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                 ucrec* x = new ucrec();
 285                 chans[n] = x;
 286                 x->channel = NULL;
 287                 x->uc_modes = 0;
 288         }
 289 }
 290
 291 userrec::~userrec()
 292 {
 293         for (std::vector<ucrec*>::iterator n = chans.begin(); n != chans.end(); n++)
 294         {
 295                 ucrec* x = (ucrec*)*n;
 296                 delete x;
 297         }
 298
 299         if (ip)
 300         {
 301                 if (this->GetProtocolFamily() == AF_INET)
 302                 {
 303                         delete (sockaddr_in*)ip;
 304                 }
 305 #ifdef SUPPORT_IP6LINKS
 306                 else
 307                 {
 308                         delete (sockaddr_in6*)ip;
 309                 }
 310 #endif
 311         }
 312 }
 313
 314 /* XXX - minor point, other *Host functions return a char *, this one creates it. Might be nice to be consistant? */
 315 void userrec::MakeHost(char* nhost)
 316 {
 317         /* This is much faster than snprintf */
 318         char* t = nhost;
 319         for(char* n = ident; *n; n++)
 320                 *t++ = *n;
 321         *t++ = '@';
 322         for(char* n = host; *n; n++)
 323                 *t++ = *n;
 324         *t = 0;
 325 }
 326
 327 void userrec::CloseSocket()
 328 {
 329         shutdown(this->fd,2);
 330         close(this->fd);
 331 }
 332
 333 char* userrec::GetFullHost()
 334 {
 335         static char result[MAXBUF];
 336         char* t = result;
 337         for(char* n = nick; *n; n++)
 338                 *t++ = *n;
 339         *t++ = '!';
 340         for(char* n = ident; *n; n++)
 341                 *t++ = *n;
 342         *t++ = '@';
 343         for(char* n = dhost; *n; n++)
 344                 *t++ = *n;
 345         *t = 0;
 346         return result;
 347 }
 348
 349 char* userrec::MakeWildHost()
 350 {
 351         static char nresult[MAXBUF];
 352         char* t = nresult;
 353         *t++ = '*';     *t++ = '!';
 354         *t++ = '*';     *t++ = '@';
 355         for(char* n = dhost; *n; n++)
 356                 *t++ = *n;
 357         *t = 0;
 358         return nresult;
 359 }
 360
 361 int userrec::ReadData(void* buffer, size_t size)
 362 {
 363         if (IS_LOCAL(this))
 364         {
 365                 return read(this->fd, buffer, size);
 366         }
 367         else
 368                 return 0;
 369 }
 370
 371
 372 char* userrec::GetFullRealHost()
 373 {
 374         static char fresult[MAXBUF];
 375         char* t = fresult;
 376         for(char* n = nick; *n; n++)
 377                 *t++ = *n;
 378         *t++ = '!';
 379         for(char* n = ident; *n; n++)
 380                 *t++ = *n;
 381         *t++ = '@';
 382         for(char* n = host; *n; n++)
 383                 *t++ = *n;
 384         *t = 0;
 385         return fresult;
 386 }
 387
 388 bool userrec::IsInvited(irc::string &channel)
 389 {
 390         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 391         {
 392                 irc::string compare = i->channel;
 393
 394                 if (compare == channel)
 395                 {
 396                         return true;
 397                 }
 398         }
 399         return false;
 400 }
 401
 402 InvitedList* userrec::GetInviteList()
 403 {
 404         return &invites;
 405 }
 406
 407 void userrec::InviteTo(irc::string &channel)
 408 {
 409         Invited i;
 410         i.channel = channel;
 411         invites.push_back(i);
 412 }
 413
 414 void userrec::RemoveInvite(irc::string &channel)
 415 {
 416         ServerInstance->Log(DEBUG,"Removing invites");
 417
 418         if (invites.size())
 419         {
 420                 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 421                 {
 422                         irc::string compare = i->channel;
 423
 424                         if (compare == channel)
 425                         {
 426                                 invites.erase(i);
 427                                 return;
 428                         }
 429                 }
 430         }
 431 }
 432
 433 bool userrec::HasPermission(const std::string &command)
 434 {
 435         char* mycmd;
 436         char* savept;
 437         char* savept2;
 438
 439         /*
 440          * users on remote servers can completely bypass all permissions based checks.
 441          * This prevents desyncs when one server has different type/class tags to another.
 442          * That having been said, this does open things up to the possibility of source changes
 443          * allowing remote kills, etc - but if they have access to the src, they most likely have
 444          * access to the conf - so it's an end to a means either way.
 445          */
 446         if (!IS_LOCAL(this))
 447                 return true;
 448
 449         // are they even an oper at all?
 450         if (*this->oper)
 451         {
 452                 opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper);
 453                 if (iter_opertype != ServerInstance->Config->opertypes.end())
 454                 {
 455                         char* Classes = strdup(iter_opertype->second);
 456                         char* myclass = strtok_r(Classes," ",&savept);
 457                         while (myclass)
 458                         {
 459                                 operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass);
 460                                 if (iter_operclass != ServerInstance->Config->operclass.end())
 461                                 {
 462                                         char* CommandList = strdup(iter_operclass->second);
 463                                         mycmd = strtok_r(CommandList," ",&savept2);
 464                                         while (mycmd)
 465                                         {
 466                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 467                                                 {
 468                                                         free(Classes);
 469                                                         free(CommandList);
 470                                                         return true;
 471                                                 }
 472                                                 mycmd = strtok_r(NULL," ",&savept2);
 473                                         }
 474                                         free(CommandList);
 475                                 }
 476                                 myclass = strtok_r(NULL," ",&savept);
 477                         }
 478                         free(Classes);
 479                 }
 480         }
 481         return false;
 482 }
 483
 484 /** NOTE: We cannot pass a const reference to this method.
 485  * The string is changed by the workings of the method,
 486  * so that if we pass const ref, we end up copying it to
 487  * something we can change anyway. Makes sense to just let
 488  * the compiler do that copy for us.
