src/channels.cpp

   1 /*   +------------------------------------+
   2  *   | Inspire Internet Relay Chat Daemon |
   3  *   +------------------------------------+
   4  *
   5  *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
   6  *   E-mail:
   7  *        <brain@chatspike.net>
   8  *        <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *      the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 using namespace std;
  18
  19 #include "inspircd_config.h"
  20 #include "inspircd.h"
  21 #include "inspircd_io.h"
  22 #include <unistd.h>
  23 #include <sys/errno.h>
  24 #include <sys/ioctl.h>
  25 #include <sys/utsname.h>
  26 #include <time.h>
  27 #include <string>
  28 #ifdef GCC3
  29 #include <ext/hash_map>
  30 #else
  31 #include <hash_map>
  32 #endif
  33 #include <map>
  34 #include <sstream>
  35 #include <vector>
  36 #include <deque>
  37 #include "users.h"
  38 #include "ctables.h"
  39 #include "globals.h"
  40 #include "modules.h"
  41 #include "dynamic.h"
  42 #include "commands.h"
  43 #include "wildcard.h"
  44 #include "message.h"
  45 #include "mode.h"
  46 #include "xline.h"
  47 #include "inspstring.h"
  48 #include "helperfuncs.h"
  49 #include "typedefs.h"
  50
  51 #ifdef GCC3
  52 #define nspace __gnu_cxx
  53 #else
  54 #define nspace std
  55 #endif
  56
  57 extern ServerConfig* Config;
  58
  59 extern int MODCOUNT;
  60 extern std::vector<Module*> modules;
  61 extern std::vector<ircd_module*> factory;
  62 extern int WHOWAS_STALE;
  63 extern int WHOWAS_MAX;
  64 extern time_t TIME;
  65 extern chan_hash chanlist;
  66
  67 using namespace std;
  68
  69 //std::vector<ModeParameter> custom_mode_params;
  70
  71 chanrec* ForceChan(chanrec* Ptr,ucrec &a,userrec* user, int created);
  72
  73 chanrec::chanrec()
  74 {
  75         *name = *custom_modes = *topic = *setby = *key = 0;
  76         created = topicset = limit = binarymodes = 0;
  77         internal_userlist.clear();
  78 }
  79
  80 void chanrec::SetCustomMode(char mode,bool mode_on)
  81 {
  82         if (mode_on)
  83         {
  84                 char* mptr = this->custom_modes;
  85                 int ssize = 0;
  86
  87                 /* Attempt to find the end of the mode string */
  88                 while (*mptr++)
  89                 {
  90                         /* While iterating the mode string, we found that they already have
  91                          * this mode in their list. Abort right now. */
  92                         if (*mptr == mode)
  93                                 return;
  94                         /* Increment the string size, saves us doing strlen */
  95                         ssize++;
  96                 }
  97
  98                 log(DEBUG,"ssize=%d",ssize);
  99
 100                 /* Is there room left in the buffer? If there is append the mode */
 101                 if (ssize < MAXMODES-1)
 102                 {
 103                         *--mptr = mode;
 104                         *++mptr = 0;
 105                 }
 106
 107                 log(DEBUG,"Custom mode %c set, modes='%s'",mode,this->custom_modes);
 108         }
 109         else
 110         {
 111                 if (charremove(this->custom_modes,mode))
 112                 {
 113                         log(DEBUG,"Custom mode %c removed: modelist='%s'",mode,this->custom_modes);
 114                         /* Only call this if we found the mode */
 115                         this->SetCustomModeParam(mode,"",false);
 116                 }
 117         }
 118 }
 119
 120
 121 void chanrec::SetCustomModeParam(char mode,char* parameter,bool mode_on)
 122 {
 123
 124         log(DEBUG,"SetCustomModeParam called");
 125         ModeParameter M;
 126         M.mode = mode;
 127         strlcpy(M.channel,this->name,CHANMAX);
 128         strlcpy(M.parameter,parameter,MAXBUF);
 129         if (mode_on)
 130         {
 131                 log(DEBUG,"Custom mode parameter %c %s added",mode,parameter);
 132                 custom_mode_params.push_back(M);
 133         }
 134         else
 135         {
 136                 if (custom_mode_params.size())
 137                 {
 138                         for (vector<ModeParameter>::iterator i = custom_mode_params.begin(); i < custom_mode_params.end(); i++)
 139                         {
