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         if (conf->opertypes.size())
  35         {
  36                 conf->GetInstance()->Log(DEBUG,"Currently %d items to clear",conf->opertypes.size());
  37                 for (opertype_t::iterator n = conf->opertypes.begin(); n != conf->opertypes.end(); n++)
  38                 {
  39                         conf->GetInstance()->Log(DEBUG,"Clear item");
  40                         if (n->second)
  41                                 delete[] n->second;
  42                 }
  43         }
  44
  45         conf->opertypes.clear();
  46         return true;
  47 }
  48
  49 bool InitClasses(ServerConfig* conf, const char* tag)
  50 {
  51         if (conf->operclass.size())
  52         {
  53                 for (operclass_t::iterator n = conf->operclass.begin(); n != conf->operclass.end(); n++)
  54                 {
  55                         if (n->second)
  56                                 delete[] n->second;
  57                 }
  58         }
  59
  60         conf->operclass.clear();
  61         return true;
  62 }
  63
  64 bool DoType(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
  65 {
  66         char* TypeName = (char*)values[0];
  67         char* Classes = (char*)values[1];
  68
  69         conf->opertypes[TypeName] = strdup(Classes);
  70         conf->GetInstance()->Log(DEBUG,"Read oper TYPE '%s' with classes '%s'",TypeName,Classes);
  71         return true;
  72 }
  73
  74 bool DoClass(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
  75 {
  76         char* ClassName = (char*)values[0];
  77         char* CommandList = (char*)values[1];
  78
  79         conf->operclass[ClassName] = strdup(CommandList);
  80         conf->GetInstance()->Log(DEBUG,"Read oper CLASS '%s' with commands '%s'",ClassName,CommandList);
  81         return true;
  82 }
  83
  84 bool DoneClassesAndTypes(ServerConfig* conf, const char* tag)
  85 {
  86         return true;
  87 }
  88
  89 std::string userrec::ProcessNoticeMasks(const char *sm)
  90 {
  91         bool adding = true, oldadding = false;
  92         const char *c = sm;
  93         std::string output;
  94
  95         ServerInstance->Log(DEBUG,"Process notice masks");
  96
  97         while (c && *c)
  98         {
  99                 ServerInstance->Log(DEBUG,"Process notice mask %c",*c);
 100
 101                 switch (*c)
 102                 {
 103                         case '+':
 104                                 adding = true;
 105                         break;
 106                         case '-':
 107                                 adding = false;
 108                         break;
 109                         case '*':
 110                                 for (unsigned char d = 'A'; d <= 'z'; d++)
 111                                 {
 112                                         if (ServerInstance->SNO->IsEnabled(d))
 113                                         {
 114                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
 115                                                 {
 116                                                         if ((oldadding != adding) || (!output.length()))
 117                                                                 output += (adding ? '+' : '-');
 118
 119                                                         this->SetNoticeMask(d, adding);
 120
 121                                                         output += d;
 122                                                 }
 123                                         }
 124                                         oldadding = adding;
 125                                 }
 126                         break;
 127                         default:
 128                                 if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c)))
 129                                 {
 130                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
 131                                         {
 132                                                 if ((oldadding != adding) || (!output.length()))
 133                                                         output += (adding ? '+' : '-');
 134
 135                                                 this->SetNoticeMask(*c, adding);
 136
 137                                                 output += *c;
 138                                         }
 139                                 }
 140                                 oldadding = adding;
 141                         break;
 142                 }
 143
 144                 *c++;
 145         }
 146
 147         return output;
 148 }
 149
 150 void userrec::StartDNSLookup()
 151 {
 152         ServerInstance->Log(DEBUG,"Commencing reverse lookup");
 153         try
 154         {
 155                 ServerInstance->Log(DEBUG,"Passing instance: %08x",this->ServerInstance);
 156                 res_reverse = new UserResolver(this->ServerInstance, this, this->GetIPString(), false);
 157                 this->ServerInstance->AddResolver(res_reverse);
 158         }
 159         catch (ModuleException& e)
 160         {
 161                 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
 162         }
 163 }
 164
 165 UserResolver::UserResolver(InspIRCd* Instance, userrec* user, std::string to_resolve, bool forward) :
 166         Resolver(Instance, to_resolve, forward ? DNS_QUERY_FORWARD : DNS_QUERY_REVERSE), bound_user(user)
 167 {
 168         this->fwd = forward;
 169         this->bound_fd = user->GetFd();
 170 }
 171
 172 void UserResolver::OnLookupComplete(const std::string &result)
 173 {
 174         if ((!this->fwd) && (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user))
 175         {
 176                 ServerInstance->Log(DEBUG,"Commencing forward lookup");
 177                 this->bound_user->stored_host = result;
 178                 try
 179                 {
 180                         /* Check we didnt time out */
 181                         if (this->bound_user->registered != REG_ALL)
 182                         {
 183                                 bound_user->res_forward = new UserResolver(this->ServerInstance, this->bound_user, result, true);
 184                                 this->ServerInstance->AddResolver(bound_user->res_forward);
 185                         }
 186                 }
 187                 catch (ModuleException& e)
 188                 {
 189                         ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
 190                 }
 191         }
 192         else if ((this->fwd) && (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user))
 193         {
 194                 /* Both lookups completed */
 195                 if (this->bound_user->GetIPString() == result)
 196                 {
 197                         std::string hostname = this->bound_user->stored_host;
 198                         if (hostname.length() < 65)
 199                         {
 200                                 /* Check we didnt time out */
 201                                 if (this->bound_user->registered != REG_ALL)
 202                                 {
 203                                         /* Hostnames starting with : are not a good thing (tm) */
 204                                         if (*(hostname.c_str()) == ':')
 205                                                 hostname = "0" + hostname;
 206
 207                                         this->bound_user->WriteServ("NOTICE Auth :*** Found your hostname (%s)", hostname.c_str());
 208                                         this->bound_user->dns_done = true;
 209                                         strlcpy(this->bound_user->dhost, hostname.c_str(),64);
 210                                         strlcpy(this->bound_user->host, hostname.c_str(),64);
 211                                 }
 212                         }
 213                         else
 214                         {
 215                                 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());
 216                         }
 217                 }
 218                 else
 219                 {
 220                         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());
 221                 }
 222         }
 223 }
 224
 225 void UserResolver::OnError(ResolverError e, const std::string &errormessage)
 226 {
 227         if (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user)
 228         {
 229                 /* Error message here */
 230                 this->bound_user->WriteServ("NOTICE Auth :*** Could not resolve your hostname, using your IP address (%s) instead.", this->bound_user->GetIPString());
 231                 this->bound_user->dns_done = true;
 232         }
 233 }
 234
 235
 236 bool userrec::IsNoticeMaskSet(unsigned char sm)
 237 {
 238         return (snomasks[sm-65]);
 239 }
 240
 241 void userrec::SetNoticeMask(unsigned char sm, bool value)
 242 {
 243         snomasks[sm-65] = value;
 244 }
 245
 246 const char* userrec::FormatNoticeMasks()
 247 {
 248         static char data[MAXBUF];
 249         int offset = 0;
 250
 251         for (int n = 0; n < 64; n++)
 252         {
 253                 if (snomasks[n])
 254                         data[offset++] = n+65;
 255         }
 256
 257         data[offset] = 0;
 258         return data;
 259 }
 260
 261
 262
 263 bool userrec::IsModeSet(unsigned char m)
