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 static unsigned long already_sent[MAX_DESCRIPTORS] = {0};
  28
  29 /* XXX: Used for speeding up WriteCommon operations */
  30 unsigned long uniq_id = 0;
  31
  32 bool InitTypes(ServerConfig* conf, const char* tag)
  33 {
  34         for (opertype_t::iterator n = conf->opertypes.begin(); n != conf->opertypes.end(); n++)
  35         {
  36                 if (n->second)
  37                         delete[] n->second;
  38         }
  39
  40         conf->opertypes.clear();
  41         return true;
  42 }
  43
  44 bool InitClasses(ServerConfig* conf, const char* tag)
  45 {
  46         for (operclass_t::iterator n = conf->operclass.begin(); n != conf->operclass.end(); n++)
  47         {
  48                 if (n->second)
  49                         delete[] n->second;
  50         }
  51
  52         conf->operclass.clear();
  53         return true;
  54 }
  55
  56 bool DoType(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
  57 {
  58         char* TypeName = (char*)values[0];
  59         char* Classes = (char*)values[1];
  60
  61         conf->opertypes[TypeName] = strdup(Classes);
  62         conf->GetInstance()->Log(DEBUG,"Read oper TYPE '%s' with classes '%s'",TypeName,Classes);
  63         return true;
  64 }
  65
  66 bool DoClass(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
  67 {
  68         char* ClassName = (char*)values[0];
  69         char* CommandList = (char*)values[1];
  70
  71         conf->operclass[ClassName] = strdup(CommandList);
  72         conf->GetInstance()->Log(DEBUG,"Read oper CLASS '%s' with commands '%s'",ClassName,CommandList);
  73         return true;
  74 }
  75
  76 bool DoneClassesAndTypes(ServerConfig* conf, const char* tag)
  77 {
  78         return true;
  79 }
  80
  81 std::string userrec::ProcessNoticeMasks(const char *sm)
  82 {
  83         bool adding = true, oldadding = false;
  84         const char *c = sm;
  85         std::string output;
  86
  87         ServerInstance->Log(DEBUG,"Process notice masks");
  88
  89         while (c && *c)
  90         {
  91                 ServerInstance->Log(DEBUG,"Process notice mask %c",*c);
  92
  93                 switch (*c)
  94                 {
  95                         case '+':
  96                                 adding = true;
  97                         break;
  98                         case '-':
  99                                 adding = false;
 100                         break;
 101                         case '*':
 102                                 for (unsigned char d = 'A'; d <= 'z'; d++)
 103                                 {
 104                                         if (ServerInstance->SNO->IsEnabled(d))
 105                                         {
 106                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
 107                                                 {
 108                                                         if ((oldadding != adding) || (!output.length()))
 109                                                                 output += (adding ? '+' : '-');
 110
 111                                                         this->SetNoticeMask(d, adding);
 112
 113                                                         output += d;
 114                                                 }
 115                                         }
 116                                         oldadding = adding;
 117                                 }
 118                         break;
 119                         default:
 120                                 if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c)))
 121                                 {
 122                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
 123                                         {
 124                                                 if ((oldadding != adding) || (!output.length()))
 125                                                         output += (adding ? '+' : '-');
 126
 127                                                 this->SetNoticeMask(*c, adding);
 128
 129                                                 output += *c;
 130                                         }
 131                                 }
 132                                 oldadding = adding;
 133                         break;
 134                 }
 135
 136                 *c++;
 137         }
 138
 139         return output;
 140 }
 141
 142 void userrec::StartDNSLookup()
 143 {
 144         ServerInstance->Log(DEBUG,"Commencing reverse lookup");
 145         try
 146         {
 147                 ServerInstance->Log(DEBUG,"Passing instance: %08x",this->ServerInstance);
 148                 res_reverse = new UserResolver(this->ServerInstance, this, this->GetIPString(), false);
 149                 this->ServerInstance->AddResolver(res_reverse);
 150         }
 151         catch (ModuleException& e)
 152         {
 153                 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
 154         }
 155 }
 156
 157 UserResolver::UserResolver(InspIRCd* Instance, userrec* user, std::string to_resolve, bool forward) :
 158         Resolver(Instance, to_resolve, forward ? DNS_QUERY_FORWARD : DNS_QUERY_REVERSE), bound_user(user)
 159 {
 160         this->fwd = forward;
 161         this->bound_fd = user->GetFd();
 162 }
 163
 164 void UserResolver::OnLookupComplete(const std::string &result)
 165 {
 166         if ((!this->fwd) && (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user))
 167         {
 168                 ServerInstance->Log(DEBUG,"Commencing forward lookup");
 169                 this->bound_user->stored_host = result;
 170                 try
 171                 {
 172                         /* Check we didnt time out */
 173                         if (this->bound_user->registered != REG_ALL)
 174                         {
 175                                 bound_user->res_forward = new UserResolver(this->ServerInstance, this->bound_user, result, true);
 176                                 this->ServerInstance->AddResolver(bound_user->res_forward);
 177                         }
 178                 }
 179                 catch (ModuleException& e)
 180                 {
 181                         ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
 182                 }
 183         }
 184         else if ((this->fwd) && (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user))
 185         {
 186                 /* Both lookups completed */
 187                 if (this->bound_user->GetIPString() == result)
 188                 {
 189                         std::string hostname = this->bound_user->stored_host;
 190                         if (hostname.length() < 65)
 191                         {
 192                                 /* Check we didnt time out */
 193                                 if (this->bound_user->registered != REG_ALL)
 194                                 {
 195                                         /* Hostnames starting with : are not a good thing (tm) */
 196                                         if (*(hostname.c_str()) == ':')
 197                                                 hostname = "0" + hostname;
 198
 199                                         this->bound_user->WriteServ("NOTICE Auth :*** Found your hostname (%s)", hostname.c_str());
 200                                         this->bound_user->dns_done = true;
 201                                         strlcpy(this->bound_user->dhost, hostname.c_str(),64);
 202                                         strlcpy(this->bound_user->host, hostname.c_str(),64);
 203                                 }
 204                         }
 205                         else
 206                         {
 207                                 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());
 208                         }
 209                 }
 210                 else
 211                 {
 212                         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());
 213                 }
 214         }
 215 }
 216
 217 void UserResolver::OnError(ResolverError e, const std::string &errormessage)
 218 {
 219         if (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user)
 220         {
 221                 /* Error message here */
 222                 this->bound_user->WriteServ("NOTICE Auth :*** Could not resolve your hostname, using your IP address (%s) instead.", this->bound_user->GetIPString());
 223                 this->bound_user->dns_done = true;
 224         }
 225 }
 226
 227
 228 bool userrec::IsNoticeMaskSet(unsigned char sm)
 229 {
 230         return (snomasks[sm-65]);
 231 }
 232
 233 void userrec::SetNoticeMask(unsigned char sm, bool value)
 234 {
 235         snomasks[sm-65] = value;
 236 }
 237
 238 const char* userrec::FormatNoticeMasks()
 239 {
 240         static char data[MAXBUF];
 241         int offset = 0;
 242
 243         for (int n = 0; n < 64; n++)
 244         {
 245                 if (snomasks[n])
 246                         data[offset++] = n+65;
 247         }
 248
 249         data[offset] = 0;
 250         return data;
 251 }
 252
 253
 254
 255 bool userrec::IsModeSet(unsigned char m)
 256 {
 257         return (modes[m-65]);
 258 }
 259
