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;
 179         std::string parameter;
 180
 181         list.GetToken(modeseq);
 182
 183         userrec* dummyuser = new userrec(ServerInstance);
 184         dummyuser->SetFd(FD_MAGIC_NUMBER);
 185
 186         for (std::string::iterator n = modeseq.begin(); n != modeseq.end(); ++n)
 187         {
 188                 ModeHandler* mode = ServerInstance->Modes->FindMode(*n, MODETYPE_CHANNEL);
 189                 if (mode)
 190                 {
 191                         if (mode->GetNumParams(true))
 192                                 list.GetToken(parameter);
 193                         else
 194                                 parameter.clear();
 195
 196                         mode->OnModeChange(dummyuser, dummyuser, this, parameter, true);
 197                 }
 198         }
 199
 200         delete dummyuser;
 201 }
 202
 203 /*
 204  * add a channel to a user, creating the record for it if needed and linking
 205  * it to the user record
 206  */
 207 chanrec* chanrec::JoinUser(InspIRCd* Instance, userrec *user, const char* cn, bool override, const char* key, time_t TS)
 208 {
 209         if (!user || !cn)
 210                 return NULL;
 211
 212         char cname[MAXBUF];
 213         int MOD_RESULT = 0;
 214         std::string privs;
 215         chanrec *Ptr;
 216
 217         /*
 218          * We don't restrict the number of channels that remote users or users that are override-joining may be in.
 219          * We restrict local users to MaxChans channels.
 220          * We restrict local operators to OperMaxChans channels.
 221          * This is a lot more logical than how it was formerly. -- w00t
 222          */
 223         if (IS_LOCAL(user) && !override)
 224         {
 225                 if (user->GetMaxChans())
 226                 {
 227                         if (user->chans.size() >= user->GetMaxChans())
 228                         {
 229                                 user->WriteServ("405 %s %s :You are on too many channels",user->nick, cn);
 230                                 return NULL;
 231                         }
 232                 }
 233                 else
 234                 {
 235                         if (IS_OPER(user))
 236                         {
 237                                 if (user->chans.size() >= Instance->Config->OperMaxChans)
 238                                 {
 239                                         user->WriteServ("405 %s %s :You are on too many channels",user->nick, cn);
 240                                         return NULL;
 241                                 }
 242                         }
 243                         else
 244                         {
 245                                 if (user->chans.size() >= Instance->Config->MaxChans)
 246                                 {
 247                                         user->WriteServ("405 %s %s :You are on too many channels",user->nick, cn);
 248                                         return NULL;
 249                                 }
 250                         }
 251                 }
 252         }
 253
 254         strlcpy(cname, cn, CHANMAX);
 255         Ptr = Instance->FindChan(cname);
 256
 257         if (!Ptr)
 258         {
 259                 /*
 260                  * Fix: desync bug was here, don't set @ on remote users - spanningtree handles their permissions. bug #358. -- w00t
 261                  */
 262                 if (!IS_LOCAL(user))
 263                 {
 264                         if (!TS)
 265                                 Instance->Log(DEBUG,"*** BUG *** chanrec::JoinUser called for REMOTE user '%s' on channel '%s' but no TS given!", user->nick, cn);
 266                 }
 267                 else
 268                 {
 269                         privs = "@";
 270                 }
 271
 272                 if (IS_LOCAL(user) && override == false)
 273                 {
 274                         MOD_RESULT = 0;
 275                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,NULL,cname,privs));
 276                         if (MOD_RESULT == 1)
 277                                 return NULL;
 278                 }
 279
 280                 /* create a new one */
 281                 Ptr = new chanrec(Instance);
 282                 (*(Instance->chanlist))[cname] = Ptr;
 283
 284                 strlcpy(Ptr->name, cname,CHANMAX);
 285
 286                 /* As spotted by jilles, dont bother to set this on remote users */
 287                 if (IS_LOCAL(user))
 288                         Ptr->SetDefaultModes();
 289
 290                 Ptr->created = TS ? TS : Instance->Time();
 291                 Ptr->age = Ptr->created;
 292                 *Ptr->topic = 0;
 293                 *Ptr->setby = 0;
 294                 Ptr->topicset = 0;
 295         }
 296         else
 297         {
 298                 /* Already on the channel */
 299                 if (Ptr->HasUser(user))
 300                         return NULL;
 301
 302                 /*
 303                  * remote users are allowed us to bypass channel modes
 304                  * and bans (used by servers)
 305                  */
 306                 if (IS_LOCAL(user) && override == false)
 307                 {
