src/channels.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include <stdarg.h>
  15 #include "configreader.h"
  16 #include "inspircd.h"
  17 #include "users.h"
  18 #include "modules.h"
  19 #include "wildcard.h"
  20 #include "mode.h"
  21
  22 chanrec::chanrec(InspIRCd* Instance) : ServerInstance(Instance)
  23 {
  24         *name = *topic = *setby = *key = 0;
  25         maxbans = created = topicset = limit = 0;
  26         memset(&modes,0,64);
  27         age = ServerInstance->Time(true);
  28 }
  29
  30 void chanrec::SetMode(char mode,bool mode_on)
  31 {
  32         modes[mode-65] = mode_on;
  33         if (!mode_on)
  34                 this->SetModeParam(mode,"",false);
  35 }
  36
  37
  38 void chanrec::SetModeParam(char mode,const char* parameter,bool mode_on)
  39 {
  40         CustomModeList::iterator n = custom_mode_params.find(mode);
  41
  42         if (mode_on)
  43         {
  44                 if (n == custom_mode_params.end())
  45                         custom_mode_params[mode] = strdup(parameter);
  46         }
  47         else
  48         {
  49                 if (n != custom_mode_params.end())
  50                 {
  51                         free(n->second);
  52                         custom_mode_params.erase(n);
  53                 }
  54         }
  55 }
  56
  57 bool chanrec::IsModeSet(char mode)
  58 {
  59         return modes[mode-65];
  60 }
  61
  62 std::string chanrec::GetModeParameter(char mode)
  63 {
  64         switch (mode)
  65         {
  66                 case 'k':
  67                         return this->key;
  68                 case 'l':
  69                         return ConvToStr(this->limit);
  70                 default:
  71                         CustomModeList::iterator n = custom_mode_params.find(mode);
  72                         if (n != custom_mode_params.end())
  73                                 return n->second;
  74                         return "";
  75                 break;
  76         }
  77 }
  78
  79 long chanrec::GetUserCounter()
  80 {
  81         return (this->internal_userlist.size());
  82 }
  83
  84 void chanrec::AddUser(userrec* user)
  85 {
  86         internal_userlist[user] = user;
  87 }
  88
  89 unsigned long chanrec::DelUser(userrec* user)
  90 {
  91         CUListIter a = internal_userlist.find(user);
  92
  93         if (a != internal_userlist.end())
  94         {
  95                 internal_userlist.erase(a);
  96                 /* And tidy any others... */
  97                 DelOppedUser(user);
  98                 DelHalfoppedUser(user);
  99                 DelVoicedUser(user);
 100         }
 101
 102         return internal_userlist.size();
 103 }
 104
 105 bool chanrec::HasUser(userrec* user)
 106 {
 107         return (internal_userlist.find(user) != internal_userlist.end());
 108 }
 109
 110 void chanrec::AddOppedUser(userrec* user)
 111 {
 112         internal_op_userlist[user] = user;
 113 }
 114
 115 void chanrec::DelOppedUser(userrec* user)
 116 {
 117         CUListIter a = internal_op_userlist.find(user);
 118         if (a != internal_op_userlist.end())
 119         {
 120                 internal_op_userlist.erase(a);
 121                 return;
 122         }
 123 }
 124
 125 void chanrec::AddHalfoppedUser(userrec* user)
 126 {
 127         internal_halfop_userlist[user] = user;
 128 }
 129
 130 void chanrec::DelHalfoppedUser(userrec* user)
 131 {
 132         CUListIter a = internal_halfop_userlist.find(user);
 133
 134         if (a != internal_halfop_userlist.end())
 135         {
 136                 internal_halfop_userlist.erase(a);
 137         }
 138 }
 139
 140 void chanrec::AddVoicedUser(userrec* user)
 141 {
 142         internal_voice_userlist[user] = user;
 143 }
 144
 145 void chanrec::DelVoicedUser(userrec* user)
 146 {
 147         CUListIter a = internal_voice_userlist.find(user);
 148
 149         if (a != internal_voice_userlist.end())
 150         {
 151                 internal_voice_userlist.erase(a);
 152         }
 153 }
 154
 155 CUList* chanrec::GetUsers()
 156 {
 157         return &internal_userlist;
 158 }
 159
 160 CUList* chanrec::GetOppedUsers()
 161 {
 162         return &internal_op_userlist;
 163 }
 164
 165 CUList* chanrec::GetHalfoppedUsers()
 166 {
 167         return &internal_halfop_userlist;
 168 }
 169
 170 CUList* chanrec::GetVoicedUsers()
 171 {
 172         return &internal_voice_userlist;
 173 }
 174
 175 /*
 176  * add a channel to a user, creating the record for it if needed and linking
 177  * it to the user record
 178  */
 179 chanrec* chanrec::JoinUser(InspIRCd* Instance, userrec *user, const char* cn, bool override, const char* key, time_t TS)
 180 {
 181         if (!user || !cn)
 182                 return NULL;
 183
 184         bool new_channel = false;
 185         char cname[MAXBUF];
 186         int MOD_RESULT = 0;
 187         strlcpy(cname,cn,CHANMAX);
 188
 189         std::string privs;
 190
 191         chanrec* Ptr = Instance->FindChan(cname);
 192
 193         if (!Ptr)
 194         {
 195                 if ((!IS_LOCAL(user)) && (!TS))
 196                         Instance->Log(DEBUG,"*** BUG *** chanrec::JoinUser called for REMOTE user '%s' on channel '%s' but no TS given!", user->nick, cn);
 197
 198                 privs = "@";
 199
 200                 if (IS_LOCAL(user) && override == false)
 201                 {
 202                         MOD_RESULT = 0;
 203                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,NULL,cname,privs));
