src/users.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 #include "inspircd_config.h"
  18 #include "configreader.h"
  19 #include "channels.h"
  20 #include "connection.h"
  21 #include "users.h"
  22 #include "inspircd.h"
  23 #include <stdarg.h>
  24 #include "inspstring.h"
  25 #include "commands.h"
  26 #include "helperfuncs.h"
  27 #include "typedefs.h"
  28 #include "socketengine.h"
  29 #include "hashcomp.h"
  30 #include "message.h"
  31 #include "wildcard.h"
  32 #include "xline.h"
  33 #include "cull_list.h"
  34
  35 extern InspIRCd* ServerInstance;
  36 extern int WHOWAS_STALE;
  37 extern int WHOWAS_MAX;
  38 extern std::vector<Module*> modules;
  39 extern std::vector<ircd_module*> factory;
  40 extern std::vector<InspSocket*> module_sockets;
  41 extern int MODCOUNT;
  42 extern InspSocket* socket_ref[MAX_DESCRIPTORS];
  43 extern time_t TIME;
  44 extern userrec* fd_ref_table[MAX_DESCRIPTORS];
  45 extern ServerConfig *Config;
  46 extern user_hash clientlist;
  47 extern Server* MyServer;
  48 extern std::vector<userrec*> local_users;
  49
  50 irc::whowas::whowas_users whowas;
  51 static unsigned long already_sent[MAX_DESCRIPTORS] = {0};
  52 std::vector<userrec*> all_opers;
  53
  54 typedef std::map<irc::string,char*> opertype_t;
  55 typedef opertype_t operclass_t;
  56
  57 opertype_t opertypes;
  58 operclass_t operclass;
  59
  60 /* XXX: Used for speeding up WriteCommon operations */
  61 unsigned long uniq_id = 0;
  62
  63 bool InitTypes(const char* tag)
  64 {
  65         for (opertype_t::iterator n = opertypes.begin(); n != opertypes.end(); n++)
  66         {
  67                 if (n->second)
  68                         delete[] n->second;
  69         }
  70
  71         opertypes.clear();
  72         return true;
  73 }
  74
  75 bool InitClasses(const char* tag)
  76 {
  77         for (operclass_t::iterator n = operclass.begin(); n != operclass.end(); n++)
  78         {
  79                 if (n->second)
  80                         delete[] n->second;
  81         }
  82
  83         operclass.clear();
  84         return true;
  85 }
  86
  87 bool DoType(const char* tag, char** entries, void** values, int* types)
  88 {
  89         char* TypeName = (char*)values[0];
  90         char* Classes = (char*)values[1];
  91
  92         opertypes[TypeName] = strdup(Classes);
  93         log(DEBUG,"Read oper TYPE '%s' with classes '%s'",TypeName,Classes);
  94         return true;
  95 }
  96
  97 bool DoClass(const char* tag, char** entries, void** values, int* types)
  98 {
  99         char* ClassName = (char*)values[0];
 100         char* CommandList = (char*)values[1];
 101
 102         operclass[ClassName] = strdup(CommandList);
 103         log(DEBUG,"Read oper CLASS '%s' with commands '%s'",ClassName,CommandList);
 104         return true;
 105 }
 106
 107 bool DoneClassesAndTypes(const char* tag)
 108 {
 109         return true;
 110 }
 111
 112 bool userrec::ProcessNoticeMasks(const char *sm)
 113 {
 114         bool adding = true;
 115         const char *c = sm;
 116
 117         while (c && *c)
 118         {
 119                 switch (*c)
 120                 {
 121                         case '+':
 122                                 adding = true;
 123                                 break;
 124                         case '-':
 125                                 adding = false;
 126                                 break;
 127                         default:
 128                                 if ((*c >= 'A') && (*c <= 'z'))
 129                                         this->SetNoticeMask(*c, adding);
 130                                 break;
 131                 }
 132
 133                 *c++;
 134         }
 135
 136         return true;
 137 }
 138
 139 void userrec::StartDNSLookup()
 140 {
 141         log(DEBUG,"Commencing reverse lookup");
 142         try
 143         {
 144                 res_reverse = new UserResolver(this, this->GetIPString(), false);
 145                 MyServer->AddResolver(res_reverse);
 146         }
 147         catch (ModuleException& e)
 148         {
 149                 log(DEBUG,"Error in resolver: %s",e.GetReason());
 150         }
 151 }
 152
 153 UserResolver::UserResolver(userrec* user, std::string to_resolve, bool forward) : Resolver(to_resolve, forward ? DNS_QUERY_FORWARD : DNS_QUERY_REVERSE), bound_user(user)
 154 {
 155         this->fwd = forward;
 156         this->bound_fd = user->fd;
 157 }
 158
 159 void UserResolver::OnLookupComplete(const std::string &result)
 160 {
 161         if ((!this->fwd) && (fd_ref_table[this->bound_fd] == this->bound_user))
 162         {
 163                 log(DEBUG,"Commencing forward lookup");
 164                 this->bound_user->stored_host = result;
 165                 try
 166                 {
 167                         bound_user->res_forward = new UserResolver(this->bound_user, result, true);
 168                         MyServer->AddResolver(bound_user->res_forward);
 169                 }
 170                 catch (ModuleException& e)
 171                 {
 172                         log(DEBUG,"Error in resolver: %s",e.GetReason());
 173                 }
 174         }
 175         else if ((this->fwd) && (fd_ref_table[this->bound_fd] == this->bound_user))
 176         {
 177                 /* Both lookups completed */
 178                 if (this->bound_user->GetIPString() == result)
 179                 {
 180                         std::string hostname = this->bound_user->stored_host;
 181                         if (hostname.length() < 65)
 182                         {
 183                                 /* Hostnames starting with : are not a good thing (tm) */
 184                                 if (*(hostname.c_str()) == ':')
 185                                         hostname = "0" + hostname;
 186
 187                                 this->bound_user->WriteServ("NOTICE Auth :*** Found your hostname (%s)", hostname.c_str());
 188                                 this->bound_user->dns_done = true;
 189                                 strlcpy(this->bound_user->dhost, hostname.c_str(),64);
 190                                 strlcpy(this->bound_user->host, hostname.c_str(),64);
 191                         }
 192                         else
 193                         {
 194                                 this->bound_user->WriteServ("NOTICE Auth :*** Your hostname is longer than the maximum of 64 characters, using your IP address (%s) instead.", this->bound_user->GetIPString());
 195                         }
 196                 }
 197                 else
 198                 {
 199                         this->bound_user->WriteServ("NOTICE Auth :*** Your hostname does not match up with your IP address. Sorry, using your IP address (%s) instead.", this->bound_user->GetIPString());