 140                                 if ((i->mode == mode) && (!strcasecmp(this->name,i->channel)))
 141                                 {
 142                                         log(DEBUG,"Custom mode parameter %c %s removed",mode,parameter);
 143                                         custom_mode_params.erase(i);
 144                                         return;
 145                                 }
 146                         }
 147                 }
 148         }
 149 }
 150
 151 bool chanrec::IsCustomModeSet(char mode)
 152 {
 153         return (strchr(this->custom_modes,mode));
 154 }
 155
 156 std::string chanrec::GetModeParameter(char mode)
 157 {
 158         if (custom_mode_params.size())
 159         {
 160                 for (vector<ModeParameter>::iterator i = custom_mode_params.begin(); i < custom_mode_params.end(); i++)
 161                 {
 162                         if ((i->mode == mode) && (!strcasecmp(this->name,i->channel)))
 163                         {
 164                                 return i->parameter;
 165                         }
 166                 }
 167         }
 168         return "";
 169 }
 170
 171 long chanrec::GetUserCounter()
 172 {
 173         return (this->internal_userlist.size());
 174 }
 175
 176 void chanrec::AddUser(char* castuser)
 177 {
 178         internal_userlist[castuser] = castuser;
 179         log(DEBUG,"Added casted user to channel's internal list");
 180 }
 181
 182 void chanrec::DelUser(char* castuser)
 183 {
 184         std::map<char*,char*>::iterator a = internal_userlist.find(castuser);
 185         if (a != internal_userlist.end())
 186         {
 187                 log(DEBUG,"Removed casted user from channel's internal list");
 188                 internal_userlist.erase(a);
 189                 /* And tidy any others... */
 190                 DelOppedUser(castuser);
 191                 DelHalfoppedUser(castuser);
 192                 DelVoicedUser(castuser);
 193                 return;
 194         }
 195 }
 196
 197 void chanrec::AddOppedUser(char* castuser)
 198 {
 199         internal_op_userlist[castuser] = castuser;
 200         log(DEBUG,"Added casted user to channel's internal list");
 201 }
 202
 203 void chanrec::DelOppedUser(char* castuser)
 204 {
 205         std::map<char*,char*>::iterator a = internal_op_userlist.find(castuser);
 206         if (a != internal_op_userlist.end())
 207         {
 208                 log(DEBUG,"Removed casted user from channel's internal list");
 209                 internal_op_userlist.erase(a);
 210                 return;
 211         }
 212 }
 213
 214 void chanrec::AddHalfoppedUser(char* castuser)
 215 {
 216         internal_halfop_userlist[castuser] = castuser;
 217         log(DEBUG,"Added casted user to channel's internal list");
 218 }
 219
 220 void chanrec::DelHalfoppedUser(char* castuser)
 221 {
 222         std::map<char*,char*>::iterator a = internal_halfop_userlist.find(castuser);
 223         if (a != internal_halfop_userlist.end())
 224         {
 225                 log(DEBUG,"Removed casted user from channel's internal list");
 226                 internal_halfop_userlist.erase(a);
 227                 return;
 228         }
 229 }
 230
 231 void chanrec::AddVoicedUser(char* castuser)
 232 {
 233         internal_voice_userlist[castuser] = castuser;
 234         log(DEBUG,"Added casted user to channel's internal list");
 235 }
 236
 237 void chanrec::DelVoicedUser(char* castuser)
 238 {
 239         std::map<char*,char*>::iterator a = internal_voice_userlist.find(castuser);
 240         if (a != internal_voice_userlist.end())
 241         {
 242                 log(DEBUG,"Removed casted user from channel's internal list");
 243                 internal_voice_userlist.erase(a);
 244                 return;
 245         }
 246 }
 247
 248 std::map<char*,char*> *chanrec::GetUsers()
 249 {
 250         return &internal_userlist;
 251 }
 252
 253 std::map<char*,char*> *chanrec::GetOppedUsers()
 254 {
 255         return &internal_op_userlist;
 256 }
 257
 258 std::map<char*,char*> *chanrec::GetHalfoppedUsers()
 259 {
 260         return &internal_halfop_userlist;
 261 }
 262
 263 std::map<char*,char*> *chanrec::GetVoicedUsers()
 264 {
 265         return &internal_voice_userlist;
 266 }
 267
 268 /*
 269  * add a channel to a user, creating the record for it if needed and linking