 260 void userrec::SetMode(unsigned char m, bool value)
 261 {
 262         modes[m-65] = value;
 263 }
 264
 265 const char* userrec::FormatModes()
 266 {
 267         static char data[MAXBUF];
 268         int offset = 0;
 269         for (int n = 0; n < 64; n++)
 270         {
 271                 if (modes[n])
 272                         data[offset++] = n+65;
 273         }
 274         data[offset] = 0;
 275         return data;
 276 }
 277
 278 userrec::userrec(InspIRCd* Instance) : ServerInstance(Instance)
 279 {
 280         ServerInstance->Log(DEBUG,"userrec::userrec(): Instance: %08x",ServerInstance);
 281         // the PROPER way to do it, AVOID bzero at *ALL* costs
 282         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = 0;
 283         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 284         reset_due = ServerInstance->Time();
 285         lines_in = lastping = signon = idle_lastmsg = nping = registered = 0;
 286         ChannelCount = timeout = flood = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 287         haspassed = dns_done = false;
 288         fd = -1;
 289         recvq = "";
 290         sendq = "";
 291         WriteError = "";
 292         res_forward = res_reverse = NULL;
 293         ip = NULL;
 294         chans.clear();
 295         invites.clear();
 296         chans.resize(MAXCHANS);
 297         memset(modes,0,sizeof(modes));
 298         memset(snomasks,0,sizeof(snomasks));
 299
 300         for (unsigned int n = 0; n < MAXCHANS; n++)
 301         {
 302                 chans[n] = new ucrec();
 303                 chans[n]->channel = NULL;
 304                 chans[n]->uc_modes = 0;
 305         }
 306 }
 307
 308 userrec::~userrec()
 309 {
 310         for (std::vector<ucrec*>::iterator n = chans.begin(); n != chans.end(); n++)
 311         {
 312                 ucrec* x = (ucrec*)*n;
 313                 delete x;
 314         }
 315
 316         if (ip)
 317         {
 318                 if (this->GetProtocolFamily() == AF_INET)
 319                 {
 320                         delete (sockaddr_in*)ip;
 321                 }
 322 #ifdef SUPPORT_IP6LINKS
 323                 else
 324                 {
 325                         delete (sockaddr_in6*)ip;
 326                 }
 327 #endif
 328         }
 329 }
 330
 331 /* XXX - minor point, other *Host functions return a char *, this one creates it. Might be nice to be consistant? */
 332 void userrec::MakeHost(char* nhost)
 333 {
 334         /* This is much faster than snprintf */
 335         char* t = nhost;
 336         for(char* n = ident; *n; n++)
 337                 *t++ = *n;
 338         *t++ = '@';
 339         for(char* n = host; *n; n++)
 340                 *t++ = *n;
 341         *t = 0;
 342 }
 343
 344 void userrec::CloseSocket()
 345 {
 346         shutdown(this->fd,2);
 347         close(this->fd);
 348 }
 349
 350 char* userrec::GetFullHost()
 351 {
 352         static char result[MAXBUF];
 353         char* t = result;
 354         for(char* n = nick; *n; n++)
 355                 *t++ = *n;
 356         *t++ = '!';
 357         for(char* n = ident; *n; n++)
 358                 *t++ = *n;
 359         *t++ = '@';
 360         for(char* n = dhost; *n; n++)
 361                 *t++ = *n;
 362         *t = 0;
 363         return result;
 364 }
 365
 366 char* userrec::MakeWildHost()
 367 {
 368         static char nresult[MAXBUF];
 369         char* t = nresult;
 370         *t++ = '*';     *t++ = '!';
 371         *t++ = '*';     *t++ = '@';
 372         for(char* n = dhost; *n; n++)
 373                 *t++ = *n;
 374         *t = 0;
 375         return nresult;
 376 }
 377
 378 int userrec::ReadData(void* buffer, size_t size)
 379 {
 380         if (IS_LOCAL(this))
 381         {
 382                 return read(this->fd, buffer, size);
 383         }
 384         else
 385                 return 0;
 386 }
 387
 388
 389 char* userrec::GetFullRealHost()
 390 {
 391         static char fresult[MAXBUF];
 392         char* t = fresult;
 393         for(char* n = nick; *n; n++)
 394                 *t++ = *n;
 395         *t++ = '!';
 396         for(char* n = ident; *n; n++)
 397                 *t++ = *n;
 398         *t++ = '@';
 399         for(char* n = host; *n; n++)
 400                 *t++ = *n;
 401         *t = 0;
 402         return fresult;
 403 }
 404
 405 bool userrec::IsInvited(irc::string &channel)
 406 {
 407         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 408         {
 409                 irc::string compare = i->channel;
 410
 411                 if (compare == channel)
 412                 {
 413                         return true;
 414                 }
 415         }
 416         return false;
 417 }
 418
 419 InvitedList* userrec::GetInviteList()
 420 {
 421         return &invites;
 422 }
 423
 424 void userrec::InviteTo(irc::string &channel)
 425 {
 426         Invited i;
 427         i.channel = channel;
 428         invites.push_back(i);
 429 }
 430
 431 void userrec::RemoveInvite(irc::string &channel)
 432 {
 433         ServerInstance->Log(DEBUG,"Removing invites");
 434
 435         if (invites.size())
 436         {
 437                 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 438                 {
 439                         irc::string compare = i->channel;
 440
 441                         if (compare == channel)
 442                         {
 443                                 invites.erase(i);
 444                                 return;
 445                         }
 446                 }
 447         }
 448 }
 449
 450 bool userrec::HasPermission(const std::string &command)
 451 {
 452         char* mycmd;
 453         char* savept;
 454         char* savept2;
 455
 456         /*
 457          * users on remote servers can completely bypass all permissions based checks.
 458          * This prevents desyncs when one server has different type/class tags to another.
 459          * That having been said, this does open things up to the possibility of source changes
 460          * allowing remote kills, etc - but if they have access to the src, they most likely have
 461          * access to the conf - so it's an end to a means either way.
 462          */
 463         if (!IS_LOCAL(this))
 464                 return true;
 465
 466         // are they even an oper at all?
 467         if (*this->oper)
 468         {
 469                 opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper);
 470                 if (iter_opertype != ServerInstance->Config->opertypes.end())
 471                 {
 472                         char* Classes = strdup(iter_opertype->second);
 473                         char* myclass = strtok_r(Classes," ",&savept);
 474                         while (myclass)
 475                         {
 476                                 operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass);
 477                                 if (iter_operclass != ServerInstance->Config->operclass.end())
 478                                 {
 479                                         char* CommandList = strdup(iter_operclass->second);
 480                                         mycmd = strtok_r(CommandList," ",&savept2);
 481                                         while (mycmd)
 482                                         {
 483                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 484                                                 {
 485                                                         free(Classes);
 486                                                         free(CommandList);
 487                                                         return true;
 488                                                 }
 489                                                 mycmd = strtok_r(NULL," ",&savept2);
 490                                         }
 491                                         free(CommandList);
 492                                 }
 493                                 myclass = strtok_r(NULL," ",&savept);
 494                         }
 495                         free(Classes);
 496                 }
 497         }
 498         return false;
 499 }
 500
 501 /** NOTE: We cannot pass a const reference to this method.
 502  * The string is changed by the workings of the method,
 503  * so that if we pass const ref, we end up copying it to
 504  * something we can change anyway. Makes sense to just let
 505  * the compiler do that copy for us.
 506  */
 507 bool userrec::AddBuffer(std::string a)
 508 {
 509         try
 510         {
 511                 std::string::size_type i = a.rfind('\r');
 512
 513                 while (i != std::string::npos)
 514                 {
 515                         a.erase(i, 1);
 516                         i = a.rfind('\r');
 517                 }
 518
 519                 if (a.length())
 520                         recvq.append(a);
 521
 522                 if (recvq.length() > (unsigned)this->recvqmax)
 523                 {
 524                         this->SetWriteError("RecvQ exceeded");
 525                         ServerInstance->WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 526                         return false;
 527                 }
 528
 529                 return true;
 530         }
 531
 532         catch (...)
