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channel-events.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
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#include "channels-setup.h"
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#include "irc-servers.h"
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#include "irc-channels.h"
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static void check_join_failure(IRC_SERVER_REC *server, const char *channel)
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if (channel[0] == '!' && channel[1] == '!')
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channel++; /* server didn't understand !channels */
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chanrec = channel_find(SERVER(server), channel);
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if (chanrec == NULL && channel[0] == '!') {
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/* it probably replied with the full !channel name,
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find the channel with the short name.. */
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chan2 = g_strdup_printf("!%s", channel+6);
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chanrec = channel_find(SERVER(server), chan2);
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if (chanrec != NULL && !chanrec->joined) {
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channel_destroy(chanrec);
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static void irc_server_event(IRC_SERVER_REC *server, const char *line)
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char *params, *numeric, *channel;
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/* We'll be checking "4xx <your nick> <channel>" for channels
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which we haven't joined yet. 4xx are error codes and should
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indicate that the join failed. */
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params = event_get_params(line, 3, &numeric, NULL, &channel);
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if (numeric[0] == '4')
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check_join_failure(server, channel);
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static void event_no_such_channel(IRC_SERVER_REC *server, const char *data)
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CHANNEL_SETUP_REC *setup;
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char *params, *channel;
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params = event_get_params(data, 2, NULL, &channel);
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chanrec = *channel == '!' && channel[1] != '\0' ?
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channel_find(SERVER(server), channel) : NULL;
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if (chanrec != NULL) {
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/* !channel didn't exist, so join failed */
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setup = channel_setup_find(chanrec->name,
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chanrec->server->connrec->chatnet);
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if (setup != NULL && setup->autojoin) {
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/* it's autojoin channel though, so create it */
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irc_send_cmdv(server, "JOIN !%s", chanrec->name);
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check_join_failure(server, channel);
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static void event_duplicate_channel(IRC_SERVER_REC *server, const char *data)
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char *params, *channel, *p;
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g_return_if_fail(data != NULL);
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/* this new addition to ircd breaks completely with older
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"standards", "nick Duplicate ::!!channel ...." */
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params = event_get_params(data, 3, NULL, NULL, &channel);
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p = strchr(channel, ' ');
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if (p != NULL) *p = '\0';
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if (channel[0] == '!') {
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chanrec = channel_find(SERVER(server),
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channel+(channel[1] == '!'));
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if (chanrec != NULL && !chanrec->names_got) {
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chanrec->left = TRUE;
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channel_destroy(chanrec);
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static void event_target_unavailable(IRC_SERVER_REC *server, const char *data)
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char *params, *channel;
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g_return_if_fail(data != NULL);
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params = event_get_params(data, 2, NULL, &channel);
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if (ischannel(*channel)) {
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/* channel is unavailable - try to join again a bit later */
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check_join_failure(server, channel);
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static void channel_change_topic(IRC_SERVER_REC *server, const char *channel,
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const char *topic, const char *setby,
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CHANNEL_REC *chanrec;
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char *recoded = NULL;
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chanrec = channel_find(SERVER(server), channel);
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if (chanrec == NULL) return;
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/* the topic may be send out encoded, so we need to
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recode it back or /topic <tab> will not work properly */
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recoded = recode_in(SERVER(server), topic, channel);
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g_free_not_null(chanrec->topic);
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chanrec->topic = recoded == NULL ? NULL : g_strdup(recoded);
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g_free_not_null(chanrec->topic_by);
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chanrec->topic_by = g_strdup(setby);
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chanrec->topic_time = settime;
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signal_emit("channel topic changed", 1, chanrec);
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static void event_topic_get(IRC_SERVER_REC *server, const char *data)
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char *params, *channel, *topic;
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g_return_if_fail(data != NULL);
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params = event_get_params(data, 3, NULL, &channel, &topic);
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channel_change_topic(server, channel, topic, NULL, 0);
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static void event_topic(IRC_SERVER_REC *server, const char *data,
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const char *nick, const char *addr)
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char *params, *channel, *topic, *mask;
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g_return_if_fail(data != NULL);
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params = event_get_params(data, 2, &channel, &topic);
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mask = addr == NULL ? g_strdup(nick) :
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g_strconcat(nick, "!", addr, NULL);
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channel_change_topic(server, channel, topic, mask, time(NULL));
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static void event_topic_info(IRC_SERVER_REC *server, const char *data)
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char *params, *channel, *topicby, *topictime;
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g_return_if_fail(data != NULL);
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params = event_get_params(data, 4, NULL, &channel,
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&topicby, &topictime);
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t = (time_t) atol(topictime);
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channel_change_topic(server, channel, NULL, topicby, t);
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/* Find any unjoined channel that matches `channel'. Long channel names are
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also a bit problematic, so find a channel where start of the name matches. */
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static IRC_CHANNEL_REC *channel_find_unjoined(IRC_SERVER_REC *server,
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len = strlen(channel);
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for (tmp = server->channels; tmp != NULL; tmp = tmp->next) {
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IRC_CHANNEL_REC *rec = tmp->data;
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if (!IS_IRC_CHANNEL(rec) || rec->joined)
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if (g_strncasecmp(channel, rec->name, len) == 0 &&
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(len > 20 || rec->name[len] == '\0'))
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static void event_join(IRC_SERVER_REC *server, const char *data, const char *nick, const char *address)
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char *params, *channel, *tmp, *shortchan;
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IRC_CHANNEL_REC *chanrec;
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g_return_if_fail(data != NULL);