 308                         MOD_RESULT = 0;
 309                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,Ptr,cname,privs));
 310                         if (MOD_RESULT == 1)
 311                         {
 312                                 return NULL;
 313                         }
 314                         else if (MOD_RESULT == 0)
 315                         {
 316                                 if (*Ptr->key)
 317                                 {
 318                                         MOD_RESULT = 0;
 319                                         FOREACH_RESULT_I(Instance,I_OnCheckKey,OnCheckKey(user, Ptr, key ? key : ""));
 320                                         if (!MOD_RESULT)
 321                                         {
 322                                                 if ((!key) || strcmp(key,Ptr->key))
 323                                                 {
 324                                                         user->WriteServ("475 %s %s :Cannot join channel (Incorrect channel key)",user->nick, Ptr->name);
 325                                                         return NULL;
 326                                                 }
 327                                         }
 328                                 }
 329                                 if (Ptr->IsModeSet('i'))
 330                                 {
 331                                         MOD_RESULT = 0;
 332                                         FOREACH_RESULT_I(Instance,I_OnCheckInvite,OnCheckInvite(user, Ptr));
 333                                         if (!MOD_RESULT)
 334                                         {
 335                                                 if (!user->IsInvited(Ptr->name))
 336                                                 {
 337                                                         user->WriteServ("473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
 338                                                         return NULL;
 339                                                 }
 340                                         }
 341                                         user->RemoveInvite(Ptr->name);
 342                                 }
 343                                 if (Ptr->limit)
 344                                 {
 345                                         MOD_RESULT = 0;
 346                                         FOREACH_RESULT_I(Instance,I_OnCheckLimit,OnCheckLimit(user, Ptr));
 347                                         if (!MOD_RESULT)
 348                                         {
 349                                                 if (Ptr->GetUserCounter() >= Ptr->limit)
 350                                                 {
 351                                                         user->WriteServ("471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
 352                                                         return NULL;
 353                                                 }
 354                                         }
 355                                 }
 356                                 if (Ptr->bans.size())
 357                                 {
 358                                         if (Ptr->IsBanned(user))
 359                                         {
 360                                                 user->WriteServ("474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
 361                                                 return NULL;
 362                                         }
 363                                 }
 364                         }
 365                 }
 366         }
 367
 368         return chanrec::ForceChan(Instance, Ptr, user, privs);
 369 }
 370
 371 chanrec* chanrec::ForceChan(InspIRCd* Instance, chanrec* Ptr, userrec* user, const std::string &privs)
 372 {
 373         userrec* dummyuser = new userrec(Instance);
 374         std::string nick = user->nick;
 375         bool silent = false;
 376
 377         dummyuser->SetFd(FD_MAGIC_NUMBER);
 378         Ptr->AddUser(user);
 379
 380         /* Just in case they have no permissions */
 381         user->chans[Ptr] = 0;
 382
 383         for (std::string::const_iterator x = privs.begin(); x != privs.end(); x++)
 384         {
 385                 const char status = *x;
 386                 ModeHandler* mh = Instance->Modes->FindPrefix(status);
 387                 if (mh)
 388                 {
 389                         Ptr->SetPrefix(user, status, mh->GetPrefixRank(), true);
 390                         /* Make sure that the mode handler knows this mode was now set */
 391                         mh->OnModeChange(dummyuser, dummyuser, Ptr, nick, true);
 392
 393                         switch (mh->GetPrefix())
 394                         {
 395                                 /* These logic ops are SAFE IN THIS CASE
 396                                  * because if the entry doesnt exist,
 397                                  * addressing operator[] creates it.
 398                                  * If they do exist, it points to it.
 399                                  * At all other times where we dont want
 400                                  * to create an item if it doesnt exist, we
 401                                  * must stick to ::find().
