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https://github.com/irssi/irssi.git
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Have a ignore_find_full method that is the one that all the new code should be using and provide some working stubs for ignore_find and ignore_find_noact.
507 lines
13 KiB
C
507 lines
13 KiB
C
/*
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ignore.c : irssi
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Copyright (C) 1999-2000 Timo Sirainen
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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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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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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "module.h"
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#include "signals.h"
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#include "misc.h"
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#include "levels.h"
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#include "lib-config/iconfig.h"
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#include "settings.h"
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#include "masks.h"
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#include "servers.h"
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#include "channels.h"
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#include "nicklist.h"
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#include "nickmatch-cache.h"
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#include "ignore.h"
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GSList *ignores;
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static NICKMATCH_REC *nickmatch;
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static int time_tag;
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/* check if `text' contains ignored nick at the start of the line. */
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static int ignore_check_replies_rec(IGNORE_REC *rec, CHANNEL_REC *channel,
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const char *text)
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{
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GSList *nicks, *tmp;
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nicks = nicklist_find_multiple(channel, rec->mask);
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if (nicks == NULL) return FALSE;
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for (tmp = nicks; tmp != NULL; tmp = tmp->next) {
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NICK_REC *nick = tmp->data;
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if (nick_match_msg(channel, text, nick->nick))
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return TRUE;
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}
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g_slist_free(nicks);
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return FALSE;
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}
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static int ignore_match_pattern(IGNORE_REC *rec, const char *text)
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{
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if (rec->pattern == NULL)
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return TRUE;
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if (text == NULL)
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return FALSE;
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if (rec->regexp) {
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#ifdef HAVE_REGEX_H
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return rec->regexp_compiled &&
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regexec(&rec->preg, text, 0, NULL, 0) == 0;
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#else
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return FALSE;
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#endif
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}
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return rec->fullword ?
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stristr_full(text, rec->pattern) != NULL :
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stristr(text, rec->pattern) != NULL;
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}
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/* MSGLEVEL_NO_ACT is special in ignores, when provided to ignore_check() it's
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* used as a flag to indicate it should only look at ignore items with NO_ACT.
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* However we also want to allow NO_ACT combined with levels, so mask it out and
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* match levels if set. */
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#define ignore_match_level(rec, level) \
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(((level & MSGLEVEL_NO_ACT) != 0) ? \
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((~MSGLEVEL_NO_ACT & level) & (rec)->level) != 0 : \
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((rec)->level & MSGLEVEL_NO_ACT ? 0 : \
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(level & (rec)->level) != 0))
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#define ignore_match_nickmask(rec, nick, nickmask) \
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((rec)->mask == NULL || \
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(strchr((rec)->mask, '!') != NULL ? \
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match_wildcards((rec)->mask, nickmask) : \
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match_wildcards((rec)->mask, nick)))
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#define ignore_match_server(rec, server) \
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((rec)->servertag == NULL || ((server) != NULL && \
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g_ascii_strcasecmp((server)->tag, (rec)->servertag) == 0))
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#define ignore_match_channel(rec, channel) \
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((rec)->channels == NULL || ((channel) != NULL && \
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strarray_find((rec)->channels, (channel)) != -1))
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static int ignore_check_replies(CHANNEL_REC *chanrec, const char *text, int level)
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{
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GSList *tmp;
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if (text == NULL || chanrec == NULL)
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return FALSE;
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/* check reply ignores */
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for (tmp = ignores; tmp != NULL; tmp = tmp->next) {
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IGNORE_REC *rec = tmp->data;
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if (rec->mask != NULL && rec->replies &&
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ignore_match_level(rec, level) &&
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ignore_match_channel(rec, chanrec->name) &&
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ignore_check_replies_rec(rec, chanrec, text))
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return TRUE;
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}
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return FALSE;
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}
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int ignore_check(SERVER_REC *server, const char *nick, const char *host,
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const char *channel, const char *text, int level)
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{
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CHANNEL_REC *chanrec;
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NICK_REC *nickrec;
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IGNORE_REC *rec;
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GSList *tmp;
