diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 5707 |
1 files changed, 5707 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac new file mode 100644 index 0000000..379cd74 --- /dev/null +++ b/configure.ac @@ -0,0 +1,5707 @@ +# +# Copyright (c) 1999-2004 Damien Miller +# +# Permission to use, copy, modify, and distribute this software for any +# purpose with or without fee is hereby granted, provided that the above +# copyright notice and this permission notice appear in all copies. +# +# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES +# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR +# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF +# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + +AC_INIT([OpenSSH], [Portable], [openssh-unix-dev@mindrot.org]) +AC_CONFIG_MACRO_DIR([m4]) +AC_CONFIG_SRCDIR([ssh.c]) + +# Check for stale configure as early as possible. +for i in $srcdir/configure.ac $srcdir/m4/*.m4; do + if test "$i" -nt "$srcdir/configure"; then + AC_MSG_ERROR([$i newer than configure, run autoreconf]) + fi +done + +AC_LANG([C]) + +AC_CONFIG_HEADERS([config.h]) +AC_PROG_CC([cc gcc clang]) + +# XXX relax this after reimplementing logit() etc. +AC_MSG_CHECKING([if $CC supports C99-style variadic macros]) +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +int f(int a, int b, int c) { return a + b + c; } +#define F(a, ...) f(a, __VA_ARGS__) +]], [[return F(1, 2, -3);]])], + [ AC_MSG_RESULT([yes]) ], + [ AC_MSG_ERROR([*** OpenSSH requires support for C99-style variadic macros]) ] +) + +AC_CANONICAL_HOST +AC_C_BIGENDIAN + +# Checks for programs. +AC_PROG_AWK +AC_PROG_CPP +AC_PROG_RANLIB +AC_PROG_INSTALL +AC_PROG_EGREP +AC_PROG_MKDIR_P +AC_CHECK_TOOLS([AR], [ar]) +AC_PATH_PROG([CAT], [cat]) +AC_PATH_PROG([KILL], [kill]) +AC_PATH_PROG([SED], [sed]) +AC_PATH_PROG([TEST_MINUS_S_SH], [bash]) +AC_PATH_PROG([TEST_MINUS_S_SH], [ksh]) +AC_PATH_PROG([TEST_MINUS_S_SH], [sh]) +AC_PATH_PROG([SH], [bash]) +AC_PATH_PROG([SH], [ksh]) +AC_PATH_PROG([SH], [sh]) +AC_PATH_PROG([GROFF], [groff]) +AC_PATH_PROG([NROFF], [nroff awf]) +AC_PATH_PROG([MANDOC], [mandoc]) +AC_PATH_TOOL([PKGCONFIG], [pkg-config], [no]) +AC_SUBST([TEST_SHELL], [sh]) + +dnl select manpage formatter to be used to build "cat" format pages. +if test "x$MANDOC" != "x" ; then + MANFMT="$MANDOC" +elif test "x$NROFF" != "x" ; then + MANFMT="$NROFF -mandoc" +elif test "x$GROFF" != "x" ; then + MANFMT="$GROFF -mandoc -Tascii" +else + AC_MSG_WARN([no manpage formatter found]) + MANFMT="false" +fi +AC_SUBST([MANFMT]) + +dnl for buildpkg.sh +AC_PATH_PROG([PATH_GROUPADD_PROG], [groupadd], [groupadd], + [/usr/sbin${PATH_SEPARATOR}/etc]) +AC_PATH_PROG([PATH_USERADD_PROG], [useradd], [useradd], + [/usr/sbin${PATH_SEPARATOR}/etc]) +AC_CHECK_PROG([MAKE_PACKAGE_SUPPORTED], [pkgmk], [yes], [no]) +if test -x /sbin/sh; then + AC_SUBST([STARTUP_SCRIPT_SHELL], [/sbin/sh]) +else + AC_SUBST([STARTUP_SCRIPT_SHELL], [/bin/sh]) +fi + +# System features +AC_SYS_LARGEFILE + +if test -z "$AR" ; then + AC_MSG_ERROR([*** 'ar' missing, please install or fix your \$PATH ***]) +fi + +AC_PATH_PROG([PATH_PASSWD_PROG], [passwd]) +if test ! -z "$PATH_PASSWD_PROG" ; then + AC_DEFINE_UNQUOTED([_PATH_PASSWD_PROG], ["$PATH_PASSWD_PROG"], + [Full path of your "passwd" program]) +fi + +dnl Since autoconf doesn't support it very well, we no longer allow users to +dnl override LD, however keeping the hook here for now in case there's a use +dnl use case we overlooked and someone needs to re-enable it. Unless a good +dnl reason is found we'll be removing this in future. +LD="$CC" +AC_SUBST([LD]) + +AC_C_INLINE + +AC_CHECK_DECL([LLONG_MAX], [have_llong_max=1], , [#include <limits.h>]) +AC_CHECK_DECL([LONG_LONG_MAX], [have_long_long_max=1], , [#include <limits.h>]) +AC_CHECK_DECL([SYSTR_POLICY_KILL], [have_systr_policy_kill=1], , [ + #include <sys/types.h> + #include <sys/param.h> + #include <dev/systrace.h> +]) +AC_CHECK_DECL([RLIMIT_NPROC], + [AC_DEFINE([HAVE_RLIMIT_NPROC], [], [sys/resource.h has RLIMIT_NPROC])], , [ + #include <sys/types.h> + #include <sys/resource.h> +]) +AC_CHECK_DECL([PR_SET_NO_NEW_PRIVS], [have_linux_no_new_privs=1], , [ + #include <sys/types.h> + #include <linux/prctl.h> +]) + +openssl=yes +openssl_bin=openssl +AC_ARG_WITH([openssl], + [ --without-openssl Disable use of OpenSSL; use only limited internal crypto **EXPERIMENTAL** ], + [ if test "x$withval" = "xno" ; then + openssl=no + openssl_bin="" + fi + ] +) +AC_MSG_CHECKING([whether OpenSSL will be used for cryptography]) +if test "x$openssl" = "xyes" ; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED([WITH_OPENSSL], [1], [use libcrypto for cryptography]) +else + AC_MSG_RESULT([no]) +fi + +use_stack_protector=1 +use_toolchain_hardening=1 +AC_ARG_WITH([stackprotect], + [ --without-stackprotect Don't use compiler's stack protection], [ + if test "x$withval" = "xno"; then + use_stack_protector=0 + fi ]) +AC_ARG_WITH([hardening], + [ --without-hardening Don't use toolchain hardening flags], [ + if test "x$withval" = "xno"; then + use_toolchain_hardening=0 + fi ]) + +# We use -Werror for the tests only so that we catch warnings like "this is +# on by default" for things like -fPIE. +AC_MSG_CHECKING([if $CC supports -Werror]) +saved_CFLAGS="$CFLAGS" +CFLAGS="$CFLAGS -Werror" +AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int main(void) { return 0; }]])], + [ AC_MSG_RESULT([yes]) + WERROR="-Werror"], + [ AC_MSG_RESULT([no]) + WERROR="" ] +) +CFLAGS="$saved_CFLAGS" + +if test "$GCC" = "yes" || test "$GCC" = "egcs"; then + AC_MSG_CHECKING([gcc version]) + GCC_VER=`$CC -v 2>&1 | $AWK '/gcc version /{print $3}'` + case "$GCC_VER" in + 1.*) no_attrib_nonnull=1 ;; + 2.8* | 2.9*) + no_attrib_nonnull=1 + ;; + 2.*) no_attrib_nonnull=1 ;; + *) ;; + esac + AC_MSG_RESULT([$GCC_VER]) + + AC_MSG_CHECKING([clang version]) + ver="`$CC -v 2>&1`" + if echo "$ver" | grep "Apple" >/dev/null; then + CLANG_VER=apple-`echo "$ver" | grep 'clang version' | \ + $SED 's/.*clang version //g' | $AWK '{print $1}'` + else + CLANG_VER=`echo "$ver" | grep 'clang version' | \ + $SED 's/.*clang version //g' | $AWK '{print $1}'` + fi + AC_MSG_RESULT([$CLANG_VER]) + + OSSH_CHECK_CFLAG_COMPILE([-pipe]) + OSSH_CHECK_CFLAG_COMPILE([-Wunknown-warning-option]) + OSSH_CHECK_CFLAG_COMPILE([-Wno-error=format-truncation]) + OSSH_CHECK_CFLAG_COMPILE([-Qunused-arguments]) + OSSH_CHECK_CFLAG_COMPILE([-Wall]) + OSSH_CHECK_CFLAG_COMPILE([-Wextra]) + OSSH_CHECK_CFLAG_COMPILE([-Wpointer-arith]) + OSSH_CHECK_CFLAG_COMPILE([-Wuninitialized]) + OSSH_CHECK_CFLAG_COMPILE([-Wsign-compare]) + OSSH_CHECK_CFLAG_COMPILE([-Wformat-security]) + OSSH_CHECK_CFLAG_COMPILE([-Wsizeof-pointer-memaccess]) + OSSH_CHECK_CFLAG_COMPILE([-Wpointer-sign], [-Wno-pointer-sign]) + OSSH_CHECK_CFLAG_COMPILE([-Wunused-parameter], [-Wno-unused-parameter]) + OSSH_CHECK_CFLAG_COMPILE([-Wunused-result], [-Wno-unused-result]) + OSSH_CHECK_CFLAG_COMPILE([-Wimplicit-fallthrough]) + OSSH_CHECK_CFLAG_COMPILE([-Wmisleading-indentation]) + OSSH_CHECK_CFLAG_COMPILE([-Wbitwise-instead-of-logical]) + OSSH_CHECK_CFLAG_COMPILE([-fno-strict-aliasing]) + if test "x$use_toolchain_hardening" = "x1"; then + OSSH_CHECK_CFLAG_COMPILE([-mretpoline]) # clang + OSSH_CHECK_LDFLAG_LINK([-Wl,-z,retpolineplt]) + OSSH_CHECK_CFLAG_COMPILE([-D_FORTIFY_SOURCE=2]) + OSSH_CHECK_LDFLAG_LINK([-Wl,-z,relro]) + OSSH_CHECK_LDFLAG_LINK([-Wl,-z,now]) + OSSH_CHECK_LDFLAG_LINK([-Wl,-z,noexecstack]) + # NB. -ftrapv expects certain support functions to be present in + # the compiler library (libgcc or similar) to detect integer operations + # that can overflow. We must check that the result of enabling it + # actually links. The test program compiled/linked includes a number + # of integer operations that should exercise this. + OSSH_CHECK_CFLAG_LINK([-ftrapv]) + # clang 15 seems to have a bug in -fzero-call-used-regs=all. See + # https://bugzilla.mindrot.org/show_bug.cgi?id=3475 and + # https://github.com/llvm/llvm-project/issues/59242 + # clang 17 has a different bug that causes an ICE when using this + # flag at all (https://bugzilla.mindrot.org/show_bug.cgi?id=3629) + case "$CLANG_VER" in + apple-15*) OSSH_CHECK_CFLAG_LINK([-fzero-call-used-regs=used]) ;; + 17*) ;; + *) OSSH_CHECK_CFLAG_LINK([-fzero-call-used-regs=used]) ;; + esac + OSSH_CHECK_CFLAG_COMPILE([-ftrivial-auto-var-init=zero]) + fi + + AC_MSG_CHECKING([if $CC accepts -fno-builtin-memset]) + saved_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS -fno-builtin-memset" + AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <string.h> ]], + [[ char b[10]; memset(b, 0, sizeof(b)); ]])], + [ AC_MSG_RESULT([yes]) ], + [ AC_MSG_RESULT([no]) + CFLAGS="$saved_CFLAGS" ] + ) + + # -fstack-protector-all doesn't always work for some GCC versions + # and/or platforms, so we test if we can. If it's not supported + # on a given platform gcc will emit a warning so we use -Werror. + if test "x$use_stack_protector" = "x1"; then + for t in -fstack-protector-strong -fstack-protector-all \ + -fstack-protector; do + AC_MSG_CHECKING([if $CC supports $t]) + saved_CFLAGS="$CFLAGS" + saved_LDFLAGS="$LDFLAGS" + CFLAGS="$CFLAGS $t -Werror" + LDFLAGS="$LDFLAGS $t -Werror" + AC_LINK_IFELSE( + [AC_LANG_PROGRAM([[ + #include <stdio.h> + int func (int t) {char b[100]; snprintf(b,sizeof b,"%d",t); return t;} + ]], + [[ + char x[256]; + snprintf(x, sizeof(x), "XXX%d", func(1)); + ]])], + [ AC_MSG_RESULT([yes]) + CFLAGS="$saved_CFLAGS $t" + LDFLAGS="$saved_LDFLAGS $t" + AC_MSG_CHECKING([if $t works]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ + #include <stdio.h> + int func (int t) {char b[100]; snprintf(b,sizeof b,"%d",t); return t;} + ]], + [[ + char x[256]; + snprintf(x, sizeof(x), "XXX%d", func(1)); + ]])], + [ AC_MSG_RESULT([yes]) + break ], + [ AC_MSG_RESULT([no]) ], + [ AC_MSG_WARN([cross compiling: cannot test]) + break ] + ) + ], + [ AC_MSG_RESULT([no]) ] + ) + CFLAGS="$saved_CFLAGS" + LDFLAGS="$saved_LDFLAGS" + done + fi + + if test -z "$have_llong_max"; then + # retry LLONG_MAX with -std=gnu99, needed on some Linuxes + unset ac_cv_have_decl_LLONG_MAX + saved_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS -std=gnu99" + AC_CHECK_DECL([LLONG_MAX], + [have_llong_max=1], + [CFLAGS="$saved_CFLAGS"], + [#include <limits.h>] + ) + fi +fi + +AC_MSG_CHECKING([if compiler allows __attribute__ on return types]) +AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM([[ +#include <stdlib.h> +__attribute__((__unused__)) static void foo(void){return;}]], + [[ exit(0); ]])], + [ AC_MSG_RESULT([yes]) ], + [ AC_MSG_RESULT([no]) + AC_DEFINE(NO_ATTRIBUTE_ON_RETURN_TYPE, 1, + [compiler does not accept __attribute__ on return types]) ] +) + +AC_MSG_CHECKING([if compiler allows __attribute__ prototype args]) +AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM([[ +#include <stdlib.h> +typedef void foo(const char *, ...) __attribute__((format(printf, 1, 2)));]], + [[ exit(0); ]])], + [ AC_MSG_RESULT([yes]) ], + [ AC_MSG_RESULT([no]) + AC_DEFINE(NO_ATTRIBUTE_ON_PROTOTYPE_ARGS, 1, + [compiler does not accept __attribute__ on prototype args]) ] +) + +AC_MSG_CHECKING([if compiler supports variable length arrays]) +AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM([[#include <stdlib.h>]], + [[ int i; for (i=0; i<3; i++){int a[i]; a[i-1]=0;} exit(0); ]])], + [ AC_MSG_RESULT([yes]) + AC_DEFINE(VARIABLE_LENGTH_ARRAYS, [1], + [compiler supports variable length arrays]) ], + [ AC_MSG_RESULT([no]) ] +) + +AC_MSG_CHECKING([if compiler accepts variable declarations after code]) +AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM([[#include <stdlib.h>]], + [[ int a; a = 1; int b = 1; exit(a-b); ]])], + [ AC_MSG_RESULT([yes]) + AC_DEFINE(VARIABLE_DECLARATION_AFTER_CODE, [1], + [compiler variable declarations after code]) ], + [ AC_MSG_RESULT([no]) ] +) + +if test "x$no_attrib_nonnull" != "x1" ; then + AC_DEFINE([HAVE_ATTRIBUTE__NONNULL__], [1], [Have attribute nonnull]) +fi + +AC_ARG_WITH([rpath], + [ --without-rpath Disable auto-added -R linker paths], + [ + if test "x$withval" = "xno" ; then + rpath_opt="" + elif test "x$withval" = "xyes" ; then + rpath_opt="-R" + else + rpath_opt="$withval" + fi + ] +) + +# Allow user to specify flags +AC_ARG_WITH([cflags], + [ --with-cflags Specify additional flags to pass to compiler], + [ + if test -n "$withval" && test "x$withval" != "xno" && \ + test "x${withval}" != "xyes"; then + CFLAGS="$CFLAGS $withval" + fi + ] +) + +AC_ARG_WITH([cflags-after], + [ --with-cflags-after Specify additional flags to pass to compiler after configure], + [ + if test -n "$withval" && test "x$withval" != "xno" && \ + test "x${withval}" != "xyes"; then + CFLAGS_AFTER="$withval" + fi + ] +) +AC_ARG_WITH([cppflags], + [ --with-cppflags Specify additional flags to pass to preprocessor] , + [ + if test -n "$withval" && test "x$withval" != "xno" && \ + test "x${withval}" != "xyes"; then + CPPFLAGS="$CPPFLAGS $withval" + fi + ] +) +AC_ARG_WITH([ldflags], + [ --with-ldflags Specify additional flags to pass to linker], + [ + if test -n "$withval" && test "x$withval" != "xno" && \ + test "x${withval}" != "xyes"; then + LDFLAGS="$LDFLAGS $withval" + fi + ] +) +AC_ARG_WITH([ldflags-after], + [ --with-ldflags-after Specify additional flags to pass to linker after configure], + [ + if test -n "$withval" && test "x$withval" != "xno" && \ + test "x${withval}" != "xyes"; then + LDFLAGS_AFTER="$withval" + fi + ] +) +AC_ARG_WITH([libs], + [ --with-libs Specify additional libraries to link with], + [ + if test -n "$withval" && test "x$withval" != "xno" && \ + test "x${withval}" != "xyes"; then + LIBS="$LIBS $withval" + fi + ] +) +AC_ARG_WITH([Werror], + [ --with-Werror Build main code with -Werror], + [ + if test -n "$withval" && test "x$withval" != "xno"; then + werror_flags="-Werror" + if test "x${withval}" != "xyes"; then + werror_flags="$withval" + fi + fi + ] +) + +dnl On some old platforms, sys/stat.h requires sys/types.h, but autoconf-2.71's +dnl AC_CHECK_INCLUDES_DEFAULT checks for them in the opposite order. If we +dnl haven't detected it, recheck. +if test "x$ac_cv_header_sys_stat_h" != "xyes"; then + unset ac_cv_header_sys_stat_h + AC_CHECK_HEADERS([sys/stat.h]) +fi + +AC_CHECK_HEADERS([ \ + blf.h \ + bstring.h \ + crypt.h \ + crypto/sha2.h \ + dirent.h \ + endian.h \ + elf.h \ + err.h \ + features.h \ + fcntl.h \ + floatingpoint.h \ + fnmatch.h \ + getopt.h \ + glob.h \ + ia.h \ + iaf.h \ + ifaddrs.h \ + inttypes.h \ + langinfo.h \ + limits.h \ + locale.h \ + login.h \ + maillock.h \ + ndir.h \ + net/if_tun.h \ + netdb.h \ + netgroup.h \ + pam/pam_appl.h \ + paths.h \ + poll.h \ + pty.h \ + readpassphrase.h \ + rpc/types.h \ + security/pam_appl.h \ + sha2.h \ + shadow.h \ + stddef.h \ + stdint.h \ + string.h \ + strings.h \ + sys/bitypes.h \ + sys/byteorder.h \ + sys/bsdtty.h \ + sys/cdefs.h \ + sys/dir.h \ + sys/file.h \ + sys/mman.h \ + sys/label.h \ + sys/ndir.h \ + sys/param.h \ + sys/poll.h \ + sys/prctl.h \ + sys/procctl.h \ + sys/pstat.h \ + sys/ptrace.h \ + sys/random.h \ + sys/select.h \ + sys/stream.h \ + sys/stropts.h \ + sys/strtio.h \ + sys/statvfs.h \ + sys/sysmacros.h \ + sys/time.h \ + sys/timers.h \ + sys/vfs.h \ + time.h \ + tmpdir.h \ + ttyent.h \ + ucred.h \ + unistd.h \ + usersec.h \ + util.h \ + utime.h \ + utmp.h \ + utmpx.h \ + vis.h \ + wchar.h \ +]) + +# On some platforms (eg SunOS4) sys/audit.h requires sys/[time|types|label.h] +# to be included first. +AC_CHECK_HEADERS([sys/audit.h], [], [], [ +#ifdef HAVE_SYS_TIME_H +# include <sys/time.h> +#endif +#ifdef HAVE_SYS_TYPES_H +# include <sys/types.h> +#endif +#ifdef HAVE_SYS_LABEL_H +# include <sys/label.h> +#endif +]) + +# sys/capsicum.h requires sys/types.h +AC_CHECK_HEADERS([sys/capsicum.h capsicum_helpers.h], [], [], [ +#ifdef HAVE_SYS_TYPES_H +# include <sys/types.h> +#endif +]) + +AC_MSG_CHECKING([for caph_cache_tzdata]) +AC_LINK_IFELSE( + [AC_LANG_PROGRAM([[ #include <capsicum_helpers.h> ]], + [[caph_cache_tzdata();]])], + [ + AC_MSG_RESULT([yes]) + AC_DEFINE([HAVE_CAPH_CACHE_TZDATA], [1], + [Define if you have caph_cache_tzdata]) + ], + [ AC_MSG_RESULT([no]) ] +) + +# net/route.h requires sys/socket.h and sys/types.h. +# sys/sysctl.h also requires sys/param.h +AC_CHECK_HEADERS([net/route.h sys/sysctl.h], [], [], [ +#ifdef HAVE_SYS_TYPES_H +# include <sys/types.h> +#endif +#include <sys/param.h> +#include <sys/socket.h> +]) + +# lastlog.h requires sys/time.h to be included first on Solaris +AC_CHECK_HEADERS([lastlog.h], [], [], [ +#ifdef HAVE_SYS_TIME_H +# include <sys/time.h> +#endif +]) + +# sys/ptms.h requires sys/stream.h to be included first on Solaris +AC_CHECK_HEADERS([sys/ptms.h], [], [], [ +#ifdef HAVE_SYS_STREAM_H +# include <sys/stream.h> +#endif +]) + +# login_cap.h requires sys/types.h on NetBSD +AC_CHECK_HEADERS([login_cap.h], [], [], [ +#include <sys/types.h> +]) + +# older BSDs need sys/param.h before sys/mount.h +AC_CHECK_HEADERS([sys/mount.h], [], [], [ +#include <sys/param.h> +]) + +# Android requires sys/socket.h to be included before sys/un.h +AC_CHECK_HEADERS([sys/un.h], [], [], [ +#include <sys/types.h> +#include <sys/socket.h> +]) + +# Messages for features tested for in target-specific section +SIA_MSG="no" +SPC_MSG="no" +SP_MSG="no" +SPP_MSG="no" + +# Support for Solaris/Illumos privileges (this test is used by both +# the --with-solaris-privs option and --with-sandbox=solaris). +SOLARIS_PRIVS="no" + +# Check for some target-specific stuff +case "$host" in +*-*-aix*) + # Some versions of VAC won't allow macro redefinitions at + # -qlanglevel=ansi, and autoconf 2.60 sometimes insists on using that + # particularly with older versions of vac or xlc. + # It also throws errors about null macro arguments, but these are + # not fatal. + AC_MSG_CHECKING([if compiler allows macro redefinitions]) + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM([[ +#define testmacro foo +#define testmacro bar]], + [[ exit(0); ]])], + [ AC_MSG_RESULT([yes]) ], + [ AC_MSG_RESULT([no]) + CC="`echo $CC | sed 's/-qlanglvl\=ansi//g'`" + CFLAGS="`echo $CFLAGS | sed 's/-qlanglvl\=ansi//g'`" + CPPFLAGS="`echo $CPPFLAGS | sed 's/-qlanglvl\=ansi//g'`" + ] + ) + + AC_MSG_CHECKING([how to specify blibpath for linker ($LD)]) + if (test -z "$blibpath"); then + blibpath="/usr/lib:/lib" + fi + saved_LDFLAGS="$LDFLAGS" + if test "$GCC" = "yes"; then + flags="-Wl,-blibpath: -Wl,-rpath, -blibpath:" + else + flags="-blibpath: -Wl,-blibpath: -Wl,-rpath," + fi + for tryflags in $flags ;do + if (test -z "$blibflags"); then + LDFLAGS="$saved_LDFLAGS $tryflags$blibpath" + AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[]])], + [blibflags=$tryflags], []) + fi + done + if (test -z "$blibflags"); then + AC_MSG_RESULT([not found]) + AC_MSG_ERROR([*** must be able to specify blibpath on AIX - check config.log]) + else + AC_MSG_RESULT([$blibflags]) + fi + LDFLAGS="$saved_LDFLAGS" + dnl Check for authenticate. Might be in libs.a on older AIXes + AC_CHECK_FUNC([authenticate], [AC_DEFINE([WITH_AIXAUTHENTICATE], [1], + [Define if you want to enable AIX4's authenticate function])], + [AC_CHECK_LIB([s], [authenticate], + [ AC_DEFINE([WITH_AIXAUTHENTICATE]) + LIBS="$LIBS -ls" + ]) + ]) + dnl Check for various auth function declarations in headers. + AC_CHECK_DECLS([authenticate, loginrestrictions, loginsuccess, + passwdexpired, setauthdb], , , [#include <usersec.h>]) + dnl Check if loginfailed is declared and takes 4 arguments (AIX >= 5.2) + AC_CHECK_DECLS([loginfailed], + [AC_MSG_CHECKING([if loginfailed takes 4 arguments]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <usersec.h> ]], + [[ (void)loginfailed("user","host","tty",0); ]])], + [AC_MSG_RESULT([yes]) + AC_DEFINE([AIX_LOGINFAILED_4ARG], [1], + [Define if your AIX loginfailed() function + takes 4 arguments (AIX >= 