 533         {
 534                 ServerInstance->Log(DEBUG,"Exception in userrec::AddBuffer()");
 535                 return false;
 536         }
 537 }
 538
 539 bool userrec::BufferIsReady()
 540 {
 541         return (recvq.find('\n') != std::string::npos);
 542 }
 543
 544 void userrec::ClearBuffer()
 545 {
 546         recvq = "";
 547 }
 548
 549 std::string userrec::GetBuffer()
 550 {
 551         try
 552         {
 553                 if (!recvq.length())
 554                         return "";
 555
 556                 /* Strip any leading \r or \n off the string.
 557                  * Usually there are only one or two of these,
 558                  * so its is computationally cheap to do.
 559                  */
 560                 while ((*recvq.begin() == '\r') || (*recvq.begin() == '\n'))
 561                         recvq.erase(recvq.begin());
 562
 563                 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 564                 {
 565                         /* Find the first complete line, return it as the
 566                          * result, and leave the recvq as whats left
 567                          */
 568                         if (*x == '\n')
 569                         {
 570                                 std::string ret = std::string(recvq.begin(), x);
 571                                 recvq.erase(recvq.begin(), x + 1);
 572                                 return ret;
 573                         }
 574                 }
 575                 return "";
 576         }
 577
 578         catch (...)
 579         {
 580                 ServerInstance->Log(DEBUG,"Exception in userrec::GetBuffer()");
 581                 return "";
 582         }
 583 }
 584
 585 void userrec::AddWriteBuf(const std::string &data)
 586 {
 587         if (*this->GetWriteError())
 588                 return;
 589
 590         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 591         {
 592                 /*
 593                  * Fix by brain - Set the error text BEFORE calling writeopers, because
 594                  * if we dont it'll recursively  call here over and over again trying
 595                  * to repeatedly add the text to the sendq!
 596                  */
 597                 this->SetWriteError("SendQ exceeded");
 598                 ServerInstance->WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 599                 return;
 600         }
 601
 602         try
 603         {
 604                 if (data.length() > 512)
 605                 {
 606                         std::string newdata(data);
 607                         newdata.resize(510);
 608                         newdata.append("\r\n");
 609                         sendq.append(newdata);
 610                 }
 611                 else
 612                 {
 613                         sendq.append(data);
 614                 }
 615         }
 616         catch (...)
 617         {
 618                 this->SetWriteError("SendQ exceeded");
 619                 ServerInstance->WriteOpers("*** User %s SendQ got an exception",this->nick);
 620         }
 621 }
 622
 623 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 624 void userrec::FlushWriteBuf()
 625 {
 626         try
 627         {
 628                 if (this->fd == FD_MAGIC_NUMBER)
 629                 {
 630                         sendq = "";
 631                 }
 632                 if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 633                 {
 634                         const char* tb = this->sendq.c_str();
 635                         int n_sent = write(this->fd,tb,this->sendq.length());
 636                         if (n_sent == -1)
 637                         {
 638                                 if (errno != EAGAIN)
 639                                         this->SetWriteError(strerror(errno));
 640                         }
 641                         else
 642                         {
 643                                 // advance the queue
 644                                 tb += n_sent;
 645                                 this->sendq = tb;
 646                                 // update the user's stats counters
 647                                 this->bytes_out += n_sent;
 648                                 this->cmds_out++;
 649                         }
 650                 }
 651         }
 652
 653         catch (...)
 654         {
 655                 ServerInstance->Log(DEBUG,"Exception in userrec::FlushWriteBuf()");
 656         }
 657 }
 658
 659 void userrec::SetWriteError(const std::string &error)
 660 {
 661         try
 662         {
 663                 ServerInstance->Log(DEBUG,"SetWriteError: %s",error.c_str());
 664                 // don't try to set the error twice, its already set take the first string.
 665                 if (!this->WriteError.length())
 666                 {
 667                         ServerInstance->Log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 668                         this->WriteError = error;
 669                 }
 670         }
 671
 672         catch (...)
 673         {
 674                 ServerInstance->Log(DEBUG,"Exception in userrec::SetWriteError()");
 675         }
 676 }
 677
 678 const char* userrec::GetWriteError()
 679 {
 680         return this->WriteError.c_str();
 681 }
 682
 683 void userrec::Oper(const std::string &opertype)
 684 {
 685         try
 686         {
 687                 this->modes[UM_OPERATOR] = 1;
 688                 this->WriteServ("MODE %s :+o", this->nick);
 689                 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 690                 ServerInstance->Log(DEFAULT,"OPER: %s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 691                 strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 692                 ServerInstance->all_opers.push_back(this);
 693                 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype));
 694         }
 695
 696         catch (...)
 697         {
 698                 ServerInstance->Log(DEBUG,"Exception in userrec::Oper()");
 699         }
 700 }
 701
 702 void userrec::UnOper()
 703 {
 704         try
 705         {
 706                 if (*this->oper)
 707                 {
 708                         *this->oper = 0;
 709                         this->modes[UM_OPERATOR] = 0;
 710                         for (std::vector<userrec*>::iterator a = ServerInstance->all_opers.begin(); a < ServerInstance->all_opers.end(); a++)
 711                         {
 712                                 if (*a == this)
 713                                 {
 714                                         ServerInstance->Log(DEBUG,"Oper removed from optimization list");
 715                                         ServerInstance->all_opers.erase(a);
 716                                         return;
 717                                 }
 718                         }
 719                 }
 720         }
 721
 722         catch (...)
 723         {
 724                 ServerInstance->Log(DEBUG,"Exception in userrec::UnOper()");
 725         }
 726 }
 727
 728 void userrec::QuitUser(InspIRCd* Instance, userrec *user, const std::string &quitreason)
 729 {
 730         user_hash::iterator iter = Instance->clientlist.find(user->nick);
 731         std::string reason = quitreason;
 732
 733         if (reason.length() > MAXQUIT - 1)
 734                 reason.resize(MAXQUIT - 1);
 735
 736         if (IS_LOCAL(user))
 737                 user->Write("ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason.c_str());
 738
 739         if (user->registered == REG_ALL)
 740         {
 741                 user->PurgeEmptyChannels();
 742                 FOREACH_MOD_I(Instance,I_OnUserQuit,OnUserQuit(user,reason));
 743                 user->WriteCommonExcept("QUIT :%s",reason.c_str());
 744         }
 745
 746         if (IS_LOCAL(user))
 747                 user->FlushWriteBuf();
 748
 749         FOREACH_MOD_I(Instance,I_OnUserDisconnect,OnUserDisconnect(user));
 750
 751         if (IS_LOCAL(user))
 752         {
 753                 if (Instance->Config->GetIOHook(user->GetPort()))
 754                 {
 755                         try
 756                         {
 757                                 Instance->Config->GetIOHook(user->GetPort())->OnRawSocketClose(user->fd);
 758                         }
 759                         catch (ModuleException& modexcept)
 760                         {
 761                                 Instance->Log(DEBUG,"Module exception cought: %s",modexcept.GetReason());
 762                         }
 763                 }
 764
 765                 Instance->SE->DelFd(user);
 766                 user->CloseSocket();
 767         }
 768
 769         /*
 770          * this must come before the ServerInstance->SNO->WriteToSnoMaskso that it doesnt try to fill their buffer with anything
 771          * if they were an oper with +sn +qQ.
