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 "configreader.h"
  18 #include "channels.h"
  19 #include "users.h"
  20 #include "inspircd.h"
  21 #include <stdarg.h>
  22 #include "socketengine.h"
  23 #include "wildcard.h"
  24 #include "xline.h"
  25 #include "cull_list.h"
  26
  27 irc::whowas::whowas_users whowas;
  28 static unsigned long already_sent[MAX_DESCRIPTORS] = {0};
  29
  30 typedef std::map<irc::string,char*> opertype_t;
  31 typedef opertype_t operclass_t;
  32
  33 opertype_t opertypes;
  34 operclass_t operclass;
  35
  36 /* XXX: Used for speeding up WriteCommon operations */
  37 unsigned long uniq_id = 0;
  38
  39 bool InitTypes(ServerConfig* conf, const char* tag)
  40 {
  41         for (opertype_t::iterator n = opertypes.begin(); n != opertypes.end(); n++)
  42         {
  43                 if (n->second)
  44                         delete[] n->second;
  45         }
  46
  47         opertypes.clear();
  48         return true;
  49 }
  50
  51 bool InitClasses(ServerConfig* conf, const char* tag)
  52 {
  53         for (operclass_t::iterator n = operclass.begin(); n != operclass.end(); n++)
  54         {
  55                 if (n->second)
  56                         delete[] n->second;
  57         }
  58
  59         operclass.clear();
  60         return true;
  61 }
  62
  63 bool DoType(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
  64 {
  65         char* TypeName = (char*)values[0];
  66         char* Classes = (char*)values[1];
  67
  68         opertypes[TypeName] = strdup(Classes);
  69         conf->GetInstance()->Log(DEBUG,"Read oper TYPE '%s' with classes '%s'",TypeName,Classes);
  70         return true;
  71 }
  72
  73 bool DoClass(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
  74 {
  75         char* ClassName = (char*)values[0];
  76         char* CommandList = (char*)values[1];
  77
  78         operclass[ClassName] = strdup(CommandList);
  79         conf->GetInstance()->Log(DEBUG,"Read oper CLASS '%s' with commands '%s'",ClassName,CommandList);
  80         return true;
  81 }
  82
  83 bool DoneClassesAndTypes(ServerConfig* conf, const char* tag)
  84 {
  85         return true;
  86 }
  87
  88 std::string userrec::ProcessNoticeMasks(const char *sm)
  89 {
  90         bool adding = true, oldadding = false;
  91         const char *c = sm;
  92         std::string output = "";
  93
  94         ServerInstance->Log(DEBUG,"Process notice masks");
  95
  96         while (c && *c)
  97         {
  98                 ServerInstance->Log(DEBUG,"Process notice mask %c",*c);
  99
 100                 switch (*c)
 101                 {
 102                         case '+':
 103                                 adding = true;
 104                         break;
 105                         case '-':
 106                                 adding = false;
 107                         break;
 108                         default:
 109                                 if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c)))
 110                                 {
 111                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
 112                                         {
 113                                                 if ((oldadding != adding) || (!output.length()))
 114                                                         output += (adding ? '+' : '-');
 115
 116                                                 this->SetNoticeMask(*c, adding);
 117
 118                                                 output += *c;
 119                                         }
 120                                 }
 121                                 oldadding = adding;
 122                         break;
 123                 }
 124
 125                 *c++;
 126         }
 127
 128         return output;
 129 }
 130
 131 void userrec::StartDNSLookup()
 132 {
 133         ServerInstance->Log(DEBUG,"Commencing reverse lookup");
 134         try
 135         {
 136                 ServerInstance->Log(DEBUG,"Passing instance: %08x",this->ServerInstance);
 137                 res_reverse = new UserResolver(this->ServerInstance, this, this->GetIPString(), false);
 138                 this->ServerInstance->AddResolver(res_reverse);
 139         }
 140         catch (ModuleException& e)
 141         {
 142                 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
 143         }
 144 }
 145
 146 UserResolver::UserResolver(InspIRCd* Instance, userrec* user, std::string to_resolve, bool forward) :
 147         Resolver(Instance, to_resolve, forward ? DNS_QUERY_FORWARD : DNS_QUERY_REVERSE), bound_user(user)
 148 {
 149         this->fwd = forward;
 150         this->bound_fd = user->GetFd();
 151 }
 152
 153 void UserResolver::OnLookupComplete(const std::string &result)
 154 {
 155         if ((!this->fwd) && (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user))
 156         {
 157                 ServerInstance->Log(DEBUG,"Commencing forward lookup");
 158                 this->bound_user->stored_host = result;
 159                 try
 160                 {
 161                         /* Check we didnt time out */
 162                         if (this->bound_user->registered != REG_ALL)
 163                         {
 164                                 bound_user->res_forward = new UserResolver(this->ServerInstance, this->bound_user, result, true);
 165                                 this->ServerInstance->AddResolver(bound_user->res_forward);
 166                         }
 167                 }
 168                 catch (ModuleException& e)
 169                 {
 170                         ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
 171                 }
 172         }
 173         else if ((this->fwd) && (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user))
 174         {
 175                 /* Both lookups completed */
 176                 if (this->bound_user->GetIPString() == result)
 177                 {
 178                         std::string hostname = this->bound_user->stored_host;
 179                         if (hostname.length() < 65)
 180                         {
 181                                 /* Check we didnt time out */
 182                                 if (this->bound_user->registered != REG_ALL)
 183                                 {
 184                                         /* Hostnames starting with : are not a good thing (tm) */
 185                                         if (*(hostname.c_str()) == ':')
 186                                                 hostname = "0" + hostname;
 187
 188                                         this->bound_user->WriteServ("NOTICE Auth :*** Found your hostname (%s)", hostname.c_str());
 189                                         this->bound_user->dns_done = true;
 190                                         strlcpy(this->bound_user->dhost, hostname.c_str(),64);
 191                                         strlcpy(this->bound_user->host, hostname.c_str(),64);
 192                                 }
 193                         }
 194                         else
 195                         {
 196                                 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());
 197                         }
 198                 }
 199                 else
 200                 {
 201                         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());
 202                 }
 203         }
 204 }
 205
 206 void UserResolver::OnError(ResolverError e, const std::string &errormessage)
 207 {
 208         if (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user)
 209         {
 210                 /* Error message here */
 211                 this->bound_user->WriteServ("NOTICE Auth :*** Could not resolve your hostname, using your IP address (%s) instead.", this->bound_user->GetIPString());
 212                 this->bound_user->dns_done = true;
 213         }
 214 }
 215
 216
 217 bool userrec::IsNoticeMaskSet(unsigned char sm)
 218 {
 219         return (snomasks[sm-65]);
 220 }
 221
 222 void userrec::SetNoticeMask(unsigned char sm, bool value)
 223 {
 224         snomasks[sm-65] = value;
 225 }
 226
 227 const char* userrec::FormatNoticeMasks()
 228 {
 229         static char data[MAXBUF];
 230         int offset = 0;
 231
 232         for (int n = 0; n < 64; n++)
 233         {
 234                 if (snomasks[n])
 235                         data[offset++] = n+65;