 402                                  */
 403                                 case '@':
 404                                         user->chans[Ptr] |= UCMODE_OP;
 405                                 break;
 406                                 case '%':
 407                                         user->chans[Ptr] |= UCMODE_HOP;
 408                                 break;
 409                                 case '+':
 410                                         user->chans[Ptr] |= UCMODE_VOICE;
 411                                 break;
 412                         }
 413                 }
 414         }
 415
 416         delete dummyuser;
 417
 418         FOREACH_MOD_I(Instance,I_OnUserJoin,OnUserJoin(user, Ptr, silent));
 419
 420         if (!silent)
 421                 Ptr->WriteChannel(user,"JOIN :%s",Ptr->name);
 422
 423         /* Theyre not the first ones in here, make sure everyone else sees the modes we gave the user */
 424         std::string ms = Instance->Modes->ModeString(user, Ptr);
 425         if ((Ptr->GetUserCounter() > 1) && (ms.length()))
 426                 Ptr->WriteAllExceptSender(user, true, 0, "MODE %s +%s", Ptr->name, ms.c_str());
 427
 428         /* Major improvement by Brain - we dont need to be calculating all this pointlessly for remote users */
 429         if (IS_LOCAL(user))
 430         {
 431                 if (Ptr->topicset)
 432                 {
 433                         user->WriteServ("332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
 434                         user->WriteServ("333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
 435                 }
 436                 Ptr->UserList(user);
 437         }
 438         FOREACH_MOD_I(Instance,I_OnPostJoin,OnPostJoin(user, Ptr));
 439         return Ptr;
 440 }
 441
 442 bool chanrec::IsBanned(userrec* user)
 443 {
 444         char mask[MAXBUF];
 445         int MOD_RESULT = 0;
 446         FOREACH_RESULT(I_OnCheckBan,OnCheckBan(user, this));
 447         if (!MOD_RESULT)
 448         {
 449                 snprintf(mask, MAXBUF, "%s!%s@%s", user->nick, user->ident, user->GetIPString());
 450                 for (BanList::iterator i = this->bans.begin(); i != this->bans.end(); i++)
 451                 {
 452                         /* This allows CIDR ban matching
 453                          *
 454                          *        Full masked host                      Full unmasked host                   IP with/without CIDR
 455                          */
 456                         if ((match(user->GetFullHost(),i->data)) || (match(user->GetFullRealHost(),i->data)) || (match(mask, i->data, true)))
 457                         {
 458                                 return true;
 459                         }
 460                 }
 461         }
 462         return false;
 463 }
 464
 465 /* chanrec::PartUser
 466  * remove a channel from a users record, and return the number of users left.
 467  * Therefore, if this function returns 0 the caller should delete the chanrec.
 468  */
 469 long chanrec::PartUser(userrec *user, const char* reason)
 470 {
 471         bool silent = false;
 472
 473         if (!user)
 474                 return this->GetUserCounter();
 475
 476         UCListIter i = user->chans.find(this);
 477         if (i != user->chans.end())
 478         {
 479                 FOREACH_MOD(I_OnUserPart,OnUserPart(user, this, reason ? reason : "", silent));
 480
 481                 if (!silent)
 482                         this->WriteChannel(user, "PART %s%s%s", this->name, reason ? " :" : "", reason ? reason : "");
 483
 484                 user->chans.erase(i);
 485                 this->RemoveAllPrefixes(user);
 486         }
 487
 488         if (!this->DelUser(user)) /* if there are no users left on the channel... */
 489         {
 490                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 491                 /* kill the record */
 492                 if (iter != ServerInstance->chanlist->end())
 493                 {
 494                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 495                         ServerInstance->chanlist->erase(iter);
 496                 }
 497                 return 0;
 498         }
 499
 500         return this->GetUserCounter();
 501 }
 502
 503 long chanrec::ServerKickUser(userrec* user, const char* reason, bool triggerevents)
 504 {
 505         bool silent = false;
 506
 507         if (!user || !reason)
 508                 return this->GetUserCounter();
 509
 510         if (IS_LOCAL(user))
 511         {
 512                 if (!this->HasUser(user))
 513                 {
 514                         /* Not on channel */
 515                         return this->GetUserCounter();
 516                 }
 517         }
 518
 519         if (triggerevents)
 520         {
 521                 FOREACH_MOD(I_OnUserKick,OnUserKick(NULL, user, this, reason, silent));
 522         }
 523
 524         UCListIter i = user->chans.find(this);
 525         if (i != user->chans.end())
 526         {
 527                 if (!silent)
 528                         this->WriteChannelWithServ(ServerInstance->Config->ServerName, "KICK %s %s :%s", this->name, user->nick, reason);
 529