 204                         if (MOD_RESULT == 1)
 205                                 return NULL;
 206                 }
 207
 208                 /* create a new one */
 209                 Ptr = new chanrec(Instance);
 210                 (*(Instance->chanlist))[cname] = Ptr;
 211
 212                 strlcpy(Ptr->name, cname,CHANMAX);
 213
 214                 /* As spotted by jilles, dont bother to set this on remote users */
 215                 if (IS_LOCAL(user))
 216                         Ptr->modes[CM_TOPICLOCK] = Ptr->modes[CM_NOEXTERNAL] = 1;
 217
 218                 Ptr->created = TS ? TS : Instance->Time();
 219                 *Ptr->topic = 0;
 220                 *Ptr->setby = 0;
 221                 Ptr->topicset = 0;
 222                 new_channel = true;
 223         }
 224         else
 225         {
 226                 /* Already on the channel */
 227                 if (Ptr->HasUser(user))
 228                         return NULL;
 229
 230                 /*
 231                  * remote users are allowed us to bypass channel modes
 232                  * and bans (used by servers)
 233                  */
 234                 if (IS_LOCAL(user) && override == false)
 235                 {
 236                         MOD_RESULT = 0;
 237                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,Ptr,cname,privs));
 238                         if (MOD_RESULT == 1)
 239                         {
 240                                 return NULL;
 241                         }
 242                         else if (MOD_RESULT == 0)
 243                         {
 244                                 if (*Ptr->key)
 245                                 {
 246                                         MOD_RESULT = 0;
 247                                         FOREACH_RESULT_I(Instance,I_OnCheckKey,OnCheckKey(user, Ptr, key ? key : ""));
 248                                         if (!MOD_RESULT)
 249                                         {
 250                                                 if ((!key) || strcmp(key,Ptr->key))
 251                                                 {
 252                                                         user->WriteServ("475 %s %s :Cannot join channel (Incorrect channel key)",user->nick, Ptr->name);
 253                                                         return NULL;
 254                                                 }
 255                                         }
 256                                 }
 257                                 if (Ptr->modes[CM_INVITEONLY])
 258                                 {
 259                                         MOD_RESULT = 0;
 260                                         FOREACH_RESULT_I(Instance,I_OnCheckInvite,OnCheckInvite(user, Ptr));
 261                                         if (!MOD_RESULT)
 262                                         {
 263                                                 if (user->IsInvited(Ptr->name))
 264                                                 {
 265                                                         /* user was invited to channel */
 266                                                         /* there may be an optional channel NOTICE here */
 267                                                 }
 268                                                 else
 269                                                 {
 270                                                         user->WriteServ("473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
 271                                                         return NULL;
 272                                                 }
 273                                         }
 274                                         user->RemoveInvite(Ptr->name);
 275                                 }
 276                                 if (Ptr->limit)
 277                                 {
 278                                         MOD_RESULT = 0;
 279                                         FOREACH_RESULT_I(Instance,I_OnCheckLimit,OnCheckLimit(user, Ptr));
 280                                         if (!MOD_RESULT)
 281                                         {
 282                                                 if (Ptr->GetUserCounter() >= Ptr->limit)
 283                                                 {
 284                                                         user->WriteServ("471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
 285                                                         return NULL;
 286                                                 }
 287                                         }
 288                                 }
 289                                 if (Ptr->bans.size())
 290                                 {
 291                                         if (Ptr->IsBanned(user))
 292                                         {
 293                                                 user->WriteServ("474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
 294                                                 return NULL;
 295                                         }
 296                                 }
 297                         }
 298                 }
 299         }
 300
 301         /* NOTE: If the user is an oper here, we can extend their user->chans by up to
 302          * OperMaxchans. For remote users which are not bound by the channel limits,
 303          * we can extend infinitely. Otherwise, nope, youre restricted to MaxChans.
