1 /* hash.c - IRC network state database
2 * Copyright 2000-2004 srvx Development Team
4 * This file is part of srvx.
6 * srvx is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with srvx; if not, write to the Free Software Foundation,
18 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
30 unsigned int max_clients, invis_clients;
31 time_t max_clients_time;
32 struct userList curr_opers;
34 static void hash_cleanup(void);
36 void init_structs(void)
38 channels = dict_new();
41 userList_init(&curr_opers);
42 reg_exit_func(hash_cleanup);
45 server_link_func_t *slf_list;
46 unsigned int slf_size = 0, slf_used = 0;
49 reg_server_link_func(server_link_func_t handler)
51 if (slf_used == slf_size) {
54 slf_list = realloc(slf_list, slf_size*sizeof(server_link_func_t));
57 slf_list = malloc(slf_size*sizeof(server_link_func_t));
60 slf_list[slf_used++] = handler;
64 GetServerH(const char *name)
66 return dict_find(servers, name, NULL);
69 new_user_func_t *nuf_list;
70 unsigned int nuf_size = 0, nuf_used = 0;
73 reg_new_user_func(new_user_func_t handler)
75 if (nuf_used == nuf_size) {
78 nuf_list = realloc(nuf_list, nuf_size*sizeof(new_user_func_t));
81 nuf_list = malloc(nuf_size*sizeof(new_user_func_t));
84 nuf_list[nuf_used++] = handler;
87 static nick_change_func_t *ncf2_list;
88 static unsigned int ncf2_size = 0, ncf2_used = 0;
91 reg_nick_change_func(nick_change_func_t handler)
93 if (ncf2_used == ncf2_size) {
96 ncf2_list = realloc(ncf2_list, ncf2_size*sizeof(nick_change_func_t));
99 ncf2_list = malloc(ncf2_size*sizeof(nick_change_func_t));
102 ncf2_list[ncf2_used++] = handler;
106 del_user_func_t *duf_list;
107 unsigned int duf_size = 0, duf_used = 0;
110 reg_del_user_func(del_user_func_t handler)
112 if (duf_used == duf_size) {
115 duf_list = realloc(duf_list, duf_size*sizeof(del_user_func_t));
118 duf_list = malloc(duf_size*sizeof(del_user_func_t));
121 duf_list[duf_used++] = handler;
125 unreg_del_user_func(del_user_func_t handler)
128 for (i=0; i<duf_used; i++) {
129 if (duf_list[i] == handler) break;
131 if (i == duf_used) return;
132 memmove(duf_list+i, duf_list+i+1, (duf_used-i-1)*sizeof(duf_list[0]));
136 /* reintroduces a user after it has been killed. */
138 ReintroduceUser(struct userNode *user)
140 struct mod_chanmode change;
144 mod_chanmode_init(&change);
146 for (n = 0; n < user->channels.used; n++) {
147 struct modeNode *mn = user->channels.list[n];
148 irc_join(user, mn->channel);
150 change.args[0].mode = mn->modes;
151 change.args[0].member = mn;
152 mod_chanmode_announce(user, mn->channel, &change);
158 NickChange(struct userNode* user, const char *new_nick, int no_announce)
163 /* don't do anything if there's no change */
164 old_nick = user->nick;
165 if (!strncmp(new_nick, old_nick, NICKLEN))
168 /* remove old entry from clients dictionary */
169 dict_remove(clients, old_nick);
170 #if !defined(WITH_PROTOCOL_P10)
171 /* Remove from uplink's clients dict */
172 dict_remove(user->uplink->users, old_nick);
175 user->nick = strdup(new_nick);
176 dict_insert(clients, user->nick, user);
177 #if !defined(WITH_PROTOCOL_P10)
178 dict_insert(user->uplink->users, user->nick, user);
181 /* Make callbacks for nick changes. Do this with new nick in
182 * place because that is slightly more useful.