 772          */
 773         if (user->registered == REG_ALL)
 774         {
 775                 if (IS_LOCAL(user))
 776                         Instance->SNO->WriteToSnoMask('q',"Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason.c_str());
 777                 else
 778                         Instance->SNO->WriteToSnoMask('Q',"Client exiting on server %s: %s!%s@%s [%s]",user->server,user->nick,user->ident,user->host,reason.c_str());
 779                 user->AddToWhoWas();
 780         }
 781
 782         if (iter != Instance->clientlist.end())
 783         {
 784                 Instance->Log(DEBUG,"deleting user hash value %lx",(unsigned long)user);
 785                 if (IS_LOCAL(user))
 786                 {
 787                         if (find(Instance->local_users.begin(),Instance->local_users.end(),user) != Instance->local_users.end())
 788                                 Instance->local_users.erase(find(Instance->local_users.begin(),Instance->local_users.end(),user));
 789                 }
 790                 Instance->clientlist.erase(iter);
 791                 DELETE(user);
 792         }
 793 }
 794
 795 namespace irc
 796 {
 797         namespace whowas
 798         {
 799
 800                 WhoWasGroup::WhoWasGroup(userrec* user) : host(NULL), dhost(NULL), ident(NULL), server(NULL), gecos(NULL), signon(user->signon)
 801                 {
 802                         this->host = strdup(user->host);
 803                         this->dhost = strdup(user->dhost);
 804                         this->ident = strdup(user->ident);
 805                         this->server = user->server;
 806                         this->gecos = strdup(user->fullname);
 807                 }
 808
 809                 WhoWasGroup::~WhoWasGroup()
 810                 {
 811                         if (host)
 812                                 free(host);
 813                         if (dhost)
 814                                 free(dhost);
 815                         if (ident)
 816                                 free(ident);
 817                         if (gecos)
 818                                 free(gecos);
 819                 }
 820
 821                 /* every hour, run this function which removes all entries over 3 days */
 822                 void MaintainWhoWas(InspIRCd* ServerInstance, time_t t)
 823                 {
 824                         for (whowas_users::iterator iter = ServerInstance->whowas.begin(); iter != ServerInstance->whowas.end(); iter++)
 825                         {
 826                                 whowas_set* n = (whowas_set*)iter->second;
 827                                 if (n->size())
 828                                 {
 829                                         while ((n->begin() != n->end()) && ((*n->begin())->signon < t - 259200)) // 3 days
 830                                         {
 831                                                 WhoWasGroup *a = *(n->begin());
 832                                                 DELETE(a);
 833                                                 n->erase(n->begin());
 834                                         }
 835                                 }
 836                         }
 837                 }
 838         };
 839 };
 840
 841 /* adds or updates an entry in the whowas list */
 842 void userrec::AddToWhoWas()
 843 {
 844         irc::whowas::whowas_users::iterator iter = ServerInstance->whowas.find(this->nick);
 845
 846         ServerInstance->Log(DEBUG,"Add to whowas lists");
 847
 848         if (iter == ServerInstance->whowas.end())
 849         {
 850                 ServerInstance->Log(DEBUG,"Adding new whowas set for %s",this->nick);
 851                 irc::whowas::whowas_set* n = new irc::whowas::whowas_set;
 852                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 853                 n->push_back(a);
 854                 ServerInstance->whowas[this->nick] = n;
 855         }
 856         else
 857         {
 858                 irc::whowas::whowas_set* group = (irc::whowas::whowas_set*)iter->second;
 859
 860                 ServerInstance->Log(DEBUG,"Using existing whowas group for %s",this->nick);
 861
 862                 if (group->size() > 10)
 863                 {
 864                         ServerInstance->Log(DEBUG,"Trimming existing group to ten entries for %s",this->nick);
 865                         irc::whowas::WhoWasGroup *a = (irc::whowas::WhoWasGroup*)*(group->begin());
 866                         DELETE(a);
 867                         group->pop_front();
 868                 }
 869
 870                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 871                 group->push_back(a);
 872         }
 873 }
 874
 875 /* add a client connection to the sockets list */
 876 void userrec::AddClient(InspIRCd* Instance, int socket, int port, bool iscached, insp_inaddr ip)
 877 {
 878         std::string tempnick = ConvToStr(socket) + "-unknown";
 879         user_hash::iterator iter = Instance->clientlist.find(tempnick);
 880         const char *ipaddr = insp_ntoa(ip);
 881         userrec* New;
 882         int j = 0;
 883
 884         /*
 885          * fix by brain.
 886          * as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 887          * using one as a registered connection. As they are per fd, we can also safely assume
 888          * that we wont have collisions. Therefore, if the nick exists in the list, its only
 889          * used by a dead socket, erase the iterator so that the new client may reclaim it.
 890          * this was probably the cause of 'server ignores me when i hammer it with reconnects'
 891          * issue in earlier alphas/betas
 892          */
 893         if (iter != Instance->clientlist.end())
 894         {
 895                 userrec* goner = iter->second;
 896                 DELETE(goner);
 897                 Instance->clientlist.erase(iter);
 898         }
 899
 900         Instance->Log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr);
 901
 902         New = new userrec(Instance);
 903         Instance->clientlist[tempnick] = New;
 904         New->fd = socket;
 905         strlcpy(New->nick,tempnick.c_str(),NICKMAX-1);
 906
 907         New->server = Instance->FindServerNamePtr(Instance->Config->ServerName);
 908         /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
 909         strcpy(New->ident, "unknown");
 910
 911         New->registered = REG_NONE;
 912         New->signon = Instance->Time() + Instance->Config->dns_timeout;
 913         New->lastping = 1;
 914
 915         Instance->Log(DEBUG,"Setting socket addresses");
 916         New->SetSockAddr(AF_FAMILY, ipaddr, port);
 917         Instance->Log(DEBUG,"Socket addresses set.");
 918
 919         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
 920         for (const char* temp = New->GetIPString(); *temp && j < 64; temp++, j++)
 921                 New->dhost[j] = New->host[j] = *temp;
 922         New->dhost[j] = New->host[j] = 0;
 923
 924         Instance->Log(DEBUG,"Hosts set.");
 925
 926         // set the registration timeout for this user
 927         unsigned long class_regtimeout = 90;
 928         int class_flood = 0;
 929         long class_threshold = 5;
 930         long class_sqmax = 262144;      // 256kb
 931         long class_rqmax = 4096;        // 4k
 932
 933         Instance->Log(DEBUG,"Class stuff set.");
 934
 935         for (ClassVector::iterator i = Instance->Config->Classes.begin(); i != Instance->Config->Classes.end(); i++)
 936         {
 937                 if ((i->type == CC_ALLOW) && (match(ipaddr,i->host.c_str(),true)))
 938                 {
 939                         class_regtimeout = (unsigned long)i->registration_timeout;
 940                         class_flood = i->flood;
 941                         New->pingmax = i->pingtime;
 942                         class_threshold = i->threshold;
 943                         class_sqmax = i->sendqmax;
 944                         class_rqmax = i->recvqmax;
 945                         break;
 946                 }
 947         }
 948
 949         Instance->Log(DEBUG,"nping etc set.");
 950
 951         New->nping = Instance->Time() + New->pingmax + Instance->Config->dns_timeout;
 952         New->timeout = Instance->Time() + class_regtimeout;
 953         New->flood = class_flood;
 954         New->threshold = class_threshold;
 955         New->sendqmax = class_sqmax;
 956         New->recvqmax = class_rqmax;
 957
 958         Instance->Log(DEBUG,"Push back to local users.");
 959         Instance->local_users.push_back(New);
 960
 961         Instance->Log(DEBUG,"Check softlimit: %d %d %d",Instance->local_users.size(), Instance->Config->SoftLimit, MAXCLIENTS);
 962         if ((Instance->local_users.size() > Instance->Config->SoftLimit) || (Instance->local_users.size() >= MAXCLIENTS))
 963         {
 964                 Instance->Log(DEBUG,"Check softlimit failed");
 965                 Instance->WriteOpers("*** Warning: softlimit value has been reached: %d clients", Instance->Config->SoftLimit);
 966                 userrec::QuitUser(Instance, New,"No more connections allowed");
 967                 return;
 968         }
 969
 970         Instance->Log(DEBUG,"Softlimit passed.");
 971
 972         /*
 973          * XXX -
 974          * this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 975          * its a pretty big but for the moment valid assumption:
 976          * file descriptors are handed out starting at 0, and are recycled as theyre freed.
 977          * therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 978          * irc server at once (or the irc server otherwise initiating this many connections, files etc)
 979          * which for the time being is a physical impossibility (even the largest networks dont have more
 980          * than about 10,000 users on ONE server!)
