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+/* Various utility functions.
+ Copyright (C) 1996-2011, 2015, 2018-2020 Free Software Foundation,
+ Inc.
+
+This file is part of GNU Wget.
+
+GNU Wget is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+GNU Wget is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
+
+#include "sha256.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#ifdef HAVE_PROCESS_H
+# include <process.h> /* getpid() */
+#endif
+#include <errno.h>
+#include <fcntl.h>
+#include <assert.h>
+#include <stdarg.h>
+#include <locale.h>
+#include <errno.h>
+
+#if HAVE_UTIME
+# include <sys/types.h>
+# include <utime.h>
+# ifdef HAVE_SYS_UTIME_H
+# include <sys/utime.h>
+# endif
+#endif
+
+#include <sys/time.h>
+
+#include <sys/stat.h>
+
+/* For TIOCGWINSZ and friends: */
+#ifndef WINDOWS
+# include <sys/ioctl.h>
+# include <termios.h>
+#endif
+
+/* Needed for Unix version of run_with_timeout. */
+#include <signal.h>
+#include <setjmp.h>
+
+#include <regex.h>
+#ifdef HAVE_LIBPCRE2
+# define PCRE2_CODE_UNIT_WIDTH 8
+# include <pcre2.h>
+#elif defined HAVE_LIBPCRE
+# include <pcre.h>
+#endif
+
+#ifndef HAVE_SIGSETJMP
+/* If sigsetjmp is a macro, configure won't pick it up. */
+# ifdef sigsetjmp
+# define HAVE_SIGSETJMP
+# endif
+#endif
+
+#if defined HAVE_SIGSETJMP || defined HAVE_SIGBLOCK
+# define USE_SIGNAL_TIMEOUT
+#endif
+
+/* Some systems (Linux libc5, "NCR MP-RAS 3.0", and others) don't
+ provide MAP_FAILED, a symbolic constant for the value returned by
+ mmap() when it doesn't work. Usually, this constant should be -1.
+ This only makes sense for files that use mmap() and include
+ sys/mman.h *before* sysdep.h, but doesn't hurt others. */
+#ifdef HAVE_MMAP
+# include <sys/mman.h>
+# ifndef MAP_FAILED
+# define MAP_FAILED ((void *) -1)
+# endif
+#endif
+
+#include "utils.h"
+#include "hash.h"
+
+#ifdef __VMS
+#include "vms.h"
+#endif /* def __VMS */
+
+#ifdef TESTING
+#include "../tests/unit-tests.h"
+#endif
+
+#include "exits.h"
+#include "c-strcase.h"
+
+_Noreturn static void
+memfatal (const char *context, long attempted_size)
+{
+ /* Make sure we don't try to store part of the log line, and thus
+ call malloc. */
+ log_set_save_context (false);
+
+ /* We have different log outputs in different situations:
+ 1) output without bytes information
+ 2) output with bytes information */
+ if (attempted_size == UNKNOWN_ATTEMPTED_SIZE)
+ {
+ logprintf (LOG_ALWAYS,
+ _("%s: %s: Failed to allocate enough memory; memory exhausted.\n"),
+ exec_name, context);
+ }
+ else
+ {
+ logprintf (LOG_ALWAYS,
+ _("%s: %s: Failed to allocate %ld bytes; memory exhausted.\n"),
+ exec_name, context, attempted_size);
+ }
+
+ exit (WGET_EXIT_GENERIC_ERROR);
+}
+
+/* Character property table for (re-)escaping VMS ODS5 extended file
+ names. Note that this table ignores Unicode.
+
+ ODS2 valid characters: 0-9 A-Z a-z $ - _ ~
+
+ ODS5 Invalid characters:
+ C0 control codes (0x00 to 0x1F inclusive)
+ Asterisk (*)
+ Question mark (?)
+
+ ODS5 Invalid characters only in VMS V7.2 (which no one runs, right?):
+ Double quotation marks (")
+ Backslash (\)
+ Colon (:)
+ Left angle bracket (<)
+ Right angle bracket (>)
+ Slash (/)
+ Vertical bar (|)
+
+ Characters escaped by "^":
+ SP ! " # % & ' ( ) + , . : ; =
+ @ [ \ ] ^ ` { | } ~
+
+ Either "^_" or "^ " is accepted as a space. Period (.) is a special
+ case. Note that un-escaped < and > can also confuse a directory
+ spec.
+
+ Characters put out as ^xx:
+ 7F (DEL)
+ 80-9F (C1 control characters)
+ A0 (nonbreaking space)
+ FF (Latin small letter y diaeresis)
+
+ Other cases:
+ Unicode: "^Uxxxx", where "xxxx" is four hex digits.
+
+ Property table values:
+ Normal escape: 1
+ Space: 2
+ Dot: 4
+ Hex-hex escape: 8
+ ODS2 normal: 16
+ ODS2 lower case: 32
+ Hex digit: 64
+*/
+
+unsigned char char_prop[ 256] = {
+
+/* NUL SOH STX ETX EOT ENQ ACK BEL BS HT LF VT FF CR SO SI */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+
+/* DLE DC1 DC2 DC3 DC4 NAK SYN ETB CAN EM SUB ESC FS GS RS US */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+
+/* SP ! " # $ % & ' ( ) * + , - . / */
+ 2, 1, 1, 1, 16, 1, 1, 1, 1, 1, 0, 1, 1, 16, 4, 0,
+
+/* 0 1 2 3 4 5 6 7 8 9 : ; < = > ? */
+ 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 1, 1, 1, 1, 1, 1,
+
+/* @ A B C D E F G H I J K L M N O */
+ 1, 80, 80, 80, 80, 80, 80, 16, 16, 16, 16, 16, 16, 16, 16, 16,
+
+/* P Q R S T U V W X Y Z [ \ ] ^ _ */
+ 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 16,
+
+/* ` a b c d e f g h i j k l m n o */
+ 1, 96, 96, 96, 96, 96, 96, 32, 32, 32, 32, 32, 32, 32, 32, 32,
+
+/* p q r s t u v w x y z { | } ~ DEL */
+ 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 17, 8,
+
+ 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+ 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+ 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8
+};
+
+/* Utility function: like xstrdup(), but also lowercases S. */
+
+char *
+xstrdup_lower (const char *s)
+{
+ char *copy = xstrdup (s);
+ char *p = copy;
+ for (; *p; p++)
+ *p = c_tolower (*p);
+ return copy;
+}
+
+/* Copy the string formed by two pointers (one on the beginning, other
+ on the char after the last char) to a new, malloc-ed location.
+ 0-terminate it.
+ If both pointers are NULL, the function returns an empty string. */
+char *
+strdupdelim (const char *beg, const char *end)
+{
+ if (beg && beg <= end)
+ {
+ char *res = xmalloc (end - beg + 1);
+ memcpy (res, beg, end - beg);
+ res[end - beg] = '\0';
+ return res;
+ }
+
+ return xstrdup("");
+}
+
+/* Parse a string containing comma-separated elements, and return a
+ vector of char pointers with the elements. Spaces following the
+ commas are ignored. */
+char **
+sepstring (const char *s)
+{
+ char **res;
+ const char *p;
+ int i = 0;
+
+ if (!s || !*s)
+ return NULL;
+ res = NULL;
+ p = s;
+ while (*s)
+ {
+ if (*s == ',')
+ {
+ res = xrealloc (res, (i + 2) * sizeof (char *));
+ res[i] = strdupdelim (p, s);
+ res[++i] = NULL;
+ ++s;
+ /* Skip the blanks following the ','. */
+ while (c_isspace (*s))
+ ++s;
+ p = s;
+ }
+ else
+ ++s;
+ }
+ res = xrealloc (res, (i + 2) * sizeof (char *));
+ res[i] = strdupdelim (p, s);
+ res[i + 1] = NULL;
+ return res;
+}
+
+/* Like sprintf, but prints into a string of sufficient size freshly
+ allocated with malloc, which is returned. If unable to print due
+ to invalid format, returns NULL. Inability to allocate needed
+ memory results in abort, as with xmalloc. This is in spirit
+ similar to the GNU/BSD extension asprintf, but somewhat easier to
+ use.
+
+ Internally the function either calls vasprintf or loops around
+ vsnprintf until the correct size is found. Since Wget also ships a
+ fallback implementation of vsnprintf, this should be portable. */
+
+char *
+aprintf (const char *fmt, ...)
+{
+#if defined HAVE_VASPRINTF && !defined DEBUG_MALLOC
+ /* Use vasprintf. */
+ int ret;
+ va_list args;
+ char *str;
+ va_start (args, fmt);
+ ret = vasprintf (&str, fmt, args);
+ va_end (args);
+ if (ret < 0 && errno == ENOMEM)
+ memfatal ("aprintf", UNKNOWN_ATTEMPTED_SIZE); /* for consistency
+ with xmalloc/xrealloc */
+ else if (ret < 0)
+ return NULL;
+ return str;
+#else /* not HAVE_VASPRINTF */
+
+/* Constant is using for limits memory allocation for text buffer.
+ Applicable in situation when: vasprintf is not available in the system
+ and vsnprintf return -1 when long line is truncated (in old versions of
+ glibc and in other system where C99 doesn`t support) */
+
+#define FMT_MAX_LENGTH 1048576
+
+ /* vasprintf is unavailable. snprintf into a small buffer and
+ resize it as necessary. */
+ int size = 32;
+ char *str = xmalloc (size);
+
+ /* #### This code will infloop and eventually abort in xrealloc if
+ passed a FMT that causes snprintf to consistently return -1. */
+
+ while (1)
+ {
+ int n;
+ va_list args;
+
+ va_start (args, fmt);
+ n = vsnprintf (str, size, fmt, args);
+ va_end (args);
+
+ /* If the printing worked, return the string. */
+ if (n > -1 && n < size)
+ return str;
+
+ /* Else try again with a larger buffer. */
+ if (n > -1) /* C99 */
+ size = n + 1; /* precisely what is needed */
+ else if (size >= FMT_MAX_LENGTH) /* We have a huge buffer, */
+ { /* maybe we have some wrong
+ format string? */
+ logprintf (LOG_ALWAYS,
+ _("%s: aprintf: text buffer is too big (%d bytes), "
+ "aborting.\n"),
+ exec_name, size); /* printout a log message */
+ abort (); /* and abort... */
+ }
+ else
+ {
+ /* else, we continue to grow our
+ * buffer: Twice the old size. */
+ size <<= 1;
+ }
+ str = xrealloc (str, size);
+ }
+#endif /* not HAVE_VASPRINTF */
+}
+
+#ifndef HAVE_STRLCPY
+/* strlcpy() is a BSD function that sometimes is really handy.
+ * It is the same as snprintf(dst,dstsize,"%s",src), but much faster. */
+
+size_t
+strlcpy (char *dst, const char *src, size_t size)
+{
+ const char *old = src;
+
+ /* Copy as many bytes as will fit */
+ if (size)
+ {
+ while (--size)
+ {
+ if (!(*dst++ = *src++))
+ return src - old - 1;
+ }
+
+ *dst = 0;
+ }
+
+ while (*src++);
+ return src - old - 1;
+}
+#endif
+
+/* Concatenate the NULL-terminated list of string arguments into
+ freshly allocated space. */
+
+char *
+concat_strings (const char *str0, ...)
+{
+ va_list args;
+ const char *arg;
+ size_t length = 0, pos = 0;
+ char *s;
+
+ if (!str0)
+ return NULL;
+
+ /* calculate the length of the resulting string */
+ va_start (args, str0);
+ for (arg = str0; arg; arg = va_arg (args, const char *))
+ length += strlen(arg);
+ va_end (args);
+
+ s = xmalloc (length + 1);
+
+ /* concatenate strings */
+ va_start (args, str0);
+ for (arg = str0; arg; arg = va_arg (args, const char *))
+ pos += strlcpy(s + pos, arg, length - pos + 1);
+ va_end (args);
+
+ return s;
+}
+
+/* Format the provided time according to the specified format. The
+ format is a string with format elements supported by strftime. */
+
+static char *
+fmttime (time_t t, const char *fmt)
+{
+ static char output[32];
+ struct tm *tm = localtime(&t);
+ if (!tm)
+ abort ();
+ if (!strftime(output, sizeof(output), fmt, tm))
+ abort ();
+ return output;
+}
+
+/* Return pointer to a static char[] buffer in which zero-terminated
+ string-representation of TM (in form hh:mm:ss) is printed.
