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 <stdarg.h>
  20 #include "configreader.h"
  21 #include "inspircd.h"
  22 #include "users.h"
  23 #include "modules.h"
  24 #include "wildcard.h"
  25 #include "mode.h"
  26
  27 chanrec::chanrec(InspIRCd* Instance) : ServerInstance(Instance)
  28 {
  29         *name = *topic = *setby = *key = 0;
  30         created = topicset = limit = 0;
  31         internal_userlist.clear();
  32         memset(&modes,0,64);
  33         age = ServerInstance->Time(true);
  34 }
  35
  36 void chanrec::SetMode(char mode,bool mode_on)
  37 {
  38         modes[mode-65] = mode_on;
  39         if (!mode_on)
  40                 this->SetModeParam(mode,"",false);
  41 }
  42
  43
  44 void chanrec::SetModeParam(char mode,const char* parameter,bool mode_on)
  45 {
  46         ServerInstance->Log(DEBUG,"SetModeParam called");
  47
  48         CustomModeList::iterator n = custom_mode_params.find(mode);
  49
  50         if (mode_on)
  51         {
  52                 if (n == custom_mode_params.end())
  53                 {
  54                         custom_mode_params[mode] = strdup(parameter);
  55                         ServerInstance->Log(DEBUG,"Custom mode parameter %c %s added",mode,parameter);
  56                 }
  57                 else
  58                 {
  59                         ServerInstance->Log(DEBUG, "Tried to set custom mode parameter for %c '%s' when it was already '%s'", mode, parameter, n->second);
  60                 }
  61         }
  62         else
  63         {
  64                 if (n != custom_mode_params.end())
  65                 {
  66                         free(n->second);
  67                         custom_mode_params.erase(n);
  68                 }
  69         }
  70 }
  71
  72 bool chanrec::IsModeSet(char mode)
  73 {
  74         return modes[mode-65];
  75 }
  76
  77 std::string chanrec::GetModeParameter(char mode)
  78 {
  79         if (mode == 'k')
  80         {
  81                 return this->key;
  82         }
  83         else if (mode == 'l')
  84         {
  85                 return ConvToStr(this->limit);
  86         }
  87         else
  88         {
  89                 CustomModeList::iterator n = custom_mode_params.find(mode);
  90                 if (n != custom_mode_params.end())
  91                 {
  92                         return n->second;
  93                 }
  94                 return "";
  95         }
  96 }
  97
  98 long chanrec::GetUserCounter()
  99 {
 100         return (this->internal_userlist.size());
 101 }
 102
 103 void chanrec::AddUser(userrec* user)
 104 {
 105         internal_userlist[user] = user;
 106 }
 107
 108 unsigned long chanrec::DelUser(userrec* user)
 109 {
 110         CUListIter a = internal_userlist.find(user);
 111
 112         if (a != internal_userlist.end())
 113         {
 114                 internal_userlist.erase(a);
 115                 /* And tidy any others... */
 116                 DelOppedUser(user);
 117                 DelHalfoppedUser(user);
 118                 DelVoicedUser(user);
 119         }
 120
 121         return internal_userlist.size();
 122 }
 123
 124 bool chanrec::HasUser(userrec* user)
 125 {
 126         return (internal_userlist.find(user) != internal_userlist.end());
 127 }
 128
 129 void chanrec::AddOppedUser(userrec* user)
 130 {
 131         internal_op_userlist[user] = user;
 132 }
 133
 134 void chanrec::DelOppedUser(userrec* user)
 135 {
 136         CUListIter a = internal_op_userlist.find(user);
 137         if (a != internal_op_userlist.end())
 138         {
 139                 internal_op_userlist.erase(a);
 140                 return;
 141         }
 142 }
 143
 144 void chanrec::AddHalfoppedUser(userrec* user)
 145 {
 146         internal_halfop_userlist[user] = user;
 147 }
 148
 149 void chanrec::DelHalfoppedUser(userrec* user)
 150 {
 151         CUListIter a = internal_halfop_userlist.find(user);
 152
 153         if (a != internal_halfop_userlist.end())
 154         {
 155                 internal_halfop_userlist.erase(a);
 156         }
 157 }
 158
 159 void chanrec::AddVoicedUser(userrec* user)
 160 {
 161         internal_voice_userlist[user] = user;
 162 }
 163
 164 void chanrec::DelVoicedUser(userrec* user)
 165 {
 166         CUListIter a = internal_voice_userlist.find(user);
 167
 168         if (a != internal_voice_userlist.end())
 169         {
 170                 internal_voice_userlist.erase(a);
 171         }
 172 }
 173
 174 CUList* chanrec::GetUsers()
 175 {
 176         return &internal_userlist;
 177 }
 178
 179 CUList* chanrec::GetOppedUsers()
 180 {
 181         return &internal_op_userlist;
 182 }
 183
 184 CUList* chanrec::GetHalfoppedUsers()
 185 {
 186         return &internal_halfop_userlist;
 187 }
 188
 189 CUList* chanrec::GetVoicedUsers()
 190 {
 191         return &internal_voice_userlist;
 192 }
 193
 194 /*
