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
 180         for (std::string::iterator n = modeseq.begin(); n != modeseq.end(); ++n)
 181         {
 182                 ModeHandler* mode = ServerInstance->Modes->FindMode(*n, MODETYPE_CHANNEL);
 183                 if (mode)
 184                 {
 185                         this->SetMode(*n, true);
 186                         if (mode->GetNumParams(true))
 187                                 this->SetModeParam(*n, list.GetToken().c_str(), true);
 188                 }
 189         }
 190 }
 191
 192 /*
 193  * add a channel to a user, creating the record for it if needed and linking
 194  * it to the user record
 195  */
 196 chanrec* chanrec::JoinUser(InspIRCd* Instance, userrec *user, const char* cn, bool override, const char* key, time_t TS)
 197 {
 198         if (!user || !cn)
 199                 return NULL;
 200
 201         bool new_channel = false;
 202         char cname[MAXBUF];
 203         int MOD_RESULT = 0;
 204         strlcpy(cname,cn,CHANMAX);
 205
 206         std::string privs;
 207
 208         chanrec* Ptr = Instance->FindChan(cname);
 209
 210         if (!Ptr)
 211         {
 212                 if ((!IS_LOCAL(user)) && (!TS))
 213                         Instance->Log(DEBUG,"*** BUG *** chanrec::JoinUser called for REMOTE user '%s' on channel '%s' but no TS given!", user->nick, cn);
 214
 215                 privs = "@";
 216
 217                 if (IS_LOCAL(user) && override == false)
 218                 {
 219                         MOD_RESULT = 0;
 220                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,NULL,cname,privs));
 221                         if (MOD_RESULT == 1)
 222                                 return NULL;
 223                 }
 224
 225                 /* create a new one */
 226                 Ptr = new chanrec(Instance);
 227                 (*(Instance->chanlist))[cname] = Ptr;
 228
 229                 strlcpy(Ptr->name, cname,CHANMAX);
 230
 231                 /* As spotted by jilles, dont bother to set this on remote users */
 232                 if (IS_LOCAL(user))
 233                         Ptr->SetDefaultModes();
 234
 235                 Ptr->created = TS ? TS : Instance->Time();
 236                 Ptr->age = Ptr->created;
 237                 *Ptr->topic = 0;
 238                 *Ptr->setby = 0;
 239                 Ptr->topicset = 0;
 240                 new_channel = true;
 241         }
 242         else
 243         {
 244                 /* Already on the channel */
 245                 if (Ptr->HasUser(user))
 246                         return NULL;
 247
 248                 /*
 249                  * remote users are allowed us to bypass channel modes
 250                  * and bans (used by servers)
 251                  */
 252                 if (IS_LOCAL(user) && override == false)
 253                 {
 254                         MOD_RESULT = 0;
 255                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,Ptr,cname,privs));
 256                         if (MOD_RESULT == 1)
 257                         {
 258                                 return NULL;
 259                         }
 260                         else if (MOD_RESULT == 0)
 261                         {
 262                                 if (*Ptr->key)
 263                                 {
 264                                         MOD_RESULT = 0;
 265                                         FOREACH_RESULT_I(Instance,I_OnCheckKey,OnCheckKey(user, Ptr, key ? key : ""));
 266                                         if (!MOD_RESULT)
 267                                         {
 268                                                 if ((!key) || strcmp(key,Ptr->key))
 269                                                 {
 270                                                         user->WriteServ("475 %s %s :Cannot join channel (Incorrect channel key)",user->nick, Ptr->name);
 271                                                         return NULL;
 272                                                 }
 273                                         }
 274                                 }
 275                                 if (Ptr->modes[CM_INVITEONLY])
 276                                 {
 277                                         MOD_RESULT = 0;
 278                                         FOREACH_RESULT_I(Instance,I_OnCheckInvite,OnCheckInvite(user, Ptr));
 279                                         if (!MOD_RESULT)
 280                                         {
 281                                                 if (user->IsInvited(Ptr->name))
 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(Ptr->name);
 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         }
 318
 319         /* NOTE: If the user is an oper here, we can extend their user->chans by up to
 320          * OperMaxchans. For remote users which are not bound by the channel limits,
 321          * we can extend infinitely. Otherwise, nope, youre restricted to MaxChans.