 270  * it to the user record
 271  */
 272
 273 chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override)
 274 {
 275         if ((!user) || (!cn))
 276         {
 277                 log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
 278                 return 0;
 279         }
 280
 281         int created = 0;
 282         char cname[MAXBUF];
 283         int MOD_RESULT = 0;
 284         strlcpy(cname,cn,CHANMAX);
 285         log(DEBUG,"cname='%s' cn='%s'",cname,cn);
 286
 287         log(DEBUG,"add_channel: %s %s",user->nick,cname);
 288
 289         chanrec* Ptr = FindChan(cname);
 290
 291         if (!Ptr)
 292         {
 293                 if (user->fd > -1)
 294                 {
 295                         MOD_RESULT = 0;
 296                         FOREACH_RESULT(I_OnUserPreJoin,OnUserPreJoin(user,NULL,cname));
 297                         if (MOD_RESULT == 1)
 298                                 return NULL;
 299                 }
 300
 301                 /* create a new one */
 302                 chanlist[cname] = new chanrec();
 303                 strlcpy(chanlist[cname]->name, cname,CHANMAX);
 304                 chanlist[cname]->binarymodes = CM_TOPICLOCK | CM_NOEXTERNAL;
 305                 chanlist[cname]->created = TIME;
 306                 *chanlist[cname]->topic = 0;
 307                 strlcpy(chanlist[cname]->setby, user->nick,NICKMAX-1);
 308                 chanlist[cname]->topicset = 0;
 309                 Ptr = chanlist[cname];
 310                 log(DEBUG,"add_channel: created: %s",cname);
 311                 /*
 312                  * set created to 2 to indicate user
 313                  * is the first in the channel
 314                  * and should be given ops
 315                  */
 316                 created = 2;
 317         }
 318         else
 319         {
 320                 /* Already on the channel */
 321                 if (has_channel(user,Ptr))
 322                         return NULL;
 323
 324                 /*
 325                  * remote users are allowed us to bypass channel modes
 326                  * and bans (used by servers)
 327                  */
 328                 if (IS_LOCAL(user)) /* was a check on fd > -1 */
 329                 {
 330                         MOD_RESULT = 0;
 331                         FOREACH_RESULT(I_OnUserPreJoin,OnUserPreJoin(user,Ptr,cname));
 332                         if (MOD_RESULT == 1)
 333                         {
 334                                 return NULL;
 335                         }
 336                         else if (MOD_RESULT == 0)
 337                         {
 338                                 if (*Ptr->key)
 339                                 {
 340                                         MOD_RESULT = 0;
 341                                         FOREACH_RESULT(I_OnCheckKey,OnCheckKey(user, Ptr, key ? key : ""));
 342                                         if (!MOD_RESULT)
 343                                         {
 344                                                 if (!key)
 345                                                 {
 346                                                         log(DEBUG,"add_channel: no key given in JOIN");
 347                                                         WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
 348                                                         return NULL;
 349                                                 }
 350                                                 else
 351                                                 {
 352                                                         if (strcmp(key,Ptr->key))
 353                                                         {
 354                                                                 log(DEBUG,"add_channel: bad key given in JOIN");
 355                                                                 WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
 356                                                                 return NULL;
 357                                                         }
 358                                                 }
 359                                         }
 360                                 }
 361                                 if (Ptr->binarymodes & CM_INVITEONLY)