 264 {
 265         return (modes[m-65]);
 266 }
 267
 268 void userrec::SetMode(unsigned char m, bool value)
 269 {
 270         modes[m-65] = value;
 271 }
 272
 273 const char* userrec::FormatModes()
 274 {
 275         static char data[MAXBUF];
 276         int offset = 0;
 277         for (int n = 0; n < 64; n++)
 278         {
 279                 if (modes[n])
 280                         data[offset++] = n+65;
 281         }
 282         data[offset] = 0;
 283         return data;
 284 }
 285
 286 userrec::userrec(InspIRCd* Instance) : ServerInstance(Instance)
 287 {
 288         ServerInstance->Log(DEBUG,"userrec::userrec(): Instance: %08x",ServerInstance);
 289         // the PROPER way to do it, AVOID bzero at *ALL* costs
 290         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = 0;
 291         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 292         reset_due = ServerInstance->Time();
 293         lines_in = lastping = signon = idle_lastmsg = nping = registered = 0;
 294         ChannelCount = timeout = flood = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 295         haspassed = dns_done = false;
 296         fd = -1;
 297         recvq = "";
 298         sendq = "";
 299         WriteError = "";
 300         res_forward = res_reverse = NULL;
 301         ip = NULL;
 302         chans.clear();
 303         invites.clear();
 304         chans.resize(MAXCHANS);
 305         memset(modes,0,sizeof(modes));
 306         memset(snomasks,0,sizeof(snomasks));
 307
 308         for (unsigned int n = 0; n < MAXCHANS; n++)
 309         {
 310                 chans[n] = new ucrec();
 311                 chans[n]->channel = NULL;
 312                 chans[n]->uc_modes = 0;
 313         }
 314 }
 315
 316 userrec::~userrec()
 317 {
 318         for (std::vector<ucrec*>::iterator n = chans.begin(); n != chans.end(); n++)
 319         {
 320                 ucrec* x = (ucrec*)*n;
 321                 delete x;
 322         }
 323
 324         if (ip)
 325         {
 326                 if (this->GetProtocolFamily() == AF_INET)
 327                 {
 328                         delete (sockaddr_in*)ip;
 329                 }
 330 #ifdef SUPPORT_IP6LINKS
 331                 else
 332                 {
 333                         delete (sockaddr_in6*)ip;
 334                 }
 335 #endif
 336         }
 337 }
 338
 339 /* XXX - minor point, other *Host functions return a char *, this one creates it. Might be nice to be consistant? */
 340 void userrec::MakeHost(char* nhost)
 341 {
 342         /* This is much faster than snprintf */
 343         char* t = nhost;
 344         for(char* n = ident; *n; n++)
 345                 *t++ = *n;
 346         *t++ = '@';
 347         for(char* n = host; *n; n++)
 348                 *t++ = *n;
 349         *t = 0;
 350 }
 351
 352 void userrec::CloseSocket()
 353 {
 354         shutdown(this->fd,2);
 355         close(this->fd);
 356 }
 357
 358 char* userrec::GetFullHost()
 359 {
 360         static char result[MAXBUF];
 361         char* t = result;
 362         for(char* n = nick; *n; n++)
 363                 *t++ = *n;
 364         *t++ = '!';
 365         for(char* n = ident; *n; n++)
 366                 *t++ = *n;
 367         *t++ = '@';
 368         for(char* n = dhost; *n; n++)
 369                 *t++ = *n;
 370         *t = 0;
 371         return result;
 372 }
 373
 374 char* userrec::MakeWildHost()
 375 {
 376         static char nresult[MAXBUF];
 377         char* t = nresult;
 378         *t++ = '*';     *t++ = '!';
 379         *t++ = '*';     *t++ = '@';
 380         for(char* n = dhost; *n; n++)
 381                 *t++ = *n;
 382         *t = 0;
 383         return nresult;
 384 }
 385
 386 int userrec::ReadData(void* buffer, size_t size)
 387 {
 388         if (IS_LOCAL(this))
 389         {
 390                 return read(this->fd, buffer, size);
 391         }
 392         else
 393                 return 0;
 394 }
 395
 396
 397 char* userrec::GetFullRealHost()
 398 {
 399         static char fresult[MAXBUF];
 400         char* t = fresult;
 401         for(char* n = nick; *n; n++)
 402                 *t++ = *n;
 403         *t++ = '!';
 404         for(char* n = ident; *n; n++)
 405                 *t++ = *n;
 406         *t++ = '@';
 407         for(char* n = host; *n; n++)
 408                 *t++ = *n;
 409         *t = 0;
 410         return fresult;
 411 }
 412
 413 bool userrec::IsInvited(irc::string &channel)
 414 {
 415         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 416         {
 417                 irc::string compare = i->channel;
 418
 419                 if (compare == channel)
 420                 {
 421                         return true;
 422                 }
 423         }
 424         return false;
 425 }
 426
 427 InvitedList* userrec::GetInviteList()
 428 {
 429         return &invites;
 430 }
 431
 432 void userrec::InviteTo(irc::string &channel)
 433 {
 434         Invited i;
 435         i.channel = channel;
 436         invites.push_back(i);
 437 }
 438
 439 void userrec::RemoveInvite(irc::string &channel)
 440 {
 441         ServerInstance->Log(DEBUG,"Removing invites");
 442
 443         if (invites.size())
 444         {
 445                 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 446                 {
 447                         irc::string compare = i->channel;
 448
 449                         if (compare == channel)
 450                         {
 451                                 invites.erase(i);
 452                                 return;
 453                         }
 454                 }
 455         }
 456 }
 457
 458 bool userrec::HasPermission(const std::string &command)
 459 {
 460         char* mycmd;
 461         char* savept;
 462         char* savept2;
 463
 464         /*
 465          * users on remote servers can completely bypass all permissions based checks.
 466          * This prevents desyncs when one server has different type/class tags to another.
 467          * That having been said, this does open things up to the possibility of source changes
 468          * allowing remote kills, etc - but if they have access to the src, they most likely have
 469          * access to the conf - so it's an end to a means either way.
 470          */
 471         if (!IS_LOCAL(this))
 472                 return true;
 473
 474         // are they even an oper at all?
 475         if (*this->oper)
 476         {
 477                 opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper);
 478                 if (iter_opertype != ServerInstance->Config->opertypes.end())
 479                 {
 480                         char* Classes = strdup(iter_opertype->second);
 481                         char* myclass = strtok_r(Classes," ",&savept);
 482                         while (myclass)
 483                         {
 484                                 operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass);
 485                                 if (iter_operclass != ServerInstance->Config->operclass.end())
 486                                 {
 487                                         char* CommandList = strdup(iter_operclass->second);
 488                                         mycmd = strtok_r(CommandList," ",&savept2);
 489                                         while (mycmd)
 490                                         {
 491                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 492                                                 {
 493                                                         free(Classes);
 494                                                         free(CommandList);
 495                                                         return true;
 496                                                 }
 497                                                 mycmd = strtok_r(NULL," ",&savept2);
 498                                         }
 499                                         free(CommandList);
 500                                 }
 501                                 myclass = strtok_r(NULL," ",&savept);
 502                         }
 503                         free(Classes);
 504                 }
 505         }
 506         return false;
 507 }
 508
 509 /** NOTE: We cannot pass a const reference to this method.
 510  * The string is changed by the workings of the method,
 511  * so that if we pass const ref, we end up copying it to
 512  * something we can change anyway. Makes sense to just let
 513  * the compiler do that copy for us.
 514  */
 515 bool userrec::AddBuffer(std::string a)
 516 {
 517         try
 518         {
 519                 std::string::size_type i = a.rfind('\r');
 520
 521                 while (i != std::string::npos)
 522                 {
 523                         a.erase(i, 1);
 524                         i = a.rfind('\r');
 525                 }
 526
 527                 if (a.length())
 528                         recvq.append(a);
 529
 530                 if (recvq.length() > (unsigned)this->recvqmax)
 531                 {
 532                         this->SetWriteError("RecvQ exceeded");
 533                         ServerInstance->WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 534                         return false;
 535                 }
 536
 537                 return true;
 538         }
 539
 540         catch (...)
