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) && override == false)
 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
 230                 /* As spotted by jilles, dont bother to set this on remote users */
 231                 if (IS_LOCAL(user))
 232                         Ptr->modes[CM_TOPICLOCK] = Ptr->modes[CM_NOEXTERNAL] = 1;
 233
 234                 Ptr->created = Instance->Time();
 235                 *Ptr->topic = 0;
 236                 *Ptr->setby = 0;
 237                 Ptr->topicset = 0;
 238                 Instance->Log(DEBUG,"chanrec::JoinUser(): created: %s",cname);
 239                 new_channel = true;
 240         }
 241         else
 242         {
 243                 /* Already on the channel */
 244                 if (Ptr->HasUser(user))
 245                         return NULL;
 246
 247                 /*
 248                  * remote users are allowed us to bypass channel modes
 249                  * and bans (used by servers)
 250                  */
 251                 if (IS_LOCAL(user) && override == false)
 252                 {
 253                         MOD_RESULT = 0;
 254                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,Ptr,cname,privs));
 255                         if (MOD_RESULT == 1)
 256                         {
 257                                 return NULL;
 258                         }
 259                         else if (MOD_RESULT == 0)
 260                         {
 261                                 if (*Ptr->key)
 262                                 {
 263                                         MOD_RESULT = 0;
 264                                         FOREACH_RESULT_I(Instance,I_OnCheckKey,OnCheckKey(user, Ptr, key ? key : ""));
 265                                         if (!MOD_RESULT)
 266                                         {
 267                                                 if ((!key) || strcmp(key,Ptr->key))
 268                                                 {
 269                                                         user->WriteServ("475 %s %s :Cannot join channel (Incorrect channel key)",user->nick, Ptr->name);
 270                                                         return NULL;
 271                                                 }
 272                                         }
 273                                 }
 274                                 if (Ptr->modes[CM_INVITEONLY])
 275                                 {
 276                                         MOD_RESULT = 0;
 277                                         irc::string xname(Ptr->name);
 278                                         FOREACH_RESULT_I(Instance,I_OnCheckInvite,OnCheckInvite(user, Ptr));
 279                                         if (!MOD_RESULT)
 280                                         {
 281                                                 if (user->IsInvited(xname))
 282                                                 {
 283                                                         /* user was invited to channel */
 284                                                         /* there may be an optional channel NOTICE here */
 285                                                 }
 286                                                 else
 287                                                 {
 288                                                         user->WriteServ("473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
 289                                                         return NULL;
 290                                                 }
 291                                         }
 292                                         user->RemoveInvite(xname);
 293                                 }
 294                                 if (Ptr->limit)
 295                                 {
 296                                         MOD_RESULT = 0;
 297                                         FOREACH_RESULT_I(Instance,I_OnCheckLimit,OnCheckLimit(user, Ptr));
 298                                         if (!MOD_RESULT)
 299                                         {
 300                                                 if (Ptr->GetUserCounter() >= Ptr->limit)
 301                                                 {
 302                                                         user->WriteServ("471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
 303                                                         return NULL;
 304                                                 }
 305                                         }
 306                                 }
 307                                 if (Ptr->bans.size())
 308                                 {
 309                                         if (Ptr->IsBanned(user))
 310                                         {
 311                                                 user->WriteServ("474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
 312                                                 return NULL;
 313                                         }
 314                                 }
 315                         }
 316                 }
 317                 else
 318                 {
 319                         Instance->Log(DEBUG,"chanrec::JoinUser(): Overridden checks");
 320                 }
 321         }
 322
 323         for (UserChanList::const_iterator index = user->chans.begin(); index != user->chans.end(); index++)
 324         {
 325                 if ((*index)->channel == NULL)
 326                 {
 327                         return chanrec::ForceChan(Instance, Ptr, *index, user, privs);
 328                 }
 329         }
 330
 331         /*
 332          * XXX: If the user is an oper here, we can just extend their user->chans vector by one
 333          * and put the channel in here. Same for remote users which are not bound by
 334          * the channel limits. Otherwise, nope, youre boned.