 236         }
 237
 238         data[offset] = 0;
 239         return data;
 240 }
 241
 242
 243
 244 bool userrec::IsModeSet(unsigned char m)
 245 {
 246         return (modes[m-65]);
 247 }
 248
 249 void userrec::SetMode(unsigned char m, bool value)
 250 {
 251         modes[m-65] = value;
 252 }
 253
 254 const char* userrec::FormatModes()
 255 {
 256         static char data[MAXBUF];
 257         int offset = 0;
 258         for (int n = 0; n < 64; n++)
 259         {
 260                 if (modes[n])
 261                         data[offset++] = n+65;
 262         }
 263         data[offset] = 0;
 264         return data;
 265 }
 266
 267 userrec::userrec(InspIRCd* Instance) : ServerInstance(Instance)
 268 {
 269         ServerInstance->Log(DEBUG,"userrec::userrec(): Instance: %08x",ServerInstance);
 270         // the PROPER way to do it, AVOID bzero at *ALL* costs
 271         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = 0;
 272         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 273         reset_due = ServerInstance->Time();
 274         lines_in = lastping = signon = idle_lastmsg = nping = registered = 0;
 275         ChannelCount = timeout = flood = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 276         haspassed = dns_done = false;
 277         fd = -1;
 278         recvq = "";
 279         sendq = "";
 280         WriteError = "";
 281         res_forward = res_reverse = NULL;
 282         ip = NULL;
 283         chans.clear();
 284         invites.clear();
 285         chans.resize(MAXCHANS);
 286         memset(modes,0,sizeof(modes));
 287         memset(snomasks,0,sizeof(snomasks));
 288
 289         for (unsigned int n = 0; n < MAXCHANS; n++)
 290         {
 291                 ucrec* x = new ucrec();
 292                 chans[n] = x;
 293                 x->channel = NULL;
 294                 x->uc_modes = 0;
 295         }
 296 }
 297
 298 userrec::~userrec()
 299 {
 300         for (std::vector<ucrec*>::iterator n = chans.begin(); n != chans.end(); n++)
 301         {
 302                 ucrec* x = (ucrec*)*n;
 303                 delete x;
 304         }
 305
 306         if (ip)
 307         {
 308                 if (this->GetProtocolFamily() == AF_INET)
 309                 {
 310                         delete (sockaddr_in*)ip;
 311                 }
 312 #ifdef SUPPORT_IP6LINKS
 313                 else
 314                 {
 315                         delete (sockaddr_in6*)ip;
 316                 }
 317 #endif
 318         }
 319 }
 320
 321 /* XXX - minor point, other *Host functions return a char *, this one creates it. Might be nice to be consistant? */
 322 void userrec::MakeHost(char* nhost)
 323 {
 324         /* This is much faster than snprintf */
 325         char* t = nhost;
 326         for(char* n = ident; *n; n++)
 327                 *t++ = *n;
 328         *t++ = '@';
 329         for(char* n = host; *n; n++)
 330                 *t++ = *n;
 331         *t = 0;
 332 }
 333
 334 void userrec::CloseSocket()
 335 {
 336         shutdown(this->fd,2);
 337         close(this->fd);
 338 }
 339
 340 char* userrec::GetFullHost()
 341 {
 342         static char result[MAXBUF];
 343         char* t = result;
 344         for(char* n = nick; *n; n++)
 345                 *t++ = *n;
 346         *t++ = '!';
 347         for(char* n = ident; *n; n++)
 348                 *t++ = *n;
 349         *t++ = '@';
 350         for(char* n = dhost; *n; n++)
 351                 *t++ = *n;
 352         *t = 0;
 353         return result;
 354 }
 355
 356 char* userrec::MakeWildHost()
 357 {
 358         static char nresult[MAXBUF];
 359         char* t = nresult;
 360         *t++ = '*';     *t++ = '!';
 361         *t++ = '*';     *t++ = '@';
 362         for(char* n = dhost; *n; n++)
 363                 *t++ = *n;
 364         *t = 0;
 365         return nresult;
 366 }
 367
 368 int userrec::ReadData(void* buffer, size_t size)
 369 {
 370         if (this->fd > -1)
 371         {
 372                 return read(this->fd, buffer, size);
 373         }
 374         else
 375                 return 0;
 376 }
 377
 378
 379 char* userrec::GetFullRealHost()
 380 {
 381         static char fresult[MAXBUF];
 382         char* t = fresult;
 383         for(char* n = nick; *n; n++)
 384                 *t++ = *n;
 385         *t++ = '!';
 386         for(char* n = ident; *n; n++)
 387                 *t++ = *n;
 388         *t++ = '@';
 389         for(char* n = host; *n; n++)
 390                 *t++ = *n;
 391         *t = 0;
 392         return fresult;
 393 }
 394
 395 bool userrec::IsInvited(irc::string &channel)
 396 {
 397         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 398         {
 399                 irc::string compare = i->channel;
 400
 401                 if (compare == channel)
 402                 {
 403                         return true;
 404                 }
 405         }
 406         return false;
 407 }
 408
 409 InvitedList* userrec::GetInviteList()
 410 {
 411         return &invites;
 412 }
 413
 414 void userrec::InviteTo(irc::string &channel)
 415 {
 416         Invited i;
 417         i.channel = channel;
 418         invites.push_back(i);
 419 }
 420
 421 void userrec::RemoveInvite(irc::string &channel)
 422 {
 423         ServerInstance->Log(DEBUG,"Removing invites");
 424
 425         if (invites.size())
 426         {
 427                 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 428                 {
 429                         irc::string compare = i->channel;
 430
 431                         if (compare == channel)
 432                         {
 433                                 invites.erase(i);
 434                                 return;
 435                         }
 436                 }
 437         }
 438 }
 439
 440 bool userrec::HasPermission(const std::string &command)
 441 {
 442         char* mycmd;
 443         char* savept;
 444         char* savept2;
 445
 446         /*
 447          * users on remote servers can completely bypass all permissions based checks.
 448          * This prevents desyncs when one server has different type/class tags to another.
 449          * That having been said, this does open things up to the possibility of source changes
 450          * allowing remote kills, etc - but if they have access to the src, they most likely have
 451          * access to the conf - so it's an end to a means either way.
 452          */
 453         if (!IS_LOCAL(this))
 454                 return true;
 455
 456         // are they even an oper at all?
 457         if (*this->oper)
 458         {
 459                 opertype_t::iterator iter_opertype = opertypes.find(this->oper);
 460                 if (iter_opertype != opertypes.end())
 461                 {
 462                         char* Classes = strdup(iter_opertype->second);
 463                         char* myclass = strtok_r(Classes," ",&savept);
 464                         while (myclass)
 465                         {
 466                                 operclass_t::iterator iter_operclass = operclass.find(myclass);
 467                                 if (iter_operclass != operclass.end())
 468                                 {
 469                                         char* CommandList = strdup(iter_operclass->second);
 470                                         mycmd = strtok_r(CommandList," ",&savept2);
 471                                         while (mycmd)
 472                                         {
 473                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 474                                                 {
 475                                                         free(Classes);
 476                                                         free(CommandList);
 477                                                         return true;
 478                                                 }
 479                                                 mycmd = strtok_r(NULL," ",&savept2);
 480                                         }
 481                                         free(CommandList);
 482                                 }
 483                                 myclass = strtok_r(NULL," ",&savept);
 484                         }
 485                         free(Classes);
 486                 }
 487         }
 488         return false;
 489 }
 490
 491 /** NOTE: We cannot pass a const reference to this method.