 304          */
 305         if (!IS_LOCAL(user) || override == true)
 306         {
 307                 return chanrec::ForceChan(Instance, Ptr, user, privs);
 308         }
 309         else if (*user->oper)
 310         {
 311                 /* Oper allows extension up to the OperMaxchans value */
 312                 if (user->chans.size() < Instance->Config->OperMaxChans)
 313                 {
 314                         return chanrec::ForceChan(Instance, Ptr, user, privs);
 315                 }
 316         }
 317         else if (user->chans.size() < Instance->Config->MaxChans)
 318         {
 319                 return chanrec::ForceChan(Instance, Ptr, user, privs);
 320         }
 321
 322
 323         user->WriteServ("405 %s %s :You are on too many channels",user->nick, cname);
 324
 325         if (new_channel)
 326         {
 327                 /* Things went seriously pear shaped, so take this away. bwahaha. */
 328                 chan_hash::iterator n = Instance->chanlist->find(cname);
 329                 if (n != Instance->chanlist->end())
 330                 {
 331                         Ptr->DelUser(user);
 332                         DELETE(Ptr);
 333                         Instance->chanlist->erase(n);
 334                 }
 335         }
 336
 337         return NULL;
 338 }
 339
 340 chanrec* chanrec::ForceChan(InspIRCd* Instance, chanrec* Ptr, userrec* user, const std::string &privs)
 341 {
 342         userrec* dummyuser = new userrec(Instance);
 343         std::string nick = user->nick;
 344
 345         dummyuser->SetFd(FD_MAGIC_NUMBER);
 346         Ptr->AddUser(user);
 347
 348         /* Just in case they have no permissions */
 349         user->chans[Ptr] = 0;
 350
 351         for (std::string::const_iterator x = privs.begin(); x != privs.end(); x++)
 352         {
 353                 const char status = *x;
 354                 ModeHandler* mh = Instance->Modes->FindPrefix(status);
 355                 if (mh)
 356                 {
 357                         Ptr->SetPrefix(user, status, mh->GetPrefixRank(), true);
 358                         /* Make sure that the mode handler knows this mode was now set */
 359                         mh->OnModeChange(dummyuser, dummyuser, Ptr, nick, true);
 360
 361                         switch (mh->GetPrefix())
 362                         {
 363                                 /* These logic ops are SAFE IN THIS CASE
 364                                  * because if the entry doesnt exist,
 365                                  * addressing operator[] creates it.
 366                                  * If they do exist, it points to it.
 367                                  * At all other times where we dont want
 368                                  * to create an item if it doesnt exist, we
 369                                  * must stick to ::find().