 335          */
 336         if (!IS_LOCAL(user) || override == true) /* was a check on fd < 0 */
 337         {
 338                 ucrec* a = new ucrec();
 339                 chanrec* c = chanrec::ForceChan(Instance, Ptr, a, user, privs);
 340                 user->chans.push_back(a);
 341                 return c;
 342         }
 343         else if (*user->oper)
 344         {
 345                 /* Oper allows extension up to the OPERMAXCHANS value */
 346                 if (user->chans.size() < OPERMAXCHANS)
 347                 {
 348                         ucrec* a = new ucrec();
 349                         chanrec* c = chanrec::ForceChan(Instance, Ptr, a, user, privs);
 350                         user->chans.push_back(a);
 351                         return c;
 352                 }
 353         }
 354
 355         user->WriteServ("405 %s %s :You are on too many channels",user->nick, cname);
 356
 357         if (new_channel)
 358         {
 359                 Instance->Log(DEBUG,"BLAMMO, Whacking channel.");
 360                 /* Things went seriously pear shaped, so take this away. bwahaha. */
 361                 chan_hash::iterator n = Instance->chanlist.find(cname);
 362                 if (n != Instance->chanlist.end())
 363                 {
 364                         Ptr->DelUser(user);
 365                         DELETE(Ptr);
 366                         Instance->chanlist.erase(n);
 367                         for (unsigned int index =0; index < user->chans.size(); index++)
 368                         {
 369                                 if (user->chans[index]->channel == Ptr)
 370                                 {
 371                                         user->chans[index]->channel = NULL;
 372                                         user->chans[index]->uc_modes = 0;
 373                                 }
 374                         }
 375                 }
 376         }
 377         else
 378         {
 379                 for (unsigned int index =0; index < user->chans.size(); index++)
 380                 {
 381                         if (user->chans[index]->channel == Ptr)
 382                         {
 383                                 user->chans[index]->channel = NULL;
 384                                 user->chans[index]->uc_modes = 0;
 385                         }
 386                 }
 387         }
 388         return NULL;
 389 }
 390
 391 chanrec* chanrec::ForceChan(InspIRCd* Instance, chanrec* Ptr,ucrec *a,userrec* user, const std::string &privs)
 392 {
 393         userrec* dummyuser = new userrec(Instance);
 394         std::string nick = user->nick;
 395
 396         a->uc_modes = 0;
 397         dummyuser->SetFd(FD_MAGIC_NUMBER);
 398
 399         a->channel = Ptr;
 400         Ptr->AddUser(user);
 401         user->ModChannelCount(1);
 402
 403         for (std::string::const_iterator x = privs.begin(); x != privs.end(); x++)
 404         {
 405                 const char status = *x;
 406                 ModeHandler* mh = Instance->Modes->FindPrefix(status);
 407                 if (mh)
 408                 {
 409                         Ptr->SetPrefix(user, status, mh->GetPrefixRank(), true);
 410                         /* Make sure that the mode handler knows this mode was now set */
 411                         mh->OnModeChange(dummyuser, dummyuser, Ptr, nick, true);
 412                 }
 413         }
 414
 415         delete dummyuser;
 416
 417         Ptr->WriteChannel(user,"JOIN :%s",Ptr->name);
 418
 419         /* Theyre not the first ones in here, make sure everyone else sees the modes we gave the user */
 420         std::string ms = Instance->Modes->ModeString(user, Ptr);
 421         if ((Ptr->GetUserCounter() > 1) && (ms.length()))
 422                 Ptr->WriteAllExceptSender(user, true, 0, "MODE %s +%s", Ptr->name, ms.c_str());
 423
 424         /* Major improvement by Brain - we dont need to be calculating all this pointlessly for remote users */
 425         if (IS_LOCAL(user))
 426         {
 427                 if (Ptr->topicset)
 428                 {
 429                         user->WriteServ("332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
 430                         user->WriteServ("333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
 431                 }
 432                 Ptr->UserList(user);
 433         }
 434         FOREACH_MOD_I(Instance,I_OnUserJoin,OnUserJoin(user,Ptr));
 435         FOREACH_MOD_I(Instance,I_OnPostJoin,OnPostJoin(user,Ptr));
 436         return Ptr;
 437 }
 438
 439 bool chanrec::IsBanned(userrec* user)
 440 {
 441         char mask[MAXBUF];
 442         int MOD_RESULT = 0;
 443         FOREACH_RESULT(I_OnCheckBan,OnCheckBan(user, this));
 444         if (!MOD_RESULT)
 445         {
 446                 snprintf(mask, MAXBUF, "%s!%s@%s", user->nick, user->ident, user->GetIPString());
 447                 for (BanList::iterator i = this->bans.begin(); i != this->bans.end(); i++)
 448                 {
 449                         /* This allows CIDR ban matching
 450                          *
 451                          *        Full masked host                      Full unmasked host                   IP with/without CIDR
 452                          */
 453                         if ((match(user->GetFullHost(),i->data)) || (match(user->GetFullRealHost(),i->data)) || (match(mask, i->data, true)))
 454                         {
 455                                 return true;
 456                         }
 457                 }
 458         }
 459         return false;
 460 }
 461
 462 /* chanrec::PartUser
 463  * remove a channel from a users record, and return the number of users left.