 492  * The string is changed by the workings of the method,
 493  * so that if we pass const ref, we end up copying it to
 494  * something we can change anyway. Makes sense to just let
 495  * the compiler do that copy for us.
 496  */
 497 bool userrec::AddBuffer(std::string a)
 498 {
 499         std::string::size_type i = a.rfind('\r');
 500
 501         while (i != std::string::npos)
 502         {
 503                 a.erase(i, 1);
 504                 i = a.rfind('\r');
 505         }
 506
 507         if (a.length())
 508                 recvq.append(a);
 509
 510         if (recvq.length() > (unsigned)this->recvqmax)
 511         {
 512                 this->SetWriteError("RecvQ exceeded");
 513                 ServerInstance->WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 514                 return false;
 515         }
 516
 517         return true;
 518 }
 519
 520 bool userrec::BufferIsReady()
 521 {
 522         return (recvq.find('\n') != std::string::npos);
 523 }
 524
 525 void userrec::ClearBuffer()
 526 {
 527         recvq = "";
 528 }
 529
 530 std::string userrec::GetBuffer()
 531 {
 532         if (!recvq.length())
 533                 return "";
 534
 535         /* Strip any leading \r or \n off the string.
 536          * Usually there are only one or two of these,
 537          * so its is computationally cheap to do.
 538          */
 539         while ((*recvq.begin() == '\r') || (*recvq.begin() == '\n'))
 540                 recvq.erase(recvq.begin());
 541
 542         for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 543         {
 544                 /* Find the first complete line, return it as the
 545                  * result, and leave the recvq as whats left
 546                  */
 547                 if (*x == '\n')
 548                 {
 549                         std::string ret = std::string(recvq.begin(), x);
 550                         recvq.erase(recvq.begin(), x + 1);
 551                         return ret;
 552                 }
 553         }
 554         return "";
 555 }
 556
 557 void userrec::AddWriteBuf(const std::string &data)
 558 {
 559         if (*this->GetWriteError())
 560                 return;
 561
 562         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 563         {
 564                 /*
 565                  * Fix by brain - Set the error text BEFORE calling writeopers, because
 566                  * if we dont it'll recursively  call here over and over again trying
 567                  * to repeatedly add the text to the sendq!
 568                  */
 569                 this->SetWriteError("SendQ exceeded");
 570                 ServerInstance->WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 571                 return;
 572         }
 573
 574         if (data.length() > 512)
 575         {
 576                 std::string newdata(data);
 577                 newdata.resize(510);
 578                 newdata.append("\r\n");
 579                 sendq.append(newdata);
 580         }
 581         else
 582         {
 583                 sendq.append(data);
 584         }
 585 }
 586
 587 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 588 void userrec::FlushWriteBuf()
 589 {
 590         if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 591         {
 592                 const char* tb = this->sendq.c_str();
 593                 int n_sent = write(this->fd,tb,this->sendq.length());
 594                 if (n_sent == -1)
 595                 {
 596                         if (errno != EAGAIN)
 597                                 this->SetWriteError(strerror(errno));
 598                 }
 599                 else
 600                 {
 601                         // advance the queue
 602                         tb += n_sent;
 603                         this->sendq = tb;
 604                         // update the user's stats counters
 605                         this->bytes_out += n_sent;
 606                         this->cmds_out++;
 607                 }
 608         }
 609 }
 610
 611 void userrec::SetWriteError(const std::string &error)
 612 {
 613         ServerInstance->Log(DEBUG,"SetWriteError: %s",error.c_str());
 614         // don't try to set the error twice, its already set take the first string.
 615         if (!this->WriteError.length())
 616         {
 617                 ServerInstance->Log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 618                 this->WriteError = error;
 619         }
 620 }
 621
 622 const char* userrec::GetWriteError()
 623 {
 624         return this->WriteError.c_str();
 625 }
 626
 627 void userrec::Oper(const std::string &opertype)
 628 {
 629         this->modes[UM_OPERATOR] = 1;
 630         this->WriteServ("MODE %s :+o", this->nick);
 631         FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 632         ServerInstance->Log(DEFAULT,"OPER: %s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 633         strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 634         ServerInstance->all_opers.push_back(this);
 635         FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype));
 636 }
 637
 638 void userrec::UnOper()
 639 {
 640         if (*this->oper)
 641         {
 642                 *this->oper = 0;
 643                 this->modes[UM_OPERATOR] = 0;
 644                 for (std::vector<userrec*>::iterator a = ServerInstance->all_opers.begin(); a < ServerInstance->all_opers.end(); a++)
 645                 {
 646                         if (*a == this)
 647                         {
 648                                 ServerInstance->Log(DEBUG,"Oper removed from optimization list");
 649                                 ServerInstance->all_opers.erase(a);
 650                                 return;
 651                         }
 652                 }
 653         }
 654 }
 655
 656 void userrec::QuitUser(InspIRCd* Instance, userrec *user,const std::string &quitreason)
 657 {
 658         user_hash::iterator iter = Instance->clientlist.find(user->nick);
 659
 660 /*
 661  * I'm pretty sure returning here is causing a desync when part of the net thinks a user is gone,
 662  * and another part doesn't. We want to broadcast the quit/kill before bailing so the net stays in sync.
 663  *
 664  * I can't imagine this blowing up, so I'm commenting it out. We still check
 665  * before playing with a bad iterator below in our if(). DISCUSS THIS BEFORE YOU DO ANYTHING. --w00t
 666  *
 667  *      if (iter == clientlist.end())
 668  *              return;
 669  */
 670         std::string reason = quitreason;
 671
 672         if (reason.length() > MAXQUIT - 1)
 673                 reason.resize(MAXQUIT - 1);
 674
 675         if (IS_LOCAL(user))
 676                 user->Write("ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason.c_str());
 677
 678         if (user->registered == REG_ALL)
 679         {
 680                 user->PurgeEmptyChannels();
 681                 FOREACH_MOD_I(Instance,I_OnUserQuit,OnUserQuit(user,reason));
 682                 user->WriteCommonExcept("QUIT :%s",reason.c_str());
 683         }
 684
 685         if (IS_LOCAL(user))
 686                 user->FlushWriteBuf();
 687
 688         FOREACH_MOD_I(Instance,I_OnUserDisconnect,OnUserDisconnect(user));
 689
 690         if (IS_LOCAL(user))
 691         {
 692                 if (Instance->Config->GetIOHook(user->GetPort()))
 693                 {
 694                         try
 695                         {
 696                                 Instance->Config->GetIOHook(user->GetPort())->OnRawSocketClose(user->fd);
 697                         }
 698                         catch (ModuleException& modexcept)
 699                         {
 700                                 Instance->Log(DEBUG,"Module exception cought: %s",modexcept.GetReason());
 701                         }
 702                 }
 703
 704                 Instance->SE->DelFd(user);
 705                 user->CloseSocket();
 706         }
 707
 708         /*
 709          * this must come before the ServerInstance->SNO->WriteToSnoMaskso that it doesnt try to fill their buffer with anything
 710          * if they were an oper with +sn +qQ.