 200                 }
 201         }
 202 }
 203
 204 void UserResolver::OnError(ResolverError e, const std::string &errormessage)
 205 {
 206         if (fd_ref_table[this->bound_fd] == this->bound_user)
 207         {
 208                 /* Error message here */
 209                 this->bound_user->WriteServ("NOTICE Auth :*** Could not resolve your hostname, using your IP address (%s) instead.", this->bound_user->GetIPString());
 210                 this->bound_user->dns_done = true;
 211         }
 212 }
 213
 214
 215 bool userrec::IsNoticeMaskSet(unsigned char sm)
 216 {
 217         return (snomasks[sm-65]);
 218 }
 219
 220 void userrec::SetNoticeMask(unsigned char sm, bool value)
 221 {
 222         snomasks[sm-65] = value;
 223 }
 224
 225 const char* userrec::FormatNoticeMasks()
 226 {
 227         static char data[MAXBUF];
 228         int offset = 0;
 229
 230         for (int n = 0; n < 64; n++)
 231         {
 232                 if (snomasks[n])
 233                         data[offset++] = n+65;
 234         }
 235
 236         data[offset] = 0;
 237         return data;
 238 }
 239
 240
 241
 242 bool userrec::IsModeSet(unsigned char m)
 243 {
 244         return (modes[m-65]);
 245 }
 246
 247 void userrec::SetMode(unsigned char m, bool value)
 248 {
 249         modes[m-65] = value;
 250 }
 251
 252 const char* userrec::FormatModes()
 253 {
 254         static char data[MAXBUF];
 255         int offset = 0;
 256         for (int n = 0; n < 64; n++)
 257         {
 258                 if (modes[n])
 259                         data[offset++] = n+65;
 260         }
 261         data[offset] = 0;
 262         return data;
 263 }
 264
 265 userrec::userrec()
 266 {
 267         // the PROPER way to do it, AVOID bzero at *ALL* costs
 268         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = 0;
 269         server = (char*)FindServerNamePtr(Config->ServerName);
 270         reset_due = TIME;
 271         lines_in = fd = lastping = signon = idle_lastmsg = nping = registered = 0;
 272         timeout = flood = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 273         haspassed = dns_done = false;
 274         recvq = "";
 275         sendq = "";
 276         WriteError = "";
 277         res_forward = res_reverse = NULL;
 278         ip = NULL;
 279         chans.clear();
 280         invites.clear();
 281         chans.resize(MAXCHANS);
 282         memset(modes,0,sizeof(modes));
 283
 284         for (unsigned int n = 0; n < MAXCHANS; n++)
 285         {
 286                 ucrec* x = new ucrec();
 287                 chans[n] = x;
 288                 x->channel = NULL;
 289                 x->uc_modes = 0;
 290         }
 291 }
 292
 293 userrec::~userrec()
 294 {
 295         for (std::vector<ucrec*>::iterator n = chans.begin(); n != chans.end(); n++)
 296         {
 297                 ucrec* x = (ucrec*)*n;
 298                 delete x;
 299         }
 300
 301         if (ip)
 302         {
 303                 if (this->GetProtocolFamily() == AF_INET)
 304                 {
 305                         delete (sockaddr_in*)ip;
 306                 }
 307 #ifdef SUPPORT_IP6LINKS
 308                 else
 309                 {
 310                         delete (sockaddr_in6*)ip;
 311                 }
 312 #endif
 313         }
 314 }
 315
 316 /* XXX - minor point, other *Host functions return a char *, this one creates it. Might be nice to be consistant? */
 317 void userrec::MakeHost(char* nhost)
 318 {
 319         /* This is much faster than snprintf */
 320         char* t = nhost;
 321         for(char* n = ident; *n; n++)
 322                 *t++ = *n;
 323         *t++ = '@';
 324         for(char* n = host; *n; n++)
 325                 *t++ = *n;
 326         *t = 0;
 327 }
 328
 329 void userrec::CloseSocket()
 330 {
 331         shutdown(this->fd,2);
 332         close(this->fd);
 333 }
 334
 335 char* userrec::GetFullHost()
 336 {
 337         static char result[MAXBUF];
 338         char* t = result;
 339         for(char* n = nick; *n; n++)
 340                 *t++ = *n;
 341         *t++ = '!';
 342         for(char* n = ident; *n; n++)
 343                 *t++ = *n;
 344         *t++ = '@';
 345         for(char* n = dhost; *n; n++)
 346                 *t++ = *n;
 347         *t = 0;
 348         return result;
 349 }
 350
 351 char* userrec::MakeWildHost()
 352 {
 353         static char nresult[MAXBUF];
 354         char* t = nresult;
 355         *t++ = '*';     *t++ = '!';
 356         *t++ = '*';     *t++ = '@';
 357         for(char* n = dhost; *n; n++)
 358                 *t++ = *n;
 359         *t = 0;
 360         return nresult;
 361 }
 362
 363 int userrec::ReadData(void* buffer, size_t size)
 364 {
 365         if (this->fd > -1)
 366         {
 367                 return read(this->fd, buffer, size);
 368         }
 369         else
 370                 return 0;
 371 }
 372
 373
 374 char* userrec::GetFullRealHost()
 375 {
 376         static char fresult[MAXBUF];
 377         char* t = fresult;
 378         for(char* n = nick; *n; n++)
 379                 *t++ = *n;
 380         *t++ = '!';
 381         for(char* n = ident; *n; n++)
 382                 *t++ = *n;
 383         *t++ = '@';
 384         for(char* n = host; *n; n++)
 385                 *t++ = *n;
 386         *t = 0;
 387         return fresult;
 388 }
 389
 390 bool userrec::IsInvited(irc::string &channel)
 391 {
 392         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 393         {
 394                 irc::string compare = i->channel;
 395
 396                 if (compare == channel)
 397                 {
 398                         return true;
 399                 }
 400         }
 401         return false;
 402 }
 403
 404 InvitedList* userrec::GetInviteList()
 405 {
 406         return &invites;
 407 }
 408
 409 void userrec::InviteTo(irc::string &channel)
 410 {
 411         Invited i;
 412         i.channel = channel;
 413         invites.push_back(i);
 414 }
 415
 416 void userrec::RemoveInvite(irc::string &channel)
 417 {
 418         log(DEBUG,"Removing invites");
 419
 420         if (invites.size())
 421         {
 422                 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 423                 {
 424                         irc::string compare = i->channel;
 425
 426                         if (compare == channel)
 427                         {
 428                                 invites.erase(i);
 429                                 return;
 430                         }
 431                 }
 432         }
 433 }
 434
 435 bool userrec::HasPermission(const std::string &command)
 436 {
 437         char* mycmd;
 438         char* savept;
 439         char* savept2;
 440
 441         /*
 442          * users on remote servers can completely bypass all permissions based checks.
