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 irc::whowas::whowas_users whowas;
  28 static unsigned long already_sent[MAX_DESCRIPTORS] = {0};
  29
  30 typedef std::map<irc::string,char*> opertype_t;
  31 typedef opertype_t operclass_t;
  32
  33 opertype_t opertypes;
  34 operclass_t operclass;
  35
  36 /* XXX: Used for speeding up WriteCommon operations */
  37 unsigned long uniq_id = 0;
  38
  39 bool InitTypes(ServerConfig* conf, const char* tag)
  40 {
  41         for (opertype_t::iterator n = opertypes.begin(); n != opertypes.end(); n++)
  42         {
  43                 if (n->second)
  44                         delete[] n->second;
  45         }
  46
  47         opertypes.clear();
  48         return true;
  49 }
  50
  51 bool InitClasses(ServerConfig* conf, const char* tag)
  52 {
  53         for (operclass_t::iterator n = operclass.begin(); n != operclass.end(); n++)
  54         {
  55                 if (n->second)
  56                         delete[] n->second;
  57         }
  58
  59         operclass.clear();
  60         return true;
  61 }
  62
  63 bool DoType(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
  64 {
  65         char* TypeName = (char*)values[0];
  66         char* Classes = (char*)values[1];
  67
  68         opertypes[TypeName] = strdup(Classes);
  69         conf->GetInstance()->Log(DEBUG,"Read oper TYPE '%s' with classes '%s'",TypeName,Classes);
  70         return true;
  71 }
  72
  73 bool DoClass(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
  74 {
  75         char* ClassName = (char*)values[0];
  76         char* CommandList = (char*)values[1];
  77
  78         operclass[ClassName] = strdup(CommandList);
  79         conf->GetInstance()->Log(DEBUG,"Read oper CLASS '%s' with commands '%s'",ClassName,CommandList);
  80         return true;
  81 }
  82
  83 bool DoneClassesAndTypes(ServerConfig* conf, const char* tag)
  84 {
  85         return true;
  86 }
  87
  88 std::string userrec::ProcessNoticeMasks(const char *sm)
  89 {
  90         bool adding = true, oldadding = false;
  91         const char *c = sm;
  92         std::string output;
  93
  94         ServerInstance->Log(DEBUG,"Process notice masks");
  95
  96         while (c && *c)
  97         {
  98                 ServerInstance->Log(DEBUG,"Process notice mask %c",*c);
  99
 100                 switch (*c)
 101                 {
 102                         case '+':
 103                                 adding = true;
 104                         break;
 105                         case '-':
 106                                 adding = false;
 107                         break;
 108                         default:
 109                                 if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c)))
 110                                 {
 111                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
 112                                         {
 113                                                 if ((oldadding != adding) || (!output.length()))
 114                                                         output += (adding ? '+' : '-');
 115
 116                                                 this->SetNoticeMask(*c, adding);
 117
 118                                                 output += *c;
 119                                         }
 120                                 }
 121                                 oldadding = adding;
 122                         break;
 123                 }
 124
 125                 *c++;
 126         }
 127
 128         return output;
 129 }
 130
 131 void userrec::StartDNSLookup()
 132 {
 133         ServerInstance->Log(DEBUG,"Commencing reverse lookup");
 134         try
 135         {
 136                 ServerInstance->Log(DEBUG,"Passing instance: %08x",this->ServerInstance);
 137                 res_reverse = new UserResolver(this->ServerInstance, this, this->GetIPString(), false);
 138                 this->ServerInstance->AddResolver(res_reverse);
 139         }
 140         catch (ModuleException& e)
 141         {
 142                 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
 143         }
 144 }
 145
 146 UserResolver::UserResolver(InspIRCd* Instance, userrec* user, std::string to_resolve, bool forward) :
 147         Resolver(Instance, to_resolve, forward ? DNS_QUERY_FORWARD : DNS_QUERY_REVERSE), bound_user(user)
 148 {
 149         this->fwd = forward;
 150         this->bound_fd = user->GetFd();
 151 }
 152
 153 void UserResolver::OnLookupComplete(const std::string &result)
 154 {
 155         if ((!this->fwd) && (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user))
 156         {
 157                 ServerInstance->Log(DEBUG,"Commencing forward lookup");
 158                 this->bound_user->stored_host = result;
 159                 try
 160                 {
 161                         /* Check we didnt time out */
 162                         if (this->bound_user->registered != REG_ALL)
 163                         {
 164                                 bound_user->res_forward = new UserResolver(this->ServerInstance, this->bound_user, result, true);
 165                                 this->ServerInstance->AddResolver(bound_user->res_forward);
 166                         }
 167                 }
 168                 catch (ModuleException& e)
 169                 {
 170                         ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
 171                 }
 172         }
 173         else if ((this->fwd) && (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user))
 174         {
 175                 /* Both lookups completed */
 176                 if (this->bound_user->GetIPString() == result)
 177                 {
 178                         std::string hostname = this->bound_user->stored_host;
 179                         if (hostname.length() < 65)
 180                         {
 181                                 /* Check we didnt time out */
 182                                 if (this->bound_user->registered != REG_ALL)
 183                                 {
 184                                         /* Hostnames starting with : are not a good thing (tm) */
 185                                         if (*(hostname.c_str()) == ':')
 186                                                 hostname = "0" + hostname;
 187
 188                                         this->bound_user->WriteServ("NOTICE Auth :*** Found your hostname (%s)", hostname.c_str());
 189                                         this->bound_user->dns_done = true;
 190                                         strlcpy(this->bound_user->dhost, hostname.c_str(),64);
 191                                         strlcpy(this->bound_user->host, hostname.c_str(),64);
 192                                 }
 193                         }
 194                         else
 195                         {
 196                                 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());
 197                         }
 198                 }
 199                 else
 200                 {
 201                         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());
 202                 }
 203         }
 204 }
 205
 206 void UserResolver::OnError(ResolverError e, const std::string &errormessage)
 207 {
 208         if (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user)
 209         {
 210                 /* Error message here */
 211                 this->bound_user->WriteServ("NOTICE Auth :*** Could not resolve your hostname, using your IP address (%s) instead.", this->bound_user->GetIPString());
 212                 this->bound_user->dns_done = true;
 213         }
 214 }
 215
 216
 217 bool userrec::IsNoticeMaskSet(unsigned char sm)
 218 {
 219         return (snomasks[sm-65]);
 220 }
 221
 222 void userrec::SetNoticeMask(unsigned char sm, bool value)
 223 {
 224         snomasks[sm-65] = value;
 225 }
 226
 227 const char* userrec::FormatNoticeMasks()
 228 {
 229         static char data[MAXBUF];
 230         int offset = 0;
 231
 232         for (int n = 0; n < 64; n++)
 233         {
 234                 if (snomasks[n])
 235                         data[offset++] = n+65;
 236         }
 237
 238         data[offset] = 0;
 239         return data;
 240 }
 241
 242
 243
 244 bool userrec::IsModeSet(unsigned char m)
 245 {
 246         return (modes[m-65]);
 247 }
 248
 249 void userrec::SetMode(unsigned char m, bool value)
 250 {
 251         modes[m-65] = value;
 252 }
 253
 254 const char* userrec::FormatModes()
 255 {
 256         static char data[MAXBUF];
 257         int offset = 0;
 258         for (int n = 0; n < 64; n++)
 259         {
 260                 if (modes[n])
 261                         data[offset++] = n+65;
 262         }
 263         data[offset] = 0;
 264         return data;
 265 }
 266
