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         ELine* e = Instance->XLines->matches_exception(New);
 960         if (!e)
 961         {
 962                 ZLine* r = Instance->XLines->matches_zline(ipaddr);
 963                 if (r)
 964                 {
 965                         char reason[MAXBUF];
 966                         snprintf(reason,MAXBUF,"Z-Lined: %s",r->reason);
 967                         userrec::QuitUser(Instance, New, reason);
 968                         return;
 969                 }
 970         }
 971
 972         if (socket > -1)
 973         {
 974                 if (!Instance->SE->AddFd(New))
 975                 {
 976                         userrec::QuitUser(Instance, New, "Internal error handling connection");
 977                         return;
 978                 }
 979         }
 980
 981         New->WriteServ("NOTICE Auth :*** Looking up your hostname...");
 982 }
 983
 984 long userrec::GlobalCloneCount()
 985 {
 986         char u1[128];
 987         char u2[128];
 988         long x = 0;
 989
 990         for (user_hash::const_iterator a = ServerInstance->clientlist.begin(); a != ServerInstance->clientlist.end(); a++)
 991         {
 992                 /* We have to match ip's as strings - we don't know what protocol
 993                  * a remote user may be using
 994                  */
 995                 if (strcmp(a->second->GetIPString(u1), this->GetIPString(u2)) == 0)
 996                         x++;
 997         }
 998
 999         return x;
1000 }
1001
1002 long userrec::LocalCloneCount()
1003 {
1004         long x = 0;
1005         for (std::vector<userrec*>::const_iterator a = ServerInstance->local_users.begin(); a != ServerInstance->local_users.end(); a++)
1006         {
1007                 userrec* comp = *a;
1008 #ifdef IPV6
1009                 /* I dont think theres any faster way of matching two ipv6 addresses than memcmp */
1010                 in6_addr* s1 = &(((sockaddr_in6*)comp->ip)->sin6_addr);
1011                 in6_addr* s2 = &(((sockaddr_in6*)this->ip)->sin6_addr);
1012                 if (!memcmp(s1->s6_addr, s2->s6_addr, sizeof(in6_addr)))
1013                         x++;
1014 #else
1015                 in_addr* s1 = &((sockaddr_in*)comp->ip)->sin_addr;
1016                 in_addr* s2 = &((sockaddr_in*)this->ip)->sin_addr;
1017                 if (s1->s_addr == s2->s_addr)
1018                         x++;
1019 #endif
1020         }
1021         return x;
1022 }
1023
1024 void userrec::FullConnect(CullList* Goners)
1025 {
1026         ServerInstance->stats->statsConnects++;
1027         this->idle_lastmsg = ServerInstance->Time();
1028
1029         ConnectClass a = this->GetClass();
1030
1031         if (a.type == CC_DENY)
1032         {
1033                 Goners->AddItem(this,"Unauthorised connection");
1034                 return;
1035         }
1036
1037         if ((*(a.pass.c_str())) && (!this->haspassed))
1038         {
1039                 Goners->AddItem(this,"Invalid password");
1040                 return;
1041         }
1042
1043         if (this->LocalCloneCount() > a.maxlocal)
1044         {
1045                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (local)");
1046                 ServerInstance->WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a.maxlocal, this->GetIPString());
1047                 return;
1048         }
1049         else if (this->GlobalCloneCount() > a.maxglobal)
1050         {
1051                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (global)");
1052                 ServerInstance->WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a.maxglobal, this->GetIPString());
1053                 return;
1054         }
1055
1056         ELine* e = ServerInstance->XLines->matches_exception(this);
1057
1058         if (!e)
1059         {
1060                 GLine* r = ServerInstance->XLines->matches_gline(this);
1061
1062                 if (r)
1063                 {
1064                         char reason[MAXBUF];
1065                         snprintf(reason,MAXBUF,"G-Lined: %s",r->reason);
1066                         Goners->AddItem(this, reason);
1067                         return;
1068                 }
1069
1070                 KLine* n = ServerInstance->XLines->matches_kline(this);
1071
1072                 if (n)
1073                 {
1074                         char reason[MAXBUF];
1075                         snprintf(reason,MAXBUF,"K-Lined: %s",n->reason);
1076                         Goners->AddItem(this, reason);
1077                         return;
1078                 }
1079         }
1080
1081
1082         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
1083         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
1084         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
1085         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
1086         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());
1087
1088         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
1089         // so i'd better split it :)
1090         std::stringstream out(ServerInstance->Config->data005);
1091         std::string token = "";
1092         std::string line5 = "";
1093         int token_counter = 0;
1094
1095         while (!out.eof())
1096         {
1097                 out >> token;
1098                 line5 = line5 + token + " ";
1099                 token_counter++;
1100
1101                 if ((token_counter >= 13) || (out.eof() == true))
1102                 {
1103                         this->WriteServ("005 %s %s:are supported by this server", this->nick, line5.c_str());
1104                         line5 = "";
1105                         token_counter = 0;
1106                 }
1107         }
1108
1109         this->ShowMOTD();
1110
1111         /*
1112          * fix 3 by brain, move registered = 7 below these so that spurious modes and host
1113          * changes dont go out onto the network and produce 'fake direction'.