 464  * Therefore, if this function returns 0 the caller should delete the chanrec.
 465  */
 466 long chanrec::PartUser(userrec *user, const char* reason)
 467 {
 468         if (!user)
 469                 return this->GetUserCounter();
 470
 471         for (unsigned int i =0; i < user->chans.size(); i++)
 472         {
 473                 /* zap it from the channel list of the user */
 474                 if (user->chans[i]->channel == this)
 475                 {
 476                         FOREACH_MOD(I_OnUserPart,OnUserPart(user, this, reason ? reason : ""));
 477                         this->WriteChannel(user, "PART %s%s%s", this->name, reason ? " :" : "", reason ? reason : "");
 478                         user->chans[i]->uc_modes = 0;
 479                         user->chans[i]->channel = NULL;
 480                         user->ModChannelCount(-1);
 481                         this->RemoveAllPrefixes(user);
 482                         break;
 483                 }
 484         }
 485
 486         if (!this->DelUser(user)) /* if there are no users left on the channel... */
 487         {
 488                 chan_hash::iterator iter = ServerInstance->chanlist.find(this->name);
 489                 /* kill the record */
 490                 if (iter != ServerInstance->chanlist.end())
 491                 {
 492                         ServerInstance->Log(DEBUG,"del_channel: destroyed: %s", this->name);
 493                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 494                         ServerInstance->chanlist.erase(iter);
 495                 }
 496                 return 0;
 497         }
 498
 499         return this->GetUserCounter();
 500 }
 501
 502 long chanrec::ServerKickUser(userrec* user, const char* reason, bool triggerevents)
 503 {
 504         if (!user || !reason)
 505                 return this->GetUserCounter();
 506
 507         if (IS_LOCAL(user))
 508         {
 509                 if (!this->HasUser(user))
 510                 {
 511                         /* Not on channel */
 512                         return this->GetUserCounter();
 513                 }
 514         }
 515
 516         if (triggerevents)
 517         {
 518                 FOREACH_MOD(I_OnUserKick,OnUserKick(NULL,user,this,reason));
 519         }
 520
 521         for (unsigned int i =0; i < user->chans.size(); i++)
 522         {
 523                 if (user->chans[i]->channel == this)
 524                 {
 525                         this->WriteChannelWithServ(ServerInstance->Config->ServerName, "KICK %s %s :%s", this->name, user->nick, reason);
 526                         user->chans[i]->uc_modes = 0;
 527                         user->chans[i]->channel = NULL;
 528                         this->RemoveAllPrefixes(user);
 529                         break;
 530                 }
 531         }
 532
 533         if (!this->DelUser(user))
 534         {
 535                 chan_hash::iterator iter = ServerInstance->chanlist.find(this->name);
 536                 /* kill the record */
 537                 if (iter != ServerInstance->chanlist.end())
 538                 {
 539                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 540                         ServerInstance->chanlist.erase(iter);
 541                 }
 542                 return 0;
 543         }
 544
 545         return this->GetUserCounter();
 546 }
 547
 548 long chanrec::KickUser(userrec *src, userrec *user, const char* reason)
 549 {
 550         if (!src || !user || !reason)
 551                 return this->GetUserCounter();
 552
 553         if (IS_LOCAL(src))
 554         {
 555                 if (!this->HasUser(user))
 556                 {
 557                         src->WriteServ("441 %s %s %s :They are not on that channel",src->nick, user->nick, this->name);
 558                         return this->GetUserCounter();
 559                 }
 560                 if ((ServerInstance->ULine(user->server)) && (!ServerInstance->ULine(src->server)))