 370                                  */
 371                                 case '@':
 372                                         user->chans[Ptr] |= UCMODE_OP;
 373                                 break;
 374                                 case '%':
 375                                         user->chans[Ptr] |= UCMODE_HOP;
 376                                 break;
 377                                 case '+':
 378                                         user->chans[Ptr] |= UCMODE_VOICE;
 379                                 break;
 380                         }
 381                 }
 382         }
 383
 384         delete dummyuser;
 385
 386         Ptr->WriteChannel(user,"JOIN :%s",Ptr->name);
 387
 388         /* Theyre not the first ones in here, make sure everyone else sees the modes we gave the user */
 389         std::string ms = Instance->Modes->ModeString(user, Ptr);
 390         if ((Ptr->GetUserCounter() > 1) && (ms.length()))
 391                 Ptr->WriteAllExceptSender(user, true, 0, "MODE %s +%s", Ptr->name, ms.c_str());
 392
 393         /* Major improvement by Brain - we dont need to be calculating all this pointlessly for remote users */
 394         if (IS_LOCAL(user))
 395         {
 396                 if (Ptr->topicset)
 397                 {
 398                         user->WriteServ("332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
 399                         user->WriteServ("333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
 400                 }
 401                 Ptr->UserList(user);
 402         }
 403         FOREACH_MOD_I(Instance,I_OnUserJoin,OnUserJoin(user,Ptr));
 404         FOREACH_MOD_I(Instance,I_OnPostJoin,OnPostJoin(user,Ptr));
 405         return Ptr;
 406 }
 407
 408 bool chanrec::IsBanned(userrec* user)
 409 {
 410         char mask[MAXBUF];
 411         int MOD_RESULT = 0;
 412         FOREACH_RESULT(I_OnCheckBan,OnCheckBan(user, this));
 413         if (!MOD_RESULT)
 414         {
 415                 snprintf(mask, MAXBUF, "%s!%s@%s", user->nick, user->ident, user->GetIPString());
 416                 for (BanList::iterator i = this->bans.begin(); i != this->bans.end(); i++)
 417                 {
 418                         /* This allows CIDR ban matching
 419                          *
 420                          *        Full masked host                      Full unmasked host                   IP with/without CIDR
 421                          */
 422                         if ((match(user->GetFullHost(),i->data)) || (match(user->GetFullRealHost(),i->data)) || (match(mask, i->data, true)))
 423                         {
 424                                 return true;
 425                         }
 426                 }
 427         }
 428         return false;
 429 }
 430
 431 /* chanrec::PartUser
 432  * remove a channel from a users record, and return the number of users left.
 433  * Therefore, if this function returns 0 the caller should delete the chanrec.
 434  */
 435 long chanrec::PartUser(userrec *user, const char* reason)
 436 {
 437         if (!user)
 438                 return this->GetUserCounter();
 439
 440         UCListIter i = user->chans.find(this);
 441         if (i != user->chans.end())
 442         {
 443                 FOREACH_MOD(I_OnUserPart,OnUserPart(user, this, reason ? reason : ""));
 444                 this->WriteChannel(user, "PART %s%s%s", this->name, reason ? " :" : "", reason ? reason : "");
 445                 user->chans.erase(i);
 446                 this->RemoveAllPrefixes(user);
 447         }
 448
 449         if (!this->DelUser(user)) /* if there are no users left on the channel... */
 450         {
 451                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 452                 /* kill the record */
 453                 if (iter != ServerInstance->chanlist->end())
 454                 {
 455                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 456                         ServerInstance->chanlist->erase(iter);
 457                 }
 458                 return 0;
 459         }
 460
 461         return this->GetUserCounter();
 462 }
 463
 464 long chanrec::ServerKickUser(userrec* user, const char* reason, bool triggerevents)
 465 {
 466         if (!user || !reason)
 467                 return this->GetUserCounter();
 468
 469         if (IS_LOCAL(user))
 470         {
 471                 if (!this->HasUser(user))
 472                 {
 473                         /* Not on channel */
 474                         return this->GetUserCounter();
 475                 }
 476         }
 477
 478         if (triggerevents)
 479         {
 480                 FOREACH_MOD(I_OnUserKick,OnUserKick(NULL,user,this,reason));
 481         }
 482
 483         UCListIter i = user->chans.find(this);
 484         if (i != user->chans.end())
 485         {
 486                 this->WriteChannelWithServ(ServerInstance->Config->ServerName, "KICK %s %s :%s", this->name, user->nick, reason);
 487                 user->chans.erase(i);
 488                 this->RemoveAllPrefixes(user);