 443          * This prevents desyncs when one server has different type/class tags to another.
 444          * That having been said, this does open things up to the possibility of source changes
 445          * allowing remote kills, etc - but if they have access to the src, they most likely have
 446          * access to the conf - so it's an end to a means either way.
 447          */
 448         if (!IS_LOCAL(this))
 449                 return true;
 450
 451         // are they even an oper at all?
 452         if (*this->oper)
 453         {
 454                 opertype_t::iterator iter_opertype = opertypes.find(this->oper);
 455                 if (iter_opertype != opertypes.end())
 456                 {
 457                         char* Classes = strdup(iter_opertype->second);
 458                         char* myclass = strtok_r(Classes," ",&savept);
 459                         while (myclass)
 460                         {
 461                                 operclass_t::iterator iter_operclass = operclass.find(myclass);
 462                                 if (iter_operclass != operclass.end())
 463                                 {
 464                                         char* CommandList = strdup(iter_operclass->second);
 465                                         mycmd = strtok_r(CommandList," ",&savept2);
 466                                         while (mycmd)
 467                                         {
 468                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 469                                                 {
 470                                                         free(Classes);
 471                                                         free(CommandList);
 472                                                         return true;
 473                                                 }
 474                                                 mycmd = strtok_r(NULL," ",&savept2);
 475                                         }
 476                                         free(CommandList);
 477                                 }
 478                                 myclass = strtok_r(NULL," ",&savept);
 479                         }
 480                         free(Classes);
 481                 }
 482         }
 483         return false;
 484 }
 485
 486
 487 bool userrec::AddBuffer(const std::string &a)
 488 {
 489         std::string b = "";
 490
 491         /* NB: std::string is arsey about \r and \n and tries to translate them
 492          * somehow, so we CANNOT use std::string::find() here :(
 493          */
 494         for (std::string::const_iterator i = a.begin(); i != a.end(); i++)
 495         {
 496                 if (*i != '\r')
 497                         b += *i;
 498         }
 499
 500         if (b.length())
 501                 recvq.append(b);
 502
 503         if (recvq.length() > (unsigned)this->recvqmax)
 504         {
 505                 this->SetWriteError("RecvQ exceeded");
 506                 WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 507                 return false;
 508         }
 509
 510         return true;
 511 }
 512
 513 bool userrec::BufferIsReady()
 514 {
 515         return (recvq.find('\n') != std::string::npos);
 516 }
 517
 518 void userrec::ClearBuffer()
 519 {
 520         recvq = "";
 521 }
 522
 523 std::string userrec::GetBuffer()
 524 {
 525         if (!recvq.length())
 526                 return "";
 527
 528         /* Strip any leading \r or \n off the string.
 529          * Usually there are only one or two of these,
 530          * so its is computationally cheap to do.
 531          */
 532         while ((*recvq.begin() == '\r') || (*recvq.begin() == '\n'))
 533                 recvq.erase(recvq.begin());
 534
 535         for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 536         {
 537                 /* Find the first complete line, return it as the
 538                  * result, and leave the recvq as whats left
 539                  */
 540                 if (*x == '\n')
 541                 {
 542                         std::string ret = std::string(recvq.begin(), x);
 543                         recvq.erase(recvq.begin(), x + 1);
 544                         return ret;
 545                 }
 546         }
 547         return "";
 548 }
 549
 550 void userrec::AddWriteBuf(const std::string &data)
 551 {
 552         if (*this->GetWriteError())
 553                 return;
 554
 555         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 556         {
 557                 /*
 558                  * Fix by brain - Set the error text BEFORE calling writeopers, because
 559                  * if we dont it'll recursively  call here over and over again trying
 560                  * to repeatedly add the text to the sendq!
 561                  */
 562                 this->SetWriteError("SendQ exceeded");
 563                 WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 564                 return;
 565         }
 566
 567         if (data.length() > 512)
 568         {
 569                 std::string newdata(data);
 570                 newdata.resize(510);
 571                 newdata.append("\r\n");
 572                 sendq.append(newdata);
 573         }
 574         else
 575         {
 576                 sendq.append(data);
 577         }
 578 }
 579
 580 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 581 void userrec::FlushWriteBuf()
 582 {
 583         if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 584         {
 585                 const char* tb = this->sendq.c_str();
 586                 int n_sent = write(this->fd,tb,this->sendq.length());
 587                 if (n_sent == -1)
 588                 {
 589                         if (errno != EAGAIN)
 590                                 this->SetWriteError(strerror(errno));
 591                 }
 592                 else
 593                 {
 594                         // advance the queue
 595                         tb += n_sent;
 596                         this->sendq = tb;
 597                         // update the user's stats counters
 598                         this->bytes_out += n_sent;
 599                         this->cmds_out++;
 600                 }
 601         }
 602 }
 603
 604 void userrec::SetWriteError(const std::string &error)
 605 {
 606         log(DEBUG,"SetWriteError: %s",error.c_str());
 607         // don't try to set the error twice, its already set take the first string.
