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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 17:47:50 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 17:47:50 +0000
commitbbe35a6e1b54ef5cd7c1c471886c30ba85c0804e (patch)
tree985a31e8c860c690d9f20e6621ce5fcc05ccd244 /src
parentInitial commit. (diff)
downloadwget-bbe35a6e1b54ef5cd7c1c471886c30ba85c0804e.tar.xz
wget-bbe35a6e1b54ef5cd7c1c471886c30ba85c0804e.zip
Adding upstream version 1.21.upstream/1.21upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src')
-rw-r--r--src/Makefile.am110
-rw-r--r--src/Makefile.in2804
-rw-r--r--src/build_info.c101
-rw-r--r--src/build_info.c.in18
-rw-r--r--src/config.h.in2685
-rw-r--r--src/connect.c1084
-rw-r--r--src/connect.h89
-rw-r--r--src/convert.c1230
-rw-r--r--src/convert.h115
-rw-r--r--src/cookies.c1539
-rw-r--r--src/cookies.h47
-rw-r--r--src/css-tokens.h65
-rw-r--r--src/css-url.c236
-rw-r--r--src/css-url.h37
-rw-r--r--src/css.c3932
-rw-r--r--src/css.l167
-rw-r--r--src/css_.c3933
-rw-r--r--src/exits.c93
-rw-r--r--src/exits.h48
-rw-r--r--src/ftp-basic.c1342
-rw-r--r--src/ftp-ls.c1175
-rw-r--r--src/ftp-opie.c2220
-rw-r--r--src/ftp.c2898
-rw-r--r--src/ftp.h184
-rw-r--r--src/gnutls.c1116
-rw-r--r--src/hash.c813
-rw-r--r--src/hash.h66
-rw-r--r--src/host.c1082
-rw-r--r--src/host.h107
-rw-r--r--src/hsts.c829
-rw-r--r--src/hsts.h53
-rw-r--r--src/html-parse.c1221
-rw-r--r--src/html-parse.h71
-rw-r--r--src/html-url.c977
-rw-r--r--src/html-url.h58
-rw-r--r--src/http-ntlm.c618
-rw-r--r--src/http-ntlm.h53
-rw-r--r--src/http.c5495
-rw-r--r--src/http.h51
-rw-r--r--src/init.c2135
-rw-r--r--src/init.h48
-rw-r--r--src/iri.c449
-rw-r--r--src/iri.h75
-rw-r--r--src/log.c995
-rw-r--r--src/log.h60
-rw-r--r--src/main.c2306
-rw-r--r--src/metalink.c1599
-rw-r--r--src/metalink.h75
-rw-r--r--src/mswindows.c652
-rw-r--r--src/mswindows.h78
-rw-r--r--src/netrc.c569
-rw-r--r--src/netrc.h39
-rw-r--r--src/openssl.c1260
-rw-r--r--src/options.h351
-rw-r--r--src/progress.c1462
-rw-r--r--src/progress.h45
-rw-r--r--src/ptimer.c413
-rw-r--r--src/ptimer.h46
-rw-r--r--src/recur.c919
-rw-r--r--src/recur.h49
-rw-r--r--src/res.c650
-rw-r--r--src/res.h50
-rw-r--r--src/retr.c1561
-rw-r--r--src/retr.h81
-rw-r--r--src/spider.c101
-rw-r--r--src/spider.h39
-rw-r--r--src/ssl.h40
-rw-r--r--src/sysdep.h59
-rw-r--r--src/url.c2540
-rw-r--r--src/url.h136
-rw-r--r--src/utils.c2993
-rw-r--r--src/utils.h179
-rw-r--r--src/version.h41
-rw-r--r--src/warc.c1662
-rw-r--r--src/warc.h27
-rw-r--r--src/wget.h333
-rw-r--r--src/xattr.c95
-rw-r--r--src/xattr.h46
78 files changed, 63020 insertions, 0 deletions
diff --git a/src/Makefile.am b/src/Makefile.am
new file mode 100644
index 0000000..322a3db
--- /dev/null
+++ b/src/Makefile.am
@@ -0,0 +1,110 @@
+# Makefile for `wget' utility
+# Copyright (C) 1995-2011, 2015, 2018-2020 Free Software Foundation,
+# Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+# Additional permission under GNU GPL version 3 section 7
+
+# If you modify this program, or any covered work, by linking or
+# combining it with the OpenSSL project's OpenSSL library (or a
+# modified version of that library), containing parts covered by the
+# terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+# grants you additional permission to convey the resulting work.
+# Corresponding Source for a non-source form of such a combination
+# shall include the source code for the parts of OpenSSL used as well
+# as that of the covered work.
+
+#
+# Version: @VERSION@
+#
+
+if IRI_IS_ENABLED
+IRI_OBJ = iri.c
+endif
+
+if METALINK_IS_ENABLED
+METALINK_OBJ = metalink.c
+endif
+
+if WITH_XATTR
+XATTR_OBJ = xattr.c
+endif
+
+# The following line is losing on some versions of make!
+DEFS = @DEFS@ -DSYSTEM_WGETRC=\"$(sysconfdir)/wgetrc\" -DLOCALEDIR=\"$(localedir)\"
+
+EXTRA_DIST = css.l css.c css_.c build_info.c.in build_info.c
+
+bin_PROGRAMS = wget
+wget_SOURCES = connect.c convert.c cookies.c ftp.c \
+ css_.c css-url.c \
+ ftp-basic.c ftp-ls.c hash.c host.c hsts.c html-parse.c html-url.c \
+ http.c init.c log.c main.c netrc.c progress.c ptimer.c \
+ recur.c res.c retr.c spider.c url.c warc.c $(XATTR_OBJ) \
+ utils.c exits.c build_info.c $(IRI_OBJ) $(METALINK_OBJ) \
+ css-url.h css-tokens.h connect.h convert.h cookies.h \
+ ftp.h hash.h host.h hsts.h html-parse.h html-url.h \
+ http.h http-ntlm.h init.h log.h mswindows.h netrc.h \
+ options.h progress.h ptimer.h recur.h res.h retr.h \
+ spider.h ssl.h sysdep.h url.h warc.h utils.h wget.h iri.h \
+ exits.h version.h metalink.h xattr.h
+nodist_wget_SOURCES = version.c
+EXTRA_wget_SOURCES = iri.c
+LDADD = $(CODE_COVERAGE_LIBS) $(LIBOBJS) ../lib/libgnu.a $(GETADDRINFO_LIB) $(HOSTENT_LIB)\
+ $(INET_NTOP_LIB) $(LIBSOCKET) $(LIB_CLOCK_GETTIME) $(LIB_CRYPTO)\
+ $(LIB_NANOSLEEP) $(LIB_POSIX_SPAWN) $(LIB_SELECT) $(LIBICONV) $(LIBINTL)\
+ $(LIBTHREAD) $(LIBUNISTRING) $(SERVENT_LIB)
+AM_CPPFLAGS = -I$(top_builddir)/lib -I$(top_srcdir)/lib $(CODE_COVERAGE_CPPFLAGS)
+AM_CFLAGS = $(WERROR_CFLAGS) $(WARN_CFLAGS) $(CODE_COVERAGE_CFLAGS)
+
+../lib/libgnu.a:
+ cd ../lib && $(MAKE) $(AM_MAKEFLAGS)
+
+build_info.c: $(srcdir)/Makefile.am $(srcdir)/build_info.c.in
+ if test -n "$(VPATH)"; then cp "$(srcdir)/build_info.c.in" .; fi
+ $(PERL) "$(top_srcdir)/build-aux/build_info.pl" \
+ "$(top_builddir)/src/build_info.c"
+ if test -n "$(VPATH)"; then rm -f build_info.c.in; fi
+
+ESCAPEQUOTE = sed -e 's/[\\"]/\\&/g' -e 's/\\"/"/' -e 's/\\";$$/";/'
+version.c: $(wget_SOURCES) ../lib/libgnu.a
+ echo '/* version.c */' > $@
+ echo '/* Autogenerated by Makefile - DO NOT EDIT */' >> $@
+ echo '' >> $@
+ echo '#include "version.h"' >> $@
+ echo 'const char *version_string = "@VERSION@";' >> $@
+ echo 'const char *compilation_string = "'$(COMPILE)'";' \
+ | $(ESCAPEQUOTE) >> $@
+ echo 'const char *link_string = "'$(CCLD) $(AM_CFLAGS) $(CFLAGS) \
+ $(AM_LDFLAGS) $(LDFLAGS) $(LIBS) $(wget_LDADD)'";' \
+ | $(ESCAPEQUOTE) >> $@
+
+css.c: $(srcdir)/css.l
+ $(LEX) $(LFLAGS) -o$@ $^
+
+css_.c: css.c
+ echo '#include "wget.h"' > $@
+ cat css.c >> $@
+
+distclean-local:
+ rm -f css.c css_.c
+
+check_LIBRARIES = libunittest.a
+libunittest_a_SOURCES = $(wget_SOURCES) build_info.c
+nodist_libunittest_a_SOURCES = version.c
+libunittest_a_CPPFLAGS = -DTESTING "-I$(top_builddir)/lib" "-I$(top_srcdir)/lib" $(CODE_COVERAGE_CPPLAGS)
+libunittest_a_LIBADD = $(LIBOBJS)
+
+CLEANFILES = *~ *.bak core core.[0-9]* build_info.c version.c
diff --git a/src/Makefile.in b/src/Makefile.in
new file mode 100644
index 0000000..3e7c745
--- /dev/null
+++ b/src/Makefile.in
@@ -0,0 +1,2804 @@
+# Makefile.in generated by automake 1.16.2 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# Makefile for `wget' utility
+# Copyright (C) 1995-2011, 2015, 2018-2020 Free Software Foundation,
+# Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+# Additional permission under GNU GPL version 3 section 7
+
+# If you modify this program, or any covered work, by linking or
+# combining it with the OpenSSL project's OpenSSL library (or a
+# modified version of that library), containing parts covered by the
+# terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+# grants you additional permission to convey the resulting work.
+# Corresponding Source for a non-source form of such a combination
+# shall include the source code for the parts of OpenSSL used as well
+# as that of the covered work.
+
+#
+# Version: @VERSION@
+#
+
+VPATH = @srcdir@
+am__is_gnu_make = { \
+ if test -z '$(MAKELEVEL)'; then \
+ false; \
+ elif test -n '$(MAKE_HOST)'; then \
+ true; \
+ elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
+ true; \
+ else \
+ false; \
+ fi; \
+}
+am__make_running_with_option = \
+ case $${target_option-} in \
+ ?) ;; \
+ *) echo "am__make_running_with_option: internal error: invalid" \
+ "target option '$${target_option-}' specified" >&2; \
+ exit 1;; \
+ esac; \
+ has_opt=no; \
+ sane_makeflags=$$MAKEFLAGS; \
+ if $(am__is_gnu_make); then \
+ sane_makeflags=$$MFLAGS; \
+ else \
+ case $$MAKEFLAGS in \
+ *\\[\ \ ]*) \
+ bs=\\; \
+ sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+ | sed "s/$$bs$$bs[$$bs $$bs ]*//g"`;; \
+ esac; \
+ fi; \
+ skip_next=no; \
+ strip_trailopt () \
+ { \
+ flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
+ }; \
+ for flg in $$sane_makeflags; do \
+ test $$skip_next = yes && { skip_next=no; continue; }; \
+ case $$flg in \
+ *=*|--*) continue;; \
+ -*I) strip_trailopt 'I'; skip_next=yes;; \
+ -*I?*) strip_trailopt 'I';; \
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+ -*l) strip_trailopt 'l'; skip_next=yes;; \
+ -*l?*) strip_trailopt 'l';; \
+ -[dEDm]) skip_next=yes;; \
+ -[JT]) skip_next=yes;; \
+ esac; \
+ case $$flg in \
+ *$$target_option*) has_opt=yes; break;; \
+ esac; \
+ done; \
+ test $$has_opt = yes
+am__make_dryrun = (target_option=n; $(am__make_running_with_option))
+am__make_keepgoing = (target_option=k; $(am__make_running_with_option))
+pkgdatadir = $(datadir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkglibexecdir = $(libexecdir)/@PACKAGE@
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
+install_sh_SCRIPT = $(install_sh) -c
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
+bin_PROGRAMS = wget$(EXEEXT)
+subdir = src
+ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
+am__aclocal_m4_deps = $(top_srcdir)/m4/00gnulib.m4 \
+ $(top_srcdir)/m4/__inline.m4 \
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+ $(top_srcdir)/m4/af_alg.m4 $(top_srcdir)/m4/alloca.m4 \
+ $(top_srcdir)/m4/arpa_inet_h.m4 \
+ $(top_srcdir)/m4/asm-underscore.m4 $(top_srcdir)/m4/base32.m4 \
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+GNULIB_FPRINTF_POSIX = @GNULIB_FPRINTF_POSIX@
+GNULIB_FPURGE = @GNULIB_FPURGE@
+GNULIB_FPUTC = @GNULIB_FPUTC@
+GNULIB_FPUTS = @GNULIB_FPUTS@
+GNULIB_FREAD = @GNULIB_FREAD@
+GNULIB_FREE_POSIX = @GNULIB_FREE_POSIX@
+GNULIB_FREOPEN = @GNULIB_FREOPEN@
+GNULIB_FSCANF = @GNULIB_FSCANF@
+GNULIB_FSEEK = @GNULIB_FSEEK@
+GNULIB_FSEEKO = @GNULIB_FSEEKO@
+GNULIB_FSTAT = @GNULIB_FSTAT@
+GNULIB_FSTATAT = @GNULIB_FSTATAT@
+GNULIB_FSYNC = @GNULIB_FSYNC@
+GNULIB_FTELL = @GNULIB_FTELL@
+GNULIB_FTELLO = @GNULIB_FTELLO@
+GNULIB_FTRUNCATE = @GNULIB_FTRUNCATE@
+GNULIB_FUTIMENS = @GNULIB_FUTIMENS@
+GNULIB_FWRITE = @GNULIB_FWRITE@
+GNULIB_GETADDRINFO = @GNULIB_GETADDRINFO@
+GNULIB_GETC = @GNULIB_GETC@
+GNULIB_GETCHAR = @GNULIB_GETCHAR@
+GNULIB_GETCWD = @GNULIB_GETCWD@
+GNULIB_GETDELIM = @GNULIB_GETDELIM@
+GNULIB_GETDOMAINNAME = @GNULIB_GETDOMAINNAME@
+GNULIB_GETDTABLESIZE = @GNULIB_GETDTABLESIZE@
+GNULIB_GETENTROPY = @GNULIB_GETENTROPY@
+GNULIB_GETGROUPS = @GNULIB_GETGROUPS@
+GNULIB_GETHOSTNAME = @GNULIB_GETHOSTNAME@
+GNULIB_GETLINE = @GNULIB_GETLINE@
+GNULIB_GETLOADAVG = @GNULIB_GETLOADAVG@
+GNULIB_GETLOGIN = @GNULIB_GETLOGIN@
+GNULIB_GETLOGIN_R = @GNULIB_GETLOGIN_R@
+GNULIB_GETOPT_POSIX = @GNULIB_GETOPT_POSIX@
+GNULIB_GETPAGESIZE = @GNULIB_GETPAGESIZE@
+GNULIB_GETPASS = @GNULIB_GETPASS@
+GNULIB_GETPEERNAME = @GNULIB_GETPEERNAME@
+GNULIB_GETRANDOM = @GNULIB_GETRANDOM@
+GNULIB_GETSOCKNAME = @GNULIB_GETSOCKNAME@
+GNULIB_GETSOCKOPT = @GNULIB_GETSOCKOPT@
+GNULIB_GETSUBOPT = @GNULIB_GETSUBOPT@
+GNULIB_GETTIMEOFDAY = @GNULIB_GETTIMEOFDAY@
+GNULIB_GETUMASK = @GNULIB_GETUMASK@
+GNULIB_GETUSERSHELL = @GNULIB_GETUSERSHELL@
+GNULIB_GL_UNISTD_H_GETOPT = @GNULIB_GL_UNISTD_H_GETOPT@
+GNULIB_GRANTPT = @GNULIB_GRANTPT@
+GNULIB_GROUP_MEMBER = @GNULIB_GROUP_MEMBER@
+GNULIB_ICONV = @GNULIB_ICONV@
+GNULIB_IMAXABS = @GNULIB_IMAXABS@
+GNULIB_IMAXDIV = @GNULIB_IMAXDIV@
+GNULIB_INET_NTOP = @GNULIB_INET_NTOP@
+GNULIB_INET_PTON = @GNULIB_INET_PTON@
+GNULIB_IOCTL = @GNULIB_IOCTL@
+GNULIB_ISATTY = @GNULIB_ISATTY@
+GNULIB_ISBLANK = @GNULIB_ISBLANK@
+GNULIB_ISWBLANK = @GNULIB_ISWBLANK@
+GNULIB_ISWCTYPE = @GNULIB_ISWCTYPE@
+GNULIB_ISWDIGIT = @GNULIB_ISWDIGIT@
+GNULIB_ISWXDIGIT = @GNULIB_ISWXDIGIT@
+GNULIB_LCHMOD = @GNULIB_LCHMOD@
+GNULIB_LCHOWN = @GNULIB_LCHOWN@
+GNULIB_LINK = @GNULIB_LINK@
+GNULIB_LINKAT = @GNULIB_LINKAT@
+GNULIB_LISTEN = @GNULIB_LISTEN@
+GNULIB_LOCALECONV = @GNULIB_LOCALECONV@
+GNULIB_LOCALENAME = @GNULIB_LOCALENAME@
+GNULIB_LOCALTIME = @GNULIB_LOCALTIME@
+GNULIB_LSEEK = @GNULIB_LSEEK@
+GNULIB_LSTAT = @GNULIB_LSTAT@
+GNULIB_MALLOC_POSIX = @GNULIB_MALLOC_POSIX@
+GNULIB_MBRLEN = @GNULIB_MBRLEN@
+GNULIB_MBRTOWC = @GNULIB_MBRTOWC@
+GNULIB_MBSCASECMP = @GNULIB_MBSCASECMP@
+GNULIB_MBSCASESTR = @GNULIB_MBSCASESTR@
+GNULIB_MBSCHR = @GNULIB_MBSCHR@
+GNULIB_MBSCSPN = @GNULIB_MBSCSPN@
+GNULIB_MBSINIT = @GNULIB_MBSINIT@
+GNULIB_MBSLEN = @GNULIB_MBSLEN@
+GNULIB_MBSNCASECMP = @GNULIB_MBSNCASECMP@
+GNULIB_MBSNLEN = @GNULIB_MBSNLEN@
+GNULIB_MBSNRTOWCS = @GNULIB_MBSNRTOWCS@
+GNULIB_MBSPBRK = @GNULIB_MBSPBRK@
+GNULIB_MBSPCASECMP = @GNULIB_MBSPCASECMP@
+GNULIB_MBSRCHR = @GNULIB_MBSRCHR@
+GNULIB_MBSRTOWCS = @GNULIB_MBSRTOWCS@
+GNULIB_MBSSEP = @GNULIB_MBSSEP@
+GNULIB_MBSSPN = @GNULIB_MBSSPN@
+GNULIB_MBSSTR = @GNULIB_MBSSTR@
+GNULIB_MBSTOK_R = @GNULIB_MBSTOK_R@
+GNULIB_MBTOWC = @GNULIB_MBTOWC@
+GNULIB_MDA_ACCESS = @GNULIB_MDA_ACCESS@
+GNULIB_MDA_CHDIR = @GNULIB_MDA_CHDIR@
+GNULIB_MDA_CHMOD = @GNULIB_MDA_CHMOD@
+GNULIB_MDA_CLOSE = @GNULIB_MDA_CLOSE@
+GNULIB_MDA_CREAT = @GNULIB_MDA_CREAT@
+GNULIB_MDA_DUP = @GNULIB_MDA_DUP@
+GNULIB_MDA_DUP2 = @GNULIB_MDA_DUP2@
+GNULIB_MDA_ECVT = @GNULIB_MDA_ECVT@
+GNULIB_MDA_EXECL = @GNULIB_MDA_EXECL@
+GNULIB_MDA_EXECLE = @GNULIB_MDA_EXECLE@
+GNULIB_MDA_EXECLP = @GNULIB_MDA_EXECLP@
+GNULIB_MDA_EXECV = @GNULIB_MDA_EXECV@
+GNULIB_MDA_EXECVE = @GNULIB_MDA_EXECVE@
+GNULIB_MDA_EXECVP = @GNULIB_MDA_EXECVP@
+GNULIB_MDA_EXECVPE = @GNULIB_MDA_EXECVPE@
+GNULIB_MDA_FCLOSEALL = @GNULIB_MDA_FCLOSEALL@
+GNULIB_MDA_FCVT = @GNULIB_MDA_FCVT@
+GNULIB_MDA_FDOPEN = @GNULIB_MDA_FDOPEN@
+GNULIB_MDA_FILENO = @GNULIB_MDA_FILENO@
+GNULIB_MDA_GCVT = @GNULIB_MDA_GCVT@
+GNULIB_MDA_GETCWD = @GNULIB_MDA_GETCWD@
+GNULIB_MDA_GETPID = @GNULIB_MDA_GETPID@
+GNULIB_MDA_GETW = @GNULIB_MDA_GETW@
+GNULIB_MDA_ISATTY = @GNULIB_MDA_ISATTY@
+GNULIB_MDA_LSEEK = @GNULIB_MDA_LSEEK@
+GNULIB_MDA_MEMCCPY = @GNULIB_MDA_MEMCCPY@
+GNULIB_MDA_MKDIR = @GNULIB_MDA_MKDIR@
+GNULIB_MDA_MKTEMP = @GNULIB_MDA_MKTEMP@
+GNULIB_MDA_OPEN = @GNULIB_MDA_OPEN@
+GNULIB_MDA_PUTENV = @GNULIB_MDA_PUTENV@
+GNULIB_MDA_PUTW = @GNULIB_MDA_PUTW@
+GNULIB_MDA_READ = @GNULIB_MDA_READ@
+GNULIB_MDA_RMDIR = @GNULIB_MDA_RMDIR@
+GNULIB_MDA_STRDUP = @GNULIB_MDA_STRDUP@
+GNULIB_MDA_SWAB = @GNULIB_MDA_SWAB@
+GNULIB_MDA_TEMPNAM = @GNULIB_MDA_TEMPNAM@
+GNULIB_MDA_TZSET = @GNULIB_MDA_TZSET@
+GNULIB_MDA_UMASK = @GNULIB_MDA_UMASK@
+GNULIB_MDA_UNLINK = @GNULIB_MDA_UNLINK@
+GNULIB_MDA_UTIME = @GNULIB_MDA_UTIME@
+GNULIB_MDA_WCSDUP = @GNULIB_MDA_WCSDUP@
+GNULIB_MDA_WRITE = @GNULIB_MDA_WRITE@
+GNULIB_MEMCHR = @GNULIB_MEMCHR@
+GNULIB_MEMMEM = @GNULIB_MEMMEM@
+GNULIB_MEMPCPY = @GNULIB_MEMPCPY@
+GNULIB_MEMRCHR = @GNULIB_MEMRCHR@
+GNULIB_MKDIR = @GNULIB_MKDIR@
+GNULIB_MKDIRAT = @GNULIB_MKDIRAT@
+GNULIB_MKDTEMP = @GNULIB_MKDTEMP@
+GNULIB_MKFIFO = @GNULIB_MKFIFO@
+GNULIB_MKFIFOAT = @GNULIB_MKFIFOAT@
+GNULIB_MKNOD = @GNULIB_MKNOD@
+GNULIB_MKNODAT = @GNULIB_MKNODAT@
+GNULIB_MKOSTEMP = @GNULIB_MKOSTEMP@
+GNULIB_MKOSTEMPS = @GNULIB_MKOSTEMPS@
+GNULIB_MKSTEMP = @GNULIB_MKSTEMP@
+GNULIB_MKSTEMPS = @GNULIB_MKSTEMPS@
+GNULIB_MKTIME = @GNULIB_MKTIME@
+GNULIB_NANOSLEEP = @GNULIB_NANOSLEEP@
+GNULIB_NL_LANGINFO = @GNULIB_NL_LANGINFO@
+GNULIB_NONBLOCKING = @GNULIB_NONBLOCKING@
+GNULIB_OBSTACK_PRINTF = @GNULIB_OBSTACK_PRINTF@
+GNULIB_OBSTACK_PRINTF_POSIX = @GNULIB_OBSTACK_PRINTF_POSIX@
+GNULIB_OPEN = @GNULIB_OPEN@
+GNULIB_OPENAT = @GNULIB_OPENAT@
+GNULIB_OPENDIR = @GNULIB_OPENDIR@
+GNULIB_OVERRIDES_STRUCT_STAT = @GNULIB_OVERRIDES_STRUCT_STAT@
+GNULIB_OVERRIDES_WINT_T = @GNULIB_OVERRIDES_WINT_T@
+GNULIB_PCLOSE = @GNULIB_PCLOSE@
+GNULIB_PERROR = @GNULIB_PERROR@
+GNULIB_PIPE = @GNULIB_PIPE@
+GNULIB_PIPE2 = @GNULIB_PIPE2@
+GNULIB_POPEN = @GNULIB_POPEN@
+GNULIB_POSIX_MEMALIGN = @GNULIB_POSIX_MEMALIGN@
+GNULIB_POSIX_OPENPT = @GNULIB_POSIX_OPENPT@
+GNULIB_POSIX_SPAWN = @GNULIB_POSIX_SPAWN@
+GNULIB_POSIX_SPAWNATTR_DESTROY = @GNULIB_POSIX_SPAWNATTR_DESTROY@
+GNULIB_POSIX_SPAWNATTR_GETFLAGS = @GNULIB_POSIX_SPAWNATTR_GETFLAGS@
+GNULIB_POSIX_SPAWNATTR_GETPGROUP = @GNULIB_POSIX_SPAWNATTR_GETPGROUP@
+GNULIB_POSIX_SPAWNATTR_GETSCHEDPARAM = @GNULIB_POSIX_SPAWNATTR_GETSCHEDPARAM@
+GNULIB_POSIX_SPAWNATTR_GETSCHEDPOLICY = @GNULIB_POSIX_SPAWNATTR_GETSCHEDPOLICY@
+GNULIB_POSIX_SPAWNATTR_GETSIGDEFAULT = @GNULIB_POSIX_SPAWNATTR_GETSIGDEFAULT@
+GNULIB_POSIX_SPAWNATTR_GETSIGMASK = @GNULIB_POSIX_SPAWNATTR_GETSIGMASK@
+GNULIB_POSIX_SPAWNATTR_INIT = @GNULIB_POSIX_SPAWNATTR_INIT@
+GNULIB_POSIX_SPAWNATTR_SETFLAGS = @GNULIB_POSIX_SPAWNATTR_SETFLAGS@
+GNULIB_POSIX_SPAWNATTR_SETPGROUP = @GNULIB_POSIX_SPAWNATTR_SETPGROUP@
+GNULIB_POSIX_SPAWNATTR_SETSCHEDPARAM = @GNULIB_POSIX_SPAWNATTR_SETSCHEDPARAM@
+GNULIB_POSIX_SPAWNATTR_SETSCHEDPOLICY = @GNULIB_POSIX_SPAWNATTR_SETSCHEDPOLICY@
+GNULIB_POSIX_SPAWNATTR_SETSIGDEFAULT = @GNULIB_POSIX_SPAWNATTR_SETSIGDEFAULT@
+GNULIB_POSIX_SPAWNATTR_SETSIGMASK = @GNULIB_POSIX_SPAWNATTR_SETSIGMASK@
+GNULIB_POSIX_SPAWNP = @GNULIB_POSIX_SPAWNP@
+GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR = @GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR@
+GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDCLOSE = @GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDCLOSE@
+GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDDUP2 = @GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDDUP2@
+GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDFCHDIR = @GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDFCHDIR@
+GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDOPEN = @GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDOPEN@
+GNULIB_POSIX_SPAWN_FILE_ACTIONS_DESTROY = @GNULIB_POSIX_SPAWN_FILE_ACTIONS_DESTROY@
+GNULIB_POSIX_SPAWN_FILE_ACTIONS_INIT = @GNULIB_POSIX_SPAWN_FILE_ACTIONS_INIT@
+GNULIB_PREAD = @GNULIB_PREAD@
+GNULIB_PRINTF = @GNULIB_PRINTF@
+GNULIB_PRINTF_POSIX = @GNULIB_PRINTF_POSIX@
+GNULIB_PSELECT = @GNULIB_PSELECT@
+GNULIB_PTHREAD_SIGMASK = @GNULIB_PTHREAD_SIGMASK@
+GNULIB_PTSNAME = @GNULIB_PTSNAME@
+GNULIB_PTSNAME_R = @GNULIB_PTSNAME_R@
+GNULIB_PUTC = @GNULIB_PUTC@
+GNULIB_PUTCHAR = @GNULIB_PUTCHAR@
+GNULIB_PUTENV = @GNULIB_PUTENV@
+GNULIB_PUTS = @GNULIB_PUTS@
+GNULIB_PWRITE = @GNULIB_PWRITE@
+GNULIB_QSORT_R = @GNULIB_QSORT_R@
+GNULIB_RAISE = @GNULIB_RAISE@
+GNULIB_RANDOM = @GNULIB_RANDOM@
+GNULIB_RANDOM_R = @GNULIB_RANDOM_R@
+GNULIB_RAWMEMCHR = @GNULIB_RAWMEMCHR@
+GNULIB_READ = @GNULIB_READ@
+GNULIB_READDIR = @GNULIB_READDIR@
+GNULIB_READLINK = @GNULIB_READLINK@
+GNULIB_READLINKAT = @GNULIB_READLINKAT@
+GNULIB_REALLOCARRAY = @GNULIB_REALLOCARRAY@
+GNULIB_REALLOC_POSIX = @GNULIB_REALLOC_POSIX@
+GNULIB_REALPATH = @GNULIB_REALPATH@
+GNULIB_RECV = @GNULIB_RECV@
+GNULIB_RECVFROM = @GNULIB_RECVFROM@
+GNULIB_REMOVE = @GNULIB_REMOVE@
+GNULIB_RENAME = @GNULIB_RENAME@
+GNULIB_RENAMEAT = @GNULIB_RENAMEAT@
+GNULIB_REWINDDIR = @GNULIB_REWINDDIR@
+GNULIB_RMDIR = @GNULIB_RMDIR@
+GNULIB_RPMATCH = @GNULIB_RPMATCH@
+GNULIB_SCANDIR = @GNULIB_SCANDIR@
+GNULIB_SCANF = @GNULIB_SCANF@
+GNULIB_SCHED_YIELD = @GNULIB_SCHED_YIELD@
+GNULIB_SECURE_GETENV = @GNULIB_SECURE_GETENV@
+GNULIB_SELECT = @GNULIB_SELECT@
+GNULIB_SEND = @GNULIB_SEND@
+GNULIB_SENDTO = @GNULIB_SENDTO@
+GNULIB_SETENV = @GNULIB_SETENV@
+GNULIB_SETHOSTNAME = @GNULIB_SETHOSTNAME@
+GNULIB_SETLOCALE = @GNULIB_SETLOCALE@
+GNULIB_SETLOCALE_NULL = @GNULIB_SETLOCALE_NULL@
+GNULIB_SETSOCKOPT = @GNULIB_SETSOCKOPT@
+GNULIB_SHUTDOWN = @GNULIB_SHUTDOWN@
+GNULIB_SIGABBREV_NP = @GNULIB_SIGABBREV_NP@
+GNULIB_SIGACTION = @GNULIB_SIGACTION@
+GNULIB_SIGDESCR_NP = @GNULIB_SIGDESCR_NP@
+GNULIB_SIGNAL_H_SIGPIPE = @GNULIB_SIGNAL_H_SIGPIPE@
+GNULIB_SIGPROCMASK = @GNULIB_SIGPROCMASK@
+GNULIB_SLEEP = @GNULIB_SLEEP@
+GNULIB_SNPRINTF = @GNULIB_SNPRINTF@
+GNULIB_SOCKET = @GNULIB_SOCKET@
+GNULIB_SPRINTF_POSIX = @GNULIB_SPRINTF_POSIX@
+GNULIB_STAT = @GNULIB_STAT@
+GNULIB_STDIO_H_NONBLOCKING = @GNULIB_STDIO_H_NONBLOCKING@
+GNULIB_STDIO_H_SIGPIPE = @GNULIB_STDIO_H_SIGPIPE@
+GNULIB_STPCPY = @GNULIB_STPCPY@
+GNULIB_STPNCPY = @GNULIB_STPNCPY@
+GNULIB_STRCASESTR = @GNULIB_STRCASESTR@
+GNULIB_STRCHRNUL = @GNULIB_STRCHRNUL@
+GNULIB_STRDUP = @GNULIB_STRDUP@
+GNULIB_STRERROR = @GNULIB_STRERROR@
+GNULIB_STRERRORNAME_NP = @GNULIB_STRERRORNAME_NP@
+GNULIB_STRERROR_R = @GNULIB_STRERROR_R@
+GNULIB_STRFTIME = @GNULIB_STRFTIME@
+GNULIB_STRNCAT = @GNULIB_STRNCAT@
+GNULIB_STRNDUP = @GNULIB_STRNDUP@
+GNULIB_STRNLEN = @GNULIB_STRNLEN@
+GNULIB_STRPBRK = @GNULIB_STRPBRK@
+GNULIB_STRPTIME = @GNULIB_STRPTIME@
+GNULIB_STRSEP = @GNULIB_STRSEP@
+GNULIB_STRSIGNAL = @GNULIB_STRSIGNAL@
+GNULIB_STRSTR = @GNULIB_STRSTR@
+GNULIB_STRTOD = @GNULIB_STRTOD@
+GNULIB_STRTOIMAX = @GNULIB_STRTOIMAX@
+GNULIB_STRTOK_R = @GNULIB_STRTOK_R@
+GNULIB_STRTOLD = @GNULIB_STRTOLD@
+GNULIB_STRTOLL = @GNULIB_STRTOLL@
+GNULIB_STRTOULL = @GNULIB_STRTOULL@
+GNULIB_STRTOUMAX = @GNULIB_STRTOUMAX@
+GNULIB_STRVERSCMP = @GNULIB_STRVERSCMP@
+GNULIB_SYMLINK = @GNULIB_SYMLINK@
+GNULIB_SYMLINKAT = @GNULIB_SYMLINKAT@
+GNULIB_SYSTEM_POSIX = @GNULIB_SYSTEM_POSIX@
+GNULIB_TIMEGM = @GNULIB_TIMEGM@
+GNULIB_TIME_R = @GNULIB_TIME_R@
+GNULIB_TIME_RZ = @GNULIB_TIME_RZ@
+GNULIB_TMPFILE = @GNULIB_TMPFILE@
+GNULIB_TOWCTRANS = @GNULIB_TOWCTRANS@
+GNULIB_TRUNCATE = @GNULIB_TRUNCATE@
+GNULIB_TTYNAME_R = @GNULIB_TTYNAME_R@
+GNULIB_TZSET = @GNULIB_TZSET@
+GNULIB_UNISTD_H_NONBLOCKING = @GNULIB_UNISTD_H_NONBLOCKING@
+GNULIB_UNISTD_H_SIGPIPE = @GNULIB_UNISTD_H_SIGPIPE@
+GNULIB_UNLINK = @GNULIB_UNLINK@
+GNULIB_UNLINKAT = @GNULIB_UNLINKAT@
+GNULIB_UNLOCKPT = @GNULIB_UNLOCKPT@
+GNULIB_UNSETENV = @GNULIB_UNSETENV@
+GNULIB_USLEEP = @GNULIB_USLEEP@
+GNULIB_UTIME = @GNULIB_UTIME@
+GNULIB_UTIMENSAT = @GNULIB_UTIMENSAT@
+GNULIB_VASPRINTF = @GNULIB_VASPRINTF@
+GNULIB_VDPRINTF = @GNULIB_VDPRINTF@
+GNULIB_VFPRINTF = @GNULIB_VFPRINTF@
+GNULIB_VFPRINTF_POSIX = @GNULIB_VFPRINTF_POSIX@
+GNULIB_VFSCANF = @GNULIB_VFSCANF@
+GNULIB_VPRINTF = @GNULIB_VPRINTF@
+GNULIB_VPRINTF_POSIX = @GNULIB_VPRINTF_POSIX@
+GNULIB_VSCANF = @GNULIB_VSCANF@
+GNULIB_VSNPRINTF = @GNULIB_VSNPRINTF@
+GNULIB_VSPRINTF_POSIX = @GNULIB_VSPRINTF_POSIX@
+GNULIB_WAITPID = @GNULIB_WAITPID@
+GNULIB_WARN_CFLAGS = @GNULIB_WARN_CFLAGS@
+GNULIB_WCPCPY = @GNULIB_WCPCPY@
+GNULIB_WCPNCPY = @GNULIB_WCPNCPY@
+GNULIB_WCRTOMB = @GNULIB_WCRTOMB@
+GNULIB_WCSCASECMP = @GNULIB_WCSCASECMP@
+GNULIB_WCSCAT = @GNULIB_WCSCAT@
+GNULIB_WCSCHR = @GNULIB_WCSCHR@
+GNULIB_WCSCMP = @GNULIB_WCSCMP@
+GNULIB_WCSCOLL = @GNULIB_WCSCOLL@
+GNULIB_WCSCPY = @GNULIB_WCSCPY@
+GNULIB_WCSCSPN = @GNULIB_WCSCSPN@
+GNULIB_WCSDUP = @GNULIB_WCSDUP@
+GNULIB_WCSFTIME = @GNULIB_WCSFTIME@
+GNULIB_WCSLEN = @GNULIB_WCSLEN@
+GNULIB_WCSNCASECMP = @GNULIB_WCSNCASECMP@
+GNULIB_WCSNCAT = @GNULIB_WCSNCAT@
+GNULIB_WCSNCMP = @GNULIB_WCSNCMP@
+GNULIB_WCSNCPY = @GNULIB_WCSNCPY@
+GNULIB_WCSNLEN = @GNULIB_WCSNLEN@
+GNULIB_WCSNRTOMBS = @GNULIB_WCSNRTOMBS@
+GNULIB_WCSPBRK = @GNULIB_WCSPBRK@
+GNULIB_WCSRCHR = @GNULIB_WCSRCHR@
+GNULIB_WCSRTOMBS = @GNULIB_WCSRTOMBS@
+GNULIB_WCSSPN = @GNULIB_WCSSPN@
+GNULIB_WCSSTR = @GNULIB_WCSSTR@
+GNULIB_WCSTOK = @GNULIB_WCSTOK@
+GNULIB_WCSWIDTH = @GNULIB_WCSWIDTH@
+GNULIB_WCSXFRM = @GNULIB_WCSXFRM@
+GNULIB_WCTOB = @GNULIB_WCTOB@
+GNULIB_WCTOMB = @GNULIB_WCTOMB@
+GNULIB_WCTRANS = @GNULIB_WCTRANS@
+GNULIB_WCTYPE = @GNULIB_WCTYPE@
+GNULIB_WCWIDTH = @GNULIB_WCWIDTH@
+GNULIB_WMEMCHR = @GNULIB_WMEMCHR@
+GNULIB_WMEMCMP = @GNULIB_WMEMCMP@
+GNULIB_WMEMCPY = @GNULIB_WMEMCPY@
+GNULIB_WMEMMOVE = @GNULIB_WMEMMOVE@
+GNULIB_WMEMPCPY = @GNULIB_WMEMPCPY@
+GNULIB_WMEMSET = @GNULIB_WMEMSET@
+GNULIB_WRITE = @GNULIB_WRITE@
+GNULIB__EXIT = @GNULIB__EXIT@
+GNUTLS_CFLAGS = @GNUTLS_CFLAGS@
+GNUTLS_LIBS = @GNUTLS_LIBS@
+GPGME_CFLAGS = @GPGME_CFLAGS@
+GPGME_CONFIG = @GPGME_CONFIG@
+GPGME_LIBS = @GPGME_LIBS@
+GREP = @GREP@
+HAVE_ACCEPT4 = @HAVE_ACCEPT4@
+HAVE_ALIGNED_ALLOC = @HAVE_ALIGNED_ALLOC@
+HAVE_ALLOCA_H = @HAVE_ALLOCA_H@
+HAVE_ALPHASORT = @HAVE_ALPHASORT@
+HAVE_ARPA_INET_H = @HAVE_ARPA_INET_H@
+HAVE_ATOLL = @HAVE_ATOLL@
+HAVE_BTOWC = @HAVE_BTOWC@
+HAVE_C99_STDINT_H = @HAVE_C99_STDINT_H@
+HAVE_CANONICALIZE_FILE_NAME = @HAVE_CANONICALIZE_FILE_NAME@
+HAVE_CHOWN = @HAVE_CHOWN@
+HAVE_CLOSEDIR = @HAVE_CLOSEDIR@
+HAVE_COPY_FILE_RANGE = @HAVE_COPY_FILE_RANGE@
+HAVE_CRTDEFS_H = @HAVE_CRTDEFS_H@
+HAVE_DECL_DIRFD = @HAVE_DECL_DIRFD@
+HAVE_DECL_ECVT = @HAVE_DECL_ECVT@
+HAVE_DECL_ENVIRON = @HAVE_DECL_ENVIRON@
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+HAVE_DECL_FCLOSEALL = @HAVE_DECL_FCLOSEALL@
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+HAVE_DECL_TTYNAME_R = @HAVE_DECL_TTYNAME_R@
+HAVE_DECL_UNSETENV = @HAVE_DECL_UNSETENV@
+HAVE_DECL_VSNPRINTF = @HAVE_DECL_VSNPRINTF@
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+HAVE_DPRINTF = @HAVE_DPRINTF@
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+HAVE_EUIDACCESS = @HAVE_EUIDACCESS@
+HAVE_EXECVPE = @HAVE_EXECVPE@
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+HAVE_FACCESSAT = @HAVE_FACCESSAT@
+HAVE_FCHDIR = @HAVE_FCHDIR@
+HAVE_FCHMODAT = @HAVE_FCHMODAT@
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+HAVE_FFSL = @HAVE_FFSL@
+HAVE_FFSLL = @HAVE_FFSLL@
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+HAVE_FSTATAT = @HAVE_FSTATAT@
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+HAVE_FTRUNCATE = @HAVE_FTRUNCATE@
+HAVE_FUTIMENS = @HAVE_FUTIMENS@
+HAVE_GETDTABLESIZE = @HAVE_GETDTABLESIZE@
+HAVE_GETENTROPY = @HAVE_GETENTROPY@
+HAVE_GETGROUPS = @HAVE_GETGROUPS@
+HAVE_GETHOSTNAME = @HAVE_GETHOSTNAME@
+HAVE_GETLOGIN = @HAVE_GETLOGIN@
+HAVE_GETOPT_H = @HAVE_GETOPT_H@
+HAVE_GETPAGESIZE = @HAVE_GETPAGESIZE@
+HAVE_GETPASS = @HAVE_GETPASS@
+HAVE_GETRANDOM = @HAVE_GETRANDOM@
+HAVE_GETSUBOPT = @HAVE_GETSUBOPT@
+HAVE_GETTIMEOFDAY = @HAVE_GETTIMEOFDAY@
+HAVE_GETUMASK = @HAVE_GETUMASK@
+HAVE_GRANTPT = @HAVE_GRANTPT@
+HAVE_GROUP_MEMBER = @HAVE_GROUP_MEMBER@
+HAVE_IMAXDIV_T = @HAVE_IMAXDIV_T@
+HAVE_INITSTATE = @HAVE_INITSTATE@
+HAVE_INTTYPES_H = @HAVE_INTTYPES_H@
+HAVE_ISBLANK = @HAVE_ISBLANK@
+HAVE_ISWBLANK = @HAVE_ISWBLANK@
+HAVE_ISWCNTRL = @HAVE_ISWCNTRL@
+HAVE_LANGINFO_ALTMON = @HAVE_LANGINFO_ALTMON@
+HAVE_LANGINFO_CODESET = @HAVE_LANGINFO_CODESET@
+HAVE_LANGINFO_ERA = @HAVE_LANGINFO_ERA@
+HAVE_LANGINFO_H = @HAVE_LANGINFO_H@
+HAVE_LANGINFO_T_FMT_AMPM = @HAVE_LANGINFO_T_FMT_AMPM@
+HAVE_LANGINFO_YESEXPR = @HAVE_LANGINFO_YESEXPR@
+HAVE_LCHMOD = @HAVE_LCHMOD@
+HAVE_LCHOWN = @HAVE_LCHOWN@
+HAVE_LIBGNUTLS = @HAVE_LIBGNUTLS@
+HAVE_LIBSSL = @HAVE_LIBSSL@
+HAVE_LIBUNISTRING = @HAVE_LIBUNISTRING@
+HAVE_LINK = @HAVE_LINK@
+HAVE_LINKAT = @HAVE_LINKAT@
+HAVE_LSTAT = @HAVE_LSTAT@
+HAVE_MAX_ALIGN_T = @HAVE_MAX_ALIGN_T@
+HAVE_MBRLEN = @HAVE_MBRLEN@
+HAVE_MBRTOWC = @HAVE_MBRTOWC@
+HAVE_MBSINIT = @HAVE_MBSINIT@
+HAVE_MBSLEN = @HAVE_MBSLEN@
+HAVE_MBSNRTOWCS = @HAVE_MBSNRTOWCS@
+HAVE_MBSRTOWCS = @HAVE_MBSRTOWCS@
+HAVE_MBTOWC = @HAVE_MBTOWC@
+HAVE_MEMPCPY = @HAVE_MEMPCPY@
+HAVE_MKDIRAT = @HAVE_MKDIRAT@
+HAVE_MKDTEMP = @HAVE_MKDTEMP@
+HAVE_MKFIFO = @HAVE_MKFIFO@
+HAVE_MKFIFOAT = @HAVE_MKFIFOAT@
+HAVE_MKNOD = @HAVE_MKNOD@
+HAVE_MKNODAT = @HAVE_MKNODAT@
+HAVE_MKOSTEMP = @HAVE_MKOSTEMP@
+HAVE_MKOSTEMPS = @HAVE_MKOSTEMPS@
+HAVE_MKSTEMP = @HAVE_MKSTEMP@
+HAVE_MKSTEMPS = @HAVE_MKSTEMPS@
+HAVE_MSVC_INVALID_PARAMETER_HANDLER = @HAVE_MSVC_INVALID_PARAMETER_HANDLER@
+HAVE_NANOSLEEP = @HAVE_NANOSLEEP@
+HAVE_NETDB_H = @HAVE_NETDB_H@
+HAVE_NETINET_IN_H = @HAVE_NETINET_IN_H@
+HAVE_NEWLOCALE = @HAVE_NEWLOCALE@
+HAVE_NL_LANGINFO = @HAVE_NL_LANGINFO@
+HAVE_OPENAT = @HAVE_OPENAT@
+HAVE_OPENDIR = @HAVE_OPENDIR@
+HAVE_OS_H = @HAVE_OS_H@
+HAVE_PCLOSE = @HAVE_PCLOSE@
+HAVE_PIPE = @HAVE_PIPE@
+HAVE_PIPE2 = @HAVE_PIPE2@
+HAVE_POPEN = @HAVE_POPEN@
+HAVE_POSIX_MEMALIGN = @HAVE_POSIX_MEMALIGN@
+HAVE_POSIX_OPENPT = @HAVE_POSIX_OPENPT@
+HAVE_POSIX_SIGNALBLOCKING = @HAVE_POSIX_SIGNALBLOCKING@
+HAVE_POSIX_SPAWN = @HAVE_POSIX_SPAWN@
+HAVE_POSIX_SPAWNATTR_T = @HAVE_POSIX_SPAWNATTR_T@
+HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR = @HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR@
+HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDFCHDIR = @HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDFCHDIR@
+HAVE_POSIX_SPAWN_FILE_ACTIONS_T = @HAVE_POSIX_SPAWN_FILE_ACTIONS_T@
+HAVE_PREAD = @HAVE_PREAD@
+HAVE_PSELECT = @HAVE_PSELECT@
+HAVE_PTHREAD_SIGMASK = @HAVE_PTHREAD_SIGMASK@
+HAVE_PTSNAME = @HAVE_PTSNAME@
+HAVE_PTSNAME_R = @HAVE_PTSNAME_R@
+HAVE_PWRITE = @HAVE_PWRITE@
+HAVE_QSORT_R = @HAVE_QSORT_R@
+HAVE_RAISE = @HAVE_RAISE@
+HAVE_RANDOM = @HAVE_RANDOM@
+HAVE_RANDOM_H = @HAVE_RANDOM_H@
+HAVE_RANDOM_R = @HAVE_RANDOM_R@
+HAVE_RAWMEMCHR = @HAVE_RAWMEMCHR@
+HAVE_READDIR = @HAVE_READDIR@
+HAVE_READLINK = @HAVE_READLINK@
+HAVE_READLINKAT = @HAVE_READLINKAT@
+HAVE_REALLOCARRAY = @HAVE_REALLOCARRAY@
+HAVE_REALPATH = @HAVE_REALPATH@
+HAVE_RENAMEAT = @HAVE_RENAMEAT@
+HAVE_REWINDDIR = @HAVE_REWINDDIR@
+HAVE_RPMATCH = @HAVE_RPMATCH@
+HAVE_SA_FAMILY_T = @HAVE_SA_FAMILY_T@
+HAVE_SCANDIR = @HAVE_SCANDIR@
+HAVE_SCHED_H = @HAVE_SCHED_H@
+HAVE_SCHED_YIELD = @HAVE_SCHED_YIELD@
+HAVE_SECURE_GETENV = @HAVE_SECURE_GETENV@
+HAVE_SETENV = @HAVE_SETENV@
+HAVE_SETHOSTNAME = @HAVE_SETHOSTNAME@
+HAVE_SETSTATE = @HAVE_SETSTATE@
+HAVE_SIGABBREV_NP = @HAVE_SIGABBREV_NP@
+HAVE_SIGACTION = @HAVE_SIGACTION@
+HAVE_SIGDESCR_NP = @HAVE_SIGDESCR_NP@
+HAVE_SIGHANDLER_T = @HAVE_SIGHANDLER_T@
+HAVE_SIGINFO_T = @HAVE_SIGINFO_T@
+HAVE_SIGNED_SIG_ATOMIC_T = @HAVE_SIGNED_SIG_ATOMIC_T@
+HAVE_SIGNED_WCHAR_T = @HAVE_SIGNED_WCHAR_T@
+HAVE_SIGNED_WINT_T = @HAVE_SIGNED_WINT_T@
+HAVE_SIGSET_T = @HAVE_SIGSET_T@
+HAVE_SLEEP = @HAVE_SLEEP@
+HAVE_SPAWN_H = @HAVE_SPAWN_H@
+HAVE_STDINT_H = @HAVE_STDINT_H@
+HAVE_STPCPY = @HAVE_STPCPY@
+HAVE_STPNCPY = @HAVE_STPNCPY@
+HAVE_STRCASECMP = @HAVE_STRCASECMP@
+HAVE_STRCASESTR = @HAVE_STRCASESTR@
+HAVE_STRCHRNUL = @HAVE_STRCHRNUL@
+HAVE_STRERRORNAME_NP = @HAVE_STRERRORNAME_NP@
+HAVE_STRINGS_H = @HAVE_STRINGS_H@
+HAVE_STRPBRK = @HAVE_STRPBRK@
+HAVE_STRPTIME = @HAVE_STRPTIME@
+HAVE_STRSEP = @HAVE_STRSEP@
+HAVE_STRTOD = @HAVE_STRTOD@
+HAVE_STRTOLD = @HAVE_STRTOLD@
+HAVE_STRTOLL = @HAVE_STRTOLL@
+HAVE_STRTOULL = @HAVE_STRTOULL@
+HAVE_STRUCT_ADDRINFO = @HAVE_STRUCT_ADDRINFO@
+HAVE_STRUCT_RANDOM_DATA = @HAVE_STRUCT_RANDOM_DATA@
+HAVE_STRUCT_SCHED_PARAM = @HAVE_STRUCT_SCHED_PARAM@
+HAVE_STRUCT_SIGACTION_SA_SIGACTION = @HAVE_STRUCT_SIGACTION_SA_SIGACTION@
+HAVE_STRUCT_SOCKADDR_STORAGE = @HAVE_STRUCT_SOCKADDR_STORAGE@
+HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY = @HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY@
+HAVE_STRUCT_TIMEVAL = @HAVE_STRUCT_TIMEVAL@
+HAVE_STRVERSCMP = @HAVE_STRVERSCMP@
+HAVE_SYMLINK = @HAVE_SYMLINK@
+HAVE_SYMLINKAT = @HAVE_SYMLINKAT@
+HAVE_SYS_BITYPES_H = @HAVE_SYS_BITYPES_H@
+HAVE_SYS_CDEFS_H = @HAVE_SYS_CDEFS_H@
+HAVE_SYS_FILE_H = @HAVE_SYS_FILE_H@
+HAVE_SYS_INTTYPES_H = @HAVE_SYS_INTTYPES_H@
+HAVE_SYS_IOCTL_H = @HAVE_SYS_IOCTL_H@
+HAVE_SYS_LOADAVG_H = @HAVE_SYS_LOADAVG_H@
+HAVE_SYS_PARAM_H = @HAVE_SYS_PARAM_H@
+HAVE_SYS_RANDOM_H = @HAVE_SYS_RANDOM_H@
+HAVE_SYS_SELECT_H = @HAVE_SYS_SELECT_H@
+HAVE_SYS_SOCKET_H = @HAVE_SYS_SOCKET_H@
+HAVE_SYS_TIME_H = @HAVE_SYS_TIME_H@
+HAVE_SYS_TYPES_H = @HAVE_SYS_TYPES_H@
+HAVE_SYS_UIO_H = @HAVE_SYS_UIO_H@
+HAVE_TIMEGM = @HAVE_TIMEGM@
+HAVE_TIMEZONE_T = @HAVE_TIMEZONE_T@
+HAVE_TYPE_VOLATILE_SIG_ATOMIC_T = @HAVE_TYPE_VOLATILE_SIG_ATOMIC_T@
+HAVE_UNISTD_H = @HAVE_UNISTD_H@
+HAVE_UNLINKAT = @HAVE_UNLINKAT@
+HAVE_UNLOCKPT = @HAVE_UNLOCKPT@
+HAVE_USLEEP = @HAVE_USLEEP@
+HAVE_UTIME = @HAVE_UTIME@
+HAVE_UTIMENSAT = @HAVE_UTIMENSAT@
+HAVE_UTIME_H = @HAVE_UTIME_H@
+HAVE_VALGRIND = @HAVE_VALGRIND@
+HAVE_VASPRINTF = @HAVE_VASPRINTF@
+HAVE_VDPRINTF = @HAVE_VDPRINTF@
+HAVE_VISIBILITY = @HAVE_VISIBILITY@
+HAVE_WCHAR_H = @HAVE_WCHAR_H@
+HAVE_WCHAR_T = @HAVE_WCHAR_T@
+HAVE_WCPCPY = @HAVE_WCPCPY@
+HAVE_WCPNCPY = @HAVE_WCPNCPY@
+HAVE_WCRTOMB = @HAVE_WCRTOMB@
+HAVE_WCSCASECMP = @HAVE_WCSCASECMP@
+HAVE_WCSCAT = @HAVE_WCSCAT@
+HAVE_WCSCHR = @HAVE_WCSCHR@
+HAVE_WCSCMP = @HAVE_WCSCMP@
+HAVE_WCSCOLL = @HAVE_WCSCOLL@
+HAVE_WCSCPY = @HAVE_WCSCPY@
+HAVE_WCSCSPN = @HAVE_WCSCSPN@
+HAVE_WCSDUP = @HAVE_WCSDUP@
+HAVE_WCSFTIME = @HAVE_WCSFTIME@
+HAVE_WCSLEN = @HAVE_WCSLEN@
+HAVE_WCSNCASECMP = @HAVE_WCSNCASECMP@
+HAVE_WCSNCAT = @HAVE_WCSNCAT@
+HAVE_WCSNCMP = @HAVE_WCSNCMP@
+HAVE_WCSNCPY = @HAVE_WCSNCPY@
+HAVE_WCSNLEN = @HAVE_WCSNLEN@
+HAVE_WCSNRTOMBS = @HAVE_WCSNRTOMBS@
+HAVE_WCSPBRK = @HAVE_WCSPBRK@
+HAVE_WCSRCHR = @HAVE_WCSRCHR@
+HAVE_WCSRTOMBS = @HAVE_WCSRTOMBS@
+HAVE_WCSSPN = @HAVE_WCSSPN@
+HAVE_WCSSTR = @HAVE_WCSSTR@
+HAVE_WCSTOK = @HAVE_WCSTOK@
+HAVE_WCSWIDTH = @HAVE_WCSWIDTH@
+HAVE_WCSXFRM = @HAVE_WCSXFRM@
+HAVE_WCTRANS_T = @HAVE_WCTRANS_T@
+HAVE_WCTYPE_H = @HAVE_WCTYPE_H@
+HAVE_WCTYPE_T = @HAVE_WCTYPE_T@
+HAVE_WINSOCK2_H = @HAVE_WINSOCK2_H@
+HAVE_WINT_T = @HAVE_WINT_T@
+HAVE_WMEMCHR = @HAVE_WMEMCHR@
+HAVE_WMEMCMP = @HAVE_WMEMCMP@
+HAVE_WMEMCPY = @HAVE_WMEMCPY@
+HAVE_WMEMMOVE = @HAVE_WMEMMOVE@
+HAVE_WMEMPCPY = @HAVE_WMEMPCPY@
+HAVE_WMEMSET = @HAVE_WMEMSET@
+HAVE_WS2TCPIP_H = @HAVE_WS2TCPIP_H@
+HAVE_XLOCALE_H = @HAVE_XLOCALE_H@
+HAVE__BOOL = @HAVE__BOOL@
+HAVE__EXIT = @HAVE__EXIT@
+HOSTENT_LIB = @HOSTENT_LIB@
+ICONV_CONST = @ICONV_CONST@
+ICONV_H = @ICONV_H@
+INCLUDE_NEXT = @INCLUDE_NEXT@
+INCLUDE_NEXT_AS_FIRST_DIRECTIVE = @INCLUDE_NEXT_AS_FIRST_DIRECTIVE@
+INET_NTOP_LIB = @INET_NTOP_LIB@
+INSTALL = @INSTALL@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+INT32_MAX_LT_INTMAX_MAX = @INT32_MAX_LT_INTMAX_MAX@
+INT64_MAX_EQ_LONG_MAX = @INT64_MAX_EQ_LONG_MAX@
+INTLLIBS = @INTLLIBS@
+INTL_MACOSX_LIBS = @INTL_MACOSX_LIBS@
+LDFLAGS = @LDFLAGS@
+LEX = @LEX@
+LEXLIB = @LEXLIB@
+LEX_OUTPUT_ROOT = @LEX_OUTPUT_ROOT@
+LIBGNUTLS = @LIBGNUTLS@
+LIBGNUTLS_PREFIX = @LIBGNUTLS_PREFIX@
+LIBGNU_LIBDEPS = @LIBGNU_LIBDEPS@
+LIBGNU_LTLIBDEPS = @LIBGNU_LTLIBDEPS@
+LIBICONV = @LIBICONV@
+LIBINTL = @LIBINTL@
+LIBMULTITHREAD = @LIBMULTITHREAD@
+LIBOBJS = @LIBOBJS@
+LIBPMULTITHREAD = @LIBPMULTITHREAD@
+LIBPSL_CFLAGS = @LIBPSL_CFLAGS@
+LIBPSL_LIBS = @LIBPSL_LIBS@
+LIBPTHREAD = @LIBPTHREAD@
+LIBS = @LIBS@
+LIBSOCKET = @LIBSOCKET@
+LIBSSL = @LIBSSL@
+LIBSSL_PREFIX = @LIBSSL_PREFIX@
+LIBSTDTHREAD = @LIBSTDTHREAD@
+LIBTHREAD = @LIBTHREAD@
+LIBUNISTRING = @LIBUNISTRING@
+LIBUNISTRING_PREFIX = @LIBUNISTRING_PREFIX@
+LIBUNISTRING_UNICASE_H = @LIBUNISTRING_UNICASE_H@
+LIBUNISTRING_UNICTYPE_H = @LIBUNISTRING_UNICTYPE_H@
+LIBUNISTRING_UNINORM_H = @LIBUNISTRING_UNINORM_H@
+LIBUNISTRING_UNISTR_H = @LIBUNISTRING_UNISTR_H@
+LIBUNISTRING_UNITYPES_H = @LIBUNISTRING_UNITYPES_H@
+LIBUNISTRING_UNIWIDTH_H = @LIBUNISTRING_UNIWIDTH_H@
+LIB_CLOCK_GETTIME = @LIB_CLOCK_GETTIME@
+LIB_CRYPTO = @LIB_CRYPTO@
+LIB_FUZZING_ENGINE = @LIB_FUZZING_ENGINE@
+LIB_GETRANDOM = @LIB_GETRANDOM@
+LIB_HARD_LOCALE = @LIB_HARD_LOCALE@
+LIB_MBRTOWC = @LIB_MBRTOWC@
+LIB_NANOSLEEP = @LIB_NANOSLEEP@
+LIB_NL_LANGINFO = @LIB_NL_LANGINFO@
+LIB_POSIX_SPAWN = @LIB_POSIX_SPAWN@
+LIB_SCHED_YIELD = @LIB_SCHED_YIELD@
+LIB_SELECT = @LIB_SELECT@
+LIB_SETLOCALE_NULL = @LIB_SETLOCALE_NULL@
+LIMITS_H = @LIMITS_H@
+LOCALCHARSET_TESTS_ENVIRONMENT = @LOCALCHARSET_TESTS_ENVIRONMENT@
+LOCALE_FR = @LOCALE_FR@
+LOCALE_FR_UTF8 = @LOCALE_FR_UTF8@
+LOCALE_JA = @LOCALE_JA@
+LOCALE_ZH_CN = @LOCALE_ZH_CN@
+LTLIBGNUTLS = @LTLIBGNUTLS@
+LTLIBICONV = @LTLIBICONV@
+LTLIBINTL = @LTLIBINTL@
+LTLIBMULTITHREAD = @LTLIBMULTITHREAD@
+LTLIBOBJS = @LTLIBOBJS@
+LTLIBSSL = @LTLIBSSL@
+LTLIBTHREAD = @LTLIBTHREAD@
+LTLIBUNISTRING = @LTLIBUNISTRING@
+MAKEINFO = @MAKEINFO@
+METALINK_CFLAGS = @METALINK_CFLAGS@
+METALINK_LIBS = @METALINK_LIBS@
+MKDIR_P = @MKDIR_P@
+MSGFMT = @MSGFMT@
+MSGFMT_015 = @MSGFMT_015@
+MSGMERGE = @MSGMERGE@
+NETINET_IN_H = @NETINET_IN_H@
+NETTLE_LIBS = @NETTLE_LIBS@
+NEXT_ARPA_INET_H = @NEXT_ARPA_INET_H@
+NEXT_AS_FIRST_DIRECTIVE_ARPA_INET_H = @NEXT_AS_FIRST_DIRECTIVE_ARPA_INET_H@
+NEXT_AS_FIRST_DIRECTIVE_CTYPE_H = @NEXT_AS_FIRST_DIRECTIVE_CTYPE_H@
+NEXT_AS_FIRST_DIRECTIVE_DIRENT_H = @NEXT_AS_FIRST_DIRECTIVE_DIRENT_H@
+NEXT_AS_FIRST_DIRECTIVE_ERRNO_H = @NEXT_AS_FIRST_DIRECTIVE_ERRNO_H@
+NEXT_AS_FIRST_DIRECTIVE_FCNTL_H = @NEXT_AS_FIRST_DIRECTIVE_FCNTL_H@
+NEXT_AS_FIRST_DIRECTIVE_FLOAT_H = @NEXT_AS_FIRST_DIRECTIVE_FLOAT_H@
+NEXT_AS_FIRST_DIRECTIVE_FNMATCH_H = @NEXT_AS_FIRST_DIRECTIVE_FNMATCH_H@
+NEXT_AS_FIRST_DIRECTIVE_GETOPT_H = @NEXT_AS_FIRST_DIRECTIVE_GETOPT_H@
+NEXT_AS_FIRST_DIRECTIVE_ICONV_H = @NEXT_AS_FIRST_DIRECTIVE_ICONV_H@
+NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H = @NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H@
+NEXT_AS_FIRST_DIRECTIVE_LANGINFO_H = @NEXT_AS_FIRST_DIRECTIVE_LANGINFO_H@
+NEXT_AS_FIRST_DIRECTIVE_LIMITS_H = @NEXT_AS_FIRST_DIRECTIVE_LIMITS_H@
+NEXT_AS_FIRST_DIRECTIVE_LOCALE_H = @NEXT_AS_FIRST_DIRECTIVE_LOCALE_H@
+NEXT_AS_FIRST_DIRECTIVE_NETDB_H = @NEXT_AS_FIRST_DIRECTIVE_NETDB_H@
+NEXT_AS_FIRST_DIRECTIVE_NETINET_IN_H = @NEXT_AS_FIRST_DIRECTIVE_NETINET_IN_H@
+NEXT_AS_FIRST_DIRECTIVE_SCHED_H = @NEXT_AS_FIRST_DIRECTIVE_SCHED_H@
+NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H = @NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H@
+NEXT_AS_FIRST_DIRECTIVE_SPAWN_H = @NEXT_AS_FIRST_DIRECTIVE_SPAWN_H@
+NEXT_AS_FIRST_DIRECTIVE_STDDEF_H = @NEXT_AS_FIRST_DIRECTIVE_STDDEF_H@
+NEXT_AS_FIRST_DIRECTIVE_STDINT_H = @NEXT_AS_FIRST_DIRECTIVE_STDINT_H@
+NEXT_AS_FIRST_DIRECTIVE_STDIO_H = @NEXT_AS_FIRST_DIRECTIVE_STDIO_H@
+NEXT_AS_FIRST_DIRECTIVE_STDLIB_H = @NEXT_AS_FIRST_DIRECTIVE_STDLIB_H@
+NEXT_AS_FIRST_DIRECTIVE_STRINGS_H = @NEXT_AS_FIRST_DIRECTIVE_STRINGS_H@
+NEXT_AS_FIRST_DIRECTIVE_STRING_H = @NEXT_AS_FIRST_DIRECTIVE_STRING_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_FILE_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_FILE_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_IOCTL_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_IOCTL_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_RANDOM_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_RANDOM_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_SOCKET_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_SOCKET_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_STAT_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_STAT_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_UIO_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_UIO_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_WAIT_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_WAIT_H@
+NEXT_AS_FIRST_DIRECTIVE_TIME_H = @NEXT_AS_FIRST_DIRECTIVE_TIME_H@
+NEXT_AS_FIRST_DIRECTIVE_UNISTD_H = @NEXT_AS_FIRST_DIRECTIVE_UNISTD_H@
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+@WITH_XATTR_TRUE@XATTR_OBJ = xattr.c
+EXTRA_DIST = css.l css.c css_.c build_info.c.in build_info.c
+wget_SOURCES = connect.c convert.c cookies.c ftp.c \
+ css_.c css-url.c \
+ ftp-basic.c ftp-ls.c hash.c host.c hsts.c html-parse.c html-url.c \
+ http.c init.c log.c main.c netrc.c progress.c ptimer.c \
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+ css-url.h css-tokens.h connect.h convert.h cookies.h \
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+ http.h http-ntlm.h init.h log.h mswindows.h netrc.h \
+ options.h progress.h ptimer.h recur.h res.h retr.h \
+ spider.h ssl.h sysdep.h url.h warc.h utils.h wget.h iri.h \
+ exits.h version.h metalink.h xattr.h
+
+nodist_wget_SOURCES = version.c
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+LDADD = $(CODE_COVERAGE_LIBS) $(LIBOBJS) ../lib/libgnu.a $(GETADDRINFO_LIB) $(HOSTENT_LIB)\
+ $(INET_NTOP_LIB) $(LIBSOCKET) $(LIB_CLOCK_GETTIME) $(LIB_CRYPTO)\
+ $(LIB_NANOSLEEP) $(LIB_POSIX_SPAWN) $(LIB_SELECT) $(LIBICONV) $(LIBINTL)\
+ $(LIBTHREAD) $(LIBUNISTRING) $(SERVENT_LIB)
+
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+ESCAPEQUOTE = sed -e 's/[\\"]/\\&/g' -e 's/\\"/"/' -e 's/\\";$$/";/'
+check_LIBRARIES = libunittest.a
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+libunittest_a_CPPFLAGS = -DTESTING "-I$(top_builddir)/lib" "-I$(top_srcdir)/lib" $(CODE_COVERAGE_CPPLAGS)
+libunittest_a_LIBADD = $(LIBOBJS)
+CLEANFILES = *~ *.bak core core.[0-9]* build_info.c version.c
+all: config.h
+ $(MAKE) $(AM_MAKEFLAGS) all-am
+
+.SUFFIXES:
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+ case '$(am__configure_deps)' in \
+ *$$dep*) \
+ ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+ && { if test -f $@; then exit 0; else break; fi; }; \
+ exit 1;; \
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+ "$$@" $$unique; \
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+ $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
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+ fi; \
+ fi
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+ for i in $$list; do \
+ if test -f "$$i"; then \
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+ else \
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+ done >> $(top_builddir)/cscope.files
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+ install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+ install; \
+ else \
+ $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+ install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+ "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+ fi
+mostlyclean-generic:
+
+clean-generic:
+ -test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+ -test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+ -test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+ @echo "This command is intended for maintainers to use"
+ @echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-binPROGRAMS clean-checkLIBRARIES clean-generic \
+ mostlyclean-am
+
+distclean: distclean-am
+ -rm -f $(DEPDIR)/ftp-opie.Po
+ -rm -f $(DEPDIR)/gnutls.Po
+ -rm -f $(DEPDIR)/http-ntlm.Po
+ -rm -f $(DEPDIR)/mswindows.Po
+ -rm -f $(DEPDIR)/openssl.Po
+ -rm -f ./$(DEPDIR)/build_info.Po
+ -rm -f ./$(DEPDIR)/connect.Po
+ -rm -f ./$(DEPDIR)/convert.Po
+ -rm -f ./$(DEPDIR)/cookies.Po
+ -rm -f ./$(DEPDIR)/css-url.Po
+ -rm -f ./$(DEPDIR)/css_.Po
+ -rm -f ./$(DEPDIR)/exits.Po
+ -rm -f ./$(DEPDIR)/ftp-basic.Po
+ -rm -f ./$(DEPDIR)/ftp-ls.Po
+ -rm -f ./$(DEPDIR)/ftp.Po
+ -rm -f ./$(DEPDIR)/hash.Po
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+ -rm -f ./$(DEPDIR)/hsts.Po
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+ -rm -f ./$(DEPDIR)/libunittest_a-convert.Po
+ -rm -f ./$(DEPDIR)/libunittest_a-cookies.Po
+ -rm -f ./$(DEPDIR)/libunittest_a-css-url.Po
+ -rm -f ./$(DEPDIR)/libunittest_a-css_.Po
+ -rm -f ./$(DEPDIR)/libunittest_a-exits.Po
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+dvi: dvi-am
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+
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+
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+install-exec-am: install-binPROGRAMS
+
+install-html: install-html-am
+
+install-html-am:
+
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+
+install-info-am:
+
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+
+install-pdf-am:
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+
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+
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+
+maintainer-clean: maintainer-clean-am
+ -rm -f $(DEPDIR)/ftp-opie.Po
+ -rm -f $(DEPDIR)/gnutls.Po
+ -rm -f $(DEPDIR)/http-ntlm.Po
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+ -rm -f $(DEPDIR)/openssl.Po
+ -rm -f ./$(DEPDIR)/build_info.Po
+ -rm -f ./$(DEPDIR)/connect.Po
+ -rm -f ./$(DEPDIR)/convert.Po
+ -rm -f ./$(DEPDIR)/cookies.Po
+ -rm -f ./$(DEPDIR)/css-url.Po
+ -rm -f ./$(DEPDIR)/css_.Po
+ -rm -f ./$(DEPDIR)/exits.Po
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+ -rm -f ./$(DEPDIR)/hsts.Po
+ -rm -f ./$(DEPDIR)/html-parse.Po
+ -rm -f ./$(DEPDIR)/html-url.Po
+ -rm -f ./$(DEPDIR)/http.Po
+ -rm -f ./$(DEPDIR)/init.Po
+ -rm -f ./$(DEPDIR)/iri.Po
+ -rm -f ./$(DEPDIR)/libunittest_a-build_info.Po
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+ -rm -f ./$(DEPDIR)/libunittest_a-convert.Po
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+ -rm -f ./$(DEPDIR)/libunittest_a-css-url.Po
+ -rm -f ./$(DEPDIR)/libunittest_a-css_.Po
+ -rm -f ./$(DEPDIR)/libunittest_a-exits.Po
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+ clean-binPROGRAMS clean-checkLIBRARIES clean-generic \
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+ install-am install-binPROGRAMS install-data install-data-am \
+ install-dvi install-dvi-am install-exec install-exec-am \
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+.PRECIOUS: Makefile
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+
+build_info.c: $(srcdir)/Makefile.am $(srcdir)/build_info.c.in
+ if test -n "$(VPATH)"; then cp "$(srcdir)/build_info.c.in" .; fi
+ $(PERL) "$(top_srcdir)/build-aux/build_info.pl" \
+ "$(top_builddir)/src/build_info.c"
+ if test -n "$(VPATH)"; then rm -f build_info.c.in; fi
+version.c: $(wget_SOURCES) ../lib/libgnu.a
+ echo '/* version.c */' > $@
+ echo '/* Autogenerated by Makefile - DO NOT EDIT */' >> $@
+ echo '' >> $@
+ echo '#include "version.h"' >> $@
+ echo 'const char *version_string = "@VERSION@";' >> $@
+ echo 'const char *compilation_string = "'$(COMPILE)'";' \
+ | $(ESCAPEQUOTE) >> $@
+ echo 'const char *link_string = "'$(CCLD) $(AM_CFLAGS) $(CFLAGS) \
+ $(AM_LDFLAGS) $(LDFLAGS) $(LIBS) $(wget_LDADD)'";' \
+ | $(ESCAPEQUOTE) >> $@
+
+css.c: $(srcdir)/css.l
+ $(LEX) $(LFLAGS) -o$@ $^
+
+css_.c: css.c
+ echo '#include "wget.h"' > $@
+ cat css.c >> $@
+
+distclean-local:
+ rm -f css.c css_.c
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/build_info.c b/src/build_info.c
new file mode 100644
index 0000000..bf6e6a9
--- /dev/null
+++ b/src/build_info.c
@@ -0,0 +1,101 @@
+/* Autogenerated by build_info.pl - DO NOT EDIT */
+
+/* This stores global variables that are initialized with
+ preprocessor declarations for output with the --version flag.
+
+ Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+ 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. */
+
+#include "wget.h"
+#include <stdio.h>
+#include "version.h"
+
+const char *compiled_features[] =
+{
+
+#if defined HAVE_LIBCARES
+ "+cares",
+#else
+ "-cares",
+#endif
+
+#if defined ENABLE_DIGEST
+ "+digest",
+#else
+ "-digest",
+#endif
+
+#if defined HAVE_GPGME
+ "+gpgme",
+#else
+ "-gpgme",
+#endif
+
+#if defined HAVE_SSL
+ "+https",
+#else
+ "-https",
+#endif
+
+#if defined ENABLE_IPV6
+ "+ipv6",
+#else
+ "-ipv6",
+#endif
+
+#if defined ENABLE_IRI
+ "+iri",
+#else
+ "-iri",
+#endif
+
+#if SIZEOF_OFF_T >= 8 || defined WINDOWS
+ "+large-file",
+#else
+ "-large-file",
+#endif
+
+#if defined HAVE_METALINK
+ "+metalink",
+#else
+ "-metalink",
+#endif
+
+#if defined ENABLE_NLS
+ "+nls",
+#else
+ "-nls",
+#endif
+
+#if defined ENABLE_NTLM
+ "+ntlm",
+#else
+ "-ntlm",
+#endif
+
+#if defined ENABLE_OPIE
+ "+opie",
+#else
+ "-opie",
+#endif
+
+#if defined HAVE_LIBPSL
+ "+psl",
+#else
+ "-psl",
+#endif
+
+#if defined HAVE_LIBSSL || defined HAVE_LIBSSL32
+ "+ssl/openssl",
+#elif defined HAVE_LIBGNUTLS
+ "+ssl/gnutls",
+#else
+ "-ssl",
+#endif
+
+
+ /* sentinel value */
+ NULL
+};
+
+
diff --git a/src/build_info.c.in b/src/build_info.c.in
new file mode 100644
index 0000000..c7493e9
--- /dev/null
+++ b/src/build_info.c.in
@@ -0,0 +1,18 @@
+digest defined ENABLE_DIGEST
+https defined HAVE_SSL
+ipv6 defined ENABLE_IPV6
+iri defined ENABLE_IRI
+large-file SIZEOF_OFF_T >= 8 || defined WINDOWS
+
+nls defined ENABLE_NLS
+ntlm defined ENABLE_NTLM
+opie defined ENABLE_OPIE
+psl defined HAVE_LIBPSL
+cares defined HAVE_LIBCARES
+
+metalink defined HAVE_METALINK
+gpgme defined HAVE_GPGME
+
+ssl choice:
+ openssl defined HAVE_LIBSSL || defined HAVE_LIBSSL32
+ gnutls defined HAVE_LIBGNUTLS
diff --git a/src/config.h.in b/src/config.h.in
new file mode 100644
index 0000000..936d100
--- /dev/null
+++ b/src/config.h.in
@@ -0,0 +1,2685 @@
+/* src/config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define if building universal (internal helper macro) */
+#undef AC_APPLE_UNIVERSAL_BUILD
+
+/* Define to the number of bits in type 'ptrdiff_t'. */
+#undef BITSIZEOF_PTRDIFF_T
+
+/* Define to the number of bits in type 'sig_atomic_t'. */
+#undef BITSIZEOF_SIG_ATOMIC_T
+
+/* Define to the number of bits in type 'size_t'. */
+#undef BITSIZEOF_SIZE_T
+
+/* Define to the number of bits in type 'wchar_t'. */
+#undef BITSIZEOF_WCHAR_T
+
+/* Define to the number of bits in type 'wint_t'. */
+#undef BITSIZEOF_WINT_T
+
+/* Define to 1 if using `alloca.c'. */
+#undef C_ALLOCA
+
+/* Define as the bit index in the word where to find bit 0 of the exponent of
+ 'double'. */
+#undef DBL_EXPBIT0_BIT
+
+/* Define as the word index where to find the exponent of 'double'. */
+#undef DBL_EXPBIT0_WORD
+
+/* the name of the file descriptor member of DIR */
+#undef DIR_FD_MEMBER_NAME
+
+#ifdef DIR_FD_MEMBER_NAME
+# define DIR_TO_FD(Dir_p) ((Dir_p)->DIR_FD_MEMBER_NAME)
+#else
+# define DIR_TO_FD(Dir_p) -1
+#endif
+
+
+/* Define to 1 if // is a file system root distinct from /. */
+#undef DOUBLE_SLASH_IS_DISTINCT_ROOT
+
+/* Define if struct dirent has a member d_ino that actually works. */
+#undef D_INO_IN_DIRENT
+
+/* Define if you want the debug output support compiled in. */
+#undef ENABLE_DEBUG
+
+/* Define if you want the HTTP Digest Authorization compiled in. */
+#undef ENABLE_DIGEST
+
+/* Define if IPv6 support is enabled. */
+#undef ENABLE_IPV6
+
+/* Define if IRI support is enabled. */
+#undef ENABLE_IRI
+
+/* Define to 1 if translation of program messages to the user's native
+ language is requested. */
+#undef ENABLE_NLS
+
+/* Define if you want the NTLM authorization support compiled in. */
+#undef ENABLE_NTLM
+
+/* Define if you want Opie support for FTP compiled in. */
+#undef ENABLE_OPIE
+
+/* Define if you want file meta-data storing into POSIX Extended Attributes
+ compiled in. */
+#undef ENABLE_XATTR
+
+/* Define this to 1 if F_DUPFD behavior does not match POSIX */
+#undef FCNTL_DUPFD_BUGGY
+
+/* Define to nothing if C supports flexible array members, and to 1 if it does
+ not. That way, with a declaration like 'struct s { int n; short
+ d[FLEXIBLE_ARRAY_MEMBER]; };', the struct hack can be used with pre-C99
+ compilers. Use 'FLEXSIZEOF (struct s, d, N * sizeof (short))' to calculate
+ the size in bytes of such a struct containing an N-element array. */
+#undef FLEXIBLE_ARRAY_MEMBER
+
+/* Define to 1 if fopen() fails to recognize a trailing slash. */
+#undef FOPEN_TRAILING_SLASH_BUG
+
+/* Define to 1 if the system's ftello function has the Solaris bug. */
+#undef FTELLO_BROKEN_AFTER_SWITCHING_FROM_READ_TO_WRITE
+
+/* Define to 1 if fflush is known to work on stdin as per POSIX.1-2008, 0 if
+ fflush is known to not work, -1 if unknown. */
+#undef FUNC_FFLUSH_STDIN
+
+/* Define to 1 if mkdir mistakenly creates a directory given with a trailing
+ dot component. */
+#undef FUNC_MKDIR_DOT_BUG
+
+/* Define to 1 if nl_langinfo (YESEXPR) returns a non-empty string. */
+#undef FUNC_NL_LANGINFO_YESEXPR_WORKS
+
+/* Define to 1 if realpath() can malloc memory, always gives an absolute path,
+ and handles trailing slash correctly. */
+#undef FUNC_REALPATH_WORKS
+
+/* Define to 1 if futimesat mishandles a NULL file name. */
+#undef FUTIMESAT_NULL_BUG
+
+/* Define to 1 if this is a fuzzing build */
+#undef FUZZING
+
+/* Define to the type of elements in the array set by `getgroups'. Usually
+ this is either `int' or `gid_t'. */
+#undef GETGROUPS_T
+
+/* Define this to 1 if getgroups(0,NULL) does not return the number of groups.
+ */
+#undef GETGROUPS_ZERO_BUG
+
+/* Define this to 'void' or 'struct timezone' to match the system's
+ declaration of the second argument to gettimeofday. */
+#undef GETTIMEOFDAY_TIMEZONE
+
+/* Compile Gnulib crypto stream ops. */
+#undef GL_COMPILE_CRYPTO_STREAM
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module canonicalize shall be considered present. */
+#undef GNULIB_CANONICALIZE
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module dirname shall be considered present. */
+#undef GNULIB_DIRNAME
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module fdopendir shall be considered present. */
+#undef GNULIB_FDOPENDIR
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module fd-safer-flag shall be considered present. */
+#undef GNULIB_FD_SAFER_FLAG
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module fflush shall be considered present. */
+#undef GNULIB_FFLUSH
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module fnmatch-gnu shall be considered present. */
+#undef GNULIB_FNMATCH_GNU
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module fopen-gnu shall be considered present. */
+#undef GNULIB_FOPEN_GNU
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module fscanf shall be considered present. */
+#undef GNULIB_FSCANF
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module getcwd shall be considered present. */
+#undef GNULIB_GETCWD
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module isblank shall be considered present. */
+#undef GNULIB_ISBLANK
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module lock shall be considered present. */
+#undef GNULIB_LOCK
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module mkostemp shall be considered present. */
+#undef GNULIB_MKOSTEMP
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module msvc-nothrow shall be considered present. */
+#undef GNULIB_MSVC_NOTHROW
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module openat shall be considered present. */
+#undef GNULIB_OPENAT
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module pipe2-safer shall be considered present. */
+#undef GNULIB_PIPE2_SAFER
+
+/* Define to 1 if printf and friends should be labeled with attribute
+ "__gnu_printf__" instead of "__printf__" */
+#undef GNULIB_PRINTF_ATTRIBUTE_FLAVOR_GNU
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module scanf shall be considered present. */
+#undef GNULIB_SCANF
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module sigpipe shall be considered present. */
+#undef GNULIB_SIGPIPE
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module snprintf shall be considered present. */
+#undef GNULIB_SNPRINTF
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module strerror shall be considered present. */
+#undef GNULIB_STRERROR
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module strerror_r-posix shall be considered present. */
+#undef GNULIB_STRERROR_R_POSIX
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module tempname shall be considered present. */
+#undef GNULIB_TEMPNAME
+
+/* Define to 1 when the gnulib module accept should be tested. */
+#undef GNULIB_TEST_ACCEPT
+
+/* Define to 1 when the gnulib module access should be tested. */
+#undef GNULIB_TEST_ACCESS
+
+/* Define to 1 when the gnulib module bind should be tested. */
+#undef GNULIB_TEST_BIND
+
+/* Define to 1 when the gnulib module btowc should be tested. */
+#undef GNULIB_TEST_BTOWC
+
+/* Define to 1 when the gnulib module canonicalize should be tested. */
+#undef GNULIB_TEST_CANONICALIZE
+
+/* Define to 1 when the gnulib module canonicalize_file_name should be tested.
+ */
+#undef GNULIB_TEST_CANONICALIZE_FILE_NAME
+
+/* Define to 1 when the gnulib module chdir should be tested. */
+#undef GNULIB_TEST_CHDIR
+
+/* Define to 1 when the gnulib module cloexec should be tested. */
+#undef GNULIB_TEST_CLOEXEC
+
+/* Define to 1 when the gnulib module close should be tested. */
+#undef GNULIB_TEST_CLOSE
+
+/* Define to 1 when the gnulib module closedir should be tested. */
+#undef GNULIB_TEST_CLOSEDIR
+
+/* Define to 1 when the gnulib module connect should be tested. */
+#undef GNULIB_TEST_CONNECT
+
+/* Define to 1 when the gnulib module dirfd should be tested. */
+#undef GNULIB_TEST_DIRFD
+
+/* Define to 1 when the gnulib module dup should be tested. */
+#undef GNULIB_TEST_DUP
+
+/* Define to 1 when the gnulib module dup2 should be tested. */
+#undef GNULIB_TEST_DUP2
+
+/* Define to 1 when the gnulib module environ should be tested. */
+#undef GNULIB_TEST_ENVIRON
+
+/* Define to 1 when the gnulib module fchdir should be tested. */
+#undef GNULIB_TEST_FCHDIR
+
+/* Define to 1 when the gnulib module fcntl should be tested. */
+#undef GNULIB_TEST_FCNTL
+
+/* Define to 1 when the gnulib module fdopendir should be tested. */
+#undef GNULIB_TEST_FDOPENDIR
+
+/* Define to 1 when the gnulib module fflush should be tested. */
+#undef GNULIB_TEST_FFLUSH
+
+/* Define to 1 when the gnulib module fnmatch should be tested. */
+#undef GNULIB_TEST_FNMATCH
+
+/* Define to 1 when the gnulib module fopen should be tested. */
+#undef GNULIB_TEST_FOPEN
+
+/* Define to 1 when the gnulib module fpurge should be tested. */
+#undef GNULIB_TEST_FPURGE
+
+/* Define to 1 when the gnulib module free-posix should be tested. */
+#undef GNULIB_TEST_FREE_POSIX
+
+/* Define to 1 when the gnulib module fseek should be tested. */
+#undef GNULIB_TEST_FSEEK
+
+/* Define to 1 when the gnulib module fseeko should be tested. */
+#undef GNULIB_TEST_FSEEKO
+
+/* Define to 1 when the gnulib module fstat should be tested. */
+#undef GNULIB_TEST_FSTAT
+
+/* Define to 1 when the gnulib module fstatat should be tested. */
+#undef GNULIB_TEST_FSTATAT
+
+/* Define to 1 when the gnulib module ftell should be tested. */
+#undef GNULIB_TEST_FTELL
+
+/* Define to 1 when the gnulib module ftello should be tested. */
+#undef GNULIB_TEST_FTELLO
+
+/* Define to 1 when the gnulib module futimens should be tested. */
+#undef GNULIB_TEST_FUTIMENS
+
+/* Define to 1 when the gnulib module getaddrinfo should be tested. */
+#undef GNULIB_TEST_GETADDRINFO
+
+/* Define to 1 when the gnulib module getcwd should be tested. */
+#undef GNULIB_TEST_GETCWD
+
+/* Define to 1 when the gnulib module getdelim should be tested. */
+#undef GNULIB_TEST_GETDELIM
+
+/* Define to 1 when the gnulib module getdtablesize should be tested. */
+#undef GNULIB_TEST_GETDTABLESIZE
+
+/* Define to 1 when the gnulib module getgroups should be tested. */
+#undef GNULIB_TEST_GETGROUPS
+
+/* Define to 1 when the gnulib module getline should be tested. */
+#undef GNULIB_TEST_GETLINE
+
+/* Define to 1 when the gnulib module getopt-posix should be tested. */
+#undef GNULIB_TEST_GETOPT_POSIX
+
+/* Define to 1 when the gnulib module getpass should be tested. */
+#undef GNULIB_TEST_GETPASS
+
+/* Define to 1 when the gnulib module getpeername should be tested. */
+#undef GNULIB_TEST_GETPEERNAME
+
+/* Define to 1 when the gnulib module getrandom should be tested. */
+#undef GNULIB_TEST_GETRANDOM
+
+/* Define to 1 when the gnulib module getsockname should be tested. */
+#undef GNULIB_TEST_GETSOCKNAME
+
+/* Define to 1 when the gnulib module gettimeofday should be tested. */
+#undef GNULIB_TEST_GETTIMEOFDAY
+
+/* Define to 1 when the gnulib module group-member should be tested. */
+#undef GNULIB_TEST_GROUP_MEMBER
+
+/* Define to 1 when the gnulib module ioctl should be tested. */
+#undef GNULIB_TEST_IOCTL
+
+/* Define to 1 when the gnulib module iswblank should be tested. */
+#undef GNULIB_TEST_ISWBLANK
+
+/* Define to 1 when the gnulib module iswdigit should be tested. */
+#undef GNULIB_TEST_ISWDIGIT
+
+/* Define to 1 when the gnulib module iswxdigit should be tested. */
+#undef GNULIB_TEST_ISWXDIGIT
+
+/* Define to 1 when the gnulib module link should be tested. */
+#undef GNULIB_TEST_LINK
+
+/* Define to 1 when the gnulib module listen should be tested. */
+#undef GNULIB_TEST_LISTEN
+
+/* Define to 1 when the gnulib module localeconv should be tested. */
+#undef GNULIB_TEST_LOCALECONV
+
+/* Define to 1 when the gnulib module lseek should be tested. */
+#undef GNULIB_TEST_LSEEK
+
+/* Define to 1 when the gnulib module lstat should be tested. */
+#undef GNULIB_TEST_LSTAT
+
+/* Define to 1 when the gnulib module malloc-posix should be tested. */
+#undef GNULIB_TEST_MALLOC_POSIX
+
+/* Define to 1 when the gnulib module mbrtowc should be tested. */
+#undef GNULIB_TEST_MBRTOWC
+
+/* Define to 1 when the gnulib module mbsinit should be tested. */
+#undef GNULIB_TEST_MBSINIT
+
+/* Define to 1 when the gnulib module mbsrtowcs should be tested. */
+#undef GNULIB_TEST_MBSRTOWCS
+
+/* Define to 1 when the gnulib module mbtowc should be tested. */
+#undef GNULIB_TEST_MBTOWC
+
+/* Define to 1 when the gnulib module memchr should be tested. */
+#undef GNULIB_TEST_MEMCHR
+
+/* Define to 1 when the gnulib module mempcpy should be tested. */
+#undef GNULIB_TEST_MEMPCPY
+
+/* Define to 1 when the gnulib module memrchr should be tested. */
+#undef GNULIB_TEST_MEMRCHR
+
+/* Define to 1 when the gnulib module mkdir should be tested. */
+#undef GNULIB_TEST_MKDIR
+
+/* Define to 1 when the gnulib module mkostemp should be tested. */
+#undef GNULIB_TEST_MKOSTEMP
+
+/* Define to 1 when the gnulib module mkstemp should be tested. */
+#undef GNULIB_TEST_MKSTEMP
+
+/* Define to 1 when the gnulib module mktime should be tested. */
+#undef GNULIB_TEST_MKTIME
+
+/* Define to 1 when the gnulib module nanosleep should be tested. */
+#undef GNULIB_TEST_NANOSLEEP
+
+/* Define to 1 when the gnulib module nl_langinfo should be tested. */
+#undef GNULIB_TEST_NL_LANGINFO
+
+/* Define to 1 when the gnulib module open should be tested. */
+#undef GNULIB_TEST_OPEN
+
+/* Define to 1 when the gnulib module openat should be tested. */
+#undef GNULIB_TEST_OPENAT
+
+/* Define to 1 when the gnulib module opendir should be tested. */
+#undef GNULIB_TEST_OPENDIR
+
+/* Define to 1 when the gnulib module pipe should be tested. */
+#undef GNULIB_TEST_PIPE
+
+/* Define to 1 when the gnulib module pipe2 should be tested. */
+#undef GNULIB_TEST_PIPE2
+
+/* Define to 1 when the gnulib module posix_spawn should be tested. */
+#undef GNULIB_TEST_POSIX_SPAWN
+
+/* Define to 1 when the gnulib module posix_spawnattr_destroy should be
+ tested. */
+#undef GNULIB_TEST_POSIX_SPAWNATTR_DESTROY
+
+/* Define to 1 when the gnulib module posix_spawnattr_init should be tested.
+ */
+#undef GNULIB_TEST_POSIX_SPAWNATTR_INIT
+
+/* Define to 1 when the gnulib module posix_spawnattr_setflags should be
+ tested. */
+#undef GNULIB_TEST_POSIX_SPAWNATTR_SETFLAGS
+
+/* Define to 1 when the gnulib module posix_spawnattr_setpgroup should be
+ tested. */
+#undef GNULIB_TEST_POSIX_SPAWNATTR_SETPGROUP
+
+/* Define to 1 when the gnulib module posix_spawnattr_setsigmask should be
+ tested. */
+#undef GNULIB_TEST_POSIX_SPAWNATTR_SETSIGMASK
+
+/* Define to 1 when the gnulib module posix_spawnp should be tested. */
+#undef GNULIB_TEST_POSIX_SPAWNP
+
+/* Define to 1 when the gnulib module posix_spawn_file_actions_addchdir should
+ be tested. */
+#undef GNULIB_TEST_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR
+
+/* Define to 1 when the gnulib module posix_spawn_file_actions_addclose should
+ be tested. */
+#undef GNULIB_TEST_POSIX_SPAWN_FILE_ACTIONS_ADDCLOSE
+
+/* Define to 1 when the gnulib module posix_spawn_file_actions_adddup2 should
+ be tested. */
+#undef GNULIB_TEST_POSIX_SPAWN_FILE_ACTIONS_ADDDUP2
+
+/* Define to 1 when the gnulib module posix_spawn_file_actions_addopen should
+ be tested. */
+#undef GNULIB_TEST_POSIX_SPAWN_FILE_ACTIONS_ADDOPEN
+
+/* Define to 1 when the gnulib module posix_spawn_file_actions_destroy should
+ be tested. */
+#undef GNULIB_TEST_POSIX_SPAWN_FILE_ACTIONS_DESTROY
+
+/* Define to 1 when the gnulib module posix_spawn_file_actions_init should be
+ tested. */
+#undef GNULIB_TEST_POSIX_SPAWN_FILE_ACTIONS_INIT
+
+/* Define to 1 when the gnulib module raise should be tested. */
+#undef GNULIB_TEST_RAISE
+
+/* Define to 1 when the gnulib module rawmemchr should be tested. */
+#undef GNULIB_TEST_RAWMEMCHR
+
+/* Define to 1 when the gnulib module readdir should be tested. */
+#undef GNULIB_TEST_READDIR
+
+/* Define to 1 when the gnulib module readlink should be tested. */
+#undef GNULIB_TEST_READLINK
+
+/* Define to 1 when the gnulib module realloc-posix should be tested. */
+#undef GNULIB_TEST_REALLOC_POSIX
+
+/* Define to 1 when the gnulib module recv should be tested. */
+#undef GNULIB_TEST_RECV
+
+/* Define to 1 when the gnulib module rewinddir should be tested. */
+#undef GNULIB_TEST_REWINDDIR
+
+/* Define to 1 when the gnulib module secure_getenv should be tested. */
+#undef GNULIB_TEST_SECURE_GETENV
+
+/* Define to 1 when the gnulib module select should be tested. */
+#undef GNULIB_TEST_SELECT
+
+/* Define to 1 when the gnulib module send should be tested. */
+#undef GNULIB_TEST_SEND
+
+/* Define to 1 when the gnulib module setlocale_null should be tested. */
+#undef GNULIB_TEST_SETLOCALE_NULL
+
+/* Define to 1 when the gnulib module setsockopt should be tested. */
+#undef GNULIB_TEST_SETSOCKOPT
+
+/* Define to 1 when the gnulib module sigaction should be tested. */
+#undef GNULIB_TEST_SIGACTION
+
+/* Define to 1 when the gnulib module sigprocmask should be tested. */
+#undef GNULIB_TEST_SIGPROCMASK
+
+/* Define to 1 when the gnulib module snprintf should be tested. */
+#undef GNULIB_TEST_SNPRINTF
+
+/* Define to 1 when the gnulib module socket should be tested. */
+#undef GNULIB_TEST_SOCKET
+
+/* Define to 1 when the gnulib module stat should be tested. */
+#undef GNULIB_TEST_STAT
+
+/* Define to 1 when the gnulib module stpcpy should be tested. */
+#undef GNULIB_TEST_STPCPY
+
+/* Define to 1 when the gnulib module strchrnul should be tested. */
+#undef GNULIB_TEST_STRCHRNUL
+
+/* Define to 1 when the gnulib module strdup should be tested. */
+#undef GNULIB_TEST_STRDUP
+
+/* Define to 1 when the gnulib module strerror should be tested. */
+#undef GNULIB_TEST_STRERROR
+
+/* Define to 1 when the gnulib module strerror_r should be tested. */
+#undef GNULIB_TEST_STRERROR_R
+
+/* Define to 1 when the gnulib module strndup should be tested. */
+#undef GNULIB_TEST_STRNDUP
+
+/* Define to 1 when the gnulib module strnlen should be tested. */
+#undef GNULIB_TEST_STRNLEN
+
+/* Define to 1 when the gnulib module strpbrk should be tested. */
+#undef GNULIB_TEST_STRPBRK
+
+/* Define to 1 when the gnulib module strptime should be tested. */
+#undef GNULIB_TEST_STRPTIME
+
+/* Define to 1 when the gnulib module strtok_r should be tested. */
+#undef GNULIB_TEST_STRTOK_R
+
+/* Define to 1 when the gnulib module strtoll should be tested. */
+#undef GNULIB_TEST_STRTOLL
+
+/* Define to 1 when the gnulib module symlink should be tested. */
+#undef GNULIB_TEST_SYMLINK
+
+/* Define to 1 when the gnulib module timegm should be tested. */
+#undef GNULIB_TEST_TIMEGM
+
+/* Define to 1 when the gnulib module time_r should be tested. */
+#undef GNULIB_TEST_TIME_R
+
+/* Define to 1 when the gnulib module uninorm/u8-normalize should be tested.
+ */
+#undef GNULIB_TEST_UNINORM_U8_NORMALIZE
+
+/* Define to 1 when the gnulib module unlink should be tested. */
+#undef GNULIB_TEST_UNLINK
+
+/* Define to 1 when the gnulib module utime should be tested. */
+#undef GNULIB_TEST_UTIME
+
+/* Define to 1 when the gnulib module vasprintf should be tested. */
+#undef GNULIB_TEST_VASPRINTF
+
+/* Define to 1 when the gnulib module vsnprintf should be tested. */
+#undef GNULIB_TEST_VSNPRINTF
+
+/* Define to 1 when the gnulib module waitpid should be tested. */
+#undef GNULIB_TEST_WAITPID
+
+/* Define to 1 when the gnulib module wcrtomb should be tested. */
+#undef GNULIB_TEST_WCRTOMB
+
+/* Define to 1 when the gnulib module wcwidth should be tested. */
+#undef GNULIB_TEST_WCWIDTH
+
+/* Define to 1 when the gnulib module wmemchr should be tested. */
+#undef GNULIB_TEST_WMEMCHR
+
+/* Define to 1 when the gnulib module wmempcpy should be tested. */
+#undef GNULIB_TEST_WMEMPCPY
+
+/* Define to 1 when the gnulib module write should be tested. */
+#undef GNULIB_TEST_WRITE
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module unistr/u8-mbtouc-unsafe shall be considered
+ present. */
+#undef GNULIB_UNISTR_U8_MBTOUC_UNSAFE
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module unistr/u8-uctomb shall be considered present. */
+#undef GNULIB_UNISTR_U8_UCTOMB
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module xalloc shall be considered present. */
+#undef GNULIB_XALLOC
+
+/* Define to a C preprocessor expression that evaluates to 1 or 0, depending
+ whether the gnulib module xalloc-die shall be considered present. */
+#undef GNULIB_XALLOC_DIE
+
+/* Define to 1 if you have 'alloca' after including <alloca.h>, a header that
+ may be supplied by this distribution. */
+#undef HAVE_ALLOCA
+
+/* Define to 1 if <alloca.h> works. */
+#undef HAVE_ALLOCA_H
+
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+#undef HAVE_ARPA_INET_H
+
+/* Define to 1 if you have the <bcrypt.h> header file. */
+#undef HAVE_BCRYPT_H
+
+/* Define to 1 if you have the <bp-sym.h> header file. */
+#undef HAVE_BP_SYM_H
+
+/* Define to 1 if you have the `btowc' function. */
+#undef HAVE_BTOWC
+
+/* Define to 1 if nanosleep mishandles large arguments. */
+#undef HAVE_BUG_BIG_NANOSLEEP
+
+/* Define to 1 if you have the <byteswap.h> header file. */
+#undef HAVE_BYTESWAP_H
+
+/* Define to 1 if you have the `canonicalize_file_name' function. */
+#undef HAVE_CANONICALIZE_FILE_NAME
+
+/* Define to 1 if you have the `catgets' function. */
+#undef HAVE_CATGETS
+
+/* Define to 1 if you have the Mac OS X function CFLocaleCopyCurrent in the
+ CoreFoundation framework. */
+#undef HAVE_CFLOCALECOPYCURRENT
+
+/* Define to 1 if you have the Mac OS X function CFPreferencesCopyAppValue in
+ the CoreFoundation framework. */
+#undef HAVE_CFPREFERENCESCOPYAPPVALUE
+
+/* Define to 1 if you have the `clock_gettime' function. */
+#undef HAVE_CLOCK_GETTIME
+
+/* Define to 1 if you have the `clock_settime' function. */
+#undef HAVE_CLOCK_SETTIME
+
+/* Define to 1 if you have the `closedir' function. */
+#undef HAVE_CLOSEDIR
+
+/* Define to 1 if you have the `confstr' function. */
+#undef HAVE_CONFSTR
+
+/* Define to 1 if you have the <crtdefs.h> header file. */
+#undef HAVE_CRTDEFS_H
+
+/* Define if the GNU dcgettext() function is already present or preinstalled.
+ */
+#undef HAVE_DCGETTEXT
+
+/* Define to 1 if you have the declaration of `alarm', and to 0 if you don't.
+ */
+#undef HAVE_DECL_ALARM
+
+/* Define to 1 if you have the declaration of `clearerr_unlocked', and to 0 if
+ you don't. */
+#undef HAVE_DECL_CLEARERR_UNLOCKED
+
+/* Define to 1 if you have the declaration of `dirfd', and to 0 if you don't.
+ */
+#undef HAVE_DECL_DIRFD
+
+/* Define to 1 if you have the declaration of `ecvt', and to 0 if you don't.
+ */
+#undef HAVE_DECL_ECVT
+
+/* Define to 1 if you have the declaration of `execvpe', and to 0 if you
+ don't. */
+#undef HAVE_DECL_EXECVPE
+
+/* Define to 1 if you have the declaration of `fchdir', and to 0 if you don't.
+ */
+#undef HAVE_DECL_FCHDIR
+
+/* Define to 1 if you have the declaration of `fcloseall', and to 0 if you
+ don't. */
+#undef HAVE_DECL_FCLOSEALL
+
+/* Define to 1 if you have the declaration of `fcvt', and to 0 if you don't.
+ */
+#undef HAVE_DECL_FCVT
+
+/* Define to 1 if you have the declaration of `fdopendir', and to 0 if you
+ don't. */
+#undef HAVE_DECL_FDOPENDIR
+
+/* Define to 1 if you have the declaration of `feof_unlocked', and to 0 if you
+ don't. */
+#undef HAVE_DECL_FEOF_UNLOCKED
+
+/* Define to 1 if you have the declaration of `ferror_unlocked', and to 0 if
+ you don't. */
+#undef HAVE_DECL_FERROR_UNLOCKED
+
+/* Define to 1 if you have the declaration of `fflush_unlocked', and to 0 if
+ you don't. */
+#undef HAVE_DECL_FFLUSH_UNLOCKED
+
+/* Define to 1 if you have the declaration of `fgets_unlocked', and to 0 if
+ you don't. */
+#undef HAVE_DECL_FGETS_UNLOCKED
+
+/* Define to 1 if you have the declaration of `flockfile', and to 0 if you
+ don't. */
+#undef HAVE_DECL_FLOCKFILE
+
+/* Define to 1 if you have the declaration of `fpurge', and to 0 if you don't.
+ */
+#undef HAVE_DECL_FPURGE
+
+/* Define to 1 if you have the declaration of `fputc_unlocked', and to 0 if
+ you don't. */
+#undef HAVE_DECL_FPUTC_UNLOCKED
+
+/* Define to 1 if you have the declaration of `fputs_unlocked', and to 0 if
+ you don't. */
+#undef HAVE_DECL_FPUTS_UNLOCKED
+
+/* Define to 1 if you have the declaration of `fread_unlocked', and to 0 if
+ you don't. */
+#undef HAVE_DECL_FREAD_UNLOCKED
+
+/* Define to 1 if you have the declaration of `freeaddrinfo', and to 0 if you
+ don't. */
+#undef HAVE_DECL_FREEADDRINFO
+
+/* Define to 1 if you have the declaration of `fseeko', and to 0 if you don't.
+ */
+#undef HAVE_DECL_FSEEKO
+
+/* Define to 1 if you have the declaration of `ftello', and to 0 if you don't.
+ */
+#undef HAVE_DECL_FTELLO
+
+/* Define to 1 if you have the declaration of `funlockfile', and to 0 if you
+ don't. */
+#undef HAVE_DECL_FUNLOCKFILE
+
+/* Define to 1 if you have the declaration of `fwrite_unlocked', and to 0 if
+ you don't. */
+#undef HAVE_DECL_FWRITE_UNLOCKED
+
+/* Define to 1 if you have the declaration of `gai_strerror', and to 0 if you
+ don't. */
+#undef HAVE_DECL_GAI_STRERROR
+
+/* Define to 1 if you have the declaration of `gai_strerrorA', and to 0 if you
+ don't. */
+#undef HAVE_DECL_GAI_STRERRORA
+
+/* Define to 1 if you have the declaration of `gcvt', and to 0 if you don't.
+ */
+#undef HAVE_DECL_GCVT
+
+/* Define to 1 if you have the declaration of `getaddrinfo', and to 0 if you
+ don't. */
+#undef HAVE_DECL_GETADDRINFO
+
+/* Define to 1 if you have the declaration of `getchar_unlocked', and to 0 if
+ you don't. */
+#undef HAVE_DECL_GETCHAR_UNLOCKED
+
+/* Define to 1 if you have the declaration of `getcwd', and to 0 if you don't.
+ */
+#undef HAVE_DECL_GETCWD
+
+/* Define to 1 if you have the declaration of `getc_unlocked', and to 0 if you
+ don't. */
+#undef HAVE_DECL_GETC_UNLOCKED
+
+/* Define to 1 if you have the declaration of `getdelim', and to 0 if you
+ don't. */
+#undef HAVE_DECL_GETDELIM
+
+/* Define to 1 if you have the declaration of `getdtablesize', and to 0 if you
+ don't. */
+#undef HAVE_DECL_GETDTABLESIZE
+
+/* Define to 1 if you have the declaration of `getline', and to 0 if you
+ don't. */
+#undef HAVE_DECL_GETLINE
+
+/* Define to 1 if you have the declaration of `getnameinfo', and to 0 if you
+ don't. */
+#undef HAVE_DECL_GETNAMEINFO
+
+/* Define to 1 if you have the declaration of `h_errno', and to 0 if you
+ don't. */
+#undef HAVE_DECL_H_ERRNO
+
+/* Define to 1 if you have the declaration of `inet_ntop', and to 0 if you
+ don't. */
+#undef HAVE_DECL_INET_NTOP
+
+/* Define to 1 if you have the declaration of `isblank', and to 0 if you
+ don't. */
+#undef HAVE_DECL_ISBLANK
+
+/* Define to 1 if you have the declaration of `iswblank', and to 0 if you
+ don't. */
+#undef HAVE_DECL_ISWBLANK
+
+/* Define to 1 if you have the declaration of `localtime_r', and to 0 if you
+ don't. */
+#undef HAVE_DECL_LOCALTIME_R
+
+/* Define to 1 if you have the declaration of `mbrtowc', and to 0 if you
+ don't. */
+#undef HAVE_DECL_MBRTOWC
+
+/* Define to 1 if you have the declaration of `mbsinit', and to 0 if you
+ don't. */
+#undef HAVE_DECL_MBSINIT
+
+/* Define to 1 if you have the declaration of `mbsrtowcs', and to 0 if you
+ don't. */
+#undef HAVE_DECL_MBSRTOWCS
+
+/* Define to 1 if you have the declaration of `memrchr', and to 0 if you
+ don't. */
+#undef HAVE_DECL_MEMRCHR
+
+/* Define to 1 if you have the declaration of `program_invocation_name', and
+ to 0 if you don't. */
+#undef HAVE_DECL_PROGRAM_INVOCATION_NAME
+
+/* Define to 1 if you have the declaration of `program_invocation_short_name',
+ and to 0 if you don't. */
+#undef HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME
+
+/* Define to 1 if you have the declaration of `putchar_unlocked', and to 0 if
+ you don't. */
+#undef HAVE_DECL_PUTCHAR_UNLOCKED
+
+/* Define to 1 if you have the declaration of `putc_unlocked', and to 0 if you
+ don't. */
+#undef HAVE_DECL_PUTC_UNLOCKED
+
+/* Define to 1 if you have the declaration of `snprintf', and to 0 if you
+ don't. */
+#undef HAVE_DECL_SNPRINTF
+
+/* Define to 1 if you have the declaration of `strdup', and to 0 if you don't.
+ */
+#undef HAVE_DECL_STRDUP
+
+/* Define to 1 if you have the declaration of `strerror_r', and to 0 if you
+ don't. */
+#undef HAVE_DECL_STRERROR_R
+
+/* Define to 1 if you have the declaration of `strncasecmp', and to 0 if you
+ don't. */
+#undef HAVE_DECL_STRNCASECMP
+
+/* Define to 1 if you have the declaration of `strndup', and to 0 if you
+ don't. */
+#undef HAVE_DECL_STRNDUP
+
+/* Define to 1 if you have the declaration of `strnlen', and to 0 if you
+ don't. */
+#undef HAVE_DECL_STRNLEN
+
+/* Define to 1 if you have the declaration of `strtok_r', and to 0 if you
+ don't. */
+#undef HAVE_DECL_STRTOK_R
+
+/* Define to 1 if you have the declaration of `towlower', and to 0 if you
+ don't. */
+#undef HAVE_DECL_TOWLOWER
+
+/* Define to 1 if you have the declaration of `vsnprintf', and to 0 if you
+ don't. */
+#undef HAVE_DECL_VSNPRINTF
+
+/* Define to 1 if you have the declaration of `wcrtomb', and to 0 if you
+ don't. */
+#undef HAVE_DECL_WCRTOMB
+
+/* Define to 1 if you have the declaration of `wcsdup', and to 0 if you don't.
+ */
+#undef HAVE_DECL_WCSDUP
+
+/* Define to 1 if you have the declaration of `wcwidth', and to 0 if you
+ don't. */
+#undef HAVE_DECL_WCWIDTH
+
+/* Define to 1 if you have the declaration of `_fseeki64', and to 0 if you
+ don't. */
+#undef HAVE_DECL__FSEEKI64
+
+/* Define to 1 if you have the declaration of `_snprintf', and to 0 if you
+ don't. */
+#undef HAVE_DECL__SNPRINTF
+
+/* Define to 1 if you have the declaration of `__argv', and to 0 if you don't.
+ */
+#undef HAVE_DECL___ARGV
+
+/* Define to 1 if you have the declaration of `__fsetlocking', and to 0 if you
+ don't. */
+#undef HAVE_DECL___FSETLOCKING
+
+/* Define to 1 if you have the <dirent.h> header file. */
+#undef HAVE_DIRENT_H
+
+/* Define to 1 if you have the `dirfd' function. */
+#undef HAVE_DIRFD
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#undef HAVE_DLFCN_H
+
+/* Define to 1 if you have the `drand48' function. */
+#undef HAVE_DRAND48
+
+/* Define if you have the declaration of environ. */
+#undef HAVE_ENVIRON_DECL
+
+/* Define to 1 if you have the `faccessat' function. */
+#undef HAVE_FACCESSAT
+
+/* Define to 1 if you have the `fchdir' function. */
+#undef HAVE_FCHDIR
+
+/* Define to 1 if you have the `fcntl' function. */
+#undef HAVE_FCNTL
+
+/* Define to 1 if you have the `fdopendir' function. */
+#undef HAVE_FDOPENDIR
+
+/* Define to 1 if you have the <features.h> header file. */
+#undef HAVE_FEATURES_H
+
+/* Define to 1 if you have the `flock' function. */
+#undef HAVE_FLOCK
+
+/* Define to 1 if you have the `flockfile' function. */
+#undef HAVE_FLOCKFILE
+
+/* Define to 1 if you have the `fmemopen' function. */
+#undef HAVE_FMEMOPEN
+
+/* Define to 1 if you have the `fnmatch' function. */
+#undef HAVE_FNMATCH
+
+/* Define to 1 if you have the <fnmatch.h> header file. */
+#undef HAVE_FNMATCH_H
+
+/* Define to 1 if you have the `fpurge' function. */
+#undef HAVE_FPURGE
+
+/* Define to 1 if fseeko (and presumably ftello) exists and is declared. */
+#undef HAVE_FSEEKO
+
+/* Define to 1 if you have the `fstatat' function. */
+#undef HAVE_FSTATAT
+
+/* Define to 1 if you have the `ftello' function. */
+#undef HAVE_FTELLO
+
+/* Define to 1 if you have the `funlockfile' function. */
+#undef HAVE_FUNLOCKFILE
+
+/* Define to 1 if you have the `futimens' function. */
+#undef HAVE_FUTIMENS
+
+/* Define to 1 if you have the `futimes' function. */
+#undef HAVE_FUTIMES
+
+/* Define to 1 if you have the `futimesat' function. */
+#undef HAVE_FUTIMESAT
+
+/* Define to 1 if getaddrinfo exists, or to 0 otherwise. */
+#undef HAVE_GETADDRINFO
+
+/* Define to 1 if getcwd works, but with shorter paths than is generally
+ tested with the replacement. */
+#undef HAVE_GETCWD_SHORTER
+
+/* Define to 1 if you have the `getdelim' function. */
+#undef HAVE_GETDELIM
+
+/* Define to 1 if you have the `getdtablesize' function. */
+#undef HAVE_GETDTABLESIZE
+
+/* Define to 1 if you have the `getegid' function. */
+#undef HAVE_GETEGID
+
+/* Define to 1 if you have the `geteuid' function. */
+#undef HAVE_GETEUID
+
+/* Define to 1 if you have the `getexecname' function. */
+#undef HAVE_GETEXECNAME
+
+/* Define to 1 if you have the `getgid' function. */
+#undef HAVE_GETGID
+
+/* Define to 1 if your system has a working `getgroups' function. */
+#undef HAVE_GETGROUPS
+
+/* Define to 1 if you have the `gethostbyname' function. */
+#undef HAVE_GETHOSTBYNAME
+
+/* Define to 1 if you have the <getopt.h> header file. */
+#undef HAVE_GETOPT_H
+
+/* Define to 1 if you have the `getopt_long_only' function. */
+#undef HAVE_GETOPT_LONG_ONLY
+
+/* Define to 1 if you have the `getpagesize' function. */
+#undef HAVE_GETPAGESIZE
+
+/* Define to 1 if you have the `getpass' function. */
+#undef HAVE_GETPASS
+
+/* Define to 1 if you have the `getprogname' function. */
+#undef HAVE_GETPROGNAME
+
+/* Define to 1 if you have the `getrandom' function. */
+#undef HAVE_GETRANDOM
+
+/* Define to 1 if you have the `getservbyname' function. */
+#undef HAVE_GETSERVBYNAME
+
+/* Define if the GNU gettext() function is already present or preinstalled. */
+#undef HAVE_GETTEXT
+
+/* Define to 1 if you have the `gettimeofday' function. */
+#undef HAVE_GETTIMEOFDAY
+
+/* Define to 1 if you have the `getuid' function. */
+#undef HAVE_GETUID
+
+/* Define to 1 if you have the `gnutls_priority_set_direct' function. */
+#undef HAVE_GNUTLS_PRIORITY_SET_DIRECT
+
+/* Define if GPGME is available. */
+#undef HAVE_GPGME
+
+/* Define if you have the iconv() function and it works. */
+#undef HAVE_ICONV
+
+/* Define to 1 if you have the <iconv.h> header file. */
+#undef HAVE_ICONV_H
+
+/* Define to 1 if you have the `inet_ntop' function. */
+#undef HAVE_INET_NTOP
+
+/* Define to 1 if the compiler supports one of the keywords 'inline',
+ '__inline__', '__inline' and effectively inlines functions marked as such.
+ */
+#undef HAVE_INLINE
+
+/* Define to 1 if the system has the type `int64_t'. */
+#undef HAVE_INT64_T
+
+/* Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>. */
+#undef HAVE_INTMAX_T
+
+/* Define to 1 if the system has the type `intptr_t'. */
+#undef HAVE_INTPTR_T
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#undef HAVE_INTTYPES_H
+
+/* Define if <inttypes.h> exists, doesn't clash with <sys/types.h>, and
+ declares uintmax_t. */
+#undef HAVE_INTTYPES_H_WITH_UINTMAX
+
+/* Define to 1 if you have the `ioctl' function. */
+#undef HAVE_IOCTL
+
+/* Define to 1 if <sys/socket.h> defines AF_INET. */
+#undef HAVE_IPV4
+
+/* Define to 1 if <sys/socket.h> defines AF_INET6. */
+#undef HAVE_IPV6
+
+/* Define to 1 if you have the `isatty' function. */
+#undef HAVE_ISATTY
+
+/* Define to 1 if you have the `isblank' function. */
+#undef HAVE_ISBLANK
+
+/* Define to 1 if you have the `issetugid' function. */
+#undef HAVE_ISSETUGID
+
+/* Define to 1 if you have the `iswblank' function. */
+#undef HAVE_ISWBLANK
+
+/* Define to 1 if you have the `iswcntrl' function. */
+#undef HAVE_ISWCNTRL
+
+/* Define to 1 if you have the `iswctype' function. */
+#undef HAVE_ISWCTYPE
+
+/* Define if you have <langinfo.h> and nl_langinfo(CODESET). */
+#undef HAVE_LANGINFO_CODESET
+
+/* Define to 1 if you have the <langinfo.h> header file. */
+#undef HAVE_LANGINFO_H
+
+/* Define if libcares is available. */
+#undef HAVE_LIBCARES
+
+/* Define to 1 if you have the `dl' library (-ldl). */
+#undef HAVE_LIBDL
+
+/* Define to 1 if you have the `eay32' library (-leay32). */
+#undef HAVE_LIBEAY32
+
+/* Define if you have the libgnutls library. */
+#undef HAVE_LIBGNUTLS
+
+/* Define to 1 if you have the <libintl.h> header file. */
+#undef HAVE_LIBINTL_H
+
+/* Define if libpcre is available. */
+#undef HAVE_LIBPCRE
+
+/* Define if libpcre2 is available. */
+#undef HAVE_LIBPCRE2
+
+/* PSL support enabled */
+#undef HAVE_LIBPSL
+
+/* Define if you have the libssl library. */
+#undef HAVE_LIBSSL
+
+/* Define to 1 if you have the `ssl32' library (-lssl32). */
+#undef HAVE_LIBSSL32
+
+/* Define if you have the libunistring library. */
+#undef HAVE_LIBUNISTRING
+
+/* Define if using libuuid. */
+#undef HAVE_LIBUUID
+
+/* Define if using zlib. */
+#undef HAVE_LIBZ
+
+/* Define to 1 if the bcrypt library is guaranteed to be present. */
+#undef HAVE_LIB_BCRYPT
+
+/* Define to 1 if you have the <limits.h> header file. */
+#undef HAVE_LIMITS_H
+
+/* Define to 1 if you have the `link' function. */
+#undef HAVE_LINK
+
+/* Define to 1 if you have 'struct sockaddr_alg' defined. */
+#undef HAVE_LINUX_IF_ALG_H
+
+/* Define to 1 if you have the `localtime_r' function. */
+#undef HAVE_LOCALTIME_R
+
+/* Define to 1 if the system has the type 'long long int'. */
+#undef HAVE_LONG_LONG_INT
+
+/* Define to 1 if you have the `lstat' function. */
+#undef HAVE_LSTAT
+
+/* Define to 1 if you have the `lutimes' function. */
+#undef HAVE_LUTIMES
+
+/* Define to 1 if you have the <malloc.h> header file. */
+#undef HAVE_MALLOC_H
+
+/* Define if the 'malloc' function is POSIX compliant. */
+#undef HAVE_MALLOC_POSIX
+
+/* Define to 1 if mmap()'s MAP_ANONYMOUS flag is available after including
+ config.h and <sys/mman.h>. */
+#undef HAVE_MAP_ANONYMOUS
+
+/* Define to 1 if you have the `mbrtowc' function. */
+#undef HAVE_MBRTOWC
+
+/* Define to 1 if you have the `mbsinit' function. */
+#undef HAVE_MBSINIT
+
+/* Define to 1 if you have the `mbsrtowcs' function. */
+#undef HAVE_MBSRTOWCS
+
+/* Define to 1 if <wchar.h> declares mbstate_t. */
+#undef HAVE_MBSTATE_T
+
+/* Define to 1 if you have the `mbtowc' function. */
+#undef HAVE_MBTOWC
+
+/* Define to 1 if you have the `mempcpy' function. */
+#undef HAVE_MEMPCPY
+
+/* Define to 1 if you have the `memrchr' function. */
+#undef HAVE_MEMRCHR
+
+/* Define if using metalink. */
+#undef HAVE_METALINK
+
+/* Define to 1 if getcwd minimally works, that is, its result can be trusted
+ when it succeeds. */
+#undef HAVE_MINIMALLY_WORKING_GETCWD
+
+/* Define to 1 if you have the <minix/config.h> header file. */
+#undef HAVE_MINIX_CONFIG_H
+
+/* Define to 1 if <limits.h> defines the MIN and MAX macros. */
+#undef HAVE_MINMAX_IN_LIMITS_H
+
+/* Define to 1 if <sys/param.h> defines the MIN and MAX macros. */
+#undef HAVE_MINMAX_IN_SYS_PARAM_H
+
+/* Define to 1 if you have the `mkostemp' function. */
+#undef HAVE_MKOSTEMP
+
+/* Define to 1 if you have the `mkstemp' function. */
+#undef HAVE_MKSTEMP
+
+/* Define to 1 if you have a working `mmap' system call. */
+#undef HAVE_MMAP
+
+/* Define to 1 if you have the `mprotect' function. */
+#undef HAVE_MPROTECT
+
+/* Define to 1 on MSVC platforms that have the "invalid parameter handler"
+ concept. */
+#undef HAVE_MSVC_INVALID_PARAMETER_HANDLER
+
+/* Define to 1 if you have the <netdb.h> header file. */
+#undef HAVE_NETDB_H
+
+/* Define to 1 if you have the <netinet/in.h> header file. */
+#undef HAVE_NETINET_IN_H
+
+/* Use libnettle */
+#undef HAVE_NETTLE
+
+/* Define to 1 if you have the `nl_langinfo' function. */
+#undef HAVE_NL_LANGINFO
+
+/* Define to 1 if you have the `openat' function. */
+#undef HAVE_OPENAT
+
+/* Define to 1 if you have the `opendir' function. */
+#undef HAVE_OPENDIR
+
+/* Define to 1 if libcrypto is used for MD5. */
+#undef HAVE_OPENSSL_MD5
+
+/* Define to 1 if you have the <openssl/md5.h> header file. */
+#undef HAVE_OPENSSL_MD5_H
+
+/* Define to 1 if libcrypto is used for SHA1. */
+#undef HAVE_OPENSSL_SHA1
+
+/* Define to 1 if libcrypto is used for SHA256. */
+#undef HAVE_OPENSSL_SHA256
+
+/* Define to 1 if libcrypto is used for SHA512. */
+#undef HAVE_OPENSSL_SHA512
+
+/* Define to 1 if you have the <openssl/sha.h> header file. */
+#undef HAVE_OPENSSL_SHA_H
+
+/* Define to 1 if getcwd works, except it sometimes fails when it shouldn't,
+ setting errno to ERANGE, ENAMETOOLONG, or ENOENT. */
+#undef HAVE_PARTLY_WORKING_GETCWD
+
+/* Define to 1 if you have the `pathconf' function. */
+#undef HAVE_PATHCONF
+
+/* Define to 1 if you have the <paths.h> header file. */
+#undef HAVE_PATHS_H
+
+/* Define to 1 if you have the `pipe' function. */
+#undef HAVE_PIPE
+
+/* Define to 1 if you have the `pipe2' function. */
+#undef HAVE_PIPE2
+
+/* Define to 1 if you have the `posix_spawn' function. */
+#undef HAVE_POSIX_SPAWN
+
+/* Define to 1 if the system has the type `posix_spawnattr_t'. */
+#undef HAVE_POSIX_SPAWNATTR_T
+
+/* Define to 1 if you have the `posix_spawn_file_actions_addchdir' function.
+ */
+#undef HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR
+
+/* Define to 1 if you have the `posix_spawn_file_actions_addchdir_np'
+ function. */
+#undef HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR_NP
+
+/* Define to 1 if the system has the type `posix_spawn_file_actions_t'. */
+#undef HAVE_POSIX_SPAWN_FILE_ACTIONS_T
+
+/* Define to 1 if you have the `psl_latest' function. */
+#undef HAVE_PSL_LATEST
+
+/* Define if you have the <pthread.h> header and the POSIX threads API. */
+#undef HAVE_PTHREAD_API
+
+/* Define if the <pthread.h> defines PTHREAD_MUTEX_RECURSIVE. */
+#undef HAVE_PTHREAD_MUTEX_RECURSIVE
+
+/* Define if the POSIX multithreading library has read/write locks. */
+#undef HAVE_PTHREAD_RWLOCK
+
+/* Define if the 'pthread_rwlock_rdlock' function prefers a writer to a
+ reader. */
+#undef HAVE_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER
+
+/* Define to 1 if you have the <pwd.h> header file. */
+#undef HAVE_PWD_H
+
+/* Define to 1 if you have the `raise' function. */
+#undef HAVE_RAISE
+
+/* Define to 1 if you have the `random' function. */
+#undef HAVE_RANDOM
+
+/* Define to 1 if you have the `RAND_egd' function. */
+#undef HAVE_RAND_EGD
+
+/* Define to 1 if you have the `rawmemchr' function. */
+#undef HAVE_RAWMEMCHR
+
+/* Define to 1 if you have the `readdir' function. */
+#undef HAVE_READDIR
+
+/* Define to 1 if you have the `readlink' function. */
+#undef HAVE_READLINK
+
+/* Define if the 'realloc' function is POSIX compliant. */
+#undef HAVE_REALLOC_POSIX
+
+/* Define to 1 if you have the `realpath' function. */
+#undef HAVE_REALPATH
+
+/* Define to 1 if you have the `rewinddir' function. */
+#undef HAVE_REWINDDIR
+
+/* Define to 1 if the system has the type `sa_family_t'. */
+#undef HAVE_SA_FAMILY_T
+
+/* Define to 1 if you have the <sched.h> header file. */
+#undef HAVE_SCHED_H
+
+/* Define to 1 if you have the `sched_setparam' function. */
+#undef HAVE_SCHED_SETPARAM
+
+/* Define to 1 if you have the `sched_setscheduler' function. */
+#undef HAVE_SCHED_SETSCHEDULER
+
+/* Define to 1 if you have the <sdkddkver.h> header file. */
+#undef HAVE_SDKDDKVER_H
+
+/* Define to 1 if you have the `secure_getenv' function. */
+#undef HAVE_SECURE_GETENV
+
+/* Define to 1 if you have the `setdtablesize' function. */
+#undef HAVE_SETDTABLESIZE
+
+/* Define to 1 if you have the `setegid' function. */
+#undef HAVE_SETEGID
+
+/* Define to 1 if you have the `seteuid' function. */
+#undef HAVE_SETEUID
+
+/* Define to 1 if you have the `shutdown' function. */
+#undef HAVE_SHUTDOWN
+
+/* Define to 1 if you have the `sigaction' function. */
+#undef HAVE_SIGACTION
+
+/* Define to 1 if you have the `sigaltstack' function. */
+#undef HAVE_SIGALTSTACK
+
+/* Define to 1 if you have the `sigblock' function. */
+#undef HAVE_SIGBLOCK
+
+/* Define to 1 if the system has the type `siginfo_t'. */
+#undef HAVE_SIGINFO_T
+
+/* Define to 1 if you have the `siginterrupt' function. */
+#undef HAVE_SIGINTERRUPT
+
+/* Define to 1 if 'sig_atomic_t' is a signed integer type. */
+#undef HAVE_SIGNED_SIG_ATOMIC_T
+
+/* Define to 1 if 'wchar_t' is a signed integer type. */
+#undef HAVE_SIGNED_WCHAR_T
+
+/* Define to 1 if 'wint_t' is a signed integer type. */
+#undef HAVE_SIGNED_WINT_T
+
+/* Define to 1 if you have the `sigsetjmp' function. */
+#undef HAVE_SIGSETJMP
+
+/* Define to 1 if the system has the type `sigset_t'. */
+#undef HAVE_SIGSET_T
+
+/* Define to 1 if the system has the type `sig_atomic_t'. */
+#undef HAVE_SIG_ATOMIC_T
+
+/* Define to 1 if you have the `sleep' function. */
+#undef HAVE_SLEEP
+
+/* Define to 1 if you have the `snprintf' function. */
+#undef HAVE_SNPRINTF
+
+/* Define if the return value of the snprintf function is the number of of
+ bytes (excluding the terminating NUL) that would have been produced if the
+ buffer had been large enough. */
+#undef HAVE_SNPRINTF_RETVAL_C99
+
+/* Define if the string produced by the snprintf function is always NUL
+ terminated. */
+#undef HAVE_SNPRINTF_TRUNCATION_C99
+
+/* Define if struct sockaddr_in6 has the sin6_scope_id member */
+#undef HAVE_SOCKADDR_IN6_SCOPE_ID
+
+/* Define to 1 if you have the <spawn.h> header file. */
+#undef HAVE_SPAWN_H
+
+/* Define to 1 if stdbool.h conforms to C99. */
+#undef HAVE_STDBOOL_H
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#undef HAVE_STDINT_H
+
+/* Define if <stdint.h> exists, doesn't clash with <sys/types.h>, and declares
+ uintmax_t. */
+#undef HAVE_STDINT_H_WITH_UINTMAX
+
+/* Define to 1 if you have the <stdio_ext.h> header file. */
+#undef HAVE_STDIO_EXT_H
+
+/* Define to 1 if you have the <stdio.h> header file. */
+#undef HAVE_STDIO_H
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#undef HAVE_STDLIB_H
+
+/* Define to 1 if you have the `stpcpy' function. */
+#undef HAVE_STPCPY
+
+/* Define to 1 if you have the `strcasecmp' function. */
+#undef HAVE_STRCASECMP
+
+/* Define to 1 if you have the `strchrnul' function. */
+#undef HAVE_STRCHRNUL
+
+/* Define to 1 if you have the `strdup' function. */
+#undef HAVE_STRDUP
+
+/* Define to 1 if you have the `strerror_r' function. */
+#undef HAVE_STRERROR_R
+
+/* Define to 1 if you have the <strings.h> header file. */
+#undef HAVE_STRINGS_H
+
+/* Define to 1 if you have the <string.h> header file. */
+#undef HAVE_STRING_H
+
+/* Define to 1 if you have the `strlcpy' function. */
+#undef HAVE_STRLCPY
+
+/* Define to 1 if you have the `strncasecmp' function. */
+#undef HAVE_STRNCASECMP
+
+/* Define to 1 if you have the `strndup' function. */
+#undef HAVE_STRNDUP
+
+/* Define to 1 if you have the `strnlen' function. */
+#undef HAVE_STRNLEN
+
+/* Define to 1 if you have the `strpbrk' function. */
+#undef HAVE_STRPBRK
+
+/* Define to 1 if you have the `strptime' function. */
+#undef HAVE_STRPTIME
+
+/* Define to 1 if you have the `strtok_r' function. */
+#undef HAVE_STRTOK_R
+
+/* Define to 1 if you have the `strtol' function. */
+#undef HAVE_STRTOL
+
+/* Define to 1 if you have the `strtoll' function. */
+#undef HAVE_STRTOLL
+
+/* Define to 1 if the system has the type `struct addrinfo'. */
+#undef HAVE_STRUCT_ADDRINFO
+
+/* Define to 1 if `l_type' is a member of `struct flock'. */
+#undef HAVE_STRUCT_FLOCK_L_TYPE
+
+/* Define to 1 if `decimal_point' is a member of `struct lconv'. */
+#undef HAVE_STRUCT_LCONV_DECIMAL_POINT
+
+/* Define to 1 if `sa_sigaction' is a member of `struct sigaction'. */
+#undef HAVE_STRUCT_SIGACTION_SA_SIGACTION
+
+/* Define to 1 if the system has the type `struct sockaddr_in6'. */
+#undef HAVE_STRUCT_SOCKADDR_IN6
+
+/* Define to 1 if `sa_len' is a member of `struct sockaddr'. */
+#undef HAVE_STRUCT_SOCKADDR_SA_LEN
+
+/* Define to 1 if the system has the type `struct sockaddr_storage'. */
+#undef HAVE_STRUCT_SOCKADDR_STORAGE
+
+/* Define to 1 if `ss_family' is a member of `struct sockaddr_storage'. */
+#undef HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY
+
+/* Define to 1 if `st_atimensec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_ATIMENSEC
+
+/* Define to 1 if `st_atimespec.tv_nsec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC
+
+/* Define to 1 if `st_atim.st__tim.tv_nsec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_ATIM_ST__TIM_TV_NSEC
+
+/* Define to 1 if `st_atim.tv_nsec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC
+
+/* Define to 1 if `st_birthtimensec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC
+
+/* Define to 1 if `st_birthtimespec.tv_nsec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC
+
+/* Define to 1 if `st_birthtim.tv_nsec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_BIRTHTIM_TV_NSEC
+
+/* Define to 1 if you have the `symlink' function. */
+#undef HAVE_SYMLINK
+
+/* Define to 1 if you have the <sys/bitypes.h> header file. */
+#undef HAVE_SYS_BITYPES_H
+
+/* Define to 1 if you have the <sys/cdefs.h> header file. */
+#undef HAVE_SYS_CDEFS_H
+
+/* Define to 1 if you have the <sys/file.h> header file. */
+#undef HAVE_SYS_FILE_H
+
+/* Define to 1 if you have the <sys/inttypes.h> header file. */
+#undef HAVE_SYS_INTTYPES_H
+
+/* Define to 1 if you have the <sys/ioctl.h> header file. */
+#undef HAVE_SYS_IOCTL_H
+
+/* Define to 1 if you have the <sys/mman.h> header file. */
+#undef HAVE_SYS_MMAN_H
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#undef HAVE_SYS_PARAM_H
+
+/* Define to 1 if you have the <sys/random.h> header file. */
+#undef HAVE_SYS_RANDOM_H
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#undef HAVE_SYS_SELECT_H
+
+/* Define to 1 if you have the <sys/single_threaded.h> header file. */
+#undef HAVE_SYS_SINGLE_THREADED_H
+
+/* Define to 1 if you have the <sys/socket.h> header file. */
+#undef HAVE_SYS_SOCKET_H
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#undef HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#undef HAVE_SYS_TIME_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#undef HAVE_SYS_TYPES_H
+
+/* Define to 1 if you have the <sys/uio.h> header file. */
+#undef HAVE_SYS_UIO_H
+
+/* Define to 1 if you have the <sys/utime.h> header file. */
+#undef HAVE_SYS_UTIME_H
+
+/* Define to 1 if you have the <sys/wait.h> header file. */
+#undef HAVE_SYS_WAIT_H
+
+/* Define to 1 if the system has the 'tcgetattr' function. */
+#undef HAVE_TCGETATTR
+
+/* Define to 1 if the system has the 'tcsetattr' function. */
+#undef HAVE_TCSETATTR
+
+/* Define to 1 if you have the <termios.h> header file. */
+#undef HAVE_TERMIOS_H
+
+/* Define to 1 if you have the `thrd_create' function. */
+#undef HAVE_THRD_CREATE
+
+/* Define to 1 if you have the <threads.h> header file. */
+#undef HAVE_THREADS_H
+
+/* Define to 1 if you have the `timegm' function. */
+#undef HAVE_TIMEGM
+
+/* Define if struct tm has the tm_gmtoff member. */
+#undef HAVE_TM_GMTOFF
+
+/* Define to 1 if you have the `towlower' function. */
+#undef HAVE_TOWLOWER
+
+/* Define to 1 if the system has the type `uint32_t'. */
+#undef HAVE_UINT32_T
+
+/* Define to 1 if the system has the type `uintptr_t'. */
+#undef HAVE_UINTPTR_T
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#undef HAVE_UNISTD_H
+
+/* Define to 1 if the system has the type 'unsigned long long int'. */
+#undef HAVE_UNSIGNED_LONG_LONG_INT
+
+/* Define to 1 if you have the `usleep' function. */
+#undef HAVE_USLEEP
+
+/* Define to 1 if you have the `utime' function. */
+#undef HAVE_UTIME
+
+/* Define to 1 if you have the `utimensat' function. */
+#undef HAVE_UTIMENSAT
+
+/* Define to 1 if you have the <utime.h> header file. */
+#undef HAVE_UTIME_H
+
+/* Define if uuid_create is available. */
+#undef HAVE_UUID_CREATE
+
+/* Define if you have a global __progname variable */
+#undef HAVE_VAR___PROGNAME
+
+/* Define to 1 if you have the `vasnprintf' function. */
+#undef HAVE_VASNPRINTF
+
+/* Define to 1 if you have the `vasprintf' function. */
+#undef HAVE_VASPRINTF
+
+/* Define to 1 if you have the `vfork' function. */
+#undef HAVE_VFORK
+
+/* Define to 1 or 0, depending whether the compiler supports simple visibility
+ declarations. */
+#undef HAVE_VISIBILITY
+
+/* Define to 1 if you have the `vsnprintf' function. */
+#undef HAVE_VSNPRINTF
+
+/* Define to 1 if you have the `waitid' function. */
+#undef HAVE_WAITID
+
+/* Define to 1 if you have the <wchar.h> header file. */
+#undef HAVE_WCHAR_H
+
+/* Define if you have the 'wchar_t' type. */
+#undef HAVE_WCHAR_T
+
+/* Define to 1 if you have the `wcrtomb' function. */
+#undef HAVE_WCRTOMB
+
+/* Define to 1 if you have the `wcslen' function. */
+#undef HAVE_WCSLEN
+
+/* Define to 1 if you have the `wcsnlen' function. */
+#undef HAVE_WCSNLEN
+
+/* Define to 1 if you have the <wctype.h> header file. */
+#undef HAVE_WCTYPE_H
+
+/* Define to 1 if you have the `wcwidth' function. */
+#undef HAVE_WCWIDTH
+
+/* Define to 1 if the compiler and linker support weak declarations of
+ symbols. */
+#undef HAVE_WEAK_SYMBOLS
+
+/* Define to 1 if you have the <winsock2.h> header file. */
+#undef HAVE_WINSOCK2_H
+
+/* Define if you have the 'wint_t' type. */
+#undef HAVE_WINT_T
+
+/* Define to 1 if you have the `wmempcpy' function. */
+#undef HAVE_WMEMPCPY
+
+/* Define to 1 if fstatat (..., 0) works. For example, it does not work in AIX
+ 7.1. */
+#undef HAVE_WORKING_FSTATAT_ZERO_FLAG
+
+/* Define to 1 if O_NOATIME works. */
+#undef HAVE_WORKING_O_NOATIME
+
+/* Define to 1 if O_NOFOLLOW works. */
+#undef HAVE_WORKING_O_NOFOLLOW
+
+/* Define if utimes works properly. */
+#undef HAVE_WORKING_UTIMES
+
+/* Define to 1 if you have the <ws2tcpip.h> header file. */
+#undef HAVE_WS2TCPIP_H
+
+/* Define to 1 if you have the <xlocale.h> header file. */
+#undef HAVE_XLOCALE_H
+
+/* Define to 1 if the system has the type `_Bool'. */
+#undef HAVE__BOOL
+
+/* Define to 1 if you have the `_fseeki64' function. */
+#undef HAVE__FSEEKI64
+
+/* Define to 1 if you have the `_ftelli64' function. */
+#undef HAVE__FTELLI64
+
+/* Define to 1 if you have the `_set_invalid_parameter_handler' function. */
+#undef HAVE__SET_INVALID_PARAMETER_HANDLER
+
+/* Define to 1 if the compiler supports __builtin_expect,
+ and to 2 if <builtins.h> does. */
+#undef HAVE___BUILTIN_EXPECT
+#ifndef HAVE___BUILTIN_EXPECT
+# define __builtin_expect(e, c) (e)
+#elif HAVE___BUILTIN_EXPECT == 2
+# include <builtins.h>
+#endif
+
+
+/* Define to 1 if you have the `__fpurge' function. */
+#undef HAVE___FPURGE
+
+/* Define to 1 if you have the `__freading' function. */
+#undef HAVE___FREADING
+
+/* Define to 1 if you have the `__fsetlocking' function. */
+#undef HAVE___FSETLOCKING
+
+/* Define to 1 if the compiler supports the keyword '__inline'. */
+#undef HAVE___INLINE
+
+/* Define to 1 if you have the `__secure_getenv' function. */
+#undef HAVE___SECURE_GETENV
+
+/* Define to 1 if you have the `__xpg_strerror_r' function. */
+#undef HAVE___XPG_STRERROR_R
+
+/* Define as const if the declaration of iconv() needs const. */
+#undef ICONV_CONST
+
+/* Define to 1 if lseek does not detect pipes. */
+#undef LSEEK_PIPE_BROKEN
+
+/* Define to 1 if 'lstat' dereferences a symlink specified with a trailing
+ slash. */
+#undef LSTAT_FOLLOWS_SLASHED_SYMLINK
+
+/* If malloc(0) is != NULL, define this to 1. Otherwise define this to 0. */
+#undef MALLOC_0_IS_NONNULL
+
+/* Define to a substitute value for mmap()'s MAP_ANONYMOUS flag. */
+#undef MAP_ANONYMOUS
+
+/* Define if the mbrtowc function does not return (size_t) -2 for empty input.
+ */
+#undef MBRTOWC_EMPTY_INPUT_BUG
+
+/* Define if the mbrtowc function may signal encoding errors in the C locale.
+ */
+#undef MBRTOWC_IN_C_LOCALE_MAYBE_EILSEQ
+
+/* Define if the mbrtowc function has the NULL pwc argument bug. */
+#undef MBRTOWC_NULL_ARG1_BUG
+
+/* Define if the mbrtowc function has the NULL string argument bug. */
+#undef MBRTOWC_NULL_ARG2_BUG
+
+/* Define if the mbrtowc function does not return 0 for a NUL character. */
+#undef MBRTOWC_NUL_RETVAL_BUG
+
+/* Define if the mbrtowc function returns a wrong return value. */
+#undef MBRTOWC_RETVAL_BUG
+
+/* Define if the mbrtowc function stores a wide character when reporting
+ incomplete input. */
+#undef MBRTOWC_STORES_INCOMPLETE_BUG
+
+/* Use GNU style printf and scanf. */
+#ifndef __USE_MINGW_ANSI_STDIO
+# undef __USE_MINGW_ANSI_STDIO
+#endif
+
+
+/* Define if the compilation of mktime.c should define 'mktime_internal'. */
+#undef NEED_MKTIME_INTERNAL
+
+/* Define if the compilation of mktime.c should define 'mktime' with the
+ native Windows TZ workaround. */
+#undef NEED_MKTIME_WINDOWS
+
+/* Define if the compilation of mktime.c should define 'mktime' with the
+ algorithmic workarounds. */
+#undef NEED_MKTIME_WORKING
+
+/* Define to 1 if nl_langinfo is multithread-safe. */
+#undef NL_LANGINFO_MTSAFE
+
+/* Define to 1 if open() fails to recognize a trailing slash. */
+#undef OPEN_TRAILING_SLASH_BUG
+
+/* Define to be the name of the operating system. */
+#undef OS_TYPE
+
+/* Name of package */
+#undef PACKAGE
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* Define to the type that is the result of default argument promotions of
+ type mode_t. */
+#undef PROMOTED_MODE_T
+
+/* Define if the pthread_in_use() detection is hard. */
+#undef PTHREAD_IN_USE_DETECTION_HARD
+
+/* Define to l, ll, u, ul, ull, etc., as suitable for constants of type
+ 'ptrdiff_t'. */
+#undef PTRDIFF_T_SUFFIX
+
+/* Define to 1 if readlink fails to recognize a trailing slash. */
+#undef READLINK_TRAILING_SLASH_BUG
+
+/* Define to 1 if readlink sets errno instead of truncating a too-long link.
+ */
+#undef READLINK_TRUNCATE_BUG
+
+/* Define to 1 if gnulib's dirfd() replacement is used. */
+#undef REPLACE_DIRFD
+
+/* Define to 1 if gnulib's fchdir() replacement is used. */
+#undef REPLACE_FCHDIR
+
+/* Define to 1 if stat needs help when passed a file name with a trailing
+ slash */
+#undef REPLACE_FUNC_STAT_FILE
+
+/* Define to 1 if utime needs help when passed a file name with a trailing
+ slash */
+#undef REPLACE_FUNC_UTIME_FILE
+
+/* Define if nl_langinfo exists but is overridden by gnulib. */
+#undef REPLACE_NL_LANGINFO
+
+/* Define to 1 if open() should work around the inability to open a directory.
+ */
+#undef REPLACE_OPEN_DIRECTORY
+
+/* Define if gnulib uses its own posix_spawn and posix_spawnp functions. */
+#undef REPLACE_POSIX_SPAWN
+
+/* Define to 1 if strerror(0) does not return a message implying success. */
+#undef REPLACE_STRERROR_0
+
+/* Define if vasnprintf exists but is overridden by gnulib. */
+#undef REPLACE_VASNPRINTF
+
+/* Define to 1 if setlocale (LC_ALL, NULL) is multithread-safe. */
+#undef SETLOCALE_NULL_ALL_MTSAFE
+
+/* Define to 1 if setlocale (category, NULL) is multithread-safe. */
+#undef SETLOCALE_NULL_ONE_MTSAFE
+
+/* File name of the Bourne shell. */
+#if (defined _WIN32 && !defined __CYGWIN__) || defined __CYGWIN__ || defined __ANDROID__
+/* Omit the directory part because
+ - For native Windows programs in a Cygwin environment, the Cygwin mounts
+ are not visible.
+ - For 32-bit Cygwin programs in a 64-bit Cygwin environment, the Cygwin
+ mounts are not visible.
+ - On Android, /bin/sh does not exist. It's /system/bin/sh instead. */
+# define BOURNE_SHELL "sh"
+#else
+# define BOURNE_SHELL "/bin/sh"
+#endif
+
+/* Define to l, ll, u, ul, ull, etc., as suitable for constants of type
+ 'sig_atomic_t'. */
+#undef SIG_ATOMIC_T_SUFFIX
+
+/* The size of `long', as computed by sizeof. */
+#undef SIZEOF_LONG
+
+/* The size of `off_t', as computed by sizeof. */
+#undef SIZEOF_OFF_T
+
+/* Define as the maximum value of type 'size_t', if the system doesn't define
+ it. */
+#ifndef SIZE_MAX
+# undef SIZE_MAX
+#endif
+
+/* Define to l, ll, u, ul, ull, etc., as suitable for constants of type
+ 'size_t'. */
+#undef SIZE_T_SUFFIX
+
+/* If using the C implementation of alloca, define if you know the
+ direction of stack growth for your system; otherwise it will be
+ automatically deduced at runtime.
+ STACK_DIRECTION > 0 => grows toward higher addresses
+ STACK_DIRECTION < 0 => grows toward lower addresses
+ STACK_DIRECTION = 0 => direction of growth unknown */
+#undef STACK_DIRECTION
+
+/* Define to 1 if the `S_IS*' macros in <sys/stat.h> do not work properly. */
+#undef STAT_MACROS_BROKEN
+
+/* Define to 1 if all of the C90 standard headers exist (not just the ones
+ required in a freestanding environment). This macro is provided for
+ backward compatibility; new code need not use it. */
+#undef STDC_HEADERS
+
+/* Define to 1 if strerror_r returns char *. */
+#undef STRERROR_R_CHAR_P
+
+/* Define to 1 if time_t is signed. */
+#undef TIME_T_IS_SIGNED
+
+/* Define to 1 if the type of the st_atim member of a struct stat is struct
+ timespec. */
+#undef TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC
+
+/* Define to 1 if unlink() on a parent directory may succeed */
+#undef UNLINK_PARENT_BUG
+
+/* Define to the prefix of C symbols at the assembler and linker level, either
+ an underscore or empty. */
+#undef USER_LABEL_PREFIX
+
+/* Define if the combination of the ISO C and POSIX multithreading APIs can be
+ used. */
+#undef USE_ISOC_AND_POSIX_THREADS
+
+/* Define if the ISO C multithreading library can be used. */
+#undef USE_ISOC_THREADS
+
+/* Define to 1 if you want to use the Linux kernel cryptographic API. */
+#undef USE_LINUX_CRYPTO_API
+
+/* Define if the POSIX multithreading library can be used. */
+#undef USE_POSIX_THREADS
+
+/* Define if references to the POSIX multithreading library should be made
+ weak. */
+#undef USE_POSIX_THREADS_WEAK
+
+/* Enable extensions on AIX 3, Interix. */
+#ifndef _ALL_SOURCE
+# undef _ALL_SOURCE
+#endif
+/* Enable general extensions on macOS. */
+#ifndef _DARWIN_C_SOURCE
+# undef _DARWIN_C_SOURCE
+#endif
+/* Enable general extensions on Solaris. */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
+/* Enable GNU extensions on systems that have them. */
+#ifndef _GNU_SOURCE
+# undef _GNU_SOURCE
+#endif
+/* Enable X/Open compliant socket functions that do not require linking
+ with -lxnet on HP-UX 11.11. */
+#ifndef _HPUX_ALT_XOPEN_SOCKET_API
+# undef _HPUX_ALT_XOPEN_SOCKET_API
+#endif
+/* Identify the host operating system as Minix.
+ This macro does not affect the system headers' behavior.
+ A future release of Autoconf may stop defining this macro. */
+#ifndef _MINIX
+# undef _MINIX
+#endif
+/* Enable general extensions on NetBSD.
+ Enable NetBSD compatibility extensions on Minix. */
+#ifndef _NETBSD_SOURCE
+# undef _NETBSD_SOURCE
+#endif
+/* Enable OpenBSD compatibility extensions on NetBSD.
+ Oddly enough, this does nothing on OpenBSD. */
+#ifndef _OPENBSD_SOURCE
+# undef _OPENBSD_SOURCE
+#endif
+/* Define to 1 if needed for POSIX-compatible behavior. */
+#ifndef _POSIX_SOURCE
+# undef _POSIX_SOURCE
+#endif
+/* Define to 2 if needed for POSIX-compatible behavior. */
+#ifndef _POSIX_1_SOURCE
+# undef _POSIX_1_SOURCE
+#endif
+/* Enable POSIX-compatible threading on Solaris. */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-5:2014. */
+#ifndef __STDC_WANT_IEC_60559_ATTRIBS_EXT__
+# undef __STDC_WANT_IEC_60559_ATTRIBS_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-1:2014. */
+#ifndef __STDC_WANT_IEC_60559_BFP_EXT__
+# undef __STDC_WANT_IEC_60559_BFP_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-2:2015. */
+#ifndef __STDC_WANT_IEC_60559_DFP_EXT__
+# undef __STDC_WANT_IEC_60559_DFP_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-4:2015. */
+#ifndef __STDC_WANT_IEC_60559_FUNCS_EXT__
+# undef __STDC_WANT_IEC_60559_FUNCS_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-3:2015. */
+#ifndef __STDC_WANT_IEC_60559_TYPES_EXT__
+# undef __STDC_WANT_IEC_60559_TYPES_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TR 24731-2:2010. */
+#ifndef __STDC_WANT_LIB_EXT2__
+# undef __STDC_WANT_LIB_EXT2__
+#endif
+/* Enable extensions specified by ISO/IEC 24747:2009. */
+#ifndef __STDC_WANT_MATH_SPEC_FUNCS__
+# undef __STDC_WANT_MATH_SPEC_FUNCS__
+#endif
+/* Enable extensions on HP NonStop. */
+#ifndef _TANDEM_SOURCE
+# undef _TANDEM_SOURCE
+#endif
+/* Enable X/Open extensions. Define to 500 only if necessary
+ to make mbstate_t available. */
+#ifndef _XOPEN_SOURCE
+# undef _XOPEN_SOURCE
+#endif
+
+
+/* Define to 1 if you want getc etc. to use unlocked I/O if available.
+ Unlocked I/O can improve performance in unithreaded apps, but it is not
+ safe for multithreaded apps. */
+#undef USE_UNLOCKED_IO
+
+/* Define if the native Windows multithreading API can be used. */
+#undef USE_WINDOWS_THREADS
+
+/* Version number of package */
+#undef VERSION
+
+/* Define to l, ll, u, ul, ull, etc., as suitable for constants of type
+ 'wchar_t'. */
+#undef WCHAR_T_SUFFIX
+
+/* Define if the wcrtomb function does not work in the C locale. */
+#undef WCRTOMB_C_LOCALE_BUG
+
+/* Define if the wcrtomb function has an incorrect return value. */
+#undef WCRTOMB_RETVAL_BUG
+
+/* Define if WSAStartup is needed. */
+#undef WINDOWS_SOCKETS
+
+/* Define to l, ll, u, ul, ull, etc., as suitable for constants of type
+ 'wint_t'. */
+#undef WINT_T_SUFFIX
+
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+ significant byte first (like Motorola and SPARC, unlike Intel). */
+#if defined AC_APPLE_UNIVERSAL_BUILD
+# if defined __BIG_ENDIAN__
+# define WORDS_BIGENDIAN 1
+# endif
+#else
+# ifndef WORDS_BIGENDIAN
+# undef WORDS_BIGENDIAN
+# endif
+#endif
+
+/* Define to 1 if `lex' declares `yytext' as a `char *' by default, not a
+ `char[]'. */
+#undef YYTEXT_POINTER
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#undef _FILE_OFFSET_BITS
+
+/* True if the compiler says it groks GNU C version MAJOR.MINOR. */
+#if defined __GNUC__ && defined __GNUC_MINOR__
+# define _GL_GNUC_PREREQ(major, minor) \
+ ((major) < __GNUC__ + ((minor) <= __GNUC_MINOR__))
+#else
+# define _GL_GNUC_PREREQ(major, minor) 0
+#endif
+
+
+/* Define to 1 to make fseeko visible on some hosts (e.g. glibc 2.2). */
+#undef _LARGEFILE_SOURCE
+
+/* Define for large files, on AIX-style hosts. */
+#undef _LARGE_FILES
+
+/* Define to 1 on Solaris. */
+#undef _LCONV_C99
+
+/* The _Noreturn keyword of C11. */
+#ifndef _Noreturn
+# if (defined __cplusplus \
+ && ((201103 <= __cplusplus && !(__GNUC__ == 4 && __GNUC_MINOR__ == 7)) \
+ || (defined _MSC_VER && 1900 <= _MSC_VER)) \
+ && 0)
+ /* [[noreturn]] is not practically usable, because with it the syntax
+ extern _Noreturn void func (...);
+ would not be valid; such a declaration would only be valid with 'extern'
+ and '_Noreturn' swapped, or without the 'extern' keyword. However, some
+ AIX system header files and several gnulib header files use precisely
+ this syntax with 'extern'. */
+# define _Noreturn [[noreturn]]
+# elif ((!defined __cplusplus || defined __clang__) \
+ && (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) \
+ || _GL_GNUC_PREREQ (4, 7) \
+ || (defined __apple_build_version__ \
+ ? 6000000 <= __apple_build_version__ \
+ : 3 < __clang_major__ + (5 <= __clang_minor__))))
+ /* _Noreturn works as-is. */
+# elif _GL_GNUC_PREREQ (2, 8) || defined __clang__ || 0x5110 <= __SUNPRO_C
+# define _Noreturn __attribute__ ((__noreturn__))
+# elif 1200 <= (defined _MSC_VER ? _MSC_VER : 0)
+# define _Noreturn __declspec (noreturn)
+# else
+# define _Noreturn
+# endif
+#endif
+
+
+/* Define to 1 in order to get the POSIX compatible declarations of socket
+ functions. */
+#undef _POSIX_PII_SOCKET
+
+/* Define if you want <regex.h> to include <limits.h>, so that it consistently
+ overrides <limits.h>'s RE_DUP_MAX. */
+#undef _REGEX_INCLUDE_LIMITS_H
+
+/* Define if you want regoff_t to be at least as wide POSIX requires. */
+#undef _REGEX_LARGE_OFFSETS
+
+/* For standard stat data types on VMS. */
+#undef _USE_STD_STAT
+
+/* Define to rpl_ if the getopt replacement functions and variables should be
+ used. */
+#undef __GETOPT_PREFIX
+
+/* Define to 1 if the system <stdint.h> predates C++11. */
+#undef __STDC_CONSTANT_MACROS
+
+/* Define to 1 if the system <stdint.h> predates C++11. */
+#undef __STDC_LIMIT_MACROS
+
+/* The _GL_ASYNC_SAFE marker should be attached to functions that are
+ signal handlers (for signals other than SIGABRT, SIGPIPE) or can be
+ invoked from such signal handlers. Such functions have some restrictions:
+ * All functions that it calls should be marked _GL_ASYNC_SAFE as well,
+ or should be listed as async-signal-safe in POSIX
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/V2_chap02.html#tag_15_04>
+ section 2.4.3. Note that malloc(), sprintf(), and fwrite(), in
+ particular, are NOT async-signal-safe.
+ * All memory locations (variables and struct fields) that these functions
+ access must be marked 'volatile'. This holds for both read and write
+ accesses. Otherwise the compiler might optimize away stores to and
+ reads from such locations that occur in the program, depending on its
+ data flow analysis. For example, when the program contains a loop
+ that is intended to inspect a variable set from within a signal handler
+ while (!signal_occurred)
+ ;
+ the compiler is allowed to transform this into an endless loop if the
+ variable 'signal_occurred' is not declared 'volatile'.
+ Additionally, recall that:
+ * A signal handler should not modify errno (except if it is a handler
+ for a fatal signal and ends by raising the same signal again, thus
+ provoking the termination of the process). If it invokes a function
+ that may clobber errno, it needs to save and restore the value of
+ errno. */
+#define _GL_ASYNC_SAFE
+
+
+/* Attributes. */
+#ifdef __has_attribute
+# define _GL_HAS_ATTRIBUTE(attr) __has_attribute (__##attr##__)
+#else
+# define _GL_HAS_ATTRIBUTE(attr) _GL_ATTR_##attr
+# define _GL_ATTR_alloc_size _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_always_inline _GL_GNUC_PREREQ (3, 2)
+# define _GL_ATTR_artificial _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_cold _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_const _GL_GNUC_PREREQ (2, 95)
+# define _GL_ATTR_deprecated _GL_GNUC_PREREQ (3, 1)
+# define _GL_ATTR_diagnose_if 0
+# define _GL_ATTR_error _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_externally_visible _GL_GNUC_PREREQ (4, 1)
+# define _GL_ATTR_fallthrough _GL_GNUC_PREREQ (7, 0)
+# define _GL_ATTR_format _GL_GNUC_PREREQ (2, 7)
+# define _GL_ATTR_leaf _GL_GNUC_PREREQ (4, 6)
+# ifdef _ICC
+# define _GL_ATTR_may_alias 0
+# else
+# define _GL_ATTR_may_alias _GL_GNUC_PREREQ (3, 3)
+# endif
+# define _GL_ATTR_malloc _GL_GNUC_PREREQ (3, 0)
+# define _GL_ATTR_noinline _GL_GNUC_PREREQ (3, 1)
+# define _GL_ATTR_nonnull _GL_GNUC_PREREQ (3, 3)
+# define _GL_ATTR_nonstring _GL_GNUC_PREREQ (8, 0)
+# define _GL_ATTR_nothrow _GL_GNUC_PREREQ (3, 3)
+# define _GL_ATTR_packed _GL_GNUC_PREREQ (2, 7)
+# define _GL_ATTR_pure _GL_GNUC_PREREQ (2, 96)
+# define _GL_ATTR_returns_nonnull _GL_GNUC_PREREQ (4, 9)
+# define _GL_ATTR_sentinel _GL_GNUC_PREREQ (4, 0)
+# define _GL_ATTR_unused _GL_GNUC_PREREQ (2, 7)
+# define _GL_ATTR_warn_unused_result _GL_GNUC_PREREQ (3, 4)
+#endif
+
+
+#if _GL_HAS_ATTRIBUTE (alloc_size)
+# define _GL_ATTRIBUTE_ALLOC_SIZE(args) __attribute__ ((__alloc_size__ args))
+#else
+# define _GL_ATTRIBUTE_ALLOC_SIZE(args)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (always_inline)
+# define _GL_ATTRIBUTE_ALWAYS_INLINE __attribute__ ((__always_inline__))
+#else
+# define _GL_ATTRIBUTE_ALWAYS_INLINE
+#endif
+
+#if _GL_HAS_ATTRIBUTE (artificial)
+# define _GL_ATTRIBUTE_ARTIFICIAL __attribute__ ((__artificial__))
+#else
+# define _GL_ATTRIBUTE_ARTIFICIAL
+#endif
+
+/* Avoid __attribute__ ((cold)) on MinGW; see thread starting at
+ <https://lists.gnu.org/r/emacs-devel/2019-04/msg01152.html>.
+ Also, Oracle Studio 12.6 requires 'cold' not '__cold__'. */
+#if _GL_HAS_ATTRIBUTE (cold) && !defined __MINGW32__
+# ifndef __SUNPRO_C
+# define _GL_ATTRIBUTE_COLD __attribute__ ((__cold__))
+# else
+# define _GL_ATTRIBUTE_COLD __attribute__ ((cold))
+# endif
+#else
+# define _GL_ATTRIBUTE_COLD
+#endif
+
+#if _GL_HAS_ATTRIBUTE (const)
+# define _GL_ATTRIBUTE_CONST __attribute__ ((__const__))
+#else
+# define _GL_ATTRIBUTE_CONST
+#endif
+
+#if 201710L < __STDC_VERSION__
+# define _GL_ATTRIBUTE_DEPRECATED [[__deprecated__]]
+#elif _GL_HAS_ATTRIBUTE (deprecated)
+# define _GL_ATTRIBUTE_DEPRECATED __attribute__ ((__deprecated__))
+#else
+# define _GL_ATTRIBUTE_DEPRECATED
+#endif
+
+#if _GL_HAS_ATTRIBUTE (error)
+# define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__error__ (msg)))
+# define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__warning__ (msg)))
+#elif _GL_HAS_ATTRIBUTE (diagnose_if)
+# define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__diagnose_if__ (1, msg, "error")))
+# define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__diagnose_if__ (1, msg, "warning")))
+#else
+# define _GL_ATTRIBUTE_ERROR(msg)
+# define _GL_ATTRIBUTE_WARNING(msg)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (externally_visible)
+# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE __attribute__ ((externally_visible))
+#else
+# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE
+#endif
+
+/* FALLTHROUGH is special, because it always expands to something. */
+#if 201710L < __STDC_VERSION__
+# define _GL_ATTRIBUTE_FALLTHROUGH [[__fallthrough__]]
+#elif _GL_HAS_ATTRIBUTE (fallthrough)
+# define _GL_ATTRIBUTE_FALLTHROUGH __attribute__ ((__fallthrough__))
+#else
+# define _GL_ATTRIBUTE_FALLTHROUGH ((void) 0)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (format)
+# define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
+#else
+# define _GL_ATTRIBUTE_FORMAT(spec)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (leaf)
+# define _GL_ATTRIBUTE_LEAF __attribute__ ((__leaf__))
+#else
+# define _GL_ATTRIBUTE_LEAF
+#endif
+
+/* Oracle Studio 12.6 mishandles may_alias despite __has_attribute OK. */
+#if _GL_HAS_ATTRIBUTE (may_alias) && !defined __SUNPRO_C
+# define _GL_ATTRIBUTE_MAY_ALIAS __attribute__ ((__may_alias__))
+#else
+# define _GL_ATTRIBUTE_MAY_ALIAS
+#endif
+
+#if 201710L < __STDC_VERSION__
+# define _GL_ATTRIBUTE_MAYBE_UNUSED [[__maybe_unused__]]
+#elif _GL_HAS_ATTRIBUTE (unused)
+# define _GL_ATTRIBUTE_MAYBE_UNUSED __attribute__ ((__unused__))
+#else
+# define _GL_ATTRIBUTE_MAYBE_UNUSED
+#endif
+/* Earlier spellings of this macro. */
+#define _GL_UNUSED _GL_ATTRIBUTE_MAYBE_UNUSED
+#define _UNUSED_PARAMETER_ _GL_ATTRIBUTE_MAYBE_UNUSED
+
+#if _GL_HAS_ATTRIBUTE (malloc)
+# define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__))
+#else
+# define _GL_ATTRIBUTE_MALLOC
+#endif
+
+#if 201710L < __STDC_VERSION__
+# define _GL_ATTRIBUTE_NODISCARD [[__nodiscard__]]
+#elif _GL_HAS_ATTRIBUTE (warn_unused_result)
+# define _GL_ATTRIBUTE_NODISCARD __attribute__ ((__warn_unused_result__))
+#else
+# define _GL_ATTRIBUTE_NODISCARD
+#endif
+
+#if _GL_HAS_ATTRIBUTE (noinline)
+# define _GL_ATTRIBUTE_NOINLINE __attribute__ ((__noinline__))
+#else
+# define _GL_ATTRIBUTE_NOINLINE
+#endif
+
+#if _GL_HAS_ATTRIBUTE (nonnull)
+# define _GL_ATTRIBUTE_NONNULL(args) __attribute__ ((__nonnull__ args))
+#else
+# define _GL_ATTRIBUTE_NONNULL(args)
+#endif
+
+#if _GL_HAS_ATTRIBUTE (nonstring)
+# define _GL_ATTRIBUTE_NONSTRING __attribute__ ((__nonstring__))
+#else
+# define _GL_ATTRIBUTE_NONSTRING
+#endif
+
+/* There is no _GL_ATTRIBUTE_NORETURN; use _Noreturn instead. */
+
+#if _GL_HAS_ATTRIBUTE (nothrow) && !defined __cplusplus
+# define _GL_ATTRIBUTE_NOTHROW __attribute__ ((__nothrow__))
+#else
+# define _GL_ATTRIBUTE_NOTHROW
+#endif
+
+#if _GL_HAS_ATTRIBUTE (packed)
+# define _GL_ATTRIBUTE_PACKED __attribute__ ((__packed__))
+#else
+# define _GL_ATTRIBUTE_PACKED
+#endif
+
+#if _GL_HAS_ATTRIBUTE (pure)
+# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
+#else
+# define _GL_ATTRIBUTE_PURE
+#endif
+
+#if _GL_HAS_ATTRIBUTE (returns_nonnull)
+# define _GL_ATTRIBUTE_RETURNS_NONNULL __attribute__ ((__returns_nonnull__))
+#else
+# define _GL_ATTRIBUTE_RETURNS_NONNULL
+#endif
+
+#if _GL_HAS_ATTRIBUTE (sentinel)
+# define _GL_ATTRIBUTE_SENTINEL(pos) __attribute__ ((__sentinel__ pos))
+#else
+# define _GL_ATTRIBUTE_SENTINEL(pos)
+#endif
+
+
+/* To support C++ as well as C, use _GL_UNUSED_LABEL with trailing ';'. */
+#if !defined __cplusplus || _GL_GNUC_PREREQ (4, 5)
+# define _GL_UNUSED_LABEL _GL_ATTRIBUTE_MAYBE_UNUSED
+#else
+# define _GL_UNUSED_LABEL
+#endif
+
+
+/* Define to empty if `const' does not conform to ANSI C. */
+#undef const
+
+/* Define as 'access' if you don't have the eaccess() function. */
+#undef eaccess
+
+/* Please see the Gnulib manual for how to use these macros.
+
+ Suppress extern inline with HP-UX cc, as it appears to be broken; see
+ <http://lists.gnu.org/archive/html/bug-texinfo/2013-02/msg00030.html>.
+
+ Suppress extern inline with Sun C in standards-conformance mode, as it
+ mishandles inline functions that call each other. E.g., for 'inline void f
+ (void) { } inline void g (void) { f (); }', c99 incorrectly complains
+ 'reference to static identifier "f" in extern inline function'.
+ This bug was observed with Sun C 5.12 SunOS_i386 2011/11/16.
+
+ Suppress extern inline (with or without __attribute__ ((__gnu_inline__)))
+ on configurations that mistakenly use 'static inline' to implement
+ functions or macros in standard C headers like <ctype.h>. For example,
+ if isdigit is mistakenly implemented via a static inline function,
+ a program containing an extern inline function that calls isdigit
+ may not work since the C standard prohibits extern inline functions
+ from calling static functions. This bug is known to occur on:
+
+ OS X 10.8 and earlier; see:
+ http://lists.gnu.org/archive/html/bug-gnulib/2012-12/msg00023.html
+
+ DragonFly; see
+ http://muscles.dragonflybsd.org/bulk/bleeding-edge-potential/latest-per-pkg/ah-tty-0.3.12.log
+
+ FreeBSD; see:
+ http://lists.gnu.org/archive/html/bug-gnulib/2014-07/msg00104.html
+
+ OS X 10.9 has a macro __header_inline indicating the bug is fixed for C and
+ for clang but remains for g++; see <http://trac.macports.org/ticket/41033>.
+ Assume DragonFly and FreeBSD will be similar. */
+#if (((defined __APPLE__ && defined __MACH__) \
+ || defined __DragonFly__ || defined __FreeBSD__) \
+ && (defined __header_inline \
+ ? (defined __cplusplus && defined __GNUC_STDC_INLINE__ \
+ && ! defined __clang__) \
+ : ((! defined _DONT_USE_CTYPE_INLINE_ \
+ && (defined __GNUC__ || defined __cplusplus)) \
+ || (defined _FORTIFY_SOURCE && 0 < _FORTIFY_SOURCE \
+ && defined __GNUC__ && ! defined __cplusplus))))
+# define _GL_EXTERN_INLINE_STDHEADER_BUG
+#endif
+#if ((__GNUC__ \
+ ? defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ \
+ : (199901L <= __STDC_VERSION__ \
+ && !defined __HP_cc \
+ && !(defined __SUNPRO_C && __STDC__))) \
+ && !defined _GL_EXTERN_INLINE_STDHEADER_BUG)
+# define _GL_INLINE inline
+# define _GL_EXTERN_INLINE extern inline
+# define _GL_EXTERN_INLINE_IN_USE
+#elif (2 < __GNUC__ + (7 <= __GNUC_MINOR__) && !defined __STRICT_ANSI__ \
+ && !defined _GL_EXTERN_INLINE_STDHEADER_BUG)
+# if defined __GNUC_GNU_INLINE__ && __GNUC_GNU_INLINE__
+ /* __gnu_inline__ suppresses a GCC 4.2 diagnostic. */
+# define _GL_INLINE extern inline __attribute__ ((__gnu_inline__))
+# else
+# define _GL_INLINE extern inline
+# endif
+# define _GL_EXTERN_INLINE extern
+# define _GL_EXTERN_INLINE_IN_USE
+#else
+# define _GL_INLINE static _GL_UNUSED
+# define _GL_EXTERN_INLINE static _GL_UNUSED
+#endif
+
+#if 4 < __GNUC__ + (6 <= __GNUC_MINOR__)
+# if defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__
+# define _GL_INLINE_HEADER_CONST_PRAGMA
+# else
+# define _GL_INLINE_HEADER_CONST_PRAGMA \
+ _Pragma ("GCC diagnostic ignored \"-Wsuggest-attribute=const\"")
+# endif
+ /* Suppress GCC's bogus "no previous prototype for 'FOO'"
+ and "no previous declaration for 'FOO'" diagnostics,
+ when FOO is an inline function in the header; see
+ <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54113>. */
+# define _GL_INLINE_HEADER_BEGIN \
+ _Pragma ("GCC diagnostic push") \
+ _Pragma ("GCC diagnostic ignored \"-Wmissing-prototypes\"") \
+ _Pragma ("GCC diagnostic ignored \"-Wmissing-declarations\"") \
+ _GL_INLINE_HEADER_CONST_PRAGMA
+# define _GL_INLINE_HEADER_END \
+ _Pragma ("GCC diagnostic pop")
+#else
+# define _GL_INLINE_HEADER_BEGIN
+# define _GL_INLINE_HEADER_END
+#endif
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+#undef gid_t
+
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+ calls it, or to nothing if 'inline' is not supported under any name. */
+#ifndef __cplusplus
+#undef inline
+#endif
+
+/* Define to long or long long if <stdint.h> and <inttypes.h> don't define. */
+#undef intmax_t
+
+/* Work around a bug in Apple GCC 4.0.1 build 5465: In C99 mode, it supports
+ the ISO C 99 semantics of 'extern inline' (unlike the GNU C semantics of
+ earlier versions), but does not display it by setting __GNUC_STDC_INLINE__.
+ __APPLE__ && __MACH__ test for Mac OS X.
+ __APPLE_CC__ tests for the Apple compiler and its version.
+ __STDC_VERSION__ tests for the C99 mode. */
+#if defined __APPLE__ && defined __MACH__ && __APPLE_CC__ >= 5465 && !defined __cplusplus && __STDC_VERSION__ >= 199901L && !defined __GNUC_STDC_INLINE__
+# define __GNUC_STDC_INLINE__ 1
+#endif
+
+/* Define to a type if <wchar.h> does not define. */
+#undef mbstate_t
+
+/* _GL_CMP (n1, n2) performs a three-valued comparison on n1 vs. n2, where
+ n1 and n2 are expressions without side effects, that evaluate to real
+ numbers (excluding NaN).
+ It returns
+ 1 if n1 > n2
+ 0 if n1 == n2
+ -1 if n1 < n2
+ The naïve code (n1 > n2 ? 1 : n1 < n2 ? -1 : 0) produces a conditional
+ jump with nearly all GCC versions up to GCC 10.
+ This variant (n1 < n2 ? -1 : n1 > n2) produces a conditional with many
+ GCC versions up to GCC 9.
+ The better code (n1 > n2) - (n1 < n2) from Hacker's Delight § 2-9
+ avoids conditional jumps in all GCC versions >= 3.4. */
+#define _GL_CMP(n1, n2) (((n1) > (n2)) - ((n1) < (n2)))
+
+
+/* Define to the real name of the mktime_internal function. */
+#undef mktime_internal
+
+/* Define to `int' if <sys/types.h> does not define. */
+#undef mode_t
+
+/* Define to the type of st_nlink in struct stat, or a supertype. */
+#undef nlink_t
+
+/* Define as a signed integer type capable of holding a process identifier. */
+#undef pid_t
+
+/* Define as the type of the result of subtracting two pointers, if the system
+ doesn't define it. */
+#undef ptrdiff_t
+
+/* Define to rpl_re_comp if the replacement should be used. */
+#undef re_comp
+
+/* Define to rpl_re_compile_fastmap if the replacement should be used. */
+#undef re_compile_fastmap
+
+/* Define to rpl_re_compile_pattern if the replacement should be used. */
+#undef re_compile_pattern
+
+/* Define to rpl_re_exec if the replacement should be used. */
+#undef re_exec
+
+/* Define to rpl_re_match if the replacement should be used. */
+#undef re_match
+
+/* Define to rpl_re_match_2 if the replacement should be used. */
+#undef re_match_2
+
+/* Define to rpl_re_search if the replacement should be used. */
+#undef re_search
+
+/* Define to rpl_re_search_2 if the replacement should be used. */
+#undef re_search_2
+
+/* Define to rpl_re_set_registers if the replacement should be used. */
+#undef re_set_registers
+
+/* Define to rpl_re_set_syntax if the replacement should be used. */
+#undef re_set_syntax
+
+/* Define to rpl_re_syntax_options if the replacement should be used. */
+#undef re_syntax_options
+
+/* Define to rpl_regcomp if the replacement should be used. */
+#undef regcomp
+
+/* Define to rpl_regerror if the replacement should be used. */
+#undef regerror
+
+/* Define to rpl_regexec if the replacement should be used. */
+#undef regexec
+
+/* Define to rpl_regfree if the replacement should be used. */
+#undef regfree
+
+/* Define to the equivalent of the C99 'restrict' keyword, or to
+ nothing if this is not supported. Do not define if restrict is
+ supported only directly. */
+#undef restrict
+/* Work around a bug in older versions of Sun C++, which did not
+ #define __restrict__ or support _Restrict or __restrict__
+ even though the corresponding Sun C compiler ended up with
+ "#define restrict _Restrict" or "#define restrict __restrict__"
+ in the previous line. This workaround can be removed once
+ we assume Oracle Developer Studio 12.5 (2016) or later. */
+#if defined __SUNPRO_CC && !defined __RESTRICT && !defined __restrict__
+# define _Restrict
+# define __restrict__
+#endif
+
+/* Define as an integer type suitable for memory locations that can be
+ accessed atomically even in the presence of asynchronous signals. */
+#undef sig_atomic_t
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+#undef size_t
+
+/* type to use in place of socklen_t if not defined */
+#undef socklen_t
+
+/* Define as a signed type of the same size as size_t. */
+#undef ssize_t
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+#undef uid_t
+
+/* Define to empty if the keyword `volatile' does not work. Warning: valid
+ code using `volatile' can become incorrect without. Disable with care. */
+#undef volatile
diff --git a/src/connect.c b/src/connect.c
new file mode 100644
index 0000000..ad7ba0b
--- /dev/null
+++ b/src/connect.c
@@ -0,0 +1,1084 @@
+/* Establishing and handling network connections.
+ Copyright (C) 1995-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+#include "exits.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <assert.h>
+
+#include <sys/socket.h>
+#include <sys/select.h>
+
+#ifndef WINDOWS
+# ifdef __VMS
+# include "vms_ip.h"
+# else /* def __VMS */
+# include <netdb.h>
+# endif /* def __VMS [else] */
+# include <netinet/in.h>
+# ifndef __BEOS__
+# include <arpa/inet.h>
+# endif
+#endif /* not WINDOWS */
+
+#include <errno.h>
+#include <string.h>
+#include <sys/time.h>
+
+#include "utils.h"
+#include "host.h"
+#include "connect.h"
+#include "hash.h"
+
+#include <stdint.h>
+
+/* Define sockaddr_storage where unavailable (presumably on IPv4-only
+ hosts). */
+
+#ifndef ENABLE_IPV6
+# ifndef HAVE_STRUCT_SOCKADDR_STORAGE
+# define sockaddr_storage sockaddr_in
+# endif
+#endif /* ENABLE_IPV6 */
+
+/* Fill SA as per the data in IP and PORT. SA should point to struct
+ sockaddr_storage if ENABLE_IPV6 is defined, to struct sockaddr_in
+ otherwise. */
+
+static void
+sockaddr_set_data (struct sockaddr *sa, const ip_address *ip, int port)
+{
+ switch (ip->family)
+ {
+ case AF_INET:
+ {
+ struct sockaddr_in *sin = (struct sockaddr_in *)sa;
+ xzero (*sin);
+ sin->sin_family = AF_INET;
+ sin->sin_port = htons (port);
+ sin->sin_addr = ip->data.d4;
+ break;
+ }
+#ifdef ENABLE_IPV6
+ case AF_INET6:
+ {
+ struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
+ xzero (*sin6);
+ sin6->sin6_family = AF_INET6;
+ sin6->sin6_port = htons (port);
+ sin6->sin6_addr = ip->data.d6;
+#ifdef HAVE_SOCKADDR_IN6_SCOPE_ID
+ sin6->sin6_scope_id = ip->ipv6_scope;
+#endif
+ break;
+ }
+#endif /* ENABLE_IPV6 */
+ default:
+ abort ();
+ }
+}
+
+/* Get the data of SA, specifically the IP address and the port. If
+ you're not interested in one or the other information, pass NULL as
+ the pointer. */
+
+static void
+sockaddr_get_data (const struct sockaddr *sa, ip_address *ip, int *port)
+{
+ switch (sa->sa_family)
+ {
+ case AF_INET:
+ {
+ struct sockaddr_in *sin = (struct sockaddr_in *)sa;
+ if (ip)
+ {
+ ip->family = AF_INET;
+ ip->data.d4 = sin->sin_addr;
+ }
+ if (port)
+ *port = ntohs (sin->sin_port);
+ break;
+ }
+#ifdef ENABLE_IPV6
+ case AF_INET6:
+ {
+ struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
+ if (ip)
+ {
+ ip->family = AF_INET6;
+ ip->data.d6 = sin6->sin6_addr;
+#ifdef HAVE_SOCKADDR_IN6_SCOPE_ID
+ ip->ipv6_scope = sin6->sin6_scope_id;
+#endif
+ }
+ if (port)
+ *port = ntohs (sin6->sin6_port);
+ break;
+ }
+#endif
+ default:
+ abort ();
+ }
+}
+
+/* Return the size of the sockaddr structure depending on its
+ family. */
+
+static socklen_t
+sockaddr_size (const struct sockaddr *sa)
+{
+ switch (sa->sa_family)
+ {
+ case AF_INET:
+ return sizeof (struct sockaddr_in);
+#ifdef ENABLE_IPV6
+ case AF_INET6:
+ return sizeof (struct sockaddr_in6);
+#endif
+ default:
+ abort ();
+ }
+}
+
+/* Resolve the bind address specified via --bind-address and store it
+ to SA. The resolved value is stored in a static variable and
+ reused after the first invocation of this function.
+
+ Returns true on success, false on failure. */
+
+static bool
+resolve_bind_address (struct sockaddr *sa)
+{
+ struct address_list *al;
+
+ /* Make sure this is called only once. opt.bind_address doesn't
+ change during a Wget run. */
+ static bool called, should_bind;
+ static ip_address ip;
+ if (called)
+ {
+ if (should_bind)
+ sockaddr_set_data (sa, &ip, 0);
+ return should_bind;
+ }
+ called = true;
+
+ al = lookup_host (opt.bind_address, LH_BIND | LH_SILENT);
+ if (!al)
+ {
+ /* #### We should be able to print the error message here. */
+ logprintf (LOG_NOTQUIET,
+ _("%s: unable to resolve bind address %s; disabling bind.\n"),
+ exec_name, quote (opt.bind_address));
+ should_bind = false;
+ return false;
+ }
+
+ /* Pick the first address in the list and use it as bind address.
+ Perhaps we should try multiple addresses in succession, but I
+ don't think that's necessary in practice. */
+ ip = *address_list_address_at (al, 0);
+ address_list_release (al);
+
+ sockaddr_set_data (sa, &ip, 0);
+ should_bind = true;
+ return true;
+}
+
+struct cwt_context {
+ int fd;
+ const struct sockaddr *addr;
+ socklen_t addrlen;
+ int result;
+};
+
+static void
+connect_with_timeout_callback (void *arg)
+{
+ struct cwt_context *ctx = (struct cwt_context *)arg;
+ ctx->result = connect (ctx->fd, ctx->addr, ctx->addrlen);
+}
+
+/* Like connect, but specifies a timeout. If connecting takes longer
+ than TIMEOUT seconds, -1 is returned and errno is set to
+ ETIMEDOUT. */
+
+static int
+connect_with_timeout (int fd, const struct sockaddr *addr, socklen_t addrlen,
+ double timeout)
+{
+ struct cwt_context ctx;
+ ctx.fd = fd;
+ ctx.addr = addr;
+ ctx.addrlen = addrlen;
+
+ if (run_with_timeout (timeout, connect_with_timeout_callback, &ctx))
+ {
+ errno = ETIMEDOUT;
+ return -1;
+ }
+ if (ctx.result == -1 && errno == EINTR)
+ errno = ETIMEDOUT;
+ return ctx.result;
+}
+
+/* Connect via TCP to the specified address and port.
+
+ If PRINT is non-NULL, it is the host name to print that we're
+ connecting to. */
+
+int
+connect_to_ip (const ip_address *ip, int port, const char *print)
+{
+ struct sockaddr_storage ss;
+ struct sockaddr *sa = (struct sockaddr *)&ss;
+ int sock;
+
+ /* If PRINT is non-NULL, print the "Connecting to..." line, with
+ PRINT being the host name we're connecting to. */
+ if (print)
+ {
+ const char *txt_addr = print_address (ip);
+ if (0 != strcmp (print, txt_addr))
+ {
+ char *str = NULL, *name;
+
+ if (opt.enable_iri && (name = idn_decode ((char *) print)) != NULL)
+ {
+ str = aprintf ("%s (%s)", name, print);
+ xfree (name);
+ }
+
+ logprintf (LOG_VERBOSE, _("Connecting to %s|%s|:%d... "),
+ str ? str : escnonprint_uri (print), txt_addr, port);
+
+ xfree (str);
+ }
+ else
+ {
+ if (ip->family == AF_INET)
+ logprintf (LOG_VERBOSE, _("Connecting to %s:%d... "), txt_addr, port);
+#ifdef ENABLE_IPV6
+ else if (ip->family == AF_INET6)
+ logprintf (LOG_VERBOSE, _("Connecting to [%s]:%d... "), txt_addr, port);
+#endif
+ }
+ }
+
+ /* Store the sockaddr info to SA. */
+ sockaddr_set_data (sa, ip, port);
+
+ /* Create the socket of the family appropriate for the address. */
+ sock = socket (sa->sa_family, SOCK_STREAM, 0);
+ if (sock < 0)
+ goto err;
+
+#if defined(ENABLE_IPV6) && defined(IPV6_V6ONLY)
+ if (opt.ipv6_only) {
+ int on = 1;
+ /* In case of error, we will go on anyway... */
+ int err = setsockopt (sock, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof (on));
+ IF_DEBUG
+ if (err < 0)
+ DEBUGP (("Failed setting IPV6_V6ONLY: %s", strerror (errno)));
+ }
+#endif
+
+ /* For very small rate limits, set the buffer size (and hence,
+ hopefully, the kernel's TCP window size) to the per-second limit.
+ That way we should never have to sleep for more than 1s between
+ network reads. */
+ if (opt.limit_rate && opt.limit_rate < 8192)
+ {
+ int bufsize = opt.limit_rate;
+ if (bufsize < 512)
+ bufsize = 512; /* avoid pathologically small values */
+#ifdef SO_RCVBUF
+ if (setsockopt (sock, SOL_SOCKET, SO_RCVBUF,
+ (void *) &bufsize, (socklen_t) sizeof (bufsize)))
+ logprintf (LOG_NOTQUIET, _("setsockopt SO_RCVBUF failed: %s\n"),
+ strerror (errno));
+#endif
+ /* When we add limit_rate support for writing, which is useful
+ for POST, we should also set SO_SNDBUF here. */
+ }
+
+ if (opt.bind_address)
+ {
+ /* Bind the client side of the socket to the requested
+ address. */
+ struct sockaddr_storage bind_ss;
+ struct sockaddr *bind_sa = (struct sockaddr *)&bind_ss;
+ if (resolve_bind_address (bind_sa))
+ {
+ if (bind (sock, bind_sa, sockaddr_size (bind_sa)) < 0)
+ goto err;
+ }
+ }
+
+ /* Connect the socket to the remote endpoint. */
+ if (connect_with_timeout (sock, sa, sockaddr_size (sa),
+ opt.connect_timeout) < 0)
+ goto err;
+
+ /* Success. */
+ assert (sock >= 0);
+ if (print)
+ logprintf (LOG_VERBOSE, _("connected.\n"));
+ DEBUGP (("Created socket %d.\n", sock));
+ return sock;
+
+ err:
+ {
+ /* Protect errno from possible modifications by close and
+ logprintf. */
+ int save_errno = errno;
+ if (sock >= 0)
+ {
+#ifdef WIN32
+ /* If the connection timed out, fd_close will hang in Gnulib's
+ close_fd_maybe_socket, inside the call to WSAEnumNetworkEvents. */
+ if (errno != ETIMEDOUT)
+#endif
+ fd_close (sock);
+ }
+ if (print)
+ logprintf (LOG_NOTQUIET, _("failed: %s.\n"), strerror (errno));
+ errno = save_errno;
+ return -1;
+ }
+}
+
+/* Connect via TCP to a remote host on the specified port.
+
+ HOST is resolved as an Internet host name. If HOST resolves to
+ more than one IP address, they are tried in the order returned by
+ DNS until connecting to one of them succeeds. */
+
+int
+connect_to_host (const char *host, int port)
+{
+ int i, start, end;
+ int sock;
+
+ struct address_list *al = lookup_host (host, 0);
+
+ retry:
+ if (!al)
+ {
+ logprintf (LOG_NOTQUIET,
+ _("%s: unable to resolve host address %s\n"),
+ exec_name, quote (host));
+ return E_HOST;
+ }
+
+ address_list_get_bounds (al, &start, &end);
+ for (i = start; i < end; i++)
+ {
+ const ip_address *ip = address_list_address_at (al, i);
+ sock = connect_to_ip (ip, port, host);
+ if (sock >= 0)
+ {
+ /* Success. */
+ address_list_set_connected (al);
+ address_list_release (al);
+ return sock;
+ }
+
+ /* The attempt to connect has failed. Continue with the loop
+ and try next address. */
+
+ address_list_set_faulty (al, i);
+ }
+
+ /* Failed to connect to any of the addresses in AL. */
+
+ if (address_list_connected_p (al))
+ {
+ /* We connected to AL before, but cannot do so now. That might
+ indicate that our DNS cache entry for HOST has expired. */
+ address_list_release (al);
+ al = lookup_host (host, LH_REFRESH);
+ goto retry;
+ }
+ address_list_release (al);
+
+ return -1;
+}
+
+/* Create a socket, bind it to local interface BIND_ADDRESS on port
+ *PORT, set up a listen backlog, and return the resulting socket, or
+ -1 in case of error.
+
+ BIND_ADDRESS is the address of the interface to bind to. If it is
+ NULL, the socket is bound to the default address. PORT should
+ point to the port number that will be used for the binding. If
+ that number is 0, the system will choose a suitable port, and the
+ chosen value will be written to *PORT.
+
+ Calling accept() on such a socket waits for and accepts incoming
+ TCP connections. */
+
+int
+bind_local (const ip_address *bind_address, int *port)
+{
+ int sock;
+ struct sockaddr_storage ss;
+ struct sockaddr *sa = (struct sockaddr *)&ss;
+
+ /* For setting options with setsockopt. */
+ int setopt_val = 1;
+ void *setopt_ptr = (void *)&setopt_val;
+ socklen_t setopt_size = sizeof (setopt_val);
+
+ sock = socket (bind_address->family, SOCK_STREAM, 0);
+ if (sock < 0)
+ return -1;
+
+#ifdef SO_REUSEADDR
+ if (setsockopt (sock, SOL_SOCKET, SO_REUSEADDR, setopt_ptr, setopt_size))
+ logprintf (LOG_NOTQUIET, _("setsockopt SO_REUSEADDR failed: %s\n"),
+ strerror (errno));
+#endif
+
+ xzero (ss);
+ sockaddr_set_data (sa, bind_address, *port);
+ if (bind (sock, sa, sockaddr_size (sa)) < 0)
+ {
+ fd_close (sock);
+ return -1;
+ }
+ DEBUGP (("Local socket fd %d bound.\n", sock));
+
+ /* If *PORT is 0, find out which port we've bound to. */
+ if (*port == 0)
+ {
+ socklen_t addrlen = sockaddr_size (sa);
+ if (getsockname (sock, sa, &addrlen) < 0)
+ {
+ /* If we can't find out the socket's local address ("name"),
+ something is seriously wrong with the socket, and it's
+ unusable for us anyway because we must know the chosen
+ port. */
+ fd_close (sock);
+ return -1;
+ }
+ sockaddr_get_data (sa, NULL, port);
+ DEBUGP (("binding to address %s using port %i.\n",
+ print_address (bind_address), *port));
+ }
+ if (listen (sock, 1) < 0)
+ {
+ fd_close (sock);
+ return -1;
+ }
+ return sock;
+}
+
+/* Like a call to accept(), but with the added check for timeout.
+
+ In other words, accept a client connection on LOCAL_SOCK, and
+ return the new socket used for communication with the client.
+ LOCAL_SOCK should have been bound, e.g. using bind_local().
+
+ The caller is blocked until a connection is established. If no
+ connection is established for opt.connect_timeout seconds, the
+ function exits with an error status. */
+
+int
+accept_connection (int local_sock)
+{
+ int sock;
+
+ /* We don't need the values provided by accept, but accept
+ apparently requires them to be present. */
+ struct sockaddr_storage ss;
+ struct sockaddr *sa = (struct sockaddr *)&ss;
+ socklen_t addrlen = sizeof (ss);
+
+ if (opt.connect_timeout)
+ {
+ int test = select_fd (local_sock, opt.connect_timeout, WAIT_FOR_READ);
+ if (test == 0)
+ errno = ETIMEDOUT;
+ if (test <= 0)
+ return -1;
+ }
+ sock = accept (local_sock, sa, &addrlen);
+ DEBUGP (("Accepted client at socket %d.\n", sock));
+ return sock;
+}
+
+/* Get the IP address associated with the connection on FD and store
+ it to IP. Return true on success, false otherwise.
+
+ If ENDPOINT is ENDPOINT_LOCAL, it returns the address of the local
+ (client) side of the socket. Else if ENDPOINT is ENDPOINT_PEER, it
+ returns the address of the remote (peer's) side of the socket. */
+
+bool
+socket_ip_address (int sock, ip_address *ip, int endpoint)
+{
+ struct sockaddr_storage storage;
+ struct sockaddr *sockaddr = (struct sockaddr *) &storage;
+ socklen_t addrlen = sizeof (storage);
+ int ret;
+
+ memset (sockaddr, 0, addrlen);
+ if (endpoint == ENDPOINT_LOCAL)
+ ret = getsockname (sock, sockaddr, &addrlen);
+ else if (endpoint == ENDPOINT_PEER)
+ ret = getpeername (sock, sockaddr, &addrlen);
+ else
+ abort ();
+ if (ret < 0)
+ return false;
+
+ memset(ip, 0, sizeof(ip_address));
+ ip->family = sockaddr->sa_family;
+ switch (sockaddr->sa_family)
+ {
+#ifdef ENABLE_IPV6
+ case AF_INET6:
+ {
+ struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)&storage;
+ ip->data.d6 = sa6->sin6_addr;
+#ifdef HAVE_SOCKADDR_IN6_SCOPE_ID
+ ip->ipv6_scope = sa6->sin6_scope_id;
+#endif
+ DEBUGP (("conaddr is: %s\n", print_address (ip)));
+ return true;
+ }
+#endif
+ case AF_INET:
+ {
+ struct sockaddr_in *sa = (struct sockaddr_in *)&storage;
+ ip->data.d4 = sa->sin_addr;
+ DEBUGP (("conaddr is: %s\n", print_address (ip)));
+ return true;
+ }
+ default:
+ abort ();
+ }
+}
+
+/* Get the socket family of connection on FD and store
+ Return family type on success, -1 otherwise.
+
+ If ENDPOINT is ENDPOINT_LOCAL, it returns the sock family of the local
+ (client) side of the socket. Else if ENDPOINT is ENDPOINT_PEER, it
+ returns the sock family of the remote (peer's) side of the socket. */
+
+int
+socket_family (int sock, int endpoint)
+{
+ struct sockaddr_storage storage;
+ struct sockaddr *sockaddr = (struct sockaddr *) &storage;
+ socklen_t addrlen = sizeof (storage);
+ int ret;
+
+ memset (sockaddr, 0, addrlen);
+
+ if (endpoint == ENDPOINT_LOCAL)
+ ret = getsockname (sock, sockaddr, &addrlen);
+ else if (endpoint == ENDPOINT_PEER)
+ ret = getpeername (sock, sockaddr, &addrlen);
+ else
+ abort ();
+
+ if (ret < 0)
+ return -1;
+
+ return sockaddr->sa_family;
+}
+
+/* Return true if the error from the connect code can be considered
+ retryable. Wget normally retries after errors, but the exception
+ are the "unsupported protocol" type errors (possible on IPv4/IPv6
+ dual family systems) and "connection refused". */
+
+bool
+retryable_socket_connect_error (int err)
+{
+ /* Have to guard against some of these values not being defined.
+ Cannot use a switch statement because some of the values might be
+ equal. */
+ if (false
+#ifdef EAFNOSUPPORT
+ || err == EAFNOSUPPORT
+#endif
+#ifdef EPFNOSUPPORT
+ || err == EPFNOSUPPORT
+#endif
+#ifdef ESOCKTNOSUPPORT /* no, "sockt" is not a typo! */
+ || err == ESOCKTNOSUPPORT
+#endif
+#ifdef EPROTONOSUPPORT
+ || err == EPROTONOSUPPORT
+#endif
+#ifdef ENOPROTOOPT
+ || err == ENOPROTOOPT
+#endif
+ /* Apparently, older versions of Linux and BSD used EINVAL
+ instead of EAFNOSUPPORT and such. */
+ || err == EINVAL
+ )
+ return false;
+
+ if (!opt.retry_connrefused)
+ if (err == ECONNREFUSED
+#ifdef ENETUNREACH
+ || err == ENETUNREACH /* network is unreachable */
+#endif
+#ifdef EHOSTUNREACH
+ || err == EHOSTUNREACH /* host is unreachable */
+#endif
+ )
+ return false;
+
+ return true;
+}
+
+/* Wait for a single descriptor to become available, timing out after
+ MAXTIME seconds. Returns 1 if FD is available, 0 for timeout and
+ -1 for error. The argument WAIT_FOR can be a combination of
+ WAIT_FOR_READ and WAIT_FOR_WRITE.
+
+ This is a mere convenience wrapper around the select call, and
+ should be taken as such (for example, it doesn't implement Wget's
+ 0-timeout-means-no-timeout semantics.) */
+
+static int
+select_fd_internal (int fd, double maxtime, int wait_for, bool convert_back _GL_UNUSED)
+{
+ fd_set fdset;
+ fd_set *rd = NULL, *wr = NULL;
+ struct timeval tmout;
+ int result;
+
+ if (fd < 0)
+ return -1;
+
+ if (fd >= FD_SETSIZE)
+ {
+ logprintf (LOG_NOTQUIET, _("Too many fds open. Cannot use select on a fd >= %d\n"), FD_SETSIZE);
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ FD_ZERO (&fdset);
+ FD_SET (fd, &fdset);
+ if (wait_for & WAIT_FOR_READ)
+ rd = &fdset;
+ if (wait_for & WAIT_FOR_WRITE)
+ wr = &fdset;
+
+ tmout.tv_sec = (long) maxtime;
+ tmout.tv_usec = 1000000 * (maxtime - (long) maxtime);
+
+ do
+ {
+ result = select (fd + 1, rd, wr, NULL, &tmout);
+#ifdef WINDOWS
+ /* gnulib select() converts blocking sockets to nonblocking in windows.
+ wget uses blocking sockets so we must convert them back to blocking. */
+ if (convert_back)
+ set_windows_fd_as_blocking_socket (fd);
+#endif
+ }
+ while (result < 0 && errno == EINTR);
+
+ return result;
+}
+
+int
+select_fd (int fd, double maxtime, int wait_for)
+{
+ return select_fd_internal (fd, maxtime, wait_for, true);
+}
+
+#ifdef WINDOWS
+int
+select_fd_nb (int fd, double maxtime, int wait_for)
+{
+ return select_fd_internal (fd, maxtime, wait_for, false);
+}
+#endif
+
+/* Return true if the connection to the remote site established
+ through SOCK is still open.
+
+ Specifically, this function returns true if SOCK is not ready for
+ reading. This is because, when the connection closes, the socket
+ is ready for reading because EOF is about to be delivered. A side
+ effect of this method is that sockets that have pending data are
+ considered non-open. This is actually a good thing for callers of
+ this function, where such pending data can only be unwanted
+ leftover from a previous request. */
+
+bool
+test_socket_open (int sock)
+{
+ fd_set check_set;
+ struct timeval to;
+ int ret = 0;
+
+ if (sock >= FD_SETSIZE)
+ {
+ logprintf (LOG_NOTQUIET, _("Too many fds open. Cannot use select on a fd >= %d\n"), FD_SETSIZE);
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ /* Check if we still have a valid (non-EOF) connection. From Andrew
+ * Maholski's code in the Unix Socket FAQ. */
+
+ FD_ZERO (&check_set);
+ FD_SET (sock, &check_set);
+
+ /* Wait one microsecond */
+ to.tv_sec = 0;
+ to.tv_usec = 1;
+
+ ret = select (sock + 1, &check_set, NULL, NULL, &to);
+#ifdef WINDOWS
+/* gnulib select() converts blocking sockets to nonblocking in windows.
+wget uses blocking sockets so we must convert them back to blocking
+*/
+ set_windows_fd_as_blocking_socket ( sock );
+#endif
+
+ if ( !ret )
+ /* We got a timeout, it means we're still connected. */
+ return true;
+ else
+ /* Read now would not wait, it means we have either pending data
+ or EOF/error. */
+ return false;
+}
+
+/* Basic socket operations, mostly EINTR wrappers. */
+
+static int
+sock_read (int fd, char *buf, int bufsize)
+{
+ int res;
+ do
+ res = read (fd, buf, bufsize);
+ while (res == -1 && errno == EINTR);
+ return res;
+}
+
+static int
+sock_write (int fd, char *buf, int bufsize)
+{
+ int res;
+ do
+ res = write (fd, buf, bufsize);
+ while (res == -1 && errno == EINTR);
+ return res;
+}
+
+static int
+sock_poll (int fd, double timeout, int wait_for)
+{
+ return select_fd (fd, timeout, wait_for);
+}
+
+static int
+sock_peek (int fd, char *buf, int bufsize)
+{
+ int res;
+ do
+ res = recv (fd, buf, bufsize, MSG_PEEK);
+ while (res == -1 && errno == EINTR);
+ return res;
+}
+
+static void
+sock_close (int fd)
+{
+ close (fd);
+ DEBUGP (("Closed fd %d\n", fd));
+}
+#undef read
+#undef write
+#undef close
+
+/* Reading and writing from the network. We build around the socket
+ (file descriptor) API, but support "extended" operations for things
+ that are not mere file descriptors under the hood, such as SSL
+ sockets.
+
+ That way the user code can call fd_read(fd, ...) and we'll run read
+ or SSL_read or whatever is necessary. */
+
+static struct hash_table *transport_map;
+static unsigned int transport_map_modified_tick;
+
+struct transport_info {
+ struct transport_implementation *imp;
+ void *ctx;
+};
+
+/* Register the transport layer operations that will be used when
+ reading, writing, and polling FD.
+
+ This should be used for transport layers like SSL that piggyback on
+ sockets. FD should otherwise be a real socket, on which you can
+ call getpeername, etc. */
+
+void
+fd_register_transport (int fd, struct transport_implementation *imp, void *ctx)
+{
+ struct transport_info *info;
+
+ /* The file descriptor must be non-negative to be registered.
+ Negative values are ignored by fd_close(), and -1 cannot be used as
+ hash key. */
+ assert (fd >= 0);
+
+ info = xnew (struct transport_info);
+ info->imp = imp;
+ info->ctx = ctx;
+ if (!transport_map)
+ transport_map = hash_table_new (0, NULL, NULL);
+ hash_table_put (transport_map, (void *)(intptr_t) fd, info);
+ ++transport_map_modified_tick;
+}
+
+/* Return context of the transport registered with
+ fd_register_transport. This assumes fd_register_transport was
+ previously called on FD. */
+
+void *
+fd_transport_context (int fd)
+{
+ struct transport_info *info = hash_table_get (transport_map, (void *)(intptr_t) fd);
+ return info ? info->ctx : NULL;
+}
+
+/* When fd_read/fd_write are called multiple times in a loop, they should
+ remember the INFO pointer instead of fetching it every time. It is
+ not enough to compare FD to LAST_FD because FD might have been
+ closed and reopened. modified_tick ensures that changes to
+ transport_map will not be unnoticed.
+
+ This is a macro because we want the static storage variables to be
+ per-function. */
+
+#define LAZY_RETRIEVE_INFO(info) do { \
+ static struct transport_info *last_info; \
+ static int last_fd = -1; \
+ static unsigned int last_tick; \
+ if (!transport_map) \
+ info = NULL; \
+ else if (last_fd == fd && last_tick == transport_map_modified_tick) \
+ info = last_info; \
+ else \
+ { \
+ info = hash_table_get (transport_map, (void *)(intptr_t) fd); \
+ last_fd = fd; \
+ last_info = info; \
+ last_tick = transport_map_modified_tick; \
+ } \
+} while (0)
+
+static bool
+poll_internal (int fd, struct transport_info *info, int wf, double timeout)
+{
+ if (timeout == -1)
+ timeout = opt.read_timeout;
+ if (timeout)
+ {
+ int test;
+ if (info && info->imp->poller)
+ test = info->imp->poller (fd, timeout, wf, info->ctx);
+ else
+ test = sock_poll (fd, timeout, wf);
+ if (test == 0)
+ errno = ETIMEDOUT;
+ if (test <= 0)
+ return false;
+ }
+ return true;
+}
+
+/* Read no more than BUFSIZE bytes of data from FD, storing them to
+ BUF. If TIMEOUT is non-zero, the operation aborts if no data is
+ received after that many seconds. If TIMEOUT is -1, the value of
+ opt.timeout is used for TIMEOUT. */
+
+int
+fd_read (int fd, char *buf, int bufsize, double timeout)
+{
+ struct transport_info *info;
+ LAZY_RETRIEVE_INFO (info);
+
+ /* let imp->reader take care about timeout.
+ (or in worst case timeout can be 2*timeout) */
+ if (info && info->imp->reader)
+ return info->imp->reader (fd, buf, bufsize, info->ctx, timeout);
+
+ if (!poll_internal (fd, info, WAIT_FOR_READ, timeout))
+ return -1;
+ return sock_read (fd, buf, bufsize);
+}
+
+/* Like fd_read, except it provides a "preview" of the data that will
+ be read by subsequent calls to fd_read. Specifically, it copies no
+ more than BUFSIZE bytes of the currently available data to BUF and
+ returns the number of bytes copied. Return values and timeout
+ semantics are the same as those of fd_read.
+
+ CAVEAT: Do not assume that the first subsequent call to fd_read
+ will retrieve the same amount of data. Reading can return more or
+ less data, depending on the TCP implementation and other
+ circumstances. However, barring an error, it can be expected that
+ all the peeked data will eventually be read by fd_read. */
+
+int
+fd_peek (int fd, char *buf, int bufsize, double timeout)
+{
+ struct transport_info *info;
+ LAZY_RETRIEVE_INFO (info);
+
+ if (info && info->imp->peeker)
+ return info->imp->peeker (fd, buf, bufsize, info->ctx, timeout);
+
+ if (!poll_internal (fd, info, WAIT_FOR_READ, timeout))
+ return -1;
+ return sock_peek (fd, buf, bufsize);
+}
+
+/* Write the entire contents of BUF to FD. If TIMEOUT is non-zero,
+ the operation aborts if no data is received after that many
+ seconds. If TIMEOUT is -1, the value of opt.timeout is used for
+ TIMEOUT. */
+
+int
+fd_write (int fd, char *buf, int bufsize, double timeout)
+{
+ int res;
+ struct transport_info *info;
+ LAZY_RETRIEVE_INFO (info);
+
+ /* `write' may write less than LEN bytes, thus the loop keeps trying
+ it until all was written, or an error occurred. */
+ res = 0;
+ while (bufsize > 0)
+ {
+ if (!poll_internal (fd, info, WAIT_FOR_WRITE, timeout))
+ return -1;
+ if (info && info->imp->writer)
+ res = info->imp->writer (fd, buf, bufsize, info->ctx);
+ else
+ res = sock_write (fd, buf, bufsize);
+ if (res <= 0)
+ break;
+ buf += res;
+ bufsize -= res;
+ }
+ return res;
+}
+
+/* Report the most recent error(s) on FD. This should only be called
+ after fd_* functions, such as fd_read and fd_write, and only if
+ they return a negative result. For errors coming from other calls
+ such as setsockopt or fopen, strerror should continue to be
+ used.
+
+ If the transport doesn't support error messages or doesn't supply
+ one, strerror(errno) is returned. The returned error message
+ should not be used after fd_close has been called. */
+
+const char *
+fd_errstr (int fd)
+{
+ /* Don't bother with LAZY_RETRIEVE_INFO, as this will only be called
+ in case of error, never in a tight loop. */
+ struct transport_info *info = NULL;
+
+ if (transport_map)
+ info = hash_table_get (transport_map, (void *)(intptr_t) fd);
+
+ if (info && info->imp->errstr)
+ {
+ const char *err = info->imp->errstr (fd, info->ctx);
+ if (err)
+ return err;
+ /* else, fall through and print the system error. */
+ }
+ return strerror (errno);
+}
+
+/* Close the file descriptor FD. */
+
+void
+fd_close (int fd)
+{
+ struct transport_info *info;
+ if (fd < 0)
+ return;
+
+ /* Don't use LAZY_RETRIEVE_INFO because fd_close() is only called once
+ per socket, so that particular optimization wouldn't work. */
+ info = NULL;
+ if (transport_map)
+ info = hash_table_get (transport_map, (void *)(intptr_t) fd);
+
+ if (info && info->imp->closer)
+ info->imp->closer (fd, info->ctx);
+ else
+ sock_close (fd);
+
+ if (info)
+ {
+ hash_table_remove (transport_map, (void *)(intptr_t) fd);
+ xfree (info);
+ ++transport_map_modified_tick;
+ }
+}
+
+#if defined DEBUG_MALLOC || defined TESTING
+void
+connect_cleanup(void)
+{
+ if (transport_map)
+ {
+ hash_table_iterator iter;
+ for (hash_table_iterate (transport_map, &iter); hash_table_iter_next (&iter); )
+ {
+ xfree (iter.value);
+ }
+ hash_table_destroy (transport_map);
+ transport_map = NULL;
+ }
+}
+#endif
diff --git a/src/connect.h b/src/connect.h
new file mode 100644
index 0000000..8453559
--- /dev/null
+++ b/src/connect.h
@@ -0,0 +1,89 @@
+/* Declarations for connect.
+ Copyright (C) 1996-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef CONNECT_H
+#define CONNECT_H
+
+#include "host.h" /* for definition of ip_address */
+
+/* Function declarations */
+
+/* Returned by connect_to_host when host name cannot be resolved. */
+enum {
+ E_HOST = -100
+};
+int connect_to_host (const char *, int);
+int connect_to_ip (const ip_address *, int, const char *);
+
+int bind_local (const ip_address *, int *);
+int accept_connection (int);
+
+enum {
+ ENDPOINT_LOCAL,
+ ENDPOINT_PEER
+};
+bool socket_ip_address (int, ip_address *, int);
+int socket_family (int sock, int endpoint);
+
+bool retryable_socket_connect_error (int);
+
+/* Flags for select_fd's WAIT_FOR argument. */
+enum {
+ WAIT_FOR_READ = 1,
+ WAIT_FOR_WRITE = 2
+};
+int select_fd (int, double, int);
+bool test_socket_open (int);
+
+struct transport_implementation {
+ int (*reader) (int, char *, int, void *, double);
+ int (*writer) (int, char *, int, void *);
+ int (*poller) (int, double, int, void *);
+ int (*peeker) (int, char *, int, void *, double);
+ const char *(*errstr) (int, void *);
+ void (*closer) (int, void *);
+};
+
+void fd_register_transport (int, struct transport_implementation *, void *);
+void *fd_transport_context (int);
+int fd_read (int, char *, int, double);
+int fd_write (int, char *, int, double);
+int fd_peek (int, char *, int, double);
+const char *fd_errstr (int);
+void fd_close (int);
+void connect_cleanup (void);
+
+#ifdef WINDOWS
+int select_fd_nb (int, double, int);
+#else
+#define select_fd_nb select_fd
+#endif
+
+#endif /* CONNECT_H */
diff --git a/src/convert.c b/src/convert.c
new file mode 100644
index 0000000..f422178
--- /dev/null
+++ b/src/convert.c
@@ -0,0 +1,1230 @@
+/* Conversion of links to local files.
+ Copyright (C) 2003-2011, 2014-2015, 2018-2020 Free Software
+ Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <assert.h>
+#include "convert.h"
+#include "url.h"
+#include "recur.h"
+#include "utils.h"
+#include "hash.h"
+#include "ptimer.h"
+#include "res.h"
+#include "html-url.h"
+#include "css-url.h"
+#include "iri.h"
+#include "xstrndup.h"
+
+static struct hash_table *dl_file_url_map;
+struct hash_table *dl_url_file_map;
+
+/* Set of HTML/CSS files downloaded in this Wget run, used for link
+ conversion after Wget is done. */
+struct hash_table *downloaded_html_set;
+struct hash_table *downloaded_css_set;
+
+static void convert_links (const char *, struct urlpos *);
+
+
+static void
+convert_links_in_hashtable (struct hash_table *downloaded_set,
+ int is_css,
+ int *file_count)
+{
+ int i, cnt = 0;
+ char *arr[1024], **file_array;
+
+ if (!downloaded_set || (cnt = hash_table_count (downloaded_set)) == 0)
+ return;
+
+ if (cnt <= (int) countof (arr))
+ file_array = arr;
+ else
+ file_array = xmalloc (cnt * sizeof (arr[0]));
+
+ string_set_to_array (downloaded_set, file_array);
+
+ for (i = 0; i < cnt; i++)
+ {
+ struct urlpos *urls, *cur_url;
+ char *url;
+ char *file = file_array[i];
+
+ /* Determine the URL of the file. get_urls_{html,css} will need
+ it. */
+ url = hash_table_get (dl_file_url_map, file);
+ if (!url)
+ {
+ DEBUGP (("Apparently %s has been removed.\n", file));
+ continue;
+ }
+
+ DEBUGP (("Scanning %s (from %s)\n", file, url));
+
+ /* Parse the file... */
+ urls = is_css ? get_urls_css_file (file, url) :
+ get_urls_html (file, url, NULL, NULL);
+
+ /* We don't respect meta_disallow_follow here because, even if
+ the file is not followed, we might still want to convert the
+ links that have been followed from other files. */
+
+ for (cur_url = urls; cur_url; cur_url = cur_url->next)
+ {
+ char *local_name;
+ struct url *u;
+ struct iri *pi;
+
+ if (cur_url->link_base_p)
+ {
+ /* Base references have been resolved by our parser, so
+ we turn the base URL into an empty string. (Perhaps
+ we should remove the tag entirely?) */
+ cur_url->convert = CO_NULLIFY_BASE;
+ continue;
+ }
+
+ /* We decide the direction of conversion according to whether
+ a URL was downloaded. Downloaded URLs will be converted
+ ABS2REL, whereas non-downloaded will be converted REL2ABS. */
+
+ pi = iri_new ();
+ set_uri_encoding (pi, opt.locale, true);
+
+ u = url_parse (cur_url->url->url, NULL, pi, true);
+ if (!u)
+ continue;
+
+ local_name = hash_table_get (dl_url_file_map, u->url);
+
+ /* Decide on the conversion type. */
+ if (local_name)
+ {
+ /* We've downloaded this URL. Convert it to relative
+ form. We do this even if the URL already is in
+ relative form, because our directory structure may
+ not be identical to that on the server (think `-nd',
+ `--cut-dirs', etc.). If --convert-file-only was passed,
+ we only convert the basename portion of the URL. */
+ cur_url->convert = (opt.convert_file_only ? CO_CONVERT_BASENAME_ONLY : CO_CONVERT_TO_RELATIVE);
+ cur_url->local_name = xstrdup (local_name);
+ DEBUGP (("will convert url %s to local %s\n", u->url, local_name));
+ }
+ else
+ {
+ /* We haven't downloaded this URL. If it's not already
+ complete (including a full host name), convert it to
+ that form, so it can be reached while browsing this
+ HTML locally. */
+ if (!cur_url->link_complete_p)
+ cur_url->convert = CO_CONVERT_TO_COMPLETE;
+ cur_url->local_name = NULL;
+ DEBUGP (("will convert url %s to complete\n", u->url));
+ }
+
+ url_free (u);
+ iri_free (pi);
+ }
+
+ /* Convert the links in the file. */
+ convert_links (file, urls);
+ ++*file_count;
+
+ /* Free the data. */
+ free_urlpos (urls);
+ }
+
+ if (file_array != arr)
+ xfree (file_array);
+}
+
+/* This function is called when the retrieval is done to convert the
+ links that have been downloaded. It has to be called at the end of
+ the retrieval, because only then does Wget know conclusively which
+ URLs have been downloaded, and which not, so it can tell which
+ direction to convert to.
+
+ The "direction" means that the URLs to the files that have been
+ downloaded get converted to the relative URL which will point to
+ that file. And the other URLs get converted to the remote URL on
+ the server.
+
+ All the downloaded HTMLs are kept in downloaded_html_files, and
+ downloaded URLs in urls_downloaded. All the information is
+ extracted from these two lists. */
+
+void
+convert_all_links (void)
+{
+ double secs;
+ int file_count = 0;
+
+ struct ptimer *timer = ptimer_new ();
+
+ convert_links_in_hashtable (downloaded_html_set, 0, &file_count);
+ convert_links_in_hashtable (downloaded_css_set, 1, &file_count);
+
+ secs = ptimer_measure (timer);
+ logprintf (LOG_VERBOSE, _("Converted links in %d files in %s seconds.\n"),
+ file_count, print_decimal (secs));
+
+ ptimer_destroy (timer);
+}
+
+static void write_backup_file (const char *, downloaded_file_t);
+static const char *replace_plain (const char*, int, FILE*, const char *);
+static const char *replace_attr (const char *, int, FILE *, const char *);
+static const char *replace_attr_refresh_hack (const char *, int, FILE *,
+ const char *, int);
+static char *local_quote_string (const char *, bool);
+static char *construct_relative (const char *, const char *);
+static char *convert_basename (const char *, const struct urlpos *);
+
+/* Change the links in one file. LINKS is a list of links in the
+ document, along with their positions and the desired direction of
+ the conversion. */
+static void
+convert_links (const char *file, struct urlpos *links)
+{
+ struct file_memory *fm;
+ FILE *fp;
+ const char *p;
+ downloaded_file_t downloaded_file_return;
+
+ struct urlpos *link;
+ int to_url_count = 0, to_file_count = 0;
+
+ logprintf (LOG_VERBOSE, _("Converting links in %s... "), file);
+
+ {
+ /* First we do a "dry run": go through the list L and see whether
+ any URL needs to be converted in the first place. If not, just
+ leave the file alone. */
+ int dry_count = 0;
+ struct urlpos *dry;
+ for (dry = links; dry; dry = dry->next)
+ if (dry->convert != CO_NOCONVERT)
+ ++dry_count;
+ if (!dry_count)
+ {
+ logputs (LOG_VERBOSE, _("nothing to do.\n"));
+ return;
+ }
+ logprintf (LOG_VERBOSE, _("%d.\n"), dry_count);
+ }
+
+ fm = wget_read_file (file);
+ if (!fm)
+ {
+ logprintf (LOG_NOTQUIET, _("Cannot convert links in %s: %s\n"),
+ file, strerror (errno));
+ return;
+ }
+
+ downloaded_file_return = downloaded_file (CHECK_FOR_FILE, file);
+ if (opt.backup_converted && downloaded_file_return)
+ write_backup_file (file, downloaded_file_return);
+
+ /* Before opening the file for writing, unlink the file. This is
+ important if the data in FM is mapped. In such case, nulling the
+ file, which is what fopen() below does, would make us read all
+ zeroes from the mapped region. */
+ if (unlink (file) < 0 && errno != ENOENT)
+ {
+ logprintf (LOG_NOTQUIET, _("Unable to delete %s: %s\n"),
+ quote (file), strerror (errno));
+ wget_read_file_free (fm);
+ return;
+ }
+ /* Now open the file for writing. */
+ fp = fopen (file, "wb");
+ if (!fp)
+ {
+ logprintf (LOG_NOTQUIET, _("Cannot convert links in %s: %s\n"),
+ file, strerror (errno));
+ wget_read_file_free (fm);
+ return;
+ }
+
+ /* Here we loop through all the URLs in file, replacing those of
+ them that are downloaded with relative references. */
+ p = fm->content;
+ for (link = links; link; link = link->next)
+ {
+ char *url_start = fm->content + link->pos;
+
+ if (link->pos >= fm->length)
+ {
+ DEBUGP (("Something strange is going on. Please investigate."));
+ break;
+ }
+ /* If the URL is not to be converted, skip it. */
+ if (link->convert == CO_NOCONVERT)
+ {
+ DEBUGP (("Skipping %s at position %d.\n", link->url->url, link->pos));
+ continue;
+ }
+
+ /* Echo the file contents, up to the offending URL's opening
+ quote, to the outfile. */
+ fwrite (p, 1, url_start - p, fp);
+ p = url_start;
+
+ switch (link->convert)
+ {
+ case CO_CONVERT_TO_RELATIVE:
+ /* Convert absolute URL to relative. */
+ if (link->local_name) {
+ char *newname = construct_relative (file, link->local_name);
+ char *quoted_newname = local_quote_string (newname,
+ link->link_css_p);
+
+ if (link->link_css_p || link->link_noquote_html_p)
+ p = replace_plain (p, link->size, fp, quoted_newname);
+ else if (!link->link_refresh_p)
+ p = replace_attr (p, link->size, fp, quoted_newname);
+ else
+ p = replace_attr_refresh_hack (p, link->size, fp, quoted_newname,
+ link->refresh_timeout);
+
+ DEBUGP (("TO_RELATIVE: %s to %s at position %d in %s.\n",
+ link->url->url, newname, link->pos, file));
+
+ xfree (newname);
+ xfree (quoted_newname);
+ ++to_file_count;
+ }
+ break;
+ case CO_CONVERT_BASENAME_ONLY:
+ {
+ char *newname = convert_basename (p, link);
+ char *quoted_newname = local_quote_string (newname, link->link_css_p);
+
+ if (link->link_css_p || link->link_noquote_html_p)
+ p = replace_plain (p, link->size, fp, quoted_newname);
+ else if (!link->link_refresh_p)
+ p = replace_attr (p, link->size, fp, quoted_newname);
+ else
+ p = replace_attr_refresh_hack (p, link->size, fp, quoted_newname,
+ link->refresh_timeout);
+
+ DEBUGP (("Converted file part only: %s to %s at position %d in %s.\n",
+ link->url->url, newname, link->pos, file));
+
+ xfree (newname);
+ xfree (quoted_newname);
+ ++to_file_count;
+
+ break;
+ }
+ case CO_CONVERT_TO_COMPLETE:
+ /* Convert the link to absolute URL. */
+ {
+ char *newlink = link->url->url;
+ char *quoted_newlink = html_quote_string (newlink);
+
+ if (link->link_css_p || link->link_noquote_html_p)
+ p = replace_plain (p, link->size, fp, newlink);
+ else if (!link->link_refresh_p)
+ p = replace_attr (p, link->size, fp, quoted_newlink);
+ else
+ p = replace_attr_refresh_hack (p, link->size, fp, quoted_newlink,
+ link->refresh_timeout);
+
+ DEBUGP (("TO_COMPLETE: <something> to %s at position %d in %s.\n",
+ newlink, link->pos, file));
+
+ xfree (quoted_newlink);
+ ++to_url_count;
+ break;
+ }
+ case CO_NULLIFY_BASE:
+ /* Change the base href to "". */
+ p = replace_attr (p, link->size, fp, "");
+ break;
+ case CO_NOCONVERT:
+ abort ();
+ break;
+ }
+ }
+
+ /* Output the rest of the file. */
+ if (p - fm->content < fm->length)
+ fwrite (p, 1, fm->length - (p - fm->content), fp);
+ fclose (fp);
+ wget_read_file_free (fm);
+
+ logprintf (LOG_VERBOSE, "%d-%d\n", to_file_count, to_url_count);
+}
+
+/* Construct and return a link that points from BASEFILE to LINKFILE.
+ Both files should be local file names, BASEFILE of the referrering
+ file, and LINKFILE of the referred file.
+
+ Examples:
+
+ cr("foo", "bar") -> "bar"
+ cr("A/foo", "A/bar") -> "bar"
+ cr("A/foo", "A/B/bar") -> "B/bar"
+ cr("A/X/foo", "A/Y/bar") -> "../Y/bar"
+ cr("X/", "Y/bar") -> "../Y/bar" (trailing slash does matter in BASE)
+
+ Both files should be absolute or relative, otherwise strange
+ results might ensue. The function makes no special efforts to
+ handle "." and ".." in links, so make sure they're not there
+ (e.g. using path_simplify). */
+
+static char *
+construct_relative (const char *basefile, const char *linkfile)
+{
+ char *link;
+ int basedirs;
+ const char *b, *l;
+ int i, start;
+
+ /* First, skip the initial directory components common to both
+ files. */
+ start = 0;
+ for (b = basefile, l = linkfile; *b == *l && *b != '\0'; ++b, ++l)
+ {
+ if (*b == '/')
+ start = (b - basefile) + 1;
+ }
+ basefile += start;
+ linkfile += start;
+
+ /* With common directories out of the way, the situation we have is
+ as follows:
+ b - b1/b2/[...]/bfile
+ l - l1/l2/[...]/lfile
+
+ The link we're constructing needs to be:
+ lnk - ../../l1/l2/[...]/lfile
+
+ Where the number of ".."'s equals the number of bN directory
+ components in B. */
+
+ /* Count the directory components in B. */
+ basedirs = 0;
+ for (b = basefile; *b; b++)
+ {
+ if (*b == '/')
+ ++basedirs;
+ }
+
+ if (!basedirs && (b = strpbrk (linkfile, "/:")) && *b == ':')
+ {
+ link = xmalloc (2 + strlen (linkfile) + 1);
+ memcpy (link, "./", 2);
+ strcpy (link + 2, linkfile);
+ }
+ else
+ {
+ /* Construct LINK as explained above. */
+ link = xmalloc (3 * basedirs + strlen (linkfile) + 1);
+ for (i = 0; i < basedirs; i++)
+ memcpy (link + 3 * i, "../", 3);
+ strcpy (link + 3 * i, linkfile);
+ }
+
+ return link;
+}
+
+/* Construct and return a "transparent proxy" URL
+ reflecting changes made by --adjust-extension to the file component
+ (i.e., "basename") of the original URL, but leaving the "dirname"
+ of the URL (protocol://hostname... portion) untouched.
+
+ Think: populating a squid cache via a recursive wget scrape, where
+ changing URLs to work locally with "file://..." is NOT desirable.
+
+ Example:
+
+ if
+ p = "//foo.com/bar.cgi?xyz"
+ and
+ link->local_name = "docroot/foo.com/bar.cgi?xyz.css"
+ then
+
+ new_construct_func(p, link);
+ will return
+ "//foo.com/bar.cgi?xyz.css"
+
+ Essentially, we do s/$(basename orig_url)/$(basename link->local_name)/
+*/
+static char *
+convert_basename (const char *p, const struct urlpos *link)
+{
+ int len = link->size;
+ char *url = NULL;
+ char *org_basename = NULL, *local_basename;
+ char *result = NULL;
+
+ if (*p == '"' || *p == '\'')
+ {
+ len -= 2;
+ p++;
+ }
+
+ url = xstrndup (p, len);
+
+ org_basename = strrchr (url, '/');
+ if (org_basename)
+ org_basename++;
+ else
+ org_basename = url;
+
+ local_basename = link->local_name ? strrchr (link->local_name, '/') : NULL;
+ if (local_basename)
+ local_basename++;
+ else
+ local_basename = url;
+
+ /*
+ * If the basenames differ, graft the adjusted basename (local_basename)
+ * onto the original URL.
+ */
+ if (strcmp (org_basename, local_basename) == 0)
+ result = url;
+ else
+ {
+ result = uri_merge (url, local_basename);
+ xfree (url);
+ }
+
+ return result;
+}
+
+/* Used by write_backup_file to remember which files have been
+ written. */
+static struct hash_table *converted_files;
+
+static void
+write_backup_file (const char *file, downloaded_file_t downloaded_file_return)
+{
+ /* Rather than just writing over the original .html file with the
+ converted version, save the former to *.orig. Note we only do
+ this for files we've _successfully_ downloaded, so we don't
+ clobber .orig files sitting around from previous invocations.
+ On VMS, use "_orig" instead of ".orig". See "wget.h". */
+
+ if (!converted_files)
+ converted_files = make_string_hash_table (0);
+
+ /* We can get called twice on the same URL thanks to the
+ convert_all_links() call in main. If we write the .orig file
+ each time in such a case, it'll end up containing the first-pass
+ conversion, not the original file. So, see if we've already been
+ called on this file. */
+ if (!string_set_contains (converted_files, file))
+ {
+ /* Construct the backup filename as the original name plus ".orig". */
+ char buf[1024];
+ size_t filename_len = strlen (file);
+ char *filename_plus_orig_suffix;
+
+ if (filename_len < sizeof (buf) - 5)
+ filename_plus_orig_suffix = buf;
+ else
+ filename_plus_orig_suffix = xmalloc (filename_len + 5 + 1);
+
+ /* TODO: hack this to work with css files */
+ if (downloaded_file_return == FILE_DOWNLOADED_AND_HTML_EXTENSION_ADDED)
+ {
+ /* Just write "orig" over "html". We need to do it this way
+ because when we're checking to see if we've downloaded the
+ file before (to see if we can skip downloading it), we don't
+ know if it's a text/html file. Therefore we don't know yet
+ at that stage that -E is going to cause us to tack on
+ ".html", so we need to compare vs. the original URL plus
+ ".orig", not the original URL plus ".html.orig". */
+ memcpy (filename_plus_orig_suffix, file, filename_len - 4);
+ memcpy (filename_plus_orig_suffix + filename_len - 4, "orig", 5);
+ }
+ else /* downloaded_file_return == FILE_DOWNLOADED_NORMALLY */
+ {
+ /* Append ".orig" to the name. */
+ memcpy (filename_plus_orig_suffix, file, filename_len);
+ strcpy (filename_plus_orig_suffix + filename_len, ORIG_SFX);
+ }
+
+ /* Rename <file> to <file>.orig before former gets written over. */
+ if (rename (file, filename_plus_orig_suffix) != 0)
+ logprintf (LOG_NOTQUIET, _("Cannot back up %s as %s: %s\n"),
+ file, filename_plus_orig_suffix, strerror (errno));
+
+ if (filename_plus_orig_suffix != buf)
+ xfree (filename_plus_orig_suffix);
+
+ /* Remember that we've already written a .orig backup for this file.
+ Note that we never free this memory since we need it till the
+ convert_all_links() call, which is one of the last things the
+ program does before terminating. BTW, I'm not sure if it would be
+ safe to just set 'converted_file_ptr->string' to 'file' below,
+ rather than making a copy of the string... Another note is that I
+ thought I could just add a field to the urlpos structure saying
+ that we'd written a .orig file for this URL, but that didn't work,
+ so I had to make this separate list.
+ -- Dan Harkless <wget@harkless.org>
+
+ This [adding a field to the urlpos structure] didn't work
+ because convert_file() is called from convert_all_links at
+ the end of the retrieval with a freshly built new urlpos
+ list.
+ -- Hrvoje Niksic <hniksic@xemacs.org>
+ */
+ string_set_add (converted_files, file);
+ }
+}
+
+static bool find_fragment (const char *, int, const char **, const char **);
+
+/* Replace a string with NEW_TEXT. Ignore quoting. */
+static const char *
+replace_plain (const char *p, int size, FILE *fp, const char *new_text)
+{
+ fputs (new_text, fp);
+ p += size;
+ return p;
+}
+
+/* Replace an attribute's original text with NEW_TEXT. */
+
+static const char *
+replace_attr (const char *p, int size, FILE *fp, const char *new_text)
+{
+ bool quote_flag = false;
+ char quote_char = '\"'; /* use "..." for quoting, unless the
+ original value is quoted, in which
+ case reuse its quoting char. */
+ const char *frag_beg, *frag_end;
+
+ /* Structure of our string is:
+ "...old-contents..."
+ <--- size ---> (with quotes)
+ OR:
+ ...old-contents...
+ <--- size --> (no quotes) */
+
+ if (*p == '\"' || *p == '\'')
+ {
+ quote_char = *p;
+ quote_flag = true;
+ ++p;
+ size -= 2; /* disregard opening and closing quote */
+ }
+ putc (quote_char, fp);
+ fputs (new_text, fp);
+
+ /* Look for fragment identifier, if any. */
+ if (find_fragment (p, size, &frag_beg, &frag_end))
+ fwrite (frag_beg, 1, frag_end - frag_beg, fp);
+ p += size;
+ if (quote_flag)
+ ++p;
+ putc (quote_char, fp);
+
+ return p;
+}
+
+/* The same as REPLACE_ATTR, but used when replacing
+ <meta http-equiv=refresh content="new_text"> because we need to
+ append "timeout_value; URL=" before the next_text. */
+
+static const char *
+replace_attr_refresh_hack (const char *p, int size, FILE *fp,
+ const char *new_text, int timeout)
+{
+ /* "0; URL=..." */
+ char new_with_timeout[1024];
+
+ if (((unsigned) snprintf (
+ new_with_timeout, sizeof (new_with_timeout),
+ "%d; URL=%s", timeout, new_text)) >= sizeof (new_with_timeout))
+ {
+ // very unlikely fallback using heap memory
+ char *tmp = aprintf("%d; URL=%s", timeout, new_text);
+ const char *res = replace_attr (p, size, fp, tmp);
+ xfree (tmp);
+ return res;
+ }
+
+ return replace_attr (p, size, fp, new_with_timeout);
+}
+
+/* Find the first occurrence of '#' in [BEG, BEG+SIZE) that is not
+ preceded by '&'. If the character is not found, return zero. If
+ the character is found, return true and set BP and EP to point to
+ the beginning and end of the region.
+
+ This is used for finding the fragment indentifiers in URLs. */
+
+static bool
+find_fragment (const char *beg, int size, const char **bp, const char **ep)
+{
+ const char *end = beg + size;
+ bool saw_amp = false;
+ for (; beg < end; beg++)
+ {
+ switch (*beg)
+ {
+ case '&':
+ saw_amp = true;
+ break;
+ case '#':
+ if (!saw_amp)
+ {
+ *bp = beg;
+ *ep = end;
+ return true;
+ }
+ /* fallthrough */
+ default:
+ saw_amp = false;
+ }
+ }
+ return false;
+}
+
+/* Quote FILE for use as local reference to an HTML file.
+
+ We quote ? as %3F to avoid passing part of the file name as the
+ parameter when browsing the converted file through HTTP. However,
+ it is safe to do this only when `--adjust-extension' is turned on.
+ This is because converting "index.html?foo=bar" to
+ "index.html%3Ffoo=bar" would break local browsing, as the latter
+ isn't even recognized as an HTML file! However, converting
+ "index.html?foo=bar.html" to "index.html%3Ffoo=bar.html" should be
+ safe for both local and HTTP-served browsing.
+
+ We always quote "#" as "%23", "%" as "%25" and ";" as "%3B"
+ because those characters have special meanings in URLs. */
+
+static char *
+local_quote_string (const char *file, bool no_html_quote)
+{
+ const char *from;
+ char *newname, *to, *res;
+ char buf[1024];
+ size_t tolen;
+
+ char *any = strpbrk (file, "?#%;");
+ if (!any)
+ return no_html_quote ? strdup (file) : html_quote_string (file);
+
+ /* Allocate space assuming the worst-case scenario, each character
+ having to be quoted. */
+ tolen = 3 * strlen (file);
+ if (tolen < sizeof (buf))
+ to = newname = buf;
+ else
+ to = newname = xmalloc (tolen + 1);
+
+ for (from = file; *from; from++)
+ switch (*from)
+ {
+ case '%':
+ *to++ = '%';
+ *to++ = '2';
+ *to++ = '5';
+ break;
+ case '#':
+ *to++ = '%';
+ *to++ = '2';
+ *to++ = '3';
+ break;
+ case ';':
+ *to++ = '%';
+ *to++ = '3';
+ *to++ = 'B';
+ break;
+ case '?':
+ if (opt.adjust_extension)
+ {
+ *to++ = '%';
+ *to++ = '3';
+ *to++ = 'F';
+ break;
+ }
+ /* fallthrough */
+ default:
+ *to++ = *from;
+ }
+ *to = '\0';
+
+ if (newname == buf)
+ return no_html_quote ? strdup (newname) : html_quote_string (newname);
+
+ if (no_html_quote)
+ return newname;
+
+ res = html_quote_string (newname);
+ xfree (newname);
+ return res;
+}
+
+/* Book-keeping code for dl_file_url_map, dl_url_file_map,
+ downloaded_html_list, and downloaded_html_set. Other code calls
+ these functions to let us know that a file has been downloaded. */
+
+#define ENSURE_TABLES_EXIST do { \
+ if (!dl_file_url_map) \
+ dl_file_url_map = make_string_hash_table (0); \
+ if (!dl_url_file_map) \
+ dl_url_file_map = make_string_hash_table (0); \
+} while (0)
+
+/* Return true if S1 and S2 are the same, except for "/index.html".
+ The three cases in which it returns one are (substitute any
+ substring for "foo"):
+
+ m("foo/index.html", "foo/") ==> 1
+ m("foo/", "foo/index.html") ==> 1
+ m("foo", "foo/index.html") ==> 1
+ m("foo", "foo/" ==> 1
+ m("foo", "foo") ==> 1 */
+
+static bool
+match_except_index (const char *s1, const char *s2)
+{
+ int i;
+ const char *lng;
+
+ /* Skip common substring. */
+ for (i = 0; *s1 && *s2 && *s1 == *s2; s1++, s2++, i++)
+ ;
+ if (i == 0)
+ /* Strings differ at the very beginning -- bail out. We need to
+ check this explicitly to avoid `lng - 1' reading outside the
+ array. */
+ return false;
+
+ if (!*s1 && !*s2)
+ /* Both strings hit EOF -- strings are equal. */
+ return true;
+ else if (*s1 && *s2)
+ /* Strings are randomly different, e.g. "/foo/bar" and "/foo/qux". */
+ return false;
+ else if (*s1)
+ /* S1 is the longer one. */
+ lng = s1;
+ else
+ /* S2 is the longer one. */
+ lng = s2;
+
+ /* foo */ /* foo/ */
+ /* foo/index.html */ /* or */ /* foo/index.html */
+ /* ^ */ /* ^ */
+
+ if (*lng != '/')
+ /* The right-hand case. */
+ --lng;
+
+ if (*lng == '/' && *(lng + 1) == '\0')
+ /* foo */
+ /* foo/ */
+ return true;
+
+ return 0 == strcmp (lng, "/index.html");
+}
+
+static int
+dissociate_urls_from_file_mapper (void *key, void *value, void *arg)
+{
+ char *mapping_url = (char *)key;
+ char *mapping_file = (char *)value;
+ char *file = (char *)arg;
+
+ if (0 == strcmp (mapping_file, file))
+ {
+ hash_table_remove (dl_url_file_map, mapping_url);
+ xfree (mapping_url);
+ xfree (mapping_file);
+ }
+
+ /* Continue mapping. */
+ return 0;
+}
+
+/* Remove all associations from various URLs to FILE from dl_url_file_map. */
+
+static void
+dissociate_urls_from_file (const char *file)
+{
+ /* Can't use hash_table_iter_* because the table mutates while mapping. */
+ hash_table_for_each (dl_url_file_map, dissociate_urls_from_file_mapper,
+ (char *) file);
+}
+
+/* Register that URL has been successfully downloaded to FILE. This
+ is used by the link conversion code to convert references to URLs
+ to references to local files. It is also being used to check if a
+ URL has already been downloaded. */
+
+void
+register_download (const char *url, const char *file)
+{
+ char *old_file, *old_url;
+
+ ENSURE_TABLES_EXIST;
+
+ /* With some forms of retrieval, it is possible, although not likely
+ or particularly desirable. If both are downloaded, the second
+ download will override the first one. When that happens,
+ dissociate the old file name from the URL. */
+
+ if (hash_table_get_pair (dl_file_url_map, file, &old_file, &old_url))
+ {
+ if (0 == strcmp (url, old_url))
+ /* We have somehow managed to download the same URL twice.
+ Nothing to do. */
+ return;
+
+ if (match_except_index (url, old_url)
+ && !hash_table_contains (dl_url_file_map, url))
+ /* The two URLs differ only in the "index.html" ending. For
+ example, one is "http://www.server.com/", and the other is
+ "http://www.server.com/index.html". Don't remove the old
+ one, just add the new one as a non-canonical entry. */
+ goto url_only;
+
+ hash_table_remove (dl_file_url_map, file);
+ xfree (old_file);
+ xfree (old_url);
+
+ /* Remove all the URLs that point to this file. Yes, there can
+ be more than one such URL, because we store redirections as
+ multiple entries in dl_url_file_map. For example, if URL1
+ redirects to URL2 which gets downloaded to FILE, we map both
+ URL1 and URL2 to FILE in dl_url_file_map. (dl_file_url_map
+ only points to URL2.) When another URL gets loaded to FILE,
+ we want both URL1 and URL2 dissociated from it.
+
+ This is a relatively expensive operation because it performs
+ a linear search of the whole hash table, but it should be
+ called very rarely, only when two URLs resolve to the same
+ file name, *and* the "<file>.1" extensions are turned off.
+ In other words, almost never. */
+ dissociate_urls_from_file (file);
+ }
+
+ hash_table_put (dl_file_url_map, xstrdup (file), xstrdup (url));
+
+ url_only:
+ /* A URL->FILE mapping is not possible without a FILE->URL mapping.