 489  */
 490 bool userrec::AddBuffer(std::string a)
 491 {
 492         try
 493         {
 494                 std::string::size_type i = a.rfind('\r');
 495
 496                 while (i != std::string::npos)
 497                 {
 498                         a.erase(i, 1);
 499                         i = a.rfind('\r');
 500                 }
 501
 502                 if (a.length())
 503                         recvq.append(a);
 504
 505                 if (recvq.length() > (unsigned)this->recvqmax)
 506                 {
 507                         this->SetWriteError("RecvQ exceeded");
 508                         ServerInstance->WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 509                         return false;
 510                 }
 511
 512                 return true;
 513         }
 514
 515         catch (...)
 516         {
 517                 ServerInstance->Log(DEBUG,"Exception in userrec::AddBuffer()");
 518                 return false;
 519         }
 520 }
 521
 522 bool userrec::BufferIsReady()
 523 {
 524         return (recvq.find('\n') != std::string::npos);
 525 }
 526
 527 void userrec::ClearBuffer()
 528 {
 529         recvq = "";
 530 }
 531
 532 std::string userrec::GetBuffer()
 533 {
 534         try
 535         {
 536                 if (!recvq.length())
 537                         return "";
 538
 539                 /* Strip any leading \r or \n off the string.
 540                  * Usually there are only one or two of these,
 541                  * so its is computationally cheap to do.
 542                  */
 543                 while ((*recvq.begin() == '\r') || (*recvq.begin() == '\n'))
 544                         recvq.erase(recvq.begin());
 545
 546                 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 547                 {
 548                         /* Find the first complete line, return it as the
 549                          * result, and leave the recvq as whats left
 550                          */
 551                         if (*x == '\n')
 552                         {
 553                                 std::string ret = std::string(recvq.begin(), x);
 554                                 recvq.erase(recvq.begin(), x + 1);
 555                                 return ret;
 556                         }
 557                 }
 558                 return "";
 559         }
 560
 561         catch (...)
 562         {
 563                 ServerInstance->Log(DEBUG,"Exception in userrec::GetBuffer()");
 564                 return "";
 565         }
 566 }
 567
 568 void userrec::AddWriteBuf(const std::string &data)
 569 {
 570         if (*this->GetWriteError())
 571                 return;
 572
 573         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 574         {
 575                 /*
 576                  * Fix by brain - Set the error text BEFORE calling writeopers, because
 577                  * if we dont it'll recursively  call here over and over again trying
 578                  * to repeatedly add the text to the sendq!
 579                  */
 580                 this->SetWriteError("SendQ exceeded");
 581                 ServerInstance->WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 582                 return;
 583         }
 584
 585         try
 586         {
 587                 if (data.length() > 512)
 588                 {
 589                         std::string newdata(data);
 590                         newdata.resize(510);
 591                         newdata.append("\r\n");
 592                         sendq.append(newdata);
 593                 }
 594                 else
 595                 {
 596                         sendq.append(data);
 597                 }
 598         }
 599         catch (...)
 600         {
 601                 this->SetWriteError("SendQ exceeded");
 602                 ServerInstance->WriteOpers("*** User %s SendQ got an exception",this->nick);
 603         }
 604 }
 605
 606 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 607 void userrec::FlushWriteBuf()
 608 {
 609         try
 610         {
 611                 if (this->fd == FD_MAGIC_NUMBER)
 612                 {
 613                         sendq = "";
 614                 }
 615                 if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 616                 {
 617                         const char* tb = this->sendq.c_str();
 618                         int n_sent = write(this->fd,tb,this->sendq.length());
 619                         if (n_sent == -1)
 620                         {
 621                                 if (errno != EAGAIN)
 622                                         this->SetWriteError(strerror(errno));
 623                         }
 624                         else
 625                         {
 626                                 // advance the queue
 627                                 tb += n_sent;
 628                                 this->sendq = tb;
 629                                 // update the user's stats counters
 630                                 this->bytes_out += n_sent;
 631                                 this->cmds_out++;
 632                         }
 633                 }
 634         }
 635
 636         catch (...)
 637         {
 638                 ServerInstance->Log(DEBUG,"Exception in userrec::FlushWriteBuf()");
 639         }
 640 }
 641
 642 void userrec::SetWriteError(const std::string &error)
 643 {
 644         try
 645         {
 646                 ServerInstance->Log(DEBUG,"SetWriteError: %s",error.c_str());
 647                 // don't try to set the error twice, its already set take the first string.
 648                 if (!this->WriteError.length())
 649                 {
 650                         ServerInstance->Log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 651                         this->WriteError = error;
 652                 }
 653         }
 654
 655         catch (...)
 656         {
 657                 ServerInstance->Log(DEBUG,"Exception in userrec::SetWriteError()");
 658         }
 659 }
 660
 661 const char* userrec::GetWriteError()
 662 {
 663         return this->WriteError.c_str();
 664 }
 665
 666 void userrec::Oper(const std::string &opertype)
 667 {
 668         try
 669         {
 670                 this->modes[UM_OPERATOR] = 1;
 671                 this->WriteServ("MODE %s :+o", this->nick);
 672                 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 673                 ServerInstance->Log(DEFAULT,"OPER: %s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 674                 strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 675                 ServerInstance->all_opers.push_back(this);
 676                 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype));
 677         }
 678
 679         catch (...)
 680         {
 681                 ServerInstance->Log(DEBUG,"Exception in userrec::Oper()");
 682         }
 683 }
 684
 685 void userrec::UnOper()
 686 {
 687         try
 688         {
 689                 if (*this->oper)
 690                 {
 691                         *this->oper = 0;
 692                         this->modes[UM_OPERATOR] = 0;
 693                         for (std::vector<userrec*>::iterator a = ServerInstance->all_opers.begin(); a < ServerInstance->all_opers.end(); a++)
 694                         {
 695                                 if (*a == this)
 696                                 {
 697                                         ServerInstance->Log(DEBUG,"Oper removed from optimization list");
 698                                         ServerInstance->all_opers.erase(a);
 699                                         return;
 700                                 }
 701                         }
 702                 }
 703         }
 704
 705         catch (...)