 608         if (!this->WriteError.length())
 609         {
 610                 log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 611                 this->WriteError = error;
 612         }
 613 }
 614
 615 const char* userrec::GetWriteError()
 616 {
 617         return this->WriteError.c_str();
 618 }
 619
 620 void userrec::Oper(const std::string &opertype)
 621 {
 622         this->modes[UM_OPERATOR] = 1;
 623         this->WriteServ("MODE %s :+o", this->nick);
 624         FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 625         log(DEFAULT,"OPER: %s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 626         strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 627         all_opers.push_back(this);
 628         FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype));
 629 }
 630
 631 void userrec::UnOper()
 632 {
 633         if (*this->oper)
 634         {
 635                 *this->oper = 0;
 636                 this->modes[UM_OPERATOR] = 0;
 637                 for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
 638                 {
 639                         if (*a == this)
 640                         {
 641                                 log(DEBUG,"Oper removed from optimization list");
 642                                 all_opers.erase(a);
 643                                 return;
 644                         }
 645                 }
 646         }
 647 }
 648
 649 void userrec::QuitUser(userrec *user,const std::string &quitreason)
 650 {
 651         user_hash::iterator iter = clientlist.find(user->nick);
 652
 653 /*
 654  * I'm pretty sure returning here is causing a desync when part of the net thinks a user is gone,
 655  * and another part doesn't. We want to broadcast the quit/kill before bailing so the net stays in sync.
 656  *
 657  * I can't imagine this blowing up, so I'm commenting it out. We still check
 658  * before playing with a bad iterator below in our if(). DISCUSS THIS BEFORE YOU DO ANYTHING. --w00t
 659  *
 660  *      if (iter == clientlist.end())
 661  *              return;
 662  */
 663         std::string reason = quitreason;
 664
 665         if (reason.length() > MAXQUIT - 1)
 666                 reason.resize(MAXQUIT - 1);
 667
 668         if (IS_LOCAL(user))
 669                 user->Write("ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason.c_str());
 670
 671         if (user->registered == REG_ALL)
 672         {
 673                 purge_empty_chans(user);
 674                 FOREACH_MOD(I_OnUserQuit,OnUserQuit(user,reason));
 675                 user->WriteCommonExcept("QUIT :%s",reason.c_str());
 676         }
 677
 678         if (IS_LOCAL(user))
 679                 user->FlushWriteBuf();
 680
 681         FOREACH_MOD(I_OnUserDisconnect,OnUserDisconnect(user));
 682
 683         if (IS_LOCAL(user))
 684         {
 685                 if (Config->GetIOHook(user->GetPort()))
 686                 {
 687                         try
 688                         {
 689                                 Config->GetIOHook(user->GetPort())->OnRawSocketClose(user->fd);
 690                         }
 691                         catch (ModuleException& modexcept)
 692                         {
 693                                 log(DEBUG,"Module exception cought: %s",modexcept.GetReason());
 694                         }
 695                 }
 696
 697                 ServerInstance->SE->DelFd(user->fd);
 698                 user->CloseSocket();
 699         }
 700
 701         /*
 702          * this must come before the WriteOpers so that it doesnt try to fill their buffer with anything
 703          * if they were an oper with +s.
 704          *
 705          * XXX -
 706          * In the current implementation, we only show local quits, as we only show local connects. With
 707          * the proposed implmentation of snomasks however, this will likely change in the (near?) future.
 708          */
 709         if (user->registered == REG_ALL)
 710         {
 711                 if (IS_LOCAL(user))
 712                         WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason.c_str());
 713                 user->AddToWhoWas();
 714         }
 715
 716         if (iter != clientlist.end())
 717         {
 718                 log(DEBUG,"deleting user hash value %lx",(unsigned long)user);
 719                 if (IS_LOCAL(user))
 720                 {
 721                         fd_ref_table[user->fd] = NULL;
 722                         if (find(local_users.begin(),local_users.end(),user) != local_users.end())
 723                                 local_users.erase(find(local_users.begin(),local_users.end(),user));
 724                 }
 725                 clientlist.erase(iter);
 726                 DELETE(user);
 727         }
 728 }
 729
 730 namespace irc
 731 {
 732         namespace whowas
 733         {
 734
 735                 WhoWasGroup::WhoWasGroup(userrec* user) : host(NULL), dhost(NULL), ident(NULL), server(NULL), gecos(NULL), signon(user->signon)
 736                 {
 737                         this->host = strdup(user->host);
 738                         this->dhost = strdup(user->dhost);
 739                         this->ident = strdup(user->ident);
 740                         this->server = user->server;
 741                         this->gecos = strdup(user->fullname);
 742                 }
 743
 744                 WhoWasGroup::~WhoWasGroup()
 745                 {
 746                         if (host)
 747                                 free(host);
 748                         if (dhost)
 749                                 free(dhost);
 750                         if (ident)
 751                                 free(ident);
 752                         if (gecos)
 753                                 free(gecos);
 754                 }
 755
 756                 /* every hour, run this function which removes all entries over 3 days */
 757                 void MaintainWhoWas(time_t TIME)
 758                 {
 759                         for (whowas_users::iterator iter = ::whowas.begin(); iter != ::whowas.end(); iter++)
 760                         {
 761                                 whowas_set* n = (whowas_set*)iter->second;
 762                                 if (n->size())
 763                                 {
 764                                         while ((n->begin() != n->end()) && ((*n->begin())->signon < TIME - 259200)) // 3 days
 765                                         {
 766                                                 WhoWasGroup *a = *(n->begin());
 767                                                 DELETE(a);
 768                                                 n->erase(n->begin());
 769                                         }
 770                                 }
 771                         }
 772                 }
 773         };
 774 };
 775
 776 /* adds or updates an entry in the whowas list */
 777 void userrec::AddToWhoWas()
 778 {
 779         irc::whowas::whowas_users::iterator iter = whowas.find(this->nick);
 780
 781         if (iter == whowas.end())
 782         {
 783                 irc::whowas::whowas_set* n = new irc::whowas::whowas_set;
 784                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 785                 n->push_back(a);
 786                 whowas[this->nick] = n;
 787         }
 788         else
 789         {
 790                 irc::whowas::whowas_set* group = (irc::whowas::whowas_set*)iter->second;
 791
 792                 if (group->size() > 10)
 793                 {
 794                         irc::whowas::WhoWasGroup *a = (irc::whowas::WhoWasGroup*)*(group->begin());
 795                         DELETE(a);
 796                         group->pop_front();
 797                 }
 798
 799                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 800                 group->push_back(a);
 801         }
 802 }
 803
 804 /* add a client connection to the sockets list */
 805 void userrec::AddClient(int socket, int port, bool iscached, insp_inaddr ip)
 806 {
 807         std::string tempnick = ConvToStr(socket) + "-unknown";
 808         user_hash::iterator iter = clientlist.find(tempnick);
 809         const char *ipaddr = insp_ntoa(ip);
 810         userrec* _new;
 811         int j = 0;
 812
 813         /*
 814          * fix by brain.