 195  * add a channel to a user, creating the record for it if needed and linking
 196  * it to the user record
 197  */
 198 chanrec* chanrec::JoinUser(InspIRCd* Instance, userrec *user, const char* cn, bool override, const char* key)
 199 {
 200         if (!user || !cn)
 201                 return NULL;
 202
 203         bool new_channel = false;
 204         char cname[MAXBUF];
 205         int MOD_RESULT = 0;
 206         strlcpy(cname,cn,CHANMAX);
 207
 208         std::string privs;
 209
 210         chanrec* Ptr = Instance->FindChan(cname);
 211
 212         if (!Ptr)
 213         {
 214                 privs = "@";
 215
 216                 if (IS_LOCAL(user))
 217                 {
 218                         MOD_RESULT = 0;
 219                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,NULL,cname,privs));
 220                         if (MOD_RESULT == 1)
 221                                 return NULL;
 222                 }
 223
 224                 /* create a new one */
 225                 Ptr = new chanrec(Instance);
 226                 Instance->chanlist[cname] = Ptr;
 227
 228                 strlcpy(Ptr->name, cname,CHANMAX);
 229                 Ptr->modes[CM_TOPICLOCK] = Ptr->modes[CM_NOEXTERNAL] = 1;
 230                 Ptr->created = Instance->Time();
 231                 *Ptr->topic = 0;
 232                 *Ptr->setby = 0;
 233                 Ptr->topicset = 0;
 234                 Instance->Log(DEBUG,"chanrec::JoinUser(): created: %s",cname);
 235                 new_channel = true;
 236         }
 237         else
 238         {
 239                 /* Already on the channel */
 240                 if (Ptr->HasUser(user))
 241                         return NULL;
 242
 243                 /*
 244                  * remote users are allowed us to bypass channel modes
 245                  * and bans (used by servers)
 246                  */
 247                 if (IS_LOCAL(user)) /* was a check on fd > -1 */
 248                 {
 249                         MOD_RESULT = 0;
 250                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,Ptr,cname,privs));
 251                         if (MOD_RESULT == 1)
 252                         {
 253                                 return NULL;
 254                         }
 255                         else if (MOD_RESULT == 0)
 256                         {
 257                                 if (*Ptr->key)
 258                                 {
 259                                         MOD_RESULT = 0;
 260                                         FOREACH_RESULT_I(Instance,I_OnCheckKey,OnCheckKey(user, Ptr, key ? key : ""));
 261                                         if (!MOD_RESULT)
 262                                         {
 263                                                 if ((!key) || strcmp(key,Ptr->key))
 264                                                 {
 265                                                         user->WriteServ("475 %s %s :Cannot join channel (Incorrect channel key)",user->nick, Ptr->name);
 266                                                         return NULL;
 267                                                 }
 268                                         }
 269                                 }
 270                                 if (Ptr->modes[CM_INVITEONLY])
 271                                 {
 272                                         MOD_RESULT = 0;
 273                                         irc::string xname(Ptr->name);
 274                                         FOREACH_RESULT_I(Instance,I_OnCheckInvite,OnCheckInvite(user, Ptr));
 275                                         if (!MOD_RESULT)
 276                                         {
 277                                                 if (user->IsInvited(xname))
 278                                                 {
 279                                                         /* user was invited to channel */
 280                                                         /* there may be an optional channel NOTICE here */
 281                                                 }
 282                                                 else
 283                                                 {
 284                                                         user->WriteServ("473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
 285                                                         return NULL;
 286                                                 }
 287                                         }
 288                                         user->RemoveInvite(xname);
 289                                 }
 290                                 if (Ptr->limit)
 291                                 {
 292                                         MOD_RESULT = 0;
 293                                         FOREACH_RESULT_I(Instance,I_OnCheckLimit,OnCheckLimit(user, Ptr));