 711          */
 712         if (user->registered == REG_ALL)
 713         {
 714                 if (IS_LOCAL(user))
 715                         Instance->SNO->WriteToSnoMask('q',"Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason.c_str());
 716                 else
 717                         Instance->SNO->WriteToSnoMask('Q',"Client exiting on server %s: %s!%s@%s [%s]",user->server,user->nick,user->ident,user->host,reason.c_str());
 718                 user->AddToWhoWas();
 719         }
 720
 721         if (iter != Instance->clientlist.end())
 722         {
 723                 Instance->Log(DEBUG,"deleting user hash value %lx",(unsigned long)user);
 724                 if (IS_LOCAL(user))
 725                 {
 726                         if (find(Instance->local_users.begin(),Instance->local_users.end(),user) != Instance->local_users.end())
 727                                 Instance->local_users.erase(find(Instance->local_users.begin(),Instance->local_users.end(),user));
 728                 }
 729                 Instance->clientlist.erase(iter);
 730                 DELETE(user);
 731         }
 732 }
 733
 734 namespace irc
 735 {
 736         namespace whowas
 737         {
 738
 739                 WhoWasGroup::WhoWasGroup(userrec* user) : host(NULL), dhost(NULL), ident(NULL), server(NULL), gecos(NULL), signon(user->signon)
 740                 {
 741                         this->host = strdup(user->host);
 742                         this->dhost = strdup(user->dhost);
 743                         this->ident = strdup(user->ident);
 744                         this->server = user->server;
 745                         this->gecos = strdup(user->fullname);
 746                 }
 747
 748                 WhoWasGroup::~WhoWasGroup()
 749                 {
 750                         if (host)
 751                                 free(host);
 752                         if (dhost)
 753                                 free(dhost);
 754                         if (ident)
 755                                 free(ident);
 756                         if (gecos)
 757                                 free(gecos);
 758                 }
 759
 760                 /* every hour, run this function which removes all entries over 3 days */
 761                 void MaintainWhoWas(time_t t)
 762                 {
 763                         for (whowas_users::iterator iter = ::whowas.begin(); iter != ::whowas.end(); iter++)
 764                         {
 765                                 whowas_set* n = (whowas_set*)iter->second;
 766                                 if (n->size())
 767                                 {
 768                                         while ((n->begin() != n->end()) && ((*n->begin())->signon < t - 259200)) // 3 days
 769                                         {
 770                                                 WhoWasGroup *a = *(n->begin());
 771                                                 DELETE(a);
 772                                                 n->erase(n->begin());
 773                                         }
 774                                 }
 775                         }
 776                 }
 777         };
 778 };
 779
 780 /* adds or updates an entry in the whowas list */
 781 void userrec::AddToWhoWas()
 782 {
 783         irc::whowas::whowas_users::iterator iter = whowas.find(this->nick);
 784
 785         if (iter == whowas.end())
 786         {
 787                 irc::whowas::whowas_set* n = new irc::whowas::whowas_set;
 788                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 789                 n->push_back(a);
 790                 whowas[this->nick] = n;
 791         }
 792         else
 793         {
 794                 irc::whowas::whowas_set* group = (irc::whowas::whowas_set*)iter->second;
 795
 796                 if (group->size() > 10)
 797                 {
 798                         irc::whowas::WhoWasGroup *a = (irc::whowas::WhoWasGroup*)*(group->begin());
 799                         DELETE(a);
 800                         group->pop_front();
 801                 }
 802
 803                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 804                 group->push_back(a);
 805         }
 806 }
 807
 808 /* add a client connection to the sockets list */
 809 void userrec::AddClient(InspIRCd* Instance, int socket, int port, bool iscached, insp_inaddr ip)
 810 {
 811         std::string tempnick = ConvToStr(socket) + "-unknown";
 812         user_hash::iterator iter = Instance->clientlist.find(tempnick);
 813         const char *ipaddr = insp_ntoa(ip);
 814         userrec* _new;
 815         int j = 0;
 816
 817         /*
 818          * fix by brain.
 819          * as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 820          * using one as a registered connection. As they are per fd, we can also safely assume
 821          * that we wont have collisions. Therefore, if the nick exists in the list, its only
 822          * used by a dead socket, erase the iterator so that the new client may reclaim it.
 823          * this was probably the cause of 'server ignores me when i hammer it with reconnects'
 824          * issue in earlier alphas/betas
 825          */
 826         if (iter != Instance->clientlist.end())
 827         {
 828                 userrec* goner = iter->second;
 829                 DELETE(goner);
 830                 Instance->clientlist.erase(iter);
 831         }
 832
 833         Instance->Log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr);
 834
 835         _new = new userrec(Instance);
 836         Instance->clientlist[tempnick] = _new;
 837         _new->fd = socket;
 838         strlcpy(_new->nick,tempnick.c_str(),NICKMAX-1);
 839
 840         _new->server = Instance->FindServerNamePtr(Instance->Config->ServerName);
 841         /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
 842         strcpy(_new->ident, "unknown");
 843
 844         _new->registered = REG_NONE;
 845         _new->signon = Instance->Time() + Instance->Config->dns_timeout;
 846         _new->lastping = 1;
 847
 848         Instance->Log(DEBUG,"Setting socket addresses");
 849         _new->SetSockAddr(AF_FAMILY, ipaddr, port);
 850         Instance->Log(DEBUG,"Socket addresses set.");
 851
 852         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
 853         for (const char* temp = _new->GetIPString(); *temp && j < 64; temp++, j++)
 854                 _new->dhost[j] = _new->host[j] = *temp;
 855         _new->dhost[j] = _new->host[j] = 0;
 856
 857         // set the registration timeout for this user
 858         unsigned long class_regtimeout = 90;
 859         int class_flood = 0;
 860         long class_threshold = 5;
 861         long class_sqmax = 262144;      // 256kb
 862         long class_rqmax = 4096;        // 4k
 863
 864         for (ClassVector::iterator i = Instance->Config->Classes.begin(); i != Instance->Config->Classes.end(); i++)
 865         {
 866                 if ((i->type == CC_ALLOW) && (match(ipaddr,i->host.c_str(),true)))
 867                 {
 868                         class_regtimeout = (unsigned long)i->registration_timeout;
 869                         class_flood = i->flood;
 870                         _new->pingmax = i->pingtime;
 871                         class_threshold = i->threshold;
 872                         class_sqmax = i->sendqmax;
 873                         class_rqmax = i->recvqmax;
 874                         break;
 875                 }
 876         }
 877
 878         _new->nping = Instance->Time() + _new->pingmax + Instance->Config->dns_timeout;
 879         _new->timeout = Instance->Time() + class_regtimeout;
 880         _new->flood = class_flood;
 881         _new->threshold = class_threshold;
 882         _new->sendqmax = class_sqmax;
 883         _new->recvqmax = class_rqmax;
 884
 885         Instance->local_users.push_back(_new);
 886
 887         if (Instance->local_users.size() > Instance->Config->SoftLimit)
 888         {
 889                 userrec::QuitUser(Instance, _new,"No more connections allowed");
 890                 return;
 891         }
 892
 893         if (Instance->local_users.size() >= MAXCLIENTS)
 894         {
 895                 userrec::QuitUser(Instance, _new,"No more connections allowed");
 896                 return;
 897         }
 898
 899         /*
 900          * XXX -
 901          * this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 902          * its a pretty big but for the moment valid assumption:
 903          * file descriptors are handed out starting at 0, and are recycled as theyre freed.
 904          * therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 905          * irc server at once (or the irc server otherwise initiating this many connections, files etc)
 906          * which for the time being is a physical impossibility (even the largest networks dont have more
 907          * than about 10,000 users on ONE server!)