 815          * as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 816          * using one as a registered connection. As they are per fd, we can also safely assume
 817          * that we wont have collisions. Therefore, if the nick exists in the list, its only
 818          * used by a dead socket, erase the iterator so that the new client may reclaim it.
 819          * this was probably the cause of 'server ignores me when i hammer it with reconnects'
 820          * issue in earlier alphas/betas
 821          */
 822         if (iter != clientlist.end())
 823         {
 824                 userrec* goner = iter->second;
 825                 DELETE(goner);
 826                 clientlist.erase(iter);
 827         }
 828
 829         log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr);
 830
 831         _new = new userrec();
 832         clientlist[tempnick] = _new;
 833         _new->fd = socket;
 834         strlcpy(_new->nick,tempnick.c_str(),NICKMAX-1);
 835
 836         _new->server = FindServerNamePtr(Config->ServerName);
 837         /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
 838         strcpy(_new->ident, "unknown");
 839
 840         _new->registered = REG_NONE;
 841         _new->signon = TIME + Config->dns_timeout;
 842         _new->lastping = 1;
 843
 844         log(DEBUG,"Setting socket addresses");
 845         _new->SetSockAddr(AF_FAMILY, ipaddr, port);
 846         log(DEBUG,"Socket addresses set.");
 847
 848         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
 849         for (const char* temp = _new->GetIPString(); *temp && j < 64; temp++, j++)
 850                 _new->dhost[j] = _new->host[j] = *temp;
 851         _new->dhost[j] = _new->host[j] = 0;
 852
 853         // set the registration timeout for this user
 854         unsigned long class_regtimeout = 90;
 855         int class_flood = 0;
 856         long class_threshold = 5;
 857         long class_sqmax = 262144;      // 256kb
 858         long class_rqmax = 4096;        // 4k
 859
 860         for (ClassVector::iterator i = Config->Classes.begin(); i != Config->Classes.end(); i++)
 861         {
 862                 if ((i->type == CC_ALLOW) && (match(ipaddr,i->host.c_str(),true)))
 863                 {
 864                         class_regtimeout = (unsigned long)i->registration_timeout;
 865                         class_flood = i->flood;
 866                         _new->pingmax = i->pingtime;
 867                         class_threshold = i->threshold;
 868                         class_sqmax = i->sendqmax;
 869                         class_rqmax = i->recvqmax;
 870                         break;
 871                 }
 872         }
 873
 874         _new->nping = TIME + _new->pingmax + Config->dns_timeout;
 875         _new->timeout = TIME+class_regtimeout;
 876         _new->flood = class_flood;
 877         _new->threshold = class_threshold;
 878         _new->sendqmax = class_sqmax;
 879         _new->recvqmax = class_rqmax;
 880
 881         fd_ref_table[socket] = _new;
 882         local_users.push_back(_new);
 883
 884         if (local_users.size() > Config->SoftLimit)
 885         {
 886                 userrec::QuitUser(_new,"No more connections allowed");
 887                 return;
 888         }
 889
 890         if (local_users.size() >= MAXCLIENTS)
 891         {
 892                 userrec::QuitUser(_new,"No more connections allowed");
 893                 return;
 894         }
 895
 896         /*
 897          * XXX -
 898          * this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 899          * its a pretty big but for the moment valid assumption:
 900          * file descriptors are handed out starting at 0, and are recycled as theyre freed.
 901          * therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 902          * irc server at once (or the irc server otherwise initiating this many connections, files etc)
 903          * which for the time being is a physical impossibility (even the largest networks dont have more
 904          * than about 10,000 users on ONE server!)
 905          */
 906         if ((unsigned)socket >= MAX_DESCRIPTORS)
 907         {
 908                 userrec::QuitUser(_new,"Server is full");
 909                 return;
 910         }
 911         char* e = matches_exception(ipaddr);
 912         if (!e)
 913         {
 914                 char* r = matches_zline(ipaddr);
 915                 if (r)
 916                 {
 917                         char reason[MAXBUF];
 918                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
 919                         userrec::QuitUser(_new,reason);
 920                         return;
 921                 }
 922         }
 923
 924         if (socket > -1)
 925         {
 926                 if (!ServerInstance->SE->AddFd(socket,true,X_ESTAB_CLIENT))
 927                 {
 928                         userrec::QuitUser(_new, "Internal error handling connection");
 929                         return;
 930                 }
 931         }
 932
 933         _new->WriteServ("NOTICE Auth :*** Looking up your hostname...");
 934 }
 935
 936 long userrec::GlobalCloneCount()
 937 {
 938         char u1[1024];
 939         char u2[1024];
 940         long x = 0;
 941         for (user_hash::const_iterator a = clientlist.begin(); a != clientlist.end(); a++)
 942         {
 943                 /* We have to match ip's as strings - we don't know what protocol
 944                  * a remote user may be using
 945                  */
 946                 if (!strcasecmp(a->second->GetIPString(u1), this->GetIPString(u2)))
 947                                 x++;
 948         }
 949         return x;
 950 }
 951
 952 long userrec::LocalCloneCount()
 953 {
 954         long x = 0;
 955         for (std::vector<userrec*>::const_iterator a = local_users.begin(); a != local_users.end(); a++)
 956         {
 957                 userrec* comp = *a;
 958 #ifdef IPV6
 959                 /* I dont think theres any faster way of matching two ipv6 addresses than memcmp */
 960                 in6_addr* s1 = &(((sockaddr_in6*)comp->ip)->sin6_addr);
 961                 in6_addr* s2 = &(((sockaddr_in6*)this->ip)->sin6_addr);
 962                 if (!memcmp(s1->s6_addr, s2->s6_addr, sizeof(in6_addr)))
 963                         x++;
 964 #else
 965                 in_addr* s1 = &((sockaddr_in*)comp->ip)->sin_addr;
 966                 in_addr* s2 = &((sockaddr_in*)this->ip)->sin_addr;
 967                 if (s1->s_addr == s2->s_addr)
 968                         x++;
 969 #endif
 970         }
 971         return x;
 972 }
 973
 974 void userrec::FullConnect(CullList* Goners)
 975 {
 976         ServerInstance->stats->statsConnects++;
 977         this->idle_lastmsg = TIME;
 978
 979         ConnectClass a = GetClass(this);
 980
 981         if (a.type == CC_DENY)
 982         {
 983                 Goners->AddItem(this,"Unauthorised connection");
 984                 return;
 985         }
 986
 987         if ((*(a.pass.c_str())) && (!this->haspassed))
 988         {
 989                 Goners->AddItem(this,"Invalid password");
 990                 return;
 991         }
 992
 993         if (this->LocalCloneCount() > a.maxlocal)
 994         {
 995                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (local)");
 996                 WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a.maxlocal, this->GetIPString());
 997                 return;
 998         }
 999         else if (this->GlobalCloneCount() > a.maxglobal)
1000         {
1001                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (global)");
