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_OPER_CHANNEL            "oper_channel"
  40 #define KEY_GLOBAL_EXCEPTIONS        "global_exceptions"
  41 #define KEY_NETWORK_RULES            "network_rules"
  42 #define KEY_TRIGGER                  "trigger"
  43 #define KEY_SHORT_BAN_DURATION       "short_ban_duration"
  44 #define KEY_LONG_BAN_DURATION        "long_ban_duration"
  45 #define KEY_GLINE_DURATION           "gline_duration"
  46 #define KEY_EXCEPTION_MAX            "exception_max"
  47 #define KEY_EXCEPTION_MIN_LEN        "exception_min_len"
  48 #define KEY_EXCEPTION_MAX_LEN        "exception_max_len"
  49 #define KEY_ADV_CHAN_MUST_EXIST      "adv_chan_must_exist"
  50 #define KEY_STRIP_MIRC_CODES         "strip_mirc_codes"
  51 #define KEY_ALLOW_MOVE_MERGE         "allow_move_merge"
  52
  53 #define SPAMSERV_FUNC(NAME)     MODCMD_FUNC(NAME)
  54 #define SPAMSERV_SYNTAX()       svccmd_send_help(user, spamserv, cmd)
  55 #define SPAMSERV_MIN_PARMS(N) do { \
  56 (void)argv; \
  57   if(argc < N) { \
  58     ss_reply(MSG_MISSING_PARAMS, argv[0]); \
  59     SPAMSERV_SYNTAX(); \
  60     return 0; } } while(0)
  61
  62 struct userNode                 *spamserv;
  63 static struct module    *spamserv_module;
  64 static struct service   *spamserv_service;
  65 static struct log_type  *SS_LOG;
  66 static unsigned long    crc_table[256];
  67
  68 dict_t registered_channels_dict;
  69 dict_t connected_users_dict;
  70 dict_t killed_users_dict;
  71
  72 #define spamserv_notice(target, format...) send_message(target , spamserv , ## format)
  73 #define spamserv_debug(format...) do { if(spamserv_conf.debug_channel) send_channel_message(spamserv_conf.debug_channel , spamserv , ## format); } while(0)
  74 #define spamserv_oper_message(format...) do { if(spamserv_conf.oper_channel) send_channel_message(spamserv_conf.oper_channel , spamserv , ## format); } while(0)
  75 #define ss_reply(format...)     send_message(user , spamserv , ## format)
  76
  77 #define SET_SUBCMDS_SIZE 10
  78
  79 const char *set_subcommands[SET_SUBCMDS_SIZE] = {"SPAMLIMIT", "ADVREACTION", "WARNREACTION", "ADVSCAN", "SPAMSCAN", "FLOODSCAN", "JOINFLOODSCAN", "EXCEPTLEVEL","SCANCHANOPS", "SCANVOICED"};
  80
  81 static void spamserv_clear_spamNodes(struct chanNode *channel);
  82 static void spamserv_punish(struct chanNode *channel, struct userNode *user, time_t expires, char *reason, int ban);
  83 static unsigned long crc32(const char *text);
  84
  85 #define BINARY_OPTION(arguments...)     return binary_option(arguments, user, channel, argc, argv);
  86 #define MULTIPLE_OPTION(arguments...)   return multiple_option(arguments, values, ArrayLength(values), user, channel, argc, argv);
  87
  88 static const struct message_entry msgtab[] = {
  89     { "SSMSG_CHANNEL_OPTIONS",         "Channel Options:" },
  90     { "SSMSG_STRING_VALUE",            "$b%s$b%s" },
  91     { "SSMSG_NUMERIC_VALUE",           "$b%s$b%d - %s" },
  92     { "SSMSG_EASYNUMERIC_VALUE",       "$b%s$b%d" },
  93     { "SSMSG_INVALID_NUM_SET",         "$b'%d'$b is an invalid %s setting." },
  94     { "SSMSG_INVALID_OPTION",          "$b%s$b is not a valid %s option." },
  95     { "SSMSG_INVALID_BINARY",          "$b%s$b is an invalid binary value." },
  96
  97     { "SSMSG_NOT_REGISTERED",          "$b%s$b has not been registered with $b$X$b." },
  98     { "SSMSG_NOT_REGISTERED_CS",       "$b%s$b has not been registered with $b$C$b." },
  99     { "SSMSG_ALREADY_REGISTERED",      "$b%s$b is already registered." },
 100     { "SSMSG_DEBUG_CHAN",              "You may not register the debug channel." },
 101     { "SSMSG_SUSPENDED_CS",            "$b$C$b access to $b%s$b has been temporarily suspended, thus you can't %s it." },
 102     { "SSMSG_SUSPENDED",               "$b$X$b access to $b%s$b has been temporarily suspended." },
 103     { "SSMSG_NO_REGISTER",             "Due to an error it was not possible to register $b%s$b." },
 104     { "SSMSG_REG_SUCCESS",             "Channel $b%s$b registered." },
 105     { "SSMSG_UNREG_SUCCESS",           "$b%s$b has been unregistered." },
 106     { "SSMSG_NO_ACCESS",               "You lack sufficient access to use this command." },
 107     { "SSMSG_MUST_BE_OPER",            "You must be an irc operator to set this option." },
 108     { "SSMSG_CONFIRM_UNREG",           "To confirm this unregistration, you must append 'CONFIRM' to the end of your command. For example, 'unregister CONFIRM'." },
 109
 110     { "SSMSG_NO_EXCEPTIONS",           "No words found in the exception list." },
 111     { "SSMSG_NO_SUCH_EXCEPTION",       "Word $b%s$b not found in the exception list." },
 112     { "SSMSG_EXCEPTION_LIST",          "The following words are in the exception list:" },
 113     { "SSMSG_EXCEPTION_ADDED",         "Word $b%s$b added to the exception list." },
 114     { "SSMSG_EXCEPTION_DELETED",       "Word $b%s$b deleted from the exception list." },
 115     { "SSMSG_EXCEPTION_IN_LIST",       "The word $b%s$b is already in the exception list." },
 116     { "SSMSG_EXCEPTION_MAX",           "The exception list has reached the maximum exceptions (max %lu). Delete a word to add another one." },
 117     { "SSMSG_EXCEPTION_TOO_SHORT",     "The word must be at least %lu characters long." },
 118     { "SSMSG_EXCEPTION_TOO_LONG",      "The word may not be longer than %lu characters." },
 119
 120     { "SSMSG_STATUS",                  "$bStatus:$b" },
 121     { "SSMSG_STATUS_USERS",            "Total Users Online:  %u" },
 122     { "SSMSG_STATUS_CHANNELS",         "Registered Channels: %u" },
 123     { "SSMSG_STATUS_MEMORY",           "$bMemory Information:$b" },
 124     { "SSMSG_STATUS_CHANNEL_LIST",     "$bRegistered Channels:$b" },
 125     { "SSMSG_STATUS_NO_CHANNEL",       "No channels registered." },
 126         { NULL, NULL }
 127 };
 128
 129 #define SSMSG_DEBUG_KICK              "Kicked user $b%s$b from $b%s$b, reason: %s"
 130 #define SSMSG_DEBUG_BAN               "Banned user $b%s$b from $b%s$b, reason: %s"
 131 #define SSMSG_DEBUG_KILL              "Killed user $b%s$b, last violation in $b%s$b"
 132 #define SSMSG_DEBUG_GLINE             "Glined user $b%s$b, host $b%s$b, last violation in $b%s$b"
 133 #define SSMSG_DEBUG_RECONNECT         "Killed user $b%s$b reconnected to the network"
 134 #define SSMSG_SPAM                    "Spamming"
 135 #define SSMSG_FLOOD                   "Flooding the channel/network"
 136 #define SSMSG_ADV                     "Advertising"
 137 #define SSMSG_JOINFLOOD               "Join flooding the channel"
 138 #define SSMSG_WARNING                 "%s is against the network rules"
 139 #define SSMSG_WARNING_2               "You are violating the network rules"
 140 #define SSMSG_WARNING_RULES           "%s is against the network rules. Read the network rules at %s"
 141 #define SSMSG_WARNING_RULES_2         "You are violating the network rules. Read the network rules at %s"
 142 #define SSMSG_CHANNEL_REGISTERED      "%s (channel %s) registered by %s."
 143 #define SSMSG_CHANNEL_UNREGISTERED    "%s (channel %s) unregistered by %s."