+
+ If TM is NULL, the current time will be used. */
+
+char *
+time_str (time_t t)
+{
+ return fmttime(t, "%H:%M:%S");
+}
+
+/* Like the above, but include the date: YYYY-MM-DD hh:mm:ss. */
+
+char *
+datetime_str (time_t t)
+{
+ return fmttime(t, "%Y-%m-%d %H:%M:%S");
+}
+
+/* The Windows versions of the following two functions are defined in
+ mswindows.c. On MSDOS this function should never be called. */
+
+#ifdef __VMS
+
+bool
+fork_to_background (void)
+{
+ return false;
+}
+
+#else /* def __VMS */
+
+#if !defined(WINDOWS) && !defined(MSDOS)
+bool
+fork_to_background (void)
+{
+ pid_t pid;
+ /* Whether we arrange our own version of opt.lfilename here. */
+ bool logfile_changed = false;
+
+ if (!opt.lfilename && (!opt.quiet || opt.server_response))
+ {
+ /* We must create the file immediately to avoid either a race
+ condition (which arises from using unique_name and failing to
+ use fopen_excl) or lying to the user about the log file name
+ (which arises from using unique_name, printing the name, and
+ using fopen_excl later on.) */
+ FILE *new_log_fp = unique_create (DEFAULT_LOGFILE, false, &opt.lfilename);
+ if (new_log_fp)
+ {
+ logfile_changed = true;
+ fclose (new_log_fp);
+ }
+ }
+ pid = fork ();
+ if (pid < 0)
+ {
+ /* parent, error */
+ perror ("fork");
+ exit (WGET_EXIT_GENERIC_ERROR);
+ }
+ else if (pid != 0)
+ {
+ /* parent, no error */
+ printf (_("Continuing in background, pid %d.\n"), (int) pid);
+ if (logfile_changed)
+ printf (_("Output will be written to %s.\n"), quote (opt.lfilename));
+ exit (WGET_EXIT_SUCCESS); /* #### should we use _exit()? */
+ }
+
+ /* child: give up the privileges and keep running. */
+ setsid ();
+ if (freopen ("/dev/null", "r", stdin) == NULL)
+ DEBUGP (("Failed to redirect stdin to /dev/null.\n"));
+ if (freopen ("/dev/null", "w", stdout) == NULL)
+ DEBUGP (("Failed to redirect stdout to /dev/null.\n"));
+ if (freopen ("/dev/null", "w", stderr) == NULL)
+ DEBUGP (("Failed to redirect stderr to /dev/null.\n"));
+
+ return logfile_changed;
+}
+#endif /* !WINDOWS && !MSDOS */
+
+#endif /* def __VMS [else] */
+
+
+/* "Touch" FILE, i.e. make its mtime ("modified time") equal the time
+ specified with TM. The atime ("access time") is set to the current
+ time. */
+
+void
+touch (const char *file, time_t tm)
+{
+ struct utimbuf times;
+
+ times.modtime = tm;
+ times.actime = time (NULL);
+
+ if (utime (file, &times) == -1)
+ logprintf (LOG_NOTQUIET, "utime(%s): %s\n", file, strerror (errno));
+}
+
+/* Checks if FILE is a symbolic link, and removes it if it is. Does
+ nothing under MS-Windows. */
+int
+remove_link (const char *file)
+{
+ int err = 0;
+ struct stat st;
+
+ if (lstat (file, &st) == 0 && S_ISLNK (st.st_mode))
+ {
+ DEBUGP (("Unlinking %s (symlink).\n", file));
+ err = unlink (file);
+ if (err != 0)
+ logprintf (LOG_VERBOSE, _("Failed to unlink symlink %s: %s\n"),
+ quote (file), strerror (errno));
+ }
+ return err;
+}
+
+/* Does FILENAME exist? */
+bool
+file_exists_p (const char *filename, file_stats_t *fstats)
+{
+ struct stat buf;
+
+ if (!filename)
+ return false;
+
+#if defined(WINDOWS) || defined(__VMS)
+ int ret = stat (filename, &buf);
+ if (ret >= 0)
+ {
+ if (fstats != NULL)
+ fstats->access_err = errno;
+ }
+ return ret >= 0;
+#else
+ errno = 0;
+ if (stat (filename, &buf) == 0 && S_ISREG(buf.st_mode) &&
+ (((S_IRUSR & buf.st_mode) && (getuid() == buf.st_uid)) ||
+ ((S_IRGRP & buf.st_mode) && group_member(buf.st_gid)) ||
+ (S_IROTH & buf.st_mode))) {
+ if (fstats != NULL)
+ {
+ fstats->access_err = 0;
+ fstats->st_ino = buf.st_ino;
+ fstats->st_dev = buf.st_dev;
+ }
+ return true;
+ }
+ else
+ {
+ if (fstats != NULL)
+ fstats->access_err = (errno == 0 ? EACCES : errno);
+ errno = 0;
+ return false;
+ }
+ /* NOTREACHED */
+#endif
+}
+
+/* Returns 0 if PATH is a directory, 1 otherwise (any kind of file).
+ Returns 0 on error. */
+bool
+file_non_directory_p (const char *path)
+{
+ struct stat buf;
+ /* Use lstat() rather than stat() so that symbolic links pointing to
+ directories can be identified correctly. */
+ if (lstat (path, &buf) != 0)
+ return false;
+ return S_ISDIR (buf.st_mode) ? false : true;
+}
+
+/* Return the size of file named by FILENAME, or -1 if it cannot be
+ opened or sought into. */
+wgint
+file_size (const char *filename)
+{
+#if defined(HAVE_FSEEKO) && defined(HAVE_FTELLO)
+ wgint size;
+ /* We use fseek rather than stat to determine the file size because
+ that way we can also verify that the file is readable without
+ explicitly checking for permissions. Inspired by the POST patch
+ by Arnaud Wylie. */
+ FILE *fp = fopen (filename, "rb");
+ if (!fp)
+ return -1;
+ fseeko (fp, 0, SEEK_END);
+ size = ftello (fp);
+ fclose (fp);
+ return size;
+#else
+ struct stat st;
+ if (stat (filename, &st) < 0)
+ return -1;
+ return st.st_size;
+#endif
+}
+
+/* 2005-02-19 SMS.
+ If no UNIQ_SEP is defined (as on VMS), have unique_name() return the
+ original name. With the VMS file systems' versioning, everything
+ should be fine, and appending ".NN" just causes trouble.
+*/
+
+#ifdef UNIQ_SEP
+
+/* stat file names named PREFIX.1, PREFIX.2, etc., until one that
+ doesn't exist is found. Return a freshly allocated copy of the
+ unused file name. */
+
+static char *
+unique_name_1 (const char *prefix)
+{
+ int count = 1;
+ int plen = strlen (prefix);
+ char *template = xmalloc (plen + 1 + 24);
+ char *template_tail = template + plen;
+
+ memcpy (template, prefix, plen);
+ *template_tail++ = UNIQ_SEP;
+
+ do
+ number_to_string (template_tail, count++);
+ while (file_exists_p (template, NULL) && count < 999999);
+
+ return template;
+}
+
+/* Return a unique file name, based on FILE.
+
+ More precisely, if FILE doesn't exist, it is returned unmodified.
+ If not, FILE.1 is tried, then FILE.2, etc. The first FILE.<number>
+ file name that doesn't exist is returned.
+
+ 2005-02-19 SMS. "." is now UNIQ_SEP, and may be different.
+
+ The resulting file is not created, only verified that it didn't
+ exist at the point in time when the function was called.
+ Therefore, where security matters, don't rely that the file created
+ by this function exists until you open it with O_EXCL or
+ equivalent.
+
+ unique_name() always returns a freshly allocated string.
+
+ unique_name_passthrough() may return FILE if the file doesn't exist
+ (and therefore doesn't need changing). */
+
+char *
+unique_name_passthrough (const char *file)
+{
+ /* If the FILE itself doesn't exist, return it without
+ modification. Otherwise, find a numeric suffix that results in unused
+ file name and return it. */
+ return file_exists_p (file, NULL) ? unique_name_1 (file) : (char *) file;
+}
+
+char *
+unique_name (const char *file)
+{
+ /* If the FILE itself doesn't exist, return it without
+ modification. Otherwise, find a numeric suffix that results in unused
+ file name and return it. */
+ return file_exists_p (file, NULL) ? unique_name_1 (file) : xstrdup (file);
+}
+
+#else /* def UNIQ_SEP */
+
+/* Dummy unique_name() for VMS. Return the original name as easily as
+ possible.
+*/
+char *
+unique_name_passthrough (const char *file, bool allow_passthrough)
+{
+ /* Return the FILE itself, without modification, irregardful. */
+ return (char *) file);
+}
+char *
+
+unique_name (const char *file)
+{
+ /* Return the FILE itself, without modification, irregardful. */
+ return xstrdup (file);
+}
+
+#endif /* def UNIQ_SEP [else] */
+
+/* Create a file based on NAME, except without overwriting an existing
+ file with that name. Providing O_EXCL is correctly implemented,
+ this function does not have the race condition associated with
+ opening the file returned by unique_name. */
+
+FILE *
+unique_create (const char *name, bool binary, char **opened_name)
+{
+ /* unique file name, based on NAME */
+ char *uname = unique_name (name);
+ FILE *fp;
+ while ((fp = fopen_excl (uname, binary)) == NULL && errno == EEXIST)
+ {
+ xfree (uname);
+ uname = unique_name (name);
+ }
+ if (opened_name)
+ {
+ if (fp)
+ *opened_name = uname;
+ else
+ {
+ *opened_name = NULL;
+ xfree (uname);
+ }
+ }
+ else
+ xfree (uname);
+ return fp;
+}
+
+/* Open the file for writing, with the addition that the file is
+ opened "exclusively". This means that, if the file already exists,
+ this function will *fail* and errno will be set to EEXIST. If
+ BINARY is set, the file will be opened in binary mode, equivalent
+ to fopen's "wb".
+
+ If opening the file fails for any reason, including the file having
+ previously existed, this function returns NULL and sets errno
+ appropriately. */
+
+FILE *
+fopen_excl (const char *fname, int binary)
+{
+ int fd;
+#ifdef O_EXCL
+
+/* 2005-04-14 SMS.
+ VMS lacks O_BINARY, but makes up for it in weird and wonderful ways.
+ It also has file versions which obviate all the O_EXCL effort.
+ O_TRUNC (something of a misnomer) requests a new version.
+*/
+# ifdef __VMS
+/* Common open() optional arguments:
+ sequential access only, access callback function.
+*/
+# define OPEN_OPT_ARGS "fop=sqo", "acc", acc_cb, &open_id
+
+ int open_id;
+ int flags = O_WRONLY | O_CREAT | O_TRUNC;
+
+ if (binary > 1)
+ {
+ open_id = 11;
+ fd = open( fname, /* File name. */
+ flags, /* Flags. */
+ 0777, /* Mode for default protection. */
+ "ctx=bin,stm", /* Binary, stream access. */
+ "rfm=stmlf", /* Stream_LF. */
+ OPEN_OPT_ARGS); /* Access callback. */
+ }
+ else if (binary)
+ {
+ open_id = 12;
+ fd = open( fname, /* File name. */
+ flags, /* Flags. */
+ 0777, /* Mode for default protection. */
+ "ctx=bin,stm", /* Binary, stream access. */
+ "rfm=fix", /* Fixed-length, */
+ "mrs=512", /* 512-byte records. */
+ OPEN_OPT_ARGS); /* Access callback. */
+ }
+ else
+ {
+ open_id = 13;
+ fd = open( fname, /* File name. */
+ flags, /* Flags. */
+ 0777, /* Mode for default protection. */
+ "rfm=stmlf", /* Stream_LF. */
+ OPEN_OPT_ARGS); /* Access callback. */
+ }
+# else /* def __VMS */
+ int flags = O_WRONLY | O_CREAT | O_EXCL;
+# ifdef O_BINARY
+ if (binary)
+ flags |= O_BINARY;
+# endif
+ fd = open (fname, flags, 0666);
+# endif /* def __VMS [else] */
+
+ if (fd < 0)
+ return NULL;
+ return fdopen (fd, binary ? "wb" : "w");
+#else /* not O_EXCL */
+ /* Manually check whether the file exists. This is prone to race
+ conditions, but systems without O_EXCL haven't deserved
+ better. */
+ if (file_exists_p (fname, NULL))
+ {
+ errno = EEXIST;
+ return NULL;
+ }
+ return fopen (fname, binary ? "wb" : "w");
+#endif /* not O_EXCL */
+}
+
+/* fopen_stat() assumes that file_exists_p() was called earlier.