 267 userrec::userrec(InspIRCd* Instance) : ServerInstance(Instance)
 268 {
 269         ServerInstance->Log(DEBUG,"userrec::userrec(): Instance: %08x",ServerInstance);
 270         // the PROPER way to do it, AVOID bzero at *ALL* costs
 271         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = 0;
 272         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 273         reset_due = ServerInstance->Time();
 274         lines_in = lastping = signon = idle_lastmsg = nping = registered = 0;
 275         ChannelCount = timeout = flood = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 276         haspassed = dns_done = false;
 277         fd = -1;
 278         recvq = "";
 279         sendq = "";
 280         WriteError = "";
 281         res_forward = res_reverse = NULL;
 282         ip = NULL;
 283         chans.clear();
 284         invites.clear();
 285         chans.resize(MAXCHANS);
 286         memset(modes,0,sizeof(modes));
 287         memset(snomasks,0,sizeof(snomasks));
 288
 289         for (unsigned int n = 0; n < MAXCHANS; n++)
 290         {
 291                 ucrec* x = new ucrec();
 292                 chans[n] = x;
 293                 x->channel = NULL;
 294                 x->uc_modes = 0;
 295         }
 296 }
 297
 298 userrec::~userrec()
 299 {
 300         for (std::vector<ucrec*>::iterator n = chans.begin(); n != chans.end(); n++)
 301         {
 302                 ucrec* x = (ucrec*)*n;
 303                 delete x;
 304         }
 305
 306         if (ip)
 307         {
 308                 if (this->GetProtocolFamily() == AF_INET)
 309                 {
 310                         delete (sockaddr_in*)ip;
 311                 }
 312 #ifdef SUPPORT_IP6LINKS
 313                 else
 314                 {
 315                         delete (sockaddr_in6*)ip;
 316                 }
 317 #endif
 318         }
 319 }
 320
 321 /* XXX - minor point, other *Host functions return a char *, this one creates it. Might be nice to be consistant? */
 322 void userrec::MakeHost(char* nhost)
 323 {
 324         /* This is much faster than snprintf */
 325         char* t = nhost;
 326         for(char* n = ident; *n; n++)
 327                 *t++ = *n;
 328         *t++ = '@';
 329         for(char* n = host; *n; n++)
 330                 *t++ = *n;
 331         *t = 0;
 332 }
 333
 334 void userrec::CloseSocket()
 335 {
 336         shutdown(this->fd,2);
 337         close(this->fd);
 338 }
 339
 340 char* userrec::GetFullHost()
 341 {
 342         static char result[MAXBUF];
 343         char* t = result;
 344         for(char* n = nick; *n; n++)
 345                 *t++ = *n;
 346         *t++ = '!';
 347         for(char* n = ident; *n; n++)
 348                 *t++ = *n;
 349         *t++ = '@';
 350         for(char* n = dhost; *n; n++)
 351                 *t++ = *n;
 352         *t = 0;
 353         return result;
 354 }
 355
 356 char* userrec::MakeWildHost()
 357 {
 358         static char nresult[MAXBUF];
 359         char* t = nresult;
 360         *t++ = '*';     *t++ = '!';
 361         *t++ = '*';     *t++ = '@';
 362         for(char* n = dhost; *n; n++)
 363                 *t++ = *n;
 364         *t = 0;
 365         return nresult;
 366 }
 367
 368 int userrec::ReadData(void* buffer, size_t size)
 369 {
 370         if (IS_LOCAL(this))
 371         {
 372                 return read(this->fd, buffer, size);
 373         }
 374         else
 375                 return 0;
 376 }
 377
 378
 379 char* userrec::GetFullRealHost()
 380 {
 381         static char fresult[MAXBUF];
 382         char* t = fresult;
 383         for(char* n = nick; *n; n++)
 384                 *t++ = *n;
 385         *t++ = '!';
 386         for(char* n = ident; *n; n++)
 387                 *t++ = *n;
 388         *t++ = '@';
 389         for(char* n = host; *n; n++)
 390                 *t++ = *n;
 391         *t = 0;
 392         return fresult;
 393 }
 394
 395 bool userrec::IsInvited(irc::string &channel)
 396 {
 397         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 398         {
 399                 irc::string compare = i->channel;
 400
 401                 if (compare == channel)
 402                 {
 403                         return true;
 404                 }
 405         }
 406         return false;
 407 }
 408
 409 InvitedList* userrec::GetInviteList()
 410 {
 411         return &invites;
 412 }
 413
 414 void userrec::InviteTo(irc::string &channel)
 415 {
 416         Invited i;
 417         i.channel = channel;
 418         invites.push_back(i);
 419 }
 420
 421 void userrec::RemoveInvite(irc::string &channel)
 422 {
 423         ServerInstance->Log(DEBUG,"Removing invites");
 424
 425         if (invites.size())
 426         {
 427                 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 428                 {
 429                         irc::string compare = i->channel;
 430
 431                         if (compare == channel)
 432                         {
 433                                 invites.erase(i);
 434                                 return;
 435                         }
 436                 }
 437         }
 438 }
 439
 440 bool userrec::HasPermission(const std::string &command)
 441 {
 442         char* mycmd;
 443         char* savept;
 444         char* savept2;
 445
 446         /*
 447          * users on remote servers can completely bypass all permissions based checks.
 448          * This prevents desyncs when one server has different type/class tags to another.
 449          * That having been said, this does open things up to the possibility of source changes
 450          * allowing remote kills, etc - but if they have access to the src, they most likely have
 451          * access to the conf - so it's an end to a means either way.
 452          */
 453         if (!IS_LOCAL(this))
 454                 return true;
 455
 456         // are they even an oper at all?
 457         if (*this->oper)
 458         {
 459                 opertype_t::iterator iter_opertype = opertypes.find(this->oper);
 460                 if (iter_opertype != opertypes.end())
 461                 {
 462                         char* Classes = strdup(iter_opertype->second);
 463                         char* myclass = strtok_r(Classes," ",&savept);
 464                         while (myclass)
 465                         {
 466                                 operclass_t::iterator iter_operclass = operclass.find(myclass);
 467                                 if (iter_operclass != operclass.end())
 468                                 {
 469                                         char* CommandList = strdup(iter_operclass->second);
 470                                         mycmd = strtok_r(CommandList," ",&savept2);
 471                                         while (mycmd)
 472                                         {
 473                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 474                                                 {
 475                                                         free(Classes);
 476                                                         free(CommandList);
 477                                                         return true;
 478                                                 }
 479                                                 mycmd = strtok_r(NULL," ",&savept2);
 480                                         }
 481                                         free(CommandList);
 482                                 }
 483                                 myclass = strtok_r(NULL," ",&savept);
 484                         }
 485                         free(Classes);
 486                 }
 487         }
 488         return false;
 489 }
 490
 491 /** NOTE: We cannot pass a const reference to this method.
 492  * The string is changed by the workings of the method,
 493  * so that if we pass const ref, we end up copying it to
 494  * something we can change anyway. Makes sense to just let
 495  * the compiler do that copy for us.
 496  */
 497 bool userrec::AddBuffer(std::string a)
 498 {
 499         try
 500         {
 501                 std::string::size_type i = a.rfind('\r');
 502
 503                 while (i != std::string::npos)
 504                 {
 505                         a.erase(i, 1);
 506                         i = a.rfind('\r');
 507                 }
 508
 509                 if (a.length())
 510                         recvq.append(a);
 511
 512                 if (recvq.length() > (unsigned)this->recvqmax)
 513                 {
 514                         this->SetWriteError("RecvQ exceeded");
 515                         ServerInstance->WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 516                         return false;
 517                 }
 518
 519                 return true;
 520         }
 521
 522         catch (...)