+ If the latter were present, it should have been removed by the
+ above `if'. So we could write:
+
+ assert (!hash_table_contains (dl_url_file_map, url));
+
+ The above is correct when running in recursive mode where the
+ same URL always resolves to the same file. But if you do
+ something like:
+
+ wget URL URL
+
+ then the first URL will resolve to "FILE", and the other to
+ "FILE.1". In that case, FILE.1 will not be found in
+ dl_file_url_map, but URL will still point to FILE in
+ dl_url_file_map. */
+ if (hash_table_get_pair (dl_url_file_map, url, &old_url, &old_file))
+ {
+ hash_table_remove (dl_url_file_map, url);
+ xfree (old_url);
+ xfree (old_file);
+ }
+
+ hash_table_put (dl_url_file_map, xstrdup (url), xstrdup (file));
+}
+
+/* Register that FROM has been redirected to "TO". This assumes that TO
+ is successfully downloaded and already registered using
+ register_download() above. */
+
+void
+register_redirection (const char *from, const char *to)
+{
+ char *file;
+
+ ENSURE_TABLES_EXIST;
+
+ file = hash_table_get (dl_url_file_map, to);
+ assert (file != NULL);
+ if (!hash_table_contains (dl_url_file_map, from))
+ hash_table_put (dl_url_file_map, xstrdup (from), xstrdup (file));
+}
+
+/* Register that the file has been deleted. */
+
+void
+register_delete_file (const char *file)
+{
+ char *old_url, *old_file;
+
+ ENSURE_TABLES_EXIST;
+
+ if (!hash_table_get_pair (dl_file_url_map, file, &old_file, &old_url))
+ return;
+
+ hash_table_remove (dl_file_url_map, file);
+ xfree (old_file);
+ xfree (old_url);
+ dissociate_urls_from_file (file);
+}
+
+/* Register that FILE is an HTML file that has been downloaded. */
+
+void
+register_html (const char *file)
+{
+ if (!downloaded_html_set)
+ downloaded_html_set = make_string_hash_table (0);
+ string_set_add (downloaded_html_set, file);
+}
+
+/* Register that FILE is a CSS file that has been downloaded. */
+
+void
+register_css (const char *file)
+{
+ if (!downloaded_css_set)
+ downloaded_css_set = make_string_hash_table (0);
+ string_set_add (downloaded_css_set, file);
+}
+
+/* Cleanup the data structures associated with this file. */
+
+#if defined DEBUG_MALLOC || defined TESTING
+static void downloaded_files_free (void);
+
+void
+convert_cleanup (void)
+{
+ if (dl_file_url_map)
+ {
+ free_keys_and_values (dl_file_url_map);
+ hash_table_destroy (dl_file_url_map);
+ dl_file_url_map = NULL;
+ }
+ if (dl_url_file_map)
+ {
+ free_keys_and_values (dl_url_file_map);
+ hash_table_destroy (dl_url_file_map);
+ dl_url_file_map = NULL;
+ }
+ if (downloaded_html_set)
+ string_set_free (downloaded_html_set);
+ if (downloaded_css_set)
+ string_set_free (downloaded_css_set);
+ downloaded_files_free ();
+ if (converted_files)
+ string_set_free (converted_files);
+}
+#endif
+
+/* Book-keeping code for downloaded files that enables extension
+ hacks. */
+
+/* This table should really be merged with dl_file_url_map and
+ downloaded_html_files. This was originally a list, but I changed
+ it to a hash table because it was actually taking a lot of time to
+ find things in it. */
+
+static struct hash_table *downloaded_files_hash;
+
+/* We're storing "modes" of type downloaded_file_t in the hash table.
+ However, our hash tables only accept pointers for keys and values.
+ So when we need a pointer, we use the address of a
+ downloaded_file_t variable of static storage. */
+
+static downloaded_file_t *
+downloaded_mode_to_ptr (downloaded_file_t mode)
+{
+ static downloaded_file_t
+ v1 = FILE_NOT_ALREADY_DOWNLOADED,
+ v2 = FILE_DOWNLOADED_NORMALLY,
+ v3 = FILE_DOWNLOADED_AND_HTML_EXTENSION_ADDED,
+ v4 = CHECK_FOR_FILE;
+
+ switch (mode)
+ {
+ case FILE_NOT_ALREADY_DOWNLOADED:
+ return &v1;
+ case FILE_DOWNLOADED_NORMALLY:
+ return &v2;
+ case FILE_DOWNLOADED_AND_HTML_EXTENSION_ADDED:
+ return &v3;
+ case CHECK_FOR_FILE:
+ return &v4;
+ }
+ return NULL;
+}
+
+/* Remembers which files have been downloaded. In the standard case,
+ should be called with mode == FILE_DOWNLOADED_NORMALLY for each
+ file we actually download successfully (i.e. not for ones we have
+ failures on or that we skip due to -N).
+
+ When we've downloaded a file and tacked on a ".html" extension due
+ to -E, call this function with
+ FILE_DOWNLOADED_AND_HTML_EXTENSION_ADDED rather than
+ FILE_DOWNLOADED_NORMALLY.
+
+ If you just want to check if a file has been previously added
+ without adding it, call with mode == CHECK_FOR_FILE. Please be
+ sure to call this function with local filenames, not remote
+ URLs. */
+
+downloaded_file_t
+downloaded_file (downloaded_file_t mode, const char *file)
+{
+ downloaded_file_t *ptr;
+
+ if (mode == CHECK_FOR_FILE)
+ {
+ if (!downloaded_files_hash)
+ return FILE_NOT_ALREADY_DOWNLOADED;
+ ptr = hash_table_get (downloaded_files_hash, file);
+ if (!ptr)
+ return FILE_NOT_ALREADY_DOWNLOADED;
+ return *ptr;
+ }
+
+ if (!downloaded_files_hash)
+ downloaded_files_hash = make_string_hash_table (0);
+
+ ptr = hash_table_get (downloaded_files_hash, file);
+ if (ptr)
+ return *ptr;
+
+ ptr = downloaded_mode_to_ptr (mode);
+ hash_table_put (downloaded_files_hash, xstrdup (file), ptr);
+
+ return FILE_NOT_ALREADY_DOWNLOADED;
+}
+
+#if defined DEBUG_MALLOC || defined TESTING
+static void
+downloaded_files_free (void)
+{
+ if (downloaded_files_hash)
+ {
+ hash_table_iterator iter;
+ for (hash_table_iterate (downloaded_files_hash, &iter);
+ hash_table_iter_next (&iter);
+ )
+ xfree (iter.key);
+ hash_table_destroy (downloaded_files_hash);
+ downloaded_files_hash = NULL;
+ }
+}
+#endif
+
+/* The function returns the pointer to the malloc-ed quoted version of
+ string s. It will recognize and quote numeric and special graphic
+ entities, as per RFC1866:
+
+ `&' -> `&amp;'
+ `<' -> `&lt;'
+ `>' -> `&gt;'
+ `"' -> `&quot;'
+ SP -> `&#32;'
+
+ No other entities are recognized or replaced. */
+char *
+html_quote_string (const char *s)
+{
+ const char *b = s;
+ char *p, *res;
+ int i;
+
+ /* Pass through the string, and count the new size. */
+ for (i = 0; *s; s++, i++)
+ {
+ if (*s == '&')
+ i += 4; /* `amp;' */
+ else if (*s == '<' || *s == '>')
+ i += 3; /* `lt;' and `gt;' */
+ else if (*s == '\"')
+ i += 5; /* `quot;' */
+ else if (*s == ' ')
+ i += 4; /* #32; */
+ }
+ res = xmalloc (i + 1);
+ s = b;
+ for (p = res; *s; s++)
+ {
+ switch (*s)
+ {
+ case '&':
+ *p++ = '&';
+ *p++ = 'a';
+ *p++ = 'm';
+ *p++ = 'p';
+ *p++ = ';';
+ break;
+ case '<': case '>':
+ *p++ = '&';
+ *p++ = (*s == '<' ? 'l' : 'g');
+ *p++ = 't';
+ *p++ = ';';
+ break;
+ case '\"':
+ *p++ = '&';
+ *p++ = 'q';
+ *p++ = 'u';
+ *p++ = 'o';
+ *p++ = 't';
+ *p++ = ';';
+ break;
+ case ' ':
+ *p++ = '&';
+ *p++ = '#';
+ *p++ = '3';
+ *p++ = '2';
+ *p++ = ';';
+ break;
+ default:
+ *p++ = *s;
+ }
+ }
+ *p = '\0';
+ return res;
+}
+
+/*
+ * vim: et ts=2 sw=2
+ */
diff --git a/src/convert.h b/src/convert.h
new file mode 100644
index 0000000..531afbd
--- /dev/null
+++ b/src/convert.h
@@ -0,0 +1,115 @@
+/* Declarations for convert.c
+ Copyright (C) 2003-2006, 2009-2011, 2015, 2018-2020 Free Software
+ Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef CONVERT_H
+#define CONVERT_H
+
+struct hash_table; /* forward decl */
+extern struct hash_table *dl_url_file_map;
+extern struct hash_table *downloaded_html_set;
+extern struct hash_table *downloaded_css_set;
+
+enum convert_options {
+ CO_NOCONVERT = 0, /* don't convert this URL */
+ CO_CONVERT_TO_RELATIVE, /* convert to relative, e.g. to
+ "../../otherdir/foo.gif" */
+ CO_CONVERT_BASENAME_ONLY, /* convert the file portion only (basename)
+ leaving the rest of the URL unchanged */
+ CO_CONVERT_TO_COMPLETE, /* convert to absolute, e.g. to
+ "http://orighost/somedir/bar.jpg". */
+ CO_NULLIFY_BASE /* change to empty string. */
+};
+
+struct url;
+
+/* A structure that defines the whereabouts of a URL, i.e. its
+ position in an HTML document, etc. */
+
+struct urlpos {
+ struct url *url; /* the URL of the link, after it has
+ been merged with the base */
+ char *local_name; /* local file to which it was saved
+ (used by convert_links) */
+
+ /* reserved for special links such as <base href="..."> which are
+ used when converting links, but ignored when downloading. */
+ unsigned int ignore_when_downloading :1;
+
+ /* Information about the original link: */
+
+ unsigned int link_relative_p :1; /* the link was relative */
+ unsigned int link_complete_p :1; /* the link was complete (had host name) */
+ unsigned int link_base_p :1; /* the url came from <base href=...> */
+ unsigned int link_inline_p :1; /* needed to render the page */
+ unsigned int link_css_p :1; /* the url came from CSS */
+ unsigned int link_noquote_html_p :1; /* from HTML, but doesn't need " */
+ unsigned int link_expect_html :1; /* expected to contain HTML */
+ unsigned int link_expect_css :1; /* expected to contain CSS */
+
+ unsigned int link_refresh_p :1; /* link was received from
+ <meta http-equiv=refresh content=...> */
+ int refresh_timeout; /* for reconstructing the refresh. */
+
+ /* Conversion requirements: */
+ enum convert_options convert; /* is conversion required? */
+
+ /* URL's position in the buffer. */
+ int pos, size;
+
+ struct urlpos *next; /* next list element */
+};
+
+/* downloaded_file() takes a parameter of this type and returns this type. */
+typedef enum
+{
+ /* Return enumerators: */
+ FILE_NOT_ALREADY_DOWNLOADED = 0,
+
+ /* Return / parameter enumerators: */
+ FILE_DOWNLOADED_NORMALLY,
+ FILE_DOWNLOADED_AND_HTML_EXTENSION_ADDED,
+
+ /* Parameter enumerators: */
+ CHECK_FOR_FILE
+} downloaded_file_t;
+
+downloaded_file_t downloaded_file (downloaded_file_t, const char *);
+
+void register_download (const char *, const char *);
+void register_redirection (const char *, const char *);
+void register_html (const char *);
+void register_css (const char *);
+void register_delete_file (const char *);
+void convert_all_links (void);
+void convert_cleanup (void);
+
+char *html_quote_string (const char *);
+
+#endif /* CONVERT_H */
diff --git a/src/cookies.c b/src/cookies.c
new file mode 100644
index 0000000..6ddb931
--- /dev/null
+++ b/src/cookies.c
@@ -0,0 +1,1539 @@
+/* Support for cookies.
+ Copyright (C) 2001-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at
+your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+/* Written by Hrvoje Niksic. Parts are loosely inspired by the
+ cookie patch submitted by Tomasz Wegrzanowski.
+
+ This implements the client-side cookie support, as specified
+ (loosely) by Netscape's "preliminary specification", currently
+ available at:
+
+ http://wp.netscape.com/newsref/std/cookie_spec.html
+
+ rfc2109 is not supported because of its incompatibilities with the
+ above widely-used specification. rfc2965 is entirely ignored,
+ since popular client software doesn't implement it, and even the
+ sites that do send Set-Cookie2 also emit Set-Cookie for
+ compatibility. */
+
+#include "wget.h"
+
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <errno.h>
+#include <time.h>
+#ifdef HAVE_LIBPSL
+# include <libpsl.h>
+#endif
+#include "utils.h"
+#include "hash.h"
+#include "cookies.h"
+#include "http.h" /* for http_atotm */
+#include "c-strcase.h"
+
+
+/* Declarations of `struct cookie' and the most basic functions. */
+
+/* Cookie jar serves as cookie storage and a means of retrieving
+ cookies efficiently. All cookies with the same domain are stored
+ in a linked list called "chain". A cookie chain can be reached by
+ looking up the domain in the cookie jar's chains_by_domain table.
+
+ For example, to reach all the cookies under google.com, one must
+ execute hash_table_get(jar->chains_by_domain, "google.com"). Of
+ course, when sending a cookie to `www.google.com', one must search
+ for cookies that belong to either `www.google.com' or `google.com'
+ -- but the point is that the code doesn't need to go through *all*
+ the cookies. */
+
+struct cookie_jar {
+ /* Cookie chains indexed by domain. */
+ struct hash_table *chains;
+
+ int cookie_count; /* number of cookies in the jar. */
+};
+
+/* Value set by entry point functions, so that the low-level
+ routines don't need to call time() all the time. */
+static time_t cookies_now;
+
+struct cookie_jar *
+cookie_jar_new (void)
+{
+ struct cookie_jar *jar = xnew (struct cookie_jar);
+ jar->chains = make_nocase_string_hash_table (0);
+ jar->cookie_count = 0;
+ return jar;
+}
+
+struct cookie {
+ char *domain; /* domain of the cookie */
+ int port; /* port number */
+ char *path; /* path prefix of the cookie */
+
+ unsigned discard_requested :1;/* whether cookie was created to
+ request discarding another
+ cookie. */
+
+ unsigned secure :1; /* whether cookie should be
+ transmitted over non-https
+ connections. */
+ unsigned domain_exact :1; /* whether DOMAIN must match as a
+ whole. */
+
+ unsigned permanent :1; /* whether the cookie should outlive
+ the session. */
+ time_t expiry_time; /* time when the cookie expires, 0
+ means undetermined. */
+
+ char *attr; /* cookie attribute name */
+ char *value; /* cookie attribute value */
+
+ struct cookie *next; /* used for chaining of cookies in the
+ same domain. */
+};
+
+#define PORT_ANY (-1)
+
+/* Allocate and return a new, empty cookie structure. */
+
+static struct cookie *
+cookie_new (void)
+{
+ struct cookie *cookie = xnew0 (struct cookie);
+
+ /* Both cookie->permanent and cookie->expiry_time are now 0. This
+ means that the cookie doesn't expire, but is only valid for this
+ session (i.e. not written out to disk). */
+
+ cookie->port = PORT_ANY;
+ return cookie;
+}
+
+/* Non-zero if the cookie has expired. Assumes cookies_now has been
+ set by one of the entry point functions. */
+
+static bool
+cookie_expired_p (const struct cookie *c)
+{
+ return c->expiry_time != 0 && c->expiry_time < cookies_now;
+}
+
+/* Deallocate COOKIE and its components. */
+
+static void
+delete_cookie (struct cookie *cookie)
+{
+ xfree (cookie->domain);
+ xfree (cookie->path);
+ xfree (cookie->attr);
+ xfree (cookie->value);
+ xfree (cookie);
+}
+
+/* Functions for storing cookies.
+
+ All cookies can be reached beginning with jar->chains. The key in
+ that table is the domain name, and the value is a linked list of
+ all cookies from that domain. Every new cookie is placed on the
+ head of the list. */
+
+/* Find and return a cookie in JAR whose domain, path, and attribute
+ name correspond to COOKIE. If found, PREVPTR will point to the
+ location of the cookie previous in chain, or NULL if the found
+ cookie is the head of a chain.
+
+ If no matching cookie is found, return NULL. */
+
+static struct cookie *
+find_matching_cookie (struct cookie_jar *jar, struct cookie *cookie,
+ struct cookie **prevptr)
+{
+ struct cookie *chain, *prev;
+
+ chain = hash_table_get (jar->chains, cookie->domain);
+ if (!chain)
+ goto nomatch;
+
+ prev = NULL;
+ for (; chain; prev = chain, chain = chain->next)
+ if (0 == strcmp (cookie->path, chain->path)
+ && 0 == strcmp (cookie->attr, chain->attr)
+ && cookie->port == chain->port)
+ {
+ *prevptr = prev;
+ return chain;
+ }
+
+ nomatch:
+ *prevptr = NULL;
+ return NULL;
+}
+
+/* Store COOKIE to the jar.
+
+ This is done by placing COOKIE at the head of its chain. However,
+ if COOKIE matches a cookie already in memory, as determined by
+ find_matching_cookie, the old cookie is unlinked and destroyed.
+
+ The key of each chain's hash table entry is allocated only the
+ first time; next hash_table_put's reuse the same key. */
+
+static void
+store_cookie (struct cookie_jar *jar, struct cookie *cookie)
+{
+ struct cookie *chain_head;
+ char *chain_key;
+
+ if (hash_table_get_pair (jar->chains, cookie->domain,
+ &chain_key, &chain_head))
+ {
+ /* A chain of cookies in this domain already exists. Check for
+ duplicates -- if an extant cookie exactly matches our domain,
+ port, path, and name, replace it. */
+ struct cookie *prev;
+ struct cookie *victim = find_matching_cookie (jar, cookie, &prev);
+
+ if (victim)
+ {
+ /* Remove VICTIM from the chain. COOKIE will be placed at
+ the head. */
+ if (prev)
+ {
+ prev->next = victim->next;
+ cookie->next = chain_head;
+ }
+ else
+ {
+ /* prev is NULL; apparently VICTIM was at the head of
+ the chain. This place will be taken by COOKIE, so
+ all we need to do is: */
+ cookie->next = victim->next;
+ }
+ delete_cookie (victim);
+ --jar->cookie_count;
+ DEBUGP (("Deleted old cookie (to be replaced.)\n"));
+ }
+ else
+ cookie->next = chain_head;
+ }
+ else
+ {
+ /* We are now creating the chain. Use a copy of cookie->domain
+ as the key for the life-time of the chain. Using
+ cookie->domain would be unsafe because the life-time of the
+ chain may exceed the life-time of the cookie. (Cookies may
+ be deleted from the chain by this very function.) */
+ cookie->next = NULL;
+ chain_key = xstrdup (cookie->domain);
+ }
+
+ hash_table_put (jar->chains, chain_key, cookie);
+ ++jar->cookie_count;
+
+ IF_DEBUG
+ {
+ time_t exptime = cookie->expiry_time;
+ DEBUGP (("\nStored cookie %s %d%s %s <%s> <%s> [expiry %s] %s %s\n",
+ cookie->domain, cookie->port,
+ cookie->port == PORT_ANY ? " (ANY)" : "",
+ cookie->path,
+ cookie->permanent ? "permanent" : "session",
+ cookie->secure ? "secure" : "insecure",
+ cookie->expiry_time ? datetime_str (exptime) : "none",
+ cookie->attr, cookie->value));
+ }
+}
+
+/* Discard a cookie matching COOKIE's domain, port, path, and
+ attribute name. This gets called when we encounter a cookie whose
+ expiry date is in the past, or whose max-age is set to 0. The
+ former corresponds to netscape cookie spec, while the latter is
+ specified by rfc2109. */
+
+static void
+discard_matching_cookie (struct cookie_jar *jar, struct cookie *cookie)
+{
+ struct cookie *prev, *victim;
+
+ if (!hash_table_count (jar->chains))
+ /* No elements == nothing to discard. */
+ return;
+
+ victim = find_matching_cookie (jar, cookie, &prev);
+ if (victim)
+ {
+ if (prev)
+ /* Simply unchain the victim. */
+ prev->next = victim->next;
+ else
+ {
+ /* VICTIM was head of its chain. We need to place a new
+ cookie at the head. */
+ char *chain_key = NULL;
+ int res;
+
+ res = hash_table_get_pair (jar->chains, victim->domain,
+ &chain_key, NULL);
+
+ if (res == 0)
+ {
+ logprintf (LOG_VERBOSE, _("Unable to get cookie for %s\n"),
+ victim->domain);
+ }
+ if (!victim->next)
+ {
+ /* VICTIM was the only cookie in the chain. Destroy the
+ chain and deallocate the chain key. */
+ hash_table_remove (jar->chains, victim->domain);
+ xfree (chain_key);
+ }
+ else
+ hash_table_put (jar->chains, chain_key, victim->next);
+ }
+ delete_cookie (victim);
+ DEBUGP (("Discarded old cookie.\n"));
+ }
+}
+
+/* Functions for parsing the `Set-Cookie' header, and creating new
+ cookies from the wire. */
+
+#define TOKEN_IS(token, string_literal) \
+ BOUNDED_EQUAL_NO_CASE (token.b, token.e, string_literal)
+
+#define TOKEN_NON_EMPTY(token) (token.b != NULL && token.b != token.e)
+
+/* Parse the contents of the `Set-Cookie' header. The header looks
+ like this:
+
+ name1=value1; name2=value2; ...
+
+ Trailing semicolon is optional; spaces are allowed between all
+ tokens. Additionally, values may be quoted.
+
+ A new cookie is returned upon success, NULL otherwise.
+
+ The first name-value pair will be used to set the cookie's
+ attribute name and value. Subsequent parameters will be checked
+ against field names such as `domain', `path', etc. Recognized
+ fields will be parsed and the corresponding members of COOKIE
+ filled. */
+
+static struct cookie *
+parse_set_cookie (const char *set_cookie, bool silent)
+{
+ const char *ptr = set_cookie;
+ struct cookie *cookie = cookie_new ();
+ param_token name, value;
+
+ if (!extract_param (&ptr, &name, &value, ';', NULL))
+ goto error;
+ if (!value.b)
+ goto error;
+
+ /* If the value is quoted, do not modify it. */
+ if (*(value.b - 1) == '"')
+ value.b--;
+ if (*value.e == '"')
+ value.e++;
+
+ cookie->attr = strdupdelim (name.b, name.e);
+ cookie->value = strdupdelim (value.b, value.e);
+
+ while (extract_param (&ptr, &name, &value, ';', NULL))
+ {
+ if (TOKEN_IS (name, "domain"))
+ {
+ if (!TOKEN_NON_EMPTY (value))
+ goto error;
+ xfree (cookie->domain);
+ /* Strictly speaking, we should set cookie->domain_exact if the
+ domain doesn't begin with a dot. But many sites set the
+ domain to "foo.com" and expect "subhost.foo.com" to get the
+ cookie, and it apparently works in browsers. */
+ if (*value.b == '.')
+ ++value.b;
+ cookie->domain = strdupdelim (value.b, value.e);
+ }
+ else if (TOKEN_IS (name, "path"))
+ {
+ if (!TOKEN_NON_EMPTY (value))
+ goto error;
+ xfree (cookie->path);
+ cookie->path = strdupdelim (value.b, value.e);
+ }
+ else if (TOKEN_IS (name, "expires"))
+ {
+ char value_copy[128];
+ size_t value_len = value.e - value.b;
+ time_t expires;
+
+ if (!TOKEN_NON_EMPTY (value) || value_len >= sizeof (value_copy))
+ goto error;
+
+ memcpy (value_copy, value.b, value_len);
+ value_copy[value_len] = 0;
+
+ /* Check if expiration spec is valid.
+ If not, assume default (cookie doesn't expire, but valid only for
+ this session.) */
+ expires = http_atotm (value_copy);
+ if (expires != (time_t) -1)
+ {
+ cookie->permanent = 1;
+ cookie->expiry_time = expires;
+ /* According to netscape's specification, expiry time in
+ the past means that discarding of a matching cookie
+ is requested. */
+ if (cookie->expiry_time < cookies_now)
+ cookie->discard_requested = 1;
+ }
+ }
+ else if (TOKEN_IS (name, "max-age"))
+ {
+ double maxage = -1;
+ char value_copy[32];
+ size_t value_len = value.e - value.b;
+
+ if (!TOKEN_NON_EMPTY (value) || value_len >= sizeof (value_copy))
+ goto error;
+
+ memcpy (value_copy, value.b, value_len);
+ value_copy[value_len] = 0;
+
+ sscanf (value_copy, "%lf", &maxage);
+ if (maxage == -1)
+ /* something went wrong. */
+ goto error;
+ cookie->permanent = 1;
+ cookie->expiry_time = cookies_now + (time_t) maxage;
+
+ /* According to rfc2109, a cookie with max-age of 0 means that
+ discarding of a matching cookie is requested. */
+ if (maxage == 0)
+ cookie->discard_requested = 1;
+ }
+ else if (TOKEN_IS (name, "secure"))
+ {
+ /* ignore value completely */
+ cookie->secure = 1;
+ }
+ /* else: Ignore unrecognized attribute. */
+ }
+ if (*ptr)
+ /* extract_param has encountered a syntax error */
+ goto error;
+
+ /* The cookie has been successfully constructed; return it. */
+ return cookie;
+
+ error:
+ if (!silent)
+ logprintf (LOG_NOTQUIET,
+ _("Syntax error in Set-Cookie: %s at position %d.\n"),
+ quotearg_style (escape_quoting_style, set_cookie),
+ (int) (ptr - set_cookie));
+ delete_cookie (cookie);
+ return NULL;
+}
+
+#undef TOKEN_IS
+#undef TOKEN_NON_EMPTY
+
+/* Sanity checks. These are important, otherwise it is possible for
+ mailcious attackers to destroy important cookie information and/or
+ violate your privacy. */
+
+
+#define REQUIRE_DIGITS(p) do { \
+ if (!c_isdigit (*p)) \
+ return false; \
+ for (++p; c_isdigit (*p); p++) \
+ ; \
+} while (0)
+
+#define REQUIRE_DOT(p) do { \
+ if (*p++ != '.') \
+ return false; \
+} while (0)
+
+/* Check whether ADDR matches <digits>.<digits>.<digits>.<digits>.
+
+ We don't want to call network functions like inet_addr() because
+ all we need is a check, preferably one that is small, fast, and
+ well-defined. */
+
+static bool
+numeric_address_p (const char *addr)
+{
+ const char *p = addr;
+
+ REQUIRE_DIGITS (p); /* A */
+ REQUIRE_DOT (p); /* . */
+ REQUIRE_DIGITS (p); /* B */
+ REQUIRE_DOT (p); /* . */
+ REQUIRE_DIGITS (p); /* C */
+ REQUIRE_DOT (p); /* . */
+ REQUIRE_DIGITS (p); /* D */
+
+ if (*p != '\0')
+ return false;
+ return true;
+}
+
+/* Check whether COOKIE_DOMAIN is an appropriate domain for HOST.
+ Originally I tried to make the check compliant with rfc2109, but
+ the sites deviated too often, so I had to fall back to "tail
+ matching", as defined by the original Netscape's cookie spec.
+
+ Wget now uses libpsl to check domain names against a public suffix
+ list to see if they are valid. However, since we don't provide a
+ psl on our own, if libpsl is compiled without a public suffix list,
+ fall back to using the original "tail matching" heuristic. Also if
+ libpsl is unable to convert the domain to lowercase, which means that
+ it doesn't have any runtime conversion support, we again fall back to
+ "tail matching" since libpsl states the results are unpredictable with
+ upper case strings.
+ */
+
+#ifdef HAVE_LIBPSL
+static psl_ctx_t *psl;
+#endif
+
+static bool
+check_domain_match (const char *cookie_domain, const char *host)
+{
+#ifdef HAVE_LIBPSL
+ static int init_psl;
+ char *cookie_domain_lower = NULL;
+ char *host_lower = NULL;
+ int is_acceptable;
+
+ DEBUGP (("cdm: 1\n"));
+ if (!init_psl)
+ {
+ init_psl = 1;
+
+#ifdef HAVE_PSL_LATEST
+ if ((psl = psl_latest (NULL)))
+ goto have_psl;
+
+ DEBUGP (("\nPSL: Failed to load any PSL data. "
+ "Falling back to insecure heuristics.\n"));
+#else
+ if ((psl = psl_builtin ()) && !psl_builtin_outdated ())
+ goto have_psl;
+
+ DEBUGP (("\nPSL: built-in data outdated. "
+ "Trying to load data from %s.\n",
+ quote (psl_builtin_filename ())));
+
+ if ((psl = psl_load_file (psl_builtin_filename ())))
+ goto have_psl;
+
+ DEBUGP (("\nPSL: %s not found or not readable. "
+ "Falling back to built-in data.\n",
+ quote (psl_builtin_filename ())));
+
+ if (!(psl = psl_builtin ()))
+ {
+ DEBUGP (("\nPSL: libpsl not built with a public suffix list. "
+ "Falling back to insecure heuristics.\n"));
+ goto no_psl;
+ }
+#endif
+ }
+ else if (!psl)
+ goto no_psl;
+
+have_psl:
+ if (psl_str_to_utf8lower (cookie_domain, NULL, NULL, &cookie_domain_lower) == PSL_SUCCESS &&
+ psl_str_to_utf8lower (host, NULL, NULL, &host_lower) == PSL_SUCCESS)
+ {
+ is_acceptable = psl_is_cookie_domain_acceptable (psl, host_lower, cookie_domain_lower);
+ }
+ else
+ {
+ DEBUGP (("libpsl unable to parse domain name. "
+ "Falling back to simple heuristics.\n"));
+ goto no_psl;
+ }
+
+ xfree (cookie_domain_lower);
+ xfree (host_lower);
+
+ return is_acceptable == 1;
+
+no_psl:
+ /* Cleanup the PSL pointers first */
+ xfree (cookie_domain_lower);
+ xfree (host_lower);
+#endif
+
+ /* For efficiency make some elementary checks first */
+ DEBUGP (("cdm: 2\n"));
+
+ /* For the sake of efficiency, check for exact match first. */
+ if (0 == strcasecmp (cookie_domain, host))
+ return true;
+
+ DEBUGP (("cdm: 3\n"));
+
+ /* HOST must match the tail of cookie_domain. */
+ if (!match_tail (host, cookie_domain, true))
+ return false;
+
+ /* We know that COOKIE_DOMAIN is a subset of HOST; however, we must
+ make sure that somebody is not trying to set the cookie for a
+ subdomain shared by many entities. For example, "company.co.uk"
+ must not be allowed to set a cookie for ".co.uk". On the other
+ hand, "sso.redhat.de" should be able to set a cookie for
+ ".redhat.de".
+
+ The only marginally sane way to handle this I can think of is to
+ reject on the basis of the length of the second-level domain name
+ (but when the top-level domain is unknown), with the assumption
+ that those of three or less characters could be reserved. For
+ example:
+
+ .co.org -> works because the TLD is known
+ .co.uk -> doesn't work because "co" is only two chars long
+ .com.au -> doesn't work because "com" is only 3 chars long
+ .cnn.uk -> doesn't work because "cnn" is also only 3 chars long (ugh)
+ .cnn.de -> doesn't work for the same reason (ugh!!)
+ .abcd.de -> works because "abcd" is 4 chars long
+ .img.cnn.de -> works because it's not trying to set the 2nd level domain
+ .cnn.co.uk -> works for the same reason
+
+ That should prevent misuse, while allowing reasonable usage. If
+ someone knows of a better way to handle this, please let me
+ know. */
+ {
+ const char *p = cookie_domain;
+ int dccount = 1; /* number of domain components */
+ int ldcl = 0; /* last domain component length */
+ int nldcl = 0; /* next to last domain component length */
+ int out;
+ if (*p == '.')
+ /* Ignore leading period in this calculation. */
+ ++p;
+ DEBUGP (("cdm: 4\n"));
+ for (out = 0; !out; p++)
+ switch (*p)
+ {
+ case '\0':
+ out = 1;
+ break;
+ case '.':
+ if (ldcl == 0)
+ /* Empty domain component found -- the domain is invalid. */
+ return false;
+ if (*(p + 1) == '\0')
+ {
+ /* Tolerate trailing '.' by not treating the domain as
+ one ending with an empty domain component. */
+ out = 1;
+ break;
+ }
+ nldcl = ldcl;
+ ldcl = 0;
+ ++dccount;
+ break;
+ default:
+ ++ldcl;
+ }
+
+ DEBUGP (("cdm: 5\n"));
+
+ if (dccount < 2)
+ return false;
+
+ DEBUGP (("cdm: 6\n"));
+
+ if (dccount == 2)
+ {
+ size_t i;
+ int known_toplevel = false;
+ static const char *known_toplevel_domains[] = {
+ ".com", ".edu", ".net", ".org", ".gov", ".mil", ".int"
+ };
+ for (i = 0; i < countof (known_toplevel_domains); i++)
+ if (match_tail (cookie_domain, known_toplevel_domains[i], true))
+ {
+ known_toplevel = true;
+ break;
+ }
+ if (!known_toplevel && nldcl <= 3)
+ return false;
+ }
+ }
+
+ DEBUGP (("cdm: 7\n"));
+
+ /* Don't allow the host "foobar.com" to set a cookie for domain
+ "bar.com". */
+ if (*cookie_domain != '.')
+ {
+ int dlen = strlen (cookie_domain);
+ int hlen = strlen (host);
+ /* cookie host: hostname.foobar.com */
+ /* desired domain: bar.com */
+ /* '.' must be here in host-> ^ */
+ if (hlen > dlen && host[hlen - dlen - 1] != '.')
+ return false;
+ }
+
+ DEBUGP (("cdm: 8\n"));
+
+ return true;
+}
+
+static int path_matches (const char *, const char *);
+
+/* Check whether PATH begins with COOKIE_PATH. */
+
+static bool
+check_path_match (const char *cookie_path, const char *path)
+{
+ return path_matches (path, cookie_path) != 0;
+}
+
+/* Process the HTTP `Set-Cookie' header. This results in storing the
+ cookie or discarding a matching one, or ignoring it completely, all
+ depending on the contents. */
+
+void
+cookie_handle_set_cookie (struct cookie_jar *jar,
+ const char *host, int port,
+ const char *path, const char *set_cookie)
+{
+ struct cookie *cookie;
+ cookies_now = time (NULL);
+ char buf[1024], *tmp;
+ size_t pathlen = strlen(path);
+
+ /* Wget's paths don't begin with '/' (blame rfc1808), but cookie
+ usage assumes /-prefixed paths. Until the rest of Wget is fixed,
+ simply prepend slash to PATH. */
+ if (pathlen < sizeof (buf) - 1)
+ tmp = buf;
+ else
+ tmp = xmalloc (pathlen + 2);
+
+ *tmp = '/';
+ memcpy (tmp + 1, path, pathlen + 1);
+ path = tmp;
+
+ cookie = parse_set_cookie (set_cookie, false);
+ if (!cookie)
+ goto out;
+
+ /* Sanitize parts of cookie. */
+
+ if (!cookie->domain)
+ {
+ cookie->domain = xstrdup (host);
+ cookie->domain_exact = 1;
+ /* Set the port, but only if it's non-default. */
+ if (port != 80 && port != 443)
+ cookie->port = port;
+ }
+ else
+ {
+ if (!check_domain_match (cookie->domain, host))
+ {
+ logprintf (LOG_NOTQUIET,
+ _("Cookie coming from %s attempted to set domain to "),
+ quotearg_style (escape_quoting_style, host));
+ logprintf (LOG_NOTQUIET,
+ _("%s\n"),
+ quotearg_style (escape_quoting_style, cookie->domain));
+ cookie->discard_requested = true;
+ }
+ }
+
+ if (!cookie->path)
+ {
+ /* The cookie doesn't set path: set it to the URL path, sans the
+ file part ("/dir/file" truncated to "/dir/"). */
+ char *trailing_slash = strrchr (path, '/');
+ if (trailing_slash)
+ cookie->path = strdupdelim (path, trailing_slash + 1);
+ else
+ /* no slash in the string -- can this even happen? */
+ cookie->path = xstrdup (path);
+ }
+ else
+ {
+ /* The cookie sets its own path; verify that it is legal. */
+ if (!check_path_match (cookie->path, path))
+ {
+ DEBUGP (("Attempt to fake the path: %s, %s\n",
+ cookie->path, path));
+ goto out;
+ }
+ }
+
+ /* Now store the cookie, or discard an existing cookie, if
+ discarding was requested. */
+
+ if (cookie->discard_requested)
+ {
+ discard_matching_cookie (jar, cookie);
+ goto out;
+ }
+
+ store_cookie (jar, cookie);
+ if (tmp != buf)
+ xfree (tmp);
+ return;
+
+ out:
+ if (cookie)
+ delete_cookie (cookie);
+ if (tmp != buf)
+ xfree (tmp);
+}
+
+/* Support for sending out cookies in HTTP requests, based on
+ previously stored cookies. Entry point is
+ `build_cookies_request'. */
+
+/* Return a count of how many times CHR occurs in STRING. */
+
+static int
+count_char (const char *string, char chr)
+{
+ const char *p;
+ int count = 0;
+ for (p = string; *p; p++)
+ if (*p == chr)
+ ++count;
+ return count;
+}
+
+/* Find the cookie chains whose domains match HOST and store them to
+ DEST.
+
+ A cookie chain is the head of a list of cookies that belong to a
+ host/domain. Given HOST "img.search.xemacs.org", this function
+ will return the chains for "img.search.xemacs.org",
+ "search.xemacs.org", and "xemacs.org" -- those of them that exist
+ (if any), that is.
+
+ DEST should be large enough to accept (in the worst case) as many
+ elements as there are domain components of HOST. */
+
+static int
+find_chains_of_host (struct cookie_jar *jar, const char *host,
+ struct cookie *dest[])
+{
+ int dest_count = 0;
+ int passes, passcnt;
+
+ /* Bail out quickly if there are no cookies in the jar. */
+ if (!hash_table_count (jar->chains))
+ return 0;
+
+ if (numeric_address_p (host))
+ /* If host is an IP address, only check for the exact match. */
+ passes = 1;
+ else
+ /* Otherwise, check all the subdomains except the top-level (last)
+ one. As a domain with N components has N-1 dots, the number of
+ passes equals the number of dots. */
+ passes = count_char (host, '.');
+
+ passcnt = 0;
+
+ /* Find chains that match HOST, starting with exact match and
+ progressing to less specific domains. For instance, given HOST
+ fly.srk.fer.hr, first look for fly.srk.fer.hr's chain, then
+ srk.fer.hr's, then fer.hr's. */
+ while (1)
+ {
+ struct cookie *chain = hash_table_get (jar->chains, host);
+ if (chain)
+ dest[dest_count++] = chain;
+ if (++passcnt >= passes)
+ break;
+ host = strchr (host, '.') + 1;
+ }
+
+ return dest_count;
+}
+
+/* If FULL_PATH begins with PREFIX, return the length of PREFIX, zero
+ otherwise. */
+
+static int
+path_matches (const char *full_path, const char *prefix)
+{
+ int len = strlen (prefix);
+
+ if (0 != strncmp (full_path, prefix, len))
+ /* FULL_PATH doesn't begin with PREFIX. */
+ return 0;
+
+ /* Length of PREFIX determines the quality of the match. */
+ return len + 1;
+}
+
+/* Return true if COOKIE matches the provided parameters of the URL
+ being downloaded: HOST, PORT, PATH, and SECFLAG.
+
+ If PATH_GOODNESS is non-NULL, store the "path goodness" value
+ there. That value is a measure of how closely COOKIE matches PATH,
+ used for ordering cookies. */
+
+static bool
+cookie_matches_url (const struct cookie *cookie,
+ const char *host, int port, const char *path,
+ bool secflag, int *path_goodness)
+{
+ int pg;
+
+ if (cookie_expired_p (cookie))
+ /* Ignore stale cookies. Don't bother unchaining the cookie at
+ this point -- Wget is a relatively short-lived application, and
+ stale cookies will not be saved by `save_cookies'. On the
+ other hand, this function should be as efficient as
+ possible. */
+ return false;
+
+ if (cookie->secure && !secflag)
+ /* Don't transmit secure cookies over insecure connections. */
+ return false;
+ if (cookie->port != PORT_ANY && cookie->port != port)
+ return false;
+
+ /* If exact domain match is required, verify that cookie's domain is
+ equal to HOST. If not, assume success on the grounds of the
+ cookie's chain having been found by find_chains_of_host. */
+ if (cookie->domain_exact
+ && 0 != strcasecmp (host, cookie->domain))
+ return false;
+
+ pg = path_matches (path, cookie->path);
+ if (pg == 0)
+ return false;
+
+ if (path_goodness)
+ /* If the caller requested path_goodness, we return it. This is
+ an optimization, so that the caller doesn't need to call
+ path_matches() again. */
+ *path_goodness = pg;
+ return true;
+}
+
+/* A structure that points to a cookie, along with the additional
+ information about the cookie's "goodness". This allows us to sort
+ the cookies when returning them to the server, as required by the
+ spec. */
+
+struct weighed_cookie {
+ struct cookie *cookie;
+ int domain_goodness;
+ int path_goodness;
+};
+
+/* Comparator used for uniquifying the list. */
+
+static int
+equality_comparator (const void *p1, const void *p2)
+{
+ struct weighed_cookie *wc1 = (struct weighed_cookie *)p1;
+ struct weighed_cookie *wc2 = (struct weighed_cookie *)p2;
+
+ int namecmp = strcmp (wc1->cookie->attr, wc2->cookie->attr);
+ int valuecmp = strcmp (wc1->cookie->value, wc2->cookie->value);
+
+ /* We only really care whether both name and value are equal. We
+ return them in this order only for consistency... */
+ return namecmp ? namecmp : valuecmp;
+}
+
+/* Eliminate duplicate cookies. "Duplicate cookies" are any two
+ cookies with the same attr name and value. Whenever a duplicate
+ pair is found, one of the cookies is removed. */
+
+static int
+eliminate_dups (struct weighed_cookie *outgoing, int count)
+{
+ struct weighed_cookie *h; /* hare */
+ struct weighed_cookie *t; /* tortoise */
+ struct weighed_cookie *end = outgoing + count;
+
+ /* We deploy a simple uniquify algorithm: first sort the array
+ according to our sort criteria, then copy it to itself, comparing
+ each cookie to its neighbor and ignoring the duplicates. */
+
+ qsort (outgoing, count, sizeof (struct weighed_cookie), equality_comparator);
+
+ /* "Hare" runs through all the entries in the array, followed by
+ "tortoise". If a duplicate is found, the hare skips it.
+ Non-duplicate entries are copied to the tortoise ptr. */
+
+ for (h = t = outgoing; h < end; h++)
+ {
+ if (h != end - 1)
+ {
+ struct cookie *c0 = h[0].cookie;
+ struct cookie *c1 = h[1].cookie;
+ if (!strcmp (c0->attr, c1->attr) && !strcmp (c0->value, c1->value))
+ continue; /* ignore the duplicate */
+ }
+
+ /* If the hare has advanced past the tortoise (because of
+ previous dups), make sure the values get copied. Otherwise,
+ no copying is necessary. */
+ if (h != t)
+ *t++ = *h;
+ else
+ t++;
+ }
+ return t - outgoing;
+}
+
+/* Comparator used for sorting by quality. */
+
+static int
+goodness_comparator (const void *p1, const void *p2)
+{
+ struct weighed_cookie *wc1 = (struct weighed_cookie *)p1;
+ struct weighed_cookie *wc2 = (struct weighed_cookie *)p2;
+
+ /* Subtractions take `wc2' as the first argument becauase we want a
+ sort in *decreasing* order of goodness. */
+ int dgdiff = wc2->domain_goodness - wc1->domain_goodness;
+ int pgdiff = wc2->path_goodness - wc1->path_goodness;
+
+ /* Sort by domain goodness; if these are the same, sort by path
+ goodness. (The sorting order isn't really specified; maybe it
+ should be the other way around.) */
+ return dgdiff ? dgdiff : pgdiff;
+}
+
+/* Generate a `Cookie' header for a request that goes to HOST:PORT and
+ requests PATH from the server. The resulting string is allocated
+ with `malloc', and the caller is responsible for freeing it. If no
+ cookies pertain to this request, i.e. no cookie header should be
+ generated, NULL is returned. */
+
+char *
+cookie_header (struct cookie_jar *jar, const char *host,
+ int port, const char *path, bool secflag)
+{
+ struct cookie *chains[32];
+ int chain_count;
+
+ struct cookie *cookie;
+ struct weighed_cookie *outgoing;
+ size_t count, i, ocnt;
+ char *result = NULL;
+ int result_size, pos;
+ char pathbuf[1024];
+
+ /* First, find the cookie chains whose domains match HOST. */
+
+ /* Allocate room for find_chains_of_host to write to. The number of
+ chains can at most equal the number of subdomains, hence
+ 1+<number of dots>. We ignore cookies with more than 32 labels. */
+ chain_count = 1 + count_char (host, '.');
+ if (chain_count > (int) countof (chains))
+ return NULL;
+ chain_count = find_chains_of_host (jar, host, chains);
+
+ /* No cookies for this host. */
+ if (chain_count <= 0)
+ return NULL;
+
+ /* Wget's paths don't begin with '/' (blame rfc1808), but cookie
+ usage assumes /-prefixed paths. Until the rest of Wget is fixed,
+ simply prepend slash to PATH. */
+ {
+ char *tmp;
+ size_t pathlen = strlen(path);
+
+ if (pathlen < sizeof (pathbuf) - 1)
+ tmp = pathbuf;
+ else
+ tmp = xmalloc (pathlen + 2);
+
+ *tmp = '/';
+ memcpy (tmp + 1, path, pathlen + 1);
+ path = tmp;
+ }
+
+ cookies_now = time (NULL);
+
+ /* Now extract from the chains those cookies that match our host
+ (for domain_exact cookies), port (for cookies with port other
+ than PORT_ANY), etc. See matching_cookie for details. */
+
+ /* Count the number of matching cookies. */
+ count = 0;
+ for (i = 0; i < (unsigned) chain_count; i++)
+ for (cookie = chains[i]; cookie; cookie = cookie->next)
+ if (cookie_matches_url (cookie, host, port, path, secflag, NULL))
+ ++count;
+ if (!count)
+ goto out; /* no cookies matched */
+
+ /* Allocate the array. */
+ if (count > SIZE_MAX / sizeof (struct weighed_cookie))
+ goto out; /* unable to process so many cookies */
+ outgoing = xmalloc (count * sizeof (struct weighed_cookie));
+
+ /* Fill the array with all the matching cookies from the chains that
+ match HOST. */
+ ocnt = 0;
+ for (i = 0; i < (unsigned) chain_count; i++)
+ for (cookie = chains[i]; cookie; cookie = cookie->next)
+ {
+ int pg;
+ if (!cookie_matches_url (cookie, host, port, path, secflag, &pg))
+ continue;
+ outgoing[ocnt].cookie = cookie;
+ outgoing[ocnt].domain_goodness = strlen (cookie->domain);
+ outgoing[ocnt].path_goodness = pg;
+ ++ocnt;
+ }
+ assert (ocnt == count);
+
+ /* Eliminate duplicate cookies; that is, those whose name and value
+ are the same. */
+ count = eliminate_dups (outgoing, count);
+
+ /* Sort the array so that best-matching domains come first, and
+ that, within one domain, best-matching paths come first. */
+ qsort (outgoing, count, sizeof (struct weighed_cookie), goodness_comparator);
+
+ /* Count the space the name=value pairs will take. */
+ result_size = 0;
+ for (i = 0; i < count; i++)
+ {
+ struct cookie *c = outgoing[i].cookie;
+ /* name=value */
+ result_size += strlen (c->attr) + 1 + strlen (c->value);
+ }
+
+ /* Allocate output buffer:
+ name=value pairs -- result_size
+ "; " separators -- (count - 1) * 2
+ \0 terminator -- 1 */
+ result_size = result_size + (count - 1) * 2 + 1;
+ result = xmalloc (result_size);
+ pos = 0;
+ for (i = 0; i < count; i++)
+ {
+ struct cookie *c = outgoing[i].cookie;
+ int namlen = strlen (c->attr);
+ int vallen = strlen (c->value);
+
+ memcpy (result + pos, c->attr, namlen);
+ pos += namlen;
+ result[pos++] = '=';
+ memcpy (result + pos, c->value, vallen);
+ pos += vallen;
+ if (i < count - 1)
+ {
+ result[pos++] = ';';
+ result[pos++] = ' ';
+ }
+ }
+ result[pos++] = '\0';
+ xfree (outgoing);
+ assert (pos == result_size);
+
+out:
+ if (path != pathbuf)
+ xfree (path);
+
+return result;
+}
+
+/* Support for loading and saving cookies. The format used for
+ loading and saving should be the format of the `cookies.txt' file
+ used by Netscape and Mozilla, at least the Unix versions.
+ (Apparently IE can export cookies in that format as well.) The
+ format goes like this:
+
+ DOMAIN DOMAIN-FLAG PATH SECURE-FLAG TIMESTAMP ATTR-NAME ATTR-VALUE
+
+ DOMAIN -- cookie domain, optionally followed by :PORT
+ DOMAIN-FLAG -- whether all hosts in the domain match
+ PATH -- cookie path
+ SECURE-FLAG -- whether cookie requires secure connection
+ TIMESTAMP -- expiry timestamp, number of seconds since epoch
+ ATTR-NAME -- name of the cookie attribute
+ ATTR-VALUE -- value of the cookie attribute (empty if absent)
+
+ The fields are separated by TABs. All fields are mandatory, except
+ for ATTR-VALUE. The `-FLAG' fields are boolean, their legal values
+ being "TRUE" and "FALSE'. Empty lines, lines consisting of
+ whitespace only, and comment lines (beginning with # optionally
+ preceded by whitespace) are ignored.
+
+ Example line from cookies.txt (split in two lines for readability):
+
+ .google.com TRUE / FALSE 2147368447 \
+ PREF ID=34bb47565bbcd47b:LD=en:NR=20:TM=985172580:LM=985739012
+
+*/
+
+/* If the region [B, E) ends with :<digits>, parse the number, return
+ it, and store new boundary (location of the `:') to DOMAIN_E_PTR.
+ If port is not specified, return 0. */
+
+static int
+domain_port (const char *domain_b, const char *domain_e,
+ const char **domain_e_ptr)
+{
+ int port = 0;
+ const char *p;
+ const char *colon = memchr (domain_b, ':', domain_e - domain_b);
+ if (!colon)
+ return 0;
+ for (p = colon + 1; p < domain_e && c_isdigit (*p); p++)
+ port = 10 * port + (*p - '0');
+ if (p < domain_e)
+ /* Garbage following port number. */
+ return 0;
+ *domain_e_ptr = colon;
+ return port;
+}
+
+#define GET_WORD(p, b, e) do { \
+ b = p; \
+ while (*p && *p != '\t') \
+ ++p; \
+ e = p; \
+ if (b == e || !*p) \
+ goto next; \
+ ++p; \
+} while (0)
+
+/* Load cookies from FILE. */
+
+void
+cookie_jar_load (struct cookie_jar *jar, const char *file)
+{
+ char *line = NULL;
+ size_t bufsize = 0;
+
+ FILE *fp = fopen (file, "r");
+ if (!fp)
+ {
+ logprintf (LOG_NOTQUIET, _("Cannot open cookies file %s: %s\n"),
+ quote (file), strerror (errno));
+ return;
+ }
+
+ cookies_now = time (NULL);
+
+ while (getline (&line, &bufsize, fp) > 0)
+ {
+ struct cookie *cookie;
+ char *p = line;
+
+ double expiry;
+ int port;
+
+ char *domain_b = NULL, *domain_e = NULL;
+ char *domflag_b = NULL, *domflag_e = NULL;
+ char *path_b = NULL, *path_e = NULL;
+ char *secure_b = NULL, *secure_e = NULL;
+ char *expires_b = NULL, *expires_e = NULL;
+ char *name_b = NULL, *name_e = NULL;
+ char *value_b = NULL, *value_e = NULL;
+
+ /* Skip leading white-space. */
+ while (*p && c_isspace (*p))
+ ++p;
+ /* Ignore empty lines. */
+ if (!*p || *p == '#')
+ continue;
+
+ GET_WORD (p, domain_b, domain_e);
+ GET_WORD (p, domflag_b, domflag_e);
+ GET_WORD (p, path_b, path_e);
+ GET_WORD (p, secure_b, secure_e);
+ GET_WORD (p, expires_b, expires_e);
+ GET_WORD (p, name_b, name_e);
+
+ /* Don't use GET_WORD for value because it ends with newline,
+ not TAB. */
+ value_b = p;
+ value_e = p + strlen (p);
+ if (value_e > value_b && value_e[-1] == '\n')
+ --value_e;
+ if (value_e > value_b && value_e[-1] == '\r')
+ --value_e;
+ /* Empty values are legal (I think), so don't bother checking. */
+
+ cookie = cookie_new ();
+
+ cookie->attr = strdupdelim (name_b, name_e);
+ cookie->value = strdupdelim (value_b, value_e);
+ cookie->path = strdupdelim (path_b, path_e);
+ cookie->secure = BOUNDED_EQUAL (secure_b, secure_e, "TRUE");
+
+ /* Curl source says, quoting Andre Garcia: "flag: A TRUE/FALSE
+ value indicating if all machines within a given domain can
+ access the variable. This value is set automatically by the
+ browser, depending on the value set for the domain." */
+ cookie->domain_exact = !BOUNDED_EQUAL (domflag_b, domflag_e, "TRUE");
+
+ /* DOMAIN needs special treatment because we might need to
+ extract the port. */
+ port = domain_port (domain_b, domain_e, (const char **)&domain_e);
+ if (port)
+ cookie->port = port;
+
+ if (*domain_b == '.')
+ ++domain_b; /* remove leading dot internally */
+ cookie->domain = strdupdelim (domain_b, domain_e);
+
+ /* safe default in case EXPIRES field is garbled. */
+ expiry = (double)cookies_now - 1;
+
+ /* I don't like changing the line, but it's safe here. (line is
+ malloced.) */
+ *expires_e = '\0';
+ sscanf (expires_b, "%lf", &expiry);
+
+ if (expiry == 0)
+ {
+ /* EXPIRY can be 0 for session cookies saved because the
+ user specified `--keep-session-cookies' in the past.
+ They remain session cookies, and will be saved only if
+ the user has specified `keep-session-cookies' again. */
+ }
+ else
+ {
+ if (expiry < cookies_now)
+ goto abort_cookie; /* ignore stale cookie. */
+ cookie->expiry_time = (time_t) expiry;
+ cookie->permanent = 1;
+ }
+
+ store_cookie (jar, cookie);
+
+ next:
+ continue;
+
+ abort_cookie:
+ delete_cookie (cookie);
+ }
+
+ xfree(line);
+ fclose (fp);
+}
+
+/* Save cookies, in format described above, to FILE. */
+
+void
+cookie_jar_save (struct cookie_jar *jar, const char *file)
+{
+ FILE *fp;
+ hash_table_iterator iter;
+
+ DEBUGP (("Saving cookies to %s.\n", file));
+
+ cookies_now = time (NULL);
+
+ fp = fopen (file, "w");
+ if (!fp)
+ {
+ logprintf (LOG_NOTQUIET, _("Cannot open cookies file %s: %s\n"),
+ quote (file), strerror (errno));
+ return;
+ }
+
+ fputs ("# HTTP Cookie File\n", fp);
+ fprintf (fp, "# Generated by Wget on %s.\n", datetime_str (cookies_now));
+ fputs ("# Edit at your own risk.\n\n", fp);
+
+ for (hash_table_iterate (jar->chains, &iter);
+ hash_table_iter_next (&iter);
+ )
+ {
+ const char *domain = iter.key;
+ struct cookie *cookie = iter.value;
+ for (; cookie; cookie = cookie->next)
+ {
+ if (!cookie->permanent && !opt.keep_session_cookies)
+ continue;
+ if (cookie_expired_p (cookie))
+ continue;
+ if (!cookie->domain_exact)
+ fputc ('.', fp);
+ fputs (domain, fp);
+ if (cookie->port != PORT_ANY)
+ fprintf (fp, ":%d", cookie->port);
+ fprintf (fp, "\t%s\t%s\t%s\t%.0f\t%s\t%s\n",
+ cookie->domain_exact ? "FALSE" : "TRUE",
+ cookie->path, cookie->secure ? "TRUE" : "FALSE",
+ (double)cookie->expiry_time,
+ cookie->attr, cookie->value);
+ if (ferror (fp))
+ goto out;
+ }
+ }
+ out:
+ if (ferror (fp))
+ logprintf (LOG_NOTQUIET, _("Error writing to %s: %s\n"),
+ quote (file), strerror (errno));
+ if (fclose (fp) < 0)
+ logprintf (LOG_NOTQUIET, _("Error closing %s: %s\n"),
+ quote (file), strerror (errno));
+
+ DEBUGP (("Done saving cookies.\n"));
+}
+
+/* Clean up cookie-related data. */
+
+void
+cookie_jar_delete (struct cookie_jar *jar)
+{
+ /* Iterate over chains (indexed by domain) and free them. */
+ hash_table_iterator iter;
+ for (hash_table_iterate (jar->chains, &iter); hash_table_iter_next (&iter); )
+ {
+ struct cookie *chain = iter.value;
+ xfree (iter.key);
+ /* Then all cookies in this chain. */
+ while (chain)
+ {
+ struct cookie *next = chain->next;
+ delete_cookie (chain);
+ chain = next;
+ }
+ }
+ hash_table_destroy (jar->chains);
+ xfree (jar);
+
+#ifdef HAVE_LIBPSL
+ psl_free (psl);
+ psl = NULL;
+#endif
+}
+
+/* Test cases. Currently this is only tests parse_set_cookies. To
+ use, recompile Wget with -DTEST_COOKIES and call test_cookies()
+ from main. */
+
+#ifdef TEST_COOKIES
+void
+test_cookies (void)
+{
+ /* Tests expected to succeed: */
+ static struct {
+ const char *data;
+ const char *results[10];
+ } tests_succ[] = {
+ { "arg=value", {"arg", "value", NULL} },
+ { "arg1=value1;arg2=value2", {"arg1", "value1", "arg2", "value2", NULL} },
+ { "arg1=value1; arg2=value2", {"arg1", "value1", "arg2", "value2", NULL} },
+ { "arg1=value1; arg2=value2;", {"arg1", "value1", "arg2", "value2", NULL} },
+ { "arg1=value1; arg2=value2; ", {"arg1", "value1", "arg2", "value2", NULL} },
+ { "arg1=\"value1\"; arg2=\"\"", {"arg1", "value1", "arg2", "", NULL} },
+ { "arg=", {"arg", "", NULL} },
+ { "arg1=; arg2=", {"arg1", "", "arg2", "", NULL} },
+ { "arg1 = ; arg2= ", {"arg1", "", "arg2", "", NULL} },
+ };
+
+ /* Tests expected to fail: */
+ static char *tests_fail[] = {
+ ";",
+ "arg=\"unterminated",
+ "=empty-name",
+ "arg1=;=another-empty-name",
+ };
+ int i;
+
+ for (i = 0; i < countof (tests_succ); i++)
+ {
+ int ind;
+ const char *data = tests_succ[i].data;
+ const char **expected = tests_succ[i].results;
+ struct cookie *c;
+
+ c = parse_set_cookie (data, true);
+ if (!c)
+ {
+ printf ("NULL cookie returned for valid data: %s\n", data);
+ continue;
+ }
+
+ /* Test whether extract_param handles these cases correctly. */
+ {
+ param_token name, value;
+ const char *ptr = data;
+ int j = 0;
+ while (extract_param (&ptr, &name, &value, ';', NULL))
+ {
+ char *n = strdupdelim (name.b, name.e);
+ char *v = strdupdelim (value.b, value.e);
+ if (!expected[j])
+ {
+ printf ("Too many parameters for '%s'\n", data);
+ break;
+ }
+ if (0 != strcmp (expected[j], n))
+ printf ("Invalid name %d for '%s' (expected '%s', got '%s')\n",
+ j / 2 + 1, data, expected[j], n);
+ if (0 != strcmp (expected[j + 1], v))
+ printf ("Invalid value %d for '%s' (expected '%s', got '%s')\n",
+ j / 2 + 1, data, expected[j + 1], v);
+ j += 2;
+ xfree (n);
+ xfree (v);
+ }
+ if (expected[j])
+ printf ("Too few parameters for '%s'\n", data);
+ }
+ }
+
+ for (i = 0; i < countof (tests_fail); i++)
+ {
+ struct cookie *c;
+ char *data = tests_fail[i];
+ c = parse_set_cookie (data, true);
+ if (c)
+ printf ("Failed to report error on invalid data: %s\n", data);
+ }
+}
+#endif /* TEST_COOKIES */
diff --git a/src/cookies.h b/src/cookies.h
new file mode 100644
index 0000000..903db32
--- /dev/null
+++ b/src/cookies.h
@@ -0,0 +1,47 @@
+/* Support for cookies.
+ Copyright (C) 2001-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at
+your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef COOKIES_H
+#define COOKIES_H
+
+struct cookie_jar;
+
+struct cookie_jar *cookie_jar_new (void);
+void cookie_jar_delete (struct cookie_jar *);
+
+void cookie_handle_set_cookie (struct cookie_jar *, const char *, int,
+ const char *, const char *);
+char *cookie_header (struct cookie_jar *, const char *, int,
+ const char *, bool);
+
+void cookie_jar_load (struct cookie_jar *, const char *);
+void cookie_jar_save (struct cookie_jar *, const char *);
+
+#endif /* COOKIES_H */
diff --git a/src/css-tokens.h b/src/css-tokens.h
new file mode 100644
index 0000000..40307ff
--- /dev/null
+++ b/src/css-tokens.h
@@ -0,0 +1,65 @@
+/* Declarations for css.lex
+ Copyright (C) 2006, 2009-2011, 2015, 2018-2020 Free Software
+ Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at
+your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef CSS_TOKENS_H
+#define CSS_TOKENS_H
+
+enum {
+ CSSEOF = 0,
+ S = 1,
+ CDO = 2,
+ CDC = 3,
+ INCLUDES = 4,
+ DASHMATCH = 5,
+ STRING = 6,
+ BAD_STRING = 7,
+ IDENT = 8,
+ HASH = 9,
+ IMPORT_SYM = 10,
+ PAGE_SYM = 11,
+ MEDIA_SYM = 12,
+ CHARSET_SYM = 13,
+ IMPORTANT_SYM = 14,
+ EMS = 15,
+ EXS = 16,
+ LENGTH = 17,
+ ANGLE = 18,
+ TIME = 19,
+ FREQ = 20,
+ DIMENSION = 21,
+ PERCENTAGE = 22,
+ NUMBER = 23,
+ URI = 24,
+ BAD_URI = 25,
+ FUNCTION = 26,
+ COMMENT = 27
+};
+
+#endif /* CSS_TOKENS_H */
diff --git a/src/css-url.c b/src/css-url.c
new file mode 100644
index 0000000..eacd926
--- /dev/null
+++ b/src/css-url.c
@@ -0,0 +1,236 @@
+/* Collect URLs from CSS source.
+ Copyright (C) 1998, 2000-2003, 2009-2011, 2014-2015, 2018-2020 Free
+ Software Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at
+your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+/*
+ Note that this is not an actual CSS parser, but just a lexical
+ scanner with a tiny bit more smarts bolted on top. A full parser
+ is somewhat overkill for this job. The only things we're interested
+ in are @import rules and url() tokens, so it's easy enough to
+ grab those without truly understanding the input. The only downside
+ to this is that we might be coerced into downloading files that
+ a browser would ignore. That might merit some more investigation.
+ */
+
+#include <wget.h>
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <errno.h>
+
+#include "wget.h"
+#include "utils.h"
+#include "convert.h"
+#include "html-url.h"
+#include "css-tokens.h"
+#include "css-url.h"
+#include "xstrndup.h"
+
+/* from lex.yy.c */
+extern char *yytext;
+extern int yyleng;
+typedef struct yy_buffer_state *YY_BUFFER_STATE;
+extern YY_BUFFER_STATE yy_scan_bytes (const char *bytes,int len );
+extern void yy_delete_buffer (YY_BUFFER_STATE b);
+extern int yylex (void);
+extern void yylex_destroy(void);
+
+/*
+ Given a detected URI token, get only the URI specified within.
+ Also adjust the starting position and length of the string.
+
+ A URI can be specified with or without quotes, and the quotes
+ can be single or double quotes. In addition there can be
+ whitespace after the opening parenthesis and before the closing
+ parenthesis.
+*/
+static char *
+get_uri_string (const char *at, int *pos, int *length)
+{
+ if (*length < 4)
+ return NULL;
+
+ if (0 != strncasecmp (at + *pos, "url(", 4))
+ return NULL;
+
+ *pos += 4;
+ *length -= 5; /* url() */
+
+ /* skip leading space */
+ while (*length > 0 && isspace (at[*pos]))
+ {
+ (*pos)++;
+ if (--(*length) == 0)
+ return NULL;
+ }
+
+ /* skip trailing space */
+ while (*length > 0 && isspace (at[*pos + *length - 1]))
+ {
+ (*length)--;
+ }
+
+ /* trim off quotes */
+ if (*length >= 2 && (at[*pos] == '\'' || at[*pos] == '"'))
+ {
+ (*pos)++;
+ *length -= 2;
+ }
+
+ if (*length <= 0)
+ return NULL;
+
+ return xstrndup (at + *pos, *length);
+}
+
+void
+get_urls_css (struct map_context *ctx, int offset, int buf_length)
+{
+ int token;
+ /*char tmp[2048];*/
+ int buffer_pos = 0;
+ int pos, length;
+ char *uri;
+ YY_BUFFER_STATE b;
+
+ /* tell flex to scan from this buffer */
+ b = yy_scan_bytes (ctx->text + offset, buf_length);
+
+ while((token = yylex()) != CSSEOF)
+ {
+ /*DEBUGP (("%s ", token_names[token]));*/
+ /* @import "foo.css"
+ or @import url(foo.css)
+ */
+ if(token == IMPORT_SYM)
+ {
+ do {
+ buffer_pos += yyleng;
+ } while((token = yylex()) == S);
+
+ /*DEBUGP (("%s ", token_names[token]));*/
+
+ if (token == STRING || token == URI)
+ {
+ /*DEBUGP (("Got URI "));*/
+ pos = buffer_pos + offset;
+ length = yyleng;
+
+ if (token == URI)
+ {
+ uri = get_uri_string (ctx->text, &pos, &length);
+ }
+ else if (length >= 2)
+ {
+ /* cut out quote characters */
+ pos++;
+ length -= 2;
+ uri = xmalloc (length + 1);
+ memcpy (uri, yytext + 1, length);
+ uri[length] = '\0';
+ }
+ else
+ uri = NULL;
+
+ if (uri)
+ {
+ struct urlpos *up = append_url (uri, pos, length, ctx);
+ DEBUGP (("Found @import: [%s] at %d [%s]\n", yytext, buffer_pos, uri));
+
+ if (up)
+ {
+ up->link_inline_p = 1;
+ up->link_css_p = 1;
+ up->link_expect_css = 1;
+ }
+
+ xfree(uri);
+ }
+ }
+ }
+ /* background-image: url(foo.png)
+ note that we don't care what
+ property this is actually on.
+ */
+ else if(token == URI)
+ {
+ pos = buffer_pos + offset;
+ length = yyleng;
+ uri = get_uri_string (ctx->text, &pos, &length);
+
+ if (uri)
+ {
+ struct urlpos *up = append_url (uri, pos, length, ctx);
+ DEBUGP (("Found URI: [%s] at %d [%s]\n", yytext, buffer_pos, uri));
+ if (up)
+ {
+ up->link_inline_p = 1;
+ up->link_css_p = 1;
+ }
+
+ xfree (uri);
+ }
+ }
+ buffer_pos += yyleng;
+ }
+
+ yy_delete_buffer(b);
+ yylex_destroy();
+
+ DEBUGP (("\n"));
+}
+
+struct urlpos *
+get_urls_css_file (const char *file, const char *url)
+{
+ struct file_memory *fm;
+ struct map_context ctx;
+
+ /* Load the file. */
+ fm = wget_read_file (file);
+ if (!fm)
+ {
+ logprintf (LOG_NOTQUIET, "%s: %s\n", file, strerror (errno));
+ return NULL;
+ }
+ DEBUGP (("Loaded %s (size %s).\n", file, number_to_static_string (fm->length)));
+
+ ctx.text = fm->content;
+ ctx.head = NULL;
+ ctx.base = NULL;
+ ctx.parent_base = url ? url : opt.base_href;
+ ctx.document_file = file;
+ ctx.nofollow = 0;
+
+ get_urls_css (&ctx, 0, fm->length);
+ wget_read_file_free (fm);
+ return ctx.head;
+}
diff --git a/src/css-url.h b/src/css-url.h
new file mode 100644
index 0000000..e8d7d1f
--- /dev/null
+++ b/src/css-url.h
@@ -0,0 +1,37 @@
+/* Declarations for css-url.c.
+ Copyright (C) 2006, 2009-2011, 2015, 2018-2020 Free Software
+ Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at
+your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef CSS_URL_H
+#define CSS_URL_H
+
+void get_urls_css (struct map_context *, int, int);
+struct urlpos *get_urls_css_file (const char *, const char *);
+
+#endif /* CSS_URL_H */
diff --git a/src/css.c b/src/css.c
new file mode 100644
index 0000000..7f51801
--- /dev/null
+++ b/src/css.c
@@ -0,0 +1,3932 @@
+#line 1 "css.c"
+/* config.h must precede flex's inclusion of <stdio.h>
+ in order for its _GNU_SOURCE definition to take effect. */
+#include <config.h>
+
+#line 6 "css.c"
+
+#define YY_INT_ALIGNED short int
+
+/* A lexical scanner generated by flex */
+
+#define FLEX_SCANNER
+#define YY_FLEX_MAJOR_VERSION 2
+#define YY_FLEX_MINOR_VERSION 6
+#define YY_FLEX_SUBMINOR_VERSION 4
+#if YY_FLEX_SUBMINOR_VERSION > 0
+#define FLEX_BETA
+#endif
+
+/* First, we deal with platform-specific or compiler-specific issues. */
+
+/* begin standard C headers. */
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+
+/* end standard C headers. */
+
+/* flex integer type definitions */
+
+#ifndef FLEXINT_H
+#define FLEXINT_H
+
+/* C99 systems have <inttypes.h>. Non-C99 systems may or may not. */
+
+#if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
+
+/* C99 says to define __STDC_LIMIT_MACROS before including stdint.h,
+ * if you want the limit (max/min) macros for int types.
+ */
+#ifndef __STDC_LIMIT_MACROS
+#define __STDC_LIMIT_MACROS 1
+#endif
+
+#include <inttypes.h>
+typedef int8_t flex_int8_t;
+typedef uint8_t flex_uint8_t;
+typedef int16_t flex_int16_t;
+typedef uint16_t flex_uint16_t;
+typedef int32_t flex_int32_t;
+typedef uint32_t flex_uint32_t;
+#else
+typedef signed char flex_int8_t;
+typedef short int flex_int16_t;
+typedef int flex_int32_t;
+typedef unsigned char flex_uint8_t;
+typedef unsigned short int flex_uint16_t;
+typedef unsigned int flex_uint32_t;
+
+/* Limits of integral types. */
+#ifndef INT8_MIN
+#define INT8_MIN (-128)
+#endif
+#ifndef INT16_MIN
+#define INT16_MIN (-32767-1)
+#endif
+#ifndef INT32_MIN
+#define INT32_MIN (-2147483647-1)
+#endif
+#ifndef INT8_MAX
+#define INT8_MAX (127)
+#endif
+#ifndef INT16_MAX
+#define INT16_MAX (32767)
+#endif
+#ifndef INT32_MAX
+#define INT32_MAX (2147483647)
+#endif
+#ifndef UINT8_MAX
+#define UINT8_MAX (255U)
+#endif
+#ifndef UINT16_MAX
+#define UINT16_MAX (65535U)
+#endif
+#ifndef UINT32_MAX
+#define UINT32_MAX (4294967295U)
+#endif
+
+#ifndef SIZE_MAX
+#define SIZE_MAX (~(size_t)0)
+#endif
+
+#endif /* ! C99 */
+
+#endif /* ! FLEXINT_H */
+
+/* begin standard C++ headers. */
+
+/* TODO: this is always defined, so inline it */
+#define yyconst const
+
+#if defined(__GNUC__) && __GNUC__ >= 3
+#define yynoreturn __attribute__((__noreturn__))
+#else
+#define yynoreturn
+#endif
+
+/* Returned upon end-of-file. */
+#define YY_NULL 0
+
+/* Promotes a possibly negative, possibly signed char to an
+ * integer in range [0..255] for use as an array index.
+ */
+#define YY_SC_TO_UI(c) ((YY_CHAR) (c))
+
+/* Enter a start condition. This macro really ought to take a parameter,
+ * but we do it the disgusting crufty way forced on us by the ()-less
+ * definition of BEGIN.
+ */
+#define BEGIN (yy_start) = 1 + 2 *
+/* Translate the current start state into a value that can be later handed
+ * to BEGIN to return to the state. The YYSTATE alias is for lex
+ * compatibility.
+ */
+#define YY_START (((yy_start) - 1) / 2)
+#define YYSTATE YY_START
+/* Action number for EOF rule of a given start state. */
+#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
+/* Special action meaning "start processing a new file". */
+#define YY_NEW_FILE yyrestart( yyin )
+#define YY_END_OF_BUFFER_CHAR 0
+
+/* Size of default input buffer. */
+#ifndef YY_BUF_SIZE
+#ifdef __ia64__
+/* On IA-64, the buffer size is 16k, not 8k.
+ * Moreover, YY_BUF_SIZE is 2*YY_READ_BUF_SIZE in the general case.
+ * Ditto for the __ia64__ case accordingly.
+ */
+#define YY_BUF_SIZE 32768
+#else
+#define YY_BUF_SIZE 16384
+#endif /* __ia64__ */
+#endif
+
+/* The state buf must be large enough to hold one state per character in the main buffer.
+ */
+#define YY_STATE_BUF_SIZE ((YY_BUF_SIZE + 2) * sizeof(yy_state_type))
+
+#ifndef YY_TYPEDEF_YY_BUFFER_STATE
+#define YY_TYPEDEF_YY_BUFFER_STATE
+typedef struct yy_buffer_state *YY_BUFFER_STATE;
+#endif
+
+#ifndef YY_TYPEDEF_YY_SIZE_T
+#define YY_TYPEDEF_YY_SIZE_T
+typedef size_t yy_size_t;
+#endif
+
+extern int yyleng;
+
+extern FILE *yyin, *yyout;
+
+#define EOB_ACT_CONTINUE_SCAN 0
+#define EOB_ACT_END_OF_FILE 1
+#define EOB_ACT_LAST_MATCH 2
+
+ #define YY_LESS_LINENO(n)
+ #define YY_LINENO_REWIND_TO(ptr)
+
+/* Return all but the first "n" matched characters back to the input stream. */
+#define yyless(n) \
+ do \
+ { \
+ /* Undo effects of setting up yytext. */ \
+ int yyless_macro_arg = (n); \
+ YY_LESS_LINENO(yyless_macro_arg);\
+ *yy_cp = (yy_hold_char); \
+ YY_RESTORE_YY_MORE_OFFSET \
+ (yy_c_buf_p) = yy_cp = yy_bp + yyless_macro_arg - YY_MORE_ADJ; \
+ YY_DO_BEFORE_ACTION; /* set up yytext again */ \
+ } \
+ while ( 0 )
+#define unput(c) yyunput( c, (yytext_ptr) )
+
+#ifndef YY_STRUCT_YY_BUFFER_STATE
+#define YY_STRUCT_YY_BUFFER_STATE
+struct yy_buffer_state
+ {
+ FILE *yy_input_file;
+
+ char *yy_ch_buf; /* input buffer */
+ char *yy_buf_pos; /* current position in input buffer */
+
+ /* Size of input buffer in bytes, not including room for EOB
+ * characters.
+ */
+ int yy_buf_size;
+
+ /* Number of characters read into yy_ch_buf, not including EOB
+ * characters.
+ */
+ int yy_n_chars;
+
+ /* Whether we "own" the buffer - i.e., we know we created it,
+ * and can realloc() it to grow it, and should free() it to
+ * delete it.
+ */
+ int yy_is_our_buffer;
+
+ /* Whether this is an "interactive" input source; if so, and
+ * if we're using stdio for input, then we want to use getc()
+ * instead of fread(), to make sure we stop fetching input after
+ * each newline.
+ */
+ int yy_is_interactive;
+
+ /* Whether we're considered to be at the beginning of a line.
+ * If so, '^' rules will be active on the next match, otherwise
+ * not.
+ */
+ int yy_at_bol;
+
+ int yy_bs_lineno; /**< The line count. */
+ int yy_bs_column; /**< The column count. */
+
+ /* Whether to try to fill the input buffer when we reach the
+ * end of it.
+ */
+ int yy_fill_buffer;
+
+ int yy_buffer_status;
+
+#define YY_BUFFER_NEW 0
+#define YY_BUFFER_NORMAL 1
+ /* When an EOF's been seen but there's still some text to process
+ * then we mark the buffer as YY_EOF_PENDING, to indicate that we
+ * shouldn't try reading from the input source any more. We might
+ * still have a bunch of tokens to match, though, because of
+ * possible backing-up.
+ *
+ * When we actually see the EOF, we change the status to "new"
+ * (via yyrestart()), so that the user can continue scanning by
+ * just pointing yyin at a new input file.
+ */
+#define YY_BUFFER_EOF_PENDING 2
+
+ };
+#endif /* !YY_STRUCT_YY_BUFFER_STATE */
+
+/* Stack of input buffers. */
+static size_t yy_buffer_stack_top = 0; /**< index of top of stack. */
+static size_t yy_buffer_stack_max = 0; /**< capacity of stack. */
+static YY_BUFFER_STATE * yy_buffer_stack = NULL; /**< Stack as an array. */
+
+/* We provide macros for accessing buffer states in case in the
+ * future we want to put the buffer states in a more general
+ * "scanner state".
+ *
+ * Returns the top of the stack, or NULL.
+ */
+#define YY_CURRENT_BUFFER ( (yy_buffer_stack) \
+ ? (yy_buffer_stack)[(yy_buffer_stack_top)] \
+ : NULL)
+/* Same as previous macro, but useful when we know that the buffer stack is not
+ * NULL or when we need an lvalue. For internal use only.
+ */
+#define YY_CURRENT_BUFFER_LVALUE (yy_buffer_stack)[(yy_buffer_stack_top)]
+
+/* yy_hold_char holds the character lost when yytext is formed. */
+static char yy_hold_char;
+static int yy_n_chars; /* number of characters read into yy_ch_buf */
+int yyleng;
+
+/* Points to current character in buffer. */
+static char *yy_c_buf_p = NULL;
+static int yy_init = 0; /* whether we need to initialize */
+static int yy_start = 0; /* start state number */
+
+/* Flag which is used to allow yywrap()'s to do buffer switches
+ * instead of setting up a fresh yyin. A bit of a hack ...
+ */
+static int yy_did_buffer_switch_on_eof;
+
+void yyrestart ( FILE *input_file );
+void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer );
+YY_BUFFER_STATE yy_create_buffer ( FILE *file, int size );
+void yy_delete_buffer ( YY_BUFFER_STATE b );
+void yy_flush_buffer ( YY_BUFFER_STATE b );
+void yypush_buffer_state ( YY_BUFFER_STATE new_buffer );
+void yypop_buffer_state ( void );
+
+static void yyensure_buffer_stack ( void );
+static void yy_load_buffer_state ( void );
+static void yy_init_buffer ( YY_BUFFER_STATE b, FILE *file );
+#define YY_FLUSH_BUFFER yy_flush_buffer( YY_CURRENT_BUFFER )
+
+YY_BUFFER_STATE yy_scan_buffer ( char *base, yy_size_t size );
+YY_BUFFER_STATE yy_scan_string ( const char *yy_str );
+YY_BUFFER_STATE yy_scan_bytes ( const char *bytes, int len );
+
+void *yyalloc ( yy_size_t );
+void *yyrealloc ( void *, yy_size_t );
+void yyfree ( void * );
+
+#define yy_new_buffer yy_create_buffer
+#define yy_set_interactive(is_interactive) \
+ { \
+ if ( ! YY_CURRENT_BUFFER ){ \
+ yyensure_buffer_stack (); \
+ YY_CURRENT_BUFFER_LVALUE = \
+ yy_create_buffer( yyin, YY_BUF_SIZE ); \
+ } \
+ YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \
+ }
+#define yy_set_bol(at_bol) \
+ { \
+ if ( ! YY_CURRENT_BUFFER ){\
+ yyensure_buffer_stack (); \
+ YY_CURRENT_BUFFER_LVALUE = \
+ yy_create_buffer( yyin, YY_BUF_SIZE ); \
+ } \
+ YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \
+ }
+#define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)
+
+/* Begin user sect3 */
+
+#define yywrap() (/*CONSTCOND*/1)
+#define YY_SKIP_YYWRAP
+typedef flex_uint8_t YY_CHAR;
+
+FILE *yyin = NULL, *yyout = NULL;
+
+typedef int yy_state_type;
+
+extern int yylineno;
+int yylineno = 1;
+
+extern char *yytext;
+#ifdef yytext_ptr
+#undef yytext_ptr
+#endif
+#define yytext_ptr yytext
+
+static yy_state_type yy_get_previous_state ( void );
+static yy_state_type yy_try_NUL_trans ( yy_state_type current_state );
+static int yy_get_next_buffer ( void );
+static void yynoreturn yy_fatal_error ( const char* msg );
+
+/* Done after the current pattern has been matched and before the
+ * corresponding action - sets up yytext.
+ */
+#define YY_DO_BEFORE_ACTION \
+ (yytext_ptr) = yy_bp; \
+ yyleng = (int) (yy_cp - yy_bp); \
+ (yy_hold_char) = *yy_cp; \
+ *yy_cp = '\0'; \
+ (yy_c_buf_p) = yy_cp;
+#define YY_NUM_RULES 41
+#define YY_END_OF_BUFFER 42
+/* This struct is not used in this scanner,
+ but its presence is necessary. */
+struct yy_trans_info
+ {
+ flex_int32_t yy_verify;
+ flex_int32_t yy_nxt;
+ };
+static const flex_int16_t yy_accept[1103] =
+ { 0,
+ 0, 0, 42, 40, 1, 1, 40, 10, 40, 10,
+ 40, 40, 40, 35, 40, 40, 11, 11, 40, 40,
+ 40, 1, 0, 0, 0, 0, 10, 9, 10, 12,
+ 0, 0, 10, 10, 0, 11, 0, 35, 4, 34,
+ 0, 0, 35, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 30, 0, 0, 0, 0, 0,
+ 0, 0, 39, 11, 0, 11, 11, 11, 8, 7,
+ 0, 0, 0, 0, 0, 0, 0, 10, 10, 10,
+ 0, 12, 12, 10, 10, 10, 6, 4, 4, 0,
+ 33, 0, 21, 0, 33, 0, 18, 19, 0, 33,
+
+ 0, 31, 0, 23, 0, 33, 0, 22, 29, 0,
+ 25, 24, 20, 0, 33, 0, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 30, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 11, 11, 11,
+ 11, 11, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 10, 10, 10, 0, 0, 12, 12, 10,
+ 10, 10, 4, 2, 33, 33, 33, 33, 33, 21,
+ 26, 0, 33, 33, 33, 33, 33, 33, 33, 33,
+ 18, 19, 33, 0, 33, 33, 33, 33, 33, 33,
+
+ 33, 31, 33, 33, 33, 23, 32, 0, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 22, 29, 33,
+ 33, 33, 33, 33, 24, 20, 27, 0, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 30, 33,
+ 33, 5, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 11, 11, 38, 11, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 10, 0, 3, 12, 10, 4, 4, 33,
+
+ 33, 33, 33, 33, 21, 21, 33, 33, 33, 26,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 18,
+ 19, 18, 28, 0, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 31, 31, 33, 33, 33, 23,
+ 23, 33, 33, 33, 32, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 22, 29, 22, 33, 33, 33,
+ 33, 33, 25, 24, 20, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 30, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 25, 33, 33, 33, 30, 30, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 14, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 11, 38,
+ 38, 38, 38, 37, 0, 11, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 10, 0, 0, 12, 10, 33, 33, 33, 33, 21,
+ 21, 21, 21, 33, 33, 33, 26, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 18, 19,
+
+ 18, 18, 18, 19, 19, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 31, 31, 31, 31, 33, 33, 33, 23,
+ 23, 23, 23, 33, 33, 33, 32, 32, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 22,
+ 29, 22, 22, 22, 29, 29, 33, 33, 33, 33,
+ 33, 25, 24, 20, 25, 25, 24, 24, 20, 20,
+ 33, 33, 33, 27, 33, 33, 33, 33, 33, 33,
+ 27, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 30, 33, 33,
+
+ 33, 25, 33, 27, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 15, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 11, 38, 38, 38,
+ 38, 38, 38, 38, 38, 0, 38, 37, 38, 38,
+ 11, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 10, 12, 10, 33, 33, 33,
+ 33, 21, 21, 33, 33, 33, 26, 26, 26, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 18, 19,
+ 18, 33, 33, 33, 28, 33, 33, 33, 33, 33,
+
+ 33, 28, 33, 33, 33, 33, 33, 28, 33, 33,
+ 33, 31, 31, 33, 33, 33, 23, 23, 33, 33,
+ 33, 32, 32, 32, 32, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 22, 29, 22, 33, 33, 33,
+ 33, 33, 25, 24, 20, 33, 33, 33, 27, 27,
+ 27, 33, 33, 33, 33, 27, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 30, 33, 33, 33, 25, 33, 27, 0, 13,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+
+ 0, 0, 14, 0, 0, 0, 0, 11, 38, 36,
+ 38, 38, 38, 38, 38, 38, 38, 38, 38, 0,
+ 38, 38, 37, 38, 0, 11, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 10, 12,
+ 10, 33, 33, 33, 21, 21, 33, 33, 33, 26,
+ 33, 33, 33, 33, 33, 33, 33, 18, 19, 18,
+ 33, 33, 33, 28, 28, 28, 33, 33, 33, 33,
+ 33, 33, 33, 33, 28, 33, 33, 31, 31, 33,
+ 33, 23, 23, 33, 33, 33, 32, 32, 33, 33,
+ 33, 33, 33, 33, 33, 22, 29, 22, 33, 33,
+
+ 33, 33, 25, 24, 20, 33, 33, 33, 27, 33,
+ 33, 33, 27, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 30, 33, 33, 33, 25, 33,
+ 27, 0, 0, 0, 0, 13, 0, 0, 0, 0,
+ 0, 0, 0, 15, 0, 0, 0, 0, 0, 14,
+ 14, 0, 11, 38, 38, 38, 38, 38, 38, 38,
+ 0, 0, 38, 38, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 33, 21, 21, 33, 33,
+ 26, 33, 18, 19, 18, 33, 33, 33, 28, 33,
+ 33, 33, 33, 33, 28, 31, 31, 23, 23, 33,
+
+ 33, 32, 32, 33, 22, 29, 22, 25, 24, 20,
+ 33, 33, 27, 33, 27, 16, 0, 13, 0, 0,
+ 0, 0, 0, 15, 15, 0, 0, 38, 38, 38,
+ 0, 0, 0, 0, 38, 17, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 26, 33, 33,
+ 28, 33, 32, 32, 27, 0, 13, 13, 0, 0,
+ 38, 38, 38, 0, 0, 38, 0, 0, 0, 17,
+ 0, 0, 0, 0, 0, 0, 0, 28, 0, 38,
+ 38, 38, 0, 38, 0, 17, 0, 0, 0, 0,
+ 38, 38, 0, 38, 0, 17, 17, 0, 0, 0,
+
+ 0, 0
+ } ;
+
+static const YY_CHAR yy_ec[256] =
+ { 0,
+ 1, 1, 1, 1, 1, 1, 1, 1, 2, 3,
+ 1, 4, 5, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 6, 7, 8, 9, 10, 11, 10, 12, 13,
+ 14, 15, 10, 10, 16, 17, 18, 19, 20, 21,
+ 22, 23, 24, 25, 26, 27, 28, 10, 10, 29,
+ 30, 31, 10, 32, 33, 34, 35, 36, 37, 38,
+ 39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
+ 42, 49, 50, 51, 52, 42, 42, 53, 42, 54,
+ 10, 55, 10, 10, 42, 10, 56, 57, 58, 59,
+
+ 60, 61, 62, 63, 64, 42, 65, 66, 67, 68,
+ 69, 70, 42, 71, 72, 73, 74, 42, 42, 75,
+ 42, 76, 10, 77, 10, 78, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 79,
+ 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
+ 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
+ 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
+ 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
+
+ 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
+ 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
+ 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
+ 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
+ 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
+ 79, 79, 79, 79, 79
+ } ;
+
+static const YY_CHAR yy_meta[80] =
+ { 0,
+ 1, 2, 3, 3, 3, 2, 2, 4, 2, 2,
+ 2, 4, 5, 2, 2, 6, 2, 7, 8, 8,
+ 8, 8, 8, 8, 8, 8, 8, 8, 2, 2,
+ 2, 2, 9, 9, 9, 9, 9, 9, 9, 9,
+ 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+ 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+ 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+ 9, 9, 9, 9, 9, 9, 2, 2, 9
+ } ;
+
+static const flex_int16_t yy_base[1137] =
+ { 0,
+ 0, 0, 4195, 7110, 78, 83, 88, 87, 78, 85,
+ 82, 88, 4161, 142, 4151, 90, 86, 206, 259, 4118,
+ 4083, 98, 234, 4083, 72, 109, 116, 7110, 318, 100,
+ 4082, 361, 208, 420, 4017, 92, 463, 205, 4024, 7110,
+ 3977, 222, 0, 3974, 209, 89, 257, 202, 180, 245,
+ 248, 259, 355, 272, 3955, 524, 3987, 83, 280, 311,
+ 274, 585, 7110, 117, 637, 348, 210, 697, 7110, 7110,
+ 3963, 302, 382, 243, 3940, 3933, 371, 251, 356, 757,
+ 3945, 101, 817, 246, 357, 877, 7110, 3938, 252, 920,
+ 3894, 974, 3886, 1017, 397, 447, 3861, 3860, 661, 376,
+
+ 904, 3850, 721, 3841, 448, 451, 1040, 3840, 3825, 1045,
+ 3813, 3796, 3787, 1063, 569, 600, 3784, 1137, 484, 1180,
+ 613, 1221, 748, 380, 566, 347, 591, 907, 654, 462,
+ 3767, 3789, 118, 559, 779, 633, 593, 588, 628, 782,
+ 654, 3776, 775, 3775, 802, 772, 682, 336, 1279, 345,
+ 447, 1322, 3754, 254, 695, 837, 658, 581, 632, 656,
+ 806, 1012, 456, 862, 1365, 3744, 256, 903, 1408, 278,
+ 964, 1451, 3730, 7110, 3689, 1511, 839, 751, 790, 3655,
+ 3633, 1086, 865, 3648, 3645, 868, 812, 3627, 850, 3599,
+ 3559, 3554, 895, 897, 344, 3587, 3580, 885, 900, 892,
+
+ 922, 3526, 1001, 929, 943, 3484, 3483, 1165, 1002, 3500,
+ 3499, 1037, 1074, 945, 3485, 969, 3476, 3439, 3424, 1096,
+ 3450, 410, 3442, 438, 3403, 3397, 3396, 1109, 1104, 3416,
+ 3396, 745, 1554, 1126, 1597, 1199, 1638, 1237, 1696, 1591,
+ 1451, 1224, 1636, 1495, 1673, 1680, 1762, 1836, 1318, 1740,
+ 1703, 7110, 573, 1049, 1161, 1158, 970, 987, 1131, 1017,
+ 1192, 1245, 3385, 3371, 1046, 1269, 1252, 3369, 3358, 1342,
+ 1600, 1403, 1552, 1788, 1263, 1891, 1796, 1934, 3362, 1868,
+ 1238, 1307, 1248, 3350, 3304, 1055, 1352, 1779, 1931, 1391,
+ 1392, 1393, 1983, 3284, 7110, 2026, 2069, 3253, 347, 892,
+
+ 2112, 1392, 1108, 1110, 1248, 1488, 1500, 3239, 3204, 3174,
+ 1541, 3194, 3177, 2112, 1624, 1119, 3145, 1176, 3142, 1861,
+ 1873, 1878, 3104, 1704, 1607, 3071, 2999, 1394, 2951, 2939,
+ 1979, 1503, 1180, 1209, 1896, 1901, 1669, 1259, 1273, 1936,
+ 1971, 1707, 1278, 1296, 2904, 1691, 2927, 2900, 2022, 1731,
+ 1336, 2867, 1403, 2856, 1994, 2027, 2063, 1753, 2851, 716,
+ 2848, 950, 2068, 2106, 2117, 1786, 2836, 2831, 1793, 2833,
+ 2795, 2150, 2191, 1807, 2234, 2138, 2275, 2156, 2333, 2228,
+ 2237, 2273, 2344, 2358, 2367, 2378, 2449, 2523, 2189, 2433,
+ 2413, 1498, 2121, 2020, 2269, 2451, 1769, 2278, 1797, 2271,
+
+ 1426, 1684, 1625, 2322, 1465, 2311, 2342, 2464, 2148, 2457,
+ 2261, 1528, 2388, 2423, 2759, 1179, 1347, 2149, 2296, 2245,
+ 2683, 2676, 1875, 1831, 2535, 2548, 1910, 2480, 2177, 2645,
+ 2637, 2383, 2555, 7110, 2446, 2468, 2600, 2595, 2508, 2546,
+ 2570, 2561, 2456, 2552, 2533, 2540, 1981, 2561, 2614, 2651,
+ 2674, 741, 457, 7110, 2729, 2807, 2597, 661, 2134, 2596,
+ 2579, 1548, 1591, 2330, 2405, 2814, 2604, 1589, 2641, 97,
+ 2882, 2584, 771, 2942, 3003, 3046, 2605, 1637, 1675, 2688,
+ 2695, 2537, 1235, 2639, 2556, 2555, 2710, 2662, 2543, 2538,
+ 2819, 1925, 2402, 2684, 1849, 2508, 1979, 2507, 2715, 2720,
+
+ 2844, 2463, 1448, 2462, 1598, 2832, 2475, 2463, 2837, 2420,
+ 2412, 2894, 2582, 2374, 2365, 3042, 2023, 2628, 2816, 2853,
+ 2025, 2109, 2889, 2919, 2312, 1614, 2857, 2229, 2270, 2929,
+ 3047, 2262, 1615, 2931, 2423, 2439, 3052, 3083, 3071, 2289,
+ 2269, 3106, 2300, 2407, 3094, 2461, 2233, 2530, 2232, 3119,
+ 3124, 3129, 2191, 1714, 2183, 1734, 3117, 2186, 1033, 2175,
+ 1110, 3142, 3147, 3152, 2135, 1803, 2132, 2181, 2103, 2338,
+ 3076, 2090, 2077, 3160, 3148, 2035, 2003, 3172, 3132, 3134,
+ 0, 3213, 1864, 3230, 3173, 3254, 3181, 3312, 3378, 3437,
+ 3511, 3581, 3656, 3723, 3785, 3859, 3933, 3219, 3988, 4050,
+
+ 3236, 2813, 3269, 2888, 2606, 2901, 3277, 3160, 2608, 2666,
+ 3251, 3162, 3338, 3190, 2881, 3264, 7110, 3191, 3285, 1994,
+ 1985, 2987, 3302, 3350, 3326, 3303, 3358, 3340, 1965, 1964,
+ 3341, 3369, 3367, 3038, 3373, 3009, 4107, 3394, 1039, 3416,
+ 4166, 696, 4225, 3442, 3463, 3481, 3497, 3517, 4285, 4346,
+ 4407, 3059, 3408, 3193, 1957, 1942, 3295, 3430, 3539, 3544,
+ 3283, 2258, 3485, 311, 4467, 4510, 4553, 4596, 590, 2669,
+ 3080, 3327, 3553, 3451, 1920, 1919, 3559, 1876, 2372, 805,
+ 1897, 1896, 3572, 3260, 3261, 1801, 3311, 1794, 3565, 3614,
+ 3619, 3505, 1764, 1751, 3626, 3572, 1712, 1704, 3635, 3537,
+
+ 3597, 0, 842, 1683, 1668, 3640, 3543, 0, 962, 3354,
+ 3355, 3645, 3661, 1143, 3420, 3436, 3672, 3681, 3673, 3477,
+ 3547, 3701, 3710, 1613, 2478, 1302, 1608, 1607, 3716, 3707,
+ 3553, 1605, 3554, 1537, 3732, 3737, 3748, 3732, 1529, 1796,
+ 1502, 1830, 3762, 3770, 3777, 3774, 1498, 1459, 3798, 1394,
+ 3135, 1339, 1384, 1374, 3811, 0, 4639, 3784, 1740, 3822,
+ 2122, 3822, 3869, 3895, 3916, 3941, 3970, 3978, 3995, 4699,
+ 4002, 3880, 4083, 4105, 3722, 0, 3634, 0, 1410, 7110,
+ 3904, 3810, 1349, 1342, 3782, 3868, 4066, 4635, 3883, 3654,
+ 3856, 1427, 3908, 1333, 1308, 3944, 4176, 3996, 3768, 3982,
+
+ 1575, 4001, 4071, 4011, 3853, 4024, 1763, 4756, 4088, 7110,
+ 1487, 3423, 4816, 896, 3208, 4876, 4262, 4444, 4919, 4504,
+ 4547, 4591, 4677, 4979, 5040, 5101, 3896, 4040, 4023, 1274,
+ 1266, 3798, 4080, 4509, 4041, 4065, 4639, 1821, 4709, 5144,
+ 5187, 5230, 3632, 3726, 4208, 4213, 2076, 1260, 1207, 4231,
+ 1176, 1123, 4793, 3760, 1108, 3762, 1099, 4236, 4322, 4327,
+ 4093, 1043, 1038, 4332, 994, 3434, 2212, 1028, 1002, 4913,
+ 992, 951, 4552, 3833, 0, 3946, 3953, 4474, 4479, 4041,
+ 4059, 4645, 4716, 2284, 4091, 4106, 4721, 4733, 929, 840,
+ 4919, 4115, 838, 4116, 837, 4738, 4743, 4756, 811, 2240,
+
+ 777, 3157, 4763, 4798, 4803, 2371, 745, 718, 4823, 658,
+ 646, 5138, 0, 4956, 5225, 5181, 5269, 5279, 5291, 5296,
+ 5303, 5315, 5386, 5143, 5350, 5369, 5375, 5394, 5408, 5448,
+ 5413, 642, 4130, 618, 583, 7110, 4253, 5467, 4134, 4243,
+ 5276, 2587, 4250, 4854, 4277, 4128, 4675, 2903, 4432, 7110,
+ 526, 2948, 4859, 1544, 4963, 5522, 1357, 3705, 5565, 5608,
+ 5472, 5669, 5477, 5730, 4466, 5171, 4581, 508, 493, 4435,
+ 5496, 4865, 4634, 5275, 3053, 5506, 5511, 5565, 478, 449,
+ 4864, 5767, 5602, 5607, 5772, 3203, 451, 445, 4924, 443,
+ 442, 5777, 5790, 5795, 5805, 5812, 5835, 5853, 5859, 4140,
+
+ 4164, 4984, 5017, 5866, 5871, 5876, 5881, 5889, 5894, 5899,
+ 411, 381, 5022, 5907, 5913, 7110, 4866, 5027, 5214, 4678,
+ 5521, 3400, 4944, 7110, 370, 3468, 3483, 5950, 5993, 6036,
+ 5987, 6030, 6096, 0, 6139, 7110, 5502, 5131, 4161, 4218,
+ 4832, 5304, 6035, 5313, 4441, 5307, 3527, 5992, 344, 285,
+ 5490, 6133, 6073, 6138, 6176, 5382, 7110, 296, 3629, 3675,
+ 6213, 6256, 6299, 6199, 6342, 6385, 5403, 237, 230, 7110,
+ 5415, 6212, 6255, 5439, 3976, 5380, 3852, 6293, 3928, 6428,
+ 6471, 6514, 6557, 6600, 5441, 5531, 5500, 5100, 5886, 4057,
+ 6643, 6686, 6729, 5612, 5628, 7110, 133, 4058, 6772, 4181,
+
+ 6336, 7110, 6833, 6837, 6846, 6850, 6855, 6864, 6873, 6882,
+ 6891, 6900, 112, 6904, 6913, 6922, 6931, 6940, 6949, 6958,
+ 6967, 6976, 6984, 6993, 7002, 7011, 7020, 7029, 7038, 7047,
+ 7056, 7065, 7074, 7083, 7092, 7100
+ } ;
+
+static const flex_int16_t yy_def[1137] =
+ { 0,
+ 1102, 1, 1102, 1102, 1102, 1102, 1102, 1103, 1104, 1105,
+ 1106, 1102, 1102, 1102, 1102, 1102, 1107, 1107, 1108, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1103, 1102, 1109, 1104,
+ 1102, 1110, 1105, 1111, 1102, 1107, 1108, 14, 1112, 1102,
+ 1113, 1102, 14, 1114, 1114, 1114, 1114, 1114, 1114, 1114,
+ 1114, 1114, 1114, 1114, 1114, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1107, 1115, 1107, 1107, 1107, 1102, 1102,
+ 1116, 1102, 1102, 1102, 1102, 1102, 1102, 1103, 1103, 1103,
+ 1117, 1104, 1104, 1105, 1105, 1105, 1102, 1112, 1118, 56,
+ 1114, 1119, 1114, 1119, 1114, 94, 1114, 1114, 94, 1114,
+
+ 94, 1114, 94, 1114, 94, 1114, 94, 1114, 1114, 94,
+ 1114, 1114, 1114, 94, 1114, 94, 1114, 1114, 118, 118,
+ 118, 118, 118, 1114, 1114, 1114, 1114, 1114, 1114, 1114,
+ 1114, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1107, 68, 1107,
+ 1107, 68, 1116, 1120, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1103, 1103, 80, 1117, 1121, 1104, 83, 1105,
+ 1105, 86, 1122, 1102, 1114, 118, 176, 176, 176, 1114,
+ 1114, 94, 176, 176, 176, 176, 176, 176, 176, 176,
+ 1114, 1114, 1114, 94, 176, 176, 176, 1114, 176, 176,
+
+ 176, 1114, 176, 176, 176, 1114, 1114, 94, 176, 176,
+ 176, 1114, 176, 176, 176, 176, 176, 1114, 1114, 176,
+ 176, 176, 176, 176, 1114, 1114, 1114, 94, 176, 176,
+ 176, 1114, 118, 233, 233, 233, 233, 233, 233, 239,
+ 239, 239, 239, 239, 239, 239, 239, 233, 248, 248,
+ 239, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1107, 68, 1123, 68, 1124, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 80, 1125, 1102, 83, 86, 1122, 1126, 1114,
+
+ 176, 301, 301, 301, 301, 301, 176, 176, 176, 1114,
+ 301, 301, 301, 301, 301, 301, 301, 301, 301, 301,
+ 301, 301, 1114, 94, 176, 176, 176, 301, 301, 301,
+ 301, 301, 301, 301, 301, 301, 301, 301, 301, 301,
+ 301, 176, 176, 176, 1114, 301, 301, 301, 301, 301,
+ 301, 301, 301, 301, 301, 301, 301, 301, 301, 301,
+ 301, 301, 301, 301, 301, 176, 176, 176, 301, 301,
+ 301, 301, 233, 373, 373, 373, 373, 373, 373, 379,
+ 379, 379, 379, 379, 379, 379, 379, 373, 388, 388,
+ 379, 1114, 1114, 1114, 1114, 373, 1114, 1114, 1114, 1114,
+
+ 1114, 1114, 1114, 1114, 1114, 1114, 1114, 1114, 1114, 1114,
+ 373, 1114, 1114, 373, 1114, 1114, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 276, 1123,
+ 1123, 1127, 1128, 1102, 1102, 276, 1129, 1130, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1131, 1132, 1133, 1102, 86, 301, 476, 476, 476, 476,
+ 476, 1114, 1114, 301, 301, 301, 301, 476, 476, 476,
+ 476, 1114, 1114, 476, 476, 476, 476, 476, 476, 476,
+
+ 476, 1114, 1114, 1114, 1114, 176, 176, 176, 301, 301,
+ 301, 301, 476, 476, 476, 476, 1114, 1114, 476, 476,
+ 476, 476, 476, 476, 1114, 1114, 476, 476, 476, 476,
+ 476, 1114, 1114, 301, 301, 301, 301, 301, 476, 476,
+ 476, 476, 1114, 1114, 476, 476, 476, 476, 476, 476,
+ 476, 476, 1114, 1114, 1114, 1114, 476, 476, 476, 476,
+ 476, 476, 476, 476, 1114, 1114, 1114, 1114, 1114, 1114,
+ 301, 301, 301, 301, 476, 476, 476, 476, 1114, 1114,
+ 476, 373, 582, 582, 582, 582, 582, 582, 582, 582,
+ 582, 582, 582, 582, 590, 590, 582, 582, 582, 590,
+
+ 582, 582, 582, 582, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 276, 1102, 1127, 1102,
+ 1134, 1128, 1135, 1123, 1123, 1102, 1123, 1123, 1123, 1102,
+ 456, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1131, 474, 475, 476, 668, 668,
+ 668, 668, 668, 476, 476, 476, 476, 1114, 1114, 668,
+ 668, 668, 668, 668, 668, 668, 668, 668, 668, 668,
+ 668, 301, 301, 301, 301, 476, 476, 476, 476, 1114,
+
+ 1114, 476, 668, 668, 668, 668, 668, 668, 668, 668,
+ 668, 668, 668, 668, 668, 668, 668, 668, 476, 476,
+ 476, 476, 476, 1114, 1114, 668, 668, 668, 668, 668,
+ 668, 668, 668, 668, 668, 668, 668, 668, 668, 668,
+ 668, 668, 668, 668, 668, 476, 476, 476, 476, 1114,
+ 1114, 668, 668, 668, 668, 668, 582, 757, 757, 757,
+ 757, 757, 757, 757, 757, 757, 757, 757, 757, 757,
+ 757, 757, 757, 757, 757, 757, 757, 757, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 276, 1102, 1102,
+ 1127, 1127, 1127, 1128, 1128, 1128, 1123, 1123, 649, 1136,
+ 1136, 1123, 1136, 649, 1102, 651, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1131, 474,
+ 475, 668, 842, 842, 842, 842, 668, 668, 668, 668,
+ 842, 842, 842, 842, 842, 842, 842, 842, 842, 842,
+ 476, 476, 476, 476, 1114, 1114, 668, 668, 668, 668,
+ 842, 842, 842, 842, 842, 842, 842, 842, 842, 842,
+ 842, 842, 842, 668, 668, 668, 668, 668, 842, 842,
+ 842, 842, 842, 842, 842, 842, 842, 842, 842, 842,
+
+ 842, 842, 842, 842, 842, 668, 668, 668, 668, 842,
+ 842, 842, 842, 1114, 1114, 1114, 1114, 1114, 1114, 1114,
+ 1114, 1114, 1114, 1114, 1114, 1114, 1114, 1114, 1114, 1114,
+ 1114, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 826, 1127, 1127, 813, 1128, 1128, 816, 649,
+ 1136, 1102, 1136, 824, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1114, 1114, 1114, 842, 842,
+ 842, 1114, 1114, 1114, 1114, 668, 668, 668, 668, 842,
+ 842, 842, 1114, 1114, 1114, 1114, 1114, 1114, 1114, 842,
+
+ 842, 842, 842, 1114, 1114, 1114, 1114, 1114, 1114, 1114,
+ 842, 842, 842, 1114, 1114, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 813, 816, 649,
+ 1136, 1136, 1136, 962, 824, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1114, 842, 842,
+ 842, 1114, 1114, 1114, 1114, 1102, 1102, 1102, 1102, 1102,
+ 813, 816, 649, 1136, 1033, 824, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1114, 1102, 813,
+ 816, 649, 1033, 824, 1102, 1102, 1102, 1102, 1102, 1102,
+ 813, 816, 1033, 1082, 1102, 1102, 1102, 1102, 1033, 1102,
+
+ 1136, 0, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102
+ } ;
+
+static const flex_int16_t yy_nxt[7190] =
+ { 0,
+ 4, 5, 6, 5, 5, 5, 7, 8, 9, 4,
+ 4, 10, 4, 4, 4, 11, 12, 13, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14, 15, 4,
+ 4, 16, 17, 17, 17, 17, 17, 17, 17, 17,
+ 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
+ 17, 18, 17, 17, 19, 17, 17, 17, 17, 17,
+ 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
+ 17, 17, 17, 18, 17, 17, 20, 21, 17, 22,
+ 22, 22, 22, 22, 22, 22, 22, 22, 22, 23,
+ 23, 23, 23, 23, 28, 31, 28, 35, 63, 22,
+
+ 22, 22, 22, 22, 63, 24, 38, 38, 38, 38,
+ 38, 38, 38, 38, 38, 38, 72, 1102, 1102, 75,
+ 44, 76, 133, 28, 58, 95, 73, 74, 25, 63,
+ 59, 75, 32, 76, 60, 1096, 37, 61, 72, 34,
+ 65, 29, 26, 96, 62, 133, 65, 58, 95, 77,
+ 253, 25, 40, 59, 32, 32, 60, 41, 42, 61,
+ 43, 43, 43, 43, 43, 43, 43, 43, 43, 43,
+ 29, 65, 77, 253, 44, 44, 45, 46, 47, 44,
+ 48, 49, 50, 44, 51, 44, 52, 44, 44, 53,
+ 54, 55, 44, 44, 44, 44, 56, 44, 44, 45,
+
+ 46, 47, 44, 48, 49, 50, 51, 44, 52, 44,
+ 44, 53, 54, 55, 44, 44, 44, 44, 63, 28,
+ 44, 1102, 63, 38, 38, 38, 38, 38, 38, 38,
+ 38, 38, 38, 102, 103, 23, 23, 23, 23, 23,
+ 38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
+ 100, 24, 1086, 93, 66, 102, 101, 28, 28, 1086,
+ 65, 161, 34, 94, 65, 75, 89, 76, 154, 174,
+ 167, 280, 100, 295, 25, 93, 66, 68, 68, 68,
+ 68, 68, 68, 68, 68, 68, 68, 106, 26, 28,
+ 104, 68, 68, 68, 68, 68, 68, 25, 1057, 105,
+
+ 34, 97, 107, 108, 115, 29, 138, 1078, 109, 98,
+ 106, 99, 104, 110, 68, 68, 68, 68, 68, 68,
+ 27, 27, 79, 97, 134, 108, 116, 115, 139, 138,
+ 109, 98, 34, 158, 135, 159, 80, 80, 80, 80,
+ 80, 80, 80, 80, 80, 80, 134, 136, 63, 155,
+ 80, 80, 80, 80, 80, 80, 156, 277, 27, 33,
+ 63, 299, 328, 28, 174, 137, 1078, 329, 28, 330,
+ 136, 155, 1024, 80, 80, 80, 80, 80, 80, 83,
+ 83, 83, 83, 83, 83, 83, 83, 83, 83, 111,
+ 65, 150, 104, 83, 83, 83, 83, 83, 83, 65,
+
+ 157, 105, 65, 1055, 158, 112, 159, 113, 193, 114,
+ 29, 34, 111, 150, 104, 72, 83, 83, 83, 83,
+ 83, 83, 33, 33, 85, 73, 160, 112, 100, 113,
+ 194, 193, 364, 1055, 101, 181, 365, 72, 86, 86,
+ 86, 86, 86, 86, 86, 86, 86, 86, 160, 67,
+ 100, 182, 86, 86, 86, 86, 86, 86, 181, 63,
+ 364, 1052, 1052, 28, 365, 183, 203, 1051, 640, 184,
+ 204, 185, 205, 1051, 1048, 86, 86, 86, 86, 86,
+ 86, 68, 68, 68, 68, 68, 68, 68, 68, 68,
+ 68, 175, 175, 206, 115, 68, 68, 68, 68, 68,
+
+ 68, 65, 234, 1048, 207, 208, 234, 234, 234, 234,
+ 29, 643, 1043, 175, 175, 206, 116, 115, 68, 68,
+ 68, 68, 68, 68, 117, 117, 207, 1043, 950, 117,
+ 117, 117, 117, 117, 117, 117, 117, 117, 117, 117,
+ 117, 117, 118, 119, 119, 119, 120, 121, 122, 123,
+ 119, 119, 117, 117, 117, 117, 119, 119, 119, 119,
+ 119, 119, 124, 125, 126, 117, 127, 117, 128, 117,
+ 117, 129, 130, 131, 117, 117, 117, 117, 117, 119,
+ 119, 119, 119, 119, 119, 124, 125, 126, 127, 117,
+ 128, 117, 117, 129, 130, 131, 117, 117, 117, 117,
+
+ 117, 117, 117, 140, 227, 1018, 254, 141, 142, 143,
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+ 1102, 1102, 1102, 1091, 1091, 1091, 1091, 1091, 1091, 1092,
+ 1092, 1092, 1092, 1092, 1092, 1092, 1092, 1092, 1092, 1102,
+
+ 1102, 1102, 1102, 1092, 1092, 1092, 1092, 1092, 1092, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1092, 1092, 1092, 1092,
+ 1092, 1092, 451, 451, 451, 451, 451, 451, 451, 451,
+ 451, 451, 1102, 1102, 1102, 1102, 451, 451, 451, 451,
+ 451, 451, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 451,
+ 451, 451, 451, 451, 451, 1093, 1093, 1093, 1093, 1093,
+ 1093, 1093, 1093, 1093, 1093, 1102, 1102, 1102, 1102, 1093,
+ 1093, 1093, 1093, 1093, 1093, 1102, 1102, 1102, 1102, 1102,
+
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1093, 1093, 1093, 1093, 1093, 1093, 1094, 1094,
+ 1094, 1094, 1094, 1094, 1094, 1094, 1094, 1094, 1102, 1102,
+ 1102, 1102, 1094, 1094, 1094, 1094, 1094, 1094, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1094, 1094, 1094, 1094, 1094,
+ 1094, 639, 639, 639, 639, 639, 639, 639, 639, 639,
+ 639, 1102, 1102, 1102, 1102, 639, 639, 639, 639, 639,
+ 639, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 639, 639,
+
+ 639, 639, 639, 639, 642, 642, 642, 642, 642, 642,
+ 642, 642, 642, 642, 1102, 1102, 1102, 1102, 642, 642,
+ 642, 642, 642, 642, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 642, 642, 642, 642, 642, 642, 1099, 1099, 1099,
+ 1099, 1099, 1099, 1099, 1099, 1099, 1099, 1102, 1102, 1102,
+ 1102, 1099, 1099, 1099, 1099, 1099, 1099, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1099, 1099, 1099, 1099, 1099, 1099,
+ 1101, 1101, 1101, 1101, 1101, 1101, 1101, 1101, 1101, 1101,
+
+ 1102, 1102, 1102, 1102, 1101, 1101, 1101, 1101, 1101, 1101,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1101, 1101, 1101,
+ 1101, 1101, 1101, 27, 27, 1102, 27, 27, 27, 27,
+ 27, 27, 30, 30, 30, 30, 33, 33, 1102, 33,
+ 33, 33, 33, 33, 33, 36, 1102, 1102, 36, 64,
+ 64, 1102, 64, 64, 67, 67, 1102, 67, 67, 67,
+ 67, 67, 67, 78, 78, 78, 78, 78, 78, 78,
+ 78, 78, 82, 82, 1102, 82, 82, 82, 82, 82,
+ 82, 84, 84, 84, 84, 84, 84, 84, 84, 84,
+
+ 88, 88, 88, 88, 88, 88, 88, 88, 88, 91,
+ 1102, 91, 91, 148, 148, 1102, 148, 148, 148, 148,
+ 148, 148, 153, 153, 153, 153, 153, 153, 153, 153,
+ 153, 166, 166, 166, 166, 166, 166, 166, 166, 166,
+ 173, 173, 173, 173, 173, 173, 173, 173, 173, 175,
+ 175, 1102, 175, 175, 175, 175, 175, 175, 279, 279,
+ 279, 279, 279, 279, 279, 279, 279, 294, 294, 294,
+ 294, 294, 294, 294, 294, 294, 298, 298, 298, 298,
+ 298, 298, 298, 298, 298, 451, 451, 451, 1102, 451,
+ 451, 451, 451, 457, 457, 457, 457, 457, 457, 457,
+
+ 457, 457, 472, 472, 472, 472, 472, 472, 472, 472,
+ 472, 173, 173, 173, 173, 173, 173, 173, 173, 173,
+ 639, 639, 1102, 639, 639, 639, 639, 639, 639, 642,
+ 642, 1102, 642, 642, 642, 642, 642, 642, 457, 457,
+ 457, 457, 457, 457, 457, 457, 457, 279, 279, 279,
+ 279, 279, 279, 279, 279, 279, 27, 27, 27, 27,
+ 27, 27, 27, 27, 27, 472, 472, 472, 472, 472,
+ 472, 472, 472, 472, 294, 294, 294, 294, 294, 294,
+ 294, 294, 294, 811, 811, 811, 811, 811, 811, 811,
+ 811, 811, 814, 814, 814, 814, 814, 814, 814, 814,
+
+ 814, 961, 961, 1102, 1102, 961, 961, 961, 961, 3,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102
+ } ;
+
+static const flex_int16_t yy_chk[7190] =
+ { 0,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 5,
+ 5, 5, 5, 5, 6, 6, 6, 6, 6, 7,
+ 7, 7, 7, 7, 8, 9, 10, 11, 17, 22,
+
+ 22, 22, 22, 22, 36, 7, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 25, 30, 82, 470,
+ 1113, 470, 58, 27, 16, 46, 25, 26, 7, 64,
+ 16, 26, 9, 26, 16, 1097, 11, 16, 25, 10,
+ 17, 8, 7, 46, 16, 58, 36, 16, 46, 26,
+ 133, 7, 14, 16, 30, 82, 16, 14, 14, 16,
+ 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+ 27, 64, 26, 133, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+
+ 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14, 18, 33,
+ 14, 38, 67, 38, 38, 38, 38, 38, 38, 38,
+ 38, 38, 38, 49, 49, 23, 23, 23, 23, 23,
+ 42, 42, 42, 42, 42, 42, 42, 42, 42, 42,
+ 48, 23, 1069, 45, 18, 49, 48, 84, 78, 1068,
+ 18, 74, 33, 45, 67, 74, 89, 74, 154, 89,
+ 167, 154, 48, 167, 23, 45, 18, 19, 19, 19,
+ 19, 19, 19, 19, 19, 19, 19, 51, 23, 170,
+ 50, 19, 19, 19, 19, 19, 19, 23, 1058, 50,
+
+ 84, 47, 51, 52, 54, 78, 61, 1050, 52, 47,
+ 51, 47, 50, 52, 19, 19, 19, 19, 19, 19,
+ 29, 29, 29, 47, 59, 52, 54, 54, 61, 61,
+ 52, 47, 170, 664, 59, 664, 29, 29, 29, 29,
+ 29, 29, 29, 29, 29, 29, 59, 60, 148, 72,
+ 29, 29, 29, 29, 29, 29, 72, 150, 79, 85,
+ 66, 299, 195, 79, 299, 60, 1049, 195, 85, 195,
+ 60, 72, 1025, 29, 29, 29, 29, 29, 29, 32,
+ 32, 32, 32, 32, 32, 32, 32, 32, 32, 53,
+ 148, 66, 126, 32, 32, 32, 32, 32, 32, 150,
+
+ 73, 126, 66, 1012, 73, 53, 73, 53, 100, 53,
+ 79, 85, 53, 66, 126, 77, 32, 32, 32, 32,
+ 32, 32, 34, 34, 34, 77, 73, 53, 124, 53,
+ 100, 100, 222, 1011, 124, 95, 222, 77, 34, 34,
+ 34, 34, 34, 34, 34, 34, 34, 34, 73, 151,
+ 124, 95, 34, 34, 34, 34, 34, 34, 95, 151,
+ 224, 991, 990, 163, 224, 96, 105, 988, 453, 96,
+ 105, 96, 105, 987, 980, 34, 34, 34, 34, 34,
+ 34, 37, 37, 37, 37, 37, 37, 37, 37, 37,
+ 37, 96, 105, 105, 130, 37, 37, 37, 37, 37,
+
+ 37, 151, 119, 979, 106, 106, 119, 119, 119, 119,
+ 163, 453, 969, 96, 105, 105, 130, 130, 37, 37,
+ 37, 37, 37, 37, 56, 56, 106, 968, 951, 56,
+ 56, 56, 56, 56, 56, 56, 56, 56, 56, 56,
+ 56, 56, 56, 56, 56, 56, 56, 56, 56, 56,
+ 56, 56, 56, 56, 56, 56, 56, 56, 56, 56,
+ 56, 56, 56, 56, 56, 56, 56, 56, 56, 56,
+ 56, 56, 56, 56, 56, 56, 56, 56, 56, 56,
+ 56, 56, 56, 56, 56, 56, 56, 56, 56, 56,
+ 56, 56, 56, 56, 56, 56, 56, 56, 56, 56,
+
+ 56, 56, 56, 62, 115, 935, 134, 62, 62, 62,
+ 62, 137, 669, 134, 669, 137, 158, 137, 116, 125,
+ 125, 253, 116, 115, 116, 62, 138, 115, 134, 62,
+ 127, 121, 62, 121, 121, 121, 121, 121, 121, 158,
+ 934, 125, 138, 253, 116, 127, 139, 932, 62, 138,
+ 139, 62, 139, 127, 62, 65, 65, 65, 65, 65,
+ 65, 65, 65, 65, 65, 911, 116, 159, 136, 65,
+ 65, 65, 65, 65, 65, 458, 157, 910, 458, 99,
+ 157, 141, 157, 99, 99, 99, 99, 136, 129, 141,
+ 159, 136, 65, 65, 65, 65, 65, 65, 68, 68,
+
+ 68, 68, 68, 160, 129, 99, 129, 642, 129, 68,
+ 160, 129, 141, 99, 147, 68, 68, 68, 68, 68,
+ 68, 68, 68, 68, 68, 160, 129, 99, 129, 68,
+ 68, 68, 68, 68, 68, 99, 147, 147, 360, 103,
+ 908, 155, 360, 103, 103, 103, 103, 232, 452, 155,
+ 642, 68, 68, 68, 68, 68, 68, 68, 80, 80,
+ 80, 80, 80, 155, 80, 103, 123, 907, 123, 123,
+ 123, 123, 123, 123, 103, 80, 80, 80, 80, 80,
+ 80, 80, 80, 80, 80, 473, 178, 103, 473, 80,
+ 80, 80, 80, 80, 80, 452, 103, 135, 901, 232,
+
+ 140, 135, 143, 135, 140, 140, 140, 140, 146, 178,
+ 143, 80, 80, 80, 80, 80, 80, 80, 83, 83,
+ 83, 83, 83, 135, 161, 179, 146, 680, 161, 680,
+ 161, 146, 899, 143, 83, 83, 83, 83, 83, 83,
+ 83, 83, 83, 83, 83, 135, 145, 187, 179, 83,
+ 83, 83, 83, 83, 83, 156, 145, 177, 895, 893,
+ 156, 177, 156, 177, 164, 703, 890, 703, 145, 164,
+ 187, 83, 83, 83, 83, 83, 83, 83, 86, 86,
+ 86, 86, 86, 183, 156, 189, 186, 183, 86, 183,
+ 186, 186, 186, 186, 300, 86, 86, 86, 86, 86,
+
+ 86, 86, 86, 86, 86, 168, 156, 814, 189, 86,
+ 86, 86, 86, 86, 86, 194, 164, 198, 199, 194,
+ 168, 194, 101, 199, 200, 199, 101, 101, 101, 101,
+ 193, 86, 86, 86, 86, 86, 86, 86, 90, 198,
+ 198, 194, 90, 90, 90, 90, 300, 200, 101, 193,
+ 814, 128, 101, 193, 201, 889, 128, 168, 90, 90,
+ 90, 128, 90, 194, 90, 204, 171, 90, 90, 90,
+ 101, 872, 362, 128, 101, 171, 362, 201, 128, 205,
+ 214, 90, 90, 90, 90, 709, 90, 709, 204, 90,
+ 90, 90, 92, 92, 92, 92, 92, 92, 92, 92,
+
+ 92, 92, 205, 214, 216, 257, 92, 92, 92, 92,
+ 92, 92, 871, 162, 162, 162, 162, 162, 171, 203,
+ 209, 869, 258, 203, 209, 203, 209, 216, 257, 92,
+ 92, 92, 92, 92, 92, 94, 94, 94, 94, 94,
+ 94, 94, 94, 94, 94, 258, 639, 868, 865, 94,
+ 94, 94, 94, 94, 94, 559, 162, 260, 107, 559,
+ 863, 94, 107, 110, 107, 862, 162, 110, 110, 110,
+ 110, 260, 94, 94, 94, 94, 94, 94, 162, 107,
+ 260, 114, 265, 94, 107, 114, 114, 114, 114, 110,
+ 212, 212, 213, 639, 110, 254, 213, 213, 213, 213,
+
+ 265, 286, 107, 254, 182, 265, 107, 114, 182, 286,
+ 182, 110, 212, 114, 220, 114, 110, 254, 220, 220,
+ 220, 220, 229, 286, 182, 857, 229, 228, 229, 114,
+ 182, 228, 561, 228, 855, 114, 561, 114, 118, 118,
+ 118, 118, 118, 303, 234, 304, 852, 182, 234, 234,
+ 234, 234, 182, 228, 316, 118, 118, 118, 118, 118,
+ 118, 118, 118, 118, 118, 714, 303, 714, 304, 118,
+ 118, 118, 118, 118, 118, 228, 256, 316, 259, 255,
+ 256, 416, 256, 208, 255, 259, 255, 208, 208, 208,
+ 208, 118, 118, 118, 118, 118, 118, 118, 120, 851,
+
+ 259, 120, 120, 120, 120, 120, 120, 120, 255, 208,
+ 261, 318, 333, 120, 261, 120, 261, 236, 208, 236,
+ 236, 236, 236, 236, 236, 242, 242, 242, 242, 242,
+ 255, 208, 849, 416, 318, 333, 120, 483, 120, 122,
+ 208, 334, 122, 122, 122, 122, 122, 122, 122, 305,
+ 305, 305, 305, 305, 122, 238, 122, 238, 238, 238,
+ 238, 238, 238, 262, 334, 275, 283, 262, 242, 262,
+ 267, 283, 242, 283, 267, 275, 267, 122, 242, 122,
+ 149, 149, 149, 149, 149, 848, 281, 266, 831, 483,
+ 242, 266, 281, 266, 242, 338, 830, 149, 149, 149,
+
+ 149, 149, 149, 149, 149, 149, 149, 266, 281, 339,
+ 343, 149, 149, 149, 149, 149, 149, 275, 338, 249,
+ 249, 249, 249, 249, 726, 282, 726, 795, 344, 282,
+ 266, 282, 339, 343, 149, 149, 149, 149, 149, 149,
+ 152, 152, 152, 152, 152, 152, 152, 152, 152, 152,
+ 249, 344, 794, 282, 152, 152, 152, 152, 152, 152,
+ 270, 752, 784, 752, 270, 270, 270, 270, 957, 783,
+ 287, 351, 249, 249, 287, 282, 287, 152, 152, 152,
+ 152, 152, 152, 165, 165, 165, 165, 165, 165, 165,
+ 165, 165, 165, 754, 351, 292, 417, 165, 165, 165,
+
+ 165, 165, 165, 753, 272, 272, 272, 272, 272, 290,
+ 302, 957, 328, 290, 302, 290, 302, 328, 417, 328,
+ 165, 165, 165, 165, 165, 165, 169, 169, 169, 169,
+ 169, 169, 169, 169, 169, 169, 291, 292, 353, 272,
+ 169, 169, 169, 169, 169, 169, 291, 292, 750, 792,
+ 503, 792, 241, 241, 241, 241, 241, 272, 291, 292,
+ 779, 353, 272, 169, 169, 169, 169, 169, 169, 172,
+ 172, 172, 172, 172, 172, 172, 172, 172, 172, 401,
+ 401, 748, 779, 172, 172, 172, 172, 172, 172, 306,
+ 306, 306, 306, 306, 811, 241, 244, 244, 244, 244,
+
+ 244, 401, 503, 241, 405, 241, 172, 172, 172, 172,
+ 172, 172, 176, 176, 176, 176, 176, 241, 307, 405,
+ 747, 332, 307, 741, 307, 241, 332, 405, 332, 176,
+ 176, 176, 176, 176, 176, 176, 176, 176, 176, 244,
+ 244, 811, 392, 176, 176, 176, 176, 176, 176, 244,
+ 739, 954, 392, 273, 273, 273, 273, 273, 734, 311,
+ 412, 244, 244, 311, 392, 311, 176, 176, 176, 176,
+ 176, 176, 233, 233, 233, 233, 233, 233, 233, 233,
+ 233, 233, 412, 412, 273, 462, 233, 233, 233, 233,
+ 233, 233, 240, 240, 240, 240, 240, 801, 954, 801,
+
+ 505, 271, 271, 271, 271, 271, 273, 273, 462, 233,
+ 233, 233, 233, 233, 233, 235, 526, 533, 235, 235,
+ 235, 235, 235, 235, 235, 325, 732, 240, 463, 325,
+ 235, 325, 235, 728, 727, 240, 468, 243, 243, 243,
+ 243, 243, 315, 468, 271, 240, 315, 315, 315, 315,
+ 240, 463, 505, 235, 271, 235, 237, 240, 468, 237,
+ 237, 237, 237, 237, 237, 237, 271, 724, 526, 533,
+ 403, 237, 478, 237, 245, 245, 245, 245, 245, 403,
+ 243, 246, 246, 246, 246, 246, 402, 337, 705, 243,
+ 243, 337, 403, 337, 237, 478, 237, 239, 239, 239,
+
+ 239, 239, 243, 704, 251, 251, 251, 251, 251, 346,
+ 479, 243, 245, 346, 239, 346, 554, 245, 239, 239,
+ 239, 239, 324, 698, 246, 342, 324, 245, 324, 246,
+ 342, 697, 342, 479, 246, 245, 556, 402, 402, 245,
+ 239, 250, 250, 250, 250, 250, 246, 251, 324, 350,
+ 239, 246, 251, 350, 350, 350, 350, 251, 759, 402,
+ 759, 759, 239, 247, 247, 247, 247, 247, 554, 251,
+ 324, 358, 250, 694, 251, 358, 358, 358, 358, 250,
+ 288, 288, 288, 288, 288, 807, 693, 807, 556, 274,
+ 274, 274, 274, 274, 250, 250, 247, 277, 277, 277,
+
+ 277, 277, 250, 277, 366, 566, 247, 277, 366, 277,
+ 366, 369, 247, 397, 247, 369, 247, 369, 740, 247,
+ 688, 397, 740, 397, 274, 374, 288, 686, 247, 374,
+ 374, 374, 374, 288, 247, 397, 247, 248, 248, 248,
+ 248, 248, 274, 397, 838, 399, 838, 274, 288, 424,
+ 277, 399, 742, 424, 248, 424, 742, 566, 248, 248,
+ 248, 248, 320, 320, 320, 320, 320, 399, 248, 280,
+ 280, 280, 280, 280, 321, 321, 321, 321, 321, 322,
+ 322, 322, 322, 322, 495, 280, 583, 583, 583, 583,
+ 248, 248, 276, 276, 276, 276, 276, 335, 335, 335,
+
+ 335, 335, 336, 336, 336, 336, 336, 495, 280, 276,
+ 276, 276, 276, 276, 276, 276, 276, 276, 276, 682,
+ 681, 423, 280, 276, 276, 276, 276, 276, 276, 423,
+ 678, 280, 289, 289, 289, 289, 289, 340, 340, 340,
+ 340, 340, 427, 423, 676, 675, 276, 276, 276, 276,
+ 276, 276, 278, 278, 278, 278, 278, 278, 278, 278,
+ 278, 278, 656, 492, 427, 427, 278, 278, 278, 278,
+ 278, 278, 341, 341, 341, 341, 341, 655, 289, 492,
+ 331, 331, 331, 331, 331, 289, 492, 630, 629, 278,
+ 278, 278, 278, 278, 278, 355, 355, 355, 355, 355,
+
+ 289, 293, 293, 293, 293, 293, 293, 293, 293, 293,
+ 293, 331, 621, 447, 497, 293, 293, 293, 293, 293,
+ 293, 620, 577, 349, 349, 349, 349, 349, 356, 356,
+ 356, 356, 356, 331, 331, 447, 447, 497, 293, 293,
+ 293, 293, 293, 293, 296, 296, 296, 296, 296, 296,
+ 296, 296, 296, 296, 576, 517, 394, 521, 296, 296,
+ 296, 296, 296, 296, 357, 357, 357, 357, 357, 363,
+ 363, 363, 363, 363, 394, 349, 349, 517, 517, 394,
+ 521, 296, 296, 296, 296, 296, 296, 297, 297, 297,
+ 297, 297, 297, 297, 297, 297, 297, 349, 847, 573,
+
+ 847, 297, 297, 297, 297, 297, 297, 364, 364, 364,
+ 364, 364, 572, 314, 314, 314, 314, 314, 365, 365,
+ 365, 365, 365, 393, 297, 297, 297, 297, 297, 297,
+ 301, 301, 301, 301, 301, 301, 301, 301, 301, 301,
+ 761, 522, 761, 761, 301, 301, 301, 301, 301, 301,
+ 314, 372, 372, 372, 372, 372, 376, 569, 376, 376,
+ 376, 376, 376, 376, 522, 393, 314, 301, 301, 301,
+ 301, 301, 301, 314, 378, 393, 378, 378, 378, 378,
+ 378, 378, 409, 568, 459, 372, 567, 393, 459, 565,
+ 389, 389, 389, 389, 389, 429, 560, 418, 409, 429,
+
+ 409, 429, 409, 418, 372, 409, 459, 558, 372, 373,
+ 373, 373, 373, 373, 373, 373, 373, 373, 373, 418,
+ 409, 389, 409, 373, 373, 373, 373, 373, 373, 380,
+ 380, 380, 380, 380, 867, 568, 867, 555, 381, 381,
+ 381, 381, 381, 389, 389, 553, 373, 373, 373, 373,
+ 373, 373, 375, 549, 547, 375, 375, 375, 375, 375,
+ 375, 375, 900, 420, 380, 528, 900, 375, 420, 375,
+ 420, 395, 380, 400, 382, 382, 382, 382, 382, 411,
+ 398, 381, 380, 411, 411, 411, 411, 380, 528, 381,
+ 375, 381, 375, 377, 380, 541, 377, 377, 377, 377,
+
+ 377, 377, 377, 381, 662, 395, 529, 884, 377, 884,
+ 377, 381, 662, 406, 419, 540, 532, 382, 419, 400,
+ 419, 382, 398, 395, 404, 400, 662, 382, 395, 529,
+ 398, 377, 398, 377, 379, 379, 379, 379, 379, 382,
+ 570, 400, 419, 382, 398, 383, 383, 383, 383, 383,
+ 406, 379, 398, 543, 543, 379, 379, 379, 379, 384,
+ 384, 384, 384, 384, 419, 406, 525, 404, 385, 385,
+ 385, 385, 385, 406, 679, 543, 404, 379, 464, 386,
+ 386, 386, 386, 386, 464, 515, 407, 379, 383, 404,
+ 413, 407, 570, 906, 514, 906, 407, 383, 383, 379,
+
+ 464, 432, 384, 384, 493, 432, 385, 432, 407, 544,
+ 383, 385, 384, 407, 391, 391, 391, 391, 391, 383,
+ 413, 385, 386, 465, 384, 384, 679, 386, 465, 385,
+ 465, 511, 386, 385, 390, 390, 390, 390, 390, 510,
+ 493, 414, 413, 413, 386, 414, 414, 414, 414, 386,
+ 387, 387, 387, 387, 387, 535, 493, 391, 414, 410,
+ 544, 544, 391, 493, 435, 390, 408, 391, 435, 396,
+ 435, 536, 390, 396, 396, 396, 396, 414, 535, 391,
+ 725, 414, 544, 387, 391, 508, 436, 390, 390, 396,
+ 436, 410, 436, 387, 536, 390, 546, 507, 428, 387,
+
+ 443, 387, 428, 387, 428, 396, 387, 410, 408, 410,
+ 443, 410, 396, 408, 410, 387, 504, 502, 408, 546,
+ 428, 387, 443, 387, 388, 388, 388, 388, 388, 410,
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+ 920, 925, 925, 925, 925, 925, 0, 921, 0, 922,
+ 0, 1046, 1046, 920, 922, 921, 919, 0, 0, 922,
+ 926, 926, 926, 926, 926, 0, 927, 927, 927, 927,
+ 927, 922, 1076, 0, 0, 0, 922, 923, 923, 923,
+ 923, 923, 0, 0, 0, 928, 928, 928, 928, 928,
+
+ 1056, 0, 0, 0, 925, 1056, 0, 1056, 926, 929,
+ 929, 929, 929, 929, 931, 931, 931, 931, 931, 927,
+ 923, 1067, 0, 926, 927, 1076, 1067, 0, 1067, 927,
+ 0, 926, 928, 1071, 1076, 0, 923, 1071, 923, 1071,
+ 923, 927, 0, 923, 0, 0, 927, 1076, 928, 930,
+ 930, 930, 930, 930, 0, 928, 0, 1074, 923, 1085,
+ 923, 1074, 929, 1074, 1085, 0, 1085, 931, 938, 938,
+ 938, 938, 938, 961, 961, 961, 961, 961, 963, 963,
+ 963, 963, 963, 930, 0, 961, 0, 0, 0, 0,
+ 963, 1051, 1051, 1051, 1051, 1051, 0, 971, 971, 971,
+
+ 971, 971, 930, 0, 0, 0, 930, 976, 976, 976,
+ 976, 976, 977, 977, 977, 977, 977, 938, 1087, 0,
+ 1037, 938, 1087, 1021, 1087, 1037, 961, 1037, 971, 0,
+ 0, 963, 1086, 1086, 1086, 1086, 1086, 0, 0, 938,
+ 956, 956, 956, 956, 956, 956, 956, 956, 956, 956,
+ 971, 971, 1037, 0, 956, 956, 956, 956, 956, 956,
+ 976, 0, 0, 0, 0, 977, 978, 978, 978, 978,
+ 978, 1021, 0, 0, 1037, 1021, 0, 956, 956, 956,
+ 956, 956, 956, 959, 959, 959, 959, 959, 959, 959,
+ 959, 959, 959, 1021, 0, 0, 0, 959, 959, 959,
+
+ 959, 959, 959, 983, 983, 983, 983, 983, 984, 984,
+ 984, 984, 984, 1094, 1094, 1094, 1094, 1094, 0, 978,
+ 959, 959, 959, 959, 959, 959, 960, 960, 960, 960,
+ 960, 960, 960, 960, 960, 960, 0, 0, 0, 0,
+ 960, 960, 960, 960, 960, 960, 1095, 0, 0, 0,
+ 0, 1095, 0, 1095, 0, 0, 983, 0, 0, 0,
+ 0, 984, 0, 960, 960, 960, 960, 960, 960, 962,
+ 962, 962, 962, 962, 962, 962, 962, 962, 962, 962,
+ 962, 962, 962, 962, 962, 962, 962, 962, 962, 962,
+ 962, 962, 962, 962, 962, 962, 962, 962, 962, 962,
+
+ 962, 962, 962, 962, 962, 962, 962, 962, 962, 962,
+ 962, 962, 962, 962, 962, 962, 962, 962, 962, 962,
+ 962, 962, 962, 962, 962, 962, 962, 962, 962, 962,
+ 962, 962, 962, 962, 962, 962, 962, 962, 962, 962,
+ 962, 962, 962, 962, 962, 962, 962, 962, 964, 964,
+ 964, 964, 964, 964, 964, 964, 964, 964, 0, 0,
+ 0, 0, 964, 964, 964, 964, 964, 964, 982, 982,
+ 982, 982, 982, 985, 985, 985, 985, 985, 992, 992,
+ 992, 992, 992, 0, 0, 964, 964, 964, 964, 964,
+ 964, 993, 993, 993, 993, 993, 994, 994, 994, 994,
+
+ 994, 0, 0, 0, 0, 982, 995, 995, 995, 995,
+ 995, 0, 992, 996, 996, 996, 996, 996, 0, 0,
+ 0, 982, 993, 0, 0, 0, 985, 0, 982, 0,
+ 994, 992, 0, 0, 0, 992, 997, 997, 997, 997,
+ 997, 0, 0, 0, 993, 993, 0, 0, 0, 994,
+ 0, 0, 0, 994, 998, 998, 998, 998, 998, 995,
+ 999, 999, 999, 999, 999, 0, 996, 1004, 1004, 1004,
+ 1004, 1004, 1005, 1005, 1005, 1005, 1005, 1006, 1006, 1006,
+ 1006, 1006, 1007, 1007, 1007, 1007, 1007, 0, 1089, 997,
+ 1008, 1008, 1008, 1008, 1008, 1009, 1009, 1009, 1009, 1009,
+
+ 1010, 1010, 1010, 1010, 1010, 0, 0, 998, 1014, 1014,
+ 1014, 1014, 1014, 999, 1015, 1015, 1015, 1015, 1015, 1004,
+ 1004, 0, 0, 0, 0, 1005, 0, 0, 0, 0,
+ 1006, 0, 0, 0, 0, 1007, 1089, 0, 0, 0,
+ 1089, 1004, 1014, 1008, 0, 0, 0, 0, 1009, 0,
+ 0, 0, 0, 1010, 0, 0, 0, 0, 1089, 0,
+ 0, 1014, 0, 0, 0, 1014, 0, 1015, 1028, 1028,
+ 1028, 1028, 1028, 1028, 1028, 1028, 1028, 1028, 0, 0,
+ 0, 0, 1028, 1028, 1028, 1028, 1028, 1028, 1031, 1031,
+ 1031, 1031, 1031, 1048, 1048, 1048, 1048, 1048, 0, 0,
+
+ 1031, 0, 0, 0, 0, 1028, 1028, 1028, 1028, 1028,
+ 1028, 1029, 1029, 1029, 1029, 1029, 1029, 1029, 1029, 1029,
+ 1029, 0, 0, 0, 0, 1029, 1029, 1029, 1029, 1029,
+ 1029, 1032, 1032, 1032, 1032, 1032, 1043, 1043, 1043, 1043,
+ 1043, 1031, 0, 1032, 0, 0, 1048, 0, 1029, 1029,
+ 1029, 1029, 1029, 1029, 1030, 1030, 1030, 1030, 1030, 1030,
+ 1030, 1030, 1030, 1030, 0, 0, 0, 0, 1030, 1030,
+ 1030, 1030, 1030, 1030, 1053, 1053, 1053, 1053, 1053, 0,
+ 1043, 0, 0, 0, 1032, 0, 0, 0, 0, 1043,
+ 0, 1030, 1030, 1030, 1030, 1030, 1030, 1033, 1033, 1033,
+
+ 1033, 1033, 1043, 0, 0, 0, 0, 0, 0, 1033,
+ 0, 0, 0, 0, 1033, 1033, 1033, 1033, 1033, 1033,
+ 1033, 1033, 1033, 1033, 0, 0, 0, 1053, 1033, 1033,
+ 1033, 1033, 1033, 1033, 1052, 1052, 1052, 1052, 1052, 1054,
+ 1054, 1054, 1054, 1054, 0, 0, 0, 0, 0, 0,
+ 1033, 1033, 1033, 1033, 1033, 1033, 1033, 1035, 1035, 1035,
+ 1035, 1035, 1035, 1035, 1035, 1035, 1035, 0, 1052, 0,
+ 0, 1035, 1035, 1035, 1035, 1035, 1035, 1055, 1055, 1055,
+ 1055, 1055, 0, 0, 0, 0, 0, 1052, 0, 0,
+ 0, 1052, 1054, 0, 1035, 1035, 1035, 1035, 1035, 1035,
+
+ 1064, 1064, 1064, 1064, 1064, 0, 0, 0, 0, 0,
+ 0, 0, 1064, 1072, 1072, 1072, 1072, 1072, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 1055, 1061, 1061, 1061, 1061, 1061, 1061, 1061, 1061, 1061,
+ 1061, 0, 0, 0, 0, 1061, 1061, 1061, 1061, 1061,
+ 1061, 0, 0, 1064, 0, 0, 1073, 1073, 1073, 1073,
+ 1073, 0, 1072, 0, 0, 0, 1072, 0, 1061, 1061,
+ 1061, 1061, 1061, 1061, 1062, 1062, 1062, 1062, 1062, 1062,
+ 1062, 1062, 1062, 1062, 1072, 0, 0, 0, 1062, 1062,
+ 1062, 1062, 1062, 1062, 1078, 1078, 1078, 1078, 1078, 0,
+
+ 0, 0, 0, 0, 0, 1073, 0, 0, 0, 1073,
+ 0, 1062, 1062, 1062, 1062, 1062, 1062, 1063, 1063, 1063,
+ 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1073, 0, 0,
+ 0, 1063, 1063, 1063, 1063, 1063, 1063, 1101, 1101, 1101,
+ 1101, 1101, 0, 0, 0, 0, 0, 1078, 0, 1101,
+ 0, 0, 0, 0, 1063, 1063, 1063, 1063, 1063, 1063,
+ 1065, 1065, 1065, 1065, 1065, 1065, 1065, 1065, 1065, 1065,
+ 0, 0, 0, 0, 1065, 1065, 1065, 1065, 1065, 1065,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 1101, 0, 0, 0, 0, 0, 0, 1065, 1065, 1065,
+
+ 1065, 1065, 1065, 1066, 1066, 1066, 1066, 1066, 1066, 1066,
+ 1066, 1066, 1066, 0, 0, 0, 0, 1066, 1066, 1066,
+ 1066, 1066, 1066, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 1066, 1066, 1066, 1066, 1066, 1066, 1080, 1080, 1080, 1080,
+ 1080, 1080, 1080, 1080, 1080, 1080, 0, 0, 0, 0,
+ 1080, 1080, 1080, 1080, 1080, 1080, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 1080, 1080, 1080, 1080, 1080, 1080, 1081,
+ 1081, 1081, 1081, 1081, 1081, 1081, 1081, 1081, 1081, 0,
+
+ 0, 0, 0, 1081, 1081, 1081, 1081, 1081, 1081, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 1081, 1081, 1081, 1081,
+ 1081, 1081, 1082, 1082, 1082, 1082, 1082, 1082, 1082, 1082,
+ 1082, 1082, 0, 0, 0, 0, 1082, 1082, 1082, 1082,
+ 1082, 1082, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 1082,
+ 1082, 1082, 1082, 1082, 1082, 1083, 1083, 1083, 1083, 1083,
+ 1083, 1083, 1083, 1083, 1083, 0, 0, 0, 0, 1083,
+ 1083, 1083, 1083, 1083, 1083, 0, 0, 0, 0, 0,
+
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 1083, 1083, 1083, 1083, 1083, 1083, 1084, 1084,
+ 1084, 1084, 1084, 1084, 1084, 1084, 1084, 1084, 0, 0,
+ 0, 0, 1084, 1084, 1084, 1084, 1084, 1084, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 1084, 1084, 1084, 1084, 1084,
+ 1084, 1091, 1091, 1091, 1091, 1091, 1091, 1091, 1091, 1091,
+ 1091, 0, 0, 0, 0, 1091, 1091, 1091, 1091, 1091,
+ 1091, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 1091, 1091,
+
+ 1091, 1091, 1091, 1091, 1092, 1092, 1092, 1092, 1092, 1092,
+ 1092, 1092, 1092, 1092, 0, 0, 0, 0, 1092, 1092,
+ 1092, 1092, 1092, 1092, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 1092, 1092, 1092, 1092, 1092, 1092, 1093, 1093, 1093,
+ 1093, 1093, 1093, 1093, 1093, 1093, 1093, 0, 0, 0,
+ 0, 1093, 1093, 1093, 1093, 1093, 1093, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 1093, 1093, 1093, 1093, 1093, 1093,
+ 1099, 1099, 1099, 1099, 1099, 1099, 1099, 1099, 1099, 1099,
+
+ 0, 0, 0, 0, 1099, 1099, 1099, 1099, 1099, 1099,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 1099, 1099, 1099,
+ 1099, 1099, 1099, 1103, 1103, 0, 1103, 1103, 1103, 1103,
+ 1103, 1103, 1104, 1104, 1104, 1104, 1105, 1105, 0, 1105,
+ 1105, 1105, 1105, 1105, 1105, 1106, 0, 0, 1106, 1107,
+ 1107, 0, 1107, 1107, 1108, 1108, 0, 1108, 1108, 1108,
+ 1108, 1108, 1108, 1109, 1109, 1109, 1109, 1109, 1109, 1109,
+ 1109, 1109, 1110, 1110, 0, 1110, 1110, 1110, 1110, 1110,
+ 1110, 1111, 1111, 1111, 1111, 1111, 1111, 1111, 1111, 1111,
+
+ 1112, 1112, 1112, 1112, 1112, 1112, 1112, 1112, 1112, 1114,
+ 0, 1114, 1114, 1115, 1115, 0, 1115, 1115, 1115, 1115,
+ 1115, 1115, 1116, 1116, 1116, 1116, 1116, 1116, 1116, 1116,
+ 1116, 1117, 1117, 1117, 1117, 1117, 1117, 1117, 1117, 1117,
+ 1118, 1118, 1118, 1118, 1118, 1118, 1118, 1118, 1118, 1119,
+ 1119, 0, 1119, 1119, 1119, 1119, 1119, 1119, 1120, 1120,
+ 1120, 1120, 1120, 1120, 1120, 1120, 1120, 1121, 1121, 1121,
+ 1121, 1121, 1121, 1121, 1121, 1121, 1122, 1122, 1122, 1122,
+ 1122, 1122, 1122, 1122, 1122, 1123, 1123, 1123, 0, 1123,
+ 1123, 1123, 1123, 1124, 1124, 1124, 1124, 1124, 1124, 1124,
+
+ 1124, 1124, 1125, 1125, 1125, 1125, 1125, 1125, 1125, 1125,
+ 1125, 1126, 1126, 1126, 1126, 1126, 1126, 1126, 1126, 1126,
+ 1127, 1127, 0, 1127, 1127, 1127, 1127, 1127, 1127, 1128,
+ 1128, 0, 1128, 1128, 1128, 1128, 1128, 1128, 1129, 1129,
+ 1129, 1129, 1129, 1129, 1129, 1129, 1129, 1130, 1130, 1130,
+ 1130, 1130, 1130, 1130, 1130, 1130, 1131, 1131, 1131, 1131,
+ 1131, 1131, 1131, 1131, 1131, 1132, 1132, 1132, 1132, 1132,
+ 1132, 1132, 1132, 1132, 1133, 1133, 1133, 1133, 1133, 1133,
+ 1133, 1133, 1133, 1134, 1134, 1134, 1134, 1134, 1134, 1134,
+ 1134, 1134, 1135, 1135, 1135, 1135, 1135, 1135, 1135, 1135,
+
+ 1135, 1136, 1136, 0, 0, 1136, 1136, 1136, 1136, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102
+ } ;
+
+static yy_state_type yy_last_accepting_state;
+static char *yy_last_accepting_cpos;
+
+extern int yy_flex_debug;
+int yy_flex_debug = 0;
+
+/* The intent behind this definition is that it'll catch
+ * any uses of REJECT which flex missed.
+ */
+#define REJECT reject_used_but_not_detected
+#define yymore() yymore_used_but_not_detected
+#define YY_MORE_ADJ 0
+#define YY_RESTORE_YY_MORE_OFFSET
+char *yytext;
+#line 1 "css.l"
+
+#line 13 "css.l"
+/* Lex source for CSS tokenizing.
+ Taken from http://www.w3.org/TR/CSS21/grammar.html#q2
+ Copyright (C) 2006, 2009-2011, 2015, 2018-2020 Free Software
+ Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at
+your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#define YY_NO_INPUT
+
+#include "css-tokens.h"
+
+#if defined __clang__ || __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
+ #pragma GCC diagnostic ignored "-Wunknown-pragmas" // clang mourns about the next one
+ #pragma GCC diagnostic ignored "-Wunused-function"
+ #pragma GCC diagnostic ignored "-Wunused-macros"
+ #pragma GCC diagnostic ignored "-Wunused-parameter"
+ #pragma GCC diagnostic ignored "-Wsign-compare"
+ #pragma GCC diagnostic ignored "-Wswitch-default"
+ #pragma GCC diagnostic ignored "-Wunreachable-code" // clang
+ #pragma clang diagnostic ignored "-Wshorten-64-to-32"
+ #ifndef __clang__
+ #pragma GCC diagnostic ignored "-Wsuggest-attribute=pure"
+ #endif
+#endif
+
+#line 2452 "css.c"
+#line 2453 "css.c"
+
+#define INITIAL 0
+
+#ifndef YY_NO_UNISTD_H
+/* Special case for "unistd.h", since it is non-ANSI. We include it way
+ * down here because we want the user's section 1 to have been scanned first.
+ * The user has a chance to override it with an option.
+ */
+#include <unistd.h>
+#endif
+
+#ifndef YY_EXTRA_TYPE
+#define YY_EXTRA_TYPE void *
+#endif
+
+static int yy_init_globals ( void );
+
+/* Accessor methods to globals.
+ These are made visible to non-reentrant scanners for convenience. */
+
+int yylex_destroy ( void );
+
+int yyget_debug ( void );
+
+void yyset_debug ( int debug_flag );
+
+YY_EXTRA_TYPE yyget_extra ( void );
+
+void yyset_extra ( YY_EXTRA_TYPE user_defined );
+
+FILE *yyget_in ( void );
+
+void yyset_in ( FILE * _in_str );
+
+FILE *yyget_out ( void );
+
+void yyset_out ( FILE * _out_str );
+
+ int yyget_leng ( void );
+
+char *yyget_text ( void );
+
+int yyget_lineno ( void );
+
+void yyset_lineno ( int _line_number );
+
+/* Macros after this point can all be overridden by user definitions in
+ * section 1.
+ */
+
+#ifndef YY_SKIP_YYWRAP
+#ifdef __cplusplus
+extern "C" int yywrap ( void );
+#else
+extern int yywrap ( void );
+#endif
+#endif
+
+#ifndef YY_NO_UNPUT
+
+#endif
+
+#ifndef yytext_ptr
+static void yy_flex_strncpy ( char *, const char *, int );
+#endif
+
+#ifdef YY_NEED_STRLEN
+static int yy_flex_strlen ( const char * );
+#endif
+
+#ifndef YY_NO_INPUT
+#ifdef __cplusplus
+static int yyinput ( void );
+#else
+static int input ( void );
+#endif
+
+#endif
+
+/* Amount of stuff to slurp up with each read. */
+#ifndef YY_READ_BUF_SIZE
+#ifdef __ia64__
+/* On IA-64, the buffer size is 16k, not 8k */
+#define YY_READ_BUF_SIZE 16384
+#else
+#define YY_READ_BUF_SIZE 8192
+#endif /* __ia64__ */
+#endif
+
+/* Copy whatever the last rule matched to the standard output. */
+#ifndef ECHO
+/* This used to be an fputs(), but since the string might contain NUL's,
+ * we now use fwrite().
+ */
+#define ECHO do { if (fwrite( yytext, (size_t) yyleng, 1, yyout )) {} } while (0)
+#endif
+
+/* Gets input and stuffs it into "buf". number of characters read, or YY_NULL,
+ * is returned in "result".
+ */
+#ifndef YY_INPUT
+#define YY_INPUT(buf,result,max_size) \
+ if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \
+ { \
+ int c = '*'; \
+ int n; \
+ for ( n = 0; n < max_size && \
+ (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
+ buf[n] = (char) c; \
+ if ( c == '\n' ) \
+ buf[n++] = (char) c; \
+ if ( c == EOF && ferror( yyin ) ) \
+ YY_FATAL_ERROR( "input in flex scanner failed" ); \
+ result = n; \
+ } \
+ else \
+ { \
+ errno=0; \
+ while ( (result = (int) fread(buf, 1, (yy_size_t) max_size, yyin)) == 0 && ferror(yyin)) \
+ { \
+ if( errno != EINTR) \
+ { \
+ YY_FATAL_ERROR( "input in flex scanner failed" ); \
+ break; \
+ } \
+ errno=0; \
+ clearerr(yyin); \
+ } \
+ }\
+\
+
+#endif
+
+/* No semi-colon after return; correct usage is to write "yyterminate();" -
+ * we don't want an extra ';' after the "return" because that will cause
+ * some compilers to complain about unreachable statements.
+ */
+#ifndef yyterminate
+#define yyterminate() return YY_NULL
+#endif
+
+/* Number of entries by which start-condition stack grows. */
+#ifndef YY_START_STACK_INCR
+#define YY_START_STACK_INCR 25
+#endif
+
+/* Report a fatal error. */
+#ifndef YY_FATAL_ERROR
+#define YY_FATAL_ERROR(msg) yy_fatal_error( msg )
+#endif
+
+/* end tables serialization structures and prototypes */
+
+/* Default declaration of generated scanner - a define so the user can
+ * easily add parameters.
+ */
+#ifndef YY_DECL
+#define YY_DECL_IS_OURS 1
+
+extern int yylex (void);
+
+#define YY_DECL int yylex (void)
+#endif /* !YY_DECL */
+
+/* Code executed at the beginning of each rule, after yytext and yyleng
+ * have been set up.
+ */
+#ifndef YY_USER_ACTION
+#define YY_USER_ACTION
+#endif
+
+/* Code executed at the end of each rule. */
+#ifndef YY_BREAK
+#define YY_BREAK /*LINTED*/break;
+#endif
+
+#define YY_RULE_SETUP \
+ YY_USER_ACTION
+
+/** The main scanner function which does all the work.
+ */
+YY_DECL
+{
+ yy_state_type yy_current_state;
+ char *yy_cp, *yy_bp;
+ int yy_act;
+
+ if ( !(yy_init) )
+ {
+ (yy_init) = 1;
+
+#ifdef YY_USER_INIT
+ YY_USER_INIT;
+#endif
+
+ if ( ! (yy_start) )
+ (yy_start) = 1; /* first start state */
+
+ if ( ! yyin )
+ yyin = stdin;
+
+ if ( ! yyout )
+ yyout = stdout;
+
+ if ( ! YY_CURRENT_BUFFER ) {
+ yyensure_buffer_stack ();
+ YY_CURRENT_BUFFER_LVALUE =
+ yy_create_buffer( yyin, YY_BUF_SIZE );
+ }
+
+ yy_load_buffer_state( );
+ }
+
+ {
+#line 112 "css.l"
+
+
+#line 2671 "css.c"
+
+ while ( /*CONSTCOND*/1 ) /* loops until end-of-file is reached */
+ {
+ yy_cp = (yy_c_buf_p);
+
+ /* Support of yytext. */
+ *yy_cp = (yy_hold_char);
+
+ /* yy_bp points to the position in yy_ch_buf of the start of
+ * the current run.
+ */
+ yy_bp = yy_cp;
+
+ yy_current_state = (yy_start);
+yy_match:
+ do
+ {
+ YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)] ;
+ if ( yy_accept[yy_current_state] )
+ {
+ (yy_last_accepting_state) = yy_current_state;
+ (yy_last_accepting_cpos) = yy_cp;
+ }
+ while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+ {
+ yy_current_state = (int) yy_def[yy_current_state];
+ if ( yy_current_state >= 1103 )
+ yy_c = yy_meta[yy_c];
+ }
+ yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
+ ++yy_cp;
+ }
+ while ( yy_current_state != 1102 );
+ yy_cp = (yy_last_accepting_cpos);
+ yy_current_state = (yy_last_accepting_state);
+
+yy_find_action:
+ yy_act = yy_accept[yy_current_state];
+
+ YY_DO_BEFORE_ACTION;
+
+do_action: /* This label is used only to access EOF actions. */
+
+ switch ( yy_act )
+ { /* beginning of action switch */
+ case 0: /* must back up */
+ /* undo the effects of YY_DO_BEFORE_ACTION */
+ *yy_cp = (yy_hold_char);
+ yy_cp = (yy_last_accepting_cpos);
+ yy_current_state = (yy_last_accepting_state);
+ goto yy_find_action;
+
+case 1:
+/* rule 1 can match eol */
+YY_RULE_SETUP
+#line 114 "css.l"
+{return S;}
+ YY_BREAK
+case 2:
+/* rule 2 can match eol */
+YY_RULE_SETUP
+#line 116 "css.l"
+{return COMMENT;}
+ YY_BREAK
+case 3:
+/* rule 3 can match eol */
+YY_RULE_SETUP
+#line 117 "css.l"
+/* ignore comments */
+ YY_BREAK
+case 4:
+/* rule 4 can match eol */
+YY_RULE_SETUP
+#line 118 "css.l"
+/* unclosed comment at EOF */
+ YY_BREAK
+case 5:
+YY_RULE_SETUP
+#line 120 "css.l"
+{return CDO;}
+ YY_BREAK
+case 6:
+YY_RULE_SETUP
+#line 121 "css.l"
+{return CDC;}
+ YY_BREAK
+case 7:
+YY_RULE_SETUP
+#line 122 "css.l"
+{return INCLUDES;}
+ YY_BREAK
+case 8:
+YY_RULE_SETUP
+#line 123 "css.l"
+{return DASHMATCH;}
+ YY_BREAK
+case 9:
+/* rule 9 can match eol */
+YY_RULE_SETUP
+#line 125 "css.l"
+{return STRING;}
+ YY_BREAK
+case 10:
+/* rule 10 can match eol */
+YY_RULE_SETUP
+#line 126 "css.l"
+{return BAD_STRING;}
+ YY_BREAK
+case 11:
+/* rule 11 can match eol */
+YY_RULE_SETUP
+#line 128 "css.l"
+{return IDENT;}
+ YY_BREAK
+case 12:
+/* rule 12 can match eol */
+YY_RULE_SETUP
+#line 130 "css.l"
+{return HASH;}
+ YY_BREAK
+case 13:
+/* rule 13 can match eol */
+YY_RULE_SETUP
+#line 132 "css.l"
+{return IMPORT_SYM;}
+ YY_BREAK
+case 14:
+/* rule 14 can match eol */
+YY_RULE_SETUP
+#line 133 "css.l"
+{return PAGE_SYM;}
+ YY_BREAK
+case 15:
+/* rule 15 can match eol */
+YY_RULE_SETUP
+#line 134 "css.l"
+{return MEDIA_SYM;}
+ YY_BREAK
+case 16:
+YY_RULE_SETUP
+#line 135 "css.l"
+{return CHARSET_SYM;}
+ YY_BREAK
+case 17:
+/* rule 17 can match eol */
+YY_RULE_SETUP
+#line 137 "css.l"
+{return IMPORTANT_SYM;}
+ YY_BREAK
+case 18:
+/* rule 18 can match eol */
+YY_RULE_SETUP
+#line 139 "css.l"
+{return EMS;}
+ YY_BREAK
+case 19:
+/* rule 19 can match eol */
+YY_RULE_SETUP
+#line 140 "css.l"
+{return EXS;}
+ YY_BREAK
+case 20:
+/* rule 20 can match eol */
+YY_RULE_SETUP
+#line 141 "css.l"
+{return LENGTH;}
+ YY_BREAK
+case 21:
+/* rule 21 can match eol */
+YY_RULE_SETUP
+#line 142 "css.l"
+{return LENGTH;}
+ YY_BREAK
+case 22:
+/* rule 22 can match eol */
+YY_RULE_SETUP
+#line 143 "css.l"
+{return LENGTH;}
+ YY_BREAK
+case 23:
+/* rule 23 can match eol */
+YY_RULE_SETUP
+#line 144 "css.l"
+{return LENGTH;}
+ YY_BREAK
+case 24:
+/* rule 24 can match eol */
+YY_RULE_SETUP
+#line 145 "css.l"
+{return LENGTH;}
+ YY_BREAK
+case 25:
+/* rule 25 can match eol */
+YY_RULE_SETUP
+#line 146 "css.l"
+{return LENGTH;}
+ YY_BREAK
+case 26:
+/* rule 26 can match eol */
+YY_RULE_SETUP
+#line 147 "css.l"
+{return ANGLE;}
+ YY_BREAK
+case 27:
+/* rule 27 can match eol */
+YY_RULE_SETUP
+#line 148 "css.l"
+{return ANGLE;}
+ YY_BREAK
+case 28:
+/* rule 28 can match eol */
+YY_RULE_SETUP
+#line 149 "css.l"
+{return ANGLE;}
+ YY_BREAK
+case 29:
+/* rule 29 can match eol */
+YY_RULE_SETUP
+#line 150 "css.l"
+{return TIME;}
+ YY_BREAK
+case 30:
+/* rule 30 can match eol */
+YY_RULE_SETUP
+#line 151 "css.l"
+{return TIME;}
+ YY_BREAK
+case 31:
+/* rule 31 can match eol */
+YY_RULE_SETUP
+#line 152 "css.l"
+{return FREQ;}
+ YY_BREAK
+case 32:
+/* rule 32 can match eol */
+YY_RULE_SETUP
+#line 153 "css.l"
+{return FREQ;}
+ YY_BREAK
+case 33:
+/* rule 33 can match eol */
+YY_RULE_SETUP
+#line 154 "css.l"
+{return DIMENSION;}
+ YY_BREAK
+case 34:
+YY_RULE_SETUP
+#line 156 "css.l"
+{return PERCENTAGE;}
+ YY_BREAK
+case 35:
+YY_RULE_SETUP
+#line 157 "css.l"
+{return NUMBER;}
+ YY_BREAK
+case 36:
+/* rule 36 can match eol */
+YY_RULE_SETUP
+#line 159 "css.l"
+{return URI;}
+ YY_BREAK
+case 37:
+/* rule 37 can match eol */
+YY_RULE_SETUP
+#line 160 "css.l"
+{return URI;}
+ YY_BREAK
+case 38:
+/* rule 38 can match eol */
+YY_RULE_SETUP
+#line 161 "css.l"
+{return BAD_URI;}
+ YY_BREAK
+case 39:
+/* rule 39 can match eol */
+YY_RULE_SETUP
+#line 163 "css.l"
+{return FUNCTION;}
+ YY_BREAK
+case 40:
+YY_RULE_SETUP
+#line 165 "css.l"
+{return *yytext;}
+ YY_BREAK
+case 41:
+YY_RULE_SETUP
+#line 167 "css.l"
+ECHO;
+ YY_BREAK
+#line 2961 "css.c"
+case YY_STATE_EOF(INITIAL):
+ yyterminate();
+
+ case YY_END_OF_BUFFER:
+ {
+ /* Amount of text matched not including the EOB char. */
+ int yy_amount_of_matched_text = (int) (yy_cp - (yytext_ptr)) - 1;
+
+ /* Undo the effects of YY_DO_BEFORE_ACTION. */
+ *yy_cp = (yy_hold_char);
+ YY_RESTORE_YY_MORE_OFFSET
+
+ if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_NEW )
+ {
+ /* We're scanning a new file or input source. It's
+ * possible that this happened because the user
+ * just pointed yyin at a new source and called
+ * yylex(). If so, then we have to assure
+ * consistency between YY_CURRENT_BUFFER and our
+ * globals. Here is the right place to do so, because
+ * this is the first action (other than possibly a
+ * back-up) that will match for the new input source.
+ */
+ (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
+ YY_CURRENT_BUFFER_LVALUE->yy_input_file = yyin;
+ YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = YY_BUFFER_NORMAL;
+ }
+
+ /* Note that here we test for yy_c_buf_p "<=" to the position
+ * of the first EOB in the buffer, since yy_c_buf_p will
+ * already have been incremented past the NUL character
+ * (since all states make transitions on EOB to the
+ * end-of-buffer state). Contrast this with the test
+ * in input().
+ */
+ if ( (yy_c_buf_p) <= &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] )
+ { /* This was really a NUL. */
+ yy_state_type yy_next_state;
+
+ (yy_c_buf_p) = (yytext_ptr) + yy_amount_of_matched_text;
+
+ yy_current_state = yy_get_previous_state( );
+
+ /* Okay, we're now positioned to make the NUL
+ * transition. We couldn't have
+ * yy_get_previous_state() go ahead and do it
+ * for us because it doesn't know how to deal
+ * with the possibility of jamming (and we don't
+ * want to build jamming into it because then it
+ * will run more slowly).
+ */
+
+ yy_next_state = yy_try_NUL_trans( yy_current_state );
+
+ yy_bp = (yytext_ptr) + YY_MORE_ADJ;
+
+ if ( yy_next_state )
+ {
+ /* Consume the NUL. */
+ yy_cp = ++(yy_c_buf_p);
+ yy_current_state = yy_next_state;
+ goto yy_match;
+ }
+
+ else
+ {
+ yy_cp = (yy_last_accepting_cpos);
+ yy_current_state = (yy_last_accepting_state);
+ goto yy_find_action;
+ }
+ }
+
+ else switch ( yy_get_next_buffer( ) )
+ {
+ case EOB_ACT_END_OF_FILE:
+ {
+ (yy_did_buffer_switch_on_eof) = 0;
+
+ if ( yywrap( ) )
+ {
+ /* Note: because we've taken care in
+ * yy_get_next_buffer() to have set up
+ * yytext, we can now set up
+ * yy_c_buf_p so that if some total
+ * hoser (like flex itself) wants to
+ * call the scanner after we return the
+ * YY_NULL, it'll still work - another
+ * YY_NULL will get returned.
+ */
+ (yy_c_buf_p) = (yytext_ptr) + YY_MORE_ADJ;
+
+ yy_act = YY_STATE_EOF(YY_START);
+ goto do_action;
+ }
+
+ else
+ {
+ if ( ! (yy_did_buffer_switch_on_eof) )
+ YY_NEW_FILE;
+ }
+ break;
+ }
+
+ case EOB_ACT_CONTINUE_SCAN:
+ (yy_c_buf_p) =
+ (yytext_ptr) + yy_amount_of_matched_text;
+
+ yy_current_state = yy_get_previous_state( );
+
+ yy_cp = (yy_c_buf_p);
+ yy_bp = (yytext_ptr) + YY_MORE_ADJ;
+ goto yy_match;
+
+ case EOB_ACT_LAST_MATCH:
+ (yy_c_buf_p) =
+ &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)];
+
+ yy_current_state = yy_get_previous_state( );
+
+ yy_cp = (yy_c_buf_p);
+ yy_bp = (yytext_ptr) + YY_MORE_ADJ;
+ goto yy_find_action;
+ }
+ break;
+ }
+
+ default:
+ YY_FATAL_ERROR(
+ "fatal flex scanner internal error--no action found" );
+ } /* end of action switch */
+ } /* end of scanning one token */
+ } /* end of user's declarations */
+} /* end of yylex */
+
+/* yy_get_next_buffer - try to read in a new buffer
+ *
+ * Returns a code representing an action:
+ * EOB_ACT_LAST_MATCH -
+ * EOB_ACT_CONTINUE_SCAN - continue scanning from current position
+ * EOB_ACT_END_OF_FILE - end of file
+ */
+static int yy_get_next_buffer (void)
+{
+ char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
+ char *source = (yytext_ptr);
+ int number_to_move, i;
+ int ret_val;
+
+ if ( (yy_c_buf_p) > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] )
+ YY_FATAL_ERROR(
+ "fatal flex scanner internal error--end of buffer missed" );
+
+ if ( YY_CURRENT_BUFFER_LVALUE->yy_fill_buffer == 0 )
+ { /* Don't try to fill the buffer, so this is an EOF. */
+ if ( (yy_c_buf_p) - (yytext_ptr) - YY_MORE_ADJ == 1 )
+ {
+ /* We matched a single character, the EOB, so
+ * treat this as a final EOF.
+ */
+ return EOB_ACT_END_OF_FILE;
+ }
+
+ else
+ {
+ /* We matched some text prior to the EOB, first
+ * process it.
+ */
+ return EOB_ACT_LAST_MATCH;
+ }
+ }
+
+ /* Try to read more data. */
+
+ /* First move last chars to start of buffer. */
+ number_to_move = (int) ((yy_c_buf_p) - (yytext_ptr) - 1);
+
+ for ( i = 0; i < number_to_move; ++i )
+ *(dest++) = *(source++);
+
+ if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_EOF_PENDING )
+ /* don't do the read, it's not guaranteed to return an EOF,
+ * just force an EOF
+ */
+ YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars) = 0;
+
+ else
+ {
+ int num_to_read =
+ YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1;
+
+ while ( num_to_read <= 0 )
+ { /* Not enough room in the buffer - grow it. */
+
+ /* just a shorter name for the current buffer */
+ YY_BUFFER_STATE b = YY_CURRENT_BUFFER_LVALUE;
+
+ int yy_c_buf_p_offset =
+ (int) ((yy_c_buf_p) - b->yy_ch_buf);
+
+ if ( b->yy_is_our_buffer )
+ {
+ int new_size = b->yy_buf_size * 2;
+
+ if ( new_size <= 0 )
+ b->yy_buf_size += b->yy_buf_size / 8;
+ else
+ b->yy_buf_size *= 2;
+
+ b->yy_ch_buf = (char *)
+ /* Include room in for 2 EOB chars. */
+ yyrealloc( (void *) b->yy_ch_buf,
+ (yy_size_t) (b->yy_buf_size + 2) );
+ }
+ else
+ /* Can't grow it, we don't own it. */
+ b->yy_ch_buf = NULL;
+
+ if ( ! b->yy_ch_buf )
+ YY_FATAL_ERROR(
+ "fatal error - scanner input buffer overflow" );
+
+ (yy_c_buf_p) = &b->yy_ch_buf[yy_c_buf_p_offset];
+
+ num_to_read = YY_CURRENT_BUFFER_LVALUE->yy_buf_size -
+ number_to_move - 1;
+
+ }
+
+ if ( num_to_read > YY_READ_BUF_SIZE )
+ num_to_read = YY_READ_BUF_SIZE;
+
+ /* Read in more data. */
+ YY_INPUT( (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]),
+ (yy_n_chars), num_to_read );
+
+ YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
+ }
+
+ if ( (yy_n_chars) == 0 )
+ {
+ if ( number_to_move == YY_MORE_ADJ )
+ {
+ ret_val = EOB_ACT_END_OF_FILE;
+ yyrestart( yyin );
+ }
+
+ else
+ {
+ ret_val = EOB_ACT_LAST_MATCH;
+ YY_CURRENT_BUFFER_LVALUE->yy_buffer_status =
+ YY_BUFFER_EOF_PENDING;
+ }
+ }
+
+ else
+ ret_val = EOB_ACT_CONTINUE_SCAN;
+
+ if (((yy_n_chars) + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
+ /* Extend the array by 50%, plus the number we really need. */
+ int new_size = (yy_n_chars) + number_to_move + ((yy_n_chars) >> 1);
+ YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc(
+ (void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf, (yy_size_t) new_size );
+ if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
+ YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" );
+ /* "- 2" to take care of EOB's */
+ YY_CURRENT_BUFFER_LVALUE->yy_buf_size = (int) (new_size - 2);
+ }
+
+ (yy_n_chars) += number_to_move;
+ YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] = YY_END_OF_BUFFER_CHAR;
+ YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] = YY_END_OF_BUFFER_CHAR;
+
+ (yytext_ptr) = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[0];
+
+ return ret_val;
+}
+
+/* yy_get_previous_state - get the state just before the EOB char was reached */
+
+ static yy_state_type yy_get_previous_state (void)
+{
+ yy_state_type yy_current_state;
+ char *yy_cp;
+
+ yy_current_state = (yy_start);
+
+ for ( yy_cp = (yytext_ptr) + YY_MORE_ADJ; yy_cp < (yy_c_buf_p); ++yy_cp )
+ {
+ YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1);
+ if ( yy_accept[yy_current_state] )
+ {
+ (yy_last_accepting_state) = yy_current_state;
+ (yy_last_accepting_cpos) = yy_cp;
+ }
+ while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+ {
+ yy_current_state = (int) yy_def[yy_current_state];
+ if ( yy_current_state >= 1103 )
+ yy_c = yy_meta[yy_c];
+ }
+ yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
+ }
+
+ return yy_current_state;
+}
+
+/* yy_try_NUL_trans - try to make a transition on the NUL character
+ *
+ * synopsis
+ * next_state = yy_try_NUL_trans( current_state );
+ */
+ static yy_state_type yy_try_NUL_trans (yy_state_type yy_current_state )
+{
+ int yy_is_jam;
+ char *yy_cp = (yy_c_buf_p);
+
+ YY_CHAR yy_c = 1;
+ if ( yy_accept[yy_current_state] )
+ {
+ (yy_last_accepting_state) = yy_current_state;
+ (yy_last_accepting_cpos) = yy_cp;
+ }
+ while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+ {
+ yy_current_state = (int) yy_def[yy_current_state];
+ if ( yy_current_state >= 1103 )
+ yy_c = yy_meta[yy_c];
+ }
+ yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
+ yy_is_jam = (yy_current_state == 1102);
+
+ return yy_is_jam ? 0 : yy_current_state;
+}
+
+#ifndef YY_NO_UNPUT
+
+#endif
+
+#ifndef YY_NO_INPUT
+#ifdef __cplusplus
+ static int yyinput (void)
+#else
+ static int input (void)
+#endif
+
+{
+ int c;
+
+ *(yy_c_buf_p) = (yy_hold_char);
+
+ if ( *(yy_c_buf_p) == YY_END_OF_BUFFER_CHAR )
+ {
+ /* yy_c_buf_p now points to the character we want to return.
+ * If this occurs *before* the EOB characters, then it's a
+ * valid NUL; if not, then we've hit the end of the buffer.
+ */
+ if ( (yy_c_buf_p) < &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] )
+ /* This was really a NUL. */
+ *(yy_c_buf_p) = '\0';
+
+ else
+ { /* need more input */
+ int offset = (int) ((yy_c_buf_p) - (yytext_ptr));
+ ++(yy_c_buf_p);
+
+ switch ( yy_get_next_buffer( ) )
+ {
+ case EOB_ACT_LAST_MATCH:
+ /* This happens because yy_g_n_b()
+ * sees that we've accumulated a
+ * token and flags that we need to
+ * try matching the token before
+ * proceeding. But for input(),
+ * there's no matching to consider.
+ * So convert the EOB_ACT_LAST_MATCH
+ * to EOB_ACT_END_OF_FILE.
+ */
+
+ /* Reset buffer status. */
+ yyrestart( yyin );
+
+ /*FALLTHROUGH*/
+
+ case EOB_ACT_END_OF_FILE:
+ {
+ if ( yywrap( ) )
+ return 0;
+
+ if ( ! (yy_did_buffer_switch_on_eof) )
+ YY_NEW_FILE;
+#ifdef __cplusplus
+ return yyinput();
+#else
+ return input();
+#endif
+ }
+
+ case EOB_ACT_CONTINUE_SCAN:
+ (yy_c_buf_p) = (yytext_ptr) + offset;
+ break;
+ }
+ }
+ }
+
+ c = *(unsigned char *) (yy_c_buf_p); /* cast for 8-bit char's */
+ *(yy_c_buf_p) = '\0'; /* preserve yytext */
+ (yy_hold_char) = *++(yy_c_buf_p);
+
+ return c;
+}
+#endif /* ifndef YY_NO_INPUT */
+
+/** Immediately switch to a different input stream.
+ * @param input_file A readable stream.
+ *
+ * @note This function does not reset the start condition to @c INITIAL .
+ */
+ void yyrestart (FILE * input_file )
+{
+
+ if ( ! YY_CURRENT_BUFFER ){
+ yyensure_buffer_stack ();
+ YY_CURRENT_BUFFER_LVALUE =
+ yy_create_buffer( yyin, YY_BUF_SIZE );
+ }
+
+ yy_init_buffer( YY_CURRENT_BUFFER, input_file );
+ yy_load_buffer_state( );
+}
+
+/** Switch to a different input buffer.
+ * @param new_buffer The new input buffer.
+ *
+ */
+ void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer )
+{
+
+ /* TODO. We should be able to replace this entire function body
+ * with
+ * yypop_buffer_state();
+ * yypush_buffer_state(new_buffer);
+ */
+ yyensure_buffer_stack ();
+ if ( YY_CURRENT_BUFFER == new_buffer )
+ return;
+
+ if ( YY_CURRENT_BUFFER )
+ {
+ /* Flush out information for old buffer. */
+ *(yy_c_buf_p) = (yy_hold_char);
+ YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p);
+ YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
+ }
+
+ YY_CURRENT_BUFFER_LVALUE = new_buffer;
+ yy_load_buffer_state( );
+
+ /* We don't actually know whether we did this switch during
+ * EOF (yywrap()) processing, but the only time this flag
+ * is looked at is after yywrap() is called, so it's safe
+ * to go ahead and always set it.
+ */
+ (yy_did_buffer_switch_on_eof) = 1;
+}
+
+static void yy_load_buffer_state (void)
+{
+ (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
+ (yytext_ptr) = (yy_c_buf_p) = YY_CURRENT_BUFFER_LVALUE->yy_buf_pos;
+ yyin = YY_CURRENT_BUFFER_LVALUE->yy_input_file;
+ (yy_hold_char) = *(yy_c_buf_p);
+}
+
+/** Allocate and initialize an input buffer state.
+ * @param file A readable stream.
+ * @param size The character buffer size in bytes. When in doubt, use @c YY_BUF_SIZE.
+ *
+ * @return the allocated buffer state.
+ */
+ YY_BUFFER_STATE yy_create_buffer (FILE * file, int size )
+{
+ YY_BUFFER_STATE b;
+
+ b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) );
+ if ( ! b )
+ YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
+
+ b->yy_buf_size = size;
+
+ /* yy_ch_buf has to be 2 characters longer than the size given because
+ * we need to put in 2 end-of-buffer characters.
+ */
+ b->yy_ch_buf = (char *) yyalloc( (yy_size_t) (b->yy_buf_size + 2) );
+ if ( ! b->yy_ch_buf )
+ YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
+
+ b->yy_is_our_buffer = 1;
+
+ yy_init_buffer( b, file );
+
+ return b;
+}
+
+/** Destroy the buffer.
+ * @param b a buffer created with yy_create_buffer()
+ *
+ */
+ void yy_delete_buffer (YY_BUFFER_STATE b )
+{
+
+ if ( ! b )
+ return;
+
+ if ( b == YY_CURRENT_BUFFER ) /* Not sure if we should pop here. */
+ YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0;
+
+ if ( b->yy_is_our_buffer )
+ yyfree( (void *) b->yy_ch_buf );
+
+ yyfree( (void *) b );
+}
+
+/* Initializes or reinitializes a buffer.
+ * This function is sometimes called more than once on the same buffer,
+ * such as during a yyrestart() or at EOF.
+ */
+ static void yy_init_buffer (YY_BUFFER_STATE b, FILE * file )
+
+{
+ int oerrno = errno;
+
+ yy_flush_buffer( b );
+
+ b->yy_input_file = file;
+ b->yy_fill_buffer = 1;
+
+ /* If b is the current buffer, then yy_init_buffer was _probably_
+ * called from yyrestart() or through yy_get_next_buffer.
+ * In that case, we don't want to reset the lineno or column.
+ */
+ if (b != YY_CURRENT_BUFFER){
+ b->yy_bs_lineno = 1;
+ b->yy_bs_column = 0;
+ }
+
+ b->yy_is_interactive = 0;
+
+ errno = oerrno;
+}
+
+/** Discard all buffered characters. On the next scan, YY_INPUT will be called.
+ * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER.
+ *
+ */
+ void yy_flush_buffer (YY_BUFFER_STATE b )
+{
+ if ( ! b )
+ return;
+
+ b->yy_n_chars = 0;
+
+ /* We always need two end-of-buffer characters. The first causes
+ * a transition to the end-of-buffer state. The second causes
+ * a jam in that state.
+ */
+ b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR;
+ b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR;
+
+ b->yy_buf_pos = &b->yy_ch_buf[0];
+
+ b->yy_at_bol = 1;
+ b->yy_buffer_status = YY_BUFFER_NEW;
+
+ if ( b == YY_CURRENT_BUFFER )
+ yy_load_buffer_state( );
+}
+
+/** Pushes the new state onto the stack. The new state becomes
+ * the current state. This function will allocate the stack
+ * if necessary.
+ * @param new_buffer The new state.
+ *
+ */
+void yypush_buffer_state (YY_BUFFER_STATE new_buffer )
+{
+ if (new_buffer == NULL)
+ return;
+
+ yyensure_buffer_stack();
+
+ /* This block is copied from yy_switch_to_buffer. */
+ if ( YY_CURRENT_BUFFER )
+ {
+ /* Flush out information for old buffer. */
+ *(yy_c_buf_p) = (yy_hold_char);
+ YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p);
+ YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
+ }
+
+ /* Only push if top exists. Otherwise, replace top. */
+ if (YY_CURRENT_BUFFER)
+ (yy_buffer_stack_top)++;
+ YY_CURRENT_BUFFER_LVALUE = new_buffer;
+
+ /* copied from yy_switch_to_buffer. */
+ yy_load_buffer_state( );
+ (yy_did_buffer_switch_on_eof) = 1;
+}
+
+/** Removes and deletes the top of the stack, if present.
+ * The next element becomes the new top.
+ *
+ */
+void yypop_buffer_state (void)
+{
+ if (!YY_CURRENT_BUFFER)
+ return;
+
+ yy_delete_buffer(YY_CURRENT_BUFFER );
+ YY_CURRENT_BUFFER_LVALUE = NULL;
+ if ((yy_buffer_stack_top) > 0)
+ --(yy_buffer_stack_top);
+
+ if (YY_CURRENT_BUFFER) {
+ yy_load_buffer_state( );
+ (yy_did_buffer_switch_on_eof) = 1;
+ }
+}
+
+/* Allocates the stack if it does not exist.
+ * Guarantees space for at least one push.
+ */
+static void yyensure_buffer_stack (void)
+{
+ yy_size_t num_to_alloc;
+
+ if (!(yy_buffer_stack)) {
+
+ /* First allocation is just for 2 elements, since we don't know if this
+ * scanner will even need a stack. We use 2 instead of 1 to avoid an
+ * immediate realloc on the next call.
+ */
+ num_to_alloc = 1; /* After all that talk, this was set to 1 anyways... */
+ (yy_buffer_stack) = (struct yy_buffer_state**)yyalloc
+ (num_to_alloc * sizeof(struct yy_buffer_state*)
+ );
+ if ( ! (yy_buffer_stack) )
+ YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
+
+ memset((yy_buffer_stack), 0, num_to_alloc * sizeof(struct yy_buffer_state*));
+
+ (yy_buffer_stack_max) = num_to_alloc;
+ (yy_buffer_stack_top) = 0;
+ return;
+ }
+
+ if ((yy_buffer_stack_top) >= ((yy_buffer_stack_max)) - 1){
+
+ /* Increase the buffer to prepare for a possible push. */
+ yy_size_t grow_size = 8 /* arbitrary grow size */;
+
+ num_to_alloc = (yy_buffer_stack_max) + grow_size;
+ (yy_buffer_stack) = (struct yy_buffer_state**)yyrealloc
+ ((yy_buffer_stack),
+ num_to_alloc * sizeof(struct yy_buffer_state*)
+ );
+ if ( ! (yy_buffer_stack) )
+ YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
+
+ /* zero only the new slots.*/
+ memset((yy_buffer_stack) + (yy_buffer_stack_max), 0, grow_size * sizeof(struct yy_buffer_state*));
+ (yy_buffer_stack_max) = num_to_alloc;
+ }
+}
+
+/** Setup the input buffer state to scan directly from a user-specified character buffer.
+ * @param base the character buffer
+ * @param size the size in bytes of the character buffer
+ *
+ * @return the newly allocated buffer state object.
+ */
+YY_BUFFER_STATE yy_scan_buffer (char * base, yy_size_t size )
+{
+ YY_BUFFER_STATE b;
+
+ if ( size < 2 ||
+ base[size-2] != YY_END_OF_BUFFER_CHAR ||
+ base[size-1] != YY_END_OF_BUFFER_CHAR )
+ /* They forgot to leave room for the EOB's. */
+ return NULL;
+
+ b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) );
+ if ( ! b )
+ YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" );
+
+ b->yy_buf_size = (int) (size - 2); /* "- 2" to take care of EOB's */
+ b->yy_buf_pos = b->yy_ch_buf = base;
+ b->yy_is_our_buffer = 0;
+ b->yy_input_file = NULL;
+ b->yy_n_chars = b->yy_buf_size;
+ b->yy_is_interactive = 0;
+ b->yy_at_bol = 1;
+ b->yy_fill_buffer = 0;
+ b->yy_buffer_status = YY_BUFFER_NEW;
+
+ yy_switch_to_buffer( b );
+
+ return b;
+}
+
+/** Setup the input buffer state to scan a string. The next call to yylex() will
+ * scan from a @e copy of @a str.
+ * @param yystr a NUL-terminated string to scan
+ *
+ * @return the newly allocated buffer state object.
+ * @note If you want to scan bytes that may contain NUL values, then use
+ * yy_scan_bytes() instead.
+ */
+YY_BUFFER_STATE yy_scan_string (const char * yystr )
+{
+
+ return yy_scan_bytes( yystr, (int) strlen(yystr) );
+}
+
+/** Setup the input buffer state to scan the given bytes. The next call to yylex() will
+ * scan from a @e copy of @a bytes.
+ * @param yybytes the byte buffer to scan
+ * @param _yybytes_len the number of bytes in the buffer pointed to by @a bytes.
+ *
+ * @return the newly allocated buffer state object.
+ */
+YY_BUFFER_STATE yy_scan_bytes (const char * yybytes, int _yybytes_len )
+{
+ YY_BUFFER_STATE b;
+ char *buf;
+ yy_size_t n;
+ int i;
+
+ /* Get memory for full buffer, including space for trailing EOB's. */
+ n = (yy_size_t) (_yybytes_len + 2);
+ buf = (char *) yyalloc( n );
+ if ( ! buf )
+ YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" );
+
+ for ( i = 0; i < _yybytes_len; ++i )
+ buf[i] = yybytes[i];
+
+ buf[_yybytes_len] = buf[_yybytes_len+1] = YY_END_OF_BUFFER_CHAR;
+
+ b = yy_scan_buffer( buf, n );
+ if ( ! b )
+ YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" );
+
+ /* It's okay to grow etc. this buffer, and we should throw it
+ * away when we're done.
+ */
+ b->yy_is_our_buffer = 1;
+
+ return b;
+}
+
+#ifndef YY_EXIT_FAILURE
+#define YY_EXIT_FAILURE 2
+#endif
+
+static void yynoreturn yy_fatal_error (const char* msg )
+{
+ fprintf( stderr, "%s\n", msg );
+ exit( YY_EXIT_FAILURE );
+}
+
+/* Redefine yyless() so it works in section 3 code. */
+
+#undef yyless
+#define yyless(n) \
+ do \
+ { \
+ /* Undo effects of setting up yytext. */ \
+ int yyless_macro_arg = (n); \
+ YY_LESS_LINENO(yyless_macro_arg);\
+ yytext[yyleng] = (yy_hold_char); \
+ (yy_c_buf_p) = yytext + yyless_macro_arg; \
+ (yy_hold_char) = *(yy_c_buf_p); \
+ *(yy_c_buf_p) = '\0'; \
+ yyleng = yyless_macro_arg; \
+ } \
+ while ( 0 )
+
+/* Accessor methods (get/set functions) to struct members. */
+
+/** Get the current line number.
+ *
+ */
+int yyget_lineno (void)
+{
+
+ return yylineno;
+}
+
+/** Get the input stream.
+ *
+ */
+FILE *yyget_in (void)
+{
+ return yyin;
+}
+
+/** Get the output stream.
+ *
+ */
+FILE *yyget_out (void)
+{
+ return yyout;
+}
+
+/** Get the length of the current token.
+ *
+ */
+int yyget_leng (void)
+{
+ return yyleng;
+}
+
+/** Get the current token.
+ *
+ */
+
+char *yyget_text (void)
+{
+ return yytext;
+}
+
+/** Set the current line number.
+ * @param _line_number line number
+ *
+ */
+void yyset_lineno (int _line_number )
+{
+
+ yylineno = _line_number;
+}
+
+/** Set the input stream. This does not discard the current
+ * input buffer.
+ * @param _in_str A readable stream.
+ *
+ * @see yy_switch_to_buffer
+ */
+void yyset_in (FILE * _in_str )
+{
+ yyin = _in_str ;
+}
+
+void yyset_out (FILE * _out_str )
+{
+ yyout = _out_str ;
+}
+
+int yyget_debug (void)
+{
+ return yy_flex_debug;
+}
+
+void yyset_debug (int _bdebug )
+{
+ yy_flex_debug = _bdebug ;
+}
+
+static int yy_init_globals (void)
+{
+ /* Initialization is the same as for the non-reentrant scanner.
+ * This function is called from yylex_destroy(), so don't allocate here.
+ */
+
+ (yy_buffer_stack) = NULL;
+ (yy_buffer_stack_top) = 0;
+ (yy_buffer_stack_max) = 0;
+ (yy_c_buf_p) = NULL;
+ (yy_init) = 0;
+ (yy_start) = 0;
+
+/* Defined in main.c */
+#ifdef YY_STDINIT
+ yyin = stdin;
+ yyout = stdout;
+#else
+ yyin = NULL;
+ yyout = NULL;
+#endif
+
+ /* For future reference: Set errno on error, since we are called by
+ * yylex_init()
+ */
+ return 0;
+}
+
+/* yylex_destroy is for both reentrant and non-reentrant scanners. */
+int yylex_destroy (void)
+{
+
+ /* Pop the buffer stack, destroying each element. */
+ while(YY_CURRENT_BUFFER){
+ yy_delete_buffer( YY_CURRENT_BUFFER );
+ YY_CURRENT_BUFFER_LVALUE = NULL;
+ yypop_buffer_state();
+ }
+
+ /* Destroy the stack itself. */
+ yyfree((yy_buffer_stack) );
+ (yy_buffer_stack) = NULL;
+
+ /* Reset the globals. This is important in a non-reentrant scanner so the next time
+ * yylex() is called, initialization will occur. */
+ yy_init_globals( );
+
+ return 0;
+}
+
+/*
+ * Internal utility routines.
+ */
+
+#ifndef yytext_ptr
+static void yy_flex_strncpy (char* s1, const char * s2, int n )
+{
+
+ int i;
+ for ( i = 0; i < n; ++i )
+ s1[i] = s2[i];
+}
+#endif
+
+#ifdef YY_NEED_STRLEN
+static int yy_flex_strlen (const char * s )
+{
+ int n;
+ for ( n = 0; s[n]; ++n )
+ ;
+
+ return n;
+}
+#endif
+
+void *yyalloc (yy_size_t size )
+{
+ return malloc(size);
+}
+
+void *yyrealloc (void * ptr, yy_size_t size )
+{
+
+ /* The cast to (char *) in the following accommodates both
+ * implementations that use char* generic pointers, and those
+ * that use void* generic pointers. It works with the latter
+ * because both ANSI C and C++ allow castless assignment from
+ * any pointer type to void*, and deal with argument conversions
+ * as though doing an assignment.
+ */
+ return realloc(ptr, size);
+}
+
+void yyfree (void * ptr )
+{
+ free( (char *) ptr ); /* see yyrealloc() for (char *) cast */
+}
+
+#define YYTABLES_NAME "yytables"
+
+#line 167 "css.l"
+
+
diff --git a/src/css.l b/src/css.l
new file mode 100644
index 0000000..bae065d
--- /dev/null
+++ b/src/css.l
@@ -0,0 +1,167 @@
+%option case-insensitive
+%option noyywrap
+%option never-interactive
+%option nounput
+
+%top{
+/* config.h must precede flex's inclusion of <stdio.h>
+ in order for its _GNU_SOURCE definition to take effect. */
+#include <config.h>
+}
+
+%{
+/* Lex source for CSS tokenizing.
+ Taken from http://www.w3.org/TR/CSS21/grammar.html#q2
+ Copyright (C) 2006, 2009-2011, 2015, 2018-2020 Free Software
+ Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at
+your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#define YY_NO_INPUT
+
+#include "css-tokens.h"
+
+#if defined __clang__ || __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
+ #pragma GCC diagnostic ignored "-Wunknown-pragmas" // clang mourns about the next one
+ #pragma GCC diagnostic ignored "-Wunused-function"
+ #pragma GCC diagnostic ignored "-Wunused-macros"
+ #pragma GCC diagnostic ignored "-Wunused-parameter"
+ #pragma GCC diagnostic ignored "-Wsign-compare"
+ #pragma GCC diagnostic ignored "-Wswitch-default"
+ #pragma GCC diagnostic ignored "-Wunreachable-code" // clang
+ #pragma clang diagnostic ignored "-Wshorten-64-to-32"
+ #ifndef __clang__
+ #pragma GCC diagnostic ignored "-Wsuggest-attribute=pure"
+ #endif
+#endif
+
+%}
+
+h [0-9a-f]
+nonascii [\240-\377]
+unicode \\{h}{1,6}(\r\n|[ \t\r\n\f])?
+escape {unicode}|\\[^\r\n\f0-9a-f]
+nmstart [_a-z]|{nonascii}|{escape}
+nmchar [_a-z0-9-]|{nonascii}|{escape}
+string1 \"([^\n\r\f\\"]|\\{nl}|{escape})*\"
+string2 \'([^\n\r\f\\']|\\{nl}|{escape})*\'
+badstring1 \"([^\n\r\f\\"]|\\{nl}|{escape})*\\?
+badstring2 \'([^\n\r\f\\']|\\{nl}|{escape})*\\?
+badcomment1 \/\*[^*]*\*+([^/*][^*]*\*+)*
+badcomment2 \/\*[^*]*(\*+[^/*][^*]*)*
+baduri1 url\({w}([!#$%&*-\[\]-~]|{nonascii}|{escape})*{w}
+baduri2 url\({w}{string}{w}
+baduri3 url\({w}{badstring}
+comment \/\*[^*]*\*+([^/*][^*]*\*+)*\/
+ident -?{nmstart}{nmchar}*
+name {nmchar}+
+num [0-9]+|[0-9]*"."[0-9]+
+string {string1}|{string2}
+badstring {badstring1}|{badstring2}
+badcomment {badcomment1}|{badcomment2}
+baduri {baduri1}|{baduri2}|{baduri3}
+url ([!#$%&*-~]|{nonascii}|{escape})*
+s [ \t\r\n\f]+
+w {s}?
+nl \n|\r\n|\r|\f
+
+A a|\\0{0,4}(41|61)(\r\n|[ \t\r\n\f])?
+C c|\\0{0,4}(43|63)(\r\n|[ \t\r\n\f])?
+D d|\\0{0,4}(44|64)(\r\n|[ \t\r\n\f])?
+E e|\\0{0,4}(45|65)(\r\n|[ \t\r\n\f])?
+G g|\\0{0,4}(47|67)(\r\n|[ \t\r\n\f])?|\\g
+H h|\\0{0,4}(48|68)(\r\n|[ \t\r\n\f])?|\\h
+I i|\\0{0,4}(49|69)(\r\n|[ \t\r\n\f])?|\\i
+K k|\\0{0,4}(4b|6b)(\r\n|[ \t\r\n\f])?|\\k
+L l|\\0{0,4}(4c|6c)(\r\n|[ \t\r\n\f])?|\\l
+M m|\\0{0,4}(4d|6d)(\r\n|[ \t\r\n\f])?|\\m
+N n|\\0{0,4}(4e|6e)(\r\n|[ \t\r\n\f])?|\\n
+O o|\\0{0,4}(4f|6f)(\r\n|[ \t\r\n\f])?|\\o
+P p|\\0{0,4}(50|70)(\r\n|[ \t\r\n\f])?|\\p
+R r|\\0{0,4}(52|72)(\r\n|[ \t\r\n\f])?|\\r
+S s|\\0{0,4}(53|73)(\r\n|[ \t\r\n\f])?|\\s
+T t|\\0{0,4}(54|74)(\r\n|[ \t\r\n\f])?|\\t
+U u|\\0{0,4}(55|75)(\r\n|[ \t\r\n\f])?|\\u
+X x|\\0{0,4}(58|78)(\r\n|[ \t\r\n\f])?|\\x
+Z z|\\0{0,4}(5a|7a)(\r\n|[ \t\r\n\f])?|\\z
+
+%%
+
+{s} {return S;}
+
+{comment} {return COMMENT;}
+#\/\*[^*]*\*+([^/*][^*]*\*+)*\/ /* ignore comments */
+{badcomment} /* unclosed comment at EOF */
+
+"<!--" {return CDO;}
+"-->" {return CDC;}
+"~=" {return INCLUDES;}
+"|=" {return DASHMATCH;}
+
+{string} {return STRING;}
+{badstring} {return BAD_STRING;}
+
+{ident} {return IDENT;}
+
+"#"{name} {return HASH;}
+
+@{I}{M}{P}{O}{R}{T} {return IMPORT_SYM;}
+@{P}{A}{G}{E} {return PAGE_SYM;}
+@{M}{E}{D}{I}{A} {return MEDIA_SYM;}
+"@charset " {return CHARSET_SYM;}
+
+"!"({w}|{comment})*{I}{M}{P}{O}{R}{T}{A}{N}{T} {return IMPORTANT_SYM;}
+
+{num}{E}{M} {return EMS;}
+{num}{E}{X} {return EXS;}
+{num}{P}{X} {return LENGTH;}
+{num}{C}{M} {return LENGTH;}
+{num}{M}{M} {return LENGTH;}
+{num}{I}{N} {return LENGTH;}
+{num}{P}{T} {return LENGTH;}
+{num}{P}{C} {return LENGTH;}
+{num}{D}{E}{G} {return ANGLE;}
+{num}{R}{A}{D} {return ANGLE;}
+{num}{G}{R}{A}{D} {return ANGLE;}
+{num}{M}{S} {return TIME;}
+{num}{S} {return TIME;}
+{num}{H}{Z} {return FREQ;}
+{num}{K}{H}{Z} {return FREQ;}
+{num}{ident} {return DIMENSION;}
+
+{num}% {return PERCENTAGE;}
+{num} {return NUMBER;}
+
+"url("{w}{string}{w}")" {return URI;}
+"url("{w}{url}{w}")" {return URI;}
+{baduri} {return BAD_URI;}
+
+{ident}"(" {return FUNCTION;}
+
+. {return *yytext;}
+
+%%
diff --git a/src/css_.c b/src/css_.c
new file mode 100644
index 0000000..76e4bb9
--- /dev/null
+++ b/src/css_.c
@@ -0,0 +1,3933 @@
+#include "wget.h"
+#line 1 "css.c"
+/* config.h must precede flex's inclusion of <stdio.h>
+ in order for its _GNU_SOURCE definition to take effect. */
+#include <config.h>
+
+#line 6 "css.c"
+
+#define YY_INT_ALIGNED short int
+
+/* A lexical scanner generated by flex */
+
+#define FLEX_SCANNER
+#define YY_FLEX_MAJOR_VERSION 2
+#define YY_FLEX_MINOR_VERSION 6
+#define YY_FLEX_SUBMINOR_VERSION 4
+#if YY_FLEX_SUBMINOR_VERSION > 0
+#define FLEX_BETA
+#endif
+
+/* First, we deal with platform-specific or compiler-specific issues. */
+
+/* begin standard C headers. */
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+
+/* end standard C headers. */
+
+/* flex integer type definitions */
+
+#ifndef FLEXINT_H
+#define FLEXINT_H
+
+/* C99 systems have <inttypes.h>. Non-C99 systems may or may not. */
+
+#if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
+
+/* C99 says to define __STDC_LIMIT_MACROS before including stdint.h,
+ * if you want the limit (max/min) macros for int types.
+ */
+#ifndef __STDC_LIMIT_MACROS
+#define __STDC_LIMIT_MACROS 1
+#endif
+
+#include <inttypes.h>
+typedef int8_t flex_int8_t;
+typedef uint8_t flex_uint8_t;
+typedef int16_t flex_int16_t;
+typedef uint16_t flex_uint16_t;
+typedef int32_t flex_int32_t;
+typedef uint32_t flex_uint32_t;
+#else
+typedef signed char flex_int8_t;
+typedef short int flex_int16_t;
+typedef int flex_int32_t;
+typedef unsigned char flex_uint8_t;
+typedef unsigned short int flex_uint16_t;
+typedef unsigned int flex_uint32_t;
+
+/* Limits of integral types. */
+#ifndef INT8_MIN
+#define INT8_MIN (-128)
+#endif
+#ifndef INT16_MIN
+#define INT16_MIN (-32767-1)
+#endif
+#ifndef INT32_MIN
+#define INT32_MIN (-2147483647-1)
+#endif
+#ifndef INT8_MAX
+#define INT8_MAX (127)
+#endif
+#ifndef INT16_MAX
+#define INT16_MAX (32767)
+#endif
+#ifndef INT32_MAX
+#define INT32_MAX (2147483647)
+#endif
+#ifndef UINT8_MAX
+#define UINT8_MAX (255U)
+#endif
+#ifndef UINT16_MAX
+#define UINT16_MAX (65535U)
+#endif
+#ifndef UINT32_MAX
+#define UINT32_MAX (4294967295U)
+#endif
+
+#ifndef SIZE_MAX
+#define SIZE_MAX (~(size_t)0)
+#endif
+
+#endif /* ! C99 */
+
+#endif /* ! FLEXINT_H */
+
+/* begin standard C++ headers. */
+
+/* TODO: this is always defined, so inline it */
+#define yyconst const
+
+#if defined(__GNUC__) && __GNUC__ >= 3
+#define yynoreturn __attribute__((__noreturn__))
+#else
+#define yynoreturn
+#endif
+
+/* Returned upon end-of-file. */
+#define YY_NULL 0
+
+/* Promotes a possibly negative, possibly signed char to an
+ * integer in range [0..255] for use as an array index.
+ */
+#define YY_SC_TO_UI(c) ((YY_CHAR) (c))
+
+/* Enter a start condition. This macro really ought to take a parameter,
+ * but we do it the disgusting crufty way forced on us by the ()-less
+ * definition of BEGIN.
+ */
+#define BEGIN (yy_start) = 1 + 2 *
+/* Translate the current start state into a value that can be later handed
+ * to BEGIN to return to the state. The YYSTATE alias is for lex
+ * compatibility.
+ */
+#define YY_START (((yy_start) - 1) / 2)
+#define YYSTATE YY_START
+/* Action number for EOF rule of a given start state. */
+#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
+/* Special action meaning "start processing a new file". */
+#define YY_NEW_FILE yyrestart( yyin )
+#define YY_END_OF_BUFFER_CHAR 0
+
+/* Size of default input buffer. */
+#ifndef YY_BUF_SIZE
+#ifdef __ia64__
+/* On IA-64, the buffer size is 16k, not 8k.
+ * Moreover, YY_BUF_SIZE is 2*YY_READ_BUF_SIZE in the general case.
+ * Ditto for the __ia64__ case accordingly.
+ */
+#define YY_BUF_SIZE 32768
+#else
+#define YY_BUF_SIZE 16384
+#endif /* __ia64__ */
+#endif
+
+/* The state buf must be large enough to hold one state per character in the main buffer.
+ */
+#define YY_STATE_BUF_SIZE ((YY_BUF_SIZE + 2) * sizeof(yy_state_type))
+
+#ifndef YY_TYPEDEF_YY_BUFFER_STATE
+#define YY_TYPEDEF_YY_BUFFER_STATE
+typedef struct yy_buffer_state *YY_BUFFER_STATE;
+#endif
+
+#ifndef YY_TYPEDEF_YY_SIZE_T
+#define YY_TYPEDEF_YY_SIZE_T
+typedef size_t yy_size_t;
+#endif
+
+extern int yyleng;
+
+extern FILE *yyin, *yyout;
+
+#define EOB_ACT_CONTINUE_SCAN 0
+#define EOB_ACT_END_OF_FILE 1
+#define EOB_ACT_LAST_MATCH 2
+
+ #define YY_LESS_LINENO(n)
+ #define YY_LINENO_REWIND_TO(ptr)
+
+/* Return all but the first "n" matched characters back to the input stream. */
+#define yyless(n) \
+ do \
+ { \
+ /* Undo effects of setting up yytext. */ \
+ int yyless_macro_arg = (n); \
+ YY_LESS_LINENO(yyless_macro_arg);\
+ *yy_cp = (yy_hold_char); \
+ YY_RESTORE_YY_MORE_OFFSET \
+ (yy_c_buf_p) = yy_cp = yy_bp + yyless_macro_arg - YY_MORE_ADJ; \
+ YY_DO_BEFORE_ACTION; /* set up yytext again */ \
+ } \
+ while ( 0 )
+#define unput(c) yyunput( c, (yytext_ptr) )
+
+#ifndef YY_STRUCT_YY_BUFFER_STATE
+#define YY_STRUCT_YY_BUFFER_STATE
+struct yy_buffer_state
+ {
+ FILE *yy_input_file;
+
+ char *yy_ch_buf; /* input buffer */
+ char *yy_buf_pos; /* current position in input buffer */
+
+ /* Size of input buffer in bytes, not including room for EOB
+ * characters.
+ */
+ int yy_buf_size;
+
+ /* Number of characters read into yy_ch_buf, not including EOB
+ * characters.
+ */
+ int yy_n_chars;
+
+ /* Whether we "own" the buffer - i.e., we know we created it,
+ * and can realloc() it to grow it, and should free() it to
+ * delete it.
+ */
+ int yy_is_our_buffer;
+
+ /* Whether this is an "interactive" input source; if so, and
+ * if we're using stdio for input, then we want to use getc()
+ * instead of fread(), to make sure we stop fetching input after
+ * each newline.
+ */
+ int yy_is_interactive;
+
+ /* Whether we're considered to be at the beginning of a line.
+ * If so, '^' rules will be active on the next match, otherwise
+ * not.
+ */
+ int yy_at_bol;
+
+ int yy_bs_lineno; /**< The line count. */
+ int yy_bs_column; /**< The column count. */
+
+ /* Whether to try to fill the input buffer when we reach the
+ * end of it.
+ */
+ int yy_fill_buffer;
+
+ int yy_buffer_status;
+
+#define YY_BUFFER_NEW 0
+#define YY_BUFFER_NORMAL 1
+ /* When an EOF's been seen but there's still some text to process
+ * then we mark the buffer as YY_EOF_PENDING, to indicate that we
+ * shouldn't try reading from the input source any more. We might
+ * still have a bunch of tokens to match, though, because of
+ * possible backing-up.
+ *
+ * When we actually see the EOF, we change the status to "new"
+ * (via yyrestart()), so that the user can continue scanning by
+ * just pointing yyin at a new input file.
+ */
+#define YY_BUFFER_EOF_PENDING 2
+
+ };
+#endif /* !YY_STRUCT_YY_BUFFER_STATE */
+
+/* Stack of input buffers. */
+static size_t yy_buffer_stack_top = 0; /**< index of top of stack. */
+static size_t yy_buffer_stack_max = 0; /**< capacity of stack. */
+static YY_BUFFER_STATE * yy_buffer_stack = NULL; /**< Stack as an array. */
+
+/* We provide macros for accessing buffer states in case in the
+ * future we want to put the buffer states in a more general
+ * "scanner state".
+ *
+ * Returns the top of the stack, or NULL.
+ */
+#define YY_CURRENT_BUFFER ( (yy_buffer_stack) \
+ ? (yy_buffer_stack)[(yy_buffer_stack_top)] \
+ : NULL)
+/* Same as previous macro, but useful when we know that the buffer stack is not
+ * NULL or when we need an lvalue. For internal use only.
+ */
+#define YY_CURRENT_BUFFER_LVALUE (yy_buffer_stack)[(yy_buffer_stack_top)]
+
+/* yy_hold_char holds the character lost when yytext is formed. */
+static char yy_hold_char;
+static int yy_n_chars; /* number of characters read into yy_ch_buf */
+int yyleng;
+
+/* Points to current character in buffer. */
+static char *yy_c_buf_p = NULL;
+static int yy_init = 0; /* whether we need to initialize */
+static int yy_start = 0; /* start state number */
+
+/* Flag which is used to allow yywrap()'s to do buffer switches
+ * instead of setting up a fresh yyin. A bit of a hack ...
+ */
+static int yy_did_buffer_switch_on_eof;
+
+void yyrestart ( FILE *input_file );
+void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer );
+YY_BUFFER_STATE yy_create_buffer ( FILE *file, int size );
+void yy_delete_buffer ( YY_BUFFER_STATE b );
+void yy_flush_buffer ( YY_BUFFER_STATE b );
+void yypush_buffer_state ( YY_BUFFER_STATE new_buffer );
+void yypop_buffer_state ( void );
+
+static void yyensure_buffer_stack ( void );
+static void yy_load_buffer_state ( void );
+static void yy_init_buffer ( YY_BUFFER_STATE b, FILE *file );
+#define YY_FLUSH_BUFFER yy_flush_buffer( YY_CURRENT_BUFFER )
+
+YY_BUFFER_STATE yy_scan_buffer ( char *base, yy_size_t size );
+YY_BUFFER_STATE yy_scan_string ( const char *yy_str );
+YY_BUFFER_STATE yy_scan_bytes ( const char *bytes, int len );
+
+void *yyalloc ( yy_size_t );
+void *yyrealloc ( void *, yy_size_t );
+void yyfree ( void * );
+
+#define yy_new_buffer yy_create_buffer
+#define yy_set_interactive(is_interactive) \
+ { \
+ if ( ! YY_CURRENT_BUFFER ){ \
+ yyensure_buffer_stack (); \
+ YY_CURRENT_BUFFER_LVALUE = \
+ yy_create_buffer( yyin, YY_BUF_SIZE ); \
+ } \
+ YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \
+ }
+#define yy_set_bol(at_bol) \
+ { \
+ if ( ! YY_CURRENT_BUFFER ){\
+ yyensure_buffer_stack (); \
+ YY_CURRENT_BUFFER_LVALUE = \
+ yy_create_buffer( yyin, YY_BUF_SIZE ); \
+ } \
+ YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \
+ }
+#define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)
+
+/* Begin user sect3 */
+
+#define yywrap() (/*CONSTCOND*/1)
+#define YY_SKIP_YYWRAP
+typedef flex_uint8_t YY_CHAR;
+
+FILE *yyin = NULL, *yyout = NULL;
+
+typedef int yy_state_type;
+
+extern int yylineno;
+int yylineno = 1;
+
+extern char *yytext;
+#ifdef yytext_ptr
+#undef yytext_ptr
+#endif
+#define yytext_ptr yytext
+
+static yy_state_type yy_get_previous_state ( void );
+static yy_state_type yy_try_NUL_trans ( yy_state_type current_state );
+static int yy_get_next_buffer ( void );
+static void yynoreturn yy_fatal_error ( const char* msg );
+
+/* Done after the current pattern has been matched and before the
+ * corresponding action - sets up yytext.
