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