src/mod-snoop.c

   1 /* mod-snoop.c - User surveillance module (per pomac's spec)
   2  * Copyright 2002-2004 srvx Development Team
   3  *
   4  * This file is part of srvx.
   5  *
   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.
  10  *
  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.
  15  *
  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.
  19  */
  20
  21 /* Adds new section to srvx.conf:
  22  * "modules" {
  23  *     "snoop" {
  24  *         // Where to send snoop messages?
  25  *         "channel" "#wherever";
  26  *         // Which bot?
  27  *         "bot" "OpServ";
  28  *         // Show new users and joins from net joins?  (off by default)
  29  *         "show_bursts" "0";
  30  *     };
  31  * };
  32  */
  33
  34 #include "conf.h"
  35 #include "helpfile.h"
  36 #include "nickserv.h"
  37
  38 #ifdef HAVE_NETINET_IN_H
  39 #include <netinet/in.h>
  40 #endif
  41 #ifdef HAVE_ARPA_INET_H
  42 #include <arpa/inet.h>
  43 #endif
  44
  45 extern time_t now;
  46 static struct {
  47     struct chanNode *channel;
  48     struct userNode *bot;
  49     unsigned int show_bursts : 1;
  50     unsigned int enabled : 1;
  51 } snoop_cfg;
  52 static char timestamp[16];
  53 const char *snoop_module_deps[] = { NULL };
  54
  55 static int finalized;
  56 int snoop_finalize(void);
  57
  58 #define SNOOP(FORMAT, ARGS...) send_channel_message(snoop_cfg.channel, snoop_cfg.bot, "%s "FORMAT, timestamp , ## ARGS)
  59 #define UPDATE_TIMESTAMP() strftime(timestamp, sizeof(timestamp), "[%H:%M:%S]", localtime(&now))
  60
  61 static void
  62 snoop_nick_change(struct userNode *user, const char *old_nick) {
  63     if (!snoop_cfg.enabled) return;
  64     UPDATE_TIMESTAMP();
  65     SNOOP("$bNICK$b change %s -> %s", old_nick, user->nick);
  66 }
  67
  68 static int
  69 snoop_join(struct modeNode *mNode) {
  70     struct userNode *user = mNode->user;
  71     struct chanNode *chan = mNode->channel;
  72     if (!snoop_cfg.enabled) return 0;
  73     if (user->uplink->burst && !snoop_cfg.show_bursts) return 0;
  74     UPDATE_TIMESTAMP();
  75     if (chan->members.used == 1) {
  76         SNOOP("$bCREATE$b %s by %s", chan->name, user->nick);
  77     } else {
  78         SNOOP("$bJOIN$b %s by %s", chan->name, user->nick);
  79     }
  80     return 0;
  81 }
  82
  83 static void
  84 snoop_part(struct modeNode *mn, const char *reason) {
  85     if (!snoop_cfg.enabled) return;
  86     if (mn->user->dead) return;
  87     UPDATE_TIMESTAMP();
  88     SNOOP("$bPART$b %s by %s (%s)", mn->channel->name, mn->user->nick, reason ? reason : "");
  89 }
  90
  91 static void
  92 snoop_kick(struct userNode *kicker, struct userNode *victim, struct chanNode *chan) {
  93     if (!snoop_cfg.enabled) return;
  94     UPDATE_TIMESTAMP();
  95     SNOOP("$bKICK$b %s from %s by %s", victim->nick, chan->name, (kicker ? kicker->nick : "some server"));
  96 }
  97
  98 static int
  99 snoop_new_user(struct userNode *user) {
 100     if (!snoop_cfg.enabled) return 0;
 101     if (user->uplink->burst && !snoop_cfg.show_bursts) return 0;
 102     UPDATE_TIMESTAMP();
 103     SNOOP("$bNICK$b %s %s@%s [%s] on %s", user->nick, user->ident, user->hostname, inet_ntoa(user->ip), user->uplink->name);
 104     return 0;
 105 }
 106
 107 static void
 108 snoop_del_user(struct userNode *user, struct userNode *killer, const char *why) {
 109     if (!snoop_cfg.enabled) return;
 110     UPDATE_TIMESTAMP();
 111     if (killer) {
 112         SNOOP("$bKILL$b %s (%s@%s, on %s) by %s (%s)", user->nick, user->ident, user->hostname, user->uplink->name, killer->nick, why);
 113     } else {
 114         SNOOP("$bQUIT$b %s (%s@%s, on %s) (%s)", user->nick, user->ident, user->hostname, user->uplink->name, why);
 115     }
 116 }
 117
 118 static void
 119 snoop_auth(struct userNode *user, UNUSED_ARG(struct handle_info *old_handle)) {
 120     if (!snoop_cfg.enabled) return;
 121     if (user->uplink->burst && !snoop_cfg.show_bursts) return;
 122     if (user->handle_info) {
 123         UPDATE_TIMESTAMP();
 124         SNOOP("$bAUTH$b %s as %s", user->nick, user->handle_info->handle);
 125     }
 126 }
 127
 128 static void
 129 snoop_conf_read(void) {
 130     dict_t node;
 131     char *str;
 132
 133     node = conf_get_data("modules/snoop", RECDB_OBJECT);
 134     if (!node)
 135         return;
 136     str = database_get_data(node, "channel", RECDB_QSTRING);
 137     if (!str)
 138         return;
 139     snoop_cfg.channel = AddChannel(str, now, "+sntim", NULL, NULL);
 140     if (!snoop_cfg.channel)
 141         return;
 142     str = database_get_data(node, "show_bursts", RECDB_QSTRING);
 143     snoop_cfg.show_bursts = str ? enabled_string(str) : 0;
 144     snoop_cfg.enabled = 1;
 145     if (finalized)
 146         snoop_finalize();
 147 }
 148
 149 void
 150 snoop_cleanup(void) {
 151     snoop_cfg.enabled = 0;
 152     unreg_del_user_func(snoop_del_user);
 153 }
 154
 155 int
 156 snoop_init(void) {
 157     reg_exit_func(snoop_cleanup);
 158     conf_register_reload(snoop_conf_read);
 159     reg_nick_change_func(snoop_nick_change);
 160     reg_join_func(snoop_join);
 161     reg_part_func(snoop_part);
 162     reg_kick_func(snoop_kick);
 163     reg_new_user_func(snoop_new_user);
 164     reg_del_user_func(snoop_del_user);
 165     reg_auth_func(snoop_auth);
 166     /* Not implemented since hooks don't exist or lack data desired:
 167      * chanmode (issuing user not listed)
 168      * usermode (no hook)
 169      */
 170     return 1;
 171 }
 172
 173 int
 174 snoop_finalize(void) {
 175     struct mod_chanmode change;
 176     dict_t node;
 177     char *str;
 178
 179     finalized = 1;
 180     node = conf_get_data("modules/snoop", RECDB_OBJECT);
 181     if (!node)
 182         return 0;
 183     str = database_get_data(node, "bot", RECDB_QSTRING);
 184     if (!str)
 185         return 0;
 186     snoop_cfg.bot = GetUserH(str);
 187     if (!snoop_cfg.bot)
 188         return 0;
 189     mod_chanmode_init(&change);
 190     change.argc = 1;
 191     change.args[0].mode = MODE_CHANOP;
 192     change.args[0].member = AddChannelUser(snoop_cfg.bot, snoop_cfg.channel);
 193     mod_chanmode_announce(snoop_cfg.bot, snoop_cfg.channel, &change);
 194     return 1;
 195 }