 362                                 {
 363                                         MOD_RESULT = 0;
 364                                         irc::string xname(Ptr->name);
 365                                         FOREACH_RESULT(I_OnCheckInvite,OnCheckInvite(user, Ptr));
 366                                         if (!MOD_RESULT)
 367                                         {
 368                                                 log(DEBUG,"add_channel: channel is +i");
 369                                                 if (user->IsInvited(xname))
 370                                                 {
 371                                                         /* user was invited to channel */
 372                                                         /* there may be an optional channel NOTICE here */
 373                                                 }
 374                                                 else
 375                                                 {
 376                                                         WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
 377                                                         return NULL;
 378                                                 }
 379                                         }
 380                                         user->RemoveInvite(xname);
 381                                 }
 382                                 if (Ptr->limit)
 383                                 {
 384                                         MOD_RESULT = 0;
 385                                         FOREACH_RESULT(I_OnCheckLimit,OnCheckLimit(user, Ptr));
 386                                         if (!MOD_RESULT)
 387                                         {
 388                                                 if (usercount(Ptr) >= Ptr->limit)
 389                                                 {
 390                                                         WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
 391                                                         return NULL;
 392                                                 }
 393                                         }
 394                                 }
 395                                 if (Ptr->bans.size())
 396                                 {
 397                                         log(DEBUG,"add_channel: about to walk banlist");
 398                                         MOD_RESULT = 0;
 399                                         FOREACH_RESULT(I_OnCheckBan,OnCheckBan(user, Ptr));
 400                                         if (!MOD_RESULT)
 401                                         {
 402                                                 for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
 403                                                 {
 404                                                         if ((match(user->GetFullHost(),i->data)) || (match(user->GetFullRealHost(),i->data)) || (match((char*)inet_ntoa(user->ip4),i->data)))
 405                                                         {
 406                                                                 WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
 407                                                                 return NULL;
 408                                                         }
 409                                                 }
 410                                         }
 411                                 }
 412                         }
 413                 }
 414                 else
 415                 {
 416                         log(DEBUG,"Overridden checks");
 417                 }
 418                 created = 1;
 419         }
 420
 421         log(DEBUG,"Passed channel checks");
 422
 423         for (unsigned int index =0; index < user->chans.size(); index++)
 424         {
 425                 if (user->chans[index].channel == NULL)
 426                 {
 427                         return ForceChan(Ptr,user->chans[index],user,created);
 428                 }
 429         }
 430
 431         /*
 432          * XXX: If the user is an oper here, we can just extend their user->chans vector by one
 433          * and put the channel in here. Same for remote users which are not bound by
 434          * the channel limits. Otherwise, nope, youre boned.