 523         {
 524                 ServerInstance->Log(DEBUG,"Exception in userrec::AddBuffer()");
 525                 return false;
 526         }
 527 }
 528
 529 bool userrec::BufferIsReady()
 530 {
 531         return (recvq.find('\n') != std::string::npos);
 532 }
 533
 534 void userrec::ClearBuffer()
 535 {
 536         recvq = "";
 537 }
 538
 539 std::string userrec::GetBuffer()
 540 {
 541         try
 542         {
 543                 if (!recvq.length())
 544                         return "";
 545
 546                 /* Strip any leading \r or \n off the string.
 547                  * Usually there are only one or two of these,
 548                  * so its is computationally cheap to do.
 549                  */
 550                 while ((*recvq.begin() == '\r') || (*recvq.begin() == '\n'))
 551                         recvq.erase(recvq.begin());
 552
 553                 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 554                 {
 555                         /* Find the first complete line, return it as the
 556                          * result, and leave the recvq as whats left
 557                          */
 558                         if (*x == '\n')
 559                         {
 560                                 std::string ret = std::string(recvq.begin(), x);
 561                                 recvq.erase(recvq.begin(), x + 1);
 562                                 return ret;
 563                         }
 564                 }
 565                 return "";
 566         }
 567
 568         catch (...)
 569         {
 570                 ServerInstance->Log(DEBUG,"Exception in userrec::GetBuffer()");
 571                 return "";
 572         }
 573 }
 574
 575 void userrec::AddWriteBuf(const std::string &data)
 576 {
 577         if (*this->GetWriteError())
 578                 return;
 579
 580         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 581         {
 582                 /*
 583                  * Fix by brain - Set the error text BEFORE calling writeopers, because
 584                  * if we dont it'll recursively  call here over and over again trying
 585                  * to repeatedly add the text to the sendq!
 586                  */
 587                 this->SetWriteError("SendQ exceeded");
 588                 ServerInstance->WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 589                 return;
 590         }
 591
 592         try
 593         {
 594                 if (data.length() > 512)
 595                 {
 596                         std::string newdata(data);
 597                         newdata.resize(510);
 598                         newdata.append("\r\n");
 599                         sendq.append(newdata);
 600                 }
 601                 else
 602                 {
 603                         sendq.append(data);
 604                 }
 605         }
 606         catch (...)
 607         {
 608                 this->SetWriteError("SendQ exceeded");
 609                 ServerInstance->WriteOpers("*** User %s SendQ got an exception",this->nick);
 610         }
 611 }
 612
 613 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 614 void userrec::FlushWriteBuf()
 615 {
 616         try
 617         {
 618                 if (this->fd == FD_MAGIC_NUMBER)
 619                 {
 620                         sendq = "";
 621                 }
 622                 if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 623                 {
 624                         const char* tb = this->sendq.c_str();
 625                         int n_sent = write(this->fd,tb,this->sendq.length());
 626                         if (n_sent == -1)
 627                         {
 628                                 if (errno != EAGAIN)
 629                                         this->SetWriteError(strerror(errno));
 630                         }
 631                         else
 632                         {
 633                                 // advance the queue
 634                                 tb += n_sent;
 635                                 this->sendq = tb;
 636                                 // update the user's stats counters
 637                                 this->bytes_out += n_sent;
 638                                 this->cmds_out++;
 639                         }
 640                 }
 641         }
 642
 643         catch (...)
 644         {
 645                 ServerInstance->Log(DEBUG,"Exception in userrec::FlushWriteBuf()");
 646         }
 647 }
 648
 649 void userrec::SetWriteError(const std::string &error)
 650 {
 651         try
 652         {
 653                 ServerInstance->Log(DEBUG,"SetWriteError: %s",error.c_str());
 654                 // don't try to set the error twice, its already set take the first string.
 655                 if (!this->WriteError.length())
 656                 {
 657                         ServerInstance->Log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 658                         this->WriteError = error;
 659                 }
 660         }
 661
 662         catch (...)
 663         {
 664                 ServerInstance->Log(DEBUG,"Exception in userrec::SetWriteError()");
 665         }
 666 }
 667
 668 const char* userrec::GetWriteError()
 669 {
 670         return this->WriteError.c_str();
 671 }
 672
 673 void userrec::Oper(const std::string &opertype)
 674 {
 675         try
 676         {
 677                 this->modes[UM_OPERATOR] = 1;
 678                 this->WriteServ("MODE %s :+o", this->nick);
 679                 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 680                 ServerInstance->Log(DEFAULT,"OPER: %s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 681                 strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 682                 ServerInstance->all_opers.push_back(this);
 683                 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype));
 684         }
 685
 686         catch (...)
 687         {
 688                 ServerInstance->Log(DEBUG,"Exception in userrec::Oper()");
 689         }
 690 }
 691
 692 void userrec::UnOper()
 693 {
 694         try
 695         {
 696                 if (*this->oper)
 697                 {
 698                         *this->oper = 0;
 699                         this->modes[UM_OPERATOR] = 0;
 700                         for (std::vector<userrec*>::iterator a = ServerInstance->all_opers.begin(); a < ServerInstance->all_opers.end(); a++)
 701                         {
 702                                 if (*a == this)
 703                                 {
 704                                         ServerInstance->Log(DEBUG,"Oper removed from optimization list");
 705                                         ServerInstance->all_opers.erase(a);
 706                                         return;
 707                                 }
 708                         }
 709                 }
 710         }
 711
 712         catch (...)
 713         {
 714                 ServerInstance->Log(DEBUG,"Exception in userrec::UnOper()");
 715         }
 716 }
 717
 718 void userrec::QuitUser(InspIRCd* Instance, userrec *user, const std::string &quitreason)
 719 {
 720         user_hash::iterator iter = Instance->clientlist.find(user->nick);
 721         std::string reason = quitreason;
 722
 723         if (reason.length() > MAXQUIT - 1)
 724                 reason.resize(MAXQUIT - 1);
 725
 726         if (IS_LOCAL(user))
 727                 user->Write("ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason.c_str());
 728
 729         if (user->registered == REG_ALL)
 730         {
 731                 user->PurgeEmptyChannels();
 732                 FOREACH_MOD_I(Instance,I_OnUserQuit,OnUserQuit(user,reason));
 733                 user->WriteCommonExcept("QUIT :%s",reason.c_str());
 734         }
 735
 736         if (IS_LOCAL(user))
 737                 user->FlushWriteBuf();
 738
 739         FOREACH_MOD_I(Instance,I_OnUserDisconnect,OnUserDisconnect(user));
 740
 741         if (IS_LOCAL(user))
 742         {
 743                 if (Instance->Config->GetIOHook(user->GetPort()))
 744                 {
 745                         try
 746                         {
 747                                 Instance->Config->GetIOHook(user->GetPort())->OnRawSocketClose(user->fd);
 748                         }
 749                         catch (ModuleException& modexcept)
 750                         {
 751                                 Instance->Log(DEBUG,"Module exception cought: %s",modexcept.GetReason());
 752                         }
 753                 }
 754
 755                 Instance->SE->DelFd(user);
 756                 user->CloseSocket();
 757         }
 758
 759         /*
 760          * this must come before the ServerInstance->SNO->WriteToSnoMaskso that it doesnt try to fill their buffer with anything
 761          * if they were an oper with +sn +qQ.