+ */
+#define YY_DO_BEFORE_ACTION \
+ (yytext_ptr) = yy_bp; \
+ yyleng = (int) (yy_cp - yy_bp); \
+ (yy_hold_char) = *yy_cp; \
+ *yy_cp = '\0'; \
+ (yy_c_buf_p) = yy_cp;
+#define YY_NUM_RULES 41
+#define YY_END_OF_BUFFER 42
+/* This struct is not used in this scanner,
+ but its presence is necessary. */
+struct yy_trans_info
+ {
+ flex_int32_t yy_verify;
+ flex_int32_t yy_nxt;
+ };
+static const flex_int16_t yy_accept[1103] =
+ { 0,
+ 0, 0, 42, 40, 1, 1, 40, 10, 40, 10,
+ 40, 40, 40, 35, 40, 40, 11, 11, 40, 40,
+ 40, 1, 0, 0, 0, 0, 10, 9, 10, 12,
+ 0, 0, 10, 10, 0, 11, 0, 35, 4, 34,
+ 0, 0, 35, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 30, 0, 0, 0, 0, 0,
+ 0, 0, 39, 11, 0, 11, 11, 11, 8, 7,
+ 0, 0, 0, 0, 0, 0, 0, 10, 10, 10,
+ 0, 12, 12, 10, 10, 10, 6, 4, 4, 0,
+ 33, 0, 21, 0, 33, 0, 18, 19, 0, 33,
+
+ 0, 31, 0, 23, 0, 33, 0, 22, 29, 0,
+ 25, 24, 20, 0, 33, 0, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 30, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 11, 11, 11,
+ 11, 11, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 10, 10, 10, 0, 0, 12, 12, 10,
+ 10, 10, 4, 2, 33, 33, 33, 33, 33, 21,
+ 26, 0, 33, 33, 33, 33, 33, 33, 33, 33,
+ 18, 19, 33, 0, 33, 33, 33, 33, 33, 33,
+
+ 33, 31, 33, 33, 33, 23, 32, 0, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 22, 29, 33,
+ 33, 33, 33, 33, 24, 20, 27, 0, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 30, 33,
+ 33, 5, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 11, 11, 38, 11, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 10, 0, 3, 12, 10, 4, 4, 33,
+
+ 33, 33, 33, 33, 21, 21, 33, 33, 33, 26,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 18,
+ 19, 18, 28, 0, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 31, 31, 33, 33, 33, 23,
+ 23, 33, 33, 33, 32, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 22, 29, 22, 33, 33, 33,
+ 33, 33, 25, 24, 20, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 30, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 25, 33, 33, 33, 30, 30, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 14, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 11, 38,
+ 38, 38, 38, 37, 0, 11, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 10, 0, 0, 12, 10, 33, 33, 33, 33, 21,
+ 21, 21, 21, 33, 33, 33, 26, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 18, 19,
+
+ 18, 18, 18, 19, 19, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 31, 31, 31, 31, 33, 33, 33, 23,
+ 23, 23, 23, 33, 33, 33, 32, 32, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 22,
+ 29, 22, 22, 22, 29, 29, 33, 33, 33, 33,
+ 33, 25, 24, 20, 25, 25, 24, 24, 20, 20,
+ 33, 33, 33, 27, 33, 33, 33, 33, 33, 33,
+ 27, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 30, 33, 33,
+
+ 33, 25, 33, 27, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 15, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 11, 38, 38, 38,
+ 38, 38, 38, 38, 38, 0, 38, 37, 38, 38,
+ 11, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 10, 12, 10, 33, 33, 33,
+ 33, 21, 21, 33, 33, 33, 26, 26, 26, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 18, 19,
+ 18, 33, 33, 33, 28, 33, 33, 33, 33, 33,
+
+ 33, 28, 33, 33, 33, 33, 33, 28, 33, 33,
+ 33, 31, 31, 33, 33, 33, 23, 23, 33, 33,
+ 33, 32, 32, 32, 32, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 22, 29, 22, 33, 33, 33,
+ 33, 33, 25, 24, 20, 33, 33, 33, 27, 27,
+ 27, 33, 33, 33, 33, 27, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 30, 33, 33, 33, 25, 33, 27, 0, 13,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+
+ 0, 0, 14, 0, 0, 0, 0, 11, 38, 36,
+ 38, 38, 38, 38, 38, 38, 38, 38, 38, 0,
+ 38, 38, 37, 38, 0, 11, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 10, 12,
+ 10, 33, 33, 33, 21, 21, 33, 33, 33, 26,
+ 33, 33, 33, 33, 33, 33, 33, 18, 19, 18,
+ 33, 33, 33, 28, 28, 28, 33, 33, 33, 33,
+ 33, 33, 33, 33, 28, 33, 33, 31, 31, 33,
+ 33, 23, 23, 33, 33, 33, 32, 32, 33, 33,
+ 33, 33, 33, 33, 33, 22, 29, 22, 33, 33,
+
+ 33, 33, 25, 24, 20, 33, 33, 33, 27, 33,
+ 33, 33, 27, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 30, 33, 33, 33, 25, 33,
+ 27, 0, 0, 0, 0, 13, 0, 0, 0, 0,
+ 0, 0, 0, 15, 0, 0, 0, 0, 0, 14,
+ 14, 0, 11, 38, 38, 38, 38, 38, 38, 38,
+ 0, 0, 38, 38, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 33, 21, 21, 33, 33,
+ 26, 33, 18, 19, 18, 33, 33, 33, 28, 33,
+ 33, 33, 33, 33, 28, 31, 31, 23, 23, 33,
+
+ 33, 32, 32, 33, 22, 29, 22, 25, 24, 20,
+ 33, 33, 27, 33, 27, 16, 0, 13, 0, 0,
+ 0, 0, 0, 15, 15, 0, 0, 38, 38, 38,
+ 0, 0, 0, 0, 38, 17, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 26, 33, 33,
+ 28, 33, 32, 32, 27, 0, 13, 13, 0, 0,
+ 38, 38, 38, 0, 0, 38, 0, 0, 0, 17,
+ 0, 0, 0, 0, 0, 0, 0, 28, 0, 38,
+ 38, 38, 0, 38, 0, 17, 0, 0, 0, 0,
+ 38, 38, 0, 38, 0, 17, 17, 0, 0, 0,
+
+ 0, 0
+ } ;
+
+static const YY_CHAR yy_ec[256] =
+ { 0,
+ 1, 1, 1, 1, 1, 1, 1, 1, 2, 3,
+ 1, 4, 5, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 6, 7, 8, 9, 10, 11, 10, 12, 13,
+ 14, 15, 10, 10, 16, 17, 18, 19, 20, 21,
+ 22, 23, 24, 25, 26, 27, 28, 10, 10, 29,
+ 30, 31, 10, 32, 33, 34, 35, 36, 37, 38,
+ 39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
+ 42, 49, 50, 51, 52, 42, 42, 53, 42, 54,
+ 10, 55, 10, 10, 42, 10, 56, 57, 58, 59,
+
+ 60, 61, 62, 63, 64, 42, 65, 66, 67, 68,
+ 69, 70, 42, 71, 72, 73, 74, 42, 42, 75,
+ 42, 76, 10, 77, 10, 78, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 79,
+ 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
+ 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
+ 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
+ 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
+
+ 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
+ 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
+ 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
+ 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
+ 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
+ 79, 79, 79, 79, 79
+ } ;
+
+static const YY_CHAR yy_meta[80] =
+ { 0,
+ 1, 2, 3, 3, 3, 2, 2, 4, 2, 2,
+ 2, 4, 5, 2, 2, 6, 2, 7, 8, 8,
+ 8, 8, 8, 8, 8, 8, 8, 8, 2, 2,
+ 2, 2, 9, 9, 9, 9, 9, 9, 9, 9,
+ 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+ 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+ 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+ 9, 9, 9, 9, 9, 9, 2, 2, 9
+ } ;
+
+static const flex_int16_t yy_base[1137] =
+ { 0,
+ 0, 0, 4195, 7110, 78, 83, 88, 87, 78, 85,
+ 82, 88, 4161, 142, 4151, 90, 86, 206, 259, 4118,
+ 4083, 98, 234, 4083, 72, 109, 116, 7110, 318, 100,
+ 4082, 361, 208, 420, 4017, 92, 463, 205, 4024, 7110,
+ 3977, 222, 0, 3974, 209, 89, 257, 202, 180, 245,
+ 248, 259, 355, 272, 3955, 524, 3987, 83, 280, 311,
+ 274, 585, 7110, 117, 637, 348, 210, 697, 7110, 7110,
+ 3963, 302, 382, 243, 3940, 3933, 371, 251, 356, 757,
+ 3945, 101, 817, 246, 357, 877, 7110, 3938, 252, 920,
+ 3894, 974, 3886, 1017, 397, 447, 3861, 3860, 661, 376,
+
+ 904, 3850, 721, 3841, 448, 451, 1040, 3840, 3825, 1045,
+ 3813, 3796, 3787, 1063, 569, 600, 3784, 1137, 484, 1180,
+ 613, 1221, 748, 380, 566, 347, 591, 907, 654, 462,
+ 3767, 3789, 118, 559, 779, 633, 593, 588, 628, 782,
+ 654, 3776, 775, 3775, 802, 772, 682, 336, 1279, 345,
+ 447, 1322, 3754, 254, 695, 837, 658, 581, 632, 656,
+ 806, 1012, 456, 862, 1365, 3744, 256, 903, 1408, 278,
+ 964, 1451, 3730, 7110, 3689, 1511, 839, 751, 790, 3655,
+ 3633, 1086, 865, 3648, 3645, 868, 812, 3627, 850, 3599,
+ 3559, 3554, 895, 897, 344, 3587, 3580, 885, 900, 892,
+
+ 922, 3526, 1001, 929, 943, 3484, 3483, 1165, 1002, 3500,
+ 3499, 1037, 1074, 945, 3485, 969, 3476, 3439, 3424, 1096,
+ 3450, 410, 3442, 438, 3403, 3397, 3396, 1109, 1104, 3416,
+ 3396, 745, 1554, 1126, 1597, 1199, 1638, 1237, 1696, 1591,
+ 1451, 1224, 1636, 1495, 1673, 1680, 1762, 1836, 1318, 1740,
+ 1703, 7110, 573, 1049, 1161, 1158, 970, 987, 1131, 1017,
+ 1192, 1245, 3385, 3371, 1046, 1269, 1252, 3369, 3358, 1342,
+ 1600, 1403, 1552, 1788, 1263, 1891, 1796, 1934, 3362, 1868,
+ 1238, 1307, 1248, 3350, 3304, 1055, 1352, 1779, 1931, 1391,
+ 1392, 1393, 1983, 3284, 7110, 2026, 2069, 3253, 347, 892,
+
+ 2112, 1392, 1108, 1110, 1248, 1488, 1500, 3239, 3204, 3174,
+ 1541, 3194, 3177, 2112, 1624, 1119, 3145, 1176, 3142, 1861,
+ 1873, 1878, 3104, 1704, 1607, 3071, 2999, 1394, 2951, 2939,
+ 1979, 1503, 1180, 1209, 1896, 1901, 1669, 1259, 1273, 1936,
+ 1971, 1707, 1278, 1296, 2904, 1691, 2927, 2900, 2022, 1731,
+ 1336, 2867, 1403, 2856, 1994, 2027, 2063, 1753, 2851, 716,
+ 2848, 950, 2068, 2106, 2117, 1786, 2836, 2831, 1793, 2833,
+ 2795, 2150, 2191, 1807, 2234, 2138, 2275, 2156, 2333, 2228,
+ 2237, 2273, 2344, 2358, 2367, 2378, 2449, 2523, 2189, 2433,
+ 2413, 1498, 2121, 2020, 2269, 2451, 1769, 2278, 1797, 2271,
+
+ 1426, 1684, 1625, 2322, 1465, 2311, 2342, 2464, 2148, 2457,
+ 2261, 1528, 2388, 2423, 2759, 1179, 1347, 2149, 2296, 2245,
+ 2683, 2676, 1875, 1831, 2535, 2548, 1910, 2480, 2177, 2645,
+ 2637, 2383, 2555, 7110, 2446, 2468, 2600, 2595, 2508, 2546,
+ 2570, 2561, 2456, 2552, 2533, 2540, 1981, 2561, 2614, 2651,
+ 2674, 741, 457, 7110, 2729, 2807, 2597, 661, 2134, 2596,
+ 2579, 1548, 1591, 2330, 2405, 2814, 2604, 1589, 2641, 97,
+ 2882, 2584, 771, 2942, 3003, 3046, 2605, 1637, 1675, 2688,
+ 2695, 2537, 1235, 2639, 2556, 2555, 2710, 2662, 2543, 2538,
+ 2819, 1925, 2402, 2684, 1849, 2508, 1979, 2507, 2715, 2720,
+
+ 2844, 2463, 1448, 2462, 1598, 2832, 2475, 2463, 2837, 2420,
+ 2412, 2894, 2582, 2374, 2365, 3042, 2023, 2628, 2816, 2853,
+ 2025, 2109, 2889, 2919, 2312, 1614, 2857, 2229, 2270, 2929,
+ 3047, 2262, 1615, 2931, 2423, 2439, 3052, 3083, 3071, 2289,
+ 2269, 3106, 2300, 2407, 3094, 2461, 2233, 2530, 2232, 3119,
+ 3124, 3129, 2191, 1714, 2183, 1734, 3117, 2186, 1033, 2175,
+ 1110, 3142, 3147, 3152, 2135, 1803, 2132, 2181, 2103, 2338,
+ 3076, 2090, 2077, 3160, 3148, 2035, 2003, 3172, 3132, 3134,
+ 0, 3213, 1864, 3230, 3173, 3254, 3181, 3312, 3378, 3437,
+ 3511, 3581, 3656, 3723, 3785, 3859, 3933, 3219, 3988, 4050,
+
+ 3236, 2813, 3269, 2888, 2606, 2901, 3277, 3160, 2608, 2666,
+ 3251, 3162, 3338, 3190, 2881, 3264, 7110, 3191, 3285, 1994,
+ 1985, 2987, 3302, 3350, 3326, 3303, 3358, 3340, 1965, 1964,
+ 3341, 3369, 3367, 3038, 3373, 3009, 4107, 3394, 1039, 3416,
+ 4166, 696, 4225, 3442, 3463, 3481, 3497, 3517, 4285, 4346,
+ 4407, 3059, 3408, 3193, 1957, 1942, 3295, 3430, 3539, 3544,
+ 3283, 2258, 3485, 311, 4467, 4510, 4553, 4596, 590, 2669,
+ 3080, 3327, 3553, 3451, 1920, 1919, 3559, 1876, 2372, 805,
+ 1897, 1896, 3572, 3260, 3261, 1801, 3311, 1794, 3565, 3614,
+ 3619, 3505, 1764, 1751, 3626, 3572, 1712, 1704, 3635, 3537,
+
+ 3597, 0, 842, 1683, 1668, 3640, 3543, 0, 962, 3354,
+ 3355, 3645, 3661, 1143, 3420, 3436, 3672, 3681, 3673, 3477,
+ 3547, 3701, 3710, 1613, 2478, 1302, 1608, 1607, 3716, 3707,
+ 3553, 1605, 3554, 1537, 3732, 3737, 3748, 3732, 1529, 1796,
+ 1502, 1830, 3762, 3770, 3777, 3774, 1498, 1459, 3798, 1394,
+ 3135, 1339, 1384, 1374, 3811, 0, 4639, 3784, 1740, 3822,
+ 2122, 3822, 3869, 3895, 3916, 3941, 3970, 3978, 3995, 4699,
+ 4002, 3880, 4083, 4105, 3722, 0, 3634, 0, 1410, 7110,
+ 3904, 3810, 1349, 1342, 3782, 3868, 4066, 4635, 3883, 3654,
+ 3856, 1427, 3908, 1333, 1308, 3944, 4176, 3996, 3768, 3982,
+
+ 1575, 4001, 4071, 4011, 3853, 4024, 1763, 4756, 4088, 7110,
+ 1487, 3423, 4816, 896, 3208, 4876, 4262, 4444, 4919, 4504,
+ 4547, 4591, 4677, 4979, 5040, 5101, 3896, 4040, 4023, 1274,
+ 1266, 3798, 4080, 4509, 4041, 4065, 4639, 1821, 4709, 5144,
+ 5187, 5230, 3632, 3726, 4208, 4213, 2076, 1260, 1207, 4231,
+ 1176, 1123, 4793, 3760, 1108, 3762, 1099, 4236, 4322, 4327,
+ 4093, 1043, 1038, 4332, 994, 3434, 2212, 1028, 1002, 4913,
+ 992, 951, 4552, 3833, 0, 3946, 3953, 4474, 4479, 4041,
+ 4059, 4645, 4716, 2284, 4091, 4106, 4721, 4733, 929, 840,
+ 4919, 4115, 838, 4116, 837, 4738, 4743, 4756, 811, 2240,
+
+ 777, 3157, 4763, 4798, 4803, 2371, 745, 718, 4823, 658,
+ 646, 5138, 0, 4956, 5225, 5181, 5269, 5279, 5291, 5296,
+ 5303, 5315, 5386, 5143, 5350, 5369, 5375, 5394, 5408, 5448,
+ 5413, 642, 4130, 618, 583, 7110, 4253, 5467, 4134, 4243,
+ 5276, 2587, 4250, 4854, 4277, 4128, 4675, 2903, 4432, 7110,
+ 526, 2948, 4859, 1544, 4963, 5522, 1357, 3705, 5565, 5608,
+ 5472, 5669, 5477, 5730, 4466, 5171, 4581, 508, 493, 4435,
+ 5496, 4865, 4634, 5275, 3053, 5506, 5511, 5565, 478, 449,
+ 4864, 5767, 5602, 5607, 5772, 3203, 451, 445, 4924, 443,
+ 442, 5777, 5790, 5795, 5805, 5812, 5835, 5853, 5859, 4140,
+
+ 4164, 4984, 5017, 5866, 5871, 5876, 5881, 5889, 5894, 5899,
+ 411, 381, 5022, 5907, 5913, 7110, 4866, 5027, 5214, 4678,
+ 5521, 3400, 4944, 7110, 370, 3468, 3483, 5950, 5993, 6036,
+ 5987, 6030, 6096, 0, 6139, 7110, 5502, 5131, 4161, 4218,
+ 4832, 5304, 6035, 5313, 4441, 5307, 3527, 5992, 344, 285,
+ 5490, 6133, 6073, 6138, 6176, 5382, 7110, 296, 3629, 3675,
+ 6213, 6256, 6299, 6199, 6342, 6385, 5403, 237, 230, 7110,
+ 5415, 6212, 6255, 5439, 3976, 5380, 3852, 6293, 3928, 6428,
+ 6471, 6514, 6557, 6600, 5441, 5531, 5500, 5100, 5886, 4057,
+ 6643, 6686, 6729, 5612, 5628, 7110, 133, 4058, 6772, 4181,
+
+ 6336, 7110, 6833, 6837, 6846, 6850, 6855, 6864, 6873, 6882,
+ 6891, 6900, 112, 6904, 6913, 6922, 6931, 6940, 6949, 6958,
+ 6967, 6976, 6984, 6993, 7002, 7011, 7020, 7029, 7038, 7047,
+ 7056, 7065, 7074, 7083, 7092, 7100
+ } ;
+
+static const flex_int16_t yy_def[1137] =
+ { 0,
+ 1102, 1, 1102, 1102, 1102, 1102, 1102, 1103, 1104, 1105,
+ 1106, 1102, 1102, 1102, 1102, 1102, 1107, 1107, 1108, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1103, 1102, 1109, 1104,
+ 1102, 1110, 1105, 1111, 1102, 1107, 1108, 14, 1112, 1102,
+ 1113, 1102, 14, 1114, 1114, 1114, 1114, 1114, 1114, 1114,
+ 1114, 1114, 1114, 1114, 1114, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1107, 1115, 1107, 1107, 1107, 1102, 1102,
+ 1116, 1102, 1102, 1102, 1102, 1102, 1102, 1103, 1103, 1103,
+ 1117, 1104, 1104, 1105, 1105, 1105, 1102, 1112, 1118, 56,
+ 1114, 1119, 1114, 1119, 1114, 94, 1114, 1114, 94, 1114,
+
+ 94, 1114, 94, 1114, 94, 1114, 94, 1114, 1114, 94,
+ 1114, 1114, 1114, 94, 1114, 94, 1114, 1114, 118, 118,
+ 118, 118, 118, 1114, 1114, 1114, 1114, 1114, 1114, 1114,
+ 1114, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1107, 68, 1107,
+ 1107, 68, 1116, 1120, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1103, 1103, 80, 1117, 1121, 1104, 83, 1105,
+ 1105, 86, 1122, 1102, 1114, 118, 176, 176, 176, 1114,
+ 1114, 94, 176, 176, 176, 176, 176, 176, 176, 176,
+ 1114, 1114, 1114, 94, 176, 176, 176, 1114, 176, 176,
+
+ 176, 1114, 176, 176, 176, 1114, 1114, 94, 176, 176,
+ 176, 1114, 176, 176, 176, 176, 176, 1114, 1114, 176,
+ 176, 176, 176, 176, 1114, 1114, 1114, 94, 176, 176,
+ 176, 1114, 118, 233, 233, 233, 233, 233, 233, 239,
+ 239, 239, 239, 239, 239, 239, 239, 233, 248, 248,
+ 239, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1107, 68, 1123, 68, 1124, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 80, 1125, 1102, 83, 86, 1122, 1126, 1114,
+
+ 176, 301, 301, 301, 301, 301, 176, 176, 176, 1114,
+ 301, 301, 301, 301, 301, 301, 301, 301, 301, 301,
+ 301, 301, 1114, 94, 176, 176, 176, 301, 301, 301,
+ 301, 301, 301, 301, 301, 301, 301, 301, 301, 301,
+ 301, 176, 176, 176, 1114, 301, 301, 301, 301, 301,
+ 301, 301, 301, 301, 301, 301, 301, 301, 301, 301,
+ 301, 301, 301, 301, 301, 176, 176, 176, 301, 301,
+ 301, 301, 233, 373, 373, 373, 373, 373, 373, 379,
+ 379, 379, 379, 379, 379, 379, 379, 373, 388, 388,
+ 379, 1114, 1114, 1114, 1114, 373, 1114, 1114, 1114, 1114,
+
+ 1114, 1114, 1114, 1114, 1114, 1114, 1114, 1114, 1114, 1114,
+ 373, 1114, 1114, 373, 1114, 1114, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 276, 1123,
+ 1123, 1127, 1128, 1102, 1102, 276, 1129, 1130, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1131, 1132, 1133, 1102, 86, 301, 476, 476, 476, 476,
+ 476, 1114, 1114, 301, 301, 301, 301, 476, 476, 476,
+ 476, 1114, 1114, 476, 476, 476, 476, 476, 476, 476,
+
+ 476, 1114, 1114, 1114, 1114, 176, 176, 176, 301, 301,
+ 301, 301, 476, 476, 476, 476, 1114, 1114, 476, 476,
+ 476, 476, 476, 476, 1114, 1114, 476, 476, 476, 476,
+ 476, 1114, 1114, 301, 301, 301, 301, 301, 476, 476,
+ 476, 476, 1114, 1114, 476, 476, 476, 476, 476, 476,
+ 476, 476, 1114, 1114, 1114, 1114, 476, 476, 476, 476,
+ 476, 476, 476, 476, 1114, 1114, 1114, 1114, 1114, 1114,
+ 301, 301, 301, 301, 476, 476, 476, 476, 1114, 1114,
+ 476, 373, 582, 582, 582, 582, 582, 582, 582, 582,
+ 582, 582, 582, 582, 590, 590, 582, 582, 582, 590,
+
+ 582, 582, 582, 582, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 276, 1102, 1127, 1102,
+ 1134, 1128, 1135, 1123, 1123, 1102, 1123, 1123, 1123, 1102,
+ 456, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1131, 474, 475, 476, 668, 668,
+ 668, 668, 668, 476, 476, 476, 476, 1114, 1114, 668,
+ 668, 668, 668, 668, 668, 668, 668, 668, 668, 668,
+ 668, 301, 301, 301, 301, 476, 476, 476, 476, 1114,
+
+ 1114, 476, 668, 668, 668, 668, 668, 668, 668, 668,
+ 668, 668, 668, 668, 668, 668, 668, 668, 476, 476,
+ 476, 476, 476, 1114, 1114, 668, 668, 668, 668, 668,
+ 668, 668, 668, 668, 668, 668, 668, 668, 668, 668,
+ 668, 668, 668, 668, 668, 476, 476, 476, 476, 1114,
+ 1114, 668, 668, 668, 668, 668, 582, 757, 757, 757,
+ 757, 757, 757, 757, 757, 757, 757, 757, 757, 757,
+ 757, 757, 757, 757, 757, 757, 757, 757, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 276, 1102, 1102,
+ 1127, 1127, 1127, 1128, 1128, 1128, 1123, 1123, 649, 1136,
+ 1136, 1123, 1136, 649, 1102, 651, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1131, 474,
+ 475, 668, 842, 842, 842, 842, 668, 668, 668, 668,
+ 842, 842, 842, 842, 842, 842, 842, 842, 842, 842,
+ 476, 476, 476, 476, 1114, 1114, 668, 668, 668, 668,
+ 842, 842, 842, 842, 842, 842, 842, 842, 842, 842,
+ 842, 842, 842, 668, 668, 668, 668, 668, 842, 842,
+ 842, 842, 842, 842, 842, 842, 842, 842, 842, 842,
+
+ 842, 842, 842, 842, 842, 668, 668, 668, 668, 842,
+ 842, 842, 842, 1114, 1114, 1114, 1114, 1114, 1114, 1114,
+ 1114, 1114, 1114, 1114, 1114, 1114, 1114, 1114, 1114, 1114,
+ 1114, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 826, 1127, 1127, 813, 1128, 1128, 816, 649,
+ 1136, 1102, 1136, 824, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1114, 1114, 1114, 842, 842,
+ 842, 1114, 1114, 1114, 1114, 668, 668, 668, 668, 842,
+ 842, 842, 1114, 1114, 1114, 1114, 1114, 1114, 1114, 842,
+
+ 842, 842, 842, 1114, 1114, 1114, 1114, 1114, 1114, 1114,
+ 842, 842, 842, 1114, 1114, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 813, 816, 649,
+ 1136, 1136, 1136, 962, 824, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1114, 842, 842,
+ 842, 1114, 1114, 1114, 1114, 1102, 1102, 1102, 1102, 1102,
+ 813, 816, 649, 1136, 1033, 824, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1114, 1102, 813,
+ 816, 649, 1033, 824, 1102, 1102, 1102, 1102, 1102, 1102,
+ 813, 816, 1033, 1082, 1102, 1102, 1102, 1102, 1033, 1102,
+
+ 1136, 0, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102
+ } ;
+
+static const flex_int16_t yy_nxt[7190] =
+ { 0,
+ 4, 5, 6, 5, 5, 5, 7, 8, 9, 4,
+ 4, 10, 4, 4, 4, 11, 12, 13, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14, 15, 4,
+ 4, 16, 17, 17, 17, 17, 17, 17, 17, 17,
+ 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
+ 17, 18, 17, 17, 19, 17, 17, 17, 17, 17,
+ 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
+ 17, 17, 17, 18, 17, 17, 20, 21, 17, 22,
+ 22, 22, 22, 22, 22, 22, 22, 22, 22, 23,
+ 23, 23, 23, 23, 28, 31, 28, 35, 63, 22,
+
+ 22, 22, 22, 22, 63, 24, 38, 38, 38, 38,
+ 38, 38, 38, 38, 38, 38, 72, 1102, 1102, 75,
+ 44, 76, 133, 28, 58, 95, 73, 74, 25, 63,
+ 59, 75, 32, 76, 60, 1096, 37, 61, 72, 34,
+ 65, 29, 26, 96, 62, 133, 65, 58, 95, 77,
+ 253, 25, 40, 59, 32, 32, 60, 41, 42, 61,
+ 43, 43, 43, 43, 43, 43, 43, 43, 43, 43,
+ 29, 65, 77, 253, 44, 44, 45, 46, 47, 44,
+ 48, 49, 50, 44, 51, 44, 52, 44, 44, 53,
+ 54, 55, 44, 44, 44, 44, 56, 44, 44, 45,
+
+ 46, 47, 44, 48, 49, 50, 51, 44, 52, 44,
+ 44, 53, 54, 55, 44, 44, 44, 44, 63, 28,
+ 44, 1102, 63, 38, 38, 38, 38, 38, 38, 38,
+ 38, 38, 38, 102, 103, 23, 23, 23, 23, 23,
+ 38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
+ 100, 24, 1086, 93, 66, 102, 101, 28, 28, 1086,
+ 65, 161, 34, 94, 65, 75, 89, 76, 154, 174,
+ 167, 280, 100, 295, 25, 93, 66, 68, 68, 68,
+ 68, 68, 68, 68, 68, 68, 68, 106, 26, 28,
+ 104, 68, 68, 68, 68, 68, 68, 25, 1057, 105,
+
+ 34, 97, 107, 108, 115, 29, 138, 1078, 109, 98,
+ 106, 99, 104, 110, 68, 68, 68, 68, 68, 68,
+ 27, 27, 79, 97, 134, 108, 116, 115, 139, 138,
+ 109, 98, 34, 158, 135, 159, 80, 80, 80, 80,
+ 80, 80, 80, 80, 80, 80, 134, 136, 63, 155,
+ 80, 80, 80, 80, 80, 80, 156, 277, 27, 33,
+ 63, 299, 328, 28, 174, 137, 1078, 329, 28, 330,
+ 136, 155, 1024, 80, 80, 80, 80, 80, 80, 83,
+ 83, 83, 83, 83, 83, 83, 83, 83, 83, 111,
+ 65, 150, 104, 83, 83, 83, 83, 83, 83, 65,
+
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+ 1082, 1082, 1082, 1082, 1082, 1082, 1082, 1036, 1102, 1102,
+ 1102, 1082, 1082, 1082, 1082, 1082, 1082, 1031, 1031, 1031,
+ 1064, 1031, 1102, 1102, 1102, 1102, 1102, 92, 1102, 454,
+ 1102, 1102, 1102, 1102, 1082, 1082, 1082, 1082, 1082, 1082,
+ 1083, 1083, 1083, 1083, 1083, 1083, 1083, 1083, 1083, 1083,
+ 1102, 1102, 1102, 1102, 1083, 1083, 1083, 1083, 1083, 1083,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 962, 1102, 1102, 1102, 1102, 1102, 1102, 1083, 1083, 1083,
+
+ 1083, 1083, 1083, 1084, 1084, 1084, 1084, 1084, 1084, 1084,
+ 1084, 1084, 1084, 1102, 1102, 1102, 1102, 1084, 1084, 1084,
+ 1084, 1084, 1084, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1084, 1084, 1084, 1084, 1084, 1084, 1091, 1091, 1091, 1091,
+ 1091, 1091, 1091, 1091, 1091, 1091, 1102, 1102, 1102, 1102,
+ 1091, 1091, 1091, 1091, 1091, 1091, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1091, 1091, 1091, 1091, 1091, 1091, 1092,
+ 1092, 1092, 1092, 1092, 1092, 1092, 1092, 1092, 1092, 1102,
+
+ 1102, 1102, 1102, 1092, 1092, 1092, 1092, 1092, 1092, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1092, 1092, 1092, 1092,
+ 1092, 1092, 451, 451, 451, 451, 451, 451, 451, 451,
+ 451, 451, 1102, 1102, 1102, 1102, 451, 451, 451, 451,
+ 451, 451, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 451,
+ 451, 451, 451, 451, 451, 1093, 1093, 1093, 1093, 1093,
+ 1093, 1093, 1093, 1093, 1093, 1102, 1102, 1102, 1102, 1093,
+ 1093, 1093, 1093, 1093, 1093, 1102, 1102, 1102, 1102, 1102,
+
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1093, 1093, 1093, 1093, 1093, 1093, 1094, 1094,
+ 1094, 1094, 1094, 1094, 1094, 1094, 1094, 1094, 1102, 1102,
+ 1102, 1102, 1094, 1094, 1094, 1094, 1094, 1094, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1094, 1094, 1094, 1094, 1094,
+ 1094, 639, 639, 639, 639, 639, 639, 639, 639, 639,
+ 639, 1102, 1102, 1102, 1102, 639, 639, 639, 639, 639,
+ 639, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 639, 639,
+
+ 639, 639, 639, 639, 642, 642, 642, 642, 642, 642,
+ 642, 642, 642, 642, 1102, 1102, 1102, 1102, 642, 642,
+ 642, 642, 642, 642, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 642, 642, 642, 642, 642, 642, 1099, 1099, 1099,
+ 1099, 1099, 1099, 1099, 1099, 1099, 1099, 1102, 1102, 1102,
+ 1102, 1099, 1099, 1099, 1099, 1099, 1099, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1099, 1099, 1099, 1099, 1099, 1099,
+ 1101, 1101, 1101, 1101, 1101, 1101, 1101, 1101, 1101, 1101,
+
+ 1102, 1102, 1102, 1102, 1101, 1101, 1101, 1101, 1101, 1101,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1101, 1101, 1101,
+ 1101, 1101, 1101, 27, 27, 1102, 27, 27, 27, 27,
+ 27, 27, 30, 30, 30, 30, 33, 33, 1102, 33,
+ 33, 33, 33, 33, 33, 36, 1102, 1102, 36, 64,
+ 64, 1102, 64, 64, 67, 67, 1102, 67, 67, 67,
+ 67, 67, 67, 78, 78, 78, 78, 78, 78, 78,
+ 78, 78, 82, 82, 1102, 82, 82, 82, 82, 82,
+ 82, 84, 84, 84, 84, 84, 84, 84, 84, 84,
+
+ 88, 88, 88, 88, 88, 88, 88, 88, 88, 91,
+ 1102, 91, 91, 148, 148, 1102, 148, 148, 148, 148,
+ 148, 148, 153, 153, 153, 153, 153, 153, 153, 153,
+ 153, 166, 166, 166, 166, 166, 166, 166, 166, 166,
+ 173, 173, 173, 173, 173, 173, 173, 173, 173, 175,
+ 175, 1102, 175, 175, 175, 175, 175, 175, 279, 279,
+ 279, 279, 279, 279, 279, 279, 279, 294, 294, 294,
+ 294, 294, 294, 294, 294, 294, 298, 298, 298, 298,
+ 298, 298, 298, 298, 298, 451, 451, 451, 1102, 451,
+ 451, 451, 451, 457, 457, 457, 457, 457, 457, 457,
+
+ 457, 457, 472, 472, 472, 472, 472, 472, 472, 472,
+ 472, 173, 173, 173, 173, 173, 173, 173, 173, 173,
+ 639, 639, 1102, 639, 639, 639, 639, 639, 639, 642,
+ 642, 1102, 642, 642, 642, 642, 642, 642, 457, 457,
+ 457, 457, 457, 457, 457, 457, 457, 279, 279, 279,
+ 279, 279, 279, 279, 279, 279, 27, 27, 27, 27,
+ 27, 27, 27, 27, 27, 472, 472, 472, 472, 472,
+ 472, 472, 472, 472, 294, 294, 294, 294, 294, 294,
+ 294, 294, 294, 811, 811, 811, 811, 811, 811, 811,
+ 811, 811, 814, 814, 814, 814, 814, 814, 814, 814,
+
+ 814, 961, 961, 1102, 1102, 961, 961, 961, 961, 3,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102
+ } ;
+
+static const flex_int16_t yy_chk[7190] =
+ { 0,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 5,
+ 5, 5, 5, 5, 6, 6, 6, 6, 6, 7,
+ 7, 7, 7, 7, 8, 9, 10, 11, 17, 22,
+
+ 22, 22, 22, 22, 36, 7, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 25, 30, 82, 470,
+ 1113, 470, 58, 27, 16, 46, 25, 26, 7, 64,
+ 16, 26, 9, 26, 16, 1097, 11, 16, 25, 10,
+ 17, 8, 7, 46, 16, 58, 36, 16, 46, 26,
+ 133, 7, 14, 16, 30, 82, 16, 14, 14, 16,
+ 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+ 27, 64, 26, 133, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+
+ 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14, 18, 33,
+ 14, 38, 67, 38, 38, 38, 38, 38, 38, 38,
+ 38, 38, 38, 49, 49, 23, 23, 23, 23, 23,
+ 42, 42, 42, 42, 42, 42, 42, 42, 42, 42,
+ 48, 23, 1069, 45, 18, 49, 48, 84, 78, 1068,
+ 18, 74, 33, 45, 67, 74, 89, 74, 154, 89,
+ 167, 154, 48, 167, 23, 45, 18, 19, 19, 19,
+ 19, 19, 19, 19, 19, 19, 19, 51, 23, 170,
+ 50, 19, 19, 19, 19, 19, 19, 23, 1058, 50,
+
+ 84, 47, 51, 52, 54, 78, 61, 1050, 52, 47,
+ 51, 47, 50, 52, 19, 19, 19, 19, 19, 19,
+ 29, 29, 29, 47, 59, 52, 54, 54, 61, 61,
+ 52, 47, 170, 664, 59, 664, 29, 29, 29, 29,
+ 29, 29, 29, 29, 29, 29, 59, 60, 148, 72,
+ 29, 29, 29, 29, 29, 29, 72, 150, 79, 85,
+ 66, 299, 195, 79, 299, 60, 1049, 195, 85, 195,
+ 60, 72, 1025, 29, 29, 29, 29, 29, 29, 32,
+ 32, 32, 32, 32, 32, 32, 32, 32, 32, 53,
+ 148, 66, 126, 32, 32, 32, 32, 32, 32, 150,
+
+ 73, 126, 66, 1012, 73, 53, 73, 53, 100, 53,
+ 79, 85, 53, 66, 126, 77, 32, 32, 32, 32,
+ 32, 32, 34, 34, 34, 77, 73, 53, 124, 53,
+ 100, 100, 222, 1011, 124, 95, 222, 77, 34, 34,
+ 34, 34, 34, 34, 34, 34, 34, 34, 73, 151,
+ 124, 95, 34, 34, 34, 34, 34, 34, 95, 151,
+ 224, 991, 990, 163, 224, 96, 105, 988, 453, 96,
+ 105, 96, 105, 987, 980, 34, 34, 34, 34, 34,
+ 34, 37, 37, 37, 37, 37, 37, 37, 37, 37,
+ 37, 96, 105, 105, 130, 37, 37, 37, 37, 37,
+
+ 37, 151, 119, 979, 106, 106, 119, 119, 119, 119,
+ 163, 453, 969, 96, 105, 105, 130, 130, 37, 37,
+ 37, 37, 37, 37, 56, 56, 106, 968, 951, 56,
+ 56, 56, 56, 56, 56, 56, 56, 56, 56, 56,
+ 56, 56, 56, 56, 56, 56, 56, 56, 56, 56,
+ 56, 56, 56, 56, 56, 56, 56, 56, 56, 56,
+ 56, 56, 56, 56, 56, 56, 56, 56, 56, 56,
+ 56, 56, 56, 56, 56, 56, 56, 56, 56, 56,
+ 56, 56, 56, 56, 56, 56, 56, 56, 56, 56,
+ 56, 56, 56, 56, 56, 56, 56, 56, 56, 56,
+
+ 56, 56, 56, 62, 115, 935, 134, 62, 62, 62,
+ 62, 137, 669, 134, 669, 137, 158, 137, 116, 125,
+ 125, 253, 116, 115, 116, 62, 138, 115, 134, 62,
+ 127, 121, 62, 121, 121, 121, 121, 121, 121, 158,
+ 934, 125, 138, 253, 116, 127, 139, 932, 62, 138,
+ 139, 62, 139, 127, 62, 65, 65, 65, 65, 65,
+ 65, 65, 65, 65, 65, 911, 116, 159, 136, 65,
+ 65, 65, 65, 65, 65, 458, 157, 910, 458, 99,
+ 157, 141, 157, 99, 99, 99, 99, 136, 129, 141,
+ 159, 136, 65, 65, 65, 65, 65, 65, 68, 68,
+
+ 68, 68, 68, 160, 129, 99, 129, 642, 129, 68,
+ 160, 129, 141, 99, 147, 68, 68, 68, 68, 68,
+ 68, 68, 68, 68, 68, 160, 129, 99, 129, 68,
+ 68, 68, 68, 68, 68, 99, 147, 147, 360, 103,
+ 908, 155, 360, 103, 103, 103, 103, 232, 452, 155,
+ 642, 68, 68, 68, 68, 68, 68, 68, 80, 80,
+ 80, 80, 80, 155, 80, 103, 123, 907, 123, 123,
+ 123, 123, 123, 123, 103, 80, 80, 80, 80, 80,
+ 80, 80, 80, 80, 80, 473, 178, 103, 473, 80,
+ 80, 80, 80, 80, 80, 452, 103, 135, 901, 232,
+
+ 140, 135, 143, 135, 140, 140, 140, 140, 146, 178,
+ 143, 80, 80, 80, 80, 80, 80, 80, 83, 83,
+ 83, 83, 83, 135, 161, 179, 146, 680, 161, 680,
+ 161, 146, 899, 143, 83, 83, 83, 83, 83, 83,
+ 83, 83, 83, 83, 83, 135, 145, 187, 179, 83,
+ 83, 83, 83, 83, 83, 156, 145, 177, 895, 893,
+ 156, 177, 156, 177, 164, 703, 890, 703, 145, 164,
+ 187, 83, 83, 83, 83, 83, 83, 83, 86, 86,
+ 86, 86, 86, 183, 156, 189, 186, 183, 86, 183,
+ 186, 186, 186, 186, 300, 86, 86, 86, 86, 86,
+
+ 86, 86, 86, 86, 86, 168, 156, 814, 189, 86,
+ 86, 86, 86, 86, 86, 194, 164, 198, 199, 194,
+ 168, 194, 101, 199, 200, 199, 101, 101, 101, 101,
+ 193, 86, 86, 86, 86, 86, 86, 86, 90, 198,
+ 198, 194, 90, 90, 90, 90, 300, 200, 101, 193,
+ 814, 128, 101, 193, 201, 889, 128, 168, 90, 90,
+ 90, 128, 90, 194, 90, 204, 171, 90, 90, 90,
+ 101, 872, 362, 128, 101, 171, 362, 201, 128, 205,
+ 214, 90, 90, 90, 90, 709, 90, 709, 204, 90,
+ 90, 90, 92, 92, 92, 92, 92, 92, 92, 92,
+
+ 92, 92, 205, 214, 216, 257, 92, 92, 92, 92,
+ 92, 92, 871, 162, 162, 162, 162, 162, 171, 203,
+ 209, 869, 258, 203, 209, 203, 209, 216, 257, 92,
+ 92, 92, 92, 92, 92, 94, 94, 94, 94, 94,
+ 94, 94, 94, 94, 94, 258, 639, 868, 865, 94,
+ 94, 94, 94, 94, 94, 559, 162, 260, 107, 559,
+ 863, 94, 107, 110, 107, 862, 162, 110, 110, 110,
+ 110, 260, 94, 94, 94, 94, 94, 94, 162, 107,
+ 260, 114, 265, 94, 107, 114, 114, 114, 114, 110,
+ 212, 212, 213, 639, 110, 254, 213, 213, 213, 213,
+
+ 265, 286, 107, 254, 182, 265, 107, 114, 182, 286,
+ 182, 110, 212, 114, 220, 114, 110, 254, 220, 220,
+ 220, 220, 229, 286, 182, 857, 229, 228, 229, 114,
+ 182, 228, 561, 228, 855, 114, 561, 114, 118, 118,
+ 118, 118, 118, 303, 234, 304, 852, 182, 234, 234,
+ 234, 234, 182, 228, 316, 118, 118, 118, 118, 118,
+ 118, 118, 118, 118, 118, 714, 303, 714, 304, 118,
+ 118, 118, 118, 118, 118, 228, 256, 316, 259, 255,
+ 256, 416, 256, 208, 255, 259, 255, 208, 208, 208,
+ 208, 118, 118, 118, 118, 118, 118, 118, 120, 851,
+
+ 259, 120, 120, 120, 120, 120, 120, 120, 255, 208,
+ 261, 318, 333, 120, 261, 120, 261, 236, 208, 236,
+ 236, 236, 236, 236, 236, 242, 242, 242, 242, 242,
+ 255, 208, 849, 416, 318, 333, 120, 483, 120, 122,
+ 208, 334, 122, 122, 122, 122, 122, 122, 122, 305,
+ 305, 305, 305, 305, 122, 238, 122, 238, 238, 238,
+ 238, 238, 238, 262, 334, 275, 283, 262, 242, 262,
+ 267, 283, 242, 283, 267, 275, 267, 122, 242, 122,
+ 149, 149, 149, 149, 149, 848, 281, 266, 831, 483,
+ 242, 266, 281, 266, 242, 338, 830, 149, 149, 149,
+
+ 149, 149, 149, 149, 149, 149, 149, 266, 281, 339,
+ 343, 149, 149, 149, 149, 149, 149, 275, 338, 249,
+ 249, 249, 249, 249, 726, 282, 726, 795, 344, 282,
+ 266, 282, 339, 343, 149, 149, 149, 149, 149, 149,
+ 152, 152, 152, 152, 152, 152, 152, 152, 152, 152,
+ 249, 344, 794, 282, 152, 152, 152, 152, 152, 152,
+ 270, 752, 784, 752, 270, 270, 270, 270, 957, 783,
+ 287, 351, 249, 249, 287, 282, 287, 152, 152, 152,
+ 152, 152, 152, 165, 165, 165, 165, 165, 165, 165,
+ 165, 165, 165, 754, 351, 292, 417, 165, 165, 165,
+
+ 165, 165, 165, 753, 272, 272, 272, 272, 272, 290,
+ 302, 957, 328, 290, 302, 290, 302, 328, 417, 328,
+ 165, 165, 165, 165, 165, 165, 169, 169, 169, 169,
+ 169, 169, 169, 169, 169, 169, 291, 292, 353, 272,
+ 169, 169, 169, 169, 169, 169, 291, 292, 750, 792,
+ 503, 792, 241, 241, 241, 241, 241, 272, 291, 292,
+ 779, 353, 272, 169, 169, 169, 169, 169, 169, 172,
+ 172, 172, 172, 172, 172, 172, 172, 172, 172, 401,
+ 401, 748, 779, 172, 172, 172, 172, 172, 172, 306,
+ 306, 306, 306, 306, 811, 241, 244, 244, 244, 244,
+
+ 244, 401, 503, 241, 405, 241, 172, 172, 172, 172,
+ 172, 172, 176, 176, 176, 176, 176, 241, 307, 405,
+ 747, 332, 307, 741, 307, 241, 332, 405, 332, 176,
+ 176, 176, 176, 176, 176, 176, 176, 176, 176, 244,
+ 244, 811, 392, 176, 176, 176, 176, 176, 176, 244,
+ 739, 954, 392, 273, 273, 273, 273, 273, 734, 311,
+ 412, 244, 244, 311, 392, 311, 176, 176, 176, 176,
+ 176, 176, 233, 233, 233, 233, 233, 233, 233, 233,
+ 233, 233, 412, 412, 273, 462, 233, 233, 233, 233,
+ 233, 233, 240, 240, 240, 240, 240, 801, 954, 801,
+
+ 505, 271, 271, 271, 271, 271, 273, 273, 462, 233,
+ 233, 233, 233, 233, 233, 235, 526, 533, 235, 235,
+ 235, 235, 235, 235, 235, 325, 732, 240, 463, 325,
+ 235, 325, 235, 728, 727, 240, 468, 243, 243, 243,
+ 243, 243, 315, 468, 271, 240, 315, 315, 315, 315,
+ 240, 463, 505, 235, 271, 235, 237, 240, 468, 237,
+ 237, 237, 237, 237, 237, 237, 271, 724, 526, 533,
+ 403, 237, 478, 237, 245, 245, 245, 245, 245, 403,
+ 243, 246, 246, 246, 246, 246, 402, 337, 705, 243,
+ 243, 337, 403, 337, 237, 478, 237, 239, 239, 239,
+
+ 239, 239, 243, 704, 251, 251, 251, 251, 251, 346,
+ 479, 243, 245, 346, 239, 346, 554, 245, 239, 239,
+ 239, 239, 324, 698, 246, 342, 324, 245, 324, 246,
+ 342, 697, 342, 479, 246, 245, 556, 402, 402, 245,
+ 239, 250, 250, 250, 250, 250, 246, 251, 324, 350,
+ 239, 246, 251, 350, 350, 350, 350, 251, 759, 402,
+ 759, 759, 239, 247, 247, 247, 247, 247, 554, 251,
+ 324, 358, 250, 694, 251, 358, 358, 358, 358, 250,
+ 288, 288, 288, 288, 288, 807, 693, 807, 556, 274,
+ 274, 274, 274, 274, 250, 250, 247, 277, 277, 277,
+
+ 277, 277, 250, 277, 366, 566, 247, 277, 366, 277,
+ 366, 369, 247, 397, 247, 369, 247, 369, 740, 247,
+ 688, 397, 740, 397, 274, 374, 288, 686, 247, 374,
+ 374, 374, 374, 288, 247, 397, 247, 248, 248, 248,
+ 248, 248, 274, 397, 838, 399, 838, 274, 288, 424,
+ 277, 399, 742, 424, 248, 424, 742, 566, 248, 248,
+ 248, 248, 320, 320, 320, 320, 320, 399, 248, 280,
+ 280, 280, 280, 280, 321, 321, 321, 321, 321, 322,
+ 322, 322, 322, 322, 495, 280, 583, 583, 583, 583,
+ 248, 248, 276, 276, 276, 276, 276, 335, 335, 335,
+
+ 335, 335, 336, 336, 336, 336, 336, 495, 280, 276,
+ 276, 276, 276, 276, 276, 276, 276, 276, 276, 682,
+ 681, 423, 280, 276, 276, 276, 276, 276, 276, 423,
+ 678, 280, 289, 289, 289, 289, 289, 340, 340, 340,
+ 340, 340, 427, 423, 676, 675, 276, 276, 276, 276,
+ 276, 276, 278, 278, 278, 278, 278, 278, 278, 278,
+ 278, 278, 656, 492, 427, 427, 278, 278, 278, 278,
+ 278, 278, 341, 341, 341, 341, 341, 655, 289, 492,
+ 331, 331, 331, 331, 331, 289, 492, 630, 629, 278,
+ 278, 278, 278, 278, 278, 355, 355, 355, 355, 355,
+
+ 289, 293, 293, 293, 293, 293, 293, 293, 293, 293,
+ 293, 331, 621, 447, 497, 293, 293, 293, 293, 293,
+ 293, 620, 577, 349, 349, 349, 349, 349, 356, 356,
+ 356, 356, 356, 331, 331, 447, 447, 497, 293, 293,
+ 293, 293, 293, 293, 296, 296, 296, 296, 296, 296,
+ 296, 296, 296, 296, 576, 517, 394, 521, 296, 296,
+ 296, 296, 296, 296, 357, 357, 357, 357, 357, 363,
+ 363, 363, 363, 363, 394, 349, 349, 517, 517, 394,
+ 521, 296, 296, 296, 296, 296, 296, 297, 297, 297,
+ 297, 297, 297, 297, 297, 297, 297, 349, 847, 573,
+
+ 847, 297, 297, 297, 297, 297, 297, 364, 364, 364,
+ 364, 364, 572, 314, 314, 314, 314, 314, 365, 365,
+ 365, 365, 365, 393, 297, 297, 297, 297, 297, 297,
+ 301, 301, 301, 301, 301, 301, 301, 301, 301, 301,
+ 761, 522, 761, 761, 301, 301, 301, 301, 301, 301,
+ 314, 372, 372, 372, 372, 372, 376, 569, 376, 376,
+ 376, 376, 376, 376, 522, 393, 314, 301, 301, 301,
+ 301, 301, 301, 314, 378, 393, 378, 378, 378, 378,
+ 378, 378, 409, 568, 459, 372, 567, 393, 459, 565,
+ 389, 389, 389, 389, 389, 429, 560, 418, 409, 429,
+
+ 409, 429, 409, 418, 372, 409, 459, 558, 372, 373,
+ 373, 373, 373, 373, 373, 373, 373, 373, 373, 418,
+ 409, 389, 409, 373, 373, 373, 373, 373, 373, 380,
+ 380, 380, 380, 380, 867, 568, 867, 555, 381, 381,
+ 381, 381, 381, 389, 389, 553, 373, 373, 373, 373,
+ 373, 373, 375, 549, 547, 375, 375, 375, 375, 375,
+ 375, 375, 900, 420, 380, 528, 900, 375, 420, 375,
+ 420, 395, 380, 400, 382, 382, 382, 382, 382, 411,
+ 398, 381, 380, 411, 411, 411, 411, 380, 528, 381,
+ 375, 381, 375, 377, 380, 541, 377, 377, 377, 377,
+
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+ 840, 840, 1088, 912, 0, 924, 840, 840, 840, 840,
+ 840, 840, 916, 916, 916, 916, 916, 0, 0, 966,
+ 0, 0, 912, 966, 0, 966, 912, 924, 924, 840,
+
+ 840, 840, 840, 840, 840, 841, 841, 841, 841, 841,
+ 841, 841, 841, 841, 841, 0, 966, 916, 0, 841,
+ 841, 841, 841, 841, 841, 0, 915, 915, 915, 915,
+ 915, 0, 1019, 0, 0, 916, 0, 1019, 966, 1019,
+ 916, 0, 841, 841, 841, 841, 841, 841, 842, 842,
+ 842, 842, 842, 842, 842, 842, 842, 842, 0, 0,
+ 0, 0, 842, 842, 842, 842, 842, 842, 0, 915,
+ 917, 917, 917, 917, 917, 0, 0, 974, 941, 915,
+ 918, 918, 918, 918, 918, 842, 842, 842, 842, 842,
+ 842, 915, 919, 919, 919, 919, 919, 920, 920, 920,
+
+ 920, 920, 0, 0, 921, 921, 921, 921, 921, 1046,
+ 0, 0, 0, 917, 0, 0, 922, 922, 922, 922,
+ 922, 917, 1042, 917, 941, 974, 1042, 918, 1042, 974,
+ 941, 1044, 0, 918, 0, 917, 1044, 0, 1044, 1046,
+ 0, 920, 921, 917, 919, 919, 941, 974, 0, 918,
+ 920, 925, 925, 925, 925, 925, 0, 921, 0, 922,
+ 0, 1046, 1046, 920, 922, 921, 919, 0, 0, 922,
+ 926, 926, 926, 926, 926, 0, 927, 927, 927, 927,
+ 927, 922, 1076, 0, 0, 0, 922, 923, 923, 923,
+ 923, 923, 0, 0, 0, 928, 928, 928, 928, 928,
+
+ 1056, 0, 0, 0, 925, 1056, 0, 1056, 926, 929,
+ 929, 929, 929, 929, 931, 931, 931, 931, 931, 927,
+ 923, 1067, 0, 926, 927, 1076, 1067, 0, 1067, 927,
+ 0, 926, 928, 1071, 1076, 0, 923, 1071, 923, 1071,
+ 923, 927, 0, 923, 0, 0, 927, 1076, 928, 930,
+ 930, 930, 930, 930, 0, 928, 0, 1074, 923, 1085,
+ 923, 1074, 929, 1074, 1085, 0, 1085, 931, 938, 938,
+ 938, 938, 938, 961, 961, 961, 961, 961, 963, 963,
+ 963, 963, 963, 930, 0, 961, 0, 0, 0, 0,
+ 963, 1051, 1051, 1051, 1051, 1051, 0, 971, 971, 971,
+
+ 971, 971, 930, 0, 0, 0, 930, 976, 976, 976,
+ 976, 976, 977, 977, 977, 977, 977, 938, 1087, 0,
+ 1037, 938, 1087, 1021, 1087, 1037, 961, 1037, 971, 0,
+ 0, 963, 1086, 1086, 1086, 1086, 1086, 0, 0, 938,
+ 956, 956, 956, 956, 956, 956, 956, 956, 956, 956,
+ 971, 971, 1037, 0, 956, 956, 956, 956, 956, 956,
+ 976, 0, 0, 0, 0, 977, 978, 978, 978, 978,
+ 978, 1021, 0, 0, 1037, 1021, 0, 956, 956, 956,
+ 956, 956, 956, 959, 959, 959, 959, 959, 959, 959,
+ 959, 959, 959, 1021, 0, 0, 0, 959, 959, 959,
+
+ 959, 959, 959, 983, 983, 983, 983, 983, 984, 984,
+ 984, 984, 984, 1094, 1094, 1094, 1094, 1094, 0, 978,
+ 959, 959, 959, 959, 959, 959, 960, 960, 960, 960,
+ 960, 960, 960, 960, 960, 960, 0, 0, 0, 0,
+ 960, 960, 960, 960, 960, 960, 1095, 0, 0, 0,
+ 0, 1095, 0, 1095, 0, 0, 983, 0, 0, 0,
+ 0, 984, 0, 960, 960, 960, 960, 960, 960, 962,
+ 962, 962, 962, 962, 962, 962, 962, 962, 962, 962,
+ 962, 962, 962, 962, 962, 962, 962, 962, 962, 962,
+ 962, 962, 962, 962, 962, 962, 962, 962, 962, 962,
+
+ 962, 962, 962, 962, 962, 962, 962, 962, 962, 962,
+ 962, 962, 962, 962, 962, 962, 962, 962, 962, 962,
+ 962, 962, 962, 962, 962, 962, 962, 962, 962, 962,
+ 962, 962, 962, 962, 962, 962, 962, 962, 962, 962,
+ 962, 962, 962, 962, 962, 962, 962, 962, 964, 964,
+ 964, 964, 964, 964, 964, 964, 964, 964, 0, 0,
+ 0, 0, 964, 964, 964, 964, 964, 964, 982, 982,
+ 982, 982, 982, 985, 985, 985, 985, 985, 992, 992,
+ 992, 992, 992, 0, 0, 964, 964, 964, 964, 964,
+ 964, 993, 993, 993, 993, 993, 994, 994, 994, 994,
+
+ 994, 0, 0, 0, 0, 982, 995, 995, 995, 995,
+ 995, 0, 992, 996, 996, 996, 996, 996, 0, 0,
+ 0, 982, 993, 0, 0, 0, 985, 0, 982, 0,
+ 994, 992, 0, 0, 0, 992, 997, 997, 997, 997,
+ 997, 0, 0, 0, 993, 993, 0, 0, 0, 994,
+ 0, 0, 0, 994, 998, 998, 998, 998, 998, 995,
+ 999, 999, 999, 999, 999, 0, 996, 1004, 1004, 1004,
+ 1004, 1004, 1005, 1005, 1005, 1005, 1005, 1006, 1006, 1006,
+ 1006, 1006, 1007, 1007, 1007, 1007, 1007, 0, 1089, 997,
+ 1008, 1008, 1008, 1008, 1008, 1009, 1009, 1009, 1009, 1009,
+
+ 1010, 1010, 1010, 1010, 1010, 0, 0, 998, 1014, 1014,
+ 1014, 1014, 1014, 999, 1015, 1015, 1015, 1015, 1015, 1004,
+ 1004, 0, 0, 0, 0, 1005, 0, 0, 0, 0,
+ 1006, 0, 0, 0, 0, 1007, 1089, 0, 0, 0,
+ 1089, 1004, 1014, 1008, 0, 0, 0, 0, 1009, 0,
+ 0, 0, 0, 1010, 0, 0, 0, 0, 1089, 0,
+ 0, 1014, 0, 0, 0, 1014, 0, 1015, 1028, 1028,
+ 1028, 1028, 1028, 1028, 1028, 1028, 1028, 1028, 0, 0,
+ 0, 0, 1028, 1028, 1028, 1028, 1028, 1028, 1031, 1031,
+ 1031, 1031, 1031, 1048, 1048, 1048, 1048, 1048, 0, 0,
+
+ 1031, 0, 0, 0, 0, 1028, 1028, 1028, 1028, 1028,
+ 1028, 1029, 1029, 1029, 1029, 1029, 1029, 1029, 1029, 1029,
+ 1029, 0, 0, 0, 0, 1029, 1029, 1029, 1029, 1029,
+ 1029, 1032, 1032, 1032, 1032, 1032, 1043, 1043, 1043, 1043,
+ 1043, 1031, 0, 1032, 0, 0, 1048, 0, 1029, 1029,
+ 1029, 1029, 1029, 1029, 1030, 1030, 1030, 1030, 1030, 1030,
+ 1030, 1030, 1030, 1030, 0, 0, 0, 0, 1030, 1030,
+ 1030, 1030, 1030, 1030, 1053, 1053, 1053, 1053, 1053, 0,
+ 1043, 0, 0, 0, 1032, 0, 0, 0, 0, 1043,
+ 0, 1030, 1030, 1030, 1030, 1030, 1030, 1033, 1033, 1033,
+
+ 1033, 1033, 1043, 0, 0, 0, 0, 0, 0, 1033,
+ 0, 0, 0, 0, 1033, 1033, 1033, 1033, 1033, 1033,
+ 1033, 1033, 1033, 1033, 0, 0, 0, 1053, 1033, 1033,
+ 1033, 1033, 1033, 1033, 1052, 1052, 1052, 1052, 1052, 1054,
+ 1054, 1054, 1054, 1054, 0, 0, 0, 0, 0, 0,
+ 1033, 1033, 1033, 1033, 1033, 1033, 1033, 1035, 1035, 1035,
+ 1035, 1035, 1035, 1035, 1035, 1035, 1035, 0, 1052, 0,
+ 0, 1035, 1035, 1035, 1035, 1035, 1035, 1055, 1055, 1055,
+ 1055, 1055, 0, 0, 0, 0, 0, 1052, 0, 0,
+ 0, 1052, 1054, 0, 1035, 1035, 1035, 1035, 1035, 1035,
+
+ 1064, 1064, 1064, 1064, 1064, 0, 0, 0, 0, 0,
+ 0, 0, 1064, 1072, 1072, 1072, 1072, 1072, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 1055, 1061, 1061, 1061, 1061, 1061, 1061, 1061, 1061, 1061,
+ 1061, 0, 0, 0, 0, 1061, 1061, 1061, 1061, 1061,
+ 1061, 0, 0, 1064, 0, 0, 1073, 1073, 1073, 1073,
+ 1073, 0, 1072, 0, 0, 0, 1072, 0, 1061, 1061,
+ 1061, 1061, 1061, 1061, 1062, 1062, 1062, 1062, 1062, 1062,
+ 1062, 1062, 1062, 1062, 1072, 0, 0, 0, 1062, 1062,
+ 1062, 1062, 1062, 1062, 1078, 1078, 1078, 1078, 1078, 0,
+
+ 0, 0, 0, 0, 0, 1073, 0, 0, 0, 1073,
+ 0, 1062, 1062, 1062, 1062, 1062, 1062, 1063, 1063, 1063,
+ 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1073, 0, 0,
+ 0, 1063, 1063, 1063, 1063, 1063, 1063, 1101, 1101, 1101,
+ 1101, 1101, 0, 0, 0, 0, 0, 1078, 0, 1101,
+ 0, 0, 0, 0, 1063, 1063, 1063, 1063, 1063, 1063,
+ 1065, 1065, 1065, 1065, 1065, 1065, 1065, 1065, 1065, 1065,
+ 0, 0, 0, 0, 1065, 1065, 1065, 1065, 1065, 1065,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 1101, 0, 0, 0, 0, 0, 0, 1065, 1065, 1065,
+
+ 1065, 1065, 1065, 1066, 1066, 1066, 1066, 1066, 1066, 1066,
+ 1066, 1066, 1066, 0, 0, 0, 0, 1066, 1066, 1066,
+ 1066, 1066, 1066, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 1066, 1066, 1066, 1066, 1066, 1066, 1080, 1080, 1080, 1080,
+ 1080, 1080, 1080, 1080, 1080, 1080, 0, 0, 0, 0,
+ 1080, 1080, 1080, 1080, 1080, 1080, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 1080, 1080, 1080, 1080, 1080, 1080, 1081,
+ 1081, 1081, 1081, 1081, 1081, 1081, 1081, 1081, 1081, 0,
+
+ 0, 0, 0, 1081, 1081, 1081, 1081, 1081, 1081, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 1081, 1081, 1081, 1081,
+ 1081, 1081, 1082, 1082, 1082, 1082, 1082, 1082, 1082, 1082,
+ 1082, 1082, 0, 0, 0, 0, 1082, 1082, 1082, 1082,
+ 1082, 1082, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 1082,
+ 1082, 1082, 1082, 1082, 1082, 1083, 1083, 1083, 1083, 1083,
+ 1083, 1083, 1083, 1083, 1083, 0, 0, 0, 0, 1083,
+ 1083, 1083, 1083, 1083, 1083, 0, 0, 0, 0, 0,
+
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 1083, 1083, 1083, 1083, 1083, 1083, 1084, 1084,
+ 1084, 1084, 1084, 1084, 1084, 1084, 1084, 1084, 0, 0,
+ 0, 0, 1084, 1084, 1084, 1084, 1084, 1084, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 1084, 1084, 1084, 1084, 1084,
+ 1084, 1091, 1091, 1091, 1091, 1091, 1091, 1091, 1091, 1091,
+ 1091, 0, 0, 0, 0, 1091, 1091, 1091, 1091, 1091,
+ 1091, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 1091, 1091,
+
+ 1091, 1091, 1091, 1091, 1092, 1092, 1092, 1092, 1092, 1092,
+ 1092, 1092, 1092, 1092, 0, 0, 0, 0, 1092, 1092,
+ 1092, 1092, 1092, 1092, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 1092, 1092, 1092, 1092, 1092, 1092, 1093, 1093, 1093,
+ 1093, 1093, 1093, 1093, 1093, 1093, 1093, 0, 0, 0,
+ 0, 1093, 1093, 1093, 1093, 1093, 1093, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 1093, 1093, 1093, 1093, 1093, 1093,
+ 1099, 1099, 1099, 1099, 1099, 1099, 1099, 1099, 1099, 1099,
+
+ 0, 0, 0, 0, 1099, 1099, 1099, 1099, 1099, 1099,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 1099, 1099, 1099,
+ 1099, 1099, 1099, 1103, 1103, 0, 1103, 1103, 1103, 1103,
+ 1103, 1103, 1104, 1104, 1104, 1104, 1105, 1105, 0, 1105,
+ 1105, 1105, 1105, 1105, 1105, 1106, 0, 0, 1106, 1107,
+ 1107, 0, 1107, 1107, 1108, 1108, 0, 1108, 1108, 1108,
+ 1108, 1108, 1108, 1109, 1109, 1109, 1109, 1109, 1109, 1109,
+ 1109, 1109, 1110, 1110, 0, 1110, 1110, 1110, 1110, 1110,
+ 1110, 1111, 1111, 1111, 1111, 1111, 1111, 1111, 1111, 1111,
+
+ 1112, 1112, 1112, 1112, 1112, 1112, 1112, 1112, 1112, 1114,
+ 0, 1114, 1114, 1115, 1115, 0, 1115, 1115, 1115, 1115,
+ 1115, 1115, 1116, 1116, 1116, 1116, 1116, 1116, 1116, 1116,
+ 1116, 1117, 1117, 1117, 1117, 1117, 1117, 1117, 1117, 1117,
+ 1118, 1118, 1118, 1118, 1118, 1118, 1118, 1118, 1118, 1119,
+ 1119, 0, 1119, 1119, 1119, 1119, 1119, 1119, 1120, 1120,
+ 1120, 1120, 1120, 1120, 1120, 1120, 1120, 1121, 1121, 1121,
+ 1121, 1121, 1121, 1121, 1121, 1121, 1122, 1122, 1122, 1122,
+ 1122, 1122, 1122, 1122, 1122, 1123, 1123, 1123, 0, 1123,
+ 1123, 1123, 1123, 1124, 1124, 1124, 1124, 1124, 1124, 1124,
+
+ 1124, 1124, 1125, 1125, 1125, 1125, 1125, 1125, 1125, 1125,
+ 1125, 1126, 1126, 1126, 1126, 1126, 1126, 1126, 1126, 1126,
+ 1127, 1127, 0, 1127, 1127, 1127, 1127, 1127, 1127, 1128,
+ 1128, 0, 1128, 1128, 1128, 1128, 1128, 1128, 1129, 1129,
+ 1129, 1129, 1129, 1129, 1129, 1129, 1129, 1130, 1130, 1130,
+ 1130, 1130, 1130, 1130, 1130, 1130, 1131, 1131, 1131, 1131,
+ 1131, 1131, 1131, 1131, 1131, 1132, 1132, 1132, 1132, 1132,
+ 1132, 1132, 1132, 1132, 1133, 1133, 1133, 1133, 1133, 1133,
+ 1133, 1133, 1133, 1134, 1134, 1134, 1134, 1134, 1134, 1134,
+ 1134, 1134, 1135, 1135, 1135, 1135, 1135, 1135, 1135, 1135,
+
+ 1135, 1136, 1136, 0, 0, 1136, 1136, 1136, 1136, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102,
+ 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102, 1102
+ } ;
+
+static yy_state_type yy_last_accepting_state;
+static char *yy_last_accepting_cpos;
+
+extern int yy_flex_debug;
+int yy_flex_debug = 0;
+
+/* The intent behind this definition is that it'll catch
+ * any uses of REJECT which flex missed.
+ */
+#define REJECT reject_used_but_not_detected
+#define yymore() yymore_used_but_not_detected
+#define YY_MORE_ADJ 0
+#define YY_RESTORE_YY_MORE_OFFSET
+char *yytext;
+#line 1 "css.l"
+
+#line 13 "css.l"
+/* Lex source for CSS tokenizing.
+ Taken from http://www.w3.org/TR/CSS21/grammar.html#q2
+ Copyright (C) 2006, 2009-2011, 2015, 2018-2020 Free Software
+ Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at
+your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#define YY_NO_INPUT
+
+#include "css-tokens.h"
+
+#if defined __clang__ || __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
+ #pragma GCC diagnostic ignored "-Wunknown-pragmas" // clang mourns about the next one
+ #pragma GCC diagnostic ignored "-Wunused-function"
+ #pragma GCC diagnostic ignored "-Wunused-macros"
+ #pragma GCC diagnostic ignored "-Wunused-parameter"
+ #pragma GCC diagnostic ignored "-Wsign-compare"
+ #pragma GCC diagnostic ignored "-Wswitch-default"
+ #pragma GCC diagnostic ignored "-Wunreachable-code" // clang
+ #pragma clang diagnostic ignored "-Wshorten-64-to-32"
+ #ifndef __clang__
+ #pragma GCC diagnostic ignored "-Wsuggest-attribute=pure"
+ #endif
+#endif
+
+#line 2452 "css.c"
+#line 2453 "css.c"
+
+#define INITIAL 0
+
+#ifndef YY_NO_UNISTD_H
+/* Special case for "unistd.h", since it is non-ANSI. We include it way
+ * down here because we want the user's section 1 to have been scanned first.
+ * The user has a chance to override it with an option.
+ */
+#include <unistd.h>
+#endif
+
+#ifndef YY_EXTRA_TYPE
+#define YY_EXTRA_TYPE void *
+#endif
+
+static int yy_init_globals ( void );
+
+/* Accessor methods to globals.
+ These are made visible to non-reentrant scanners for convenience. */
+
+int yylex_destroy ( void );
+
+int yyget_debug ( void );
+
+void yyset_debug ( int debug_flag );
+
+YY_EXTRA_TYPE yyget_extra ( void );
+
+void yyset_extra ( YY_EXTRA_TYPE user_defined );
+
+FILE *yyget_in ( void );
+
+void yyset_in ( FILE * _in_str );
+
+FILE *yyget_out ( void );
+
+void yyset_out ( FILE * _out_str );
+
+ int yyget_leng ( void );
+
+char *yyget_text ( void );
+
+int yyget_lineno ( void );
+
+void yyset_lineno ( int _line_number );
+
+/* Macros after this point can all be overridden by user definitions in
+ * section 1.
+ */
+
+#ifndef YY_SKIP_YYWRAP
+#ifdef __cplusplus
+extern "C" int yywrap ( void );
+#else
+extern int yywrap ( void );
+#endif
+#endif
+
+#ifndef YY_NO_UNPUT
+
+#endif
+
+#ifndef yytext_ptr
+static void yy_flex_strncpy ( char *, const char *, int );
+#endif
+
+#ifdef YY_NEED_STRLEN
+static int yy_flex_strlen ( const char * );
+#endif
+
+#ifndef YY_NO_INPUT
+#ifdef __cplusplus
+static int yyinput ( void );
+#else
+static int input ( void );
+#endif
+
+#endif
+
+/* Amount of stuff to slurp up with each read. */
+#ifndef YY_READ_BUF_SIZE
+#ifdef __ia64__
+/* On IA-64, the buffer size is 16k, not 8k */
+#define YY_READ_BUF_SIZE 16384
+#else
+#define YY_READ_BUF_SIZE 8192
+#endif /* __ia64__ */
+#endif
+
+/* Copy whatever the last rule matched to the standard output. */
+#ifndef ECHO
+/* This used to be an fputs(), but since the string might contain NUL's,
+ * we now use fwrite().
+ */
+#define ECHO do { if (fwrite( yytext, (size_t) yyleng, 1, yyout )) {} } while (0)
+#endif
+
+/* Gets input and stuffs it into "buf". number of characters read, or YY_NULL,
+ * is returned in "result".
+ */
+#ifndef YY_INPUT
+#define YY_INPUT(buf,result,max_size) \
+ if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \
+ { \
+ int c = '*'; \
+ int n; \
+ for ( n = 0; n < max_size && \
+ (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
+ buf[n] = (char) c; \
+ if ( c == '\n' ) \
+ buf[n++] = (char) c; \
+ if ( c == EOF && ferror( yyin ) ) \
+ YY_FATAL_ERROR( "input in flex scanner failed" ); \
+ result = n; \
+ } \
+ else \
+ { \
+ errno=0; \
+ while ( (result = (int) fread(buf, 1, (yy_size_t) max_size, yyin)) == 0 && ferror(yyin)) \
+ { \
+ if( errno != EINTR) \
+ { \
+ YY_FATAL_ERROR( "input in flex scanner failed" ); \
+ break; \
+ } \
+ errno=0; \
+ clearerr(yyin); \
+ } \
+ }\
+\
+
+#endif
+
+/* No semi-colon after return; correct usage is to write "yyterminate();" -
+ * we don't want an extra ';' after the "return" because that will cause
+ * some compilers to complain about unreachable statements.
+ */
+#ifndef yyterminate
+#define yyterminate() return YY_NULL
+#endif
+
+/* Number of entries by which start-condition stack grows. */
+#ifndef YY_START_STACK_INCR
+#define YY_START_STACK_INCR 25
+#endif
+
+/* Report a fatal error. */
+#ifndef YY_FATAL_ERROR
+#define YY_FATAL_ERROR(msg) yy_fatal_error( msg )
+#endif
+
+/* end tables serialization structures and prototypes */
+
+/* Default declaration of generated scanner - a define so the user can
+ * easily add parameters.
+ */
+#ifndef YY_DECL
+#define YY_DECL_IS_OURS 1
+
+extern int yylex (void);
+
+#define YY_DECL int yylex (void)
+#endif /* !YY_DECL */
+
+/* Code executed at the beginning of each rule, after yytext and yyleng
+ * have been set up.
+ */
+#ifndef YY_USER_ACTION
+#define YY_USER_ACTION
+#endif
+
+/* Code executed at the end of each rule. */
+#ifndef YY_BREAK
+#define YY_BREAK /*LINTED*/break;
+#endif
+
+#define YY_RULE_SETUP \
+ YY_USER_ACTION
+
+/** The main scanner function which does all the work.
+ */
+YY_DECL
+{
+ yy_state_type yy_current_state;
+ char *yy_cp, *yy_bp;
+ int yy_act;
+
+ if ( !(yy_init) )
+ {
+ (yy_init) = 1;
+
+#ifdef YY_USER_INIT
+ YY_USER_INIT;
+#endif
+
+ if ( ! (yy_start) )
+ (yy_start) = 1; /* first start state */
+
+ if ( ! yyin )
+ yyin = stdin;
+
+ if ( ! yyout )
+ yyout = stdout;
+
+ if ( ! YY_CURRENT_BUFFER ) {
+ yyensure_buffer_stack ();
+ YY_CURRENT_BUFFER_LVALUE =
+ yy_create_buffer( yyin, YY_BUF_SIZE );
+ }
+
+ yy_load_buffer_state( );
+ }
+
+ {
+#line 112 "css.l"
+
+
+#line 2671 "css.c"
+
+ while ( /*CONSTCOND*/1 ) /* loops until end-of-file is reached */
+ {
+ yy_cp = (yy_c_buf_p);
+
+ /* Support of yytext. */
+ *yy_cp = (yy_hold_char);
+
+ /* yy_bp points to the position in yy_ch_buf of the start of
+ * the current run.
+ */
+ yy_bp = yy_cp;
+
+ yy_current_state = (yy_start);
+yy_match:
+ do
+ {
+ YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)] ;
+ if ( yy_accept[yy_current_state] )
+ {
+ (yy_last_accepting_state) = yy_current_state;
+ (yy_last_accepting_cpos) = yy_cp;
+ }
+ while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+ {
+ yy_current_state = (int) yy_def[yy_current_state];
+ if ( yy_current_state >= 1103 )
+ yy_c = yy_meta[yy_c];
+ }
+ yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
+ ++yy_cp;
+ }
+ while ( yy_current_state != 1102 );
+ yy_cp = (yy_last_accepting_cpos);
+ yy_current_state = (yy_last_accepting_state);
+
+yy_find_action:
+ yy_act = yy_accept[yy_current_state];
+
+ YY_DO_BEFORE_ACTION;
+
+do_action: /* This label is used only to access EOF actions. */
+
+ switch ( yy_act )
+ { /* beginning of action switch */
+ case 0: /* must back up */
+ /* undo the effects of YY_DO_BEFORE_ACTION */
+ *yy_cp = (yy_hold_char);
+ yy_cp = (yy_last_accepting_cpos);
+ yy_current_state = (yy_last_accepting_state);
+ goto yy_find_action;
+
+case 1:
+/* rule 1 can match eol */
+YY_RULE_SETUP
+#line 114 "css.l"
+{return S;}
+ YY_BREAK
+case 2:
+/* rule 2 can match eol */
+YY_RULE_SETUP
+#line 116 "css.l"
+{return COMMENT;}
+ YY_BREAK
+case 3:
+/* rule 3 can match eol */
+YY_RULE_SETUP
+#line 117 "css.l"
+/* ignore comments */
+ YY_BREAK
+case 4:
+/* rule 4 can match eol */
+YY_RULE_SETUP
+#line 118 "css.l"
+/* unclosed comment at EOF */
+ YY_BREAK
+case 5:
+YY_RULE_SETUP
+#line 120 "css.l"
+{return CDO;}
+ YY_BREAK
+case 6:
+YY_RULE_SETUP
+#line 121 "css.l"
+{return CDC;}
+ YY_BREAK
+case 7:
+YY_RULE_SETUP
+#line 122 "css.l"
+{return INCLUDES;}
+ YY_BREAK
+case 8:
+YY_RULE_SETUP
+#line 123 "css.l"
+{return DASHMATCH;}
+ YY_BREAK
+case 9:
+/* rule 9 can match eol */
+YY_RULE_SETUP
+#line 125 "css.l"
+{return STRING;}
+ YY_BREAK
+case 10:
+/* rule 10 can match eol */
+YY_RULE_SETUP
+#line 126 "css.l"
+{return BAD_STRING;}
+ YY_BREAK
+case 11:
+/* rule 11 can match eol */
+YY_RULE_SETUP
+#line 128 "css.l"
+{return IDENT;}
+ YY_BREAK
+case 12:
+/* rule 12 can match eol */
+YY_RULE_SETUP
+#line 130 "css.l"
+{return HASH;}
+ YY_BREAK
+case 13:
+/* rule 13 can match eol */
+YY_RULE_SETUP
+#line 132 "css.l"
+{return IMPORT_SYM;}
+ YY_BREAK
+case 14:
+/* rule 14 can match eol */
+YY_RULE_SETUP
+#line 133 "css.l"
+{return PAGE_SYM;}
+ YY_BREAK
+case 15:
+/* rule 15 can match eol */
+YY_RULE_SETUP
+#line 134 "css.l"
+{return MEDIA_SYM;}
+ YY_BREAK
+case 16:
+YY_RULE_SETUP
+#line 135 "css.l"
+{return CHARSET_SYM;}
+ YY_BREAK
+case 17:
+/* rule 17 can match eol */
+YY_RULE_SETUP
+#line 137 "css.l"
+{return IMPORTANT_SYM;}
+ YY_BREAK
+case 18:
+/* rule 18 can match eol */
+YY_RULE_SETUP
+#line 139 "css.l"
+{return EMS;}
+ YY_BREAK
+case 19:
+/* rule 19 can match eol */
+YY_RULE_SETUP
+#line 140 "css.l"
+{return EXS;}
+ YY_BREAK
+case 20:
+/* rule 20 can match eol */
+YY_RULE_SETUP
+#line 141 "css.l"
+{return LENGTH;}
+ YY_BREAK
+case 21:
+/* rule 21 can match eol */
+YY_RULE_SETUP
+#line 142 "css.l"
+{return LENGTH;}
+ YY_BREAK
+case 22:
+/* rule 22 can match eol */
+YY_RULE_SETUP
+#line 143 "css.l"
+{return LENGTH;}
+ YY_BREAK
+case 23:
+/* rule 23 can match eol */
+YY_RULE_SETUP
+#line 144 "css.l"
+{return LENGTH;}
+ YY_BREAK
+case 24:
+/* rule 24 can match eol */
+YY_RULE_SETUP
+#line 145 "css.l"
+{return LENGTH;}
+ YY_BREAK
+case 25:
+/* rule 25 can match eol */
+YY_RULE_SETUP
+#line 146 "css.l"
+{return LENGTH;}
+ YY_BREAK
+case 26:
+/* rule 26 can match eol */
+YY_RULE_SETUP
+#line 147 "css.l"
+{return ANGLE;}
+ YY_BREAK
+case 27:
+/* rule 27 can match eol */
+YY_RULE_SETUP
+#line 148 "css.l"
+{return ANGLE;}
+ YY_BREAK
+case 28:
+/* rule 28 can match eol */
+YY_RULE_SETUP
+#line 149 "css.l"
+{return ANGLE;}
+ YY_BREAK
+case 29:
+/* rule 29 can match eol */
+YY_RULE_SETUP
+#line 150 "css.l"
+{return TIME;}
+ YY_BREAK
+case 30:
+/* rule 30 can match eol */
+YY_RULE_SETUP
+#line 151 "css.l"
+{return TIME;}
+ YY_BREAK
+case 31:
+/* rule 31 can match eol */
+YY_RULE_SETUP
+#line 152 "css.l"
+{return FREQ;}
+ YY_BREAK
+case 32:
+/* rule 32 can match eol */
+YY_RULE_SETUP
+#line 153 "css.l"
+{return FREQ;}
+ YY_BREAK
+case 33:
+/* rule 33 can match eol */
+YY_RULE_SETUP
+#line 154 "css.l"
+{return DIMENSION;}
+ YY_BREAK
+case 34:
+YY_RULE_SETUP
+#line 156 "css.l"
+{return PERCENTAGE;}
+ YY_BREAK
+case 35:
+YY_RULE_SETUP
+#line 157 "css.l"
+{return NUMBER;}
+ YY_BREAK
+case 36:
+/* rule 36 can match eol */
+YY_RULE_SETUP
+#line 159 "css.l"
+{return URI;}
+ YY_BREAK
+case 37:
+/* rule 37 can match eol */
+YY_RULE_SETUP
+#line 160 "css.l"
+{return URI;}
+ YY_BREAK
+case 38:
+/* rule 38 can match eol */
+YY_RULE_SETUP
+#line 161 "css.l"
+{return BAD_URI;}
+ YY_BREAK
+case 39:
+/* rule 39 can match eol */
+YY_RULE_SETUP
+#line 163 "css.l"
+{return FUNCTION;}
+ YY_BREAK
+case 40:
+YY_RULE_SETUP
+#line 165 "css.l"
+{return *yytext;}
+ YY_BREAK
+case 41:
+YY_RULE_SETUP
+#line 167 "css.l"
+ECHO;
+ YY_BREAK
+#line 2961 "css.c"
+case YY_STATE_EOF(INITIAL):
+ yyterminate();
+
+ case YY_END_OF_BUFFER:
+ {
+ /* Amount of text matched not including the EOB char. */
+ int yy_amount_of_matched_text = (int) (yy_cp - (yytext_ptr)) - 1;
+
+ /* Undo the effects of YY_DO_BEFORE_ACTION. */
+ *yy_cp = (yy_hold_char);
+ YY_RESTORE_YY_MORE_OFFSET
+
+ if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_NEW )
+ {
+ /* We're scanning a new file or input source. It's
+ * possible that this happened because the user
+ * just pointed yyin at a new source and called
+ * yylex(). If so, then we have to assure
+ * consistency between YY_CURRENT_BUFFER and our
+ * globals. Here is the right place to do so, because
+ * this is the first action (other than possibly a
+ * back-up) that will match for the new input source.
+ */
+ (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
+ YY_CURRENT_BUFFER_LVALUE->yy_input_file = yyin;
+ YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = YY_BUFFER_NORMAL;
+ }
+
+ /* Note that here we test for yy_c_buf_p "<=" to the position
+ * of the first EOB in the buffer, since yy_c_buf_p will
+ * already have been incremented past the NUL character
+ * (since all states make transitions on EOB to the
+ * end-of-buffer state). Contrast this with the test
+ * in input().
+ */
+ if ( (yy_c_buf_p) <= &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] )
+ { /* This was really a NUL. */
+ yy_state_type yy_next_state;
+
+ (yy_c_buf_p) = (yytext_ptr) + yy_amount_of_matched_text;
+
+ yy_current_state = yy_get_previous_state( );
+
+ /* Okay, we're now positioned to make the NUL
+ * transition. We couldn't have
+ * yy_get_previous_state() go ahead and do it
+ * for us because it doesn't know how to deal
+ * with the possibility of jamming (and we don't
+ * want to build jamming into it because then it
+ * will run more slowly).
+ */
+
+ yy_next_state = yy_try_NUL_trans( yy_current_state );
+
+ yy_bp = (yytext_ptr) + YY_MORE_ADJ;
+
+ if ( yy_next_state )
+ {
+ /* Consume the NUL. */
+ yy_cp = ++(yy_c_buf_p);
+ yy_current_state = yy_next_state;
+ goto yy_match;
+ }
+
+ else
+ {
+ yy_cp = (yy_last_accepting_cpos);
+ yy_current_state = (yy_last_accepting_state);
+ goto yy_find_action;
+ }
+ }
+
+ else switch ( yy_get_next_buffer( ) )
+ {
+ case EOB_ACT_END_OF_FILE:
+ {
+ (yy_did_buffer_switch_on_eof) = 0;
+
+ if ( yywrap( ) )
+ {
+ /* Note: because we've taken care in
+ * yy_get_next_buffer() to have set up
+ * yytext, we can now set up
+ * yy_c_buf_p so that if some total
+ * hoser (like flex itself) wants to
+ * call the scanner after we return the
+ * YY_NULL, it'll still work - another
+ * YY_NULL will get returned.
+ */
+ (yy_c_buf_p) = (yytext_ptr) + YY_MORE_ADJ;
+
+ yy_act = YY_STATE_EOF(YY_START);
+ goto do_action;
+ }
+
+ else
+ {
+ if ( ! (yy_did_buffer_switch_on_eof) )
+ YY_NEW_FILE;
+ }
+ break;
+ }
+
+ case EOB_ACT_CONTINUE_SCAN:
+ (yy_c_buf_p) =
+ (yytext_ptr) + yy_amount_of_matched_text;
+
+ yy_current_state = yy_get_previous_state( );
+
+ yy_cp = (yy_c_buf_p);
+ yy_bp = (yytext_ptr) + YY_MORE_ADJ;
+ goto yy_match;
+
+ case EOB_ACT_LAST_MATCH:
+ (yy_c_buf_p) =
+ &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)];
+
+ yy_current_state = yy_get_previous_state( );
+
+ yy_cp = (yy_c_buf_p);
+ yy_bp = (yytext_ptr) + YY_MORE_ADJ;
+ goto yy_find_action;
+ }
+ break;
+ }
+
+ default:
+ YY_FATAL_ERROR(
+ "fatal flex scanner internal error--no action found" );
+ } /* end of action switch */
+ } /* end of scanning one token */
+ } /* end of user's declarations */
+} /* end of yylex */
+
+/* yy_get_next_buffer - try to read in a new buffer
+ *
+ * Returns a code representing an action:
+ * EOB_ACT_LAST_MATCH -
+ * EOB_ACT_CONTINUE_SCAN - continue scanning from current position
+ * EOB_ACT_END_OF_FILE - end of file
+ */
+static int yy_get_next_buffer (void)
+{
+ char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
+ char *source = (yytext_ptr);
+ int number_to_move, i;
+ int ret_val;
+
+ if ( (yy_c_buf_p) > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] )
+ YY_FATAL_ERROR(
+ "fatal flex scanner internal error--end of buffer missed" );
+
+ if ( YY_CURRENT_BUFFER_LVALUE->yy_fill_buffer == 0 )
+ { /* Don't try to fill the buffer, so this is an EOF. */
+ if ( (yy_c_buf_p) - (yytext_ptr) - YY_MORE_ADJ == 1 )
+ {
+ /* We matched a single character, the EOB, so
+ * treat this as a final EOF.
+ */
+ return EOB_ACT_END_OF_FILE;
+ }
+
+ else
+ {
+ /* We matched some text prior to the EOB, first
+ * process it.
+ */
+ return EOB_ACT_LAST_MATCH;
+ }
+ }
+
+ /* Try to read more data. */
+
+ /* First move last chars to start of buffer. */
+ number_to_move = (int) ((yy_c_buf_p) - (yytext_ptr) - 1);
+
+ for ( i = 0; i < number_to_move; ++i )
+ *(dest++) = *(source++);
+
+ if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_EOF_PENDING )
+ /* don't do the read, it's not guaranteed to return an EOF,
+ * just force an EOF
+ */
+ YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars) = 0;
+
+ else
+ {
+ int num_to_read =
+ YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1;
+
+ while ( num_to_read <= 0 )
+ { /* Not enough room in the buffer - grow it. */
+
+ /* just a shorter name for the current buffer */
+ YY_BUFFER_STATE b = YY_CURRENT_BUFFER_LVALUE;
+
+ int yy_c_buf_p_offset =
+ (int) ((yy_c_buf_p) - b->yy_ch_buf);
+
+ if ( b->yy_is_our_buffer )
+ {
+ int new_size = b->yy_buf_size * 2;
+
+ if ( new_size <= 0 )
+ b->yy_buf_size += b->yy_buf_size / 8;
+ else
+ b->yy_buf_size *= 2;
+
+ b->yy_ch_buf = (char *)
+ /* Include room in for 2 EOB chars. */
+ yyrealloc( (void *) b->yy_ch_buf,
+ (yy_size_t) (b->yy_buf_size + 2) );
+ }
+ else
+ /* Can't grow it, we don't own it. */
+ b->yy_ch_buf = NULL;
+
+ if ( ! b->yy_ch_buf )
+ YY_FATAL_ERROR(
+ "fatal error - scanner input buffer overflow" );
+
+ (yy_c_buf_p) = &b->yy_ch_buf[yy_c_buf_p_offset];
+
+ num_to_read = YY_CURRENT_BUFFER_LVALUE->yy_buf_size -
+ number_to_move - 1;
+
+ }
+
+ if ( num_to_read > YY_READ_BUF_SIZE )
+ num_to_read = YY_READ_BUF_SIZE;
+
+ /* Read in more data. */
+ YY_INPUT( (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]),
+ (yy_n_chars), num_to_read );
+
+ YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
+ }
+
+ if ( (yy_n_chars) == 0 )
+ {
+ if ( number_to_move == YY_MORE_ADJ )
+ {
+ ret_val = EOB_ACT_END_OF_FILE;
+ yyrestart( yyin );
+ }
+
+ else
+ {
+ ret_val = EOB_ACT_LAST_MATCH;
+ YY_CURRENT_BUFFER_LVALUE->yy_buffer_status =
+ YY_BUFFER_EOF_PENDING;
+ }
+ }
+
+ else
+ ret_val = EOB_ACT_CONTINUE_SCAN;
+
+ if (((yy_n_chars) + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
+ /* Extend the array by 50%, plus the number we really need. */
+ int new_size = (yy_n_chars) + number_to_move + ((yy_n_chars) >> 1);
+ YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc(
+ (void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf, (yy_size_t) new_size );
+ if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
+ YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" );
+ /* "- 2" to take care of EOB's */
+ YY_CURRENT_BUFFER_LVALUE->yy_buf_size = (int) (new_size - 2);
+ }
+
+ (yy_n_chars) += number_to_move;
+ YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] = YY_END_OF_BUFFER_CHAR;
+ YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] = YY_END_OF_BUFFER_CHAR;
+
+ (yytext_ptr) = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[0];
+
+ return ret_val;
+}
+
+/* yy_get_previous_state - get the state just before the EOB char was reached */
+
+ static yy_state_type yy_get_previous_state (void)
+{
+ yy_state_type yy_current_state;
+ char *yy_cp;
+
+ yy_current_state = (yy_start);
+
+ for ( yy_cp = (yytext_ptr) + YY_MORE_ADJ; yy_cp < (yy_c_buf_p); ++yy_cp )
+ {
+ YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1);
+ if ( yy_accept[yy_current_state] )
+ {
+ (yy_last_accepting_state) = yy_current_state;
+ (yy_last_accepting_cpos) = yy_cp;
+ }
+ while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+ {
+ yy_current_state = (int) yy_def[yy_current_state];
+ if ( yy_current_state >= 1103 )
+ yy_c = yy_meta[yy_c];
+ }
+ yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
+ }
+
+ return yy_current_state;
+}
+
+/* yy_try_NUL_trans - try to make a transition on the NUL character
+ *
+ * synopsis
+ * next_state = yy_try_NUL_trans( current_state );
+ */
+ static yy_state_type yy_try_NUL_trans (yy_state_type yy_current_state )
+{
+ int yy_is_jam;
+ char *yy_cp = (yy_c_buf_p);
+
+ YY_CHAR yy_c = 1;
+ if ( yy_accept[yy_current_state] )
+ {
+ (yy_last_accepting_state) = yy_current_state;
+ (yy_last_accepting_cpos) = yy_cp;
+ }
+ while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+ {
+ yy_current_state = (int) yy_def[yy_current_state];
+ if ( yy_current_state >= 1103 )
+ yy_c = yy_meta[yy_c];
+ }
+ yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
+ yy_is_jam = (yy_current_state == 1102);
+
+ return yy_is_jam ? 0 : yy_current_state;
+}
+
+#ifndef YY_NO_UNPUT
+
+#endif
+
+#ifndef YY_NO_INPUT
+#ifdef __cplusplus
+ static int yyinput (void)
+#else
+ static int input (void)
+#endif
+
+{
+ int c;
+
+ *(yy_c_buf_p) = (yy_hold_char);
+
+ if ( *(yy_c_buf_p) == YY_END_OF_BUFFER_CHAR )
+ {
+ /* yy_c_buf_p now points to the character we want to return.
+ * If this occurs *before* the EOB characters, then it's a
+ * valid NUL; if not, then we've hit the end of the buffer.
+ */
+ if ( (yy_c_buf_p) < &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] )
+ /* This was really a NUL. */
+ *(yy_c_buf_p) = '\0';
+
+ else
+ { /* need more input */
+ int offset = (int) ((yy_c_buf_p) - (yytext_ptr));
+ ++(yy_c_buf_p);
+
+ switch ( yy_get_next_buffer( ) )
+ {
+ case EOB_ACT_LAST_MATCH:
+ /* This happens because yy_g_n_b()
+ * sees that we've accumulated a
+ * token and flags that we need to
+ * try matching the token before
+ * proceeding. But for input(),
+ * there's no matching to consider.
+ * So convert the EOB_ACT_LAST_MATCH
+ * to EOB_ACT_END_OF_FILE.
+ */
+
+ /* Reset buffer status. */
+ yyrestart( yyin );
+
+ /*FALLTHROUGH*/
+
+ case EOB_ACT_END_OF_FILE:
+ {
+ if ( yywrap( ) )
+ return 0;
+
+ if ( ! (yy_did_buffer_switch_on_eof) )
+ YY_NEW_FILE;
+#ifdef __cplusplus
+ return yyinput();
+#else
+ return input();
+#endif
+ }
+
+ case EOB_ACT_CONTINUE_SCAN:
+ (yy_c_buf_p) = (yytext_ptr) + offset;
+ break;
+ }
+ }
+ }
+
+ c = *(unsigned char *) (yy_c_buf_p); /* cast for 8-bit char's */
+ *(yy_c_buf_p) = '\0'; /* preserve yytext */
+ (yy_hold_char) = *++(yy_c_buf_p);
+
+ return c;
+}
+#endif /* ifndef YY_NO_INPUT */
+
+/** Immediately switch to a different input stream.
+ * @param input_file A readable stream.
+ *
+ * @note This function does not reset the start condition to @c INITIAL .
+ */
+ void yyrestart (FILE * input_file )
+{
+
+ if ( ! YY_CURRENT_BUFFER ){
+ yyensure_buffer_stack ();
+ YY_CURRENT_BUFFER_LVALUE =
+ yy_create_buffer( yyin, YY_BUF_SIZE );
+ }
+
+ yy_init_buffer( YY_CURRENT_BUFFER, input_file );
+ yy_load_buffer_state( );
+}
+
+/** Switch to a different input buffer.
+ * @param new_buffer The new input buffer.
+ *
+ */
+ void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer )
+{
+
+ /* TODO. We should be able to replace this entire function body
+ * with
+ * yypop_buffer_state();
+ * yypush_buffer_state(new_buffer);
+ */
+ yyensure_buffer_stack ();
+ if ( YY_CURRENT_BUFFER == new_buffer )
+ return;
+
+ if ( YY_CURRENT_BUFFER )
+ {
+ /* Flush out information for old buffer. */
+ *(yy_c_buf_p) = (yy_hold_char);
+ YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p);
+ YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
+ }
+
+ YY_CURRENT_BUFFER_LVALUE = new_buffer;
+ yy_load_buffer_state( );
+
+ /* We don't actually know whether we did this switch during
+ * EOF (yywrap()) processing, but the only time this flag
+ * is looked at is after yywrap() is called, so it's safe
+ * to go ahead and always set it.
+ */
+ (yy_did_buffer_switch_on_eof) = 1;
+}
+
+static void yy_load_buffer_state (void)
+{
+ (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
+ (yytext_ptr) = (yy_c_buf_p) = YY_CURRENT_BUFFER_LVALUE->yy_buf_pos;
+ yyin = YY_CURRENT_BUFFER_LVALUE->yy_input_file;
+ (yy_hold_char) = *(yy_c_buf_p);
+}
+
+/** Allocate and initialize an input buffer state.
+ * @param file A readable stream.
+ * @param size The character buffer size in bytes. When in doubt, use @c YY_BUF_SIZE.
+ *
+ * @return the allocated buffer state.
+ */
+ YY_BUFFER_STATE yy_create_buffer (FILE * file, int size )
+{
+ YY_BUFFER_STATE b;
+
+ b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) );
+ if ( ! b )
+ YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
+
+ b->yy_buf_size = size;
+
+ /* yy_ch_buf has to be 2 characters longer than the size given because
+ * we need to put in 2 end-of-buffer characters.
+ */
+ b->yy_ch_buf = (char *) yyalloc( (yy_size_t) (b->yy_buf_size + 2) );
+ if ( ! b->yy_ch_buf )
+ YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
+
+ b->yy_is_our_buffer = 1;
+
+ yy_init_buffer( b, file );
+
+ return b;
+}
+
+/** Destroy the buffer.
+ * @param b a buffer created with yy_create_buffer()
+ *
+ */
+ void yy_delete_buffer (YY_BUFFER_STATE b )
+{
+
+ if ( ! b )
+ return;
+
+ if ( b == YY_CURRENT_BUFFER ) /* Not sure if we should pop here. */
+ YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0;
+
+ if ( b->yy_is_our_buffer )
+ yyfree( (void *) b->yy_ch_buf );
+
+ yyfree( (void *) b );
+}
+
+/* Initializes or reinitializes a buffer.
+ * This function is sometimes called more than once on the same buffer,
+ * such as during a yyrestart() or at EOF.
+ */
+ static void yy_init_buffer (YY_BUFFER_STATE b, FILE * file )
+
+{
+ int oerrno = errno;
+
+ yy_flush_buffer( b );
+
+ b->yy_input_file = file;
+ b->yy_fill_buffer = 1;
+
+ /* If b is the current buffer, then yy_init_buffer was _probably_
+ * called from yyrestart() or through yy_get_next_buffer.
+ * In that case, we don't want to reset the lineno or column.
+ */
+ if (b != YY_CURRENT_BUFFER){
+ b->yy_bs_lineno = 1;
+ b->yy_bs_column = 0;
+ }
+
+ b->yy_is_interactive = 0;
+
+ errno = oerrno;
+}
+
+/** Discard all buffered characters. On the next scan, YY_INPUT will be called.
+ * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER.
+ *
+ */
+ void yy_flush_buffer (YY_BUFFER_STATE b )
+{
+ if ( ! b )
+ return;
+
+ b->yy_n_chars = 0;
+
+ /* We always need two end-of-buffer characters. The first causes
+ * a transition to the end-of-buffer state. The second causes
+ * a jam in that state.
+ */
+ b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR;
+ b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR;
+
+ b->yy_buf_pos = &b->yy_ch_buf[0];
+
+ b->yy_at_bol = 1;
+ b->yy_buffer_status = YY_BUFFER_NEW;
+
+ if ( b == YY_CURRENT_BUFFER )
+ yy_load_buffer_state( );
+}
+
+/** Pushes the new state onto the stack. The new state becomes
+ * the current state. This function will allocate the stack
+ * if necessary.
+ * @param new_buffer The new state.
+ *
+ */
+void yypush_buffer_state (YY_BUFFER_STATE new_buffer )
+{
+ if (new_buffer == NULL)
+ return;
+
+ yyensure_buffer_stack();
+
+ /* This block is copied from yy_switch_to_buffer. */
+ if ( YY_CURRENT_BUFFER )
+ {
+ /* Flush out information for old buffer. */
+ *(yy_c_buf_p) = (yy_hold_char);
+ YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p);
+ YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
+ }
+
+ /* Only push if top exists. Otherwise, replace top. */
+ if (YY_CURRENT_BUFFER)
+ (yy_buffer_stack_top)++;
+ YY_CURRENT_BUFFER_LVALUE = new_buffer;
+
+ /* copied from yy_switch_to_buffer. */
+ yy_load_buffer_state( );
+ (yy_did_buffer_switch_on_eof) = 1;
+}
+
+/** Removes and deletes the top of the stack, if present.
+ * The next element becomes the new top.
+ *
+ */
+void yypop_buffer_state (void)
+{
+ if (!YY_CURRENT_BUFFER)
+ return;
+
+ yy_delete_buffer(YY_CURRENT_BUFFER );
+ YY_CURRENT_BUFFER_LVALUE = NULL;
+ if ((yy_buffer_stack_top) > 0)
+ --(yy_buffer_stack_top);
+
+ if (YY_CURRENT_BUFFER) {
+ yy_load_buffer_state( );
+ (yy_did_buffer_switch_on_eof) = 1;
+ }
+}
+
+/* Allocates the stack if it does not exist.
+ * Guarantees space for at least one push.
+ */
+static void yyensure_buffer_stack (void)
+{
+ yy_size_t num_to_alloc;
+
+ if (!(yy_buffer_stack)) {
+
+ /* First allocation is just for 2 elements, since we don't know if this
+ * scanner will even need a stack. We use 2 instead of 1 to avoid an
+ * immediate realloc on the next call.
+ */
+ num_to_alloc = 1; /* After all that talk, this was set to 1 anyways... */
+ (yy_buffer_stack) = (struct yy_buffer_state**)yyalloc
+ (num_to_alloc * sizeof(struct yy_buffer_state*)
+ );
+ if ( ! (yy_buffer_stack) )
+ YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
+
+ memset((yy_buffer_stack), 0, num_to_alloc * sizeof(struct yy_buffer_state*));
+
+ (yy_buffer_stack_max) = num_to_alloc;
+ (yy_buffer_stack_top) = 0;
+ return;
+ }
+
+ if ((yy_buffer_stack_top) >= ((yy_buffer_stack_max)) - 1){
+
+ /* Increase the buffer to prepare for a possible push. */
+ yy_size_t grow_size = 8 /* arbitrary grow size */;
+
+ num_to_alloc = (yy_buffer_stack_max) + grow_size;
+ (yy_buffer_stack) = (struct yy_buffer_state**)yyrealloc
+ ((yy_buffer_stack),
+ num_to_alloc * sizeof(struct yy_buffer_state*)
+ );
+ if ( ! (yy_buffer_stack) )
+ YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
+
+ /* zero only the new slots.*/
+ memset((yy_buffer_stack) + (yy_buffer_stack_max), 0, grow_size * sizeof(struct yy_buffer_state*));
+ (yy_buffer_stack_max) = num_to_alloc;
+ }
+}
+
+/** Setup the input buffer state to scan directly from a user-specified character buffer.
+ * @param base the character buffer
+ * @param size the size in bytes of the character buffer
+ *
+ * @return the newly allocated buffer state object.
+ */
+YY_BUFFER_STATE yy_scan_buffer (char * base, yy_size_t size )
+{
+ YY_BUFFER_STATE b;
+
+ if ( size < 2 ||
+ base[size-2] != YY_END_OF_BUFFER_CHAR ||
+ base[size-1] != YY_END_OF_BUFFER_CHAR )
+ /* They forgot to leave room for the EOB's. */
+ return NULL;
+
+ b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) );
+ if ( ! b )
+ YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" );
+
+ b->yy_buf_size = (int) (size - 2); /* "- 2" to take care of EOB's */
+ b->yy_buf_pos = b->yy_ch_buf = base;
+ b->yy_is_our_buffer = 0;
+ b->yy_input_file = NULL;
+ b->yy_n_chars = b->yy_buf_size;
+ b->yy_is_interactive = 0;
+ b->yy_at_bol = 1;
+ b->yy_fill_buffer = 0;
+ b->yy_buffer_status = YY_BUFFER_NEW;
+
+ yy_switch_to_buffer( b );
+
+ return b;
+}
+
+/** Setup the input buffer state to scan a string. The next call to yylex() will
+ * scan from a @e copy of @a str.
+ * @param yystr a NUL-terminated string to scan
+ *
+ * @return the newly allocated buffer state object.
+ * @note If you want to scan bytes that may contain NUL values, then use
+ * yy_scan_bytes() instead.
+ */
+YY_BUFFER_STATE yy_scan_string (const char * yystr )
+{
+
+ return yy_scan_bytes( yystr, (int) strlen(yystr) );
+}
+
+/** Setup the input buffer state to scan the given bytes. The next call to yylex() will
+ * scan from a @e copy of @a bytes.
+ * @param yybytes the byte buffer to scan
+ * @param _yybytes_len the number of bytes in the buffer pointed to by @a bytes.
+ *
+ * @return the newly allocated buffer state object.
+ */
+YY_BUFFER_STATE yy_scan_bytes (const char * yybytes, int _yybytes_len )
+{
+ YY_BUFFER_STATE b;
+ char *buf;
+ yy_size_t n;
+ int i;
+
+ /* Get memory for full buffer, including space for trailing EOB's. */
+ n = (yy_size_t) (_yybytes_len + 2);
+ buf = (char *) yyalloc( n );
+ if ( ! buf )
+ YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" );
+
+ for ( i = 0; i < _yybytes_len; ++i )
+ buf[i] = yybytes[i];
+
+ buf[_yybytes_len] = buf[_yybytes_len+1] = YY_END_OF_BUFFER_CHAR;
+
+ b = yy_scan_buffer( buf, n );
+ if ( ! b )
+ YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" );
+
+ /* It's okay to grow etc. this buffer, and we should throw it
+ * away when we're done.
+ */
+ b->yy_is_our_buffer = 1;
+
+ return b;
+}
+
+#ifndef YY_EXIT_FAILURE
+#define YY_EXIT_FAILURE 2
+#endif
+
+static void yynoreturn yy_fatal_error (const char* msg )
+{
+ fprintf( stderr, "%s\n", msg );
+ exit( YY_EXIT_FAILURE );
+}
+
+/* Redefine yyless() so it works in section 3 code. */
+
+#undef yyless
+#define yyless(n) \
+ do \
+ { \
+ /* Undo effects of setting up yytext. */ \
+ int yyless_macro_arg = (n); \
+ YY_LESS_LINENO(yyless_macro_arg);\
+ yytext[yyleng] = (yy_hold_char); \
+ (yy_c_buf_p) = yytext + yyless_macro_arg; \
+ (yy_hold_char) = *(yy_c_buf_p); \
+ *(yy_c_buf_p) = '\0'; \
+ yyleng = yyless_macro_arg; \
+ } \
+ while ( 0 )
+
+/* Accessor methods (get/set functions) to struct members. */
+
+/** Get the current line number.
+ *
+ */
+int yyget_lineno (void)
+{
+
+ return yylineno;
+}
+
+/** Get the input stream.
+ *
+ */
+FILE *yyget_in (void)
+{
+ return yyin;
+}
+
+/** Get the output stream.
+ *
+ */
+FILE *yyget_out (void)
+{
+ return yyout;
+}
+
+/** Get the length of the current token.
+ *
+ */
+int yyget_leng (void)
+{
+ return yyleng;
+}
+
+/** Get the current token.
+ *
+ */
+
+char *yyget_text (void)
+{
+ return yytext;
+}
+
+/** Set the current line number.
+ * @param _line_number line number
+ *
+ */
+void yyset_lineno (int _line_number )
+{
+
+ yylineno = _line_number;
+}
+
+/** Set the input stream. This does not discard the current
+ * input buffer.
+ * @param _in_str A readable stream.
+ *
+ * @see yy_switch_to_buffer
+ */
+void yyset_in (FILE * _in_str )
+{
+ yyin = _in_str ;
+}
+
+void yyset_out (FILE * _out_str )
+{
+ yyout = _out_str ;
+}
+
+int yyget_debug (void)
+{
+ return yy_flex_debug;
+}
+
+void yyset_debug (int _bdebug )
+{
+ yy_flex_debug = _bdebug ;
+}
+
+static int yy_init_globals (void)
+{
+ /* Initialization is the same as for the non-reentrant scanner.
+ * This function is called from yylex_destroy(), so don't allocate here.
+ */
+
+ (yy_buffer_stack) = NULL;
+ (yy_buffer_stack_top) = 0;
+ (yy_buffer_stack_max) = 0;
+ (yy_c_buf_p) = NULL;
+ (yy_init) = 0;
+ (yy_start) = 0;
+
+/* Defined in main.c */
+#ifdef YY_STDINIT
+ yyin = stdin;
+ yyout = stdout;
+#else
+ yyin = NULL;
+ yyout = NULL;
+#endif
+
+ /* For future reference: Set errno on error, since we are called by
+ * yylex_init()
+ */
+ return 0;
+}
+
+/* yylex_destroy is for both reentrant and non-reentrant scanners. */
+int yylex_destroy (void)
+{
+
+ /* Pop the buffer stack, destroying each element. */
+ while(YY_CURRENT_BUFFER){
+ yy_delete_buffer( YY_CURRENT_BUFFER );
+ YY_CURRENT_BUFFER_LVALUE = NULL;
+ yypop_buffer_state();
+ }
+
+ /* Destroy the stack itself. */
+ yyfree((yy_buffer_stack) );
+ (yy_buffer_stack) = NULL;
+
+ /* Reset the globals. This is important in a non-reentrant scanner so the next time
+ * yylex() is called, initialization will occur. */
+ yy_init_globals( );
+
+ return 0;
+}
+
+/*
+ * Internal utility routines.
+ */
+
+#ifndef yytext_ptr
+static void yy_flex_strncpy (char* s1, const char * s2, int n )
+{
+
+ int i;
+ for ( i = 0; i < n; ++i )
+ s1[i] = s2[i];
+}
+#endif
+
+#ifdef YY_NEED_STRLEN
+static int yy_flex_strlen (const char * s )
+{
+ int n;
+ for ( n = 0; s[n]; ++n )
+ ;
+
+ return n;
+}
+#endif
+
+void *yyalloc (yy_size_t size )
+{
+ return malloc(size);
+}
+
+void *yyrealloc (void * ptr, yy_size_t size )
+{
+
+ /* The cast to (char *) in the following accommodates both
+ * implementations that use char* generic pointers, and those
+ * that use void* generic pointers. It works with the latter
+ * because both ANSI C and C++ allow castless assignment from
+ * any pointer type to void*, and deal with argument conversions
+ * as though doing an assignment.
+ */
+ return realloc(ptr, size);
+}
+
+void yyfree (void * ptr )
+{
+ free( (char *) ptr ); /* see yyrealloc() for (char *) cast */
+}
+
+#define YYTABLES_NAME "yytables"
+
+#line 167 "css.l"
+
+
diff --git a/src/exits.c b/src/exits.c
new file mode 100644
index 0000000..56a7eb7
--- /dev/null
+++ b/src/exits.c
@@ -0,0 +1,93 @@
+/* Exit status handling.
+ Copyright (C) 2009-2012, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+ This file is part of GNU Wget.
+
+ GNU Wget is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ GNU Wget is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Wget. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "wget.h"
+#include "exits.h"
+
+static int final_exit_status = WGET_EXIT_SUCCESS;
+
+/* XXX: I don't like that newly-added uerr_t codes will doubtless fall
+ through the craccks, or the fact that we seem to have way more
+ codes than we know what to do with. Need to go through and sort
+ through the truly essential codes, and merge the rest with
+ those. Quite a few are never even used!
+
+ Quite a few of the codes below would have no business being
+ returned to retrieve_url's caller, but since it's very difficult to
+ determine which do and which don't, I grab virtually all of them to
+ be safe. */
+static int
+get_status_for_err (uerr_t err)
+{
+ switch (err)
+ {
+ case RETROK:
+ return WGET_EXIT_SUCCESS;
+ case FOPENERR: case FOPEN_EXCL_ERR: case FWRITEERR: case WRITEFAILED:
+ case UNLINKERR: case CLOSEFAILED: case FILEBADFILE:
+ return WGET_EXIT_IO_FAIL;
+ case NOCONERROR: case HOSTERR: case CONSOCKERR: case CONERROR:
+ case CONSSLERR: case CONIMPOSSIBLE: case FTPRERR: case FTPINVPASV:
+ case READERR: case TRYLIMEXC:
+ return WGET_EXIT_NETWORK_FAIL;
+ case VERIFCERTERR:
+ return WGET_EXIT_SSL_AUTH_FAIL;
+ case FTPLOGINC: case FTPLOGREFUSED: case AUTHFAILED:
+ return WGET_EXIT_SERVER_AUTH_FAIL;
+ case HEOF: case HERR: case ATTRMISSING:
+ return WGET_EXIT_PROTOCOL_ERROR;
+ case WRONGCODE: case FTPPORTERR: case FTPSYSERR:
+ case FTPNSFOD: case FTPUNKNOWNTYPE: case FTPSRVERR:
+ case FTPRETRINT: case FTPRESTFAIL: case FTPNOPASV:
+ case CONTNOTSUPPORTED: case RANGEERR: case RETRBADPATTERN:
+ case PROXERR: case GATEWAYTIMEOUT:
+ return WGET_EXIT_SERVER_ERROR;
+ case URLERROR: case QUOTEXC: case SSLINITFAILED: case UNKNOWNATTR:
+ default:
+ return WGET_EXIT_UNKNOWN;
+ }
+}
+
+/* inform_exit_status
+ *
+ * Ensure that Wget's exit status will reflect the problem indicated
+ * by ERR, unless the exit status has already been set to reflect a more
+ * important problem. */
+void
+inform_exit_status (uerr_t err)
+{
+ int new_status = get_status_for_err (err);
+
+ if (new_status != WGET_EXIT_SUCCESS
+ && (final_exit_status == WGET_EXIT_SUCCESS
+ || new_status < final_exit_status))
+ {
+ final_exit_status = new_status;
+ }
+}
+
+int
+get_exit_status (void)
+{
+ return
+ (final_exit_status == WGET_EXIT_UNKNOWN)
+ ? 1
+ : final_exit_status;
+}
diff --git a/src/exits.h b/src/exits.h
new file mode 100644
index 0000000..169ade1
--- /dev/null
+++ b/src/exits.h
@@ -0,0 +1,48 @@
+/* Exit status related declarations.
+ Copyright (C) 2009-2012, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>. */
+
+#ifndef WGET_EXITS_H
+#define WGET_EXITS_H
+
+#include "wget.h"
+
+/* Final exit code possibilities. Exit codes 1 and 2 are reserved
+ * for situations that lead to direct exits from Wget, not using the
+ * value of final_exit_status. */
+enum
+ {
+ WGET_EXIT_SUCCESS = 0,
+ WGET_EXIT_GENERIC_ERROR = 1,
+ WGET_EXIT_PARSE_ERROR = 2,
+ WGET_EXIT_IO_FAIL = 3,
+ WGET_EXIT_NETWORK_FAIL = 4,
+ WGET_EXIT_SSL_AUTH_FAIL = 5,
+ WGET_EXIT_SERVER_AUTH_FAIL = 6,
+ WGET_EXIT_PROTOCOL_ERROR = 7,
+ WGET_EXIT_SERVER_ERROR = 8,
+
+ WGET_EXIT_UNKNOWN
+ };
+
+void inform_exit_status (uerr_t err);
+
+int get_exit_status (void);
+
+
+#endif /* WGET_EXITS_H */
diff --git a/src/ftp-basic.c b/src/ftp-basic.c
new file mode 100644
index 0000000..197cd83
--- /dev/null
+++ b/src/ftp-basic.c
@@ -0,0 +1,1342 @@
+/* Basic FTP routines.
+ Copyright (C) 1996-2011, 2014-2015, 2018-2020 Free Software
+ Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include <string.h>
+#include <unistd.h>
+#include "utils.h"
+#include "connect.h"
+#include "host.h"
+#include "ftp.h"
+#include "retr.h"
+#include "c-strcase.h"
+
+
+/* Get the response of FTP server and allocate enough room to handle
+ it. <CR> and <LF> characters are stripped from the line, and the
+ line is 0-terminated. All the response lines but the last one are
+ skipped. The last line is determined as described in RFC959.
+
+ If the line is successfully read, FTPOK is returned, and *ret_line
+ is assigned a freshly allocated line. Otherwise, FTPRERR is
+ returned, and the value of *ret_line should be ignored. */
+
+uerr_t
+ftp_response (int fd, char **ret_line)
+{
+ for (;;)
+ {
+ char *p;
+ char *line = fd_read_line (fd);
+ if (!line)
+ return FTPRERR;
+
+ /* Strip trailing CRLF before printing the line, so that
+ quoting doesn't include bogus \012 and \015. */
+ if ((p = strpbrk(line , "\r\n")))
+ *p = 0;
+
+ if (opt.server_response)
+ logprintf (LOG_NOTQUIET, "%s\n",
+ quotearg_style (escape_quoting_style, line));
+ else
+ DEBUGP (("%s\n", quotearg_style (escape_quoting_style, line)));
+
+ /* The last line of output is the one that begins with "ddd ". */
+ if (c_isdigit (line[0]) && c_isdigit (line[1]) && c_isdigit (line[2])
+ && line[3] == ' ')
+ {
+ *ret_line = line;
+ return FTPOK;
+ }
+ xfree (line);
+ }
+}
+
+/* Returns the malloc-ed FTP request, ending with <CR><LF>, printing
+ it if printing is required. If VALUE is NULL, just use
+ command<CR><LF>. */
+static char *
+ftp_request (const char *command, const char *value)
+{
+ char *res;
+
+ if (value)
+ {
+ char *defanged = NULL, buf[256];
+
+ /* Check for newlines in VALUE (possibly injected by the %0A URL
+ escape) making the callers inadvertently send multiple FTP
+ commands at once. Without this check an attacker could
+ intentionally redirect to ftp://server/fakedir%0Acommand.../
+ and execute arbitrary FTP command on a remote FTP server. */
+ if (strpbrk (value, "\r\n"))
+ {
+ /* Copy VALUE to the stack and modify CR/LF to space. */
+ char *p;
+ size_t len = strlen(value);
+
+ if (len < sizeof (buf))
+ defanged = buf;
+ else
+ defanged = xmalloc (len + 1);
+
+ memcpy (defanged, value, len + 1);
+
+ for (p = defanged; *p; p++)
+ if (*p == '\r' || *p == '\n')
+ *p = ' ';
+
+ DEBUGP (("\nDetected newlines in %s \"%s\"; changing to %s \"%s\"\n",
+ command, quotearg_style (escape_quoting_style, value),
+ command, quotearg_style (escape_quoting_style, defanged)));
+
+ /* Make VALUE point to the defanged copy of the string. */
+ value = defanged;
+ }
+ res = concat_strings (command, " ", value, "\r\n", (char *) 0);
+
+ if (defanged != buf)
+ xfree (defanged);
+ }
+ else
+ res = concat_strings (command, "\r\n", (char *) 0);
+ if (opt.server_response)
+ {
+ /* Hack: don't print out password. */
+ if (strncmp (res, "PASS", 4) != 0)
+ logprintf (LOG_ALWAYS, "--> %s\n", res);
+ else
+ logputs (LOG_ALWAYS, "--> PASS Turtle Power!\n\n");
+ }
+ else
+ DEBUGP (("\n--> %s\n", res));
+ return res;
+}
+
+uerr_t
+ftp_greeting (int csock)
+{
+ uerr_t err = FTPOK;
+ char *response = NULL;
+
+ err = ftp_response (csock, &response);
+ if (err != FTPOK)
+ goto bail;
+ if (*response != '2')
+ err = FTPSRVERR;
+
+bail:
+ if (response)
+ xfree (response);
+ return err;
+}
+/* Sends the USER and PASS commands to the server, to control
+ connection socket csock. */
+uerr_t
+ftp_login (int csock, const char *acc, const char *pass)
+{
+ uerr_t err;
+ char *request, *respline;
+ int nwritten;
+
+ /* Send USER username. */
+ request = ftp_request ("USER", acc);
+ nwritten = fd_write (csock, request, strlen (request), -1);
+ if (nwritten < 0)
+ {
+ xfree (request);
+ return WRITEFAILED;
+ }
+ xfree (request);
+ /* Get appropriate response. */
+ err = ftp_response (csock, &respline);
+ if (err != FTPOK)
+ return err;
+ /* An unprobable possibility of logging without a password. */
+ if (*respline == '2')
+ {
+ xfree (respline);
+ return FTPOK;
+ }
+ /* Else, only response 3 is appropriate. */
+ if (*respline != '3')
+ {
+ xfree (respline);
+ return FTPLOGREFUSED;
+ }
+#ifdef ENABLE_OPIE
+ {
+ static const char *skey_head[] = {
+ "331 s/key ",
+ "331 opiekey "
+ };
+ size_t i;
+ const char *seed = NULL;
+
+ for (i = 0; i < countof (skey_head); i++)
+ {
+ int l = strlen (skey_head[i]);
+ if (0 == c_strncasecmp (skey_head[i], respline, l))
+ {
+ seed = respline + l;
+ break;
+ }
+ }
+ if (seed)
+ {
+ int skey_sequence = 0;
+
+ /* Extract the sequence from SEED. */
+ for (; c_isdigit (*seed); seed++)
+ skey_sequence = 10 * skey_sequence + *seed - '0';
+ if (*seed == ' ')
+ ++seed;
+ else
+ {
+ xfree (respline);
+ return FTPLOGREFUSED;
+ }
+ /* Replace the password with the SKEY response to the
+ challenge. */
+ pass = skey_response (skey_sequence, seed, pass);
+ }
+ }
+#endif /* ENABLE_OPIE */
+ xfree (respline);
+ /* Send PASS password. */
+ request = ftp_request ("PASS", pass);
+ nwritten = fd_write (csock, request, strlen (request), -1);
+ if (nwritten < 0)
+ {
+ xfree (request);
+ return WRITEFAILED;
+ }
+ xfree (request);
+ /* Get appropriate response. */
+ err = ftp_response (csock, &respline);
+ if (err != FTPOK)
+ return err;
+ if (*respline != '2')
+ {
+ xfree (respline);
+ return FTPLOGINC;
+ }
+ xfree (respline);
+ /* All OK. */
+ return FTPOK;
+}
+
+static void
+ip_address_to_port_repr (const ip_address *addr, int port, char *buf,
+ size_t buflen)
+{
+ unsigned char *ptr;
+
+ assert (addr->family == AF_INET);
+ /* buf must contain the argument of PORT (of the form a,b,c,d,e,f). */
+ assert (buflen >= 6 * 4);
+
+ ptr = IP_INADDR_DATA (addr);
+ snprintf (buf, buflen, "%d,%d,%d,%d,%d,%d", ptr[0], ptr[1],
+ ptr[2], ptr[3], (port & 0xff00) >> 8, port & 0xff);
+ buf[buflen - 1] = '\0';
+}
+
+/* Bind a port and send the appropriate PORT command to the FTP
+ server. Use acceptport after RETR, to get the socket of data
+ connection. */
+uerr_t
+ftp_port (int csock, int *local_sock)
+{
+ uerr_t err;
+ char *request, *respline;
+ ip_address addr;
+ int nwritten;
+ int port;
+ /* Must contain the argument of PORT (of the form a,b,c,d,e,f). */
+ char bytes[6 * 4 + 1];
+
+ /* Get the address of this side of the connection. */
+ if (!socket_ip_address (csock, &addr, ENDPOINT_LOCAL))
+ return FTPSYSERR;
+
+ assert (addr.family == AF_INET);
+
+ /* Setting port to 0 lets the system choose a free port. */
+ port = 0;
+
+ /* Bind the port. */
+ *local_sock = bind_local (&addr, &port);
+ if (*local_sock < 0)
+ return FTPSYSERR;
+
+ /* Construct the argument of PORT (of the form a,b,c,d,e,f). */
+ ip_address_to_port_repr (&addr, port, bytes, sizeof (bytes));
+
+ /* Send PORT request. */
+ request = ftp_request ("PORT", bytes);
+ nwritten = fd_write (csock, request, strlen (request), -1);
+ if (nwritten < 0)
+ {
+ xfree (request);
+ fd_close (*local_sock);
+ return WRITEFAILED;
+ }
+ xfree (request);
+
+ /* Get appropriate response. */
+ err = ftp_response (csock, &respline);
+ if (err != FTPOK)
+ {
+ fd_close (*local_sock);
+ return err;
+ }
+ if (*respline != '2')
+ {
+ xfree (respline);
+ fd_close (*local_sock);
+ return FTPPORTERR;
+ }
+ xfree (respline);
+ return FTPOK;
+}
+
+#ifdef ENABLE_IPV6
+static void
+ip_address_to_lprt_repr (const ip_address *addr, int port, char *buf,
+ size_t buflen)
+{
+ unsigned char *ptr = IP_INADDR_DATA (addr);
+
+ /* buf must contain the argument of LPRT (of the form af,n,h1,h2,...,hn,p1,p2). */
+ assert (buflen >= 21 * 4);
+
+ /* Construct the argument of LPRT (of the form af,n,h1,h2,...,hn,p1,p2). */
+ switch (addr->family)
+ {
+ case AF_INET:
+ snprintf (buf, buflen, "%d,%d,%d,%d,%d,%d,%d,%d,%d", 4, 4,
+ ptr[0], ptr[1], ptr[2], ptr[3], 2,
+ (port & 0xff00) >> 8, port & 0xff);
+ break;
+ case AF_INET6:
+ snprintf (buf, buflen,
+ "%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d",
+ 6, 16,
+ ptr[0], ptr[1], ptr[2], ptr[3], ptr[4], ptr[5], ptr[6], ptr[7],
+ ptr[8], ptr[9], ptr[10], ptr[11], ptr[12], ptr[13], ptr[14], ptr[15],
+ 2, (port & 0xff00) >> 8, port & 0xff);
+ break;
+ default:
+ abort ();
+ }
+}
+
+/* Bind a port and send the appropriate PORT command to the FTP
+ server. Use acceptport after RETR, to get the socket of data
+ connection. */
+uerr_t
+ftp_lprt (int csock, int *local_sock)
+{
+ uerr_t err;
+ char *request, *respline;
+ ip_address addr;
+ int nwritten;
+ int port;
+ /* Must contain the argument of LPRT (of the form af,n,h1,h2,...,hn,p1,p2). */
+ char bytes[21 * 4 + 1];
+
+ /* Get the address of this side of the connection. */
+ if (!socket_ip_address (csock, &addr, ENDPOINT_LOCAL))
+ return FTPSYSERR;
+
+ assert (addr.family == AF_INET || addr.family == AF_INET6);
+
+ /* Setting port to 0 lets the system choose a free port. */
+ port = 0;
+
+ /* Bind the port. */
+ *local_sock = bind_local (&addr, &port);
+ if (*local_sock < 0)
+ return FTPSYSERR;
+
+ /* Construct the argument of LPRT (of the form af,n,h1,h2,...,hn,p1,p2). */
+ ip_address_to_lprt_repr (&addr, port, bytes, sizeof (bytes));
+
+ /* Send PORT request. */
+ request = ftp_request ("LPRT", bytes);
+ nwritten = fd_write (csock, request, strlen (request), -1);
+ if (nwritten < 0)
+ {
+ xfree (request);
+ fd_close (*local_sock);
+ return WRITEFAILED;
+ }
+ xfree (request);
+ /* Get appropriate response. */
+ err = ftp_response (csock, &respline);
+ if (err != FTPOK)
+ {
+ fd_close (*local_sock);
+ return err;
+ }
+ if (*respline != '2')
+ {
+ xfree (respline);
+ fd_close (*local_sock);
+ return FTPPORTERR;
+ }
+ xfree (respline);
+ return FTPOK;
+}
+
+static void
+ip_address_to_eprt_repr (const ip_address *addr, int port, char *buf,
+ size_t buflen)
+{
+ int afnum;
+
+ /* buf must contain the argument of EPRT (of the form |af|addr|port|).
+ * 4 chars for the | separators, INET6_ADDRSTRLEN chars for addr
+ * 1 char for af (1-2) and 5 chars for port (0-65535) */
+ assert (buflen >= 4 + INET6_ADDRSTRLEN + 1 + 5);
+
+ /* Construct the argument of EPRT (of the form |af|addr|port|). */
+ afnum = (addr->family == AF_INET ? 1 : 2);
+ snprintf (buf, buflen, "|%d|%s|%d|", afnum, print_address (addr), port);
+ buf[buflen - 1] = '\0';
+}
+
+/* Bind a port and send the appropriate PORT command to the FTP
+ server. Use acceptport after RETR, to get the socket of data
+ connection. */
+uerr_t
+ftp_eprt (int csock, int *local_sock)
+{
+ uerr_t err;
+ char *request, *respline;
+ ip_address addr;
+ int nwritten;
+ int port;
+ /* Must contain the argument of EPRT (of the form |af|addr|port|).
+ * 4 chars for the | separators, INET6_ADDRSTRLEN chars for addr
+ * 1 char for af (1-2) and 5 chars for port (0-65535) */
+ char bytes[4 + INET6_ADDRSTRLEN + 1 + 5 + 1];
+
+ /* Get the address of this side of the connection. */
+ if (!socket_ip_address (csock, &addr, ENDPOINT_LOCAL))
+ return FTPSYSERR;
+
+ /* Setting port to 0 lets the system choose a free port. */
+ port = 0;
+
+ /* Bind the port. */
+ *local_sock = bind_local (&addr, &port);
+ if (*local_sock < 0)
+ return FTPSYSERR;
+
+ /* Construct the argument of EPRT (of the form |af|addr|port|). */
+ ip_address_to_eprt_repr (&addr, port, bytes, sizeof (bytes));
+
+ /* Send PORT request. */
+ request = ftp_request ("EPRT", bytes);
+ nwritten = fd_write (csock, request, strlen (request), -1);
+ if (nwritten < 0)
+ {
+ xfree (request);
+ fd_close (*local_sock);
+ return WRITEFAILED;
+ }
+ xfree (request);
+ /* Get appropriate response. */
+ err = ftp_response (csock, &respline);
+ if (err != FTPOK)
+ {
+ fd_close (*local_sock);
+ return err;
+ }
+ if (*respline != '2')
+ {
+ xfree (respline);
+ fd_close (*local_sock);
+ return FTPPORTERR;
+ }
+ xfree (respline);
+ return FTPOK;
+}
+#endif
+
+#ifdef HAVE_SSL
+/*
+ * The following three functions defined into this #ifdef block
+ * wrap the extended FTP commands defined in RFC 2228 (FTP Security Extensions).
+ * Currently, only FTPS is supported, so these functions are only compiled when SSL
+ * support is available, because there's no point in using FTPS when there's no SSL.
+ * Shall someone add new secure FTP protocols in the future, feel free to remove this
+ * #ifdef, or add new constants to it.
+ */
+
+/*
+ * Sends an AUTH command as defined by RFC 2228,
+ * deriving its argument from the scheme. For example, if the provided scheme
+ * is SCHEME_FTPS, the command sent will be "AUTH TLS". Currently, this is the only
+ * scheme supported, so this function will return FTPNOAUTH when supplied a different
+ * one. It will also return FTPNOAUTH if the target server does not support FTPS.
+ */
+uerr_t
+ftp_auth (int csock, enum url_scheme scheme)
+{
+ uerr_t err = 0;
+ int written = 0;
+ char *request = NULL, *response = NULL;
+
+ if (scheme == SCHEME_FTPS)
+ {
+ request = ftp_request ("AUTH", "TLS");
+ written = fd_write (csock, request, strlen (request), -1);
+ if (written < 0)
+ {
+ err = WRITEFAILED;
+ goto bail;
+ }
+ err = ftp_response (csock, &response);
+ if (err != FTPOK)
+ goto bail;
+ if (*response != '2')
+ err = FTPNOAUTH;
+ }
+ else
+ err = FTPNOAUTH;
+
+bail:
+ xfree (request);
+ xfree (response);
+
+ return err;
+}
+
+uerr_t
+ftp_pbsz (int csock, int pbsz)
+{
+ uerr_t err = 0;
+ int written = 0;
+ char spbsz[5];
+ char *request = NULL, *response = NULL;
+
+ snprintf (spbsz, 5, "%d", pbsz);
+ request = ftp_request ("PBSZ", spbsz);
+ written = fd_write (csock, request, strlen (request), -1);
+ if (written < 0)
+ {
+ err = WRITEFAILED;
+ goto bail;
+ }
+
+ err = ftp_response (csock, &response);
+ if (err != FTPOK)
+ goto bail;
+ if (*response != '2')
+ err = FTPNOPBSZ;
+
+bail:
+ xfree (request);
+ xfree (response);
+
+ return err;
+}
+
+uerr_t
+ftp_prot (int csock, enum prot_level prot)
+{
+ uerr_t err = 0;
+ int written = 0;
+ char *request = NULL, *response = NULL;
+ /* value must be a single character value */
+ char value[2];
+
+ value[0] = prot;
+ value[1] = '\0';
+
+ request = ftp_request ("PROT", value);
+ written = fd_write (csock, request, strlen (request), -1);
+ if (written < 0)
+ {
+ err = WRITEFAILED;
+ goto bail;
+ }
+
+ err = ftp_response (csock, &response);
+ if (err != FTPOK)
+ goto bail;
+ if (*response != '2')
+ err = FTPNOPROT;
+
+bail:
+ xfree (request);
+ xfree (response);
+
+ return err;
+}
+#endif /* HAVE_SSL */
+
+/* Similar to ftp_port, but uses `PASV' to initiate the passive FTP
+ transfer. Reads the response from server and parses it. Reads the
+ host and port addresses and returns them. */
+uerr_t
+ftp_pasv (int csock, ip_address *addr, int *port)
+{
+ char *request, *respline, *s;
+ int nwritten, i;
+ uerr_t err;
+ unsigned char tmp[6];
+
+ assert (addr != NULL);
+ assert (port != NULL);
+
+ xzero (*addr);
+
+ /* Form the request. */
+ request = ftp_request ("PASV", NULL);
+ /* And send it. */
+ nwritten = fd_write (csock, request, strlen (request), -1);
+ if (nwritten < 0)
+ {
+ xfree (request);
+ return WRITEFAILED;
+ }
+ xfree (request);
+ /* Get the server response. */
+ err = ftp_response (csock, &respline);
+ if (err != FTPOK)
+ return err;
+ if (*respline != '2')
+ {
+ xfree (respline);
+ return FTPNOPASV;
+ }
+ /* Parse the request. */
+ s = respline;
+ for (s += 4; *s && !c_isdigit (*s); s++)
+ ;
+ if (!*s)
+ {
+ xfree (respline);
+ return FTPINVPASV;
+ }
+ for (i = 0; i < 6; i++)
+ {
+ tmp[i] = 0;
+ for (; c_isdigit (*s); s++)
+ tmp[i] = (*s - '0') + 10 * tmp[i];
+ if (*s == ',')
+ s++;
+ else if (i < 5)
+ {
+ /* When on the last number, anything can be a terminator. */
+ xfree (respline);
+ return FTPINVPASV;
+ }
+ }
+ xfree (respline);
+
+ addr->family = AF_INET;
+ memcpy (IP_INADDR_DATA (addr), tmp, 4);
+ *port = ((tmp[4] << 8) & 0xff00) + tmp[5];
+
+ return FTPOK;
+}
+
+#ifdef ENABLE_IPV6
+/* Similar to ftp_lprt, but uses `LPSV' to initiate the passive FTP
+ transfer. Reads the response from server and parses it. Reads the
+ host and port addresses and returns them. */
+uerr_t
+ftp_lpsv (int csock, ip_address *addr, int *port)
+{
+ char *request, *respline, *s;
+ int nwritten, i, af, addrlen, portlen;
+ uerr_t err;
+ unsigned char tmp[16];
+ unsigned char tmpprt[2];
+
+ assert (addr != NULL);
+ assert (port != NULL);
+
+ xzero (*addr);
+
+ /* Form the request. */
+ request = ftp_request ("LPSV", NULL);
+
+ /* And send it. */
+ nwritten = fd_write (csock, request, strlen (request), -1);
+ if (nwritten < 0)
+ {
+ xfree (request);
+ return WRITEFAILED;
+ }
+ xfree (request);
+
+ /* Get the server response. */
+ err = ftp_response (csock, &respline);
+ if (err != FTPOK)
+ return err;
+ if (*respline != '2')
+ {
+ xfree (respline);
+ return FTPNOPASV;
+ }
+
+ /* Parse the response. */
+ s = respline;
+ for (s += 4; *s && !c_isdigit (*s); s++)
+ ;
+ if (!*s)
+ {
+ xfree (respline);
+ return FTPINVPASV;
+ }
+
+ /* First, get the address family */
+ af = 0;
+ for (; c_isdigit (*s); s++)
+ af = (*s - '0') + 10 * af;
+
+ if (af != 4 && af != 6)
+ {
+ xfree (respline);
+ return FTPINVPASV;
+ }
+
+ if (!*s || *s++ != ',')
+ {
+ xfree (respline);
+ return FTPINVPASV;
+ }
+
+ /* Then, get the address length */
+ addrlen = 0;
+ for (; c_isdigit (*s); s++)
+ addrlen = (*s - '0') + 10 * addrlen;
+
+ if (!*s || *s++ != ',')
+ {
+ xfree (respline);
+ return FTPINVPASV;
+ }
+
+ if (addrlen > 16)
+ {
+ xfree (respline);
+ return FTPINVPASV;
+ }
+
+ if ((af == 4 && addrlen != 4)
+ || (af == 6 && addrlen != 16))
+ {
+ xfree (respline);
+ return FTPINVPASV;
+ }
+
+ /* Now, we get the actual address */
+ for (i = 0; i < addrlen; i++)
+ {
+ tmp[i] = 0;
+ for (; c_isdigit (*s); s++)
+ tmp[i] = (*s - '0') + 10 * tmp[i];
+ if (*s == ',')
+ s++;
+ else
+ {
+ xfree (respline);
+ return FTPINVPASV;
+ }
+ }
+
+ /* Now, get the port length */
+ portlen = 0;
+ for (; c_isdigit (*s); s++)
+ portlen = (*s - '0') + 10 * portlen;
+
+ if (!*s || *s++ != ',')
+ {
+ xfree (respline);
+ return FTPINVPASV;
+ }
+
+ if (portlen > 2)
+ {
+ xfree (respline);
+ return FTPINVPASV;
+ }
+
+ /* Finally, we get the port number */
+ tmpprt[0] = 0;
+ for (; c_isdigit (*s); s++)
+ tmpprt[0] = (*s - '0') + 10 * tmpprt[0];
+
+ if (!*s || *s++ != ',')
+ {
+ xfree (respline);
+ return FTPINVPASV;
+ }
+
+ tmpprt[1] = 0;
+ for (; c_isdigit (*s); s++)
+ tmpprt[1] = (*s - '0') + 10 * tmpprt[1];
+
+ assert (s != NULL);
+
+ if (af == 4)
+ {
+ addr->family = AF_INET;
+ memcpy (IP_INADDR_DATA (addr), tmp, 4);
+ *port = ((tmpprt[0] << 8) & 0xff00) + tmpprt[1];
+ DEBUGP (("lpsv addr is: %s\n", print_address(addr)));
+ DEBUGP (("tmpprt[0] is: %d\n", tmpprt[0]));
+ DEBUGP (("tmpprt[1] is: %d\n", tmpprt[1]));
+ DEBUGP (("*port is: %d\n", *port));
+ }
+ else
+ {
+ assert (af == 6);
+ addr->family = AF_INET6;
+ memcpy (IP_INADDR_DATA (addr), tmp, 16);
+ *port = ((tmpprt[0] << 8) & 0xff00) + tmpprt[1];
+ DEBUGP (("lpsv addr is: %s\n", print_address(addr)));
+ DEBUGP (("tmpprt[0] is: %d\n", tmpprt[0]));
+ DEBUGP (("tmpprt[1] is: %d\n", tmpprt[1]));
+ DEBUGP (("*port is: %d\n", *port));
+ }
+
+ xfree (respline);
+ return FTPOK;
+}
+
+/* Similar to ftp_eprt, but uses `EPSV' to initiate the passive FTP
+ transfer. Reads the response from server and parses it. Reads the
+ host and port addresses and returns them. */
+uerr_t
+ftp_epsv (int csock, ip_address *ip, int *port)
+{
+ char *request, *respline, *start, delim, *s;
+ int nwritten, i;
+ uerr_t err;
+ int tport;
+
+ assert (ip != NULL);
+ assert (port != NULL);
+
+ /* IP already contains the IP address of the control connection's
+ peer, so we don't need to call socket_ip_address here. */
+
+ /* Form the request. */
+ /* EPSV 1 means that we ask for IPv4 and EPSV 2 means that we ask for IPv6. */
+ request = ftp_request ("EPSV", (ip->family == AF_INET ? "1" : "2"));
+
+ /* And send it. */
+ nwritten = fd_write (csock, request, strlen (request), -1);
+ if (nwritten < 0)
+ {
+ xfree (request);
+ return WRITEFAILED;
+ }
+ xfree (request);
+
+ /* Get the server response. */
+ err = ftp_response (csock, &respline);
+ if (err != FTPOK)
+ return err;
+ if (*respline != '2')
+ {
+ xfree (respline);
+ return FTPNOPASV;
+ }
+
+ assert (respline != NULL);
+
+ DEBUGP(("respline is %s\n", respline));
+
+ /* Skip the useless stuff and get what's inside the parentheses */
+ start = strchr (respline, '(');
+ if (start == NULL)
+ {
+ xfree (respline);
+ return FTPINVPASV;
+ }
+
+ /* Skip the first two void fields */
+ s = start + 1;
+ delim = *s++;
+ if (delim < 33 || delim > 126)
+ {
+ xfree (respline);
+ return FTPINVPASV;
+ }
+
+ for (i = 0; i < 2; i++)
+ {
+ if (*s++ != delim)
+ {
+ xfree (respline);
+ return FTPINVPASV;
+ }
+ }
+
+ /* Finally, get the port number */
+ for (tport = 0, i = 0; i < 5 && c_isdigit (*s); i++, s++)
+ tport = (*s - '0') + 10 * tport;
+
+ /* Make sure that the response terminates correctly */
+ if (*s++ != delim)
+ {
+ xfree (respline);
+ return FTPINVPASV;
+ }
+
+ if (*s != ')')
+ {
+ xfree (respline);
+ return FTPINVPASV;
+ }
+
+ *port = tport;
+
+ xfree (respline);
+ return FTPOK;
+}
+#endif
+
+/* Sends the TYPE request to the server. */
+uerr_t
+ftp_type (int csock, int type)
+{
+ char *request, *respline;
+ int nwritten;
+ uerr_t err;
+ char stype[2];
+
+ /* Construct argument. */
+ stype[0] = type;
+ stype[1] = 0;
+ /* Send TYPE request. */
+ request = ftp_request ("TYPE", stype);
+ nwritten = fd_write (csock, request, strlen (request), -1);
+ if (nwritten < 0)
+ {
+ xfree (request);
+ return WRITEFAILED;
+ }
+ xfree (request);
+ /* Get appropriate response. */
+ err = ftp_response (csock, &respline);
+ if (err != FTPOK)
+ return err;
+ if (*respline != '2')
+ {
+ xfree (respline);
+ return FTPUNKNOWNTYPE;
+ }
+ xfree (respline);
+ /* All OK. */
+ return FTPOK;
+}
+
+/* Changes the working directory by issuing a CWD command to the
+ server. */
+uerr_t
+ftp_cwd (int csock, const char *dir)
+{
+ char *request, *respline;
+ int nwritten;
+ uerr_t err;
+
+ /* Send CWD request. */
+ request = ftp_request ("CWD", dir);
+ nwritten = fd_write (csock, request, strlen (request), -1);
+ if (nwritten < 0)
+ {
+ xfree (request);
+ return WRITEFAILED;
+ }
+ xfree (request);
+ /* Get appropriate response. */
+ err = ftp_response (csock, &respline);
+ if (err != FTPOK)
+ return err;
+ if (*respline == '5')
+ {
+ xfree (respline);
+ return FTPNSFOD;
+ }
+ if (*respline != '2')
+ {
+ xfree (respline);
+ return FTPRERR;
+ }
+ xfree (respline);
+ /* All OK. */
+ return FTPOK;
+}
+
+/* Sends REST command to the FTP server. */
+uerr_t
+ftp_rest (int csock, wgint offset)
+{
+ char *request, *respline;
+ int nwritten;
+ uerr_t err;
+
+ request = ftp_request ("REST", number_to_static_string (offset));
+ nwritten = fd_write (csock, request, strlen (request), -1);
+ if (nwritten < 0)
+ {
+ xfree (request);
+ return WRITEFAILED;
+ }
+ xfree (request);
+ /* Get appropriate response. */
+ err = ftp_response (csock, &respline);
+ if (err != FTPOK)
+ return err;
+ if (*respline != '3')
+ {
+ xfree (respline);
+ return FTPRESTFAIL;
+ }
+ xfree (respline);
+ /* All OK. */
+ return FTPOK;
+}
+
+/* Sends RETR command to the FTP server. */
+uerr_t
+ftp_retr (int csock, const char *file)
+{
+ char *request, *respline;
+ int nwritten;
+ uerr_t err;
+
+ /* Send RETR request. */
+ request = ftp_request ("RETR", file);
+ nwritten = fd_write (csock, request, strlen (request), -1);
+ if (nwritten < 0)
+ {
+ xfree (request);
+ return WRITEFAILED;
+ }
+ xfree (request);
+ /* Get appropriate response. */
+ err = ftp_response (csock, &respline);
+ if (err != FTPOK)
+ return err;
+ if (*respline == '5')
+ {
+ xfree (respline);
+ return FTPNSFOD;
+ }
+ if (*respline != '1')
+ {
+ xfree (respline);
+ return FTPRERR;
+ }
+ xfree (respline);
+ /* All OK. */
+ return FTPOK;
+}
+
+/* Sends the LIST command to the server. If FILE is NULL, send just
+ `LIST' (no space). */
+uerr_t
+ftp_list (int csock, const char *file, bool avoid_list_a, bool avoid_list,
+ bool *list_a_used)
+{
+ char *request, *respline;
+ int nwritten;
+ uerr_t err;
+ bool ok = false;
+ size_t i = 0;
+
+ /* 2013-10-12 Andrea Urbani (matfanjol)
+ For more information about LIST and "LIST -a" please look at ftp.c,
+ function getftp, text "__LIST_A_EXPLANATION__".
+
+ If somebody changes the following commands, please, checks also the
+ later "i" variable. */
+ static const char *list_commands[] = {
+ "LIST -a",
+ "LIST"
+ };
+
+ *list_a_used = false;
+
+ if (avoid_list_a)
+ {
+ i = countof (list_commands)- 1;
+ DEBUGP (("(skipping \"LIST -a\")"));
+ }
+
+
+ do {
+ /* Send request. */
+ request = ftp_request (list_commands[i], file);
+ nwritten = fd_write (csock, request, strlen (request), -1);
+ if (nwritten < 0)
+ {
+ xfree (request);
+ return WRITEFAILED;
+ }
+ xfree (request);
+ /* Get appropriate response. */
+ err = ftp_response (csock, &respline);
+ if (err == FTPOK)
+ {
+ if (*respline == '5')
+ {
+ err = FTPNSFOD;
+ }
+ else if (*respline == '1')
+ {
+ err = FTPOK;
+ ok = true;
+ /* Which list command was used? */
+ *list_a_used = (i == 0);
+ }
+ else
+ {
+ err = FTPRERR;
+ }
+ xfree (respline);
+ }
+ ++i;
+ if ((avoid_list) && (i == 1))
+ {
+ /* I skip LIST */
+ ++i;
+ DEBUGP (("(skipping \"LIST\")"));
+ }
+ } while (i < countof (list_commands) && !ok);
+
+ return err;
+}
+
+/* Sends the SYST command to the server. */
+uerr_t
+ftp_syst (int csock, enum stype *server_type, enum ustype *unix_type)
+{
+ char *request, *respline;
+ int nwritten;
+ uerr_t err;
+ char *ftp_last_respline;
+
+ /* Send SYST request. */
+ request = ftp_request ("SYST", NULL);
+ nwritten = fd_write (csock, request, strlen (request), -1);
+ if (nwritten < 0)
+ {
+ xfree (request);
+ return WRITEFAILED;
+ }
+ xfree (request);
+
+ /* Get appropriate response. */
+ err = ftp_response (csock, &respline);
+ if (err != FTPOK)
+ return err;
+ if (*respline == '5')
+ {
+ xfree (respline);
+ return FTPSRVERR;
+ }
+
+ ftp_last_respline = strdup (respline);
+
+ /* Skip the number (215, but 200 (!!!) in case of VMS) */
+ strtok (respline, " ");
+
+ /* Which system type has been reported (we are interested just in the
+ first word of the server response)? */
+ request = strtok (NULL, " ");
+
+ *unix_type = UST_OTHER;
+
+ if (request == NULL)
+ *server_type = ST_OTHER;
+ else if (!c_strcasecmp (request, "VMS"))
+ *server_type = ST_VMS;
+ else if (!c_strcasecmp (request, "UNIX"))
+ {
+ *server_type = ST_UNIX;
+ /* 2013-10-17 Andrea Urbani (matfanjol)
+ I check more in depth the system type */
+ if (!c_strncasecmp (ftp_last_respline, "215 UNIX Type: L8", 17))
+ *unix_type = UST_TYPE_L8;
+ else if (!c_strncasecmp (ftp_last_respline,
+ "215 UNIX MultiNet Unix Emulation V5.3(93)", 41))
+ *unix_type = UST_MULTINET;
+ }
+ else if (!c_strcasecmp (request, "WINDOWS_NT")
+ || !c_strcasecmp (request, "WINDOWS2000"))
+ *server_type = ST_WINNT;
+ else if (!c_strcasecmp (request, "MACOS"))
+ *server_type = ST_MACOS;
+ else if (!c_strcasecmp (request, "OS/400"))
+ *server_type = ST_OS400;
+ else
+ *server_type = ST_OTHER;
+
+ xfree (ftp_last_respline);
+ xfree (respline);
+ /* All OK. */
+ return FTPOK;
+}
+
+/* Sends the PWD command to the server. */
+uerr_t
+ftp_pwd (int csock, char **pwd)
+{
+ char *request, *respline;
+ int nwritten;
+ uerr_t err;
+
+ /* Send PWD request. */
+ request = ftp_request ("PWD", NULL);
+ nwritten = fd_write (csock, request, strlen (request), -1);
+ if (nwritten < 0)
+ {
+ xfree (request);
+ return WRITEFAILED;
+ }
+ xfree (request);
+ /* Get appropriate response. */
+ err = ftp_response (csock, &respline);
+ if (err != FTPOK)
+ return err;
+ if (*respline == '5')
+ {
+ err:
+ xfree (respline);
+ return FTPSRVERR;
+ }
+
+ /* Skip the number (257), leading citation mark, trailing citation mark
+ and everything following it. */
+ strtok (respline, "\"");
+ request = strtok (NULL, "\"");
+ if (!request)
+ /* Treat the malformed response as an error, which the caller has
+ to handle gracefully anyway. */
+ goto err;
+
+ /* Has the `pwd' been already allocated? Free! */
+ xfree (*pwd);
+
+ *pwd = xstrdup (request);
+
+ xfree (respline);
+ /* All OK. */
+ return FTPOK;
+}
+
+/* Sends the SIZE command to the server, and returns the value in 'size'.
+ * If an error occurs, size is set to zero. */
+uerr_t
+ftp_size (int csock, const char *file, wgint *size)
+{
+ char *request, *respline;
+ int nwritten;
+ uerr_t err;
+
+ /* Send PWD request. */
+ request = ftp_request ("SIZE", file);
+ nwritten = fd_write (csock, request, strlen (request), -1);
+ if (nwritten < 0)
+ {
+ xfree (request);
+ *size = 0;
+ return WRITEFAILED;
+ }
+ xfree (request);
+ /* Get appropriate response. */
+ err = ftp_response (csock, &respline);
+ if (err != FTPOK)
+ {
+ *size = 0;
+ return err;
+ }
+ if (*respline == '5')
+ {
+ /*
+ * Probably means SIZE isn't supported on this server.
+ * Error is nonfatal since SIZE isn't in RFC 959
+ */
+ xfree (respline);
+ *size = 0;
+ return FTPOK;
+ }
+
+ errno = 0;
+ *size = str_to_wgint (respline + 4, NULL, 10);
+ if (errno)
+ {
+ /*
+ * Couldn't parse the response for some reason. On the (few)
+ * tests I've done, the response is 213 <SIZE> with nothing else -
+ * maybe something a bit more resilient is necessary. It's not a
+ * fatal error, however.
+ */
+ xfree (respline);
+ *size = 0;
+ return FTPOK;
+ }
+
+ xfree (respline);
+ /* All OK. */
+ return FTPOK;
+}
+
+/* If URL's params are of the form "type=X", return character X.
+ Otherwise, return 'I' (the default type). */
+char
+ftp_process_type (const char *params)
+{
+ if (params
+ && 0 == strncasecmp (params, "type=", 5)
+ && params[5] != '\0')
+ return c_toupper (params[5]);
+ else
+ return 'I';
+}
diff --git a/src/ftp-ls.c b/src/ftp-ls.c
new file mode 100644
index 0000000..bb25754
--- /dev/null
+++ b/src/ftp-ls.c
@@ -0,0 +1,1175 @@
+/* Parsing FTP `ls' output.
+ Copyright (C) 1996-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <time.h>
+#include "utils.h"
+#include "ftp.h"
+#include "url.h"
+#include "convert.h" /* for html_quote_string prototype */
+#include "retr.h" /* for output_stream */
+#include "c-strcase.h"
+
+/* Converts symbolic permissions to number-style ones, e.g. string
+ rwxr-xr-x to 755. For now, it knows nothing of
+ setuid/setgid/sticky. ACLs are ignored. */
+static int
+symperms (const char *s)
+{
+ int perms = 0, i;
+
+ if (strlen (s) < 9)
+ return 0;
+ for (i = 0; i < 3; i++, s += 3)
+ {
+ perms <<= 3;
+ perms += (((s[0] == 'r') << 2) + ((s[1] == 'w') << 1) +
+ (s[2] == 'x' || s[2] == 's'));
+ }
+ return perms;
+}
+
+
+/* Cleans a line of text so that it can be consistently parsed. Destroys
+ <CR> and <LF> in case that they occur at the end of the line and
+ replaces all <TAB> character with <SPACE>. Returns the length of the
+ modified line. */
+static int
+clean_line (char *line, int len)
+{
+ if (len <= 0) return 0;
+
+ while (len > 0 && (line[len - 1] == '\n' || line[len - 1] == '\r'))
+ line[--len] = '\0';
+
+ if (!len) return 0;
+
+ for ( ; *line ; line++ ) if (*line == '\t') *line = ' ';
+
+ return len;
+}
+
+/* Convert the Un*x-ish style directory listing stored in FILE to a
+ linked list of fileinfo (system-independent) entries. The contents
+ of FILE are considered to be produced by the standard Unix `ls -la'
+ output (whatever that might be). BSD (no group) and SYSV (with
+ group) listings are handled.
+
+ The time stamps are stored in a separate variable, time_t
+ compatible (I hope). The timezones are ignored. */
+static struct fileinfo *
+ftp_parse_unix_ls (FILE *fp, int ignore_perms)
+{
+ static const char *months[] = {
+ "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+ };
+ int next, len, i, error, ignore;
+ int year, month, day; /* for time analysis */
+ int hour, min, sec, ptype;
+ struct tm timestruct, *tnow;
+ time_t timenow;
+ size_t bufsize = 0;
+
+ char *line = NULL, *tok, *ptok; /* tokenizer */
+ struct fileinfo *dir, *l, cur; /* list creation */
+
+ dir = l = NULL;
+
+ /* Line loop to end of file: */
+ while ((len = getline (&line, &bufsize, fp)) > 0)
+ {
+ len = clean_line (line, len);
+ /* Skip if total... */
+ if (!c_strncasecmp (line, "total", 5))
+ continue;
+ /* Get the first token (permissions). */
+ tok = strtok (line, " ");
+ if (!tok)
+ continue;
+
+ cur.name = NULL;
+ cur.linkto = NULL;
+
+ /* Decide whether we deal with a file or a directory. */
+ switch (*tok)
+ {
+ case '-':
+ cur.type = FT_PLAINFILE;
+ DEBUGP (("PLAINFILE; "));
+ break;
+ case 'd':
+ cur.type = FT_DIRECTORY;
+ DEBUGP (("DIRECTORY; "));
+ break;
+ case 'l':
+ cur.type = FT_SYMLINK;
+ DEBUGP (("SYMLINK; "));
+ break;
+ default:
+ cur.type = FT_UNKNOWN;
+ DEBUGP (("UNKNOWN; "));
+ break;
+ }
+
+ if (ignore_perms)
+ {
+ switch (cur.type)
+ {
+ case FT_PLAINFILE:
+ cur.perms = 0644;
+ break;
+ case FT_DIRECTORY:
+ cur.perms = 0755;
+ break;
+ default:
+ /*cur.perms = 1023;*/ /* #### What is this? --hniksic */
+ cur.perms = 0644;
+ }
+ DEBUGP (("implicit perms %0o; ", (unsigned) cur.perms));
+ }
+ else
+ {
+ cur.perms = symperms (tok + 1);
+ DEBUGP (("perms %0o; ", (unsigned) cur.perms));
+ }
+
+ error = ignore = 0; /* Erroneous and ignoring entries are
+ treated equally for now. */
+ year = hour = min = sec = 0; /* Silence the compiler. */
+ month = day = 0;
+ ptype = TT_DAY;
+ next = -1;
+ /* While there are tokens on the line, parse them. Next is the
+ number of tokens left until the filename.
+
+ Use the month-name token as the "anchor" (the place where the
+ position wrt the file name is "known"). When a month name is
+ encountered, `next' is set to 5. Also, the preceding
+ characters are parsed to get the file size.
+
+ This tactic is quite dubious when it comes to
+ internationalization issues (non-English month names), but it
+ works for now. */
+ tok = line;
+ while (ptok = tok,
+ (tok = strtok (NULL, " ")) != NULL)
+ {
+ --next;
+ if (next < 0) /* a month name was not encountered */
+ {
+ for (i = 0; i < 12; i++)
+ if (!c_strcasecmp (tok, months[i]))
+ break;
+ /* If we got a month, it means the token before it is the
+ size, and the filename is three tokens away. */
+ if (i != 12)
+ {
+ wgint size;
+
+ /* Parse the previous token with str_to_wgint. */
+ if (ptok == line)
+ {
+ /* Something has gone wrong during parsing. */
+ error = 1;
+ break;
+ }
+ errno = 0;
+ size = str_to_wgint (ptok, NULL, 10);
+ if (size == WGINT_MAX && errno == ERANGE)
+ /* Out of range -- ignore the size. #### Should
+ we refuse to start the download. */
+ cur.size = 0;
+ else
+ cur.size = size;
+ DEBUGP (("size: %s; ", number_to_static_string(cur.size)));
+
+ month = i;
+ next = 5;
+ DEBUGP (("month: %s; ", months[month]));
+ }
+ }
+ else if (next == 4) /* days */
+ {
+ if (tok[1]) /* two-digit... */
+ day = 10 * (*tok - '0') + tok[1] - '0';
+ else /* ...or one-digit */
+ day = *tok - '0';
+ DEBUGP (("day: %d; ", day));
+ }
+ else if (next == 3)
+ {
+ /* This ought to be either the time, or the year. Let's
+ be flexible!
+
+ If we have a number x, it's a year. If we have x:y,
+ it's hours and minutes. If we have x:y:z, z are
+ seconds. */
+ year = 0;
+ min = hour = sec = 0;
+ /* We must deal with digits. */
+ if (c_isdigit (*tok))
+ {
+ /* Suppose it's year. Limit to year 99999 to avoid integer overflow. */
+ for (; c_isdigit (*tok) && year <= 99999; tok++)
+ year = (*tok - '0') + 10 * year;
+ if (*tok == ':')
+ {
+ int n;
+ /* This means these were hours! */
+ hour = year;
+ year = 0;
+ ptype = TT_HOUR_MIN;
+ ++tok;
+ /* Get the minutes... */
+ for (n = 0; c_isdigit (*tok) && n < 2; tok++, n++)
+ min = (*tok - '0') + 10 * min;
+ if (*tok == ':')
+ {
+ /* ...and the seconds. */
+ ++tok;
+ for (n = 0; c_isdigit (*tok) && n < 2; tok++, n++)
+ sec = (*tok - '0') + 10 * sec;
+ }
+ }
+ }
+ if (year)
+ DEBUGP (("year: %d (no tm); ", year));
+ else
+ DEBUGP (("time: %02d:%02d:%02d (no yr); ", hour, min, sec));
+ }
+ else if (next == 2) /* The file name */
+ {
+ int fnlen;
+ char *p;
+
+ /* Since the file name may contain a SPC, it is possible
+ for strtok to handle it wrong. */
+ fnlen = strlen (tok);
+ if (fnlen < len - (tok - line))
+ {
+ /* So we have a SPC in the file name. Restore the
+ original. */
+ tok[fnlen] = ' ';
+ /* If the file is a symbolic link, it should have a
+ ` -> ' somewhere. */
+ if (cur.type == FT_SYMLINK)
+ {
+ p = strstr (tok, " -> ");
+ if (!p)
+ {
+ error = 1;
+ break;
+ }
+ cur.linkto = xstrdup (p + 4);
+ DEBUGP (("link to: %s\n", cur.linkto));
+ /* And separate it from the file name. */
+ *p = '\0';
+ }
+ }
+ /* If we have the filename, add it to the list of files or
+ directories. */
+ /* "." and ".." are an exception! */
+ if (!strcmp (tok, ".") || !strcmp (tok, ".."))
+ {
+ DEBUGP (("\nIgnoring `.' and `..'; "));
+ ignore = 1;
+ break;
+ }
+ /* Some FTP sites choose to have ls -F as their default
+ LIST output, which marks the symlinks with a trailing
+ `@', directory names with a trailing `/' and
+ executables with a trailing `*'. This is no problem
+ unless encountering a symbolic link ending with `@',
+ or an executable ending with `*' on a server without
+ default -F output. I believe these cases are very
+ rare. */
+ fnlen = strlen (tok); /* re-calculate `fnlen' */
+ cur.name = xmalloc (fnlen + 1);
+ memcpy (cur.name, tok, fnlen + 1);
+ if (fnlen)
+ {
+ if (cur.type == FT_DIRECTORY && cur.name[fnlen - 1] == '/')
+ {
+ cur.name[fnlen - 1] = '\0';
+ DEBUGP (("trailing `/' on dir.\n"));
+ }
+ else if (cur.type == FT_SYMLINK && cur.name[fnlen - 1] == '@')
+ {
+ cur.name[fnlen - 1] = '\0';
+ DEBUGP (("trailing `@' on link.\n"));
+ }
+ else if (cur.type == FT_PLAINFILE
+ && (cur.perms & 0111)
+ && cur.name[fnlen - 1] == '*')
+ {
+ cur.name[fnlen - 1] = '\0';
+ DEBUGP (("trailing `*' on exec.\n"));
+ }
+ } /* if (fnlen) */
+ else
+ error = 1;
+ break;
+ }
+ else
+ abort ();
+ } /* while */
+
+ if (!cur.name || (cur.type == FT_SYMLINK && !cur.linkto))
+ error = 1;
+
+ DEBUGP (("%s\n", cur.name ? cur.name : ""));
+
+ if (error || ignore)
+ {
+ DEBUGP (("Skipping.\n"));
+ xfree (cur.name);
+ xfree (cur.linkto);
+ continue;
+ }
+
+ if (!dir)
+ {
+ l = dir = xnew (struct fileinfo);
+ memcpy (l, &cur, sizeof (cur));
+ l->prev = l->next = NULL;
+ }
+ else
+ {
+ cur.prev = l;
+ l->next = xnew (struct fileinfo);
+ l = l->next;
+ memcpy (l, &cur, sizeof (cur));
+ l->next = NULL;
+ }
+ /* Get the current time. */
+ timenow = time (NULL);
+ tnow = localtime (&timenow);
+ /* Build the time-stamp (the idea by zaga@fly.cc.fer.hr). */
+ timestruct.tm_sec = sec;
+ timestruct.tm_min = min;
+ timestruct.tm_hour = hour;
+ timestruct.tm_mday = day;
+ timestruct.tm_mon = month;
+ if (year == 0)
+ {
+ /* Some listings will not specify the year if it is "obvious"
+ that the file was from the previous year. E.g. if today
+ is 97-01-12, and you see a file of Dec 15th, its year is
+ 1996, not 1997. Thanks to Vladimir Volovich for
+ mentioning this! */
+ if (month > tnow->tm_mon)
+ timestruct.tm_year = tnow->tm_year - 1;
+ else
+ timestruct.tm_year = tnow->tm_year;
+ }
+ else
+ timestruct.tm_year = year;
+ if (timestruct.tm_year >= 1900)
+ timestruct.tm_year -= 1900;
+ timestruct.tm_wday = 0;
+ timestruct.tm_yday = 0;
+ timestruct.tm_isdst = -1;
+ l->tstamp = mktime (&timestruct); /* store the time-stamp */
+ l->ptype = ptype;
+ }
+
+ xfree (line);
+ return dir;
+}
+
+static struct fileinfo *
+ftp_parse_winnt_ls (FILE *fp)
+{
+ int len;
+ int year, month, day; /* for time analysis */
+ int hour, min;
+ size_t bufsize = 0;
+ struct tm timestruct;
+
+ char *line = NULL, *tok; /* tokenizer */
+ char *filename;
+ struct fileinfo *dir, *l, cur; /* list creation */
+
+ dir = l = NULL;
+ cur.name = NULL;
+
+ /* Line loop to end of file: */
+ while ((len = getline (&line, &bufsize, fp)) > 0)
+ {
+ len = clean_line (line, len);
+
+ /* Name begins at 39 column of the listing if date presented in `mm-dd-yy'
+ format or at 41 column if date presented in `mm-dd-yyyy' format. Thus,
+ we cannot extract name before we parse date. Using this information we
+ also can recognize filenames that begin with a series of space
+ characters (but who really wants to use such filenames anyway?). */
+ if (len < 40) continue;
+ filename = line + 39;
+
+ /* First column: mm-dd-yy or mm-dd-yyyy. Should atoi() on the month fail,
+ january will be assumed. */
+ tok = strtok(line, "-");
+ if (tok == NULL) continue;
+ month = atoi(tok);
+ if (month < 0) month = 0; else month--;
+ tok = strtok(NULL, "-");
+ if (tok == NULL) continue;
+ day = atoi(tok);
+ tok = strtok(NULL, " ");
+ if (tok == NULL) continue;
+ year = atoi(tok);
+ /* Assuming the epoch starting at 1.1.1970 */
+ if (year <= 70)
+ {
+ year += 100;
+ }
+ else if (year >= 1900)
+ {
+ year -= 1900;
+ if (len < 42) continue;
+ filename += 2;
+ }
+ /* Now it is possible to determine the position of the first symbol in
+ filename. */
+ xfree (cur.name);
+ memset(&cur, 0, sizeof (cur));
+ cur.name = xstrdup(filename);
+ DEBUGP (("Name: '%s'\n", cur.name));
+
+
+ /* Second column: hh:mm[AP]M, listing does not contain value for
+ seconds */
+ tok = strtok(NULL, ":");
+ if (tok == NULL) continue;
+ hour = atoi(tok);
+ tok = strtok(NULL, "M");
+ if (tok == NULL) continue;
+ min = atoi(tok);
+ /* Adjust hour from AM/PM. Just for the record, the sequence goes
+ 11:00AM, 12:00PM, 01:00PM ... 11:00PM, 12:00AM, 01:00AM . */
+ if (tok[0] && tok[1]) tok+=2;
+ if (hour >= 12 || hour < 0) hour = 0;
+ if (*tok == 'P') hour += 12;
+
+ DEBUGP (("YYYY/MM/DD HH:MM - %d/%02d/%02d %02d:%02d\n",
+ year+1900, month, day, hour, min));
+
+ /* Build the time-stamp (copy & paste from above) */
+ timestruct.tm_sec = 0;
+ timestruct.tm_min = min;
+ timestruct.tm_hour = hour;
+ timestruct.tm_mday = day;
+ timestruct.tm_mon = month;
+ timestruct.tm_year = year;
+ timestruct.tm_wday = 0;
+ timestruct.tm_yday = 0;
+ timestruct.tm_isdst = -1;
+ cur.tstamp = mktime (&timestruct); /* store the time-stamp */
+ cur.ptype = TT_HOUR_MIN;
+
+ DEBUGP (("Timestamp: %ld\n", cur.tstamp));
+
+ /* Third column: Either file length, or <DIR>. We also set the
+ permissions (guessed as 0644 for plain files and 0755 for
+ directories as the listing does not give us a clue) and filetype
+ here. */
+ tok = strtok(NULL, " ");
+ if (tok == NULL) continue;
+ while ((tok != NULL) && (*tok == '\0')) tok = strtok(NULL, " ");
+ if (tok == NULL) continue;
+ if (*tok == '<')
+ {
+ cur.type = FT_DIRECTORY;
+ cur.size = 0;
+ cur.perms = 0755;
+ DEBUGP (("Directory\n"));
+ }
+ else
+ {
+ wgint size;
+ cur.type = FT_PLAINFILE;
+ errno = 0;
+ size = str_to_wgint (tok, NULL, 10);
+ if (size == WGINT_MAX && errno == ERANGE)
+ cur.size = 0; /* overflow */
+ else
+ cur.size = size;
+ cur.perms = 0644;
+ DEBUGP (("File, size %s bytes\n", number_to_static_string (cur.size)));
+ }
+
+ cur.linkto = NULL;
+
+ /* And put everything into the linked list */
+ if (!dir)
+ {
+ l = dir = xnew (struct fileinfo);
+ memcpy (l, &cur, sizeof (cur));
+ l->prev = l->next = NULL;
+ }
+ else
+ {
+ cur.prev = l;
+ l->next = xnew (struct fileinfo);
+ l = l->next;
+ memcpy (l, &cur, sizeof (cur));
+ l->next = NULL;
+ }
+ cur.name = NULL;
+ }
+
+ xfree (cur.name);
+ xfree (line);
+ return dir;
+}
+
+
+
+/* Convert the VMS-style directory listing stored in "file" to a
+ linked list of fileinfo (system-independent) entries. The contents
+ of FILE are considered to be produced by the standard VMS
+ "DIRECTORY [/SIZE [= ALL]] /DATE [/OWNER] [/PROTECTION]" command,
+ more or less. (Different VMS FTP servers may have different headers,
+ and may not supply the same data, but all should be subsets of this.)
+
+ VMS normally provides local (server) time and date information.
+ Define the logical name or environment variable
+ "WGET_TIMEZONE_DIFFERENTIAL" (seconds) to adjust the receiving local
+ times if different from the remote local times.
+
+ 2005-02-23 SMS.
+ Added code to eliminate "^" escape characters from ODS5 extended file
+ names. The TCPIP FTP server (V5.4) seems to prefer requests which do
+ not use the escaped names which it provides.
+*/
+
+#define VMS_DEFAULT_PROT_FILE 0644
+#define VMS_DEFAULT_PROT_DIR 0755
+
+/* 2005-02-23 SMS.
+ eat_carets().
+
+ Delete ODS5 extended file name escape characters ("^") in the
+ original buffer.
+ Note that the current scheme does not handle all EFN cases, but it
+ could be made more complicated.
+*/
+
+static void eat_carets( char *str)
+/* char *str; Source pointer. */
+{
+ char *strd; /* Destination pointer. */
+ char hdgt;
+ unsigned char uchr;
+
+ /* Skip ahead to the first "^", if any. */
+ while ((*str != '\0') && (*str != '^'))
+ str++;
+
+ /* If no caret was found, quit early. */
+ if (*str != '\0')
+ {
+ /* Shift characters leftward as carets are found. */
+ strd = str;
+ while (*str != '\0')
+ {
+ uchr = *str;
+ if (uchr == '^')
+ {
+ /* Found a caret. Skip it, and check the next character. */
+ if ((char_prop[(unsigned char) str[1]] & 64) && (char_prop[(unsigned char) str[2]] & 64))
+ {
+ /* Hex digit. Get char code from this and next hex digit. */
+ uchr = *(++str);
+ if (uchr <= '9')
+ {
+ hdgt = uchr - '0'; /* '0' - '9' -> 0 - 9. */
+ }
+ else
+ {
+ hdgt = ((uchr - 'A') & 7) + 10; /* [Aa] - [Ff] -> 10 - 15. */
+ }
+ hdgt <<= 4; /* X16. */
+ uchr = *(++str); /* Next char must be hex digit. */
+ if (uchr <= '9')
+ {
+ uchr = hdgt + uchr - '0';
+ }
+ else
+ {
+ uchr = hdgt + ((uchr - 'A') & 15) + 10;
+ }
+ }
+ else if (uchr == '_')
+ {
+ /* Convert escaped "_" to " ". */
+ uchr = ' ';
+ }
+ else if (uchr == '/')
+ {
+ /* Convert escaped "/" (invalid Zip) to "?" (invalid VMS). */
+ /* Note that this is a left-over from Info-ZIP code, and is
+ probably of little value here, except perhaps to avoid
+ directory confusion which an unconverted slash might cause.
+ */
+ uchr = '?';
+ }
+ /* Else, not a hex digit. Must be a simple escaped character
+ (or Unicode, which is not yet handled here).
+ */
+ }
+ /* Else, not a caret. Use as-is. */
+ *strd = uchr;
+
+ /* Advance destination and source pointers. */
+ strd++;
+ str++;
+ }
+ /* Terminate the destination string. */
+ *strd = '\0';
+ }
+}
+
+
+static struct fileinfo *
+ftp_parse_vms_ls (FILE *fp)
+{
+ int dt, i, j, len;
+ int perms;
+ size_t bufsize = 0;
+ time_t timenow;
+ struct tm *timestruct;
+ char date_str[32];
+
+ char *line = NULL, *tok; /* tokenizer */
+ struct fileinfo *dir, *l, cur; /* list creation */
+
+ dir = l = NULL;
+
+ /* Skip blank lines, Directory heading, and more blank lines. */
+
+ for (j = 0; (i = getline (&line, &bufsize, fp)) > 0; )
+ {
+ i = clean_line (line, i);
+ if (i <= 0)
+ continue; /* Ignore blank line. */
+
+ if ((j == 0) && (line[i - 1] == ']'))
+ {
+ /* Found Directory heading line. Next non-blank line
+ is significant. */
+ j = 1;
+ }
+ else if (!strncmp (line, "Total of ", 9))
+ {
+ /* Found "Total of ..." footing line. No valid data
+ will follow (empty directory). */
+ i = 0; /* Arrange for early exit. */
+ break;
+ }
+ else
+ {
+ break; /* Must be significant data. */
+ }
+ }
+
+ /* Read remainder of file until the next blank line or EOF. */
+
+ cur.name = NULL;
+ while (i > 0)
+ {
+ char *p;
+
+ /* The first token is the file name. After a long name, other
+ data may be on the following line. A valid directory name ends
+ in ".DIR;1" (any case), although some VMS FTP servers may omit
+ the version number (";1").
+ */
+
+ tok = strtok(line, " ");
+ if (tok == NULL) tok = line;
+ DEBUGP (("file name: '%s'\n", tok));
+
+ /* Stripping the version number on a VMS system would be wrong.
+ It may be foolish on a non-VMS system, too, but that's someone
+ else's problem. (Define PRESERVE_VMS_VERSIONS for proper
+ operation on other operating systems.)
+
+ 2005-02-23 SMS.
+ ODS5 extended file names may contain escaped semi-colons, so
+ the version number is identified as right-side decimal digits
+ led by a non-escaped semi-colon. It may be absent.
+ */
+
+#if (!defined( __VMS) && !defined( PRESERVE_VMS_VERSIONS))
+ for (p = tok + strlen (tok); (--p > tok) && c_isdigit(*p); );
+ if (p > tok && (*p == ';') && (*(p - 1) != '^'))
+ {
+ *p = '\0';
+ }
+#endif /* (!defined( __VMS) && !defined( PRESERVE_VMS_VERSIONS)) */
+
+ /* 2005-02-23 SMS.
+ Eliminate "^" escape characters from ODS5 extended file name.
+ (A caret is invalid in an ODS2 name, so this is always safe.)
+ */
+ eat_carets (tok);
+ DEBUGP (("file name-^: '%s'\n", tok));
+
+ /* Differentiate between a directory and any other file. A VMS
+ listing may not include file protections (permissions). Set a
+ default permissions value (according to the file type), which
+ may be overwritten later. Store directory names without the
+ ".DIR;1" file type and version number, as the plain name is
+ what will work in a CWD command.
+ */
+ len = strlen (tok);
+ if (len >= 4 && !c_strncasecmp(tok + (len - 4), ".DIR", 4))
+ {
+ *(tok + (len - 4)) = '\0'; /* Discard ".DIR". */
+ cur.type = FT_DIRECTORY;
+ cur.perms = VMS_DEFAULT_PROT_DIR;
+ DEBUGP (("Directory (nv)\n"));
+ }
+ else if (len >= 6 && !c_strncasecmp (tok + len - 6, ".DIR;1", 6))
+ {
+ *(tok + (len - 6)) = '\0'; /* Discard ".DIR;1". */
+ cur.type = FT_DIRECTORY;
+ cur.perms = VMS_DEFAULT_PROT_DIR;
+ DEBUGP (("Directory (v)\n"));
+ }
+ else
+ {
+ cur.type = FT_PLAINFILE;
+ cur.perms = VMS_DEFAULT_PROT_FILE;
+ DEBUGP (("File\n"));
+ }
+ xfree (cur.name);
+ cur.name = xstrdup (tok);
+ DEBUGP (("Name: '%s'\n", cur.name));
+
+ /* Null the date and time string. */
+ *date_str = '\0';
+
+ /* VMS lacks symbolic links. */
+ cur.linkto = NULL;
+
+ /* VMS reports file sizes in (512-byte) disk blocks, not bytes,
+ hence useless for an integrity check based on byte-count.
+ Set size to unknown.
+ */
+ cur.size = 0;
+
+ /* Get token 2, if any. A long name may force all other data onto
+ a second line. If needed, read the second line.
+ */
+
+ tok = strtok (NULL, " ");
+ if (tok == NULL)
+ {
+ DEBUGP (("Getting additional line.\n"));
+ i = getline (&line, &bufsize, fp);
+ if (i <= 0)
+ {
+ DEBUGP (("EOF. Leaving listing parser.\n"));
+ break;
+ }
+
+ /* Second line must begin with " ". Otherwise, it's a first
+ line (and we may be confused).
+ */
+ i = clean_line (line, i);
+ if (i <= 0)
+ {
+ /* Blank line. End of significant file listing. */
+ DEBUGP (("Blank line. Leaving listing parser.\n"));
+ break;
+ }
+ else if (line[0] != ' ')
+ {
+ DEBUGP (("Non-blank in column 1. Must be a new file name?\n"));
+ continue;
+ }
+ else
+ {
+ tok = strtok (line, " ");
+ if (tok == NULL)
+ {
+ /* Unexpected non-empty but apparently blank line. */
+ DEBUGP (("Null token. Leaving listing parser.\n"));
+ break;
+ }
+ }
+ }
+
+ /* Analyze tokens. (Order is not significant, except date must
+ precede time.)
+
+ Size: ddd or ddd/ddd (where "ddd" is a decimal number)
+ Date: DD-MMM-YYYY
+ Time: HH:MM or HH:MM:SS or HH:MM:SS.CC
+ Owner: [user] or [user,group]
+ Protection: (ppp,ppp,ppp,ppp) (where "ppp" is "RWED" or some
+ subset thereof, for System, Owner, Group, World.
+
+ If permission is lacking, info may be replaced by the string:
+ "No privilege for attempted operation".
+ */
+ while (tok != NULL)
+ {
+ DEBUGP (("Token: >%s<: ", tok));
+
+ if ((strlen (tok) < 12) && (strchr( tok, '-') != NULL))
+ {
+ /* Date. */
+ DEBUGP (("Date.\n"));
+ snprintf(date_str, sizeof(date_str), "%s ", tok);
+ }
+ else if ((strlen (tok) < 12) && (strchr( tok, ':') != NULL))
+ {
+ /* Time. */
+ DEBUGP (("Time. "));
+ strncat( date_str,
+ tok,
+ (sizeof( date_str)- strlen (date_str) - 1));
+ DEBUGP (("Date time: >%s<\n", date_str));
+ }
+ else if (strchr (tok, '[') != NULL)
+ {
+ /* Owner. (Ignore.) */
+ DEBUGP (("Owner.\n"));
+ }
+ else if (strchr (tok, '(') != NULL)
+ {
+ /* Protections (permissions). */
+ perms = 0;
+ j = 0;
+ /*FIXME: Should not be using the variable like this. */
+ for (i = 0; i < (int) strlen(tok); i++)
+ {
+ switch (tok[ i])
+ {
+ case '(':
+ break;
+ case ')':
+ break;
+ case ',':
+ if (j == 0)
+ {
+ perms = 0;
+ }
+ else if (j < 4)
+ {
+ perms <<= 3;
+ }
+ j++;
+ break;
+ case 'R':
+ perms |= 4;
+ break;
+ case 'W':
+ perms |= 2;
+ break;
+ case 'E':
+ perms |= 1;
+ break;
+ case 'D':
+ perms |= 2;
+ break;
+ }
+ }
+ cur.perms = perms;
+ DEBUGP (("Prot. perms = %0o.\n", (unsigned) cur.perms));
+ }
+ else
+ {
+ /* Nondescript. Probably size(s), probably in blocks.
+ Could be "No privilege ..." message. (Ignore.)
+ */
+ DEBUGP (("Ignored (size?).\n"));
+ }
+
+ tok = strtok (NULL, " ");
+ }
+
+ /* Tokens exhausted. Interpret the data, and fill in the
+ structure.
+ */
+ /* Fill tm timestruct according to date-time string. Fractional
+ seconds are ignored. Default to current time, if conversion
+ fails.
+ */
+ timenow = time( NULL);
+ timestruct = localtime( &timenow );
+ strptime( date_str, "%d-%b-%Y %H:%M:%S", timestruct);
+
+ /* Convert struct tm local time to time_t local time. */
+ timenow = mktime (timestruct);
+ /* Offset local time according to environment variable (seconds). */
+ if ((tok = getenv ( "WGET_TIMEZONE_DIFFERENTIAL")) != NULL)
+ {
+ dt = atoi (tok);
+ DEBUGP (("Time differential = %d.\n", dt));
+ }
+ else
+ dt = 0;
+
+ if (dt >= 0)
+ timenow += dt;
+ else
+ timenow -= (-dt);
+
+ cur.tstamp = timenow; /* Store the time-stamp. */
+ DEBUGP (("Timestamp: %ld\n", cur.tstamp));
+ cur.ptype = TT_HOUR_MIN;
+
+ /* Add the data for this item to the linked list, */
+ if (!dir)
+ {
+ l = dir = (struct fileinfo *)xmalloc (sizeof (struct fileinfo));
+ cur.prev = cur.next = NULL;
+ memcpy (l, &cur, sizeof (cur));
+ }
+ else
+ {
+ cur.prev = l;
+ cur.next = NULL;
+ l->next = (struct fileinfo *)xmalloc (sizeof (struct fileinfo));
+ l = l->next;
+ memcpy (l, &cur, sizeof (cur));
+ }
+ cur.name = NULL;
+
+ i = getline (&line, &bufsize, fp);
+ if (i > 0)
+ {
+ i = clean_line (line, i);
+ if (i <= 0)
+ {
+ /* Blank line. End of significant file listing. */
+ break;
+ }
+ }
+ }
+
+ xfree (cur.name);
+ xfree (line);
+ return dir;
+}
+
+
+/* This function switches between the correct parsing routine depending on
+ the SYSTEM_TYPE. The system type should be based on the result of the
+ "SYST" response of the FTP server. According to this response we will
+ use on of the three different listing parsers that cover the most of FTP
+ servers used nowadays. */
+
+struct fileinfo *
+ftp_parse_ls (const char *file, const enum stype system_type)
+{
+ FILE *fp;
+ struct fileinfo *fi;
+
+ fp = fopen (file, "rb");
+ if (!fp)
+ {
+ logprintf (LOG_NOTQUIET, "%s: %s\n", file, strerror (errno));
+ return NULL;
+ }
+
+ fi = ftp_parse_ls_fp (fp, system_type);
+ fclose(fp);
+
+ return fi;
+}
+
+struct fileinfo *
+ftp_parse_ls_fp (FILE *fp, const enum stype system_type)
+{
+ switch (system_type)
+ {
+ case ST_UNIX:
+ return ftp_parse_unix_ls (fp, 0);
+ case ST_WINNT:
+ {
+ /* Detect whether the listing is simulating the UNIX format */
+ int c = fgetc(fp);
+ rewind(fp);
+
+ /* If the first character of the file is '0'-'9', it's WINNT
+ format. */
+ if (c >= '0' && c <='9')
+ return ftp_parse_winnt_ls (fp);
+ else
+ return ftp_parse_unix_ls (fp, 1);
+ }
+ case ST_VMS:
+ return ftp_parse_vms_ls (fp);
+ case ST_MACOS:
+ return ftp_parse_unix_ls (fp, 1);
+ default:
+ logprintf (LOG_NOTQUIET, _("\
+Unsupported listing type, trying Unix listing parser.\n"));
+ return ftp_parse_unix_ls (fp, 0);
+ }
+}
+
+/* Stuff for creating FTP index. */
+
+/* The function creates an HTML index containing references to given
+ directories and files on the appropriate host. The references are
+ FTP. */
+uerr_t
+ftp_index (const char *file, struct url *u, struct fileinfo *f)
+{
+ FILE *fp;
+ char *upwd;
+ char *htcldir; /* HTML-clean dir name */
+ char *htclfile; /* HTML-clean file name */
+ char *urlclfile; /* URL-clean file name */
+
+ if (!output_stream)
+ {
+ fp = fopen (file, "wb");
+ if (!fp)
+ {
+ logprintf (LOG_NOTQUIET, "%s: %s\n", file, strerror (errno));
+ return FOPENERR;
+ }
+ }
+ else
+ fp = output_stream;
+ if (u->user)
+ {
+ char *tmpu, *tmpp; /* temporary, clean user and passwd */
+
+ tmpu = url_escape (u->user);
+ tmpp = u->passwd ? url_escape (u->passwd) : NULL;
+ if (tmpp)
+ upwd = concat_strings (tmpu, ":", tmpp, "@", (char *) 0);
+ else
+ upwd = concat_strings (tmpu, "@", (char *) 0);
+ xfree (tmpu);
+ xfree (tmpp);
+ }
+ else
+ upwd = xstrdup ("");
+
+ htcldir = html_quote_string (u->dir);
+
+ fprintf (fp, "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\n");
+ fprintf (fp, "<html>\n<head>\n<title>");
+ fprintf (fp, _("Index of /%s on %s:%d"), htcldir, u->host, u->port);
+ fprintf (fp, "</title>\n</head>\n<body>\n<h1>");
+ fprintf (fp, _("Index of /%s on %s:%d"), htcldir, u->host, u->port);
+ fprintf (fp, "</h1>\n<hr>\n<pre>\n");
+
+ while (f)
+ {
+ fprintf (fp, " ");
+ if (f->tstamp != -1)
+ {
+ /* #### Should we translate the months? Or, even better, use
+ ISO 8601 dates? */
+ static const char *months[] = {
+ "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+ };
+ time_t tstamp = f->tstamp;
+ struct tm *ptm = localtime (&tstamp);
+
+ fprintf (fp, "%d %s %02d ", ptm->tm_year + 1900, months[ptm->tm_mon],
+ ptm->tm_mday);
+ if (f->ptype == TT_HOUR_MIN)
+ fprintf (fp, "%02d:%02d ", ptm->tm_hour, ptm->tm_min);
+ else
+ fprintf (fp, " ");
+ }
+ else
+ fprintf (fp, _("time unknown "));
+ switch (f->type)
+ {
+ case FT_PLAINFILE:
+ fprintf (fp, _("File "));
+ break;
+ case FT_DIRECTORY:
+ fprintf (fp, _("Directory "));
+ break;
+ case FT_SYMLINK:
+ fprintf (fp, _("Link "));
+ break;
+ default:
+ fprintf (fp, _("Not sure "));
+ break;
+ }
+ htclfile = html_quote_string (f->name);
+ urlclfile = url_escape_unsafe_and_reserved (f->name);
+ fprintf (fp, "<a href=\"ftp://%s%s:%d", upwd, u->host, u->port);
+ if (*u->dir != '/')
+ putc ('/', fp);
+ /* XXX: Should probably URL-escape dir components here, rather
+ * than just HTML-escape, for consistency with the next bit where
+ * we use urlclfile for the file component. Anyway, this is safer
+ * than what we had... */
+ fprintf (fp, "%s", htcldir);
+ if (*u->dir)
+ putc ('/', fp);
+ fprintf (fp, "%s", urlclfile);
+ if (f->type == FT_DIRECTORY)
+ putc ('/', fp);
+ fprintf (fp, "\">%s", htclfile);
+ if (f->type == FT_DIRECTORY)
+ putc ('/', fp);
+ fprintf (fp, "</a> ");
+ if (f->type == FT_PLAINFILE)
+ fprintf (fp, _(" (%s bytes)"), number_to_static_string (f->size));
+ else if (f->type == FT_SYMLINK)
+ fprintf (fp, "-> %s", f->linkto ? f->linkto : "(nil)");
+ putc ('\n', fp);
+ xfree (htclfile);
+ xfree (urlclfile);
+ f = f->next;
+ }
+ fprintf (fp, "</pre>\n</body>\n</html>\n");
+ xfree (htcldir);
+ xfree (upwd);
+ if (!output_stream)
+ fclose (fp);
+ else
+ fflush (fp);
+ return FTPOK;
+}
diff --git a/src/ftp-opie.c b/src/ftp-opie.c
new file mode 100644
index 0000000..abe174b
--- /dev/null
+++ b/src/ftp-opie.c
@@ -0,0 +1,2220 @@
+/* Opie (s/key) support for FTP.
+ Copyright (C) 1998-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "md5.h"
+#include "ftp.h"
+
+/* Dictionary for integer-word translations. Available in appendix D
+ of rfc2289. */
+ static char Wp[2048][4] = {
+ { 'A', '\0', '\0', '\0' },
+ { 'A', 'B', 'E', '\0' },
+ { 'A', 'C', 'E', '\0' },
+ { 'A', 'C', 'T', '\0' },
+ { 'A', 'D', '\0', '\0' },
+ { 'A', 'D', 'A', '\0' },
+ { 'A', 'D', 'D', '\0' },
+ { 'A', 'G', 'O', '\0' },
+ { 'A', 'I', 'D', '\0' },
+ { 'A', 'I', 'M', '\0' },
+ { 'A', 'I', 'R', '\0' },
+ { 'A', 'L', 'L', '\0' },
+ { 'A', 'L', 'P', '\0' },
+ { 'A', 'M', '\0', '\0' },
+ { 'A', 'M', 'Y', '\0' },
+ { 'A', 'N', '\0', '\0' },
+ { 'A', 'N', 'A', '\0' },
+ { 'A', 'N', 'D', '\0' },
+ { 'A', 'N', 'N', '\0' },
+ { 'A', 'N', 'T', '\0' },
+ { 'A', 'N', 'Y', '\0' },
+ { 'A', 'P', 'E', '\0' },
+ { 'A', 'P', 'S', '\0' },
+ { 'A', 'P', 'T', '\0' },
+ { 'A', 'R', 'C', '\0' },
+ { 'A', 'R', 'E', '\0' },
+ { 'A', 'R', 'K', '\0' },
+ { 'A', 'R', 'M', '\0' },
+ { 'A', 'R', 'T', '\0' },
+ { 'A', 'S', '\0', '\0' },
+ { 'A', 'S', 'H', '\0' },
+ { 'A', 'S', 'K', '\0' },
+ { 'A', 'T', '\0', '\0' },
+ { 'A', 'T', 'E', '\0' },
+ { 'A', 'U', 'G', '\0' },
+ { 'A', 'U', 'K', '\0' },
+ { 'A', 'V', 'E', '\0' },
+ { 'A', 'W', 'E', '\0' },
+ { 'A', 'W', 'K', '\0' },
+ { 'A', 'W', 'L', '\0' },
+ { 'A', 'W', 'N', '\0' },
+ { 'A', 'X', '\0', '\0' },
+ { 'A', 'Y', 'E', '\0' },
+ { 'B', 'A', 'D', '\0' },
+ { 'B', 'A', 'G', '\0' },
+ { 'B', 'A', 'H', '\0' },
+ { 'B', 'A', 'M', '\0' },
+ { 'B', 'A', 'N', '\0' },
+ { 'B', 'A', 'R', '\0' },
+ { 'B', 'A', 'T', '\0' },
+ { 'B', 'A', 'Y', '\0' },
+ { 'B', 'E', '\0', '\0' },
+ { 'B', 'E', 'D', '\0' },
+ { 'B', 'E', 'E', '\0' },
+ { 'B', 'E', 'G', '\0' },
+ { 'B', 'E', 'N', '\0' },
+ { 'B', 'E', 'T', '\0' },
+ { 'B', 'E', 'Y', '\0' },
+ { 'B', 'I', 'B', '\0' },
+ { 'B', 'I', 'D', '\0' },
+ { 'B', 'I', 'G', '\0' },
+ { 'B', 'I', 'N', '\0' },
+ { 'B', 'I', 'T', '\0' },
+ { 'B', 'O', 'B', '\0' },
+ { 'B', 'O', 'G', '\0' },
+ { 'B', 'O', 'N', '\0' },
+ { 'B', 'O', 'O', '\0' },
+ { 'B', 'O', 'P', '\0' },
+ { 'B', 'O', 'W', '\0' },
+ { 'B', 'O', 'Y', '\0' },
+ { 'B', 'U', 'B', '\0' },
+ { 'B', 'U', 'D', '\0' },
+ { 'B', 'U', 'G', '\0' },
+ { 'B', 'U', 'M', '\0' },
+ { 'B', 'U', 'N', '\0' },
+ { 'B', 'U', 'S', '\0' },
+ { 'B', 'U', 'T', '\0' },
+ { 'B', 'U', 'Y', '\0' },
+ { 'B', 'Y', '\0', '\0' },
+ { 'B', 'Y', 'E', '\0' },
+ { 'C', 'A', 'B', '\0' },
+ { 'C', 'A', 'L', '\0' },
+ { 'C', 'A', 'M', '\0' },
+ { 'C', 'A', 'N', '\0' },
+ { 'C', 'A', 'P', '\0' },
+ { 'C', 'A', 'R', '\0' },
+ { 'C', 'A', 'T', '\0' },
+ { 'C', 'A', 'W', '\0' },
+ { 'C', 'O', 'D', '\0' },
+ { 'C', 'O', 'G', '\0' },
+ { 'C', 'O', 'L', '\0' },
+ { 'C', 'O', 'N', '\0' },
+ { 'C', 'O', 'O', '\0' },
+ { 'C', 'O', 'P', '\0' },
+ { 'C', 'O', 'T', '\0' },
+ { 'C', 'O', 'W', '\0' },
+ { 'C', 'O', 'Y', '\0' },
+ { 'C', 'R', 'Y', '\0' },
+ { 'C', 'U', 'B', '\0' },
+ { 'C', 'U', 'E', '\0' },
+ { 'C', 'U', 'P', '\0' },
+ { 'C', 'U', 'R', '\0' },
+ { 'C', 'U', 'T', '\0' },
+ { 'D', 'A', 'B', '\0' },
+ { 'D', 'A', 'D', '\0' },
+ { 'D', 'A', 'M', '\0' },
+ { 'D', 'A', 'N', '\0' },
+ { 'D', 'A', 'R', '\0' },
+ { 'D', 'A', 'Y', '\0' },
+ { 'D', 'E', 'E', '\0' },
+ { 'D', 'E', 'L', '\0' },
+ { 'D', 'E', 'N', '\0' },
+ { 'D', 'E', 'S', '\0' },
+ { 'D', 'E', 'W', '\0' },
+ { 'D', 'I', 'D', '\0' },
+ { 'D', 'I', 'E', '\0' },
+ { 'D', 'I', 'G', '\0' },
+ { 'D', 'I', 'N', '\0' },
+ { 'D', 'I', 'P', '\0' },
+ { 'D', 'O', '\0', '\0' },
+ { 'D', 'O', 'E', '\0' },
+ { 'D', 'O', 'G', '\0' },
+ { 'D', 'O', 'N', '\0' },
+ { 'D', 'O', 'T', '\0' },
+ { 'D', 'O', 'W', '\0' },
+ { 'D', 'R', 'Y', '\0' },
+ { 'D', 'U', 'B', '\0' },
+ { 'D', 'U', 'D', '\0' },
+ { 'D', 'U', 'E', '\0' },
+ { 'D', 'U', 'G', '\0' },
+ { 'D', 'U', 'N', '\0' },
+ { 'E', 'A', 'R', '\0' },
+ { 'E', 'A', 'T', '\0' },
+ { 'E', 'D', '\0', '\0' },
+ { 'E', 'E', 'L', '\0' },
+ { 'E', 'G', 'G', '\0' },
+ { 'E', 'G', 'O', '\0' },
+ { 'E', 'L', 'I', '\0' },
+ { 'E', 'L', 'K', '\0' },
+ { 'E', 'L', 'M', '\0' },
+ { 'E', 'L', 'Y', '\0' },
+ { 'E', 'M', '\0', '\0' },
+ { 'E', 'N', 'D', '\0' },
+ { 'E', 'S', 'T', '\0' },
+ { 'E', 'T', 'C', '\0' },
+ { 'E', 'V', 'A', '\0' },
+ { 'E', 'V', 'E', '\0' },
+ { 'E', 'W', 'E', '\0' },
+ { 'E', 'Y', 'E', '\0' },
+ { 'F', 'A', 'D', '\0' },
+ { 'F', 'A', 'N', '\0' },
+ { 'F', 'A', 'R', '\0' },
+ { 'F', 'A', 'T', '\0' },
+ { 'F', 'A', 'Y', '\0' },
+ { 'F', 'E', 'D', '\0' },
+ { 'F', 'E', 'E', '\0' },
+ { 'F', 'E', 'W', '\0' },
+ { 'F', 'I', 'B', '\0' },
+ { 'F', 'I', 'G', '\0' },
+ { 'F', 'I', 'N', '\0' },
+ { 'F', 'I', 'R', '\0' },
+ { 'F', 'I', 'T', '\0' },
+ { 'F', 'L', 'O', '\0' },
+ { 'F', 'L', 'Y', '\0' },
+ { 'F', 'O', 'E', '\0' },
+ { 'F', 'O', 'G', '\0' },
+ { 'F', 'O', 'R', '\0' },
+ { 'F', 'R', 'Y', '\0' },
+ { 'F', 'U', 'M', '\0' },
+ { 'F', 'U', 'N', '\0' },
+ { 'F', 'U', 'R', '\0' },
+ { 'G', 'A', 'B', '\0' },
+ { 'G', 'A', 'D', '\0' },
+ { 'G', 'A', 'G', '\0' },
+ { 'G', 'A', 'L', '\0' },
+ { 'G', 'A', 'M', '\0' },
+ { 'G', 'A', 'P', '\0' },
+ { 'G', 'A', 'S', '\0' },
+ { 'G', 'A', 'Y', '\0' },
+ { 'G', 'E', 'E', '\0' },
+ { 'G', 'E', 'L', '\0' },
+ { 'G', 'E', 'M', '\0' },
+ { 'G', 'E', 'T', '\0' },
+ { 'G', 'I', 'G', '\0' },
+ { 'G', 'I', 'L', '\0' },
+ { 'G', 'I', 'N', '\0' },
+ { 'G', 'O', '\0', '\0' },
+ { 'G', 'O', 'T', '\0' },
+ { 'G', 'U', 'M', '\0' },
+ { 'G', 'U', 'N', '\0' },
+ { 'G', 'U', 'S', '\0' },
+ { 'G', 'U', 'T', '\0' },
+ { 'G', 'U', 'Y', '\0' },
+ { 'G', 'Y', 'M', '\0' },
+ { 'G', 'Y', 'P', '\0' },
+ { 'H', 'A', '\0', '\0' },
+ { 'H', 'A', 'D', '\0' },
+ { 'H', 'A', 'L', '\0' },
+ { 'H', 'A', 'M', '\0' },
+ { 'H', 'A', 'N', '\0' },
+ { 'H', 'A', 'P', '\0' },
+ { 'H', 'A', 'S', '\0' },
+ { 'H', 'A', 'T', '\0' },
+ { 'H', 'A', 'W', '\0' },
+ { 'H', 'A', 'Y', '\0' },
+ { 'H', 'E', '\0', '\0' },
+ { 'H', 'E', 'M', '\0' },
+ { 'H', 'E', 'N', '\0' },
+ { 'H', 'E', 'R', '\0' },
+ { 'H', 'E', 'W', '\0' },
+ { 'H', 'E', 'Y', '\0' },
+ { 'H', 'I', '\0', '\0' },
+ { 'H', 'I', 'D', '\0' },
+ { 'H', 'I', 'M', '\0' },
+ { 'H', 'I', 'P', '\0' },
+ { 'H', 'I', 'S', '\0' },
+ { 'H', 'I', 'T', '\0' },
+ { 'H', 'O', '\0', '\0' },
+ { 'H', 'O', 'B', '\0' },
+ { 'H', 'O', 'C', '\0' },
+ { 'H', 'O', 'E', '\0' },
+ { 'H', 'O', 'G', '\0' },
+ { 'H', 'O', 'P', '\0' },
+ { 'H', 'O', 'T', '\0' },
+ { 'H', 'O', 'W', '\0' },
+ { 'H', 'U', 'B', '\0' },
+ { 'H', 'U', 'E', '\0' },
+ { 'H', 'U', 'G', '\0' },
+ { 'H', 'U', 'H', '\0' },
+ { 'H', 'U', 'M', '\0' },
+ { 'H', 'U', 'T', '\0' },
+ { 'I', '\0', '\0', '\0' },
+ { 'I', 'C', 'Y', '\0' },
+ { 'I', 'D', 'A', '\0' },
+ { 'I', 'F', '\0', '\0' },
+ { 'I', 'K', 'E', '\0' },
+ { 'I', 'L', 'L', '\0' },
+ { 'I', 'N', 'K', '\0' },
+ { 'I', 'N', 'N', '\0' },
+ { 'I', 'O', '\0', '\0' },
+ { 'I', 'O', 'N', '\0' },
+ { 'I', 'Q', '\0', '\0' },
+ { 'I', 'R', 'A', '\0' },
+ { 'I', 'R', 'E', '\0' },
+ { 'I', 'R', 'K', '\0' },
+ { 'I', 'S', '\0', '\0' },
+ { 'I', 'T', '\0', '\0' },
+ { 'I', 'T', 'S', '\0' },
+ { 'I', 'V', 'Y', '\0' },
+ { 'J', 'A', 'B', '\0' },
+ { 'J', 'A', 'G', '\0' },
+ { 'J', 'A', 'M', '\0' },
+ { 'J', 'A', 'N', '\0' },
+ { 'J', 'A', 'R', '\0' },
+ { 'J', 'A', 'W', '\0' },
+ { 'J', 'A', 'Y', '\0' },
+ { 'J', 'E', 'T', '\0' },
+ { 'J', 'I', 'G', '\0' },
+ { 'J', 'I', 'M', '\0' },
+ { 'J', 'O', '\0', '\0' },
+ { 'J', 'O', 'B', '\0' },
+ { 'J', 'O', 'E', '\0' },
+ { 'J', 'O', 'G', '\0' },
+ { 'J', 'O', 'T', '\0' },
+ { 'J', 'O', 'Y', '\0' },
+ { 'J', 'U', 'G', '\0' },
+ { 'J', 'U', 'T', '\0' },
+ { 'K', 'A', 'Y', '\0' },
+ { 'K', 'E', 'G', '\0' },
+ { 'K', 'E', 'N', '\0' },
+ { 'K', 'E', 'Y', '\0' },
+ { 'K', 'I', 'D', '\0' },
+ { 'K', 'I', 'M', '\0' },
+ { 'K', 'I', 'N', '\0' },
+ { 'K', 'I', 'T', '\0' },
+ { 'L', 'A', '\0', '\0' },
+ { 'L', 'A', 'B', '\0' },
+ { 'L', 'A', 'C', '\0' },
+ { 'L', 'A', 'D', '\0' },
+ { 'L', 'A', 'G', '\0' },
+ { 'L', 'A', 'M', '\0' },
+ { 'L', 'A', 'P', '\0' },
+ { 'L', 'A', 'W', '\0' },
+ { 'L', 'A', 'Y', '\0' },
+ { 'L', 'E', 'A', '\0' },
+ { 'L', 'E', 'D', '\0' },
+ { 'L', 'E', 'E', '\0' },
+ { 'L', 'E', 'G', '\0' },
+ { 'L', 'E', 'N', '\0' },
+ { 'L', 'E', 'O', '\0' },
+ { 'L', 'E', 'T', '\0' },
+ { 'L', 'E', 'W', '\0' },
+ { 'L', 'I', 'D', '\0' },
+ { 'L', 'I', 'E', '\0' },
+ { 'L', 'I', 'N', '\0' },
+ { 'L', 'I', 'P', '\0' },
+ { 'L', 'I', 'T', '\0' },
+ { 'L', 'O', '\0', '\0' },
+ { 'L', 'O', 'B', '\0' },
+ { 'L', 'O', 'G', '\0' },
+ { 'L', 'O', 'P', '\0' },
+ { 'L', 'O', 'S', '\0' },
+ { 'L', 'O', 'T', '\0' },
+ { 'L', 'O', 'U', '\0' },
+ { 'L', 'O', 'W', '\0' },
+ { 'L', 'O', 'Y', '\0' },
+ { 'L', 'U', 'G', '\0' },
+ { 'L', 'Y', 'E', '\0' },
+ { 'M', 'A', '\0', '\0' },
+ { 'M', 'A', 'C', '\0' },
+ { 'M', 'A', 'D', '\0' },
+ { 'M', 'A', 'E', '\0' },
+ { 'M', 'A', 'N', '\0' },
+ { 'M', 'A', 'O', '\0' },
+ { 'M', 'A', 'P', '\0' },
+ { 'M', 'A', 'T', '\0' },
+ { 'M', 'A', 'W', '\0' },
+ { 'M', 'A', 'Y', '\0' },
+ { 'M', 'E', '\0', '\0' },
+ { 'M', 'E', 'G', '\0' },
+ { 'M', 'E', 'L', '\0' },
+ { 'M', 'E', 'N', '\0' },
+ { 'M', 'E', 'T', '\0' },
+ { 'M', 'E', 'W', '\0' },
+ { 'M', 'I', 'D', '\0' },
+ { 'M', 'I', 'N', '\0' },
+ { 'M', 'I', 'T', '\0' },
+ { 'M', 'O', 'B', '\0' },
+ { 'M', 'O', 'D', '\0' },
+ { 'M', 'O', 'E', '\0' },
+ { 'M', 'O', 'O', '\0' },
+ { 'M', 'O', 'P', '\0' },
+ { 'M', 'O', 'S', '\0' },
+ { 'M', 'O', 'T', '\0' },
+ { 'M', 'O', 'W', '\0' },
+ { 'M', 'U', 'D', '\0' },
+ { 'M', 'U', 'G', '\0' },
+ { 'M', 'U', 'M', '\0' },
+ { 'M', 'Y', '\0', '\0' },
+ { 'N', 'A', 'B', '\0' },
+ { 'N', 'A', 'G', '\0' },
+ { 'N', 'A', 'N', '\0' },
+ { 'N', 'A', 'P', '\0' },
+ { 'N', 'A', 'T', '\0' },
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+ { 'S', 'L', 'A', 'T' },
+ { 'S', 'L', 'A', 'Y' },
+ { 'S', 'L', 'E', 'D' },
+ { 'S', 'L', 'E', 'W' },
+ { 'S', 'L', 'I', 'D' },
+ { 'S', 'L', 'I', 'M' },
+ { 'S', 'L', 'I', 'T' },
+ { 'S', 'L', 'O', 'B' },
+ { 'S', 'L', 'O', 'G' },
+ { 'S', 'L', 'O', 'T' },
+ { 'S', 'L', 'O', 'W' },
+ { 'S', 'L', 'U', 'G' },
+ { 'S', 'L', 'U', 'M' },
+ { 'S', 'L', 'U', 'R' },
+ { 'S', 'M', 'O', 'G' },
+ { 'S', 'M', 'U', 'G' },
+ { 'S', 'N', 'A', 'G' },
+ { 'S', 'N', 'O', 'B' },
+ { 'S', 'N', 'O', 'W' },
+ { 'S', 'N', 'U', 'B' },
+ { 'S', 'N', 'U', 'G' },
+ { 'S', 'O', 'A', 'K' },
+ { 'S', 'O', 'A', 'R' },
+ { 'S', 'O', 'C', 'K' },
+ { 'S', 'O', 'D', 'A' },
+ { 'S', 'O', 'F', 'A' },
+ { 'S', 'O', 'F', 'T' },
+ { 'S', 'O', 'I', 'L' },
+ { 'S', 'O', 'L', 'D' },
+ { 'S', 'O', 'M', 'E' },
+ { 'S', 'O', 'N', 'G' },
+ { 'S', 'O', 'O', 'N' },
+ { 'S', 'O', 'O', 'T' },
+ { 'S', 'O', 'R', 'E' },
+ { 'S', 'O', 'R', 'T' },
+ { 'S', 'O', 'U', 'L' },
+ { 'S', 'O', 'U', 'R' },
+ { 'S', 'O', 'W', 'N' },
+ { 'S', 'T', 'A', 'B' },
+ { 'S', 'T', 'A', 'G' },
+ { 'S', 'T', 'A', 'N' },
+ { 'S', 'T', 'A', 'R' },
+ { 'S', 'T', 'A', 'Y' },
+ { 'S', 'T', 'E', 'M' },
+ { 'S', 'T', 'E', 'W' },
+ { 'S', 'T', 'I', 'R' },
+ { 'S', 'T', 'O', 'W' },
+ { 'S', 'T', 'U', 'B' },
+ { 'S', 'T', 'U', 'N' },
+ { 'S', 'U', 'C', 'H' },
+ { 'S', 'U', 'D', 'S' },
+ { 'S', 'U', 'I', 'T' },
+ { 'S', 'U', 'L', 'K' },
+ { 'S', 'U', 'M', 'S' },
+ { 'S', 'U', 'N', 'G' },
+ { 'S', 'U', 'N', 'K' },
+ { 'S', 'U', 'R', 'E' },
+ { 'S', 'U', 'R', 'F' },
+ { 'S', 'W', 'A', 'B' },
+ { 'S', 'W', 'A', 'G' },
+ { 'S', 'W', 'A', 'M' },
+ { 'S', 'W', 'A', 'N' },
+ { 'S', 'W', 'A', 'T' },
+ { 'S', 'W', 'A', 'Y' },
+ { 'S', 'W', 'I', 'M' },
+ { 'S', 'W', 'U', 'M' },
+ { 'T', 'A', 'C', 'K' },
+ { 'T', 'A', 'C', 'T' },
+ { 'T', 'A', 'I', 'L' },
+ { 'T', 'A', 'K', 'E' },
+ { 'T', 'A', 'L', 'E' },
+ { 'T', 'A', 'L', 'K' },
+ { 'T', 'A', 'L', 'L' },
+ { 'T', 'A', 'N', 'K' },
+ { 'T', 'A', 'S', 'K' },
+ { 'T', 'A', 'T', 'E' },
+ { 'T', 'A', 'U', 'T' },
+ { 'T', 'E', 'A', 'L' },
+ { 'T', 'E', 'A', 'M' },
+ { 'T', 'E', 'A', 'R' },
+ { 'T', 'E', 'C', 'H' },
+ { 'T', 'E', 'E', 'M' },
+ { 'T', 'E', 'E', 'N' },
+ { 'T', 'E', 'E', 'T' },
+ { 'T', 'E', 'L', 'L' },
+ { 'T', 'E', 'N', 'D' },
+ { 'T', 'E', 'N', 'T' },
+ { 'T', 'E', 'R', 'M' },
+ { 'T', 'E', 'R', 'N' },
+ { 'T', 'E', 'S', 'S' },
+ { 'T', 'E', 'S', 'T' },
+ { 'T', 'H', 'A', 'N' },
+ { 'T', 'H', 'A', 'T' },
+ { 'T', 'H', 'E', 'E' },
+ { 'T', 'H', 'E', 'M' },
+ { 'T', 'H', 'E', 'N' },
+ { 'T', 'H', 'E', 'Y' },
+ { 'T', 'H', 'I', 'N' },
+ { 'T', 'H', 'I', 'S' },
+ { 'T', 'H', 'U', 'D' },
+ { 'T', 'H', 'U', 'G' },
+ { 'T', 'I', 'C', 'K' },
+ { 'T', 'I', 'D', 'E' },
+ { 'T', 'I', 'D', 'Y' },
+ { 'T', 'I', 'E', 'D' },
+ { 'T', 'I', 'E', 'R' },
+ { 'T', 'I', 'L', 'E' },
+ { 'T', 'I', 'L', 'L' },
+ { 'T', 'I', 'L', 'T' },
+ { 'T', 'I', 'M', 'E' },
+ { 'T', 'I', 'N', 'A' },
+ { 'T', 'I', 'N', 'E' },
+ { 'T', 'I', 'N', 'T' },
+ { 'T', 'I', 'N', 'Y' },
+ { 'T', 'I', 'R', 'E' },
+ { 'T', 'O', 'A', 'D' },
+ { 'T', 'O', 'G', 'O' },
+ { 'T', 'O', 'I', 'L' },
+ { 'T', 'O', 'L', 'D' },
+ { 'T', 'O', 'L', 'L' },
+ { 'T', 'O', 'N', 'E' },
+ { 'T', 'O', 'N', 'G' },
+ { 'T', 'O', 'N', 'Y' },
+ { 'T', 'O', 'O', 'K' },
+ { 'T', 'O', 'O', 'L' },
+ { 'T', 'O', 'O', 'T' },
+ { 'T', 'O', 'R', 'E' },
+ { 'T', 'O', 'R', 'N' },
+ { 'T', 'O', 'T', 'E' },
+ { 'T', 'O', 'U', 'R' },
+ { 'T', 'O', 'U', 'T' },
+ { 'T', 'O', 'W', 'N' },
+ { 'T', 'R', 'A', 'G' },
+ { 'T', 'R', 'A', 'M' },
+ { 'T', 'R', 'A', 'Y' },
+ { 'T', 'R', 'E', 'E' },
+ { 'T', 'R', 'E', 'K' },
+ { 'T', 'R', 'I', 'G' },
+ { 'T', 'R', 'I', 'M' },
+ { 'T', 'R', 'I', 'O' },
+ { 'T', 'R', 'O', 'D' },
+ { 'T', 'R', 'O', 'T' },
+ { 'T', 'R', 'O', 'Y' },
+ { 'T', 'R', 'U', 'E' },
+ { 'T', 'U', 'B', 'A' },
+ { 'T', 'U', 'B', 'E' },
+ { 'T', 'U', 'C', 'K' },
+ { 'T', 'U', 'F', 'T' },
+ { 'T', 'U', 'N', 'A' },
+ { 'T', 'U', 'N', 'E' },
+ { 'T', 'U', 'N', 'G' },
+ { 'T', 'U', 'R', 'F' },
+ { 'T', 'U', 'R', 'N' },
+ { 'T', 'U', 'S', 'K' },
+ { 'T', 'W', 'I', 'G' },
+ { 'T', 'W', 'I', 'N' },
+ { 'T', 'W', 'I', 'T' },
+ { 'U', 'L', 'A', 'N' },
+ { 'U', 'N', 'I', 'T' },
+ { 'U', 'R', 'G', 'E' },
+ { 'U', 'S', 'E', 'D' },
+ { 'U', 'S', 'E', 'R' },
+ { 'U', 'S', 'E', 'S' },
+ { 'U', 'T', 'A', 'H' },
+ { 'V', 'A', 'I', 'L' },
+ { 'V', 'A', 'I', 'N' },
+ { 'V', 'A', 'L', 'E' },
+ { 'V', 'A', 'R', 'Y' },
+ { 'V', 'A', 'S', 'E' },
+ { 'V', 'A', 'S', 'T' },
+ { 'V', 'E', 'A', 'L' },
+ { 'V', 'E', 'D', 'A' },
+ { 'V', 'E', 'I', 'L' },
+ { 'V', 'E', 'I', 'N' },
+ { 'V', 'E', 'N', 'D' },
+ { 'V', 'E', 'N', 'T' },
+ { 'V', 'E', 'R', 'B' },
+ { 'V', 'E', 'R', 'Y' },
+ { 'V', 'E', 'T', 'O' },
+ { 'V', 'I', 'C', 'E' },
+ { 'V', 'I', 'E', 'W' },
+ { 'V', 'I', 'N', 'E' },
+ { 'V', 'I', 'S', 'E' },
+ { 'V', 'O', 'I', 'D' },
+ { 'V', 'O', 'L', 'T' },
+ { 'V', 'O', 'T', 'E' },
+ { 'W', 'A', 'C', 'K' },
+ { 'W', 'A', 'D', 'E' },
+ { 'W', 'A', 'G', 'E' },
+ { 'W', 'A', 'I', 'L' },
+ { 'W', 'A', 'I', 'T' },
+ { 'W', 'A', 'K', 'E' },
+ { 'W', 'A', 'L', 'E' },
+ { 'W', 'A', 'L', 'K' },
+ { 'W', 'A', 'L', 'L' },
+ { 'W', 'A', 'L', 'T' },
+ { 'W', 'A', 'N', 'D' },
+ { 'W', 'A', 'N', 'E' },
+ { 'W', 'A', 'N', 'G' },
+ { 'W', 'A', 'N', 'T' },
+ { 'W', 'A', 'R', 'D' },
+ { 'W', 'A', 'R', 'M' },
+ { 'W', 'A', 'R', 'N' },
+ { 'W', 'A', 'R', 'T' },
+ { 'W', 'A', 'S', 'H' },
+ { 'W', 'A', 'S', 'T' },
+ { 'W', 'A', 'T', 'S' },
+ { 'W', 'A', 'T', 'T' },
+ { 'W', 'A', 'V', 'E' },
+ { 'W', 'A', 'V', 'Y' },
+ { 'W', 'A', 'Y', 'S' },
+ { 'W', 'E', 'A', 'K' },
+ { 'W', 'E', 'A', 'L' },
+ { 'W', 'E', 'A', 'N' },
+ { 'W', 'E', 'A', 'R' },
+ { 'W', 'E', 'E', 'D' },
+ { 'W', 'E', 'E', 'K' },
+ { 'W', 'E', 'I', 'R' },
+ { 'W', 'E', 'L', 'D' },
+ { 'W', 'E', 'L', 'L' },
+ { 'W', 'E', 'L', 'T' },
+ { 'W', 'E', 'N', 'T' },
+ { 'W', 'E', 'R', 'E' },
+ { 'W', 'E', 'R', 'T' },
+ { 'W', 'E', 'S', 'T' },
+ { 'W', 'H', 'A', 'M' },
+ { 'W', 'H', 'A', 'T' },
+ { 'W', 'H', 'E', 'E' },
+ { 'W', 'H', 'E', 'N' },
+ { 'W', 'H', 'E', 'T' },
+ { 'W', 'H', 'O', 'A' },
+ { 'W', 'H', 'O', 'M' },
+ { 'W', 'I', 'C', 'K' },
+ { 'W', 'I', 'F', 'E' },
+ { 'W', 'I', 'L', 'D' },
+ { 'W', 'I', 'L', 'L' },
+ { 'W', 'I', 'N', 'D' },
+ { 'W', 'I', 'N', 'E' },
+ { 'W', 'I', 'N', 'G' },
+ { 'W', 'I', 'N', 'K' },
+ { 'W', 'I', 'N', 'O' },
+ { 'W', 'I', 'R', 'E' },
+ { 'W', 'I', 'S', 'E' },
+ { 'W', 'I', 'S', 'H' },
+ { 'W', 'I', 'T', 'H' },
+ { 'W', 'O', 'L', 'F' },
+ { 'W', 'O', 'N', 'T' },
+ { 'W', 'O', 'O', 'D' },
+ { 'W', 'O', 'O', 'L' },
+ { 'W', 'O', 'R', 'D' },
+ { 'W', 'O', 'R', 'E' },
+ { 'W', 'O', 'R', 'K' },
+ { 'W', 'O', 'R', 'M' },
+ { 'W', 'O', 'R', 'N' },
+ { 'W', 'O', 'V', 'E' },
+ { 'W', 'R', 'I', 'T' },
+ { 'W', 'Y', 'N', 'N' },
+ { 'Y', 'A', 'L', 'E' },
+ { 'Y', 'A', 'N', 'G' },
+ { 'Y', 'A', 'N', 'K' },
+ { 'Y', 'A', 'R', 'D' },
+ { 'Y', 'A', 'R', 'N' },
+ { 'Y', 'A', 'W', 'L' },
+ { 'Y', 'A', 'W', 'N' },
+ { 'Y', 'E', 'A', 'H' },
+ { 'Y', 'E', 'A', 'R' },
+ { 'Y', 'E', 'L', 'L' },
+ { 'Y', 'O', 'G', 'A' },
+ { 'Y', 'O', 'K', 'E' }
+};
+
+/* Extract LENGTH bits from the char array S starting with bit number
+ START. It always reads three consecutive octects, which means it
+ can read past end of data when START is at the edge of the region. */
+
+static uint32_t
+extract (const unsigned char *s, int start, int length)
+{
+ unsigned char cl = s[start / 8];
+ unsigned char cc = s[start / 8 + 1];
+ unsigned char cr = s[start / 8 + 2];
+ uint32_t x;
+ x = (uint32_t)(cl << 8 | cc) << 8 | cr;
+ x >>= 24 - (length + (start % 8));
+ x &= (0xffff >> (16 - length));
+ return x;
+}
+
+/* Length of a string known to be at least 1 and at most 4 chars
+ long. */
+
+#define STRLEN_1_4(s) (!(s)[1] ? 1 : !(s)[2] ? 2 : !(s)[3] ? 3 : 4)
+
+/* Encode 8 bytes in C as a string of English words and store them to
+ STORE. Returns STORE. */
+
+static char *
+btoe (char *store, const unsigned char *c)
+{
+ unsigned char cp[10]; /* add in room for the parity 2 bits +
+ extract() slop. */
+ int p, i;
+ char *store_beg = store;
+
+ *store = '\0';
+
+ /* Workaround for extract() reads beyond end of data */
+ xzero (cp);
+ memcpy (cp, c, 8);
+
+ /* Compute parity and append it to CP. */
+ for (p = 0, i = 0; i < 64; i += 2)
+ p += extract (cp, i, 2);
+ cp[8] = (char)p << 6;
+
+ /* The 64 bits of input and the two parity bits comprise 66 bits of
+ data that are now in CP. We convert that information, 11 bits at
+ a time, to English words indexed from Wp. Since there are 2048
+ (2^11) words in Wp, every 11-bit combination corresponds to a
+ distinct word. */
+ memcpy (store, &Wp[extract (cp, 0, 11)][0], 4);
+ store += STRLEN_1_4 (store);
+ *store++ = ' ';
+ memcpy (store, &Wp[extract (cp, 11, 11)][0], 4);
+ store += STRLEN_1_4 (store);
+ *store++ = ' ';
+ memcpy (store, &Wp[extract (cp, 22, 11)][0], 4);
+ store += STRLEN_1_4 (store);
+ *store++ = ' ';
+ memcpy (store, &Wp[extract (cp, 33, 11)][0], 4);
+ store += STRLEN_1_4 (store);
+ *store++ = ' ';
+ memcpy (store, &Wp[extract (cp, 44, 11)][0], 4);
+ store += STRLEN_1_4 (store);
+ *store++ = ' ';
+ memcpy (store, &Wp[extract (cp, 55, 11)][0], 4);
+ store[4] = '\0'; /* make sure the string is terminated */
+
+ DEBUGP (("wrote %s to STORE\n", quote (store_beg)));
+ return store_beg;
+}
+
+/* Calculate the SKEY response, based on the sequence, seed
+ (challenge), and the secret password. The calculated response is
+ used instead of the real password when logging in to SKEY-enabled
+ servers.
+
+ The result is calculated like this:
+
+ + Concatenate SEED and PASS and calculate the 16-byte MD5 checksum.
+
+ + Shorten the checksum to eight bytes by folding the second eight
+ bytes onto the first eight using XOR. The resulting eight-byte
+ sequence is the key.
+
+ + MD5-process the key, fold the checksum to eight bytes and store
+ it back to the key. Repeat this crunching SEQUENCE times.
+ (Sequence is a number that gets decremented every time the user
+ logs in to the server. Therefore an eavesdropper would have to
+ invert the hash function in order to guess the next one-time
+ password.)
+
+ + Convert the resulting 64-bit key to 6 English words separated by
+ spaces (see btoe for details) and return the resulting ASCII
+ string.
+
+ All this is described in section 6 of rfc2289 in more detail. */
+
+const char *
+skey_response (int sequence, const char *seed, const char *pass)
+{
+ unsigned char key[8];
+
+ /* Room to hold 6 four-letter words (heh), 5 space separators, and
+ the terminating \0. 24+5+1 == 30 */
+ static char english[30];
+
+ struct md5_ctx ctx;
+ uint32_t checksum[4];
+
+ md5_init_ctx (&ctx);
+ md5_process_bytes ((const unsigned char *) seed, strlen (seed), &ctx);
+ md5_process_bytes ((const unsigned char *) pass, strlen (pass), &ctx);
+ md5_finish_ctx (&ctx, (unsigned char *) checksum);
+ checksum[0] ^= checksum[2];
+ checksum[1] ^= checksum[3];
+ memcpy (key, checksum, 8);
+
+ while (sequence-- > 0)
+ {
+ md5_init_ctx (&ctx);
+ md5_process_bytes ((unsigned char *) key, 8, &ctx);
+ md5_finish_ctx (&ctx, (unsigned char *) checksum);
+ checksum[0] ^= checksum[2];
+ checksum[1] ^= checksum[3];
+ memcpy (key, checksum, 8);
+ }
+ return btoe (english, key);
+}
diff --git a/src/ftp.c b/src/ftp.c
new file mode 100644
index 0000000..a44bf04
--- /dev/null
+++ b/src/ftp.c
@@ -0,0 +1,2898 @@
+/* File Transfer Protocol support.
+ Copyright (C) 1996-2011, 2014-2015, 2018-2020 Free Software
+ Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+#include <unistd.h>
+#include <assert.h>
+#include <errno.h>
+#include <time.h>
+
+#include "utils.h"
+#include "url.h"
+#include "retr.h"
+#include "ftp.h"
+#include "ssl.h"
+#include "connect.h"
+#include "host.h"
+#include "netrc.h"
+#include "convert.h" /* for downloaded_file */
+#include "recur.h" /* for INFINITE_RECURSION */
+#include "warc.h"
+#include "c-strcase.h"
+#ifdef ENABLE_XATTR
+#include "xattr.h"
+#endif
+
+#ifdef __VMS
+# include "vms.h"
+#endif /* def __VMS */
+
+
+/* File where the "ls -al" listing will be saved. */
+#ifdef MSDOS
+#define LIST_FILENAME "_listing"
+#else
+#define LIST_FILENAME ".listing"
+#endif
+
+typedef struct
+{
+ int st; /* connection status */
+ int cmd; /* command code */
+ int csock; /* control connection socket */
+ double dltime; /* time of the download in msecs */
+ enum stype rs; /* remote system reported by ftp server */
+ enum ustype rsu; /* when rs is ST_UNIX, here there are more details */
+ char *id; /* initial directory */
+ char *target; /* target file name */
+ struct url *proxy; /* FTWK-style proxy */
+} ccon;
+
+
+/* Look for regexp "( *[0-9]+ *byte" (literal parenthesis) anywhere in
+ the string S, and return the number converted to wgint, if found, 0
+ otherwise. */
+static wgint
+ftp_expected_bytes (const char *s)
+{
+ wgint res;
+
+ while (1)
+ {
+ while (*s && *s != '(')
+ ++s;
+ if (!*s)
+ return 0;
+ ++s; /* skip the '(' */
+ res = str_to_wgint (s, (char **) &s, 10);
+ if (!*s)
+ return 0;
+ while (*s && c_isspace (*s))
+ ++s;
+ if (!*s)
+ return 0;
+ if (c_tolower (*s) != 'b')
+ continue;
+ if (c_strncasecmp (s, "byte", 4))
+ continue;
+ else
+ break;
+ }
+ return res;
+}
+
+#ifdef ENABLE_IPV6
+/*
+ * This function sets up a passive data connection with the FTP server.
+ * It is merely a wrapper around ftp_epsv, ftp_lpsv and ftp_pasv.
+ */
+static uerr_t
+ftp_do_pasv (int csock, ip_address *addr, int *port)
+{
+ uerr_t err;
+
+ /* We need to determine the address family and need to call
+ getpeername, so while we're at it, store the address to ADDR.
+ ftp_pasv and ftp_lpsv can simply override it. */
+ if (!socket_ip_address (csock, addr, ENDPOINT_PEER))
+ abort ();
+
+ /* If our control connection is over IPv6, then we first try EPSV and then
+ * LPSV if the former is not supported. If the control connection is over
+ * IPv4, we simply issue the good old PASV request. */
+ switch (addr->family)
+ {
+ case AF_INET:
+ if (!opt.server_response)
+ logputs (LOG_VERBOSE, "==> PASV ... ");
+ err = ftp_pasv (csock, addr, port);
+ break;
+ case AF_INET6:
+ if (!opt.server_response)
+ logputs (LOG_VERBOSE, "==> EPSV ... ");
+ err = ftp_epsv (csock, addr, port);
+
+ /* If EPSV is not supported try LPSV */
+ if (err == FTPNOPASV)
+ {
+ if (!opt.server_response)
+ logputs (LOG_VERBOSE, "==> LPSV ... ");
+ err = ftp_lpsv (csock, addr, port);
+ }
+ break;
+ default:
+ abort ();
+ }
+
+ return err;
+}
+
+/*
+ * This function sets up an active data connection with the FTP server.
+ * It is merely a wrapper around ftp_eprt, ftp_lprt and ftp_port.
+ */
+static uerr_t
+ftp_do_port (int csock, int *local_sock)
+{
+ uerr_t err;
+ ip_address cip;
+
+ if (!socket_ip_address (csock, &cip, ENDPOINT_PEER))
+ abort ();
+
+ /* If our control connection is over IPv6, then we first try EPRT and then
+ * LPRT if the former is not supported. If the control connection is over
+ * IPv4, we simply issue the good old PORT request. */
+ switch (cip.family)
+ {
+ case AF_INET:
+ if (!opt.server_response)
+ logputs (LOG_VERBOSE, "==> PORT ... ");
+ err = ftp_port (csock, local_sock);
+ break;
+ case AF_INET6:
+ if (!opt.server_response)
+ logputs (LOG_VERBOSE, "==> EPRT ... ");
+ err = ftp_eprt (csock, local_sock);
+
+ /* If EPRT is not supported try LPRT */
+ if (err == FTPPORTERR)
+ {
+ if (!opt.server_response)
+ logputs (LOG_VERBOSE, "==> LPRT ... ");
+ err = ftp_lprt (csock, local_sock);
+ }
+ break;
+ default:
+ abort ();
+ }
+ return err;
+}
+#else
+
+static uerr_t
+ftp_do_pasv (int csock, ip_address *addr, int *port)
+{
+ if (!opt.server_response)
+ logputs (LOG_VERBOSE, "==> PASV ... ");
+ return ftp_pasv (csock, addr, port);
+}
+
+static uerr_t
+ftp_do_port (int csock, int *local_sock)
+{
+ if (!opt.server_response)
+ logputs (LOG_VERBOSE, "==> PORT ... ");
+ return ftp_port (csock, local_sock);
+}
+#endif
+
+static void
+print_length (wgint size, wgint start, bool authoritative)
+{
+ logprintf (LOG_VERBOSE, _("Length: %s"), number_to_static_string (size));
+ if (size >= 1024)
+ logprintf (LOG_VERBOSE, " (%s)", human_readable (size, 10, 1));
+ if (start > 0)
+ {
+ if (size - start >= 1024)
+ logprintf (LOG_VERBOSE, _(", %s (%s) remaining"),
+ number_to_static_string (size - start),
+ human_readable (size - start, 10, 1));
+ else
+ logprintf (LOG_VERBOSE, _(", %s remaining"),
+ number_to_static_string (size - start));
+ }
+ logputs (LOG_VERBOSE, !authoritative ? _(" (unauthoritative)\n") : "\n");
+}
+
+static uerr_t ftp_get_listing (struct url *, struct url *, ccon *, struct fileinfo **);
+
+static uerr_t
+get_ftp_greeting (int csock, ccon *con)
+{
+ uerr_t err = 0;
+
+ /* Get the server's greeting */
+ err = ftp_greeting (csock);
+ if (err != FTPOK)
+ {
+ logputs (LOG_NOTQUIET, "Error in server response. Closing.\n");
+ fd_close (csock);
+ con->csock = -1;
+ }
+
+ return err;
+}
+
+#ifdef HAVE_SSL
+static uerr_t
+init_control_ssl_connection (int csock, struct url *u, bool *using_control_security)
+{
+ bool using_security = false;
+
+ /* If '--ftps-implicit' was passed, perform the SSL handshake directly,
+ * and do not send an AUTH command.
+ * Otherwise send an AUTH sequence before login,
+ * and perform the SSL handshake if accepted by server.
+ */
+ if (!opt.ftps_implicit && !opt.server_response)
+ logputs (LOG_VERBOSE, "==> AUTH TLS ... ");
+ if (opt.ftps_implicit || ftp_auth (csock, SCHEME_FTPS) == FTPOK)
+ {
+ if (!ssl_connect_wget (csock, u->host, NULL))
+ {
+ fd_close (csock);
+ return CONSSLERR;
+ }
+ else if (!ssl_check_certificate (csock, u->host))
+ {
+ fd_close (csock);
+ return VERIFCERTERR;
+ }
+
+ if (!opt.ftps_implicit && !opt.server_response)
+ logputs (LOG_VERBOSE, " done.\n");
+
+ /* If implicit FTPS was requested, we act as "normal" FTP, but over SSL.
+ * We're not using RFC 2228 commands.
+ */
+ using_security = true;
+ }
+ else
+ {
+ /* The server does not support 'AUTH TLS'.
+ * Check if --ftps-fallback-to-ftp was passed. */
+ if (opt.ftps_fallback_to_ftp)
+ {
+ logputs (LOG_NOTQUIET, "Server does not support AUTH TLS. Falling back to FTP.\n");
+ using_security = false;
+ }
+ else
+ {
+ fd_close (csock);
+ return FTPNOAUTH;
+ }
+ }
+
+ *using_control_security = using_security;
+ return NOCONERROR;
+}
+#endif
+
+/* Retrieves a file with denoted parameters through opening an FTP
+ connection to the server. It always closes the data connection,
+ and closes the control connection in case of error. If warc_tmp
+ is non-NULL, the downloaded data will be written there as well. */
+static uerr_t
+getftp (struct url *u, struct url *original_url,
+ wgint passed_expected_bytes, wgint *qtyread,
+ wgint restval, ccon *con, int count, wgint *last_expected_bytes,
+ FILE *warc_tmp)
+{
+ int csock, dtsock, local_sock, res;
+ uerr_t err = RETROK; /* appease the compiler */
+ FILE *fp = NULL;
+ char *respline, *tms;
+ const char *user, *passwd, *tmrate;
+ int cmd = con->cmd;
+ wgint expected_bytes = 0;
+ bool got_expected_bytes = false;
+ bool rest_failed = false;
+ int flags;
+ wgint rd_size, previous_rd_size = 0;
+ char type_char;
+ bool try_again;
+ bool list_a_used = false;
+#ifdef HAVE_SSL
+ enum prot_level prot = (opt.ftps_clear_data_connection ? PROT_CLEAR : PROT_PRIVATE);
+ /* these variables tell whether the target server
+ * accepts the security extensions (RFC 2228) or not,
+ * and whether we're actually using any of them
+ * (encryption at the control connection only,
+ * or both at control and data connections) */
+ bool using_control_security = false, using_data_security = false;
+#endif
+
+ assert (con != NULL);
+ assert (con->target != NULL);
+
+ /* Debug-check of the sanity of the request by making sure that LIST
+ and RETR are never both requested (since we can handle only one
+ at a time. */
+ assert (!((cmd & DO_LIST) && (cmd & DO_RETR)));
+ /* Make sure that at least *something* is requested. */
+ assert ((cmd & (DO_LIST | DO_CWD | DO_RETR | DO_LOGIN)) != 0);
+
+ *qtyread = restval;
+
+ /* Find the username with priority */
+ if (u->user)
+ user = u->user;
+ else if (opt.user && (opt.use_askpass || opt.ask_passwd))
+ user = opt.user;
+ else if (opt.ftp_user)
+ user = opt.ftp_user;
+ else if (opt.user)
+ user = opt.user;
+ else
+ user = NULL;
+
+ /* Find the password with priority */
+ if (u->passwd)
+ passwd = u->passwd;
+ else if (opt.passwd && (opt.use_askpass || opt.ask_passwd))
+ passwd = opt.passwd;
+ else if (opt.ftp_passwd)
+ passwd = opt.ftp_passwd;
+ else if (opt.passwd)
+ passwd = opt.passwd;
+ else
+ passwd = NULL;
+
+ /* Check for ~/.netrc if none of the above match */
+ if (opt.netrc && (!user || !passwd))
+ search_netrc (u->host, (const char **) &user, (const char **) &passwd, 1, NULL);
+
+ if (!user) user = "anonymous";
+ if (!passwd) passwd = "-wget@";
+
+ dtsock = -1;
+ local_sock = -1;
+ con->dltime = 0;
+
+#ifdef HAVE_SSL
+ if (u->scheme == SCHEME_FTPS)
+ {
+ /* Initialize SSL layer first */
+ if (!ssl_init ())
+ {
+ scheme_disable (SCHEME_FTPS);
+ logprintf (LOG_NOTQUIET, _("Could not initialize SSL. It will be disabled.\n"));
+ err = SSLINITFAILED;
+ return err;
+ }
+
+ /* If we're using the default FTP port and implicit FTPS was requested,
+ * rewrite the port to the default *implicit* FTPS port.
+ */
+ if (opt.ftps_implicit && u->port == DEFAULT_FTP_PORT)
+ {
+ DEBUGP (("Implicit FTPS was specified. Rewriting default port to %d.\n", DEFAULT_FTPS_IMPLICIT_PORT));
+ u->port = DEFAULT_FTPS_IMPLICIT_PORT;
+ }
+ }
+#endif
+
+ if (!(cmd & DO_LOGIN))
+ {
+ csock = con->csock;
+#ifdef HAVE_SSL
+ using_data_security = con->st & DATA_CHANNEL_SECURITY;
+#endif
+ }
+ else /* cmd & DO_LOGIN */
+ {
+ char *host = con->proxy ? con->proxy->host : u->host;
+ int port = con->proxy ? con->proxy->port : u->port;
+
+ /* Login to the server: */
+
+ /* First: Establish the control connection. */
+
+ csock = connect_to_host (host, port);
+ if (csock == E_HOST)
+ return HOSTERR;
+ else if (csock < 0)
+ return (retryable_socket_connect_error (errno)
+ ? CONERROR : CONIMPOSSIBLE);
+
+ if (cmd & LEAVE_PENDING)
+ con->csock = csock;
+ else
+ con->csock = -1;
+
+#ifdef HAVE_SSL
+ if (u->scheme == SCHEME_FTPS)
+ {
+ /* If we're in implicit FTPS mode, we have to set up SSL/TLS before everything else.
+ * Otherwise we first read the server's greeting, and then send an "AUTH TLS".
+ */
+ if (opt.ftps_implicit)
+ {
+ err = init_control_ssl_connection (csock, u, &using_control_security);
+ if (err != NOCONERROR)
+ return err;
+ err = get_ftp_greeting (csock, con);
+ if (err != FTPOK)
+ return err;
+ }
+ else
+ {
+ err = get_ftp_greeting (csock, con);
+ if (err != FTPOK)
+ return err;
+ err = init_control_ssl_connection (csock, u, &using_control_security);
+ if (err != NOCONERROR)
+ return err;
+ }
+ }
+ else
+ {
+ err = get_ftp_greeting (csock, con);
+ if (err != FTPOK)
+ return err;
+ }
+#else
+ err = get_ftp_greeting (csock, con);
+ if (err != FTPOK)
+ return err;
+#endif
+
+ /* Second: Login with proper USER/PASS sequence. */
+ logprintf (LOG_VERBOSE, _("Logging in as %s ... "),
+ quotearg_style (escape_quoting_style, user));
+ if (opt.server_response)
+ logputs (LOG_ALWAYS, "\n");
+ if (con->proxy)
+ {
+ /* If proxy is in use, log in as username@target-site. */
+ char *logname = concat_strings (user, "@", u->host, (char *) 0);
+ err = ftp_login (csock, logname, passwd);
+ xfree (logname);
+ }
+ else
+ err = ftp_login (csock, user, passwd);
+
+ /* FTPRERR, FTPSRVERR, WRITEFAILED, FTPLOGREFUSED, FTPLOGINC */
+ switch (err)
+ {
+ case FTPRERR:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET, _("\
+Error in server response, closing control connection.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ return err;
+ case FTPSRVERR:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET, _("Error in server greeting.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ return err;
+ case WRITEFAILED:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET,
+ _("Write failed, closing control connection.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ return err;
+ case FTPLOGREFUSED:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET, _("The server refuses login.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ return FTPLOGREFUSED;
+ case FTPLOGINC:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET, _("Login incorrect.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ return FTPLOGINC;
+ case FTPOK:
+ if (!opt.server_response)
+ logputs (LOG_VERBOSE, _("Logged in!\n"));
+ break;
+ default:
+ abort ();
+ }
+
+#ifdef HAVE_SSL
+ if (using_control_security)
+ {
+ /* Send the PBSZ and PROT commands, in that order.
+ * If we are here it means that the server has already accepted
+ * some form of FTPS. Thus, these commands must work.
+ * If they don't work, that's an error. There's no sense in honoring
+ * --ftps-fallback-to-ftp or similar options. */
+ if (u->scheme == SCHEME_FTPS)
+ {
+ if (!opt.server_response)
+ logputs (LOG_VERBOSE, "==> PBSZ 0 ... ");
+ if ((err = ftp_pbsz (csock, 0)) == FTPNOPBSZ)
+ {
+ logputs (LOG_NOTQUIET, _("Server did not accept the 'PBSZ 0' command.\n"));
+ return err;
+ }
+ if (!opt.server_response)
+ logputs (LOG_VERBOSE, "done.");
+
+ if (!opt.server_response)
+ logprintf (LOG_VERBOSE, " ==> PROT %c ... ", (int) prot);
+ if ((err = ftp_prot (csock, prot)) == FTPNOPROT)
+ {
+ logprintf (LOG_NOTQUIET, _("Server did not accept the 'PROT %c' command.\n"), (int) prot);
+ return err;
+ }
+ if (!opt.server_response)
+ logputs (LOG_VERBOSE, "done.\n");
+
+ if (prot != PROT_CLEAR)
+ {
+ using_data_security = true;
+ con->st |= DATA_CHANNEL_SECURITY;
+ }
+ }
+ }
+#endif
+
+ /* Third: Get the system type */
+ if (!opt.server_response)
+ logprintf (LOG_VERBOSE, "==> SYST ... ");
+ err = ftp_syst (csock, &con->rs, &con->rsu);
+ /* FTPRERR */
+ switch (err)
+ {
+ case FTPRERR:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET, _("\
+Error in server response, closing control connection.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ return err;
+ case FTPSRVERR:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET,
+ _("Server error, can't determine system type.\n"));
+ break;
+ case FTPOK:
+ /* Everything is OK. */
+ break;
+ default:
+ abort ();
+ }
+ if (!opt.server_response && err != FTPSRVERR)
+ logputs (LOG_VERBOSE, _("done. "));
+
+ /* 2013-10-17 Andrea Urbani (matfanjol)
+ According to the system type I choose which
+ list command will be used.
+ If I don't know that system, I will try, the
+ first time of each session, "LIST -a" and
+ "LIST". (see __LIST_A_EXPLANATION__ below) */
+ switch (con->rs)
+ {
+ case ST_VMS:
+ /* About ST_VMS there is an old note:
+ 2008-01-29 SMS. For a VMS FTP server, where "LIST -a" may not
+ fail, but will never do what is desired here,
+ skip directly to the simple "LIST" command
+ (assumed to be the last one in the list). */
+ DEBUGP (("\nVMS: I know it and I will use \"LIST\" as standard list command\n"));
+ con->st |= LIST_AFTER_LIST_A_CHECK_DONE;
+ con->st |= AVOID_LIST_A;
+ break;
+ case ST_UNIX:
+ if (con->rsu == UST_MULTINET)
+ {
+ DEBUGP (("\nUNIX MultiNet: I know it and I will use \"LIST\" "
+ "as standard list command\n"));
+ con->st |= LIST_AFTER_LIST_A_CHECK_DONE;
+ con->st |= AVOID_LIST_A;
+ }
+ else if (con->rsu == UST_TYPE_L8)
+ {
+ DEBUGP (("\nUNIX TYPE L8: I know it and I will use \"LIST -a\" "
+ "as standard list command\n"));
+ con->st |= LIST_AFTER_LIST_A_CHECK_DONE;
+ con->st |= AVOID_LIST;
+ }
+ break;
+ default:
+ break;
+ }
+
+ /* Fourth: Find the initial ftp directory */
+
+ if (!opt.server_response)
+ logprintf (LOG_VERBOSE, "==> PWD ... ");
+ err = ftp_pwd (csock, &con->id);
+ /* FTPRERR */
+ switch (err)
+ {
+ case FTPRERR:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET, _("\
+Error in server response, closing control connection.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ return err;
+ case FTPSRVERR :
+ /* PWD unsupported -- assume "/". */
+ xfree (con->id);
+ con->id = xstrdup ("/");
+ break;
+ case FTPOK:
+ /* Everything is OK. */
+ break;
+ default:
+ abort ();
+ }
+
+#if 0
+ /* 2004-09-17 SMS.
+ Don't help me out. Please.
+ A reasonably recent VMS FTP server will cope just fine with
+ UNIX file specifications. This code just spoils things.
+ Discarding the device name, for example, is not a wise move.
+ This code was disabled but left in as an example of what not
+ to do.
+ */
+
+ /* VMS will report something like "PUB$DEVICE:[INITIAL.FOLDER]".
+ Convert it to "/INITIAL/FOLDER" */
+ if (con->rs == ST_VMS)
+ {
+ char *path = strchr (con->id, '[');
+ char *pathend = path ? strchr (path + 1, ']') : NULL;
+ if (!path || !pathend)
+ DEBUGP (("Initial VMS directory not in the form [...]!\n"));
+ else
+ {
+ char *idir = con->id;
+ DEBUGP (("Preprocessing the initial VMS directory\n"));
+ DEBUGP ((" old = '%s'\n", con->id));
+ /* We do the conversion in-place by copying the stuff
+ between [ and ] to the beginning, and changing dots
+ to slashes at the same time. */
+ *idir++ = '/';
+ for (++path; path < pathend; path++, idir++)
+ *idir = *path == '.' ? '/' : *path;
+ *idir = '\0';
+ DEBUGP ((" new = '%s'\n\n", con->id));
+ }
+ }
+#endif /* 0 */
+
+ if (!opt.server_response)
+ logputs (LOG_VERBOSE, _("done.\n"));
+
+ /* Fifth: Set the FTP type. */
+ type_char = ftp_process_type (u->params);
+ if (!opt.server_response)
+ logprintf (LOG_VERBOSE, "==> TYPE %c ... ", type_char);
+ err = ftp_type (csock, type_char);
+ /* FTPRERR, WRITEFAILED, FTPUNKNOWNTYPE */
+ switch (err)
+ {
+ case FTPRERR:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET, _("\
+Error in server response, closing control connection.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ return err;
+ case WRITEFAILED:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET,
+ _("Write failed, closing control connection.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ return err;
+ case FTPUNKNOWNTYPE:
+ logputs (LOG_VERBOSE, "\n");
+ logprintf (LOG_NOTQUIET,
+ _("Unknown type `%c', closing control connection.\n"),
+ type_char);
+ fd_close (csock);
+ con->csock = -1;
+ return err;
+ case FTPOK:
+ /* Everything is OK. */
+ break;
+ default:
+ abort ();
+ }
+ if (!opt.server_response)
+ logputs (LOG_VERBOSE, _("done. "));
+ } /* do login */
+
+ if (cmd & DO_CWD)
+ {
+ if (!*u->dir)
+ logputs (LOG_VERBOSE, _("==> CWD not needed.\n"));
+ else
+ {
+ const char *targ = NULL;
+ char *target = u->dir;
+ char targetbuf[1024];
+ int cwd_count;
+ int cwd_end;
+ int cwd_start;
+
+ DEBUGP (("changing working directory\n"));
+
+ /* Change working directory. To change to a non-absolute
+ Unix directory, we need to prepend initial directory
+ (con->id) to it. Absolute directories "just work".
+
+ A relative directory is one that does not begin with '/'
+ and, on non-Unix OS'es, one that doesn't begin with
+ "[a-z]:".
+
+ This is not done for OS400, which doesn't use
+ "/"-delimited directories, nor does it support directory
+ hierarchies. "CWD foo" followed by "CWD bar" leaves us
+ in "bar", not in "foo/bar", as would be customary
+ elsewhere. */
+
+ /* 2004-09-20 SMS.
+ Why is this wise even on UNIX? It certainly fouls VMS.
+ See below for a more reliable, more universal method.
+ */
+
+ /* 2008-04-22 MJC.
+ I'm not crazy about it either. I'm informed it's useful
+ for misconfigured servers that have some dirs in the path
+ with +x but -r, but this method is not RFC-conformant. I
+ understand the need to deal with crappy server
+ configurations, but it's far better to use the canonical
+ method first, and fall back to kludges second.
+ */
+
+ if (target[0] != '/'
+ && !(con->rs != ST_UNIX
+ && c_isalpha (target[0])
+ && target[1] == ':')
+ && (con->rs != ST_OS400)
+ && (con->rs != ST_VMS))
+ {
+ char *ntarget, *p;
+ size_t idlen = strlen (con->id);
+ size_t len;
+
+ /* Strip trailing slash(es) from con->id. */
+ while (idlen > 0 && con->id[idlen - 1] == '/')
+ --idlen;
+
+ len = idlen + 1 + strlen (target);
+ if (len < sizeof (targetbuf))
+ p = ntarget = targetbuf;
+ else
+ p = ntarget = xmalloc (len + 1);
+
+ memcpy (p, con->id, idlen);
+ p += idlen;
+ *p++ = '/';
+ strcpy (p, target);
+
+ DEBUGP (("Prepended initial PWD to relative path:\n"));
+ DEBUGP ((" pwd: '%s'\n old: '%s'\n new: '%s'\n",
+ con->id, target, ntarget));
+ target = ntarget;
+ }
+
+#if 0
+ /* 2004-09-17 SMS.
+ Don't help me out. Please.
+ A reasonably recent VMS FTP server will cope just fine with
+ UNIX file specifications. This code just spoils things.
+ Discarding the device name, for example, is not a wise
+ move.
+ This code was disabled but left in as an example of what
+ not to do.
+ */
+
+ /* If the FTP host runs VMS, we will have to convert the absolute
+ directory path in UNIX notation to absolute directory path in
+ VMS notation as VMS FTP servers do not like UNIX notation of
+ absolute paths. "VMS notation" is [dir.subdir.subsubdir]. */
+
+ if (con->rs == ST_VMS)
+ {
+ char *tmpp;
+ char *ntarget = (char *)alloca (strlen (target) + 2);
+ /* We use a converted initial dir, so directories in
+ TARGET will be separated with slashes, something like
+ "/INITIAL/FOLDER/DIR/SUBDIR". Convert that to
+ "[INITIAL.FOLDER.DIR.SUBDIR]". */
+ strcpy (ntarget, target);
+ assert (*ntarget == '/');
+ *ntarget = '[';
+ for (tmpp = ntarget + 1; *tmpp; tmpp++)
+ if (*tmpp == '/')
+ *tmpp = '.';
+ *tmpp++ = ']';
+ *tmpp = '\0';
+ DEBUGP (("Changed file name to VMS syntax:\n"));
+ DEBUGP ((" Unix: '%s'\n VMS: '%s'\n", target, ntarget));
+ target = ntarget;
+ }
+#endif /* 0 */
+
+ /* 2004-09-20 SMS.
+ A relative directory is relative to the initial directory.
+ Thus, what _is_ useful on VMS (and probably elsewhere) is
+ to CWD to the initial directory (ideally, whatever the
+ server reports, _exactly_, NOT badly UNIX-ixed), and then
+ CWD to the (new) relative directory. This should probably
+ be restructured as a function, called once or twice, but
+ I'm lazy enough to take the badly indented loop short-cut
+ for now.
+ */
+
+ /* Decide on one pass (absolute) or two (relative).
+ The VMS restriction may be relaxed when the squirrely code
+ above is reformed.
+ */
+ if ((con->rs == ST_VMS) && (target[0] != '/'))
+ {
+ cwd_start = 0;
+ DEBUGP (("Using two-step CWD for relative path.\n"));
+ }
+ else
+ {
+ /* Go straight to the target. */
+ cwd_start = 1;
+ }
+
+ /* At least one VMS FTP server (TCPware V5.6-2) can switch to
+ a UNIX emulation mode when given a UNIX-like directory
+ specification (like "a/b/c"). If allowed to continue this
+ way, LIST interpretation will be confused, because the
+ system type (SYST response) will not be re-checked, and
+ future UNIX-format directory listings (for multiple URLs or
+ "-r") will be horribly misinterpreted.
+
+ The cheap and nasty work-around is to do a "CWD []" after a
+ UNIX-like directory specification is used. (A single-level
+ directory is harmless.) This puts the TCPware server back
+ into VMS mode, and does no harm on other servers.
+
+ Unlike the rest of this block, this particular behavior
+ _is_ VMS-specific, so it gets its own VMS test.
+ */
+ if ((con->rs == ST_VMS) && (strchr (target, '/') != NULL))
+ {
+ cwd_end = 3;
+ DEBUGP (("Using extra \"CWD []\" step for VMS server.\n"));
+ }
+ else
+ {
+ cwd_end = 2;
+ }
+
+ /* 2004-09-20 SMS. */
+ /* Sorry about the deviant indenting. Laziness. */
+
+ for (cwd_count = cwd_start; cwd_count < cwd_end; cwd_count++)
+ {
+ switch (cwd_count)
+ {
+ case 0:
+ /* Step one (optional): Go to the initial directory,
+ exactly as reported by the server.
+ */
+ targ = con->id;
+ break;
+
+ case 1:
+ /* Step two: Go to the target directory. (Absolute or
+ relative will work now.)
+ */
+ targ = target;
+ break;
+
+ case 2:
+ /* Step three (optional): "CWD []" to restore server
+ VMS-ness.
+ */
+ targ = "[]";
+ break;
+
+ default:
+ logprintf (LOG_ALWAYS, _("Logically impossible section reached in getftp()"));
+ logprintf (LOG_ALWAYS, _("cwd_count: %d\ncwd_start: %d\ncwd_end: %d\n"),
+ cwd_count, cwd_start, cwd_end);
+ abort ();
+ }
+
+ if (!opt.server_response)
+ logprintf (LOG_VERBOSE, "==> CWD (%d) %s ... ", cwd_count,
+ quotearg_style (escape_quoting_style, target));
+
+ err = ftp_cwd (csock, targ);
+
+ /* FTPRERR, WRITEFAILED, FTPNSFOD */
+ switch (err)
+ {
+ case FTPRERR:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET, _("\
+Error in server response, closing control connection.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ return err;
+ case WRITEFAILED:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET,
+ _("Write failed, closing control connection.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ return err;
+ case FTPNSFOD:
+ logputs (LOG_VERBOSE, "\n");
+ logprintf (LOG_NOTQUIET, _("No such directory %s.\n\n"),
+ quote (u->dir));
+ fd_close (csock);
+ con->csock = -1;
+ return err;
+ case FTPOK:
+ break;
+ default:
+ abort ();
+ }
+
+ if (!opt.server_response)
+ logputs (LOG_VERBOSE, _("done.\n"));
+
+ } /* for */
+
+ /* 2004-09-20 SMS. */
+
+ if (target != targetbuf)
+ xfree (target);
+
+ } /* else */
+ }
+ else /* do not CWD */
+ logputs (LOG_VERBOSE, _("==> CWD not required.\n"));
+
+ if ((cmd & DO_RETR) && passed_expected_bytes == 0)
+ {
+ if (opt.verbose)
+ {
+ if (!opt.server_response)
+ logprintf (LOG_VERBOSE, "==> SIZE %s ... ",
+ quotearg_style (escape_quoting_style, u->file));
+ }
+
+ err = ftp_size (csock, u->file, &expected_bytes);
+ /* FTPRERR */
+ switch (err)
+ {
+ case FTPRERR:
+ case FTPSRVERR:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET, _("\
+Error in server response, closing control connection.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ return err;
+ case FTPOK:
+ got_expected_bytes = true;
+ /* Everything is OK. */
+ break;
+ default:
+ abort ();
+ }
+ if (!opt.server_response)
+ {
+ logprintf (LOG_VERBOSE, "%s\n",
+ expected_bytes ?
+ number_to_static_string (expected_bytes) :
+ _("done.\n"));
+ }
+ }
+
+ if (cmd & DO_RETR && restval > 0 && restval == expected_bytes)
+ {
+ /* Server confirms that file has length restval. We should stop now.
+ Some servers (f.e. NcFTPd) return error when receive REST 0 */
+ logputs (LOG_VERBOSE, _("File has already been retrieved.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ return RETRFINISHED;
+ }
+
+ do
+ {
+ try_again = false;
+ /* If anything is to be retrieved, PORT (or PASV) must be sent. */
+ if (cmd & (DO_LIST | DO_RETR))
+ {
+ if (opt.ftp_pasv)
+ {
+ ip_address passive_addr;
+ int passive_port;
+ err = ftp_do_pasv (csock, &passive_addr, &passive_port);
+ /* FTPRERR, WRITEFAILED, FTPNOPASV, FTPINVPASV */
+ switch (err)
+ {
+ case FTPRERR:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET, _("\
+Error in server response, closing control connection.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ return err;
+ case WRITEFAILED:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET,
+ _("Write failed, closing control connection.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ return err;
+ case FTPNOPASV:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET, _("Cannot initiate PASV transfer.\n"));
+ break;
+ case FTPINVPASV:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET, _("Cannot parse PASV response.\n"));
+ break;
+ case FTPOK:
+ break;
+ default:
+ abort ();
+ } /* switch (err) */
+ if (err==FTPOK)
+ {
+ DEBUGP (("trying to connect to %s port %d\n",
+ print_address (&passive_addr), passive_port));
+ dtsock = connect_to_ip (&passive_addr, passive_port, NULL);
+ if (dtsock < 0)
+ {
+ int save_errno = errno;
+ fd_close (csock);
+ con->csock = -1;
+ logprintf (LOG_VERBOSE, _("couldn't connect to %s port %d: %s\n"),
+ print_address (&passive_addr), passive_port,
+ strerror (save_errno));
+ return (retryable_socket_connect_error (save_errno)
+ ? CONERROR : CONIMPOSSIBLE);
+ }
+
+ if (!opt.server_response)
+ logputs (LOG_VERBOSE, _("done. "));
+ }
+ else
+ return err;
+
+ /*
+ * We do not want to fall back from PASSIVE mode to ACTIVE mode !
+ * The reason is the PORT command exposes the client's real IP address
+ * to the server. Bad for someone who relies on privacy via a ftp proxy.
+ */
+ }
+ else
+ {
+ err = ftp_do_port (csock, &local_sock);
+ /* FTPRERR, WRITEFAILED, bindport (FTPSYSERR), HOSTERR,
+ FTPPORTERR */
+ switch (err)
+ {
+ case FTPRERR:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET, _("\
+Error in server response, closing control connection.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ fd_close (dtsock);
+ fd_close (local_sock);
+ return err;
+ case WRITEFAILED:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET,
+ _("Write failed, closing control connection.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ fd_close (dtsock);
+ fd_close (local_sock);
+ return err;
+ case CONSOCKERR:
+ logputs (LOG_VERBOSE, "\n");
+ logprintf (LOG_NOTQUIET, "socket: %s\n", strerror (errno));
+ fd_close (csock);
+ con->csock = -1;
+ fd_close (dtsock);
+ fd_close (local_sock);
+ return err;
+ case FTPSYSERR:
+ logputs (LOG_VERBOSE, "\n");
+ logprintf (LOG_NOTQUIET, _("Bind error (%s).\n"),
+ strerror (errno));
+ fd_close (dtsock);
+ return err;
+ case FTPPORTERR:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET, _("Invalid PORT.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ fd_close (dtsock);
+ fd_close (local_sock);
+ return err;
+ case FTPOK:
+ break;
+ default:
+ abort ();
+ } /* port switch */
+ if (!opt.server_response)
+ logputs (LOG_VERBOSE, _("done. "));
+ } /* dtsock == -1 */
+ } /* cmd & (DO_LIST | DO_RETR) */
+
+ /* Restart if needed. */
+ if (restval && (cmd & DO_RETR))
+ {
+ if (!opt.server_response)
+ logprintf (LOG_VERBOSE, "==> REST %s ... ",
+ number_to_static_string (restval));
+ err = ftp_rest (csock, restval);
+
+ /* FTPRERR, WRITEFAILED, FTPRESTFAIL */
+ switch (err)
+ {
+ case FTPRERR:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET, _("\
+Error in server response, closing control connection.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ fd_close (dtsock);
+ fd_close (local_sock);
+ return err;
+ case WRITEFAILED:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET,
+ _("Write failed, closing control connection.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ fd_close (dtsock);
+ fd_close (local_sock);
+ return err;
+ case FTPRESTFAIL:
+ logputs (LOG_VERBOSE, _("\nREST failed, starting from scratch.\n"));
+ rest_failed = true;
+ break;
+ case FTPOK:
+ break;
+ default:
+ abort ();
+ }
+ if (err != FTPRESTFAIL && !opt.server_response)
+ logputs (LOG_VERBOSE, _("done. "));
+ } /* restval && cmd & DO_RETR */
+
+ if (cmd & DO_RETR)
+ {
+ /* If we're in spider mode, don't really retrieve anything except
+ the directory listing and verify whether the given "file" exists. */
+ if (opt.spider)
+ {
+ bool exists = false;
+ bool all_exist = true;
+ struct fileinfo *f;
+ uerr_t _res = ftp_get_listing (u, original_url, con, &f);
+ /* Set the DO_RETR command flag again, because it gets unset when
+ calling ftp_get_listing() and would otherwise cause an assertion
+ failure earlier on when this function gets repeatedly called
+ (e.g., when recursing). */
+ con->cmd |= DO_RETR;
+ if (_res == RETROK)
+ {
+ while (f)
+ {
+ if (!strcmp (f->name, u->file))
+ {
+ exists = true;
+ break;
+ } else {
+ all_exist = false;
+ }
+ f = f->next;
+ }
+ if (exists)
+ {
+ logputs (LOG_VERBOSE, "\n");
+ logprintf (LOG_NOTQUIET, _("File %s exists.\n"),
+ quote (u->file));
+ }
+ else
+ {
+ logputs (LOG_VERBOSE, "\n");
+ logprintf (LOG_NOTQUIET, _("No such file %s.\n"),
+ quote (u->file));
+ }
+ }
+ fd_close (csock);
+ con->csock = -1;
+ fd_close (dtsock);
+ fd_close (local_sock);
+ if (all_exist) {
+ return RETRFINISHED;
+ } else {
+ return FTPNSFOD;
+ }
+ }
+
+ if (opt.verbose)
+ {
+ if (!opt.server_response)
+ {
+ if (restval)
+ logputs (LOG_VERBOSE, "\n");
+ logprintf (LOG_VERBOSE, "==> RETR %s ... ",
+ quotearg_style (escape_quoting_style, u->file));
+ }
+ }
+
+ err = ftp_retr (csock, u->file);
+ /* FTPRERR, WRITEFAILED, FTPNSFOD */
+ switch (err)
+ {
+ case FTPRERR:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET, _("\
+Error in server response, closing control connection.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ fd_close (dtsock);
+ fd_close (local_sock);
+ return err;
+ case WRITEFAILED:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET,
+ _("Write failed, closing control connection.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ fd_close (dtsock);
+ fd_close (local_sock);
+ return err;
+ case FTPNSFOD:
+ logputs (LOG_VERBOSE, "\n");
+ logprintf (LOG_NOTQUIET, _("No such file %s.\n\n"),
+ quote (u->file));
+ fd_close (dtsock);
+ fd_close (local_sock);
+ return err;
+ case FTPOK:
+ break;
+ default:
+ abort ();
+ }
+
+ if (!opt.server_response)
+ logputs (LOG_VERBOSE, _("done.\n"));
+
+ if (! got_expected_bytes)
+ expected_bytes = *last_expected_bytes;
+ } /* do retrieve */
+
+ if (cmd & DO_LIST)
+ {
+ if (!opt.server_response)
+ logputs (LOG_VERBOSE, "==> LIST ... ");
+ /* As Maciej W. Rozycki (macro@ds2.pg.gda.pl) says, `LIST'
+ without arguments is better than `LIST .'; confirmed by
+ RFC959. */
+ err = ftp_list (csock, NULL, con->st&AVOID_LIST_A, con->st&AVOID_LIST, &list_a_used);
+
+ /* FTPRERR, WRITEFAILED */
+ switch (err)
+ {
+ case FTPRERR:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET, _("\
+Error in server response, closing control connection.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ fd_close (dtsock);
+ fd_close (local_sock);
+ return err;
+ case WRITEFAILED:
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_NOTQUIET,
+ _("Write failed, closing control connection.\n"));
+ fd_close (csock);
+ con->csock = -1;
+ fd_close (dtsock);
+ fd_close (local_sock);
+ return err;
+ case FTPNSFOD:
+ logputs (LOG_VERBOSE, "\n");
+ logprintf (LOG_NOTQUIET, _("No such file or directory %s.\n\n"),
+ quote ("."));
+ fd_close (dtsock);
+ fd_close (local_sock);
+ return err;
+ case FTPOK:
+ break;
+ default:
+ abort ();
+ }
+ if (!opt.server_response)
+ logputs (LOG_VERBOSE, _("done.\n"));
+
+ if (! got_expected_bytes)
+ expected_bytes = *last_expected_bytes;
+ } /* cmd & DO_LIST */
+
+ if (!(cmd & (DO_LIST | DO_RETR)) || (opt.spider && !(cmd & DO_LIST)))
+ return RETRFINISHED;
+
+ /* Some FTP servers return the total length of file after REST
+ command, others just return the remaining size. */
+ if (passed_expected_bytes && restval && expected_bytes
+ && (expected_bytes == passed_expected_bytes - restval))
+ {
+ DEBUGP (("Lying FTP server found, adjusting.\n"));
+ expected_bytes = passed_expected_bytes;
+ }
+
+ /* If no transmission was required, then everything is OK. */
+ if (!opt.ftp_pasv) /* we are not using passive mode so we need
+ to accept */
+ {
+ /* Wait for the server to connect to the address we're waiting
+ at. */
+ dtsock = accept_connection (local_sock);
+ if (dtsock < 0)
+ {
+ logprintf (LOG_NOTQUIET, "accept: %s\n", strerror (errno));
+ return CONERROR;
+ }
+ }
+
+ /* Open the file -- if output_stream is set, use it instead. */
+
+ /* 2005-04-17 SMS.
+ Note that having the output_stream ("-O") file opened in main
+ (main.c) rather limits the ability in VMS to open the file
+ differently for ASCII versus binary FTP here. (Of course, doing it
+ there allows a open failure to be detected immediately, without first
+ connecting to the server.)
+ */
+ if (!output_stream || con->cmd & DO_LIST)
+ {
+/* On VMS, alter the name as required. */
+#ifdef __VMS
+ char *targ;
+
+ targ = ods_conform (con->target);
+ if (targ != con->target)
+ {
+ xfree (con->target);
+ con->target = targ;
+ }
+#endif /* def __VMS */
+
+ mkalldirs (con->target);
+ if (opt.backups)
+ rotate_backups (con->target);
+
+/* 2005-04-15 SMS.
+ For VMS, define common fopen() optional arguments, and a handy macro
+ for use as a variable "binary" flag.
+ Elsewhere, define a constant "binary" flag.
+ Isn't it nice to have distinct text and binary file types?
+*/
+/* 2011-09-30 SMS.
+ Added listing files to the set of non-"binary" (text, Stream_LF)
+ files. (Wget works either way, but other programs, like, say, text
+ editors, work better on listing files which have text attributes.)
