src/spamserv.c

   1 /* spamserv.c - anti spam service
   2  * Copyright 2004 feigling
   3  *
   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 2 of the License, or
   7  * (at your option) any later version.  Important limitations are
   8  * listed in the COPYING file that accompanies this software.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, email srvx-maintainers@srvx.net.
  17  *
  18  * $Id: spamserv.c,v 1.08 2004/06/27 22:21:00 feigling Exp $
  19  */
  20
  21 #include "conf.h"
  22 #include "spamserv.h"
  23 #include "chanserv.h"
  24 #include "global.h"
  25 #include "modcmd.h"
  26 #include "saxdb.h"
  27 #include "timeq.h"
  28 #include "gline.h"
  29
  30 #define SPAMSERV_CONF_NAME           "services/spamserv"
  31
  32 #define KEY_EXCEPTIONS               "exceptions"
  33 #define KEY_FLAGS                    "flags"
  34 #define KEY_INFO                     "info"
  35 #define KEY_EXCEPTLEVEL              "exceptlevel"
  36 #define KEY_EXPIRY                   "expiry"
  37
  38 #define KEY_DEBUG_CHANNEL            "debug_channel"
  39 #define KEY_GLOBAL_EXCEPTIONS        "global_exceptions"
  40 #define KEY_NETWORK_RULES            "network_rules"
  41 #define KEY_TRIGGER                  "trigger"
  42 #define KEY_SHORT_BAN_DURATION       "short_ban_duration"
  43 #define KEY_LONG_BAN_DURATION        "long_ban_duration"
  44 #define KEY_GLINE_DURATION           "gline_duration"
  45 #define KEY_EXCEPTION_MAX            "exception_max"
  46 #define KEY_EXCEPTION_MIN_LEN        "exception_min_len"
  47 #define KEY_EXCEPTION_MAX_LEN        "exception_max_len"
  48 #define KEY_ADV_CHAN_MUST_EXIST      "adv_chan_must_exist"
  49 #define KEY_STRIP_MIRC_CODES         "strip_mirc_codes"
  50 #define KEY_ALLOW_MOVE_MERGE         "allow_move_merge"
  51
  52 #define SPAMSERV_FUNC(NAME)     MODCMD_FUNC(NAME)
  53 #define SPAMSERV_SYNTAX()       svccmd_send_help(user, spamserv, cmd)
  54 #define SPAMSERV_MIN_PARMS(N) do { \
  55 (void)argv; \
  56   if(argc < N) { \
  57     ss_reply(MSG_MISSING_PARAMS, argv[0]); \
  58     SPAMSERV_SYNTAX(); \
  59     return 0; } } while(0)
  60
  61 struct userNode                 *spamserv;
  62 static struct module    *spamserv_module;
  63 static struct service   *spamserv_service;
  64 static struct log_type  *SS_LOG;
  65 static unsigned long    crc_table[256];
  66
  67 dict_t registered_channels_dict;
  68 dict_t connected_users_dict;
  69 dict_t killed_users_dict;
  70
  71 #define spamserv_notice(target, format...) send_message(target , spamserv , ## format)
  72 #define spamserv_debug(format...) do { if(spamserv_conf.debug_channel) send_channel_notice(spamserv_conf.debug_channel , spamserv , ## format); } while(0)
  73 #define ss_reply(format...)     send_message(user , spamserv , ## format)
  74
  75 #define SET_SUBCMDS_SIZE 10
  76
  77 const char *set_subcommands[SET_SUBCMDS_SIZE] = {"SPAMLIMIT", "ADVREACTION", "WARNREACTION", "ADVSCAN", "SPAMSCAN", "FLOODSCAN", "JOINFLOODSCAN", "EXCEPTLEVEL","SCANCHANOPS", "SCANVOICED"};
  78
  79 static void spamserv_clear_spamNodes(struct chanNode *channel);
  80 static void spamserv_punish(struct chanNode *channel, struct userNode *user, time_t expires, char *reason, int ban);
  81 static unsigned long crc32(const char *text);
  82
  83 #define BINARY_OPTION(arguments...)     return binary_option(arguments, user, channel, argc, argv);
  84 #define MULTIPLE_OPTION(arguments...)   return multiple_option(arguments, values, ArrayLength(values), user, channel, argc, argv);
  85
  86 static const struct message_entry msgtab[] = {
  87     { "SSMSG_CHANNEL_OPTIONS",         "Channel Options:" },
  88     { "SSMSG_STRING_VALUE",            "$b%s$b%s" },
  89     { "SSMSG_NUMERIC_VALUE",           "$b%s$b%d - %s" },
  90     { "SSMSG_EASYNUMERIC_VALUE",       "$b%s$b%d" },
  91     { "SSMSG_INVALID_NUM_SET",         "$b'%d'$b is an invalid %s setting." },
  92     { "SSMSG_INVALID_OPTION",          "$b%s$b is not a valid %s option." },
  93     { "SSMSG_INVALID_BINARY",          "$b%s$b is an invalid binary value." },
  94
  95     { "SSMSG_NOT_REGISTERED",          "$b%s$b has not been registered with $b$X$b." },
  96     { "SSMSG_NOT_REGISTERED_CS",       "$b%s$b has not been registered with $b$C$b." },
  97     { "SSMSG_ALREADY_REGISTERED",      "$b%s$b is already registered." },
  98     { "SSMSG_DEBUG_CHAN",              "You may not register the debug channel." },
  99     { "SSMSG_SUSPENDED_CS",            "$b$C$b access to $b%s$b has been temporarily suspended, thus you can't %s it." },
 100     { "SSMSG_SUSPENDED",               "$b$X$b access to $b%s$b has been temporarily suspended." },
 101     { "SSMSG_NO_REGISTER",             "Due to an error it was not possible to register $b%s$b." },
 102     { "SSMSG_REG_SUCCESS",             "Channel $b%s$b registered." },
 103     { "SSMSG_UNREG_SUCCESS",           "$b%s$b has been unregistered." },
 104     { "SSMSG_NO_ACCESS",               "You lack sufficient access to use this command." },
 105     { "SSMSG_MUST_BE_OPER",            "You must be an irc operator to set this option." },
 106     { "SSMSG_CONFIRM_UNREG",           "To confirm this unregistration, you must append 'CONFIRM' to the end of your command. For example, 'unregister CONFIRM'." },
 107
 108     { "SSMSG_NO_EXCEPTIONS",           "No words found in the exception list." },
 109     { "SSMSG_NO_SUCH_EXCEPTION",       "Word $b%s$b not found in the exception list." },
 110     { "SSMSG_EXCEPTION_LIST",          "The following words are in the exception list:" },
 111     { "SSMSG_EXCEPTION_ADDED",         "Word $b%s$b added to the exception list." },
 112     { "SSMSG_EXCEPTION_DELETED",       "Word $b%s$b deleted from the exception list." },
 113     { "SSMSG_EXCEPTION_IN_LIST",       "The word $b%s$b is already in the exception list." },
 114     { "SSMSG_EXCEPTION_MAX",           "The exception list has reached the maximum exceptions (max %lu). Delete a word to add another one." },
 115     { "SSMSG_EXCEPTION_TOO_SHORT",     "The word must be at least %lu characters long." },
 116     { "SSMSG_EXCEPTION_TOO_LONG",      "The word may not be longer than %lu characters." },
 117
 118     { "SSMSG_STATUS",                  "$bStatus:$b" },
 119     { "SSMSG_STATUS_USERS",            "Total Users Online:  %u" },
 120     { "SSMSG_STATUS_CHANNELS",         "Registered Channels: %u" },
 121     { "SSMSG_STATUS_MEMORY",           "$bMemory Information:$b" },
 122     { "SSMSG_STATUS_CHANNEL_LIST",     "$bRegistered Channels:$b" },
 123     { "SSMSG_STATUS_NO_CHANNEL",       "No channels registered." },
 124         { NULL, NULL }
 125 };
 126
 127 #define SSMSG_DEBUG_KICK              "Kicked user $b%s$b from $b%s$b, reason: %s"
 128 #define SSMSG_DEBUG_BAN               "Banned user $b%s$b from $b%s$b, reason: %s"
 129 #define SSMSG_DEBUG_KILL              "Killed user $b%s$b, last violation in $b%s$b"
 130 #define SSMSG_DEBUG_GLINE             "Glined user $b%s$b, host $b%s$b, last violation in $b%s$b"
 131 #define SSMSG_DEBUG_RECONNECT         "Killed user $b%s$b reconnected to the network"
 132 #define SSMSG_SPAM                    "Spamming"
 133 #define SSMSG_FLOOD                   "Flooding the channel/network"
 134 #define SSMSG_ADV                     "Advertising"
 135 #define SSMSG_JOINFLOOD               "Join flooding the channel"
 136 #define SSMSG_WARNING                 "%s is against the network rules"
 137 #define SSMSG_WARNING_2               "You are violating the network rules"
 138 #define SSMSG_WARNING_RULES           "%s is against the network rules. Read the network rules at %s"
 139 #define SSMSG_WARNING_RULES_2         "You are violating the network rules. Read the network rules at %s"
 140
 141 static struct
 142 {
 143         struct chanNode *debug_channel;
 144         struct string_list *global_exceptions;
 145         const char *network_rules;
 146         unsigned char trigger;
 147         unsigned long short_ban_duration;
 148         unsigned long long_ban_duration;
 149         unsigned long gline_duration;
 150         unsigned long exception_max;
 151         unsigned long exception_min_len;
 152         unsigned long exception_max_len;
 153         unsigned int adv_chan_must_exist : 1;
 154         unsigned int strip_mirc_codes : 1;
 155         unsigned int allow_move_merge : 1;
 156 } spamserv_conf;
 157
 158 /***********************************************/
 159 /*                   Channel                   */
 160 /***********************************************/
 161
 162 struct chanInfo*
 163 get_chanInfo(const char *channelname)
 164 {
 165         return dict_find(registered_channels_dict, channelname, 0);
 166 }
 167
 168 static void
 169 spamserv_join_channel(struct chanNode *channel)
 170 {
 171         struct mod_chanmode change;
 172         mod_chanmode_init(&change);
 173         change.argc = 1;
 174         change.args[0].mode = MODE_CHANOP;
 175         change.args[0].u.member = AddChannelUser(spamserv, channel);
 176         mod_chanmode_announce(spamserv, channel, &change);
 177 }
 178
 179 static void
 180 spamserv_part_channel(struct chanNode *channel, char *reason)
 181 {
 182         /* we only have to clear the spamNodes because every other node expires on it's own */
 183         spamserv_clear_spamNodes(channel);
 184         DelChannelUser(spamserv, channel, reason, 0);
 185 }
 186
 187 static struct chanInfo*
 188 spamserv_register_channel(struct chanNode *channel, struct string_list *exceptions, unsigned int flags, char *info)
 189 {
 190         struct chanInfo *cInfo = malloc(sizeof(struct chanInfo));
 191
 192         if(!cInfo)
 193         {
 194                 log_module(SS_LOG, LOG_ERROR, "Couldn't allocate memory for cInfo; channel: %s", channel->name);
 195                 return NULL;
 196         }
 197
 198         cInfo->channel = channel;
 199         cInfo->exceptions = exceptions ? string_list_copy(exceptions) : alloc_string_list(1);
 200         cInfo->flags = flags;
 201     cInfo->exceptlevel = 400;
 202         safestrncpy(cInfo->info, info, sizeof(cInfo->info));
 203         cInfo->suspend_expiry = 0;