 762          */
 763         if (user->registered == REG_ALL)
 764         {
 765                 if (IS_LOCAL(user))
 766                         Instance->SNO->WriteToSnoMask('q',"Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason.c_str());
 767                 else
 768                         Instance->SNO->WriteToSnoMask('Q',"Client exiting on server %s: %s!%s@%s [%s]",user->server,user->nick,user->ident,user->host,reason.c_str());
 769                 user->AddToWhoWas();
 770         }
 771
 772         if (iter != Instance->clientlist.end())
 773         {
 774                 Instance->Log(DEBUG,"deleting user hash value %lx",(unsigned long)user);
 775                 if (IS_LOCAL(user))
 776                 {
 777                         if (find(Instance->local_users.begin(),Instance->local_users.end(),user) != Instance->local_users.end())
 778                                 Instance->local_users.erase(find(Instance->local_users.begin(),Instance->local_users.end(),user));
 779                 }
 780                 Instance->clientlist.erase(iter);
 781                 DELETE(user);
 782         }
 783 }
 784
 785 namespace irc
 786 {
 787         namespace whowas
 788         {
 789
 790                 WhoWasGroup::WhoWasGroup(userrec* user) : host(NULL), dhost(NULL), ident(NULL), server(NULL), gecos(NULL), signon(user->signon)
 791                 {
 792                         this->host = strdup(user->host);
 793                         this->dhost = strdup(user->dhost);
 794                         this->ident = strdup(user->ident);
 795                         this->server = user->server;
 796                         this->gecos = strdup(user->fullname);
 797                 }
 798
 799                 WhoWasGroup::~WhoWasGroup()
 800                 {
 801                         if (host)
 802                                 free(host);
 803                         if (dhost)
 804                                 free(dhost);
 805                         if (ident)
 806                                 free(ident);
 807                         if (gecos)
 808                                 free(gecos);
 809                 }
 810
 811                 /* every hour, run this function which removes all entries over 3 days */
 812                 void MaintainWhoWas(time_t t)
 813                 {
 814                         for (whowas_users::iterator iter = ::whowas.begin(); iter != ::whowas.end(); iter++)
 815                         {
 816                                 whowas_set* n = (whowas_set*)iter->second;
 817                                 if (n->size())
 818                                 {
 819                                         while ((n->begin() != n->end()) && ((*n->begin())->signon < t - 259200)) // 3 days
 820                                         {
 821                                                 WhoWasGroup *a = *(n->begin());
 822                                                 DELETE(a);
 823                                                 n->erase(n->begin());
 824                                         }
 825                                 }
 826                         }
 827                 }
 828         };
 829 };
 830
 831 /* adds or updates an entry in the whowas list */
 832 void userrec::AddToWhoWas()
 833 {
 834         irc::whowas::whowas_users::iterator iter = whowas.find(this->nick);
 835
 836         if (iter == whowas.end())
 837         {
 838                 irc::whowas::whowas_set* n = new irc::whowas::whowas_set;
 839                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 840                 n->push_back(a);
 841                 whowas[this->nick] = n;
 842         }
 843         else
 844         {
 845                 irc::whowas::whowas_set* group = (irc::whowas::whowas_set*)iter->second;
 846
 847                 if (group->size() > 10)
 848                 {
 849                         irc::whowas::WhoWasGroup *a = (irc::whowas::WhoWasGroup*)*(group->begin());
 850                         DELETE(a);
 851                         group->pop_front();
 852                 }
 853
 854                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 855                 group->push_back(a);
 856         }
 857 }
 858
 859 /* add a client connection to the sockets list */
 860 void userrec::AddClient(InspIRCd* Instance, int socket, int port, bool iscached, insp_inaddr ip)
 861 {
 862         std::string tempnick = ConvToStr(socket) + "-unknown";
 863         user_hash::iterator iter = Instance->clientlist.find(tempnick);
 864         const char *ipaddr = insp_ntoa(ip);
 865         userrec* New;
 866         int j = 0;
 867
 868         /*
 869          * fix by brain.
 870          * as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 871          * using one as a registered connection. As they are per fd, we can also safely assume
 872          * that we wont have collisions. Therefore, if the nick exists in the list, its only
 873          * used by a dead socket, erase the iterator so that the new client may reclaim it.
 874          * this was probably the cause of 'server ignores me when i hammer it with reconnects'
 875          * issue in earlier alphas/betas
 876          */
 877         if (iter != Instance->clientlist.end())
 878         {
 879                 userrec* goner = iter->second;
 880                 DELETE(goner);
 881                 Instance->clientlist.erase(iter);
 882         }
 883
 884         Instance->Log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr);
 885
 886         New = new userrec(Instance);
 887         Instance->clientlist[tempnick] = New;
 888         New->fd = socket;
 889         strlcpy(New->nick,tempnick.c_str(),NICKMAX-1);
 890
 891         New->server = Instance->FindServerNamePtr(Instance->Config->ServerName);
 892         /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
 893         strcpy(New->ident, "unknown");
 894
 895         New->registered = REG_NONE;
 896         New->signon = Instance->Time() + Instance->Config->dns_timeout;
 897         New->lastping = 1;
 898
 899         Instance->Log(DEBUG,"Setting socket addresses");
 900         New->SetSockAddr(AF_FAMILY, ipaddr, port);
 901         Instance->Log(DEBUG,"Socket addresses set.");
 902
 903         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
 904         for (const char* temp = New->GetIPString(); *temp && j < 64; temp++, j++)
 905                 New->dhost[j] = New->host[j] = *temp;
 906         New->dhost[j] = New->host[j] = 0;
 907
 908         // set the registration timeout for this user
 909         unsigned long class_regtimeout = 90;
 910         int class_flood = 0;
 911         long class_threshold = 5;
 912         long class_sqmax = 262144;      // 256kb
 913         long class_rqmax = 4096;        // 4k
 914
 915         for (ClassVector::iterator i = Instance->Config->Classes.begin(); i != Instance->Config->Classes.end(); i++)
 916         {
 917                 if ((i->type == CC_ALLOW) && (match(ipaddr,i->host.c_str(),true)))
 918                 {
 919                         class_regtimeout = (unsigned long)i->registration_timeout;
 920                         class_flood = i->flood;
 921                         New->pingmax = i->pingtime;
 922                         class_threshold = i->threshold;
 923                         class_sqmax = i->sendqmax;
 924                         class_rqmax = i->recvqmax;
 925                         break;
 926                 }
 927         }
 928
 929         New->nping = Instance->Time() + New->pingmax + Instance->Config->dns_timeout;
 930         New->timeout = Instance->Time() + class_regtimeout;
 931         New->flood = class_flood;
 932         New->threshold = class_threshold;
 933         New->sendqmax = class_sqmax;
 934         New->recvqmax = class_rqmax;
 935
 936         Instance->local_users.push_back(New);
 937
 938         if ((Instance->local_users.size() > Instance->Config->SoftLimit) || (Instance->local_users.size() >= MAXCLIENTS))
 939         {
 940                 userrec::QuitUser(Instance, New,"No more connections allowed");
 941                 return;
 942         }
 943
 944         /*
 945          * XXX -
 946          * this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 947          * its a pretty big but for the moment valid assumption:
 948          * file descriptors are handed out starting at 0, and are recycled as theyre freed.
 949          * therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 950          * irc server at once (or the irc server otherwise initiating this many connections, files etc)
 951          * which for the time being is a physical impossibility (even the largest networks dont have more
 952          * than about 10,000 users on ONE server!)