+ Now we use "binary" attributes for a binary ("IMAGE") transfer,
+ unless "--ftp-stmlf" was specified, and we always use non-"binary"
+ (text, Stream_LF) attributes for a listing file, or for an ASCII
+ transfer.
+ Tidied the VMS-specific BIN_TYPE_xxx macros, and changed the call to
+ fopen_excl() (restored?) to use BIN_TYPE_FILE instead of "true".
+*/
+#ifdef __VMS
+# define BIN_TYPE_TRANSFER (type_char != 'A')
+# define BIN_TYPE_FILE \
+ ((!(cmd & DO_LIST)) && BIN_TYPE_TRANSFER && (opt.ftp_stmlf == 0))
+# define FOPEN_OPT_ARGS "fop=sqo", "acc", acc_cb, &open_id
+# define FOPEN_OPT_ARGS_BIN "ctx=bin,stm", "rfm=fix", "mrs=512" FOPEN_OPT_ARGS
+#else /* def __VMS */
+# define BIN_TYPE_FILE true
+#endif /* def __VMS [else] */
+
+ if (restval && !(con->cmd & DO_LIST))
+ {
+#ifdef __VMS
+ int open_id;
+
+ if (BIN_TYPE_FILE)
+ {
+ open_id = 3;
+ fp = fopen (con->target, "ab", FOPEN_OPT_ARGS_BIN);
+ }
+ else
+ {
+ open_id = 4;
+ fp = fopen (con->target, "a", FOPEN_OPT_ARGS);
+ }
+#else /* def __VMS */
+ fp = fopen (con->target, "ab");
+#endif /* def __VMS [else] */
+ }
+ else if (opt.noclobber || opt.always_rest || opt.timestamping || opt.dirstruct
+ || opt.output_document || count > 0)
+ {
+ if (opt.unlink_requested && file_exists_p (con->target, NULL))
+ {
+ if (unlink (con->target) < 0)
+ {
+ logprintf (LOG_NOTQUIET, "%s: %s\n", con->target,
+ strerror (errno));
+ fd_close (csock);
+ con->csock = -1;
+ fd_close (dtsock);
+ fd_close (local_sock);
+ return UNLINKERR;
+ }
+ }
+
+#ifdef __VMS
+ int open_id;
+
+ if (BIN_TYPE_FILE)
+ {
+ open_id = 5;
+ fp = fopen (con->target, "wb", FOPEN_OPT_ARGS_BIN);
+ }
+ else
+ {
+ open_id = 6;
+ fp = fopen (con->target, "w", FOPEN_OPT_ARGS);
+ }
+#else /* def __VMS */
+ fp = fopen (con->target, "wb");
+#endif /* def __VMS [else] */
+ }
+ else
+ {
+ fp = fopen_excl (con->target, BIN_TYPE_FILE);
+ if (!fp && errno == EEXIST)
+ {
+ /* We cannot just invent a new name and use it (which is
+ what functions like unique_create typically do)
+ because we told the user we'd use this name.
+ Instead, return and retry the download. */
+ logprintf (LOG_NOTQUIET, _("%s has sprung into existence.\n"),
+ con->target);
+ fd_close (csock);
+ con->csock = -1;
+ fd_close (dtsock);
+ fd_close (local_sock);
+ return FOPEN_EXCL_ERR;
+ }
+ }
+ if (!fp)
+ {
+ logprintf (LOG_NOTQUIET, "%s: %s\n", con->target, strerror (errno));
+ fd_close (csock);
+ con->csock = -1;
+ fd_close (dtsock);
+ fd_close (local_sock);
+ return FOPENERR;
+ }
+ }
+ else
+ fp = output_stream;
+
+ if (passed_expected_bytes)
+ {
+ print_length (passed_expected_bytes, restval, true);
+ expected_bytes = passed_expected_bytes;
+ /* for fd_read_body's progress bar */
+ }
+ else if (expected_bytes)
+ print_length (expected_bytes, restval, false);
+
+#ifdef HAVE_SSL
+ if (u->scheme == SCHEME_FTPS && using_data_security)
+ {
+ /* We should try to restore the existing SSL session in the data connection
+ * and fall back to establishing a new session if the server doesn't want to restore it.
+ */
+ if (!opt.ftps_resume_ssl || !ssl_connect_wget (dtsock, u->host, &csock))
+ {
+ if (opt.ftps_resume_ssl)
+ logputs (LOG_NOTQUIET, "Server does not want to resume the SSL session. Trying with a new one.\n");
+ if (!ssl_connect_wget (dtsock, u->host, NULL))
+ {
+ fd_close (csock);
+ fd_close (dtsock);
+ err = CONERROR;
+ logputs (LOG_NOTQUIET, "Could not perform SSL handshake.\n");
+ goto exit_error;
+ }
+ }
+ else
+ logputs (LOG_NOTQUIET, "Resuming SSL session in data connection.\n");
+
+ if (!ssl_check_certificate (dtsock, u->host))
+ {
+ fd_close (csock);
+ fd_close (dtsock);
+ err = CONERROR;
+ goto exit_error;
+ }
+ }
+#endif
+
+ /* Get the contents of the document. */
+ flags = 0;
+ if (restval && rest_failed)
+ flags |= rb_skip_startpos;
+ rd_size = 0;
+ res = fd_read_body (con->target, dtsock, fp,
+ expected_bytes ? expected_bytes - restval : 0,
+ restval, &rd_size, qtyread, &con->dltime, flags, warc_tmp);
+
+ tms = datetime_str (time (NULL));
+ tmrate = retr_rate (rd_size, con->dltime);
+ total_download_time += con->dltime;
+
+#ifdef ENABLE_XATTR
+ if (opt.enable_xattr)
+ set_file_metadata (u, NULL, fp);
+#endif
+
+ fd_close (local_sock);
+ /* Close the local file. */
+ if (!output_stream || con->cmd & DO_LIST)
+ fclose (fp);
+
+ /* If fd_read_body couldn't write to fp or warc_tmp, bail out. */
+ if (res == -2 || (warc_tmp != NULL && res == -3))
+ {
+ logprintf (LOG_NOTQUIET, _("%s: %s, closing control connection.\n"),
+ con->target, strerror (errno));
+ fd_close (csock);
+ con->csock = -1;
+ fd_close (dtsock);
+ if (res == -2)
+ return FWRITEERR;
+ else if (res == -3)
+ return WARC_TMP_FWRITEERR;
+ }
+ else if (res == -1)
+ {
+ logprintf (LOG_NOTQUIET, _("%s (%s) - Data connection: %s; "),
+ tms, tmrate, fd_errstr (dtsock));
+ if (opt.server_response)
+ logputs (LOG_ALWAYS, "\n");
+ }
+ fd_close (dtsock);
+
+ /* Get the server to tell us if everything is retrieved. */
+ err = ftp_response (csock, &respline);
+ if (err != FTPOK)
+ {
+ /* The control connection is decidedly closed. Print the time
+ only if it hasn't already been printed. */
+ if (res != -1)
+ logprintf (LOG_NOTQUIET, "%s (%s) - ", tms, tmrate);
+ logputs (LOG_NOTQUIET, _("Control connection closed.\n"));
+ /* If there is an error on the control connection, close it, but
+ return FTPRETRINT, since there is a possibility that the
+ whole file was retrieved nevertheless (but that is for
+ ftp_loop_internal to decide). */
+ fd_close (csock);
+ con->csock = -1;
+ return FTPRETRINT;
+ } /* err != FTPOK */
+ *last_expected_bytes = ftp_expected_bytes (respline);
+ /* If retrieval failed for any reason, return FTPRETRINT, but do not
+ close socket, since the control connection is still alive. If
+ there is something wrong with the control connection, it will
+ become apparent later. */
+ if (*respline != '2')
+ {
+ if (res != -1)
+ logprintf (LOG_NOTQUIET, "%s (%s) - ", tms, tmrate);
+ logputs (LOG_NOTQUIET, _("Data transfer aborted.\n"));
+#ifdef HAVE_SSL
+ if (!c_strncasecmp (respline, "425", 3) && u->scheme == SCHEME_FTPS)
+ {
+ logputs (LOG_NOTQUIET, "FTPS server rejects new SSL sessions in the data connection.\n");
+ xfree (respline);
+ return FTPRESTFAIL;
+ }
+#endif
+ xfree (respline);
+ return FTPRETRINT;
+ }
+ xfree (respline);
+
+ if (res == -1)
+ {
+ /* What now? The data connection was erroneous, whereas the
+ response says everything is OK. We shall play it safe. */
+ return FTPRETRINT;
+ }
+
+ if (!(cmd & LEAVE_PENDING))
+ {
+ /* Closing the socket is faster than sending 'QUIT' and the
+ effect is the same. */
+ fd_close (csock);
+ con->csock = -1;
+ }
+ /* If it was a listing, and opt.server_response is true,
+ print it out. */
+ if (con->cmd & DO_LIST)
+ {
+ if (opt.server_response)
+ {
+/* 2005-02-25 SMS.
+ Much of this work may already have been done, but repeating it should
+ do no damage beyond wasting time.
+*/
+/* On VMS, alter the name as required. */
+#ifdef __VMS
+ char *targ;
+
+ targ = ods_conform (con->target);
+ if (targ != con->target)
+ {
+ xfree (con->target);
+ con->target = targ;
+ }
+#endif /* def __VMS */
+
+ mkalldirs (con->target);
+ fp = fopen (con->target, "r");
+ if (!fp)
+ logprintf (LOG_ALWAYS, "%s: %s\n", con->target, strerror (errno));
+ else
+ {
+ char *line = NULL;
+ size_t bufsize = 0;
+ ssize_t len;
+
+ /* The lines are being read with getline because of
+ no-buffering on opt.lfile. */
+ while ((len = getline (&line, &bufsize, fp)) > 0)
+ {
+ while (len > 0 && (line[len - 1] == '\n' || line[len - 1] == '\r'))
+ line[--len] = '\0';
+ logprintf (LOG_ALWAYS, "%s\n",
+ quotearg_style (escape_quoting_style, line));
+ }
+ xfree (line);
+ fclose (fp);
+ }
+ } /* server_response */
+
+ /* 2013-10-17 Andrea Urbani (matfanjol)
+ < __LIST_A_EXPLANATION__ >
+ After the SYST command, looks if it knows that system.
+ If yes, wget will force the use of "LIST" or "LIST -a".
+ If no, wget will try, only the first time of each session, before the
+ "LIST -a" command and after the "LIST".
+ If "LIST -a" works and returns more or equal data of the "LIST",
+ "LIST -a" will be the standard list command for all the session.
+ If "LIST -a" fails or returns less data than "LIST" (think on the case
+ of an existing file called "-a"), "LIST" will be the standard list
+ command for all the session.
+ ("LIST -a" is used to get also the hidden files)
+
+ */
+ if (!(con->st & LIST_AFTER_LIST_A_CHECK_DONE))
+ {
+ /* We still have to check "LIST" after the first "LIST -a" to see
+ if with "LIST" we get more data than "LIST -a", that means
+ "LIST -a" returned files/folders with "-a" name. */
+ if (con->st & AVOID_LIST_A)
+ {
+ /* LIST was used in this cycle.
+ Let's see the result. */
+ if (rd_size > previous_rd_size)
+ {
+ /* LIST returns more data than "LIST -a".
+ "LIST" is the official command to use. */
+ con->st |= LIST_AFTER_LIST_A_CHECK_DONE;
+ DEBUGP (("LIST returned more data than \"LIST -a\": "
+ "I will use \"LIST\" as standard list command\n"));
+ }
+ else if (previous_rd_size > rd_size)
+ {
+ /* "LIST -a" returned more data then LIST.
+ "LIST -a" is the official command to use. */
+ con->st |= LIST_AFTER_LIST_A_CHECK_DONE;
+ con->st |= AVOID_LIST;
+ con->st &= ~AVOID_LIST_A;
+ /* Sorry, please, download again the "LIST -a"... */
+ try_again = true;
+ DEBUGP (("LIST returned less data than \"LIST -a\": I will "
+ "use \"LIST -a\" as standard list command\n"));
+ }
+ else
+ {
+ /* LIST and "LIST -a" return the same data. */
+ if (rd_size == 0)
+ {
+ /* Same empty data. We will check both again because
+ we cannot check if "LIST -a" has returned an empty
+ folder instead of a folder content. */
+ con->st &= ~AVOID_LIST_A;
+ }
+ else
+ {
+ /* Same data, so, better to take "LIST -a" that
+ shows also hidden files/folders (when present) */
+ con->st |= LIST_AFTER_LIST_A_CHECK_DONE;
+ con->st |= AVOID_LIST;
+ con->st &= ~AVOID_LIST_A;
+ DEBUGP (("LIST returned the same amount of data of "
+ "\"LIST -a\": I will use \"LIST -a\" as standard "
+ "list command\n"));
+ }
+ }
+ }
+ else
+ {
+ /* In this cycle "LIST -a" should being used. Is it true? */
+ if (list_a_used)
+ {
+ /* Yes, it is.
+ OK, let's save the amount of data and try again
+ with LIST */
+ previous_rd_size = rd_size;
+ try_again = true;
+ con->st |= AVOID_LIST_A;
+ }
+ else
+ {
+ /* No: something happens and LIST was used.
+ This means "LIST -a" raises an error. */
+ con->st |= LIST_AFTER_LIST_A_CHECK_DONE;
+ con->st |= AVOID_LIST_A;
+ DEBUGP (("\"LIST -a\" failed: I will use \"LIST\" "
+ "as standard list command\n"));
+ }
+ }
+ }
+ }
+ } while (try_again);
+ return RETRFINISHED;
+
+exit_error:
+
+ /* If fp is a regular file, close and try to remove it */
+ if (fp && (!output_stream || con->cmd & DO_LIST))
+ fclose (fp);
+ return err;
+}
+
+/* A one-file FTP loop. This is the part where FTP retrieval is
+ retried, and retried, and retried, and...
+
+ This loop either gets commands from con, or (if ON_YOUR_OWN is
+ set), makes them up to retrieve the file given by the URL. */
+static uerr_t
+ftp_loop_internal (struct url *u, struct url *original_url, struct fileinfo *f,
+ ccon *con, char **local_file, bool force_full_retrieve)
+{
+ int count, orig_lp;
+ wgint restval, len = 0, qtyread = 0;
+ char *tms, *locf;
+ const char *tmrate = NULL;
+ uerr_t err;
+ struct stat st;
+
+ /* Declare WARC variables. */
+ bool warc_enabled = (opt.warc_filename != NULL);
+ FILE *warc_tmp = NULL;
+ ip_address warc_ip_buf, *warc_ip = NULL;
+ wgint last_expected_bytes = 0;
+
+ /* Get the target, and set the name for the message accordingly. */
+ if ((f == NULL) && (con->target))
+ {
+ /* Explicit file (like ".listing"). */
+ locf = con->target;
+ }
+ else
+ {
+ /* URL-derived file. Consider "-O file" name. */
+ xfree (con->target);
+ con->target = url_file_name (opt.trustservernames || !original_url ? u : original_url, NULL);
+ if (!opt.output_document)
+ locf = con->target;
+ else
+ locf = opt.output_document;
+ }
+
+ /* If the output_document was given, then this check was already done and
+ the file didn't exist. Hence the !opt.output_document */
+
+ /* If we receive .listing file it is necessary to determine system type of the ftp
+ server even if opn.noclobber is given. Thus we must ignore opt.noclobber in
+ order to establish connection with the server and get system type. */
+ if (opt.noclobber && !opt.output_document && file_exists_p (con->target, NULL)
+ && !((con->cmd & DO_LIST) && !(con->cmd & DO_RETR)))
+ {
+ logprintf (LOG_VERBOSE,
+ _("File %s already there; not retrieving.\n"), quote (con->target));
+ /* If the file is there, we suppose it's retrieved OK. */
+ return RETROK;
+ }
+
+ /* Remove it if it's a link. */
+ remove_link (con->target);
+
+ count = 0;
+
+ if (con->st & ON_YOUR_OWN)
+ con->st = ON_YOUR_OWN;
+
+ orig_lp = con->cmd & LEAVE_PENDING ? 1 : 0;
+
+ /* THE loop. */
+ do
+ {
+ /* Increment the pass counter. */
+ ++count;
+ sleep_between_retrievals (count);
+ if (con->st & ON_YOUR_OWN)
+ {
+ con->cmd = 0;
+ con->cmd |= (DO_RETR | LEAVE_PENDING);
+ if (con->csock != -1)
+ con->cmd &= ~ (DO_LOGIN | DO_CWD);
+ else
+ con->cmd |= (DO_LOGIN | DO_CWD);
+ }
+ else /* not on your own */
+ {
+ if (con->csock != -1)
+ con->cmd &= ~DO_LOGIN;
+ else
+ con->cmd |= DO_LOGIN;
+ if (con->st & DONE_CWD)
+ con->cmd &= ~DO_CWD;
+ else
+ con->cmd |= DO_CWD;
+ }
+
+ /* For file RETR requests, we can write a WARC record.
+ We record the file contents to a temporary file. */
+ if (warc_enabled && (con->cmd & DO_RETR) && warc_tmp == NULL)
+ {
+ warc_tmp = warc_tempfile ();
+ if (warc_tmp == NULL)
+ return WARC_TMP_FOPENERR;
+
+ if (!con->proxy && con->csock != -1)
+ {
+ warc_ip = &warc_ip_buf;
+ socket_ip_address (con->csock, warc_ip, ENDPOINT_PEER);
+ }
+ }
+
+ /* Decide whether or not to restart. */
+ if (con->cmd & DO_LIST)
+ restval = 0;
+ else if (force_full_retrieve)
+ restval = 0;
+ else if (opt.start_pos >= 0)
+ restval = opt.start_pos;
+ else if (opt.always_rest
+ && stat (locf, &st) == 0
+ && S_ISREG (st.st_mode))
+ /* When -c is used, continue from on-disk size. (Can't use
+ hstat.len even if count>1 because we don't want a failed
+ first attempt to clobber existing data.) */
+ restval = st.st_size;
+ else if (count > 1)
+ restval = qtyread; /* start where the previous run left off */
+ else
+ restval = 0;
+
+ /* Get the current time string. */
+ tms = datetime_str (time (NULL));
+ /* Print fetch message, if opt.verbose. */
+ if (opt.verbose)
+ {
+ char *hurl = url_string (u, URL_AUTH_HIDE_PASSWD);
+ char tmp[256];
+ strcpy (tmp, " ");
+ if (count > 1)
+ sprintf (tmp, _("(try:%2d)"), count);
+ logprintf (LOG_VERBOSE, "--%s-- %s\n %s => %s\n",
+ tms, hurl, tmp, quote (locf));
+#ifdef WINDOWS
+ ws_changetitle (hurl);
+#endif
+ xfree (hurl);
+ }
+ /* Send getftp the proper length, if fileinfo was provided. */
+ if (f && f->type != FT_SYMLINK)
+ len = f->size;
+ else
+ len = 0;
+
+ /* If we are working on a WARC record, getftp should also write
+ to the warc_tmp file. */
+ err = getftp (u, original_url, len, &qtyread, restval, con, count,
+ &last_expected_bytes, warc_tmp);
+
+ if (con->csock == -1)
+ con->st &= ~DONE_CWD;
+ else
+ con->st |= DONE_CWD;
+
+ switch (err)
+ {
+ case HOSTERR: case CONIMPOSSIBLE: case FWRITEERR: case FOPENERR:
+ case FTPNSFOD: case FTPLOGINC: case FTPNOPASV: case FTPNOAUTH: case FTPNOPBSZ: case FTPNOPROT:
+ case UNLINKERR: case WARC_TMP_FWRITEERR: case CONSSLERR: case CONTNOTSUPPORTED:
+ case VERIFCERTERR:
+#ifdef HAVE_SSL
+ if (err == FTPNOAUTH)
+ logputs (LOG_NOTQUIET, "Server does not support AUTH TLS.\n");
+ if (opt.ftps_implicit)
+ logputs (LOG_NOTQUIET, "Server does not like implicit FTPS connections.\n");
+#endif
+ /* Fatal errors, give up. */
+ if (warc_tmp != NULL)
+ {
+ fclose (warc_tmp);
+ warc_tmp = NULL;
+ }
+ return err;
+ case CONSOCKERR: case CONERROR: case FTPSRVERR: case FTPRERR:
+ case WRITEFAILED: case FTPUNKNOWNTYPE: case FTPSYSERR:
+ case FTPPORTERR: case FTPLOGREFUSED: case FTPINVPASV:
+ case FOPEN_EXCL_ERR:
+ printwhat (count, opt.ntry);
+ /* non-fatal errors */
+ if (err == FOPEN_EXCL_ERR)
+ {
+ /* Re-determine the file name. */
+ xfree (con->target);
+ con->target = url_file_name (u, NULL);
+ locf = con->target;
+ }
+ continue;
+ case FTPRETRINT:
+ /* If the control connection was closed, the retrieval
+ will be considered OK if f->size == len. */
+ if (!f || qtyread != f->size)
+ {
+ printwhat (count, opt.ntry);
+ continue;
+ }
+ break;
+ case RETRFINISHED:
+ /* Great! */
+ break;
+ default:
+ /* Not as great. */
+ abort ();
+ }
+ tms = datetime_str (time (NULL));
+ if (!opt.spider)
+ tmrate = retr_rate (qtyread - restval, con->dltime);
+
+ /* If we get out of the switch above without continue'ing, we've
+ successfully downloaded a file. Remember this fact. */
+ downloaded_file (FILE_DOWNLOADED_NORMALLY, locf);
+
+ if (con->st & ON_YOUR_OWN)
+ {
+ fd_close (con->csock);
+ con->csock = -1;
+ }
+ if (!opt.spider)
+ {
+ bool write_to_stdout = (opt.output_document && HYPHENP (opt.output_document));
+
+ logprintf (LOG_VERBOSE,
+ write_to_stdout
+ ? _("%s (%s) - written to stdout %s[%s]\n\n")
+ : _("%s (%s) - %s saved [%s]\n\n"),
+ tms, tmrate,
+ write_to_stdout ? "" : quote (locf),
+ number_to_static_string (qtyread));
+ }
+ if (!opt.verbose && !opt.quiet)
+ {
+ /* Need to hide the password from the URL. The `if' is here
+ so that we don't do the needless allocation every
+ time. */
+ char *hurl = url_string (u, URL_AUTH_HIDE_PASSWD);
+ logprintf (LOG_NONVERBOSE, "%s URL: %s [%s] -> \"%s\" [%d]\n",
+ tms, hurl, number_to_static_string (qtyread), locf, count);
+ xfree (hurl);
+ }
+
+ if (warc_enabled && (con->cmd & DO_RETR))
+ {
+ /* Create and store a WARC resource record for the retrieved file. */
+ bool warc_res;
+
+ warc_res = warc_write_resource_record (NULL, u->url, NULL, NULL,
+ warc_ip, NULL, warc_tmp, -1);
+
+ if (! warc_res)
+ return WARC_ERR;
+
+ /* warc_write_resource_record has also closed warc_tmp. */
+ warc_tmp = NULL;
+ }
+
+ if (con->cmd & DO_LIST)
+ /* This is a directory listing file. */
+ {
+ if (!opt.remove_listing)
+ /* --dont-remove-listing was specified, so do count this towards the
+ number of bytes and files downloaded. */
+ {
+ total_downloaded_bytes += qtyread;
+ numurls++;
+ }
+
+ /* Deletion of listing files is not controlled by --delete-after, but
+ by the more specific option --dont-remove-listing, and the code
+ to do this deletion is in another function. */
+ }
+ else if (!opt.spider)
+ /* This is not a directory listing file. */
+ {
+ /* Unlike directory listing files, don't pretend normal files weren't
+ downloaded if they're going to be deleted. People seeding proxies,
+ for instance, may want to know how many bytes and files they've
+ downloaded through it. */
+ total_downloaded_bytes += qtyread;
+ numurls++;
+
+ if (opt.delete_after && !input_file_url (opt.input_filename))
+ {
+ DEBUGP (("\
+Removing file due to --delete-after in ftp_loop_internal():\n"));
+ logprintf (LOG_VERBOSE, _("Removing %s.\n"), locf);
+ if (unlink (locf))
+ logprintf (LOG_NOTQUIET, "unlink: %s\n", strerror (errno));
+ }
+ }
+
+ /* Restore the original leave-pendingness. */
+ if (orig_lp)
+ con->cmd |= LEAVE_PENDING;
+ else
+ con->cmd &= ~LEAVE_PENDING;
+
+ if (local_file)
+ *local_file = xstrdup (locf);
+
+ if (warc_tmp != NULL)
+ {
+ fclose (warc_tmp);
+ warc_tmp = NULL;
+ }
+
+ return RETROK;
+ } while (!opt.ntry || (count < opt.ntry));
+
+ if (con->csock != -1 && (con->st & ON_YOUR_OWN))
+ {
+ fd_close (con->csock);
+ con->csock = -1;
+ }
+
+ if (warc_tmp != NULL)
+ fclose (warc_tmp);
+
+ return TRYLIMEXC;
+}
+
+/* Return the directory listing in a reusable format. The directory
+ is specified in u->dir. */
+static uerr_t
+ftp_get_listing (struct url *u, struct url *original_url, ccon *con,
+ struct fileinfo **f)
+{
+ uerr_t err;
+ char *uf; /* url file name */
+ char *lf; /* list file name */
+ char *old_target = con->target;
+
+ con->st &= ~ON_YOUR_OWN;
+ con->cmd |= (DO_LIST | LEAVE_PENDING);
+ con->cmd &= ~DO_RETR;
+
+ /* Find the listing file name. We do it by taking the file name of
+ the URL and replacing the last component with the listing file
+ name. */
+ uf = url_file_name (u, NULL);
+ lf = file_merge (uf, LIST_FILENAME);
+ xfree (uf);
+ DEBUGP ((_("Using %s as listing tmp file.\n"), quote (lf)));
+
+ con->target = xstrdup (lf);
+ xfree (lf);
+ err = ftp_loop_internal (u, original_url, NULL, con, NULL, false);
+ lf = xstrdup (con->target);
+ xfree (con->target);
+ con->target = old_target;
+
+ if (err == RETROK)
+ {
+ *f = ftp_parse_ls (lf, con->rs);
+ if (opt.remove_listing)
+ {
+ if (unlink (lf))
+ logprintf (LOG_NOTQUIET, "unlink: %s\n", strerror (errno));
+ else
+ logprintf (LOG_VERBOSE, _("Removed %s.\n"), quote (lf));
+ }
+ }
+ else
+ *f = NULL;
+ xfree (lf);
+ con->cmd &= ~DO_LIST;
+ return err;
+}
+
+static uerr_t ftp_retrieve_dirs (struct url *, struct url *,
+ struct fileinfo *, ccon *);
+static uerr_t ftp_retrieve_glob (struct url *, struct url *, ccon *, int);
+static struct fileinfo *delelement (struct fileinfo **, struct fileinfo **);
+
+/* Retrieve a list of files given in struct fileinfo linked list. If
+ a file is a symbolic link, do not retrieve it, but rather try to
+ set up a similar link on the local disk, if the symlinks are
+ supported.
+
+ If opt.recursive is set, after all files have been retrieved,
+ ftp_retrieve_dirs will be called to retrieve the directories. */
+static uerr_t
+ftp_retrieve_list (struct url *u, struct url *original_url,
+ struct fileinfo *f, ccon *con)
+{
+ static int depth = 0;
+ uerr_t err;
+ struct fileinfo *orig;
+ wgint local_size;
+ time_t tml;
+ bool dlthis; /* Download this (file). */
+ const char *actual_target = NULL;
+ bool force_full_retrieve = false;
+
+ /* Increase the depth. */
+ ++depth;
+ if (opt.reclevel != INFINITE_RECURSION && depth > opt.reclevel)
+ {
+ DEBUGP ((_("Recursion depth %d exceeded max. depth %d.\n"),
+ depth, opt.reclevel));
+ --depth;
+ return RECLEVELEXC;
+ }
+
+ assert (f != NULL);
+ orig = f;
+
+ con->st &= ~ON_YOUR_OWN;
+ if (!(con->st & DONE_CWD))
+ con->cmd |= DO_CWD;
+ else
+ con->cmd &= ~DO_CWD;
+ con->cmd |= (DO_RETR | LEAVE_PENDING);
+
+ if (con->csock < 0)
+ con->cmd |= DO_LOGIN;
+ else
+ con->cmd &= ~DO_LOGIN;
+
+ err = RETROK; /* in case it's not used */
+
+ while (f)
+ {
+ char *old_target, *ofile;
+
+ if (opt.quota && total_downloaded_bytes > opt.quota)
+ {
+ --depth;
+ return QUOTEXC;
+ }
+ old_target = con->target;
+
+ ofile = xstrdup (u->file);
+ url_set_file (u, f->name);
+
+ con->target = url_file_name (u, NULL);
+ err = RETROK;
+
+ dlthis = true;
+ if (opt.timestamping && f->type == FT_PLAINFILE)
+ {
+ struct stat st;
+ /* If conversion of HTML files retrieved via FTP is ever implemented,
+ we'll need to stat() <file>.orig here when -K has been specified.
+ I'm not implementing it now since files on an FTP server are much
+ more likely than files on an HTTP server to legitimately have a
+ .orig suffix. */
+ if (!stat (con->target, &st))
+ {
+ bool eq_size;
+ bool cor_val;
+ /* Else, get it from the file. */
+ local_size = st.st_size;
+ tml = st.st_mtime;
+#ifdef WINDOWS
+ /* Modification time granularity is 2 seconds for Windows, so
+ increase local time by 1 second for later comparison. */
+ tml++;
+#endif
+ /* Compare file sizes only for servers that tell us correct
+ values. Assume sizes being equal for servers that lie
+ about file size. */
+ cor_val = (con->rs == ST_UNIX || con->rs == ST_WINNT);
+ eq_size = cor_val ? (local_size == f->size) : true;
+ if (f->tstamp <= tml && eq_size)
+ {
+ /* Remote file is older, file sizes can be compared and
+ are both equal. */
+ logprintf (LOG_VERBOSE, _("\
+Remote file no newer than local file %s -- not retrieving.\n"), quote (con->target));
+ dlthis = false;
+ }
+ else if (f->tstamp > tml)
+ {
+ /* Remote file is newer */
+ force_full_retrieve = true;
+ logprintf (LOG_VERBOSE, _("\
+Remote file is newer than local file %s -- retrieving.\n\n"),
+ quote (con->target));
+ }
+ else
+ {
+ /* Sizes do not match */
+ logprintf (LOG_VERBOSE, _("\
+The sizes do not match (local %s) -- retrieving.\n\n"),
+ number_to_static_string (local_size));
+ }
+ }
+ } /* opt.timestamping && f->type == FT_PLAINFILE */
+ switch (f->type)
+ {
+ case FT_SYMLINK:
+ /* If opt.retr_symlinks is defined, we treat symlinks as
+ if they were normal files. There is currently no way
+ to distinguish whether they might be directories, and
+ follow them. */
+ if (!opt.retr_symlinks)
+ {
+#ifdef HAVE_SYMLINK
+ if (!f->linkto)
+ logputs (LOG_NOTQUIET,
+ _("Invalid name of the symlink, skipping.\n"));
+ else
+ {
+ struct stat st;
+ /* Check whether we already have the correct
+ symbolic link. */
+ int rc = lstat (con->target, &st);
+ if (rc == 0)
+ {
+ size_t len = strlen (f->linkto) + 1;
+ if (S_ISLNK (st.st_mode))
+ {
+ char buf[1024], *link_target;
+ size_t n;
+ bool res;
+
+ if (len < sizeof (buf))
+ link_target = buf;
+ else
+ link_target = xmalloc (len);
+
+ n = readlink (con->target, link_target, len);
+ res = (n == len - 1) && (memcmp (link_target, f->linkto, n) == 0);
+
+ if (link_target != buf)
+ xfree (link_target);
+
+ if (res)
+ {
+ logprintf (LOG_VERBOSE, _("\
+Already have correct symlink %s -> %s\n\n"),
+ quote (con->target),
+ quote (f->linkto));
+ dlthis = false;
+ break;
+ }
+ }
+ }
+ logprintf (LOG_VERBOSE, _("Creating symlink %s -> %s\n"),
+ quote (con->target), quote (f->linkto));
+ /* Unlink before creating symlink! */
+ unlink (con->target);
+ if (symlink (f->linkto, con->target) == -1)
+ logprintf (LOG_NOTQUIET, "symlink: %s\n", strerror (errno));
+ logputs (LOG_VERBOSE, "\n");
+ } /* have f->linkto */
+#else /* not HAVE_SYMLINK */
+ logprintf (LOG_NOTQUIET,
+ _("Symlinks not supported, skipping symlink %s.\n"),
+ quote (con->target));
+#endif /* not HAVE_SYMLINK */
+ }
+ else /* opt.retr_symlinks */
+ {
+ if (dlthis)
+ {
+ err = ftp_loop_internal (u, original_url, f, con, NULL,
+ force_full_retrieve);
+ }
+ } /* opt.retr_symlinks */
+ break;
+ case FT_DIRECTORY:
+ if (!opt.recursive)
+ logprintf (LOG_NOTQUIET, _("Skipping directory %s.\n"),
+ quote (f->name));
+ break;
+ case FT_PLAINFILE:
+ /* Call the retrieve loop. */
+ if (dlthis)
+ {
+ err = ftp_loop_internal (u, original_url, f, con, NULL,
+ force_full_retrieve);
+ }
+ break;
+ case FT_UNKNOWN:
+ default:
+ logprintf (LOG_NOTQUIET, _("%s: unknown/unsupported file type.\n"),
+ quote (f->name));
+ break;
+ } /* switch */
+
+
+ /* 2004-12-15 SMS.
+ * Set permissions _before_ setting the times, as setting the
+ * permissions changes the modified-time, at least on VMS.
+ * Also, use the opt.output_document name here, too, as
+ * appropriate. (Do the test once, and save the result.)
+ */
+
+ set_local_file (&actual_target, con->target);
+
+ /* If downloading a plain file, and the user requested it, then
+ set valid (non-zero) permissions. */
+ if (dlthis && (actual_target != NULL) &&
+ (f->type == FT_PLAINFILE) && opt.preserve_perm)
+ {
+ if (f->perms)
+ {
+ if (chmod (actual_target, f->perms))
+ logprintf (LOG_NOTQUIET,
+ _("Failed to set permissions for %s.\n"),
+ actual_target);
+ }
+ else
+ DEBUGP (("Unrecognized permissions for %s.\n", actual_target));
+ }
+
+ /* Set the time-stamp information to the local file. Symlinks
+ are not to be stamped because it sets the stamp on the
+ original. :( */
+ if (actual_target != NULL)
+ {
+ if (opt.useservertimestamps
+ && !(f->type == FT_SYMLINK && !opt.retr_symlinks)
+ && f->tstamp != -1
+ && dlthis
+ && file_exists_p (con->target, NULL))
+ {
+ touch (actual_target, f->tstamp);
+ }
+ else if (f->tstamp == -1)
+ logprintf (LOG_NOTQUIET, _("%s: corrupt time-stamp.\n"),
+ actual_target);
+ }
+
+ xfree (con->target);
+ con->target = old_target;
+
+ url_set_file (u, ofile);
+ xfree (ofile);
+
+ /* Break on fatals. */
+ if (err == QUOTEXC || err == HOSTERR || err == FWRITEERR
+ || err == WARC_ERR || err == WARC_TMP_FOPENERR
+ || err == WARC_TMP_FWRITEERR)
+ break;
+ con->cmd &= ~ (DO_CWD | DO_LOGIN);
+ f = f->next;
+ }
+
+ /* We do not want to call ftp_retrieve_dirs here */
+ if (opt.recursive &&
+ !(opt.reclevel != INFINITE_RECURSION && depth >= opt.reclevel))
+ err = ftp_retrieve_dirs (u, original_url, orig, con);
+ else if (opt.recursive)
+ DEBUGP ((_("Will not retrieve dirs since depth is %d (max %d).\n"),
+ depth, opt.reclevel));
+ --depth;
+ return err;
+}
+
+/* Retrieve the directories given in a file list. This function works
+ by simply going through the linked list and calling
+ ftp_retrieve_glob on each directory entry. The function knows
+ about excluded directories. */
+static uerr_t
+ftp_retrieve_dirs (struct url *u, struct url *original_url,
+ struct fileinfo *f, ccon *con)
+{
+ char buf[1024];
+ char *container = buf;
+ int container_size = sizeof (buf);
+
+ for (; f; f = f->next)
+ {
+ int size;
+ char *odir, *newdir;
+
+ if (opt.quota && total_downloaded_bytes > opt.quota)
+ break;
+ if (f->type != FT_DIRECTORY)
+ continue;
+
+ /* Allocate u->dir off stack, but reallocate only if a larger
+ string is needed. It's a pity there's no "realloca" for an
+ item on the bottom of the stack. */
+ size = strlen (u->dir) + 1 + strlen (f->name) + 1;
+ if (size > container_size)
+ {
+ if (container == buf)
+ container = xmalloc (size);
+ else
+ container = xrealloc (container, size);
+
+ container_size = size;
+ }
+ newdir = container;
+
+ odir = u->dir;
+ if (*odir == '\0'
+ || (*odir == '/' && *(odir + 1) == '\0'))
+ /* If ODIR is empty or just "/", simply append f->name to
+ ODIR. (In the former case, to preserve u->dir being
+ relative; in the latter case, to avoid double slash.) */
+ sprintf (newdir, "%s%s", odir, f->name);
+ else
+ /* Else, use a separator. */
+ sprintf (newdir, "%s/%s", odir, f->name);
+
+ DEBUGP (("Composing new CWD relative to the initial directory.\n"));
+ DEBUGP ((" odir = '%s'\n f->name = '%s'\n newdir = '%s'\n\n",
+ odir, f->name, newdir));
+ if (!accdir (newdir))
+ {
+ logprintf (LOG_VERBOSE, _("\
+Not descending to %s as it is excluded/not-included.\n"),
+ quote (newdir));
+ continue;
+ }
+
+ con->st &= ~DONE_CWD;
+
+ odir = xstrdup (u->dir); /* because url_set_dir will free
+ u->dir. */
+ url_set_dir (u, newdir);
+ ftp_retrieve_glob (u, original_url, con, GLOB_GETALL);
+ url_set_dir (u, odir);
+ xfree (odir);
+
+ /* Set the time-stamp? */
+ }
+
+ if (container != buf)
+ xfree (container);
+
+ if (opt.quota && total_downloaded_bytes > opt.quota)
+ return QUOTEXC;
+ else
+ return RETROK;
+}
+
+/* Return true if S has a leading '/' or contains '../' */
+static bool
+has_insecure_name_p (const char *s)
+{
+ if (*s == '/')
+ return true;
+
+ if (strstr (s, "../") != 0)
+ return true;
+
+ return false;
+}
+
+/* Test if the file node is invalid. This can occur due to malformed or
+ * maliciously crafted listing files being returned by the server.
+ *
+ * Currently, this function only tests if there are multiple entries in the
+ * listing file by the same name. However this function can be expanded as more
+ * such illegal listing formats are discovered. */
+static bool
+is_invalid_entry (struct fileinfo *f)
+{
+ struct fileinfo *cur = f;
+ char *f_name = f->name;
+
+ /* If the node we're currently checking has a duplicate later, we eliminate
+ * the current node and leave the next one intact. */
+ while (cur->next)
+ {
+ cur = cur->next;
+ if (strcmp (f_name, cur->name) == 0)
+ return true;
+ }
+ return false;
+}
+
+/* A near-top-level function to retrieve the files in a directory.
+ The function calls ftp_get_listing, to get a linked list of files.
+ Then it weeds out the file names that do not match the pattern.
+ ftp_retrieve_list is called with this updated list as an argument.
+
+ If the argument ACTION is GLOB_GETONE, just download the file (but
+ first get the listing, so that the time-stamp is heeded); if it's
+ GLOB_GLOBALL, use globbing; if it's GLOB_GETALL, download the whole
+ directory. */
+static uerr_t
+ftp_retrieve_glob (struct url *u, struct url *original_url,
+ ccon *con, int action)
+{
+ struct fileinfo *f, *start;
+ uerr_t res;
+
+ con->cmd |= LEAVE_PENDING;
+
+ res = ftp_get_listing (u, original_url, con, &start);
+ if (res != RETROK)
+ return res;
+
+ // Set the function used for glob matching.
+ int (*matcher) (const char *, const char *, int)
+ = opt.ignore_case ? fnmatch_nocase : fnmatch;
+
+ // Set the function used to compare strings
+#ifdef __VMS
+ /* 2009-09-09 SMS.
+ * Odd-ball compiler ("HP C V7.3-009 on OpenVMS Alpha V7.3-2")
+ * bug causes spurious %CC-E-BADCONDIT complaint with this
+ * "?:" statement. (Different linkage attributes for strcmp()
+ * and strcasecmp().) Converting to "if" changes the
+ * complaint to %CC-W-PTRMISMATCH on "cmp = strcmp;". Adding
+ * the senseless type cast clears the complaint, and looks
+ * harmless.
+ */
+ int (*cmp) (const char *, const char *)
+ = opt.ignore_case ? strcasecmp : (int (*)())strcmp;
+#else /* def __VMS */
+ int (*cmp) (const char *, const char *)
+ = opt.ignore_case ? strcasecmp : strcmp;
+#endif /* def __VMS [else] */
+
+ f = start;
+ while (f)
+ {
+
+ // Weed out files that do not confirm to the global rules given in
+ // opt.accepts and opt.rejects
+ if ((opt.accepts || opt.rejects) &&
+ f->type != FT_DIRECTORY && !acceptable (f->name))
+ {
+ logprintf (LOG_VERBOSE, _("Rejecting %s.\n"),
+ quote (f->name));
+ f = delelement (&f, &start);
+ continue;
+ }
+
+
+ // Identify and eliminate possibly harmful names or invalid entries.
+ if (has_insecure_name_p (f->name) || is_invalid_entry (f))
+ {
+ logprintf (LOG_VERBOSE, _("Rejecting %s (Invalid Entry).\n"),
+ quote (f->name));
+ f = delelement (&f, &start);
+ continue;
+ }
+
+ if (opt.acceptregex || opt.rejectregex)
+ {
+ // accept_url() takes the full URL.
+ char buf[1024];
+ char *url = buf;
+
+ if ((unsigned) snprintf(buf, sizeof(buf), "%s%s%s",
+ u->url, f->name, f->type == FT_DIRECTORY ? "/" : "")
+ >= sizeof(buf))
+ {
+ url = aprintf("%s%s%s", u->url, f->name, f->type == FT_DIRECTORY ? "/" : "");
+ }
+
+ if (!accept_url (url))
+ {
+ logprintf (LOG_VERBOSE, _ ("%s is excluded/not-included through regex.\n"), url);
+ f = delelement (&f, &start);
+ if (url != buf)
+ xfree(url);
+ continue;
+ }
+
+ if (url != buf)
+ xfree(url);
+ }
+
+ /* Now weed out the files that do not match our globbing pattern.
+ If we are dealing with a globbing pattern, that is. */
+ if (*u->file)
+ {
+ if (action == GLOB_GLOBALL)
+ {
+ int matchres = matcher (u->file, f->name, 0);
+ if (matchres == -1)
+ {
+ logprintf (LOG_NOTQUIET, _("Error matching %s against %s: %s\n"),
+ u->file, quotearg_style (escape_quoting_style, f->name),
+ strerror (errno));
+ freefileinfo (start);
+ return RETRBADPATTERN;
+ }
+ if (matchres == FNM_NOMATCH)
+ {
+ f = delelement (&f, &start); /* delete the element from the list */
+ continue;
+ }
+ }
+ else if (action == GLOB_GETONE)
+ {
+ if (0 != cmp(u->file, f->name))
+ {
+ f = delelement (&f, &start);
+ continue;
+ }
+ }
+ }
+ f = f->next;
+ }
+
+ /*
+ * Now that preprocessing of the file listing is over, let's try to download
+ * all the remaining files in our listing.
+ */
+ if (start)
+ {
+ /* Just get everything. */
+ res = ftp_retrieve_list (u, original_url, start, con);
+ }
+ else
+ {
+ if (action == GLOB_GLOBALL)
+ {
+ /* No luck. */
+ /* #### This message SUCKS. We should see what was the
+ reason that nothing was retrieved. */
+ logprintf (LOG_VERBOSE, _("No matches on pattern %s.\n"),
+ quote (u->file));
+ }
+ else if (action == GLOB_GETONE) /* GLOB_GETONE or GLOB_GETALL */
+ {
+ /* Let's try retrieving it anyway. */
+ con->st |= ON_YOUR_OWN;
+ res = ftp_loop_internal (u, original_url, NULL, con, NULL, false);
+ return res;
+ }
+
+ /* If action == GLOB_GETALL, and the file list is empty, there's
+ no point in trying to download anything or in complaining about
+ it. (An empty directory should not cause complaints.)
+ */
+ }
+ freefileinfo (start);
+ if (opt.quota && total_downloaded_bytes > opt.quota)
+ return QUOTEXC;
+ else
+ return res;
+}
+
+/* The wrapper that calls an appropriate routine according to contents
+ of URL. Inherently, its capabilities are limited on what can be
+ encoded into a URL. */
+uerr_t
+ftp_loop (struct url *u, struct url *original_url, char **local_file, int *dt,
+ struct url *proxy, bool recursive, bool glob)
+{
+ ccon con; /* FTP connection */
+ uerr_t res;
+
+ *dt = 0;
+
+ xzero (con);
+
+ con.csock = -1;
+ con.st = ON_YOUR_OWN;
+ con.rs = ST_UNIX;
+ con.id = NULL;
+ con.proxy = proxy;
+
+ /* If the file name is empty, the user probably wants a directory
+ index. We'll provide one, properly HTML-ized. Unless
+ opt.htmlify is 0, of course. :-) */
+ if (!*u->file && !recursive)
+ {
+ struct fileinfo *f;
+ res = ftp_get_listing (u, original_url, &con, &f);
+
+ if (res == RETROK)
+ {
+ if (opt.htmlify && !opt.spider)
+ {
+ struct url *url_file = opt.trustservernames ? u : original_url;
+ char *filename = (opt.output_document
+ ? xstrdup (opt.output_document)
+ : (con.target ? xstrdup (con.target)
+ : url_file_name (url_file, NULL)));
+ res = ftp_index (filename, u, f);
+ if (res == FTPOK && opt.verbose)
+ {
+ if (!opt.output_document)
+ {
+ struct stat st;
+ wgint sz;
+ if (stat (filename, &st) == 0)
+ sz = st.st_size;
+ else
+ sz = -1;
+ logprintf (LOG_NOTQUIET,
+ _("Wrote HTML-ized index to %s [%s].\n"),
+ quote (filename), number_to_static_string (sz));
+ }
+ else
+ logprintf (LOG_NOTQUIET,
+ _("Wrote HTML-ized index to %s.\n"),
+ quote (filename));
+ }
+ xfree (filename);
+ }
+ freefileinfo (f);
+ }
+ }
+ else
+ {
+ bool ispattern = false;
+ if (glob)
+ {
+ /* Treat the URL as a pattern if the file name part of the
+ URL path contains wildcards. (Don't check for u->file
+ because it is unescaped and therefore doesn't leave users
+ the option to escape literal '*' as %2A.) */
+ char *file_part = strrchr (u->path, '/');
+ if (!file_part)
+ file_part = u->path;
+ ispattern = has_wildcards_p (file_part);
+ }
+ if (ispattern || recursive || opt.timestamping || opt.preserve_perm)
+ {
+ /* ftp_retrieve_glob is a catch-all function that gets called
+ if we need globbing, time-stamping, recursion or preserve
+ permissions. Its third argument is just what we really need. */
+ res = ftp_retrieve_glob (u, original_url, &con,
+ ispattern ? GLOB_GLOBALL : GLOB_GETONE);
+ }
+ else
+ {
+ res = ftp_loop_internal (u, original_url, NULL, &con, local_file, false);
+ }
+ }
+ if (res == FTPOK)
+ res = RETROK;
+ if (res == RETROK)
+ *dt |= RETROKF;
+ /* If a connection was left, quench it. */
+ if (con.csock != -1)
+ fd_close (con.csock);
+ xfree (con.id);
+ xfree (con.target);
+ return res;
+}
+
+/* Delete an element from the fileinfo linked list. Returns the
+ address of the next element, or NULL if the list is exhausted. It
+ can modify the start of the list. */
+static struct fileinfo *
+delelement (struct fileinfo **f, struct fileinfo **start)
+{
+ struct fileinfo *prev = (*f)->prev;
+ struct fileinfo *next = (*f)->next;
+
+ xfree ((*f)->name);
+ xfree ((*f)->linkto);
+ xfree (*f);
+ *f = NULL;
+
+ if (next)
+ next->prev = prev;
+ if (prev)
+ prev->next = next;
+ else
+ *start = next;
+ return next;
+}
+
+/* Free the fileinfo linked list of files. */
+void
+freefileinfo (struct fileinfo *f)
+{
+ while (f)
+ {
+ struct fileinfo *next = f->next;
+ xfree (f->name);
+ if (f->linkto)
+ xfree (f->linkto);
+ xfree (f);
+ f = next;
+ }
+}
diff --git a/src/ftp.h b/src/ftp.h
new file mode 100644
index 0000000..9958853
--- /dev/null
+++ b/src/ftp.h
@@ -0,0 +1,184 @@
+/* Declarations for FTP support.
+ Copyright (C) 1996-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef FTP_H
+#define FTP_H
+
+#include <stdio.h>
+#include <stdbool.h>
+
+#include "host.h"
+#include "url.h"
+
+/* System types. */
+enum stype
+{
+ ST_UNIX,
+ ST_VMS,
+ ST_WINNT,
+ ST_MACOS,
+ ST_OS400,
+ ST_OTHER
+};
+
+/* Extensions of the ST_UNIX */
+enum ustype
+{
+ UST_TYPE_L8,
+ UST_MULTINET,
+ UST_OTHER
+};
+
+#ifdef HAVE_SSL
+/* Data channel protection levels (to be used with PBSZ) */
+enum prot_level
+{
+ PROT_CLEAR = 'C',
+ PROT_SAFE = 'S',
+ PROT_CONFIDENTIAL = 'E',
+ PROT_PRIVATE = 'P'
+};
+#endif
+
+uerr_t ftp_response (int, char **);
+uerr_t ftp_greeting (int);
+uerr_t ftp_login (int, const char *, const char *);
+uerr_t ftp_port (int, int *);
+uerr_t ftp_pasv (int, ip_address *, int *);
+#ifdef HAVE_SSL
+uerr_t ftp_auth (int, enum url_scheme);
+uerr_t ftp_pbsz (int, int);
+uerr_t ftp_prot (int, enum prot_level);
+#endif
+#ifdef ENABLE_IPV6
+uerr_t ftp_lprt (int, int *);
+uerr_t ftp_lpsv (int, ip_address *, int *);
+uerr_t ftp_eprt (int, int *);
+uerr_t ftp_epsv (int, ip_address *, int *);
+#endif
+uerr_t ftp_type (int, int);
+uerr_t ftp_cwd (int, const char *);
+uerr_t ftp_retr (int, const char *);
+uerr_t ftp_rest (int, wgint);
+uerr_t ftp_list (int, const char *, bool, bool, bool *);
+uerr_t ftp_syst (int, enum stype *, enum ustype *);
+uerr_t ftp_pwd (int, char **);
+uerr_t ftp_size (int, const char *, wgint *);
+
+#ifdef ENABLE_OPIE
+const char *skey_response (int, const char *, const char *);
+#endif
+
+struct url;
+
+/* File types. */
+enum ftype
+{
+ FT_PLAINFILE,
+ FT_DIRECTORY,
+ FT_SYMLINK,
+ FT_UNKNOWN
+};
+
+
+/* Globbing (used by ftp_retrieve_glob). */
+enum
+{
+ GLOB_GLOBALL, GLOB_GETALL, GLOB_GETONE
+};
+
+/* Used by to test if time parsed includes hours and minutes. */
+enum parsetype
+{
+ TT_HOUR_MIN, TT_DAY
+};
+
+
+/* Information about one filename in a linked list. */
+struct fileinfo
+{
+ enum ftype type; /* file type */
+ char *name; /* file name */
+ wgint size; /* file size */
+ long tstamp; /* time-stamp */
+ enum parsetype ptype; /* time parsing */
+ int perms; /* file permissions */
+ char *linkto; /* link to which file points */
+ struct fileinfo *prev; /* previous... */
+ struct fileinfo *next; /* ...and next structure. */
+};
+
+/* Commands for FTP functions. */
+enum wget_ftp_command
+{
+ DO_LOGIN = 0x0001, /* Connect and login to the server. */
+ DO_CWD = 0x0002, /* Change current directory. */
+ DO_RETR = 0x0004, /* Retrieve the file. */
+ DO_LIST = 0x0008, /* Retrieve the directory list. */
+ LEAVE_PENDING = 0x0010 /* Do not close the socket. */
+};
+
+enum wget_ftp_fstatus
+{
+ NOTHING = 0x0000, /* Nothing done yet. */
+ ON_YOUR_OWN = 0x0001, /* The ftp_loop_internal sets the
+ defaults. */
+ DONE_CWD = 0x0002, /* The current working directory is
+ correct. */
+
+ /* 2013-10-17 Andrea Urbani (matfanjol)
+ For more information about the following entries, please,
+ look at ftp.c, function getftp, text "__LIST_A_EXPLANATION__". */
+ AVOID_LIST_A = 0x0004, /* It tells us if during this
+ session we have to avoid the use
+ of "LIST -a".*/
+ AVOID_LIST = 0x0008, /* It tells us if during this
+ session we have to avoid to use
+ "LIST". */
+ LIST_AFTER_LIST_A_CHECK_DONE = 0x0010,
+ /* It tells us if we have already
+ checked "LIST" after the first
+ "LIST -a" to handle the case of
+ file/folders named "-a". */
+ DATA_CHANNEL_SECURITY = 0x0020 /* Establish a secure data channel */
+};
+
+struct fileinfo *ftp_parse_ls (const char *, const enum stype);
+struct fileinfo *ftp_parse_ls_fp (FILE *, const enum stype);
+void freefileinfo(struct fileinfo *);
+uerr_t ftp_loop (struct url *, struct url *, char **, int *, struct url *,
+ bool, bool);
+
+uerr_t ftp_index (const char *, struct url *, struct fileinfo *);
+
+char ftp_process_type (const char *);
+
+
+#endif /* FTP_H */
diff --git a/src/gnutls.c b/src/gnutls.c
new file mode 100644
index 0000000..5706dbb
--- /dev/null
+++ b/src/gnutls.c
@@ -0,0 +1,1116 @@
+/* SSL support via GnuTLS library.
+ Copyright (C) 2005-2012, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+#include <errno.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdio.h>
+#include <dirent.h>
+#include <stdlib.h>
+#include <xalloc.h>
+
+#include <gnutls/abstract.h>
+#include <gnutls/gnutls.h>
+#include <gnutls/x509.h>
+#include <sys/ioctl.h>
+
+#include "utils.h"
+#include "connect.h"
+#include "url.h"
+#include "ptimer.h"
+#include "hash.h"
+#include "ssl.h"
+
+#include <fcntl.h>
+
+#ifdef WIN32
+# include "w32sock.h"
+#endif
+
+#include "host.h"
+
+struct st_read_timer
+{
+ double timeout;
+ double next_timeout;
+ struct ptimer *timer;
+ int timed_out;
+};
+
+static int
+_do_handshake (gnutls_session_t session, int fd, struct st_read_timer *timeout);
+
+#if GNUTLS_VERSION_NUMBER >= 0x030604
+static int
+_do_reauth (gnutls_session_t session, int fd, struct st_read_timer *timeout);
+#endif
+
+static int
+key_type_to_gnutls_type (enum keyfile_type type)
+{
+ switch (type)
+ {
+ case keyfile_pem:
+ return GNUTLS_X509_FMT_PEM;
+ case keyfile_asn1:
+ return GNUTLS_X509_FMT_DER;
+ default:
+ abort ();
+ }
+}
+
+/* Note: some of the functions private to this file have names that
+ begin with "wgnutls_" (e.g. wgnutls_read) so that they wouldn't be
+ confused with actual gnutls functions -- such as the gnutls_read
+ preprocessor macro. */
+
+static gnutls_certificate_credentials_t credentials;
+bool
+ssl_init (void)
+{
+ /* Becomes true if GnuTLS is initialized. */
+ static bool ssl_initialized = false;
+ const char *ca_directory;
+ DIR *dir;
+ int ncerts = -1;
+ int rc;
+
+ /* GnuTLS should be initialized only once. */
+ if (ssl_initialized)
+ return true;
+
+ gnutls_global_init ();
+ gnutls_certificate_allocate_credentials (&credentials);
+ gnutls_certificate_set_verify_flags (credentials,
+ GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT);
+
+#if GNUTLS_VERSION_MAJOR >= 3
+ if (!opt.ca_directory)
+ ncerts = gnutls_certificate_set_x509_system_trust (credentials);
+#endif
+
+ /* If GnuTLS version is too old or CA loading failed, fallback to old behaviour.
+ * Also use old behaviour if the CA directory is user-provided. */
+ if (ncerts <= 0)
+ {
+ ncerts = 0;
+
+ ca_directory = opt.ca_directory ? opt.ca_directory : "/etc/ssl/certs";
+
+ if ((dir = opendir (ca_directory)) == NULL)
+ {
+ if (opt.ca_directory && *opt.ca_directory)
+ logprintf (LOG_NOTQUIET, _("ERROR: Cannot open directory %s.\n"),
+ opt.ca_directory);
+ }
+ else
+ {
+ struct hash_table *inode_map = hash_table_new (196, NULL, NULL);
+ struct dirent *dent;
+
+ while ((dent = readdir (dir)) != NULL)
+ {
+ struct stat st;
+ char ca_file[1024];
+
+ if (((unsigned) snprintf (ca_file, sizeof (ca_file), "%s/%s", ca_directory, dent->d_name)) >= sizeof (ca_file))
+ continue; // overflow
+
+ if (stat (ca_file, &st) != 0)
+ continue;
+
+ if (! S_ISREG (st.st_mode))
+ continue;
+
+ /* avoid loading the same file twice by checking the inode. */
+ if (hash_table_contains (inode_map, (void *)(intptr_t) st.st_ino))
+ continue;
+
+ hash_table_put (inode_map, (void *)(intptr_t) st.st_ino, NULL);
+ if ((rc = gnutls_certificate_set_x509_trust_file (credentials, ca_file,
+ GNUTLS_X509_FMT_PEM)) <= 0)
+ DEBUGP (("WARNING: Failed to open cert %s: (%d).\n", ca_file, rc));
+ else
+ ncerts += rc;
+ }
+
+ hash_table_destroy (inode_map);
+ closedir (dir);
+ }
+ }
+
+ if (opt.ca_cert)
+ {
+ if (ncerts < 0)
+ ncerts = 0;
+
+ if ((rc = gnutls_certificate_set_x509_trust_file (credentials, opt.ca_cert,
+ GNUTLS_X509_FMT_PEM)) <= 0)
+ logprintf (LOG_NOTQUIET, _("ERROR: Failed to open cert %s: (%d).\n"),
+ opt.ca_cert, rc);
+ else
+ {
+ ncerts += rc;
+ logprintf (LOG_VERBOSE, _("Loaded CA certificate '%s'\n"), opt.ca_cert);
+ }
+ }
+
+ if (opt.crl_file)
+ {
+ if ((rc = gnutls_certificate_set_x509_crl_file (credentials, opt.crl_file, GNUTLS_X509_FMT_PEM)) <= 0)
+ {
+ logprintf (LOG_NOTQUIET, _("ERROR: Failed to load CRL file '%s': (%d)\n"), opt.crl_file, rc);
+ return false;
+ }
+
+ logprintf (LOG_VERBOSE, _("Loaded CRL file '%s'\n"), opt.crl_file);
+ }
+
+ DEBUGP (("Certificates loaded: %d\n", ncerts));
+
+ /* Use the private key from the cert file unless otherwise specified. */
+ if (opt.cert_file && !opt.private_key)
+ {
+ opt.private_key = xstrdup (opt.cert_file);
+ opt.private_key_type = opt.cert_type;
+ }
+ /* Use the cert from the private key file unless otherwise specified. */
+ if (!opt.cert_file && opt.private_key)
+ {
+ opt.cert_file = xstrdup (opt.private_key);
+ opt.cert_type = opt.private_key_type;
+ }
+
+ if (opt.cert_file && opt.private_key)
+ {
+ int type;
+ if (opt.private_key_type != opt.cert_type)
+ {
+ /* GnuTLS can't handle this */
+ logprintf (LOG_NOTQUIET, _("ERROR: GnuTLS requires the key and the \
+cert to be of the same type.\n"));
+ }
+
+ type = key_type_to_gnutls_type (opt.private_key_type);
+
+ gnutls_certificate_set_x509_key_file (credentials, opt.cert_file,
+ opt.private_key,
+ type);
+ }
+
+ ssl_initialized = true;
+
+ return true;
+}
+
+void
+ssl_cleanup (void)
+{
+ if (credentials)
+ gnutls_certificate_free_credentials(credentials);
+
+ gnutls_global_deinit();
+}
+
+struct wgnutls_transport_context
+{
+ gnutls_session_t session; /* GnuTLS session handle */
+ gnutls_datum_t *session_data;
+ int last_error; /* last error returned by read/write/... */
+
+ /* Since GnuTLS doesn't support the equivalent to recv(...,
+ MSG_PEEK) or SSL_peek(), we have to do it ourselves. Peeked data
+ is stored to PEEKBUF, and wgnutls_read checks that buffer before
+ actually reading. */
+ char peekbuf[512];
+ int peeklen;
+};
+
+static int
+wgnutls_read_timeout (int fd, char *buf, int bufsize, void *arg, double timeout)
+{
+#ifdef F_GETFL
+ int flags = 0;
+#endif
+ struct wgnutls_transport_context *ctx = arg;
+ int ret = gnutls_record_check_pending (ctx->session);
+ struct st_read_timer read_timer = {(timeout == -1 ? opt.read_timeout : timeout), 0, NULL, 0};
+
+ if (ret)
+ return gnutls_record_recv (ctx->session, buf, MIN (ret, bufsize));
+
+ if (read_timer.timeout)
+ {
+#ifdef F_GETFL
+ flags = fcntl (fd, F_GETFL, 0);
+ if (flags < 0)
+ return flags;
+ if (fcntl (fd, F_SETFL, flags | O_NONBLOCK))
+ return -1;
+#else
+ /* XXX: Assume it was blocking before. */
+ const int one = 1;
+ if (ioctl (fd, FIONBIO, &one) < 0)
+ return -1;
+#endif
+
+ read_timer.timer = ptimer_new ();
+ if (read_timer.timer == NULL)
+ {
+ ret = -1;
+ goto timer_err;
+ }
+ read_timer.next_timeout = read_timer.timeout;
+ }
+
+ ret = ctx->last_error;
+ do
+ {
+ if (ret == GNUTLS_E_REHANDSHAKE)
+ {
+ int err;
+ DEBUGP (("GnuTLS: *** REHANDSHAKE while reading\n"));
+ if ((err = _do_handshake (ctx->session, fd, &read_timer)) != 0)
+ {
+ ret = err;
+ break;
+ }
+ }
+#if GNUTLS_VERSION_NUMBER >= 0x030604
+ else if (ret == GNUTLS_E_REAUTH_REQUEST)
+ {
+ int err;
+ DEBUGP (("GnuTLS: *** re-authentication while reading\n"));
+ if ((err = _do_reauth (ctx->session, fd, &read_timer)) != 0)
+ {
+ ret = err;
+ break;
+ }
+ }
+#endif
+ do
+ {
+ ret = gnutls_record_recv (ctx->session, buf, bufsize);
+ if (ret == GNUTLS_E_AGAIN && read_timer.timer)
+ {
+ int err = select_fd_nb (fd, read_timer.next_timeout, WAIT_FOR_READ);
+ if (err <= 0)
+ {
+ if (err == 0)
+ read_timer.timed_out = 1;
+ goto break_all;
+ }
+ if ( (read_timer.next_timeout = read_timer.timeout - ptimer_measure (read_timer.timer)) <= 0 )
+ {
+ read_timer.timed_out = 1;
+ goto break_all;
+ }
+ }
+ }
+ while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
+ }
+ while (ret == GNUTLS_E_REHANDSHAKE
+#if GNUTLS_VERSION_NUMBER >= 0x030604
+ || ret == GNUTLS_E_REAUTH_REQUEST
+#endif
+ );
+
+break_all:
+ if (read_timer.timer)
+ {
+ ptimer_destroy (read_timer.timer);
+timer_err: ;
+#ifdef F_GETFL
+ if (fcntl (fd, F_SETFL, flags) < 0)
+ return -1;
+#else
+ {
+ const int zero = 0;
+ if (ioctl (fd, FIONBIO, &zero) < 0)
+ return -1;
+ }
+#endif
+ if (read_timer.timed_out)
+ errno = ETIMEDOUT;
+ }
+
+ return ret;
+}
+
+static int
+wgnutls_read (int fd, char *buf, int bufsize, void *arg, double timeout)
+{
+ int ret;
+ struct wgnutls_transport_context *ctx = arg;
+
+ if (ctx->peeklen)
+ {
+ /* If we have any peek data, simply return that. */
+ int copysize = MIN (bufsize, ctx->peeklen);
+ memcpy (buf, ctx->peekbuf, copysize);
+ ctx->peeklen -= copysize;
+ if (ctx->peeklen != 0)
+ memmove (ctx->peekbuf, ctx->peekbuf + copysize, ctx->peeklen);
+
+ return copysize;
+ }
+
+ ret = wgnutls_read_timeout (fd, buf, bufsize, arg, timeout);
+ ctx->last_error = ret;
+ return ret;
+}
+
+static int
+wgnutls_write (int fd _GL_UNUSED, char *buf, int bufsize, void *arg)
+{
+ struct wgnutls_transport_context *ctx = arg;
+ int ret = ctx->last_error;
+
+ /* it should never happen,
+ placed here only for debug msg. */
+ if (ret == GNUTLS_E_REHANDSHAKE)
+ {
+ DEBUGP (("GnuTLS: *** REHANDSHAKE while writing\n"));
+ if ((ret = _do_handshake (ctx->session, fd, NULL)) != 0)
+ goto ext;
+ }
+#if GNUTLS_VERSION_NUMBER >= 0x030604
+ else if (ret == GNUTLS_E_REAUTH_REQUEST)
+ {
+ DEBUGP (("GnuTLS: *** re-authentication while writing\n"));
+ if ((ret = _do_reauth (ctx->session, fd, NULL)) != 0)
+ goto ext;
+ }
+#endif
+
+ do
+ ret = gnutls_record_send (ctx->session, buf, bufsize);
+ while (ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN);
+ext:
+ ctx->last_error = ret;
+ return ret;
+}
+
+static int
+wgnutls_poll (int fd, double timeout, int wait_for, void *arg)
+{
+ struct wgnutls_transport_context *ctx = arg;
+
+ if ((wait_for & WAIT_FOR_READ)
+ && (ctx->peeklen || gnutls_record_check_pending (ctx->session)))
+ return 1;
+
+ if (timeout == -1)
+ timeout = opt.read_timeout;
+ return select_fd (fd, timeout, wait_for);
+}
+
+static int
+wgnutls_peek (int fd, char *buf, int bufsize, void *arg, double timeout)
+{
+ int read = 0;
+ struct wgnutls_transport_context *ctx = arg;
+ int offset = MIN (bufsize, ctx->peeklen);
+
+ if (ctx->peeklen)
+ {
+ memcpy (buf, ctx->peekbuf, offset);
+ return offset;
+ }
+
+ if (bufsize > (int) sizeof ctx->peekbuf)
+ bufsize = sizeof ctx->peekbuf;
+
+ if (bufsize > offset)
+ { /* let wgnutls_read_timeout() take care about timeout */
+ /*if (timeout && gnutls_record_check_pending (ctx->session) == 0
+ && select_fd (fd, 0.0, WAIT_FOR_READ) <= 0)
+ read = 0;
+ else*/
+ read = wgnutls_read_timeout (fd, buf + offset, bufsize - offset,
+ ctx, timeout);
+ ctx->last_error = read;
+ if (read < 0)
+ {
+ if (offset)
+ read = 0;
+ else
+ return read;
+ }
+
+ if (read > 0)
+ {
+ memcpy (ctx->peekbuf + offset, buf + offset,
+ read);
+ ctx->peeklen += read;
+ }
+ }
+
+ return offset + read;
+}
+
+static const char *
+wgnutls_errstr (int fd _GL_UNUSED, void *arg)
+{
+ struct wgnutls_transport_context *ctx = arg;
+
+ if (ctx->last_error > 0
+ || ((ctx->last_error == GNUTLS_E_AGAIN
+ || ctx->last_error == GNUTLS_E_REHANDSHAKE
+#if GNUTLS_VERSION_NUMBER >= 0x030604
+ || ctx->last_error == GNUTLS_E_REAUTH_REQUEST
+#endif
+ ) && errno == ETIMEDOUT))
+ return NULL;
+
+ return gnutls_strerror (ctx->last_error);
+}
+
+static void
+wgnutls_close (int fd, void *arg)
+{
+ struct wgnutls_transport_context *ctx = arg;
+ /*gnutls_bye (ctx->session, GNUTLS_SHUT_RDWR);*/
+ if (ctx->session_data)
+ {
+ gnutls_free (ctx->session_data->data);
+ gnutls_free (ctx->session_data);
+ }
+ gnutls_deinit (ctx->session);
+ xfree (ctx);
+ close (fd);
+}
+
+/* gnutls_transport is the singleton that describes the SSL transport
+ methods provided by this file. */
+
+static struct transport_implementation wgnutls_transport =
+{
+ wgnutls_read, wgnutls_write, wgnutls_poll,
+ wgnutls_peek, wgnutls_errstr, wgnutls_close
+};
+
+static int
+_do_handshake (gnutls_session_t session, int fd, struct st_read_timer *read_timer)
+{
+#ifdef F_GETFL
+ int flags = 0;
+#endif
+ int err;
+ double next_timeout = (read_timer ? read_timer->next_timeout : opt.read_timeout);
+
+ /* if (read_timer != NULL) - fd is already non blocking */
+ if (!read_timer && next_timeout)
+ {
+#ifdef F_GETFL
+ flags = fcntl (fd, F_GETFL, 0);
+ if (flags < 0)
+ return flags;
+ if (fcntl (fd, F_SETFL, flags | O_NONBLOCK))
+ return -1;
+#else
+ /* XXX: Assume it was blocking before. */
+ const int one = 1;
+ if (ioctl (fd, FIONBIO, &one) < 0)
+ return -1;
+#endif
+ }
+
+ /* We don't stop the handshake process for non-fatal errors */
+ do
+ {
+ err = gnutls_handshake (session);
+
+ if (err == GNUTLS_E_AGAIN && next_timeout)
+ {
+ int sel;
+ if (gnutls_record_get_direction (session))
+ {
+ /* wait for writeability */
+ sel = WAIT_FOR_WRITE;
+ }
+ else
+ {
+ /* wait for readability */
+ sel = WAIT_FOR_READ;
+ }
+ sel = select_fd_nb (fd, next_timeout, sel);
+
+ if (sel <= 0)
+ {
+ if (sel == 0)
+ {
+ if (read_timer)
+ goto read_timedout;
+ else
+ {
+ errno = ETIMEDOUT;
+ err = -1;
+ }
+ }
+ break;
+ }
+ if (read_timer)
+ {
+ if ( (read_timer->next_timeout = read_timer->timeout - ptimer_measure (read_timer->timer)) <= 0 )
+ {
+read_timedout: /* return GNUTLS_E_REHANDSHAKE for gnutls_read */
+ err = GNUTLS_E_REHANDSHAKE;
+ read_timer->timed_out = 1;
+ break;
+ }
+ next_timeout = read_timer->next_timeout;
+ }
+ }
+ else if (err < 0)
+ {
+ logprintf (LOG_NOTQUIET, "GnuTLS: %s\n", gnutls_strerror (err));
+ if (err == GNUTLS_E_WARNING_ALERT_RECEIVED ||
+ err == GNUTLS_E_FATAL_ALERT_RECEIVED)
+ {
+ gnutls_alert_description_t alert = gnutls_alert_get (session);
+ const char *str = gnutls_alert_get_name (alert);
+ logprintf (LOG_NOTQUIET, "GnuTLS: received alert [%u]: %s\n",
+ alert, str ? str : "(unknown)");
+ }
+ }
+ }
+ while (err && gnutls_error_is_fatal (err) == 0);
+
+ if (!read_timer && next_timeout)
+ {
+#ifdef F_GETFL
+ if (fcntl (fd, F_SETFL, flags) < 0)
+ return -1;
+#else
+ const int zero = 0;
+ if (ioctl (fd, FIONBIO, &zero) < 0)
+ return -1;
+#endif
+ }
+
+ return err;
+}
+
+#if GNUTLS_VERSION_NUMBER >= 0x030604
+static int
+_do_reauth (gnutls_session_t session, int fd, struct st_read_timer *read_timer)
+{
+#ifdef F_GETFL
+ int flags = 0;
+#endif
+ int err;
+ double next_timeout = (read_timer ? read_timer->next_timeout : opt.read_timeout);
+
+ /* if (read_timer != NULL) - fd is already non blocking */
+ if (!read_timer && next_timeout)
+ {
+#ifdef F_GETFL
+ flags = fcntl (fd, F_GETFL, 0);
+ if (flags < 0)
+ return flags;
+ if (fcntl (fd, F_SETFL, flags | O_NONBLOCK))
+ return -1;
+#else
+ /* XXX: Assume it was blocking before. */
+ const int one = 1;
+ if (ioctl (fd, FIONBIO, &one) < 0)
+ return -1;
+#endif
+ }
+
+ /* We don't stop the handshake process for non-fatal errors */
+ do
+ {
+ err = gnutls_reauth (session, 0);
+
+ if (err == GNUTLS_E_AGAIN && next_timeout)
+ {
+ int sel;
+ if (gnutls_record_get_direction (session))
+ {
+ /* wait for writeability */
+ sel = WAIT_FOR_WRITE;
+ }
+ else
+ {
+ /* wait for readability */
+ sel = WAIT_FOR_READ;
+ }
+ sel = select_fd_nb (fd, next_timeout, sel);
+
+ if (sel <= 0)
+ {
+ if (sel == 0)
+ {
+ if (read_timer)
+ goto read_timedout;
+ else
+ {
+ errno = ETIMEDOUT;
+ err = -1;
+ }
+ }
+ break;
+ }
+ if (read_timer)
+ {
+ if ( (read_timer->next_timeout = read_timer->timeout - ptimer_measure (read_timer->timer)) <= 0 )
+ {
+read_timedout: /* return GNUTLS_E_REAUTH_REQUEST for gnutls_read */
+ err = GNUTLS_E_REAUTH_REQUEST;
+ read_timer->timed_out = 1;
+ break;
+ }
+ next_timeout = read_timer->next_timeout;
+ }
+ }
+ else if (err < 0)
+ {
+ logprintf (LOG_NOTQUIET, "GnuTLS: %s\n", gnutls_strerror (err));
+ }
+ }
+ while (err && gnutls_error_is_fatal (err) == 0);
+
+ if (!read_timer && next_timeout)
+ {
+#ifdef F_GETFL
+ if (fcntl (fd, F_SETFL, flags) < 0)
+ return -1;
+#else
+ const int zero = 0;
+ if (ioctl (fd, FIONBIO, &zero) < 0)
+ return -1;
+#endif
+ }
+
+ return err;
+}
+#endif
+
+static const char *
+_sni_hostname(const char *hostname)
+{
+ size_t len = strlen(hostname);
+
+ char *sni_hostname = xmemdup(hostname, len + 1);
+
+ /* Remove trailing dot(s) to fix #47408.
+ * Regarding RFC 6066 (SNI): The hostname is represented as a byte
+ * string using ASCII encoding without a trailing dot. */
+ while (len && sni_hostname[--len] == '.')
+ sni_hostname[len] = 0;
+
+ return sni_hostname;
+}
+
+static int
+set_prio_default (gnutls_session_t session)
+{
+ int err = -1;
+
+#if HAVE_GNUTLS_PRIORITY_SET_DIRECT
+ switch (opt.secure_protocol)
+ {
+ case secure_protocol_auto:
+ err = gnutls_set_default_priority (session);
+ gnutls_session_enable_compatibility_mode(session);
+ break;
+
+ case secure_protocol_sslv2:
+ case secure_protocol_sslv3:
+ err = gnutls_priority_set_direct (session, "NORMAL:-VERS-TLS-ALL:+VERS-SSL3.0", NULL);
+ break;
+
+ case secure_protocol_tlsv1:
+ err = gnutls_priority_set_direct (session, "NORMAL:-VERS-SSL3.0", NULL);
+ break;
+
+ case secure_protocol_tlsv1_1:
+ err = gnutls_priority_set_direct (session, "NORMAL:-VERS-SSL3.0:-VERS-TLS1.0", NULL);
+ break;
+
+ case secure_protocol_tlsv1_2:
+ err = gnutls_priority_set_direct (session, "NORMAL:-VERS-SSL3.0:-VERS-TLS1.0:-VERS-TLS1.1", NULL);
+ break;
+
+ case secure_protocol_tlsv1_3:
+#if GNUTLS_VERSION_NUMBER >= 0x030603
+ err = gnutls_priority_set_direct (session, "NORMAL:-VERS-SSL3.0:+VERS-TLS1.3:-VERS-TLS1.0:-VERS-TLS1.1:-VERS-TLS1.2", NULL);
+ break;
+#else
+ logprintf (LOG_NOTQUIET, _("Your GnuTLS version is too old to support TLS 1.3\n"));
+ return -1;
+#endif
+
+ case secure_protocol_pfs:
+ err = gnutls_priority_set_direct (session, "PFS:-VERS-SSL3.0", NULL);
+ if (err != GNUTLS_E_SUCCESS)
+ /* fallback if PFS is not available */
+ err = gnutls_priority_set_direct (session, "NORMAL:-RSA:-VERS-SSL3.0", NULL);
+ break;
+
+ default:
+ logprintf (LOG_NOTQUIET, _("GnuTLS: unimplemented 'secure-protocol' option value %u\n"),
+ (unsigned) opt.secure_protocol);
+ logprintf (LOG_NOTQUIET, _("Please report this issue to bug-wget@gnu.org\n"));
+ abort ();
+ }
+#else
+ int allowed_protocols[4] = {0, 0, 0, 0};
+ switch (opt.secure_protocol)
+ {
+ case secure_protocol_auto:
+ err = gnutls_set_default_priority (session);
+ break;
+
+ case secure_protocol_sslv2:
+ case secure_protocol_sslv3:
+ allowed_protocols[0] = GNUTLS_SSL3;
+ err = gnutls_protocol_set_priority (session, allowed_protocols);
+ break;
+
+ case secure_protocol_tlsv1:
+ allowed_protocols[0] = GNUTLS_TLS1_0;
+ allowed_protocols[1] = GNUTLS_TLS1_1;
+ allowed_protocols[2] = GNUTLS_TLS1_2;
+#if GNUTLS_VERSION_NUMBER >= 0x030603
+ allowed_protocols[3] = GNUTLS_TLS1_3;
+#endif
+ err = gnutls_protocol_set_priority (session, allowed_protocols);
+ break;
+
+ case secure_protocol_tlsv1_1:
+ allowed_protocols[0] = GNUTLS_TLS1_1;
+ allowed_protocols[1] = GNUTLS_TLS1_2;
+#if GNUTLS_VERSION_NUMBER >= 0x030603
+ allowed_protocols[2] = GNUTLS_TLS1_3;
+#endif
+ err = gnutls_protocol_set_priority (session, allowed_protocols);
+ break;
+
+ case secure_protocol_tlsv1_2:
+ allowed_protocols[0] = GNUTLS_TLS1_2;
+#if GNUTLS_VERSION_NUMBER >= 0x030603
+ allowed_protocols[1] = GNUTLS_TLS1_3;
+#endif
+ err = gnutls_protocol_set_priority (session, allowed_protocols);
+ break;
+
+ case secure_protocol_tlsv1_3:
+#if GNUTLS_VERSION_NUMBER >= 0x030603
+ allowed_protocols[0] = GNUTLS_TLS1_3;
+ err = gnutls_protocol_set_priority (session, allowed_protocols);
+ break;
+#else
+ logprintf (LOG_NOTQUIET, _("Your GnuTLS version is too old to support TLS 1.3\n"));
+ return -1;
+#endif
+
+ default:
+ logprintf (LOG_NOTQUIET, _("GnuTLS: unimplemented 'secure-protocol' option value %d\n"), opt.secure_protocol);
+ logprintf (LOG_NOTQUIET, _("Please report this issue to bug-wget@gnu.org\n"));
+ abort ();
+ }
+#endif
+
+ return err;
+}
+
+bool
+ssl_connect_wget (int fd, const char *hostname, int *continue_session)
+{
+ struct wgnutls_transport_context *ctx;
+ gnutls_session_t session;
+ int err;
+
+#if GNUTLS_VERSION_NUMBER >= 0x030604
+ // enable support of TLS1.3 post-handshake authentication
+ gnutls_init (&session, GNUTLS_CLIENT | GNUTLS_POST_HANDSHAKE_AUTH);
+#else
+ gnutls_init (&session, GNUTLS_CLIENT);
+#endif
+
+ /* We set the server name but only if it's not an IP address. */
+ if (! is_valid_ip_address (hostname))
+ {
+ /* GnuTLS 3.4.x (x<=10) disrespects the length parameter, we have to construct a new string */
+ /* see https://gitlab.com/gnutls/gnutls/issues/78 */
+ const char *sni_hostname = _sni_hostname(hostname);
+
+ gnutls_server_name_set (session, GNUTLS_NAME_DNS, sni_hostname, strlen(sni_hostname));
+ xfree(sni_hostname);
+ }
+
+ gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, credentials);
+#ifndef FD_TO_SOCKET
+# define FD_TO_SOCKET(X) (X)
+#endif
+#ifdef HAVE_INTPTR_T
+ gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) (intptr_t) FD_TO_SOCKET (fd));
+#else
+ gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) FD_TO_SOCKET (fd));
+#endif
+
+ if (!opt.tls_ciphers_string)
+ {
+ err = set_prio_default (session);
+ }
+ else
+ {
+#if HAVE_GNUTLS_PRIORITY_SET_DIRECT
+ err = gnutls_priority_set_direct (session, opt.tls_ciphers_string, NULL);
+#else
+ logprintf (LOG_NOTQUIET, _("GnuTLS: Cannot set prio string directly. Falling back to default priority.\n"));
+ err = gnutls_set_default_priority (session);
+#endif
+ }
+
+ if (err < 0)
+ {
+ logprintf (LOG_NOTQUIET, "GnuTLS: %s\n", gnutls_strerror (err));
+ gnutls_deinit (session);
+ return false;
+ }
+
+ if (continue_session)
+ {
+ ctx = (struct wgnutls_transport_context *) fd_transport_context (*continue_session);
+ if (!gnutls_session_is_resumed (session))
+ {
+ if (!ctx || !ctx->session_data || gnutls_session_set_data (session, ctx->session_data->data, ctx->session_data->size))
+ {
+ if (ctx && ctx->session_data)
+ {
+ /* server does not want to continue the session */
+ if (ctx->session_data->data)
+ gnutls_free (ctx->session_data->data);
+ gnutls_free (ctx->session_data);
+ }
+ gnutls_deinit (session);
+ return false;
+ }
+ }
+ else
+ {
+ logputs (LOG_ALWAYS, "SSL session has already been resumed. Continuing.\n");
+ continue_session = NULL;
+ }
+ }
+
+ err = _do_handshake (session, fd, NULL);
+
+ if (err < 0)
+ {
+ gnutls_deinit (session);
+ return false;
+ }
+
+ ctx = xnew0 (struct wgnutls_transport_context);
+ ctx->session_data = xnew0 (gnutls_datum_t);
+ ctx->session = session;
+ if (gnutls_session_get_data2 (session, ctx->session_data))
+ {
+ xfree (ctx->session_data);
+ logprintf (LOG_NOTQUIET, "WARNING: Could not save SSL session data for socket %d\n", fd);
+ }
+ fd_register_transport (fd, &wgnutls_transport, ctx);
+ return true;
+}
+
+static bool
+pkp_pin_peer_pubkey (gnutls_x509_crt_t cert, const char *pinnedpubkey)
+{
+ /* Scratch */
+ size_t len1 = 0, len2 = 0;
+ char *buff1 = NULL;
+
+ gnutls_pubkey_t key = NULL;
+
+ /* Result is returned to caller */
+ int ret = 0;
+ bool result = false;
+
+ /* if a path wasn't specified, don't pin */
+ if (NULL == pinnedpubkey)
+ return true;
+
+ if (NULL == cert)
+ return result;
+
+ /* Begin Gyrations to get the public key */
+ gnutls_pubkey_init (&key);
+
+ ret = gnutls_pubkey_import_x509 (key, cert, 0);
+ if (ret < 0)
+ goto cleanup; /* failed */
+
+ ret = gnutls_pubkey_export (key, GNUTLS_X509_FMT_DER, NULL, &len1);
+ if (ret != GNUTLS_E_SHORT_MEMORY_BUFFER || len1 == 0)
+ goto cleanup; /* failed */
+
+ buff1 = xmalloc (len1);
+
+ len2 = len1;
+
+ ret = gnutls_pubkey_export (key, GNUTLS_X509_FMT_DER, buff1, &len2);
+ if (ret < 0 || len1 != len2)
+ goto cleanup; /* failed */
+
+ /* End Gyrations */
+
+ /* The one good exit point */
+ result = wg_pin_peer_pubkey (pinnedpubkey, buff1, len1);
+
+ cleanup:
+ if (NULL != key)
+ gnutls_pubkey_deinit (key);
+
+ xfree (buff1);
+
+ return result;
+}
+
+#define _CHECK_CERT(flag,msg) \
+ if (status & (flag))\
+ {\
+ logprintf (LOG_NOTQUIET, (msg),\
+ severity, quote (host));\
+ success = false;\
+ }
+
+bool
+ssl_check_certificate (int fd, const char *host)
+{
+ struct wgnutls_transport_context *ctx = fd_transport_context (fd);
+
+ unsigned int status;
+ int err;
+
+ /* If the user has specified --no-check-cert, we still want to warn
+ him about problems with the server's certificate. */
+ const char *severity = opt.check_cert ? _("ERROR") : _("WARNING");
+ bool success = true;
+ bool pinsuccess = opt.pinnedpubkey == NULL;
+
+ /* The user explicitly said to not check for the certificate. */
+ if (opt.check_cert == CHECK_CERT_QUIET && pinsuccess)
+ return success;
+
+ err = gnutls_certificate_verify_peers2 (ctx->session, &status);
+ if (err < 0)
+ {
+ logprintf (LOG_NOTQUIET, _("%s: No certificate presented by %s.\n"),
+ severity, quotearg_style (escape_quoting_style, host));
+ success = false;
+ goto out;
+ }
+
+ _CHECK_CERT (GNUTLS_CERT_INVALID, _("%s: The certificate of %s is not trusted.\n"));
+ _CHECK_CERT (GNUTLS_CERT_SIGNER_NOT_FOUND, _("%s: The certificate of %s doesn't have a known issuer.\n"));
+ _CHECK_CERT (GNUTLS_CERT_REVOKED, _("%s: The certificate of %s has been revoked.\n"));
+ _CHECK_CERT (GNUTLS_CERT_SIGNER_NOT_CA, _("%s: The certificate signer of %s was not a CA.\n"));
+ _CHECK_CERT (GNUTLS_CERT_INSECURE_ALGORITHM, _("%s: The certificate of %s was signed using an insecure algorithm.\n"));
+ _CHECK_CERT (GNUTLS_CERT_NOT_ACTIVATED, _("%s: The certificate of %s is not yet activated.\n"));
+ _CHECK_CERT (GNUTLS_CERT_EXPIRED, _("%s: The certificate of %s has expired.\n"));
+
+ if (gnutls_certificate_type_get (ctx->session) == GNUTLS_CRT_X509)
+ {
+ time_t now = time (NULL);
+ gnutls_x509_crt_t cert;
+ const gnutls_datum_t *cert_list;
+ unsigned int cert_list_size;
+ const char *sni_hostname;
+
+ if ((err = gnutls_x509_crt_init (&cert)) < 0)
+ {
+ logprintf (LOG_NOTQUIET, _("Error initializing X509 certificate: %s\n"),
+ gnutls_strerror (err));
+ success = false;
+ goto out;
+ }
+
+ cert_list = gnutls_certificate_get_peers (ctx->session, &cert_list_size);
+ if (!cert_list)
+ {
+ logprintf (LOG_NOTQUIET, _("No certificate found\n"));
+ success = false;
+ goto crt_deinit;
+ }
+ err = gnutls_x509_crt_import (cert, cert_list, GNUTLS_X509_FMT_DER);
+ if (err < 0)
+ {
+ logprintf (LOG_NOTQUIET, _("Error parsing certificate: %s\n"),
+ gnutls_strerror (err));
+ success = false;
+ goto crt_deinit;
+ }
+ if (now < gnutls_x509_crt_get_activation_time (cert))
+ {
+ logprintf (LOG_NOTQUIET, _("The certificate has not yet been activated\n"));
+ success = false;
+ }
+ if (now >= gnutls_x509_crt_get_expiration_time (cert))
+ {
+ logprintf (LOG_NOTQUIET, _("The certificate has expired\n"));
+ success = false;
+ }
+ sni_hostname = _sni_hostname(host);
+ if (!gnutls_x509_crt_check_hostname (cert, sni_hostname))
+ {
+ logprintf (LOG_NOTQUIET,
+ _("The certificate's owner does not match hostname %s\n"),
+ quote (sni_hostname));
+ success = false;
+ }
+ xfree(sni_hostname);
+
+ pinsuccess = pkp_pin_peer_pubkey (cert, opt.pinnedpubkey);
+ if (!pinsuccess)
+ {
+ logprintf (LOG_ALWAYS, _("The public key does not match pinned public key!\n"));
+ success = false;
+ }
+
+ crt_deinit:
+ gnutls_x509_crt_deinit (cert);
+ }
+ else
+ {
+ logprintf (LOG_NOTQUIET, _("Certificate must be X.509\n"));
+ success = false;
+ }
+
+ out:
+ /* never return true if pinsuccess fails */
+ return !pinsuccess ? false : (opt.check_cert == CHECK_CERT_ON ? success : true);
+}
diff --git a/src/hash.c b/src/hash.c
new file mode 100644
index 0000000..6609528
--- /dev/null
+++ b/src/hash.c
@@ -0,0 +1,813 @@
+/* Hash tables.
+ Copyright (C) 2000-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at
+your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+/* With -DSTANDALONE, this file can be compiled outside Wget source
+ tree. To test, also use -DTEST. */
+
+#ifndef STANDALONE
+# include "wget.h"
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <string.h>
+#include <limits.h>
+
+#ifndef STANDALONE
+/* Get Wget's utility headers. */
+# include "utils.h"
+#else
+/* Make do without them. */
+# define xnew(type) (xmalloc (sizeof (type)))
+# define xnew0(type) (xcalloc (1, sizeof (type)))
+# define xnew_array(type, len) (xmalloc ((len) * sizeof (type)))
+# define xfree(p) do { free ((void *) (p)); p = NULL; } while (0)
+
+# ifndef countof
+# define countof(x) (sizeof (x) / sizeof ((x)[0]))
+# endif
+# include <ctype.h>
+# define c_tolower(x) tolower ((unsigned char) (x))
+# include <stdint.h>
+#endif
+
+#include "hash.h"
+
+/* INTERFACE:
+
+ Hash tables are a technique used to implement mapping between
+ objects with near-constant-time access and storage. The table
+ associates keys to values, and a value can be very quickly
+ retrieved by providing the key. Fast lookup tables are typically
+ implemented as hash tables.
+
+ The entry points are
+ hash_table_new -- creates the table.
+ hash_table_destroy -- destroys the table.
+ hash_table_put -- establishes or updates key->value mapping.
+ hash_table_get -- retrieves value of key.
+ hash_table_get_pair -- get key/value pair for key.
+ hash_table_contains -- test whether the table contains key.
+ hash_table_remove -- remove key->value mapping for given key.
+ hash_table_for_each -- call function for each table entry.
+ hash_table_iterate -- iterate over entries in hash table.
+ hash_table_iter_next -- return next element during iteration.
+ hash_table_clear -- clear hash table contents.
+ hash_table_count -- return the number of entries in the table.
+
+ The hash table grows internally as new entries are added and is not
+ limited in size, except by available memory. The table doubles
+ with each resize, which ensures that the amortized time per
+ operation remains constant.
+
+ If not instructed otherwise, tables created by hash_table_new
+ consider the keys to be equal if their pointer values are the same.
+ You can use make_string_hash_table to create tables whose keys are
+ considered equal if their string contents are the same. In the
+ general case, the criterion of equality used to compare keys is
+ specified at table creation time with two callback functions,
+ "hash" and "test". The hash function transforms the key into an
+ arbitrary number that must be the same for two equal keys. The
+ test function accepts two keys and returns non-zero if they are to
+ be considered equal.
+
+ Note that neither keys nor values are copied when inserted into the
+ hash table, so they must exist for the lifetime of the table. This
+ means that e.g. the use of static strings is OK, but objects with a
+ shorter life-time probably need to be copied (with strdup() or the
+ like in the case of strings) before being inserted. */
+
+/* IMPLEMENTATION:
+
+ The hash table is implemented as an open-addressed table with
+ linear probing collision resolution.
+
+ The above means that all the cells (each cell containing a key and
+ a value pointer) are stored in a contiguous array. Array position
+ of each cell is determined by the hash value of its key and the
+ size of the table: location := hash(key) % size. If two different
+ keys end up on the same position (collide), the one that came
+ second is stored in the first unoccupied cell that follows it.
+ This collision resolution technique is called "linear probing".
+
+ There are more advanced collision resolution methods (quadratic
+ probing, double hashing), but we don't use them because they incur
+ more non-sequential access to the array, which results in worse CPU
+ cache behavior. Linear probing works well as long as the
+ count/size ratio (fullness) is kept below 75%. We make sure to
+ grow and rehash the table whenever this threshold is exceeded.
+
+ Collisions complicate deletion because simply clearing a cell
+ followed by previously collided entries would cause those neighbors
+ to not be picked up by find_cell later. One solution is to leave a
+ "tombstone" marker instead of clearing the cell, and another is to
+ recalculate the positions of adjacent cells. We take the latter
+ approach because it results in less bookkeeping garbage and faster
+ retrieval at the (slight) expense of deletion. */
+
+/* Maximum allowed fullness: when hash table's fullness exceeds this
+ value, the table is resized. */
+#define HASH_MAX_FULLNESS 0.75
+
+/* The hash table size is multiplied by this factor (and then rounded
+ to the next prime) with each resize. This guarantees infrequent
+ resizes. */
+#define HASH_RESIZE_FACTOR 2
+
+struct cell {
+ void *key;
+ void *value;
+};
+
+typedef unsigned long (*hashfun_t) (const void *);
+typedef int (*testfun_t) (const void *, const void *);
+
+struct hash_table {
+ hashfun_t hash_function;
+ testfun_t test_function;
+
+ struct cell *cells; /* contiguous array of cells. */
+ int size; /* size of the array. */
+
+ int count; /* number of occupied entries. */
+ int resize_threshold; /* after size exceeds this number of
+ entries, resize the table. */
+ int prime_offset; /* the offset of the current prime in
+ the prime table. */
+};
+
+/* We use the all-bits-set constant (INVALID_PTR) marker to mean that
+ a cell is empty. It is unaligned and therefore illegal as a
+ pointer. INVALID_PTR_CHAR (0xff) is the single-character constant
+ used to initialize the entire cells array as empty.
+
+ The all-bits-set value is a better choice than NULL because it
+ allows the use of NULL/0 keys. Since the keys are either integers
+ or pointers, the only key that cannot be used is the integer value
+ -1. This is acceptable because it still allows the use of
+ nonnegative integer keys. */
+
+#define INVALID_PTR ((void *) ~(uintptr_t) 0)
+#ifndef UCHAR_MAX
+# define UCHAR_MAX 0xff
+#endif
+#define INVALID_PTR_CHAR UCHAR_MAX
+
+/* Whether the cell C is occupied (non-empty). */
+#define CELL_OCCUPIED(c) ((c)->key != INVALID_PTR)
+
+/* Clear the cell C, i.e. mark it as empty (unoccupied). */
+#define CLEAR_CELL(c) ((c)->key = INVALID_PTR)
+
+/* "Next" cell is the cell following C, but wrapping back to CELLS
+ when C would reach CELLS+SIZE. */
+#define NEXT_CELL(c, cells, size) (c != cells + (size - 1) ? c + 1 : cells)
+
+/* Loop over occupied cells starting at C, terminating the loop when
+ an empty cell is encountered. */
+#define FOREACH_OCCUPIED_ADJACENT(c, cells, size) \
+ for (; CELL_OCCUPIED (c); c = NEXT_CELL (c, cells, size))
+
+/* Return the position of KEY in hash table SIZE large, hash function
+ being HASHFUN. */
+#define HASH_POSITION(key, hashfun, size) ((hashfun) (key) % size)
+
+/* Find a prime near, but greater than or equal to SIZE. The primes
+ are looked up from a table with a selection of primes convenient
+ for this purpose.
+
+ PRIME_OFFSET is a minor optimization: it specifies start position
+ for the search for the large enough prime. The final offset is
+ stored in the same variable. That way the list of primes does not
+ have to be scanned from the beginning each time around. */
+
+static int
+prime_size (int size, int *prime_offset)
+{
+ static const int primes[] = {
+ 13, 19, 29, 41, 59, 79, 107, 149, 197, 263, 347, 457, 599, 787, 1031,
+ 1361, 1777, 2333, 3037, 3967, 5167, 6719, 8737, 11369, 14783,
+ 19219, 24989, 32491, 42257, 54941, 71429, 92861, 120721, 156941,
+ 204047, 265271, 344857, 448321, 582821, 757693, 985003, 1280519,
+ 1664681, 2164111, 2813353, 3657361, 4754591, 6180989, 8035301,
+ 10445899, 13579681, 17653589, 22949669, 29834603, 38784989,
+ 50420551, 65546729, 85210757, 110774011, 144006217, 187208107,
+ 243370577, 316381771, 411296309, 534685237, 695090819, 903618083,
+ 1174703521, 1527114613, 1837299131, 2147483647
+ };
+ size_t i;
+
+ for (i = *prime_offset; i < countof (primes); i++)
+ if (primes[i] >= size)
+ {
+ /* Set the offset to the next prime. That is safe because,
+ next time we are called, it will be with a larger SIZE,
+ which means we could never return the same prime anyway.
+ (If that is not the case, the caller can simply reset
+ *prime_offset.) */
+ *prime_offset = i + 1;
+ return primes[i];
+ }
+
+ abort ();
+}
+
+static int cmp_pointer (const void *, const void *);
+
+/* Create a hash table with hash function HASH_FUNCTION and test
+ function TEST_FUNCTION. The table is empty (its count is 0), but
+ pre-allocated to store at least ITEMS items.
+
+ ITEMS is the number of items that the table can accept without
+ needing to resize. It is useful when creating a table that is to
+ be immediately filled with a known number of items. In that case,
+ the regrows are a waste of time, and specifying ITEMS correctly
+ will avoid them altogether.
+
+ Note that hash tables grow dynamically regardless of ITEMS. The
+ only use of ITEMS is to preallocate the table and avoid unnecessary
+ dynamic regrows. Don't bother making ITEMS prime because it's not
+ used as size unchanged. To start with a small table that grows as
+ needed, simply specify zero ITEMS.
+
+ If hash and test callbacks are not specified, identity mapping is
+ assumed, i.e. pointer values are used for key comparison. (Common
+ Lisp calls such tables EQ hash tables, and Java calls them
+ IdentityHashMaps.) If your keys require different comparison,
+ specify hash and test functions. For easy use of C strings as hash
+ keys, you can use the convenience functions make_string_hash_table
+ and make_nocase_string_hash_table. */
+
+struct hash_table *
+hash_table_new (int items,
+ unsigned long (*hash_function) (const void *),
+ int (*test_function) (const void *, const void *))
+{
+ int size;
+ struct hash_table *ht = xnew (struct hash_table);
+
+ ht->hash_function = hash_function ? hash_function : hash_pointer;
+ ht->test_function = test_function ? test_function : cmp_pointer;
+
+ /* If the size of struct hash_table ever becomes a concern, this
+ field can go. (Wget doesn't create many hashes.) */
+ ht->prime_offset = 0;
+
+ /* Calculate the size that ensures that the table will store at
+ least ITEMS keys without the need to resize. */
+ size = (int) (1 + items / HASH_MAX_FULLNESS);
+ size = prime_size (size, &ht->prime_offset);
+ ht->size = size;
+ ht->resize_threshold = (int) (size * HASH_MAX_FULLNESS);
+ /*assert (ht->resize_threshold >= items);*/
+
+ ht->cells = xnew_array (struct cell, ht->size);
+
+ /* Mark cells as empty. We use 0xff rather than 0 to mark empty
+ keys because it allows us to use NULL/0 as keys. */
+ memset (ht->cells, INVALID_PTR_CHAR, size * sizeof (struct cell));
+
+ ht->count = 0;
+
+ return ht;
+}
+
+/* Free the data associated with hash table HT. */
+
+void
+hash_table_destroy (struct hash_table *ht)
+{
+ xfree (ht->cells);
+ xfree (ht);
+}
+
+/* The heart of most functions in this file -- find the cell whose
+ KEY is equal to key, using linear probing. Returns the cell
+ that matches KEY, or the first empty cell if none matches. */
+
+static inline struct cell *
+find_cell (const struct hash_table *ht, const void *key)
+{
+ struct cell *cells = ht->cells;
+ int size = ht->size;
+ struct cell *c = cells + HASH_POSITION (key, ht->hash_function, size);
+ testfun_t equals = ht->test_function;
+
+ FOREACH_OCCUPIED_ADJACENT (c, cells, size)
+ if (equals (key, c->key))
+ break;
+ return c;
+}
+
+/* Get the value that corresponds to the key KEY in the hash table HT.
+ If no value is found, return NULL. Note that NULL is a legal value
+ for value; if you are storing NULLs in your hash table, you can use
+ hash_table_contains to be sure that a (possibly NULL) value exists
+ in the table. Or, you can use hash_table_get_pair instead of this
+ function. */
+
+void *
+hash_table_get (const struct hash_table *ht, const void *key)
+{
+ struct cell *c = find_cell (ht, key);
+ if (CELL_OCCUPIED (c))
+ return c->value;
+ else
+ return NULL;
+}
+
+/* Like hash_table_get, but writes out the pointers to both key and
+ value. Returns non-zero on success. */
+
+int
+hash_table_get_pair (const struct hash_table *ht, const void *lookup_key,
+ void *orig_key, void *value)
+{
+ struct cell *c = find_cell (ht, lookup_key);
+ if (CELL_OCCUPIED (c))
+ {
+ if (orig_key)
+ *(void **)orig_key = c->key;
+ if (value)
+ *(void **)value = c->value;
+ return 1;
+ }
+ else
+ return 0;
+}
+
+/* Return 1 if HT contains KEY, 0 otherwise. */
+
+int
+hash_table_contains (const struct hash_table *ht, const void *key)
+{
+ struct cell *c = find_cell (ht, key);
+ return CELL_OCCUPIED (c);
+}
+
+/* Grow hash table HT as necessary, and rehash all the key-value
+ mappings. */
+
+static void
+grow_hash_table (struct hash_table *ht)
+{
+ hashfun_t hasher = ht->hash_function;
+ struct cell *old_cells = ht->cells;
+ struct cell *old_end = ht->cells + ht->size;
+ struct cell *c, *cells;
+ int newsize;
+
+ newsize = prime_size (ht->size * HASH_RESIZE_FACTOR, &ht->prime_offset);
+#if 0
+ printf ("growing from %d to %d; fullness %.2f%% to %.2f%%\n",
+ ht->size, newsize,
+ 100.0 * ht->count / ht->size,
+ 100.0 * ht->count / newsize);
+#endif
+
+ ht->size = newsize;
+ ht->resize_threshold = (int) (newsize * HASH_MAX_FULLNESS);
+
+ cells = xnew_array (struct cell, newsize);
+ memset (cells, INVALID_PTR_CHAR, newsize * sizeof (struct cell));
+ ht->cells = cells;
+
+ for (c = old_cells; c < old_end; c++)
+ if (CELL_OCCUPIED (c))
+ {
+ struct cell *new_c;
+ /* We don't need to test for uniqueness of keys because they
+ come from the hash table and are therefore known to be
+ unique. */
+ new_c = cells + HASH_POSITION (c->key, hasher, newsize);
+ FOREACH_OCCUPIED_ADJACENT (new_c, cells, newsize)
+ ;
+ *new_c = *c;
+ }
+
+ xfree (old_cells);
+}
+
+/* Put VALUE in the hash table HT under the key KEY. This regrows the
+ table if necessary. */
+
+void
+hash_table_put (struct hash_table *ht, const void *key, const void *value)
+{
+ struct cell *c = find_cell (ht, key);
+ if (CELL_OCCUPIED (c))
+ {
+ /* update existing item */
+ c->key = (void *)key; /* const? */
+ c->value = (void *)value;
+ return;
+ }
+
+ /* If adding the item would make the table exceed max. fullness,
+ grow the table first. */
+ if (ht->count >= ht->resize_threshold)
+ {
+ grow_hash_table (ht);
+ c = find_cell (ht, key);
+ }
+
+ /* add new item */
+ ++ht->count;
+ c->key = (void *)key; /* const? */
+ c->value = (void *)value;
+}
+
+/* Remove KEY->value mapping from HT. Return 0 if there was no such
+ entry; return 1 if an entry was removed. */
+
+int
+hash_table_remove (struct hash_table *ht, const void *key)
+{
+ struct cell *c = find_cell (ht, key);
+ if (!CELL_OCCUPIED (c))
+ return 0;
+ else
+ {
+ int size = ht->size;
+ struct cell *cells = ht->cells;
+ hashfun_t hasher = ht->hash_function;
+
+ CLEAR_CELL (c);
+ --ht->count;
+
+ /* Rehash all the entries following C. The alternative
+ approach is to mark the entry as deleted, i.e. create a
+ "tombstone". That speeds up removal, but leaves a lot of
+ garbage and slows down hash_table_get and hash_table_put. */
+
+ c = NEXT_CELL (c, cells, size);
+ FOREACH_OCCUPIED_ADJACENT (c, cells, size)
+ {
+ const void *key2 = c->key;
+ struct cell *c_new;
+
+ /* Find the new location for the key. */
+ c_new = cells + HASH_POSITION (key2, hasher, size);
+ FOREACH_OCCUPIED_ADJACENT (c_new, cells, size)
+ if (key2 == c_new->key)
+ /* The cell C (key2) is already where we want it (in
+ C_NEW's "chain" of keys.) */
+ goto next_rehash;
+
+ *c_new = *c;
+ CLEAR_CELL (c);
+
+ next_rehash:
+ ;
+ }
+ return 1;
+ }
+}
+
+/* Clear HT of all entries. After calling this function, the count
+ and the fullness of the hash table will be zero. The size will
+ remain unchanged. */
+
+void
+hash_table_clear (struct hash_table *ht)
+{
+ memset (ht->cells, INVALID_PTR_CHAR, ht->size * sizeof (struct cell));
+ ht->count = 0;
+}
+
+/* Call FN for each entry in HT. FN is called with three arguments:
+ the key, the value, and ARG. When FN returns a non-zero value, the
+ mapping stops.
+
+ It is undefined what happens if you add or remove entries in the
+ hash table while hash_table_for_each is running. The exception is
+ the entry you're currently mapping over; you may call
+ hash_table_put or hash_table_remove on that entry's key. That is
+ also the reason why this function cannot be implemented in terms of
+ hash_table_iterate. */
+
+void
+hash_table_for_each (struct hash_table *ht,
+ int (*fn) (void *, void *, void *), void *arg)
+{
+ struct cell *c = ht->cells;
+ struct cell *end = ht->cells + ht->size;
+
+ for (; c < end; c++)
+ if (CELL_OCCUPIED (c))
+ {
+ void *key;
+ repeat:
+ key = c->key;
+ if (fn (key, c->value, arg))
+ return;
+ /* hash_table_remove might have moved the adjacent cells. */
+ if (c->key != key && CELL_OCCUPIED (c))
+ goto repeat;
+ }
+}
+
+/* Initiate iteration over HT. Entries are obtained with
+ hash_table_iter_next, a typical iteration loop looking like this:
+
+ hash_table_iterator iter;
+ for (hash_table_iterate (ht, &iter); hash_table_iter_next (&iter); )
+ ... do something with iter.key and iter.value ...
+
+ The iterator does not need to be deallocated after use. The hash
+ table must not be modified while being iterated over. */
+
+void
+hash_table_iterate (struct hash_table *ht, hash_table_iterator *iter)
+{
+ iter->pos = ht->cells;
+ iter->end = ht->cells + ht->size;
+}
+
+/* Get the next hash table entry. ITER is an iterator object
+ initialized using hash_table_iterate. While there are more
+ entries, the key and value pointers are stored to ITER->key and
+ ITER->value respectively and 1 is returned. When there are no more
+ entries, 0 is returned.
+
+ If the hash table is modified between calls to this function, the
+ result is undefined. */
+
+int
+hash_table_iter_next (hash_table_iterator *iter)
+{
+ struct cell *c = iter->pos;
+ struct cell *end = iter->end;
+ for (; c < end; c++)
+ if (CELL_OCCUPIED (c))
+ {
+ iter->key = c->key;
+ iter->value = c->value;
+ iter->pos = c + 1;
+ return 1;
+ }
+ return 0;
+}
+
+/* Return the number of elements in the hash table. This is not the
+ same as the physical size of the hash table, which is always
+ greater than the number of elements. */
+
+int
+hash_table_count (const struct hash_table *ht)
+{
+ return ht->count;
+}
+
+/* Functions from this point onward are meant for convenience and
+ don't strictly belong to this file. However, this is as good a
+ place for them as any. */
+
+/* Guidelines for creating custom hash and test functions:
+
+ - The test function returns non-zero for keys that are considered
+ "equal", zero otherwise.
+
+ - The hash function returns a number that represents the
+ "distinctness" of the object. In more precise terms, it means
+ that for any two objects that test "equal" under the test
+ function, the hash function MUST produce the same result.
+
+ This does not mean that all different objects must produce
+ different values (that would be "perfect" hashing), only that
+ non-distinct objects must produce the same values! For instance,
+ a hash function that returns 0 for any given object is a
+ perfectly valid (albeit extremely bad) hash function. A hash
+ function that hashes a string by adding up all its characters is
+ another example of a valid (but still quite bad) hash function.
+
+ It is not hard to make hash and test functions agree about
+ equality. For example, if the test function compares strings
+ case-insensitively, the hash function can lower-case the
+ characters when calculating the hash value. That ensures that
+ two strings differing only in case will hash the same.
+
+ - To prevent performance degradation, choose a hash function with
+ as good "spreading" as possible. A good hash function will use
+ all the bits of the input when calculating the hash, and will
+ react to even small changes in input with a completely different
+ output. But don't make the hash function itself overly slow,
+ because you'll be incurring a non-negligible overhead to all hash
+ table operations. */
+
+/*
+ * Support for hash tables whose keys are strings.
+ *
+ */
+
+/* Base 31 hash function. Taken from Gnome's glib, modified to use
+ standard C types.
+
+ We used to use the popular hash function from the Dragon Book, but
+ this one seems to perform much better, both by being faster and by
+ generating less collisions. */
+
+#ifdef __clang__
+__attribute__((no_sanitize("integer")))
+#endif
+static unsigned long
+hash_string (const void *key)
+{
+ const char *p = key;
+ unsigned int h = *p;
+
+ if (h)
+ for (p += 1; *p != '\0'; p++)
+ h = (h << 5) - h + *p;
+
+ return h;
+}
+
+/* Frontend for strcmp usable for hash tables. */
+
+static int
+cmp_string (const void *s1, const void *s2)
+{
+ return !strcmp ((const char *)s1, (const char *)s2);
+}
+
+/* Return a hash table of preallocated to store at least ITEMS items
+ suitable to use strings as keys. */
+
+struct hash_table *
+make_string_hash_table (int items)
+{
+ return hash_table_new (items, hash_string, cmp_string);
+}
+
+/*
+ * Support for hash tables whose keys are strings, but which are
+ * compared case-insensitively.
+ *
+ */
+
+/* Like hash_string, but produce the same hash regardless of the case. */
+
+#ifdef __clang__
+__attribute__((no_sanitize("integer")))
+#endif
+static unsigned long
+hash_string_nocase (const void *key)
+{
+ const char *p = key;
+ unsigned int h = c_tolower (*p);
+
+ if (h)
+ for (p += 1; *p != '\0'; p++)
+ h = (h << 5) - h + c_tolower (*p);
+
+ return h;
+}
+
+/* Like string_cmp, but doing case-insensitive comparison. */
+
+static int
+string_cmp_nocase (const void *s1, const void *s2)
+{
+ return !strcasecmp ((const char *)s1, (const char *)s2);
+}
+
+/* Like make_string_hash_table, but uses string_hash_nocase and
+ string_cmp_nocase. */
+
+struct hash_table *
+make_nocase_string_hash_table (int items)
+{
+ return hash_table_new (items, hash_string_nocase, string_cmp_nocase);
+}
+
+/* Hashing of numeric values, such as pointers and integers.
+
+ This implementation is the Robert Jenkins' 32 bit Mix Function,
+ with a simple adaptation for 64-bit values. According to Jenkins
+ it should offer excellent spreading of values. Unlike the popular
+ Knuth's multiplication hash, this function doesn't need to know the
+ hash table size to work. */
+
+#ifdef __clang__
+__attribute__((no_sanitize("integer")))
+#endif
+unsigned long
+hash_pointer (const void *ptr)
+{
+ uintptr_t key = (uintptr_t) ptr;
+ key += (key << 12);
+ key ^= (key >> 22);
+ key += (key << 4);
+ key ^= (key >> 9);
+ key += (key << 10);
+ key ^= (key >> 2);
+ key += (key << 7);
+ key ^= (key >> 12);
+#if SIZEOF_VOID_P > 4
+ key += (key << 44);
+ key ^= (key >> 54);
+ key += (key << 36);
+ key ^= (key >> 41);
+ key += (key << 42);
+ key ^= (key >> 34);
+ key += (key << 39);
+ key ^= (key >> 44);
+#endif
+ return (unsigned long) key;
+}
+
+static int
+cmp_pointer (const void *ptr1, const void *ptr2)
+{
+ return ptr1 == ptr2;
+}
+
+#ifdef TEST
+
+#include <stdio.h>
+#include <string.h>
+
+void
+print_hash (struct hash_table *sht)
+{
+ hash_table_iterator iter;
+ int count = 0;
+
+ for (hash_table_iterate (sht, &iter); hash_table_iter_next (&iter);
+ ++count)
+ printf ("%s: %s\n", iter.key, iter.value);
+ assert (count == sht->count);
+}
+
+int
+main (void)
+{
+ struct hash_table *ht = make_string_hash_table (0);
+ char line[80];
+
+#ifdef ENABLE_NLS
+ /* Set the current locale. */
+ setlocale (LC_ALL, "");
+ /* Set the text message domain. */
+ bindtextdomain ("wget", LOCALEDIR);
+ textdomain ("wget");
+#endif /* ENABLE_NLS */
+
+ while ((fgets (line, sizeof (line), stdin)))
+ {
+ int len = strlen (line);
+ if (len <= 1)
+ continue;
+ line[--len] = '\0';
+ if (!hash_table_contains (ht, line))
+ hash_table_put (ht, strdup (line), "here I am!");
+#if 1
+ if (len % 5 == 0)
+ {
+ char *line_copy;
+ if (hash_table_get_pair (ht, line, &line_copy, NULL))
+ {
+ hash_table_remove (ht, line);
+ xfree (line_copy);
+ }
+ }
+#endif
+ }
+#if 0
+ print_hash (ht);
+#endif
+#if 1
+ printf ("%d %d\n", ht->count, ht->size);
+#endif
+ return 0;
+}
+#endif /* TEST */
diff --git a/src/hash.h b/src/hash.h
new file mode 100644
index 0000000..b8f7965
--- /dev/null
+++ b/src/hash.h
@@ -0,0 +1,66 @@
+/* Hash table declarations.
+ Copyright (C) 2000, 2007-2011, 2015, 2018-2020 Free Software
+ Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef HASH_H
+#define HASH_H
+
+struct hash_table;
+
+struct hash_table *hash_table_new (int, unsigned long (*) (const void *),
+ int (*) (const void *, const void *));
+void hash_table_destroy (struct hash_table *);
+
+void *hash_table_get (const struct hash_table *, const void *);
+int hash_table_get_pair (const struct hash_table *, const void *,
+ void *, void *);
+int hash_table_contains (const struct hash_table *, const void *);
+
+void hash_table_put (struct hash_table *, const void *, const void *);
+int hash_table_remove (struct hash_table *, const void *);
+void hash_table_clear (struct hash_table *);
+
+void hash_table_for_each (struct hash_table *,
+ int (*) (void *, void *, void *), void *);
+
+typedef struct {
+ void *key, *value; /* public members */
+ void *pos, *end; /* private members */
+} hash_table_iterator;
+void hash_table_iterate (struct hash_table *, hash_table_iterator *);
+int hash_table_iter_next (hash_table_iterator *);
+
+int hash_table_count (const struct hash_table *);
+
+struct hash_table *make_string_hash_table (int);
+struct hash_table *make_nocase_string_hash_table (int);
+
+unsigned long hash_pointer (const void *);
+
+#endif /* HASH_H */
diff --git a/src/host.c b/src/host.c
new file mode 100644
index 0000000..353c1cc
--- /dev/null
+++ b/src/host.c
@@ -0,0 +1,1082 @@
+/* Host name resolution and matching.
+ Copyright (C) 1996-2012, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#ifndef WINDOWS
+# include <sys/types.h>
+# include <sys/socket.h>
+# include <netinet/in.h>
+# ifndef __BEOS__
+# include <arpa/inet.h>
+# endif
+# ifdef __VMS
+# include "vms_ip.h"
+# else /* def __VMS */
+# include <netdb.h>
+# endif /* def __VMS [else] */
+# define SET_H_ERRNO(err) ((void)(h_errno = (err)))
+#else /* WINDOWS */
+# include <winsock2.h>
+# include <ws2tcpip.h>
+# define SET_H_ERRNO(err) WSASetLastError (err)
+#endif /* WINDOWS */
+
+#include <errno.h>
+
+#include "utils.h"
+#include "host.h"
+#include "url.h"
+#include "hash.h"
+#include "ptimer.h"
+
+#ifndef NO_ADDRESS
+# define NO_ADDRESS NO_DATA
+#endif
+
+#if !HAVE_DECL_H_ERRNO && !defined(WINDOWS)
+extern int h_errno;
+#endif
+
+
+/* Lists of IP addresses that result from running DNS queries. See
+ lookup_host for details. */
+
+struct address_list {
+ int count; /* number of addresses */
+ ip_address *addresses; /* pointer to the string of addresses */
+
+ int faulty; /* number of addresses known not to work. */
+ bool connected; /* whether we were able to connect to
+ one of the addresses in the list,
+ at least once. */
+
+ int refcount; /* reference count; when it drops to
+ 0, the entry is freed. */
+};
+
+/* Get the bounds of the address list. */
+
+void
+address_list_get_bounds (const struct address_list *al, int *start, int *end)
+{
+ *start = al->faulty;
+ *end = al->count;
+}
+
+/* Return a pointer to the address at position POS. */
+
+const ip_address *
+address_list_address_at (const struct address_list *al, int pos)
+{
+ assert (pos >= al->faulty && pos < al->count);
+ return al->addresses + pos;
+}
+
+/* Return true if AL contains IP, false otherwise. */
+
+bool
+address_list_contains (const struct address_list *al, const ip_address *ip)
+{
+ int i;
+ switch (ip->family)
+ {
+ case AF_INET:
+ for (i = 0; i < al->count; i++)
+ {
+ ip_address *cur = al->addresses + i;
+ if (cur->family == AF_INET
+ && (cur->data.d4.s_addr == ip->data.d4.s_addr))
+ return true;
+ }
+ return false;
+#ifdef ENABLE_IPV6
+ case AF_INET6:
+ for (i = 0; i < al->count; i++)
+ {
+ ip_address *cur = al->addresses + i;
+ if (cur->family == AF_INET6
+#ifdef HAVE_SOCKADDR_IN6_SCOPE_ID
+ && cur->ipv6_scope == ip->ipv6_scope
+#endif
+ && IN6_ARE_ADDR_EQUAL (&cur->data.d6, &ip->data.d6))
+ return true;
+ }
+ return false;
+#endif /* ENABLE_IPV6 */
+ default:
+ abort ();
+ }
+}
+
+/* Mark the INDEXth element of AL as faulty, so that the next time
+ this address list is used, the faulty element will be skipped. */
+
+void
+address_list_set_faulty (struct address_list *al, int index)
+{
+ /* We assume that the address list is traversed in order, so that a
+ "faulty" attempt is always preceded with all-faulty addresses,
+ and this is how Wget uses it. */
+ assert (index == al->faulty);
+ if (index != al->faulty)
+ {
+ logprintf (LOG_ALWAYS, "index: %d\nal->faulty: %d\n", index, al->faulty);
+ logprintf (LOG_ALWAYS, _("Error in handling the address list.\n"));
+ logprintf (LOG_ALWAYS, _("Please report this issue to bug-wget@gnu.org\n"));
+ abort();
+ }
+
+ ++al->faulty;
+ if (al->faulty >= al->count)
+ /* All addresses have been proven faulty. Since there's not much
+ sense in returning the user an empty address list the next
+ time, we'll rather make them all clean, so that they can be
+ retried anew. */
+ al->faulty = 0;
+}
+
+/* Set the "connected" flag to true. This flag used by connect.c to
+ see if the host perhaps needs to be resolved again. */
+
+void
+address_list_set_connected (struct address_list *al)
+{
+ al->connected = true;
+}
+
+/* Return the value of the "connected" flag. */
+
+bool
+address_list_connected_p (const struct address_list *al)
+{
+ return al->connected;
+}
+
+#ifdef ENABLE_IPV6
+
+/* Create an address_list from the addresses in the given struct
+ addrinfo. */
+
+static struct address_list *
+address_list_from_addrinfo (const struct addrinfo *ai)
+{
+ struct address_list *al;
+ const struct addrinfo *ptr;
+ int cnt;
+ ip_address *ip;
+
+ cnt = 0;
+ for (ptr = ai; ptr != NULL ; ptr = ptr->ai_next)
+ if (ptr->ai_family == AF_INET || ptr->ai_family == AF_INET6)
+ ++cnt;
+ if (cnt == 0)
+ return NULL;
+
+ al = xnew0 (struct address_list);
+ al->addresses = xnew_array (ip_address, cnt);
+ al->count = cnt;
+ al->refcount = 1;
+
+ ip = al->addresses;
+ for (ptr = ai; ptr != NULL; ptr = ptr->ai_next)
+ if (ptr->ai_family == AF_INET6)
+ {
+ const struct sockaddr_in6 *sin6 =
+ (const struct sockaddr_in6 *)ptr->ai_addr;
+ ip->family = AF_INET6;
+ ip->data.d6 = sin6->sin6_addr;
+#ifdef HAVE_SOCKADDR_IN6_SCOPE_ID
+ ip->ipv6_scope = sin6->sin6_scope_id;
+#endif
+ ++ip;
+ }
+ else if (ptr->ai_family == AF_INET)
+ {
+ const struct sockaddr_in *sin =
+ (const struct sockaddr_in *)ptr->ai_addr;
+ ip->family = AF_INET;
+ ip->data.d4 = sin->sin_addr;
+ ++ip;
+ }
+ assert (ip - al->addresses == cnt);
+ return al;
+}
+
+#define IS_IPV4(addr) (((const ip_address *) addr)->family == AF_INET)
+
+/* Compare two IP addresses by family, giving preference to the IPv4
+ address (sorting it first). In other words, return -1 if ADDR1 is
+ IPv4 and ADDR2 is IPv6, +1 if ADDR1 is IPv6 and ADDR2 is IPv4, and
+ 0 otherwise.
+
+ This is intended to be used as the comparator arg to a qsort-like
+ sorting function, which is why it accepts generic pointers. */
+
+static int
+cmp_prefer_ipv4 (const void *addr1, const void *addr2)
+{
+ return !IS_IPV4 (addr1) - !IS_IPV4 (addr2);
+}
+
+#define IS_IPV6(addr) (((const ip_address *) addr)->family == AF_INET6)
+
+/* Like the above, but give preference to the IPv6 address. */
+
+static int
+cmp_prefer_ipv6 (const void *addr1, const void *addr2)
+{
+ return !IS_IPV6 (addr1) - !IS_IPV6 (addr2);
+}
+
+#else /* not ENABLE_IPV6 */
+
+/* Create an address_list from a NULL-terminated vector of IPv4
+ addresses. This kind of vector is returned by gethostbyname. */
+
+static struct address_list *
+address_list_from_ipv4_addresses (char **vec)
+{
+ int count, i;
+ struct address_list *al = xnew0 (struct address_list);
+
+ count = 0;
+ while (vec[count])
+ ++count;
+ assert (count > 0);
+
+ al->addresses = xnew_array (ip_address, count);
+ al->count = count;
+ al->refcount = 1;
+
+ for (i = 0; i < count; i++)
+ {
+ ip_address *ip = &al->addresses[i];
+ ip->family = AF_INET;
+ memcpy (IP_INADDR_DATA (ip), vec[i], 4);
+ }
+
+ return al;
+}
+
+#endif /* not ENABLE_IPV6 */
+
+static void
+address_list_delete (struct address_list *al)
+{
+ xfree (al->addresses);
+ xfree (al);
+}
+
+/* Mark the address list as being no longer in use. This will reduce
+ its reference count which will cause the list to be freed when the
+ count reaches 0. */
+
+void
+address_list_release (struct address_list *al)
+{
+ --al->refcount;
+ DEBUGP (("Releasing 0x%0*lx (new refcount %d).\n", PTR_FORMAT (al),
+ al->refcount));
+ if (al->refcount <= 0)
+ {
+ DEBUGP (("Deleting unused 0x%0*lx.\n", PTR_FORMAT (al)));
+ address_list_delete (al);
+ }
+}
+
+/* Versions of gethostbyname and getaddrinfo that support timeout. */
+
+#ifndef ENABLE_IPV6
+
+struct ghbnwt_context {
+ const char *host_name;
+ struct hostent *hptr;
+};
+
+static void
+gethostbyname_with_timeout_callback (void *arg)
+{
+ struct ghbnwt_context *ctx = (struct ghbnwt_context *)arg;
+ ctx->hptr = gethostbyname (ctx->host_name);
+}
+
+/* Just like gethostbyname, except it times out after TIMEOUT seconds.
+ In case of timeout, NULL is returned and errno is set to ETIMEDOUT.
+ The function makes sure that when NULL is returned for reasons
+ other than timeout, errno is reset. */
+
+static struct hostent *
+gethostbyname_with_timeout (const char *host_name, double timeout)
+{
+ struct ghbnwt_context ctx;
+ ctx.host_name = host_name;
+ if (run_with_timeout (timeout, gethostbyname_with_timeout_callback, &ctx))
+ {
+ SET_H_ERRNO (HOST_NOT_FOUND);
+ errno = ETIMEDOUT;
+ return NULL;
+ }
+ if (!ctx.hptr)
+ errno = 0;
+ return ctx.hptr;
+}
+
+/* Print error messages for host errors. */
+static const char *
+host_errstr (int error)
+{
+ /* Can't use switch since some of these constants can be equal,
+ which makes the compiler complain about duplicate case
+ values. */
+ if (error == HOST_NOT_FOUND
+ || error == NO_RECOVERY
+ || error == NO_DATA
+ || error == NO_ADDRESS)
+ return _("Unknown host");
+ else if (error == TRY_AGAIN)
+ /* Message modeled after what gai_strerror returns in similar
+ circumstances. */
+ return _("Temporary failure in name resolution");
+ else
+ return _("Unknown error");
+}
+
+#else /* ENABLE_IPV6 */
+
+struct gaiwt_context {
+ const char *node;
+ const char *service;
+ const struct addrinfo *hints;
+ struct addrinfo **res;
+ int exit_code;
+};
+
+static void
+getaddrinfo_with_timeout_callback (void *arg)
+{
+ struct gaiwt_context *ctx = (struct gaiwt_context *)arg;
+ ctx->exit_code = getaddrinfo (ctx->node, ctx->service, ctx->hints, ctx->res);
+}
+
+/* Just like getaddrinfo, except it times out after TIMEOUT seconds.
+ In case of timeout, the EAI_SYSTEM error code is returned and errno
+ is set to ETIMEDOUT. */
+
+static int
+getaddrinfo_with_timeout (const char *node, const char *service,
+ const struct addrinfo *hints, struct addrinfo **res,
+ double timeout)
+{
+ struct gaiwt_context ctx;
+ ctx.node = node;
+ ctx.service = service;
+ ctx.hints = hints;
+ ctx.res = res;
+
+ if (run_with_timeout (timeout, getaddrinfo_with_timeout_callback, &ctx))
+ {
+ errno = ETIMEDOUT;
+ return EAI_SYSTEM;
+ }
+ return ctx.exit_code;
+}
+
+#endif /* ENABLE_IPV6 */
+
+/* Return a textual representation of ADDR, i.e. the dotted quad for
+ IPv4 addresses, and the colon-separated list of hex words (with all
+ zeros omitted, etc.) for IPv6 addresses. */
+
+const char *
+print_address (const ip_address *addr)
+{
+ static char buf[64];
+
+ if (!inet_ntop (addr->family, IP_INADDR_DATA (addr), buf, sizeof buf))
+ snprintf (buf, sizeof buf, "<error: %s>", strerror (errno));
+
+ return buf;
+}
+
+/* The following two functions were adapted from glibc's
+ implementation of inet_pton, written by Paul Vixie. */
+
+static bool
+is_valid_ipv4_address (const char *str, const char *end)
+{
+ bool saw_digit = false;
+ int octets = 0;
+ int val = 0;
+
+ while (str < end)
+ {
+ int ch = *str++;
+
+ if (ch >= '0' && ch <= '9')
+ {
+ val = val * 10 + (ch - '0');
+
+ if (val > 255)
+ return false;
+ if (!saw_digit)
+ {
+ if (++octets > 4)
+ return false;
+ saw_digit = true;
+ }
+ }
+ else if (ch == '.' && saw_digit)
+ {
+ if (octets == 4)
+ return false;
+ val = 0;
+ saw_digit = false;
+ }
+ else
+ return false;
+ }
+ if (octets < 4)
+ return false;
+
+ return true;
+}
+
+bool
+is_valid_ipv6_address (const char *str, const char *end)
+{
+ /* Use lower-case for these to avoid clash with system headers. */
+ enum {
+ ns_inaddrsz = 4,
+ ns_in6addrsz = 16,
+ ns_int16sz = 2
+ };
+
+ const char *curtok;
+ int tp;
+ const char *colonp;
+ bool saw_xdigit;
+ unsigned int val;
+
+ tp = 0;
+ colonp = NULL;
+
+ if (str == end)
+ return false;
+
+ /* Leading :: requires some special handling. */
+ if (*str == ':')
+ {
+ ++str;
+ if (str == end || *str != ':')
+ return false;
+ }
+
+ curtok = str;
+ saw_xdigit = false;
+ val = 0;
+
+ while (str < end)
+ {
+ int ch = *str++;
+
+ /* if ch is a number, add it to val. */
+ if (c_isxdigit (ch))
+ {
+ val <<= 4;
+ val |= _unhex (ch);
+ if (val > 0xffff)
+ return false;
+ saw_xdigit = true;
+ continue;
+ }
+
+ /* if ch is a colon ... */
+ if (ch == ':')
+ {
+ curtok = str;
+ if (!saw_xdigit)
+ {
+ if (colonp != NULL)
+ return false;
+ colonp = str + tp;
+ continue;
+ }
+ else if (str == end)
+ return false;
+ if (tp > ns_in6addrsz - ns_int16sz)
+ return false;
+ tp += ns_int16sz;
+ saw_xdigit = false;
+ val = 0;
+ continue;
+ }
+
+ /* if ch is a dot ... */
+ if (ch == '.' && (tp <= ns_in6addrsz - ns_inaddrsz)
+ && is_valid_ipv4_address (curtok, end) == 1)
+ {
+ tp += ns_inaddrsz;
+ saw_xdigit = false;
+ break;
+ }
+
+ return false;
+ }
+
+ if (saw_xdigit)
+ {
+ if (tp > ns_in6addrsz - ns_int16sz)
+ return false;
+ tp += ns_int16sz;
+ }
+
+ if (colonp != NULL)
+ {
+ if (tp == ns_in6addrsz)
+ return false;
+ tp = ns_in6addrsz;
+ }
+
+ if (tp != ns_in6addrsz)
+ return false;
+
+ return true;
+}
+
+/* Simple host cache, used by lookup_host to speed up resolving. The
+ cache doesn't handle TTL because Wget is a fairly short-lived
+ application. Refreshing is attempted when connect fails, though --
+ see connect_to_host. */
+
+/* Mapping between known hosts and to lists of their addresses. */
+static struct hash_table *host_name_addresses_map;
+
+
+/* Return the host's resolved addresses from the cache, if
+ available. */
+
+static struct address_list *
+cache_query (const char *host)
+{
+ struct address_list *al;
+ if (!host_name_addresses_map)
+ return NULL;
+ al = hash_table_get (host_name_addresses_map, host);
+ if (al)
+ {
+ DEBUGP (("Found %s in host_name_addresses_map (%p)\n", host, (void *) al));
+ ++al->refcount;
+ return al;
+ }
+ return NULL;
+}
+
+/* Cache the DNS lookup of HOST. Subsequent invocations of
+ lookup_host will return the cached value. */
+
+static void
+cache_store (const char *host, struct address_list *al)
+{
+ if (!host_name_addresses_map)
+ host_name_addresses_map = make_nocase_string_hash_table (0);
+
+ ++al->refcount;
+ hash_table_put (host_name_addresses_map, xstrdup_lower (host), al);
+
+ IF_DEBUG
+ {
+ int i;
+ debug_logprintf ("Caching %s =>", host);
+ for (i = 0; i < al->count; i++)
+ debug_logprintf (" %s", print_address (al->addresses + i));
+ debug_logprintf ("\n");
+ }
+}
+
+/* Remove HOST from the DNS cache. Does nothing is HOST is not in
+ the cache. */
+
+static void
+cache_remove (const char *host)
+{
+ struct address_list *al;
+ if (!host_name_addresses_map)
+ return;
+ al = hash_table_get (host_name_addresses_map, host);
+ if (al)
+ {
+ address_list_release (al);
+ hash_table_remove (host_name_addresses_map, host);
+ }
+}
+
+#ifdef HAVE_LIBCARES
+#include <sys/select.h>
+#include <ares.h>
+extern ares_channel ares;
+
+static struct address_list *
+merge_address_lists (struct address_list *al1, struct address_list *al2)
+{
+ int count = al1->count + al2->count;
+
+ /* merge al2 into al1 */
+ al1->addresses = xrealloc (al1->addresses, sizeof (ip_address) * count);
+ memcpy (al1->addresses + al1->count, al2->addresses, sizeof (ip_address) * al2->count);
+ al1->count = count;
+
+ address_list_delete (al2);
+
+ return al1;
+}
+
+static struct address_list *
+address_list_from_hostent (struct hostent *host)
+{
+ int count, i;
+ struct address_list *al = xnew0 (struct address_list);
+
+ for (count = 0; host->h_addr_list[count]; count++)
+ ;
+
+ assert (count > 0);
+
+ al->addresses = xnew_array (ip_address, count);
+ al->count = count;
+ al->refcount = 1;
+
+ for (i = 0; i < count; i++)
+ {
+ ip_address *ip = &al->addresses[i];
+ ip->family = host->h_addrtype;
+ memcpy (IP_INADDR_DATA (ip), host->h_addr_list[i], ip->family == AF_INET ? 4 : 16);
+ }
+
+ return al;
+}
+
+/* Since GnuLib's select() (i.e. rpl_select()) cannot handle socket-numbers
+ * returned from C-ares, we must use the original select() from Winsock.
+ */
+#ifdef WINDOWS
+#undef select
+#endif
+
+static void
+wait_ares (ares_channel channel)
+{
+ struct ptimer *timer = NULL;
+
+ if (opt.dns_timeout)
+ timer = ptimer_new ();
+
+ for (;;)
+ {
+ struct timeval *tvp, tv;
+ fd_set read_fds, write_fds;
+ int nfds, rc;
+
+ FD_ZERO (&read_fds);
+ FD_ZERO (&write_fds);
+ nfds = ares_fds (channel, &read_fds, &write_fds);
+ if (nfds == 0)
+ break;
+
+ if (timer)
+ {
+ double max = opt.dns_timeout - ptimer_measure (timer);
+
+ tv.tv_sec = (long) max;
+ tv.tv_usec = 1000000 * (max - (long) max);
+ tvp = ares_timeout (channel, &tv, &tv);
+ }
+ else
+ tvp = ares_timeout (channel, NULL, &tv);
+
+ rc = select (nfds, &read_fds, &write_fds, NULL, tvp);
+ if (rc == 0 && timer && ptimer_measure (timer) >= opt.dns_timeout)
+ ares_cancel (channel);
+ else
+ ares_process (channel, &read_fds, &write_fds);
+ }
+ if (timer)
+ ptimer_destroy (timer);
+}
+
+static void
+callback (void *arg, int status, int timeouts _GL_UNUSED, struct hostent *host)
+{
+ struct address_list **al = (struct address_list **) arg;
+
+ if (!host || status != ARES_SUCCESS)
+ {
+ *al = NULL;
+ return;
+ }
+
+ *al = address_list_from_hostent (host);
+}
+#endif
+
+/* Look up HOST in DNS and return a list of IP addresses.
+
+ This function caches its result so that, if the same host is passed
+ the second time, the addresses are returned without DNS lookup.
+ (Use LH_REFRESH to force lookup, or set opt.dns_cache to 0 to
+ globally disable caching.)
+
+ The order of the returned addresses is affected by the setting of
+ opt.prefer_family: if it is set to prefer_ipv4, IPv4 addresses are
+ placed at the beginning; if it is prefer_ipv6, IPv6 ones are placed
+ at the beginning; otherwise, the order is left intact. The
+ relative order of addresses with the same family is left
+ undisturbed in either case.
+
+ FLAGS can be a combination of:
+ LH_SILENT - don't print the "resolving ... done" messages.
+ LH_BIND - resolve addresses for use with bind, which under
+ IPv6 means to use AI_PASSIVE flag to getaddrinfo.
+ Passive lookups are not cached under IPv6.
+ LH_REFRESH - if HOST is cached, remove the entry from the cache
+ and resolve it anew. */
+
+struct address_list *
+lookup_host (const char *host, int flags)
+{
+ struct address_list *al;
+ bool silent = !!(flags & LH_SILENT);
+ bool use_cache;
+ bool numeric_address = false;
+ double timeout = opt.dns_timeout;
+
+#ifndef ENABLE_IPV6
+ /* If we're not using getaddrinfo, first check if HOST specifies a
+ numeric IPv4 address. Some implementations of gethostbyname
+ (e.g. the Ultrix one and possibly Winsock) don't accept
+ dotted-decimal IPv4 addresses. */
+ {
+ uint32_t addr_ipv4 = (uint32_t)inet_addr (host);
+ if (addr_ipv4 != (uint32_t) -1)
+ {
+ /* No need to cache host->addr relation, just return the
+ address. */
+ char *vec[2];
+ vec[0] = (char *)&addr_ipv4;
+ vec[1] = NULL;
+ return address_list_from_ipv4_addresses (vec);
+ }
+ }
+#else /* ENABLE_IPV6 */
+ /* If we're using getaddrinfo, at least check whether the address is
+ already numeric, in which case there is no need to print the
+ "Resolving..." output. (This comes at no additional cost since
+ the is_valid_ipv*_address are already required for
+ url_parse.) */
+ {
+ const char *end = host + strlen (host);
+ if (is_valid_ipv4_address (host, end) || is_valid_ipv6_address (host, end))
+ numeric_address = true;
+ }
+#endif
+
+ /* Cache is normally on, but can be turned off with --no-dns-cache.
+ Don't cache passive lookups under IPv6. */
+ use_cache = opt.dns_cache;
+#ifdef ENABLE_IPV6
+ if ((flags & LH_BIND) || numeric_address)
+ use_cache = false;
+#endif
+
+ /* Try to find the host in the cache so we don't need to talk to the
+ resolver. If LH_REFRESH is requested, remove HOST from the cache
+ instead. */
+ if (use_cache)
+ {
+ if (!(flags & LH_REFRESH))
+ {
+ al = cache_query (host);
+ if (al)
+ return al;
+ }
+ else
+ cache_remove (host);
+ }
+
+ /* No luck with the cache; resolve HOST. */
+
+ if (!silent && !numeric_address)
+ {
+ char *str = NULL, *name;
+
+ if (opt.enable_iri && (name = idn_decode ((char *) host)) != NULL)
+ {
+ str = aprintf ("%s (%s)", name, host);
+ xfree (name);
+ }
+
+ logprintf (LOG_VERBOSE, _("Resolving %s... "),
+ quotearg_style (escape_quoting_style, str ? str : host));
+
+ xfree (str);
+ }
+
+#ifdef ENABLE_IPV6
+#ifdef HAVE_LIBCARES
+ if (ares)
+ {
+ struct address_list *al4 = NULL;
+ struct address_list *al6 = NULL;
+
+ if (opt.ipv4_only || !opt.ipv6_only)
+ ares_gethostbyname (ares, host, AF_INET, callback, &al4);
+ if (opt.ipv6_only || !opt.ipv4_only)
+ ares_gethostbyname (ares, host, AF_INET6, callback, &al6);
+
+ wait_ares (ares);
+
+ if (al4 && al6)
+ al = merge_address_lists (al4, al6);
+ else if (al4)
+ al = al4;
+ else
+ al = al6;
+ }
+ else
+#endif
+ {
+ int err;
+ struct addrinfo hints, *res;
+
+ xzero (hints);
+ hints.ai_socktype = SOCK_STREAM;
+ if (opt.ipv4_only)
+ hints.ai_family = AF_INET;
+ else if (opt.ipv6_only)
+ hints.ai_family = AF_INET6;
+ else
+ /* We tried using AI_ADDRCONFIG, but removed it because: it
+ misinterprets IPv6 loopbacks, it is broken on AIX 5.1, and
+ it's unneeded since we sort the addresses anyway. */
+ hints.ai_family = AF_UNSPEC;
+
+ if (flags & LH_BIND)
+ hints.ai_flags |= AI_PASSIVE;
+
+#ifdef AI_NUMERICHOST
+ if (numeric_address)
+ {
+ /* Where available, the AI_NUMERICHOST hint can prevent costly
+ access to DNS servers. */
+ hints.ai_flags |= AI_NUMERICHOST;
+ timeout = 0; /* no timeout needed when "resolving"
+ numeric hosts -- avoid setting up
+ signal handlers and such. */
+ }
+#endif
+
+ err = getaddrinfo_with_timeout (host, NULL, &hints, &res, timeout);
+
+ if (err != 0 || res == NULL)
+ {
+ if (!silent)
+ logprintf (LOG_VERBOSE, _ ("failed: %s.\n"),
+ err != EAI_SYSTEM ? gai_strerror (err) : strerror (errno));
+ return NULL;
+ }
+ al = address_list_from_addrinfo (res);
+ freeaddrinfo (res);
+ }
+
+ if (!al)
+ {
+ logprintf (LOG_VERBOSE,
+ _ ("failed: No IPv4/IPv6 addresses for host.\n"));
+ return NULL;
+ }
+
+ /* Reorder addresses so that IPv4 ones (or IPv6 ones, as per
+ --prefer-family) come first. Sorting is stable so the order of
+ the addresses with the same family is undisturbed. */
+ if (al->count > 1 && opt.prefer_family != prefer_none)
+ stable_sort (al->addresses, al->count, sizeof (ip_address),
+ opt.prefer_family == prefer_ipv4
+ ? cmp_prefer_ipv4 : cmp_prefer_ipv6);
+#else /* not ENABLE_IPV6 */
+#ifdef HAVE_LIBCARES
+ if (ares)
+ {
+ ares_gethostbyname (ares, host, AF_INET, callback, &al);
+ wait_ares (ares);
+ }
+ else
+#endif
+ {
+ struct hostent *hptr = gethostbyname_with_timeout (host, timeout);
+ if (!hptr)
+ {
+ if (!silent)
+ {
+ if (errno != ETIMEDOUT)
+ logprintf (LOG_VERBOSE, _ ("failed: %s.\n"),
+ host_errstr (h_errno));
+ else
+ logputs (LOG_VERBOSE, _ ("failed: timed out.\n"));
+ }
+ return NULL;
+ }
+ /* Do older systems have h_addr_list? */
+ al = address_list_from_ipv4_addresses (hptr->h_addr_list);
+ }
+#endif /* not ENABLE_IPV6 */
+
+ /* Print the addresses determined by DNS lookup, but no more than
+ three if show_all_dns_entries is not specified. */
+ if (!silent && !numeric_address)
+ {
+ int i;
+ int printmax = al->count;
+
+ if (!opt.show_all_dns_entries && printmax > 3)
+ printmax = 3;
+
+ for (i = 0; i < printmax; i++)
+ {
+ logputs (LOG_VERBOSE, print_address (al->addresses + i));
+ if (i < printmax - 1)
+ logputs (LOG_VERBOSE, ", ");
+ }
+ if (printmax != al->count)
+ logputs (LOG_VERBOSE, ", ...");
+ logputs (LOG_VERBOSE, "\n");
+ }
+
+ /* Cache the lookup information. */
+ if (use_cache)
+ cache_store (host, al);
+
+ return al;
+}
+
+/* Determine whether a URL is acceptable to be followed, according to
+ a list of domains to accept. */
+bool
+accept_domain (struct url *u)
+{
+ assert (u->host != NULL);
+ if (opt.domains)
+ {
+ if (!sufmatch ((const char **)opt.domains, u->host))
+ return false;
+ }
+ if (opt.exclude_domains)
+ {
+ if (sufmatch ((const char **)opt.exclude_domains, u->host))
+ return false;
+ }
+ return true;
+}
+
+/* Check whether WHAT is matched in LIST, each element of LIST being a
+ pattern to match WHAT against, using backward matching (see
+ match_backwards() in utils.c).
+
+ If an element of LIST matched, 1 is returned, 0 otherwise. */
+bool
+sufmatch (const char **list, const char *what)
+{
+ int i, j, k, lw;
+
+ lw = strlen (what);
+
+ for (i = 0; list[i]; i++)
+ {
+ j = strlen (list[i]);
+ if (lw < j)
+ continue; /* what is no (sub)domain of list[i] */
+
+ for (k = lw; j >= 0 && k >= 0; j--, k--)
+ if (c_tolower (list[i][j]) != c_tolower (what[k]))
+ break;
+
+ /* Domain or subdomain match
+ * k == -1: exact match
+ * k >= 0 && what[k] == '.': subdomain match
+ * k >= 0 && list[i][0] == '.': dot-prefixed subdomain match
+ */
+ if (j == -1 && (k == -1 || what[k] == '.' || list[i][0] == '.'))
+ return true;
+ }
+
+ return false;
+}
+
+#if defined DEBUG_MALLOC || defined TESTING
+void
+host_cleanup (void)
+{
+ if (host_name_addresses_map)
+ {
+ hash_table_iterator iter;
+ for (hash_table_iterate (host_name_addresses_map, &iter);
+ hash_table_iter_next (&iter);
+ )
+ {
+ char *host = iter.key;
+ struct address_list *al = iter.value;
+ xfree (host);
+ assert (al->refcount == 1);
+ address_list_delete (al);
+ }
+ hash_table_destroy (host_name_addresses_map);
+ host_name_addresses_map = NULL;
+ }
+}
+#endif
+
+bool
+is_valid_ip_address (const char *name)
+{
+ const char *endp;
+
+ endp = name + strlen(name);
+ if (is_valid_ipv4_address (name, endp))
+ return true;
+#ifdef ENABLE_IPV6
+ if (is_valid_ipv6_address (name, endp))
+ return true;
+#endif
+ return false;
+}
diff --git a/src/host.h b/src/host.h
new file mode 100644
index 0000000..a199d26
--- /dev/null
+++ b/src/host.h
@@ -0,0 +1,107 @@
+/* Declarations for host.c
+ Copyright (C) 1996-2012, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef HOST_H
+#define HOST_H
+
+#ifdef WINDOWS
+# include <winsock2.h>
+#else
+# ifdef __VMS
+# include "vms_ip.h"
+# else /* def __VMS */
+# include <netdb.h>
+# endif /* def __VMS [else] */
+# include <sys/socket.h>
+# include <netinet/in.h>
+#ifndef __BEOS__
+# include <arpa/inet.h>
+#endif
+#endif
+
+struct url;
+struct address_list;
+
+/* This struct defines an IP address, tagged with family type. */
+
+typedef struct {
+ /* Address family, one of AF_INET or AF_INET6. */
+ int family;
+
+ /* The actual data, in the form of struct in_addr or in6_addr: */
+ union {
+ struct in_addr d4; /* IPv4 address */
+#ifdef ENABLE_IPV6
+ struct in6_addr d6; /* IPv6 address */
+#endif
+ } data;
+
+ /* Under IPv6 getaddrinfo also returns scope_id. Since it's
+ IPv6-specific it strictly belongs in the above union, but we put
+ it here for simplicity. */
+#if defined ENABLE_IPV6 && defined HAVE_SOCKADDR_IN6_SCOPE_ID
+ int ipv6_scope;
+#endif
+} ip_address;
+
+/* IP_INADDR_DATA macro returns a void pointer that can be interpreted
+ as a pointer to struct in_addr in IPv4 context or a pointer to
+ struct in6_addr in IPv4 context. This pointer can be passed to
+ functions that work on either, such as inet_ntop. */
+#define IP_INADDR_DATA(x) ((void *) &(x)->data)
+
+enum {
+ LH_SILENT = 1,
+ LH_BIND = 2,
+ LH_REFRESH = 4
+};
+struct address_list *lookup_host (const char *, int);
+
+void address_list_get_bounds (const struct address_list *, int *, int *);
+const ip_address *address_list_address_at (const struct address_list *, int);
+bool address_list_contains (const struct address_list *, const ip_address *);
+void address_list_set_faulty (struct address_list *, int);
+void address_list_set_connected (struct address_list *);
+bool address_list_connected_p (const struct address_list *);
+void address_list_release (struct address_list *);
+
+const char *print_address (const ip_address *);
+#ifdef ENABLE_IPV6
+bool is_valid_ipv6_address (const char *, const char *);
+#endif
+
+bool is_valid_ip_address (const char *name);
+
+bool accept_domain (struct url *);
+bool sufmatch (const char **, const char *);
+
+void host_cleanup (void);
+
+#endif /* HOST_H */
diff --git a/src/hsts.c b/src/hsts.c
new file mode 100644
index 0000000..914d270
--- /dev/null
+++ b/src/hsts.c
@@ -0,0 +1,829 @@
+/* HTTP Strict Transport Security (HSTS) support.
+ Copyright (C) 1996-2012, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+#include "wget.h"
+
+#ifdef HAVE_HSTS
+#include "hsts.h"
+#include "utils.h"
+#include "host.h" /* for is_valid_ip_address() */
+#include "hash.h"
+#include "c-ctype.h"
+#ifdef TESTING
+#include "init.h" /* for ajoin_dir_file() */
+#include "../tests/unit-tests.h"
+#endif
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <stdlib.h>
+#include <time.h>
+#include <sys/stat.h>
+#include <string.h>
+#include <stdio.h>
+#include <sys/file.h>
+
+struct hsts_store {
+ struct hash_table *table;
+ time_t last_mtime;
+ bool changed;
+};
+
+struct hsts_kh {
+ char *host;
+ int explicit_port;
+};
+
+struct hsts_kh_info {
+ time_t created;
+ time_t max_age;
+ bool include_subdomains;
+};
+
+enum hsts_kh_match {
+ NO_MATCH,
+ SUPERDOMAIN_MATCH,
+ CONGRUENT_MATCH
+};
+
+#define hsts_is_host_name_valid(host) (!is_valid_ip_address (host))
+#define hsts_is_scheme_valid(scheme) (scheme == SCHEME_HTTPS)
+#define hsts_is_host_eligible(scheme, host) \
+ (hsts_is_scheme_valid (scheme) && hsts_is_host_name_valid (host))
+
+#define DEFAULT_HTTP_PORT 80
+#define DEFAULT_SSL_PORT 443
+#define MAKE_EXPLICIT_PORT(s, p) (s == SCHEME_HTTPS ? (p == DEFAULT_SSL_PORT ? 0 : p) \
+ : (p == DEFAULT_HTTP_PORT ? 0 : p))
+
+/* Hashing and comparison functions for the hash table */
+
+#ifdef __clang__
+__attribute__((no_sanitize("integer")))
+#endif
+static unsigned long
+hsts_hash_func (const void *key)
+{
+ struct hsts_kh *k = (struct hsts_kh *) key;
+ const char *h = NULL;
+ unsigned int hash = k->explicit_port;
+
+ for (h = k->host; *h; h++)
+ hash = hash * 31 + *h;
+
+ return hash;
+}
+
+static int
+hsts_cmp_func (const void *h1, const void *h2)
+{
+ struct hsts_kh *kh1 = (struct hsts_kh *) h1,
+ *kh2 = (struct hsts_kh *) h2;
+
+ return (!strcmp (kh1->host, kh2->host)) && (kh1->explicit_port == kh2->explicit_port);
+}
+
+/* Private functions. Feel free to make some of these public when needed. */
+
+static struct hsts_kh_info *
+hsts_find_entry (hsts_store_t store,
+ const char *host, int explicit_port,
+ enum hsts_kh_match *match_type,
+ struct hsts_kh *kh)
+{
+ struct hsts_kh *k = NULL;
+ struct hsts_kh_info *khi = NULL;
+ enum hsts_kh_match match = NO_MATCH;
+ char *pos = NULL;
+ char *org_ptr = NULL;
+
+ k = (struct hsts_kh *) xnew (struct hsts_kh);
+ k->host = xstrdup_lower (host);
+ k->explicit_port = explicit_port;
+
+ /* save pointer so that we don't get into trouble later when freeing */
+ org_ptr = k->host;
+
+ khi = (struct hsts_kh_info *) hash_table_get (store->table, k);
+ if (khi)
+ {
+ match = CONGRUENT_MATCH;
+ goto end;
+ }
+
+ while (match == NO_MATCH &&
+ (pos = strchr (k->host, '.')) && pos - k->host > 0 &&
+ strchr (pos + 1, '.'))
+ {
+ k->host += (pos - k->host + 1);
+ khi = (struct hsts_kh_info *) hash_table_get (store->table, k);
+ if (khi)
+ match = SUPERDOMAIN_MATCH;
+ }
+
+end:
+ /* restore pointer or we'll get a SEGV */
+ k->host = org_ptr;
+
+ /* copy parameters to previous frame */
+ if (match_type)
+ *match_type = match;
+ if (kh)
+ memcpy (kh, k, sizeof (struct hsts_kh));
+ else
+ xfree (k->host);
+
+ xfree (k);
+ return khi;
+}
+
+static bool
+hsts_new_entry_internal (hsts_store_t store,
+ const char *host, int port,
+ time_t created, time_t max_age,
+ bool include_subdomains,
+ bool check_validity,
+ bool check_expired,
+ bool check_duplicates)
+{
+ struct hsts_kh *kh = xnew (struct hsts_kh);
+ struct hsts_kh_info *khi = xnew0 (struct hsts_kh_info);
+ bool success = false;
+
+ kh->host = xstrdup_lower (host);
+ kh->explicit_port = MAKE_EXPLICIT_PORT (SCHEME_HTTPS, port);
+
+ khi->created = created;
+ khi->max_age = max_age;
+ khi->include_subdomains = include_subdomains;
+
+ /* Check validity */
+ if (check_validity && !hsts_is_host_name_valid (host))
+ goto bail;
+
+ if (check_expired && ((khi->created + khi->max_age) < khi->created))
+ goto bail;
+
+ if (check_duplicates && hash_table_contains (store->table, kh))
+ goto bail;
+
+ /* Now store the new entry */
+ hash_table_put (store->table, kh, khi);
+ success = true;
+
+bail:
+ if (!success)
+ {
+ /* abort! */
+ xfree (kh->host);
+ xfree (kh);
+ xfree (khi);
+ }
+
+ return success;
+}
+
+/*
+ Creates a new entry, but does not check whether that entry already exists.
+ This function assumes that check has already been done by the caller.
+ */
+static bool
+hsts_add_entry (hsts_store_t store,
+ const char *host, int port,
+ time_t max_age, bool include_subdomains)
+{
+ time_t t = time (NULL);
+
+ /* It might happen time() returned -1 */
+ return (t == (time_t)(-1) ?
+ false :
+ hsts_new_entry_internal (store, host, port, t, max_age, include_subdomains, false, true, false));
+}
+
+/* Creates a new entry, unless an identical one already exists. */
+static bool
+hsts_new_entry (hsts_store_t store,
+ const char *host, int port,
+ time_t created, time_t max_age,
+ bool include_subdomains)
+{
+ return hsts_new_entry_internal (store, host, port, created, max_age, include_subdomains, true, true, true);
+}
+
+static void
+hsts_remove_entry (hsts_store_t store, struct hsts_kh *kh)
+{
+ hash_table_remove (store->table, kh);
+}
+
+static bool
+hsts_store_merge (hsts_store_t store,
+ const char *host, int port,
+ time_t created, time_t max_age,
+ bool include_subdomains)
+{
+ enum hsts_kh_match match_type = NO_MATCH;
+ struct hsts_kh_info *khi = NULL;
+ bool success = false;
+
+ port = MAKE_EXPLICIT_PORT (SCHEME_HTTPS, port);
+ khi = hsts_find_entry (store, host, port, &match_type, NULL);
+ if (khi && match_type == CONGRUENT_MATCH && created > khi->created)
+ {
+ /* update the entry with the new info */
+ khi->created = created;
+ khi->max_age = max_age;
+ khi->include_subdomains = include_subdomains;
+
+ success = true;
+ }
+ else if (!khi)
+ success = hsts_new_entry (store, host, port, created, max_age, include_subdomains);
+
+ return success;
+}
+
+static bool
+hsts_read_database (hsts_store_t store, FILE *fp, bool merge_with_existing_entries)
+{
+ char *line = NULL, *p;
+ size_t len = 0;
+ int items_read;
+ bool result = false;
+ bool (*func)(hsts_store_t, const char *, int, time_t, time_t, bool);
+
+ char host[256];
+ int port;
+ time_t created, max_age;
+ int include_subdomains;
+
+ func = (merge_with_existing_entries ? hsts_store_merge : hsts_new_entry);
+
+ while (getline (&line, &len, fp) > 0)
+ {
+ for (p = line; c_isspace (*p); p++)
+ ;
+
+ if (*p == '#')
+ continue;
+
+ items_read = sscanf (p, "%255s %d %d %lu %lu",
+ host,
+ &port,
+ &include_subdomains,
+ (unsigned long *) &created,
+ (unsigned long *) &max_age);
+
+ if (items_read == 5)
+ func (store, host, port, created, max_age, !!include_subdomains);
+ }
+
+ xfree (line);
+ result = true;
+
+ return result;
+}
+
+static void
+hsts_store_dump (hsts_store_t store, FILE *fp)
+{
+ hash_table_iterator it;
+
+ /* Print preliminary comments. We don't care if any of these fail. */
+ fputs ("# HSTS 1.0 Known Hosts database for GNU Wget.\n", fp);
+ fputs ("# Edit at your own risk.\n", fp);
+ fputs ("# <hostname>\t<port>\t<incl. subdomains>\t<created>\t<max-age>\n", fp);
+
+ /* Now cycle through the HSTS store in memory and dump the entries */
+ for (hash_table_iterate (store->table, &it); hash_table_iter_next (&it);)
+ {
+ struct hsts_kh *kh = (struct hsts_kh *) it.key;
+ struct hsts_kh_info *khi = (struct hsts_kh_info *) it.value;
+
+ if (fprintf (fp, "%s\t%d\t%d\t%lu\t%lu\n",
+ kh->host, kh->explicit_port, khi->include_subdomains,
+ (unsigned long) khi->created,
+ (unsigned long) khi->max_age) < 0)
+ {
+ logprintf (LOG_ALWAYS, "Could not write the HSTS database correctly.\n");
+ break;
+ }
+ }
+}
+
+/*
+ * Test:
+ * - The file is a regular file (ie. not a symlink), and
+ * - The file is not world-writable.
+ */
+static bool
+hsts_file_access_valid (const char *filename)
+{
+ struct stat st;
+
+ if (stat (filename, &st) == -1)
+ return false;
+
+ return
+#ifndef WINDOWS
+ /*
+ * The world-writable concept is a Unix-centric notion.
+ * We bypass this test on Windows.
+ */
+ !(st.st_mode & S_IWOTH) &&
+#endif
+ S_ISREG (st.st_mode);
+}
+
+/* HSTS API */
+
+/*
+ Changes the given URLs according to the HSTS policy.
+
+ If there's no host in the store that either congruently
+ or not, matches the given URL, no changes are made.
+ Returns true if the URL was changed, or false
+ if it was left intact.
+ */
+bool
+hsts_match (hsts_store_t store, struct url *u)
+{
+ bool url_changed = false;
+ struct hsts_kh_info *entry = NULL;
+ struct hsts_kh *kh = xnew(struct hsts_kh);
+ enum hsts_kh_match match = NO_MATCH;
+ int port = MAKE_EXPLICIT_PORT (u->scheme, u->port);
+
+ /* avoid doing any computation if we're already in HTTPS */
+ if (!hsts_is_scheme_valid (u->scheme))
+ {
+ entry = hsts_find_entry (store, u->host, port, &match, kh);
+ if (entry)
+ {
+ if ((entry->created + entry->max_age) >= time(NULL))
+ {
+ if ((match == CONGRUENT_MATCH) ||
+ (match == SUPERDOMAIN_MATCH && entry->include_subdomains))
+ {
+ /* we found a matching Known HSTS Host
+ rewrite the URL */
+ u->scheme = SCHEME_HTTPS;
+ if (u->port == 80)
+ u->port = 443;
+ url_changed = true;
+ store->changed = true;
+ }
+ }
+ else
+ {
+ hsts_remove_entry (store, kh);
+ store->changed = true;
+ }
+ }
+ xfree (kh->host);
+ }
+
+ xfree (kh);
+
+ return url_changed;
+}
+
+/*
+ Add a new HSTS Known Host to the HSTS store.
+
+ If the host already exists, its information is updated,
+ or it'll be removed from the store if max_age is zero.
+
+ Bear in mind that the store is kept in memory, and will not
+ be written to disk until hsts_store_save is called.
+ This function regrows the in-memory HSTS store if necessary.
+
+ Currently, for a host to be taken into consideration,
+ two conditions have to be met:
+ - Connection must be through a secure channel (HTTPS).
+ - The host must not be an IPv4 or IPv6 address.
+
+ The RFC 6797 states that hosts that match IPv4 or IPv6 format
+ should be discarded at URI rewrite time. But we short-circuit
+ that check here, since there's no point in storing a host that
+ will never be matched.
+
+ Returns true if a new entry was actually created, or false
+ if an existing entry was updated/deleted. */
+bool
+hsts_store_entry (hsts_store_t store,
+ enum url_scheme scheme, const char *host, int port,
+ time_t max_age, bool include_subdomains)
+{
+ bool result = false;
+ enum hsts_kh_match match = NO_MATCH;
+ struct hsts_kh *kh = xnew(struct hsts_kh);
+ struct hsts_kh_info *entry = NULL;
+
+ if (hsts_is_host_eligible (scheme, host))
+ {
+ port = MAKE_EXPLICIT_PORT (scheme, port);
+ entry = hsts_find_entry (store, host, port, &match, kh);
+ if (entry && match == CONGRUENT_MATCH)
+ {
+ if (max_age == 0)
+ {
+ hsts_remove_entry (store, kh);
+ store->changed = true;
+ }
+ else if (max_age > 0)
+ {
+ /* RFC 6797 states that 'max_age' is a TTL relative to the
+ * reception of the STS header so we have to update the
+ * 'created' field too. The RFC also states that we have to
+ * update the entry each time we see HSTS header.
+ * See also Section 11.2. */
+ time_t t = time (NULL);
+
+ if (t != (time_t)(-1) && t != entry->created)
+ {
+ entry->created = t;
+ entry->max_age = max_age;
+ entry->include_subdomains = include_subdomains;
+ store->changed = true;
+ }
+ }
+ /* we ignore negative max_ages */
+ }
+ else if (entry == NULL || match == SUPERDOMAIN_MATCH)
+ {
+ /* Either we didn't find a matching host,
+ or we got a superdomain match.
+ In either case, we create a new entry.
+
+ We have to perform an explicit check because it might
+ happen we got a non-existent entry with max_age == 0.
+ */
+ result = hsts_add_entry (store, host, port, max_age, include_subdomains);
+ if (result)
+ store->changed = true;
+ }
+ /* we ignore new entries with max_age == 0 */
+ xfree (kh->host);
+ }
+
+ xfree (kh);
+
+ return result;
+}
+
+hsts_store_t
+hsts_store_open (const char *filename)
+{
+ hsts_store_t store = NULL;
+ file_stats_t fstats;
+
+ store = xnew0 (struct hsts_store);
+ store->table = hash_table_new (0, hsts_hash_func, hsts_cmp_func);
+ store->last_mtime = 0;
+ store->changed = false;
+
+ if (file_exists_p (filename, &fstats))
+ {
+ if (hsts_file_access_valid (filename))
+ {
+ struct stat st;
+ FILE *fp = fopen_stat (filename, "r", &fstats);
+
+ if (!fp || !hsts_read_database (store, fp, false))
+ {
+ /* abort! */
+ hsts_store_close (store);
+ xfree (store);
+ if (fp)
+ fclose (fp);
+ goto out;
+ }
+
+ if (fstat (fileno (fp), &st) == 0)
+ store->last_mtime = st.st_mtime;
+
+ fclose (fp);
+ }
+ else
+ {
+ /*
+ * If we're not reading the HSTS database,
+ * then by all means act as if HSTS was disabled.
+ */
+ hsts_store_close (store);
+ xfree (store);
+
+ logprintf (LOG_NOTQUIET, "Will not apply HSTS. "
+ "The HSTS database must be a regular and non-world-writable file.\n");
+ }
+ }
+
+out:
+ return store;
+}
+
+void
+hsts_store_save (hsts_store_t store, const char *filename)
+{
+ struct stat st;
+ FILE *fp = NULL;
+ int fd = 0;
+
+ if (filename && hash_table_count (store->table) > 0)
+ {
+ fp = fopen (filename, "a+");
+ if (fp)
+ {
+ /* Lock the file to avoid potential race conditions */
+ fd = fileno (fp);
+ flock (fd, LOCK_EX);
+
+ /* If the file has changed, merge the changes with our in-memory data
+ before dumping them to the file.
+ Otherwise we could potentially overwrite the data stored by other Wget processes.
+ */
+ if (store->last_mtime && stat (filename, &st) == 0 && st.st_mtime > store->last_mtime)
+ hsts_read_database (store, fp, true);
+
+ /* We've merged the latest changes so we can now truncate the file
+ and dump everything. */
+ fseek (fp, 0, SEEK_SET);
+ ftruncate (fd, 0);
+
+ /* now dump to the file */
+ hsts_store_dump (store, fp);
+
+ /* fclose is expected to unlock the file for us */
+ fclose (fp);
+ }
+ }
+}
+
+bool
+hsts_store_has_changed (hsts_store_t store)
+{
+ return (store ? store->changed : false);
+}
+
+void
+hsts_store_close (hsts_store_t store)
+{
+ hash_table_iterator it;
+
+ /* free all the host fields */
+ for (hash_table_iterate (store->table, &it); hash_table_iter_next (&it);)
+ {
+ xfree (((struct hsts_kh *) it.key)->host);
+ xfree (it.key);
+ xfree (it.value);
+ }
+
+ hash_table_destroy (store->table);
+}
+
+#ifdef TESTING
+/* I know I'm really evil because I'm writing macros
+ that change control flow. But we're testing, who will tell? :D
+ */
+#define TEST_URL_RW(s, u, p) do { \
+ if (test_url_rewrite (s, u, p, true)) \
+ return test_url_rewrite (s, u, p, true); \
+ } while (0)
+
+#define TEST_URL_NORW(s, u, p) do { \
+ if (test_url_rewrite (s, u, p, false)) \
+ return test_url_rewrite (s, u, p, false); \
+ } while (0)
+
+static char *
+get_hsts_store_filename (void)
+{
+ char *filename = NULL;
+ FILE *fp = NULL;
+
+ if (opt.homedir)
+ {
+ filename = ajoin_dir_file (opt.homedir, ".wget-hsts-test");
+ fp = fopen (filename, "w");
+ if (fp)
+ fclose (fp);
+ }
+
+ return filename;
+}
+
+static hsts_store_t
+open_hsts_test_store (void)
+{
+ char *filename = NULL;
+ hsts_store_t table = NULL;
+
+ filename = get_hsts_store_filename ();
+ table = hsts_store_open (filename);
+ xfree (filename);
+
+ return table;
+}
+
+static void
+close_hsts_test_store (hsts_store_t store)
+{
+ char *filename;
+
+ if ((filename = get_hsts_store_filename ()))
+ {
+ unlink (filename);
+ xfree (filename);
+ }
+ xfree (store);
+}
+
+static const char*
+test_url_rewrite (hsts_store_t s, const char *url, int port, bool rewrite)
+{
+ bool result;
+ struct url u;
+
+ u.host = xstrdup (url);
+ u.port = port;
+ u.scheme = SCHEME_HTTP;
+
+ result = hsts_match (s, &u);
+
+ if (rewrite)
+ {
+ if (port == 80)
+ mu_assert("URL: port should've been rewritten to 443", u.port == 443);
+ else
+ mu_assert("URL: port should've been left intact", u.port == port);
+ mu_assert("URL: scheme should've been rewritten to HTTPS", u.scheme == SCHEME_HTTPS);
+ mu_assert("result should've been true", result == true);
+ }
+ else
+ {
+ mu_assert("URL: port should've been left intact", u.port == port);
+ mu_assert("URL: scheme should've been left intact", u.scheme == SCHEME_HTTP);
+ mu_assert("result should've been false", result == false);
+ }
+
+ xfree (u.host);
+ return NULL;
+}
+
+const char *
+test_hsts_new_entry (void)
+{
+ enum hsts_kh_match match = NO_MATCH;
+ struct hsts_kh_info *khi;
+ hsts_store_t s;
+ bool created;
+
+ s = open_hsts_test_store ();
+ mu_assert("Could not open the HSTS store. This could be due to lack of memory.", s != NULL);
+
+ created = hsts_store_entry (s, SCHEME_HTTP, "www.foo.com", 80, 1234, true);
+ mu_assert("No entry should have been created.", created == false);
+
+ created = hsts_store_entry (s, SCHEME_HTTPS, "www.foo.com", 443, 1234, true);
+ mu_assert("A new entry should have been created", created == true);
+
+ khi = hsts_find_entry (s, "www.foo.com", MAKE_EXPLICIT_PORT (SCHEME_HTTPS, 443), &match, NULL);
+ mu_assert("Should've been a congruent match", match == CONGRUENT_MATCH);
+ mu_assert("No valid HSTS info was returned", khi != NULL);
+ mu_assert("Variable 'max_age' should be 1234", khi->max_age == 1234);
+ mu_assert("Variable 'include_subdomains' should be asserted", khi->include_subdomains == true);
+
+ khi = hsts_find_entry (s, "b.www.foo.com", MAKE_EXPLICIT_PORT (SCHEME_HTTPS, 443), &match, NULL);
+ mu_assert("Should've been a superdomain match", match == SUPERDOMAIN_MATCH);
+ mu_assert("No valid HSTS info was returned", khi != NULL);
+ mu_assert("Variable 'max_age' should be 1234", khi->max_age == 1234);
+ mu_assert("Variable 'include_subdomains' should be asserted", khi->include_subdomains == true);
+
+ khi = hsts_find_entry (s, "ww.foo.com", MAKE_EXPLICIT_PORT (SCHEME_HTTPS, 443), &match, NULL);
+ mu_assert("Should've been no match", match == NO_MATCH);
+
+ khi = hsts_find_entry (s, "foo.com", MAKE_EXPLICIT_PORT (SCHEME_HTTPS, 443), &match, NULL);
+ mu_assert("Should've been no match", match == NO_MATCH);
+
+ khi = hsts_find_entry (s, ".foo.com", MAKE_EXPLICIT_PORT (SCHEME_HTTPS, 443), &match, NULL);
+ mu_assert("Should've been no match", match == NO_MATCH);
+
+ khi = hsts_find_entry (s, ".www.foo.com", MAKE_EXPLICIT_PORT (SCHEME_HTTPS, 443), &match, NULL);
+ mu_assert("Should've been no match", match == NO_MATCH);
+
+ hsts_store_close (s);
+ close_hsts_test_store (s);
+
+ return NULL;
+}
+
+const char*
+test_hsts_url_rewrite_superdomain (void)
+{
+ hsts_store_t s;
+ bool created;
+
+ s = open_hsts_test_store ();
+ mu_assert("Could not open the HSTS store", s != NULL);
+
+ created = hsts_store_entry (s, SCHEME_HTTPS, "www.foo.com", 443, 1234, true);
+ mu_assert("A new entry should've been created", created == true);
+
+ TEST_URL_RW (s, "www.foo.com", 80);
+ TEST_URL_RW (s, "bar.www.foo.com", 80);
+
+ hsts_store_close (s);
+ close_hsts_test_store (s);
+
+ return NULL;
+}
+
+const char*
+test_hsts_url_rewrite_congruent (void)
+{
+ hsts_store_t s;
+ bool created;
+
+ s = open_hsts_test_store ();
+ mu_assert("Could not open the HSTS store", s != NULL);
+
+ created = hsts_store_entry (s, SCHEME_HTTPS, "foo.com", 443, 1234, false);
+ mu_assert("A new entry should've been created", created == true);
+
+ TEST_URL_RW (s, "foo.com", 80);
+ TEST_URL_NORW (s, "www.foo.com", 80);
+
+ hsts_store_close (s);
+ close_hsts_test_store (s);
+
+ return NULL;
+}
+
+const char*
+test_hsts_read_database (void)
+{
+ hsts_store_t table;
+ char *file = NULL;
+ FILE *fp = NULL;
+ time_t created = time(NULL) - 10;
+
+ if (opt.homedir)
+ {
+ file = ajoin_dir_file (opt.homedir, ".wget-hsts-testing");
+ fp = fopen (file, "w");
+ if (fp)
+ {
+ fputs ("# dummy comment\n", fp);
+ fprintf (fp, "foo.example.com\t0\t1\t%lu\t123\n",(unsigned long) created);
+ fprintf (fp, "bar.example.com\t0\t0\t%lu\t456\n", (unsigned long) created);
+ fprintf (fp, "test.example.com\t8080\t0\t%lu\t789\n", (unsigned long) created);
+ fclose (fp);
+
+ table = hsts_store_open (file);
+
+ TEST_URL_RW (table, "foo.example.com", 80);
+ TEST_URL_RW (table, "www.foo.example.com", 80);
+ TEST_URL_RW (table, "bar.example.com", 80);
+
+ TEST_URL_NORW(table, "www.bar.example.com", 80);
+
+ TEST_URL_RW (table, "test.example.com", 8080);
+
+ hsts_store_close (table);
+ close_hsts_test_store (table);
+ unlink (file);
+ }
+ xfree (file);
+ }
+
+ return NULL;
+}
+#endif /* TESTING */
+#endif /* HAVE_HSTS */
diff --git a/src/hsts.h b/src/hsts.h
new file mode 100644
index 0000000..7cc41e3
--- /dev/null
+++ b/src/hsts.h
@@ -0,0 +1,53 @@
+/* Declarations for hsts.c
+ Copyright (C) 1996-2012, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef WGET_HSTS_H
+#define WGET_HSTS_H
+
+#ifdef HAVE_HSTS
+
+#include "wget.h"
+#include "url.h"
+
+typedef struct hsts_store *hsts_store_t;
+
+hsts_store_t hsts_store_open (const char *);
+
+void hsts_store_save (hsts_store_t, const char *);
+void hsts_store_close (hsts_store_t);
+bool hsts_store_has_changed (hsts_store_t);
+
+bool hsts_store_entry (hsts_store_t,
+ enum url_scheme, const char *, int,
+ time_t, bool);
+bool hsts_match (hsts_store_t, struct url *);
+
+#endif /* HAVE_HSTS */
+#endif /* WGET_HSTS_H */
diff --git a/src/html-parse.c b/src/html-parse.c
new file mode 100644
index 0000000..6367732
--- /dev/null
+++ b/src/html-parse.c
@@ -0,0 +1,1221 @@
+/* HTML parser for Wget.
+ Copyright (C) 1998-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at
+your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+/* The only entry point to this module is map_html_tags(), which see. */
+
+/* TODO:
+
+ - Allow hooks for callers to process contents outside tags. This
+ is needed to implement handling <style> and <script>. The
+ taginfo structure already carries the information about where the
+ tags are, but this is not enough, because one would also want to
+ skip the comments. (The funny thing is that for <style> and
+ <script> you *don't* want to skip comments!)
+
+ - Create a test suite for regression testing. */
+
+/* HISTORY:
+
+ This is the third HTML parser written for Wget. The first one was
+ written some time during the Geturl 1.0 beta cycle, and was very
+ inefficient and buggy. It also contained some very complex code to
+ remember a list of parser states, because it was supposed to be
+ reentrant.
+
+ The second HTML parser was written for Wget 1.4 (the first version
+ by the name `Wget'), and was a complete rewrite. Although the new
+ parser behaved much better and made no claims of reentrancy, it
+ still shared many of the fundamental flaws of the old version -- it
+ only regarded HTML in terms tag-attribute pairs, where the
+ attribute's value was a URL to be returned. Any other property of
+ HTML, such as <base href=...>, or strange way to specify a URL,
+ such as <meta http-equiv=Refresh content="0; URL=..."> had to be
+ crudely hacked in -- and the caller had to be aware of these hacks.
+ Like its predecessor, this parser did not support HTML comments.
+
+ After Wget 1.5.1 was released, I set out to write a third HTML
+ parser. The objectives of the new parser were to: (1) provide a
+ clean way to analyze HTML lexically, (2) separate interpretation of
+ the markup from the parsing process, (3) be as correct as possible,
+ e.g. correctly skipping comments and other SGML declarations, (4)
+ understand the most common errors in markup and skip them or be
+ relaxed towrds them, and (5) be reasonably efficient (no regexps,
+ minimum copying and minimum or no heap allocation).
+
+ I believe this parser meets all of the above goals. It is
+ reasonably well structured, and could be relatively easily
+ separated from Wget and used elsewhere. While some of its
+ intrinsic properties limit its value as a general-purpose HTML
+ parser, I believe that, with minimum modifications, it could serve
+ as a backend for one.
+
+ Due to time and other constraints, this parser was not integrated
+ into Wget until the version 1.7. */
+
+/* DESCRIPTION:
+
+ The single entry point of this parser is map_html_tags(), which
+ works by calling a function you specify for each tag. The function
+ gets called with the pointer to a structure describing the tag and
+ its attributes. */
+
+/* To test as standalone, compile with `-DSTANDALONE -I.'. You'll
+ still need Wget headers to compile. */
+
+#include "wget.h"
+
+#ifdef STANDALONE
+# define I_REALLY_WANT_CTYPE_MACROS
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include "utils.h"
+#include "html-parse.h"
+
+#ifdef STANDALONE
+# undef xmalloc
+# undef xrealloc
+# undef xfree
+# define xmalloc malloc
+# define xrealloc realloc
+# define xfree free
+
+# undef c_isspace
+# undef c_isdigit
+# undef c_isxdigit
+# undef c_isalpha
+# undef c_isalnum
+# undef c_tolower
+# undef c_toupper
+
+# define c_isspace(x) isspace (x)
+# define c_isdigit(x) isdigit (x)
+# define c_isxdigit(x) isxdigit (x)
+# define c_isalpha(x) isalpha (x)
+# define c_isalnum(x) isalnum (x)
+# define c_tolower(x) tolower (x)
+# define c_toupper(x) toupper (x)
+
+struct hash_table {
+ int dummy;
+};
+static void *
+hash_table_get (const struct hash_table *ht, void *ptr)
+{
+ return ptr;
+}
+#else /* not STANDALONE */
+# include "hash.h"
+#endif
+
+/* Pool support. A pool is a resizable chunk of memory. It is first
+ allocated on the stack, and moved to the heap if it needs to be
+ larger than originally expected. map_html_tags() uses it to store
+ the zero-terminated names and values of tags and attributes.
+
+ Thus taginfo->name, and attr->name and attr->value for each
+ attribute, do not point into separately allocated areas, but into
+ different parts of the pool, separated only by terminating zeros.
+ This ensures minimum amount of allocation and, for most tags, no
+ allocation because the entire pool is kept on the stack. */
+
+struct pool {
+ char *contents; /* pointer to the contents. */
+ int size; /* size of the pool. */
+ int tail; /* next available position index. */
+ bool resized; /* whether the pool has been resized
+ using malloc. */
+
+ char *orig_contents; /* original pool contents, usually
+ stack-allocated. used by POOL_FREE
+ to restore the pool to the initial
+ state. */
+ int orig_size;
+};
+
+/* Initialize the pool to hold INITIAL_SIZE bytes of storage. */
+
+#define POOL_INIT(p, initial_storage, initial_size) do { \
+ struct pool *P = (p); \
+ P->contents = (initial_storage); \
+ P->size = (initial_size); \
+ P->tail = 0; \
+ P->resized = false; \
+ P->orig_contents = P->contents; \
+ P->orig_size = P->size; \
+} while (0)
+
+/* Grow the pool to accommodate at least SIZE new bytes. If the pool
+ already has room to accommodate SIZE bytes of data, this is a no-op. */
+
+#define POOL_GROW(p, increase) \
+ GROW_ARRAY ((p)->contents, (p)->size, (p)->tail + (increase), \
+ (p)->resized, char)
+
+/* Append text in the range [beg, end) to POOL. No zero-termination
+ is done. */
+
+#define POOL_APPEND(p, beg, end) do { \
+ const char *PA_beg = (beg); \
+ int PA_size = (end) - PA_beg; \
+ POOL_GROW (p, PA_size); \
+ memcpy ((p)->contents + (p)->tail, PA_beg, PA_size); \
+ (p)->tail += PA_size; \
+} while (0)
+
+/* Append one character to the pool. Can be used to zero-terminate
+ pool strings. */
+
+#define POOL_APPEND_CHR(p, ch) do { \
+ char PAC_char = (ch); \
+ POOL_GROW (p, 1); \
+ (p)->contents[(p)->tail++] = PAC_char; \
+} while (0)
+
+/* Forget old pool contents. The allocated memory is not freed. */
+#define POOL_REWIND(p) (p)->tail = 0
+
+/* Free heap-allocated memory for contents of POOL. This calls
+ xfree() if the memory was allocated through malloc. It also
+ restores `contents' and `size' to their original, pre-malloc
+ values. That way after POOL_FREE, the pool is fully usable, just
+ as if it were freshly initialized with POOL_INIT. */
+
+#define POOL_FREE(p) do { \
+ struct pool *P = p; \
+ if (P->resized) \
+ xfree (P->contents); \
+ P->contents = P->orig_contents; \
+ P->size = P->orig_size; \
+ P->tail = 0; \
+ P->resized = false; \
+} while (0)
+
+/* Used for small stack-allocated memory chunks that might grow. Like
+ DO_REALLOC, this macro grows BASEVAR as necessary to take
+ NEEDED_SIZE items of TYPE.
+
+ The difference is that on the first resize, it will use
+ malloc+memcpy rather than realloc. That way you can stack-allocate
+ the initial chunk, and only resort to heap allocation if you
+ stumble upon large data.
+
+ After the first resize, subsequent ones are performed with realloc,
+ just like DO_REALLOC. */
+
+#define GROW_ARRAY(basevar, sizevar, needed_size, resized, type) do { \
+ long ga_needed_size = (needed_size); \
+ long ga_newsize = (sizevar); \
+ while (ga_newsize < ga_needed_size) \
+ ga_newsize <<= 1; \
+ if (ga_newsize != (sizevar)) \
+ { \
+ if (resized) \
+ basevar = xrealloc (basevar, ga_newsize * sizeof (type)); \
+ else \
+ { \
+ void *ga_new = xmalloc (ga_newsize * sizeof (type)); \
+ memcpy (ga_new, basevar, (sizevar) * sizeof (type)); \
+ (basevar) = ga_new; \
+ resized = true; \
+ } \
+ (sizevar) = ga_newsize; \
+ } \
+} while (0)
+
+/* Test whether n+1-sized entity name fits in P. We don't support
+ IE-style non-terminated entities, e.g. "&ltfoo" -> "<foo".
+ However, "&lt;foo" will work, as will "&lt!foo", "&lt", etc. In
+ other words an entity needs to be terminated by either a
+ non-alphanumeric or the end of string. */
+#define FITS(p, n) (p + n == end || (p + n < end && !c_isalnum (p[n])))
+
+/* Macros that test entity names by returning true if P is followed by
+ the specified characters. */
+#define ENT1(p, c0) (FITS (p, 1) && p[0] == c0)
+#define ENT2(p, c0, c1) (FITS (p, 2) && p[0] == c0 && p[1] == c1)
+#define ENT3(p, c0, c1, c2) (FITS (p, 3) && p[0]==c0 && p[1]==c1 && p[2]==c2)
+
+/* Increment P by INC chars. If P lands at a semicolon, increment it
+ past the semicolon. This ensures that e.g. "&lt;foo" is converted
+ to "<foo", but "&lt,foo" to "<,foo". */
+#define SKIP_SEMI(p, inc) (p += inc, p < end && *p == ';' ? ++p : p)
+
+struct tagstack_item {
+ const char *tagname_begin;
+ const char *tagname_end;
+ const char *contents_begin;
+ struct tagstack_item *prev;
+ struct tagstack_item *next;
+};
+
+static struct tagstack_item *
+tagstack_push (struct tagstack_item **head, struct tagstack_item **tail)
+{
+ struct tagstack_item *ts = xmalloc(sizeof(struct tagstack_item));
+ if (*head == NULL)
+ {
+ *head = *tail = ts;
+ ts->prev = ts->next = NULL;
+ }
+ else
+ {
+ (*tail)->next = ts;
+ ts->prev = *tail;
+ *tail = ts;
+ ts->next = NULL;
+ }
+
+ return ts;
+}
+
+/* remove ts and everything after it from the stack */
+static void
+tagstack_pop (struct tagstack_item **head, struct tagstack_item **tail,
+ struct tagstack_item *ts)
+{
+ if (*head == NULL)
+ return;
+
+ if (ts == *tail)
+ {
+ if (ts == *head)
+ {
+ xfree (ts);
+ *head = *tail = NULL;
+ }
+ else
+ {
+ ts->prev->next = NULL;
+ *tail = ts->prev;
+ xfree (ts);
+ }
+ }
+ else
+ {
+ if (ts == *head)
+ {
+ *head = NULL;
+ }
+ *tail = ts->prev;
+
+ if (ts->prev)
+ {
+ ts->prev->next = NULL;
+ }
+ while (ts)
+ {
+ struct tagstack_item *p = ts->next;
+ xfree (ts);
+ ts = p;
+ }
+ }
+}
+
+static struct tagstack_item *
+tagstack_find (struct tagstack_item *tail, const char *tagname_begin,
+ const char *tagname_end)
+{
+ int len = tagname_end - tagname_begin;
+ while (tail)
+ {
+ if (len == (tail->tagname_end - tail->tagname_begin))
+ {
+ if (0 == strncasecmp (tail->tagname_begin, tagname_begin, len))
+ return tail;
+ }
+ tail = tail->prev;
+ }
+ return NULL;
+}
+
+/* Decode the HTML character entity at *PTR, considering END to be end
+ of buffer. It is assumed that the "&" character that marks the
+ beginning of the entity has been seen at *PTR-1. If a recognized
+ ASCII entity is seen, it is returned, and *PTR is moved to the end
+ of the entity. Otherwise, -1 is returned and *PTR left unmodified.
+
+ The recognized entities are: &lt, &gt, &amp, &apos, and &quot. */
+
+static int
+decode_entity (const char **ptr, const char *end)
+{
+ const char *p = *ptr;
+ int value = -1;
+
+ if (++p == end)
+ return -1;
+
+ switch (*p++)
+ {
+ case '#':
+ /* Process numeric entities "&#DDD;" and "&#xHH;". */
+ {
+ int digits = 0;
+ value = 0;
+ if (*p == 'x')
+ for (++p; value < 256 && p < end && c_isxdigit (*p); p++, digits++)
+ value = (value << 4) + _unhex (*p);
+ else
+ for (; value < 256 && p < end && c_isdigit (*p); p++, digits++)
+ value = (value * 10) + (*p - '0');
+ if (!digits)
+ return -1;
+ /* Don't interpret 128+ codes and NUL because we cannot
+ portably reinserted them into HTML. */
+ if (!value || (value & ~0x7f))
+ return -1;
+ *ptr = SKIP_SEMI (p, 0);
+ return value;
+ }
+ /* Process named ASCII entities. */
+ case 'g':
+ if (ENT1 (p, 't'))
+ value = '>', *ptr = SKIP_SEMI (p, 1);
+ break;
+ case 'l':
+ if (ENT1 (p, 't'))
+ value = '<', *ptr = SKIP_SEMI (p, 1);
+ break;
+ case 'a':
+ if (ENT2 (p, 'm', 'p'))
+ value = '&', *ptr = SKIP_SEMI (p, 2);
+ else if (ENT3 (p, 'p', 'o', 's'))
+ /* handle &apos for the sake of the XML/XHTML crowd. */
+ value = '\'', *ptr = SKIP_SEMI (p, 3);
+ break;
+ case 'q':
+ if (ENT3 (p, 'u', 'o', 't'))
+ value = '\"', *ptr = SKIP_SEMI (p, 3);
+ break;
+ }
+ return value;
+}
+#undef ENT1
+#undef ENT2
+#undef ENT3
+#undef FITS
+#undef SKIP_SEMI
+
+enum {
+ AP_DOWNCASE = 1,
+ AP_DECODE_ENTITIES = 2,
+ AP_TRIM_BLANKS = 4
+};
+
+/* Copy the text in the range [BEG, END) to POOL, optionally
+ performing operations specified by FLAGS. FLAGS may be any
+ combination of AP_DOWNCASE, AP_DECODE_ENTITIES and AP_TRIM_BLANKS
+ with the following meaning:
+
+ * AP_DOWNCASE -- downcase all the letters;
+
+ * AP_DECODE_ENTITIES -- decode the named and numeric entities in
+ the ASCII range when copying the string.
+
+ * AP_TRIM_BLANKS -- ignore blanks at the beginning and at the end
+ of text, as well as embedded newlines. */
+
+static void
+convert_and_copy (struct pool *pool, const char *beg, const char *end, int flags)
+{
+ int old_tail = pool->tail;
+
+ /* Skip blanks if required. We must do this before entities are
+ processed, so that blanks can still be inserted as, for instance,
+ `&#32;'. */
+ if (flags & AP_TRIM_BLANKS)
+ {
+ while (beg < end && c_isspace (*beg))
+ ++beg;
+ while (end > beg && c_isspace (end[-1]))
+ --end;
+ }
+
+ if (flags & AP_DECODE_ENTITIES)
+ {
+ /* Grow the pool, then copy the text to the pool character by
+ character, processing the encountered entities as we go
+ along.
+
+ It's safe (and necessary) to grow the pool in advance because
+ processing the entities can only *shorten* the string, it can
+ never lengthen it. */
+ const char *from = beg;
+ char *to;
+ bool squash_newlines = !!(flags & AP_TRIM_BLANKS);
+
+ POOL_GROW (pool, end - beg);
+ to = pool->contents + pool->tail;
+
+ while (from < end)
+ {
+ if (*from == '&')
+ {
+ int entity = decode_entity (&from, end);
+ if (entity != -1)
+ *to++ = entity;
+ else
+ *to++ = *from++;
+ }
+ else if ((*from == '\n' || *from == '\r') && squash_newlines)
+ ++from;
+ else
+ *to++ = *from++;
+ }
+ /* Verify that we haven't exceeded the original size. (It
+ shouldn't happen, hence the assert.) */
+ assert (to - (pool->contents + pool->tail) <= end - beg);
+
+ /* Make POOL's tail point to the position following the string
+ we've written. */
+ pool->tail = to - pool->contents;
+ POOL_APPEND_CHR (pool, '\0');
+ }
+ else
+ {
+ /* Just copy the text to the pool. */
+ POOL_APPEND (pool, beg, end);
+ POOL_APPEND_CHR (pool, '\0');
+ }
+
+ if (flags & AP_DOWNCASE)
+ {
+ char *p = pool->contents + old_tail;
+ for (; *p; p++)
+ *p = c_tolower (*p);
+ }
+}
+
+/* Originally we used to adhere to rfc 1866 here, and allowed only
+ letters, digits, periods, and hyphens as names (of tags or
+ attributes). However, this broke too many pages which used
+ proprietary or strange attributes, e.g. <img src="a.gif"
+ v:shapes="whatever">.
+
+ So now we allow any character except:
+ * whitespace
+ * 8-bit and control chars
+ * characters that clearly cannot be part of name:
+ '=', '<', '>', '/'.
+
+ This only affects attribute and tag names; attribute values allow
+ an even greater variety of characters. */
+
+#define NAME_CHAR_P(x) ((x) > 32 && (x) < 127 \
+ && (x) != '=' && (x) != '<' && (x) != '>' \
+ && (x) != '/')
+
+#ifdef STANDALONE
+static int comment_backout_count;
+#endif
+
+/* Advance over an SGML declaration, such as <!DOCTYPE ...>. In
+ strict comments mode, this is used for skipping over comments as
+ well.
+
+ To recap: any SGML declaration may have comments associated with
+ it, e.g.
+ <!MY-DECL -- isn't this fun? -- foo bar>
+
+ An HTML comment is merely an empty declaration (<!>) with a comment
+ attached, like this:
+ <!-- some stuff here -->
+
+ Several comments may be embedded in one comment declaration:
+ <!-- have -- -- fun -->
+
+ Whitespace is allowed between and after the comments, but not
+ before the first comment. Additionally, this function attempts to
+ handle double quotes in SGML declarations correctly. */
+
+static const char *
+advance_declaration (const char *beg, const char *end)
+{
+ const char *p = beg;
+ char quote_char = '\0'; /* shut up, gcc! */
+ char ch;
+
+ enum {
+ AC_S_DONE,
+ AC_S_BACKOUT,
+ AC_S_BANG,
+ AC_S_DEFAULT,
+ AC_S_DCLNAME,
+ AC_S_DASH1,
+ AC_S_DASH2,
+ AC_S_COMMENT,
+ AC_S_DASH3,
+ AC_S_DASH4,
+ AC_S_QUOTE1,
+ AC_S_IN_QUOTE,
+ AC_S_QUOTE2
+ } state = AC_S_BANG;
+
+ if (beg == end)
+ return beg;
+ ch = *p++;
+
+ /* It looked like a good idea to write this as a state machine, but
+ now I wonder... */
+
+ while (state != AC_S_DONE && state != AC_S_BACKOUT)
+ {
+ if (p == end)
+ state = AC_S_BACKOUT;
+ switch (state)
+ {
+ case AC_S_DONE:
+ case AC_S_BACKOUT:
+ break;
+ case AC_S_BANG:
+ if (ch == '!')
+ {
+ ch = *p++;
+ state = AC_S_DEFAULT;
+ }
+ else
+ state = AC_S_BACKOUT;
+ break;
+ case AC_S_DEFAULT:
+ switch (ch)
+ {
+ case '-':
+ state = AC_S_DASH1;
+ break;
+ case ' ':
+ case '\t':
+ case '\r':
+ case '\n':
+ ch = *p++;
+ break;
+ case '<':
+ case '>':
+ state = AC_S_DONE;
+ break;
+ case '\'':
+ case '\"':
+ state = AC_S_QUOTE1;
+ break;
+ default:
+ if (NAME_CHAR_P (ch))
+ state = AC_S_DCLNAME;
+ else
+ state = AC_S_BACKOUT;
+ break;
+ }
+ break;
+ case AC_S_DCLNAME:
+ if (ch == '-')
+ state = AC_S_DASH1;
+ else if (NAME_CHAR_P (ch))
+ ch = *p++;
+ else
+ state = AC_S_DEFAULT;
+ break;
+ case AC_S_QUOTE1:
+ /* We must use 0x22 because broken assert macros choke on
+ '"' and '\"'. */
+ assert (ch == '\'' || ch == 0x22);
+ quote_char = ch; /* cheating -- I really don't feel like
+ introducing more different states for
+ different quote characters. */
+ ch = *p++;
+ state = AC_S_IN_QUOTE;
+ break;
+ case AC_S_IN_QUOTE:
+ if (ch == quote_char)
+ state = AC_S_QUOTE2;
+ else
+ ch = *p++;
+ break;
+ case AC_S_QUOTE2:
+ assert (ch == quote_char);
+ ch = *p++;
+ state = AC_S_DEFAULT;
+ break;
+ case AC_S_DASH1:
+ assert (ch == '-');
+ ch = *p++;
+ state = AC_S_DASH2;
+ break;
+ case AC_S_DASH2:
+ switch (ch)
+ {
+ case '-':
+ ch = *p++;
+ state = AC_S_COMMENT;
+ break;
+ default:
+ state = AC_S_BACKOUT;
+ }
+ break;
+ case AC_S_COMMENT:
+ switch (ch)
+ {
+ case '-':
+ state = AC_S_DASH3;
+ break;
+ default:
+ ch = *p++;
+ break;
+ }
+ break;
+ case AC_S_DASH3:
+ assert (ch == '-');
+ ch = *p++;
+ state = AC_S_DASH4;
+ break;
+ case AC_S_DASH4:
+ switch (ch)
+ {
+ case '-':
+ ch = *p++;
+ state = AC_S_DEFAULT;
+ break;
+ default:
+ state = AC_S_COMMENT;
+ break;
+ }
+ break;
+ }
+ }
+
+ if (state == AC_S_BACKOUT)
+ {
+#ifdef STANDALONE
+ ++comment_backout_count;
+#endif
+ return beg + 1;
+ }
+ return p;
+}
+
+/* Find the first occurrence of the substring "-->" in [BEG, END) and
+ return the pointer to the character after the substring. If the
+ substring is not found, return NULL. */
+
+static const char *
+find_comment_end (const char *beg, const char *end)
+{
+ /* Open-coded Boyer-Moore search for "-->". Examine the third char;
+ if it's not '>' or '-', advance by three characters. Otherwise,
+ look at the preceding characters and try to find a match. */
+
+ const char *p = beg - 1;
+
+ while ((p += 3) < end)
+ switch (p[0])
+ {
+ case '>':
+ if (p[-1] == '-' && p[-2] == '-')
+ return p + 1;
+ break;
+ case '-':
+ at_dash:
+ if (p[-1] == '-')
+ {
+ at_dash_dash:
+ if (++p == end) return NULL;
+ switch (p[0])
+ {
+ case '>': return p + 1;
+ case '-': goto at_dash_dash;
+ }
+ }
+ else
+ {
+ if ((p += 2) >= end) return NULL;
+ switch (p[0])
+ {
+ case '>':
+ if (p[-1] == '-')
+ return p + 1;
+ break;
+ case '-':
+ goto at_dash;
+ }
+ }
+ }
+ return NULL;
+}
+
+/* Return true if the string containing of characters inside [b, e) is
+ present in hash table HT. */
+
+static bool
+name_allowed (const struct hash_table *ht, const char *b, const char *e)
+{
+ char buf[256], *copy;
+ size_t len = e - b;
+ bool ret;
+
+ if (!ht)
+ return true;
+
+ if (len < sizeof (buf))
+ copy = buf;
+ else
+ copy = xmalloc (len + 1);
+
+ memcpy (copy, b, len);
+ copy[len] = 0;
+
+ ret = hash_table_get (ht, copy) != NULL;
+
+ if (copy != buf)
+ xfree (copy);
+
+ return ret;
+}
+
+/* Advance P (a char pointer), with the explicit intent of being able
+ to read the next character. If this is not possible, go to finish. */
+
+#define ADVANCE(p) do { \
+ ++p; \
+ if (p >= end) \
+ goto finish; \
+} while (0)
+
+/* Skip whitespace, if any. */
+
+#define SKIP_WS(p) do { \
+ while (c_isspace (*p)) { \
+ ADVANCE (p); \
+ } \
+} while (0)
+
+#ifdef STANDALONE
+static int tag_backout_count;
+#endif
+
+/* Map MAPFUN over HTML tags in TEXT, which is SIZE characters long.
+ MAPFUN will be called with two arguments: pointer to an initialized
+ struct taginfo, and MAPARG.
+
+ ALLOWED_TAGS and ALLOWED_ATTRIBUTES are hash tables the keys of
+ which are the tags and attribute names that this function should
+ use. If ALLOWED_TAGS is NULL, all tags are processed; if
+ ALLOWED_ATTRIBUTES is NULL, all attributes are returned.
+
+ (Obviously, the caller can filter out unwanted tags and attributes
+ just as well, but this is just an optimization designed to avoid
+ unnecessary copying of tags/attributes which the caller doesn't
+ care about.) */
+
+void
+map_html_tags (const char *text, int size,
+ void (*mapfun) (struct taginfo *, void *), void *maparg,
+ int flags,
+ const struct hash_table *allowed_tags,
+ const struct hash_table *allowed_attributes)
+{
+ /* storage for strings passed to MAPFUN callback; if 256 bytes is
+ too little, POOL_APPEND allocates more with malloc. */
+ char pool_initial_storage[256];
+ struct pool pool;
+
+ const char *p = text;
+ const char *end = text + size;
+
+ struct attr_pair attr_pair_initial_storage[8];
+ int attr_pair_size = countof (attr_pair_initial_storage);
+ bool attr_pair_resized = false;
+ struct attr_pair *pairs = attr_pair_initial_storage;
+
+ struct tagstack_item *head = NULL;
+ struct tagstack_item *tail = NULL;
+
+ if (!size)
+ return;
+
+ POOL_INIT (&pool, pool_initial_storage, countof (pool_initial_storage));
+
+ {
+ int nattrs, end_tag;
+ const char *tag_name_begin, *tag_name_end;
+ const char *tag_start_position;
+ bool uninteresting_tag;
+
+ look_for_tag:
+ POOL_REWIND (&pool);
+
+ nattrs = 0;
+ end_tag = 0;
+
+ /* Find beginning of tag. We use memchr() instead of the usual
+ looping with ADVANCE() for speed. */
+ p = memchr (p, '<', end - p);
+ if (!p)
+ goto finish;
+
+ tag_start_position = p;
+ ADVANCE (p);
+
+ /* Establish the type of the tag (start-tag, end-tag or
+ declaration). */
+ if (*p == '!')
+ {
+ if (!(flags & MHT_STRICT_COMMENTS)
+ && p + 3 < end && p[1] == '-' && p[2] == '-')
+ {
+ /* If strict comments are not enforced and if we know
+ we're looking at a comment, simply look for the
+ terminating "-->". Non-strict is the default because
+ it works in other browsers and most HTML writers can't
+ be bothered with getting the comments right. */
+ const char *comment_end = find_comment_end (p + 3, end);
+ if (comment_end)
+ p = comment_end;
+ }
+ else
+ {
+ /* Either in strict comment mode or looking at a non-empty
+ declaration. Real declarations are much less likely to
+ be misused the way comments are, so advance over them
+ properly regardless of strictness. */
+ p = advance_declaration (p, end);
+ }
+ if (p == end)
+ goto finish;
+ goto look_for_tag;
+ }
+ else if (*p == '/')
+ {
+ end_tag = 1;
+ ADVANCE (p);
+ }
+ tag_name_begin = p;
+ while (NAME_CHAR_P (*p))
+ ADVANCE (p);
+ if (p == tag_name_begin)
+ goto look_for_tag;
+ tag_name_end = p;
+ SKIP_WS (p);
+
+ if (!end_tag)
+ {
+ struct tagstack_item *ts = tagstack_push (&head, &tail);
+ if (ts)
+ {
+ ts->tagname_begin = tag_name_begin;
+ ts->tagname_end = tag_name_end;
+ ts->contents_begin = NULL;
+ }
+ }
+
+ if (end_tag && *p != '>' && *p != '<')
+ goto backout_tag;
+
+ if (!name_allowed (allowed_tags, tag_name_begin, tag_name_end))
+ /* We can't just say "goto look_for_tag" here because we need
+ the loop below to properly advance over the tag's attributes. */
+ uninteresting_tag = true;
+ else
+ {
+ uninteresting_tag = false;
+ convert_and_copy (&pool, tag_name_begin, tag_name_end, AP_DOWNCASE);
+ }
+
+ /* Find the attributes. */
+ while (1)
+ {
+ const char *attr_name_begin, *attr_name_end;
+ const char *attr_value_begin, *attr_value_end;
+ const char *attr_raw_value_begin, *attr_raw_value_end;
+ int operation = AP_DOWNCASE; /* stupid compiler. */
+
+ SKIP_WS (p);
+
+ if (*p == '/')
+ {
+ /* A slash at this point means the tag is about to be
+ closed. This is legal in XML and has been popularized
+ in HTML via XHTML. */
+ /* <foo a=b c=d /> */
+ /* ^ */
+ ADVANCE (p);
+ SKIP_WS (p);
+ if (*p != '<' && *p != '>')
+ goto backout_tag;
+ }
+
+ /* Check for end of tag definition. */
+ if (*p == '<' || *p == '>')
+ break;
+
+ /* Establish bounds of attribute name. */
+ attr_name_begin = p; /* <foo bar ...> */
+ /* ^ */
+ while (NAME_CHAR_P (*p))
+ ADVANCE (p);
+ attr_name_end = p; /* <foo bar ...> */
+ /* ^ */
+ if (attr_name_begin == attr_name_end)
+ goto backout_tag;
+
+ /* Establish bounds of attribute value. */
+ SKIP_WS (p);
+
+ if (NAME_CHAR_P (*p) || *p == '/' || *p == '<' || *p == '>')
+ {
+ /* Minimized attribute syntax allows `=' to be omitted.
+ For example, <UL COMPACT> is a valid shorthand for <UL
+ COMPACT="compact">. Even if such attributes are not
+ useful to Wget, we need to support them, so that the
+ tags containing them can be parsed correctly. */
+ attr_raw_value_begin = attr_value_begin = attr_name_begin;
+ attr_raw_value_end = attr_value_end = attr_name_end;
+ }
+ else if (*p == '=')
+ {
+ ADVANCE (p);
+ SKIP_WS (p);
+ if (*p == '\"' || *p == '\'')
+ {
+ bool newline_seen = false;
+ char quote_char = *p;
+ attr_raw_value_begin = p;
+ ADVANCE (p);
+ attr_value_begin = p; /* <foo bar="baz"> */
+ /* ^ */
+ while (*p != quote_char)
+ {
+ if (!newline_seen && *p == '\n')
+ {
+ /* If a newline is seen within the quotes, it
+ is most likely that someone forgot to close
+ the quote. In that case, we back out to
+ the value beginning, and terminate the tag
+ at either `>' or the delimiter, whichever
+ comes first. Such a tag terminated at `>'
+ is discarded. */
+ p = attr_value_begin;
+ newline_seen = true;
+ continue;
+ }
+ else if (newline_seen && (*p == '<' || *p == '>'))
+ break;
+ ADVANCE (p);
+ }
+ attr_value_end = p; /* <foo bar="baz"> */
+ /* ^ */
+ if (*p == quote_char)
+ ADVANCE (p);
+ else
+ goto look_for_tag;
+ attr_raw_value_end = p; /* <foo bar="baz"> */
+ /* ^ */
+ operation = AP_DECODE_ENTITIES;
+ if (flags & MHT_TRIM_VALUES)
+ operation |= AP_TRIM_BLANKS;
+ }
+ else
+ {
+ attr_value_begin = p; /* <foo bar=baz> */
+ /* ^ */
+ /* According to SGML, a name token should consist only
+ of alphanumerics, . and -. However, this is often
+ violated by, for instance, `%' in `width=75%'.
+ We'll be liberal and allow just about anything as
+ an attribute value. */
+ while (!c_isspace (*p) && *p != '<' && *p != '>')
+ ADVANCE (p);
+ attr_value_end = p; /* <foo bar=baz qux=quix> */
+ /* ^ */
+ if (attr_value_begin == attr_value_end)
+ /* <foo bar=> */
+ /* ^ */
+ goto backout_tag;
+ attr_raw_value_begin = attr_value_begin;
+ attr_raw_value_end = attr_value_end;
+ operation = AP_DECODE_ENTITIES;
+ }
+ }
+ else
+ {
+ /* We skipped the whitespace and found something that is
+ neither `=' nor the beginning of the next attribute's
+ name. Back out. */
+ goto backout_tag; /* <foo bar [... */
+ /* ^ */
+ }
+
+ /* If we're not interested in the tag, don't bother with any
+ of the attributes. */
+ if (uninteresting_tag)
+ continue;
+
+ /* If we aren't interested in the attribute, skip it. We
+ cannot do this test any sooner, because our text pointer
+ needs to correctly advance over the attribute. */
+ if (!name_allowed (allowed_attributes, attr_name_begin, attr_name_end))
+ continue;
+
+ GROW_ARRAY (pairs, attr_pair_size, nattrs + 1, attr_pair_resized,
+ struct attr_pair);
+
+ pairs[nattrs].name_pool_index = pool.tail;
+ convert_and_copy (&pool, attr_name_begin, attr_name_end, AP_DOWNCASE);
+
+ pairs[nattrs].value_pool_index = pool.tail;
+ convert_and_copy (&pool, attr_value_begin, attr_value_end, operation);
+ pairs[nattrs].value_raw_beginning = attr_raw_value_begin;
+ pairs[nattrs].value_raw_size = (attr_raw_value_end
+ - attr_raw_value_begin);
+ ++nattrs;
+ }
+
+ if (!end_tag && tail && (tail->tagname_begin == tag_name_begin))
+ {
+ tail->contents_begin = p+1;
+ }
+
+ if (uninteresting_tag)
+ {
+ ADVANCE (p);
+ goto look_for_tag;
+ }
+
+ /* By now, we have a valid tag with a name and zero or more
+ attributes. Fill in the data and call the mapper function. */
+ {
+ int i;
+ struct taginfo taginfo;
+ struct tagstack_item *ts = NULL;
+
+ taginfo.name = pool.contents;
+ taginfo.end_tag_p = end_tag;
+ taginfo.nattrs = nattrs;
+ /* We fill in the char pointers only now, when pool can no
+ longer get realloc'ed. If we did that above, we could get
+ hosed by reallocation. Obviously, after this point, the pool
+ may no longer be grown. */
+ for (i = 0; i < nattrs; i++)
+ {
+ pairs[i].name = pool.contents + pairs[i].name_pool_index;
+ pairs[i].value = pool.contents + pairs[i].value_pool_index;
+ }
+ taginfo.attrs = pairs;
+ taginfo.start_position = tag_start_position;
+ taginfo.end_position = p + 1;
+ taginfo.contents_begin = NULL;
+ taginfo.contents_end = NULL;
+
+ if (end_tag)
+ {
+ ts = tagstack_find (tail, tag_name_begin, tag_name_end);
+ if (ts)
+ {
+ if (ts->contents_begin)
+ {
+ taginfo.contents_begin = ts->contents_begin;
+ taginfo.contents_end = tag_start_position;
+ }
+ tagstack_pop (&head, &tail, ts);
+ }
+ }
+
+ mapfun (&taginfo, maparg);
+ if (*p != '<')
+ ADVANCE (p);
+ }
+ goto look_for_tag;
+
+ backout_tag:
+#ifdef STANDALONE
+ ++tag_backout_count;
+#endif
+ /* The tag wasn't really a tag. Treat its contents as ordinary
+ data characters. */
+ p = tag_start_position + 1;
+ goto look_for_tag;
+ }
+
+ finish:
+ POOL_FREE (&pool);
+ if (attr_pair_resized)
+ xfree (pairs);
+ /* pop any tag stack that's left */
+ tagstack_pop (&head, &tail, head);
+}
+
+#undef ADVANCE
+#undef SKIP_WS
+#undef SKIP_NON_WS
+
+#ifdef STANDALONE
+static void
+test_mapper (struct taginfo *taginfo, void *arg)
+{
+ int i;
+
+ printf ("%s%s", taginfo->end_tag_p ? "/" : "", taginfo->name);
+ for (i = 0; i < taginfo->nattrs; i++)
+ printf (" %s=%s", taginfo->attrs[i].name, taginfo->attrs[i].value);
+ putchar ('\n');
+ ++*(int *)arg;
+}
+
+int main ()
+{
+ int size = 256;
+ char *x = xmalloc (size);
+ int length = 0;
+ int read_count;
+ int tag_counter = 0;
+
+#ifdef ENABLE_NLS
+ /* Set the current locale. */
+ setlocale (LC_ALL, "");
+ /* Set the text message domain. */
+ bindtextdomain ("wget", LOCALEDIR);
+ textdomain ("wget");
+#endif /* ENABLE_NLS */
+
+ while ((read_count = fread (x + length, 1, size - length, stdin)))
+ {
+ length += read_count;
+ size <<= 1;
+ x = xrealloc (x, size);
+ }
+
+ map_html_tags (x, length, test_mapper, &tag_counter, 0, NULL, NULL);
+ printf ("TAGS: %d\n", tag_counter);
+ printf ("Tag backouts: %d\n", tag_backout_count);
+ printf ("Comment backouts: %d\n", comment_backout_count);
+ return 0;
+}
+#endif /* STANDALONE */
diff --git a/src/html-parse.h b/src/html-parse.h
new file mode 100644
index 0000000..eae8e3c
--- /dev/null
+++ b/src/html-parse.h
@@ -0,0 +1,71 @@
+/* Declarations for html-parse.c.
+ Copyright (C) 1998-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef HTML_PARSE_H
+#define HTML_PARSE_H
+
+struct attr_pair {
+ char *name; /* attribute name */
+ char *value; /* attribute value */
+
+ /* Needed for URL conversion; the places where the value begins and
+ ends, including the quotes and everything. */
+ const char *value_raw_beginning;
+ int value_raw_size;
+
+ /* Used internally by map_html_tags. */
+ int name_pool_index, value_pool_index;
+};
+
+struct taginfo {
+ char *name; /* tag name */
+ int end_tag_p; /* whether this is an end-tag */
+ int nattrs; /* number of attributes */
+ struct attr_pair *attrs; /* attributes */
+
+ const char *start_position; /* start position of tag */
+ const char *end_position; /* end position of tag */
+
+ const char *contents_begin; /* delimiters of tag contents */
+ const char *contents_end; /* only valid if end_tag_p */
+};
+
+struct hash_table; /* forward declaration */
+
+/* Flags for map_html_tags: */
+#define MHT_STRICT_COMMENTS 1 /* use strict comment interpretation */
+#define MHT_TRIM_VALUES 2 /* trim attribute values, e.g. interpret
+ <a href=" foo "> as "foo" */
+
+void map_html_tags (const char *, int,
+ void (*) (struct taginfo *, void *), void *, int,
+ const struct hash_table *, const struct hash_table *);
+
+#endif /* HTML_PARSE_H */
diff --git a/src/html-url.c b/src/html-url.c
new file mode 100644
index 0000000..b80cf26
--- /dev/null
+++ b/src/html-url.c
@@ -0,0 +1,977 @@
+/* Collect URLs from HTML source.
+ Copyright (C) 1998-2012, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <assert.h>
+
+#include "exits.h"
+#include "html-parse.h"
+#include "url.h"
+#include "utils.h"
+#include "hash.h"
+#include "convert.h"
+#include "recur.h"
+#include "html-url.h"
+#include "css-url.h"
+#include "c-strcase.h"
+
+typedef void (*tag_handler_t) (int, struct taginfo *, struct map_context *);
+
+#define DECLARE_TAG_HANDLER(fun) \
+ static void fun (int, struct taginfo *, struct map_context *)
+
+DECLARE_TAG_HANDLER (tag_find_urls);
+DECLARE_TAG_HANDLER (tag_handle_base);
+DECLARE_TAG_HANDLER (tag_handle_form);
+DECLARE_TAG_HANDLER (tag_handle_img);
+DECLARE_TAG_HANDLER (tag_handle_link);
+DECLARE_TAG_HANDLER (tag_handle_meta);
+
+enum {
+ TAG_A,
+ TAG_APPLET,
+ TAG_AREA,
+ TAG_BASE,
+ TAG_BGSOUND,
+ TAG_BODY,
+ TAG_EMBED,
+ TAG_FIG,
+ TAG_FORM,
+ TAG_FRAME,
+ TAG_IFRAME,
+ TAG_IMG,
+ TAG_INPUT,
+ TAG_LAYER,
+ TAG_LINK,
+ TAG_META,
+ TAG_OBJECT,
+ TAG_OVERLAY,
+ TAG_SCRIPT,
+ TAG_TABLE,
+ TAG_TD,
+ TAG_TH,
+ TAG_VIDEO,
+ TAG_AUDIO,
+ TAG_SOURCE
+};
+
+/* The list of known tags and functions used for handling them. Most
+ tags are simply harvested for URLs. */
+static struct known_tag {
+ int tagid;
+ const char *name;
+ tag_handler_t handler;
+} known_tags[] = {
+ { TAG_A, "a", tag_find_urls },
+ { TAG_APPLET, "applet", tag_find_urls },
+ { TAG_AREA, "area", tag_find_urls },
+ { TAG_BASE, "base", tag_handle_base },
+ { TAG_BGSOUND, "bgsound", tag_find_urls },
+ { TAG_BODY, "body", tag_find_urls },
+ { TAG_EMBED, "embed", tag_find_urls },
+ { TAG_FIG, "fig", tag_find_urls },
+ { TAG_FORM, "form", tag_handle_form },
+ { TAG_FRAME, "frame", tag_find_urls },
+ { TAG_IFRAME, "iframe", tag_find_urls },
+ { TAG_IMG, "img", tag_handle_img },
+ { TAG_INPUT, "input", tag_find_urls },
+ { TAG_LAYER, "layer", tag_find_urls },
+ { TAG_LINK, "link", tag_handle_link },
+ { TAG_META, "meta", tag_handle_meta },
+ { TAG_OBJECT, "object", tag_find_urls },
+ { TAG_OVERLAY, "overlay", tag_find_urls },
+ { TAG_SCRIPT, "script", tag_find_urls },
+ { TAG_TABLE, "table", tag_find_urls },
+ { TAG_TD, "td", tag_find_urls },
+ { TAG_TH, "th", tag_find_urls },
+ { TAG_VIDEO, "video", tag_find_urls },
+ { TAG_AUDIO, "audio", tag_find_urls },
+ { TAG_SOURCE, "source", tag_find_urls }
+};
+
+/* tag_url_attributes documents which attributes of which tags contain
+ URLs to harvest. It is used by tag_find_urls. */
+
+/* Defines for the FLAGS. */
+
+/* The link is "inline", i.e. needs to be retrieved for this document
+ to be correctly rendered. Inline links include inlined images,
+ stylesheets, children frames, etc. */
+#define ATTR_INLINE 1
+
+/* The link is expected to yield HTML contents. It's important not to
+ try to follow HTML obtained by following e.g. <img src="...">
+ regardless of content-type. Doing this causes infinite loops for
+ "images" that return non-404 error pages with links to the same
+ image. */
+#define ATTR_HTML 2
+
+/* For tags handled by tag_find_urls: attributes that contain URLs to
+ download. */
+static struct {
+ int tagid;
+ const char *attr_name;
+ int flags;
+} tag_url_attributes[] = {
+ { TAG_A, "href", ATTR_HTML },
+ { TAG_APPLET, "code", ATTR_INLINE },
+ { TAG_AREA, "href", ATTR_HTML },
+ { TAG_BGSOUND, "src", ATTR_INLINE },
+ { TAG_BODY, "background", ATTR_INLINE },
+ { TAG_EMBED, "href", ATTR_HTML },
+ { TAG_EMBED, "src", ATTR_INLINE | ATTR_HTML },
+ { TAG_FIG, "src", ATTR_INLINE },
+ { TAG_FRAME, "src", ATTR_INLINE | ATTR_HTML },
+ { TAG_IFRAME, "src", ATTR_INLINE | ATTR_HTML },
+ { TAG_IMG, "href", ATTR_INLINE },
+ { TAG_IMG, "lowsrc", ATTR_INLINE },
+ { TAG_IMG, "src", ATTR_INLINE },
+ { TAG_INPUT, "src", ATTR_INLINE },
+ { TAG_LAYER, "src", ATTR_INLINE | ATTR_HTML },
+ { TAG_OBJECT, "data", ATTR_INLINE },
+ { TAG_OVERLAY, "src", ATTR_INLINE | ATTR_HTML },
+ { TAG_SCRIPT, "src", ATTR_INLINE },
+ { TAG_TABLE, "background", ATTR_INLINE },
+ { TAG_TD, "background", ATTR_INLINE },
+ { TAG_TH, "background", ATTR_INLINE },
+ { TAG_VIDEO, "src", ATTR_INLINE },
+ { TAG_VIDEO, "poster", ATTR_INLINE },
+ { TAG_AUDIO, "src", ATTR_INLINE },
+ { TAG_AUDIO, "poster", ATTR_INLINE },
+ { TAG_SOURCE, "src", ATTR_INLINE }
+};
+
+/* The lists of interesting tags and attributes are built dynamically,
+ from the information above. However, some places in the code refer
+ to the attributes not mentioned here. We add them manually. */
+static const char *additional_attributes[] = {
+ "rel", /* used by tag_handle_link */
+ "type", /* used by tag_handle_link */
+ "http-equiv", /* used by tag_handle_meta */
+ "name", /* used by tag_handle_meta */
+ "content", /* used by tag_handle_meta */
+ "action", /* used by tag_handle_form */
+ "style", /* used by check_style_attr */
+ "srcset", /* used by tag_handle_img */
+};
+
+static struct hash_table *interesting_tags;
+static struct hash_table *interesting_attributes;
+
+/* Will contains the (last) charset found in 'http-equiv=content-type'
+ meta tags */
+static char *meta_charset;
+
+static void
+init_interesting (void)
+{
+ /* Init the variables interesting_tags and interesting_attributes
+ that are used by the HTML parser to know which tags and
+ attributes we're interested in. We initialize this only once,
+ for performance reasons.
+
+ Here we also make sure that what we put in interesting_tags
+ matches the user's preferences as specified through --ignore-tags
+ and --follow-tags. */
+
+ size_t i;
+ interesting_tags = make_nocase_string_hash_table (countof (known_tags));
+
+ /* First, add all the tags we know hot to handle, mapped to their
+ respective entries in known_tags. */
+ for (i = 0; i < countof (known_tags); i++)
+ hash_table_put (interesting_tags, known_tags[i].name, known_tags + i);
+
+ /* Then remove the tags ignored through --ignore-tags. */
+ if (opt.ignore_tags)
+ {
+ char **ignored;
+ for (ignored = opt.ignore_tags; *ignored; ignored++)
+ hash_table_remove (interesting_tags, *ignored);
+ }
+
+ /* If --follow-tags is specified, use only those tags. */
+ if (opt.follow_tags)
+ {
+ /* Create a new table intersecting --follow-tags and known_tags,
+ and use it as interesting_tags. */
+ struct hash_table *intersect = make_nocase_string_hash_table (0);
+ char **followed;
+ for (followed = opt.follow_tags; *followed; followed++)
+ {
+ struct known_tag *t = hash_table_get (interesting_tags, *followed);
+ if (!t)
+ continue; /* ignore unknown --follow-tags entries. */
+ hash_table_put (intersect, *followed, t);
+ }
+ hash_table_destroy (interesting_tags);
+ interesting_tags = intersect;
+ }
+
+ /* Add the attributes we care about. */
+ interesting_attributes = make_nocase_string_hash_table (10);
+ for (i = 0; i < countof (additional_attributes); i++)
+ hash_table_put (interesting_attributes, additional_attributes[i], "1");
+ for (i = 0; i < countof (tag_url_attributes); i++)
+ hash_table_put (interesting_attributes,
+ tag_url_attributes[i].attr_name, "1");
+}
+
+/* Find the value of attribute named NAME in the taginfo TAG. If the
+ attribute is not present, return NULL. If ATTRIND is non-NULL, the
+ index of the attribute in TAG will be stored there. */
+
+static char *
+find_attr (struct taginfo *tag, const char *name, int *attrind)
+{
+ int i;
+ for (i = 0; i < tag->nattrs; i++)
+ if (!c_strcasecmp (tag->attrs[i].name, name))
+ {
+ if (attrind)
+ *attrind = i;
+ return tag->attrs[i].value;
+ }
+ return NULL;
+}
+
+/* used for calls to append_url */
+#define ATTR_POS(tag, attrind, ctx) \
+ (tag->attrs[attrind].value_raw_beginning - ctx->text)
+#define ATTR_SIZE(tag, attrind) \
+ (tag->attrs[attrind].value_raw_size)
+
+/* Append LINK_URI to the urlpos structure that is being built.
+
+ LINK_URI will be merged with the current document base.
+*/
+
+struct urlpos *
+append_url (const char *link_uri, int position, int size,
+ struct map_context *ctx)
+{
+ int link_has_scheme = url_has_scheme (link_uri);
+ struct urlpos *newel;
+ const char *base = ctx->base ? ctx->base : ctx->parent_base;
+ struct url *url;
+
+ struct iri *iri = iri_new ();
+ set_uri_encoding (iri, opt.locale, true);
+ iri->utf8_encode = true;
+
+ if (!base)
+ {
+ DEBUGP (("%s: no base, merge will use \"%s\".\n",
+ ctx->document_file, link_uri));
+
+ if (!link_has_scheme)
+ {
+ /* Base URL is unavailable, and the link does not have a
+ location attached to it -- we have to give up. Since
+ this can only happen when using `--force-html -i', print
+ a warning. */
+ logprintf (LOG_NOTQUIET,
+ _("%s: Cannot resolve incomplete link %s.\n"),
+ ctx->document_file, link_uri);
+ iri_free (iri);
+ return NULL;
+ }
+
+ url = url_parse (link_uri, NULL, iri, false);
+ if (!url)
+ {
+ DEBUGP (("%s: link \"%s\" doesn't parse.\n",
+ ctx->document_file, link_uri));
+ iri_free (iri);
+ return NULL;
+ }
+ }
+ else
+ {
+ /* Merge BASE with LINK_URI, but also make sure the result is
+ canonicalized, i.e. that "../" have been resolved.
+ (parse_url will do that for us.) */
+
+ char *complete_uri = uri_merge (base, link_uri);
+
+ DEBUGP (("%s: merge(%s, %s) -> %s\n",
+ quotearg_n_style (0, escape_quoting_style, ctx->document_file),
+ quote_n (1, base),
+ quote_n (2, link_uri),
+ quotearg_n_style (3, escape_quoting_style, complete_uri)));
+
+ url = url_parse (complete_uri, NULL, iri, false);
+ if (!url)
+ {
+ DEBUGP (("%s: merged link \"%s\" doesn't parse.\n",
+ ctx->document_file, complete_uri));
+ xfree (complete_uri);
+ iri_free (iri);
+ return NULL;
+ }
+ xfree (complete_uri);
+ }
+
+ iri_free (iri);
+
+ DEBUGP (("appending %s to urlpos.\n", quote (url->url)));
+
+ newel = xnew0 (struct urlpos);
+ newel->url = url;
+ newel->pos = position;
+ newel->size = size;
+
+ /* A URL is relative if the host is not named, and the name does not
+ start with `/'. */
+ if (!link_has_scheme && *link_uri != '/')
+ newel->link_relative_p = 1;
+ else if (link_has_scheme)
+ newel->link_complete_p = 1;
+
+ /* Append the new URL maintaining the order by position. */
+ if (ctx->head == NULL)
+ ctx->head = newel;
+ else
+ {
+ struct urlpos *it, *prev = NULL;
+
+ it = ctx->head;
+ while (it && position > it->pos)
+ {
+ prev = it;
+ it = it->next;
+ }
+
+ newel->next = it;
+
+ if (prev)
+ prev->next = newel;
+ else
+ ctx->head = newel;
+ }
+
+ return newel;
+}
+
+static void
+check_style_attr (struct taginfo *tag, struct map_context *ctx)
+{
+ int attrind;
+ int raw_start;
+ int raw_len;
+ char *style = find_attr (tag, "style", &attrind);
+ if (!style)
+ return;
+
+ /* raw pos and raw size include the quotes, skip them when they are
+ present. */
+ raw_start = ATTR_POS (tag, attrind, ctx);
+ raw_len = ATTR_SIZE (tag, attrind);
+ if( *(char *)(ctx->text + raw_start) == '\''
+ || *(char *)(ctx->text + raw_start) == '"')
+ {
+ raw_start += 1;
+ raw_len -= 2;
+ }
+
+ if(raw_len <= 0)
+ return;
+
+ get_urls_css (ctx, raw_start, raw_len);
+}
+
+/* All the tag_* functions are called from collect_tags_mapper, as
+ specified by KNOWN_TAGS. */
+
+/* Default tag handler: collect URLs from attributes specified for
+ this tag by tag_url_attributes. */
+
+static void
+tag_find_urls (int tagid, struct taginfo *tag, struct map_context *ctx)
+{
+ size_t i;
+ int attrind;
+ int first = -1;
+
+ for (i = 0; i < countof (tag_url_attributes); i++)
+ if (tag_url_attributes[i].tagid == tagid)
+ {
+ /* We've found the index of tag_url_attributes where the
+ attributes of our tag begin. */
+ first = i;
+ break;
+ }
+ assert (first != -1);
+
+ /* Loop over the "interesting" attributes of this tag. In this
+ example, it will loop over "src" and "lowsrc".
+
+ <img src="foo.png" lowsrc="bar.png">
+
+ This has to be done in the outer loop so that the attributes are
+ processed in the same order in which they appear in the page.
+ This is required when converting links. */
+
+ for (attrind = 0; attrind < tag->nattrs; attrind++)
+ {
+ /* Find whether TAG/ATTRIND is a combination that contains a
+ URL. */
+ char *link = tag->attrs[attrind].value;
+ const size_t size = countof (tag_url_attributes);
+
+ /* If you're cringing at the inefficiency of the nested loops,
+ remember that they both iterate over a very small number of
+ items. The worst-case inner loop is for the IMG tag, which
+ has three attributes. */
+ for (i = first; i < size && tag_url_attributes[i].tagid == tagid; i++)
+ {
+ if (0 == strcasecmp (tag->attrs[attrind].name,
+ tag_url_attributes[i].attr_name))
+ {
+ struct urlpos *up = append_url (link, ATTR_POS(tag,attrind,ctx),
+ ATTR_SIZE(tag,attrind), ctx);
+ if (up)
+ {
+ int flags = tag_url_attributes[i].flags;
+ if (flags & ATTR_INLINE)
+ up->link_inline_p = 1;
+ if (flags & ATTR_HTML)
+ up->link_expect_html = 1;
+ }
+ }
+ }
+ }
+}
+
+/* Handle the BASE tag, for <base href=...>. */
+
+static void
+tag_handle_base (int tagid _GL_UNUSED, struct taginfo *tag, struct map_context *ctx)
+{
+ struct urlpos *base_urlpos;
+ int attrind;
+ char *newbase = find_attr (tag, "href", &attrind);
+ if (!newbase)
+ return;
+
+ base_urlpos = append_url (newbase, ATTR_POS(tag,attrind,ctx),
+ ATTR_SIZE(tag,attrind), ctx);
+ if (!base_urlpos)
+ return;
+ base_urlpos->ignore_when_downloading = 1;
+ base_urlpos->link_base_p = 1;
+
+ xfree (ctx->base);
+ if (ctx->parent_base)
+ ctx->base = uri_merge (ctx->parent_base, newbase);
+ else
+ ctx->base = xstrdup (newbase);
+}
+
+/* Mark the URL found in <form action=...> for conversion. */
+
+static void
+tag_handle_form (int tagid _GL_UNUSED, struct taginfo *tag, struct map_context *ctx)
+{
+ int attrind;
+ char *action = find_attr (tag, "action", &attrind);
+
+ if (action)
+ {
+ struct urlpos *up = append_url (action, ATTR_POS(tag,attrind,ctx),
+ ATTR_SIZE(tag,attrind), ctx);
+ if (up)
+ up->ignore_when_downloading = 1;
+ }
+}
+
+/* Handle the LINK tag. It requires special handling because how its
+ links will be followed in -p mode depends on the REL attribute. */
+
+static void
+tag_handle_link (int tagid _GL_UNUSED, struct taginfo *tag, struct map_context *ctx)
+{
+ int attrind;
+ char *href = find_attr (tag, "href", &attrind);
+
+ /* All <link href="..."> link references are external, except those
+ known not to be, such as style sheet and shortcut icon:
+
+ <link rel="stylesheet" href="...">
+ <link rel="shortcut icon" href="...">
+ */
+ if (href)
+ {
+ struct urlpos *up = append_url (href, ATTR_POS(tag,attrind,ctx),
+ ATTR_SIZE(tag,attrind), ctx);
+ if (up)
+ {
+ char *rel = find_attr (tag, "rel", NULL);
+ if (rel)
+ {
+ if (0 == c_strcasecmp (rel, "stylesheet"))
+ {
+ up->link_inline_p = 1;
+ up->link_expect_css = 1;
+ }
+ else if (0 == c_strcasecmp (rel, "shortcut icon"))
+ {
+ up->link_inline_p = 1;
+ }
+ else
+ {
+ /* The external ones usually point to HTML pages, such as
+ <link rel="next" href="...">
+ except when the type attribute says otherwise:
+ <link rel="alternate" type="application/rss+xml" href=".../?feed=rss2" />
+ */
+ char *type = find_attr (tag, "type", NULL);
+ if (!type || c_strcasecmp (type, "text/html") == 0)
+ up->link_expect_html = 1;
+ }
+ }
+ }
+ }
+}
+
+/* Handle the META tag. This requires special handling because of the
+ refresh feature and because of robot exclusion. */
+
+static void
+tag_handle_meta (int tagid _GL_UNUSED, struct taginfo *tag, struct map_context *ctx)
+{
+ char *name = find_attr (tag, "name", NULL);
+ char *http_equiv = find_attr (tag, "http-equiv", NULL);
+
+ if (http_equiv && 0 == c_strcasecmp (http_equiv, "refresh"))
+ {
+ /* Some pages use a META tag to specify that the page be
+ refreshed by a new page after a given number of seconds. The
+ general format for this is:
+
+ <meta http-equiv=Refresh content="NUMBER; URL=index2.html">
+
+ So we just need to skip past the "NUMBER; URL=" garbage to
+ get to the URL. */
+
+ struct urlpos *entry;
+ int attrind;
+ int timeout = 0;
+ char *p;
+
+ char *refresh = find_attr (tag, "content", &attrind);
+ if (!refresh)
+ return;
+
+ for (p = refresh; c_isdigit (*p); p++)
+ timeout = 10 * timeout + *p - '0';
+ if (*p++ != ';')
+ return;
+
+ while (c_isspace (*p))
+ ++p;
+ if (!( c_toupper (*p) == 'U'
+ && c_toupper (*(p + 1)) == 'R'
+ && c_toupper (*(p + 2)) == 'L'
+ && *(p + 3) == '='))
+ return;
+ p += 4;
+ while (c_isspace (*p))
+ ++p;
+
+ entry = append_url (p, ATTR_POS(tag,attrind,ctx),
+ ATTR_SIZE(tag,attrind), ctx);
+ if (entry)
+ {
+ entry->link_refresh_p = 1;
+ entry->refresh_timeout = timeout;
+ entry->link_expect_html = 1;
+ }
+ }
+ else if (http_equiv && 0 == c_strcasecmp (http_equiv, "content-type"))
+ {
+ /* Handle stuff like:
+ <meta http-equiv="Content-Type" content="text/html; charset=CHARSET"> */
+
+ char *mcharset;
+ char *content = find_attr (tag, "content", NULL);
+ if (!content)
+ return;
+
+ mcharset = parse_charset (content);
+ if (!mcharset)
+ return;
+
+ xfree (meta_charset);
+ meta_charset = mcharset;
+ }
+ else if (name && 0 == c_strcasecmp (name, "robots"))
+ {
+ /* Handle stuff like:
+ <meta name="robots" content="index,nofollow"> */
+ char *content = find_attr (tag, "content", NULL);
+ if (!content)
+ return;
+ if (!c_strcasecmp (content, "none"))
+ ctx->nofollow = true;
+ else
+ {
+ while (*content)
+ {
+ char *end;
+ /* Skip any initial whitespace. */
+ content += strspn (content, " \f\n\r\t\v");
+ /* Find the next occurrence of ',' or whitespace,
+ * or the end of the string. */
+ end = content + strcspn (content, ", \f\n\r\t\v");
+ if (!c_strncasecmp (content, "nofollow", end - content))
+ ctx->nofollow = true;
+ /* Skip past the next comma, if any. */
+ if (*end == ',')
+ ++end;
+ else
+ {
+ end = strchr (end, ',');
+ if (end)
+ ++end;
+ else
+ end = content + strlen (content);
+ }
+ content = end;
+ }
+ }
+ }
+}
+
+/* Handle the IMG tag. This requires special handling for the srcset attr,
+ while the traditional src/lowsrc/href attributes can be handled generically.
+*/
+
+static void
+tag_handle_img (int tagid, struct taginfo *tag, struct map_context *ctx) {
+ int attrind;
+ char *srcset;
+
+ /* Use the generic approach for the attributes without special syntax. */
+ tag_find_urls(tagid, tag, ctx);
+
+ srcset = find_attr (tag, "srcset", &attrind);
+ if (srcset)
+ {
+ /* These are relative to the input text. */
+ int base_ind = ATTR_POS (tag,attrind,ctx);
+ int size = strlen (srcset);
+
+ /* These are relative to srcset. */
+ int offset, url_start, url_end;
+
+ /* Make sure to line up base_ind with srcset[0], not outside quotes. */
+ if (ctx->text[base_ind] == '"' || ctx->text[base_ind] == '\'')
+ ++base_ind;
+
+ offset = 0;
+ while (offset < size)
+ {
+ bool has_descriptor = true;
+
+ /* Skip over initial whitespace and commas. Note there is no \v
+ in HTML5 whitespace. */
+ url_start = offset + strspn (srcset + offset, " \f\n\r\t,");
+
+ if (url_start == size)
+ return;
+
+ /* URL is any non-whitespace chars (including commas) - but with
+ trailing commas removed. */
+ url_end = url_start + strcspn (srcset + url_start, " \f\n\r\t");
+ while ((url_end - 1) > url_start && srcset[url_end - 1] == ',')
+ {
+ has_descriptor = false;
+ --url_end;
+ }
+
+ if (url_end > url_start)
+ {
+ char *url_text = strdupdelim (srcset + url_start,
+ srcset + url_end);
+ struct urlpos *up = append_url (url_text, base_ind + url_start,
+ url_end - url_start, ctx);
+ if (up)
+ {
+ up->link_inline_p = 1;
+ up->link_noquote_html_p = 1;
+ }
+ xfree (url_text);
+ }
+
+ /* If the URL wasn't terminated by a , there may also be a descriptor
+ which we just skip. */
+ if (has_descriptor)
+ {
+ /* This is comma-terminated, except there may be one level of
+ parentheses escaping that. */
+ bool in_paren = false;
+ for (offset = url_end; offset < size; ++offset)
+ {
+ char c = srcset[offset];
+ if (c == '(')
+ in_paren = true;
+ else if (c == ')' && in_paren)
+ in_paren = false;
+ else if (c == ',' && !in_paren)
+ break;
+ }
+ }
+ else
+ offset = url_end;
+ }
+ }
+}
+
+/* Dispatch the tag handler appropriate for the tag we're mapping
+ over. See known_tags[] for definition of tag handlers. */
+
+static void
+collect_tags_mapper (struct taginfo *tag, void *arg)
+{
+ struct map_context *ctx = (struct map_context *)arg;
+
+ /* Find the tag in our table of tags. This must not fail because
+ map_html_tags only returns tags found in interesting_tags.
+
+ I've changed this for now, I'm passing NULL as interesting_tags
+ to map_html_tags. This way we can check all tags for a style
+ attribute.
