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irssi/src/core/ignore.c

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/*
ignore.c : irssi
Copyright (C) 1999-2000 Timo Sirainen
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "module.h"
#include "signals.h"
#include "misc.h"
#include "levels.h"
#include "lib-config/iconfig.h"
#include "settings.h"
#include "masks.h"
#include "servers.h"
#include "channels.h"
#include "nicklist.h"
#include "nickmatch-cache.h"
#include "ignore.h"
GSList *ignores;
static NICKMATCH_REC *nickmatch;
static int time_tag;
/* check if `text' contains ignored nick at the start of the line. */
static int ignore_check_replies_rec(IGNORE_REC *rec, CHANNEL_REC *channel,
const char *text)
{
GSList *nicks, *tmp;
nicks = nicklist_find_multiple(channel, rec->mask);
if (nicks == NULL) return FALSE;
for (tmp = nicks; tmp != NULL; tmp = tmp->next) {
NICK_REC *nick = tmp->data;
if (nick_match_msg(channel, text, nick->nick))
return TRUE;
}
g_slist_free(nicks);
return FALSE;
}
static int ignore_check_replies(CHANNEL_REC *chanrec, const char *text)
{
GSList *tmp;
if (text == NULL || chanrec == NULL)
return FALSE;
/* check reply ignores */
for (tmp = ignores; tmp != NULL; tmp = tmp->next) {
IGNORE_REC *rec = tmp->data;
if (rec->mask != NULL && rec->replies &&
ignore_check_replies_rec(rec, chanrec, text))
return TRUE;
}
return FALSE;
}
static int ignore_match_pattern(IGNORE_REC *rec, const char *text)
{
if (rec->pattern == NULL)
return TRUE;
if (text == NULL)
return FALSE;
if (rec->regexp) {
#ifdef HAVE_REGEX_H
return rec->regexp_compiled &&
regexec(&rec->preg, text, 0, NULL, 0) == 0;
#else
return FALSE;
#endif
}
return rec->fullword ?
stristr_full(text, rec->pattern) != NULL :
stristr(text, rec->pattern) != NULL;
}
#define ignore_match_level(rec, level) \
((level & (rec)->level) != 0)
#define ignore_match_nickmask(rec, nick, nickmask) \
((rec)->mask == NULL || \
(strchr((rec)->mask, '!') != NULL ? \
match_wildcards((rec)->mask, nickmask) : \
match_wildcards((rec)->mask, nick)))
#define ignore_match_server(rec, server) \
((rec)->servertag == NULL || \
g_strcasecmp((server)->tag, (rec)->servertag) == 0)
#define ignore_match_channel(rec, channel) \
((rec)->channels == NULL || ((channel) != NULL && \
strarray_find((rec)->channels, (channel)) != -1))
static int ignore_check_without_mask(GSList *list, CHANNEL_REC *channel,
int level, const char *text)
{
GSList *tmp;
int len, best_mask, best_match, best_patt;
best_mask = best_patt = -1; best_match = FALSE;
for (tmp = list; tmp != NULL; tmp = tmp->next) {
IGNORE_REC *rec = tmp->data;
if (ignore_match_level(rec, level) &&
ignore_match_pattern(rec, text)) {
len = rec->mask == NULL ? 0 : strlen(rec->mask);
if (len > best_mask) {
best_mask = len;
best_match = !rec->exception;
} else if (len == best_mask && rec->pattern != NULL) {
len = strlen(rec->pattern);
if (len > best_patt) {
best_patt = len;
best_match = !rec->exception;
}
}
}
}
if (best_match || (level & MSGLEVEL_PUBLIC) == 0)
return best_match;
return ignore_check_replies(channel, text);
}
int ignore_check(SERVER_REC *server, const char *nick, const char *host,
const char *channel, const char *text, int level)
{
CHANNEL_REC *chanrec;
NICK_REC *nickrec;
IGNORE_REC *rec;
GSList *tmp, *list;
char *nickmask;
int len, best_mask, best_match, best_patt;
g_return_val_if_fail(server != NULL, 0);
if (nick == NULL) nick = "";
chanrec = server == NULL || channel == NULL ? NULL :
channel_find(server, channel);
if (chanrec != NULL && nick != NULL &&
(nickrec = nicklist_find(chanrec, nick)) != NULL) {
/* nick found - check only ignores in nickmatch cache */
if (nickrec->host == NULL)