 561                 {
 562                         src->WriteServ("482 %s %s :Only a u-line may kick a u-line from a channel.",src->nick, this->name);
 563                         return this->GetUserCounter();
 564                 }
 565                 int MOD_RESULT = 0;
 566
 567                 if (!ServerInstance->ULine(src->server))
 568                 {
 569                         MOD_RESULT = 0;
 570                         FOREACH_RESULT(I_OnUserPreKick,OnUserPreKick(src,user,this,reason));
 571                         if (MOD_RESULT == 1)
 572                                 return this->GetUserCounter();
 573                 }
 574                 /* Set to -1 by OnUserPreKick if explicit allow was set */
 575                 if (MOD_RESULT != -1)
 576                 {
 577                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(src,user,this,AC_KICK));
 578                         if ((MOD_RESULT == ACR_DENY) && (!ServerInstance->ULine(src->server)))
 579                                 return this->GetUserCounter();
 580
 581                         if ((MOD_RESULT == ACR_DEFAULT) || (!ServerInstance->ULine(src->server)))
 582                         {
 583                                 int them = this->GetStatus(src);
 584                                 int us = this->GetStatus(user);
 585                                 if ((them < STATUS_HOP) || (them < us))
 586                                 {
 587                                         src->WriteServ("482 %s %s :You must be a channel %soperator",src->nick, this->name, them == STATUS_HOP ? "" : "half-");
 588                                         return this->GetUserCounter();
 589                                 }
 590                         }
 591                 }
 592         }
 593
 594         FOREACH_MOD(I_OnUserKick,OnUserKick(src,user,this,reason));
 595
 596         for (UserChanList::const_iterator i = user->chans.begin(); i != user->chans.end(); i++)
 597         {
 598                 /* zap it from the channel list of the user */
 599                 if ((*i)->channel == this)
 600                 {
 601                         this->WriteChannel(src, "KICK %s %s :%s", this->name, user->nick, reason);
 602                         (*i)->uc_modes = 0;
 603                         (*i)->channel = NULL;
 604                         this->RemoveAllPrefixes(user);
 605                         break;
 606                 }
 607         }
 608
 609         if (!this->DelUser(user))
 610         /* if there are no users left on the channel */
 611         {
 612                 chan_hash::iterator iter = ServerInstance->chanlist.find(this->name);
 613
 614                 /* kill the record */
 615                 if (iter != ServerInstance->chanlist.end())
 616                 {
 617                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 618                         ServerInstance->chanlist.erase(iter);
 619                 }
 620                 return 0;
 621         }
 622
 623         return this->GetUserCounter();
 624 }
 625
 626 void chanrec::WriteChannel(userrec* user, char* text, ...)
 627 {
 628         char textbuffer[MAXBUF];
 629         va_list argsPtr;
 630
 631         if (!user || !text)
 632                 return;
 633
 634         va_start(argsPtr, text);
 635         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 636         va_end(argsPtr);
 637
 638         this->WriteChannel(user, std::string(textbuffer));
 639 }
 640
 641 void chanrec::WriteChannel(userrec* user, const std::string &text)
 642 {
 643         CUList *ulist = this->GetUsers();
 644
 645         if (!user)
 646                 return;
 647
 648         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 649         {
 650                 if (IS_LOCAL(i->second))
 651                         user->WriteTo(i->second,text);
 652         }
 653 }
 654
 655 void chanrec::WriteChannelWithServ(const char* ServName, const char* text, ...)