+ */
+ struct known_tag *t = hash_table_get (interesting_tags, tag->name);
+
+ if (t != NULL)
+ t->handler (t->tagid, tag, ctx);
+
+ check_style_attr (tag, ctx);
+
+ if (tag->end_tag_p && (0 == c_strcasecmp (tag->name, "style"))
+ && tag->contents_begin && tag->contents_end
+ && tag->contents_begin <= tag->contents_end)
+ {
+ /* parse contents */
+ get_urls_css (ctx, tag->contents_begin - ctx->text,
+ tag->contents_end - tag->contents_begin);
+ }
+}
+
+/* Analyze HTML tags FILE and construct a list of URLs referenced from
+ it. It merges relative links in FILE with URL. It is aware of
+ <base href=...> and does the right thing. */
+
+struct urlpos *
+get_urls_html_fm (const char *file, const struct file_memory *fm,
+ const char *url, bool *meta_disallow_follow,
+ struct iri *iri)
+{
+ struct map_context ctx;
+ int flags;
+
+ ctx.text = fm->content;
+ ctx.head = NULL;
+ ctx.base = NULL;
+ ctx.parent_base = url ? url : opt.base_href;
+ ctx.document_file = file;
+ ctx.nofollow = false;
+
+ if (!interesting_tags)
+ init_interesting ();
+
+ /* Specify MHT_TRIM_VALUES because of buggy HTML generators that
+ generate <a href=" foo"> instead of <a href="foo"> (browsers
+ ignore spaces as well.) If you really mean space, use &32; or
+ %20. MHT_TRIM_VALUES also causes squashing of embedded newlines,
+ e.g. in <img src="foo.[newline]html">. Such newlines are also
+ ignored by IE and Mozilla and are presumably introduced by
+ writing HTML with editors that force word wrap. */
+ flags = MHT_TRIM_VALUES;
+ if (opt.strict_comments)
+ flags |= MHT_STRICT_COMMENTS;
+
+ /* the NULL here used to be interesting_tags */
+ map_html_tags (fm->content, fm->length, collect_tags_mapper, &ctx, flags,
+ NULL, interesting_attributes);
+
+#ifdef ENABLE_IRI
+ /* Meta charset is only valid if there was no HTTP header Content-Type charset. */
+ /* This is true for HTTP 1.0 and 1.1. */
+ if (iri && !iri->content_encoding && meta_charset)
+ set_content_encoding (iri, meta_charset);
+#endif
+ xfree (meta_charset);
+
+ if (ctx.nofollow) {
+ logprintf(LOG_VERBOSE, _("no-follow attribute found in %s. Will not follow any links on this page\n"), file);
+ }
+ DEBUGP (("no-follow in %s: %d\n", file, ctx.nofollow));
+
+ if (meta_disallow_follow)
+ *meta_disallow_follow = ctx.nofollow;
+
+ xfree (ctx.base);
+ return ctx.head;
+}
+
+struct urlpos *
+get_urls_html (const char *file, const char *url, bool *meta_disallow_follow,
+ struct iri *iri)
+{
+ struct urlpos *urls;
+ struct file_memory *fm;
+
+ fm = wget_read_file (file);
+ if (!fm)
+ {
+ logprintf (LOG_NOTQUIET, "%s: %s\n", file, strerror (errno));
+ return NULL;
+ }
+ DEBUGP (("Loaded %s (size %s).\n", file, number_to_static_string (fm->length)));
+
+ urls = get_urls_html_fm (file, fm, url, meta_disallow_follow, iri);
+ wget_read_file_free (fm);
+ return urls;
+}
+
+/* This doesn't really have anything to do with HTML, but it's similar
+ to get_urls_html, so we put it here. */
+
+struct urlpos *
+get_urls_file (const char *file)
+{
+ struct file_memory *fm;
+ struct urlpos *head, *tail;
+ const char *text, *text_end;
+
+ /* Load the file. */
+ fm = wget_read_file (file);
+ if (!fm)
+ {
+ logprintf (LOG_NOTQUIET, "%s: %s\n", file, strerror (errno));
+ return NULL;
+ }
+ DEBUGP (("Loaded %s (size %s).\n", file, number_to_static_string (fm->length)));
+
+ head = tail = NULL;
+ text = fm->content;
+ text_end = fm->content + fm->length;
+ while (text < text_end)
+ {
+ int up_error_code;
+ char *url_text;
+ char *new_url;
+ struct urlpos *entry;
+ struct url *url;
+
+ const char *line_beg = text;
+ const char *line_end = memchr (text, '\n', text_end - text);
+ if (!line_end)
+ line_end = text_end;
+ else
+ ++line_end;
+ text = line_end;
+
+ /* Strip whitespace from the beginning and end of line. */
+ while (line_beg < line_end && c_isspace (*line_beg))
+ ++line_beg;
+ while (line_end > line_beg && c_isspace (*(line_end - 1)))
+ --line_end;
+
+ if (line_beg == line_end)
+ continue;
+
+ /* The URL is in the [line_beg, line_end) region. */
+
+ /* We must copy the URL to a zero-terminated string, and we
+ can't use alloca because we're in a loop. *sigh*. */
+ url_text = strdupdelim (line_beg, line_end);
+
+ if (opt.base_href)
+ {
+ /* Merge opt.base_href with URL. */
+ char *merged = uri_merge (opt.base_href, url_text);
+ xfree (url_text);
+ url_text = merged;
+ }
+
+ new_url = rewrite_shorthand_url (url_text);
+ if (new_url)
+ {
+ xfree (url_text);
+ url_text = new_url;
+ }
+
+ url = url_parse (url_text, &up_error_code, NULL, false);
+ if (!url)
+ {
+ char *error = url_error (url_text, up_error_code);
+ logprintf (LOG_NOTQUIET, _("%s: Invalid URL %s: %s\n"),
+ file, url_text, error);
+ xfree (url_text);
+ xfree (error);
+ inform_exit_status (URLERROR);
+ continue;
+ }
+ xfree (url_text);
+
+ entry = xnew0 (struct urlpos);
+ entry->url = url;
+
+ if (!head)
+ head = entry;
+ else
+ tail->next = entry;
+ tail = entry;
+ }
+ wget_read_file_free (fm);
+ return head;
+}
+
+#if defined DEBUG_MALLOC || defined TESTING
+void
+cleanup_html_url (void)
+{
+ /* Destroy the hash tables. The hash table keys and values are not
+ allocated by this code, so we don't need to free them here. */
+ if (interesting_tags)
+ hash_table_destroy (interesting_tags);
+ if (interesting_attributes)
+ hash_table_destroy (interesting_attributes);
+}
+#endif
diff --git a/src/html-url.h b/src/html-url.h
new file mode 100644
index 0000000..abc7edd
--- /dev/null
+++ b/src/html-url.h
@@ -0,0 +1,58 @@
+/* Declarations for html-url.c.
+ Copyright (C) 1995-1997, 2009-2011, 2015, 2018-2020 Free Software
+ Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at
+your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef HTML_URL_H
+#define HTML_URL_H
+
+#include <stdbool.h>
+#include "utils.h"
+#include "convert.h"
+#include "iri.h"
+
+struct map_context {
+ char *text; /* HTML text. */
+ char *base; /* Base URI of the document, possibly
+ changed through <base href=...>. */
+ const char *parent_base; /* Base of the current document. */
+ const char *document_file; /* File name of this document. */
+ bool nofollow; /* whether NOFOLLOW was specified in a
+ <meta name=robots> tag. */
+
+ struct urlpos *head; /* List of URLs that is being built. */
+};
+
+struct urlpos *get_urls_file (const char *);
+struct urlpos *get_urls_html (const char *, const char *, bool *, struct iri *);
+struct urlpos *get_urls_html_fm (const char *, const struct file_memory *, const char *, bool *, struct iri *);
+struct urlpos *append_url (const char *, int, int, struct map_context *);
+void free_urlpos (struct urlpos *);
+void cleanup_html_url (void);
+
+#endif /* HTML_URL_H */
diff --git a/src/http-ntlm.c b/src/http-ntlm.c
new file mode 100644
index 0000000..ceba3b8
--- /dev/null
+++ b/src/http-ntlm.c
@@ -0,0 +1,618 @@
+/* NTLM code.
+ Copyright (C) 2005-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+ Contributed by Daniel Stenberg.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+/* NTLM details:
+
+ http://davenport.sourceforge.net/ntlm.html
+ http://www.innovation.ch/java/ntlm.html
+
+*/
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "utils.h"
+#include "http-ntlm.h"
+
+#ifdef HAVE_NETTLE
+# include <nettle/md4.h>
+# include <nettle/des.h>
+#else
+# include <openssl/des.h>
+# include <openssl/md4.h>
+# include <openssl/opensslv.h>
+
+# if OPENSSL_VERSION_NUMBER < 0x00907001L
+# define DES_key_schedule des_key_schedule
+# define DES_cblock des_cblock
+# define DES_set_odd_parity des_set_odd_parity
+# define DES_set_key des_set_key
+# define DES_ecb_encrypt des_ecb_encrypt
+
+/* This is how things were done in the old days */
+# define DESKEY(x) x
+# define DESKEYARG(x) x
+# else
+/* Modern version */
+# define DESKEYARG(x) *x
+# define DESKEY(x) &x
+# endif
+
+#endif
+
+/* Define this to make the type-3 message include the NT response message */
+#define USE_NTRESPONSES 1
+
+
+/* Flag bits definitions available at on
+ http://davenport.sourceforge.net/ntlm.html */
+
+#define NTLMFLAG_NEGOTIATE_OEM (1<<1)
+#define NTLMFLAG_NEGOTIATE_NTLM_KEY (1<<9)
+
+/*
+ (*) = A "security buffer" is a triplet consisting of two shorts and one
+ long:
+
+ 1. a 'short' containing the length of the buffer in bytes
+ 2. a 'short' containing the allocated space for the buffer in bytes
+ 3. a 'long' containing the offset to the start of the buffer from the
+ beginning of the NTLM message, in bytes.
+*/
+
+/* return true on success, false otherwise */
+bool
+ntlm_input (struct ntlmdata *ntlm, const char *header)
+{
+ if (0 != strncmp (header, "NTLM", 4))
+ return false;
+
+ header += 4;
+ while (*header && c_isspace(*header))
+ header++;
+
+ if (*header)
+ {
+ /* We got a type-2 message here:
+
+ Index Description Content
+ 0 NTLMSSP Signature Null-terminated ASCII "NTLMSSP"
+ (0x4e544c4d53535000)
+ 8 NTLM Message Type long (0x02000000)
+ 12 Target Name security buffer(*)
+ 20 Flags long
+ 24 Challenge 8 bytes
+ (32) Context (optional) 8 bytes (two consecutive longs)
+ (40) Target Information (optional) security buffer(*)
+ 32 (48) start of data block
+ */
+ ssize_t size;
+ char buffer[48]; // decode 48 bytes needs ((48 + 2) / 3) * 4 + 1 bytes
+
+ DEBUGP (("Received a type-2 NTLM message.\n"));
+
+ size = wget_base64_decode (header, buffer, sizeof (buffer));
+ if (size < 0)
+ return false; /* malformed base64 from server */
+
+ ntlm->state = NTLMSTATE_TYPE2; /* we got a type-2 */
+
+ if ((size_t) size >= sizeof (buffer))
+ /* the nonce of interest is index [24 .. 31], 8 bytes */
+ memcpy (ntlm->nonce, &buffer[24], 8);
+
+ /* at index decimal 20, there's a 32bit NTLM flag field */
+ }
+ else
+ {
+ if (ntlm->state == NTLMSTATE_LAST)
+ {
+ DEBUGP (("NTLM auth restarted.\n"));
+ /* no return, continue */
+ }
+ else if (ntlm->state == NTLMSTATE_TYPE3)
+ {
+ DEBUGP (("NTLM handshake rejected.\n"));
+ ntlm->state = NTLMSTATE_NONE;
+ return false;
+ }
+ else if (ntlm->state >= NTLMSTATE_TYPE1)
+ {
+ DEBUGP (("Unexpected empty NTLM message.\n"));
+ return false; /* this is an error */
+ }
+
+ DEBUGP (("Empty NTLM message, (re)starting transaction.\n"));
+ ntlm->state = NTLMSTATE_TYPE1; /* we should sent away a type-1 */
+ }
+
+ return true;
+}
+
+/*
+ * Turns a 56 bit key into the 64 bit, odd parity key and sets the key. The
+ * key schedule ks is also set.
+ */
+#ifdef HAVE_NETTLE
+static void
+setup_des_key(unsigned char *key_56,
+ struct des_ctx *des)
+{
+ unsigned char key[8];
+
+ key[0] = key_56[0];
+ key[1] = ((key_56[0] << 7) & 0xFF) | (key_56[1] >> 1);
+ key[2] = ((key_56[1] << 6) & 0xFF) | (key_56[2] >> 2);
+ key[3] = ((key_56[2] << 5) & 0xFF) | (key_56[3] >> 3);
+ key[4] = ((key_56[3] << 4) & 0xFF) | (key_56[4] >> 4);
+ key[5] = ((key_56[4] << 3) & 0xFF) | (key_56[5] >> 5);
+ key[6] = ((key_56[5] << 2) & 0xFF) | (key_56[6] >> 6);
+ key[7] = (key_56[6] << 1) & 0xFF;
+
+ nettle_des_set_key(des, key);
+}
+#else
+static void
+setup_des_key(unsigned char *key_56,
+ DES_key_schedule DESKEYARG(ks))
+{
+ DES_cblock key;
+
+ key[0] = key_56[0];
+ key[1] = ((key_56[0] << 7) & 0xFF) | (key_56[1] >> 1);
+ key[2] = ((key_56[1] << 6) & 0xFF) | (key_56[2] >> 2);
+ key[3] = ((key_56[2] << 5) & 0xFF) | (key_56[3] >> 3);
+ key[4] = ((key_56[3] << 4) & 0xFF) | (key_56[4] >> 4);
+ key[5] = ((key_56[4] << 3) & 0xFF) | (key_56[5] >> 5);
+ key[6] = ((key_56[5] << 2) & 0xFF) | (key_56[6] >> 6);
+ key[7] = (key_56[6] << 1) & 0xFF;
+
+ DES_set_odd_parity(&key);
+ DES_set_key(&key, ks);
+}
+#endif
+
+ /*
+ * takes a 21 byte array and treats it as 3 56-bit DES keys. The
+ * 8 byte plaintext is encrypted with each key and the resulting 24
+ * bytes are stored in the results array.
+ */
+static void
+calc_resp(unsigned char *keys, unsigned char *plaintext, unsigned char *results)
+{
+#ifdef HAVE_NETTLE
+ struct des_ctx des;
+
+ setup_des_key(keys, &des);
+ nettle_des_encrypt(&des, 8, results, plaintext);
+
+ setup_des_key(keys + 7, &des);
+ nettle_des_encrypt(&des, 8, results + 8, plaintext);
+
+ setup_des_key(keys + 14, &des);
+ nettle_des_encrypt(&des, 8, results + 16, plaintext);
+#else
+ DES_key_schedule ks;
+
+ setup_des_key(keys, DESKEY(ks));
+ DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) results,
+ DESKEY(ks), DES_ENCRYPT);
+
+ setup_des_key(keys+7, DESKEY(ks));
+ DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) (results+8),
+ DESKEY(ks), DES_ENCRYPT);
+
+ setup_des_key(keys+14, DESKEY(ks));
+ DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) (results+16),
+ DESKEY(ks), DES_ENCRYPT);
+#endif
+}
+
+/*
+ * Set up lanmanager and nt hashed passwords
+ */
+static void
+mkhash(const char *password,
+ unsigned char *nonce, /* 8 bytes */
+ unsigned char *lmresp /* must fit 0x18 bytes */
+#ifdef USE_NTRESPONSES
+ , unsigned char *ntresp /* must fit 0x18 bytes */
+#endif
+ )
+{
+ unsigned char lmbuffer[21];
+#ifdef USE_NTRESPONSES
+ unsigned char ntbuffer[21];
+#endif
+ unsigned char pw[14];
+ static const unsigned char magic[] = {
+ 0x4B, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25
+ };
+ size_t i, len = strlen(password);
+
+ /* make it fit at least 14 bytes */
+
+ if (len > sizeof (pw))
+ len = sizeof (pw);
+
+ for (i = 0; i < len; i++)
+ pw[i] = (unsigned char) c_toupper (password[i]);
+
+ for (; i < sizeof (pw); i++)
+ pw[i] = 0;
+
+ {
+ /* create LanManager hashed password */
+#ifdef HAVE_NETTLE
+ struct des_ctx des;
+
+ setup_des_key(pw, &des);
+ nettle_des_encrypt(&des, 8, lmbuffer, magic);
+
+ setup_des_key(pw + 7, &des);
+ nettle_des_encrypt(&des, 8, lmbuffer + 8, magic);
+#else
+ DES_key_schedule ks;
+
+ setup_des_key(pw, DESKEY (ks));
+ DES_ecb_encrypt((DES_cblock *) magic, (DES_cblock *) lmbuffer,
+ DESKEY (ks), DES_ENCRYPT);
+
+ setup_des_key(pw+7, DESKEY (ks));
+ DES_ecb_encrypt((DES_cblock *) magic, (DES_cblock *) (lmbuffer + 8),
+ DESKEY (ks), DES_ENCRYPT);
+#endif
+
+ memset(lmbuffer + 16, 0, 5);
+ }
+ /* create LM responses */
+ calc_resp(lmbuffer, nonce, lmresp);
+
+#ifdef USE_NTRESPONSES
+ {
+#ifdef HAVE_NETTLE
+ struct md4_ctx MD4;
+#else
+ MD4_CTX MD4;
+#endif
+
+ unsigned char pw4[64];
+
+ len = strlen (password);
+
+ if (len > sizeof (pw4) / 2)
+ len = sizeof (pw4) / 2;
+
+ for (i = 0; i < len; i++) {
+ pw4[2 * i] = (unsigned char) password[i];
+ pw4[2 * i + 1] = 0;
+ }
+
+#ifdef HAVE_NETTLE
+ nettle_md4_init(&MD4);
+ nettle_md4_update(&MD4, (unsigned) (2 * len), pw4);
+ nettle_md4_digest(&MD4, MD4_DIGEST_SIZE, ntbuffer);
+#else
+ /* create NT hashed password */
+ MD4_Init(&MD4);
+ MD4_Update(&MD4, pw4, 2 * len);
+ MD4_Final(ntbuffer, &MD4);
+#endif
+
+ memset(ntbuffer + 16, 0, 5);
+ }
+
+ calc_resp(ntbuffer, nonce, ntresp);
+#endif
+}
+
+#define SHORTPAIR(x) (char) ((x) & 0xff), (char) ((x) >> 8)
+#define LONGQUARTET(x) ((x) & 0xff), (((x) >> 8)&0xff), \
+ (((x) >>16)&0xff), ((x)>>24)
+
+/* this is for creating ntlm header output */
+char *
+ntlm_output (struct ntlmdata *ntlm, const char *user, const char *passwd,
+ bool *ready)
+{
+ const char *domain = ""; /* empty */
+ const char *host = ""; /* empty */
+ size_t domlen = strlen(domain);
+ size_t hostlen = strlen(host);
+ size_t hostoff; /* host name offset */
+ size_t domoff; /* domain name offset */
+ size_t size;
+ char ntlmbuf[256]; /* enough, unless the host/domain is very long */
+
+ /* point to the address of the pointer that holds the string to sent to the
+ server, which is for a plain host or for a HTTP proxy */
+ char *output = NULL;
+
+ *ready = false;
+
+ /* not set means empty */
+ if(!user)
+ user="";
+
+ if(!passwd)
+ passwd="";
+
+ switch(ntlm->state) {
+ case NTLMSTATE_TYPE1:
+ case NTLMSTATE_NONE:
+ case NTLMSTATE_LAST:
+ hostoff = 32;
+ domoff = hostoff + hostlen;
+
+ DEBUGP (("Creating a type-1 NTLM message.\n"));
+
+ /* Create and send a type-1 message:
+
+ Index Description Content
+ 0 NTLMSSP Signature Null-terminated ASCII "NTLMSSP"
+ (0x4e544c4d53535000)
+ 8 NTLM Message Type long (0x01000000)
+ 12 Flags long
+ 16 Supplied Domain security buffer(*)
+ 24 Supplied Workstation security buffer(*)
+ 32 start of data block
+
+ */
+
+ snprintf (ntlmbuf, sizeof(ntlmbuf), "NTLMSSP%c"
+ "\x01%c%c%c" /* 32-bit type = 1 */
+ "%c%c%c%c" /* 32-bit NTLM flag field */
+ "%c%c" /* domain length */
+ "%c%c" /* domain allocated space */
+ "%c%c" /* domain name offset */
+ "%c%c" /* 2 zeroes */
+ "%c%c" /* host length */
+ "%c%c" /* host allocated space */
+ "%c%c" /* host name offset */
+ "%c%c" /* 2 zeroes */
+ "%s" /* host name */
+ "%s", /* domain string */
+ 0, /* trailing zero */
+ 0,0,0, /* part of type-1 long */
+
+ LONGQUARTET(
+ NTLMFLAG_NEGOTIATE_OEM| /* 2 */
+ NTLMFLAG_NEGOTIATE_NTLM_KEY /* 200 */
+ /* equals 0x0202 */
+ ),
+ SHORTPAIR(domlen),
+ SHORTPAIR(domlen),
+ SHORTPAIR(domoff),
+ 0,0,
+ SHORTPAIR(hostlen),
+ SHORTPAIR(hostlen),
+ SHORTPAIR(hostoff),
+ 0,0,
+ host, domain);
+
+ /* initial packet length */
+ size = 32 + hostlen + domlen;
+
+ output = xmalloc(5 + BASE64_LENGTH (size) + 1);
+ memcpy(output, "NTLM ", 5);
+ wget_base64_encode (ntlmbuf, size, output + 5);
+
+ break;
+
+ case NTLMSTATE_TYPE2:
+ /* We received the type-2 already, create a type-3 message:
+
+ Index Description Content
+ 0 NTLMSSP Signature Null-terminated ASCII "NTLMSSP"
+ (0x4e544c4d53535000)
+ 8 NTLM Message Type long (0x03000000)
+ 12 LM/LMv2 Response security buffer(*)
+ 20 NTLM/NTLMv2 Response security buffer(*)
+ 28 Domain Name security buffer(*)
+ 36 User Name security buffer(*)
+ 44 Workstation Name security buffer(*)
+ (52) Session Key (optional) security buffer(*)
+ (60) Flags (optional) long
+ 52 (64) start of data block
+
+ */
+
+ {
+ size_t lmrespoff;
+ size_t ntrespoff;
+ size_t useroff;
+ unsigned char lmresp[0x18]; /* fixed-size */
+#ifdef USE_NTRESPONSES
+ unsigned char ntresp[0x18]; /* fixed-size */
+#endif
+ const char *usr;
+ size_t userlen;
+
+ DEBUGP (("Creating a type-3 NTLM message.\n"));
+
+ usr = strchr(user, '\\');
+ if(!usr)
+ usr = strchr(user, '/');
+
+ if (usr) {
+ domain = user;
+ domlen = (size_t) (usr - domain);
+ usr++;
+ }
+ else
+ usr = user;
+ userlen = strlen(usr);
+
+ mkhash(passwd, &ntlm->nonce[0], lmresp
+#ifdef USE_NTRESPONSES
+ , ntresp
+#endif
+ );
+
+ domoff = 64; /* always */
+ useroff = domoff + domlen;
+ hostoff = useroff + userlen;
+ lmrespoff = hostoff + hostlen;
+ ntrespoff = lmrespoff + 0x18;
+
+ /* Create the big type-3 message binary blob */
+
+ snprintf (ntlmbuf, sizeof (ntlmbuf),
+ "NTLMSSP%c"
+ "\x03%c%c%c" /* type-3, 32 bits */
+
+ "%c%c%c%c" /* LanManager length + allocated space */
+ "%c%c" /* LanManager offset */
+ "%c%c" /* 2 zeroes */
+
+ "%c%c" /* NT-response length */
+ "%c%c" /* NT-response allocated space */
+ "%c%c" /* NT-response offset */
+ "%c%c" /* 2 zeroes */
+
+ "%c%c" /* domain length */
+ "%c%c" /* domain allocated space */
+ "%c%c" /* domain name offset */
+ "%c%c" /* 2 zeroes */
+
+ "%c%c" /* user length */
+ "%c%c" /* user allocated space */
+ "%c%c" /* user offset */
+ "%c%c" /* 2 zeroes */
+
+ "%c%c" /* host length */
+ "%c%c" /* host allocated space */
+ "%c%c" /* host offset */
+ "%c%c%c%c%c%c" /* 6 zeroes */
+
+ "\xff\xff" /* message length */
+ "%c%c" /* 2 zeroes */
+
+ "\x01\x82" /* flags */
+ "%c%c" /* 2 zeroes */
+
+ /* domain string */
+ /* user string */
+ /* host string */
+ /* LanManager response */
+ /* NT response */
+ ,
+ 0, /* zero termination */
+ 0, 0, 0, /* type-3 long, the 24 upper bits */
+
+ SHORTPAIR (0x18), /* LanManager response length, twice */
+ SHORTPAIR (0x18),
+ SHORTPAIR (lmrespoff),
+ 0x0, 0x0,
+
+#ifdef USE_NTRESPONSES
+ SHORTPAIR (0x18), /* NT-response length, twice */
+ SHORTPAIR (0x18),
+#else
+ 0x0, 0x0,
+ 0x0, 0x0,
+#endif
+ SHORTPAIR (ntrespoff),
+ 0x0, 0x0,
+
+ SHORTPAIR (domlen),
+ SHORTPAIR (domlen),
+ SHORTPAIR (domoff),
+ 0x0, 0x0,
+
+ SHORTPAIR (userlen),
+ SHORTPAIR (userlen),
+ SHORTPAIR (useroff),
+ 0x0, 0x0,
+
+ SHORTPAIR (hostlen),
+ SHORTPAIR (hostlen),
+ SHORTPAIR (hostoff),
+ 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+
+ 0x0, 0x0,
+
+ 0x0, 0x0);
+
+ /* size is now 64 */
+ size=64;
+ ntlmbuf[62]=ntlmbuf[63]=0;
+
+ /* Make sure that the user and domain strings fit in the target buffer
+ before we copy them there. */
+ if((size + userlen + domlen) >= sizeof(ntlmbuf))
+ return NULL;
+
+ memcpy(&ntlmbuf[size], domain, domlen);
+ size += domlen;
+
+ memcpy(&ntlmbuf[size], usr, userlen);
+ size += userlen;
+
+ /* we append the binary hashes to the end of the blob */
+ if(size < (sizeof(ntlmbuf) - 0x18)) {
+ memcpy(&ntlmbuf[size], lmresp, 0x18);
+ size += 0x18;
+ }
+
+#ifdef USE_NTRESPONSES
+ if(size < (sizeof(ntlmbuf) - 0x18)) {
+ memcpy(&ntlmbuf[size], ntresp, 0x18);
+ size += 0x18;
+ }
+#endif
+
+ ntlmbuf[56] = (char) (size & 0xff);
+ ntlmbuf[57] = (char) (size >> 8);
+
+ /* convert the binary blob into base64 */
+ output = xmalloc(5 + BASE64_LENGTH (size) + 1);
+ memcpy(output, "NTLM ", 5);
+ wget_base64_encode (ntlmbuf, size, output + 5);
+
+ ntlm->state = NTLMSTATE_TYPE3; /* we sent a type-3 */
+ *ready = true;
+ }
+ break;
+
+ case NTLMSTATE_TYPE3:
+ /* connection is already authenticated,
+ * don't send a header in future requests */
+ *ready = true;
+ output = NULL;
+ break;
+ }
+
+ return output;
+}
diff --git a/src/http-ntlm.h b/src/http-ntlm.h
new file mode 100644
index 0000000..de0c9ce
--- /dev/null
+++ b/src/http-ntlm.h
@@ -0,0 +1,53 @@
+#ifndef __HTTP_NTLM_H
+#define __HTTP_NTLM_H
+/* Declarations for http_ntlm.c
+ Copyright (C) 1995-1997, 2000, 2007-2011, 2015, 2018-2020 Free
+ Software Foundation, Inc.
+ Contributed by Daniel Stenberg.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+typedef enum {
+ NTLMSTATE_NONE,
+ NTLMSTATE_TYPE1,
+ NTLMSTATE_TYPE2,
+ NTLMSTATE_TYPE3,
+ NTLMSTATE_LAST
+} wgetntlm;
+
+/* Struct used for NTLM challenge-response authentication */
+struct ntlmdata {
+ wgetntlm state;
+ unsigned char nonce[8];
+};
+
+/* this is for ntlm header input */
+bool ntlm_input (struct ntlmdata *, const char *);
+
+/* this is for creating ntlm header output */
+char *ntlm_output (struct ntlmdata *, const char *, const char *, bool *);
+#endif
diff --git a/src/http.c b/src/http.c
new file mode 100644
index 0000000..26e10d2
--- /dev/null
+++ b/src/http.c
@@ -0,0 +1,5495 @@
+/* HTTP support.
+ Copyright (C) 1996-2012, 2014-2015, 2018-2020 Free Software
+ Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <assert.h>
+#include <errno.h>
+#include <time.h>
+#include <locale.h>
+#include <fcntl.h>
+
+#include "hash.h"
+#include "http.h"
+#include "hsts.h"
+#include "utils.h"
+#include "url.h"
+#include "host.h"
+#include "retr.h"
+#include "connect.h"
+#include "netrc.h"
+#ifdef HAVE_SSL
+# include "ssl.h"
+#endif
+#ifdef ENABLE_NTLM
+# include "http-ntlm.h"
+#endif
+#include "cookies.h"
+#include "md5.h"
+#include "convert.h"
+#include "spider.h"
+#include "warc.h"
+#include "c-strcase.h"
+#include "version.h"
+#include "xstrndup.h"
+#ifdef HAVE_METALINK
+# include "metalink.h"
+#endif
+#ifdef ENABLE_XATTR
+#include "xattr.h"
+#endif
+
+#ifdef TESTING
+#include "../tests/unit-tests.h"
+#endif
+
+#ifdef __VMS
+# include "vms.h"
+#endif /* def __VMS */
+
+
+/* Forward decls. */
+struct http_stat;
+static char *create_authorization_line (const char *, const char *,
+ const char *, const char *,
+ const char *, bool *, uerr_t *);
+static char *basic_authentication_encode (const char *, const char *);
+static bool known_authentication_scheme_p (const char *, const char *);
+static void ensure_extension (struct http_stat *, const char *, int *);
+static void load_cookies (void);
+
+static bool cookies_loaded_p;
+static struct cookie_jar *wget_cookie_jar;
+
+#define TEXTHTML_S "text/html"
+#define TEXTXHTML_S "application/xhtml+xml"
+#define TEXTCSS_S "text/css"
+
+/* Some status code validation macros: */
+#define H_10X(x) (((x) >= 100) && ((x) < 200))
+#define H_20X(x) (((x) >= 200) && ((x) < 300))
+#define H_PARTIAL(x) ((x) == HTTP_STATUS_PARTIAL_CONTENTS)
+#define H_REDIRECTED(x) ((x) == HTTP_STATUS_MOVED_PERMANENTLY \
+ || (x) == HTTP_STATUS_MOVED_TEMPORARILY \
+ || (x) == HTTP_STATUS_SEE_OTHER \
+ || (x) == HTTP_STATUS_TEMPORARY_REDIRECT \
+ || (x) == HTTP_STATUS_PERMANENT_REDIRECT)
+
+/* HTTP/1.0 status codes from RFC1945, provided for reference. */
+/* Successful 2xx. */
+#define HTTP_STATUS_OK 200
+#define HTTP_STATUS_CREATED 201
+#define HTTP_STATUS_ACCEPTED 202
+#define HTTP_STATUS_NO_CONTENT 204
+#define HTTP_STATUS_PARTIAL_CONTENTS 206
+
+/* Redirection 3xx. */
+#define HTTP_STATUS_MULTIPLE_CHOICES 300
+#define HTTP_STATUS_MOVED_PERMANENTLY 301
+#define HTTP_STATUS_MOVED_TEMPORARILY 302
+#define HTTP_STATUS_SEE_OTHER 303 /* from HTTP/1.1 */
+#define HTTP_STATUS_NOT_MODIFIED 304
+#define HTTP_STATUS_TEMPORARY_REDIRECT 307 /* from HTTP/1.1 */
+#define HTTP_STATUS_PERMANENT_REDIRECT 308 /* from HTTP/1.1 */
+
+/* Client error 4xx. */
+#define HTTP_STATUS_BAD_REQUEST 400
+#define HTTP_STATUS_UNAUTHORIZED 401
+#define HTTP_STATUS_FORBIDDEN 403
+#define HTTP_STATUS_NOT_FOUND 404
+#define HTTP_STATUS_RANGE_NOT_SATISFIABLE 416
+
+/* Server errors 5xx. */
+#define HTTP_STATUS_INTERNAL 500
+#define HTTP_STATUS_NOT_IMPLEMENTED 501
+#define HTTP_STATUS_BAD_GATEWAY 502
+#define HTTP_STATUS_UNAVAILABLE 503
+#define HTTP_STATUS_GATEWAY_TIMEOUT 504
+
+enum rp {
+ rel_none, rel_name, rel_value, rel_both
+};
+
+struct request {
+ const char *method;
+ char *arg;
+
+ struct request_header {
+ char *name, *value;
+ enum rp release_policy;
+ } *headers;
+ int hcount, hcapacity;
+};
+
+
+/* Create a new, empty request. Set the request's method and its
+ arguments. METHOD should be a literal string (or it should outlive
+ the request) because it will not be freed. ARG will be freed by
+ request_free. */
+
+static struct request *
+request_new (const char *method, char *arg)
+{
+ struct request *req = xnew0 (struct request);
+ req->hcapacity = 8;
+ req->headers = xnew_array (struct request_header, req->hcapacity);
+ req->method = method;
+ req->arg = arg;
+ return req;
+}
+
+/* Return the method string passed with the last call to
+ request_set_method. */
+
+static const char *
+request_method (const struct request *req)
+{
+ return req->method;
+}
+
+/* Free one header according to the release policy specified with
+ request_set_header. */
+
+static void
+release_header (struct request_header *hdr)
+{
+ switch (hdr->release_policy)
+ {
+ case rel_none:
+ break;
+ case rel_name:
+ xfree (hdr->name);
+ break;
+ case rel_value:
+ xfree (hdr->value);
+ break;
+ case rel_both:
+ xfree (hdr->name);
+ xfree (hdr->value);
+ break;
+ }
+}
+
+/* Set the request named NAME to VALUE. Specifically, this means that
+ a "NAME: VALUE\r\n" header line will be used in the request. If a
+ header with the same name previously existed in the request, its
+ value will be replaced by this one. A NULL value means do nothing.
+
+ RELEASE_POLICY determines whether NAME and VALUE should be released
+ (freed) with request_free. Allowed values are:
+
+ - rel_none - don't free NAME or VALUE
+ - rel_name - free NAME when done
+ - rel_value - free VALUE when done
+ - rel_both - free both NAME and VALUE when done
+
+ Setting release policy is useful when arguments come from different
+ sources. For example:
+
+ // Don't free literal strings!
+ request_set_header (req, "Pragma", "no-cache", rel_none);
+
+ // Don't free a global variable, we'll need it later.
+ request_set_header (req, "Referer", opt.referer, rel_none);
+
+ // Value freshly allocated, free it when done.
+ request_set_header (req, "Range",
+ aprintf ("bytes=%s-", number_to_static_string (hs->restval)),
+ rel_value);
+ */
+
+static void
+request_set_header (struct request *req, const char *name, const char *value,
+ enum rp release_policy)
+{
+ struct request_header *hdr;
+ int i;
+
+ if (!value)
+ {
+ /* A NULL value is a no-op; if freeing the name is requested,
+ free it now to avoid leaks. */
+ if (release_policy == rel_name || release_policy == rel_both)
+ xfree (name);
+ return;
+ }
+
+ for (i = 0; i < req->hcount; i++)
+ {
+ hdr = &req->headers[i];
+ if (0 == c_strcasecmp (name, hdr->name))
+ {
+ /* Replace existing header. */
+ release_header (hdr);
+ hdr->name = (void *)name;
+ hdr->value = (void *)value;
+ hdr->release_policy = release_policy;
+ return;
+ }
+ }
+
+ /* Install new header. */
+
+ if (req->hcount >= req->hcapacity)
+ {
+ req->hcapacity <<= 1;
+ req->headers = xrealloc (req->headers, req->hcapacity * sizeof (*hdr));
+ }
+ hdr = &req->headers[req->hcount++];
+ hdr->name = (void *)name;
+ hdr->value = (void *)value;
+ hdr->release_policy = release_policy;
+}
+
+/* Like request_set_header, but sets the whole header line, as
+ provided by the user using the `--header' option. For example,
+ request_set_user_header (req, "Foo: bar") works just like
+ request_set_header (req, "Foo", "bar"). */
+
+static void
+request_set_user_header (struct request *req, const char *header)
+{
+ const char *name, *p;
+
+ if (!(p = strchr (header, ':')))
+ return;
+
+ name = xstrndup(header, p - header);
+
+ ++p;
+ while (c_isspace (*p))
+ ++p;
+
+ request_set_header (req, name, p, rel_name);
+}
+
+/* Remove the header with specified name from REQ. Returns true if
+ the header was actually removed, false otherwise. */
+
+static bool
+request_remove_header (struct request *req, const char *name)
+{
+ int i;
+ for (i = 0; i < req->hcount; i++)
+ {
+ struct request_header *hdr = &req->headers[i];
+ if (0 == c_strcasecmp (name, hdr->name))
+ {
+ release_header (hdr);
+ /* Move the remaining headers by one. */
+ if (i < req->hcount - 1)
+ memmove (hdr, hdr + 1, (req->hcount - i - 1) * sizeof (*hdr));
+ --req->hcount;
+ return true;
+ }
+ }
+ return false;
+}
+
+#define APPEND(p, str) do { \
+ int A_len = strlen (str); \
+ memcpy (p, str, A_len); \
+ p += A_len; \
+} while (0)
+
+/* Construct the request and write it to FD using fd_write.
+ If warc_tmp is set to a file pointer, the request string will
+ also be written to that file. */
+
+static int
+request_send (const struct request *req, int fd, FILE *warc_tmp)
+{
+ char *request_string, *p;
+ int i, size, write_error;
+
+ /* Count the request size. */
+ size = 0;
+
+ /* METHOD " " ARG " " "HTTP/1.0" "\r\n" */
+ size += strlen (req->method) + 1 + strlen (req->arg) + 1 + 8 + 2;
+
+ for (i = 0; i < req->hcount; i++)
+ {
+ struct request_header *hdr = &req->headers[i];
+ /* NAME ": " VALUE "\r\n" */
+ size += strlen (hdr->name) + 2 + strlen (hdr->value) + 2;
+ }
+
+ /* "\r\n\0" */
+ size += 3;
+
+ p = request_string = xmalloc (size);
+
+ /* Generate the request. */
+
+ APPEND (p, req->method); *p++ = ' ';
+ APPEND (p, req->arg); *p++ = ' ';
+ memcpy (p, "HTTP/1.1\r\n", 10); p += 10;
+
+ for (i = 0; i < req->hcount; i++)
+ {
+ struct request_header *hdr = &req->headers[i];
+ APPEND (p, hdr->name);
+ *p++ = ':', *p++ = ' ';
+ APPEND (p, hdr->value);
+ *p++ = '\r', *p++ = '\n';
+ }
+
+ *p++ = '\r', *p++ = '\n', *p++ = '\0';
+ assert (p - request_string == size);
+
+#undef APPEND
+
+ DEBUGP (("\n---request begin---\n%s---request end---\n", request_string));
+
+ /* Send the request to the server. */
+
+ write_error = fd_write (fd, request_string, size - 1, -1);
+ if (write_error < 0)
+ logprintf (LOG_VERBOSE, _("Failed writing HTTP request: %s.\n"),
+ fd_errstr (fd));
+ else if (warc_tmp != NULL)
+ {
+ /* Write a copy of the data to the WARC record. */
+ int warc_tmp_written = fwrite (request_string, 1, size - 1, warc_tmp);
+ if (warc_tmp_written != size - 1)
+ write_error = -2;
+ }
+ xfree (request_string);
+ return write_error;
+}
+
+/* Release the resources used by REQ.
+ It is safe to call it with a valid pointer to a NULL pointer.
+ It is not safe to call it with an invalid or NULL pointer. */
+
+static void
+request_free (struct request **req_ref)
+{
+ int i;
+ struct request *req = *req_ref;
+
+ if (!req)
+ return;
+
+ xfree (req->arg);
+ for (i = 0; i < req->hcount; i++)
+ release_header (&req->headers[i]);
+ xfree (req->headers);
+ xfree (req);
+ *req_ref = NULL;
+}
+
+static struct hash_table *basic_authed_hosts;
+
+/* Find out if this host has issued a Basic challenge yet; if so, give
+ * it the username, password. A temporary measure until we can get
+ * proper authentication in place. */
+
+static bool
+maybe_send_basic_creds (const char *hostname, const char *user,
+ const char *passwd, struct request *req)
+{
+ bool do_challenge = false;
+
+ if (opt.auth_without_challenge)
+ {
+ DEBUGP (("Auth-without-challenge set, sending Basic credentials.\n"));
+ do_challenge = true;
+ }
+ else if (basic_authed_hosts
+ && hash_table_contains (basic_authed_hosts, hostname))
+ {
+ DEBUGP (("Found %s in basic_authed_hosts.\n", quote (hostname)));
+ do_challenge = true;
+ }
+ else
+ {
+ DEBUGP (("Host %s has not issued a general basic challenge.\n",
+ quote (hostname)));
+ }
+ if (do_challenge)
+ {
+ request_set_header (req, "Authorization",
+ basic_authentication_encode (user, passwd),
+ rel_value);
+ }
+ return do_challenge;
+}
+
+static void
+register_basic_auth_host (const char *hostname)
+{
+ if (!basic_authed_hosts)
+ {
+ basic_authed_hosts = make_nocase_string_hash_table (1);
+ }
+ if (!hash_table_contains (basic_authed_hosts, hostname))
+ {
+ hash_table_put (basic_authed_hosts, xstrdup (hostname), NULL);
+ DEBUGP (("Inserted %s into basic_authed_hosts\n", quote (hostname)));
+ }
+}
+
+/* Send the contents of FILE_NAME to SOCK. Make sure that exactly
+ PROMISED_SIZE bytes are sent over the wire -- if the file is
+ longer, read only that much; if the file is shorter, report an error.
+ If warc_tmp is set to a file pointer, the post data will
+ also be written to that file. */
+
+static int
+body_file_send (int sock, const char *file_name, wgint promised_size, FILE *warc_tmp)
+{
+ static char chunk[8192];
+ wgint written = 0;
+ int write_error;
+ FILE *fp;
+
+ DEBUGP (("[writing BODY file %s ... ", file_name));
+
+ fp = fopen (file_name, "rb");
+ if (!fp)
+ return -1;
+ while (!feof (fp) && written < promised_size)
+ {
+ int towrite;
+ int length = fread (chunk, 1, sizeof (chunk), fp);
+ if (length == 0)
+ break;
+ towrite = MIN (promised_size - written, length);
+ write_error = fd_write (sock, chunk, towrite, -1);
+ if (write_error < 0)
+ {
+ fclose (fp);
+ return -1;
+ }
+ if (warc_tmp != NULL)
+ {
+ /* Write a copy of the data to the WARC record. */
+ int warc_tmp_written = fwrite (chunk, 1, towrite, warc_tmp);
+ if (warc_tmp_written != towrite)
+ {
+ fclose (fp);
+ return -2;
+ }
+ }
+ written += towrite;
+ }
+ fclose (fp);
+
+ /* If we've written less than was promised, report a (probably
+ nonsensical) error rather than break the promise. */
+ if (written < promised_size)
+ {
+ errno = EINVAL;
+ return -1;
+ }
+
+ assert (written == promised_size);
+ DEBUGP (("done]\n"));
+ return 0;
+}
+
+/* Determine whether [START, PEEKED + PEEKLEN) contains an empty line.
+ If so, return the pointer to the position after the line, otherwise
+ return NULL. This is used as callback to fd_read_hunk. The data
+ between START and PEEKED has been read and cannot be "unread"; the
+ data after PEEKED has only been peeked. */
+
+static const char *
+response_head_terminator (const char *start, const char *peeked, int peeklen)
+{
+ const char *p, *end;
+
+ /* If at first peek, verify whether HUNK starts with "HTTP". If
+ not, this is a HTTP/0.9 request and we must bail out without
+ reading anything. */
+ if (start == peeked && 0 != memcmp (start, "HTTP", MIN (peeklen, 4)))
+ return start;
+
+ /* Look for "\n[\r]\n", and return the following position if found.
+ Start two chars before the current to cover the possibility that
+ part of the terminator (e.g. "\n\r") arrived in the previous
+ batch. */
+ p = peeked - start < 2 ? start : peeked - 2;
+ end = peeked + peeklen;
+
+ /* Check for \n\r\n or \n\n anywhere in [p, end-2). */
+ for (; p < end - 2; p++)
+ if (*p == '\n')
+ {
+ if (p[1] == '\r' && p[2] == '\n')
+ return p + 3;
+ else if (p[1] == '\n')
+ return p + 2;
+ }
+ /* p==end-2: check for \n\n directly preceding END. */
+ if (peeklen >= 2 && p[0] == '\n' && p[1] == '\n')
+ return p + 2;
+
+ return NULL;
+}
+
+/* The maximum size of a single HTTP response we care to read. Rather
+ than being a limit of the reader implementation, this limit
+ prevents Wget from slurping all available memory upon encountering
+ malicious or buggy server output, thus protecting the user. Define
+ it to 0 to remove the limit. */
+
+#define HTTP_RESPONSE_MAX_SIZE 65536
+
+/* Read the HTTP request head from FD and return it. The error
+ conditions are the same as with fd_read_hunk.
+
+ To support HTTP/0.9 responses, this function tries to make sure
+ that the data begins with "HTTP". If this is not the case, no data
+ is read and an empty request is returned, so that the remaining
+ data can be treated as body. */
+
+static char *
+read_http_response_head (int fd)
+{
+ return fd_read_hunk (fd, response_head_terminator, 512,
+ HTTP_RESPONSE_MAX_SIZE);
+}
+
+struct response {
+ /* The response data. */
+ const char *data;
+
+ /* The array of pointers that indicate where each header starts.
+ For example, given this HTTP response:
+
+ HTTP/1.0 200 Ok
+ Description: some
+ text
+ Etag: x
+
+ The headers are located like this:
+
+ "HTTP/1.0 200 Ok\r\nDescription: some\r\n text\r\nEtag: x\r\n\r\n"
+ ^ ^ ^ ^
+ headers[0] headers[1] headers[2] headers[3]
+
+ I.e. headers[0] points to the beginning of the request,
+ headers[1] points to the end of the first header and the
+ beginning of the second one, etc. */
+
+ const char **headers;
+};
+
+/* Create a new response object from the text of the HTTP response,
+ available in HEAD. That text is automatically split into
+ constituent header lines for fast retrieval using
+ resp_header_*. */
+
+static struct response *
+resp_new (char *head)
+{
+ char *hdr;
+ int count, size;
+
+ struct response *resp = xnew0 (struct response);
+ resp->data = head;
+
+ if (*head == '\0')
+ {
+ /* Empty head means that we're dealing with a headerless
+ (HTTP/0.9) response. In that case, don't set HEADERS at
+ all. */
+ return resp;
+ }
+
+ /* Split HEAD into header lines, so that resp_header_* functions
+ don't need to do this over and over again. */
+
+ size = count = 0;
+ hdr = head;
+ while (1)
+ {
+ DO_REALLOC (resp->headers, size, count + 1, const char *);
+ resp->headers[count++] = hdr;
+
+ /* Break upon encountering an empty line. */
+ if (!hdr[0] || (hdr[0] == '\r' && hdr[1] == '\n') || hdr[0] == '\n')
+ break;
+
+ /* Find the end of HDR, including continuations. */
+ for (;;)
+ {
+ char *end = strchr (hdr, '\n');
+
+ if (!end)
+ {
+ hdr += strlen (hdr);
+ break;
+ }
+
+ hdr = end + 1;
+
+ if (*hdr != ' ' && *hdr != '\t')
+ break;
+
+ // continuation, transform \r and \n into spaces
+ *end = ' ';
+ if (end > head && end[-1] == '\r')
+ end[-1] = ' ';
+ }
+ }
+ DO_REALLOC (resp->headers, size, count + 1, const char *);
+ resp->headers[count] = NULL;
+
+ return resp;
+}
+
+/* Locate the header named NAME in the request data, starting with
+ position START. This allows the code to loop through the request
+ data, filtering for all requests of a given name. Returns the
+ found position, or -1 for failure. The code that uses this
+ function typically looks like this:
+
+ for (pos = 0; (pos = resp_header_locate (...)) != -1; pos++)
+ ... do something with header ...
+
+ If you only care about one header, use resp_header_get instead of
+ this function. */
+
+static int
+resp_header_locate (const struct response *resp, const char *name, int start,
+ const char **begptr, const char **endptr)
+{
+ int i;
+ const char **headers = resp->headers;
+ int name_len;
+
+ if (!headers || !headers[1])
+ return -1;
+
+ name_len = strlen (name);
+ if (start > 0)
+ i = start;
+ else
+ i = 1;
+
+ for (; headers[i + 1]; i++)
+ {
+ const char *b = headers[i];
+ const char *e = headers[i + 1];
+ if (e - b > name_len
+ && b[name_len] == ':'
+ && 0 == c_strncasecmp (b, name, name_len))
+ {
+ b += name_len + 1;
+ while (b < e && c_isspace (*b))
+ ++b;
+ while (b < e && c_isspace (e[-1]))
+ --e;
+ *begptr = b;
+ *endptr = e;
+ return i;
+ }
+ }
+ return -1;
+}
+
+/* Find and retrieve the header named NAME in the request data. If
+ found, set *BEGPTR to its starting, and *ENDPTR to its ending
+ position, and return true. Otherwise return false.
+
+ This function is used as a building block for resp_header_copy
+ and resp_header_strdup. */
+
+static bool
+resp_header_get (const struct response *resp, const char *name,
+ const char **begptr, const char **endptr)
+{
+ int pos = resp_header_locate (resp, name, 0, begptr, endptr);
+ return pos != -1;
+}
+
+/* Copy the response header named NAME to buffer BUF, no longer than
+ BUFSIZE (BUFSIZE includes the terminating 0). If the header
+ exists, true is returned, false otherwise. If there should be no
+ limit on the size of the header, use resp_header_strdup instead.
+
+ If BUFSIZE is 0, no data is copied, but the boolean indication of
+ whether the header is present is still returned. */
+
+static bool
+resp_header_copy (const struct response *resp, const char *name,
+ char *buf, int bufsize)
+{
+ const char *b, *e;
+ if (!resp_header_get (resp, name, &b, &e))
+ return false;
+ if (bufsize)
+ {
+ int len = MIN (e - b, bufsize - 1);
+ memcpy (buf, b, len);
+ buf[len] = '\0';
+ }
+ return true;
+}
+
+/* Return the value of header named NAME in RESP, allocated with
+ malloc. If such a header does not exist in RESP, return NULL. */
+
+static char *
+resp_header_strdup (const struct response *resp, const char *name)
+{
+ const char *b, *e;
+ if (!resp_header_get (resp, name, &b, &e))
+ return NULL;
+ return strdupdelim (b, e);
+}
+
+/* Parse the HTTP status line, which is of format:
+
+ HTTP-Version SP Status-Code SP Reason-Phrase
+
+ The function returns the status-code, or -1 if the status line
+ appears malformed. The pointer to "reason-phrase" message is
+ returned in *MESSAGE. */
+
+static int
+resp_status (const struct response *resp, char **message)
+{
+ int status;
+ const char *p, *end;
+
+ if (!resp->headers)
+ {
+ /* For a HTTP/0.9 response, assume status 200. */
+ if (message)
+ *message = xstrdup (_("No headers, assuming HTTP/0.9"));
+ return 200;
+ }
+
+ p = resp->headers[0];
+ end = resp->headers[1];
+
+ if (!end)
+ return -1;
+
+ /* "HTTP" */
+ if (end - p < 4 || 0 != strncmp (p, "HTTP", 4))
+ return -1;
+ p += 4;
+
+ /* Match the HTTP version. This is optional because Gnutella
+ servers have been reported to not specify HTTP version. */
+ if (p < end && *p == '/')
+ {
+ ++p;
+ while (p < end && c_isdigit (*p))
+ ++p;
+ if (p < end && *p == '.')
+ ++p;
+ while (p < end && c_isdigit (*p))
+ ++p;
+ }
+
+ while (p < end && c_isspace (*p))
+ ++p;
+ if (end - p < 3 || !c_isdigit (p[0]) || !c_isdigit (p[1]) || !c_isdigit (p[2]))
+ return -1;
+
+ status = 100 * (p[0] - '0') + 10 * (p[1] - '0') + (p[2] - '0');
+ p += 3;
+
+ if (message)
+ {
+ while (p < end && c_isspace (*p))
+ ++p;
+ while (p < end && c_isspace (end[-1]))
+ --end;
+ *message = strdupdelim (p, end);
+ }
+
+ return status;
+}
+
+/* Release the resources used by RESP.
+ It is safe to call it with a valid pointer to a NULL pointer.
+ It is not safe to call it with a invalid or NULL pointer. */
+
+static void
+resp_free (struct response **resp_ref)
+{
+ struct response *resp = *resp_ref;
+
+ if (!resp)
+ return;
+
+ xfree (resp->headers);
+ xfree (resp);
+
+ *resp_ref = NULL;
+}
+
+/* Print a single line of response, the characters [b, e). We tried
+ getting away with
+ logprintf (LOG_VERBOSE, "%s%.*s\n", prefix, (int) (e - b), b);
+ but that failed to escape the non-printable characters and, in fact,
+ caused crashes in UTF-8 locales. */
+
+static void
+print_response_line (const char *prefix, const char *b, const char *e)
+{
+ char buf[1024], *copy;
+ size_t len = e - b;
+
+ if (len < sizeof (buf))
+ copy = buf;
+ else
+ copy = xmalloc(len + 1);
+
+ memcpy(copy, b, len);
+ copy[len] = 0;
+
+ logprintf (LOG_ALWAYS, "%s%s\n", prefix,
+ quotearg_style (escape_quoting_style, copy));
+
+ if (copy != buf)
+ xfree (copy);
+}
+
+/* Print the server response, line by line, omitting the trailing CRLF
+ from individual header lines, and prefixed with PREFIX. */
+
+static void
+print_server_response (const struct response *resp, const char *prefix)
+{
+ int i;
+ if (!resp->headers)
+ return;
+ for (i = 0; resp->headers[i + 1]; i++)
+ {
+ const char *b = resp->headers[i];
+ const char *e = resp->headers[i + 1];
+ /* Skip CRLF */
+ if (b < e && e[-1] == '\n')
+ --e;
+ if (b < e && e[-1] == '\r')
+ --e;
+ print_response_line (prefix, b, e);
+ }
+}
+
+/* Parse the `Content-Range' header and extract the information it
+ contains. Returns true if successful, false otherwise. */
+static bool
+parse_content_range (const char *hdr, wgint *first_byte_ptr,
+ wgint *last_byte_ptr, wgint *entity_length_ptr)
+{
+ wgint num;
+
+ /* Ancient versions of Netscape proxy server, presumably predating
+ rfc2068, sent out `Content-Range' without the "bytes"
+ specifier. */
+ if (0 == strncasecmp (hdr, "bytes", 5))
+ {
+ hdr += 5;
+ /* "JavaWebServer/1.1.1" sends "bytes: x-y/z", contrary to the
+ HTTP spec. */
+ if (*hdr == ':')
+ ++hdr;
+ while (c_isspace (*hdr))
+ ++hdr;
+ if (!*hdr)
+ return false;
+ }
+ if (!c_isdigit (*hdr))
+ return false;
+ for (num = 0; c_isdigit (*hdr); hdr++)
+ num = 10 * num + (*hdr - '0');
+ if (*hdr != '-' || !c_isdigit (*(hdr + 1)))
+ return false;
+ *first_byte_ptr = num;
+ ++hdr;
+ for (num = 0; c_isdigit (*hdr); hdr++)
+ num = 10 * num + (*hdr - '0');
+ if (*hdr != '/')
+ return false;
+ *last_byte_ptr = num;
+ if (!(c_isdigit (*(hdr + 1)) || *(hdr + 1) == '*'))
+ return false;
+ if (*last_byte_ptr < *first_byte_ptr)
+ return false;
+ ++hdr;
+ if (*hdr == '*')
+ num = -1;
+ else
+ for (num = 0; c_isdigit (*hdr); hdr++)
+ num = 10 * num + (*hdr - '0');
+ *entity_length_ptr = num;
+ if ((*entity_length_ptr <= *last_byte_ptr) && *entity_length_ptr != -1)
+ return false;
+ return true;
+}
+
+/* Read the body of the request, but don't store it anywhere and don't
+ display a progress gauge. This is useful for reading the bodies of
+ administrative responses to which we will soon issue another
+ request. The response is not useful to the user, but reading it
+ allows us to continue using the same connection to the server.
+
+ If reading fails, false is returned, true otherwise. In debug
+ mode, the body is displayed for debugging purposes. */
+
+static bool
+skip_short_body (int fd, wgint contlen, bool chunked)
+{
+ enum {
+ SKIP_SIZE = 512, /* size of the download buffer */
+ SKIP_THRESHOLD = 4096 /* the largest size we read */
+ };
+ wgint remaining_chunk_size = 0;
+ char dlbuf[SKIP_SIZE + 1];
+ dlbuf[SKIP_SIZE] = '\0'; /* so DEBUGP can safely print it */
+
+ /* If the body is too large, it makes more sense to simply close the
+ connection than to try to read the body. */
+ if (contlen > SKIP_THRESHOLD)
+ return false;
+
+ while (contlen > 0 || chunked)
+ {
+ int ret;
+ if (chunked)
+ {
+ if (remaining_chunk_size == 0)
+ {
+ char *line = fd_read_line (fd);
+ char *endl;
+ if (line == NULL)
+ break;
+
+ remaining_chunk_size = strtol (line, &endl, 16);
+ xfree (line);
+
+ if (remaining_chunk_size < 0)
+ return false;
+
+ if (remaining_chunk_size == 0)
+ {
+ line = fd_read_line (fd);
+ xfree (line);
+ break;
+ }
+ }
+
+ contlen = MIN (remaining_chunk_size, SKIP_SIZE);
+ }
+
+ DEBUGP (("Skipping %s bytes of body: [", number_to_static_string (contlen)));
+
+ ret = fd_read (fd, dlbuf, MIN (contlen, SKIP_SIZE), -1);
+ if (ret <= 0)
+ {
+ /* Don't normally report the error since this is an
+ optimization that should be invisible to the user. */
+ DEBUGP (("] aborting (%s).\n",
+ ret < 0 ? fd_errstr (fd) : "EOF received"));
+ return false;
+ }
+ contlen -= ret;
+
+ if (chunked)
+ {
+ remaining_chunk_size -= ret;
+ if (remaining_chunk_size == 0)
+ {
+ char *line = fd_read_line (fd);
+ if (line == NULL)
+ return false;
+ else
+ xfree (line);
+ }
+ }
+
+ /* Safe even if %.*s bogusly expects terminating \0 because
+ we've zero-terminated dlbuf above. */
+ DEBUGP (("%.*s", ret, dlbuf));
+ }
+
+ DEBUGP (("] done.\n"));
+ return true;
+}
+
+#define NOT_RFC2231 0
+#define RFC2231_NOENCODING 1
+#define RFC2231_ENCODING 2
+
+/* extract_param extracts the parameter name into NAME.
+ However, if the parameter name is in RFC2231 format then
+ this function adjusts NAME by stripping of the trailing
+ characters that are not part of the name but are present to
+ indicate the presence of encoding information in the value
+ or a fragment of a long parameter value
+*/
+static int
+modify_param_name (param_token *name)
+{
+ const char *delim1 = memchr (name->b, '*', name->e - name->b);
+ const char *delim2 = memrchr (name->b, '*', name->e - name->b);
+
+ int result;
+
+ if (delim1 == NULL)
+ {
+ result = NOT_RFC2231;
+ }
+ else if (delim1 == delim2)
+ {
+ if ((name->e - 1) == delim1)
+ {
+ result = RFC2231_ENCODING;
+ }
+ else
+ {
+ result = RFC2231_NOENCODING;
+ }
+ name->e = delim1;
+ }
+ else
+ {
+ name->e = delim1;
+ result = RFC2231_ENCODING;
+ }
+ return result;
+}
+
+/* extract_param extract the parameter value into VALUE.
+ Like modify_param_name this function modifies VALUE by
+ stripping off the encoding information from the actual value
+*/
+static void
+modify_param_value (param_token *value, int encoding_type )
+{
+ if (encoding_type == RFC2231_ENCODING)
+ {
+ const char *delim = memrchr (value->b, '\'', value->e - value->b);
+ if (delim != NULL)
+ {
+ value->b = (delim+1);
+ }
+ }
+}
+
+/* Extract a parameter from the string (typically an HTTP header) at
+ **SOURCE and advance SOURCE to the next parameter. Return false
+ when there are no more parameters to extract. The name of the
+ parameter is returned in NAME, and the value in VALUE. If the
+ parameter has no value, the token's value is zeroed out.
+
+ For example, if *SOURCE points to the string "attachment;
+ filename=\"foo bar\"", the first call to this function will return
+ the token named "attachment" and no value, and the second call will
+ return the token named "filename" and value "foo bar". The third
+ call will return false, indicating no more valid tokens.
+
+ is_url_encoded is an out parameter. If not NULL, a boolean value will be
+ stored into it, letting the caller know whether or not the extracted value is
+ URL-encoded. The caller can then decode it with url_unescape(), which however
+ performs decoding in-place. URL-encoding is used by RFC 2231 to support
+ non-US-ASCII characters in HTTP header values. */
+
+bool
+extract_param (const char **source, param_token *name, param_token *value,
+ char separator, bool *is_url_encoded)
+{
+ const char *p = *source;
+ int param_type;
+ if (is_url_encoded)
+ *is_url_encoded = false; /* initializing the out parameter */
+
+ while (c_isspace (*p)) ++p;
+ if (!*p)
+ {
+ *source = p;
+ return false; /* no error; nothing more to extract */
+ }
+
+ /* Extract name. */
+ name->b = p;
+ while (*p && !c_isspace (*p) && *p != '=' && *p != separator) ++p;
+ name->e = p;
+ if (name->b == name->e)
+ return false; /* empty name: error */
+ while (c_isspace (*p)) ++p;
+ if (*p == separator || !*p) /* no value */
+ {
+ xzero (*value);
+ if (*p == separator) ++p;
+ *source = p;
+ return true;
+ }
+ if (*p != '=')
+ return false; /* error */
+
+ /* *p is '=', extract value */
+ ++p;
+ while (c_isspace (*p)) ++p;
+ if (*p == '"') /* quoted */
+ {
+ value->b = ++p;
+ while (*p && *p != '"') ++p;
+ if (!*p)
+ return false;
+ value->e = p++;
+ /* Currently at closing quote; find the end of param. */
+ while (c_isspace (*p)) ++p;
+ while (*p && *p != separator) ++p;
+ if (*p == separator)
+ ++p;
+ else if (*p)
+ /* garbage after closed quote, e.g. foo="bar"baz */
+ return false;
+ }
+ else /* unquoted */
+ {
+ value->b = p;
+ while (*p && *p != separator) ++p;
+ value->e = p;
+ while (value->e != value->b && c_isspace (value->e[-1]))
+ --value->e;
+ if (*p == separator) ++p;
+ }
+ *source = p;
+
+ param_type = modify_param_name (name);
+ if (param_type != NOT_RFC2231)
+ {
+ if (param_type == RFC2231_ENCODING && is_url_encoded)
+ *is_url_encoded = true;
+ modify_param_value (value, param_type);
+ }
+ return true;
+}
+
+#undef NOT_RFC2231
+#undef RFC2231_NOENCODING
+#undef RFC2231_ENCODING
+
+/* Appends the string represented by VALUE to FILENAME */
+
+static void
+append_value_to_filename (char **filename, param_token const * const value,
+ bool is_url_encoded)
+{
+ int original_length = strlen (*filename);
+ int new_length = strlen (*filename) + (value->e - value->b);
+ *filename = xrealloc (*filename, new_length+1);
+ memcpy (*filename + original_length, value->b, (value->e - value->b));
+ (*filename)[new_length] = '\0';
+ if (is_url_encoded)
+ url_unescape (*filename + original_length);
+}
+
+/* Parse the contents of the `Content-Disposition' header, extracting
+ the information useful to Wget. Content-Disposition is a header
+ borrowed from MIME; when used in HTTP, it typically serves for
+ specifying the desired file name of the resource. For example:
+
+ Content-Disposition: attachment; filename="flora.jpg"
+
+ Wget will skip the tokens it doesn't care about, such as
+ "attachment" in the previous example; it will also skip other
+ unrecognized params. If the header is syntactically correct and
+ contains a file name, a copy of the file name is stored in
+ *filename and true is returned. Otherwise, the function returns
+ false.
+
+ The file name is stripped of directory components and must not be
+ empty.
+
+ Historically, this function returned filename prefixed with opt.dir_prefix,
+ now that logic is handled by the caller, new code should pay attention,
+ changed by crq, Sep 2010.
+
+*/
+static bool
+parse_content_disposition (const char *hdr, char **filename)
+{
+ param_token name, value;
+ bool is_url_encoded = false;
+
+ char *encodedFilename = NULL;
+ char *unencodedFilename = NULL;
+ for ( ; extract_param (&hdr, &name, &value, ';', &is_url_encoded);
+ is_url_encoded = false)
+ {
+ int isFilename = BOUNDED_EQUAL_NO_CASE (name.b, name.e, "filename");
+ if ( isFilename && value.b != NULL)
+ {
+ /* Make the file name begin at the last slash or backslash. */
+ bool isEncodedFilename;
+ char **outFilename;
+ const char *last_slash = memrchr (value.b, '/', value.e - value.b);
+ const char *last_bs = memrchr (value.b, '\\', value.e - value.b);
+ if (last_slash && last_bs)
+ value.b = 1 + MAX (last_slash, last_bs);
+ else if (last_slash || last_bs)
+ value.b = 1 + (last_slash ? last_slash : last_bs);
+ if (value.b == value.e)
+ continue;
+
+ /* Check if the name is "filename*" as specified in RFC 6266.
+ * Since "filename" could be broken up as "filename*N" (RFC 2231),
+ * a check is needed to make sure this is not the case */
+ isEncodedFilename = *name.e == '*' && !c_isdigit (*(name.e + 1));
+ outFilename = isEncodedFilename ? &encodedFilename
+ : &unencodedFilename;
+ if (*outFilename)
+ append_value_to_filename (outFilename, &value, is_url_encoded);
+ else
+ {
+ *outFilename = strdupdelim (value.b, value.e);
+ if (is_url_encoded)
+ url_unescape (*outFilename);
+ }
+ }
+ }
+ if (encodedFilename)
+ {
+ xfree (unencodedFilename);
+ *filename = encodedFilename;
+ }
+ else
+ {
+ xfree (encodedFilename);
+ *filename = unencodedFilename;
+ }
+ if (*filename)
+ return true;
+ else
+ return false;
+}
+
+#ifdef HAVE_HSTS
+static bool
+parse_strict_transport_security (const char *header, time_t *max_age, bool *include_subdomains)
+{
+ param_token name, value;
+ const char *c_max_age = NULL;
+ bool is = false; /* includeSubDomains */
+ bool is_url_encoded = false;
+ bool success = false;
+
+ if (header)
+ {
+ /* Process the STS header. Keys should be matched case-insensitively. */
+ for (; extract_param (&header, &name, &value, ';', &is_url_encoded); is_url_encoded = false)
+ {
+ if (BOUNDED_EQUAL_NO_CASE (name.b, name.e, "max-age"))
+ {
+ xfree (c_max_age);
+ c_max_age = strdupdelim (value.b, value.e);
+ }
+ else if (BOUNDED_EQUAL_NO_CASE (name.b, name.e, "includeSubDomains"))
+ is = true;
+ }
+
+ /* pass the parsed values over */
+ if (c_max_age)
+ {
+ /* If the string value goes out of a long's bounds, strtol() will return LONG_MIN or LONG_MAX.
+ * In theory, the HSTS engine should be able to handle it.
+ * Also, time_t is normally defined as a long, so this should not break.
+ */
+ if (max_age)
+ *max_age = (time_t) strtol (c_max_age, NULL, 10);
+ if (include_subdomains)
+ *include_subdomains = is;
+
+ DEBUGP (("Parsed Strict-Transport-Security max-age = %s, includeSubDomains = %s\n",
+ c_max_age, (is ? "true" : "false")));
+
+ xfree (c_max_age);
+ success = true;
+ }
+ else
+ {
+ /* something weird happened */
+ logprintf (LOG_VERBOSE, "Could not parse String-Transport-Security header\n");
+ success = false;
+ }
+ }
+
+ return success;
+}
+#endif
+
+/* Persistent connections. Currently, we cache the most recently used
+ connection as persistent, provided that the HTTP server agrees to
+ make it such. The persistence data is stored in the variables
+ below. Ideally, it should be possible to cache an arbitrary fixed
+ number of these connections. */
+
+/* Whether a persistent connection is active. */
+static bool pconn_active;
+
+static struct {
+ /* The socket of the connection. */
+ int socket;
+
+ /* Host and port of the currently active persistent connection. */
+ char *host;
+ int port;
+
+ /* Whether a ssl handshake has occurred on this connection. */
+ bool ssl;
+
+ /* Whether the connection was authorized. This is only done by
+ NTLM, which authorizes *connections* rather than individual
+ requests. (That practice is peculiar for HTTP, but it is a
+ useful optimization.) */
+ bool authorized;
+
+#ifdef ENABLE_NTLM
+ /* NTLM data of the current connection. */
+ struct ntlmdata ntlm;
+#endif
+} pconn;
+
+/* Mark the persistent connection as invalid and free the resources it
+ uses. This is used by the CLOSE_* macros after they forcefully
+ close a registered persistent connection. */
+
+static void
+invalidate_persistent (void)
+{
+ DEBUGP (("Disabling further reuse of socket %d.\n", pconn.socket));
+ pconn_active = false;
+ fd_close (pconn.socket);
+ xfree (pconn.host);
+ xzero (pconn);
+}
+
+/* Register FD, which should be a TCP/IP connection to HOST:PORT, as
+ persistent. This will enable someone to use the same connection
+ later. In the context of HTTP, this must be called only AFTER the
+ response has been received and the server has promised that the
+ connection will remain alive.
+
+ If a previous connection was persistent, it is closed. */
+
+static void
+register_persistent (const char *host, int port, int fd, bool ssl)
+{
+ if (pconn_active)
+ {
+ if (pconn.socket == fd)
+ {
+ /* The connection FD is already registered. */
+ return;
+ }
+ else
+ {
+ /* The old persistent connection is still active; close it
+ first. This situation arises whenever a persistent
+ connection exists, but we then connect to a different
+ host, and try to register a persistent connection to that
+ one. */
+ invalidate_persistent ();
+ }
+ }
+
+ pconn_active = true;
+ pconn.socket = fd;
+ pconn.host = xstrdup (host);
+ pconn.port = port;
+ pconn.ssl = ssl;
+ pconn.authorized = false;
+
+ DEBUGP (("Registered socket %d for persistent reuse.\n", fd));
+}
+
+/* Return true if a persistent connection is available for connecting
+ to HOST:PORT. */
+
+static bool
+persistent_available_p (const char *host, int port, bool ssl,
+ bool *host_lookup_failed)
+{
+ /* First, check whether a persistent connection is active at all. */
+ if (!pconn_active)
+ return false;
+
+ /* If we want SSL and the last connection wasn't or vice versa,
+ don't use it. Checking for host and port is not enough because
+ HTTP and HTTPS can apparently coexist on the same port. */
+ if (ssl != pconn.ssl)
+ return false;
+
+ /* If we're not connecting to the same port, we're not interested. */
+ if (port != pconn.port)
+ return false;
+
+ /* If the host is the same, we're in business. If not, there is
+ still hope -- read below. */
+ if (0 != strcasecmp (host, pconn.host))
+ {
+ /* Check if pconn.socket is talking to HOST under another name.
+ This happens often when both sites are virtual hosts
+ distinguished only by name and served by the same network
+ interface, and hence the same web server (possibly set up by
+ the ISP and serving many different web sites). This
+ admittedly unconventional optimization does not contradict
+ HTTP and works well with popular server software. */
+
+ bool found;
+ ip_address ip;
+ struct address_list *al;
+
+ if (ssl)
+ /* Don't try to talk to two different SSL sites over the same
+ secure connection! (Besides, it's not clear that
+ name-based virtual hosting is even possible with SSL.) */
+ return false;
+
+ /* If pconn.socket's peer is one of the IP addresses HOST
+ resolves to, pconn.socket is for all intents and purposes
+ already talking to HOST. */
+
+ if (!socket_ip_address (pconn.socket, &ip, ENDPOINT_PEER))
+ {
+ /* Can't get the peer's address -- something must be very
+ wrong with the connection. */
+ invalidate_persistent ();
+ return false;
+ }
+ al = lookup_host (host, 0);
+ if (!al)
+ {
+ *host_lookup_failed = true;
+ return false;
+ }
+
+ found = address_list_contains (al, &ip);
+ address_list_release (al);
+
+ if (!found)
+ return false;
+
+ /* The persistent connection's peer address was found among the
+ addresses HOST resolved to; therefore, pconn.sock is in fact
+ already talking to HOST -- no need to reconnect. */
+ }
+
+ /* Finally, check whether the connection is still open. This is
+ important because most servers implement liberal (short) timeout
+ on persistent connections. Wget can of course always reconnect
+ if the connection doesn't work out, but it's nicer to know in
+ advance. This test is a logical followup of the first test, but
+ is "expensive" and therefore placed at the end of the list.
+
+ (Current implementation of test_socket_open has a nice side
+ effect that it treats sockets with pending data as "closed".
+ This is exactly what we want: if a broken server sends message
+ body in response to HEAD, or if it sends more than conent-length
+ data, we won't reuse the corrupted connection.) */
+
+ if (!test_socket_open (pconn.socket))
+ {
+ /* Oops, the socket is no longer open. Now that we know that,
+ let's invalidate the persistent connection before returning
+ 0. */
+ invalidate_persistent ();
+ return false;
+ }
+
+ return true;
+}
+
+/* The idea behind these two CLOSE macros is to distinguish between
+ two cases: one when the job we've been doing is finished, and we
+ want to close the connection and leave, and two when something is
+ seriously wrong and we're closing the connection as part of
+ cleanup.
+
+ In case of keep_alive, CLOSE_FINISH should leave the connection
+ open, while CLOSE_INVALIDATE should still close it.
+
+ Note that the semantics of the flag `keep_alive' is "this
+ connection *will* be reused (the server has promised not to close
+ the connection once we're done)", while the semantics of
+ `pc_active_p && (fd) == pc_last_fd' is "we're *now* using an
+ active, registered connection". */
+
+#define CLOSE_FINISH(fd) do { \
+ if (!keep_alive) \
+ { \
+ if (pconn_active && (fd) == pconn.socket) \
+ invalidate_persistent (); \
+ else \
+ fd_close (fd); \
+ fd = -1; \
+ } \
+} while (0)
+
+#define CLOSE_INVALIDATE(fd) do { \
+ if (pconn_active && (fd) == pconn.socket) \
+ invalidate_persistent (); \
+ else \
+ fd_close (fd); \
+ fd = -1; \
+} while (0)
+
+typedef enum
+{
+ ENC_INVALID = -1, /* invalid encoding */
+ ENC_NONE = 0, /* no special encoding */
+ ENC_GZIP, /* gzip compression */
+ ENC_DEFLATE, /* deflate compression */
+ ENC_COMPRESS, /* compress compression */
+ ENC_BROTLI /* brotli compression */
+} encoding_t;
+
+struct http_stat
+{
+ wgint len; /* received length */
+ wgint contlen; /* expected length */
+ wgint restval; /* the restart value */
+ int res; /* the result of last read */
+ char *rderrmsg; /* error message from read error */
+ char *newloc; /* new location (redirection) */
+ char *remote_time; /* remote time-stamp string */
+ char *error; /* textual HTTP error */
+ int statcode; /* status code */
+ char *message; /* status message */
+ wgint rd_size; /* amount of data read from socket */
+ double dltime; /* time it took to download the data */
+ const char *referer; /* value of the referer header. */
+ char *local_file; /* local file name. */
+ bool existence_checked; /* true if we already checked for a file's
+ existence after having begun to download
+ (needed in gethttp for when connection is
+ interrupted/restarted. */
+ bool timestamp_checked; /* true if pre-download time-stamping checks
+ * have already been performed */
+ char *orig_file_name; /* name of file to compare for time-stamping
+ * (might be != local_file if -K is set) */
+ wgint orig_file_size; /* size of file to compare for time-stamping */
+ time_t orig_file_tstamp; /* time-stamp of file to compare for
+ * time-stamping */
+#ifdef HAVE_METALINK
+ metalink_t *metalink;
+#endif
+
+ encoding_t local_encoding; /* the encoding of the local file */
+ encoding_t remote_encoding; /* the encoding of the remote file */
+
+ bool temporary; /* downloading a temporary file */
+};
+
+static void
+free_hstat (struct http_stat *hs)
+{
+ xfree (hs->newloc);
+ xfree (hs->remote_time);
+ xfree (hs->error);
+ xfree (hs->rderrmsg);
+ xfree (hs->local_file);
+ xfree (hs->orig_file_name);
+ xfree (hs->message);
+#ifdef HAVE_METALINK
+ metalink_delete (hs->metalink);
+ hs->metalink = NULL;
+#endif
+}
+
+static void
+get_file_flags (const char *filename, int *dt)
+{
+ logprintf (LOG_VERBOSE, _("\
+File %s already there; not retrieving.\n\n"), quote (filename));
+ /* If the file is there, we suppose it's retrieved OK. */
+ *dt |= RETROKF;
+
+ /* #### Bogusness alert. */
+ /* If its suffix is "html" or "htm" or similar, assume text/html. */
+ if (has_html_suffix_p (filename))
+ *dt |= TEXTHTML;
+}
+
+/* Download the response body from the socket and writes it to
+ an output file. The headers have already been read from the
+ socket. If WARC is enabled, the response body will also be
+ written to a WARC response record.
+
+ hs, contlen, contrange, chunked_transfer_encoding and url are
+ parameters from the gethttp method. fp is a pointer to the
+ output file.
+
+ url, warc_timestamp_str, warc_request_uuid, warc_ip, type
+ and statcode will be saved in the headers of the WARC record.
+ The head parameter contains the HTTP headers of the response.
+
+ If fp is NULL and WARC is enabled, the response body will be
+ written only to the WARC file. If WARC is disabled and fp
+ is a file pointer, the data will be written to the file.
+ If fp is a file pointer and WARC is enabled, the body will
+ be written to both destinations.
+
+ Returns the error code. */
+static int
+read_response_body (struct http_stat *hs, int sock, FILE *fp, wgint contlen,
+ wgint contrange, bool chunked_transfer_encoding,
+ char *url, char *warc_timestamp_str, char *warc_request_uuid,
+ ip_address *warc_ip, char *type, int statcode, char *head)
+{
+ int warc_payload_offset = 0;
+ FILE *warc_tmp = NULL;
+ int warcerr = 0;
+ int flags = 0;
+
+ if (opt.warc_filename != NULL)
+ {
+ /* Open a temporary file where we can write the response before we
+ add it to the WARC record. */
+ warc_tmp = warc_tempfile ();
+ if (warc_tmp == NULL)
+ warcerr = WARC_TMP_FOPENERR;
+
+ if (warcerr == 0)
+ {
+ /* We should keep the response headers for the WARC record. */
+ int head_len = strlen (head);
+ int warc_tmp_written = fwrite (head, 1, head_len, warc_tmp);
+ if (warc_tmp_written != head_len)
+ warcerr = WARC_TMP_FWRITEERR;
+ warc_payload_offset = head_len;
+ }
+
+ if (warcerr != 0)
+ {
+ if (warc_tmp != NULL)
+ fclose (warc_tmp);
+ return warcerr;
+ }
+ }
+
+ if (fp != NULL)
+ {
+ /* This confuses the timestamping code that checks for file size.
+ #### The timestamping code should be smarter about file size. */
+ if (opt.save_headers && hs->restval == 0)
+ fwrite (head, 1, strlen (head), fp);
+ }
+
+ /* Read the response body. */
+ if (contlen != -1)
+ /* If content-length is present, read that much; otherwise, read
+ until EOF. The HTTP spec doesn't require the server to
+ actually close the connection when it's done sending data. */
+ flags |= rb_read_exactly;
+ if (fp != NULL && hs->restval > 0 && contrange == 0)
+ /* If the server ignored our range request, instruct fd_read_body
+ to skip the first RESTVAL bytes of body. */
+ flags |= rb_skip_startpos;
+ if (chunked_transfer_encoding)
+ flags |= rb_chunked_transfer_encoding;
+
+ if (hs->remote_encoding == ENC_GZIP)
+ flags |= rb_compressed_gzip;
+
+ hs->len = hs->restval;
+ hs->rd_size = 0;
+ /* Download the response body and write it to fp.
+ If we are working on a WARC file, we simultaneously write the
+ response body to warc_tmp. */
+ hs->res = fd_read_body (hs->local_file, sock, fp, contlen != -1 ? contlen : 0,
+ hs->restval, &hs->rd_size, &hs->len, &hs->dltime,
+ flags, warc_tmp);
+ if (hs->res >= 0)
+ {
+ if (warc_tmp != NULL)
+ {
+ /* Create a response record and write it to the WARC file.
+ Note: per the WARC standard, the request and response should share
+ the same date header. We re-use the timestamp of the request.
+ The response record should also refer to the uuid of the request. */
+ bool r = warc_write_response_record (url, warc_timestamp_str,
+ warc_request_uuid, warc_ip,
+ warc_tmp, warc_payload_offset,
+ type, statcode, hs->newloc);
+
+ /* warc_write_response_record has closed warc_tmp. */
+
+ if (! r)
+ return WARC_ERR;
+ }
+
+ return RETRFINISHED;
+ }
+
+ if (warc_tmp != NULL)
+ fclose (warc_tmp);
+
+ if (hs->res == -2)
+ {
+ /* Error while writing to fd. */
+ return FWRITEERR;
+ }
+ else if (hs->res == -3)
+ {
+ /* Error while writing to warc_tmp. */
+ return WARC_TMP_FWRITEERR;
+ }
+ else
+ {
+ /* A read error! */
+ xfree (hs->rderrmsg);
+ hs->rderrmsg = xstrdup (fd_errstr (sock));
+ return RETRFINISHED;
+ }
+}
+
+#define BEGINS_WITH(line, string_constant) \
+ (!c_strncasecmp (line, string_constant, sizeof (string_constant) - 1) \
+ && (c_isspace (line[sizeof (string_constant) - 1]) \
+ || !line[sizeof (string_constant) - 1]))
+
+#define SET_USER_AGENT(req) do { \
+ if (!opt.useragent) \
+ request_set_header (req, "User-Agent", \
+ aprintf ("Wget/%s", \
+ version_string), \
+ rel_value); \
+ else if (*opt.useragent) \
+ request_set_header (req, "User-Agent", opt.useragent, rel_none); \
+} while (0)
+
+/*
+ Convert time_t to one of valid HTTP date formats
+ ie. rfc1123-date.
+
+ HTTP-date = rfc1123-date | rfc850-date | asctime-date
+ rfc1123-date = wkday "," SP date1 SP time SP "GMT"
+ rfc850-date = weekday "," SP date2 SP time SP "GMT"
+ asctime-date = wkday SP date3 SP time SP 4DIGIT
+ date1 = 2DIGIT SP month SP 4DIGIT
+ ; day month year (e.g., 02 Jun 1982)
+ date2 = 2DIGIT "-" month "-" 2DIGIT
+ ; day-month-year (e.g., 02-Jun-82)
+ date3 = month SP ( 2DIGIT | ( SP 1DIGIT ))
+ ; month day (e.g., Jun 2)
+ time = 2DIGIT ":" 2DIGIT ":" 2DIGIT
+ ; 00:00:00 - 23:59:59
+ wkday = "Mon" | "Tue" | "Wed"
+ | "Thu" | "Fri" | "Sat" | "Sun"
+ weekday = "Monday" | "Tuesday" | "Wednesday"
+ | "Thursday" | "Friday" | "Saturday" | "Sunday"
+ month = "Jan" | "Feb" | "Mar" | "Apr"
+ | "May" | "Jun" | "Jul" | "Aug"
+ | "Sep" | "Oct" | "Nov" | "Dec"
+
+ source: RFC2616 */
+static uerr_t
+time_to_rfc1123 (time_t time, char *buf, size_t bufsize)
+{
+ static const char *wkday[] = { "Sun", "Mon", "Tue", "Wed",
+ "Thu", "Fri", "Sat" };
+ static const char *month[] = { "Jan", "Feb", "Mar", "Apr",
+ "May", "Jun", "Jul", "Aug",
+ "Sep", "Oct", "Nov", "Dec" };
+ /* rfc1123 example: Thu, 01 Jan 1998 22:12:57 GMT */
+ static const char *time_format = "%s, %02d %s %04d %02d:%02d:%02d GMT";
+
+ struct tm *gtm = gmtime (&time);
+ if (!gtm)
+ {
+ logprintf (LOG_NOTQUIET,
+ _("gmtime failed. This is probably a bug.\n"));
+ return TIMECONV_ERR;
+ }
+
+ snprintf (buf, bufsize, time_format, wkday[gtm->tm_wday],
+ gtm->tm_mday, month[gtm->tm_mon],
+ gtm->tm_year + 1900, gtm->tm_hour,
+ gtm->tm_min, gtm->tm_sec);
+
+ return RETROK;
+}
+
+static struct request *
+initialize_request (const struct url *u, struct http_stat *hs, int *dt, struct url *proxy,
+ bool inhibit_keep_alive, bool *basic_auth_finished,
+ wgint *body_data_size, char **user, char **passwd, uerr_t *ret)
+{
+ bool head_only = !!(*dt & HEAD_ONLY);
+ struct request *req;
+
+ /* Prepare the request to send. */
+ {
+ char *meth_arg;
+ const char *meth = "GET";
+ if (head_only)
+ meth = "HEAD";
+ else if (opt.method)
+ meth = opt.method;
+ /* Use the full path, i.e. one that includes the leading slash and
+ the query string. E.g. if u->path is "foo/bar" and u->query is
+ "param=value", full_path will be "/foo/bar?param=value". */
+ if (proxy
+#ifdef HAVE_SSL
+ /* When using SSL over proxy, CONNECT establishes a direct
+ connection to the HTTPS server. Therefore use the same
+ argument as when talking to the server directly. */
+ && u->scheme != SCHEME_HTTPS
+#endif
+ )
+ meth_arg = xstrdup (u->url);
+ else
+ meth_arg = url_full_path (u);
+ req = request_new (meth, meth_arg);
+ }
+
+ request_set_header (req, "Referer", hs->referer, rel_none);
+ if (*dt & SEND_NOCACHE)
+ {
+ /* Cache-Control MUST be obeyed by all HTTP/1.1 caching mechanisms... */
+ request_set_header (req, "Cache-Control", "no-cache", rel_none);
+
+ /* ... but some HTTP/1.0 caches doesn't implement Cache-Control. */
+ request_set_header (req, "Pragma", "no-cache", rel_none);
+ }
+ if (*dt & IF_MODIFIED_SINCE)
+ {
+ char strtime[32];
+ uerr_t err = time_to_rfc1123 (hs->orig_file_tstamp, strtime, countof (strtime));
+
+ if (err != RETROK)
+ {
+ logputs (LOG_VERBOSE, _("Cannot convert timestamp to http format. "
+ "Falling back to time 0 as last modification "
+ "time.\n"));
+ strcpy (strtime, "Thu, 01 Jan 1970 00:00:00 GMT");
+ }
+ request_set_header (req, "If-Modified-Since", xstrdup (strtime), rel_value);
+ }
+ if (hs->restval)
+ request_set_header (req, "Range",
+ aprintf ("bytes=%s-",
+ number_to_static_string (hs->restval)),
+ rel_value);
+ SET_USER_AGENT (req);
+ request_set_header (req, "Accept", "*/*", rel_none);
+#ifdef HAVE_LIBZ
+ if (opt.compression != compression_none)
+ request_set_header (req, "Accept-Encoding", "gzip", rel_none);
+ else
+#endif
+ request_set_header (req, "Accept-Encoding", "identity", rel_none);
+
+ /* Find the username with priority */
+ if (u->user)
+ *user = u->user;
+ else if (opt.user && (opt.use_askpass || opt.ask_passwd))
+ *user = opt.user;
+ else if (opt.http_user)
+ *user = opt.http_user;
+ else if (opt.user)
+ *user = opt.user;
+ else
+ *user = NULL;
+
+ /* Find the password with priority */
+ if (u->passwd)
+ *passwd = u->passwd;
+ else if (opt.passwd && (opt.use_askpass || opt.ask_passwd))
+ *passwd = opt.passwd;
+ else if (opt.http_passwd)
+ *passwd = opt.http_passwd;
+ else if (opt.passwd)
+ *passwd = opt.passwd;
+ else
+ *passwd = NULL;
+
+ /* Check for ~/.netrc if none of the above match */
+ if (opt.netrc && (!*user || !*passwd))
+ search_netrc (u->host, (const char **) user, (const char **) passwd, 0, NULL);
+
+ /* We only do "site-wide" authentication with "global" user/password
+ * values unless --auth-no-challenge has been requested; URL user/password
+ * info overrides. */
+ if (*user && *passwd && (!u->user || opt.auth_without_challenge))
+ {
+ /* If this is a host for which we've already received a Basic
+ * challenge, we'll go ahead and send Basic authentication creds. */
+ *basic_auth_finished = maybe_send_basic_creds (u->host, *user, *passwd, req);
+ }
+
+ /* Generate the Host header, HOST:PORT. Take into account that:
+
+ - Broken server-side software often doesn't recognize the PORT
+ argument, so we must generate "Host: www.server.com" instead of
+ "Host: www.server.com:80" (and likewise for https port).
+
+ - IPv6 addresses contain ":", so "Host: 3ffe:8100:200:2::2:1234"
+ becomes ambiguous and needs to be rewritten as "Host:
+ [3ffe:8100:200:2::2]:1234". */
+ {
+ /* Formats arranged for hfmt[add_port][add_squares]. */
+ static const char *hfmt[][2] = {
+ { "%s", "[%s]" }, { "%s:%d", "[%s]:%d" }
+ };
+ int add_port = u->port != scheme_default_port (u->scheme);
+ int add_squares = strchr (u->host, ':') != NULL;
+ request_set_header (req, "Host",
+ aprintf (hfmt[add_port][add_squares], u->host, u->port),
+ rel_value);
+ }
+
+ if (inhibit_keep_alive)
+ request_set_header (req, "Connection", "Close", rel_none);
+ else
+ {
+ request_set_header (req, "Connection", "Keep-Alive", rel_none);
+ if (proxy)
+ request_set_header (req, "Proxy-Connection", "Keep-Alive", rel_none);
+ }
+
+ if (opt.method)
+ {
+
+ if (opt.body_data || opt.body_file)
+ {
+ request_set_header (req, "Content-Type",
+ "application/x-www-form-urlencoded", rel_none);
+
+ if (opt.body_data)
+ *body_data_size = strlen (opt.body_data);
+ else
+ {
+ *body_data_size = file_size (opt.body_file);
+ if (*body_data_size == -1)
+ {
+ logprintf (LOG_NOTQUIET, _("BODY data file %s missing: %s\n"),
+ quote (opt.body_file), strerror (errno));
+ request_free (&req);
+ *ret = FILEBADFILE;
+ return NULL;
+ }
+ }
+ request_set_header (req, "Content-Length",
+ xstrdup (number_to_static_string (*body_data_size)),
+ rel_value);
+ }
+ else if (c_strcasecmp (opt.method, "post") == 0
+ || c_strcasecmp (opt.method, "put") == 0
+ || c_strcasecmp (opt.method, "patch") == 0)
+ request_set_header (req, "Content-Length", "0", rel_none);
+ }
+ return req;
+}
+
+static void
+initialize_proxy_configuration (const struct url *u, struct request *req,
+ struct url *proxy, char **proxyauth)
+{
+ char *proxy_user, *proxy_passwd;
+ /* For normal username and password, URL components override
+ command-line/wgetrc parameters. With proxy
+ authentication, it's the reverse, because proxy URLs are
+ normally the "permanent" ones, so command-line args
+ should take precedence. */
+ if (opt.proxy_user && opt.proxy_passwd)
+ {
+ proxy_user = opt.proxy_user;
+ proxy_passwd = opt.proxy_passwd;
+ }
+ else
+ {
+ proxy_user = proxy->user;
+ proxy_passwd = proxy->passwd;
+ }
+ /* #### This does not appear right. Can't the proxy request,
+ say, `Digest' authentication? */
+ if (proxy_user && proxy_passwd)
+ *proxyauth = basic_authentication_encode (proxy_user, proxy_passwd);
+
+ /* Proxy authorization over SSL is handled below. */
+#ifdef HAVE_SSL
+ if (u->scheme != SCHEME_HTTPS)
+#endif
+ request_set_header (req, "Proxy-Authorization", *proxyauth, rel_value);
+}
+
+static uerr_t
+establish_connection (const struct url *u, const struct url **conn_ref,
+ struct http_stat *hs, struct url *proxy,
+ char **proxyauth,
+ struct request **req_ref, bool *using_ssl,
+ bool inhibit_keep_alive,
+ int *sock_ref)
+{
+ bool host_lookup_failed = false;
+ int sock = *sock_ref;
+ struct request *req = *req_ref;
+ const struct url *conn = *conn_ref;
+ struct response *resp;
+ int write_error;
+ int statcode;
+
+ if (! inhibit_keep_alive)
+ {
+ /* Look for a persistent connection to target host, unless a
+ proxy is used. The exception is when SSL is in use, in which
+ case the proxy is nothing but a passthrough to the target
+ host, registered as a connection to the latter. */
+ const struct url *relevant = conn;
+#ifdef HAVE_SSL
+ if (u->scheme == SCHEME_HTTPS)
+ relevant = u;
+#endif
+
+ if (persistent_available_p (relevant->host, relevant->port,
+#ifdef HAVE_SSL
+ relevant->scheme == SCHEME_HTTPS,
+#else
+ 0,
+#endif
+ &host_lookup_failed))
+ {
+ int family = socket_family (pconn.socket, ENDPOINT_PEER);
+ sock = pconn.socket;
+ *using_ssl = pconn.ssl;
+#if ENABLE_IPV6
+ if (family == AF_INET6)
+ logprintf (LOG_VERBOSE, _("Reusing existing connection to [%s]:%d.\n"),
+ quotearg_style (escape_quoting_style, pconn.host),
+ pconn.port);
+ else
+#endif
+ logprintf (LOG_VERBOSE, _("Reusing existing connection to %s:%d.\n"),
+ quotearg_style (escape_quoting_style, pconn.host),
+ pconn.port);
+ DEBUGP (("Reusing fd %d.\n", sock));
+ if (pconn.authorized)
+ /* If the connection is already authorized, the "Basic"
+ authorization added by code above is unnecessary and
+ only hurts us. */
+ request_remove_header (req, "Authorization");
+ }
+ else if (host_lookup_failed)
+ {
+ logprintf(LOG_NOTQUIET,
+ _("%s: unable to resolve host address %s\n"),
+ exec_name, quote (relevant->host));
+ return HOSTERR;
+ }
+ else if (sock != -1)
+ {
+ sock = -1;
+ }
+ }
+
+ if (sock < 0)
+ {
+ sock = connect_to_host (conn->host, conn->port);
+ if (sock == E_HOST)
+ return HOSTERR;
+ else if (sock < 0)
+ return (retryable_socket_connect_error (errno)
+ ? CONERROR : CONIMPOSSIBLE);
+
+#ifdef HAVE_SSL
+ if (proxy && u->scheme == SCHEME_HTTPS)
+ {
+ char *head;
+ char *message;
+ /* When requesting SSL URLs through proxies, use the
+ CONNECT method to request passthrough. */
+ struct request *connreq = request_new ("CONNECT",
+ aprintf ("%s:%d", u->host, u->port));
+ SET_USER_AGENT (connreq);
+ if (proxyauth)
+ {
+ request_set_header (connreq, "Proxy-Authorization",
+ *proxyauth, rel_value);
+ /* Now that PROXYAUTH is part of the CONNECT request,
+ zero it out so we don't send proxy authorization with
+ the regular request below. */
+ *proxyauth = NULL;
+ }
+ request_set_header (connreq, "Host",
+ aprintf ("%s:%d", u->host, u->port),
+ rel_value);
+
+ write_error = request_send (connreq, sock, 0);
+ request_free (&connreq);
+ if (write_error < 0)
+ {
+ CLOSE_INVALIDATE (sock);
+ return WRITEFAILED;
+ }
+
+ head = read_http_response_head (sock);
+ if (!head)
+ {
+ logprintf (LOG_VERBOSE, _("Failed reading proxy response: %s\n"),
+ fd_errstr (sock));
+ CLOSE_INVALIDATE (sock);
+ return HERR;
+ }
+ message = NULL;
+ if (!*head)
+ {
+ xfree (head);
+ goto failed_tunnel;
+ }
+ DEBUGP (("proxy responded with: [%s]\n", head));
+
+ resp = resp_new (head);
+ statcode = resp_status (resp, &message);
+ if (statcode < 0)
+ {
+ char *tms = datetime_str (time (NULL));
+ logprintf (LOG_VERBOSE, "%d\n", statcode);
+ logprintf (LOG_NOTQUIET, _("%s ERROR %d: %s.\n"), tms, statcode,
+ quotearg_style (escape_quoting_style,
+ _("Malformed status line")));
+ xfree (head);
+ return HERR;
+ }
+ xfree (hs->message);
+ hs->message = xstrdup (message);
+ resp_free (&resp);
+ xfree (head);
+ if (statcode != 200)
+ {
+ failed_tunnel:
+ logprintf (LOG_NOTQUIET, _("Proxy tunneling failed: %s"),
+ message ? quotearg_style (escape_quoting_style, message) : "?");
+ xfree (message);
+ return CONSSLERR;
+ }
+ xfree (message);
+
+ /* SOCK is now *really* connected to u->host, so update CONN
+ to reflect this. That way register_persistent will
+ register SOCK as being connected to u->host:u->port. */
+ conn = u;
+ }
+
+ if (conn->scheme == SCHEME_HTTPS)
+ {
+ if (!ssl_connect_wget (sock, u->host, NULL))
+ {
+ CLOSE_INVALIDATE (sock);
+ return CONSSLERR;
+ }
+ else if (!ssl_check_certificate (sock, u->host))
+ {
+ CLOSE_INVALIDATE (sock);
+ return VERIFCERTERR;
+ }
+ *using_ssl = true;
+ }
+#endif /* HAVE_SSL */
+ }
+ *conn_ref = conn;
+ *req_ref = req;
+ *sock_ref = sock;
+ return RETROK;
+}
+
+static uerr_t
+set_file_timestamp (struct http_stat *hs)
+{
+ bool local_dot_orig_file_exists = false;
+ char *local_filename = NULL;
+ struct stat st;
+ char buf[1024];
+
+ if (opt.backup_converted)
+ /* If -K is specified, we'll act on the assumption that it was specified
+ last time these files were downloaded as well, and instead of just
+ comparing local file X against server file X, we'll compare local
+ file X.orig (if extant, else X) against server file X. If -K
+ _wasn't_ specified last time, or the server contains files called
+ *.orig, -N will be back to not operating correctly with -k. */
+ {
+ size_t filename_len = strlen (hs->local_file);
+ char *filename_plus_orig_suffix;
+
+ if (filename_len + sizeof (ORIG_SFX) > sizeof (buf))
+ filename_plus_orig_suffix = xmalloc (filename_len + sizeof (ORIG_SFX));
+ else
+ filename_plus_orig_suffix = buf;
+
+ /* Would a single s[n]printf() call be faster? --dan
+
+ Definitely not. sprintf() is horribly slow. It's a
+ different question whether the difference between the two
+ affects a program. Usually I'd say "no", but at one
+ point I profiled Wget, and found that a measurable and
+ non-negligible amount of time was lost calling sprintf()
+ in url.c. Replacing sprintf with inline calls to
+ strcpy() and number_to_string() made a difference.
+ --hniksic */
+ memcpy (filename_plus_orig_suffix, hs->local_file, filename_len);
+ memcpy (filename_plus_orig_suffix + filename_len,
+ ORIG_SFX, sizeof (ORIG_SFX));
+
+ /* Try to stat() the .orig file. */
+ if (stat (filename_plus_orig_suffix, &st) == 0)
+ {
+ local_dot_orig_file_exists = true;
+ local_filename = filename_plus_orig_suffix;
+ }
+ }
+
+ if (!local_dot_orig_file_exists)
+ /* Couldn't stat() <file>.orig, so try to stat() <file>. */
+ if (stat (hs->local_file, &st) == 0)
+ {
+ if (local_filename != buf)
+ xfree (local_filename);
+ local_filename = hs->local_file;
+ }
+
+ if (local_filename != NULL)
+ /* There was a local file, so we'll check later to see if the version
+ the server has is the same version we already have, allowing us to
+ skip a download. */
+ {
+ if (local_filename == buf || local_filename == hs->local_file)
+ hs->orig_file_name = xstrdup (local_filename); // on stack or a copy, make a heap copy
+ else
+ hs->orig_file_name = local_filename; // was previously malloc'ed
+ hs->orig_file_size = st.st_size;
+ hs->orig_file_tstamp = st.st_mtime;
+#ifdef WINDOWS
+ /* Modification time granularity is 2 seconds for Windows, so
+ increase local time by 1 second for later comparison. */
+ ++hs->orig_file_tstamp;
+#endif
+ hs->timestamp_checked = true;
+ }
+
+ return RETROK;
+}
+
+static uerr_t
+check_file_output (const struct url *u, struct http_stat *hs,
+ struct response *resp, char *hdrval, size_t hdrsize)
+{
+ /* Determine the local filename if needed. Notice that if -O is used
+ * hstat.local_file is set by http_loop to the argument of -O. */
+ if (!hs->local_file)
+ {
+ char *local_file = NULL;
+
+ /* Honor Content-Disposition whether possible. */
+ if (!opt.content_disposition
+ || !resp_header_copy (resp, "Content-Disposition",
+ hdrval, hdrsize)
+ || !parse_content_disposition (hdrval, &local_file))
+ {
+ /* The Content-Disposition header is missing or broken.
+ * Choose unique file name according to given URL. */
+ hs->local_file = url_file_name (u, NULL);
+ }
+ else
+ {
+ DEBUGP (("Parsed filename from Content-Disposition: %s\n",
+ local_file));
+ hs->local_file = url_file_name (u, local_file);
+ }
+
+ xfree (local_file);
+ }
+
+ hs->temporary = opt.delete_after || opt.spider || !acceptable (hs->local_file);
+ if (hs->temporary)
+ {
+ char *tmp = aprintf ("%s.tmp", hs->local_file);
+ xfree (hs->local_file);
+ hs->local_file = tmp;
+ }
+
+ /* TODO: perform this check only once. */
+ if (!hs->existence_checked && file_exists_p (hs->local_file, NULL))
+ {
+ if (opt.noclobber && !opt.output_document)
+ {
+ /* If opt.noclobber is turned on and file already exists, do not
+ retrieve the file. But if the output_document was given, then this
+ test was already done and the file didn't exist. Hence the !opt.output_document */
+ return RETRUNNEEDED;
+ }
+ else if (!ALLOW_CLOBBER)
+ {
+ char *unique = unique_name_passthrough (hs->local_file);
+ if (unique != hs->local_file)
+ xfree (hs->local_file);
+ hs->local_file = unique;
+ }
+ }
+ hs->existence_checked = true;
+
+ /* Support timestamping */
+ if (opt.timestamping && !hs->timestamp_checked)
+ {
+ uerr_t timestamp_err = set_file_timestamp (hs);
+ if (timestamp_err != RETROK)
+ return timestamp_err;
+ }
+ return RETROK;
+}
+
+static uerr_t
+check_auth (const struct url *u, char *user, char *passwd, struct response *resp,
+ struct request *req, bool *ntlm_seen_ref, bool *retry,
+ bool *basic_auth_finished_ref, bool *auth_finished_ref)
+{
+ uerr_t auth_err = RETROK;
+ bool basic_auth_finished = *basic_auth_finished_ref;
+ bool auth_finished = *auth_finished_ref;
+ bool ntlm_seen = *ntlm_seen_ref;
+ char buf[256], *tmp = NULL;
+
+ *retry = false;
+
+ if (!auth_finished && (user && passwd))
+ {
+ /* IIS sends multiple copies of WWW-Authenticate, one with
+ the value "negotiate", and other(s) with data. Loop over
+ all the occurrences and pick the one we recognize. */
+ int wapos;
+ const char *www_authenticate = NULL;
+ const char *wabeg, *waend;
+ const char *digest = NULL, *basic = NULL, *ntlm = NULL;
+
+ for (wapos = 0; !ntlm
+ && (wapos = resp_header_locate (resp, "WWW-Authenticate", wapos,
+ &wabeg, &waend)) != -1;
+ ++wapos)
+ {
+ param_token name, value;
+ size_t len = waend - wabeg;
+
+ if (tmp != buf)
+ xfree (tmp);
+
+ if (len < sizeof (buf))
+ tmp = buf;
+ else
+ tmp = xmalloc (len + 1);
+
+ memcpy (tmp, wabeg, len);
+ tmp[len] = 0;
+
+ www_authenticate = tmp;
+
+ for (;!ntlm;)
+ {
+ /* extract the auth-scheme */
+ while (c_isspace (*www_authenticate)) www_authenticate++;
+ name.e = name.b = www_authenticate;
+ while (*name.e && !c_isspace (*name.e)) name.e++;
+
+ if (name.b == name.e)
+ break;
+
+ DEBUGP (("Auth scheme found '%.*s'\n", (int) (name.e - name.b), name.b));
+
+ if (known_authentication_scheme_p (name.b, name.e))
+ {
+ if (BEGINS_WITH (name.b, "NTLM"))
+ {
+ ntlm = name.b;
+ break; /* this is the most secure challenge, stop here */
+ }
+ else if (!digest && BEGINS_WITH (name.b, "Digest"))
+ digest = name.b;
+ else if (!basic && BEGINS_WITH (name.b, "Basic"))
+ basic = name.b;
+ }
+
+ /* now advance over the auth-params */
+ www_authenticate = name.e;
+ DEBUGP (("Auth param list '%s'\n", www_authenticate));
+ while (extract_param (&www_authenticate, &name, &value, ',', NULL) && name.b && value.b)
+ {
+ DEBUGP (("Auth param %.*s=%.*s\n",
+ (int) (name.e - name.b), name.b, (int) (value.e - value.b), value.b));
+ }
+ }
+ }
+
+ if (!basic && !digest && !ntlm)
+ {
+ /* If the authentication header is missing or
+ unrecognized, there's no sense in retrying. */
+ logputs (LOG_NOTQUIET, _("Unknown authentication scheme.\n"));
+ }
+ else if (!basic_auth_finished
+ || !basic)
+ {
+ char *pth = url_full_path (u);
+ const char *value;
+ uerr_t *auth_stat;
+ auth_stat = xmalloc (sizeof (uerr_t));
+ *auth_stat = RETROK;
+
+ if (ntlm)
+ www_authenticate = ntlm;
+ else if (digest)
+ www_authenticate = digest;
+ else
+ www_authenticate = basic;
+
+ logprintf (LOG_NOTQUIET, _("Authentication selected: %s\n"), www_authenticate);
+
+ value = create_authorization_line (www_authenticate,
+ user, passwd,
+ request_method (req),
+ pth,
+ &auth_finished,
+ auth_stat);
+
+ auth_err = *auth_stat;
+ xfree (auth_stat);
+ xfree (pth);
+ if (auth_err == RETROK)
+ {
+ request_set_header (req, "Authorization", value, rel_value);
+
+ if (BEGINS_WITH (www_authenticate, "NTLM"))
+ ntlm_seen = true;
+ else if (!u->user && BEGINS_WITH (www_authenticate, "Basic"))
+ {
+ /* Need to register this host as using basic auth,
+ * so we automatically send creds next time. */
+ register_basic_auth_host (u->host);
+ }
+
+ *retry = true;
+ goto cleanup;
+ }
+ else
+ {
+ /* Creating the Authorization header went wrong */
+ xfree (value);
+ }
+ }
+ else
+ {
+ /* We already did Basic auth, and it failed. Gotta
+ * give up. */
+ }
+ }
+
+ cleanup:
+ if (tmp != buf)
+ xfree (tmp);
+ *ntlm_seen_ref = ntlm_seen;
+ *basic_auth_finished_ref = basic_auth_finished;
+ *auth_finished_ref = auth_finished;
+ return auth_err;
+}
+
+static uerr_t
+open_output_stream (struct http_stat *hs, int count, FILE **fp)
+{
+/* 2005-06-17 SMS.
+ For VMS, define common fopen() optional arguments.
+*/
+#ifdef __VMS
+# define FOPEN_OPT_ARGS "fop=sqo", "acc", acc_cb, &open_id
+# define FOPEN_BIN_FLAG 3
+#else /* def __VMS */
+# define FOPEN_BIN_FLAG true
+#endif /* def __VMS [else] */
+
+ /* Open the local file. */
+ if (!output_stream)
+ {
+ mkalldirs (hs->local_file);
+ if (opt.backups)
+ rotate_backups (hs->local_file);
+ if (hs->restval)
+ {
+#ifdef __VMS
+ int open_id;
+
+ open_id = 21;
+ *fp = fopen (hs->local_file, "ab", FOPEN_OPT_ARGS);
+#else /* def __VMS */
+ *fp = fopen (hs->local_file, "ab");
+#endif /* def __VMS [else] */
+ }
+ else if (ALLOW_CLOBBER || count > 0)
+ {
+ if (opt.unlink_requested && file_exists_p (hs->local_file, NULL))
+ {
+ if (unlink (hs->local_file) < 0)
+ {
+ logprintf (LOG_NOTQUIET, "%s: %s\n", hs->local_file,
+ strerror (errno));
+ return UNLINKERR;
+ }
+ }
+
+#ifdef __VMS
+ int open_id;
+
+ open_id = 22;
+ *fp = fopen (hs->local_file, "wb", FOPEN_OPT_ARGS);
+#else /* def __VMS */
+ if (hs->temporary)
+ {
+ *fp = fdopen (open (hs->local_file, O_BINARY | O_CREAT | O_TRUNC | O_WRONLY, S_IRUSR | S_IWUSR), "wb");
+ }
+ else
+ {
+ *fp = fopen (hs->local_file, "wb");
+ }
+
+#endif /* def __VMS [else] */
+ }
+ else
+ {
+ *fp = fopen_excl (hs->local_file, FOPEN_BIN_FLAG);
+ if (!*fp && errno == EEXIST)
+ {
+ /* We cannot just invent a new name and use it (which is
+ what functions like unique_create typically do)
+ because we told the user we'd use this name.
+ Instead, return and retry the download. */
+ logprintf (LOG_NOTQUIET,
+ _("%s has sprung into existence.\n"),
+ hs->local_file);
+ return FOPEN_EXCL_ERR;
+ }
+ }
+ if (!*fp)
+ {
+ logprintf (LOG_NOTQUIET, "%s: %s\n", hs->local_file, strerror (errno));
+ return FOPENERR;
+ }
+ }
+ else
+ *fp = output_stream;
+
+ /* Print fetch message, if opt.verbose. */
+ logprintf (LOG_VERBOSE, _("Saving to: %s\n"),
+ HYPHENP (hs->local_file) ? quote ("STDOUT") : quote (hs->local_file));
+
+ return RETROK;
+}
+
+/* Set proper type flags based on type string. */
+static void
+set_content_type (int *dt, const char *type)
+{
+ /* If content-type is not given, assume text/html. This is because
+ of the multitude of broken CGI's that "forget" to generate the
+ content-type. */
+ if (!type ||
+ 0 == c_strcasecmp (type, TEXTHTML_S) ||
+ 0 == c_strcasecmp (type, TEXTXHTML_S))
+ *dt |= TEXTHTML;
+ else
+ *dt &= ~TEXTHTML;
+
+ if (type &&
+ 0 == c_strcasecmp (type, TEXTCSS_S))
+ *dt |= TEXTCSS;
+ else
+ *dt &= ~TEXTCSS;
+}
+
+#ifdef HAVE_METALINK
+/* Will return proper metalink_t structure if enough data was found in
+ http response resp. Otherwise returns NULL.
+ Two exit points: one for success and one for failure. */
+static metalink_t *
+metalink_from_http (const struct response *resp, const struct http_stat *hs,
+ const struct url *u)
+{
+ metalink_t *metalink = NULL;
+ metalink_file_t *mfile = xnew0 (metalink_file_t);
+ const char *val_beg, *val_end;
+ int res_count = 0, meta_count = 0, hash_count = 0, sig_count = 0, i;
+
+ DEBUGP (("Checking for Metalink in HTTP response\n"));
+
+ /* Initialize metalink file for our simple use case. */
+ if (hs->local_file)
+ mfile->name = xstrdup (hs->local_file);
+ else
+ mfile->name = url_file_name (u, NULL);
+
+ /* Begin with 1-element array (for 0-termination). */
+ mfile->checksums = xnew0 (metalink_checksum_t *);
+ mfile->resources = xnew0 (metalink_resource_t *);
+ mfile->metaurls = xnew0 (metalink_metaurl_t *);
+
+ /* Process the Content-Type header. */
+ if (resp_header_locate (resp, "Content-Type", 0, &val_beg, &val_end) != -1)
+ {
+ metalink_metaurl_t murl = {0};
+
+ const char *type_beg, *type_end;
+ char *typestr = NULL;
+ char *namestr = NULL;
+ size_t type_len;
+
+ DEBUGP (("Processing Content-Type header...\n"));
+
+ /* Find beginning of type. */
+ type_beg = val_beg;
+ while (type_beg < val_end && c_isspace (*type_beg))
+ type_beg++;
+
+ /* Find end of type. */
+ type_end = type_beg + 1;
+ while (type_end < val_end &&
+ *type_end != ';' &&
+ *type_end != ' ' &&
+ *type_end != '\r' &&
+ *type_end != '\n')
+ type_end++;
+
+ if (type_beg >= val_end || type_end > val_end)
+ {
+ DEBUGP (("Invalid Content-Type header. Ignoring.\n"));
+ goto skip_content_type;
+ }
+
+ type_len = type_end - type_beg;
+ typestr = xstrndup (type_beg, type_len);
+
+ DEBUGP (("Content-Type: %s\n", typestr));
+
+ if (strcmp (typestr, "application/metalink4+xml"))
+ {
+ xfree (typestr);
+ goto skip_content_type;
+ }
+
+ /*
+ Valid ranges for the "pri" attribute are from
+ 1 to 999999. Mirror servers with a lower value of the "pri"
+ attribute have a higher priority, while mirrors with an undefined
+ "pri" attribute are considered to have a value of 999999, which is
+ the lowest priority.
+
+ rfc6249 section 3.1
+ */
+ murl.priority = DEFAULT_PRI;
+
+ murl.mediatype = typestr;
+ typestr = NULL;
+
+ if (opt.content_disposition
+ && resp_header_locate (resp, "Content-Disposition", 0, &val_beg, &val_end) != -1)
+ {
+ find_key_value (val_beg, val_end, "filename", &namestr);
+ murl.name = namestr;
+ namestr = NULL;
+ }
+
+ murl.url = xstrdup (u->url);
+
+ DEBUGP (("URL=%s\n", murl.url));
+ DEBUGP (("MEDIATYPE=%s\n", murl.mediatype));
+ DEBUGP (("NAME=%s\n", murl.name ? murl.name : ""));
+ DEBUGP (("PRIORITY=%d\n", murl.priority));
+
+ /* 1 slot from new resource, 1 slot for null-termination. */
+ mfile->metaurls = xrealloc (mfile->metaurls,
+ sizeof (metalink_metaurl_t *) * (meta_count + 2));
+ mfile->metaurls[meta_count] = xnew0 (metalink_metaurl_t);
+ *mfile->metaurls[meta_count] = murl;
+ meta_count++;
+ }
+skip_content_type:
+
+ /* Find all Link headers. */
+ for (i = 0;
+ (i = resp_header_locate (resp, "Link", i, &val_beg, &val_end)) != -1;
+ i++)
+ {
+ char *rel = NULL, *reltype = NULL;
+ char *urlstr = NULL;
+ const char *url_beg, *url_end, *attrs_beg;
+ size_t url_len;
+
+ /* Sample Metalink Link headers:
+
+ Link: <http://www2.example.com/dir1/dir2/dir3/dir4/dir5/example.ext>;
+ rel=duplicate; pri=1; pref; geo=gb; depth=4
+
+ Link: <http://example.com/example.ext.asc>; rel=describedby;
+ type="application/pgp-signature"
+ */
+
+ /* Find beginning of URL. */
+ url_beg = val_beg;
+ while (url_beg < val_end - 1 && c_isspace (*url_beg))
+ url_beg++;
+
+ /* Find end of URL. */
+ /* The convention here is that end ptr points to one element after
+ end of string. In this case, it should be pointing to the '>', which
+ is one element after end of actual URL. Therefore, it should never point
+ to val_end, which is one element after entire header value string. */
+ url_end = url_beg + 1;
+ while (url_end < val_end - 1 && *url_end != '>')
+ url_end++;
+
+ if (url_beg >= val_end || url_end >= val_end ||
+ *url_beg != '<' || *url_end != '>')
+ {
+ DEBUGP (("This is not a valid Link header. Ignoring.\n"));
+ continue;
+ }
+
+ /* Skip <. */
+ url_beg++;
+ url_len = url_end - url_beg;
+
+ /* URL found. Now handle the attributes. */
+ attrs_beg = url_end + 1;
+
+ /* First we need to find out what type of link it is. Currently, we
+ support rel=duplicate and rel=describedby. */
+ if (!find_key_value (attrs_beg, val_end, "rel", &rel))
+ {
+ DEBUGP (("No rel value in Link header, skipping.\n"));
+ continue;
+ }
+
+ urlstr = xstrndup (url_beg, url_len);
+ DEBUGP (("URL=%s\n", urlstr));
+ DEBUGP (("rel=%s\n", rel));
+
+ if (!strcmp (rel, "describedby"))
+ find_key_value (attrs_beg, val_end, "type", &reltype);
+
+ /* Handle signatures.
+ Libmetalink only supports one signature per file. Therefore we stop
+ as soon as we successfully get first supported signature. */
+ if (sig_count == 0 &&
+ reltype && !strcmp (reltype, "application/pgp-signature"))
+ {
+ /* Download the signature to a temporary file. */
+ FILE *_output_stream = output_stream;
+ bool _output_stream_regular = output_stream_regular;
+
+ output_stream = tmpfile ();
+ if (output_stream)
+ {
+ struct iri *iri = iri_new ();
+ struct url *url;
+ int url_err;
+
+ set_uri_encoding (iri, opt.locale, true);
+ url = url_parse (urlstr, &url_err, iri, false);
+
+ if (!url)
+ {
+ char *error = url_error (urlstr, url_err);
+ logprintf (LOG_NOTQUIET, _("When downloading signature:\n"
+ "%s: %s.\n"), urlstr, error);
+ xfree (error);
+ iri_free (iri);
+ }
+ else
+ {
+ /* Avoid recursive Metalink from HTTP headers. */
+ bool _metalink_http = opt.metalink_over_http;
+ uerr_t retr_err;
+
+ opt.metalink_over_http = false;
+ retr_err = retrieve_url (url, urlstr, NULL, NULL,
+ NULL, NULL, false, iri, false);
+ opt.metalink_over_http = _metalink_http;
+
+ url_free (url);
+ iri_free (iri);
+
+ if (retr_err == RETROK)
+ {
+ /* Signature is in the temporary file. Read it into
+ metalink resource structure. */
+ metalink_signature_t msig;
+ size_t siglen;
+
+ fseek (output_stream, 0, SEEK_END);
+ siglen = ftell (output_stream);
+ fseek (output_stream, 0, SEEK_SET);
+
+ DEBUGP (("siglen=%lu\n", siglen));
+
+ msig.signature = xmalloc (siglen + 1);
+ if (fread (msig.signature, siglen, 1, output_stream) != 1)
+ {
+ logputs (LOG_NOTQUIET,
+ _("Unable to read signature content from "
+ "temporary file. Skipping.\n"));
+ xfree (msig.signature);
+ }
+ else
+ {
+ msig.signature[siglen] = '\0'; /* Just in case. */
+ msig.mediatype = xstrdup ("application/pgp-signature");
+
+ DEBUGP (("Signature (%s):\n%s\n",
+ msig.mediatype, msig.signature));
+
+ mfile->signature = xnew (metalink_signature_t);
+ *mfile->signature = msig;
+
+ sig_count++;
+ }
+ }
+ }
+ fclose (output_stream);
+ }
+ else
+ {
+ logputs (LOG_NOTQUIET, _("Could not create temporary file. "
+ "Skipping signature download.\n"));
+ }
+ output_stream_regular = _output_stream_regular;
+ output_stream = _output_stream;
+ } /* Iterate over signatures. */
+
+ /* Handle Metalink resources. */
+ else if (!strcmp (rel, "duplicate"))
+ {
+ metalink_resource_t mres = {0};
+ char *pristr;
+
+ /*
+ Valid ranges for the "pri" attribute are from
+ 1 to 999999. Mirror servers with a lower value of the "pri"
+ attribute have a higher priority, while mirrors with an undefined
+ "pri" attribute are considered to have a value of 999999, which is
+ the lowest priority.
+
+ rfc6249 section 3.1
+ */
+ mres.priority = DEFAULT_PRI;
+ if (find_key_value (url_end, val_end, "pri", &pristr))
+ {
+ long pri;
+ char *end_pristr;
+ /* Do not care for errno since 0 is error in this case. */
+ pri = strtol (pristr, &end_pristr, 10);
+ if (end_pristr != pristr + strlen (pristr) ||
+ !VALID_PRI_RANGE (pri))
+ {
+ /* This is against the specification, so let's inform the user. */
+ logprintf (LOG_NOTQUIET,
+ _("Invalid pri value. Assuming %d.\n"),
+ DEFAULT_PRI);
+ }
+ else
+ mres.priority = pri;
+ xfree (pristr);
+ }
+
+ switch (url_scheme (urlstr))
+ {
+ case SCHEME_HTTP:
+ mres.type = xstrdup ("http");
+ break;
+#ifdef HAVE_SSL
+ case SCHEME_HTTPS:
+ mres.type = xstrdup ("https");
+ break;
+ case SCHEME_FTPS:
+ mres.type = xstrdup ("ftps");
+ break;
+#endif
+ case SCHEME_FTP:
+ mres.type = xstrdup ("ftp");
+ break;
+ default:
+ DEBUGP (("Unsupported url scheme in %s. Skipping resource.\n", urlstr));
+ }
+
+ if (mres.type)
+ {
+ DEBUGP (("TYPE=%s\n", mres.type));
+
+ /* At this point we have validated the new resource. */
+
+ find_key_value (url_end, val_end, "geo", &mres.location);
+
+ mres.url = urlstr;
+ urlstr = NULL;
+
+ mres.preference = 0;
+ if (has_key (url_end, val_end, "pref"))
+ {
+ DEBUGP (("This resource has preference\n"));
+ mres.preference = 1;
+ }
+
+ /* 1 slot from new resource, 1 slot for null-termination. */
+ mfile->resources = xrealloc (mfile->resources,
+ sizeof (metalink_resource_t *) * (res_count + 2));
+ mfile->resources[res_count] = xnew0 (metalink_resource_t);
+ *mfile->resources[res_count] = mres;
+ res_count++;
+ }
+ } /* Handle resource link (rel=duplicate). */
+
+ /* Handle Metalink/XML resources. */
+ else if (reltype && !strcmp (reltype, "application/metalink4+xml"))
+ {
+ metalink_metaurl_t murl = {0};
+ char *pristr;
+
+ /*
+ Valid ranges for the "pri" attribute are from
+ 1 to 999999. Mirror servers with a lower value of the "pri"
+ attribute have a higher priority, while mirrors with an undefined
+ "pri" attribute are considered to have a value of 999999, which is
+ the lowest priority.
+
+ rfc6249 section 3.1
+ */
+ murl.priority = DEFAULT_PRI;
+ if (find_key_value (url_end, val_end, "pri", &pristr))
+ {
+ long pri;
+ char *end_pristr;
+ /* Do not care for errno since 0 is error in this case. */
+ pri = strtol (pristr, &end_pristr, 10);
+ if (end_pristr != pristr + strlen (pristr) ||
+ !VALID_PRI_RANGE (pri))
+ {
+ /* This is against the specification, so let's inform the user. */
+ logprintf (LOG_NOTQUIET,
+ _("Invalid pri value. Assuming %d.\n"),
+ DEFAULT_PRI);
+ }
+ else
+ murl.priority = pri;
+ xfree (pristr);
+ }
+
+ murl.mediatype = xstrdup (reltype);
+
+ DEBUGP (("MEDIATYPE=%s\n", murl.mediatype));
+
+ /* At this point we have validated the new resource. */
+
+ find_key_value (url_end, val_end, "name", &murl.name);
+
+ murl.url = urlstr;
+ urlstr = NULL;
+
+ /* 1 slot from new resource, 1 slot for null-termination. */
+ mfile->metaurls = xrealloc (mfile->metaurls,
+ sizeof (metalink_metaurl_t *) * (meta_count + 2));
+ mfile->metaurls[meta_count] = xnew0 (metalink_metaurl_t);
+ *mfile->metaurls[meta_count] = murl;
+ meta_count++;
+ } /* Handle resource link (rel=describedby). */
+ else
+ DEBUGP (("This link header was not used for Metalink\n"));
+
+ xfree (urlstr);
+ xfree (reltype);
+ xfree (rel);
+ } /* Iterate over link headers. */
+
+ /* Null-terminate resources array. */
+ mfile->resources[res_count] = 0;
+ mfile->metaurls[meta_count] = 0;
+
+ if (res_count == 0 && meta_count == 0)
+ {
+ DEBUGP (("No valid metalink references found.\n"));
+ goto fail;
+ }
+
+ /* Find all Digest headers. */
+ for (i = 0;
+ (i = resp_header_locate (resp, "Digest", i, &val_beg, &val_end)) != -1;
+ i++)
+ {
+ const char *dig_pos;
+ char *dig_type, *dig_hash;
+
+ /* Each Digest header can include multiple hashes. Example:
+ Digest: SHA=thvDyvhfIqlvFe+A9MYgxAfm1q5=,unixsum=30637
+ Digest: md5=HUXZLQLMuI/KZ5KDcJPcOA==
+ */
+ for (dig_pos = val_beg;
+ (dig_pos = find_key_values (dig_pos, val_end, &dig_type, &dig_hash));
+ dig_pos++)
+ {
+ /* The hash here is assumed to be base64. We need the hash in hex.
+ Therefore we convert: base64 -> binary -> hex. */
+ const size_t dig_hash_str_len = strlen (dig_hash);
+ char bin_hash[256];
+ ssize_t hash_bin_len;
+
+ // there is no hash with that size
+ if (dig_hash_str_len >= sizeof (bin_hash))
+ {
+ DEBUGP (("Hash too long, ignored.\n"));
+ xfree (dig_type);
+ xfree (dig_hash);
+ continue;
+ }
+
+ hash_bin_len = wget_base64_decode (dig_hash, bin_hash, dig_hash_str_len * 3 / 4 + 1);
+
+ /* Detect malformed base64 input. */
+ if (hash_bin_len < 0)
+ {
+ DEBUGP (("Malformed base64 input, ignored.\n"));
+ xfree (dig_type);
+ xfree (dig_hash);
+ continue;
+ }
+
+ /* One slot for me, one for zero-termination. */
+ mfile->checksums =
+ xrealloc (mfile->checksums,
+ sizeof (metalink_checksum_t *) * (hash_count + 2));
+ mfile->checksums[hash_count] = xnew (metalink_checksum_t);
+ mfile->checksums[hash_count]->type = dig_type;
+
+ mfile->checksums[hash_count]->hash = xmalloc ((size_t)hash_bin_len * 2 + 1);
+ wg_hex_to_string (mfile->checksums[hash_count]->hash, bin_hash, (size_t)hash_bin_len);
+
+ xfree (dig_hash);
+
+ hash_count++;
+ }
+ }
+
+ /* Zero-terminate checksums array. */
+ mfile->checksums[hash_count] = 0;
+
+ /*
+ If Instance Digests are not provided by the Metalink servers, the
+ Link header fields pertaining to this specification MUST be ignored.
+
+ rfc6249 section 6
+ */
+ if (res_count && hash_count == 0)
+ {
+ logputs (LOG_VERBOSE,
+ _("Could not find acceptable digest for Metalink resources.\n"
+ "Ignoring them.\n"));
+ goto fail;
+ }
+
+ /* Metalink data is OK. Now we just need to sort the resources based
+ on their priorities, preference, and perhaps location. */
+ stable_sort (mfile->resources, res_count, sizeof (metalink_resource_t *), metalink_res_cmp);
+ stable_sort (mfile->metaurls, meta_count, sizeof (metalink_metaurl_t *), metalink_meta_cmp);
+
+ /* Restore sensible preference values (in case someone cares to look). */
+ for (i = 0; i < res_count; ++i)
+ mfile->resources[i]->preference = 1000000 - mfile->resources[i]->priority;
+
+ metalink = xnew0 (metalink_t);
+ metalink->files = xmalloc (sizeof (metalink_file_t *) * 2);
+ metalink->files[0] = mfile;
+ metalink->files[1] = 0;
+ metalink->origin = xstrdup (u->url);
+ metalink->version = METALINK_VERSION_4;
+ /* Leave other fields set to 0. */
+
+ return metalink;
+
+fail:
+ /* Free all allocated memory. */
+ if (metalink)
+ metalink_delete (metalink);
+ else
+ metalink_file_delete (mfile);
+ return NULL;
+}
+#endif /* HAVE_METALINK */
+
+/* Retrieve a document through HTTP protocol. It recognizes status
+ code, and correctly handles redirections. It closes the network
+ socket. If it receives an error from the functions below it, it
+ will print it if there is enough information to do so (almost
+ always), returning the error to the caller (i.e. http_loop).
+
+ Various HTTP parameters are stored to hs.
+
+ If PROXY is non-NULL, the connection will be made to the proxy
+ server, and u->url will be requested. */
+static uerr_t
+gethttp (const struct url *u, struct url *original_url, struct http_stat *hs,
+ int *dt, struct url *proxy, struct iri *iri, int count)
+{
+ struct request *req = NULL;
+
+ char *type = NULL;
+ char *user, *passwd;
+ char *proxyauth;
+ int statcode;
+ int write_error;
+ wgint contlen, contrange;
+ const struct url *conn;
+ FILE *fp;
+ int err;
+ uerr_t retval;
+#ifdef HAVE_HSTS
+#ifdef TESTING
+ /* we don't link against main.o when we're testing */
+ hsts_store_t hsts_store = NULL;
+#else
+ extern hsts_store_t hsts_store;
+#endif
+ const char *hsts_params;
+ time_t max_age;
+ bool include_subdomains;
+#endif
+
+ int sock = -1;
+
+ /* Set to 1 when the authorization has already been sent and should
+ not be tried again. */
+ bool auth_finished = false;
+
+ /* Set to 1 when just globally-set Basic authorization has been sent;
+ * should prevent further Basic negotiations, but not other
+ * mechanisms. */
+ bool basic_auth_finished = false;
+
+ /* Whether NTLM authentication is used for this request. */
+ bool ntlm_seen = false;
+
+ /* Whether our connection to the remote host is through SSL. */
+ bool using_ssl = false;
+
+ /* Whether a HEAD request will be issued (as opposed to GET or
+ POST). */
+ bool head_only = !!(*dt & HEAD_ONLY);
+
+ /* Whether conditional get request will be issued. */
+ bool cond_get = !!(*dt & IF_MODIFIED_SINCE);
+
+#ifdef HAVE_METALINK
+ /* Are we looking for metalink info in HTTP headers? */
+ bool metalink = !!(*dt & METALINK_METADATA);
+#endif
+
+ char *head = NULL;
+ struct response *resp = NULL;
+ char hdrval[512];
+ char *message = NULL;
+
+ /* Declare WARC variables. */
+ bool warc_enabled = (opt.warc_filename != NULL);
+ FILE *warc_tmp = NULL;
+ char warc_timestamp_str [21];
+ char warc_request_uuid [48];
+ ip_address warc_ip_buf, *warc_ip = NULL;
+ off_t warc_payload_offset = -1;
+
+ /* Whether this connection will be kept alive after the HTTP request
+ is done. */
+ bool keep_alive;
+
+ /* Is the server using the chunked transfer encoding? */
+ bool chunked_transfer_encoding = false;
+
+ /* Whether keep-alive should be inhibited. */
+ bool inhibit_keep_alive =
+ !opt.http_keep_alive || opt.ignore_length;
+
+ /* Headers sent when using POST. */
+ wgint body_data_size = 0;
+
+#ifdef HAVE_SSL
+ if (u->scheme == SCHEME_HTTPS)
+ {
+ /* Initialize the SSL context. After this has once been done,
+ it becomes a no-op. */
+ if (!ssl_init ())
+ {
+ scheme_disable (SCHEME_HTTPS);
+ logprintf (LOG_NOTQUIET,
+ _("Disabling SSL due to encountered errors.\n"));
+ retval = SSLINITFAILED;
+ goto cleanup;
+ }
+ }
+#endif /* HAVE_SSL */
+
+ /* Initialize certain elements of struct http_stat.
+ * Since this function is called in a loop, we have to xfree certain
+ * members. */
+ hs->len = 0;
+ hs->contlen = -1;
+ hs->res = -1;
+ xfree (hs->rderrmsg);
+ xfree (hs->newloc);
+ xfree (hs->remote_time);
+ xfree (hs->error);
+ xfree (hs->message);
+ hs->local_encoding = ENC_NONE;
+ hs->remote_encoding = ENC_NONE;
+
+ conn = u;
+
+ {
+ uerr_t ret;
+ req = initialize_request (u, hs, dt, proxy, inhibit_keep_alive,
+ &basic_auth_finished, &body_data_size,
+ &user, &passwd, &ret);
+ if (req == NULL)
+ {
+ retval = ret;
+ goto cleanup;
+ }
+ }
+ retry_with_auth:
+ /* We need to come back here when the initial attempt to retrieve
+ without authorization header fails. (Expected to happen at least
+ for the Digest authorization scheme.) */
+
+ if (opt.cookies)
+ request_set_header (req, "Cookie",
+ cookie_header (wget_cookie_jar,
+ u->host, u->port, u->path,
+#ifdef HAVE_SSL
+ u->scheme == SCHEME_HTTPS
+#else
+ 0
+#endif
+ ),
+ rel_value);
+
+ /* Add the user headers. */
+ if (opt.user_headers)
+ {
+ int i;
+ for (i = 0; opt.user_headers[i]; i++)
+ request_set_user_header (req, opt.user_headers[i]);
+ }
+
+ proxyauth = NULL;
+ if (proxy)
+ {
+ conn = proxy;
+ initialize_proxy_configuration (u, req, proxy, &proxyauth);
+ }
+ keep_alive = true;
+
+ /* Establish the connection. */
+ if (inhibit_keep_alive)
+ keep_alive = false;
+
+ {
+ uerr_t conn_err = establish_connection (u, &conn, hs, proxy, &proxyauth, &req,
+ &using_ssl, inhibit_keep_alive, &sock);
+ if (conn_err != RETROK)
+ {
+ retval = conn_err;
+ goto cleanup;
+ }
+ }
+
+ /* Open the temporary file where we will write the request. */
+ if (warc_enabled)
+ {
+ warc_tmp = warc_tempfile ();
+ if (warc_tmp == NULL)
+ {
+ CLOSE_INVALIDATE (sock);
+ retval = WARC_TMP_FOPENERR;
+ goto cleanup;
+ }
+
+ if (! proxy)
+ {
+ warc_ip = &warc_ip_buf;
+ socket_ip_address (sock, warc_ip, ENDPOINT_PEER);
+ }
+ }
+
+ /* Send the request to server. */
+ write_error = request_send (req, sock, warc_tmp);
+
+ if (write_error >= 0)
+ {
+ if (opt.body_data)
+ {
+ DEBUGP (("[BODY data: %s]\n", opt.body_data));
+ write_error = fd_write (sock, opt.body_data, body_data_size, -1);
+ if (write_error >= 0 && warc_tmp != NULL)
+ {
+ int warc_tmp_written;
+
+ /* Remember end of headers / start of payload. */
+ warc_payload_offset = ftello (warc_tmp);
+
+ /* Write a copy of the data to the WARC record. */
+ warc_tmp_written = fwrite (opt.body_data, 1, body_data_size, warc_tmp);
+ if (warc_tmp_written != body_data_size)
+ write_error = -2;
+ }
+ }
+ else if (opt.body_file && body_data_size != 0)
+ {
+ if (warc_tmp != NULL)
+ /* Remember end of headers / start of payload */
+ warc_payload_offset = ftello (warc_tmp);
+
+ write_error = body_file_send (sock, opt.body_file, body_data_size, warc_tmp);
+ }
+ }
+
+ if (write_error < 0)
+ {
+ CLOSE_INVALIDATE (sock);
+
+ if (warc_tmp != NULL)
+ fclose (warc_tmp);
+
+ if (write_error == -2)
+ retval = WARC_TMP_FWRITEERR;
+ else
+ retval = WRITEFAILED;
+ goto cleanup;
+ }
+ logprintf (LOG_VERBOSE, _("%s request sent, awaiting response... "),
+ proxy ? "Proxy" : "HTTP");
+ contlen = -1;
+ contrange = 0;
+ *dt &= ~RETROKF;
+
+
+ if (warc_enabled)
+ {
+ bool warc_result;
+
+ /* Generate a timestamp and uuid for this request. */
+ warc_timestamp (warc_timestamp_str, sizeof (warc_timestamp_str));
+ warc_uuid_str (warc_request_uuid, sizeof (warc_request_uuid));
+
+ /* Create a request record and store it in the WARC file. */
+ warc_result = warc_write_request_record (u->url, warc_timestamp_str,
+ warc_request_uuid, warc_ip,
+ warc_tmp, warc_payload_offset);
+ if (! warc_result)
+ {
+ CLOSE_INVALIDATE (sock);
+ retval = WARC_ERR;
+ goto cleanup;
+ }
+
+ /* warc_write_request_record has also closed warc_tmp. */
+ }
+
+ /* Repeat while we receive a 10x response code. */
+ {
+ bool _repeat;
+
+ do
+ {
+ head = read_http_response_head (sock);
+ if (!head)
+ {
+ if (errno == 0)
+ {
+ logputs (LOG_NOTQUIET, _("No data received.\n"));
+ CLOSE_INVALIDATE (sock);
+ retval = HEOF;
+ }
+ else
+ {
+ logprintf (LOG_NOTQUIET, _("Read error (%s) in headers.\n"),
+ fd_errstr (sock));
+ CLOSE_INVALIDATE (sock);
+ retval = HERR;
+ }
+ goto cleanup;
+ }
+ DEBUGP (("\n---response begin---\n%s---response end---\n", head));
+
+ resp = resp_new (head);
+
+ /* Check for status line. */
+ xfree (message);
+ statcode = resp_status (resp, &message);
+ if (statcode < 0)
+ {
+ char *tms = datetime_str (time (NULL));
+ logprintf (LOG_VERBOSE, "%d\n", statcode);
+ logprintf (LOG_NOTQUIET, _("%s ERROR %d: %s.\n"), tms, statcode,
+ quotearg_style (escape_quoting_style,
+ _("Malformed status line")));
+ CLOSE_INVALIDATE (sock);
+ retval = HERR;
+ goto cleanup;
+ }
+
+ if (H_10X (statcode))
+ {
+ xfree (head);
+ resp_free (&resp);
+ _repeat = true;
+ DEBUGP (("Ignoring response\n"));
+ }
+ else
+ {
+ _repeat = false;
+ }
+ }
+ while (_repeat);
+ }
+
+ xfree (hs->message);
+ hs->message = xstrdup (message);
+ if (!opt.server_response)
+ logprintf (LOG_VERBOSE, "%2d %s\n", statcode,
+ message ? quotearg_style (escape_quoting_style, message) : "");
+ else
+ {
+ logprintf (LOG_VERBOSE, "\n");
+ print_server_response (resp, " ");
+ }
+
+ if (!opt.ignore_length
+ && resp_header_copy (resp, "Content-Length", hdrval, sizeof (hdrval)))
+ {
+ wgint parsed;
+ errno = 0;
+ parsed = str_to_wgint (hdrval, NULL, 10);
+ if (parsed == WGINT_MAX && errno == ERANGE)
+ {
+ /* Out of range.
+ #### If Content-Length is out of range, it most likely
+ means that the file is larger than 2G and that we're
+ compiled without LFS. In that case we should probably
+ refuse to even attempt to download the file. */
+ contlen = -1;
+ }
+ else if (parsed < 0)
+ {
+ /* Negative Content-Length; nonsensical, so we can't
+ assume any information about the content to receive. */
+ contlen = -1;
+ }
+ else
+ contlen = parsed;
+ }
+
+ /* Check for keep-alive related responses. */
+ if (!inhibit_keep_alive)
+ {
+ if (resp_header_copy (resp, "Connection", hdrval, sizeof (hdrval)))
+ {
+ if (0 == c_strcasecmp (hdrval, "Close"))
+ keep_alive = false;
+ }
+ }
+
+ chunked_transfer_encoding = false;
+ if (resp_header_copy (resp, "Transfer-Encoding", hdrval, sizeof (hdrval))
+ && 0 == c_strcasecmp (hdrval, "chunked"))
+ chunked_transfer_encoding = true;
+
+ /* Handle (possibly multiple instances of) the Set-Cookie header. */
+ if (opt.cookies)
+ {
+ int scpos;
+ const char *scbeg, *scend;
+ /* The jar should have been created by now. */
+ assert (wget_cookie_jar != NULL);
+ for (scpos = 0;
+ (scpos = resp_header_locate (resp, "Set-Cookie", scpos,
+ &scbeg, &scend)) != -1;
+ ++scpos)
+ {
+ char buf[1024], *set_cookie;
+ size_t len = scend - scbeg;
+
+ if (len < sizeof (buf))
+ set_cookie = buf;
+ else
+ set_cookie = xmalloc (len + 1);
+
+ memcpy (set_cookie, scbeg, len);
+ set_cookie[len] = 0;
+
+ cookie_handle_set_cookie (wget_cookie_jar, u->host, u->port,
+ u->path, set_cookie);
+
+ if (set_cookie != buf)
+ xfree (set_cookie);
+ }
+ }
+
+ if (keep_alive)
+ /* The server has promised that it will not close the connection
+ when we're done. This means that we can register it. */
+ register_persistent (conn->host, conn->port, sock, using_ssl);
+
+#ifdef HAVE_METALINK
+ /* We need to check for the Metalink data in the very first response
+ we get from the server (before redirections, authorization, etc.). */
+ if (metalink)
+ {
+ hs->metalink = metalink_from_http (resp, hs, u);
+ /* Bugfix: hs->local_file is NULL (opt.content_disposition). */
+ if (!hs->local_file && hs->metalink && hs->metalink->origin)
+ hs->local_file = xstrdup (hs->metalink->origin);
+ xfree (hs->message);
+ retval = RETR_WITH_METALINK;
+ CLOSE_FINISH (sock);
+ goto cleanup;
+ }
+#endif
+
+ if (statcode == HTTP_STATUS_UNAUTHORIZED)
+ {
+ /* Authorization is required. */
+ uerr_t auth_err = RETROK;
+ bool retry;
+ /* Normally we are not interested in the response body.
+ But if we are writing a WARC file we are: we like to keep everything. */
+ if (warc_enabled)
+ {
+ int _err;
+ type = resp_header_strdup (resp, "Content-Type");
+ _err = read_response_body (hs, sock, NULL, contlen, 0,
+ chunked_transfer_encoding,
+ u->url, warc_timestamp_str,
+ warc_request_uuid, warc_ip, type,
+ statcode, head);
+ xfree (type);
+
+ if (_err != RETRFINISHED || hs->res < 0)
+ {
+ CLOSE_INVALIDATE (sock);
+ retval = _err;
+ goto cleanup;
+ }
+ else
+ CLOSE_FINISH (sock);
+ }
+ else
+ {
+ /* Since WARC is disabled, we are not interested in the response body. */
+ if (keep_alive && !head_only
+ && skip_short_body (sock, contlen, chunked_transfer_encoding))
+ CLOSE_FINISH (sock);
+ else
+ CLOSE_INVALIDATE (sock);
+ }
+
+ pconn.authorized = false;
+
+ {
+ auth_err = check_auth (u, user, passwd, resp, req,
+ &ntlm_seen, &retry,
+ &basic_auth_finished,
+ &auth_finished);
+ if (auth_err == RETROK && retry)
+ {
+ resp_free (&resp);
+ xfree (message);
+ xfree (head);
+ goto retry_with_auth;
+ }
+ }
+ if (auth_err == RETROK)
+ retval = AUTHFAILED;
+ else
+ retval = auth_err;
+ goto cleanup;
+ }
+ else /* statcode != HTTP_STATUS_UNAUTHORIZED */
+ {
+ /* Kludge: if NTLM is used, mark the TCP connection as authorized. */
+ if (ntlm_seen)
+ pconn.authorized = true;
+ }
+
+ {
+ uerr_t ret = check_file_output (u, hs, resp, hdrval, sizeof hdrval);
+ if (ret != RETROK)
+ {
+ retval = ret;
+ goto cleanup;
+ }
+ }
+
+ hs->statcode = statcode;
+ xfree (hs->error);
+ if (statcode == -1)
+ hs->error = xstrdup (_("Malformed status line"));
+ else if (!*message)
+ hs->error = xstrdup (_("(no description)"));
+ else
+ hs->error = xstrdup (message);
+
+#ifdef HAVE_HSTS
+ if (opt.hsts && hsts_store)
+ {
+ hsts_params = resp_header_strdup (resp, "Strict-Transport-Security");
+ if (parse_strict_transport_security (hsts_params, &max_age, &include_subdomains))
+ {
+ /* process strict transport security */
+ if (hsts_store_entry (hsts_store, u->scheme, u->host, u->port, max_age, include_subdomains))
+ DEBUGP(("Added new HSTS host: %s:%u (max-age: %lu, includeSubdomains: %s)\n",
+ u->host,
+ (unsigned) u->port,
+ (unsigned long) max_age,
+ (include_subdomains ? "true" : "false")));
+ else
+ DEBUGP(("Updated HSTS host: %s:%u (max-age: %lu, includeSubdomains: %s)\n",
+ u->host,
+ (unsigned) u->port,
+ (unsigned long) max_age,
+ (include_subdomains ? "true" : "false")));
+ }
+ xfree (hsts_params);
+ }
+#endif
+
+ type = resp_header_strdup (resp, "Content-Type");
+ if (type)
+ {
+ char *tmp = strchr (type, ';');
+ if (tmp)
+ {
+#ifdef ENABLE_IRI
+ /* sXXXav: only needed if IRI support is enabled */
+ char *tmp2 = tmp + 1;
+#endif
+
+ while (tmp > type && c_isspace (tmp[-1]))
+ --tmp;
+ *tmp = '\0';
+
+#ifdef ENABLE_IRI
+ /* Try to get remote encoding if needed */
+ if (opt.enable_iri && !opt.encoding_remote)
+ {
+ tmp = parse_charset (tmp2);
+ if (tmp)
+ set_content_encoding (iri, tmp);
+ xfree (tmp);
+ }
+#endif
+ }
+ }
+ xfree (hs->newloc);
+ hs->newloc = resp_header_strdup (resp, "Location");
+ xfree (hs->remote_time);
+ hs->remote_time = resp_header_strdup (resp, "Last-Modified");
+ if (!hs->remote_time) // now look for the Wayback Machine's timestamp
+ hs->remote_time = resp_header_strdup (resp, "X-Archive-Orig-last-modified");
+
+ if (resp_header_copy (resp, "Content-Range", hdrval, sizeof (hdrval)))
+ {
+ wgint first_byte_pos, last_byte_pos, entity_length;
+ if (parse_content_range (hdrval, &first_byte_pos, &last_byte_pos,
+ &entity_length))
+ {
+ contrange = first_byte_pos;
+ contlen = last_byte_pos - first_byte_pos + 1;
+ }
+ }
+
+ if (resp_header_copy (resp, "Content-Encoding", hdrval, sizeof (hdrval)))
+ {
+ hs->local_encoding = ENC_INVALID;
+
+ switch (hdrval[0])
+ {
+ case 'b': case 'B':
+ if (0 == c_strcasecmp(hdrval, "br"))
+ hs->local_encoding = ENC_BROTLI;
+ break;
+ case 'c': case 'C':
+ if (0 == c_strcasecmp(hdrval, "compress"))
+ hs->local_encoding = ENC_COMPRESS;
+ break;
+ case 'd': case 'D':
+ if (0 == c_strcasecmp(hdrval, "deflate"))
+ hs->local_encoding = ENC_DEFLATE;
+ break;
+ case 'g': case 'G':
+ if (0 == c_strcasecmp(hdrval, "gzip"))
+ hs->local_encoding = ENC_GZIP;
+ break;
+ case 'i': case 'I':
+ if (0 == c_strcasecmp(hdrval, "identity"))
+ hs->local_encoding = ENC_NONE;
+ break;
+ case 'x': case 'X':
+ if (0 == c_strcasecmp(hdrval, "x-compress"))
+ hs->local_encoding = ENC_COMPRESS;
+ else if (0 == c_strcasecmp(hdrval, "x-gzip"))
+ hs->local_encoding = ENC_GZIP;
+ break;
+ case '\0':
+ hs->local_encoding = ENC_NONE;
+ }
+
+ if (hs->local_encoding == ENC_INVALID)
+ {
+ DEBUGP (("Unrecognized Content-Encoding: %s\n", hdrval));
+ hs->local_encoding = ENC_NONE;
+ }
+#ifdef HAVE_LIBZ
+ else if (hs->local_encoding == ENC_GZIP
+ && opt.compression != compression_none)
+ {
+ const char *p;
+
+ /* Make sure the Content-Type is not gzip before decompressing */
+ if (type)
+ {
+ p = strchr (type, '/');
+ if (p == NULL)
+ {
+ hs->remote_encoding = ENC_GZIP;
+ hs->local_encoding = ENC_NONE;
+ }
+ else
+ {
+ p++;
+ if (c_tolower(p[0]) == 'x' && p[1] == '-')
+ p += 2;
+ if (0 != c_strcasecmp (p, "gzip"))
+ {
+ hs->remote_encoding = ENC_GZIP;
+ hs->local_encoding = ENC_NONE;
+ }
+ }
+ }
+ else
+ {
+ hs->remote_encoding = ENC_GZIP;
+ hs->local_encoding = ENC_NONE;
+ }
+
+ /* don't uncompress if a file ends with '.gz' or '.tgz' */
+ if (hs->remote_encoding == ENC_GZIP
+ && (p = strrchr(u->file, '.'))
+ && (c_strcasecmp(p, ".gz") == 0 || c_strcasecmp(p, ".tgz") == 0))
+ {
+ DEBUGP (("Enabling broken server workaround. Will not decompress this GZip file.\n"));
+ hs->remote_encoding = ENC_NONE;
+ }
+ }
+#endif
+ }
+
+ /* 20x responses are counted among successful by default. */
+ if (H_20X (statcode))
+ *dt |= RETROKF;
+
+ if (statcode == HTTP_STATUS_NO_CONTENT)
+ {
+ /* 204 response has no body (RFC 2616, 4.3) */
+
+ /* In case the caller cares to look... */
+ hs->len = 0;
+ hs->res = 0;
+ hs->restval = 0;
+
+ CLOSE_FINISH (sock);
+
+ retval = RETRFINISHED;
+ goto cleanup;
+ }
+
+ /* Return if redirected. */
+ if (H_REDIRECTED (statcode) || statcode == HTTP_STATUS_MULTIPLE_CHOICES)
+ {
+ /* RFC2068 says that in case of the 300 (multiple choices)
+ response, the server can output a preferred URL through
+ `Location' header; otherwise, the request should be treated
+ like GET. So, if the location is set, it will be a
+ redirection; otherwise, just proceed normally. */
+ if (statcode == HTTP_STATUS_MULTIPLE_CHOICES && !hs->newloc)
+ *dt |= RETROKF;
+ else
+ {
+ logprintf (LOG_VERBOSE,
+ _("Location: %s%s\n"),
+ hs->newloc ? escnonprint_uri (hs->newloc) : _("unspecified"),
+ hs->newloc ? _(" [following]") : "");
+
+ /* In case the caller cares to look... */
+ hs->len = 0;
+ hs->res = 0;
+ hs->restval = 0;
+
+ /* Normally we are not interested in the response body of a redirect.
+ But if we are writing a WARC file we are: we like to keep everything. */
+ if (warc_enabled)
+ {
+ int _err = read_response_body (hs, sock, NULL, contlen, 0,
+ chunked_transfer_encoding,
+ u->url, warc_timestamp_str,
+ warc_request_uuid, warc_ip, type,
+ statcode, head);
+
+ if (_err != RETRFINISHED || hs->res < 0)
+ {
+ CLOSE_INVALIDATE (sock);
+ retval = _err;
+ goto cleanup;
+ }
+ else
+ CLOSE_FINISH (sock);
+ }
+ else
+ {
+ /* Since WARC is disabled, we are not interested in the response body. */
+ if (keep_alive && !head_only
+ && skip_short_body (sock, contlen, chunked_transfer_encoding))
+ CLOSE_FINISH (sock);
+ else
+ CLOSE_INVALIDATE (sock);
+ }
+
+ /* From RFC2616: The status codes 303 and 307 have
+ been added for servers that wish to make unambiguously
+ clear which kind of reaction is expected of the client.
+
+ A 307 should be redirected using the same method,
+ in other words, a POST should be preserved and not
+ converted to a GET in that case.
+
+ With strict adherence to RFC2616, POST requests are not
+ converted to a GET request on 301 Permanent Redirect
+ or 302 Temporary Redirect.
+
+ A switch may be provided later based on the HTTPbis draft
+ that allows clients to convert POST requests to GET
+ requests on 301 and 302 response codes. */
+ switch (statcode)
+ {
+ case HTTP_STATUS_TEMPORARY_REDIRECT:
+ case HTTP_STATUS_PERMANENT_REDIRECT:
+ retval = NEWLOCATION_KEEP_POST;
+ goto cleanup;
+ case HTTP_STATUS_MOVED_PERMANENTLY:
+ if (opt.method && c_strcasecmp (opt.method, "post") != 0)
+ {
+ retval = NEWLOCATION_KEEP_POST;
+ goto cleanup;
+ }
+ break;
+ case HTTP_STATUS_MOVED_TEMPORARILY:
+ if (opt.method && c_strcasecmp (opt.method, "post") != 0)
+ {
+ retval = NEWLOCATION_KEEP_POST;
+ goto cleanup;
+ }
+ break;
+ }
+ retval = NEWLOCATION;
+ goto cleanup;
+ }
+ }
+
+ if (cond_get)
+ {
+ if (statcode == HTTP_STATUS_NOT_MODIFIED)
+ {
+ logprintf (LOG_VERBOSE,
+ _ ("File %s not modified on server. Omitting download.\n\n"),
+ quote (hs->local_file));
+ *dt |= RETROKF;
+ CLOSE_FINISH (sock);
+ retval = RETRUNNEEDED;
+ goto cleanup;
+ }
+ }
+
+ set_content_type (dt, type);
+
+ if (opt.adjust_extension)
+ {
+ const char *encoding_ext = NULL;
+ switch (hs->local_encoding)
+ {
+ case ENC_INVALID:
+ case ENC_NONE:
+ break;
+ case ENC_BROTLI:
+ encoding_ext = ".br";
+ break;
+ case ENC_COMPRESS:
+ encoding_ext = ".Z";
+ break;
+ case ENC_DEFLATE:
+ encoding_ext = ".zlib";
+ break;
+ case ENC_GZIP:
+ encoding_ext = ".gz";
+ break;
+ default:
+ DEBUGP (("No extension found for encoding %d\n",
+ hs->local_encoding));
+ }
+ if (encoding_ext != NULL)
+ {
+ char *file_ext = strrchr (hs->local_file, '.');
+ /* strip Content-Encoding extension (it will be re-added later) */
+ if (file_ext != NULL && 0 == strcasecmp (file_ext, encoding_ext))
+ *file_ext = '\0';
+ }
+ if (*dt & TEXTHTML)
+ /* -E / --adjust-extension / adjust_extension = on was specified,
+ and this is a text/html file. If some case-insensitive
+ variation on ".htm[l]" isn't already the file's suffix,
+ tack on ".html". */
+ {
+ ensure_extension (hs, ".html", dt);
+ }
+ else if (*dt & TEXTCSS)
+ {
+ ensure_extension (hs, ".css", dt);
+ }
+ if (encoding_ext != NULL)
+ {
+ ensure_extension (hs, encoding_ext, dt);
+ }
+ }
+
+ if (cond_get)
+ {
+ /* Handle the case when server ignores If-Modified-Since header. */
+ if (statcode == HTTP_STATUS_OK && hs->remote_time)
+ {
+ time_t tmr = http_atotm (hs->remote_time);
+
+ /* Check if the local file is up-to-date based on Last-Modified header
+ and content length. */
+ if (tmr != (time_t) - 1 && tmr <= hs->orig_file_tstamp
+ && (contlen == -1 || contlen == hs->orig_file_size))
+ {
+ logprintf (LOG_VERBOSE,
+ _("Server ignored If-Modified-Since header for file %s.\n"
+ "You might want to add --no-if-modified-since option."
+ "\n\n"),
+ quote (hs->local_file));
+ *dt |= RETROKF;
+ CLOSE_INVALIDATE (sock);
+ retval = RETRUNNEEDED;
+ goto cleanup;
+ }
+ }
+ }
+
+ if (statcode == HTTP_STATUS_RANGE_NOT_SATISFIABLE
+ || (!opt.timestamping && hs->restval > 0 && statcode == HTTP_STATUS_OK
+ && contrange == 0 && contlen >= 0 && hs->restval >= contlen))
+ {
+ /* If `-c' is in use and the file has been fully downloaded (or
+ the remote file has shrunk), Wget effectively requests bytes
+ after the end of file and the server response with 416
+ (or 200 with a <= Content-Length. */
+ logputs (LOG_VERBOSE, _("\
+\n The file is already fully retrieved; nothing to do.\n\n"));
+ /* In case the caller inspects. */
+ hs->len = contlen;
+ hs->res = 0;
+ /* Mark as successfully retrieved. */
+ *dt |= RETROKF;
+
+ /* Try to maintain the keep-alive connection. It is often cheaper to
+ * consume some bytes which have already been sent than to negotiate
+ * a new connection. However, if the body is too large, or we don't
+ * care about keep-alive, then simply terminate the connection */
+ if (keep_alive &&
+ skip_short_body (sock, contlen, chunked_transfer_encoding))
+ CLOSE_FINISH (sock);
+ else
+ CLOSE_INVALIDATE (sock);
+ retval = RETRUNNEEDED;
+ goto cleanup;
+ }
+ if ((contrange != 0 && contrange != hs->restval)
+ || (H_PARTIAL (statcode) && !contrange && hs->restval))
+ {
+ /* The Range request was somehow misunderstood by the server.
+ Bail out. */
+ CLOSE_INVALIDATE (sock);
+ retval = RANGEERR;
+ goto cleanup;
+ }
+ if (contlen == -1)
+ hs->contlen = -1;
+ /* If the response is gzipped, the uncompressed size is unknown. */
+ else if (hs->remote_encoding == ENC_GZIP)
+ hs->contlen = -1;
+ else
+ hs->contlen = contlen + contrange;
+
+ if (opt.verbose)
+ {
+ if (*dt & RETROKF)
+ {
+ /* No need to print this output if the body won't be
+ downloaded at all, or if the original server response is
+ printed. */
+ logputs (LOG_VERBOSE, _("Length: "));
+ if (contlen != -1)
+ {
+ logputs (LOG_VERBOSE, number_to_static_string (contlen + contrange));
+ if (contlen + contrange >= 1024)
+ logprintf (LOG_VERBOSE, " (%s)",
+ human_readable (contlen + contrange, 10, 1));
+ if (contrange)
+ {
+ if (contlen >= 1024)
+ logprintf (LOG_VERBOSE, _(", %s (%s) remaining"),
+ number_to_static_string (contlen),
+ human_readable (contlen, 10, 1));
+ else
+ logprintf (LOG_VERBOSE, _(", %s remaining"),
+ number_to_static_string (contlen));
+ }
+ }
+ else
+ logputs (LOG_VERBOSE,
+ opt.ignore_length ? _("ignored") : _("unspecified"));
+ if (type)
+ logprintf (LOG_VERBOSE, " [%s]\n", quotearg_style (escape_quoting_style, type));
+ else
+ logputs (LOG_VERBOSE, "\n");
+ }
+ }
+
+ /* Return if we have no intention of further downloading. */
+ if ((!(*dt & RETROKF) && !opt.content_on_error) || head_only || (opt.spider && !opt.recursive))
+ {
+ /* In case the caller cares to look... */
+ hs->len = 0;
+ hs->res = 0;
+ hs->restval = 0;
+
+ /* Normally we are not interested in the response body of a error responses.
+ But if we are writing a WARC file we are: we like to keep everything. */
+ if (warc_enabled)
+ {
+ int _err = read_response_body (hs, sock, NULL, contlen, 0,
+ chunked_transfer_encoding,
+ u->url, warc_timestamp_str,
+ warc_request_uuid, warc_ip, type,
+ statcode, head);
+
+ if (_err != RETRFINISHED || hs->res < 0)
+ {
+ CLOSE_INVALIDATE (sock);
+ retval = _err;
+ goto cleanup;
+ }
+
+ CLOSE_FINISH (sock);
+ }
+ else
+ {
+ /* Since WARC is disabled, we are not interested in the response body. */
+ if (head_only)
+ /* Pre-1.10 Wget used CLOSE_INVALIDATE here. Now we trust the
+ servers not to send body in response to a HEAD request, and
+ those that do will likely be caught by test_socket_open.
+ If not, they can be worked around using
+ `--no-http-keep-alive'. */
+ CLOSE_FINISH (sock);
+ else if (opt.spider && !opt.recursive)
+ /* we just want to see if the page exists - no downloading required */
+ CLOSE_INVALIDATE (sock);
+ else if (keep_alive
+ && skip_short_body (sock, contlen, chunked_transfer_encoding))
+ /* Successfully skipped the body; also keep using the socket. */
+ CLOSE_FINISH (sock);
+ else
+ CLOSE_INVALIDATE (sock);
+ }
+
+ if (statcode == HTTP_STATUS_GATEWAY_TIMEOUT)
+ retval = GATEWAYTIMEOUT;
+ else
+ retval = RETRFINISHED;
+
+ goto cleanup;
+ }
+
+ err = open_output_stream (hs, count, &fp);
+ if (err != RETROK)
+ {
+ CLOSE_INVALIDATE (sock);
+ retval = err;
+ goto cleanup;
+ }
+
+#ifdef ENABLE_XATTR
+ if (opt.enable_xattr)
+ {
+ if (original_url != u)
+ set_file_metadata (u, original_url, fp);
+ else
+ set_file_metadata (u, NULL, fp);
+ }
+#endif
+
+ err = read_response_body (hs, sock, fp, contlen, contrange,
+ chunked_transfer_encoding,
+ u->url, warc_timestamp_str,
+ warc_request_uuid, warc_ip, type,
+ statcode, head);
+
+ if (hs->res >= 0)
+ CLOSE_FINISH (sock);
+ else
+ CLOSE_INVALIDATE (sock);
+
+ if (!output_stream)
+ fclose (fp);
+
+ retval = err;
+
+ cleanup:
+ xfree (head);
+ xfree (type);
+ xfree (message);
+ resp_free (&resp);
+ request_free (&req);
+
+ return retval;
+}
+
+/* Check whether the supplied HTTP status code is among those
+ listed for the --retry-on-http-error option. */
+static bool
+check_retry_on_http_error (const int statcode)
+{
+ const char *tok = opt.retry_on_http_error;
+ while (tok && *tok)
+ {
+ if (atoi (tok) == statcode)
+ return true;
+ if ((tok = strchr (tok, ',')))
+ ++tok;
+ }
+ return false;
+}
+
+/* The genuine HTTP loop! This is the part where the retrieval is
+ retried, and retried, and retried, and... */
+uerr_t
+http_loop (const struct url *u, struct url *original_url, char **newloc,
+ char **local_file, const char *referer, int *dt, struct url *proxy,
+ struct iri *iri)
+{
+ int count;
+ bool got_head = false; /* used for time-stamping and filename detection */
+ bool time_came_from_head = false;
+ bool got_name = false;
+ char *tms;
+ const char *tmrate;
+ uerr_t err, ret = TRYLIMEXC;
+ time_t tmr = -1; /* remote time-stamp */
+ struct http_stat hstat; /* HTTP status */
+ struct stat st;
+ bool send_head_first = true;
+ bool force_full_retrieve = false;
+
+
+ /* If we are writing to a WARC file: always retrieve the whole file. */
+ if (opt.warc_filename != NULL)
+ force_full_retrieve = true;
+
+
+ /* Assert that no value for *LOCAL_FILE was passed. */
+ assert (local_file == NULL || *local_file == NULL);
+
+ /* Set LOCAL_FILE parameter. */
+ if (local_file && opt.output_document)
+ *local_file = HYPHENP (opt.output_document) ? NULL : xstrdup (opt.output_document);
+
+ /* Reset NEWLOC parameter. */
+ *newloc = NULL;
+
+ /* This used to be done in main, but it's a better idea to do it
+ here so that we don't go through the hoops if we're just using
+ FTP or whatever. */
+ if (opt.cookies)
+ load_cookies ();
+
+ /* Warn on (likely bogus) wildcard usage in HTTP. */
+ if (opt.ftp_glob && has_wildcards_p (u->path))
+ logputs (LOG_VERBOSE, _("Warning: wildcards not supported in HTTP.\n"));
+
+ /* Setup hstat struct. */
+ xzero (hstat);
+ hstat.referer = referer;
+
+ if (opt.output_document)
+ {
+ hstat.local_file = xstrdup (opt.output_document);
+ got_name = true;
+ }
+ else if (!opt.content_disposition)
+ {
+ hstat.local_file =
+ url_file_name (opt.trustservernames ? u : original_url, NULL);
+ got_name = true;
+ }
+
+ if (got_name && file_exists_p (hstat.local_file, NULL) && opt.noclobber && !opt.output_document)
+ {
+ /* If opt.noclobber is turned on and file already exists, do not
+ retrieve the file. But if the output_document was given, then this
+ test was already done and the file didn't exist. Hence the !opt.output_document */
+ get_file_flags (hstat.local_file, dt);
+ ret = RETROK;
+ goto exit;
+ }
+
+ /* Reset the counter. */
+ count = 0;
+
+ /* Reset the document type. */
+ *dt = 0;
+
+ /* Skip preliminary HEAD request if we're not in spider mode. */
+ if (!opt.spider)
+ send_head_first = false;
+
+ /* Send preliminary HEAD request if --content-disposition and -c are used
+ together. */
+ if (opt.content_disposition && opt.always_rest)
+ send_head_first = true;
+
+#ifdef HAVE_METALINK
+ if (opt.metalink_over_http)
+ {
+ *dt |= METALINK_METADATA;
+ send_head_first = true;
+ }
+#endif
+
+ if (opt.timestamping)
+ {
+ /* Use conditional get request if requested
+ * and if timestamp is known at this moment. */
+ if (opt.if_modified_since && !send_head_first && got_name && file_exists_p (hstat.local_file, NULL))
+ {
+ *dt |= IF_MODIFIED_SINCE;
+ {
+ uerr_t timestamp_err = set_file_timestamp (&hstat);
+ if (timestamp_err != RETROK)
+ return timestamp_err;
+ }
+ }
+ /* Send preliminary HEAD request if -N is given and we have existing
+ * destination file or content disposition is enabled. */
+ else if (opt.content_disposition || file_exists_p (hstat.local_file, NULL))
+ send_head_first = true;
+ }
+
+ /* THE loop */
+ do
+ {
+ /* Increment the pass counter. */
+ ++count;
+ sleep_between_retrievals (count);
+
+ /* Get the current time string. */
+ tms = datetime_str (time (NULL));
+
+ if (opt.spider && !got_head)
+ logprintf (LOG_VERBOSE,
+ _("Spider mode enabled. Check if remote file exists.\n"));
+
+ /* Print fetch message, if opt.verbose. */
+ if (opt.verbose)
+ {
+ char *hurl = url_string (u, URL_AUTH_HIDE_PASSWD);
+
+ if (count > 1)
+ {
+ char tmp[256];
+ sprintf (tmp, _("(try:%2d)"), count);
+ logprintf (LOG_NOTQUIET, "--%s-- %s %s\n",
+ tms, tmp, hurl);
+ }
+ else
+ {
+ logprintf (LOG_NOTQUIET, "--%s-- %s\n",
+ tms, hurl);
+ }
+
+#ifdef WINDOWS
+ ws_changetitle (hurl);
+#endif
+ xfree (hurl);
+ }
+
+ /* Default document type is empty. However, if spider mode is
+ on or time-stamping is employed, HEAD_ONLY commands is
+ encoded within *dt. */
+ if (send_head_first && !got_head)
+ *dt |= HEAD_ONLY;
+ else
+ *dt &= ~HEAD_ONLY;
+
+ /* Decide whether or not to restart. */
+ if (force_full_retrieve)
+ hstat.restval = hstat.len;
+ else if (opt.start_pos >= 0)
+ hstat.restval = opt.start_pos;
+ else if (opt.always_rest
+ && got_name
+ && stat (hstat.local_file, &st) == 0
+ && S_ISREG (st.st_mode))
+ /* When -c is used, continue from on-disk size. (Can't use
+ hstat.len even if count>1 because we don't want a failed
+ first attempt to clobber existing data.) */
+ hstat.restval = st.st_size;
+ else if (count > 1)
+ {
+ /* otherwise, continue where the previous try left off */
+ if (hstat.len < hstat.restval)
+ hstat.restval -= hstat.len;
+ else
+ hstat.restval = hstat.len;
+ }
+ else
+ hstat.restval = 0;
+
+ /* Decide whether to send the no-cache directive. We send it in
+ two cases:
+ a) we're using a proxy, and we're past our first retrieval.
+ Some proxies are notorious for caching incomplete data, so
+ we require a fresh get.
+ b) caching is explicitly inhibited. */
+ if ((proxy && count > 1) /* a */
+ || !opt.allow_cache) /* b */
+ *dt |= SEND_NOCACHE;
+ else
+ *dt &= ~SEND_NOCACHE;
+
+ /* Try fetching the document, or at least its head. */
+ err = gethttp (u, original_url, &hstat, dt, proxy, iri, count);
+
+ /* Time? */
+ tms = datetime_str (time (NULL));
+
+ /* Get the new location (with or without the redirection). */
+ if (hstat.newloc)
+ *newloc = xstrdup (hstat.newloc);
+
+ switch (err)
+ {
+ case HERR: case HEOF: case CONSOCKERR:
+ case CONERROR: case READERR: case WRITEFAILED:
+ case RANGEERR: case FOPEN_EXCL_ERR: case GATEWAYTIMEOUT:
+ /* Non-fatal errors continue executing the loop, which will
+ bring them to "while" statement at the end, to judge
+ whether the number of tries was exceeded. */
+ printwhat (count, opt.ntry);
+ continue;
+ case FWRITEERR: case FOPENERR:
+ /* Another fatal error. */
+ logputs (LOG_VERBOSE, "\n");
+ logprintf (LOG_NOTQUIET, _("Cannot write to %s (%s).\n"),
+ quote (hstat.local_file), strerror (errno));
+ ret = err;
+ goto exit;
+ case HOSTERR:
+ /* Fatal unless option set otherwise. */
+ if ( opt.retry_on_host_error )
+ {
+ printwhat (count, opt.ntry);
+ continue;
+ }
+ ret = err;
+ goto exit;
+ case CONIMPOSSIBLE: case PROXERR: case SSLINITFAILED:
+ case CONTNOTSUPPORTED: case VERIFCERTERR: case FILEBADFILE:
+ case UNKNOWNATTR:
+ /* Fatal errors just return from the function. */
+ ret = err;
+ goto exit;
+ case ATTRMISSING:
+ /* A missing attribute in a Header is a fatal Protocol error. */
+ logputs (LOG_VERBOSE, "\n");
+ logprintf (LOG_NOTQUIET, _("Required attribute missing from Header received.\n"));
+ ret = err;
+ goto exit;
+ case AUTHFAILED:
+ logputs (LOG_VERBOSE, "\n");
+ logprintf (LOG_NOTQUIET, _("Username/Password Authentication Failed.\n"));
+ ret = err;
+ goto exit;
+ case WARC_ERR:
+ /* A fatal WARC error. */
+ logputs (LOG_VERBOSE, "\n");
+ logprintf (LOG_NOTQUIET, _("Cannot write to WARC file.\n"));
+ ret = err;
+ goto exit;
+ case WARC_TMP_FOPENERR: case WARC_TMP_FWRITEERR:
+ /* A fatal WARC error. */
+ logputs (LOG_VERBOSE, "\n");
+ logprintf (LOG_NOTQUIET, _("Cannot write to temporary WARC file.\n"));
+ ret = err;
+ goto exit;
+ case CONSSLERR:
+ /* Another fatal error. */
+ logprintf (LOG_NOTQUIET, _("Unable to establish SSL connection.\n"));
+ ret = err;
+ goto exit;
+ case UNLINKERR:
+ /* Another fatal error. */
+ logputs (LOG_VERBOSE, "\n");
+ logprintf (LOG_NOTQUIET, _("Cannot unlink %s (%s).\n"),
+ quote (hstat.local_file), strerror (errno));
+ ret = err;
+ goto exit;
+ case NEWLOCATION:
+ case NEWLOCATION_KEEP_POST:
+ /* Return the new location to the caller. */
+ if (!*newloc)
+ {
+ logprintf (LOG_NOTQUIET,
+ _("ERROR: Redirection (%d) without location.\n"),
+ hstat.statcode);
+ ret = WRONGCODE;
+ }
+ else
+ {
+ ret = err;
+ }
+ goto exit;
+ case RETRUNNEEDED:
+ /* The file was already fully retrieved. */
+ ret = RETROK;
+ goto exit;
+ case RETRFINISHED:
+ /* Deal with you later. */
+ break;
+#ifdef HAVE_METALINK
+ case RETR_WITH_METALINK:
+ {
+ if (hstat.metalink == NULL)
+ {
+ logputs (LOG_NOTQUIET,
+ _("Could not find Metalink data in HTTP response. "
+ "Downloading file using HTTP GET.\n"));
+ *dt &= ~METALINK_METADATA;
+ *dt &= ~HEAD_ONLY;
+ got_head = true;
+ continue;
+ }
+
+ logputs (LOG_VERBOSE,
+ _("Metalink headers found. "
+ "Switching to Metalink mode.\n"));
+
+ ret = retrieve_from_metalink (hstat.metalink);
+ goto exit;
+ }
+ break;
+#endif
+ default:
+ /* All possibilities should have been exhausted. */
+ abort ();
+ }
+
+ if (!(*dt & RETROKF))
+ {
+ char *hurl = NULL;
+ if (!opt.verbose)
+ {
+ /* #### Ugly ugly ugly! */
+ hurl = url_string (u, URL_AUTH_HIDE_PASSWD);
+ logprintf (LOG_NONVERBOSE, "%s:\n", hurl);
+ }
+
+ /* Fall back to GET if HEAD fails with a 500 or 501 error code. */
+ if (*dt & HEAD_ONLY
+ && (hstat.statcode == 500 || hstat.statcode == 501))
+ {
+ got_head = true;
+ xfree (hurl);
+ continue;
+ }
+ /* Maybe we should always keep track of broken links, not just in
+ * spider mode.
+ * Don't log error if it was UTF-8 encoded because we will try
+ * once unencoded. */
+ else if (opt.spider && !iri->utf8_encode)
+ {
+ /* #### Again: ugly ugly ugly! */
+ if (!hurl)
+ hurl = url_string (u, URL_AUTH_HIDE_PASSWD);
+ nonexisting_url (hurl);
+ logprintf (LOG_NOTQUIET, _("\
+Remote file does not exist -- broken link!!!\n"));
+ }
+ else if (check_retry_on_http_error (hstat.statcode))
+ {
+ printwhat (count, opt.ntry);
+ xfree (hurl);
+ continue;
+ }
+ else
+ {
+ logprintf (LOG_NOTQUIET, _("%s ERROR %d: %s.\n"),
+ tms, hstat.statcode,
+ quotearg_style (escape_quoting_style, hstat.error));
+ }
+ logputs (LOG_VERBOSE, "\n");
+ ret = WRONGCODE;
+ xfree (hurl);
+ goto exit;
+ }
+
+ /* Did we get the time-stamp? */
+ if (!got_head || (opt.spider && !opt.recursive))
+ {
+ got_head = true; /* no more time-stamping */
+
+ if (opt.timestamping && !hstat.remote_time)
+ {
+ logputs (LOG_NOTQUIET, _("\
+Last-modified header missing -- time-stamps turned off.\n"));
+ }
+ else if (hstat.remote_time)
+ {
+ /* Convert the date-string into struct tm. */
+ tmr = http_atotm (hstat.remote_time);
+ if (tmr == (time_t) (-1))
+ logputs (LOG_VERBOSE, _("\
+Last-modified header invalid -- time-stamp ignored.\n"));
+ if (*dt & HEAD_ONLY)
+ time_came_from_head = true;
+ }
+
+ if (send_head_first)
+ {
+ /* The time-stamping section. */
+ if (opt.timestamping)
+ {
+ if (hstat.orig_file_name) /* Perform the following
+ checks only if the file
+ we're supposed to
+ download already exists. */
+ {
+ if (hstat.remote_time &&
+ tmr != (time_t) (-1))
+ {
+ /* Now time-stamping can be used validly.
+ Time-stamping means that if the sizes of
+ the local and remote file match, and local
+ file is newer than the remote file, it will
+ not be retrieved. Otherwise, the normal
+ download procedure is resumed. */
+ if (hstat.orig_file_tstamp >= tmr)
+ {
+ if (hstat.contlen == -1
+ || hstat.orig_file_size == hstat.contlen)
+ {
+ logprintf (LOG_VERBOSE, _("\
+Server file no newer than local file %s -- not retrieving.\n\n"),
+ quote (hstat.orig_file_name));
+ ret = RETROK;
+ goto exit;
+ }
+ else
+ {
+ logprintf (LOG_VERBOSE, _("\
+The sizes do not match (local %s) -- retrieving.\n"),
+ number_to_static_string (hstat.orig_file_size));
+ }
+ }
+ else
+ {
+ force_full_retrieve = true;
+ logputs (LOG_VERBOSE,
+ _("Remote file is newer, retrieving.\n"));
+ }
+
+ logputs (LOG_VERBOSE, "\n");
+ }
+ }
+
+ /* free_hstat (&hstat); */
+ hstat.timestamp_checked = true;
+ }
+
+ if (opt.spider)
+ {
+ bool finished = true;
+ if (opt.recursive)
+ {
+ if ((*dt & TEXTHTML) || (*dt & TEXTCSS))
+ {
+ logputs (LOG_VERBOSE, _("\
+Remote file exists and could contain links to other resources -- retrieving.\n\n"));
+ finished = false;
+ }
+ else
+ {
+ logprintf (LOG_VERBOSE, _("\
+Remote file exists but does not contain any link -- not retrieving.\n\n"));
+ ret = RETROK; /* RETRUNNEEDED is not for caller. */
+ }
+ }
+ else
+ {
+ if ((*dt & TEXTHTML) || (*dt & TEXTCSS))
+ {
+ logprintf (LOG_VERBOSE, _("\
+Remote file exists and could contain further links,\n\
+but recursion is disabled -- not retrieving.\n\n"));
+ }
+ else
+ {
+ logprintf (LOG_VERBOSE, _("\
+Remote file exists.\n\n"));
+ }
+ ret = RETROK; /* RETRUNNEEDED is not for caller. */
+ }
+
+ if (finished)
+ {
+ logprintf (LOG_NONVERBOSE,
+ _("%s URL: %s %2d %s\n"),
+ tms, u->url, hstat.statcode,
+ hstat.message ? quotearg_style (escape_quoting_style, hstat.message) : "");
+ goto exit;
+ }
+ }
+
+ got_name = true;
+ *dt &= ~HEAD_ONLY;
+ count = 0; /* the retrieve count for HEAD is reset */
+ continue;
+ } /* send_head_first */
+ } /* !got_head */
+
+ if (opt.useservertimestamps
+ && (tmr != (time_t) (-1))
+ && ((hstat.len == hstat.contlen) ||
+ ((hstat.res == 0) && (hstat.contlen == -1))))
+ {
+ const char *fl = NULL;
+ set_local_file (&fl, hstat.local_file);
+ if (fl)
+ {
+ time_t newtmr = -1;
+ /* Reparse time header, in case it's changed. */
+ if (time_came_from_head
+ && hstat.remote_time && hstat.remote_time[0])
+ {
+ newtmr = http_atotm (hstat.remote_time);
+ if (newtmr != (time_t)-1)
+ tmr = newtmr;
+ }
+ touch (fl, tmr);
+ }
+ }
+ /* End of time-stamping section. */
+
+ tmrate = retr_rate (hstat.rd_size, hstat.dltime);
+ total_download_time += hstat.dltime;
+
+ if (hstat.len == hstat.contlen)
+ {
+ if (*dt & RETROKF || opt.content_on_error)
+ {
+ bool write_to_stdout = (opt.output_document && HYPHENP (opt.output_document));
+
+ logprintf (LOG_VERBOSE,
+ write_to_stdout
+ ? _("%s (%s) - written to stdout %s[%s/%s]\n\n")
+ : _("%s (%s) - %s saved [%s/%s]\n\n"),
+ tms, tmrate,
+ write_to_stdout ? "" : quote (hstat.local_file),
+ number_to_static_string (hstat.len),
+ number_to_static_string (hstat.contlen));
+ logprintf (LOG_NONVERBOSE,
+ "%s URL:%s [%s/%s] -> \"%s\" [%d]\n",
+ tms, u->url,
+ number_to_static_string (hstat.len),
+ number_to_static_string (hstat.contlen),
+ hstat.local_file, count);
+ }
+ ++numurls;
+ total_downloaded_bytes += hstat.rd_size;
+
+ /* Remember that we downloaded the file for later ".orig" code. */
+ if (*dt & ADDED_HTML_EXTENSION)
+ downloaded_file (FILE_DOWNLOADED_AND_HTML_EXTENSION_ADDED, hstat.local_file);
+ else
+ downloaded_file (FILE_DOWNLOADED_NORMALLY, hstat.local_file);
+
+ ret = RETROK;
+ goto exit;
+ }
+ else if (hstat.res == 0) /* No read error */
+ {
+ if (hstat.contlen == -1) /* We don't know how much we were supposed
+ to get, so assume we succeeded. */
+ {
+ if (*dt & RETROKF || opt.content_on_error)
+ {
+ bool write_to_stdout = (opt.output_document && HYPHENP (opt.output_document));
+
+ logprintf (LOG_VERBOSE,
+ write_to_stdout
+ ? _("%s (%s) - written to stdout %s[%s]\n\n")
+ : _("%s (%s) - %s saved [%s]\n\n"),
+ tms, tmrate,
+ write_to_stdout ? "" : quote (hstat.local_file),
+ number_to_static_string (hstat.len));
+ logprintf (LOG_NONVERBOSE,
+ "%s URL:%s [%s] -> \"%s\" [%d]\n",
+ tms, u->url, number_to_static_string (hstat.len),
+ hstat.local_file, count);
+ }
+ ++numurls;
+ total_downloaded_bytes += hstat.rd_size;
+
+ /* Remember that we downloaded the file for later ".orig" code. */
+ if (*dt & ADDED_HTML_EXTENSION)
+ downloaded_file (FILE_DOWNLOADED_AND_HTML_EXTENSION_ADDED, hstat.local_file);
+ else
+ downloaded_file (FILE_DOWNLOADED_NORMALLY, hstat.local_file);
+
+ ret = RETROK;
+ goto exit;
+ }
+ else if (hstat.len < hstat.contlen) /* meaning we lost the
+ connection too soon */
+ {
+ logprintf (LOG_VERBOSE,
+ _("%s (%s) - Connection closed at byte %s. "),
+ tms, tmrate, number_to_static_string (hstat.len));
+ printwhat (count, opt.ntry);
+ continue;
+ }
+ else if (hstat.len != hstat.restval)
+ /* Getting here would mean reading more data than
+ requested with content-length, which we never do. */
+ abort ();
+ else
+ {
+ /* Getting here probably means that the content-length was
+ * _less_ than the original, local size. We should probably
+ * truncate or re-read, or something. FIXME */
+ ret = RETROK;
+ goto exit;
+ }
+ }
+ else /* from now on hstat.res can only be -1 */
+ {
+ if (hstat.contlen == -1)
+ {
+ logprintf (LOG_VERBOSE,
+ _("%s (%s) - Read error at byte %s (%s)."),
+ tms, tmrate, number_to_static_string (hstat.len),
+ hstat.rderrmsg);
+ printwhat (count, opt.ntry);
+ continue;
+ }
+ else /* hstat.res == -1 and contlen is given */
+ {
+ logprintf (LOG_VERBOSE,
+ _("%s (%s) - Read error at byte %s/%s (%s). "),
+ tms, tmrate,
+ number_to_static_string (hstat.len),
+ number_to_static_string (hstat.contlen),
+ hstat.rderrmsg);
+ printwhat (count, opt.ntry);
+ continue;
+ }
+ }
+ /* not reached */
+ }
+ while (!opt.ntry || (count < opt.ntry));
+
+exit:
+ if ((ret == RETROK || opt.content_on_error) && local_file)
+ {
+ xfree (*local_file);
+ /* Bugfix: Prevent SIGSEGV when hstat.local_file was left NULL
+ (i.e. due to opt.content_disposition). */
+ if (hstat.local_file)
+ {
+ *local_file = hstat.local_file;
+ hstat.local_file = NULL;
+ }
+ }
+ free_hstat (&hstat);
+
+ return ret;
+}
+
+/* Check whether the result of strptime() indicates success.
+ strptime() returns the pointer to how far it got to in the string.
+ The processing has been successful if the string is at `GMT' or
+ `+X', or at the end of the string.
+
+ In extended regexp parlance, the function returns 1 if P matches
+ "^ *(GMT|[+-][0-9]|$)", 0 otherwise. P being NULL (which strptime
+ can return) is considered a failure and 0 is returned. */
+static bool
+check_end (const char *p)
+{
+ if (!p)
+ return false;
+ while (c_isspace (*p))
+ ++p;
+ if (!*p
+ || (p[0] == 'G' && p[1] == 'M' && p[2] == 'T')
+ || ((p[0] == '+' || p[0] == '-') && c_isdigit (p[1])))
+ return true;
+ else
+ return false;
+}
+
+/* Convert the textual specification of time in TIME_STRING to the
+ number of seconds since the Epoch.
+
+ TIME_STRING can be in any of the three formats RFC2616 allows the
+ HTTP servers to emit -- RFC1123-date, RFC850-date or asctime-date,
+ as well as the time format used in the Set-Cookie header.
+ Timezones are ignored, and should be GMT.
+
+ Return the computed time_t representation, or -1 if the conversion
+ fails.
+
+ This function uses strptime with various string formats for parsing
+ TIME_STRING. This results in a parser that is not as lenient in
+ interpreting TIME_STRING as I would like it to be. Being based on
+ strptime, it always allows shortened months, one-digit days, etc.,
+ but due to the multitude of formats in which time can be
+ represented, an ideal HTTP time parser would be even more
+ forgiving. It should completely ignore things like week days and
+ concentrate only on the various forms of representing years,
+ months, days, hours, minutes, and seconds. For example, it would
+ be nice if it accepted ISO 8601 out of the box.
+
+ I've investigated free and PD code for this purpose, but none was
+ usable. getdate was big and unwieldy, and had potential copyright
+ issues, or so I was informed. Dr. Marcus Hennecke's atotm(),
+ distributed with phttpd, is excellent, but we cannot use it because
+ it is not assigned to the FSF. So I stuck it with strptime. */
+
+time_t
+http_atotm (const char *time_string)
+{
+ /* NOTE: Solaris strptime man page claims that %n and %t match white
+ space, but that's not universally available. Instead, we simply
+ use ` ' to mean "skip all WS", which works under all strptime
+ implementations I've tested. */
+
+ static const char *time_formats[] = {
+ "%a, %d %b %Y %T", /* rfc1123: Thu, 29 Jan 1998 22:12:57 */
+ "%A, %d-%b-%y %T", /* rfc850: Thursday, 29-Jan-98 22:12:57 */
+ "%a %b %d %T %Y", /* asctime: Thu Jan 29 22:12:57 1998 */
+ "%a, %d-%b-%Y %T" /* cookies: Thu, 29-Jan-1998 22:12:57
+ (used in Set-Cookie, defined in the
+ Netscape cookie specification.) */
+ };
+ const char *oldlocale;
+ char savedlocale[256];
+ size_t i;
+ time_t ret = (time_t) -1;
+
+ /* Solaris strptime fails to recognize English month names in
+ non-English locales, which we work around by temporarily setting
+ locale to C before invoking strptime. */
+ oldlocale = setlocale (LC_TIME, NULL);
+ if (oldlocale)
+ {
+ size_t l = strlen (oldlocale) + 1;
+ if (l >= sizeof savedlocale)
+ savedlocale[0] = '\0';
+ else
+ memcpy (savedlocale, oldlocale, l);
+ }
+ else savedlocale[0] = '\0';
+
+ setlocale (LC_TIME, "C");
+
+ for (i = 0; i < countof (time_formats); i++)
+ {
+ struct tm t;
+
+ /* Some versions of strptime use the existing contents of struct
+ tm to recalculate the date according to format. Zero it out
+ to prevent stack garbage from influencing strptime. */
+ xzero (t);
+
+ if (check_end (strptime (time_string, time_formats[i], &t)))
+ {
+ ret = timegm (&t);
+ break;
+ }
+ }
+
+ /* Restore the previous locale. */
+ if (savedlocale[0])
+ setlocale (LC_TIME, savedlocale);
+
+ return ret;
+}
+
+/* Authorization support: We support three authorization schemes:
+
+ * `Basic' scheme, consisting of base64-ing USER:PASSWORD string;
+
+ * `Digest' scheme, added by Junio Hamano <junio@twinsun.com>,
+ consisting of answering to the server's challenge with the proper
+ MD5 digests.
+
+ * `NTLM' ("NT Lan Manager") scheme, based on code written by Daniel
+ Stenberg for libcurl. Like digest, NTLM is based on a
+ challenge-response mechanism, but unlike digest, it is non-standard
+ (authenticates TCP connections rather than requests), undocumented
+ and Microsoft-specific. */
+
+/* Create the authentication header contents for the `Basic' scheme.
+ This is done by encoding the string "USER:PASS" to base64 and
+ prepending the string "Basic " in front of it. */
+
+static char *
+basic_authentication_encode (const char *user, const char *passwd)
+{
+ char buf_t1[256], buf_t2[256];
+ char *t1, *t2, *ret;
+ size_t len1 = strlen (user) + 1 + strlen (passwd);
+
+ if (len1 < sizeof (buf_t1))
+ t1 = buf_t1;
+ else
+ t1 = xmalloc(len1 + 1);
+
+ if (BASE64_LENGTH (len1) < sizeof (buf_t2))
+ t2 = buf_t2;
+ else
+ t2 = xmalloc (BASE64_LENGTH (len1) + 1);
+
+ sprintf (t1, "%s:%s", user, passwd);
+ wget_base64_encode (t1, len1, t2);
+
+ ret = concat_strings ("Basic ", t2, (char *) 0);
+
+ if (t2 != buf_t2)
+ xfree (t2);
+
+ if (t1 != buf_t1)
+ xfree (t1);
+
+ return ret;
+}
+
+#define SKIP_WS(x) do { \
+ while (c_isspace (*(x))) \
+ ++(x); \
+} while (0)
+
+#ifdef ENABLE_DIGEST
+/* Dump the hexadecimal representation of HASH to BUF. HASH should be
+ an array of 16 bytes containing the hash keys, and BUF should be a
+ buffer of 33 writable characters (32 for hex digits plus one for
+ zero termination). */
+static void
+dump_hash (char *buf, const unsigned char *hash)
+{
+ int i;
+
+ for (i = 0; i < MD5_DIGEST_SIZE; i++, hash++)
+ {
+ *buf++ = XNUM_TO_digit (*hash >> 4);
+ *buf++ = XNUM_TO_digit (*hash & 0xf);
+ }
+ *buf = '\0';
+}
+
+/* Take the line apart to find the challenge, and compose a digest
+ authorization header. See RFC2069 section 2.1.2. */
+static char *
+digest_authentication_encode (const char *au, const char *user,
+ const char *passwd, const char *method,
+ const char *path, uerr_t *auth_err)
+{
+ static char *realm, *opaque, *nonce, *qop, *algorithm;
+ static struct {
+ const char *name;
+ char **variable;
+ } options[] = {
+ { "realm", &realm },
+ { "opaque", &opaque },
+ { "nonce", &nonce },
+ { "qop", &qop },
+ { "algorithm", &algorithm }
+ };
+ char cnonce[16] = "";
+ char *res = NULL;
+ int res_len;
+ size_t res_size;
+ param_token name, value;
+
+
+ realm = opaque = nonce = algorithm = qop = NULL;
+
+ au += 6; /* skip over `Digest' */
+ while (extract_param (&au, &name, &value, ',', NULL))
+ {
+ size_t i;
+ size_t namelen = name.e - name.b;
+ for (i = 0; i < countof (options); i++)
+ if (namelen == strlen (options[i].name)
+ && 0 == strncmp (name.b, options[i].name,
+ namelen))
+ {
+ *options[i].variable = strdupdelim (value.b, value.e);
+ break;
+ }
+ }
+
+ if (qop && strcmp (qop, "auth"))
+ {
+ logprintf (LOG_NOTQUIET, _("Unsupported quality of protection '%s'.\n"), qop);
+ xfree (qop); /* force freeing mem and continue */
+ }
+ else if (algorithm && strcmp (algorithm,"MD5") && strcmp (algorithm,"MD5-sess"))
+ {
+ logprintf (LOG_NOTQUIET, _("Unsupported algorithm '%s'.\n"), algorithm);
+ xfree (algorithm); /* force freeing mem and continue */
+ }
+
+ if (!realm || !nonce || !user || !passwd || !path || !method)
+ {
+ *auth_err = ATTRMISSING;
+ goto cleanup;
+ }
+
+ /* Calculate the digest value. */
+ {
+ struct md5_ctx ctx;
+ unsigned char hash[MD5_DIGEST_SIZE];
+ char a1buf[MD5_DIGEST_SIZE * 2 + 1], a2buf[MD5_DIGEST_SIZE * 2 + 1];
+ char response_digest[MD5_DIGEST_SIZE * 2 + 1];
+
+ /* A1BUF = H(user ":" realm ":" password) */
+ md5_init_ctx (&ctx);
+ md5_process_bytes ((unsigned char *)user, strlen (user), &ctx);
+ md5_process_bytes ((unsigned char *)":", 1, &ctx);
+ md5_process_bytes ((unsigned char *)realm, strlen (realm), &ctx);
+ md5_process_bytes ((unsigned char *)":", 1, &ctx);
+ md5_process_bytes ((unsigned char *)passwd, strlen (passwd), &ctx);
+ md5_finish_ctx (&ctx, hash);
+
+ dump_hash (a1buf, hash);
+
+ if (algorithm && !strcmp (algorithm, "MD5-sess"))
+ {
+ /* A1BUF = H( H(user ":" realm ":" password) ":" nonce ":" cnonce ) */
+ snprintf (cnonce, sizeof (cnonce), "%08x",
+ (unsigned) random_number (INT_MAX));
+
+ md5_init_ctx (&ctx);
+ /* md5_process_bytes (hash, MD5_DIGEST_SIZE, &ctx); */
+ md5_process_bytes (a1buf, MD5_DIGEST_SIZE * 2, &ctx);
+ md5_process_bytes ((unsigned char *)":", 1, &ctx);
+ md5_process_bytes ((unsigned char *)nonce, strlen (nonce), &ctx);
+ md5_process_bytes ((unsigned char *)":", 1, &ctx);
+ md5_process_bytes ((unsigned char *)cnonce, strlen (cnonce), &ctx);
+ md5_finish_ctx (&ctx, hash);
+
+ dump_hash (a1buf, hash);
+ }
+
+ /* A2BUF = H(method ":" path) */
+ md5_init_ctx (&ctx);
+ md5_process_bytes ((unsigned char *)method, strlen (method), &ctx);
+ md5_process_bytes ((unsigned char *)":", 1, &ctx);
+ md5_process_bytes ((unsigned char *)path, strlen (path), &ctx);
+ md5_finish_ctx (&ctx, hash);
+ dump_hash (a2buf, hash);
+
+ if (qop && !strcmp (qop, "auth"))
+ {
+ /* RFC 2617 Digest Access Authentication */
+ /* generate random hex string */
+ if (!*cnonce)
+ snprintf (cnonce, sizeof (cnonce), "%08x",
+ (unsigned) random_number (INT_MAX));
+
+ /* RESPONSE_DIGEST = H(A1BUF ":" nonce ":" noncecount ":" clientnonce ":" qop ": " A2BUF) */
+ md5_init_ctx (&ctx);
+ md5_process_bytes ((unsigned char *)a1buf, MD5_DIGEST_SIZE * 2, &ctx);
+ md5_process_bytes ((unsigned char *)":", 1, &ctx);
+ md5_process_bytes ((unsigned char *)nonce, strlen (nonce), &ctx);
+ md5_process_bytes ((unsigned char *)":", 1, &ctx);
+ md5_process_bytes ((unsigned char *)"00000001", 8, &ctx); /* TODO: keep track of server nonce values */
+ md5_process_bytes ((unsigned char *)":", 1, &ctx);
+ md5_process_bytes ((unsigned char *)cnonce, strlen (cnonce), &ctx);
+ md5_process_bytes ((unsigned char *)":", 1, &ctx);
+ md5_process_bytes ((unsigned char *)qop, strlen (qop), &ctx);
+ md5_process_bytes ((unsigned char *)":", 1, &ctx);
+ md5_process_bytes ((unsigned char *)a2buf, MD5_DIGEST_SIZE * 2, &ctx);
+ md5_finish_ctx (&ctx, hash);
+ }
+ else
+ {
+ /* RFC 2069 Digest Access Authentication */
+ /* RESPONSE_DIGEST = H(A1BUF ":" nonce ":" A2BUF) */
+ md5_init_ctx (&ctx);
+ md5_process_bytes ((unsigned char *)a1buf, MD5_DIGEST_SIZE * 2, &ctx);
+ md5_process_bytes ((unsigned char *)":", 1, &ctx);
+ md5_process_bytes ((unsigned char *)nonce, strlen (nonce), &ctx);
+ md5_process_bytes ((unsigned char *)":", 1, &ctx);
+ md5_process_bytes ((unsigned char *)a2buf, MD5_DIGEST_SIZE * 2, &ctx);
+ md5_finish_ctx (&ctx, hash);
+ }
+
+ dump_hash (response_digest, hash);
+
+ res_size = strlen (user)
+ + strlen (realm)
+ + strlen (nonce)
+ + strlen (path)
+ + 2 * MD5_DIGEST_SIZE /*strlen (response_digest)*/
+ + (opaque ? strlen (opaque) : 0)
+ + (algorithm ? strlen (algorithm) : 0)
+ + (qop ? 128: 0)
+ + strlen (cnonce)
+ + 128;
+
+ res = xmalloc (res_size);
+
+ if (qop && !strcmp (qop, "auth"))
+ {
+ res_len = snprintf (res, res_size, "Digest "\
+ "username=\"%s\", realm=\"%s\", nonce=\"%s\", uri=\"%s\", response=\"%s\""\
+ ", qop=auth, nc=00000001, cnonce=\"%s\"",
+ user, realm, nonce, path, response_digest, cnonce);
+
+ }
+ else
+ {
+ res_len = snprintf (res, res_size, "Digest "\
+ "username=\"%s\", realm=\"%s\", nonce=\"%s\", uri=\"%s\", response=\"%s\"",
+ user, realm, nonce, path, response_digest);
+ }
+
+ if (opaque)
+ {
+ res_len += snprintf (res + res_len, res_size - res_len, ", opaque=\"%s\"", opaque);
+ }
+
+ if (algorithm)
+ {
+ snprintf (res + res_len, res_size - res_len, ", algorithm=\"%s\"", algorithm);
+ }
+ }
+
+cleanup:
+ xfree (realm);
+ xfree (opaque);
+ xfree (nonce);
+ xfree (qop);
+ xfree (algorithm);
+
+ return res;
+}
+#endif /* ENABLE_DIGEST */
+
+/* Computing the size of a string literal must take into account that
+ value returned by sizeof includes the terminating \0. */
+#define STRSIZE(literal) (sizeof (literal) - 1)
+
+/* Whether chars in [b, e) begin with the literal string provided as
+ first argument and are followed by whitespace or terminating \0.
+ The comparison is case-insensitive. */
+#define STARTS(literal, b, e) \
+ ((e > b) \
+ && ((size_t) ((e) - (b))) >= STRSIZE (literal) \
+ && 0 == c_strncasecmp (b, literal, STRSIZE (literal)) \
+ && ((size_t) ((e) - (b)) == STRSIZE (literal) \
+ || c_isspace (b[STRSIZE (literal)])))
+
+static bool
+known_authentication_scheme_p (const char *hdrbeg, const char *hdrend)
+{
+ return STARTS ("Basic", hdrbeg, hdrend)
+#ifdef ENABLE_DIGEST
+ || STARTS ("Digest", hdrbeg, hdrend)
+#endif
+#ifdef ENABLE_NTLM
+ || STARTS ("NTLM", hdrbeg, hdrend)
+#endif
+ ;
+}
+
+#undef STARTS
+
+/* Create the HTTP authorization request header. When the
+ `WWW-Authenticate' response header is seen, according to the
+ authorization scheme specified in that header (`Basic' and `Digest'
+ are supported by the current implementation), produce an
+ appropriate HTTP authorization request header. */
+static char *
+create_authorization_line (const char *au, const char *user,
+ const char *passwd, const char *method,
+ const char *path, bool *finished, uerr_t *auth_err)
+{
+ /* We are called only with known schemes, so we can dispatch on the
+ first letter. */
+ switch (c_toupper (*au))
+ {
+ case 'B': /* Basic */
+ *finished = true;
+ return basic_authentication_encode (user, passwd);
+#ifdef ENABLE_DIGEST
+ case 'D': /* Digest */
+ *finished = true;
+ return digest_authentication_encode (au, user, passwd, method, path, auth_err);
+#endif
+#ifdef ENABLE_NTLM
+ case 'N': /* NTLM */
+ if (!ntlm_input (&pconn.ntlm, au))
+ {
+ *finished = true;
+ return NULL;
+ }
+ return ntlm_output (&pconn.ntlm, user, passwd, finished);
+#endif
+ default:
+ /* We shouldn't get here -- this function should be only called
+ with values approved by known_authentication_scheme_p. */
+ abort ();
+ }
+}
+
+static void
+load_cookies (void)
+{
+ if (!wget_cookie_jar)
+ wget_cookie_jar = cookie_jar_new ();
+ if (opt.cookies_input && !cookies_loaded_p)
+ {
+ cookie_jar_load (wget_cookie_jar, opt.cookies_input);
+ cookies_loaded_p = true;
+ }
+}
+
+void
+save_cookies (void)
+{
+ if (wget_cookie_jar)
+ cookie_jar_save (wget_cookie_jar, opt.cookies_output);
+}
+
+#if defined DEBUG_MALLOC || defined TESTING
+void
+http_cleanup (void)
+{
+ if (pconn_active)
+ invalidate_persistent ();
+
+ if (wget_cookie_jar)
+ {
+ cookie_jar_delete (wget_cookie_jar);
+ wget_cookie_jar = NULL;
+ }
+
+ if (basic_authed_hosts)
+ {
+ hash_table_iterator iter;
+ for (hash_table_iterate (basic_authed_hosts, &iter); hash_table_iter_next (&iter); )
+ {
+ xfree (iter.key);
+ }
+ hash_table_destroy (basic_authed_hosts);
+ basic_authed_hosts = NULL;
+ }
+}
+#endif
+
+void
+ensure_extension (struct http_stat *hs, const char *ext, int *dt)
+{
+ char *last_period_in_local_filename = strrchr (hs->local_file, '.');
+ char shortext[8];
+ int len;
+ shortext[0] = '\0';
+ len = strlen (ext);
+ if (len == 5)
+ {
+ memcpy (shortext, ext, len - 1);
+ shortext[len - 1] = '\0';
+ }
+
+ if (last_period_in_local_filename == NULL
+ || !(0 == strcasecmp (last_period_in_local_filename, shortext)
+ || 0 == strcasecmp (last_period_in_local_filename, ext)))
+ {
+ int local_filename_len = strlen (hs->local_file);
+ /* Resize the local file, allowing for ".html" preceded by
+ optional ".NUMBER". */
+ hs->local_file = xrealloc (hs->local_file,
+ local_filename_len + 24 + len);
+ strcpy (hs->local_file + local_filename_len, ext);
+ /* If clobbering is not allowed and the file, as named,
+ exists, tack on ".NUMBER.html" instead. */
+ if (!ALLOW_CLOBBER && file_exists_p (hs->local_file, NULL))
+ {
+ int ext_num = 1;
+ do
+ sprintf (hs->local_file + local_filename_len,
+ ".%d%s", ext_num++, ext);
+ while (file_exists_p (hs->local_file, NULL));
+ }
+ *dt |= ADDED_HTML_EXTENSION;
+ }
+}
+
+#ifdef TESTING
+
+const char *
+test_parse_range_header (void)
+{
+ unsigned i;
+ static const struct {
+ const char * rangehdr;
+ const wgint firstbyte;
+ const wgint lastbyte;
+ const wgint length;
+ const bool shouldPass;
+ } test_array[] = {
+ { "bytes 0-1000/1000", 0, 1000, 1000, false },
+ { "bytes 0-999/1000", 0, 999, 1000, true },
+ { "bytes 100-99/1000", 100, 99, 1000, false },
+ { "bytes 100-100/1000", 100, 100, 1000, true },
+ { "bytes 0-1000/100000000", 0, 1000, 100000000, true },
+ { "bytes 1-999/1000", 1, 999, 1000, true },
+ { "bytes 42-1233/1234", 42, 1233, 1234, true },
+ { "bytes 42-1233/*", 42, 1233, -1, true },
+ { "bytes 0-2147483648/2147483649", 0, 2147483648U, 2147483649U, true },
+ { "bytes 2147483648-4294967296/4294967297", 2147483648U, 4294967296ULL, 4294967297ULL, true },
+ };
+
+ wgint firstbyteptr[sizeof(wgint)];
+ wgint lastbyteptr[sizeof(wgint)];
+ wgint lengthptr[sizeof(wgint)];
+ bool result;
+ for (i = 0; i < countof (test_array); i++)
+ {
+ result = parse_content_range (test_array[i].rangehdr, firstbyteptr, lastbyteptr, lengthptr);
+#if 0
+ printf ("%ld %ld\n", test_array[i].firstbyte, *firstbyteptr);
+ printf ("%ld %ld\n", test_array[i].lastbyte, *lastbyteptr);
+ printf ("%ld %ld\n", test_array[i].length, *lengthptr);
+ printf ("\n");
+#endif
+ mu_assert ("test_parse_range_header: False Negative", result == test_array[i].shouldPass);
+ mu_assert ("test_parse_range_header: Bad parse", test_array[i].firstbyte == *firstbyteptr &&
+ test_array[i].lastbyte == *lastbyteptr &&
+ test_array[i].length == *lengthptr);
+ }
+
+ return NULL;
+}
+
+const char *
+test_parse_content_disposition (void)
+{
+ unsigned i;
+ static const struct {
+ const char *hdrval;
+ const char *filename;
+ bool result;
+ } test_array[] = {
+ { "filename=\"file.ext\"", "file.ext", true },
+ { "attachment; filename=\"file.ext\"", "file.ext", true },
+ { "attachment; filename=\"file.ext\"; dummy", "file.ext", true },
+ { "attachment", NULL, false },
+ { "attachment; filename*=UTF-8'en-US'hello.txt", "hello.txt", true },
+ { "attachment; filename*0=\"hello\"; filename*1=\"world.txt\"",
+ "helloworld.txt", true },
+ { "attachment; filename=\"A.ext\"; filename*=\"B.ext\"", "B.ext", true },
+ { "attachment; filename*=\"A.ext\"; filename*0=\"B\"; filename*1=\"B.ext\"",
+ "A.ext", true },
+ { "filename**0=\"A\"; filename**1=\"A.ext\"; filename*0=\"B\";\
+filename*1=\"B\"", "AA.ext", true },
+ };
+
+ for (i = 0; i < countof (test_array); ++i)
+ {
+ char *filename;
+ bool res;
+
+ res = parse_content_disposition (test_array[i].hdrval, &filename);
+
+ mu_assert ("test_parse_content_disposition: wrong result",
+ res == test_array[i].result
+ && (res == false
+ || 0 == strcmp (test_array[i].filename, filename)));
+ xfree (filename);
+ }
+
+ return NULL;
+}
+
+#endif /* TESTING */
+
+/*
+ * vim: et sts=2 sw=2 cino+={s
+ */
diff --git a/src/http.h b/src/http.h
new file mode 100644
index 0000000..5eac0da
--- /dev/null
+++ b/src/http.h
@@ -0,0 +1,51 @@
+/* Declarations for HTTP.
+ Copyright (C) 2005-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef HTTP_H
+#define HTTP_H
+
+#include "hsts.h"
+
+struct url;
+
+uerr_t http_loop (const struct url *, struct url *, char **, char **, const char *,
+ int *, struct url *, struct iri *);
+void save_cookies (void);
+void http_cleanup (void);
+time_t http_atotm (const char *);
+
+typedef struct {
+ /* A token consists of characters in the [b, e) range. */
+ const char *b, *e;
+} param_token;
+bool extract_param (const char **, param_token *, param_token *, char, bool *);
+
+
+#endif /* HTTP_H */
diff --git a/src/init.c b/src/init.c
new file mode 100644
index 0000000..aa526de
--- /dev/null
+++ b/src/init.c
@@ -0,0 +1,2135 @@
+/* Reading/parsing the initialization file.
+ Copyright (C) 1996-2012, 2014-2015, 2018-2020 Free Software
+ Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+#include "exits.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <limits.h>
+/* not all systems provide PATH_MAX in limits.h */
+#ifndef PATH_MAX
+# include <sys/param.h>
+# ifndef PATH_MAX
+# define PATH_MAX MAXPATHLEN
+# endif
+#endif
+
+#include <regex.h>
+
+#ifdef HAVE_PWD_H
+# include <pwd.h>
+#endif
+#include <assert.h>
+
+#include "utils.h"
+#include "init.h"
+#include "host.h"
+#include "netrc.h"
+#include "progress.h"
+#include "connect.h" /* for connect_cleanup */
+#include "ssl.h" /* for ssl_cleanup */
+#include "recur.h" /* for INFINITE_RECURSION */
+#include "convert.h" /* for convert_cleanup */
+#include "res.h" /* for res_cleanup */
+#include "http.h" /* for http_cleanup */
+#include "retr.h" /* for output_stream */
+#include "warc.h" /* for warc_close */
+#include "spider.h" /* for spider_cleanup */
+#include "html-url.h" /* for cleanup_html_url */
+#include "ptimer.h" /* for ptimer_destroy */
+#include "c-strcase.h"
+
+#ifdef TESTING
+#include "../tests/unit-tests.h"
+#endif
+
+
+
+#define CMD_DECLARE(func) static bool func (const char *, const char *, void *)
+
+CMD_DECLARE (cmd_boolean);
+CMD_DECLARE (cmd_bytes);
+CMD_DECLARE (cmd_bytes_sum);
+#ifdef HAVE_SSL
+CMD_DECLARE (cmd_cert_type);
+#endif
+CMD_DECLARE (cmd_directory_vector);
+CMD_DECLARE (cmd_number);
+CMD_DECLARE (cmd_number_inf);
+CMD_DECLARE (cmd_string);
+CMD_DECLARE (cmd_string_uppercase);
+CMD_DECLARE (cmd_file);
+CMD_DECLARE (cmd_file_once);
+CMD_DECLARE (cmd_directory);
+CMD_DECLARE (cmd_time);
+CMD_DECLARE (cmd_vector);
+
+CMD_DECLARE (cmd_use_askpass);
+
+#ifdef HAVE_LIBZ
+CMD_DECLARE (cmd_spec_compression);
+#endif
+CMD_DECLARE (cmd_spec_dirstruct);
+CMD_DECLARE (cmd_spec_header);
+CMD_DECLARE (cmd_spec_warc_header);
+CMD_DECLARE (cmd_spec_htmlify);
+CMD_DECLARE (cmd_spec_mirror);
+CMD_DECLARE (cmd_spec_prefer_family);
+CMD_DECLARE (cmd_spec_progress);
+CMD_DECLARE (cmd_spec_progressdisp);
+CMD_DECLARE (cmd_spec_recursive);
+CMD_DECLARE (cmd_spec_regex_type);
+CMD_DECLARE (cmd_spec_restrict_file_names);
+CMD_DECLARE (cmd_spec_report_speed);
+#ifdef HAVE_SSL
+CMD_DECLARE (cmd_spec_secure_protocol);
+#endif
+CMD_DECLARE (cmd_spec_timeout);
+CMD_DECLARE (cmd_spec_useragent);
+CMD_DECLARE (cmd_spec_verbose);
+CMD_DECLARE (cmd_check_cert);
+
+/* List of recognized commands, each consisting of name, place and
+ function. When adding a new command, simply add it to the list,
+ but be sure to keep the list sorted alphabetically, as
+ command_by_name's binary search depends on it. Also, be sure to
+ add any entries that allocate memory (e.g. cmd_string and
+ cmd_vector) to the cleanup() function below. */
+
+static const struct {
+ const char *name;
+ void *place;
+ bool (*action) (const char *, const char *, void *);
+} commands[] = {
+ /* KEEP THIS LIST ALPHABETICALLY SORTED */
+ { "accept", &opt.accepts, cmd_vector },
+ { "acceptregex", &opt.acceptregex_s, cmd_string },
+ { "addhostdir", &opt.add_hostdir, cmd_boolean },
+ { "adjustextension", &opt.adjust_extension, cmd_boolean },
+ { "alwaysrest", &opt.always_rest, cmd_boolean }, /* deprecated */
+ { "askpassword", &opt.ask_passwd, cmd_boolean },
+ { "authnochallenge", &opt.auth_without_challenge,
+ cmd_boolean },
+ { "background", &opt.background, cmd_boolean },
+ { "backupconverted", &opt.backup_converted, cmd_boolean },
+ { "backups", &opt.backups, cmd_number },
+ { "base", &opt.base_href, cmd_string },
+ { "bindaddress", &opt.bind_address, cmd_string },
+#ifdef HAVE_LIBCARES
+ { "binddnsaddress", &opt.bind_dns_address, cmd_string },
+#endif
+ { "bodydata", &opt.body_data, cmd_string },
+ { "bodyfile", &opt.body_file, cmd_string },
+#ifdef HAVE_SSL
+ { "cacertificate", &opt.ca_cert, cmd_file },
+#endif
+ { "cache", &opt.allow_cache, cmd_boolean },
+#ifdef HAVE_SSL
+ { "cadirectory", &opt.ca_directory, cmd_directory },
+ { "certificate", &opt.cert_file, cmd_file },
+ { "certificatetype", &opt.cert_type, cmd_cert_type },
+ { "checkcertificate", &opt.check_cert, cmd_check_cert },
+#endif
+ { "chooseconfig", &opt.choose_config, cmd_file },
+#ifdef HAVE_SSL
+ { "ciphers", &opt.tls_ciphers_string, cmd_string },
+#endif
+#ifdef HAVE_LIBZ
+ { "compression", &opt.compression, cmd_spec_compression },
+#endif
+ { "connecttimeout", &opt.connect_timeout, cmd_time },
+ { "contentdisposition", &opt.content_disposition, cmd_boolean },
+ { "contentonerror", &opt.content_on_error, cmd_boolean },
+ { "continue", &opt.always_rest, cmd_boolean },
+ { "convertfileonly", &opt.convert_file_only, cmd_boolean },
+ { "convertlinks", &opt.convert_links, cmd_boolean },
+ { "cookies", &opt.cookies, cmd_boolean },
+#ifdef HAVE_SSL
+ { "crlfile", &opt.crl_file, cmd_file_once },
+#endif
+ { "cutdirs", &opt.cut_dirs, cmd_number },
+ { "debug", &opt.debug, cmd_boolean },
+ { "defaultpage", &opt.default_page, cmd_string },
+ { "deleteafter", &opt.delete_after, cmd_boolean },
+ { "dirprefix", &opt.dir_prefix, cmd_directory },
+ { "dirstruct", NULL, cmd_spec_dirstruct },
+ { "dnscache", &opt.dns_cache, cmd_boolean },
+#ifdef HAVE_LIBCARES
+ { "dnsservers", &opt.dns_servers, cmd_string },
+#endif
+ { "dnstimeout", &opt.dns_timeout, cmd_time },
+ { "domains", &opt.domains, cmd_vector },
+ { "dotbytes", &opt.dot_bytes, cmd_bytes },
+ { "dotsinline", &opt.dots_in_line, cmd_number },
+ { "dotspacing", &opt.dot_spacing, cmd_number },
+ { "dotstyle", &opt.dot_style, cmd_string }, /* deprecated */
+#ifdef HAVE_SSL
+ { "egdfile", &opt.egd_file, cmd_file },
+#endif
+ { "excludedirectories", &opt.excludes, cmd_directory_vector },
+ { "excludedomains", &opt.exclude_domains, cmd_vector },
+ { "followftp", &opt.follow_ftp, cmd_boolean },
+ { "followtags", &opt.follow_tags, cmd_vector },
+ { "forcehtml", &opt.force_html, cmd_boolean },
+ { "ftppasswd", &opt.ftp_passwd, cmd_string }, /* deprecated */
+ { "ftppassword", &opt.ftp_passwd, cmd_string },
+ { "ftpproxy", &opt.ftp_proxy, cmd_string },
+#ifdef HAVE_SSL
+ { "ftpscleardataconnection", &opt.ftps_clear_data_connection, cmd_boolean },
+ { "ftpsfallbacktoftp", &opt.ftps_fallback_to_ftp, cmd_boolean },
+ { "ftpsimplicit", &opt.ftps_implicit, cmd_boolean },
+ { "ftpsresumessl", &opt.ftps_resume_ssl, cmd_boolean },
+#endif
+#ifdef __VMS
+ { "ftpstmlf", &opt.ftp_stmlf, cmd_boolean },
+#endif /* def __VMS */
+ { "ftpuser", &opt.ftp_user, cmd_string },
+ { "glob", &opt.ftp_glob, cmd_boolean },
+ { "header", NULL, cmd_spec_header },
+#ifdef HAVE_HSTS
+ { "hsts", &opt.hsts, cmd_boolean },
+ { "hstsfile", &opt.hsts_file, cmd_file },
+#endif
+ { "htmlextension", &opt.adjust_extension, cmd_boolean }, /* deprecated */
+ { "htmlify", NULL, cmd_spec_htmlify },
+ { "httpkeepalive", &opt.http_keep_alive, cmd_boolean },
+ { "httppasswd", &opt.http_passwd, cmd_string }, /* deprecated */
+ { "httppassword", &opt.http_passwd, cmd_string },
+ { "httpproxy", &opt.http_proxy, cmd_string },
+#ifdef HAVE_SSL
+ { "httpsonly", &opt.https_only, cmd_boolean },
+#endif
+ { "httpsproxy", &opt.https_proxy, cmd_string },
+ { "httpuser", &opt.http_user, cmd_string },
+ { "ifmodifiedsince", &opt.if_modified_since, cmd_boolean },
+ { "ignorecase", &opt.ignore_case, cmd_boolean },
+ { "ignorelength", &opt.ignore_length, cmd_boolean },
+ { "ignoretags", &opt.ignore_tags, cmd_vector },
+ { "includedirectories", &opt.includes, cmd_directory_vector },
+#ifdef ENABLE_IPV6
+ { "inet4only", &opt.ipv4_only, cmd_boolean },
+ { "inet6only", &opt.ipv6_only, cmd_boolean },
+#endif
+ { "input", &opt.input_filename, cmd_file },
+#ifdef HAVE_METALINK
+ { "inputmetalink", &opt.input_metalink, cmd_file },
+#endif
+ { "iri", &opt.enable_iri, cmd_boolean },
+ { "keepbadhash", &opt.keep_badhash, cmd_boolean },
+ { "keepsessioncookies", &opt.keep_session_cookies, cmd_boolean },
+ { "limitrate", &opt.limit_rate, cmd_bytes },
+ { "loadcookies", &opt.cookies_input, cmd_file },
+ { "localencoding", &opt.locale, cmd_string },
+ { "logfile", &opt.lfilename, cmd_file },
+ { "login", &opt.ftp_user, cmd_string },/* deprecated*/
+ { "maxredirect", &opt.max_redirect, cmd_number },
+#ifdef HAVE_METALINK
+ { "metalinkindex", &opt.metalink_index, cmd_number_inf },
+ { "metalinkoverhttp", &opt.metalink_over_http, cmd_boolean },
+#endif
+ { "method", &opt.method, cmd_string_uppercase },
+ { "mirror", NULL, cmd_spec_mirror },
+ { "netrc", &opt.netrc, cmd_boolean },
+ { "noclobber", &opt.noclobber, cmd_boolean },
+ { "noconfig", &opt.noconfig, cmd_boolean },
+ { "noparent", &opt.no_parent, cmd_boolean },
+ { "noproxy", &opt.no_proxy, cmd_vector },
+ { "numtries", &opt.ntry, cmd_number_inf },/* deprecated*/
+ { "outputdocument", &opt.output_document, cmd_file },
+ { "pagerequisites", &opt.page_requisites, cmd_boolean },
+ { "passiveftp", &opt.ftp_pasv, cmd_boolean },
+ { "passwd", &opt.ftp_passwd, cmd_string },/* deprecated*/
+ { "password", &opt.passwd, cmd_string },
+#ifdef HAVE_SSL
+ { "pinnedpubkey", &opt.pinnedpubkey, cmd_string },
+#endif
+ { "postdata", &opt.post_data, cmd_string },
+ { "postfile", &opt.post_file_name, cmd_file },
+ { "preferfamily", NULL, cmd_spec_prefer_family },
+#ifdef HAVE_METALINK
+ { "preferredlocation", &opt.preferred_location, cmd_string },
+#endif
+ { "preservepermissions", &opt.preserve_perm, cmd_boolean },
+#ifdef HAVE_SSL
+ { "privatekey", &opt.private_key, cmd_file },
+ { "privatekeytype", &opt.private_key_type, cmd_cert_type },
+#endif
+ { "progress", &opt.progress_type, cmd_spec_progress },
+ { "protocoldirectories", &opt.protocol_directories, cmd_boolean },
+ { "proxypasswd", &opt.proxy_passwd, cmd_string }, /* deprecated */
+ { "proxypassword", &opt.proxy_passwd, cmd_string },
+ { "proxyuser", &opt.proxy_user, cmd_string },
+ { "quiet", &opt.quiet, cmd_boolean },
+ { "quota", &opt.quota, cmd_bytes_sum },
+#ifdef HAVE_SSL
+ { "randomfile", &opt.random_file, cmd_file },
+#endif
+ { "randomwait", &opt.random_wait, cmd_boolean },
+ { "readtimeout", &opt.read_timeout, cmd_time },
+ { "reclevel", &opt.reclevel, cmd_number_inf },
+ { "recursive", NULL, cmd_spec_recursive },
+ { "referer", &opt.referer, cmd_string },
+ { "regextype", &opt.regex_type, cmd_spec_regex_type },
+ { "reject", &opt.rejects, cmd_vector },
+ { "rejectedlog", &opt.rejected_log, cmd_file },
+ { "rejectregex", &opt.rejectregex_s, cmd_string },
+ { "relativeonly", &opt.relative_only, cmd_boolean },
+ { "remoteencoding", &opt.encoding_remote, cmd_string },
+ { "removelisting", &opt.remove_listing, cmd_boolean },
+ { "reportspeed", &opt.report_bps, cmd_spec_report_speed},
+ { "restrictfilenames", NULL, cmd_spec_restrict_file_names },
+ { "retrsymlinks", &opt.retr_symlinks, cmd_boolean },
+ { "retryconnrefused", &opt.retry_connrefused, cmd_boolean },
+ { "retryonhosterror", &opt.retry_on_host_error, cmd_boolean },
+ { "retryonhttperror", &opt.retry_on_http_error, cmd_string },
+ { "robots", &opt.use_robots, cmd_boolean },
+ { "savecookies", &opt.cookies_output, cmd_file },
+ { "saveheaders", &opt.save_headers, cmd_boolean },
+#ifdef HAVE_SSL
+ { "secureprotocol", &opt.secure_protocol, cmd_spec_secure_protocol },
+#endif
+ { "serverresponse", &opt.server_response, cmd_boolean },
+ { "showalldnsentries", &opt.show_all_dns_entries, cmd_boolean },
+ { "showprogress", &opt.show_progress, cmd_spec_progressdisp },
+ { "spanhosts", &opt.spanhost, cmd_boolean },
+ { "spider", &opt.spider, cmd_boolean },
+ { "startpos", &opt.start_pos, cmd_bytes },
+ { "strictcomments", &opt.strict_comments, cmd_boolean },
+ { "timeout", NULL, cmd_spec_timeout },
+ { "timestamping", &opt.timestamping, cmd_boolean },
+ { "tries", &opt.ntry, cmd_number_inf },
+ { "trustservernames", &opt.trustservernames, cmd_boolean },
+ { "unlink", &opt.unlink_requested, cmd_boolean },
+#ifndef __VMS
+ { "useaskpass" , &opt.use_askpass, cmd_use_askpass },
+#endif
+ { "useproxy", &opt.use_proxy, cmd_boolean },
+ { "user", &opt.user, cmd_string },
+ { "useragent", NULL, cmd_spec_useragent },
+ { "useservertimestamps", &opt.useservertimestamps, cmd_boolean },
+ { "verbose", NULL, cmd_spec_verbose },
+ { "wait", &opt.wait, cmd_time },
+ { "waitretry", &opt.waitretry, cmd_time },
+ { "warccdx", &opt.warc_cdx_enabled, cmd_boolean },
+ { "warccdxdedup", &opt.warc_cdx_dedup_filename, cmd_file },
+#ifdef HAVE_LIBZ
+ { "warccompression", &opt.warc_compression_enabled, cmd_boolean },
+#endif
+ { "warcdigests", &opt.warc_digests_enabled, cmd_boolean },
+ { "warcfile", &opt.warc_filename, cmd_file },
+ { "warcheader", NULL, cmd_spec_warc_header },
+ { "warckeeplog", &opt.warc_keep_log, cmd_boolean },
+ { "warcmaxsize", &opt.warc_maxsize, cmd_bytes },
+ { "warctempdir", &opt.warc_tempdir, cmd_directory },
+#ifdef USE_WATT32
+ { "wdebug", &opt.wdebug, cmd_boolean },
+#endif
+#ifdef ENABLE_XATTR
+ { "xattr", &opt.enable_xattr, cmd_boolean },
+#endif
+};
+
+/* Look up CMDNAME in the commands[] and return its position in the
+ array. If CMDNAME is not found, return -1. */
+
+static int
+command_by_name (const char *cmdname)
+{
+ /* Use binary search for speed. Wget has ~100 commands, which
+ guarantees a worst case performance of 7 string comparisons. */
+ int lo = 0, hi = countof (commands) - 1;
+
+ while (lo <= hi)
+ {
+ int mid = (lo + hi) >> 1;
+ int cmp = c_strcasecmp (cmdname, commands[mid].name);
+ if (cmp < 0)
+ hi = mid - 1;
+ else if (cmp > 0)
+ lo = mid + 1;
+ else
+ return mid;
+ }
+ return -1;
+}
+
+/* Reset the variables to default values. */
+void
+defaults (void)
+{
+ char *tmp;
+
+ /* Most of the default values are 0 (and 0.0, NULL, and false).
+ Just reset everything, and fill in the non-zero values. Note
+ that initializing pointers to NULL this way is technically
+ illegal, but porting Wget to a machine where NULL is not all-zero
+ bit pattern will be the least of the implementors' worries. */
+ xzero (opt);
+
+#ifdef HAVE_METALINK
+ opt.metalink_index = -1;
+#endif
+
+ opt.cookies = true;
+ opt.verbose = -1;
+ opt.ntry = 20;
+ opt.reclevel = 5;
+ opt.add_hostdir = true;
+ opt.netrc = true;
+ opt.ftp_glob = true;
+ opt.htmlify = true;
+ opt.http_keep_alive = true;
+ opt.use_proxy = true;
+ opt.convert_file_only = false;
+ tmp = getenv ("no_proxy");
+ if (tmp)
+ opt.no_proxy = sepstring (tmp);
+ opt.prefer_family = prefer_none;
+ opt.allow_cache = true;
+ opt.if_modified_since = true;
+
+ opt.read_timeout = 900;
+ opt.use_robots = true;
+
+ opt.remove_listing = true;
+
+ opt.dot_bytes = 1024;
+ opt.dot_spacing = 10;
+ opt.dots_in_line = 50;
+
+ opt.dns_cache = true;
+ opt.ftp_pasv = true;
+ /* 2014-09-07 Darshit Shah <darnir@gmail.com>
+ * opt.retr_symlinks is set to true by default. Creating symbolic links on the
+ * local filesystem pose a security threat by malicious FTP Servers that
+ * server a specially crafted .listing file akin to this:
+ *
+ * lrwxrwxrwx 1 root root 33 Dec 25 2012 JoCxl6d8rFU -> /
+ * drwxrwxr-x 15 1024 106 4096 Aug 28 02:02 JoCxl6d8rFU
+ *
+ * A .listing file in this fashion makes Wget susceptiple to a symlink attack
+ * wherein the attacker is able to create arbitrary files, directories and
+ * symbolic links on the target system and even set permissions.
+ *
+ * Hence, by default Wget attempts to retrieve the pointed-to files and does
+ * not create the symbolic links locally.
+ */
+ opt.retr_symlinks = true;
+
+#ifdef HAVE_SSL
+ opt.check_cert = CHECK_CERT_ON;
+ opt.ftps_resume_ssl = true;
+ opt.ftps_fallback_to_ftp = false;
+ opt.ftps_implicit = false;
+ opt.ftps_clear_data_connection = false;
+#endif
+
+#ifdef HAVE_LIBZ
+ opt.compression = compression_none;
+#endif
+
+ /* The default for file name restriction defaults to the OS type. */
+#if defined(WINDOWS) || defined(MSDOS) || defined(__CYGWIN__)
+ opt.restrict_files_os = restrict_windows;
+#elif defined(__VMS)
+ opt.restrict_files_os = restrict_vms;
+#else
+ opt.restrict_files_os = restrict_unix;
+#endif
+ opt.restrict_files_ctrl = true;
+ opt.restrict_files_nonascii = false;
+ opt.restrict_files_case = restrict_no_case_restriction;
+
+ opt.regex_type = regex_type_posix;
+
+ opt.max_redirect = 20;
+
+ opt.waitretry = 10;
+
+#ifdef ENABLE_IRI
+ opt.enable_iri = true;
+#else
+ opt.enable_iri = false;
+#endif
+ opt.locale = NULL;
+ opt.encoding_remote = NULL;
+
+ opt.useservertimestamps = true;
+ opt.show_all_dns_entries = false;
+
+ opt.warc_maxsize = 0; /* 1024 * 1024 * 1024; */
+#ifdef HAVE_LIBZ
+ opt.warc_compression_enabled = true;
+#else
+ opt.warc_compression_enabled = false;
+#endif
+ opt.warc_digests_enabled = true;
+ opt.warc_cdx_enabled = false;
+ opt.warc_cdx_dedup_filename = NULL;
+ opt.warc_tempdir = NULL;
+ opt.warc_keep_log = true;
+
+ /* Use a negative value to mark the absence of --start-pos option */
+ opt.start_pos = -1;
+ opt.show_progress = -1;
+ opt.noscroll = false;
+
+#ifdef HAVE_HSTS
+ /* HSTS is enabled by default */
+ opt.hsts = true;
+#endif
+
+ opt.enable_xattr = false;
+}
+
+/* Return the user's home directory (strdup-ed), or NULL if none is
+ found. */
+char *
+home_dir (void)
+{
+ static char *buf = NULL;
+ static char *home, *ret;
+
+ if (!home)
+ {
+ home = getenv ("HOME");
+ if (!home)
+ {
+#if defined(MSDOS)
+ int len;
+
+ /* Under MSDOS, if $HOME isn't defined, use the directory where
+ `wget.exe' resides. */
+ const char *_w32_get_argv0 (void); /* in libwatt.a/pcconfig.c */
+ char *p;
+
+ buff = _w32_get_argv0 ();
+
+ p = strrchr (buf, '/'); /* djgpp */
+ if (!p)
+ p = strrchr (buf, '\\'); /* others */
+ assert (p);
+
+ len = p - buff + 1;
+ buff = strdup (_w32_get_argv0 ());
+
+ home = buf;
+#elif !defined(WINDOWS)
+ /* If HOME is not defined, try getting it from the password
+ file. */
+ struct passwd *pwd = getpwuid (getuid ());
+ if (!pwd || !pwd->pw_dir)
+ return NULL;
+ home = pwd->pw_dir;
+#else /* !WINDOWS */
+ /* Under Windows, if $HOME isn't defined, use the directory where
+ `wget.exe' resides. */
+ home = ws_mypath ();
+#endif /* WINDOWS */
+ }
+ }
+
+ ret = home ? xstrdup (home) : NULL;
+ xfree (buf);
+
+ return ret;
+}
+
+/* Check the 'WGETRC' environment variable and return the file name
+ if 'WGETRC' is set and is a valid file.
+ If the `WGETRC' variable exists but the file does not exist, the
+ function will exit(). */
+char *
+wgetrc_env_file_name (void)
+{
+ char *env = getenv ("WGETRC");
+ if (env && *env)
+ {
+ file_stats_t flstat;
+ if (!file_exists_p (env, &flstat))
+ {
+ fprintf (stderr, _("%s: WGETRC points to %s, which couldn't be accessed because of error: %s.\n"),
+ exec_name, env, strerror(flstat.access_err));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ return xstrdup (env);
+ }
+ return NULL;
+}
+
+/* Append file name to (locally appropriate) directory spec.
+ Return pointer to allocated storage. */
+char *
+ajoin_dir_file (const char *dir, const char *file)
+{
+ char *dir_file;
+#ifdef __VMS
+ /* No separator: "dev:[dir]" + "name.type" */
+ dir_file = aprintf ("%s%s", dir, file);
+#else /* def __VMS */
+ /* Slash separator: "/a/b" + "/" + "name.type" */
+ dir_file = aprintf ("%s/%s", dir, file);
+#endif /* def __VMS [else] */
+ return dir_file;
+}
+
+/* Check for the existence of '$HOME/.wgetrc' and return its path
+ if it exists and is set. */
+char *
+wgetrc_user_file_name (void)
+{
+ char *file = NULL;
+
+ /* Join opt.homedir ($HOME) and ".wgetrc" */
+ if (opt.homedir) {
+ file = ajoin_dir_file(opt.homedir, ".wgetrc");
+ }
+
+ if (!file)
+ return NULL;
+#ifndef FUZZING
+ if (!file_exists_p (file, NULL))
+ {
+ xfree (file);
+ return NULL;
+ }
+#endif
+ return file;
+}
+
+/* Return the path to the user's .wgetrc. This is either the value of
+ `WGETRC' environment variable, or `$HOME/.wgetrc'.
+
+ Additionally, for windows, look in the directory where wget.exe
+ resides. */
+char *
+wgetrc_file_name (void)
+{
+ char *file = wgetrc_env_file_name ();
+ if (file && *file)
+ return file;
+
+ file = wgetrc_user_file_name ();
+
+#ifdef WINDOWS
+ /* Under Windows, if we still haven't found .wgetrc, look for the file
+ `wget.ini' in the directory where `wget.exe' resides; we do this for
+ backward compatibility with previous versions of Wget.
+ SYSTEM_WGETRC should not be defined under WINDOWS. */
+ if (!file)
+ {
+ const char *home = ws_mypath ();
+ if (home)
+ {
+ file = aprintf ("%s/wget.ini", home);
+ if (!file_exists_p (file, NULL))
+ {
+ xfree (file);
+ }
+ }
+ }
+#endif /* WINDOWS */
+
+ return file;
+}
+
+/* Return values of parse_line. */
+enum parse_line {
+ line_ok,
+ line_empty,
+ line_syntax_error,
+ line_unknown_command
+};
+
+static enum parse_line parse_line (const char *, char **, char **, int *);
+static bool setval_internal (int, const char *, const char *);
+static bool setval_internal_tilde (int, const char *, const char *);
+
+/* Initialize variables from a wgetrc file. Returns zero (failure) if
+ there were errors in the file. */
+
+bool
+run_wgetrc (const char *file, file_stats_t *flstats)
+{
+ FILE *fp;
+ char *line = NULL;
+ size_t bufsize = 0;
+ int ln;
+ int errcnt = 0;
+
+ fp = fopen_stat (file, "r", flstats);
+ if (!fp)
+ {
+ fprintf (stderr, _("%s: Cannot read %s (%s).\n"), exec_name,
+ file, strerror (errno));
+ return true; /* not a fatal error */
+ }
+ ln = 1;
+ while (getline (&line, &bufsize, fp) > 0)
+ {
+ char *com = NULL, *val = NULL;
+ int comind;
+
+ /* Parse the line. */
+ switch (parse_line (line, &com, &val, &comind))
+ {
+ case line_ok:
+ /* If everything is OK, set the value. */
+ if (!setval_internal_tilde (comind, com, val))
+ {
+ fprintf (stderr, _("%s: Error in %s at line %d.\n"),
+ exec_name, file, ln);
+ ++errcnt;
+ }
+ break;
+ case line_syntax_error:
+ fprintf (stderr, _("%s: Syntax error in %s at line %d.\n"),
+ exec_name, file, ln);
+ ++errcnt;
+ break;
+ case line_unknown_command:
+ fprintf (stderr, _("%s: Unknown command %s in %s at line %d.\n"),
+ exec_name, quote (com), file, ln);
+ ++errcnt;
+ break;
+ case line_empty:
+ break;
+ default:
+ abort ();
+ }
+ xfree (com);
+ xfree (val);
+ ++ln;
+ }
+ xfree (line);
+ fclose (fp);
+
+ return errcnt == 0;
+}
+
+/* Initialize the defaults and run the system wgetrc and user's own
+ wgetrc. */
+int
+initialize (void)
+{
+ char *env_sysrc;
+ file_stats_t flstats;
+ bool ok = true;
+
+ memset(&flstats, 0, sizeof(flstats));
+ /* Run a non-standard system rc file when the according environment
+ variable has been set. For internal testing purposes only! */
+ env_sysrc = getenv ("SYSTEM_WGETRC");
+ if (env_sysrc && file_exists_p (env_sysrc, &flstats))
+ {
+ ok &= run_wgetrc (env_sysrc, &flstats);
+ /* If there are any problems parsing the system wgetrc file, tell
+ the user and exit */
+ if (! ok)
+ {
+ fprintf (stderr, _("\
+Parsing system wgetrc file (env SYSTEM_WGETRC) failed. Please check\n\
+'%s',\n\
+or specify a different file using --config.\n"), env_sysrc);
+ return WGET_EXIT_PARSE_ERROR;
+ }
+ }
+ /* Otherwise, if SYSTEM_WGETRC is defined, use it. */
+#ifdef SYSTEM_WGETRC
+ else if (file_exists_p (SYSTEM_WGETRC, &flstats))
+ ok &= run_wgetrc (SYSTEM_WGETRC, &flstats);
+ /* If there are any problems parsing the system wgetrc file, tell
+ the user and exit */
+ if (! ok)
+ {
+ fprintf (stderr, _("\
+Parsing system wgetrc file failed. Please check\n\
+'%s',\n\
+or specify a different file using --config.\n"), SYSTEM_WGETRC);
+ return WGET_EXIT_PARSE_ERROR;
+ }
+#endif
+ /* Override it with your own, if one exists. */
+ opt.wgetrcfile = wgetrc_file_name ();
+ if (!opt.wgetrcfile)
+ return 0;
+ /* #### We should canonicalize `file' and SYSTEM_WGETRC with
+ something like realpath() before comparing them with `strcmp' */
+#ifdef SYSTEM_WGETRC
+ if (!strcmp (opt.wgetrcfile, SYSTEM_WGETRC))
+ {
+ fprintf (stderr, _("\
+%s: Warning: Both system and user wgetrc point to %s.\n"),
+ exec_name, quote (opt.wgetrcfile));
+ }
+ else
+#endif
+#ifndef FUZZING
+ if (file_exists_p (opt.wgetrcfile, &flstats))
+#endif
+ ok &= run_wgetrc (opt.wgetrcfile, &flstats);
+
+ xfree (opt.wgetrcfile);
+
+ /* If there were errors processing either `.wgetrc', abort. */
+ if (!ok)
+ return WGET_EXIT_PARSE_ERROR;
+
+ return 0;
+}
+
+/* Remove dashes and underscores from S, modifying S in the
+ process. */
+
+static void
+dehyphen (char *s)
+{
+ char *t = s; /* t - tortoise */
+ char *h = s; /* h - hare */
+ while (*h)
+ if (*h == '_' || *h == '-')
+ ++h;
+ else
+ *t++ = *h++;
+ *t = '\0';
+}
+
+/* Parse the line pointed by line, with the syntax:
+ <sp>* command <sp>* = <sp>* value <sp>*
+ Uses malloc to allocate space for command and value.
+
+ Returns one of line_ok, line_empty, line_syntax_error, or
+ line_unknown_command.
+
+ In case of line_ok, *COM and *VAL point to freshly allocated
+ strings, and *COMIND points to com's index. In case of error or
+ empty line, their values are unmodified. */
+
+static enum parse_line
+parse_line (const char *line, char **com, char **val, int *comind)
+{
+ const char *p;
+ const char *end = line + strlen (line);
+ const char *cmdstart, *cmdend;
+ const char *valstart, *valend;
+ char buf[1024];
+ size_t len;
+
+ char *cmdcopy;
+ int ind;
+
+ /* Skip leading and trailing whitespace. */
+ while (*line && c_isspace (*line))
+ ++line;
+ while (end > line && c_isspace (end[-1]))
+ --end;
+
+ /* Skip empty lines and comments. */
+ if (!*line || *line == '#')
+ return line_empty;
+
+ p = line;
+
+ cmdstart = p;
+ while (p < end && (c_isalnum (*p) || *p == '_' || *p == '-'))
+ ++p;
+ cmdend = p;
+
+ /* Skip '=', as well as any space before or after it. */
+ while (p < end && c_isspace (*p))
+ ++p;
+ if (p == end || *p != '=')
+ return line_syntax_error;
+ ++p;
+ while (p < end && c_isspace (*p))
+ ++p;
+
+ valstart = p;
+ valend = end;
+
+ /* The syntax is valid (even though the command might not be). Fill
+ in the command name and value. */
+ *com = strdupdelim (cmdstart, cmdend);
+ *val = strdupdelim (valstart, valend);
+
+ /* The line now known to be syntactically correct. Check whether
+ the command is valid. */
+ len = cmdend - cmdstart;
+ if (len < sizeof (buf))
+ cmdcopy = buf;
+ else
+ cmdcopy = xmalloc (len + 1);
+ memcpy (cmdcopy, cmdstart, len);
+ cmdcopy[len] = 0;
+
+ dehyphen (cmdcopy);
+ ind = command_by_name (cmdcopy);
+ if (cmdcopy != buf)
+ xfree (cmdcopy);
+ if (ind == -1)
+ return line_unknown_command;
+
+ /* Report success to the caller. */
+ *comind = ind;
+ return line_ok;
+}
+
+#if defined(WINDOWS) || defined(MSDOS)
+# define ISSEP(c) ((c) == '/' || (c) == '\\')
+# define SEPSTRING "/\\"
+#else
+# define ISSEP(c) ((c) == '/')
+# define SEPSTRING "/"
+#endif
+
+/* Run commands[comind].action. */
+
+static bool
+setval_internal (int comind, const char *com, const char *val)
+{
+ assert (0 <= comind && ((size_t) comind) < countof (commands));
+
+ if ((unsigned) comind >= countof (commands))
+ return NULL;
+
+ DEBUGP (("Setting %s (%s) to %s\n", com, commands[comind].name, val));
+ return commands[comind].action (com, val, commands[comind].place);
+}
+
+static bool
+setval_internal_tilde (int comind, const char *com, const char *val)
+{
+ bool ret;
+ int homelen;
+ char **pstring;
+ ret = setval_internal (comind, com, val);
+
+ /* We make tilde expansion for cmd_file and cmd_directory */
+ if (((commands[comind].action == cmd_file) ||
+ (commands[comind].action == cmd_directory))
+ && ret && (*val == '~' && ISSEP (val[1])))
+ {
+ pstring = commands[comind].place;
+ if (opt.homedir)
+ {
+ char *home = xstrdup(opt.homedir);
+ homelen = strlen (home);
+ while (homelen && ISSEP (home[homelen - 1]))
+ home[--homelen] = '\0';
+
+ xfree (*pstring);
+
+ /* Skip the leading "~/". */
+ val += strspn(val + 1, SEPSTRING) + 1;
+ *pstring = concat_strings (home, "/", val, (char *)0);
+ xfree (home);
+ }
+ }
+ return ret;
+}
+
+/* Run command COM with value VAL. If running the command produces an
+ error, report the error and exit.