 294                                         if (!MOD_RESULT)
 295                                         {
 296                                                 if (Ptr->GetUserCounter() >= Ptr->limit)
 297                                                 {
 298                                                         user->WriteServ("471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
 299                                                         return NULL;
 300                                                 }
 301                                         }
 302                                 }
 303                                 if (Ptr->bans.size())
 304                                 {
 305                                         if (Ptr->IsBanned(user))
 306                                         {
 307                                                 user->WriteServ("474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
 308                                                 return NULL;
 309                                         }
 310                                 }
 311                         }
 312                 }
 313                 else
 314                 {
 315                         Instance->Log(DEBUG,"chanrec::JoinUser(): Overridden checks");
 316                 }
 317         }
 318
 319         for (UserChanList::const_iterator index = user->chans.begin(); index != user->chans.end(); index++)
 320         {
 321                 if ((*index)->channel == NULL)
 322                 {
 323                         return chanrec::ForceChan(Instance, Ptr, *index, user, privs);
 324                 }
 325         }
 326
 327         /*
 328          * XXX: If the user is an oper here, we can just extend their user->chans vector by one
 329          * and put the channel in here. Same for remote users which are not bound by
 330          * the channel limits. Otherwise, nope, youre boned.
 331          */
 332         if (!IS_LOCAL(user)) /* was a check on fd < 0 */
 333         {
 334                 ucrec* a = new ucrec();
 335                 chanrec* c = chanrec::ForceChan(Instance, Ptr, a, user, privs);
 336                 user->chans.push_back(a);
 337                 return c;
 338         }
 339         else if (*user->oper)
 340         {
 341                 /* Oper allows extension up to the OPERMAXCHANS value */
 342                 if (user->chans.size() < OPERMAXCHANS)
 343                 {
 344                         ucrec* a = new ucrec();
 345                         chanrec* c = chanrec::ForceChan(Instance, Ptr, a, user, privs);
 346                         user->chans.push_back(a);
 347                         return c;
 348                 }
 349         }
 350
 351         user->WriteServ("405 %s %s :You are on too many channels",user->nick, cname);
 352
 353         if (new_channel)
 354         {
 355                 Instance->Log(DEBUG,"BLAMMO, Whacking channel.");
 356                 /* Things went seriously pear shaped, so take this away. bwahaha. */
 357                 chan_hash::iterator n = Instance->chanlist.find(cname);
 358                 if (n != Instance->chanlist.end())
 359                 {
 360                         Ptr->DelUser(user);
 361                         DELETE(Ptr);
 362                         Instance->chanlist.erase(n);
 363                         for (unsigned int index =0; index < user->chans.size(); index++)
 364                         {
 365                                 if (user->chans[index]->channel == Ptr)
 366                                 {
 367                                         user->chans[index]->channel = NULL;
 368                                         user->chans[index]->uc_modes = 0;
 369                                 }
 370                         }
 371                 }
 372         }
 373         else
 374         {
 375                 for (unsigned int index =0; index < user->chans.size(); index++)
 376                 {
 377                         if (user->chans[index]->channel == Ptr)
 378                         {
 379                                 user->chans[index]->channel = NULL;
 380                                 user->chans[index]->uc_modes = 0;
 381                         }
 382                 }
 383         }
 384         return NULL;
 385 }
 386
 387 chanrec* chanrec::ForceChan(InspIRCd* Instance, chanrec* Ptr,ucrec *a,userrec* user, const std::string &privs)
 388 {
 389         userrec* dummyuser = new userrec(Instance);
 390         std::string nick = user->nick;
 391
 392         a->uc_modes = 0;
 393         dummyuser->SetFd(FD_MAGIC_NUMBER);
 394
 395         a->channel = Ptr;
 396         Ptr->AddUser(user);
 397         user->ModChannelCount(1);
 398
 399         for (std::string::const_iterator x = privs.begin(); x != privs.end(); x++)
 400         {
 401                 const char status = *x;