 541         {
 542                 ServerInstance->Log(DEBUG,"Exception in userrec::AddBuffer()");
 543                 return false;
 544         }
 545 }
 546
 547 bool userrec::BufferIsReady()
 548 {
 549         return (recvq.find('\n') != std::string::npos);
 550 }
 551
 552 void userrec::ClearBuffer()
 553 {
 554         recvq = "";
 555 }
 556
 557 std::string userrec::GetBuffer()
 558 {
 559         try
 560         {
 561                 if (!recvq.length())
 562                         return "";
 563
 564                 /* Strip any leading \r or \n off the string.
 565                  * Usually there are only one or two of these,
 566                  * so its is computationally cheap to do.
 567                  */
 568                 while ((*recvq.begin() == '\r') || (*recvq.begin() == '\n'))
 569                         recvq.erase(recvq.begin());
 570
 571                 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 572                 {
 573                         /* Find the first complete line, return it as the
 574                          * result, and leave the recvq as whats left
 575                          */
 576                         if (*x == '\n')
 577                         {
 578                                 std::string ret = std::string(recvq.begin(), x);
 579                                 recvq.erase(recvq.begin(), x + 1);
 580                                 return ret;
 581                         }
 582                 }
 583                 return "";
 584         }
 585
 586         catch (...)
 587         {
 588                 ServerInstance->Log(DEBUG,"Exception in userrec::GetBuffer()");
 589                 return "";
 590         }
 591 }
 592
 593 void userrec::AddWriteBuf(const std::string &data)
 594 {
 595         if (*this->GetWriteError())
 596                 return;
 597
 598         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 599         {
 600                 /*
 601                  * Fix by brain - Set the error text BEFORE calling writeopers, because
 602                  * if we dont it'll recursively  call here over and over again trying
 603                  * to repeatedly add the text to the sendq!
 604                  */
 605                 this->SetWriteError("SendQ exceeded");
 606                 ServerInstance->WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 607                 return;
 608         }
 609
 610         try
 611         {
 612                 if (data.length() > 512)
 613                 {
 614                         std::string newdata(data);
 615                         newdata.resize(510);
 616                         newdata.append("\r\n");
 617                         sendq.append(newdata);
 618                 }
 619                 else
 620                 {
 621                         sendq.append(data);
 622                 }
 623         }
 624         catch (...)
 625         {
 626                 this->SetWriteError("SendQ exceeded");
 627                 ServerInstance->WriteOpers("*** User %s SendQ got an exception",this->nick);
 628         }
 629 }
 630
 631 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 632 void userrec::FlushWriteBuf()
 633 {
 634         try
 635         {
 636                 if (this->fd == FD_MAGIC_NUMBER)
 637                 {
 638                         sendq = "";
 639                 }
 640                 if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 641                 {
 642                         const char* tb = this->sendq.c_str();
 643                         int n_sent = write(this->fd,tb,this->sendq.length());
 644                         if (n_sent == -1)
 645                         {
 646                                 if (errno != EAGAIN)
 647                                         this->SetWriteError(strerror(errno));
 648                         }
 649                         else
 650                         {
 651                                 // advance the queue
 652                                 tb += n_sent;
 653                                 this->sendq = tb;
 654                                 // update the user's stats counters
 655                                 this->bytes_out += n_sent;
 656                                 this->cmds_out++;
 657                         }
 658                 }
 659         }
 660
 661         catch (...)
 662         {
 663                 ServerInstance->Log(DEBUG,"Exception in userrec::FlushWriteBuf()");
 664         }
 665 }
 666
 667 void userrec::SetWriteError(const std::string &error)
 668 {
 669         try
 670         {
 671                 ServerInstance->Log(DEBUG,"SetWriteError: %s",error.c_str());
 672                 // don't try to set the error twice, its already set take the first string.
 673                 if (!this->WriteError.length())
 674                 {
 675                         ServerInstance->Log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 676                         this->WriteError = error;
 677                 }
 678         }
 679
 680         catch (...)
 681         {
 682                 ServerInstance->Log(DEBUG,"Exception in userrec::SetWriteError()");
 683         }
 684 }
 685
 686 const char* userrec::GetWriteError()
 687 {
 688         return this->WriteError.c_str();
 689 }
 690
 691 void userrec::Oper(const std::string &opertype)
 692 {
 693         try
 694         {
 695                 this->modes[UM_OPERATOR] = 1;
 696                 this->WriteServ("MODE %s :+o", this->nick);
 697                 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 698                 ServerInstance->Log(DEFAULT,"OPER: %s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 699                 strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 700                 ServerInstance->all_opers.push_back(this);
 701                 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype));
 702         }
 703
 704         catch (...)
 705         {
 706                 ServerInstance->Log(DEBUG,"Exception in userrec::Oper()");
 707         }
 708 }
 709
 710 void userrec::UnOper()
 711 {
 712         try
 713         {
 714                 if (*this->oper)
 715                 {
 716                         *this->oper = 0;
 717                         this->modes[UM_OPERATOR] = 0;
 718                         for (std::vector<userrec*>::iterator a = ServerInstance->all_opers.begin(); a < ServerInstance->all_opers.end(); a++)
 719                         {
 720                                 if (*a == this)
 721                                 {
 722                                         ServerInstance->Log(DEBUG,"Oper removed from optimization list");
 723                                         ServerInstance->all_opers.erase(a);
 724                                         return;
 725                                 }
 726                         }
 727                 }
 728         }
 729
 730         catch (...)
 731         {
 732                 ServerInstance->Log(DEBUG,"Exception in userrec::UnOper()");
 733         }
 734 }
 735
 736 void userrec::QuitUser(InspIRCd* Instance, userrec *user, const std::string &quitreason)
 737 {
 738         user_hash::iterator iter = Instance->clientlist.find(user->nick);
 739         std::string reason = quitreason;
 740
 741         if (reason.length() > MAXQUIT - 1)
 742                 reason.resize(MAXQUIT - 1);
 743
 744         if (IS_LOCAL(user))
 745                 user->Write("ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason.c_str());
 746
 747         if (user->registered == REG_ALL)
 748         {
 749                 user->PurgeEmptyChannels();
 750                 FOREACH_MOD_I(Instance,I_OnUserQuit,OnUserQuit(user,reason));
 751                 user->WriteCommonExcept("QUIT :%s",reason.c_str());
 752         }
 753
 754         if (IS_LOCAL(user))
 755                 user->FlushWriteBuf();
 756
 757         FOREACH_MOD_I(Instance,I_OnUserDisconnect,OnUserDisconnect(user));
 758
 759         if (IS_LOCAL(user))
 760         {
 761                 if (Instance->Config->GetIOHook(user->GetPort()))
 762                 {
 763                         try
 764                         {
 765                                 Instance->Config->GetIOHook(user->GetPort())->OnRawSocketClose(user->fd);
 766                         }
 767                         catch (ModuleException& modexcept)
 768                         {
 769                                 Instance->Log(DEBUG,"Module exception cought: %s",modexcept.GetReason());
 770                         }
 771                 }
 772
 773                 Instance->SE->DelFd(user);
 774                 user->CloseSocket();
 775         }
 776
 777         /*
 778          * this must come before the ServerInstance->SNO->WriteToSnoMaskso that it doesnt try to fill their buffer with anything
 779          * if they were an oper with +sn +qQ.