 322          */
 323         if (!IS_LOCAL(user) || override == true)
 324         {
 325                 return chanrec::ForceChan(Instance, Ptr, user, privs);
 326         }
 327         else if (IS_OPER(user))
 328         {
 329                 /* Oper allows extension up to the OperMaxchans value */
 330                 if (user->chans.size() < Instance->Config->OperMaxChans)
 331                 {
 332                         return chanrec::ForceChan(Instance, Ptr, user, privs);
 333                 }
 334         }
 335         else if (user->chans.size() < Instance->Config->MaxChans)
 336         {
 337                 return chanrec::ForceChan(Instance, Ptr, user, privs);
 338         }
 339
 340
 341         user->WriteServ("405 %s %s :You are on too many channels",user->nick, cname);
 342
 343         if (new_channel)
 344         {
 345                 /* Things went seriously pear shaped, so take this away. bwahaha. */
 346                 chan_hash::iterator n = Instance->chanlist->find(cname);
 347                 if (n != Instance->chanlist->end())
 348                 {
 349                         Ptr->DelUser(user);
 350                         DELETE(Ptr);
 351                         Instance->chanlist->erase(n);
 352                 }
 353         }
 354
 355         return NULL;
 356 }
 357
 358 chanrec* chanrec::ForceChan(InspIRCd* Instance, chanrec* Ptr, userrec* user, const std::string &privs)
 359 {
 360         userrec* dummyuser = new userrec(Instance);
 361         std::string nick = user->nick;
 362         bool silent = false;
 363
 364         dummyuser->SetFd(FD_MAGIC_NUMBER);
 365         Ptr->AddUser(user);
 366
 367         /* Just in case they have no permissions */
 368         user->chans[Ptr] = 0;
 369
 370         for (std::string::const_iterator x = privs.begin(); x != privs.end(); x++)
 371         {
 372                 const char status = *x;
 373                 ModeHandler* mh = Instance->Modes->FindPrefix(status);
 374                 if (mh)
 375                 {
 376                         Ptr->SetPrefix(user, status, mh->GetPrefixRank(), true);
 377                         /* Make sure that the mode handler knows this mode was now set */
 378                         mh->OnModeChange(dummyuser, dummyuser, Ptr, nick, true);
 379
 380                         switch (mh->GetPrefix())
 381                         {
 382                                 /* These logic ops are SAFE IN THIS CASE
 383                                  * because if the entry doesnt exist,
 384                                  * addressing operator[] creates it.
 385                                  * If they do exist, it points to it.
 386                                  * At all other times where we dont want
 387                                  * to create an item if it doesnt exist, we
 388                                  * must stick to ::find().
 389                                  */
 390                                 case '@':
 391                                         user->chans[Ptr] |= UCMODE_OP;
 392                                 break;
 393                                 case '%':
 394                                         user->chans[Ptr] |= UCMODE_HOP;
 395                                 break;
 396                                 case '+':
 397                                         user->chans[Ptr] |= UCMODE_VOICE;
 398                                 break;
 399                         }
 400                 }
 401         }
 402
 403         delete dummyuser;
 404
 405         FOREACH_MOD_I(Instance,I_OnUserJoin,OnUserJoin(user, Ptr, silent));
 406
 407         if (!silent)
 408                 Ptr->WriteChannel(user,"JOIN :%s",Ptr->name);
 409
 410         /* Theyre not the first ones in here, make sure everyone else sees the modes we gave the user */
 411         std::string ms = Instance->Modes->ModeString(user, Ptr);
 412         if ((Ptr->GetUserCounter() > 1) && (ms.length()))
 413                 Ptr->WriteAllExceptSender(user, true, 0, "MODE %s +%s", Ptr->name, ms.c_str());
 414
 415         /* Major improvement by Brain - we dont need to be calculating all this pointlessly for remote users */
 416         if (IS_LOCAL(user))
 417         {
 418                 if (Ptr->topicset)
 419                 {
 420                         user->WriteServ("332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
 421                         user->WriteServ("333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
 422                 }
 423                 Ptr->UserList(user);
 424         }
 425         FOREACH_MOD_I(Instance,I_OnPostJoin,OnPostJoin(user, Ptr));
 426         return Ptr;
 427 }
 428
 429 bool chanrec::IsBanned(userrec* user)
 430 {
 431         char mask[MAXBUF];
 432         int MOD_RESULT = 0;
 433         FOREACH_RESULT(I_OnCheckBan,OnCheckBan(user, this));
 434         if (!MOD_RESULT)
 435         {
 436                 snprintf(mask, MAXBUF, "%s!%s@%s", user->nick, user->ident, user->GetIPString());
 437                 for (BanList::iterator i = this->bans.begin(); i != this->bans.end(); i++)
 438                 {
 439                         /* This allows CIDR ban matching
 440                          *
 441                          *        Full masked host                      Full unmasked host                   IP with/without CIDR
 442                          */
 443                         if ((match(user->GetFullHost(),i->data)) || (match(user->GetFullRealHost(),i->data)) || (match(mask, i->data, true)))
 444                         {
 445                                 return true;
 446                         }
 447                 }
 448         }
 449         return false;
 450 }
 451
 452 /* chanrec::PartUser
 453  * remove a channel from a users record, and return the number of users left.
