src/users.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
   6  *                     E-mail:
   7  *              <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *          the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 #include "inspircd_config.h"
  18 #include "configreader.h"
  19 #include "channels.h"
  20 #include "connection.h"
  21 #include "users.h"
  22 #include "inspircd.h"
  23 #include <stdarg.h>
  24 #include "inspstring.h"
  25 #include "commands.h"
  26
  27 #include "typedefs.h"
  28 #include "socketengine.h"
  29 #include "hashcomp.h"
  30 #include "wildcard.h"
  31 #include "xline.h"
  32 #include "cull_list.h"
  33
  34 irc::whowas::whowas_users whowas;
  35 static unsigned long already_sent[MAX_DESCRIPTORS] = {0};
  36
  37 typedef std::map<irc::string,char*> opertype_t;
  38 typedef opertype_t operclass_t;
  39
  40 opertype_t opertypes;
  41 operclass_t operclass;
  42
  43 /* XXX: Used for speeding up WriteCommon operations */
  44 unsigned long uniq_id = 0;
  45
  46 bool InitTypes(ServerConfig* conf, const char* tag)
  47 {
  48         for (opertype_t::iterator n = opertypes.begin(); n != opertypes.end(); n++)
  49         {
  50                 if (n->second)
  51                         delete[] n->second;
  52         }
  53
  54         opertypes.clear();
  55         return true;
  56 }
  57
  58 bool InitClasses(ServerConfig* conf, const char* tag)
  59 {
  60         for (operclass_t::iterator n = operclass.begin(); n != operclass.end(); n++)
  61         {
  62                 if (n->second)
  63                         delete[] n->second;
  64         }
  65
  66         operclass.clear();
  67         return true;
  68 }
  69
  70 bool DoType(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
  71 {
  72         char* TypeName = (char*)values[0];
  73         char* Classes = (char*)values[1];
  74
  75         opertypes[TypeName] = strdup(Classes);
  76         conf->GetInstance()->Log(DEBUG,"Read oper TYPE '%s' with classes '%s'",TypeName,Classes);
  77         return true;
  78 }
  79
  80 bool DoClass(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
  81 {
  82         char* ClassName = (char*)values[0];
  83         char* CommandList = (char*)values[1];
  84
  85         operclass[ClassName] = strdup(CommandList);
  86         conf->GetInstance()->Log(DEBUG,"Read oper CLASS '%s' with commands '%s'",ClassName,CommandList);
  87         return true;
  88 }
  89
  90 bool DoneClassesAndTypes(ServerConfig* conf, const char* tag)
  91 {
  92         return true;
  93 }
  94
  95 std::string userrec::ProcessNoticeMasks(const char *sm)
  96 {
  97         bool adding = true, oldadding = false;
  98         const char *c = sm;
  99         std::string output = "";
 100
 101         ServerInstance->Log(DEBUG,"Process notice masks");
 102
 103         while (c && *c)
 104         {
 105                 ServerInstance->Log(DEBUG,"Process notice mask %c",*c);
 106
 107                 switch (*c)
 108                 {
 109                         case '+':
 110                                 adding = true;
 111                         break;
 112                         case '-':
 113                                 adding = false;
 114                         break;
 115                         default:
 116                                 if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c)))
 117                                 {
 118                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
 119                                         {
 120                                                 if ((oldadding != adding) || (sm == c))
 121                                                         output += (adding ? '+' : '-');
 122
 123                                                 this->SetNoticeMask(*c, adding);
 124
 125                                                 output += *c;
 126                                         }
 127                                 }
 128                                 oldadding = adding;
 129                         break;
 130                 }
 131
 132                 *c++;
 133         }
 134
 135         return output;
 136 }
 137
 138 void userrec::StartDNSLookup()
 139 {
 140         ServerInstance->Log(DEBUG,"Commencing reverse lookup");
 141         try
 142         {
 143                 ServerInstance->Log(DEBUG,"Passing instance: %08x",this->ServerInstance);
 144                 res_reverse = new UserResolver(this->ServerInstance, this, this->GetIPString(), false);
 145                 this->ServerInstance->AddResolver(res_reverse);
 146         }
 147         catch (ModuleException& e)
 148         {
 149                 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
 150         }
 151 }
 152
 153 UserResolver::UserResolver(InspIRCd* Instance, userrec* user, std::string to_resolve, bool forward) :
 154         Resolver(Instance, to_resolve, forward ? DNS_QUERY_FORWARD : DNS_QUERY_REVERSE), bound_user(user)
 155 {
 156         this->fwd = forward;
 157         this->bound_fd = user->GetFd();
 158 }
 159
 160 void UserResolver::OnLookupComplete(const std::string &result)
 161 {
 162         if ((!this->fwd) && (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user))
 163         {
 164                 ServerInstance->Log(DEBUG,"Commencing forward lookup");
 165                 this->bound_user->stored_host = result;
 166                 try
 167                 {
 168                         /* Check we didnt time out */
 169                         if (this->bound_user->registered != REG_ALL)
 170                         {
 171                                 bound_user->res_forward = new UserResolver(this->ServerInstance, this->bound_user, result, true);
 172                                 this->ServerInstance->AddResolver(bound_user->res_forward);
 173                         }
 174                 }
 175                 catch (ModuleException& e)
 176                 {
 177                         ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
 178                 }
 179         }
 180         else if ((this->fwd) && (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user))
 181         {
 182                 /* Both lookups completed */
 183                 if (this->bound_user->GetIPString() == result)
 184                 {
 185                         std::string hostname = this->bound_user->stored_host;
 186                         if (hostname.length() < 65)
 187                         {
 188                                 /* Check we didnt time out */
 189                                 if (this->bound_user->registered != REG_ALL)
 190                                 {
 191                                         /* Hostnames starting with : are not a good thing (tm) */
 192                                         if (*(hostname.c_str()) == ':')
 193                                                 hostname = "0" + hostname;
 194
 195                                         this->bound_user->WriteServ("NOTICE Auth :*** Found your hostname (%s)", hostname.c_str());
 196                                         this->bound_user->dns_done = true;
 197                                         strlcpy(this->bound_user->dhost, hostname.c_str(),64);
 198                                         strlcpy(this->bound_user->host, hostname.c_str(),64);
 199                                 }
 200                         }
 201                         else
 202                         {
 203                                 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());
 204                         }
 205                 }
 206                 else
 207                 {
 208                         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());
 209                 }
 210         }
 211 }
 212
 213 void UserResolver::OnError(ResolverError e, const std::string &errormessage)
 214 {
 215         if (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user)
 216         {
 217                 /* Error message here */
 218                 this->bound_user->WriteServ("NOTICE Auth :*** Could not resolve your hostname, using your IP address (%s) instead.", this->bound_user->GetIPString());
 219                 this->bound_user->dns_done = true;
 220         }
 221 }
 222
 223
 224 bool userrec::IsNoticeMaskSet(unsigned char sm)
 225 {
 226         return (snomasks[sm-65]);
 227 }
 228
 229 void userrec::SetNoticeMask(unsigned char sm, bool value)
 230 {
 231         snomasks[sm-65] = value;
 232 }
 233
 234 const char* userrec::FormatNoticeMasks()
 235 {
 236         static char data[MAXBUF];