 706         {
 707                 ServerInstance->Log(DEBUG,"Exception in userrec::UnOper()");
 708         }
 709 }
 710
 711 void userrec::QuitUser(InspIRCd* Instance, userrec *user, const std::string &quitreason)
 712 {
 713         user_hash::iterator iter = Instance->clientlist.find(user->nick);
 714         std::string reason = quitreason;
 715
 716         if (reason.length() > MAXQUIT - 1)
 717                 reason.resize(MAXQUIT - 1);
 718
 719         if (IS_LOCAL(user))
 720                 user->Write("ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason.c_str());
 721
 722         if (user->registered == REG_ALL)
 723         {
 724                 user->PurgeEmptyChannels();
 725                 FOREACH_MOD_I(Instance,I_OnUserQuit,OnUserQuit(user,reason));
 726                 user->WriteCommonExcept("QUIT :%s",reason.c_str());
 727         }
 728
 729         if (IS_LOCAL(user))
 730                 user->FlushWriteBuf();
 731
 732         FOREACH_MOD_I(Instance,I_OnUserDisconnect,OnUserDisconnect(user));
 733
 734         if (IS_LOCAL(user))
 735         {
 736                 if (Instance->Config->GetIOHook(user->GetPort()))
 737                 {
 738                         try
 739                         {
 740                                 Instance->Config->GetIOHook(user->GetPort())->OnRawSocketClose(user->fd);
 741                         }
 742                         catch (ModuleException& modexcept)
 743                         {
 744                                 Instance->Log(DEBUG,"Module exception cought: %s",modexcept.GetReason());
 745                         }
 746                 }
 747
 748                 Instance->SE->DelFd(user);
 749                 user->CloseSocket();
 750         }
 751
 752         /*
 753          * this must come before the ServerInstance->SNO->WriteToSnoMaskso that it doesnt try to fill their buffer with anything
 754          * if they were an oper with +sn +qQ.
 755          */
 756         if (user->registered == REG_ALL)
 757         {
 758                 if (IS_LOCAL(user))
 759                         Instance->SNO->WriteToSnoMask('q',"Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason.c_str());
 760                 else
 761                         Instance->SNO->WriteToSnoMask('Q',"Client exiting on server %s: %s!%s@%s [%s]",user->server,user->nick,user->ident,user->host,reason.c_str());
 762                 user->AddToWhoWas();
 763         }
 764
 765         if (iter != Instance->clientlist.end())
 766         {
 767                 Instance->Log(DEBUG,"deleting user hash value %lx",(unsigned long)user);
 768                 if (IS_LOCAL(user))
 769                 {
 770                         if (find(Instance->local_users.begin(),Instance->local_users.end(),user) != Instance->local_users.end())
 771                                 Instance->local_users.erase(find(Instance->local_users.begin(),Instance->local_users.end(),user));
 772                 }
 773                 Instance->clientlist.erase(iter);
 774                 DELETE(user);
 775         }
 776 }
 777
 778 namespace irc
 779 {
 780         namespace whowas
 781         {
 782
 783                 WhoWasGroup::WhoWasGroup(userrec* user) : host(NULL), dhost(NULL), ident(NULL), server(NULL), gecos(NULL), signon(user->signon)
 784                 {
 785                         this->host = strdup(user->host);
 786                         this->dhost = strdup(user->dhost);
 787                         this->ident = strdup(user->ident);
 788                         this->server = user->server;
 789                         this->gecos = strdup(user->fullname);
 790                 }
 791
 792                 WhoWasGroup::~WhoWasGroup()
 793                 {
 794                         if (host)
 795                                 free(host);
 796                         if (dhost)
 797                                 free(dhost);
 798                         if (ident)
 799                                 free(ident);
 800                         if (gecos)
 801                                 free(gecos);
 802                 }
 803
 804                 /* every hour, run this function which removes all entries over 3 days */
 805                 void MaintainWhoWas(InspIRCd* ServerInstance, time_t t)
 806                 {
 807                         for (whowas_users::iterator iter = ServerInstance->whowas.begin(); iter != ServerInstance->whowas.end(); iter++)
 808                         {
 809                                 whowas_set* n = (whowas_set*)iter->second;
 810                                 if (n->size())
 811                                 {
 812                                         while ((n->begin() != n->end()) && ((*n->begin())->signon < t - 259200)) // 3 days
 813                                         {
 814                                                 WhoWasGroup *a = *(n->begin());
 815                                                 DELETE(a);
 816                                                 n->erase(n->begin());
 817                                         }
 818                                 }
 819                         }
 820                 }
 821         };
 822 };
 823
 824 /* adds or updates an entry in the whowas list */
 825 void userrec::AddToWhoWas()
 826 {
 827         irc::whowas::whowas_users::iterator iter = ServerInstance->whowas.find(this->nick);
 828
 829         ServerInstance->Log(DEBUG,"Add to whowas lists");
 830
 831         if (iter == ServerInstance->whowas.end())
 832         {
 833                 ServerInstance->Log(DEBUG,"Adding new whowas set for %s",this->nick);
 834                 irc::whowas::whowas_set* n = new irc::whowas::whowas_set;
 835                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 836                 n->push_back(a);
 837                 ServerInstance->whowas[this->nick] = n;
 838         }
 839         else
 840         {
 841                 irc::whowas::whowas_set* group = (irc::whowas::whowas_set*)iter->second;
 842
 843                 ServerInstance->Log(DEBUG,"Using existing whowas group for %s",this->nick);
 844
 845                 if (group->size() > 10)
 846                 {
 847                         ServerInstance->Log(DEBUG,"Trimming existing group to ten entries for %s",this->nick);
 848                         irc::whowas::WhoWasGroup *a = (irc::whowas::WhoWasGroup*)*(group->begin());
 849                         DELETE(a);
 850                         group->pop_front();
 851                 }
 852
 853                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 854                 group->push_back(a);
 855         }
 856 }
 857
 858 /* add a client connection to the sockets list */
 859 void userrec::AddClient(InspIRCd* Instance, int socket, int port, bool iscached, insp_inaddr ip)
 860 {
 861         std::string tempnick = ConvToStr(socket) + "-unknown";
 862         user_hash::iterator iter = Instance->clientlist.find(tempnick);
 863         const char *ipaddr = insp_ntoa(ip);
 864         userrec* New;
 865         int j = 0;
 866
 867         /*
 868          * fix by brain.
 869          * as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 870          * using one as a registered connection. As they are per fd, we can also safely assume
 871          * that we wont have collisions. Therefore, if the nick exists in the list, its only
 872          * used by a dead socket, erase the iterator so that the new client may reclaim it.