 204         dict_insert(registered_channels_dict, cInfo->channel->name, cInfo);
 205
 206         return cInfo;
 207 }
 208
 209 static void
 210 spamserv_unregister_channel(struct chanInfo *cInfo)
 211 {
 212         if(!cInfo)
 213                 return;
 214
 215         dict_remove(registered_channels_dict, cInfo->channel->name);
 216         free_string_list(cInfo->exceptions);
 217         free(cInfo);
 218 }
 219
 220 void
 221 spamserv_cs_suspend(struct chanNode *channel, time_t expiry, int suspend, char *reason)
 222 {
 223         struct chanInfo *cInfo = get_chanInfo(channel->name);
 224
 225         if(cInfo)
 226         {
 227                 if(suspend)
 228                 {
 229                         cInfo->flags |= CHAN_SUSPENDED;
 230                         cInfo->suspend_expiry = expiry;
 231                         spamserv_part_channel(channel, reason);
 232                 }
 233                 else
 234                 {
 235                         if(CHECK_SUSPENDED(cInfo))
 236                         {
 237                                 cInfo->flags &= ~CHAN_SUSPENDED;
 238                                 cInfo->suspend_expiry = 0;
 239                         }
 240                 }
 241         }
 242 }
 243
 244 int
 245 spamserv_cs_move_merge(struct userNode *user, struct chanNode *channel, struct chanNode *target, int move)
 246 {
 247         struct chanInfo *cInfo = get_chanInfo(channel->name);
 248
 249         if(cInfo)
 250         {
 251                 char reason[MAXLEN];
 252
 253                 if(!spamserv_conf.allow_move_merge || get_chanInfo(target->name))
 254                 {
 255                         if(move)
 256                                 snprintf(reason, sizeof(reason), "unregistered due to a channel move to %s", target->name);
 257                         else
 258                                 snprintf(reason, sizeof(reason), "unregistered due to a channel merge into %s", target->name);
 259
 260                         spamserv_cs_unregister(user, channel, manually, reason);
 261                         return 0;
 262                 }
 263
 264                 cInfo->channel = target;
 265
 266                 dict_remove(registered_channels_dict, channel->name);
 267                 dict_insert(registered_channels_dict, target->name, cInfo);
 268
 269                 if(move)
 270                 {
 271                         snprintf(reason, sizeof(reason), "Channel moved to %s by %s.", target->name, user->handle_info->handle);
 272                 }
 273                 else
 274                 {
 275                         spamserv_join_channel(target);
 276                         snprintf(reason, sizeof(reason), "%s merged into %s by %s.", channel->name, target->name, user->handle_info->handle);
 277                 }
 278
 279                 if(!CHECK_SUSPENDED(cInfo))
 280                         spamserv_part_channel(channel, reason);
 281
 282                 if(move)
 283                         snprintf(reason, sizeof(reason), "$X (channel %s) moved to %s by %s.", channel->name, target->name, user->handle_info->handle);
 284                 else
 285                         snprintf(reason, sizeof(reason), "$X (channel %s) merged into %s by %s.", channel->name, target->name, user->handle_info->handle);
 286
 287                 global_message(MESSAGE_RECIPIENT_OPERS | MESSAGE_RECIPIENT_HELPERS, reason);
 288                 return 1;
 289         }
 290
 291         return 0;
 292 }
 293
 294 void
 295 spamserv_cs_unregister(struct userNode *user, struct chanNode *channel, enum cs_unreg type, char *reason)
 296 {
 297         struct chanInfo *cInfo = get_chanInfo(channel->name);
 298
 299         if(cInfo)
 300         {
 301                 char global[MAXLEN], partmsg[MAXLEN];
 302
 303                 switch (type)
 304                 {
 305                 case manually:
 306                         snprintf(global, sizeof(global), "$X (channel %s) %s by %s.", channel->name, reason, user->handle_info->handle);
 307                         snprintf(partmsg, sizeof(partmsg), "%s %s by %s.", channel->name, reason, user->handle_info->handle);
 308                         break;
 309                 case expire:
 310                         snprintf(global, sizeof(global), "$X (channel %s) registration expired.", channel->name);
 311                         snprintf(partmsg, sizeof(partmsg), "%s registration expired.", channel->name);
 312                         break;
 313                 case lost_all_users:
 314                         snprintf(global, sizeof(global), "$X (channel %s) lost all users.", channel->name);
 315                         snprintf(partmsg, sizeof(partmsg), "%s lost all users.", channel->name);
 316                         break;
 317                 }
 318
 319                 if(!CHECK_SUSPENDED(cInfo))
 320                         spamserv_part_channel(channel, partmsg);
 321
 322                 spamserv_unregister_channel(cInfo);
 323                 global_message(MESSAGE_RECIPIENT_OPERS | MESSAGE_RECIPIENT_HELPERS, global);
 324         }
 325 }
 326
 327 /***********************************************/
 328 /*                    User                     */
 329 /***********************************************/
 330
 331 static struct userInfo*
 332 get_userInfo(const char *nickname)
 333 {
 334         return dict_find(connected_users_dict, nickname, 0);
 335 }
 336
 337 static void
 338 spamserv_create_spamNode(struct chanNode *channel, struct userInfo *uInfo, char *text)
 339 {
 340         struct spamNode *sNode = malloc(sizeof(struct spamNode));
 341
 342         if(!sNode)
 343         {
 344                 log_module(SS_LOG, LOG_ERROR, "Couldn't allocate memory for sNode; channel: %s; user: %s", channel->name, uInfo->user->nick);
 345                 return;
 346         }
 347
 348         sNode->channel = channel;
 349         sNode->crc32 = crc32(text);
 350         sNode->count = 1;
 351         sNode->next = NULL;
 352
 353         if(uInfo->spam)
 354         {
 355                 struct spamNode *temp = uInfo->spam;
 356
 357                 while(temp->next)
 358                         temp = temp->next;
 359
 360                 sNode->prev = temp;
 361                 temp->next = sNode;
 362         }
 363         else
 364         {
 365                 sNode->prev = NULL;
 366                 uInfo->spam = sNode;
 367         }
 368 }
 369
 370 static void
 371 spamserv_delete_spamNode(struct userInfo *uInfo, struct spamNode *sNode)
 372 {
 373         if(!sNode)
 374                 return;
 375
 376         if(sNode == uInfo->spam)
 377                 uInfo->spam = sNode->next;
 378
 379         if(sNode->next)
 380                  sNode->next->prev = sNode->prev;
 381         if(sNode->prev)
 382                  sNode->prev->next = sNode->next;
 383
 384         free(sNode);
 385 }
 386
 387 static void
 388 spamserv_clear_spamNodes(struct chanNode *channel)
 389 {
 390         struct userInfo *uInfo;
 391         struct spamNode *sNode;
 392         unsigned int i;
 393
 394         for(i = 0; i < channel->members.used; i++)
 395         {
 396                 if((uInfo = get_userInfo(channel->members.list[i]->user->nick)))
 397                 {
 398                         if((sNode = uInfo->spam))
 399                         {
 400                                 for(; sNode; sNode = sNode->next)
 401                                         if(sNode->channel == channel)
 402                                                 break;
 403
 404                                 if(sNode)
 405                                         spamserv_delete_spamNode(uInfo, sNode);
 406                         }
 407                 }
 408         }
 409 }
 410
 411 static void
 412 spamserv_create_floodNode(struct chanNode *channel, struct userNode *user, struct floodNode **uI_fNode)
 413 {
 414         struct floodNode *fNode = malloc(sizeof(struct floodNode));
 415
 416         if(!fNode)
 417         {
 418                 log_module(SS_LOG, LOG_ERROR, "Couldn't allocate memory for fNode; channel: %s; user: %s", channel->name, user->nick);
 419                 return;
 420         }
 421
 422         fNode->channel = channel;
 423         fNode->owner = user;
 424         fNode->count = 1;
 425         fNode->time = now;
 426         fNode->next = NULL;
 427
 428         if(*uI_fNode)
 429         {
 430                 struct floodNode *temp = *uI_fNode;
 431
 432                 while(temp->next)
 433                         temp = temp->next;
 434
 435                 fNode->prev = temp;
 436                 temp->next = fNode;
 437         }
 438         else
 439         {
 440                 fNode->prev = NULL;
 441                 *uI_fNode = fNode;
 442         }
 443 }
 444
 445 static void
 446 spamserv_delete_floodNode(struct floodNode **uI_fNode, struct floodNode *fNode)
 447 {
 448         if(!fNode)
 449                 return;
 450
 451         if(fNode == *uI_fNode)
 452                 *uI_fNode = fNode->next;
 453
 454         if(fNode->next)
 455                  fNode->next->prev = fNode->prev;
 456         if(fNode->prev)
 457                  fNode->prev->next = fNode->next;
 458
 459         free(fNode);
 460 }
 461
 462 static void
 463 spamserv_create_user(struct userNode *user)
 464 {
 465         struct userInfo *uInfo = malloc(sizeof(struct userInfo));
 466         struct killNode *kNode = dict_find(killed_users_dict, irc_ntoa(&user->ip), 0);
 467
 468         if(!uInfo)
 469         {
 470                 log_module(SS_LOG, LOG_ERROR, "Couldn't allocate memory for uInfo; nick: %s", user->nick);
 471                 return;
 472         }
 473
 474         if(kNode)
 475                 spamserv_debug(SSMSG_DEBUG_RECONNECT, user->nick);
 476
 477         uInfo->user = user;
 478         uInfo->spam = NULL;
 479         uInfo->flood = NULL;
 480         uInfo->joinflood = NULL;
 481         uInfo->flags = kNode ? USER_KILLED : 0;
 482         uInfo->warnlevel = kNode ? kNode->warnlevel : 0;
 483         uInfo->lastadv = 0;
 484
 485         dict_insert(connected_users_dict, user->nick, uInfo);