 237         int offset = 0;
 238
 239         for (int n = 0; n < 64; n++)
 240         {
 241                 if (snomasks[n])
 242                         data[offset++] = n+65;
 243         }
 244
 245         data[offset] = 0;
 246         return data;
 247 }
 248
 249
 250
 251 bool userrec::IsModeSet(unsigned char m)
 252 {
 253         return (modes[m-65]);
 254 }
 255
 256 void userrec::SetMode(unsigned char m, bool value)
 257 {
 258         modes[m-65] = value;
 259 }
 260
 261 const char* userrec::FormatModes()
 262 {
 263         static char data[MAXBUF];
 264         int offset = 0;
 265         for (int n = 0; n < 64; n++)
 266         {
 267                 if (modes[n])
 268                         data[offset++] = n+65;
 269         }
 270         data[offset] = 0;
 271         return data;
 272 }
 273
 274 userrec::userrec(InspIRCd* Instance) : ServerInstance(Instance)
 275 {
 276         ServerInstance->Log(DEBUG,"userrec::userrec(): Instance: %08x",ServerInstance);
 277         // the PROPER way to do it, AVOID bzero at *ALL* costs
 278         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = 0;
 279         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 280         reset_due = ServerInstance->Time();
 281         lines_in = lastping = signon = idle_lastmsg = nping = registered = 0;
 282         timeout = flood = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 283         haspassed = dns_done = false;
 284         fd = -1;
 285         recvq = "";
 286         sendq = "";
 287         WriteError = "";
 288         res_forward = res_reverse = NULL;
 289         ip = NULL;
 290         chans.clear();
 291         invites.clear();
 292         chans.resize(MAXCHANS);
 293         memset(modes,0,sizeof(modes));
 294         memset(snomasks,0,sizeof(snomasks));
 295
 296         for (unsigned int n = 0; n < MAXCHANS; n++)
 297         {
 298                 ucrec* x = new ucrec();
 299                 chans[n] = x;
 300                 x->channel = NULL;
 301                 x->uc_modes = 0;
 302         }
 303 }
 304
 305 userrec::~userrec()
 306 {
 307         for (std::vector<ucrec*>::iterator n = chans.begin(); n != chans.end(); n++)
 308         {
 309                 ucrec* x = (ucrec*)*n;
 310                 delete x;
 311         }
 312
 313         if (ip)
 314         {
 315                 if (this->GetProtocolFamily() == AF_INET)
 316                 {
 317                         delete (sockaddr_in*)ip;
 318                 }
 319 #ifdef SUPPORT_IP6LINKS
 320                 else
 321                 {
 322                         delete (sockaddr_in6*)ip;
 323                 }
 324 #endif
 325         }
 326 }
 327
 328 /* XXX - minor point, other *Host functions return a char *, this one creates it. Might be nice to be consistant? */
 329 void userrec::MakeHost(char* nhost)
 330 {
 331         /* This is much faster than snprintf */
 332         char* t = nhost;
 333         for(char* n = ident; *n; n++)
 334                 *t++ = *n;
 335         *t++ = '@';
 336         for(char* n = host; *n; n++)
 337                 *t++ = *n;
 338         *t = 0;
 339 }
 340
 341 void userrec::CloseSocket()
 342 {
 343         shutdown(this->fd,2);
 344         close(this->fd);
 345 }
 346
 347 char* userrec::GetFullHost()
 348 {
 349         static char result[MAXBUF];
 350         char* t = result;
 351         for(char* n = nick; *n; n++)
 352                 *t++ = *n;
 353         *t++ = '!';
 354         for(char* n = ident; *n; n++)
 355                 *t++ = *n;
 356         *t++ = '@';
 357         for(char* n = dhost; *n; n++)
 358                 *t++ = *n;
 359         *t = 0;
 360         return result;
 361 }
 362
 363 char* userrec::MakeWildHost()
 364 {
 365         static char nresult[MAXBUF];
 366         char* t = nresult;
 367         *t++ = '*';     *t++ = '!';
 368         *t++ = '*';     *t++ = '@';
 369         for(char* n = dhost; *n; n++)
 370                 *t++ = *n;
 371         *t = 0;
 372         return nresult;
 373 }
 374
 375 int userrec::ReadData(void* buffer, size_t size)
 376 {
 377         if (this->fd > -1)
 378         {
 379                 return read(this->fd, buffer, size);
 380         }
 381         else
 382                 return 0;
 383 }
 384
 385
 386 char* userrec::GetFullRealHost()
 387 {
 388         static char fresult[MAXBUF];
 389         char* t = fresult;
 390         for(char* n = nick; *n; n++)
 391                 *t++ = *n;
 392         *t++ = '!';
 393         for(char* n = ident; *n; n++)
 394                 *t++ = *n;
 395         *t++ = '@';
 396         for(char* n = host; *n; n++)
 397                 *t++ = *n;
 398         *t = 0;
 399         return fresult;
 400 }
 401
 402 bool userrec::IsInvited(irc::string &channel)
 403 {
 404         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 405         {
 406                 irc::string compare = i->channel;
 407
 408                 if (compare == channel)
 409                 {
 410                         return true;
 411                 }
 412         }
 413         return false;
 414 }
 415
 416 InvitedList* userrec::GetInviteList()
 417 {
 418         return &invites;
 419 }
 420
 421 void userrec::InviteTo(irc::string &channel)
 422 {
 423         Invited i;
 424         i.channel = channel;
 425         invites.push_back(i);
 426 }
 427
 428 void userrec::RemoveInvite(irc::string &channel)
 429 {
 430         ServerInstance->Log(DEBUG,"Removing invites");
 431
 432         if (invites.size())
 433         {
 434                 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 435                 {
 436                         irc::string compare = i->channel;
 437
 438                         if (compare == channel)
 439                         {
 440                                 invites.erase(i);
 441                                 return;
 442                         }
 443                 }
 444         }
 445 }
 446
 447 bool userrec::HasPermission(const std::string &command)
 448 {
 449         char* mycmd;
 450         char* savept;
 451         char* savept2;
 452
 453         /*
 454          * users on remote servers can completely bypass all permissions based checks.
 455          * This prevents desyncs when one server has different type/class tags to another.
 456          * That having been said, this does open things up to the possibility of source changes
 457          * allowing remote kills, etc - but if they have access to the src, they most likely have
 458          * access to the conf - so it's an end to a means either way.
 459          */
 460         if (!IS_LOCAL(this))
 461                 return true;
 462
 463         // are they even an oper at all?
 464         if (*this->oper)
 465         {
 466                 opertype_t::iterator iter_opertype = opertypes.find(this->oper);
 467                 if (iter_opertype != opertypes.end())
 468                 {
 469                         char* Classes = strdup(iter_opertype->second);
 470                         char* myclass = strtok_r(Classes," ",&savept);
 471                         while (myclass)
 472                         {
 473                                 operclass_t::iterator iter_operclass = operclass.find(myclass);
 474                                 if (iter_operclass != operclass.end())
 475                                 {
 476                                         char* CommandList = strdup(iter_operclass->second);
 477                                         mycmd = strtok_r(CommandList," ",&savept2);
 478                                         while (mycmd)
 479                                         {
 480                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 481                                                 {
 482                                                         free(Classes);
 483                                                         free(CommandList);
 484                                                         return true;
 485                                                 }
 486                                                 mycmd = strtok_r(NULL," ",&savept2);
 487                                         }
 488                                         free(CommandList);
 489                                 }
 490                                 myclass = strtok_r(NULL," ",&savept);
 491                         }
 492                         free(Classes);
 493                 }
 494         }
 495         return false;
 496 }
 497
 498 /** NOTE: We cannot pass a const reference to this method.