 489         }
 490
 491         if (!this->DelUser(user))
 492         {
 493                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 494                 /* kill the record */
 495                 if (iter != ServerInstance->chanlist->end())
 496                 {
 497                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 498                         ServerInstance->chanlist->erase(iter);
 499                 }
 500                 return 0;
 501         }
 502
 503         return this->GetUserCounter();
 504 }
 505
 506 long chanrec::KickUser(userrec *src, userrec *user, const char* reason)
 507 {
 508         if (!src || !user || !reason)
 509                 return this->GetUserCounter();
 510
 511         if (IS_LOCAL(src))
 512         {
 513                 if (!this->HasUser(user))
 514                 {
 515                         src->WriteServ("441 %s %s %s :They are not on that channel",src->nick, user->nick, this->name);
 516                         return this->GetUserCounter();
 517                 }
 518                 if ((ServerInstance->ULine(user->server)) && (!ServerInstance->ULine(src->server)))
 519                 {
 520                         src->WriteServ("482 %s %s :Only a u-line may kick a u-line from a channel.",src->nick, this->name);
 521                         return this->GetUserCounter();
 522                 }
 523                 int MOD_RESULT = 0;
 524
 525                 if (!ServerInstance->ULine(src->server))
 526                 {
 527                         MOD_RESULT = 0;
 528                         FOREACH_RESULT(I_OnUserPreKick,OnUserPreKick(src,user,this,reason));
 529                         if (MOD_RESULT == 1)
 530                                 return this->GetUserCounter();
 531                 }
 532                 /* Set to -1 by OnUserPreKick if explicit allow was set */
 533                 if (MOD_RESULT != -1)
 534                 {
 535                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(src,user,this,AC_KICK));
 536                         if ((MOD_RESULT == ACR_DENY) && (!ServerInstance->ULine(src->server)))
 537                                 return this->GetUserCounter();
 538
 539                         if ((MOD_RESULT == ACR_DEFAULT) || (!ServerInstance->ULine(src->server)))
 540                         {
 541                                 int them = this->GetStatus(src);
 542                                 int us = this->GetStatus(user);
 543                                 if ((them < STATUS_HOP) || (them < us))
 544                                 {
 545                                         src->WriteServ("482 %s %s :You must be a channel %soperator",src->nick, this->name, them == STATUS_HOP ? "" : "half-");
 546                                         return this->GetUserCounter();
 547                                 }
 548                         }
 549                 }
 550         }
 551
 552         FOREACH_MOD(I_OnUserKick,OnUserKick(src,user,this,reason));
 553
 554         UCListIter i = user->chans.find(this);
 555         if (i != user->chans.end())
 556         {
 557                 /* zap it from the channel list of the user */
 558                 this->WriteChannel(src, "KICK %s %s :%s", this->name, user->nick, reason);
 559                 user->chans.erase(i);
 560                 this->RemoveAllPrefixes(user);
 561         }
 562
 563         if (!this->DelUser(user))
 564         /* if there are no users left on the channel */
 565         {
 566                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 567
 568                 /* kill the record */
 569                 if (iter != ServerInstance->chanlist->end())
 570                 {
 571                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 572                         ServerInstance->chanlist->erase(iter);
 573                 }
 574                 return 0;
 575         }
 576
 577         return this->GetUserCounter();
 578 }
 579
 580 void chanrec::WriteChannel(userrec* user, char* text, ...)
 581 {
 582         char textbuffer[MAXBUF];
 583         va_list argsPtr;
 584
 585         if (!user || !text)
 586                 return;
 587
 588         va_start(argsPtr, text);
 589         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 590         va_end(argsPtr);
 591
 592         this->WriteChannel(user, std::string(textbuffer));
 593 }
 594
 595 void chanrec::WriteChannel(userrec* user, const std::string &text)
 596 {
 597         CUList *ulist = this->GetUsers();
 598         char tb[MAXBUF];
 599
 600         if (!user)
 601                 return;
 602
 603         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 604         std::string out = tb;
 605
 606         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 607         {
 608                 if (IS_LOCAL(i->second))
 609                         i->second->Write(out);
 610         }
 611 }
 612
 613 void chanrec::WriteChannelWithServ(const char* ServName, const char* text, ...)