 780          */
 781         if (user->registered == REG_ALL)
 782         {
 783                 if (IS_LOCAL(user))
 784                         Instance->SNO->WriteToSnoMask('q',"Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason.c_str());
 785                 else
 786                         Instance->SNO->WriteToSnoMask('Q',"Client exiting on server %s: %s!%s@%s [%s]",user->server,user->nick,user->ident,user->host,reason.c_str());
 787                 user->AddToWhoWas();
 788         }
 789
 790         if (iter != Instance->clientlist.end())
 791         {
 792                 Instance->Log(DEBUG,"deleting user hash value %lx",(unsigned long)user);
 793                 if (IS_LOCAL(user))
 794                 {
 795                         if (find(Instance->local_users.begin(),Instance->local_users.end(),user) != Instance->local_users.end())
 796                                 Instance->local_users.erase(find(Instance->local_users.begin(),Instance->local_users.end(),user));
 797                 }
 798                 Instance->clientlist.erase(iter);
 799                 DELETE(user);
 800         }
 801 }
 802
 803 namespace irc
 804 {
 805         namespace whowas
 806         {
 807
 808                 WhoWasGroup::WhoWasGroup(userrec* user) : host(NULL), dhost(NULL), ident(NULL), server(NULL), gecos(NULL), signon(user->signon)
 809                 {
 810                         this->host = strdup(user->host);
 811                         this->dhost = strdup(user->dhost);
 812                         this->ident = strdup(user->ident);
 813                         this->server = user->server;
 814                         this->gecos = strdup(user->fullname);
 815                 }
 816
 817                 WhoWasGroup::~WhoWasGroup()
 818                 {
 819                         if (host)
 820                                 free(host);
 821                         if (dhost)
 822                                 free(dhost);
 823                         if (ident)
 824                                 free(ident);
 825                         if (gecos)
 826                                 free(gecos);
 827                 }
 828
 829                 /* every hour, run this function which removes all entries over 3 days */
 830                 void MaintainWhoWas(InspIRCd* ServerInstance, time_t t)
 831                 {
 832                         for (whowas_users::iterator iter = ServerInstance->whowas.begin(); iter != ServerInstance->whowas.end(); iter++)
 833                         {
 834                                 whowas_set* n = (whowas_set*)iter->second;
 835                                 if (n->size())
 836                                 {
 837                                         while ((n->begin() != n->end()) && ((*n->begin())->signon < t - 259200)) // 3 days
 838                                         {
 839                                                 WhoWasGroup *a = *(n->begin());
 840                                                 DELETE(a);
 841                                                 n->erase(n->begin());
 842                                         }
 843                                 }
 844                         }
 845                 }
 846         };
 847 };
 848
 849 /* adds or updates an entry in the whowas list */
 850 void userrec::AddToWhoWas()
 851 {
 852         irc::whowas::whowas_users::iterator iter = ServerInstance->whowas.find(this->nick);
 853
 854         ServerInstance->Log(DEBUG,"Add to whowas lists");
 855
 856         if (iter == ServerInstance->whowas.end())
 857         {
 858                 ServerInstance->Log(DEBUG,"Adding new whowas set for %s",this->nick);
 859                 irc::whowas::whowas_set* n = new irc::whowas::whowas_set;
 860                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 861                 n->push_back(a);
 862                 ServerInstance->whowas[this->nick] = n;
 863         }
 864         else
 865         {
 866                 irc::whowas::whowas_set* group = (irc::whowas::whowas_set*)iter->second;
 867
 868                 ServerInstance->Log(DEBUG,"Using existing whowas group for %s",this->nick);
 869
 870                 if (group->size() > 10)
 871                 {
 872                         ServerInstance->Log(DEBUG,"Trimming existing group to ten entries for %s",this->nick);
 873                         irc::whowas::WhoWasGroup *a = (irc::whowas::WhoWasGroup*)*(group->begin());
 874                         DELETE(a);
 875                         group->pop_front();
 876                 }
 877
 878                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 879                 group->push_back(a);
 880         }
 881 }
 882
 883 /* add a client connection to the sockets list */
 884 void userrec::AddClient(InspIRCd* Instance, int socket, int port, bool iscached, insp_inaddr ip)
 885 {
 886         std::string tempnick = ConvToStr(socket) + "-unknown";
 887         user_hash::iterator iter = Instance->clientlist.find(tempnick);
 888         const char *ipaddr = insp_ntoa(ip);
 889         userrec* New;
 890         int j = 0;
 891
 892         /*
 893          * fix by brain.
 894          * as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 895          * using one as a registered connection. As they are per fd, we can also safely assume
 896          * that we wont have collisions. Therefore, if the nick exists in the list, its only
 897          * used by a dead socket, erase the iterator so that the new client may reclaim it.
 898          * this was probably the cause of 'server ignores me when i hammer it with reconnects'
 899          * issue in earlier alphas/betas
 900          */
 901         if (iter != Instance->clientlist.end())
 902         {
 903                 userrec* goner = iter->second;
 904                 DELETE(goner);
 905                 Instance->clientlist.erase(iter);
 906         }
 907
 908         Instance->Log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr);
 909
 910         New = new userrec(Instance);
 911         Instance->clientlist[tempnick] = New;
 912         New->fd = socket;
 913         strlcpy(New->nick,tempnick.c_str(),NICKMAX-1);
 914
 915         New->server = Instance->FindServerNamePtr(Instance->Config->ServerName);
 916         /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
 917         strcpy(New->ident, "unknown");
 918
 919         New->registered = REG_NONE;
 920         New->signon = Instance->Time() + Instance->Config->dns_timeout;
 921         New->lastping = 1;
 922
 923         Instance->Log(DEBUG,"Setting socket addresses");
 924         New->SetSockAddr(AF_FAMILY, ipaddr, port);
 925         Instance->Log(DEBUG,"Socket addresses set.");
 926
 927         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
 928         for (const char* temp = New->GetIPString(); *temp && j < 64; temp++, j++)
 929                 New->dhost[j] = New->host[j] = *temp;
 930         New->dhost[j] = New->host[j] = 0;
 931
 932         Instance->Log(DEBUG,"Hosts set.");
 933
 934         // set the registration timeout for this user
 935         unsigned long class_regtimeout = 90;
 936         int class_flood = 0;
 937         long class_threshold = 5;
 938         long class_sqmax = 262144;      // 256kb
 939         long class_rqmax = 4096;        // 4k
 940
 941         Instance->Log(DEBUG,"Class stuff set.");
 942
 943         for (ClassVector::iterator i = Instance->Config->Classes.begin(); i != Instance->Config->Classes.end(); i++)
 944         {
 945                 if ((i->type == CC_ALLOW) && (match(ipaddr,i->host.c_str(),true)))
 946                 {
 947                         class_regtimeout = (unsigned long)i->registration_timeout;
 948                         class_flood = i->flood;
 949                         New->pingmax = i->pingtime;
 950                         class_threshold = i->threshold;
 951                         class_sqmax = i->sendqmax;
 952                         class_rqmax = i->recvqmax;
 953                         break;
 954                 }
 955         }
 956
 957         Instance->Log(DEBUG,"nping etc set.");
 958
 959         New->nping = Instance->Time() + New->pingmax + Instance->Config->dns_timeout;
 960         New->timeout = Instance->Time() + class_regtimeout;
 961         New->flood = class_flood;
 962         New->threshold = class_threshold;
 963         New->sendqmax = class_sqmax;
 964         New->recvqmax = class_rqmax;
 965
 966         Instance->Log(DEBUG,"Push back to local users.");
 967         Instance->local_users.push_back(New);
 968
 969         Instance->Log(DEBUG,"Check softlimit: %d %d %d",Instance->local_users.size(), Instance->Config->SoftLimit, MAXCLIENTS);
 970         if ((Instance->local_users.size() > Instance->Config->SoftLimit) || (Instance->local_users.size() >= MAXCLIENTS))
 971         {
 972                 Instance->Log(DEBUG,"Check softlimit failed");
 973                 Instance->WriteOpers("*** Warning: softlimit value has been reached: %d clients", Instance->Config->SoftLimit);
 974                 userrec::QuitUser(Instance, New,"No more connections allowed");
 975                 return;
 976         }
 977
 978         Instance->Log(DEBUG,"Softlimit passed.");
 979
 980         /*
 981          * XXX -
 982          * this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 983          * its a pretty big but for the moment valid assumption:
 984          * file descriptors are handed out starting at 0, and are recycled as theyre freed.