 499  * The string is changed by the workings of the method,
 500  * so that if we pass const ref, we end up copying it to
 501  * something we can change anyway. Makes sense to just let
 502  * the compiler do that copy for us.
 503  */
 504 bool userrec::AddBuffer(std::string a)
 505 {
 506         std::string::size_type i = a.rfind('\r');
 507
 508         while (i != std::string::npos)
 509         {
 510                 a.erase(i, 1);
 511                 i = a.rfind('\r');
 512         }
 513
 514         if (a.length())
 515                 recvq.append(a);
 516
 517         if (recvq.length() > (unsigned)this->recvqmax)
 518         {
 519                 this->SetWriteError("RecvQ exceeded");
 520                 ServerInstance->WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 521                 return false;
 522         }
 523
 524         return true;
 525 }
 526
 527 bool userrec::BufferIsReady()
 528 {
 529         return (recvq.find('\n') != std::string::npos);
 530 }
 531
 532 void userrec::ClearBuffer()
 533 {
 534         recvq = "";
 535 }
 536
 537 std::string userrec::GetBuffer()
 538 {
 539         if (!recvq.length())
 540                 return "";
 541
 542         /* Strip any leading \r or \n off the string.
 543          * Usually there are only one or two of these,
 544          * so its is computationally cheap to do.
 545          */
 546         while ((*recvq.begin() == '\r') || (*recvq.begin() == '\n'))
 547                 recvq.erase(recvq.begin());
 548
 549         for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 550         {
 551                 /* Find the first complete line, return it as the
 552                  * result, and leave the recvq as whats left
 553                  */
 554                 if (*x == '\n')
 555                 {
 556                         std::string ret = std::string(recvq.begin(), x);
 557                         recvq.erase(recvq.begin(), x + 1);
 558                         return ret;
 559                 }
 560         }
 561         return "";
 562 }
 563
 564 void userrec::AddWriteBuf(const std::string &data)
 565 {
 566         if (*this->GetWriteError())
 567                 return;
 568
 569         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 570         {
 571                 /*
 572                  * Fix by brain - Set the error text BEFORE calling writeopers, because
 573                  * if we dont it'll recursively  call here over and over again trying
 574                  * to repeatedly add the text to the sendq!
 575                  */
 576                 this->SetWriteError("SendQ exceeded");
 577                 ServerInstance->WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 578                 return;
 579         }
 580
 581         if (data.length() > 512)
 582         {
 583                 std::string newdata(data);
 584                 newdata.resize(510);
 585                 newdata.append("\r\n");
 586                 sendq.append(newdata);
 587         }
 588         else
 589         {
 590                 sendq.append(data);
 591         }
 592 }
 593
 594 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 595 void userrec::FlushWriteBuf()
 596 {
 597         if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 598         {
 599                 const char* tb = this->sendq.c_str();
 600                 int n_sent = write(this->fd,tb,this->sendq.length());
 601                 if (n_sent == -1)
 602                 {
 603                         if (errno != EAGAIN)
 604                                 this->SetWriteError(strerror(errno));
 605                 }
 606                 else
 607                 {
 608                         // advance the queue
 609                         tb += n_sent;
 610                         this->sendq = tb;
 611                         // update the user's stats counters
 612                         this->bytes_out += n_sent;
 613                         this->cmds_out++;
 614                 }
 615         }
 616 }
 617
 618 void userrec::SetWriteError(const std::string &error)
 619 {
 620         ServerInstance->Log(DEBUG,"SetWriteError: %s",error.c_str());
 621         // don't try to set the error twice, its already set take the first string.
 622         if (!this->WriteError.length())
 623         {
 624                 ServerInstance->Log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 625                 this->WriteError = error;
 626         }
 627 }
 628
 629 const char* userrec::GetWriteError()
 630 {
 631         return this->WriteError.c_str();
 632 }
 633
 634 void userrec::Oper(const std::string &opertype)
 635 {
 636         this->modes[UM_OPERATOR] = 1;
 637         this->WriteServ("MODE %s :+o", this->nick);
 638         FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 639         ServerInstance->Log(DEFAULT,"OPER: %s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 640         strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 641         ServerInstance->all_opers.push_back(this);
 642         FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype));
 643 }
 644
 645 void userrec::UnOper()
 646 {
 647         if (*this->oper)
 648         {
 649                 *this->oper = 0;
 650                 this->modes[UM_OPERATOR] = 0;
 651                 for (std::vector<userrec*>::iterator a = ServerInstance->all_opers.begin(); a < ServerInstance->all_opers.end(); a++)
 652                 {
 653                         if (*a == this)
 654                         {
 655                                 ServerInstance->Log(DEBUG,"Oper removed from optimization list");
 656                                 ServerInstance->all_opers.erase(a);
 657                                 return;
 658                         }
 659                 }
 660         }
 661 }
 662
 663 void userrec::QuitUser(InspIRCd* Instance, userrec *user,const std::string &quitreason)
 664 {
 665         user_hash::iterator iter = Instance->clientlist.find(user->nick);
 666
 667 /*
 668  * I'm pretty sure returning here is causing a desync when part of the net thinks a user is gone,
 669  * and another part doesn't. We want to broadcast the quit/kill before bailing so the net stays in sync.
 670  *
 671  * I can't imagine this blowing up, so I'm commenting it out. We still check
 672  * before playing with a bad iterator below in our if(). DISCUSS THIS BEFORE YOU DO ANYTHING. --w00t
 673  *
 674  *      if (iter == clientlist.end())
 675  *              return;
 676  */
 677         std::string reason = quitreason;
 678
 679         if (reason.length() > MAXQUIT - 1)
 680                 reason.resize(MAXQUIT - 1);
 681
 682         if (IS_LOCAL(user))
 683                 user->Write("ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason.c_str());
 684
 685         if (user->registered == REG_ALL)
 686         {
 687                 user->PurgeEmptyChannels();
 688                 FOREACH_MOD_I(Instance,I_OnUserQuit,OnUserQuit(user,reason));
 689                 user->WriteCommonExcept("QUIT :%s",reason.c_str());
 690         }
 691
 692         if (IS_LOCAL(user))
 693                 user->FlushWriteBuf();
 694
 695         FOREACH_MOD_I(Instance,I_OnUserDisconnect,OnUserDisconnect(user));
 696
 697         if (IS_LOCAL(user))
 698         {
 699                 if (Instance->Config->GetIOHook(user->GetPort()))
 700                 {
 701                         try
 702                         {
 703                                 Instance->Config->GetIOHook(user->GetPort())->OnRawSocketClose(user->fd);
 704                         }
 705                         catch (ModuleException& modexcept)
 706                         {
 707                                 Instance->Log(DEBUG,"Module exception cought: %s",modexcept.GetReason());
 708                         }
 709                 }
 710
 711                 Instance->SE->DelFd(user);
 712                 user->CloseSocket();
 713         }
 714
 715         /*
 716          * this must come before the ServerInstance->WriteOpers so that it doesnt try to fill their buffer with anything
 717          * if they were an oper with +s.