 614 {
 615         char textbuffer[MAXBUF];
 616         va_list argsPtr;
 617
 618         if (!text)
 619                 return;
 620
 621         va_start(argsPtr, text);
 622         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 623         va_end(argsPtr);
 624
 625         this->WriteChannelWithServ(ServName, std::string(textbuffer));
 626 }
 627
 628 void chanrec::WriteChannelWithServ(const char* ServName, const std::string &text)
 629 {
 630         CUList *ulist = this->GetUsers();
 631         char tb[MAXBUF];
 632
 633         snprintf(tb,MAXBUF,":%s %s",ServName ? ServName : ServerInstance->Config->ServerName, text.c_str());
 634         std::string out = tb;
 635
 636         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 637         {
 638                 if (IS_LOCAL(i->second))
 639                         i->second->Write(out);
 640         }
 641 }
 642
 643 /* write formatted text from a source user to all users on a channel except
 644  * for the sender (for privmsg etc) */
 645 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, char* text, ...)
 646 {
 647         char textbuffer[MAXBUF];
 648         va_list argsPtr;
 649
 650         if (!text)
 651                 return;
 652
 653         va_start(argsPtr, text);
 654         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 655         va_end(argsPtr);
 656
 657         this->WriteAllExceptSender(user, serversource, status, std::string(textbuffer));
 658 }
 659
 660 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, char* text, ...)
 661 {
 662         char textbuffer[MAXBUF];
 663         va_list argsPtr;
 664
 665         if (!text)
 666                 return;
 667
 668         va_start(argsPtr, text);
 669         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 670         va_end(argsPtr);
 671
 672         this->WriteAllExcept(user, serversource, status, except_list, std::string(textbuffer));
 673 }
 674
 675 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, const std::string &text)
 676 {
 677         CUList *ulist;
 678         char tb[MAXBUF];
 679
 680         switch (status)
 681         {
 682                 case '@':
 683                         ulist = this->GetOppedUsers();
 684                         break;
 685                 case '%':
 686                         ulist = this->GetHalfoppedUsers();
 687                         break;
 688                 case '+':
 689                         ulist = this->GetVoicedUsers();
 690                         break;
 691                 default:
 692                         ulist = this->GetUsers();
 693                         break;
 694         }
 695
 696         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 697         std::string out = tb;
 698
 699         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 700         {
 701                 if ((IS_LOCAL(i->second)) && (except_list.find(i->second) == except_list.end()))
 702                 {
 703                         if (serversource)
 704                                 i->second->WriteServ(text);
 705                         else
 706                                 i->second->Write(out);
 707                 }
 708         }
 709 }
 710
 711 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, const std::string& text)
 712 {
 713         CUList except_list;
 714         except_list[user] = user;
 715         this->WriteAllExcept(user, serversource, status, except_list, std::string(text));
 716 }
 717
 718 /*
 719  * return a count of the users on a specific channel accounting for
 720  * invisible users who won't increase the count. e.g. for /LIST
 721  */
 722 int chanrec::CountInvisible()
 723 {
 724         int count = 0;
 725         CUList *ulist= this->GetUsers();
 726         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 727         {
 728                 if (!(i->second->modes[UM_INVISIBLE]))
 729                         count++;
 730         }
 731
 732         return count;
 733 }
 734
 735 char* chanrec::ChanModes(bool showkey)
 736 {
 737         static char scratch[MAXBUF];
 738         static char sparam[MAXBUF];
 739         char* offset = scratch;
 740         std::string extparam;
 741
 742         *scratch = '\0';
 743         *sparam = '\0';
 744
 745         /* This was still iterating up to 190, chanrec::modes is only 64 elements -- Om */
 746         for(int n = 0; n < 64; n++)
 747         {
 748                 if(this->modes[n])
 749                 {
 750                         *offset++ = n + 65;
 751                         extparam = "";
 752                         switch (n)
 753                         {
 754                                 case CM_KEY:
 755                                         extparam = (showkey ? this->key : "<key>");