 454  * Therefore, if this function returns 0 the caller should delete the chanrec.
 455  */
 456 long chanrec::PartUser(userrec *user, const char* reason)
 457 {
 458         bool silent = false;
 459
 460         if (!user)
 461                 return this->GetUserCounter();
 462
 463         UCListIter i = user->chans.find(this);
 464         if (i != user->chans.end())
 465         {
 466                 FOREACH_MOD(I_OnUserPart,OnUserPart(user, this, reason ? reason : "", silent));
 467
 468                 if (!silent)
 469                         this->WriteChannel(user, "PART %s%s%s", this->name, reason ? " :" : "", reason ? reason : "");
 470
 471                 user->chans.erase(i);
 472                 this->RemoveAllPrefixes(user);
 473         }
 474
 475         if (!this->DelUser(user)) /* if there are no users left on the channel... */
 476         {
 477                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 478                 /* kill the record */
 479                 if (iter != ServerInstance->chanlist->end())
 480                 {
 481                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 482                         ServerInstance->chanlist->erase(iter);
 483                 }
 484                 return 0;
 485         }
 486
 487         return this->GetUserCounter();
 488 }
 489
 490 long chanrec::ServerKickUser(userrec* user, const char* reason, bool triggerevents)
 491 {
 492         bool silent = false;
 493
 494         if (!user || !reason)
 495                 return this->GetUserCounter();
 496
 497         if (IS_LOCAL(user))
 498         {
 499                 if (!this->HasUser(user))
 500                 {
 501                         /* Not on channel */
 502                         return this->GetUserCounter();
 503                 }
 504         }
 505
 506         if (triggerevents)
 507         {
 508                 FOREACH_MOD(I_OnUserKick,OnUserKick(NULL, user, this, reason, silent));
 509         }
 510
 511         UCListIter i = user->chans.find(this);
 512         if (i != user->chans.end())
 513         {
 514                 if (!silent)
 515                         this->WriteChannelWithServ(ServerInstance->Config->ServerName, "KICK %s %s :%s", this->name, user->nick, reason);
 516
 517                 user->chans.erase(i);
 518                 this->RemoveAllPrefixes(user);
 519         }
 520
 521         if (!this->DelUser(user))
 522         {
 523                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 524                 /* kill the record */
 525                 if (iter != ServerInstance->chanlist->end())
 526                 {
 527                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 528                         ServerInstance->chanlist->erase(iter);
 529                 }
 530                 return 0;
 531         }
 532
 533         return this->GetUserCounter();
 534 }
 535
 536 long chanrec::KickUser(userrec *src, userrec *user, const char* reason)
 537 {
 538         bool silent = false;
 539
 540         if (!src || !user || !reason)
 541                 return this->GetUserCounter();
 542
 543         if (IS_LOCAL(src))
 544         {
 545                 if (!this->HasUser(user))
 546                 {
 547                         src->WriteServ("441 %s %s %s :They are not on that channel",src->nick, user->nick, this->name);
 548                         return this->GetUserCounter();
 549                 }
 550                 if ((ServerInstance->ULine(user->server)) && (!ServerInstance->ULine(src->server)))
 551                 {
 552                         src->WriteServ("482 %s %s :Only a u-line may kick a u-line from a channel.",src->nick, this->name);
 553                         return this->GetUserCounter();
 554                 }
 555                 int MOD_RESULT = 0;
 556
 557                 if (!ServerInstance->ULine(src->server))
 558                 {
 559                         MOD_RESULT = 0;
 560                         FOREACH_RESULT(I_OnUserPreKick,OnUserPreKick(src,user,this,reason));
 561                         if (MOD_RESULT == 1)
 562                                 return this->GetUserCounter();
 563                 }