 985          * therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 986          * irc server at once (or the irc server otherwise initiating this many connections, files etc)
 987          * which for the time being is a physical impossibility (even the largest networks dont have more
 988          * than about 10,000 users on ONE server!)
 989          */
 990         if ((unsigned int)socket >= MAX_DESCRIPTORS)
 991         {
 992                 userrec::QuitUser(Instance, New, "Server is full");
 993                 return;
 994         }
 995
 996         Instance->Log(DEBUG,"socket < MAX_DESCRIPTORS passed.");
 997
 998         ELine* e = Instance->XLines->matches_exception(New);
 999         if (!e)
1000         {
1001                 Instance->Log(DEBUG,"Doesnt match eline.");
1002                 ZLine* r = Instance->XLines->matches_zline(ipaddr);
1003                 if (r)
1004                 {
1005                         Instance->Log(DEBUG,"Matches zline.");
1006                         char reason[MAXBUF];
1007                         snprintf(reason,MAXBUF,"Z-Lined: %s",r->reason);
1008                         userrec::QuitUser(Instance, New, reason);
1009                         return;
1010                 }
1011                 Instance->Log(DEBUG,"Doesnt match zline.");
1012         }
1013
1014         Instance->Log(DEBUG,"Check before AddFd.");
1015
1016         if (socket > -1)
1017         {
1018                 Instance->Log(DEBUG,"Adding fd.");
1019                 if (!Instance->SE->AddFd(New))
1020                 {
1021                         Instance->Log(DEBUG,"Oops, fd already exists");
1022                         userrec::QuitUser(Instance, New, "Internal error handling connection");
1023                         return;
1024                 }
1025         }
1026
1027         New->WriteServ("NOTICE Auth :*** Looking up your hostname...");
1028 }
1029
1030 long userrec::GlobalCloneCount()
1031 {
1032         char u2[128];
1033         long x = 0;
1034         strlcpy(u2, this->GetIPString(), 64);
1035
1036         for (user_hash::const_iterator a = ServerInstance->clientlist.begin(); a != ServerInstance->clientlist.end(); a++)
1037         {
1038                 /* We have to match ip's as strings - we don't know what protocol
1039                  * a remote user may be using
1040                  */
1041                 if (strcasecmp(a->second->GetIPString(), u2) == 0)
1042                         x++;
1043         }
1044
1045         return x;
1046 }
1047
1048 long userrec::LocalCloneCount()
1049 {
1050         long x = 0;
1051         for (std::vector<userrec*>::const_iterator a = ServerInstance->local_users.begin(); a != ServerInstance->local_users.end(); a++)
1052         {
1053                 userrec* comp = *a;
1054 #ifdef IPV6
1055                 /* I dont think theres any faster way of matching two ipv6 addresses than memcmp */
1056                 in6_addr* s1 = &(((sockaddr_in6*)comp->ip)->sin6_addr);
1057                 in6_addr* s2 = &(((sockaddr_in6*)this->ip)->sin6_addr);
1058                 if (!memcmp(s1->s6_addr, s2->s6_addr, sizeof(in6_addr)))
1059                         x++;
1060 #else
1061                 in_addr* s1 = &((sockaddr_in*)comp->ip)->sin_addr;
1062                 in_addr* s2 = &((sockaddr_in*)this->ip)->sin_addr;
1063                 if (s1->s_addr == s2->s_addr)
1064                         x++;
1065 #endif
1066         }
1067         return x;
1068 }
1069
1070 void userrec::FullConnect(CullList* Goners)
1071 {
1072         ServerInstance->stats->statsConnects++;
1073         this->idle_lastmsg = ServerInstance->Time();
1074
1075         ConnectClass a = this->GetClass();
1076
1077         if (a.type == CC_DENY)
1078         {
1079                 Goners->AddItem(this,"Unauthorised connection");
1080                 return;
1081         }
1082
1083         if ((*(a.pass.c_str())) && (!this->haspassed))
1084         {
1085                 Goners->AddItem(this,"Invalid password");
1086                 return;
1087         }
1088
1089         if (this->LocalCloneCount() > a.maxlocal)
1090         {
1091                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (local)");
1092                 ServerInstance->WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a.maxlocal, this->GetIPString());
1093                 return;
1094         }
1095         else if (this->GlobalCloneCount() > a.maxglobal)
1096         {
1097                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (global)");
1098                 ServerInstance->WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a.maxglobal, this->GetIPString());
1099                 return;
1100         }
1101
1102         ELine* e = ServerInstance->XLines->matches_exception(this);
1103
1104         if (!e)
1105         {
1106                 GLine* r = ServerInstance->XLines->matches_gline(this);
1107
1108                 if (r)
1109                 {
1110                         char reason[MAXBUF];
1111                         snprintf(reason,MAXBUF,"G-Lined: %s",r->reason);
1112                         Goners->AddItem(this, reason);
1113                         return;
1114                 }
1115
1116                 KLine* n = ServerInstance->XLines->matches_kline(this);
1117
1118                 if (n)
1119                 {
1120                         char reason[MAXBUF];
1121                         snprintf(reason,MAXBUF,"K-Lined: %s",n->reason);
1122                         Goners->AddItem(this, reason);
1123                         return;
1124                 }
1125         }
1126
1127
1128         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
1129         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
1130         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
1131         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
1132         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());
1133
1134         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
1135         // so i'd better split it :)
1136         std::stringstream out(ServerInstance->Config->data005);
1137         std::string token = "";
1138         std::string line5 = "";
1139         int token_counter = 0;
1140
1141         while (!out.eof())
1142         {
1143                 out >> token;
1144                 line5 = line5 + token + " ";
1145                 token_counter++;
1146
1147                 if ((token_counter >= 13) || (out.eof() == true))
1148                 {
1149                         this->WriteServ("005 %s %s:are supported by this server", this->nick, line5.c_str());
1150                         line5 = "";
1151                         token_counter = 0;
1152                 }
1153         }
1154
1155         this->ShowMOTD();
1156
1157         /*
1158          * fix 3 by brain, move registered = 7 below these so that spurious modes and host
1159          * changes dont go out onto the network and produce 'fake direction'.
1160          */
1161         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
1162
1163         this->registered = REG_ALL;
1164
1165         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
1166
1167         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString());
1168 }
1169
1170 /** userrec::UpdateNick()
1171  * re-allocates a nick in the user_hash after they change nicknames,
1172  * returns a pointer to the new user as it may have moved
1173  */
1174 userrec* userrec::UpdateNickHash(const char* New)
1175 {
1176         try
1177         {
1178                 //user_hash::iterator newnick;
1179                 user_hash::iterator oldnick = ServerInstance->clientlist.find(this->nick);
1180
1181                 if (!strcasecmp(this->nick,New))
1182                         return oldnick->second;
1183
1184                 if (oldnick == ServerInstance->clientlist.end())
1185                         return NULL; /* doesnt exist */
1186
1187                 userrec* olduser = oldnick->second;
1188                 ServerInstance->clientlist[New] = olduser;
1189                 ServerInstance->clientlist.erase(oldnick);
1190                 return ServerInstance->clientlist[New];
1191         }
1192
1193         catch (...)
1194         {
1195                 ServerInstance->Log(DEBUG,"Exception in userrec::UpdateNickHash()");
1196                 return NULL;
1197         }
1198 }
1199
1200 bool userrec::ForceNickChange(const char* newnick)
1201 {
1202         try
1203         {
1204                 int MOD_RESULT = 0;
1205
1206                 FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1207
1208                 if (MOD_RESULT)
1209                 {
1210                         ServerInstance->stats->statsCollisions++;
1211                         return false;
1212                 }
1213
1214                 if (ServerInstance->XLines->matches_qline(newnick))
1215                 {
1216                         ServerInstance->stats->statsCollisions++;
1217                         return false;
1218                 }
1219
1220                 if (this->registered == REG_ALL)
1221                 {
1222                         const char* pars[1];
1223                         pars[0] = newnick;
1224                         std::string cmd = "NICK";
1225                         return (ServerInstance->Parser->CallHandler(cmd, pars, 1, this) == CMD_SUCCESS);
1226                 }
1227                 return false;
1228         }
1229
1230         catch (...)