 530                 user->chans.erase(i);
 531                 this->RemoveAllPrefixes(user);
 532         }
 533
 534         if (!this->DelUser(user))
 535         {
 536                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 537                 /* kill the record */
 538                 if (iter != ServerInstance->chanlist->end())
 539                 {
 540                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 541                         ServerInstance->chanlist->erase(iter);
 542                 }
 543                 return 0;
 544         }
 545
 546         return this->GetUserCounter();
 547 }
 548
 549 long chanrec::KickUser(userrec *src, userrec *user, const char* reason)
 550 {
 551         bool silent = false;
 552
 553         if (!src || !user || !reason)
 554                 return this->GetUserCounter();
 555
 556         if (IS_LOCAL(src))
 557         {
 558                 if (!this->HasUser(user))
 559                 {
 560                         src->WriteServ("441 %s %s %s :They are not on that channel",src->nick, user->nick, this->name);
 561                         return this->GetUserCounter();
 562                 }
 563                 if ((ServerInstance->ULine(user->server)) && (!ServerInstance->ULine(src->server)))
 564                 {
 565                         src->WriteServ("482 %s %s :Only a u-line may kick a u-line from a channel.",src->nick, this->name);
 566                         return this->GetUserCounter();
 567                 }
 568                 int MOD_RESULT = 0;
 569
 570                 if (!ServerInstance->ULine(src->server))
 571                 {
 572                         MOD_RESULT = 0;
 573                         FOREACH_RESULT(I_OnUserPreKick,OnUserPreKick(src,user,this,reason));
 574                         if (MOD_RESULT == 1)
 575                                 return this->GetUserCounter();
 576                 }
 577                 /* Set to -1 by OnUserPreKick if explicit allow was set */
 578                 if (MOD_RESULT != -1)
 579                 {
 580                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(src,user,this,AC_KICK));
 581                         if ((MOD_RESULT == ACR_DENY) && (!ServerInstance->ULine(src->server)))
 582                                 return this->GetUserCounter();
 583
 584                         if ((MOD_RESULT == ACR_DEFAULT) || (!ServerInstance->ULine(src->server)))
 585                         {
 586                                 int them = this->GetStatus(src);
 587                                 int us = this->GetStatus(user);
 588                                 if ((them < STATUS_HOP) || (them < us))
 589                                 {
 590                                         src->WriteServ("482 %s %s :You must be a channel %soperator",src->nick, this->name, them == STATUS_HOP ? "" : "half-");
 591                                         return this->GetUserCounter();
 592                                 }
 593                         }
 594                 }
 595         }
 596
 597         FOREACH_MOD(I_OnUserKick,OnUserKick(src, user, this, reason, silent));
 598
 599         UCListIter i = user->chans.find(this);
 600         if (i != user->chans.end())
 601         {
 602                 /* zap it from the channel list of the user */
 603                 if (!silent)
 604                         this->WriteChannel(src, "KICK %s %s :%s", this->name, user->nick, reason);
 605
 606                 user->chans.erase(i);
 607                 this->RemoveAllPrefixes(user);
 608         }
 609
 610         if (!this->DelUser(user))
 611         /* if there are no users left on the channel */
 612         {
 613                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 614
 615                 /* kill the record */
 616                 if (iter != ServerInstance->chanlist->end())
 617                 {
 618                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 619                         ServerInstance->chanlist->erase(iter);
 620                 }
 621                 return 0;
 622         }
 623
 624         return this->GetUserCounter();
 625 }
 626
 627 void chanrec::WriteChannel(userrec* user, char* text, ...)
 628 {
 629         char textbuffer[MAXBUF];
 630         va_list argsPtr;
 631
 632         if (!user || !text)
 633                 return;
 634
 635         va_start(argsPtr, text);
 636         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 637         va_end(argsPtr);
 638
 639         this->WriteChannel(user, std::string(textbuffer));
 640 }
 641
 642 void chanrec::WriteChannel(userrec* user, const std::string &text)
 643 {
 644         CUList *ulist = this->GetUsers();
 645         char tb[MAXBUF];
 646
 647         if (!user)
 648                 return;
 649
 650         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 651         std::string out = tb;
 652
 653         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 654         {
 655                 if (IS_LOCAL(i->first))
 656                         i->first->Write(out);
 657         }
 658 }
 659
 660 void chanrec::WriteChannelWithServ(const char* ServName, const char* text, ...)