 402                 ModeHandler* mh = Instance->Modes->FindPrefix(status);
 403                 if (mh)
 404                 {
 405                         Ptr->SetPrefix(user, status, mh->GetPrefixRank(), true);
 406                         /* Make sure that the mode handler knows this mode was now set */
 407                         mh->OnModeChange(dummyuser, dummyuser, Ptr, nick, true);
 408                 }
 409         }
 410
 411         delete dummyuser;
 412
 413         Ptr->WriteChannel(user,"JOIN :%s",Ptr->name);
 414
 415         /* Theyre not the first ones in here, make sure everyone else sees the modes we gave the user */
 416         std::string ms = Instance->Modes->ModeString(user, Ptr);
 417         if ((Ptr->GetUserCounter() > 1) && (ms.length()))
 418                 Ptr->WriteAllExceptSender(user, true, 0, "MODE %s +%s", Ptr->name, ms.c_str());
 419
 420         /* Major improvement by Brain - we dont need to be calculating all this pointlessly for remote users */
 421         if (IS_LOCAL(user))
 422         {
 423                 if (Ptr->topicset)
 424                 {
 425                         user->WriteServ("332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
 426                         user->WriteServ("333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
 427                 }
 428                 Ptr->UserList(user);
 429         }
 430         FOREACH_MOD_I(Instance,I_OnUserJoin,OnUserJoin(user,Ptr));
 431         FOREACH_MOD_I(Instance,I_OnPostJoin,OnPostJoin(user,Ptr));
 432         return Ptr;
 433 }
 434
 435 bool chanrec::IsBanned(userrec* user)
 436 {
 437         char mask[MAXBUF];
 438         int MOD_RESULT = 0;
 439         FOREACH_RESULT(I_OnCheckBan,OnCheckBan(user, this));
 440         if (!MOD_RESULT)
 441         {
 442                 snprintf(mask, MAXBUF, "%s!%s@%s", user->nick, user->ident, user->GetIPString());
 443                 for (BanList::iterator i = this->bans.begin(); i != this->bans.end(); i++)
 444                 {
 445                         /* This allows CIDR ban matching
 446                          *
 447                          *        Full masked host                      Full unmasked host                   IP with/without CIDR
 448                          */
 449                         if ((match(user->GetFullHost(),i->data)) || (match(user->GetFullRealHost(),i->data)) || (match(mask, i->data, true)))
 450                         {
 451                                 return true;
 452                         }
 453                 }
 454         }
 455         return false;
 456 }
 457
 458 /* chanrec::PartUser
 459  * remove a channel from a users record, and return the number of users left.
 460  * Therefore, if this function returns 0 the caller should delete the chanrec.
 461  */
 462 long chanrec::PartUser(userrec *user, const char* reason)
 463 {
 464         if (!user)
 465                 return this->GetUserCounter();
 466
 467         for (unsigned int i =0; i < user->chans.size(); i++)
 468         {
 469                 /* zap it from the channel list of the user */
 470                 if (user->chans[i]->channel == this)
 471                 {
 472                         FOREACH_MOD(I_OnUserPart,OnUserPart(user, this, reason ? reason : ""));
 473                         this->WriteChannel(user, "PART %s%s%s", this->name, reason ? " :" : "", reason ? reason : "");
 474                         user->chans[i]->uc_modes = 0;
 475                         user->chans[i]->channel = NULL;
 476                         user->ModChannelCount(-1);
 477                         this->RemoveAllPrefixes(user);
 478                         break;
 479                 }
 480         }
 481
 482         if (!this->DelUser(user)) /* if there are no users left on the channel... */
 483         {
 484                 chan_hash::iterator iter = ServerInstance->chanlist.find(this->name);
 485                 /* kill the record */
 486                 if (iter != ServerInstance->chanlist.end())
 487                 {
 488                         ServerInstance->Log(DEBUG,"del_channel: destroyed: %s", this->name);
 489                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 490                         ServerInstance->chanlist.erase(iter);
 491                 }
 492                 return 0;
 493         }
 494
 495         return this->GetUserCounter();
 496 }
 497
 498 long chanrec::ServerKickUser(userrec* user, const char* reason, bool triggerevents)
 499 {
 500         if (!user || !reason)
 501                 return this->GetUserCounter();
 502
 503         if (IS_LOCAL(user))
 504         {
 505                 if (!this->HasUser(user))
 506                 {
 507                         /* Not on channel */
 508                         return this->GetUserCounter();
 509                 }
 510         }
 511
 512         if (triggerevents)
 513         {