 953          */
 954         if ((unsigned)socket >= MAX_DESCRIPTORS)
 955         {
 956                 userrec::QuitUser(Instance, New, "Server is full");
 957                 return;
 958         }
 959
 960         ELine* e = Instance->XLines->matches_exception(New);
 961         if (!e)
 962         {
 963                 ZLine* r = Instance->XLines->matches_zline(ipaddr);
 964                 if (r)
 965                 {
 966                         char reason[MAXBUF];
 967                         snprintf(reason,MAXBUF,"Z-Lined: %s",r->reason);
 968                         userrec::QuitUser(Instance, New, reason);
 969                         return;
 970                 }
 971         }
 972
 973         if (socket > -1)
 974         {
 975                 if (!Instance->SE->AddFd(New))
 976                 {
 977                         userrec::QuitUser(Instance, New, "Internal error handling connection");
 978                         return;
 979                 }
 980         }
 981
 982         New->WriteServ("NOTICE Auth :*** Looking up your hostname...");
 983 }
 984
 985 long userrec::GlobalCloneCount()
 986 {
 987         char u1[128];
 988         char u2[128];
 989         long x = 0;
 990
 991         for (user_hash::const_iterator a = ServerInstance->clientlist.begin(); a != ServerInstance->clientlist.end(); a++)
 992         {
 993                 /* We have to match ip's as strings - we don't know what protocol
 994                  * a remote user may be using
 995                  */
 996                 if (strcmp(a->second->GetIPString(u1), this->GetIPString(u2)) == 0)
 997                         x++;
 998         }
 999
1000         return x;
1001 }
1002
1003 long userrec::LocalCloneCount()
1004 {
1005         long x = 0;
1006         for (std::vector<userrec*>::const_iterator a = ServerInstance->local_users.begin(); a != ServerInstance->local_users.end(); a++)
1007         {
1008                 userrec* comp = *a;
1009 #ifdef IPV6
1010                 /* I dont think theres any faster way of matching two ipv6 addresses than memcmp */
1011                 in6_addr* s1 = &(((sockaddr_in6*)comp->ip)->sin6_addr);
1012                 in6_addr* s2 = &(((sockaddr_in6*)this->ip)->sin6_addr);
1013                 if (!memcmp(s1->s6_addr, s2->s6_addr, sizeof(in6_addr)))
1014                         x++;
1015 #else
1016                 in_addr* s1 = &((sockaddr_in*)comp->ip)->sin_addr;
1017                 in_addr* s2 = &((sockaddr_in*)this->ip)->sin_addr;
1018                 if (s1->s_addr == s2->s_addr)
1019                         x++;
1020 #endif
1021         }
1022         return x;
1023 }
1024
1025 void userrec::FullConnect(CullList* Goners)
1026 {
1027         ServerInstance->stats->statsConnects++;
1028         this->idle_lastmsg = ServerInstance->Time();
1029
1030         ConnectClass a = this->GetClass();
1031
1032         if (a.type == CC_DENY)
1033         {
1034                 Goners->AddItem(this,"Unauthorised connection");
1035                 return;
1036         }
1037
1038         if ((*(a.pass.c_str())) && (!this->haspassed))
1039         {
1040                 Goners->AddItem(this,"Invalid password");
1041                 return;
1042         }
1043
1044         if (this->LocalCloneCount() > a.maxlocal)
1045         {
1046                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (local)");
1047                 ServerInstance->WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a.maxlocal, this->GetIPString());
1048                 return;
1049         }
1050         else if (this->GlobalCloneCount() > a.maxglobal)
1051         {
1052                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (global)");
1053                 ServerInstance->WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a.maxglobal, this->GetIPString());
1054                 return;
1055         }
1056
1057         ELine* e = ServerInstance->XLines->matches_exception(this);
1058
1059         if (!e)
1060         {
1061                 GLine* r = ServerInstance->XLines->matches_gline(this);
1062
1063                 if (r)
1064                 {
1065                         char reason[MAXBUF];
1066                         snprintf(reason,MAXBUF,"G-Lined: %s",r->reason);
1067                         Goners->AddItem(this, reason);
1068                         return;
1069                 }
1070
1071                 KLine* n = ServerInstance->XLines->matches_kline(this);
1072
1073                 if (n)
1074                 {
1075                         char reason[MAXBUF];
1076                         snprintf(reason,MAXBUF,"K-Lined: %s",n->reason);
1077                         Goners->AddItem(this, reason);
1078                         return;
1079                 }
1080         }
1081
1082
1083         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
1084         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
1085         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
1086         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
1087         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());
1088
1089         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
1090         // so i'd better split it :)
1091         std::stringstream out(ServerInstance->Config->data005);
1092         std::string token = "";
1093         std::string line5 = "";
1094         int token_counter = 0;
1095
1096         while (!out.eof())
1097         {
1098                 out >> token;
1099                 line5 = line5 + token + " ";
1100                 token_counter++;
1101
1102                 if ((token_counter >= 13) || (out.eof() == true))
1103                 {
1104                         this->WriteServ("005 %s %s:are supported by this server", this->nick, line5.c_str());
1105                         line5 = "";
1106                         token_counter = 0;
1107                 }
1108         }
1109
1110         this->ShowMOTD();
1111
1112         /*
1113          * fix 3 by brain, move registered = 7 below these so that spurious modes and host
1114          * changes dont go out onto the network and produce 'fake direction'.
1115          */
1116         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
1117         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
1118         this->registered = REG_ALL;
1119         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString());
1120 }
1121
1122 /** userrec::UpdateNick()
1123  * re-allocates a nick in the user_hash after they change nicknames,
1124  * returns a pointer to the new user as it may have moved
1125  */
1126 userrec* userrec::UpdateNickHash(const char* New)
1127 {
1128         try
1129         {
1130                 //user_hash::iterator newnick;
1131                 user_hash::iterator oldnick = ServerInstance->clientlist.find(this->nick);
1132
1133                 if (!strcasecmp(this->nick,New))
1134                         return oldnick->second;
1135
1136                 if (oldnick == ServerInstance->clientlist.end())
1137                         return NULL; /* doesnt exist */
1138
1139                 userrec* olduser = oldnick->second;
1140                 ServerInstance->clientlist[New] = olduser;
1141                 ServerInstance->clientlist.erase(oldnick);
1142                 return ServerInstance->clientlist[New];
1143         }
1144
1145         catch (...)
1146         {
1147                 ServerInstance->Log(DEBUG,"Exception in userrec::UpdateNickHash()");
1148                 return NULL;
1149         }
1150 }
1151
1152 bool userrec::ForceNickChange(const char* newnick)
1153 {
1154         try
1155         {
1156                 int MOD_RESULT = 0;
1157
1158                 FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1159
1160                 if (MOD_RESULT)
1161                 {
1162                         ServerInstance->stats->statsCollisions++;
1163                         return false;
1164                 }
1165
1166                 if (ServerInstance->XLines->matches_qline(newnick))
1167                 {
1168                         ServerInstance->stats->statsCollisions++;
1169                         return false;
1170                 }
1171
1172                 if (this->registered == REG_ALL)
1173                 {
1174                         const char* pars[1];
1175                         pars[0] = newnick;
1176                         std::string cmd = "NICK";
1177                         return (ServerInstance->Parser->CallHandler(cmd, pars, 1, this) == CMD_SUCCESS);
1178                 }
1179                 return false;
1180         }
1181
1182         catch (...)