+ file_stats_t passed to this function was returned from file_exists_p()
+ This is to prevent TOCTTOU race condition.
+ Details : FIO45-C from https://www.securecoding.cert.org/
+ Note that for creating a new file, this check is not useful
+
+ Input:
+ fname => Name of file to open
+ mode => File open mode
+ fstats => Saved file_stats_t about file that was checked for existence
+
+ Returns:
+ NULL if there was an error
+ FILE * of opened file stream
+*/
+FILE *
+fopen_stat(const char *fname, const char *mode, file_stats_t *fstats)
+{
+ int fd;
+ FILE *fp;
+ struct stat fdstats;
+
+#if defined FUZZING && defined TESTING
+ fp = fopen_wgetrc (fname, mode);
+ return fp;
+#else
+ fp = fopen (fname, mode);
+#endif
+ if (fp == NULL)
+ {
+ logprintf (LOG_NOTQUIET, _("Failed to Fopen file %s\n"), fname);
+ return NULL;
+ }
+ fd = fileno (fp);
+ if (fd < 0)
+ {
+ logprintf (LOG_NOTQUIET, _("Failed to get FD for file %s\n"), fname);
+ fclose (fp);
+ return NULL;
+ }
+ memset(&fdstats, 0, sizeof(fdstats));
+ if (fstat (fd, &fdstats) == -1)
+ {
+ logprintf (LOG_NOTQUIET, _("Failed to stat file %s, (check permissions)\n"), fname);
+ fclose (fp);
+ return NULL;
+ }
+#if !(defined(WINDOWS) || defined(__VMS))
+ if (fstats != NULL &&
+ (fdstats.st_dev != fstats->st_dev ||
+ fdstats.st_ino != fstats->st_ino))
+ {
+ /* File changed since file_exists_p() : NOT SAFE */
+ logprintf (LOG_NOTQUIET, _("File %s changed since the last check. Security check failed.\n"), fname);
+ fclose (fp);
+ return NULL;
+ }
+#endif
+
+ return fp;
+}
+
+/* open_stat assumes that file_exists_p() was called earlier to save file_stats
+ file_stats_t passed to this function was returned from file_exists_p()
+ This is to prevent TOCTTOU race condition.
+ Details : FIO45-C from https://www.securecoding.cert.org/
+ Note that for creating a new file, this check is not useful
+
+
+ Input:
+ fname => Name of file to open
+ flags => File open flags
+ mode => File open mode
+ fstats => Saved file_stats_t about file that was checked for existence
+
+ Returns:
+ -1 if there was an error
+ file descriptor of opened file stream
+*/
+int
+open_stat(const char *fname, int flags, mode_t mode, file_stats_t *fstats)
+{
+ int fd;
+ struct stat fdstats;
+
+ fd = open (fname, flags, mode);
+ if (fd < 0)
+ {
+ logprintf (LOG_NOTQUIET, _("Failed to open file %s, reason :%s\n"), fname, strerror(errno));
+ return -1;
+ }
+ memset(&fdstats, 0, sizeof(fdstats));
+ if (fstat (fd, &fdstats) == -1)
+ {
+ logprintf (LOG_NOTQUIET, _("Failed to stat file %s, error: %s\n"), fname, strerror(errno));
+ close (fd);
+ return -1;
+ }
+#if !(defined(WINDOWS) || defined(__VMS))
+ if (fstats != NULL &&
+ (fdstats.st_dev != fstats->st_dev ||
+ fdstats.st_ino != fstats->st_ino))
+ {
+ /* File changed since file_exists_p() : NOT SAFE */
+ logprintf (LOG_NOTQUIET, _("Trying to open file %s but it changed since last check. Security check failed.\n"), fname);
+ close (fd);
+ return -1;
+ }
+#endif
+
+ return fd;
+}
+
+/* Create DIRECTORY. If some of the pathname components of DIRECTORY
+ are missing, create them first. In case any mkdir() call fails,
+ return its error status. Returns 0 on successful completion.
+
+ The behaviour of this function should be identical to the behaviour
+ of `mkdir -p' on systems where mkdir supports the `-p' option. */
+int
+make_directory (const char *directory)
+{
+ int i, ret, quit = 0;
+ char buf[1024];
+ char *dir;
+ size_t len = strlen (directory);
+
+ /* Make a copy of dir, to be able to write to it. Otherwise, the
+ function is unsafe if called with a read-only char *argument. */
+ if (len < sizeof(buf))
+ {
+ memcpy(buf, directory, len + 1);
+ dir = buf;
+ }
+ else
+ dir = xstrdup(directory);
+
+ /* If the first character of dir is '/', skip it (and thus enable
+ creation of absolute-pathname directories. */
+ for (i = (*dir == '/'); 1; ++i)
+ {
+ for (; dir[i] && dir[i] != '/'; i++)
+ ;
+ if (!dir[i])
+ quit = 1;
+ dir[i] = '\0';
+ /* Check whether the directory already exists. Allow creation of
+ of intermediate directories to fail, as the initial path components
+ are not necessarily directories! */
+ if (!file_exists_p (dir, NULL))
+ ret = mkdir (dir, 0777);
+ else
+ ret = 0;
+ if (quit)
+ break;
+ else
+ dir[i] = '/';
+ }
+
+ if (dir != buf)
+ xfree (dir);
+
+ return ret;
+}
+
+/* Merge BASE with FILE. BASE can be a directory or a file name, FILE
+ should be a file name.
+
+ file_merge("/foo/bar", "baz") => "/foo/baz"
+ file_merge("/foo/bar/", "baz") => "/foo/bar/baz"
+ file_merge("foo", "bar") => "bar"
+
+ In other words, it's a simpler and gentler version of uri_merge. */
+
+char *
+file_merge (const char *base, const char *file)
+{
+ char *result;
+ const char *cut = (const char *)strrchr (base, '/');
+
+ if (!cut)
+ return xstrdup (file);
+
+ result = xmalloc (cut - base + 1 + strlen (file) + 1);
+ memcpy (result, base, cut - base);
+ result[cut - base] = '/';
+ strcpy (result + (cut - base) + 1, file);
+
+ return result;
+}
+
+/* Like fnmatch, but performs a case-insensitive match. */
+
+int
+fnmatch_nocase (const char *pattern, const char *string, int flags)
+{
+ /* The FNM_CASEFOLD flag started as a GNU extension, but it is now
+ also present on *BSD platforms, and possibly elsewhere.
+ Gnulib provides this flag in case it doesn't exist. */
+ return fnmatch (pattern, string, flags | FNM_CASEFOLD);
+}
+
+static bool in_acclist (const char *const *, const char *, bool);
+
+/* Determine whether a file is acceptable to be followed, according to
+ lists of patterns to accept/reject. */
+bool
+acceptable (const char *s)
+{
+ const char *p;
+
+ if (opt.output_document && strcmp (s, opt.output_document) == 0)
+ return true;
+
+ if ((p = strrchr (s, '/')))
+ s = p + 1;
+
+ if (opt.accepts)
+ {
+ if (opt.rejects)
+ return (in_acclist ((const char *const *)opt.accepts, s, true)
+ && !in_acclist ((const char *const *)opt.rejects, s, true));
+ else
+ return in_acclist ((const char *const *)opt.accepts, s, true);
+ }
+ else if (opt.rejects)
+ return !in_acclist ((const char *const *)opt.rejects, s, true);
+
+ return true;
+}
+
+/* Determine whether an URL is acceptable to be followed, according to
+ regex patterns to accept/reject. */
+bool
+accept_url (const char *s)
+{
+ if (opt.acceptregex && !opt.regex_match_fun (opt.acceptregex, s))
+ return false;
+ if (opt.rejectregex && opt.regex_match_fun (opt.rejectregex, s))
+ return false;
+
+ return true;
+}
+
+/* Check if D2 is a subdirectory of D1. E.g. if D1 is `/something', subdir_p()
+ will return true if and only if D2 begins with `/something/' or is exactly
+ '/something'. */
+bool
+subdir_p (const char *d1, const char *d2)
+{
+ if (*d1 == '\0')
+ return true;
+ if (!opt.ignore_case)
+ for (; *d1 && *d2 && (*d1 == *d2); ++d1, ++d2)
+ ;
+ else
+ for (; *d1 && *d2 && (c_tolower (*d1) == c_tolower (*d2)); ++d1, ++d2)
+ ;
+
+ return *d1 == '\0' && (*d2 == '\0' || *d2 == '/');
+}
+
+/* Iterate through DIRLIST (which must be NULL-terminated), and return the
+ first element that matches DIR, through wildcards or front comparison (as
+ appropriate). */
+static bool
+dir_matches_p (const char **dirlist, const char *dir)
+{
+ const char **x;
+ int (*matcher) (const char *, const char *, int)
+ = opt.ignore_case ? fnmatch_nocase : fnmatch;
+
+ for (x = dirlist; *x; x++)
+ {
+ /* Remove leading '/' */
+ const char *p = *x + (**x == '/');
+ if (has_wildcards_p (p))
+ {
+ if (matcher (p, dir, FNM_PATHNAME) == 0)
+ break;
+ }
+ else
+ {
+ if (subdir_p (p, dir))
+ break;
+ }
+ }
+
+ return *x ? true : false;
+}
+
+/* Returns whether DIRECTORY is acceptable for download, wrt the
+ include/exclude lists.
+
+ The leading `/' is ignored in paths; relative and absolute paths
+ may be freely intermixed. */
+
+bool
+accdir (const char *directory)
+{
+ /* Remove starting '/'. */
+ if (*directory == '/')
+ ++directory;
+ if (opt.includes)
+ {
+ if (!dir_matches_p (opt.includes, directory))
+ return false;
+ }
+ if (opt.excludes)
+ {
+ if (dir_matches_p (opt.excludes, directory))
+ return false;
+ }
+ return true;
+}
+
+/* Return true if STRING ends with TAIL. For instance:
+
+ match_tail ("abc", "bc", false) -> 1
+ match_tail ("abc", "ab", false) -> 0
+ match_tail ("abc", "abc", false) -> 1
+
+ If FOLD_CASE is true, the comparison will be case-insensitive. */
+
+bool
+match_tail (const char *string, const char *tail, bool fold_case)
+{
+ int pos = (int) strlen (string) - (int) strlen (tail);
+
+ if (pos < 0)
+ return false; /* tail is longer than string. */
+
+ if (!fold_case)
+ return !strcmp (string + pos, tail);
+ else
+ return !strcasecmp (string + pos, tail);
+}
+
+/* Checks whether string S matches each element of ACCEPTS. A list
+ element are matched either with fnmatch() or match_tail(),
+ according to whether the element contains wildcards or not.