 486
 487         if(kNode)
 488         {
 489                 dict_remove(killed_users_dict, irc_ntoa(&user->ip));
 490                 free(kNode);
 491         }
 492 }
 493
 494 static void
 495 spamserv_delete_user(struct userInfo *uInfo)
 496 {
 497         if(!uInfo)
 498                 return;
 499
 500         if(uInfo->spam)
 501                 while(uInfo->spam)
 502                         spamserv_delete_spamNode(uInfo, uInfo->spam);
 503
 504         if(uInfo->flood)
 505                 while(uInfo->flood)
 506                         spamserv_delete_floodNode(&uInfo->flood, uInfo->flood);
 507
 508         if(uInfo->joinflood)
 509                 while(uInfo->joinflood)
 510                         spamserv_delete_floodNode(&uInfo->joinflood, uInfo->joinflood);
 511
 512         dict_remove(connected_users_dict, uInfo->user->nick);
 513         free(uInfo);
 514 }
 515
 516 static void
 517 spamserv_new_user_func(struct userNode *user)
 518 {
 519         if(!IsLocal(user))
 520                 spamserv_create_user(user);
 521 }
 522
 523 static void
 524 spamserv_del_user_func(struct userNode *user, struct userNode *killer, UNUSED_ARG(const char *why))
 525 {
 526         struct userInfo *uInfo = get_userInfo(user->nick);
 527         struct killNode *kNode;
 528
 529         if(killer == spamserv)
 530         {
 531                 kNode = malloc(sizeof(struct killNode));
 532
 533                 if(!kNode)
 534                 {
 535                         log_module(SS_LOG, LOG_ERROR, "Couldn't allocate memory for killNode - nickname %s", user->nick);
 536                         spamserv_delete_user(uInfo);
 537                         return;
 538                 }
 539
 540                 if(uInfo->warnlevel > KILL_WARNLEVEL)
 541                         kNode->warnlevel = uInfo->warnlevel - KILL_WARNLEVEL;
 542                 else
 543                         kNode->warnlevel = 0;
 544
 545                 kNode->time = now;
 546
 547                 dict_insert(killed_users_dict, irc_ntoa(&user->ip), kNode);
 548         }
 549
 550         spamserv_delete_user(uInfo);
 551 }
 552
 553 static void
 554 spamserv_nick_change_func(struct userNode *user, const char *old_nick)
 555 {
 556         struct userInfo *uInfo = get_userInfo(old_nick);
 557
 558         dict_remove(connected_users_dict, old_nick);
 559         dict_insert(connected_users_dict, user->nick, uInfo);
 560 }
 561
 562 static int
 563 spamserv_user_join(struct modeNode *mNode)
 564 {
 565         struct chanNode *channel = mNode->channel;
 566         struct userNode *user = mNode->user;
 567         struct chanInfo *cInfo;
 568         struct userInfo *uInfo;
 569         struct floodNode *jfNode;
 570
 571         if(user->uplink->burst || !(cInfo = get_chanInfo(channel->name)) || !CHECK_JOINFLOOD(cInfo) || !(uInfo = get_userInfo(user->nick)))
 572                 return 0;
 573
 574
 575     if(!CHECK_CHANOPS(cInfo))
 576         {
 577                 //struct modeNode *mn = GetUserMode(channel, user);
 578                 //if(mn->modes & MODE_CHANOP)
 579                 //      return;
 580         if(check_user_level(channel, user, lvlGiveOps, 1, 0))
 581             return 0;
 582         }
 583
 584     if(!CHECK_VOICED(cInfo))
 585         {
 586         if(check_user_level(channel, user, lvlGiveVoice, 1, 0))
 587             return 0;
 588     }
 589
 590     if(cInfo->exceptlevel == 0)
 591         return 0;
 592     if(cInfo->exceptlevel < 501) {
 593       struct userData *uData;
 594        if((uData = GetChannelUser(channel->channel_info, user->handle_info)) && (uData->access >= cInfo->exceptlevel)) {
 595         return 0;
 596        }
 597     }
 598
 599         if(!(jfNode = uInfo->joinflood))
 600         {
 601                 spamserv_create_floodNode(channel, user, &uInfo->joinflood);
 602         }
 603         else
 604         {
 605                 for(; jfNode; jfNode = jfNode->next)
 606                         if(jfNode->channel == channel)
 607                                 break;
 608
 609                 if(!jfNode)
 610                 {
 611                         spamserv_create_floodNode(channel, user, &uInfo->joinflood);
 612                 }
 613                 else
 614                 {
 615                         jfNode->count++;
 616                         jfNode->time = now;
 617
 618                         if(jfNode->count > JOINFLOOD_MAX)
 619                         {
 620                                 char reason[MAXLEN];
 621
 622                                 spamserv_delete_floodNode(&uInfo->joinflood, jfNode);
 623                                 snprintf(reason, sizeof(reason), spamserv_conf.network_rules ? SSMSG_WARNING_RULES : SSMSG_WARNING, SSMSG_JOINFLOOD, spamserv_conf.network_rules);
 624                                 spamserv_punish(channel, user, JOINFLOOD_B_DURATION, reason, 1);
 625                         }
 626                 }
 627         }
 628
 629         return 0;
 630 }
 631
 632 static void
 633 spamserv_user_part(struct modeNode *mn, UNUSED_ARG(const char *reason))
 634 {
 635         struct userNode *user = mn->user;
 636         struct chanNode *channel = mn->channel;
 637         struct userInfo *uInfo;
 638         struct spamNode *sNode;
 639         struct floodNode *fNode;
 640
 641         if(user->dead || !get_chanInfo(channel->name) || !(uInfo = get_userInfo(user->nick)))
 642                 return;
 643
 644         if((sNode = uInfo->spam))
 645         {
 646                 for(; sNode; sNode = sNode->next)
 647                         if(sNode->channel == channel)
 648                                 break;
 649
 650                 if(sNode)
 651                         spamserv_delete_spamNode(uInfo, sNode);
 652         }
 653
 654         if((fNode = uInfo->flood))
 655         {
 656                 for(; fNode; fNode = fNode->next)
 657                         if(fNode->channel == channel)
 658                                 break;
 659
 660                 if(fNode)
 661                         spamserv_delete_floodNode(&uInfo->flood, fNode);
 662         }
 663 }
 664
 665 /***********************************************/
 666 /*                 Other Stuff                 */
 667 /***********************************************/
 668
 669 static void
 670 crc32_init(void)
 671 {
 672         unsigned long crc;
 673         int i, j;
 674
 675         for(i = 0; i < 256; i++)
 676         {
 677                 crc = i;
 678
 679                 for(j = 8; j > 0; j--)
 680                 {
 681                         if(crc & 1)
 682                         {
 683                                 crc = (crc >> 1) ^ 0xEDB88320L;
 684                         }
 685                         else
 686                         {
 687                                 crc >>= 1;
 688                         }
 689                 }
 690
 691                 crc_table[i] = crc;
 692         }
 693 }
 694
 695 static unsigned long
 696 crc32(const char *text)
 697 {
 698         register unsigned long crc = 0xFFFFFFFF;
 699         unsigned int c, i = 0;
 700
 701         while((c = (unsigned int)text[i++]) != 0)
 702                 crc = ((crc >> 8) & 0x00FFFFFF) ^ crc_table[(crc^c) & 0xFF];
 703
 704         return (crc^0xFFFFFFFF);
 705 }
 706
 707 static void
 708 timeq_flood(UNUSED_ARG(void *data))
 709 {
 710         dict_iterator_t         it;
 711         struct userInfo         *uInfo;
 712         struct floodNode        *fNode;
 713
 714         for(it = dict_first(connected_users_dict); it; it = iter_next(it))
 715         {
 716                 uInfo = iter_data(it);
 717
 718                 if(!(fNode = uInfo->flood))
 719                         continue;
 720
 721                 for(; fNode; fNode = fNode->next)
 722                 {
 723                         if(now - fNode->time > FLOOD_EXPIRE)
 724                         {
 725                                 if(!(--fNode->count))
 726                                         spamserv_delete_floodNode(&uInfo->flood, fNode);
 727                         }
 728                 }
 729         }
 730
 731         timeq_add(now + FLOOD_TIMEQ_FREQ, timeq_flood, NULL);
 732 }
 733
 734 static void
 735 timeq_joinflood(UNUSED_ARG(void *data))
 736 {
 737         dict_iterator_t it;
 738         struct userInfo *uInfo;
 739         struct floodNode *fNode;
 740
 741         for(it = dict_first(connected_users_dict); it; it = iter_next(it))
 742         {
 743                 uInfo = iter_data(it);
 744
 745                 if(!(fNode = uInfo->joinflood))
 746                         continue;
 747
 748                 for(; fNode; fNode = fNode->next)
 749                 {
 750                         if(now - fNode->time > JOINFLOOD_EXPIRE)
 751                         {
 752                                 if(!(--fNode->count))
 753                                         spamserv_delete_floodNode(&uInfo->joinflood, fNode);
 754                         }
 755                 }
 756         }
 757
 758         timeq_add(now + JOINFLOOD_TIMEQ_FREQ, timeq_joinflood, NULL);
 759 }
 760
 761 static void
 762 timeq_adv(UNUSED_ARG(void *data))
 763 {
 764         dict_iterator_t it;
 765         struct userInfo *uInfo;
 766
 767         for(it = dict_first(connected_users_dict); it; it = iter_next(it))
 768         {
 769                 uInfo = iter_data(it);
 770
 771                 if(uInfo->lastadv && uInfo->lastadv - now > ADV_EXPIRE)
 772                 {
 773                         uInfo->lastadv = 0;
 774                         uInfo->flags &= ~USER_ADV_WARNED;
 775                 }
 776         }
 777
 778         timeq_add(now + ADV_TIMEQ_FREQ, timeq_adv, NULL);
 779 }
 780
 781 static void
 782 timeq_warnlevel(UNUSED_ARG(void *data))
 783 {
 784         dict_iterator_t it;
 785         struct userInfo *uInfo;
 786
 787         for(it = dict_first(connected_users_dict); it; it = iter_next(it))
 788         {
 789                 uInfo = iter_data(it);
 790
 791                 if(uInfo->warnlevel > 0)
 792                         uInfo->warnlevel--;
 793         }
