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].u.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 char orig_apass[KEYLEN+1];
293 char orig_upass[KEYLEN+1];
294 unsigned int nn, argc;
297 cNode->topic[0] = '\0';
298 cNode->topic_nick[0] = '\0';
299 cNode->topic_time = 0;
301 /* remember the old modes, and update them with the new */
302 orig_modes = cNode->modes;
303 orig_limit = cNode->limit;
304 strcpy(orig_key, cNode->key);
305 strcpy(orig_upass, cNode->upass);
306 strcpy(orig_apass, cNode->apass);
308 mod_chanmode(NULL, cNode, modes, modec, 0);
309 cNode->timestamp = new_time;
311 /* remove our old ban list, replace it with the new one */
312 for (nn=0; nn<cNode->banlist.used; nn++)
313 free(cNode->banlist.list[nn]);
314 cNode->banlist.used = 0;
316 /* deop anybody in the channel now, but count services to reop */
317 for (nn=argc=0; nn<cNode->members.used; nn++) {
318 struct modeNode *mn = cNode->members.list[nn];
319 if ((mn->modes & MODE_CHANOP) && IsService(mn->user) && IsLocal(mn->user))
323 struct mod_chanmode *change;
325 change = mod_chanmode_alloc(argc);
326 change->modes_clear = 0;
327 change->modes_set = orig_modes;
328 change->new_limit = orig_limit;
329 strcpy(change->new_key, orig_key);
330 strcpy(change->new_upass, orig_upass);
331 strcpy(change->new_apass, orig_apass);
332 for (nn = argc = 0; nn < cNode->members.used; ++nn) {
333 struct modeNode *mn = cNode->members.list[nn];
334 if ((mn->modes & MODE_CHANOP) && IsService(mn->user) && IsLocal(mn->user)) {
335 change->args[argc].mode = MODE_CHANOP;
336 change->args[argc].u.member = mn;
340 assert(argc == change->argc);
341 change->args[0].u.member->modes &= ~MODE_CHANOP;
342 mod_chanmode_announce(change->args[0].u.member->user, cNode, change);
343 mod_chanmode_free(change);
348 AddChannel(const char *name, time_t time_, const char *modes, char *banlist)
350 struct chanNode *cNode;
351 char new_modes[MAXLEN], *argv[MAXNUMPARAMS];
354 if (!IsChannelName(name)) {
355 log_module(MAIN_LOG, LOG_ERROR, "Somebody asked to add channel '%s', which isn't a channel name!", name);
361 safestrncpy(new_modes, modes, sizeof(new_modes));
362 nn = split_line(new_modes, 0, ArrayLength(argv), argv);
363 if (!(cNode = GetChannel(name))) {
364 cNode = calloc(1, sizeof(*cNode) + strlen(name));
365 strcpy(cNode->name, name);
366 banList_init(&cNode->banlist);
367 modeList_init(&cNode->members);
368 mod_chanmode(NULL, cNode, argv, nn, MCP_FROM_SERVER);
369 dict_insert(channels, cNode->name, cNode);
370 cNode->timestamp = time_;
372 } else if (cNode->timestamp > time_) {
373 wipeout_channel(cNode, time_, argv, nn);
375 } else if (cNode->timestamp == time_) {
376 mod_chanmode(NULL, cNode, argv, nn, MCP_FROM_SERVER);
382 /* rel_age is the relative ages of our channel data versus what is
383 * in a BURST command. 1 means ours is younger, 0 means both are
384 * the same age, -1 means ours is older. */
386 /* if it's a new or updated channel, make callbacks */
388 for (nn=0; nn<ncf_used; nn++)
391 /* go through list of bans and add each one */
392 if (banlist && (rel_age >= 0)) {
393 for (nn=0; banlist[nn];) {
394 char *ban = banlist + nn;
396 while (banlist[nn] != ' ' && banlist[nn])
