-const char miscutil_rcs[] = "$Id: miscutil.c,v 1.51 2007/06/17 16:12:22 fabiankeil Exp $";
+const char miscutil_rcs[] = "$Id: miscutil.c,v 1.63 2009/05/16 13:27:20 fabiankeil Exp $";
/*********************************************************************
*
* File : $Source: /cvsroot/ijbswa/current/miscutil.c,v $
* or write to the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
- * Revisions :
- * $Log: miscutil.c,v $
- * Revision 1.51 2007/06/17 16:12:22 fabiankeil
- * #ifdef _WIN32 the last commit. According to David Shaw,
- * one of the gnupg developers, the changes are mingw32-specific.
- *
- * Revision 1.50 2007/06/10 14:59:59 fabiankeil
- * Change replacement timegm() to better match our style, plug a small
- * but guaranteed memory leak and fix "time zone breathing" on mingw32.
- *
- * Revision 1.49 2007/05/11 11:48:15 fabiankeil
- * - Delete strsav() which was replaced
- * by string_append() years ago.
- * - Add a strlcat() look-alike.
- * - Use strlcat() and strlcpy() in those parts
- * of the code that are run on unixes.
- *
- * Revision 1.48 2007/04/09 17:48:51 fabiankeil
- * Check for HAVE_SNPRINTF instead of __OS2__
- * before including the portable snprintf() code.
- *
- * Revision 1.47 2007/03/17 11:52:15 fabiankeil
- * - Use snprintf instead of sprintf.
- * - Mention copyright for the replacement
- * functions in the copyright header.
- *
- * Revision 1.46 2007/01/18 15:03:20 fabiankeil
- * Don't include replacement timegm() if
- * putenv() or tzset() isn't available.
- *
- * Revision 1.45 2006/12/26 17:31:41 fabiankeil
- * Mutex protect rand() if POSIX threading
- * is used, warn the user if that's not possible
- * and stop using it on _WIN32 where it could
- * cause crashes.
- *
- * Revision 1.44 2006/11/07 12:46:43 fabiankeil
- * Silence compiler warning on NetBSD 3.1.
- *
- * Revision 1.43 2006/09/23 13:26:38 roro
- * Replace TABs by spaces in source code.
- *
- * Revision 1.42 2006/09/09 14:01:45 fabiankeil
- * Integrated Oliver Yeoh's domain pattern fix
- * to make sure *x matches xx. Closes Patch 1217393
- * and Bug 1170767.
- *
- * Revision 1.41 2006/08/18 16:03:17 david__schmidt
- * Tweak for OS/2 build happiness.
- *
- * Revision 1.40 2006/08/17 17:15:10 fabiankeil
- * - Back to timegm() using GnuPG's replacement if necessary.
- * Using mktime() and localtime() could add a on hour offset if
- * the randomize factor was big enough to lead to a summer/wintertime
- * switch.
- *
- * - Removed now-useless Privoxy 3.0.3 compatibility glue.
- *
- * - Moved randomization code into pick_from_range().
- *
- * - Changed parse_header_time definition.
- * time_t isn't guaranteed to be signed and
- * if it isn't, -1 isn't available as error code.
- * Changed some variable types in client_if_modified_since()
- * because of the same reason.
- *
- * Revision 1.39 2006/07/18 14:48:46 david__schmidt
- * Reorganizing the repository: swapping out what was HEAD (the old 3.1 branch)
- * with what was really the latest development (the v_3_0_branch branch)
- *
- * Revision 1.37.2.4 2003/12/01 14:45:14 oes
- * Fixed two more problems with wildcarding in simplematch()
- *
- * Revision 1.37.2.3 2003/11/20 11:39:24 oes
- * Bugfix: The "?" wildcard for domain names had never been implemented. Ooops\!
- *
- * Revision 1.37.2.2 2002/11/12 14:28:18 oes
- * Proper backtracking in simplematch; fixes bug #632888
- *
- * Revision 1.37.2.1 2002/09/25 12:58:51 oes
- * Made strcmpic and strncmpic safe against NULL arguments
- * (which are now treated as empty strings).
- *
- * Revision 1.37 2002/04/26 18:29:43 jongfoster
- * Fixing this Visual C++ warning:
- * miscutil.c(710) : warning C4090: '=' : different 'const' qualifiers
- *
- * Revision 1.36 2002/04/26 12:55:38 oes
- * New function string_toupper
- *
- * Revision 1.35 2002/03/26 22:29:55 swa
- * we have a new homepage!
