1 /******************************************************************************/
2 /* pfixtools: a collection of postfix related tools */
4 /* ________________________________________________________________________ */
6 /* Redistribution and use in source and binary forms, with or without */
7 /* modification, are permitted provided that the following conditions */
10 /* 1. Redistributions of source code must retain the above copyright */
11 /* notice, this list of conditions and the following disclaimer. */
12 /* 2. Redistributions in binary form must reproduce the above copyright */
13 /* notice, this list of conditions and the following disclaimer in the */
14 /* documentation and/or other materials provided with the distribution. */
15 /* 3. The names of its contributors may not be used to endorse or promote */
16 /* products derived from this software without specific prior written */
19 /* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND */
20 /* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE */
21 /* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR */
22 /* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS */
23 /* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR */
24 /* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF */
25 /* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS */
26 /* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN */
27 /* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) */
28 /* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF */
29 /* THE POSSIBILITY OF SUCH DAMAGE. */
30 /******************************************************************************/
33 * Copyright © 2008 Florent Bruneau
40 static filter_runner_t runners[FTK_count];
41 static filter_constructor_t constructors[FTK_count];
42 static filter_destructor_t destructors[FTK_count];
44 void filter_register(const char *type, filter_constructor_t constructor,
45 filter_destructor_t destructor, filter_runner_t runner)
47 filter_token tok = filter_tokenize(type, m_strlen(type));
48 assert(tok != FTK_UNKNOWN && "Unknown filter type");
50 syslog(LOG_INFO, "filter type %s registered", type);
52 runners[tok] = runner;
53 constructors[tok] = constructor;
54 destructors[tok] = destructor;
57 bool filter_build(filter_t *filter)
60 if (filter->type == FTK_UNKNOWN || filter->name == NULL) {
63 if (filter->hooks.len > 0) {
64 # define QSORT_TYPE filter_hook_t
65 # define QSORT_BASE filter->hooks.data
66 # define QSORT_NELT filter->hooks.len
67 # define QSORT_LT(a,b) strcmp(a->name, b->name) < 0
70 filter_constructor_t constructor = constructors[filter->type];
72 ret = constructor(filter);
74 array_deep_wipe(filter->params, filter_params_wipe);
78 bool filter_update_references(filter_t *filter, A(filter_t) *filter_list)
80 foreach (filter_hook_t *hook, filter->hooks) {
82 hook->filter_id = filter_find_with_name(filter_list, hook->value);
83 if (hook->filter_id == -1) {
84 syslog(LOG_ERR, "invalid filter name %s for hook %s",
85 hook->value, hook->name);
88 p_delete(&hook->value);
94 void filter_wipe(filter_t *filter)
96 filter_destructor_t destructor = destructors[filter->type];
100 array_deep_wipe(filter->hooks, filter_hook_wipe);
101 array_deep_wipe(filter->params, filter_params_wipe);
102 p_delete(&filter->name);
105 filter_result_t filter_run(const filter_t *filter, const query_t *query)
107 return runners[filter->type](filter, query);
110 void filter_set_name(filter_t *filter, const char *name, ssize_t len)
112 filter->name = p_new(char, len + 1);
113 memcpy(filter->name, name, len);
114 filter->name[len] = '\0';
117 bool filter_set_type(filter_t *filter, const char *type, ssize_t len)
119 filter->type = filter_tokenize(type, len);
120 return filter->type != FTK_UNKNOWN;
123 bool filter_add_param(filter_t *filter, const char *name, ssize_t name_len,
124 const char *value, ssize_t value_len)
126 filter_params_t param;
127 param.name = m_strdup(name);
128 param.value = m_strdup(value);
129 array_add(filter->params, param);
133 bool filter_add_hook(filter_t *filter, const char *name, ssize_t name_len,
134 const char *value, ssize_t value_len)
137 hook.name = m_strdup(name);
138 hook.postfix = (strncmp(value, "postfix:", 8) == 0);
139 hook.value = m_strdup(hook.postfix ? value + 8 : value);
141 array_add(filter->hooks, hook);