 794
 795         timeq_add(now + WARNLEVEL_TIMEQ_FREQ, timeq_warnlevel, NULL);
 796 }
 797
 798 static void
 799 timeq_kill(UNUSED_ARG(void *data))
 800 {
 801         dict_iterator_t it;
 802         struct killNode *kNode;
 803
 804         for(it = dict_first(killed_users_dict); it; it = iter_next(it))
 805         {
 806                 kNode = iter_data(it);
 807
 808                 if(kNode->time - now > KILL_EXPIRE)
 809                         free(kNode);
 810         }
 811
 812         timeq_add(now + KILL_TIMEQ_FREQ, timeq_kill, NULL);
 813 }
 814
 815 static int
 816 binary_option(char *name, unsigned long mask, struct userNode *user, struct chanNode *channel, int argc, char *argv[])
 817 {
 818         struct chanInfo *cInfo = get_chanInfo(channel->name);
 819         int value;
 820
 821         if(argc > 1)
 822         {
 823                 if(enabled_string(argv[1]))
 824                 {
 825                         cInfo->flags |= mask;
 826                         value = 1;
 827                 }
 828                 else if(disabled_string(argv[1]))
 829                 {
 830                     cInfo->flags &= ~mask;
 831                     value = 0;
 832                 }
 833                 else
 834                 {
 835                    spamserv_notice(user, "SSMSG_INVALID_BINARY", argv[1]);
 836                    return 0;
 837                 }
 838         }
 839         else
 840         {
 841                 value = (cInfo->flags & mask) ? 1 : 0;
 842         }
 843
 844         spamserv_notice(user, "SSMSG_STRING_VALUE", name, value ? "Enabled." : "Disabled.");
 845         return 1;
 846 }
 847
 848 struct valueData
 849 {
 850         char *description;
 851         char value;
 852         int  oper_only : 1;
 853 };
 854
 855 static int
 856 multiple_option(char *name, char *description, enum channelinfo info, struct valueData *values, int count, struct userNode *user, struct chanNode *channel, int argc, char *argv[])
 857 {
 858         struct chanInfo *cInfo = get_chanInfo(channel->name);
 859         int index;
 860
 861         if(argc > 1)
 862         {
 863                 index = atoi(argv[1]);
 864
 865                 if(index < 0 || index >= count)
 866                 {
 867                         spamserv_notice(user, "SSMSG_INVALID_NUM_SET", index, description);
 868
 869             for(index = 0; index < count; index++)
 870                 spamserv_notice(user, "SSMSG_NUMERIC_VALUE", name, index, values[index].description);
 871
 872                         return 0;
 873                 }
 874
 875                 if(values[index].oper_only && !IsOper(user))
 876                 {
 877                         spamserv_notice(user, "SSMSG_MUST_BE_OPER");
 878                         return 0;
 879                 }
 880
 881                 cInfo->info[info] = values[index].value;
 882         }
 883         else
 884         {
 885                 for(index = 0; index < count && cInfo->info[info] != values[index].value; index++);
 886         }
 887
 888         spamserv_notice(user, "SSMSG_NUMERIC_VALUE", name, index, values[index].description);
 889         return 1;
 890 }
 891
 892 static int
 893 show_exceptions(struct userNode *user, struct chanInfo *cInfo)
 894 {
 895         struct helpfile_table table;
 896         unsigned int i;
 897
 898         if(!cInfo->exceptions->used)
 899         {
 900                 spamserv_notice(user, "SSMSG_NO_EXCEPTIONS");
 901                 return 0;
 902         }
 903
 904         spamserv_notice(user, "SSMSG_EXCEPTION_LIST");
 905
 906         table.length = 0;
 907         table.width = 1;
 908         table.flags = TABLE_REPEAT_ROWS | TABLE_NO_FREE | TABLE_NO_HEADERS;
 909         table.contents = alloca(cInfo->exceptions->used * sizeof(*table.contents));
 910
 911         for(i = 0; i < cInfo->exceptions->used; i++)
 912         {
 913                 table.contents[table.length] = alloca(table.width * sizeof(**table.contents));
 914                 table.contents[table.length][0] = cInfo->exceptions->list[i];
 915                 table.length++;
 916         }
 917
 918         table_send(spamserv, user->nick, 0, NULL, table);
 919
 920         return 1;
 921 }
 922
 923 static void
 924 show_memory_usage(struct userNode *user)
 925 {
 926         dict_iterator_t it;
 927         struct helpfile_table table;
 928         struct chanInfo *cInfo;
 929         struct userInfo *uInfo;
 930         struct spamNode *sNode;
 931         struct floodNode *fNode;
 932         double channel_size = 0, user_size, size;
 933         unsigned int spamcount = 0, floodcount = 0, i, j;
 934         char buffer[64];
 935
 936         for(it = dict_first(registered_channels_dict); it; it = iter_next(it))
 937         {
 938                 cInfo = iter_data(it);
 939
 940                 if(!cInfo->exceptions->used)
 941                         continue;
 942
 943                 for(i = 0; i < cInfo->exceptions->used; i++)
 944                         channel_size += strlen(cInfo->exceptions->list[i]) * sizeof(char);
 945         }
 946
 947         for(it = dict_first(connected_users_dict); it; it = iter_next(it))
 948         {
 949                 uInfo = iter_data(it);
 950
 951                 for(sNode = uInfo->spam; sNode; sNode = sNode->next, spamcount++);
 952                 for(fNode = uInfo->flood; fNode; fNode = fNode->next, floodcount++);
 953                 for(fNode = uInfo->joinflood; fNode; fNode = fNode->next, floodcount++);
 954         }
 955
 956         channel_size += dict_size(registered_channels_dict) * sizeof(struct chanInfo);
 957
 958         user_size = dict_size(connected_users_dict) * sizeof(struct userInfo) +
 959                                 dict_size(killed_users_dict) * sizeof(struct killNode) +
 960                                 spamcount * sizeof(struct spamNode)     +
 961                                 floodcount *  sizeof(struct floodNode);
 962
 963         size = channel_size + user_size;
 964
 965         ss_reply("SSMSG_STATUS_MEMORY");
 966
 967         table.length = 3;
 968         table.width = 4;
 969         table.flags = TABLE_NO_FREE | TABLE_NO_HEADERS | TABLE_PAD_LEFT;
 970         table.contents = calloc(table.length, sizeof(char**));
 971
 972         // chanInfo
 973         table.contents[0] = calloc(table.width, sizeof(char*));
 974         snprintf(buffer, sizeof(buffer), "Channel Memory Usage:");
 975         table.contents[0][0] = strdup(buffer);
 976         snprintf(buffer, sizeof(buffer), " %g Byte; ", channel_size);
 977         table.contents[0][1] = strdup(buffer);
 978         snprintf(buffer, sizeof(buffer), "%g KiloByte; ", channel_size / 1024);
 979         table.contents[0][2] = strdup(buffer);
 980         snprintf(buffer, sizeof(buffer), "%g MegaByte", channel_size / 1024 / 1024);
 981         table.contents[0][3] = strdup(buffer);
 982
 983         // userInfo
 984         table.contents[1] = calloc(table.width, sizeof(char*));
 985         snprintf(buffer, sizeof(buffer), "User Memory Usage   :");
 986         table.contents[1][0] = strdup(buffer);
 987         snprintf(buffer, sizeof(buffer), " %g Byte; ", user_size);
 988         table.contents[1][1] = strdup(buffer);
 989         snprintf(buffer, sizeof(buffer), "%g KiloByte; ", user_size / 1024);
 990         table.contents[1][2] = strdup(buffer);
 991         snprintf(buffer, sizeof(buffer), "%g MegaByte", user_size / 1024 / 1024);
 992         table.contents[1][3] = strdup(buffer);
 993
 994         // total memory usage
 995         table.contents[2] = calloc(table.width, sizeof(char*));
 996         snprintf(buffer, sizeof(buffer), "Total Memory Usage  :");
 997         table.contents[2][0] = strdup(buffer);
 998         snprintf(buffer, sizeof(buffer), " %g Byte; ", size);
 999         table.contents[2][1] = strdup(buffer);
1000         snprintf(buffer, sizeof(buffer), "%g KiloByte; ", size / 1024);
1001         table.contents[2][2] = strdup(buffer);
1002         snprintf(buffer, sizeof(buffer), "%g MegaByte", size / 1024 / 1024);
1003         table.contents[2][3] = strdup(buffer);
1004
1005         table_send(spamserv, user->nick, 0, NULL, table);
1006
1007         for(i = 0; i < table.length; i++)
1008         {
1009                 for(j = 0; j < table.width; j++)
1010                         free((char*)table.contents[i][j]);
1011
1012         free(table.contents[i]);
1013         }
1014
1015         free(table.contents);
1016 }
1017
1018 static void
1019 show_registered_channels(struct userNode *user)
1020 {
1021         struct helpfile_table table;
1022         dict_iterator_t it;
1023
1024         spamserv_notice(user, "SSMSG_STATUS_CHANNEL_LIST");
1025
1026         if(!dict_size(registered_channels_dict))
1027         {
1028                 spamserv_notice(user, "SSMSG_STATUS_NO_CHANNEL");
1029                 return;
1030         }
1031
1032         table.length = 0;
1033         table.width = 1;
1034         table.flags = TABLE_REPEAT_ROWS | TABLE_NO_FREE | TABLE_NO_HEADERS;
1035         table.contents = alloca(dict_size(registered_channels_dict) * sizeof(*table.contents));
1036
1037         for(it = dict_first(registered_channels_dict); it; it = iter_next(it))
1038         {
1039                 struct chanInfo *cInfo = iter_data(it);
1040
1041                 table.contents[table.length] = alloca(table.width * sizeof(**table.contents));
1042                 table.contents[table.length][0] = cInfo->channel->name;
1043                 table.length++;
1044         }
1045
1046         table_send(spamserv, user->nick, 0, NULL, table);
1047 }
1048
1049 /***********************************************/
1050 /*                SpamServ_Func                */
1051 /***********************************************/
1052
1053 static
1054 SPAMSERV_FUNC(cmd_register)
1055 {
1056         struct chanInfo *cInfo;
1057         char reason[MAXLEN];
1058
1059         if(!channel || !channel->channel_info)
1060         {
1061                 ss_reply("SSMSG_NOT_REGISTERED_CS", channel->name);
1062                 return 0;
1063         }
1064
1065         if(get_chanInfo(channel->name))
1066         {
