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 "inspircd.h"
  15 #include <stdarg.h>
  16 #include "configreader.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->nick;
  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->nick;
 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->nick;
 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->nick;
 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 void chanrec::SetDefaultModes()
 176 {
 177         irc::spacesepstream list(ServerInstance->Config->DefaultModes);
 178         std::string modeseq = list.GetToken();
 179         std::string parameter;
 180         userrec* dummyuser = new userrec(ServerInstance);
 181         dummyuser->SetFd(FD_MAGIC_NUMBER);
 182
 183         for (std::string::iterator n = modeseq.begin(); n != modeseq.end(); ++n)
 184         {
 185                 ModeHandler* mode = ServerInstance->Modes->FindMode(*n, MODETYPE_CHANNEL);
 186                 if (mode)
 187                 {
 188                         if (mode->GetNumParams(true))
 189                                 parameter = list.GetToken().c_str();
 190                         else
 191                                 parameter.clear();
 192
 193                         mode->OnModeChange(dummyuser, dummyuser, this, parameter, true);
 194                 }
 195         }
 196
 197         delete dummyuser;
 198 }
 199
 200 /*
 201  * add a channel to a user, creating the record for it if needed and linking
 202  * it to the user record
 203  */
 204 chanrec* chanrec::JoinUser(InspIRCd* Instance, userrec *user, const char* cn, bool override, const char* key, time_t TS)
 205 {
 206         if (!user || !cn)
 207                 return NULL;
 208
 209         bool new_channel = false;
 210         char cname[MAXBUF];
 211         int MOD_RESULT = 0;
 212         strlcpy(cname,cn,CHANMAX);
 213
 214         std::string privs;
 215
 216         chanrec* Ptr = Instance->FindChan(cname);
 217
 218         if (!Ptr)
 219         {
 220                 /*
 221                  * Fix: desync bug was here, don't set @ on remote users - spanningtree handles their permissions. bug #358. -- w00t
 222                  */
 223                 if (!IS_LOCAL(user))
 224                 {
 225                         if (!TS)
 226                                 Instance->Log(DEBUG,"*** BUG *** chanrec::JoinUser called for REMOTE user '%s' on channel '%s' but no TS given!", user->nick, cn);
 227                 }
 228                 else
 229                 {
 230                         privs = "@";
 231                 }
 232
 233                 if (IS_LOCAL(user) && override == false)
 234                 {
 235                         MOD_RESULT = 0;
 236                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,NULL,cname,privs));
 237                         if (MOD_RESULT == 1)
 238                                 return NULL;
 239                 }
 240
 241                 /* create a new one */
 242                 Ptr = new chanrec(Instance);
 243                 (*(Instance->chanlist))[cname] = Ptr;
 244
 245                 strlcpy(Ptr->name, cname,CHANMAX);
 246
 247                 /* As spotted by jilles, dont bother to set this on remote users */
 248                 if (IS_LOCAL(user))
 249                         Ptr->SetDefaultModes();
 250
 251                 Ptr->created = TS ? TS : Instance->Time();
 252                 Ptr->age = Ptr->created;
 253                 *Ptr->topic = 0;
 254                 *Ptr->setby = 0;
 255                 Ptr->topicset = 0;
 256                 new_channel = true;
 257         }
 258         else
 259         {
 260                 /* Already on the channel */
 261                 if (Ptr->HasUser(user))
 262                         return NULL;
 263
 264                 /*
 265                  * remote users are allowed us to bypass channel modes
 266                  * and bans (used by servers)
 267                  */
 268                 if (IS_LOCAL(user) && override == false)
 269                 {
 270                         MOD_RESULT = 0;
 271                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,Ptr,cname,privs));
 272                         if (MOD_RESULT == 1)
 273                         {
 274                                 return NULL;
 275                         }
 276                         else if (MOD_RESULT == 0)
 277                         {
 278                                 if (*Ptr->key)
 279                                 {
 280                                         MOD_RESULT = 0;
 281                                         FOREACH_RESULT_I(Instance,I_OnCheckKey,OnCheckKey(user, Ptr, key ? key : ""));
 282                                         if (!MOD_RESULT)
 283                                         {
 284                                                 if ((!key) || strcmp(key,Ptr->key))
 285                                                 {
 286                                                         user->WriteServ("475 %s %s :Cannot join channel (Incorrect channel key)",user->nick, Ptr->name);
 287                                                         return NULL;
 288                                                 }
 289                                         }
 290                                 }
 291                                 if (Ptr->modes[CM_INVITEONLY])
 292                                 {
 293                                         MOD_RESULT = 0;