 908          */
 909         if ((unsigned)socket >= MAX_DESCRIPTORS)
 910         {
 911                 userrec::QuitUser(Instance, _new,"Server is full");
 912                 return;
 913         }
 914         char* e = Instance->XLines->matches_exception(ipaddr);
 915         if (!e)
 916         {
 917                 char* r = Instance->XLines->matches_zline(ipaddr);
 918                 if (r)
 919                 {
 920                         char reason[MAXBUF];
 921                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
 922                         userrec::QuitUser(Instance, _new,reason);
 923                         return;
 924                 }
 925         }
 926
 927         if (socket > -1)
 928         {
 929                 if (!Instance->SE->AddFd(_new))
 930                 {
 931                         userrec::QuitUser(Instance, _new, "Internal error handling connection");
 932                         return;
 933                 }
 934         }
 935
 936         _new->WriteServ("NOTICE Auth :*** Looking up your hostname...");
 937 }
 938
 939 long userrec::GlobalCloneCount()
 940 {
 941         char u1[1024];
 942         char u2[1024];
 943         long x = 0;
 944         for (user_hash::const_iterator a = ServerInstance->clientlist.begin(); a != ServerInstance->clientlist.end(); a++)
 945         {
 946                 /* We have to match ip's as strings - we don't know what protocol
 947                  * a remote user may be using
 948                  */
 949                 if (!strcasecmp(a->second->GetIPString(u1), this->GetIPString(u2)))
 950                                 x++;
 951         }
 952         return x;
 953 }
 954
 955 long userrec::LocalCloneCount()
 956 {
 957         long x = 0;
 958         for (std::vector<userrec*>::const_iterator a = ServerInstance->local_users.begin(); a != ServerInstance->local_users.end(); a++)
 959         {
 960                 userrec* comp = *a;
 961 #ifdef IPV6
 962                 /* I dont think theres any faster way of matching two ipv6 addresses than memcmp */
 963                 in6_addr* s1 = &(((sockaddr_in6*)comp->ip)->sin6_addr);
 964                 in6_addr* s2 = &(((sockaddr_in6*)this->ip)->sin6_addr);
 965                 if (!memcmp(s1->s6_addr, s2->s6_addr, sizeof(in6_addr)))
 966                         x++;
 967 #else
 968                 in_addr* s1 = &((sockaddr_in*)comp->ip)->sin_addr;
 969                 in_addr* s2 = &((sockaddr_in*)this->ip)->sin_addr;
 970                 if (s1->s_addr == s2->s_addr)
 971                         x++;
 972 #endif
 973         }
 974         return x;
 975 }
 976
 977 void userrec::FullConnect(CullList* Goners)
 978 {
 979         ServerInstance->stats->statsConnects++;
 980         this->idle_lastmsg = ServerInstance->Time();
 981
 982         ConnectClass a = this->GetClass();
 983
 984         if (a.type == CC_DENY)
 985         {
 986                 Goners->AddItem(this,"Unauthorised connection");
 987                 return;
 988         }
 989
 990         if ((*(a.pass.c_str())) && (!this->haspassed))
 991         {
 992                 Goners->AddItem(this,"Invalid password");
 993                 return;
 994         }
 995
 996         if (this->LocalCloneCount() > a.maxlocal)
 997         {
 998                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (local)");
 999                 ServerInstance->WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a.maxlocal, this->GetIPString());
1000                 return;
1001         }
1002         else if (this->GlobalCloneCount() > a.maxglobal)
1003         {
1004                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (global)");
1005                 ServerInstance->WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a.maxglobal, this->GetIPString());
1006                 return;
1007         }
1008
1009         char match_against[MAXBUF];
1010         snprintf(match_against,MAXBUF,"%s@%s", this->ident, this->host);
1011         char* e = ServerInstance->XLines->matches_exception(match_against);
1012
1013         if (!e)
1014         {
1015                 char* r = ServerInstance->XLines->matches_gline(match_against);
1016
1017                 if (r)
1018                 {
1019                         char reason[MAXBUF];
1020                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
1021                         Goners->AddItem(this, reason);
1022                         return;
1023                 }
1024
1025                 r = ServerInstance->XLines->matches_kline(match_against);
1026
1027                 if (r)
1028                 {
1029                         char reason[MAXBUF];
1030                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
1031                         Goners->AddItem(this, reason);
1032                         return;
1033                 }
1034         }
1035
1036
1037         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
1038         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
1039         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
1040         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
1041         this->WriteServ("004 %s %s %s %s %s %s", this->nick, ServerInstance->Config->ServerName, VERSION, ServerInstance->Modes->UserModeList().c_str(), ServerInstance->Modes->ChannelModeList().c_str(), ServerInstance->Modes->ParaModeList().c_str());
1042
1043         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
1044         // so i'd better split it :)
1045         std::stringstream out(ServerInstance->Config->data005);
1046         std::string token = "";
1047         std::string line5 = "";
1048         int token_counter = 0;
1049
1050         while (!out.eof())
1051         {
1052                 out >> token;
1053                 line5 = line5 + token + " ";
1054                 token_counter++;
1055
1056                 if ((token_counter >= 13) || (out.eof() == true))
1057                 {
1058                         this->WriteServ("005 %s %s:are supported by this server", this->nick, line5.c_str());
1059                         line5 = "";
1060                         token_counter = 0;
1061                 }
1062         }
1063
1064         this->ShowMOTD();
1065
1066         /*
1067          * fix 3 by brain, move registered = 7 below these so that spurious modes and host
1068          * changes dont go out onto the network and produce 'fake direction'.