1002                 WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a.maxglobal, this->GetIPString());
1003                 return;
1004         }
1005
1006         char match_against[MAXBUF];
1007         snprintf(match_against,MAXBUF,"%s@%s", this->ident, this->host);
1008         char* e = matches_exception(match_against);
1009
1010         if (!e)
1011         {
1012                 char* r = matches_gline(match_against);
1013
1014                 if (r)
1015                 {
1016                         char reason[MAXBUF];
1017                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
1018                         Goners->AddItem(this, reason);
1019                         return;
1020                 }
1021
1022                 r = matches_kline(match_against);
1023
1024                 if (r)
1025                 {
1026                         char reason[MAXBUF];
1027                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
1028                         Goners->AddItem(this, reason);
1029                         return;
1030                 }
1031         }
1032
1033
1034         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",Config->Network);
1035         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, Config->Network, this->nick, this->ident, this->host);
1036         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,Config->ServerName,VERSION);
1037         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
1038         this->WriteServ("004 %s %s %s %s %s %s", this->nick, Config->ServerName, VERSION, ServerInstance->ModeGrok->UserModeList().c_str(), ServerInstance->ModeGrok->ChannelModeList().c_str(), ServerInstance->ModeGrok->ParaModeList().c_str());
1039
1040         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
1041         // so i'd better split it :)
1042         std::stringstream out(Config->data005);
1043         std::string token = "";
1044         std::string line5 = "";
1045         int token_counter = 0;
1046
1047         while (!out.eof())
1048         {
1049                 out >> token;
1050                 line5 = line5 + token + " ";
1051                 token_counter++;
1052
1053                 if ((token_counter >= 13) || (out.eof() == true))
1054                 {
1055                         this->WriteServ("005 %s %s:are supported by this server", this->nick, line5.c_str());
1056                         line5 = "";
1057                         token_counter = 0;
1058                 }
1059         }
1060
1061         ShowMOTD(this);
1062
1063         /*
1064          * fix 3 by brain, move registered = 7 below these so that spurious modes and host
1065          * changes dont go out onto the network and produce 'fake direction'.
1066          */
1067         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
1068         FOREACH_MOD(I_OnGlobalConnect,OnGlobalConnect(this));
1069         this->registered = REG_ALL;
1070         WriteOpers("*** Client connecting on port %d: %s!%s@%s [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString());
1071 }
1072
1073 /** userrec::UpdateNick()
1074  * re-allocates a nick in the user_hash after they change nicknames,
1075  * returns a pointer to the new user as it may have moved
1076  */
1077 userrec* userrec::UpdateNickHash(const char* New)
1078 {
1079         //user_hash::iterator newnick;
1080         user_hash::iterator oldnick = clientlist.find(this->nick);
1081
1082         if (!strcasecmp(this->nick,New))
1083                 return oldnick->second;
1084
1085         if (oldnick == clientlist.end())
1086                 return NULL; /* doesnt exist */
1087
1088         userrec* olduser = oldnick->second;
1089         clientlist[New] = olduser;
1090         clientlist.erase(oldnick);
1091         return clientlist[New];
1092 }
1093
1094 bool userrec::ForceNickChange(const char* newnick)
1095 {
1096         char nick[MAXBUF];
1097         int MOD_RESULT = 0;
1098
1099         *nick = 0;
1100
1101         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1102
1103         if (MOD_RESULT)
1104         {
1105                 ServerInstance->stats->statsCollisions++;
1106                 return false;
1107         }
1108
1109         if (matches_qline(newnick))
1110         {
1111                 ServerInstance->stats->statsCollisions++;
1112                 return false;
1113         }
1114
1115         if (newnick)
1116         {
1117                 strlcpy(this->nick, newnick, NICKMAX - 1);
1118         }
1119         if (this->registered == REG_ALL)
1120         {
1121                 const char* pars[1];
1122                 pars[0] = nick;
1123                 std::string cmd = "NICK";
1124                 ServerInstance->Parser->CallHandler(cmd, pars, 1, this);
1125         }
1126         return true;
1127 }
1128
1129 void userrec::SetSockAddr(int protocol_family, const char* ip, int port)
1130 {
1131         switch (protocol_family)
1132         {
1133 #ifdef SUPPORT_IP6LINKS
1134                 case AF_INET6:
1135                 {
1136                         log(DEBUG,"Set inet6 protocol address");
1137                         sockaddr_in6* sin = new sockaddr_in6;
1138                         sin->sin6_family = AF_INET6;
1139                         sin->sin6_port = port;
1140                         inet_pton(AF_INET6, ip, &sin->sin6_addr);
1141                         this->ip = (sockaddr*)sin;
1142                 }
1143                 break;
1144 #endif
1145                 case AF_INET:
1146                 {
1147                         log(DEBUG,"Set inet4 protocol address");
1148                         sockaddr_in* sin = new sockaddr_in;
1149                         sin->sin_family = AF_INET;
1150                         sin->sin_port = port;
1151                         inet_pton(AF_INET, ip, &sin->sin_addr);
1152                         this->ip = (sockaddr*)sin;
1153                 }
1154                 break;
1155                 default:
1156                         log(DEBUG,"Ut oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1157                 break;
1158         }
1159 }
1160
1161 int userrec::GetPort()
1162 {
1163         if (this->ip == NULL)
1164                 return 0;
1165
1166         switch (this->GetProtocolFamily())
1167         {
1168 #ifdef SUPPORT_IP6LINKS
1169                 case AF_INET6:
1170                 {
1171                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1172                         return sin->sin6_port;
1173                 }
1174                 break;
1175 #endif
1176                 case AF_INET:
1177                 {
1178                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1179                         return sin->sin_port;
1180                 }
1181                 break;
1182                 default:
1183                         log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1184                 break;
1185         }
1186         return 0;
1187 }
1188
1189 int userrec::GetProtocolFamily()
1190 {
1191         if (this->ip == NULL)
1192                 return 0;
1193
1194         sockaddr_in* sin = (sockaddr_in*)this->ip;
1195         return sin->sin_family;
1196 }
1197
1198 const char* userrec::GetIPString()
1199 {
1200         static char buf[1024];
1201         static char temp[1024];
1202
1203         if (this->ip == NULL)
1204                 return "";
1205
1206         switch (this->GetProtocolFamily())
1207         {
1208 #ifdef SUPPORT_IP6LINKS
1209                 case AF_INET6:
1210                 {