- *
- * Revision 1.34 2002/03/24 13:25:43 swa
- * name change related issues
- *
- * Revision 1.33 2002/03/07 03:46:53 oes
- * Fixed compiler warnings etc
- *
- * Revision 1.32 2002/03/06 23:02:57 jongfoster
- * Removing tabs
- *
- * Revision 1.31 2002/03/05 04:52:42 oes
- * Deleted non-errlog debugging code
- *
- * Revision 1.30 2002/03/04 18:27:42 oes
- * - Deleted deletePidFile
- * - Made write_pid_file use the --pidfile option value
- * (or no PID file, if the option was absent)
- * - Played styleguide police
- *
- * Revision 1.29 2002/03/04 02:08:02 david__schmidt
- * Enable web editing of actions file on OS/2 (it had been broken all this time!)
- *
- * Revision 1.28 2002/03/03 09:18:03 joergs
- * Made jumbjuster work on AmigaOS again.
- *
- * Revision 1.27 2002/01/21 00:52:32 jongfoster
- * Adding string_join()
- *
- * Revision 1.26 2001/12/30 14:07:32 steudten
- * - Add signal handling (unix)
- * - Add SIGHUP handler (unix)
- * - Add creation of pidfile (unix)
- * - Add action 'top' in rc file (RH)
- * - Add entry 'SIGNALS' to manpage
- * - Add exit message to logfile (unix)
- *
- * Revision 1.25 2001/11/13 00:16:38 jongfoster
- * Replacing references to malloc.h with the standard stdlib.h
- * (See ANSI or K&R 2nd Ed)
- *
- * Revision 1.24 2001/11/05 21:41:43 steudten
- * Add changes to be a real daemon just for unix os.
- * (change cwd to /, detach from controlling tty, set
- * process group and session leader to the own process.
- * Add DBG() Macro.
- * Add some fatal-error log message for failed malloc().
- * Add '-d' if compiled with 'configure --with-debug' to
- * enable debug output.
- *
- * Revision 1.23 2001/10/29 03:48:10 david__schmidt
- * OS/2 native needed a snprintf() routine. Added one to miscutil, brackedted
- * by and __OS2__ ifdef.
- *
- * Revision 1.22 2001/10/26 17:39:38 oes
- * Moved ijb_isspace and ijb_tolower to project.h
- *
- * Revision 1.21 2001/10/23 21:27:50 jongfoster
- * Standardising error codes in string_append
- * make_path() no longer adds '\\' if the dir already ends in '\\' (this
- * is just copying a UNIX-specific fix to the Windows-specific part)
- *
- * Revision 1.20 2001/10/22 15:33:56 david__schmidt
- * Special-cased OS/2 out of the Netscape-abort-on-404-in-js problem in
- * filters.c. Added a FIXME in front of the offending code. I'll gladly
- * put in a better/more robust fix for all parties if one is presented...
- * It seems that just returning 200 instead of 404 would pretty much fix
- * it for everyone, but I don't know all the history of the problem.
- *
- * Revision 1.19 2001/10/14 22:02:57 jongfoster
- * New function string_append() which is like strsav(), but running
- * out of memory isn't automatically FATAL.
- *
- * Revision 1.18 2001/09/20 13:33:43 steudten
- *
- * change long to int as return value in hash_string(). Remember the wraparound
- * for int = long = sizeof(4) - thats maybe not what we want.
- *
- * Revision 1.17 2001/09/13 20:51:29 jongfoster
- * Fixing potential problems with characters >=128 in simplematch()
- * This was also a compiler warning.
- *
- * Revision 1.16 2001/09/10 10:56:59 oes
- * Silenced compiler warnings
- *
- * Revision 1.15 2001/07/13 14:02:24 oes
- * Removed vim-settings
- *
- * Revision 1.14 2001/06/29 21:45:41 oes
- * Indentation, CRLF->LF, Tab-> Space
- *
- * Revision 1.13 2001/06/29 13:32:14 oes
- * Removed logentry from cancelled commit
- *
- * Revision 1.12 2001/06/09 10:55:28 jongfoster
- * Changing BUFSIZ ==> BUFFER_SIZE
- *
- * Revision 1.11 2001/06/07 23:09:19 jongfoster
- * Cosmetic indentation changes.
- *
- * Revision 1.10 2001/06/07 14:51:38 joergs
- * make_path() no longer adds '/' if the dir already ends in '/'.
- *
- * Revision 1.9 2001/06/07 14:43:17 swa
- * slight mistake in make_path, unix path style is /.
- *
- * Revision 1.8 2001/06/05 22:32:01 jongfoster
- * New function make_path() to splice directory and file names together.