+
+ If the BACKWARD is false, don't do backward comparison -- just compare
+ them normally. */
+static bool
+in_acclist (const char *const *accepts, const char *s, bool backward)
+{
+ for (; *accepts; accepts++)
+ {
+ if (has_wildcards_p (*accepts))
+ {
+ int res = opt.ignore_case
+ ? fnmatch_nocase (*accepts, s, 0) : fnmatch (*accepts, s, 0);
+ /* fnmatch returns 0 if the pattern *does* match the string. */
+ if (res == 0)
+ return true;
+ }
+ else
+ {
+ if (backward)
+ {
+ if (match_tail (s, *accepts, opt.ignore_case))
+ return true;
+ }
+ else
+ {
+ int cmp = opt.ignore_case
+ ? strcasecmp (s, *accepts) : strcmp (s, *accepts);
+ if (cmp == 0)
+ return true;
+ }
+ }
+ }
+ return false;
+}
+
+/* Return the location of STR's suffix (file extension). Examples:
+ suffix ("foo.bar") -> "bar"
+ suffix ("foo.bar.baz") -> "baz"
+ suffix ("/foo/bar") -> NULL
+ suffix ("/foo.bar/baz") -> NULL */
+char *
+suffix (const char *str)
+{
+ char *p;
+
+ if ((p = strrchr (str, '.')) && !strchr (p + 1, '/'))
+ return p + 1;
+
+ return NULL;
+}
+
+/* Return true if S contains globbing wildcards (`*', `?', `[' or
+ `]'). */
+
+bool
+has_wildcards_p (const char *s)
+{
+ return !!strpbrk (s, "*?[]");
+}
+
+/* Return true if FNAME ends with a typical HTML suffix. The
+ following (case-insensitive) suffixes are presumed to be HTML
+ files:
+
+ html
+ htm
+ ?html (`?' matches one character)
+
+ #### CAVEAT. This is not necessarily a good indication that FNAME
+ refers to a file that contains HTML! */
+bool
+has_html_suffix_p (const char *fname)
+{
+ char *suf;
+
+ if ((suf = suffix (fname)) == NULL)
+ return false;
+ if (!c_strcasecmp (suf, "html"))
+ return true;
+ if (!c_strcasecmp (suf, "htm"))
+ return true;
+ if (suf[0] && !c_strcasecmp (suf + 1, "html"))
+ return true;
+ return false;
+}
+
+/* Read FILE into memory. A pointer to `struct file_memory' are
+ returned; use struct element `content' to access file contents, and
+ the element `length' to know the file length. `content' is *not*
+ zero-terminated, and you should *not* read or write beyond the [0,
+ length) range of characters.
+
+ After you are done with the file contents, call wget_read_file_free to
+ release the memory.
+
+ Depending on the operating system and the type of file that is
+ being read, wget_read_file() either mmap's the file into memory, or
+ reads the file into the core using read().
+
+ If file is named "-", fileno(stdin) is used for reading instead.
+ If you want to read from a real file named "-", use "./-" instead. */
+
+struct file_memory *
+wget_read_file (const char *file)
+{
+ int fd;
+ struct file_memory *fm;
+ long size;
+ bool inhibit_close = false;
+
+ /* Some magic in the finest tradition of Perl and its kin: if FILE
+ is "-", just use stdin. */
+#ifndef FUZZING
+ if (HYPHENP (file))
+ {
+ fd = fileno (stdin);
+ inhibit_close = true;
+ /* Note that we don't inhibit mmap() in this case. If stdin is
+ redirected from a regular file, mmap() will still work. */
+ }
+ else
+#endif
+ fd = open (file, O_RDONLY);
+ if (fd < 0)
+ return NULL;
+ fm = xnew (struct file_memory);
+
+#ifdef HAVE_MMAP
+ {
+ struct stat buf;
+ if (fstat (fd, &buf) < 0)
+ goto mmap_lose;
+ fm->length = buf.st_size;
+ /* NOTE: As far as I know, the callers of this function never
+ modify the file text. Relying on this would enable us to
+ specify PROT_READ and MAP_SHARED for a marginal gain in
+ efficiency, but at some cost to generality. */
+ fm->content = mmap (NULL, fm->length, PROT_READ | PROT_WRITE,
+ MAP_PRIVATE, fd, 0);
+ if (fm->content == (char *)MAP_FAILED)
+ goto mmap_lose;
+ if (!inhibit_close)
+ close (fd);
+
+ fm->mmap_p = 1;
+ return fm;
+ }
+
+ mmap_lose:
+ /* The most common reason why mmap() fails is that FD does not point
+ to a plain file. However, it's also possible that mmap() doesn't
+ work for a particular type of file. Therefore, whenever mmap()
+ fails, we just fall back to the regular method. */
+#endif /* HAVE_MMAP */
+
+ fm->length = 0;
+ size = 512; /* number of bytes fm->contents can
+ hold at any given time. */
+ fm->content = xmalloc (size);
+ while (1)
+ {
+ wgint nread;
+ if (fm->length > size / 2)
+ {
+ /* #### I'm not sure whether the whole exponential-growth
+ thing makes sense with kernel read. On Linux at least,
+ read() refuses to read more than 4K from a file at a
+ single chunk anyway. But other Unixes might optimize it
+ better, and it doesn't *hurt* anything, so I'm leaving
+ it. */
+
+ /* Normally, we grow SIZE exponentially to make the number
+ of calls to read() and realloc() logarithmic in relation
+ to file size. However, read() can read an amount of data
+ smaller than requested, and it would be unreasonable to
+ double SIZE every time *something* was read. Therefore,
+ we double SIZE only when the length exceeds half of the
+ entire allocated size. */
+ size <<= 1;
+ fm->content = xrealloc (fm->content, size);
+ }
+ nread = read (fd, fm->content + fm->length, size - fm->length);
+ if (nread > 0)
+ /* Successful read. */
+ fm->length += nread;
+ else if (nread < 0)
+ /* Error. */
+ goto lose;
+ else
+ /* EOF */
+ break;
+ }
+ if (!inhibit_close)
+ close (fd);
+ if (size > fm->length && fm->length != 0)
+ /* Due to exponential growth of fm->content, the allocated region
+ might be much larger than what is actually needed. */
+ fm->content = xrealloc (fm->content, fm->length);
+ fm->mmap_p = 0;
+ return fm;
+
+ lose:
+ if (!inhibit_close)
+ close (fd);
+ xfree (fm->content);
+ xfree (fm);
+ return NULL;
+}
+
+/* Release the resources held by FM. Specifically, this calls
+ munmap() or xfree() on fm->content, depending whether mmap or
+ malloc/read were used to read in the file. It also frees the
+ memory needed to hold the FM structure itself. */
+
+void
+wget_read_file_free (struct file_memory *fm)
+{
+#ifdef HAVE_MMAP
+ if (fm->mmap_p)
+ {
+ munmap (fm->content, fm->length);
+ }
+ else
+#endif
+ {
+ xfree (fm->content);
+ }
+ xfree (fm);
+}
+
+/* Free the pointers in a NULL-terminated vector of pointers, then
+ free the pointer itself. */
+void
+free_vec (char **vec)
+{
+ if (vec)
+ {
+ char **p = vec;
+ while (*p)
+ {
+ xfree (*p);
+ p++;
+ }
+ xfree (vec);
+ }
+}
+
+/* Append vector V2 to vector V1. The function frees V2 and
+ reallocates V1 (thus you may not use the contents of neither
+ pointer after the call). If V1 is NULL, V2 is returned. */
+char **
+merge_vecs (char **v1, char **v2)
+{
+ int i, j;
+
+ if (!v1)
+ return v2;
+ if (!v2)
+ return v1;
+ if (!*v2)
+ {
+ /* To avoid j == 0 */
+ xfree (v2);
+ return v1;
+ }
+ /* Count v1. */
+ for (i = 0; v1[i]; i++)
+ ;
+ /* Count v2. */
+ for (j = 0; v2[j]; j++)
+ ;
+ /* Reallocate v1. */
+ v1 = xrealloc (v1, (i + j + 1) * sizeof (char *));
+ memcpy (v1 + i, v2, (j + 1) * sizeof (char *));
+ xfree (v2);
+ return v1;
+}
+
+/* Append a freshly allocated copy of STR to VEC. If VEC is NULL, it
+ is allocated as needed. Return the new value of the vector. */
+
+char **
+vec_append (char **vec, const char *str)
+{
+ int cnt; /* count of vector elements, including
+ the one we're about to append */
+ if (vec != NULL)
+ {
+ for (cnt = 0; vec[cnt]; cnt++)
+ ;
+ ++cnt;
+ }
+ else
+ cnt = 1;
+ /* Reallocate the array to fit the new element and the NULL. */
+ vec = xrealloc (vec, (cnt + 1) * sizeof (char *));
+ /* Append a copy of STR to the vector. */
+ vec[cnt - 1] = xstrdup (str);
+ vec[cnt] = NULL;
+ return vec;
+}
+
+/* Sometimes it's useful to create "sets" of strings, i.e. special
+ hash tables where you want to store strings as keys and merely
+ query for their existence. Here is a set of utility routines that
+ makes that transparent. */
+
+void
+string_set_add (struct hash_table *ht, const char *s)
+{
+ /* First check whether the set element already exists. If it does,
+ do nothing so that we don't have to free() the old element and
+ then strdup() a new one. */
+ if (hash_table_contains (ht, s))
+ return;
+
+ /* We use "1" as value. It provides us a useful and clear arbitrary
+ value, and it consumes no memory -- the pointers to the same
+ string "1" will be shared by all the key-value pairs in all `set'
+ hash tables. */
+ hash_table_put (ht, xstrdup (s), "1");
+}
+
+/* Synonym for hash_table_contains... */
+
+int
+string_set_contains (struct hash_table *ht, const char *s)
+{
+ return hash_table_contains (ht, s);
+}
+
+/* Convert the specified string set to array. ARRAY should be large
+ enough to hold hash_table_count(ht) char pointers. */
+
+void string_set_to_array (struct hash_table *ht, char **array)
+{
+ hash_table_iterator iter;
+ for (hash_table_iterate (ht, &iter); hash_table_iter_next (&iter); )
+ *array++ = iter.key;
+}
+
+/* Free the string set. This frees both the storage allocated for
+ keys and the actual hash table. (hash_table_destroy would only
+ destroy the hash table.) */
+
+void
+string_set_free (struct hash_table *ht)
+{
+ hash_table_iterator iter;
+ for (hash_table_iterate (ht, &iter); hash_table_iter_next (&iter); )
+ xfree (iter.key);
+ hash_table_destroy (ht);
+}
+
+/* Utility function: simply call xfree() on all keys and values of HT. */
+
+void
+free_keys_and_values (struct hash_table *ht)
+{
+ hash_table_iterator iter;
+ for (hash_table_iterate (ht, &iter); hash_table_iter_next (&iter); )
+ {
+ xfree (iter.key);
+ xfree (iter.value);
+ }
+}
+
+/* Get digit grouping data for thousand separors by calling
+ localeconv(). The data includes separator string and grouping info
+ and is cached after the first call to the function.
+
+ In locales that don't set a thousand separator (such as the "C"
+ locale), this forces it to be ",". We are now only showing
+ thousand separators in one place, so this shouldn't be a problem in
+ practice. */
+
+static void
+get_grouping_data (const char **sep, const char **grouping)
+{
+ static const char *cached_sep;
+ static const char *cached_grouping;
+ static bool initialized;
+ if (!initialized)
+ {
+ /* Get the grouping info from the locale. */
+ struct lconv *lconv = localeconv ();
+ cached_sep = lconv->thousands_sep;
+ cached_grouping = lconv->grouping;
+#if ! USE_NLS_PROGRESS_BAR
+ /* We can't count column widths, so ensure that the separator
+ * is single-byte only (let check below determine what byte). */
+ if (strlen(cached_sep) > 1)
+ cached_sep = "";
+#endif
+ if (!*cached_sep)
+ {
+ /* Many locales (such as "C" or "hr_HR") don't specify
+ grouping, which we still want to use it for legibility.
+ In those locales set the sep char to ',', unless that
+ character is used for decimal point, in which case set it
+ to ".". */
+ if (*lconv->decimal_point != ',')
+ cached_sep = ",";
+ else
+ cached_sep = ".";
+ cached_grouping = "\x03";
+ }
+ initialized = true;
+ }
+ *sep = cached_sep;
+ *grouping = cached_grouping;
+}
+
+/* Return a printed representation of N with thousand separators.
+ This should respect locale settings, with the exception of the "C"
+ locale which mandates no separator, but we use one anyway.