 514                 FOREACH_MOD(I_OnUserKick,OnUserKick(NULL,user,this,reason));
 515         }
 516
 517         for (unsigned int i =0; i < user->chans.size(); i++)
 518         {
 519                 if (user->chans[i]->channel == this)
 520                 {
 521                         this->WriteChannelWithServ(ServerInstance->Config->ServerName, "KICK %s %s :%s", this->name, user->nick, reason);
 522                         user->chans[i]->uc_modes = 0;
 523                         user->chans[i]->channel = NULL;
 524                         this->RemoveAllPrefixes(user);
 525                         break;
 526                 }
 527         }
 528
 529         if (!this->DelUser(user))
 530         {
 531                 chan_hash::iterator iter = ServerInstance->chanlist.find(this->name);
 532                 /* kill the record */
 533                 if (iter != ServerInstance->chanlist.end())
 534                 {
 535                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 536                         ServerInstance->chanlist.erase(iter);
 537                 }
 538                 return 0;
 539         }
 540
 541         return this->GetUserCounter();
 542 }
 543
 544 long chanrec::KickUser(userrec *src, userrec *user, const char* reason)
 545 {
 546         if (!src || !user || !reason)
 547                 return this->GetUserCounter();
 548
 549         if (IS_LOCAL(src))
 550         {
 551                 if (!this->HasUser(user))
 552                 {
 553                         src->WriteServ("441 %s %s %s :They are not on that channel",src->nick, user->nick, this->name);
 554                         return this->GetUserCounter();
 555                 }
 556                 if ((ServerInstance->ULine(user->server)) && (!ServerInstance->ULine(src->server)))
 557                 {
 558                         src->WriteServ("482 %s %s :Only a u-line may kick a u-line from a channel.",src->nick, this->name);
 559                         return this->GetUserCounter();
 560                 }
 561                 int MOD_RESULT = 0;
 562
 563                 if (!ServerInstance->ULine(src->server))
 564                 {
 565                         MOD_RESULT = 0;
 566                         FOREACH_RESULT(I_OnUserPreKick,OnUserPreKick(src,user,this,reason));
 567                         if (MOD_RESULT == 1)
 568                                 return this->GetUserCounter();
 569                 }
 570                 /* Set to -1 by OnUserPreKick if explicit allow was set */
 571                 if (MOD_RESULT != -1)
 572                 {
 573                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(src,user,this,AC_KICK));
 574                         if ((MOD_RESULT == ACR_DENY) && (!ServerInstance->ULine(src->server)))
 575                                 return this->GetUserCounter();
 576
 577                         if ((MOD_RESULT == ACR_DEFAULT) || (!ServerInstance->ULine(src->server)))
 578                         {
 579                                 int them = this->GetStatus(src);
 580                                 int us = this->GetStatus(user);
 581                                 if ((them < STATUS_HOP) || (them < us))
 582                                 {
 583                                         src->WriteServ("482 %s %s :You must be a channel %soperator",src->nick, this->name, them == STATUS_HOP ? "" : "half-");
 584                                         return this->GetUserCounter();
 585                                 }
 586                         }
 587                 }
 588         }
 589
 590         FOREACH_MOD(I_OnUserKick,OnUserKick(src,user,this,reason));
 591
 592         for (UserChanList::const_iterator i = user->chans.begin(); i != user->chans.end(); i++)
 593         {
 594                 /* zap it from the channel list of the user */
 595                 if ((*i)->channel == this)
 596                 {
 597                         this->WriteChannel(src, "KICK %s %s :%s", this->name, user->nick, reason);
 598                         (*i)->uc_modes = 0;
 599                         (*i)->channel = NULL;
 600                         this->RemoveAllPrefixes(user);
 601                         break;
 602                 }
 603         }
 604
 605         if (!this->DelUser(user))
 606         /* if there are no users left on the channel */
 607         {
 608                 chan_hash::iterator iter = ServerInstance->chanlist.find(this->name);
 609
 610                 /* kill the record */
 611                 if (iter != ServerInstance->chanlist.end())
 612                 {
 613                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 614                         ServerInstance->chanlist.erase(iter);
 615                 }
 616                 return 0;
 617         }
 618
 619         return this->GetUserCounter();
 620 }
 621
 622 void chanrec::WriteChannel(userrec* user, char* text, ...)