1183         {
1184                 ServerInstance->Log(DEBUG,"Exception in userrec::ForceNickChange()");
1185                 return false;
1186         }
1187 }
1188
1189 void userrec::SetSockAddr(int protocol_family, const char* ip, int port)
1190 {
1191         switch (protocol_family)
1192         {
1193 #ifdef SUPPORT_IP6LINKS
1194                 case AF_INET6:
1195                 {
1196                         ServerInstance->Log(DEBUG,"Set inet6 protocol address");
1197                         sockaddr_in6* sin = new sockaddr_in6;
1198                         sin->sin6_family = AF_INET6;
1199                         sin->sin6_port = port;
1200                         inet_pton(AF_INET6, ip, &sin->sin6_addr);
1201                         this->ip = (sockaddr*)sin;
1202                 }
1203                 break;
1204 #endif
1205                 case AF_INET:
1206                 {
1207                         ServerInstance->Log(DEBUG,"Set inet4 protocol address");
1208                         sockaddr_in* sin = new sockaddr_in;
1209                         sin->sin_family = AF_INET;
1210                         sin->sin_port = port;
1211                         inet_pton(AF_INET, ip, &sin->sin_addr);
1212                         this->ip = (sockaddr*)sin;
1213                 }
1214                 break;
1215                 default:
1216                         ServerInstance->Log(DEBUG,"Ut oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1217                 break;
1218         }
1219 }
1220
1221 int userrec::GetPort()
1222 {
1223         if (this->ip == NULL)
1224                 return 0;
1225
1226         switch (this->GetProtocolFamily())
1227         {
1228 #ifdef SUPPORT_IP6LINKS
1229                 case AF_INET6:
1230                 {
1231                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1232                         return sin->sin6_port;
1233                 }
1234                 break;
1235 #endif
1236                 case AF_INET:
1237                 {
1238                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1239                         return sin->sin_port;
1240                 }
1241                 break;
1242                 default:
1243                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1244                 break;
1245         }
1246         return 0;
1247 }
1248
1249 int userrec::GetProtocolFamily()
1250 {
1251         if (this->ip == NULL)
1252                 return 0;
1253
1254         sockaddr_in* sin = (sockaddr_in*)this->ip;
1255         return sin->sin_family;
1256 }
1257
1258 const char* userrec::GetIPString()
1259 {
1260         static char buf[1024];
1261
1262         if (this->ip == NULL)
1263                 return "";
1264
1265         switch (this->GetProtocolFamily())
1266         {
1267 #ifdef SUPPORT_IP6LINKS
1268                 case AF_INET6:
1269                 {
1270                         static char temp[1024];
1271
1272                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1273                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1274                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1275                         if (*buf == ':')
1276                         {
1277                                 strlcpy(&temp[1], buf, sizeof(temp));
1278                                 *temp = '0';
1279                                 return temp;
1280                         }
1281                         return buf;
1282                 }
1283                 break;
1284 #endif
1285                 case AF_INET:
1286                 {
1287                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1288                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1289                         return buf;
1290                 }
1291                 break;
1292                 default:
1293                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1294                 break;
1295         }
1296         return "";
1297 }
1298
1299 const char* userrec::GetIPString(char* buf)
1300 {
1301         if (this->ip == NULL)
1302         {
1303                 *buf = 0;
1304                 return buf;
1305         }
1306
1307         switch (this->GetProtocolFamily())
1308         {
1309 #ifdef SUPPORT_IP6LINKS
1310                 case AF_INET6:
1311                 {
1312                         static char temp[1024];
1313
1314                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1315                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1316                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1317                         if (*buf == ':')
1318                         {
1319                                 strlcpy(&temp[1], buf, sizeof(temp));
1320                                 *temp = '0';
1321                                 strlcpy(buf, temp, sizeof(temp));
1322                         }
1323                         return buf;
1324                 }
1325                 break;
1326 #endif
1327                 case AF_INET:
1328                 {
1329                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1330                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1331                         return buf;
1332                 }
1333                 break;
1334
1335                 default:
1336                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1337                 break;
1338         }
1339         return "";
1340 }
1341
1342 /** NOTE: We cannot pass a const reference to this method.
1343  * The string is changed by the workings of the method,
1344  * so that if we pass const ref, we end up copying it to
1345  * something we can change anyway. Makes sense to just let
1346  * the compiler do that copy for us.
1347  */
1348 void userrec::Write(std::string text)
1349 {
1350         if ((this->fd < 0) || (this->fd > MAX_DESCRIPTORS))
1351                 return;
1352
1353         try
1354         {
1355                 text.append("\r\n");
1356         }
1357         catch (...)
1358         {
1359                 ServerInstance->Log(DEBUG,"Exception in userrec::Write() std::string::append");
1360                 return;
1361         }
1362
1363         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1364         {
1365                 try
1366                 {
1367                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length());
1368                 }
1369                 catch (ModuleException& modexcept)
1370                 {
1371                         ServerInstance->Log(DEBUG,"Module exception caught: %s",modexcept.GetReason());
1372                 }
1373         }
1374         else
1375         {
1376                 this->AddWriteBuf(text);
1377         }
1378         ServerInstance->stats->statsSent += text.length();
1379 }
1380
1381 /** Write()
1382  */
1383 void userrec::Write(const char *text, ...)
1384 {
1385         va_list argsPtr;
1386         char textbuffer[MAXBUF];
1387
1388         va_start(argsPtr, text);
1389         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1390         va_end(argsPtr);
1391
1392         this->Write(std::string(textbuffer));
1393 }
1394
1395 void userrec::WriteServ(const std::string& text)
1396 {
1397         char textbuffer[MAXBUF];
1398
1399         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1400         this->Write(std::string(textbuffer));
1401 }
1402
1403 /** WriteServ()
1404  *  Same as Write(), except `text' is prefixed with `:server.name '.
1405  */
1406 void userrec::WriteServ(const char* text, ...)
1407 {
1408         va_list argsPtr;
1409         char textbuffer[MAXBUF];
1410
1411         va_start(argsPtr, text);
1412         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1413         va_end(argsPtr);
1414
1415         this->WriteServ(std::string(textbuffer));
1416 }
1417
1418
1419 void userrec::WriteFrom(userrec *user, const std::string &text)
1420 {
1421         char tb[MAXBUF];
1422
1423         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1424
1425         this->Write(std::string(tb));
1426 }
1427
1428
1429 /* write text from an originating user to originating user */
1430
1431 void userrec::WriteFrom(userrec *user, 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->WriteFrom(user, std::string(textbuffer));
1441 }
1442
1443
1444 /* write text to an destination user from a source user (e.g. user privmsg) */
1445
1446 void userrec::WriteTo(userrec *dest, const char *data, ...)
1447 {
1448         char textbuffer[MAXBUF];
1449         va_list argsPtr;
1450
1451         va_start(argsPtr, data);
1452         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1453         va_end(argsPtr);
1454
1455         this->WriteTo(dest, std::string(textbuffer));
1456 }
1457
1458 void userrec::WriteTo(userrec *dest, const std::string &data)
1459 {
1460         dest->WriteFrom(this, data);
1461 }
1462
1463
1464 void userrec::WriteCommon(const char* text, ...)
1465 {
1466         char textbuffer[MAXBUF];
1467         va_list argsPtr;
1468
1469         if (this->registered != REG_ALL)
1470                 return;
1471
1472         va_start(argsPtr, text);
1473         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1474         va_end(argsPtr);
1475
1476         this->WriteCommon(std::string(textbuffer));
1477 }
1478
1479 void userrec::WriteCommon(const std::string &text)
1480 {
1481         try
1482         {
1483                 bool sent_to_at_least_one = false;
1484
1485                 if (this->registered != REG_ALL)
1486                         return;
1487
1488                 uniq_id++;
1489
1490                 for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1491                 {
1492                         ucrec *n = *v;
1493                         if (n->channel)
1494                         {
1495                                 CUList *ulist= n->channel->GetUsers();
1496
1497                                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1498                                 {
1499                                         if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1500                                         {
1501                                                 already_sent[i->second->fd] = uniq_id;
1502                                                 i->second->WriteFrom(this, std::string(text));
1503                                                 sent_to_at_least_one = true;
1504                                         }
1505                                 }
1506                         }
1507                 }
1508
1509                 /*
1510                  * if the user was not in any channels, no users will receive the text. Make sure the user
1511                  * receives their OWN message for WriteCommon
1512                  */
1513                 if (!sent_to_at_least_one)
1514                 {
1515                         this->WriteFrom(this,std::string(text));
1516                 }
1517         }
1518
1519         catch (...)