1231         {
1232                 ServerInstance->Log(DEBUG,"Exception in userrec::ForceNickChange()");
1233                 return false;
1234         }
1235 }
1236
1237 void userrec::SetSockAddr(int protocol_family, const char* ip, int port)
1238 {
1239         switch (protocol_family)
1240         {
1241 #ifdef SUPPORT_IP6LINKS
1242                 case AF_INET6:
1243                 {
1244                         ServerInstance->Log(DEBUG,"Set inet6 protocol address");
1245                         sockaddr_in6* sin = new sockaddr_in6;
1246                         sin->sin6_family = AF_INET6;
1247                         sin->sin6_port = port;
1248                         inet_pton(AF_INET6, ip, &sin->sin6_addr);
1249                         this->ip = (sockaddr*)sin;
1250                 }
1251                 break;
1252 #endif
1253                 case AF_INET:
1254                 {
1255                         ServerInstance->Log(DEBUG,"Set inet4 protocol address");
1256                         sockaddr_in* sin = new sockaddr_in;
1257                         sin->sin_family = AF_INET;
1258                         sin->sin_port = port;
1259                         inet_pton(AF_INET, ip, &sin->sin_addr);
1260                         this->ip = (sockaddr*)sin;
1261                 }
1262                 break;
1263                 default:
1264                         ServerInstance->Log(DEBUG,"Ut oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1265                 break;
1266         }
1267 }
1268
1269 int userrec::GetPort()
1270 {
1271         if (this->ip == NULL)
1272                 return 0;
1273
1274         switch (this->GetProtocolFamily())
1275         {
1276 #ifdef SUPPORT_IP6LINKS
1277                 case AF_INET6:
1278                 {
1279                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1280                         return sin->sin6_port;
1281                 }
1282                 break;
1283 #endif
1284                 case AF_INET:
1285                 {
1286                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1287                         return sin->sin_port;
1288                 }
1289                 break;
1290                 default:
1291                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1292                 break;
1293         }
1294         return 0;
1295 }
1296
1297 int userrec::GetProtocolFamily()
1298 {
1299         if (this->ip == NULL)
1300                 return 0;
1301
1302         sockaddr_in* sin = (sockaddr_in*)this->ip;
1303         return sin->sin_family;
1304 }
1305
1306 const char* userrec::GetIPString()
1307 {
1308         static char buf[1024];
1309
1310         if (this->ip == NULL)
1311                 return "";
1312
1313         switch (this->GetProtocolFamily())
1314         {
1315 #ifdef SUPPORT_IP6LINKS
1316                 case AF_INET6:
1317                 {
1318                         static char temp[1024];
1319
1320                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1321                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1322                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1323                         if (*buf == ':')
1324                         {
1325                                 strlcpy(&temp[1], buf, sizeof(temp));
1326                                 *temp = '0';
1327                                 return temp;
1328                         }
1329                         return buf;
1330                 }
1331                 break;
1332 #endif
1333                 case AF_INET:
1334                 {
1335                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1336                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1337                         return buf;
1338                 }
1339                 break;
1340                 default:
1341                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1342                 break;
1343         }
1344         return "";
1345 }
1346
1347 const char* userrec::GetIPString(char* buf)
1348 {
1349         if (this->ip == NULL)
1350         {
1351                 *buf = 0;
1352                 return buf;
1353         }
1354
1355         switch (this->GetProtocolFamily())
1356         {
1357 #ifdef SUPPORT_IP6LINKS
1358                 case AF_INET6:
1359                 {
1360                         static char temp[1024];
1361
1362                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1363                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1364                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1365                         if (*buf == ':')
1366                         {
1367                                 strlcpy(&temp[1], buf, sizeof(temp));
1368                                 *temp = '0';
1369                                 strlcpy(buf, temp, sizeof(temp));
1370                         }
1371                         return buf;
1372                 }
1373                 break;
1374 #endif
1375                 case AF_INET:
1376                 {
1377                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1378                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1379                         return buf;
1380                 }
1381                 break;
1382
1383                 default:
1384                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1385                 break;
1386         }
1387         return "";
1388 }
1389
1390 /** NOTE: We cannot pass a const reference to this method.
1391  * The string is changed by the workings of the method,
1392  * so that if we pass const ref, we end up copying it to
1393  * something we can change anyway. Makes sense to just let
1394  * the compiler do that copy for us.
1395  */
1396 void userrec::Write(std::string text)
1397 {
1398         if ((this->fd < 0) || (this->fd > MAX_DESCRIPTORS))
1399                 return;
1400
1401         try
1402         {
1403                 text.append("\r\n");
1404         }
1405         catch (...)
1406         {
1407                 ServerInstance->Log(DEBUG,"Exception in userrec::Write() std::string::append");
1408                 return;
1409         }
1410
1411         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1412         {
1413                 try
1414                 {
1415                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length());
1416                 }
1417                 catch (ModuleException& modexcept)
1418                 {
1419                         ServerInstance->Log(DEBUG,"Module exception caught: %s",modexcept.GetReason());
1420                 }
1421         }
1422         else
1423         {
1424                 this->AddWriteBuf(text);
1425         }
1426         ServerInstance->stats->statsSent += text.length();
1427 }
1428
1429 /** Write()
1430  */
1431 void userrec::Write(const char *text, ...)
1432 {
1433         va_list argsPtr;
1434         char textbuffer[MAXBUF];
1435
1436         va_start(argsPtr, text);
1437         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1438         va_end(argsPtr);
1439
1440         this->Write(std::string(textbuffer));
1441 }
1442
1443 void userrec::WriteServ(const std::string& text)
1444 {
1445         char textbuffer[MAXBUF];
1446
1447         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1448         this->Write(std::string(textbuffer));
1449 }
1450
1451 /** WriteServ()
1452  *  Same as Write(), except `text' is prefixed with `:server.name '.
1453  */
1454 void userrec::WriteServ(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->WriteServ(std::string(textbuffer));
1464 }
1465
1466
1467 void userrec::WriteFrom(userrec *user, const std::string &text)
1468 {
1469         char tb[MAXBUF];
1470
1471         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1472
1473         this->Write(std::string(tb));
1474 }
1475
1476
1477 /* write text from an originating user to originating user */
1478
1479 void userrec::WriteFrom(userrec *user, const char* text, ...)
1480 {
1481         va_list argsPtr;
1482         char textbuffer[MAXBUF];
1483
1484         va_start(argsPtr, text);
1485         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1486         va_end(argsPtr);
1487
1488         this->WriteFrom(user, std::string(textbuffer));
1489 }
1490
1491
1492 /* write text to an destination user from a source user (e.g. user privmsg) */
1493
1494 void userrec::WriteTo(userrec *dest, const char *data, ...)
1495 {
1496         char textbuffer[MAXBUF];
1497         va_list argsPtr;
1498
1499         va_start(argsPtr, data);
1500         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1501         va_end(argsPtr);
1502
1503         this->WriteTo(dest, std::string(textbuffer));
1504 }
1505
1506 void userrec::WriteTo(userrec *dest, const std::string &data)
1507 {
1508         dest->WriteFrom(this, data);
1509 }
1510
1511
1512 void userrec::WriteCommon(const char* text, ...)