+
+ This is intended to be called from main to modify Wget's behavior
+ through command-line switches. Since COM is hard-coded in main,
+ it is not canonicalized, and this aborts when COM is not found.
+
+ If COMIND's are exported to init.h, this function will be changed
+ to accept COMIND directly. */
+
+void
+setoptval (const char *com, const char *val, const char *optname)
+{
+ /* Prepend "--" to OPTNAME. */
+ char dd_optname[2 + MAX_LONGOPTION + 1];
+
+ if ((unsigned) snprintf(dd_optname, sizeof (dd_optname), "--%s", optname) > sizeof (dd_optname))
+ exit (WGET_EXIT_PARSE_ERROR);
+
+ assert (val != NULL);
+
+ if (!setval_internal (command_by_name (com), dd_optname, val))
+ exit (WGET_EXIT_PARSE_ERROR);
+}
+
+/* Parse OPT into command and value and run it. For example,
+ run_command("foo=bar") is equivalent to setoptval("foo", "bar").
+ This is used by the `--execute' flag in main.c. */
+
+void
+run_command (const char *cmdopt)
+{
+ char *com, *val;
+ int comind;
+ switch (parse_line (cmdopt, &com, &val, &comind))
+ {
+ case line_ok:
+ if (!setval_internal (comind, com, val))
+ exit (WGET_EXIT_PARSE_ERROR);
+ xfree (com);
+ xfree (val);
+ break;
+ default:
+ fprintf (stderr, _("%s: Invalid --execute command %s\n"),
+ exec_name, quote (cmdopt));
+ exit (WGET_EXIT_PARSE_ERROR);
+ }
+}
+
+/* Generic helper functions, for use with `commands'. */
+
+/* Forward declarations: */
+struct decode_item {
+ const char *name;
+ int code;
+};
+static bool decode_string (const char *, const struct decode_item *, int, int *);
+static bool simple_atof (const char *, const char *, double *);
+
+#define CMP1(p, c0) (c_tolower((p)[0]) == (c0) && (p)[1] == '\0')
+
+#define CMP2(p, c0, c1) (c_tolower((p)[0]) == (c0) \
+ && c_tolower((p)[1]) == (c1) \
+ && (p)[2] == '\0')
+
+#define CMP3(p, c0, c1, c2) (c_tolower((p)[0]) == (c0) \
+ && c_tolower((p)[1]) == (c1) \
+ && c_tolower((p)[2]) == (c2) \
+ && (p)[3] == '\0')
+
+
+static int
+cmd_boolean_internal (const char *com _GL_UNUSED, const char *val, void *place _GL_UNUSED)
+{
+ if (CMP2 (val, 'o', 'n') || CMP3 (val, 'y', 'e', 's') || CMP1 (val, '1'))
+ /* "on", "yes" and "1" mean true. */
+ return 1;
+ else if (CMP3 (val, 'o', 'f', 'f') || CMP2 (val, 'n', 'o') || CMP1 (val, '0'))
+ /* "off", "no" and "0" mean false. */
+ return 0;
+ return -1;
+}
+
+/* Store the boolean value from VAL to PLACE. COM is ignored,
+ except for error messages. */
+static bool
+cmd_boolean (const char *com, const char *val, void *place)
+{
+ bool value;
+
+ switch (cmd_boolean_internal (com, val, place))
+ {
+ case 0:
+ value = false;
+ break;
+
+ case 1:
+ value = true;
+ break;
+
+ default:
+ {
+ fprintf (stderr,
+ _("%s: %s: Invalid boolean %s; use `on' or `off'.\n"),
+ exec_name, com, quote (val));
+ return false;
+ }
+ }
+ *(bool *) place = value;
+ return true;
+}
+
+/* Store the check_cert value from VAL to PLACE. COM is ignored,
+ except for error messages. */
+static bool
+cmd_check_cert (const char *com, const char *val, void *place)
+{
+ int value;
+
+ switch (cmd_boolean_internal (com, val, place))
+ {
+ case 0:
+ value = CHECK_CERT_OFF;
+ break;
+
+ case 1:
+ value = CHECK_CERT_ON;
+ break;
+
+ default:
+ {
+ if (!c_strcasecmp (val, "quiet"))
+ value = CHECK_CERT_QUIET;
+ else
+ {
+ fprintf (stderr,
+ _("%s: %s: Invalid %s; use `on', `off' or `quiet'.\n"),
+ exec_name, com, quote (val));
+ return false;
+ }
+ }
+ }
+ *(int *) place = value;
+ return true;
+}
+
+/* Set the non-negative integer value from VAL to PLACE. With
+ incorrect specification, the number remains unchanged. */
+static bool
+cmd_number (const char *com, const char *val, void *place)
+{
+ long l = strtol(val, NULL, 10);
+
+ if (((l == LONG_MIN || l == LONG_MAX) && errno == ERANGE)
+ || l < 0 || l > INT_MAX)
+ {
+ fprintf (stderr, _("%s: %s: Invalid number %s.\n"),
+ exec_name, com, quote (val));
+ return false;
+ }
+ *(int *) place = (int) l;
+ return true;
+}
+
+/* Similar to cmd_number(), only accepts `inf' as a synonym for 0. */
+static bool
+cmd_number_inf (const char *com, const char *val, void *place)
+{
+ if (!c_strcasecmp (val, "inf"))
+ {
+ *(int *) place = 0;
+ return true;
+ }
+ return cmd_number (com, val, place);
+}
+
+/* Copy (strdup) the string at COM to a new location and place a
+ pointer to *PLACE. */
+static bool
+cmd_string (const char *com _GL_UNUSED, const char *val, void *place)
+{
+ char **pstring = (char **)place;
+
+ xfree (*pstring);
+ *pstring = xstrdup (val);
+ return true;
+}
+
+/* Like cmd_string but ensure the string is upper case. */
+static bool
+cmd_string_uppercase (const char *com _GL_UNUSED, const char *val, void *place)
+{
+ char *q, **pstring;
+ pstring = (char **)place;
+ xfree (*pstring);
+
+ *pstring = xmalloc (strlen (val) + 1);
+
+ for (q = *pstring; *val; val++, q++)
+ *q = c_toupper (*val);
+
+ *q = '\0';
+ return true;
+}
+
+
+/* Like cmd_string, but handles tilde-expansion when reading a user's
+ `.wgetrc'. In that case, and if VAL begins with `~', the tilde
+ gets expanded to the user's home directory. */
+static bool
+cmd_file (const char *com _GL_UNUSED, const char *val, void *place)
+{
+ char **pstring = (char **)place;
+
+ xfree (*pstring);
+
+ /* #### If VAL is empty, perhaps should set *PLACE to NULL. */
+
+ *pstring = xstrdup (val);
+
+#if defined(WINDOWS) || defined(MSDOS)
+ /* Convert "\" to "/". */
+ {
+ char *s;
+ for (s = *pstring; *s; s++)
+ if (*s == '\\')
+ *s = '/';
+ }
+#endif
+ return true;
+}
+
+/* like cmd_file, but insist on just a single option usage */
+static bool
+cmd_file_once (const char *com _GL_UNUSED, const char *val, void *place)
+{
+ if (*(char **)place)
+ {
+ fprintf (stderr, _("%s: %s must only be used once\n"),
+ exec_name, com);
+ return false;
+ }
+
+ return cmd_file(com, val, place);
+}
+
+/* Like cmd_file, but strips trailing '/' characters. */
+static bool
+cmd_directory (const char *com, const char *val, void *place)
+{
+ char *s, *t;
+
+ /* Call cmd_file() for tilde expansion and separator
+ canonicalization (backslash -> slash under Windows). These
+ things should perhaps be in a separate function. */
+ if (!cmd_file (com, val, place))
+ return false;
+
+ s = *(char **)place;
+ t = s + strlen (s);
+ while (t > s && *--t == '/')
+ *t = '\0';
+
+ return true;
+}
+
+/* Split VAL by space to a vector of values, and append those values
+ to vector pointed to by the PLACE argument. If VAL is empty, the
+ PLACE vector is cleared instead. */
+
+static bool
+cmd_vector (const char *com _GL_UNUSED, const char *val, void *place)
+{
+ char ***pvec = (char ***)place;
+
+ if (*val)
+ *pvec = merge_vecs (*pvec, sepstring (val));
+ else
+ {
+ free_vec (*pvec);
+ *pvec = NULL;
+ }
+ return true;
+}
+
+static bool
+cmd_directory_vector (const char *com _GL_UNUSED, const char *val, void *place)
+{
+ char ***pvec = (char ***)place;
+
+ if (*val)
+ {
+ /* Strip the trailing slashes from directories. */
+ char **t, **seps;
+
+ seps = sepstring (val);
+ for (t = seps; t && *t; t++)
+ {
+ int len = strlen (*t);
+ /* Skip degenerate case of root directory. */
+ if (len > 1)
+ {
+ if ((*t)[len - 1] == '/')
+ (*t)[len - 1] = '\0';
+ }
+ }
+ *pvec = merge_vecs (*pvec, seps);
+ }
+ else
+ {
+ free_vec (*pvec);
+ *pvec = NULL;
+ }
+ return true;
+}
+
+/* Engine for cmd_bytes and cmd_bytes_sum: converts a string such as
+ "100k" or "2.5G" to a floating point number. */
+
+static bool
+parse_bytes_helper (const char *val, double *result)
+{
+ double number, mult;
+ const char *end = val + strlen (val);
+
+ /* Check for "inf". */
+ if (0 == strcmp (val, "inf"))
+ {
+ *result = 0;
+ return true;
+ }
+
+ /* Strip trailing whitespace. */
+ while (val < end && c_isspace (end[-1]))
+ --end;
+ if (val == end)
+ return false;
+
+ switch (c_tolower (end[-1]))
+ {
+ case 'k':
+ --end, mult = 1024.0;
+ break;
+ case 'm':
+ --end, mult = 1048576.0;
+ break;
+ case 'g':
+ --end, mult = 1073741824.0;
+ break;
+ case 't':
+ --end, mult = 1099511627776.0;
+ break;
+ default:
+ /* Not a recognized suffix: assume it's a digit. (If not,
+ simple_atof will raise an error.) */
+ mult = 1;
+ }
+
+ /* Skip leading and trailing whitespace. */
+ while (val < end && c_isspace (*val))
+ ++val;
+ while (val < end && c_isspace (end[-1]))
+ --end;
+ if (val == end)
+ return false;
+
+ if (!simple_atof (val, end, &number) || number < 0)
+ return false;
+
+ *result = number * mult;
+ return true;
+}
+
+/* Parse VAL as a number and set its value to PLACE (which should
+ point to a wgint).
+
+ By default, the value is assumed to be in bytes. If "K", "M", or
+ "G" are appended, the value is multiplied with 1<<10, 1<<20, or
+ 1<<30, respectively. Floating point values are allowed and are
+ cast to integer before use. The idea is to be able to use things
+ like 1.5k instead of "1536".
+
+ The string "inf" is returned as 0.
+
+ In case of error, false is returned and memory pointed to by PLACE
+ remains unmodified. */
+
+static bool
+cmd_bytes (const char *com, const char *val, void *place)
+{
+ double byte_value;
+ if (!parse_bytes_helper (val, &byte_value))
+ {
+ fprintf (stderr, _("%s: %s: Invalid byte value %s\n"),
+ exec_name, com, quote (val));
+ return false;
+ }
+ *(wgint *)place = (wgint)byte_value;
+ return true;
+}
+
+/* Like cmd_bytes, but PLACE is interpreted as a pointer to
+ SIZE_SUM. It works by converting the string to double, therefore
+ working with values up to 2^53-1 without loss of precision. This
+ value (8192 TB) is large enough to serve for a while. */
+
+static bool
+cmd_bytes_sum (const char *com, const char *val, void *place)
+{
+ double byte_value;
+
+ if (!parse_bytes_helper (val, &byte_value)
+ || byte_value < LONG_MIN || byte_value > LONG_MAX)
+ {
+ fprintf (stderr, _("%s: %s: Invalid byte value %s\n"),
+ exec_name, com, quote (val));
+ return false;
+ }
+ *(SUM_SIZE_INT *) place = (SUM_SIZE_INT) byte_value;
+ return true;
+}
+
+/* Store the value of VAL to *OUT. The value is a time period, by
+ default expressed in seconds, but also accepting suffixes "m", "h",
+ "d", and "w" for minutes, hours, days, and weeks respectively. */
+
+static bool
+cmd_time (const char *com, const char *val, void *place)
+{
+ double number, mult;
+ const char *end = val + strlen (val);
+
+ /* Strip trailing whitespace. */
+ while (val < end && c_isspace (end[-1]))
+ --end;
+
+ if (val == end)
+ {
+ err:
+ fprintf (stderr, _("%s: %s: Invalid time period %s\n"),
+ exec_name, com, quote (val));
+ return false;
+ }
+
+ switch (c_tolower (end[-1]))
+ {
+ case 's':
+ --end, mult = 1; /* seconds */
+ break;
+ case 'm':
+ --end, mult = 60; /* minutes */
+ break;
+ case 'h':
+ --end, mult = 3600; /* hours */
+ break;
+ case 'd':
+ --end, mult = 86400.0; /* days */
+ break;
+ case 'w':
+ --end, mult = 604800.0; /* weeks */
+ break;
+ default:
+ /* Not a recognized suffix: assume it belongs to the number.
+ (If not, simple_atof will raise an error.) */
+ mult = 1;
+ }
+
+ /* Skip leading and trailing whitespace. */
+ while (val < end && c_isspace (*val))
+ ++val;
+ while (val < end && c_isspace (end[-1]))
+ --end;
+ if (val == end)
+ goto err;
+
+ if (!simple_atof (val, end, &number))
+ goto err;
+
+ if (number < 0)
+ {
+ fprintf (stderr, _("%s: %s: Negative time period %s\n"),
+ exec_name, com, quote (val));
+ return false;
+ }
+
+ *(double *)place = number * mult;
+ return true;
+}
+
+
+static bool
+cmd_use_askpass (const char *com _GL_UNUSED, const char *val, void *place)
+{
+ const char *env_name = "WGET_ASKPASS";
+ const char *env;
+
+ if (val && *val)
+ return cmd_string (com, val, place);
+
+ env = getenv (env_name);
+ if (!(env && *env))
+ {
+ env_name = "SSH_ASKPASS";
+ env = getenv (env_name);
+ }
+
+ if (!(env && *env))
+ {
+ fprintf (stderr, _("use-askpass requires a string or either environment variable WGET_ASKPASS or SSH_ASKPASS to be set.\n"));
+ return false;
+ }
+
+ return cmd_string (com, env, place);
+}
+
+#ifdef HAVE_SSL
+static bool
+cmd_cert_type (const char *com, const char *val, void *place)
+{
+ static const struct decode_item choices[] = {
+ { "pem", keyfile_pem },
+ { "der", keyfile_asn1 },
+ { "asn1", keyfile_asn1 },
+ };
+ int ok = decode_string (val, choices, countof (choices), place);
+ if (!ok)
+ fprintf (stderr, _("%s: %s: Invalid value %s.\n"), exec_name, com, quote (val));
+ return ok;
+}
+#endif
+
+/* Specialized helper functions, used by `commands' to handle some
+ options specially. */
+
+static bool check_user_specified_header (const char *);
+
+#ifdef HAVE_LIBZ
+static bool
+cmd_spec_compression (const char *com, const char *val, void *place)
+{
+ static const struct decode_item choices[] = {
+ { "auto", compression_auto },
+ { "gzip", compression_gzip },
+ { "none", compression_none },
+ };
+ int ok = decode_string (val, choices, countof (choices), place);
+ if (!ok)
+ {
+ fprintf (stderr, _("%s: %s: Invalid value %s.\n"), exec_name, com,
+ quote (val));
+ }
+ return ok;
+}
+#endif
+
+static bool
+cmd_spec_dirstruct (const char *com, const char *val, void *place_ignored _GL_UNUSED)
+{
+ if (!cmd_boolean (com, val, &opt.dirstruct))
+ return false;
+ /* Since dirstruct behaviour is explicitly changed, no_dirstruct
+ must be affected inversely. */
+ if (opt.dirstruct)
+ opt.no_dirstruct = false;
+ else
+ opt.no_dirstruct = true;
+ return true;
+}
+
+static bool
+cmd_spec_header (const char *com, const char *val, void *place_ignored _GL_UNUSED)
+{
+ /* Empty value means reset the list of headers. */
+ if (*val == '\0')
+ {
+ free_vec (opt.user_headers);
+ opt.user_headers = NULL;
+ return true;
+ }
+
+ if (!check_user_specified_header (val))
+ {
+ fprintf (stderr, _("%s: %s: Invalid header %s.\n"),
+ exec_name, com, quote (val));
+ return false;
+ }
+ opt.user_headers = vec_append (opt.user_headers, val);
+ return true;
+}
+
+static bool
+cmd_spec_warc_header (const char *com, const char *val, void *place_ignored _GL_UNUSED)
+{
+ /* Empty value means reset the list of headers. */
+ if (*val == '\0')
+ {
+ free_vec (opt.warc_user_headers);
+ opt.warc_user_headers = NULL;
+ return true;
+ }
+
+ if (!check_user_specified_header (val))
+ {
+ fprintf (stderr, _("%s: %s: Invalid WARC header %s.\n"),
+ exec_name, com, quote (val));
+ return false;
+ }
+ opt.warc_user_headers = vec_append (opt.warc_user_headers, val);
+ return true;
+}
+
+static bool
+cmd_spec_htmlify (const char *com, const char *val, void *place_ignored _GL_UNUSED)
+{
+ int flag = cmd_boolean (com, val, &opt.htmlify);
+ if (flag && !opt.htmlify)
+ opt.remove_listing = false;
+ return flag;
+}
+
+/* Set the "mirror" mode. It means: recursive download, timestamping,
+ no limit on max. recursion depth, and don't remove listings. */
+
+static bool
+cmd_spec_mirror (const char *com, const char *val, void *place_ignored _GL_UNUSED)
+{
+ bool mirror;
+
+ if (!cmd_boolean (com, val, &mirror))
+ return false;
+ if (mirror)
+ {
+ opt.recursive = true;
+ if (!opt.no_dirstruct)
+ opt.dirstruct = true;
+ opt.timestamping = true;
+ opt.reclevel = INFINITE_RECURSION;
+ opt.remove_listing = false;
+ }
+ return true;
+}
+
+/* Validate --prefer-family and set the choice. Allowed values are
+ "IPv4", "IPv6", and "none". */
+
+static bool
+cmd_spec_prefer_family (const char *com, const char *val, void *place_ignored _GL_UNUSED)
+{
+ static const struct decode_item choices[] = {
+ { "IPv4", prefer_ipv4 },
+ { "IPv6", prefer_ipv6 },
+ { "none", prefer_none },
+ };
+ int prefer_family = prefer_none;
+ int ok = decode_string (val, choices, countof (choices), &prefer_family);
+ if (!ok)
+ fprintf (stderr, _("%s: %s: Invalid value %s.\n"), exec_name, com, quote (val));
+ opt.prefer_family = prefer_family;
+ return ok;
+}
+
+/* Set progress.type to VAL, but verify that it's a valid progress
+ implementation before that. */
+
+static bool
+cmd_spec_progress (const char *com, const char *val, void *place_ignored _GL_UNUSED)
+{
+ if (!valid_progress_implementation_p (val))
+ {
+ fprintf (stderr, _("%s: %s: Invalid progress type %s.\n"),
+ exec_name, com, quote (val));
+ return false;
+ }
+ xfree (opt.progress_type);
+
+ /* Don't call set_progress_implementation here. It will be called
+ in main when it becomes clear what the log output is. */
+ opt.progress_type = xstrdup (val);
+ return true;
+}
+
+/* Set opt.recursive to VAL as with cmd_boolean. If opt.recursive is
+ set to true, also set opt.dirstruct to true, unless opt.no_dirstruct
+ is specified. */
+
+static bool
+cmd_spec_recursive (const char *com, const char *val, void *place_ignored _GL_UNUSED)
+{
+ if (!cmd_boolean (com, val, &opt.recursive))
+ return false;
+ else
+ {
+ if (opt.recursive && !opt.no_dirstruct)
+ opt.dirstruct = true;
+ }
+ return true;
+}
+
+/* Validate --regex-type and set the choice. */
+
+static bool
+cmd_spec_regex_type (const char *com, const char *val, void *place_ignored _GL_UNUSED)
+{
+ static const struct decode_item choices[] = {
+ { "posix", regex_type_posix },
+#if defined HAVE_LIBPCRE || defined HAVE_LIBPCRE2
+ { "pcre", regex_type_pcre },
+#endif
+ };
+ int regex_type = regex_type_posix;
+ int ok = decode_string (val, choices, countof (choices), &regex_type);
+ if (!ok)
+ fprintf (stderr, _("%s: %s: Invalid value %s.\n"), exec_name, com, quote (val));
+ opt.regex_type = regex_type;
+ return ok;
+}
+
+static bool
+cmd_spec_restrict_file_names (const char *com, const char *val, void *place_ignored _GL_UNUSED)
+{
+ int restrict_os = opt.restrict_files_os;
+ int restrict_ctrl = opt.restrict_files_ctrl;
+ int restrict_case = opt.restrict_files_case;
+ int restrict_nonascii = opt.restrict_files_nonascii;
+
+ const char *end;
+
+#define VAL_IS(string_literal) BOUNDED_EQUAL (val, end, string_literal)
+
+ do
+ {
+ end = strchr (val, ',');
+ if (!end)
+ end = val + strlen (val);
+
+ if (VAL_IS ("unix"))
+ restrict_os = restrict_unix;
+ else if (VAL_IS ("vms"))
+ restrict_os = restrict_vms;
+ else if (VAL_IS ("windows"))
+ restrict_os = restrict_windows;
+ else if (VAL_IS ("lowercase"))
+ restrict_case = restrict_lowercase;
+ else if (VAL_IS ("uppercase"))
+ restrict_case = restrict_uppercase;
+ else if (VAL_IS ("nocontrol"))
+ restrict_ctrl = false;
+ else if (VAL_IS ("ascii"))
+ restrict_nonascii = true;
+ else
+ {
+ fprintf (stderr, _("\
+%s: %s: Invalid restriction %s,\n\
+ use [unix|vms|windows],[lowercase|uppercase],[nocontrol],[ascii].\n"),
+ exec_name, com, quote (val));
+ return false;
+ }
+
+ if (*end)
+ val = end + 1;
+ }
+ while (*val && *end);
+
+#undef VAL_IS
+
+ opt.restrict_files_os = restrict_os;
+ opt.restrict_files_ctrl = restrict_ctrl;
+ opt.restrict_files_case = restrict_case;
+ opt.restrict_files_nonascii = restrict_nonascii;
+
+ return true;
+}
+
+static bool
+cmd_spec_report_speed (const char *com, const char *val, void *place_ignored _GL_UNUSED)
+{
+ opt.report_bps = c_strcasecmp (val, "bits") == 0;
+ if (!opt.report_bps)
+ fprintf (stderr, _("%s: %s: Invalid value %s.\n"), exec_name, com, quote (val));
+ return opt.report_bps;
+}
+
+#ifdef HAVE_SSL
+static bool
+cmd_spec_secure_protocol (const char *com, const char *val, void *place)
+{
+ static const struct decode_item choices[] = {
+ { "auto", secure_protocol_auto },
+ { "sslv2", secure_protocol_sslv2 },
+ { "sslv3", secure_protocol_sslv3 },
+ { "tlsv1", secure_protocol_tlsv1 },
+ { "tlsv1_1", secure_protocol_tlsv1_1 },
+ { "tlsv1_2", secure_protocol_tlsv1_2 },
+ { "tlsv1_3", secure_protocol_tlsv1_3 },
+ { "pfs", secure_protocol_pfs },
+ };
+ int ok = decode_string (val, choices, countof (choices), place);
+ if (!ok)
+ fprintf (stderr, _("%s: %s: Invalid value %s.\n"), exec_name, com, quote (val));
+ return ok;
+}
+#endif
+
+/* Set all three timeout values. */
+
+static bool
+cmd_spec_timeout (const char *com, const char *val, void *place_ignored _GL_UNUSED)
+{
+ double value;
+ if (!cmd_time (com, val, &value))
+ return false;
+ opt.read_timeout = value;
+ opt.connect_timeout = value;
+ opt.dns_timeout = value;
+ return true;
+}
+
+static bool
+cmd_spec_useragent (const char *com, const char *val, void *place_ignored _GL_UNUSED)
+{
+ /* Disallow embedded newlines. */
+ if (strchr (val, '\n'))
+ {
+ fprintf (stderr, _("%s: %s: Invalid value %s.\n"),
+ exec_name, com, quote (val));
+ return false;
+ }
+ xfree (opt.useragent);
+ opt.useragent = xstrdup (val);
+ return true;
+}
+
+/* The --show-progress option is not a cmd_boolean since we need to keep track
+ * of whether the user explicitly requested the option or not. -1 means
+ * uninitialized. */
+static bool
+cmd_spec_progressdisp (const char *com, const char *val, void *place _GL_UNUSED)
+{
+ bool flag;
+ if (cmd_boolean (com, val, &flag))
+ {
+ opt.show_progress = flag;
+ return true;
+ }
+ return false;
+}
+
+
+/* The "verbose" option cannot be cmd_boolean because the variable is
+ not bool -- it's of type int (-1 means uninitialized because of
+ some random hackery for disallowing -q -v). */
+
+static bool
+cmd_spec_verbose (const char *com, const char *val, void *place_ignored _GL_UNUSED)
+{
+ bool flag;
+ if (cmd_boolean (com, val, &flag))
+ {
+ opt.verbose = flag;
+ opt.show_progress = -1;
+ return true;
+ }
+ return false;
+}
+
+/* Miscellaneous useful routines. */
+
+/* Trivial atof, with error reporting. Handles "<digits>[.<digits>]",
+ doesn't handle exponential notation. Returns true on success,
+ false on failure. In case of success, stores its result to
+ *DEST. */
+
+static bool
+simple_atof (const char *beg, const char *end, double *dest)
+{
+ double result = 0;
+
+ bool negative = false;
+ bool seen_dot = false;
+ bool seen_digit = false;
+ double divider = 1;
+
+ const char *p = beg;
+
+ while (p < end && c_isspace (*p))
+ ++p;
+ if (p < end && (*p == '-' || *p == '+'))
+ {
+ negative = (*p == '-');
+ ++p;
+ }
+
+ for (; p < end; p++)
+ {
+ char ch = *p;
+ if (c_isdigit (ch))
+ {
+ if (!seen_dot)
+ result = (10 * result) + (ch - '0');
+ else
+ result += (ch - '0') / (divider *= 10);
+ seen_digit = true;
+ }
+ else if (ch == '.')
+ {
+ if (!seen_dot)
+ seen_dot = true;
+ else
+ return false;
+ }
+ else
+ return false;
+ }
+ if (!seen_digit)
+ return false;
+ if (negative)
+ result = -result;
+
+ *dest = result;
+ return true;
+}
+
+/* Verify that the user-specified header in S is valid. It must
+ contain a colon preceded by non-white-space characters and must not
+ contain newlines. */
+
+static bool
+check_user_specified_header (const char *s)
+{
+ const char *p;
+
+ for (p = s; *p && *p != ':' && !c_isspace (*p); p++)
+ ;
+ /* The header MUST contain `:' preceded by at least one
+ non-whitespace character. */
+ if (*p != ':' || p == s)
+ return false;
+ /* The header MUST NOT contain newlines. */
+ if (strchr (s, '\n'))
+ return false;
+ return true;
+}
+
+/* Decode VAL into a number, according to ITEMS. */
+
+static bool
+decode_string (const char *val, const struct decode_item *items, int itemcount,
+ int *place)
+{
+ int i;
+ for (i = 0; i < itemcount; i++)
+ if (0 == c_strcasecmp (val, items[i].name))
+ {
+ *place = items[i].code;
+ return true;
+ }
+ return false;
+}
+
+extern struct ptimer *timer;
+extern int cleaned_up;
+
+/* Free the memory allocated by global variables. */
+void
+cleanup (void)
+{
+ /* Free external resources, close files, etc. */
+
+ if (cleaned_up++)
+ return; /* cleanup() must not be called twice */
+
+ /* Close WARC file. */
+ if (opt.warc_filename != 0)
+ warc_close ();
+
+ log_close ();
+
+ if (output_stream && output_stream != stderr)
+ {
+ FILE *fp = output_stream;
+ output_stream = NULL;
+ if (fclose (fp) == EOF)
+ inform_exit_status (CLOSEFAILED);
+ }
+
+ /* No need to check for error because Wget flushes its output (and
+ checks for errors) after any data arrives. */
+
+ /* We're exiting anyway so there's no real need to call free()
+ hundreds of times. Skipping the frees will make Wget exit
+ faster.
+ *
+ However, when detecting leaks, it's crucial to free() everything
+ because then you can find the real leaks, i.e. the allocated
+ memory which grows with the size of the program. */
+
+#if defined DEBUG_MALLOC || defined TESTING
+ convert_cleanup ();
+ res_cleanup ();
+ http_cleanup ();
+ cleanup_html_url ();
+ spider_cleanup ();
+ host_cleanup ();
+ log_cleanup ();
+ netrc_cleanup ();
+#ifdef HAVE_SSL
+ ssl_cleanup ();
+#endif
+ connect_cleanup ();
+
+ xfree (opt.choose_config);
+ xfree (opt.lfilename);
+ xfree (opt.dir_prefix);
+ xfree (opt.input_filename);
+#ifdef HAVE_METALINK
+ xfree (opt.input_metalink);
+ xfree (opt.preferred_location);
+#endif
+ xfree (opt.output_document);
+ xfree (opt.default_page);
+ if (opt.regex_type == regex_type_posix)
+ {
+ if (opt.acceptregex)
+ regfree (opt.acceptregex);
+ if (opt.rejectregex)
+ regfree (opt.rejectregex);
+ }
+ xfree (opt.acceptregex);
+ xfree (opt.rejectregex);
+ xfree (opt.acceptregex_s);
+ xfree (opt.rejectregex_s);
+ free_vec (opt.accepts);
+ free_vec (opt.rejects);
+ free_vec ((char **)opt.excludes);
+ free_vec ((char **)opt.includes);
+ free_vec (opt.domains);
+ free_vec (opt.exclude_domains);
+ free_vec (opt.follow_tags);
+ free_vec (opt.ignore_tags);
+ xfree (opt.progress_type);
+ xfree (opt.warc_filename);
+ xfree (opt.warc_tempdir);
+ xfree (opt.warc_cdx_dedup_filename);
+ xfree (opt.ftp_user);
+ xfree (opt.ftp_passwd);
+ xfree (opt.ftp_proxy);
+ xfree (opt.https_proxy);
+ xfree (opt.http_proxy);
+ free_vec (opt.no_proxy);
+ xfree (opt.proxy_user);
+ xfree (opt.proxy_passwd);
+ xfree (opt.useragent);
+ xfree (opt.referer);
+ xfree (opt.http_user);
+ xfree (opt.http_passwd);
+ xfree (opt.dot_style);
+ free_vec (opt.user_headers);
+ free_vec (opt.warc_user_headers);
+# ifdef HAVE_SSL
+ xfree (opt.cert_file);
+ xfree (opt.private_key);
+ xfree (opt.ca_directory);
+ xfree (opt.ca_cert);
+ xfree (opt.crl_file);
+ xfree (opt.pinnedpubkey);
+ xfree (opt.random_file);
+ xfree (opt.egd_file);
+# endif
+ xfree (opt.bind_address);
+ xfree (opt.cookies_input);
+ xfree (opt.cookies_output);
+ xfree (opt.user);
+ xfree (opt.passwd);
+ xfree (opt.base_href);
+ xfree (opt.method);
+ xfree (opt.post_file_name);
+ xfree (opt.post_data);
+ xfree (opt.body_data);
+ xfree (opt.body_file);
+ xfree (opt.rejected_log);
+ xfree (opt.use_askpass);
+ xfree (opt.retry_on_http_error);
+
+ xfree (opt.encoding_remote);
+ xfree (opt.locale);
+#ifdef HAVE_HSTS
+ xfree (opt.hsts_file);
+#endif
+
+ xfree (opt.wgetrcfile);
+ xfree (opt.homedir);
+ xfree (exec_name);
+ xfree (program_argstring);
+ ptimer_destroy (timer); timer = NULL;
+
+#ifdef HAVE_LIBCARES
+#include <ares.h>
+ {
+ extern ares_channel ares;
+
+ xfree (opt.bind_dns_address);
+ xfree (opt.dns_servers);
+ ares_destroy (ares);
+ ares_library_cleanup ();
+ }
+#endif
+
+ quotearg_free ();
+
+#endif /* DEBUG_MALLOC || TESTING */
+}
+
+/* Unit testing routines. */
+
+#ifdef TESTING
+
+const char *
+test_commands_sorted(void)
+{
+ unsigned i;
+
+ for (i = 1; i < countof(commands); ++i)
+ {
+ if (c_strcasecmp (commands[i - 1].name, commands[i].name) > 0)
+ {
+ mu_assert ("FAILED", false);
+ break;
+ }
+ }
+ return NULL;
+}
+
+const char *
+test_cmd_spec_restrict_file_names(void)
+{
+ unsigned i;
+ static const struct {
+ const char *val;
+ int expected_restrict_files_os;
+ bool expected_restrict_files_ctrl;
+ int expected_restrict_files_case;
+ bool result;
+ } test_array[] = {
+ { "windows", restrict_windows, true, restrict_no_case_restriction, true },
+ { "windows,", restrict_windows, true, restrict_no_case_restriction, true },
+ { "windows,lowercase", restrict_windows, true, restrict_lowercase, true },
+ { "unix,nocontrol,lowercase,", restrict_unix, false, restrict_lowercase, true },
+ };
+
+ for (i = 0; i < countof(test_array); ++i)
+ {
+ bool res;
+
+ defaults();
+ res = cmd_spec_restrict_file_names ("dummy", test_array[i].val, NULL);
+
+ /*
+ fprintf (stderr, "test_cmd_spec_restrict_file_names: TEST %d\n", i); fflush (stderr);
+ fprintf (stderr, "opt.restrict_files_os: %d\n", opt.restrict_files_os); fflush (stderr);
+ fprintf (stderr, "opt.restrict_files_ctrl: %d\n", opt.restrict_files_ctrl); fflush (stderr);
+ fprintf (stderr, "opt.restrict_files_case: %d\n", opt.restrict_files_case); fflush (stderr);
+ */
+ mu_assert ("test_cmd_spec_restrict_file_names: wrong result",
+ res == test_array[i].result
+ && (int) opt.restrict_files_os == test_array[i].expected_restrict_files_os
+ && opt.restrict_files_ctrl == test_array[i].expected_restrict_files_ctrl
+ && (int) opt.restrict_files_case == test_array[i].expected_restrict_files_case);
+ }
+
+ return NULL;
+}
+
+#endif /* TESTING */
diff --git a/src/init.h b/src/init.h
new file mode 100644
index 0000000..a7619ce
--- /dev/null
+++ b/src/init.h
@@ -0,0 +1,48 @@
+/* Declarations for init.c.
+ Copyright (C) 1996-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef INIT_H
+#define INIT_H
+
+char *ajoin_dir_file (const char *, const char *);
+char *wgetrc_env_file_name (void);
+char *wgetrc_user_file_name (void);
+char *wgetrc_file_name (void);
+int initialize (void);
+void run_command (const char *);
+void setoptval (const char *, const char *, const char *);
+char *home_dir (void);
+void cleanup (void);
+void defaults (void);
+bool run_wgetrc (const char *file, file_stats_t *);
+
+#define MAX_LONGOPTION 26
+
+#endif /* INIT_H */
diff --git a/src/iri.c b/src/iri.c
new file mode 100644
index 0000000..afdadf7
--- /dev/null
+++ b/src/iri.c
@@ -0,0 +1,449 @@
+/* IRI related functions.
+ Copyright (C) 2008-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at
+your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <langinfo.h>
+#include <errno.h>
+#ifdef HAVE_ICONV
+# include <iconv.h>
+#endif
+#include <idn2.h>
+#if IDN2_VERSION_NUMBER < 0x00140000
+# include <unicase.h>
+# include <unistr.h>
+#endif
+
+#include "utils.h"
+#include "url.h"
+#include "c-strcase.h"
+#include "c-strcasestr.h"
+#include "xstrndup.h"
+
+/* Note: locale encoding is kept in options struct (opt.locale) */
+
+/* Given a string containing "charset=XXX", return the encoding if found,
+ or NULL otherwise */
+char *
+parse_charset (const char *str)
+{
+ const char *end;
+ char *charset;
+
+ if (!str || !*str)
+ return NULL;
+
+ str = c_strcasestr (str, "charset=");
+ if (!str)
+ return NULL;
+
+ str += 8;
+ end = str;
+
+ /* sXXXav: which chars should be banned ??? */
+ while (*end && !c_isspace (*end))
+ end++;
+
+ /* sXXXav: could strdupdelim return NULL ? */
+ charset = strdupdelim (str, end);
+
+ /* Do a minimum check on the charset value */
+ if (!check_encoding_name (charset))
+ {
+ xfree (charset);
+ return NULL;
+ }
+
+ /*logprintf (LOG_VERBOSE, "parse_charset: %s\n", quote (charset));*/
+
+ return charset;
+}
+
+/* Find the locale used, or fall back on a default value */
+const char *
+find_locale (void)
+{
+ const char *encoding = nl_langinfo(CODESET);
+
+ if (!encoding || !*encoding)
+ return xstrdup("ASCII");
+
+ return xstrdup(encoding);
+}
+
+/* Basic check of an encoding name. */
+bool
+check_encoding_name (const char *encoding)
+{
+ const char *s = encoding;
+
+ while (*s)
+ {
+ if (!c_isascii (*s) || c_isspace (*s))
+ {
+ logprintf (LOG_VERBOSE, _("Encoding %s isn't valid\n"), quote (encoding));
+ return false;
+ }
+
+ s++;
+ }
+
+ return true;
+}
+
+#ifdef HAVE_ICONV
+/* Do the conversion according to the passed conversion descriptor cd. *out
+ will contain the transcoded string on success. *out content is
+ unspecified otherwise. */
+static bool
+do_conversion (const char *tocode, const char *fromcode, char const *in_org, size_t inlen, char **out)
+{
+ iconv_t cd;
+ /* sXXXav : hummm hard to guess... */
+ size_t len, done, outlen;
+ int invalid = 0, tooshort = 0;
+ char *s, *in, *in_save;
+
+ cd = iconv_open (tocode, fromcode);
+ if (cd == (iconv_t)(-1))
+ {
+ logprintf (LOG_VERBOSE, _("Conversion from %s to %s isn't supported\n"),
+ quote (fromcode), quote (tocode));
+ *out = NULL;
+ return false;
+ }
+
+ /* iconv() has to work on an unescaped string */
+ in_save = in = xstrndup (in_org, inlen);
+ url_unescape_except_reserved (in);
+ inlen = strlen(in);
+
+ len = outlen = inlen * 2;
+ *out = s = xmalloc (outlen + 1);
+ done = 0;
+
+ for (;;)
+ {
+ if (iconv (cd, (ICONV_CONST char **) &in, &inlen, out, &outlen) != (size_t)(-1) &&
+ iconv (cd, NULL, NULL, out, &outlen) != (size_t)(-1))
+ {
+ *out = s;
+ *(s + len - outlen - done) = '\0';
+ xfree(in_save);
+ iconv_close(cd);
+ IF_DEBUG
+ {
+ /* not not print out embedded passwords, in_org might be an URL */
+ if (!strchr(in_org, '@') && !strchr(*out, '@'))
+ debug_logprintf ("converted '%s' (%s) -> '%s' (%s)\n", in_org, fromcode, *out, tocode);
+ else
+ debug_logprintf ("logging suppressed, strings may contain password\n");
+ }
+ return true;
+ }
+
+ /* Incomplete or invalid multibyte sequence */
+ if (errno == EINVAL || errno == EILSEQ)
+ {
+ if (!invalid)
+ logprintf (LOG_VERBOSE,
+ _("Incomplete or invalid multibyte sequence encountered\n"));
+
+ invalid++;
+ **out = *in;
+ in++;
+ inlen--;
+ (*out)++;
+ outlen--;
+ }
+ else if (errno == E2BIG) /* Output buffer full */
+ {
+ tooshort++;
+ done = len;
+ len = done + inlen * 2;
+ s = xrealloc (s, len + 1);
+ *out = s + done - outlen;
+ outlen += inlen * 2;
+ }
+ else /* Weird, we got an unspecified error */
+ {
+ logprintf (LOG_VERBOSE, _("Unhandled errno %d\n"), errno);
+ break;
+ }
+ }
+
+ xfree(in_save);
+ iconv_close(cd);
+ IF_DEBUG
+ {
+ /* not not print out embedded passwords, in_org might be an URL */
+ if (!strchr(in_org, '@') && !strchr(*out, '@'))
+ debug_logprintf ("converted '%s' (%s) -> '%s' (%s)\n", in_org, fromcode, *out, tocode);
+ else
+ debug_logprintf ("logging suppressed, strings may contain password\n");
+ }
+ return false;
+}
+#else
+static bool
+do_conversion (const char *tocode _GL_UNUSED, const char *fromcode _GL_UNUSED,
+ char const *in_org _GL_UNUSED, size_t inlen _GL_UNUSED, char **out)
+{
+ *out = NULL;
+ return false;
+}
+#endif
+
+/* Try converting string str from locale to UTF-8. Return a new string
+ on success, or str on error or if conversion isn't needed. */
+const char *
+locale_to_utf8 (const char *str)
+{
+ char *new;
+
+ /* That shouldn't happen, just in case */
+ if (!opt.locale)
+ {
+ logprintf (LOG_VERBOSE, _("locale_to_utf8: locale is unset\n"));
+ opt.locale = find_locale ();
+ }
+
+ if (!opt.locale || !c_strcasecmp (opt.locale, "utf-8"))
+ return str;
+
+ if (do_conversion ("UTF-8", opt.locale, (char *) str, strlen ((char *) str), &new))
+ return (const char *) new;
+
+ xfree (new);
+ return str;
+}
+
+/* Try to "ASCII encode" UTF-8 host. Return the new domain on success or NULL
+ on error. */
+char *
+idn_encode (const struct iri *i, const char *host)
+{
+ int ret;
+ char *ascii_encoded;
+ char *utf8_encoded = NULL;
+ const char *src;
+#if IDN2_VERSION_NUMBER < 0x00140000
+ uint8_t *lower;
+ size_t len = 0;
+#endif
+
+ /* Encode to UTF-8 if not done */
+ if (!i->utf8_encode)
+ {
+ if (!remote_to_utf8 (i, host, &utf8_encoded))
+ return NULL; /* Nothing to encode or an error occurred */
+ src = utf8_encoded;
+ }
+ else
+ src = host;
+
+#if IDN2_VERSION_NUMBER >= 0x00140000
+ /* IDN2_TRANSITIONAL implies input NFC encoding */
+ ret = idn2_lookup_u8 ((uint8_t *) src, (uint8_t **) &ascii_encoded, IDN2_NONTRANSITIONAL);
+ if (ret != IDN2_OK)
+ /* fall back to TR46 Transitional mode, max IDNA2003 compatibility */
+ ret = idn2_lookup_u8 ((uint8_t *) src, (uint8_t **) &ascii_encoded, IDN2_TRANSITIONAL);
+
+ if (ret != IDN2_OK)
+ logprintf (LOG_VERBOSE, _("idn_encode failed (%d): %s\n"), ret,
+ quote (idn2_strerror (ret)));
+#else
+ /* we need a conversion to lowercase */
+ lower = u8_tolower ((uint8_t *) src, u8_strlen ((uint8_t *) src) + 1, 0, UNINORM_NFKC, NULL, &len);
+ if (!lower)
+ {
+ logprintf (LOG_VERBOSE, _("Failed to convert to lower: %d: %s\n"),
+ errno, quote (src));
+ xfree (utf8_encoded);
+ return NULL;
+ }
+
+ if ((ret = idn2_lookup_u8 (lower, (uint8_t **) &ascii_encoded, IDN2_NFC_INPUT)) != IDN2_OK)
+ {
+ logprintf (LOG_VERBOSE, _("idn_encode failed (%d): %s\n"), ret,
+ quote (idn2_strerror (ret)));
+ }
+
+ xfree (lower);
+#endif
+
+ xfree (utf8_encoded);
+
+ if (ret == IDN2_OK && ascii_encoded)
+ {
+ char *tmp = xstrdup (ascii_encoded);
+ idn2_free (ascii_encoded);
+ ascii_encoded = tmp;
+ }
+
+ return ret == IDN2_OK ? ascii_encoded : NULL;
+}
+
+/* Try to decode an "ASCII encoded" host. Return the new domain in the locale
+ on success or NULL on error. */
+char *
+idn_decode (const char *host)
+{
+/*
+ char *new;
+ int ret;
+
+ ret = idn2_register_u8 (NULL, host, (uint8_t **) &new, 0);
+ if (ret != IDN2_OK)
+ {
+ logprintf (LOG_VERBOSE, _("idn2_register_u8 failed (%d): %s: %s\n"), ret,
+ quote (idn2_strerror (ret)), host);
+ return NULL;
+ }
+
+ return new;
+*/
+ /* idn2_register_u8() just works label by label.
+ * That is pretty much overhead for just displaying the original ulabels.
+ * To keep at least the debug output format, return a cloned host. */
+ return xstrdup(host);
+}
+
+/* Try to transcode string str from remote encoding to UTF-8. On success, *new
+ contains the transcoded string. *new content is unspecified otherwise. */
+bool
+remote_to_utf8 (const struct iri *iri, const char *str, char **new)
+{
+ bool ret = false;
+
+ if (!iri->uri_encoding)
+ return false;
+
+ /* When `i->uri_encoding' == "UTF-8" there is nothing to convert. But we must
+ test for non-ASCII symbols for correct hostname processing in `idn_encode'
+ function. */
+ if (!c_strcasecmp (iri->uri_encoding, "UTF-8"))
+ {
+ const unsigned char *p;
+ for (p = (unsigned char *) str; *p; p++)
+ if (*p > 127)
+ {
+ *new = strdup (str);
+ return true;
+ }
+ return false;
+ }
+
+ if (do_conversion ("UTF-8", iri->uri_encoding, str, strlen (str), new))
+ ret = true;
+
+ /* Test if something was converted */
+ if (*new && !strcmp (str, *new))
+ {
+ xfree (*new);
+ return false;
+ }
+
+ return ret;
+}
+
+/* Allocate a new iri structure and return a pointer to it. */
+struct iri *
+iri_new (void)
+{
+ struct iri *i = xmalloc (sizeof *i);
+ i->uri_encoding = opt.encoding_remote ? xstrdup (opt.encoding_remote) : NULL;
+ i->content_encoding = NULL;
+ i->orig_url = NULL;
+ i->utf8_encode = opt.enable_iri;
+ return i;
+}
+
+struct iri *iri_dup (const struct iri *src)
+{
+ struct iri *i = xmalloc (sizeof *i);
+ i->uri_encoding = src->uri_encoding ? xstrdup (src->uri_encoding) : NULL;
+ i->content_encoding = (src->content_encoding ?
+ xstrdup (src->content_encoding) : NULL);
+ i->orig_url = src->orig_url ? xstrdup (src->orig_url) : NULL;
+ i->utf8_encode = src->utf8_encode;
+ return i;
+}
+
+/* Completely free an iri structure. */
+void
+iri_free (struct iri *i)
+{
+ if (i)
+ {
+ xfree (i->uri_encoding);
+ xfree (i->content_encoding);
+ xfree (i->orig_url);
+ xfree (i);
+ }
+}
+
+/* Set uri_encoding of struct iri i. If a remote encoding was specified, use
+ it unless force is true. */
+void
+set_uri_encoding (struct iri *i, const char *charset, bool force)
+{
+ DEBUGP (("URI encoding = %s\n", charset ? quote (charset) : "None"));
+ if (!force && opt.encoding_remote)
+ return;
+ if (i->uri_encoding)
+ {
+ if (charset && !c_strcasecmp (i->uri_encoding, charset))
+ return;
+ xfree (i->uri_encoding);
+ }
+
+ i->uri_encoding = charset ? xstrdup (charset) : NULL;
+}
+
+/* Set content_encoding of struct iri i. */
+void
+set_content_encoding (struct iri *i, const char *charset)
+{
+ DEBUGP (("URI content encoding = %s\n", charset ? quote (charset) : "None"));
+ if (opt.encoding_remote)
+ return;
+ if (i->content_encoding)
+ {
+ if (charset && !c_strcasecmp (i->content_encoding, charset))
+ return;
+ xfree (i->content_encoding);
+ }
+
+ i->content_encoding = charset ? xstrdup (charset) : NULL;
+}
diff --git a/src/iri.h b/src/iri.h
new file mode 100644
index 0000000..c6b75e8
--- /dev/null
+++ b/src/iri.h
@@ -0,0 +1,75 @@
+/* Internationalization related declarations.
+ Copyright (C) 2008-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef IRI_H
+#define IRI_H
+
+struct iri {
+ char *uri_encoding; /* Encoding of the uri to fetch */
+ char *content_encoding; /* Encoding of links inside the fetched file */
+ char *orig_url; /* */
+ bool utf8_encode; /* Will/Is the current url encoded in utf8 */
+};
+
+#ifdef ENABLE_IRI
+
+char *parse_charset (const char *str);
+const char *find_locale (void);
+bool check_encoding_name (const char *encoding);
+const char *locale_to_utf8 (const char *str);
+char *idn_encode (const struct iri *i, const char *host);
+char *idn_decode (const char *host);
+bool remote_to_utf8 (const struct iri *i, const char *str, char **newstr);
+struct iri *iri_new (void);
+struct iri *iri_dup (const struct iri *);
+void iri_free (struct iri *i);
+void set_uri_encoding (struct iri *i, const char *charset, bool force);
+void set_content_encoding (struct iri *i, const char *charset);
+
+#else /* ENABLE_IRI */
+
+extern struct iri dummy_iri;
+
+#define parse_charset(str) NULL
+#define find_locale() NULL
+#define check_encoding_name(str) false
+#define locale_to_utf8(str) (str)
+#define idn_encode(a,b) NULL
+#define idn_decode(str) NULL
+#define idn2_free(str) ((void)0)
+#define remote_to_utf8(a,b,c) false
+#define iri_new() (&dummy_iri)
+#define iri_dup(a) (&dummy_iri)
+#define iri_free(a)
+#define set_uri_encoding(a,b,c)
+#define set_content_encoding(a,b)
+
+#endif /* ENABLE_IRI */
+#endif /* IRI_H */
diff --git a/src/log.c b/src/log.c
new file mode 100644
index 0000000..7de23ee
--- /dev/null
+++ b/src/log.c
@@ -0,0 +1,995 @@
+/* Messages logging.
+ Copyright (C) 1998-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <assert.h>
+#include <errno.h>
+
+#include "utils.h"
+#include "exits.h"
+#include "log.h"
+
+/* 2005-10-25 SMS.
+ VMS log files are often VFC record format, not stream, so fputs() can
+ produce multiple records, even when there's no newline terminator in
+ the buffer. The result is unsightly output with spurious newlines.
+ Using fprintf() instead of fputs(), along with inhibiting some
+ fflush() activity below, seems to solve the problem.
+*/
+#ifdef __VMS
+# define FPUTS( s, f) fprintf( (f), "%s", (s))
+#else /* def __VMS */
+# define FPUTS( s, f) fputs( (s), (f))
+#endif /* def __VMS [else] */
+
+/* This file implements support for "logging". Logging means printing
+ output, plus several additional features:
+
+ - Cataloguing output by importance. You can specify that a log
+ message is "verbose" or "debug", and it will not be printed unless
+ in verbose or debug mode, respectively.
+
+ - Redirecting the log to the file. When Wget's output goes to the
+ terminal, and Wget receives SIGHUP, all further output is
+ redirected to a log file. When this is the case, Wget can also
+ print the last several lines of "context" to the log file so that
+ it does not begin in the middle of a line. For this to work, the
+ logging code stores the last several lines of context. Callers may
+ request for certain output not to be stored.
+
+ - Inhibiting output. When Wget receives SIGHUP, but redirecting
+ the output fails, logging is inhibited. */
+
+
+/* The file descriptor used for logging. This is NULL before log_init
+ is called; logging functions log to stderr then. log_init sets it
+ either to stderr or to a file pointer obtained from fopen(). If
+ logging is inhibited, logfp is set back to NULL. */
+static FILE *logfp;
+
+/* Descriptor of the stdout|stderr */
+static FILE *stdlogfp;
+
+/* Descriptor of the wget.log* file (if created) */
+static FILE *filelogfp;
+
+/* Name of log file */
+static char *logfile;
+
+/* Is interactive shell ? */
+static int shell_is_interactive;
+
+/* A second file descriptor pointing to the temporary log file for the
+ WARC writer. If WARC writing is disabled, this is NULL. */
+static FILE *warclogfp;
+
+/* If true, it means logging is inhibited, i.e. nothing is printed or
+ stored. */
+static bool inhibit_logging;
+
+/* Whether the last output lines are stored for use as context. */
+static bool save_context_p;
+
+/* Whether the log is flushed after each command. */
+static bool flush_log_p = true;
+
+/* Whether any output has been received while flush_log_p was 0. */
+static bool needs_flushing;
+
+/* In the event of a hang-up, and if its output was on a TTY, Wget
+ redirects its output to `wget-log'.
+
+ For the convenience of reading this newly-created log, we store the
+ last several lines ("screenful", hence the choice of 24) of Wget
+ output, and dump them as context when the time comes. */
+#define SAVED_LOG_LINES 24
+
+/* log_lines is a circular buffer that stores SAVED_LOG_LINES lines of
+ output. log_line_current always points to the position in the
+ buffer that will be written to next. When log_line_current reaches
+ SAVED_LOG_LINES, it is reset to zero.
+
+ The problem here is that we'd have to either (re)allocate and free
+ strings all the time, or limit the lines to an arbitrary number of
+ characters. Instead of settling for either of these, we do both:
+ if the line is smaller than a certain "usual" line length (128
+ chars by default), a preallocated memory is used. The rare lines
+ that are longer than 128 characters are malloc'ed and freed
+ separately. This gives good performance with minimum memory
+ consumption and fragmentation. */
+
+#define STATIC_LENGTH 128
+
+static struct log_ln {
+ char static_line[STATIC_LENGTH + 1]; /* statically allocated
+ line. */
+ char *malloced_line; /* malloc'ed line, for lines of output
+ larger than 80 characters. */
+ char *content; /* this points either to malloced_line
+ or to the appropriate static_line.
+ If this is NULL, it means the line
+ has not yet been used. */
+} log_lines[SAVED_LOG_LINES];
+
+/* The current position in the ring. */
+static int log_line_current = -1;
+
+/* Whether the most recently written line was "trailing", i.e. did not
+ finish with \n. This is an important piece of information because
+ the code is always careful to append data to trailing lines, rather
+ than create new ones. */
+static bool trailing_line;
+
+static void check_redirect_output (void);
+
+#define ROT_ADVANCE(num) do { \
+ if (++num >= SAVED_LOG_LINES) \
+ num = 0; \
+} while (0)
+
+/* Free the log line index with NUM. This calls free on
+ ln->malloced_line if it's non-NULL, and it also resets
+ ln->malloced_line and ln->content to NULL. */
+
+static void
+free_log_line (int num)
+{
+ struct log_ln *ln = log_lines + num;
+ xfree (ln->malloced_line);
+ ln->content = NULL;
+}
+
+/* Append bytes in the range [start, end) to one line in the log. The
+ region is not supposed to contain newlines, except for the last
+ character (at end[-1]). */
+
+static void
+saved_append_1 (const char *start, const char *end)
+{
+ int len = end - start;
+ if (!len)
+ return;
+
+ /* First, check whether we need to append to an existing line or to
+ create a new one. */
+ if (!trailing_line)
+ {
+ /* Create a new line. */
+ struct log_ln *ln;
+
+ if (log_line_current == -1)
+ log_line_current = 0;
+ else
+ free_log_line (log_line_current);
+ ln = log_lines + log_line_current;
+ if (len > STATIC_LENGTH)
+ {
+ ln->malloced_line = strdupdelim (start, end);
+ ln->content = ln->malloced_line;
+ }
+ else
+ {
+ memcpy (ln->static_line, start, len);
+ ln->static_line[len] = '\0';
+ ln->content = ln->static_line;
+ }
+ }
+ else
+ {
+ /* Append to the last line. If the line is malloc'ed, we just
+ call realloc and append the new string. If the line is
+ static, we have to check whether appending the new string
+ would make it exceed STATIC_LENGTH characters, and if so,
+ convert it to malloc(). */
+ struct log_ln *ln = log_lines + log_line_current;
+ if (ln->malloced_line)
+ {
+ /* Resize malloc'ed line and append. */
+ int old_len = strlen (ln->malloced_line);
+ ln->malloced_line = xrealloc (ln->malloced_line, old_len + len + 1);
+ memcpy (ln->malloced_line + old_len, start, len);
+ ln->malloced_line[old_len + len] = '\0';
+ /* might have changed due to realloc */
+ ln->content = ln->malloced_line;
+ }
+ else
+ {
+ int old_len = strlen (ln->static_line);
+ if (old_len + len > STATIC_LENGTH)
+ {
+ /* Allocate memory and concatenate the old and the new
+ contents. */
+ ln->malloced_line = xmalloc (old_len + len + 1);
+ memcpy (ln->malloced_line, ln->static_line,
+ old_len);
+ memcpy (ln->malloced_line + old_len, start, len);
+ ln->malloced_line[old_len + len] = '\0';
+ ln->content = ln->malloced_line;
+ }
+ else
+ {
+ /* Just append to the old, statically allocated
+ contents. */
+ memcpy (ln->static_line + old_len, start, len);
+ ln->static_line[old_len + len] = '\0';
+ ln->content = ln->static_line;
+ }
+ }
+ }
+ trailing_line = !(end[-1] == '\n');
+ if (!trailing_line)
+ ROT_ADVANCE (log_line_current);
+}
+
+/* Log the contents of S, as explained above. If S consists of
+ multiple lines, they are logged separately. If S does not end with
+ a newline, it will form a "trailing" line, to which things will get
+ appended the next time this function is called. */
+
+static void
+saved_append (const char *s)
+{
+ while (*s)
+ {
+ const char *end = strchr (s, '\n');
+ if (!end)
+ end = s + strlen (s);
+ else
+ ++end;
+ saved_append_1 (s, end);
+ s = end;
+ }
+}
+
+/* Check X against opt.verbose and opt.quiet. The semantics is as
+ follows:
+
+ * LOG_ALWAYS - print the message unconditionally;
+
+ * LOG_NOTQUIET - print the message if opt.quiet is non-zero;
+
+ * LOG_NONVERBOSE - print the message if opt.verbose is zero;
+
+ * LOG_VERBOSE - print the message if opt.verbose is non-zero. */
+#define CHECK_VERBOSE(x) \
+ switch (x) \
+ { \
+ case LOG_PROGRESS: \
+ if (!opt.show_progress) \
+ return; \
+ break; \
+ case LOG_ALWAYS: \
+ break; \
+ case LOG_NOTQUIET: \
+ if (opt.quiet) \
+ return; \
+ break; \
+ case LOG_NONVERBOSE: \
+ if (opt.verbose || opt.quiet) \
+ return; \
+ break; \
+ case LOG_VERBOSE: \
+ if (!opt.verbose) \
+ return; \
+ }
+
+/* Returns the file descriptor for logging. This is LOGFP, except if
+ called before log_init, in which case it returns stderr. This is
+ useful in case someone calls a logging function before log_init.
+
+ If logging is inhibited, return NULL. */
+
+static FILE *
+get_log_fp (void)
+{
+ if (inhibit_logging)
+ return NULL;
+ if (logfp)
+ return logfp;
+ return stderr;
+}
+
+static FILE *
+get_progress_fp (void)
+{
+ if (opt.show_progress == true)
+ return stderr;
+ return get_log_fp();
+}
+
+/* Returns the file descriptor for the secondary log file. This is
+ WARCLOGFP, except if called before log_init, in which case it
+ returns stderr. This is useful in case someone calls a logging
+ function before log_init.
+
+ If logging is inhibited, return NULL. */
+
+static FILE *
+get_warc_log_fp (void)
+{
+ if (inhibit_logging)
+ return NULL;
+ if (warclogfp)
+ return warclogfp;
+ if (logfp)
+ return NULL;
+ return stderr;
+}
+
+/* Sets the file descriptor for the secondary log file. */
+
+void
+log_set_warc_log_fp (FILE * fp)
+{
+ warclogfp = fp;
+}
+
+/* Log a literal string S. The string is logged as-is, without a
+ newline appended. */
+
+void
+logputs (enum log_options o, const char *s)
+{
+ FILE *fp;
+ FILE *warcfp;
+ int errno_save = errno;
+
+ check_redirect_output ();
+ if (o == LOG_PROGRESS)
+ fp = get_progress_fp ();
+ else
+ fp = get_log_fp ();
+
+ errno = errno_save;
+
+ if (fp == NULL)
+ return;
+
+ warcfp = get_warc_log_fp ();
+ errno = errno_save;
+
+ CHECK_VERBOSE (o);
+
+ FPUTS (s, fp);
+ if (warcfp != NULL)
+ FPUTS (s, warcfp);
+ if (save_context_p)
+ saved_append (s);
+ if (flush_log_p)
+ logflush ();
+ else
+ needs_flushing = true;
+
+ errno = errno_save;
+}
+
+struct logvprintf_state {
+ char *bigmsg;
+ int expected_size;
+ int allocated;
+};
+
+/* Print a message to the log. A copy of message will be saved to
+ saved_log, for later reusal by log_dump_context().
+
+ Normally we'd want this function to loop around vsnprintf until
+ sufficient room is allocated, as the Linux man page recommends.
+ However each call to vsnprintf() must be preceded by va_start and
+ followed by va_end. Since calling va_start/va_end is possible only
+ in the function that contains the `...' declaration, we cannot call
+ vsnprintf more than once. Therefore this function saves its state
+ to logvprintf_state and signals the parent to call it again.
+
+ (An alternative approach would be to use va_copy, but that's not
+ portable.) */
+
+static bool GCC_FORMAT_ATTR (2, 0)
+log_vprintf_internal (struct logvprintf_state *state, const char *fmt,
+ va_list args)
+{
+ char smallmsg[128];
+ char *write_ptr = smallmsg;
+ int available_size = sizeof (smallmsg);
+ int numwritten;
+ FILE *fp = get_log_fp ();
+ FILE *warcfp = get_warc_log_fp ();
+
+ if (fp == NULL)
+ return false;
+
+ if (!save_context_p && warcfp == NULL)
+ {
+ /* In the simple case just call vfprintf(), to avoid needless
+ allocation and games with vsnprintf(). */
+ vfprintf (fp, fmt, args);
+ goto flush;
+ }
+
+ if (state->allocated != 0)
+ {
+ write_ptr = state->bigmsg;
+ available_size = state->allocated;
+ }
+
+ /* The GNU coding standards advise not to rely on the return value
+ of sprintf(). However, vsnprintf() is a relatively new function
+ missing from legacy systems. Therefore I consider it safe to
+ assume that its return value is meaningful. On the systems where
+ vsnprintf() is not available, we use the implementation from
+ snprintf.c which does return the correct value. */
+ numwritten = vsnprintf (write_ptr, available_size, fmt, args);
+
+ /* vsnprintf() will not step over the limit given by available_size.
+ If it fails, it returns either -1 (older implementations) or the
+ number of characters (not counting the terminating \0) that
+ *would have* been written if there had been enough room (C99).
+ In the former case, we double available_size and malloc to get a
+ larger buffer, and try again. In the latter case, we use the
+ returned information to build a buffer of the correct size. */
+
+ if (numwritten == -1)
+ {
+ /* Writing failed, and we don't know the needed size. Try
+ again with doubled size. */
+ int newsize = available_size << 1;
+ state->bigmsg = xrealloc (state->bigmsg, newsize);
+ state->allocated = newsize;
+ return false;
+ }
+ else if (numwritten >= available_size)
+ {
+ /* Writing failed, but we know exactly how much space we
+ need. */
+ int newsize = numwritten + 1;
+ state->bigmsg = xrealloc (state->bigmsg, newsize);
+ state->allocated = newsize;
+ return false;
+ }
+
+ /* Writing succeeded. */
+ if (save_context_p)
+ saved_append (write_ptr);
+ FPUTS (write_ptr, fp);
+ if (warcfp != NULL && warcfp != fp)
+ FPUTS (write_ptr, warcfp);
+ xfree (state->bigmsg);
+
+ flush:
+ if (flush_log_p)
+ logflush ();
+ else
+ needs_flushing = true;
+
+ return true;
+}
+
+/* Flush LOGFP. Useful while flushing is disabled. */
+void
+logflush (void)
+{
+ FILE *fp = get_log_fp ();
+ FILE *warcfp = get_warc_log_fp ();
+ if (fp)
+ {
+/* 2005-10-25 SMS.
+ On VMS, flush only for a terminal. See note at FPUTS macro, above.
+*/
+#ifdef __VMS
+ if (isatty( fileno( fp)))
+ {
+ fflush (fp);
+ }
+#else /* def __VMS */
+ fflush (fp);
+#endif /* def __VMS [else] */
+ }
+
+ if (warcfp != NULL)
+ fflush (warcfp);
+
+ needs_flushing = false;
+}
+
+/* Enable or disable log flushing. */
+void
+log_set_flush (bool flush)
+{
+ if (flush == flush_log_p)
+ return;
+
+ if (flush == false)
+ {
+ /* Disable flushing by setting flush_log_p to 0. */
+ flush_log_p = false;
+ }
+ else
+ {
+ /* Re-enable flushing. If anything was printed in no-flush mode,
+ flush the log now. */
+ if (needs_flushing)
+ logflush ();
+ flush_log_p = true;
+ }
+}
+
+/* (Temporarily) disable storing log to memory. Returns the old
+ status of storing, with which this function can be called again to
+ reestablish storing. */
+
+bool
+log_set_save_context (bool savep)
+{
+ bool old = save_context_p;
+ save_context_p = savep;
+ return old;
+}
+
+/* Print a message to the screen or to the log. The first argument
+ defines the verbosity of the message, and the rest are as in
+ printf(3). */
+
+void
+logprintf (enum log_options o, const char *fmt, ...)
+{
+ va_list args;
+ struct logvprintf_state lpstate;
+ bool done;
+ int errno_saved = errno;
+
+ check_redirect_output ();
+ errno = errno_saved;
+ if (inhibit_logging)
+ return;
+ CHECK_VERBOSE (o);
+
+ xzero (lpstate);
+ errno = 0;
+ do
+ {
+ va_start (args, fmt);
+ done = log_vprintf_internal (&lpstate, fmt, args);
+ va_end (args);
+
+ if (done && errno == EPIPE)
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ while (!done);
+
+ errno = errno_saved;
+}
+
+#ifdef ENABLE_DEBUG
+/* The same as logprintf(), but does anything only if opt.debug is
+ true. */
+void
+debug_logprintf (const char *fmt, ...)
+{
+ if (opt.debug)
+ {
+ va_list args;
+ struct logvprintf_state lpstate;
+ bool done;
+
+#ifndef TESTING
+ check_redirect_output ();
+#endif
+ if (inhibit_logging)
+ return;
+
+ xzero (lpstate);
+ do
+ {
+ va_start (args, fmt);
+ done = log_vprintf_internal (&lpstate, fmt, args);
+ va_end (args);
+ }
+ while (!done);
+ }
+}
+#endif /* ENABLE_DEBUG */
+
+/* Open FILE and set up a logging stream. If FILE cannot be opened,
+ exit with status of 1. */
+void
+log_init (const char *file, bool appendp)
+{
+ if (file)
+ {
+ if (HYPHENP (file))
+ {
+ stdlogfp = stdout;
+ logfp = stdlogfp;
+ }
+ else
+ {
+ filelogfp = fopen (file, appendp ? "a" : "w");
+ if (!filelogfp)
+ {
+ fprintf (stderr, "%s: %s: %s\n", exec_name, file, strerror (errno));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ logfp = filelogfp;
+ }
+ }
+ else
+ {
+ /* The log goes to stderr to avoid collisions with the output if
+ the user specifies `-O -'. #### Francois Pinard suggests
+ that it's a better idea to print to stdout by default, and to
+ stderr only if the user actually specifies `-O -'. He says
+ this inconsistency is harder to document, but is overall
+ easier on the user. */
+ stdlogfp = stderr;
+ logfp = stdlogfp;
+
+ if (1
+#ifdef HAVE_ISATTY
+ && isatty (fileno (logfp))
+#endif
+ )
+ {
+ /* If the output is a TTY, enable save context, i.e. store
+ the most recent several messages ("context") and dump
+ them to a log file in case SIGHUP or SIGUSR1 is received
+ (or Ctrl+Break is pressed under Windows). */
+ save_context_p = true;
+ }
+ }
+
+#ifndef WINDOWS
+ /* Initialize this values so we don't have to ask every time we print line */
+ shell_is_interactive = isatty (STDIN_FILENO);
+#endif
+}
+
+/* Close LOGFP (only if we opened it, not if it's stderr), inhibit
+ further logging and free the memory associated with it. */
+void
+log_close (void)
+{
+ int i;
+
+ if (logfp && logfp != stderr && logfp != stdout)
+ {
+ if (logfp == stdlogfp)
+ stdlogfp = NULL;
+ if (logfp == filelogfp)
+ filelogfp = NULL;
+ fclose (logfp);
+ }
+ logfp = NULL;
+
+ inhibit_logging = true;
+ save_context_p = false;
+
+ for (i = 0; i < SAVED_LOG_LINES; i++)
+ free_log_line (i);
+ log_line_current = -1;
+ trailing_line = false;
+}
+
+/* Dump saved lines to logfp. */
+static void
+log_dump_context (void)
+{
+ int num = log_line_current;
+ FILE *fp = get_log_fp ();
+ FILE *warcfp = get_warc_log_fp ();
+ if (!fp)
+ return;
+
+ if (num == -1)
+ return;
+ if (trailing_line)
+ ROT_ADVANCE (num);
+ do
+ {
+ struct log_ln *ln = log_lines + num;
+ if (ln->content)
+ {
+ FPUTS (ln->content, fp);
+ if (warcfp != NULL)
+ FPUTS (ln->content, warcfp);
+ }
+ ROT_ADVANCE (num);
+ }
+ while (num != log_line_current);
+ if (trailing_line)
+ if (log_lines[log_line_current].content)
+ {
+ FPUTS (log_lines[log_line_current].content, fp);
+ if (warcfp != NULL)
+ FPUTS (log_lines[log_line_current].content, warcfp);
+ }
+ fflush (fp);
+ fflush (warcfp);
+}
+
+/* String escape functions. */
+
+/* Return the number of non-printable characters in SOURCE.
+ Non-printable characters are determined as per c-ctype.c. */
+
+static int
+count_nonprint (const char *source)
+{
+ const char *p;
+ int cnt;
+ for (p = source, cnt = 0; *p; p++)
+ if (!c_isprint (*p))
+ ++cnt;
+ return cnt;
+}
+
+/* Copy SOURCE to DEST, escaping non-printable characters.
+
+ Non-printable refers to anything outside the non-control ASCII
+ range (32-126) which means that, for example, CR, LF, and TAB are
+ considered non-printable along with ESC, BS, and other control
+ chars. This is by design: it makes sure that messages from remote
+ servers cannot be easily used to deceive the users by mimicking
+ Wget's output. Disallowing non-ASCII characters is another
+ necessary security measure, which makes sure that remote servers
+ cannot garble the screen or guess the local charset and perform
+ homographic attacks.
+
+ Of course, the above mandates that escnonprint only be used in
+ contexts expected to be ASCII, such as when printing host names,
+ URL components, HTTP headers, FTP server messages, and the like.
+
+ ESCAPE is the leading character of the escape sequence. BASE
+ should be the base of the escape sequence, and must be either 8 for
+ octal or 16 for hex.
+
+ DEST must point to a location with sufficient room to store an
+ encoded version of SOURCE. */
+
+static void
+copy_and_escape (const char *source, char *dest, char escape, int base)
+{
+ const char *from = source;
+ char *to = dest;
+ unsigned char c;
+
+ /* Copy chars from SOURCE to DEST, escaping non-printable ones. */
+ switch (base)
+ {
+ case 8:
+ while ((c = *from++) != '\0')
+ if (c_isprint (c))
+ *to++ = c;
+ else
+ {
+ *to++ = escape;
+ *to++ = '0' + (c >> 6);
+ *to++ = '0' + ((c >> 3) & 7);
+ *to++ = '0' + (c & 7);
+ }
+ break;
+ case 16:
+ while ((c = *from++) != '\0')
+ if (c_isprint (c))
+ *to++ = c;
+ else
+ {
+ *to++ = escape;
+ *to++ = XNUM_TO_DIGIT (c >> 4);
+ *to++ = XNUM_TO_DIGIT (c & 0xf);
+ }
+ break;
+ default:
+ abort ();
+ }
+ *to = '\0';
+}
+
+#define RING_SIZE 3
+struct ringel {
+ char *buffer;
+ int size;
+};
+static struct ringel ring[RING_SIZE]; /* ring data */
+
+static const char *
+escnonprint_internal (const char *str, char escape, int base)
+{
+ static int ringpos; /* current ring position */
+ int nprcnt;
+
+ assert (base == 8 || base == 16);
+
+ nprcnt = count_nonprint (str);
+ if (nprcnt == 0)
+ /* If there are no non-printable chars in STR, don't bother
+ copying anything, just return STR. */
+ return str;
+
+ {
+ /* Set up a pointer to the current ring position, so we can write
+ simply r->X instead of ring[ringpos].X. */
+ struct ringel *r = ring + ringpos;
+
+ /* Every non-printable character is replaced with the escape char
+ and three (or two, depending on BASE) *additional* chars. Size
+ must also include the length of the original string and one
+ additional char for the terminating \0. */
+ int needed_size = strlen (str) + 1 + (base == 8 ? 3 * nprcnt : 2 * nprcnt);
+
+ /* If the current buffer is uninitialized or too small,
+ (re)allocate it. */
+ if (r->buffer == NULL || r->size < needed_size)
+ {
+ r->buffer = xrealloc (r->buffer, needed_size);
+ r->size = needed_size;
+ }
+
+ copy_and_escape (str, r->buffer, escape, base);
+ ringpos = (ringpos + 1) % RING_SIZE;
+ return r->buffer;
+ }
+}
+
+/* Return a pointer to a static copy of STR with the non-printable
+ characters escaped as \ooo. If there are no non-printable
+ characters in STR, STR is returned. See copy_and_escape for more
+ information on which characters are considered non-printable.
+
+ DON'T call this function on translated strings because escaping
+ will break them. Don't call it on literal strings from the source,
+ which are by definition trusted. If newlines are allowed in the
+ string, escape and print it line by line because escaping the whole
+ string will convert newlines to \012. (This is so that expectedly
+ single-line messages cannot use embedded newlines to mimic Wget's
+ output and deceive the user.)
+
+ escnonprint doesn't quote its escape character because it is notf
+ meant as a general and reversible quoting mechanism, but as a quick
+ way to defang binary junk sent by malicious or buggy servers.
+
+ NOTE: since this function can return a pointer to static data, be
+ careful to copy its result before calling it again. However, to be
+ more useful with printf, it maintains an internal ring of static
+ buffers to return. Currently the ring size is 3, which means you
+ can print up to three values in the same printf; if more is needed,
+ bump RING_SIZE. */
+
+const char *
+escnonprint (const char *str)
+{
+ return escnonprint_internal (str, '\\', 8);
+}
+
+/* Return a pointer to a static copy of STR with the non-printable
+ characters escaped as %XX. If there are no non-printable
+ characters in STR, STR is returned.
+
+ See escnonprint for usage details. */
+
+const char *
+escnonprint_uri (const char *str)
+{
+ return escnonprint_internal (str, '%', 16);
+}
+
+#if defined DEBUG_MALLOC || defined TESTING
+void
+log_cleanup (void)
+{
+ size_t i;
+ for (i = 0; i < countof (ring); i++)
+ xfree (ring[i].buffer);
+}
+#endif
+
+/* When SIGHUP or SIGUSR1 are received, the output is redirected
+ elsewhere. Such redirection is only allowed once. */
+static const char *redirect_request_signal_name;
+
+/* Redirect output to `wget-log' or back to stdout/stderr. */
+
+void
+redirect_output (bool to_file, const char *signal_name)
+{
+ if (to_file && logfp != filelogfp)
+ {
+ if (signal_name)
+ {
+ fprintf (stderr, "\n%s received.", signal_name);
+ }
+ if (!filelogfp)
+ {
+ filelogfp = unique_create (DEFAULT_LOGFILE, false, &logfile);
+ if (filelogfp)
+ {
+ fprintf (stderr, _("\nRedirecting output to %s.\n"),
+ quote (logfile));
+ /* Store signal name to tell wget it's permanent redirect to log file */
+ redirect_request_signal_name = signal_name;
+ logfp = filelogfp;
+ /* Dump the context output to the newly opened log. */
+ log_dump_context ();
+ }
+ else
+ {
+ /* Eek! Opening the alternate log file has failed. Nothing we
+ can do but disable printing completely. */
+ fprintf (stderr, _("%s: %s; disabling logging.\n"),
+ (logfile) ? logfile : DEFAULT_LOGFILE, strerror (errno));
+ inhibit_logging = true;
+ }
+ }
+ else
+ {
+ fprintf (stderr, _("\nRedirecting output to %s.\n"),
+ quote (logfile));
+ logfp = filelogfp;
+ log_dump_context ();
+ }
+ }
+ else if (!to_file && logfp != stdlogfp)
+ {
+ logfp = stdlogfp;
+ log_dump_context ();
+ }
+}
+
+/* Check whether there's a need to redirect output. */
+
+static void
+check_redirect_output (void)
+{
+#if !defined(WINDOWS) && !defined(__VMS)
+ /* If it was redirected already to log file by SIGHUP, SIGUSR1 or -o parameter,
+ * it was permanent.
+ * If there was no SIGHUP or SIGUSR1 and shell is interactive
+ * we check if process is fg or bg before every line is printed.*/
+ if (!redirect_request_signal_name && shell_is_interactive && !opt.lfilename)
+ {
+ pid_t foreground_pgrp = tcgetpgrp (STDIN_FILENO);
+
+ if (foreground_pgrp != -1 && foreground_pgrp != getpgrp () && !opt.quiet)
+ {
+ /* Process backgrounded */
+ redirect_output (true,NULL);
+ }
+ else
+ {
+ /* Process foregrounded */
+ redirect_output (false,NULL);
+ }
+ }
+#endif /* !defined(WINDOWS) && !defined(__VMS) */
+}
diff --git a/src/log.h b/src/log.h
new file mode 100644
index 0000000..40d4d88
--- /dev/null
+++ b/src/log.h
@@ -0,0 +1,60 @@
+/* Declarations for log.c.
+ Copyright (C) 1998-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef LOG_H
+#define LOG_H
+
+/* The log file to which Wget writes to after HUP. */
+#define DEFAULT_LOGFILE "wget-log"
+
+#include <stdio.h>
+
+enum log_options { LOG_VERBOSE, LOG_NOTQUIET, LOG_NONVERBOSE, LOG_ALWAYS, LOG_PROGRESS };
+
+void log_set_warc_log_fp (FILE *);
+
+void logprintf (enum log_options, const char *, ...)
+ GCC_FORMAT_ATTR (2, 3);
+void debug_logprintf (const char *, ...) GCC_FORMAT_ATTR (1, 2);
+void logputs (enum log_options, const char *);
+void logflush (void);
+void log_set_flush (bool);
+bool log_set_save_context (bool);
+
+void log_init (const char *, bool);
+void log_close (void);
+void log_cleanup (void);
+void log_request_redirect_output (const char *);
+void redirect_output (bool, const char *);
+
+const char *escnonprint (const char *);
+const char *escnonprint_uri (const char *);
+
+#endif /* LOG_H */
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..c84f6e4
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,2306 @@
+/* Command line parsing.
+ Copyright (C) 1996-2015, 2018-2020 Free Software Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <signal.h>
+#include <spawn.h>
+#if defined(ENABLE_NLS) || defined(WINDOWS)
+# include <locale.h>
+#endif
+#include <assert.h>
+#include <errno.h>
+#include <time.h>
+
+#include "exits.h"
+#include "utils.h"
+#include "init.h"
+#include "retr.h"
+#include "recur.h"
+#include "host.h"
+#include "url.h"
+#include "progress.h" /* for progress_handle_sigwinch */
+#include "convert.h"
+#include "spider.h"
+#include "http.h" /* for save_cookies */
+#include "hsts.h" /* for initializing hsts_store to NULL */
+#include "ptimer.h"
+#include "warc.h"
+#include "version.h"
+#include "c-strcase.h"
+#include "dirname.h"
+#include "xmemdup0.h"
+#include <getopt.h>
+#include <getpass.h>
+#include <quote.h>
+
+#ifdef TESTING
+/* Rename the main function so we can have a main() in fuzzing code
+ and call the original main. */
+# define main main_wget
+#endif
+
+#ifdef HAVE_METALINK
+# include <metalink/metalink_parser.h>
+# include "metalink.h"
+#endif
+
+#ifdef WINDOWS
+# include <io.h>
+# include <fcntl.h>
+#ifndef ENABLE_NLS
+# include <mbctype.h>
+#endif
+#endif
+
+#ifdef __VMS
+# include "vms.h"
+#endif /* __VMS */
+
+#ifndef PATH_SEPARATOR
+# define PATH_SEPARATOR '/'
+#endif
+
+#ifndef ENABLE_IRI
+struct iri dummy_iri;
+#endif
+
+#ifdef HAVE_LIBCARES
+#include <ares.h>
+ares_channel ares;
+#else
+void *ares;
+#endif
+
+struct options opt;
+
+/* defined in version.c */
+extern char *system_getrc;
+/* Used for --version output in print_version */
+#define MAX_CHARS_PER_LINE 72
+#define TABULATION 4
+
+const char *exec_name;
+
+/* Number of successfully downloaded URLs */
+int numurls = 0;
+
+/* Initialize I18N/L10N. That amounts to invoking setlocale, and
+ setting up gettext's message catalog using bindtextdomain and
+ textdomain. Does nothing if NLS is disabled or missing. */
+
+#if defined(SIGHUP) || defined(SIGUSR1)
+/* Hangup signal handler. When wget receives SIGHUP or SIGUSR1, it
+ will proceed operation as usual, trying to write into a log file.
+ If that is impossible, the output will be turned off. */
+
+static void
+redirect_output_signal (int sig)
+{
+ const char *signal_name = "WTF?!";
+
+#ifdef SIGHUP
+ if (sig == SIGHUP)
+ signal_name = "SIGHUP";
+#endif
+#ifdef SIGUSR1
+ if (sig == SIGUSR1)
+ signal_name = "SIGUSR1";
+#endif
+
+ redirect_output (true,signal_name);
+ progress_schedule_redirect ();
+ signal (sig, redirect_output_signal);
+}
+#endif /* defined(SIGHUP) || defined(SIGUSR1) */
+
+static void
+i18n_initialize (void)
+{
+ /* ENABLE_NLS implies existence of functions invoked here. */
+#ifdef ENABLE_NLS
+ /* Set the current locale. */
+ setlocale (LC_ALL, "");
+ /* Set the text message domain. */
+ bindtextdomain ("wget", LOCALEDIR);
+ bindtextdomain ("wget-gnulib", LOCALEDIR);
+ textdomain ("wget");
+#elif defined WINDOWS
+ char MBCP[16] = "";
+ int CP;
+
+ CP = _getmbcp(); /* Consider it's different from default. */
+ if (CP > 0)
+ snprintf(MBCP, sizeof(MBCP), ".%d", CP);
+ setlocale(LC_ALL, MBCP);
+#endif /* ENABLE_NLS */
+}
+
+#ifdef HAVE_HSTS
+/* make the HSTS store global */
+hsts_store_t hsts_store;
+
+static char*
+get_hsts_database (void)
+{
+ if (opt.hsts_file)
+ return xstrdup (opt.hsts_file);
+
+ if (opt.homedir)
+ {
+ char *dir = ajoin_dir_file(opt.homedir, ".wget-hsts");
+ return dir;
+ }
+
+ return NULL;
+}
+
+static void
+load_hsts (void)
+{
+ if (!hsts_store)
+ {
+ char *filename = get_hsts_database ();
+
+ if (filename)
+ {
+ DEBUGP (("Reading HSTS entries from %s\n", filename));
+
+ hsts_store = hsts_store_open (filename);
+
+ if (!hsts_store)
+ logprintf (LOG_NOTQUIET, "ERROR: could not open HSTS store at '%s'. "
+ "HSTS will be disabled.\n",
+ filename);
+ }
+ else
+ logprintf (LOG_NOTQUIET, "ERROR: could not open HSTS store. HSTS will be disabled.\n");
+
+ xfree (filename);
+ }
+}
+
+static void
+save_hsts (void)
+{
+ if (hsts_store)
+ {
+ char *filename = get_hsts_database ();
+
+ if (filename && hsts_store_has_changed (hsts_store))
+ {
+ DEBUGP (("Saving HSTS entries to %s\n", filename));
+ hsts_store_save (hsts_store, filename);
+ }
+
+ hsts_store_close (hsts_store);
+ xfree (hsts_store);
+
+ xfree (filename);
+ }
+}
+#endif
+
+/* Definition of command-line options. */
+
+_Noreturn static void print_help (void);
+_Noreturn static void print_version (void);
+
+#ifdef HAVE_SSL
+# define IF_SSL(a,b,c,d,e) { a, b, c, d , e },
+#else
+# define IF_SSL(a,b,c,d,e)
+#endif
+
+struct cmdline_option {
+ char long_name[MAX_LONGOPTION];
+ char short_name;
+ enum {
+ OPT_VALUE,
+ OPT_BOOLEAN,
+ OPT_FUNCALL,
+ /* Non-standard options that have to be handled specially in
+ main(). */
+ OPT__APPEND_OUTPUT,
+ OPT__CLOBBER,
+ OPT__DONT_REMOVE_LISTING,
+ OPT__EXECUTE,
+ OPT__NO,
+ OPT__PARENT
+ } type;
+ const void *data; /* for standard options */
+ int argtype; /* for non-standard options */
+};
+
+static struct cmdline_option option_data[] =
+ {
+ { "accept", 'A', OPT_VALUE, "accept", -1 },
+ { "accept-regex", 0, OPT_VALUE, "acceptregex", -1 },
+ { "adjust-extension", 'E', OPT_BOOLEAN, "adjustextension", -1 },
+ { "append-output", 'a', OPT__APPEND_OUTPUT, NULL, required_argument },
+ { "ask-password", 0, OPT_BOOLEAN, "askpassword", -1 },
+ { "auth-no-challenge", 0, OPT_BOOLEAN, "authnochallenge", -1 },
+ { "background", 'b', OPT_BOOLEAN, "background", -1 },
+ { "backup-converted", 'K', OPT_BOOLEAN, "backupconverted", -1 },
+ { "backups", 0, OPT_BOOLEAN, "backups", -1 },
+ { "base", 'B', OPT_VALUE, "base", -1 },
+ { "bind-address", 0, OPT_VALUE, "bindaddress", -1 },
+#ifdef HAVE_LIBCARES
+ { "bind-dns-address", 0, OPT_VALUE, "binddnsaddress", -1 },
+#endif
+ { "body-data", 0, OPT_VALUE, "bodydata", -1 },
+ { "body-file", 0, OPT_VALUE, "bodyfile", -1 },
+ IF_SSL ( "ca-certificate", 0, OPT_VALUE, "cacertificate", -1 )
+ IF_SSL ( "ca-directory", 0, OPT_VALUE, "cadirectory", -1 )
+ { "cache", 0, OPT_BOOLEAN, "cache", -1 },
+ IF_SSL ( "certificate", 0, OPT_VALUE, "certificate", -1 )
+ IF_SSL ( "certificate-type", 0, OPT_VALUE, "certificatetype", -1 )
+ IF_SSL ( "check-certificate", 0, OPT_BOOLEAN, "checkcertificate", -1 )
+ { "clobber", 0, OPT__CLOBBER, NULL, optional_argument },
+#ifdef HAVE_LIBZ
+ { "compression", 0, OPT_VALUE, "compression", -1 },
+#endif
+ { "config", 0, OPT_VALUE, "chooseconfig", -1 },
+ { "connect-timeout", 0, OPT_VALUE, "connecttimeout", -1 },
+ { "continue", 'c', OPT_BOOLEAN, "continue", -1 },
+ { "convert-file-only", 0, OPT_BOOLEAN, "convertfileonly", -1 },
+ { "convert-links", 'k', OPT_BOOLEAN, "convertlinks", -1 },
+ { "content-disposition", 0, OPT_BOOLEAN, "contentdisposition", -1 },
+ { "content-on-error", 0, OPT_BOOLEAN, "contentonerror", -1 },
+ { "cookies", 0, OPT_BOOLEAN, "cookies", -1 },
+ IF_SSL ( "crl-file", 0, OPT_VALUE, "crlfile", -1 )
+ { "cut-dirs", 0, OPT_VALUE, "cutdirs", -1 },
+ { "debug", 'd', OPT_BOOLEAN, "debug", -1 },
+ { "default-page", 0, OPT_VALUE, "defaultpage", -1 },
+ { "delete-after", 0, OPT_BOOLEAN, "deleteafter", -1 },
+ { "directories", 0, OPT_BOOLEAN, "dirstruct", -1 },
+ { "directory-prefix", 'P', OPT_VALUE, "dirprefix", -1 },
+ { "dns-cache", 0, OPT_BOOLEAN, "dnscache", -1 },
+#ifdef HAVE_LIBCARES
+ { "dns-servers", 0, OPT_VALUE, "dnsservers", -1 },
+#endif
+ { "dns-timeout", 0, OPT_VALUE, "dnstimeout", -1 },
+ { "domains", 'D', OPT_VALUE, "domains", -1 },
+ { "dont-remove-listing", 0, OPT__DONT_REMOVE_LISTING, NULL, no_argument },
+ { "dot-style", 0, OPT_VALUE, "dotstyle", -1 }, /* deprecated */
+ { "egd-file", 0, OPT_VALUE, "egdfile", -1 },
+ { "exclude-directories", 'X', OPT_VALUE, "excludedirectories", -1 },
+ { "exclude-domains", 0, OPT_VALUE, "excludedomains", -1 },
+ { "execute", 'e', OPT__EXECUTE, NULL, required_argument },
+ { "follow-ftp", 0, OPT_BOOLEAN, "followftp", -1 },
+ { "follow-tags", 0, OPT_VALUE, "followtags", -1 },
+ { "force-directories", 'x', OPT_BOOLEAN, "dirstruct", -1 },
+ { "force-html", 'F', OPT_BOOLEAN, "forcehtml", -1 },
+ { "ftp-password", 0, OPT_VALUE, "ftppassword", -1 },
+#ifdef __VMS
+ { "ftp-stmlf", 0, OPT_BOOLEAN, "ftpstmlf", -1 },
+#endif /* def __VMS */
+ { "ftp-user", 0, OPT_VALUE, "ftpuser", -1 },
+ IF_SSL ( "ftps-clear-data-connection", 0, OPT_BOOLEAN, "ftpscleardataconnection", -1 )
+ IF_SSL ( "ftps-fallback-to-ftp", 0, OPT_BOOLEAN, "ftpsfallbacktoftp", -1 )
+ IF_SSL ( "ftps-implicit", 0, OPT_BOOLEAN, "ftpsimplicit", -1 )
+ IF_SSL ( "ftps-resume-ssl", 0, OPT_BOOLEAN, "ftpsresumessl", -1 )
+ { "glob", 0, OPT_BOOLEAN, "glob", -1 },
+ { "header", 0, OPT_VALUE, "header", -1 },
+ { "help", 'h', OPT_FUNCALL, (void *)print_help, no_argument },
+ { "host-directories", 0, OPT_BOOLEAN, "addhostdir", -1 },
+#ifdef HAVE_HSTS
+ { "hsts", 0, OPT_BOOLEAN, "hsts", -1},
+ { "hsts-file", 0, OPT_VALUE, "hstsfile", -1 },
+#endif
+ { "html-extension", 'E', OPT_BOOLEAN, "adjustextension", -1 }, /* deprecated */
+ { "htmlify", 0, OPT_BOOLEAN, "htmlify", -1 },
+ { "http-keep-alive", 0, OPT_BOOLEAN, "httpkeepalive", -1 },
+ { "http-passwd", 0, OPT_VALUE, "httppassword", -1 }, /* deprecated */
+ { "http-password", 0, OPT_VALUE, "httppassword", -1 },
+ { "http-user", 0, OPT_VALUE, "httpuser", -1 },
+ IF_SSL ( "https-only", 0, OPT_BOOLEAN, "httpsonly", -1 )
+ { "ignore-case", 0, OPT_BOOLEAN, "ignorecase", -1 },
+ { "ignore-length", 0, OPT_BOOLEAN, "ignorelength", -1 },
+ { "ignore-tags", 0, OPT_VALUE, "ignoretags", -1 },
+ { "include-directories", 'I', OPT_VALUE, "includedirectories", -1 },
+#ifdef ENABLE_IPV6
+ { "inet4-only", '4', OPT_BOOLEAN, "inet4only", -1 },
+ { "inet6-only", '6', OPT_BOOLEAN, "inet6only", -1 },
+#endif
+ { "input-file", 'i', OPT_VALUE, "input", -1 },
+#ifdef HAVE_METALINK
+ { "input-metalink", 0, OPT_VALUE, "inputmetalink", -1 },
+#endif
+ { "iri", 0, OPT_BOOLEAN, "iri", -1 },
+ { "keep-badhash", 0, OPT_BOOLEAN, "keepbadhash", -1 },
+ { "keep-session-cookies", 0, OPT_BOOLEAN, "keepsessioncookies", -1 },
+ { "level", 'l', OPT_VALUE, "reclevel", -1 },
+ { "limit-rate", 0, OPT_VALUE, "limitrate", -1 },
+ { "load-cookies", 0, OPT_VALUE, "loadcookies", -1 },
+ { "local-encoding", 0, OPT_VALUE, "localencoding", -1 },
+ { "rejected-log", 0, OPT_VALUE, "rejectedlog", -1 },
+ { "max-redirect", 0, OPT_VALUE, "maxredirect", -1 },
+#ifdef HAVE_METALINK
+ { "metalink-index", 0, OPT_VALUE, "metalinkindex", -1 },
+ { "metalink-over-http", 0, OPT_BOOLEAN, "metalinkoverhttp", -1 },
+#endif
+ { "method", 0, OPT_VALUE, "method", -1 },
+ { "mirror", 'm', OPT_BOOLEAN, "mirror", -1 },
+ { "netrc", 0, OPT_BOOLEAN, "netrc", -1 },
+ { "no", 'n', OPT__NO, NULL, required_argument },
+ { "no-clobber", 0, OPT_BOOLEAN, "noclobber", -1 },
+ { "no-config", 0, OPT_BOOLEAN, "noconfig", -1},
+ { "no-parent", 0, OPT_BOOLEAN, "noparent", -1 },
+ { "output-document", 'O', OPT_VALUE, "outputdocument", -1 },
+ { "output-file", 'o', OPT_VALUE, "logfile", -1 },
+ { "page-requisites", 'p', OPT_BOOLEAN, "pagerequisites", -1 },
+ { "parent", 0, OPT__PARENT, NULL, optional_argument },
+ { "passive-ftp", 0, OPT_BOOLEAN, "passiveftp", -1 },
+ { "password", 0, OPT_VALUE, "password", -1 },
+ IF_SSL ( "pinnedpubkey", 0, OPT_VALUE, "pinnedpubkey", -1 )
+ { "post-data", 0, OPT_VALUE, "postdata", -1 },
+ { "post-file", 0, OPT_VALUE, "postfile", -1 },
+ { "prefer-family", 0, OPT_VALUE, "preferfamily", -1 },
+#ifdef HAVE_METALINK
+ { "preferred-location", 0, OPT_VALUE, "preferredlocation", -1 },
+#endif
+ { "preserve-permissions", 0, OPT_BOOLEAN, "preservepermissions", -1 },
+ IF_SSL ( "ciphers", 0, OPT_VALUE, "ciphers", -1 )
+ IF_SSL ( "private-key", 0, OPT_VALUE, "privatekey", -1 )
+ IF_SSL ( "private-key-type", 0, OPT_VALUE, "privatekeytype", -1 )
+ { "progress", 0, OPT_VALUE, "progress", -1 },
+ { "show-progress", 0, OPT_BOOLEAN, "showprogress", -1 },
+ { "protocol-directories", 0, OPT_BOOLEAN, "protocoldirectories", -1 },
+ { "proxy", 0, OPT_BOOLEAN, "useproxy", -1 },
+ { "proxy__compat", 'Y', OPT_VALUE, "useproxy", -1 }, /* back-compatible */
+ { "proxy-passwd", 0, OPT_VALUE, "proxypassword", -1 }, /* deprecated */
+ { "proxy-password", 0, OPT_VALUE, "proxypassword", -1 },
+ { "proxy-user", 0, OPT_VALUE, "proxyuser", -1 },
+ { "quiet", 'q', OPT_BOOLEAN, "quiet", -1 },
+ { "quota", 'Q', OPT_VALUE, "quota", -1 },
+ { "random-file", 0, OPT_VALUE, "randomfile", -1 },
+ { "random-wait", 0, OPT_BOOLEAN, "randomwait", -1 },
+ { "read-timeout", 0, OPT_VALUE, "readtimeout", -1 },
+ { "recursive", 'r', OPT_BOOLEAN, "recursive", -1 },
+ { "referer", 0, OPT_VALUE, "referer", -1 },
+ { "regex-type", 0, OPT_VALUE, "regextype", -1 },
+ { "reject", 'R', OPT_VALUE, "reject", -1 },
+ { "reject-regex", 0, OPT_VALUE, "rejectregex", -1 },
+ { "relative", 'L', OPT_BOOLEAN, "relativeonly", -1 },
+ { "remote-encoding", 0, OPT_VALUE, "remoteencoding", -1 },
+ { "remove-listing", 0, OPT_BOOLEAN, "removelisting", -1 },
+ { "report-speed", 0, OPT_BOOLEAN, "reportspeed", -1 },
+ { "restrict-file-names", 0, OPT_BOOLEAN, "restrictfilenames", -1 },
+ { "retr-symlinks", 0, OPT_BOOLEAN, "retrsymlinks", -1 },
+ { "retry-connrefused", 0, OPT_BOOLEAN, "retryconnrefused", -1 },
+ { "retry-on-host-error", 0, OPT_BOOLEAN, "retryonhosterror", -1 },
+ { "retry-on-http-error", 0, OPT_VALUE, "retryonhttperror", -1 },
+ { "save-cookies", 0, OPT_VALUE, "savecookies", -1 },
+ { "save-headers", 0, OPT_BOOLEAN, "saveheaders", -1 },
+ IF_SSL ( "secure-protocol", 0, OPT_VALUE, "secureprotocol", -1 )
+ { "server-response", 'S', OPT_BOOLEAN, "serverresponse", -1 },
+ { "span-hosts", 'H', OPT_BOOLEAN, "spanhosts", -1 },
+ { "spider", 0, OPT_BOOLEAN, "spider", -1 },
+ { "start-pos", 0, OPT_VALUE, "startpos", -1 },
+ { "strict-comments", 0, OPT_BOOLEAN, "strictcomments", -1 },
+ { "timeout", 'T', OPT_VALUE, "timeout", -1 },
+ { "timestamping", 'N', OPT_BOOLEAN, "timestamping", -1 },
+ { "if-modified-since", 0, OPT_BOOLEAN, "ifmodifiedsince", -1 },
+ { "tries", 't', OPT_VALUE, "tries", -1 },
+ { "unlink", 0, OPT_BOOLEAN, "unlink", -1 },
+ { "trust-server-names", 0, OPT_BOOLEAN, "trustservernames", -1 },
+#ifndef __VMS
+ { "use-askpass", 0, OPT_VALUE, "useaskpass", -1},
+#endif
+ { "use-server-timestamps", 0, OPT_BOOLEAN, "useservertimestamps", -1 },
+ { "user", 0, OPT_VALUE, "user", -1 },
+ { "user-agent", 'U', OPT_VALUE, "useragent", -1 },
+ { "verbose", 'v', OPT_BOOLEAN, "verbose", -1 },
+ { "version", 'V', OPT_FUNCALL, (void *) print_version, no_argument },
+ { "wait", 'w', OPT_VALUE, "wait", -1 },
+ { "waitretry", 0, OPT_VALUE, "waitretry", -1 },
+ { "warc-cdx", 0, OPT_BOOLEAN, "warccdx", -1 },
+#ifdef HAVE_LIBZ
+ { "warc-compression", 0, OPT_BOOLEAN, "warccompression", -1 },
+#endif
+ { "warc-dedup", 0, OPT_VALUE, "warccdxdedup", -1 },
+ { "warc-digests", 0, OPT_BOOLEAN, "warcdigests", -1 },
+ { "warc-file", 0, OPT_VALUE, "warcfile", -1 },
+ { "warc-header", 0, OPT_VALUE, "warcheader", -1 },
+ { "warc-keep-log", 0, OPT_BOOLEAN, "warckeeplog", -1 },
+ { "warc-max-size", 0, OPT_VALUE, "warcmaxsize", -1 },
+ { "warc-tempdir", 0, OPT_VALUE, "warctempdir", -1 },
+#ifdef USE_WATT32
+ { "wdebug", 0, OPT_BOOLEAN, "wdebug", -1 },
+#endif
+#ifdef ENABLE_XATTR
+ { "xattr", 0, OPT_BOOLEAN, "xattr", -1 },
+#endif
+ };
+
+#undef IF_SSL
+
+/* Return a string that contains S with "no-" prepended. The string
+ is NUL-terminated and allocated off static storage at Wget
+ startup. */
+
+static char *
+no_prefix (const char *s)
+{
+ static char buffer[2048];
+ static char *p = buffer;
+
+ char *cp = p;
+ int size = 3 + strlen (s) + 1; /* "no-STRING\0" */
+ assert(p + size <= buffer + sizeof (buffer));
+
+ cp[0] = 'n', cp[1] = 'o', cp[2] = '-';
+ strcpy (cp + 3, s);
+ p += size;
+ return cp;
+}
+
+/* The arguments that that main passes to getopt_long. */
+static struct option long_options[2 * countof (option_data) + 1];
+static char short_options[128];
+
+/* Mapping between short option chars and option_data indices. */
+static unsigned char optmap[96];
+
+/* Marker for `--no-FOO' values in long_options. */
+#define BOOLEAN_NEG_MARKER 1024
+
+/* Initialize the long_options array used by getopt_long from the data
+ in option_data. */
+
+static void
+init_switches (void)
+{
+ static bool initialized;
+ char *p = short_options;
+ size_t i, o = 0;
+
+ if (initialized)
+ return;
+ initialized = 1;
+
+ for (i = 0; i < countof (option_data); i++)
+ {
+ struct cmdline_option *cmdopt = &option_data[i];
+ struct option *longopt;
+
+ longopt = &long_options[o++];
+ longopt->name = cmdopt->long_name;
+ longopt->val = i;
+ if (cmdopt->short_name)
+ {
+ *p++ = cmdopt->short_name;
+ optmap[cmdopt->short_name - 32] = longopt - long_options;
+ }
+ switch (cmdopt->type)
+ {
+ case OPT_VALUE:
+ longopt->has_arg = required_argument;
+ if (cmdopt->short_name)
+ *p++ = ':';
+ break;
+ case OPT_BOOLEAN:
+ /* Specify an optional argument for long options, so that
+ --option=off works the same as --no-option, for
+ compatibility with pre-1.10 Wget. However, don't specify
+ optional arguments short-option booleans because they
+ prevent combining of short options. */
+ longopt->has_arg = optional_argument;
+ /* For Boolean options, add the "--no-FOO" variant, which is
+ identical to "--foo", except it has opposite meaning and
+ it doesn't allow an argument. */
+ longopt = &long_options[o++];
+ longopt->name = no_prefix (cmdopt->long_name);
+ longopt->has_arg = no_argument;
+ /* Mask the value so we'll be able to recognize that we're
+ dealing with the false value. */
+ longopt->val = i | BOOLEAN_NEG_MARKER;
+ break;
+ default:
+ assert (cmdopt->argtype != -1);
+ longopt->has_arg = cmdopt->argtype;
+ if (cmdopt->short_name)
+ {
+ if (longopt->has_arg == required_argument)
+ *p++ = ':';
+ /* Don't handle optional_argument */
+ }
+ }
+ }
+ /* Terminate short_options. */
+ *p = '\0';
+ /* No need for xzero(long_options[o]) because its storage is static
+ and it will be zeroed by default. */
+ assert (o <= countof (long_options));
+}
+
+/* Print the usage message. */
+static int
+print_usage (_GL_UNUSED int error)
+{
+#ifndef TESTING
+ return fprintf (error ? stderr : stdout,
+ _("Usage: %s [OPTION]... [URL]...\n"), exec_name);
+#else
+ return 0;
+#endif
+}
+
+/* Print the help message, describing all the available options. If
+ you add an option, be sure to update this list. */
+_Noreturn static void
+print_help (void)
+{
+#ifndef TESTING
+ /* We split the help text this way to ease translation of individual
+ entries. */
+ static const char *help[] = {
+ "\n",
+ N_("\
+Mandatory arguments to long options are mandatory for short options too.\n\n"),
+ N_("\
+Startup:\n"),
+ N_("\
+ -V, --version display the version of Wget and exit\n"),
+ N_("\
+ -h, --help print this help\n"),
+ N_("\
+ -b, --background go to background after startup\n"),
+ N_("\
+ -e, --execute=COMMAND execute a `.wgetrc'-style command\n"),
+ "\n",
+
+ N_("\
+Logging and input file:\n"),
+ N_("\
+ -o, --output-file=FILE log messages to FILE\n"),
+ N_("\
+ -a, --append-output=FILE append messages to FILE\n"),
+#ifdef ENABLE_DEBUG
+ N_("\
+ -d, --debug print lots of debugging information\n"),
+#endif
+#ifdef USE_WATT32
+ N_("\
+ --wdebug print Watt-32 debug output\n"),
+#endif
+ N_("\
+ -q, --quiet quiet (no output)\n"),
+ N_("\
+ -v, --verbose be verbose (this is the default)\n"),
+ N_("\
+ -nv, --no-verbose turn off verboseness, without being quiet\n"),
+ N_("\
+ --report-speed=TYPE output bandwidth as TYPE. TYPE can be bits\n"),
+ N_("\
+ -i, --input-file=FILE download URLs found in local or external FILE\n"),
+#ifdef HAVE_METALINK
+ N_("\
+ --input-metalink=FILE download files covered in local Metalink FILE\n"),
+#endif
+ N_("\
+ -F, --force-html treat input file as HTML\n"),
+ N_("\
+ -B, --base=URL resolves HTML input-file links (-i -F)\n\
+ relative to URL\n"),
+ N_("\
+ --config=FILE specify config file to use\n"),
+ N_("\
+ --no-config do not read any config file\n"),
+ N_("\
+ --rejected-log=FILE log reasons for URL rejection to FILE\n"),
+ "\n",
+
+ N_("\
+Download:\n"),
+ N_("\
+ -t, --tries=NUMBER set number of retries to NUMBER (0 unlimits)\n"),
+ N_("\
+ --retry-connrefused retry even if connection is refused\n"),
+ N_("\
+ --retry-on-http-error=ERRORS comma-separated list of HTTP errors to retry\n"),
+ N_("\
+ -O, --output-document=FILE write documents to FILE\n"),
+ N_("\
+ -nc, --no-clobber skip downloads that would download to\n\
+ existing files (overwriting them)\n"),
+ N_("\
+ --no-netrc don't try to obtain credentials from .netrc\n"),
+ N_("\
+ -c, --continue resume getting a partially-downloaded file\n"),
+ N_("\
+ --start-pos=OFFSET start downloading from zero-based position OFFSET\n"),
+ N_("\
+ --progress=TYPE select progress gauge type\n"),
+ N_("\
+ --show-progress display the progress bar in any verbosity mode\n"),
+ N_("\
+ -N, --timestamping don't re-retrieve files unless newer than\n\
+ local\n"),
+ N_("\
+ --no-if-modified-since don't use conditional if-modified-since get\n\
+ requests in timestamping mode\n"),
+ N_("\
+ --no-use-server-timestamps don't set the local file's timestamp by\n\
+ the one on the server\n"),
+ N_("\
+ -S, --server-response print server response\n"),
+ N_("\
+ --spider don't download anything\n"),
+ N_("\
+ -T, --timeout=SECONDS set all timeout values to SECONDS\n"),
+#ifdef HAVE_LIBCARES
+ N_("\
+ --dns-servers=ADDRESSES list of DNS servers to query (comma separated)\n"),
+ N_("\
+ --bind-dns-address=ADDRESS bind DNS resolver to ADDRESS (hostname or IP) on local host\n"),
+#endif
+ N_("\
+ --dns-timeout=SECS set the DNS lookup timeout to SECS\n"),
+ N_("\
+ --connect-timeout=SECS set the connect timeout to SECS\n"),
+ N_("\
+ --read-timeout=SECS set the read timeout to SECS\n"),
+ N_("\
+ -w, --wait=SECONDS wait SECONDS between retrievals\n\
+ (applies if more then 1 URL is to be retrieved)\n"),
+ N_("\
+ --waitretry=SECONDS wait 1..SECONDS between retries of a retrieval\n\
+ (applies if more then 1 URL is to be retrieved)\n"),
+ N_("\
+ --random-wait wait from 0.5*WAIT...1.5*WAIT secs between retrievals\n\
+ (applies if more then 1 URL is to be retrieved)\n"),
+ N_("\
+ --no-proxy explicitly turn off proxy\n"),
+ N_("\
+ -Q, --quota=NUMBER set retrieval quota to NUMBER\n"),
+ N_("\
+ --bind-address=ADDRESS bind to ADDRESS (hostname or IP) on local host\n"),
+ N_("\
+ --limit-rate=RATE limit download rate to RATE\n"),
+ N_("\
+ --no-dns-cache disable caching DNS lookups\n"),
+ N_("\
+ --restrict-file-names=OS restrict chars in file names to ones OS allows\n"),
+ N_("\
+ --ignore-case ignore case when matching files/directories\n"),
+#ifdef ENABLE_IPV6
+ N_("\
+ -4, --inet4-only connect only to IPv4 addresses\n"),
+ N_("\
+ -6, --inet6-only connect only to IPv6 addresses\n"),
+ N_("\
+ --prefer-family=FAMILY connect first to addresses of specified family,\n\
+ one of IPv6, IPv4, or none\n"),
+#endif
+ N_("\
+ --user=USER set both ftp and http user to USER\n"),
+ N_("\
+ --password=PASS set both ftp and http password to PASS\n"),
+ N_("\
+ --ask-password prompt for passwords\n"),
+#ifndef __VMS
+ N_("\
+ --use-askpass=COMMAND specify credential handler for requesting \n\
+ username and password. If no COMMAND is \n\
+ specified the WGET_ASKPASS or the SSH_ASKPASS \n\
+ environment variable is used.\n"),
+#endif
+ N_("\
+ --no-iri turn off IRI support\n"),
+ N_("\
+ --local-encoding=ENC use ENC as the local encoding for IRIs\n"),
+ N_("\
+ --remote-encoding=ENC use ENC as the default remote encoding\n"),
+ N_("\
+ --unlink remove file before clobber\n"),
+#ifdef HAVE_METALINK
+ N_("\
+ --keep-badhash keep files with checksum mismatch (append .badhash)\n"),
+ N_("\
+ --metalink-index=NUMBER Metalink application/metalink4+xml metaurl ordinal NUMBER\n"),
+ N_("\
+ --metalink-over-http use Metalink metadata from HTTP response headers\n"),
+ N_("\
+ --preferred-location preferred location for Metalink resources\n"),
+#endif
+#ifdef ENABLE_XATTR
+ N_("\
+ --xattr turn on storage of metadata in extended file attributes\n"),
+#endif
+ "\n",
+
+ N_("\
+Directories:\n"),
+ N_("\
+ -nd, --no-directories don't create directories\n"),
+ N_("\
+ -x, --force-directories force creation of directories\n"),
+ N_("\
+ -nH, --no-host-directories don't create host directories\n"),
+ N_("\
+ --protocol-directories use protocol name in directories\n"),
+ N_("\
+ -P, --directory-prefix=PREFIX save files to PREFIX/..\n"),
+ N_("\
+ --cut-dirs=NUMBER ignore NUMBER remote directory components\n"),
+ "\n",
+
+ N_("\
+HTTP options:\n"),
+ N_("\
+ --http-user=USER set http user to USER\n"),
+ N_("\
+ --http-password=PASS set http password to PASS\n"),
+ N_("\
+ --no-cache disallow server-cached data\n"),
+ N_ ("\
+ --default-page=NAME change the default page name (normally\n\
+ this is 'index.html'.)\n"),
+ N_("\
+ -E, --adjust-extension save HTML/CSS documents with proper extensions\n"),
+ N_("\
+ --ignore-length ignore 'Content-Length' header field\n"),
+ N_("\
+ --header=STRING insert STRING among the headers\n"),
+#ifdef HAVE_LIBZ
+ N_("\
+ --compression=TYPE choose compression, one of auto, gzip and none. (default: none)\n"),
+#endif
+ N_("\
+ --max-redirect maximum redirections allowed per page\n"),
+ N_("\
+ --proxy-user=USER set USER as proxy username\n"),
+ N_("\
+ --proxy-password=PASS set PASS as proxy password\n"),
+ N_("\
+ --referer=URL include 'Referer: URL' header in HTTP request\n"),
+ N_("\
+ --save-headers save the HTTP headers to file\n"),
+ N_("\
+ -U, --user-agent=AGENT identify as AGENT instead of Wget/VERSION\n"),
+ N_("\
+ --no-http-keep-alive disable HTTP keep-alive (persistent connections)\n"),
+ N_("\
+ --no-cookies don't use cookies\n"),
+ N_("\
+ --load-cookies=FILE load cookies from FILE before session\n"),
+ N_("\
+ --save-cookies=FILE save cookies to FILE after session\n"),
+ N_("\
+ --keep-session-cookies load and save session (non-permanent) cookies\n"),
+ N_("\
+ --post-data=STRING use the POST method; send STRING as the data\n"),
+ N_("\
+ --post-file=FILE use the POST method; send contents of FILE\n"),
+ N_("\
+ --method=HTTPMethod use method \"HTTPMethod\" in the request\n"),
+ N_("\
+ --body-data=STRING send STRING as data. --method MUST be set\n"),
+ N_("\
+ --body-file=FILE send contents of FILE. --method MUST be set\n"),
+ N_("\
+ --content-disposition honor the Content-Disposition header when\n\
+ choosing local file names (EXPERIMENTAL)\n"),
+ N_("\
+ --content-on-error output the received content on server errors\n"),
+ N_("\
+ --auth-no-challenge send Basic HTTP authentication information\n\
+ without first waiting for the server's\n\
+ challenge\n"),
+ "\n",
+
+#ifdef HAVE_SSL
+ N_("\
+HTTPS (SSL/TLS) options:\n"),
+ N_("\
+ --secure-protocol=PR choose secure protocol, one of auto, SSLv2,\n\
+ SSLv3, TLSv1, TLSv1_1, TLSv1_2 and PFS\n"),
+ N_("\
+ --https-only only follow secure HTTPS links\n"),
+ N_("\
+ --no-check-certificate don't validate the server's certificate\n"),
+ N_("\
+ --certificate=FILE client certificate file\n"),
+ N_("\
+ --certificate-type=TYPE client certificate type, PEM or DER\n"),
+ N_("\
+ --private-key=FILE private key file\n"),
+ N_("\
+ --private-key-type=TYPE private key type, PEM or DER\n"),
+ N_("\
+ --ca-certificate=FILE file with the bundle of CAs\n"),
+ N_("\
+ --ca-directory=DIR directory where hash list of CAs is stored\n"),
+ N_("\
+ --crl-file=FILE file with bundle of CRLs\n"),
+ N_("\
+ --pinnedpubkey=FILE/HASHES Public key (PEM/DER) file, or any number\n\
+ of base64 encoded sha256 hashes preceded by\n\
+ \'sha256//\' and separated by \';\', to verify\n\
+ peer against\n"),
+#if defined(HAVE_LIBSSL) || defined(HAVE_LIBSSL32)
+ N_("\
+ --random-file=FILE file with random data for seeding the SSL PRNG\n"),
+#endif
+#if (defined(HAVE_LIBSSL) || defined(HAVE_LIBSSL32)) && defined(HAVE_RAND_EGD)
+ N_("\
+ --egd-file=FILE file naming the EGD socket with random data\n"),
+#endif
+ "\n",
+ N_("\
+ --ciphers=STR Set the priority string (GnuTLS) or cipher list string (OpenSSL) directly.\n\
+ Use with care. This option overrides --secure-protocol.\n\
+ The format and syntax of this string depend on the specific SSL/TLS engine.\n"),
+#endif /* HAVE_SSL */
+
+#ifdef HAVE_HSTS
+ N_("\
+HSTS options:\n"),
+ N_("\
+ --no-hsts disable HSTS\n"),
+ N_("\
+ --hsts-file path of HSTS database (will override default)\n"),
+ "\n",
+#endif
+
+ N_("\
+FTP options:\n"),
+#ifdef __VMS
+ N_("\
+ --ftp-stmlf use Stream_LF format for all binary FTP files\n"),
+#endif /* def __VMS */
+ N_("\
+ --ftp-user=USER set ftp user to USER\n"),
+ N_("\
+ --ftp-password=PASS set ftp password to PASS\n"),
+ N_("\
+ --no-remove-listing don't remove '.listing' files\n"),
+ N_("\
+ --no-glob turn off FTP file name globbing\n"),
+ N_("\
+ --no-passive-ftp disable the \"passive\" transfer mode\n"),
+ N_("\
+ --preserve-permissions preserve remote file permissions\n"),
+ N_("\
+ --retr-symlinks when recursing, get linked-to files (not dir)\n"),
+ "\n",
+
+#ifdef HAVE_SSL
+ N_("\
+FTPS options:\n"),
+ N_("\
+ --ftps-implicit use implicit FTPS (default port is 990)\n"),
+ N_("\
+ --ftps-resume-ssl resume the SSL/TLS session started in the control connection when\n"
+ " opening a data connection\n"),
+ N_("\
+ --ftps-clear-data-connection cipher the control channel only; all the data will be in plaintext\n"),
+ N_("\
+ --ftps-fallback-to-ftp fall back to FTP if FTPS is not supported in the target server\n"),
+#endif
+
+ N_("\
+WARC options:\n"),
+ N_("\
+ --warc-file=FILENAME save request/response data to a .warc.gz file\n"),
+ N_("\
+ --warc-header=STRING insert STRING into the warcinfo record\n"),
+ N_("\
+ --warc-max-size=NUMBER set maximum size of WARC files to NUMBER\n"),
+ N_("\
+ --warc-cdx write CDX index files\n"),
+ N_("\
+ --warc-dedup=FILENAME do not store records listed in this CDX file\n"),
+#ifdef HAVE_LIBZ
+ N_("\
+ --no-warc-compression do not compress WARC files with GZIP\n"),
+#endif
+ N_("\
+ --no-warc-digests do not calculate SHA1 digests\n"),
+ N_("\
+ --no-warc-keep-log do not store the log file in a WARC record\n"),
+ N_("\
+ --warc-tempdir=DIRECTORY location for temporary files created by the\n\
+ WARC writer\n"),
+ "\n",
+
+ N_("\
+Recursive download:\n"),
+ N_("\
+ -r, --recursive specify recursive download\n"),
+ N_("\
+ -l, --level=NUMBER maximum recursion depth (inf or 0 for infinite)\n"),
+ N_("\
+ --delete-after delete files locally after downloading them\n"),
+ N_("\
+ -k, --convert-links make links in downloaded HTML or CSS point to\n\
+ local files\n"),
+ N_("\
+ --convert-file-only convert the file part of the URLs only (usually known as the basename)\n"),
+ N_("\
+ --backups=N before writing file X, rotate up to N backup files\n"),
+
+#ifdef __VMS
+ N_("\
+ -K, --backup-converted before converting file X, back up as X_orig\n"),
+#else /* def __VMS */
+ N_("\
+ -K, --backup-converted before converting file X, back up as X.orig\n"),
+#endif /* def __VMS [else] */
+ N_("\
+ -m, --mirror shortcut for -N -r -l inf --no-remove-listing\n"),
+ N_("\
+ -p, --page-requisites get all images, etc. needed to display HTML page\n"),
+ N_("\
+ --strict-comments turn on strict (SGML) handling of HTML comments\n"),
+ "\n",
+
+ N_("\
+Recursive accept/reject:\n"),
+ N_("\
+ -A, --accept=LIST comma-separated list of accepted extensions\n"),
+ N_("\
+ -R, --reject=LIST comma-separated list of rejected extensions\n"),
+ N_("\
+ --accept-regex=REGEX regex matching accepted URLs\n"),
+ N_("\
+ --reject-regex=REGEX regex matching rejected URLs\n"),
+#if defined HAVE_LIBPCRE || defined HAVE_LIBPCRE2
+ N_("\
+ --regex-type=TYPE regex type (posix|pcre)\n"),
+#else
+ N_("\
+ --regex-type=TYPE regex type (posix)\n"),
+#endif
+ N_("\
+ -D, --domains=LIST comma-separated list of accepted domains\n"),
+ N_("\
+ --exclude-domains=LIST comma-separated list of rejected domains\n"),
+ N_("\
+ --follow-ftp follow FTP links from HTML documents\n"),
+ N_("\
+ --follow-tags=LIST comma-separated list of followed HTML tags\n"),
+ N_("\
+ --ignore-tags=LIST comma-separated list of ignored HTML tags\n"),
+ N_("\
+ -H, --span-hosts go to foreign hosts when recursive\n"),
+ N_("\
+ -L, --relative follow relative links only\n"),
+ N_("\
+ -I, --include-directories=LIST list of allowed directories\n"),
+ N_("\
+ --trust-server-names use the name specified by the redirection\n\
+ URL's last component\n"),
+ N_("\
+ -X, --exclude-directories=LIST list of excluded directories\n"),
+ N_("\
+ -np, --no-parent don't ascend to the parent directory\n"),
+ "\n",
+ N_("Email bug reports, questions, discussions to <bug-wget@gnu.org>\n"
+ "and/or open issues at https://savannah.gnu.org/bugs/?func=additem&group=wget.\n")
+ };
+
+ size_t i;
+
+ if (printf (_("GNU Wget %s, a non-interactive network retriever.\n"),
+ version_string) < 0)
+ exit (WGET_EXIT_IO_FAIL);
+ if (print_usage (0) < 0)
+ exit (WGET_EXIT_IO_FAIL);
+
+ for (i = 0; i < countof (help); i++)
+ if (fputs (_(help[i]), stdout) < 0)
+ exit (WGET_EXIT_IO_FAIL);
+#endif /* TESTING */
+ exit (WGET_EXIT_SUCCESS);
+}
+
+/* Return a human-readable printed representation of INTERVAL,
+ measured in seconds. */
+
+static char *
+secs_to_human_time (double interval)
+{
+ static char buf[32];
+ int secs = (int) (interval + 0.5);
+ int hours, mins, days;
+
+ days = secs / 86400, secs %= 86400;
+ hours = secs / 3600, secs %= 3600;
+ mins = secs / 60, secs %= 60;
+
+ if (days)
+ sprintf (buf, "%dd %dh %dm %ds", days, hours, mins, secs);
+ else if (hours)
+ sprintf (buf, "%dh %dm %ds", hours, mins, secs);
+ else if (mins)
+ sprintf (buf, "%dm %ds", mins, secs);
+ else
+ sprintf (buf, "%ss", print_decimal (interval));
+
+ return buf;
+}
+
+static char *
+prompt_for_password (void)
+{
+ if (opt.user)
+ fprintf (stderr, _("Password for user %s: "), quote (opt.user));
+ else
+ fprintf (stderr, _("Password: "));
+#ifndef TESTING
+ /* gnulib's getpass() uses static variables internally, bad for fuzing */
+ return getpass("");
+#else
+ return xstrdup("");
+#endif
+}
+
+
+/* Execute external application opt.use_askpass */
+static void
+run_use_askpass (char *question, char **answer)
+{
+ char tmp[1024];
+ pid_t pid;
+ int status;
+ int com[2];
+ ssize_t bytes = 0;
+ char *argv[3], *p;
+ posix_spawn_file_actions_t fa;
+
+ if (pipe (com) == -1)
+ {
+ fprintf (stderr, _("Cannot create pipe\n"));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+
+ status = posix_spawn_file_actions_init (&fa);
+ if (status)
+ {
+ fprintf (stderr,
+ _("Error initializing spawn file actions for use-askpass: %d\n"),
+ status);
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+
+ status = posix_spawn_file_actions_adddup2 (&fa, com[1], STDOUT_FILENO);
+ if (status)
+ {
+ fprintf (stderr,
+ _("Error setting spawn file actions for use-askpass: %d\n"),
+ status);
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+
+ /* C89 initializer lists must be computable at load time,
+ * thus this explicit initialization. */
+ argv[0] = opt.use_askpass;
+ argv[1] = question;
+ argv[2] = NULL;
+
+ status = posix_spawnp (&pid, opt.use_askpass, &fa, NULL, argv, environ);
+ if (status)
+ {
+ fprintf (stderr, "Error spawning %s: %d\n", opt.use_askpass, status);
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+
+ /* Parent process reads from child. */
+ close (com[1]);
+ bytes = read (com[0], tmp, sizeof (tmp) - 1);
+ if (bytes <= 0)
+ {
+ fprintf (stderr,
+ _("Error reading response from command \"%s %s\": %s\n"),
+ opt.use_askpass, question, strerror (errno));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+
+ /* Make sure there is a trailing 0 */
+ tmp[bytes] = '\0';
+
+ /* Remove a possible new line */
+ if ((p = strpbrk (tmp, "\r\n")))
+ bytes = p - tmp;
+
+ *answer = xmemdup0 (tmp, bytes);
+}
+
+/* set the user name and password*/
+static void
+use_askpass (struct url *u)
+{
+ static char question[1024];
+
+ if (u->user == NULL || u->user[0] == '\0')
+ {
+ snprintf (question, sizeof (question), _("Username for '%s%s': "),
+ scheme_leading_string(u->scheme), u->host);
+ /* Prompt for username */
+ run_use_askpass (question, &u->user);
+ if (opt.recursive)
+ opt.user = xstrdup (u->user);
+ }
+
+ if (u->passwd == NULL || u->passwd[0] == '\0')
+ {
+ snprintf(question, sizeof (question), _("Password for '%s%s@%s': "),
+ scheme_leading_string (u->scheme), u->user, u->host);
+ /* Prompt for password */
+ run_use_askpass (question, &u->passwd);
+ if (opt.recursive)
+ opt.passwd = xstrdup (u->passwd);
+ }
+}
+/* Function that prints the line argument while limiting it
+ to at most line_length. prefix is printed on the first line
+ and an appropriate number of spaces are added on subsequent
+ lines.*/
+static int
+format_and_print_line (const char *prefix, const char *line,
+ int line_length)
+{
+ int remaining_chars;
+ char *line_dup, *token;
+
+ assert (prefix != NULL);
+ assert (line != NULL);
+ assert (line_length > TABULATION);
+
+ line_dup = xstrdup (line);
+
+ if (printf ("%s", prefix) < 0)
+ {
+ xfree (line_dup);
+ return -1;
+ }
+
+ /* Wrap to new line after prefix. */
+ remaining_chars = 0;
+
+ /* We break on spaces. */
+ token = strtok (line_dup, " ");
+ while (token != NULL)
+ {
+ /* If however a token is much larger than the maximum
+ line length, all bets are off and we simply print the
+ token on the next line. */
+ if (remaining_chars <= (int) strlen (token))
+ {
+ if (printf ("\n%*c", TABULATION, ' ') < 0)
+ {
+ xfree (line_dup);
+ return -1;
+ }
+ remaining_chars = line_length - TABULATION;
+ }
+ if (printf ("%s ", token) < 0)
+ {
+ xfree (line_dup);
+ return -1;
+ }
+ remaining_chars -= strlen (token) + 1; /* account for " " */
+ token = strtok (NULL, " ");
+ }
+
+ if (printf ("\n") < 0)
+ {
+ xfree (line_dup);
+ return -1;
+ }
+
+ xfree (line_dup);
+ return 0;
+}
+
+_Noreturn static void
+print_version (void)
+{
+ const char *wgetrc_title = _("Wgetrc: ");
+ const char *locale_title = _("Locale: ");
+ const char *compile_title = _("Compile: ");
+ const char *link_title = _("Link: ");
+ char *env_wgetrc, *user_wgetrc;
+ int i;
+
+ if (printf (_("GNU Wget %s built on %s.\n\n"), version_string, OS_TYPE) < 0)
+ exit (WGET_EXIT_IO_FAIL);
+
+ for (i = 0; compiled_features[i] != NULL; )
+ {
+ int line_length = MAX_CHARS_PER_LINE;
+ while ((line_length > 0) && (compiled_features[i] != NULL))
+ {
+ if (printf ("%s ", compiled_features[i]) < 0)
+ exit (WGET_EXIT_IO_FAIL);
+ line_length -= (int) strlen (compiled_features[i]) + 2;
+ i++;
+ }
+ if (printf ("\n") < 0)
+ exit (WGET_EXIT_IO_FAIL);
+ }
+ if (printf ("\n") < 0)
+ exit (WGET_EXIT_IO_FAIL);
+
+ /* Print VMS-specific version info. */
+#ifdef __VMS
+ if (vms_version_supplement() < 0)
+ exit (WGET_EXIT_IO_FAIL);
+#endif /* def __VMS */
+
+ /* Handle the case when $WGETRC is unset and $HOME/.wgetrc is
+ absent. */
+ if (printf ("%s\n", wgetrc_title) < 0)
+ exit (WGET_EXIT_IO_FAIL);
+
+ env_wgetrc = wgetrc_env_file_name ();
+ if (env_wgetrc && *env_wgetrc)
+ {
+ if (printf (_(" %s (env)\n"), env_wgetrc) < 0)
+ exit (WGET_EXIT_IO_FAIL);
+ xfree (env_wgetrc);
+ }
+ user_wgetrc = wgetrc_user_file_name ();
+ if (user_wgetrc)
+ {
+ if (printf (_(" %s (user)\n"), user_wgetrc) < 0)
+ exit (WGET_EXIT_IO_FAIL);
+ xfree (user_wgetrc);
+ }
+#ifdef SYSTEM_WGETRC
+ if (printf (_(" %s (system)\n"), SYSTEM_WGETRC) < 0)
+ exit (WGET_EXIT_IO_FAIL);
+#endif
+
+#ifdef ENABLE_NLS
+ if (format_and_print_line (locale_title,
+ LOCALEDIR,
+ MAX_CHARS_PER_LINE) < 0)
+ exit (WGET_EXIT_IO_FAIL);
+#endif /* def ENABLE_NLS */
+
+ if (compilation_string != NULL)
+ if (format_and_print_line (compile_title,
+ compilation_string,
+ MAX_CHARS_PER_LINE) < 0)
+ exit (WGET_EXIT_IO_FAIL);
+
+ if (link_string != NULL)
+ if (format_and_print_line (link_title,
+ link_string,
+ MAX_CHARS_PER_LINE) < 0)
+ exit (WGET_EXIT_IO_FAIL);
+
+ if (printf ("\n") < 0)
+ exit (WGET_EXIT_IO_FAIL);
+
+ /* TRANSLATORS: When available, an actual copyright character
+ (circle-c) should be used in preference to "(C)". */
+ if (printf (_("\
+Copyright (C) %s Free Software Foundation, Inc.\n"), "2015") < 0)
+ exit (WGET_EXIT_IO_FAIL);
+ if (fputs (_("\
+License GPLv3+: GNU GPL version 3 or later\n\
+<http://www.gnu.org/licenses/gpl.html>.\n\
+This is free software: you are free to change and redistribute it.\n\
+There is NO WARRANTY, to the extent permitted by law.\n"), stdout) < 0)
+ exit (WGET_EXIT_IO_FAIL);
+ /* TRANSLATORS: When available, please use the proper diacritics for
+ names such as this one. See en_US.po for reference. */
+ if (fputs (_("\nOriginally written by Hrvoje Niksic <hniksic@xemacs.org>.\n"),
+ stdout) < 0)
+ exit (WGET_EXIT_IO_FAIL);
+ if (fputs (_("Please send bug reports and questions to <bug-wget@gnu.org>.\n"),
+ stdout) < 0)
+ exit (WGET_EXIT_IO_FAIL);
+
+ exit (WGET_EXIT_SUCCESS);
+}
+
+const char *program_name; /* Needed by lib/error.c. */
+const char *program_argstring; /* Needed by wget_warc.c. */
+struct ptimer *timer;
+int cleaned_up;
+
+int
+main (int argc, char **argv)
+{
+ char *p;
+ int i, ret, longindex;
+ int nurls;
+ int retconf;
+ int argstring_length;
+ bool use_userconfig = false;
+ bool noconfig = false;
+ bool append_to_log = false;
+
+ cleaned_up = 0; /* do cleanup later */
+
+ timer = ptimer_new ();
+ double start_time = ptimer_measure (timer);
+
+ total_downloaded_bytes = 0;
+ program_name = argv[0];
+
+ i18n_initialize ();
+
+ /* Construct the name of the executable, without the directory part. */
+#ifdef __VMS
+ /* On VMS, lose the "dev:[dir]" prefix and the ".EXE;nnn" suffix. */
+ exec_name = vms_basename (argv[0]);
+#else /* def __VMS */
+ exec_name = base_name (argv[0]);
+#endif /* def __VMS [else] */
+
+#ifdef WINDOWS
+ /* Drop extension (typically .EXE) from executable filename. */
+ windows_main ((char **) &exec_name);
+#endif
+
+ /* Construct the arguments string. */
+ for (argstring_length = 1, i = 1; i < argc; i++)
+ argstring_length += strlen (argv[i]) + 3 + 1;
+ program_argstring = p = malloc (argstring_length);
+ if (p == NULL)
+ {
+ fprintf (stderr, _("Memory allocation problem\n"));
+ exit (WGET_EXIT_PARSE_ERROR);
+ }
+ for (i = 1; i < argc; i++)
+ {
+ int arglen;
+
+ *p++ = '"';
+ arglen = strlen (argv[i]);
+ memcpy (p, argv[i], arglen);
+ p += arglen;
+ *p++ = '"';
+ *p++ = ' ';
+ }
+ *p = '\0';
+
+ /* Load the hard-coded defaults. */
+ defaults ();
+ opt.homedir = home_dir();
+
+ init_switches ();
+
+ /* This separate getopt_long is needed to find the user config file
+ option ("--config") and parse it before the other user options. */
+ longindex = -1;
+
+ while ((retconf = getopt_long (argc, argv,
+ short_options, long_options, &longindex)) != -1)
+ {
+ int confval;
+ struct cmdline_option *config_opt;
+
+ /* There is no short option for "--config". */
+ if (longindex >= 0)
+ {
+ confval = long_options[longindex].val;
+ config_opt = &option_data[confval & ~BOOLEAN_NEG_MARKER];
+ if (strcmp (config_opt->long_name, "no-config") == 0)
+ {
+ noconfig = true;
+ break;
+ }
+ else if (strcmp (config_opt->long_name, "config") == 0)
+ {
+ file_stats_t flstats;
+ use_userconfig = true;
+ memset(&flstats, 0, sizeof(flstats));
+ if (file_exists_p(optarg, &flstats) && run_wgetrc (optarg, &flstats))
+ break;
+ else
+ {
+ fprintf (stderr, _("Exiting due to error in %s\n"), optarg);
+ exit (WGET_EXIT_PARSE_ERROR);
+ }
+ }
+ }
+ }
+
+ /* If the user did not specify a config, read the system wgetrc and ~/.wgetrc. */
+ if (noconfig == false && use_userconfig == false)
+ if ((ret = initialize ()))
+ return ret;
+
+ opterr = 0;
+ optind = 0;
+
+ longindex = -1;
+ while ((ret = getopt_long (argc, argv,
+ short_options, long_options, &longindex)) != -1)
+ {
+ int val;
+ struct cmdline_option *cmdopt;
+
+ /* If LONGINDEX is unchanged, it means RET is referring a short
+ option. */
+ if (longindex == -1)
+ {
+ if (ret == '?')
+ {
+ print_usage (1);
+ fprintf (stderr, "\n");
+ fprintf (stderr, _("Try `%s --help' for more options.\n"),
+ exec_name);
+ exit (WGET_EXIT_PARSE_ERROR);
+ }
+ /* Find the short option character in the mapping. */
+ longindex = optmap[ret - 32];
+ }
+ val = long_options[longindex].val;
+
+ /* Use the retrieved value to locate the option in the
+ option_data array, and to see if we're dealing with the
+ negated "--no-FOO" variant of the boolean option "--foo". */
+ cmdopt = &option_data[val & ~BOOLEAN_NEG_MARKER];
+ switch (cmdopt->type)
+ {
+ case OPT_VALUE:
+ setoptval (cmdopt->data, optarg, cmdopt->long_name);
+ break;
+ case OPT_BOOLEAN:
+ if (optarg)
+ /* The user has specified a value -- use it. */
+ setoptval (cmdopt->data, optarg, cmdopt->long_name);
+ else
+ {
+ /* NEG is true for `--no-FOO' style boolean options. */
+ bool neg = !!(val & BOOLEAN_NEG_MARKER);
+ setoptval (cmdopt->data, neg ? "0" : "1", cmdopt->long_name);
+ }
+ break;
+ case OPT_FUNCALL:
+ {
+ void (*func) (void) = (void (*) (void)) cmdopt->data;
+ func ();
+ }
+ break;
+ case OPT__APPEND_OUTPUT:
+ setoptval ("logfile", optarg, cmdopt->long_name);
+ append_to_log = true;
+ break;
+ case OPT__EXECUTE:
+ if (optarg) /* check silences static analyzer */
+ run_command (optarg);
+ break;
+ case OPT__NO:
+ {
+ /* We support real --no-FOO flags now, but keep these
+ short options for convenience and backward
+ compatibility. */
+ for (p = optarg; p && *p; p++)
+ switch (*p)
+ {
+ case 'v':
+ setoptval ("verbose", "0", cmdopt->long_name);
+ break;
+ case 'H':
+ setoptval ("addhostdir", "0", cmdopt->long_name);
+ break;
+ case 'd':
+ setoptval ("dirstruct", "0", cmdopt->long_name);
+ break;
+ case 'c':
+ setoptval ("noclobber", "1", cmdopt->long_name);
+ break;
+ case 'p':
+ setoptval ("noparent", "1", cmdopt->long_name);
+ break;
+ default:
+ fprintf (stderr, _("%s: illegal option -- `-n%c'\n"),
+ exec_name, *p);
+ print_usage (1);
+ fprintf (stderr, "\n");
+ fprintf (stderr, _("Try `%s --help' for more options.\n"),
+ exec_name);
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ break;
+ }
+ case OPT__PARENT:
+ case OPT__CLOBBER:
+ {
+ /* The wgetrc commands are named noparent and noclobber,
+ so we must revert the meaning of the cmdline options
+ before passing the value to setoptval. */
+ bool flag = true;
+ if (optarg)
+ flag = (*optarg == '1' || c_tolower (*optarg) == 'y'
+ || (c_tolower (optarg[0]) == 'o'
+ && c_tolower (optarg[1]) == 'n'));
+ setoptval (cmdopt->type == OPT__PARENT ? "noparent" : "noclobber",
+ flag ? "0" : "1", cmdopt->long_name);
+ break;
+ }
+ case OPT__DONT_REMOVE_LISTING:
+ setoptval ("removelisting", "0", cmdopt->long_name);
+ break;
+ }
+
+ longindex = -1;
+ }
+
+ nurls = argc - optind;
+
+ /* Initialize logging ASAP. */
+ log_init (opt.lfilename, append_to_log);
+
+ /* If we do not have Debug support compiled in AND Wget is invoked with the
+ * --debug switch, instead of failing, we silently turn it into a no-op. For
+ * this no-op, we explicitly set opt.debug to false and hence none of the
+ * Debug output messages will be printed.
+ */
+#ifndef ENABLE_DEBUG
+ if (opt.debug)
+ {
+ fprintf (stderr, _("Debugging support not compiled in. "
+ "Ignoring --debug flag.\n"));
+ opt.debug = false;
+ }
+#endif
+
+ /* All user options have now been processed, so it's now safe to do
+ interoption dependency checks. */
+
+ if (opt.noclobber && (opt.convert_links || opt.convert_file_only))
+ {
+ fprintf (stderr,
+ opt.convert_links ?
+ _("Both --no-clobber and --convert-links were specified,"
+ " only --convert-links will be used.\n") :
+ _("Both --no-clobber and --convert-file-only were specified,"
+ " only --convert-file-only will be used.\n"));
+ opt.noclobber = false;
+ }
+
+ if (opt.reclevel == 0)
+ opt.reclevel = INFINITE_RECURSION; /* see recur.h for commentary */
+
+ if (opt.spider || opt.delete_after)
+ opt.no_dirstruct = true;
+
+ if (opt.page_requisites && !opt.recursive)
+ {
+ /* Don't set opt.recursive here because it would confuse the FTP
+ code. Instead, call retrieve_tree below when either
+ page_requisites or recursive is requested. */
+ opt.reclevel = 0;
+ if (!opt.no_dirstruct)
+ opt.dirstruct = 1; /* normally handled by cmd_spec_recursive() */
+ }
+
+ if (opt.verbose == -1)
+ opt.verbose = !opt.quiet;
+
+ if (!opt.verbose && opt.show_progress == -1)
+ opt.show_progress = false;
+
+ if (opt.quiet && opt.show_progress == -1)
+ opt.show_progress = false;
+
+ /* Sanity checks. */
+ if (opt.verbose && opt.quiet)
+ {
+ fprintf (stderr, _("Can't be verbose and quiet at the same time.\n"));
+ print_usage (1);
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ if (opt.timestamping && opt.noclobber)
+ {
+ fprintf (stderr, _("\
+Can't timestamp and not clobber old files at the same time.\n"));
+ print_usage (1);
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+#ifdef ENABLE_IPV6
+ if (opt.ipv4_only && opt.ipv6_only)
+ {
+ fprintf (stderr,
+ _("Cannot specify both --inet4-only and --inet6-only.\n"));
+ print_usage (1);
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+#endif
+ if (opt.output_document)
+ {
+ if ((opt.convert_links || opt.convert_file_only)
+ && (nurls > 1 || opt.page_requisites || opt.recursive))
+ {
+ fputs (_("\
+Cannot specify both -k or --convert-file-only and -O if multiple URLs are given, or in combination\n\
+with -p or -r. See the manual for details.\n\n"), stderr);
+ print_usage (1);
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ if (opt.page_requisites
+ || opt.recursive)
+ {
+ logprintf (LOG_NOTQUIET, "%s", _("\
+WARNING: combining -O with -r or -p will mean that all downloaded content\n\
+will be placed in the single file you specified.\n\n"));
+ }
+ if (opt.timestamping)
+ {
+ logprintf (LOG_NOTQUIET, "%s", _("\
+WARNING: timestamping does nothing in combination with -O. See the manual\n\
+for details.\n\n"));
+ opt.timestamping = false;
+ }
+ if (opt.noclobber && file_exists_p(opt.output_document, NULL))
+ {
+ /* Check if output file exists; if it does, exit. */
+ logprintf (LOG_VERBOSE,
+ _("File %s already there; not retrieving.\n"),
+ quote (opt.output_document));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ }
+
+ if (opt.warc_filename != 0)
+ {
+ if (opt.noclobber)
+ {
+ fprintf (stderr,
+ _("WARC output does not work with --no-clobber, "
+ "--no-clobber will be disabled.\n"));
+ opt.noclobber = false;
+ }
+ if (opt.timestamping)
+ {
+ fprintf (stderr,
+ _("WARC output does not work with timestamping, "
+ "timestamping will be disabled.\n"));
+ opt.timestamping = false;
+ }
+ if (opt.spider)
+ {
+ fprintf (stderr,
+ _("WARC output does not work with --spider.\n"));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ if (opt.always_rest || opt.start_pos >= 0)
+ {
+ fprintf (stderr,
+ _("WARC output does not work with --continue or"
+ " --start-pos, they will be disabled.\n"));
+ opt.always_rest = false;
+ opt.start_pos = -1;
+ }
+ if (opt.warc_cdx_dedup_filename != 0 && !opt.warc_digests_enabled)
+ {
+ fprintf (stderr,
+ _("Digests are disabled; WARC deduplication will "
+ "not find duplicate records.\n"));
+ }
+ if (opt.warc_keep_log)
+ {
+ opt.progress_type = xstrdup ("dot");
+ }
+ }
+
+#ifdef HAVE_LIBZ
+ if (opt.always_rest || opt.start_pos >= 0)
+ {
+ if (opt.compression == compression_auto)
+ {
+ /* Compression does not work with --continue or --start-pos.
+ Since compression was not explicitly set, it will be disabled. */
+ opt.compression = compression_none;
+ }
+ else if (opt.compression != compression_none)
+ {
+ fprintf (stderr,
+ _("Compression does not work with --continue or"
+ " --start-pos, they will be disabled.\n"));
+ opt.always_rest = false;
+ opt.start_pos = -1;
+ }
+ }
+#endif
+
+ if (opt.ask_passwd && opt.passwd)
+ {
+ fprintf (stderr,
+ _("Cannot specify both --ask-password and --password.\n"));
+ print_usage (1);
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+
+ if (opt.ask_passwd && !(opt.user || opt.http_user || opt.ftp_user))
+ {
+ fprintf(stderr,
+ _("WARNING: No username set with --ask-password. This is usually not what you want.\n"));
+ }
+
+ if (opt.start_pos >= 0 && opt.always_rest)
+ {
+ fprintf (stderr,
+ _("Specifying both --start-pos and --continue is not "
+ "recommended; --continue will be disabled.\n"));
+ opt.always_rest = false;
+ }
+
+ if (!nurls && !opt.input_filename
+#ifdef HAVE_METALINK
+ && !opt.input_metalink
+#endif
+ )
+ {
+ /* No URL specified. */
+#ifndef TESTING
+ fprintf (stderr, _("%s: missing URL\n"), exec_name);
+ print_usage (1);
+ fprintf (stderr, "\n");
+ /* #### Something nicer should be printed here -- similar to the
+ pre-1.5 `--help' page. */
+ fprintf (stderr, _("Try `%s --help' for more options.\n"), exec_name);
+#endif
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+
+ /* Compile the regular expressions. */
+ switch (opt.regex_type)
+ {
+#ifdef HAVE_LIBPCRE2
+ case regex_type_pcre:
+ opt.regex_compile_fun = compile_pcre2_regex;
+ opt.regex_match_fun = match_pcre2_regex;
+ break;
+#endif
+#ifdef HAVE_LIBPCRE
+ case regex_type_pcre:
+ opt.regex_compile_fun = compile_pcre_regex;
+ opt.regex_match_fun = match_pcre_regex;
+ break;
+#endif
+
+ case regex_type_posix:
+ default:
+ opt.regex_compile_fun = compile_posix_regex;
+ opt.regex_match_fun = match_posix_regex;
+ break;
+ }
+ if (opt.acceptregex_s)
+ {
+ opt.acceptregex = opt.regex_compile_fun (opt.acceptregex_s);
+ if (!opt.acceptregex)
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ if (opt.rejectregex_s)
+ {
+ opt.rejectregex = opt.regex_compile_fun (opt.rejectregex_s);
+ if (!opt.rejectregex)
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ if (opt.post_data || opt.post_file_name)
+ {
+ if (opt.post_data && opt.post_file_name)
+ {
+ fprintf (stderr, _("You cannot specify both --post-data and --post-file.\n"));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ else if (opt.method)
+ {
+ fprintf (stderr, _("You cannot use --post-data or --post-file along with --method. "
+ "--method expects data through --body-data and --body-file options\n"));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ }
+ if (opt.body_data || opt.body_file)
+ {
+ if (!opt.method)
+ {
+ fprintf (stderr, _("You must specify a method through --method=HTTPMethod "
+ "to use with --body-data or --body-file.\n"));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ else if (opt.body_data && opt.body_file)
+ {
+ fprintf (stderr, _("You cannot specify both --body-data and --body-file.\n"));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ }
+
+ /* Set various options as required for opt.method. */
+
+ /* When user specifies HEAD as the method, we do not wish to download any
+ files. Hence, set wget to run in spider mode. */
+ if (opt.method && c_strcasecmp (opt.method, "HEAD") == 0)
+ setoptval ("spider", "1", "spider");
+
+ /* Convert post_data to body-data and post_file_name to body-file options.
+ This is required so as to remove redundant code later on in gethttp().
+ The --post-data and --post-file options may also be removed in
+ the future hence it makes sense to convert them to aliases for
+ the more generic --method options.
+ This MUST occur only after the sanity checks so as to prevent the
+ user from setting both post and body options simultaneously.
+ */
+ if (opt.post_data || opt.post_file_name)
+ {
+ setoptval ("method", "POST", "method");
+ if (opt.post_data)
+ {
+ setoptval ("bodydata", opt.post_data, "body-data");
+ xfree(opt.post_data);
+ }
+ else
+ {
+ setoptval ("bodyfile", opt.post_file_name, "body-file");
+ xfree(opt.post_file_name);
+ }
+ }
+
+#ifdef ENABLE_IRI
+ if (opt.enable_iri)
+ {
+ if (opt.locale && !check_encoding_name (opt.locale))
+ xfree (opt.locale);
+
+ if (!opt.locale)
+ opt.locale = find_locale ();
+
+ if (opt.encoding_remote && !check_encoding_name (opt.encoding_remote))
+ xfree (opt.encoding_remote);
+ }
+#else
+ memset (&dummy_iri, 0, sizeof (dummy_iri));
+ if (opt.enable_iri || opt.locale || opt.encoding_remote)
+ {
+ /* sXXXav : be more specific... */
+ fprintf (stderr, _("This version does not have support for IRIs\n"));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+#endif
+
+ if (opt.ask_passwd)
+ {
+ opt.passwd = prompt_for_password ();
+
+ if (opt.passwd == NULL || opt.passwd[0] == '\0')
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+
+ if (opt.use_askpass)
+ {
+ if (opt.use_askpass[0] == '\0')
+ {
+ fprintf (stderr,
+ _("use-askpass requires a string or either environment variable WGET_ASKPASS or SSH_ASKPASS to be set.\n"));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ }
+
+#ifdef USE_WATT32
+ if (opt.wdebug)
+ dbug_init();
+ sock_init();
+#elif ! defined TESTING
+ if (opt.background)
+ {
+ bool logfile_changed = fork_to_background ();
+
+ if (logfile_changed)
+ log_init (opt.lfilename, append_to_log);
+ }
+#endif
+
+ /* Initialize progress. Have to do this after the options are
+ processed so we know where the log file is. */
+ if (opt.show_progress)
+ set_progress_implementation (opt.progress_type);
+
+ /* Open WARC file. */
+ if (opt.warc_filename != 0)
+ warc_init ();
+
+ DEBUGP (("DEBUG output created by Wget %s on %s.\n\n",
+ version_string, OS_TYPE));
+
+ /* Open the output filename if necessary. */
+
+/* 2005-04-17 SMS.
+ Note that having the output_stream ("-O") file opened here for an FTP
+ URL rather than in getftp() (ftp.c) (and the http equivalent) rather
+ limits the ability in VMS to open the file differently for ASCII
+ versus binary FTP there. (Of course, doing it here allows a open
+ failure to be detected immediately, without first connecting to the
+ server.)
+*/
+ if (opt.output_document)
+ {
+ if (HYPHENP (opt.output_document))
+ {
+#ifdef WINDOWS
+ _setmode (_fileno (stdout), _O_BINARY);
+#endif
+ output_stream = stdout;
+ }
+ else
+ {
+ struct stat st;
+
+#ifdef __VMS
+/* Common fopen() optional arguments:
+ sequential access only, access callback function.
+*/
+# define FOPEN_OPT_ARGS , "fop=sqo", "acc", acc_cb, &open_id
+ int open_id = 7;
+#else /* def __VMS */
+# define FOPEN_OPT_ARGS
+#endif /* def __VMS [else] */
+
+ output_stream = fopen (opt.output_document,
+ opt.always_rest ? "ab" : "wb"
+ FOPEN_OPT_ARGS);
+ if (output_stream == NULL)
+ {
+ perror (opt.output_document);
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ if (fstat (fileno (output_stream), &st) == 0 && S_ISREG (st.st_mode))
+ output_stream_regular = true;
+ }
+ if (!output_stream_regular && (opt.convert_links || opt.recursive))
+ {
+ fprintf (stderr, _("-k or -r can be used together with -O only if \
+outputting to a regular file.\n"));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ if (!output_stream_regular && (opt.convert_links || opt.convert_file_only))
+ {
+ fprintf (stderr, _("--convert-links or --convert-file-only can be used together \
+only if outputting to a regular file.\n"));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ }
+
+#ifdef HAVE_LIBCARES
+ if (opt.bind_dns_address || opt.dns_servers)
+ {
+ if (ares_library_init (ARES_LIB_INIT_ALL))
+ {
+ fprintf (stderr, _("Failed to init libcares\n"));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+
+ if (ares_init (&ares) != ARES_SUCCESS)
+ {
+ fprintf (stderr, _("Failed to init c-ares channel\n"));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+
+ if (opt.bind_dns_address)
+ {
+ struct in_addr a4;
+#ifdef ENABLE_IPV6
+ struct in6_addr a6;
+#endif
+
+ if (inet_pton (AF_INET, opt.bind_dns_address, &a4) == 1)
+ {
+ ares_set_local_ip4 (ares, ntohl (a4.s_addr));
+ }
+#ifdef ENABLE_IPV6
+ else if (inet_pton (AF_INET6, opt.bind_dns_address, &a6) == 1)
+ {
+ ares_set_local_ip6 (ares, (unsigned char *) &a6);
+ }
+#endif
+ else
+ {
+ fprintf (stderr, _("Failed to parse IP address '%s'\n"), opt.bind_dns_address);
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ }
+
+ if (opt.dns_servers)
+ {
+ int result;
+
+ if ((result = ares_set_servers_csv (ares, opt.dns_servers)) != ARES_SUCCESS)
+ {
+ fprintf (stderr, _("Failed to set DNS server(s) '%s' (%d)\n"), opt.dns_servers, result);
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ }
+ }
+#endif
+
+#ifdef __VMS
+ /* Set global ODS5 flag according to the specified destination (if
+ any), otherwise according to the current default device.
+ */
+ if (output_stream == NULL)
+ set_ods5_dest( "SYS$DISK");
+ else if (output_stream != stdout)
+ set_ods5_dest( opt.output_document);
+#endif /* def __VMS */
+
+#ifdef WINDOWS
+ ws_startup ();
+#endif
+
+#ifdef SIGHUP
+ /* Setup the signal handler to redirect output when hangup is
+ received. */
+ if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
+ signal(SIGHUP, redirect_output_signal);
+#endif
+ /* ...and do the same for SIGUSR1. */
+#ifdef SIGUSR1
+ signal (SIGUSR1, redirect_output_signal);
+#endif
+#ifdef SIGPIPE
+ /* Writing to a closed socket normally signals SIGPIPE, and the
+ process exits. What we want is to ignore SIGPIPE and just check
+ for the return value of write(). */
+ signal (SIGPIPE, SIG_IGN);
+#endif
+#ifdef SIGWINCH
+ signal (SIGWINCH, progress_handle_sigwinch);
+#endif
+
+#ifdef HAVE_HSTS
+ /* Load the HSTS database.
+ Maybe all the URLs are FTP(S), in which case HSTS would not be needed,
+ but this is the best place to do it, and it shouldn't be a critical
+ performance hit.
+ */
+ if (opt.hsts)
+ load_hsts ();
+#endif
+
+ /* Retrieve the URLs from argument list. */
+ for (i = 0; i < nurls; i++, optind++)
+ {
+ char *t;
+ char *filename = NULL, *redirected_URL = NULL;
+ int dt = 0, url_err;
+ /* Need to do a new struct iri every time, because
+ * retrieve_url may modify it in some circumstances,
+ * currently. */
+ struct iri *iri = iri_new ();
+ struct url *url_parsed;
+
+ t = rewrite_shorthand_url (argv[optind]);
+ if (!t)
+ t = argv[optind];
+
+ set_uri_encoding (iri, opt.locale, true);
+ url_parsed = url_parse (t, &url_err, iri, true);
+
+ if (!url_parsed)
+ {
+ char *error = url_error (t, url_err);
+ logprintf (LOG_NOTQUIET, "%s: %s.\n",t, error);
+ xfree (error);
+ inform_exit_status (URLERROR);
+ }
+ else
+ {
+ /* Request credentials if use_askpass is set. */
+ if (opt.use_askpass)
+ use_askpass (url_parsed);
+
+ if ((opt.recursive || opt.page_requisites)
+ && ((url_scheme (t) != SCHEME_FTP
+#ifdef HAVE_SSL
+ && url_scheme (t) != SCHEME_FTPS
+#endif
+ )
+ || url_uses_proxy (url_parsed)))
+ {
+ int old_follow_ftp = opt.follow_ftp;
+
+ /* Turn opt.follow_ftp on in case of recursive FTP retrieval */
+ if (url_scheme (t) == SCHEME_FTP
+#ifdef HAVE_SSL
+ || url_scheme (t) == SCHEME_FTPS
+#endif
+ )
+ opt.follow_ftp = 1;
+
+ retrieve_tree (url_parsed, NULL);
+
+ opt.follow_ftp = old_follow_ftp;
+ }
+ else
+ {
+ retrieve_url (url_parsed, t, &filename, &redirected_URL, NULL,
+ &dt, opt.recursive, iri, true);
+ }
+
+ if (opt.delete_after && filename != NULL && file_exists_p (filename, NULL))
+ {
+ DEBUGP (("Removing file due to --delete-after in main():\n"));
+ logprintf (LOG_VERBOSE, _("Removing %s.\n"), filename);
+ if (unlink (filename))
+ logprintf (LOG_NOTQUIET, "unlink: %s\n", strerror (errno));
+ }
+ xfree (redirected_URL);
+ xfree (filename);
+ url_free (url_parsed);
+ }
+
+ iri_free (iri);
+
+ if (t != argv[optind])
+ xfree (t);
+ }
+
+ /* And then from the input file, if any. */
+ if (opt.input_filename)
+ {
+ int count;
+ int status;
+ status = retrieve_from_file (opt.input_filename, opt.force_html, &count);
+ inform_exit_status (status);
+ if (!count)
+ logprintf (LOG_NOTQUIET, _("No URLs found in %s.\n"),
+ opt.input_filename);
+ }
+
+#ifdef HAVE_METALINK
+ /* Finally, from metlink file, if any. */
+ if (opt.input_metalink)
+ {
+ metalink_error_t meta_err;
+ uerr_t retr_err;
+ metalink_t *metalink;
+
+ meta_err = metalink_parse_file (opt.input_metalink, &metalink);
+
+ if (meta_err)
+ {
+ logprintf (LOG_NOTQUIET, _("Unable to parse metalink file %s.\n"),
+ opt.input_metalink);
+ retr_err = METALINK_PARSE_ERROR;
+ }
+ else
+ {
+ /* We need to sort the resources if preferred location
+ was specified by the user. */
+ if (opt.preferred_location && opt.preferred_location[0])
+ {
+ metalink_file_t **mfile_ptr;
+ for (mfile_ptr = metalink->files; *mfile_ptr; mfile_ptr++)
+ {
+ metalink_resource_t **mres_ptr;
+ metalink_file_t *mfile = *mfile_ptr;
+ size_t mres_count = 0;
+
+ for (mres_ptr = mfile->resources; *mres_ptr; mres_ptr++)
+ mres_count++;
+
+ stable_sort (mfile->resources,
+ mres_count,
+ sizeof (metalink_resource_t *),
+ metalink_res_cmp);
+ }
+ }
+ retr_err = retrieve_from_metalink (metalink);
+ if (retr_err != RETROK)
+ {
+ logprintf (LOG_NOTQUIET,
+ _("Could not download all resources from %s.\n"),
+ quote (opt.input_metalink));
+ }
+ metalink_delete (metalink);
+ }
+ inform_exit_status (retr_err);
+ }
+#endif /* HAVE_METALINK */
+
+ /* Print broken links. */
+ if (opt.recursive && opt.spider)
+ print_broken_links ();
+
+ /* Print the downloaded sum. */
+ if ((opt.recursive || opt.page_requisites
+ || nurls > 1
+ || (opt.input_filename && total_downloaded_bytes != 0))
+ &&
+ total_downloaded_bytes != 0)
+ {
+ double end_time = ptimer_measure (timer);
+ char *wall_time = xstrdup (secs_to_human_time (end_time - start_time));
+ char *download_time = xstrdup (secs_to_human_time (total_download_time));
+
+ ptimer_destroy (timer); timer = NULL;
+
+ logprintf (LOG_NOTQUIET,
+ _("FINISHED --%s--\nTotal wall clock time: %s\n"
+ "Downloaded: %d files, %s in %s (%s)\n"),
+ datetime_str (time (NULL)),
+ wall_time,
+ numurls,
+ human_readable (total_downloaded_bytes, 10, 1),
+ download_time,
+ retr_rate (total_downloaded_bytes, total_download_time));
+ xfree (wall_time);
+ xfree (download_time);
+
+ /* Print quota warning, if exceeded. */
+ if (opt.quota && total_downloaded_bytes > opt.quota)
+ logprintf (LOG_NOTQUIET,
+ _("Download quota of %s EXCEEDED!\n"),
+ human_readable (opt.quota, 10, 1));
+ }
+
+ if (opt.cookies_output)
+ save_cookies ();
+
+#ifdef HAVE_HSTS
+ if (opt.hsts && hsts_store)
+ save_hsts ();
+#endif
+
+ if ((opt.convert_links || opt.convert_file_only) && !opt.delete_after)
+ convert_all_links ();
+
+ cleanup ();
+
+ exit (get_exit_status ());
+}
+
+/*
+ * vim: et ts=2 sw=2
+ */
diff --git a/src/metalink.c b/src/metalink.c
new file mode 100644
index 0000000..81cd1b3
--- /dev/null
+++ b/src/metalink.c
@@ -0,0 +1,1599 @@
+/* Metalink module.
+ Copyright (C) 2015, 2018-2020 Free Software Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at
+your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+#ifdef HAVE_METALINK
+
+#include "metalink.h"
+#include "retr.h"
+#include "exits.h"
+#include "utils.h"
+#include "md2.h"
+#include "md4.h"
+#include "md5.h"
+#include "sha1.h"
+#include "sha256.h"
+#include "sha512.h"
+#include "filename.h"
+#include "xmemdup0.h"
+#include "xstrndup.h"
+#include "c-strcase.h"
+#include <errno.h>
+#include <unistd.h> /* For unlink. */
+#include <metalink/metalink_parser.h>
+#ifdef HAVE_GPGME
+#include <gpgme.h>
+#include <fcntl.h> /* For open and close. */
+#endif
+
+#ifdef TESTING
+#include "../tests/unit-tests.h"
+#endif
+
+/* Loop through all files in metalink structure and retrieve them.
+ Returns RETROK if all files were downloaded.
+ Returns last retrieval error (from retrieve_url) if some files
+ could not be downloaded. */
+uerr_t
+retrieve_from_metalink (const metalink_t* metalink)
+{
+ metalink_file_t **mfile_ptr;
+ uerr_t last_retr_err = RETROK; /* Store last encountered retrieve error. */
+
+ FILE *_output_stream = output_stream;
+ bool _output_stream_regular = output_stream_regular;
+ char *_output_document = opt.output_document;
+
+ /* metalink file counter */
+ unsigned mfc = 0;
+
+ /* metalink retrieval type */
+ const char *metatpy = metalink->origin ? "Metalink/HTTP" : "Metalink/XML";
+
+ /* metalink mother source */
+ char *metasrc = metalink->origin ? metalink->origin : opt.input_metalink;
+
+ DEBUGP (("Retrieving from Metalink %s\n", quote (metasrc)));
+
+ /* No files to download. */
+ if (!metalink->files)
+ return RETROK;
+
+ if (opt.output_document)
+ {
+ /* We cannot support output_document as we need to compute checksum
+ of downloaded file, and to remove it if the checksum is bad. */
+ logputs (LOG_NOTQUIET,
+ _("-O not supported for metalink download. Ignoring.\n"));
+ }
+
+ for (mfile_ptr = metalink->files; *mfile_ptr; mfile_ptr++)
+ {
+ metalink_file_t *mfile = *mfile_ptr;
+ metalink_resource_t **mres_ptr;
+ char *planname = NULL;
+ char *trsrname = NULL;
+ char *filename;
+ char *basename;
+ char *safename = NULL;
+ char *destname = NULL;
+ bool size_ok = false;
+ bool hash_ok = false;
+
+ uerr_t retr_err = METALINK_MISSING_RESOURCE;
+
+ /* -1 -> file should be rejected
+ 0 -> could not verify
+ 1 -> verified successfully */
+ char sig_status = 0;
+
+ bool skip_mfile = false;
+
+ output_stream = NULL;
+
+ mfc++;
+
+ /* The directory prefix for opt.metalink_over_http is handled by
+ src/url.c (url_file_name), do not add it a second time. */
+ if (!metalink->origin && opt.dir_prefix && strlen (opt.dir_prefix))
+ planname = aprintf ("%s/%s", opt.dir_prefix, mfile->name);
+ else
+ planname = xstrdup (mfile->name);
+
+ /* With Metalink/HTTP, trust the metalink file name (from cli).
+ With --trust-server-names, trust the Metalink/XML file name,
+ otherwise, use the basename of --input-metalink followed by
+ the metalink file counter as suffix. */
+ if (metalink->origin || opt.trustservernames)
+ {
+ trsrname = xstrdup (mfile->name);
+ }
+ else
+ {
+ trsrname = xstrdup (get_metalink_basename (opt.input_metalink));
+ append_suffix_number (&trsrname, ".#", mfc);
+ }
+
+ /* Add the directory prefix for opt.input_metalink. */
+ if (!metalink->origin && opt.dir_prefix && strlen (opt.dir_prefix))
+ filename = aprintf ("%s/%s", opt.dir_prefix, trsrname);
+ else
+ filename = xstrdup (trsrname);
+
+ /* Enforce libmetalink's metalink_check_safe_path(). */
+ basename = get_metalink_basename (filename);
+ safename = metalink_check_safe_path (filename) ? filename : basename;
+
+ DEBUGP (("Processing metalink file %s...\n", quote (mfile->name)));
+ DEBUGP (("\n"));
+ DEBUGP ((" %s\n", metatpy));
+ DEBUGP (("\n"));
+ DEBUGP ((" --trust-server-names %s\n", opt.trustservernames ? "true" : "false"));
+ DEBUGP ((" --directory-prefix %s\n", quote (opt.dir_prefix ? opt.dir_prefix : "")));
+ DEBUGP (("\n"));
+ DEBUGP ((" Counted metalink file %u\n", mfc));
+ DEBUGP ((" Planned metalink file %s\n", quote (planname ? planname : "")));
+ DEBUGP ((" Trusted metalink file %s\n", quote (trsrname ? trsrname : "")));
+ DEBUGP ((" Current metalink file %s\n", quote (filename ? filename : "")));
+ DEBUGP ((" Cleaned metalink file %s\n", quote (basename ? basename : "")));
+ DEBUGP ((" Secured metalink file %s\n", quote (safename ? safename : "")));
+ DEBUGP (("\n"));
+
+ /* Verify if the planned metalink file name is safe. */
+ if (!safename || strcmp (planname, safename))
+ {
+ logprintf (LOG_NOTQUIET,
+ _("[--trust-server-names %s, --directory-prefix=%s]\n"),
+ (opt.trustservernames ? "true" : "false"),
+ quote (opt.dir_prefix ? opt.dir_prefix : ""));
+ logprintf (LOG_NOTQUIET,
+ _("Planned metalink file: %s\n"),
+ quote (planname ? planname : ""));
+ logprintf (LOG_NOTQUIET,
+ _("Secured metalink file: %s\n"),
+ quote (safename ? safename : ""));
+ if (!safename)
+ {
+ logprintf (LOG_NOTQUIET,
+ _("Rejecting metalink file. Unsafe name.\n"));
+ xfree (planname);
+ xfree (trsrname);
+ xfree (filename);
+ continue;
+ }
+ }
+
+ /* Process the chosen application/metalink4+xml metaurl. */
+ if (opt.metalink_index >= 0)
+ {
+ int _metalink_index = opt.metalink_index;
+
+ metalink_metaurl_t **murl_ptr;
+ int abs_count = 0, meta_count = 0;
+
+ uerr_t x_retr_err = METALINK_MISSING_RESOURCE;
+
+ opt.metalink_index = -1;
+
+ DEBUGP (("Searching application/metalink4+xml ordinal number %d...\n", _metalink_index));
+
+ if (mfile->metaurls && mfile->metaurls[0])
+ for (murl_ptr = mfile->metaurls; *murl_ptr; murl_ptr++)
+ {
+ metalink_t* metaurl_xml;
+ metalink_error_t meta_err;
+ metalink_metaurl_t *murl = *murl_ptr;
+
+ char *_dir_prefix = opt.dir_prefix;
+ char *_input_metalink = opt.input_metalink;
+
+ char *metafile = NULL;
+ char *metadest = NULL;
+ char *metadir = NULL;
+
+ abs_count++;
+
+ if (strcmp (murl->mediatype, "application/metalink4+xml"))
+ continue;
+
+ meta_count++;
+
+ DEBUGP ((" Ordinal number %d: %s\n", meta_count, quote (murl->url)));
+
+ if (_metalink_index > 0)
+ {
+ if (meta_count < _metalink_index)
+ continue;
+ else if (meta_count > _metalink_index)
+ break;
+ }
+
+ logprintf (LOG_NOTQUIET,
+ _("Processing metaurl %s...\n"), quote (murl->url));
+
+ /* Metalink/XML download file name. */
+ metafile = xstrdup (safename);
+
+ if (opt.trustservernames)
+ replace_metalink_basename (&metafile, murl->name ? murl->name : murl->url);
+ else
+ append_suffix_number (&metafile, ".meta#", meta_count);
+
+ if (!metalink_check_safe_path (metafile))
+ {
+ logprintf (LOG_NOTQUIET,
+ _("Rejecting metaurl file %s. Unsafe name.\n"),
+ quote (metafile));
+ xfree (metafile);
+ if (_metalink_index > 0)
+ break;
+ continue;
+ }
+
+ /* For security reasons, always save metalink metaurl
+ files as new unique files. Keep them on failure. */
+ x_retr_err = fetch_metalink_file (murl->url, false, false,
+ metafile, &metadest);
+
+ /* On failure, try the next metalink metaurl. */
+ if (x_retr_err != RETROK)
+ {
+ logprintf (LOG_VERBOSE,
+ _("Failed to download %s. Skipping metaurl.\n"),
+ quote (metadest ? metadest : metafile));
+ inform_exit_status (x_retr_err);
+ xfree (metadest);
+ xfree (metafile);
+ if (_metalink_index > 0)
+ break;
+ continue;
+ }
+
+ /* Parse Metalink/XML. */
+ meta_err = metalink_parse_file (metadest, &metaurl_xml);
+
+ /* On failure, try the next metalink metaurl. */
+ if (meta_err)
+ {
+ logprintf (LOG_NOTQUIET,
+ _("Unable to parse metaurl file %s.\n"), quote (metadest));
+ x_retr_err = METALINK_PARSE_ERROR;
+ inform_exit_status (x_retr_err);
+ xfree (metadest);
+ xfree (metafile);
+ if (_metalink_index > 0)
+ break;
+ continue;
+ }
+
+ /* We need to sort the resources if preferred location
+ was specified by the user. */
+ if (opt.preferred_location && opt.preferred_location[0])
+ {
+ metalink_file_t **x_mfile_ptr;
+ for (x_mfile_ptr = metaurl_xml->files; *x_mfile_ptr; x_mfile_ptr++)
+ {
+ metalink_resource_t **x_mres_ptr;
+ metalink_file_t *x_mfile = *x_mfile_ptr;
+ size_t mres_count = 0;
+
+ for (x_mres_ptr = x_mfile->resources; *x_mres_ptr; x_mres_ptr++)
+ mres_count++;
+
+ stable_sort (x_mfile->resources,
+ mres_count,
+ sizeof (metalink_resource_t *),
+ metalink_res_cmp);
+ }
+ }
+
+ /* Insert the current "Directory Options". */
+ if (metalink->origin)
+ {
+ /* WARNING: Do not use lib/dirname.c (dir_name) to
+ get the directory name, it may append a dot '.'
+ character to the directory name. */
+ metadir = xstrdup (planname);
+ replace_metalink_basename (&metadir, NULL);
+ }
+ else
+ {
+ metadir = xstrdup (opt.dir_prefix);
+ }
+
+ opt.dir_prefix = metadir;
+ opt.input_metalink = metadest;
+
+ x_retr_err = retrieve_from_metalink (metaurl_xml);
+
+ if (x_retr_err != RETROK)
+ logprintf (LOG_NOTQUIET,
+ _("Could not download all resources from %s.\n"),
+ quote (metadest));
+
+ metalink_delete (metaurl_xml);
+ metaurl_xml = NULL;
+
+ opt.input_metalink = _input_metalink;
+ opt.dir_prefix = _dir_prefix;
+
+ xfree (metadir);
+ xfree (metadest);
+ xfree (metafile);
+
+ break;
+ }
+
+ if (x_retr_err != RETROK)
+ logprintf (LOG_NOTQUIET, _("Metaurls processing returned with error.\n"));
+
+ xfree (destname);
+ xfree (filename);
+ xfree (trsrname);
+ xfree (planname);
+
+ opt.output_document = _output_document;
+ output_stream_regular = _output_stream_regular;
+ output_stream = _output_stream;
+
+ opt.metalink_index = _metalink_index;
+
+ return x_retr_err;
+ }
+
+ /* Resources are sorted by priority. */
+ for (mres_ptr = mfile->resources;
+ *mres_ptr && mfile->checksums && !skip_mfile; mres_ptr++)
+ {
+ metalink_resource_t *mres = *mres_ptr;
+ metalink_checksum_t **mchksum_ptr, *mchksum;
+ struct iri *iri;
+ struct url *url;
+ file_stats_t flstats;
+ int url_err;
+
+ clean_metalink_string (&mres->url);
+
+ if (!RES_TYPE_SUPPORTED (mres->type))
+ {
+ logprintf (LOG_VERBOSE,
+ _("Resource type %s not supported, ignoring...\n"),
+ quote (mres->type));
+ continue;
+ }
+
+ /* The file is fully downloaded, but some problems were
+ encountered (checksum failure?). The loop had been
+ continued to switch to the next url. */
+ if (output_stream && retr_err == RETROK)
+ {
+ /* Do not rename/remove a continued file. Skip it. */
+ if (opt.always_rest)
+ {
+ skip_mfile = true;
+ continue;
+ }
+
+ fclose (output_stream);
+ output_stream = NULL;
+ badhash_or_remove (destname);
+ xfree (destname);
+ }
+ else if (!output_stream && destname)
+ {
+ xfree (destname);
+ }
+
+ retr_err = METALINK_RETR_ERROR;
+
+ /* Parse our resource URL. */
+ iri = iri_new ();
+ set_uri_encoding (iri, opt.locale, true);
+ url = url_parse (mres->url, &url_err, iri, false);
+
+ if (!url)
+ {
+ char *error = url_error (mres->url, url_err);
+ logprintf (LOG_NOTQUIET, "%s: %s.\n", mres->url, error);
+ xfree (error);
+ inform_exit_status (URLERROR);
+ iri_free (iri);
+ continue;
+ }
+ else
+ {
+ /* Avoid recursive Metalink from HTTP headers. */
+ bool _metalink_http = opt.metalink_over_http;
+
+ /* If output_stream is not NULL, then we have failed on
+ previous resource and are retrying. Thus, continue
+ with the next resource. Do not close output_stream
+ while iterating over the resources, or the download
+ progress will be lost. */
+ if (output_stream)
+ {
+ DEBUGP (("Previous resource failed, continue with next resource.\n"));
+ }
+ else
+ {
+ /* Assure proper local file name regardless of the URL
+ of particular Metalink resource.
+ To do that we create the local file here and put
+ it as output_stream. We restore the original configuration
+ after we are finished with the file. */
+ if (opt.always_rest)
+ /* continue previous download */
+ output_stream = fopen (safename, "ab");
+ else
+ /* create a file with an unique name */
+ output_stream = unique_create (safename, true, &destname);
+ }
+
+ output_stream_regular = true;
+
+ /*
+ At this point, if output_stream is NULL, the file
+ couldn't be created/opened.
+
+ This happens when the metalink:file has a "path/file"
+ name format and its directory tree cannot be created:
+ * stdio.h (fopen)
+ * src/utils.c (unique_create)
+
+ RFC5854 requires a proper "path/file" format handling,
+ this can be achieved setting opt.output_document while
+ output_stream is left to NULL:
+ * src/http.c (open_output_stream): If output_stream is
+ NULL, create the opt.output_document "path/file"
+ */
+ if (!destname)
+ destname = xstrdup (safename);
+
+ /* Store the real file name for displaying in messages,
+ and for proper RFC5854 "path/file" handling. */
+ opt.output_document = destname;
+
+ opt.metalink_over_http = false;
+ DEBUGP (("Storing to %s\n", destname));
+ retr_err = retrieve_url (url, mres->url, NULL, NULL,
+ NULL, NULL, opt.recursive, iri, false);
+ opt.metalink_over_http = _metalink_http;
+
+ /*
+ Bug: output_stream is NULL, but retrieve_url() somehow
+ created destname.
+
+ Bugfix: point output_stream to destname if it exists.
+ */
+ memset(&flstats, 0, sizeof(flstats));
+ if (!output_stream && file_exists_p (destname, &flstats))
+ output_stream = fopen_stat (destname, "ab", &flstats);
+ }
+ url_free (url);
+ iri_free (iri);
+
+ if (retr_err == RETROK)
+ {
+ FILE *local_file;
+
+ /* Check the digest. */
+ local_file = fopen (destname, "rb");
+ if (!local_file)
+ {
+ logprintf (LOG_NOTQUIET, _("Could not open downloaded file.\n"));
+ continue;
+ }
+
+ size_ok = false;
+ logprintf (LOG_VERBOSE, _("Computing size for %s\n"), quote (destname));
+
+ if (!mfile->size)
+ {
+ size_ok = true;
+ logprintf (LOG_VERBOSE, _("File size not declared. Skipping check.\n"));
+ }
+ else
+ {
+ wgint local_file_size = file_size (destname);
+
+ if (local_file_size == -1)
+ {
+ logprintf (LOG_NOTQUIET, _("Could not get downloaded file's size.\n"));
+ fclose (local_file);
+ local_file = NULL;
+ continue;
+ }
+
+ /* FIXME: what about int64? */
+ DEBUGP (("Declared size: %lld\n", mfile->size));
+ DEBUGP (("Computed size: %lld\n", (long long) local_file_size));
+
+ if (local_file_size != (wgint) mfile->size)
+ {
+ logprintf (LOG_NOTQUIET, _("Size mismatch for file %s.\n"), quote (destname));
+ fclose (local_file);
+ local_file = NULL;
+ continue;
+ }
+ else
+ {
+ size_ok = true;
+ logputs (LOG_VERBOSE, _("Size matches.\n"));
+ }
+ }
+
+ for (mchksum_ptr = mfile->checksums; *mchksum_ptr; mchksum_ptr++)
+ {
+ char md2[MD2_DIGEST_SIZE];
+ char md2_txt[2 * MD2_DIGEST_SIZE + 1];
+
+ char md4[MD4_DIGEST_SIZE];
+ char md4_txt[2 * MD4_DIGEST_SIZE + 1];
+
+ char md5[MD5_DIGEST_SIZE];
+ char md5_txt[2 * MD5_DIGEST_SIZE + 1];
+
+ char sha1[SHA1_DIGEST_SIZE];
+ char sha1_txt[2 * SHA1_DIGEST_SIZE + 1];
+
+ char sha224[SHA224_DIGEST_SIZE];
+ char sha224_txt[2 * SHA224_DIGEST_SIZE + 1];
+
+ char sha256[SHA256_DIGEST_SIZE];
+ char sha256_txt[2 * SHA256_DIGEST_SIZE + 1];
+
+ char sha384[SHA384_DIGEST_SIZE];
+ char sha384_txt[2 * SHA384_DIGEST_SIZE + 1];
+
+ char sha512[SHA512_DIGEST_SIZE];
+ char sha512_txt[2 * SHA512_DIGEST_SIZE + 1];
+
+ hash_ok = false;
+ mchksum = *mchksum_ptr;
+
+ /* I have seen both variants... */
+ if (c_strcasecmp (mchksum->type, "md2")
+ && c_strcasecmp (mchksum->type, "md4")
+ && c_strcasecmp (mchksum->type, "md5")
+ && c_strcasecmp (mchksum->type, "sha1")
+ && c_strcasecmp (mchksum->type, "sha-1")
+ && c_strcasecmp (mchksum->type, "sha224")
+ && c_strcasecmp (mchksum->type, "sha-224")
+ && c_strcasecmp (mchksum->type, "sha256")
+ && c_strcasecmp (mchksum->type, "sha-256")
+ && c_strcasecmp (mchksum->type, "sha384")
+ && c_strcasecmp (mchksum->type, "sha-384")
+ && c_strcasecmp (mchksum->type, "sha512")
+ && c_strcasecmp (mchksum->type, "sha-512"))
+ {
+ DEBUGP (("Ignoring unsupported checksum type %s.\n",
+ quote (mchksum->type)));
+ continue;
+ }
+
+ logprintf (LOG_VERBOSE, _("Computing checksum for %s\n"),
+ quote (destname));
+
+ DEBUGP (("Declared hash: %s\n", mchksum->hash));
+
+ if (c_strcasecmp (mchksum->type, "md2") == 0)
+ {
+ md2_stream (local_file, md2);
+ wg_hex_to_string (md2_txt, md2, MD2_DIGEST_SIZE);
+ DEBUGP (("Computed hash: %s\n", md2_txt));
+ if (!strcmp (md2_txt, mchksum->hash))
+ hash_ok = true;
+ }
+ else if (c_strcasecmp (mchksum->type, "md4") == 0)
+ {
+ md4_stream (local_file, md4);
+ wg_hex_to_string (md4_txt, md4, MD4_DIGEST_SIZE);
+ DEBUGP (("Computed hash: %s\n", md4_txt));
+ if (!strcmp (md4_txt, mchksum->hash))
+ hash_ok = true;
+ }
+ else if (c_strcasecmp (mchksum->type, "md5") == 0)
+ {
+ md5_stream (local_file, md5);
+ wg_hex_to_string (md5_txt, md5, MD5_DIGEST_SIZE);
+ DEBUGP (("Computed hash: %s\n", md5_txt));
+ if (!strcmp (md5_txt, mchksum->hash))
+ hash_ok = true;
+ }
+ else if (c_strcasecmp (mchksum->type, "sha1") == 0
+ || c_strcasecmp (mchksum->type, "sha-1") == 0)
+ {
+ sha1_stream (local_file, sha1);
+ wg_hex_to_string (sha1_txt, sha1, SHA1_DIGEST_SIZE);
+ DEBUGP (("Computed hash: %s\n", sha1_txt));
+ if (!strcmp (sha1_txt, mchksum->hash))
+ hash_ok = true;
+ }
+ else if (c_strcasecmp (mchksum->type, "sha224") == 0
+ || c_strcasecmp (mchksum->type, "sha-224") == 0)
+ {
+ sha224_stream (local_file, sha224);
+ wg_hex_to_string (sha224_txt, sha224, SHA224_DIGEST_SIZE);
+ DEBUGP (("Computed hash: %s\n", sha224_txt));
+ if (!strcmp (sha224_txt, mchksum->hash))
+ hash_ok = true;
+ }
+ else if (c_strcasecmp (mchksum->type, "sha256") == 0
+ || c_strcasecmp (mchksum->type, "sha-256") == 0)
+ {
+ sha256_stream (local_file, sha256);
+ wg_hex_to_string (sha256_txt, sha256, SHA256_DIGEST_SIZE);
+ DEBUGP (("Computed hash: %s\n", sha256_txt));
+ if (!strcmp (sha256_txt, mchksum->hash))
+ hash_ok = true;
+ }
+ else if (c_strcasecmp (mchksum->type, "sha384") == 0
+ || c_strcasecmp (mchksum->type, "sha-384") == 0)
+ {
+ sha384_stream (local_file, sha384);
+ wg_hex_to_string (sha384_txt, sha384, SHA384_DIGEST_SIZE);
+ DEBUGP (("Computed hash: %s\n", sha384_txt));
+ if (!strcmp (sha384_txt, mchksum->hash))
+ hash_ok = true;
+ }
+ else if (c_strcasecmp (mchksum->type, "sha512") == 0
+ || c_strcasecmp (mchksum->type, "sha-512") == 0)
+ {
+ sha512_stream (local_file, sha512);
+ wg_hex_to_string (sha512_txt, sha512, SHA512_DIGEST_SIZE);
+ DEBUGP (("Computed hash: %s\n", sha512_txt));
+ if (!strcmp (sha512_txt, mchksum->hash))
+ hash_ok = true;
+ }
+
+ if (hash_ok)
+ {
+ logputs (LOG_VERBOSE,
+ _("Checksum matches.\n"));
+ }
+ else
+ {
+ logprintf (LOG_NOTQUIET,
+ _("Checksum mismatch for file %s.\n"),
+ quote (destname));
+ }
+
+ /* Stop as soon as we checked the supported checksum. */
+ break;
+ } /* Iterate over available checksums. */
+ fclose (local_file);
+ local_file = NULL;
+
+ if (!hash_ok)
+ continue;
+
+ sig_status = 0; /* Not verified. */
+
+#ifdef HAVE_GPGME
+ /* Check the crypto signature.
+
+ Note that the signatures from Metalink in XML will not be
+ parsed when using libmetalink version older than 0.1.3.
+ Metalink-over-HTTP is not affected by this problem. */
+ if (mfile->signature)
+ {
+ metalink_signature_t *msig = mfile->signature;
+ gpgme_error_t gpgerr;
+ gpgme_ctx_t gpgctx;
+ gpgme_data_t gpgsigdata, gpgdata;
+ gpgme_verify_result_t gpgres;
+ gpgme_signature_t gpgsig;
+ int fd;
+
+ /* Initialize the library - as name suggests. */
+ gpgme_check_version (NULL);
+
+ /* Open data file. */
+ fd = open (destname, O_RDONLY);
+ if (fd == -1)
+ {
+ logputs (LOG_NOTQUIET,
+ _("Could not open downloaded file for signature "
+ "verification.\n"));
+ goto gpg_skip_verification;
+ }
+
+ /* Assign file descriptor to GPG data structure. */
+ gpgerr = gpgme_data_new_from_fd (&gpgdata, fd);
+ if (gpgerr != GPG_ERR_NO_ERROR)
+ {
+ logprintf (LOG_NOTQUIET,
+ "GPGME data_new_from_fd: %s\n",
+ gpgme_strerror (gpgerr));
+ goto gpg_skip_verification;
+ }
+
+ /* Prepare new GPGME context. */
+ gpgerr = gpgme_new (&gpgctx);
+ if (gpgerr != GPG_ERR_NO_ERROR)
+ {
+ logprintf (LOG_NOTQUIET,
+ "GPGME new: %s\n",
+ gpgme_strerror (gpgerr));
+ gpgme_data_release (gpgdata);
+ goto gpg_skip_verification;
+ }
+
+ DEBUGP (("Verifying signature %s:\n%s\n",
+ quote (msig->mediatype),
+ msig->signature));
+
+ /* Check signature type. */
+ if (strcmp (msig->mediatype, "application/pgp-signature"))
+ {
+ /* Unsupported signature type. */
+ gpgme_release (gpgctx);
+ gpgme_data_release (gpgdata);
+ goto gpg_skip_verification;
+ }
+
+ gpgerr = gpgme_set_protocol (gpgctx, GPGME_PROTOCOL_OpenPGP);
+ if (gpgerr != GPG_ERR_NO_ERROR)
+ {
+ logprintf (LOG_NOTQUIET,
+ "GPGME set_protocol: %s\n",
+ gpgme_strerror (gpgerr));
+ gpgme_release (gpgctx);
+ gpgme_data_release (gpgdata);
+ goto gpg_skip_verification;
+ }
+
+ /* Load the signature. */
+ gpgerr = gpgme_data_new_from_mem (&gpgsigdata,
+ msig->signature,
+ strlen (msig->signature),
+ 0);
+ if (gpgerr != GPG_ERR_NO_ERROR)
+ {
+ logprintf (LOG_NOTQUIET,
+ _("GPGME data_new_from_mem: %s\n"),
+ gpgme_strerror (gpgerr));
+ gpgme_release (gpgctx);
+ gpgme_data_release (gpgdata);
+ goto gpg_skip_verification;
+ }
+
+ /* Verify the signature. */
+ gpgerr = gpgme_op_verify (gpgctx, gpgsigdata, gpgdata, NULL);
+ if (gpgerr != GPG_ERR_NO_ERROR)
+ {
+ logprintf (LOG_NOTQUIET,
+ _("GPGME op_verify: %s\n"),
+ gpgme_strerror (gpgerr));
+ gpgme_data_release (gpgsigdata);
+ gpgme_release (gpgctx);
+ gpgme_data_release (gpgdata);
+ goto gpg_skip_verification;
+ }
+
+ /* Check the results. */
+ gpgres = gpgme_op_verify_result (gpgctx);
+ if (!gpgres)
+ {
+ logputs (LOG_NOTQUIET,
+ _("GPGME op_verify_result: NULL\n"));
+ gpgme_data_release (gpgsigdata);
+ gpgme_release (gpgctx);
+ gpgme_data_release (gpgdata);
+ goto gpg_skip_verification;
+ }
+
+ /* The list is null-terminated. */
+ for (gpgsig = gpgres->signatures; gpgsig; gpgsig = gpgsig->next)
+ {
+ DEBUGP (("Checking signature %s\n", gpgsig->fpr));
+
+ if (gpgsig->summary
+ & (GPGME_SIGSUM_VALID | GPGME_SIGSUM_GREEN))
+ {
+ logputs (LOG_VERBOSE,
+ _("Signature validation succeeded.\n"));
+ sig_status = 1;
+ break;
+ }
+
+ if (gpgsig->summary & GPGME_SIGSUM_RED)
+ {
+ logputs (LOG_NOTQUIET,
+ _("Invalid signature. Rejecting resource.\n"));
+ sig_status = -1;
+ break;
+ }
+
+ if (gpgsig->summary == 0
+ && (gpgsig->status & 0xFFFF) == GPG_ERR_NO_ERROR)
+ {
+ logputs (LOG_VERBOSE,
+ _("Data matches signature, but signature "
+ "is not trusted.\n"));
+ }
+
+ if ((gpgsig->status & 0xFFFF) != GPG_ERR_NO_ERROR)
+ {
+ logprintf (LOG_NOTQUIET,
+ "GPGME: %s\n",
+ gpgme_strerror (gpgsig->status & 0xFFFF));
+ }
+ }
+ gpgme_data_release (gpgsigdata);
+ gpgme_release (gpgctx);
+ gpgme_data_release (gpgdata);
+gpg_skip_verification:
+ if (fd != -1)
+ close (fd);
+ } /* endif (mfile->signature) */
+#endif
+ /* Stop if file was downloaded with success. */
+ if (sig_status >= 0)
+ break;
+ } /* endif RETR_OK. */
+ } /* Iterate over resources. */
+
+ if (!mfile->checksums)
+ {
+ logprintf (LOG_NOTQUIET, _("No checksums found.\n"));
+ retr_err = METALINK_CHKSUM_ERROR;
+ }
+
+ if (retr_err != RETROK)
+ {
+ logprintf (LOG_VERBOSE, _("Failed to download %s. Skipping resource.\n"),
+ quote (destname ? destname : safename));
+ }
+ else if (!size_ok)
+ {
+ retr_err = METALINK_SIZE_ERROR;
+ logprintf (LOG_NOTQUIET,
+ _("File %s retrieved but size does not match. "
+ "\n"), quote (destname));
+ }
+ else if (!hash_ok)
+ {
+ retr_err = METALINK_CHKSUM_ERROR;
+ logprintf (LOG_NOTQUIET,
+ _("File %s retrieved but checksum does not match. "
+ "\n"), quote (destname));
+ }
+#ifdef HAVE_GPGME
+ /* Signature will be only validated if hash check was successful. */
+ else if (sig_status < 0)
+ {
+ retr_err = METALINK_SIG_ERROR;
+ logprintf (LOG_NOTQUIET,
+ _("File %s retrieved but signature does not match. "
+ "\n"), quote (destname));
+ }
+#endif
+ last_retr_err = retr_err == RETROK ? last_retr_err : retr_err;
+
+ /* Rename the file if error encountered; remove if option specified.
+ Note: the file has been downloaded using *_loop. Therefore, it
+ is not necessary to keep the file for continuated download. */
+ if (((retr_err != RETROK && !opt.always_rest) || opt.delete_after)
+ && destname != NULL && file_exists_p (destname, NULL))
+ {
+ badhash_or_remove (destname);
+ }
+ if (output_stream)
+ {
+ fclose (output_stream);
+ output_stream = NULL;
+ }
+ xfree (destname);
+ xfree (filename);
+ xfree (trsrname);
+ xfree (planname);
+ } /* Iterate over files. */
+
+ /* Restore original values. */
+ opt.output_document = _output_document;
+ output_stream_regular = _output_stream_regular;
+ output_stream = _output_stream;
+
+ return last_retr_err;
+}
+
+/*
+ Replace/remove the basename of a file name.
+
+ The file name is permanently modified.
+
+ Always set NAME to a string, even an empty one.
+
+ Use REF's basename as replacement. If REF is NULL or if it doesn't
+ provide a valid basename candidate, then remove NAME's basename.
+*/
+void
+replace_metalink_basename (char **name, char *ref)
+{
+ int n;
+ char *p, *new, *basename;
+
+ if (!name)
+ return;
+
+ /* Strip old basename. */
+ if (*name)
+ {
+ basename = last_component (*name);
+
+ if (basename == *name)
+ xfree (*name);
+ else
+ *basename = '\0';
+ }
+
+ /* New basename from file name reference. */
+ if (ref)
+ ref = last_component (ref);
+
+ /* Replace the old basename. */
+ new = aprintf ("%s%s", *name ? *name : "", ref ? ref : "");
+ xfree (*name);
+ *name = new;
+
+ /* Remove prefix drive letters if required, i.e. when in w32
+ environments. */
+ p = new;
+ while (p[0] != '\0')
+ {
+ while ((n = FILE_SYSTEM_PREFIX_LEN (p)) > 0)
+ p += n;
+
+ if (p != new)
+ {
+ while (ISSLASH (p[0]))
+ ++p;
+ new = p;
+ continue;
+ }
+
+ break;
+ }
+
+ if (*name != new)
+ {
+ new = xstrdup (new);
+ xfree (*name);
+ *name = new;
+ }
+}
+
+/*
+ Strip the directory components from the given name.
+
+ Return a pointer to the end of the leading directory components.
+ Return NULL if the resulting name is unsafe or invalid.
+
+ Due to security issues posed by saving files with unsafe names, here
+ the use of libmetalink's metalink_check_safe_path() is enforced. If
+ this appears redundant because the given name was already verified,
+ just remember to never underestimate unsafe file names.
+*/
+char *
+get_metalink_basename (char *name)
+{
+ int n;
+ char *basename;
+
+ if (!name)
+ return NULL;
+
+ basename = last_component (name);
+
+ while ((n = FILE_SYSTEM_PREFIX_LEN (basename)) > 0)
+ basename += n;
+
+ return metalink_check_safe_path (basename) ? basename : NULL;
+}
+
+/*
+ Append a separator and a numeric suffix to a string.
+
+ The string is permanently modified.
+*/
+void
+append_suffix_number (char **str, const char *sep, wgint num)
+{
+ char *new, buf[24];
+
+ number_to_string (buf, num);
+ new = aprintf ("%s%s%s", *str ? *str : "", sep ? sep : "", buf);
+ xfree (*str);
+ *str = new;
+}
+
+/*
+ Remove the string's trailing/leading whitespaces and line breaks.
+
+ The string is permanently modified.
+*/
+void
+clean_metalink_string (char **str)
+{
+ int c;
+ size_t len;
+ char *new, *beg, *end;
+
+ if (!str || !*str)
+ return;
+
+ beg = *str;
+
+ while ((c = *beg) && (c == '\n' || c == '\r' || c == '\t' || c == ' '))
+ beg++;
+
+ end = beg;
+
+ /* To not truncate a string containing spaces, search the first '\r'
+ or '\n' which ipotetically marks the end of the string. */
+ while ((c = *end) && (c != '\r') && (c != '\n'))
+ end++;
+
+ /* If we are at the end of the string, search the first legit
+ character going backward. */
+ if (*end == '\0')
+ while ((c = *(end - 1)) && (c == '\n' || c == '\r' || c == '\t' || c == ' '))
+ end--;
+
+ len = end - beg;
+
+ new = xmemdup0 (beg, len);
+ xfree (*str);
+ *str = new;
+}
+
+/*
+ Remove the quotation surrounding a string.
+
+ The string is permanently modified.
+ */
+void
+dequote_metalink_string (char **str)
+{
+ char *new;
+ size_t str_len;
+
+ if (!str || !*str || ((*str)[0] != '\"' && (*str)[0] != '\''))
+ return;
+
+ str_len = strlen (*str); /* current string length */
+
+ /* Verify if the current string is surrounded by quotes. */
+ if (str_len < 2 || (*str)[0] != (*str)[str_len - 1])
+ return;
+
+ /* Dequoted string. */
+ new = xmemdup0 (*str + 1, str_len - 2);
+ xfree (*str);
+ *str = new;
+}
+
+/* Append the suffix ".badhash" to the file NAME, except without
+ overwriting an existing file with that name and suffix. */
+void
+badhash_suffix (char *name)
+{
+ char *bhash, *uname;
+
+ bhash = concat_strings (name, ".badhash", (char *)0);
+ uname = unique_name (bhash);
+
+ logprintf (LOG_VERBOSE, _("Renaming %s to %s.\n"),
+ quote_n (0, name), quote_n (1, uname));
+
+ if (link (name, uname))
+ logprintf (LOG_NOTQUIET, "link: %s\n", strerror (errno));
+ else if (unlink (name))
+ logprintf (LOG_NOTQUIET, "unlink: %s\n", strerror (errno));
+
+ xfree (bhash);
+ xfree (uname);
+}
+
+/* Append the suffix ".badhash" to the file NAME, except without
+ overwriting an existing file with that name and suffix.
+
+ Remove the file NAME if the option --delete-after is specified, or
+ if the option --keep-badhash isn't set. */
+void
+badhash_or_remove (char *name)
+{
+ if (opt.delete_after || !opt.keep_badhash)
+ {
+ logprintf (LOG_VERBOSE, _("Removing %s.\n"), quote (name));
+ if (unlink (name))
+ logprintf (LOG_NOTQUIET, "unlink: %s\n", strerror (errno));
+ }
+ else
+ {
+ badhash_suffix(name);
+ }
+}
+
+/*
+ Simple file fetch.
+
+ Set DESTNAME to the name of the saved file.
+
+ Resume previous download if RESUME is true. To disable
+ Metalink/HTTP, set METALINK_HTTP to false.
+*/
+uerr_t
+fetch_metalink_file (const char *url_str,
+ bool resume, bool metalink_http,
+ const char *filename, char **destname)
+{
+ FILE *_output_stream = output_stream;
+ bool _output_stream_regular = output_stream_regular;
+ char *_output_document = opt.output_document;
+ bool _metalink_http = opt.metalink_over_http;
+
+ char *local_file = NULL;
+
+ uerr_t retr_err = URLERROR;
+
+ struct iri *iri;
+ struct url *url;
+ int url_err;
+
+ /* Parse the URL. */
+ iri = iri_new ();
+ set_uri_encoding (iri, opt.locale, true);
+ url = url_parse (url_str, &url_err, iri, false);
+
+ if (!url)
+ {
+ char *error = url_error (url_str, url_err);
+ logprintf (LOG_NOTQUIET, "%s: %s.\n", url_str, error);
+ inform_exit_status (retr_err);
+ iri_free (iri);
+ xfree (error);
+ return retr_err;
+ }
+
+ output_stream = NULL;
+
+ if (resume)
+ /* continue previous download */
+ output_stream = fopen (filename, "ab");
+ else
+ /* create a file with an unique name */
+ output_stream = unique_create (filename, true, &local_file);
+
+ output_stream_regular = true;
+
+ /*
+ If output_stream is NULL, the file couldn't be created/opened.
+ This could be due to the impossibility to create a directory tree:
+ * stdio.h (fopen)
+ * src/utils.c (unique_create)
+
+ A call to retrieve_url() can indirectly create a directory tree,
+ when opt.output_document is set to the destination file name and
+ output_stream is left to NULL:
+ * src/http.c (open_output_stream): If output_stream is NULL,
+ create the destination opt.output_document "path/file"
+ */
+ if (!local_file)
+ local_file = xstrdup (filename);
+
+ /* Store the real file name for displaying in messages, and for
+ proper "path/file" handling. */
+ opt.output_document = local_file;
+
+ opt.metalink_over_http = metalink_http;
+
+ DEBUGP (("Storing to %s\n", local_file));
+ retr_err = retrieve_url (url, url_str, NULL, NULL,
+ NULL, NULL, opt.recursive, iri, false);
+
+ if (retr_err == RETROK)
+ {
+ if (destname)
+ *destname = local_file;
+ else
+ xfree (local_file);
+ }
+
+ if (output_stream)
+ {
+ fclose (output_stream);
+ output_stream = NULL;
+ }
+
+ opt.metalink_over_http = _metalink_http;
+ opt.output_document = _output_document;
+ output_stream_regular = _output_stream_regular;
+ output_stream = _output_stream;
+
+ inform_exit_status (retr_err);
+
+ iri_free (iri);
+ url_free (url);
+
+ return retr_err;
+}
+
+int metalink_res_cmp (const void* v1, const void* v2)
+{
+ const metalink_resource_t *res1 = *(metalink_resource_t **) v1,
+ *res2 = *(metalink_resource_t **) v2;
+ if (res1->preference != res2->preference)
+ return res2->preference - res1->preference;
+ if (res1->priority != res2->priority)
+ return res1->priority - res2->priority;
+ if (opt.preferred_location)
+ {
+ int cmp = 0;
+ if (res1->location &&
+ !c_strcasecmp (opt.preferred_location, res1->location))
+ cmp -= 1;
+ if (res2->location &&
+ !c_strcasecmp (opt.preferred_location, res2->location))
+ cmp += 1;
+ return cmp;
+ }
+ return 0;
+}
+
+int metalink_meta_cmp (const void* v1, const void* v2)
+{
+ const metalink_metaurl_t *meta1 = *(metalink_metaurl_t **) v1,
+ *meta2 = *(metalink_metaurl_t **) v2;
+ if (meta1->priority != meta2->priority)
+ return meta1->priority - meta2->priority;
+ return 0;
+}
+
+/*
+ Find value of given key. This is intended for Link header, but will
+ work with any header that uses ';' as field separator and '=' as key-value
+ separator.
+
+ Link = "Link" ":" #link-value
+ link-value = "<" URI-Reference ">" *( ";" link-param )
+ link-param = ( ( "rel" "=" relation-types )
+ | ( "anchor" "=" <"> URI-Reference <"> )
+ | ( "rev" "=" relation-types )
+ | ( "hreflang" "=" Language-Tag )
+ | ( "media" "=" ( MediaDesc | ( <"> MediaDesc <"> ) ) )
+ | ( "title" "=" quoted-string )
+ | ( "title*" "=" ext-value )
+ | ( "type" "=" ( media-type | quoted-mt ) )
+ | ( link-extension ) )
+ link-extension = ( parmname [ "=" ( ptoken | quoted-string ) ] )
+ | ( ext-name-star "=" ext-value )
+ ext-name-star = parmname "*" ; reserved for RFC2231-profiled
+ ; extensions. Whitespace NOT
+ ; allowed in between.
+ ptoken = 1*ptokenchar
+ ptokenchar = "!" | "#" | "$" | "%" | "&" | "'" | "("
+ | ")" | "*" | "+" | "-" | "." | "/" | DIGIT
+ | ":" | "<" | "=" | ">" | "?" | "@" | ALPHA
+ | "[" | "]" | "^" | "_" | "`" | "{" | "|"
+ | "}" | "~"
+ media-type = type-name "/" subtype-name
+ quoted-mt = <"> media-type <">
+ relation-types = relation-type
+ | <"> relation-type *( 1*SP relation-type ) <">
+ relation-type = reg-rel-type | ext-rel-type
+ reg-rel-type = LOALPHA *( LOALPHA | DIGIT | "." | "-" )
+ ext-rel-type = URI
+
+ See more: rfc5988
+*/
+bool
+find_key_value (const char *start, const char *end, const char *key, char **value)
+{
+ const char *eq;
+ size_t key_len = strlen (key);
+ const char *val_beg, *val_end;
+ const char *key_beg;
+
+ key_beg = start;
+
+ while (key_beg + key_len + 1 < end)
+ {
+ /* Skip whitespaces. */
+ while (key_beg + key_len + 1 < end && c_isspace (*key_beg))
+ key_beg++;
+ if (strncmp (key_beg, key, key_len))
+ {
+ /* Find next token. */
+ while (key_beg + key_len + 1 < end && *key_beg != ';')
+ key_beg++;
+ key_beg++;
+ continue;
+ }
+ else
+ {
+ /* Find equals sign. */
+ eq = key_beg + key_len;
+ while (eq < end && c_isspace (*eq))
+ eq++;
+ if (eq == end)
+ return false;
+ if (*eq != '=')
+ {
+ key_beg++;
+ continue;
+ }
+
+ val_beg = eq + 1;
+ while (val_beg < end && c_isspace (*val_beg))
+ val_beg++;
+ if (val_beg == end)
+ return false;
+ val_end = val_beg + 1;
+ while (val_end < end && *val_end != ';' && !c_isspace (*val_end))
+ val_end++;
+ *value = xstrndup (val_beg, val_end - val_beg);
+ dequote_metalink_string (value);
+ return true;
+ }
+ }
+ *value = NULL;
+ return false;
+}
+
+/* This is to check if given token exists in HTTP header. Tokens are
+ separated by ';'. */
+bool
+has_key (const char *start, const char *end, const char *key)
+{
+ const char *pos; /* Here would the token start. */
+ size_t key_len = strlen (key);
+
+ pos = start;
+ while (pos + key_len <= end)
+ {
+ /* Skip whitespaces at beginning. */
+ while (pos + key_len <= end && c_isspace (*pos))
+ pos++;
+
+ /* Does the prefix of pos match our key? */
+ if (strncmp (key, pos, key_len))
+ {
+ /* This was not a match.
+ Skip all characters until beginning of next token. */
+ while (pos + key_len <= end && *pos != ';')
+ pos++;
+ pos++;
+ continue;
+ }
+
+ /* key is prefix of pos. Is it the exact token or just a prefix? */
+ pos += key_len;
+ while (pos < end && c_isspace (*pos))
+ pos++;
+ if (pos == end || *pos == ';')
+ return true;
+
+ /* This was not a match (just a prefix).
+ Skip all characters until beginning of next token. */
+ while (pos + key_len <= end && *pos != ';')
+ pos++;
+ pos++;
+ }
+ return false;
+}
+
+/* Find all key=value pairs delimited with ';' or ','. This is intended for
+ Digest header parsing.
+ The usage is:
+
+ const char *pos;
+ for (pos = header_beg; pos = find_key_values (pos, header_end, &key, &val); pos++)
+ {
+ ...
+ }
+
+ */
+const char *
+find_key_values (const char *start, const char *end, char **key, char **value)
+{
+ const char *key_start, *key_end;
+ const char *eq;
+ const char *val_start, *val_end;
+
+ eq = start;
+ while (eq < end && *eq != '=')
+ {
+ /* Skip tokens without =value part. */
+ if (*eq == ';' || *eq == ',')
+ start = eq + 1;
+ eq++;
+ }
+
+ if (eq >= end)
+ return NULL;
+
+ key_start = start;
+ while (key_start < eq && c_isspace (*key_start))
+ key_start++;
+
+ key_end = eq - 1;
+ while (key_end > key_start && c_isspace (*key_end))
+ key_end--;
+ key_end++;
+
+ val_start = eq + 1;
+ while (val_start < end && c_isspace (*val_start))
+ val_start++;
+
+ val_end = val_start;
+
+ while (val_end < end && *val_end != ';' &&
+ *val_end != ',' && !c_isspace (*val_end))
+ val_end++;
+
+ *key = xstrndup (key_start, key_end - key_start);
+ *value = xstrndup (val_start, val_end - val_start);
+ dequote_metalink_string (value);
+
+ /* Skip trailing whitespaces. */
+ while (val_end < end && c_isspace (*val_end))
+ val_end++;
+
+ return val_end;
+}
+
+#ifdef TESTING
+const char *
+test_find_key_values (void)
+{
+ static const char *header_data = "key1=val1;key2=\"val2\" ;key3=val3; key4=val4"\
+ " ; key5=val5;key6 ='val6';key7= val7; "\
+ "key8 = val8 ; key9 = \"val9\" "\
+ " ,key10= 'val10',key11,key12=val12";
+ static const struct
+ {
+ const char *key;
+ const char *val;
+ } test_array[] =
+ {
+ { "key1", "val1" },
+ { "key2", "val2" },
+ { "key3", "val3" },
+ { "key4", "val4" },
+ { "key5", "val5" },
+ { "key6", "val6" },
+ { "key7", "val7" },
+ { "key8", "val8" },
+ { "key9", "val9" },
+ { "key10", "val10" },
+ { "key12", "val12" }
+ };
+ const char *pos;
+ char *key, *value;
+ size_t i = 0;
+
+ for (pos = header_data; (pos = find_key_values (pos,
+ header_data + strlen (header_data),
+ &key, &value)); pos++)
+ {
+ mu_assert ("test_find_key_values: wrong result",
+ !strcmp (test_array[i].val, value) &&
+ !strcmp (test_array[i].key, key));
+ xfree (key);
+ xfree (value);
+ i++;
+ }
+
+ return NULL;
+}
+
+const char *
+test_find_key_value (void)
+{
+ static const char *header_data = "key1=val1;key2=val2 ;key3='val3'; key4=val4"\
+ " ; key5='val5';key6 =val6;key7= \"val7\"; "\
+ "key8 = \"val8\" ; key9 = val9 ";
+ static const struct
+ {
+ const char *key;
+ const char *val;
+ bool result;
+ } test_array[] =
+ {
+ { "key1", "val1", true },
+ { "key2", "val2", true },
+ { "key3", "val3", true },
+ { "key4", "val4", true },
+ { "key5", "val5", true },
+ { "key6", "val6", true },
+ { "key7", "val7", true },
+ { "key8", "val8", true },
+ { "key9", "val9", true },
+ { "key10", NULL, false },
+ { "ey1", NULL, false },
+ { "dey1", NULL, false }
+ };
+ size_t i;
+
+ for (i=0; i < countof (test_array); ++i)
+ {
+ bool result;
+ char *value;
+
+ result = find_key_value (header_data,
+ header_data + strlen(header_data),
+ test_array[i].key, &value);
+
+ mu_assert ("test_find_key_value: wrong result",
+ result == test_array[i].result &&
+ ((!test_array[i].result && !value) ||
+ !strcmp (value, test_array[i].val)));
+
+ xfree (value);
+ }
+
+ return NULL;
+}
+
+const char *
+test_has_key (void)
+{
+ static const char *header_data = "key1=val2;token1;xyz; token2;xyz;token3 ;"\
+ "xyz; token4 ;xyz; token5 ";
+ struct
+ {
+ const char *token;
+ bool result;
+ } test_array[] =
+ {
+ { "key1=val2", true },
+ { "token1", true },
+ { "token2", true },
+ { "token3", true },
+ { "token4", true },
+ { "token5", true },
+ { "token6", false },
+ { "oken1", false },
+ { "poken1", false },
+ { "key1=val2", true }
+ };
+ size_t i;
+
+ for (i = 0; i < countof (test_array); ++i)
+ mu_assert ("test_has_key: wrong result",
+ has_key (header_data, header_data + strlen (header_data),
+ test_array[i].token) == test_array[i].result);
+
+ return NULL;
+}
+#endif
+
+#endif /* HAVE_METALINK */
diff --git a/src/metalink.h b/src/metalink.h
new file mode 100644
index 0000000..b20a421
--- /dev/null
+++ b/src/metalink.h
@@ -0,0 +1,75 @@
+/* Declarations for metalink.c.
+ Copyright (C) 2015, 2018-2020 Free Software Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+#if ! defined METALINK_H && defined HAVE_METALINK
+#define METALINK_H
+
+#include <metalink/metalink_types.h>
+#include "dirname.h"
+#include "wget.h"
+
+#ifdef HAVE_SSL
+# define RES_TYPE_SUPPORTED(x)\
+ ((!x) || !strcmp (x, "http") || !strcmp (x, "https") || !strcmp (x, "ftp") || !strcmp (x, "ftps"))
+#else
+# define RES_TYPE_SUPPORTED(x)\
+ ((!x) || !strcmp (x, "ftp") || !strcmp (x, "http"))
+#endif
+
+#define DEFAULT_PRI 999999
+#define VALID_PRI_RANGE(x) ((x) > 0 && (x) < 1000000)
+
+uerr_t retrieve_from_metalink (const metalink_t *metalink);
+
+int metalink_res_cmp (const void *res1, const void *res2);
+int metalink_meta_cmp (const void* meta1, const void* meta2);
+
+int metalink_check_safe_path (const char *path);
+
+void replace_metalink_basename (char **name, char *ref);
+char *get_metalink_basename (char *name);
+void append_suffix_number (char **str, const char *sep, wgint num);
+void clean_metalink_string (char **str);
+void dequote_metalink_string (char **str);
+void badhash_suffix (char *name);
+void badhash_or_remove (char *name);
+uerr_t fetch_metalink_file (const char *url_str,
+ bool resume, bool metalink_http,
+ const char *filename, char **destname);
+
+bool find_key_value (const char *start,
+ const char *end,
+ const char *key,
+ char **value);
+bool has_key (const char *start, const char *end, const char *key);
+const char *find_key_values (const char *start,
+ const char *end,
+ char **key,
+ char **value);
+
+#endif /* METALINK_H */
diff --git a/src/mswindows.c b/src/mswindows.c
new file mode 100644
index 0000000..42d9f5f
--- /dev/null
+++ b/src/mswindows.c
@@ -0,0 +1,652 @@
+/* mswindows.c -- Windows-specific support
+ Copyright (C) 1996-2011, 2014-2015, 2018-2020 Free Software
+ Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#define INHIBIT_WRAP /* avoid wrapping of socket, bind, ... */
+
+#include "wget.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <math.h>
+
+
+#include "utils.h"
+#include "url.h"
+#include "exits.h"
+
+#ifndef ES_SYSTEM_REQUIRED
+#define ES_SYSTEM_REQUIRED 0x00000001
+#endif
+
+#ifndef ES_CONTINUOUS
+#define ES_CONTINUOUS 0x80000000
+#endif
+
+
+/* Windows version of xsleep in utils.c. */
+
+void
+xsleep (double seconds)
+{
+#if defined(HAVE_USLEEP) && defined(HAVE_SLEEP)
+ if (seconds >= 1)
+ {
+ /* Explained in utils.c. */
+ sleep (seconds);
+ seconds -= (long) seconds;
+ }
+ usleep (seconds * 1000000);
+#else /* not HAVE_USLEEP */
+ SleepEx ((DWORD) (seconds * 1000 + .5), FALSE);
+#endif /* not HAVE_USLEEP */
+}
+
+void
+windows_main (char **exec_name)
+{
+ char *p;
+
+ /* Remove .EXE from filename if it has one. */
+ *exec_name = xstrdup (*exec_name);
+ p = strrchr (*exec_name, '.');
+ if (p)
+ *p = '\0';
+}
+
+static void
+ws_cleanup (void)
+{
+ xfree (exec_name);
+ WSACleanup ();
+}
+
+#if defined(CTRLBREAK_BACKGND) || defined(CTRLC_BACKGND)
+static void
+ws_hangup (const char *reason)
+{
+ fprintf (stderr, _("Continuing in background.\n"));
+ redirect_output (true, reason);
+
+ /* Detach process from the current console. Under Windows 9x, if we
+ were launched from a 16-bit process (which is usually the case;
+ command.com is 16-bit) the parent process should resume right away.
+ Under NT or if launched from a 32-process under 9x, this is a futile
+ gesture as the parent will wait for us to terminate before resuming. */
+ FreeConsole ();
+}
+#endif
+
+/* Construct the name for a named section (a.k.a. `file mapping') object.
+ The returned string is dynamically allocated and needs to be xfree()'d. */
+static char *
+make_section_name (DWORD pid)
+{
+ return aprintf ("gnu_wget_fake_fork_%lu", pid);
+}
+
+/* This structure is used to hold all the data that is exchanged between
+ parent and child. */
+struct fake_fork_info
+{
+ HANDLE event;
+ bool logfile_changed;
+ char lfilename[MAX_PATH + 1];
+};
+
+/* Determines if we are the child and if so performs the child logic.
+ Return values:
+ < 0 error
+ 0 parent
+ > 0 child
+*/
+static int
+fake_fork_child (void)
+{
+ HANDLE section, event;
+ struct fake_fork_info *info;
+ char *name;
+
+ name = make_section_name (GetCurrentProcessId ());
+ section = OpenFileMapping (FILE_MAP_WRITE, FALSE, name);
+ xfree (name);
+ /* It seems that Windows 9x and NT set last-error inconsistently when
+ OpenFileMapping() fails; so we assume it failed because the section
+ object does not exist. */
+ if (!section)
+ return 0; /* We are the parent. */
+
+ info = MapViewOfFile (section, FILE_MAP_WRITE, 0, 0, 0);
+ if (!info)
+ {
+ CloseHandle (section);
+ return -1;
+ }
+
+ event = info->event;
+
+ info->logfile_changed = false;
+ if (!opt.lfilename && (!opt.quiet || opt.server_response))
+ {
+ /* See utils:fork_to_background for explanation. */
+ FILE *new_log_fp = unique_create (DEFAULT_LOGFILE, false, &opt.lfilename);
+ if (new_log_fp)
+ {
+ info->logfile_changed = true;
+ snprintf (info->lfilename, sizeof (info->lfilename), "%s",
+ opt.lfilename);
+ fclose (new_log_fp);
+ }
+ }
+
+ UnmapViewOfFile (info);
+ CloseHandle (section);
+
+ /* Inform the parent that we've done our part. */
+ if (!SetEvent (event))
+ return -1;
+
+ CloseHandle (event);
+ return 1; /* We are the child. */
+}
+
+/* Windows doesn't support the fork() call; so we fake it by invoking
+ another copy of Wget with the same arguments with which we were
+ invoked. The child copy of Wget should perform the same initialization
+ sequence as the parent; so we should have two processes that are
+ essentially identical. We create a specially named section object that
+ allows the child to distinguish itself from the parent and is used to
+ exchange information between the two processes. We use an event object
+ for synchronization. */
+static void
+fake_fork (void)
+{
+ char exe[MAX_PATH + 1];
+ DWORD exe_len, le;
+ SECURITY_ATTRIBUTES sa;
+ HANDLE section, event, h[2];
+ STARTUPINFO si;
+ PROCESS_INFORMATION pi;
+ struct fake_fork_info *info;
+ char *name;
+ BOOL rv;
+
+ section = pi.hProcess = pi.hThread = NULL;
+
+ /* Get the fully qualified name of our executable. This is more reliable
+ than using argv[0]. */
+ exe_len = GetModuleFileName (GetModuleHandle (NULL), exe, sizeof (exe));
+ if (!exe_len || (exe_len >= sizeof (exe)))
+ return;
+
+ sa.nLength = sizeof (sa);
+ sa.lpSecurityDescriptor = NULL;
+ sa.bInheritHandle = TRUE;
+
+ /* Create an anonymous inheritable event object that starts out
+ non-signaled. */
+ event = CreateEvent (&sa, FALSE, FALSE, NULL);
+ if (!event)
+ return;
+
+ /* Create the child process detached form the current console and in a
+ suspended state. */
+ xzero (si);
+ si.cb = sizeof (si);
+ rv = CreateProcess (exe, GetCommandLine (), NULL, NULL, TRUE,
+ CREATE_SUSPENDED | DETACHED_PROCESS,
+ NULL, NULL, &si, &pi);
+ if (!rv)
+ goto cleanup;
+
+ /* Create a named section object with a name based on the process id of
+ the child. */
+ name = make_section_name (pi.dwProcessId);
+ section =
+ CreateFileMapping (INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0,
+ sizeof (struct fake_fork_info), name);
+ le = GetLastError();
+ xfree (name);
+ /* Fail if the section object already exists (should not happen). */
+ if (!section || (le == ERROR_ALREADY_EXISTS))
+ {
+ rv = FALSE;
+ goto cleanup;
+ }
+
+ /* Copy the event handle into the section object. */
+ info = MapViewOfFile (section, FILE_MAP_WRITE, 0, 0, 0);
+ if (!info)
+ {
+ rv = FALSE;
+ goto cleanup;
+ }
+
+ info->event = event;
+
+ UnmapViewOfFile (info);
+
+ /* Start the child process. */
+ rv = ResumeThread (pi.hThread);
+ if (!rv)
+ {
+ TerminateProcess (pi.hProcess, (DWORD) -1);
+ goto cleanup;
+ }
+
+ /* Wait for the child to signal to us that it has done its part. If it
+ terminates before signaling us it's an error. */
+
+ h[0] = event;
+ h[1] = pi.hProcess;
+ rv = WAIT_OBJECT_0 == WaitForMultipleObjects (2, h, FALSE, 5 * 60 * 1000);
+ if (!rv)
+ goto cleanup;
+
+ info = MapViewOfFile (section, FILE_MAP_READ, 0, 0, 0);
+ if (!info)
+ {
+ rv = FALSE;
+ goto cleanup;
+ }
+
+ /* Ensure string is properly terminated. */
+ if (info->logfile_changed &&
+ !memchr (info->lfilename, '\0', sizeof (info->lfilename)))
+ {
+ rv = FALSE;
+ goto cleanup;
+ }
+
+ printf (_("Continuing in background, pid %lu.\n"), pi.dwProcessId);
+ if (info->logfile_changed)
+ printf (_("Output will be written to %s.\n"), quote (info->lfilename));
+
+ UnmapViewOfFile (info);
+
+cleanup:
+
+ if (event)
+ CloseHandle (event);
+ if (section)
+ CloseHandle (section);
+ if (pi.hThread)
+ CloseHandle (pi.hThread);
+ if (pi.hProcess)
+ CloseHandle (pi.hProcess);
+
+ /* We're the parent. If all is well, terminate. */
+ if (rv)
+ exit (WGET_EXIT_SUCCESS);
+
+ /* We failed, return. */
+}
+
+/* This is the corresponding Windows implementation of the
+ fork_to_background() function in utils.c. */
+bool
+fork_to_background (void)
+{
+ int rv;
+
+ rv = fake_fork_child ();
+ if (rv < 0)
+ {
+ fprintf (stderr, _("fake_fork_child() failed\n"));
+ abort ();
+ }
+ else if (rv == 0)
+ {
+ /* We're the parent. */
+ fake_fork ();
+ /* If fake_fork() returns, it failed. */
+ fprintf (stderr, _("fake_fork() failed\n"));
+ abort ();
+ }
+ /* If we get here, we're the child. */
+ return false;
+}
+
+static BOOL WINAPI
+ws_handler (DWORD dwEvent)
+{
+ switch (dwEvent)
+ {
+#ifdef CTRLC_BACKGND
+ case CTRL_C_EVENT:
+ ws_hangup ("CTRL+C");
+ return TRUE;
+#endif
+#ifdef CTRLBREAK_BACKGND
+ case CTRL_BREAK_EVENT:
+ ws_hangup ("CTRL+Break");
+ return TRUE;
+#endif
+ default:
+ return FALSE;
+ }
+}
+
+static char *title_buf = NULL;
+static char *curr_url = NULL;
+static int old_percentage = -1;
+
+/* Updates the console title with the URL of the current file being
+ transferred. */
+void
+ws_changetitle (const char *url)
+{
+ xfree (title_buf);
+ xfree (curr_url);
+ title_buf = xmalloc (strlen (url) + 20);
+ curr_url = xstrdup (url);
+ old_percentage = -1;
+ sprintf (title_buf, "Wget %s", curr_url);
+ SetConsoleTitle (title_buf);
+}
+
+/* Updates the console title with the percentage of the current file
+ transferred. */
+void
+ws_percenttitle (double percentage_float)
+{
+ int percentage;
+
+ if (!title_buf || !curr_url)
+ return;
+
+ percentage = (int) percentage_float;
+
+ /* Clamp percentage value. */
+ if (percentage < 0)
+ percentage = 0;
+ if (percentage > 100)
+ percentage = 100;
+
+ /* Only update the title when the percentage has changed. */
+ if (percentage == old_percentage)
+ return;
+
+ old_percentage = percentage;
+
+ sprintf (title_buf, "Wget [%d%%] %s", percentage, curr_url);
+ SetConsoleTitle (title_buf);
+}
+
+/* Returns a pointer to the fully qualified name of the directory that
+ contains the Wget binary (wget.exe). The returned path does not have a
+ trailing path separator. Returns NULL on failure. */
+char *
+ws_mypath (void)
+{
+ static char *wspathsave = NULL;
+
+ if (!wspathsave)
+ {
+ char buf[MAX_PATH + 1];
+ char *p;
+ DWORD len;
+
+ len = GetModuleFileName (GetModuleHandle (NULL), buf, sizeof (buf));
+ if (!len || (len >= sizeof (buf)))
+ return NULL;
+
+ p = strrchr (buf, PATH_SEPARATOR);
+ if (!p)
+ return NULL;
+
+ *p = '\0';
+ wspathsave = xstrdup (buf);
+ }
+
+ return wspathsave;
+}
+
+/* Prevent Windows entering sleep/hibernation-mode while Wget is doing
+ a lengthy transfer. Windows does not, by default, consider network
+ activity in console-programs as activity! Works on Win-98/ME/2K
+ and up. */
+static void
+set_sleep_mode (void)
+{
+ typedef DWORD (WINAPI *func_t) (DWORD);
+ func_t set_exec_state;
+
+ set_exec_state =
+ (func_t) GetProcAddress (GetModuleHandle ("KERNEL32.DLL"),
+ "SetThreadExecutionState");
+
+ if (set_exec_state)
+ set_exec_state (ES_SYSTEM_REQUIRED | ES_CONTINUOUS);
+}
+
+/* Perform Windows specific initialization. */
+void
+ws_startup (void)
+{
+ WSADATA data;
+ WORD requested = MAKEWORD (1, 1);
+ int err = WSAStartup (requested, &data);
+ if (err != 0)
+ {
+ fprintf (stderr, _("%s: Couldn't find usable socket driver.\n"),
+ exec_name);
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+
+ if (data.wVersion < requested)
+ {
+ fprintf (stderr, _("%s: Couldn't find usable socket driver.\n"),
+ exec_name);
+ WSACleanup ();
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+
+ atexit (ws_cleanup);
+ set_sleep_mode ();
+ SetConsoleCtrlHandler (ws_handler, TRUE);
+}
+
+/* run_with_timeout Windows implementation. */
+
+/* Stack size 0 uses default thread stack-size (reserve+commit).
+ Determined by what's in the PE header. */
+#define THREAD_STACK_SIZE 0
+
+struct thread_data
+{
+ void (*fun) (void *);
+ void *arg;
+ DWORD ws_error;
+};
+
+/* The callback that runs FUN(ARG) in a separate thread. This
+ function exists for two reasons: a) to not require FUN to be
+ declared WINAPI/__stdcall[1], and b) to retrieve Winsock errors,
+ which are per-thread. The latter is useful when FUN calls Winsock
+ functions, which is how run_with_timeout is used in Wget.
+
+ [1] MSVC can use __fastcall globally (cl /Gr) and on Watcom this is
+ the default (wcc386 -3r). */
+
+static DWORD WINAPI
+thread_helper (void *arg)
+{
+ struct thread_data *td = (struct thread_data *) arg;
+
+ /* Initialize Winsock error to what it was in the parent. That way
+ the subsequent call to WSAGetLastError will return the same value
+ if td->fun doesn't change Winsock error state. */
+ WSASetLastError (td->ws_error);
+
+ td->fun (td->arg);
+
+ /* Return Winsock error to the caller, in case FUN ran Winsock
+ code. */
+ td->ws_error = WSAGetLastError ();
+ return 0;
+}
+
+/* Call FUN(ARG), but don't allow it to run for more than TIMEOUT
+ seconds. Returns true if the function was interrupted with a
+ timeout, false otherwise.
+
+ This works by running FUN in a separate thread and terminating the
+ thread if it doesn't finish in the specified time. */
+
+bool
+run_with_timeout (double seconds, void (*fun) (void *), void *arg)
+{
+ HANDLE thread_hnd;
+ struct thread_data thread_arg;
+ DWORD thread_id;
+ bool rc;
+
+ DEBUGP (("seconds %.2f, ", seconds));
+
+ if (seconds == 0)
+ {
+ blocking_fallback:
+ fun (arg);
+ return false;
+ }
+
+ thread_arg.fun = fun;
+ thread_arg.arg = arg;
+ thread_arg.ws_error = WSAGetLastError ();
+ thread_hnd = CreateThread (NULL, THREAD_STACK_SIZE, thread_helper,
+ &thread_arg, 0, &thread_id);
+ if (!thread_hnd)
+ {
+ DEBUGP (("CreateThread() failed; [%#lx]\n",
+ (unsigned long) GetLastError ()));
+ goto blocking_fallback;
+ }
+
+ if (WaitForSingleObject (thread_hnd, (DWORD)(1000 * seconds))
+ == WAIT_OBJECT_0)
+ {
+ /* Propagate error state (which is per-thread) to this thread,
+ so the caller can inspect it. */
+ WSASetLastError (thread_arg.ws_error);
+ DEBUGP (("Winsock error: %d\n", WSAGetLastError ()));
+ rc = false;
+ }
+ else
+ {
+ TerminateThread (thread_hnd, 1);
+ rc = true;
+ }
+
+ CloseHandle (thread_hnd); /* Clear-up after TerminateThread(). */
+ thread_hnd = NULL;
+ return rc;
+}
+
+
+#ifdef ENABLE_IPV6
+/* An inet_ntop implementation that uses WSAAddressToString.
+ Prototype complies with POSIX 1003.1-2004. This is only used under
+ IPv6 because Wget prints IPv4 addresses using inet_ntoa. */
+
+const char *
+inet_ntop (int af, const void *src, char *dst, socklen_t cnt)
+{
+ /* struct sockaddr can't accommodate struct sockaddr_in6. */
+ union {
+ struct sockaddr_in6 sin6;
+ struct sockaddr_in sin;
+ } sa;
+ DWORD dstlen = cnt;
+ size_t srcsize;
+
+ xzero (sa);
+ switch (af)
+ {
+ case AF_INET:
+ sa.sin.sin_family = AF_INET;
+ sa.sin.sin_addr = *(struct in_addr *) src;
+ srcsize = sizeof (sa.sin);
+ break;
+ case AF_INET6:
+ sa.sin6.sin6_family = AF_INET6;
+ sa.sin6.sin6_addr = *(struct in6_addr *) src;
+ srcsize = sizeof (sa.sin6);
+ break;
+ default:
+ abort ();
+ }
+
+ if (WSAAddressToString ((struct sockaddr *) &sa, srcsize, NULL, dst, &dstlen) != 0)
+ {
+ errno = WSAGetLastError();
+ return NULL;
+ }
+ return (const char *) dst;
+}
+#endif
+
+
+void
+set_windows_fd_as_blocking_socket (int fd)
+{
+ /* 04/2011
+ gnulib select() converts blocking sockets to nonblocking in windows
+ discussed here:
+ http://old.nabble.com/blocking-socket-is-nonblocking-after-calling-gnulib-
+ select%28%29-in-windows-td31432857.html
+
+ wget uses blocking sockets so we must convert them back to blocking.
+ */
+ int ret = 0;
+ int wsagle = 0;
+ const int zero = 0;
+
+ do
+ {
+ if(wsagle == WSAEINPROGRESS)
+ Sleep(1); /* use windows sleep */
+
+ WSASetLastError (0);
+ ret = ioctl (fd, FIONBIO, &zero);
+ wsagle = WSAGetLastError ();
+ }
+ while (ret && (wsagle == WSAEINPROGRESS));
+
+ if(ret)
+ {
+ fprintf (stderr,
+ _("ioctl() failed. The socket could not be set as blocking.\n") );
+ DEBUGP (("Winsock error: %d\n", WSAGetLastError ()));
+ abort ();
+ }
+ return;
+}
diff --git a/src/mswindows.h b/src/mswindows.h
new file mode 100644
index 0000000..a8f9ba0
--- /dev/null
+++ b/src/mswindows.h
@@ -0,0 +1,78 @@
+/* Declarations for windows
+ Copyright (C) 1996-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef MSWINDOWS_H
+#define MSWINDOWS_H
+
+#ifndef WGET_H
+# error This file should not be included directly.
+#endif
+
+/* Prevent inclusion of <winsock*.h> in <windows.h>. */
+#ifndef WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+#endif
+
+#include <windows.h>
+
+#include <winsock2.h>
+#include <ws2tcpip.h>
+
+#ifndef EAI_SYSTEM
+# define EAI_SYSTEM -1 /* value doesn't matter */
+#endif
+
+/* Declares file access functions, such as open, create, access, and
+ chmod. Unix declares these in unistd.h and fcntl.h. */
+#include <io.h>
+
+/* Declares getpid(). */
+#include <process.h>
+
+/* Declares inet_ntop() and inet_pton(). */
+#include <arpa/inet.h>
+
+#include <stdio.h>
+
+#define PATH_SEPARATOR '\\'
+
+/* ioctl needed by set_windows_fd_as_blocking_socket() */
+#include <sys/ioctl.h>
+
+/* Public functions. */
+
+void ws_startup (void);
+void ws_changetitle (const char *);
+void ws_percenttitle (double);
+char *ws_mypath (void);
+void windows_main (char **);
+void set_windows_fd_as_blocking_socket (int);
+
+#endif /* MSWINDOWS_H */
diff --git a/src/netrc.c b/src/netrc.c
new file mode 100644
index 0000000..a9232ed
--- /dev/null
+++ b/src/netrc.c
@@ -0,0 +1,569 @@
+/* Read and parse the .netrc file to get hosts, accounts, and passwords.
+ Copyright (C) 1996, 2007-2011, 2015, 2018-2020 Free Software
+ Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+/* This file used to be kept in synch with the code in Fetchmail, but
+ the latter has diverged since. */
+
+#include "wget.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#include "utils.h"
+#include "netrc.h"
+#include "init.h"
+
+#ifdef WINDOWS
+# define NETRC_FILE_NAME "_netrc"
+#else
+# define NETRC_FILE_NAME ".netrc"
+#endif
+
+typedef struct _acc_t
+{
+ char *host; /* NULL if this is the default machine
+ entry. */
+ char *acc;
+ char *passwd; /* NULL if there is no password. */
+ struct _acc_t *next;
+} acc_t;
+
+static acc_t *parse_netrc (const char *);
+static acc_t *parse_netrc_fp (const char *, FILE *);
+
+static acc_t *netrc_list;
+static int processed_netrc;
+
+#if defined DEBUG_MALLOC || defined TESTING
+static void free_netrc(acc_t *);
+
+void
+netrc_cleanup (void)
+{
+ free_netrc (netrc_list);
+ processed_netrc = 0;
+}
+#endif
+
+/* Return the correct user and password, given the host, user (as
+ given in the URL), and password (as given in the URL). May return
+ NULL.
+
+ If SLACK_DEFAULT is set, allow looking for a "default" account.
+ You will typically turn it off for HTTP. */
+void
+search_netrc (const char *host, const char **acc, const char **passwd,
+ int slack_default, FILE *fp_netrc)
+{
+ acc_t *l;
+
+ if (!opt.netrc)
+ return;
+ /* Find ~/.netrc. */
+ if (!processed_netrc)
+ {
+#ifdef __VMS
+
+ int err;
+ struct stat buf;
+ char *path = "SYS$LOGIN:.netrc";
+
+ netrc_list = NULL;
+ processed_netrc = 1;
+
+ err = stat (path, &buf);
+ if (err == 0)
+ netrc_list = parse_netrc (path);
+
+#else /* def __VMS */
+
+ netrc_list = NULL;
+ processed_netrc = 1;
+
+ if (fp_netrc)
+ netrc_list = parse_netrc_fp (".netrc", fp_netrc);
+ else if (opt.homedir)
+ {
+ struct stat buf;
+ char *path = aprintf ("%s/%s", opt.homedir, NETRC_FILE_NAME);
+ if (stat (path, &buf) == 0)
+ netrc_list = parse_netrc (path);
+ xfree (path);
+ }
+
+#endif /* def __VMS [else] */
+ }
+ /* If nothing to do... */
+ if (!netrc_list)
+ return;
+ /* Acc and password found; all OK. */
+ if (*acc && *passwd)
+ return;
+ /* Some data not given -- try finding the host. */
+ for (l = netrc_list; l; l = l->next)
+ {
+ if (!l->host)
+ continue;
+ else if (!strcasecmp (l->host, host))
+ break;
+ }
+ if (l)
+ {
+ if (*acc)
+ {
+ /* Looking for password in .netrc. */
+ if (!strcmp (l->acc, *acc))
+ *passwd = l->passwd; /* usernames match; password OK */
+ else
+ *passwd = NULL; /* usernames don't match */
+ }
+ else /* NOT *acc */
+ {
+ /* If password was given, use it. The account is l->acc. */
+ *acc = l->acc;
+ if (l->passwd)
+ *passwd = l->passwd;
+ }
+ return;
+ }
+ else
+ {
+ if (!slack_default)
+ return;
+ if (*acc)
+ return;
+ /* Try looking for the default account. */
+ for (l = netrc_list; l; l = l->next)
+ if (!l->host)
+ break;
+ if (!l)
+ return;
+ *acc = l->acc;
+ if (!*passwd)
+ *passwd = l->passwd;
+ return;
+ }
+}
+
+
+#ifdef STANDALONE
+
+/* Normally, these functions would be defined by your package. */
+# define xmalloc malloc
+# define xfree(p) do { free ((void *) (p)); p = NULL; } while (0)
+# define xstrdup strdup
+
+# define xrealloc realloc
+
+#endif /* STANDALONE */
+
+/* Maybe add NEWENTRY to the account information list, LIST. NEWENTRY is
+ set to a ready-to-use acc_t, in any event. */
+static void
+maybe_add_to_list (acc_t **newentry, acc_t **list)
+{
+ acc_t *a, *l;
+ a = *newentry;
+ l = *list;
+
+ /* We need an account name in order to add the entry to the list. */
+ if (a && ! a->acc)
+ {
+ /* Free any allocated space. */
+ xfree (a->host);
+ xfree (a->acc);
+ xfree (a->passwd);
+ }
+ else
+ {
+ if (a)
+ {
+ /* Add the current machine into our list. */
+ a->next = l;
+ l = a;
+ }
+
+ /* Allocate a new acc_t structure. */
+ a = xmalloc (sizeof (acc_t));
+ }
+
+ /* Zero the structure, so that it is ready to use. */
+ memset (a, 0, sizeof(*a));
+
+ /* Return the new pointers. */
+ *newentry = a;
+ *list = l;
+ return;
+}
+
+/* Helper function for the parser, shifts contents of
+ null-terminated string once character to the left.