1069          */
1070         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
1071         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
1072         this->registered = REG_ALL;
1073         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString());
1074 }
1075
1076 /** userrec::UpdateNick()
1077  * re-allocates a nick in the user_hash after they change nicknames,
1078  * returns a pointer to the new user as it may have moved
1079  */
1080 userrec* userrec::UpdateNickHash(const char* New)
1081 {
1082         //user_hash::iterator newnick;
1083         user_hash::iterator oldnick = ServerInstance->clientlist.find(this->nick);
1084
1085         if (!strcasecmp(this->nick,New))
1086                 return oldnick->second;
1087
1088         if (oldnick == ServerInstance->clientlist.end())
1089                 return NULL; /* doesnt exist */
1090
1091         userrec* olduser = oldnick->second;
1092         ServerInstance->clientlist[New] = olduser;
1093         ServerInstance->clientlist.erase(oldnick);
1094         return ServerInstance->clientlist[New];
1095 }
1096
1097 bool userrec::ForceNickChange(const char* newnick)
1098 {
1099         char nick[MAXBUF];
1100         int MOD_RESULT = 0;
1101
1102         *nick = 0;
1103
1104         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1105
1106         if (MOD_RESULT)
1107         {
1108                 ServerInstance->stats->statsCollisions++;
1109                 return false;
1110         }
1111
1112         if (ServerInstance->XLines->matches_qline(newnick))
1113         {
1114                 ServerInstance->stats->statsCollisions++;
1115                 return false;
1116         }
1117
1118         if (newnick)
1119         {
1120                 strlcpy(this->nick, newnick, NICKMAX - 1);
1121         }
1122         if (this->registered == REG_ALL)
1123         {
1124                 const char* pars[1];
1125                 pars[0] = nick;
1126                 std::string cmd = "NICK";
1127                 ServerInstance->Parser->CallHandler(cmd, pars, 1, this);
1128         }
1129         return true;
1130 }
1131
1132 void userrec::SetSockAddr(int protocol_family, const char* ip, int port)
1133 {
1134         switch (protocol_family)
1135         {
1136 #ifdef SUPPORT_IP6LINKS
1137                 case AF_INET6:
1138                 {
1139                         ServerInstance->Log(DEBUG,"Set inet6 protocol address");
1140                         sockaddr_in6* sin = new sockaddr_in6;
1141                         sin->sin6_family = AF_INET6;
1142                         sin->sin6_port = port;
1143                         inet_pton(AF_INET6, ip, &sin->sin6_addr);
1144                         this->ip = (sockaddr*)sin;
1145                 }
1146                 break;
1147 #endif
1148                 case AF_INET:
1149                 {
1150                         ServerInstance->Log(DEBUG,"Set inet4 protocol address");
1151                         sockaddr_in* sin = new sockaddr_in;
1152                         sin->sin_family = AF_INET;
1153                         sin->sin_port = port;
1154                         inet_pton(AF_INET, ip, &sin->sin_addr);
1155                         this->ip = (sockaddr*)sin;
1156                 }
1157                 break;
1158                 default:
1159                         ServerInstance->Log(DEBUG,"Ut oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1160                 break;
1161         }
1162 }
1163
1164 int userrec::GetPort()
1165 {
1166         if (this->ip == NULL)
1167                 return 0;
1168
1169         switch (this->GetProtocolFamily())
1170         {
1171 #ifdef SUPPORT_IP6LINKS
1172                 case AF_INET6:
1173                 {
1174                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1175                         return sin->sin6_port;
1176                 }
1177                 break;
1178 #endif
1179                 case AF_INET:
1180                 {
1181                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1182                         return sin->sin_port;
1183                 }
1184                 break;
1185                 default:
1186                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1187                 break;
1188         }
1189         return 0;
1190 }
1191
1192 int userrec::GetProtocolFamily()
1193 {
1194         if (this->ip == NULL)
1195                 return 0;
1196
1197         sockaddr_in* sin = (sockaddr_in*)this->ip;
1198         return sin->sin_family;
1199 }
1200
1201 const char* userrec::GetIPString()
1202 {
1203         static char buf[1024];
1204
1205         if (this->ip == NULL)
1206                 return "";
1207
1208         switch (this->GetProtocolFamily())
1209         {
1210 #ifdef SUPPORT_IP6LINKS
1211                 case AF_INET6:
1212                 {
1213                         static char temp[1024];
1214
1215                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1216                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1217                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1218                         if (*buf == ':')
1219                         {
1220                                 strlcpy(&temp[1], buf, sizeof(temp));
1221                                 *temp = '0';
1222                                 return temp;
1223                         }
1224                         return buf;
1225                 }
1226                 break;
1227 #endif
1228                 case AF_INET:
1229                 {
1230                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1231                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1232                         return buf;
1233                 }
1234                 break;
1235                 default:
1236                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1237                 break;
1238         }
1239         return "";
1240 }
1241
1242 const char* userrec::GetIPString(char* buf)
1243 {
1244         if (this->ip == NULL)
1245         {
1246                 *buf = 0;
1247                 return buf;
1248         }
1249
1250         switch (this->GetProtocolFamily())
1251         {
1252 #ifdef SUPPORT_IP6LINKS
1253                 case AF_INET6:
1254                 {
1255                         static char temp[1024];
1256
1257                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1258                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1259                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1260                         if (*buf == ':')
1261                         {
1262                                 strlcpy(&temp[1], buf, sizeof(temp));
1263                                 *temp = '0';
1264                                 strlcpy(buf, temp, sizeof(temp));
1265                         }
1266                         return buf;
1267                 }
1268                 break;
1269 #endif
1270                 case AF_INET:
1271                 {
1272                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1273                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1274                         return buf;
1275                 }
1276                 break;
1277
1278                 default:
1279                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1280                 break;
1281         }
1282         return "";
1283 }
1284
1285 /** NOTE: We cannot pass a const reference to this method.
1286  * The string is changed by the workings of the method,
1287  * so that if we pass const ref, we end up copying it to
1288  * something we can change anyway. Makes sense to just let
1289  * the compiler do that copy for us.
1290  */
1291 void userrec::Write(std::string text)
1292 {
1293         if ((this->fd < 0) || (this->fd > MAX_DESCRIPTORS))
1294                 return;
1295
1296         text.append("\r\n");
1297
1298         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1299         {
1300                 try
1301                 {
1302                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length());
1303                 }
1304                 catch (ModuleException& modexcept)
1305                 {
1306                         ServerInstance->Log(DEBUG,"Module exception caught: %s",modexcept.GetReason());
1307                 }
1308         }
1309         else
1310         {
1311                 this->AddWriteBuf(text);
1312         }
1313         ServerInstance->stats->statsSent += text.length();
1314 }
1315
1316 /** Write()
1317  */
1318 void userrec::Write(const char *text, ...)
1319 {
1320         va_list argsPtr;
1321         char textbuffer[MAXBUF];
1322
1323         va_start(argsPtr, text);
1324         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1325         va_end(argsPtr);
1326
1327         this->Write(std::string(textbuffer));
1328 }
1329
1330 void userrec::WriteServ(const std::string& text)
1331 {
1332         char textbuffer[MAXBUF];
1333
1334         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1335         this->Write(std::string(textbuffer));
1336 }
1337
1338 /** WriteServ()
1339  *  Same as Write(), except `text' is prefixed with `:server.name '.
1340  */
1341 void userrec::WriteServ(const char* text, ...)
1342 {
1343         va_list argsPtr;
1344         char textbuffer[MAXBUF];
1345
1346         va_start(argsPtr, text);
1347         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1348         va_end(argsPtr);
1349
1350         this->WriteServ(std::string(textbuffer));
1351 }
1352
1353
1354 void userrec::WriteFrom(userrec *user, const std::string &text)
1355 {
1356         char tb[MAXBUF];
1357
1358         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1359
1360         this->Write(std::string(tb));
1361 }
1362
1363
1364 /* write text from an originating user to originating user */
1365
1366 void userrec::WriteFrom(userrec *user, const char* text, ...)
1367 {
1368         va_list argsPtr;
1369         char textbuffer[MAXBUF];
1370
1371         va_start(argsPtr, text);
1372         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1373         va_end(argsPtr);
1374
1375         this->WriteFrom(user, std::string(textbuffer));
1376 }
1377
1378
1379 /* write text to an destination user from a source user (e.g. user privmsg) */
1380
1381 void userrec::WriteTo(userrec *dest, const char *data, ...)
1382 {
1383         char textbuffer[MAXBUF];
1384         va_list argsPtr;
1385
1386         va_start(argsPtr, data);
1387         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1388         va_end(argsPtr);
1389
1390         this->WriteTo(dest, std::string(textbuffer));
1391 }
1392
1393 void userrec::WriteTo(userrec *dest, const std::string &data)
1394 {
1395         dest->WriteFrom(this, data);
1396 }
1397
1398
1399 void userrec::WriteCommon(const char* text, ...)