nicklist_set_host(chanrec, nickrec, host);
list = nickmatch_find(nickmatch, nickrec);
return ignore_check_without_mask(list, chanrec, level, text);
}
nickmask = g_strconcat(nick, "!", host, NULL);
best_mask = best_patt = -1; best_match = FALSE;
for (tmp = ignores; tmp != NULL; tmp = tmp->next) {
rec = tmp->data;
if (ignore_match_level(rec, level) &&
ignore_match_server(rec, server) &&
ignore_match_channel(rec, channel) &&
ignore_match_nickmask(rec, nick, nickmask) &&
ignore_match_pattern(rec, text)) {
len = rec->mask == NULL ? 0 : strlen(rec->mask);
if (len > best_mask) {
best_mask = len;
best_match = !rec->exception;
} else if (len == best_mask && rec->pattern != NULL) {
len = strlen(rec->pattern);
if (len > best_patt) {
best_patt = len;
best_match = !rec->exception;
}
}
}
}
g_free(nickmask);
if (best_match || (level & MSGLEVEL_PUBLIC) == 0)
return best_match;
return ignore_check_replies(chanrec, text);
}
IGNORE_REC *ignore_find(const char *servertag, const char *mask,
char **channels)
{
GSList *tmp;
char **chan;
int ignore_servertag;
if (mask != NULL && (*mask == '\0' || strcmp(mask, "*") == 0))
mask = NULL;
ignore_servertag = servertag != NULL && strcmp(servertag, "*") == 0;
for (tmp = ignores; tmp != NULL; tmp = tmp->next) {
IGNORE_REC *rec = tmp->data;
if (!ignore_servertag) {
if ((servertag == NULL && rec->servertag != NULL) ||
(servertag != NULL && rec->servertag == NULL))
continue;
if (servertag != NULL && g_strcasecmp(servertag, rec->servertag) != 0)
continue;
}
if ((rec->mask == NULL && mask != NULL) ||
(rec->mask != NULL && mask == NULL)) continue;
if (rec->mask != NULL && g_strcasecmp(rec->mask, mask) != 0)
continue;
if ((channels == NULL && rec->channels == NULL))
return rec; /* no channels - ok */
if (channels != NULL && strcmp(*channels, "*") == 0)
return rec; /* ignore channels */
if (channels == NULL || rec->channels == NULL)
continue; /* other doesn't have channels */
if (strarray_length(channels) != strarray_length(rec->channels))
continue; /* different amount of channels */
/* check that channels match */
for (chan = channels; *chan != NULL; chan++) {
if (strarray_find(rec->channels, *chan) == -1)
break;
}
if (*chan == NULL)
return rec; /* channels ok */
}
return NULL;
}
static void ignore_set_config(IGNORE_REC *rec)
{
CONFIG_NODE *node;
char *levelstr;
if (rec->level == 0 || rec->unignore_time > 0)
return;
node = iconfig_node_traverse("(ignores", TRUE);
node = config_node_section(node, NULL, NODE_TYPE_BLOCK);
if (rec->mask != NULL) iconfig_node_set_str(node, "mask", rec->mask);
if (rec->level) {
levelstr = bits2level(rec->level);
iconfig_node_set_str(node, "level", levelstr);
g_free(levelstr);
}
iconfig_node_set_str(node, "pattern", rec->pattern);
if (rec->exception) iconfig_node_set_bool(node, "exception", TRUE);
if (rec->regexp) iconfig_node_set_bool(node, "regexp", TRUE);
if (rec->fullword) iconfig_node_set_bool(node, "fullword", TRUE);
if (rec->replies) iconfig_node_set_bool(node, "replies", TRUE);
if (rec->channels != NULL && *rec->channels != NULL) {
node = config_node_section(node, "channels", NODE_TYPE_LIST);
iconfig_node_add_list(node, rec->channels);
}
}
static int ignore_index(IGNORE_REC *find)
{
GSList *tmp;
int index;
index = 0;
for (tmp = ignores; tmp != NULL; tmp = tmp->next) {
IGNORE_REC *rec = tmp->data;
if (rec->servertag != NULL)
continue;
if (rec == find)
return index;
index++;
}
return -1;
}
static void ignore_remove_config(IGNORE_REC *rec)
{
CONFIG_NODE *node;
node = iconfig_node_traverse("ignores", FALSE);
if (node != NULL) iconfig_node_list_remove(node, ignore_index(rec));
}
static void ignore_init_rec(IGNORE_REC *rec)
{
#ifdef HAVE_REGEX_H
