e3bd4545a2
info->msg is being assigned to 'error'. but there is no such variable. altho there is such a function in error.h fix this by assigning info->msg to 'err' instead, that is the variable passed to pcre_compile().
100 lines
2.1 KiB
C
100 lines
2.1 KiB
C
/* filter.c
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*
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* Copyright (C) 2011 Henrik Hautakoski <henrik@fiktivkod.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include <assert.h>
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#include <pcre.h>
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#include <stdio.h>
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#include <string.h>
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#include "error.h"
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#include "filter.h"
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struct __error_info {
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const char *msg;
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int offset;
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};
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static inline pcre* compile(const char *pattern, struct __error_info *info) {
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const char *err;
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int eoffset;
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pcre *regex;
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regex = pcre_compile(pattern, 0, &err, &eoffset, NULL);
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if (!regex) {
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if (info) {
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info->msg = err;
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info->offset = eoffset;
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}
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return NULL;
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}
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return regex;
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}
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static inline int match(pcre *pcre, const char *subject) {
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int ovector[1];
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return pcre_exec(pcre, NULL, subject, strlen(subject), 0, 0,
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ovector, sizeof(ovector));
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}
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int filter_check_syntax(const char *pattern) {
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struct __error_info info;
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if (!compile(pattern, &info)) {
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error("filter: error in expression '%s': %s\n",
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pattern, info.msg);
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return 0;
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}
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return 1;
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}
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int filter_match(const char *pattern, const char *subject) {
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pcre *regex;
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int rc;
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if (!pattern || !subject)
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return 0;
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regex = compile(pattern, NULL);
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if (!regex)
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return 0;
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rc = match(regex, subject);
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pcre_free(regex);
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return rc > 0;
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}
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int filter_match_list(char **patterns, unsigned n, const char *subject) {
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int i;
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for(i=0; i < n; i++) {
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/* return true at the first matching pattern */
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if (filter_match(patterns[i], subject))
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return 1;
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}
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return 0;
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}
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