 661 {
 662         char textbuffer[MAXBUF];
 663         va_list argsPtr;
 664
 665         if (!text)
 666                 return;
 667
 668         va_start(argsPtr, text);
 669         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 670         va_end(argsPtr);
 671
 672         this->WriteChannelWithServ(ServName, std::string(textbuffer));
 673 }
 674
 675 void chanrec::WriteChannelWithServ(const char* ServName, const std::string &text)
 676 {
 677         CUList *ulist = this->GetUsers();
 678         char tb[MAXBUF];
 679
 680         snprintf(tb,MAXBUF,":%s %s",ServName ? ServName : ServerInstance->Config->ServerName, text.c_str());
 681         std::string out = tb;
 682
 683         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 684         {
 685                 if (IS_LOCAL(i->first))
 686                         i->first->Write(out);
 687         }
 688 }
 689
 690 /* write formatted text from a source user to all users on a channel except
 691  * for the sender (for privmsg etc) */
 692 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, char* text, ...)
 693 {
 694         char textbuffer[MAXBUF];
 695         va_list argsPtr;
 696
 697         if (!text)
 698                 return;
 699
 700         va_start(argsPtr, text);
 701         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 702         va_end(argsPtr);
 703
 704         this->WriteAllExceptSender(user, serversource, status, std::string(textbuffer));
 705 }
 706
 707 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, char* text, ...)
 708 {
 709         char textbuffer[MAXBUF];
 710         va_list argsPtr;
 711
 712         if (!text)
 713                 return;
 714
 715         va_start(argsPtr, text);
 716         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 717         va_end(argsPtr);
 718
 719         this->WriteAllExcept(user, serversource, status, except_list, std::string(textbuffer));
 720 }
 721
 722 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, const std::string &text)
 723 {
 724         CUList *ulist;
 725         char tb[MAXBUF];
 726
 727         switch (status)
 728         {
 729                 case '@':
 730                         ulist = this->GetOppedUsers();
 731                         break;
 732                 case '%':
 733                         ulist = this->GetHalfoppedUsers();
 734                         break;
 735                 case '+':
 736                         ulist = this->GetVoicedUsers();
 737                         break;
 738                 default:
 739                         ulist = this->GetUsers();
 740                         break;
 741         }
 742
 743         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 744         std::string out = tb;
 745
 746         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 747         {
 748                 if ((IS_LOCAL(i->first)) && (except_list.find(i->first) == except_list.end()))
 749                 {
 750                         if (serversource)
 751                                 i->first->WriteServ(text);
 752                         else
 753                                 i->first->Write(out);
 754                 }
 755         }
 756 }
 757
 758 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, const std::string& text)
 759 {
 760         CUList except_list;
 761         except_list[user] = user->nick;
 762         this->WriteAllExcept(user, serversource, status, except_list, std::string(text));
 763 }
 764
 765 /*
 766  * return a count of the users on a specific channel accounting for
 767  * invisible users who won't increase the count. e.g. for /LIST
 768  */
 769 int chanrec::CountInvisible()
 770 {
 771         int count = 0;
 772         CUList *ulist= this->GetUsers();
 773         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 774         {
 775                 if (!(i->first->IsModeSet('i')))
 776                         count++;
 777         }
 778
 779         return count;
 780 }
 781
 782 char* chanrec::ChanModes(bool showkey)
 783 {
 784         static char scratch[MAXBUF];
 785         static char sparam[MAXBUF];
 786         char* offset = scratch;
 787         std::string extparam;
 788
 789         *scratch = '\0';
 790         *sparam = '\0';
 791
 792         /* This was still iterating up to 190, chanrec::modes is only 64 elements -- Om */
 793         for(int n = 0; n < 64; n++)
 794         {
 795                 if(this->modes[n])
 796                 {
 797                         *offset++ = n + 65;
 798                         extparam.clear();
 799                         switch (n)
 800                         {
 801                                 case CM_KEY:
 802                                         extparam = (showkey ? this->key : "<key>");
 803                                 break;
 804                                 case CM_LIMIT:
 805                                         extparam = ConvToStr(this->limit);