1067                 ss_reply("SSMSG_ALREADY_REGISTERED", channel->name);
1068                 return 0;
1069         }
1070
1071         if(IsSuspended(channel->channel_info))
1072         {
1073                 ss_reply("SSMSG_SUSPENDED_CS", channel->name, "register");
1074                 return 0;
1075         }
1076
1077         if(channel == spamserv_conf.debug_channel)
1078         {
1079                 ss_reply("SSMSG_DEBUG_CHAN");
1080                 return 0;
1081         }
1082
1083         if(!(cInfo = spamserv_register_channel(channel, spamserv_conf.global_exceptions, CHAN_FLAGS_DEFAULT , CHAN_INFO_DEFAULT)))
1084         {
1085                 ss_reply("SSMSG_NO_REGISTER", channel->name);
1086                 return 0;
1087         }
1088
1089         spamserv_join_channel(cInfo->channel);
1090
1091         snprintf(reason, sizeof(reason), "%s (channel %s) registered by %s.", spamserv->nick, channel->name, user->handle_info->handle);
1092         global_message(MESSAGE_RECIPIENT_OPERS | MESSAGE_RECIPIENT_HELPERS, reason);
1093         ss_reply("SSMSG_REG_SUCCESS", channel->name);
1094
1095         return 1;
1096 }
1097
1098 static
1099 SPAMSERV_FUNC(cmd_unregister)
1100 {
1101         struct chanInfo *cInfo;
1102         struct chanData *cData;
1103         struct userData *uData;
1104         char reason[MAXLEN];
1105
1106         if(!channel || !(cData = channel->channel_info) || !(cInfo = get_chanInfo(channel->name)))
1107         {
1108                 ss_reply("SSMSG_NOT_REGISTERED", channel->name);
1109                 return 0;
1110         }
1111
1112         if(!(uData = GetChannelUser(cData, user->handle_info)) || (uData->access < UL_OWNER))
1113         {
1114         ss_reply("SSMSG_NO_ACCESS");
1115         return 0;
1116         }
1117
1118         if(!IsHelping(user))
1119         {
1120         if(IsSuspended(cData))
1121         {
1122             ss_reply("SSMSG_SUSPENDED_CS", channel->name, "unregister");
1123             return 0;
1124         }
1125
1126                 if(argc < 2 || strcasecmp(argv[1], "CONFIRM"))
1127                 {
1128                         ss_reply("SSMSG_CONFIRM_UNREG");
1129                         return 0;
1130                 }
1131         }
1132
1133         if(!CHECK_SUSPENDED(cInfo))
1134         {
1135                 snprintf(reason, sizeof(reason), "%s unregistered by %s.", spamserv->nick, user->handle_info->handle);
1136                 spamserv_part_channel(channel, reason);
1137         }
1138
1139         spamserv_unregister_channel(cInfo);
1140
1141         snprintf(reason, sizeof(reason), "%s (channel %s) unregistered by %s.", spamserv->nick, channel->name, user->handle_info->handle);
1142         global_message(MESSAGE_RECIPIENT_OPERS | MESSAGE_RECIPIENT_HELPERS, reason);
1143         ss_reply("SSMSG_UNREG_SUCCESS", channel->name);
1144
1145         return 1;
1146 }
1147
1148 static
1149 SPAMSERV_FUNC(cmd_status)
1150 {
1151         ss_reply("SSMSG_STATUS");
1152         ss_reply("SSMSG_STATUS_USERS", dict_size(connected_users_dict));
1153         ss_reply("SSMSG_STATUS_CHANNELS", dict_size(registered_channels_dict));
1154
1155         if(IsOper(user) && argc > 1)
1156         {
1157                 if(!irccasecmp(argv[1], "memory"))
1158                         show_memory_usage(user);
1159                 else if(!irccasecmp(argv[1], "channels"))
1160                         show_registered_channels(user);
1161         }
1162
1163         return 1;
1164 }
1165
1166 static
1167 SPAMSERV_FUNC(cmd_addexception)
1168 {
1169         struct chanInfo *cInfo = get_chanInfo(channel->name);
1170         struct userData *uData;
1171         unsigned int i;
1172
1173         if(!cInfo || !channel->channel_info)
1174         {
1175                 ss_reply("SSMSG_NOT_REGISTERED", channel->name);
1176                 return 0;
1177         }
1178
1179         if(CHECK_SUSPENDED(cInfo))
1180         {
1181                 ss_reply("SSMSG_SUSPENDED", channel->name);
1182                 return 0;
1183         }
1184
1185         if(!(uData = GetChannelUser(channel->channel_info, user->handle_info)) || (uData->access < 400))
1186         {
1187                 ss_reply("SSMSG_NO_ACCESS");
1188                 return 0;
1189         }
1190
1191         if(argc < 2)
1192                 return show_exceptions(user, cInfo);
1193
1194         if(cInfo->exceptions->used == spamserv_conf.exception_max && !IsOper(user))
1195         {
1196                 ss_reply("SSMSG_EXCEPTION_MAX", spamserv_conf.exception_max);
1197                 return 0;
1198         }
1199
1200         if(strlen(argv[1]) < spamserv_conf.exception_min_len)
1201         {
1202                 ss_reply("SSMSG_EXCEPTION_TOO_SHORT", spamserv_conf.exception_min_len);
1203                 return 0;
1204         }
1205         else if(strlen(argv[1]) > spamserv_conf.exception_max_len)
1206         {
1207                 ss_reply("SSMSG_EXCEPTION_TOO_LONG", spamserv_conf.exception_max_len);
1208                 return 0;
1209         }
1210
1211         for(i = 0; i < cInfo->exceptions->used; i++)
1212         {
1213                 if(!irccasecmp(argv[1], cInfo->exceptions->list[i]))
1214                 {
1215                         ss_reply("SSMSG_EXCEPTION_IN_LIST", argv[1]);
1216                         return 0;
1217                 }
1218         }
1219
1220         string_list_append(cInfo->exceptions, strdup(argv[1]));
1221         ss_reply("SSMSG_EXCEPTION_ADDED", argv[1]);
1222
1223         return 1;
1224 }
1225
1226 static
1227 SPAMSERV_FUNC(cmd_delexception)
1228 {
1229         struct chanInfo *cInfo = get_chanInfo(channel->name);
1230         struct userData *uData;
1231         unsigned int i;
1232         int found = -1;
1233
1234         if(!cInfo || !channel->channel_info)
1235         {
1236                 ss_reply("SSMSG_NOT_REGISTERED", channel->name);
1237                 return 0;
1238         }
1239
1240         if(CHECK_SUSPENDED(cInfo))
1241         {
1242                 ss_reply("SSMSG_SUSPENDED", channel->name);
1243                 return 0;
1244         }
1245
1246         if(!(uData = GetChannelUser(channel->channel_info, user->handle_info)) || (uData->access < 400))
1247         {
1248                 ss_reply("SSMSG_NO_ACCESS");
1249                 return 0;
1250         }
1251
1252         if(argc < 2)
1253                 return show_exceptions(user, cInfo);
1254
1255         for(i = 0; i < cInfo->exceptions->used; i++)
1256         {
1257                 if(!irccasecmp(argv[1], cInfo->exceptions->list[i]))
1258                 {
1259                         found = i;
1260                         break;
1261                 }
1262         }
1263
1264         if(found == -1)
1265         {
1266                 ss_reply("SSMSG_NO_SUCH_EXCEPTION", argv[1]);
1267                 return 0;
1268         }
1269
1270         string_list_delete(cInfo->exceptions, i);
1271         ss_reply("SSMSG_EXCEPTION_DELETED", argv[1]);
1272
1273         return 1;
1274 }
1275
1276 static
1277 SPAMSERV_FUNC(cmd_set)
1278 {
1279         struct chanInfo *cInfo = get_chanInfo(channel->name);
1280         struct svccmd   *subcmd;
1281         char cmd_name[MAXLEN];
1282         unsigned int i;
1283
1284         if(!cInfo)
1285         {
1286                 ss_reply("SSMSG_NOT_REGISTERED", channel->name);
1287                 return 0;
1288         }
1289
1290         if(CHECK_SUSPENDED(cInfo))
1291         {
1292                 ss_reply("SSMSG_SUSPENDED", channel->name);
1293                 return 0;
1294         }
1295
1296     if(!check_user_level(channel,user,lvlSetters,1,0))
1297         {
1298                 ss_reply("SSMSG_NO_ACCESS");
1299                 return 0;
1300         }
1301
1302         if(argc < 2)
1303         {
1304                 ss_reply("SSMSG_CHANNEL_OPTIONS");
1305
1306                 for(i = 0; i < SET_SUBCMDS_SIZE; i++)
1307                 {
1308                         sprintf(cmd_name, "%s %s", cmd->name, set_subcommands[i]);
1309
1310                         if((subcmd = dict_find(cmd->parent->commands, cmd_name, NULL)))
1311                                 subcmd->command->func(user, channel, 1, argv + 1, subcmd);
1312                 }
1313
1314                 return 1;
1315         }
1316
1317         sprintf(cmd_name, "%s %s", cmd->name, argv[1]);
1318         subcmd = dict_find(cmd->parent->commands, cmd_name, NULL);
1319
1320         if(!subcmd)
1321         {
1322                 reply("SSMSG_INVALID_OPTION", argv[1], argv[0]);
1323                 return 0;
1324         }
1325
1326         return subcmd->command->func(user, channel, argc - 1, argv + 1, subcmd);
1327 }
1328
1329 static
1330 SPAMSERV_FUNC(opt_spamlimit)
1331 {
1332         struct valueData values[] =
1333         {
1334                 {"Users may send the same message $b2$b times.", 'a', 0},
1335                 {"Users may send the same message $b3$b times.", 'b', 0},
1336                 {"Users may send the same message $b4$b times.", 'c', 0},
1337                 {"Users may send the same message $b5$b times.", 'd', 0},
1338                 {"Users may send the same message $b6$b times.", 'e', 0}
1339         };
1340
1341         MULTIPLE_OPTION("SpamLimit     ", "SpamLimit", ci_SpamLimit);
1342 }
1343
1344 static
1345 SPAMSERV_FUNC(opt_advreaction)
1346 {
1347         struct valueData values[] =
1348         {
1349                 {"Kick on disallowed advertising.", 'k', 0},
1350                 {"Kickban on disallowed advertising.", 'b', 0},
1351                 {"Short timed ban on disallowed advertising.", 's', 0},
1352                 {"Long timed ban on disallowed advertising.", 'l', 0},
1353                 {"Kill on disallowed advertising.", 'd', 1}
1354         };
1355
1356         MULTIPLE_OPTION("AdvReaction   ", "AdvReaction", ci_AdvReaction);
1357 }
1358
1359 static
1360 SPAMSERV_FUNC(opt_warnreaction)
1361 {
1362         struct valueData values[] =
1363         {
1364                 {"Kick after warning.", 'k', 0},
1365                 {"Kickban after warning.", 'b', 0},
1366                 {"Short timed ban after warning.", 's', 0},
1367                 {"Long timed ban after warning.", 'l', 0},
