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133 lines
3.4 KiB
133 lines
3.4 KiB
/*
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* Copyright (c) 2011 and 2012, Dustin Lundquist <dustin@null-ptr.net>
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* Copyright (c) 2011 Manuel Kasper <mk@neon1.net>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdio.h>
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#include <string.h>
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#include "rule.h"
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#include "utils.h"
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static void free_rule(rule_t *);
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rule_t *
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new_rule()
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{
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rule_t *rule;
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rule = calloc(1, sizeof(rule_t));
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if (rule == NULL) {
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ERROR("malloc");
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return NULL;
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}
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return rule;
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}
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int
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accept_rule_arg(rule_t *rule, const char *arg)
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{
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if (rule->pattern == NULL) {
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rule->pattern = strdup(arg);
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if (rule->pattern == NULL) {
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ERROR("strdup failed");
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return -1;
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}
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} else {
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LOGE("Unexpected table rule argument: %s", arg);
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return -1;
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}
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return 1;
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}
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void
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add_rule(struct cork_dllist *rules, rule_t *rule)
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{
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cork_dllist_add(rules, &rule->entries);
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}
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int
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init_rule(rule_t *rule)
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{
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if (rule->pattern_re == NULL) {
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const char *reerr;
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int reerroffset;
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rule->pattern_re =
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pcre_compile(rule->pattern, 0, &reerr, &reerroffset, NULL);
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if (rule->pattern_re == NULL) {
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LOGE("Regex compilation of \"%s\" failed: %s, offset %d",
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rule->pattern, reerr, reerroffset);
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return 0;
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}
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}
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return 1;
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}
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rule_t *
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lookup_rule(const struct cork_dllist *rules, const char *name, size_t name_len)
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{
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struct cork_dllist_item *curr, *next;
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if (name == NULL) {
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name = "";
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name_len = 0;
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}
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cork_dllist_foreach_void(rules, curr, next) {
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rule_t *rule = cork_container_of(curr, rule_t, entries);
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if (pcre_exec(rule->pattern_re, NULL,
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name, name_len, 0, 0, NULL, 0) >= 0)
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return rule;
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}
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return NULL;
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}
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void
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remove_rule(rule_t *rule)
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{
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cork_dllist_remove(&rule->entries);
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free_rule(rule);
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}
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static void
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free_rule(rule_t *rule)
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{
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if (rule == NULL)
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return;
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ss_free(rule->pattern);
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if (rule->pattern_re != NULL)
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pcre_free(rule->pattern_re);
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ss_free(rule);
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}
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