398 while (banlist[nn] == ' ')
400 bn = calloc(1, sizeof(*bn));
401 safestrncpy(bn->ban, ban, sizeof(bn->ban));
402 safestrncpy(bn->who, "<unknown>", sizeof(bn->who));
404 banList_append(&cNode->banlist, bn);
411 static del_channel_func_t *dcf_list;
412 static unsigned int dcf_size = 0, dcf_used = 0;
415 reg_del_channel_func(del_channel_func_t handler)
417 if (dcf_used == dcf_size) {
420 dcf_list = realloc(dcf_list, dcf_size*sizeof(dcf_list[0]));
423 dcf_list = malloc(dcf_size*sizeof(dcf_list[0]));
426 dcf_list[dcf_used++] = handler;
430 DelChannel(struct chanNode *channel)
435 dict_remove(channels, channel->name);
437 if (channel->members.used || channel->locks) {
438 log_module(MAIN_LOG, LOG_ERROR, "Warning: deleting channel %s with %d users and %d locks remaining.", channel->name, channel->members.used, channel->locks);
441 /* go through all channel members and delete them from the channel */
442 for (n=channel->members.used; n>0; )
443 DelChannelUser(channel->members.list[--n]->user, channel, NULL, 1);
445 /* delete all channel bans */
446 for (n=channel->banlist.used; n>0; )
447 free(channel->banlist.list[--n]);
448 channel->banlist.used = 0;
450 for (n=0; n<dcf_used; n++)
451 dcf_list[n](channel);
453 modeList_clean(&channel->members);
454 banList_clean(&channel->banlist);
459 AddChannelUser(struct userNode *user, struct chanNode* channel)
461 struct modeNode *mNode;
464 mNode = GetUserMode(channel, user);
468 mNode = malloc(sizeof(*mNode));
470 /* set up modeNode */
471 mNode->channel = channel;
475 mNode->idle_since = now;
477 /* Add modeNode to channel and to user.
478 * We have to do this before calling join funcs in case the
479 * modeNode is manipulated (e.g. chanserv ops the user).
481 modeList_append(&channel->members, mNode);
482 modeList_append(&user->channels, mNode);
484 if (channel->members.used == 1
485 && !(channel->modes & MODE_REGISTERED)
486 && !(channel->modes & MODE_APASS))
487 mNode->modes |= MODE_CHANOP;
489 for (n=0; n<jf_used; n++) {
490 /* Callbacks return true if they kick or kill the user,
491 * and we can continue without removing mNode. */
492 if (jf_list[n](mNode))
497 irc_join(user, channel);
502 static part_func_t *pf_list;
503 static unsigned int pf_size = 0, pf_used = 0;
506 reg_part_func(part_func_t handler)
508 if (pf_used == pf_size) {
511 pf_list = realloc(pf_list, pf_size*sizeof(part_func_t));
514 pf_list = malloc(pf_size*sizeof(part_func_t));
517 pf_list[pf_used++] = handler;
521 unreg_part_func(part_func_t handler)
524 for (i=0; i<pf_used; i++)
525 if (pf_list[i] == handler)
529 memmove(pf_list+i, pf_list+i+1, (pf_used-i-1)*sizeof(pf_list[0]));
534 LockChannel(struct chanNode* channel)
540 UnlockChannel(struct chanNode *channel)
542 assert(channel->locks > 0);
543 if (!--channel->locks && !channel->members.used)
548 DelChannelUser(struct userNode* user, struct chanNode* channel, const char *reason, int deleting)
550 struct modeNode* mNode;
553 if (IsLocal(user) && reason)
554 irc_part(user, channel, reason);
556 mNode = GetUserMode(channel, user);
558 /* Sometimes we get a PART when the user has been KICKed.
559 * In this case, we get no usermode, and should not try to free it.