 718          *
 719          * XXX -
 720          * In the current implementation, we only show local quits, as we only show local connects. With
 721          * the proposed implmentation of snomasks however, this will likely change in the (near?) future.
 722          */
 723         if (user->registered == REG_ALL)
 724         {
 725                 if (IS_LOCAL(user))
 726                         Instance->WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason.c_str());
 727                 user->AddToWhoWas();
 728         }
 729
 730         if (iter != Instance->clientlist.end())
 731         {
 732                 Instance->Log(DEBUG,"deleting user hash value %lx",(unsigned long)user);
 733                 if (IS_LOCAL(user))
 734                 {
 735                         if (find(Instance->local_users.begin(),Instance->local_users.end(),user) != Instance->local_users.end())
 736                                 Instance->local_users.erase(find(Instance->local_users.begin(),Instance->local_users.end(),user));
 737                 }
 738                 Instance->clientlist.erase(iter);
 739                 DELETE(user);
 740         }
 741 }
 742
 743 namespace irc
 744 {
 745         namespace whowas
 746         {
 747
 748                 WhoWasGroup::WhoWasGroup(userrec* user) : host(NULL), dhost(NULL), ident(NULL), server(NULL), gecos(NULL), signon(user->signon)
 749                 {
 750                         this->host = strdup(user->host);
 751                         this->dhost = strdup(user->dhost);
 752                         this->ident = strdup(user->ident);
 753                         this->server = user->server;
 754                         this->gecos = strdup(user->fullname);
 755                 }
 756
 757                 WhoWasGroup::~WhoWasGroup()
 758                 {
 759                         if (host)
 760                                 free(host);
 761                         if (dhost)
 762                                 free(dhost);
 763                         if (ident)
 764                                 free(ident);
 765                         if (gecos)
 766                                 free(gecos);
 767                 }
 768
 769                 /* every hour, run this function which removes all entries over 3 days */
 770                 void MaintainWhoWas(time_t t)
 771                 {
 772                         for (whowas_users::iterator iter = ::whowas.begin(); iter != ::whowas.end(); iter++)
 773                         {
 774                                 whowas_set* n = (whowas_set*)iter->second;
 775                                 if (n->size())
 776                                 {
 777                                         while ((n->begin() != n->end()) && ((*n->begin())->signon < t - 259200)) // 3 days
 778                                         {
 779                                                 WhoWasGroup *a = *(n->begin());
 780                                                 DELETE(a);
 781                                                 n->erase(n->begin());
 782                                         }
 783                                 }
 784                         }
 785                 }
 786         };
 787 };
 788
 789 /* adds or updates an entry in the whowas list */
 790 void userrec::AddToWhoWas()
 791 {
 792         irc::whowas::whowas_users::iterator iter = whowas.find(this->nick);
 793
 794         if (iter == whowas.end())
 795         {
 796                 irc::whowas::whowas_set* n = new irc::whowas::whowas_set;
 797                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 798                 n->push_back(a);
 799                 whowas[this->nick] = n;
 800         }
 801         else
 802         {
 803                 irc::whowas::whowas_set* group = (irc::whowas::whowas_set*)iter->second;
 804
 805                 if (group->size() > 10)
 806                 {
 807                         irc::whowas::WhoWasGroup *a = (irc::whowas::WhoWasGroup*)*(group->begin());
 808                         DELETE(a);
 809                         group->pop_front();
 810                 }
 811
 812                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 813                 group->push_back(a);
 814         }
 815 }
 816
 817 /* add a client connection to the sockets list */
 818 void userrec::AddClient(InspIRCd* Instance, int socket, int port, bool iscached, insp_inaddr ip)
 819 {
 820         std::string tempnick = ConvToStr(socket) + "-unknown";
 821         user_hash::iterator iter = Instance->clientlist.find(tempnick);
 822         const char *ipaddr = insp_ntoa(ip);
 823         userrec* _new;
 824         int j = 0;
 825
 826         /*
 827          * fix by brain.
 828          * as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 829          * using one as a registered connection. As they are per fd, we can also safely assume
 830          * that we wont have collisions. Therefore, if the nick exists in the list, its only
 831          * used by a dead socket, erase the iterator so that the new client may reclaim it.
 832          * this was probably the cause of 'server ignores me when i hammer it with reconnects'
 833          * issue in earlier alphas/betas
 834          */
 835         if (iter != Instance->clientlist.end())
 836         {
 837                 userrec* goner = iter->second;
 838                 DELETE(goner);
 839                 Instance->clientlist.erase(iter);
 840         }
 841
 842         Instance->Log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr);
 843
 844         _new = new userrec(Instance);
 845         Instance->clientlist[tempnick] = _new;
 846         _new->fd = socket;
 847         strlcpy(_new->nick,tempnick.c_str(),NICKMAX-1);
 848
 849         _new->server = Instance->FindServerNamePtr(Instance->Config->ServerName);
 850         /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
 851         strcpy(_new->ident, "unknown");
 852
 853         _new->registered = REG_NONE;
 854         _new->signon = Instance->Time() + Instance->Config->dns_timeout;
 855         _new->lastping = 1;
 856
 857         Instance->Log(DEBUG,"Setting socket addresses");
 858         _new->SetSockAddr(AF_FAMILY, ipaddr, port);
 859         Instance->Log(DEBUG,"Socket addresses set.");
 860
 861         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
 862         for (const char* temp = _new->GetIPString(); *temp && j < 64; temp++, j++)
 863                 _new->dhost[j] = _new->host[j] = *temp;
 864         _new->dhost[j] = _new->host[j] = 0;
 865
 866         // set the registration timeout for this user
 867         unsigned long class_regtimeout = 90;
 868         int class_flood = 0;
 869         long class_threshold = 5;
 870         long class_sqmax = 262144;      // 256kb
 871         long class_rqmax = 4096;        // 4k
 872
 873         for (ClassVector::iterator i = Instance->Config->Classes.begin(); i != Instance->Config->Classes.end(); i++)
 874         {
 875                 if ((i->type == CC_ALLOW) && (match(ipaddr,i->host.c_str(),true)))
 876                 {
 877                         class_regtimeout = (unsigned long)i->registration_timeout;
 878                         class_flood = i->flood;
 879                         _new->pingmax = i->pingtime;
 880                         class_threshold = i->threshold;
 881                         class_sqmax = i->sendqmax;
 882                         class_rqmax = i->recvqmax;
 883                         break;
 884                 }
 885         }
 886
 887         _new->nping = Instance->Time() + _new->pingmax + Instance->Config->dns_timeout;
 888         _new->timeout = Instance->Time() + class_regtimeout;
 889         _new->flood = class_flood;
 890         _new->threshold = class_threshold;
 891         _new->sendqmax = class_sqmax;
 892         _new->recvqmax = class_rqmax;
 893
 894         Instance->local_users.push_back(_new);
 895
 896         if (Instance->local_users.size() > Instance->Config->SoftLimit)
 897         {
 898                 userrec::QuitUser(Instance, _new,"No more connections allowed");
 899                 return;
 900         }
 901
 902         if (Instance->local_users.size() >= MAXCLIENTS)
 903         {
 904                 userrec::QuitUser(Instance, _new,"No more connections allowed");
 905                 return;
 906         }
 907
 908         /*
 909          * XXX -
 910          * this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 911          * its a pretty big but for the moment valid assumption:
 912          * file descriptors are handed out starting at 0, and are recycled as theyre freed.