rec->regexp_compiled = !rec->regexp || rec->pattern == NULL ? FALSE :
regcomp(&rec->preg, rec->pattern,
REG_EXTENDED|REG_ICASE|REG_NOSUB) == 0;
#endif
}
void ignore_add_rec(IGNORE_REC *rec)
{
ignore_init_rec(rec);
ignores = g_slist_append(ignores, rec);
ignore_set_config(rec);
signal_emit("ignore created", 1, rec);
nickmatch_rebuild(nickmatch);
}
static void ignore_destroy(IGNORE_REC *rec, int send_signal)
{
ignores = g_slist_remove(ignores, rec);
if (send_signal)
signal_emit("ignore destroyed", 1, rec);
#ifdef HAVE_REGEX_H
if (rec->regexp_compiled) regfree(&rec->preg);
#endif
if (rec->channels != NULL) g_strfreev(rec->channels);
g_free_not_null(rec->mask);
g_free_not_null(rec->servertag);
g_free_not_null(rec->pattern);
g_free(rec);
nickmatch_rebuild(nickmatch);
}
void ignore_update_rec(IGNORE_REC *rec)
{
if (rec->level == 0) {
/* unignored everything */
ignore_remove_config(rec);
ignore_destroy(rec, TRUE);
} else {
/* unignore just some levels.. */
ignore_remove_config(rec);
ignores = g_slist_remove(ignores, rec);
ignores = g_slist_append(ignores, rec);
ignore_set_config(rec);
signal_emit("ignore changed", 1, rec);
nickmatch_rebuild(nickmatch);
}
}
static int unignore_timeout(void)
{
GSList *tmp, *next;
time_t now;
now = time(NULL);
for (tmp = ignores; tmp != NULL; tmp = next) {
IGNORE_REC *rec = tmp->data;
next = tmp->next;
if (rec->unignore_time > 0 && now >= rec->unignore_time) {
rec->level = 0;
ignore_update_rec(rec);
}
}
return TRUE;
}
static void read_ignores(void)
{
IGNORE_REC *rec;
CONFIG_NODE *node;
GSList *tmp;
while (ignores != NULL)
ignore_destroy(ignores->data, FALSE);
node = iconfig_node_traverse("ignores", FALSE);
if (node == NULL) {
nickmatch_rebuild(nickmatch);
return;
}
tmp = config_node_first(node->value);
for (; tmp != NULL; tmp = config_node_next(tmp)) {
node = tmp->data;
if (node->type != NODE_TYPE_BLOCK)
continue;
rec = g_new0(IGNORE_REC, 1);
ignores = g_slist_append(ignores, rec);
rec->mask = g_strdup(config_node_get_str(node, "mask", NULL));
rec->pattern = g_strdup(config_node_get_str(node, "pattern", NULL));
rec->level = level2bits(config_node_get_str(node, "level", ""));
rec->exception = config_node_get_bool(node, "exception", FALSE);
rec->regexp = config_node_get_bool(node, "regexp", FALSE);
rec->fullword = config_node_get_bool(node, "fullword", FALSE);
rec->replies = config_node_get_bool(node, "replies", FALSE);
node = config_node_section(node, "channels", -1);
if (node != NULL) rec->channels = config_node_get_list(node);
ignore_init_rec(rec);
}
nickmatch_rebuild(nickmatch);
}
static void ignore_nick_cache(GHashTable *list, CHANNEL_REC *channel,
NICK_REC *nick)
{
GSList *tmp, *matches;
char *nickmask;
if (nick->host == NULL)
return; /* don't check until host is known */
matches = NULL;
nickmask = g_strconcat(nick->nick, "!", nick->host, NULL);
for (tmp = ignores; tmp != NULL; tmp = tmp->next) {
IGNORE_REC *rec = tmp->data;
if (ignore_match_nickmask(rec, nick->nick, nickmask) &&
ignore_match_server(rec, channel->server) &&
ignore_match_channel(rec, channel->name))
matches = g_slist_append(matches, rec);
}
g_free_not_null(nickmask);
if (matches == NULL)
g_hash_table_remove(list, nick);
else
g_hash_table_insert(list, nick, matches);
}
void ignore_init(void)
{
ignores = NULL;
nickmatch = nickmatch_init(ignore_nick_cache);
time_tag = g_timeout_add(1000, (GSourceFunc) unignore_timeout, NULL);
read_ignores();
signal_add("setup reread", (SIGNAL_FUNC) read_ignores);
}
void ignore_deinit(void)
{
g_source_remove(time_tag);
while (ignores != NULL)
ignore_destroy(ignores->data, TRUE);
nickmatch_deinit(nickmatch);
signal_remove("setup reread", (SIGNAL_FUNC) read_ignores);
}