 294                                         FOREACH_RESULT_I(Instance,I_OnCheckInvite,OnCheckInvite(user, Ptr));
 295                                         if (!MOD_RESULT)
 296                                         {
 297                                                 if (user->IsInvited(Ptr->name))
 298                                                 {
 299                                                         /* user was invited to channel */
 300                                                         /* there may be an optional channel NOTICE here */
 301                                                 }
 302                                                 else
 303                                                 {
 304                                                         user->WriteServ("473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
 305                                                         return NULL;
 306                                                 }
 307                                         }
 308                                         user->RemoveInvite(Ptr->name);
 309                                 }
 310                                 if (Ptr->limit)
 311                                 {
 312                                         MOD_RESULT = 0;
 313                                         FOREACH_RESULT_I(Instance,I_OnCheckLimit,OnCheckLimit(user, Ptr));
 314                                         if (!MOD_RESULT)
 315                                         {
 316                                                 if (Ptr->GetUserCounter() >= Ptr->limit)
 317                                                 {
 318                                                         user->WriteServ("471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
 319                                                         return NULL;
 320                                                 }
 321                                         }
 322                                 }
 323                                 if (Ptr->bans.size())
 324                                 {
 325                                         if (Ptr->IsBanned(user))
 326                                         {
 327                                                 user->WriteServ("474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
 328                                                 return NULL;
 329                                         }
 330                                 }
 331                         }
 332                 }
 333         }
 334
 335         /* NOTE: If the user is an oper here, we can extend their user->chans by up to
 336          * OperMaxchans. For remote users which are not bound by the channel limits,
 337          * we can extend infinitely. Otherwise, nope, youre restricted to MaxChans.
 338          */
 339         if (!IS_LOCAL(user) || override == true)
 340         {
 341                 return chanrec::ForceChan(Instance, Ptr, user, privs);
 342         }
 343         else if (IS_OPER(user))
 344         {
 345                 /* Oper allows extension up to the OperMaxchans value */
 346                 if (user->chans.size() < Instance->Config->OperMaxChans)
 347                 {
 348                         return chanrec::ForceChan(Instance, Ptr, user, privs);
 349                 }
 350         }
 351         else if (user->chans.size() < Instance->Config->MaxChans)
 352         {
 353                 return chanrec::ForceChan(Instance, Ptr, user, privs);
 354         }
 355
 356
 357         user->WriteServ("405 %s %s :You are on too many channels",user->nick, cname);
 358
 359         if (new_channel)
 360         {
 361                 /* Things went seriously pear shaped, so take this away. bwahaha. */
 362                 chan_hash::iterator n = Instance->chanlist->find(cname);
 363                 if (n != Instance->chanlist->end())
 364                 {
 365                         Ptr->DelUser(user);
 366                         DELETE(Ptr);
 367                         Instance->chanlist->erase(n);
 368                 }
 369         }
 370
 371         return NULL;
 372 }
 373
 374 chanrec* chanrec::ForceChan(InspIRCd* Instance, chanrec* Ptr, userrec* user, const std::string &privs)
 375 {
 376         userrec* dummyuser = new userrec(Instance);
 377         std::string nick = user->nick;
 378         bool silent = false;
 379
 380         dummyuser->SetFd(FD_MAGIC_NUMBER);
 381         Ptr->AddUser(user);
 382
 383         /* Just in case they have no permissions */
 384         user->chans[Ptr] = 0;
 385
 386         for (std::string::const_iterator x = privs.begin(); x != privs.end(); x++)
 387         {
 388                 const char status = *x;
 389                 ModeHandler* mh = Instance->Modes->FindPrefix(status);
 390                 if (mh)
 391                 {
 392                         Ptr->SetPrefix(user, status, mh->GetPrefixRank(), true);
 393                         /* Make sure that the mode handler knows this mode was now set */
 394                         mh->OnModeChange(dummyuser, dummyuser, Ptr, nick, true);
 395
 396                         switch (mh->GetPrefix())
 397                         {
 398                                 /* These logic ops are SAFE IN THIS CASE
 399                                  * because if the entry doesnt exist,
 400                                  * addressing operator[] creates it.