 913          * therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 914          * irc server at once (or the irc server otherwise initiating this many connections, files etc)
 915          * which for the time being is a physical impossibility (even the largest networks dont have more
 916          * than about 10,000 users on ONE server!)
 917          */
 918         if ((unsigned)socket >= MAX_DESCRIPTORS)
 919         {
 920                 userrec::QuitUser(Instance, _new,"Server is full");
 921                 return;
 922         }
 923         char* e = Instance->XLines->matches_exception(ipaddr);
 924         if (!e)
 925         {
 926                 char* r = Instance->XLines->matches_zline(ipaddr);
 927                 if (r)
 928                 {
 929                         char reason[MAXBUF];
 930                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
 931                         userrec::QuitUser(Instance, _new,reason);
 932                         return;
 933                 }
 934         }
 935
 936         if (socket > -1)
 937         {
 938                 if (!Instance->SE->AddFd(_new))
 939                 {
 940                         userrec::QuitUser(Instance, _new, "Internal error handling connection");
 941                         return;
 942                 }
 943         }
 944
 945         _new->WriteServ("NOTICE Auth :*** Looking up your hostname...");
 946 }
 947
 948 long userrec::GlobalCloneCount()
 949 {
 950         char u1[1024];
 951         char u2[1024];
 952         long x = 0;
 953         for (user_hash::const_iterator a = ServerInstance->clientlist.begin(); a != ServerInstance->clientlist.end(); a++)
 954         {
 955                 /* We have to match ip's as strings - we don't know what protocol
 956                  * a remote user may be using
 957                  */
 958                 if (!strcasecmp(a->second->GetIPString(u1), this->GetIPString(u2)))
 959                                 x++;
 960         }
 961         return x;
 962 }
 963
 964 long userrec::LocalCloneCount()
 965 {
 966         long x = 0;
 967         for (std::vector<userrec*>::const_iterator a = ServerInstance->local_users.begin(); a != ServerInstance->local_users.end(); a++)
 968         {
 969                 userrec* comp = *a;
 970 #ifdef IPV6
 971                 /* I dont think theres any faster way of matching two ipv6 addresses than memcmp */
 972                 in6_addr* s1 = &(((sockaddr_in6*)comp->ip)->sin6_addr);
 973                 in6_addr* s2 = &(((sockaddr_in6*)this->ip)->sin6_addr);
 974                 if (!memcmp(s1->s6_addr, s2->s6_addr, sizeof(in6_addr)))
 975                         x++;
 976 #else
 977                 in_addr* s1 = &((sockaddr_in*)comp->ip)->sin_addr;
 978                 in_addr* s2 = &((sockaddr_in*)this->ip)->sin_addr;
 979                 if (s1->s_addr == s2->s_addr)
 980                         x++;
 981 #endif
 982         }
 983         return x;
 984 }
 985
 986 void userrec::FullConnect(CullList* Goners)
 987 {
 988         ServerInstance->stats->statsConnects++;
 989         this->idle_lastmsg = ServerInstance->Time();
 990
 991         ConnectClass a = this->GetClass();
 992
 993         if (a.type == CC_DENY)
 994         {
 995                 Goners->AddItem(this,"Unauthorised connection");
 996                 return;
 997         }
 998
 999         if ((*(a.pass.c_str())) && (!this->haspassed))
1000         {
1001                 Goners->AddItem(this,"Invalid password");
1002                 return;
1003         }
1004
1005         if (this->LocalCloneCount() > a.maxlocal)
1006         {
1007                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (local)");
1008                 ServerInstance->WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a.maxlocal, this->GetIPString());
1009                 return;
1010         }
1011         else if (this->GlobalCloneCount() > a.maxglobal)
1012         {
1013                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (global)");
1014                 ServerInstance->WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a.maxglobal, this->GetIPString());
1015                 return;
1016         }
1017
1018         char match_against[MAXBUF];
1019         snprintf(match_against,MAXBUF,"%s@%s", this->ident, this->host);
1020         char* e = ServerInstance->XLines->matches_exception(match_against);
1021
1022         if (!e)
1023         {
1024                 char* r = ServerInstance->XLines->matches_gline(match_against);
1025
1026                 if (r)
1027                 {
1028                         char reason[MAXBUF];
1029                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
1030                         Goners->AddItem(this, reason);
1031                         return;
1032                 }
1033
1034                 r = ServerInstance->XLines->matches_kline(match_against);
1035
1036                 if (r)
1037                 {
1038                         char reason[MAXBUF];
1039                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
1040                         Goners->AddItem(this, reason);
1041                         return;
1042                 }
1043         }
1044
1045
1046         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
1047         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
1048         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
1049         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
1050         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());
1051
1052         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
1053         // so i'd better split it :)
1054         std::stringstream out(ServerInstance->Config->data005);
1055         std::string token = "";
1056         std::string line5 = "";
1057         int token_counter = 0;
1058
1059         while (!out.eof())
1060         {
1061                 out >> token;
1062                 line5 = line5 + token + " ";
1063                 token_counter++;
1064
1065                 if ((token_counter >= 13) || (out.eof() == true))
1066                 {
1067                         this->WriteServ("005 %s %s:are supported by this server", this->nick, line5.c_str());
1068                         line5 = "";
1069                         token_counter = 0;
1070                 }
1071         }
1072
1073         this->ShowMOTD();
1074
1075         /*
1076          * fix 3 by brain, move registered = 7 below these so that spurious modes and host
1077          * changes dont go out onto the network and produce 'fake direction'.