 756                                 break;
 757                                 case CM_LIMIT:
 758                                         extparam = ConvToStr(this->limit);
 759                                 break;
 760                                 case CM_NOEXTERNAL:
 761                                 case CM_TOPICLOCK:
 762                                 case CM_INVITEONLY:
 763                                 case CM_MODERATED:
 764                                 case CM_SECRET:
 765                                 case CM_PRIVATE:
 766                                         /* We know these have no parameters */
 767                                 break;
 768                                 default:
 769                                         extparam = this->GetModeParameter(n + 65);
 770                                 break;
 771                         }
 772                         if (extparam != "")
 773                         {
 774                                 charlcat(sparam,' ',MAXBUF);
 775                                 strlcat(sparam,extparam.c_str(),MAXBUF);
 776                         }
 777                 }
 778         }
 779
 780         /* Null terminate scratch */
 781         *offset = '\0';
 782         strlcat(scratch,sparam,MAXBUF);
 783         return scratch;
 784 }
 785
 786 /* compile a userlist of a channel into a string, each nick seperated by
 787  * spaces and op, voice etc status shown as @ and +, and send it to 'user'
 788  */
 789 void chanrec::UserList(userrec *user)
 790 {
 791         char list[MAXBUF];
 792         size_t dlen, curlen;
 793         int MOD_RESULT = 0;
 794
 795         if (!IS_LOCAL(user))
 796                 return;
 797
 798         FOREACH_RESULT(I_OnUserList,OnUserList(user, this));
 799         if (MOD_RESULT == 1)
 800                 return;
 801
 802         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 803
 804         int numusers = 0;
 805         char* ptr = list + dlen;
 806
 807         CUList *ulist= this->GetUsers();
 808
 809         /* Improvement by Brain - this doesnt change in value, so why was it inside
 810          * the loop?
 811          */
 812         bool has_user = this->HasUser(user);
 813
 814         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 815         {
 816                 if ((!has_user) && (i->second->modes[UM_INVISIBLE]))
 817                 {
 818                         /*
 819                          * user is +i, and source not on the channel, does not show
 820                          * nick in NAMES list
 821                          */
 822                         continue;
 823                 }
 824
 825                 size_t ptrlen = snprintf(ptr, MAXBUF, "%s%s ", this->GetPrefixChar(i->second), i->second->nick);
 826
 827                 curlen += ptrlen;
 828                 ptr += ptrlen;
 829
 830                 numusers++;
 831
 832                 if (curlen > (480-NICKMAX))
 833                 {
 834                         /* list overflowed into multiple numerics */
 835                         user->WriteServ(std::string(list));
 836
 837                         /* reset our lengths */
 838                         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 839                         ptr = list + dlen;
 840
 841                         ptrlen = 0;
 842                         numusers = 0;
 843                 }
 844         }
 845
 846         /* if whats left in the list isnt empty, send it */
 847         if (numusers)
 848         {
 849                 user->WriteServ(std::string(list));
 850         }
 851
 852         user->WriteServ("366 %s %s :End of /NAMES list.", user->nick, this->name);
 853 }
 854
 855 long chanrec::GetMaxBans()
 856 {
 857         /* Return the cached value if there is one */
 858         if (this->maxbans)
 859                 return this->maxbans;
 860
 861         /* If there isnt one, we have to do some O(n) hax to find it the first time. (ick) */
 862         for (std::map<std::string,int>::iterator n = ServerInstance->Config->maxbans.begin(); n != ServerInstance->Config->maxbans.end(); n++)
 863         {
 864                 if (match(this->name,n->first.c_str()))
 865                 {
 866                         this->maxbans = n->second;
 867                         return n->second;
 868                 }
 869         }
 870
 871         /* Screw it, just return the default of 64 */
 872         this->maxbans = 64;
 873         return this->maxbans;
 874 }
 875
 876 void chanrec::ResetMaxBans()
 877 {
 878         this->maxbans = 0;
 879 }
 880
 881 /* returns the status character for a given user on a channel, e.g. @ for op,
 882  * % for halfop etc. If the user has several modes set, the highest mode
 883  * the user has must be returned.