 144
 145 static struct
 146 {
 147         struct chanNode *debug_channel;
 148         struct chanNode *oper_channel;
 149         struct string_list *global_exceptions;
 150         const char *network_rules;
 151         unsigned char trigger;
 152         unsigned long short_ban_duration;
 153         unsigned long long_ban_duration;
 154         unsigned long gline_duration;
 155         unsigned long exception_max;
 156         unsigned long exception_min_len;
 157         unsigned long exception_max_len;
 158         unsigned int adv_chan_must_exist : 1;
 159         unsigned int strip_mirc_codes : 1;
 160         unsigned int allow_move_merge : 1;
 161 } spamserv_conf;
 162
 163 /***********************************************/
 164 /*                   Channel                   */
 165 /***********************************************/
 166
 167 struct chanInfo*
 168 get_chanInfo(const char *channelname)
 169 {
 170         return dict_find(registered_channels_dict, channelname, 0);
 171 }
 172
 173 static void
 174 spamserv_join_channel(struct chanNode *channel)
 175 {
 176         struct mod_chanmode change;
 177         mod_chanmode_init(&change);
 178         change.argc = 1;
 179         change.args[0].mode = MODE_CHANOP;
 180         change.args[0].u.member = AddChannelUser(spamserv, channel);
 181         mod_chanmode_announce(spamserv, channel, &change);
 182 }
 183
 184 static void
 185 spamserv_part_channel(struct chanNode *channel, char *reason)
 186 {
 187         /* we only have to clear the spamNodes because every other node expires on it's own */
 188         spamserv_clear_spamNodes(channel);
 189         DelChannelUser(spamserv, channel, reason, 0);
 190 }
 191
 192 static struct chanInfo*
 193 spamserv_register_channel(struct chanNode *channel, struct string_list *exceptions, unsigned int flags, char *info)
 194 {
 195         struct chanInfo *cInfo = malloc(sizeof(struct chanInfo));
 196
 197         if(!cInfo)
 198         {
 199                 log_module(SS_LOG, LOG_ERROR, "Couldn't allocate memory for cInfo; channel: %s", channel->name);
 200                 return NULL;
 201         }
 202
 203         cInfo->channel = channel;
 204         cInfo->exceptions = exceptions ? string_list_copy(exceptions) : alloc_string_list(1);
 205         cInfo->flags = flags;
 206     cInfo->exceptlevel = 400;
 207         safestrncpy(cInfo->info, info, sizeof(cInfo->info));
 208         cInfo->suspend_expiry = 0;
 209         dict_insert(registered_channels_dict, cInfo->channel->name, cInfo);
 210
 211         return cInfo;
 212 }
 213
 214 static void
 215 spamserv_unregister_channel(struct chanInfo *cInfo)
 216 {
 217         if(!cInfo)
 218                 return;
 219
 220         dict_remove(registered_channels_dict, cInfo->channel->name);
 221         free_string_list(cInfo->exceptions);
 222         free(cInfo);
 223 }
 224
 225 void
 226 spamserv_cs_suspend(struct chanNode *channel, time_t expiry, int suspend, char *reason)
 227 {
 228         struct chanInfo *cInfo = get_chanInfo(channel->name);
 229
 230         if(cInfo)
 231         {
 232                 if(suspend)
 233                 {
 234                         cInfo->flags |= CHAN_SUSPENDED;
 235                         cInfo->suspend_expiry = expiry;
 236                         spamserv_part_channel(channel, reason);
 237                 }
 238                 else
 239                 {
 240                         if(CHECK_SUSPENDED(cInfo))
 241                         {
 242                                 cInfo->flags &= ~CHAN_SUSPENDED;
 243                                 cInfo->suspend_expiry = 0;
 244                         }
 245                 }
 246         }
 247 }
 248
 249 int
 250 spamserv_cs_move_merge(struct userNode *user, struct chanNode *channel, struct chanNode *target, int move)
 251 {
 252         struct chanInfo *cInfo = get_chanInfo(channel->name);
 253
 254         if(cInfo)
 255         {
 256                 char reason[MAXLEN];
 257
 258                 if(!spamserv_conf.allow_move_merge || get_chanInfo(target->name))
 259                 {
 260                         if(move)
 261                                 snprintf(reason, sizeof(reason), "unregistered due to a channel move to %s", target->name);
 262                         else
 263                                 snprintf(reason, sizeof(reason), "unregistered due to a channel merge into %s", target->name);
 264
 265                         spamserv_cs_unregister(user, channel, manually, reason);
 266                         return 0;
 267                 }
 268
 269                 cInfo->channel = target;
 270
 271                 dict_remove(registered_channels_dict, channel->name);
 272                 dict_insert(registered_channels_dict, target->name, cInfo);
 273
 274                 if(move)
 275                 {
 276                         snprintf(reason, sizeof(reason), "Channel moved to %s by %s.", target->name, user->handle_info->handle);
 277                 }
 278                 else
 279                 {
 280                         spamserv_join_channel(target);
 281                         snprintf(reason, sizeof(reason), "%s merged into %s by %s.", channel->name, target->name, user->handle_info->handle);
 282                 }
 283
 284                 if(!CHECK_SUSPENDED(cInfo))
 285                         spamserv_part_channel(channel, reason);
 286
 287                 if(move)
 288                         snprintf(reason, sizeof(reason), "$X (channel %s) moved to %s by %s.", channel->name, target->name, user->handle_info->handle);
 289                 else
 290                         snprintf(reason, sizeof(reason), "$X (channel %s) merged into %s by %s.", channel->name, target->name, user->handle_info->handle);
 291
 292                 /*global_message(MESSAGE_RECIPIENT_OPERS | MESSAGE_RECIPIENT_HELPERS, reason);*/
 293                 spamserv_oper_message("%s", reason);
 294                 return 1;
 295         }
 296
 297         return 0;
 298 }
 299
 300 void
 301 spamserv_cs_unregister(struct userNode *user, struct chanNode *channel, enum cs_unreg type, char *reason)
 302 {
 303         struct chanInfo *cInfo = get_chanInfo(channel->name);
 304
 305         if(cInfo)
 306         {
 307                 char global[MAXLEN], partmsg[MAXLEN];
 308
 309                 switch (type)
 310                 {
 311                 case manually:
 312                         snprintf(global, sizeof(global), "$X (channel %s) %s by %s.", channel->name, reason, user->handle_info->handle);
 313                         snprintf(partmsg, sizeof(partmsg), "%s %s by %s.", channel->name, reason, user->handle_info->handle);
 314                         break;
 315                 case expire:
 316                         snprintf(global, sizeof(global), "$X (channel %s) registration expired.", channel->name);
 317                         snprintf(partmsg, sizeof(partmsg), "%s registration expired.", channel->name);
 318                         break;
 319                 case lost_all_users:
 320                         snprintf(global, sizeof(global), "$X (channel %s) lost all users.", channel->name);
 321                         snprintf(partmsg, sizeof(partmsg), "%s lost all users.", channel->name);
 322                         break;
 323                 }
 324
 325                 if(!CHECK_SUSPENDED(cInfo))
 326                         spamserv_part_channel(channel, partmsg);
 327
 328                 spamserv_unregister_channel(cInfo);
 329                 spamserv_oper_message(SSMSG_CHANNEL_UNREGISTERED, spamserv->nick, channel->name, user->handle_info->handle);
 330         }
 331 }
 332
 333 /***********************************************/
 334 /*                    User                     */
 335 /***********************************************/
 336
 337 static struct userInfo*
 338 get_userInfo(const char *nickname)
 339 {
 340         return dict_find(connected_users_dict, nickname, 0);
 341 }
 342
 343 static void
 344 spamserv_create_spamNode(struct chanNode *channel, struct userInfo *uInfo, char *text)
 345 {
 346         struct spamNode *sNode = malloc(sizeof(struct spamNode));
 347
 348         if(!sNode)
 349         {
 350                 log_module(SS_LOG, LOG_ERROR, "Couldn't allocate memory for sNode; channel: %s; user: %s", channel->name, uInfo->user->nick);
 351                 return;
 352         }
 353
 354         sNode->channel = channel;
 355         sNode->crc32 = crc32(text);
 356         sNode->count = 1;
 357         sNode->next = NULL;
 358
 359         if(uInfo->spam)
 360         {
 361                 struct spamNode *temp = uInfo->spam;
 362
 363                 while(temp->next)
 364                         temp = temp->next;
 365
 366                 sNode->prev = temp;
 367                 temp->next = sNode;
 368         }
 369         else
 370         {
 371                 sNode->prev = NULL;
 372                 uInfo->spam = sNode;
 373         }
 374 }
 375
 376 static void
 377 spamserv_delete_spamNode(struct userInfo *uInfo, struct spamNode *sNode)
 378 {
 379         if(!sNode)
 380                 return;
 381
 382         if(sNode == uInfo->spam)
 383                 uInfo->spam = sNode->next;
 384
 385         if(sNode->next)
 386                  sNode->next->prev = sNode->prev;
 387         if(sNode->prev)
 388                  sNode->prev->next = sNode->next;
 389
 390         free(sNode);
 391 }
 392
 393 static void
 394 spamserv_clear_spamNodes(struct chanNode *channel)
 395 {
 396         struct userInfo *uInfo;
 397         struct spamNode *sNode;
 398         unsigned int i;
 399
 400         for(i = 0; i < channel->members.used; i++)
 401         {
 402                 if((uInfo = get_userInfo(channel->members.list[i]->user->nick)))
 403                 {
 404                         if((sNode = uInfo->spam))
 405                         {
 406                                 for(; sNode; sNode = sNode->next)
 407                                         if(sNode->channel == channel)
 408                                                 break;
 409
 410                                 if(sNode)
 411                                         spamserv_delete_spamNode(uInfo, sNode);
 412                         }
 413                 }
 414         }
 415 }
 416
 417 static void
 418 spamserv_create_floodNode(struct chanNode *channel, struct userNode *user, struct floodNode **uI_fNode)
 419 {
 420         struct floodNode *fNode = malloc(sizeof(struct floodNode));
 421
