1 /* Copyright (C) 2009-2013, Martin Johansson <martin@fatbob.nu>
2 Copyright (C) 2005-2013, Thorvald Natvig <thorvald@natvig.com>
6 Redistribution and use in source and binary forms, with or without
7 modification, are permitted provided that the following conditions
10 - Redistributions of source code must retain the above copyright notice,
11 this list of conditions and the following disclaimer.
12 - Redistributions in binary form must reproduce the above copyright notice,
13 this list of conditions and the following disclaimer in the documentation
14 and/or other materials provided with the distribution.
15 - Neither the name of the Developers nor the names of its contributors may
16 be used to endorse or promote products derived from this software without
17 specific prior written permission.
19 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
23 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
26 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
27 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
41 static channel_t *rootChan;
42 channel_t *defaultChan;
43 declare_list(channels); /* A flat list of the channels */
45 static channel_t *createChannel(int id, const char *name, const char *desc)
49 ch = malloc(sizeof(channel_t));
51 Log_fatal("out of memory");
52 memset(ch, 0, sizeof(channel_t));
54 ch->name = strdup(name);
56 ch->desc = strdup(desc);
57 init_list_entry(&ch->subs);
58 init_list_entry(&ch->node);
59 init_list_entry(&ch->clients);
60 init_list_entry(&ch->flatlist_node);
61 init_list_entry(&ch->channel_links);
65 static int findFreeId()
68 channel_t *ch_itr = NULL;
69 for (id = 0; id < INT_MAX; id++) {
71 while ((ch_itr = Chan_iterate(&ch_itr)) != NULL) {
75 if (ch_itr == NULL) /* Found free id */
82 /* Might be used when tree traversal becomes neccessary */
83 static channel_t *first_subchannel(channel_t *ch)
85 if (list_empty(&ch->subs))
88 return list_get_entry(list_get_first(&ch->subs), channel_t, node);
91 static channel_t *next_channel(channel_t *ch)
93 if (list_get_next(&ch->node) == &list_get_entry(&ch->node, channel_t, node)->parent->subs)
96 return list_get_entry(list_get_next(&ch->node), channel_t, node);
100 channel_t *Chan_iterate(channel_t **channelpptr)
102 channel_t *ch = *channelpptr;
104 if (!list_empty(&channels)) {
106 ch = list_get_entry(list_get_first(&channels), channel_t, flatlist_node);
108 if (list_get_next(&ch->flatlist_node) == &channels)
111 ch = list_get_entry(list_get_next(&ch->flatlist_node), channel_t, flatlist_node);
119 channel_t *Chan_iterate_siblings(channel_t *parent, channel_t **channelpptr)
121 channel_t *ch = *channelpptr;
123 if (!list_empty(&parent->subs)) {
125 ch = list_get_entry(list_get_first(&parent->subs), channel_t, node);
127 if (list_get_next(&ch->node) == &parent->subs)
130 ch = list_get_entry(list_get_next(&ch->node), channel_t, node);
141 conf_channel_t chdesc;
142 conf_channel_link_t chlink;
143 const char *defaultChannelName;
145 defaultChannelName = getStrConf(DEFAULT_CHANNEL);
148 if (Conf_getNextChannel(&chdesc, i) < 0) {
150 Log_fatal("No valid channels found in configuration file. Exiting.");
154 rootChan = createChannel(0, chdesc.name, chdesc.description);
155 rootChan->noenter = chdesc.noenter;
156 rootChan->silent = chdesc.silent;
157 list_add_tail(&rootChan->flatlist_node, &channels);
158 if (strcmp(defaultChannelName, chdesc.name) == 0)
159 defaultChan = rootChan;
162 channel_t *ch, *ch_itr = NULL;
163 ch = Chan_createChannel(chdesc.name, chdesc.description);
164 ch->noenter = chdesc.noenter;
165 ch->position = chdesc.position;
166 ch->silent = chdesc.silent;
167 if (chdesc.password) {
168 Log_info("Setting password on channel '%s'", ch->name);
169 ch->password = strdup(chdesc.password);
171 if (strcmp(defaultChannelName, chdesc.name) == 0) {
172 Log_info("Setting default channel '%s'", ch->name);
177 Chan_iterate(&ch_itr);
178 } while (ch_itr != NULL && strcmp(ch_itr->name, chdesc.parent) != 0);
181 Log_fatal("Error in channel configuration: parent '%s' not found", chdesc.parent);
183 Chan_addChannel(ch_itr, ch);
184 Log_info("Adding channel '%s' parent '%s'", ch->name, chdesc.parent);