564 /* remove modeNode from channel and user */
565 modeList_remove(&channel->members, mNode);
566 modeList_remove(&user->channels, mNode);
569 for (n=0; n<pf_used; n++)
570 pf_list[n](mNode, reason);
575 /* A single check for APASS only should be enough here */
576 if (!deleting && !channel->members.used && !channel->locks
577 && !(channel->modes & MODE_REGISTERED) && !(channel->modes & MODE_APASS))
582 KickChannelUser(struct userNode* target, struct chanNode* channel, struct userNode *kicker, const char *why)
584 if (!target || !channel || IsService(target) || !GetUserMode(channel, target))
586 /* don't remove them from the channel, since the server will send a PART */
587 irc_kick(kicker, target, channel, why);
591 /* NULL reason because we don't want a PART message to be
592 sent by DelChannelUser. */
593 DelChannelUser(target, channel, NULL, 0);
597 static kick_func_t *kf_list;
598 static unsigned int kf_size = 0, kf_used = 0;
601 reg_kick_func(kick_func_t handler)
603 if (kf_used == kf_size) {
606 kf_list = realloc(kf_list, kf_size*sizeof(kick_func_t));
609 kf_list = malloc(kf_size*sizeof(kick_func_t));
612 kf_list[kf_used++] = handler;
616 ChannelUserKicked(struct userNode* kicker, struct userNode* victim, struct chanNode* channel)
621 if (!victim || !channel || IsService(victim) || !GetUserMode(channel, victim))
624 /* Update the kicker's idle time (kicker may be null if it was a server) */
625 if (kicker && (mn = GetUserMode(channel, kicker)))
626 mn->idle_since = now;
628 for (n=0; n<kf_used; n++)
629 kf_list[n](kicker, victim, channel);
631 DelChannelUser(victim, channel, 0, 0);
634 irc_part(victim, channel, NULL);
637 int ChannelBanExists(struct chanNode *channel, const char *ban)
641 for (n = 0; n < channel->banlist.used; n++)
642 if (match_ircglobs(channel->banlist.list[n]->ban, ban))
647 static topic_func_t *tf_list;
648 static unsigned int tf_size = 0, tf_used = 0;
651 reg_topic_func(topic_func_t handler)
653 if (tf_used == tf_size) {
656 tf_list = realloc(tf_list, tf_size*sizeof(topic_func_t));
659 tf_list = malloc(tf_size*sizeof(topic_func_t));
662 tf_list[tf_used++] = handler;
666 SetChannelTopic(struct chanNode *channel, struct userNode *user, const char *topic, int announce)
670 char old_topic[TOPICLEN+1];
672 safestrncpy(old_topic, channel->topic, sizeof(old_topic));
673 safestrncpy(channel->topic, topic, sizeof(channel->topic));
674 channel->topic_time = now;
677 safestrncpy(channel->topic_nick, user->nick, sizeof(channel->topic_nick));
679 /* Update the setter's idle time */
680 if ((mn = GetUserMode(channel, user)))
681 mn->idle_since = now;
685 /* We don't really care if a local user messes with the topic,
686 * so don't call the tf_list functions. */
687 irc_topic(user, channel, topic);
689 for (n=0; n<tf_used; n++)
690 if (tf_list[n](user, channel, old_topic))
696 GetChannel(const char *name)
698 return dict_find(channels, name, NULL);
702 GetUserMode(struct chanNode *channel, struct userNode *user)
705 struct modeNode *mn = NULL;
708 verify(channel->members.list);
710 verify(user->channels.list);
711 if (channel->members.used < user->channels.used) {
712 for (n=0; n<channel->members.used; n++) {
713 verify(channel->members.list[n]);
714 if (user == channel->members.list[n]->user) {
715 mn = channel->members.list[n];
720 for (n=0; n<user->channels.used; n++) {
721 verify(user->channels.list[n]);
722 if (channel == user->channels.list[n]->channel) {
723 mn = user->channels.list[n];
731 DEFINE_LIST(userList, struct userNode*)
732 DEFINE_LIST(modeList, struct modeNode*)
733 DEFINE_LIST(banList, struct banNode*)
734 DEFINE_LIST(channelList, struct chanNode*)
735 DEFINE_LIST(serverList, struct server*)
740 dict_iterator_t it, next;
742 DelServer(self, 0, NULL);
743 for (it = dict_first(channels); it; it = next) {
744 next = iter_next(it);
745 DelChannel(iter_data(it));
747 dict_delete(channels);
748 dict_delete(clients);
749 dict_delete(servers);
750 userList_clean(&curr_opers);