 806                                 break;
 807                                 case CM_NOEXTERNAL:
 808                                 case CM_TOPICLOCK:
 809                                 case CM_INVITEONLY:
 810                                 case CM_MODERATED:
 811                                 case CM_SECRET:
 812                                 case CM_PRIVATE:
 813                                         /* We know these have no parameters */
 814                                 break;
 815                                 default:
 816                                         extparam = this->GetModeParameter(n + 65);
 817                                 break;
 818                         }
 819                         if (!extparam.empty())
 820                         {
 821                                 charlcat(sparam,' ',MAXBUF);
 822                                 strlcat(sparam,extparam.c_str(),MAXBUF);
 823                         }
 824                 }
 825         }
 826
 827         /* Null terminate scratch */
 828         *offset = '\0';
 829         strlcat(scratch,sparam,MAXBUF);
 830         return scratch;
 831 }
 832
 833 /* compile a userlist of a channel into a string, each nick seperated by
 834  * spaces and op, voice etc status shown as @ and +, and send it to 'user'
 835  */
 836 void chanrec::UserList(userrec *user, CUList *ulist)
 837 {
 838         char list[MAXBUF];
 839         size_t dlen, curlen;
 840         int MOD_RESULT = 0;
 841
 842         if (!IS_LOCAL(user))
 843                 return;
 844
 845         FOREACH_RESULT(I_OnUserList,OnUserList(user, this, ulist));
 846         if (MOD_RESULT == 1)
 847                 return;
 848
 849         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 850
 851         int numusers = 0;
 852         char* ptr = list + dlen;
 853
 854         if (!ulist)
 855                 ulist = this->GetUsers();
 856
 857         /* Improvement by Brain - this doesnt change in value, so why was it inside
 858          * the loop?
 859          */
 860         bool has_user = this->HasUser(user);
 861
 862         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 863         {
 864                 if ((!has_user) && (i->first->IsModeSet('i')))
 865                 {
 866                         /*
 867                          * user is +i, and source not on the channel, does not show
 868                          * nick in NAMES list
 869                          */
 870                         continue;
 871                 }
 872
 873                 if (i->first->Visibility && !i->first->Visibility->VisibleTo(user))
 874                         continue;
 875
 876                 size_t ptrlen = snprintf(ptr, MAXBUF, "%s%s ", this->GetPrefixChar(i->first), i->second.c_str());
 877                 /* OnUserList can change this - reset it back to normal */
 878                 i->second = i->first->nick;
 879
 880                 curlen += ptrlen;
 881                 ptr += ptrlen;
 882
 883                 numusers++;
 884
 885                 if (curlen > (480-NICKMAX))
 886                 {
 887                         /* list overflowed into multiple numerics */
 888                         user->WriteServ(std::string(list));
 889
 890                         /* reset our lengths */
 891                         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 892                         ptr = list + dlen;
 893
 894                         ptrlen = 0;
 895                         numusers = 0;
 896                 }
 897         }
 898
 899         /* if whats left in the list isnt empty, send it */
 900         if (numusers)
 901         {
 902                 user->WriteServ(std::string(list));
 903         }
 904
 905         user->WriteServ("366 %s %s :End of /NAMES list.", user->nick, this->name);
 906 }
 907
 908 long chanrec::GetMaxBans()
 909 {
 910         /* Return the cached value if there is one */
 911         if (this->maxbans)
 912                 return this->maxbans;
 913
 914         /* If there isnt one, we have to do some O(n) hax to find it the first time. (ick) */
 915         for (std::map<std::string,int>::iterator n = ServerInstance->Config->maxbans.begin(); n != ServerInstance->Config->maxbans.end(); n++)
 916         {
 917                 if (match(this->name,n->first.c_str()))
 918                 {
 919                         this->maxbans = n->second;
 920                         return n->second;
 921                 }
 922         }
 923
 924         /* Screw it, just return the default of 64 */
 925         this->maxbans = 64;
 926         return this->maxbans;
 927 }
 928
 929 void chanrec::ResetMaxBans()
 930 {
 931         this->maxbans = 0;
 932 }
 933
 934 /* returns the status character for a given user on a channel, e.g. @ for op,
 935  * % for halfop etc. If the user has several modes set, the highest mode
 936  * the user has must be returned.