 564                 /* Set to -1 by OnUserPreKick if explicit allow was set */
 565                 if (MOD_RESULT != -1)
 566                 {
 567                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(src,user,this,AC_KICK));
 568                         if ((MOD_RESULT == ACR_DENY) && (!ServerInstance->ULine(src->server)))
 569                                 return this->GetUserCounter();
 570
 571                         if ((MOD_RESULT == ACR_DEFAULT) || (!ServerInstance->ULine(src->server)))
 572                         {
 573                                 int them = this->GetStatus(src);
 574                                 int us = this->GetStatus(user);
 575                                 if ((them < STATUS_HOP) || (them < us))
 576                                 {
 577                                         src->WriteServ("482 %s %s :You must be a channel %soperator",src->nick, this->name, them == STATUS_HOP ? "" : "half-");
 578                                         return this->GetUserCounter();
 579                                 }
 580                         }
 581                 }
 582         }
 583
 584         FOREACH_MOD(I_OnUserKick,OnUserKick(src, user, this, reason, silent));
 585
 586         UCListIter i = user->chans.find(this);
 587         if (i != user->chans.end())
 588         {
 589                 /* zap it from the channel list of the user */
 590                 if (!silent)
 591                         this->WriteChannel(src, "KICK %s %s :%s", this->name, user->nick, reason);
 592
 593                 user->chans.erase(i);
 594                 this->RemoveAllPrefixes(user);
 595         }
 596
 597         if (!this->DelUser(user))
 598         /* if there are no users left on the channel */
 599         {
 600                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 601
 602                 /* kill the record */
 603                 if (iter != ServerInstance->chanlist->end())
 604                 {
 605                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 606                         ServerInstance->chanlist->erase(iter);
 607                 }
 608                 return 0;
 609         }
 610
 611         return this->GetUserCounter();
 612 }
 613
 614 void chanrec::WriteChannel(userrec* user, char* text, ...)
 615 {
 616         char textbuffer[MAXBUF];
 617         va_list argsPtr;
 618
 619         if (!user || !text)
 620                 return;
 621
 622         va_start(argsPtr, text);
 623         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 624         va_end(argsPtr);
 625
 626         this->WriteChannel(user, std::string(textbuffer));
 627 }
 628
 629 void chanrec::WriteChannel(userrec* user, const std::string &text)
 630 {
 631         CUList *ulist = this->GetUsers();
 632         char tb[MAXBUF];
 633
 634         if (!user)
 635                 return;
 636
 637         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 638         std::string out = tb;
 639
 640         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 641         {
 642                 if (IS_LOCAL(i->first))
 643                         i->first->Write(out);
 644         }
 645 }
 646
 647 void chanrec::WriteChannelWithServ(const char* ServName, const char* text, ...)
 648 {
 649         char textbuffer[MAXBUF];
 650         va_list argsPtr;
 651
 652         if (!text)
 653                 return;
 654
 655         va_start(argsPtr, text);
 656         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 657         va_end(argsPtr);
 658
 659         this->WriteChannelWithServ(ServName, std::string(textbuffer));
 660 }
 661
 662 void chanrec::WriteChannelWithServ(const char* ServName, const std::string &text)
 663 {
 664         CUList *ulist = this->GetUsers();
 665         char tb[MAXBUF];
 666
 667         snprintf(tb,MAXBUF,":%s %s",ServName ? ServName : ServerInstance->Config->ServerName, text.c_str());
 668         std::string out = tb;
 669
 670         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 671         {
 672                 if (IS_LOCAL(i->first))
 673                         i->first->Write(out);
 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::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, char* text, ...)