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char *nickmask;
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int len, best_mask, best_match, best_patt;
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if (nick == NULL) nick = "";
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chanrec = server == NULL || channel == NULL ? NULL :
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channel_find(server, channel);
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if (chanrec != NULL && nick != NULL &&
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(nickrec = nicklist_find(chanrec, nick)) != NULL) {
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/* nick found - check only ignores in nickmatch cache */
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if (nickrec->host == NULL)
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nicklist_set_host(chanrec, nickrec, host);
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tmp = nickmatch_find(nickmatch, nickrec);
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nickmask = NULL;
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} else {
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tmp = ignores;
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nickmask = g_strconcat(nick, "!", host, NULL);
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}
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best_mask = best_patt = -1; best_match = FALSE;
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for (; tmp != NULL; tmp = tmp->next) {
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int match = 1;
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rec = tmp->data;
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if (nickmask != NULL)
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match = ignore_match_server(rec, server) &&
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ignore_match_channel(rec, channel) &&
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ignore_match_nickmask(rec, nick, nickmask);
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if (match &&
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ignore_match_level(rec, level) &&
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ignore_match_pattern(rec, text)) {
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len = rec->mask == NULL ? 0 : strlen(rec->mask);
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if (len > best_mask) {
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best_mask = len;
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best_match = !rec->exception;
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} else if (len == best_mask) {
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len = rec->pattern == NULL ? 0 : strlen(rec->pattern);
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if (len > best_patt) {
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best_patt = len;
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best_match = !rec->exception;
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} else if (len == best_patt && rec->exception)
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best_match = 0;
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}
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}
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}
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g_free(nickmask);
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if (best_match || (level & MSGLEVEL_PUBLIC) == 0)
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return best_match;
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return ignore_check_replies(chanrec, text, level);
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}
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IGNORE_REC *ignore_find_full(const char *servertag, const char *mask, const char *pattern,
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char **channels, const int flags)
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{
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GSList *tmp;
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char **chan;
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int ignore_servertag;
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if (mask != NULL && (*mask == '\0' || g_strcmp0(mask, "*") == 0))
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mask = NULL;
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ignore_servertag = servertag != NULL && g_strcmp0(servertag, "*") == 0;
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for (tmp = ignores; tmp != NULL; tmp = tmp->next) {
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IGNORE_REC *rec = tmp->data;
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if (!ignore_servertag) {
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if ((servertag == NULL && rec->servertag != NULL) ||
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(servertag != NULL && rec->servertag == NULL))
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continue;
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if (servertag != NULL && g_ascii_strcasecmp(servertag, rec->servertag) != 0)
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continue;
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}
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if ((flags & IGNORE_FIND_NOACT) && (rec->level & MSGLEVEL_NO_ACT) == 0)
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continue;
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if (!(flags & IGNORE_FIND_NOACT) && (rec->level & MSGLEVEL_NO_ACT) != 0)
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continue;
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if ((rec->mask == NULL && mask != NULL) ||
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(rec->mask != NULL && mask == NULL))
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continue;
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if (rec->mask != NULL && g_ascii_strcasecmp(rec->mask, mask) != 0)
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continue;
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/* match the pattern too if requested */
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if (flags & IGNORE_FIND_PATTERN) {
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if ((rec->pattern == NULL && pattern != NULL) ||
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(rec->pattern != NULL && pattern == NULL))
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continue;
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if (rec->pattern != NULL && g_ascii_strcasecmp(rec->pattern, pattern) != 0)
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continue;
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}
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if ((channels == NULL && rec->channels == NULL))
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return rec; /* no channels - ok */
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if (channels != NULL && g_strcmp0(*channels, "*") == 0)
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return rec; /* ignore channels */
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if (channels == NULL || rec->channels == NULL)
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continue; /* other doesn't have channels */
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if (strarray_length(channels) != strarray_length(rec->channels))
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continue; /* different amount of channels */
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/* check that channels match */
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for (chan = channels; *chan != NULL; chan++) {
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if (strarray_find(rec->channels, *chan) == -1)
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break;
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}
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if (*chan == NULL)
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return rec; /* channels ok */
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}
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return NULL;
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}