 623 {
 624         char textbuffer[MAXBUF];
 625         va_list argsPtr;
 626
 627         if (!user || !text)
 628                 return;
 629
 630         va_start(argsPtr, text);
 631         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 632         va_end(argsPtr);
 633
 634         this->WriteChannel(user, std::string(textbuffer));
 635 }
 636
 637 void chanrec::WriteChannel(userrec* user, const std::string &text)
 638 {
 639         CUList *ulist = this->GetUsers();
 640
 641         if (!user)
 642                 return;
 643
 644         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 645         {
 646                 if (IS_LOCAL(i->second))
 647                         user->WriteTo(i->second,text);
 648         }
 649 }
 650
 651 void chanrec::WriteChannelWithServ(const char* ServName, const char* text, ...)
 652 {
 653         char textbuffer[MAXBUF];
 654         va_list argsPtr;
 655
 656         if (!text)
 657                 return;
 658
 659         va_start(argsPtr, text);
 660         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 661         va_end(argsPtr);
 662
 663         this->WriteChannelWithServ(ServName, std::string(textbuffer));
 664 }
 665
 666 void chanrec::WriteChannelWithServ(const char* ServName, const std::string &text)
 667 {
 668         CUList *ulist = this->GetUsers();
 669
 670         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 671         {
 672                 if (IS_LOCAL(i->second))
 673                         i->second->WriteServ(text);
 674         }
 675 }
 676
 677 /* write formatted text from a source user to all users on a channel except
 678  * for the sender (for privmsg etc) */
 679 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, char* text, ...)
 680 {
 681         char textbuffer[MAXBUF];
 682         va_list argsPtr;
 683
 684         if (!text)
 685                 return;
 686
 687         va_start(argsPtr, text);
 688         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 689         va_end(argsPtr);
 690
 691         this->WriteAllExceptSender(user, serversource, status, std::string(textbuffer));
 692 }
 693
 694 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, const std::string& text)
 695 {
 696         CUList *ulist;
 697
 698         switch (status)
 699         {
 700                 case '@':
 701                         ulist = this->GetOppedUsers();
 702                         break;
 703                 case '%':
 704                         ulist = this->GetHalfoppedUsers();
 705                         break;
 706                 case '+':
 707                         ulist = this->GetVoicedUsers();
 708                         break;
 709                 default:
 710                         ulist = this->GetUsers();
 711                         break;
 712         }
 713
 714         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 715         {
 716                 if ((IS_LOCAL(i->second)) && (user != i->second))
 717                 {
 718                         if (serversource)
 719                                 i->second->WriteServ(text);
 720                         else
 721                                 i->second->WriteFrom(user,text);
 722                 }
 723         }
 724 }
 725
 726 /*
 727  * return a count of the users on a specific channel accounting for
 728  * invisible users who won't increase the count. e.g. for /LIST
 729  */
 730 int chanrec::CountInvisible()
 731 {
 732         int count = 0;
 733         CUList *ulist= this->GetUsers();
 734         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 735         {
 736                 if (!(i->second->modes[UM_INVISIBLE]))
 737                         count++;
 738         }
 739
 740         return count;
 741 }
 742
 743 char* chanrec::ChanModes(bool showkey)
 744 {
 745         static char scratch[MAXBUF];
 746         static char sparam[MAXBUF];
 747         char* offset = scratch;
 748         std::string extparam = "";
 749
 750         *scratch = '\0';
 751         *sparam = '\0';
 752
 753         /* This was still iterating up to 190, chanrec::modes is only 64 elements -- Om */
 754         for(int n = 0; n < 64; n++)
 755         {
 756                 if(this->modes[n])
 757                 {
 758                         *offset++ = n + 65;
 759                         extparam = "";
 760                         switch (n)
 761                         {
 762                                 case CM_KEY:
 763                                         extparam = (showkey ? this->key : "<key>");