 656 {
 657         char textbuffer[MAXBUF];
 658         va_list argsPtr;
 659
 660         if (!text)
 661                 return;
 662
 663         va_start(argsPtr, text);
 664         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 665         va_end(argsPtr);
 666
 667         this->WriteChannelWithServ(ServName, std::string(textbuffer));
 668 }
 669
 670 void chanrec::WriteChannelWithServ(const char* ServName, const std::string &text)
 671 {
 672         CUList *ulist = this->GetUsers();
 673
 674         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 675         {
 676                 if (IS_LOCAL(i->second))
 677                         i->second->WriteServ(text);
 678         }
 679 }
 680
 681 /* write formatted text from a source user to all users on a channel except
 682  * for the sender (for privmsg etc) */
 683 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, char* text, ...)
 684 {
 685         char textbuffer[MAXBUF];
 686         va_list argsPtr;
 687
 688         if (!text)
 689                 return;
 690
 691         va_start(argsPtr, text);
 692         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 693         va_end(argsPtr);
 694
 695         this->WriteAllExceptSender(user, serversource, status, std::string(textbuffer));
 696 }
 697
 698 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, char* text, ...)
 699 {
 700         char textbuffer[MAXBUF];
 701         va_list argsPtr;
 702
 703         if (!text)
 704                 return;
 705
 706         va_start(argsPtr, text);
 707         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 708         va_end(argsPtr);
 709
 710         this->WriteAllExcept(user, serversource, status, except_list, std::string(textbuffer));
 711 }
 712
 713 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, const std::string &text)
 714 {
 715         CUList *ulist;
 716
 717         switch (status)
 718         {
 719                 case '@':
 720                         ulist = this->GetOppedUsers();
 721                         break;
 722                 case '%':
 723                         ulist = this->GetHalfoppedUsers();
 724                         break;
 725                 case '+':
 726                         ulist = this->GetVoicedUsers();
 727                         break;
 728                 default:
 729                         ulist = this->GetUsers();
 730                         break;
 731         }
 732
 733         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 734         {
 735                 if ((IS_LOCAL(i->second)) && (except_list.find(i->second) == except_list.end()))
 736                 {
 737                         if (serversource)
 738                                 i->second->WriteServ(text);
 739                         else
 740                                 i->second->WriteFrom(user,text);
 741                 }
 742         }
 743 }
 744
 745 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, const std::string& text)
 746 {
 747         CUList except_list;
 748         except_list[user] = user;
 749         this->WriteAllExcept(user, serversource, status, except_list, std::string(text));
 750 }
 751
 752 /*
 753  * return a count of the users on a specific channel accounting for
 754  * invisible users who won't increase the count. e.g. for /LIST
 755  */
 756 int chanrec::CountInvisible()
 757 {
 758         int count = 0;
 759         CUList *ulist= this->GetUsers();
 760         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 761         {
 762                 if (!(i->second->modes[UM_INVISIBLE]))
 763                         count++;
 764         }
 765
 766         return count;
 767 }
 768
 769 char* chanrec::ChanModes(bool showkey)
 770 {
 771         static char scratch[MAXBUF];
 772         static char sparam[MAXBUF];
 773         char* offset = scratch;
 774         std::string extparam = "";
 775
 776         *scratch = '\0';
 777         *sparam = '\0';
 778
 779         /* This was still iterating up to 190, chanrec::modes is only 64 elements -- Om */
 780         for(int n = 0; n < 64; n++)
 781         {
 782                 if(this->modes[n])
 783                 {
 784                         *offset++ = n + 65;
 785                         extparam = "";
 786                         switch (n)
 787                         {
 788                                 case CM_KEY:
 789                                         extparam = (showkey ? this->key : "<key>");