 981          */
 982         if ((unsigned int)socket >= MAX_DESCRIPTORS)
 983         {
 984                 userrec::QuitUser(Instance, New, "Server is full");
 985                 return;
 986         }
 987
 988         Instance->Log(DEBUG,"socket < MAX_DESCRIPTORS passed.");
 989
 990         ELine* e = Instance->XLines->matches_exception(New);
 991         if (!e)
 992         {
 993                 Instance->Log(DEBUG,"Doesnt match eline.");
 994                 ZLine* r = Instance->XLines->matches_zline(ipaddr);
 995                 if (r)
 996                 {
 997                         Instance->Log(DEBUG,"Matches zline.");
 998                         char reason[MAXBUF];
 999                         snprintf(reason,MAXBUF,"Z-Lined: %s",r->reason);
1000                         userrec::QuitUser(Instance, New, reason);
1001                         return;
1002                 }
1003                 Instance->Log(DEBUG,"Doesnt match zline.");
1004         }
1005
1006         Instance->Log(DEBUG,"Check before AddFd.");
1007
1008         if (socket > -1)
1009         {
1010                 Instance->Log(DEBUG,"Adding fd.");
1011                 if (!Instance->SE->AddFd(New))
1012                 {
1013                         Instance->Log(DEBUG,"Oops, fd already exists");
1014                         userrec::QuitUser(Instance, New, "Internal error handling connection");
1015                         return;
1016                 }
1017         }
1018
1019         New->WriteServ("NOTICE Auth :*** Looking up your hostname...");
1020 }
1021
1022 long userrec::GlobalCloneCount()
1023 {
1024         char u2[128];
1025         long x = 0;
1026         strlcpy(u2, this->GetIPString(), 64);
1027
1028         for (user_hash::const_iterator a = ServerInstance->clientlist.begin(); a != ServerInstance->clientlist.end(); a++)
1029         {
1030                 /* We have to match ip's as strings - we don't know what protocol
1031                  * a remote user may be using
1032                  */
1033                 if (strcasecmp(a->second->GetIPString(), u2) == 0)
1034                         x++;
1035         }
1036
1037         return x;
1038 }
1039
1040 long userrec::LocalCloneCount()
1041 {
1042         long x = 0;
1043         for (std::vector<userrec*>::const_iterator a = ServerInstance->local_users.begin(); a != ServerInstance->local_users.end(); a++)
1044         {
1045                 userrec* comp = *a;
1046 #ifdef IPV6
1047                 /* I dont think theres any faster way of matching two ipv6 addresses than memcmp */
1048                 in6_addr* s1 = &(((sockaddr_in6*)comp->ip)->sin6_addr);
1049                 in6_addr* s2 = &(((sockaddr_in6*)this->ip)->sin6_addr);
1050                 if (!memcmp(s1->s6_addr, s2->s6_addr, sizeof(in6_addr)))
1051                         x++;
1052 #else
1053                 in_addr* s1 = &((sockaddr_in*)comp->ip)->sin_addr;
1054                 in_addr* s2 = &((sockaddr_in*)this->ip)->sin_addr;
1055                 if (s1->s_addr == s2->s_addr)
1056                         x++;
1057 #endif
1058         }
1059         return x;
1060 }
1061
1062 void userrec::FullConnect(CullList* Goners)
1063 {
1064         ServerInstance->stats->statsConnects++;
1065         this->idle_lastmsg = ServerInstance->Time();
1066
1067         ConnectClass a = this->GetClass();
1068
1069         if (a.type == CC_DENY)
1070         {
1071                 Goners->AddItem(this,"Unauthorised connection");
1072                 return;
1073         }
1074
1075         if ((*(a.pass.c_str())) && (!this->haspassed))
1076         {
1077                 Goners->AddItem(this,"Invalid password");
1078                 return;
1079         }
1080
1081         if (this->LocalCloneCount() > a.maxlocal)
1082         {
1083                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (local)");
1084                 ServerInstance->WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a.maxlocal, this->GetIPString());
1085                 return;
1086         }
1087         else if (this->GlobalCloneCount() > a.maxglobal)
1088         {
1089                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (global)");
1090                 ServerInstance->WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a.maxglobal, this->GetIPString());
1091                 return;
1092         }
1093
1094         ELine* e = ServerInstance->XLines->matches_exception(this);
1095
1096         if (!e)
1097         {
1098                 GLine* r = ServerInstance->XLines->matches_gline(this);
1099
1100                 if (r)
1101                 {
1102                         char reason[MAXBUF];
1103                         snprintf(reason,MAXBUF,"G-Lined: %s",r->reason);
1104                         Goners->AddItem(this, reason);
1105                         return;
1106                 }
1107
1108                 KLine* n = ServerInstance->XLines->matches_kline(this);
1109
1110                 if (n)
1111                 {
1112                         char reason[MAXBUF];
1113                         snprintf(reason,MAXBUF,"K-Lined: %s",n->reason);
1114                         Goners->AddItem(this, reason);
1115                         return;
1116                 }
1117         }
1118
1119
1120         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
1121         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
1122         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
1123         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
1124         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());
1125
1126         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
1127         // so i'd better split it :)
1128         std::stringstream out(ServerInstance->Config->data005);
1129         std::string token = "";
1130         std::string line5 = "";
1131         int token_counter = 0;
1132
1133         while (!out.eof())
1134         {
1135                 out >> token;
1136                 line5 = line5 + token + " ";
1137                 token_counter++;
1138
1139                 if ((token_counter >= 13) || (out.eof() == true))
1140                 {
1141                         this->WriteServ("005 %s %s:are supported by this server", this->nick, line5.c_str());
1142                         line5 = "";
1143                         token_counter = 0;
1144                 }
1145         }
1146
1147         this->ShowMOTD();
1148
1149         /*
1150          * fix 3 by brain, move registered = 7 below these so that spurious modes and host
1151          * changes dont go out onto the network and produce 'fake direction'.
1152          */
1153         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
1154
1155         this->registered = REG_ALL;
1156
1157         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
1158
1159         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString());
1160 }
1161
1162 /** userrec::UpdateNick()
1163  * re-allocates a nick in the user_hash after they change nicknames,
1164  * returns a pointer to the new user as it may have moved
1165  */
1166 userrec* userrec::UpdateNickHash(const char* New)
1167 {
1168         try
1169         {
1170                 //user_hash::iterator newnick;
1171                 user_hash::iterator oldnick = ServerInstance->clientlist.find(this->nick);
1172
1173                 if (!strcasecmp(this->nick,New))
1174                         return oldnick->second;
1175
1176                 if (oldnick == ServerInstance->clientlist.end())
1177                         return NULL; /* doesnt exist */
1178
1179                 userrec* olduser = oldnick->second;
1180                 ServerInstance->clientlist[New] = olduser;
1181                 ServerInstance->clientlist.erase(oldnick);
1182                 return ServerInstance->clientlist[New];
1183         }
1184
1185         catch (...)
1186         {
1187                 ServerInstance->Log(DEBUG,"Exception in userrec::UpdateNickHash()");
1188                 return NULL;
1189         }
1190 }
1191
1192 bool userrec::ForceNickChange(const char* newnick)
1193 {
1194         try
1195         {
1196                 int MOD_RESULT = 0;
1197
1198                 FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1199
1200                 if (MOD_RESULT)
1201                 {
1202                         ServerInstance->stats->statsCollisions++;
1203                         return false;
1204                 }
1205
1206                 if (ServerInstance->XLines->matches_qline(newnick))
1207                 {
1208                         ServerInstance->stats->statsCollisions++;
1209                         return false;
1210                 }
1211
1212                 if (this->registered == REG_ALL)
1213                 {
1214                         const char* pars[1];
1215                         pars[0] = newnick;
1216                         std::string cmd = "NICK";
1217                         return (ServerInstance->Parser->CallHandler(cmd, pars, 1, this) == CMD_SUCCESS);
1218                 }
1219                 return false;
1220         }
1221
1222         catch (...)