1211                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1212                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1213                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1214                         if (*buf == ':')
1215                         {
1216                                 strlcpy(&temp[1], buf, sizeof(temp));
1217                                 *temp = '0';
1218                                 return temp;
1219                         }
1220                         return buf;
1221                 }
1222                 break;
1223 #endif
1224                 case AF_INET:
1225                 {
1226                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1227                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1228                         return buf;
1229                 }
1230                 break;
1231                 default:
1232                         log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1233                 break;
1234         }
1235         return "";
1236 }
1237
1238 const char* userrec::GetIPString(char* buf)
1239 {
1240         static char temp[1024];
1241
1242         if (this->ip == NULL)
1243         {
1244                 *buf = 0;
1245                 return buf;
1246         }
1247
1248         switch (this->GetProtocolFamily())
1249         {
1250 #ifdef SUPPORT_IP6LINKS
1251                 case AF_INET6:
1252                 {
1253                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1254                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1255                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1256                         if (*buf == ':')
1257                         {
1258                                 strlcpy(&temp[1], buf, sizeof(temp));
1259                                 *temp = '0';
1260                                 strlcpy(buf, temp, sizeof(temp));
1261                         }
1262                         return buf;
1263                 }
1264                 break;
1265 #endif
1266                 case AF_INET:
1267                 {
1268                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1269                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1270                         return buf;
1271                 }
1272                 break;
1273
1274                 default:
1275                         log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1276                 break;
1277         }
1278         return "";
1279 }
1280
1281
1282 void userrec::Write(const std::string &text)
1283 {
1284         if ((this->fd < 0) || (this->fd > MAX_DESCRIPTORS))
1285                 return;
1286
1287         std::string crlf = text;
1288         crlf.append("\r\n");
1289
1290         if (Config->GetIOHook(this->GetPort()))
1291         {
1292                 try
1293                 {
1294                         Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, crlf.data(), crlf.length());
1295                 }
1296                 catch (ModuleException& modexcept)
1297                 {
1298                         log(DEBUG,"Module exception caught: %s",modexcept.GetReason());
1299                 }
1300         }
1301         else
1302         {
1303                 this->AddWriteBuf(crlf);
1304         }
1305         ServerInstance->stats->statsSent += crlf.length();
1306 }
1307
1308 /** Write()
1309  */
1310 void userrec::Write(const char *text, ...)
1311 {
1312         va_list argsPtr;
1313         char textbuffer[MAXBUF];
1314
1315         va_start(argsPtr, text);
1316         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1317         va_end(argsPtr);
1318
1319         this->Write(std::string(textbuffer));
1320 }
1321
1322 void userrec::WriteServ(const std::string& text)
1323 {
1324         char textbuffer[MAXBUF];
1325
1326         snprintf(textbuffer,MAXBUF,":%s %s",Config->ServerName,text.c_str());
1327         this->Write(std::string(textbuffer));
1328 }
1329
1330 /** WriteServ()
1331  *  Same as Write(), except `text' is prefixed with `:server.name '.
1332  */
1333 void userrec::WriteServ(const char* text, ...)
1334 {
1335         va_list argsPtr;
1336         char textbuffer[MAXBUF];
1337
1338         va_start(argsPtr, text);
1339         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1340         va_end(argsPtr);
1341
1342         this->WriteServ(std::string(textbuffer));
1343 }
1344
1345
1346 void userrec::WriteFrom(userrec *user, const std::string &text)
1347 {
1348         char tb[MAXBUF];
1349
1350         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1351
1352         this->Write(std::string(tb));
1353 }
1354
1355
1356 /* write text from an originating user to originating user */
1357
1358 void userrec::WriteFrom(userrec *user, const char* text, ...)
1359 {
1360         va_list argsPtr;
1361         char textbuffer[MAXBUF];
1362
1363         va_start(argsPtr, text);
1364         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1365         va_end(argsPtr);
1366
1367         this->WriteFrom(user, std::string(textbuffer));
1368 }
1369
1370
1371 /* write text to an destination user from a source user (e.g. user privmsg) */
1372
1373 void userrec::WriteTo(userrec *dest, const char *data, ...)
1374 {
1375         char textbuffer[MAXBUF];
1376         va_list argsPtr;
1377
1378         va_start(argsPtr, data);
1379         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1380         va_end(argsPtr);
1381
1382         this->WriteTo(dest, std::string(textbuffer));
1383 }
1384
1385 void userrec::WriteTo(userrec *dest, const std::string &data)
1386 {
1387         dest->WriteFrom(this, data);
1388 }
1389
1390
1391 void userrec::WriteCommon(const char* text, ...)
1392 {
1393         char textbuffer[MAXBUF];
1394         va_list argsPtr;
1395
1396         if (this->registered != REG_ALL)
1397                 return;
1398
1399         va_start(argsPtr, text);
1400         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1401         va_end(argsPtr);
1402
1403         this->WriteCommon(std::string(textbuffer));
1404 }
1405
1406 void userrec::WriteCommon(const std::string &text)
1407 {
1408         bool sent_to_at_least_one = false;
1409
1410         if (this->registered != REG_ALL)
1411                 return;
1412
1413         uniq_id++;
1414
1415         for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1416         {
1417                 ucrec *n = *v;
1418                 if (n->channel)
1419                 {
1420                         CUList *ulist= n->channel->GetUsers();
1421
1422                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1423                         {
1424                                 if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1425                                 {
1426                                         already_sent[i->second->fd] = uniq_id;
1427                                         i->second->WriteFrom(this, std::string(text));
1428                                         sent_to_at_least_one = true;
1429                                 }
1430                         }
1431                 }
1432         }
1433
1434         /*
1435          * if the user was not in any channels, no users will receive the text. Make sure the user
1436          * receives their OWN message for WriteCommon
1437          */
1438         if (!sent_to_at_least_one)
1439         {
1440                 this->WriteFrom(this,std::string(text));
1441         }
1442 }
1443
1444
1445 /* write a formatted string to all users who share at least one common
1446  * channel, NOT including the source user e.g. for use in QUIT
1447  */
1448
1449 void userrec::WriteCommonExcept(const char* text, ...)