 422         if(!fNode)
 423         {
 424                 log_module(SS_LOG, LOG_ERROR, "Couldn't allocate memory for fNode; channel: %s; user: %s", channel->name, user->nick);
 425                 return;
 426         }
 427
 428         fNode->channel = channel;
 429         fNode->owner = user;
 430         fNode->count = 1;
 431         fNode->time = now;
 432         fNode->next = NULL;
 433
 434         if(*uI_fNode)
 435         {
 436                 struct floodNode *temp = *uI_fNode;
 437
 438                 while(temp->next)
 439                         temp = temp->next;
 440
 441                 fNode->prev = temp;
 442                 temp->next = fNode;
 443         }
 444         else
 445         {
 446                 fNode->prev = NULL;
 447                 *uI_fNode = fNode;
 448         }
 449 }
 450
 451 static void
 452 spamserv_delete_floodNode(struct floodNode **uI_fNode, struct floodNode *fNode)
 453 {
 454         if(!fNode)
 455                 return;
 456
 457         if(fNode == *uI_fNode)
 458                 *uI_fNode = fNode->next;
 459
 460         if(fNode->next)
 461                  fNode->next->prev = fNode->prev;
 462         if(fNode->prev)
 463                  fNode->prev->next = fNode->next;
 464
 465         free(fNode);
 466 }
 467
 468 static void
 469 spamserv_create_user(struct userNode *user)
 470 {
 471         struct userInfo *uInfo = malloc(sizeof(struct userInfo));
 472         struct killNode *kNode = dict_find(killed_users_dict, irc_ntoa(&user->ip), 0);
 473
 474         if(!uInfo)
 475         {
 476                 log_module(SS_LOG, LOG_ERROR, "Couldn't allocate memory for uInfo; nick: %s", user->nick);
 477                 return;
 478         }
 479
 480         if(kNode)
 481                 spamserv_debug(SSMSG_DEBUG_RECONNECT, user->nick);
 482
 483         uInfo->user = user;
 484         uInfo->spam = NULL;
 485         uInfo->flood = NULL;
 486         uInfo->joinflood = NULL;
 487         uInfo->flags = kNode ? USER_KILLED : 0;
 488         uInfo->warnlevel = kNode ? kNode->warnlevel : 0;
 489         uInfo->lastadv = 0;
 490
 491         dict_insert(connected_users_dict, user->nick, uInfo);
 492
 493         if(kNode)
 494         {
 495                 dict_remove(killed_users_dict, irc_ntoa(&user->ip));
 496                 free(kNode);
 497         }
 498 }
 499
 500 static void
 501 spamserv_delete_user(struct userInfo *uInfo)
 502 {
 503         if(!uInfo)
 504                 return;
 505
 506         if(uInfo->spam)
 507                 while(uInfo->spam)
 508                         spamserv_delete_spamNode(uInfo, uInfo->spam);
 509
 510         if(uInfo->flood)
 511                 while(uInfo->flood)
 512                         spamserv_delete_floodNode(&uInfo->flood, uInfo->flood);
 513
 514         if(uInfo->joinflood)
 515                 while(uInfo->joinflood)
 516                         spamserv_delete_floodNode(&uInfo->joinflood, uInfo->joinflood);
 517
 518         dict_remove(connected_users_dict, uInfo->user->nick);
 519         free(uInfo);
 520 }
 521
 522 static void
 523 spamserv_new_user_func(struct userNode *user)
 524 {
 525         if(!IsLocal(user))
 526                 spamserv_create_user(user);
 527 }
 528
 529 static void
 530 spamserv_del_user_func(struct userNode *user, struct userNode *killer, UNUSED_ARG(const char *why))
 531 {
 532         struct userInfo *uInfo = get_userInfo(user->nick);
 533         struct killNode *kNode;
 534
 535         if(killer == spamserv)
 536         {
 537                 kNode = malloc(sizeof(struct killNode));
 538
 539                 if(!kNode)
 540                 {
 541                         log_module(SS_LOG, LOG_ERROR, "Couldn't allocate memory for killNode - nickname %s", user->nick);
 542                         spamserv_delete_user(uInfo);
 543                         return;
 544                 }
 545
 546                 if(uInfo->warnlevel > KILL_WARNLEVEL)
 547                         kNode->warnlevel = uInfo->warnlevel - KILL_WARNLEVEL;
 548                 else
 549                         kNode->warnlevel = 0;
 550
 551                 kNode->time = now;
 552
 553                 dict_insert(killed_users_dict, irc_ntoa(&user->ip), kNode);
 554         }
 555
 556         spamserv_delete_user(uInfo);
 557 }
 558
 559 static void
 560 spamserv_nick_change_func(struct userNode *user, const char *old_nick)
 561 {
 562         struct userInfo *uInfo = get_userInfo(old_nick);
 563
 564         dict_remove(connected_users_dict, old_nick);
 565         dict_insert(connected_users_dict, user->nick, uInfo);
 566 }
 567
 568 static int
 569 spamserv_user_join(struct modeNode *mNode)
 570 {
 571         struct chanNode *channel = mNode->channel;
 572         struct userNode *user = mNode->user;
 573         struct chanInfo *cInfo;
 574         struct userInfo *uInfo;
 575         struct floodNode *jfNode;
 576
 577         if(user->uplink->burst || !(cInfo = get_chanInfo(channel->name)) || !CHECK_JOINFLOOD(cInfo) || !(uInfo = get_userInfo(user->nick)))
 578                 return 0;
 579
 580         if(IsOper(user))
 581         {
 582                 return;
 583         }
 584
 585     if(!CHECK_CHANOPS(cInfo))
 586         {
 587                 //struct modeNode *mn = GetUserMode(channel, user);
 588                 //if(mn->modes & MODE_CHANOP)
 589                 //      return;
 590         if(check_user_level(channel, user, lvlGiveOps, 1, 0))
 591             return 0;
 592         }
 593
 594     if(!CHECK_VOICED(cInfo))
 595         {
 596         if(check_user_level(channel, user, lvlGiveVoice, 1, 0))
 597             return 0;
 598     }
 599
 600     if(cInfo->exceptlevel == 0)
 601         return 0;
 602     if(cInfo->exceptlevel < 501) {
 603       struct userData *uData;
 604        if((uData = GetChannelUser(channel->channel_info, user->handle_info)) && (uData->access >= cInfo->exceptlevel)) {
 605         return 0;
 606        }
 607     }
 608
 609         if(!(jfNode = uInfo->joinflood))
 610         {
 611                 spamserv_create_floodNode(channel, user, &uInfo->joinflood);
 612         }
 613         else
 614         {
 615                 for(; jfNode; jfNode = jfNode->next)
 616                         if(jfNode->channel == channel)
 617                                 break;
 618
 619                 if(!jfNode)
 620                 {
 621                         spamserv_create_floodNode(channel, user, &uInfo->joinflood);
 622                 }
 623                 else
 624                 {
 625                         jfNode->count++;
 626                         jfNode->time = now;
 627
 628                         if(jfNode->count > JOINFLOOD_MAX)
 629                         {
 630                                 char reason[MAXLEN];
 631
 632                                 spamserv_delete_floodNode(&uInfo->joinflood, jfNode);
 633                                 snprintf(reason, sizeof(reason), spamserv_conf.network_rules ? SSMSG_WARNING_RULES : SSMSG_WARNING, SSMSG_JOINFLOOD, spamserv_conf.network_rules);
 634                                 spamserv_punish(channel, user, JOINFLOOD_B_DURATION, reason, 1);
 635                         }
 636                 }
 637         }
 638
 639         return 0;
 640 }
 641
 642 static void
 643 spamserv_user_part(struct modeNode *mn, UNUSED_ARG(const char *reason))
 644 {
 645         struct userNode *user = mn->user;
 646         struct chanNode *channel = mn->channel;
 647         struct userInfo *uInfo;
 648         struct spamNode *sNode;
 649         struct floodNode *fNode;
 650
 651         if(user->dead || !get_chanInfo(channel->name) || !(uInfo = get_userInfo(user->nick)))
 652                 return;
 653
 654         if((sNode = uInfo->spam))
 655         {
 656                 for(; sNode; sNode = sNode->next)
 657                         if(sNode->channel == channel)
 658                                 break;
 659
 660                 if(sNode)
 661                         spamserv_delete_spamNode(uInfo, sNode);
 662         }
 663
 664         if((fNode = uInfo->flood))
 665         {
 666                 for(; fNode; fNode = fNode->next)
 667                         if(fNode->channel == channel)
 668                                 break;
 669
 670                 if(fNode)
 671                         spamserv_delete_floodNode(&uInfo->flood, fNode);
 672         }
 673 }
 674
 675 /***********************************************/
 676 /*                 Other Stuff                 */
 677 /***********************************************/
 678
 679 static void
 680 crc32_init(void)
 681 {
 682         unsigned long crc;
 683         int i, j;
 684
 685         for(i = 0; i < 256; i++)
 686         {
 687                 crc = i;
 688
 689                 for(j = 8; j > 0; j--)
 690                 {
 691                         if(crc & 1)
 692                         {
 693                                 crc = (crc >> 1) ^ 0xEDB88320L;
 694                         }
 695                         else
 696                         {
 697                                 crc >>= 1;
 698                         }
 699                 }
 700
 701                 crc_table[i] = crc;
 702         }
 703 }
 704
 705 static unsigned long
 706 crc32(const char *text)
 707 {
 708         register unsigned long crc = 0xFFFFFFFF;
 709         unsigned int c, i = 0;
 710
 711         while((c = (unsigned int)text[i++]) != 0)
 712                 crc = ((crc >> 8) & 0x00FFFFFF) ^ crc_table[(crc^c) & 0xFF];
 713
 714         return (crc^0xFFFFFFFF);
 715 }
 716
 717 static void
 718 timeq_flood(UNUSED_ARG(void *data))
 719 {
 720         dict_iterator_t         it;
 721         struct userInfo         *uInfo;
 722         struct floodNode        *fNode;
 723
 724         for(it = dict_first(connected_users_dict); it; it = iter_next(it))
 725         {
 726                 uInfo = iter_data(it);
 727
 728                 if(!(fNode = uInfo->flood))
 729                         continue;
 730
 731                 for(; fNode; fNode = fNode->next)
 732                 {
 733                         if(now - fNode->time > FLOOD_EXPIRE)
 734                         {
 735                                 if(!(--fNode->count))
 736                                         spamserv_delete_floodNode(&uInfo->flood, fNode);
 737                         }
 738                 }
 739         }
 740
 741         timeq_add(now + FLOOD_TIMEQ_FREQ, timeq_flood, NULL);
 742 }
 743
 744 static void
 745 timeq_joinflood(UNUSED_ARG(void *data))