1520         {
1521                 ServerInstance->Log(DEBUG,"Exception in userrec::WriteCommon()");
1522         }
1523 }
1524
1525
1526 /* write a formatted string to all users who share at least one common
1527  * channel, NOT including the source user e.g. for use in QUIT
1528  */
1529
1530 void userrec::WriteCommonExcept(const char* text, ...)
1531 {
1532         char textbuffer[MAXBUF];
1533         va_list argsPtr;
1534
1535         va_start(argsPtr, text);
1536         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1537         va_end(argsPtr);
1538
1539         this->WriteCommonExcept(std::string(textbuffer));
1540 }
1541
1542 void userrec::WriteCommonExcept(const std::string &text)
1543 {
1544         bool quit_munge = false;
1545         char oper_quit[MAXBUF];
1546         char textbuffer[MAXBUF];
1547
1548         strlcpy(textbuffer, text.c_str(), MAXBUF);
1549
1550         if (this->registered != REG_ALL)
1551                 return;
1552
1553         uniq_id++;
1554
1555         /* TODO: We need some form of WriteCommonExcept that will send two lines, one line to
1556          * opers and the other line to non-opers, then all this hidebans and hidesplits gunk
1557          * can go byebye.
1558          */
1559         if (ServerInstance->Config->HideSplits)
1560         {
1561                 char* check = textbuffer + 6;
1562
1563                 if (!strncasecmp(textbuffer, "QUIT :",6))
1564                 {
1565                         std::stringstream split(check);
1566                         std::string server_one;
1567                         std::string server_two;
1568
1569                         split >> server_one;
1570                         split >> server_two;
1571
1572                         if ((ServerInstance->FindServerName(server_one)) && (ServerInstance->FindServerName(server_two)))
1573                         {
1574                                 strlcpy(oper_quit,textbuffer,MAXQUIT);
1575                                 strlcpy(check,"*.net *.split",MAXQUIT);
1576                                 quit_munge = true;
1577                         }
1578                 }
1579         }
1580
1581         if ((ServerInstance->Config->HideBans) && (!quit_munge))
1582         {
1583                 if ((!strncasecmp(textbuffer, "QUIT :G-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :K-Lined:",14))
1584                 || (!strncasecmp(textbuffer, "QUIT :Q-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :Z-Lined:",14)))
1585                 {
1586                         char* check = textbuffer + 13;
1587                         strlcpy(oper_quit,textbuffer,MAXQUIT);
1588                         *check = 0;  // We don't need to strlcpy, we just chop it from the :
1589                         quit_munge = true;
1590                 }
1591         }
1592
1593         for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1594         {
1595                 ucrec* n = *v;
1596                 if (n->channel)
1597                 {
1598                         CUList *ulist= n->channel->GetUsers();
1599
1600                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1601                         {
1602                                 if (this != i->second)
1603                                 {
1604                                         if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1605                                         {
1606                                                 already_sent[i->second->fd] = uniq_id;
1607                                                 if (quit_munge)
1608                                                         i->second->WriteFrom(this, *i->second->oper ? std::string(oper_quit) : std::string(textbuffer));
1609                                                 else
1610                                                         i->second->WriteFrom(this, std::string(textbuffer));
1611                                         }
1612                                 }
1613                         }
1614                 }
1615         }
1616
1617 }
1618
1619 void userrec::WriteWallOps(const std::string &text)
1620 {
1621         /* Does nothing if theyre not opered */
1622         if ((!*this->oper) && (IS_LOCAL(this)))
1623                 return;
1624
1625         std::string wallop = "WALLOPS :";
1626
1627         try
1628         {
1629                 wallop.append(text);
1630         }
1631         catch (...)
1632         {
1633                 ServerInstance->Log(DEBUG,"Exception in userrec::Write() std::string::append");
1634                 return;
1635         }
1636
1637         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1638         {
1639                 userrec* t = *i;
1640                 if ((IS_LOCAL(t)) && (t->modes[UM_WALLOPS]))
1641                         this->WriteTo(t,wallop);
1642         }
1643 }
1644
1645 void userrec::WriteWallOps(const char* text, ...)
1646 {
1647         char textbuffer[MAXBUF];
1648         va_list argsPtr;
1649
1650         va_start(argsPtr, text);
1651         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1652         va_end(argsPtr);
1653
1654         this->WriteWallOps(std::string(textbuffer));
1655 }
1656
1657 /* return 0 or 1 depending if users u and u2 share one or more common channels
1658  * (used by QUIT, NICK etc which arent channel specific notices)
1659  *
1660  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1661  * the first users channels then the second users channels within the outer loop,
1662  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1663  * all possible iterations). However this new function instead checks against the
1664  * channel's userlist in the inner loop which is a std::map<userrec*,userrec*>
1665  * and saves us time as we already know what pointer value we are after.
1666  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1667  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1668  */
1669 bool userrec::SharesChannelWith(userrec *other)
1670 {
1671         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1672                 return false;
1673
1674         /* Outer loop */
1675         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1676         {
1677                 /* Fetch the channel from the user */
1678                 ucrec* user_channel = *i;
1679
1680                 if (user_channel->channel)
1681                 {
1682                         /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1683                          * by replacing it with a map::find which *should* be more efficient
1684                          */
1685                         if (user_channel->channel->HasUser(other))
1686                                 return true;
1687                 }
1688         }
1689         return false;
1690 }
1691
1692 int userrec::CountChannels()
1693 {
1694         return ChannelCount;
1695 }
1696
1697 void userrec::ModChannelCount(int n)
1698 {
1699         ChannelCount += n;
1700 }
1701
1702 bool userrec::ChangeName(const char* gecos)
1703 {
1704         if (!strcmp(gecos, this->fullname))
1705                 return true;
1706
1707         if (IS_LOCAL(this))
1708         {
1709                 int MOD_RESULT = 0;
1710                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1711                 if (MOD_RESULT)
1712                         return false;
1713                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1714         }
1715         strlcpy(this->fullname,gecos,MAXGECOS+1);
1716         return true;
1717 }
1718
1719 bool userrec::ChangeDisplayedHost(const char* host)
1720 {
1721         if (!strcmp(host, this->dhost))
1722                 return true;
1723
1724         if (IS_LOCAL(this))
1725         {
1726                 int MOD_RESULT = 0;
1727                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host));
1728                 if (MOD_RESULT)
1729                         return false;
1730                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host));
1731         }
1732         if (this->ServerInstance->Config->CycleHosts)
1733                 this->WriteCommonExcept("%s","QUIT :Changing hosts");
1734
1735         strlcpy(this->dhost,host,63);
1736
1737         if (this->ServerInstance->Config->CycleHosts)
1738         {
1739                 for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1740                 {
1741                         if ((*i)->channel)
1742                         {
1743                                 (*i)->channel->WriteAllExceptSender(this, false, 0, "JOIN %s", (*i)->channel->name);
1744                                 std::string n = this->ServerInstance->Modes->ModeString(this, (*i)->channel);
1745                                 if (n.length() > 0)
1746                                         (*i)->channel->WriteAllExceptSender(this, true, 0, "MODE %s +%s", (*i)->channel->name, n.c_str());
1747                         }
1748                 }
1749         }
1750
1751         if (IS_LOCAL(this))
1752                 this->WriteServ("396 %s %s :is now your hidden host",this->nick,this->dhost);
1753
1754         return true;
1755 }
1756
1757 bool userrec::ChangeIdent(const char* newident)
1758 {
1759         if (!strcmp(newident, this->ident))
1760                 return true;
1761
1762         if (this->ServerInstance->Config->CycleHosts)
1763                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1764
1765         strlcpy(this->ident, newident, IDENTMAX+2);
1766
1767         if (this->ServerInstance->Config->CycleHosts)
1768         {
1769                 for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1770                 {
1771                         if ((*i)->channel)
1772                         {
1773                                 (*i)->channel->WriteAllExceptSender(this, false, 0, "JOIN %s", (*i)->channel->name);
1774                                 std::string n = this->ServerInstance->Modes->ModeString(this, (*i)->channel);
1775                                 if (n.length() > 0)
1776                                         (*i)->channel->WriteAllExceptSender(this, true, 0, "MODE %s +%s", (*i)->channel->name, n.c_str());
1777                         }
1778                 }
1779         }
1780
1781         return true;
1782 }
1783
1784 void userrec::NoticeAll(char* text, ...)
