X-Git-Url: http://www.privoxy.org/gitweb/?p=privoxy.git;a=blobdiff_plain;f=miscutil.c;h=ef27396c68bec47b1c37c93716abecf8500bf880;hp=c149a44a056929f53c00979eb0a96224fe0ec696;hb=f525ed5616406d0421acf7b62a16a4616243f67c;hpb=a5823f709d110f48f4bf6d973fda0e0455d1506b diff --git a/miscutil.c b/miscutil.c index c149a44a..ef27396c 100644 --- a/miscutil.c +++ b/miscutil.c @@ -1,5 +1,4 @@ -/* vim:ts=3: */ -const char miscutil_rcs[] = "$Id: miscutil.c,v 1.12 2001/06/09 10:55:28 jongfoster Exp $"; +const char miscutil_rcs[] = "$Id: miscutil.c,v 1.21 2001/10/23 21:27:50 jongfoster Exp $"; /********************************************************************* * * File : $Source: /cvsroot/ijbswa/current/miscutil.c,v $ @@ -37,6 +36,43 @@ const char miscutil_rcs[] = "$Id: miscutil.c,v 1.12 2001/06/09 10:55:28 jongfost * * Revisions : * $Log: miscutil.c,v $ + * 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 * @@ -110,27 +146,14 @@ const char miscutil_rcs[] = "$Id: miscutil.c,v 1.12 2001/06/09 10:55:28 jongfost #include #include #include +#include -/* - * FIXME: Only need project.h for BUFFER_SIZE. It would be nice - * to remove this dependency. - */ -#include "project.h" -#include "miscutil.h" +#include "project.h" +#include "miscutil.h" #include "errlog.h" const char miscutil_h_rcs[] = MISCUTIL_H_VERSION; -/* Fix a problem with Solaris. There should be no effect on other - * platforms. - * Solaris's isspace() is a macro which uses it's argument directly - * as an array index. Therefore we need to make sure that high-bit - * characters generate +ve values, and ideally we also want to make - * the argument match the declared parameter type of "int". - */ -#define ijb_tolower(__X) tolower((int)(unsigned char)(__X)) -#define ijb_isspace(__X) isspace((int)(unsigned char)(__X)) - /********************************************************************* * * Function : zalloc @@ -171,9 +194,9 @@ void *zalloc(int size) * Returns : an unsigned long variable with the hashed value. * *********************************************************************/ -unsigned long hash_string( const char* s ) +unsigned int hash_string( const char* s ) { - unsigned long h = 0ul; + unsigned int h = 0; for ( ; *s; ++s ) { @@ -367,17 +390,20 @@ char *chomp(char *string) } + /********************************************************************* * * Function : strsav * * Description : Reallocate "old" and append text to it. This makes * it easier to append to malloc'd strings. + * Running out of memory is a FATAL error. * * Parameters : * 1 : old = Old text that is to be extended. Will be - * free()d by this routine. + * free()d by this routine. May be NULL. * 2 : text_to_append = Text to be appended to old. + * May be NULL. * * Returns : Pointer to newly malloc'ed appended string. * If there is no text to append, return old. Caller @@ -386,7 +412,7 @@ char *chomp(char *string) *********************************************************************/ char *strsav(char *old, const char *text_to_append) { - int old_len, new_len; + int old_len, new_len = 0; char *p; if (( text_to_append == NULL) || (*text_to_append == '\0')) @@ -394,37 +420,111 @@ char *strsav(char *old, const char *text_to_append) return(old); } - if (NULL != old) + if (NULL == old) { - old_len = strlen(old); + if ((p = strdup(text_to_append)) == NULL) + { + log_error(LOG_LEVEL_FATAL, "strdup() failed!", new_len); + /* Never get here - LOG_LEVEL_FATAL causes program exit */ + } + return p; } - else + + old_len = strlen(old); + new_len = old_len + strlen(text_to_append) + 1; + + if ((p = realloc(old, new_len)) == NULL) { - old_len = 0; + log_error(LOG_LEVEL_FATAL, "realloc(%d) bytes failed!", new_len); + /* Never get here - LOG_LEVEL_FATAL causes program exit */ } - new_len = old_len + strlen(text_to_append) + 1; + strcpy(p + old_len, text_to_append); + return(p); +} + + +/********************************************************************* + * + * Function : string_append + * + * Description : Reallocate target_string and append text to it. + * This makes it easier to append to malloc'd strings. + * This is similar to strsav(), but running out of + * memory isn't catastrophic. + * + * Programming style: + * + * The following style provides sufficient error + * checking for this routine, with minimal clutter + * in the source code. It is recommended if you + * have many calls to this function: + * + * char * s = strdup(...); // don't check for error + * string_append(&s, ...); // don't check for error + * string_append(&s, ...); // don't check for error + * string_append(&s, ...); // don't check for error + * if (NULL == s) { ... handle error ... } + * + * OR, equivalently: + * + * char * s = strdup(...); // don't check for error + * string_append(&s, ...); // don't check for error + * string_append(&s, ...); // don't check for error + * if (string_append(&s, ...)) {... handle error ...} + * + * Parameters : + * 1 : target_string = Pointer to old text that is to be + * extended. *target_string will be free()d by this + * routine. target_string must be non-NULL. + * If *target_string is NULL, this routine will + * do nothing and return with an error - this allows + * you to make many calls to this routine and only + * check for errors after the last one. + * 2 : text_to_append = Text to be appended to old. + * Must not be NULL. + * + * Returns : JB_ERR_OK on success, and sets *target_string + * to newly malloc'ed appended string. Caller + * must free(*target_string). + * JB_ERR_MEMORY on out-of-memory. (And free()s + * *target_string and sets it to NULL). + * JB_ERR_MEMORY if *target_string is NULL. + * + *********************************************************************/ +jb_err string_append(char **target_string, const char *text_to_append) +{ + size_t old_len; + char *new_string; - if (old) + assert(target_string); + assert(text_to_append); + + if (*target_string == NULL) { - if ((p = realloc(old, new_len)) == NULL) - { - log_error(LOG_LEVEL_FATAL, "realloc(%d) bytes failed!", new_len); - /* Never get here - LOG_LEVEL_FATAL causes program exit */ - } + return JB_ERR_MEMORY; } - else + + if (*text_to_append == '\0') { - if ((p = (char *)malloc(new_len)) == NULL) - { - log_error(LOG_LEVEL_FATAL, "malloc(%d) bytes failed!", new_len); - /* Never get here - LOG_LEVEL_FATAL causes program exit */ - } + return JB_ERR_OK; } - strcpy(p + old_len, text_to_append); - return(p); + old_len = strlen(*target_string); + + if (NULL == (new_string = realloc(*target_string, + strlen(text_to_append) + old_len + 1))) + { + free(*target_string); + + *target_string = NULL; + return JB_ERR_MEMORY; + } + + strcpy(new_string + old_len, text_to_append); + *target_string = new_string; + return JB_ERR_OK; } @@ -446,12 +546,12 @@ char *strsav(char *old, const char *text_to_append) *********************************************************************/ int simplematch(char *pattern, char *text) { - char *fallback; - char *pat = pattern; - char *txt = text; + unsigned char *pat = (unsigned char *) pattern; + unsigned char *txt = (unsigned char *) text; + unsigned char *fallback = pat; int wildcard = 0; - char lastchar = 'a'; + unsigned char lastchar = 'a'; unsigned i; unsigned char charmap[32]; @@ -564,12 +664,12 @@ char *bindup(const char *string, int n) if (NULL == (dup = (char *)malloc(n))) { - return NULL; - } + return NULL; + } else - { - memcpy(dup, string, n); - } + { + memcpy(dup, string, n); + } return dup; @@ -636,9 +736,15 @@ char * make_path(const char * dir, const char * file) char * path = malloc(strlen(dir) + strlen(file) + 2); strcpy(path, dir); #ifdef _WIN32 - strcat(path, "\\"); + if(path[strlen(path)-1] != '\\') + { + strcat(path, "\\"); + } #else /* ifndef _WIN32 */ - if(path[strlen(path)-1] != '/') strcat(path, "/"); + if(path[strlen(path)-1] != '/') + { + strcat(path, "/"); + } #endif /* ifndef _WIN32 */ strcat(path, file);