 746 {
 747         dict_iterator_t it;
 748         struct userInfo *uInfo;
 749         struct floodNode *fNode;
 750
 751         for(it = dict_first(connected_users_dict); it; it = iter_next(it))
 752         {
 753                 uInfo = iter_data(it);
 754
 755                 if(!(fNode = uInfo->joinflood))
 756                         continue;
 757
 758                 for(; fNode; fNode = fNode->next)
 759                 {
 760                         if(now - fNode->time > JOINFLOOD_EXPIRE)
 761                         {
 762                                 if(!(--fNode->count))
 763                                         spamserv_delete_floodNode(&uInfo->joinflood, fNode);
 764                         }
 765                 }
 766         }
 767
 768         timeq_add(now + JOINFLOOD_TIMEQ_FREQ, timeq_joinflood, NULL);
 769 }
 770
 771 static void
 772 timeq_adv(UNUSED_ARG(void *data))
 773 {
 774         dict_iterator_t it;
 775         struct userInfo *uInfo;
 776
 777         for(it = dict_first(connected_users_dict); it; it = iter_next(it))
 778         {
 779                 uInfo = iter_data(it);
 780
 781                 if(uInfo->lastadv && uInfo->lastadv - now > ADV_EXPIRE)
 782                 {
 783                         uInfo->lastadv = 0;
 784                         uInfo->flags &= ~USER_ADV_WARNED;
 785                 }
 786         }
 787
 788         timeq_add(now + ADV_TIMEQ_FREQ, timeq_adv, NULL);
 789 }
 790
 791 static void
 792 timeq_warnlevel(UNUSED_ARG(void *data))
 793 {
 794         dict_iterator_t it;
 795         struct userInfo *uInfo;
 796
 797         for(it = dict_first(connected_users_dict); it; it = iter_next(it))
 798         {
 799                 uInfo = iter_data(it);
 800
 801                 if(uInfo->warnlevel > 0)
 802                         uInfo->warnlevel--;
 803         }
 804
 805         timeq_add(now + WARNLEVEL_TIMEQ_FREQ, timeq_warnlevel, NULL);
 806 }
 807
 808 static void
 809 timeq_kill(UNUSED_ARG(void *data))
 810 {
 811         dict_iterator_t it;
 812         struct killNode *kNode;
 813
 814         for(it = dict_first(killed_users_dict); it; it = iter_next(it))
 815         {
 816                 kNode = iter_data(it);
 817
 818                 if(kNode->time - now > KILL_EXPIRE)
 819                         free(kNode);
 820         }
 821
 822         timeq_add(now + KILL_TIMEQ_FREQ, timeq_kill, NULL);
 823 }
 824
 825 static int
 826 binary_option(char *name, unsigned long mask, struct userNode *user, struct chanNode *channel, int argc, char *argv[])
 827 {
 828         struct chanInfo *cInfo = get_chanInfo(channel->name);
 829         int value;
 830
 831         if(argc > 1)
 832         {
 833                 if(enabled_string(argv[1]))
 834                 {
 835                         cInfo->flags |= mask;
 836                         value = 1;
 837                 }
 838                 else if(disabled_string(argv[1]))
 839                 {
 840                     cInfo->flags &= ~mask;
 841                     value = 0;
 842                 }
 843                 else
 844                 {
 845                    spamserv_notice(user, "SSMSG_INVALID_BINARY", argv[1]);
 846                    return 0;
 847                 }
 848         }
 849         else
 850         {
 851                 value = (cInfo->flags & mask) ? 1 : 0;
 852         }
 853
 854         spamserv_notice(user, "SSMSG_STRING_VALUE", name, value ? "Enabled." : "Disabled.");
 855         return 1;
 856 }
 857
 858 struct valueData
 859 {
 860         char *description;
 861         char value;
 862         int  oper_only : 1;
 863 };
 864
 865 static int
 866 multiple_option(char *name, char *description, enum channelinfo info, struct valueData *values, int count, struct userNode *user, struct chanNode *channel, int argc, char *argv[])
 867 {
 868         struct chanInfo *cInfo = get_chanInfo(channel->name);
 869         int index;
 870
 871         if(argc > 1)
 872         {
 873                 index = atoi(argv[1]);
 874
 875                 if(index < 0 || index >= count)
 876                 {
 877                         spamserv_notice(user, "SSMSG_INVALID_NUM_SET", index, description);
 878
 879             for(index = 0; index < count; index++)
 880                 spamserv_notice(user, "SSMSG_NUMERIC_VALUE", name, index, values[index].description);
 881
 882                         return 0;
 883                 }
 884
 885                 if(values[index].oper_only && !IsOper(user))
 886                 {
 887                         spamserv_notice(user, "SSMSG_MUST_BE_OPER");
 888                         return 0;
 889                 }
 890
 891                 cInfo->info[info] = values[index].value;
 892         }
 893         else
 894         {
 895                 for(index = 0; index < count && cInfo->info[info] != values[index].value; index++);
 896         }
 897
 898         spamserv_notice(user, "SSMSG_NUMERIC_VALUE", name, index, values[index].description);
 899         return 1;
 900 }
 901
 902 static int
 903 show_exceptions(struct userNode *user, struct chanInfo *cInfo)
 904 {
 905         struct helpfile_table table;
 906         unsigned int i;
 907
 908         if(!cInfo->exceptions->used)
 909         {
 910                 spamserv_notice(user, "SSMSG_NO_EXCEPTIONS");
 911                 return 0;
 912         }
 913
 914         spamserv_notice(user, "SSMSG_EXCEPTION_LIST");
 915
 916         table.length = 0;
 917         table.width = 1;
 918         table.flags = TABLE_REPEAT_ROWS | TABLE_NO_FREE | TABLE_NO_HEADERS;
 919         table.contents = alloca(cInfo->exceptions->used * sizeof(*table.contents));
 920
 921         for(i = 0; i < cInfo->exceptions->used; i++)
 922         {
 923                 table.contents[table.length] = alloca(table.width * sizeof(**table.contents));
 924                 table.contents[table.length][0] = cInfo->exceptions->list[i];
 925                 table.length++;
 926         }
 927
 928         table_send(spamserv, user->nick, 0, NULL, table);
 929
 930         return 1;
 931 }
 932
 933 static void
 934 show_memory_usage(struct userNode *user)
 935 {
 936         dict_iterator_t it;
 937         struct helpfile_table table;
 938         struct chanInfo *cInfo;
 939         struct userInfo *uInfo;
 940         struct spamNode *sNode;
 941         struct floodNode *fNode;
 942         double channel_size = 0, user_size, size;
 943         unsigned int spamcount = 0, floodcount = 0, i, j;
 944         char buffer[64];
 945
 946         for(it = dict_first(registered_channels_dict); it; it = iter_next(it))
 947         {
 948                 cInfo = iter_data(it);
 949
 950                 if(!cInfo->exceptions->used)
 951                         continue;
 952
 953                 for(i = 0; i < cInfo->exceptions->used; i++)
 954                         channel_size += strlen(cInfo->exceptions->list[i]) * sizeof(char);
 955         }
 956
 957         for(it = dict_first(connected_users_dict); it; it = iter_next(it))
 958         {
 959                 uInfo = iter_data(it);
 960
 961                 for(sNode = uInfo->spam; sNode; sNode = sNode->next, spamcount++);
 962                 for(fNode = uInfo->flood; fNode; fNode = fNode->next, floodcount++);
 963                 for(fNode = uInfo->joinflood; fNode; fNode = fNode->next, floodcount++);
 964         }
 965
 966         channel_size += dict_size(registered_channels_dict) * sizeof(struct chanInfo);
 967
 968         user_size = dict_size(connected_users_dict) * sizeof(struct userInfo) +
 969                                 dict_size(killed_users_dict) * sizeof(struct killNode) +
 970                                 spamcount * sizeof(struct spamNode)     +
 971                                 floodcount *  sizeof(struct floodNode);
 972
 973         size = channel_size + user_size;
 974
 975         ss_reply("SSMSG_STATUS_MEMORY");
 976
 977         table.length = 3;
 978         table.width = 4;
 979         table.flags = TABLE_NO_FREE | TABLE_NO_HEADERS | TABLE_PAD_LEFT;
 980         table.contents = calloc(table.length, sizeof(char**));
 981
 982         // chanInfo
 983         table.contents[0] = calloc(table.width, sizeof(char*));
 984         snprintf(buffer, sizeof(buffer), "Channel Memory Usage:");
 985         table.contents[0][0] = strdup(buffer);
 986         snprintf(buffer, sizeof(buffer), " %g Byte; ", channel_size);
 987         table.contents[0][1] = strdup(buffer);
 988         snprintf(buffer, sizeof(buffer), "%g KiloByte; ", channel_size / 1024);
 989         table.contents[0][2] = strdup(buffer);
 990         snprintf(buffer, sizeof(buffer), "%g MegaByte", channel_size / 1024 / 1024);
 991         table.contents[0][3] = strdup(buffer);
 992
 993         // userInfo
 994         table.contents[1] = calloc(table.width, sizeof(char*));
 995         snprintf(buffer, sizeof(buffer), "User Memory Usage   :");
 996         table.contents[1][0] = strdup(buffer);
 997         snprintf(buffer, sizeof(buffer), " %g Byte; ", user_size);
 998         table.contents[1][1] = strdup(buffer);
 999         snprintf(buffer, sizeof(buffer), "%g KiloByte; ", user_size / 1024);
1000         table.contents[1][2] = strdup(buffer);
1001         snprintf(buffer, sizeof(buffer), "%g MegaByte", user_size / 1024 / 1024);
1002         table.contents[1][3] = strdup(buffer);
1003
1004         // total memory usage
1005         table.contents[2] = calloc(table.width, sizeof(char*));
1006         snprintf(buffer, sizeof(buffer), "Total Memory Usage  :");
1007         table.contents[2][0] = strdup(buffer);
1008         snprintf(buffer, sizeof(buffer), " %g Byte; ", size);
1009         table.contents[2][1] = strdup(buffer);
1010         snprintf(buffer, sizeof(buffer), "%g KiloByte; ", size / 1024);
1011         table.contents[2][2] = strdup(buffer);
1012         snprintf(buffer, sizeof(buffer), "%g MegaByte", size / 1024 / 1024);
1013         table.contents[2][3] = strdup(buffer);
1014
1015         table_send(spamserv, user->nick, 0, NULL, table);
1016
1017         for(i = 0; i < table.length; i++)
1018         {
1019                 for(j = 0; j < table.width; j++)
1020                         free((char*)table.contents[i][j]);
1021
1022         free(table.contents[i]);
1023         }
1024
1025         free(table.contents);
1026 }
1027
1028 static void
1029 show_registered_channels(struct userNode *user)
1030 {
1031         struct helpfile_table table;
1032         dict_iterator_t it;
1033
1034         spamserv_notice(user, "SSMSG_STATUS_CHANNEL_LIST");