184 for (nn=0; nn<ncf2_used; nn++)
185 ncf2_list[nn](user, old_nick);
186 user->timestamp = now;
187 if (IsLocal(user) && !no_announce)
188 irc_nick(user, old_nick);
193 GetUserH(const char *nick)
195 return dict_find(clients, nick, NULL);
198 static account_func_t account_func;
201 reg_account_func(account_func_t handler)
204 log_module(MAIN_LOG, LOG_WARNING, "Reregistering ACCOUNT handler.");
206 account_func = handler;
210 call_account_func(struct userNode *user, const char *stamp)
212 /* We've received an account stamp for a user; notify
213 NickServ, which registers the sole account_func
216 P10 Protocol violation if (user->modes & FLAGS_STAMPED) here.
219 account_func(user, stamp);
221 #ifdef WITH_PROTOCOL_P10
222 /* Mark the user so we don't stamp it again. */
223 user->modes |= FLAGS_STAMPED;
228 StampUser(struct userNode *user, const char *stamp)
230 #ifdef WITH_PROTOCOL_P10
231 /* The P10 protocol says we can't stamp users who already
237 irc_account(user, stamp);
238 user->modes |= FLAGS_STAMPED;
242 assign_fakehost(struct userNode *user, const char *host, int announce)
244 safestrncpy(user->fakehost, host, sizeof(user->fakehost));
246 irc_fakehost(user, host);
249 static new_channel_func_t *ncf_list;
250 static unsigned int ncf_size = 0, ncf_used = 0;
253 reg_new_channel_func(new_channel_func_t handler)
255 if (ncf_used == ncf_size) {
258 ncf_list = realloc(ncf_list, ncf_size*sizeof(ncf_list[0]));
261 ncf_list = malloc(ncf_size*sizeof(ncf_list[0]));
264 ncf_list[ncf_used++] = handler;
267 static join_func_t *jf_list;
268 static unsigned int jf_size = 0, jf_used = 0;
271 reg_join_func(join_func_t handler)
273 if (jf_used == jf_size) {
276 jf_list = realloc(jf_list, jf_size*sizeof(join_func_t));
279 jf_list = malloc(jf_size*sizeof(join_func_t));
282 jf_list[jf_used++] = handler;
288 wipeout_channel(struct chanNode *cNode, time_t new_time, char **modes, unsigned int modec) {
289 unsigned int orig_limit;
290 chan_mode_t orig_modes;
291 char orig_key[KEYLEN+1];
292 unsigned int nn, argc;
295 cNode->topic[0] = '\0';
296 cNode->topic_nick[0] = '\0';
297 cNode->topic_time = 0;
299 /* remember the old modes, and update them with the new */
300 orig_modes = cNode->modes;
301 orig_limit = cNode->limit;
302 strcpy(orig_key, cNode->key);
304 mod_chanmode(NULL, cNode, modes, modec, 0);
305 cNode->timestamp = new_time;
307 /* remove our old ban list, replace it with the new one */
308 for (nn=0; nn<cNode->banlist.used; nn++)
309 free(cNode->banlist.list[nn]);
310 cNode->banlist.used = 0;
312 /* deop anybody in the channel now, but count services to reop */
313 for (nn=argc=0; nn<cNode->members.used; nn++) {
314 struct modeNode *mn = cNode->members.list[nn];
315 if ((mn->modes & MODE_CHANOP) && IsService(mn->user) && IsLocal(mn->user))
319 struct mod_chanmode *change;
321 change = mod_chanmode_alloc(argc);
322 change->modes_clear = 0;
323 change->modes_set = orig_modes;
324 change->new_limit = orig_limit;
325 strcpy(change->new_key, orig_key);
326 for (nn = argc = 0; nn < cNode->members.used; ++nn) {
327 struct modeNode *mn = cNode->members.list[nn];
328 if ((mn->modes & MODE_CHANOP) && IsService(mn->user) && IsLocal(mn->user)) {
329 change->args[argc].mode = MODE_CHANOP;
330 change->args[argc].member = mn;
334 assert(argc == change->argc);
335 change->args[0].member->modes &= ~MODE_CHANOP;
336 mod_chanmode_announce(change->args[0].member->user, cNode, change);
337 mod_chanmode_free(change);
342 AddChannel(const char *name, time_t time_, const char *modes, char *banlist)
344 struct chanNode *cNode;
345 char new_modes[MAXLEN], *argv[MAXNUMPARAMS];
348 if (!IsChannelName(name)) {
349 log_module(MAIN_LOG, LOG_ERROR, "Somebody asked to add channel '%s', which isn't a channel name!", name);
355 safestrncpy(new_modes, modes, sizeof(new_modes));
356 nn = split_line(new_modes, 0, ArrayLength(argv), argv);
357 if (!(cNode = GetChannel(name))) {