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IGNORE_REC *ignore_find(const char *servertag, const char *mask, char **channels)
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{
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return ignore_find_full(servertag, mask, NULL, channels, 0);
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}
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IGNORE_REC *ignore_find_noact(const char *servertag, const char *mask, char **channels, int noact)
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{
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return ignore_find_full(servertag, mask, NULL, channels, IGNORE_FIND_NOACT);
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}
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static void ignore_set_config(IGNORE_REC *rec)
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{
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CONFIG_NODE *node;
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char *levelstr;
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if (rec->level == 0)
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return;
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node = iconfig_node_traverse("(ignores", TRUE);
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node = iconfig_node_section(node, NULL, NODE_TYPE_BLOCK);
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if (rec->mask != NULL) iconfig_node_set_str(node, "mask", rec->mask);
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if (rec->level) {
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levelstr = bits2level(rec->level);
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iconfig_node_set_str(node, "level", levelstr);
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g_free(levelstr);
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}
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iconfig_node_set_str(node, "pattern", rec->pattern);
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if (rec->exception) iconfig_node_set_bool(node, "exception", TRUE);
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if (rec->regexp) iconfig_node_set_bool(node, "regexp", TRUE);
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if (rec->fullword) iconfig_node_set_bool(node, "fullword", TRUE);
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if (rec->replies) iconfig_node_set_bool(node, "replies", TRUE);
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if (rec->unignore_time != 0)
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iconfig_node_set_int(node, "unignore_time", rec->unignore_time);
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iconfig_node_set_str(node, "servertag", rec->servertag);
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if (rec->channels != NULL && *rec->channels != NULL) {
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node = iconfig_node_section(node, "channels", NODE_TYPE_LIST);
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iconfig_node_add_list(node, rec->channels);
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}
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}
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static int ignore_index(IGNORE_REC *find)
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{
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GSList *tmp;
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int index;
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index = 0;
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for (tmp = ignores; tmp != NULL; tmp = tmp->next) {
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IGNORE_REC *rec = tmp->data;
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if (rec == find)
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return index;
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index++;
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}
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return -1;
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}
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static void ignore_remove_config(IGNORE_REC *rec)
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{
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CONFIG_NODE *node;
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node = iconfig_node_traverse("ignores", FALSE);
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if (node != NULL) iconfig_node_list_remove(node, ignore_index(rec));
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}
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static void ignore_init_rec(IGNORE_REC *rec)
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{
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#ifdef HAVE_REGEX_H
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char *errbuf;
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int errcode, errbuf_len;
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if (rec->regexp_compiled) regfree(&rec->preg);
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rec->regexp_compiled = FALSE;
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if (rec->regexp && rec->pattern != NULL) {
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errcode = regcomp(&rec->preg, rec->pattern,
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REG_EXTENDED|REG_ICASE|REG_NOSUB);
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if (errcode != 0) {
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errbuf_len = regerror(errcode, &rec->preg, 0, 0);
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errbuf = g_malloc(errbuf_len);
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regerror(errcode, &rec->preg, errbuf, errbuf_len);
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g_warning("Failed to compile regexp '%s': %s", rec->pattern, errbuf);
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g_free(errbuf);
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} else {
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rec->regexp_compiled = TRUE;
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}
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}
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#endif
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}
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void ignore_add_rec(IGNORE_REC *rec)
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{
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ignore_init_rec(rec);
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ignores = g_slist_append(ignores, rec);
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ignore_set_config(rec);
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signal_emit("ignore created", 1, rec);
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nickmatch_rebuild(nickmatch);
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}
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static void ignore_destroy(IGNORE_REC *rec, int send_signal)
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{
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ignores = g_slist_remove(ignores, rec);
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if (send_signal)
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signal_emit("ignore destroyed", 1, rec);
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#ifdef HAVE_REGEX_H
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if (rec->regexp_compiled) regfree(&rec->preg);
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#endif
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if (rec->channels != NULL) g_strfreev(rec->channels);
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g_free_not_null(rec->mask);
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g_free_not_null(rec->servertag);
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g_free_not_null(rec->pattern);
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g_free(rec);
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}
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void ignore_update_rec(IGNORE_REC *rec)
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{
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if (rec->level == 0) {