 695 {
 696         char textbuffer[MAXBUF];
 697         va_list argsPtr;
 698
 699         if (!text)
 700                 return;
 701
 702         va_start(argsPtr, text);
 703         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 704         va_end(argsPtr);
 705
 706         this->WriteAllExcept(user, serversource, status, except_list, std::string(textbuffer));
 707 }
 708
 709 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, const std::string &text)
 710 {
 711         CUList *ulist;
 712         char tb[MAXBUF];
 713
 714         switch (status)
 715         {
 716                 case '@':
 717                         ulist = this->GetOppedUsers();
 718                         break;
 719                 case '%':
 720                         ulist = this->GetHalfoppedUsers();
 721                         break;
 722                 case '+':
 723                         ulist = this->GetVoicedUsers();
 724                         break;
 725                 default:
 726                         ulist = this->GetUsers();
 727                         break;
 728         }
 729
 730         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 731         std::string out = tb;
 732
 733         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 734         {
 735                 if ((IS_LOCAL(i->first)) && (except_list.find(i->first) == except_list.end()))
 736                 {
 737                         if (serversource)
 738                                 i->first->WriteServ(text);
 739                         else
 740                                 i->first->Write(out);
 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->nick;
 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->first->IsModeSet('i')))
 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, CUList *ulist)
 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, ulist));
 833         if (MOD_RESULT == 1)
 834                 return;
 835
 836         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 837
 838         int numusers = 0;
 839         char* ptr = list + dlen;
 840
 841         if (!ulist)
 842                 ulist = this->GetUsers();
 843
 844         /* Improvement by Brain - this doesnt change in value, so why was it inside
 845          * the loop?
 846          */
 847         bool has_user = this->HasUser(user);
 848
 849         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 850         {
 851                 if ((!has_user) && (i->first->modes[UM_INVISIBLE]))
 852                 {
 853                         /*
 854                          * user is +i, and source not on the channel, does not show
 855                          * nick in NAMES list
 856                          */
 857                         continue;
 858                 }
 859
 860                 if (i->first->Visibility && !i->first->Visibility->VisibleTo(user))
 861                         continue;
 862
 863                 size_t ptrlen = snprintf(ptr, MAXBUF, "%s%s ", this->GetPrefixChar(i->first), i->second.c_str());
 864                 /* OnUserList can change this - reset it back to normal */
 865                 i->second = i->first->nick;
 866
 867                 curlen += ptrlen;
 868                 ptr += ptrlen;
 869
 870                 numusers++;
 871
 872                 if (curlen > (480-NICKMAX))
 873                 {
 874                         /* list overflowed into multiple numerics */
 875                         user->WriteServ(std::string(list));
 876
 877                         /* reset our lengths */
 878                         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 879                         ptr = list + dlen;
 880
 881                         ptrlen = 0;
 882                         numusers = 0;
 883                 }
 884         }
 885
 886         /* if whats left in the list isnt empty, send it */
 887         if (numusers)
 888         {
 889                 user->WriteServ(std::string(list));
 890         }
 891
 892         user->WriteServ("366 %s %s :End of /NAMES list.", user->nick, this->name);
 893 }
 894
 895 long chanrec::GetMaxBans()
 896 {
 897         /* Return the cached value if there is one */
 898         if (this->maxbans)
 899                 return this->maxbans;
 900
 901         /* If there isnt one, we have to do some O(n) hax to find it the first time. (ick) */
 902         for (std::map<std::string,int>::iterator n = ServerInstance->Config->maxbans.begin(); n != ServerInstance->Config->maxbans.end(); n++)
 903         {
 904                 if (match(this->name,n->first.c_str()))
 905                 {
 906                         this->maxbans = n->second;
 907                         return n->second;
 908                 }
 909         }
 910
 911         /* Screw it, just return the default of 64 */
 912         this->maxbans = 64;
 913         return this->maxbans;
 914 }
 915
 916 void chanrec::ResetMaxBans()
 917 {
 918         this->maxbans = 0;
 919 }
 920
 921 /* returns the status character for a given user on a channel, e.g. @ for op,
 922  * % for halfop etc. If the user has several modes set, the highest mode
 923  * the user has must be returned.