1368                 {"Kill after warning.", 'd', 1}
1369         };
1370
1371         MULTIPLE_OPTION("WarnReaction  ", "WarnReaction", ci_WarnReaction);
1372 }
1373
1374 static
1375 SPAMSERV_FUNC(opt_advscan)
1376 {
1377         BINARY_OPTION("AdvScan       ", CHAN_ADV_SCAN);
1378 }
1379
1380 static
1381 SPAMSERV_FUNC(opt_spamscan)
1382 {
1383         BINARY_OPTION("SpamScan      ", CHAN_SPAMSCAN);
1384 }
1385
1386 static
1387 SPAMSERV_FUNC(opt_floodscan)
1388 {
1389         BINARY_OPTION("FloodScan     ", CHAN_FLOODSCAN);
1390 }
1391
1392 static
1393 SPAMSERV_FUNC(opt_joinflood)
1394 {
1395         BINARY_OPTION("JoinFloodScan ", CHAN_JOINFLOOD);
1396 }
1397
1398 static
1399 SPAMSERV_FUNC(opt_scanops)
1400 {
1401         BINARY_OPTION("ScanChanOps   ", CHAN_SCAN_CHANOPS);
1402 }
1403
1404 static
1405 SPAMSERV_FUNC(opt_scanvoiced)
1406 {
1407         BINARY_OPTION("ScanVoiced    ", CHAN_SCAN_VOICED);
1408 }
1409
1410 static
1411 SPAMSERV_FUNC(opt_exceptlevel)
1412 {
1413  struct chanInfo *cInfo = get_chanInfo(channel->name);
1414  struct userData *uData;
1415  int index;
1416  if(argc > 1)
1417         {
1418                 index = atoi(argv[1]);
1419                 if(index < 1 || index > 501)
1420                 {
1421                         spamserv_notice(user, "SSMSG_INVALID_NUM_SET", index, "ExceptLevel");
1422                         return 0;
1423                 }
1424         if(!(uData = GetChannelUser(channel->channel_info, user->handle_info)) || (uData->access < cInfo->exceptlevel || index > uData->access))
1425         {
1426             ss_reply("SSMSG_NO_ACCESS");
1427             return 0;
1428         }
1429         cInfo->exceptlevel=index;
1430     } else {
1431      index=cInfo->exceptlevel;
1432     }
1433     spamserv_notice(user, "SSMSG_EASYNUMERIC_VALUE", "ExceptLevel   ", index);
1434     return 1;
1435 }
1436
1437 static void
1438 to_lower(char *message)
1439 {
1440         unsigned int i, diff = 'a' - 'A';
1441
1442         for(i = 0; i < strlen(message); i++)
1443         {
1444                 if((message[i] >= 'A') && (message[i] <= 'Z'))
1445                         message[i] = message[i] + diff;
1446         }
1447 }
1448
1449 static char *
1450 strip_mirc_codes(char *text)
1451 {
1452         // taken from xchat and modified
1453         int nc = 0, i = 0, col = 0, len = strlen(text);
1454         static char new_str[MAXLEN];
1455
1456         while(len > 0)
1457         {
1458                 if((col && isdigit(*text) && nc < 2) ||
1459                         (col && *text == ',' && isdigit(*(text + 1)) && nc < 3))
1460                 {
1461                         nc++;
1462
1463                         if(*text == ',')
1464                                 nc = 0;
1465                 }
1466                 else
1467                 {
1468                         col = 0;
1469
1470                         switch(*text)
1471                         {
1472                         case '\003':
1473                                 col = 1;
1474                                 nc = 0;
1475                                 break;
1476                         case '\002':
1477                         case '\022':
1478                         case '\026':
1479                         case '\031':
1480                         case '\037':
1481                                 break;
1482                         default:
1483                                 new_str[i] = *text;
1484                                 i++;
1485                         }
1486                 }
1487
1488                 text++;
1489                 len--;
1490         }
1491
1492         new_str[i] = '\0';
1493
1494         return new_str;
1495 }
1496
1497 static int
1498 is_in_exception_list(struct chanInfo *cInfo, char *message)
1499 {
1500         unsigned int i;
1501
1502         for(i = 0; i < cInfo->exceptions->used; i++)
1503                 if(strstr(message, cInfo->exceptions->list[i]))
1504                         return 1;
1505
1506         return 0;
1507 }
1508
1509 static int
1510 check_advertising(struct chanInfo *cInfo, char *message)
1511 {
1512         unsigned int i = 0;
1513
1514         if(spamserv_conf.strip_mirc_codes)
1515                 message = strip_mirc_codes(message);
1516
1517         if(is_in_exception_list(cInfo, message))
1518                 return 0;
1519
1520         while(message[i] != 0)
1521         {
1522                 if(message[i] == '#')
1523                 {
1524                         char channelname[CHANNELLEN];
1525                         unsigned int j = 0;
1526
1527                         if(!spamserv_conf.adv_chan_must_exist)
1528                                 return 1;
1529
1530                         /* only return 1, if the channel does exist */
1531
1532                         while((message[i] != 0) && (message[i] != ' '))
1533                         {
1534                                 channelname[j] = message[i];
1535                                 i++;
1536                                 j++;
1537                         }
1538
1539                         channelname[j] = '\0';
1540
1541                         if(GetChannel(channelname))
1542                                 return 1;
1543                 }
1544                 else if((message[i] == 'w') && (message[i+1] == 'w') && (message[i+2] == 'w') && (message[i+3] == '.'))
1545                         return 1;
1546                 else if((message[i] == 'h') && (message[i+1] == 't') && (message[i+2] == 't') && (message[i+3] == 'p') && (message[i+4] == ':'))
1547                         return 1;
1548                 else if((message[i] == 'f') && (message[i+1] == 't') && (message[i+2] == 'p') && ((message[i+3] == '.') || (message[i+3] == ':')))
1549                         return 1;
1550
1551                 i++;
1552         }
1553
1554         return 0;
1555 }
1556
1557 struct banData *add_channel_ban(struct chanData *channel, const char *mask, char *owner, unsigned long set, unsigned long triggered, unsigned long expires, char *reason);
1558
1559 static void
1560 spamserv_punish(struct chanNode *channel, struct userNode *user, time_t expires, char *reason, int ban)
1561 {
1562         if(ban)
1563         {
1564                 struct mod_chanmode change;
1565                 char *hostmask = generate_hostmask(user, GENMASK_STRICT_HOST | GENMASK_ANY_IDENT);
1566
1567                 sanitize_ircmask(hostmask);
1568
1569                 if(expires)
1570                         add_channel_ban(channel->channel_info, hostmask, spamserv->nick, now, now, now + expires, reason);
1571
1572                 mod_chanmode_init(&change);
1573                 change.argc = 1;
1574                 change.args[0].mode = MODE_BAN;
1575       change.args[0].u.hostmask = hostmask;
1576                 mod_chanmode_announce(spamserv, channel, &change);
1577
1578                 free(hostmask);
1579
1580                 spamserv_debug(SSMSG_DEBUG_BAN, user->nick, channel->name, reason);
1581         }
1582         else
1583                 spamserv_debug(SSMSG_DEBUG_KICK, user->nick, channel->name, reason);
1584
1585         KickChannelUser(user, channel, spamserv, reason);
1586 }
1587
1588 void
1589 spamserv_channel_message(struct chanNode *channel, struct userNode *user, char *text)
1590 {
1591         struct chanInfo *cInfo;
1592         struct userInfo *uInfo;
1593         struct spamNode *sNode;
1594         struct floodNode *fNode;
1595         unsigned int violation = 0;
1596         char reason[MAXLEN];
1597
1598         /* make sure: spamserv is not disabled; srvx is running; spamserv is in the chan; chan is regged, user does exist */
1599         if(!spamserv || quit_services || !GetUserMode(channel, spamserv) || !(cInfo = get_chanInfo(channel->name)) || !(uInfo = get_userInfo(user->nick)))
1600                 return;
1601
1602         if(!CHECK_CHANOPS(cInfo))
1603         {
1604                 struct modeNode *mn = GetUserMode(channel, user);
1605                 if(mn && mn->modes & MODE_CHANOP)
1606                         return;
1607         //if(check_user_level(channel, user, lvlGiveOps, 1, 0))
1608         //    return;
1609         }
1610
1611         if(!CHECK_VOICED(cInfo))
1612         {
1613                 struct modeNode *mn = GetUserMode(channel, user);
1614                 if(mn && (mn->modes & MODE_VOICE) && !(mn->modes & MODE_CHANOP))
1615                         return;
1616         }
1617
1618     if(cInfo->exceptlevel == 0)
1619         return;
1620     if(cInfo->exceptlevel < 501) {
1621       struct userData *uData;
1622        if((uData = GetChannelUser(channel->channel_info, user->handle_info)) && (uData->access >= cInfo->exceptlevel)) {
1623         return;
1624        }
1625     }
1626
1627         to_lower(text);
1628
1629         if(CHECK_SPAM(cInfo))
1630         {
1631                 if(!(sNode = uInfo->spam))
1632                 {
1633                         spamserv_create_spamNode(channel, uInfo, text);
1634                 }
1635                 else
1636                 {
1637                         for(; sNode; sNode = sNode->next)
1638                                 if(sNode->channel == channel)
1639                                         break;
1640
1641                         if(!sNode)
1642                         {
1643                                 spamserv_create_spamNode(channel, uInfo, text);
1644                         }
1645                         else
1646                         {
1647                                 unsigned long crc = crc32(text);
1648
1649                                 if(crc == sNode->crc32)
1650                                 {
1651                                         unsigned int spamlimit = 2;
1652                                         sNode->count++;
1653
1654                                         switch(cInfo->info[ci_SpamLimit])
1655                                         {
1656                                                 case 'a': spamlimit = 2; break;
1657                                                 case 'b': spamlimit = 3; break;