1785 {
1786         char textbuffer[MAXBUF];
1787         char formatbuffer[MAXBUF];
1788         va_list argsPtr;
1789
1790         va_start(argsPtr, text);
1791         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1792         va_end(argsPtr);
1793
1794         snprintf(formatbuffer,MAXBUF,"NOTICE $* :%s",textbuffer);
1795
1796         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1797         {
1798                 userrec* t = *i;
1799                 t->WriteFrom(this, std::string(formatbuffer));
1800         }
1801 }
1802
1803
1804 std::string userrec::ChannelList(userrec* source)
1805 {
1806         try
1807         {
1808                 std::string list;
1809                 for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1810                 {
1811                         ucrec* rec = *i;
1812
1813                         if(rec->channel && rec->channel->name)
1814                         {
1815                                 /* If the target is the same as the sender, let them see all their channels.
1816                                  * If the channel is NOT private/secret OR the user shares a common channel
1817                                  * If the user is an oper, and the <options:operspywhois> option is set.
1818                                  */
1819                                 if ((source == this) || (*source->oper && ServerInstance->Config->OperSpyWhois) || (((!rec->channel->modes[CM_PRIVATE]) && (!rec->channel->modes[CM_SECRET])) || (rec->channel->HasUser(source))))
1820                                 {
1821                                         list.append(rec->channel->GetPrefixChar(this)).append(rec->channel->name).append(" ");
1822                                 }
1823                         }
1824                 }
1825                 return list;
1826         }
1827         catch (...)
1828         {
1829                 ServerInstance->Log(DEBUG,"Exception in userrec::ChannelList()");
1830                 return "";
1831         }
1832 }
1833
1834 void userrec::SplitChanList(userrec* dest, const std::string &cl)
1835 {
1836         std::string line;
1837         std::ostringstream prefix;
1838         std::string::size_type start, pos, length;
1839
1840         try
1841         {
1842                 prefix << ":" << ServerInstance->Config->ServerName << " 319 " << this->nick << " " << dest->nick << " :";
1843                 line = prefix.str();
1844
1845                 for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1846                 {
1847                         length = (pos == std::string::npos) ? cl.length() : pos;
1848
1849                         if (line.length() + length - start > 510)
1850                         {
1851                                 this->Write(line);
1852                                 line = prefix.str();
1853                         }
1854
1855                         if(pos == std::string::npos)
1856                         {
1857                                 line.append(cl.substr(start, length - start));
1858                                 break;
1859                         }
1860                         else
1861                         {
1862                                 line.append(cl.substr(start, length - start + 1));
1863                         }
1864                 }
1865
1866                 if (line.length())
1867                 {
1868                         this->Write(line);
1869                 }
1870         }
1871
1872         catch (...)
1873         {
1874                 ServerInstance->Log(DEBUG,"Exception in userrec::SplitChanList()");
1875         }
1876 }
1877
1878
1879 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1880  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1881  * then their ip will be taken as 'priority' anyway, so for example,
1882  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1883  */
1884 ConnectClass& userrec::GetClass()
1885 {
1886         for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1887         {
1888                 if ((match(this->GetIPString(),i->host.c_str(),true)) || (match(this->host,i->host.c_str())))
1889                         return *i;
1890         }
1891
1892         return *(ServerInstance->Config->Classes.begin());
1893 }
1894
1895 void userrec::PurgeEmptyChannels()
1896 {
1897         std::vector<chanrec*> to_delete;
1898
1899         // firstly decrement the count on each channel
1900         for (std::vector<ucrec*>::iterator f = this->chans.begin(); f != this->chans.end(); f++)
1901         {
1902                 ucrec* uc = *f;
1903                 if (uc->channel)
1904                 {
1905                         uc->channel->RemoveAllPrefixes(this);
1906                         if (uc->channel->DelUser(this) == 0)
1907                         {
1908                                 /* No users left in here, mark it for deletion */
1909                                 try
1910                                 {
1911                                         to_delete.push_back(uc->channel);
1912                                 }
1913                                 catch (...)
1914                                 {
1915                                         ServerInstance->Log(DEBUG,"Exception in userrec::PurgeEmptyChannels to_delete.push_back()");
1916                                 }
1917                                 uc->channel = NULL;
1918                         }
1919                 }
1920         }
1921
1922         for (std::vector<chanrec*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1923         {
1924                 chanrec* thischan = *n;
1925                 chan_hash::iterator i2 = ServerInstance->chanlist.find(thischan->name);
1926                 if (i2 != ServerInstance->chanlist.end())
1927                 {
1928                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1929                         DELETE(i2->second);
1930                         ServerInstance->chanlist.erase(i2);
1931                 }
1932         }
1933
1934         this->UnOper();
1935 }
1936
1937 void userrec::ShowMOTD()
1938 {
1939         if (!ServerInstance->Config->MOTD.size())
1940         {
1941                 this->WriteServ("422 %s :Message of the day file is missing.",this->nick);
1942                 return;
1943         }
1944         this->WriteServ("375 %s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1945
1946         for (unsigned int i = 0; i < ServerInstance->Config->MOTD.size(); i++)
1947                 this->WriteServ("372 %s :- %s",this->nick,ServerInstance->Config->MOTD[i].c_str());
1948
1949         this->WriteServ("376 %s :End of message of the day.", this->nick);
1950 }
1951
1952 void userrec::ShowRULES()
1953 {
1954         if (!ServerInstance->Config->RULES.size())
1955         {
1956                 this->WriteServ("NOTICE %s :Rules file is missing.",this->nick);
1957                 return;
1958         }
1959         this->WriteServ("NOTICE %s :%s rules",this->nick,ServerInstance->Config->ServerName);
1960
1961         for (unsigned int i = 0; i < ServerInstance->Config->RULES.size(); i++)
1962                 this->WriteServ("NOTICE %s :%s",this->nick,ServerInstance->Config->RULES[i].c_str());
1963
1964         this->WriteServ("NOTICE %s :End of %s rules.",this->nick,ServerInstance->Config->ServerName);
1965 }
1966
1967 void userrec::HandleEvent(EventType et)
1968 {
1969         /* WARNING: May delete this user! */
1970         try
1971         {
1972                 ServerInstance->ProcessUser(this);
1973         }
1974         catch (...)
1975         {
1976                 ServerInstance->Log(DEBUG,"Exception in userrec::HandleEvent intercepted");
1977         }
1978 }
1979