1078          */
1079         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
1080         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
1081         this->registered = REG_ALL;
1082         ServerInstance->WriteOpers("*** Client connecting on port %d: %s!%s@%s [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString());
1083 }
1084
1085 /** userrec::UpdateNick()
1086  * re-allocates a nick in the user_hash after they change nicknames,
1087  * returns a pointer to the new user as it may have moved
1088  */
1089 userrec* userrec::UpdateNickHash(const char* New)
1090 {
1091         //user_hash::iterator newnick;
1092         user_hash::iterator oldnick = ServerInstance->clientlist.find(this->nick);
1093
1094         if (!strcasecmp(this->nick,New))
1095                 return oldnick->second;
1096
1097         if (oldnick == ServerInstance->clientlist.end())
1098                 return NULL; /* doesnt exist */
1099
1100         userrec* olduser = oldnick->second;
1101         ServerInstance->clientlist[New] = olduser;
1102         ServerInstance->clientlist.erase(oldnick);
1103         return ServerInstance->clientlist[New];
1104 }
1105
1106 bool userrec::ForceNickChange(const char* newnick)
1107 {
1108         char nick[MAXBUF];
1109         int MOD_RESULT = 0;
1110
1111         *nick = 0;
1112
1113         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1114
1115         if (MOD_RESULT)
1116         {
1117                 ServerInstance->stats->statsCollisions++;
1118                 return false;
1119         }
1120
1121         if (ServerInstance->XLines->matches_qline(newnick))
1122         {
1123                 ServerInstance->stats->statsCollisions++;
1124                 return false;
1125         }
1126
1127         if (newnick)
1128         {
1129                 strlcpy(this->nick, newnick, NICKMAX - 1);
1130         }
1131         if (this->registered == REG_ALL)
1132         {
1133                 const char* pars[1];
1134                 pars[0] = nick;
1135                 std::string cmd = "NICK";
1136                 ServerInstance->Parser->CallHandler(cmd, pars, 1, this);
1137         }
1138         return true;
1139 }
1140
1141 void userrec::SetSockAddr(int protocol_family, const char* ip, int port)
1142 {
1143         switch (protocol_family)
1144         {
1145 #ifdef SUPPORT_IP6LINKS
1146                 case AF_INET6:
1147                 {
1148                         ServerInstance->Log(DEBUG,"Set inet6 protocol address");
1149                         sockaddr_in6* sin = new sockaddr_in6;
1150                         sin->sin6_family = AF_INET6;
1151                         sin->sin6_port = port;
1152                         inet_pton(AF_INET6, ip, &sin->sin6_addr);
1153                         this->ip = (sockaddr*)sin;
1154                 }
1155                 break;
1156 #endif
1157                 case AF_INET:
1158                 {
1159                         ServerInstance->Log(DEBUG,"Set inet4 protocol address");
1160                         sockaddr_in* sin = new sockaddr_in;
1161                         sin->sin_family = AF_INET;
1162                         sin->sin_port = port;
1163                         inet_pton(AF_INET, ip, &sin->sin_addr);
1164                         this->ip = (sockaddr*)sin;
1165                 }
1166                 break;
1167                 default:
1168                         ServerInstance->Log(DEBUG,"Ut oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1169                 break;
1170         }
1171 }
1172
1173 int userrec::GetPort()
1174 {
1175         if (this->ip == NULL)
1176                 return 0;
1177
1178         switch (this->GetProtocolFamily())
1179         {
1180 #ifdef SUPPORT_IP6LINKS
1181                 case AF_INET6:
1182                 {
1183                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1184                         return sin->sin6_port;
1185                 }
1186                 break;
1187 #endif
1188                 case AF_INET:
1189                 {
1190                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1191                         return sin->sin_port;
1192                 }
1193                 break;
1194                 default:
1195                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1196                 break;
1197         }
1198         return 0;
1199 }
1200
1201 int userrec::GetProtocolFamily()
1202 {
1203         if (this->ip == NULL)
1204                 return 0;
1205
1206         sockaddr_in* sin = (sockaddr_in*)this->ip;
1207         return sin->sin_family;
1208 }
1209
1210 const char* userrec::GetIPString()
1211 {
1212         static char buf[1024];
1213
1214         if (this->ip == NULL)
1215                 return "";
1216
1217         switch (this->GetProtocolFamily())
1218         {
1219 #ifdef SUPPORT_IP6LINKS
1220                 case AF_INET6:
1221                 {
1222                         static char temp[1024];
1223
1224                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1225                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1226                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1227                         if (*buf == ':')
1228                         {
1229                                 strlcpy(&temp[1], buf, sizeof(temp));
1230                                 *temp = '0';
1231                                 return temp;
1232                         }
1233                         return buf;
1234                 }
1235                 break;
1236 #endif
1237                 case AF_INET:
1238                 {
1239                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1240                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1241                         return buf;
1242                 }
1243                 break;
1244                 default:
1245                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1246                 break;
1247         }
1248         return "";
1249 }
1250
1251 const char* userrec::GetIPString(char* buf)
1252 {
1253         if (this->ip == NULL)
1254         {
1255                 *buf = 0;
1256                 return buf;
1257         }
1258
1259         switch (this->GetProtocolFamily())
1260         {
1261 #ifdef SUPPORT_IP6LINKS
1262                 case AF_INET6:
1263                 {
1264                         static char temp[1024];
1265
1266                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1267                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1268                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1269                         if (*buf == ':')
1270                         {
1271                                 strlcpy(&temp[1], buf, sizeof(temp));
1272                                 *temp = '0';
1273                                 strlcpy(buf, temp, sizeof(temp));
1274                         }
1275                         return buf;
1276                 }
1277                 break;
1278 #endif
1279                 case AF_INET:
1280                 {
1281                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1282                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1283                         return buf;
1284                 }
1285                 break;
1286
1287                 default:
1288                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1289                 break;
1290         }
1291         return "";
1292 }
1293
1294 /** NOTE: We cannot pass a const reference to this method.
1295  * The string is changed by the workings of the method,
1296  * so that if we pass const ref, we end up copying it to
1297  * something we can change anyway. Makes sense to just let
1298  * the compiler do that copy for us.
1299  */
1300 void userrec::Write(std::string text)
1301 {
1302         if ((this->fd < 0) || (this->fd > MAX_DESCRIPTORS))
1303                 return;
1304
1305         text.append("\r\n");
1306
1307         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1308         {
1309                 try
1310                 {
1311                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length());
1312                 }
1313                 catch (ModuleException& modexcept)
1314                 {
1315                         ServerInstance->Log(DEBUG,"Module exception caught: %s",modexcept.GetReason());
1316                 }
1317         }
1318         else
1319         {
1320                 this->AddWriteBuf(text);
1321         }
1322         ServerInstance->stats->statsSent += text.length();
1323 }
1324
1325 /** Write()
1326  */
1327 void userrec::Write(const char *text, ...)
1328 {
1329         va_list argsPtr;
1330         char textbuffer[MAXBUF];
1331
1332         va_start(argsPtr, text);
1333         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1334         va_end(argsPtr);
1335
1336         this->Write(std::string(textbuffer));
1337 }
1338
1339 void userrec::WriteServ(const std::string& text)
1340 {
1341         char textbuffer[MAXBUF];
1342
1343         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1344         this->Write(std::string(textbuffer));
1345 }
1346
1347 /** WriteServ()
1348  *  Same as Write(), except `text' is prefixed with `:server.name '.
1349  */
1350 void userrec::WriteServ(const char* text, ...)
1351 {
1352         va_list argsPtr;
1353         char textbuffer[MAXBUF];
1354
1355         va_start(argsPtr, text);
1356         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1357         va_end(argsPtr);
1358
1359         this->WriteServ(std::string(textbuffer));
1360 }
1361
1362
1363 void userrec::WriteFrom(userrec *user, const std::string &text)
1364 {
1365         char tb[MAXBUF];
1366
1367         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1368
1369         this->Write(std::string(tb));
1370 }
1371
1372
1373 /* write text from an originating user to originating user */
1374
1375 void userrec::WriteFrom(userrec *user, const char* text, ...)
1376 {
1377         va_list argsPtr;
1378         char textbuffer[MAXBUF];
1379
1380         va_start(argsPtr, text);
1381         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1382         va_end(argsPtr);
1383
1384         this->WriteFrom(user, std::string(textbuffer));
1385 }
1386
1387
1388 /* write text to an destination user from a source user (e.g. user privmsg) */
1389
1390 void userrec::WriteTo(userrec *dest, const char *data, ...)
1391 {
1392         char textbuffer[MAXBUF];
1393         va_list argsPtr;
1394
1395         va_start(argsPtr, data);
1396         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1397         va_end(argsPtr);
1398
1399         this->WriteTo(dest, std::string(textbuffer));
1400 }
1401
1402 void userrec::WriteTo(userrec *dest, const std::string &data)
1403 {
1404         dest->WriteFrom(this, data);
1405 }
1406
1407
1408 void userrec::WriteCommon(const char* text, ...)