+
+ Unfortunately, we cannot use %'d (in fact it would be %'j) to get
+ the separators because it's too non-portable, and it's hard to test
+ for this feature at configure time. Besides, it wouldn't display
+ separators in the "C" locale, still used by many Unix users. */
+
+const char *
+with_thousand_seps (wgint n)
+{
+ static char outbuf[48];
+ char *p = outbuf + sizeof outbuf;
+
+ /* Info received from locale */
+ const char *grouping, *sep;
+ int seplen;
+
+ /* State information */
+ int i = 0, groupsize;
+ const char *atgroup;
+
+ bool negative = n < 0;
+
+ /* Initialize grouping data. */
+ get_grouping_data (&sep, &grouping);
+ seplen = strlen (sep);
+ atgroup = grouping;
+ groupsize = *atgroup++;
+
+ /* This would overflow on WGINT_MIN, but printing negative numbers
+ is not an important goal of this fuinction. */
+ if (negative)
+ n = -n;
+
+ /* Write the number into the buffer, backwards, inserting the
+ separators as necessary. */
+ *--p = '\0';
+ while (1)
+ {
+ *--p = n % 10 + '0';
+ n /= 10;
+ if (n == 0)
+ break;
+ /* Prepend SEP to every groupsize'd digit and get new groupsize. */
+ if (++i == groupsize)
+ {
+ if (seplen == 1)
+ *--p = *sep;
+ else
+ memcpy (p -= seplen, sep, seplen);
+ i = 0;
+ if (*atgroup)
+ groupsize = *atgroup++;
+ }
+ }
+ if (negative)
+ *--p = '-';
+
+ return p;
+}
+
+/* N, a byte quantity, is converted to a human-readable abberviated
+ form a la sizes printed by `ls -lh'. The result is written to a
+ static buffer, a pointer to which is returned.
+
+ Unlike `with_thousand_seps', this approximates to the nearest unit.
+ Quoting GNU libit: "Most people visually process strings of 3-4
+ digits effectively, but longer strings of digits are more prone to
+ misinterpretation. Hence, converting to an abbreviated form
+ usually improves readability."
+
+ This intentionally uses kilobyte (KB), megabyte (MB), etc. in their
+ original computer-related meaning of "powers of 1024". We don't
+ use the "*bibyte" names invented in 1998, and seldom used in
+ practice. Wikipedia's entry on "binary prefix" discusses this in
+ some detail. */
+
+char *
+human_readable (wgint n, const int acc, const int decimals)
+{
+ /* These suffixes are compatible with those of GNU `ls -lh'. */
+ static char powers[] =
+ {
+ 'K', /* kilobyte, 2^10 bytes */
+ 'M', /* megabyte, 2^20 bytes */
+ 'G', /* gigabyte, 2^30 bytes */
+ 'T', /* terabyte, 2^40 bytes */
+ 'P', /* petabyte, 2^50 bytes */
+ 'E', /* exabyte, 2^60 bytes */
+ };
+ static char buf[8];
+ size_t i;
+
+ /* If the quantity is smaller than 1K, just print it. */
+ if (n < 1024)
+ {
+ snprintf (buf, sizeof (buf), "%d", (int) n);
+ return buf;
+ }
+
+ /* Loop over powers, dividing N with 1024 in each iteration. This
+ works unchanged for all sizes of wgint, while still avoiding
+ non-portable `long double' arithmetic. */
+ for (i = 0; i < countof (powers); i++)
+ {
+ /* At each iteration N is greater than the *subsequent* power.
+ That way N/1024.0 produces a decimal number in the units of
+ *this* power. */
+ if ((n / 1024) < 1024 || i == countof (powers) - 1)
+ {
+ double val = n / 1024.0;
+ /* Print values smaller than the accuracy level (acc) with (decimal)
+ * decimal digits, and others without any decimals. */
+ snprintf (buf, sizeof (buf), "%.*f%c",
+ val < acc ? decimals : 0, val, powers[i]);
+ return buf;
+ }
+ n /= 1024;
+ }
+ return NULL; /* unreached */
+}
+
+/* Count the digits in the provided number. Used to allocate space
+ when printing numbers. */
+
+int
+numdigit (wgint number)
+{
+ int cnt = 1;
+ if (number < 0)
+ ++cnt; /* accommodate '-' */
+ while ((number /= 10) != 0)
+ ++cnt;
+ return cnt;
+}
+
+#define PR(mask) *p++ = n / (mask) + '0'
+
+/* DIGITS_<D> is used to print a D-digit number and should be called
+ with mask==10^(D-1). It prints n/mask (the first digit), reducing
+ n to n%mask (the remaining digits), and calling DIGITS_<D-1>.
+ Recursively this continues until DIGITS_1 is invoked. */
+
+#define DIGITS_1(mask) PR (mask)
+#define DIGITS_2(mask) PR (mask), n %= (mask), DIGITS_1 ((mask) / 10)
+#define DIGITS_3(mask) PR (mask), n %= (mask), DIGITS_2 ((mask) / 10)
+#define DIGITS_4(mask) PR (mask), n %= (mask), DIGITS_3 ((mask) / 10)
+#define DIGITS_5(mask) PR (mask), n %= (mask), DIGITS_4 ((mask) / 10)
+#define DIGITS_6(mask) PR (mask), n %= (mask), DIGITS_5 ((mask) / 10)
+#define DIGITS_7(mask) PR (mask), n %= (mask), DIGITS_6 ((mask) / 10)
+#define DIGITS_8(mask) PR (mask), n %= (mask), DIGITS_7 ((mask) / 10)
+#define DIGITS_9(mask) PR (mask), n %= (mask), DIGITS_8 ((mask) / 10)
+#define DIGITS_10(mask) PR (mask), n %= (mask), DIGITS_9 ((mask) / 10)
+
+/* DIGITS_<11-20> are only used on machines with 64-bit wgints. */
+
+#define DIGITS_11(mask) PR (mask), n %= (mask), DIGITS_10 ((mask) / 10)
+#define DIGITS_12(mask) PR (mask), n %= (mask), DIGITS_11 ((mask) / 10)
+#define DIGITS_13(mask) PR (mask), n %= (mask), DIGITS_12 ((mask) / 10)
+#define DIGITS_14(mask) PR (mask), n %= (mask), DIGITS_13 ((mask) / 10)
+#define DIGITS_15(mask) PR (mask), n %= (mask), DIGITS_14 ((mask) / 10)
+#define DIGITS_16(mask) PR (mask), n %= (mask), DIGITS_15 ((mask) / 10)
+#define DIGITS_17(mask) PR (mask), n %= (mask), DIGITS_16 ((mask) / 10)
+#define DIGITS_18(mask) PR (mask), n %= (mask), DIGITS_17 ((mask) / 10)
+#define DIGITS_19(mask) PR (mask), n %= (mask), DIGITS_18 ((mask) / 10)
+
+/* Shorthand for casting to wgint. */
+#define W wgint
+
+/* Print NUMBER to BUFFER in base 10. This is equivalent to
+ `sprintf(buffer, "%lld", (long long) number)', only typically much
+ faster and portable to machines without long long.
+
+ The speedup may make a difference in programs that frequently
+ convert numbers to strings. Some implementations of sprintf,
+ particularly the one in some versions of GNU libc, have been known
+ to be quite slow when converting integers to strings.
+
+ Return the pointer to the location where the terminating zero was
+ printed. (Equivalent to calling buffer+strlen(buffer) after the
+ function is done.)
+
+ BUFFER should be large enough to accept as many bytes as you expect
+ the number to take up. On machines with 64-bit wgints the maximum
+ needed size is 24 bytes. That includes the digits needed for the
+ largest 64-bit number, the `-' sign in case it's negative, and the
+ terminating '\0'. */
+
+char *
+number_to_string (char *buffer, wgint number)
+{
+ char *p = buffer;
+ wgint n = number;
+
+ int last_digit_char = 0;
+
+ if (n < 0)
+ {
+ if (n < -WGINT_MAX)
+ {
+ /* n = -n would overflow because -n would evaluate to a
+ wgint value larger than WGINT_MAX. Need to make n
+ smaller and handle the last digit separately. */
+ int last_digit = n % 10;
+ /* The sign of n%10 is implementation-defined. */
+ if (last_digit < 0)
+ last_digit_char = '0' - last_digit;
+ else
+ last_digit_char = '0' + last_digit;
+ /* After n is made smaller, -n will not overflow. */
+ n /= 10;
+ }
+
+ *p++ = '-';
+ n = -n;
+ }
+
+ /* Use the DIGITS_ macro appropriate for N's number of digits. That
+ way printing any N is fully open-coded without a loop or jump.
+ (Also see description of DIGITS_*.) */
+
+ if (n < 10) DIGITS_1 (1);
+ else if (n < 100) DIGITS_2 (10);
+ else if (n < 1000) DIGITS_3 (100);
+ else if (n < 10000) DIGITS_4 (1000);
+ else if (n < 100000) DIGITS_5 (10000);
+ else if (n < 1000000) DIGITS_6 (100000);
+ else if (n < 10000000) DIGITS_7 (1000000);
+ else if (n < 100000000) DIGITS_8 (10000000);
+ else if (n < 1000000000) DIGITS_9 (100000000);
+ else if (n < 10*(W)1000000000) DIGITS_10 (1000000000);
+ else if (n < 100*(W)1000000000) DIGITS_11 (10*(W)1000000000);
+ else if (n < 1000*(W)1000000000) DIGITS_12 (100*(W)1000000000);
+ else if (n < 10000*(W)1000000000) DIGITS_13 (1000*(W)1000000000);
+ else if (n < 100000*(W)1000000000) DIGITS_14 (10000*(W)1000000000);
+ else if (n < 1000000*(W)1000000000) DIGITS_15 (100000*(W)1000000000);
+ else if (n < 10000000*(W)1000000000) DIGITS_16 (1000000*(W)1000000000);
+ else if (n < 100000000*(W)1000000000) DIGITS_17 (10000000*(W)1000000000);
+ else if (n < 1000000000*(W)1000000000) DIGITS_18 (100000000*(W)1000000000);
+ else DIGITS_19 (1000000000*(W)1000000000);
+
+ if (last_digit_char)
+ *p++ = last_digit_char;
+
+ *p = '\0';
+
+ return p;
+}
+
+#undef PR
+#undef W
+#undef SPRINTF_WGINT
+#undef DIGITS_1
+#undef DIGITS_2
+#undef DIGITS_3
+#undef DIGITS_4
+#undef DIGITS_5
+#undef DIGITS_6
+#undef DIGITS_7
+#undef DIGITS_8
+#undef DIGITS_9
+#undef DIGITS_10
+#undef DIGITS_11
+#undef DIGITS_12
+#undef DIGITS_13
+#undef DIGITS_14
+#undef DIGITS_15
+#undef DIGITS_16
+#undef DIGITS_17
+#undef DIGITS_18
+#undef DIGITS_19
+
+#define RING_SIZE 3
+
+/* Print NUMBER to a statically allocated string and return a pointer
+ to the printed representation.
+
+ This function is intended to be used in conjunction with printf.
+ It is hard to portably print wgint values:
+ a) you cannot use printf("%ld", number) because wgint can be long
+ long on 32-bit machines with LFS.
+ b) you cannot use printf("%lld", number) because NUMBER could be
+ long on 32-bit machines without LFS, or on 64-bit machines,
+ which do not require LFS. Also, Windows doesn't support %lld.
+ c) you cannot use printf("%j", (int_max_t) number) because not all
+ versions of printf support "%j", the most notable being the one
+ on Windows.
+ d) you cannot #define WGINT_FMT to the appropriate format and use
+ printf(WGINT_FMT, number) because that would break translations
+ for user-visible messages, such as printf("Downloaded: %d
+ bytes\n", number).
+
+ What you should use instead is printf("%s", number_to_static_string
+ (number)).
+
+ CAVEAT: since the function returns pointers to static data, you
+ must be careful to copy its result before calling it again.