1223         {
1224                 ServerInstance->Log(DEBUG,"Exception in userrec::ForceNickChange()");
1225                 return false;
1226         }
1227 }
1228
1229 void userrec::SetSockAddr(int protocol_family, const char* ip, int port)
1230 {
1231         switch (protocol_family)
1232         {
1233 #ifdef SUPPORT_IP6LINKS
1234                 case AF_INET6:
1235                 {
1236                         ServerInstance->Log(DEBUG,"Set inet6 protocol address");
1237                         sockaddr_in6* sin = new sockaddr_in6;
1238                         sin->sin6_family = AF_INET6;
1239                         sin->sin6_port = port;
1240                         inet_pton(AF_INET6, ip, &sin->sin6_addr);
1241                         this->ip = (sockaddr*)sin;
1242                 }
1243                 break;
1244 #endif
1245                 case AF_INET:
1246                 {
1247                         ServerInstance->Log(DEBUG,"Set inet4 protocol address");
1248                         sockaddr_in* sin = new sockaddr_in;
1249                         sin->sin_family = AF_INET;
1250                         sin->sin_port = port;
1251                         inet_pton(AF_INET, ip, &sin->sin_addr);
1252                         this->ip = (sockaddr*)sin;
1253                 }
1254                 break;
1255                 default:
1256                         ServerInstance->Log(DEBUG,"Ut oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1257                 break;
1258         }
1259 }
1260
1261 int userrec::GetPort()
1262 {
1263         if (this->ip == NULL)
1264                 return 0;
1265
1266         switch (this->GetProtocolFamily())
1267         {
1268 #ifdef SUPPORT_IP6LINKS
1269                 case AF_INET6:
1270                 {
1271                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1272                         return sin->sin6_port;
1273                 }
1274                 break;
1275 #endif
1276                 case AF_INET:
1277                 {
1278                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1279                         return sin->sin_port;
1280                 }
1281                 break;
1282                 default:
1283                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1284                 break;
1285         }
1286         return 0;
1287 }
1288
1289 int userrec::GetProtocolFamily()
1290 {
1291         if (this->ip == NULL)
1292                 return 0;
1293
1294         sockaddr_in* sin = (sockaddr_in*)this->ip;
1295         return sin->sin_family;
1296 }
1297
1298 const char* userrec::GetIPString()
1299 {
1300         static char buf[1024];
1301
1302         if (this->ip == NULL)
1303                 return "";
1304
1305         switch (this->GetProtocolFamily())
1306         {
1307 #ifdef SUPPORT_IP6LINKS
1308                 case AF_INET6:
1309                 {
1310                         static char temp[1024];
1311
1312                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1313                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1314                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1315                         if (*buf == ':')
1316                         {
1317                                 strlcpy(&temp[1], buf, sizeof(temp));
1318                                 *temp = '0';
1319                                 return temp;
1320                         }
1321                         return buf;
1322                 }
1323                 break;
1324 #endif
1325                 case AF_INET:
1326                 {
1327                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1328                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1329                         return buf;
1330                 }
1331                 break;
1332                 default:
1333                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1334                 break;
1335         }
1336         return "";
1337 }
1338
1339 const char* userrec::GetIPString(char* buf)
1340 {
1341         if (this->ip == NULL)
1342         {
1343                 *buf = 0;
1344                 return buf;
1345         }
1346
1347         switch (this->GetProtocolFamily())
1348         {
1349 #ifdef SUPPORT_IP6LINKS
1350                 case AF_INET6:
1351                 {
1352                         static char temp[1024];
1353
1354                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1355                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1356                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1357                         if (*buf == ':')
1358                         {
1359                                 strlcpy(&temp[1], buf, sizeof(temp));
1360                                 *temp = '0';
1361                                 strlcpy(buf, temp, sizeof(temp));
1362                         }
1363                         return buf;
1364                 }
1365                 break;
1366 #endif
1367                 case AF_INET:
1368                 {
1369                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1370                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1371                         return buf;
1372                 }
1373                 break;
1374
1375                 default:
1376                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1377                 break;
1378         }
1379         return "";
1380 }
1381
1382 /** NOTE: We cannot pass a const reference to this method.
1383  * The string is changed by the workings of the method,
1384  * so that if we pass const ref, we end up copying it to
1385  * something we can change anyway. Makes sense to just let
1386  * the compiler do that copy for us.
1387  */
1388 void userrec::Write(std::string text)
1389 {
1390         if ((this->fd < 0) || (this->fd > MAX_DESCRIPTORS))
1391                 return;
1392
1393         try
1394         {
1395                 text.append("\r\n");
1396         }
1397         catch (...)
1398         {
1399                 ServerInstance->Log(DEBUG,"Exception in userrec::Write() std::string::append");
1400                 return;
1401         }
1402
1403         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1404         {
1405                 try
1406                 {
1407                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length());
1408                 }
1409                 catch (ModuleException& modexcept)
1410                 {
1411                         ServerInstance->Log(DEBUG,"Module exception caught: %s",modexcept.GetReason());
1412                 }
1413         }
1414         else
1415         {
1416                 this->AddWriteBuf(text);
1417         }
1418         ServerInstance->stats->statsSent += text.length();
1419 }
1420
1421 /** Write()
1422  */
1423 void userrec::Write(const char *text, ...)
1424 {
1425         va_list argsPtr;
1426         char textbuffer[MAXBUF];
1427
1428         va_start(argsPtr, text);
1429         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1430         va_end(argsPtr);
1431
1432         this->Write(std::string(textbuffer));
1433 }
1434
1435 void userrec::WriteServ(const std::string& text)
1436 {
1437         char textbuffer[MAXBUF];
1438
1439         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1440         this->Write(std::string(textbuffer));
1441 }
1442
1443 /** WriteServ()
1444  *  Same as Write(), except `text' is prefixed with `:server.name '.
1445  */
1446 void userrec::WriteServ(const char* text, ...)
1447 {
1448         va_list argsPtr;
1449         char textbuffer[MAXBUF];
1450
1451         va_start(argsPtr, text);
1452         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1453         va_end(argsPtr);
1454
1455         this->WriteServ(std::string(textbuffer));
1456 }
1457
1458
1459 void userrec::WriteFrom(userrec *user, const std::string &text)
1460 {
1461         char tb[MAXBUF];
1462
1463         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1464
1465         this->Write(std::string(tb));
1466 }
1467
1468
1469 /* write text from an originating user to originating user */
1470
1471 void userrec::WriteFrom(userrec *user, const char* text, ...)
1472 {
1473         va_list argsPtr;
1474         char textbuffer[MAXBUF];
1475
1476         va_start(argsPtr, text);
1477         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1478         va_end(argsPtr);
1479
1480         this->WriteFrom(user, std::string(textbuffer));
1481 }
1482
1483
1484 /* write text to an destination user from a source user (e.g. user privmsg) */
1485
1486 void userrec::WriteTo(userrec *dest, const char *data, ...)
1487 {
1488         char textbuffer[MAXBUF];
1489         va_list argsPtr;
1490
1491         va_start(argsPtr, data);
1492         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1493         va_end(argsPtr);
1494
1495         this->WriteTo(dest, std::string(textbuffer));
1496 }
1497
1498 void userrec::WriteTo(userrec *dest, const std::string &data)
1499 {
1500         dest->WriteFrom(this, data);
1501 }
1502
1503
1504 void userrec::WriteCommon(const char* text, ...)