 937  */
 938 const char* chanrec::GetPrefixChar(userrec *user)
 939 {
 940         static char pf[2] = {0, 0};
 941
 942         prefixlist::iterator n = prefixes.find(user);
 943         if (n != prefixes.end())
 944         {
 945                 if (n->second.size())
 946                 {
 947                         /* If the user has any prefixes, their highest prefix
 948                          * will always be at the head of the list, as the list is
 949                          * sorted in rank order highest first (see SetPrefix()
 950                          * for reasons why)
 951                          */
 952                         *pf = n->second.begin()->first;
 953                         return pf;
 954                 }
 955         }
 956
 957         *pf = 0;
 958         return pf;
 959 }
 960
 961 const char* chanrec::GetAllPrefixChars(userrec* user)
 962 {
 963         static char prefix[MAXBUF];
 964         int ctr = 0;
 965         *prefix = 0;
 966
 967         prefixlist::iterator n = prefixes.find(user);
 968         if (n != prefixes.end())
 969         {
 970                 for (std::vector<prefixtype>::iterator x = n->second.begin(); x != n->second.end(); x++)
 971                 {
 972                         prefix[ctr++] = x->first;
 973                 }
 974         }
 975
 976         prefix[ctr] = 0;
 977
 978         return prefix;
 979 }
 980
 981 unsigned int chanrec::GetPrefixValue(userrec* user)
 982 {
 983         prefixlist::iterator n = prefixes.find(user);
 984         if (n != prefixes.end())
 985         {
 986                 if (n->second.size())
 987                         return n->second.begin()->second;
 988         }
 989         return 0;
 990 }
 991
 992 int chanrec::GetStatusFlags(userrec *user)
 993 {
 994         UCListIter i = user->chans.find(this);
 995         if (i != user->chans.end())
 996         {
 997                 return i->second;
 998         }
 999         return 0;
1000 }
1001
1002 int chanrec::GetStatus(userrec *user)
1003 {
1004         if (ServerInstance->ULine(user->server))
1005                 return STATUS_OP;
1006
1007         UCListIter i = user->chans.find(this);
1008         if (i != user->chans.end())
1009         {
1010                 if ((i->second & UCMODE_OP) > 0)
1011                 {
1012                         return STATUS_OP;
1013                 }
1014                 if ((i->second & UCMODE_HOP) > 0)
1015                 {
1016                         return STATUS_HOP;
1017                 }
1018                 if ((i->second & UCMODE_VOICE) > 0)
1019                 {
1020                         return STATUS_VOICE;
1021                 }
1022                 return STATUS_NORMAL;
1023         }
1024         return STATUS_NORMAL;
1025 }
1026
1027 void chanrec::SetPrefix(userrec* user, char prefix, unsigned int prefix_value, bool adding)
1028 {
1029         prefixlist::iterator n = prefixes.find(user);
1030         prefixtype pfx = std::make_pair(prefix,prefix_value);
1031         if (adding)
1032         {
1033                 if (n != prefixes.end())
1034                 {
1035                         if (std::find(n->second.begin(), n->second.end(), pfx) == n->second.end())
1036                         {
1037                                 n->second.push_back(pfx);
1038                                 /* We must keep prefixes in rank order, largest first.
1039                                  * This is for two reasons, firstly because x-chat *ass-u-me's* this
1040                                  * state, and secondly it turns out to be a benefit to us later.
1041                                  * See above in GetPrefix().
1042                                  */
1043                                 std::sort(n->second.begin(), n->second.end(), ModeParser::PrefixComparison);
1044                         }
1045                 }
1046                 else
1047                 {
1048                         pfxcontainer one;
1049                         one.push_back(pfx);
1050                         prefixes.insert(std::make_pair<userrec*,pfxcontainer>(user, one));
1051                 }
1052         }
1053         else
1054         {
1055                 if (n != prefixes.end())
1056                 {
1057                         pfxcontainer::iterator x = std::find(n->second.begin(), n->second.end(), pfx);
1058                         if (x != n->second.end())
1059                                 n->second.erase(x);
1060                 }
1061         }
1062 }
1063
1064 void chanrec::RemoveAllPrefixes(userrec* user)
1065 {
1066         prefixlist::iterator n = prefixes.find(user);
1067         if (n != prefixes.end())
1068         {
1069                 prefixes.erase(n);
1070         }
1071 }
1072