358 cNode = calloc(1, sizeof(*cNode) + strlen(name));
359 strcpy(cNode->name, name);
360 banList_init(&cNode->banlist);
361 modeList_init(&cNode->members);
362 mod_chanmode(NULL, cNode, argv, nn, 0);
363 dict_insert(channels, cNode->name, cNode);
364 cNode->timestamp = time_;
366 } else if (cNode->timestamp > time_) {
367 wipeout_channel(cNode, time_, argv, nn);
369 } else if (cNode->timestamp == time_) {
370 mod_chanmode(NULL, cNode, argv, nn, 0);
376 /* rel_age is the relative ages of our channel data versus what is
377 * in a BURST command. 1 means ours is younger, 0 means both are
378 * the same age, -1 means ours is older. */
380 /* if it's a new or updated channel, make callbacks */
382 for (nn=0; nn<ncf_used; nn++)
385 /* go through list of bans and add each one */
386 if (banlist && (rel_age >= 0)) {
387 for (nn=0; banlist[nn];) {
388 char *ban = banlist + nn;
390 while (banlist[nn] != ' ' && banlist[nn])
392 while (banlist[nn] == ' ')
394 bn = calloc(1, sizeof(*bn));
395 safestrncpy(bn->ban, ban, sizeof(bn->ban));
396 safestrncpy(bn->who, "<unknown>", sizeof(bn->who));
398 banList_append(&cNode->banlist, bn);
405 static del_channel_func_t *dcf_list;
406 static unsigned int dcf_size = 0, dcf_used = 0;
409 reg_del_channel_func(del_channel_func_t handler)
411 if (dcf_used == dcf_size) {
414 dcf_list = realloc(dcf_list, dcf_size*sizeof(dcf_list[0]));
417 dcf_list = malloc(dcf_size*sizeof(dcf_list[0]));
420 dcf_list[dcf_used++] = handler;
424 DelChannel(struct chanNode *channel)
428 dict_remove(channels, channel->name);
430 if (channel->members.used || channel->locks) {
431 log_module(MAIN_LOG, LOG_ERROR, "Warning: deleting channel %s with %d users and %d locks remaining.", channel->name, channel->members.used, channel->locks);
434 /* go through all channel members and delete them from the channel */
435 for (n=channel->members.used; n>0; )
436 DelChannelUser(channel->members.list[--n]->user, channel, false, 1);
438 /* delete all channel bans */
439 for (n=channel->banlist.used; n>0; )
440 free(channel->banlist.list[--n]);
441 channel->banlist.used = 0;
443 for (n=0; n<dcf_used; n++)
444 dcf_list[n](channel);
446 modeList_clean(&channel->members);
447 banList_clean(&channel->banlist);
452 AddChannelUser(struct userNode *user, struct chanNode* channel)
454 struct modeNode *mNode;
457 mNode = GetUserMode(channel, user);
461 mNode = malloc(sizeof(*mNode));
463 /* set up modeNode */
464 mNode->channel = channel;
467 mNode->idle_since = now;
469 /* Add modeNode to channel and to user.
470 * We have to do this before calling join funcs in case the
471 * modeNode is manipulated (e.g. chanserv ops the user).
473 modeList_append(&channel->members, mNode);
474 modeList_append(&user->channels, mNode);
476 if (channel->members.used == 1)
477 mNode->modes |= MODE_CHANOP;
479 for (n=0; n<jf_used; n++) {
480 /* Callbacks return true if they kick or kill the user,
481 * and we can continue without removing mNode. */
482 if (jf_list[n](mNode))
487 irc_join(user, channel);
492 static part_func_t *pf_list;
493 static unsigned int pf_size = 0, pf_used = 0;
496 reg_part_func(part_func_t handler)
498 if (pf_used == pf_size) {
501 pf_list = realloc(pf_list, pf_size*sizeof(part_func_t));
504 pf_list = malloc(pf_size*sizeof(part_func_t));
507 pf_list[pf_used++] = handler;
511 unreg_part_func(part_func_t handler)
514 for (i=0; i<pf_used; i++)
515 if (pf_list[i] == handler)
519 memmove(pf_list+i, pf_list+i+1, (pf_used-i-1)*sizeof(pf_list[0]));
524 LockChannel(struct chanNode* channel)
530 UnlockChannel(struct chanNode *channel)
532 assert(channel->locks > 0);
533 if (!--channel->locks && !channel->members.used)
538 DelChannelUser(struct userNode* user, struct chanNode* channel, const char *reason, int deleting)
540 struct modeNode* mNode;
544 irc_part(user, channel, reason);
546 mNode = GetUserMode(channel, user);
548 /* Sometimes we get a PART when the user has been KICKed.