1505 {
1506         char textbuffer[MAXBUF];
1507         va_list argsPtr;
1508
1509         if (this->registered != REG_ALL)
1510                 return;
1511
1512         va_start(argsPtr, text);
1513         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1514         va_end(argsPtr);
1515
1516         this->WriteCommon(std::string(textbuffer));
1517 }
1518
1519 void userrec::WriteCommon(const std::string &text)
1520 {
1521         try
1522         {
1523                 bool sent_to_at_least_one = false;
1524
1525                 if (this->registered != REG_ALL)
1526                         return;
1527
1528                 uniq_id++;
1529
1530                 for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1531                 {
1532                         ucrec *n = *v;
1533                         if (n->channel)
1534                         {
1535                                 CUList *ulist= n->channel->GetUsers();
1536
1537                                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1538                                 {
1539                                         if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1540                                         {
1541                                                 already_sent[i->second->fd] = uniq_id;
1542                                                 i->second->WriteFrom(this, std::string(text));
1543                                                 sent_to_at_least_one = true;
1544                                         }
1545                                 }
1546                         }
1547                 }
1548
1549                 /*
1550                  * if the user was not in any channels, no users will receive the text. Make sure the user
1551                  * receives their OWN message for WriteCommon
1552                  */
1553                 if (!sent_to_at_least_one)
1554                 {
1555                         this->WriteFrom(this,std::string(text));
1556                 }
1557         }
1558
1559         catch (...)
1560         {
1561                 ServerInstance->Log(DEBUG,"Exception in userrec::WriteCommon()");
1562         }
1563 }
1564
1565
1566 /* write a formatted string to all users who share at least one common
1567  * channel, NOT including the source user e.g. for use in QUIT
1568  */
1569
1570 void userrec::WriteCommonExcept(const char* text, ...)
1571 {
1572         char textbuffer[MAXBUF];
1573         va_list argsPtr;
1574
1575         va_start(argsPtr, text);
1576         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1577         va_end(argsPtr);
1578
1579         this->WriteCommonExcept(std::string(textbuffer));
1580 }
1581
1582 void userrec::WriteCommonExcept(const std::string &text)
1583 {
1584         bool quit_munge = false;
1585         char oper_quit[MAXBUF];
1586         char textbuffer[MAXBUF];
1587
1588         strlcpy(textbuffer, text.c_str(), MAXBUF);
1589
1590         if (this->registered != REG_ALL)
1591                 return;
1592
1593         uniq_id++;
1594
1595         /* TODO: We need some form of WriteCommonExcept that will send two lines, one line to
1596          * opers and the other line to non-opers, then all this hidebans and hidesplits gunk
1597          * can go byebye.
1598          */
1599         if (ServerInstance->Config->HideSplits)
1600         {
1601                 char* check = textbuffer + 6;
1602
1603                 if (!strncasecmp(textbuffer, "QUIT :",6))
1604                 {
1605                         std::stringstream split(check);
1606                         std::string server_one;
1607                         std::string server_two;
1608
1609                         split >> server_one;
1610                         split >> server_two;
1611
1612                         if ((ServerInstance->FindServerName(server_one)) && (ServerInstance->FindServerName(server_two)))
1613                         {
1614                                 strlcpy(oper_quit,textbuffer,MAXQUIT);
1615                                 strlcpy(check,"*.net *.split",MAXQUIT);
1616                                 quit_munge = true;
1617                         }
1618                 }
1619         }
1620
1621         if ((ServerInstance->Config->HideBans) && (!quit_munge))
1622         {
1623                 if ((!strncasecmp(textbuffer, "QUIT :G-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :K-Lined:",14))
1624                 || (!strncasecmp(textbuffer, "QUIT :Q-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :Z-Lined:",14)))
1625                 {
1626                         char* check = textbuffer + 13;
1627                         strlcpy(oper_quit,textbuffer,MAXQUIT);
1628                         *check = 0;  // We don't need to strlcpy, we just chop it from the :
1629                         quit_munge = true;
1630                 }
1631         }
1632
1633         for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1634         {
1635                 ucrec* n = *v;
1636                 if (n->channel)
1637                 {
1638                         CUList *ulist= n->channel->GetUsers();
1639
1640                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1641                         {
1642                                 if (this != i->second)
1643                                 {
1644                                         if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1645                                         {
1646                                                 already_sent[i->second->fd] = uniq_id;
1647                                                 if (quit_munge)
1648                                                         i->second->WriteFrom(this, *i->second->oper ? std::string(oper_quit) : std::string(textbuffer));
1649                                                 else
1650                                                         i->second->WriteFrom(this, std::string(textbuffer));
1651                                         }
1652                                 }
1653                         }
1654                 }
1655         }
1656
1657 }
1658
1659 void userrec::WriteWallOps(const std::string &text)
1660 {
1661         /* Does nothing if theyre not opered */
1662         if ((!*this->oper) && (IS_LOCAL(this)))
1663                 return;
1664
1665         std::string wallop = "WALLOPS :";
1666
1667         try
1668         {
1669                 wallop.append(text);
1670         }
1671         catch (...)
1672         {
1673                 ServerInstance->Log(DEBUG,"Exception in userrec::Write() std::string::append");
1674                 return;
1675         }
1676
1677         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1678         {
1679                 userrec* t = *i;
1680                 if ((IS_LOCAL(t)) && (t->modes[UM_WALLOPS]))
1681                         this->WriteTo(t,wallop);
1682         }
1683 }
1684
1685 void userrec::WriteWallOps(const char* text, ...)
1686 {
1687         char textbuffer[MAXBUF];
1688         va_list argsPtr;
1689
1690         va_start(argsPtr, text);
1691         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1692         va_end(argsPtr);
1693
1694         this->WriteWallOps(std::string(textbuffer));
1695 }
1696
1697 /* return 0 or 1 depending if users u and u2 share one or more common channels
1698  * (used by QUIT, NICK etc which arent channel specific notices)
1699  *
1700  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1701  * the first users channels then the second users channels within the outer loop,
1702  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1703  * all possible iterations). However this new function instead checks against the
1704  * channel's userlist in the inner loop which is a std::map<userrec*,userrec*>
1705  * and saves us time as we already know what pointer value we are after.
1706  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1707  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1708  */
1709 bool userrec::SharesChannelWith(userrec *other)
1710 {
1711         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1712                 return false;
1713
1714         /* Outer loop */
1715         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1716         {
1717                 /* Fetch the channel from the user */
1718                 ucrec* user_channel = *i;
1719
1720                 if (user_channel->channel)
1721                 {
1722                         /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1723                          * by replacing it with a map::find which *should* be more efficient
1724                          */
1725                         if (user_channel->channel->HasUser(other))
1726                                 return true;
1727                 }
1728         }
1729         return false;
1730 }
1731
1732 int userrec::CountChannels()
1733 {
1734         return ChannelCount;
1735 }
1736
1737 void userrec::ModChannelCount(int n)
1738 {
1739         ChannelCount += n;
1740 }
1741
1742 bool userrec::ChangeName(const char* gecos)
1743 {
1744         if (!strcmp(gecos, this->fullname))
1745                 return true;
1746
1747         if (IS_LOCAL(this))
1748         {
1749                 int MOD_RESULT = 0;
1750                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1751                 if (MOD_RESULT)
1752                         return false;
1753                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1754         }
1755         strlcpy(this->fullname,gecos,MAXGECOS+1);
1756         return true;
1757 }
1758
1759 bool userrec::ChangeDisplayedHost(const char* host)
1760 {
1761         if (!strcmp(host, this->dhost))
1762                 return true;
1763
1764         if (IS_LOCAL(this))
1765         {
1766                 int MOD_RESULT = 0;
1767                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host));
1768                 if (MOD_RESULT)
1769                         return false;
1770                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host));
1771         }
1772         if (this->ServerInstance->Config->CycleHosts)
1773                 this->WriteCommonExcept("%s","QUIT :Changing hosts");
1774
1775         strlcpy(this->dhost,host,63);
1776
1777         if (this->ServerInstance->Config->CycleHosts)
1778         {
1779                 for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1780                 {
1781                         if ((*i)->channel)
1782                         {
1783                                 (*i)->channel->WriteAllExceptSender(this, false, 0, "JOIN %s", (*i)->channel->name);
1784                                 std::string n = this->ServerInstance->Modes->ModeString(this, (*i)->channel);
1785                                 if (n.length() > 0)
1786                                         (*i)->channel->WriteAllExceptSender(this, true, 0, "MODE %s +%s", (*i)->channel->name, n.c_str());
1787                         }
1788                 }
1789         }
1790
1791         if (IS_LOCAL(this))
1792                 this->WriteServ("396 %s %s :is now your hidden host",this->nick,this->dhost);
1793
1794         return true;
1795 }
1796
1797 bool userrec::ChangeIdent(const char* newident)
1798 {
1799         if (!strcmp(newident, this->ident))
1800                 return true;
1801
1802         if (this->ServerInstance->Config->CycleHosts)
1803                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1804
1805         strlcpy(this->ident, newident, IDENTMAX+2);
1806
1807         if (this->ServerInstance->Config->CycleHosts)
1808         {
1809                 for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1810                 {
1811                         if ((*i)->channel)
1812                         {
1813                                 (*i)->channel->WriteAllExceptSender(this, false, 0, "JOIN %s", (*i)->channel->name);
1814                                 std::string n = this->ServerInstance->Modes->ModeString(this, (*i)->channel);
1815                                 if (n.length() > 0)
1816                                         (*i)->channel->WriteAllExceptSender(this, true, 0, "MODE %s +%s", (*i)->channel->name, n.c_str());
1817                         }
1818                 }
1819         }
1820
1821         return true;
1822 }
1823
1824 void userrec::NoticeAll(char* text, ...)