 401                                  * If they do exist, it points to it.
 402                                  * At all other times where we dont want
 403                                  * to create an item if it doesnt exist, we
 404                                  * must stick to ::find().
 405                                  */
 406                                 case '@':
 407                                         user->chans[Ptr] |= UCMODE_OP;
 408                                 break;
 409                                 case '%':
 410                                         user->chans[Ptr] |= UCMODE_HOP;
 411                                 break;
 412                                 case '+':
 413                                         user->chans[Ptr] |= UCMODE_VOICE;
 414                                 break;
 415                         }
 416                 }
 417         }
 418
 419         delete dummyuser;
 420
 421         FOREACH_MOD_I(Instance,I_OnUserJoin,OnUserJoin(user, Ptr, silent));
 422
 423         if (!silent)
 424                 Ptr->WriteChannel(user,"JOIN :%s",Ptr->name);
 425
 426         /* Theyre not the first ones in here, make sure everyone else sees the modes we gave the user */
 427         std::string ms = Instance->Modes->ModeString(user, Ptr);
 428         if ((Ptr->GetUserCounter() > 1) && (ms.length()))
 429                 Ptr->WriteAllExceptSender(user, true, 0, "MODE %s +%s", Ptr->name, ms.c_str());
 430
 431         /* Major improvement by Brain - we dont need to be calculating all this pointlessly for remote users */
 432         if (IS_LOCAL(user))
 433         {
 434                 if (Ptr->topicset)
 435                 {
 436                         user->WriteServ("332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
 437                         user->WriteServ("333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
 438                 }
 439                 Ptr->UserList(user);
 440         }
 441         FOREACH_MOD_I(Instance,I_OnPostJoin,OnPostJoin(user, Ptr));
 442         return Ptr;
 443 }
 444
 445 bool chanrec::IsBanned(userrec* user)
 446 {
 447         char mask[MAXBUF];
 448         int MOD_RESULT = 0;
 449         FOREACH_RESULT(I_OnCheckBan,OnCheckBan(user, this));
 450         if (!MOD_RESULT)
 451         {
 452                 snprintf(mask, MAXBUF, "%s!%s@%s", user->nick, user->ident, user->GetIPString());
 453                 for (BanList::iterator i = this->bans.begin(); i != this->bans.end(); i++)
 454                 {
 455                         /* This allows CIDR ban matching
 456                          *
 457                          *        Full masked host                      Full unmasked host                   IP with/without CIDR
 458                          */
 459                         if ((match(user->GetFullHost(),i->data)) || (match(user->GetFullRealHost(),i->data)) || (match(mask, i->data, true)))
 460                         {
 461                                 return true;
 462                         }
 463                 }
 464         }
 465         return false;
 466 }
 467
 468 /* chanrec::PartUser
 469  * remove a channel from a users record, and return the number of users left.
 470  * Therefore, if this function returns 0 the caller should delete the chanrec.
 471  */
 472 long chanrec::PartUser(userrec *user, const char* reason)
 473 {
 474         bool silent = false;
 475
 476         if (!user)
 477                 return this->GetUserCounter();
 478
 479         UCListIter i = user->chans.find(this);
 480         if (i != user->chans.end())
 481         {
 482                 FOREACH_MOD(I_OnUserPart,OnUserPart(user, this, reason ? reason : "", silent));
 483
 484                 if (!silent)
 485                         this->WriteChannel(user, "PART %s%s%s", this->name, reason ? " :" : "", reason ? reason : "");
 486
 487                 user->chans.erase(i);
 488                 this->RemoveAllPrefixes(user);
 489         }
 490
 491         if (!this->DelUser(user)) /* if there are no users left on the channel... */
 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::ServerKickUser(userrec* user, const char* reason, bool triggerevents)
 507 {
 508         bool silent = false;
 509
 510         if (!user || !reason)
 511                 return this->GetUserCounter();
 512
 513         if (IS_LOCAL(user))
 514         {
 515                 if (!this->HasUser(user))
 516                 {
 517                         /* Not on channel */
 518                         return this->GetUserCounter();
 519                 }
 520         }
 521
 522         if (triggerevents)
 523         {
 524                 FOREACH_MOD(I_OnUserKick,OnUserKick(NULL, user, this, reason, silent));
 525         }
 526
 527         UCListIter i = user->chans.find(this);
 528         if (i != user->chans.end())
 529         {
 530                 if (!silent)
 531                         this->WriteChannelWithServ(ServerInstance->Config->ServerName, "KICK %s %s :%s", this->name, user->nick, reason);
 532
 533                 user->chans.erase(i);
 534                 this->RemoveAllPrefixes(user);