+ However, to make it more useful with printf, the function maintains
+ an internal ring of static buffers to return. That way things like
+ printf("%s %s", number_to_static_string (num1),
+ number_to_static_string (num2)) work as expected. Three buffers
+ are currently used, which means that "%s %s %s" will work, but "%s
+ %s %s %s" won't. If you need to print more than three wgints,
+ bump the RING_SIZE (or rethink your message.) */
+
+char *
+number_to_static_string (wgint number)
+{
+ static char ring[RING_SIZE][24];
+ static int ringpos;
+ char *buf = ring[ringpos];
+ number_to_string (buf, number);
+ ringpos = (ringpos + 1) % RING_SIZE;
+ return buf;
+}
+
+/* Converts the byte to bits format if --report-bps option is enabled
+ */
+wgint
+convert_to_bits (wgint num)
+{
+ if (opt.report_bps)
+ return num * 8;
+ return num;
+}
+
+
+/* Determine the width of the terminal we're running on. If that's
+ not possible, return 0. */
+
+int
+determine_screen_width (void)
+{
+ /* If there's a way to get the terminal size using POSIX
+ tcgetattr(), somebody please tell me. */
+#ifdef TIOCGWINSZ
+ int fd;
+ struct winsize wsz;
+
+ if (opt.lfilename != NULL && opt.show_progress != 1)
+ return 0;
+
+ fd = fileno (stderr);
+ if (ioctl (fd, TIOCGWINSZ, &wsz) < 0)
+ return 0; /* most likely ENOTTY */
+
+ return wsz.ws_col;
+#elif defined(WINDOWS)
+ CONSOLE_SCREEN_BUFFER_INFO csbi;
+ if (!GetConsoleScreenBufferInfo (GetStdHandle (STD_ERROR_HANDLE), &csbi))
+ return 0;
+ return csbi.dwSize.X;
+#else /* neither TIOCGWINSZ nor WINDOWS */
+ return 0;
+#endif /* neither TIOCGWINSZ nor WINDOWS */
+}
+
+/* Whether the rnd system (either rand or [dl]rand48) has been
+ seeded. */
+static int rnd_seeded;
+
+/* Return a random number between 0 and MAX-1, inclusive.
+
+ If the system does not support lrand48 and MAX is greater than the
+ value of RAND_MAX+1 on the system, the returned value will be in
+ the range [0, RAND_MAX]. This may be fixed in a future release.
+ The random number generator is seeded automatically the first time
+ it is called.
+
+ This uses lrand48 where available, rand elsewhere. DO NOT use it
+ for cryptography. It is only meant to be used in situations where
+ quality of the random numbers returned doesn't really matter. */
+
+int
+random_number (int max)
+{
+#ifdef HAVE_RANDOM
+ if (!rnd_seeded)
+ {
+ srandom ((long) time (NULL) ^ (long) getpid ());
+ rnd_seeded = 1;
+ }
+ return random () % max;
+#elif defined HAVE_DRAND48
+ if (!rnd_seeded)
+ {
+ srand48 ((long) time (NULL) ^ (long) getpid ());
+ rnd_seeded = 1;
+ }
+ return lrand48 () % max;
+#else /* not HAVE_DRAND48 */
+
+ double bounded;
+ int rnd;
+ if (!rnd_seeded)
+ {
+ srand ((unsigned) time (NULL) ^ (unsigned) getpid ());
+ rnd_seeded = 1;
+ }
+ rnd = rand ();
+
+ /* Like rand() % max, but uses the high-order bits for better
+ randomness on architectures where rand() is implemented using a
+ simple congruential generator. */
+
+ bounded = (double) max * rnd / (RAND_MAX + 1.0);
+ return (int) bounded;
+
+#endif /* not HAVE_DRAND48 */
+}
+
+/* Return a random uniformly distributed floating point number in the
+ [0, 1) range. Uses drand48 where available, and a really lame
+ kludge elsewhere. */
+
+double
+random_float (void)
+{
+#ifdef HAVE_RANDOM
+ return ((double) random_number (RAND_MAX)) / RAND_MAX;
+#elif defined HAVE_DRAND48
+ if (!rnd_seeded)
+ {
+ srand48 ((long) time (NULL) ^ (long) getpid ());
+ rnd_seeded = 1;
+ }
+ return drand48 ();
+#else /* not HAVE_DRAND48 */
+ return ( random_number (10000) / 10000.0
+ + random_number (10000) / (10000.0 * 10000.0)
+ + random_number (10000) / (10000.0 * 10000.0 * 10000.0)
+ + random_number (10000) / (10000.0 * 10000.0 * 10000.0 * 10000.0));
+#endif /* not HAVE_DRAND48 */
+}
+
+/* Implementation of run_with_timeout, a generic timeout-forcing
+ routine for systems with Unix-like signal handling. */
+
+#ifdef USE_SIGNAL_TIMEOUT
+# ifdef HAVE_SIGSETJMP
+# define SETJMP(env) sigsetjmp (env, 1)
+
+static sigjmp_buf run_with_timeout_env;
+
+_Noreturn static void
+abort_run_with_timeout (int sig _GL_UNUSED)
+{
+ assert (sig == SIGALRM);
+ siglongjmp (run_with_timeout_env, -1);
+}
+# else /* not HAVE_SIGSETJMP */
+# define SETJMP(env) setjmp (env)
+
+static jmp_buf run_with_timeout_env;
+
+static void _Noreturn
+abort_run_with_timeout (int sig _GL_UNUSED)
+{
+ assert (sig == SIGALRM);
+ /* We don't have siglongjmp to preserve the set of blocked signals;
+ if we longjumped out of the handler at this point, SIGALRM would
+ remain blocked. We must unblock it manually. */
+ sigset_t set;
+ sigemptyset (&set);
+ sigaddset (&set, SIGALRM);
+ sigprocmask (SIG_BLOCK, &set, NULL);
+
+ /* Now it's safe to longjump. */
+ longjmp (run_with_timeout_env, -1);
+}
+# endif /* not HAVE_SIGSETJMP */
+
+/* Arrange for SIGALRM to be delivered in TIMEOUT seconds. This uses
+ setitimer where available, alarm otherwise.
+
+ TIMEOUT should be non-zero. If the timeout value is so small that
+ it would be rounded to zero, it is rounded to the least legal value
+ instead (1us for setitimer, 1s for alarm). That ensures that
+ SIGALRM will be delivered in all cases. */
+
+static void
+alarm_set (double timeout)
+{
+#ifdef ITIMER_REAL
+ /* Use the modern itimer interface. */
+ struct itimerval itv;
+ xzero (itv);
+ itv.it_value.tv_sec = (long) timeout;
+ itv.it_value.tv_usec = 1000000 * (timeout - (long)timeout);
+ if (itv.it_value.tv_sec == 0 && itv.it_value.tv_usec == 0)
+ /* Ensure that we wait for at least the minimum interval.
+ Specifying zero would mean "wait forever". */
+ itv.it_value.tv_usec = 1;
+ setitimer (ITIMER_REAL, &itv, NULL);
+#else /* not ITIMER_REAL */
+ /* Use the old alarm() interface. */
+ int secs = (int) timeout;
+ if (secs == 0)
+ /* Round TIMEOUTs smaller than 1 to 1, not to zero. This is
+ because alarm(0) means "never deliver the alarm", i.e. "wait
+ forever", which is not what someone who specifies a 0.5s
+ timeout would expect. */
+ secs = 1;
+ alarm (secs);
+#endif /* not ITIMER_REAL */
+}
+
+/* Cancel the alarm set with alarm_set. */
+
+static void
+alarm_cancel (void)
+{
+#ifdef ITIMER_REAL
+ struct itimerval disable;
+ xzero (disable);
+ setitimer (ITIMER_REAL, &disable, NULL);
+#else /* not ITIMER_REAL */
+ alarm (0);
+#endif /* not ITIMER_REAL */
+}
+
+/* Call FUN(ARG), but don't allow it to run for more than TIMEOUT
+ seconds. Returns true if the function was interrupted with a
+ timeout, false otherwise.
+
+ This works by setting up SIGALRM to be delivered in TIMEOUT seconds
+ using setitimer() or alarm(). The timeout is enforced by
+ longjumping out of the SIGALRM handler. This has several
+ advantages compared to the traditional approach of relying on
+ signals causing system calls to exit with EINTR:
+
+ * The callback function is *forcibly* interrupted after the
+ timeout expires, (almost) regardless of what it was doing and
+ whether it was in a syscall. For example, a calculation that
+ takes a long time is interrupted as reliably as an IO
+ operation.
+
+ * It works with both SYSV and BSD signals because it doesn't
+ depend on the default setting of SA_RESTART.
+
+ * It doesn't require special handler setup beyond a simple call
+ to signal(). (It does use sigsetjmp/siglongjmp, but they're
+ optional.)
+
+ The only downside is that, if FUN allocates internal resources that
+ are normally freed prior to exit from the functions, they will be
+ lost in case of timeout. */
+
+bool
+run_with_timeout (double timeout, void (*fun) (void *), void *arg)
+{
+ int saved_errno;
+
+ if (timeout == 0)
+ {
+ fun (arg);
+ return false;
+ }
+
+ if (SETJMP (run_with_timeout_env) != 0)
+ {
+ /* Longjumped out of FUN with a timeout. */
+ signal (SIGALRM, SIG_DFL);
+ return true;
+ }
+ else
+ {
+ signal (SIGALRM, abort_run_with_timeout);
+ }
+ alarm_set (timeout);
+ fun (arg);
+
+ /* Preserve errno in case alarm() or signal() modifies it. */
+ saved_errno = errno;
+ alarm_cancel ();
+ signal (SIGALRM, SIG_DFL);
+ errno = saved_errno;
+
+ return false;
+}
+
+#else /* not USE_SIGNAL_TIMEOUT */
+
+#ifndef WINDOWS
+/* A stub version of run_with_timeout that just calls FUN(ARG). Don't
+ define it under Windows, because Windows has its own version of
+ run_with_timeout that uses threads. */
+
+bool
+run_with_timeout (double timeout, void (*fun) (void *), void *arg)
+{
+ fun (arg);
+ return false;
+}
+#endif /* not WINDOWS */
+#endif /* not USE_SIGNAL_TIMEOUT */
+
+#ifndef WINDOWS
+
+/* Sleep the specified amount of seconds. On machines without
+ nanosleep(), this may sleep shorter if interrupted by signals. */
+
+void
+xsleep (double seconds)
+{
+#ifdef HAVE_NANOSLEEP
+ /* nanosleep is the preferred interface because it offers high
+ accuracy and, more importantly, because it allows us to reliably
+ restart receiving a signal such as SIGWINCH. (There was an
+ actual Debian bug report about --limit-rate malfunctioning while
+ the terminal was being resized.) */
+ struct timespec sleep, remaining;
+ sleep.tv_sec = (long) seconds;
+ sleep.tv_nsec = 1000000000 * (seconds - (long) seconds);
+ while (nanosleep (&sleep, &remaining) < 0 && errno == EINTR)
+ /* If nanosleep has been interrupted by a signal, adjust the
+ sleeping period and return to sleep. */
+ sleep = remaining;
+#elif defined(HAVE_USLEEP)
+ /* If usleep is available, use it in preference to select. */
+ if (seconds >= 1)
+ {
+ /* On some systems, usleep cannot handle values larger than
+ 1,000,000. If the period is larger than that, use sleep
+ first, then add usleep for subsecond accuracy. */
+ sleep (seconds);
+ seconds -= (long) seconds;
+ }
+ usleep (seconds * 1000000);
+#else /* fall back select */
+ /* Note that, although Windows supports select, it can't be used to
+ implement sleeping because Winsock's select doesn't implement
+ timeout when it is passed NULL pointers for all fd sets. (But it
+ does under Cygwin, which implements Unix-compatible select.) */
+ struct timeval sleep;
+ sleep.tv_sec = (long) seconds;
+ sleep.tv_usec = 1000000 * (seconds - (long) seconds);
+ select (0, NULL, NULL, NULL, &sleep);
+ /* If select returns -1 and errno is EINTR, it means we were
+ interrupted by a signal. But without knowing how long we've
+ actually slept, we can't return to sleep. Using gettimeofday to
+ track sleeps is slow and unreliable due to clock skew. */
+#endif
+}
+
+#endif /* not WINDOWS */
+
+/* Encode the octets in DATA of length LENGTH to base64 format,
+ storing the result to DEST. The output will be zero-terminated,
+ and must point to a writable buffer of at least
+ 1+BASE64_LENGTH(length) bytes. The function returns the length of
+ the resulting base64 data, not counting the terminating zero.