1513 {
1514         char textbuffer[MAXBUF];
1515         va_list argsPtr;
1516
1517         if (this->registered != REG_ALL)
1518                 return;
1519
1520         va_start(argsPtr, text);
1521         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1522         va_end(argsPtr);
1523
1524         this->WriteCommon(std::string(textbuffer));
1525 }
1526
1527 void userrec::WriteCommon(const std::string &text)
1528 {
1529         try
1530         {
1531                 bool sent_to_at_least_one = false;
1532
1533                 if (this->registered != REG_ALL)
1534                         return;
1535
1536                 uniq_id++;
1537
1538                 for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1539                 {
1540                         ucrec *n = *v;
1541                         if (n->channel)
1542                         {
1543                                 CUList *ulist= n->channel->GetUsers();
1544
1545                                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1546                                 {
1547                                         if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1548                                         {
1549                                                 already_sent[i->second->fd] = uniq_id;
1550                                                 i->second->WriteFrom(this, std::string(text));
1551                                                 sent_to_at_least_one = true;
1552                                         }
1553                                 }
1554                         }
1555                 }
1556
1557                 /*
1558                  * if the user was not in any channels, no users will receive the text. Make sure the user
1559                  * receives their OWN message for WriteCommon
1560                  */
1561                 if (!sent_to_at_least_one)
1562                 {
1563                         this->WriteFrom(this,std::string(text));
1564                 }
1565         }
1566
1567         catch (...)
1568         {
1569                 ServerInstance->Log(DEBUG,"Exception in userrec::WriteCommon()");
1570         }
1571 }
1572
1573
1574 /* write a formatted string to all users who share at least one common
1575  * channel, NOT including the source user e.g. for use in QUIT
1576  */
1577
1578 void userrec::WriteCommonExcept(const char* text, ...)
1579 {
1580         char textbuffer[MAXBUF];
1581         va_list argsPtr;
1582
1583         va_start(argsPtr, text);
1584         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1585         va_end(argsPtr);
1586
1587         this->WriteCommonExcept(std::string(textbuffer));
1588 }
1589
1590 void userrec::WriteCommonExcept(const std::string &text)
1591 {
1592         bool quit_munge = false;
1593         char oper_quit[MAXBUF];
1594         char textbuffer[MAXBUF];
1595
1596         strlcpy(textbuffer, text.c_str(), MAXBUF);
1597
1598         if (this->registered != REG_ALL)
1599                 return;
1600
1601         uniq_id++;
1602
1603         /* TODO: We need some form of WriteCommonExcept that will send two lines, one line to
1604          * opers and the other line to non-opers, then all this hidebans and hidesplits gunk
1605          * can go byebye.
1606          */
1607         if (ServerInstance->Config->HideSplits)
1608         {
1609                 char* check = textbuffer + 6;
1610
1611                 if (!strncasecmp(textbuffer, "QUIT :",6))
1612                 {
1613                         std::stringstream split(check);
1614                         std::string server_one;
1615                         std::string server_two;
1616
1617                         split >> server_one;
1618                         split >> server_two;
1619
1620                         if ((ServerInstance->FindServerName(server_one)) && (ServerInstance->FindServerName(server_two)))
1621                         {
1622                                 strlcpy(oper_quit,textbuffer,MAXQUIT);
1623                                 strlcpy(check,"*.net *.split",MAXQUIT);
1624                                 quit_munge = true;
1625                         }
1626                 }
1627         }
1628
1629         if ((ServerInstance->Config->HideBans) && (!quit_munge))
1630         {
1631                 if ((!strncasecmp(textbuffer, "QUIT :G-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :K-Lined:",14))
1632                 || (!strncasecmp(textbuffer, "QUIT :Q-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :Z-Lined:",14)))
1633                 {
1634                         char* check = textbuffer + 13;
1635                         strlcpy(oper_quit,textbuffer,MAXQUIT);
1636                         *check = 0;  // We don't need to strlcpy, we just chop it from the :
1637                         quit_munge = true;
1638                 }
1639         }
1640
1641         for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1642         {
1643                 ucrec* n = *v;
1644                 if (n->channel)
1645                 {
1646                         CUList *ulist= n->channel->GetUsers();
1647
1648                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1649                         {
1650                                 if (this != i->second)
1651                                 {
1652                                         if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1653                                         {
1654                                                 already_sent[i->second->fd] = uniq_id;
1655                                                 if (quit_munge)
1656                                                         i->second->WriteFrom(this, *i->second->oper ? std::string(oper_quit) : std::string(textbuffer));
1657                                                 else
1658                                                         i->second->WriteFrom(this, std::string(textbuffer));
1659                                         }
1660                                 }
1661                         }
1662                 }
1663         }
1664
1665 }
1666
1667 void userrec::WriteWallOps(const std::string &text)
1668 {
1669         /* Does nothing if theyre not opered */
1670         if ((!*this->oper) && (IS_LOCAL(this)))
1671                 return;
1672
1673         std::string wallop = "WALLOPS :";
1674
1675         try
1676         {
1677                 wallop.append(text);
1678         }
1679         catch (...)
1680         {
1681                 ServerInstance->Log(DEBUG,"Exception in userrec::Write() std::string::append");
1682                 return;
1683         }
1684
1685         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1686         {
1687                 userrec* t = *i;
1688                 if ((IS_LOCAL(t)) && (t->modes[UM_WALLOPS]))
1689                         this->WriteTo(t,wallop);
1690         }
1691 }
1692
1693 void userrec::WriteWallOps(const char* text, ...)
1694 {
1695         char textbuffer[MAXBUF];
1696         va_list argsPtr;
1697
1698         va_start(argsPtr, text);
1699         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1700         va_end(argsPtr);
1701
1702         this->WriteWallOps(std::string(textbuffer));
1703 }
1704
1705 /* return 0 or 1 depending if users u and u2 share one or more common channels
1706  * (used by QUIT, NICK etc which arent channel specific notices)
1707  *
1708  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1709  * the first users channels then the second users channels within the outer loop,
1710  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1711  * all possible iterations). However this new function instead checks against the
1712  * channel's userlist in the inner loop which is a std::map<userrec*,userrec*>
1713  * and saves us time as we already know what pointer value we are after.
1714  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1715  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1716  */
1717 bool userrec::SharesChannelWith(userrec *other)
1718 {
1719         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1720                 return false;
1721
1722         /* Outer loop */
1723         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1724         {
1725                 /* Fetch the channel from the user */
1726                 ucrec* user_channel = *i;
1727
1728                 if (user_channel->channel)
1729                 {
1730                         /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1731                          * by replacing it with a map::find which *should* be more efficient
1732                          */
1733                         if (user_channel->channel->HasUser(other))
1734                                 return true;
1735                 }
1736         }
1737         return false;
1738 }
1739
1740 int userrec::CountChannels()
1741 {
1742         return ChannelCount;
1743 }
1744
1745 void userrec::ModChannelCount(int n)
1746 {
1747         ChannelCount += n;
1748 }
1749
1750 bool userrec::ChangeName(const char* gecos)
1751 {
1752         if (!strcmp(gecos, this->fullname))
1753                 return true;
1754
1755         if (IS_LOCAL(this))
1756         {
1757                 int MOD_RESULT = 0;
1758                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1759                 if (MOD_RESULT)
1760                         return false;
1761                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1762         }
1763         strlcpy(this->fullname,gecos,MAXGECOS+1);
1764         return true;
1765 }
1766
1767 bool userrec::ChangeDisplayedHost(const char* host)
1768 {
1769         if (!strcmp(host, this->dhost))
1770                 return true;
1771
1772         if (IS_LOCAL(this))
1773         {
1774                 int MOD_RESULT = 0;
1775                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host));
1776                 if (MOD_RESULT)
1777                         return false;
1778                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host));
1779         }
1780         if (this->ServerInstance->Config->CycleHosts)
1781                 this->WriteCommonExcept("%s","QUIT :Changing hosts");
1782
1783         strlcpy(this->dhost,host,63);
1784
1785         if (this->ServerInstance->Config->CycleHosts)
1786         {
1787                 for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1788                 {
1789                         if ((*i)->channel)
1790                         {
1791                                 (*i)->channel->WriteAllExceptSender(this, false, 0, "JOIN %s", (*i)->channel->name);
1792                                 std::string n = this->ServerInstance->Modes->ModeString(this, (*i)->channel);
1793                                 if (n.length() > 0)
1794                                         (*i)->channel->WriteAllExceptSender(this, true, 0, "MODE %s +%s", (*i)->channel->name, n.c_str());
1795                         }
1796                 }
1797         }
1798
1799         if (IS_LOCAL(this))
1800                 this->WriteServ("396 %s %s :is now your hidden host",this->nick,this->dhost);
1801
1802         return true;
1803 }
1804
1805 bool userrec::ChangeIdent(const char* newident)
1806 {
1807         if (!strcmp(newident, this->ident))
1808                 return true;
1809
1810         if (this->ServerInstance->Config->CycleHosts)
1811                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1812
1813         strlcpy(this->ident, newident, IDENTMAX+2);
1814
1815         if (this->ServerInstance->Config->CycleHosts)
1816         {
1817                 for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1818                 {
1819                         if ((*i)->channel)
1820                         {
1821                                 (*i)->channel->WriteAllExceptSender(this, false, 0, "JOIN %s", (*i)->channel->name);
1822                                 std::string n = this->ServerInstance->Modes->ModeString(this, (*i)->channel);
1823                                 if (n.length() > 0)
1824                                         (*i)->channel->WriteAllExceptSender(this, true, 0, "MODE %s +%s", (*i)->channel->name, n.c_str());
1825                         }
1826                 }
1827         }
1828
1829         return true;
1830 }
1831
1832 void userrec::NoticeAll(char* text, ...)