 873          * this was probably the cause of 'server ignores me when i hammer it with reconnects'
 874          * issue in earlier alphas/betas
 875          */
 876         if (iter != Instance->clientlist.end())
 877         {
 878                 userrec* goner = iter->second;
 879                 DELETE(goner);
 880                 Instance->clientlist.erase(iter);
 881         }
 882
 883         Instance->Log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr);
 884
 885         New = new userrec(Instance);
 886         Instance->clientlist[tempnick] = New;
 887         New->fd = socket;
 888         strlcpy(New->nick,tempnick.c_str(),NICKMAX-1);
 889
 890         New->server = Instance->FindServerNamePtr(Instance->Config->ServerName);
 891         /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
 892         strcpy(New->ident, "unknown");
 893
 894         New->registered = REG_NONE;
 895         New->signon = Instance->Time() + Instance->Config->dns_timeout;
 896         New->lastping = 1;
 897
 898         Instance->Log(DEBUG,"Setting socket addresses");
 899         New->SetSockAddr(AF_FAMILY, ipaddr, port);
 900         Instance->Log(DEBUG,"Socket addresses set.");
 901
 902         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
 903         for (const char* temp = New->GetIPString(); *temp && j < 64; temp++, j++)
 904                 New->dhost[j] = New->host[j] = *temp;
 905         New->dhost[j] = New->host[j] = 0;
 906
 907         Instance->Log(DEBUG,"Hosts set.");
 908
 909         // set the registration timeout for this user
 910         unsigned long class_regtimeout = 90;
 911         int class_flood = 0;
 912         long class_threshold = 5;
 913         long class_sqmax = 262144;      // 256kb
 914         long class_rqmax = 4096;        // 4k
 915
 916         Instance->Log(DEBUG,"Class stuff set.");
 917
 918         for (ClassVector::iterator i = Instance->Config->Classes.begin(); i != Instance->Config->Classes.end(); i++)
 919         {
 920                 if ((i->type == CC_ALLOW) && (match(ipaddr,i->host.c_str(),true)))
 921                 {
 922                         class_regtimeout = (unsigned long)i->registration_timeout;
 923                         class_flood = i->flood;
 924                         New->pingmax = i->pingtime;
 925                         class_threshold = i->threshold;
 926                         class_sqmax = i->sendqmax;
 927                         class_rqmax = i->recvqmax;
 928                         break;
 929                 }
 930         }
 931
 932         Instance->Log(DEBUG,"nping etc set.");
 933
 934         New->nping = Instance->Time() + New->pingmax + Instance->Config->dns_timeout;
 935         New->timeout = Instance->Time() + class_regtimeout;
 936         New->flood = class_flood;
 937         New->threshold = class_threshold;
 938         New->sendqmax = class_sqmax;
 939         New->recvqmax = class_rqmax;
 940
 941         Instance->Log(DEBUG,"Push back to local users.");
 942         Instance->local_users.push_back(New);
 943
 944         Instance->Log(DEBUG,"Check softlimit: %d %d %d",Instance->local_users.size(), Instance->Config->SoftLimit, MAXCLIENTS);
 945         if ((Instance->local_users.size() > Instance->Config->SoftLimit) || (Instance->local_users.size() >= MAXCLIENTS))
 946         {
 947                 Instance->Log(DEBUG,"Check softlimit failed");
 948                 Instance->WriteOpers("*** Warning: softlimit value has been reached: %d clients", Instance->Config->SoftLimit);
 949                 userrec::QuitUser(Instance, New,"No more connections allowed");
 950                 return;
 951         }
 952
 953         Instance->Log(DEBUG,"Softlimit passed.");
 954
 955         /*
 956          * XXX -
 957          * this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 958          * its a pretty big but for the moment valid assumption:
 959          * file descriptors are handed out starting at 0, and are recycled as theyre freed.
 960          * therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 961          * irc server at once (or the irc server otherwise initiating this many connections, files etc)
 962          * which for the time being is a physical impossibility (even the largest networks dont have more
 963          * than about 10,000 users on ONE server!)
 964          */
 965         if ((unsigned int)socket >= MAX_DESCRIPTORS)
 966         {
 967                 userrec::QuitUser(Instance, New, "Server is full");
 968                 return;
 969         }
 970
 971         Instance->Log(DEBUG,"socket < MAX_DESCRIPTORS passed.");
 972
 973         ELine* e = Instance->XLines->matches_exception(New);
 974         if (!e)
 975         {
 976                 Instance->Log(DEBUG,"Doesnt match eline.");
 977                 ZLine* r = Instance->XLines->matches_zline(ipaddr);
 978                 if (r)
 979                 {
 980                         Instance->Log(DEBUG,"Matches zline.");
 981                         char reason[MAXBUF];
 982                         snprintf(reason,MAXBUF,"Z-Lined: %s",r->reason);
 983                         userrec::QuitUser(Instance, New, reason);
 984                         return;
 985                 }
 986                 Instance->Log(DEBUG,"Doesnt match zline.");
 987         }
 988
 989         Instance->Log(DEBUG,"Check before AddFd.");
 990
 991         if (socket > -1)
 992         {
 993                 Instance->Log(DEBUG,"Adding fd.");
 994                 if (!Instance->SE->AddFd(New))
 995                 {
 996                         Instance->Log(DEBUG,"Oops, fd already exists");
 997                         userrec::QuitUser(Instance, New, "Internal error handling connection");
 998                         return;
 999                 }
1000         }
1001
1002         New->WriteServ("NOTICE Auth :*** Looking up your hostname...");
1003 }
1004
1005 long userrec::GlobalCloneCount()
1006 {
1007         char u1[128];
1008         char u2[128];
1009         long x = 0;
1010
1011         for (user_hash::const_iterator a = ServerInstance->clientlist.begin(); a != ServerInstance->clientlist.end(); a++)
1012         {
1013                 /* We have to match ip's as strings - we don't know what protocol
1014                  * a remote user may be using
1015                  */
1016                 if (strcmp(a->second->GetIPString(u1), this->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         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
1138         this->registered = REG_ALL;
1139         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString());
1140 }
1141
1142 /** userrec::UpdateNick()
1143  * re-allocates a nick in the user_hash after they change nicknames,
1144  * returns a pointer to the new user as it may have moved
1145  */
1146 userrec* userrec::UpdateNickHash(const char* New)
1147 {
1148         try
1149         {
1150                 //user_hash::iterator newnick;
1151                 user_hash::iterator oldnick = ServerInstance->clientlist.find(this->nick);
1152
1153                 if (!strcasecmp(this->nick,New))
1154                         return oldnick->second;
1155
1156                 if (oldnick == ServerInstance->clientlist.end())
1157                         return NULL; /* doesnt exist */
1158
1159                 userrec* olduser = oldnick->second;
1160                 ServerInstance->clientlist[New] = olduser;
1161                 ServerInstance->clientlist.erase(oldnick);
1162                 return ServerInstance->clientlist[New];
1163         }
1164
1165         catch (...)