 764                                 break;
 765                                 case CM_LIMIT:
 766                                         extparam = ConvToStr(this->limit);
 767                                 break;
 768                                 case CM_NOEXTERNAL:
 769                                 case CM_TOPICLOCK:
 770                                 case CM_INVITEONLY:
 771                                 case CM_MODERATED:
 772                                 case CM_SECRET:
 773                                 case CM_PRIVATE:
 774                                         /* We know these have no parameters */
 775                                 break;
 776                                 default:
 777                                         extparam = this->GetModeParameter(n + 65);
 778                                 break;
 779                         }
 780                         if (extparam != "")
 781                         {
 782                                 charlcat(sparam,' ',MAXBUF);
 783                                 strlcat(sparam,extparam.c_str(),MAXBUF);
 784                         }
 785                 }
 786         }
 787
 788         /* Null terminate scratch */
 789         *offset = '\0';
 790         strlcat(scratch,sparam,MAXBUF);
 791         return scratch;
 792 }
 793
 794 /* compile a userlist of a channel into a string, each nick seperated by
 795  * spaces and op, voice etc status shown as @ and +, and send it to 'user'
 796  */
 797 void chanrec::UserList(userrec *user)
 798 {
 799         char list[MAXBUF];
 800         size_t dlen, curlen;
 801         int MOD_RESULT = 0;
 802
 803         if (!IS_LOCAL(user))
 804                 return;
 805
 806         FOREACH_RESULT(I_OnUserList,OnUserList(user, this));
 807         ServerInstance->Log(DEBUG,"MOD_RESULT for UserList = %d",MOD_RESULT);
 808         if (MOD_RESULT == 1)
 809                 return;
 810
 811         ServerInstance->Log(DEBUG,"Using builtin NAMES list generation");
 812
 813         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 814
 815         int numusers = 0;
 816         char* ptr = list + dlen;
 817
 818         CUList *ulist= this->GetUsers();
 819
 820         /* Improvement by Brain - this doesnt change in value, so why was it inside
 821          * the loop?
 822          */
 823         bool has_user = this->HasUser(user);
 824
 825         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 826         {
 827                 if ((!has_user) && (i->second->modes[UM_INVISIBLE]))
 828                 {
 829                         /*
 830                          * user is +i, and source not on the channel, does not show
 831                          * nick in NAMES list
 832                          */
 833                         continue;
 834                 }
 835
 836                 size_t ptrlen = snprintf(ptr, MAXBUF, "%s%s ", this->GetPrefixChar(i->second), i->second->nick);
 837
 838                 curlen += ptrlen;
 839                 ptr += ptrlen;
 840
 841                 numusers++;
 842
 843                 if (curlen > (480-NICKMAX))
 844                 {
 845                         /* list overflowed into multiple numerics */
 846                         user->WriteServ(std::string(list));
 847
 848                         /* reset our lengths */
 849                         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 850                         ptr = list + dlen;
 851
 852                         ptrlen = 0;
 853                         numusers = 0;
 854                 }
 855         }
 856
 857         /* if whats left in the list isnt empty, send it */
 858         if (numusers)
 859         {
 860                 user->WriteServ(std::string(list));
 861         }
 862
 863         user->WriteServ("366 %s %s :End of /NAMES list.", user->nick, this->name);
 864 }
 865
 866 long chanrec::GetMaxBans()
 867 {
 868         for (std::map<std::string,int>::iterator n = ServerInstance->Config->maxbans.begin(); n != ServerInstance->Config->maxbans.end(); n++)
 869         {
 870                 if (match(this->name,n->first.c_str()))
 871                 {
 872                         return n->second;
 873                 }
 874         }
 875         return 64;
 876 }
 877
 878
 879 /* returns the status character for a given user on a channel, e.g. @ for op,
 880  * % for halfop etc. If the user has several modes set, the highest mode
 881  * the user has must be returned.