1833 {
1834         char textbuffer[MAXBUF];
1835         char formatbuffer[MAXBUF];
1836         va_list argsPtr;
1837
1838         va_start(argsPtr, text);
1839         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1840         va_end(argsPtr);
1841
1842         snprintf(formatbuffer,MAXBUF,"NOTICE $* :%s",textbuffer);
1843
1844         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1845         {
1846                 userrec* t = *i;
1847                 t->WriteFrom(this, std::string(formatbuffer));
1848         }
1849 }
1850
1851
1852 std::string userrec::ChannelList(userrec* source)
1853 {
1854         try
1855         {
1856                 std::string list;
1857                 for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1858                 {
1859                         ucrec* rec = *i;
1860
1861                         if(rec->channel && rec->channel->name)
1862                         {
1863                                 /* If the target is the same as the sender, let them see all their channels.
1864                                  * If the channel is NOT private/secret OR the user shares a common channel
1865                                  * If the user is an oper, and the <options:operspywhois> option is set.
1866                                  */
1867                                 if ((source == this) || (*source->oper && ServerInstance->Config->OperSpyWhois) || (((!rec->channel->modes[CM_PRIVATE]) && (!rec->channel->modes[CM_SECRET])) || (rec->channel->HasUser(source))))
1868                                 {
1869                                         list.append(rec->channel->GetPrefixChar(this)).append(rec->channel->name).append(" ");
1870                                 }
1871                         }
1872                 }
1873                 return list;
1874         }
1875         catch (...)
1876         {
1877                 ServerInstance->Log(DEBUG,"Exception in userrec::ChannelList()");
1878                 return "";
1879         }
1880 }
1881
1882 void userrec::SplitChanList(userrec* dest, const std::string &cl)
1883 {
1884         std::string line;
1885         std::ostringstream prefix;
1886         std::string::size_type start, pos, length;
1887
1888         try
1889         {
1890                 prefix << ":" << ServerInstance->Config->ServerName << " 319 " << this->nick << " " << dest->nick << " :";
1891                 line = prefix.str();
1892
1893                 for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1894                 {
1895                         length = (pos == std::string::npos) ? cl.length() : pos;
1896
1897                         if (line.length() + length - start > 510)
1898                         {
1899                                 this->Write(line);
1900                                 line = prefix.str();
1901                         }
1902
1903                         if(pos == std::string::npos)
1904                         {
1905                                 line.append(cl.substr(start, length - start));
1906                                 break;
1907                         }
1908                         else
1909                         {
1910                                 line.append(cl.substr(start, length - start + 1));
1911                         }
1912                 }
1913
1914                 if (line.length())
1915                 {
1916                         this->Write(line);
1917                 }
1918         }
1919
1920         catch (...)
1921         {
1922                 ServerInstance->Log(DEBUG,"Exception in userrec::SplitChanList()");
1923         }
1924 }
1925
1926
1927 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1928  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1929  * then their ip will be taken as 'priority' anyway, so for example,
1930  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1931  */
1932 ConnectClass& userrec::GetClass()
1933 {
1934         for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1935         {
1936                 if ((match(this->GetIPString(),i->host.c_str(),true)) || (match(this->host,i->host.c_str())))
1937                         return *i;
1938         }
1939
1940         return *(ServerInstance->Config->Classes.begin());
1941 }
1942
1943 void userrec::PurgeEmptyChannels()
1944 {
1945         std::vector<chanrec*> to_delete;
1946
1947         // firstly decrement the count on each channel
1948         for (std::vector<ucrec*>::iterator f = this->chans.begin(); f != this->chans.end(); f++)
1949         {
1950                 ucrec* uc = *f;
1951                 if (uc->channel)
1952                 {
1953                         uc->channel->RemoveAllPrefixes(this);
1954                         if (uc->channel->DelUser(this) == 0)
1955                         {
1956                                 /* No users left in here, mark it for deletion */
1957                                 try
1958                                 {
1959                                         to_delete.push_back(uc->channel);
1960                                 }
1961                                 catch (...)
1962                                 {
1963                                         ServerInstance->Log(DEBUG,"Exception in userrec::PurgeEmptyChannels to_delete.push_back()");
1964                                 }
1965                                 uc->channel = NULL;
1966                         }
1967                 }
1968         }
1969
1970         for (std::vector<chanrec*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1971         {
1972                 chanrec* thischan = *n;
1973                 chan_hash::iterator i2 = ServerInstance->chanlist.find(thischan->name);
1974                 if (i2 != ServerInstance->chanlist.end())
1975                 {
1976                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1977                         DELETE(i2->second);
1978                         ServerInstance->chanlist.erase(i2);
1979                 }
1980         }
1981
1982         this->UnOper();
1983 }
1984
1985 void userrec::ShowMOTD()
1986 {
1987         if (!ServerInstance->Config->MOTD.size())
1988         {
1989                 this->WriteServ("422 %s :Message of the day file is missing.",this->nick);
1990                 return;
1991         }
1992         this->WriteServ("375 %s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1993
1994         for (unsigned int i = 0; i < ServerInstance->Config->MOTD.size(); i++)
1995                 this->WriteServ("372 %s :- %s",this->nick,ServerInstance->Config->MOTD[i].c_str());
1996
1997         this->WriteServ("376 %s :End of message of the day.", this->nick);
1998 }
1999
2000 void userrec::ShowRULES()
2001 {
2002         if (!ServerInstance->Config->RULES.size())
2003         {
2004                 this->WriteServ("NOTICE %s :Rules file is missing.",this->nick);
2005                 return;
2006         }
2007         this->WriteServ("NOTICE %s :%s rules",this->nick,ServerInstance->Config->ServerName);
2008
2009         for (unsigned int i = 0; i < ServerInstance->Config->RULES.size(); i++)
2010                 this->WriteServ("NOTICE %s :%s",this->nick,ServerInstance->Config->RULES[i].c_str());
2011
2012         this->WriteServ("NOTICE %s :End of %s rules.",this->nick,ServerInstance->Config->ServerName);
2013 }
2014
2015 void userrec::HandleEvent(EventType et)
2016 {
2017         /* WARNING: May delete this user! */
2018         try
2019         {
2020                 ServerInstance->ProcessUser(this);
2021         }
2022         catch (...)
2023         {
2024                 ServerInstance->Log(DEBUG,"Exception in userrec::HandleEvent intercepted");
2025         }
2026 }
2027