1400 {
1401         char textbuffer[MAXBUF];
1402         va_list argsPtr;
1403
1404         if (this->registered != REG_ALL)
1405                 return;
1406
1407         va_start(argsPtr, text);
1408         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1409         va_end(argsPtr);
1410
1411         this->WriteCommon(std::string(textbuffer));
1412 }
1413
1414 void userrec::WriteCommon(const std::string &text)
1415 {
1416         bool sent_to_at_least_one = false;
1417
1418         if (this->registered != REG_ALL)
1419                 return;
1420
1421         uniq_id++;
1422
1423         for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1424         {
1425                 ucrec *n = *v;
1426                 if (n->channel)
1427                 {
1428                         CUList *ulist= n->channel->GetUsers();
1429
1430                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1431                         {
1432                                 if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1433                                 {
1434                                         already_sent[i->second->fd] = uniq_id;
1435                                         i->second->WriteFrom(this, std::string(text));
1436                                         sent_to_at_least_one = true;
1437                                 }
1438                         }
1439                 }
1440         }
1441
1442         /*
1443          * if the user was not in any channels, no users will receive the text. Make sure the user
1444          * receives their OWN message for WriteCommon
1445          */
1446         if (!sent_to_at_least_one)
1447         {
1448                 this->WriteFrom(this,std::string(text));
1449         }
1450 }
1451
1452
1453 /* write a formatted string to all users who share at least one common
1454  * channel, NOT including the source user e.g. for use in QUIT
1455  */
1456
1457 void userrec::WriteCommonExcept(const char* text, ...)
1458 {
1459         char textbuffer[MAXBUF];
1460         va_list argsPtr;
1461
1462         va_start(argsPtr, text);
1463         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1464         va_end(argsPtr);
1465
1466         this->WriteCommonExcept(std::string(textbuffer));
1467 }
1468
1469 void userrec::WriteCommonExcept(const std::string &text)
1470 {
1471         bool quit_munge = false;
1472         char oper_quit[MAXBUF];
1473         char textbuffer[MAXBUF];
1474
1475         strlcpy(textbuffer, text.c_str(), MAXBUF);
1476
1477         if (this->registered != REG_ALL)
1478                 return;
1479
1480         uniq_id++;
1481
1482         /* TODO: We need some form of WriteCommonExcept that will send two lines, one line to
1483          * opers and the other line to non-opers, then all this hidebans and hidesplits gunk
1484          * can go byebye.
1485          */
1486         if (ServerInstance->Config->HideSplits)
1487         {
1488                 char* check = textbuffer + 6;
1489
1490                 if (!strncasecmp(textbuffer, "QUIT :",6))
1491                 {
1492                         std::stringstream split(check);
1493                         std::string server_one;
1494                         std::string server_two;
1495
1496                         split >> server_one;
1497                         split >> server_two;
1498
1499                         if ((ServerInstance->FindServerName(server_one)) && (ServerInstance->FindServerName(server_two)))
1500                         {
1501                                 strlcpy(oper_quit,textbuffer,MAXQUIT);
1502                                 strlcpy(check,"*.net *.split",MAXQUIT);
1503                                 quit_munge = true;
1504                         }
1505                 }
1506         }
1507
1508         if ((ServerInstance->Config->HideBans) && (!quit_munge))
1509         {
1510                 if ((!strncasecmp(textbuffer, "QUIT :G-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :K-Lined:",14))
1511                 || (!strncasecmp(textbuffer, "QUIT :Q-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :Z-Lined:",14)))
1512                 {
1513                         char* check = textbuffer + 13;
1514                         strlcpy(oper_quit,textbuffer,MAXQUIT);
1515                         *check = 0;  // We don't need to strlcpy, we just chop it from the :
1516                         quit_munge = true;
1517                 }
1518         }
1519
1520         for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1521         {
1522                 ucrec* n = *v;
1523                 if (n->channel)
1524                 {
1525                         CUList *ulist= n->channel->GetUsers();
1526
1527                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1528                         {
1529                                 if (this != i->second)
1530                                 {
1531                                         if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1532                                         {
1533                                                 already_sent[i->second->fd] = uniq_id;
1534                                                 if (quit_munge)
1535                                                         i->second->WriteFrom(this, *i->second->oper ? std::string(oper_quit) : std::string(textbuffer));
1536                                                 else
1537                                                         i->second->WriteFrom(this, std::string(textbuffer));
1538                                         }
1539                                 }
1540                         }
1541                 }
1542         }
1543
1544 }
1545
1546 void userrec::WriteWallOps(const std::string &text)
1547 {
1548         /* Does nothing if theyre not opered */
1549         if ((!*this->oper) && (IS_LOCAL(this)))
1550                 return;
1551
1552         std::string wallop = "WALLOPS :";
1553         wallop.append(text);
1554
1555         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1556         {
1557                 userrec* t = *i;
1558                 if ((IS_LOCAL(t)) && (t->modes[UM_WALLOPS]))
1559                         this->WriteTo(t,wallop);
1560         }
1561 }
1562
1563 void userrec::WriteWallOps(const char* text, ...)
1564 {
1565         char textbuffer[MAXBUF];
1566         va_list argsPtr;
1567
1568         va_start(argsPtr, text);
1569         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1570         va_end(argsPtr);
1571
1572         this->WriteWallOps(std::string(textbuffer));
1573 }
1574
1575 /* return 0 or 1 depending if users u and u2 share one or more common channels
1576  * (used by QUIT, NICK etc which arent channel specific notices)
1577  *
1578  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1579  * the first users channels then the second users channels within the outer loop,
1580  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1581  * all possible iterations). However this new function instead checks against the
1582  * channel's userlist in the inner loop which is a std::map<userrec*,userrec*>
1583  * and saves us time as we already know what pointer value we are after.