 884  */
 885 const char* chanrec::GetPrefixChar(userrec *user)
 886 {
 887         static char pf[2] = {0, 0};
 888
 889         prefixlist::iterator n = prefixes.find(user);
 890         if (n != prefixes.end())
 891         {
 892                 if (n->second.size())
 893                 {
 894                         /* If the user has any prefixes, their highest prefix
 895                          * will always be at the head of the list, as the list is
 896                          * sorted in rank order highest first (see SetPrefix()
 897                          * for reasons why)
 898                          */
 899                         *pf = n->second.begin()->first;
 900                         return pf;
 901                 }
 902         }
 903
 904         *pf = 0;
 905         return pf;
 906 }
 907
 908 const char* chanrec::GetAllPrefixChars(userrec* user)
 909 {
 910         static char prefix[MAXBUF];
 911         int ctr = 0;
 912         *prefix = 0;
 913
 914         prefixlist::iterator n = prefixes.find(user);
 915         if (n != prefixes.end())
 916         {
 917                 for (std::vector<prefixtype>::iterator x = n->second.begin(); x != n->second.end(); x++)
 918                 {
 919                         prefix[ctr++] = x->first;
 920                 }
 921         }
 922
 923         prefix[ctr] = 0;
 924
 925         return prefix;
 926 }
 927
 928 unsigned int chanrec::GetPrefixValue(userrec* user)
 929 {
 930         prefixlist::iterator n = prefixes.find(user);
 931         if (n != prefixes.end())
 932         {
 933                 if (n->second.size())
 934                         return n->second.begin()->second;
 935         }
 936         return 0;
 937 }
 938
 939 int chanrec::GetStatusFlags(userrec *user)
 940 {
 941         UCListIter i = user->chans.find(this);
 942         if (i != user->chans.end())
 943         {
 944                 return i->second;
 945         }
 946         return 0;
 947 }
 948
 949 int chanrec::GetStatus(userrec *user)
 950 {
 951         if (ServerInstance->ULine(user->server))
 952                 return STATUS_OP;
 953
 954         UCListIter i = user->chans.find(this);
 955         if (i != user->chans.end())
 956         {
 957                 if ((i->second & UCMODE_OP) > 0)
 958                 {
 959                         return STATUS_OP;
 960                 }
 961                 if ((i->second & UCMODE_HOP) > 0)
 962                 {
 963                         return STATUS_HOP;
 964                 }
 965                 if ((i->second & UCMODE_VOICE) > 0)
 966                 {
 967                         return STATUS_VOICE;
 968                 }
 969                 return STATUS_NORMAL;
 970         }
 971         return STATUS_NORMAL;
 972 }
 973
 974 void chanrec::SetPrefix(userrec* user, char prefix, unsigned int prefix_value, bool adding)
 975 {
 976         prefixlist::iterator n = prefixes.find(user);
 977         prefixtype pfx = std::make_pair(prefix,prefix_value);
 978         if (adding)
 979         {
 980                 if (n != prefixes.end())
 981                 {
 982                         if (std::find(n->second.begin(), n->second.end(), pfx) == n->second.end())
 983                         {
 984                                 n->second.push_back(pfx);
 985                                 /* We must keep prefixes in rank order, largest first.
 986                                  * This is for two reasons, firstly because x-chat *ass-u-me's* this
 987                                  * state, and secondly it turns out to be a benefit to us later.
 988                                  * See above in GetPrefix().
 989                                  */
 990                                 std::sort(n->second.begin(), n->second.end(), ModeParser::PrefixComparison);
 991                         }
 992                 }
 993                 else
 994                 {
 995                         pfxcontainer one;
 996                         one.push_back(pfx);
 997                         prefixes.insert(std::make_pair<userrec*,pfxcontainer>(user, one));
 998                 }
 999         }
1000         else
1001         {
1002                 if (n != prefixes.end())
1003                 {
1004                         pfxcontainer::iterator x = std::find(n->second.begin(), n->second.end(), pfx);
1005                         if (x != n->second.end())
1006                                 n->second.erase(x);
1007                 }
1008         }
1009 }
1010
1011 void chanrec::RemoveAllPrefixes(userrec* user)
1012 {
1013         prefixlist::iterator n = prefixes.find(user);
1014         if (n != prefixes.end())
1015         {
1016                 prefixes.erase(n);
1017         }
1018 }
1019