+
+ This implementation does not emit newlines after 76 characters of
+ base64 data. */
+
+size_t
+wget_base64_encode (const void *data, size_t length, char *dest)
+{
+ /* Conversion table. */
+ static const char tbl[64] = {
+ 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
+ 'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f',
+ 'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v',
+ 'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/'
+ };
+ /* Access bytes in DATA as unsigned char, otherwise the shifts below
+ don't work for data with MSB set. */
+ const unsigned char *s = data;
+ /* Theoretical ANSI violation when length < 3. */
+ const unsigned char *end = (const unsigned char *) data + length - 2;
+ char *p = dest;
+
+ /* Transform the 3x8 bits to 4x6 bits, as required by base64. */
+ for (; s < end; s += 3)
+ {
+ *p++ = tbl[s[0] >> 2];
+ *p++ = tbl[((s[0] & 3) << 4) + (s[1] >> 4)];
+ *p++ = tbl[((s[1] & 0xf) << 2) + (s[2] >> 6)];
+ *p++ = tbl[s[2] & 0x3f];
+ }
+
+ /* Pad the result if necessary... */
+ switch (length % 3)
+ {
+ case 1:
+ *p++ = tbl[s[0] >> 2];
+ *p++ = tbl[(s[0] & 3) << 4];
+ *p++ = '=';
+ *p++ = '=';
+ break;
+ case 2:
+ *p++ = tbl[s[0] >> 2];
+ *p++ = tbl[((s[0] & 3) << 4) + (s[1] >> 4)];
+ *p++ = tbl[((s[1] & 0xf) << 2)];
+ *p++ = '=';
+ break;
+ }
+ /* ...and zero-terminate it. */
+ *p = '\0';
+
+ return p - dest;
+}
+
+/* Store in C the next non-whitespace character from the string, or \0
+ when end of string is reached. */
+#define NEXT_CHAR(c, p) do { \
+ c = (unsigned char) *p++; \
+} while (c_isspace (c))
+
+#define IS_ASCII(c) (((c) & 0x80) == 0)
+
+/* Decode data from BASE64 (a null-terminated string) into memory
+ pointed to by DEST. DEST is assumed to be large enough to
+ accommodate the decoded data, which is guaranteed to be no more than
+ 3/4*strlen(base64).
+
+ Since DEST is assumed to contain binary data, it is not
+ NUL-terminated. The function returns the length of the data
+ written to "TO". -1 is returned in case of error caused by malformed
+ base64 input.
+
+ This function originates from Free Recode. */
+
+ssize_t
+wget_base64_decode (const char *base64, void *dest, size_t size)
+{
+ /* Table of base64 values for first 128 characters. Note that this
+ assumes ASCII (but so does Wget in other places). */
+ static const signed char base64_char_to_value[128] =
+ {
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0- 9 */
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 10- 19 */
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 20- 29 */
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 30- 39 */
+ -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, /* 40- 49 */
+ 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, /* 50- 59 */
+ -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, /* 60- 69 */
+ 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, /* 70- 79 */
+ 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, /* 80- 89 */
+ 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, /* 90- 99 */
+ 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, /* 100-109 */
+ 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, /* 110-119 */
+ 49, 50, 51, -1, -1, -1, -1, -1 /* 120-127 */
+ };
+#define BASE64_CHAR_TO_VALUE(c) ((int) base64_char_to_value[c])
+#define IS_BASE64(c) ((IS_ASCII (c) && BASE64_CHAR_TO_VALUE (c) >= 0) || c == '=')
+
+ const char *p = base64;
+ unsigned char *q = dest;
+ ssize_t n = 0;
+
+ while (1)
+ {
+ unsigned char c;
+ unsigned long value;
+
+ /* Process first byte of a quadruplet. */
+ NEXT_CHAR (c, p);
+ if (!c)
+ break;
+ if (c == '=' || !IS_BASE64 (c))
+ return -1; /* illegal char while decoding base64 */
+ value = BASE64_CHAR_TO_VALUE (c) << 18;
+
+ /* Process second byte of a quadruplet. */
+ NEXT_CHAR (c, p);
+ if (!c)
+ return -1; /* premature EOF while decoding base64 */
+ if (c == '=' || !IS_BASE64 (c))
+ return -1; /* illegal char while decoding base64 */
+ value |= BASE64_CHAR_TO_VALUE (c) << 12;
+ if (size)
+ {
+ *q++ = value >> 16;
+ size--;
+ }
+ n++;
+
+ /* Process third byte of a quadruplet. */
+ NEXT_CHAR (c, p);
+ if (!c)
+ return -1; /* premature EOF while decoding base64 */
+ if (!IS_BASE64 (c))
+ return -1; /* illegal char while decoding base64 */
+
+ if (c == '=')
+ {
+ NEXT_CHAR (c, p);
+ if (!c)
+ return -1; /* premature EOF while decoding base64 */
+ if (c != '=')
+ return -1; /* padding `=' expected but not found */
+ continue;
+ }
+
+ value |= BASE64_CHAR_TO_VALUE (c) << 6;
+ if (size)
+ {
+ *q++ = 0xff & value >> 8;
+ size--;
+ }
+ n++;
+
+ /* Process fourth byte of a quadruplet. */
+ NEXT_CHAR (c, p);
+ if (!c)
+ return -1; /* premature EOF while decoding base64 */
+ if (c == '=')
+ continue;
+ if (!IS_BASE64 (c))
+ return -1; /* illegal char while decoding base64 */
+
+ value |= BASE64_CHAR_TO_VALUE (c);
+ if (size)
+ {
+ *q++ = 0xff & value;
+ size--;
+ }
+ n++;
+ }
+#undef IS_BASE64
+#undef BASE64_CHAR_TO_VALUE
+
+ return n;
+}
+
+#ifdef HAVE_LIBPCRE2
+/* Compiles the PCRE2 regex. */
+void *
+compile_pcre2_regex (const char *str)
+{
+ int errornumber;
+ PCRE2_SIZE erroroffset;
+ pcre2_code *regex = pcre2_compile((PCRE2_SPTR) str, PCRE2_ZERO_TERMINATED, 0, &errornumber, &erroroffset, NULL);
+ if (! regex)
+ {
+ fprintf (stderr, _("Invalid regular expression %s, PCRE2 error %d\n"),
+ quote (str), errornumber);
+ }
+ return regex;
+}
+#endif
+
+#ifdef HAVE_LIBPCRE
+/* Compiles the PCRE regex. */
+void *
+compile_pcre_regex (const char *str)
+{
+ const char *errbuf;
+ int erroffset;
+ pcre *regex = pcre_compile (str, 0, &errbuf, &erroffset, 0);
+ if (! regex)
+ {
+ fprintf (stderr, _("Invalid regular expression %s, %s\n"),
+ quote (str), errbuf);
+ }
+ return regex;
+}
+#endif
+
+/* Compiles the POSIX regex. */
+void *
+compile_posix_regex (const char *str)
+{
+ regex_t *regex = xmalloc (sizeof (regex_t));
+#ifdef TESTING
+ /* regcomp might be *very* cpu+memory intensive,
+ * see https://sourceware.org/glibc/wiki/Security%20Exceptions */
+ str = "a";
+#endif
+ int errcode = regcomp ((regex_t *) regex, str, REG_EXTENDED | REG_NOSUB);
+ if (errcode != 0)
+ {
+ size_t errbuf_size = regerror (errcode, (regex_t *) regex, NULL, 0);
+ char *errbuf = xmalloc (errbuf_size);
+ regerror (errcode, (regex_t *) regex, errbuf, errbuf_size);
+ fprintf (stderr, _("Invalid regular expression %s, %s\n"),
+ quote (str), errbuf);
+ xfree (errbuf);
+ xfree (regex);
+ return NULL;
+ }
+
+ return regex;
+}
+
+#ifdef HAVE_LIBPCRE2
+/* Matches a PCRE2 regex. */
+bool
+match_pcre2_regex (const void *regex, const char *str)
+{
+ int rc;
+ pcre2_match_data *match_data;
+
+ match_data = pcre2_match_data_create_from_pattern(regex, NULL);
+
+ if (match_data)
+ {
+ rc = pcre2_match(regex, (PCRE2_SPTR) str, strlen(str), 0, 0, match_data, NULL);
+ pcre2_match_data_free(match_data);
+ }
+ else
+ rc = PCRE2_ERROR_NOMEMORY;
+
+ if (rc < 0 && rc != PCRE2_ERROR_NOMATCH)
+ {
+ logprintf (LOG_VERBOSE, _("Error while matching %s: %d\n"),
+ quote (str), rc);
+ }
+
+ return rc >= 0;
+}
+#endif
+
+#ifdef HAVE_LIBPCRE
+#define OVECCOUNT 30
+/* Matches a PCRE regex. */
+bool
+match_pcre_regex (const void *regex, const char *str)
+{
+ size_t l = strlen (str);
+ int ovector[OVECCOUNT];
+
+ int rc = pcre_exec ((pcre *) regex, 0, str, (int) l, 0, 0, ovector, OVECCOUNT);
+ if (rc == PCRE_ERROR_NOMATCH)
+ return false;
+ else if (rc < 0)
+ {
+ logprintf (LOG_VERBOSE, _("Error while matching %s: %d\n"),
+ quote (str), rc);
+ return false;
+ }
+ else
+ return true;
+}
+#undef OVECCOUNT
+#endif
+
+/* Matches a POSIX regex. */
+bool
+match_posix_regex (const void *regex, const char *str)
+{
+ int rc = regexec ((regex_t *) regex, str, 0, NULL, 0);
+ if (rc == REG_NOMATCH)
+ return false;
+ else if (rc == 0)
+ return true;
+ else
+ {
+ size_t errbuf_size = regerror (rc, opt.acceptregex, NULL, 0);
+ char *errbuf = xmalloc (errbuf_size);
+ regerror (rc, opt.acceptregex, errbuf, errbuf_size);
+ logprintf (LOG_VERBOSE, _("Error while matching %s: %d\n"),
+ quote (str), rc);
+ xfree (errbuf);
+ return false;
+ }
+}
+
+#undef IS_ASCII
+#undef NEXT_CHAR
+
+/* Simple merge sort for use by stable_sort. Implementation courtesy
+ Zeljko Vrba with additional debugging by Nenad Barbutov. */
+
+static void
+mergesort_internal (void *base, void *temp, size_t size, size_t from, size_t to,
+ int (*cmpfun) (const void *, const void *))
+{
+#define ELT(array, pos) ((char *)(array) + (pos) * size)
+ if (from < to)
+ {
+ size_t i, j, k;
+ size_t mid = (to + from) / 2;
+ mergesort_internal (base, temp, size, from, mid, cmpfun);
+ mergesort_internal (base, temp, size, mid + 1, to, cmpfun);
+ i = from;
+ j = mid + 1;
+ for (k = from; (i <= mid) && (j <= to); k++)
+ if (cmpfun (ELT (base, i), ELT (base, j)) <= 0)
+ memcpy (ELT (temp, k), ELT (base, i++), size);
+ else
+ memcpy (ELT (temp, k), ELT (base, j++), size);
+ while (i <= mid)
+ memcpy (ELT (temp, k++), ELT (base, i++), size);
+ while (j <= to)
+ memcpy (ELT (temp, k++), ELT (base, j++), size);
+ for (k = from; k <= to; k++)
+ memcpy (ELT (base, k), ELT (temp, k), size);
+ }
+#undef ELT
+}
+
+/* Stable sort with interface exactly like standard library's qsort.
+ Uses mergesort internally. */
+
+void
+stable_sort (void *base, size_t nmemb, size_t size,
+ int (*cmpfun) (const void *, const void *))
+{
+ if (nmemb > 1 && size > 1)
+ {
+ void *temp = xmalloc (nmemb * size);
+ mergesort_internal (base, temp, size, 0, nmemb - 1, cmpfun);
+ xfree(temp);
+ }
+}
+
+/* Print a decimal number. If it is equal to or larger than ten, the
+ number is rounded. Otherwise it is printed with one significant
+ digit without trailing zeros and with no more than three fractional
+ digits total. For example, 0.1 is printed as "0.1", 0.035 is
+ printed as "0.04", 0.0091 as "0.009", and 0.0003 as simply "0".