1035
1036         if(!dict_size(registered_channels_dict))
1037         {
1038                 spamserv_notice(user, "SSMSG_STATUS_NO_CHANNEL");
1039                 return;
1040         }
1041
1042         table.length = 0;
1043         table.width = 1;
1044         table.flags = TABLE_REPEAT_ROWS | TABLE_NO_FREE | TABLE_NO_HEADERS;
1045         table.contents = alloca(dict_size(registered_channels_dict) * sizeof(*table.contents));
1046
1047         for(it = dict_first(registered_channels_dict); it; it = iter_next(it))
1048         {
1049                 struct chanInfo *cInfo = iter_data(it);
1050
1051                 table.contents[table.length] = alloca(table.width * sizeof(**table.contents));
1052                 table.contents[table.length][0] = cInfo->channel->name;
1053                 table.length++;
1054         }
1055
1056         table_send(spamserv, user->nick, 0, NULL, table);
1057 }
1058
1059 /***********************************************/
1060 /*                SpamServ_Func                */
1061 /***********************************************/
1062
1063 static
1064 SPAMSERV_FUNC(cmd_register)
1065 {
1066         struct chanInfo *cInfo;
1067
1068         if(!channel || !channel->channel_info)
1069         {
1070                 ss_reply("SSMSG_NOT_REGISTERED_CS", channel->name);
1071                 return 0;
1072         }
1073
1074         if(get_chanInfo(channel->name))
1075         {
1076                 ss_reply("SSMSG_ALREADY_REGISTERED", channel->name);
1077                 return 0;
1078         }
1079
1080         if(IsSuspended(channel->channel_info))
1081         {
1082                 ss_reply("SSMSG_SUSPENDED_CS", channel->name, "register");
1083                 return 0;
1084         }
1085
1086         if(channel == spamserv_conf.debug_channel)
1087         {
1088                 ss_reply("SSMSG_DEBUG_CHAN");
1089                 return 0;
1090         }
1091
1092         if(!(cInfo = spamserv_register_channel(channel, spamserv_conf.global_exceptions, CHAN_FLAGS_DEFAULT , CHAN_INFO_DEFAULT)))
1093         {
1094                 ss_reply("SSMSG_NO_REGISTER", channel->name);
1095                 return 0;
1096         }
1097
1098         spamserv_join_channel(cInfo->channel);
1099
1100         spamserv_oper_message(SSMSG_CHANNEL_REGISTERED, spamserv->nick, channel->name, user->handle_info->handle);
1101         ss_reply("SSMSG_REG_SUCCESS", channel->name);
1102
1103         return 1;
1104 }
1105
1106 static
1107 SPAMSERV_FUNC(cmd_unregister)
1108 {
1109         struct chanInfo *cInfo;
1110         struct chanData *cData;
1111         struct userData *uData;
1112         char reason[MAXLEN];
1113
1114         if(!channel || !(cData = channel->channel_info) || !(cInfo = get_chanInfo(channel->name)))
1115         {
1116                 ss_reply("SSMSG_NOT_REGISTERED", channel->name);
1117                 return 0;
1118         }
1119
1120         if(!(uData = GetChannelUser(cData, user->handle_info)) || (uData->access < UL_OWNER))
1121         {
1122         ss_reply("SSMSG_NO_ACCESS");
1123         return 0;
1124         }
1125
1126         if(!IsHelping(user))
1127         {
1128         if(IsSuspended(cData))
1129         {
1130             ss_reply("SSMSG_SUSPENDED_CS", channel->name, "unregister");
1131             return 0;
1132         }
1133
1134                 if(argc < 2 || strcasecmp(argv[1], "CONFIRM"))
1135                 {
1136                         ss_reply("SSMSG_CONFIRM_UNREG");
1137                         return 0;
1138                 }
1139         }
1140
1141         if(!CHECK_SUSPENDED(cInfo))
1142         {
1143                 snprintf(reason, sizeof(reason), "%s unregistered by %s.", spamserv->nick, user->handle_info->handle);
1144                 spamserv_part_channel(channel, reason);
1145         }
1146
1147         spamserv_unregister_channel(cInfo);
1148
1149         spamserv_oper_message(SSMSG_CHANNEL_UNREGISTERED, channel->name, user->handle_info->handle);
1150         ss_reply("SSMSG_UNREG_SUCCESS", channel->name);
1151
1152         return 1;
1153 }
1154
1155 static
1156 SPAMSERV_FUNC(cmd_status)
1157 {
1158         ss_reply("SSMSG_STATUS");
1159         ss_reply("SSMSG_STATUS_USERS", dict_size(connected_users_dict));
1160         ss_reply("SSMSG_STATUS_CHANNELS", dict_size(registered_channels_dict));
1161
1162         if(IsOper(user) && argc > 1)
1163         {
1164                 if(!irccasecmp(argv[1], "memory"))
1165                         show_memory_usage(user);
1166                 else if(!irccasecmp(argv[1], "channels"))
1167                         show_registered_channels(user);
1168         }
1169
1170         return 1;
1171 }
1172
1173 static
1174 SPAMSERV_FUNC(cmd_addexception)
1175 {
1176         struct chanInfo *cInfo = get_chanInfo(channel->name);
1177         struct userData *uData;
1178         unsigned int i;
1179
1180         if(!cInfo || !channel->channel_info)
1181         {
1182                 ss_reply("SSMSG_NOT_REGISTERED", channel->name);
1183                 return 0;
1184         }
1185
1186         if(CHECK_SUSPENDED(cInfo))
1187         {
1188                 ss_reply("SSMSG_SUSPENDED", channel->name);
1189                 return 0;
1190         }
1191
1192         if(!(uData = GetChannelUser(channel->channel_info, user->handle_info)) || (uData->access < 400))
1193         {
1194                 ss_reply("SSMSG_NO_ACCESS");
1195                 return 0;
1196         }
1197
1198         if(argc < 2)
1199                 return show_exceptions(user, cInfo);
1200
1201         if(cInfo->exceptions->used == spamserv_conf.exception_max && !IsOper(user))
1202         {
1203                 ss_reply("SSMSG_EXCEPTION_MAX", spamserv_conf.exception_max);
1204                 return 0;
1205         }
1206
1207         if(strlen(argv[1]) < spamserv_conf.exception_min_len)
1208         {
1209                 ss_reply("SSMSG_EXCEPTION_TOO_SHORT", spamserv_conf.exception_min_len);
1210                 return 0;
1211         }
1212         else if(strlen(argv[1]) > spamserv_conf.exception_max_len)
1213         {
1214                 ss_reply("SSMSG_EXCEPTION_TOO_LONG", spamserv_conf.exception_max_len);
1215                 return 0;
1216         }
1217
1218         for(i = 0; i < cInfo->exceptions->used; i++)
1219         {
1220                 if(!irccasecmp(argv[1], cInfo->exceptions->list[i]))
1221                 {
1222                         ss_reply("SSMSG_EXCEPTION_IN_LIST", argv[1]);
1223                         return 0;
1224                 }
1225         }
1226
1227         string_list_append(cInfo->exceptions, strdup(argv[1]));
1228         ss_reply("SSMSG_EXCEPTION_ADDED", argv[1]);
1229
1230         return 1;
1231 }
1232
1233 static
1234 SPAMSERV_FUNC(cmd_delexception)
1235 {
1236         struct chanInfo *cInfo = get_chanInfo(channel->name);
1237         struct userData *uData;
1238         unsigned int i;
1239         int found = -1;
1240
1241         if(!cInfo || !channel->channel_info)
1242         {
1243                 ss_reply("SSMSG_NOT_REGISTERED", channel->name);
1244                 return 0;
1245         }
1246
1247         if(CHECK_SUSPENDED(cInfo))
1248         {
1249                 ss_reply("SSMSG_SUSPENDED", channel->name);
1250                 return 0;
1251         }
1252
1253         if(!(uData = GetChannelUser(channel->channel_info, user->handle_info)) || (uData->access < 400))
1254         {
1255                 ss_reply("SSMSG_NO_ACCESS");
1256                 return 0;
1257         }
1258
1259         if(argc < 2)
1260                 return show_exceptions(user, cInfo);
1261
1262         for(i = 0; i < cInfo->exceptions->used; i++)
1263         {
1264                 if(!irccasecmp(argv[1], cInfo->exceptions->list[i]))
1265                 {
1266                         found = i;
1267                         break;
1268                 }
1269         }
1270
1271         if(found == -1)
1272         {
1273                 ss_reply("SSMSG_NO_SUCH_EXCEPTION", argv[1]);
1274                 return 0;
1275         }
1276
1277         string_list_delete(cInfo->exceptions, i);
1278         ss_reply("SSMSG_EXCEPTION_DELETED", argv[1]);
1279
1280         return 1;
1281 }
1282
1283 static
1284 SPAMSERV_FUNC(cmd_set)
1285 {
1286         struct chanInfo *cInfo = get_chanInfo(channel->name);
1287         struct svccmd   *subcmd;
1288         char cmd_name[MAXLEN];
1289         unsigned int i;
1290
1291         if(!cInfo)
1292         {
1293                 ss_reply("SSMSG_NOT_REGISTERED", channel->name);
1294                 return 0;
1295         }
1296
1297         if(CHECK_SUSPENDED(cInfo))
1298         {
1299                 ss_reply("SSMSG_SUSPENDED", channel->name);
1300                 return 0;
1301         }
1302
1303     if(!check_user_level(channel,user,lvlSetters,1,0))
1304         {
1305                 ss_reply("SSMSG_NO_ACCESS");
1306                 return 0;
1307         }
1308
1309         if(argc < 2)
1310         {
1311                 ss_reply("SSMSG_CHANNEL_OPTIONS");
1312
1313                 for(i = 0; i < SET_SUBCMDS_SIZE; i++)
1314                 {
1315                         sprintf(cmd_name, "%s %s", cmd->name, set_subcommands[i]);
1316
1317                         if((subcmd = dict_find(cmd->parent->commands, cmd_name, NULL)))
1318                                 subcmd->command->func(user, channel, 1, argv + 1, subcmd);
1319                 }
1320
1321                 return 1;
1322         }
1323
1324         sprintf(cmd_name, "%s %s", cmd->name, argv[1]);
1325         subcmd = dict_find(cmd->parent->commands, cmd_name, NULL);
1326
1327         if(!subcmd)
1328         {
1329                 reply("SSMSG_INVALID_OPTION", argv[1], argv[0]);
1330                 return 0;
1331         }
1332
1333         return subcmd->command->func(user, channel, argc - 1, argv + 1, subcmd);
1334 }
1335
1336 static
1337 SPAMSERV_FUNC(opt_spamlimit)
1338 {
1339         struct valueData values[] =
1340         {
1341                 {"Users may send the same message $b2$b times.", 'a', 0},
1342                 {"Users may send the same message $b3$b times.", 'b', 0},
1343                 {"Users may send the same message $b4$b times.", 'c', 0},
1344                 {"Users may send the same message $b5$b times.", 'd', 0},
1345                 {"Users may send the same message $b6$b times.", 'e', 0}
1346         };
1347
1348         MULTIPLE_OPTION("SpamLimit     ", "SpamLimit", ci_SpamLimit);
1349 }
1350
1351 static
1352 SPAMSERV_FUNC(opt_advreaction)
1353 {
1354         struct valueData values[] =
1355         {