1658                                                 case 'c': spamlimit = 4; break;
1659                                                 case 'd': spamlimit = 5; break;
1660                                                 case 'e': spamlimit = 6; break;
1661                                         }
1662
1663                                         if(sNode->count == spamlimit)
1664                                         {
1665                                                 uInfo->warnlevel += SPAM_WARNLEVEL;
1666
1667                                                 if(uInfo->warnlevel < MAX_WARNLEVEL)
1668                                                         spamserv_notice(user, spamserv_conf.network_rules ? SSMSG_WARNING_RULES : SSMSG_WARNING, SSMSG_SPAM, spamserv_conf.network_rules);
1669                                         }
1670                                         else if(sNode->count > spamlimit)
1671                                         {
1672                                                 switch(cInfo->info[ci_WarnReaction])
1673                                                 {
1674                                                         case 'k': uInfo->flags |= USER_KICK; break;
1675                                                         case 'b': uInfo->flags |= USER_KICKBAN; break;
1676                                                         case 's': uInfo->flags |= USER_SHORT_TBAN; break;
1677                                                         case 'l': uInfo->flags |= USER_LONG_TBAN; break;
1678                                                         case 'd': uInfo->flags |= CHECK_KILLED(uInfo) ? USER_GLINE : USER_KILL; break;
1679                                                 }
1680
1681                                                 spamserv_delete_spamNode(uInfo, sNode);
1682                                                 uInfo->warnlevel += SPAM_WARNLEVEL;
1683                                                 violation = 1;
1684                                         }
1685                                 }
1686                                 else
1687                                 {
1688                                         sNode->crc32 = crc;
1689                                         sNode->count = 1;
1690                                 }
1691                         }
1692                 }
1693         }
1694
1695         if(CHECK_FLOOD(cInfo))
1696         {
1697                 if(!(fNode = uInfo->flood))
1698                 {
1699                         spamserv_create_floodNode(channel, user, &uInfo->flood);
1700                 }
1701                 else
1702                 {
1703                         for(; fNode; fNode = fNode->next)
1704                                 if(fNode->channel == channel)
1705                                         break;
1706
1707                         if(!fNode)
1708                         {
1709                                 spamserv_create_floodNode(channel, user, &uInfo->flood);
1710                         }
1711                         else
1712                         {
1713                                 if(((now - fNode->time) < FLOOD_EXPIRE))
1714                                 {
1715                                         fNode->count++;
1716
1717                                         if(fNode->count == FLOOD_MAX_LINES - 1)
1718                                         {
1719                                                 uInfo->warnlevel += FLOOD_WARNLEVEL;
1720
1721                                                 if(uInfo->warnlevel < MAX_WARNLEVEL)
1722                                                         spamserv_notice(user, spamserv_conf.network_rules ? SSMSG_WARNING_RULES : SSMSG_WARNING, SSMSG_FLOOD, spamserv_conf.network_rules);
1723                                         }
1724                                         else if(fNode->count > FLOOD_MAX_LINES)
1725                                         {
1726                                                 switch(cInfo->info[ci_WarnReaction])
1727                                                 {
1728                                                         case 'k': uInfo->flags |= USER_KICK; break;
1729                                                         case 'b': uInfo->flags |= USER_KICKBAN; break;
1730                                                         case 's': uInfo->flags |= USER_SHORT_TBAN; break;
1731                                                         case 'l': uInfo->flags |= USER_LONG_TBAN; break;
1732                                                         case 'd': uInfo->flags |= CHECK_KILLED(uInfo) ? USER_GLINE : USER_KILL; break;
1733                                                 }
1734
1735                                                 spamserv_delete_floodNode(&uInfo->flood, fNode);
1736                                                 uInfo->warnlevel += FLOOD_WARNLEVEL;
1737                                                 violation = 2;
1738                                         }
1739                                 }
1740
1741                                 fNode->time = now;
1742                         }
1743                 }
1744         }
1745
1746         if(CHECK_ADV(cInfo) && check_advertising(cInfo, text))
1747         {
1748                 if(CHECK_ADV_WARNED(uInfo))
1749                 {
1750                         switch(cInfo->info[ci_AdvReaction])
1751                         {
1752                                 case 'k': uInfo->flags |= USER_KICK; break;
1753                                 case 'b': uInfo->flags |= USER_KICKBAN; break;
1754                                 case 's': uInfo->flags |= USER_SHORT_TBAN; break;
1755                                 case 'l': uInfo->flags |= USER_LONG_TBAN; break;
1756                                 case 'd': uInfo->flags |= CHECK_KILLED(uInfo) ? USER_GLINE : USER_KILL; break;
1757                         }
1758
1759                         uInfo->warnlevel += ADV_WARNLEVEL;
1760                         violation = 3;
1761                 }
1762                 else
1763                 {
1764                         uInfo->flags |= USER_ADV_WARNED;
1765                         uInfo->lastadv = now;
1766                         uInfo->warnlevel += ADV_WARNLEVEL;
1767
1768                         if(uInfo->warnlevel < MAX_WARNLEVEL)
1769                                 spamserv_notice(user, spamserv_conf.network_rules ? SSMSG_WARNING_RULES : SSMSG_WARNING, SSMSG_ADV, spamserv_conf.network_rules);
1770                 }
1771         }
1772
1773         if(!CHECK_WARNED(uInfo) && !CHECK_KILL(uInfo) && !CHECK_GLINE(uInfo) && uInfo->warnlevel == MAX_WARNLEVEL)
1774         {
1775                 uInfo->flags |= USER_WARNED;
1776                 snprintf(reason, sizeof(reason), spamserv_conf.network_rules ? SSMSG_WARNING_RULES_2 : SSMSG_WARNING_2, spamserv_conf.network_rules);
1777                 irc_notice(spamserv, user->numeric, reason);
1778                 irc_privmsg(spamserv, user->numeric, reason);
1779         }
1780         else if(uInfo->warnlevel > MAX_WARNLEVEL)
1781         {
1782                 if(CHECK_KILLED(uInfo))
1783                         uInfo->flags |= USER_GLINE;
1784                 else
1785                         uInfo->flags |= USER_KILL;
1786
1787                 violation = 5;
1788         }
1789
1790         if(!violation)
1791                 return;
1792
1793         switch(violation)
1794         {
1795                 case 1: snprintf(reason, sizeof(reason), spamserv_conf.network_rules ? SSMSG_WARNING_RULES : SSMSG_WARNING, SSMSG_SPAM, spamserv_conf.network_rules); break;
1796                 case 2: snprintf(reason, sizeof(reason), spamserv_conf.network_rules ? SSMSG_WARNING_RULES : SSMSG_WARNING, SSMSG_FLOOD, spamserv_conf.network_rules); break;
1797                 case 3: snprintf(reason, sizeof(reason), spamserv_conf.network_rules ? SSMSG_WARNING_RULES : SSMSG_WARNING, SSMSG_ADV, spamserv_conf.network_rules); break;
1798                 default: snprintf(reason, sizeof(reason), spamserv_conf.network_rules ? SSMSG_WARNING_RULES_2 : SSMSG_WARNING_2, spamserv_conf.network_rules); break;
1799         }
1800
1801         if(CHECK_GLINE(uInfo))
1802         {
1803                 int size = strlen(user->hostname) + 3;
1804                 char *mask = alloca(size);
1805                 snprintf(mask, size, "*@%s", user->hostname);
1806                 gline_add(spamserv->nick, mask, spamserv_conf.gline_duration, reason, now, now, 0, 1);
1807                 spamserv_debug(SSMSG_DEBUG_GLINE, user->nick, user->hostname, channel->name);
1808         }
1809         else if(CHECK_KILL(uInfo))
1810         {
1811                 DelUser(user, spamserv, 1, reason);
1812                 spamserv_debug(SSMSG_DEBUG_KILL, user->nick, channel->name);
1813         }
1814         else if(CHECK_LONG_TBAN(uInfo))
1815         {
1816                 spamserv_punish(channel, user, spamserv_conf.long_ban_duration, reason, 1);
1817         }
1818         else if(CHECK_SHORT_TBAN(uInfo))
1819         {
1820                 spamserv_punish(channel, user, spamserv_conf.short_ban_duration, reason, 1);
1821         }
1822         else if(CHECK_KICKBAN(uInfo))
1823         {
1824                 spamserv_punish(channel, user, 0, reason, 1);
1825         }
1826         else if(CHECK_KICK(uInfo))
1827         {
1828                 spamserv_punish(channel, user, 0, reason, 0);
1829         }
1830 }
1831
1832 static int
1833 spamserv_saxdb_read(struct dict *database)
1834 {
1835         dict_iterator_t it;
1836         struct record_data *hir;
1837         struct chanNode *channel;
1838         struct chanInfo *cInfo;
1839         struct string_list *strlist;
1840         unsigned int flags,exceptlevel;
1841         char *str, *info;
1842         time_t expiry;
1843
1844         for(it = dict_first(database); it; it = iter_next(it))
1845         {
1846                 hir = iter_data(it);
1847
1848                 if(hir->type != RECDB_OBJECT)
1849                 {
1850                         log_module(SS_LOG, LOG_WARNING, "Unexpected rectype %d for %s.", hir->type, iter_key(it));