 535         }
 536
 537         if (!this->DelUser(user))
 538         {
 539                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 540                 /* kill the record */
 541                 if (iter != ServerInstance->chanlist->end())
 542                 {
 543                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 544                         ServerInstance->chanlist->erase(iter);
 545                 }
 546                 return 0;
 547         }
 548
 549         return this->GetUserCounter();
 550 }
 551
 552 long chanrec::KickUser(userrec *src, userrec *user, const char* reason)
 553 {
 554         bool silent = false;
 555
 556         if (!src || !user || !reason)
 557                 return this->GetUserCounter();
 558
 559         if (IS_LOCAL(src))
 560         {
 561                 if (!this->HasUser(user))
 562                 {
 563                         src->WriteServ("441 %s %s %s :They are not on that channel",src->nick, user->nick, this->name);
 564                         return this->GetUserCounter();
 565                 }
 566                 if ((ServerInstance->ULine(user->server)) && (!ServerInstance->ULine(src->server)))
 567                 {
 568                         src->WriteServ("482 %s %s :Only a u-line may kick a u-line from a channel.",src->nick, this->name);
 569                         return this->GetUserCounter();
 570                 }
 571                 int MOD_RESULT = 0;
 572
 573                 if (!ServerInstance->ULine(src->server))
 574                 {
 575                         MOD_RESULT = 0;
 576                         FOREACH_RESULT(I_OnUserPreKick,OnUserPreKick(src,user,this,reason));
 577                         if (MOD_RESULT == 1)
 578                                 return this->GetUserCounter();
 579                 }
 580                 /* Set to -1 by OnUserPreKick if explicit allow was set */
 581                 if (MOD_RESULT != -1)
 582                 {
 583                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(src,user,this,AC_KICK));
 584                         if ((MOD_RESULT == ACR_DENY) && (!ServerInstance->ULine(src->server)))
 585                                 return this->GetUserCounter();
 586
 587                         if ((MOD_RESULT == ACR_DEFAULT) || (!ServerInstance->ULine(src->server)))
 588                         {
 589                                 int them = this->GetStatus(src);
 590                                 int us = this->GetStatus(user);
 591                                 if ((them < STATUS_HOP) || (them < us))
 592                                 {
 593                                         src->WriteServ("482 %s %s :You must be a channel %soperator",src->nick, this->name, them == STATUS_HOP ? "" : "half-");
 594                                         return this->GetUserCounter();
 595                                 }
 596                         }
 597                 }
 598         }
 599
 600         FOREACH_MOD(I_OnUserKick,OnUserKick(src, user, this, reason, silent));
 601
 602         UCListIter i = user->chans.find(this);
 603         if (i != user->chans.end())
 604         {
 605                 /* zap it from the channel list of the user */
 606                 if (!silent)
 607                         this->WriteChannel(src, "KICK %s %s :%s", this->name, user->nick, reason);
 608
 609                 user->chans.erase(i);
 610                 this->RemoveAllPrefixes(user);
 611         }
 612
 613         if (!this->DelUser(user))
 614         /* if there are no users left on the channel */
 615         {
 616                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 617
 618                 /* kill the record */
 619                 if (iter != ServerInstance->chanlist->end())
 620                 {
 621                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 622                         ServerInstance->chanlist->erase(iter);
 623                 }
 624                 return 0;
 625         }
 626
 627         return this->GetUserCounter();
 628 }
 629
 630 void chanrec::WriteChannel(userrec* user, char* text, ...)
 631 {
 632         char textbuffer[MAXBUF];
 633         va_list argsPtr;
 634
 635         if (!user || !text)
 636                 return;
 637
 638         va_start(argsPtr, text);
 639         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 640         va_end(argsPtr);
 641
 642         this->WriteChannel(user, std::string(textbuffer));
 643 }
 644
 645 void chanrec::WriteChannel(userrec* user, const std::string &text)
 646 {
 647         CUList *ulist = this->GetUsers();
 648         char tb[MAXBUF];
 649
 650         if (!user)
 651                 return;
 652
 653         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 654         std::string out = tb;
 655
 656         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 657         {
 658                 if (IS_LOCAL(i->first))
 659                         i->first->Write(out);
 660         }
 661 }
 662
 663 void chanrec::WriteChannelWithServ(const char* ServName, const char* text, ...)