1356                 {"Kick on disallowed advertising.", 'k', 0},
1357                 {"Kickban on disallowed advertising.", 'b', 0},
1358                 {"Short timed ban on disallowed advertising.", 's', 0},
1359                 {"Long timed ban on disallowed advertising.", 'l', 0},
1360                 {"Kill on disallowed advertising.", 'd', 1}
1361         };
1362
1363         MULTIPLE_OPTION("AdvReaction   ", "AdvReaction", ci_AdvReaction);
1364 }
1365
1366 static
1367 SPAMSERV_FUNC(opt_warnreaction)
1368 {
1369         struct valueData values[] =
1370         {
1371                 {"Kick after warning.", 'k', 0},
1372                 {"Kickban after warning.", 'b', 0},
1373                 {"Short timed ban after warning.", 's', 0},
1374                 {"Long timed ban after warning.", 'l', 0},
1375                 {"Kill after warning.", 'd', 1}
1376         };
1377
1378         MULTIPLE_OPTION("WarnReaction  ", "WarnReaction", ci_WarnReaction);
1379 }
1380
1381 static
1382 SPAMSERV_FUNC(opt_advscan)
1383 {
1384         BINARY_OPTION("AdvScan       ", CHAN_ADV_SCAN);
1385 }
1386
1387 static
1388 SPAMSERV_FUNC(opt_spamscan)
1389 {
1390         BINARY_OPTION("SpamScan      ", CHAN_SPAMSCAN);
1391 }
1392
1393 static
1394 SPAMSERV_FUNC(opt_floodscan)
1395 {
1396         BINARY_OPTION("FloodScan     ", CHAN_FLOODSCAN);
1397 }
1398
1399 static
1400 SPAMSERV_FUNC(opt_joinflood)
1401 {
1402         BINARY_OPTION("JoinFloodScan ", CHAN_JOINFLOOD);
1403 }
1404
1405 static
1406 SPAMSERV_FUNC(opt_scanops)
1407 {
1408         BINARY_OPTION("ScanChanOps   ", CHAN_SCAN_CHANOPS);
1409 }
1410
1411 static
1412 SPAMSERV_FUNC(opt_scanvoiced)
1413 {
1414         BINARY_OPTION("ScanVoiced    ", CHAN_SCAN_VOICED);
1415 }
1416
1417 static
1418 SPAMSERV_FUNC(opt_exceptlevel)
1419 {
1420  struct chanInfo *cInfo = get_chanInfo(channel->name);
1421  struct userData *uData;
1422  int index;
1423  if(argc > 1)
1424         {
1425                 index = atoi(argv[1]);
1426                 if(index < 1 || index > 501)
1427                 {
1428                         spamserv_notice(user, "SSMSG_INVALID_NUM_SET", index, "ExceptLevel");
1429                         return 0;
1430                 }
1431         if(!(uData = GetChannelUser(channel->channel_info, user->handle_info)) || (uData->access < cInfo->exceptlevel || index > uData->access))
1432         {
1433             ss_reply("SSMSG_NO_ACCESS");
1434             return 0;
1435         }
1436         cInfo->exceptlevel=index;
1437     } else {
1438      index=cInfo->exceptlevel;
1439     }
1440     spamserv_notice(user, "SSMSG_EASYNUMERIC_VALUE", "ExceptLevel   ", index);
1441     return 1;
1442 }
1443
1444 static void
1445 to_lower(char *message)
1446 {
1447         unsigned int i, diff = 'a' - 'A';
1448
1449         for(i = 0; i < strlen(message); i++)
1450         {
1451                 if((message[i] >= 'A') && (message[i] <= 'Z'))
1452                         message[i] = message[i] + diff;
1453         }
1454 }
1455
1456 static char *
1457 strip_mirc_codes(char *text)
1458 {
1459         // taken from xchat and modified
1460         int nc = 0, i = 0, col = 0, len = strlen(text);
1461         static char new_str[MAXLEN];
1462
1463         while(len > 0)
1464         {
1465                 if((col && isdigit(*text) && nc < 2) ||
1466                         (col && *text == ',' && isdigit(*(text + 1)) && nc < 3))
1467                 {
1468                         nc++;
1469
1470                         if(*text == ',')
1471                                 nc = 0;
1472                 }
1473                 else
1474                 {
1475                         col = 0;
1476
1477                         switch(*text)
1478                         {
1479                         case '\003':
1480                                 col = 1;
1481                                 nc = 0;
1482                                 break;
1483                         case '\002':
1484                         case '\022':
1485                         case '\026':
1486                         case '\031':
1487                         case '\037':
1488                                 break;
1489                         default:
1490                                 new_str[i] = *text;
1491                                 i++;
1492                         }
1493                 }
1494
1495                 text++;
1496                 len--;
1497         }
1498
1499         new_str[i] = '\0';
1500
1501         return new_str;
1502 }
1503
1504 static int
1505 is_in_exception_list(struct chanInfo *cInfo, char *message)
1506 {
1507         unsigned int i;
1508
1509         for(i = 0; i < cInfo->exceptions->used; i++)
1510                 if(strstr(message, cInfo->exceptions->list[i]))
1511                         return 1;
1512
1513         return 0;
1514 }
1515
1516 static int
1517 check_advertising(struct chanInfo *cInfo, char *message)
1518 {
1519         unsigned int i = 0;
1520
1521         if(spamserv_conf.strip_mirc_codes)
1522                 message = strip_mirc_codes(message);
1523
1524         if(is_in_exception_list(cInfo, message))
1525                 return 0;
1526
1527         while(message[i] != 0)
1528         {
1529                 if(message[i] == '#')
1530                 {
1531                         char channelname[CHANNELLEN];
1532                         unsigned int j = 0;
1533
1534                         if(!spamserv_conf.adv_chan_must_exist)
1535                                 return 1;
1536
1537                         /* only return 1, if the channel does exist */
1538
1539                         while((message[i] != 0) && (message[i] != ' '))
1540                         {
1541                                 channelname[j] = message[i];
1542                                 i++;
1543                                 j++;
1544                         }
1545
1546                         channelname[j] = '\0';
1547
1548                         if(GetChannel(channelname))
1549                                 return 1;
1550                 }
1551                 else if((message[i] == 'w') && (message[i+1] == 'w') && (message[i+2] == 'w') && (message[i+3] == '.'))
1552                         return 1;
1553                 else if((message[i] == 'h') && (message[i+1] == 't') && (message[i+2] == 't') && (message[i+3] == 'p') && (message[i+4] == ':'))
1554                         return 1;
1555                 else if((message[i] == 'f') && (message[i+1] == 't') && (message[i+2] == 'p') && ((message[i+3] == '.') || (message[i+3] == ':')))
1556                         return 1;
1557
1558                 i++;
1559         }
1560
1561         return 0;
1562 }
1563
1564 struct banData *add_channel_ban(struct chanData *channel, const char *mask, char *owner, unsigned long set, unsigned long triggered, unsigned long expires, char *reason);
1565
1566 static void
1567 spamserv_punish(struct chanNode *channel, struct userNode *user, time_t expires, char *reason, int ban)
1568 {
1569         if(ban)
1570         {
1571                 struct mod_chanmode change;
1572                 char *hostmask = generate_hostmask(user, GENMASK_STRICT_HOST | GENMASK_ANY_IDENT);
1573
1574                 sanitize_ircmask(hostmask);
1575
1576                 if(expires)
1577                         add_channel_ban(channel->channel_info, hostmask, spamserv->nick, now, now, now + expires, reason);
1578
1579                 mod_chanmode_init(&change);
1580                 change.argc = 1;
1581                 change.args[0].mode = MODE_BAN;
1582       change.args[0].u.hostmask = hostmask;
1583                 mod_chanmode_announce(spamserv, channel, &change);
1584
1585                 free(hostmask);
1586
1587                 spamserv_debug(SSMSG_DEBUG_BAN, user->nick, channel->name, reason);
1588         }
1589         else
1590                 spamserv_debug(SSMSG_DEBUG_KICK, user->nick, channel->name, reason);
1591
1592         KickChannelUser(user, channel, spamserv, reason);
1593 }
1594
1595 void
1596 spamserv_channel_message(struct chanNode *channel, struct userNode *user, char *text)
1597 {
1598         struct chanInfo *cInfo;
1599         struct userInfo *uInfo;
1600         struct spamNode *sNode;
1601         struct floodNode *fNode;
1602         unsigned int violation = 0;
1603         char reason[MAXLEN];
1604
1605         /* make sure: spamserv is not disabled; srvx is running; spamserv is in the chan; chan is regged, user does exist */
1606         if(!spamserv || quit_services || !GetUserMode(channel, spamserv) || !(cInfo = get_chanInfo(channel->name)) || !(uInfo = get_userInfo(user->nick)))
1607                 return;
1608
1609         if(IsOper(user))
1610         {
1611                 return;
1612         }
1613
1614         if(!CHECK_CHANOPS(cInfo))
1615         {
1616                 struct modeNode *mn = GetUserMode(channel, user);
1617                 if(mn && mn->modes & MODE_CHANOP)
1618                         return;
1619         //if(check_user_level(channel, user, lvlGiveOps, 1, 0))
1620         //    return;
1621         }
1622
1623         if(!CHECK_VOICED(cInfo))
1624         {
1625                 struct modeNode *mn = GetUserMode(channel, user);
1626                 if(mn && (mn->modes & MODE_VOICE) && !(mn->modes & MODE_CHANOP))
1627                         return;
1628         }
1629
1630     if(cInfo->exceptlevel == 0)
1631         return;
1632     if(cInfo->exceptlevel < 501) {
1633       struct userData *uData;
1634        if((uData = GetChannelUser(channel->channel_info, user->handle_info)) && (uData->access >= cInfo->exceptlevel)) {
1635         return;
1636        }
1637     }
1638
1639         to_lower(text);
1640
1641         if(CHECK_SPAM(cInfo))
1642         {
1643                 if(!(sNode = uInfo->spam))
1644                 {
1645                         spamserv_create_spamNode(channel, uInfo, text);
1646                 }
1647                 else
1648                 {
1649                         for(; sNode; sNode = sNode->next)
1650                                 if(sNode->channel == channel)
1651                                         break;
1652
1653                         if(!sNode)
1654                         {
1655                                 spamserv_create_spamNode(channel, uInfo, text);
1656                         }
1657                         else
1658                         {
1659                                 unsigned long crc = crc32(text);
1660
1661                                 if(crc == sNode->crc32)
1662                                 {