 924  */
 925 const char* chanrec::GetPrefixChar(userrec *user)
 926 {
 927         static char pf[2] = {0, 0};
 928
 929         prefixlist::iterator n = prefixes.find(user);
 930         if (n != prefixes.end())
 931         {
 932                 if (n->second.size())
 933                 {
 934                         /* If the user has any prefixes, their highest prefix
 935                          * will always be at the head of the list, as the list is
 936                          * sorted in rank order highest first (see SetPrefix()
 937                          * for reasons why)
 938                          */
 939                         *pf = n->second.begin()->first;
 940                         return pf;
 941                 }
 942         }
 943
 944         *pf = 0;
 945         return pf;
 946 }
 947
 948 const char* chanrec::GetAllPrefixChars(userrec* user)
 949 {
 950         static char prefix[MAXBUF];
 951         int ctr = 0;
 952         *prefix = 0;
 953
 954         prefixlist::iterator n = prefixes.find(user);
 955         if (n != prefixes.end())
 956         {
 957                 for (std::vector<prefixtype>::iterator x = n->second.begin(); x != n->second.end(); x++)
 958                 {
 959                         prefix[ctr++] = x->first;
 960                 }
 961         }
 962
 963         prefix[ctr] = 0;
 964
 965         return prefix;
 966 }
 967
 968 unsigned int chanrec::GetPrefixValue(userrec* user)
 969 {
 970         prefixlist::iterator n = prefixes.find(user);
 971         if (n != prefixes.end())
 972         {
 973                 if (n->second.size())
 974                         return n->second.begin()->second;
 975         }
 976         return 0;
 977 }
 978
 979 int chanrec::GetStatusFlags(userrec *user)
 980 {
 981         UCListIter i = user->chans.find(this);
 982         if (i != user->chans.end())
 983         {
 984                 return i->second;
 985         }
 986         return 0;
 987 }
 988
 989 int chanrec::GetStatus(userrec *user)
 990 {
 991         if (ServerInstance->ULine(user->server))
 992                 return STATUS_OP;
 993
 994         UCListIter i = user->chans.find(this);
 995         if (i != user->chans.end())
 996         {
 997                 if ((i->second & UCMODE_OP) > 0)
 998                 {
 999                         return STATUS_OP;
1000                 }
1001                 if ((i->second & UCMODE_HOP) > 0)
1002                 {
1003                         return STATUS_HOP;
1004                 }
1005                 if ((i->second & UCMODE_VOICE) > 0)
1006                 {
1007                         return STATUS_VOICE;
1008                 }
1009                 return STATUS_NORMAL;
1010         }
1011         return STATUS_NORMAL;
1012 }
1013
1014 void chanrec::SetPrefix(userrec* user, char prefix, unsigned int prefix_value, bool adding)
1015 {
1016         prefixlist::iterator n = prefixes.find(user);
1017         prefixtype pfx = std::make_pair(prefix,prefix_value);
1018         if (adding)
1019         {
1020                 if (n != prefixes.end())
1021                 {
1022                         if (std::find(n->second.begin(), n->second.end(), pfx) == n->second.end())
1023                         {
1024                                 n->second.push_back(pfx);
1025                                 /* We must keep prefixes in rank order, largest first.
1026                                  * This is for two reasons, firstly because x-chat *ass-u-me's* this
1027                                  * state, and secondly it turns out to be a benefit to us later.
1028                                  * See above in GetPrefix().
1029                                  */
1030                                 std::sort(n->second.begin(), n->second.end(), ModeParser::PrefixComparison);
1031                         }
1032                 }
1033                 else
1034                 {
1035                         pfxcontainer one;
1036                         one.push_back(pfx);
1037                         prefixes.insert(std::make_pair<userrec*,pfxcontainer>(user, one));
1038                 }
1039         }
1040         else
1041         {
1042                 if (n != prefixes.end())
1043                 {
1044                         pfxcontainer::iterator x = std::find(n->second.begin(), n->second.end(), pfx);
1045                         if (x != n->second.end())
1046                                 n->second.erase(x);
1047                 }
1048         }
1049 }
1050
1051 void chanrec::RemoveAllPrefixes(userrec* user)
1052 {
1053         prefixlist::iterator n = prefixes.find(user);
1054         if (n != prefixes.end())
1055         {
1056                 prefixes.erase(n);
1057         }
1058 }
1059