1584  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1585  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1586  */
1587 bool userrec::SharesChannelWith(userrec *other)
1588 {
1589         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1590                 return false;
1591
1592         /* Outer loop */
1593         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1594         {
1595                 /* Fetch the channel from the user */
1596                 ucrec* user_channel = *i;
1597
1598                 if (user_channel->channel)
1599                 {
1600                         /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1601                          * by replacing it with a map::find which *should* be more efficient
1602                          */
1603                         if (user_channel->channel->HasUser(other))
1604                                 return true;
1605                 }
1606         }
1607         return false;
1608 }
1609
1610 int userrec::CountChannels()
1611 {
1612         return ChannelCount;
1613         /*int z = 0;
1614         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1615                 if ((*i)->channel)
1616                         z++;
1617         return z;*/
1618 }
1619
1620 void userrec::ModChannelCount(int n)
1621 {
1622         ChannelCount += n;
1623 }
1624
1625 bool userrec::ChangeName(const char* gecos)
1626 {
1627         if (IS_LOCAL(this))
1628         {
1629                 int MOD_RESULT = 0;
1630                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1631                 if (MOD_RESULT)
1632                         return false;
1633                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1634         }
1635         strlcpy(this->fullname,gecos,MAXGECOS+1);
1636         return true;
1637 }
1638
1639 bool userrec::ChangeDisplayedHost(const char* host)
1640 {
1641         if (IS_LOCAL(this))
1642         {
1643                 int MOD_RESULT = 0;
1644                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host));
1645                 if (MOD_RESULT)
1646                         return false;
1647                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host));
1648         }
1649         if (this->ServerInstance->Config->CycleHosts)
1650                 this->WriteCommonExcept("%s","QUIT :Changing hosts");
1651
1652         strlcpy(this->dhost,host,63);
1653
1654         if (this->ServerInstance->Config->CycleHosts)
1655         {
1656                 for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1657                 {
1658                         if ((*i)->channel)
1659                         {
1660                                 (*i)->channel->WriteAllExceptSender(this, 0, "JOIN %s", (*i)->channel->name);
1661                                 std::string n = this->ServerInstance->Modes->ModeString(this, (*i)->channel);
1662                                 if (n.length())
1663                                         (*i)->channel->WriteChannelWithServ(this->ServerInstance->Config->ServerName, "MODE %s +%s", (*i)->channel->name, n.c_str());
1664                         }
1665                 }
1666         }
1667
1668         if (IS_LOCAL(this))
1669                 this->WriteServ("396 %s %s :is now your hidden host",this->nick,this->dhost);
1670
1671         return true;
1672 }
1673
1674 bool userrec::ChangeIdent(const char* newident)
1675 {
1676         if (this->ServerInstance->Config->CycleHosts)
1677                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1678
1679         strlcpy(this->ident, newident, IDENTMAX+2);
1680
1681         if (this->ServerInstance->Config->CycleHosts)
1682         {
1683                 for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1684                 {
1685                         if ((*i)->channel)
1686                         {
1687                                 (*i)->channel->WriteAllExceptSender(this, 0, "JOIN %s", (*i)->channel->name);
1688                                 std::string n = this->ServerInstance->Modes->ModeString(this, (*i)->channel);
1689                                 if (n.length())
1690                                         (*i)->channel->WriteChannelWithServ(this->ServerInstance->Config->ServerName, "MODE %s +%s", (*i)->channel->name, n.c_str());
1691                         }
1692                 }
1693         }
1694
1695         return true;
1696 }
1697
1698 void userrec::NoticeAll(char* text, ...)
1699 {
1700         char textbuffer[MAXBUF];
1701         char formatbuffer[MAXBUF];
1702         va_list argsPtr;
1703
1704         va_start(argsPtr, text);
1705         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1706         va_end(argsPtr);
1707
1708         snprintf(formatbuffer,MAXBUF,"NOTICE $* :%s",textbuffer);
1709
1710         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1711         {
1712                 userrec* t = *i;
1713                 t->WriteFrom(this, std::string(formatbuffer));
1714         }
1715 }
1716
1717
1718 std::string userrec::ChannelList(userrec* source)
1719 {
1720         std::string list;
1721         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1722         {
1723                 ucrec* rec = *i;
1724
1725                 if(rec->channel && rec->channel->name)
1726                 {
1727                         /* If the target is the same as the sender, let them see all their channels.
1728                          * If the channel is NOT private/secret OR the user shares a common channel
1729                          * If the user is an oper, and the <options:operspywhois> option is set.
1730                          */
1731                         if ((source == this) || (*source->oper && ServerInstance->Config->OperSpyWhois) || (((!rec->channel->modes[CM_PRIVATE]) && (!rec->channel->modes[CM_SECRET])) || (rec->channel->HasUser(source))))
1732                         {
1733                                 list.append(rec->channel->GetPrefixChar(this)).append(rec->channel->name).append(" ");
1734                         }
1735                 }
1736         }
1737         return list;
1738 }
1739
1740 void userrec::SplitChanList(userrec* dest, const std::string &cl)
1741 {
1742         std::string line;
1743         std::ostringstream prefix;
1744         std::string::size_type start, pos, length;
1745
1746         prefix << ":" << ServerInstance->Config->ServerName << " 319 " << this->nick << " " << dest->nick << " :";
1747         line = prefix.str();
1748
1749         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1750         {
1751                 length = (pos == std::string::npos) ? cl.length() : pos;
1752
1753                 if (line.length() + length - start > 510)
1754                 {
1755                         this->Write(line);
1756                         line = prefix.str();
1757                 }
1758
1759                 if(pos == std::string::npos)
1760                 {
1761                         line.append(cl.substr(start, length - start));
1762                         break;
1763                 }
1764                 else
1765                 {
1766                         line.append(cl.substr(start, length - start + 1));
1767                 }
1768         }
1769
1770         if (line.length())
1771         {
1772                 this->Write(line);
1773         }
1774 }
1775
1776
1777 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1778  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1779  * then their ip will be taken as 'priority' anyway, so for example,
1780  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1781  */
1782 ConnectClass& userrec::GetClass()
1783 {
1784         for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1785         {
1786                 if ((match(this->GetIPString(),i->host.c_str(),true)) || (match(this->host,i->host.c_str())))
1787                         return *i;
1788         }
1789
1790         return *(ServerInstance->Config->Classes.begin());
1791 }
1792
1793 void userrec::PurgeEmptyChannels()
1794 {
1795         std::vector<chanrec*> to_delete;
1796
1797         // firstly decrement the count on each channel
1798         for (std::vector<ucrec*>::iterator f = this->chans.begin(); f != this->chans.end(); f++)
1799         {
1800                 ucrec* uc = *f;
1801                 if (uc->channel)
1802                 {
1803                         uc->channel->RemoveAllPrefixes(this);
1804                         if (uc->channel->DelUser(this) == 0)
1805                         {
1806                                 /* No users left in here, mark it for deletion */
1807                                 to_delete.push_back(uc->channel);
1808                                 uc->channel = NULL;
1809                         }
1810                 }
1811         }
1812
1813         for (std::vector<chanrec*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1814         {
1815                 chanrec* thischan = *n;
1816                 chan_hash::iterator i2 = ServerInstance->chanlist.find(thischan->name);
1817                 if (i2 != ServerInstance->chanlist.end())
1818                 {
1819                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1820                         DELETE(i2->second);
1821                         ServerInstance->chanlist.erase(i2);
1822                 }
1823         }
1824
1825         this->UnOper();
1826 }
1827
1828 void userrec::ShowMOTD()
1829 {
1830         if (!ServerInstance->Config->MOTD.size())
1831         {
1832                 this->WriteServ("422 %s :Message of the day file is missing.",this->nick);
1833                 return;
1834         }
1835         this->WriteServ("375 %s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1836
1837         for (unsigned int i = 0; i < ServerInstance->Config->MOTD.size(); i++)
1838                 this->WriteServ("372 %s :- %s",this->nick,ServerInstance->Config->MOTD[i].c_str());
1839
1840         this->WriteServ("376 %s :End of message of the day.", this->nick);
1841 }
1842
1843 void userrec::ShowRULES()
1844 {
1845         if (!ServerInstance->Config->RULES.size())
1846         {
1847                 this->WriteServ("NOTICE %s :Rules file is missing.",this->nick);
1848                 return;
1849         }
1850         this->WriteServ("NOTICE %s :%s rules",this->nick,ServerInstance->Config->ServerName);
1851
1852         for (unsigned int i = 0; i < ServerInstance->Config->RULES.size(); i++)
1853                 this->WriteServ("NOTICE %s :%s",this->nick,ServerInstance->Config->RULES[i].c_str());
1854
1855         this->WriteServ("NOTICE %s :End of %s rules.",this->nick,ServerInstance->Config->ServerName);
1856 }
1857
1858 void userrec::HandleEvent(EventType et)
1859 {
1860         /* WARNING: May delete this user! */
1861         ServerInstance->ProcessUser(this);
1862 }
1863