1825 {
1826         char textbuffer[MAXBUF];
1827         char formatbuffer[MAXBUF];
1828         va_list argsPtr;
1829
1830         va_start(argsPtr, text);
1831         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1832         va_end(argsPtr);
1833
1834         snprintf(formatbuffer,MAXBUF,"NOTICE $* :%s",textbuffer);
1835
1836         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1837         {
1838                 userrec* t = *i;
1839                 t->WriteFrom(this, std::string(formatbuffer));
1840         }
1841 }
1842
1843
1844 std::string userrec::ChannelList(userrec* source)
1845 {
1846         try
1847         {
1848                 std::string list;
1849                 for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1850                 {
1851                         ucrec* rec = *i;
1852
1853                         if(rec->channel && rec->channel->name)
1854                         {
1855                                 /* If the target is the same as the sender, let them see all their channels.
1856                                  * If the channel is NOT private/secret OR the user shares a common channel
1857                                  * If the user is an oper, and the <options:operspywhois> option is set.
1858                                  */
1859                                 if ((source == this) || (*source->oper && ServerInstance->Config->OperSpyWhois) || (((!rec->channel->modes[CM_PRIVATE]) && (!rec->channel->modes[CM_SECRET])) || (rec->channel->HasUser(source))))
1860                                 {
1861                                         list.append(rec->channel->GetPrefixChar(this)).append(rec->channel->name).append(" ");
1862                                 }
1863                         }
1864                 }
1865                 return list;
1866         }
1867         catch (...)
1868         {
1869                 ServerInstance->Log(DEBUG,"Exception in userrec::ChannelList()");
1870                 return "";
1871         }
1872 }
1873
1874 void userrec::SplitChanList(userrec* dest, const std::string &cl)
1875 {
1876         std::string line;
1877         std::ostringstream prefix;
1878         std::string::size_type start, pos, length;
1879
1880         try
1881         {
1882                 prefix << ":" << ServerInstance->Config->ServerName << " 319 " << this->nick << " " << dest->nick << " :";
1883                 line = prefix.str();
1884
1885                 for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1886                 {
1887                         length = (pos == std::string::npos) ? cl.length() : pos;
1888
1889                         if (line.length() + length - start > 510)
1890                         {
1891                                 this->Write(line);
1892                                 line = prefix.str();
1893                         }
1894
1895                         if(pos == std::string::npos)
1896                         {
1897                                 line.append(cl.substr(start, length - start));
1898                                 break;
1899                         }
1900                         else
1901                         {
1902                                 line.append(cl.substr(start, length - start + 1));
1903                         }
1904                 }
1905
1906                 if (line.length())
1907                 {
1908                         this->Write(line);
1909                 }
1910         }
1911
1912         catch (...)
1913         {
1914                 ServerInstance->Log(DEBUG,"Exception in userrec::SplitChanList()");
1915         }
1916 }
1917
1918
1919 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1920  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1921  * then their ip will be taken as 'priority' anyway, so for example,
1922  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1923  */
1924 ConnectClass& userrec::GetClass()
1925 {
1926         for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1927         {
1928                 if ((match(this->GetIPString(),i->host.c_str(),true)) || (match(this->host,i->host.c_str())))
1929                         return *i;
1930         }
1931
1932         return *(ServerInstance->Config->Classes.begin());
1933 }
1934
1935 void userrec::PurgeEmptyChannels()
1936 {
1937         std::vector<chanrec*> to_delete;
1938
1939         // firstly decrement the count on each channel
1940         for (std::vector<ucrec*>::iterator f = this->chans.begin(); f != this->chans.end(); f++)
1941         {
1942                 ucrec* uc = *f;
1943                 if (uc->channel)
1944                 {
1945                         uc->channel->RemoveAllPrefixes(this);
1946                         if (uc->channel->DelUser(this) == 0)
1947                         {
1948                                 /* No users left in here, mark it for deletion */
1949                                 try
1950                                 {
1951                                         to_delete.push_back(uc->channel);
1952                                 }
1953                                 catch (...)
1954                                 {
1955                                         ServerInstance->Log(DEBUG,"Exception in userrec::PurgeEmptyChannels to_delete.push_back()");
1956                                 }
1957                                 uc->channel = NULL;
1958                         }
1959                 }
1960         }
1961
1962         for (std::vector<chanrec*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1963         {
1964                 chanrec* thischan = *n;
1965                 chan_hash::iterator i2 = ServerInstance->chanlist.find(thischan->name);
1966                 if (i2 != ServerInstance->chanlist.end())
1967                 {
1968                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1969                         DELETE(i2->second);
1970                         ServerInstance->chanlist.erase(i2);
1971                 }
1972         }
1973
1974         this->UnOper();
1975 }
1976
1977 void userrec::ShowMOTD()
1978 {
1979         if (!ServerInstance->Config->MOTD.size())
1980         {
1981                 this->WriteServ("422 %s :Message of the day file is missing.",this->nick);
1982                 return;
1983         }
1984         this->WriteServ("375 %s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1985
1986         for (unsigned int i = 0; i < ServerInstance->Config->MOTD.size(); i++)
1987                 this->WriteServ("372 %s :- %s",this->nick,ServerInstance->Config->MOTD[i].c_str());
1988
1989         this->WriteServ("376 %s :End of message of the day.", this->nick);
1990 }
1991
1992 void userrec::ShowRULES()
1993 {
1994         if (!ServerInstance->Config->RULES.size())
1995         {
1996                 this->WriteServ("NOTICE %s :Rules file is missing.",this->nick);
1997                 return;
1998         }
1999         this->WriteServ("NOTICE %s :%s rules",this->nick,ServerInstance->Config->ServerName);
2000
2001         for (unsigned int i = 0; i < ServerInstance->Config->RULES.size(); i++)
2002                 this->WriteServ("NOTICE %s :%s",this->nick,ServerInstance->Config->RULES[i].c_str());
2003
2004         this->WriteServ("NOTICE %s :End of %s rules.",this->nick,ServerInstance->Config->ServerName);
2005 }
2006
2007 void userrec::HandleEvent(EventType et)
2008 {
2009         /* WARNING: May delete this user! */
2010         try
2011         {
2012                 ServerInstance->ProcessUser(this);
2013         }
2014         catch (...)
2015         {
2016                 ServerInstance->Log(DEBUG,"Exception in userrec::HandleEvent intercepted");
2017         }
2018 }
2019