1409 {
1410         char textbuffer[MAXBUF];
1411         va_list argsPtr;
1412
1413         if (this->registered != REG_ALL)
1414                 return;
1415
1416         va_start(argsPtr, text);
1417         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1418         va_end(argsPtr);
1419
1420         this->WriteCommon(std::string(textbuffer));
1421 }
1422
1423 void userrec::WriteCommon(const std::string &text)
1424 {
1425         bool sent_to_at_least_one = false;
1426
1427         if (this->registered != REG_ALL)
1428                 return;
1429
1430         uniq_id++;
1431
1432         for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1433         {
1434                 ucrec *n = *v;
1435                 if (n->channel)
1436                 {
1437                         CUList *ulist= n->channel->GetUsers();
1438
1439                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1440                         {
1441                                 if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1442                                 {
1443                                         already_sent[i->second->fd] = uniq_id;
1444                                         i->second->WriteFrom(this, std::string(text));
1445                                         sent_to_at_least_one = true;
1446                                 }
1447                         }
1448                 }
1449         }
1450
1451         /*
1452          * if the user was not in any channels, no users will receive the text. Make sure the user
1453          * receives their OWN message for WriteCommon
1454          */
1455         if (!sent_to_at_least_one)
1456         {
1457                 this->WriteFrom(this,std::string(text));
1458         }
1459 }
1460
1461
1462 /* write a formatted string to all users who share at least one common
1463  * channel, NOT including the source user e.g. for use in QUIT
1464  */
1465
1466 void userrec::WriteCommonExcept(const char* text, ...)
1467 {
1468         char textbuffer[MAXBUF];
1469         va_list argsPtr;
1470
1471         va_start(argsPtr, text);
1472         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1473         va_end(argsPtr);
1474
1475         this->WriteCommonExcept(std::string(textbuffer));
1476 }
1477
1478 void userrec::WriteCommonExcept(const std::string &text)
1479 {
1480         bool quit_munge = false;
1481         char oper_quit[MAXBUF];
1482         char textbuffer[MAXBUF];
1483
1484         strlcpy(textbuffer, text.c_str(), MAXBUF);
1485
1486         if (this->registered != REG_ALL)
1487                 return;
1488
1489         uniq_id++;
1490
1491         /* TODO: We need some form of WriteCommonExcept that will send two lines, one line to
1492          * opers and the other line to non-opers, then all this hidebans and hidesplits gunk
1493          * can go byebye.
1494          */
1495         if (ServerInstance->Config->HideSplits)
1496         {
1497                 char* check = textbuffer + 6;
1498
1499                 if (!strncasecmp(textbuffer, "QUIT :",6))
1500                 {
1501                         std::stringstream split(check);
1502                         std::string server_one;
1503                         std::string server_two;
1504
1505                         split >> server_one;
1506                         split >> server_two;
1507
1508                         if ((ServerInstance->FindServerName(server_one)) && (ServerInstance->FindServerName(server_two)))
1509                         {
1510                                 strlcpy(oper_quit,textbuffer,MAXQUIT);
1511                                 strlcpy(check,"*.net *.split",MAXQUIT);
1512                                 quit_munge = true;
1513                         }
1514                 }
1515         }
1516
1517         if ((ServerInstance->Config->HideBans) && (!quit_munge))
1518         {
1519                 if ((!strncasecmp(textbuffer, "QUIT :G-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :K-Lined:",14))
1520                 || (!strncasecmp(textbuffer, "QUIT :Q-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :Z-Lined:",14)))
1521                 {
1522                         char* check = textbuffer + 13;
1523                         strlcpy(oper_quit,textbuffer,MAXQUIT);
1524                         *check = 0;  // We don't need to strlcpy, we just chop it from the :
1525                         quit_munge = true;
1526                 }
1527         }
1528
1529         for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1530         {
1531                 ucrec* n = *v;
1532                 if (n->channel)
1533                 {
1534                         CUList *ulist= n->channel->GetUsers();
1535
1536                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1537                         {
1538                                 if (this != i->second)
1539                                 {
1540                                         if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1541                                         {
1542                                                 already_sent[i->second->fd] = uniq_id;
1543                                                 if (quit_munge)
1544                                                         i->second->WriteFrom(this, *i->second->oper ? std::string(oper_quit) : std::string(textbuffer));
1545                                                 else
1546                                                         i->second->WriteFrom(this, std::string(textbuffer));
1547                                         }
1548                                 }
1549                         }
1550                 }
1551         }
1552
1553 }
1554
1555 void userrec::WriteWallOps(const std::string &text)
1556 {
1557         /* Does nothing if theyre not opered */
1558         if ((!*this->oper) && (IS_LOCAL(this)))
1559                 return;
1560
1561         std::string wallop = "WALLOPS :";
1562         wallop.append(text);
1563
1564         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1565         {
1566                 userrec* t = *i;
1567                 if ((IS_LOCAL(t)) && (t->modes[UM_WALLOPS]))
1568                         this->WriteTo(t,wallop);
1569         }
1570 }
1571
1572 void userrec::WriteWallOps(const char* text, ...)
1573 {
1574         char textbuffer[MAXBUF];
1575         va_list argsPtr;
1576
1577         va_start(argsPtr, text);
1578         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1579         va_end(argsPtr);
1580
1581         this->WriteWallOps(std::string(textbuffer));
1582 }
1583
1584 /* return 0 or 1 depending if users u and u2 share one or more common channels
1585  * (used by QUIT, NICK etc which arent channel specific notices)
1586  *
1587  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1588  * the first users channels then the second users channels within the outer loop,
1589  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1590  * all possible iterations). However this new function instead checks against the
1591  * channel's userlist in the inner loop which is a std::map<userrec*,userrec*>
1592  * and saves us time as we already know what pointer value we are after.