1166         {
1167                 ServerInstance->Log(DEBUG,"Exception in userrec::UpdateNickHash()");
1168                 return NULL;
1169         }
1170 }
1171
1172 bool userrec::ForceNickChange(const char* newnick)
1173 {
1174         try
1175         {
1176                 int MOD_RESULT = 0;
1177
1178                 FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1179
1180                 if (MOD_RESULT)
1181                 {
1182                         ServerInstance->stats->statsCollisions++;
1183                         return false;
1184                 }
1185
1186                 if (ServerInstance->XLines->matches_qline(newnick))
1187                 {
1188                         ServerInstance->stats->statsCollisions++;
1189                         return false;
1190                 }
1191
1192                 if (this->registered == REG_ALL)
1193                 {
1194                         const char* pars[1];
1195                         pars[0] = newnick;
1196                         std::string cmd = "NICK";
1197                         return (ServerInstance->Parser->CallHandler(cmd, pars, 1, this) == CMD_SUCCESS);
1198                 }
1199                 return false;
1200         }
1201
1202         catch (...)
1203         {
1204                 ServerInstance->Log(DEBUG,"Exception in userrec::ForceNickChange()");
1205                 return false;
1206         }
1207 }
1208
1209 void userrec::SetSockAddr(int protocol_family, const char* ip, int port)
1210 {
1211         switch (protocol_family)
1212         {
1213 #ifdef SUPPORT_IP6LINKS
1214                 case AF_INET6:
1215                 {
1216                         ServerInstance->Log(DEBUG,"Set inet6 protocol address");
1217                         sockaddr_in6* sin = new sockaddr_in6;
1218                         sin->sin6_family = AF_INET6;
1219                         sin->sin6_port = port;
1220                         inet_pton(AF_INET6, ip, &sin->sin6_addr);
1221                         this->ip = (sockaddr*)sin;
1222                 }
1223                 break;
1224 #endif
1225                 case AF_INET:
1226                 {
1227                         ServerInstance->Log(DEBUG,"Set inet4 protocol address");
1228                         sockaddr_in* sin = new sockaddr_in;
1229                         sin->sin_family = AF_INET;
1230                         sin->sin_port = port;
1231                         inet_pton(AF_INET, ip, &sin->sin_addr);
1232                         this->ip = (sockaddr*)sin;
1233                 }
1234                 break;
1235                 default:
1236                         ServerInstance->Log(DEBUG,"Ut oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1237                 break;
1238         }
1239 }
1240
1241 int userrec::GetPort()
1242 {
1243         if (this->ip == NULL)
1244                 return 0;
1245
1246         switch (this->GetProtocolFamily())
1247         {
1248 #ifdef SUPPORT_IP6LINKS
1249                 case AF_INET6:
1250                 {
1251                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1252                         return sin->sin6_port;
1253                 }
1254                 break;
1255 #endif
1256                 case AF_INET:
1257                 {
1258                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1259                         return sin->sin_port;
1260                 }
1261                 break;
1262                 default:
1263                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1264                 break;
1265         }
1266         return 0;
1267 }
1268
1269 int userrec::GetProtocolFamily()
1270 {
1271         if (this->ip == NULL)
1272                 return 0;
1273
1274         sockaddr_in* sin = (sockaddr_in*)this->ip;
1275         return sin->sin_family;
1276 }
1277
1278 const char* userrec::GetIPString()
1279 {
1280         static char buf[1024];
1281
1282         if (this->ip == NULL)
1283                 return "";
1284
1285         switch (this->GetProtocolFamily())
1286         {
1287 #ifdef SUPPORT_IP6LINKS
1288                 case AF_INET6:
1289                 {
1290                         static char temp[1024];
1291
1292                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1293                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1294                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1295                         if (*buf == ':')
1296                         {
1297                                 strlcpy(&temp[1], buf, sizeof(temp));
1298                                 *temp = '0';
1299                                 return temp;
1300                         }
1301                         return buf;
1302                 }
1303                 break;
1304 #endif
1305                 case AF_INET:
1306                 {
1307                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1308                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1309                         return buf;
1310                 }
1311                 break;
1312                 default:
1313                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1314                 break;
1315         }
1316         return "";
1317 }
1318
1319 const char* userrec::GetIPString(char* buf)
1320 {
1321         if (this->ip == NULL)
1322         {
1323                 *buf = 0;
1324                 return buf;
1325         }
1326
1327         switch (this->GetProtocolFamily())
1328         {
1329 #ifdef SUPPORT_IP6LINKS
1330                 case AF_INET6:
1331                 {
1332                         static char temp[1024];
1333
1334                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1335                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1336                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1337                         if (*buf == ':')
1338                         {
1339                                 strlcpy(&temp[1], buf, sizeof(temp));
1340                                 *temp = '0';
1341                                 strlcpy(buf, temp, sizeof(temp));
1342                         }
1343                         return buf;
1344                 }
1345                 break;
1346 #endif
1347                 case AF_INET:
1348                 {
1349                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1350                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1351                         return buf;
1352                 }
1353                 break;
1354
1355                 default:
1356                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1357                 break;
1358         }
1359         return "";
1360 }
1361
1362 /** NOTE: We cannot pass a const reference to this method.
1363  * The string is changed by the workings of the method,
1364  * so that if we pass const ref, we end up copying it to
1365  * something we can change anyway. Makes sense to just let
1366  * the compiler do that copy for us.
1367  */
1368 void userrec::Write(std::string text)
1369 {
1370         if ((this->fd < 0) || (this->fd > MAX_DESCRIPTORS))
1371                 return;
1372
1373         try
1374         {
1375                 text.append("\r\n");
1376         }
1377         catch (...)