 435          */
 436         if (!IS_LOCAL(user)) /* was a check on fd < 0 */
 437         {
 438                 ucrec a;
 439                 chanrec* c = ForceChan(Ptr,a,user,created);
 440                 user->chans.push_back(a);
 441                 return c;
 442         }
 443         else if (*user->oper)
 444         {
 445                 /* Oper allows extension up to the OPERMAXCHANS value */
 446                 if (user->chans.size() < OPERMAXCHANS)
 447                 {
 448                         ucrec a;
 449                         chanrec* c = ForceChan(Ptr,a,user,created);
 450                         user->chans.push_back(a);
 451                         return c;
 452                 }
 453         }
 454
 455         log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
 456         WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
 457
 458         if (created == 2)
 459         {
 460                 log(DEBUG,"BLAMMO, Whacking channel.");
 461                 /* Things went seriously pear shaped, so take this away. bwahaha. */
 462                 chan_hash::iterator n = chanlist.find(cname);
 463                 if (n != chanlist.end())
 464                 {
 465                         Ptr->DelUser((char*)user);
 466                         delete Ptr;
 467                         chanlist.erase(n);
 468                         for (unsigned int index =0; index < user->chans.size(); index++)
 469                         {
 470                                 if (user->chans[index].channel == Ptr)
 471                                 {
 472                                         user->chans[index].channel = NULL;
 473                                         user->chans[index].uc_modes = 0;
 474                                 }
 475                         }
 476                 }
 477         }
 478         return NULL;
 479 }
 480
 481 chanrec* ForceChan(chanrec* Ptr,ucrec &a,userrec* user, int created)
 482 {
 483         if (created == 2)
 484         {
 485                 /* first user in is given ops */
 486                 a.uc_modes = UCMODE_OP;
 487                 Ptr->AddOppedUser((char*)user);
 488         }
 489         else
 490         {
 491                 a.uc_modes = 0;
 492         }
 493
 494         a.channel = Ptr;
 495         Ptr->AddUser((char*)user);
 496         WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
 497         log(DEBUG,"Sent JOIN to client");
 498
 499         if (Ptr->topicset)
 500         {
 501                 WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
 502                 WriteServ(user->fd,"333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
 503         }
 504
 505         userlist(user,Ptr);
 506         WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
 507         FOREACH_MOD(I_OnUserJoin,OnUserJoin(user,Ptr));
 508         return Ptr;
 509 }
 510
 511 /*
 512  *remove a channel from a users record, and remove the record from memory
 513  * if the channel has become empty
 514  */
 515
 516 chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
 517 {
 518         if ((!user) || (!cname))
 519         {
 520                 log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
 521                 return NULL;
 522         }
 523
 524         chanrec* Ptr = FindChan(cname);
 525
 526         if (!Ptr)
 527                 return NULL;
 528
 529         log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
 530
 531         for (unsigned int i =0; i < user->chans.size(); i++)
 532         {
 533                 /* zap it from the channel list of the user */
 534                 if (user->chans[i].channel == Ptr)
 535                 {
 536                         if (reason)
 537                         {
 538                                 FOREACH_MOD(I_OnUserPart,OnUserPart(user,Ptr,reason));
 539                                 WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
 540                         }
 541                         else
 542                         {
 543                                 FOREACH_MOD(I_OnUserPart,OnUserPart(user,Ptr,""));
 544                                 WriteChannel(Ptr,user,"PART :%s",Ptr->name);
 545                         }
 546                         user->chans[i].uc_modes = 0;
 547                         user->chans[i].channel = NULL;
 548                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
 549                         break;
 550                 }
 551         }
 552
 553         Ptr->DelUser((char*)user);
 554
 555         /* if there are no users left on the channel */
 556         if (!usercount(Ptr))
 557         {
 558                 chan_hash::iterator iter = chanlist.find(Ptr->name);
 559
 560                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
 561
 562                 /* kill the record */
 563                 if (iter != chanlist.end())
 564                 {
 565                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
 566                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(Ptr));
 567                         delete Ptr;
 568                         chanlist.erase(iter);
 569                 }
 570         }
 571
 572         return NULL;
 573 }
 574
 575 void server_kick_channel(userrec* user, chanrec* Ptr, char* reason, bool triggerevents)
 576 {
 577         if ((!user) || (!Ptr) || (!reason))
 578         {
 579                 return;
 580         }
 581