 664 {
 665         char textbuffer[MAXBUF];
 666         va_list argsPtr;
 667
 668         if (!text)
 669                 return;
 670
 671         va_start(argsPtr, text);
 672         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 673         va_end(argsPtr);
 674
 675         this->WriteChannelWithServ(ServName, std::string(textbuffer));
 676 }
 677
 678 void chanrec::WriteChannelWithServ(const char* ServName, const std::string &text)
 679 {
 680         CUList *ulist = this->GetUsers();
 681         char tb[MAXBUF];
 682
 683         snprintf(tb,MAXBUF,":%s %s",ServName ? ServName : ServerInstance->Config->ServerName, text.c_str());
 684         std::string out = tb;
 685
 686         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 687         {
 688                 if (IS_LOCAL(i->first))
 689                         i->first->Write(out);
 690         }
 691 }
 692
 693 /* write formatted text from a source user to all users on a channel except
 694  * for the sender (for privmsg etc) */
 695 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, char* text, ...)
 696 {
 697         char textbuffer[MAXBUF];
 698         va_list argsPtr;
 699
 700         if (!text)
 701                 return;
 702
 703         va_start(argsPtr, text);
 704         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 705         va_end(argsPtr);
 706
 707         this->WriteAllExceptSender(user, serversource, status, std::string(textbuffer));
 708 }
 709
 710 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, char* text, ...)
 711 {
 712         char textbuffer[MAXBUF];
 713         va_list argsPtr;
 714
 715         if (!text)
 716                 return;
 717
 718         va_start(argsPtr, text);
 719         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 720         va_end(argsPtr);
 721
 722         this->WriteAllExcept(user, serversource, status, except_list, std::string(textbuffer));
 723 }
 724
 725 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, const std::string &text)
 726 {
 727         CUList *ulist;
 728         char tb[MAXBUF];
 729
 730         switch (status)
 731         {
 732                 case '@':
 733                         ulist = this->GetOppedUsers();
 734                         break;
 735                 case '%':
 736                         ulist = this->GetHalfoppedUsers();
 737                         break;
 738                 case '+':
 739                         ulist = this->GetVoicedUsers();
 740                         break;
 741                 default:
 742                         ulist = this->GetUsers();
 743                         break;
 744         }
 745
 746         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 747         std::string out = tb;
 748
 749         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 750         {
 751                 if ((IS_LOCAL(i->first)) && (except_list.find(i->first) == except_list.end()))
 752                 {
 753                         if (serversource)
 754                                 i->first->WriteServ(text);
 755                         else
 756                                 i->first->Write(out);
 757                 }
 758         }
 759 }
 760
 761 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, const std::string& text)
 762 {
 763         CUList except_list;
 764         except_list[user] = user->nick;
 765         this->WriteAllExcept(user, serversource, status, except_list, std::string(text));
 766 }
 767
 768 /*
 769  * return a count of the users on a specific channel accounting for
 770  * invisible users who won't increase the count. e.g. for /LIST
 771  */
 772 int chanrec::CountInvisible()
 773 {
 774         int count = 0;
 775         CUList *ulist= this->GetUsers();
 776         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 777         {
 778                 if (!(i->first->IsModeSet('i')))
 779                         count++;
 780         }
 781
 782         return count;
 783 }
 784
 785 char* chanrec::ChanModes(bool showkey)
 786 {
 787         static char scratch[MAXBUF];
 788         static char sparam[MAXBUF];
 789         char* offset = scratch;
 790         std::string extparam;
 791
 792         *scratch = '\0';
 793         *sparam = '\0';
 794
 795         /* This was still iterating up to 190, chanrec::modes is only 64 elements -- Om */
 796         for(int n = 0; n < 64; n++)
 797         {
 798                 if(this->modes[n])
 799                 {
 800                         *offset++ = n + 65;
 801                         extparam.clear();
 802                         switch (n)
 803                         {
 804                                 case CM_KEY:
 805                                         extparam = (showkey ? this->key : "<key>");
 806                                 break;
 807                                 case CM_LIMIT:
 808                                         extparam = ConvToStr(this->limit);