- *
- * Revision 1.7 2001/06/03 19:12:30 oes
- * introduced bindup()
- *
- * Revision 1.6 2001/06/01 18:14:49 jongfoster
- * Changing the calls to strerr() to check HAVE_STRERR (which is defined
- * in config.h if appropriate) rather than the NO_STRERR macro.
- *
- * Revision 1.5 2001/06/01 10:31:51 oes
- * Added character class matching to trivimatch; renamed to simplematch
- *
- * Revision 1.4 2001/05/31 17:32:31 oes
- *
- * - Enhanced domain part globbing with infix and prefix asterisk
- * matching and optional unanchored operation
- *
- * Revision 1.3 2001/05/29 23:10:09 oes
- *
- *
- * - Introduced chomp()
- * - Moved strsav() from showargs to miscutil
- *
- * Revision 1.2 2001/05/29 09:50:24 jongfoster
- * Unified blocklist/imagelist/permissionslist.
- * File format is still under discussion, but the internal changes
- * are (mostly) done.
- *
- * Also modified interceptor behaviour:
- * - We now intercept all URLs beginning with one of the following
- * prefixes (and *only* these prefixes):
- * * http://i.j.b/
- * * http://ijbswa.sf.net/config/
- * * http://ijbswa.sourceforge.net/config/
- * - New interceptors "home page" - go to http://i.j.b/ to see it.
- * - Internal changes so that intercepted and fast redirect pages
- * are not replaced with an image.
- * - Interceptors now have the option to send a binary page direct
- * to the client. (i.e. ijb-send-banner uses this)
- * - Implemented show-url-info interceptor. (Which is why I needed
- * the above interceptors changes - a typical URL is
- * "http://i.j.b/show-url-info?url=www.somesite.com/banner.gif".
- * The previous mechanism would not have intercepted that, and
- * if it had been intercepted then it then it would have replaced
- * it with an image.)
- *
- * Revision 1.1.1.1 2001/05/15 13:59:00 oes
- * Initial import of version 2.9.3 source tree
- *
- *
*********************************************************************/
-\f
+
#include "config.h"
*********************************************************************/
int strncmpic(const char *s1, const char *s2, size_t n)
{
- if (n <= 0) return(0);
+ if (n <= (size_t)0) return(0);
if (!s1) s1 = "";
if (!s2) s2 = "";
break;
}
- if (--n <= 0) break;
+ if (--n <= (size_t)0) break;
s1++, s2++;
}
err = string_append(target_string, text_to_append);
- free(text_to_append);
+ freez(text_to_append);
return err;
}
}
-/*********************************************************************
- *
- * Function : simplematch
- *
- * Description : String matching, with a (greedy) '*' wildcard that
- * stands for zero or more arbitrary characters and
- * character classes in [], which take both enumerations
- * and ranges.
- *
- * Parameters :
- * 1 : pattern = pattern for matching
- * 2 : text = text to be matched
- *
- * Returns : 0 if match, else nonzero
- *
- *********************************************************************/
-int simplematch(char *pattern, char *text)
-{
- unsigned char *pat = (unsigned char *) pattern;
- unsigned char *txt = (unsigned char *) text;
- unsigned char *fallback = pat;
- int wildcard = 0;
-
- unsigned char lastchar = 'a';
- unsigned i;
- unsigned char charmap[32];
-
- while (*txt)
- {
-
- /* EOF pattern but !EOF text? */
- if (*pat == '\0')
- {
- if (wildcard)
- {
- pat = fallback;
- }
- else
- {
- return 1;
- }
- }
-
- /* '*' in the pattern? */
- if (*pat == '*')
- {
-
- /* The pattern ends afterwards? Speed up the return. */
- if (*++pat == '\0')
- {
- return 0;
- }
-
- /* Else, set wildcard mode and remember position after '*' */
- wildcard = 1;
- fallback = pat;
- }
-
- /* Character range specification? */
- if (*pat == '[')
- {
- memset(charmap, '\0', sizeof(charmap));
-
- while (*++pat != ']')
- {
- if (!*pat)
- {
- return 1;
- }
- else if (*pat == '-')
- {
- if ((*++pat == ']') || *pat == '\0')
- {
- return(1);
- }
- for(i = lastchar; i <= *pat; i++)
- {
- charmap[i / 8] |= (1 << (i % 8));
- }
- }
- else
- {
- charmap[*pat / 8] |= (1 << (*pat % 8));
- lastchar = *pat;
- }
- }
- } /* -END- if Character range specification */
-
-
- /*
- * Char match, or char range match?
- */
- if ( (*pat == *txt)
- || (*pat == '?')