1663                                         unsigned int spamlimit = 2;
1664                                         sNode->count++;
1665
1666                                         switch(cInfo->info[ci_SpamLimit])
1667                                         {
1668                                                 case 'a': spamlimit = 2; break;
1669                                                 case 'b': spamlimit = 3; break;
1670                                                 case 'c': spamlimit = 4; break;
1671                                                 case 'd': spamlimit = 5; break;
1672                                                 case 'e': spamlimit = 6; break;
1673                                         }
1674
1675                                         if(sNode->count == spamlimit)
1676                                         {
1677                                                 uInfo->warnlevel += SPAM_WARNLEVEL;
1678
1679                                                 if(uInfo->warnlevel < MAX_WARNLEVEL)
1680                                                         spamserv_notice(user, spamserv_conf.network_rules ? SSMSG_WARNING_RULES : SSMSG_WARNING, SSMSG_SPAM, spamserv_conf.network_rules);
1681                                         }
1682                                         else if(sNode->count > spamlimit)
1683                                         {
1684                                                 switch(cInfo->info[ci_WarnReaction])
1685                                                 {
1686                                                         case 'k': uInfo->flags |= USER_KICK; break;
1687                                                         case 'b': uInfo->flags |= USER_KICKBAN; break;
1688                                                         case 's': uInfo->flags |= USER_SHORT_TBAN; break;
1689                                                         case 'l': uInfo->flags |= USER_LONG_TBAN; break;
1690                                                         case 'd': uInfo->flags |= CHECK_KILLED(uInfo) ? USER_GLINE : USER_KILL; break;
1691                                                 }
1692
1693                                                 spamserv_delete_spamNode(uInfo, sNode);
1694                                                 uInfo->warnlevel += SPAM_WARNLEVEL;
1695                                                 violation = 1;
1696                                         }
1697                                 }
1698                                 else
1699                                 {
1700                                         sNode->crc32 = crc;
1701                                         sNode->count = 1;
1702                                 }
1703                         }
1704                 }
1705         }
1706
1707         if(CHECK_FLOOD(cInfo))
1708         {
1709                 if(!(fNode = uInfo->flood))
1710                 {
1711                         spamserv_create_floodNode(channel, user, &uInfo->flood);
1712                 }
1713                 else
1714                 {
1715                         for(; fNode; fNode = fNode->next)
1716                                 if(fNode->channel == channel)
1717                                         break;
1718
1719                         if(!fNode)
1720                         {
1721                                 spamserv_create_floodNode(channel, user, &uInfo->flood);
1722                         }
1723                         else
1724                         {
1725                                 if(((now - fNode->time) < FLOOD_EXPIRE))
1726                                 {
1727                                         fNode->count++;
1728
1729                                         if(fNode->count == FLOOD_MAX_LINES - 1)
1730                                         {
1731                                                 uInfo->warnlevel += FLOOD_WARNLEVEL;
1732
1733                                                 if(uInfo->warnlevel < MAX_WARNLEVEL)
1734                                                         spamserv_notice(user, spamserv_conf.network_rules ? SSMSG_WARNING_RULES : SSMSG_WARNING, SSMSG_FLOOD, spamserv_conf.network_rules);
1735                                         }
1736                                         else if(fNode->count > FLOOD_MAX_LINES)
1737                                         {
1738                                                 switch(cInfo->info[ci_WarnReaction])
1739                                                 {
1740                                                         case 'k': uInfo->flags |= USER_KICK; break;
1741                                                         case 'b': uInfo->flags |= USER_KICKBAN; break;
1742                                                         case 's': uInfo->flags |= USER_SHORT_TBAN; break;
1743                                                         case 'l': uInfo->flags |= USER_LONG_TBAN; break;
1744                                                         case 'd': uInfo->flags |= CHECK_KILLED(uInfo) ? USER_GLINE : USER_KILL; break;
1745                                                 }
1746
1747                                                 spamserv_delete_floodNode(&uInfo->flood, fNode);
1748                                                 uInfo->warnlevel += FLOOD_WARNLEVEL;
1749                                                 violation = 2;
1750                                         }
1751                                 }
1752
1753                                 fNode->time = now;
1754                         }
1755                 }
1756         }
1757
1758         if(CHECK_ADV(cInfo) && check_advertising(cInfo, text))
1759         {
1760                 if(CHECK_ADV_WARNED(uInfo))
1761                 {
1762                         switch(cInfo->info[ci_AdvReaction])
1763                         {
1764                                 case 'k': uInfo->flags |= USER_KICK; break;
1765                                 case 'b': uInfo->flags |= USER_KICKBAN; break;
1766                                 case 's': uInfo->flags |= USER_SHORT_TBAN; break;
1767                                 case 'l': uInfo->flags |= USER_LONG_TBAN; break;
1768                                 case 'd': uInfo->flags |= CHECK_KILLED(uInfo) ? USER_GLINE : USER_KILL; break;
1769                         }
1770
1771                         uInfo->warnlevel += ADV_WARNLEVEL;
1772                         violation = 3;
1773                 }
1774                 else
1775                 {
1776                         uInfo->flags |= USER_ADV_WARNED;
1777                         uInfo->lastadv = now;
1778                         uInfo->warnlevel += ADV_WARNLEVEL;
1779
1780                         if(uInfo->warnlevel < MAX_WARNLEVEL)
1781                                 spamserv_notice(user, spamserv_conf.network_rules ? SSMSG_WARNING_RULES : SSMSG_WARNING, SSMSG_ADV, spamserv_conf.network_rules);
1782                 }
1783         }
1784
1785         if(!CHECK_WARNED(uInfo) && !CHECK_KILL(uInfo) && !CHECK_GLINE(uInfo) && uInfo->warnlevel == MAX_WARNLEVEL)
1786         {
1787                 uInfo->flags |= USER_WARNED;
1788                 snprintf(reason, sizeof(reason), spamserv_conf.network_rules ? SSMSG_WARNING_RULES_2 : SSMSG_WARNING_2, spamserv_conf.network_rules);
1789                 irc_notice(spamserv, user->numeric, reason);
1790                 irc_privmsg(spamserv, user->numeric, reason);
1791         }
1792         else if(uInfo->warnlevel > MAX_WARNLEVEL)
1793         {
1794                 if(CHECK_KILLED(uInfo))
1795                         uInfo->flags |= USER_GLINE;
1796                 else
1797                         uInfo->flags |= USER_KILL;
1798
1799                 violation = 5;
1800         }
1801
1802         if(!violation)
1803                 return;
1804
1805         switch(violation)
1806         {
1807                 case 1: snprintf(reason, sizeof(reason), spamserv_conf.network_rules ? SSMSG_WARNING_RULES : SSMSG_WARNING, SSMSG_SPAM, spamserv_conf.network_rules); break;
1808                 case 2: snprintf(reason, sizeof(reason), spamserv_conf.network_rules ? SSMSG_WARNING_RULES : SSMSG_WARNING, SSMSG_FLOOD, spamserv_conf.network_rules); break;
1809                 case 3: snprintf(reason, sizeof(reason), spamserv_conf.network_rules ? SSMSG_WARNING_RULES : SSMSG_WARNING, SSMSG_ADV, spamserv_conf.network_rules); break;
1810                 default: snprintf(reason, sizeof(reason), spamserv_conf.network_rules ? SSMSG_WARNING_RULES_2 : SSMSG_WARNING_2, spamserv_conf.network_rules); break;
1811         }
1812
1813         if(CHECK_GLINE(uInfo))
1814         {
1815                 int size = strlen(user->hostname) + 3;
1816                 char *mask = alloca(size);
1817                 snprintf(mask, size, "*@%s", user->hostname);
1818                 gline_add(spamserv->nick, mask, spamserv_conf.gline_duration, reason, now, now, 0, 1);
1819                 spamserv_debug(SSMSG_DEBUG_GLINE, user->nick, user->hostname, channel->name);
1820         }
1821         else if(CHECK_KILL(uInfo))
1822         {
1823                 DelUser(user, spamserv, 1, reason);
1824                 spamserv_debug(SSMSG_DEBUG_KILL, user->nick, channel->name);
1825         }
1826         else if(CHECK_LONG_TBAN(uInfo))
1827         {
1828                 spamserv_punish(channel, user, spamserv_conf.long_ban_duration, reason, 1);
1829         }
1830         else if(CHECK_SHORT_TBAN(uInfo))
1831         {
1832                 spamserv_punish(channel, user, spamserv_conf.short_ban_duration, reason, 1);
1833         }
1834         else if(CHECK_KICKBAN(uInfo))
1835         {
1836                 spamserv_punish(channel, user, 0, reason, 1);
1837         }
1838         else if(CHECK_KICK(uInfo))
1839         {
1840                 spamserv_punish(channel, user, 0, reason, 0);
1841         }
1842 }
1843
1844 static int
1845 spamserv_saxdb_read(struct dict *database)
1846 {
1847         dict_iterator_t it;
1848         struct record_data *hir;
1849         struct chanNode *channel;
1850         struct chanInfo *cInfo;
1851         struct string_list *strlist;
1852         unsigned int flags,exceptlevel;
1853         char *str, *info;
1854         unsigned long expiry;
1855
1856         for(it = dict_first(database); it; it = iter_next(it))
1857         {
1858                 hir = iter_data(it);
1859
1860                 if(hir->type != RECDB_OBJECT)
1861                 {