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if (g_strcasecmp(nick, server->nick) != 0) {
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/* someone else joined channel, no need to do anything */
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if (server->userhost == NULL)
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server->userhost = g_strdup(address);
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params = event_get_params(data, 1, &channel);
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tmp = strchr(channel, 7); /* ^G does something weird.. */
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if (tmp != NULL) *tmp = '\0';
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if (*channel != '!' || strlen(channel) < 7)
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/* !channels have 5 chars long identification string before
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it's name, it's not known when /join is called so rename
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!channel here to !ABCDEchannel */
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shortchan = g_strdup_printf("!%s", channel+6);
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chanrec = channel_find_unjoined(server, shortchan);
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if (chanrec != NULL) {
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channel_change_name(CHANNEL(chanrec), channel);
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g_free(chanrec->name);
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chanrec->name = g_strdup(channel);
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/* well, did we join it with full name? if so, and if
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this was the first short one, change it's name. */
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chanrec = channel_find_unjoined(server, channel);
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if (chanrec != NULL &&
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irc_channel_find(server, shortchan) == NULL) {
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channel_change_visible_name(CHANNEL(chanrec),
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chanrec = irc_channel_find(server, channel);
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if (chanrec != NULL && chanrec->joined) {
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/* already joined this channel - probably a broken proxy that
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forgot to send PART between */
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chanrec->left = TRUE;
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channel_destroy(CHANNEL(chanrec));
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if (chanrec == NULL) {
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/* look again, because of the channel name cut issues. */
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chanrec = channel_find_unjoined(server, channel);
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if (chanrec == NULL) {
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/* didn't get here with /join command.. */
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chanrec = irc_channel_create(server, channel, shortchan, TRUE);
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chanrec->joined = TRUE;
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if (strcmp(chanrec->name, channel) != 0) {
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g_free(chanrec->name);
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chanrec->name = g_strdup(channel);
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static void event_part(IRC_SERVER_REC *server, const char *data, const char *nick)
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char *params, *channel, *reason;
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CHANNEL_REC *chanrec;
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g_return_if_fail(data != NULL);
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if (g_strcasecmp(nick, server->nick) != 0) {
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/* someone else part, no need to do anything here */
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params = event_get_params(data, 2, &channel, &reason);
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chanrec = channel_find(SERVER(server), channel);
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if (chanrec != NULL && chanrec->joined) {
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chanrec->left = TRUE;
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channel_destroy(chanrec);
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static void event_kick(IRC_SERVER_REC *server, const char *data)
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CHANNEL_REC *chanrec;
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char *params, *channel, *nick, *reason;
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g_return_if_fail(data != NULL);
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params = event_get_params(data, 3, &channel, &nick, &reason);
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if (g_strcasecmp(nick, server->nick) != 0) {
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/* someone else was kicked, no need to do anything */
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chanrec = channel_find(SERVER(server), channel);
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if (chanrec != NULL) {
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irc_server_purge_output(server, channel);
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chanrec->kicked = TRUE;
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channel_destroy(chanrec);
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static void event_invite(IRC_SERVER_REC *server, const char *data)
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char *params, *channel, *shortchan;
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g_return_if_fail(data != NULL);
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params = event_get_params(data, 2, NULL, &channel);
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if (irc_channel_find(server, channel) == NULL) {
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/* check if we're supposed to autojoin this channel */
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CHANNEL_SETUP_REC *setup;
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setup = channel_setup_find(channel, server->connrec->chatnet);
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if (setup == NULL && channel[0] == '!' &&
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strlen(channel) > 6) {
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shortchan = g_strdup_printf("!%s", channel+6);
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setup = channel_setup_find(shortchan,
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server->connrec->chatnet);
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if (setup != NULL && setup->autojoin && settings_get_bool("join_auto_chans_on_invite"))
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server->channels_join(SERVER(server), channel, TRUE);
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g_free_not_null(server->last_invite);
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server->last_invite = g_strdup(channel);
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void channel_events_init(void)
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settings_add_bool("misc", "join_auto_chans_on_invite", TRUE);
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signal_add_first("server event", (SIGNAL_FUNC) irc_server_event);
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signal_add_first("event 403", (SIGNAL_FUNC) event_no_such_channel); /* no such channel */
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signal_add_first("event 407", (SIGNAL_FUNC) event_duplicate_channel); /* duplicate channel */
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signal_add("event topic", (SIGNAL_FUNC) event_topic);
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signal_add_first("event join", (SIGNAL_FUNC) event_join);
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signal_add("event part", (SIGNAL_FUNC) event_part);
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signal_add("event kick", (SIGNAL_FUNC) event_kick);
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signal_add("event invite", (SIGNAL_FUNC) event_invite);
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signal_add("event 332", (SIGNAL_FUNC) event_topic_get);
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signal_add("event 333", (SIGNAL_FUNC) event_topic_info);
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signal_add_first("event 437", (SIGNAL_FUNC) event_target_unavailable); /* channel/nick unavailable */
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void channel_events_deinit(void)
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signal_remove("server event", (SIGNAL_FUNC) irc_server_event);
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signal_remove("event 403", (SIGNAL_FUNC) event_no_such_channel); /* no such channel */
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signal_remove("event 407", (SIGNAL_FUNC) event_duplicate_channel); /* duplicate channel */
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signal_remove("event topic", (SIGNAL_FUNC) event_topic);
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signal_remove("event join", (SIGNAL_FUNC) event_join);
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signal_remove("event part", (SIGNAL_FUNC) event_part);
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signal_remove("event kick", (SIGNAL_FUNC) event_kick);
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signal_remove("event invite", (SIGNAL_FUNC) event_invite);
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signal_remove("event 332", (SIGNAL_FUNC) event_topic_get);
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signal_remove("event 333", (SIGNAL_FUNC) event_topic_info);
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signal_remove("event 437", (SIGNAL_FUNC) event_target_unavailable); /* channel/nick unavailable */