 790                                 break;
 791                                 case CM_LIMIT:
 792                                         extparam = ConvToStr(this->limit);
 793                                 break;
 794                                 case CM_NOEXTERNAL:
 795                                 case CM_TOPICLOCK:
 796                                 case CM_INVITEONLY:
 797                                 case CM_MODERATED:
 798                                 case CM_SECRET:
 799                                 case CM_PRIVATE:
 800                                         /* We know these have no parameters */
 801                                 break;
 802                                 default:
 803                                         extparam = this->GetModeParameter(n + 65);
 804                                 break;
 805                         }
 806                         if (extparam != "")
 807                         {
 808                                 charlcat(sparam,' ',MAXBUF);
 809                                 strlcat(sparam,extparam.c_str(),MAXBUF);
 810                         }
 811                 }
 812         }
 813
 814         /* Null terminate scratch */
 815         *offset = '\0';
 816         strlcat(scratch,sparam,MAXBUF);
 817         return scratch;
 818 }
 819
 820 /* compile a userlist of a channel into a string, each nick seperated by
 821  * spaces and op, voice etc status shown as @ and +, and send it to 'user'
 822  */
 823 void chanrec::UserList(userrec *user)
 824 {
 825         char list[MAXBUF];
 826         size_t dlen, curlen;
 827         int MOD_RESULT = 0;
 828
 829         if (!IS_LOCAL(user))
 830                 return;
 831
 832         FOREACH_RESULT(I_OnUserList,OnUserList(user, this));
 833         ServerInstance->Log(DEBUG,"MOD_RESULT for UserList = %d",MOD_RESULT);
 834         if (MOD_RESULT == 1)
 835                 return;
 836
 837         ServerInstance->Log(DEBUG,"Using builtin NAMES list generation");
 838
 839         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 840
 841         int numusers = 0;
 842         char* ptr = list + dlen;
 843
 844         CUList *ulist= this->GetUsers();
 845
 846         /* Improvement by Brain - this doesnt change in value, so why was it inside
 847          * the loop?
 848          */
 849         bool has_user = this->HasUser(user);
 850
 851         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 852         {
 853                 if ((!has_user) && (i->second->modes[UM_INVISIBLE]))
 854                 {
 855                         /*
 856                          * user is +i, and source not on the channel, does not show
 857                          * nick in NAMES list
 858                          */
 859                         continue;
 860                 }
 861
 862                 size_t ptrlen = snprintf(ptr, MAXBUF, "%s%s ", this->GetPrefixChar(i->second), i->second->nick);
 863
 864                 curlen += ptrlen;
 865                 ptr += ptrlen;
 866
 867                 numusers++;
 868
 869                 if (curlen > (480-NICKMAX))
 870                 {
 871                         /* list overflowed into multiple numerics */
 872                         user->WriteServ(std::string(list));
 873
 874                         /* reset our lengths */
 875                         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 876                         ptr = list + dlen;
 877
 878                         ptrlen = 0;
 879                         numusers = 0;
 880                 }
 881         }
 882
 883         /* if whats left in the list isnt empty, send it */
 884         if (numusers)
 885         {
 886                 user->WriteServ(std::string(list));
 887         }
 888
 889         user->WriteServ("366 %s %s :End of /NAMES list.", user->nick, this->name);
 890 }
 891
 892 long chanrec::GetMaxBans()
 893 {
 894         for (std::map<std::string,int>::iterator n = ServerInstance->Config->maxbans.begin(); n != ServerInstance->Config->maxbans.end(); n++)
 895         {
 896                 if (match(this->name,n->first.c_str()))
 897                 {
 898                         return n->second;
 899                 }
 900         }
 901         return 64;
 902 }
 903
 904
 905 /* returns the status character for a given user on a channel, e.g. @ for op,
 906  * % for halfop etc. If the user has several modes set, the highest mode
 907  * the user has must be returned.