1862                         log_module(SS_LOG, LOG_WARNING, "Unexpected rectype %d for %s.", hir->type, iter_key(it));
1863                         continue;
1864                 }
1865
1866                 channel = GetChannel(iter_key(it));
1867                 strlist = database_get_data(hir->d.object, KEY_EXCEPTIONS, RECDB_STRING_LIST);
1868
1869                 str = database_get_data(hir->d.object, KEY_FLAGS, RECDB_QSTRING);
1870                 flags = str ? atoi(str) : 0;
1871
1872                 info = database_get_data(hir->d.object, KEY_INFO, RECDB_QSTRING);
1873         str = database_get_data(hir->d.object, KEY_EXCEPTLEVEL, RECDB_QSTRING);
1874         exceptlevel = str ? atoi(str) : 400;
1875
1876                 str = database_get_data(hir->d.object, KEY_EXPIRY, RECDB_QSTRING);
1877                 expiry = str ? strtoul(str, NULL, 0) : 0;
1878
1879                 if(channel && info)
1880                 {
1881                         if((cInfo = spamserv_register_channel(channel, strlist, flags, info)))
1882                         {
1883                                 /* if the channel is suspended and expiry = 0 it means: channel will
1884                                    never expire ! it does NOT mean, the channel is not suspended */
1885                                 if(CHECK_SUSPENDED(cInfo) && expiry && (expiry < now))
1886                                 {
1887                                         cInfo->flags &= ~CHAN_SUSPENDED;
1888                                         spamserv_join_channel(cInfo->channel);
1889                                 }
1890                                 else if(!CHECK_SUSPENDED(cInfo))
1891                                         spamserv_join_channel(cInfo->channel);
1892                                 else
1893                                         cInfo->suspend_expiry = expiry;
1894                 cInfo->exceptlevel=exceptlevel;
1895                         }
1896                 }
1897                 else
1898                         log_module(SS_LOG, LOG_ERROR, "Couldn't register channel %s. Channel or info invalid.", iter_key(it));
1899         }
1900
1901         return 0;
1902 }
1903
1904 static int
1905 spamserv_saxdb_write(struct saxdb_context *ctx)
1906 {
1907         dict_iterator_t it;
1908
1909         for(it = dict_first(registered_channels_dict); it; it = iter_next(it))
1910         {
1911                 struct chanInfo *cInfo = iter_data(it);
1912
1913                 saxdb_start_record(ctx, cInfo->channel->name, 1);
1914
1915                 if(cInfo->exceptions->used)
1916                         saxdb_write_string_list(ctx, KEY_EXCEPTIONS, cInfo->exceptions);
1917
1918                 if(cInfo->flags)
1919                         saxdb_write_int(ctx, KEY_FLAGS, cInfo->flags);
1920
1921                 saxdb_write_string(ctx, KEY_INFO, cInfo->info);
1922         saxdb_write_int(ctx, KEY_EXCEPTLEVEL, cInfo->exceptlevel);
1923
1924                 if(cInfo->suspend_expiry)
1925                         saxdb_write_int(ctx, KEY_EXPIRY, cInfo->suspend_expiry);
1926
1927                 saxdb_end_record(ctx);
1928         }
1929         return 0;
1930 }
1931
1932 static void
1933 spamserv_conf_read(void)
1934 {
1935         dict_t conf_node;
1936         const char *str;
1937
1938         if(!(conf_node = conf_get_data(SPAMSERV_CONF_NAME, RECDB_OBJECT)))
1939         {
1940                 log_module(SS_LOG, LOG_ERROR, "config node `%s' is missing or has wrong type.", SPAMSERV_CONF_NAME);
1941                 return;
1942         }
1943
1944         str = database_get_data(conf_node, KEY_DEBUG_CHANNEL, RECDB_QSTRING);
1945         if(str)
1946         {
1947                 spamserv_conf.debug_channel = AddChannel(str, now, "+tinms", NULL);
1948
1949                 if(spamserv_conf.debug_channel)
1950                         spamserv_join_channel(spamserv_conf.debug_channel);
1951         }
1952         else
1953         {
1954                 spamserv_conf.debug_channel = NULL;
1955         }
1956
1957         str = database_get_data(conf_node, KEY_OPER_CHANNEL, RECDB_QSTRING);
1958         if(str)
1959         {
1960                 spamserv_conf.oper_channel = AddChannel(str, now, "+tinms", NULL);
1961         }
1962         else
1963         {
1964                 spamserv_conf.oper_channel = NULL;
1965         }
1966
1967         spamserv_conf.global_exceptions = database_get_data(conf_node, KEY_GLOBAL_EXCEPTIONS, RECDB_STRING_LIST);
1968
1969         str = database_get_data(conf_node, KEY_NETWORK_RULES, RECDB_QSTRING);
1970         spamserv_conf.network_rules = str ? str : NULL;
1971
1972         str = database_get_data(conf_node, KEY_TRIGGER, RECDB_QSTRING);
1973         spamserv_conf.trigger = str ? str[0] : 0;
1974
1975         str = database_get_data(conf_node, KEY_SHORT_BAN_DURATION, RECDB_QSTRING);
1976         spamserv_conf.short_ban_duration = str ? ParseInterval(str) : ParseInterval("15m");
1977
1978         str = database_get_data(conf_node, KEY_LONG_BAN_DURATION, RECDB_QSTRING);
1979         spamserv_conf.long_ban_duration = str ? ParseInterval(str) : ParseInterval("1h");
1980
1981         str = database_get_data(conf_node, KEY_GLINE_DURATION, RECDB_QSTRING);
1982         spamserv_conf.gline_duration = str ? ParseInterval(str) : ParseInterval("1h");
1983
1984         str = database_get_data(conf_node, KEY_EXCEPTION_MAX, RECDB_QSTRING);
1985         spamserv_conf.exception_max = str ? strtoul(str, NULL, 0) : 10;
1986
1987         str = database_get_data(conf_node, KEY_EXCEPTION_MIN_LEN, RECDB_QSTRING);
1988         spamserv_conf.exception_min_len = str ? strtoul(str, NULL, 0) : 4;
1989
1990         str = database_get_data(conf_node, KEY_EXCEPTION_MAX_LEN, RECDB_QSTRING);
1991         spamserv_conf.exception_max_len = str ? strtoul(str, NULL, 0) : 15;
1992
1993         str = database_get_data(conf_node, KEY_ADV_CHAN_MUST_EXIST, RECDB_QSTRING);
1994         spamserv_conf.adv_chan_must_exist = str ? enabled_string(str) : 1;
1995
1996         str = database_get_data(conf_node, KEY_STRIP_MIRC_CODES, RECDB_QSTRING);
1997         spamserv_conf.strip_mirc_codes = str ? enabled_string(str) : 0;
1998
1999         str = database_get_data(conf_node, KEY_ALLOW_MOVE_MERGE, RECDB_QSTRING);
2000         spamserv_conf.allow_move_merge = str ? enabled_string(str) : 0;
2001 }
2002
2003 static void
2004 spamserv_db_cleanup(void)
2005 {
2006         dict_iterator_t it;
2007
2008         while((it = dict_first(registered_channels_dict)))
2009         {
2010                 spamserv_unregister_channel(iter_data(it));
2011         }
2012
2013         while((it = dict_first(killed_users_dict)))
2014         {
2015                 free(iter_data(it));
2016         }
2017
2018         dict_delete(registered_channels_dict);
2019         dict_delete(connected_users_dict);
2020         dict_delete(killed_users_dict);
2021 }
2022
2023 void
2024 init_spamserv(const char *nick)
2025 {
2026         if(!nick)
2027                 return;
2028
2029         const char *modes = conf_get_data("services/spamserv/modes", RECDB_QSTRING);
2030         spamserv = AddLocalUser(nick, nick, NULL, "Anti Spam Services", modes);
2031         spamserv_service = service_register(spamserv);
2032         service_register(spamserv)->trigger = spamserv_conf.trigger;
2033
2034         conf_register_reload(spamserv_conf_read);
2035
2036         SS_LOG = log_register_type("SpamServ", "file:spamserv.log");
2037
2038         registered_channels_dict = dict_new();
2039         connected_users_dict = dict_new();
2040         killed_users_dict = dict_new();
2041
2042         reg_new_user_func(spamserv_new_user_func);
2043         reg_del_user_func(spamserv_del_user_func);
2044         reg_nick_change_func(spamserv_nick_change_func);
2045         reg_join_func(spamserv_user_join);
2046         reg_part_func(spamserv_user_part);
2047
2048         timeq_add(now + FLOOD_TIMEQ_FREQ, timeq_flood, NULL);
2049         timeq_add(now + JOINFLOOD_TIMEQ_FREQ, timeq_joinflood, NULL);
2050         timeq_add(now + ADV_TIMEQ_FREQ, timeq_adv, NULL);
2051         timeq_add(now + WARNLEVEL_TIMEQ_FREQ, timeq_warnlevel, NULL);
2052         timeq_add(now + KILL_TIMEQ_FREQ, timeq_kill, NULL);
2053
2054         spamserv_module = module_register("SpamServ", SS_LOG, "spamserv.help", NULL);
2055         modcmd_register(spamserv_module, "REGISTER", cmd_register, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, "flags", "+acceptchan,+helping", NULL);
2056         modcmd_register(spamserv_module, "UNREGISTER", cmd_unregister, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, "flags", "+loghostmask", NULL);
2057         modcmd_register(spamserv_module, "ADDEXCEPTION", cmd_addexception, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2058         modcmd_register(spamserv_module, "DELEXCEPTION", cmd_delexception, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2059         modcmd_register(spamserv_module, "STATUS", cmd_status, 1, 0, NULL);
2060         modcmd_register(spamserv_module, "SET", cmd_set, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2061         modcmd_register(spamserv_module, "SET SPAMLIMIT", opt_spamlimit, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2062         modcmd_register(spamserv_module, "SET ADVREACTION", opt_advreaction, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2063         modcmd_register(spamserv_module, "SET WARNREACTION", opt_warnreaction, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2064         modcmd_register(spamserv_module, "SET ADVSCAN", opt_advscan, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2065         modcmd_register(spamserv_module, "SET SPAMSCAN", opt_spamscan, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2066         modcmd_register(spamserv_module, "SET FLOODSCAN", opt_floodscan, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2067         modcmd_register(spamserv_module, "SET JOINFLOODSCAN", opt_joinflood, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2068         modcmd_register(spamserv_module, "SET SCANCHANOPS", opt_scanops, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2069         modcmd_register(spamserv_module, "SET SCANVOICED", opt_scanvoiced, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2070     modcmd_register(spamserv_module, "SET EXCEPTLEVEL", opt_exceptlevel, 1, MODCMD_REQUIRE_AUTHED|MODCMD_REQUIRE_CHANNEL, NULL);
2071
2072         saxdb_register("SpamServ", spamserv_saxdb_read, spamserv_saxdb_write);
2073         reg_exit_func(spamserv_db_cleanup);
2074         message_register_table(msgtab);
2075         crc32_init();
2076 }