188 if (defaultChan == NULL)
189 defaultChan = rootChan;
191 if (defaultChan->noenter)
192 Log_fatal("Error in channel configuration: default channel is marked as noenter");
193 if (defaultChan->password)
194 Log_fatal("Error in channel configuration: default channel has a password");
198 channel_t *ch_src, *ch_dst, *ch_itr = NULL;
199 if (Conf_getNextChannelLink(&chlink, i) < 0) {
201 Log_info("No channel links found in configuration file.");
206 Chan_iterate(&ch_itr);
207 } while (ch_itr != NULL && strcmp(ch_itr->name, chlink.source) != 0);
209 Log_fatal("Error in channel link configuration: source channel '%s' not found.",
216 Chan_iterate(&ch_itr);
217 } while (ch_itr != NULL && strcmp(ch_itr->name, chlink.destination) != 0);
219 Log_fatal("Error in channel link configuration: destination channel '%s' not found",
224 list_add_tail(&ch_dst->link_node, &ch_src->channel_links);
226 Log_info("Adding channel link '%s' -> '%s'", ch_src->name, ch_dst->name);
232 struct dlist *itr, *save;
235 list_iterate_safe(itr, save, &channels) {
236 ch = list_get_entry(itr, channel_t, flatlist_node);
237 Log_debug("Free channel '%s'", ch->name);
247 channel_t *Chan_createChannel(const char *name, const char *desc)
249 int id = findFreeId();
251 Log_fatal("No free channel ID found");
252 return createChannel(id, name, desc);
255 void Chan_freeChannel(channel_t *ch)
258 list_del(&ch->flatlist_node);
262 void Chan_addChannel(channel_t *parent, channel_t *ch)
264 list_add_tail(&ch->node, &parent->subs);
266 list_add_tail(&ch->flatlist_node, &channels);
270 int Chan_userLeave(client_t *client)
272 channel_t *leaving = NULL;
275 if (client->channel) {
276 list_del(&client->chan_node);
277 leaving = (channel_t *)client->channel;
278 if (leaving->temporary && list_empty(&leaving->clients)) {
279 leaving_id = leaving->id;
280 Chan_freeChannel(leaving);
286 int Chan_userJoin(channel_t *ch, client_t *client)
290 /* Do nothing if user already is in this channel */
291 if ((channel_t *)client->channel == ch)
294 Log_debug("Add user %s to channel %s", client->username, ch->name);
295 /* Only allowed in one channel at a time */
296 leaving_id = Chan_userLeave(client);
297 list_add_tail(&client->chan_node, &ch->clients);
298 client->channel = (void *)ch;
302 int Chan_userJoin_id(int channelid, client_t *client)
304 channel_t *ch_itr = NULL;
306 Chan_iterate(&ch_itr);
307 } while (ch_itr != NULL && ch_itr->id != channelid);
308 if (ch_itr == NULL) {
309 Log_warn("Channel id %d not found - ignoring.", channelid);
313 return Chan_userJoin(ch_itr, client);
316 channelJoinResult_t Chan_userJoin_id_test(int channelid, client_t *client)
318 channel_t *ch_itr = NULL;
320 Chan_iterate(&ch_itr);
321 } while (ch_itr != NULL && ch_itr->id != channelid);
322 if (ch_itr == NULL) {
323 Log_warn("Channel id %d not found - ignoring.", channelid);
324 return CHJOIN_NOTFOUND;
326 else if (ch_itr->noenter)
327 return CHJOIN_NOENTER;
328 else if (ch_itr->password && !Client_token_match(client, ch_itr->password))
329 return CHJOIN_WRONGPW;
330 else return CHJOIN_OK;
334 void Chan_addChannel_id(int parentId, channel_t *ch)
336 channel_t *ch_itr = NULL;
338 Chan_iterate(&ch_itr);
339 } while (ch_itr != NULL && ch_itr->id != parentId);
341 Log_warn("Chan_addChannel_id: Channel id %d not found - ignoring.", parentId);
343 list_add_tail(&ch->node, &ch_itr->subs);
347 channel_t *Chan_fromId(int channelid)
349 channel_t *ch_itr = NULL;
351 Chan_iterate(&ch_itr);
352 } while (ch_itr != NULL && ch_itr->id != channelid);
354 Log_warn("Chan_fromId: Channel id %d not found.", channelid);
358 void Chan_removeChannel(channel_t *ch)
363 void Chan_buildTreeList(channel_t *ch, struct dlist *head)
369 chl = malloc(sizeof(channellist_t));
371 init_list_entry(&chl->node);
372 list_add_tail(&chl->node, head);
374 list_iterate(itr, &ch->subs) {
375 sub = list_get_entry(itr, channel_t, node);
376 Chan_buildTreeList(sub, head);
380 void Chan_freeTreeList(struct dlist *head)
382 struct dlist *itr, *save;
383 list_iterate_safe(itr, save, head) {
384 free(list_get_entry(itr, channellist_t, node));