 882  */
 883 const char* chanrec::GetPrefixChar(userrec *user)
 884 {
 885         static char pf[2] = {0, 0};
 886
 887         prefixlist::iterator n = prefixes.find(user);
 888         if (n != prefixes.end())
 889         {
 890                 if (n->second.size())
 891                 {
 892                         /* If the user has any prefixes, their highest prefix
 893                          * will always be at the head of the list, as the list is
 894                          * sorted in rank order highest first (see SetPrefix()
 895                          * for reasons why)
 896                          */
 897                         *pf = n->second.begin()->first;
 898                         return pf;
 899                 }
 900         }
 901
 902         *pf = 0;
 903         return pf;
 904 }
 905
 906 const char* chanrec::GetAllPrefixChars(userrec* user)
 907 {
 908         static char prefix[MAXBUF];
 909         int ctr = 0;
 910         *prefix = 0;
 911
 912         prefixlist::iterator n = prefixes.find(user);
 913         if (n != prefixes.end())
 914         {
 915                 for (std::vector<prefixtype>::iterator x = n->second.begin(); x != n->second.end(); x++)
 916                 {
 917                         prefix[ctr++] = x->first;
 918                 }
 919         }
 920
 921         prefix[ctr] = 0;
 922
 923         return prefix;
 924 }
 925
 926 unsigned int chanrec::GetPrefixValue(userrec* user)
 927 {
 928         prefixlist::iterator n = prefixes.find(user);
 929         if (n != prefixes.end())
 930         {
 931                 if (n->second.size())
 932                         return n->second.begin()->second;
 933         }
 934         return 0;
 935 }
 936
 937
 938 int chanrec::GetStatusFlags(userrec *user)
 939 {
 940         for (std::vector<ucrec*>::const_iterator i = user->chans.begin(); i != user->chans.end(); i++)
 941         {
 942                 if ((*i)->channel == this)
 943                 {
 944                         return (*i)->uc_modes;
 945                 }
 946         }
 947         return 0;
 948 }
 949
 950
 951 int chanrec::GetStatus(userrec *user)
 952 {
 953         if (ServerInstance->ULine(user->server))
 954                 return STATUS_OP;
 955
 956         for (std::vector<ucrec*>::const_iterator i = user->chans.begin(); i != user->chans.end(); i++)
 957         {
 958                 if ((*i)->channel == this)
 959                 {
 960                         if (((*i)->uc_modes & UCMODE_OP) > 0)
 961                         {
 962                                 return STATUS_OP;
 963                         }
 964                         if (((*i)->uc_modes & UCMODE_HOP) > 0)
 965                         {
 966                                 return STATUS_HOP;
 967                         }
 968                         if (((*i)->uc_modes & UCMODE_VOICE) > 0)
 969                         {
 970                                 return STATUS_VOICE;
 971                         }
 972                         return STATUS_NORMAL;
 973                 }
 974         }
 975         return STATUS_NORMAL;
 976 }
 977
 978 void chanrec::SetPrefix(userrec* user, char prefix, unsigned int prefix_value, bool adding)
 979 {
 980         prefixlist::iterator n = prefixes.find(user);
 981         prefixtype pfx = std::make_pair(prefix,prefix_value);
 982         if (adding)
 983         {
 984                 if (n != prefixes.end())
 985                 {
 986                         if (std::find(n->second.begin(), n->second.end(), pfx) == n->second.end())
 987                         {
 988                                 n->second.push_back(pfx);
 989                                 /* We must keep prefixes in rank order, largest first.
 990                                  * This is for two reasons, firstly because x-chat *ass-u-me's* this
 991                                  * state, and secondly it turns out to be a benefit to us later.
 992                                  * See above in GetPrefix().
 993                                  */
 994                                 std::sort(n->second.begin(), n->second.end(), ModeParser::PrefixComparison);
 995                         }
 996                 }
 997                 else
 998                 {
 999                         pfxcontainer one;
1000                         one.push_back(pfx);
1001                         prefixes.insert(std::make_pair<userrec*,pfxcontainer>(user, one));
1002                 }
1003         }
1004         else
1005         {
1006                 if (n != prefixes.end())
1007                 {
1008                         pfxcontainer::iterator x = std::find(n->second.begin(), n->second.end(), pfx);
1009                         if (x != n->second.end())
1010                                 n->second.erase(x);
1011                 }
1012         }
1013         ServerInstance->Log(DEBUG,"Added prefix %c to %s for %s, prefixlist size is now %d", prefix, this->name, user->nick, prefixes.size());
1014 }
1015
1016 void chanrec::RemoveAllPrefixes(userrec* user)
1017 {
1018         prefixlist::iterator n = prefixes.find(user);
1019         if (n != prefixes.end())
1020         {
1021                 ServerInstance->Log(DEBUG,"Removed prefixes from %s for %s, prefixlist size is now %d", this->name, user->nick, prefixes.size());
1022                 prefixes.erase(n);
1023         }
1024 }
1025