1378         {
1379                 ServerInstance->Log(DEBUG,"Exception in userrec::Write() std::string::append");
1380                 return;
1381         }
1382
1383         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1384         {
1385                 try
1386                 {
1387                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length());
1388                 }
1389                 catch (ModuleException& modexcept)
1390                 {
1391                         ServerInstance->Log(DEBUG,"Module exception caught: %s",modexcept.GetReason());
1392                 }
1393         }
1394         else
1395         {
1396                 this->AddWriteBuf(text);
1397         }
1398         ServerInstance->stats->statsSent += text.length();
1399 }
1400
1401 /** Write()
1402  */
1403 void userrec::Write(const char *text, ...)
1404 {
1405         va_list argsPtr;
1406         char textbuffer[MAXBUF];
1407
1408         va_start(argsPtr, text);
1409         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1410         va_end(argsPtr);
1411
1412         this->Write(std::string(textbuffer));
1413 }
1414
1415 void userrec::WriteServ(const std::string& text)
1416 {
1417         char textbuffer[MAXBUF];
1418
1419         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1420         this->Write(std::string(textbuffer));
1421 }
1422
1423 /** WriteServ()
1424  *  Same as Write(), except `text' is prefixed with `:server.name '.
1425  */
1426 void userrec::WriteServ(const char* text, ...)
1427 {
1428         va_list argsPtr;
1429         char textbuffer[MAXBUF];
1430
1431         va_start(argsPtr, text);
1432         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1433         va_end(argsPtr);
1434
1435         this->WriteServ(std::string(textbuffer));
1436 }
1437
1438
1439 void userrec::WriteFrom(userrec *user, const std::string &text)
1440 {
1441         char tb[MAXBUF];
1442
1443         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1444
1445         this->Write(std::string(tb));
1446 }
1447
1448
1449 /* write text from an originating user to originating user */
1450
1451 void userrec::WriteFrom(userrec *user, const char* text, ...)
1452 {
1453         va_list argsPtr;
1454         char textbuffer[MAXBUF];
1455
1456         va_start(argsPtr, text);
1457         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1458         va_end(argsPtr);
1459
1460         this->WriteFrom(user, std::string(textbuffer));
1461 }
1462
1463
1464 /* write text to an destination user from a source user (e.g. user privmsg) */
1465
1466 void userrec::WriteTo(userrec *dest, const char *data, ...)
1467 {
1468         char textbuffer[MAXBUF];
1469         va_list argsPtr;
1470
1471         va_start(argsPtr, data);
1472         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1473         va_end(argsPtr);
1474
1475         this->WriteTo(dest, std::string(textbuffer));
1476 }
1477
1478 void userrec::WriteTo(userrec *dest, const std::string &data)
1479 {
1480         dest->WriteFrom(this, data);
1481 }
1482
1483
1484 void userrec::WriteCommon(const char* text, ...)
1485 {
1486         char textbuffer[MAXBUF];
1487         va_list argsPtr;
1488
1489         if (this->registered != REG_ALL)
1490                 return;
1491
1492         va_start(argsPtr, text);
1493         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1494         va_end(argsPtr);
1495
1496         this->WriteCommon(std::string(textbuffer));
1497 }
1498
1499 void userrec::WriteCommon(const std::string &text)
1500 {
1501         try
1502         {
1503                 bool sent_to_at_least_one = false;
1504
1505                 if (this->registered != REG_ALL)
1506                         return;
1507
1508                 uniq_id++;
1509
1510                 for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1511                 {
1512                         ucrec *n = *v;
1513                         if (n->channel)
1514                         {
1515                                 CUList *ulist= n->channel->GetUsers();
1516
1517                                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1518                                 {
1519                                         if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1520                                         {
1521                                                 already_sent[i->second->fd] = uniq_id;
1522                                                 i->second->WriteFrom(this, std::string(text));
1523                                                 sent_to_at_least_one = true;
1524                                         }
1525                                 }
1526                         }
1527                 }
1528
1529                 /*
1530                  * if the user was not in any channels, no users will receive the text. Make sure the user
1531                  * receives their OWN message for WriteCommon
1532                  */
1533                 if (!sent_to_at_least_one)
1534                 {
1535                         this->WriteFrom(this,std::string(text));
1536                 }
1537         }
1538
1539         catch (...)
1540         {
1541                 ServerInstance->Log(DEBUG,"Exception in userrec::WriteCommon()");
1542         }
1543 }
1544
1545
1546 /* write a formatted string to all users who share at least one common
1547  * channel, NOT including the source user e.g. for use in QUIT
1548  */
1549
1550 void userrec::WriteCommonExcept(const char* text, ...)
1551 {
1552         char textbuffer[MAXBUF];
1553         va_list argsPtr;
1554
1555         va_start(argsPtr, text);
1556         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1557         va_end(argsPtr);
1558
1559         this->WriteCommonExcept(std::string(textbuffer));
1560 }
1561
1562 void userrec::WriteCommonExcept(const std::string &text)
1563 {
1564         bool quit_munge = false;
1565         char oper_quit[MAXBUF];
1566         char textbuffer[MAXBUF];
1567
1568         strlcpy(textbuffer, text.c_str(), MAXBUF);
1569
1570         if (this->registered != REG_ALL)
1571                 return;
1572
1573         uniq_id++;
1574
1575         /* TODO: We need some form of WriteCommonExcept that will send two lines, one line to
1576          * opers and the other line to non-opers, then all this hidebans and hidesplits gunk
1577          * can go byebye.