5.2)])], [AC_MSG_RESULT([no]) + ])], + [], + [#include <usersec.h>] + ) + AC_CHECK_FUNCS([getgrset setauthdb]) + AC_CHECK_DECL([F_CLOSEM], + AC_DEFINE([HAVE_FCNTL_CLOSEM], [1], [Use F_CLOSEM fcntl for closefrom]), + [], + [ #include <limits.h> + #include <fcntl.h> ] + ) + check_for_aix_broken_getaddrinfo=1 + AC_DEFINE([SETEUID_BREAKS_SETUID], [1], + [Define if your platform breaks doing a seteuid before a setuid]) + AC_DEFINE([BROKEN_SETREUID], [1], [Define if your setreuid() is broken]) + AC_DEFINE([BROKEN_SETREGID], [1], [Define if your setregid() is broken]) + dnl AIX handles lastlog as part of its login message + AC_DEFINE([DISABLE_LASTLOG], [1], [Define if you don't want to use lastlog]) + AC_DEFINE([LOGIN_NEEDS_UTMPX], [1], + [Some systems need a utmpx entry for /bin/login to work]) + AC_DEFINE([SPT_TYPE], [SPT_REUSEARGV], + [Define to a Set Process Title type if your system is + supported by bsd-setproctitle.c]) + AC_DEFINE([SSHPAM_CHAUTHTOK_NEEDS_RUID], [1], + [AIX 5.2 and 5.3 (and presumably newer) require this]) + AC_DEFINE([PTY_ZEROREAD], [1], [read(1) can return 0 for a non-closed fd]) + AC_DEFINE([PLATFORM_SYS_DIR_UID], 2, [System dirs owned by bin (uid 2)]) + AC_DEFINE([BROKEN_STRNDUP], 1, [strndup broken, see APAR IY61211]) + AC_DEFINE([BROKEN_STRNLEN], 1, [strnlen broken, see APAR IY62551]) + ;; +*-*-android*) + AC_DEFINE([DISABLE_UTMP], [1], [Define if you don't want to use utmp]) + AC_DEFINE([DISABLE_WTMP], [1], [Define if you don't want to use wtmp]) + ;; +*-*-cygwin*) + LIBS="$LIBS /usr/lib/textreadmode.o" + AC_DEFINE([HAVE_CYGWIN], [1], [Define if you are on Cygwin]) + AC_DEFINE([USE_PIPES], [1], [Use PIPES instead of a socketpair()]) + AC_DEFINE([NO_UID_RESTORATION_TEST], [1], + [Define to disable UID restoration test]) + AC_DEFINE([DISABLE_SHADOW], [1], + [Define if you want to disable shadow passwords]) + AC_DEFINE([NO_X11_UNIX_SOCKETS], [1], + [Define if X11 doesn't support AF_UNIX sockets on that system]) + AC_DEFINE([DISABLE_FD_PASSING], [1], + [Define if your platform needs to skip post auth + file descriptor passing]) + AC_DEFINE([SSH_IOBUFSZ], [65535], [Windows is sensitive to read buffer size]) + AC_DEFINE([FILESYSTEM_NO_BACKSLASH], [1], [File names may not contain backslash characters]) + # Cygwin defines optargs, optargs as declspec(dllimport) for historical + # reasons which cause compile warnings, so we disable those warnings. + OSSH_CHECK_CFLAG_COMPILE([-Wno-attributes]) + ;; +*-*-dgux*) + AC_DEFINE([IP_TOS_IS_BROKEN], [1], + [Define if your system choked on IP TOS setting]) + AC_DEFINE([SETEUID_BREAKS_SETUID]) + AC_DEFINE([BROKEN_SETREUID]) + AC_DEFINE([BROKEN_SETREGID]) + ;; +*-*-darwin*) + use_pie=auto + AC_MSG_CHECKING([if we have working getaddrinfo]) + AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <mach-o/dyld.h> +#include <stdlib.h> +int main(void) { if (NSVersionOfRunTimeLibrary("System") >= (60 << 16)) + exit(0); + else + exit(1); +} + ]])], + [AC_MSG_RESULT([working])], + [AC_MSG_RESULT([buggy]) + AC_DEFINE([BROKEN_GETADDRINFO], [1], + [getaddrinfo is broken (if present)]) + ], + [AC_MSG_RESULT([assume it is working])]) + AC_DEFINE([SETEUID_BREAKS_SETUID]) + AC_DEFINE([BROKEN_SETREUID]) + AC_DEFINE([BROKEN_SETREGID]) + AC_DEFINE([BROKEN_GLOB], [1], [OS X glob does not do what we expect]) + AC_DEFINE_UNQUOTED([BIND_8_COMPAT], [1], + [Define if your resolver libs need this for getrrsetbyname]) + AC_DEFINE([SSH_TUN_FREEBSD], [1], [Open tunnel devices the FreeBSD way]) + AC_DEFINE([SSH_TUN_COMPAT_AF], [1], + [Use tunnel device compatibility to OpenBSD]) + AC_DEFINE([SSH_TUN_PREPEND_AF], [1], + [Prepend the address family to IP tunnel traffic]) + m4_pattern_allow([AU_IPv]) + AC_CHECK_DECL([AU_IPv4], [], + AC_DEFINE([AU_IPv4], [0], [System only supports IPv4 audit records]) + [#include <bsm/audit.h>] + AC_DEFINE([LASTLOG_WRITE_PUTUTXLINE], [1], + [Define if pututxline updates lastlog too]) + ) + AC_DEFINE([SPT_TYPE], [SPT_REUSEARGV], + [Define to a Set Process Title type if your system is + supported by bsd-setproctitle.c]) + AC_CHECK_FUNCS([sandbox_init]) + AC_CHECK_HEADERS([sandbox.h]) + AC_CHECK_LIB([sandbox], [sandbox_apply], [ + SSHDLIBS="$SSHDLIBS -lsandbox" + ]) + # proc_pidinfo()-based closefrom() replacement. + AC_CHECK_HEADERS([libproc.h]) + AC_CHECK_FUNCS([proc_pidinfo]) + # poll(2) is broken for character-special devices (at least). + # cf. Apple bug 3710161 (not public, but searchable) + AC_DEFINE([BROKEN_POLL], [1], + [System poll(2) implementation is broken]) + ;; +*-*-dragonfly*) + SSHDLIBS="$SSHDLIBS" + TEST_MALLOC_OPTIONS="AFGJPRX" + ;; +*-*-haiku*) + LIBS="$LIBS -lbsd " + CFLAGS="$CFLAGS -D_BSD_SOURCE" + AC_CHECK_LIB([network], [socket]) + AC_DEFINE([HAVE_U_INT64_T]) + AC_DEFINE([DISABLE_UTMPX], [1], [no utmpx]) + MANTYPE=man + ;; +*-*-hpux*) + # first we define all of the options common to all HP-UX releases + CPPFLAGS="$CPPFLAGS -D_HPUX_SOURCE -D_XOPEN_SOURCE -D_XOPEN_SOURCE_EXTENDED=1" + IPADDR_IN_DISPLAY=yes + AC_DEFINE([USE_PIPES]) + AC_DEFINE([LOGIN_NEEDS_UTMPX]) + AC_DEFINE([LOCKED_PASSWD_STRING], ["*"], + [String used in /etc/passwd to denote locked account]) + AC_DEFINE([SPT_TYPE], [SPT_PSTAT]) + AC_DEFINE([PLATFORM_SYS_DIR_UID], 2, [System dirs owned by bin (uid 2)]) + maildir="/var/mail" + LIBS="$LIBS -lsec" + AC_CHECK_LIB([xnet], [t_error], , + [AC_MSG_ERROR([*** -lxnet needed on HP-UX - check config.log ***])]) + + # next, we define all of the options specific to major releases + case "$host" in + *-*-hpux10*) + if test -z "$GCC"; then + CFLAGS="$CFLAGS -Ae" + fi + AC_DEFINE([BROKEN_GETLINE], [1], [getline is not what we expect]) + ;; + *-*-hpux11*) + AC_DEFINE([PAM_SUN_CODEBASE], [1], + [Define if you are using Solaris-derived PAM which + passes pam_messages to the conversation function + with an extra level of indirection]) + AC_DEFINE([DISABLE_UTMP], [1], + [Define if you don't want to use utmp]) + AC_DEFINE([USE_BTMP], [1], [Use btmp to log bad logins]) + check_for_hpux_broken_getaddrinfo=1 + check_for_conflicting_getspnam=1 + ;; + esac + + # lastly, we define options specific to minor releases + case "$host" in + *-*-hpux10.26) + AC_DEFINE([HAVE_SECUREWARE], [1], + [Define if you have SecureWare-based + protected password database]) + disable_ptmx_check=yes + LIBS="$LIBS -lsecpw" + ;; + esac + ;; +*-*-irix5*) + PATH="$PATH:/usr/etc" + AC_DEFINE([BROKEN_INET_NTOA], [1], + [Define if you system's inet_ntoa is busted + (e.g. Irix gcc issue)]) + AC_DEFINE([SETEUID_BREAKS_SETUID]) + AC_DEFINE([BROKEN_SETREUID]) + AC_DEFINE([BROKEN_SETREGID]) + AC_DEFINE([WITH_ABBREV_NO_TTY], [1], + [Define if you shouldn't strip 'tty' from your + ttyname in [uw]tmp]) + AC_DEFINE([LOCKED_PASSWD_STRING], ["*LK*"]) + ;; +*-*-irix6*) + PATH="$PATH:/usr/etc" + AC_DEFINE([WITH_IRIX_ARRAY], [1], + [Define if you have/want arrays + (cluster-wide session management, not C arrays)]) + AC_DEFINE([WITH_IRIX_PROJECT], [1], + [Define if you want IRIX project management]) + AC_DEFINE([WITH_IRIX_AUDIT], [1], + [Define if you want IRIX audit trails]) + AC_CHECK_FUNC([jlimit_startjob], [AC_DEFINE([WITH_IRIX_JOBS], [1], + [Define if you want IRIX kernel jobs])]) + AC_DEFINE([BROKEN_INET_NTOA]) + AC_DEFINE([SETEUID_BREAKS_SETUID]) + AC_DEFINE([BROKEN_SETREUID]) + AC_DEFINE([BROKEN_SETREGID]) + AC_DEFINE([BROKEN_UPDWTMPX], [1], [updwtmpx is broken (if present)]) + AC_DEFINE([WITH_ABBREV_NO_TTY]) + AC_DEFINE([LOCKED_PASSWD_STRING], ["*LK*"]) + ;; +*-*-k*bsd*-gnu | *-*-kopensolaris*-gnu) + AC_DEFINE([PAM_TTY_KLUDGE]) + AC_DEFINE([LOCKED_PASSWD_PREFIX], ["!"]) + AC_DEFINE([SPT_TYPE], [SPT_REUSEARGV]) + AC_DEFINE([_PATH_BTMP], ["/var/log/btmp"], [log for bad login attempts]) + AC_DEFINE([USE_BTMP], [1], [Use btmp to log bad logins]) + ;; +*-*-linux*) + no_dev_ptmx=1 + use_pie=auto + check_for_openpty_ctty_bug=1 + dnl Target SUSv3/POSIX.1-2001 plus BSD specifics. + dnl _DEFAULT_SOURCE is the new name for _BSD_SOURCE + dnl _GNU_SOURCE is needed for setres*id prototypes. + CPPFLAGS="$CPPFLAGS -D_XOPEN_SOURCE=600 -D_BSD_SOURCE -D_DEFAULT_SOURCE -D_GNU_SOURCE" + AC_DEFINE([BROKEN_CLOSEFROM], [1], [broken in chroots on older kernels]) + AC_DEFINE([PAM_TTY_KLUDGE], [1], + [Work around problematic Linux PAM modules handling of PAM_TTY]) + AC_DEFINE([LOCKED_PASSWD_PREFIX], ["!"], + [String used in /etc/passwd to denote locked account]) + AC_DEFINE([SPT_TYPE], [SPT_REUSEARGV]) + AC_DEFINE([LINK_OPNOTSUPP_ERRNO], [EPERM], + [Define to whatever link() returns for "not supported" + if it doesn't return EOPNOTSUPP.]) + AC_DEFINE([_PATH_BTMP], ["/var/log/btmp"], [log for bad login attempts]) + AC_DEFINE([USE_BTMP]) + AC_DEFINE([LINUX_OOM_ADJUST], [1], [Adjust Linux out-of-memory killer]) + inet6_default_4in6=yes + case `uname -r` in + 1.*|2.0.*) + AC_DEFINE([BROKEN_CMSG_TYPE], [1], + [Define if cmsg_type is not passed correctly]) + ;; + esac + # tun(4) forwarding compat code + AC_CHECK_HEADERS([linux/if_tun.h]) + if test "x$ac_cv_header_linux_if_tun_h" = "xyes" ; then + AC_DEFINE([SSH_TUN_LINUX], [1], + [Open tunnel devices the Linux tun/tap way]) + AC_DEFINE([SSH_TUN_COMPAT_AF], [1], + [Use tunnel device compatibility to OpenBSD]) + AC_DEFINE([SSH_TUN_PREPEND_AF], [1], + [Prepend the address family to IP tunnel traffic]) + fi + AC_CHECK_HEADER([linux/if.h], + AC_DEFINE([SYS_RDOMAIN_LINUX], [1], + [Support routing domains using Linux VRF]), [], [ +#ifdef HAVE_SYS_TYPES_H +# include <sys/types.h> +#endif + ]) + AC_CHECK_HEADERS([linux/seccomp.h linux/filter.h linux/audit.h], [], + [], [#include <linux/types.h>]) + # Obtain MIPS ABI + case "$host" in + mips*) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#if _MIPS_SIM != _ABIO32 +#error +#endif + ]])],[mips_abi="o32"],[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#if _MIPS_SIM != _ABIN32 +#error +#endif + ]])],[mips_abi="n32"],[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#if _MIPS_SIM != _ABI64 +#error +#endif + ]])],[mips_abi="n64"],[AC_MSG_ERROR([unknown MIPS ABI]) + ]) + ]) + ]) + ;; + esac + AC_MSG_CHECKING([for seccomp architecture]) + seccomp_audit_arch= + case "$host" in + x86_64-*) + seccomp_audit_arch=AUDIT_ARCH_X86_64 + ;; + i*86-*) + seccomp_audit_arch=AUDIT_ARCH_I386 + ;; + arm*-*) + seccomp_audit_arch=AUDIT_ARCH_ARM + ;; + aarch64*-*) + seccomp_audit_arch=AUDIT_ARCH_AARCH64 + ;; + s390x-*) + seccomp_audit_arch=AUDIT_ARCH_S390X + ;; + s390-*) + seccomp_audit_arch=AUDIT_ARCH_S390 + ;; + powerpc-*) + seccomp_audit_arch=AUDIT_ARCH_PPC + ;; + powerpc64-*) + seccomp_audit_arch=AUDIT_ARCH_PPC64 + ;; + powerpc64le-*) + seccomp_audit_arch=AUDIT_ARCH_PPC64LE + ;; + mips-*) + seccomp_audit_arch=AUDIT_ARCH_MIPS + ;; + mipsel-*) + seccomp_audit_arch=AUDIT_ARCH_MIPSEL + ;; + mips64-*) + case "$mips_abi" in + "n32") + seccomp_audit_arch=AUDIT_ARCH_MIPS64N32 + ;; + "n64") + seccomp_audit_arch=AUDIT_ARCH_MIPS64 + ;; + esac + ;; + mips64el-*) + case "$mips_abi" in + "n32") + seccomp_audit_arch=AUDIT_ARCH_MIPSEL64N32 + ;; + "n64") + seccomp_audit_arch=AUDIT_ARCH_MIPSEL64 + ;; + esac + ;; + riscv64-*) + seccomp_audit_arch=AUDIT_ARCH_RISCV64 + ;; + esac + if test "x$seccomp_audit_arch" != "x" ; then + AC_MSG_RESULT(["$seccomp_audit_arch"]) + AC_DEFINE_UNQUOTED([SECCOMP_AUDIT_ARCH], [$seccomp_audit_arch], + [Specify the system call convention in use]) + else + AC_MSG_RESULT([architecture not supported]) + fi + ;; +*-*-minix) + AC_DEFINE([SETEUID_BREAKS_SETUID]) + # poll(2) seems to choke on /dev/null; "Bad file descriptor" + AC_DEFINE([BROKEN_POLL], [1], + [System poll(2) implementation is broken]) + ;; +mips-sony-bsd|mips-sony-newsos4) + AC_DEFINE([NEED_SETPGRP], [1], [Need setpgrp to acquire controlling tty]) + SONY=1 + ;; +*-*-netbsd*) + if test "x$withval" != "xno" ; then + rpath_opt="-R" + fi + CPPFLAGS="$CPPFLAGS -D_OPENBSD_SOURCE" + AC_DEFINE([SSH_TUN_FREEBSD], [1], [Open tunnel devices the FreeBSD way]) + AC_CHECK_HEADER([net/if_tap.h], , + AC_DEFINE([SSH_TUN_NO_L2], [1], [No layer 2 tunnel support])) + AC_DEFINE([SSH_TUN_PREPEND_AF], [1], + [Prepend the address family to IP tunnel traffic]) + TEST_MALLOC_OPTIONS="AJRX" + AC_DEFINE([BROKEN_READ_COMPARISON], [1], + [NetBSD read function is sometimes redirected, breaking atomicio comparisons against it]) + ;; +*-*-freebsd*) + AC_DEFINE([LOCKED_PASSWD_PREFIX], ["*LOCKED*"], [Account locked with pw(1)]) + AC_DEFINE([SSH_TUN_FREEBSD], [1], [Open tunnel devices the FreeBSD way]) + AC_CHECK_HEADER([net/if_tap.h], , + AC_DEFINE([SSH_TUN_NO_L2], [1], [No layer 2 tunnel support])) + AC_DEFINE([BROKEN_GLOB], [1], [FreeBSD glob does not do what we need]) + TEST_MALLOC_OPTIONS="AJRX" + # Preauth crypto occasionally uses file descriptors for crypto offload + # and will crash if they cannot be opened. + AC_DEFINE([SANDBOX_SKIP_RLIMIT_NOFILE], [1], + [define if setrlimit RLIMIT_NOFILE breaks things]) + case "$host" in + *-*-freebsd9.*|*-*-freebsd10.*) + # Capsicum on 9 and 10 do not allow ppoll() so don't auto-enable. + disable_capsicum=yes + esac + ;; +*-*-bsdi*) + AC_DEFINE([SETEUID_BREAKS_SETUID]) + AC_DEFINE([BROKEN_SETREUID]) + AC_DEFINE([BROKEN_SETREGID]) + ;; +*-next-*) + conf_lastlog_location="/usr/adm/lastlog" + conf_utmp_location=/etc/utmp + conf_wtmp_location=/usr/adm/wtmp + maildir=/usr/spool/mail + AC_DEFINE([HAVE_NEXT], [1], [Define if you are on NeXT]) + AC_DEFINE([USE_PIPES]) + AC_DEFINE([BROKEN_SAVED_UIDS], [1], [Needed for NeXT]) + ;; +*-*-openbsd*) + use_pie=auto + AC_DEFINE([HAVE_ATTRIBUTE__SENTINEL__], [1], [OpenBSD's gcc has sentinel]) + AC_DEFINE([HAVE_ATTRIBUTE__BOUNDED__], [1], [OpenBSD's gcc has bounded]) + AC_DEFINE([SSH_TUN_OPENBSD], [1], [Open tunnel devices the OpenBSD way]) + AC_DEFINE([SYSLOG_R_SAFE_IN_SIGHAND], [1], + [syslog_r function is safe to use in in a signal handler]) + TEST_MALLOC_OPTIONS="AFGJPRX" + ;; +*-*-solaris*) + if test "x$withval" != "xno" ; then + rpath_opt="-R" + fi + AC_DEFINE([PAM_SUN_CODEBASE]) + AC_DEFINE([LOGIN_NEEDS_UTMPX]) + AC_DEFINE([PAM_TTY_KLUDGE]) + AC_DEFINE([SSHPAM_CHAUTHTOK_NEEDS_RUID], [1], + [Define if pam_chauthtok wants real uid set + to the unpriv'ed user]) + AC_DEFINE([LOCKED_PASSWD_STRING], ["*LK*"]) + # Pushing STREAMS modules will cause sshd to acquire a controlling tty. + AC_DEFINE([SSHD_ACQUIRES_CTTY], [1], + [Define if sshd somehow reacquires a controlling TTY + after setsid()]) + AC_DEFINE([PASSWD_NEEDS_USERNAME], [1], [must supply username to passwd + in case the name is longer than 8 chars]) + AC_DEFINE([BROKEN_TCGETATTR_ICANON], [1], [tcgetattr with ICANON may hang]) + external_path_file=/etc/default/login + # hardwire lastlog location (can't detect it on some versions) + conf_lastlog_location="/var/adm/lastlog" + AC_MSG_CHECKING([for obsolete utmp and wtmp in solaris2.x]) + sol2ver=`echo "$host"| sed -e 's/.*[[0-9]]\.//'` + if test "$sol2ver" -ge 8; then + AC_MSG_RESULT([yes]) + AC_DEFINE([DISABLE_UTMP]) + AC_DEFINE([DISABLE_WTMP], [1], + [Define if you don't want to use wtmp]) + else + AC_MSG_RESULT([no]) + fi + AC_CHECK_FUNCS([setpflags]) + AC_CHECK_FUNCS([setppriv]) + AC_CHECK_FUNCS([priv_basicset]) + AC_CHECK_HEADERS([priv.h]) + AC_ARG_WITH([solaris-contracts], + [ --with-solaris-contracts Enable Solaris process contracts (experimental)], + [ + AC_CHECK_LIB([contract], [ct_tmpl_activate], + [ AC_DEFINE([USE_SOLARIS_PROCESS_CONTRACTS], [1], + [Define if you have Solaris process contracts]) + LIBS="$LIBS -lcontract" + SPC_MSG="yes" ], ) + ], + ) + AC_ARG_WITH([solaris-projects], + [ --with-solaris-projects Enable Solaris projects (experimental)], + [ + AC_CHECK_LIB([project], [setproject], + [ AC_DEFINE([USE_SOLARIS_PROJECTS], [1], + [Define if you have Solaris projects]) + LIBS="$LIBS -lproject" + SP_MSG="yes" ], ) + ], + ) + AC_ARG_WITH([solaris-privs], + [ --with-solaris-privs Enable Solaris/Illumos privileges (experimental)], + [ + AC_MSG_CHECKING([for Solaris/Illumos privilege support]) + if test "x$ac_cv_func_setppriv" = "xyes" -a \ + "x$ac_cv_header_priv_h" = "xyes" ; then + SOLARIS_PRIVS=yes + AC_MSG_RESULT([found]) + AC_DEFINE([NO_UID_RESTORATION_TEST], [1], + [Define to disable UID restoration test]) + AC_DEFINE([USE_SOLARIS_PRIVS], [1], + [Define if you have Solaris privileges]) + SPP_MSG="yes" + else + AC_MSG_RESULT([not found]) + AC_MSG_ERROR([*** must have support for Solaris privileges to use --with-solaris-privs]) + fi + ], + ) + TEST_SHELL=$SHELL # let configure find us a capable shell + ;; +*-*-sunos4*) + CPPFLAGS="$CPPFLAGS -DSUNOS4" + AC_CHECK_FUNCS([getpwanam]) + AC_DEFINE([PAM_SUN_CODEBASE]) + conf_utmp_location=/etc/utmp + conf_wtmp_location=/var/adm/wtmp + conf_lastlog_location=/var/adm/lastlog + AC_DEFINE([USE_PIPES]) + AC_DEFINE([DISABLE_UTMPX], [1], [no utmpx]) + ;; +*-ncr-sysv*) + LIBS="$LIBS -lc89" + AC_DEFINE([USE_PIPES]) + AC_DEFINE([SSHD_ACQUIRES_CTTY]) + AC_DEFINE([SETEUID_BREAKS_SETUID]) + AC_DEFINE([BROKEN_SETREUID]) + AC_DEFINE([BROKEN_SETREGID]) + ;; +*-sni-sysv*) + # /usr/ucblib MUST NOT be searched on ReliantUNIX + AC_CHECK_LIB([dl], [dlsym], ,) + # -lresolv needs to be at the end of LIBS or DNS lookups break + AC_CHECK_LIB([resolv], [res_query], [ LIBS="$LIBS -lresolv" ]) + IPADDR_IN_DISPLAY=yes + AC_DEFINE([USE_PIPES]) + AC_DEFINE([IP_TOS_IS_BROKEN]) + AC_DEFINE([SETEUID_BREAKS_SETUID]) + AC_DEFINE([BROKEN_SETREUID]) + AC_DEFINE([BROKEN_SETREGID]) + AC_DEFINE([SSHD_ACQUIRES_CTTY]) + external_path_file=/etc/default/login + # /usr/ucblib/libucb.a no longer needed on ReliantUNIX + # Attention: always take care to bind libsocket and libnsl before libc, + # otherwise you will find lots of "SIOCGPGRP errno 22" on syslog + ;; +# UnixWare 1.x, UnixWare 2.x, and others based on code from Univel. +*-*-sysv4.2*) + AC_DEFINE([USE_PIPES]) + AC_DEFINE([SETEUID_BREAKS_SETUID]) + AC_DEFINE([BROKEN_SETREUID]) + AC_DEFINE([BROKEN_SETREGID]) + AC_DEFINE([PASSWD_NEEDS_USERNAME], [1], [must supply username to passwd]) + AC_DEFINE([LOCKED_PASSWD_STRING], ["*LK*"]) + TEST_SHELL=$SHELL # let configure find us a capable shell + ;; +# UnixWare 7.x, OpenUNIX 8 +*-*-sysv5*) + CPPFLAGS="$CPPFLAGS -Dvsnprintf=_xvsnprintf -Dsnprintf=_xsnprintf" + AC_DEFINE([UNIXWARE_LONG_PASSWORDS], [1], [Support passwords > 8 chars]) + AC_DEFINE([USE_PIPES]) + AC_DEFINE([SETEUID_BREAKS_SETUID]) + AC_DEFINE([BROKEN_GETADDRINFO]) + AC_DEFINE([BROKEN_SETREUID]) + AC_DEFINE([BROKEN_SETREGID]) + AC_DEFINE([PASSWD_NEEDS_USERNAME]) + AC_DEFINE([BROKEN_TCGETATTR_ICANON]) + TEST_SHELL=$SHELL # let configure find us a capable shell + case "$host" in + *-*-sysv5SCO_SV*) # SCO OpenServer 6.x + maildir=/var/spool/mail + AC_DEFINE([BROKEN_UPDWTMPX]) + AC_CHECK_LIB([prot], [getluid], [ LIBS="$LIBS -lprot" + AC_CHECK_FUNCS([getluid setluid], , , [-lprot]) + ], , ) + ;; + *) AC_DEFINE([LOCKED_PASSWD_STRING], ["*LK*"]) + ;; + esac + ;; +*-*-sysv*) + ;; +# SCO UNIX and OEM versions of SCO UNIX +*-*-sco3.2v4*) + AC_MSG_ERROR("This Platform is no longer supported.") + ;; +# SCO OpenServer 5.x +*-*-sco3.2v5*) + if test -z "$GCC"; then + CFLAGS="$CFLAGS -belf" + fi + LIBS="$LIBS -lprot -lx -ltinfo -lm" + no_dev_ptmx=1 + AC_DEFINE([USE_PIPES]) + AC_DEFINE([HAVE_SECUREWARE]) + AC_DEFINE([DISABLE_SHADOW]) + AC_DEFINE([DISABLE_FD_PASSING]) + AC_DEFINE([SETEUID_BREAKS_SETUID]) + AC_DEFINE([BROKEN_GETADDRINFO]) + AC_DEFINE([BROKEN_SETREUID]) + AC_DEFINE([BROKEN_SETREGID]) + AC_DEFINE([WITH_ABBREV_NO_TTY]) + AC_DEFINE([BROKEN_UPDWTMPX]) + AC_DEFINE([PASSWD_NEEDS_USERNAME]) + AC_CHECK_FUNCS([getluid setluid]) + MANTYPE=man + TEST_SHELL=$SHELL # let configure find us a capable shell + SKIP_DISABLE_LASTLOG_DEFINE=yes + ;; +*-dec-osf*) + AC_MSG_CHECKING([for Digital Unix SIA]) + no_osfsia="" + AC_ARG_WITH([osfsia], + [ --with-osfsia Enable Digital Unix SIA], + [ + if test "x$withval" = "xno" ; then + AC_MSG_RESULT([disabled]) + no_osfsia=1 + fi + ], + ) + if test -z "$no_osfsia" ; then + if test -f /etc/sia/matrix.conf; then + AC_MSG_RESULT([yes]) + AC_DEFINE([HAVE_OSF_SIA], [1], + [Define if you have Digital Unix Security + Integration Architecture]) + AC_DEFINE([DISABLE_LOGIN], [1], + [Define if you don't want to use your + system's login() call]) + AC_DEFINE([DISABLE_FD_PASSING]) + LIBS="$LIBS -lsecurity -ldb -lm -laud" + SIA_MSG="yes" + else + AC_MSG_RESULT([no]) + AC_DEFINE([LOCKED_PASSWD_SUBSTR], ["Nologin"], + [String used in /etc/passwd to denote locked account]) + fi + fi + AC_DEFINE([BROKEN_GETADDRINFO]) + AC_DEFINE([SETEUID_BREAKS_SETUID]) + AC_DEFINE([BROKEN_SETREUID]) + AC_DEFINE([BROKEN_SETREGID]) + AC_DEFINE([BROKEN_READV_COMPARISON], [1], [Can't do comparisons on readv]) + ;; + +*-*-nto-qnx*) + AC_DEFINE([USE_PIPES]) + AC_DEFINE([NO_X11_UNIX_SOCKETS]) + AC_DEFINE([DISABLE_LASTLOG]) + AC_DEFINE([SSHD_ACQUIRES_CTTY]) + AC_DEFINE([BROKEN_SHADOW_EXPIRE], [1], [QNX shadow support is broken]) + enable_etc_default_login=no # has incompatible /etc/default/login + case "$host" in + *-*-nto-qnx6*) + AC_DEFINE([DISABLE_FD_PASSING]) + ;; + esac + ;; + +*-*-ultrix*) + AC_DEFINE([BROKEN_GETGROUPS], [1], [getgroups(0,NULL) will return -1]) + AC_DEFINE([NEED_SETPGRP], [1], [Need setpgrp to for controlling tty]) + AC_DEFINE([HAVE_SYS_SYSLOG_H], [1], [Force use of sys/syslog.h on Ultrix]) + AC_DEFINE([DISABLE_UTMPX], [1], [Disable utmpx]) + # DISABLE_FD_PASSING so that we call setpgrp as root, otherwise we + # don't get a controlling tty. + AC_DEFINE([DISABLE_FD_PASSING], [1], [Need to call setpgrp as root]) + # On Ultrix some headers are not protected against multiple includes, + # so we create wrappers and put it where the compiler will find it. + AC_MSG_WARN([creating compat wrappers for headers]) + mkdir -p netinet + for header in netinet/ip.h netdb.h resolv.h; do + name=`echo $header | tr 'a-z/.' 