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/* unignored everything */
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ignore_remove_config(rec);
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ignore_destroy(rec, TRUE);
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} else {
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/* unignore just some levels.. */
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ignore_remove_config(rec);
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ignores = g_slist_remove(ignores, rec);
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ignores = g_slist_append(ignores, rec);
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ignore_set_config(rec);
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ignore_init_rec(rec);
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signal_emit("ignore changed", 1, rec);
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}
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nickmatch_rebuild(nickmatch);
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}
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static int unignore_timeout(void)
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{
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GSList *tmp, *next;
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time_t now;
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now = time(NULL);
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for (tmp = ignores; tmp != NULL; tmp = next) {
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IGNORE_REC *rec = tmp->data;
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next = tmp->next;
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if (rec->unignore_time > 0 && now >= rec->unignore_time) {
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rec->level = 0;
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ignore_update_rec(rec);
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}
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}
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return TRUE;
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}
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static void read_ignores(void)
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{
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IGNORE_REC *rec;
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CONFIG_NODE *node;
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GSList *tmp;
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while (ignores != NULL)
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ignore_destroy(ignores->data, FALSE);
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node = iconfig_node_traverse("ignores", FALSE);
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if (node == NULL) {
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nickmatch_rebuild(nickmatch);
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return;
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}
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tmp = config_node_first(node->value);
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for (; tmp != NULL; tmp = config_node_next(tmp)) {
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node = tmp->data;
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if (node->type != NODE_TYPE_BLOCK)
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continue;
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rec = g_new0(IGNORE_REC, 1);
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ignores = g_slist_append(ignores, rec);
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rec->mask = g_strdup(config_node_get_str(node, "mask", NULL));
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rec->pattern = g_strdup(config_node_get_str(node, "pattern", NULL));
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rec->level = level2bits(config_node_get_str(node, "level", ""), NULL);
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rec->exception = config_node_get_bool(node, "exception", FALSE);
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rec->regexp = config_node_get_bool(node, "regexp", FALSE);
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rec->fullword = config_node_get_bool(node, "fullword", FALSE);
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rec->replies = config_node_get_bool(node, "replies", FALSE);
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rec->unignore_time = config_node_get_int(node, "unignore_time", 0);
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rec->servertag = g_strdup(config_node_get_str(node, "servertag", 0));
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node = iconfig_node_section(node, "channels", -1);
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if (node != NULL) rec->channels = config_node_get_list(node);
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ignore_init_rec(rec);
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}
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nickmatch_rebuild(nickmatch);
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}
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static void ignore_nick_cache(GHashTable *list, CHANNEL_REC *channel,
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NICK_REC *nick)
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{
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GSList *tmp, *matches;
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char *nickmask;
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if (nick->host == NULL)
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return; /* don't check until host is known */
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matches = NULL;
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nickmask = g_strconcat(nick->nick, "!", nick->host, NULL);
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for (tmp = ignores; tmp != NULL; tmp = tmp->next) {
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IGNORE_REC *rec = tmp->data;
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if (ignore_match_nickmask(rec, nick->nick, nickmask) &&
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ignore_match_server(rec, channel->server) &&
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ignore_match_channel(rec, channel->name))
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matches = g_slist_append(matches, rec);
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}
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g_free_not_null(nickmask);
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if (matches == NULL)
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g_hash_table_remove(list, nick);
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else
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g_hash_table_insert(list, nick, matches);
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}
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void ignore_init(void)
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{
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ignores = NULL;
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nickmatch = nickmatch_init(ignore_nick_cache);
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time_tag = g_timeout_add(1000, (GSourceFunc) unignore_timeout, NULL);
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read_ignores();
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signal_add("setup reread", (SIGNAL_FUNC) read_ignores);
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}
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void ignore_deinit(void)
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{
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g_source_remove(time_tag);
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while (ignores != NULL)
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ignore_destroy(ignores->data, TRUE);
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nickmatch_deinit(nickmatch);
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signal_remove("setup reread", (SIGNAL_FUNC) read_ignores);
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}
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