1578          */
1579         if (ServerInstance->Config->HideSplits)
1580         {
1581                 char* check = textbuffer + 6;
1582
1583                 if (!strncasecmp(textbuffer, "QUIT :",6))
1584                 {
1585                         std::stringstream split(check);
1586                         std::string server_one;
1587                         std::string server_two;
1588
1589                         split >> server_one;
1590                         split >> server_two;
1591
1592                         if ((ServerInstance->FindServerName(server_one)) && (ServerInstance->FindServerName(server_two)))
1593                         {
1594                                 strlcpy(oper_quit,textbuffer,MAXQUIT);
1595                                 strlcpy(check,"*.net *.split",MAXQUIT);
1596                                 quit_munge = true;
1597                         }
1598                 }
1599         }
1600
1601         if ((ServerInstance->Config->HideBans) && (!quit_munge))
1602         {
1603                 if ((!strncasecmp(textbuffer, "QUIT :G-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :K-Lined:",14))
1604                 || (!strncasecmp(textbuffer, "QUIT :Q-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :Z-Lined:",14)))
1605                 {
1606                         char* check = textbuffer + 13;
1607                         strlcpy(oper_quit,textbuffer,MAXQUIT);
1608                         *check = 0;  // We don't need to strlcpy, we just chop it from the :
1609                         quit_munge = true;
1610                 }
1611         }
1612
1613         for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1614         {
1615                 ucrec* n = *v;
1616                 if (n->channel)
1617                 {
1618                         CUList *ulist= n->channel->GetUsers();
1619
1620                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1621                         {
1622                                 if (this != i->second)
1623                                 {
1624                                         if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1625                                         {
1626                                                 already_sent[i->second->fd] = uniq_id;
1627                                                 if (quit_munge)
1628                                                         i->second->WriteFrom(this, *i->second->oper ? std::string(oper_quit) : std::string(textbuffer));
1629                                                 else
1630                                                         i->second->WriteFrom(this, std::string(textbuffer));
1631                                         }
1632                                 }
1633                         }
1634                 }
1635         }
1636
1637 }
1638
1639 void userrec::WriteWallOps(const std::string &text)
1640 {
1641         /* Does nothing if theyre not opered */
1642         if ((!*this->oper) && (IS_LOCAL(this)))
1643                 return;
1644
1645         std::string wallop = "WALLOPS :";
1646
1647         try
1648         {
1649                 wallop.append(text);
1650         }
1651         catch (...)
1652         {
1653                 ServerInstance->Log(DEBUG,"Exception in userrec::Write() std::string::append");
1654                 return;
1655         }
1656
1657         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1658         {
1659                 userrec* t = *i;
1660                 if ((IS_LOCAL(t)) && (t->modes[UM_WALLOPS]))
1661                         this->WriteTo(t,wallop);
1662         }
1663 }
1664
1665 void userrec::WriteWallOps(const char* text, ...)
1666 {
1667         char textbuffer[MAXBUF];
1668         va_list argsPtr;
1669
1670         va_start(argsPtr, text);
1671         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1672         va_end(argsPtr);
1673
1674         this->WriteWallOps(std::string(textbuffer));
1675 }
1676
1677 /* return 0 or 1 depending if users u and u2 share one or more common channels
1678  * (used by QUIT, NICK etc which arent channel specific notices)
1679  *
1680  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1681  * the first users channels then the second users channels within the outer loop,
1682  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1683  * all possible iterations). However this new function instead checks against the
1684  * channel's userlist in the inner loop which is a std::map<userrec*,userrec*>
1685  * and saves us time as we already know what pointer value we are after.
1686  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1687  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1688  */
1689 bool userrec::SharesChannelWith(userrec *other)
1690 {
1691         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1692                 return false;
1693
1694         /* Outer loop */
1695         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1696         {
1697                 /* Fetch the channel from the user */
1698                 ucrec* user_channel = *i;
1699
1700                 if (user_channel->channel)
1701                 {
1702                         /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1703                          * by replacing it with a map::find which *should* be more efficient
1704                          */
1705                         if (user_channel->channel->HasUser(other))
1706                                 return true;
1707                 }
1708         }
1709         return false;
1710 }
1711
1712 int userrec::CountChannels()
1713 {
1714         return ChannelCount;
1715 }
1716
1717 void userrec::ModChannelCount(int n)
1718 {
1719         ChannelCount += n;
1720 }
1721
1722 bool userrec::ChangeName(const char* gecos)
1723 {
1724         if (!strcmp(gecos, this->fullname))
1725                 return true;
1726
1727         if (IS_LOCAL(this))
1728         {
1729                 int MOD_RESULT = 0;
1730                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1731                 if (MOD_RESULT)
1732                         return false;
1733                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1734         }
1735         strlcpy(this->fullname,gecos,MAXGECOS+1);
1736         return true;
1737 }
1738
1739 bool userrec::ChangeDisplayedHost(const char* host)
1740 {
1741         if (!strcmp(host, this->dhost))
1742                 return true;
1743
1744         if (IS_LOCAL(this))
1745         {
1746                 int MOD_RESULT = 0;
1747                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host));
1748                 if (MOD_RESULT)
1749                         return false;
1750                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host));
1751         }
1752         if (this->ServerInstance->Config->CycleHosts)
1753                 this->WriteCommonExcept("%s","QUIT :Changing hosts");
1754
1755         strlcpy(this->dhost,host,63);
1756
1757         if (this->ServerInstance->Config->CycleHosts)
1758         {
1759                 for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1760                 {
1761                         if ((*i)->channel)
1762                         {
1763                                 (*i)->channel->WriteAllExceptSender(this, false, 0, "JOIN %s", (*i)->channel->name);
1764                                 std::string n = this->ServerInstance->Modes->ModeString(this, (*i)->channel);
1765                                 if (n.length() > 0)
1766                                         (*i)->channel->WriteAllExceptSender(this, true, 0, "MODE %s +%s", (*i)->channel->name, n.c_str());
1767                         }
1768                 }
1769         }
1770
1771         if (IS_LOCAL(this))
1772                 this->WriteServ("396 %s %s :is now your hidden host",this->nick,this->dhost);
1773
1774         return true;
1775 }
1776
1777 bool userrec::ChangeIdent(const char* newident)
1778 {
1779         if (!strcmp(newident, this->ident))
1780                 return true;
1781
1782         if (this->ServerInstance->Config->CycleHosts)
1783                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1784
1785         strlcpy(this->ident, newident, IDENTMAX+2);
1786
1787         if (this->ServerInstance->Config->CycleHosts)
1788         {
1789                 for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1790                 {
1791                         if ((*i)->channel)
1792                         {
1793                                 (*i)->channel->WriteAllExceptSender(this, false, 0, "JOIN %s", (*i)->channel->name);
1794                                 std::string n = this->ServerInstance->Modes->ModeString(this, (*i)->channel);
1795                                 if (n.length() > 0)
1796                                         (*i)->channel->WriteAllExceptSender(this, true, 0, "MODE %s +%s", (*i)->channel->name, n.c_str());
1797                         }
1798                 }
1799         }
1800
1801         return true;
1802 }
1803
1804 void userrec::NoticeAll(char* text, ...)