 908  */
 909 const char* chanrec::GetPrefixChar(userrec *user)
 910 {
 911         static char pf[2] = {0, 0};
 912
 913         prefixlist::iterator n = prefixes.find(user);
 914         if (n != prefixes.end())
 915         {
 916                 if (n->second.size())
 917                 {
 918                         /* If the user has any prefixes, their highest prefix
 919                          * will always be at the head of the list, as the list is
 920                          * sorted in rank order highest first (see SetPrefix()
 921                          * for reasons why)
 922                          */
 923                         *pf = n->second.begin()->first;
 924                         return pf;
 925                 }
 926         }
 927
 928         *pf = 0;
 929         return pf;
 930 }
 931
 932 const char* chanrec::GetAllPrefixChars(userrec* user)
 933 {
 934         static char prefix[MAXBUF];
 935         int ctr = 0;
 936         *prefix = 0;
 937
 938         prefixlist::iterator n = prefixes.find(user);
 939         if (n != prefixes.end())
 940         {
 941                 for (std::vector<prefixtype>::iterator x = n->second.begin(); x != n->second.end(); x++)
 942                 {
 943                         prefix[ctr++] = x->first;
 944                 }
 945         }
 946
 947         prefix[ctr] = 0;
 948
 949         return prefix;
 950 }
 951
 952 unsigned int chanrec::GetPrefixValue(userrec* user)
 953 {
 954         prefixlist::iterator n = prefixes.find(user);
 955         if (n != prefixes.end())
 956         {
 957                 if (n->second.size())
 958                         return n->second.begin()->second;
 959         }
 960         return 0;
 961 }
 962
 963
 964 int chanrec::GetStatusFlags(userrec *user)
 965 {
 966         for (std::vector<ucrec*>::const_iterator i = user->chans.begin(); i != user->chans.end(); i++)
 967         {
 968                 if ((*i)->channel == this)
 969                 {
 970                         return (*i)->uc_modes;
 971                 }
 972         }
 973         return 0;
 974 }
 975
 976
 977 int chanrec::GetStatus(userrec *user)
 978 {
 979         if (ServerInstance->ULine(user->server))
 980                 return STATUS_OP;
 981
 982         for (std::vector<ucrec*>::const_iterator i = user->chans.begin(); i != user->chans.end(); i++)
 983         {
 984                 if ((*i)->channel == this)
 985                 {
 986                         if (((*i)->uc_modes & UCMODE_OP) > 0)
 987                         {
 988                                 return STATUS_OP;
 989                         }
 990                         if (((*i)->uc_modes & UCMODE_HOP) > 0)
 991                         {
 992                                 return STATUS_HOP;
 993                         }
 994                         if (((*i)->uc_modes & UCMODE_VOICE) > 0)
 995                         {
 996                                 return STATUS_VOICE;
 997                         }
 998                         return STATUS_NORMAL;
 999                 }
1000         }
1001         return STATUS_NORMAL;
1002 }
1003
1004 void chanrec::SetPrefix(userrec* user, char prefix, unsigned int prefix_value, bool adding)
1005 {
1006         prefixlist::iterator n = prefixes.find(user);
1007         prefixtype pfx = std::make_pair(prefix,prefix_value);
1008         if (adding)
1009         {
1010                 if (n != prefixes.end())
1011                 {
1012                         if (std::find(n->second.begin(), n->second.end(), pfx) == n->second.end())
1013                         {
1014                                 n->second.push_back(pfx);
1015                                 /* We must keep prefixes in rank order, largest first.
1016                                  * This is for two reasons, firstly because x-chat *ass-u-me's* this
1017                                  * state, and secondly it turns out to be a benefit to us later.
1018                                  * See above in GetPrefix().
1019                                  */
1020                                 std::sort(n->second.begin(), n->second.end(), ModeParser::PrefixComparison);
1021                         }
1022                 }
1023                 else
1024                 {
1025                         pfxcontainer one;
1026                         one.push_back(pfx);
1027                         prefixes.insert(std::make_pair<userrec*,pfxcontainer>(user, one));
1028                 }
1029         }
1030         else
1031         {
1032                 if (n != prefixes.end())
1033                 {
1034                         pfxcontainer::iterator x = std::find(n->second.begin(), n->second.end(), pfx);
1035                         if (x != n->second.end())
1036                                 n->second.erase(x);
1037                 }
1038         }
1039         ServerInstance->Log(DEBUG,"Added prefix %c to %s for %s, prefixlist size is now %d", prefix, this->name, user->nick, prefixes.size());
1040 }
1041
1042 void chanrec::RemoveAllPrefixes(userrec* user)
1043 {
1044         prefixlist::iterator n = prefixes.find(user);
1045         if (n != prefixes.end())
1046         {
1047                 ServerInstance->Log(DEBUG,"Removed prefixes from %s for %s, prefixlist size is now %d", this->name, user->nick, prefixes.size());
1048                 prefixes.erase(n);
1049         }
1050 }
1051