+ Used in processing \ and " constructs in the netrc file */
+static void
+shift_left(char *string)
+{
+ char *p;
+
+ for (p=string; *p; ++p)
+ *p = *(p+1);
+}
+
+/* Parse a .netrc file (as described in the ftp(1) manual page). */
+static acc_t *
+parse_netrc_fp (const char *path, FILE *fp)
+{
+ char *line = NULL, *p, *tok;
+ const char *premature_token = NULL;
+ acc_t *current = NULL, *retval = NULL;
+ int ln = 0, qmark;
+ size_t bufsize = 0;
+
+ /* The latest token we've seen in the file. */
+ enum
+ {
+ tok_nothing, tok_account, tok_login, tok_macdef, tok_machine, tok_password, tok_port, tok_force
+ } last_token = tok_nothing;
+
+ /* While there are lines in the file... */
+ while (getline (&line, &bufsize, fp) > 0)
+ {
+ ln ++;
+
+ /* Parse the line. */
+ p = line;
+ qmark = 0;
+
+ /* Skip leading whitespace. */
+ while (*p && c_isspace (*p))
+ p ++;
+
+ /* If the line is empty, then end any macro definition. */
+ if (last_token == tok_macdef && !*p)
+ /* End of macro if the line is empty. */
+ last_token = tok_nothing;
+
+ /* If we are defining macros, then skip parsing the line. */
+ while (*p && last_token != tok_macdef)
+ {
+ /* Skip any whitespace. */
+ while (*p && c_isspace (*p))
+ p ++;
+
+ /* Discard end-of-line comments; also, stop processing if
+ the above `while' merely skipped trailing whitespace. */
+ if (*p == '#' || !*p)
+ break;
+
+ /* If the token starts with quotation mark, note this fact,
+ and squash the quotation character */
+ if (*p == '"'){
+ qmark = 1;
+ shift_left (p);
+ }
+
+ tok = p;
+
+ /* Find the end of the token, handling quotes and escapes. */
+ while (*p && (qmark ? *p != '"' : !c_isspace (*p))){
+ if (*p == '\\')
+ shift_left (p);
+ p ++;
+ }
+
+ /* If field was quoted, squash the trailing quotation mark
+ and reset qmark flag. */
+ if (qmark)
+ {
+ shift_left (p);
+ qmark = 0;
+ }
+
+ /* Null-terminate the token, if it isn't already. */
+ if (*p)
+ *p ++ = '\0';
+
+ switch (last_token)
+ {
+ case tok_login:
+ if (current)
+ {
+ xfree (current->acc);
+ current->acc = xstrdup (tok);
+ }
+ else
+ premature_token = "login";
+ break;
+
+ case tok_machine:
+ /* Start a new machine entry. */
+ maybe_add_to_list (&current, &retval);
+ current->host = xstrdup (tok);
+ break;
+
+ case tok_password:
+ if (current)
+ {
+ xfree (current->passwd);
+ current->passwd = xstrdup (tok);
+ }
+ else
+ premature_token = "password";
+ break;
+
+ /* We handle most of tok_macdef above. */
+ case tok_macdef:
+ if (!current)
+ premature_token = "macdef";
+ break;
+
+ /* We don't handle the account keyword at all. */
+ case tok_account:
+ if (!current)
+ premature_token = "account";
+ break;
+
+ /* We don't handle the port keyword at all. */
+ case tok_port:
+ if (!current)
+ premature_token = "port";
+ break;
+
+ /* We don't handle the force keyword at all. */
+ case tok_force:
+ if (!current)
+ premature_token = "force";
+ break;
+
+ /* We handle tok_nothing below this switch. */
+ case tok_nothing:
+ break;
+ }
+
+ if (premature_token)
+ {
+ fprintf (stderr, _("\
+%s: %s:%d: warning: %s token appears before any machine name\n"),
+ exec_name, path, ln, quote (premature_token));
+ premature_token = NULL;
+ }
+
+ if (last_token != tok_nothing)
+ /* We got a value, so reset the token state. */
+ last_token = tok_nothing;
+ else
+ {
+ /* Fetch the next token. */
+ if (!strcmp (tok, "account"))
+ last_token = tok_account;
+
+ else if (!strcmp (tok, "default"))
+ maybe_add_to_list (&current, &retval);
+
+ else if (!strcmp (tok, "login"))
+ last_token = tok_login;
+
+ else if (!strcmp (tok, "macdef"))
+ last_token = tok_macdef;
+
+ else if (!strcmp (tok, "machine"))
+ last_token = tok_machine;
+
+ else if (!strcmp (tok, "password"))
+ last_token = tok_password;
+
+ /* GNU extensions 'port' and 'force', not operational
+ * see https://www.gnu.org/software/emacs/manual/html_node/gnus/NNTP.html#index-nntp_002dauthinfo_002dfunction-2003
+ * see https://savannah.gnu.org/bugs/index.php?52066
+ */
+ else if (!strcmp (tok, "port"))
+ last_token = tok_port;
+
+ else if (!strcmp (tok, "force"))
+ last_token = tok_force;
+
+ else
+ fprintf (stderr, _("%s: %s:%d: unknown token \"%s\"\n"),
+ exec_name, path, ln, tok);
+ }
+ }
+ }
+
+ xfree (line);
+
+ /* Finalize the last machine entry we found. */
+ maybe_add_to_list (&current, &retval);
+ xfree (current);
+
+ /* Reverse the order of the list so that it appears in file order. */
+ current = retval;
+ retval = NULL;
+ while (current)
+ {
+ acc_t *saved_reference;
+
+ /* Change the direction of the pointers. */
+ saved_reference = current->next;
+ current->next = retval;
+
+ /* Advance to the next node. */
+ retval = current;
+ current = saved_reference;
+ }
+
+ return retval;
+}
+
+static acc_t *
+parse_netrc (const char *path)
+{
+ FILE *fp;
+ acc_t *acc;
+
+ fp = fopen (path, "r");
+ if (!fp)
+ {
+ fprintf (stderr, _("%s: Cannot read %s (%s).\n"), exec_name,
+ path, strerror (errno));
+ return NULL;
+ }
+
+ acc = parse_netrc_fp (path, fp);
+ fclose(fp);
+
+ return acc;
+}
+
+#if defined DEBUG_MALLOC || defined TESTING
+/* Free a netrc list. */
+static void
+free_netrc(acc_t *l)
+{
+ acc_t *t;
+
+ while (l)
+ {
+ t = l->next;
+ xfree (l->acc);
+ xfree (l->passwd);
+ xfree (l->host);
+ xfree (l);
+ l = t;
+ }
+}
+#endif
+
+#ifdef STANDALONE
+#include <sys/types.h>
+#include <sys/stat.h>
+#include "exits.h"
+
+const char *program_argstring = NULL; /* Needed by warc.c */
+
+int
+main (int argc, char **argv)
+{
+ struct stat sb;
+ char *program_name, *file, *target;
+ acc_t *head, *a;
+
+ if (argc < 2 || argc > 3)
+ {
+ fprintf (stderr, _("Usage: %s NETRC [HOSTNAME]\n"), argv[0]);
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+
+ program_name = argv[0];
+ file = argv[1];
+ target = argv[2];
+
+#ifdef ENABLE_NLS
+ /* Set the current locale. */
+ setlocale (LC_ALL, "");
+ /* Set the text message domain. */
+ bindtextdomain ("wget", LOCALEDIR);
+ textdomain ("wget");
+#endif /* ENABLE_NLS */
+
+ if (stat (file, &sb))
+ {
+ fprintf (stderr, _("%s: cannot stat %s: %s\n"), argv[0], file,
+ strerror (errno));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+
+ head = parse_netrc (file);
+ a = head;
+ while (a)
+ {
+ /* Skip if we have a target and this isn't it. */
+ if (target && a->host && strcmp (target, a->host))
+ {
+ a = a->next;
+ continue;
+ }
+
+ if (!target)
+ {
+ /* Print the host name if we have no target. */
+ if (a->host)
+ fputs (a->host, stdout);
+ else
+ fputs ("DEFAULT", stdout);
+
+ fputc (' ', stdout);
+ }
+
+ /* Print the account name. */
+ fputs (a->acc, stdout);
+
+ if (a->passwd)
+ {
+ /* Print the password, if there is any. */
+ fputc (' ', stdout);
+ fputs (a->passwd, stdout);
+ }
+
+ fputc ('\n', stdout);
+
+ /* Exit if we found the target. */
+ if (target)
+ exit (WGET_EXIT_SUCCESS);
+ a = a->next;
+ }
+
+ /* Exit with failure if we had a target, success otherwise. */
+ if (target)
+ exit (WGET_EXIT_GENERIC_ERROR);
+
+ exit (WGET_EXIT_SUCCESS);
+}
+#endif /* STANDALONE */
diff --git a/src/netrc.h b/src/netrc.h
new file mode 100644
index 0000000..903b8fa
--- /dev/null
+++ b/src/netrc.h
@@ -0,0 +1,39 @@
+/* Declarations for netrc.c
+ Copyright (C) 1996, 1996-1997, 2007-2011, 2015, 2018-2020 Free
+ Software Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef NETRC_H
+#define NETRC_H
+
+#include <stdio.h>
+
+void search_netrc (const char *, const char **, const char **, int, FILE *);
+void netrc_cleanup(void);
+
+#endif /* NETRC_H */
diff --git a/src/openssl.c b/src/openssl.c
new file mode 100644
index 0000000..d6099ba
--- /dev/null
+++ b/src/openssl.c
@@ -0,0 +1,1260 @@
+/* SSL support via OpenSSL library.
+ Copyright (C) 2000-2012, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+ Originally contributed by Christian Fraenkel.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+#include <assert.h>
+#include <errno.h>
+#include <unistd.h>
+#include <string.h>
+#include <xalloc.h>
+
+#include <openssl/ssl.h>
+#include <openssl/x509v3.h>
+#include <openssl/err.h>
+#include <openssl/rand.h>
+#include <openssl/bio.h>
+#if OPENSSL_VERSION_NUMBER >= 0x00907000
+#include <openssl/conf.h>
+#ifndef OPENSSL_NO_ENGINE
+#include <openssl/engine.h>
+#endif
+#endif
+
+#include <sys/ioctl.h>
+
+#include "utils.h"
+#include "connect.h"
+#include "ptimer.h"
+#include "url.h"
+#include "ssl.h"
+
+#include <fcntl.h>
+
+#ifdef WINDOWS
+# include <w32sock.h>
+#endif
+
+/* Application-wide SSL context. This is common to all SSL
+ connections. */
+static SSL_CTX *ssl_ctx;
+
+/* Initialize the SSL's PRNG using various methods. */
+
+static void
+init_prng (void)
+{
+ char namebuf[256];
+ const char *random_file;
+
+ /* Seed from a file specified by the user. This will be the file
+ specified with --random-file, $RANDFILE, if set, or ~/.rnd, if it
+ exists. */
+ if (opt.random_file)
+ random_file = opt.random_file;
+ else
+ {
+ /* Get the random file name using RAND_file_name. */
+ namebuf[0] = '\0';
+ random_file = RAND_file_name (namebuf, sizeof (namebuf));
+ if (!file_exists_p (random_file, NULL))
+ random_file = NULL;
+ }
+
+ if (random_file && *random_file)
+ /* Seed at most 16k (apparently arbitrary value borrowed from
+ curl) from random file. */
+ {
+ int _err = RAND_load_file (random_file, 16384);
+ if(_err == -1)
+ /* later the thread error queue will be cleared */
+ if ( (_err = ERR_peek_last_error ()) )
+ logprintf (LOG_VERBOSE, "WARNING: Could not load random file: %s, %s\n", opt.random_file, ERR_reason_error_string(_err));
+ }
+
+#ifdef HAVE_RAND_EGD
+ /* Get random data from EGD if opt.egd_file was used. */
+ if (opt.egd_file && *opt.egd_file)
+ RAND_egd (opt.egd_file);
+#endif
+
+#ifdef WINDOWS
+ /* Under Windows, we can try to seed the PRNG using screen content.
+ This may or may not work, depending on whether we'll calling Wget
+ interactively. */
+
+ RAND_screen ();
+ if (RAND_status ())
+ return;
+#endif
+
+#if 0 /* don't do this by default */
+ {
+ int maxrand = 500;
+
+ /* Still not random enough, presumably because neither /dev/random
+ nor EGD were available. Try to seed OpenSSL's PRNG with libc
+ PRNG. This is cryptographically weak and defeats the purpose
+ of using OpenSSL, which is why it is highly discouraged. */
+
+ logprintf (LOG_NOTQUIET, _("WARNING: using a weak random seed.\n"));
+
+ while (RAND_status () == 0 && maxrand-- > 0)
+ {
+ unsigned char rnd = random_number (256);
+ RAND_seed (&rnd, sizeof (rnd));
+ }
+ }
+#endif
+}
+
+/* Print errors in the OpenSSL error stack. */
+
+static void
+print_errors (void)
+{
+ unsigned long err;
+ while ((err = ERR_get_error ()) != 0)
+ logprintf (LOG_NOTQUIET, "OpenSSL: %s\n", ERR_error_string (err, NULL));
+}
+
+/* Convert keyfile type as used by options.h to a type as accepted by
+ SSL_CTX_use_certificate_file and SSL_CTX_use_PrivateKey_file.
+
+ (options.h intentionally doesn't use values from openssl/ssl.h so
+ it doesn't depend specifically on OpenSSL for SSL functionality.) */
+
+static int
+key_type_to_ssl_type (enum keyfile_type type)
+{
+ switch (type)
+ {
+ case keyfile_pem:
+ return SSL_FILETYPE_PEM;
+ case keyfile_asn1:
+ return SSL_FILETYPE_ASN1;
+ default:
+ abort ();
+ }
+}
+
+/* SSL has been initialized */
+static int ssl_true_initialized = 0;
+
+/* Create an SSL Context and set default paths etc. Called the first
+ time an HTTP download is attempted.
+
+ Returns true on success, false otherwise. */
+
+bool
+ssl_init (void)
+{
+ SSL_METHOD const *meth;
+ long ssl_options = 0;
+ char *ciphers_string = NULL;
+#if !defined(LIBRESSL_VERSION_NUMBER) && (OPENSSL_VERSION_NUMBER >= 0x10100000L)
+ int ssl_proto_version = 0;
+#endif
+
+#if OPENSSL_VERSION_NUMBER >= 0x00907000
+ if (ssl_true_initialized == 0)
+ {
+#if !defined(LIBRESSL_VERSION_NUMBER) && (OPENSSL_VERSION_NUMBER >= 0x10100000L)
+ OPENSSL_init_ssl (OPENSSL_INIT_LOAD_CONFIG | OPENSSL_INIT_ENGINE_ALL_BUILTIN, NULL);
+#else
+ OPENSSL_config (NULL);
+#endif
+ ssl_true_initialized = 1;
+ }
+#endif
+
+ if (ssl_ctx)
+ /* The SSL has already been initialized. */
+ return true;
+
+ /* Init the PRNG. If that fails, bail out. */
+ init_prng ();
+ if (RAND_status () != 1)
+ {
+ logprintf (LOG_NOTQUIET,
+ _("Could not seed PRNG; consider using --random-file.\n"));
+ goto error;
+ }
+
+#if defined(LIBRESSL_VERSION_NUMBER) || (OPENSSL_VERSION_NUMBER < 0x10100000L)
+ SSL_library_init ();
+ SSL_load_error_strings ();
+ SSLeay_add_all_algorithms ();
+ SSLeay_add_ssl_algorithms ();
+#endif
+
+ switch (opt.secure_protocol)
+ {
+#if !defined OPENSSL_NO_SSL2 && OPENSSL_VERSION_NUMBER < 0x10100000L
+ case secure_protocol_sslv2:
+ meth = SSLv2_client_method ();
+ break;
+#endif
+
+#ifndef OPENSSL_NO_SSL3_METHOD
+ case secure_protocol_sslv3:
+ meth = SSLv3_client_method ();
+ break;
+#endif
+
+ case secure_protocol_auto:
+ case secure_protocol_pfs:
+ meth = SSLv23_client_method ();
+ ssl_options |= SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3;
+ break;
+ case secure_protocol_tlsv1:
+#if !defined(LIBRESSL_VERSION_NUMBER) && (OPENSSL_VERSION_NUMBER >= 0x10100000L)
+ meth = TLS_client_method();
+ ssl_proto_version = TLS1_VERSION;
+#else
+ meth = TLSv1_client_method ();
+#endif
+ break;
+
+#if OPENSSL_VERSION_NUMBER >= 0x10001000
+ case secure_protocol_tlsv1_1:
+#if !defined(LIBRESSL_VERSION_NUMBER) && (OPENSSL_VERSION_NUMBER >= 0x10100000L)
+ meth = TLS_client_method();
+ ssl_proto_version = TLS1_1_VERSION;
+#else
+ meth = TLSv1_1_client_method ();
+#endif
+ break;
+
+ case secure_protocol_tlsv1_2:
+#if !defined(LIBRESSL_VERSION_NUMBER) && (OPENSSL_VERSION_NUMBER >= 0x10100000L)
+ meth = TLS_client_method();
+ ssl_proto_version = TLS1_2_VERSION;
+#else
+ meth = TLSv1_2_client_method ();
+#endif
+ break;
+
+ case secure_protocol_tlsv1_3:
+#if !defined(LIBRESSL_VERSION_NUMBER) && (OPENSSL_VERSION_NUMBER >= 0x10100000L) && defined TLS1_3_VERSION
+ meth = TLS_client_method();
+ ssl_proto_version = TLS1_3_VERSION;
+#else
+ logprintf (LOG_NOTQUIET, _("Your OpenSSL version is too old to support TLS 1.3\n"));
+ goto error;
+#endif
+ break;
+#else
+ case secure_protocol_tlsv1_1:
+ logprintf (LOG_NOTQUIET, _("Your OpenSSL version is too old to support TLSv1.1\n"));
+ goto error;
+
+ case secure_protocol_tlsv1_2:
+ logprintf (LOG_NOTQUIET, _("Your OpenSSL version is too old to support TLSv1.2\n"));
+ goto error;
+
+#endif
+
+ default:
+ logprintf (LOG_NOTQUIET, _("OpenSSL: unimplemented 'secure-protocol' option value %d\n"), opt.secure_protocol);
+ logprintf (LOG_NOTQUIET, _("Please report this issue to bug-wget@gnu.org\n"));
+ abort ();
+ }
+
+ /* The type cast below accommodates older OpenSSL versions (0.9.8)
+ where SSL_CTX_new() is declared without a "const" argument. */
+ ssl_ctx = SSL_CTX_new ((SSL_METHOD *)meth);
+ if (!ssl_ctx)
+ goto error;
+
+ if (ssl_options)
+ SSL_CTX_set_options (ssl_ctx, ssl_options);
+
+#if ((OPENSSL_VERSION_NUMBER >= 0x10101000L) && \
+ !defined(LIBRESSL_VERSION_NUMBER) && \
+ !defined(OPENSSL_IS_BORINGSSL))
+ SSL_CTX_set_post_handshake_auth (ssl_ctx, 1);
+#endif
+
+#if !defined(LIBRESSL_VERSION_NUMBER) && (OPENSSL_VERSION_NUMBER >= 0x10100000L)
+ if (ssl_proto_version)
+ SSL_CTX_set_min_proto_version(ssl_ctx, ssl_proto_version);
+#endif
+
+ /* OpenSSL ciphers: https://www.openssl.org/docs/apps/ciphers.html
+ *
+ * Rules:
+ * 1. --ciphers overrides everything
+ * 2. We allow RSA key exchange by default (secure_protocol_auto)
+ * 3. We disallow RSA key exchange if PFS was requested (secure_protocol_pfs)
+ */
+ if (!opt.tls_ciphers_string)
+ {
+ if (opt.secure_protocol == secure_protocol_auto)
+ ciphers_string = "HIGH:!aNULL:!RC4:!MD5:!SRP:!PSK";
+ else if (opt.secure_protocol == secure_protocol_pfs)
+ ciphers_string = "HIGH:!aNULL:!RC4:!MD5:!SRP:!PSK:!kRSA";
+ }
+ else
+ {
+ ciphers_string = opt.tls_ciphers_string;
+ }
+
+ if (ciphers_string && !SSL_CTX_set_cipher_list(ssl_ctx, ciphers_string))
+ {
+ logprintf(LOG_NOTQUIET, _("OpenSSL: Invalid cipher list: %s\n"), ciphers_string);
+ goto error;
+ }
+
+ SSL_CTX_set_default_verify_paths (ssl_ctx);
+ SSL_CTX_load_verify_locations (ssl_ctx, opt.ca_cert, opt.ca_directory);
+
+#ifdef X509_V_FLAG_PARTIAL_CHAIN
+ /* Set X509_V_FLAG_PARTIAL_CHAIN to allow the client to anchor trust in
+ * a non-self-signed certificate. This defies RFC 4158 (Path Building)
+ * which defines a trust anchor in terms of a self-signed certificate.
+ * However, it substantially reduces attack surface by pruning the tree
+ * of unneeded trust points. For example, the cross-certified
+ * Let's Encrypt X3 CA, which protects gnu.org and appears as an
+ * intermediate CA to clients, can be used as a trust anchor without
+ * the entire IdentTrust PKI.
+ */
+ X509_VERIFY_PARAM *param = X509_VERIFY_PARAM_new();
+ if (param)
+ {
+ /* We only want X509_V_FLAG_PARTIAL_CHAIN, but the OpenSSL docs
+ * say to use X509_V_FLAG_TRUSTED_FIRST also. It looks like
+ * X509_V_FLAG_TRUSTED_FIRST applies to a collection of trust
+ * anchors and not a single trust anchor.
+ */
+ (void) X509_VERIFY_PARAM_set_flags (param, X509_V_FLAG_TRUSTED_FIRST | X509_V_FLAG_PARTIAL_CHAIN);
+ if (SSL_CTX_set1_param (ssl_ctx, param) == 0)
+ logprintf(LOG_NOTQUIET, _("OpenSSL: Failed set trust to partial chain\n"));
+ /* We continue on error */
+ X509_VERIFY_PARAM_free (param);
+ }
+ else
+ {
+ logprintf(LOG_NOTQUIET, _("OpenSSL: Failed to allocate verification param\n"));
+ /* We continue on error */
+ }
+#endif
+
+ if (opt.crl_file)
+ {
+ X509_STORE *store = SSL_CTX_get_cert_store (ssl_ctx);
+ X509_LOOKUP *lookup;
+
+ if (!(lookup = X509_STORE_add_lookup (store, X509_LOOKUP_file ()))
+ || (!X509_load_crl_file (lookup, opt.crl_file, X509_FILETYPE_PEM)))
+ goto error;
+
+ X509_STORE_set_flags (store, X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL);
+ }
+
+ /* SSL_VERIFY_NONE instructs OpenSSL not to abort SSL_connect if the
+ certificate is invalid. We verify the certificate separately in
+ ssl_check_certificate, which provides much better diagnostics
+ than examining the error stack after a failed SSL_connect. */
+ SSL_CTX_set_verify (ssl_ctx, SSL_VERIFY_NONE, NULL);
+
+ /* Use the private key from the cert file unless otherwise specified. */
+ if (opt.cert_file && !opt.private_key)
+ {
+ opt.private_key = xstrdup (opt.cert_file);
+ opt.private_key_type = opt.cert_type;
+ }
+
+ /* Use cert from private key file unless otherwise specified. */
+ if (opt.private_key && !opt.cert_file)
+ {
+ opt.cert_file = xstrdup (opt.private_key);
+ opt.cert_type = opt.private_key_type;
+ }
+
+ if (opt.cert_file)
+ if (SSL_CTX_use_certificate_file (ssl_ctx, opt.cert_file,
+ key_type_to_ssl_type (opt.cert_type))
+ != 1)
+ goto error;
+ if (opt.private_key)
+ if (SSL_CTX_use_PrivateKey_file (ssl_ctx, opt.private_key,
+ key_type_to_ssl_type (opt.private_key_type))
+ != 1)
+ goto error;
+
+ /* Since fd_write unconditionally assumes partial writes (and
+ handles them correctly), allow them in OpenSSL. */
+ SSL_CTX_set_mode (ssl_ctx, SSL_MODE_ENABLE_PARTIAL_WRITE);
+
+ /* The OpenSSL library can handle renegotiations automatically, so
+ tell it to do so. */
+ SSL_CTX_set_mode (ssl_ctx, SSL_MODE_AUTO_RETRY);
+
+ return true;
+
+ error:
+ if (ssl_ctx)
+ SSL_CTX_free (ssl_ctx);
+ print_errors ();
+ return false;
+}
+
+void
+ssl_cleanup (void)
+{
+}
+
+struct openssl_transport_context
+{
+ SSL *conn; /* SSL connection handle */
+ SSL_SESSION *sess; /* SSL session info */
+ char *last_error; /* last error printed with openssl_errstr */
+};
+
+typedef int (*ssl_fn_t)(SSL *, void *, int);
+
+#ifdef OPENSSL_RUN_WITHTIMEOUT
+
+struct scwt_context
+{
+ SSL *ssl;
+ int result;
+};
+
+static void
+ssl_connect_with_timeout_callback(void *arg)
+{
+ struct scwt_context *ctx = (struct scwt_context *)arg;
+ ctx->result = SSL_connect(ctx->ssl);
+}
+
+static int
+ssl_connect_with_timeout(int fd _GL_UNUSED, SSL *conn, double timeout)
+{
+ struct scwt_context scwt_ctx;
+ scwt_ctx.ssl = conn;
+ errno = 0;
+ if (run_with_timeout(timeout, ssl_connect_with_timeout_callback,
+ &scwt_ctx))
+ {
+ errno = ETIMEDOUT;
+ return -1;
+ }
+ return scwt_ctx.result;
+}
+
+struct openssl_read_args
+{
+ int fd;
+ struct openssl_transport_context *ctx;
+ ssl_fn_t fn;
+ char *buf;
+ int bufsize;
+ int retval;
+};
+
+static void
+openssl_read_peek_callback(void *arg)
+{
+ struct openssl_read_args *args = (struct openssl_read_args *) arg;
+ struct openssl_transport_context *ctx = args->ctx;
+ ssl_fn_t fn = args->fn;
+ SSL *conn = ctx->conn;
+ char *buf = args->buf;
+ int bufsize = args->bufsize;
+ int ret;
+
+ do
+ {
+ ret = fn (conn, buf, bufsize);
+ }
+ while (ret == -1 && SSL_get_error (conn, ret) == SSL_ERROR_SYSCALL && errno == EINTR);
+ args->retval = ret;
+}
+
+static int
+openssl_read_peek (int fd, char *buf, int bufsize, void *arg, double timeout, ssl_fn_t fn)
+{
+ struct openssl_transport_context *ctx = arg;
+ int ret = SSL_pending (ctx->conn);
+
+ if (ret)
+ ret = fn (ctx->conn, buf, MIN (bufsize, ret));
+ else
+ {
+ struct openssl_read_args args;
+ args.fd = fd;
+ args.buf = buf;
+ args.bufsize = bufsize;
+ args.fn = fn;
+ args.ctx = ctx;
+
+ if (timeout == -1)
+ timeout = opt.read_timeout;
+
+ if (run_with_timeout(timeout, openssl_read_peek_callback, &args))
+ {
+ errno = ETIMEDOUT;
+ ret = -1;
+ }
+ else
+ ret = args.retval;
+ }
+ return ret;
+}
+
+#else /* OPENSSL_RUN_WITHTIMEOUT */
+
+#ifdef F_GETFL
+#define NONBLOCK_DECL int flags = 0;
+#define FD_SET_NONBLOCKED(_fd) \
+ flags = fcntl (_fd, F_GETFL, 0); \
+ if (flags < 0) \
+ return flags; \
+ if (fcntl (_fd, F_SETFL, flags | O_NONBLOCK)) \
+ return -1;
+#define FD_SET_BLOCKED(_fd) \
+ if (fcntl (_fd, F_SETFL, flags) < 0) \
+ return -1;
+#else
+#define NONBLOCK_DECL
+#define FD_SET_NONBLOCKED(_fd) \
+ {\
+ const int one = 1;\
+ if (ioctl (_fd, FIONBIO, &one) < 0)\
+ return -1;\
+ }
+#define FD_SET_BLOCKED(_fd) \
+ {\
+ const int zero = 0;\
+ if (ioctl (_fd, FIONBIO, &zero) < 0)\
+ return -1;\
+ }
+#endif /* F_GETFL */
+
+#define TIMER_INIT(_fd, _ret, _timeout) \
+ { \
+ NONBLOCK_DECL \
+ int timed_out = 0; \
+ FD_SET_NONBLOCKED(_fd) \
+ struct ptimer *timer = ptimer_new (); \
+ if (timer == NULL) \
+ _ret = -1; \
+ else \
+ { \
+ double next_timeout = _timeout;
+
+#define TIMER_FREE(_fd) \
+ ptimer_destroy (timer); \
+ } \
+ FD_SET_BLOCKED(_fd) \
+ if (timed_out) \
+ { \
+ errno = ETIMEDOUT; \
+ } \
+ }
+
+#define TIMER_WAIT(_fd, _conn, _ret, _timeout) \
+ { \
+ int wait_for; \
+ int err = SSL_get_error(_conn, _ret); \
+ if (err == SSL_ERROR_WANT_READ) \
+ wait_for = WAIT_FOR_READ; \
+ else if (err == SSL_ERROR_WANT_WRITE) \
+ wait_for = WAIT_FOR_WRITE; \
+ else \
+ break; \
+ err = select_fd_nb (_fd, next_timeout, wait_for); \
+ if (err <= 0) \
+ { \
+ if (err == 0) \
+timedout: \
+ timed_out = 1; \
+ _ret = -1; \
+ break; \
+ } \
+ next_timeout = _timeout - ptimer_measure (timer); \
+ if (next_timeout <= 0) \
+ goto timedout; \
+ }
+
+static int
+ssl_connect_with_timeout(int fd, SSL *conn, double timeout)
+{
+ int ret;
+
+ errno = 0;
+ if (timeout == 0)
+ ret = SSL_connect(conn);
+ else
+ {
+ TIMER_INIT(fd, ret, timeout)
+ ERR_clear_error();
+ while( (ret = SSL_connect(conn)) < 0 )
+ TIMER_WAIT(fd, conn, ret, timeout)
+ TIMER_FREE(fd)
+ }
+
+ return ret;
+}
+
+static int
+openssl_read_peek (int fd, char *buf, int bufsize, void *arg, double timeout, ssl_fn_t fn)
+{
+ struct openssl_transport_context *ctx = arg;
+ int ret = SSL_pending (ctx->conn);
+
+ if (timeout == -1)
+ timeout = opt.read_timeout;
+ /* If we have data available for immediate read, simply return that,
+ or do blocked read when timeout == 0 */
+ if (ret || timeout == 0)
+ do
+ {
+ ret = fn (ctx->conn, buf, (ret ? MIN (bufsize, ret) : bufsize));
+ }
+ while (ret == -1 && SSL_get_error (ctx->conn, ret) == SSL_ERROR_SYSCALL && errno == EINTR);
+ else
+ {
+ TIMER_INIT(fd, ret, timeout)
+ while( (ret = fn (ctx->conn, buf, bufsize)) <= 0 )
+ TIMER_WAIT(fd, ctx->conn, ret, timeout)
+ TIMER_FREE(fd)
+ }
+
+ return ret;
+}
+
+#endif /* OPENSSL_RUN_WITHTIMEOUT */
+
+static int
+openssl_read (int fd, char *buf, int bufsize, void *arg, double timeout)
+{
+ return openssl_read_peek (fd, buf, bufsize, arg, timeout, SSL_read);
+}
+
+static int
+openssl_write (int fd _GL_UNUSED, char *buf, int bufsize, void *arg)
+{
+ int ret = 0;
+ struct openssl_transport_context *ctx = arg;
+ SSL *conn = ctx->conn;
+ do
+ ret = SSL_write (conn, buf, bufsize);
+ while (ret == -1 && SSL_get_error (conn, ret) == SSL_ERROR_SYSCALL && errno == EINTR);
+ return ret;
+}
+
+static int
+openssl_poll (int fd, double timeout, int wait_for, void *arg)
+{
+ struct openssl_transport_context *ctx = arg;
+ SSL *conn = ctx->conn;
+ if ((wait_for & WAIT_FOR_READ) && SSL_pending (conn))
+ return 1;
+ /* if (timeout == 0)
+ return 1; */
+ if (timeout == -1)
+ timeout = opt.read_timeout;
+ return select_fd (fd, timeout, wait_for);
+}
+
+static int
+openssl_peek (int fd, char *buf, int bufsize, void *arg, double timeout)
+{
+ return openssl_read_peek (fd, buf, bufsize, arg, timeout, SSL_peek);
+}
+
+static const char *
+openssl_errstr (int fd _GL_UNUSED, void *arg)
+{
+ struct openssl_transport_context *ctx = arg;
+ unsigned long errcode;
+ char *errmsg = NULL;
+ int msglen = 0;
+
+ /* If there are no SSL-specific errors, just return NULL. */
+ if ((errcode = ERR_get_error ()) == 0)
+ return NULL;
+
+ /* Get rid of previous contents of ctx->last_error, if any. */
+ xfree (ctx->last_error);
+
+ /* Iterate over OpenSSL's error stack and accumulate errors in the
+ last_error buffer, separated by "; ". This is better than using
+ a static buffer, which *always* takes up space (and has to be
+ large, to fit more than one error message), whereas these
+ allocations are only performed when there is an actual error. */
+
+ for (;;)
+ {
+ const char *str = ERR_error_string (errcode, NULL);
+ int len = strlen (str);
+
+ /* Allocate space for the existing message, plus two more chars
+ for the "; " separator and one for the terminating \0. */
+ errmsg = xrealloc (errmsg, msglen + len + 2 + 1);
+ memcpy (errmsg + msglen, str, len);
+ msglen += len;
+
+ /* Get next error and bail out if there are no more. */
+ errcode = ERR_get_error ();
+ if (errcode == 0)
+ break;
+
+ errmsg[msglen++] = ';';
+ errmsg[msglen++] = ' ';
+ }
+ errmsg[msglen] = '\0';
+
+ /* Store the error in ctx->last_error where openssl_close will
+ eventually find it and free it. */
+ ctx->last_error = errmsg;
+
+ return errmsg;
+}
+
+static void
+openssl_close (int fd, void *arg)
+{
+ struct openssl_transport_context *ctx = arg;
+ SSL *conn = ctx->conn;
+
+ SSL_shutdown (conn);
+ SSL_free (conn);
+ xfree (ctx->last_error);
+ xfree (ctx);
+
+ close (fd);
+
+ DEBUGP (("Closed %d/SSL 0x%0*lx\n", fd, PTR_FORMAT (conn)));
+}
+
+/* openssl_transport is the singleton that describes the SSL transport
+ methods provided by this file. */
+
+static struct transport_implementation openssl_transport = {
+ openssl_read, openssl_write, openssl_poll,
+ openssl_peek, openssl_errstr, openssl_close
+};
+
+static const char *
+_sni_hostname(const char *hostname)
+{
+ size_t len = strlen(hostname);
+
+ char *sni_hostname = xmemdup(hostname, len + 1);
+
+ /* Remove trailing dot(s) to fix #47408.
+ * Regarding RFC 6066 (SNI): The hostname is represented as a byte
+ * string using ASCII encoding without a trailing dot. */
+ while (len && sni_hostname[--len] == '.')
+ sni_hostname[len] = 0;
+
+ return sni_hostname;
+}
+
+/* Perform the SSL handshake on file descriptor FD, which is assumed
+ to be connected to an SSL server. The SSL handle provided by
+ OpenSSL is registered with the file descriptor FD using
+ fd_register_transport, so that subsequent calls to fd_read,
+ fd_write, etc., will use the corresponding SSL functions.
+
+ Returns true on success, false on failure. */
+
+bool
+ssl_connect_wget (int fd, const char *hostname, int *continue_session)
+{
+ SSL *conn;
+ struct openssl_transport_context *ctx;
+
+ DEBUGP (("Initiating SSL handshake.\n"));
+
+ assert (ssl_ctx != NULL);
+ conn = SSL_new (ssl_ctx);
+ if (!conn)
+ goto error;
+#if OPENSSL_VERSION_NUMBER >= 0x0090806fL && !defined(OPENSSL_NO_TLSEXT)
+ /* If the SSL library was built with support for ServerNameIndication
+ then use it whenever we have a hostname. If not, don't, ever. */
+ if (! is_valid_ip_address (hostname))
+ {
+ const char *sni_hostname = _sni_hostname(hostname);
+
+ long rc = SSL_set_tlsext_host_name (conn, sni_hostname);
+ xfree(sni_hostname);
+
+ if (rc == 0)
+ {
+ DEBUGP (("Failed to set TLS server-name indication."));
+ goto error;
+ }
+ }
+#endif
+
+ if (continue_session)
+ {
+ /* attempt to resume a previous SSL session */
+ ctx = (struct openssl_transport_context *) fd_transport_context (*continue_session);
+ if (!ctx || !ctx->sess || !SSL_set_session (conn, ctx->sess))
+ goto error;
+ }
+
+#ifndef FD_TO_SOCKET
+# define FD_TO_SOCKET(X) (X)
+#endif
+ if (!SSL_set_fd (conn, FD_TO_SOCKET (fd)))
+ goto error;
+ SSL_set_connect_state (conn);
+
+ /* Re-seed the PRNG before the SSL handshake */
+ init_prng ();
+ if (RAND_status () != 1)
+ {
+ logprintf(LOG_NOTQUIET,
+ _("WARNING: Could not seed PRNG. Consider using --random-file.\n"));
+ goto error;
+ }
+
+ if (ssl_connect_with_timeout(fd, conn, opt.read_timeout) <= 0
+ || !SSL_is_init_finished(conn))
+ goto timedout;
+
+ ctx = xnew0 (struct openssl_transport_context);
+ ctx->conn = conn;
+ ctx->sess = SSL_get0_session (conn);
+ if (!ctx->sess)
+ logprintf (LOG_NOTQUIET, "WARNING: Could not save SSL session data for socket %d\n", fd);
+
+ /* Register FD with Wget's transport layer, i.e. arrange that our
+ functions are used for reading, writing, and polling. */
+ fd_register_transport (fd, &openssl_transport, ctx);
+ DEBUGP (("Handshake successful; connected socket %d to SSL handle 0x%0*lx\n",
+ fd, PTR_FORMAT (conn)));
+
+ ERR_clear_error ();
+ return true;
+
+ timedout:
+ if (errno == ETIMEDOUT)
+ DEBUGP (("SSL handshake timed out.\n"));
+ else
+ error:
+ DEBUGP (("SSL handshake failed.\n"));
+ print_errors ();
+ if (conn)
+ SSL_free (conn);
+ return false;
+}
+
+#define ASTERISK_EXCLUDES_DOT /* mandated by rfc2818 */
+
+/* Return true is STRING (case-insensitively) matches PATTERN, false
+ otherwise. The recognized wildcard character is "*", which matches
+ any character in STRING except ".". Any number of the "*" wildcard
+ may be present in the pattern.
+
+ This is used to match of hosts as indicated in rfc2818: "Names may
+ contain the wildcard character * which is considered to match any
+ single domain name component or component fragment. E.g., *.a.com
+ matches foo.a.com but not bar.foo.a.com. f*.com matches foo.com but
+ not bar.com [or foo.bar.com]."
+
+ If the pattern contain no wildcards, pattern_match(a, b) is
+ equivalent to !strcasecmp(a, b). */
+
+static bool
+pattern_match (const char *pattern, const char *string)
+{
+ const char *p = pattern, *n = string;
+ char c;
+ for (; (c = c_tolower (*p++)) != '\0'; n++)
+ if (c == '*')
+ {
+ for (c = c_tolower (*p); c == '*'; c = c_tolower (*++p))
+ ;
+ for (; *n != '\0'; n++)
+ if (c_tolower (*n) == c && pattern_match (p, n))
+ return true;
+#ifdef ASTERISK_EXCLUDES_DOT
+ else if (*n == '.')
+ return false;
+#endif
+ return c == '\0';
+ }
+ else
+ {
+ if (c != c_tolower (*n))
+ return false;
+ }
+ return *n == '\0';
+}
+
+static char *_get_rfc2253_formatted (X509_NAME *name)
+{
+ int len;
+ char *out = NULL;
+ BIO* b;
+
+ if ((b = BIO_new (BIO_s_mem ())))
+ {
+ if (X509_NAME_print_ex (b, name, 0, XN_FLAG_RFC2253) >= 0
+ && (len = BIO_number_written (b)) > 0)
+ {
+ out = xmalloc (len + 1);
+ BIO_read (b, out, len);
+ out[len] = 0;
+ }
+ BIO_free (b);
+ }
+
+ return out ? out : xstrdup("");
+}
+
+/*
+ * Heavily modified from:
+ * https://www.owasp.org/index.php/Certificate_and_Public_Key_Pinning#OpenSSL
+ */
+static bool
+pkp_pin_peer_pubkey (X509* cert, const char *pinnedpubkey)
+{
+ /* Scratch */
+ int len1 = 0, len2 = 0;
+ char *buff1 = NULL, *temp = NULL;
+
+ /* Result is returned to caller */
+ bool result = false;
+
+ /* if a path wasn't specified, don't pin */
+ if (!pinnedpubkey)
+ return true;
+
+ if (!cert)
+ return result;
+
+ /* Begin Gyrations to get the subjectPublicKeyInfo */
+ /* Thanks to Viktor Dukhovni on the OpenSSL mailing list */
+
+ /* https://groups.google.com/group/mailing.openssl.users/browse_thread
+ /thread/d61858dae102c6c7 */
+ len1 = i2d_X509_PUBKEY (X509_get_X509_PUBKEY (cert), NULL);
+ if (len1 < 1)
+ goto cleanup; /* failed */
+
+ /* https://www.openssl.org/docs/crypto/buffer.html */
+ buff1 = temp = OPENSSL_malloc (len1);
+ if (!buff1)
+ goto cleanup; /* failed */
+
+ /* https://www.openssl.org/docs/crypto/d2i_X509.html */
+ len2 = i2d_X509_PUBKEY (X509_get_X509_PUBKEY (cert), (unsigned char **) &temp);
+
+ /*
+ * These checks are verifying we got back the same values as when we
+ * sized the buffer. It's pretty weak since they should always be the
+ * same. But it gives us something to test.
+ */
+ if ((len1 != len2) || !temp || ((temp - buff1) != len1))
+ goto cleanup; /* failed */
+
+ /* End Gyrations */
+
+ /* The one good exit point */
+ result = wg_pin_peer_pubkey (pinnedpubkey, buff1, len1);
+
+ cleanup:
+ /* https://www.openssl.org/docs/crypto/buffer.html */
+ if (NULL != buff1)
+ OPENSSL_free (buff1);
+
+ return result;
+}
+
+/* Verify the validity of the certificate presented by the server.
+ Also check that the "common name" of the server, as presented by
+ its certificate, corresponds to HOST. (HOST typically comes from
+ the URL and is what the user thinks he's connecting to.)
+
+ This assumes that ssl_connect_wget has successfully finished, i.e. that
+ the SSL handshake has been performed and that FD is connected to an
+ SSL handle.
+
+ If opt.check_cert is true (the default), this returns 1 if the
+ certificate is valid, 0 otherwise. If opt.check_cert is 0, the
+ function always returns 1, but should still be called because it
+ warns the user about any problems with the certificate. */
+
+bool
+ssl_check_certificate (int fd, const char *host)
+{
+ X509 *cert;
+ GENERAL_NAMES *subjectAltNames;
+ char common_name[256];
+ long vresult;
+ bool success = true;
+ bool alt_name_checked = false;
+ bool pinsuccess = opt.pinnedpubkey == NULL;
+
+ /* If the user has specified --no-check-cert, we still want to warn
+ him about problems with the server's certificate. */
+ const char *severity = opt.check_cert ? _("ERROR") : _("WARNING");
+
+ struct openssl_transport_context *ctx = fd_transport_context (fd);
+ SSL *conn = ctx->conn;
+ assert (conn != NULL);
+
+ /* The user explicitly said to not check for the certificate. */
+ if (opt.check_cert == CHECK_CERT_QUIET && pinsuccess)
+ return success;
+
+ cert = SSL_get_peer_certificate (conn);
+ if (!cert)
+ {
+ logprintf (LOG_NOTQUIET, _("%s: No certificate presented by %s.\n"),
+ severity, quotearg_style (escape_quoting_style, host));
+ success = false;
+ goto no_cert; /* must bail out since CERT is NULL */
+ }
+
+ IF_DEBUG
+ {
+ char *subject = _get_rfc2253_formatted (X509_get_subject_name (cert));
+ char *issuer = _get_rfc2253_formatted (X509_get_issuer_name (cert));
+ DEBUGP (("certificate:\n subject: %s\n issuer: %s\n",
+ quotearg_n_style (0, escape_quoting_style, subject),
+ quotearg_n_style (1, escape_quoting_style, issuer)));
+ xfree (subject);
+ xfree (issuer);
+ }
+
+ vresult = SSL_get_verify_result (conn);
+ if (vresult != X509_V_OK)
+ {
+ char *issuer = _get_rfc2253_formatted (X509_get_issuer_name (cert));
+ logprintf (LOG_NOTQUIET,
+ _("%s: cannot verify %s's certificate, issued by %s:\n"),
+ severity, quotearg_n_style (0, escape_quoting_style, host),
+ quote_n (1, issuer));
+ xfree(issuer);
+
+ /* Try to print more user-friendly (and translated) messages for
+ the frequent verification errors. */
+ switch (vresult)
+ {
+ case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
+ logprintf (LOG_NOTQUIET,
+ _(" Unable to locally verify the issuer's authority.\n"));
+ break;
+ case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
+ case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
+ logprintf (LOG_NOTQUIET,
+ _(" Self-signed certificate encountered.\n"));
+ break;
+ case X509_V_ERR_CERT_NOT_YET_VALID:
+ logprintf (LOG_NOTQUIET, _(" Issued certificate not yet valid.\n"));
+ break;
+ case X509_V_ERR_CERT_HAS_EXPIRED:
+ logprintf (LOG_NOTQUIET, _(" Issued certificate has expired.\n"));
+ break;
+ default:
+ /* For the less frequent error strings, simply provide the
+ OpenSSL error message. */
+ logprintf (LOG_NOTQUIET, " %s\n",
+ X509_verify_cert_error_string (vresult));
+ }
+ success = false;
+ /* Fall through, so that the user is warned about *all* issues
+ with the cert (important with --no-check-certificate.) */
+ }
+
+ /* Check that HOST matches the common name in the certificate.
+ #### The following remains to be done:
+
+ - When matching against common names, it should loop over all
+ common names and choose the most specific one, i.e. the last
+ one, not the first one, which the current code picks.
+
+ - Ensure that ASN1 strings from the certificate are encoded as
+ UTF-8 which can be meaningfully compared to HOST. */
+
+ subjectAltNames = X509_get_ext_d2i (cert, NID_subject_alt_name, NULL, NULL);
+
+ if (subjectAltNames)
+ {
+ /* Test subject alternative names */
+
+ /* SNI hostname must not have a trailing dot */
+ const char *sni_hostname = _sni_hostname(host);
+
+ /* Do we want to check for dNSNAmes or ipAddresses (see RFC 2818)?
+ * Signal it by host_in_octet_string. */
+ ASN1_OCTET_STRING *host_in_octet_string = a2i_IPADDRESS (sni_hostname);
+
+ int numaltnames = sk_GENERAL_NAME_num (subjectAltNames);
+ int i;
+ for (i=0; i < numaltnames; i++)
+ {
+ const GENERAL_NAME *name =
+ sk_GENERAL_NAME_value (subjectAltNames, i);
+ if (name)
+ {
+ if (host_in_octet_string)
+ {
+ if (name->type == GEN_IPADD)
+ {
+ /* Check for ipAddress */
+ /* TODO: Should we convert between IPv4-mapped IPv6
+ * addresses and IPv4 addresses? */
+ alt_name_checked = true;
+ if (!ASN1_STRING_cmp (host_in_octet_string,
+ name->d.iPAddress))
+ break;
+ }
+ }
+ else if (name->type == GEN_DNS)
+ {
+ /* dNSName should be IA5String (i.e. ASCII), however who
+ * does trust CA? Convert it into UTF-8 for sure. */
+ unsigned char *name_in_utf8 = NULL;
+
+ /* Check for dNSName */
+ alt_name_checked = true;
+
+ if (0 <= ASN1_STRING_to_UTF8 (&name_in_utf8, name->d.dNSName))
+ {
+ /* Compare and check for NULL attack in ASN1_STRING */
+ if (pattern_match ((char *)name_in_utf8, sni_hostname) &&
+ (strlen ((char *)name_in_utf8) ==
+ (size_t) ASN1_STRING_length (name->d.dNSName)))
+ {
+ OPENSSL_free (name_in_utf8);
+ break;
+ }
+ OPENSSL_free (name_in_utf8);
+ }
+ }
+ }
+ }
+ sk_GENERAL_NAME_pop_free(subjectAltNames, GENERAL_NAME_free);
+ if (host_in_octet_string)
+ ASN1_OCTET_STRING_free(host_in_octet_string);
+
+ if (alt_name_checked == true && i >= numaltnames)
+ {
+ logprintf (LOG_NOTQUIET,
+ _("%s: no certificate subject alternative name matches\n"
+ "\trequested host name %s.\n"),
+ severity, quote_n (1, sni_hostname));
+ success = false;
+ }
+
+ xfree(sni_hostname);
+ }
+
+ if (alt_name_checked == false)
+ {
+ /* Test commomName */
+ X509_NAME *xname = X509_get_subject_name(cert);
+ common_name[0] = '\0';
+ X509_NAME_get_text_by_NID (xname, NID_commonName, common_name,
+ sizeof (common_name));
+
+ if (!pattern_match (common_name, host))
+ {
+ logprintf (LOG_NOTQUIET, _("\
+ %s: certificate common name %s doesn't match requested host name %s.\n"),
+ severity, quote_n (0, common_name), quote_n (1, host));
+ success = false;
+ }
+ else
+ {
+ /* We now determine the length of the ASN1 string. If it
+ * differs from common_name's length, then there is a \0
+ * before the string terminates. This can be an instance of a
+ * null-prefix attack.
+ *
+ * https://www.blackhat.com/html/bh-usa-09/bh-usa-09-archives.html#Marlinspike
+ * */
+
+ int i = -1, j;
+ X509_NAME_ENTRY *xentry;
+ ASN1_STRING *sdata;
+
+ if (xname) {
+ for (;;)
+ {
+ j = X509_NAME_get_index_by_NID (xname, NID_commonName, i);
+ if (j == -1) break;
+ i = j;
+ }
+ }
+
+ xentry = X509_NAME_get_entry(xname,i);
+ sdata = X509_NAME_ENTRY_get_data(xentry);
+ if (strlen (common_name) != (size_t) ASN1_STRING_length (sdata))
+ {
+ logprintf (LOG_NOTQUIET, _("\
+ %s: certificate common name is invalid (contains a NUL character).\n\
+ This may be an indication that the host is not who it claims to be\n\
+ (that is, it is not the real %s).\n"),
+ severity, quote (host));
+ success = false;
+ }
+ }
+ }
+
+ pinsuccess = pkp_pin_peer_pubkey (cert, opt.pinnedpubkey);
+ if (!pinsuccess)
+ {
+ logprintf (LOG_ALWAYS, _("The public key does not match pinned public key!\n"));
+ success = false;
+ }
+
+
+ if (success)
+ DEBUGP (("X509 certificate successfully verified and matches host %s\n",
+ quotearg_style (escape_quoting_style, host)));
+ X509_free (cert);
+
+ no_cert:
+ if (opt.check_cert == CHECK_CERT_ON && !success)
+ logprintf (LOG_NOTQUIET, _("\
+To connect to %s insecurely, use `--no-check-certificate'.\n"),
+ quotearg_style (escape_quoting_style, host));
+
+ /* never return true if pinsuccess fails */
+ return !pinsuccess ? false : (opt.check_cert == CHECK_CERT_ON ? success : true);
+}
+
+/*
+ * vim: tabstop=2 shiftwidth=2 softtabstop=2
+ */
diff --git a/src/options.h b/src/options.h
new file mode 100644
index 0000000..9a02f3a
--- /dev/null
+++ b/src/options.h
@@ -0,0 +1,351 @@
+/* struct options.
+ Copyright (C) 1996-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+enum CHECK_CERT_MODES
+{
+ CHECK_CERT_OFF,
+ CHECK_CERT_ON,
+ CHECK_CERT_QUIET
+};
+
+struct options
+{
+ int verbose; /* Are we verbose? (First set to -1,
+ hence not boolean.) */
+ bool quiet; /* Are we quiet? */
+ int ntry; /* Number of tries per URL */
+ bool retry_connrefused; /* Treat CONNREFUSED as non-fatal. */
+ bool retry_on_host_error; /* Treat host errors as non-fatal. */
+ char *retry_on_http_error; /* Treat given HTTP errors as non-fatal. */
+ bool background; /* Whether we should work in background. */
+ bool ignore_length; /* Do we heed content-length at all? */
+ bool recursive; /* Are we recursive? */
+ bool spanhost; /* Do we span across hosts in
+ recursion? */
+ int max_redirect; /* Maximum number of times we'll allow
+ a page to redirect. */
+ bool relative_only; /* Follow only relative links. */
+ bool no_parent; /* Restrict access to the parent
+ directory. */
+ int reclevel; /* Maximum level of recursion */
+ bool dirstruct; /* Do we build the directory structure
+ as we go along? */
+ bool no_dirstruct; /* Do we hate dirstruct? */
+ int cut_dirs; /* Number of directory components to cut. */
+ bool add_hostdir; /* Do we add hostname directory? */
+ bool protocol_directories; /* Whether to prepend "http"/"ftp" to dirs. */
+ bool noclobber; /* Disables clobbering of existing data. */
+ bool unlink_requested; /* remove file before clobbering */
+ char *dir_prefix; /* The top of directory tree */
+ char *lfilename; /* Log filename */
+ char *input_filename; /* Input filename */
+#ifdef HAVE_METALINK
+ char *input_metalink; /* Input metalink file */
+ int metalink_index; /* Metalink application/metalink4+xml metaurl ordinal number. */
+ bool metalink_over_http; /* Use Metalink if present in HTTP response */
+ char *preferred_location; /* Preferred location for Metalink resources */
+#endif
+ char *choose_config; /* Specified config file */
+ bool noconfig; /* Ignore all config files? */
+ bool force_html; /* Is the input file an HTML file? */
+
+ char *default_page; /* Alternative default page (index file) */
+
+ bool spider; /* Is Wget in spider mode? */
+
+ char **accepts; /* List of patterns to accept. */
+ char **rejects; /* List of patterns to reject. */
+ const char **excludes; /* List of excluded FTP directories. */
+ const char **includes; /* List of FTP directories to
+ follow. */
+ bool ignore_case; /* Whether to ignore case when
+ matching dirs and files */
+
+ char *acceptregex_s; /* Patterns to accept (a regex string). */
+ char *rejectregex_s; /* Patterns to reject (a regex string). */
+ void *acceptregex; /* Patterns to accept (a regex struct). */
+ void *rejectregex; /* Patterns to reject (a regex struct). */
+ enum {
+#if defined HAVE_LIBPCRE || HAVE_LIBPCRE2
+ regex_type_pcre,
+#endif
+ regex_type_posix
+ } regex_type; /* The regex library. */
+ void *(*regex_compile_fun)(const char *); /* Function to compile a regex. */
+ bool (*regex_match_fun)(const void *, const char *); /* Function to match a string to a regex. */
+
+#ifdef HAVE_LIBCARES
+ char *bind_dns_address;
+ char *dns_servers;
+#endif
+
+ char **domains; /* See host.c */
+ char **exclude_domains;
+ bool dns_cache; /* whether we cache DNS lookups. */
+
+ char **follow_tags; /* List of HTML tags to recursively follow. */
+ char **ignore_tags; /* List of HTML tags to ignore if recursing. */
+
+ bool follow_ftp; /* Are FTP URL-s followed in recursive
+ retrieving? */
+ bool retr_symlinks; /* Whether we retrieve symlinks in
+ FTP. */
+ char *output_document; /* The output file to which the
+ documents will be printed. */
+ char *warc_filename; /* WARC output filename */
+ char *warc_tempdir; /* WARC temp dir */
+ char *warc_cdx_dedup_filename;/* CDX file to be used for deduplication. */
+ wgint warc_maxsize; /* WARC max archive size */
+ bool warc_compression_enabled;/* For GZIP compression. */
+ bool warc_digests_enabled; /* For SHA1 digests. */
+ bool warc_cdx_enabled; /* Create CDX files? */
+ bool warc_keep_log; /* Store the log file in a WARC record. */
+ char **warc_user_headers; /* User-defined WARC header(s). */
+
+ bool enable_xattr; /* Store metadata in POSIX extended attributes. */
+
+ char *user; /* Generic username */
+ char *passwd; /* Generic password */
+ bool ask_passwd; /* Ask for password? */
+ char *use_askpass; /* value to use for use-askpass if WGET_ASKPASS is not set */
+
+ bool always_rest; /* Always use REST. */
+ wgint start_pos; /* Start position of a download. */
+ char *ftp_user; /* FTP username */
+ char *ftp_passwd; /* FTP password */
+ bool netrc; /* Whether to read .netrc. */
+ bool ftp_glob; /* FTP globbing */
+ bool ftp_pasv; /* Passive FTP. */
+
+ char *http_user; /* HTTP username. */
+ char *http_passwd; /* HTTP password. */
+ char **user_headers; /* User-defined header(s). */
+ bool http_keep_alive; /* whether we use keep-alive */
+
+ bool use_proxy; /* Do we use proxy? */
+ bool allow_cache; /* Do we allow server-side caching? */
+ char *http_proxy, *ftp_proxy, *https_proxy;
+ char **no_proxy;
+ char *base_href;
+ char *progress_type; /* progress indicator type. */
+ int show_progress; /* Show only the progress bar */
+ bool noscroll; /* Don't scroll the filename in the progressbar */
+ char *proxy_user; /*oli*/
+ char *proxy_passwd;
+
+ double read_timeout; /* The read/write timeout. */
+ double dns_timeout; /* The DNS timeout. */
+ double connect_timeout; /* The connect timeout. */
+
+ bool random_wait; /* vary from 0 .. wait secs by random()? */
+ double wait; /* The wait period between retrievals. */
+ double waitretry; /* The wait period between retries. - HEH */
+ bool use_robots; /* Do we heed robots.txt? */
+
+ wgint limit_rate; /* Limit the download rate to this
+ many bps. */
+ SUM_SIZE_INT quota; /* Maximum file size to download and
+ store. */
+
+ bool server_response; /* Do we print server response? */
+ bool save_headers; /* Do we save headers together with
+ file? */
+ bool content_on_error; /* Do we output the content when the HTTP
+ status code indicates a server error */
+
+ bool debug; /* Debugging on/off */
+
+#ifdef USE_WATT32
+ bool wdebug; /* Watt-32 tcp/ip debugging on/off */
+#endif
+
+ bool timestamping; /* Whether to use time-stamping. */
+ bool if_modified_since; /* Whether to use conditional get requests. */
+
+ bool backup_converted; /* Do we save pre-converted files as *.orig? */
+ int backups; /* Are numeric backups made? */
+
+ char *useragent; /* User-Agent string, which can be set
+ to something other than Wget. */
+ char *referer; /* Naughty Referer, which can be
+ set to something other than
+ NULL. */
+ bool convert_links; /* Will the links be converted
+ locally? */
+ bool convert_file_only; /* Convert only the file portion of the URI (i.e. basename).
+ Leave everything else untouched. */
+
+ bool remove_listing; /* Do we remove .listing files
+ generated by FTP? */
+ bool htmlify; /* Do we HTML-ify the OS-dependent
+ listings? */
+
+ char *dot_style;
+ wgint dot_bytes; /* How many bytes in a printing
+ dot. */
+ int dots_in_line; /* How many dots in one line. */
+ int dot_spacing; /* How many dots between spacings. */
+
+ bool delete_after; /* Whether the files will be deleted
+ after download. */
+
+ bool adjust_extension; /* Use ".html" extension on all text/html? */
+
+ bool page_requisites; /* Whether we need to download all files
+ necessary to display a page properly. */
+ char *bind_address; /* What local IP address to bind to. */
+
+#ifdef HAVE_SSL
+ enum {
+ secure_protocol_auto,
+ secure_protocol_sslv2,
+ secure_protocol_sslv3,
+ secure_protocol_tlsv1,
+ secure_protocol_tlsv1_1,
+ secure_protocol_tlsv1_2,
+ secure_protocol_tlsv1_3,
+ secure_protocol_pfs
+ } secure_protocol; /* type of secure protocol to use. */
+ int check_cert; /* whether to validate the server's cert */
+ char *cert_file; /* external client certificate to use. */
+ char *private_key; /* private key file (if not internal). */
+ enum keyfile_type {
+ keyfile_pem,
+ keyfile_asn1
+ } cert_type; /* type of client certificate file */
+ enum keyfile_type
+ private_key_type; /* type of private key file */
+
+ char *ca_directory; /* CA directory (hash files) */
+ char *ca_cert; /* CA certificate file to use */
+ char *crl_file; /* file with CRLs */
+
+ char *pinnedpubkey; /* Public key (PEM/DER) file, or any number
+ of base64 encoded sha256 hashes preceded by
+ \'sha256//\' and separated by \';\', to verify
+ peer against */
+
+ char *random_file; /* file with random data to seed the PRNG */
+ char *egd_file; /* file name of the egd daemon socket */
+ bool https_only; /* whether to follow HTTPS only */
+ bool ftps_resume_ssl;
+ bool ftps_fallback_to_ftp;
+ bool ftps_implicit;
+ bool ftps_clear_data_connection;
+
+ char *tls_ciphers_string;
+#endif /* HAVE_SSL */
+
+ bool cookies; /* whether cookies are used. */
+ char *cookies_input; /* file we're loading the cookies from. */
+ char *cookies_output; /* file we're saving the cookies to. */
+ bool keep_badhash; /* Keep files with checksum mismatch. */
+ bool keep_session_cookies; /* whether session cookies should be
+ saved and loaded. */
+
+ char *post_data; /* POST query string */
+ char *post_file_name; /* File to post */
+ char *method; /* HTTP Method to use in Header */
+ char *body_data; /* HTTP Method Data String */
+ char *body_file; /* HTTP Method File */
+
+ enum {
+ restrict_unix,
+ restrict_vms,
+ restrict_windows
+ } restrict_files_os; /* file name restriction ruleset. */
+ bool restrict_files_ctrl; /* non-zero if control chars in URLs
+ are restricted from appearing in
+ generated file names. */
+ bool restrict_files_nonascii; /* non-zero if bytes with values greater
+ than 127 are restricted. */
+ enum {
+ restrict_no_case_restriction,
+ restrict_lowercase,
+ restrict_uppercase
+ } restrict_files_case; /* file name case restriction. */
+
+ bool strict_comments; /* whether strict SGML comments are
+ enforced. */
+
+ bool preserve_perm; /* whether remote permissions are used
+ or that what is set by umask. */
+
+#ifdef ENABLE_IPV6
+ bool ipv4_only; /* IPv4 connections have been requested. */
+ bool ipv6_only; /* IPv4 connections have been requested. */
+#endif
+ enum {
+ prefer_ipv4,
+ prefer_ipv6,
+ prefer_none
+ } prefer_family; /* preferred address family when more
+ than one type is available */
+
+ bool content_disposition; /* Honor HTTP Content-Disposition header. */
+ bool auth_without_challenge; /* Issue Basic authentication creds without
+ waiting for a challenge. */
+
+ bool enable_iri;
+ char *encoding_remote;
+ const char *locale;
+
+ bool trustservernames;
+#ifdef __VMS
+ int ftp_stmlf; /* Force Stream_LF format for binary FTP. */
+#endif /* def __VMS */
+
+ bool useservertimestamps; /* Update downloaded files' timestamps to
+ match those on server? */
+
+ bool show_all_dns_entries; /* Show all the DNS entries when resolving a
+ name. */
+ bool report_bps; /*Output bandwidth in bits format*/
+
+#ifdef HAVE_LIBZ
+ enum compression_options {
+ compression_auto,
+ compression_gzip,
+ compression_none
+ } compression; /* type of HTTP compression to use */
+#endif
+
+ char *rejected_log; /* The file to log rejected URLS to. */
+
+#ifdef HAVE_HSTS
+ bool hsts;
+ char *hsts_file;
+#endif
+
+ const char *homedir; /* the homedir of the running process */
+ const char *wgetrcfile; /* the wgetrc file to be loaded */
+};
+
+extern struct options opt;
diff --git a/src/progress.c b/src/progress.c
new file mode 100644
index 0000000..d8b57e3
--- /dev/null
+++ b/src/progress.c
@@ -0,0 +1,1462 @@
+/* Download progress.
+ Copyright (C) 2001-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <unistd.h>
+#include <signal.h>
+#include <wchar.h>
+#include <mbiter.h>
+
+#include "progress.h"
+#include "utils.h"
+#include "retr.h"
+#include "c-strcase.h"
+
+struct progress_implementation {
+ const char *name;
+ bool interactive;
+ void *(*create) (const char *, wgint, wgint);
+ void (*update) (void *, wgint, double);
+ void (*draw) (void *);
+ void (*finish) (void *, double);
+ void (*set_params) (const char *);
+};
+
+/* Necessary forward declarations. */
+
+static void *dot_create (const char *, wgint, wgint);
+static void dot_update (void *, wgint, double);
+static void dot_finish (void *, double);
+static void dot_draw (void *);
+static void dot_set_params (const char *);
+
+static void *bar_create (const char *, wgint, wgint);
+static void bar_update (void *, wgint, double);
+static void bar_draw (void *);
+static void bar_finish (void *, double);
+static void bar_set_params (const char *);
+
+static struct progress_implementation implementations[] = {
+ { "dot", 0, dot_create, dot_update, dot_draw, dot_finish, dot_set_params },
+ { "bar", 1, bar_create, bar_update, bar_draw, bar_finish, bar_set_params }
+};
+static struct progress_implementation *current_impl;
+static int current_impl_locked;
+
+/* Progress implementation used by default. Can be overridden in
+ wgetrc or by the fallback one. */
+
+#define DEFAULT_PROGRESS_IMPLEMENTATION "bar"
+
+/* Fallback progress implementation should be something that works
+ under all display types. If you put something other than "dot"
+ here, remember that bar_set_params tries to switch to this if we're
+ not running on a TTY. So changing this to "bar" could cause
+ infloop. */
+
+#define FALLBACK_PROGRESS_IMPLEMENTATION "dot"
+
+/* Return true if NAME names a valid progress bar implementation. The
+ characters after the first : will be ignored. */
+
+bool
+valid_progress_implementation_p (const char *name)
+{
+ size_t i;
+ struct progress_implementation *pi = implementations;
+ char *colon = strchr (name, ':');
+ size_t namelen = colon ? (size_t) (colon - name) : strlen (name);
+
+ for (i = 0; i < countof (implementations); i++, pi++)
+ if (!strncmp (pi->name, name, namelen))
+ return true;
+ return false;
+}
+
+/* Set the progress implementation to NAME. */
+
+void
+set_progress_implementation (const char *name)
+{
+ size_t i, namelen;
+ struct progress_implementation *pi = implementations;
+ const char *colon;
+
+ if (!name)
+ name = DEFAULT_PROGRESS_IMPLEMENTATION;
+
+ colon = strchr (name, ':');
+ namelen = colon ? (size_t) (colon - name) : strlen (name);
+
+ for (i = 0; i < countof (implementations); i++, pi++)
+ if (!strncmp (pi->name, name, namelen))
+ {
+ current_impl = pi;
+ current_impl_locked = 0;
+
+ if (colon)
+ /* We call pi->set_params even if colon is NULL because we
+ want to give the implementation a chance to set up some
+ things it needs to run. */
+ ++colon;
+
+ if (pi->set_params)
+ pi->set_params (colon);
+ return;
+ }
+ abort ();
+}
+
+static int output_redirected;
+
+void
+progress_schedule_redirect (void)
+{
+ output_redirected = 1;
+}
+
+/* Create a progress gauge. INITIAL is the number of bytes the
+ download starts from (zero if the download starts from scratch).
+ TOTAL is the expected total number of bytes in this download. If
+ TOTAL is zero, it means that the download size is not known in
+ advance. */
+
+void *
+progress_create (const char *f_download, wgint initial, wgint total)
+{
+ /* Check if the log status has changed under our feet. */
+ if (output_redirected)
+ {
+ if (!current_impl_locked)
+ set_progress_implementation (FALLBACK_PROGRESS_IMPLEMENTATION);
+ output_redirected = 0;
+ }
+
+ return current_impl->create (f_download, initial, total);
+}
+
+/* Return true if the progress gauge is "interactive", i.e. if it can
+ profit from being called regularly even in absence of data. The
+ progress bar is interactive because it regularly updates the ETA
+ and current update. */
+
+bool
+progress_interactive_p (void *progress _GL_UNUSED)
+{
+ return current_impl->interactive;
+}
+
+/* Inform the progress gauge of newly received bytes. DLTIME is the
+ time since the beginning of the download. */
+
+void
+progress_update (void *progress, wgint howmuch, double dltime)
+{
+ // sanitize input
+ if (dltime >= INT_MAX)
+ dltime = INT_MAX - 1;
+ else if (dltime < 0)
+ dltime = 0;
+
+ if (howmuch < 0)
+ howmuch = 0;
+
+ current_impl->update (progress, howmuch, dltime);
+ current_impl->draw (progress);
+}
+
+/* Tell the progress gauge to clean up. Calling this will free the
+ PROGRESS object, the further use of which is not allowed. */
+
+void
+progress_finish (void *progress, double dltime)
+{
+ // sanitize input
+ if (dltime >= INT_MAX)
+ dltime = INT_MAX - 1;
+ else if (dltime < 0)
+ dltime = 0;
+
+ current_impl->finish (progress, dltime);
+}
+
+/* Dot-printing. */
+
+struct dot_progress {
+ wgint initial_length; /* how many bytes have been downloaded
+ previously. */
+ wgint total_length; /* expected total byte count when the
+ download finishes */
+
+ wgint accumulated; /* number of bytes accumulated after
+ the last printed dot */
+
+ double dltime; /* download time so far */
+ wgint rows; /* number of rows printed so far */
+ int dots; /* number of dots printed in this row */
+
+ double last_timer_value;
+};
+
+/* Dot-progress backend for progress_create. */
+
+static void *
+dot_create (const char *f_download _GL_UNUSED, wgint initial, wgint total)
+{
+ struct dot_progress *dp = xnew0 (struct dot_progress);
+ dp->initial_length = initial;
+ dp->total_length = total;
+
+ if (dp->initial_length)
+ {
+ int dot_bytes = opt.dot_bytes;
+ const wgint ROW_BYTES = opt.dot_bytes * opt.dots_in_line;
+
+ int remainder = dp->initial_length % ROW_BYTES;
+ wgint skipped = dp->initial_length - remainder;
+
+ if (skipped)
+ {
+ wgint skipped_k = skipped / 1024; /* skipped amount in K */
+ int skipped_k_len = numdigit (skipped_k);
+ if (skipped_k_len < 6)
+ skipped_k_len = 6;
+
+ /* Align the [ skipping ... ] line with the dots. To do
+ that, insert the number of spaces equal to the number of
+ digits in the skipped amount in K. */
+ logprintf (LOG_PROGRESS, _("\n%*s[ skipping %sK ]"),
+ 2 + skipped_k_len, "",
+ number_to_static_string (skipped_k));
+ }
+
+ logprintf (LOG_PROGRESS, "\n%6sK",
+ number_to_static_string (skipped / 1024));
+ for (; remainder >= dot_bytes; remainder -= dot_bytes)
+ {
+ if (dp->dots % opt.dot_spacing == 0)
+ logputs (LOG_PROGRESS, " ");
+ logputs (LOG_PROGRESS, ",");
+ ++dp->dots;
+ }
+ assert (dp->dots < opt.dots_in_line);
+
+ dp->accumulated = remainder;
+ dp->rows = skipped / ROW_BYTES;
+ }
+
+ return dp;
+}
+
+static const char *eta_to_human_short (int, bool);
+
+/* ADD_DOT_ROWS_THRS - minimal (1 << ADD_DOT_ROWS_THRS) ROWS to be added
+ to the current row if dp->accumulated too much.
+ Allows to reduce dot_draw io, times.
+ According to the way progress_update is currently has being called, this
+ should happens only when fuzzing, or (paranoia) if somehow buffer will
+ be too large.
+ Can be disabled by default if this is not fuzzing build. */
+#ifndef ADD_DOT_ROWS_THRS
+#if FUZZING
+#define ADD_DOT_ROWS_THRS 2
+#else
+#define ADD_DOT_ROWS_THRS 2
+#endif
+#endif /* ADD_DOT_ROWS_THRS */
+
+/* Prints the stats (percentage of completion, speed, ETA) for current
+ row. DLTIME is the time spent downloading the data in current
+ row.
+
+ #### This function is somewhat uglified by the fact that current
+ row and last row have somewhat different stats requirements. It
+ might be worthwhile to split it to two different functions. */
+
+static void
+#if ADD_DOT_ROWS_THRS
+print_row_stats (struct dot_progress *dp, double dltime, bool last, wgint added_rows)
+#else
+print_row_stats (struct dot_progress *dp, double dltime, bool last)
+#endif
+{
+ const wgint ROW_BYTES = opt.dot_bytes * opt.dots_in_line;
+
+ /* bytes_displayed is the number of bytes indicated to the user by
+ dots printed so far, includes the initially "skipped" amount */
+ wgint bytes_displayed = dp->rows * ROW_BYTES + dp->dots * opt.dot_bytes;
+
+ if (last)
+ /* For last row also count bytes accumulated after last dot */
+ bytes_displayed += dp->accumulated;
+
+ if (bytes_displayed < 0)
+ bytes_displayed = 0;
+
+ if (dp->total_length)
+ {
+ /* Round to floor value to provide gauge how much data *has*
+ been retrieved. 12.8% will round to 12% because the 13% mark
+ has not yet been reached. 100% is only shown when done. */
+ int percentage = 100.0 * bytes_displayed / dp->total_length;
+ logprintf (LOG_PROGRESS, "%3d%%", percentage);
+ }
+
+ {
+ static char names[] = {' ', 'K', 'M', 'G', 'T'};
+ int units;
+ double rate;
+ wgint bytes_this_row;
+ if (!last)
+#if ADD_DOT_ROWS_THRS
+ bytes_this_row = ROW_BYTES * added_rows;
+#else
+ bytes_this_row = ROW_BYTES;
+#endif
+ else
+ /* For last row also include bytes accumulated after last dot. */
+ bytes_this_row = dp->dots * opt.dot_bytes + dp->accumulated;
+ /* Don't count the portion of the row belonging to initial_length */
+ if (dp->rows == dp->initial_length / ROW_BYTES)
+ bytes_this_row -= dp->initial_length % ROW_BYTES;
+ rate = calc_rate (bytes_this_row, dltime - dp->last_timer_value, &units);
+ logprintf (LOG_PROGRESS, " %4.*f%c",
+ rate >= 99.95 ? 0 : rate >= 9.995 ? 1 : 2,
+ rate, names[units]);
+ dp->last_timer_value = dltime;
+ }
+
+ if (!last)
+ {
+ /* Display ETA based on average speed. Inspired by Vladi
+ Belperchinov-Shabanski's "wget-new-percentage" patch. */
+ if (dp->total_length)
+ {
+ wgint bytes_remaining = dp->total_length > bytes_displayed ? dp->total_length - bytes_displayed : 0;
+ /* The quantity downloaded in this download run. */
+ wgint bytes_sofar = bytes_displayed > dp->initial_length ? bytes_displayed - dp->initial_length : 1;
+ double eta = dltime * bytes_remaining / bytes_sofar;
+ if (eta < 0)
+ eta = 0;
+ if (eta < INT_MAX - 1)
+ logprintf (LOG_PROGRESS, " %s",
+ eta_to_human_short ((int) (eta + 0.5), true));
+ }
+ }
+ else
+ {
+ /* When done, print the total download time */
+ if (dltime >= 10)
+ logprintf (LOG_PROGRESS, "=%s",
+ eta_to_human_short ((int) (dltime + 0.5), true));
+ else
+ logprintf (LOG_PROGRESS, "=%ss", print_decimal (dltime));
+ }
+}
+
+/* Dot-progress backend for progress_update. */
+
+static void
+dot_update (void *progress, wgint howmuch, double dltime)
+{
+ // sanitize input
+ if (dltime >= INT_MAX)
+ dltime = INT_MAX - 1;
+ else if (dltime < 0)
+ dltime = 0;
+
+ if (howmuch < 0)
+ howmuch = 0;
+
+ struct dot_progress *dp = progress;
+ dp->accumulated += howmuch;
+ dp->dltime = dltime;
+}
+
+static void
+dot_draw (void *progress)
+{
+ struct dot_progress *dp = progress;
+ int dot_bytes = opt.dot_bytes;
+ wgint ROW_BYTES = opt.dot_bytes * opt.dots_in_line;
+
+ log_set_flush (false);
+
+ while (dp->accumulated >= dot_bytes)
+ {
+ dp->accumulated -= dot_bytes;
+ if (dp->dots == 0)
+ logprintf (LOG_PROGRESS, "\n%6sK",
+ number_to_static_string (dp->rows * ROW_BYTES / 1024));
+
+ if (dp->dots % opt.dot_spacing == 0)
+ logputs (LOG_PROGRESS, " ");
+ logputs (LOG_PROGRESS, ".");
+
+ ++dp->dots;
+ if (dp->dots >= opt.dots_in_line)
+ {
+ dp->dots = 0;
+#if ADD_DOT_ROWS_THRS
+ {
+ wgint added_rows = 1;
+ if (dp->accumulated >= (ROW_BYTES << ADD_DOT_ROWS_THRS))
+ {
+ added_rows += dp->accumulated / ROW_BYTES;
+ dp->accumulated %= ROW_BYTES;
+ }
+ if (WGINT_MAX - dp->rows >= added_rows)
+ dp->rows += added_rows;
+ else
+ dp->rows = WGINT_MAX;
+ print_row_stats (dp, dp->dltime, false, added_rows);
+ }
+#else
+ if (dp->rows < WGINT_MAX)
+ ++dp->rows;
+ print_row_stats (dp, dp->dltime, false);
+#endif /* ADD_DOT_ROWS_THRS */
+ }
+ }
+
+ log_set_flush (true);
+}
+
+/* Dot-progress backend for progress_finish. */
+
+static void
+dot_finish (void *progress, double dltime)
+{
+ struct dot_progress *dp = progress;
+ wgint ROW_BYTES = opt.dot_bytes * opt.dots_in_line;
+ int i;
+
+ log_set_flush (false);
+
+ if (dp->dots == 0)
+ logprintf (LOG_PROGRESS, "\n%6sK",
+ number_to_static_string (dp->rows * ROW_BYTES / 1024));
+ for (i = dp->dots; i < opt.dots_in_line; i++)
+ {
+ if (i % opt.dot_spacing == 0)
+ logputs (LOG_PROGRESS, " ");
+ logputs (LOG_PROGRESS, " ");
+ }
+
+ // sanitize input
+ if (dltime >= INT_MAX)
+ dltime = INT_MAX - 1;
+ else if (dltime < 0)
+ dltime = 0;
+#if ADD_DOT_ROWS_THRS
+ print_row_stats (dp, dltime, true, 1);
+#else
+ print_row_stats (dp, dltime, true);
+#endif
+ logputs (LOG_VERBOSE, "\n\n");
+ log_set_flush (false);
+
+ xfree (dp);
+}
+
+/* This function interprets the progress "parameters". For example,
+ if Wget is invoked with --progress=dot:mega, it will set the
+ "dot-style" to "mega". Valid styles are default, binary, mega, and
+ giga. */
+
+static void
+dot_set_params (const char *params)
+{
+ current_impl->interactive = false;
+ if (!params || !*params)
+ params = opt.dot_style;
+
+ if (!params)
+ return;
+
+ /* We use this to set the retrieval style. */
+ if (!c_strcasecmp (params, "default"))
+ {
+ /* Default style: 1K dots, 10 dots in a cluster, 50 dots in a
+ line. */
+ opt.dot_bytes = 1024;
+ opt.dot_spacing = 10;
+ opt.dots_in_line = 50;
+ }
+ else if (!c_strcasecmp (params, "binary"))
+ {
+ /* "Binary" retrieval: 8K dots, 16 dots in a cluster, 48 dots
+ (384K) in a line. */
+ opt.dot_bytes = 8192;
+ opt.dot_spacing = 16;
+ opt.dots_in_line = 48;
+ }
+ else if (!c_strcasecmp (params, "mega"))
+ {
+ /* "Mega" retrieval, for retrieving very long files; each dot is
+ 64K, 8 dots in a cluster, 6 clusters (3M) in a line. */
+ opt.dot_bytes = 65536L;
+ opt.dot_spacing = 8;
+ opt.dots_in_line = 48;
+ }
+ else if (!c_strcasecmp (params, "giga"))
+ {
+ /* "Giga" retrieval, for retrieving very very *very* long files;
+ each dot is 1M, 8 dots in a cluster, 4 clusters (32M) in a
+ line. */
+ opt.dot_bytes = (1L << 20);
+ opt.dot_spacing = 8;
+ opt.dots_in_line = 32;
+ }
+ else
+ fprintf (stderr,
+ _("Invalid dot style specification %s; leaving unchanged.\n"),
+ quote (params));
+}
+
+/* "Thermometer" (bar) progress. */
+
+/* Assumed screen width if we can't find the real value. */
+#define DEFAULT_SCREEN_WIDTH 80
+
+/* Minimum screen width we'll try to work with. If this is too small,
+ create_image will overflow the buffer.
+ width = width/4 + 1 + PROGRESS_PERCENT_LEN + PROGRESS_FILESIZE_LEN
+ + PROGRESS_DWNLOAD_RATE + PROGRESS_ETA_LEN => widh = 38*4/3 (+1) */
+#define MINIMUM_SCREEN_WIDTH 51
+
+/* The last known screen width. This can be updated by the code that
+ detects that SIGWINCH was received (but it's never updated from the
+ signal handler). */
+static int screen_width;
+
+/* A flag that, when set, means SIGWINCH was received. */
+static volatile sig_atomic_t received_sigwinch;
+
+/* Size of the download speed history ring. */
+#define DLSPEED_HISTORY_SIZE 20
+
+/* The minimum time length of a history sample. By default, each
+ sample is at least 150ms long, which means that, over the course of
+ 20 samples, "current" download speed spans at least 3s into the
+ past. */
+#define DLSPEED_SAMPLE_MIN 0.15
+
+/* The time after which the download starts to be considered
+ "stalled", i.e. the current bandwidth is not printed and the recent
+ download speeds are scratched. */
+#define STALL_START_TIME 5
+
+/* Time between screen refreshes will not be shorter than this, so
+ that Wget doesn't swamp the TTY with output. */
+#define REFRESH_INTERVAL 0.2
+
+/* Don't refresh the ETA too often to avoid jerkiness in predictions.
+ This allows ETA to change approximately once per second. */
+#define ETA_REFRESH_INTERVAL 0.99
+
+struct bar_progress {
+ char *f_download; /* Filename of the downloaded file */
+ wgint initial_length; /* how many bytes have been downloaded
+ previously. */
+ wgint total_length; /* expected total byte count when the
+ download finishes */
+ wgint count; /* bytes downloaded so far */
+
+ double last_screen_update; /* time of the last screen update,
+ measured since the beginning of
+ download. */
+
+ double dltime; /* download time so far */
+ int width; /* screen width we're using at the
+ time the progress gauge was
+ created. this is different from
+ the screen_width global variable in
+ that the latter can be changed by a
+ signal. */
+ char *buffer; /* buffer where the bar "image" is
+ stored. */
+ int tick; /* counter used for drawing the
+ progress bar where the total size
+ is not known. */
+
+ /* The following variables (kept in a struct for namespace reasons)
+ keep track of recent download speeds. See bar_update() for
+ details. */
+ struct bar_progress_hist {
+ int pos;
+ double times[DLSPEED_HISTORY_SIZE];
+ wgint bytes[DLSPEED_HISTORY_SIZE];
+
+ /* The sum of times and bytes respectively, maintained for
+ efficiency. */
+ double total_time;
+ wgint total_bytes;
+ } hist;
+
+ double recent_start; /* timestamp of beginning of current
+ position. */
+ wgint recent_bytes; /* bytes downloaded so far. */
+
+ bool stalled; /* set when no data arrives for longer
+ than STALL_START_TIME, then reset
+ when new data arrives. */
+
+ /* create_image() uses these to make sure that ETA information
+ doesn't flicker. */
+ double last_eta_time; /* time of the last update to download
+ speed and ETA, measured since the
+ beginning of download. */
+ int last_eta_value;
+};
+
+static void create_image (struct bar_progress *, double, bool);
+static void display_image (char *);
+
+#if USE_NLS_PROGRESS_BAR
+static size_t
+prepare_filename (char *dest, const char *src)
+{
+ size_t ret = 1;
+ if (src)
+ {
+ mbi_iterator_t iter;
+ mbchar_t mbc;
+ mbi_init (iter, src, strlen (src));
+ while (mbi_avail (iter))
+ {
+ size_t i;
+ mbc = mbi_cur(iter);
+ /* replace invalid || unprintable || zero-width mbc ws hexdgt code */
+ if (!mb_isprint (mbc) || !mb_width (mbc))
+ for (i=0; i < mb_len (mbc); i++)
+ {
+ if (dest)
+ dest += sprintf (dest, "%%%02x", (unsigned char) *(mb_ptr(mbc) + i));
+ ret += 3;
+ }
+ else
+ {
+ if (dest)
+ for (i=0; i < mb_len (mbc); i++)
+ *dest++ = *(mb_ptr (mbc) + i);
+ ret += mb_len (mbc);
+ }
+ mbi_advance (iter);
+ }
+ }
+ if (dest)
+ *dest = 0;
+ return ret;
+}
+#else
+#include <ctype.h>
+static size_t
+prepare_filename (char *dest, const char *src)
+{
+ size_t ret = 1;
+ if (src)
+ while (*src)
+ {
+ /* isprint with some lang return false for some chars */
+ if(!iscntrl (*src))
+ {
+ if (dest)
+ *dest++ = *src;
+ ret++;
+ }
+ else
+ {
+ if (dest)
+ dest += sprintf (dest, "%%%02x", (unsigned char) *src );
+ ret += 3;
+ }
+ src++;
+ }
+ if (dest)
+ *dest = 0;
+ return ret;
+}
+#endif /* USE_NLS_PROGRESS_BAR */
+
+static void *
+bar_create (const char *f_download, wgint initial, wgint total)
+{
+ struct bar_progress *bp = xnew0 (struct bar_progress);
+
+ /* In theory, our callers should take care of this pathological
+ case, but it can sometimes happen. */
+ if (initial > total)
+ total = initial;
+
+ bp->initial_length = initial;
+ bp->total_length = total;
+ /* Zero-width mbc must be replaced to avoid buffer overflow.
+ Another way is to allocate a buffer that allows contain
+ full f_download, but in this case some escape sequences may break "bar" */
+ bp->f_download = xmalloc (prepare_filename (NULL, f_download));
+ prepare_filename (bp->f_download, f_download);
+
+ /* Initialize screen_width if this hasn't been done or if it might
+ have changed, as indicated by receiving SIGWINCH. */
+ if (!screen_width || received_sigwinch)
+ {
+ screen_width = determine_screen_width ();
+ if (!screen_width)
+ screen_width = DEFAULT_SCREEN_WIDTH;
+ else if (screen_width < MINIMUM_SCREEN_WIDTH)
+ screen_width = MINIMUM_SCREEN_WIDTH;
+ received_sigwinch = 0;
+ }
+
+ /* - 1 because we don't want to use the last screen column. */
+ bp->width = screen_width - 1;
+ /* + enough space for the terminating zero, and hopefully enough room
+ * for multibyte characters. */
+#define BUF_LEN (bp->width * 2 + 100)
+ bp->buffer = xcalloc (BUF_LEN, 1);
+
+ logputs (LOG_VERBOSE, "\n");
+
+ create_image (bp, 0, false);
+ display_image (bp->buffer);
+
+ return bp;
+}
+
+static void update_speed_ring (struct bar_progress *, wgint, double);
+
+static void
+bar_update (void *progress, wgint howmuch, double dltime)
+{
+ struct bar_progress *bp = progress;
+
+ bp->dltime = dltime;
+ if (WGINT_MAX - (bp->count + bp->initial_length) >= howmuch)
+ bp->count += howmuch;
+ else
+ bp->count = WGINT_MAX - bp->initial_length;
+ if (bp->total_length > 0
+ && bp->count + bp->initial_length > bp->total_length)
+ /* We could be downloading more than total_length, e.g. when the
+ server sends an incorrect Content-Length header. In that case,
+ adjust bp->total_length to the new reality, so that the code in
+ create_image() that depends on total size being smaller or
+ equal to the expected size doesn't abort. */
+ bp->total_length = bp->initial_length + bp->count;
+
+ update_speed_ring (bp, howmuch, dltime);
+}
+
+static void
+bar_draw (void *progress)
+{
+ bool force_screen_update = false;
+ struct bar_progress *bp = progress;
+
+ /* If SIGWINCH (the window size change signal) been received,
+ determine the new screen size and update the screen. */
+ if (received_sigwinch)
+ {
+ int old_width = screen_width;
+ screen_width = determine_screen_width ();
+ if (!screen_width)
+ screen_width = DEFAULT_SCREEN_WIDTH;
+ else if (screen_width < MINIMUM_SCREEN_WIDTH)
+ screen_width = MINIMUM_SCREEN_WIDTH;
+ if (screen_width != old_width)
+ {
+ bp->width = screen_width - 1;
+ bp->buffer = xrealloc (bp->buffer, BUF_LEN);
+ force_screen_update = true;
+ }
+ received_sigwinch = 0;
+ }
+
+ if (bp->dltime - bp->last_screen_update < REFRESH_INTERVAL && !force_screen_update)
+ /* Don't update more often than five times per second. */
+ return;
+
+ create_image (bp, bp->dltime, false);
+ display_image (bp->buffer);
+ bp->last_screen_update = bp->dltime;
+}
+
+static void
+bar_finish (void *progress, double dltime)
+{
+ struct bar_progress *bp = progress;
+
+ if (bp->total_length > 0
+ && bp->count + bp->initial_length > bp->total_length)
+ /* See bar_update() for explanation. */
+ bp->total_length = bp->initial_length + bp->count;
+
+ create_image (bp, dltime, true);
+ display_image (bp->buffer);
+
+ logputs (LOG_VERBOSE, "\n");
+ logputs (LOG_PROGRESS, "\n");
+
+ xfree (bp->f_download);
+ xfree (bp->buffer);
+ xfree (bp);
+}
+
+/* This code attempts to maintain the notion of a "current" download
+ speed, over the course of no less than 3s. (Shorter intervals
+ produce very erratic results.)
+
+ To do so, it samples the speed in 150ms intervals and stores the
+ recorded samples in a FIFO history ring. The ring stores no more
+ than 20 intervals, hence the history covers the period of at least
+ three seconds and at most 20 reads into the past. This method
+ should produce reasonable results for downloads ranging from very
+ slow to very fast.
+
+ The idea is that for fast downloads, we get the speed over exactly
+ the last three seconds. For slow downloads (where a network read
+ takes more than 150ms to complete), we get the speed over a larger
+ time period, as large as it takes to complete twenty reads. This
+ is good because slow downloads tend to fluctuate more and a
+ 3-second average would be too erratic. */
+
+static void
+update_speed_ring (struct bar_progress *bp, wgint howmuch, double dltime)
+{
+ struct bar_progress_hist *hist = &bp->hist;
+ double recent_age = dltime - bp->recent_start;
+
+ /* Update the download count. */
+ bp->recent_bytes += howmuch;
+
+ /* For very small time intervals, we return after having updated the
+ "recent" download count. When its age reaches or exceeds minimum
+ sample time, it will be recorded in the history ring. */
+ if (recent_age < DLSPEED_SAMPLE_MIN)
+ return;
+
+ if (howmuch == 0)
+ {
+ /* If we're not downloading anything, we might be stalling,
+ i.e. not downloading anything for an extended period of time.
+ Since 0-reads do not enter the history ring, recent_age
+ effectively measures the time since last read. */
+ if (recent_age >= STALL_START_TIME)
+ {
+ /* If we're stalling, reset the ring contents because it's
+ stale and because it will make bar_update stop printing
+ the (bogus) current bandwidth. */
+ bp->stalled = true;
+ xzero (*hist);
+ bp->recent_bytes = 0;
+ }
+ return;
+ }
+
+ /* We now have a non-zero amount of to store to the speed ring. */
+
+ /* If the stall status was acquired, reset it. */
+ if (bp->stalled)
+ {
+ bp->stalled = false;
+ /* "recent_age" includes the entire stalled period, which
+ could be very long. Don't update the speed ring with that
+ value because the current bandwidth would start too small.
+ Start with an arbitrary (but more reasonable) time value and
+ let it level out. */
+ recent_age = 1;
+ }
+
+ /* Store "recent" bytes and download time to history ring at the
+ position POS. */
+
+ /* To correctly maintain the totals, first invalidate existing data
+ (least recent in time) at this position. */
+ hist->total_time -= hist->times[hist->pos];
+ hist->total_bytes -= hist->bytes[hist->pos];
+
+ /* Now store the new data and update the totals. */
+ hist->times[hist->pos] = recent_age;
+ hist->bytes[hist->pos] = bp->recent_bytes;
+ hist->total_time += recent_age;
+ hist->total_bytes += bp->recent_bytes;
+
+ /* Start a new "recent" period. */
+ bp->recent_start = dltime;
+ bp->recent_bytes = 0;
+
+ /* Advance the current ring position. */
+ if (++hist->pos == DLSPEED_HISTORY_SIZE)
+ hist->pos = 0;
+
+#if 0
+ /* Sledgehammer check to verify that the totals are accurate. */
+ {
+ int i;
+ double sumt = 0, sumb = 0;
+ for (i = 0; i < DLSPEED_HISTORY_SIZE; i++)
+ {
+ sumt += hist->times[i];
+ sumb += hist->bytes[i];
+ }
+ assert (sumb == hist->total_bytes);
+ /* We can't use assert(sumt==hist->total_time) because some
+ precision is lost by adding and subtracting floating-point
+ numbers. But during a download this precision should not be
+ detectable, i.e. no larger than 1ns. */
+ double diff = sumt - hist->total_time;
+ if (diff < 0) diff = -diff;
+ assert (diff < 1e-9);
+ }
+#endif
+}
+
+#if USE_NLS_PROGRESS_BAR
+static int
+count_cols (const char *mbs)
+{
+ mbchar_t mbc;
+ mbi_iterator_t iter;
+ int cols = 0;
+ mbi_init (iter, mbs, strlen(mbs));
+ while (mbi_avail (iter))
+ {
+ mbc = mbi_cur (iter);
+ cols += mb_width (mbc);
+ mbi_advance (iter);
+ }
+ return cols;
+}
+
+static int
+cols_to_bytes (const char *mbs, const int cols, int *ncols)
+{
+ int p_cols = 0, bytes = 0;
+ mbchar_t mbc;
+ mbi_iterator_t iter;
+ mbi_init (iter, mbs, strlen(mbs));
+ while (p_cols < cols && mbi_avail (iter))
+ {
+ mbc = mbi_cur (iter);
+ p_cols += mb_width (mbc);
+ /* The multibyte character has exceeded the total number of columns we
+ * have available. The remaining bytes will be padded with a space. */
+ if (p_cols > cols)
+ {
+ p_cols -= mb_width (mbc);
+ break;
+ }
+ bytes += mb_len (mbc);
+ mbi_advance (iter);
+ }
+ *ncols = p_cols;
+ return bytes;
+}
+#else
+static int count_cols (const char *mbs) { return (int) strlen(mbs); }
+
+static int
+cols_to_bytes (const char *mbs, const int cols, int *ncols)
+{
+ int len = strlen(mbs);
+ int ret = len < cols ? len : cols;
+ *ncols = ret;
+ return ret;
+}
+#endif
+
+static const char *
+get_eta (int *bcd)
+{
+ /* TRANSLATORS: "ETA" is English-centric, but this must
+ be short, ideally 3 chars. Abbreviate if necessary. */
+ static const char eta_str[] = N_(" eta %s");
+ static const char *eta_trans;
+ static int bytes_cols_diff;
+ if (eta_trans == NULL)
+ {
+ int nbytes;
+ int ncols;
+
+#if USE_NLS_PROGRESS_BAR
+ eta_trans = _(eta_str);
+#else
+ eta_trans = eta_str;
+#endif
+
+ /* Determine the number of bytes used in the translated string,
+ * versus the number of columns used. This is to figure out how
+ * many spaces to add at the end to pad to the full line width.
+ *
+ * We'll store the difference between the number of bytes and
+ * number of columns, so that removing this from the string length
+ * will reveal the total number of columns in the progress bar. */
+ nbytes = strlen (eta_trans);
+ ncols = count_cols (eta_trans);
+ bytes_cols_diff = nbytes - ncols;
+ }
+
+ if (bcd != NULL)
+ *bcd = bytes_cols_diff;
+
+ return eta_trans;
+}
+
+#define APPEND_LITERAL(s) do { \
+ memcpy (p, s, sizeof (s) - 1); \
+ p += sizeof (s) - 1; \
+} while (0)
+
+static void
+create_image (struct bar_progress *bp, double dl_total_time, bool done)
+{
+ const int MAX_FILENAME_COLS = bp->width / 4;
+ char *p = bp->buffer;
+ wgint size = bp->initial_length + bp->count;
+
+ struct bar_progress_hist *hist = &bp->hist;
+ int orig_filename_cols = count_cols (bp->f_download);
+
+ int padding;
+
+ /* The progress bar should look like this:
+ file xx% [=======> ] nnn.nnK 12.34KB/s eta 36m 51s
+
+ Calculate the geometry. The idea is to assign as much room as
+ possible to the progress bar. The other idea is to never let
+ things "jitter", i.e. pad elements that vary in size so that
+ their variance does not affect the placement of other elements.
+ It would be especially bad for the progress bar to be resized
+ randomly.
+
+ "file " - Downloaded filename - MAX_FILENAME_COLS chars + 1
+ "xx% " or "100%" - percentage - 4 chars
+ "[]" - progress bar decorations - 2 chars
+ " nnn.nnK" - downloaded bytes - 7 chars + 1
+ " 12.5KB/s" - download rate - 8 chars + 1
+ " eta 36m 51s" - ETA - 14 chars
+
+ "=====>..." - progress bar - the rest
+ */
+
+ /* TODO: Ask the Turkish Translators to fix their translation for the "done"
+ * mode of progress bar. Use one less character. Once that is done, redice
+ * PROGRESS_ETA_LEN by 1.
+ */
+#define PROGRESS_FILENAME_LEN MAX_FILENAME_COLS + 1
+#define PROGRESS_PERCENT_LEN 4
+#define PROGRESS_DECORAT_LEN 2
+#define PROGRESS_FILESIZE_LEN 7 + 1
+#define PROGRESS_DWNLOAD_RATE 8 + 2
+#define PROGRESS_ETA_LEN 15
+
+ int progress_size = bp->width - (PROGRESS_FILENAME_LEN + PROGRESS_PERCENT_LEN +
+ PROGRESS_DECORAT_LEN + PROGRESS_FILESIZE_LEN +
+ PROGRESS_DWNLOAD_RATE + PROGRESS_ETA_LEN);
+
+ /* The difference between the number of bytes used,
+ and the number of columns used. */
+ int bytes_cols_diff = 0;
+ int cols_diff;
+ const char *down_size;
+
+ if (progress_size < 5)
+ progress_size = 0;
+
+ // sanitize input
+ if (dl_total_time >= INT_MAX)
+ dl_total_time = INT_MAX - 1;
+ else if (dl_total_time < 0)
+ dl_total_time = 0;
+
+ if (orig_filename_cols < MAX_FILENAME_COLS)
+ {
+ p += sprintf (p, "%s", bp->f_download);
+ padding = MAX_FILENAME_COLS - orig_filename_cols + 1;
+ memset (p, ' ', padding);
+ p += padding;
+ }
+ else
+ {
+/*
+ memcpy(p, bp->f_download, MAX_FILENAME_COLS);
+ p += MAX_FILENAME_COLS;
+ *p++ = ' ';
+ }
+*/
+ int offset_cols;
+ int bytes_in_filename, offset_bytes, col;
+ int *cols_ret = &col;
+
+#define MIN_SCROLL_TEXT 5
+ if ((orig_filename_cols > MAX_FILENAME_COLS + MIN_SCROLL_TEXT) &&
+ !opt.noscroll &&
+ !done)
+ {
+ offset_cols = ((int) bp->tick + orig_filename_cols + MAX_FILENAME_COLS / 2)
+ % (orig_filename_cols + MAX_FILENAME_COLS);
+ if (offset_cols > orig_filename_cols)
+ {
+ padding = MAX_FILENAME_COLS - (offset_cols - orig_filename_cols);
+ memset(p, ' ', padding);
+ p += padding;
+ offset_cols = 0;
+ }
+ else
+ padding = 0;
+ }
+ else
+ {
+ padding = 0;
+ offset_cols = 0;
+ }
+ offset_bytes = cols_to_bytes (bp->f_download, offset_cols, cols_ret);
+ bytes_in_filename = cols_to_bytes (bp->f_download + offset_bytes,
+ MAX_FILENAME_COLS - padding,
+ cols_ret);
+ memcpy (p, bp->f_download + offset_bytes, bytes_in_filename);
+ p += bytes_in_filename;
+ padding = MAX_FILENAME_COLS - (padding + *cols_ret);
+ memset (p, ' ', padding + 1);
+ p += padding + 1;
+ }
+
+
+ /* "xx% " */
+ if (bp->total_length > 0)
+ {
+ int percentage = 100.0 * size / bp->total_length;
+ assert (percentage <= 100);
+ p += sprintf (p, "%3d%%", percentage);
+ }
+ else
+ {
+ memset (p, ' ', PROGRESS_PERCENT_LEN);
+ p += PROGRESS_PERCENT_LEN;
+ }
+
+ /* The progress bar: "[====> ]" or "[++==> ]". */
+ if (progress_size && bp->total_length > 0)
+ {
+ /* Size of the initial portion. */
+ int insz = (double)bp->initial_length / bp->total_length * progress_size;
+
+ /* Size of the downloaded portion. */
+ int dlsz = (double)size / bp->total_length * progress_size;
+
+ char *begin;
+
+ assert (dlsz <= progress_size);
+ assert (insz <= dlsz);
+
+ *p++ = '[';
+ begin = p;
+
+ /* Print the initial portion of the download with '+' chars, the
+ rest with '=' and one '>'. */
+ memset (p, '+', insz);
+ p += insz;
+
+ dlsz -= insz;
+ if (dlsz > 0)
+ {
+ memset (p, '=', dlsz-1);
+ p += dlsz - 1;
+ *p++ = '>';
+ }
+
+ memset (p, ' ', (progress_size - (p - begin)));
+ p += (progress_size - (p - begin));
+ *p++ = ']';
+ }
+ else if (progress_size)
+ {
+ /* If we can't draw a real progress bar, then at least show
+ *something* to the user. */
+ int ind = bp->tick % (progress_size * 2 - 6);
+ int i, pos;
+
+ /* Make the star move in two directions. */
+ if (ind < progress_size - 2)
+ pos = ind + 1;
+ else
+ pos = progress_size - (ind - progress_size + 5);
+
+ *p++ = '[';
+ for (i = 0; i < progress_size; i++)
+ {
+ if (i == pos - 1) *p++ = '<';
+ else if (i == pos ) *p++ = '=';
+ else if (i == pos + 1) *p++ = '>';
+ else
+ *p++ = ' ';
+ }
+ *p++ = ']';
+
+ }
+ ++bp->tick;
+
+ /* " 234.56M" */
+ down_size = human_readable (size, 1000, 2);
+ cols_diff = PROGRESS_FILESIZE_LEN - count_cols (down_size);
+ if (cols_diff > 0)
+ {
+ memset (p, ' ', cols_diff);
+ p += cols_diff;
+ }
+ p += sprintf (p, "%s", down_size);
+
+ /* " 12.52Kb/s or 12.52KB/s" */
+ if (hist->total_time > 0 && hist->total_bytes)
+ {
+ static const char *short_units[] = { " B/s", "KB/s", "MB/s", "GB/s", "TB/s" };
+ static const char *short_units_bits[] = { " b/s", "Kb/s", "Mb/s", "Gb/s", "Tb/s" };
+ int units = 0;
+ /* Calculate the download speed using the history ring and
+ recent data that hasn't made it to the ring yet. */
+ wgint dlquant = hist->total_bytes + bp->recent_bytes;
+ double dltime = hist->total_time + (dl_total_time - bp->recent_start);
+ double dlspeed = calc_rate (dlquant, dltime, &units);
+ p += sprintf (p, " %4.*f%s", dlspeed >= 99.95 ? 0 : dlspeed >= 9.995 ? 1 : 2,
+ dlspeed, !opt.report_bps ? short_units[units] : short_units_bits[units]);
+ }
+ else
+ APPEND_LITERAL (" --.-KB/s");
+
+ if (!done)
+ {
+ /* " eta ..m ..s"; wait for three seconds before displaying the ETA.
+ That's because the ETA value needs a while to become
+ reliable. */
+ if (bp->total_length > 0 && bp->count > 0 && dl_total_time > 3)
+ {
+ int eta;
+
+ /* Don't change the value of ETA more than approximately once
+ per second; doing so would cause flashing without providing
+ any value to the user. */
+ if (bp->total_length != size
+ && bp->last_eta_value != 0
+ && dl_total_time - bp->last_eta_time < ETA_REFRESH_INTERVAL)
+ eta = bp->last_eta_value;
+ else
+ {
+ /* Calculate ETA using the average download speed to predict
+ the future speed. If you want to use a speed averaged
+ over a more recent period, replace dl_total_time with
+ hist->total_time and bp->count with hist->total_bytes.
+ I found that doing that results in a very jerky and
+ ultimately unreliable ETA. */
+ wgint bytes_remaining = bp->total_length - size;
+ double eta_ = dl_total_time * bytes_remaining / bp->count;
+ if (eta_ >= INT_MAX - 1)
+ goto skip_eta;
+ eta = (int) (eta_ + 0.5);
+ bp->last_eta_value = eta;
+ bp->last_eta_time = dl_total_time;
+ }
+
+ p += sprintf (p, get_eta(&bytes_cols_diff),
+ eta_to_human_short (eta, false));
+ }
+ else if (bp->total_length > 0)
+ {
+ skip_eta:
+ memset (p, ' ', PROGRESS_ETA_LEN);
+ p += PROGRESS_ETA_LEN;
+ }
+ }
+ else
+ {
+ /* When the download is done, print the elapsed time. */
+ int nbytes;
+ int ncols;
+
+ /* TRANSLATORS: The meaning is "elapsed time", and it is shown
+ * next to the progress bar once the download is done.
+ * This should not take up more room than
+ * available here (6 columns). Abbreviate if necessary. */
+ strcpy (p, _(" in "));
+ nbytes = strlen (p);
+ ncols = count_cols (p);
+ bytes_cols_diff = nbytes - ncols;
+ if (dl_total_time >= 10)
+ ncols += sprintf (p + nbytes, "%s", eta_to_human_short ((int) (dl_total_time + 0.5), false));
+ else
+ ncols += sprintf (p + nbytes, "%ss", print_decimal (dl_total_time));
+ p += ncols + bytes_cols_diff;
+ if (ncols < PROGRESS_ETA_LEN)
+ {
+ memset (p, ' ', PROGRESS_ETA_LEN - ncols);
+ p += PROGRESS_ETA_LEN - ncols;
+ }
+ }
+
+ *p = '\0';
+
+ padding = bp->width - count_cols (bp->buffer);
+ assert (padding >= 0 && "Padding length became non-positive!");
+ if (padding > 0)
+ {
+// if (padding > BUF_LEN - (p - bp->buffer) - 1)
+// padding = BUF_LEN - (p - bp->buffer) - 1;
+ memset (p, ' ', padding);
+ p += padding;
+ *p = '\0';
+ }
+
+ /* 2014-11-14 Darshit Shah <darnir@gmail.com>
+ * Assert that the length of the progress bar is lesser than the size of the
+ * screen with which we are dealing. This assertion *MUST* always be removed
+ * from the release code since we do not want Wget to crash and burn when the
+ * assertion fails. Instead Wget should continue downloading and display a
+ * horrible and irritating progress bar that spams the screen with newlines.
+ *
+ * By default, all assertions are disabled in a Wget build and are enabled
+ * only with the --enable-assert configure option.
+ */
+ assert (count_cols (bp->buffer) == bp->width);
+}
+
+/* Print the contents of the buffer as a one-line ASCII "image" so
+ that it can be overwritten next time. */
+
+static void
+display_image (char *buf)
+{
+ bool old = log_set_save_context (false);
+ logputs (LOG_PROGRESS, "\r");
+ logputs (LOG_PROGRESS, buf);
+ log_set_save_context (old);
+}
+
+static void
+bar_set_params (const char *params)
+{
+/* if run_with_timeout() will be used for read, needs to disable interactive bar,
+ or on every timeout(1s) we will have 'retry' with error "decryption failed" */
+#if (defined(HAVE_LIBSSL) || defined(HAVE_LIBSSL32)) && defined(OPENSSL_RUN_WITHTIMEOUT)
+ current_impl->interactive = false;
+#else
+ current_impl->interactive = true;
+#endif
+ if (params)
+ {
+ for (const char *param = params; *param; )
+ {
+ if (!strncmp (param, "force", 5))
+ current_impl_locked = 1;
+ else if (!strncmp (param, "noscroll", 8))
+ opt.noscroll = true;
+
+ if (*(param = strchrnul(param, ':')))
+ param++;
+ }
+ }
+
+ if (((opt.lfilename && opt.show_progress != 1)
+#ifdef HAVE_ISATTY
+ /* The progress bar doesn't make sense if the output is not a
+ TTY -- when logging to file, it is better to review the
+ dots. */
+ || !isatty (fileno (stderr))
+#endif
+ )
+ && !current_impl_locked)
+ {
+ /* We're not printing to a TTY, so revert to the fallback
+ display. #### We're recursively calling
+ set_progress_implementation here, which is slightly kludgy.
+ It would be nicer if we provided that function a return value
+ indicating a failure of some sort. */
+ set_progress_implementation (FALLBACK_PROGRESS_IMPLEMENTATION);
+ return;
+ }
+}
+
+#ifdef SIGWINCH
+void
+progress_handle_sigwinch (int sig _GL_UNUSED)
+{
+ received_sigwinch = 1;
+ signal (SIGWINCH, progress_handle_sigwinch);
+}
+#endif
+
+/* Provide a short human-readable rendition of the ETA. This is like
+ secs_to_human_time in main.c, except the output doesn't include
+ fractions (which would look silly in by nature imprecise ETA) and
+ takes less room. If the time is measured in hours, hours and
+ minutes (but not seconds) are shown; if measured in days, then days
+ and hours are shown. This ensures brevity while still displaying
+ as much as possible.
+
+ If CONDENSED is true, the separator between minutes and seconds
+ (and hours and minutes, etc.) is not included, shortening the
+ display by one additional character. This is used for dot
+ progress.
+
+ The display never occupies more than 7 characters of screen
+ space. */
+
+static const char *
+eta_to_human_short (int secs, bool condensed)
+{
+ static char buf[16]; /* enough space to be on the safe side */
+ static int last = -1;
+ const char *space = condensed ? "" : " ";
+
+ /* Trivial optimization. create_image can call us every 200 msecs
+ (see bar_update) for fast downloads, but ETA will only change
+ once per 900 msecs. */
+ if (secs == last)
+ return buf;
+ last = secs;
+
+ if (secs < 100)
+ sprintf (buf, "%ds", secs);
+ else if (secs < 100 * 60)
+ sprintf (buf, "%dm%s%ds", secs / 60, space, secs % 60);
+ else if (secs < 48 * 3600)
+ sprintf (buf, "%dh%s%dm", secs / 3600, space, (secs / 60) % 60);
+ else if (secs < 100 * 86400)
+ sprintf (buf, "%dd%s%dh", secs / 86400, space, (secs / 3600) % 24);
+ else
+ /* even (2^31-1)/86400 doesn't overflow BUF. */
+ sprintf (buf, "%dd", secs / 86400);
+
+ return buf;
+}
diff --git a/src/progress.h b/src/progress.h
new file mode 100644
index 0000000..c05e9f3
--- /dev/null
+++ b/src/progress.h
@@ -0,0 +1,45 @@
+/* Download progress.
+ Copyright (C) 2001-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+\(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef PROGRESS_H
+#define PROGRESS_H
+
+bool valid_progress_implementation_p (const char *);
+void set_progress_implementation (const char *);
+void progress_schedule_redirect (void);
+
+void *progress_create (const char *, wgint, wgint);
+bool progress_interactive_p (void *);
+void progress_update (void *, wgint, double);
+void progress_finish (void *, double);
+
+void progress_handle_sigwinch (int);
+
+#endif /* PROGRESS_H */
diff --git a/src/ptimer.c b/src/ptimer.c
new file mode 100644
index 0000000..2e5efbc
--- /dev/null
+++ b/src/ptimer.c
@@ -0,0 +1,413 @@
+/* Portable timers.
+ Copyright (C) 2005-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+/* This file implements "portable timers" (ptimers), objects that
+ measure elapsed time using the primitives most appropriate for the
+ underlying operating system. The entry points are:
+
+ ptimer_new -- creates a timer.
+ ptimer_reset -- resets the timer's elapsed time to zero.
+ ptimer_measure -- measure and return the time elapsed since
+ creation or last reset.
+ ptimer_read -- reads the last measured elapsed value.
+ ptimer_destroy -- destroy the timer.
+ ptimer_granularity -- returns the approximate granularity of the timers.
+
+ Timers measure time in seconds, returning the timings as floating
+ point numbers, so they can carry as much precision as the
+ underlying system timer supports. For example, to measure the time
+ it takes to run a loop, you can use something like:
+
+ ptimer *tmr = ptimer_new ();
+ while (...)
+ ... loop ...
+ double secs = ptimer_measure ();
+ printf ("The loop took %.2fs\n", secs); */
+
+#include "wget.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <time.h>
+#include <sys/time.h>
+
+/* Cygwin currently (as of 2005-04-08, Cygwin 1.5.14) lacks clock_getres,
+ but still defines _POSIX_TIMERS! Because of that we simply use the
+ Windows timers under Cygwin. */
+#ifdef __CYGWIN__
+# include <windows.h>
+#endif
+
+#include "utils.h"
+#include "ptimer.h"
+
+/* Depending on the OS, one and only one of PTIMER_POSIX,
+ PTIMER_GETTIMEOFDAY, or PTIMER_WINDOWS will be defined. */
+
+#undef PTIMER_POSIX
+#undef PTIMER_GETTIMEOFDAY
+#undef PTIMER_WINDOWS
+
+#if defined(WINDOWS) || defined(__CYGWIN__)
+# define PTIMER_WINDOWS /* use Windows timers */
+#elif _POSIX_TIMERS - 0 > 0
+# define PTIMER_POSIX /* use POSIX timers (clock_gettime) */
+#else
+# define PTIMER_GETTIMEOFDAY /* use gettimeofday */
+#endif
+
+#ifdef PTIMER_POSIX
+/* Elapsed time measurement using POSIX timers: system time is held in
+ struct timespec, time is retrieved using clock_gettime, and
+ resolution using clock_getres.
+
+ This method is used on Unix systems that implement POSIX
+ timers. */
+
+typedef struct timespec ptimer_system_time;
+
+#define IMPL_init posix_init
+#define IMPL_measure posix_measure
+#define IMPL_diff posix_diff
+#define IMPL_resolution posix_resolution
+
+/* clock_id to use for POSIX clocks. This tries to use
+ CLOCK_MONOTONIC where available, CLOCK_REALTIME otherwise. */
+static int posix_clock_id;
+
+/* Resolution of the clock, initialized in posix_init. */
+static double posix_clock_resolution;
+
+/* Decide which clock_id to use. */
+
+static void
+posix_init (void)
+{
+ /* List of clocks we want to support: some systems support monotonic
+ clocks, Solaris has "high resolution" clock (sometimes
+ unavailable except to superuser), and all should support the
+ real-time clock. */
+#define NO_SYSCONF_CHECK -1
+ static const struct {
+ int id;
+ int sysconf_name;
+ } clocks[] = {
+#if defined(_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK - 0 >= 0
+ { CLOCK_MONOTONIC, _SC_MONOTONIC_CLOCK },
+#endif
+#ifdef CLOCK_HIGHRES
+ { CLOCK_HIGHRES, NO_SYSCONF_CHECK },
+#endif
+ { CLOCK_REALTIME, NO_SYSCONF_CHECK },
+ };
+ size_t i;
+
+ /* Determine the clock we can use. For a clock to be usable, it
+ must be confirmed with sysconf (where applicable) and with
+ clock_getres. If no clock is found, CLOCK_REALTIME is used. */
+
+ for (i = 0; i < countof (clocks); i++)
+ {
+ struct timespec r;
+ if (clocks[i].sysconf_name != NO_SYSCONF_CHECK)
+ if (sysconf (clocks[i].sysconf_name) < 0)
+ continue; /* sysconf claims this clock is unavailable */
+ if (clock_getres (clocks[i].id, &r) < 0)
+ continue; /* clock_getres doesn't work for this clock */
+ posix_clock_id = clocks[i].id;
+ posix_clock_resolution = (double) r.tv_sec + r.tv_nsec / 1e9;
+ /* Guard against nonsense returned by a broken clock_getres. */
+ if (posix_clock_resolution == 0)
+ posix_clock_resolution = 1e-3;
+ break;
+ }
+ if (i == countof (clocks))
+ {
+ /* If no clock was found, it means that clock_getres failed for
+ the realtime clock. */
+ logprintf (LOG_NOTQUIET, _("Cannot get REALTIME clock frequency: %s\n"),
+ strerror (errno));
+ /* Use CLOCK_REALTIME, but invent a plausible resolution. */
+ posix_clock_id = CLOCK_REALTIME;
+ posix_clock_resolution = 1e-3;
+ }
+}
+
+static inline void
+posix_measure (ptimer_system_time *pst)
+{
+ clock_gettime (posix_clock_id, pst);
+}
+
+static inline double
+posix_diff (ptimer_system_time *pst1, ptimer_system_time *pst2)
+{
+ return ((pst1->tv_sec - pst2->tv_sec)
+ + (pst1->tv_nsec - pst2->tv_nsec) / 1e9);
+}
+
+static inline double
+posix_resolution (void)
+{
+ return posix_clock_resolution;
+}
+#endif /* PTIMER_POSIX */
+
+#ifdef PTIMER_GETTIMEOFDAY
+/* Elapsed time measurement using gettimeofday: system time is held in
+ struct timeval, retrieved using gettimeofday, and resolution is
+ unknown.
+
+ This method is used Unix systems without POSIX timers. */
+
+typedef struct timeval ptimer_system_time;
+
+#define IMPL_measure gettimeofday_measure
+#define IMPL_diff gettimeofday_diff
+#define IMPL_resolution gettimeofday_resolution
+
+static inline void
+gettimeofday_measure (ptimer_system_time *pst)
+{
+ gettimeofday (pst, NULL);
+}
+
+static inline double
+gettimeofday_diff (ptimer_system_time *pst1, ptimer_system_time *pst2)
+{
+ return ((pst1->tv_sec - pst2->tv_sec)
+ + (pst1->tv_usec - pst2->tv_usec) / 1e6);
+}
+
+static inline double
+gettimeofday_resolution (void)
+{
+ /* Granularity of gettimeofday varies wildly between architectures.
+ However, it appears that on modern machines it tends to be better
+ than 1ms. Assume 100 usecs. */
+ return 0.1;
+}
+#endif /* PTIMER_GETTIMEOFDAY */
+
+#ifdef PTIMER_WINDOWS
+/* Elapsed time measurement on Windows: where high-resolution timers
+ are available, time is stored in a LARGE_INTEGER and retrieved
+ using QueryPerformanceCounter. Otherwise, it is stored in a DWORD
+ and retrieved using GetTickCount.
+
+ This method is used on Windows. */
+
+typedef union {
+ DWORD lores; /* In case GetTickCount is used */
+ LARGE_INTEGER hires; /* In case high-resolution timer is used */
+} ptimer_system_time;
+
+#define IMPL_init windows_init
+#define IMPL_measure windows_measure
+#define IMPL_diff windows_diff
+#define IMPL_resolution windows_resolution
+
+/* Whether high-resolution timers are used. Set by ptimer_initialize_once
+ the first time ptimer_new is called. */
+static bool windows_hires_timers;
+
+/* Frequency of high-resolution timers -- number of updates per
+ second. Calculated the first time ptimer_new is called provided
+ that high-resolution timers are available. */
+static double windows_hires_freq;
+
+static void
+windows_init (void)
+{
+ LARGE_INTEGER freq;
+ freq.QuadPart = 0;
+ QueryPerformanceFrequency (&freq);
+ if (freq.QuadPart != 0)
+ {
+ windows_hires_timers = true;
+ windows_hires_freq = (double) freq.QuadPart;
+ }
+}
+
+static inline void
+windows_measure (ptimer_system_time *pst)
+{
+ if (windows_hires_timers)
+ QueryPerformanceCounter (&pst->hires);
+ else
+ /* Where hires counters are not available, use GetTickCount rather
+ GetSystemTime, because it is unaffected by clock skew and
+ simpler to use. Note that overflows don't affect us because we
+ never use absolute values of the ticker, only the
+ differences. */
+ pst->lores = GetTickCount ();
+}
+
+static inline double
+windows_diff (ptimer_system_time *pst1, ptimer_system_time *pst2)
+{
+ if (windows_hires_timers)
+ return (pst1->hires.QuadPart - pst2->hires.QuadPart) / windows_hires_freq;
+ else
+ return pst1->lores - pst2->lores;
+}
+
+static double
+windows_resolution (void)
+{
+ if (windows_hires_timers)
+ return 1.0 / windows_hires_freq;
+ else
+ return 10; /* according to MSDN */
+}
+#endif /* PTIMER_WINDOWS */
+
+/* The code below this point is independent of timer implementation. */
+
+struct ptimer {
+ /* The starting point in time which, subtracted from the current
+ time, yields elapsed time. */
+ ptimer_system_time start;
+
+ /* The most recent elapsed time, calculated by ptimer_measure(). */
+ double elapsed_last;
+
+ /* Approximately, the time elapsed between the true start of the
+ measurement and the time represented by START. This is used for
+ adjustment when clock skew is detected. */
+ double elapsed_pre_start;
+};
+
+/* Allocate a new timer and reset it. Return the new timer. */
+
+struct ptimer *
+ptimer_new (void)
+{
+ struct ptimer *pt = xnew0 (struct ptimer);
+#ifdef IMPL_init
+ static bool init_done;
+ if (!init_done)
+ {
+ init_done = true;
+ IMPL_init ();
+ }
+#endif
+ ptimer_reset (pt);
+ return pt;
+}
+
+/* Free the resources associated with the timer. Its further use is
+ prohibited. */
+
+void
+ptimer_destroy (struct ptimer *pt)
+{
+ xfree (pt);
+}
+
+/* Reset timer PT. This establishes the starting point from which
+ ptimer_measure() will return the elapsed time in seconds. It is
+ allowed to reset a previously used timer. */
+
+void
+ptimer_reset (struct ptimer *pt)
+{
+ /* Set the start time to the current time. */
+ IMPL_measure (&pt->start);
+ pt->elapsed_last = 0;
+ pt->elapsed_pre_start = 0;
+}
+
+/* Measure the elapsed time since timer creation/reset. This causes
+ the timer to internally call clock_gettime (or gettimeofday, etc.)
+ to update its idea of current time. The time is returned, but is
+ also stored for later access through ptimer_read().
+
+ This function handles clock skew, i.e. time that moves backwards is
+ ignored. */
+
+double
+ptimer_measure (struct ptimer *pt)
+{
+ ptimer_system_time now;
+ double elapsed;
+
+ IMPL_measure (&now);
+ elapsed = pt->elapsed_pre_start + IMPL_diff (&now, &pt->start);
+
+ /* Ideally we'd just return the difference between NOW and
+ pt->start. However, the system timer can be set back, and we
+ could return a value smaller than when we were last called, even
+ a negative value. Both of these would confuse the callers, which
+ expect us to return monotonically nondecreasing values.
+
+ Therefore: if ELAPSED is smaller than its previous known value,
+ we reset pt->start to the current time and effectively start
+ measuring from this point. But since we don't want the elapsed
+ value to start from zero, we set elapsed_pre_start to the last
+ elapsed time and increment all future calculations by that
+ amount.
+
+ This cannot happen with Windows and POSIX monotonic/highres
+ timers, but the check is not expensive. */
+
+ if (elapsed < pt->elapsed_last)
+ {
+ pt->start = now;
+ pt->elapsed_pre_start = pt->elapsed_last;
+ elapsed = pt->elapsed_last;
+ }
+
+ pt->elapsed_last = elapsed;
+ return elapsed;
+}
+
+/* Return the most recent elapsed time measured with ptimer_measure.
+ If ptimer_measure has not yet been called since the timer was
+ created or reset, this returns 0. */
+
+double
+ptimer_read (const struct ptimer *pt)
+{
+ return pt->elapsed_last;
+}
+
+/* Return the assessed resolution of the timer implementation, in
+ seconds. This is used by code that tries to substitute a better
+ value for timers that have returned zero. */
+
+double
+ptimer_resolution (void)
+{
+ return IMPL_resolution ();
+}
diff --git a/src/ptimer.h b/src/ptimer.h
new file mode 100644
index 0000000..14b2973
--- /dev/null
+++ b/src/ptimer.h
@@ -0,0 +1,46 @@
+/* Declarations for ptimer.c.
+ Copyright (C) 2005-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef PTIMER_H
+#define PTIMER_H
+
+struct ptimer; /* forward declaration; all struct
+ members are private */
+
+struct ptimer *ptimer_new (void);
+void ptimer_destroy (struct ptimer *);
+
+void ptimer_reset (struct ptimer *);
+double ptimer_measure (struct ptimer *);
+double ptimer_read (const struct ptimer *);
+
+double ptimer_resolution (void);
+
+#endif /* PTIMER_H */
diff --git a/src/recur.c b/src/recur.c
new file mode 100644
index 0000000..8b408b6
--- /dev/null
+++ b/src/recur.c
@@ -0,0 +1,919 @@
+/* Handling of recursive HTTP retrieving.
+ Copyright (C) 1996-2012, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <assert.h>
+
+#include "url.h"
+#include "recur.h"
+#include "utils.h"
+#include "retr.h"
+#include "ftp.h"
+#include "host.h"
+#include "hash.h"
+#include "res.h"
+#include "convert.h"
+#include "html-url.h"
+#include "css-url.h"
+#include "spider.h"
+#include "exits.h"
+
+/* Functions for maintaining the URL queue. */
+
+struct queue_element {
+ const char *url; /* the URL to download */
+ const char *referer; /* the referring document */
+ int depth; /* the depth */
+ bool html_allowed; /* whether the document is allowed to
+ be treated as HTML. */
+ struct iri *iri; /* sXXXav */
+ bool css_allowed; /* whether the document is allowed to
+ be treated as CSS. */
+ struct queue_element *next; /* next element in queue */
+};
+
+struct url_queue {
+ struct queue_element *head;
+ struct queue_element *tail;
+ int count, maxcount;
+};
+
+/* Create a URL queue. */
+
+static struct url_queue *
+url_queue_new (void)
+{
+ struct url_queue *queue = xnew0 (struct url_queue);
+ return queue;
+}
+
+/* Delete a URL queue. */
+
+static void
+url_queue_delete (struct url_queue *queue)
+{
+ xfree (queue);
+}
+
+/* Enqueue a URL in the queue. The queue is FIFO: the items will be
+ retrieved ("dequeued") from the queue in the order they were placed
+ into it. */
+
+static void
+url_enqueue (struct url_queue *queue, struct iri *i,
+ const char *url, const char *referer, int depth,
+ bool html_allowed, bool css_allowed)
+{
+ struct queue_element *qel = xnew (struct queue_element);
+ qel->iri = i;
+ qel->url = url;
+ qel->referer = referer;
+ qel->depth = depth;
+ qel->html_allowed = html_allowed;
+ qel->css_allowed = css_allowed;
+ qel->next = NULL;
+
+ ++queue->count;
+ if (queue->count > queue->maxcount)
+ queue->maxcount = queue->count;
+
+ DEBUGP (("Enqueuing %s at depth %d\n",
+ quotearg_n_style (0, escape_quoting_style, url), depth));
+ DEBUGP (("Queue count %d, maxcount %d.\n", queue->count, queue->maxcount));
+
+ if (i)
+ DEBUGP (("[IRI Enqueuing %s with %s\n", quote_n (0, url),
+ i->uri_encoding ? quote_n (1, i->uri_encoding) : "None"));
+
+ if (queue->tail)
+ queue->tail->next = qel;
+ queue->tail = qel;
+
+ if (!queue->head)
+ queue->head = queue->tail;
+}
+
+/* Take a URL out of the queue. Return true if this operation
+ succeeded, or false if the queue is empty. */
+
+static bool
+url_dequeue (struct url_queue *queue, struct iri **i,
+ const char **url, const char **referer, int *depth,
+ bool *html_allowed, bool *css_allowed)
+{
+ struct queue_element *qel = queue->head;
+
+ if (!qel)
+ return false;
+
+ queue->head = queue->head->next;
+ if (!queue->head)
+ queue->tail = NULL;
+
+ *i = qel->iri;
+ *url = qel->url;
+ *referer = qel->referer;
+ *depth = qel->depth;
+ *html_allowed = qel->html_allowed;
+ *css_allowed = qel->css_allowed;
+
+ --queue->count;
+
+ DEBUGP (("Dequeuing %s at depth %d\n",
+ quotearg_n_style (0, escape_quoting_style, qel->url), qel->depth));
+ DEBUGP (("Queue count %d, maxcount %d.\n", queue->count, queue->maxcount));
+
+ xfree (qel);
+ return true;
+}
+
+static void blacklist_add (struct hash_table *blacklist, const char *url)
+{
+ char *url_unescaped = xstrdup (url);
+
+ url_unescape (url_unescaped);
+ string_set_add (blacklist, url_unescaped);
+ xfree (url_unescaped);
+}
+
+static int blacklist_contains (struct hash_table *blacklist, const char *url)
+{
+ char *url_unescaped = xstrdup(url);
+ int ret;
+
+ url_unescape (url_unescaped);
+ ret = string_set_contains (blacklist, url_unescaped);
+ xfree (url_unescaped);
+
+ return ret;
+}
+
+typedef enum
+{
+ WG_RR_SUCCESS, WG_RR_BLACKLIST, WG_RR_NOTHTTPS, WG_RR_NONHTTP, WG_RR_ABSOLUTE,
+ WG_RR_DOMAIN, WG_RR_PARENT, WG_RR_LIST, WG_RR_REGEX, WG_RR_RULES,
+ WG_RR_SPANNEDHOST, WG_RR_ROBOTS
+} reject_reason;
+
+static reject_reason download_child (const struct urlpos *, struct url *, int,
+ struct url *, struct hash_table *, struct iri *);
+static reject_reason descend_redirect (const char *, struct url *, int,
+ struct url *, struct hash_table *, struct iri *);
+static void write_reject_log_header (FILE *);
+static void write_reject_log_reason (FILE *, reject_reason,
+ const struct url *, const struct url *);
+
+/* Retrieve a part of the web beginning with START_URL. This used to
+ be called "recursive retrieval", because the old function was
+ recursive and implemented depth-first search. retrieve_tree on the
+ other hand implements breadth-search traversal of the tree, which
+ results in much nicer ordering of downloads.
+
+ The algorithm this function uses is simple:
+
+ 1. put START_URL in the queue.
+ 2. while there are URLs in the queue:
+
+ 3. get next URL from the queue.
+ 4. download it.
+ 5. if the URL is HTML and its depth does not exceed maximum depth,
+ get the list of URLs embedded therein.
+ 6. for each of those URLs do the following:
+
+ 7. if the URL is not one of those downloaded before, and if it
+ satisfies the criteria specified by the various command-line
+ options, add it to the queue. */
+
+uerr_t
+retrieve_tree (struct url *start_url_parsed, struct iri *pi)
+{
+ uerr_t status = RETROK;
+
+ /* The queue of URLs we need to load. */
+ struct url_queue *queue;
+
+ /* The URLs we do not wish to enqueue, because they are already in
+ the queue, but haven't been downloaded yet. */
+ struct hash_table *blacklist;
+
+ struct iri *i = iri_new ();
+
+ FILE *rejectedlog = NULL; /* Don't write a rejected log. */
+
+ /* Duplicate pi struct if not NULL */
+ if (pi)
+ {
+#define COPYSTR(x) (x) ? xstrdup(x) : NULL;
+ i->uri_encoding = COPYSTR (pi->uri_encoding);
+ i->content_encoding = COPYSTR (pi->content_encoding);
+ i->utf8_encode = pi->utf8_encode;
+#undef COPYSTR
+ }
+#ifdef ENABLE_IRI
+ else
+ set_uri_encoding (i, opt.locale, true);
+#endif
+
+ queue = url_queue_new ();
+ blacklist = make_string_hash_table (0);
+
+ /* Enqueue the starting URL. Use start_url_parsed->url rather than
+ just URL so we enqueue the canonical form of the URL. */
+ url_enqueue (queue, i, xstrdup (start_url_parsed->url), NULL, 0, true,
+ false);
+ blacklist_add (blacklist, start_url_parsed->url);
+
+ if (opt.rejected_log)
+ {
+ rejectedlog = fopen (opt.rejected_log, "w");
+ write_reject_log_header (rejectedlog);
+ if (!rejectedlog)
+ logprintf (LOG_NOTQUIET, "%s: %s\n", opt.rejected_log, strerror (errno));
+ }
+
+ while (1)
+ {
+ bool descend = false;
+ char *url, *referer, *file = NULL;
+ int depth;
+ bool html_allowed, css_allowed;
+ bool is_css = false;
+ bool dash_p_leaf_HTML = false;
+
+ if (opt.quota && total_downloaded_bytes > opt.quota)
+ break;
+ if (status == FWRITEERR)
+ break;
+
+ /* Get the next URL from the queue... */
+
+ if (!url_dequeue (queue, (struct iri **) &i,
+ (const char **)&url, (const char **)&referer,
+ &depth, &html_allowed, &css_allowed))
+ break;
+
+ /* ...and download it. Note that this download is in most cases
+ unconditional, as download_child already makes sure a file
+ doesn't get enqueued twice -- and yet this check is here, and
+ not in download_child. This is so that if you run `wget -r
+ URL1 URL2', and a random URL is encountered once under URL1
+ and again under URL2, but at a different (possibly smaller)
+ depth, we want the URL's children to be taken into account
+ the second time. */
+ if (dl_url_file_map && hash_table_contains (dl_url_file_map, url))
+ {
+ bool is_css_bool;
+
+ file = xstrdup (hash_table_get (dl_url_file_map, url));
+
+ DEBUGP (("Already downloaded \"%s\", reusing it from \"%s\".\n",
+ url, file));
+
+ if ((is_css_bool = (css_allowed
+ && downloaded_css_set
+ && string_set_contains (downloaded_css_set, file)))
+ || (html_allowed
+ && downloaded_html_set
+ && string_set_contains (downloaded_html_set, file)))
+ {
+ descend = true;
+ is_css = is_css_bool;
+ }
+ }
+ else
+ {
+ int dt = 0, url_err;
+ char *redirected = NULL;
+ struct url *url_parsed = url_parse (url, &url_err, i, true);
+
+ if (!url_parsed)
+ {
+ char *error = url_error (url, url_err);
+ logprintf (LOG_NOTQUIET, "%s: %s.\n",url, error);
+ xfree (error);
+ inform_exit_status (URLERROR);
+ }
+ else
+ {
+
+ status = retrieve_url (url_parsed, url, &file, &redirected, referer,
+ &dt, false, i, true);
+
+ if (html_allowed && file && status == RETROK
+ && (dt & RETROKF) && (dt & TEXTHTML))
+ {
+ descend = true;
+ is_css = false;
+ }
+
+ /* a little different, css_allowed can override content type
+ lots of web servers serve css with an incorrect content type
+ */
+ if (file && status == RETROK
+ && (dt & RETROKF) &&
+ ((dt & TEXTCSS) || css_allowed))
+ {
+ descend = true;
+ is_css = true;
+ }
+
+ if (redirected)
+ {
+ /* We have been redirected, possibly to another host, or
+ different path, or wherever. Check whether we really
+ want to follow it. */
+ if (descend)
+ {
+ reject_reason r = descend_redirect (redirected, url_parsed,
+ depth, start_url_parsed, blacklist, i);
+ if (r == WG_RR_SUCCESS)
+ {
+ /* Make sure that the old pre-redirect form gets
+ blacklisted. */
+ blacklist_add (blacklist, url);
+ }
+ else
+ {
+ write_reject_log_reason (rejectedlog, r, url_parsed, start_url_parsed);
+ descend = false;
+ }
+ }
+
+ xfree (url);
+ url = redirected;
+ }
+ else
+ {
+ xfree (url);
+ url = xstrdup (url_parsed->url);
+ }
+ url_free (url_parsed);
+ }
+ }
+
+ if (opt.spider)
+ {
+ visited_url (url, referer);
+ }
+
+ if (descend
+ && depth >= opt.reclevel && opt.reclevel != INFINITE_RECURSION)
+ {
+ if (opt.page_requisites
+ && (depth == opt.reclevel || depth == opt.reclevel + 1))
+ {
+ /* When -p is specified, we are allowed to exceed the
+ maximum depth, but only for the "inline" links,
+ i.e. those that are needed to display the page.
+ Originally this could exceed the depth at most by
+ one, but we allow one more level so that the leaf
+ pages that contain frames can be loaded
+ correctly. */
+ dash_p_leaf_HTML = true;
+ }
+ else
+ {
+ /* Either -p wasn't specified or it was and we've
+ already spent the two extra (pseudo-)levels that it
+ affords us, so we need to bail out. */
+ DEBUGP (("Not descending further; at depth %d, max. %d.\n",
+ depth, opt.reclevel));
+ descend = false;
+ }
+ }
+
+ /* If the downloaded document was HTML or CSS, parse it and enqueue the
+ links it contains. */
+
+ if (descend)
+ {
+ bool meta_disallow_follow = false;
+ struct urlpos *children
+ = is_css ? get_urls_css_file (file, url) :
+ get_urls_html (file, url, &meta_disallow_follow, i);
+
+ if (opt.use_robots && meta_disallow_follow)
+ {
+ free_urlpos (children);
+ children = NULL;
+ }
+
+ if (children)
+ {
+ struct urlpos *child = children;
+ struct url *url_parsed = url_parse (url, NULL, i, true);
+ struct iri *ci;
+ char *referer_url = url;
+ bool strip_auth;
+
+ assert (url_parsed != NULL);
+
+ if (!url_parsed)
+ continue;
+
+ strip_auth = (url_parsed && url_parsed->user);
+
+ /* Strip auth info if present */
+ if (strip_auth)
+ referer_url = url_string (url_parsed, URL_AUTH_HIDE);
+
+ for (; child; child = child->next)
+ {
+ reject_reason r;
+
+ if (child->ignore_when_downloading)
+ {
+ DEBUGP (("Not following due to 'ignore' flag: %s\n", child->url->url));
+ continue;
+ }
+
+ if (dash_p_leaf_HTML && !child->link_inline_p)
+ {
+ DEBUGP (("Not following due to 'link inline' flag: %s\n", child->url->url));
+ continue;
+ }
+
+ r = download_child (child, url_parsed, depth,
+ start_url_parsed, blacklist, i);
+ if (r == WG_RR_SUCCESS)
+ {
+ ci = iri_new ();
+ set_uri_encoding (ci, i->content_encoding, false);
+ url_enqueue (queue, ci, xstrdup (child->url->url),
+ xstrdup (referer_url), depth + 1,
+ child->link_expect_html,
+ child->link_expect_css);
+ /* We blacklist the URL we have enqueued, because we
+ don't want to enqueue (and hence download) the
+ same URL twice. */
+ blacklist_add (blacklist, child->url->url);
+ }
+ else
+ {
+ write_reject_log_reason (rejectedlog, r, child->url, url_parsed);
+ }
+ }
+
+ if (strip_auth)
+ xfree (referer_url);
+ url_free (url_parsed);
+ free_urlpos (children);
+ }
+ }
+
+ if (file
+ && (opt.delete_after
+ || opt.spider /* opt.recursive is implicitly true */
+ || !acceptable (file)))
+ {
+ /* Either --delete-after was specified, or we loaded this
+ (otherwise unneeded because of --spider or rejected by -R)
+ HTML file just to harvest its hyperlinks -- in either case,
+ delete the local file. */
+ DEBUGP (("Removing file due to %s in recursive_retrieve():\n",
+ opt.delete_after ? "--delete-after" :
+ (opt.spider ? "--spider" :
+ "recursive rejection criteria")));
+ logprintf (LOG_VERBOSE,
+ (opt.delete_after || opt.spider
+ ? _("Removing %s.\n")
+ : _("Removing %s since it should be rejected.\n")),
+ file);
+ if (unlink (file))
+ logprintf (LOG_NOTQUIET, "unlink: %s\n", strerror (errno));
+ logputs (LOG_VERBOSE, "\n");
+ register_delete_file (file);
+ }
+
+ xfree (url);
+ xfree (referer);
+ xfree (file);
+ iri_free (i);
+ }
+
+ if (rejectedlog)
+ {
+ fclose (rejectedlog);
+ rejectedlog = NULL;
+ }
+
+ /* If anything is left of the queue due to a premature exit, free it
+ now. */
+ {
+ char *d1, *d2;
+ int d3;
+ bool d4, d5;
+ struct iri *d6;
+ while (url_dequeue (queue, (struct iri **)&d6,
+ (const char **)&d1, (const char **)&d2, &d3, &d4, &d5))
+ {
+ iri_free (d6);
+ xfree (d1);
+ xfree (d2);
+ }
+ }
+ url_queue_delete (queue);
+
+ string_set_free (blacklist);
+
+ if (opt.quota && total_downloaded_bytes > opt.quota)
+ return QUOTEXC;
+ else if (status == FWRITEERR)
+ return FWRITEERR;
+ else
+ return RETROK;
+}
+
+/* Based on the context provided by retrieve_tree, decide whether a
+ URL is to be descended to. This is only ever called from
+ retrieve_tree, but is in a separate function for clarity.
+
+ The most expensive checks (such as those for robots) are memoized
+ by storing these URLs to BLACKLIST. This may or may not help. It
+ will help if those URLs are encountered many times. */
+
+static reject_reason
+download_child (const struct urlpos *upos, struct url *parent, int depth,
+ struct url *start_url_parsed, struct hash_table *blacklist,
+ struct iri *iri)
+{
+ struct url *u = upos->url;
+ const char *url = u->url;
+ bool u_scheme_like_http;
+ reject_reason reason = WG_RR_SUCCESS;
+
+ DEBUGP (("Deciding whether to enqueue \"%s\".\n", url));
+
+ if (blacklist_contains (blacklist, url))
+ {
+ if (opt.spider)
+ {
+ char *referrer = url_string (parent, URL_AUTH_HIDE_PASSWD);
+ DEBUGP (("download_child: parent->url is: %s\n", quote (parent->url)));
+ visited_url (url, referrer);
+ xfree (referrer);
+ }
+ DEBUGP (("Already on the black list.\n"));
+ reason = WG_RR_BLACKLIST;
+ goto out;
+ }
+
+ /* Several things to check for:
+ 1. if scheme is not https and https_only requested
+ 2. if scheme is not http, and we don't load it
+ 3. check for relative links (if relative_only is set)
+ 4. check for domain
+ 5. check for no-parent
+ 6. check for excludes && includes
+ 7. check for suffix
+ 8. check for same host (if spanhost is unset), with possible
+ gethostbyname baggage
+ 9. check for robots.txt
+
+ Addendum: If the URL is FTP, and it is to be loaded, only the
+ domain and suffix settings are "stronger".
+
+ Note that .html files will get loaded regardless of suffix rules
+ (but that is remedied later with unlink) unless the depth equals
+ the maximum depth.
+
+ More time- and memory- consuming tests should be put later on
+ the list. */
+
+#ifdef HAVE_SSL
+ if (opt.https_only && u->scheme != SCHEME_HTTPS)
+ {
+ DEBUGP (("Not following non-HTTPS links.\n"));
+ reason = WG_RR_NOTHTTPS;
+ goto out;
+ }
+#endif
+
+ /* Determine whether URL under consideration has a HTTP-like scheme. */
+ u_scheme_like_http = schemes_are_similar_p (u->scheme, SCHEME_HTTP);
+
+ /* 1. Schemes other than HTTP are normally not recursed into. */
+ if (!u_scheme_like_http && !((u->scheme == SCHEME_FTP
+#ifdef HAVE_SSL
+ || u->scheme == SCHEME_FTPS
+#endif
+ ) && opt.follow_ftp))
+ {
+ DEBUGP (("Not following non-HTTP schemes.\n"));
+ reason = WG_RR_NONHTTP;
+ goto out;
+ }
+
+ /* 2. If it is an absolute link and they are not followed, throw it
+ out. */
+ if (u_scheme_like_http)
+ if (opt.relative_only && !upos->link_relative_p)
+ {
+ DEBUGP (("It doesn't really look like a relative link.\n"));
+ reason = WG_RR_ABSOLUTE;
+ goto out;
+ }
+
+ /* 3. If its domain is not to be accepted/looked-up, chuck it
+ out. */
+ if (!accept_domain (u))
+ {
+ DEBUGP (("The domain was not accepted.\n"));
+ reason = WG_RR_DOMAIN;
+ goto out;
+ }
+
+ /* 4. Check for parent directory.
+
+ If we descended to a different host or changed the scheme, ignore
+ opt.no_parent. Also ignore it for documents needed to display
+ the parent page when in -p mode. */
+ if (opt.no_parent
+ && schemes_are_similar_p (u->scheme, start_url_parsed->scheme)
+ && 0 == strcasecmp (u->host, start_url_parsed->host)
+ && (u->scheme != start_url_parsed->scheme
+ || u->port == start_url_parsed->port)
+ && !(opt.page_requisites && upos->link_inline_p))
+ {
+ if (!subdir_p (start_url_parsed->dir, u->dir))
+ {
+ DEBUGP (("Going to \"%s\" would escape \"%s\" with no_parent on.\n",
+ u->dir, start_url_parsed->dir));
+ reason = WG_RR_PARENT;
+ goto out;
+ }
+ }
+
+ /* 5. If the file does not match the acceptance list, or is on the
+ rejection list, chuck it out. The same goes for the directory
+ exclusion and inclusion lists. */
+ if (opt.includes || opt.excludes)
+ {
+ if (!accdir (u->dir))
+ {
+ DEBUGP (("%s (%s) is excluded/not-included.\n", url, u->dir));
+ reason = WG_RR_LIST;
+ goto out;
+ }
+ }
+ if (!accept_url (url))
+ {
+ DEBUGP (("%s is excluded/not-included through regex.\n", url));
+ reason = WG_RR_REGEX;
+ goto out;
+ }
+
+ /* 6. Check for acceptance/rejection rules. We ignore these rules
+ for directories (no file name to match) and for non-leaf HTMLs,
+ which can lead to other files that do need to be downloaded. (-p
+ automatically implies non-leaf because with -p we can, if
+ necessary, overstep the maximum depth to get the page requisites.) */
+ if (u->file[0] != '\0'
+ && !(has_html_suffix_p (u->file)
+ /* The exception only applies to non-leaf HTMLs (but -p
+ always implies non-leaf because we can overstep the
+ maximum depth to get the requisites): */
+ && (/* non-leaf */
+ opt.reclevel == INFINITE_RECURSION
+ /* also non-leaf */
+ || depth < opt.reclevel - 1
+ /* -p, which implies non-leaf (see above) */
+ || opt.page_requisites)))
+ {
+ if (!acceptable (u->file))
+ {
+ DEBUGP (("%s (%s) does not match acc/rej rules.\n",
+ url, u->file));
+ reason = WG_RR_RULES;
+ goto out;
+ }
+ }
+
+ /* 7. */
+ if (schemes_are_similar_p (u->scheme, parent->scheme))
+ if (!opt.spanhost && 0 != strcasecmp (parent->host, u->host))
+ {
+ DEBUGP (("This is not the same hostname as the parent's (%s and %s).\n",
+ u->host, parent->host));
+ reason = WG_RR_SPANNEDHOST;
+ goto out;
+ }
+
+ /* 8. */
+ if (opt.use_robots && u_scheme_like_http)
+ {
+ struct robot_specs *specs = res_get_specs (u->host, u->port);
+ if (!specs)
+ {
+ char *rfile;
+ if (res_retrieve_file (url, &rfile, iri))
+ {
+ specs = res_parse_from_file (rfile);
+
+ /* Delete the robots.txt file if we chose to either delete the
+ files after downloading or we're just running a spider. */
+ if (opt.delete_after || opt.spider)
+ {
+ logprintf (LOG_VERBOSE, _("Removing %s.\n"), rfile);
+ if (unlink (rfile))
+ logprintf (LOG_NOTQUIET, "unlink: %s\n",
+ strerror (errno));
+ }
+
+ xfree (rfile);
+ }
+ else
+ {
+ /* If we cannot get real specs, at least produce
+ dummy ones so that we can register them and stop
+ trying to retrieve them. */
+ specs = res_parse ("", 0);
+ }
+ res_register_specs (u->host, u->port, specs);
+ }
+
+ /* Now that we have (or don't have) robots.txt specs, we can
+ check what they say. */
+ if (!res_match_path (specs, u->path))
+ {
+ DEBUGP (("Not following %s because robots.txt forbids it.\n", url));
+ blacklist_add (blacklist, url);
+ reason = WG_RR_ROBOTS;
+ goto out;
+ }
+ }
+
+ out:
+
+ if (reason == WG_RR_SUCCESS)
+ /* The URL has passed all the tests. It can be placed in the
+ download queue. */
+ DEBUGP (("Decided to load it.\n"));
+ else
+ DEBUGP (("Decided NOT to load it.\n"));
+
+ return reason;
+}
+
+/* This function determines whether we will consider downloading the
+ children of a URL whose download resulted in a redirection,
+ possibly to another host, etc. It is needed very rarely, and thus
+ it is merely a simple-minded wrapper around download_child. */
+
+static reject_reason
+descend_redirect (const char *redirected, struct url *orig_parsed, int depth,
+ struct url *start_url_parsed, struct hash_table *blacklist,
+ struct iri *iri)
+{
+ struct url *new_parsed;
+ struct urlpos *upos;
+ reject_reason reason;
+
+ assert (orig_parsed != NULL);
+
+ new_parsed = url_parse (redirected, NULL, NULL, false);
+ assert (new_parsed != NULL);
+
+ upos = xnew0 (struct urlpos);
+ upos->url = new_parsed;
+
+ reason = download_child (upos, orig_parsed, depth,
+ start_url_parsed, blacklist, iri);
+
+ if (reason == WG_RR_SUCCESS)
+ blacklist_add (blacklist, upos->url->url);
+ else if (reason == WG_RR_LIST || reason == WG_RR_REGEX)
+ {
+ DEBUGP (("Ignoring decision for redirects, decided to load it.\n"));
+ blacklist_add (blacklist, upos->url->url);
+ reason = WG_RR_SUCCESS;
+ }
+ else
+ DEBUGP (("Redirection \"%s\" failed the test.\n", redirected));
+
+ url_free (new_parsed);
+ xfree (upos);
+
+ return reason;
+}
+
+
+/* This function writes the rejected log header. */
+static void
+write_reject_log_header (FILE *f)
+{
+ if (!f)
+ return;
+
+ /* Note: Update this header when columns change in any way. */
+ fprintf (f, "REASON\t"
+ "U_URL\tU_SCHEME\tU_HOST\tU_PORT\tU_PATH\tU_PARAMS\tU_QUERY\tU_FRAGMENT\t"
+ "P_URL\tP_SCHEME\tP_HOST\tP_PORT\tP_PATH\tP_PARAMS\tP_QUERY\tP_FRAGMENT\n");
+}
+
+/* This function writes a URL to the reject log. Internal use only. */
+static void
+write_reject_log_url (FILE *fp, const struct url *url)
+{
+ const char *escaped_str;
+ const char *scheme_str;
+
+ if (!fp)
+ return;
+
+ escaped_str = url_escape (url->url);
+
+ switch (url->scheme)
+ {
+ case SCHEME_HTTP: scheme_str = "SCHEME_HTTP"; break;
+#ifdef HAVE_SSL
+ case SCHEME_HTTPS: scheme_str = "SCHEME_HTTPS"; break;
+ case SCHEME_FTPS: scheme_str = "SCHEME_FTPS"; break;
+#endif
+ case SCHEME_FTP: scheme_str = "SCHEME_FTP"; break;
+ default: scheme_str = "SCHEME_INVALID"; break;
+ }
+
+ fprintf (fp, "%s\t%s\t%s\t%i\t%s\t%s\t%s\t%s",
+ escaped_str,
+ scheme_str,
+ url->host,
+ url->port,
+ url->path,
+ url->params ? url->params : "",
+ url->query ? url->query : "",
+ url->fragment ? url->fragment : "");
+
+ xfree (escaped_str);
+}
+
+/* This function writes out information on why a URL was rejected and its
+ context from download_child such as the URL being rejected and it's
+ parent's URL. The format it uses is comma separated values but with tabs. */
+static void
+write_reject_log_reason (FILE *fp, reject_reason reason,
+ const struct url *url, const struct url *parent)
+{
+ const char *reason_str;
+
+ if (!fp)
+ return;
+
+ switch (reason)
+ {
+ case WG_RR_SUCCESS: reason_str = "SUCCESS"; break;
+ case WG_RR_BLACKLIST: reason_str = "BLACKLIST"; break;
+ case WG_RR_NOTHTTPS: reason_str = "NOTHTTPS"; break;
+ case WG_RR_NONHTTP: reason_str = "NONHTTP"; break;
+ case WG_RR_ABSOLUTE: reason_str = "ABSOLUTE"; break;
+ case WG_RR_DOMAIN: reason_str = "DOMAIN"; break;
+ case WG_RR_PARENT: reason_str = "PARENT"; break;
+ case WG_RR_LIST: reason_str = "LIST"; break;
+ case WG_RR_REGEX: reason_str = "REGEX"; break;
+ case WG_RR_RULES: reason_str = "RULES"; break;
+ case WG_RR_SPANNEDHOST: reason_str = "SPANNEDHOST"; break;
+ case WG_RR_ROBOTS: reason_str = "ROBOTS"; break;
+ default: reason_str = "UNKNOWN"; break;
+ }
+
+ fprintf (fp, "%s\t", reason_str);
+ write_reject_log_url (fp, url);
+ fprintf (fp, "\t");
+ write_reject_log_url (fp, parent);
+ fprintf (fp, "\n");
+}
+
+/* vim:set sts=2 sw=2 cino+={s: */
diff --git a/src/recur.h b/src/recur.h
new file mode 100644
index 0000000..ea89d99
--- /dev/null
+++ b/src/recur.h
@@ -0,0 +1,49 @@
+/* Declarations for recur.c.
+ Copyright (C) 1996-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef RECUR_H
+#define RECUR_H
+
+#include "url.h"
+
+/* For most options, 0 means no limits, but with -p in the picture,
+ that causes a problem on the maximum recursion depth variable. To
+ retain backwards compatibility we allow users to consider "0" to be
+ synonymous with "inf" for -l, but internally infinite recursion is
+ specified by -1 and 0 means to only retrieve the requisites of a
+ single document. */
+#define INFINITE_RECURSION -1
+
+struct urlpos;
+
+void recursive_cleanup (void);
+uerr_t retrieve_tree (struct url *, struct iri *);
+
+#endif /* RECUR_H */
diff --git a/src/res.c b/src/res.c
new file mode 100644
index 0000000..0ed0df9
--- /dev/null
+++ b/src/res.c
@@ -0,0 +1,650 @@
+/* Support for Robot Exclusion Standard (RES).
+ Copyright (C) 2001, 2006-2011, 2015, 2018-2020 Free Software
+ Foundation, Inc.
+
+This file is part of Wget.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at
+your option) any later version.
+
+This program is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+/* This file implements the Robot Exclusion Standard (RES).
+
+ RES is a simple protocol that enables site admins to signalize to
+ the web crawlers that certain parts of the site should not be
+ accessed. All the admin needs to do is create a "robots.txt" file
+ in the web server root, and use simple commands to allow or
+ disallow access to certain parts of the site.
+
+ The first specification was written by Martijn Koster in 1994, and
+ is still available at <http://www.robotstxt.org/orig.html>.
+ In 1996, Martijn wrote an Internet Draft specifying an improved RES
+ specification; however, that work was apparently abandoned since
+ the draft has expired in 1997 and hasn't been replaced since. The
+ draft is available at
+ <http://www.robotstxt.org/norobots-rfc.txt>.
+
+ This file implements RES as specified by the draft. Note that this
+ only handles the "robots.txt" support. The META tag that controls
+ whether the links should be followed is handled in `html-url.c'.
+
+ Known deviations:
+
+ * The end-of-line comment recognition is more in the spirit of the
+ Bourne Shell (as specified by RES-1994). That means that
+ "foo#bar" is taken literally, whereas "foo #bar" is interpreted
+ as "foo". The Draft apparently specifies that both should be
+ interpreted as "foo".
+
+ * We don't recognize sole CR as the line ending.
+
+ * We don't implement expiry mechanism for /robots.txt specs. I
+ consider it non-necessary for a relatively short-lived
+ application such as Wget. Besides, it is highly questionable
+ whether anyone deploys the recommended expiry scheme for
+ robots.txt.
+
+ Entry points are functions res_parse, res_parse_from_file,
+ res_match_path, res_register_specs, res_get_specs, and
+ res_retrieve_file. */
+
+#include "wget.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <assert.h>
+
+#include "utils.h"
+#include "hash.h"
+#include "url.h"
+#include "retr.h"
+#include "res.h"
+#include "c-strcase.h"
+
+#ifdef TESTING
+#include "../tests/unit-tests.h"
+#endif
+
+struct path_info {
+ char *path;
+ bool allowedp;
+ bool user_agent_exact_p;
+};
+
+struct robot_specs {
+ int count;
+ int size;
+ struct path_info *paths;
+};
+
+/* Parsing the robot spec. */
+
+/* Check whether AGENT (a string of length LENGTH) equals "wget" or
+ "*". If it is either of them, *matches is set to one. If it is
+ "wget", *exact_match is set to one. */
+
+static void
+match_user_agent (const char *agent, int length,
+ bool *matches, bool *exact_match)
+{
+ if (length == 1 && *agent == '*')
+ {
+ *matches = true;
+ *exact_match = false;
+ }
+ else if (BOUNDED_EQUAL_NO_CASE (agent, agent + length, "wget"))
+ {
+ *matches = true;
+ *exact_match = true;
+ }
+ else
+ {
+ *matches = false;
+ *exact_match = false;
+ }
+}
+
+/* Add a path specification between PATH_B and PATH_E as one of the
+ paths in SPECS. */
+
+static void
+add_path (struct robot_specs *specs, const char *path_b, const char *path_e,
+ bool allowedp, bool exactp)
+{
+ struct path_info pp;
+ if (path_b < path_e && *path_b == '/')
+ /* Our path representation doesn't use a leading slash, so remove
+ one from theirs. */
+ ++path_b;
+ pp.path = strdupdelim (path_b, path_e);
+ pp.allowedp = allowedp;
+ pp.user_agent_exact_p = exactp;
+ ++specs->count;
+ if (specs->count > specs->size)
+ {
+ if (specs->size == 0)
+ specs->size = 1;
+ else
+ specs->size <<= 1;
+ specs->paths = xrealloc (specs->paths,
+ specs->size * sizeof (struct path_info));
+ }
+ specs->paths[specs->count - 1] = pp;
+}
+
+/* Recreate SPECS->paths with only those paths that have
+ user_agent_exact_p set to true. */
+
+static void
+prune_non_exact (struct robot_specs *specs)
+{
+ struct path_info *newpaths;
+ int i, j, cnt;
+ cnt = 0;
+ for (i = 0; i < specs->count; i++)
+ if (specs->paths[i].user_agent_exact_p)
+ ++cnt;
+ newpaths = xnew_array (struct path_info, cnt);
+ for (i = 0, j = 0; i < specs->count; i++)
+ if (specs->paths[i].user_agent_exact_p)
+ newpaths[j++] = specs->paths[i];
+ else
+ xfree (specs->paths[i].path);
+ assert (j == cnt);
+ xfree (specs->paths);
+ specs->paths = newpaths;
+ specs->count = cnt;
+ specs->size = cnt;
+}
+
+#define EOL(p) ((p) >= lineend)
+
+#define SKIP_SPACE(p) do { \
+ while (!EOL (p) && c_isspace (*p)) \
+ ++p; \
+} while (0)
+
+#define FIELD_IS(string_literal) \
+ BOUNDED_EQUAL_NO_CASE (field_b, field_e, string_literal)
+
+/* Parse textual RES specs beginning with SOURCE of length LENGTH.
+ Return a specs objects ready to be fed to res_match_path.
+
+ The parsing itself is trivial, but creating a correct SPECS object
+ is trickier than it seems, because RES is surprisingly byzantine if
+ you attempt to implement it correctly.
+
+ A "record" is a block of one or more `User-Agent' lines followed by
+ one or more `Allow' or `Disallow' lines. Record is accepted by
+ Wget if one of the `User-Agent' lines was "wget", or if the user
+ agent line was "*".
+
+ After all the lines have been read, we examine whether an exact
+ ("wget") user-agent field was specified. If so, we delete all the
+ lines read under "User-Agent: *" blocks because we have our own
+ Wget-specific blocks. This enables the admin to say:
+
+ User-Agent: *
+ Disallow: /
+
+ User-Agent: google
+ User-Agent: wget
+ Disallow: /cgi-bin
+
+ This means that to Wget and to Google, /cgi-bin is disallowed,
+ whereas for all other crawlers, everything is disallowed.
+ res_parse is implemented so that the order of records doesn't
+ matter. In the case above, the "User-Agent: *" could have come
+ after the other one. */
+
+struct robot_specs *
+res_parse (const char *source, int length)
+{
+ int line_count = 1;
+
+ const char *p = source;
+ const char *end = source + length;
+
+ /* true if last applicable user-agent field matches Wget. */
+ bool user_agent_applies = false;
+
+ /* true if last applicable user-agent field *exactly* matches
+ Wget. */
+ bool user_agent_exact = false;
+
+ /* whether we ever encountered exact user agent. */
+ bool found_exact = false;
+
+ /* count of allow/disallow lines in the current "record", i.e. after
+ the last `user-agent' instructions. */
+ int record_count = 0;
+
+ struct robot_specs *specs = xnew0 (struct robot_specs);
+
+ while (1)
+ {
+ const char *lineend, *lineend_real;
+ const char *field_b, *field_e;
+ const char *value_b, *value_e;
+
+ if (p == end)
+ break;
+ lineend_real = memchr (p, '\n', end - p);
+ if (lineend_real)
+ ++lineend_real;
+ else
+ lineend_real = end;
+ lineend = lineend_real;
+
+ /* Before doing anything else, check whether the line is empty
+ or comment-only. */
+ SKIP_SPACE (p);
+ if (EOL (p) || *p == '#')
+ goto next;
+
+ /* Make sure the end-of-line comments are respected by setting
+ lineend to a location preceding the first comment. Real line
+ ending remains in lineend_real. */
+ for (lineend = p; lineend < lineend_real; lineend++)
+ if ((lineend == p || c_isspace (*(lineend - 1)))
+ && *lineend == '#')
+ break;
+
+ /* Ignore trailing whitespace in the same way. */
+ while (lineend > p && c_isspace (*(lineend - 1)))
+ --lineend;
+
+ assert (!EOL (p));
+
+ field_b = p;
+ while (!EOL (p) && (c_isalnum (*p) || *p == '-'))
+ ++p;
+ field_e = p;
+
+ SKIP_SPACE (p);
+ if (field_b == field_e || EOL (p) || *p != ':')
+ {
+ DEBUGP (("Ignoring malformed line %d\n", line_count));
+ goto next;
+ }
+ ++p; /* skip ':' */
+ SKIP_SPACE (p);
+
+ value_b = p;
+ while (!EOL (p))
+ ++p;
+ value_e = p;
+
+ /* Finally, we have a syntactically valid line. */
+ if (FIELD_IS ("user-agent"))
+ {
+ /* We have to support several cases:
+
+ --previous records--
+
+ User-Agent: foo
+ User-Agent: Wget
+ User-Agent: bar
+ ... matching record ...
+
+ User-Agent: baz
+ User-Agent: qux
+ ... non-matching record ...
+
+ User-Agent: *
+ ... matching record, but will be pruned later ...
+
+ We have to respect `User-Agent' at the beginning of each
+ new record simply because we don't know if we're going to
+ encounter "Wget" among the agents or not. Hence,
+ match_user_agent is called when record_count != 0.
+
+ But if record_count is 0, we have to keep calling it
+ until it matches, and if that happens, we must not call
+ it any more, until the next record. Hence the other part
+ of the condition. */
+ if (record_count != 0 || user_agent_applies == false)
+ match_user_agent (value_b, value_e - value_b,
+ &user_agent_applies, &user_agent_exact);
+ if (user_agent_exact)
+ found_exact = true;
+ record_count = 0;
+ }
+ else if (FIELD_IS ("allow"))
+ {
+ if (user_agent_applies)
+ {
+ add_path (specs, value_b, value_e, true, user_agent_exact);
+ }
+ ++record_count;
+ }
+ else if (FIELD_IS ("disallow"))
+ {
+ if (user_agent_applies)
+ {
+ bool allowed = false;
+ if (value_b == value_e)
+ /* Empty "disallow" line means everything is *allowed*! */
+ allowed = true;
+ add_path (specs, value_b, value_e, allowed, user_agent_exact);
+ }
+ ++record_count;
+ }
+ else
+ {
+ DEBUGP (("Ignoring unknown field at line %d\n", line_count));
+ goto next;
+ }
+
+ next:
+ p = lineend_real;
+ ++line_count;
+ }
+
+ if (found_exact)
+ {
+ /* We've encountered an exactly matching user-agent. Throw out
+ all the stuff with user-agent: *. */
+ prune_non_exact (specs);
+ }
+ else if (specs->size > specs->count)
+ {
+ /* add_path normally over-allocates specs->paths. Reallocate it
+ to the correct size in order to conserve some memory. */
+ specs->paths = xrealloc (specs->paths,
+ specs->count * sizeof (struct path_info));
+ specs->size = specs->count;
+ }
+
+ return specs;
+}
+
+/* The same like res_parse, but first map the FILENAME into memory,
+ and then parse it. */
+
+struct robot_specs *
+res_parse_from_file (const char *filename)
+{
+ struct robot_specs *specs;
+ struct file_memory *fm = wget_read_file (filename);
+ if (!fm)
+ {
+ logprintf (LOG_NOTQUIET, _("Cannot open %s: %s\n"),
+ filename, strerror (errno));
+ return NULL;
+ }
+ specs = res_parse (fm->content, fm->length);
+ wget_read_file_free (fm);
+ return specs;
+}
+
+static void
+free_specs (struct robot_specs *specs)
+{
+ int i;
+ for (i = 0; i < specs->count; i++)
+ xfree (specs->paths[i].path);
+ xfree (specs->paths);
+ xfree (specs);
+}
+
+/* Matching of a path according to the specs. */
+
+/* If C is '%' and (ptr[1], ptr[2]) form a hexadecimal number, and if
+ that number is not a numerical representation of '/', decode C and
+ advance the pointer. */
+
+#define DECODE_MAYBE(c, ptr) do { \
+ if (c == '%' && c_isxdigit (ptr[1]) && c_isxdigit (ptr[2])) \
+ { \
+ unsigned char decoded = X2DIGITS_TO_NUM (ptr[1], ptr[2]); \
+ if (decoded != '/') \
+ { \
+ c = decoded; \
+ ptr += 2; \
+ } \
+ } \
+} while (0)
+
+/* The inner matching engine: return true if RECORD_PATH matches
+ URL_PATH. The rules for matching are described at
+ <http://www.robotstxt.org/norobots-rfc.txt>, section 3.2.2. */
+
+static bool
+matches (const char *record_path, const char *url_path)
+{
+ const char *rp = record_path;
+ const char *up = url_path;
+
+ for (; ; ++rp, ++up)
+ {
+ char rc = *rp;
+ char uc = *up;
+ if (!rc)
+ return true;
+ if (!uc)
+ return false;
+ DECODE_MAYBE(rc, rp);
+ DECODE_MAYBE(uc, up);
+ if (rc != uc)
+ return false;
+ }
+}
+
+/* Iterate through all paths in SPECS. For the first one that
+ matches, return its allow/reject status. If none matches,
+ retrieval is by default allowed. */
+
+bool
+res_match_path (const struct robot_specs *specs, const char *path)
+{
+ int i;
+ if (!specs)
+ return true;
+ for (i = 0; i < specs->count; i++)
+ if (matches (specs->paths[i].path, path))
+ {
+ bool allowedp = specs->paths[i].allowedp;
+ DEBUGP (("%s path %s because of rule %s.\n",
+ allowedp ? "Allowing" : "Rejecting",
+ path, quote (specs->paths[i].path)));
+ return allowedp;
+ }
+ return true;
+}
+
+/* Registering the specs. */
+
+static struct hash_table *registered_specs;
+
+/* Register RES specs that below to server on HOST:PORT. They will
+ later be retrievable using res_get_specs. */
+
+void
+res_register_specs (const char *host, int port, struct robot_specs *specs)
+{
+ struct robot_specs *old;
+ char buf[256], *hp, *hp_old;
+
+ if (((unsigned) snprintf (buf, sizeof (buf), "%s:%d", host, port)) >= sizeof (buf))
+ hp = aprintf("%s:%d", host, port);
+ else
+ hp = buf;
+
+ if (!registered_specs)
+ registered_specs = make_nocase_string_hash_table (0);
+
+ if (hash_table_get_pair (registered_specs, hp, &hp_old, &old))
+ {
+ if (hp != buf)
+ xfree (hp);
+ if (old)
+ free_specs (old);
+ hash_table_put (registered_specs, hp_old, specs);
+ }
+ else
+ {
+ hash_table_put (registered_specs, hp == buf ? xstrdup (hp) : hp, specs);
+ }
+}
+
+/* Get the specs that belong to HOST:PORT. */
+
+struct robot_specs *
+res_get_specs (const char *host, int port)
+{
+ char buf[256], *hp;
+
+ if (!registered_specs)
+ return NULL;
+
+ if (((unsigned) snprintf (buf, sizeof (buf), "%s:%d", host, port)) >= sizeof (buf))
+ hp = aprintf("%s:%d", host, port);
+ else
+ hp = buf;
+
+ return hash_table_get (registered_specs, hp);
+}
+
+/* Loading the robots file. */
+
+#define RES_SPECS_LOCATION "/robots.txt"
+
+/* Retrieve the robots.txt from the server root of the server that
+ serves URL. The file will be named according to the currently
+ active rules, and the file name will be returned in *file.
+
+ Return true if robots were retrieved OK, false otherwise. */
+
+bool
+res_retrieve_file (const char *url, char **file, struct iri *iri)
+{
+ struct iri *i = iri_new ();
+ uerr_t err;
+ char *robots_url = uri_merge (url, RES_SPECS_LOCATION);
+ int saved_ts_val = opt.timestamping;
+ int saved_sp_val = opt.spider, url_err;
+ struct url * url_parsed;
+
+ /* Copy server URI encoding for a possible IDNA transformation, no need to
+ encode the full URI in UTF-8 because "robots.txt" is plain ASCII */
+ set_uri_encoding (i, iri->uri_encoding, false);
+ i->utf8_encode = false;
+
+ logputs (LOG_VERBOSE, _("Loading robots.txt; please ignore errors.\n"));
+ *file = NULL;
+ opt.timestamping = false;
+ opt.spider = false;
+
+ url_parsed = url_parse (robots_url, &url_err, i, true);
+ if (!url_parsed)
+ {
+ char *error = url_error (robots_url, url_err);
+ logprintf (LOG_NOTQUIET, "%s: %s.\n", robots_url, error);
+ xfree (error);
+ err = URLERROR;
+ }
+ else
+ {
+ err = retrieve_url (url_parsed, robots_url, file, NULL, NULL, NULL,
+ false, i, false);
+ url_free(url_parsed);
+ }
+
+ opt.timestamping = saved_ts_val;
+ opt.spider = saved_sp_val;
+ xfree (robots_url);
+ iri_free (i);
+
+ if (err != RETROK && *file != NULL)
+ {
+ /* If the file is not retrieved correctly, but retrieve_url
+ allocated the file name, deallocate is here so that the
+ caller doesn't have to worry about it. */
+ xfree (*file);
+ }
+ return err == RETROK;
+}
+
+bool
+is_robots_txt_url (const char *url)
+{
+ char *robots_url = uri_merge (url, RES_SPECS_LOCATION);
+ bool ret = are_urls_equal (url, robots_url);
+
+ xfree (robots_url);
+
+ return ret;
+}
+
+#if defined DEBUG_MALLOC || defined TESTING
+void
+res_cleanup (void)
+{
+ if (registered_specs)
+ {
+ hash_table_iterator iter;
+ for (hash_table_iterate (registered_specs, &iter);
+ hash_table_iter_next (&iter);
+ )
+ {
+ xfree (iter.key);
+ free_specs (iter.value);
+ }
+ hash_table_destroy (registered_specs);
+ registered_specs = NULL;
+ }
+}
+#endif
+
+#ifdef TESTING
+
+const char *
+test_is_robots_txt_url(void)
+{
+ unsigned i;
+ static const struct {
+ const char *url;
+ bool expected_result;
+ } test_array[] = {
+ { "http://www.yoyodyne.com/robots.txt", true },
+ { "http://www.yoyodyne.com/somepath/", false },
+ { "http://www.yoyodyne.com/somepath/robots.txt", false },
+ };
+
+ for (i = 0; i < countof(test_array); ++i)
+ {
+ mu_assert ("test_is_robots_txt_url: wrong result",
+ is_robots_txt_url (test_array[i].url) == test_array[i].expected_result);
+ }
+
+ return NULL;
+}
+
+#endif /* TESTING */
+
+/*
+ * vim: et ts=2 sw=2
+ */
diff --git a/src/res.h b/src/res.h
new file mode 100644
index 0000000..9235e39
--- /dev/null
+++ b/src/res.h
@@ -0,0 +1,50 @@
+/* Declarations for res.c.
+ Copyright (C) 2001, 2007-2011, 2015, 2018-2020 Free Software
+ Foundation, Inc.
+
+This file is part of Wget.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef RES_H
+#define RES_H
+
+struct robot_specs;
+
+struct robot_specs *res_parse (const char *, int);
+struct robot_specs *res_parse_from_file (const char *);
+
+bool res_match_path (const struct robot_specs *, const char *);
+
+void res_register_specs (const char *, int, struct robot_specs *);
+struct robot_specs *res_get_specs (const char *, int);
+
+bool res_retrieve_file (const char *, char **, struct iri *);
+
+bool is_robots_txt_url (const char *);
+
+void res_cleanup (void);
+
+#endif /* RES_H */
diff --git a/src/retr.c b/src/retr.c
new file mode 100644
index 0000000..9a17be3
--- /dev/null
+++ b/src/retr.c
@@ -0,0 +1,1561 @@
+/* File retrieval.
+ Copyright (C) 1996-2011, 2014-2015, 2018-2020 Free Software
+ Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at
+your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <assert.h>
+#ifdef VMS
+# include <unixio.h> /* For delete(). */
+#endif
+
+#ifdef HAVE_LIBZ
+# include <zlib.h>
+#endif
+
+#include "exits.h"
+#include "utils.h"
+#include "retr.h"
+#include "progress.h"
+#include "url.h"
+#include "recur.h"
+#include "ftp.h"
+#include "http.h"
+#include "host.h"
+#include "connect.h"
+#include "hash.h"
+#include "convert.h"
+#include "ptimer.h"
+#include "html-url.h"
+#include "iri.h"
+#include "hsts.h"
+
+/* Total size of downloaded files. Used to enforce quota. */
+SUM_SIZE_INT total_downloaded_bytes;
+
+/* Total download time in seconds. */
+double total_download_time;
+
+/* If non-NULL, the stream to which output should be written. This
+ stream is initialized when `-O' is used. */
+FILE *output_stream;
+
+/* Whether output_document is a regular file we can manipulate,
+ i.e. not `-' or a device file. */
+bool output_stream_regular;
+
+static struct {
+ wgint chunk_bytes;
+ double chunk_start;
+ double sleep_adjust;
+} limit_data;
+
+static void
+limit_bandwidth_reset (void)
+{
+ xzero (limit_data);
+}
+
+#ifdef HAVE_LIBZ
+static voidpf
+zalloc (voidpf opaque, unsigned int items, unsigned int size)
+{
+ (void) opaque;
+ return (voidpf) xcalloc (items, size);
+}
+
+static void
+zfree (voidpf opaque, voidpf address)
+{
+ (void) opaque;
+ xfree (address);
+}
+#endif
+
+/* Limit the bandwidth by pausing the download for an amount of time.
+ BYTES is the number of bytes received from the network, and TIMER
+ is the timer that started at the beginning of download. */
+
+static void
+limit_bandwidth (wgint bytes, struct ptimer *timer)
+{
+ double delta_t = ptimer_read (timer) - limit_data.chunk_start;
+ double expected;
+
+ limit_data.chunk_bytes += bytes;
+
+ /* Calculate the amount of time we expect downloading the chunk
+ should take. If in reality it took less time, sleep to
+ compensate for the difference. */
+ expected = (double) limit_data.chunk_bytes / opt.limit_rate;
+
+ if (expected > delta_t)
+ {
+ double slp = expected - delta_t + limit_data.sleep_adjust;
+ double t0, t1;
+ if (slp < 0.2)
+ {
+ DEBUGP (("deferring a %.2f ms sleep (%s/%.2f).\n",
+ slp * 1000, number_to_static_string (limit_data.chunk_bytes),
+ delta_t));
+ return;
+ }
+ DEBUGP (("\nsleeping %.2f ms for %s bytes, adjust %.2f ms\n",
+ slp * 1000, number_to_static_string (limit_data.chunk_bytes),
+ limit_data.sleep_adjust));
+
+ t0 = ptimer_read (timer);
+ xsleep (slp);
+ t1 = ptimer_measure (timer);
+
+ /* Due to scheduling, we probably slept slightly longer (or
+ shorter) than desired. Calculate the difference between the
+ desired and the actual sleep, and adjust the next sleep by
+ that amount. */
+ limit_data.sleep_adjust = slp - (t1 - t0);
+ /* If sleep_adjust is very large, it's likely due to suspension
+ and not clock inaccuracy. Don't enforce those. */
+ if (limit_data.sleep_adjust > 0.5)
+ limit_data.sleep_adjust = 0.5;
+ else if (limit_data.sleep_adjust < -0.5)
+ limit_data.sleep_adjust = -0.5;
+ }
+
+ limit_data.chunk_bytes = 0;
+ limit_data.chunk_start = ptimer_read (timer);
+}
+
+/* Write data in BUF to OUT. However, if *SKIP is non-zero, skip that
+ amount of data and decrease SKIP. Increment *TOTAL by the amount
+ of data written. If OUT2 is not NULL, also write BUF to OUT2.
+ In case of error writing to OUT, -2 is returned. In case of error
+ writing to OUT2, -3 is returned. Return 1 if the whole BUF was
+ skipped. */
+
+static int
+write_data (FILE *out, FILE *out2, const char *buf, int bufsize,
+ wgint *skip, wgint *written)
+{
+ if (out == NULL && out2 == NULL)
+ return 1;
+
+ if (skip)
+ {
+ if (*skip > bufsize)
+ {
+ *skip -= bufsize;
+ return 1;
+ }
+ if (*skip)
+ {
+ buf += *skip;
+ bufsize -= *skip;
+ *skip = 0;
+ if (bufsize == 0)
+ return 1;
+ }
+ }
+
+ if (out)
+ fwrite (buf, 1, bufsize, out);
+ if (out2)
+ fwrite (buf, 1, bufsize, out2);
+
+ if (written)
+ *written += bufsize;
+
+ /* Immediately flush the downloaded data. This should not hinder
+ performance: fast downloads will arrive in large 16K chunks
+ (which stdio would write out immediately anyway), and slow
+ downloads wouldn't be limited by disk speed. */
+
+ /* 2005-04-20 SMS.
+ Perhaps it shouldn't hinder performance, but it sure does, at least
+ on VMS (more than 2X). Rather than speculate on what it should or
+ shouldn't do, it might make more sense to test it. Even better, it
+ might be nice to explain what possible benefit it could offer, as
+ it appears to be a clear invitation to poor performance with no
+ actual justification. (Also, why 16K? Anyone test other values?)
+ */
+#ifndef __VMS
+ if (out)
+ fflush (out);
+ if (out2)
+ fflush (out2);
+#endif /* ndef __VMS */
+
+ if (out && ferror (out))
+ return -2;
+ else if (out2 && ferror (out2))
+ return -3;
+
+ return 0;
+}
+
+/* Read the contents of file descriptor FD until it the connection
+ terminates or a read error occurs. The data is read in portions of
+ up to 16K and written to OUT as it arrives. If opt.verbose is set,
+ the progress is shown.
+
+ TOREAD is the amount of data expected to arrive, normally only used
+ by the progress gauge.
+
+ STARTPOS is the position from which the download starts, used by
+ the progress gauge. If QTYREAD is non-NULL, the value it points to
+ is incremented by the amount of data read from the network. If
+ QTYWRITTEN is non-NULL, the value it points to is incremented by
+ the amount of data written to disk. The time it took to download
+ the data is stored to ELAPSED.
+
+ If OUT2 is non-NULL, the contents is also written to OUT2.
+ OUT2 will get an exact copy of the response: if this is a chunked
+ response, everything -- including the chunk headers -- is written
+ to OUT2. (OUT will only get the unchunked response.)
+
+ The function exits and returns the amount of data read. In case of
+ error while reading data, -1 is returned. In case of error while
+ writing data to OUT, -2 is returned. In case of error while writing
+ data to OUT2, -3 is returned. */
+
+int
+fd_read_body (const char *downloaded_filename, int fd, FILE *out, wgint toread, wgint startpos,
+
+ wgint *qtyread, wgint *qtywritten, double *elapsed, int flags,
+ FILE *out2)
+{
+ int ret = 0;
+#undef max
+#define max(a,b) ((a) > (b) ? (a) : (b))
+ int dlbufsize = max (BUFSIZ, 8 * 1024);
+ char *dlbuf = xmalloc (dlbufsize);
+
+ struct ptimer *timer = NULL;
+ double last_successful_read_tm = 0;
+
+ /* The progress gauge, set according to the user preferences. */
+ void *progress = NULL;
+
+ /* Non-zero if the progress gauge is interactive, i.e. if it can
+ continually update the display. When true, smaller timeout
+ values are used so that the gauge can update the display when
+ data arrives slowly. */
+ bool progress_interactive = false;
+
+ bool exact = !!(flags & rb_read_exactly);
+
+ /* Used only by HTTP/HTTPS chunked transfer encoding. */
+ bool chunked = flags & rb_chunked_transfer_encoding;
+ wgint skip = 0;
+
+ /* How much data we've read/written. */
+ wgint sum_read = 0;
+ wgint sum_written = 0;
+ wgint remaining_chunk_size = 0;
+
+#ifdef HAVE_LIBZ
+ /* try to minimize the number of calls to inflate() and write_data() per
+ call to fd_read() */
+ unsigned int gzbufsize = dlbufsize * 4;
+ char *gzbuf = NULL;
+ z_stream gzstream;
+
+ if (flags & rb_compressed_gzip)
+ {
+ gzbuf = xmalloc (gzbufsize);
+ if (gzbuf != NULL)
+ {
+ gzstream.zalloc = zalloc;
+ gzstream.zfree = zfree;
+ gzstream.opaque = Z_NULL;
+ gzstream.next_in = Z_NULL;
+ gzstream.avail_in = 0;
+
+ #define GZIP_DETECT 32 /* gzip format detection */
+ #define GZIP_WINDOW 15 /* logarithmic window size (default: 15) */
+ ret = inflateInit2 (&gzstream, GZIP_DETECT | GZIP_WINDOW);
+ if (ret != Z_OK)
+ {
+ xfree (gzbuf);
+ errno = (ret == Z_MEM_ERROR) ? ENOMEM : EINVAL;
+ ret = -1;
+ goto out;
+ }
+ }
+ else
+ {
+ errno = ENOMEM;
+ ret = -1;
+ goto out;
+ }
+ }
+#endif
+
+ if (flags & rb_skip_startpos)
+ skip = startpos;
+
+ if (opt.show_progress)
+ {
+ const char *filename_progress;
+ /* If we're skipping STARTPOS bytes, pass 0 as the INITIAL
+ argument to progress_create because the indicator doesn't
+ (yet) know about "skipping" data. */
+ wgint start = skip ? 0 : startpos;
+ if (opt.dir_prefix)
+ filename_progress = downloaded_filename + strlen (opt.dir_prefix) + 1;
+ else
+ filename_progress = downloaded_filename;
+ progress = progress_create (filename_progress, start, start + toread);
+ progress_interactive = progress_interactive_p (progress);
+ }
+
+ if (opt.limit_rate)
+ limit_bandwidth_reset ();
+
+ /* A timer is needed for tracking progress, for throttling, and for
+ tracking elapsed time. If either of these are requested, start
+ the timer. */
+ if (progress || opt.limit_rate || elapsed)
+ {
+ timer = ptimer_new ();
+ last_successful_read_tm = 0;
+ }
+
+ /* Use a smaller buffer for low requested bandwidths. For example,
+ with --limit-rate=2k, it doesn't make sense to slurp in 16K of
+ data and then sleep for 8s. With buffer size equal to the limit,
+ we never have to sleep for more than one second. */
+ if (opt.limit_rate && opt.limit_rate < dlbufsize)
+ dlbufsize = opt.limit_rate;
+
+ /* Read from FD while there is data to read. Normally toread==0
+ means that it is unknown how much data is to arrive. However, if
+ EXACT is set, then toread==0 means what it says: that no data
+ should be read. */
+ while (!exact || (sum_read < toread))
+ {
+ int rdsize;
+ double tmout = opt.read_timeout;
+
+ if (chunked)
+ {
+ if (remaining_chunk_size == 0)
+ {
+ char *line = fd_read_line (fd);
+ char *endl;
+ if (line == NULL)
+ {
+ ret = -1;
+ break;
+ }
+ else if (out2 != NULL)
+ fwrite (line, 1, strlen (line), out2);
+
+ remaining_chunk_size = strtol (line, &endl, 16);
+ xfree (line);
+
+ if (remaining_chunk_size < 0)
+ {
+ ret = -1;
+ break;
+ }
+
+ if (remaining_chunk_size == 0)
+ {
+ ret = 0;
+ line = fd_read_line (fd);
+ if (line == NULL)
+ ret = -1;
+ else
+ {
+ if (out2 != NULL)
+ fwrite (line, 1, strlen (line), out2);
+ xfree (line);
+ }
+ break;
+ }
+ }
+
+ rdsize = MIN (remaining_chunk_size, dlbufsize);
+ }
+ else
+ rdsize = exact ? MIN (toread - sum_read, dlbufsize) : dlbufsize;
+
+ if (progress_interactive)
+ {
+ /* For interactive progress gauges, always specify a ~1s
+ timeout, so that the gauge can be updated regularly even
+ when the data arrives very slowly or stalls. */
+ tmout = 0.95;
+ /* avoid wrong 'interactive timeout' */
+ errno = 0;
+ if (opt.read_timeout)
+ {
+ double waittm;
+ waittm = ptimer_read (timer) - last_successful_read_tm;
+ if (waittm + tmout > opt.read_timeout)
+ {
+ /* Don't let total idle time exceed read timeout. */
+ tmout = opt.read_timeout - waittm;
+ /* if 0 fd_read can be 'blocked read' */
+ if (tmout <= 0)
+ {
+ /* We've already exceeded the timeout. */
+ ret = -1, errno = ETIMEDOUT;
+ break;
+ }
+ }
+ }
+ }
+ ret = fd_read (fd, dlbuf, rdsize, tmout);
+
+ if (progress_interactive && ret < 0 && errno == ETIMEDOUT)
+ ret = 0; /* interactive timeout, handled above */
+ else if (ret <= 0)
+ break; /* EOF or read error */
+
+ if (progress || opt.limit_rate || elapsed)
+ {
+ ptimer_measure (timer);
+ if (ret > 0)
+ last_successful_read_tm = ptimer_read (timer);
+ }
+
+ if (ret > 0)
+ {
+ int write_res;
+
+ sum_read += ret;
+
+#ifdef HAVE_LIBZ
+ if (gzbuf != NULL)
+ {
+ int err;
+ int towrite;
+
+ /* Write original data to WARC file */
+ write_res = write_data (NULL, out2, dlbuf, ret, NULL, NULL);
+ if (write_res < 0)
+ {
+ ret = write_res;
+ goto out;
+ }
+
+ gzstream.avail_in = ret;
+ gzstream.next_in = (unsigned char *) dlbuf;
+
+ do
+ {
+ gzstream.avail_out = gzbufsize;
+ gzstream.next_out = (unsigned char *) gzbuf;
+
+ err = inflate (&gzstream, Z_NO_FLUSH);
+
+ switch (err)
+ {
+ case Z_MEM_ERROR:
+ errno = ENOMEM;
+ ret = -1;
+ goto out;
+ case Z_NEED_DICT:
+ case Z_DATA_ERROR:
+ errno = EINVAL;
+ ret = -1;
+ goto out;
+ case Z_STREAM_END:
+ if (exact && sum_read != toread)
+ {
+ DEBUGP(("zlib stream ended unexpectedly after "
+ "%ld/%ld bytes\n", sum_read, toread));
+ }
+ }
+
+ towrite = gzbufsize - gzstream.avail_out;
+ write_res = write_data (out, NULL, gzbuf, towrite, &skip,
+ &sum_written);
+ if (write_res < 0)
+ {
+ ret = write_res;
+ goto out;
+ }
+ }
+ while (gzstream.avail_out == 0);
+ }
+ else
+#endif
+ {
+ write_res = write_data (out, out2, dlbuf, ret, &skip,
+ &sum_written);
+ if (write_res < 0)
+ {
+ ret = write_res;
+ goto out;
+ }
+ }
+
+ if (chunked)
+ {
+ remaining_chunk_size -= ret;
+ if (remaining_chunk_size == 0)
+ {
+ char *line = fd_read_line (fd);
+ if (line == NULL)
+ {
+ ret = -1;
+ break;
+ }
+ else
+ {
+ if (out2 != NULL)
+ fwrite (line, 1, strlen (line), out2);
+ xfree (line);
+ }
+ }
+ }
+ }
+
+ if (opt.limit_rate)
+ limit_bandwidth (ret, timer);
+
+ if (progress)
+ progress_update (progress, ret, ptimer_read (timer));
+#ifdef WINDOWS
+ if (toread > 0 && opt.show_progress)
+ ws_percenttitle (100.0 *
+ (startpos + sum_read) / (startpos + toread));
+#endif
+ }
+ if (ret < -1)
+ ret = -1;
+
+ out:
+ if (progress)
+ progress_finish (progress, ptimer_read (timer));
+
+ if (timer)
+ {
+ if (elapsed)
+ *elapsed = ptimer_read (timer);
+ ptimer_destroy (timer);
+ }
+
+#ifdef HAVE_LIBZ
+ if (gzbuf != NULL)
+ {
+ int err = inflateEnd (&gzstream);
+ if (ret >= 0)
+ {
+ /* with compression enabled, ret must be 0 if successful */
+ if (err == Z_OK)
+ ret = 0;
+ else
+ {
+ errno = EINVAL;
+ ret = -1;
+ }
+ }
+ xfree (gzbuf);
+
+ if (gzstream.total_in != (uLong) sum_read)
+ {
+ DEBUGP(("zlib read size differs from raw read size (%lu/%ld)\n",
+ gzstream.total_in, sum_read));
+ }
+ }
+#endif
+
+ if (qtyread)
+ *qtyread += sum_read;
+ if (qtywritten)
+ *qtywritten += sum_written;
+
+ xfree (dlbuf);
+
+ return ret;
+}
+
+/* Read a hunk of data from FD, up until a terminator. The hunk is
+ limited by whatever the TERMINATOR callback chooses as its
+ terminator. For example, if terminator stops at newline, the hunk
+ will consist of a line of data; if terminator stops at two
+ newlines, it can be used to read the head of an HTTP response.
+ Upon determining the boundary, the function returns the data (up to
+ the terminator) in malloc-allocated storage.
+
+ In case of read error, NULL is returned. In case of EOF and no
+ data read, NULL is returned and errno set to 0. In case of having
+ read some data, but encountering EOF before seeing the terminator,
+ the data that has been read is returned, but it will (obviously)
+ not contain the terminator.
+
+ The TERMINATOR function is called with three arguments: the
+ beginning of the data read so far, the beginning of the current
+ block of peeked-at data, and the length of the current block.
+ Depending on its needs, the function is free to choose whether to
+ analyze all data or just the newly arrived data. If TERMINATOR
+ returns NULL, it means that the terminator has not been seen.
+ Otherwise it should return a pointer to the charactre immediately
+ following the terminator.
+
+ The idea is to be able to read a line of input, or otherwise a hunk
+ of text, such as the head of an HTTP request, without crossing the
+ boundary, so that the next call to fd_read etc. reads the data
+ after the hunk. To achieve that, this function does the following:
+
+ 1. Peek at incoming data.
+
+ 2. Determine whether the peeked data, along with the previously
+ read data, includes the terminator.
+
+ 2a. If yes, read the data until the end of the terminator, and
+ exit.
+
+ 2b. If no, read the peeked data and goto 1.
+
+ The function is careful to assume as little as possible about the
+ implementation of peeking. For example, every peek is followed by
+ a read. If the read returns a different amount of data, the
+ process is retried until all data arrives safely.
+
+ SIZEHINT is the buffer size sufficient to hold all the data in the
+ typical case (it is used as the initial buffer size). MAXSIZE is
+ the maximum amount of memory this function is allowed to allocate,
+ or 0 if no upper limit is to be enforced.
+
+ This function should be used as a building block for other
+ functions -- see fd_read_line as a simple example. */
+
+char *
+fd_read_hunk (int fd, hunk_terminator_t terminator, long sizehint, long maxsize)
+{
+ long bufsize = sizehint;
+ char *hunk = xmalloc (bufsize);
+ int tail = 0; /* tail position in HUNK */
+
+ assert (!maxsize || maxsize >= bufsize);
+
+ while (1)
+ {
+ const char *end;
+ int pklen, rdlen, remain;
+
+ /* First, peek at the available data. */
+
+ pklen = fd_peek (fd, hunk + tail, bufsize - 1 - tail, -1);
+ if (pklen < 0)
+ {
+ xfree (hunk);
+ return NULL;
+ }
+ end = terminator (hunk, hunk + tail, pklen);
+ if (end)
+ {
+ /* The data contains the terminator: we'll drain the data up
+ to the end of the terminator. */
+ remain = end - (hunk + tail);
+ assert (remain >= 0);
+ if (remain == 0)
+ {
+ /* No more data needs to be read. */
+ hunk[tail] = '\0';
+ return hunk;
+ }
+ if (bufsize - 1 < tail + remain)
+ {
+ bufsize = tail + remain + 1;
+ hunk = xrealloc (hunk, bufsize);
+ }
+ }
+ else
+ /* No terminator: simply read the data we know is (or should
+ be) available. */
+ remain = pklen;
+
+ /* Now, read the data. Note that we make no assumptions about
+ how much data we'll get. (Some TCP stacks are notorious for
+ read returning less data than the previous MSG_PEEK.) */
+
+ rdlen = fd_read (fd, hunk + tail, remain, 0);
+ if (rdlen < 0)
+ {
+ xfree (hunk);
+ return NULL;
+ }
+ tail += rdlen;
+ hunk[tail] = '\0';
+
+ if (rdlen == 0)
+ {
+ if (tail == 0)
+ {
+ /* EOF without anything having been read */
+ xfree (hunk);
+ errno = 0;
+ return NULL;
+ }
+ else
+ /* EOF seen: return the data we've read. */
+ return hunk;
+ }
+ if (end && rdlen == remain)
+ /* The terminator was seen and the remaining data drained --
+ we got what we came for. */
+ return hunk;
+
+ /* Keep looping until all the data arrives. */
+
+ if (tail == bufsize - 1)
+ {
+ /* Double the buffer size, but refuse to allocate more than
+ MAXSIZE bytes. */
+ if (maxsize && bufsize >= maxsize)
+ {
+ xfree (hunk);
+ errno = ENOMEM;
+ return NULL;
+ }
+ bufsize <<= 1;
+ if (maxsize && bufsize > maxsize)
+ bufsize = maxsize;
+ hunk = xrealloc (hunk, bufsize);
+ }
+ }
+}
+
+static const char *
+line_terminator (const char *start _GL_UNUSED, const char *peeked, int peeklen)
+{
+ const char *p = memchr (peeked, '\n', peeklen);
+ if (p)
+ /* p+1 because the line must include '\n' */
+ return p + 1;
+ return NULL;
+}
+
+/* The maximum size of the single line we agree to accept. This is
+ not meant to impose an arbitrary limit, but to protect the user
+ from Wget slurping up available memory upon encountering malicious
+ or buggy server output. Define it to 0 to remove the limit. */
+#define FD_READ_LINE_MAX 4096
+
+/* Read one line from FD and return it. The line is allocated using
+ malloc, but is never larger than FD_READ_LINE_MAX.
+
+ If an error occurs, or if no data can be read, NULL is returned.
+ In the former case errno indicates the error condition, and in the
+ latter case, errno is NULL. */
+
+char *
+fd_read_line (int fd)
+{
+ return fd_read_hunk (fd, line_terminator, 128, FD_READ_LINE_MAX);
+}
+
+/* Return a printed representation of the download rate, along with
+ the units appropriate for the download speed. */
+
+const char *
+retr_rate (wgint bytes, double secs)
+{
+ static char res[20];
+ static const char *rate_names[] = {"B/s", "KB/s", "MB/s", "GB/s" };
+ static const char *rate_names_bits[] = {"b/s", "Kb/s", "Mb/s", "Gb/s" };
+ int units;
+
+ double dlrate = calc_rate (bytes, secs, &units);
+ /* Use more digits for smaller numbers (regardless of unit used),
+ e.g. "1022", "247", "12.5", "2.38". */
+ snprintf (res, sizeof(res), "%.*f %s",
+ dlrate >= 99.95 ? 0 : dlrate >= 9.995 ? 1 : 2,
+ dlrate, !opt.report_bps ? rate_names[units]: rate_names_bits[units]);
+
+ return res;
+}
+
+/* Calculate the download rate and trim it as appropriate for the
+ speed. Appropriate means that if rate is greater than 1K/s,
+ kilobytes are used, and if rate is greater than 1MB/s, megabytes
+ are used.
+
+ UNITS is zero for B/s, one for KB/s, two for MB/s, and three for
+ GB/s. */
+
+double
+calc_rate (wgint bytes, double secs, int *units)
+{
+ double dlrate;
+ double bibyte;
+
+ if (!opt.report_bps)
+ bibyte = 1024.0;
+ else
+ bibyte = 1000.0;
+
+ if (secs == 0)
+ /* If elapsed time is exactly zero, it means we're under the
+ resolution of the timer. This can easily happen on systems
+ that use time() for the timer. Since the interval lies between
+ 0 and the timer's resolution, assume half the resolution. */
+ secs = ptimer_resolution () / 2.0;
+
+ dlrate = secs ? convert_to_bits (bytes) / secs : 0;
+ if (dlrate < bibyte)
+ *units = 0;
+ else if (dlrate < (bibyte * bibyte))
+ *units = 1, dlrate /= bibyte;
+ else if (dlrate < (bibyte * bibyte * bibyte))
+ *units = 2, dlrate /= (bibyte * bibyte);
+ else if (dlrate < (bibyte * bibyte * bibyte * bibyte))
+ *units = 3, dlrate /= (bibyte * bibyte * bibyte);
+ else {
+ *units = 4, dlrate /= (bibyte * bibyte * bibyte * bibyte);
+ if (dlrate > 99.99)
+ dlrate = 99.99; // upper limit 99.99TB/s
+ }
+
+ return dlrate;
+}
+
+
+#define SUSPEND_METHOD do { \
+ method_suspended = true; \
+ saved_body_data = opt.body_data; \
+ saved_body_file_name = opt.body_file; \
+ saved_method = opt.method; \
+ opt.body_data = NULL; \
+ opt.body_file = NULL; \
+ opt.method = NULL; \
+} while (0)
+
+#define RESTORE_METHOD do { \
+ if (method_suspended) \
+ { \
+ opt.body_data = saved_body_data; \
+ opt.body_file = saved_body_file_name; \
+ opt.method = saved_method; \
+ method_suspended = false; \
+ } \
+} while (0)
+
+static char *getproxy (struct url *);
+
+/* Retrieve the given URL. Decides which loop to call -- HTTP, FTP,
+ FTP, proxy, etc. */
+
+/* #### This function should be rewritten so it doesn't return from
+ multiple points. */
+
+uerr_t
+retrieve_url (struct url * orig_parsed, const char *origurl, char **file,
+ char **newloc, const char *refurl, int *dt, bool recursive,
+ struct iri *iri, bool register_status)
+{
+ uerr_t result;
+ char *url;
+ bool location_changed;
+ bool iri_fallbacked = 0;
+ int dummy;
+ char *mynewloc, *proxy;
+ struct url *u = orig_parsed, *proxy_url;
+ int up_error_code; /* url parse error code */
+ char *local_file = NULL;
+ int redirection_count = 0;
+
+ bool method_suspended = false;
+ char *saved_body_data = NULL;
+ char *saved_method = NULL;
+ char *saved_body_file_name = NULL;
+
+ /* If dt is NULL, use local storage. */
+ if (!dt)
+ {
+ dt = &dummy;
+ dummy = 0;
+ }
+ url = xstrdup (origurl);
+ if (newloc)
+ *newloc = NULL;
+ if (file)
+ *file = NULL;
+
+ if (!refurl)
+ refurl = opt.referer;
+
+ redirected:
+ /* (also for IRI fallbacking) */
+
+ result = NOCONERROR;
+ mynewloc = NULL;
+ xfree(local_file);
+ proxy_url = NULL;
+
+ proxy = getproxy (u);
+ if (proxy)
+ {
+ struct iri *pi = iri_new ();
+ set_uri_encoding (pi, opt.locale, true);
+ pi->utf8_encode = false;
+
+ /* Parse the proxy URL. */
+ proxy_url = url_parse (proxy, &up_error_code, pi, true);
+ if (!proxy_url)
+ {
+ char *error = url_error (proxy, up_error_code);
+ logprintf (LOG_NOTQUIET, _("Error parsing proxy URL %s: %s.\n"),
+ proxy, error);
+ xfree (url);
+ xfree (error);
+ xfree (proxy);
+ iri_free (pi);
+ RESTORE_METHOD;
+ result = PROXERR;
+ if (orig_parsed != u)
+ url_free (u);
+ goto bail;
+ }
+ if (proxy_url->scheme != SCHEME_HTTP && proxy_url->scheme != u->scheme)
+ {
+ logprintf (LOG_NOTQUIET, _("Error in proxy URL %s: Must be HTTP.\n"), proxy);
+ url_free (proxy_url);
+ xfree (url);
+ xfree (proxy);
+ iri_free (pi);
+ RESTORE_METHOD;
+ result = PROXERR;
+ if (orig_parsed != u)
+ url_free (u);
+ goto bail;
+ }
+ iri_free(pi);
+ xfree (proxy);
+ }
+
+ if (u->scheme == SCHEME_HTTP
+#ifdef HAVE_SSL
+ || u->scheme == SCHEME_HTTPS
+#endif
+ || (proxy_url && proxy_url->scheme == SCHEME_HTTP))
+ {
+#ifdef HAVE_HSTS
+#ifdef TESTING
+ /* we don't link against main.o when we're testing */
+ hsts_store_t hsts_store = NULL;
+#else
+ extern hsts_store_t hsts_store;
+#endif
+
+ if (opt.hsts && hsts_store)
+ {
+ if (hsts_match (hsts_store, u))
+ logprintf (LOG_VERBOSE, "URL transformed to HTTPS due to an HSTS policy\n");
+ }
+#endif
+ result = http_loop (u, orig_parsed, &mynewloc, &local_file, refurl, dt,
+ proxy_url, iri);
+ }
+ else if (u->scheme == SCHEME_FTP
+#ifdef HAVE_SSL
+ || u->scheme == SCHEME_FTPS
+#endif
+ )
+ {
+ /* If this is a redirection, temporarily turn off opt.ftp_glob
+ and opt.recursive, both being undesirable when following
+ redirects. */
+ bool oldrec = recursive, glob = opt.ftp_glob;
+ if (redirection_count)
+ oldrec = glob = false;
+
+ result = ftp_loop (u, orig_parsed, &local_file, dt, proxy_url,
+ recursive, glob);
+ recursive = oldrec;
+
+ /* There is a possibility of having HTTP being redirected to
+ FTP. In these cases we must decide whether the text is HTML
+ according to the suffix. The HTML suffixes are `.html',
+ `.htm' and a few others, case-insensitive. */
+ if (redirection_count && local_file && (u->scheme == SCHEME_FTP
+#ifdef HAVE_SSL
+ || u->scheme == SCHEME_FTPS
+#endif
+ ))
+ {
+ if (has_html_suffix_p (local_file))
+ *dt |= TEXTHTML;
+ }
+ }
+
+ if (proxy_url)
+ {
+ url_free (proxy_url);
+ proxy_url = NULL;
+ }
+
+ location_changed = (result == NEWLOCATION || result == NEWLOCATION_KEEP_POST);
+ if (location_changed)
+ {
+ char *construced_newloc;
+ struct url *newloc_parsed;
+
+ assert (mynewloc != NULL);
+
+ xfree (local_file);
+
+ /* The HTTP specs only allow absolute URLs to appear in
+ redirects, but a ton of boneheaded webservers and CGIs out
+ there break the rules and use relative URLs, and popular
+ browsers are lenient about this, so wget should be too. */
+ construced_newloc = uri_merge (url, mynewloc ? mynewloc : "");
+ xfree (mynewloc);
+ mynewloc = construced_newloc;
+
+#ifdef ENABLE_IRI
+ /* Reset UTF-8 encoding state, set the URI encoding and reset
+ the content encoding. */
+ iri->utf8_encode = opt.enable_iri;
+ if (opt.encoding_remote)
+ set_uri_encoding (iri, opt.encoding_remote, true);
+ set_content_encoding (iri, NULL);
+ xfree (iri->orig_url);
+#endif
+
+ /* Now, see if this new location makes sense. */
+ newloc_parsed = url_parse (mynewloc, &up_error_code, iri, true);
+ if (!newloc_parsed)
+ {
+ char *error = url_error (mynewloc, up_error_code);
+ logprintf (LOG_NOTQUIET, "%s: %s.\n", escnonprint_uri (mynewloc),
+ error);
+ if (orig_parsed != u)
+ {
+ url_free (u);
+ }
+ xfree (url);
+ xfree (mynewloc);
+ xfree (error);
+ RESTORE_METHOD;
+ goto bail;
+ }
+
+ /* Now mynewloc will become newloc_parsed->url, because if the
+ Location contained relative paths like .././something, we
+ don't want that propagating as url. */
+ xfree (mynewloc);
+ mynewloc = xstrdup (newloc_parsed->url);
+
+ /* Check for max. number of redirections. */
+ if (++redirection_count > opt.max_redirect)
+ {
+ logprintf (LOG_NOTQUIET, _("%d redirections exceeded.\n"),
+ opt.max_redirect);
+ url_free (newloc_parsed);
+ if (orig_parsed != u)
+ {
+ url_free (u);
+ }
+ xfree (url);
+ xfree (mynewloc);
+ RESTORE_METHOD;
+ result = WRONGCODE;
+ goto bail;
+ }
+
+ xfree (url);
+ url = mynewloc;
+ if (orig_parsed != u)
+ {
+ url_free (u);
+ }
+ u = newloc_parsed;
+
+ /* If we're being redirected from POST, and we received a
+ redirect code different than 307, we don't want to POST
+ again. Many requests answer POST with a redirection to an
+ index page; that redirection is clearly a GET. We "suspend"
+ POST data for the duration of the redirections, and restore
+ it when we're done.
+
+ RFC2616 HTTP/1.1 introduces code 307 Temporary Redirect
+ specifically to preserve the method of the request.
+ */
+ if (result != NEWLOCATION_KEEP_POST && !method_suspended)
+ SUSPEND_METHOD;
+
+ goto redirected;
+ }
+ else
+ {
+ xfree(mynewloc);
+ }
+
+ /* Try to not encode in UTF-8 if fetching failed */
+ if (!(*dt & RETROKF) && iri->utf8_encode)
+ {
+ iri->utf8_encode = false;
+ if (orig_parsed != u)
+ {
+ url_free (u);
+ }
+ u = url_parse (origurl, NULL, iri, true);
+ if (u)
+ {
+ if (strcmp(u->url, orig_parsed->url))
+ {
+ DEBUGP (("[IRI fallbacking to non-utf8 for %s\n", quote (url)));
+ xfree (url);
+ url = xstrdup (u->url);
+ iri_fallbacked = 1;
+ goto redirected;
+ }
+ else
+ DEBUGP (("[Needn't fallback to non-utf8 for %s\n", quote (url)));
+ }
+ else
+ DEBUGP (("[Couldn't fallback to non-utf8 for %s\n", quote (url)));
+ }
+
+ if (local_file && u && (*dt & RETROKF || opt.content_on_error))
+ {
+ register_download (u->url, local_file);
+
+ if (!opt.spider && redirection_count && 0 != strcmp (origurl, u->url))
+ register_redirection (origurl, u->url);
+
+ if (*dt & TEXTHTML)
+ register_html (local_file);
+
+ if (*dt & TEXTCSS)
+ register_css (local_file);
+ }
+
+ if (file)
+ *file = local_file ? local_file : NULL;
+ else
+ xfree (local_file);
+
+ if (orig_parsed != u)
+ url_free (u);
+
+ if (redirection_count || iri_fallbacked)
+ {
+ if (newloc)
+ *newloc = url;
+ else
+ xfree (url);
+ }
+ else
+ {
+ if (newloc)
+ *newloc = NULL;
+ xfree (url);
+ }
+
+ RESTORE_METHOD;
+
+bail:
+ if (register_status)
+ inform_exit_status (result);
+
+ return result;
+}
+
+/* Find the URLs in the file and call retrieve_url() for each of them.
+ If HTML is true, treat the file as HTML, and construct the URLs
+ accordingly.
+
+ If opt.recursive is set, call retrieve_tree() for each file. */
+
+uerr_t
+retrieve_from_file (const char *file, bool html, int *count)
+{
+ uerr_t status;
+ struct urlpos *url_list, *cur_url;
+ struct iri *iri = iri_new();
+
+ char *input_file, *url_file = NULL;
+ const char *url = file;
+
+ status = RETROK; /* Suppose everything is OK. */
+ *count = 0; /* Reset the URL count. */
+
+ /* sXXXav : Assume filename and links in the file are in the locale */
+ set_uri_encoding (iri, opt.locale, true);
+ set_content_encoding (iri, opt.locale);
+
+ if (url_valid_scheme (url))
+ {
+ int dt,url_err;
+ struct url *url_parsed = url_parse (url, &url_err, iri, true);
+ if (!url_parsed)
+ {
+ char *error = url_error (url, url_err);
+ logprintf (LOG_NOTQUIET, "%s: %s.\n", url, error);
+ xfree (error);
+ iri_free (iri);
+ return URLERROR;
+ }
+
+ if (!opt.base_href)
+ opt.base_href = xstrdup (url);
+
+ status = retrieve_url (url_parsed, url, &url_file, NULL, NULL, &dt,
+ false, iri, true);
+ url_free (url_parsed);
+
+ if (!url_file || (status != RETROK))
+ return status;
+
+ if (dt & TEXTHTML)
+ html = true;
+
+#ifdef ENABLE_IRI
+ /* If we have a found a content encoding, use it.
+ * ( == is okay, because we're checking for identical object) */
+ if (iri->content_encoding != opt.locale)
+ set_uri_encoding (iri, iri->content_encoding, false);
+#endif
+
+ /* Reset UTF-8 encode status */
+ iri->utf8_encode = opt.enable_iri;
+ xfree (iri->orig_url);
+
+ input_file = url_file;
+ }
+ else
+ input_file = (char *) file;
+
+ url_list = (html ? get_urls_html (input_file, NULL, NULL, iri)
+ : get_urls_file (input_file));
+
+ xfree (url_file);
+
+ for (cur_url = url_list; cur_url; cur_url = cur_url->next, ++*count)
+ {
+ char *filename = NULL, *new_file = NULL, *proxy;
+ int dt = 0;
+ struct iri *tmpiri = iri_dup (iri);
+ struct url *parsed_url = NULL;
+
+ if (cur_url->ignore_when_downloading)
+ continue;
+
+ if (opt.quota && total_downloaded_bytes > opt.quota)
+ {
+ status = QUOTEXC;
+ break;
+ }
+
+ parsed_url = url_parse (cur_url->url->url, NULL, tmpiri, true);
+
+ proxy = getproxy (cur_url->url);
+ if ((opt.recursive || opt.page_requisites)
+ && ((cur_url->url->scheme != SCHEME_FTP
+#ifdef HAVE_SSL
+ && cur_url->url->scheme != SCHEME_FTPS
+#endif
+ ) || proxy))
+ {
+ int old_follow_ftp = opt.follow_ftp;
+
+ /* Turn opt.follow_ftp on in case of recursive FTP retrieval */
+ if (cur_url->url->scheme == SCHEME_FTP
+#ifdef HAVE_SSL
+ || cur_url->url->scheme == SCHEME_FTPS
+#endif
+ )
+ opt.follow_ftp = 1;
+
+ status = retrieve_tree (parsed_url ? parsed_url : cur_url->url,
+ tmpiri);
+
+ opt.follow_ftp = old_follow_ftp;
+ }
+ else
+ status = retrieve_url (parsed_url ? parsed_url : cur_url->url,
+ cur_url->url->url, &filename,
+ &new_file, NULL, &dt, opt.recursive, tmpiri,
+ true);
+ xfree (proxy);
+
+ if (parsed_url)
+ url_free (parsed_url);
+
+ if (filename && opt.delete_after && file_exists_p (filename, NULL))
+ {
+ DEBUGP (("\
+Removing file due to --delete-after in retrieve_from_file():\n"));
+ logprintf (LOG_VERBOSE, _("Removing %s.\n"), filename);
+ if (unlink (filename))
+ logprintf (LOG_NOTQUIET, "Failed to unlink %s: (%d) %s\n", filename, errno, strerror (errno));
+ dt &= ~RETROKF;
+ }
+
+ xfree (new_file);
+ xfree (filename);
+ iri_free (tmpiri);
+ }
+
+ /* Free the linked list of URL-s. */
+ free_urlpos (url_list);
+
+ iri_free (iri);
+
+ return status;
+}
+
+/* Print `giving up', or `retrying', depending on the impending
+ action. N1 and N2 are the attempt number and the attempt limit. */
+void
+printwhat (int n1, int n2)
+{
+ logputs (LOG_VERBOSE, (n1 == n2) ? _("Giving up.\n\n") : _("Retrying.\n\n"));
+}
+
+/* If opt.wait or opt.waitretry are specified, and if certain
+ conditions are met, sleep the appropriate number of seconds. See
+ the documentation of --wait and --waitretry for more information.
+
+ COUNT is the count of current retrieval, beginning with 1. */
+
+void
+sleep_between_retrievals (int count)
+{
+ static bool first_retrieval = true;
+
+ if (first_retrieval)
+ {
+ /* Don't sleep before the very first retrieval. */
+ first_retrieval = false;
+ return;
+ }
+
+ if (opt.waitretry && count > 1)
+ {
+ /* If opt.waitretry is specified and this is a retry, wait for
+ COUNT-1 number of seconds, or for opt.waitretry seconds. */
+ if (count <= opt.waitretry)
+ xsleep (count - 1);
+ else
+ xsleep (opt.waitretry);
+ }
+ else if (opt.wait)
+ {
+ if (!opt.random_wait || count > 1)
+ /* If random-wait is not specified, or if we are sleeping
+ between retries of the same download, sleep the fixed
+ interval. */
+ xsleep (opt.wait);
+ else
+ {
+ /* Sleep a random amount of time averaging in opt.wait
+ seconds. The sleeping amount ranges from 0.5*opt.wait to
+ 1.5*opt.wait. */
+ double waitsecs = (0.5 + random_float ()) * opt.wait;
+ DEBUGP (("sleep_between_retrievals: avg=%f,sleep=%f\n",
+ opt.wait, waitsecs));
+ xsleep (waitsecs);
+ }
+ }
+}
+
+/* Free the linked list of urlpos. */
+void
+free_urlpos (struct urlpos *l)
+{
+ while (l)
+ {
+ struct urlpos *next = l->next;
+ if (l->url)
+ url_free (l->url);
+ xfree (l->local_name);
+ xfree (l);
+ l = next;
+ }
+}
+
+/* Rotate FNAME opt.backups times */
+void
+rotate_backups(const char *fname)
+{
+#ifdef __VMS
+# define SEP "_"
+# define AVS ";*" /* All-version suffix. */
+# define AVSL (sizeof (AVS) - 1)
+#else
+# define SEP "."
+# define AVSL 0
+#endif
+
+ /* avoid alloca() here */
+ char from[1024], to[1024];
+ struct stat sb;
+ bool overflow;
+ int i;
+
+ if (stat (fname, &sb) == 0)
+ if (S_ISREG (sb.st_mode) == 0)
+ return;
+
+ for (i = opt.backups; i > 1; i--)
+ {
+#ifdef VMS
+ /* Delete (all versions of) any existing max-suffix file, to avoid
+ * creating multiple versions of it. (On VMS, rename() will
+ * create a new version of an existing destination file, not
+ * destroy/overwrite it.)
+ */
+ if (i == opt.backups)
+ {
+ if (((unsigned) snprintf (to, sizeof (to), "%s%s%d%s", fname, SEP, i, AVS)) >= sizeof (to))
+ logprintf (LOG_NOTQUIET, "Failed to delete %s: File name truncation\n", to);
+ else
+ delete (to);
+ }
+#endif
+ if ((overflow = ((unsigned) snprintf (to, sizeof (to), "%s%s%d", fname, SEP, i)) >= sizeof (to)))
+ errno = ENAMETOOLONG;
+ else if ((overflow = ((unsigned) snprintf (from, sizeof (from), "%s%s%d", fname, SEP, i - 1)) >= sizeof (from)))
+ errno = ENAMETOOLONG;
+ if (overflow || rename (from, to))
+ logprintf (LOG_NOTQUIET, "Failed to rename %s to %s: (%d) %s\n",
+ from, to, errno, strerror (errno));
+ }
+
+ if ((overflow = ((unsigned) snprintf (to, sizeof (to), "%s%s%d", fname, SEP, 1)) >= sizeof (to)))
+ errno = ENAMETOOLONG;
+ if (overflow || rename(fname, to))
+ logprintf (LOG_NOTQUIET, "Failed to rename %s to %s: (%d) %s\n",
+ fname, to, errno, strerror (errno));
+}
+
+static bool no_proxy_match (const char *, const char **);
+
+/* Return the URL of the proxy appropriate for url U. */
+
+static char *
+getproxy (struct url *u)
+{
+ char *proxy = NULL;
+ char *rewritten_url;
+
+ if (!opt.use_proxy)
+ return NULL;
+ if (no_proxy_match (u->host, (const char **)opt.no_proxy))
+ return NULL;
+
+ switch (u->scheme)
+ {
+ case SCHEME_HTTP:
+ proxy = opt.http_proxy ? opt.http_proxy : getenv ("http_proxy");
+ break;
+#ifdef HAVE_SSL
+ case SCHEME_HTTPS:
+ proxy = opt.https_proxy ? opt.https_proxy : getenv ("https_proxy");
+ break;
+ case SCHEME_FTPS:
+ proxy = opt.ftp_proxy ? opt.ftp_proxy : getenv ("ftps_proxy");
+ break;
+#endif
+ case SCHEME_FTP:
+ proxy = opt.ftp_proxy ? opt.ftp_proxy : getenv ("ftp_proxy");
+ break;
+ case SCHEME_INVALID:
+ break;
+ }
+ if (!proxy || !*proxy)
+ return NULL;
+
+ /* Handle shorthands. `rewritten_storage' is a kludge to allow
+ getproxy() to return static storage. */
+ rewritten_url = rewrite_shorthand_url (proxy);
+ if (rewritten_url)
+ return rewritten_url;
+
+ return strdup(proxy);
+}
+
+/* Returns true if URL would be downloaded through a proxy. */
+
+bool
+url_uses_proxy (struct url * u)
+{
+ bool ret;
+ char *proxy;
+
+ if (!u)
+ return false;
+ proxy = getproxy (u);
+ ret = proxy != NULL;
+ xfree (proxy);
+ return ret;
+}
+
+/* Should a host be accessed through proxy, concerning no_proxy? */
+static bool
+no_proxy_match (const char *host, const char **no_proxy)
+{
+ if (!no_proxy)
+ return false;
+ else
+ return sufmatch (no_proxy, host);
+}
+
+/* Set the file parameter to point to the local file string. */
+void
+set_local_file (const char **file, const char *default_file)
+{
+ if (opt.output_document)
+ {
+ if (output_stream_regular)
+ *file = opt.output_document;
+ }
+ else
+ *file = default_file;
+}
+
+/* Return true for an input file's own URL, false otherwise. */
+bool
+input_file_url (const char *input_file)
+{
+ static bool first = true;
+
+ if (input_file
+ && url_has_scheme (input_file)
+ && first)
+ {
+ first = false;
+ return true;
+ }
+ else
+ return false;
+}
diff --git a/src/retr.h b/src/retr.h
new file mode 100644
index 0000000..9da2a27
--- /dev/null
+++ b/src/retr.h
@@ -0,0 +1,81 @@
+/* Declarations for retr.c.
+ Copyright (C) 1996-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef RETR_H
+#define RETR_H
+
+#include "url.h"
+
+extern int numurls;
+
+/* These global vars should be made static to retr.c and exported via
+ functions! */
+extern SUM_SIZE_INT total_downloaded_bytes;
+extern double total_download_time;
+extern FILE *output_stream;
+extern bool output_stream_regular;
+
+/* Flags for fd_read_body. */
+enum {
+ rb_read_exactly = 1,
+ rb_skip_startpos = 2,
+
+ /* Used by HTTP/HTTPS*/
+ rb_chunked_transfer_encoding = 4,
+
+ rb_compressed_gzip = 8
+};
+
+int fd_read_body (const char *, int, FILE *, wgint, wgint, wgint *, wgint *, double *, int, FILE *);
+
+typedef const char *(*hunk_terminator_t) (const char *, const char *, int);
+
+char *fd_read_hunk (int, hunk_terminator_t, long, long);
+char *fd_read_line (int);
+
+uerr_t retrieve_url (struct url *, const char *, char **, char **,
+ const char *, int *, bool, struct iri *, bool);
+uerr_t retrieve_from_file (const char *, bool, int *);
+
+const char *retr_rate (wgint, double);
+double calc_rate (wgint, double, int *);
+void printwhat (int, int);
+
+void sleep_between_retrievals (int);
+
+void rotate_backups (const char *);
+
+bool url_uses_proxy (struct url *);
+
+void set_local_file (const char **, const char *);
+
+bool input_file_url (const char *);
+
+#endif /* RETR_H */
diff --git a/src/spider.c b/src/spider.c
new file mode 100644
index 0000000..8727185
--- /dev/null
+++ b/src/spider.c
@@ -0,0 +1,101 @@
+/* Keep track of visited URLs in spider mode.
+ Copyright (C) 2006-2011, 2015, 2019-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+#include <stdio.h>
+#include <errno.h>
+#include <assert.h>
+
+#include "spider.h"
+#include "url.h"
+#include "utils.h"
+#include "hash.h"
+#include "res.h"
+
+
+static struct hash_table *nonexisting_urls_set;
+
+/* Cleanup the data structures associated with this file. */
+
+#if defined DEBUG_MALLOC || defined TESTING
+void
+spider_cleanup (void)
+{
+ if (nonexisting_urls_set)
+ string_set_free (nonexisting_urls_set);
+}
+#endif
+
+/* Remembers broken links. */
+void
+nonexisting_url (const char *url)
+{
+ /* Ignore robots.txt URLs */
+ if (is_robots_txt_url (url))
+ return;
+ if (!nonexisting_urls_set)
+ nonexisting_urls_set = make_string_hash_table (0);
+ string_set_add (nonexisting_urls_set, url);
+}
+
+void
+print_broken_links (void)
+{
+ hash_table_iterator iter;
+ int num_elems;
+
+ if (!nonexisting_urls_set)
+ {
+ logprintf (LOG_NOTQUIET, _("Found no broken links.\n\n"));
+ return;
+ }
+
+ num_elems = hash_table_count (nonexisting_urls_set);
+ assert (num_elems > 0);
+
+ logprintf (LOG_NOTQUIET, ngettext("Found %d broken link.\n\n",
+ "Found %d broken links.\n\n", num_elems),
+ num_elems);
+
+ for (hash_table_iterate (nonexisting_urls_set, &iter);
+ hash_table_iter_next (&iter); )
+ {
+ /* Struct url_list *list; */
+ const char *url = (const char *) iter.key;
+
+ logprintf (LOG_NOTQUIET, _("%s\n"), url);
+ }
+ logputs (LOG_NOTQUIET, "\n");
+}
+
+/*
+ * vim: et ts=2 sw=2
+ */
diff --git a/src/spider.h b/src/spider.h
new file mode 100644
index 0000000..48e0ae8
--- /dev/null
+++ b/src/spider.h
@@ -0,0 +1,39 @@
+/* Declarations for spider.c
+ Copyright (C) 2006-2011, 2015, 2019-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef SPIDER_H
+#define SPIDER_H
+
+#define visited_url(a,b)
+void nonexisting_url (const char *);
+void print_broken_links (void);
+void spider_cleanup (void);
+
+#endif /* SPIDER_H */
diff --git a/src/ssl.h b/src/ssl.h
new file mode 100644
index 0000000..e348252
--- /dev/null
+++ b/src/ssl.h
@@ -0,0 +1,40 @@
+/* SSL support.
+ Copyright (C) 2000-2012, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+ Originally contributed by Christian Fraenkel.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along
+with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef GEN_SSLFUNC_H
+#define GEN_SSLFUNC_H
+
+bool ssl_init (void);
+void ssl_cleanup (void);
+bool ssl_connect_wget (int, const char *, int *);
+bool ssl_check_certificate (int, const char *);
+
+#endif /* GEN_SSLFUNC_H */
diff --git a/src/sysdep.h b/src/sysdep.h
new file mode 100644
index 0000000..f623e8d
--- /dev/null
+++ b/src/sysdep.h
@@ -0,0 +1,59 @@
+/* Dirty system-dependent hacks.
+ Copyright (C) 1996-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at
+your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+/* This file is included by wget.h. Random .c files need not include
+ it. */
+
+#ifndef SYSDEP_H
+#define SYSDEP_H
+
+/* Provided by gnulib on systems that don't have it: */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdint.h>
+#include <inttypes.h>
+
+#ifdef WINDOWS
+/* Windows doesn't have some functions normally found on Unix-like
+ systems, such as strcasecmp, strptime, etc. Include mswindows.h so
+ we get the declarations for their replacements in mswindows.c, as
+ well as to pick up Windows-specific includes and constants. To be
+ able to test for such features, the file must be included as early
+ as possible. */
+# include "mswindows.h"
+#endif
+
+#include <stdbool.h>
+#include <limits.h>
+#include <fnmatch.h>
+#include "intprops.h"
+
+#endif /* SYSDEP_H */
diff --git a/src/url.c b/src/url.c
new file mode 100644
index 0000000..950002b
--- /dev/null
+++ b/src/url.c
@@ -0,0 +1,2540 @@
+/* URL handling.
+ Copyright (C) 1996-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at
+your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <assert.h>
+
+#include "utils.h"
+#include "url.h"
+#include "host.h" /* for is_valid_ipv6_address */
+#include "c-strcase.h"
+
+#ifdef HAVE_ICONV
+# include <iconv.h>
+#endif
+#include <langinfo.h>
+
+#ifdef __VMS
+#include "vms.h"
+#endif /* def __VMS */
+
+#ifdef TESTING
+#include "../tests/unit-tests.h"
+#endif
+
+enum {
+ scm_disabled = 1, /* for https when OpenSSL fails to init. */
+ scm_has_params = 2, /* whether scheme has ;params */
+ scm_has_query = 4, /* whether scheme has ?query */
+ scm_has_fragment = 8 /* whether scheme has #fragment */
+};
+
+struct scheme_data
+{
+ /* Short name of the scheme, such as "http" or "ftp". */
+ const char *name;
+ /* Leading string that identifies the scheme, such as "https://". */
+ const char *leading_string;
+ /* Default port of the scheme when none is specified. */
+ int default_port;
+ /* Various flags. */
+ int flags;
+};
+
+/* Supported schemes: */
+static struct scheme_data supported_schemes[] =
+{
+ { "http", "http://", DEFAULT_HTTP_PORT, scm_has_query|scm_has_fragment },
+#ifdef HAVE_SSL
+ { "https", "https://", DEFAULT_HTTPS_PORT, scm_has_query|scm_has_fragment },
+#endif
+ { "ftp", "ftp://", DEFAULT_FTP_PORT, scm_has_params|scm_has_fragment },
+#ifdef HAVE_SSL
+ /*
+ * Explicit FTPS uses the same port as FTP.
+ * Implicit FTPS has its own port (990), but it is disabled by default.
+ */
+ { "ftps", "ftps://", DEFAULT_FTP_PORT, scm_has_params|scm_has_fragment },
+#endif
+
+ /* SCHEME_INVALID */
+ { NULL, NULL, -1, 0 }
+};
+
+/* Forward declarations: */
+
+static bool path_simplify (enum url_scheme, char *);
+
+/* Support for escaping and unescaping of URL strings. */
+
+/* Table of "reserved" and "unsafe" characters. Those terms are
+ rfc1738-speak, as such largely obsoleted by rfc2396 and later
+ specs, but the general idea remains.
+
+ A reserved character is the one that you can't decode without
+ changing the meaning of the URL. For example, you can't decode
+ "/foo/%2f/bar" into "/foo///bar" because the number and contents of
+ path components is different. Non-reserved characters can be
+ changed, so "/foo/%78/bar" is safe to change to "/foo/x/bar". The
+ unsafe characters are loosely based on rfc1738, plus "$" and ",",
+ as recommended by rfc2396, and minus "~", which is very frequently
+ used (and sometimes unrecognized as %7E by broken servers).
+
+ An unsafe character is the one that should be encoded when URLs are
+ placed in foreign environments. E.g. space and newline are unsafe
+ in HTTP contexts because HTTP uses them as separator and line
+ terminator, so they must be encoded to %20 and %0A respectively.
+ "*" is unsafe in shell context, etc.
+
+ We determine whether a character is unsafe through static table
+ lookup. This code assumes ASCII character set and 8-bit chars. */
+
+enum {
+ /* rfc1738 reserved chars + "$" and ",". */
+ urlchr_reserved = 1,
+
+ /* rfc1738 unsafe chars, plus non-printables. */
+ urlchr_unsafe = 2
+};
+
+#define urlchr_test(c, mask) (urlchr_table[(unsigned char)(c)] & (mask))
+#define URL_RESERVED_CHAR(c) urlchr_test(c, urlchr_reserved)
+#define URL_UNSAFE_CHAR(c) urlchr_test(c, urlchr_unsafe)
+
+/* Shorthands for the table: */
+#define R urlchr_reserved
+#define U urlchr_unsafe
+#define RU R|U
+
+static const unsigned char urlchr_table[256] =
+{
+ U, U, U, U, U, U, U, U, /* NUL SOH STX ETX EOT ENQ ACK BEL */
+ U, U, U, U, U, U, U, U, /* BS HT LF VT FF CR SO SI */
+ U, U, U, U, U, U, U, U, /* DLE DC1 DC2 DC3 DC4 NAK SYN ETB */
+ U, U, U, U, U, U, U, U, /* CAN EM SUB ESC FS GS RS US */
+ U, 0, U, RU, R, U, R, 0, /* SP ! " # $ % & ' */
+ 0, 0, 0, R, R, 0, 0, R, /* ( ) * + , - . / */
+ 0, 0, 0, 0, 0, 0, 0, 0, /* 0 1 2 3 4 5 6 7 */
+ 0, 0, RU, R, U, R, U, R, /* 8 9 : ; < = > ? */
+ RU, 0, 0, 0, 0, 0, 0, 0, /* @ A B C D E F G */
+ 0, 0, 0, 0, 0, 0, 0, 0, /* H I J K L M N O */
+ 0, 0, 0, 0, 0, 0, 0, 0, /* P Q R S T U V W */
+ 0, 0, 0, RU, U, RU, U, 0, /* X Y Z [ \ ] ^ _ */
+ U, 0, 0, 0, 0, 0, 0, 0, /* ` a b c d e f g */
+ 0, 0, 0, 0, 0, 0, 0, 0, /* h i j k l m n o */
+ 0, 0, 0, 0, 0, 0, 0, 0, /* p q r s t u v w */
+ 0, 0, 0, U, U, U, 0, U, /* x y z { | } ~ DEL */
+
+ U, U, U, U, U, U, U, U, U, U, U, U, U, U, U, U,
+ U, U, U, U, U, U, U, U, U, U, U, U, U, U, U, U,
+ U, U, U, U, U, U, U, U, U, U, U, U, U, U, U, U,
+ U, U, U, U, U, U, U, U, U, U, U, U, U, U, U, U,
+
+ U, U, U, U, U, U, U, U, U, U, U, U, U, U, U, U,
+ U, U, U, U, U, U, U, U, U, U, U, U, U, U, U, U,
+ U, U, U, U, U, U, U, U, U, U, U, U, U, U, U, U,
+ U, U, U, U, U, U, U, U, U, U, U, U, U, U, U, U,
+};
+#undef R
+#undef U
+#undef RU
+
+static void
+url_unescape_1 (char *s, unsigned char mask)
+{
+ unsigned char *t = (unsigned char *) s; /* t - tortoise */
+ unsigned char *h = (unsigned char *) s; /* h - hare */
+
+ for (; *h; h++, t++)
+ {
+ if (*h != '%')
+ {
+ copychar:
+ *t = *h;
+ }
+ else
+ {
+ unsigned char c;
+ /* Do nothing if '%' is not followed by two hex digits. */
+ if (!h[1] || !h[2] || !(c_isxdigit (h[1]) && c_isxdigit (h[2])))
+ goto copychar;
+ c = X2DIGITS_TO_NUM (h[1], h[2]);
+ if (urlchr_test(c, mask))
+ goto copychar;
+ /* Don't unescape %00 because there is no way to insert it
+ into a C string without effectively truncating it. */
+ if (c == '\0')
+ goto copychar;
+ *t = c;
+ h += 2;
+ }
+ }
+ *t = '\0';
+}
+
+/* URL-unescape the string S.
+
+ This is done by transforming the sequences "%HH" to the character
+ represented by the hexadecimal digits HH. If % is not followed by
+ two hexadecimal digits, it is inserted literally.
+
+ The transformation is done in place. If you need the original
+ string intact, make a copy before calling this function. */
+void
+url_unescape (char *s)
+{
+ url_unescape_1 (s, 0);
+}
+
+/* URL-unescape the string S.
+
+ This functions behaves identically as url_unescape(), but does not
+ convert characters from "reserved". In other words, it only converts
+ "unsafe" characters. */
+void
+url_unescape_except_reserved (char *s)
+{
+ url_unescape_1 (s, urlchr_reserved);
+}
+
+/* The core of url_escape_* functions. Escapes the characters that
+ match the provided mask in urlchr_table.
+
+ If ALLOW_PASSTHROUGH is true, a string with no unsafe chars will be
+ returned unchanged. If ALLOW_PASSTHROUGH is false, a freshly
+ allocated string will be returned in all cases. */
+
+static char *
+url_escape_1 (const char *s, unsigned char mask, bool allow_passthrough)
+{
+ const char *p1;
+ char *p2, *newstr;
+ int newlen;
+ int addition = 0;
+
+ for (p1 = s; *p1; p1++)
+ if (urlchr_test (*p1, mask))
+ addition += 2; /* Two more characters (hex digits) */
+
+ if (!addition)
+ return allow_passthrough ? (char *)s : xstrdup (s);
+
+ newlen = (p1 - s) + addition;
+ newstr = xmalloc (newlen + 1);
+
+ p1 = s;
+ p2 = newstr;
+ while (*p1)
+ {
+ /* Quote the characters that match the test mask. */
+ if (urlchr_test (*p1, mask))
+ {
+ unsigned char c = *p1++;
+ *p2++ = '%';
+ *p2++ = XNUM_TO_DIGIT (c >> 4);
+ *p2++ = XNUM_TO_DIGIT (c & 0xf);
+ }
+ else
+ *p2++ = *p1++;
+ }
+ assert (p2 - newstr == newlen);
+ *p2 = '\0';
+
+ return newstr;
+}
+
+/* URL-escape the unsafe characters (see urlchr_table) in a given
+ string, returning a freshly allocated string. */
+
+char *
+url_escape (const char *s)
+{
+ return url_escape_1 (s, urlchr_unsafe, false);
+}
+
+/* URL-escape the unsafe and reserved characters (see urlchr_table) in
+ a given string, returning a freshly allocated string. */
+
+char *
+url_escape_unsafe_and_reserved (const char *s)
+{
+ return url_escape_1 (s, urlchr_unsafe|urlchr_reserved, false);
+}
+
+/* URL-escape the unsafe characters (see urlchr_table) in a given
+ string. If no characters are unsafe, S is returned. */
+
+static char *
+url_escape_allow_passthrough (const char *s)
+{
+ return url_escape_1 (s, urlchr_unsafe, true);
+}
+
+/* Decide whether the char at position P needs to be encoded. (It is
+ not enough to pass a single char *P because the function may need
+ to inspect the surrounding context.)
+
+ Return true if the char should be escaped as %XX, false otherwise. */
+
+static inline bool
+char_needs_escaping (const char *p)
+{
+ if (*p == '%')
+ {
+ if (c_isxdigit (*(p + 1)) && c_isxdigit (*(p + 2)))
+ return false;
+ else
+ /* Garbled %.. sequence: encode `%'. */
+ return true;
+ }
+ else if (URL_UNSAFE_CHAR (*p) && !URL_RESERVED_CHAR (*p))
+ return true;
+ else
+ return false;
+}
+
+/* Translate a %-escaped (but possibly non-conformant) input string S
+ into a %-escaped (and conformant) output string. If no characters
+ are encoded or decoded, return the same string S; otherwise, return
+ a freshly allocated string with the new contents.
+
+ After a URL has been run through this function, the protocols that
+ use `%' as the quote character can use the resulting string as-is,
+ while those that don't can use url_unescape to get to the intended
+ data. This function is stable: once the input is transformed,
+ further transformations of the result yield the same output.
+
+ Let's discuss why this function is needed.
+
+ Imagine Wget is asked to retrieve `http://abc.xyz/abc def'. Since
+ a raw space character would mess up the HTTP request, it needs to
+ be quoted, like this:
+
+ GET /abc%20def HTTP/1.0
+
+ It would appear that the unsafe chars need to be quoted, for
+ example with url_escape. But what if we're requested to download
+ `abc%20def'? url_escape transforms "%" to "%25", which would leave
+ us with `abc%2520def'. This is incorrect -- since %-escapes are
+ part of URL syntax, "%20" is the correct way to denote a literal
+ space on the Wget command line. This leads to the conclusion that
+ in that case Wget should not call url_escape, but leave the `%20'
+ as is. This is clearly contradictory, but it only gets worse.
+
+ What if the requested URI is `abc%20 def'? If we call url_escape,
+ we end up with `/abc%2520%20def', which is almost certainly not
+ intended. If we don't call url_escape, we are left with the
+ embedded space and cannot complete the request. What the user
+ meant was for Wget to request `/abc%20%20def', and this is where
+ reencode_escapes kicks in.
+
+ Wget used to solve this by first decoding %-quotes, and then
+ encoding all the "unsafe" characters found in the resulting string.
+ This was wrong because it didn't preserve certain URL special
+ (reserved) characters. For instance, URI containing "a%2B+b" (0x2b
+ == '+') would get translated to "a%2B%2Bb" or "a++b" depending on
+ whether we considered `+' reserved (it is). One of these results
+ is inevitable because by the second step we would lose information
+ on whether the `+' was originally encoded or not. Both results
+ were wrong because in CGI parameters + means space, while %2B means
+ literal plus. reencode_escapes correctly translates the above to
+ "a%2B+b", i.e. returns the original string.
+
+ This function uses a modified version of the algorithm originally
+ proposed by Anon Sricharoenchai:
+
+ * Encode all "unsafe" characters, except those that are also
+ "reserved", to %XX. See urlchr_table for which characters are
+ unsafe and reserved.
+
+ * Encode the "%" characters not followed by two hex digits to
+ "%25".
+
+ * Pass through all other characters and %XX escapes as-is. (Up to
+ Wget 1.10 this decoded %XX escapes corresponding to "safe"
+ characters, but that was obtrusive and broke some servers.)
+
+ Anon's test case:
+
+ "http://abc.xyz/%20%3F%%36%31%25aa% a?a=%61+a%2Ba&b=b%26c%3Dc"
+ ->
+ "http://abc.xyz/%20%3F%25%36%31%25aa%25%20a?a=%61+a%2Ba&b=b%26c%3Dc"
+
+ Simpler test cases:
+
+ "foo bar" -> "foo%20bar"
+ "foo%20bar" -> "foo%20bar"
+ "foo %20bar" -> "foo%20%20bar"
+ "foo%%20bar" -> "foo%25%20bar" (0x25 == '%')
+ "foo%25%20bar" -> "foo%25%20bar"
+ "foo%2%20bar" -> "foo%252%20bar"
+ "foo+bar" -> "foo+bar" (plus is reserved!)
+ "foo%2b+bar" -> "foo%2b+bar" */
+
+static char *
+reencode_escapes (const char *s)
+{
+ const char *p1;
+ char *newstr, *p2;
+ int oldlen, newlen;
+
+ int encode_count = 0;
+
+ /* First pass: inspect the string to see if there's anything to do,
+ and to calculate the new length. */
+ for (p1 = s; *p1; p1++)
+ if (char_needs_escaping (p1))
+ ++encode_count;
+
+ if (!encode_count)
+ /* The string is good as it is. */
+ return (char *) s; /* C const model sucks. */
+
+ oldlen = p1 - s;
+ /* Each encoding adds two characters (hex digits). */
+ newlen = oldlen + 2 * encode_count;
+ newstr = xmalloc (newlen + 1);
+
+ /* Second pass: copy the string to the destination address, encoding
+ chars when needed. */
+ p1 = s;
+ p2 = newstr;
+
+ while (*p1)
+ if (char_needs_escaping (p1))
+ {
+ unsigned char c = *p1++;
+ *p2++ = '%';
+ *p2++ = XNUM_TO_DIGIT (c >> 4);
+ *p2++ = XNUM_TO_DIGIT (c & 0xf);
+ }
+ else
+ *p2++ = *p1++;
+
+ *p2 = '\0';
+ assert (p2 - newstr == newlen);
+ return newstr;
+}
+
+/* Returns the scheme type if the scheme is supported, or
+ SCHEME_INVALID if not. */
+
+enum url_scheme
+url_scheme (const char *url)
+{
+ int i;
+
+ for (i = 0; supported_schemes[i].leading_string; i++)
+ if (0 == c_strncasecmp (url, supported_schemes[i].leading_string,
+ strlen (supported_schemes[i].leading_string)))
+ {
+ if (!(supported_schemes[i].flags & scm_disabled))
+ return (enum url_scheme) i;
+ else
+ return SCHEME_INVALID;
+ }
+
+ return SCHEME_INVALID;
+}
+
+#define SCHEME_CHAR(ch) (c_isalnum (ch) || (ch) == '-' || (ch) == '+')
+
+/* Return 1 if the URL begins with any "scheme", 0 otherwise. As
+ currently implemented, it returns true if URL begins with
+ [-+a-zA-Z0-9]+: . */
+
+bool
+url_has_scheme (const char *url)
+{
+ const char *p = url;
+
+ /* The first char must be a scheme char. */
+ if (!*p || !SCHEME_CHAR (*p))
+ return false;
+ ++p;
+ /* Followed by 0 or more scheme chars. */
+ while (*p && SCHEME_CHAR (*p))
+ ++p;
+ /* Terminated by ':'. */
+ return *p == ':';
+}
+
+bool
+url_valid_scheme (const char *url)
+{
+ enum url_scheme scheme = url_scheme (url);
+ return scheme != SCHEME_INVALID;
+}
+
+int
+scheme_default_port (enum url_scheme scheme)
+{
+ return supported_schemes[scheme].default_port;
+}
+
+void
+scheme_disable (enum url_scheme scheme)
+{
+ supported_schemes[scheme].flags |= scm_disabled;
+}
+
+const char *
+scheme_leading_string (enum url_scheme scheme)
+{
+ return supported_schemes[scheme].leading_string;
+}
+
+/* Skip the username and password, if present in the URL. The
+ function should *not* be called with the complete URL, but with the
+ portion after the scheme.