1805 {
1806         char textbuffer[MAXBUF];
1807         char formatbuffer[MAXBUF];
1808         va_list argsPtr;
1809
1810         va_start(argsPtr, text);
1811         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1812         va_end(argsPtr);
1813
1814         snprintf(formatbuffer,MAXBUF,"NOTICE $* :%s",textbuffer);
1815
1816         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1817         {
1818                 userrec* t = *i;
1819                 t->WriteFrom(this, std::string(formatbuffer));
1820         }
1821 }
1822
1823
1824 std::string userrec::ChannelList(userrec* source)
1825 {
1826         try
1827         {
1828                 std::string list;
1829                 for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1830                 {
1831                         ucrec* rec = *i;
1832
1833                         if(rec->channel && rec->channel->name)
1834                         {
1835                                 /* If the target is the same as the sender, let them see all their channels.
1836                                  * If the channel is NOT private/secret OR the user shares a common channel
1837                                  * If the user is an oper, and the <options:operspywhois> option is set.
1838                                  */
1839                                 if ((source == this) || (*source->oper && ServerInstance->Config->OperSpyWhois) || (((!rec->channel->modes[CM_PRIVATE]) && (!rec->channel->modes[CM_SECRET])) || (rec->channel->HasUser(source))))
1840                                 {
1841                                         list.append(rec->channel->GetPrefixChar(this)).append(rec->channel->name).append(" ");
1842                                 }
1843                         }
1844                 }
1845                 return list;
1846         }
1847         catch (...)
1848         {
1849                 ServerInstance->Log(DEBUG,"Exception in userrec::ChannelList()");
1850                 return "";
1851         }
1852 }
1853
1854 void userrec::SplitChanList(userrec* dest, const std::string &cl)
1855 {
1856         std::string line;
1857         std::ostringstream prefix;
1858         std::string::size_type start, pos, length;
1859
1860         try
1861         {
1862                 prefix << ":" << ServerInstance->Config->ServerName << " 319 " << this->nick << " " << dest->nick << " :";
1863                 line = prefix.str();
1864
1865                 for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1866                 {
1867                         length = (pos == std::string::npos) ? cl.length() : pos;
1868
1869                         if (line.length() + length - start > 510)
1870                         {
1871                                 this->Write(line);
1872                                 line = prefix.str();
1873                         }
1874
1875                         if(pos == std::string::npos)
1876                         {
1877                                 line.append(cl.substr(start, length - start));
1878                                 break;
1879                         }
1880                         else
1881                         {
1882                                 line.append(cl.substr(start, length - start + 1));
1883                         }
1884                 }
1885
1886                 if (line.length())
1887                 {
1888                         this->Write(line);
1889                 }
1890         }
1891
1892         catch (...)
1893         {
1894                 ServerInstance->Log(DEBUG,"Exception in userrec::SplitChanList()");
1895         }
1896 }
1897
1898
1899 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1900  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1901  * then their ip will be taken as 'priority' anyway, so for example,
1902  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1903  */
1904 ConnectClass& userrec::GetClass()
1905 {
1906         for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1907         {
1908                 if ((match(this->GetIPString(),i->host.c_str(),true)) || (match(this->host,i->host.c_str())))
1909                         return *i;
1910         }
1911
1912         return *(ServerInstance->Config->Classes.begin());
1913 }
1914
1915 void userrec::PurgeEmptyChannels()
1916 {
1917         std::vector<chanrec*> to_delete;
1918
1919         // firstly decrement the count on each channel
1920         for (std::vector<ucrec*>::iterator f = this->chans.begin(); f != this->chans.end(); f++)
1921         {
1922                 ucrec* uc = *f;
1923                 if (uc->channel)
1924                 {
1925                         uc->channel->RemoveAllPrefixes(this);
1926                         if (uc->channel->DelUser(this) == 0)
1927                         {
1928                                 /* No users left in here, mark it for deletion */
1929                                 try
1930                                 {
1931                                         to_delete.push_back(uc->channel);
1932                                 }
1933                                 catch (...)
1934                                 {
1935                                         ServerInstance->Log(DEBUG,"Exception in userrec::PurgeEmptyChannels to_delete.push_back()");
1936                                 }
1937                                 uc->channel = NULL;
1938                         }
1939                 }
1940         }
1941
1942         for (std::vector<chanrec*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1943         {
1944                 chanrec* thischan = *n;
1945                 chan_hash::iterator i2 = ServerInstance->chanlist.find(thischan->name);
1946                 if (i2 != ServerInstance->chanlist.end())
1947                 {
1948                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1949                         DELETE(i2->second);
1950                         ServerInstance->chanlist.erase(i2);
1951                 }
1952         }
1953
1954         this->UnOper();
1955 }
1956
1957 void userrec::ShowMOTD()
1958 {
1959         if (!ServerInstance->Config->MOTD.size())
1960         {
1961                 this->WriteServ("422 %s :Message of the day file is missing.",this->nick);
1962                 return;
1963         }
1964         this->WriteServ("375 %s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1965
1966         for (unsigned int i = 0; i < ServerInstance->Config->MOTD.size(); i++)
1967                 this->WriteServ("372 %s :- %s",this->nick,ServerInstance->Config->MOTD[i].c_str());
1968
1969         this->WriteServ("376 %s :End of message of the day.", this->nick);
1970 }
1971
1972 void userrec::ShowRULES()
1973 {
1974         if (!ServerInstance->Config->RULES.size())
1975         {
1976                 this->WriteServ("NOTICE %s :Rules file is missing.",this->nick);
1977                 return;
1978         }
1979         this->WriteServ("NOTICE %s :%s rules",this->nick,ServerInstance->Config->ServerName);
1980
1981         for (unsigned int i = 0; i < ServerInstance->Config->RULES.size(); i++)
1982                 this->WriteServ("NOTICE %s :%s",this->nick,ServerInstance->Config->RULES[i].c_str());
1983
1984         this->WriteServ("NOTICE %s :End of %s rules.",this->nick,ServerInstance->Config->ServerName);
1985 }
1986
1987 void userrec::HandleEvent(EventType et)
1988 {
1989         /* WARNING: May delete this user! */
1990         try
1991         {
1992                 ServerInstance->ProcessUser(this);
1993         }
1994         catch (...)
1995         {
1996                 ServerInstance->Log(DEBUG,"Exception in userrec::HandleEvent intercepted");
1997         }
1998 }
1999