 809                                 break;
 810                                 case CM_NOEXTERNAL:
 811                                 case CM_TOPICLOCK:
 812                                 case CM_INVITEONLY:
 813                                 case CM_MODERATED:
 814                                 case CM_SECRET:
 815                                 case CM_PRIVATE:
 816                                         /* We know these have no parameters */
 817                                 break;
 818                                 default:
 819                                         extparam = this->GetModeParameter(n + 65);
 820                                 break;
 821                         }
 822                         if (!extparam.empty())
 823                         {
 824                                 charlcat(sparam,' ',MAXBUF);
 825                                 strlcat(sparam,extparam.c_str(),MAXBUF);
 826                         }
 827                 }
 828         }
 829
 830         /* Null terminate scratch */
 831         *offset = '\0';
 832         strlcat(scratch,sparam,MAXBUF);
 833         return scratch;
 834 }
 835
 836 /* compile a userlist of a channel into a string, each nick seperated by
 837  * spaces and op, voice etc status shown as @ and +, and send it to 'user'
 838  */
 839 void chanrec::UserList(userrec *user, CUList *ulist)
 840 {
 841         char list[MAXBUF];
 842         size_t dlen, curlen;
 843         int MOD_RESULT = 0;
 844
 845         if (!IS_LOCAL(user))
 846                 return;
 847
 848         FOREACH_RESULT(I_OnUserList,OnUserList(user, this, ulist));
 849         if (MOD_RESULT == 1)
 850                 return;
 851
 852         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 853
 854         int numusers = 0;
 855         char* ptr = list + dlen;
 856
 857         if (!ulist)
 858                 ulist = this->GetUsers();
 859
 860         /* Improvement by Brain - this doesnt change in value, so why was it inside
 861          * the loop?
 862          */
 863         bool has_user = this->HasUser(user);
 864
 865         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 866         {
 867                 if ((!has_user) && (i->first->modes[UM_INVISIBLE]))
 868                 {
 869                         /*
 870                          * user is +i, and source not on the channel, does not show
 871                          * nick in NAMES list
 872                          */
 873                         continue;
 874                 }
 875
 876                 if (i->first->Visibility && !i->first->Visibility->VisibleTo(user))
 877                         continue;
 878
 879                 size_t ptrlen = snprintf(ptr, MAXBUF, "%s%s ", this->GetPrefixChar(i->first), i->second.c_str());
 880                 /* OnUserList can change this - reset it back to normal */
 881                 i->second = i->first->nick;
 882
 883                 curlen += ptrlen;
 884                 ptr += ptrlen;
 885
 886                 numusers++;
 887
 888                 if (curlen > (480-NICKMAX))
 889                 {
 890                         /* list overflowed into multiple numerics */
 891                         user->WriteServ(std::string(list));
 892
 893                         /* reset our lengths */
 894                         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 895                         ptr = list + dlen;
 896
 897                         ptrlen = 0;
 898                         numusers = 0;
 899                 }
 900         }
 901
 902         /* if whats left in the list isnt empty, send it */
 903         if (numusers)
 904         {
 905                 user->WriteServ(std::string(list));
 906         }
 907
 908         user->WriteServ("366 %s %s :End of /NAMES list.", user->nick, this->name);
 909 }
 910
 911 long chanrec::GetMaxBans()
 912 {
 913         /* Return the cached value if there is one */
 914         if (this->maxbans)
 915                 return this->maxbans;
 916
 917         /* If there isnt one, we have to do some O(n) hax to find it the first time. (ick) */
 918         for (std::map<std::string,int>::iterator n = ServerInstance->Config->maxbans.begin(); n != ServerInstance->Config->maxbans.end(); n++)
 919         {
 920                 if (match(this->name,n->first.c_str()))
 921                 {
 922                         this->maxbans = n->second;
 923                         return n->second;
 924                 }
 925         }
 926
 927         /* Screw it, just return the default of 64 */
 928         this->maxbans = 64;
 929         return this->maxbans;
 930 }
 931
 932 void chanrec::ResetMaxBans()
 933 {
 934         this->maxbans = 0;
 935 }
 936
 937 /* returns the status character for a given user on a channel, e.g. @ for op,
 938  * % for halfop etc. If the user has several modes set, the highest mode
 939  * the user has must be returned.