1851                         continue;
1852                 }
1853
1854                 channel = GetChannel(iter_key(it));
1855                 strlist = database_get_data(hir->d.object, KEY_EXCEPTIONS, RECDB_STRING_LIST);
1856
1857                 str = database_get_data(hir->d.object, KEY_FLAGS, RECDB_QSTRING);
1858                 flags = str ? atoi(str) : 0;
1859
1860                 info = database_get_data(hir->d.object, KEY_INFO, RECDB_QSTRING);
1861         str = database_get_data(hir->d.object, KEY_EXCEPTLEVEL, RECDB_QSTRING);
1862         exceptlevel = str ? atoi(str) : 400;
1863
1864                 str = database_get_data(hir->d.object, KEY_EXPIRY, RECDB_QSTRING);
1865                 expiry = str ? strtoul(str, NULL, 0) : 0;
1866
1867                 if(channel && info)
1868                 {
1869                         if((cInfo = spamserv_register_channel(channel, strlist, flags, info)))
1870                         {
1871                                 /* if the channel is suspended and expiry = 0 it means: channel will
1872                                    never expire ! it does NOT mean, the channel is not suspended */
1873                                 if(CHECK_SUSPENDED(cInfo) && expiry && (expiry < now))
1874                                 {
1875                                         cInfo->flags &= ~CHAN_SUSPENDED;
1876                                         spamserv_join_channel(cInfo->channel);
1877                                 }
1878                                 else if(!CHECK_SUSPENDED(cInfo))
1879                                         spamserv_join_channel(cInfo->channel);
1880                                 else
1881                                         cInfo->suspend_expiry = expiry;
1882                 cInfo->exceptlevel=exceptlevel;
1883                         }
1884                 }
1885                 else
1886                         log_module(SS_LOG, LOG_ERROR, "Couldn't register channel %s. Channel or info invalid.", iter_key(it));
1887         }
1888
1889         return 0;
1890 }
1891
1892 static int
1893 spamserv_saxdb_write(struct saxdb_context *ctx)
1894 {
1895         dict_iterator_t it;
1896
1897         for(it = dict_first(registered_channels_dict); it; it = iter_next(it))
1898         {
1899                 struct chanInfo *cInfo = iter_data(it);
1900
1901                 saxdb_start_record(ctx, cInfo->channel->name, 1);
1902
1903                 if(cInfo->exceptions->used)
1904                         saxdb_write_string_list(ctx, KEY_EXCEPTIONS, cInfo->exceptions);
1905
1906                 if(cInfo->flags)
1907                         saxdb_write_int(ctx, KEY_FLAGS, cInfo->flags);
1908
1909                 saxdb_write_string(ctx, KEY_INFO, cInfo->info);
1910         saxdb_write_int(ctx, KEY_EXCEPTLEVEL, cInfo->exceptlevel);
1911
1912                 if(cInfo->suspend_expiry)
1913                         saxdb_write_int(ctx, KEY_EXPIRY, cInfo->suspend_expiry);
1914
1915                 saxdb_end_record(ctx);
1916         }
1917         return 0;
1918 }
1919
1920 static void
1921 spamserv_conf_read(void)
1922 {
1923         dict_t conf_node;
1924         const char *str;
1925
1926         if(!(conf_node = conf_get_data(SPAMSERV_CONF_NAME, RECDB_OBJECT)))
1927         {
1928                 log_module(SS_LOG, LOG_ERROR, "config node `%s' is missing or has wrong type.", SPAMSERV_CONF_NAME);
1929                 return;
1930         }
1931
1932         str = database_get_data(conf_node, KEY_DEBUG_CHANNEL, RECDB_QSTRING);
1933
1934         if(str)
1935         {
1936                 spamserv_conf.debug_channel = AddChannel(str, now, "+tinms", NULL);
1937
1938                 if(spamserv_conf.debug_channel)
1939                         spamserv_join_channel(spamserv_conf.debug_channel);
1940         }
1941         else
1942         {
1943                 spamserv_conf.debug_channel = NULL;
1944         }
1945
1946         spamserv_conf.global_exceptions = database_get_data(conf_node, KEY_GLOBAL_EXCEPTIONS, RECDB_STRING_LIST);
1947
1948         str = database_get_data(conf_node, KEY_NETWORK_RULES, RECDB_QSTRING);
1949         spamserv_conf.network_rules = str ? str : NULL;
1950
1951         str = database_get_data(conf_node, KEY_TRIGGER, RECDB_QSTRING);
1952         spamserv_conf.trigger = str ? str[0] : 0;
1953
1954         str = database_get_data(conf_node, KEY_SHORT_BAN_DURATION, RECDB_QSTRING);
1955         spamserv_conf.short_ban_duration = str ? ParseInterval(str) : ParseInterval("15m");
1956
1957         str = database_get_data(conf_node, KEY_LONG_BAN_DURATION, RECDB_QSTRING);
1958         spamserv_conf.long_ban_duration = str ? ParseInterval(str) : ParseInterval("1h");
1959
1960         str = database_get_data(conf_node, KEY_GLINE_DURATION, RECDB_QSTRING);
1961         spamserv_conf.gline_duration = str ? ParseInterval(str) : ParseInterval("1h");
1962
1963         str = database_get_data(conf_node, KEY_EXCEPTION_MAX, RECDB_QSTRING);
1964         spamserv_conf.exception_max = str ? strtoul(str, NULL, 0) : 10;
1965
1966         str = database_get_data(conf_node, KEY_EXCEPTION_MIN_LEN, RECDB_QSTRING);
1967         spamserv_conf.exception_min_len = str ? strtoul(str, NULL, 0) : 4;
1968
1969         str = database_get_data(conf_node, KEY_EXCEPTION_MAX_LEN, RECDB_QSTRING);
1970         spamserv_conf.exception_max_len = str ? strtoul(str, NULL, 0) : 15;
1971
1972         str = database_get_data(conf_node, KEY_ADV_CHAN_MUST_EXIST, RECDB_QSTRING);
1973         spamserv_conf.adv_chan_must_exist = str ? enabled_string(str) : 1;
1974
1975         str = database_get_data(conf_node, KEY_STRIP_MIRC_CODES, RECDB_QSTRING);
1976         spamserv_conf.strip_mirc_codes = str ? enabled_string(str) : 0;
1977
1978         str = database_get_data(conf_node, KEY_ALLOW_MOVE_MERGE, RECDB_QSTRING);
1979         spamserv_conf.allow_move_merge = str ? enabled_string(str) : 0;
1980 }
1981
1982 static void
1983 spamserv_db_cleanup(void)
1984 {
1985         dict_iterator_t it;
1986
1987         while((it = dict_first(registered_channels_dict)))
1988         {
1989                 spamserv_unregister_channel(iter_data(it));
1990         }
1991
1992         while((it = dict_first(killed_users_dict)))
1993         {
1994                 free(iter_data(it));
1995         }
1996
1997         dict_delete(registered_channels_dict);
1998         dict_delete(connected_users_dict);
1999         dict_delete(killed_users_dict);
2000 }
2001
2002 void
2003 init_spamserv(const char *nick)
2004 {
2005         if(!nick)
2006                 return;
2007
2008         const char *modes = conf_get_data("services/spamserv/modes", RECDB_QSTRING);
2009         spamserv = AddLocalUser(nick, nick, NULL, "Anti Spam Services", modes);
2010         spamserv_service = service_register(spamserv);
2011         service_register(spamserv)->trigger = spamserv_conf.trigger;
2012
2013         conf_register_reload(spamserv_conf_read);
2014
2015         SS_LOG = log_register_type("SpamServ", "file:spamserv.log");
2016
2017         registered_channels_dict = dict_new();
2018         connected_users_dict = dict_new();
2019         killed_users_dict = dict_new();
2020
2021         reg_new_user_func(spamserv_new_user_func);
2022         reg_del_user_func(spamserv_del_user_func);
2023         reg_nick_change_func(spamserv_nick_change_func);
2024         reg_join_func(spamserv_user_join);
2025         reg_part_func(spamserv_user_part);
2026
2027         timeq_add(now + FLOOD_TIMEQ_FREQ, timeq_flood, NULL);
2028         timeq_add(now + JOINFLOOD_TIMEQ_FREQ, timeq_joinflood, NULL);
2029         timeq_add(now + ADV_TIMEQ_FREQ, timeq_adv, NULL);
2030         timeq_add(now + WARNLEVEL_TIMEQ_FREQ, timeq_warnlevel, NULL);
2031         timeq_add(now + KILL_TIMEQ_FREQ, timeq_kill, NULL);
2032
2033         spamserv_module = module_register("SpamServ", SS_LOG, "spamserv.help", NULL);
2034         modcmd_register(spamserv_module, "REGISTER", cmd_register, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, "flags", "+acceptchan,+helping", NULL);
2035         modcmd_register(spamserv_module, "UNREGISTER", cmd_unregister, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, "flags", "+loghostmask", NULL);
2036         modcmd_register(spamserv_module, "ADDEXCEPTION", cmd_addexception, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2037         modcmd_register(spamserv_module, "DELEXCEPTION", cmd_delexception, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2038         modcmd_register(spamserv_module, "STATUS", cmd_status, 1, 0, NULL);
2039         modcmd_register(spamserv_module, "SET", cmd_set, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2040         modcmd_register(spamserv_module, "SET SPAMLIMIT", opt_spamlimit, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2041         modcmd_register(spamserv_module, "SET ADVREACTION", opt_advreaction, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2042         modcmd_register(spamserv_module, "SET WARNREACTION", opt_warnreaction, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2043         modcmd_register(spamserv_module, "SET ADVSCAN", opt_advscan, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2044         modcmd_register(spamserv_module, "SET SPAMSCAN", opt_spamscan, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2045         modcmd_register(spamserv_module, "SET FLOODSCAN", opt_floodscan, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2046         modcmd_register(spamserv_module, "SET JOINFLOODSCAN", opt_joinflood, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2047         modcmd_register(spamserv_module, "SET SCANCHANOPS", opt_scanops, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2048         modcmd_register(spamserv_module, "SET SCANVOICED", opt_scanvoiced, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2049     modcmd_register(spamserv_module, "SET EXCEPTLEVEL", opt_exceptlevel, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2050
2051         saxdb_register("SpamServ", spamserv_saxdb_read, spamserv_saxdb_write);
2052         reg_exit_func(spamserv_db_cleanup);
2053         message_register_table(msgtab);
2054         crc32_init();
2055 }