'A-Z__'` + cat >$header <<EOD +#ifndef _SSH_COMPAT_${name} +#define _SSH_COMPAT_${name} +#include "/usr/include/${header}" +#endif +EOD + done + ;; + +*-*-lynxos) + CFLAGS="$CFLAGS -D__NO_INCLUDE_WARN__" + AC_DEFINE([BROKEN_SETVBUF], [1], + [LynxOS has broken setvbuf() implementation]) + ;; +esac + +AC_MSG_CHECKING([compiler and flags for sanity]) +AC_RUN_IFELSE([AC_LANG_PROGRAM([[ #include <stdlib.h> ]], [[ exit(0); ]])], + [ AC_MSG_RESULT([yes]) ], + [ + AC_MSG_RESULT([no]) + AC_MSG_ERROR([*** compiler cannot create working executables, check config.log ***]) + ], + [ AC_MSG_WARN([cross compiling: not checking compiler sanity]) ] +) + +dnl Checks for header files. +# Checks for libraries. +AC_CHECK_FUNC([setsockopt], , [AC_CHECK_LIB([socket], [setsockopt])]) + +dnl IRIX and Solaris 2.5.1 have dirname() in libgen +AC_CHECK_FUNCS([dirname], [AC_CHECK_HEADERS([libgen.h])] , [ + AC_CHECK_LIB([gen], [dirname], [ + AC_CACHE_CHECK([for broken dirname], + ac_cv_have_broken_dirname, [ + save_LIBS="$LIBS" + LIBS="$LIBS -lgen" + AC_RUN_IFELSE( + [AC_LANG_SOURCE([[ +#include <libgen.h> +#include <string.h> +#include <stdlib.h> + +int main(int argc, char **argv) { + char *s, buf[32]; + + strncpy(buf,"/etc", 32); + s = dirname(buf); + if (!s || strncmp(s, "/", 32) != 0) { + exit(1); + } else { + exit(0); + } +} + ]])], + [ ac_cv_have_broken_dirname="no" ], + [ ac_cv_have_broken_dirname="yes" ], + [ ac_cv_have_broken_dirname="no" ], + ) + LIBS="$save_LIBS" + ]) + if test "x$ac_cv_have_broken_dirname" = "xno" ; then + LIBS="$LIBS -lgen" + AC_DEFINE([HAVE_DIRNAME]) + AC_CHECK_HEADERS([libgen.h]) + fi + ]) +]) + +AC_CHECK_FUNC([getspnam], , + [AC_CHECK_LIB([gen], [getspnam], [LIBS="$LIBS -lgen"])]) +AC_SEARCH_LIBS([basename], [gen], [AC_DEFINE([HAVE_BASENAME], [1], + [Define if you have the basename function.])]) + +dnl zlib defaults to enabled +zlib=yes +AC_ARG_WITH([zlib], + [ --with-zlib=PATH Use zlib in PATH], + [ if test "x$withval" = "xno" ; then + zlib=no + elif test "x$withval" != "xyes"; then + if test -d "$withval/lib"; then + if test -n "${rpath_opt}"; then + LDFLAGS="-L${withval}/lib ${rpath_opt}${withval}/lib ${LDFLAGS}" + else + LDFLAGS="-L${withval}/lib ${LDFLAGS}" + fi + else + if test -n "${rpath_opt}"; then + LDFLAGS="-L${withval} ${rpath_opt}${withval} ${LDFLAGS}" + else + LDFLAGS="-L${withval} ${LDFLAGS}" + fi + fi + if test -d "$withval/include"; then + CPPFLAGS="-I${withval}/include ${CPPFLAGS}" + else + CPPFLAGS="-I${withval} ${CPPFLAGS}" + fi + fi ] +) + +# These libraries are needed for anything that links in the channel code. +CHANNELLIBS="" +AC_MSG_CHECKING([for zlib]) +if test "x${zlib}" = "xno"; then + AC_MSG_RESULT([no]) +else + saved_LIBS="$LIBS" + CHANNELLIBS="$CHANNELLIBS -lz" + AC_MSG_RESULT([yes]) + AC_DEFINE([WITH_ZLIB], [1], [Enable zlib]) + AC_CHECK_HEADER([zlib.h], ,[AC_MSG_ERROR([*** zlib.h missing - please install first or check config.log ***])]) + AC_CHECK_LIB([z], [deflate], [], + [ + saved_CPPFLAGS="$CPPFLAGS" + saved_LDFLAGS="$LDFLAGS" + dnl Check default zlib install dir + if test -n "${rpath_opt}"; then + LDFLAGS="-L/usr/local/lib ${rpath_opt}/usr/local/lib ${saved_LDFLAGS}" + else + LDFLAGS="-L/usr/local/lib ${saved_LDFLAGS}" + fi + CPPFLAGS="-I/usr/local/include ${saved_CPPFLAGS}" + AC_TRY_LINK_FUNC([deflate], [AC_DEFINE([HAVE_LIBZ])], + [ + AC_MSG_ERROR([*** zlib missing - please install first or check config.log ***]) + ] + ) + ] + ) + + AC_ARG_WITH([zlib-version-check], + [ --without-zlib-version-check Disable zlib version check], + [ if test "x$withval" = "xno" ; then + zlib_check_nonfatal=1 + fi + ] + ) + + AC_MSG_CHECKING([for possibly buggy zlib]) + AC_RUN_IFELSE([AC_LANG_PROGRAM([[ +#include <stdio.h> +#include <stdlib.h> +#include <zlib.h> + ]], + [[ + int a=0, b=0, c=0, d=0, n, v; + n = sscanf(ZLIB_VERSION, "%d.%d.%d.%d", &a, &b, &c, &d); + if (n < 1) + exit(1); + v = a*1000000 + b*10000 + c*100 + d; + fprintf(stderr, "found zlib version %s (%d)\n", ZLIB_VERSION, v); + + /* 1.1.4 is OK */ + if (a == 1 && b == 1 && c >= 4) + exit(0); + + /* 1.2.3 and up are OK */ + if (v >= 1020300) + exit(0); + + exit(2); + ]])], + AC_MSG_RESULT([no]), + [ AC_MSG_RESULT([yes]) + if test -z "$zlib_check_nonfatal" ; then + AC_MSG_ERROR([*** zlib too old - check config.log *** +Your reported zlib version has known security problems. It's possible your +vendor has fixed these problems without changing the version number. If you +are sure this is the case, you can disable the check by running +"./configure --without-zlib-version-check". +If you are in doubt, upgrade zlib to version 1.2.3 or greater. +See http://www.gzip.org/zlib/ for details.]) + else + AC_MSG_WARN([zlib version may have security problems]) + fi + ], + [ AC_MSG_WARN([cross compiling: not checking zlib version]) ] + ) + LIBS="$saved_LIBS" +fi + +dnl UnixWare 2.x +AC_CHECK_FUNC([strcasecmp], + [], [ AC_CHECK_LIB([resolv], [strcasecmp], [LIBS="$LIBS -lresolv"]) ] +) +AC_CHECK_FUNCS([utimes], + [], [ AC_CHECK_LIB([c89], [utimes], [AC_DEFINE([HAVE_UTIMES]) + LIBS="$LIBS -lc89"]) ] +) + +dnl Checks for libutil functions +AC_CHECK_HEADERS([bsd/libutil.h libutil.h]) +AC_SEARCH_LIBS([fmt_scaled], [util bsd]) +AC_SEARCH_LIBS([scan_scaled], [util bsd]) +AC_SEARCH_LIBS([login], [util bsd]) +AC_SEARCH_LIBS([logout], [util bsd]) +AC_SEARCH_LIBS([logwtmp], [util bsd]) +AC_SEARCH_LIBS([openpty], [util bsd]) +AC_SEARCH_LIBS([updwtmp], [util bsd]) +AC_CHECK_FUNCS([fmt_scaled scan_scaled login logout openpty updwtmp logwtmp]) + +# On some platforms, inet_ntop and gethostbyname may be found in libresolv +# or libnsl. +AC_SEARCH_LIBS([inet_ntop], [resolv nsl]) +AC_SEARCH_LIBS([gethostbyname], [resolv nsl]) + +# Some Linux distribtions ship the BSD libc hashing functions in +# separate libraries. +AC_SEARCH_LIBS([SHA256Update], [md bsd]) + +# "Particular Function Checks" +# see https://www.gnu.org/software/autoconf/manual/autoconf-2.69/html_node/Particular-Functions.html +AC_FUNC_STRFTIME +AC_FUNC_MALLOC +AC_FUNC_REALLOC +# autoconf doesn't have AC_FUNC_CALLOC so fake it if malloc returns NULL; +AC_MSG_CHECKING([if calloc(0, N) returns non-null]) +AC_RUN_IFELSE( + [AC_LANG_PROGRAM( + [[ #include <stdlib.h> ]], + [[ void *p = calloc(0, 1); exit(p == NULL); ]] + )], + [ func_calloc_0_nonnull=yes ], + [ func_calloc_0_nonnull=no ], + [ AC_MSG_WARN([cross compiling: assuming same as malloc]) + func_calloc_0_nonnull="$ac_cv_func_malloc_0_nonnull"] +) +AC_MSG_RESULT([$func_calloc_0_nonnull]) + +if test "x$func_calloc_0_nonnull" = "xyes"; then + AC_DEFINE(HAVE_CALLOC, 1, [calloc(0, x) returns non-null]) +else + AC_DEFINE(HAVE_CALLOC, 0, [calloc(0, x) returns NULL]) + AC_DEFINE(calloc, rpl_calloc, + [Define to rpl_calloc if the replacement function should be used.]) +fi + +# Check for ALTDIRFUNC glob() extension +AC_MSG_CHECKING([for GLOB_ALTDIRFUNC support]) +AC_EGREP_CPP([FOUNDIT], + [ + #include <glob.h> + #ifdef GLOB_ALTDIRFUNC + FOUNDIT + #endif + ], + [ + AC_DEFINE([GLOB_HAS_ALTDIRFUNC], [1], + [Define if your system glob() function has + the GLOB_ALTDIRFUNC extension]) + AC_MSG_RESULT([yes]) + ], + [ + AC_MSG_RESULT([no]) + ] +) + +# Check for g.gl_matchc glob() extension +AC_MSG_CHECKING([for gl_matchc field in glob_t]) +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <glob.h> ]], + [[ glob_t g; g.gl_matchc = 1; ]])], + [ + AC_DEFINE([GLOB_HAS_GL_MATCHC], [1], + [Define if your system glob() function has + gl_matchc options in glob_t]) + AC_MSG_RESULT([yes]) + ], [ + AC_MSG_RESULT([no]) +]) + +# Check for g.gl_statv glob() extension +AC_MSG_CHECKING([for gl_statv and GLOB_KEEPSTAT extensions for glob]) +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <glob.h> ]], [[ +#ifndef GLOB_KEEPSTAT +#error "glob does not support GLOB_KEEPSTAT extension" +#endif +glob_t g; +g.gl_statv = NULL; +]])], + [ + AC_DEFINE([GLOB_HAS_GL_STATV], [1], + [Define if your system glob() function has + gl_statv options in glob_t]) + AC_MSG_RESULT([yes]) + ], [ + AC_MSG_RESULT([no]) + +]) + +AC_CHECK_DECLS([GLOB_NOMATCH], , , [#include <glob.h>]) + +AC_CHECK_DECL([VIS_ALL], , + AC_DEFINE(BROKEN_STRNVIS, 1, [missing VIS_ALL]), [#include <vis.h>]) + +AC_MSG_CHECKING([whether struct dirent allocates space for d_name]) +AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <dirent.h> +#include <stdlib.h> + ]], + [[ + struct dirent d; + exit(sizeof(d.d_name)<=sizeof(char)); + ]])], + [AC_MSG_RESULT([yes])], + [ + AC_MSG_RESULT([no]) + AC_DEFINE([BROKEN_ONE_BYTE_DIRENT_D_NAME], [1], + [Define if your struct dirent expects you to + allocate extra space for d_name]) + ], + [ + AC_MSG_WARN([cross compiling: assuming BROKEN_ONE_BYTE_DIRENT_D_NAME]) + AC_DEFINE([BROKEN_ONE_BYTE_DIRENT_D_NAME]) + ] +) + +AC_MSG_CHECKING([for /proc/pid/fd directory]) +if test -d "/proc/$$/fd" ; then + AC_DEFINE([HAVE_PROC_PID], [1], [Define if you have /proc/$pid/fd]) + AC_MSG_RESULT([yes]) +else + AC_MSG_RESULT([no]) +fi + +# Check whether user wants to use ldns +LDNS_MSG="no" +AC_ARG_WITH(ldns, + [ --with-ldns[[=PATH]] Use ldns for DNSSEC support (optionally in PATH)], + [ + ldns="" + if test "x$withval" = "xyes" ; then + AC_PATH_TOOL([LDNSCONFIG], [ldns-config], [no]) + if test "x$LDNSCONFIG" = "xno"; then + LIBS="-lldns $LIBS" + ldns=yes + else + LIBS="$LIBS `$LDNSCONFIG --libs`" + CPPFLAGS="$CPPFLAGS `$LDNSCONFIG --cflags`" + ldns=yes + fi + elif test "x$withval" != "xno" ; then + CPPFLAGS="$CPPFLAGS -I${withval}/include" + LDFLAGS="$LDFLAGS -L${withval}/lib" + LIBS="-lldns $LIBS" + ldns=yes + fi + + # Verify that it works. + if test "x$ldns" = "xyes" ; then + AC_DEFINE(HAVE_LDNS, 1, [Define if you want ldns support]) + LDNS_MSG="yes" + AC_MSG_CHECKING([for ldns support]) + AC_LINK_IFELSE( + [AC_LANG_SOURCE([[ +#include <stdio.h> +#include <stdlib.h> +#ifdef HAVE_STDINT_H +# include <stdint.h> +#endif +#include <ldns/ldns.h> +int main(void) { ldns_status status = ldns_verify_trusted(NULL, NULL, NULL, NULL); status=LDNS_STATUS_OK; exit(0); } + ]]) + ], + [AC_MSG_RESULT(yes)], + [ + AC_MSG_RESULT(no) + AC_MSG_ERROR([** Incomplete or missing ldns libraries.]) + ]) + fi +]) + +# Check whether user wants libedit support +LIBEDIT_MSG="no" +AC_ARG_WITH([libedit], + [ --with-libedit[[=PATH]] Enable libedit support for sftp], + [ if test "x$withval" != "xno" ; then + if test "x$withval" = "xyes" ; then + if test "x$PKGCONFIG" != "xno"; then + AC_MSG_CHECKING([if $PKGCONFIG knows about libedit]) + if "$PKGCONFIG" libedit; then + AC_MSG_RESULT([yes]) + use_pkgconfig_for_libedit=yes + else + AC_MSG_RESULT([no]) + fi + fi + else + CPPFLAGS="$CPPFLAGS -I${withval}/include" + if test -n "${rpath_opt}"; then + LDFLAGS="-L${withval}/lib ${rpath_opt}${withval}/lib ${LDFLAGS}" + else + LDFLAGS="-L${withval}/lib ${LDFLAGS}" + fi + fi + if test "x$use_pkgconfig_for_libedit" = "xyes"; then + LIBEDIT=`$PKGCONFIG --libs libedit` + CPPFLAGS="$CPPFLAGS `$PKGCONFIG --cflags libedit`" + else + LIBEDIT="-ledit -lcurses" + fi + OTHERLIBS=`echo $LIBEDIT | sed 's/-ledit//'` + AC_CHECK_LIB([edit], [el_init], + [ AC_DEFINE([USE_LIBEDIT], [1], [Use libedit for sftp]) + LIBEDIT_MSG="yes" + AC_SUBST([LIBEDIT]) + ], + [ AC_MSG_ERROR([libedit not found]) ], + [ $OTHERLIBS ] + ) + AC_MSG_CHECKING([if libedit version is compatible]) + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM([[ +#include <histedit.h> +#include <stdlib.h> + ]], + [[ + int i = H_SETSIZE; + el_init("", NULL, NULL, NULL); + exit(0); + ]])], + [ AC_MSG_RESULT([yes]) ], + [ AC_MSG_RESULT([no]) + AC_MSG_ERROR([libedit version is not compatible]) ] + ) + fi ] +) + +AUDIT_MODULE=none +AC_ARG_WITH([audit], + [ --with-audit=module Enable audit support (modules=debug,bsm,linux)], + [ + AC_MSG_CHECKING([for supported audit module]) + case "$withval" in + bsm) + AC_MSG_RESULT([bsm]) + AUDIT_MODULE=bsm + dnl Checks for headers, libs and functions + AC_CHECK_HEADERS([bsm/audit.h], [], + [AC_MSG_ERROR([BSM enabled and bsm/audit.h not found])], + [ +#ifdef HAVE_TIME_H +# include <time.h> +#endif + ] +) + AC_CHECK_LIB([bsm], [getaudit], [], + [AC_MSG_ERROR([BSM enabled and required library not found])]) + AC_CHECK_FUNCS([getaudit], [], + [AC_MSG_ERROR([BSM enabled and required function not found])]) + # These are optional + AC_CHECK_FUNCS([getaudit_addr aug_get_machine]) + AC_DEFINE([USE_BSM_AUDIT], [1], [Use BSM audit module]) + if test "$sol2ver" -ge 11; then + SSHDLIBS="$SSHDLIBS -lscf" + AC_DEFINE([BROKEN_BSM_API], [1], + [The system has incomplete BSM API]) + fi + ;; + linux) + AC_MSG_RESULT([linux]) + AUDIT_MODULE=linux + dnl Checks for headers, libs and functions + AC_CHECK_HEADERS([libaudit.h]) + SSHDLIBS="$SSHDLIBS -laudit" + AC_DEFINE([USE_LINUX_AUDIT], [1], [Use Linux audit module]) + ;; + debug) + AUDIT_MODULE=debug + AC_MSG_RESULT([debug]) + AC_DEFINE([SSH_AUDIT_EVENTS], [1], [Use audit debugging module]) + ;; + no) + AC_MSG_RESULT([no]) + ;; + *) + AC_MSG_ERROR([Unknown audit module $withval]) + ;; + esac ] +) + +AC_ARG_WITH([pie], + [ --with-pie Build Position Independent Executables if possible], [ + if test "x$withval" = "xno"; then + use_pie=no + fi + if test "x$withval" = "xyes"; then + use_pie=yes + fi + ] +) +if test "x$use_pie" = "x"; then + use_pie=no +fi +if test "x$use_toolchain_hardening" != "x1" && test "x$use_pie" = "xauto"; then + # Turn off automatic PIE when toolchain hardening is off. + use_pie=no +fi +if test "x$use_pie" = "xauto"; then + # Automatic PIE requires gcc >= 4.x + AC_MSG_CHECKING([for gcc >= 4.x]) + AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ +#if !defined(__GNUC__) || __GNUC__ < 4 +#error gcc is too old +#endif +]])], + [ AC_MSG_RESULT([yes]) ], + [ AC_MSG_RESULT([no]) + use_pie=no ] +) +fi +if test "x$use_pie" != "xno"; then + SAVED_CFLAGS="$CFLAGS" + SAVED_LDFLAGS="$LDFLAGS" + OSSH_CHECK_CFLAG_COMPILE([-fPIE]) + OSSH_CHECK_LDFLAG_LINK([-pie]) + # We use both -fPIE and -pie or neither. + AC_MSG_CHECKING([whether both -fPIE and -pie are supported]) + if echo "x $CFLAGS" | grep ' -fPIE' >/dev/null 2>&1 && \ + echo "x $LDFLAGS" | grep ' -pie' >/dev/null 2>&1 ; then + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([no]) + CFLAGS="$SAVED_CFLAGS" + LDFLAGS="$SAVED_LDFLAGS" + fi +fi + +AC_MSG_CHECKING([whether -fPIC is accepted]) +SAVED_CFLAGS="$CFLAGS" +CFLAGS="$CFLAGS -fPIC" +AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( [[ #include <stdlib.h> ]], [[ exit(0); ]] )], + [AC_MSG_RESULT([yes]) + PICFLAG="-fPIC"; ], + [AC_MSG_RESULT([no]) + PICFLAG=""; ]) +CFLAGS="$SAVED_CFLAGS" +AC_SUBST([PICFLAG]) + +dnl Checks for library functions. Please keep in alphabetical order +AC_CHECK_FUNCS([ \ + Blowfish_initstate \ + Blowfish_expandstate \ + Blowfish_expand0state \ + Blowfish_stream2word \ + SHA256Update \ + SHA384Update \ + SHA512Update \ + asprintf \ + b64_ntop \ + __b64_ntop \ + b64_pton \ + __b64_pton \ + bcopy \ + bcrypt_pbkdf \ + bindresvport_sa \ + blf_enc \ + bzero \ + cap_rights_limit \ + clock \ + closefrom \ + close_range \ + dirfd \ + endgrent \ + err \ + errx \ + explicit_bzero \ + explicit_memset \ + fchmod \ + fchmodat \ + fchown \ + fchownat \ + flock \ + fnmatch \ + freeaddrinfo \ + freezero \ + fstatfs \ + fstatvfs \ + futimes \ + getaddrinfo \ + getcwd \ + getentropy \ + getgrouplist \ + getline \ + getnameinfo \ + getopt \ + getpagesize \ + getpeereid \ + getpeerucred \ + getpgid \ + _getpty \ + getrlimit \ + getrandom \ + getsid \ + getttyent \ + glob \ + group_from_gid \ + inet_aton \ + inet_ntoa \ + inet_ntop \ + innetgr \ + killpg \ + llabs \ + localtime_r \ + login_getcapbool \ + login_getpwclass \ + memmem \ + memmove \ + memset_s \ + mkdtemp \ + ngetaddrinfo \ + nsleep \ + ogetaddrinfo \ + openlog_r \ + pledge \ + poll \ + ppoll \ + prctl \ + procctl \ + pselect \ + pstat \ + raise \ + readpassphrase \ + reallocarray \ + realpath \ + recvmsg \ + recallocarray \ + rresvport_af \ + sendmsg \ + setdtablesize \ + setegid \ + setenv \ + seteuid \ + setgroupent \ + setgroups \ + setlinebuf \ + setlogin \ + setpassent\ + setpcred \ + setproctitle \ + setregid \ + setreuid \ + setrlimit \ + setsid \ + setvbuf \ + sigaction \ + sigvec \ + snprintf \ + socketpair \ + statfs \ + statvfs \ + strcasestr \ + strdup \ + strerror \ + strlcat \ + strlcpy \ + strmode \ + strndup \ + strnlen \ + strnvis \ + strptime \ + strsignal \ + strtonum \ + strtoll \ + strtoul \ + strtoull \ + swap32 \ + sysconf \ + tcgetpgrp \ + timegm \ + timingsafe_bcmp \ + truncate \ + unsetenv \ + updwtmpx \ + utimensat \ + user_from_uid \ + usleep \ + vasprintf \ + vsnprintf \ + waitpid \ + warn \ +]) + +AC_CHECK_DECLS([bzero, memmem]) + +dnl Wide character support. +AC_CHECK_FUNCS([mblen mbtowc nl_langinfo wcwidth]) + +TEST_SSH_UTF8=${TEST_SSH_UTF8:=yes} +AC_MSG_CHECKING([for utf8 locale support]) +AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ +#include <locale.h> +#include <stdlib.h> + ]], [[ + char *loc = setlocale(LC_CTYPE, "en_US.UTF-8"); + if (loc != NULL) + exit(0); + exit(1); + ]])], + AC_MSG_RESULT(yes), + [AC_MSG_RESULT(no) + TEST_SSH_UTF8=no], + AC_MSG_WARN([cross compiling: assuming yes]) +) + +AC_LINK_IFELSE( + [AC_LANG_PROGRAM( + [[ #include <ctype.h> ]], + [[ return (isblank('a')); ]])], + [AC_DEFINE([HAVE_ISBLANK], [1], [Define if you have isblank(3C).]) +]) + +disable_pkcs11= +AC_ARG_ENABLE([pkcs11], + [ --disable-pkcs11 disable PKCS#11 support code [no]], + [ + if test "x$enableval" = "xno" ; then + disable_pkcs11=1 + fi + ] +) + +disable_sk= +AC_ARG_ENABLE([security-key], + [ --disable-security-key disable U2F/FIDO support code [no]], + [ + if test "x$enableval" = "xno" ; then + disable_sk=1 + fi + ] +) +enable_sk_internal= +AC_ARG_WITH([security-key-builtin], + [ --with-security-key-builtin include builtin U2F/FIDO support], + [ enable_sk_internal=$withval ] +) + +AC_SEARCH_LIBS([dlopen], [dl]) +AC_CHECK_FUNCS([dlopen]) +AC_CHECK_DECL([RTLD_NOW], [], [], [#include <dlfcn.h>]) + +# IRIX has a const char return value for gai_strerror() +AC_CHECK_FUNCS([gai_strerror], [ + AC_DEFINE([HAVE_GAI_STRERROR]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/socket.h> +#include <netdb.h> + +const char *gai_strerror(int); + ]], [[ + char *str; + str = gai_strerror(0); + ]])], [ + AC_DEFINE([HAVE_CONST_GAI_STRERROR_PROTO], [1], + [Define if gai_strerror() returns const char *])], [])]) + +AC_SEARCH_LIBS([nanosleep], [rt posix4], [AC_DEFINE([HAVE_NANOSLEEP], [1], + [Some systems put nanosleep outside of libc])]) + +AC_SEARCH_LIBS([clock_gettime], [rt], + [AC_DEFINE([HAVE_CLOCK_GETTIME], [1], [Have clock_gettime])]) + +dnl check if we need -D_REENTRANT for localtime_r declaration. +AC_CHECK_DECL([localtime_r], [], + [ saved_CPPFLAGS="$CPPFLAGS" + CPPFLAGS="$CPPFLAGS -D_REENTRANT" + unset ac_cv_have_decl_localtime_r + AC_CHECK_DECL([localtime_r], [], + [ CPPFLAGS="$saved_CPPFLAGS" ], + [ #include <time.h> ] + ) + ], + [ #include <time.h> ] +) + +dnl Make sure prototypes are defined for these before using them. +AC_CHECK_DECL([strsep], + [AC_CHECK_FUNCS([strsep])], + [], + [ +#ifdef HAVE_STRING_H +# include <string.h> +#endif + ]) + +dnl tcsendbreak might be a macro +AC_CHECK_DECL([tcsendbreak], + [AC_DEFINE([HAVE_TCSENDBREAK])], + [AC_CHECK_FUNCS([tcsendbreak])], + [#include <termios.h>] +) + +AC_CHECK_DECLS([h_errno], , ,[#include <netdb.h>]) + +AC_CHECK_DECLS([SHUT_RD, getpeereid], , , + [ +#include <sys/types.h> +#include <sys/socket.h> +#include <unistd.h> + ]) + +AC_CHECK_DECLS([O_NONBLOCK], , , + [ +#include <sys/types.h> +#ifdef HAVE_SYS_STAT_H +# include <sys/stat.h> +#endif +#ifdef HAVE_FCNTL_H +# include <fcntl.h> +#endif + ]) + +AC_CHECK_DECLS([ftruncate, getentropy], , , + [ +#include <sys/types.h> +#include <unistd.h> + ]) + +AC_CHECK_DECLS([readv, writev], , , [ +#include <sys/types.h> +#include <sys/uio.h> +#include <unistd.h> + ]) + +AC_CHECK_DECLS([MAXSYMLINKS], , , [ +#include <sys/param.h> + ]) + +AC_CHECK_DECLS([offsetof], , , [ +#include <stddef.h> + ]) + +# extra bits for select(2) +AC_CHECK_DECLS([howmany, NFDBITS], [], [], [[ +#include <sys/param.h> +#include <sys/types.h> +#ifdef HAVE_SYS_SYSMACROS_H +#include <sys/sysmacros.h> +#endif +#ifdef HAVE_SYS_SELECT_H +#include <sys/select.h> +#endif +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + ]]) +AC_CHECK_TYPES([fd_mask], [], [], [[ +#include <sys/param.h> +#include <sys/types.h> +#ifdef HAVE_SYS_SELECT_H +#include <sys/select.h> +#endif +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + ]]) + +AC_CHECK_FUNCS([setresuid], [ + dnl Some platorms have setresuid that isn't implemented, test for this + AC_MSG_CHECKING([if setresuid seems to work]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ +#include <errno.h> +#include <stdlib.h> +#include <unistd.h> + ]], [[ + errno=0; + setresuid(0,0,0); + if (errno==ENOSYS) + exit(1); + else + exit(0); + ]])], + [AC_MSG_RESULT([yes])], + [AC_DEFINE([BROKEN_SETRESUID], [1], + [Define if your setresuid() is broken]) + AC_MSG_RESULT([not implemented])], + [AC_MSG_WARN([cross compiling: not checking setresuid])] + ) +]) + +AC_CHECK_FUNCS([setresgid], [ + dnl Some platorms have setresgid that isn't implemented, test for this + AC_MSG_CHECKING([if setresgid seems to work]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ +#include <errno.h> +#include <stdlib.h> +#include <unistd.h> + ]], [[ + errno=0; + setresgid(0,0,0); + if (errno==ENOSYS) + exit(1); + else + exit(0); + ]])], + [AC_MSG_RESULT([yes])], + [AC_DEFINE([BROKEN_SETRESGID], [1], + [Define if your setresgid() is broken]) + AC_MSG_RESULT([not implemented])], + [AC_MSG_WARN([cross compiling: not checking setresuid])] + ) +]) + +AC_MSG_CHECKING([for working fflush(NULL)]) +AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ +#include <stdio.h> +#include <stdlib.h> + ]], + [[fflush(NULL); exit(0);]])], + AC_MSG_RESULT([yes]), + [AC_MSG_RESULT([no]) + AC_DEFINE([FFLUSH_NULL_BUG], [1], + [define if fflush(NULL) does not work])], + AC_MSG_WARN([cross compiling: assuming working]) +) + +dnl Checks for time functions +AC_CHECK_FUNCS([gettimeofday time]) +dnl Checks for utmp functions +AC_CHECK_FUNCS([endutent getutent getutid getutline pututline setutent]) +AC_CHECK_FUNCS([utmpname]) +dnl Checks for utmpx functions +AC_CHECK_FUNCS([endutxent getutxent getutxid getutxline getutxuser pututxline]) +AC_CHECK_FUNCS([setutxdb setutxent utmpxname]) +dnl Checks for lastlog functions +AC_CHECK_FUNCS([getlastlogxbyname]) + +AC_CHECK_FUNC([daemon], + [AC_DEFINE([HAVE_DAEMON], [1], [Define if your libraries define daemon()])], + [AC_CHECK_LIB([bsd], [daemon], + [LIBS="$LIBS -lbsd"; AC_DEFINE([HAVE_DAEMON])])] +) + +AC_CHECK_FUNC([getpagesize], + [AC_DEFINE([HAVE_GETPAGESIZE], [1], + [Define if your libraries define getpagesize()])], + [AC_CHECK_LIB([ucb], [getpagesize], + [LIBS="$LIBS -lucb"; AC_DEFINE([HAVE_GETPAGESIZE])])] +) + +# Check for broken snprintf +if test "x$ac_cv_func_snprintf" = "xyes" ; then + AC_MSG_CHECKING([whether snprintf correctly terminates long strings]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ +#include <stdio.h> +#include <stdlib.h> + ]], + [[ + char b[5]; + snprintf(b,5,"123456789"); + exit(b[4]!='\0'); + ]])], + [AC_MSG_RESULT([yes])], + [ + AC_MSG_RESULT([no]) + AC_DEFINE([BROKEN_SNPRINTF], [1], + [Define if your snprintf is busted]) + AC_MSG_WARN([****** Your snprintf() function is broken, complain to your vendor]) + ], + [ AC_MSG_WARN([cross compiling: Assuming working snprintf()]) ] + ) +fi + +if test "x$ac_cv_func_snprintf" = "xyes" ; then + AC_MSG_CHECKING([whether snprintf understands %zu]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + ]], + [[ + size_t a = 1, b = 2; + char z[128]; + snprintf(z, sizeof z, "%zu%zu", a, b); + exit(strcmp(z, "12")); + ]])], + [AC_MSG_RESULT([yes])], + [ + AC_MSG_RESULT([no]) + AC_DEFINE([BROKEN_SNPRINTF], [1], + [snprintf does not understand %zu]) + ], + [ AC_MSG_WARN([cross compiling: Assuming working snprintf()]) ] + ) +fi + +# We depend on vsnprintf returning the right thing on overflow: the +# number of characters it tried to create (as per SUSv3) +if test "x$ac_cv_func_vsnprintf" = "xyes" ; then + AC_MSG_CHECKING([whether vsnprintf returns correct values on overflow]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <stdio.h> +#include <stdarg.h> + +int x_snprintf(char *str, size_t count, const char *fmt, ...) +{ + size_t ret; + va_list ap; + + va_start(ap, fmt); + ret = vsnprintf(str, count, fmt, ap); + va_end(ap); + return ret; +} + ]], [[ +char x[1]; +if (x_snprintf(x, 1, "%s %d", "hello", 12345) != 11) + return 1; +if (x_snprintf(NULL, 0, "%s %d", "hello", 12345) != 11) + return 1; +return 0; + ]])], + [AC_MSG_RESULT([yes])], + [ + AC_MSG_RESULT([no]) + AC_DEFINE([BROKEN_SNPRINTF], [1], + [Define if your snprintf is busted]) + AC_MSG_WARN([****** Your vsnprintf() function is broken, complain to your vendor]) + ], + [ AC_MSG_WARN([cross compiling: Assuming working vsnprintf()]) ] + ) +fi + +# On systems where [v]snprintf is broken, but is declared in stdio, +# check that the fmt argument is const char * or just char *. +# This is only useful for when BROKEN_SNPRINTF +AC_MSG_CHECKING([whether snprintf can declare const char *fmt]) +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <stdio.h> +int snprintf(char *a, size_t b, const char *c, ...) { return 0; } + ]], [[ + snprintf(0, 0, 0); + ]])], + [AC_MSG_RESULT([yes]) + AC_DEFINE([SNPRINTF_CONST], [const], + [Define as const if snprintf() can declare const char *fmt])], + [AC_MSG_RESULT([no]) + AC_DEFINE([SNPRINTF_CONST], [/* not const */])]) + +# Check for missing getpeereid (or equiv) support +NO_PEERCHECK="" +if test "x$ac_cv_func_getpeereid" != "xyes" -a "x$ac_cv_func_getpeerucred" != "xyes"; then + AC_MSG_CHECKING([whether system supports SO_PEERCRED getsockopt]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/socket.h>]], [[int i = SO_PEERCRED;]])], + [ AC_MSG_RESULT([yes]) + AC_DEFINE([HAVE_SO_PEERCRED], [1], [Have PEERCRED socket option]) + ], [AC_MSG_RESULT([no]) + NO_PEERCHECK=1 + ]) +fi + +dnl make sure that openpty does not reacquire controlling terminal +if test ! -z "$check_for_openpty_ctty_bug"; then + AC_MSG_CHECKING([if openpty correctly handles controlling tty]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#ifdef HAVE_PTY_H +# include <pty.h> +#endif +#include <sys/fcntl.h> +#include <sys/types.h> +#include <sys/wait.h> + ]], [[ + pid_t pid; + int fd, ptyfd, ttyfd, status; + + pid = fork(); + if (pid < 0) { /* failed */ + exit(1); + } else if (pid > 0) { /* parent */ + waitpid(pid, &status, 0); + if (WIFEXITED(status)) + exit(WEXITSTATUS(status)); + else + exit(2); + } else { /* child */ + close(0); close(1); close(2); + setsid(); + openpty(&ptyfd, &ttyfd, NULL, NULL, NULL); + fd = open("/dev/tty", O_RDWR | O_NOCTTY); + if (fd >= 0) + exit(3); /* Acquired ctty: broken */ + else + exit(0); /* Did not acquire ctty: OK */ + } + ]])], + [ + AC_MSG_RESULT([yes]) + ], + [ + AC_MSG_RESULT([no]) + AC_DEFINE([SSHD_ACQUIRES_CTTY]) + ], + [ + AC_MSG_RESULT([cross-compiling, assuming yes]) + ] + ) +fi + +if test "x$ac_cv_func_getaddrinfo" = "xyes" && \ + test "x$check_for_hpux_broken_getaddrinfo" = "x1"; then + AC_MSG_CHECKING([if getaddrinfo seems to work]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ +#include <stdio.h> +#include <stdlib.h> +#include <sys/socket.h> +#include <netdb.h> +#include <errno.h> +#include <netinet/in.h> + +#define TEST_PORT "2222" + ]], [[ + int err, sock; + struct addrinfo *gai_ai, *ai, hints; + char ntop[NI_MAXHOST], strport[NI_MAXSERV], *name = NULL; + + memset(&hints, 0, sizeof(hints)); + hints.ai_family = PF_UNSPEC; + hints.ai_socktype = SOCK_STREAM; + hints.ai_flags = AI_PASSIVE; + + err = getaddrinfo(name, TEST_PORT, &hints, &gai_ai); + if (err != 0) { + fprintf(stderr, "getaddrinfo failed (%s)", gai_strerror(err)); + exit(1); + } + + for (ai = gai_ai; ai != NULL; ai = ai->ai_next) { + if (ai->ai_family != AF_INET6) + continue; + + err = getnameinfo(ai->ai_addr, ai->ai_addrlen, ntop, + sizeof(ntop), strport, sizeof(strport), + NI_NUMERICHOST|NI_NUMERICSERV); + + if (err != 0) { + if (err == EAI_SYSTEM) + perror("getnameinfo EAI_SYSTEM"); + else + fprintf(stderr, "getnameinfo failed: %s\n", + gai_strerror(err)); + exit(2); + } + + sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol); + if (sock < 0) + perror("socket"); + if (bind(sock, ai->ai_addr, ai->ai_addrlen) < 0) { + if (errno == EBADF) + exit(3); + } + } + exit(0); + ]])], + [ + AC_MSG_RESULT([yes]) + ], + [ + AC_MSG_RESULT([no]) + AC_DEFINE([BROKEN_GETADDRINFO]) + ], + [ + AC_MSG_RESULT([cross-compiling, assuming yes]) + ] + ) +fi + +if test "x$ac_cv_func_getaddrinfo" = "xyes" && \ + test "x$check_for_aix_broken_getaddrinfo" = "x1"; then + AC_MSG_CHECKING([if getaddrinfo seems to work]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ +#include <stdio.h> +#include <stdlib.h> +#include <sys/socket.h> +#include <netdb.h> +#include <errno.h> +#include <netinet/in.h> + +#define TEST_PORT "2222" + ]], [[ + int err, sock; + struct addrinfo *gai_ai, *ai, hints; + char ntop[NI_MAXHOST], strport[NI_MAXSERV], *name = NULL; + + memset(&hints, 0, sizeof(hints)); + hints.ai_family = PF_UNSPEC; + hints.ai_socktype = SOCK_STREAM; + hints.ai_flags = AI_PASSIVE; + + err = getaddrinfo(name, TEST_PORT, &hints, &gai_ai); + if (err != 0) { + fprintf(stderr, "getaddrinfo failed (%s)", gai_strerror(err)); + exit(1); + } + + for (ai = gai_ai; ai != NULL; ai = ai->ai_next) { + if (ai->ai_family != AF_INET && ai->ai_family != AF_INET6) + continue; + + err = getnameinfo(ai->ai_addr, ai->ai_addrlen, ntop, + sizeof(ntop), strport, sizeof(strport), + NI_NUMERICHOST|NI_NUMERICSERV); + + if (ai->ai_family == AF_INET && err != 0) { + perror("getnameinfo"); + exit(2); + } + } + exit(0); + ]])], + [ + AC_MSG_RESULT([yes]) + AC_DEFINE([AIX_GETNAMEINFO_HACK], [1], + [Define if you have a getaddrinfo that fails + for the all-zeros IPv6 address]) + ], + [ + AC_MSG_RESULT([no]) + AC_DEFINE([BROKEN_GETADDRINFO]) + ], + [ + AC_MSG_RESULT([cross-compiling, assuming no]) + ] + ) +fi + +if test "x$ac_cv_func_getaddrinfo" = "xyes"; then + AC_CHECK_DECLS(AI_NUMERICSERV, , , + [#include <sys/types.h> + #include <sys/socket.h> + #include <netdb.h>]) +fi + +if test "x$check_for_conflicting_getspnam" = "x1"; then + AC_MSG_CHECKING([for conflicting getspnam in shadow.h]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <shadow.h> +#include <stdlib.h> + ]], + [[ exit(0); ]])], + [ + AC_MSG_RESULT([no]) + ], + [ + AC_MSG_RESULT([yes]) + AC_DEFINE([GETSPNAM_CONFLICTING_DEFS], [1], + [Conflicting defs for getspnam]) + ] + ) +fi + +dnl NetBSD added an strnvis and unfortunately made it incompatible with the +dnl existing one in OpenBSD and Linux's libbsd (the former having existed +dnl for over ten years). Despite this incompatibility being reported during +dnl development (see http://gnats.netbsd.org/44977) they still shipped it. +dnl Even more unfortunately FreeBSD and later MacOS picked up this incompatible +dnl implementation. Try to detect this mess, and assume the only safe option +dnl if we're cross compiling. +dnl +dnl OpenBSD, 2001: strnvis(char *dst, const char *src, size_t dlen, int flag); +dnl NetBSD: 2012, strnvis(char *dst, size_t dlen, const char *src, int flag); +if test "x$ac_cv_func_strnvis" = "xyes"; then + AC_MSG_CHECKING([for working strnvis]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ +#include <signal.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <vis.h> +static void sighandler(int sig) { _exit(1); } + ]], [[ + char dst[16]; + + signal(SIGSEGV, sighandler); + if (strnvis(dst, "src", 4, 0) && strcmp(dst, "src") == 0) + exit(0); + exit(1) + ]])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + AC_DEFINE([BROKEN_STRNVIS], [1], [strnvis detected broken])], + [AC_MSG_WARN([cross compiling: assuming broken]) + AC_DEFINE([BROKEN_STRNVIS], [1], [strnvis assumed broken])] + ) +fi + +AC_MSG_CHECKING([if SA_RESTARTed signals interrupt select()]) +AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ +#ifdef HAVE_SYS_SELECT +# include <sys/select.h> +#endif +#include <sys/types.h> +#include <sys/time.h> +#include <stdlib.h> +#include <signal.h> +#include <unistd.h> +static void sighandler(int sig) { } + ]], [[ + int r; + pid_t pid; + struct sigaction sa; + + sa.sa_handler = sighandler; + sa.sa_flags = SA_RESTART; + (void)sigaction(SIGTERM, &sa, NULL); + if ((pid = fork()) == 0) { /* child */ + pid = getppid(); + sleep(1); + kill(pid, SIGTERM); + sleep(1); + if (getppid() == pid) /* if parent did not exit, shoot it */ + kill(pid, SIGKILL); + exit(0); + } else { /* parent */ + r = select(0, NULL, NULL, NULL, NULL); + } + exit(r == -1 ? 0 : 1); + ]])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + AC_DEFINE([NO_SA_RESTART], [1], + [SA_RESTARTed signals do no interrupt select])], + [AC_MSG_WARN([cross compiling: assuming yes])] +) + +AC_CHECK_FUNCS([getpgrp],[ + AC_MSG_CHECKING([if getpgrp accepts zero args]) + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM([[$ac_includes_default]], [[ getpgrp(); ]])], + [ AC_MSG_RESULT([yes]) + AC_DEFINE([GETPGRP_VOID], [1], [getpgrp takes zero args])], + [ AC_MSG_RESULT([no]) + AC_DEFINE([GETPGRP_VOID], [0], [getpgrp takes one arg])] + ) +]) + +# Search for OpenSSL +saved_CPPFLAGS="$CPPFLAGS" +saved_LDFLAGS="$LDFLAGS" +openssl_bin_PATH="$PATH" +AC_ARG_WITH([ssl-dir], + [ --with-ssl-dir=PATH Specify path to OpenSSL installation ], + [ + if test "x$openssl" = "xno" ; then + AC_MSG_ERROR([cannot use --with-ssl-dir when OpenSSL disabled]) + fi + if test "x$withval" != "xno" ; then + case "$withval" in + # Relative paths + ./*|../*) withval="`pwd`/$withval" + esac + if test -d "$withval/lib"; then + libcrypto_path="${withval}/lib" + elif test -d "$withval/lib64"; then + libcrypto_path="$withval/lib64" + else + # Built but not installed + libcrypto_path="${withval}" + fi + if test -n "${rpath_opt}"; then + LDFLAGS="-L${libcrypto_path} ${rpath_opt}${libcrypto_path} ${LDFLAGS}" + else + LDFLAGS="-L${libcrypto_path} ${LDFLAGS}" + fi + if test -d "$withval/include"; then + CPPFLAGS="-I${withval}/include ${CPPFLAGS}" + else + CPPFLAGS="-I${withval} ${CPPFLAGS}" + fi + openssl_bin_PATH="${PATH}${PATH_SEPARATOR}${withval}/bin${PATH_SEPARATOR}${withval}/apps" + fi + ] +) +AC_PATH_PROGS([openssl_bin], openssl, [], [$openssl_bin_PATH]) +AC_SUBST(OPENSSL_BIN, [${openssl_bin}]) + +AC_ARG_WITH([openssl-header-check], + [ --without-openssl-header-check Disable OpenSSL version consistency check], + [ + if test "x$withval" = "xno" ; then + openssl_check_nonfatal=1 + fi + ] +) + +openssl_engine=no +AC_ARG_WITH([ssl-engine], + [ --with-ssl-engine Enable OpenSSL (hardware) ENGINE support ], + [ + if test "x$withval" != "xno" ; then + if test "x$openssl" = "xno" ; then + AC_MSG_ERROR([cannot use --with-ssl-engine when OpenSSL disabled]) + fi + openssl_engine=yes + fi + ] +) + +nocrypto_saved_LIBS="$LIBS" +if test "x$openssl" = "xyes" ; then + LIBS="-lcrypto $LIBS" + CHANNELLIBS="-lcrypto $CHANNELLIBS" + AC_TRY_LINK_FUNC([RAND_add], , + [AC_MSG_ERROR([*** working libcrypto not found, check config.log])]) + AC_CHECK_HEADER([openssl/opensslv.h], , + [AC_MSG_ERROR([*** OpenSSL headers missing - please install first or check config.log ***])]) + + # Determine OpenSSL header version + AC_MSG_CHECKING([OpenSSL header version]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ + #include <stdlib.h> + #include <stdio.h> + #include <string.h> + #include <openssl/opensslv.h> + #define DATA "conftest.sslincver" + ]], [[ + FILE *fd; + int rc; + + fd = fopen(DATA,"w"); + if(fd == NULL) + exit(1); + + if ((rc = fprintf(fd, "%08lx (%s)\n", + (unsigned long)OPENSSL_VERSION_NUMBER, + OPENSSL_VERSION_TEXT)) < 0) + exit(1); + + exit(0); + ]])], + [ + ssl_header_ver=`cat conftest.sslincver` + AC_MSG_RESULT([$ssl_header_ver]) + ], + [ + AC_MSG_RESULT([not found]) + AC_MSG_ERROR([OpenSSL version header not found.]) + ], + [ + AC_MSG_WARN([cross compiling: not checking]) + ] + ) + + # Determining OpenSSL library version is version dependent. + AC_CHECK_FUNCS([OpenSSL_version OpenSSL_version_num]) + + # Determine OpenSSL library version + AC_MSG_CHECKING([OpenSSL library version]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ + #include <stdio.h> + #include <stdlib.h> + #include <string.h> + #include <openssl/opensslv.h> + #include <openssl/crypto.h> + #define DATA "conftest.ssllibver" + ]], [[ + FILE *f; + /* We need these legacy bits to warn for old libcrypto */ + #ifndef OPENSSL_VERSION + # define OPENSSL_VERSION SSLEAY_VERSION + #endif + #ifndef HAVE_OPENSSL_VERSION + # define OpenSSL_version SSLeay_version + #endif + #ifndef HAVE_OPENSSL_VERSION_NUM + # define OpenSSL_version_num SSLeay + #endif + if ((f = fopen(DATA, "w")) == NULL) + exit(1); + if (fprintf(f, "%08lx (%s)", + (unsigned long)OpenSSL_version_num(), + OpenSSL_version(OPENSSL_VERSION)) < 0) + exit(1); +#ifdef LIBRESSL_VERSION_NUMBER + if (fprintf(f, " libressl-%08lx", LIBRESSL_VERSION_NUMBER) < 0) + exit(1); +#endif + if (fputc('\n', f) == EOF || fclose(f) == EOF) + exit(1); + exit(0); + ]])], + [ + sslver=`cat conftest.ssllibver` + ssl_showver=`echo "$sslver" | sed 's/ libressl-.*//'` + # Check version is supported. + case "$sslver" in + 100*|10100*) # 1.0.x, 1.1.0x + AC_MSG_ERROR([OpenSSL >= 1.1.1 required (have "$ssl_showver")]) + ;; + 101*) ;; # 1.1.x + 200*) # LibreSSL + lver=`echo "$sslver" | sed 's/.