- || ((*pat == ']') && (charmap[*txt / 8] & (1 << (*txt % 8)))) )
- {
- /*
- * Sucess: Go ahead
- */
- pat++;
- }
- else if (!wildcard)
- {
- /*
- * No match && no wildcard: No luck
- */
- return 1;
- }
- else if (pat != fallback)
- {
- /*
- * Increment text pointer if in char range matching
- */
- if (*pat == ']')
- {
- txt++;
- }
- /*
- * Wildcard mode && nonmatch beyond fallback: Rewind pattern
- */
- pat = fallback;
- /*
- * Restart matching from current text pointer
- */
- continue;
- }
- txt++;
- }
-
- /* Cut off extra '*'s */
- if(*pat == '*') pat++;
-
- /* If this is the pattern's end, fine! */
- return(*pat);
-
-}
-
-
/*********************************************************************
*
* Function : bindup
strlcpy(path, dir, path_size);
}
+ assert(NULL != path);
#if defined(_WIN32) || defined(__OS2__)
if(path[strlen(path)-1] != '\\')
{
long int pick_from_range(long int range)
{
long int number;
+#ifdef _WIN32
+ static unsigned long seed = 0;
+#endif /* def _WIN32 */
+
+ assert(range != 0);
+ assert(range > 0);
+
+ if (range <= 0) return 0;
+
#ifdef HAVE_RANDOM
number = random() % range + 1;
-#elif defined(FEATURE_PTHREAD)
- pthread_mutex_lock(&rand_mutex);
- number = rand() % (long int)(range + 1);
- pthread_mutex_unlock(&rand_mutex);
-#else
+#elif defined(MUTEX_LOCKS_AVAILABLE)
+ privoxy_mutex_lock(&rand_mutex);
#ifdef _WIN32
- /*
- * On Windows and mingw32 srand() has to be called in every
- * rand()-using thread, but can cause crashes if it's not
- * mutex protected.
- *
- * Currently we don't have mutexes for mingw32, and for
- * our purpose this cludge is probably preferable to crashes.
- */
- log_error(LOG_LEVEL_INFO, "No thread-safe PRNG available? Using weak \'randomization\' factor.");
- number = (range + GetCurrentThreadId() % range) / 2;
+ if (!seed)
+ {
+ seed = (unsigned long)(GetCurrentThreadId()+GetTickCount());
+ }
+ srand(seed);
+ seed = (unsigned long)((rand() << 16) + rand());
+#endif /* def _WIN32 */
+ number = (unsigned long)((rand() << 16) + (rand())) % (unsigned long)(range + 1);
+ privoxy_mutex_unlock(&rand_mutex);
#else
/*
* XXX: Which platforms reach this and are there
* better options than just using rand() and hoping
* that it's safe?
*/
- log_error(LOG_LEVEL_INFO, "No thread-safe PRNG available? Header time randomization might cause "
- "crashes, predictable results or even combine these fine options.");
+ log_error(LOG_LEVEL_INFO, "No thread-safe PRNG available? Header time randomization "
+ "might cause crashes, predictable results or even combine these fine options.");
number = rand() % (long int)(range + 1);
-#endif /* def _WIN32 */
#endif /* (def HAVE_RANDOM) */
- return (number);
+ return number;
+}
+
+
+#ifdef USE_PRIVOXY_STRLCPY
+/*********************************************************************
+ *
+ * Function : privoxy_strlcpy
+ *
+ * Description : strlcpy(3) look-alike for those without decent libc.
+ *
+ * Parameters :
+ * 1 : destination: buffer to copy into.
+ * 2 : source: String to copy.
+ * 3 : size: Size of destination buffer.
+ *
+ * Returns : The length of the string that privoxy_strlcpy() tried to create.
+ *
+ *********************************************************************/
+size_t privoxy_strlcpy(char *destination, const char *source, const size_t size)
+{
+ if (0 < size)
+ {
+ snprintf(destination, size, "%s", source);
+ /*
+ * Platforms that lack strlcpy() also tend to have
+ * a broken snprintf implementation that doesn't
+ * guarantee nul termination.
+ *
+ * XXX: the configure script should detect and reject those.
+ */
+ destination[size-1] = '\0';
+ }
+ return strlen(source);
}
+#endif /* def USE_PRIVOXY_STRLCPY */
#ifndef HAVE_STRLCAT
* 2 : source: String to copy.
* 3 : size: Size of destination buffer.
*
- * Returns : The length of the string that strlcat tried to create.
+ * Returns : The length of the string that privoxy_strlcat() tried to create.
*
*********************************************************************/
size_t privoxy_strlcat(char *destination, const char *source, const size_t size)
projects / privoxy.git / blobdiff