1450 {
1451         char textbuffer[MAXBUF];
1452         va_list argsPtr;
1453
1454         va_start(argsPtr, text);
1455         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1456         va_end(argsPtr);
1457
1458         this->WriteCommonExcept(std::string(textbuffer));
1459 }
1460
1461 void userrec::WriteCommonExcept(const std::string &text)
1462 {
1463         bool quit_munge = true;
1464         char oper_quit[MAXBUF];
1465         char textbuffer[MAXBUF];
1466
1467         strlcpy(textbuffer, text.c_str(), MAXBUF);
1468
1469         if (this->registered != REG_ALL)
1470                 return;
1471
1472         uniq_id++;
1473
1474         /* TODO: We need some form of WriteCommonExcept that will send two lines, one line to
1475          * opers and the other line to non-opers, then all this hidebans and hidesplits gunk
1476          * can go byebye.
1477          */
1478         if (Config->HideSplits)
1479         {
1480                 char* check = textbuffer + 6;
1481
1482                 if (!strncasecmp(textbuffer, "QUIT :",6))
1483                 {
1484                         std::stringstream split(check);
1485                         std::string server_one;
1486                         std::string server_two;
1487
1488                         split >> server_one;
1489                         split >> server_two;
1490
1491                         if ((FindServerName(server_one)) && (FindServerName(server_two)))
1492                         {
1493                                 strlcpy(oper_quit,textbuffer,MAXQUIT);
1494                                 strlcpy(check,"*.net *.split",MAXQUIT);
1495                                 quit_munge = true;
1496                         }
1497                 }
1498         }
1499
1500         if ((Config->HideBans) && (!quit_munge))
1501         {
1502                 if ((!strncasecmp(textbuffer, "QUIT :G-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :K-Lined:",14))
1503                 || (!strncasecmp(textbuffer, "QUIT :Q-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :Z-Lined:",14)))
1504                 {
1505                         char* check = textbuffer + 13;
1506                         strlcpy(oper_quit,textbuffer,MAXQUIT);
1507                         *check = 0;  // We don't need to strlcpy, we just chop it from the :
1508                         quit_munge = true;
1509                 }
1510         }
1511
1512         for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1513         {
1514                 ucrec* n = *v;
1515                 if (n->channel)
1516                 {
1517                         CUList *ulist= n->channel->GetUsers();
1518
1519                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1520                         {
1521                                 if (this != i->second)
1522                                 {
1523                                         if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1524                                         {
1525                                                 already_sent[i->second->fd] = uniq_id;
1526                                                 if (quit_munge)
1527                                                         i->second->WriteFrom(this, *i->second->oper ? std::string(oper_quit) : std::string(textbuffer));
1528                                                 else
1529                                                         i->second->WriteFrom(this, std::string(textbuffer));
1530                                         }
1531                                 }
1532                         }
1533                 }
1534         }
1535
1536 }
1537
1538 void userrec::WriteWallOps(const std::string &text)
1539 {
1540         /* Does nothing if theyre not opered */
1541         if ((!*this->oper) && (IS_LOCAL(this)))
1542                 return;
1543
1544         std::string wallop = "WALLOPS :";
1545         wallop.append(text);
1546
1547         for (std::vector<userrec*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
1548         {
1549                 userrec* t = *i;
1550                 if ((IS_LOCAL(t)) && (t->modes[UM_WALLOPS]))
1551                         this->WriteTo(t,wallop);
1552         }
1553 }
1554
1555 void userrec::WriteWallOps(const char* text, ...)
1556 {
1557         char textbuffer[MAXBUF];
1558         va_list argsPtr;
1559
1560         va_start(argsPtr, text);
1561         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1562         va_end(argsPtr);
1563
1564         this->WriteWallOps(std::string(textbuffer));
1565 }
1566
1567 /* return 0 or 1 depending if users u and u2 share one or more common channels
1568  * (used by QUIT, NICK etc which arent channel specific notices)
1569  *
1570  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1571  * the first users channels then the second users channels within the outer loop,
1572  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1573  * all possible iterations). However this new function instead checks against the
1574  * channel's userlist in the inner loop which is a std::map<userrec*,userrec*>
1575  * and saves us time as we already know what pointer value we are after.
1576  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1577  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1578  */
1579 bool userrec::SharesChannelWith(userrec *other)
1580 {
1581         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1582                 return false;
1583
1584         /* Outer loop */
1585         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1586         {
1587                 /* Fetch the channel from the user */
1588                 ucrec* user_channel = *i;
1589
1590                 if (user_channel->channel)
1591                 {
1592                         /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1593                          * by replacing it with a map::find which *should* be more efficient
1594                          */
1595                         if (user_channel->channel->HasUser(other))
1596                                 return true;
1597                 }
1598         }
1599         return false;
1600 }
1601
1602 int userrec::CountChannels()
1603 {
1604         int z = 0;
1605         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1606                 if ((*i)->channel)
1607                         z++;
1608         return z;
1609 }
1610
1611 bool userrec::ChangeName(const char* gecos)
1612 {
1613         if (IS_LOCAL(this))
1614         {
1615                 int MOD_RESULT = 0;
1616                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1617                 if (MOD_RESULT)
1618                         return false;
1619                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1620         }
1621         strlcpy(this->fullname,gecos,MAXGECOS+1);
1622         return true;
1623 }
1624
1625 bool userrec::ChangeDisplayedHost(const char* host)
1626 {
1627         if (IS_LOCAL(this))
1628         {
1629                 int MOD_RESULT = 0;
1630                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host));
1631                 if (MOD_RESULT)
1632                         return false;
1633                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host));
1634         }
1635         strlcpy(this->dhost,host,63);
1636
1637         if (IS_LOCAL(this))
1638                 this->WriteServ("396 %s %s :is now your hidden host",this->nick,this->dhost);
1639
1640         return true;
1641 }
1642