*libressl-//'` + case "$lver" in + 2*|300*) # 2.x, 3.0.0 + AC_MSG_ERROR([LibreSSL >= 3.1.0 required (have "$ssl_showver")]) + ;; + *) ;; # Assume all other versions are good. + esac + ;; + 300*) + # OpenSSL 3; we use the 1.1x API + CPPFLAGS="$CPPFLAGS -DOPENSSL_API_COMPAT=0x10100000L" + ;; + 301*|302*|303*) + # OpenSSL development branch; request 1.1x API + CPPFLAGS="$CPPFLAGS -DOPENSSL_API_COMPAT=0x10100000L" + ;; + *) + AC_MSG_ERROR([Unknown/unsupported OpenSSL version ("$ssl_showver")]) + ;; + esac + AC_MSG_RESULT([$ssl_showver]) + ], + [ + AC_MSG_RESULT([not found]) + AC_MSG_ERROR([OpenSSL library not found.]) + ], + [ + AC_MSG_WARN([cross compiling: not checking]) + ] + ) + + case "$host" in + x86_64-*) + case "$sslver" in + 3000004*) + AC_MSG_ERROR([OpenSSL 3.0.4 has a potential RCE in its RSA implementation (CVE-2022-2274)]) + ;; + esac + esac + + # Sanity check OpenSSL headers + AC_MSG_CHECKING([whether OpenSSL's headers match the library]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ + #include <stdlib.h> + #include <string.h> + #include <openssl/opensslv.h> + #include <openssl/crypto.h> + ]], [[ + exit(OpenSSL_version_num() == OPENSSL_VERSION_NUMBER ? 0 : 1); + ]])], + [ + AC_MSG_RESULT([yes]) + ], + [ + AC_MSG_RESULT([no]) + if test "x$openssl_check_nonfatal" = "x"; then + AC_MSG_ERROR([Your OpenSSL headers do not match your + library. Check config.log for details. + If you are sure your installation is consistent, you can disable the check + by running "./configure --without-openssl-header-check". + Also see contrib/findssl.sh for help identifying header/library mismatches. + ]) + else + AC_MSG_WARN([Your OpenSSL headers do not match your + library. Check config.log for details. + Also see contrib/findssl.sh for help identifying header/library mismatches.]) + fi + ], + [ + AC_MSG_WARN([cross compiling: not checking]) + ] + ) + + AC_MSG_CHECKING([if programs using OpenSSL functions will link]) + AC_LINK_IFELSE( + [AC_LANG_PROGRAM([[ #include <openssl/err.h> ]], + [[ ERR_load_crypto_strings(); ]])], + [ + AC_MSG_RESULT([yes]) + ], + [ + AC_MSG_RESULT([no]) + LIBS="$LIBS -ldl" + AC_MSG_CHECKING([if programs using OpenSSL need -ldl]) + AC_LINK_IFELSE( + [AC_LANG_PROGRAM([[ #include <openssl/err.h> ]], + [[ ERR_load_crypto_strings(); ]])], + [ + AC_MSG_RESULT([yes]) + CHANNELLIBS="$CHANNELLIBS -ldl" + ], + [ + AC_MSG_RESULT([no]) + ] + ) + ] + ) + + AC_CHECK_FUNCS([ \ + BN_is_prime_ex \ + DES_crypt \ + DSA_generate_parameters_ex \ + EVP_DigestFinal_ex \ + EVP_DigestInit_ex \ + EVP_MD_CTX_cleanup \ + EVP_MD_CTX_copy_ex \ + EVP_MD_CTX_init \ + HMAC_CTX_init \ + RSA_generate_key_ex \ + RSA_get_default_method \ + ]) + + # OpenSSL_add_all_algorithms may be a macro. + AC_CHECK_FUNC(OpenSSL_add_all_algorithms, + AC_DEFINE(HAVE_OPENSSL_ADD_ALL_ALGORITHMS, 1, [as a function]), + AC_CHECK_DECL(OpenSSL_add_all_algorithms, + AC_DEFINE(HAVE_OPENSSL_ADD_ALL_ALGORITHMS, 1, [as a macro]), , + [[#include <openssl/evp.h>]] + ) + ) + + # LibreSSL/OpenSSL API differences + AC_CHECK_FUNCS([ \ + EVP_CIPHER_CTX_iv \ + EVP_CIPHER_CTX_iv_noconst \ + EVP_CIPHER_CTX_get_iv \ + EVP_CIPHER_CTX_get_updated_iv \ + EVP_CIPHER_CTX_set_iv \ + ]) + + if test "x$openssl_engine" = "xyes" ; then + AC_MSG_CHECKING([for OpenSSL ENGINE support]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ + #include <openssl/engine.h> + ]], [[ + ENGINE_load_builtin_engines(); + ENGINE_register_all_complete(); + ]])], + [ AC_MSG_RESULT([yes]) + AC_DEFINE([USE_OPENSSL_ENGINE], [1], + [Enable OpenSSL engine support]) + ], [ AC_MSG_ERROR([OpenSSL ENGINE support not found]) + ]) + fi + + # Check for OpenSSL without EVP_aes_{192,256}_cbc + AC_MSG_CHECKING([whether OpenSSL has crippled AES support]) + AC_LINK_IFELSE( + [AC_LANG_PROGRAM([[ + #include <stdlib.h> + #include <string.h> + #include <openssl/evp.h> + ]], [[ + exit(EVP_aes_192_cbc() == NULL || EVP_aes_256_cbc() == NULL); + ]])], + [ + AC_MSG_RESULT([no]) + ], + [ + AC_MSG_RESULT([yes]) + AC_DEFINE([OPENSSL_LOBOTOMISED_AES], [1], + [libcrypto is missing AES 192 and 256 bit functions]) + ] + ) + + AC_MSG_CHECKING([if EVP_DigestUpdate returns an int]) + AC_LINK_IFELSE( + [AC_LANG_PROGRAM([[ + #include <stdlib.h> + #include <string.h> + #include <openssl/evp.h> + ]], [[ + if(EVP_DigestUpdate(NULL, NULL,0)) + exit(0); + ]])], + [ + AC_MSG_RESULT([yes]) + ], + [ + AC_MSG_RESULT([no]) + AC_DEFINE([OPENSSL_EVP_DIGESTUPDATE_VOID], [1], + [Define if EVP_DigestUpdate returns void]) + ] + ) + + # Check for various EVP support in OpenSSL + AC_CHECK_FUNCS([EVP_sha256 EVP_sha384 EVP_sha512 EVP_chacha20]) + + # Check complete ECC support in OpenSSL + AC_MSG_CHECKING([whether OpenSSL has NID_X9_62_prime256v1]) + AC_LINK_IFELSE( + [AC_LANG_PROGRAM([[ + #include <openssl/ec.h> + #include <openssl/ecdh.h> + #include <openssl/ecdsa.h> + #include <openssl/evp.h> + #include <openssl/objects.h> + #include <openssl/opensslv.h> + ]], [[ + EC_KEY *e = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1); + const EVP_MD *m = EVP_sha256(); /* We need this too */ + ]])], + [ AC_MSG_RESULT([yes]) + enable_nistp256=1 ], + [ AC_MSG_RESULT([no]) ] + ) + + AC_MSG_CHECKING([whether OpenSSL has NID_secp384r1]) + AC_LINK_IFELSE( + [AC_LANG_PROGRAM([[ + #include <openssl/ec.h> + #include <openssl/ecdh.h> + #include <openssl/ecdsa.h> + #include <openssl/evp.h> + #include <openssl/objects.h> + #include <openssl/opensslv.h> + ]], [[ + EC_KEY *e = EC_KEY_new_by_curve_name(NID_secp384r1); + const EVP_MD *m = EVP_sha384(); /* We need this too */ + ]])], + [ AC_MSG_RESULT([yes]) + enable_nistp384=1 ], + [ AC_MSG_RESULT([no]) ] + ) + + AC_MSG_CHECKING([whether OpenSSL has NID_secp521r1]) + AC_LINK_IFELSE( + [AC_LANG_PROGRAM([[ + #include <openssl/ec.h> + #include <openssl/ecdh.h> + #include <openssl/ecdsa.h> + #include <openssl/evp.h> + #include <openssl/objects.h> + #include <openssl/opensslv.h> + ]], [[ + EC_KEY *e = EC_KEY_new_by_curve_name(NID_secp521r1); + const EVP_MD *m = EVP_sha512(); /* We need this too */ + ]])], + [ AC_MSG_RESULT([yes]) + AC_MSG_CHECKING([if OpenSSL's NID_secp521r1 is functional]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ + #include <stdlib.h> + #include <openssl/ec.h> + #include <openssl/ecdh.h> + #include <openssl/ecdsa.h> + #include <openssl/evp.h> + #include <openssl/objects.h> + #include <openssl/opensslv.h> + ]],[[ + EC_KEY *e = EC_KEY_new_by_curve_name(NID_secp521r1); + const EVP_MD *m = EVP_sha512(); /* We need this too */ + exit(e == NULL || m == NULL); + ]])], + [ AC_MSG_RESULT([yes]) + enable_nistp521=1 ], + [ AC_MSG_RESULT([no]) ], + [ AC_MSG_WARN([cross-compiling: assuming yes]) + enable_nistp521=1 ] + )], + AC_MSG_RESULT([no]) + ) + + if test x$enable_nistp256 = x1 || test x$enable_nistp384 = x1 || \ + test x$enable_nistp521 = x1; then + AC_DEFINE(OPENSSL_HAS_ECC, [1], [OpenSSL has ECC]) + AC_CHECK_FUNCS([EC_KEY_METHOD_new]) + openssl_ecc=yes + else + openssl_ecc=no + fi + if test x$enable_nistp256 = x1; then + AC_DEFINE([OPENSSL_HAS_NISTP256], [1], + [libcrypto has NID_X9_62_prime256v1]) + else + unsupported_algorithms="$unsupported_algorithms \ + ecdsa-sha2-nistp256 \ + ecdh-sha2-nistp256 \ + ecdsa-sha2-nistp256-cert-v01@openssh.com" + fi + if test x$enable_nistp384 = x1; then + AC_DEFINE([OPENSSL_HAS_NISTP384], [1], [libcrypto has NID_secp384r1]) + else + unsupported_algorithms="$unsupported_algorithms \ + ecdsa-sha2-nistp384 \ + ecdh-sha2-nistp384 \ + ecdsa-sha2-nistp384-cert-v01@openssh.com" + fi + if test x$enable_nistp521 = x1; then + AC_DEFINE([OPENSSL_HAS_NISTP521], [1], [libcrypto has NID_secp521r1]) + else + unsupported_algorithms="$unsupported_algorithms \ + ecdh-sha2-nistp521 \ + ecdsa-sha2-nistp521 \ + ecdsa-sha2-nistp521-cert-v01@openssh.com" + fi + + # Check libcrypto ED25519 support + AC_CHECK_FUNCS([EVP_PKEY_get_raw_public_key]) + AC_CHECK_FUNCS([EVP_PKEY_get_raw_private_key]) + AC_MSG_CHECKING([whether OpenSSL has ED25519 support]) + AC_LINK_IFELSE( + [AC_LANG_PROGRAM([[ + #include <string.h> + #include <openssl/evp.h> + ]], [[ + unsigned char buf[64]; + memset(buf, 0, sizeof(buf)); + exit(EVP_PKEY_new_raw_private_key(EVP_PKEY_ED25519, + buf, sizeof(buf)) == NULL); + ]])], + [ + AC_MSG_RESULT([yes]) + AC_DEFINE([OPENSSL_HAS_ED25519], [1], + [libcrypto has ed25519 support]) + ], + [ + AC_MSG_RESULT([no]) + ] + ) +fi + +# PKCS11/U2F depend on OpenSSL and dlopen(). +enable_pkcs11=yes +enable_sk=yes +if test "x$openssl" != "xyes" ; then + enable_pkcs11="disabled; missing libcrypto" +fi +if test "x$ac_cv_func_dlopen" != "xyes" ; then + enable_pkcs11="disabled; missing dlopen(3)" + enable_sk="disabled; missing dlopen(3)" +fi +if test "x$ac_cv_have_decl_RTLD_NOW" != "xyes" ; then + enable_pkcs11="disabled; missing RTLD_NOW" + enable_sk="disabled; missing RTLD_NOW" +fi +if test ! -z "$disable_pkcs11" ; then + enable_pkcs11="disabled by user" +fi +if test ! -z "$disable_sk" ; then + enable_sk="disabled by user" +fi + +AC_MSG_CHECKING([whether to enable PKCS11]) +if test "x$enable_pkcs11" = "xyes" ; then + AC_DEFINE([ENABLE_PKCS11], [], [Enable for PKCS#11 support]) +fi +AC_MSG_RESULT([$enable_pkcs11]) + +AC_MSG_CHECKING([whether to enable U2F]) +if test "x$enable_sk" = "xyes" ; then + AC_DEFINE([ENABLE_SK], [], [Enable for U2F/FIDO support]) + AC_SUBST(SK_DUMMY_LIBRARY, [regress/misc/sk-dummy/sk-dummy.so]) +else + # Do not try to build sk-dummy library. + AC_SUBST(SK_DUMMY_LIBRARY, [""]) +fi +AC_MSG_RESULT([$enable_sk]) + +# Now check for built-in security key support. +if test "x$enable_sk" = "xyes" -a "x$enable_sk_internal" != "xno" ; then + use_pkgconfig_for_libfido2= + if test "x$PKGCONFIG" != "xno"; then + AC_MSG_CHECKING([if $PKGCONFIG knows about libfido2]) + if "$PKGCONFIG" libfido2; then + AC_MSG_RESULT([yes]) + use_pkgconfig_for_libfido2=yes + else + AC_MSG_RESULT([no]) + fi + fi + if test "x$use_pkgconfig_for_libfido2" = "xyes"; then + LIBFIDO2=`$PKGCONFIG --libs libfido2` + CPPFLAGS="$CPPFLAGS `$PKGCONFIG --cflags libfido2`" + else + LIBFIDO2="-lfido2 -lcbor" + fi + OTHERLIBS=`echo $LIBFIDO2 | sed 's/-lfido2//'` + fido2_error= + AC_CHECK_LIB([fido2], [fido_init], + [ ], + [ fido2_error="missing/unusable libfido2" ], + [ $OTHERLIBS ] + ) + AC_CHECK_HEADER([fido.h], [], + [ fido2_error="missing fido.h from libfido2" ]) + AC_CHECK_HEADER([fido/credman.h], [], + [ fido2_error="missing fido/credman.h from libfido2" ], + [ #include <fido.h> ] + ) + AC_MSG_CHECKING([for usable libfido2 installation]) + if test ! -z "$fido2_error" ; then + AC_MSG_RESULT([$fido2_error]) + if test "x$enable_sk_internal" = "xyes" ; then + AC_MSG_ERROR([No usable libfido2 library/headers found]) + fi + LIBFIDO2="" + else + AC_MSG_RESULT([yes]) + AC_SUBST([LIBFIDO2]) + AC_DEFINE([ENABLE_SK_INTERNAL], [], + [Enable for built-in U2F/FIDO support]) + enable_sk="built-in" + saved_LIBS="$LIBS" + LIBS="$LIBFIDO2 $LIBS" + AC_CHECK_FUNCS([ \ + fido_assert_set_clientdata \ + fido_cred_prot \ + fido_cred_set_prot \ + fido_cred_set_clientdata \ + fido_dev_get_touch_begin \ + fido_dev_get_touch_status \ + fido_dev_supports_cred_prot \ + fido_dev_is_winhello \ + ]) + LIBS="$saved_LIBS" + fi +fi + +AC_CHECK_FUNCS([ \ + arc4random \ + arc4random_buf \ + arc4random_stir \ + arc4random_uniform \ +]) +### Configure cryptographic random number support + +# Check whether OpenSSL seeds itself +if test "x$openssl" = "xyes" ; then + AC_MSG_CHECKING([whether OpenSSL's PRNG is internally seeded]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ + #include <stdlib.h> + #include <string.h> + #include <openssl/rand.h> + ]], [[ + exit(RAND_status() == 1 ? 0 : 1); + ]])], + [ + OPENSSL_SEEDS_ITSELF=yes + AC_MSG_RESULT([yes]) + ], + [ + AC_MSG_RESULT([no]) + ], + [ + AC_MSG_WARN([cross compiling: assuming yes]) + # This is safe, since we will fatal() at runtime if + # OpenSSL is not seeded correctly. + OPENSSL_SEEDS_ITSELF=yes + ] + ) +fi + +# PRNGD TCP socket +AC_ARG_WITH([prngd-port], + [ --with-prngd-port=PORT read entropy from PRNGD/EGD TCP localhost:PORT], + [ + case "$withval" in + no) + withval="" + ;; + [[0-9]]*) + ;; + *) + AC_MSG_ERROR([You must specify a numeric port number for --with-prngd-port]) + ;; + esac + if test ! -z "$withval" ; then + PRNGD_PORT="$withval" + AC_DEFINE_UNQUOTED([PRNGD_PORT], [$PRNGD_PORT], + [Port number of PRNGD/EGD random number socket]) + fi + ] +) + +# PRNGD Unix domain socket +AC_ARG_WITH([prngd-socket], + [ --with-prngd-socket=FILE read entropy from PRNGD/EGD socket FILE (default=/var/run/egd-pool)], + [ + case "$withval" in + yes) + withval="/var/run/egd-pool" + ;; + no) + withval="" + ;; + /*) + ;; + *) + AC_MSG_ERROR([You must specify an absolute path to the entropy socket]) + ;; + esac + + if test ! -z "$withval" ; then + if test ! -z "$PRNGD_PORT" ; then + AC_MSG_ERROR([You may not specify both a PRNGD/EGD port and socket]) + fi + if test ! -r "$withval" ; then + AC_MSG_WARN([Entropy socket is not readable]) + fi + PRNGD_SOCKET="$withval" + AC_DEFINE_UNQUOTED([PRNGD_SOCKET], ["$PRNGD_SOCKET"], + [Location of PRNGD/EGD random number socket]) + fi + ], + [ + # Check for existing socket only if we don't have a random device already + if test "x$OPENSSL_SEEDS_ITSELF" != "xyes" ; then + AC_MSG_CHECKING([for PRNGD/EGD socket]) + # Insert other locations here + for sock in /var/run/egd-pool /dev/egd-pool /etc/entropy; do + if test -r $sock && $TEST_MINUS_S_SH -c "test -S $sock -o -p $sock" ; then + PRNGD_SOCKET="$sock" + AC_DEFINE_UNQUOTED([PRNGD_SOCKET], ["$PRNGD_SOCKET"]) + break; + fi + done + if test ! -z "$PRNGD_SOCKET" ; then + AC_MSG_RESULT([$PRNGD_SOCKET]) + else + AC_MSG_RESULT([not found]) + fi + fi + ] +) + +# Which randomness source do we use? +if test ! -z "$PRNGD_PORT" ; then + RAND_MSG="PRNGd port $PRNGD_PORT" +elif test ! -z "$PRNGD_SOCKET" ; then + RAND_MSG="PRNGd socket $PRNGD_SOCKET" +elif test ! -z "$OPENSSL_SEEDS_ITSELF" ; then + AC_DEFINE([OPENSSL_PRNG_ONLY], [1], + [Define if you want the OpenSSL internally seeded PRNG only]) + RAND_MSG="OpenSSL internal ONLY" +elif test "x$openssl" = "xno" ; then + AC_MSG_WARN([OpenSSH will use /dev/urandom as a source of random numbers. It will fail if this device is not supported or accessible]) +else + AC_MSG_ERROR([OpenSSH has no source of random numbers. Please configure OpenSSL with an entropy source or re-run configure using one of the --with-prngd-port or --with-prngd-socket options]) +fi +LIBS="$nocrypto_saved_LIBS" + +saved_LIBS="$LIBS" +AC_CHECK_LIB([iaf], [ia_openinfo], [ + LIBS="$LIBS -liaf" + AC_CHECK_FUNCS([set_id], [SSHDLIBS="$SSHDLIBS -liaf" + AC_DEFINE([HAVE_LIBIAF], [1], + [Define if system has libiaf that supports set_id]) + ]) +]) +LIBS="$saved_LIBS" + +# Check for crypt() in libcrypt. If we have it, we only need it for sshd. +saved_LIBS="$LIBS" +AC_CHECK_LIB([crypt], [crypt], [ + LIBS="-lcrypt $LIBS" + SSHDLIBS="-lcrypt $SSHDLIBS" +]) +AC_CHECK_FUNCS([crypt]) +LIBS="$saved_LIBS" + +# Check for PAM libs +PAM_MSG="no" +AC_ARG_WITH([pam], + [ --with-pam Enable PAM support ], + [ + if test "x$withval" != "xno" ; then + if test "x$ac_cv_header_security_pam_appl_h" != "xyes" && \ + test "x$ac_cv_header_pam_pam_appl_h" != "xyes" ; then + AC_MSG_ERROR([PAM headers not found]) + fi + + saved_LIBS="$LIBS" + AC_CHECK_LIB([dl], [dlopen], , ) + AC_CHECK_LIB([pam], [pam_set_item], , [AC_MSG_ERROR([*** libpam missing])]) + AC_CHECK_FUNCS([pam_getenvlist]) + AC_CHECK_FUNCS([pam_putenv]) + LIBS="$saved_LIBS" + + PAM_MSG="yes" + + SSHDLIBS="$SSHDLIBS -lpam" + AC_DEFINE([USE_PAM], [1], + [Define if you want to enable PAM support]) + + if test $ac_cv_lib_dl_dlopen = yes; then + case "$LIBS" in + *-ldl*) + # libdl already in LIBS + ;; + *) + SSHDLIBS="$SSHDLIBS -ldl" + ;; + esac + fi + fi + ] +) + +AC_ARG_WITH([pam-service], + [ --with-pam-service=name Specify PAM service name ], + [ + if test "x$withval" != "xno" && \ + test "x$withval" != "xyes" ; then + AC_DEFINE_UNQUOTED([SSHD_PAM_SERVICE], + ["$withval"], [sshd PAM service name]) + fi + ] +) + +# Check for older PAM +if test "x$PAM_MSG" = "xyes" ; then + # Check PAM strerror arguments (old PAM) + AC_MSG_CHECKING([whether pam_strerror takes only one argument]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <stdlib.h> +#if defined(HAVE_SECURITY_PAM_APPL_H) +#include <security/pam_appl.h> +#elif defined (HAVE_PAM_PAM_APPL_H) +#include <pam/pam_appl.h> +#endif + ]], [[ +(void)pam_strerror((pam_handle_t *)NULL, -1); + ]])], [AC_MSG_RESULT([no])], [ + AC_DEFINE([HAVE_OLD_PAM], [1], + [Define if you have an old version of PAM + which takes only one argument to pam_strerror]) + AC_MSG_RESULT([yes]) + PAM_MSG="yes (old library)" + + ]) +fi + +case "$host" in +*-*-cygwin*) + SSH_PRIVSEP_USER=CYGWIN_SSH_PRIVSEP_USER + ;; +*) + SSH_PRIVSEP_USER=sshd + ;; +esac +AC_ARG_WITH([privsep-user], + [ --with-privsep-user=user Specify non-privileged user for privilege separation], + [ + if test -n "$withval" && test "x$withval" != "xno" && \ + test "x${withval}" != "xyes"; then + SSH_PRIVSEP_USER=$withval + fi + ] +) +if test "x$SSH_PRIVSEP_USER" = "xCYGWIN_SSH_PRIVSEP_USER" ; then + AC_DEFINE_UNQUOTED([SSH_PRIVSEP_USER], [CYGWIN_SSH_PRIVSEP_USER], + [Cygwin function to fetch non-privileged user for privilege separation]) +else + AC_DEFINE_UNQUOTED([SSH_PRIVSEP_USER], ["$SSH_PRIVSEP_USER"], + [non-privileged user for privilege separation]) +fi +AC_SUBST([SSH_PRIVSEP_USER]) + +if test "x$have_linux_no_new_privs" = "x1" ; then +AC_CHECK_DECL([SECCOMP_MODE_FILTER], [have_seccomp_filter=1], , [ + #include <sys/types.h> + #include <linux/seccomp.h> +]) +fi +if test "x$have_seccomp_filter" = "x1" ; then +AC_MSG_CHECKING([kernel for seccomp_filter support]) +AC_LINK_IFELSE([AC_LANG_PROGRAM([[ + #include <errno.h> + #include <elf.h> + #include <linux/audit.h> + #include <linux/seccomp.h> + #include <stdlib.h> + #include <sys/prctl.h> + ]], + [[ int i = $seccomp_audit_arch; + errno = 0; + prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, NULL, 0, 0); + exit(errno == EFAULT ? 0 : 1); ]])], + [ AC_MSG_RESULT([yes]) ], [ + AC_MSG_RESULT([no]) + # Disable seccomp filter as a target + have_seccomp_filter=0 + ] +) +fi + +AC_CHECK_MEMBERS([struct pollfd.fd], [], [], [[ +#include <sys/types.h> +#ifdef HAVE_POLL_H +#include <poll.h> +#endif +#ifdef HAVE_SYS_POLL_H +#include <sys/poll.h> +#endif +]]) + +AC_CHECK_TYPES([nfds_t], , , [ +#include <sys/types.h> +#ifdef HAVE_POLL_H +#include <poll.h> +#endif +#ifdef HAVE_SYS_POLL_H +#include <sys/poll.h> +#endif +]) + +# Decide which sandbox style to use +sandbox_arg="" +AC_ARG_WITH([sandbox], + [ --with-sandbox=style Specify privilege separation sandbox (no, capsicum, darwin, rlimit, seccomp_filter, systrace, pledge)], + [ + if test "x$withval" = "xyes" ; then + sandbox_arg="" + else + sandbox_arg="$withval" + fi + ] +) + +if test "x$sandbox_arg" != "xno"; then +# POSIX specifies that poll() "shall fail with EINVAL if the nfds argument +# is greater than OPEN_MAX". On some platforms that includes implementions +# of select in userspace on top of poll() so check both work with rlimit +# NOFILES so check that both work before enabling the rlimit sandbox. + AC_MSG_CHECKING([if select and/or poll works with descriptor rlimit]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ +#include <sys/types.h> +#ifdef HAVE_SYS_TIME_H +# include <sys/time.h> +#endif +#include <sys/resource.h> +#ifdef HAVE_SYS_SELECT_H +# include <sys/select.h> +#endif +#ifdef HAVE_POLL_H +# include <poll.h> +#elif HAVE_SYS_POLL_H +# include <sys/poll.h> +#endif +#include <errno.h> +#include <fcntl.h> +#include <stdlib.h> + ]],[[ + struct rlimit rl_zero; + int fd, r; + fd_set fds; + struct timeval tv; +#ifdef HAVE_POLL + struct pollfd pfd; +#endif + + fd = open("/dev/null", O_RDONLY); + FD_ZERO(&fds); + FD_SET(fd, &fds); + rl_zero.rlim_cur = rl_zero.rlim_max = 0; + setrlimit(RLIMIT_FSIZE, &rl_zero); + setrlimit(RLIMIT_NOFILE, &rl_zero); + tv.tv_sec = 1; + tv.tv_usec = 0; + r = select(fd+1, &fds, NULL, NULL, &tv); + if (r == -1) + exit(1); +#ifdef HAVE_POLL + pfd.fd = fd; + pfd.events = POLLIN; + r = poll(&pfd, 1, 1); + if (r == -1) + exit(2); +#endif + exit(0); + ]])], + [AC_MSG_RESULT([yes]) + select_works_with_rlimit=yes], + [AC_MSG_RESULT([no]) + select_works_with_rlimit=no], + [AC_MSG_WARN([cross compiling: assuming no]) + select_works_with_rlimit=no] + ) + + AC_MSG_CHECKING([if setrlimit(RLIMIT_NOFILE,{0,0}) works]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ +#include <sys/types.h> +#ifdef HAVE_SYS_TIME_H +# include <sys/time.h> +#endif +#include <sys/resource.h> +#include <errno.h> +#include <stdlib.h> + ]],[[ + struct rlimit rl_zero; + int r; + + rl_zero.rlim_cur = rl_zero.rlim_max = 0; + r = setrlimit(RLIMIT_NOFILE, &rl_zero); + exit (r == -1 ? 