1 /* event_neonspam_join.c - NeonServ v5.2
2 * Copyright (C) 2011 Philipp Kreil (pk910)
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 static USERAUTH_CALLBACK(neonspam_event_join_nick_lookup);
19 static void neonspam_event_join_punish(struct ClientSocket *client, struct ChanUser *chanuser, struct NeonSpamSettings *settings, int action);
20 static int neonspam_joinfloodscan(struct NeonSpamSettings *settings, struct ChanUser *chanuser);
22 struct neonspam_event_join_cache {
23 struct ClientSocket *client;
24 struct ChanUser *chanuser;
25 struct NeonSpamSettings *settings;
29 static void neonspam_event_join(struct ChanUser *chanuser) {
30 if(chanuser->user->flags & USERFLAG_WAS_REGISTRING) return;
31 struct ClientSocket *client = getChannelBot(chanuser->chan, BOTID);
32 if(!client) return; //we can't "see" this event
33 loadNeonSpamSettings(chanuser->chan);
34 struct NeonSpamSettings *settings = chanuser->chan->spam_settings;
35 if(!settings || !(settings->flags & SPAMSETTINGS_JOINSCAN)) return;
36 if(settings->exceptlevel[SPAMSETTINGS_JOINEXCINDEX] == 0) return;
37 int result = neonspam_joinfloodscan(settings, chanuser);
38 if(result != SPAMSERV_CHECK_IGNORE) {
39 //whois the user to check against exceptlevel
40 if((chanuser->user->flags & USERFLAG_ISAUTHED) || settings->exceptlevel[SPAMSETTINGS_JOINEXCINDEX] == 501) {
41 neonspam_event_join_punish(client, chanuser, settings, result);
43 struct neonspam_event_join_cache *cache = malloc(sizeof(*cache));
45 perror("malloc() failed");
48 cache->client = client;
49 cache->chanuser = chanuser;
50 cache->settings = settings;
51 cache->action = result;
52 get_userauth(chanuser->user, neonspam_event_join_nick_lookup, cache);
57 static USERAUTH_CALLBACK(neonspam_event_join_nick_lookup) {
58 struct neonspam_event_join_cache *cache = data;
59 neonspam_event_join_punish(cache->client, cache->chanuser, cache->settings, cache->action);
63 static void neonspam_event_join_punish(struct ClientSocket *client, struct ChanUser *chanuser, struct NeonSpamSettings *settings, int action) {
65 if(chanuser->user->flags & USERFLAG_ISAUTHED)
66 uaccess = getChannelAccess(chanuser->user, chanuser->chan);
67 if(uaccess >= settings->exceptlevel[SPAMSETTINGS_JOINEXCINDEX]) return;
68 //scanops / scanvoiced
70 MYSQL_ROW row, defaults = NULL;
71 loadChannelSettings(chanuser->chan);
72 printf_mysql_query("SELECT `channel_flood_reaction`, `channel_flood_reaction_duration`, `channel_getop`, `channel_getvoice` FROM `channels` WHERE `channel_id` = '%d'", chanuser->chan->channel_id);
74 row = mysql_fetch_row(res);
75 if(!row[0] || !row[1] || !row[2] || !row[3]) {
76 printf_mysql_query("SELECT `channel_flood_reaction`, `channel_flood_reaction_duration`, `channel_getop`, `channel_getvoice` FROM `channels` WHERE `channel_name` = 'defaults'");
78 defaults = mysql_fetch_row(res);
80 if(!(settings->flags & SPAMSETTINGS_JOINSCAN_OPS) && uaccess >= atoi((row[2] ? row[2] : defaults[2]))) return;
81 if(!(settings->flags & SPAMSETTINGS_JOINSCAN_VOICE) && uaccess >= atoi((row[3] ? row[3] : defaults[3]))) return;
83 sprintf(reason, SPAMSERV_MSG_WARNING, SPAMSERV_MSG_JOINFLOOD);
84 if(action == SPAMSERV_CHECK_WARN) {
85 reply(client, chanuser->user, "%s", reason);
86 } else if(action == SPAMSERV_CHECK_PUNISH) {
87 int duration = atoi((row[1] ? row[1] : defaults[1]));
88 char banmaskBuf[NICKLEN+USERLEN+HOSTLEN+3];
90 switch (atoi((row[0] ? row[0] : defaults[0]))) {
92 banmask = generate_banmask(chanuser->user, banmaskBuf);
93 printf_mysql_query("INSERT INTO `bans` (`ban_channel`, `ban_mask`, `ban_triggered`, `ban_timeout`, `ban_owner`, `ban_reason`) VALUES ('%d', '%s', UNIX_TIMESTAMP(), '%lu', '%d', '%s')", chanuser->chan->channel_id, escape_string(banmask), (unsigned long) (duration ? (time(0) + duration) : 0), 0, escape_string(reason));
95 int banid = (int) mysql_insert_id(mysql_conn);
98 sprintf(nameBuf, "ban_%d", banid);
99 sprintf(banidBuf, "%d", banid);
100 timeq_add_name(nameBuf, duration, channel_ban_timeout, strdup(banidBuf));
104 banmask = generate_banmask(chanuser->user, banmaskBuf);
105 putsock(client, "MODE %s +b %s", chanuser->chan->name, banmask);
107 putsock(client, "KICK %s %s :%s", chanuser->chan->name, chanuser->user->nick, reason);
113 static int neonspam_update_join_penalty(struct NeonSpamSettings *settings, struct NeonSpamJoinNode *joinnode, int addjoin) {
114 int last_update = time(0) - joinnode->last_penalty_update;
116 if(last_update < MAX_JOIN_TIME && joinnode->joinpenalty) {
117 joinnode->joinpenalty -= last_update * (MAX_JOIN_TIME / settings->sensibility_time[SPAMSETTINGS_JOINSENINDEX]);
118 if(joinnode->joinpenalty < 0)
119 joinnode->joinpenalty = 0;
121 joinnode->joinpenalty = 0;
122 joinnode->last_penalty_update = time(0);
124 joinnode->joinpenalty += MAX_JOIN_TIME * addjoin;
125 return joinnode->joinpenalty / MAX_JOIN_TIME + ((joinnode->joinpenalty % MAX_JOIN_TIME) ? 1 : 0);
128 static int neonspam_joinfloodscan(struct NeonSpamSettings *settings, struct ChanUser *chanuser) {
129 if(!chanuser->spamnode)
130 createSpamNode(chanuser);
131 int joins_pending = neonspam_update_join_penalty(settings, getNeonSpamJoinNode(chanuser), 1);
132 if(joins_pending == settings->sensibility_amount[SPAMSETTINGS_JOINSENINDEX])
133 return SPAMSERV_CHECK_WARN;
134 else if(joins_pending > settings->sensibility_amount[SPAMSETTINGS_JOINSENINDEX])
135 return SPAMSERV_CHECK_PUNISH;
137 return SPAMSERV_CHECK_IGNORE;