 940  */
 941 const char* chanrec::GetPrefixChar(userrec *user)
 942 {
 943         static char pf[2] = {0, 0};
 944
 945         prefixlist::iterator n = prefixes.find(user);
 946         if (n != prefixes.end())
 947         {
 948                 if (n->second.size())
 949                 {
 950                         /* If the user has any prefixes, their highest prefix
 951                          * will always be at the head of the list, as the list is
 952                          * sorted in rank order highest first (see SetPrefix()
 953                          * for reasons why)
 954                          */
 955                         *pf = n->second.begin()->first;
 956                         return pf;
 957                 }
 958         }
 959
 960         *pf = 0;
 961         return pf;
 962 }
 963
 964 const char* chanrec::GetAllPrefixChars(userrec* user)
 965 {
 966         static char prefix[MAXBUF];
 967         int ctr = 0;
 968         *prefix = 0;
 969
 970         prefixlist::iterator n = prefixes.find(user);
 971         if (n != prefixes.end())
 972         {
 973                 for (std::vector<prefixtype>::iterator x = n->second.begin(); x != n->second.end(); x++)
 974                 {
 975                         prefix[ctr++] = x->first;
 976                 }
 977         }
 978
 979         prefix[ctr] = 0;
 980
 981         return prefix;
 982 }
 983
 984 unsigned int chanrec::GetPrefixValue(userrec* user)
 985 {
 986         prefixlist::iterator n = prefixes.find(user);
 987         if (n != prefixes.end())
 988         {
 989                 if (n->second.size())
 990                         return n->second.begin()->second;
 991         }
 992         return 0;
 993 }
 994
 995 int chanrec::GetStatusFlags(userrec *user)
 996 {
 997         UCListIter i = user->chans.find(this);
 998         if (i != user->chans.end())
 999         {
1000                 return i->second;
1001         }
1002         return 0;
1003 }
1004
1005 int chanrec::GetStatus(userrec *user)
1006 {
1007         if (ServerInstance->ULine(user->server))
1008                 return STATUS_OP;
1009
1010         UCListIter i = user->chans.find(this);
1011         if (i != user->chans.end())
1012         {
1013                 if ((i->second & UCMODE_OP) > 0)
1014                 {
1015                         return STATUS_OP;
1016                 }
1017                 if ((i->second & UCMODE_HOP) > 0)
1018                 {
1019                         return STATUS_HOP;
1020                 }
1021                 if ((i->second & UCMODE_VOICE) > 0)
1022                 {
1023                         return STATUS_VOICE;
1024                 }
1025                 return STATUS_NORMAL;
1026         }
1027         return STATUS_NORMAL;
1028 }
1029
1030 void chanrec::SetPrefix(userrec* user, char prefix, unsigned int prefix_value, bool adding)
1031 {
1032         prefixlist::iterator n = prefixes.find(user);
1033         prefixtype pfx = std::make_pair(prefix,prefix_value);
1034         if (adding)
1035         {
1036                 if (n != prefixes.end())
1037                 {
1038                         if (std::find(n->second.begin(), n->second.end(), pfx) == n->second.end())
1039                         {
1040                                 n->second.push_back(pfx);
1041                                 /* We must keep prefixes in rank order, largest first.
1042                                  * This is for two reasons, firstly because x-chat *ass-u-me's* this
1043                                  * state, and secondly it turns out to be a benefit to us later.
1044                                  * See above in GetPrefix().
1045                                  */
1046                                 std::sort(n->second.begin(), n->second.end(), ModeParser::PrefixComparison);
1047                         }
1048                 }
1049                 else
1050                 {
1051                         pfxcontainer one;
1052                         one.push_back(pfx);
1053                         prefixes.insert(std::make_pair<userrec*,pfxcontainer>(user, one));
1054                 }
1055         }
1056         else
1057         {
1058                 if (n != prefixes.end())
1059                 {
1060                         pfxcontainer::iterator x = std::find(n->second.begin(), n->second.end(), pfx);
1061                         if (x != n->second.end())
1062                                 n->second.erase(x);
1063                 }
1064         }
1065 }
1066
1067 void chanrec::RemoveAllPrefixes(userrec* user)
1068 {
1069         prefixlist::iterator n = prefixes.find(user);
1070         if (n != prefixes.end())
1071         {
1072                 prefixes.erase(n);
1073         }
1074 }
1075