549 * In this case, we get no usermode, and should not try to free it.
554 /* remove modeNode from channel and user */
555 modeList_remove(&channel->members, mNode);
556 modeList_remove(&user->channels, mNode);
559 for (n=0; n<pf_used; n++)
560 pf_list[n](mNode, reason);
565 if (!deleting && !channel->members.used && !channel->locks && !(channel->modes & MODE_REGISTERED))
570 KickChannelUser(struct userNode* target, struct chanNode* channel, struct userNode *kicker, const char *why)
572 if (!target || !channel || IsService(target) || !GetUserMode(channel, target))
574 /* don't remove them from the channel, since the server will send a PART */
575 irc_kick(kicker, target, channel, why);
579 /* NULL reason because we don't want a PART message to be
580 sent by DelChannelUser. */
581 DelChannelUser(target, channel, NULL, 0);
585 static kick_func_t *kf_list;
586 static unsigned int kf_size = 0, kf_used = 0;
589 reg_kick_func(kick_func_t handler)
591 if (kf_used == kf_size) {
594 kf_list = realloc(kf_list, kf_size*sizeof(kick_func_t));
597 kf_list = malloc(kf_size*sizeof(kick_func_t));
600 kf_list[kf_used++] = handler;
604 ChannelUserKicked(struct userNode* kicker, struct userNode* victim, struct chanNode* channel)
609 if (!victim || !channel || IsService(victim) || !GetUserMode(channel, victim))
612 /* Update the kicker's idle time (kicker may be null if it was a server) */
613 if (kicker && (mn = GetUserMode(channel, kicker)))
614 mn->idle_since = now;
616 for (n=0; n<kf_used; n++)
617 kf_list[n](kicker, victim, channel);
619 DelChannelUser(victim, channel, 0, 0);
622 irc_part(victim, channel, NULL);
625 int ChannelBanExists(struct chanNode *channel, const char *ban)
629 for (n = 0; n < channel->banlist.used; n++)
630 if (match_ircglobs(channel->banlist.list[n]->ban, ban))
635 static topic_func_t *tf_list;
636 static unsigned int tf_size = 0, tf_used = 0;
639 reg_topic_func(topic_func_t handler)
641 if (tf_used == tf_size) {
644 tf_list = realloc(tf_list, tf_size*sizeof(topic_func_t));
647 tf_list = malloc(tf_size*sizeof(topic_func_t));
650 tf_list[tf_used++] = handler;
654 SetChannelTopic(struct chanNode *channel, struct userNode *user, const char *topic, int announce)
658 char old_topic[TOPICLEN+1];
660 safestrncpy(old_topic, channel->topic, sizeof(old_topic));
661 safestrncpy(channel->topic, topic, sizeof(channel->topic));
662 channel->topic_time = now;
665 safestrncpy(channel->topic_nick, user->nick, sizeof(channel->topic_nick));
667 /* Update the setter's idle time */
668 if ((mn = GetUserMode(channel, user)))
669 mn->idle_since = now;
673 /* We don't really care if a local user messes with the topic,
674 * so don't call the tf_list functions. */
675 irc_topic(user, channel, topic);
677 for (n=0; n<tf_used; n++)
678 if (tf_list[n](user, channel, old_topic))
684 GetChannel(const char *name)
686 return dict_find(channels, name, NULL);
690 GetUserMode(struct chanNode *channel, struct userNode *user)
693 struct modeNode *mn = NULL;
694 if (channel->members.used < user->channels.used) {
695 for (n=0; n<channel->members.used; n++) {
696 if (user == channel->members.list[n]->user) {
697 mn = channel->members.list[n];
702 for (n=0; n<user->channels.used; n++) {
703 if (channel == user->channels.list[n]->channel) {
704 mn = user->channels.list[n];
712 DEFINE_LIST(userList, struct userNode*)
713 DEFINE_LIST(modeList, struct modeNode*)
714 DEFINE_LIST(banList, struct banNode*)
715 DEFINE_LIST(channelList, struct chanNode*)
716 DEFINE_LIST(serverList, struct server*)
721 dict_iterator_t it, next;
723 DelServer(self, 0, NULL);
724 for (it = dict_first(channels); it; it = next) {
725 next = iter_next(it);
726 DelChannel(iter_data(it));
728 dict_delete(channels);
729 dict_delete(clients);
730 dict_delete(servers);
731 userList_clean(&curr_opers);