1 : 0); + ]])], + [AC_MSG_RESULT([yes]) + rlimit_nofile_zero_works=yes], + [AC_MSG_RESULT([no]) + rlimit_nofile_zero_works=no], + [AC_MSG_WARN([cross compiling: assuming yes]) + rlimit_nofile_zero_works=yes] + ) + + AC_MSG_CHECKING([if setrlimit RLIMIT_FSIZE works]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/resource.h> +#include <stdlib.h> + ]],[[ + struct rlimit rl_zero; + + rl_zero.rlim_cur = rl_zero.rlim_max = 0; + exit(setrlimit(RLIMIT_FSIZE, &rl_zero) != 0); + ]])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + AC_DEFINE(SANDBOX_SKIP_RLIMIT_FSIZE, 1, + [setrlimit RLIMIT_FSIZE works])], + [AC_MSG_WARN([cross compiling: assuming yes])] + ) +fi + +if test "x$sandbox_arg" = "xpledge" || \ + ( test -z "$sandbox_arg" && test "x$ac_cv_func_pledge" = "xyes" ) ; then + test "x$ac_cv_func_pledge" != "xyes" && \ + AC_MSG_ERROR([pledge sandbox requires pledge(2) support]) + SANDBOX_STYLE="pledge" + AC_DEFINE([SANDBOX_PLEDGE], [1], [Sandbox using pledge(2)]) +elif test "x$sandbox_arg" = "xsystrace" || \ + ( test -z "$sandbox_arg" && test "x$have_systr_policy_kill" = "x1" ) ; then + test "x$have_systr_policy_kill" != "x1" && \ + AC_MSG_ERROR([systrace sandbox requires systrace headers and SYSTR_POLICY_KILL support]) + SANDBOX_STYLE="systrace" + AC_DEFINE([SANDBOX_SYSTRACE], [1], [Sandbox using systrace(4)]) +elif test "x$sandbox_arg" = "xdarwin" || \ + ( test -z "$sandbox_arg" && test "x$ac_cv_func_sandbox_init" = "xyes" && \ + test "x$ac_cv_header_sandbox_h" = "xyes") ; then + test "x$ac_cv_func_sandbox_init" != "xyes" -o \ + "x$ac_cv_header_sandbox_h" != "xyes" && \ + AC_MSG_ERROR([Darwin seatbelt sandbox requires sandbox.h and sandbox_init function]) + SANDBOX_STYLE="darwin" + AC_DEFINE([SANDBOX_DARWIN], [1], [Sandbox using Darwin sandbox_init(3)]) +elif test "x$sandbox_arg" = "xseccomp_filter" || \ + ( test -z "$sandbox_arg" && \ + test "x$have_seccomp_filter" = "x1" && \ + test "x$ac_cv_header_elf_h" = "xyes" && \ + test "x$ac_cv_header_linux_audit_h" = "xyes" && \ + test "x$ac_cv_header_linux_filter_h" = "xyes" && \ + test "x$seccomp_audit_arch" != "x" && \ + test "x$have_linux_no_new_privs" = "x1" && \ + test "x$ac_cv_func_prctl" = "xyes" ) ; then + test "x$seccomp_audit_arch" = "x" && \ + AC_MSG_ERROR([seccomp_filter sandbox not supported on $host]) + test "x$have_linux_no_new_privs" != "x1" && \ + AC_MSG_ERROR([seccomp_filter sandbox requires PR_SET_NO_NEW_PRIVS]) + test "x$have_seccomp_filter" != "x1" && \ + AC_MSG_ERROR([seccomp_filter sandbox requires seccomp headers]) + test "x$ac_cv_func_prctl" != "xyes" && \ + AC_MSG_ERROR([seccomp_filter sandbox requires prctl function]) + SANDBOX_STYLE="seccomp_filter" + AC_DEFINE([SANDBOX_SECCOMP_FILTER], [1], [Sandbox using seccomp filter]) +elif test "x$sandbox_arg" = "xcapsicum" || \ + ( test -z "$sandbox_arg" && \ + test "x$disable_capsicum" != "xyes" && \ + test "x$ac_cv_header_sys_capsicum_h" = "xyes" && \ + test "x$ac_cv_func_cap_rights_limit" = "xyes") ; then + test "x$ac_cv_header_sys_capsicum_h" != "xyes" && \ + AC_MSG_ERROR([capsicum sandbox requires sys/capsicum.h header]) + test "x$ac_cv_func_cap_rights_limit" != "xyes" && \ + AC_MSG_ERROR([capsicum sandbox requires cap_rights_limit function]) + SANDBOX_STYLE="capsicum" + AC_DEFINE([SANDBOX_CAPSICUM], [1], [Sandbox using capsicum]) +elif test "x$sandbox_arg" = "xrlimit" || \ + ( test -z "$sandbox_arg" && test "x$ac_cv_func_setrlimit" = "xyes" && \ + test "x$select_works_with_rlimit" = "xyes" && \ + test "x$rlimit_nofile_zero_works" = "xyes" ) ; then + test "x$ac_cv_func_setrlimit" != "xyes" && \ + AC_MSG_ERROR([rlimit sandbox requires setrlimit function]) + test "x$select_works_with_rlimit" != "xyes" && \ + AC_MSG_ERROR([rlimit sandbox requires select to work with rlimit]) + SANDBOX_STYLE="rlimit" + AC_DEFINE([SANDBOX_RLIMIT], [1], [Sandbox using setrlimit(2)]) +elif test "x$sandbox_arg" = "xsolaris" || \ + ( test -z "$sandbox_arg" && test "x$SOLARIS_PRIVS" = "xyes" ) ; then + SANDBOX_STYLE="solaris" + AC_DEFINE([SANDBOX_SOLARIS], [1], [Sandbox using Solaris/Illumos privileges]) +elif test -z "$sandbox_arg" || test "x$sandbox_arg" = "xno" || \ + test "x$sandbox_arg" = "xnone" || test "x$sandbox_arg" = "xnull" ; then + SANDBOX_STYLE="none" + AC_DEFINE([SANDBOX_NULL], [1], [no privsep sandboxing]) +else + AC_MSG_ERROR([unsupported --with-sandbox]) +fi + +# Cheap hack to ensure NEWS-OS libraries are arranged right. +if test ! -z "$SONY" ; then + LIBS="$LIBS -liberty"; +fi + +# Check for long long datatypes +AC_CHECK_TYPES([long long, unsigned long long, long double]) + +# Check datatype sizes +AC_CHECK_SIZEOF([short int]) +AC_CHECK_SIZEOF([int]) +AC_CHECK_SIZEOF([long int]) +AC_CHECK_SIZEOF([long long int]) +AC_CHECK_SIZEOF([time_t], [], [[ + #include <sys/types.h> + #ifdef HAVE_SYS_TIME_H + # include <sys/time.h> + #endif + #ifdef HAVE_TIME_H + # include <time.h> + #endif + ]] +) + +# Sanity check long long for some platforms (AIX) +if test "x$ac_cv_sizeof_long_long_int" = "x4" ; then + ac_cv_sizeof_long_long_int=0 +fi + +# compute LLONG_MIN and LLONG_MAX if we don't know them. +if test -z "$have_llong_max" && test -z "$have_long_long_max"; then + AC_MSG_CHECKING([for max value of long long]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ +#include <stdio.h> +#include <stdlib.h> +/* Why is this so damn hard? */ +#ifdef __GNUC__ +# undef __GNUC__ +#endif +#define __USE_ISOC99 +#include <limits.h> +#define DATA "conftest.llminmax" +#define my_abs(a) ((a) < 0 ? ((a) * -1) : (a)) + +/* + * printf in libc on some platforms (eg old Tru64) does not understand %lld so + * we do this the hard way. + */ +static int +fprint_ll(FILE *f, long long n) +{ + unsigned int i; + int l[sizeof(long long) * 8]; + + if (n < 0) + if (fprintf(f, "-") < 0) + return -1; + for (i = 0; n != 0; i++) { + l[i] = my_abs(n % 10); + n /= 10; + } + do { + if (fprintf(f, "%d", l[--i]) < 0) + return -1; + } while (i != 0); + if (fprintf(f, " ") < 0) + return -1; + return 0; +} + ]], [[ + FILE *f; + long long i, llmin, llmax = 0; + + if((f = fopen(DATA,"w")) == NULL) + exit(1); + +#if defined(LLONG_MIN) && defined(LLONG_MAX) + fprintf(stderr, "Using system header for LLONG_MIN and LLONG_MAX\n"); + llmin = LLONG_MIN; + llmax = LLONG_MAX; +#else + fprintf(stderr, "Calculating LLONG_MIN and LLONG_MAX\n"); + /* This will work on one's complement and two's complement */ + for (i = 1; i > llmax; i <<= 1, i++) + llmax = i; + llmin = llmax + 1LL; /* wrap */ +#endif + + /* Sanity check */ + if (llmin + 1 < llmin || llmin - 1 < llmin || llmax + 1 > llmax + || llmax - 1 > llmax || llmin == llmax || llmin == 0 + || llmax == 0 || llmax < LONG_MAX || llmin > LONG_MIN) { + fprintf(f, "unknown unknown\n"); + exit(2); + } + + if (fprint_ll(f, llmin) < 0) + exit(3); + if (fprint_ll(f, llmax) < 0) + exit(4); + if (fclose(f) < 0) + exit(5); + exit(0); + ]])], + [ + llong_min=`$AWK '{print $1}' conftest.llminmax` + llong_max=`$AWK '{print $2}' conftest.llminmax` + + AC_MSG_RESULT([$llong_max]) + AC_DEFINE_UNQUOTED([LLONG_MAX], [${llong_max}LL], + [max value of long long calculated by configure]) + AC_MSG_CHECKING([for min value of long long]) + AC_MSG_RESULT([$llong_min]) + AC_DEFINE_UNQUOTED([LLONG_MIN], [${llong_min}LL], + [min value of long long calculated by configure]) + ], + [ + AC_MSG_RESULT([not found]) + ], + [ + AC_MSG_WARN([cross compiling: not checking]) + ] + ) +fi + +AC_CHECK_DECLS([UINT32_MAX], , , [[ +#ifdef HAVE_SYS_LIMITS_H +# include <sys/limits.h> +#endif +#ifdef HAVE_LIMITS_H +# include <limits.h> +#endif +#ifdef HAVE_STDINT_H +# include <stdint.h> +#endif +]]) + +# More checks for data types +AC_CACHE_CHECK([for u_int type], ac_cv_have_u_int, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]], + [[ u_int a; a = 1;]])], + [ ac_cv_have_u_int="yes" ], [ ac_cv_have_u_int="no" + ]) +]) +if test "x$ac_cv_have_u_int" = "xyes" ; then + AC_DEFINE([HAVE_U_INT], [1], [define if you have u_int data type]) + have_u_int=1 +fi + +AC_CACHE_CHECK([for intXX_t types], ac_cv_have_intxx_t, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]], + [[ int8_t a; int16_t b; int32_t c; a = b = c = 1;]])], + [ ac_cv_have_intxx_t="yes" ], [ ac_cv_have_intxx_t="no" + ]) +]) +if test "x$ac_cv_have_intxx_t" = "xyes" ; then + AC_DEFINE([HAVE_INTXX_T], [1], [define if you have intxx_t data type]) + have_intxx_t=1 +fi + +if (test -z "$have_intxx_t" && \ + test "x$ac_cv_header_stdint_h" = "xyes") +then + AC_MSG_CHECKING([for intXX_t types in stdint.h]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <stdint.h> ]], + [[ int8_t a; int16_t b; int32_t c; a = b = c = 1;]])], + [ + AC_DEFINE([HAVE_INTXX_T]) + AC_MSG_RESULT([yes]) + ], [ AC_MSG_RESULT([no]) + ]) +fi + +AC_CACHE_CHECK([for int64_t type], ac_cv_have_int64_t, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#ifdef HAVE_STDINT_H +# include <stdint.h> +#endif +#include <sys/socket.h> +#ifdef HAVE_SYS_BITYPES_H +# include <sys/bitypes.h> +#endif + ]], [[ +int64_t a; a = 1; + ]])], + [ ac_cv_have_int64_t="yes" ], [ ac_cv_have_int64_t="no" + ]) +]) +if test "x$ac_cv_have_int64_t" = "xyes" ; then + AC_DEFINE([HAVE_INT64_T], [1], [define if you have int64_t data type]) +fi + +AC_CACHE_CHECK([for u_intXX_t types], ac_cv_have_u_intxx_t, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]], + [[ u_int8_t a; u_int16_t b; u_int32_t c; a = b = c = 1;]])], + [ ac_cv_have_u_intxx_t="yes" ], [ ac_cv_have_u_intxx_t="no" + ]) +]) +if test "x$ac_cv_have_u_intxx_t" = "xyes" ; then + AC_DEFINE([HAVE_U_INTXX_T], [1], [define if you have u_intxx_t data type]) + have_u_intxx_t=1 +fi + +if test -z "$have_u_intxx_t" ; then + AC_MSG_CHECKING([for u_intXX_t types in sys/socket.h]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/socket.h> ]], + [[ u_int8_t a; u_int16_t b; u_int32_t c; a = b = c = 1;]])], + [ + AC_DEFINE([HAVE_U_INTXX_T]) + AC_MSG_RESULT([yes]) + ], [ AC_MSG_RESULT([no]) + ]) +fi + +AC_CACHE_CHECK([for u_int64_t types], ac_cv_have_u_int64_t, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]], + [[ u_int64_t a; a = 1;]])], + [ ac_cv_have_u_int64_t="yes" ], [ ac_cv_have_u_int64_t="no" + ]) +]) +if test "x$ac_cv_have_u_int64_t" = "xyes" ; then + AC_DEFINE([HAVE_U_INT64_T], [1], [define if you have u_int64_t data type]) + have_u_int64_t=1 +fi + +if (test -z "$have_u_int64_t" && \ + test "x$ac_cv_header_sys_bitypes_h" = "xyes") +then + AC_MSG_CHECKING([for u_int64_t type in sys/bitypes.h]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/bitypes.h> ]], + [[ u_int64_t a; a = 1]])], + [ + AC_DEFINE([HAVE_U_INT64_T]) + AC_MSG_RESULT([yes]) + ], [ AC_MSG_RESULT([no]) + ]) +fi + +if test -z "$have_u_intxx_t" ; then + AC_CACHE_CHECK([for uintXX_t types], ac_cv_have_uintxx_t, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> + ]], [[ + uint8_t a; + uint16_t b; + uint32_t c; + a = b = c = 1; + ]])], + [ ac_cv_have_uintxx_t="yes" ], [ ac_cv_have_uintxx_t="no" + ]) + ]) + if test "x$ac_cv_have_uintxx_t" = "xyes" ; then + AC_DEFINE([HAVE_UINTXX_T], [1], + [define if you have uintxx_t data type]) + fi +fi + +if (test -z "$have_uintxx_t" && \ + test "x$ac_cv_header_stdint_h" = "xyes") +then + AC_MSG_CHECKING([for uintXX_t types in stdint.h]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <stdint.h> ]], + [[ uint8_t a; uint16_t b; uint32_t c; a = b = c = 1;]])], + [ + AC_DEFINE([HAVE_UINTXX_T]) + AC_MSG_RESULT([yes]) + ], [ AC_MSG_RESULT([no]) + ]) +fi + +if (test -z "$have_uintxx_t" && \ + test "x$ac_cv_header_inttypes_h" = "xyes") +then + AC_MSG_CHECKING([for uintXX_t types in inttypes.h]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <inttypes.h> ]], + [[ uint8_t a; uint16_t b; uint32_t c; a = b = c = 1;]])], + [ + AC_DEFINE([HAVE_UINTXX_T]) + AC_MSG_RESULT([yes]) + ], [ AC_MSG_RESULT([no]) + ]) +fi + +if (test -z "$have_u_intxx_t" || test -z "$have_intxx_t" && \ + test "x$ac_cv_header_sys_bitypes_h" = "xyes") +then + AC_MSG_CHECKING([for intXX_t and u_intXX_t types in sys/bitypes.h]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/bitypes.h> + ]], [[ + int8_t a; int16_t b; int32_t c; + u_int8_t e; u_int16_t f; u_int32_t g; + a = b = c = e = f = g = 1; + ]])], + [ + AC_DEFINE([HAVE_U_INTXX_T]) + AC_DEFINE([HAVE_INTXX_T]) + AC_MSG_RESULT([yes]) + ], [AC_MSG_RESULT([no]) + ]) +fi + + +AC_CACHE_CHECK([for u_char], ac_cv_have_u_char, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]], + [[ u_char foo; foo = 125; ]])], + [ ac_cv_have_u_char="yes" ], [ ac_cv_have_u_char="no" + ]) +]) +if test "x$ac_cv_have_u_char" = "xyes" ; then + AC_DEFINE([HAVE_U_CHAR], [1], [define if you have u_char data type]) +fi + +AC_CHECK_TYPES([intmax_t, uintmax_t], , , [ +#include <sys/types.h> +#ifdef HAVE_STDINT_H +# include <stdint.h> +#endif +]) + +TYPE_SOCKLEN_T + +AC_CHECK_TYPES([sig_atomic_t, sighandler_t], , , [#include <signal.h>]) +AC_CHECK_TYPES([fsblkcnt_t, fsfilcnt_t], , , [ +#include <sys/types.h> +#ifdef HAVE_SYS_BITYPES_H +#include <sys/bitypes.h> +#endif +#ifdef HAVE_SYS_STATFS_H +#include <sys/statfs.h> +#endif +#ifdef HAVE_SYS_STATVFS_H +#include <sys/statvfs.h> +#endif +]) + +AC_CHECK_MEMBERS([struct statfs.f_files, struct statfs.f_flags], [], [], [[ +#include <sys/param.h> +#include <sys/types.h> +#ifdef HAVE_SYS_BITYPES_H +#include <sys/bitypes.h> +#endif +#ifdef HAVE_SYS_STATFS_H +#include <sys/statfs.h> +#endif +#ifdef HAVE_SYS_STATVFS_H +#include <sys/statvfs.h> +#endif +#ifdef HAVE_SYS_VFS_H +#include <sys/vfs.h> +#endif +#ifdef HAVE_SYS_MOUNT_H +#include <sys/mount.h> +#endif +]]) + + +AC_CHECK_TYPES([in_addr_t, in_port_t], , , +[#include <sys/types.h> +#include <netinet/in.h>]) + +AC_CACHE_CHECK([for size_t], ac_cv_have_size_t, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]], + [[ size_t foo; foo = 1235; ]])], + [ ac_cv_have_size_t="yes" ], [ ac_cv_have_size_t="no" + ]) +]) +if test "x$ac_cv_have_size_t" = "xyes" ; then + AC_DEFINE([HAVE_SIZE_T], [1], [define if you have size_t data type]) +fi + +AC_CACHE_CHECK([for ssize_t], ac_cv_have_ssize_t, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]], + [[ ssize_t foo; foo = 1235; ]])], + [ ac_cv_have_ssize_t="yes" ], [ ac_cv_have_ssize_t="no" + ]) +]) +if test "x$ac_cv_have_ssize_t" = "xyes" ; then + AC_DEFINE([HAVE_SSIZE_T], [1], [define if you have ssize_t data type]) +fi + +AC_CACHE_CHECK([for clock_t], ac_cv_have_clock_t, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <time.h> ]], + [[ clock_t foo; foo = 1235; ]])], + [ ac_cv_have_clock_t="yes" ], [ ac_cv_have_clock_t="no" + ]) +]) +if test "x$ac_cv_have_clock_t" = "xyes" ; then + AC_DEFINE([HAVE_CLOCK_T], [1], [define if you have clock_t data type]) +fi + +AC_CACHE_CHECK([for sa_family_t], ac_cv_have_sa_family_t, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/socket.h> + ]], [[ sa_family_t foo; foo = 1235; ]])], + [ ac_cv_have_sa_family_t="yes" ], + [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> + ]], [[ sa_family_t foo; foo = 1235; ]])], + [ ac_cv_have_sa_family_t="yes" ], + [ ac_cv_have_sa_family_t="no" ] + ) + ]) +]) +if test "x$ac_cv_have_sa_family_t" = "xyes" ; then + AC_DEFINE([HAVE_SA_FAMILY_T], [1], + [define if you have sa_family_t data type]) +fi + +AC_CACHE_CHECK([for pid_t], ac_cv_have_pid_t, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]], + [[ pid_t foo; foo = 1235; ]])], + [ ac_cv_have_pid_t="yes" ], [ ac_cv_have_pid_t="no" + ]) +]) +if test "x$ac_cv_have_pid_t" = "xyes" ; then + AC_DEFINE([HAVE_PID_T], [1], [define if you have pid_t data type]) +fi + +AC_CACHE_CHECK([for mode_t], ac_cv_have_mode_t, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]], + [[ mode_t foo; foo = 1235; ]])], + [ ac_cv_have_mode_t="yes" ], [ ac_cv_have_mode_t="no" + ]) +]) +if test "x$ac_cv_have_mode_t" = "xyes" ; then + AC_DEFINE([HAVE_MODE_T], [1], [define if you have mode_t data type]) +fi + + +AC_CACHE_CHECK([for struct sockaddr_storage], ac_cv_have_struct_sockaddr_storage, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/socket.h> + ]], [[ struct sockaddr_storage s; ]])], + [ ac_cv_have_struct_sockaddr_storage="yes" ], + [ ac_cv_have_struct_sockaddr_storage="no" + ]) +]) +if test "x$ac_cv_have_struct_sockaddr_storage" = "xyes" ; then + AC_DEFINE([HAVE_STRUCT_SOCKADDR_STORAGE], [1], + [define if you have struct sockaddr_storage data type]) +fi + +AC_CACHE_CHECK([for struct sockaddr_in6], ac_cv_have_struct_sockaddr_in6, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <netinet/in.h> + ]], [[ struct sockaddr_in6 s; s.sin6_family = 0; ]])], + [ ac_cv_have_struct_sockaddr_in6="yes" ], + [ ac_cv_have_struct_sockaddr_in6="no" + ]) +]) +if test "x$ac_cv_have_struct_sockaddr_in6" = "xyes" ; then + AC_DEFINE([HAVE_STRUCT_SOCKADDR_IN6], [1], + [define if you have struct sockaddr_in6 data type]) +fi + +AC_CACHE_CHECK([for struct in6_addr], ac_cv_have_struct_in6_addr, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <netinet/in.h> + ]], [[ struct in6_addr s; s.s6_addr[0] = 0; ]])], + [ ac_cv_have_struct_in6_addr="yes" ], + [ ac_cv_have_struct_in6_addr="no" + ]) +]) +if test "x$ac_cv_have_struct_in6_addr" = "xyes" ; then + AC_DEFINE([HAVE_STRUCT_IN6_ADDR], [1], + [define if you have struct in6_addr data type]) + +dnl Now check for sin6_scope_id + AC_CHECK_MEMBERS([struct sockaddr_in6.sin6_scope_id], , , + [ +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#include <netinet/in.h> + ]) +fi + +AC_CACHE_CHECK([for struct addrinfo], ac_cv_have_struct_addrinfo, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/socket.h> +#include <netdb.h> + ]], [[ struct addrinfo s; s.ai_flags = AI_PASSIVE; ]])], + [ ac_cv_have_struct_addrinfo="yes" ], + [ ac_cv_have_struct_addrinfo="no" + ]) +]) +if test "x$ac_cv_have_struct_addrinfo" = "xyes" ; then + AC_DEFINE([HAVE_STRUCT_ADDRINFO], [1], + [define if you have struct addrinfo data type]) +fi + +AC_CACHE_CHECK([for struct timeval], ac_cv_have_struct_timeval, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/time.h> ]], + [[ struct timeval tv; tv.tv_sec = 1;]])], + [ ac_cv_have_struct_timeval="yes" ], + [ ac_cv_have_struct_timeval="no" + ]) +]) +if test "x$ac_cv_have_struct_timeval" = "xyes" ; then + AC_DEFINE([HAVE_STRUCT_TIMEVAL], [1], [define if you have struct timeval]) + have_struct_timeval=1 +fi + +AC_CACHE_CHECK([for struct timespec], ac_cv_have_struct_timespec, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ + #ifdef HAVE_SYS_TIME_H + # include <sys/time.h> + #endif + #ifdef HAVE_TIME_H + # include <time.h> + #endif + ]], + [[ struct timespec ts; ts.tv_sec = 1;]])], + [ ac_cv_have_struct_timespec="yes" ], + [ ac_cv_have_struct_timespec="no" + ]) +]) +if test "x$ac_cv_have_struct_timespec" = "xyes" ; then + AC_DEFINE([HAVE_STRUCT_TIMESPEC], [1], [define if you have struct timespec]) + have_struct_timespec=1 +fi + +# We need int64_t or else certain parts of the compile will fail. +if test "x$ac_cv_have_int64_t" = "xno" && \ + test "x$ac_cv_sizeof_long_int" != "x8" && \ + test "x$ac_cv_sizeof_long_long_int" = "x0" ; then + echo "OpenSSH requires int64_t support. Contact your vendor or install" + echo "an alternative compiler (I.E., GCC) before continuing." + echo "" + exit 1; +else +dnl test snprintf (broken on SCO w/gcc) + AC_RUN_IFELSE( + [AC_LANG_SOURCE([[ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#ifdef HAVE_SNPRINTF +int main(void) +{ + char buf[50]; + char expected_out[50]; + int mazsize = 50 ; +#if (SIZEOF_LONG_INT == 8) + long int num = 0x7fffffffffffffff; +#else + long long num = 0x7fffffffffffffffll; +#endif + strcpy(expected_out, "9223372036854775807"); + snprintf(buf, mazsize, "%lld", num); + if(strcmp(buf, expected_out) != 0) + exit(1); + exit(0); +} +#else +int main(void) { exit(0); } +#endif + ]])], [ true ], [ AC_DEFINE([BROKEN_SNPRINTF]) ], + AC_MSG_WARN([cross compiling: Assuming working snprintf()]) + ) +fi + +dnl Checks for structure members +OSSH_CHECK_HEADER_FOR_FIELD([ut_host], [utmp.h], [HAVE_HOST_IN_UTMP]) +OSSH_CHECK_HEADER_FOR_FIELD([ut_host], [utmpx.h], [HAVE_HOST_IN_UTMPX]) +OSSH_CHECK_HEADER_FOR_FIELD([syslen], [utmpx.h], [HAVE_SYSLEN_IN_UTMPX]) +OSSH_CHECK_HEADER_FOR_FIELD([ut_pid], [utmp.h], [HAVE_PID_IN_UTMP]) +OSSH_CHECK_HEADER_FOR_FIELD([ut_type], [utmp.h], [HAVE_TYPE_IN_UTMP]) +OSSH_CHECK_HEADER_FOR_FIELD([ut_type], [utmpx.h], [HAVE_TYPE_IN_UTMPX]) +OSSH_CHECK_HEADER_FOR_FIELD([ut_tv], [utmp.h], [HAVE_TV_IN_UTMP]) +OSSH_CHECK_HEADER_FOR_FIELD([ut_id], [utmp.h], [HAVE_ID_IN_UTMP]) +OSSH_CHECK_HEADER_FOR_FIELD([ut_id], [utmpx.h], [HAVE_ID_IN_UTMPX]) +OSSH_CHECK_HEADER_FOR_FIELD([ut_addr], [utmp.h], [HAVE_ADDR_IN_UTMP]) +OSSH_CHECK_HEADER_FOR_FIELD([ut_addr], [utmpx.h], [HAVE_ADDR_IN_UTMPX]) +OSSH_CHECK_HEADER_FOR_FIELD([ut_addr_v6], [utmp.h], [HAVE_ADDR_V6_IN_UTMP]) +OSSH_CHECK_HEADER_FOR_FIELD([ut_addr_v6], [utmpx.h], [HAVE_ADDR_V6_IN_UTMPX]) +OSSH_CHECK_HEADER_FOR_FIELD([ut_exit], [utmp.h], [HAVE_EXIT_IN_UTMP]) +OSSH_CHECK_HEADER_FOR_FIELD([ut_time], [utmp.h], [HAVE_TIME_IN_UTMP]) +OSSH_CHECK_HEADER_FOR_FIELD([ut_time], [utmpx.h], [HAVE_TIME_IN_UTMPX]) +OSSH_CHECK_HEADER_FOR_FIELD([ut_tv], [utmpx.h], [HAVE_TV_IN_UTMPX]) +OSSH_CHECK_HEADER_FOR_FIELD([ut_ss], [utmpx.h], [HAVE_SS_IN_UTMPX]) + +AC_CHECK_MEMBERS([struct stat.st_blksize]) +AC_CHECK_MEMBERS([struct stat.st_mtim]) +AC_CHECK_MEMBERS([struct stat.st_mtime]) +AC_CHECK_MEMBERS([struct passwd.pw_gecos, struct passwd.pw_class, +struct passwd.pw_change, struct passwd.pw_expire], +[], [], [[ +#include <sys/types.h> +#include <pwd.h> +]]) + +AC_CHECK_MEMBER([struct __res_state.retrans], [], [AC_DEFINE([__res_state], [state], + [Define if we don't have struct __res_state in resolv.h])], +[[ +#include <stdio.h> +#if HAVE_SYS_TYPES_H +# include <sys/types.h> +#endif +#include <netinet/in.h> +#include <arpa/nameser.h> +#include <resolv.h> +]]) + +AC_CHECK_MEMBER([struct sockaddr_in.sin_len], + [AC_DEFINE([SOCK_HAS_LEN], [1], [sockaddr_in has sin_len])], + [], + [AC_LANG_SOURCE([[ +#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> + ]])] +) + +AC_CACHE_CHECK([for ss_family field in struct sockaddr_storage], + ac_cv_have_ss_family_in_struct_ss, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/socket.h> + ]], [[ struct sockaddr_storage s; s.ss_family = 1; ]])], + [ ac_cv_have_ss_family_in_struct_ss="yes" ], + [ ac_cv_have_ss_family_in_struct_ss="no" ]) +]) +if test "x$ac_cv_have_ss_family_in_struct_ss" = "xyes" ; then + AC_DEFINE([HAVE_SS_FAMILY_IN_SS], [1], [Fields in struct sockaddr_storage]) +fi + +AC_CACHE_CHECK([for __ss_family field in struct sockaddr_storage], + ac_cv_have___ss_family_in_struct_ss, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/socket.h> + ]], [[ struct sockaddr_storage s; s.__ss_family = 1; ]])], + [ ac_cv_have___ss_family_in_struct_ss="yes" ], + [ ac_cv_have___ss_family_in_struct_ss="no" + ]) +]) +if test "x$ac_cv_have___ss_family_in_struct_ss" = "xyes" ; then + AC_DEFINE([HAVE___SS_FAMILY_IN_SS], [1], + [Fields in struct sockaddr_storage]) +fi + +dnl make sure we're using the real structure members and not defines +AC_CACHE_CHECK([for msg_accrights field in struct msghdr], + ac_cv_have_accrights_in_msghdr, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/uio.h> +#include <stdlib.h> + ]], [[ +#ifdef msg_accrights +#error "msg_accrights is a macro" +exit(1); +#endif +struct msghdr m; +m.msg_accrights = 0; +exit(0); + ]])], + [ ac_cv_have_accrights_in_msghdr="yes" ], + [ ac_cv_have_accrights_in_msghdr="no" ] + ) +]) +if test "x$ac_cv_have_accrights_in_msghdr" = "xyes" ; then + AC_DEFINE([HAVE_ACCRIGHTS_IN_MSGHDR], [1], + [Define if your system uses access rights style + file descriptor passing]) +fi + +AC_MSG_CHECKING([if struct statvfs.f_fsid is integral type]) +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/param.h> +#include <sys/stat.h> +#ifdef HAVE_SYS_TIME_H +# include <sys/time.h> +#endif +#ifdef HAVE_SYS_MOUNT_H +#include <sys/mount.h> +#endif +#ifdef HAVE_SYS_STATVFS_H +#include <sys/statvfs.h> +#endif + ]], [[ struct statvfs s; s.f_fsid = 0; ]])], + [ AC_MSG_RESULT([yes]) ], + [ AC_MSG_RESULT([no]) + + AC_MSG_CHECKING([if fsid_t has member val]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/statvfs.h> + ]], [[ fsid_t t; t.val[0] = 0; ]])], + [ AC_MSG_RESULT([yes]) + AC_DEFINE([FSID_HAS_VAL], [1], [fsid_t has member val]) ], + [ AC_MSG_RESULT([no]) ]) + + AC_MSG_CHECKING([if f_fsid has member __val]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/statvfs.h> + ]], [[ fsid_t t; t.__val[0] = 0; ]])], + [ AC_MSG_RESULT([yes]) + AC_DEFINE([FSID_HAS___VAL], [1], [fsid_t has member __val]) ], + [ AC_MSG_RESULT([no]) ]) +]) + +AC_CACHE_CHECK([for msg_control field in struct msghdr], + ac_cv_have_control_in_msghdr, [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/uio.h> +#include <stdlib.h> + ]], [[ +#ifdef msg_control +#error "msg_control is a macro" +exit(1); +#endif +struct msghdr m; +m.msg_control = 0; +exit(0); + ]])], + [ ac_cv_have_control_in_msghdr="yes" ], + [ ac_cv_have_control_in_msghdr="no" ] + ) +]) +if test "x$ac_cv_have_control_in_msghdr" = "xyes" ; then + AC_DEFINE([HAVE_CONTROL_IN_MSGHDR], [1], + [Define if your system uses ancillary data style + file descriptor passing]) +fi + +AC_CACHE_CHECK([if libc defines __progname], ac_cv_libc_defines___progname, [ + AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <stdio.h> ]], + [[ extern char *__progname; printf("%s", __progname); ]])], + [ ac_cv_libc_defines___progname="yes" ], + [ ac_cv_libc_defines___progname="no" + ]) +]) +if test "x$ac_cv_libc_defines___progname" = "xyes" ; then + AC_DEFINE([HAVE___PROGNAME], [1], [Define if libc defines __progname]) +fi + +AC_CACHE_CHECK([whether $CC implements __FUNCTION__], ac_cv_cc_implements___FUNCTION__, [ + AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <stdio.h> ]], + [[ printf("%s", __FUNCTION__); ]])], + [ ac_cv_cc_implements___FUNCTION__="yes" ], + [ ac_cv_cc_implements___FUNCTION__="no" + ]) +]) +if test "x$ac_cv_cc_implements___FUNCTION__" = "xyes" ; then + AC_DEFINE([HAVE___FUNCTION__], [1], + [Define if compiler implements __FUNCTION__]) +fi + +AC_CACHE_CHECK([whether $CC implements __func__], ac_cv_cc_implements___func__, [ + AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <stdio.h> ]], + [[ printf("%s", __func__); ]])], + [ ac_cv_cc_implements___func__="yes" ], + [ ac_cv_cc_implements___func__="no" + ]) +]) +if test "x$ac_cv_cc_implements___func__" = "xyes" ; then + AC_DEFINE([HAVE___func__], [1], [Define if compiler implements __func__]) +fi + +AC_CACHE_CHECK([whether va_copy exists], ac_cv_have_va_copy, [ + AC_LINK_IFELSE([AC_LANG_PROGRAM([[ +#include <stdarg.h> +va_list x,y; + ]], [[ va_copy(x,y); ]])], + [ ac_cv_have_va_copy="yes" ], + [ ac_cv_have_va_copy="no" + ]) +]) +if test "x$ac_cv_have_va_copy" = "xyes" ; then + AC_DEFINE([HAVE_VA_COPY], [1], [Define if va_copy exists]) +fi + +AC_CACHE_CHECK([whether __va_copy exists], ac_cv_have___va_copy, [ + AC_LINK_IFELSE([AC_LANG_PROGRAM([[ +#include <stdarg.h> +va_list x,y; + ]], [[ __va_copy(x,y); ]])], + [ ac_cv_have___va_copy="yes" ], [ ac_cv_have___va_copy="no" + ]) +]) +if test "x$ac_cv_have___va_copy" = "xyes" ; then + AC_DEFINE([HAVE___VA_COPY], [1], [Define if __va_copy exists]) +fi + +AC_CACHE_CHECK([whether getopt has optreset support], + ac_cv_have_getopt_optreset, [ + AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <getopt.h> ]], + [[ extern int optreset; optreset = 0; ]])], + [ ac_cv_have_getopt_optreset="yes" ], + [ ac_cv_have_getopt_optreset="no" + ]) +]) +if test "x$ac_cv_have_getopt_optreset" = "xyes" ; then + AC_DEFINE([HAVE_GETOPT_OPTRESET], [1], + [Define if your getopt(3) defines and uses optreset]) +fi + +AC_CACHE_CHECK([if libc defines sys_errlist], ac_cv_libc_defines_sys_errlist, [ + AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <stdio.h> ]], +[[ extern const char *const sys_errlist[]; printf("%s", sys_errlist[0]);]])], + [ ac_cv_libc_defines_sys_errlist="yes" ], + [ ac_cv_libc_defines_sys_errlist="no" + ]) +]) +if test "x$ac_cv_libc_defines_sys_errlist" = "xyes" ; then + AC_DEFINE([HAVE_SYS_ERRLIST], [1], + [Define if your system defines sys_errlist[]]) +fi + + +AC_CACHE_CHECK([if libc defines sys_nerr], ac_cv_libc_defines_sys_nerr, [ + AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <stdio.h> ]], +[[ extern int sys_nerr; printf("%i", sys_nerr);]])], + [ ac_cv_libc_defines_sys_nerr="yes" ], + [ ac_cv_libc_defines_sys_nerr="no" + ]) +]) +if test "x$ac_cv_libc_defines_sys_nerr" = "xyes" ; then + AC_DEFINE([HAVE_SYS_NERR], [1], [Define if your system defines sys_nerr]) +fi + +# Check libraries needed by DNS fingerprint support +AC_SEARCH_LIBS([getrrsetbyname], [resolv], + [AC_DEFINE([HAVE_GETRRSETBYNAME], [1], + [Define if getrrsetbyname() exists])], + [ + # Needed by our getrrsetbyname() + AC_SEARCH_LIBS([res_query], [resolv]) + AC_SEARCH_LIBS([dn_expand], [resolv]) + AC_MSG_CHECKING([if res_query will link]) + AC_LINK_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <netinet/in.h> +#include <arpa/nameser.h> +#include <netdb.h> +#include <resolv.h> + ]], [[ + res_query (0, 0, 0, 0, 0); + ]])], + AC_MSG_RESULT([yes]), + [AC_MSG_RESULT([no]) + saved_LIBS="$LIBS" + LIBS="$LIBS -lresolv" + AC_MSG_CHECKING([for res_query in -lresolv]) + AC_LINK_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <netinet/in.h> +#include <arpa/nameser.h> +#include <netdb.h> +#include <resolv.h> + ]], [[ + res_query (0, 0, 0, 0, 0); + ]])], + [AC_MSG_RESULT([yes])], + [LIBS="$saved_LIBS" + AC_MSG_RESULT([no])]) + ]) + AC_CHECK_FUNCS([_getshort _getlong]) + AC_CHECK_DECLS([_getshort, _getlong], , , + [#include <sys/types.h> + #include <arpa/nameser.h>]) + AC_CHECK_MEMBER([HEADER.ad], + [AC_DEFINE([HAVE_HEADER_AD], [1], + [Define if HEADER.ad exists in arpa/nameser.h])], , + [#include <arpa/nameser.h>]) + ]) + +AC_MSG_CHECKING([if struct __res_state _res is an extern]) +AC_LINK_IFELSE([AC_LANG_PROGRAM([[ +#include <stdio.h> +#if HAVE_SYS_TYPES_H +# include <sys/types.h> +#endif +#include <netinet/in.h> +#include <arpa/nameser.h> +#include <resolv.h> +extern struct __res_state _res; + ]], [[ +struct __res_state *volatile p = &_res; /* force resolution of _res */ +return 0; + ]],)], + [AC_MSG_RESULT([yes]) + AC_DEFINE([HAVE__RES_EXTERN], [1], + [Define if you have struct __res_state _res as an extern]) + ], + [ AC_MSG_RESULT([no]) ] +) + +# Check whether user wants SELinux support +SELINUX_MSG="no" +LIBSELINUX="" +AC_ARG_WITH([selinux], + [ --with-selinux Enable SELinux support], + [ if test "x$withval" != "xno" ; then + save_LIBS="$LIBS" + AC_DEFINE([WITH_SELINUX], [1], + [Define if you want SELinux support.]) + SELINUX_MSG="yes" + AC_CHECK_HEADER([selinux/selinux.h], , + AC_MSG_ERROR([SELinux support requires selinux.h header])) + AC_CHECK_LIB([selinux], [setexeccon], + [ LIBSELINUX="-lselinux" + LIBS="$LIBS -lselinux" + ], + AC_MSG_ERROR([SELinux support requires libselinux library])) + AC_CHECK_FUNCS([getseuserbyname get_default_context_with_level]) + LIBS="$save_LIBS $LIBSELINUX" + fi ] +) +AC_SUBST([SSHDLIBS]) + +# Check whether user wants Kerberos 5 support +KRB5_MSG="no" +AC_ARG_WITH([kerberos5], + [ --with-kerberos5=PATH Enable Kerberos 5 support], + [ if test "x$withval" != "xno" ; then + if test "x$withval" = "xyes" ; then + KRB5ROOT="/usr/local" + else + KRB5ROOT=${withval} + fi + + AC_DEFINE([KRB5], [1], [Define if you want Kerberos 5 support]) + KRB5_MSG="yes" + + use_pkgconfig_for_krb5= + if test "x$PKGCONFIG" != "xno"; then + AC_MSG_CHECKING([if $PKGCONFIG knows about kerberos5]) + if "$PKGCONFIG" krb5; then + AC_MSG_RESULT([yes]) + use_pkgconfig_for_krb5=yes + else + AC_MSG_RESULT([no]) + fi + fi + if test "x$use_pkgconfig_for_krb5" = "xyes"; then + K5CFLAGS=`$PKGCONFIG --cflags krb5` + K5LIBS=`$PKGCONFIG --libs krb5` + CPPFLAGS="$CPPFLAGS $K5CFLAGS" + + AC_MSG_CHECKING([for gssapi support]) + if "$PKGCONFIG" krb5-gssapi; then + AC_MSG_RESULT([yes]) + AC_DEFINE([GSSAPI], [1], + [Define this if you want GSSAPI + support in the version 2 protocol]) + GSSCFLAGS="`$PKGCONFIG --cflags krb5-gssapi`" + GSSLIBS="`$PKGCONFIG --libs krb5-gssapi`" + CPPFLAGS="$CPPFLAGS $GSSCFLAGS" + else + AC_MSG_RESULT([no]) + fi + AC_MSG_CHECKING([whether we are using Heimdal]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <krb5.h> + ]], [[ char *tmp = heimdal_version; ]])], + [ AC_MSG_RESULT([yes]) + AC_DEFINE([HEIMDAL], [1], + [Define this if you are using the Heimdal + version of Kerberos V5]) ], + [AC_MSG_RESULT([no]) + ]) + else + AC_PATH_TOOL([KRB5CONF], [krb5-config], + [$KRB5ROOT/bin/krb5-config], + [$KRB5ROOT/bin:$PATH]) + if test -x $KRB5CONF ; then + K5CFLAGS="`$KRB5CONF --cflags`" + K5LIBS="`$KRB5CONF --libs`" + CPPFLAGS="$CPPFLAGS $K5CFLAGS" + + AC_MSG_CHECKING([for gssapi support]) + if $KRB5CONF | grep gssapi >/dev/null ; then + AC_MSG_RESULT([yes]) + AC_DEFINE([GSSAPI], [1], + [Define this if you want GSSAPI + support in the version 2 protocol]) + GSSCFLAGS="`$KRB5CONF --cflags gssapi`" + GSSLIBS="`$KRB5CONF --libs gssapi`" + CPPFLAGS="$CPPFLAGS $GSSCFLAGS" + else + AC_MSG_RESULT([no]) + fi + AC_MSG_CHECKING([whether we are using Heimdal]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <krb5.h> + ]], [[ char *tmp = heimdal_version; ]])], + [ AC_MSG_RESULT([yes]) + AC_DEFINE([HEIMDAL], [1], + [Define this if you are using the Heimdal + version of Kerberos V5]) ], + [AC_MSG_RESULT([no]) + ]) + else + CPPFLAGS="$CPPFLAGS -I${KRB5ROOT}/include" + LDFLAGS="$LDFLAGS -L${KRB5ROOT}/lib" + AC_MSG_CHECKING([whether we are using Heimdal]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <krb5.h> + ]], [[ char *tmp = heimdal_version; ]])], + [ AC_MSG_RESULT([yes]) + AC_DEFINE([HEIMDAL]) + K5LIBS="-lkrb5" + K5LIBS="$K5LIBS -lcom_err -lasn1" + AC_CHECK_LIB([roken], [net_write], + [K5LIBS="$K5LIBS -lroken"]) + AC_CHECK_LIB([des], [des_cbc_encrypt], + [K5LIBS="$K5LIBS -ldes"]) + ], [ AC_MSG_RESULT([no]) + K5LIBS="-lkrb5 -lk5crypto -lcom_err" + ]) + AC_SEARCH_LIBS([dn_expand], [resolv]) + + AC_CHECK_LIB([gssapi_krb5], [gss_init_sec_context], + [ AC_DEFINE([GSSAPI]) + GSSLIBS="-lgssapi_krb5" ], + [ AC_CHECK_LIB([gssapi], [gss_init_sec_context], + [ AC_DEFINE([GSSAPI]) + GSSLIBS="-lgssapi" ], + [ AC_CHECK_LIB([gss], [gss_init_sec_context], + [ AC_DEFINE([GSSAPI]) + GSSLIBS="-lgss" ], + AC_MSG_WARN([Cannot find any suitable gss-api library - build may fail])) + ]) + ]) + + AC_CHECK_HEADER([gssapi.h], , + [ unset ac_cv_header_gssapi_h + CPPFLAGS="$CPPFLAGS -I${KRB5ROOT}/include/gssapi" + AC_CHECK_HEADERS([gssapi.h], , + AC_MSG_WARN([Cannot find any suitable gss-api header - build may fail]) + ) + ] + ) + + oldCPP="$CPPFLAGS" + CPPFLAGS="$CPPFLAGS -I${KRB5ROOT}/include/gssapi" + AC_CHECK_HEADER([gssapi_krb5.h], , + [ CPPFLAGS="$oldCPP" ]) + + fi + fi + if test -n "${rpath_opt}" ; then + LDFLAGS="$LDFLAGS ${rpath_opt}${KRB5ROOT}/lib" + fi + if test ! -z "$blibpath" ; then + blibpath="$blibpath:${KRB5ROOT}/lib" + fi + + AC_CHECK_HEADERS([gssapi.h gssapi/gssapi.h]) + AC_CHECK_HEADERS([gssapi_krb5.h gssapi/gssapi_krb5.h]) + AC_CHECK_HEADERS([gssapi_generic.h gssapi/gssapi_generic.h]) + + AC_SEARCH_LIBS([k_hasafs], [kafs], [AC_DEFINE([USE_AFS], [1], + [Define this if you want to use libkafs' AFS support])]) + + AC_CHECK_DECLS([GSS_C_NT_HOSTBASED_SERVICE], [], [], [[ +#ifdef HAVE_GSSAPI_H +# include <gssapi.h> +#elif defined(HAVE_GSSAPI_GSSAPI_H) +# include <gssapi/gssapi.h> +#endif + +#ifdef HAVE_GSSAPI_GENERIC_H +# include <gssapi_generic.h> +#elif defined(HAVE_GSSAPI_GSSAPI_GENERIC_H) +# include <gssapi/gssapi_generic.h> +#endif + ]]) + saved_LIBS="$LIBS" + LIBS="$LIBS $K5LIBS" + AC_CHECK_FUNCS([krb5_cc_new_unique krb5_get_error_message krb5_free_error_message]) + LIBS="$saved_LIBS" + + fi + ] +) +AC_SUBST([GSSLIBS]) +AC_SUBST([K5LIBS]) +AC_SUBST([CHANNELLIBS]) + +# Looking for programs, paths and files + +PRIVSEP_PATH=/var/empty +AC_ARG_WITH([privsep-path], + [ --with-privsep-path=xxx Path for privilege separation chroot (default=/var/empty)], + [ + if test -n "$withval" && test "x$withval" != "xno" && \ + test "x${withval}" != "xyes"; then + PRIVSEP_PATH=$withval + fi + ] +) +AC_SUBST([PRIVSEP_PATH]) + +AC_ARG_WITH([xauth], + [ --with-xauth=PATH Specify path to xauth program ], + [ + if test -n "$withval" && test "x$withval" != "xno" && \ + test "x${withval}" != "xyes"; then + xauth_path=$withval + fi + ], + [ + TestPath="$PATH" + TestPath="${TestPath}${PATH_SEPARATOR}/usr/X/bin" + TestPath="${TestPath}${PATH_SEPARATOR}/usr/bin/X11" + TestPath="${TestPath}${PATH_SEPARATOR}/usr/X11R6/bin" + TestPath="${TestPath}${PATH_SEPARATOR}/usr/openwin/bin" + AC_PATH_PROG([xauth_path], [xauth], , [$TestPath]) + if (test ! -z "$xauth_path" && test -x "/usr/openwin/bin/xauth") ; then + xauth_path="/usr/openwin/bin/xauth" + fi + ] +) + +STRIP_OPT=-s +AC_ARG_ENABLE([strip], + [ --disable-strip Disable calling strip(1) on install], + [ + if test "x$enableval" = "xno" ; then + STRIP_OPT= + fi + ] +) +AC_SUBST([STRIP_OPT]) + +if test -z "$xauth_path" ; then + XAUTH_PATH="undefined" + AC_SUBST([XAUTH_PATH]) +else + AC_DEFINE_UNQUOTED([XAUTH_PATH], ["$xauth_path"], + [Define if xauth is found in your path]) + XAUTH_PATH=$xauth_path + AC_SUBST([XAUTH_PATH]) +fi + +dnl # --with-maildir=/path/to/mail gets top priority. +dnl # if maildir is set in the platform case statement above we use that. +dnl # Otherwise we run a program to get the dir from system headers. +dnl # We first look for _PATH_MAILDIR then MAILDIR then _PATH_MAIL +dnl # If we find _PATH_MAILDIR we do nothing because that is what +dnl # session.c expects anyway. Otherwise we set to the value found +dnl # stripping any trailing slash. If for some strage reason our program +dnl # does not find what it needs, we default to /var/spool/mail. +# Check for mail directory +AC_ARG_WITH([maildir], + [ --with-maildir=/path/to/mail Specify your system mail directory], + [ + if test "X$withval" != X && test "x$withval" != xno && \ + test "x${withval}" != xyes; then + AC_DEFINE_UNQUOTED([MAIL_DIRECTORY], ["$withval"], + [Set this to your mail directory if you do not have _PATH_MAILDIR]) + fi + ],[ + if test "X$maildir" != "X"; then + AC_DEFINE_UNQUOTED([MAIL_DIRECTORY], ["$maildir"]) + else + AC_MSG_CHECKING([Discovering system mail directory]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#ifdef HAVE_PATHS_H +#include <paths.h> +#endif +#ifdef HAVE_MAILLOCK_H +#include <maillock.h> +#endif +#define DATA "conftest.maildir" + ]], [[ + FILE *fd; + int rc; + + fd = fopen(DATA,"w"); + if(fd == NULL) + exit(1); + +#if defined (_PATH_MAILDIR) + if ((rc = fprintf(fd ,"_PATH_MAILDIR:%s\n", _PATH_MAILDIR)) <0) + exit(1); +#elif defined (MAILDIR) + if ((rc = fprintf(fd ,"MAILDIR:%s\n", MAILDIR)) <0) + exit(1); +#elif defined (_PATH_MAIL) + if ((rc = fprintf(fd ,"_PATH_MAIL:%s\n", _PATH_MAIL)) <0) + exit(1); +#else + exit (2); +#endif + + exit(0); + ]])], + [ + maildir_what=`awk -F: '{print $1}' conftest.maildir` + maildir=`awk -F: '{print $2}' conftest.maildir \ + | sed 's|/$||'` + AC_MSG_RESULT([Using: $maildir from $maildir_what]) + if test "x$maildir_what" != "x_PATH_MAILDIR"; then + AC_DEFINE_UNQUOTED([MAIL_DIRECTORY], ["$maildir"]) + fi + ], + [ + if test "X$ac_status" = "X2";then +# our test program didn't find it. Default to /var/spool/mail + AC_MSG_RESULT([Using: default value of /var/spool/mail]) + AC_DEFINE_UNQUOTED([MAIL_DIRECTORY], ["/var/spool/mail"]) + else + AC_MSG_RESULT([*** not found ***]) + fi + ], + [ + AC_MSG_WARN([cross compiling: use --with-maildir=/path/to/mail]) + ] + ) + fi + ] +) # maildir + +if test ! -z "$cross_compiling" && test "x$cross_compiling" = "xyes"; then + AC_MSG_WARN([cross compiling: Disabling /dev/ptmx test]) + disable_ptmx_check=yes +fi +if test -z "$no_dev_ptmx" ; then + if test "x$disable_ptmx_check" != "xyes" ; then + AC_CHECK_FILE(["/dev/ptmx"], + [ + AC_DEFINE_UNQUOTED([HAVE_DEV_PTMX], [1], + [Define if you have /dev/ptmx]) + have_dev_ptmx=1 + ] + ) + fi +fi + +if test ! -z "$cross_compiling" && test "x$cross_compiling" != "xyes"; then + AC_CHECK_FILE(["/dev/ptc"], + [ + AC_DEFINE_UNQUOTED([HAVE_DEV_PTS_AND_PTC], [1], + [Define if you have /dev/ptc]) + have_dev_ptc=1 + ] + ) +else + AC_MSG_WARN([cross compiling: Disabling /dev/ptc test]) +fi + +# Options from here on. Some of these are preset by platform above +AC_ARG_WITH([mantype], + [ --with-mantype=man|cat|doc Set man page type], + [ + case "$withval" in + man|cat|doc) + MANTYPE=$withval + ;; + *) + AC_MSG_ERROR([invalid man type: $withval]) + ;; + esac + ] +) +if test -z "$MANTYPE"; then + if ${MANDOC} ${srcdir}/ssh.1 >/dev/null 2>&1; then + MANTYPE=doc + elif ${NROFF} -mdoc ${srcdir}/ssh.1 >/dev/null 2>&1; then + MANTYPE=doc + elif ${NROFF} -man ${srcdir}/ssh.1 >/dev/null 2>&1; then + MANTYPE=man + else + MANTYPE=cat + fi +fi +AC_SUBST([MANTYPE]) +if test "$MANTYPE" = "doc"; then + mansubdir=man; +else + mansubdir=$MANTYPE; +fi +AC_SUBST([mansubdir]) + +# Whether to disable shadow password support +AC_ARG_WITH([shadow], + [ --without-shadow Disable shadow password support], + [ + if test "x$withval" = "xno" ; then + AC_DEFINE([DISABLE_SHADOW]) + disable_shadow=yes + fi + ] +) + +if test -z "$disable_shadow" ; then + AC_MSG_CHECKING([if the systems has expire shadow information]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <shadow.h> +struct spwd sp; + ]], [[ sp.sp_expire = sp.sp_lstchg = sp.sp_inact = 0; ]])], + [ sp_expire_available=yes ], [ + ]) + + if test "x$sp_expire_available" = "xyes" ; then + AC_MSG_RESULT([yes]) + AC_DEFINE([HAS_SHADOW_EXPIRE], [1], + [Define if you want to use shadow password expire field]) + else + AC_MSG_RESULT([no]) + fi +fi + +# Use ip address instead of hostname in $DISPLAY +if test ! -z "$IPADDR_IN_DISPLAY" ; then + DISPLAY_HACK_MSG="yes" + AC_DEFINE([IPADDR_IN_DISPLAY], [1], + [Define if you need to use IP address + instead of hostname in $DISPLAY]) +else + DISPLAY_HACK_MSG="no" + AC_ARG_WITH([ipaddr-display], + [ --with-ipaddr-display Use ip address instead of hostname in $DISPLAY], + [ + if test "x$withval" != "xno" ; then + AC_DEFINE([IPADDR_IN_DISPLAY]) + DISPLAY_HACK_MSG="yes" + fi + ] + ) +fi + +# check for /etc/default/login and use it if present. +AC_ARG_ENABLE([etc-default-login], + [ --disable-etc-default-login Disable using PATH from /etc/default/login [no]], + [ if test "x$enableval" = "xno"; then + AC_MSG_NOTICE([/etc/default/login handling disabled]) + etc_default_login=no + else + etc_default_login=yes + fi ], + [ if test ! -z "$cross_compiling" && test "x$cross_compiling" = "xyes"; + then + AC_MSG_WARN([cross compiling: not checking /etc/default/login]) + etc_default_login=no + else + etc_default_login=yes + fi ] +) + +if test "x$etc_default_login" != "xno"; then + AC_CHECK_FILE(["/etc/default/login"], + [ external_path_file=/etc/default/login ]) + if test "x$external_path_file" = "x/etc/default/login"; then + AC_DEFINE([HAVE_ETC_DEFAULT_LOGIN], [1], + [Define if your system has /etc/default/login]) + fi +fi + +dnl BSD systems use /etc/login.conf so --with-default-path= has no effect +if test $ac_cv_func_login_getcapbool = "yes" && \ + test $ac_cv_header_login_cap_h = "yes" ; then + external_path_file=/etc/login.conf +fi + +# Whether to mess with the default path +SERVER_PATH_MSG="(default)" +AC_ARG_WITH([default-path], + [ --with-default-path= Specify default $PATH environment for server], + [ + if test "x$external_path_file" = "x/etc/login.conf" ; then + AC_MSG_WARN([ +--with-default-path=PATH has no effect on this system. +Edit /etc/login.conf instead.]) + elif test "x$withval" != "xno" ; then + if test ! -z "$external_path_file" ; then + AC_MSG_WARN([ +--with-default-path=PATH will only be used if PATH is not defined in +$external_path_file .]) + fi + user_path="$withval" + SERVER_PATH_MSG="$withval" + fi + ], + [ if test "x$external_path_file" = "x/etc/login.conf" ; then + AC_MSG_WARN([Make sure the path to scp is in /etc/login.conf]) + else + if test ! -z "$external_path_file" ; then + AC_MSG_WARN([ +If PATH is defined in $external_path_file, ensure the path to scp is included, +otherwise scp will not work.]) + fi + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[ +/* find out what STDPATH is */ +#include <stdio.h> +#include <stdlib.h> +#ifdef HAVE_PATHS_H +# include <paths.h> +#endif +#ifndef _PATH_STDPATH +# ifdef _PATH_USERPATH /* Irix */ +# define _PATH_STDPATH _PATH_USERPATH +# else +# define _PATH_STDPATH "/usr/bin:/bin:/usr/sbin:/sbin" +# endif +#endif +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#define DATA "conftest.stdpath" + ]], [[ + FILE *fd; + int rc; + + fd = fopen(DATA,"w"); + if(fd == NULL) + exit(1); + + if ((rc = fprintf(fd,"%s", _PATH_STDPATH)) < 0) + exit(1); + + exit(0); + ]])], + [ user_path=`cat conftest.stdpath` ], + [ user_path="/usr/bin:/bin:/usr/sbin:/sbin" ], + [ user_path="/usr/bin:/bin:/usr/sbin:/sbin" ] + ) +# make sure $bindir is in USER_PATH so scp will work + t_bindir="${bindir}" + while echo "${t_bindir}" | egrep '\$\{|NONE/' >/dev/null 2>&1; do + t_bindir=`eval echo ${t_bindir}` + case $t_bindir in + NONE/*) t_bindir=`echo $t_bindir | sed "s~NONE~$prefix~"` ;; + esac + case $t_bindir in + NONE/*) t_bindir=`echo $t_bindir | sed "s~NONE~$ac_default_prefix~"` ;; + esac + done + echo $user_path | grep ":$t_bindir" > /dev/null 2>&1 + if test $? -ne 0 ; then + echo $user_path | grep "^$t_bindir" > /dev/null 2>&1 + if test $? -ne 0 ; then + user_path=$user_path:$t_bindir + AC_MSG_RESULT([Adding $t_bindir to USER_PATH so scp will work]) + fi + fi + fi ] +) +if test "x$external_path_file" != "x/etc/login.conf" ; then + AC_DEFINE_UNQUOTED([USER_PATH], ["$user_path"], [Specify default $PATH]) + AC_SUBST([user_path]) +fi + +# Set superuser path separately to user path +AC_ARG_WITH([superuser-path], + [ --with-superuser-path= Specify different path for super-user], + [ + if test -n "$withval" && test "x$withval" != "xno" && \ + test "x${withval}" != "xyes"; then + AC_DEFINE_UNQUOTED([SUPERUSER_PATH], ["$withval"], + [Define if you want a different $PATH + for the superuser]) + superuser_path=$withval + fi + ] +) + + +AC_MSG_CHECKING([if we need to convert IPv4 in IPv6-mapped addresses]) +IPV4_IN6_HACK_MSG="no" +AC_ARG_WITH(4in6, + [ --with-4in6 Check for and convert IPv4 in IPv6 mapped addresses], + [ + if test "x$withval" != "xno" ; then + AC_MSG_RESULT([yes]) + AC_DEFINE([IPV4_IN_IPV6], [1], + [Detect IPv4 in IPv6 mapped addresses + and treat as IPv4]) + IPV4_IN6_HACK_MSG="yes" + else + AC_MSG_RESULT([no]) + fi + ], [ + if test "x$inet6_default_4in6" = "xyes"; then + AC_MSG_RESULT([yes (default)]) + AC_DEFINE([IPV4_IN_IPV6]) + IPV4_IN6_HACK_MSG="yes" + else + AC_MSG_RESULT([no (default)]) + fi + ] +) + +# Whether to enable BSD auth support +BSD_AUTH_MSG=no +AC_ARG_WITH([bsd-auth], + [ --with-bsd-auth Enable BSD auth support], + [ + if test "x$withval" != "xno" ; then + AC_DEFINE([BSD_AUTH], [1], + [Define if you have BSD auth support]) + BSD_AUTH_MSG=yes + fi + ] +) + +# Where to place sshd.pid +piddir=/var/run +# make sure the directory exists +if test ! -d $piddir ; then + piddir=`eval echo ${sysconfdir}` + case $piddir in + NONE/*) piddir=`echo $piddir | sed "s~NONE~$ac_default_prefix~"` ;; + esac +fi + +AC_ARG_WITH([pid-dir], + [ --with-pid-dir=PATH Specify location of sshd.pid file], + [ + if test -n "$withval" && test "x$withval" != "xno" && \ + test "x${withval}" != "xyes"; then + piddir=$withval + if test ! -d $piddir ; then + AC_MSG_WARN([** no $piddir directory on this system **]) + fi + fi + ] +) + +AC_DEFINE_UNQUOTED([_PATH_SSH_PIDDIR], ["$piddir"], + [Specify location of ssh.pid]) +AC_SUBST([piddir]) + +dnl allow user to disable some login recording features +AC_ARG_ENABLE([lastlog], + [ --disable-lastlog disable use of lastlog even if detected [no]], + [ + if test "x$enableval" = "xno" ; then + AC_DEFINE([DISABLE_LASTLOG]) + fi + ] +) +AC_ARG_ENABLE([utmp], + [ --disable-utmp disable use of utmp even if detected [no]], + [ + if test "x$enableval" = "xno" ; then + AC_DEFINE([DISABLE_UTMP]) + fi + ] +) +AC_ARG_ENABLE([utmpx], + [ --disable-utmpx disable use of utmpx even if detected [no]], + [ + if test "x$enableval" = "xno" ; then + AC_DEFINE([DISABLE_UTMPX], [1], + [Define if you don't want to use utmpx]) + fi + ] +) +AC_ARG_ENABLE([wtmp], + [ --disable-wtmp disable use of wtmp even if detected [no]], + [ + if test "x$enableval" = "xno" ; then + AC_DEFINE([DISABLE_WTMP]) + fi + ] +) +AC_ARG_ENABLE([wtmpx], + [ --disable-wtmpx disable use of wtmpx even if detected [no]], + [ + if test "x$enableval" = "xno" ; then + AC_DEFINE([DISABLE_WTMPX], [1], + [Define if you don't want to use wtmpx]) + fi + ] +) +AC_ARG_ENABLE([libutil], + [ --disable-libutil disable use of libutil (login() etc.) [no]], + [ + if test "x$enableval" = "xno" ; then + AC_DEFINE([DISABLE_LOGIN]) + fi + ] +) +AC_ARG_ENABLE([pututline], + [ --disable-pututline disable use of pututline() etc. ([uw]tmp) [no]], + [ + if test "x$enableval" = "xno" ; then + AC_DEFINE([DISABLE_PUTUTLINE], [1], + [Define if you don't want to use pututline() + etc. to write [uw]tmp]) + fi + ] +) +AC_ARG_ENABLE([pututxline], + [ --disable-pututxline disable use of pututxline() etc. ([uw]tmpx) [no]], + [ + if test "x$enableval" = "xno" ; then + AC_DEFINE([DISABLE_PUTUTXLINE], [1], + [Define if you don't want to use pututxline() + etc. to write [uw]tmpx]) + fi + ] +) +AC_ARG_WITH([lastlog], + [ --with-lastlog=FILE|DIR specify lastlog location [common locations]], + [ + if test "x$withval" = "xno" ; then + AC_DEFINE([DISABLE_LASTLOG]) + elif test -n "$withval" && test "x${withval}" != "xyes"; then + conf_lastlog_location=$withval + fi + ] +) + +dnl lastlog, [uw]tmpx? detection +dnl NOTE: set the paths in the platform section to avoid the +dnl need for command-line parameters +dnl lastlog and [uw]tmp are subject to a file search if all else fails + +dnl lastlog detection +dnl NOTE: the code itself will detect if lastlog is a directory +AC_MSG_CHECKING([if your system defines LASTLOG_FILE]) +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <utmp.h> +#ifdef HAVE_LASTLOG_H +# include <lastlog.h> +#endif +#ifdef HAVE_PATHS_H +# include <paths.h> +#endif +#ifdef HAVE_LOGIN_H +# include <login.h> +#endif + ]], [[ char *lastlog = LASTLOG_FILE; ]])], + [ AC_MSG_RESULT([yes]) ], + [ + AC_MSG_RESULT([no]) + AC_MSG_CHECKING([if your system defines _PATH_LASTLOG]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <utmp.h> +#ifdef HAVE_LASTLOG_H +# include <lastlog.h> +#endif +#ifdef HAVE_PATHS_H +# include <paths.h> +#endif + ]], [[ char *lastlog = _PATH_LASTLOG; ]])], + [ AC_MSG_RESULT([yes]) ], + [ + AC_MSG_RESULT([no]) + system_lastlog_path=no + ]) +]) + +if test -z "$conf_lastlog_location"; then + if test x"$system_lastlog_path" = x"no" ; then + for f in /var/log/lastlog /usr/adm/lastlog /var/adm/lastlog /etc/security/lastlog ; do + if (test -d "$f" || test -f "$f") ; then + conf_lastlog_location=$f + fi + done + if test -z "$conf_lastlog_location"; then + AC_MSG_WARN([** Cannot find lastlog **]) + dnl Don't define DISABLE_LASTLOG - that means we don't try wtmp/wtmpx + fi + fi +fi + +if test -n "$conf_lastlog_location"; then + AC_DEFINE_UNQUOTED([CONF_LASTLOG_FILE], ["$conf_lastlog_location"], + [Define if you want to specify the path to your lastlog file]) +fi + +dnl utmp detection +AC_MSG_CHECKING([if your system defines UTMP_FILE]) +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <utmp.h> +#ifdef HAVE_PATHS_H +# include <paths.h> +#endif + ]], [[ char *utmp = UTMP_FILE; ]])], + [ AC_MSG_RESULT([yes]) ], + [ AC_MSG_RESULT([no]) + system_utmp_path=no +]) +if test -z "$conf_utmp_location"; then + if test x"$system_utmp_path" = x"no" ; then + for f in /etc/utmp /usr/adm/utmp /var/run/utmp; do + if test -f $f ; then + conf_utmp_location=$f + fi + done + if test -z "$conf_utmp_location"; then + AC_DEFINE([DISABLE_UTMP]) + fi + fi +fi +if test -n "$conf_utmp_location"; then + AC_DEFINE_UNQUOTED([CONF_UTMP_FILE], ["$conf_utmp_location"], + [Define if you want to specify the path to your utmp file]) +fi + +dnl wtmp detection +AC_MSG_CHECKING([if your system defines WTMP_FILE]) +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <utmp.h> +#ifdef HAVE_PATHS_H +# include <paths.h> +#endif + ]], [[ char *wtmp = WTMP_FILE; ]])], + [ AC_MSG_RESULT([yes]) ], + [ AC_MSG_RESULT([no]) + system_wtmp_path=no +]) +if test -z "$conf_wtmp_location"; then + if test x"$system_wtmp_path" = x"no" ; then + for f in /usr/adm/wtmp /var/log/wtmp; do + if test -f $f ; then + conf_wtmp_location=$f + fi + done + if test -z "$conf_wtmp_location"; then + AC_DEFINE([DISABLE_WTMP]) + fi + fi +fi +if test -n "$conf_wtmp_location"; then + AC_DEFINE_UNQUOTED([CONF_WTMP_FILE], ["$conf_wtmp_location"], + [Define if you want to specify the path to your wtmp file]) +fi + +dnl wtmpx detection +AC_MSG_CHECKING([if your system defines WTMPX_FILE]) +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <utmp.h> +#ifdef HAVE_UTMPX_H +#include <utmpx.h> +#endif +#ifdef HAVE_PATHS_H +# include <paths.h> +#endif + ]], [[ char *wtmpx = WTMPX_FILE; ]])], + [ AC_MSG_RESULT([yes]) ], + [ AC_MSG_RESULT([no]) + system_wtmpx_path=no +]) +if test -z "$conf_wtmpx_location"; then + if test x"$system_wtmpx_path" = x"no" ; then + AC_DEFINE([DISABLE_WTMPX]) + fi +else + AC_DEFINE_UNQUOTED([CONF_WTMPX_FILE], ["$conf_wtmpx_location"], + [Define if you want to specify the path to your wtmpx file]) +fi + + +if test ! -z "$blibpath" ; then + LDFLAGS="$LDFLAGS $blibflags$blibpath" + AC_MSG_WARN([Please check and edit blibpath in LDFLAGS in Makefile]) +fi + +AC_CHECK_MEMBER([struct lastlog.ll_line], [], [ + if test x$SKIP_DISABLE_LASTLOG_DEFINE != "xyes" ; then + AC_DEFINE([DISABLE_LASTLOG]) + fi + ], [ +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_UTMP_H +#include <utmp.h> +#endif +#ifdef HAVE_UTMPX_H +#include <utmpx.h> +#endif +#ifdef HAVE_LASTLOG_H +#include <lastlog.h> +#endif + ]) + +AC_CHECK_MEMBER([struct utmp.ut_line], [], [ + AC_DEFINE([DISABLE_UTMP]) + AC_DEFINE([DISABLE_WTMP]) + ], [ +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_UTMP_H +#include <utmp.h> +#endif +#ifdef HAVE_UTMPX_H +#include <utmpx.h> +#endif +#ifdef HAVE_LASTLOG_H +#include <lastlog.h> +#endif + ]) + +dnl Adding -Werror to CFLAGS early prevents configure tests from running. +dnl Add now. +CFLAGS="$CFLAGS $werror_flags" + +if test "x$ac_cv_func_getaddrinfo" != "xyes" ; then + TEST_SSH_IPV6=no +else + TEST_SSH_IPV6=yes +fi +AC_CHECK_DECL([BROKEN_GETADDRINFO], [TEST_SSH_IPV6=no]) +AC_SUBST([TEST_SSH_IPV6], [$TEST_SSH_IPV6]) +AC_SUBST([TEST_SSH_UTF8], [$TEST_SSH_UTF8]) +AC_SUBST([TEST_MALLOC_OPTIONS], [$TEST_MALLOC_OPTIONS]) +AC_SUBST([UNSUPPORTED_ALGORITHMS], [$unsupported_algorithms]) +AC_SUBST([DEPEND], [$(cat $srcdir/.depend)]) + +# Binaries for interop tests. +AC_PATH_PROG([PLINK], [plink]) +AC_PATH_PROG([PUTTYGEN], [puttygen]) +AC_PATH_PROG([CONCH], [conch]) +AC_PATH_PROG([DROPBEAR], [dropbear]) +AC_PATH_PROG([DBCLIENT], [dbclient]) +AC_PATH_PROG([DROPBEARKEY], [dropbearkey]) +AC_PATH_PROG([DROPBEARCONVERT], [dropbearconvert]) + +CFLAGS="${CFLAGS} ${CFLAGS_AFTER}" +LDFLAGS="${LDFLAGS} ${LDFLAGS_AFTER}" + +# Make a copy of CFLAGS/LDFLAGS without PIE options. +LDFLAGS_NOPIE=`echo "$LDFLAGS" | sed 's/ -pie//'` +CFLAGS_NOPIE=`echo "$CFLAGS" | sed 's/ -fPIE//'` +AC_SUBST([LDFLAGS_NOPIE]) +AC_SUBST([CFLAGS_NOPIE]) + +AC_EXEEXT +AC_CONFIG_FILES([Makefile buildpkg.sh opensshd.init openssh.xml \ + openbsd-compat/Makefile openbsd-compat/regress/Makefile \ + survey.sh]) +AC_OUTPUT + +# Print summary of options + +# Someone please show me a better way :) +A=`eval echo ${prefix}` ; A=`eval echo ${A}` +B=`eval echo ${bindir}` ; B=`eval echo ${B}` +C=`eval echo ${sbindir}` ; C=`eval echo ${C}` +D=`eval echo ${sysconfdir}` ; D=`eval echo ${D}` +E=`eval echo ${libexecdir}/ssh-askpass` ; E=`eval echo ${E}` +F=`eval echo ${mandir}/${mansubdir}X` ; F=`eval echo ${F}` +G=`eval echo ${piddir}` ; G=`eval echo ${G}` +H=`eval echo ${PRIVSEP_PATH}` ; H=`eval echo ${H}` +I=`eval echo ${user_path}` ; I=`eval echo ${I}` +J=`eval echo ${superuser_path}` ; J=`eval echo ${J}` + +echo "" +echo "OpenSSH has been configured with the following options:" +echo " User binaries: $B" +echo " System binaries: $C" +echo " Configuration files: $D" +echo " Askpass program: $E" +echo " Manual pages: $F" +echo " PID file: $G" +echo " Privilege separation chroot path: $H" +if test "x$external_path_file" = "x/etc/login.conf" ; then +echo " At runtime, sshd will use the path defined in $external_path_file" +echo " Make sure the path to scp is present, otherwise scp will not work" +else +echo " sshd default user PATH: $I" + if test ! -z "$external_path_file"; then +echo " (If PATH is set in $external_path_file it will be used instead. If" +echo " used, ensure the path to scp is present, otherwise scp will not work.)" + fi +fi +if test ! -z "$superuser_path" ; then +echo " sshd superuser user PATH: $J" +fi +echo " Manpage format: $MANTYPE" +echo " PAM support: $PAM_MSG" +echo " OSF SIA support: $SIA_MSG" +echo " KerberosV support: $KRB5_MSG" +echo " SELinux support: $SELINUX_MSG" +echo " libedit support: $LIBEDIT_MSG" +echo " libldns support: $LDNS_MSG" +echo " Solaris process contract support: $SPC_MSG" +echo " Solaris project support: $SP_MSG" +echo " Solaris privilege support: $SPP_MSG" +echo " IP address in \$DISPLAY hack: $DISPLAY_HACK_MSG" +echo " Translate v4 in v6 hack: $IPV4_IN6_HACK_MSG" +echo " BSD Auth support: $BSD_AUTH_MSG" +echo " Random number source: $RAND_MSG" +echo " Privsep sandbox style: $SANDBOX_STYLE" +echo " PKCS#11 support: $enable_pkcs11" +echo " U2F/FIDO support: $enable_sk" + +echo "" + +echo " Host: ${host}" +echo " Compiler: ${CC}" +echo " Compiler flags: ${CFLAGS}" +echo "Preprocessor flags: ${CPPFLAGS}" +echo " Linker flags: ${LDFLAGS}" +echo " Libraries: ${LIBS}" +if test ! -z "${CHANNELLIBS}"; then +echo " +for channels: ${CHANNELLIBS}" +fi +if test ! -z "${LIBFIDO2}"; then +echo " +for FIDO2: ${LIBFIDO2}" +fi +if test ! -z "${SSHDLIBS}"; then +echo " +for sshd: ${SSHDLIBS}" +fi + +echo "" + +if test "x$MAKE_PACKAGE_SUPPORTED" = "xyes" ; then + echo "SVR4 style packages are supported with \"make package\"" + echo "" +fi + +if test "x$PAM_MSG" = "xyes" ; then + echo "PAM is enabled. You may need to install a PAM control file " + echo "for sshd, otherwise password authentication may fail. " + echo "Example PAM control files can be found in the contrib/ " + echo "subdirectory" + echo "" +fi + +if test ! -z "$NO_PEERCHECK" ; then + echo "WARNING: the operating system that you are using does not" + echo "appear to support getpeereid(), getpeerucred() or the" + echo "SO_PEERCRED getsockopt() option. These facilities are used to" + echo "enforce security checks to prevent unauthorised connections to" + echo "ssh-agent. Their absence increases the risk that a malicious" + echo "user can connect to your agent." + echo "" +fi + +if test "$AUDIT_MODULE" = "bsm" ; then + echo "WARNING: BSM audit support is currently considered EXPERIMENTAL." + echo "See the Solaris section in README.platform for details." +fi |