1593  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1594  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1595  */
1596 bool userrec::SharesChannelWith(userrec *other)
1597 {
1598         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1599                 return false;
1600
1601         /* Outer loop */
1602         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1603         {
1604                 /* Fetch the channel from the user */
1605                 ucrec* user_channel = *i;
1606
1607                 if (user_channel->channel)
1608                 {
1609                         /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1610                          * by replacing it with a map::find which *should* be more efficient
1611                          */
1612                         if (user_channel->channel->HasUser(other))
1613                                 return true;
1614                 }
1615         }
1616         return false;
1617 }
1618
1619 int userrec::CountChannels()
1620 {
1621         int z = 0;
1622         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1623                 if ((*i)->channel)
1624                         z++;
1625         return z;
1626 }
1627
1628 bool userrec::ChangeName(const char* gecos)
1629 {
1630         if (IS_LOCAL(this))
1631         {
1632                 int MOD_RESULT = 0;
1633                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1634                 if (MOD_RESULT)
1635                         return false;
1636                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1637         }
1638         strlcpy(this->fullname,gecos,MAXGECOS+1);
1639         return true;
1640 }
1641
1642 bool userrec::ChangeDisplayedHost(const char* host)
1643 {
1644         if (IS_LOCAL(this))
1645         {
1646                 int MOD_RESULT = 0;
1647                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host));
1648                 if (MOD_RESULT)
1649                         return false;
1650                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host));
1651         }
1652         if (this->ServerInstance->Config->CycleHosts)
1653                 this->WriteCommonExcept("%s","QUIT :Changing hosts");
1654
1655         strlcpy(this->dhost,host,63);
1656
1657         if (this->ServerInstance->Config->CycleHosts)
1658         {
1659                 for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1660                 {
1661                         if ((*i)->channel)
1662                         {
1663                                 (*i)->channel->WriteAllExceptSender(this, 0, "JOIN %s", (*i)->channel->name);
1664                                 std::string n = this->ServerInstance->Modes->ModeString(this, (*i)->channel);
1665                                 if (n.length())
1666                                         (*i)->channel->WriteChannelWithServ(this->ServerInstance->Config->ServerName, "MODE %s +%s", (*i)->channel->name, n.c_str());
1667                         }
1668                 }
1669         }
1670
1671         if (IS_LOCAL(this))
1672                 this->WriteServ("396 %s %s :is now your hidden host",this->nick,this->dhost);
1673
1674         return true;
1675 }
1676
1677 bool userrec::ChangeIdent(const char* newident)
1678 {
1679         if (this->ServerInstance->Config->CycleHosts)
1680                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1681
1682         strlcpy(this->ident, newident, IDENTMAX+2);
1683
1684         if (this->ServerInstance->Config->CycleHosts)
1685         {
1686                 for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1687                 {
1688                         if ((*i)->channel)
1689                         {
1690                                 (*i)->channel->WriteAllExceptSender(this, 0, "JOIN %s", (*i)->channel->name);
1691                                 std::string n = this->ServerInstance->Modes->ModeString(this, (*i)->channel);
1692                                 if (n.length())
1693                                         (*i)->channel->WriteChannelWithServ(this->ServerInstance->Config->ServerName, "MODE %s +%s", (*i)->channel->name, n.c_str());
1694                         }
1695                 }
1696         }
1697
1698         return true;
1699 }
1700
1701 void userrec::NoticeAll(char* text, ...)
1702 {
1703         char textbuffer[MAXBUF];
1704         char formatbuffer[MAXBUF];
1705         va_list argsPtr;
1706
1707         va_start(argsPtr, text);
1708         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1709         va_end(argsPtr);
1710
1711         snprintf(formatbuffer,MAXBUF,"NOTICE $* :%s",textbuffer);
1712
1713         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1714         {
1715                 userrec* t = *i;
1716                 t->WriteFrom(this, std::string(formatbuffer));
1717         }
1718 }
1719
1720
1721 std::string userrec::ChannelList(userrec* source)
1722 {
1723         std::string list;
1724         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1725         {
1726                 ucrec* rec = *i;
1727
1728                 if(rec->channel && rec->channel->name)
1729                 {
1730                         /* If the target is the same as the sender, let them see all their channels.
1731                          * If the channel is NOT private/secret OR the user shares a common channel
1732                          * If the user is an oper, and the <options:operspywhois> option is set.
1733                          */
1734                         if ((source == this) || (*source->oper && ServerInstance->Config->OperSpyWhois) || (((!rec->channel->modes[CM_PRIVATE]) && (!rec->channel->modes[CM_SECRET])) || (rec->channel->HasUser(source))))
1735                         {
1736                                 list.append(rec->channel->GetPrefixChar(this)).append(rec->channel->name).append(" ");
1737                         }
1738                 }
1739         }
1740         return list;
1741 }
1742
1743 void userrec::SplitChanList(userrec* dest, const std::string &cl)
1744 {
1745         std::string line;
1746         std::ostringstream prefix;
1747         std::string::size_type start, pos, length;
1748
1749         prefix << ":" << ServerInstance->Config->ServerName << " 319 " << this->nick << " " << dest->nick << " :";
1750         line = prefix.str();
1751
1752         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1753         {
1754                 length = (pos == std::string::npos) ? cl.length() : pos;
1755
1756                 if (line.length() + length - start > 510)
1757                 {
1758                         this->Write(line);
1759                         line = prefix.str();
1760                 }
1761
1762                 if(pos == std::string::npos)
1763                 {
1764                         line.append(cl.substr(start, length - start));
1765                         break;
1766                 }
1767                 else
1768                 {
1769                         line.append(cl.substr(start, length - start + 1));
1770                 }
1771         }
1772
1773         if (line.length())
1774         {
1775                 this->Write(line);
1776         }
1777 }
1778
1779
1780 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1781  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1782  * then their ip will be taken as 'priority' anyway, so for example,
1783  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1784  */
1785 ConnectClass& userrec::GetClass()
1786 {
1787         for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1788         {
1789                 if ((match(this->GetIPString(),i->host.c_str(),true)) || (match(this->host,i->host.c_str())))
1790                         return *i;
1791         }
1792
1793         return *(ServerInstance->Config->Classes.begin());
1794 }
1795
1796 void userrec::PurgeEmptyChannels()
1797 {
1798         std::vector<chanrec*> to_delete;
1799
1800         // firstly decrement the count on each channel
1801         for (std::vector<ucrec*>::iterator f = this->chans.begin(); f != this->chans.end(); f++)
1802         {
1803                 ucrec* uc = *f;
1804                 if (uc->channel)
1805                 {
1806                         uc->channel->RemoveAllPrefixes(this);
1807                         if (uc->channel->DelUser(this) == 0)
1808                         {
1809                                 /* No users left in here, mark it for deletion */
1810                                 to_delete.push_back(uc->channel);
1811                                 uc->channel = NULL;
1812                         }
1813                 }
1814         }
1815
1816         for (std::vector<chanrec*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1817         {
1818                 chanrec* thischan = *n;
1819                 chan_hash::iterator i2 = ServerInstance->chanlist.find(thischan->name);
1820                 if (i2 != ServerInstance->chanlist.end())
1821                 {
1822                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1823                         DELETE(i2->second);
1824                         ServerInstance->chanlist.erase(i2);
1825                 }
1826         }
1827
1828         this->UnOper();
1829 }
1830
1831 void userrec::ShowMOTD()
1832 {
1833         if (!ServerInstance->Config->MOTD.size())
1834         {
1835                 this->WriteServ("422 %s :Message of the day file is missing.",this->nick);
1836                 return;
1837         }
1838         this->WriteServ("375 %s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1839
1840         for (unsigned int i = 0; i < ServerInstance->Config->MOTD.size(); i++)
1841                 this->WriteServ("372 %s :- %s",this->nick,ServerInstance->Config->MOTD[i].c_str());
1842
1843         this->WriteServ("376 %s :End of message of the day.", this->nick);
1844 }
1845
1846 void userrec::ShowRULES()
1847 {
1848         if (!ServerInstance->Config->RULES.size())
1849         {
1850                 this->WriteServ("NOTICE %s :Rules file is missing.",this->nick);
1851                 return;
1852         }
1853         this->WriteServ("NOTICE %s :%s rules",this->nick,ServerInstance->Config->ServerName);
1854
1855         for (unsigned int i = 0; i < ServerInstance->Config->RULES.size(); i++)
1856                 this->WriteServ("NOTICE %s :%s",this->nick,ServerInstance->Config->RULES[i].c_str());
1857
1858         this->WriteServ("NOTICE %s :End of %s rules.",this->nick,ServerInstance->Config->ServerName);
1859 }
1860
1861 void userrec::HandleEvent(EventType et)
1862 {
1863         /* WARNING: May delete this user! */
1864         ServerInstance->ProcessUser(this);
1865 }
1866