+
+ This is useful for displaying durations because it provides
+ order-of-magnitude information without unnecessary clutter --
+ long-running downloads are shown without the fractional part, and
+ short ones still retain one significant digit. */
+
+const char *
+print_decimal (double number)
+{
+ static char buf[32];
+ double n = number >= 0 ? number : -number;
+
+ if (n >= 9.95)
+ /* Cut off at 9.95 because the below %.1f would round 9.96 to
+ "10.0" instead of "10". OTOH 9.94 will print as "9.9". */
+ snprintf (buf, sizeof buf, "%.0f", number);
+ else if (n >= 0.95)
+ snprintf (buf, sizeof buf, "%.1f", number);
+ else if (n >= 0.001)
+ snprintf (buf, sizeof buf, "%.1g", number);
+ else if (n >= 0.0005)
+ /* round [0.0005, 0.001) to 0.001 */
+ snprintf (buf, sizeof buf, "%.3f", number);
+ else
+ /* print numbers close to 0 as 0, not 0.000 */
+ strcpy (buf, "0");
+
+ return buf;
+}
+
+/* Get the maximum name length for the given path. */
+/* Return 0 if length is unknown. */
+long
+get_max_length (const char *path, int length, int name)
+{
+ long ret;
+ char *p, *d;
+
+ /* Make a copy of the path that we can modify. */
+ p = path ? strdupdelim (path, path + length) : strdup ("");
+
+ for (;;)
+ {
+ errno = 0;
+ /* For an empty path query the current directory. */
+#if HAVE_PATHCONF
+ ret = pathconf (*p ? p : ".", name);
+ if (!(ret < 0 && errno == ENOENT))
+ break;
+#else
+ ret = PATH_MAX;
+#endif
+
+ /* The path does not exist yet, but may be created. */
+ /* Already at current or root directory, give up. */
+ if (!*p || strcmp (p, "/") == 0)
+ break;
+
+ /* Remove one directory level and try again. */
+ d = strrchr (p, '/');
+ if (d == p)
+ p[1] = '\0'; /* check root directory */
+ else if (d)
+ *d = '\0'; /* remove last directory part */
+ else
+ *p = '\0'; /* check current directory */
+ }
+
+ xfree (p);
+
+ if (ret < 0)
+ {
+ /* pathconf() has a message for us. */
+ if (errno != 0)
+ perror ("pathconf");
+
+ /* If (errno == 0) then there is no max length.
+ Even on error return 0 so the caller can continue. */
+ return 0;
+ }
+
+ return ret;
+}
+
+void
+wg_hex_to_string (char *str_buffer, const char *hex_buffer, size_t hex_len)
+{
+ size_t i;
+
+ for (i = 0; i < hex_len; i++)
+ {
+ /* Each byte takes 2 characters. */
+ sprintf (str_buffer + 2 * i, "%02x", (unsigned) (hex_buffer[i] & 0xFF));
+ }
+
+ /* Null-terminate result. */
+ str_buffer[2 * i] = '\0';
+}
+
+#ifdef HAVE_SSL
+
+/*
+ * Public key pem to der conversion
+ */
+
+static bool
+wg_pubkey_pem_to_der (const char *pem, unsigned char **der, size_t *der_len)
+{
+ char *stripped_pem, *begin_pos, *end_pos;
+ size_t pem_count, stripped_pem_count = 0, pem_len;
+ ssize_t size;
+ unsigned char *base64data;
+
+ *der = NULL;
+ *der_len = 0;
+
+ /* if no pem, exit. */
+ if (!pem)
+ return false;
+
+ begin_pos = strstr (pem, "-----BEGIN PUBLIC KEY-----");
+ if (!begin_pos)
+ return false;
+
+ pem_count = begin_pos - pem;
+ /* Invalid if not at beginning AND not directly following \n */
+ if (0 != pem_count && '\n' != pem[pem_count - 1])
+ return false;
+
+ /* 26 is length of "-----BEGIN PUBLIC KEY-----" */
+ pem_count += 26;
+
+ /* Invalid if not directly following \n */
+ end_pos = strstr (pem + pem_count, "\n-----END PUBLIC KEY-----");
+ if (!end_pos)
+ return false;
+
+ pem_len = end_pos - pem;
+
+ stripped_pem = xmalloc (pem_len - pem_count + 1);
+
+ /*
+ * Here we loop through the pem array one character at a time between the
+ * correct indices, and place each character that is not '\n' or '\r'
+ * into the stripped_pem array, which should represent the raw base64 string
+ */
+ while (pem_count < pem_len) {
+ if ('\n' != pem[pem_count] && '\r' != pem[pem_count])
+ stripped_pem[stripped_pem_count++] = pem[pem_count];
+ ++pem_count;
+ }
+ /* Place the null terminator in the correct place */
+ stripped_pem[stripped_pem_count] = '\0';
+
+ base64data = xmalloc (BASE64_LENGTH(stripped_pem_count));
+
+ size = wget_base64_decode (stripped_pem, base64data, BASE64_LENGTH(stripped_pem_count));
+
+ if (size < 0) {
+ xfree (base64data); /* malformed base64 from server */
+ } else {
+ *der = base64data;
+ *der_len = (size_t) size;
+ }
+
+ xfree (stripped_pem);
+
+ return *der_len > 0;
+}
+
+/*
+ * Generic pinned public key check.
+ */
+
+bool
+wg_pin_peer_pubkey (const char *pinnedpubkey, const char *pubkey, size_t pubkeylen)
+{
+ struct file_memory *fm;
+ unsigned char *buf = NULL, *pem_ptr = NULL;
+ size_t size, pem_len;
+ bool pem_read;
+ bool result = false;
+
+ size_t pinkeylen;
+ ssize_t decoded_hash_length;
+ char *pinkeycopy, *begin_pos, *end_pos;
+ unsigned char *sha256sumdigest = NULL, *expectedsha256sumdigest = NULL;
+
+ /* if a path wasn't specified, don't pin */
+ if (!pinnedpubkey)
+ return true;
+ if (!pubkey || !pubkeylen)
+ return result;
+
+ /* only do this if pinnedpubkey starts with "sha256//", length 8 */
+ if (strncmp (pinnedpubkey, "sha256//", 8) == 0)
+ {
+ /* compute sha256sum of public key */
+ sha256sumdigest = xmalloc (SHA256_DIGEST_SIZE);
+ sha256_buffer (pubkey, pubkeylen, sha256sumdigest);
+ expectedsha256sumdigest = xmalloc (SHA256_DIGEST_SIZE);
+
+ /* it starts with sha256//, copy so we can modify it */
+ pinkeylen = strlen (pinnedpubkey) + 1;
+ pinkeycopy = xmalloc (pinkeylen);
+ memcpy (pinkeycopy, pinnedpubkey, pinkeylen);
+
+ /* point begin_pos to the copy, and start extracting keys */
+ begin_pos = pinkeycopy;
+ do
+ {
+ end_pos = strstr (begin_pos, ";sha256//");
+ /*
+ * if there is an end_pos, null terminate,
+ * otherwise it'll go to the end of the original string
+ */
+ if (end_pos)
+ end_pos[0] = '\0';
+
+ /* decode base64 pinnedpubkey, 8 is length of "sha256//" */
+ decoded_hash_length = wget_base64_decode (begin_pos + 8, expectedsha256sumdigest, SHA256_DIGEST_SIZE);
+
+ /* if valid base64, compare sha256 digests directly */
+ if (SHA256_DIGEST_SIZE == decoded_hash_length)
+ {
+ if (!memcmp (sha256sumdigest, expectedsha256sumdigest, SHA256_DIGEST_SIZE))
+ {
+ result = true;
+ break;
+ }
+ }
+ else
+ logprintf (LOG_VERBOSE, _ ("Skipping key with wrong size (%d/%d): %s\n"),
+ (int) (strlen (begin_pos + 8) * 3) / 4, SHA256_DIGEST_SIZE,
+ quote (begin_pos + 8));
+
+ /*
+ * change back the null-terminator we changed earlier,
+ * and look for next begin
+ */
+ if (end_pos)
+ {
+ end_pos[0] = ';';
+ begin_pos = strstr (end_pos, "sha256//");
+ }
+ }
+ while (end_pos && begin_pos);
+
+ xfree (sha256sumdigest);
+ xfree (expectedsha256sumdigest);
+ xfree (pinkeycopy);
+
+ return result;
+ }
+
+ /* fall back to assuming this is a file path */
+ fm = wget_read_file (pinnedpubkey);
+ if (!fm)
+ return result;
+
+ /* Check the file's size */
+ if (fm->length < 0 || fm->length > MAX_PINNED_PUBKEY_SIZE)
+ goto cleanup;
+
+ /*
+ * if the size of our certificate is bigger than the file
+ * size then it can't match
+ */
+ size = (size_t) fm->length;
+ if (pubkeylen > size)
+ goto cleanup;
+
+ /* If the sizes are the same, it can't be base64 encoded, must be der */
+ if (pubkeylen == size)
+ {
+ if (!memcmp (pubkey, fm->content, pubkeylen))
+ result = true;
+ goto cleanup;
+ }
+
+ /*
+ * Otherwise we will assume it's PEM and try to decode it
+ * after placing null terminator
+ */
+ buf = xmalloc (size + 1);
+ memcpy (buf, fm->content, size);
+ buf[size] = '\0';
+
+ pem_read = wg_pubkey_pem_to_der ((const char *) buf, &pem_ptr, &pem_len);
+ /* if it wasn't read successfully, exit */
+ if (!pem_read)
+ goto cleanup;
+
+ /*
+ * if the size of our certificate doesn't match the size of
+ * the decoded file, they can't be the same, otherwise compare
+ */
+ if (pubkeylen == pem_len && !memcmp (pubkey, pem_ptr, pubkeylen))
+ result = true;
+
+cleanup:
+ xfree (buf);
+ xfree (pem_ptr);
+ wget_read_file_free (fm);
+
+ return result;
+}
+
+#endif /* HAVE_SSL */
+
+#ifdef TESTING
+
+const char *
+test_subdir_p(void)
+{
+ static const struct {
+ const char *d1;
+ const char *d2;
+ bool result;
+ } test_array[] = {
+ { "/somedir", "/somedir", true },
+ { "/somedir", "/somedir/d2", true },
+ { "/somedir/d1", "/somedir", false },
+ };
+ unsigned i;
+
+ for (i = 0; i < countof(test_array); ++i)
+ {
+ bool res = subdir_p (test_array[i].d1, test_array[i].d2);
+
+ mu_assert ("test_subdir_p: wrong result",
+ res == test_array[i].result);
+ }
+
+ return NULL;
+}
+
+const char *
+test_dir_matches_p(void)
+{
+ static struct {
+ const char *dirlist[3];
+ const char *dir;
+ bool result;
+ } test_array[] = {
+ { { "/somedir", "/someotherdir", NULL }, "somedir", true },
+ { { "/somedir", "/someotherdir", NULL }, "anotherdir", false },
+ { { "/somedir", "/*otherdir", NULL }, "anotherdir", true },
+ { { "/somedir/d1", "/someotherdir", NULL }, "somedir/d1", true },
+ { { "*/*d1", "/someotherdir", NULL }, "somedir/d1", true },
+ { { "/somedir/d1", "/someotherdir", NULL }, "d1", false },
+ { { "!COMPLETE", NULL, NULL }, "!COMPLETE", true },
+ { { "*COMPLETE", NULL, NULL }, "!COMPLETE", true },
+ { { "*/!COMPLETE", NULL, NULL }, "foo/!COMPLETE", true },
+ { { "*COMPLETE", NULL, NULL }, "foo/!COMPLETE", false },
+ { { "*/*COMPLETE", NULL, NULL }, "foo/!COMPLETE", true },
+ { { "/dir with spaces", NULL, NULL }, "dir with spaces", true },
+ { { "/dir*with*spaces", NULL, NULL }, "dir with spaces", true },
+ { { "/Tmp/has", NULL, NULL }, "/Tmp/has space", false },
+ { { "/Tmp/has", NULL, NULL }, "/Tmp/has,comma", false },
+ };
+ unsigned i;
+
+ for (i = 0; i < countof(test_array); ++i)
+ {
+ bool res = dir_matches_p (test_array[i].dirlist, test_array[i].dir);
+
+ mu_assert ("test_dir_matches_p: wrong result",
+ res == test_array[i].result);
+ }
+
+ return NULL;
+}
+
+#endif /* TESTING */
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