+
+ If no username and password are found, return URL. */
+
+static const char *
+url_skip_credentials (const char *url)
+{
+ /* Look for '@' that comes before terminators, such as '/', '?',
+ '#', or ';'. */
+ const char *p = (const char *)strpbrk (url, "@/?#;");
+ if (!p || *p != '@')
+ return url;
+ return p + 1;
+}
+
+/* Parse credentials contained in [BEG, END). The region is expected
+ to have come from a URL and is unescaped. */
+
+static bool
+parse_credentials (const char *beg, const char *end, char **user, char **passwd)
+{
+ char *colon;
+ const char *userend;
+
+ if (beg == end)
+ return false; /* empty user name */
+
+ colon = memchr (beg, ':', end - beg);
+ if (colon == beg)
+ return false; /* again empty user name */
+
+ if (colon)
+ {
+ *passwd = strdupdelim (colon + 1, end);
+ userend = colon;
+ url_unescape (*passwd);
+ }
+ else
+ {
+ *passwd = NULL;
+ userend = end;
+ }
+ *user = strdupdelim (beg, userend);
+ url_unescape (*user);
+ return true;
+}
+
+/* Used by main.c: detect URLs written using the "shorthand" URL forms
+ originally popularized by Netscape and NcFTP. HTTP shorthands look
+ like this:
+
+ www.foo.com[:port]/dir/file -> http://www.foo.com[:port]/dir/file
+ www.foo.com[:port] -> http://www.foo.com[:port]
+
+ FTP shorthands look like this:
+
+ foo.bar.com:dir/file -> ftp://foo.bar.com/dir/file
+ foo.bar.com:/absdir/file -> ftp://foo.bar.com//absdir/file
+
+ If the URL needs not or cannot be rewritten, return NULL. */
+
+char *
+rewrite_shorthand_url (const char *url)
+{
+ const char *p;
+ char *ret;
+
+ if (url_scheme (url) != SCHEME_INVALID)
+ return NULL;
+
+ /* Look for a ':' or '/'. The former signifies NcFTP syntax, the
+ latter Netscape. */
+ p = strpbrk (url, ":/");
+ if (p == url)
+ return NULL;
+
+ /* If we're looking at "://", it means the URL uses a scheme we
+ don't support, which may include "https" when compiled without
+ SSL support. Don't bogusly rewrite such URLs. */
+ if (p && p[0] == ':' && p[1] == '/' && p[2] == '/')
+ return NULL;
+
+ if (p && *p == ':')
+ {
+ /* Colon indicates ftp, as in foo.bar.com:path. Check for
+ special case of http port number ("localhost:10000"). */
+ int digits = strspn (p + 1, "0123456789");
+ if (digits && (p[1 + digits] == '/' || p[1 + digits] == '\0'))
+ goto http;
+
+ /* Turn "foo.bar.com:path" to "ftp://foo.bar.com/path". */
+ if ((ret = aprintf ("ftp://%s", url)) != NULL)
+ ret[6 + (p - url)] = '/';
+ }
+ else
+ {
+ http:
+ /* Just prepend "http://" to URL. */
+ ret = aprintf ("http://%s", url);
+ }
+ return ret;
+}
+
+static void split_path (const char *, char **, char **);
+
+/* Like strpbrk, with the exception that it returns the pointer to the
+ terminating zero (end-of-string aka "eos") if no matching character
+ is found. */
+
+static inline char *
+strpbrk_or_eos (const char *s, const char *accept)
+{
+ char *p = strpbrk (s, accept);
+ if (!p)
+ p = strchr (s, '\0');
+ return p;
+}
+
+/* Turn STR into lowercase; return true if a character was actually
+ changed. */
+
+static bool
+lowercase_str (char *str)
+{
+ bool changed = false;
+ for (; *str; str++)
+ if (c_isupper (*str))
+ {
+ changed = true;
+ *str = c_tolower (*str);
+ }
+ return changed;
+}
+
+static const char *
+init_seps (enum url_scheme scheme)
+{
+ static char seps[8] = ":/";
+ char *p = seps + 2;
+ int flags = supported_schemes[scheme].flags;
+
+ if (flags & scm_has_params)
+ *p++ = ';';
+ if (flags & scm_has_query)
+ *p++ = '?';
+ if (flags & scm_has_fragment)
+ *p++ = '#';
+ *p = '\0';
+ return seps;
+}
+
+static const char *parse_errors[] = {
+#define PE_NO_ERROR 0
+ N_("No error"),
+#define PE_UNSUPPORTED_SCHEME 1
+ N_("Unsupported scheme %s"), /* support for format token only here */
+#define PE_MISSING_SCHEME 2
+ N_("Scheme missing"),
+#define PE_INVALID_HOST_NAME 3
+ N_("Invalid host name"),
+#define PE_BAD_PORT_NUMBER 4
+ N_("Bad port number"),
+#define PE_INVALID_USER_NAME 5
+ N_("Invalid user name"),
+#define PE_UNTERMINATED_IPV6_ADDRESS 6
+ N_("Unterminated IPv6 numeric address"),
+#define PE_IPV6_NOT_SUPPORTED 7
+ N_("IPv6 addresses not supported"),
+#define PE_INVALID_IPV6_ADDRESS 8
+ N_("Invalid IPv6 numeric address")
+};
+
+/* Parse a URL.
+
+ Return a new struct url if successful, NULL on error. In case of
+ error, and if ERROR is not NULL, also set *ERROR to the appropriate
+ error code. */
+struct url *
+url_parse (const char *url, int *error, struct iri *iri, bool percent_encode)
+{
+ struct url *u;
+ const char *p;
+ bool path_modified, host_modified;
+
+ enum url_scheme scheme;
+ const char *seps;
+
+ const char *uname_b, *uname_e;
+ const char *host_b, *host_e;
+ const char *path_b, *path_e;
+ const char *params_b, *params_e;
+ const char *query_b, *query_e;
+ const char *fragment_b, *fragment_e;
+
+ int port;
+ char *user = NULL, *passwd = NULL;
+
+ const char *url_encoded = NULL;
+
+ int error_code;
+
+ scheme = url_scheme (url);
+ if (scheme == SCHEME_INVALID)
+ {
+ if (url_has_scheme (url))
+ error_code = PE_UNSUPPORTED_SCHEME;
+ else
+ error_code = PE_MISSING_SCHEME;
+ goto error;
+ }
+
+ url_encoded = url;
+
+ if (iri && iri->utf8_encode)
+ {
+ char *new_url = NULL;
+
+ iri->utf8_encode = remote_to_utf8 (iri, iri->orig_url ? iri->orig_url : url, &new_url);
+ if (!iri->utf8_encode)
+ new_url = NULL;
+ else
+ {
+ xfree (iri->orig_url);
+ iri->orig_url = xstrdup (url);
+ url_encoded = reencode_escapes (new_url);
+ if (url_encoded != new_url)
+ xfree (new_url);
+ percent_encode = false;
+ }
+ }
+
+ if (percent_encode)
+ url_encoded = reencode_escapes (url);
+
+ p = url_encoded;
+ p += strlen (supported_schemes[scheme].leading_string);
+ uname_b = p;
+ p = url_skip_credentials (p);
+ uname_e = p;
+
+ /* scheme://user:pass@host[:port]... */
+ /* ^ */
+
+ /* We attempt to break down the URL into the components path,
+ params, query, and fragment. They are ordered like this:
+
+ scheme://host[:port][/path][;params][?query][#fragment] */
+
+ path_b = path_e = NULL;
+ params_b = params_e = NULL;
+ query_b = query_e = NULL;
+ fragment_b = fragment_e = NULL;
+
+ /* Initialize separators for optional parts of URL, depending on the
+ scheme. For example, FTP has params, and HTTP and HTTPS have
+ query string and fragment. */
+ seps = init_seps (scheme);
+
+ host_b = p;
+
+ if (*p == '[')
+ {
+ /* Handle IPv6 address inside square brackets. Ideally we'd
+ just look for the terminating ']', but rfc2732 mandates
+ rejecting invalid IPv6 addresses. */
+
+ /* The address begins after '['. */
+ host_b = p + 1;
+ host_e = strchr (host_b, ']');
+
+ if (!host_e)
+ {
+ error_code = PE_UNTERMINATED_IPV6_ADDRESS;
+ goto error;
+ }
+
+#ifdef ENABLE_IPV6
+ /* Check if the IPv6 address is valid. */
+ if (!is_valid_ipv6_address(host_b, host_e))
+ {
+ error_code = PE_INVALID_IPV6_ADDRESS;
+ goto error;
+ }
+
+ /* Continue parsing after the closing ']'. */
+ p = host_e + 1;
+#else
+ error_code = PE_IPV6_NOT_SUPPORTED;
+ goto error;
+#endif
+
+ /* The closing bracket must be followed by a separator or by the
+ null char. */
+ /* http://[::1]... */
+ /* ^ */
+ if (!strchr (seps, *p))
+ {
+ /* Trailing garbage after []-delimited IPv6 address. */
+ error_code = PE_INVALID_HOST_NAME;
+ goto error;
+ }
+ }
+ else
+ {
+ p = strpbrk_or_eos (p, seps);
+ host_e = p;
+ }
+ ++seps; /* advance to '/' */
+
+ if (host_b == host_e)
+ {
+ error_code = PE_INVALID_HOST_NAME;
+ goto error;
+ }
+
+ port = scheme_default_port (scheme);
+ if (*p == ':')
+ {
+ const char *port_b, *port_e, *pp;
+
+ /* scheme://host:port/tralala */
+ /* ^ */
+ ++p;
+ port_b = p;
+ p = strpbrk_or_eos (p, seps);
+ port_e = p;
+
+ /* Allow empty port, as per rfc2396. */
+ if (port_b != port_e)
+ for (port = 0, pp = port_b; pp < port_e; pp++)
+ {
+ if (!c_isdigit (*pp))
+ {
+ /* http://host:12randomgarbage/blah */
+ /* ^ */
+ error_code = PE_BAD_PORT_NUMBER;
+ goto error;
+ }
+ port = 10 * port + (*pp - '0');
+ /* Check for too large port numbers here, before we have
+ a chance to overflow on bogus port values. */
+ if (port > 0xffff)
+ {
+ error_code = PE_BAD_PORT_NUMBER;
+ goto error;
+ }
+ }
+ }
+ /* Advance to the first separator *after* '/' (either ';' or '?',
+ depending on the scheme). */
+ ++seps;
+
+ /* Get the optional parts of URL, each part being delimited by
+ current location and the position of the next separator. */
+#define GET_URL_PART(sepchar, var) do { \
+ if (*p == sepchar) \
+ var##_b = ++p, var##_e = p = strpbrk_or_eos (p, seps); \
+ ++seps; \
+} while (0)
+
+ GET_URL_PART ('/', path);
+ if (supported_schemes[scheme].flags & scm_has_params)
+ GET_URL_PART (';', params);
+ if (supported_schemes[scheme].flags & scm_has_query)
+ GET_URL_PART ('?', query);
+ if (supported_schemes[scheme].flags & scm_has_fragment)
+ GET_URL_PART ('#', fragment);
+
+#undef GET_URL_PART
+ assert (*p == 0);
+
+ if (uname_b != uname_e)
+ {
+ /* http://user:pass@host */
+ /* ^ ^ */
+ /* uname_b uname_e */
+ if (!parse_credentials (uname_b, uname_e - 1, &user, &passwd))
+ {
+ error_code = PE_INVALID_USER_NAME;
+ goto error;
+ }
+ }
+
+ u = xnew0 (struct url);
+ u->scheme = scheme;
+ u->host = strdupdelim (host_b, host_e);
+ u->port = port;
+ u->user = user;
+ u->passwd = passwd;
+
+ u->path = strdupdelim (path_b, path_e);
+ path_modified = path_simplify (scheme, u->path);
+ split_path (u->path, &u->dir, &u->file);
+
+ host_modified = lowercase_str (u->host);
+
+ /* Decode %HH sequences in host name. This is important not so much
+ to support %HH sequences in host names (which other browser
+ don't), but to support binary characters (which will have been
+ converted to %HH by reencode_escapes). */
+ if (strchr (u->host, '%'))
+ {
+ url_unescape (u->host);
+ host_modified = true;
+
+ /* check for invalid control characters in host name */
+ for (p = u->host; *p; p++)
+ {
+ if (c_iscntrl(*p))
+ {
+ url_free(u);
+ error_code = PE_INVALID_HOST_NAME;
+ goto error;
+ }
+ }
+
+ /* Apply IDNA regardless of iri->utf8_encode status */
+ if (opt.enable_iri && iri)
+ {
+ char *new = idn_encode (iri, u->host);
+ if (new)
+ {
+ xfree (u->host);
+ u->host = new;
+ host_modified = true;
+ }
+ }
+ }
+
+ if (params_b)
+ u->params = strdupdelim (params_b, params_e);
+ if (query_b)
+ u->query = strdupdelim (query_b, query_e);
+ if (fragment_b)
+ u->fragment = strdupdelim (fragment_b, fragment_e);
+
+ if (opt.enable_iri || path_modified || u->fragment || host_modified || path_b == path_e)
+ {
+ /* If we suspect that a transformation has rendered what
+ url_string might return different from URL_ENCODED, rebuild
+ u->url using url_string. */
+ u->url = url_string (u, URL_AUTH_SHOW);
+
+ if (url_encoded != url)
+ xfree (url_encoded);
+ }
+ else
+ {
+ if (url_encoded == url)
+ u->url = xstrdup (url);
+ else
+ u->url = (char *) url_encoded;
+ }
+
+ return u;
+
+ error:
+ /* Cleanup in case of error: */
+ if (url_encoded && url_encoded != url)
+ xfree (url_encoded);
+
+ /* Transmit the error code to the caller, if the caller wants to
+ know. */
+ if (error)
+ *error = error_code;
+ return NULL;
+}
+
+/* Return the error message string from ERROR_CODE, which should have
+ been retrieved from url_parse. The error message is translated. */
+
+char *
+url_error (const char *url, int error_code)
+{
+ assert (error_code >= 0 && ((size_t) error_code) < countof (parse_errors));
+
+ if (error_code == PE_UNSUPPORTED_SCHEME)
+ {
+ char *error, *p;
+ char *scheme = xstrdup (url);
+ assert (url_has_scheme (url));
+
+ if ((p = strchr (scheme, ':')))
+ *p = '\0';
+ if (!c_strcasecmp (scheme, "https"))
+ error = aprintf (_("HTTPS support not compiled in"));
+ else
+ error = aprintf (_(parse_errors[error_code]), quote (scheme));
+ xfree (scheme);
+
+ return error;
+ }
+ else
+ return xstrdup (_(parse_errors[error_code]));
+}
+
+/* Split PATH into DIR and FILE. PATH comes from the URL and is
+ expected to be URL-escaped.
+
+ The path is split into directory (the part up to the last slash)
+ and file (the part after the last slash), which are subsequently
+ unescaped. Examples:
+
+ PATH DIR FILE
+ "foo/bar/baz" "foo/bar" "baz"
+ "foo/bar/" "foo/bar" ""
+ "foo" "" "foo"
+ "foo/bar/baz%2fqux" "foo/bar" "baz/qux" (!)
+
+ DIR and FILE are freshly allocated. */
+
+static void
+split_path (const char *path, char **dir, char **file)
+{
+ char *last_slash = strrchr (path, '/');
+ if (!last_slash)
+ {
+ *dir = xstrdup ("");
+ *file = xstrdup (path);
+ }
+ else
+ {
+ *dir = strdupdelim (path, last_slash);
+ *file = xstrdup (last_slash + 1);
+ }
+ url_unescape (*dir);
+ url_unescape (*file);
+}
+
+/* Note: URL's "full path" is the path with the query string and
+ params appended. The "fragment" (#foo) is intentionally ignored,
+ but that might be changed. For example, if the original URL was
+ "http://host:port/foo/bar/baz;bullshit?querystring#uselessfragment",
+ the full path will be "/foo/bar/baz;bullshit?querystring". */
+
+/* Return the length of the full path, without the terminating
+ zero. */
+
+static int
+full_path_length (const struct url *url)
+{
+ int len = 0;
+
+#define FROB(el) if (url->el) len += 1 + strlen (url->el)
+
+ FROB (path);
+ FROB (params);
+ FROB (query);
+
+#undef FROB
+
+ return len;
+}
+
+/* Write out the full path. */
+
+static void
+full_path_write (const struct url *url, char *where)
+{
+#define FROB(el, chr) do { \
+ char *f_el = url->el; \
+ if (f_el) { \
+ int l = strlen (f_el); \
+ *where++ = chr; \
+ memcpy (where, f_el, l); \
+ where += l; \
+ } \
+} while (0)
+
+ FROB (path, '/');
+ FROB (params, ';');
+ FROB (query, '?');
+
+#undef FROB
+}
+
+/* Public function for getting the "full path". E.g. if u->path is
+ "foo/bar" and u->query is "param=value", full_path will be
+ "/foo/bar?param=value". */
+
+char *
+url_full_path (const struct url *url)
+{
+ int length = full_path_length (url);
+ char *full_path = xmalloc (length + 1);
+
+ full_path_write (url, full_path);
+ full_path[length] = '\0';
+
+ return full_path;
+}
+
+/* Unescape CHR in an otherwise escaped STR. Used to selectively
+ escaping of certain characters, such as "/" and ":". Returns a
+ count of unescaped chars. */
+
+static void
+unescape_single_char (char *str, char chr)
+{
+ const char c1 = XNUM_TO_DIGIT (chr >> 4);
+ const char c2 = XNUM_TO_DIGIT (chr & 0xf);
+ char *h = str; /* hare */
+ char *t = str; /* tortoise */
+ for (; *h; h++, t++)
+ {
+ if (h[0] == '%' && h[1] == c1 && h[2] == c2)
+ {
+ *t = chr;
+ h += 2;
+ }
+ else
+ *t = *h;
+ }
+ *t = '\0';
+}
+
+/* Escape unsafe and reserved characters, except for the slash
+ characters. */
+
+static char *
+url_escape_dir (const char *dir)
+{
+ char *newdir = url_escape_1 (dir, urlchr_unsafe | urlchr_reserved, 1);
+ if (newdir == dir)
+ return (char *)dir;
+
+ unescape_single_char (newdir, '/');
+ return newdir;
+}
+
+/* Sync u->path and u->url with u->dir and u->file. Called after
+ u->file or u->dir have been changed, typically by the FTP code. */
+
+static void
+sync_path (struct url *u)
+{
+ char *newpath, *efile, *edir;
+
+ xfree (u->path);
+
+ /* u->dir and u->file are not escaped. URL-escape them before
+ reassembling them into u->path. That way, if they contain
+ separators like '?' or even if u->file contains slashes, the
+ path will be correctly assembled. (u->file can contain slashes
+ if the URL specifies it with %2f, or if an FTP server returns
+ it.) */
+ edir = url_escape_dir (u->dir);
+ efile = url_escape_1 (u->file, urlchr_unsafe | urlchr_reserved, 1);
+
+ if (!*edir)
+ newpath = xstrdup (efile);
+ else
+ {
+ int dirlen = strlen (edir);
+ int filelen = strlen (efile);
+
+ /* Copy "DIR/FILE" to newpath. */
+ char *p = newpath = xmalloc (dirlen + 1 + filelen + 1);
+ memcpy (p, edir, dirlen);
+ p += dirlen;
+ *p++ = '/';
+ memcpy (p, efile, filelen);
+ p += filelen;
+ *p = '\0';
+ }
+
+ u->path = newpath;
+
+ if (edir != u->dir)
+ xfree (edir);
+ if (efile != u->file)
+ xfree (efile);
+
+ /* Regenerate u->url as well. */
+ xfree (u->url);
+ u->url = url_string (u, URL_AUTH_SHOW);
+}
+
+/* Mutators. Code in ftp.c insists on changing u->dir and u->file.
+ This way we can sync u->path and u->url when they get changed. */
+
+void
+url_set_dir (struct url *url, const char *newdir)
+{
+ xfree (url->dir);
+ url->dir = xstrdup (newdir);
+ sync_path (url);
+}
+
+void
+url_set_file (struct url *url, const char *newfile)
+{
+ xfree (url->file);
+ url->file = xstrdup (newfile);
+ sync_path (url);
+}
+
+void
+url_free (struct url *url)
+{
+ if (url)
+ {
+ xfree (url->host);
+
+ xfree (url->path);
+ xfree (url->url);
+
+ xfree (url->params);
+ xfree (url->query);
+ xfree (url->fragment);
+ xfree (url->user);
+ xfree (url->passwd);
+
+ xfree (url->dir);
+ xfree (url->file);
+
+ xfree (url);
+ }
+}
+
+/* Create all the necessary directories for PATH (a file). Calls
+ make_directory internally. */
+int
+mkalldirs (const char *path)
+{
+ const char *p;
+ char *t;
+ struct stat st;
+ int res;
+
+ p = strrchr(path, '/');
+ p = p == NULL ? path : p;
+
+ /* Don't create if it's just a file. */
+ if ((p == path) && (*p != '/'))
+ return 0;
+ t = strdupdelim (path, p);
+
+ /* Check whether the directory exists. */
+ if ((stat (t, &st) == 0))
+ {
+ if (S_ISDIR (st.st_mode))
+ {
+ xfree (t);
+ return 0;
+ }
+ else
+ {
+ /* If the dir exists as a file name, remove it first. This
+ is *only* for Wget to work with buggy old CERN http
+ servers. Here is the scenario: When Wget tries to
+ retrieve a directory without a slash, e.g.
+ http://foo/bar (bar being a directory), CERN server will
+ not redirect it too http://foo/bar/ -- it will generate a
+ directory listing containing links to bar/file1,
+ bar/file2, etc. Wget will lose because it saves this
+ HTML listing to a file `bar', so it cannot create the
+ directory. To work around this, if the file of the same
+ name exists, we just remove it and create the directory
+ anyway. */
+ DEBUGP (("Removing %s because of directory danger!\n", t));
+ if (unlink (t))
+ logprintf (LOG_NOTQUIET, "Failed to unlink %s (%d): %s\n",
+ t, errno, strerror(errno));
+ }
+ }
+ res = make_directory (t);
+ if (res != 0)
+ logprintf (LOG_NOTQUIET, "%s: %s\n", t, strerror (errno));
+ xfree (t);
+ return res;
+}
+
+/* Functions for constructing the file name out of URL components. */
+
+/* A growable string structure, used by url_file_name and friends.
+ This should perhaps be moved to utils.c.
+
+ The idea is to have a convenient and efficient way to construct a
+ string by having various functions append data to it. Instead of
+ passing the obligatory BASEVAR, SIZEVAR and TAILPOS to all the
+ functions in questions, we pass the pointer to this struct.
+
+ Functions that write to the members in this struct must make sure
+ that base remains null terminated by calling append_null().
+ */
+
+struct growable {
+ char *base;
+ int size; /* memory allocated */
+ int tail; /* string length */
+};
+
+/* Ensure that the string can accept APPEND_COUNT more characters past
+ the current TAIL position. If necessary, this will grow the string
+ and update its allocated size. If the string is already large
+ enough to take TAIL+APPEND_COUNT characters, this does nothing. */
+#define GROW(g, append_size) do { \
+ struct growable *G_ = g; \
+ DO_REALLOC (G_->base, G_->size, G_->tail + append_size, char); \
+} while (0)
+
+/* Return the tail position of the string. */
+#define TAIL(r) ((r)->base + (r)->tail)
+
+/* Move the tail position by APPEND_COUNT characters. */
+#define TAIL_INCR(r, append_count) ((r)->tail += append_count)
+
+
+/* Append NULL to DEST. */
+static void
+append_null (struct growable *dest)
+{
+ GROW (dest, 1);
+ *TAIL (dest) = 0;
+}
+
+/* Append CH to DEST. */
+static void
+append_char (char ch, struct growable *dest)
+{
+ if (ch)
+ {
+ GROW (dest, 1);
+ *TAIL (dest) = ch;
+ TAIL_INCR (dest, 1);
+ }
+
+ append_null (dest);
+}
+
+/* Append the string STR to DEST. */
+static void
+append_string (const char *str, struct growable *dest)
+{
+ int l = strlen (str);
+
+ if (l)
+ {
+ GROW (dest, l);
+ memcpy (TAIL (dest), str, l);
+ TAIL_INCR (dest, l);
+ }
+
+ append_null (dest);
+}
+
+
+enum {
+ filechr_not_unix = 1, /* unusable on Unix, / and \0 */
+ filechr_not_vms = 2, /* unusable on VMS (ODS5), 0x00-0x1F * ? */
+ filechr_not_windows = 4, /* unusable on Windows, one of \|/<>?:*" */
+ filechr_control = 8 /* a control character, e.g. 0-31 */
+};
+
+#define FILE_CHAR_TEST(c, mask) \
+ ((opt.restrict_files_nonascii && !c_isascii ((unsigned char)(c))) || \
+ (filechr_table[(unsigned char)(c)] & (mask)))
+
+/* Shorthands for the table: */
+#define U filechr_not_unix
+#define V filechr_not_vms
+#define W filechr_not_windows
+#define C filechr_control
+
+#define UVWC U|V|W|C
+#define UW U|W
+#define VC V|C
+#define VW V|W
+
+/* Table of characters unsafe under various conditions (see above).
+
+ Arguably we could also claim `%' to be unsafe, since we use it as
+ the escape character. If we ever want to be able to reliably
+ translate file name back to URL, this would become important
+ crucial. Right now, it's better to be minimal in escaping. */
+
+static const unsigned char filechr_table[256] =
+{
+UVWC, VC, VC, VC, VC, VC, VC, VC, /* NUL SOH STX ETX EOT ENQ ACK BEL */
+ VC, VC, VC, VC, VC, VC, VC, VC, /* BS HT LF VT FF CR SO SI */
+ VC, VC, VC, VC, VC, VC, VC, VC, /* DLE DC1 DC2 DC3 DC4 NAK SYN ETB */
+ VC, VC, VC, VC, VC, VC, VC, VC, /* CAN EM SUB ESC FS GS RS US */
+ 0, 0, W, 0, 0, 0, 0, 0, /* SP ! " # $ % & ' */
+ 0, 0, VW, 0, 0, 0, 0, UW, /* ( ) * + , - . / */
+ 0, 0, 0, 0, 0, 0, 0, 0, /* 0 1 2 3 4 5 6 7 */
+ 0, 0, W, 0, W, 0, W, VW, /* 8 9 : ; < = > ? */
+ 0, 0, 0, 0, 0, 0, 0, 0, /* @ A B C D E F G */
+ 0, 0, 0, 0, 0, 0, 0, 0, /* H I J K L M N O */
+ 0, 0, 0, 0, 0, 0, 0, 0, /* P Q R S T U V W */
+ 0, 0, 0, 0, W, 0, 0, 0, /* X Y Z [ \ ] ^ _ */
+ 0, 0, 0, 0, 0, 0, 0, 0, /* ` a b c d e f g */
+ 0, 0, 0, 0, 0, 0, 0, 0, /* h i j k l m n o */
+ 0, 0, 0, 0, 0, 0, 0, 0, /* p q r s t u v w */
+ 0, 0, 0, 0, W, 0, 0, C, /* x y z { | } ~ DEL */
+
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 128-143 */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 144-159 */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+};
+#undef U
+#undef V
+#undef W
+#undef C
+#undef UW
+#undef UVWC
+#undef VC
+#undef VW
+
+/* FN_PORT_SEP is the separator between host and port in file names
+ for non-standard port numbers. On Unix this is normally ':', as in
+ "www.xemacs.org:4001/index.html". Under Windows, we set it to +
+ because Windows can't handle ':' in file names. */
+#define FN_PORT_SEP (opt.restrict_files_os != restrict_windows ? ':' : '+')
+
+/* FN_QUERY_SEP is the separator between the file name and the URL
+ query, normally '?'. Because VMS and Windows cannot handle '?' in a
+ file name, we use '@' instead there. */
+#define FN_QUERY_SEP \
+ (((opt.restrict_files_os != restrict_vms) && \
+ (opt.restrict_files_os != restrict_windows)) ? '?' : '@')
+#define FN_QUERY_SEP_STR \
+ (((opt.restrict_files_os != restrict_vms) && \
+ (opt.restrict_files_os != restrict_windows)) ? "?" : "@")
+
+/* Quote path element, characters in [b, e), as file name, and append
+ the quoted string to DEST. Each character is quoted as per
+ file_unsafe_char and the corresponding table.
+
+ If ESCAPED is true, the path element is considered to be
+ URL-escaped and will be unescaped prior to inspection. */
+
+static void
+append_uri_pathel (const char *b, const char *e, bool escaped,
+ struct growable *dest)
+{
+ const char *p;
+ char buf[1024];
+ char *unescaped = NULL;
+ int quoted, outlen;
+ int mask;
+
+ if (!dest)
+ return;
+
+ if (opt.restrict_files_os == restrict_unix)
+ mask = filechr_not_unix;
+ else if (opt.restrict_files_os == restrict_vms)
+ mask = filechr_not_vms;
+ else
+ mask = filechr_not_windows;
+
+ if (opt.restrict_files_ctrl)
+ mask |= filechr_control;
+
+ /* Copy [b, e) to PATHEL and URL-unescape it. */
+ if (escaped)
+ {
+ size_t len = e - b;
+ if (len < sizeof (buf))
+ unescaped = buf;
+ else
+ unescaped = xmalloc(len + 1);
+
+ memcpy(unescaped, b, len);
+ unescaped[len] = 0;
+
+ url_unescape (unescaped);
+ b = unescaped;
+ e = unescaped + strlen (unescaped);
+ }
+
+ /* Defang ".." when found as component of path. Remember that path
+ comes from the URL and might contain malicious input. */
+ if (e - b == 2 && b[0] == '.' && b[1] == '.')
+ {
+ b = "%2E%2E";
+ e = b + 6;
+ }
+
+ /* Walk the PATHEL string and check how many characters we'll need
+ to quote. */
+ quoted = 0;
+ for (p = b; p < e; p++)
+ if (FILE_CHAR_TEST (*p, mask))
+ ++quoted;
+
+ /* Calculate the length of the output string. e-b is the input
+ string length. Each quoted char introduces two additional
+ characters in the string, hence 2*quoted. */
+ outlen = (e - b) + (2 * quoted);
+ GROW (dest, outlen);
+
+ if (!quoted)
+ {
+ /* If there's nothing to quote, we can simply append the string
+ without processing it again. */
+ memcpy (TAIL (dest), b, outlen);
+ }
+ else
+ {
+ char *q = TAIL (dest);
+ for (p = b; p < e; p++)
+ {
+ if (!FILE_CHAR_TEST (*p, mask))
+ *q++ = *p;
+ else
+ {
+ unsigned char ch = *p;
+ *q++ = '%';
+ *q++ = XNUM_TO_DIGIT (ch >> 4);
+ *q++ = XNUM_TO_DIGIT (ch & 0xf);
+ }
+ }
+ assert (q - TAIL (dest) == outlen);
+ }
+
+ /* Perform inline case transformation if required. */
+ if (opt.restrict_files_case == restrict_lowercase
+ || opt.restrict_files_case == restrict_uppercase)
+ {
+ char *q;
+ for (q = TAIL (dest); q < TAIL (dest) + outlen; ++q)
+ {
+ if (opt.restrict_files_case == restrict_lowercase)
+ *q = c_tolower (*q);
+ else
+ *q = c_toupper (*q);
+ }
+ }
+
+ TAIL_INCR (dest, outlen);
+ append_null (dest);
+
+ if (unescaped && unescaped != buf)
+ free (unescaped);
+}
+
+#ifdef HAVE_ICONV
+static char *
+convert_fname (char *fname)
+{
+ char *converted_fname;
+ const char *from_encoding = opt.encoding_remote;
+ const char *to_encoding = opt.locale;
+ iconv_t cd;
+ size_t len, done, inlen, outlen;
+ char *s;
+ const char *orig_fname;
+
+ /* Defaults for remote and local encodings. */
+ if (!from_encoding)
+ from_encoding = "UTF-8";
+ if (!to_encoding)
+ to_encoding = nl_langinfo (CODESET);
+
+ cd = iconv_open (to_encoding, from_encoding);
+ if (cd == (iconv_t) (-1))
+ {
+ logprintf (LOG_VERBOSE, _ ("Conversion from %s to %s isn't supported\n"),
+ quote (from_encoding), quote (to_encoding));
+ return fname;
+ }
+
+ orig_fname = fname;
+ inlen = strlen (fname);
+ len = outlen = inlen * 2;
+ converted_fname = s = xmalloc (outlen + 1);
+ done = 0;
+
+ for (;;)
+ {
+ errno = 0;
+ if (iconv (cd, (ICONV_CONST char **) &fname, &inlen, &s, &outlen) == 0
+ && iconv (cd, NULL, NULL, &s, &outlen) == 0)
+ {
+ *(converted_fname + len - outlen - done) = '\0';
+ iconv_close (cd);
+ DEBUGP (("Converted file name '%s' (%s) -> '%s' (%s)\n",
+ orig_fname, from_encoding, converted_fname, to_encoding));
+ xfree (orig_fname);
+ return converted_fname;
+ }
+
+ /* Incomplete or invalid multibyte sequence */
+ if (errno == EINVAL || errno == EILSEQ || errno == 0)
+ {
+ if (errno)
+ logprintf (LOG_VERBOSE,
+ _ ("Incomplete or invalid multibyte sequence encountered\n"));
+ else
+ logprintf (LOG_VERBOSE,
+ _ ("Unconvertable multibyte sequence encountered\n"));
+ xfree (converted_fname);
+ converted_fname = (char *) orig_fname;
+ break;
+ }
+ else if (errno == E2BIG) /* Output buffer full */
+ {
+ done = len;
+ len = outlen = done + inlen * 2;
+ converted_fname = xrealloc (converted_fname, outlen + 1);
+ s = converted_fname + done;
+ }
+ else /* Weird, we got an unspecified error */
+ {
+ logprintf (LOG_VERBOSE, _ ("Unhandled errno %d\n"), errno);
+ xfree (converted_fname);
+ converted_fname = (char *) orig_fname;
+ break;
+ }
+ }
+ DEBUGP (("Failed to convert file name '%s' (%s) -> '?' (%s)\n",
+ orig_fname, from_encoding, to_encoding));
+
+ iconv_close (cd);
+
+ return converted_fname;
+}
+#else
+static char *
+convert_fname (char *fname)
+{
+ return fname;
+}
+#endif
+
+/* Append to DEST the directory structure that corresponds the
+ directory part of URL's path. For example, if the URL is
+ http://server/dir1/dir2/file, this appends "/dir1/dir2".
+
+ Each path element ("dir1" and "dir2" in the above example) is
+ examined, url-unescaped, and re-escaped as file name element.
+
+ Additionally, it cuts as many directories from the path as
+ specified by opt.cut_dirs. For example, if opt.cut_dirs is 1, it
+ will produce "bar" for the above example. For 2 or more, it will
+ produce "".
+
+ Each component of the path is quoted for use as file name. */
+
+static void
+append_dir_structure (const struct url *u, struct growable *dest)
+{
+ char *pathel, *next;
+ int cut = opt.cut_dirs;
+
+ /* Go through the path components, de-URL-quote them, and quote them
+ (if necessary) as file names. */
+
+ pathel = u->path;
+ for (; (next = strchr (pathel, '/')) != NULL; pathel = next + 1)
+ {
+ if (cut-- > 0)
+ continue;
+ if (pathel == next)
+ /* Ignore empty pathels. */
+ continue;
+
+ if (dest->tail)
+ append_char ('/', dest);
+ append_uri_pathel (pathel, next, true, dest);
+ }
+}
+
+/* Return a unique file name that matches the given URL as well as
+ possible. Does not create directories on the file system. */
+
+char *
+url_file_name (const struct url *u, char *replaced_filename)
+{
+ struct growable fnres; /* stands for "file name result" */
+ struct growable temp_fnres;
+
+ const char *u_file;
+ char *fname, *unique, *fname_len_check;
+ const char *index_filename = "index.html"; /* The default index file is index.html */
+ size_t max_length;
+
+ fnres.base = NULL;
+ fnres.size = 0;
+ fnres.tail = 0;
+
+ temp_fnres.base = NULL;
+ temp_fnres.size = 0;
+ temp_fnres.tail = 0;
+
+ /* If an alternative index file was defined, change index_filename */
+ if (opt.default_page)
+ index_filename = opt.default_page;
+
+
+ /* Start with the directory prefix, if specified. */
+ if (opt.dir_prefix)
+ append_string (opt.dir_prefix, &fnres);
+
+ /* If "dirstruct" is turned on (typically the case with -r), add
+ the host and port (unless those have been turned off) and
+ directory structure. */
+ /* All safe remote chars are unescaped and stored in temp_fnres,
+ then converted to local and appended to fnres.
+ Internationalized URL/IDN will produce punycode to lookup IP from DNS:
+ https://en.wikipedia.org/wiki/URL
+ https://en.wikipedia.org/wiki/Internationalized_domain_name
+ Non-ASCII code chars in the path:
+ https://en.wikipedia.org/wiki/List_of_Unicode_characters
+ https://en.wikipedia.org/wiki/List_of_writing_systems */
+ if (opt.dirstruct)
+ {
+ if (opt.protocol_directories)
+ {
+ if (temp_fnres.tail)
+ append_char ('/', &temp_fnres);
+ append_string (supported_schemes[u->scheme].name, &temp_fnres);
+ }
+ if (opt.add_hostdir)
+ {
+ if (temp_fnres.tail)
+ append_char ('/', &temp_fnres);
+ if (0 != strcmp (u->host, ".."))
+ append_string (u->host, &temp_fnres);
+ else
+ /* Host name can come from the network; malicious DNS may
+ allow ".." to be resolved, causing us to write to
+ "../<file>". Defang such host names. */
+ append_string ("%2E%2E", &temp_fnres);
+ if (u->port != scheme_default_port (u->scheme))
+ {
+ char portstr[24];
+ number_to_string (portstr, u->port);
+ append_char (FN_PORT_SEP, &temp_fnres);
+ append_string (portstr, &temp_fnres);
+ }
+ }
+
+ append_dir_structure (u, &temp_fnres);
+ }
+
+ if (!replaced_filename)
+ {
+ /* Create the filename. */
+ u_file = *u->file ? u->file : index_filename;
+
+ /* Append "?query" to the file name, even if empty,
+ * and create fname_len_check. */
+ if (u->query)
+ fname_len_check = concat_strings (u_file, FN_QUERY_SEP_STR, u->query, NULL);
+ else
+ fname_len_check = strdupdelim (u_file, u_file + strlen (u_file));
+ }
+ else
+ {
+ u_file = replaced_filename;
+ fname_len_check = strdupdelim (u_file, u_file + strlen (u_file));
+ }
+
+ if (temp_fnres.tail)
+ append_char ('/', &temp_fnres);
+
+ append_uri_pathel (fname_len_check,
+ fname_len_check + strlen (fname_len_check), true, &temp_fnres);
+
+ /* Zero-terminate the temporary file name. */
+ append_char ('\0', &temp_fnres);
+
+ /* convert all remote chars before length check and appending to local path */
+ fname = convert_fname (temp_fnres.base);
+ temp_fnres.base = NULL;
+ temp_fnres.size = 0;
+ temp_fnres.tail = 0;
+ append_string (fname, &temp_fnres);
+ xfree (fname);
+
+ /* Check that the length of the file name is acceptable. */
+#ifdef WINDOWS
+ if (MAX_PATH > (fnres.tail + CHOMP_BUFFER + 2))
+ {
+ max_length = MAX_PATH - (fnres.tail + CHOMP_BUFFER + 2);
+ /* FIXME: In Windows a filename is usually limited to 255 characters.
+ To really be accurate you could call GetVolumeInformation() to get
+ lpMaximumComponentLength
+ */
+ if (max_length > 255)
+ {
+ max_length = 255;
+ }
+ }
+ else
+ {
+ max_length = 0;
+ }
+#else
+ max_length = get_max_length (fnres.base, fnres.tail, _PC_NAME_MAX) - CHOMP_BUFFER;
+#endif
+ if (max_length > 0 && strlen (temp_fnres.base) > max_length)
+ {
+ logprintf (LOG_NOTQUIET, "The name is too long, %lu chars total.\n",
+ (unsigned long) strlen (temp_fnres.base));
+ logprintf (LOG_NOTQUIET, "Trying to shorten...\n");
+
+ /* Shorten the file name. */
+ temp_fnres.base[max_length] = '\0';
+
+ logprintf (LOG_NOTQUIET, "New name is %s.\n", temp_fnres.base);
+ }
+
+ xfree (fname_len_check);
+
+ /* The filename has already been 'cleaned' by append_uri_pathel() above. So,
+ * just append it. */
+ if (fnres.tail)
+ append_char ('/', &fnres);
+ append_string (temp_fnres.base, &fnres);
+
+ fname = fnres.base;
+
+ /* Make a final check that the path length is acceptable? */
+ /* TODO: check fnres.base for path length problem */
+
+ xfree (temp_fnres.base);
+
+ /* Check the cases in which the unique extensions are not used:
+ 1) Clobbering is turned off (-nc).
+ 2) Retrieval with regetting.
+ 3) Timestamping is used.
+ 4) Hierarchy is built.
+ 5) Backups are specified.
+
+ The exception is the case when file does exist and is a
+ directory (see `mkalldirs' for explanation). */
+
+ if (ALLOW_CLOBBER
+ && !(file_exists_p (fname, NULL) && !file_non_directory_p (fname)))
+ {
+ unique = fname;
+ }
+ else
+ {
+ unique = unique_name_passthrough (fname);
+ if (unique != fname)
+ xfree (fname);
+ }
+
+/* On VMS, alter the name as required. */
+#ifdef __VMS
+ {
+ char *unique2;
+
+ unique2 = ods_conform( unique);
+ if (unique2 != unique)
+ {
+ xfree (unique);
+ unique = unique2;
+ }
+ }
+#endif /* def __VMS */
+
+ return unique;
+}
+
+/* Resolve "." and ".." elements of PATH by destructively modifying
+ PATH and return true if PATH has been modified, false otherwise.
+
+ The algorithm is in spirit similar to the one described in rfc1808,
+ although implemented differently, in one pass. To recap, path
+ elements containing only "." are removed, and ".." is taken to mean
+ "back up one element". Single leading and trailing slashes are
+ preserved.
+
+ For example, "a/b/c/./../d/.." will yield "a/b/". More exhaustive
+ test examples are provided below. If you change anything in this
+ function, run test_path_simplify to make sure you haven't broken a
+ test case. */
+
+static bool
+path_simplify (enum url_scheme scheme, char *path)
+{
+ char *h = path; /* hare */
+ char *t = path; /* tortoise */
+ char *beg = path;
+ char *end = strchr (path, '\0');
+
+ while (h < end)
+ {
+ /* Hare should be at the beginning of a path element. */
+
+ if (h[0] == '.' && (h[1] == '/' || h[1] == '\0'))
+ {
+ /* Ignore "./". */
+ h += 2;
+ }
+ else if (h[0] == '.' && h[1] == '.' && (h[2] == '/' || h[2] == '\0'))
+ {
+ /* Handle "../" by retreating the tortoise by one path
+ element -- but not past beginning. */
+ if (t > beg)
+ {
+ /* Move backwards until T hits the beginning of the
+ previous path element or the beginning of path. */
+ for (--t; t > beg && t[-1] != '/'; t--)
+ ;
+ }
+ else if (scheme == SCHEME_FTP
+#ifdef HAVE_SSL
+ || scheme == SCHEME_FTPS
+#endif
+ )
+ {
+ /* If we're at the beginning, copy the "../" literally
+ and move the beginning so a later ".." doesn't remove
+ it. This violates RFC 3986; but we do it for FTP
+ anyway because there is otherwise no way to get at a
+ parent directory, when the FTP server drops us in a
+ non-root directory (which is not uncommon). */
+ beg = t + 3;
+ goto regular;
+ }
+ h += 3;
+ }
+ else
+ {
+ regular:
+ /* A regular path element. If H hasn't advanced past T,
+ simply skip to the next path element. Otherwise, copy
+ the path element until the next slash. */
+ if (t == h)
+ {
+ /* Skip the path element, including the slash. */
+ while (h < end && *h != '/')
+ t++, h++;
+ if (h < end)
+ t++, h++;
+ }
+ else
+ {
+ /* Copy the path element, including the final slash. */
+ while (h < end && *h != '/')
+ *t++ = *h++;
+ if (h < end)
+ *t++ = *h++;
+ }
+ }
+ }
+
+ if (t != h)
+ *t = '\0';
+
+ return t != h;
+}
+
+/* Return the length of URL's path. Path is considered to be
+ terminated by one or more of the ?query or ;params or #fragment,
+ depending on the scheme. */
+
+static const char *
+path_end (const char *url)
+{
+ enum url_scheme scheme = url_scheme (url);
+ const char *seps;
+ if (scheme == SCHEME_INVALID)
+ scheme = SCHEME_HTTP; /* use http semantics for rel links */
+ /* +2 to ignore the first two separators ':' and '/' */
+ seps = init_seps (scheme) + 2;
+ return strpbrk_or_eos (url, seps);
+}
+
+/* Find the last occurrence of character C in the range [b, e), or
+ NULL, if none are present. */
+#define find_last_char(b, e, c) memrchr ((b), (c), (e) - (b))
+
+/* Merge BASE with LINK and return the resulting URI.
+
+ Either of the URIs may be absolute or relative, complete with the
+ host name, or path only. This tries to reasonably handle all
+ foreseeable cases. It only employs minimal URL parsing, without
+ knowledge of the specifics of schemes.
+
+ I briefly considered making this function call path_simplify after
+ the merging process, as rfc1738 seems to suggest. This is a bad
+ idea for several reasons: 1) it complexifies the code, and 2)
+ url_parse has to simplify path anyway, so it's wasteful to boot. */
+
+char *
+uri_merge (const char *base, const char *link)
+{
+ int linklength;
+ const char *end;
+ char *merge;
+
+ if (url_has_scheme (link))
+ return xstrdup (link);
+
+ /* We may not examine BASE past END. */
+ end = path_end (base);
+ linklength = strlen (link);
+
+ if (!*link)
+ {
+ /* Empty LINK points back to BASE, query string and all. */
+ return xstrdup (base);
+ }
+ else if (*link == '?')
+ {
+ /* LINK points to the same location, but changes the query
+ string. Examples: */
+ /* uri_merge("path", "?new") -> "path?new" */
+ /* uri_merge("path?foo", "?new") -> "path?new" */
+ /* uri_merge("path?foo#bar", "?new") -> "path?new" */
+ /* uri_merge("path#foo", "?new") -> "path?new" */
+ int baselength = end - base;
+ merge = xmalloc (baselength + linklength + 1);
+ memcpy (merge, base, baselength);
+ memcpy (merge + baselength, link, linklength);
+ merge[baselength + linklength] = '\0';
+ }
+ else if (*link == '#')
+ {
+ /* uri_merge("path", "#new") -> "path#new" */
+ /* uri_merge("path#foo", "#new") -> "path#new" */
+ /* uri_merge("path?foo", "#new") -> "path?foo#new" */
+ /* uri_merge("path?foo#bar", "#new") -> "path?foo#new" */
+ int baselength;
+ const char *end1 = strchr (base, '#');
+ if (!end1)
+ end1 = base + strlen (base);
+ baselength = end1 - base;
+ merge = xmalloc (baselength + linklength + 1);
+ memcpy (merge, base, baselength);
+ memcpy (merge + baselength, link, linklength);
+ merge[baselength + linklength] = '\0';
+ }
+ else if (*link == '/' && *(link + 1) == '/')
+ {
+ /* LINK begins with "//" and so is a net path: we need to
+ replace everything after (and including) the double slash
+ with LINK. */
+
+ /* uri_merge("foo", "//new/bar") -> "//new/bar" */
+ /* uri_merge("//old/foo", "//new/bar") -> "//new/bar" */
+ /* uri_merge("http://old/foo", "//new/bar") -> "http://new/bar" */
+
+ int span;
+ const char *slash;
+ const char *start_insert;
+
+ /* Look for first slash. */
+ slash = memchr (base, '/', end - base);
+ /* If found slash and it is a double slash, then replace
+ from this point, else default to replacing from the
+ beginning. */
+ if (slash && *(slash + 1) == '/')
+ start_insert = slash;
+ else
+ start_insert = base;
+
+ span = start_insert - base;
+ merge = xmalloc (span + linklength + 1);
+ if (span)
+ memcpy (merge, base, span);
+ memcpy (merge + span, link, linklength);
+ merge[span + linklength] = '\0';
+ }
+ else if (*link == '/')
+ {
+ /* LINK is an absolute path: we need to replace everything
+ after (and including) the FIRST slash with LINK.
+
+ So, if BASE is "http://host/whatever/foo/bar", and LINK is
+ "/qux/xyzzy", our result should be
+ "http://host/qux/xyzzy". */
+ int span;
+ const char *slash;
+ const char *start_insert = NULL; /* for gcc to shut up. */
+ const char *pos = base;
+ bool seen_slash_slash = false;
+ /* We're looking for the first slash, but want to ignore
+ double slash. */
+ again:
+ slash = memchr (pos, '/', end - pos);
+ if (slash && !seen_slash_slash)
+ if (*(slash + 1) == '/')
+ {
+ pos = slash + 2;
+ seen_slash_slash = true;
+ goto again;
+ }
+
+ /* At this point, SLASH is the location of the first / after
+ "//", or the first slash altogether. START_INSERT is the
+ pointer to the location where LINK will be inserted. When
+ examining the last two examples, keep in mind that LINK
+ begins with '/'. */
+
+ if (!slash && !seen_slash_slash)
+ /* example: "foo" */
+ /* ^ */
+ start_insert = base;
+ else if (!slash && seen_slash_slash)
+ /* example: "http://foo" */
+ /* ^ */
+ start_insert = end;
+ else if (slash && !seen_slash_slash)
+ /* example: "foo/bar" */
+ /* ^ */
+ start_insert = base;
+ else if (slash && seen_slash_slash)
+ /* example: "http://something/" */
+ /* ^ */
+ start_insert = slash;
+
+ span = start_insert - base;
+ merge = xmalloc (span + linklength + 1);
+ if (span)
+ memcpy (merge, base, span);
+ memcpy (merge + span, link, linklength);
+ merge[span + linklength] = '\0';
+ }
+ else
+ {
+ /* LINK is a relative URL: we need to replace everything
+ after last slash (possibly empty) with LINK.
+
+ So, if BASE is "whatever/foo/bar", and LINK is "qux/xyzzy",
+ our result should be "whatever/foo/qux/xyzzy". */
+ bool need_explicit_slash = false;
+ int span;
+ const char *start_insert;
+ const char *last_slash = find_last_char (base, end, '/');
+ if (!last_slash)
+ {
+ /* No slash found at all. Replace what we have with LINK. */
+ start_insert = base;
+ }
+ else if (last_slash && last_slash >= base + 2
+ && last_slash[-2] == ':' && last_slash[-1] == '/')
+ {
+ /* example: http://host" */
+ /* ^ */
+ start_insert = end + 1;
+ need_explicit_slash = true;
+ }
+ else
+ {
+ /* example: "whatever/foo/bar" */
+ /* ^ */
+ start_insert = last_slash + 1;
+ }
+
+ span = start_insert - base;
+ merge = xmalloc (span + linklength + 1);
+ if (span)
+ memcpy (merge, base, span);
+ if (need_explicit_slash)
+ merge[span - 1] = '/';
+ memcpy (merge + span, link, linklength);
+ merge[span + linklength] = '\0';
+ }
+
+ return merge;
+}
+
+#define APPEND(p, s) do { \
+ int len = strlen (s); \
+ memcpy (p, s, len); \
+ p += len; \
+} while (0)
+
+/* Use this instead of password when the actual password is supposed
+ to be hidden. We intentionally use a generic string without giving
+ away the number of characters in the password, like previous
+ versions did. */
+#define HIDDEN_PASSWORD "*password*"
+
+/* Recreate the URL string from the data in URL.
+
+ If HIDE is true (as it is when we're calling this on a URL we plan
+ to print, but not when calling it to canonicalize a URL for use
+ within the program), password will be hidden. Unsafe characters in
+ the URL will be quoted. */
+
+char *
+url_string (const struct url *url, enum url_auth_mode auth_mode)
+{
+ int size;
+ char *result, *p;
+ char *quoted_host, *quoted_user = NULL, *quoted_passwd = NULL;
+
+ int scheme_port = supported_schemes[url->scheme].default_port;
+ const char *scheme_str = supported_schemes[url->scheme].leading_string;
+ int fplen = full_path_length (url);
+
+ bool brackets_around_host;
+
+ assert (scheme_str != NULL);
+
+ /* Make sure the user name and password are quoted. */
+ if (url->user)
+ {
+ if (auth_mode != URL_AUTH_HIDE)
+ {
+ quoted_user = url_escape_allow_passthrough (url->user);
+ if (url->passwd)
+ {
+ if (auth_mode == URL_AUTH_HIDE_PASSWD)
+ quoted_passwd = (char *) HIDDEN_PASSWORD;
+ else
+ quoted_passwd = url_escape_allow_passthrough (url->passwd);
+ }
+ }
+ }
+
+ /* In the unlikely event that the host name contains non-printable
+ characters, quote it for displaying to the user. */
+ quoted_host = url_escape_allow_passthrough (url->host);
+
+ /* Undo the quoting of colons that URL escaping performs. IPv6
+ addresses may legally contain colons, and in that case must be
+ placed in square brackets. */
+ if (quoted_host != url->host)
+ unescape_single_char (quoted_host, ':');
+ brackets_around_host = strchr (quoted_host, ':') != NULL;
+
+ size = (strlen (scheme_str)
+ + strlen (quoted_host)
+ + (brackets_around_host ? 2 : 0)
+ + fplen
+ + 1);
+ if (url->port != scheme_port)
+ size += 1 + numdigit (url->port);
+ if (quoted_user)
+ {
+ size += 1 + strlen (quoted_user);
+ if (quoted_passwd)
+ size += 1 + strlen (quoted_passwd);
+ }
+
+ p = result = xmalloc (size);
+
+ APPEND (p, scheme_str);
+ if (quoted_user)
+ {
+ APPEND (p, quoted_user);
+ if (quoted_passwd)
+ {
+ *p++ = ':';
+ APPEND (p, quoted_passwd);
+ }
+ *p++ = '@';
+ }
+
+ if (brackets_around_host)
+ *p++ = '[';
+ APPEND (p, quoted_host);
+ if (brackets_around_host)
+ *p++ = ']';
+ if (url->port != scheme_port)
+ {
+ *p++ = ':';
+ p = number_to_string (p, url->port);
+ }
+
+ full_path_write (url, p);
+ p += fplen;
+ *p++ = '\0';
+
+ assert (p - result == size);
+
+ if (quoted_user && quoted_user != url->user)
+ xfree (quoted_user);
+ if (quoted_passwd && auth_mode == URL_AUTH_SHOW
+ && quoted_passwd != url->passwd)
+ xfree (quoted_passwd);
+ if (quoted_host != url->host)
+ xfree (quoted_host);
+
+ return result;
+}
+
+/* Return true if scheme a is similar to scheme b.
+
+ Schemes are similar if they are equal. If SSL is supported, schemes
+ are also similar if one is http (SCHEME_HTTP) and the other is https
+ (SCHEME_HTTPS). */
+bool
+schemes_are_similar_p (enum url_scheme a, enum url_scheme b)
+{
+ if (a == b)
+ return true;
+#ifdef HAVE_SSL
+ if ((a == SCHEME_HTTP && b == SCHEME_HTTPS)
+ || (a == SCHEME_HTTPS && b == SCHEME_HTTP))
+ return true;
+#endif
+ return false;
+}
+
+static int
+getchar_from_escaped_string (const char *str, char *c)
+{
+ const char *p = str;
+
+ assert (str && *str);
+ assert (c);
+
+ if (p[0] == '%')
+ {
+ if (!c_isxdigit(p[1]) || !c_isxdigit(p[2]))
+ {
+ *c = '%';
+ return 1;
+ }
+ else
+ {
+ if (p[2] == 0)
+ return 0; /* error: invalid string */
+
+ *c = X2DIGITS_TO_NUM (p[1], p[2]);
+ if (URL_RESERVED_CHAR(*c))
+ {
+ *c = '%';
+ return 1;
+ }
+ else
+ return 3;
+ }
+ }
+ else
+ {
+ *c = p[0];
+ }
+
+ return 1;
+}
+
+bool
+are_urls_equal (const char *u1, const char *u2)
+{
+ const char *p, *q;
+ int pp, qq;
+ char ch1, ch2;
+ assert(u1 && u2);
+
+ p = u1;
+ q = u2;
+
+ while (*p && *q
+ && (pp = getchar_from_escaped_string (p, &ch1))
+ && (qq = getchar_from_escaped_string (q, &ch2))
+ && (c_tolower(ch1) == c_tolower(ch2)))
+ {
+ p += pp;
+ q += qq;
+ }
+
+ return (*p == 0 && *q == 0 ? true : false);
+}
+
+#ifdef TESTING
+/* Debugging and testing support for path_simplify. */
+
+#if 0
+/* Debug: run path_simplify on PATH and return the result in a new
+ string. Useful for calling from the debugger. */
+static char *
+ps (char *path)
+{
+ char *copy = xstrdup (path);
+ path_simplify (copy);
+ return copy;
+}
+#endif
+
+static const char *
+run_test (const char *test, const char *expected_result, enum url_scheme scheme,
+ bool expected_change)
+{
+ char *test_copy = xstrdup (test);
+ bool modified = path_simplify (scheme, test_copy);
+
+ if (0 != strcmp (test_copy, expected_result))
+ {
+ printf ("Failed path_simplify(\"%s\"): expected \"%s\", got \"%s\".\n",
+ test, expected_result, test_copy);
+ mu_assert ("", 0);
+ }
+ if (modified != expected_change)
+ {
+ if (expected_change)
+ printf ("Expected modification with path_simplify(\"%s\").\n",
+ test);
+ else
+ printf ("Expected no modification with path_simplify(\"%s\").\n",
+ test);
+ }
+ xfree (test_copy);
+ mu_assert ("", modified == expected_change);
+ return NULL;
+}
+
+const char *
+test_path_simplify (void)
+{
+ static const struct {
+ const char *test, *result;
+ enum url_scheme scheme;
+ bool should_modify;
+ } tests[] = {
+ { "", "", SCHEME_HTTP, false },
+ { ".", "", SCHEME_HTTP, true },
+ { "./", "", SCHEME_HTTP, true },
+ { "..", "", SCHEME_HTTP, true },
+ { "../", "", SCHEME_HTTP, true },
+ { "..", "..", SCHEME_FTP, false },
+ { "../", "../", SCHEME_FTP, false },
+ { "foo", "foo", SCHEME_HTTP, false },
+ { "foo/bar", "foo/bar", SCHEME_HTTP, false },
+ { "foo///bar", "foo///bar", SCHEME_HTTP, false },
+ { "foo/.", "foo/", SCHEME_HTTP, true },
+ { "foo/./", "foo/", SCHEME_HTTP, true },
+ { "foo./", "foo./", SCHEME_HTTP, false },
+ { "foo/../bar", "bar", SCHEME_HTTP, true },
+ { "foo/../bar/", "bar/", SCHEME_HTTP, true },
+ { "foo/bar/..", "foo/", SCHEME_HTTP, true },
+ { "foo/bar/../x", "foo/x", SCHEME_HTTP, true },
+ { "foo/bar/../x/", "foo/x/", SCHEME_HTTP, true },
+ { "foo/..", "", SCHEME_HTTP, true },
+ { "foo/../..", "", SCHEME_HTTP, true },
+ { "foo/../../..", "", SCHEME_HTTP, true },
+ { "foo/../../bar/../../baz", "baz", SCHEME_HTTP, true },
+ { "foo/../..", "..", SCHEME_FTP, true },
+ { "foo/../../..", "../..", SCHEME_FTP, true },
+ { "foo/../../bar/../../baz", "../../baz", SCHEME_FTP, true },
+ { "a/b/../../c", "c", SCHEME_HTTP, true },
+ { "./a/../b", "b", SCHEME_HTTP, true }
+ };
+ unsigned i;
+
+ for (i = 0; i < countof (tests); i++)
+ {
+ const char *message;
+ const char *test = tests[i].test;
+ const char *expected_result = tests[i].result;
+ enum url_scheme scheme = tests[i].scheme;
+ bool expected_change = tests[i].should_modify;
+
+ message = run_test (test, expected_result, scheme, expected_change);
+ if (message) return message;
+ }
+ return NULL;
+}
+
+const char *
+test_append_uri_pathel(void)
+{
+ unsigned i;
+ static const struct {
+ const char *original_url;
+ const char *input;
+ bool escaped;
+ const char *expected_result;
+ } test_array[] = {
+ { "http://www.yoyodyne.com/path/", "somepage.html", false, "http://www.yoyodyne.com/path/somepage.html" },
+ };
+
+ for (i = 0; i < countof(test_array); ++i)
+ {
+ struct growable dest;
+ const char *p = test_array[i].input;
+
+ memset (&dest, 0, sizeof (dest));
+
+ append_string (test_array[i].original_url, &dest);
+ append_uri_pathel (p, p + strlen(p), test_array[i].escaped, &dest);
+
+ mu_assert ("test_append_uri_pathel: wrong result",
+ strcmp (dest.base, test_array[i].expected_result) == 0);
+ xfree (dest.base);
+ }
+
+ return NULL;
+}
+
+const char *
+test_are_urls_equal(void)
+{
+ unsigned i;
+ static const struct {
+ const char *url1;
+ const char *url2;
+ bool expected_result;
+ } test_array[] = {
+ { "http://www.adomain.com/apath/", "http://www.adomain.com/apath/", true },
+ { "http://www.adomain.com/apath/", "http://www.adomain.com/anotherpath/", false },
+ { "http://www.adomain.com/apath/", "http://www.anotherdomain.com/path/", false },
+ { "http://www.adomain.com/~path/", "http://www.adomain.com/%7epath/", true },
+ { "http://www.adomain.com/longer-path/", "http://www.adomain.com/path/", false },
+ { "http://www.adomain.com/path%2f", "http://www.adomain.com/path/", false },
+ };
+
+ for (i = 0; i < countof(test_array); ++i)
+ {
+ mu_assert ("test_are_urls_equal: wrong result",
+ are_urls_equal (test_array[i].url1, test_array[i].url2) == test_array[i].expected_result);
+ }
+
+ return NULL;
+}
+
+#endif /* TESTING */
+
+/*
+ * vim: et ts=2 sw=2
+ */
diff --git a/src/url.h b/src/url.h
new file mode 100644
index 0000000..9313c2f
--- /dev/null
+++ b/src/url.h
@@ -0,0 +1,136 @@
+/* Declarations for url.c.
+ Copyright (C) 1996-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef URL_H
+#define URL_H
+
+/* Default port definitions */
+#define DEFAULT_HTTP_PORT 80
+#define DEFAULT_FTP_PORT 21
+#define DEFAULT_HTTPS_PORT 443
+#define DEFAULT_FTPS_IMPLICIT_PORT 990
+
+/* This represents how many characters less than the OS max name length a file
+ * should be. More precisely, a file name should be at most
+ * (NAME_MAX - CHOMP_BUFFER) characters in length. This number was arrived at
+ * by adding the lengths of all possible strings that could be appended to a
+ * file name later in the code (e.g. ".orig", ".html", etc.). This is
+ * hopefully plenty of extra characters, but I am not guaranteeing that a file
+ * name will be of the proper length by the time the code wants to open a
+ * file descriptor. */
+#define CHOMP_BUFFER 19
+
+/* The flags that allow clobbering the file (opening with "wb").
+ Defined here to avoid repetition later. #### This will require
+ rework. */
+#define ALLOW_CLOBBER (opt.noclobber || opt.always_rest || opt.timestamping \
+ || opt.dirstruct || opt.output_document || opt.backups > 0)
+
+/* Specifies how, or whether, user auth information should be included
+ * in URLs regenerated from URL parse structures. */
+enum url_auth_mode {
+ URL_AUTH_SHOW,
+ URL_AUTH_HIDE_PASSWD,
+ URL_AUTH_HIDE
+};
+
+/* Note: the ordering here is related to the order of elements in
+ `supported_schemes' in url.c. */
+
+enum url_scheme {
+ SCHEME_HTTP,
+#ifdef HAVE_SSL
+ SCHEME_HTTPS,
+#endif
+ SCHEME_FTP,
+#ifdef HAVE_SSL
+ SCHEME_FTPS,
+#endif
+ SCHEME_INVALID
+};
+
+/* Structure containing info on a URL. */
+struct url
+{
+ char *url; /* Original URL */
+ enum url_scheme scheme; /* URL scheme */
+
+ char *host; /* Extracted hostname */
+ int port; /* Port number */
+
+ /* URL components (URL-quoted). */
+ char *path;
+ char *params;
+ char *query;
+ char *fragment;
+
+ /* Extracted path info (unquoted). */
+ char *dir;
+ char *file;
+
+ /* Username and password (unquoted). */
+ char *user;
+ char *passwd;
+};
+
+/* Function declarations */
+
+char *url_escape (const char *);
+char *url_escape_unsafe_and_reserved (const char *);
+void url_unescape (char *);
+void url_unescape_except_reserved (char *);
+
+struct url *url_parse (const char *, int *, struct iri *iri, bool percent_encode);
+char *url_error (const char *, int);
+char *url_full_path (const struct url *);
+void url_set_dir (struct url *, const char *);
+void url_set_file (struct url *, const char *);
+void url_free (struct url *);
+
+enum url_scheme url_scheme (const char *);
+bool url_has_scheme (const char *);
+bool url_valid_scheme (const char *);
+int scheme_default_port (enum url_scheme);
+void scheme_disable (enum url_scheme);
+const char *scheme_leading_string (enum url_scheme);
+
+char *url_string (const struct url *, enum url_auth_mode);
+char *url_file_name (const struct url *, char *);
+
+char *uri_merge (const char *, const char *);
+
+int mkalldirs (const char *);
+
+char *rewrite_shorthand_url (const char *);
+bool schemes_are_similar_p (enum url_scheme a, enum url_scheme b);
+
+bool are_urls_equal (const char *u1, const char *u2);
+
+#endif /* URL_H */
diff --git a/src/utils.c b/src/utils.c
new file mode 100644
index 0000000..89a8687
--- /dev/null
+++ b/src/utils.c
@@ -0,0 +1,2993 @@
+/* Various utility functions.
+ Copyright (C) 1996-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+#include "sha256.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#ifdef HAVE_PROCESS_H
+# include <process.h> /* getpid() */
+#endif
+#include <errno.h>
+#include <fcntl.h>
+#include <assert.h>
+#include <stdarg.h>
+#include <locale.h>
+#include <errno.h>
+
+#if HAVE_UTIME
+# include <sys/types.h>
+# include <utime.h>
+# ifdef HAVE_SYS_UTIME_H
+# include <sys/utime.h>
+# endif
+#endif
+
+#include <sys/time.h>
+
+#include <sys/stat.h>
+
+/* For TIOCGWINSZ and friends: */
+#ifndef WINDOWS
+# include <sys/ioctl.h>
+# include <termios.h>
+#endif
+
+/* Needed for Unix version of run_with_timeout. */
+#include <signal.h>
+#include <setjmp.h>
+
+#include <regex.h>
+#ifdef HAVE_LIBPCRE2
+# define PCRE2_CODE_UNIT_WIDTH 8
+# include <pcre2.h>
+#elif defined HAVE_LIBPCRE
+# include <pcre.h>
+#endif
+
+#ifndef HAVE_SIGSETJMP
+/* If sigsetjmp is a macro, configure won't pick it up. */
+# ifdef sigsetjmp
+# define HAVE_SIGSETJMP
+# endif
+#endif
+
+#if defined HAVE_SIGSETJMP || defined HAVE_SIGBLOCK
+# define USE_SIGNAL_TIMEOUT
+#endif
+
+/* Some systems (Linux libc5, "NCR MP-RAS 3.0", and others) don't
+ provide MAP_FAILED, a symbolic constant for the value returned by
+ mmap() when it doesn't work. Usually, this constant should be -1.
+ This only makes sense for files that use mmap() and include
+ sys/mman.h *before* sysdep.h, but doesn't hurt others. */
+#ifdef HAVE_MMAP
+# include <sys/mman.h>
+# ifndef MAP_FAILED
+# define MAP_FAILED ((void *) -1)
+# endif
+#endif
+
+#include "utils.h"
+#include "hash.h"
+
+#ifdef __VMS
+#include "vms.h"
+#endif /* def __VMS */
+
+#ifdef TESTING
+#include "../tests/unit-tests.h"
+#endif
+
+#include "exits.h"
+#include "c-strcase.h"
+
+_Noreturn static void
+memfatal (const char *context, long attempted_size)
+{
+ /* Make sure we don't try to store part of the log line, and thus
+ call malloc. */
+ log_set_save_context (false);
+
+ /* We have different log outputs in different situations:
+ 1) output without bytes information
+ 2) output with bytes information */
+ if (attempted_size == UNKNOWN_ATTEMPTED_SIZE)
+ {
+ logprintf (LOG_ALWAYS,
+ _("%s: %s: Failed to allocate enough memory; memory exhausted.\n"),
+ exec_name, context);
+ }
+ else
+ {
+ logprintf (LOG_ALWAYS,
+ _("%s: %s: Failed to allocate %ld bytes; memory exhausted.\n"),
+ exec_name, context, attempted_size);
+ }
+
+ exit (WGET_EXIT_GENERIC_ERROR);
+}
+
+/* Character property table for (re-)escaping VMS ODS5 extended file
+ names. Note that this table ignores Unicode.
+
+ ODS2 valid characters: 0-9 A-Z a-z $ - _ ~
+
+ ODS5 Invalid characters:
+ C0 control codes (0x00 to 0x1F inclusive)
+ Asterisk (*)
+ Question mark (?)
+
+ ODS5 Invalid characters only in VMS V7.2 (which no one runs, right?):
+ Double quotation marks (")
+ Backslash (\)
+ Colon (:)
+ Left angle bracket (<)
+ Right angle bracket (>)
+ Slash (/)
+ Vertical bar (|)
+
+ Characters escaped by "^":
+ SP ! " # % & ' ( ) + , . : ; =
+ @ [ \ ] ^ ` { | } ~
+
+ Either "^_" or "^ " is accepted as a space. Period (.) is a special
+ case. Note that un-escaped < and > can also confuse a directory
+ spec.
+
+ Characters put out as ^xx:
+ 7F (DEL)
+ 80-9F (C1 control characters)
+ A0 (nonbreaking space)
+ FF (Latin small letter y diaeresis)
+
+ Other cases:
+ Unicode: "^Uxxxx", where "xxxx" is four hex digits.
+
+ Property table values:
+ Normal escape: 1
+ Space: 2
+ Dot: 4
+ Hex-hex escape: 8
+ ODS2 normal: 16
+ ODS2 lower case: 32
+ Hex digit: 64
+*/
+
+unsigned char char_prop[ 256] = {
+
+/* NUL SOH STX ETX EOT ENQ ACK BEL BS HT LF VT FF CR SO SI */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+
+/* DLE DC1 DC2 DC3 DC4 NAK SYN ETB CAN EM SUB ESC FS GS RS US */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+
+/* SP ! " # $ % & ' ( ) * + , - . / */
+ 2, 1, 1, 1, 16, 1, 1, 1, 1, 1, 0, 1, 1, 16, 4, 0,
+
+/* 0 1 2 3 4 5 6 7 8 9 : ; < = > ? */
+ 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 1, 1, 1, 1, 1, 1,
+
+/* @ A B C D E F G H I J K L M N O */
+ 1, 80, 80, 80, 80, 80, 80, 16, 16, 16, 16, 16, 16, 16, 16, 16,
+
+/* P Q R S T U V W X Y Z [ \ ] ^ _ */
+ 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 16,
+
+/* ` a b c d e f g h i j k l m n o */
+ 1, 96, 96, 96, 96, 96, 96, 32, 32, 32, 32, 32, 32, 32, 32, 32,
+
+/* p q r s t u v w x y z { | } ~ DEL */
+ 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 17, 8,
+
+ 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+ 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+ 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8
+};
+
+/* Utility function: like xstrdup(), but also lowercases S. */
+
+char *
+xstrdup_lower (const char *s)
+{
+ char *copy = xstrdup (s);
+ char *p = copy;
+ for (; *p; p++)
+ *p = c_tolower (*p);
+ return copy;
+}
+
+/* Copy the string formed by two pointers (one on the beginning, other
+ on the char after the last char) to a new, malloc-ed location.
+ 0-terminate it.
+ If both pointers are NULL, the function returns an empty string. */
+char *
+strdupdelim (const char *beg, const char *end)
+{
+ if (beg && beg <= end)
+ {
+ char *res = xmalloc (end - beg + 1);
+ memcpy (res, beg, end - beg);
+ res[end - beg] = '\0';
+ return res;
+ }
+
+ return xstrdup("");
+}
+
+/* Parse a string containing comma-separated elements, and return a
+ vector of char pointers with the elements. Spaces following the
+ commas are ignored. */
+char **
+sepstring (const char *s)
+{
+ char **res;
+ const char *p;
+ int i = 0;
+
+ if (!s || !*s)
+ return NULL;
+ res = NULL;
+ p = s;
+ while (*s)
+ {
+ if (*s == ',')
+ {
+ res = xrealloc (res, (i + 2) * sizeof (char *));
+ res[i] = strdupdelim (p, s);
+ res[++i] = NULL;
+ ++s;
+ /* Skip the blanks following the ','. */
+ while (c_isspace (*s))
+ ++s;
+ p = s;
+ }
+ else
+ ++s;
+ }
+ res = xrealloc (res, (i + 2) * sizeof (char *));
+ res[i] = strdupdelim (p, s);
+ res[i + 1] = NULL;
+ return res;
+}
+
+/* Like sprintf, but prints into a string of sufficient size freshly
+ allocated with malloc, which is returned. If unable to print due
+ to invalid format, returns NULL. Inability to allocate needed
+ memory results in abort, as with xmalloc. This is in spirit
+ similar to the GNU/BSD extension asprintf, but somewhat easier to
+ use.
+
+ Internally the function either calls vasprintf or loops around
+ vsnprintf until the correct size is found. Since Wget also ships a
+ fallback implementation of vsnprintf, this should be portable. */
+
+char *
+aprintf (const char *fmt, ...)
+{
+#if defined HAVE_VASPRINTF && !defined DEBUG_MALLOC
+ /* Use vasprintf. */
+ int ret;
+ va_list args;
+ char *str;
+ va_start (args, fmt);
+ ret = vasprintf (&str, fmt, args);
+ va_end (args);
+ if (ret < 0 && errno == ENOMEM)
+ memfatal ("aprintf", UNKNOWN_ATTEMPTED_SIZE); /* for consistency
+ with xmalloc/xrealloc */
+ else if (ret < 0)
+ return NULL;
+ return str;
+#else /* not HAVE_VASPRINTF */
+
+/* Constant is using for limits memory allocation for text buffer.
+ Applicable in situation when: vasprintf is not available in the system
+ and vsnprintf return -1 when long line is truncated (in old versions of
+ glibc and in other system where C99 doesn`t support) */
+
+#define FMT_MAX_LENGTH 1048576
+
+ /* vasprintf is unavailable. snprintf into a small buffer and
+ resize it as necessary. */
+ int size = 32;
+ char *str = xmalloc (size);
+
+ /* #### This code will infloop and eventually abort in xrealloc if
+ passed a FMT that causes snprintf to consistently return -1. */
+
+ while (1)
+ {
+ int n;
+ va_list args;
+
+ va_start (args, fmt);
+ n = vsnprintf (str, size, fmt, args);
+ va_end (args);
+
+ /* If the printing worked, return the string. */
+ if (n > -1 && n < size)
+ return str;
+
+ /* Else try again with a larger buffer. */
+ if (n > -1) /* C99 */
+ size = n + 1; /* precisely what is needed */
+ else if (size >= FMT_MAX_LENGTH) /* We have a huge buffer, */
+ { /* maybe we have some wrong
+ format string? */
+ logprintf (LOG_ALWAYS,
+ _("%s: aprintf: text buffer is too big (%d bytes), "
+ "aborting.\n"),
+ exec_name, size); /* printout a log message */
+ abort (); /* and abort... */
+ }
+ else
+ {
+ /* else, we continue to grow our
+ * buffer: Twice the old size. */
+ size <<= 1;
+ }
+ str = xrealloc (str, size);
+ }
+#endif /* not HAVE_VASPRINTF */
+}
+
+#ifndef HAVE_STRLCPY
+/* strlcpy() is a BSD function that sometimes is really handy.
+ * It is the same as snprintf(dst,dstsize,"%s",src), but much faster. */
+
+size_t
+strlcpy (char *dst, const char *src, size_t size)
+{
+ const char *old = src;
+
+ /* Copy as many bytes as will fit */
+ if (size)
+ {
+ while (--size)
+ {
+ if (!(*dst++ = *src++))
+ return src - old - 1;
+ }
+
+ *dst = 0;
+ }
+
+ while (*src++);
+ return src - old - 1;
+}
+#endif
+
+/* Concatenate the NULL-terminated list of string arguments into
+ freshly allocated space. */
+
+char *
+concat_strings (const char *str0, ...)
+{
+ va_list args;
+ const char *arg;
+ size_t length = 0, pos = 0;
+ char *s;
+
+ if (!str0)
+ return NULL;
+
+ /* calculate the length of the resulting string */
+ va_start (args, str0);
+ for (arg = str0; arg; arg = va_arg (args, const char *))
+ length += strlen(arg);
+ va_end (args);
+
+ s = xmalloc (length + 1);
+
+ /* concatenate strings */
+ va_start (args, str0);
+ for (arg = str0; arg; arg = va_arg (args, const char *))
+ pos += strlcpy(s + pos, arg, length - pos + 1);
+ va_end (args);
+
+ return s;
+}
+
+/* Format the provided time according to the specified format. The
+ format is a string with format elements supported by strftime. */
+
+static char *
+fmttime (time_t t, const char *fmt)
+{
+ static char output[32];
+ struct tm *tm = localtime(&t);
+ if (!tm)
+ abort ();
+ if (!strftime(output, sizeof(output), fmt, tm))
+ abort ();
+ return output;
+}
+
+/* Return pointer to a static char[] buffer in which zero-terminated
+ string-representation of TM (in form hh:mm:ss) is printed.
+
+ If TM is NULL, the current time will be used. */
+
+char *
+time_str (time_t t)
+{
+ return fmttime(t, "%H:%M:%S");
+}
+
+/* Like the above, but include the date: YYYY-MM-DD hh:mm:ss. */
+
+char *
+datetime_str (time_t t)
+{
+ return fmttime(t, "%Y-%m-%d %H:%M:%S");
+}
+
+/* The Windows versions of the following two functions are defined in
+ mswindows.c. On MSDOS this function should never be called. */
+
+#ifdef __VMS
+
+bool
+fork_to_background (void)
+{
+ return false;
+}
+
+#else /* def __VMS */
+
+#if !defined(WINDOWS) && !defined(MSDOS)
+bool
+fork_to_background (void)
+{
+ pid_t pid;
+ /* Whether we arrange our own version of opt.lfilename here. */
+ bool logfile_changed = false;
+
+ if (!opt.lfilename && (!opt.quiet || opt.server_response))
+ {
+ /* We must create the file immediately to avoid either a race
+ condition (which arises from using unique_name and failing to
+ use fopen_excl) or lying to the user about the log file name
+ (which arises from using unique_name, printing the name, and
+ using fopen_excl later on.) */
+ FILE *new_log_fp = unique_create (DEFAULT_LOGFILE, false, &opt.lfilename);
+ if (new_log_fp)
+ {
+ logfile_changed = true;
+ fclose (new_log_fp);
+ }
+ }
+ pid = fork ();
+ if (pid < 0)
+ {
+ /* parent, error */
+ perror ("fork");
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ else if (pid != 0)
+ {
+ /* parent, no error */
+ printf (_("Continuing in background, pid %d.\n"), (int) pid);
+ if (logfile_changed)
+ printf (_("Output will be written to %s.\n"), quote (opt.lfilename));
+ exit (WGET_EXIT_SUCCESS); /* #### should we use _exit()? */
+ }
+
+ /* child: give up the privileges and keep running. */
+ setsid ();
+ if (freopen ("/dev/null", "r", stdin) == NULL)
+ DEBUGP (("Failed to redirect stdin to /dev/null.\n"));
+ if (freopen ("/dev/null", "w", stdout) == NULL)
+ DEBUGP (("Failed to redirect stdout to /dev/null.\n"));
+ if (freopen ("/dev/null", "w", stderr) == NULL)
+ DEBUGP (("Failed to redirect stderr to /dev/null.\n"));
+
+ return logfile_changed;
+}
+#endif /* !WINDOWS && !MSDOS */
+
+#endif /* def __VMS [else] */
+
+
+/* "Touch" FILE, i.e. make its mtime ("modified time") equal the time
+ specified with TM. The atime ("access time") is set to the current
+ time. */
+
+void
+touch (const char *file, time_t tm)
+{
+ struct utimbuf times;
+
+ times.modtime = tm;
+ times.actime = time (NULL);
+
+ if (utime (file, &times) == -1)
+ logprintf (LOG_NOTQUIET, "utime(%s): %s\n", file, strerror (errno));
+}
+
+/* Checks if FILE is a symbolic link, and removes it if it is. Does
+ nothing under MS-Windows. */
+int
+remove_link (const char *file)
+{
+ int err = 0;
+ struct stat st;
+
+ if (lstat (file, &st) == 0 && S_ISLNK (st.st_mode))
+ {
+ DEBUGP (("Unlinking %s (symlink).\n", file));
+ err = unlink (file);
+ if (err != 0)
+ logprintf (LOG_VERBOSE, _("Failed to unlink symlink %s: %s\n"),
+ quote (file), strerror (errno));
+ }
+ return err;
+}
+
+/* Does FILENAME exist? */
+bool
+file_exists_p (const char *filename, file_stats_t *fstats)
+{
+ struct stat buf;
+
+ if (!filename)
+ return false;
+
+#if defined(WINDOWS) || defined(__VMS)
+ int ret = stat (filename, &buf);
+ if (ret >= 0)
+ {
+ if (fstats != NULL)
+ fstats->access_err = errno;
+ }
+ return ret >= 0;
+#else
+ errno = 0;
+ if (stat (filename, &buf) == 0 && S_ISREG(buf.st_mode) &&
+ (((S_IRUSR & buf.st_mode) && (getuid() == buf.st_uid)) ||
+ ((S_IRGRP & buf.st_mode) && group_member(buf.st_gid)) ||
+ (S_IROTH & buf.st_mode))) {
+ if (fstats != NULL)
+ {
+ fstats->access_err = 0;
+ fstats->st_ino = buf.st_ino;
+ fstats->st_dev = buf.st_dev;
+ }
+ return true;
+ }
+ else
+ {
+ if (fstats != NULL)
+ fstats->access_err = (errno == 0 ? EACCES : errno);
+ errno = 0;
+ return false;
+ }
+ /* NOTREACHED */
+#endif
+}
+
+/* Returns 0 if PATH is a directory, 1 otherwise (any kind of file).
+ Returns 0 on error. */
+bool
+file_non_directory_p (const char *path)
+{
+ struct stat buf;
+ /* Use lstat() rather than stat() so that symbolic links pointing to
+ directories can be identified correctly. */
+ if (lstat (path, &buf) != 0)
+ return false;
+ return S_ISDIR (buf.st_mode) ? false : true;
+}
+
+/* Return the size of file named by FILENAME, or -1 if it cannot be
+ opened or sought into. */
+wgint
+file_size (const char *filename)
+{
+#if defined(HAVE_FSEEKO) && defined(HAVE_FTELLO)
+ wgint size;
+ /* We use fseek rather than stat to determine the file size because
+ that way we can also verify that the file is readable without
+ explicitly checking for permissions. Inspired by the POST patch
+ by Arnaud Wylie. */
+ FILE *fp = fopen (filename, "rb");
+ if (!fp)
+ return -1;
+ fseeko (fp, 0, SEEK_END);
+ size = ftello (fp);
+ fclose (fp);
+ return size;
+#else
+ struct stat st;
+ if (stat (filename, &st) < 0)
+ return -1;
+ return st.st_size;
+#endif
+}
+
+/* 2005-02-19 SMS.
+ If no UNIQ_SEP is defined (as on VMS), have unique_name() return the
+ original name. With the VMS file systems' versioning, everything
+ should be fine, and appending ".NN" just causes trouble.
+*/
+
+#ifdef UNIQ_SEP
+
+/* stat file names named PREFIX.1, PREFIX.2, etc., until one that
+ doesn't exist is found. Return a freshly allocated copy of the
+ unused file name. */
+
+static char *
+unique_name_1 (const char *prefix)
+{
+ int count = 1;
+ int plen = strlen (prefix);
+ char *template = xmalloc (plen + 1 + 24);
+ char *template_tail = template + plen;
+
+ memcpy (template, prefix, plen);
+ *template_tail++ = UNIQ_SEP;
+
+ do
+ number_to_string (template_tail, count++);
+ while (file_exists_p (template, NULL) && count < 999999);
+
+ return template;
+}
+
+/* Return a unique file name, based on FILE.
+
+ More precisely, if FILE doesn't exist, it is returned unmodified.
+ If not, FILE.1 is tried, then FILE.2, etc. The first FILE.<number>
+ file name that doesn't exist is returned.
+
+ 2005-02-19 SMS. "." is now UNIQ_SEP, and may be different.
+
+ The resulting file is not created, only verified that it didn't
+ exist at the point in time when the function was called.
+ Therefore, where security matters, don't rely that the file created
+ by this function exists until you open it with O_EXCL or
+ equivalent.
+
+ unique_name() always returns a freshly allocated string.
+
+ unique_name_passthrough() may return FILE if the file doesn't exist
+ (and therefore doesn't need changing). */
+
+char *
+unique_name_passthrough (const char *file)
+{
+ /* If the FILE itself doesn't exist, return it without
+ modification. Otherwise, find a numeric suffix that results in unused
+ file name and return it. */
+ return file_exists_p (file, NULL) ? unique_name_1 (file) : (char *) file;
+}
+
+char *
+unique_name (const char *file)
+{
+ /* If the FILE itself doesn't exist, return it without
+ modification. Otherwise, find a numeric suffix that results in unused
+ file name and return it. */
+ return file_exists_p (file, NULL) ? unique_name_1 (file) : xstrdup (file);
+}
+
+#else /* def UNIQ_SEP */
+
+/* Dummy unique_name() for VMS. Return the original name as easily as
+ possible.
+*/
+char *
+unique_name_passthrough (const char *file, bool allow_passthrough)
+{
+ /* Return the FILE itself, without modification, irregardful. */
+ return (char *) file);
+}
+char *
+
+unique_name (const char *file)
+{
+ /* Return the FILE itself, without modification, irregardful. */
+ return xstrdup (file);
+}
+
+#endif /* def UNIQ_SEP [else] */
+
+/* Create a file based on NAME, except without overwriting an existing
+ file with that name. Providing O_EXCL is correctly implemented,
+ this function does not have the race condition associated with
+ opening the file returned by unique_name. */
+
+FILE *
+unique_create (const char *name, bool binary, char **opened_name)
+{
+ /* unique file name, based on NAME */
+ char *uname = unique_name (name);
+ FILE *fp;
+ while ((fp = fopen_excl (uname, binary)) == NULL && errno == EEXIST)
+ {
+ xfree (uname);
+ uname = unique_name (name);
+ }
+ if (opened_name)
+ {
+ if (fp)
+ *opened_name = uname;
+ else
+ {
+ *opened_name = NULL;
+ xfree (uname);
+ }
+ }
+ else
+ xfree (uname);
+ return fp;
+}
+
+/* Open the file for writing, with the addition that the file is
+ opened "exclusively". This means that, if the file already exists,
+ this function will *fail* and errno will be set to EEXIST. If
+ BINARY is set, the file will be opened in binary mode, equivalent
+ to fopen's "wb".
+
+ If opening the file fails for any reason, including the file having
+ previously existed, this function returns NULL and sets errno
+ appropriately. */
+
+FILE *
+fopen_excl (const char *fname, int binary)
+{
+ int fd;
+#ifdef O_EXCL
+
+/* 2005-04-14 SMS.
+ VMS lacks O_BINARY, but makes up for it in weird and wonderful ways.
+ It also has file versions which obviate all the O_EXCL effort.
+ O_TRUNC (something of a misnomer) requests a new version.
+*/
+# ifdef __VMS
+/* Common open() optional arguments:
+ sequential access only, access callback function.
+*/
+# define OPEN_OPT_ARGS "fop=sqo", "acc", acc_cb, &open_id
+
+ int open_id;
+ int flags = O_WRONLY | O_CREAT | O_TRUNC;
+
+ if (binary > 1)
+ {
+ open_id = 11;
+ fd = open( fname, /* File name. */
+ flags, /* Flags. */
+ 0777, /* Mode for default protection. */
+ "ctx=bin,stm", /* Binary, stream access. */
+ "rfm=stmlf", /* Stream_LF. */
+ OPEN_OPT_ARGS); /* Access callback. */
+ }
+ else if (binary)
+ {
+ open_id = 12;
+ fd = open( fname, /* File name. */
+ flags, /* Flags. */
+ 0777, /* Mode for default protection. */
+ "ctx=bin,stm", /* Binary, stream access. */
+ "rfm=fix", /* Fixed-length, */
+ "mrs=512", /* 512-byte records. */
+ OPEN_OPT_ARGS); /* Access callback. */
+ }
+ else
+ {
+ open_id = 13;
+ fd = open( fname, /* File name. */
+ flags, /* Flags. */
+ 0777, /* Mode for default protection. */
+ "rfm=stmlf", /* Stream_LF. */
+ OPEN_OPT_ARGS); /* Access callback. */
+ }
+# else /* def __VMS */
+ int flags = O_WRONLY | O_CREAT | O_EXCL;
+# ifdef O_BINARY
+ if (binary)
+ flags |= O_BINARY;
+# endif
+ fd = open (fname, flags, 0666);
+# endif /* def __VMS [else] */
+
+ if (fd < 0)
+ return NULL;
+ return fdopen (fd, binary ? "wb" : "w");
+#else /* not O_EXCL */
+ /* Manually check whether the file exists. This is prone to race
+ conditions, but systems without O_EXCL haven't deserved
+ better. */
+ if (file_exists_p (fname, NULL))
+ {
+ errno = EEXIST;
+ return NULL;
+ }
+ return fopen (fname, binary ? "wb" : "w");
+#endif /* not O_EXCL */
+}
+
+/* fopen_stat() assumes that file_exists_p() was called earlier.
+ file_stats_t passed to this function was returned from file_exists_p()
+ This is to prevent TOCTTOU race condition.
+ Details : FIO45-C from https://www.securecoding.cert.org/
+ Note that for creating a new file, this check is not useful
+
+ Input:
+ fname => Name of file to open
+ mode => File open mode
+ fstats => Saved file_stats_t about file that was checked for existence
+
+ Returns:
+ NULL if there was an error
+ FILE * of opened file stream
+*/
+FILE *
+fopen_stat(const char *fname, const char *mode, file_stats_t *fstats)
+{
+ int fd;
+ FILE *fp;
+ struct stat fdstats;
+
+#if defined FUZZING && defined TESTING
+ fp = fopen_wgetrc (fname, mode);
+ return fp;
+#else
+ fp = fopen (fname, mode);
+#endif
+ if (fp == NULL)
+ {
+ logprintf (LOG_NOTQUIET, _("Failed to Fopen file %s\n"), fname);
+ return NULL;
+ }
+ fd = fileno (fp);
+ if (fd < 0)
+ {
+ logprintf (LOG_NOTQUIET, _("Failed to get FD for file %s\n"), fname);
+ fclose (fp);
+ return NULL;
+ }
+ memset(&fdstats, 0, sizeof(fdstats));
+ if (fstat (fd, &fdstats) == -1)
+ {
+ logprintf (LOG_NOTQUIET, _("Failed to stat file %s, (check permissions)\n"), fname);
+ fclose (fp);
+ return NULL;
+ }
+#if !(defined(WINDOWS) || defined(__VMS))
+ if (fstats != NULL &&
+ (fdstats.st_dev != fstats->st_dev ||
+ fdstats.st_ino != fstats->st_ino))
+ {
+ /* File changed since file_exists_p() : NOT SAFE */
+ logprintf (LOG_NOTQUIET, _("File %s changed since the last check. Security check failed.\n"), fname);
+ fclose (fp);
+ return NULL;
+ }
+#endif
+
+ return fp;
+}
+
+/* open_stat assumes that file_exists_p() was called earlier to save file_stats
+ file_stats_t passed to this function was returned from file_exists_p()
+ This is to prevent TOCTTOU race condition.
+ Details : FIO45-C from https://www.securecoding.cert.org/
+ Note that for creating a new file, this check is not useful
+
+
+ Input:
+ fname => Name of file to open
+ flags => File open flags
+ mode => File open mode
+ fstats => Saved file_stats_t about file that was checked for existence
+
+ Returns:
+ -1 if there was an error
+ file descriptor of opened file stream
+*/
+int
+open_stat(const char *fname, int flags, mode_t mode, file_stats_t *fstats)
+{
+ int fd;
+ struct stat fdstats;
+
+ fd = open (fname, flags, mode);
+ if (fd < 0)
+ {
+ logprintf (LOG_NOTQUIET, _("Failed to open file %s, reason :%s\n"), fname, strerror(errno));
+ return -1;
+ }
+ memset(&fdstats, 0, sizeof(fdstats));
+ if (fstat (fd, &fdstats) == -1)
+ {
+ logprintf (LOG_NOTQUIET, _("Failed to stat file %s, error: %s\n"), fname, strerror(errno));
+ close (fd);
+ return -1;
+ }
+#if !(defined(WINDOWS) || defined(__VMS))
+ if (fstats != NULL &&
+ (fdstats.st_dev != fstats->st_dev ||
+ fdstats.st_ino != fstats->st_ino))
+ {
+ /* File changed since file_exists_p() : NOT SAFE */
+ logprintf (LOG_NOTQUIET, _("Trying to open file %s but it changed since last check. Security check failed.\n"), fname);
+ close (fd);
+ return -1;
+ }
+#endif
+
+ return fd;
+}
+
+/* Create DIRECTORY. If some of the pathname components of DIRECTORY
+ are missing, create them first. In case any mkdir() call fails,
+ return its error status. Returns 0 on successful completion.
+
+ The behaviour of this function should be identical to the behaviour
+ of `mkdir -p' on systems where mkdir supports the `-p' option. */
+int
+make_directory (const char *directory)
+{
+ int i, ret, quit = 0;
+ char buf[1024];
+ char *dir;
+ size_t len = strlen (directory);
+
+ /* Make a copy of dir, to be able to write to it. Otherwise, the
+ function is unsafe if called with a read-only char *argument. */
+ if (len < sizeof(buf))
+ {
+ memcpy(buf, directory, len + 1);
+ dir = buf;
+ }
+ else
+ dir = xstrdup(directory);
+
+ /* If the first character of dir is '/', skip it (and thus enable
+ creation of absolute-pathname directories. */
+ for (i = (*dir == '/'); 1; ++i)
+ {
+ for (; dir[i] && dir[i] != '/'; i++)
+ ;
+ if (!dir[i])
+ quit = 1;
+ dir[i] = '\0';
+ /* Check whether the directory already exists. Allow creation of
+ of intermediate directories to fail, as the initial path components
+ are not necessarily directories! */
+ if (!file_exists_p (dir, NULL))
+ ret = mkdir (dir, 0777);
+ else
+ ret = 0;
+ if (quit)
+ break;
+ else
+ dir[i] = '/';
+ }
+
+ if (dir != buf)
+ xfree (dir);
+
+ return ret;
+}
+
+/* Merge BASE with FILE. BASE can be a directory or a file name, FILE
+ should be a file name.
+
+ file_merge("/foo/bar", "baz") => "/foo/baz"
+ file_merge("/foo/bar/", "baz") => "/foo/bar/baz"
+ file_merge("foo", "bar") => "bar"
+
+ In other words, it's a simpler and gentler version of uri_merge. */
+
+char *
+file_merge (const char *base, const char *file)
+{
+ char *result;
+ const char *cut = (const char *)strrchr (base, '/');
+
+ if (!cut)
+ return xstrdup (file);
+
+ result = xmalloc (cut - base + 1 + strlen (file) + 1);
+ memcpy (result, base, cut - base);
+ result[cut - base] = '/';
+ strcpy (result + (cut - base) + 1, file);
+
+ return result;
+}
+
+/* Like fnmatch, but performs a case-insensitive match. */
+
+int
+fnmatch_nocase (const char *pattern, const char *string, int flags)
+{
+ /* The FNM_CASEFOLD flag started as a GNU extension, but it is now
+ also present on *BSD platforms, and possibly elsewhere.
+ Gnulib provides this flag in case it doesn't exist. */
+ return fnmatch (pattern, string, flags | FNM_CASEFOLD);
+}
+
+static bool in_acclist (const char *const *, const char *, bool);
+
+/* Determine whether a file is acceptable to be followed, according to
+ lists of patterns to accept/reject. */
+bool
+acceptable (const char *s)
+{
+ const char *p;
+
+ if (opt.output_document && strcmp (s, opt.output_document) == 0)
+ return true;
+
+ if ((p = strrchr (s, '/')))
+ s = p + 1;
+
+ if (opt.accepts)
+ {
+ if (opt.rejects)
+ return (in_acclist ((const char *const *)opt.accepts, s, true)
+ && !in_acclist ((const char *const *)opt.rejects, s, true));
+ else
+ return in_acclist ((const char *const *)opt.accepts, s, true);
+ }
+ else if (opt.rejects)
+ return !in_acclist ((const char *const *)opt.rejects, s, true);
+
+ return true;
+}
+
+/* Determine whether an URL is acceptable to be followed, according to
+ regex patterns to accept/reject. */
+bool
+accept_url (const char *s)
+{
+ if (opt.acceptregex && !opt.regex_match_fun (opt.acceptregex, s))
+ return false;
+ if (opt.rejectregex && opt.regex_match_fun (opt.rejectregex, s))
+ return false;
+
+ return true;
+}
+
+/* Check if D2 is a subdirectory of D1. E.g. if D1 is `/something', subdir_p()
+ will return true if and only if D2 begins with `/something/' or is exactly
+ '/something'. */
+bool
+subdir_p (const char *d1, const char *d2)
+{
+ if (*d1 == '\0')
+ return true;
+ if (!opt.ignore_case)
+ for (; *d1 && *d2 && (*d1 == *d2); ++d1, ++d2)
+ ;
+ else
+ for (; *d1 && *d2 && (c_tolower (*d1) == c_tolower (*d2)); ++d1, ++d2)
+ ;
+
+ return *d1 == '\0' && (*d2 == '\0' || *d2 == '/');
+}
+
+/* Iterate through DIRLIST (which must be NULL-terminated), and return the
+ first element that matches DIR, through wildcards or front comparison (as
+ appropriate). */
+static bool
+dir_matches_p (const char **dirlist, const char *dir)
+{
+ const char **x;
+ int (*matcher) (const char *, const char *, int)
+ = opt.ignore_case ? fnmatch_nocase : fnmatch;
+
+ for (x = dirlist; *x; x++)
+ {
+ /* Remove leading '/' */
+ const char *p = *x + (**x == '/');
+ if (has_wildcards_p (p))
+ {
+ if (matcher (p, dir, FNM_PATHNAME) == 0)
+ break;
+ }
+ else
+ {
+ if (subdir_p (p, dir))
+ break;
+ }
+ }
+
+ return *x ? true : false;
+}
+
+/* Returns whether DIRECTORY is acceptable for download, wrt the
+ include/exclude lists.
+
+ The leading `/' is ignored in paths; relative and absolute paths
+ may be freely intermixed. */
+
+bool
+accdir (const char *directory)
+{
+ /* Remove starting '/'. */
+ if (*directory == '/')
+ ++directory;
+ if (opt.includes)
+ {
+ if (!dir_matches_p (opt.includes, directory))
+ return false;
+ }
+ if (opt.excludes)
+ {
+ if (dir_matches_p (opt.excludes, directory))
+ return false;
+ }
+ return true;
+}
+
+/* Return true if STRING ends with TAIL. For instance:
+
+ match_tail ("abc", "bc", false) -> 1
+ match_tail ("abc", "ab", false) -> 0
+ match_tail ("abc", "abc", false) -> 1
+
+ If FOLD_CASE is true, the comparison will be case-insensitive. */
+
+bool
+match_tail (const char *string, const char *tail, bool fold_case)
+{
+ int pos = (int) strlen (string) - (int) strlen (tail);
+
+ if (pos < 0)
+ return false; /* tail is longer than string. */
+
+ if (!fold_case)
+ return !strcmp (string + pos, tail);
+ else
+ return !strcasecmp (string + pos, tail);
+}
+
+/* Checks whether string S matches each element of ACCEPTS. A list
+ element are matched either with fnmatch() or match_tail(),
+ according to whether the element contains wildcards or not.
+
+ If the BACKWARD is false, don't do backward comparison -- just compare
+ them normally. */
+static bool
+in_acclist (const char *const *accepts, const char *s, bool backward)
+{
+ for (; *accepts; accepts++)
+ {
+ if (has_wildcards_p (*accepts))
+ {
+ int res = opt.ignore_case
+ ? fnmatch_nocase (*accepts, s, 0) : fnmatch (*accepts, s, 0);
+ /* fnmatch returns 0 if the pattern *does* match the string. */
+ if (res == 0)
+ return true;
+ }
+ else
+ {
+ if (backward)
+ {
+ if (match_tail (s, *accepts, opt.ignore_case))
+ return true;
+ }
+ else
+ {
+ int cmp = opt.ignore_case
+ ? strcasecmp (s, *accepts) : strcmp (s, *accepts);
+ if (cmp == 0)
+ return true;
+ }
+ }
+ }
+ return false;
+}
+
+/* Return the location of STR's suffix (file extension). Examples:
+ suffix ("foo.bar") -> "bar"
+ suffix ("foo.bar.baz") -> "baz"
+ suffix ("/foo/bar") -> NULL
+ suffix ("/foo.bar/baz") -> NULL */
+char *
+suffix (const char *str)
+{
+ char *p;
+
+ if ((p = strrchr (str, '.')) && !strchr (p + 1, '/'))
+ return p + 1;
+
+ return NULL;
+}
+
+/* Return true if S contains globbing wildcards (`*', `?', `[' or
+ `]'). */
+
+bool
+has_wildcards_p (const char *s)
+{
+ return !!strpbrk (s, "*?[]");
+}
+
+/* Return true if FNAME ends with a typical HTML suffix. The
+ following (case-insensitive) suffixes are presumed to be HTML
+ files:
+
+ html
+ htm
+ ?html (`?' matches one character)
+
+ #### CAVEAT. This is not necessarily a good indication that FNAME
+ refers to a file that contains HTML! */
+bool
+has_html_suffix_p (const char *fname)
+{
+ char *suf;
+
+ if ((suf = suffix (fname)) == NULL)
+ return false;
+ if (!c_strcasecmp (suf, "html"))
+ return true;
+ if (!c_strcasecmp (suf, "htm"))
+ return true;
+ if (suf[0] && !c_strcasecmp (suf + 1, "html"))
+ return true;
+ return false;
+}
+
+/* Read FILE into memory. A pointer to `struct file_memory' are
+ returned; use struct element `content' to access file contents, and
+ the element `length' to know the file length. `content' is *not*
+ zero-terminated, and you should *not* read or write beyond the [0,
+ length) range of characters.
+
+ After you are done with the file contents, call wget_read_file_free to
+ release the memory.
+
+ Depending on the operating system and the type of file that is
+ being read, wget_read_file() either mmap's the file into memory, or
+ reads the file into the core using read().
+
+ If file is named "-", fileno(stdin) is used for reading instead.
+ If you want to read from a real file named "-", use "./-" instead. */
+
+struct file_memory *
+wget_read_file (const char *file)
+{
+ int fd;
+ struct file_memory *fm;
+ long size;
+ bool inhibit_close = false;
+
+ /* Some magic in the finest tradition of Perl and its kin: if FILE
+ is "-", just use stdin. */
+#ifndef FUZZING
+ if (HYPHENP (file))
+ {
+ fd = fileno (stdin);
+ inhibit_close = true;
+ /* Note that we don't inhibit mmap() in this case. If stdin is
+ redirected from a regular file, mmap() will still work. */
+ }
+ else
+#endif
+ fd = open (file, O_RDONLY);
+ if (fd < 0)
+ return NULL;
+ fm = xnew (struct file_memory);
+
+#ifdef HAVE_MMAP
+ {
+ struct stat buf;
+ if (fstat (fd, &buf) < 0)
+ goto mmap_lose;
+ fm->length = buf.st_size;
+ /* NOTE: As far as I know, the callers of this function never
+ modify the file text. Relying on this would enable us to
+ specify PROT_READ and MAP_SHARED for a marginal gain in
+ efficiency, but at some cost to generality. */
+ fm->content = mmap (NULL, fm->length, PROT_READ | PROT_WRITE,
+ MAP_PRIVATE, fd, 0);
+ if (fm->content == (char *)MAP_FAILED)
+ goto mmap_lose;
+ if (!inhibit_close)
+ close (fd);
+
+ fm->mmap_p = 1;
+ return fm;
+ }
+
+ mmap_lose:
+ /* The most common reason why mmap() fails is that FD does not point
+ to a plain file. However, it's also possible that mmap() doesn't
+ work for a particular type of file. Therefore, whenever mmap()
+ fails, we just fall back to the regular method. */
+#endif /* HAVE_MMAP */
+
+ fm->length = 0;
+ size = 512; /* number of bytes fm->contents can
+ hold at any given time. */
+ fm->content = xmalloc (size);
+ while (1)
+ {
+ wgint nread;
+ if (fm->length > size / 2)
+ {
+ /* #### I'm not sure whether the whole exponential-growth
+ thing makes sense with kernel read. On Linux at least,
+ read() refuses to read more than 4K from a file at a
+ single chunk anyway. But other Unixes might optimize it
+ better, and it doesn't *hurt* anything, so I'm leaving
+ it. */
+
+ /* Normally, we grow SIZE exponentially to make the number
+ of calls to read() and realloc() logarithmic in relation
+ to file size. However, read() can read an amount of data
+ smaller than requested, and it would be unreasonable to
+ double SIZE every time *something* was read. Therefore,
+ we double SIZE only when the length exceeds half of the
+ entire allocated size. */
+ size <<= 1;
+ fm->content = xrealloc (fm->content, size);
+ }
+ nread = read (fd, fm->content + fm->length, size - fm->length);
+ if (nread > 0)
+ /* Successful read. */
+ fm->length += nread;
+ else if (nread < 0)
+ /* Error. */
+ goto lose;
+ else
+ /* EOF */
+ break;
+ }
+ if (!inhibit_close)
+ close (fd);
+ if (size > fm->length && fm->length != 0)
+ /* Due to exponential growth of fm->content, the allocated region
+ might be much larger than what is actually needed. */
+ fm->content = xrealloc (fm->content, fm->length);
+ fm->mmap_p = 0;
+ return fm;
+
+ lose:
+ if (!inhibit_close)
+ close (fd);
+ xfree (fm->content);
+ xfree (fm);
+ return NULL;
+}
+
+/* Release the resources held by FM. Specifically, this calls
+ munmap() or xfree() on fm->content, depending whether mmap or
+ malloc/read were used to read in the file. It also frees the
+ memory needed to hold the FM structure itself. */
+
+void
+wget_read_file_free (struct file_memory *fm)
+{
+#ifdef HAVE_MMAP
+ if (fm->mmap_p)
+ {
+ munmap (fm->content, fm->length);
+ }
+ else
+#endif
+ {
+ xfree (fm->content);
+ }
+ xfree (fm);
+}
+
+/* Free the pointers in a NULL-terminated vector of pointers, then
+ free the pointer itself. */
+void
+free_vec (char **vec)
+{
+ if (vec)
+ {
+ char **p = vec;
+ while (*p)
+ {
+ xfree (*p);
+ p++;
+ }
+ xfree (vec);
+ }
+}
+
+/* Append vector V2 to vector V1. The function frees V2 and
+ reallocates V1 (thus you may not use the contents of neither
+ pointer after the call). If V1 is NULL, V2 is returned. */
+char **
+merge_vecs (char **v1, char **v2)
+{
+ int i, j;
+
+ if (!v1)
+ return v2;
+ if (!v2)
+ return v1;
+ if (!*v2)
+ {
+ /* To avoid j == 0 */
+ xfree (v2);
+ return v1;
+ }
+ /* Count v1. */
+ for (i = 0; v1[i]; i++)
+ ;
+ /* Count v2. */
+ for (j = 0; v2[j]; j++)
+ ;
+ /* Reallocate v1. */
+ v1 = xrealloc (v1, (i + j + 1) * sizeof (char *));
+ memcpy (v1 + i, v2, (j + 1) * sizeof (char *));
+ xfree (v2);
+ return v1;
+}
+
+/* Append a freshly allocated copy of STR to VEC. If VEC is NULL, it
+ is allocated as needed. Return the new value of the vector. */
+
+char **
+vec_append (char **vec, const char *str)
+{
+ int cnt; /* count of vector elements, including
+ the one we're about to append */
+ if (vec != NULL)
+ {
+ for (cnt = 0; vec[cnt]; cnt++)
+ ;
+ ++cnt;
+ }
+ else
+ cnt = 1;
+ /* Reallocate the array to fit the new element and the NULL. */
+ vec = xrealloc (vec, (cnt + 1) * sizeof (char *));
+ /* Append a copy of STR to the vector. */
+ vec[cnt - 1] = xstrdup (str);
+ vec[cnt] = NULL;
+ return vec;
+}
+
+/* Sometimes it's useful to create "sets" of strings, i.e. special
+ hash tables where you want to store strings as keys and merely
+ query for their existence. Here is a set of utility routines that
+ makes that transparent. */
+
+void
+string_set_add (struct hash_table *ht, const char *s)
+{
+ /* First check whether the set element already exists. If it does,
+ do nothing so that we don't have to free() the old element and
+ then strdup() a new one. */
+ if (hash_table_contains (ht, s))
+ return;
+
+ /* We use "1" as value. It provides us a useful and clear arbitrary
+ value, and it consumes no memory -- the pointers to the same
+ string "1" will be shared by all the key-value pairs in all `set'
+ hash tables. */
+ hash_table_put (ht, xstrdup (s), "1");
+}
+
+/* Synonym for hash_table_contains... */
+
+int
+string_set_contains (struct hash_table *ht, const char *s)
+{
+ return hash_table_contains (ht, s);
+}
+
+/* Convert the specified string set to array. ARRAY should be large
+ enough to hold hash_table_count(ht) char pointers. */
+
+void string_set_to_array (struct hash_table *ht, char **array)
+{
+ hash_table_iterator iter;
+ for (hash_table_iterate (ht, &iter); hash_table_iter_next (&iter); )
+ *array++ = iter.key;
+}
+
+/* Free the string set. This frees both the storage allocated for
+ keys and the actual hash table. (hash_table_destroy would only
+ destroy the hash table.) */
+
+void
+string_set_free (struct hash_table *ht)
+{
+ hash_table_iterator iter;
+ for (hash_table_iterate (ht, &iter); hash_table_iter_next (&iter); )
+ xfree (iter.key);
+ hash_table_destroy (ht);
+}
+
+/* Utility function: simply call xfree() on all keys and values of HT. */
+
+void
+free_keys_and_values (struct hash_table *ht)
+{
+ hash_table_iterator iter;
+ for (hash_table_iterate (ht, &iter); hash_table_iter_next (&iter); )
+ {
+ xfree (iter.key);
+ xfree (iter.value);
+ }
+}
+
+/* Get digit grouping data for thousand separors by calling
+ localeconv(). The data includes separator string and grouping info
+ and is cached after the first call to the function.
+
+ In locales that don't set a thousand separator (such as the "C"
+ locale), this forces it to be ",". We are now only showing
+ thousand separators in one place, so this shouldn't be a problem in
+ practice. */
+
+static void
+get_grouping_data (const char **sep, const char **grouping)
+{
+ static const char *cached_sep;
+ static const char *cached_grouping;
+ static bool initialized;
+ if (!initialized)
+ {
+ /* Get the grouping info from the locale. */
+ struct lconv *lconv = localeconv ();
+ cached_sep = lconv->thousands_sep;
+ cached_grouping = lconv->grouping;
+#if ! USE_NLS_PROGRESS_BAR
+ /* We can't count column widths, so ensure that the separator
+ * is single-byte only (let check below determine what byte). */
+ if (strlen(cached_sep) > 1)
+ cached_sep = "";
+#endif
+ if (!*cached_sep)
+ {
+ /* Many locales (such as "C" or "hr_HR") don't specify
+ grouping, which we still want to use it for legibility.
+ In those locales set the sep char to ',', unless that
+ character is used for decimal point, in which case set it
+ to ".". */
+ if (*lconv->decimal_point != ',')
+ cached_sep = ",";
+ else
+ cached_sep = ".";
+ cached_grouping = "\x03";
+ }
+ initialized = true;
+ }
+ *sep = cached_sep;
+ *grouping = cached_grouping;
+}
+
+/* Return a printed representation of N with thousand separators.
+ This should respect locale settings, with the exception of the "C"
+ locale which mandates no separator, but we use one anyway.
+
+ Unfortunately, we cannot use %'d (in fact it would be %'j) to get
+ the separators because it's too non-portable, and it's hard to test
+ for this feature at configure time. Besides, it wouldn't display
+ separators in the "C" locale, still used by many Unix users. */
+
+const char *
+with_thousand_seps (wgint n)
+{
+ static char outbuf[48];
+ char *p = outbuf + sizeof outbuf;
+
+ /* Info received from locale */
+ const char *grouping, *sep;
+ int seplen;
+
+ /* State information */
+ int i = 0, groupsize;
+ const char *atgroup;
+
+ bool negative = n < 0;
+
+ /* Initialize grouping data. */
+ get_grouping_data (&sep, &grouping);
+ seplen = strlen (sep);
+ atgroup = grouping;
+ groupsize = *atgroup++;
+
+ /* This would overflow on WGINT_MIN, but printing negative numbers
+ is not an important goal of this fuinction. */
+ if (negative)
+ n = -n;
+
+ /* Write the number into the buffer, backwards, inserting the
+ separators as necessary. */
+ *--p = '\0';
+ while (1)
+ {
+ *--p = n % 10 + '0';
+ n /= 10;
+ if (n == 0)
+ break;
+ /* Prepend SEP to every groupsize'd digit and get new groupsize. */
+ if (++i == groupsize)
+ {
+ if (seplen == 1)
+ *--p = *sep;
+ else
+ memcpy (p -= seplen, sep, seplen);
+ i = 0;
+ if (*atgroup)
+ groupsize = *atgroup++;
+ }
+ }
+ if (negative)
+ *--p = '-';
+
+ return p;
+}
+
+/* N, a byte quantity, is converted to a human-readable abberviated
+ form a la sizes printed by `ls -lh'. The result is written to a
+ static buffer, a pointer to which is returned.
+
+ Unlike `with_thousand_seps', this approximates to the nearest unit.
+ Quoting GNU libit: "Most people visually process strings of 3-4
+ digits effectively, but longer strings of digits are more prone to
+ misinterpretation. Hence, converting to an abbreviated form
+ usually improves readability."
+
+ This intentionally uses kilobyte (KB), megabyte (MB), etc. in their
+ original computer-related meaning of "powers of 1024". We don't
+ use the "*bibyte" names invented in 1998, and seldom used in
+ practice. Wikipedia's entry on "binary prefix" discusses this in
+ some detail. */
+
+char *
+human_readable (wgint n, const int acc, const int decimals)
+{
+ /* These suffixes are compatible with those of GNU `ls -lh'. */
+ static char powers[] =
+ {
+ 'K', /* kilobyte, 2^10 bytes */
+ 'M', /* megabyte, 2^20 bytes */
+ 'G', /* gigabyte, 2^30 bytes */
+ 'T', /* terabyte, 2^40 bytes */
+ 'P', /* petabyte, 2^50 bytes */
+ 'E', /* exabyte, 2^60 bytes */
+ };
+ static char buf[8];
+ size_t i;
+
+ /* If the quantity is smaller than 1K, just print it. */
+ if (n < 1024)
+ {
+ snprintf (buf, sizeof (buf), "%d", (int) n);
+ return buf;
+ }
+
+ /* Loop over powers, dividing N with 1024 in each iteration. This
+ works unchanged for all sizes of wgint, while still avoiding
+ non-portable `long double' arithmetic. */
+ for (i = 0; i < countof (powers); i++)
+ {
+ /* At each iteration N is greater than the *subsequent* power.
+ That way N/1024.0 produces a decimal number in the units of
+ *this* power. */
+ if ((n / 1024) < 1024 || i == countof (powers) - 1)
+ {
+ double val = n / 1024.0;
+ /* Print values smaller than the accuracy level (acc) with (decimal)
+ * decimal digits, and others without any decimals. */
+ snprintf (buf, sizeof (buf), "%.*f%c",
+ val < acc ? decimals : 0, val, powers[i]);
+ return buf;
+ }
+ n /= 1024;
+ }
+ return NULL; /* unreached */
+}
+
+/* Count the digits in the provided number. Used to allocate space
+ when printing numbers. */
+
+int
+numdigit (wgint number)
+{
+ int cnt = 1;
+ if (number < 0)
+ ++cnt; /* accommodate '-' */
+ while ((number /= 10) != 0)
+ ++cnt;
+ return cnt;
+}
+
+#define PR(mask) *p++ = n / (mask) + '0'
+
+/* DIGITS_<D> is used to print a D-digit number and should be called
+ with mask==10^(D-1). It prints n/mask (the first digit), reducing
+ n to n%mask (the remaining digits), and calling DIGITS_<D-1>.
+ Recursively this continues until DIGITS_1 is invoked. */
+
+#define DIGITS_1(mask) PR (mask)
+#define DIGITS_2(mask) PR (mask), n %= (mask), DIGITS_1 ((mask) / 10)
+#define DIGITS_3(mask) PR (mask), n %= (mask), DIGITS_2 ((mask) / 10)
+#define DIGITS_4(mask) PR (mask), n %= (mask), DIGITS_3 ((mask) / 10)
+#define DIGITS_5(mask) PR (mask), n %= (mask), DIGITS_4 ((mask) / 10)
+#define DIGITS_6(mask) PR (mask), n %= (mask), DIGITS_5 ((mask) / 10)
+#define DIGITS_7(mask) PR (mask), n %= (mask), DIGITS_6 ((mask) / 10)
+#define DIGITS_8(mask) PR (mask), n %= (mask), DIGITS_7 ((mask) / 10)
+#define DIGITS_9(mask) PR (mask), n %= (mask), DIGITS_8 ((mask) / 10)
+#define DIGITS_10(mask) PR (mask), n %= (mask), DIGITS_9 ((mask) / 10)
+
+/* DIGITS_<11-20> are only used on machines with 64-bit wgints. */
+
+#define DIGITS_11(mask) PR (mask), n %= (mask), DIGITS_10 ((mask) / 10)
+#define DIGITS_12(mask) PR (mask), n %= (mask), DIGITS_11 ((mask) / 10)
+#define DIGITS_13(mask) PR (mask), n %= (mask), DIGITS_12 ((mask) / 10)
+#define DIGITS_14(mask) PR (mask), n %= (mask), DIGITS_13 ((mask) / 10)
+#define DIGITS_15(mask) PR (mask), n %= (mask), DIGITS_14 ((mask) / 10)
+#define DIGITS_16(mask) PR (mask), n %= (mask), DIGITS_15 ((mask) / 10)
+#define DIGITS_17(mask) PR (mask), n %= (mask), DIGITS_16 ((mask) / 10)
+#define DIGITS_18(mask) PR (mask), n %= (mask), DIGITS_17 ((mask) / 10)
+#define DIGITS_19(mask) PR (mask), n %= (mask), DIGITS_18 ((mask) / 10)
+
+/* Shorthand for casting to wgint. */
+#define W wgint
+
+/* Print NUMBER to BUFFER in base 10. This is equivalent to
+ `sprintf(buffer, "%lld", (long long) number)', only typically much
+ faster and portable to machines without long long.
+
+ The speedup may make a difference in programs that frequently
+ convert numbers to strings. Some implementations of sprintf,
+ particularly the one in some versions of GNU libc, have been known
+ to be quite slow when converting integers to strings.
+
+ Return the pointer to the location where the terminating zero was
+ printed. (Equivalent to calling buffer+strlen(buffer) after the
+ function is done.)
+
+ BUFFER should be large enough to accept as many bytes as you expect
+ the number to take up. On machines with 64-bit wgints the maximum
+ needed size is 24 bytes. That includes the digits needed for the
+ largest 64-bit number, the `-' sign in case it's negative, and the
+ terminating '\0'. */
+
+char *
+number_to_string (char *buffer, wgint number)
+{
+ char *p = buffer;
+ wgint n = number;
+
+ int last_digit_char = 0;
+
+ if (n < 0)
+ {
+ if (n < -WGINT_MAX)
+ {
+ /* n = -n would overflow because -n would evaluate to a
+ wgint value larger than WGINT_MAX. Need to make n
+ smaller and handle the last digit separately. */
+ int last_digit = n % 10;
+ /* The sign of n%10 is implementation-defined. */
+ if (last_digit < 0)
+ last_digit_char = '0' - last_digit;
+ else
+ last_digit_char = '0' + last_digit;
+ /* After n is made smaller, -n will not overflow. */
+ n /= 10;
+ }
+
+ *p++ = '-';
+ n = -n;
+ }
+
+ /* Use the DIGITS_ macro appropriate for N's number of digits. That
+ way printing any N is fully open-coded without a loop or jump.
+ (Also see description of DIGITS_*.) */
+
+ if (n < 10) DIGITS_1 (1);
+ else if (n < 100) DIGITS_2 (10);
+ else if (n < 1000) DIGITS_3 (100);
+ else if (n < 10000) DIGITS_4 (1000);
+ else if (n < 100000) DIGITS_5 (10000);
+ else if (n < 1000000) DIGITS_6 (100000);
+ else if (n < 10000000) DIGITS_7 (1000000);
+ else if (n < 100000000) DIGITS_8 (10000000);
+ else if (n < 1000000000) DIGITS_9 (100000000);
+ else if (n < 10*(W)1000000000) DIGITS_10 (1000000000);
+ else if (n < 100*(W)1000000000) DIGITS_11 (10*(W)1000000000);
+ else if (n < 1000*(W)1000000000) DIGITS_12 (100*(W)1000000000);
+ else if (n < 10000*(W)1000000000) DIGITS_13 (1000*(W)1000000000);
+ else if (n < 100000*(W)1000000000) DIGITS_14 (10000*(W)1000000000);
+ else if (n < 1000000*(W)1000000000) DIGITS_15 (100000*(W)1000000000);
+ else if (n < 10000000*(W)1000000000) DIGITS_16 (1000000*(W)1000000000);
+ else if (n < 100000000*(W)1000000000) DIGITS_17 (10000000*(W)1000000000);
+ else if (n < 1000000000*(W)1000000000) DIGITS_18 (100000000*(W)1000000000);
+ else DIGITS_19 (1000000000*(W)1000000000);
+
+ if (last_digit_char)
+ *p++ = last_digit_char;
+
+ *p = '\0';
+
+ return p;
+}
+
+#undef PR
+#undef W
+#undef SPRINTF_WGINT
+#undef DIGITS_1
+#undef DIGITS_2
+#undef DIGITS_3
+#undef DIGITS_4
+#undef DIGITS_5
+#undef DIGITS_6
+#undef DIGITS_7
+#undef DIGITS_8
+#undef DIGITS_9
+#undef DIGITS_10
+#undef DIGITS_11
+#undef DIGITS_12
+#undef DIGITS_13
+#undef DIGITS_14
+#undef DIGITS_15
+#undef DIGITS_16
+#undef DIGITS_17
+#undef DIGITS_18
+#undef DIGITS_19
+
+#define RING_SIZE 3
+
+/* Print NUMBER to a statically allocated string and return a pointer
+ to the printed representation.
+
+ This function is intended to be used in conjunction with printf.
+ It is hard to portably print wgint values:
+ a) you cannot use printf("%ld", number) because wgint can be long
+ long on 32-bit machines with LFS.
+ b) you cannot use printf("%lld", number) because NUMBER could be
+ long on 32-bit machines without LFS, or on 64-bit machines,
+ which do not require LFS. Also, Windows doesn't support %lld.
+ c) you cannot use printf("%j", (int_max_t) number) because not all
+ versions of printf support "%j", the most notable being the one
+ on Windows.
+ d) you cannot #define WGINT_FMT to the appropriate format and use
+ printf(WGINT_FMT, number) because that would break translations
+ for user-visible messages, such as printf("Downloaded: %d
+ bytes\n", number).
+
+ What you should use instead is printf("%s", number_to_static_string
+ (number)).
+
+ CAVEAT: since the function returns pointers to static data, you
+ must be careful to copy its result before calling it again.
+ However, to make it more useful with printf, the function maintains
+ an internal ring of static buffers to return. That way things like
+ printf("%s %s", number_to_static_string (num1),
+ number_to_static_string (num2)) work as expected. Three buffers
+ are currently used, which means that "%s %s %s" will work, but "%s
+ %s %s %s" won't. If you need to print more than three wgints,
+ bump the RING_SIZE (or rethink your message.) */
+
+char *
+number_to_static_string (wgint number)
+{
+ static char ring[RING_SIZE][24];
+ static int ringpos;
+ char *buf = ring[ringpos];
+ number_to_string (buf, number);
+ ringpos = (ringpos + 1) % RING_SIZE;
+ return buf;
+}
+
+/* Converts the byte to bits format if --report-bps option is enabled
+ */
+wgint
+convert_to_bits (wgint num)
+{
+ if (opt.report_bps)
+ return num * 8;
+ return num;
+}
+
+
+/* Determine the width of the terminal we're running on. If that's
+ not possible, return 0. */
+
+int
+determine_screen_width (void)
+{
+ /* If there's a way to get the terminal size using POSIX
+ tcgetattr(), somebody please tell me. */
+#ifdef TIOCGWINSZ
+ int fd;
+ struct winsize wsz;
+
+ if (opt.lfilename != NULL && opt.show_progress != 1)
+ return 0;
+
+ fd = fileno (stderr);
+ if (ioctl (fd, TIOCGWINSZ, &wsz) < 0)
+ return 0; /* most likely ENOTTY */
+
+ return wsz.ws_col;
+#elif defined(WINDOWS)
+ CONSOLE_SCREEN_BUFFER_INFO csbi;
+ if (!GetConsoleScreenBufferInfo (GetStdHandle (STD_ERROR_HANDLE), &csbi))
+ return 0;
+ return csbi.dwSize.X;
+#else /* neither TIOCGWINSZ nor WINDOWS */
+ return 0;
+#endif /* neither TIOCGWINSZ nor WINDOWS */
+}
+
+/* Whether the rnd system (either rand or [dl]rand48) has been
+ seeded. */
+static int rnd_seeded;
+
+/* Return a random number between 0 and MAX-1, inclusive.
+
+ If the system does not support lrand48 and MAX is greater than the
+ value of RAND_MAX+1 on the system, the returned value will be in
+ the range [0, RAND_MAX]. This may be fixed in a future release.
+ The random number generator is seeded automatically the first time
+ it is called.
+
+ This uses lrand48 where available, rand elsewhere. DO NOT use it
+ for cryptography. It is only meant to be used in situations where
+ quality of the random numbers returned doesn't really matter. */
+
+int
+random_number (int max)
+{
+#ifdef HAVE_RANDOM
+ if (!rnd_seeded)
+ {
+ srandom ((long) time (NULL) ^ (long) getpid ());
+ rnd_seeded = 1;
+ }
+ return random () % max;
+#elif defined HAVE_DRAND48
+ if (!rnd_seeded)
+ {
+ srand48 ((long) time (NULL) ^ (long) getpid ());
+ rnd_seeded = 1;
+ }
+ return lrand48 () % max;
+#else /* not HAVE_DRAND48 */
+
+ double bounded;
+ int rnd;
+ if (!rnd_seeded)
+ {
+ srand ((unsigned) time (NULL) ^ (unsigned) getpid ());
+ rnd_seeded = 1;
+ }
+ rnd = rand ();
+
+ /* Like rand() % max, but uses the high-order bits for better
+ randomness on architectures where rand() is implemented using a
+ simple congruential generator. */
+
+ bounded = (double) max * rnd / (RAND_MAX + 1.0);
+ return (int) bounded;
+
+#endif /* not HAVE_DRAND48 */
+}
+
+/* Return a random uniformly distributed floating point number in the
+ [0, 1) range. Uses drand48 where available, and a really lame
+ kludge elsewhere. */
+
+double
+random_float (void)
+{
+#ifdef HAVE_RANDOM
+ return ((double) random_number (RAND_MAX)) / RAND_MAX;
+#elif defined HAVE_DRAND48
+ if (!rnd_seeded)
+ {
+ srand48 ((long) time (NULL) ^ (long) getpid ());
+ rnd_seeded = 1;
+ }
+ return drand48 ();
+#else /* not HAVE_DRAND48 */
+ return ( random_number (10000) / 10000.0
+ + random_number (10000) / (10000.0 * 10000.0)
+ + random_number (10000) / (10000.0 * 10000.0 * 10000.0)
+ + random_number (10000) / (10000.0 * 10000.0 * 10000.0 * 10000.0));
+#endif /* not HAVE_DRAND48 */
+}
+
+/* Implementation of run_with_timeout, a generic timeout-forcing
+ routine for systems with Unix-like signal handling. */
+
+#ifdef USE_SIGNAL_TIMEOUT
+# ifdef HAVE_SIGSETJMP
+# define SETJMP(env) sigsetjmp (env, 1)
+
+static sigjmp_buf run_with_timeout_env;
+
+_Noreturn static void
+abort_run_with_timeout (int sig _GL_UNUSED)
+{
+ assert (sig == SIGALRM);
+ siglongjmp (run_with_timeout_env, -1);
+}
+# else /* not HAVE_SIGSETJMP */
+# define SETJMP(env) setjmp (env)
+
+static jmp_buf run_with_timeout_env;
+
+static void _Noreturn
+abort_run_with_timeout (int sig _GL_UNUSED)
+{
+ assert (sig == SIGALRM);
+ /* We don't have siglongjmp to preserve the set of blocked signals;
+ if we longjumped out of the handler at this point, SIGALRM would
+ remain blocked. We must unblock it manually. */
+ sigset_t set;
+ sigemptyset (&set);
+ sigaddset (&set, SIGALRM);
+ sigprocmask (SIG_BLOCK, &set, NULL);
+
+ /* Now it's safe to longjump. */
+ longjmp (run_with_timeout_env, -1);
+}
+# endif /* not HAVE_SIGSETJMP */
+
+/* Arrange for SIGALRM to be delivered in TIMEOUT seconds. This uses
+ setitimer where available, alarm otherwise.
+
+ TIMEOUT should be non-zero. If the timeout value is so small that
+ it would be rounded to zero, it is rounded to the least legal value
+ instead (1us for setitimer, 1s for alarm). That ensures that
+ SIGALRM will be delivered in all cases. */
+
+static void
+alarm_set (double timeout)
+{
+#ifdef ITIMER_REAL
+ /* Use the modern itimer interface. */
+ struct itimerval itv;
+ xzero (itv);
+ itv.it_value.tv_sec = (long) timeout;
+ itv.it_value.tv_usec = 1000000 * (timeout - (long)timeout);
+ if (itv.it_value.tv_sec == 0 && itv.it_value.tv_usec == 0)
+ /* Ensure that we wait for at least the minimum interval.
+ Specifying zero would mean "wait forever". */
+ itv.it_value.tv_usec = 1;
+ setitimer (ITIMER_REAL, &itv, NULL);
+#else /* not ITIMER_REAL */
+ /* Use the old alarm() interface. */
+ int secs = (int) timeout;
+ if (secs == 0)
+ /* Round TIMEOUTs smaller than 1 to 1, not to zero. This is
+ because alarm(0) means "never deliver the alarm", i.e. "wait
+ forever", which is not what someone who specifies a 0.5s
+ timeout would expect. */
+ secs = 1;
+ alarm (secs);
+#endif /* not ITIMER_REAL */
+}
+
+/* Cancel the alarm set with alarm_set. */
+
+static void
+alarm_cancel (void)
+{
+#ifdef ITIMER_REAL
+ struct itimerval disable;
+ xzero (disable);
+ setitimer (ITIMER_REAL, &disable, NULL);
+#else /* not ITIMER_REAL */
+ alarm (0);
+#endif /* not ITIMER_REAL */
+}
+
+/* Call FUN(ARG), but don't allow it to run for more than TIMEOUT
+ seconds. Returns true if the function was interrupted with a
+ timeout, false otherwise.
+
+ This works by setting up SIGALRM to be delivered in TIMEOUT seconds
+ using setitimer() or alarm(). The timeout is enforced by
+ longjumping out of the SIGALRM handler. This has several
+ advantages compared to the traditional approach of relying on
+ signals causing system calls to exit with EINTR:
+
+ * The callback function is *forcibly* interrupted after the
+ timeout expires, (almost) regardless of what it was doing and
+ whether it was in a syscall. For example, a calculation that
+ takes a long time is interrupted as reliably as an IO
+ operation.
+
+ * It works with both SYSV and BSD signals because it doesn't
+ depend on the default setting of SA_RESTART.
+
+ * It doesn't require special handler setup beyond a simple call
+ to signal(). (It does use sigsetjmp/siglongjmp, but they're
+ optional.)
+
+ The only downside is that, if FUN allocates internal resources that
+ are normally freed prior to exit from the functions, they will be
+ lost in case of timeout. */
+
+bool
+run_with_timeout (double timeout, void (*fun) (void *), void *arg)
+{
+ int saved_errno;
+
+ if (timeout == 0)
+ {
+ fun (arg);
+ return false;
+ }
+
+ if (SETJMP (run_with_timeout_env) != 0)
+ {
+ /* Longjumped out of FUN with a timeout. */
+ signal (SIGALRM, SIG_DFL);
+ return true;
+ }
+ else
+ {
+ signal (SIGALRM, abort_run_with_timeout);
+ }
+ alarm_set (timeout);
+ fun (arg);
+
+ /* Preserve errno in case alarm() or signal() modifies it. */
+ saved_errno = errno;
+ alarm_cancel ();
+ signal (SIGALRM, SIG_DFL);
+ errno = saved_errno;
+
+ return false;
+}
+
+#else /* not USE_SIGNAL_TIMEOUT */
+
+#ifndef WINDOWS
+/* A stub version of run_with_timeout that just calls FUN(ARG). Don't
+ define it under Windows, because Windows has its own version of
+ run_with_timeout that uses threads. */
+
+bool
+run_with_timeout (double timeout, void (*fun) (void *), void *arg)
+{
+ fun (arg);
+ return false;
+}
+#endif /* not WINDOWS */
+#endif /* not USE_SIGNAL_TIMEOUT */
+
+#ifndef WINDOWS
+
+/* Sleep the specified amount of seconds. On machines without
+ nanosleep(), this may sleep shorter if interrupted by signals. */
+
+void
+xsleep (double seconds)
+{
+#ifdef HAVE_NANOSLEEP
+ /* nanosleep is the preferred interface because it offers high
+ accuracy and, more importantly, because it allows us to reliably
+ restart receiving a signal such as SIGWINCH. (There was an
+ actual Debian bug report about --limit-rate malfunctioning while
+ the terminal was being resized.) */
+ struct timespec sleep, remaining;
+ sleep.tv_sec = (long) seconds;
+ sleep.tv_nsec = 1000000000 * (seconds - (long) seconds);
+ while (nanosleep (&sleep, &remaining) < 0 && errno == EINTR)
+ /* If nanosleep has been interrupted by a signal, adjust the
+ sleeping period and return to sleep. */
+ sleep = remaining;
+#elif defined(HAVE_USLEEP)
+ /* If usleep is available, use it in preference to select. */
+ if (seconds >= 1)
+ {
+ /* On some systems, usleep cannot handle values larger than
+ 1,000,000. If the period is larger than that, use sleep
+ first, then add usleep for subsecond accuracy. */
+ sleep (seconds);
+ seconds -= (long) seconds;
+ }
+ usleep (seconds * 1000000);
+#else /* fall back select */
+ /* Note that, although Windows supports select, it can't be used to
+ implement sleeping because Winsock's select doesn't implement
+ timeout when it is passed NULL pointers for all fd sets. (But it
+ does under Cygwin, which implements Unix-compatible select.) */
+ struct timeval sleep;
+ sleep.tv_sec = (long) seconds;
+ sleep.tv_usec = 1000000 * (seconds - (long) seconds);
+ select (0, NULL, NULL, NULL, &sleep);
+ /* If select returns -1 and errno is EINTR, it means we were
+ interrupted by a signal. But without knowing how long we've
+ actually slept, we can't return to sleep. Using gettimeofday to
+ track sleeps is slow and unreliable due to clock skew. */
+#endif
+}
+
+#endif /* not WINDOWS */
+
+/* Encode the octets in DATA of length LENGTH to base64 format,
+ storing the result to DEST. The output will be zero-terminated,
+ and must point to a writable buffer of at least
+ 1+BASE64_LENGTH(length) bytes. The function returns the length of
+ the resulting base64 data, not counting the terminating zero.
+
+ This implementation does not emit newlines after 76 characters of
+ base64 data. */
+
+size_t
+wget_base64_encode (const void *data, size_t length, char *dest)
+{
+ /* Conversion table. */
+ static const char tbl[64] = {
+ 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
+ 'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f',
+ 'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v',
+ 'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/'
+ };
+ /* Access bytes in DATA as unsigned char, otherwise the shifts below
+ don't work for data with MSB set. */
+ const unsigned char *s = data;
+ /* Theoretical ANSI violation when length < 3. */
+ const unsigned char *end = (const unsigned char *) data + length - 2;
+ char *p = dest;
+
+ /* Transform the 3x8 bits to 4x6 bits, as required by base64. */
+ for (; s < end; s += 3)
+ {
+ *p++ = tbl[s[0] >> 2];
+ *p++ = tbl[((s[0] & 3) << 4) + (s[1] >> 4)];
+ *p++ = tbl[((s[1] & 0xf) << 2) + (s[2] >> 6)];
+ *p++ = tbl[s[2] & 0x3f];
+ }
+
+ /* Pad the result if necessary... */
+ switch (length % 3)
+ {
+ case 1:
+ *p++ = tbl[s[0] >> 2];
+ *p++ = tbl[(s[0] & 3) << 4];
+ *p++ = '=';
+ *p++ = '=';
+ break;
+ case 2:
+ *p++ = tbl[s[0] >> 2];
+ *p++ = tbl[((s[0] & 3) << 4) + (s[1] >> 4)];
+ *p++ = tbl[((s[1] & 0xf) << 2)];
+ *p++ = '=';
+ break;
+ }
+ /* ...and zero-terminate it. */
+ *p = '\0';
+
+ return p - dest;
+}
+
+/* Store in C the next non-whitespace character from the string, or \0
+ when end of string is reached. */
+#define NEXT_CHAR(c, p) do { \
+ c = (unsigned char) *p++; \
+} while (c_isspace (c))
+
+#define IS_ASCII(c) (((c) & 0x80) == 0)
+
+/* Decode data from BASE64 (a null-terminated string) into memory
+ pointed to by DEST. DEST is assumed to be large enough to
+ accommodate the decoded data, which is guaranteed to be no more than
+ 3/4*strlen(base64).
+
+ Since DEST is assumed to contain binary data, it is not
+ NUL-terminated. The function returns the length of the data
+ written to "TO". -1 is returned in case of error caused by malformed
+ base64 input.
+
+ This function originates from Free Recode. */
+
+ssize_t
+wget_base64_decode (const char *base64, void *dest, size_t size)
+{
+ /* Table of base64 values for first 128 characters. Note that this
+ assumes ASCII (but so does Wget in other places). */
+ static const signed char base64_char_to_value[128] =
+ {
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0- 9 */
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 10- 19 */
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 20- 29 */
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 30- 39 */
+ -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, /* 40- 49 */
+ 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, /* 50- 59 */
+ -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, /* 60- 69 */
+ 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, /* 70- 79 */
+ 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, /* 80- 89 */
+ 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, /* 90- 99 */
+ 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, /* 100-109 */
+ 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, /* 110-119 */
+ 49, 50, 51, -1, -1, -1, -1, -1 /* 120-127 */
+ };
+#define BASE64_CHAR_TO_VALUE(c) ((int) base64_char_to_value[c])
+#define IS_BASE64(c) ((IS_ASCII (c) && BASE64_CHAR_TO_VALUE (c) >= 0) || c == '=')
+
+ const char *p = base64;
+ unsigned char *q = dest;
+ ssize_t n = 0;
+
+ while (1)
+ {
+ unsigned char c;
+ unsigned long value;
+
+ /* Process first byte of a quadruplet. */
+ NEXT_CHAR (c, p);
+ if (!c)
+ break;
+ if (c == '=' || !IS_BASE64 (c))
+ return -1; /* illegal char while decoding base64 */
+ value = BASE64_CHAR_TO_VALUE (c) << 18;
+
+ /* Process second byte of a quadruplet. */
+ NEXT_CHAR (c, p);
+ if (!c)
+ return -1; /* premature EOF while decoding base64 */
+ if (c == '=' || !IS_BASE64 (c))
+ return -1; /* illegal char while decoding base64 */
+ value |= BASE64_CHAR_TO_VALUE (c) << 12;
+ if (size)
+ {
+ *q++ = value >> 16;
+ size--;
+ }
+ n++;
+
+ /* Process third byte of a quadruplet. */
+ NEXT_CHAR (c, p);
+ if (!c)
+ return -1; /* premature EOF while decoding base64 */
+ if (!IS_BASE64 (c))
+ return -1; /* illegal char while decoding base64 */
+
+ if (c == '=')
+ {
+ NEXT_CHAR (c, p);
+ if (!c)
+ return -1; /* premature EOF while decoding base64 */
+ if (c != '=')
+ return -1; /* padding `=' expected but not found */
+ continue;
+ }
+
+ value |= BASE64_CHAR_TO_VALUE (c) << 6;
+ if (size)
+ {
+ *q++ = 0xff & value >> 8;
+ size--;
+ }
+ n++;
+
+ /* Process fourth byte of a quadruplet. */
+ NEXT_CHAR (c, p);
+ if (!c)
+ return -1; /* premature EOF while decoding base64 */
+ if (c == '=')
+ continue;
+ if (!IS_BASE64 (c))
+ return -1; /* illegal char while decoding base64 */
+
+ value |= BASE64_CHAR_TO_VALUE (c);
+ if (size)
+ {
+ *q++ = 0xff & value;
+ size--;
+ }
+ n++;
+ }
+#undef IS_BASE64
+#undef BASE64_CHAR_TO_VALUE
+
+ return n;
+}
+
+#ifdef HAVE_LIBPCRE2
+/* Compiles the PCRE2 regex. */
+void *
+compile_pcre2_regex (const char *str)
+{
+ int errornumber;
+ PCRE2_SIZE erroroffset;
+ pcre2_code *regex = pcre2_compile((PCRE2_SPTR) str, PCRE2_ZERO_TERMINATED, 0, &errornumber, &erroroffset, NULL);
+ if (! regex)
+ {
+ fprintf (stderr, _("Invalid regular expression %s, PCRE2 error %d\n"),
+ quote (str), errornumber);
+ }
+ return regex;
+}
+#endif
+
+#ifdef HAVE_LIBPCRE
+/* Compiles the PCRE regex. */
+void *
+compile_pcre_regex (const char *str)
+{
+ const char *errbuf;
+ int erroffset;
+ pcre *regex = pcre_compile (str, 0, &errbuf, &erroffset, 0);
+ if (! regex)
+ {
+ fprintf (stderr, _("Invalid regular expression %s, %s\n"),
+ quote (str), errbuf);
+ }
+ return regex;
+}
+#endif
+
+/* Compiles the POSIX regex. */
+void *
+compile_posix_regex (const char *str)
+{
+ regex_t *regex = xmalloc (sizeof (regex_t));
+#ifdef TESTING
+ /* regcomp might be *very* cpu+memory intensive,
+ * see https://sourceware.org/glibc/wiki/Security%20Exceptions */
+ str = "a";
+#endif
+ int errcode = regcomp ((regex_t *) regex, str, REG_EXTENDED | REG_NOSUB);
+ if (errcode != 0)
+ {
+ size_t errbuf_size = regerror (errcode, (regex_t *) regex, NULL, 0);
+ char *errbuf = xmalloc (errbuf_size);
+ regerror (errcode, (regex_t *) regex, errbuf, errbuf_size);
+ fprintf (stderr, _("Invalid regular expression %s, %s\n"),
+ quote (str), errbuf);
+ xfree (errbuf);
+ xfree (regex);
+ return NULL;
+ }
+
+ return regex;
+}
+
+#ifdef HAVE_LIBPCRE2
+/* Matches a PCRE2 regex. */
+bool
+match_pcre2_regex (const void *regex, const char *str)
+{
+ int rc;
+ pcre2_match_data *match_data;
+
+ match_data = pcre2_match_data_create_from_pattern(regex, NULL);
+
+ if (match_data)
+ {
+ rc = pcre2_match(regex, (PCRE2_SPTR) str, strlen(str), 0, 0, match_data, NULL);
+ pcre2_match_data_free(match_data);
+ }
+ else
+ rc = PCRE2_ERROR_NOMEMORY;
+
+ if (rc < 0 && rc != PCRE2_ERROR_NOMATCH)
+ {
+ logprintf (LOG_VERBOSE, _("Error while matching %s: %d\n"),
+ quote (str), rc);
+ }
+
+ return rc >= 0;
+}
+#endif
+
+#ifdef HAVE_LIBPCRE
+#define OVECCOUNT 30
+/* Matches a PCRE regex. */
+bool
+match_pcre_regex (const void *regex, const char *str)
+{
+ size_t l = strlen (str);
+ int ovector[OVECCOUNT];
+
+ int rc = pcre_exec ((pcre *) regex, 0, str, (int) l, 0, 0, ovector, OVECCOUNT);
+ if (rc == PCRE_ERROR_NOMATCH)
+ return false;
+ else if (rc < 0)
+ {
+ logprintf (LOG_VERBOSE, _("Error while matching %s: %d\n"),
+ quote (str), rc);
+ return false;
+ }
+ else
+ return true;
+}
+#undef OVECCOUNT
+#endif
+
+/* Matches a POSIX regex. */
+bool
+match_posix_regex (const void *regex, const char *str)
+{
+ int rc = regexec ((regex_t *) regex, str, 0, NULL, 0);
+ if (rc == REG_NOMATCH)
+ return false;
+ else if (rc == 0)
+ return true;
+ else
+ {
+ size_t errbuf_size = regerror (rc, opt.acceptregex, NULL, 0);
+ char *errbuf = xmalloc (errbuf_size);
+ regerror (rc, opt.acceptregex, errbuf, errbuf_size);
+ logprintf (LOG_VERBOSE, _("Error while matching %s: %d\n"),
+ quote (str), rc);
+ xfree (errbuf);
+ return false;
+ }
+}
+
+#undef IS_ASCII
+#undef NEXT_CHAR
+
+/* Simple merge sort for use by stable_sort. Implementation courtesy
+ Zeljko Vrba with additional debugging by Nenad Barbutov. */
+
+static void
+mergesort_internal (void *base, void *temp, size_t size, size_t from, size_t to,
+ int (*cmpfun) (const void *, const void *))
+{
+#define ELT(array, pos) ((char *)(array) + (pos) * size)
+ if (from < to)
+ {
+ size_t i, j, k;
+ size_t mid = (to + from) / 2;
+ mergesort_internal (base, temp, size, from, mid, cmpfun);
+ mergesort_internal (base, temp, size, mid + 1, to, cmpfun);
+ i = from;
+ j = mid + 1;
+ for (k = from; (i <= mid) && (j <= to); k++)
+ if (cmpfun (ELT (base, i), ELT (base, j)) <= 0)
+ memcpy (ELT (temp, k), ELT (base, i++), size);
+ else
+ memcpy (ELT (temp, k), ELT (base, j++), size);
+ while (i <= mid)
+ memcpy (ELT (temp, k++), ELT (base, i++), size);
+ while (j <= to)
+ memcpy (ELT (temp, k++), ELT (base, j++), size);
+ for (k = from; k <= to; k++)
+ memcpy (ELT (base, k), ELT (temp, k), size);
+ }
+#undef ELT
+}
+
+/* Stable sort with interface exactly like standard library's qsort.
+ Uses mergesort internally. */
+
+void
+stable_sort (void *base, size_t nmemb, size_t size,
+ int (*cmpfun) (const void *, const void *))
+{
+ if (nmemb > 1 && size > 1)
+ {
+ void *temp = xmalloc (nmemb * size);
+ mergesort_internal (base, temp, size, 0, nmemb - 1, cmpfun);
+ xfree(temp);
+ }
+}
+
+/* Print a decimal number. If it is equal to or larger than ten, the
+ number is rounded. Otherwise it is printed with one significant
+ digit without trailing zeros and with no more than three fractional
+ digits total. For example, 0.1 is printed as "0.1", 0.035 is
+ printed as "0.04", 0.0091 as "0.009", and 0.0003 as simply "0".
+
+ This is useful for displaying durations because it provides
+ order-of-magnitude information without unnecessary clutter --
+ long-running downloads are shown without the fractional part, and
+ short ones still retain one significant digit. */
+
+const char *
+print_decimal (double number)
+{
+ static char buf[32];
+ double n = number >= 0 ? number : -number;
+
+ if (n >= 9.95)
+ /* Cut off at 9.95 because the below %.1f would round 9.96 to
+ "10.0" instead of "10". OTOH 9.94 will print as "9.9". */
+ snprintf (buf, sizeof buf, "%.0f", number);
+ else if (n >= 0.95)
+ snprintf (buf, sizeof buf, "%.1f", number);
+ else if (n >= 0.001)
+ snprintf (buf, sizeof buf, "%.1g", number);
+ else if (n >= 0.0005)
+ /* round [0.0005, 0.001) to 0.001 */
+ snprintf (buf, sizeof buf, "%.3f", number);
+ else
+ /* print numbers close to 0 as 0, not 0.000 */
+ strcpy (buf, "0");
+
+ return buf;
+}
+
+/* Get the maximum name length for the given path. */
+/* Return 0 if length is unknown. */
+long
+get_max_length (const char *path, int length, int name)
+{
+ long ret;
+ char *p, *d;
+
+ /* Make a copy of the path that we can modify. */
+ p = path ? strdupdelim (path, path + length) : strdup ("");
+
+ for (;;)
+ {
+ errno = 0;
+ /* For an empty path query the current directory. */
+#if HAVE_PATHCONF
+ ret = pathconf (*p ? p : ".", name);
+ if (!(ret < 0 && errno == ENOENT))
+ break;
+#else
+ ret = PATH_MAX;
+#endif
+
+ /* The path does not exist yet, but may be created. */
+ /* Already at current or root directory, give up. */
+ if (!*p || strcmp (p, "/") == 0)
+ break;
+
+ /* Remove one directory level and try again. */
+ d = strrchr (p, '/');
+ if (d == p)
+ p[1] = '\0'; /* check root directory */
+ else if (d)
+ *d = '\0'; /* remove last directory part */
+ else
+ *p = '\0'; /* check current directory */
+ }
+
+ xfree (p);
+
+ if (ret < 0)
+ {
+ /* pathconf() has a message for us. */
+ if (errno != 0)
+ perror ("pathconf");
+
+ /* If (errno == 0) then there is no max length.
+ Even on error return 0 so the caller can continue. */
+ return 0;
+ }
+
+ return ret;
+}
+
+void
+wg_hex_to_string (char *str_buffer, const char *hex_buffer, size_t hex_len)
+{
+ size_t i;
+
+ for (i = 0; i < hex_len; i++)
+ {
+ /* Each byte takes 2 characters. */
+ sprintf (str_buffer + 2 * i, "%02x", (unsigned) (hex_buffer[i] & 0xFF));
+ }
+
+ /* Null-terminate result. */
+ str_buffer[2 * i] = '\0';
+}
+
+#ifdef HAVE_SSL
+
+/*
+ * Public key pem to der conversion
+ */
+
+static bool
+wg_pubkey_pem_to_der (const char *pem, unsigned char **der, size_t *der_len)
+{
+ char *stripped_pem, *begin_pos, *end_pos;
+ size_t pem_count, stripped_pem_count = 0, pem_len;
+ ssize_t size;
+ unsigned char *base64data;
+
+ *der = NULL;
+ *der_len = 0;
+
+ /* if no pem, exit. */
+ if (!pem)
+ return false;
+
+ begin_pos = strstr (pem, "-----BEGIN PUBLIC KEY-----");
+ if (!begin_pos)
+ return false;
+
+ pem_count = begin_pos - pem;
+ /* Invalid if not at beginning AND not directly following \n */
+ if (0 != pem_count && '\n' != pem[pem_count - 1])
+ return false;
+
+ /* 26 is length of "-----BEGIN PUBLIC KEY-----" */
+ pem_count += 26;
+
+ /* Invalid if not directly following \n */
+ end_pos = strstr (pem + pem_count, "\n-----END PUBLIC KEY-----");
+ if (!end_pos)
+ return false;
+
+ pem_len = end_pos - pem;
+
+ stripped_pem = xmalloc (pem_len - pem_count + 1);
+
+ /*
+ * Here we loop through the pem array one character at a time between the
+ * correct indices, and place each character that is not '\n' or '\r'
+ * into the stripped_pem array, which should represent the raw base64 string
+ */
+ while (pem_count < pem_len) {
+ if ('\n' != pem[pem_count] && '\r' != pem[pem_count])
+ stripped_pem[stripped_pem_count++] = pem[pem_count];
+ ++pem_count;
+ }
+ /* Place the null terminator in the correct place */
+ stripped_pem[stripped_pem_count] = '\0';
+
+ base64data = xmalloc (BASE64_LENGTH(stripped_pem_count));
+
+ size = wget_base64_decode (stripped_pem, base64data, BASE64_LENGTH(stripped_pem_count));
+
+ if (size < 0) {
+ xfree (base64data); /* malformed base64 from server */
+ } else {
+ *der = base64data;
+ *der_len = (size_t) size;
+ }
+
+ xfree (stripped_pem);
+
+ return *der_len > 0;
+}
+
+/*
+ * Generic pinned public key check.
+ */
+
+bool
+wg_pin_peer_pubkey (const char *pinnedpubkey, const char *pubkey, size_t pubkeylen)
+{
+ struct file_memory *fm;
+ unsigned char *buf = NULL, *pem_ptr = NULL;
+ size_t size, pem_len;
+ bool pem_read;
+ bool result = false;
+
+ size_t pinkeylen;
+ ssize_t decoded_hash_length;
+ char *pinkeycopy, *begin_pos, *end_pos;
+ unsigned char *sha256sumdigest = NULL, *expectedsha256sumdigest = NULL;
+
+ /* if a path wasn't specified, don't pin */
+ if (!pinnedpubkey)
+ return true;
+ if (!pubkey || !pubkeylen)
+ return result;
+
+ /* only do this if pinnedpubkey starts with "sha256//", length 8 */
+ if (strncmp (pinnedpubkey, "sha256//", 8) == 0)
+ {
+ /* compute sha256sum of public key */
+ sha256sumdigest = xmalloc (SHA256_DIGEST_SIZE);
+ sha256_buffer (pubkey, pubkeylen, sha256sumdigest);
+ expectedsha256sumdigest = xmalloc (SHA256_DIGEST_SIZE);
+
+ /* it starts with sha256//, copy so we can modify it */
+ pinkeylen = strlen (pinnedpubkey) + 1;
+ pinkeycopy = xmalloc (pinkeylen);
+ memcpy (pinkeycopy, pinnedpubkey, pinkeylen);
+
+ /* point begin_pos to the copy, and start extracting keys */
+ begin_pos = pinkeycopy;
+ do
+ {
+ end_pos = strstr (begin_pos, ";sha256//");
+ /*
+ * if there is an end_pos, null terminate,
+ * otherwise it'll go to the end of the original string
+ */
+ if (end_pos)
+ end_pos[0] = '\0';
+
+ /* decode base64 pinnedpubkey, 8 is length of "sha256//" */
+ decoded_hash_length = wget_base64_decode (begin_pos + 8, expectedsha256sumdigest, SHA256_DIGEST_SIZE);
+
+ /* if valid base64, compare sha256 digests directly */
+ if (SHA256_DIGEST_SIZE == decoded_hash_length)
+ {
+ if (!memcmp (sha256sumdigest, expectedsha256sumdigest, SHA256_DIGEST_SIZE))
+ {
+ result = true;
+ break;
+ }
+ }
+ else
+ logprintf (LOG_VERBOSE, _ ("Skipping key with wrong size (%d/%d): %s\n"),
+ (int) (strlen (begin_pos + 8) * 3) / 4, SHA256_DIGEST_SIZE,
+ quote (begin_pos + 8));
+
+ /*
+ * change back the null-terminator we changed earlier,
+ * and look for next begin
+ */
+ if (end_pos)
+ {
+ end_pos[0] = ';';
+ begin_pos = strstr (end_pos, "sha256//");
+ }
+ }
+ while (end_pos && begin_pos);
+
+ xfree (sha256sumdigest);
+ xfree (expectedsha256sumdigest);
+ xfree (pinkeycopy);
+
+ return result;
+ }
+
+ /* fall back to assuming this is a file path */
+ fm = wget_read_file (pinnedpubkey);
+ if (!fm)
+ return result;
+
+ /* Check the file's size */
+ if (fm->length < 0 || fm->length > MAX_PINNED_PUBKEY_SIZE)
+ goto cleanup;
+
+ /*
+ * if the size of our certificate is bigger than the file
+ * size then it can't match
+ */
+ size = (size_t) fm->length;
+ if (pubkeylen > size)
+ goto cleanup;
+
+ /* If the sizes are the same, it can't be base64 encoded, must be der */
+ if (pubkeylen == size)
+ {
+ if (!memcmp (pubkey, fm->content, pubkeylen))
+ result = true;
+ goto cleanup;
+ }
+
+ /*
+ * Otherwise we will assume it's PEM and try to decode it
+ * after placing null terminator
+ */
+ buf = xmalloc (size + 1);
+ memcpy (buf, fm->content, size);
+ buf[size] = '\0';
+
+ pem_read = wg_pubkey_pem_to_der ((const char *) buf, &pem_ptr, &pem_len);
+ /* if it wasn't read successfully, exit */
+ if (!pem_read)
+ goto cleanup;
+
+ /*
+ * if the size of our certificate doesn't match the size of
+ * the decoded file, they can't be the same, otherwise compare
+ */
+ if (pubkeylen == pem_len && !memcmp (pubkey, pem_ptr, pubkeylen))
+ result = true;
+
+cleanup:
+ xfree (buf);
+ xfree (pem_ptr);
+ wget_read_file_free (fm);
+
+ return result;
+}
+
+#endif /* HAVE_SSL */
+
+#ifdef TESTING
+
+const char *
+test_subdir_p(void)
+{
+ static const struct {
+ const char *d1;
+ const char *d2;
+ bool result;
+ } test_array[] = {
+ { "/somedir", "/somedir", true },
+ { "/somedir", "/somedir/d2", true },
+ { "/somedir/d1", "/somedir", false },
+ };
+ unsigned i;
+
+ for (i = 0; i < countof(test_array); ++i)
+ {
+ bool res = subdir_p (test_array[i].d1, test_array[i].d2);
+
+ mu_assert ("test_subdir_p: wrong result",
+ res == test_array[i].result);
+ }
+
+ return NULL;
+}
+
+const char *
+test_dir_matches_p(void)
+{
+ static struct {
+ const char *dirlist[3];
+ const char *dir;
+ bool result;
+ } test_array[] = {
+ { { "/somedir", "/someotherdir", NULL }, "somedir", true },
+ { { "/somedir", "/someotherdir", NULL }, "anotherdir", false },
+ { { "/somedir", "/*otherdir", NULL }, "anotherdir", true },
+ { { "/somedir/d1", "/someotherdir", NULL }, "somedir/d1", true },
+ { { "*/*d1", "/someotherdir", NULL }, "somedir/d1", true },
+ { { "/somedir/d1", "/someotherdir", NULL }, "d1", false },
+ { { "!COMPLETE", NULL, NULL }, "!COMPLETE", true },
+ { { "*COMPLETE", NULL, NULL }, "!COMPLETE", true },
+ { { "*/!COMPLETE", NULL, NULL }, "foo/!COMPLETE", true },
+ { { "*COMPLETE", NULL, NULL }, "foo/!COMPLETE", false },
+ { { "*/*COMPLETE", NULL, NULL }, "foo/!COMPLETE", true },
+ { { "/dir with spaces", NULL, NULL }, "dir with spaces", true },
+ { { "/dir*with*spaces", NULL, NULL }, "dir with spaces", true },
+ { { "/Tmp/has", NULL, NULL }, "/Tmp/has space", false },
+ { { "/Tmp/has", NULL, NULL }, "/Tmp/has,comma", false },
+ };
+ unsigned i;
+
+ for (i = 0; i < countof(test_array); ++i)
+ {
+ bool res = dir_matches_p (test_array[i].dirlist, test_array[i].dir);
+
+ mu_assert ("test_dir_matches_p: wrong result",
+ res == test_array[i].result);
+ }
+
+ return NULL;
+}
+
+#endif /* TESTING */
diff --git a/src/utils.h b/src/utils.h
new file mode 100644
index 0000000..b1ab901
--- /dev/null
+++ b/src/utils.h
@@ -0,0 +1,179 @@
+/* Declarations for utils.c.
+ Copyright (C) 1996-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef UTILS_H
+#define UTILS_H
+
+#include <stdlib.h>
+#include <wget.h>
+
+/* Constant is using when we don`t know attempted size exactly */
+#define UNKNOWN_ATTEMPTED_SIZE -3
+
+#ifndef MAX_PINNED_PUBKEY_SIZE
+#define MAX_PINNED_PUBKEY_SIZE 1048576 /* 1MB */
+#endif
+
+/* Macros that interface to malloc, but know about type sizes, and
+ cast the result to the appropriate type. The casts are not
+ necessary in standard C, but Wget performs them anyway for the sake
+ of pre-standard environments and possibly C++. */
+
+#define xnew(type) (xmalloc (sizeof (type)))
+#define xnew0(type) (xcalloc (1, sizeof (type)))
+#define xnew_array(type, len) (xmalloc ((len) * sizeof (type)))
+#define xnew0_array(type, len) (xcalloc ((len), sizeof (type)))
+
+#define xfree(p) do { free ((void *) (p)); p = NULL; } while (0)
+
+struct hash_table;
+
+struct file_memory {
+ char *content;
+ long length;
+ int mmap_p;
+};
+
+#define HYPHENP(x) (*(x) == '-' && !*((x) + 1))
+
+char *time_str (time_t);
+char *datetime_str (time_t);
+
+char *xstrdup_lower (const char *);
+
+char *strdupdelim (const char *, const char *);
+char **sepstring (const char *);
+bool subdir_p (const char *, const char *);
+bool fork_to_background (void);
+
+char *aprintf (const char *, ...) GCC_FORMAT_ATTR (1, 2);
+char *concat_strings (const char *, ...);
+
+typedef struct file_stat_s {
+ int access_err; /* Error in accecssing file : Not present vs permission */
+ ino_t st_ino; /* st_ino from stats() on the file before open() */
+ dev_t st_dev; /* st_dev from stats() on the file before open() */
+} file_stats_t;
+
+void touch (const char *, time_t);
+int remove_link (const char *);
+bool file_exists_p (const char *, file_stats_t *);
+bool file_non_directory_p (const char *);
+wgint file_size (const char *);
+int make_directory (const char *);
+char *unique_name_passthrough (const char *);
+char *unique_name (const char *);
+FILE *unique_create (const char *, bool, char **);
+FILE *fopen_excl (const char *, int);
+FILE *fopen_stat (const char *, const char *, file_stats_t *);
+int open_stat (const char *, int, mode_t, file_stats_t *);
+char *file_merge (const char *, const char *);
+
+int fnmatch_nocase (const char *, const char *, int);
+bool acceptable (const char *);
+bool accept_url (const char *);
+bool accdir (const char *s);
+char *suffix (const char *s);
+bool match_tail (const char *, const char *, bool);
+bool has_wildcards_p (const char *);
+
+bool has_html_suffix_p (const char *);
+
+struct file_memory *wget_read_file (const char *);
+void wget_read_file_free (struct file_memory *);
+
+void free_vec (char **);
+char **merge_vecs (char **, char **);
+char **vec_append (char **, const char *);
+
+void string_set_add (struct hash_table *, const char *);
+int string_set_contains (struct hash_table *, const char *);
+void string_set_to_array (struct hash_table *, char **);
+void string_set_free (struct hash_table *);
+void free_keys_and_values (struct hash_table *);
+
+const char *with_thousand_seps (wgint);
+
+/* human_readable must be able to accept wgint and SUM_SIZE_INT
+ arguments. */
+char *human_readable (wgint, const int, const int);
+
+
+int numdigit (wgint);
+char *number_to_string (char *, wgint);
+char *number_to_static_string (wgint);
+wgint convert_to_bits (wgint);
+
+int determine_screen_width (void);
+int random_number (int);
+double random_float (void);
+
+bool run_with_timeout (double, void (*) (void *), void *);
+void xsleep (double);
+
+/* How many bytes it will take to store LEN bytes in base64. */
+#define BASE64_LENGTH(len) (4 * (((len) + 2) / 3))
+
+size_t wget_base64_encode (const void *, size_t, char *);
+ssize_t wget_base64_decode (const char *, void *, size_t);
+
+#ifdef HAVE_LIBPCRE2
+void *compile_pcre2_regex (const char *);
+bool match_pcre2_regex (const void *, const char *);
+#endif
+
+#ifdef HAVE_LIBPCRE
+void *compile_pcre_regex (const char *);
+bool match_pcre_regex (const void *, const char *);
+#endif
+
+void *compile_posix_regex (const char *);
+bool match_posix_regex (const void *, const char *);
+
+void stable_sort (void *, size_t, size_t, int (*) (const void *, const void *));
+
+const char *print_decimal (double);
+
+long get_max_length (const char *path, int length, int name);
+
+#ifndef HAVE_STRLCPY
+size_t strlcpy (char *dst, const char *src, size_t size);
+#endif
+
+void wg_hex_to_string (char *str_buffer, const char *hex_buffer, size_t hex_len);
+
+extern unsigned char char_prop[];
+
+#ifdef HAVE_SSL
+/* Check pinned public key. */
+bool wg_pin_peer_pubkey (const char *pinnedpubkey, const char *pubkey, size_t pubkeylen);
+#endif
+
+#endif /* UTILS_H */
diff --git a/src/version.h b/src/version.h
new file mode 100644
index 0000000..49fb931
--- /dev/null
+++ b/src/version.h
@@ -0,0 +1,41 @@
+/* Extern declarations for printing version information
+ Copyright (C) 2013, 2015, 2018-2020 Free Software Foundation, Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#ifndef WGET_VERSION_H
+#define WGET_VERSION_H
+
+/* Extern declarations for strings in version.c */
+extern const char *version_string;
+extern const char *compilation_string;
+extern const char *link_string;
+
+/* Extern declaration for string in build_info.c */
+extern const char *compiled_features[];
+
+#endif /* WGET_VERSION_H */
diff --git a/src/warc.c b/src/warc.c
new file mode 100644
index 0000000..f602444
--- /dev/null
+++ b/src/warc.c
@@ -0,0 +1,1662 @@
+/* Utility functions for writing WARC files.
+ Copyright (C) 2011-2012, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at
+your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+#include "hash.h"
+#include "utils.h"
+#include "version.h"
+#include "dirname.h"
+#include "url.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <tmpdir.h>
+#include <sha1.h>
+#include <base32.h>
+#include <unistd.h>
+#ifdef HAVE_LIBZ
+#include <zlib.h>
+#endif
+
+#ifdef HAVE_LIBUUID
+#include <uuid/uuid.h>
+#elif HAVE_UUID_CREATE
+#include <uuid.h>
+#endif
+
+#include "warc.h"
+#include "exits.h"
+
+#ifdef WINDOWS
+/* we need this on Windows to have O_TEMPORARY defined */
+# include <fcntl.h>
+# include <rpc.h>
+#endif
+
+#ifndef O_TEMPORARY
+#define O_TEMPORARY 0
+#endif
+
+#include "warc.h"
+#include "exits.h"
+
+
+/* The log file (a temporary file that contains a copy
+ of the wget log). */
+static FILE *warc_log_fp;
+
+/* The manifest file (a temporary file that contains the
+ warcinfo uuid of every file in this crawl). */
+static FILE *warc_manifest_fp;
+
+/* The current WARC file (or NULL, if WARC is disabled). */
+static FILE *warc_current_file;
+
+#ifdef HAVE_LIBZ
+/* The gzip stream for the current WARC file
+ (or NULL, if WARC or gzip is disabled). */
+static gzFile warc_current_gzfile;
+
+/* The offset of the current gzip record in the WARC file. */
+static off_t warc_current_gzfile_offset;
+
+/* The uncompressed size (so far) of the current record. */
+static off_t warc_current_gzfile_uncompressed_size;
+# endif
+
+/* This is true until a warc_write_* method fails. */
+static bool warc_write_ok;
+
+/* The current CDX file (or NULL, if CDX is disabled). */
+static FILE *warc_current_cdx_file;
+
+/* The record id of the warcinfo record of the current WARC file. */
+static char warc_current_warcinfo_uuid_str[48];
+
+/* The file name of the current WARC file. */
+static char *warc_current_filename;
+
+/* The serial number of the current WARC file. This number is
+ incremented each time a new file is opened and is used in the
+ WARC file's filename. */
+static int warc_current_file_number;
+
+/* The table of CDX records, if deduplication is enabled. */
+static struct hash_table * warc_cdx_dedup_table;
+
+static bool warc_start_new_file (bool meta);
+
+
+struct warc_cdx_record
+{
+ char *url;
+ char *uuid;
+ char digest[SHA1_DIGEST_SIZE];
+};
+
+static unsigned long
+warc_hash_sha1_digest (const void *key)
+{
+ /* We just use some of the first bytes of the digest. */
+ unsigned long v = 0;
+ memcpy (&v, key, sizeof (unsigned long));
+ return v;
+}
+
+static int
+warc_cmp_sha1_digest (const void *digest1, const void *digest2)
+{
+ return !memcmp (digest1, digest2, SHA1_DIGEST_SIZE);
+}
+
+
+
+/* Writes SIZE bytes from BUFFER to the current WARC file,
+ through gzwrite if compression is enabled.
+ Returns the number of uncompressed bytes written. */
+static size_t
+warc_write_buffer (const char *buffer, size_t size)
+{
+#ifdef HAVE_LIBZ
+ if (warc_current_gzfile)
+ {
+ warc_current_gzfile_uncompressed_size += size;
+ return gzwrite (warc_current_gzfile, buffer, size);
+ }
+ else
+#endif
+ return fwrite (buffer, 1, size, warc_current_file);
+}
+
+/* Writes STR to the current WARC file.
+ Returns false and set warc_write_ok to false if there
+ is an error. */
+static bool
+warc_write_string (const char *str)
+{
+ size_t n;
+
+ if (!warc_write_ok)
+ return false;
+
+ n = strlen (str);
+ if (n != warc_write_buffer (str, n))
+ warc_write_ok = false;
+
+ return warc_write_ok;
+}
+
+
+#define EXTRA_GZIP_HEADER_SIZE 14
+#define GZIP_STATIC_HEADER_SIZE 10
+#define FLG_FEXTRA 0x04
+#define OFF_FLG 3
+
+/* Starts a new WARC record. Writes the version header.
+ If opt.warc_maxsize is set and the current file is becoming
+ too large, this will open a new WARC file.
+
+ If compression is enabled, this will start a new
+ gzip stream in the current WARC file.
+
+ Returns false and set warc_write_ok to false if there
+ is an error. */
+static bool
+warc_write_start_record (void)
+{
+ if (!warc_write_ok)
+ return false;
+
+ fflush (warc_current_file);
+ if (opt.warc_maxsize > 0 && ftello (warc_current_file) >= opt.warc_maxsize)
+ warc_start_new_file (false);
+
+#ifdef HAVE_LIBZ
+ /* Start a GZIP stream, if required. */
+ if (opt.warc_compression_enabled)
+ {
+ int dup_fd;
+ /* Record the starting offset of the new record. */
+ warc_current_gzfile_offset = ftello (warc_current_file);
+
+ /* Reserve space for the extra GZIP header field.
+ In warc_write_end_record we will fill this space
+ with information about the uncompressed and
+ compressed size of the record. */
+ if (fseek (warc_current_file, EXTRA_GZIP_HEADER_SIZE, SEEK_CUR) < 0)
+ {
+ logprintf (LOG_NOTQUIET, _("Error setting WARC file position.\n"));
+ warc_write_ok = false;
+ return false;
+ }
+
+ if (fflush (warc_current_file) != 0)
+ {
+ logprintf (LOG_NOTQUIET, _("Error flushing WARC file to disk.\n"));
+ warc_write_ok = false;
+ return false;
+ }
+
+ /* Start a new GZIP stream. */
+ dup_fd = dup (fileno (warc_current_file));
+ if (dup_fd < 0)
+ {
+ logprintf (LOG_NOTQUIET,
+_("Error duplicating WARC file file descriptor.\n"));
+ warc_write_ok = false;
+ return false;
+ }
+
+ warc_current_gzfile = gzdopen (dup_fd, "wb9");
+ warc_current_gzfile_uncompressed_size = 0;
+
+ if (warc_current_gzfile == NULL)
+ {
+ logprintf (LOG_NOTQUIET,
+_("Error opening GZIP stream to WARC file.\n"));
+ close (dup_fd);
+ warc_write_ok = false;
+ return false;
+ }
+ }
+#endif
+
+ warc_write_string ("WARC/1.0\r\n");
+ return warc_write_ok;
+}
+
+/* Writes a WARC header to the current WARC record.
+ This method may be run after warc_write_start_record and
+ before warc_write_block_from_file. */
+static bool
+warc_write_header (const char *name, const char *value)
+{
+ if (value)
+ {
+ warc_write_string (name);
+ warc_write_string (": ");
+ warc_write_string (value);
+ warc_write_string ("\r\n");
+ }
+ return warc_write_ok;
+}
+
+/* Writes a WARC header with a URI as value to the current WARC record.
+ This method may be run after warc_write_start_record and
+ before warc_write_block_from_file. */
+static bool
+warc_write_header_uri (const char *name, const char *value)
+{
+ if (value)
+ {
+ warc_write_string (name);
+ warc_write_string (": <");
+ warc_write_string (value);
+ warc_write_string (">\r\n");
+ }
+ return warc_write_ok;
+}
+
+/* Copies the contents of DATA_IN to the WARC record.
+ Adds a Content-Length header to the WARC record.
+ Run this method after warc_write_header,
+ then run warc_write_end_record. */
+static bool
+warc_write_block_from_file (FILE *data_in)
+{
+ /* Add the Content-Length header. */
+ char content_length[MAX_INT_TO_STRING_LEN(off_t)];
+ char buffer[BUFSIZ];
+ size_t s;
+
+ fseeko (data_in, 0L, SEEK_END);
+ number_to_string (content_length, ftello (data_in));
+ warc_write_header ("Content-Length", content_length);
+
+ /* End of the WARC header section. */
+ warc_write_string ("\r\n");
+
+ if (fseeko (data_in, 0L, SEEK_SET) != 0)
+ warc_write_ok = false;
+
+ /* Copy the data in the file to the WARC record. */
+ while (warc_write_ok && (s = fread (buffer, 1, BUFSIZ, data_in)) > 0)
+ {
+ if (warc_write_buffer (buffer, s) < s)
+ warc_write_ok = false;
+ }
+
+ return warc_write_ok;
+}
+
+/* Run this method to close the current WARC record.
+
+ If compression is enabled, this method closes the
+ current GZIP stream and fills the extra GZIP header
+ with the uncompressed and compressed length of the
+ record. */
+static bool
+warc_write_end_record (void)
+{
+ if (warc_write_buffer ("\r\n\r\n", 4) != 4)
+ {
+ warc_write_ok = false;
+ return false;
+ }
+
+#ifdef HAVE_LIBZ
+ /* We start a new gzip stream for each record. */
+ if (warc_write_ok && warc_current_gzfile)
+ {
+ char extra_header[EXTRA_GZIP_HEADER_SIZE];
+ char static_header[GZIP_STATIC_HEADER_SIZE];
+ off_t current_offset, uncompressed_size, compressed_size;
+ size_t result;
+
+ if (gzclose (warc_current_gzfile) != Z_OK)
+ {
+ warc_write_ok = false;
+ return false;
+ }
+
+ fflush (warc_current_file);
+ fseeko (warc_current_file, 0, SEEK_END);
+
+ /* The WARC standard suggests that we add 'skip length' data in the
+ extra header field of the GZIP stream.
+
+ In warc_write_start_record we reserved space for this extra header.
+ This extra space starts at warc_current_gzfile_offset and fills
+ EXTRA_GZIP_HEADER_SIZE bytes. The static GZIP header starts at
+ warc_current_gzfile_offset + EXTRA_GZIP_HEADER_SIZE.
+
+ We need to do three things:
+ 1. Move the static GZIP header to warc_current_gzfile_offset;
+ 2. Set the FEXTRA flag in the GZIP header;
+ 3. Write the extra GZIP header after the static header, that is,
+ starting at warc_current_gzfile_offset + GZIP_STATIC_HEADER_SIZE.
+ */
+
+ /* Calculate the uncompressed and compressed sizes. */
+ current_offset = ftello (warc_current_file);
+ uncompressed_size = current_offset - warc_current_gzfile_offset;
+ compressed_size = warc_current_gzfile_uncompressed_size;
+
+ /* Go back to the static GZIP header. */
+ result = fseeko (warc_current_file, warc_current_gzfile_offset
+ + EXTRA_GZIP_HEADER_SIZE, SEEK_SET);
+ if (result != 0)
+ {
+ warc_write_ok = false;
+ return false;
+ }
+
+ /* Read the header. */
+ result = fread (static_header, 1, GZIP_STATIC_HEADER_SIZE,
+ warc_current_file);
+ if (result != GZIP_STATIC_HEADER_SIZE)
+ {
+ warc_write_ok = false;
+ return false;
+ }
+
+ /* Set the FEXTRA flag in the flags byte of the header. */
+ static_header[OFF_FLG] = static_header[OFF_FLG] | FLG_FEXTRA;
+
+ /* Write the header back to the file, but starting at
+ warc_current_gzfile_offset. */
+ fseeko (warc_current_file, warc_current_gzfile_offset, SEEK_SET);
+ fwrite (static_header, 1, GZIP_STATIC_HEADER_SIZE, warc_current_file);
+
+ /* Prepare the extra GZIP header. */
+ /* XLEN, the length of the extra header fields. */
+ extra_header[0] = ((EXTRA_GZIP_HEADER_SIZE - 2) & 255);
+ extra_header[1] = ((EXTRA_GZIP_HEADER_SIZE - 2) >> 8) & 255;
+ /* The extra header field identifier for the WARC skip length. */
+ extra_header[2] = 's';
+ extra_header[3] = 'l';
+ /* The size of the field value (8 bytes). */
+ extra_header[4] = (8 & 255);
+ extra_header[5] = ((8 >> 8) & 255);
+ /* The size of the uncompressed record. */
+ extra_header[6] = (uncompressed_size & 255);
+ extra_header[7] = (uncompressed_size >> 8) & 255;
+ extra_header[8] = (uncompressed_size >> 16) & 255;
+ extra_header[9] = (uncompressed_size >> 24) & 255;
+ /* The size of the compressed record. */
+ extra_header[10] = (compressed_size & 255);
+ extra_header[11] = (compressed_size >> 8) & 255;
+ extra_header[12] = (compressed_size >> 16) & 255;
+ extra_header[13] = (compressed_size >> 24) & 255;
+
+ /* Write the extra header after the static header. */
+ fseeko (warc_current_file, warc_current_gzfile_offset
+ + GZIP_STATIC_HEADER_SIZE, SEEK_SET);
+ fwrite (extra_header, 1, EXTRA_GZIP_HEADER_SIZE, warc_current_file);
+
+ /* Done, move back to the end of the file. */
+ fflush (warc_current_file);
+ fseeko (warc_current_file, 0, SEEK_END);
+ }
+#endif /* HAVE_LIBZ */
+
+ return warc_write_ok;
+}
+
+
+/* Writes the WARC-Date header for the given timestamp to
+ the current WARC record.
+ If timestamp is NULL, the current time will be used. */
+static bool
+warc_write_date_header (const char *timestamp)
+{
+ char current_timestamp[21];
+
+ return warc_write_header ("WARC-Date", timestamp ? timestamp :
+ warc_timestamp (current_timestamp, sizeof(current_timestamp)));
+}
+
+/* Writes the WARC-IP-Address header for the given IP to
+ the current WARC record. If IP is NULL, no header will
+ be written. */
+static bool
+warc_write_ip_header (const ip_address *ip)
+{
+ if (ip != NULL)
+ return warc_write_header ("WARC-IP-Address", print_address (ip));
+ else
+ return warc_write_ok;
+}
+
+
+/* warc_sha1_stream_with_payload is a modified copy of sha1_stream
+ from gnulib/sha1.c. This version calculates two digests in one go.
+
+ Compute SHA1 message digests for bytes read from STREAM. The
+ digest of the complete file will be written into the 16 bytes
+ beginning at RES_BLOCK.
+
+ If payload_offset >= 0, a second digest will be calculated of the
+ portion of the file starting at payload_offset and continuing to
+ the end of the file. The digest number will be written into the
+ 16 bytes beginning ad RES_PAYLOAD. */
+static int
+warc_sha1_stream_with_payload (FILE *stream, void *res_block, void *res_payload,
+ off_t payload_offset)
+{
+#define BLOCKSIZE 32768
+
+ struct sha1_ctx ctx_block;
+ struct sha1_ctx ctx_payload;
+ off_t pos;
+ off_t sum;
+
+ char *buffer = xmalloc (BLOCKSIZE + 72);
+
+ /* Initialize the computation context. */
+ sha1_init_ctx (&ctx_block);
+ if (payload_offset >= 0)
+ sha1_init_ctx (&ctx_payload);
+
+ pos = 0;
+
+ /* Iterate over full file contents. */
+ while (1)
+ {
+ /* We read the file in blocks of BLOCKSIZE bytes. One call of the
+ computation function processes the whole buffer so that with the
+ next round of the loop another block can be read. */
+ off_t n;
+ sum = 0;
+
+ /* Read block. Take care for partial reads. */
+ while (1)
+ {
+ n = fread (buffer + sum, 1, BLOCKSIZE - sum, stream);
+
+ sum += n;
+ pos += n;
+
+ if (sum == BLOCKSIZE)
+ break;
+
+ if (n == 0)
+ {
+ /* Check for the error flag IF N == 0, so that we don't
+ exit the loop after a partial read due to e.g., EAGAIN
+ or EWOULDBLOCK. */
+ if (ferror (stream))
+ {
+ xfree (buffer);
+ return 1;
+ }
+ goto process_partial_block;
+ }
+
+ /* We've read at least one byte, so ignore errors. But always
+ check for EOF, since feof may be true even though N > 0.
+ Otherwise, we could end up calling fread after EOF. */
+ if (feof (stream))
+ goto process_partial_block;
+ }
+
+ /* Process buffer with BLOCKSIZE bytes. Note that
+ BLOCKSIZE % 64 == 0
+ */
+ sha1_process_block (buffer, BLOCKSIZE, &ctx_block);
+ if (payload_offset >= 0 && payload_offset < pos)
+ {
+ /* At least part of the buffer contains data from payload. */
+ off_t start_of_payload = payload_offset - (pos - BLOCKSIZE);
+ if (start_of_payload <= 0)
+ /* All bytes in the buffer belong to the payload. */
+ start_of_payload = 0;
+
+ /* Process the payload part of the buffer.
+ Note: we can't use sha1_process_block here even if we
+ process the complete buffer. Because the payload doesn't
+ have to start with a full block, there may still be some
+ bytes left from the previous buffer. Therefore, we need
+ to continue with sha1_process_bytes. */
+ sha1_process_bytes (buffer + start_of_payload,
+ BLOCKSIZE - start_of_payload, &ctx_payload);
+ }
+ }
+
+ process_partial_block:;
+
+ /* Process any remaining bytes. */
+ if (sum > 0)
+ {
+ sha1_process_bytes (buffer, sum, &ctx_block);
+ if (payload_offset >= 0 && payload_offset < pos)
+ {
+ /* At least part of the buffer contains data from payload. */
+ off_t start_of_payload = payload_offset - (pos - sum);
+ if (start_of_payload <= 0)
+ /* All bytes in the buffer belong to the payload. */
+ start_of_payload = 0;
+
+ /* Process the payload part of the buffer. */
+ sha1_process_bytes (buffer + start_of_payload,
+ sum - start_of_payload, &ctx_payload);
+ }
+ }
+
+ /* Construct result in desired memory. */
+ sha1_finish_ctx (&ctx_block, res_block);
+ if (payload_offset >= 0)
+ sha1_finish_ctx (&ctx_payload, res_payload);
+ xfree (buffer);
+ return 0;
+
+#undef BLOCKSIZE
+}
+
+/* Converts the SHA1 digest to a base32-encoded string.
+ "sha1:DIGEST\0" (Allocates a new string for the response.) */
+static char *
+warc_base32_sha1_digest (const char *sha1_digest, char *sha1_base32, size_t sha1_base32_size)
+{
+ if (sha1_base32_size >= BASE32_LENGTH(SHA1_DIGEST_SIZE) + 5 + 1)
+ {
+ memcpy (sha1_base32, "sha1:", 5);
+ base32_encode (sha1_digest, SHA1_DIGEST_SIZE, sha1_base32 + 5,
+ sha1_base32_size - 5);
+ }
+ else
+ *sha1_base32 = 0;
+
+ return sha1_base32;
+}
+
+
+/* Sets the digest headers of the record.
+ This method will calculate the block digest and, if payload_offset >= 0,
+ will also calculate the payload digest of the payload starting at the
+ provided offset. */
+static void
+warc_write_digest_headers (FILE *file, long payload_offset)
+{
+ if (opt.warc_digests_enabled)
+ {
+ /* Calculate the block and payload digests. */
+ char sha1_res_block[SHA1_DIGEST_SIZE];
+ char sha1_res_payload[SHA1_DIGEST_SIZE];
+
+ rewind (file);
+ if (warc_sha1_stream_with_payload (file, sha1_res_block,
+ sha1_res_payload, payload_offset) == 0)
+ {
+ char digest[BASE32_LENGTH(SHA1_DIGEST_SIZE) + 1 + 5];
+
+ warc_write_header ("WARC-Block-Digest",
+ warc_base32_sha1_digest (sha1_res_block, digest, sizeof(digest)));
+
+ if (payload_offset >= 0)
+ warc_write_header ("WARC-Payload-Digest",
+ warc_base32_sha1_digest (sha1_res_payload, digest, sizeof(digest)));
+ }
+ }
+}
+
+
+/* Fills timestamp with the current time and date.
+ The UTC time is formatted following ISO 8601, as required
+ for use in the WARC-Date header.
+ The timestamp will be 21 characters long. */
+char *
+warc_timestamp (char *timestamp, size_t timestamp_size)
+{
+ time_t rawtime = time (NULL);
+ struct tm * timeinfo = gmtime (&rawtime);
+
+ if (strftime (timestamp, timestamp_size, "%Y-%m-%dT%H:%M:%SZ", timeinfo) == 0 && timestamp_size > 0)
+ *timestamp = 0;
+
+ return timestamp;
+}
+
+/* Fills urn_str with a UUID in the format required
+ for the WARC-Record-Id header.
+ The string will be 47 characters long. */
+#if HAVE_LIBUUID
+void
+warc_uuid_str (char *urn_str, size_t urn_size)
+{
+ char uuid_str[37];
+ uuid_t record_id;
+
+ uuid_generate (record_id);
+ uuid_unparse (record_id, uuid_str);
+
+ snprintf (urn_str, urn_size, "<urn:uuid:%s>", uuid_str);
+}
+#elif HAVE_UUID_CREATE
+void
+warc_uuid_str (char *urn_str, size_t urn_size)
+{
+ char *uuid_str;
+ uuid_t record_id;
+
+ uuid_create (&record_id, NULL);
+ uuid_to_string (&record_id, &uuid_str, NULL);
+
+ snprintf (urn_str, urn_size, "<urn:uuid:%s>", uuid_str);
+ xfree (uuid_str);
+}
+#else
+# ifdef WINDOWS
+
+typedef RPC_STATUS (RPC_ENTRY * UuidCreate_proc) (UUID *);
+typedef RPC_STATUS (RPC_ENTRY * UuidToString_proc) (UUID *, unsigned char **);
+typedef RPC_STATUS (RPC_ENTRY * RpcStringFree_proc) (unsigned char **);
+
+static int
+windows_uuid_str (char *urn_str, size_t urn_size)
+{
+ static UuidCreate_proc pfn_UuidCreate = NULL;
+ static UuidToString_proc pfn_UuidToString = NULL;
+ static RpcStringFree_proc pfn_RpcStringFree = NULL;
+ static int rpc_uuid_avail = -1;
+
+ /* Rpcrt4.dll is not available on older versions of Windows, so we
+ need to test its availability at run time. */
+ if (rpc_uuid_avail == -1)
+ {
+ HMODULE hm_rpcrt4 = LoadLibrary ("Rpcrt4.dll");
+
+ if (hm_rpcrt4)
+ {
+ pfn_UuidCreate =
+ (UuidCreate_proc) GetProcAddress (hm_rpcrt4, "UuidCreate");
+ pfn_UuidToString =
+ (UuidToString_proc) GetProcAddress (hm_rpcrt4, "UuidToStringA");
+ pfn_RpcStringFree =
+ (RpcStringFree_proc) GetProcAddress (hm_rpcrt4, "RpcStringFreeA");
+ if (pfn_UuidCreate && pfn_UuidToString && pfn_RpcStringFree)
+ rpc_uuid_avail = 1;
+ else
+ rpc_uuid_avail = 0;
+ }
+ else
+ rpc_uuid_avail = 0;
+ }
+
+ if (rpc_uuid_avail)
+ {
+ BYTE *uuid_str;
+ UUID uuid;
+
+ if (pfn_UuidCreate (&uuid) == RPC_S_OK)
+ {
+ if (pfn_UuidToString (&uuid, &uuid_str) == RPC_S_OK)
+ {
+ snprintf (urn_str, urn_size, "<urn:uuid:%s>", uuid_str);
+ pfn_RpcStringFree (&uuid_str);
+ return 1;
+ }
+ }
+ }
+ return 0;
+}
+#endif
+/* Fills urn_str with a UUID based on random numbers in the format
+ required for the WARC-Record-Id header.
+ (See RFC 4122, UUID version 4.)
+
+ Note: this is a fallback method, it is much better to use the
+ methods provided by libuuid.
+
+ The string will be 47 characters long. */
+void
+warc_uuid_str (char *urn_str, size_t urn_size)
+{
+ /* RFC 4122, a version 4 UUID with only random numbers */
+
+ unsigned char uuid_data[16];
+ int i;
+
+#ifdef WINDOWS
+ /* If the native method fails (expected on older Windows versions),
+ use the fallback below. */
+ if (windows_uuid_str (urn_str, urn_size))
+ return;
+#endif
+
+ for (i=0; i<16; i++)
+ uuid_data[i] = random_number (255);
+
+ /* Set the four most significant bits (bits 12 through 15) of the
+ * time_hi_and_version field to the 4-bit version number */
+ uuid_data[6] = (uuid_data[6] & 0x0F) | 0x40;
+
+ /* Set the two most significant bits (bits 6 and 7) of the
+ * clock_seq_hi_and_reserved to zero and one, respectively. */
+ uuid_data[8] = (uuid_data[8] & 0xBF) | 0x80;
+
+ snprintf (urn_str, urn_size,
+ "<urn:uuid:%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x>",
+ uuid_data[0], uuid_data[1], uuid_data[2], uuid_data[3], uuid_data[4],
+ uuid_data[5], uuid_data[6], uuid_data[7], uuid_data[8], uuid_data[9],
+ uuid_data[10], uuid_data[11], uuid_data[12], uuid_data[13], uuid_data[14],
+ uuid_data[15]);
+}
+#endif
+
+/* Write a warcinfo record to the current file.
+ Updates warc_current_warcinfo_uuid_str. */
+static bool
+warc_write_warcinfo_record (const char *filename)
+{
+ FILE *warc_tmp;
+ char timestamp[22];
+ char *filename_basename;
+
+ /* Write warc-info record as the first record of the file. */
+ /* We add the record id of this info record to the other records in the
+ file. */
+ warc_uuid_str (warc_current_warcinfo_uuid_str, sizeof (warc_current_warcinfo_uuid_str));
+
+ warc_timestamp (timestamp, sizeof(timestamp));
+
+ filename_basename = base_name (filename);
+
+ warc_write_start_record ();
+ warc_write_header ("WARC-Type", "warcinfo");
+ warc_write_header ("Content-Type", "application/warc-fields");
+ warc_write_header ("WARC-Date", timestamp);
+ warc_write_header ("WARC-Record-ID", warc_current_warcinfo_uuid_str);
+ warc_write_header ("WARC-Filename", filename_basename);
+
+ xfree (filename_basename);
+
+ /* Create content. */
+ warc_tmp = warc_tempfile ();
+ if (warc_tmp == NULL)
+ {
+ return false;
+ }
+
+ fprintf (warc_tmp, "software: Wget/%s (%s)\r\n", version_string, OS_TYPE);
+ fprintf (warc_tmp, "format: WARC File Format 1.0\r\n");
+ fprintf (warc_tmp,
+"conformsTo: http://bibnum.bnf.fr/WARC/WARC_ISO_28500_version1_latestdraft.pdf\r\n");
+ fprintf (warc_tmp, "robots: %s\r\n", (opt.use_robots ? "classic" : "off"));
+ fprintf (warc_tmp, "wget-arguments: %s\r\n", program_argstring);
+ /* Add the user headers, if any. */
+ if (opt.warc_user_headers)
+ {
+ int i;
+ for (i = 0; opt.warc_user_headers[i]; i++)
+ fprintf (warc_tmp, "%s\r\n", opt.warc_user_headers[i]);
+ }
+ fprintf(warc_tmp, "\r\n");
+
+ warc_write_digest_headers (warc_tmp, -1);
+ warc_write_block_from_file (warc_tmp);
+ warc_write_end_record ();
+
+ if (! warc_write_ok)
+ logprintf (LOG_NOTQUIET, _("Error writing warcinfo record to WARC file.\n"));
+
+ fclose (warc_tmp);
+ return warc_write_ok;
+}
+
+/* Opens a new WARC file.
+ If META is true, generates a filename ending with 'meta.warc.gz'.
+
+ This method will:
+ 1. close the current WARC file (if there is one);
+ 2. increment warc_current_file_number;
+ 3. open a new WARC file;
+ 4. write the initial warcinfo record.
+
+ Returns true on success, false otherwise.
+ */
+static bool
+warc_start_new_file (bool meta)
+{
+#ifdef __VMS
+# define WARC_GZ "warc-gz"
+#else /* def __VMS */
+# define WARC_GZ "warc.gz"
+#endif /* def __VMS [else] */
+
+#ifdef HAVE_LIBZ
+ const char *extension = (opt.warc_compression_enabled ? WARC_GZ : "warc");
+#else
+ const char *extension = "warc";
+#endif
+
+ int base_filename_length;
+ char *new_filename;
+
+ if (opt.warc_filename == NULL)
+ return false;
+
+ if (warc_current_file != NULL)
+ fclose (warc_current_file);
+
+ *warc_current_warcinfo_uuid_str = 0;
+ xfree (warc_current_filename);
+
+ warc_current_file_number++;
+
+ base_filename_length = strlen (opt.warc_filename);
+ /* filename format: base + "-" + 5 digit serial number + ".warc.gz" */
+ new_filename = xmalloc (base_filename_length + 1 + 5 + 8 + 1);
+
+ warc_current_filename = new_filename;
+
+ /* If max size is enabled, we add a serial number to the file names. */
+ if (meta)
+ sprintf (new_filename, "%s-meta.%s", opt.warc_filename, extension);
+ else if (opt.warc_maxsize > 0)
+ {
+ sprintf (new_filename, "%s-%05d.%s", opt.warc_filename,
+ warc_current_file_number, extension);
+ }
+ else
+ sprintf (new_filename, "%s.%s", opt.warc_filename, extension);
+
+ logprintf (LOG_VERBOSE, _("Opening WARC file %s.\n\n"), quote (new_filename));
+
+ /* Open the WARC file. */
+ warc_current_file = fopen (new_filename, "wb+");
+ if (warc_current_file == NULL)
+ {
+ logprintf (LOG_NOTQUIET, _("Error opening WARC file %s.\n"),
+ quote (new_filename));
+ return false;
+ }
+
+ if (! warc_write_warcinfo_record (new_filename))
+ return false;
+
+ /* Add warcinfo uuid to manifest. */
+ if (warc_manifest_fp)
+ fprintf (warc_manifest_fp, "%s\n", warc_current_warcinfo_uuid_str);
+
+ return true;
+}
+
+/* Opens the CDX file for output. */
+static bool
+warc_start_cdx_file (void)
+{
+ char *cdx_filename = aprintf("%s.cdx", opt.warc_filename);
+ warc_current_cdx_file = fopen (cdx_filename, "a+");
+ free(cdx_filename);
+
+ if (warc_current_cdx_file == NULL)
+ return false;
+
+ /* Print the CDX header.
+ *
+ * a - original url
+ * b - date
+ * m - mime type
+ * s - response code
+ * k - new style checksum
+ * r - redirect
+ * M - meta tags
+ * V - compressed arc file offset
+ * g - file name
+ * u - record-id
+ */
+ fprintf (warc_current_cdx_file, " CDX a b a m s k r M V g u\n");
+ fflush (warc_current_cdx_file);
+
+ return true;
+}
+
+#define CDX_FIELDSEP " \t\r\n"
+
+/* Parse the CDX header and find the field numbers of the original url,
+ checksum and record ID fields. */
+static bool
+warc_parse_cdx_header (char *lineptr, int *field_num_original_url,
+ int *field_num_checksum, int *field_num_record_id)
+{
+ char *token;
+ char *save_ptr;
+
+ *field_num_original_url = -1;
+ *field_num_checksum = -1;
+ *field_num_record_id = -1;
+
+ token = strtok_r (lineptr, CDX_FIELDSEP, &save_ptr);
+
+ if (token != NULL && strcmp (token, "CDX") == 0)
+ {
+ int field_num = 0;
+ while (token != NULL)
+ {
+ token = strtok_r (NULL, CDX_FIELDSEP, &save_ptr);
+ if (token != NULL)
+ {
+ switch (token[0])
+ {
+ case 'a':
+ *field_num_original_url = field_num;
+ break;
+ case 'k':
+ *field_num_checksum = field_num;
+ break;
+ case 'u':
+ *field_num_record_id = field_num;
+ break;
+ }
+ }
+ field_num++;
+ }
+ }
+
+ return *field_num_original_url != -1
+ && *field_num_checksum != -1
+ && *field_num_record_id != -1;
+}
+
+/* Parse the CDX record and add it to the warc_cdx_dedup_table hash table. */
+static void
+warc_process_cdx_line (char *lineptr, int field_num_original_url,
+ int field_num_checksum, int field_num_record_id)
+{
+ char *original_url = NULL;
+ char *checksum = NULL;
+ char *record_id = NULL;
+ char *token;
+ char *save_ptr;
+ int field_num = 0;
+
+ /* Read this line to get the fields we need. */
+ token = strtok_r (lineptr, CDX_FIELDSEP, &save_ptr);
+ while (token != NULL)
+ {
+ char **val;
+ if (field_num == field_num_original_url)
+ val = &original_url;
+ else if (field_num == field_num_checksum)
+ val = &checksum;
+ else if (field_num == field_num_record_id)
+ val = &record_id;
+ else
+ val = NULL;
+
+ if (val != NULL)
+ *val = strdup (token);
+
+ token = strtok_r (NULL, CDX_FIELDSEP, &save_ptr);
+ field_num++;
+ }
+
+ if (original_url != NULL && checksum != NULL && record_id != NULL)
+ {
+ /* For some extra efficiency, we decode the base32 encoded
+ checksum value. This should produce exactly SHA1_DIGEST_SIZE
+ bytes. */
+ size_t checksum_l;
+ char * checksum_v;
+ base32_decode_alloc (checksum, strlen (checksum), &checksum_v,
+ &checksum_l);
+ xfree (checksum);
+
+ if (checksum_v != NULL && checksum_l == SHA1_DIGEST_SIZE)
+ {
+ /* This is a valid line with a valid checksum. */
+ struct warc_cdx_record *rec;
+ rec = xmalloc (sizeof (struct warc_cdx_record));
+ rec->url = original_url;
+ rec->uuid = record_id;
+ memcpy (rec->digest, checksum_v, SHA1_DIGEST_SIZE);
+ hash_table_put (warc_cdx_dedup_table, rec->digest, rec);
+ xfree (checksum_v);
+ }
+ else
+ {
+ xfree (original_url);
+ xfree (checksum_v);
+ xfree (record_id);
+ }
+ }
+ else
+ {
+ xfree(checksum);
+ xfree(original_url);
+ xfree(record_id);
+ }
+}
+
+/* Loads the CDX file from opt.warc_cdx_dedup_filename and fills
+ the warc_cdx_dedup_table. */
+static bool
+warc_load_cdx_dedup_file (void)
+{
+ FILE *f;
+ char *lineptr = NULL;
+ size_t n = 0;
+ ssize_t line_length;
+ int field_num_original_url = -1;
+ int field_num_checksum = -1;
+ int field_num_record_id = -1;
+
+ f = fopen (opt.warc_cdx_dedup_filename, "r");
+ if (f == NULL)
+ return false;
+
+ /* The first line should contain the CDX header.
+ Format: " CDX x x x x x"
+ where x are field type indicators. For our purposes, we only
+ need 'a' (the original url), 'k' (the SHA1 checksum) and
+ 'u' (the WARC record id). */
+ line_length = getline (&lineptr, &n, f);
+ if (line_length != -1)
+ warc_parse_cdx_header (lineptr, &field_num_original_url,
+ &field_num_checksum, &field_num_record_id);
+
+ /* If the file contains all three fields, read the complete file. */
+ if (field_num_original_url == -1
+ || field_num_checksum == -1
+ || field_num_record_id == -1)
+ {
+ if (field_num_original_url == -1)
+ logprintf (LOG_NOTQUIET,
+_("CDX file does not list original urls. (Missing column 'a'.)\n"));
+ if (field_num_checksum == -1)
+ logprintf (LOG_NOTQUIET,
+_("CDX file does not list checksums. (Missing column 'k'.)\n"));
+ if (field_num_record_id == -1)
+ logprintf (LOG_NOTQUIET,
+_("CDX file does not list record ids. (Missing column 'u'.)\n"));
+ }
+ else
+ {
+ int nrecords;
+
+ /* Initialize the table. */
+ warc_cdx_dedup_table = hash_table_new (1000, warc_hash_sha1_digest,
+ warc_cmp_sha1_digest);
+
+ do
+ {
+ line_length = getline (&lineptr, &n, f);
+ if (line_length != -1)
+ {
+ warc_process_cdx_line (lineptr, field_num_original_url,
+ field_num_checksum, field_num_record_id);
+ }
+
+ }
+ while (line_length != -1);
+
+ /* Print results. */
+ nrecords = hash_table_count (warc_cdx_dedup_table);
+ logprintf (LOG_VERBOSE, ngettext ("Loaded %d record from CDX.\n\n",
+ "Loaded %d records from CDX.\n\n",
+ nrecords),
+ nrecords);
+ }
+
+ xfree (lineptr);
+ fclose (f);
+
+ return true;
+}
+#undef CDX_FIELDSEP
+
+/* Returns the existing duplicate CDX record for the given url and payload
+ digest. Returns NULL if the url is not found or if the payload digest
+ does not match, or if CDX deduplication is disabled. */
+static struct warc_cdx_record *
+warc_find_duplicate_cdx_record (const char *url, char *sha1_digest_payload)
+{
+ struct warc_cdx_record *rec_existing;
+
+ if (warc_cdx_dedup_table == NULL)
+ return NULL;
+
+ rec_existing = hash_table_get (warc_cdx_dedup_table, sha1_digest_payload);
+
+ if (rec_existing && strcmp (rec_existing->url, url) == 0)
+ return rec_existing;
+ else
+ return NULL;
+}
+
+/* Initializes the WARC writer (if opt.warc_filename is set).
+ This should be called before any WARC record is written. */
+void
+warc_init (void)
+{
+ warc_write_ok = true;
+
+ if (opt.warc_filename != NULL)
+ {
+ if (opt.warc_cdx_dedup_filename != NULL)
+ {
+ if (! warc_load_cdx_dedup_file ())
+ {
+ logprintf (LOG_NOTQUIET,
+ _("Could not read CDX file %s for deduplication.\n"),
+ quote (opt.warc_cdx_dedup_filename));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ }
+
+ warc_manifest_fp = warc_tempfile ();
+ if (warc_manifest_fp == NULL)
+ {
+ logprintf (LOG_NOTQUIET,
+ _("Could not open temporary WARC manifest file.\n"));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+
+ if (opt.warc_keep_log)
+ {
+ warc_log_fp = warc_tempfile ();
+ if (warc_log_fp == NULL)
+ {
+ logprintf (LOG_NOTQUIET,
+ _("Could not open temporary WARC log file.\n"));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ log_set_warc_log_fp (warc_log_fp);
+ }
+
+ warc_current_file_number = -1;
+ if (! warc_start_new_file (false))
+ {
+ logprintf (LOG_NOTQUIET, _("Could not open WARC file.\n"));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+
+ if (opt.warc_cdx_enabled)
+ {
+ if (! warc_start_cdx_file ())
+ {
+ logprintf (LOG_NOTQUIET,
+ _("Could not open CDX file for output.\n"));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ }
+ }
+}
+
+/* Writes metadata (manifest, configuration, log file) to the WARC file. */
+static void
+warc_write_metadata (void)
+{
+ char manifest_uuid[48];
+ FILE *warc_tmp_fp;
+
+ /* If there are multiple WARC files, the metadata should be written to a separate file. */
+ if (opt.warc_maxsize > 0)
+ warc_start_new_file (true);
+
+ warc_uuid_str (manifest_uuid, sizeof (manifest_uuid));
+
+ fflush (warc_manifest_fp);
+ warc_write_metadata_record (manifest_uuid,
+ "metadata://gnu.org/software/wget/warc/MANIFEST.txt",
+ NULL, NULL, NULL, "text/plain",
+ warc_manifest_fp, -1);
+ /* warc_write_resource_record has closed warc_manifest_fp. */
+
+ warc_tmp_fp = warc_tempfile ();
+ if (warc_tmp_fp == NULL)
+ {
+ logprintf (LOG_NOTQUIET, _("Could not open temporary WARC file.\n"));
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ fflush (warc_tmp_fp);
+ fprintf (warc_tmp_fp, "%s\n", program_argstring);
+
+ warc_write_resource_record (NULL,
+ "metadata://gnu.org/software/wget/warc/wget_arguments.txt",
+ NULL, manifest_uuid, NULL, "text/plain",
+ warc_tmp_fp, -1);
+ /* warc_write_resource_record has closed warc_tmp_fp. */
+
+ if (warc_log_fp != NULL)
+ {
+ warc_write_resource_record (NULL,
+ "metadata://gnu.org/software/wget/warc/wget.log",
+ NULL, manifest_uuid, NULL, "text/plain",
+ warc_log_fp, -1);
+ /* warc_write_resource_record has closed warc_log_fp. */
+
+ warc_log_fp = NULL;
+ log_set_warc_log_fp (NULL);
+ }
+}
+
+/* Finishes the WARC writing.
+ This should be called at the end of the program. */
+void
+warc_close (void)
+{
+ if (warc_current_file != NULL)
+ {
+ warc_write_metadata ();
+ *warc_current_warcinfo_uuid_str = 0;
+ fclose (warc_current_file);
+ warc_current_file = NULL;
+ }
+
+ if (warc_current_cdx_file != NULL)
+ {
+ fclose (warc_current_cdx_file);
+ warc_current_cdx_file = NULL;
+ }
+
+ if (warc_log_fp != NULL)
+ {
+ fclose (warc_log_fp);
+ log_set_warc_log_fp (NULL);
+ }
+}
+
+/* Creates a temporary file for writing WARC output.
+ The temporary file will be created in opt.warc_tempdir.
+ Returns the pointer to the temporary file, or NULL. */
+FILE *
+warc_tempfile (void)
+{
+ char filename[100];
+ int fd;
+
+ if (path_search (filename, 100, opt.warc_tempdir, "wget", true) == -1)
+ return NULL;
+
+#ifdef __VMS
+ /* 2013-07-12 SMS.
+ * mkostemp()+unlink()+fdopen() scheme causes trouble on VMS, so use
+ * mktemp() to uniquify the (VMS-style) name, and then use a normal
+ * fopen() with a "create temp file marked for delete" option.
+ */
+ {
+ char *tfn;
+
+ tfn = mktemp (filename); /* Get unique name from template. */
+ if (tfn == NULL)
+ return NULL;
+ return fopen (tfn, "w+", "fop=tmd"); /* Create auto-delete temp file. */
+ }
+#else /* def __VMS */
+ fd = mkostemp (filename, O_TEMPORARY);
+ if (fd < 0)
+ return NULL;
+
+#if !O_TEMPORARY
+ if (unlink (filename) < 0)
+ {
+ close(fd);
+ return NULL;
+ }
+#endif
+
+ return fdopen (fd, "wb+");
+#endif /* def __VMS [else] */
+}
+
+
+/* Writes a request record to the WARC file.
+ url is the target uri of the request,
+ timestamp_str is the timestamp of the request (generated with warc_timestamp),
+ record_uuid is the uuid of the request (generated with warc_uuid_str),
+ body is a pointer to a file containing the request headers and body.
+ ip is the ip address of the server (or NULL),
+ Calling this function will close body.
+ Returns true on success, false on error. */
+bool
+warc_write_request_record (const char *url, const char *timestamp_str,
+ const char *record_uuid, const ip_address *ip,
+ FILE *body, off_t payload_offset)
+{
+ warc_write_start_record ();
+ warc_write_header ("WARC-Type", "request");
+ warc_write_header_uri ("WARC-Target-URI", url);
+ warc_write_header ("Content-Type", "application/http;msgtype=request");
+ warc_write_date_header (timestamp_str);
+ warc_write_header ("WARC-Record-ID", record_uuid);
+ warc_write_ip_header (ip);
+ warc_write_header ("WARC-Warcinfo-ID", warc_current_warcinfo_uuid_str);
+ warc_write_digest_headers (body, payload_offset);
+ warc_write_block_from_file (body);
+ warc_write_end_record ();
+
+ fclose (body);
+
+ return warc_write_ok;
+}
+
+/* Writes a response record to the CDX file.
+ url is the target uri of the request/response,
+ timestamp_str is the timestamp of the request that generated this response,
+ (generated with warc_timestamp),
+ mime_type is the mime type of the response body (will be printed to CDX),
+ response_code is the HTTP response code (will be printed to CDX),
+ payload_digest is the sha1 digest of the payload,
+ redirect_location is the contents of the Location: header, or NULL (will be printed to CDX),
+ offset is the position of the WARC record in the WARC file,
+ warc_filename is the filename of the WARC,
+ response_uuid is the uuid of the response.
+ Returns true on success, false on error. */
+static bool
+warc_write_cdx_record (const char *url, const char *timestamp_str,
+ const char *mime_type, int response_code,
+ const char *payload_digest, const char *redirect_location,
+ off_t offset, const char *warc_filename _GL_UNUSED,
+ const char *response_uuid)
+{
+ /* Transform the timestamp. */
+ char timestamp_str_cdx[15];
+ char offset_string[MAX_INT_TO_STRING_LEN(off_t)];
+ const char *checksum;
+ char *tmp_location = NULL;
+
+ memcpy (timestamp_str_cdx , timestamp_str , 4); /* "YYYY" "-" */
+ memcpy (timestamp_str_cdx + 4, timestamp_str + 5, 2); /* "mm" "-" */
+ memcpy (timestamp_str_cdx + 6, timestamp_str + 8, 2); /* "dd" "T" */
+ memcpy (timestamp_str_cdx + 8, timestamp_str + 11, 2); /* "HH" ":" */
+ memcpy (timestamp_str_cdx + 10, timestamp_str + 14, 2); /* "MM" ":" */
+ memcpy (timestamp_str_cdx + 12, timestamp_str + 17, 2); /* "SS" "Z" */
+ timestamp_str_cdx[14] = '\0';
+
+ /* Rewrite the checksum. */
+ if (payload_digest != NULL)
+ checksum = payload_digest + 5; /* Skip the "sha1:" */
+ else
+ checksum = "-";
+
+ if (mime_type == NULL || strlen(mime_type) == 0)
+ mime_type = "-";
+ if (redirect_location == NULL || strlen(redirect_location) == 0)
+ tmp_location = strdup ("-");
+ else
+ tmp_location = url_escape(redirect_location);
+
+ number_to_string (offset_string, offset);
+
+ /* Print the CDX line. */
+ fprintf (warc_current_cdx_file, "%s %s %s %s %d %s %s - %s %s %s\n", url,
+ timestamp_str_cdx, url, mime_type, response_code, checksum,
+ tmp_location, offset_string, warc_current_filename,
+ response_uuid);
+ fflush (warc_current_cdx_file);
+ free (tmp_location);
+
+ return true;
+}
+
+/* Writes a revisit record to the WARC file.
+ url is the target uri of the request/response,
+ timestamp_str is the timestamp of the request that generated this response
+ (generated with warc_timestamp),
+ concurrent_to_uuid is the uuid of the request for that generated this response
+ (generated with warc_uuid_str),
+ refers_to_uuid is the uuid of the original response
+ (generated with warc_uuid_str),
+ payload_digest is the sha1 digest of the payload,
+ ip is the ip address of the server (or NULL),
+ body is a pointer to a file containing the response headers (without payload).
+ Calling this function will close body.
+ Returns true on success, false on error. */
+static bool
+warc_write_revisit_record (const char *url, const char *timestamp_str,
+ const char *concurrent_to_uuid, const char *payload_digest,
+ const char *refers_to, const ip_address *ip, FILE *body)
+{
+ char revisit_uuid [48];
+ char block_digest[BASE32_LENGTH(SHA1_DIGEST_SIZE) + 1 + 5];
+ char sha1_res_block[SHA1_DIGEST_SIZE];
+
+ warc_uuid_str (revisit_uuid, sizeof (revisit_uuid));
+
+ sha1_stream (body, sha1_res_block);
+ warc_base32_sha1_digest (sha1_res_block, block_digest, sizeof(block_digest));
+
+ warc_write_start_record ();
+ warc_write_header ("WARC-Type", "revisit");
+ warc_write_header ("WARC-Record-ID", revisit_uuid);
+ warc_write_header ("WARC-Warcinfo-ID", warc_current_warcinfo_uuid_str);
+ warc_write_header ("WARC-Concurrent-To", concurrent_to_uuid);
+ warc_write_header ("WARC-Refers-To", refers_to);
+ warc_write_header ("WARC-Profile", "http://netpreserve.org/warc/1.0/revisit/identical-payload-digest");
+ warc_write_header ("WARC-Truncated", "length");
+ warc_write_header_uri ("WARC-Target-URI", url);
+ warc_write_date_header (timestamp_str);
+ warc_write_ip_header (ip);
+ warc_write_header ("Content-Type", "application/http;msgtype=response");
+ warc_write_header ("WARC-Block-Digest", block_digest);
+ warc_write_header ("WARC-Payload-Digest", payload_digest);
+ warc_write_block_from_file (body);
+ warc_write_end_record ();
+
+ fclose (body);
+
+ return warc_write_ok;
+}
+
+/* Writes a response record to the WARC file.
+ url is the target uri of the request/response,
+ timestamp_str is the timestamp of the request that generated this response
+ (generated with warc_timestamp),
+ concurrent_to_uuid is the uuid of the request for that generated this response
+ (generated with warc_uuid_str),
+ ip is the ip address of the server (or NULL),
+ body is a pointer to a file containing the response headers and body.
+ mime_type is the mime type of the response body (will be printed to CDX),
+ response_code is the HTTP response code (will be printed to CDX),
+ redirect_location is the contents of the Location: header, or NULL (will be printed to CDX),
+ Calling this function will close body.
+ Returns true on success, false on error. */
+bool
+warc_write_response_record (const char *url, const char *timestamp_str,
+ const char *concurrent_to_uuid, const ip_address *ip,
+ FILE *body, off_t payload_offset, const char *mime_type,
+ int response_code, const char *redirect_location)
+{
+ char block_digest[BASE32_LENGTH(SHA1_DIGEST_SIZE) + 1 + 5];
+ char payload_digest[BASE32_LENGTH(SHA1_DIGEST_SIZE) + 1 + 5];
+ char sha1_res_block[SHA1_DIGEST_SIZE];
+ char sha1_res_payload[SHA1_DIGEST_SIZE];
+ char response_uuid [48];
+ off_t offset;
+
+ if (opt.warc_digests_enabled)
+ {
+ /* Calculate the block and payload digests. */
+ rewind (body);
+ if (warc_sha1_stream_with_payload (body, sha1_res_block, sha1_res_payload,
+ payload_offset) == 0)
+ {
+ /* Decide (based on url + payload digest) if we have seen this
+ data before. */
+ struct warc_cdx_record *rec_existing;
+ rec_existing = warc_find_duplicate_cdx_record (url, sha1_res_payload);
+ if (rec_existing != NULL)
+ {
+ bool result;
+
+ /* Found an existing record. */
+ logprintf (LOG_VERBOSE,
+ _("Found exact match in CDX file. Saving revisit record to WARC.\n"));
+
+ /* Remove the payload from the file. */
+ if (payload_offset > 0)
+ {
+ if (ftruncate (fileno (body), payload_offset) == -1)
+ return false;
+ }
+
+ /* Send the original payload digest. */
+ warc_base32_sha1_digest (sha1_res_payload, payload_digest, sizeof(payload_digest));
+ result = warc_write_revisit_record (url, timestamp_str,
+ concurrent_to_uuid, payload_digest, rec_existing->uuid,
+ ip, body);
+
+ return result;
+ }
+
+ warc_base32_sha1_digest (sha1_res_block, block_digest, sizeof(block_digest));
+ warc_base32_sha1_digest (sha1_res_payload, payload_digest, sizeof(payload_digest));
+ }
+ }
+
+ /* Not a revisit, just store the record. */
+
+ warc_uuid_str (response_uuid, sizeof (response_uuid));
+
+ fseeko (warc_current_file, 0L, SEEK_END);
+ offset = ftello (warc_current_file);
+
+ warc_write_start_record ();
+ warc_write_header ("WARC-Type", "response");
+ warc_write_header ("WARC-Record-ID", response_uuid);
+ warc_write_header ("WARC-Warcinfo-ID", warc_current_warcinfo_uuid_str);
+ warc_write_header ("WARC-Concurrent-To", concurrent_to_uuid);
+ warc_write_header_uri ("WARC-Target-URI", url);
+ warc_write_date_header (timestamp_str);
+ warc_write_ip_header (ip);
+ warc_write_header ("WARC-Block-Digest", block_digest);
+ warc_write_header ("WARC-Payload-Digest", payload_digest);
+ warc_write_header ("Content-Type", "application/http;msgtype=response");
+ warc_write_block_from_file (body);
+ warc_write_end_record ();
+
+ fclose (body);
+
+ if (warc_write_ok && opt.warc_cdx_enabled)
+ {
+ /* Add this record to the CDX. */
+ warc_write_cdx_record (url, timestamp_str, mime_type, response_code,
+ payload_digest, redirect_location, offset, warc_current_filename,
+ response_uuid);
+ }
+
+ return warc_write_ok;
+}
+
+/* Writes a resource or metadata record to the WARC file.
+ warc_type is either "resource" or "metadata",
+ resource_uuid is the uuid of the resource (or NULL),
+ url is the target uri of the resource,
+ timestamp_str is the timestamp (generated with warc_timestamp),
+ concurrent_to_uuid is the uuid of the record that generated this,
+ resource (generated with warc_uuid_str) or NULL,
+ ip is the ip address of the server (or NULL),
+ content_type is the mime type of the body (or NULL),
+ body is a pointer to a file containing the resource data.
+ Calling this function will close body.
+ Returns true on success, false on error. */
+static bool
+warc_write_record (const char *record_type, const char *resource_uuid,
+ const char *url, const char *timestamp_str,
+ const char *concurrent_to_uuid,
+ const ip_address *ip, const char *content_type, FILE *body,
+ off_t payload_offset)
+{
+ char uuid_buf[48];
+
+ if (resource_uuid == NULL)
+ {
+ warc_uuid_str (uuid_buf, sizeof (uuid_buf));
+ resource_uuid = uuid_buf;
+ }
+
+ if (content_type == NULL)
+ content_type = "application/octet-stream";
+
+ warc_write_start_record ();
+ warc_write_header ("WARC-Type", record_type);
+ warc_write_header ("WARC-Record-ID", resource_uuid);
+ warc_write_header ("WARC-Warcinfo-ID", warc_current_warcinfo_uuid_str);
+ warc_write_header ("WARC-Concurrent-To", concurrent_to_uuid);
+ warc_write_header_uri ("WARC-Target-URI", url);
+ warc_write_date_header (timestamp_str);
+ warc_write_ip_header (ip);
+ warc_write_digest_headers (body, payload_offset);
+ warc_write_header ("Content-Type", content_type);
+ warc_write_block_from_file (body);
+ warc_write_end_record ();
+
+ fclose (body);
+
+ return warc_write_ok;
+}
+
+/* Writes a resource record to the WARC file.
+ resource_uuid is the uuid of the resource (or NULL),
+ url is the target uri of the resource,
+ timestamp_str is the timestamp (generated with warc_timestamp),
+ concurrent_to_uuid is the uuid of the record that generated this,
+ resource (generated with warc_uuid_str) or NULL,
+ ip is the ip address of the server (or NULL),
+ content_type is the mime type of the body (or NULL),
+ body is a pointer to a file containing the resource data.
+ Calling this function will close body.
+ Returns true on success, false on error. */
+bool
+warc_write_resource_record (const char *resource_uuid, const char *url,
+ const char *timestamp_str, const char *concurrent_to_uuid,
+ const ip_address *ip, const char *content_type, FILE *body,
+ off_t payload_offset)
+{
+ return warc_write_record ("resource",
+ resource_uuid, url, timestamp_str, concurrent_to_uuid,
+ ip, content_type, body, payload_offset);
+}
+
+/* Writes a metadata record to the WARC file.
+ record_uuid is the uuid of the record (or NULL),
+ url is the target uri of the record,
+ timestamp_str is the timestamp (generated with warc_timestamp),
+ concurrent_to_uuid is the uuid of the record that generated this,
+ record (generated with warc_uuid_str) or NULL,
+ ip is the ip address of the server (or NULL),
+ content_type is the mime type of the body (or NULL),
+ body is a pointer to a file containing the record data.
+ Calling this function will close body.
+ Returns true on success, false on error. */
+bool
+warc_write_metadata_record (const char *record_uuid, const char *url,
+ const char *timestamp_str, const char *concurrent_to_uuid,
+ ip_address *ip, const char *content_type, FILE *body,
+ off_t payload_offset)
+{
+ return warc_write_record ("metadata",
+ record_uuid, url, timestamp_str, concurrent_to_uuid,
+ ip, content_type, body, payload_offset);
+}
diff --git a/src/warc.h b/src/warc.h
new file mode 100644
index 0000000..7238cff
--- /dev/null
+++ b/src/warc.h
@@ -0,0 +1,27 @@
+/* Declarations of WARC helper methods. */
+#ifndef WARC_H
+#define WARC_H
+
+#include "host.h"
+
+void warc_init (void);
+void warc_close (void);
+void warc_uuid_str (char *id_str, size_t urn_size);
+
+char * warc_timestamp (char *timestamp, size_t timestamp_size);
+
+FILE * warc_tempfile (void);
+
+bool warc_write_request_record (const char *url, const char *timestamp_str,
+ const char *concurrent_to_uuid, const ip_address *ip, FILE *body, off_t payload_offset);
+bool warc_write_response_record (const char *url, const char *timestamp_str,
+ const char *concurrent_to_uuid, const ip_address *ip, FILE *body, off_t payload_offset,
+ const char *mime_type, int response_code, const char *redirect_location);
+bool warc_write_resource_record (const char *resource_uuid, const char *url,
+ const char *timestamp_str, const char *concurrent_to_uuid, const ip_address *ip,
+ const char *content_type, FILE *body, off_t payload_offset);
+bool warc_write_metadata_record (const char *record_uuid, const char *url,
+ const char *timestamp_str, const char *concurrent_to_uuid, ip_address *ip,
+ const char *content_type, FILE *body, off_t payload_offset);
+
+#endif /* WARC_H */
diff --git a/src/wget.h b/src/wget.h
new file mode 100644
index 0000000..b6a9dca
--- /dev/null
+++ b/src/wget.h
@@ -0,0 +1,333 @@
+/* Miscellaneous declarations.
+ Copyright (C) 1996-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+/* This file contains declarations that are universally useful and
+ those that don't fit elsewhere. It also includes sysdep.h which
+ includes some often-needed system includes, like the obnoxious
+ <time.h> inclusion. */
+
+#ifndef WGET_H
+#define WGET_H
+
+#include "config.h"
+
+#if ((defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__)
+# define WINDOWS
+#endif
+
+/* Include these, so random files need not include them. */
+#include "sysdep.h"
+
+/* Disable assertions when debug support is not compiled in. */
+#ifndef ENABLE_DEBUG
+#ifndef NDEBUG
+# define NDEBUG
+#endif
+#endif
+
+/* Is OpenSSL or GNUTLS available? */
+#if defined HAVE_LIBSSL || defined HAVE_LIBSSL32 || defined HAVE_LIBGNUTLS
+# define HAVE_SSL
+# define HAVE_HSTS /* There's no sense in enabling HSTS without SSL */
+#endif
+
+/* `gettext (FOO)' is long to write, so we use `_(FOO)'. If NLS is
+ unavailable, _(STRING) simply returns STRING. */
+#include "gettext.h"
+#define _(STRING) gettext(STRING)
+
+/* A pseudo function call that serves as a marker for the automated
+ extraction of messages, but does not call gettext(). The run-time
+ translation is done at a different place in the code. The purpose
+ of the N_("...") call is to make the message snarfer aware that the
+ "..." string needs to be translated. STRING should be a string
+ literal. Concatenated strings and other string expressions won't
+ work. The macro's expansion is not parenthesized, so that it is
+ suitable as initializer for static 'char[]' or 'const char[]'
+ variables. -- explanation partly taken from GNU make. */
+#define N_(string) string
+
+#if HAVE_WCWIDTH && HAVE_MBTOWC
+# define USE_NLS_PROGRESS_BAR 1
+#else
+/* Just to be a little paranoid about it. */
+# undef USE_NLS_PROGRESS_BAR
+#endif
+
+/* I18N NOTE: You will notice that none of the DEBUGP messages are
+ marked as translatable. This is intentional, for a few reasons:
+
+ 1) The debug messages are not meant for the users to look at, but
+ for the developers; as such, they should be considered more like
+ source comments than real program output.
+
+ 2) The messages are numerous, and yet they are random and frivolous
+ ("double yuck!" and such). There would be a lot of work with no
+ gain.
+
+ 3) Finally, the debug messages are meant to be a clue for me to
+ debug problems with Wget. If I get them in a language I don't
+ understand, debugging will become a new challenge of its own! */
+
+/* locale independent replacement for ctype.h */
+#include "c-ctype.h"
+
+/* Conditionalize the use of GCC's __attribute__((format)) and
+ __builtin_expect features using macros. */
+
+#if defined(__GNUC__) && __GNUC__ >= 3
+# define GCC_FORMAT_ATTR(a, b) __attribute__ ((format (printf, a, b)))
+# define LIKELY(exp) __builtin_expect (!!(exp), 1)
+# define UNLIKELY(exp) __builtin_expect ((exp), 0)
+#else
+# define GCC_FORMAT_ATTR(a, b)
+# define LIKELY(exp) (exp)
+# define UNLIKELY(exp) (exp)
+#endif
+
+/* Execute the following statement if debugging is both enabled at
+ compile-time and requested at run-time; a no-op otherwise. */
+
+#ifdef ENABLE_DEBUG
+# define IF_DEBUG if (UNLIKELY (opt.debug))
+#else
+# define IF_DEBUG if (0)
+#endif
+
+/* Print ARGS if debugging is enabled and requested, otherwise do
+ nothing. This must be called with an extra level of parentheses
+ because it's not possible to pass a variable number of arguments to
+ a macro (in portable C89). ARGS are like arguments to printf. */
+
+#define DEBUGP(args) do { IF_DEBUG { debug_logprintf args; } } while (0)
+
+/* Pick an integer type large enough for file sizes, content lengths,
+ and such. Because today's files can be very large, it should be a
+ signed integer at least 64 bits wide. This can't be typedeffed to
+ off_t because: a) off_t is always 32-bit on Windows, and b) we
+ don't necessarily want to tie having a 64-bit type for internal
+ calculations to having LFS support. */
+
+/* Gnulib's stdint.h module essentially guarantees the existence of int64_t.
+ * Thus we can simply assume it always exists and use it.
+ */
+#include <stdint.h>
+
+typedef int64_t wgint;
+#define WGINT_MAX INT64_MAX
+typedef wgint SUM_SIZE_INT;
+
+#define str_to_wgint strtol
+
+#include "options.h"
+
+/* Everything uses this, so include them here directly. */
+#ifdef __cplusplus
+# undef _Noreturn
+#endif
+#include "xalloc.h"
+
+/* Likewise for logging functions. */
+#include "log.h"
+
+/* Likewise for quoting functions. */
+#include "quote.h"
+#include "quotearg.h"
+
+/* Likewise for struct iri definition */
+#include "iri.h"
+
+/* Useful macros used across the code: */
+
+/* The number of elements in an array. For example:
+ static char a[] = "foo"; -- countof(a) == 4 (note terminating \0)
+ int a[5] = {1, 2}; -- countof(a) == 5
+ char *a[] = { -- countof(a) == 3
+ "foo", "bar", "baz"
+ }; */
+#define countof(array) (sizeof (array) / sizeof ((array)[0]))
+
+/* Zero out a value. */
+#define xzero(x) memset (&(x), '\0', sizeof (x))
+
+/* Convert an ASCII hex digit to the corresponding number between 0
+ and 15. c should be a hexadecimal digit that satisfies c_isxdigit;
+ otherwise, the result is undefined. */
+static inline unsigned char _unhex(unsigned char c)
+{
+ return c <= '9' ? c - '0' : (c <= 'F' ? c - 'A' + 10 : c - 'a' + 10);
+}
+#define X2DIGITS_TO_NUM(h1, h2) ((_unhex (h1) << 4) + _unhex (h2))
+
+/* The reverse of the above: convert a number in the [0, 16) range to
+ the ASCII representation of the corresponding hexadecimal digit.
+ `+ 0' is there so you can't accidentally use it as an lvalue. */
+#define XNUM_TO_DIGIT(x) ("0123456789ABCDEF"[x] + 0)
+#define XNUM_TO_digit(x) ("0123456789abcdef"[x] + 0)
+
+/* Return non-zero if string bounded between BEG and END is equal to
+ STRING_LITERAL. The comparison is case-sensitive. */
+#define BOUNDED_EQUAL(beg, end, string_literal) \
+ ((end) - (beg) == sizeof (string_literal) - 1 \
+ && !memcmp (beg, string_literal, sizeof (string_literal) - 1))
+
+/* The same as above, except the comparison is case-insensitive. */
+#define BOUNDED_EQUAL_NO_CASE(beg, end, string_literal) \
+ ((end) - (beg) == sizeof (string_literal) - 1 \
+ && !c_strncasecmp (beg, string_literal, sizeof (string_literal) - 1))
+
+/* Generally useful if you want to avoid arbitrary size limits but
+ don't need a full dynamic array. Assumes that BASEVAR points to a
+ malloced array of TYPE objects (or possibly a NULL pointer, if
+ SIZEVAR is 0), with the total size stored in SIZEVAR. This macro
+ will realloc BASEVAR as necessary so that it can hold at least
+ NEEDED_SIZE objects. The reallocing is done by doubling, which
+ ensures constant amortized time per element. */
+
+#define DO_REALLOC(basevar, sizevar, needed_size, type) do { \
+ long DR_needed_size = (needed_size); \
+ long DR_newsize = 0; \
+ while ((sizevar) < (DR_needed_size)) { \
+ DR_newsize = sizevar << 1; \
+ if (DR_newsize < 16) \
+ DR_newsize = 16; \
+ (sizevar) = DR_newsize; \
+ } \
+ if (DR_newsize) \
+ basevar = xrealloc (basevar, DR_newsize * sizeof (type)); \
+} while (0)
+
+/* Used to print pointers (usually for debugging). Print pointers
+ using printf ("0x%0*lx", PTR_FORMAT (p)). (%p is too unpredictable;
+ some implementations prepend 0x, while some don't, and most don't
+ 0-pad the address.) */
+#define PTR_FORMAT(p) (int) (2 * sizeof (void *)), (unsigned long) (p)
+
+/* Find the maximum buffer length needed to print an integer of type `x'
+ in base 10. 24082 / 10000 = 8*log_{10}(2). */
+#define MAX_INT_TO_STRING_LEN(x) ((sizeof(x) * 24082 / 10000) + 2)
+
+/* Find the minimum or maximum of two provided values */
+# define MIN(i, j) ((i) <= (j) ? (i) : (j))
+# define MAX(i, j) ((i) >= (j) ? (i) : (j))
+
+
+extern const char *exec_name;
+extern const char *program_name;
+extern const char *program_argstring;
+
+/* Document type ("dt") flags */
+enum
+{
+ TEXTHTML = 0x0001, /* document is of type text/html
+ or application/xhtml+xml */
+ RETROKF = 0x0002, /* retrieval was OK */
+ HEAD_ONLY = 0x0004, /* only send the HEAD request */
+ SEND_NOCACHE = 0x0008, /* send Cache-Control: no-cache and Pragma: no-cache directive */
+ ACCEPTRANGES = 0x0010, /* Accept-ranges header was found */
+ ADDED_HTML_EXTENSION = 0x0020, /* added ".html" extension due to -E */
+ TEXTCSS = 0x0040, /* document is of type text/css */
+ IF_MODIFIED_SINCE = 0x0080, /* use if-modified-since header */
+ METALINK_METADATA = 0x0100 /* use HTTP response for Metalink metadata */
+};
+
+/* Universal error type -- used almost everywhere. Error reporting of
+ this detail is not generally used or needed and should be
+ simplified. */
+typedef enum
+{
+ NOCONERROR, HOSTERR, CONSOCKERR, CONERROR, CONSSLERR,
+ CONIMPOSSIBLE, NEWLOCATION,
+ FTPOK, FTPLOGINC, FTPLOGREFUSED, FTPPORTERR, FTPSYSERR,
+ FTPNSFOD, FTPUNKNOWNTYPE, FTPRERR,
+ FTPSRVERR, FTPRETRINT, FTPRESTFAIL, URLERROR, FOPENERR,
+ FOPEN_EXCL_ERR, FWRITEERR, HEOF, GATEWAYTIMEOUT,
+ HERR, RETROK, RECLEVELEXC, WRONGCODE,
+ FTPINVPASV, FTPNOPASV, FTPNOPBSZ, FTPNOPROT, FTPNOAUTH,
+ CONTNOTSUPPORTED, RETRUNNEEDED, RETRFINISHED,
+ READERR, TRYLIMEXC, FILEBADFILE, RANGEERR,
+ RETRBADPATTERN, PROXERR,
+ AUTHFAILED, QUOTEXC, WRITEFAILED, SSLINITFAILED, VERIFCERTERR,
+ UNLINKERR, NEWLOCATION_KEEP_POST, CLOSEFAILED, ATTRMISSING, UNKNOWNATTR,
+ WARC_ERR, WARC_TMP_FOPENERR, WARC_TMP_FWRITEERR,
+ TIMECONV_ERR,
+ METALINK_PARSE_ERROR, METALINK_RETR_ERROR,
+ METALINK_CHKSUM_ERROR, METALINK_SIG_ERROR, METALINK_MISSING_RESOURCE,
+ RETR_WITH_METALINK,
+ METALINK_SIZE_ERROR
+} uerr_t;
+
+/* 2005-02-19 SMS.
+ Select an appropriate "orig" suffix and a separator character for
+ adding a unique suffix to a file name.
+
+ A VMS ODS2 file system can't tolerate multiple dots. An ODS5 file
+ system can, but even there not all dots are equal, and heroic effort
+ would be needed to get ".html^.orig" rather than (the less desirable)
+ "^.html.orig". It's more satisfactory always to use "_orig" on VMS
+ (rather than including "vms.h", testing "ods5_dest", and acting
+ accordingly).
+
+ Note that code in various places assumes that this string is five
+ characters long.
+*/
+# ifdef __VMS
+# define ORIG_SFX "_orig"
+# else /* def __VMS */
+# define ORIG_SFX ".orig"
+# endif /* def __VMS [else] */
+
+/* ".NNN" unique-ifying suffix separator character for unique_name() in
+ url.c (and anywhere else). Note that on VMS, the file system's
+ version numbers solve the problem that unique_name() is designed to
+ handle, obviating this whole exercise. Other systems may specify a
+ character different from "." here, if desired.
+*/
+# ifndef __VMS
+# define UNIQ_SEP '.'
+# endif /* ndef __VMS */
+
+#if defined FUZZING && defined TESTING
+/* Rename fopen so we can have our own version in fuzz/main.c to
+ not create random files. */
+# define fopen(fp, mode) fopen_wget(fp, mode)
+# define exit(status) exit_wget(status)
+
+/* In run_wgetrc() we call fopen_wgetrc() instead of fopen, so we can catch
+ the call in our fuzzers. */
+FILE *fopen_wget(const char *pathname, const char *mode);
+FILE *fopen_wgetrc(const char *pathname, const char *mode);
+void exit_wget(int status);
+#else
+/* When not fuzzing, we want to call fopen() instead of fopen_wgetrc() */
+# define fopen_wgetrc(fp, mode) fopen(fp, mode)
+#endif /* FUZZING && TESTING */
+
+#endif /* WGET_H */
diff --git a/src/xattr.c b/src/xattr.c
new file mode 100644
index 0000000..a5261f1
--- /dev/null
+++ b/src/xattr.c
@@ -0,0 +1,95 @@
+/* xattr.h -- POSIX Extended Attribute support.
+
+ Copyright (C) 2016, 2018-2020 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, see <http://www.gnu.org/licenses/>. */
+
+#include "wget.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include "log.h"
+#include "utils.h"
+#include "xattr.h"
+
+#ifdef USE_XATTR
+
+static int
+write_xattr_metadata (const char *name, const char *value, FILE *fp)
+{
+ int retval = -1;
+
+ if (name && value && fp)
+ {
+ retval = fsetxattr (fileno (fp), name, value, strlen (value), 0);
+ /* FreeBSD's extattr_set_fd returns the length of the extended attribute. */
+ retval = (retval < 0) ? retval : 0;
+ if (retval)
+ DEBUGP (("Failed to set xattr %s.\n", quote(name)));
+ }
+
+ return retval;
+}
+
+#else /* USE_XATTR */
+
+static int
+write_xattr_metadata (const char *name, const char *value, FILE *fp)
+{
+ (void)name;
+ (void)value;
+ (void)fp;
+
+ return 0;
+}
+
+#endif /* USE_XATTR */
+
+int
+set_file_metadata (const struct url *origin_url, const struct url *referrer_url, FILE *fp)
+{
+ /* Save metadata about where the file came from (requested, final URLs) to
+ * user POSIX Extended Attributes of retrieved file.
+ *
+ * For more details about the user namespace see
+ * [http://freedesktop.org/wiki/CommonExtendedAttributes] and
+ * [http://0pointer.de/lennart/projects/mod_mime_xattr/].
+ */
+ int retval = -1;
+ char *value;
+
+ if (!origin_url || !fp)
+ return retval;
+
+ value = url_string (origin_url, URL_AUTH_HIDE);
+ retval = write_xattr_metadata ("user.xdg.origin.url", escnonprint_uri (value), fp);
+ xfree (value);
+
+ if (!retval && referrer_url)
+ {
+ struct url u;
+
+ memset(&u, 0, sizeof(u));
+ u.scheme = referrer_url->scheme;
+ u.host = referrer_url->host;
+ u.port = referrer_url->port;
+
+ value = url_string (&u, 0);
+ retval = write_xattr_metadata ("user.xdg.referrer.url", escnonprint_uri (value), fp);
+ xfree (value);
+ }
+
+ return retval;
+}
diff --git a/src/xattr.h b/src/xattr.h
new file mode 100644
index 0000000..20eebe0
--- /dev/null
+++ b/src/xattr.h
@@ -0,0 +1,46 @@
+/* xattr.h -- POSIX Extended Attribute function mappings.
+
+ Copyright (C) 2016, 2018-2020 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, see <http://www.gnu.org/licenses/>. */
+
+#include <stdio.h>
+#include <url.h>
+
+#ifndef _XATTR_H
+#define _XATTR_H
+
+/* Store metadata name/value attributes against fp. */
+int set_file_metadata (const struct url *origin_url, const struct url *referrer_url, FILE *fp);
+
+#if defined(__linux)
+/* libc on Linux has fsetxattr (5 arguments). */
+# include <sys/xattr.h>
+# define USE_XATTR
+#elif defined(__APPLE__)
+/* libc on OS/X has fsetxattr (6 arguments). */
+# include <sys/xattr.h>
+# define fsetxattr(file, name, buffer, size, flags) \
+ fsetxattr ((file), (name), (buffer), (size), 0, (flags))
+# define USE_XATTR
+#elif defined(__FreeBSD_version) && (__FreeBSD_version > 500000)
+/* FreeBSD */
+# include <sys/types.h>
+# include <sys/extattr.h>
+# define fsetxattr(file, name, buffer, size, flags) \
+ extattr_set_fd ((file), EXTATTR_NAMESPACE_USER, (name), (buffer), (size))
+# define USE_XATTR
+#endif
+
+#endif /* _XATTR_H */