 582         if (IS_LOCAL(user))
 583         {
 584                 if (!has_channel(user,Ptr))
 585                 {
 586                         /* Not on channel */
 587                         return;
 588                 }
 589         }
 590
 591         if (triggerevents)
 592         {
 593                 FOREACH_MOD(I_OnUserKick,OnUserKick(NULL,user,Ptr,reason));
 594         }
 595
 596         for (unsigned int i =0; i < user->chans.size(); i++)
 597         {
 598                 if (user->chans[i].channel)
 599                 if (!strcasecmp(user->chans[i].channel->name,Ptr->name))
 600                 {
 601                         WriteChannelWithServ(Config->ServerName,Ptr,"KICK %s %s :%s",Ptr->name, user->nick, reason);
 602                         user->chans[i].uc_modes = 0;
 603                         user->chans[i].channel = NULL;
 604                         break;
 605                 }
 606         }
 607
 608         Ptr->DelUser((char*)user);
 609
 610         if (!usercount(Ptr))
 611         {
 612                 chan_hash::iterator iter = chanlist.find(Ptr->name);
 613                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
 614                 /* kill the record */
 615                 if (iter != chanlist.end())
 616                 {
 617                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
 618                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(Ptr));
 619                         delete Ptr;
 620                         chanlist.erase(iter);
 621                 }
 622         }
 623 }
 624
 625 void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
 626 {
 627         if ((!src) || (!user) || (!Ptr) || (!reason))
 628         {
 629                 log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
 630                 return;
 631         }
 632
 633         log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
 634
 635         if (IS_LOCAL(src))
 636         {
 637                 if (!has_channel(user,Ptr))
 638                 {
 639                         WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
 640                         return;
 641                 }
 642                 int MOD_RESULT = 0;
 643
 644                 if (!is_uline(src->server))
 645                 {
 646                         MOD_RESULT = 0;
 647                         FOREACH_RESULT(I_OnUserPreKick,OnUserPreKick(src,user,Ptr,reason));
 648                         if (MOD_RESULT == 1)
 649                                 return;
 650                 }
 651                 /* Set to -1 by OnUserPreKick if explicit allow was set */
 652                 if (MOD_RESULT != -1)
 653                 {
 654                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(src,user,Ptr,AC_KICK));
 655                         if ((MOD_RESULT == ACR_DENY) && (!is_uline(src->server)))
 656                                 return;
 657
 658                         if ((MOD_RESULT == ACR_DEFAULT) || (!is_uline(src->server)))
 659                         {
 660                                 if ((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr)))
 661                                 {
 662                                         if (cstatus(src,Ptr) == STATUS_HOP)
 663                                         {
 664                                                 WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
 665                                         }
 666                                         else
 667                                         {
 668                                                 WriteServ(src->fd,"482 %s %s :You must be at least a half-operator",src->nick, Ptr->name);
 669                                         }
 670
 671                                         return;
 672                                 }
 673                         }
 674                 }
 675         }
 676
 677         FOREACH_MOD(I_OnUserKick,OnUserKick(src,user,Ptr,reason));
 678
 679         for (unsigned int i =0; i < user->chans.size(); i++)
 680         {
 681                 /* zap it from the channel list of the user */
 682                 if (user->chans[i].channel)
 683                 {
 684                         if (!strcasecmp(user->chans[i].channel->name,Ptr->name))
 685                         {
 686                                 WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
 687                                 user->chans[i].uc_modes = 0;
 688                                 user->chans[i].channel = NULL;
 689                                 log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
 690                                 break;
 691                         }
 692                 }
 693         }
 694
 695         Ptr->DelUser((char*)user);
 696
 697         /* if there are no users left on the channel */
 698         if (!usercount(Ptr))
 699         {
 700                 chan_hash::iterator iter = chanlist.find(Ptr->name);
 701
 702                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
 703
 704                 /* kill the record */
 705                 if (iter != chanlist.end())
 706                 {
 707                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
 708                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(Ptr));
 709                         delete Ptr;
 710                         chanlist.erase(iter);
 711                 }
 712         }
 713 }
 714
 715