1114          */
1115         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
1116         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
1117         this->registered = REG_ALL;
1118         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString());
1119 }
1120
1121 /** userrec::UpdateNick()
1122  * re-allocates a nick in the user_hash after they change nicknames,
1123  * returns a pointer to the new user as it may have moved
1124  */
1125 userrec* userrec::UpdateNickHash(const char* New)
1126 {
1127         try
1128         {
1129                 //user_hash::iterator newnick;
1130                 user_hash::iterator oldnick = ServerInstance->clientlist.find(this->nick);
1131
1132                 if (!strcasecmp(this->nick,New))
1133                         return oldnick->second;
1134
1135                 if (oldnick == ServerInstance->clientlist.end())
1136                         return NULL; /* doesnt exist */
1137
1138                 userrec* olduser = oldnick->second;
1139                 ServerInstance->clientlist[New] = olduser;
1140                 ServerInstance->clientlist.erase(oldnick);
1141                 return ServerInstance->clientlist[New];
1142         }
1143
1144         catch (...)
1145         {
1146                 ServerInstance->Log(DEBUG,"Exception in userrec::UpdateNickHash()");
1147                 return NULL;
1148         }
1149 }
1150
1151 bool userrec::ForceNickChange(const char* newnick)
1152 {
1153         try
1154         {
1155                 int MOD_RESULT = 0;
1156
1157                 FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1158
1159                 if (MOD_RESULT)
1160                 {
1161                         ServerInstance->stats->statsCollisions++;
1162                         return false;
1163                 }
1164
1165                 if (ServerInstance->XLines->matches_qline(newnick))
1166                 {
1167                         ServerInstance->stats->statsCollisions++;
1168                         return false;
1169                 }
1170
1171                 if (this->registered == REG_ALL)
1172                 {
1173                         const char* pars[1];
1174                         pars[0] = newnick;
1175                         std::string cmd = "NICK";
1176                         return (ServerInstance->Parser->CallHandler(cmd, pars, 1, this) == CMD_SUCCESS);
1177                 }
1178                 return false;
1179         }
1180
1181         catch (...)
1182         {
1183                 ServerInstance->Log(DEBUG,"Exception in userrec::ForceNickChange()");
1184                 return false;
1185         }
1186 }
1187
1188 void userrec::SetSockAddr(int protocol_family, const char* ip, int port)
1189 {
1190         switch (protocol_family)
1191         {
1192 #ifdef SUPPORT_IP6LINKS
1193                 case AF_INET6:
1194                 {
1195                         ServerInstance->Log(DEBUG,"Set inet6 protocol address");
1196                         sockaddr_in6* sin = new sockaddr_in6;
1197                         sin->sin6_family = AF_INET6;
1198                         sin->sin6_port = port;
1199                         inet_pton(AF_INET6, ip, &sin->sin6_addr);
1200                         this->ip = (sockaddr*)sin;
1201                 }
1202                 break;
1203 #endif
1204                 case AF_INET:
1205                 {
1206                         ServerInstance->Log(DEBUG,"Set inet4 protocol address");
1207                         sockaddr_in* sin = new sockaddr_in;
1208                         sin->sin_family = AF_INET;
1209                         sin->sin_port = port;
1210                         inet_pton(AF_INET, ip, &sin->sin_addr);
1211                         this->ip = (sockaddr*)sin;
1212                 }
1213                 break;
1214                 default:
1215                         ServerInstance->Log(DEBUG,"Ut oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1216                 break;
1217         }
1218 }
1219
1220 int userrec::GetPort()
1221 {
1222         if (this->ip == NULL)
1223                 return 0;
1224
1225         switch (this->GetProtocolFamily())
1226         {
1227 #ifdef SUPPORT_IP6LINKS
1228                 case AF_INET6:
1229                 {
1230                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1231                         return sin->sin6_port;
1232                 }
1233                 break;
1234 #endif
1235                 case AF_INET:
1236                 {
1237                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1238                         return sin->sin_port;
1239                 }
1240                 break;
1241                 default:
1242                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1243                 break;
1244         }
1245         return 0;
1246 }
1247
1248 int userrec::GetProtocolFamily()
1249 {
1250         if (this->ip == NULL)
1251                 return 0;
1252
1253         sockaddr_in* sin = (sockaddr_in*)this->ip;
1254         return sin->sin_family;
1255 }
1256
1257 const char* userrec::GetIPString()
1258 {
1259         static char buf[1024];
1260
1261         if (this->ip == NULL)
1262                 return "";
1263
1264         switch (this->GetProtocolFamily())
1265         {
1266 #ifdef SUPPORT_IP6LINKS
1267                 case AF_INET6:
1268                 {
1269                         static char temp[1024];
1270
1271                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1272                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1273                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1274                         if (*buf == ':')
1275                         {
1276                                 strlcpy(&temp[1], buf, sizeof(temp));
1277                                 *temp = '0';
1278                                 return temp;
1279                         }
1280                         return buf;
1281                 }
1282                 break;
1283 #endif
1284                 case AF_INET:
1285                 {
1286                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1287                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1288                         return buf;
1289                 }
1290                 break;
1291                 default:
1292                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1293                 break;
1294         }
1295         return "";
1296 }
1297
1298 const char* userrec::GetIPString(char* buf)
1299 {
1300         if (this->ip == NULL)
1301         {
1302                 *buf = 0;
1303                 return buf;
1304         }
1305
1306         switch (this->GetProtocolFamily())
1307         {
1308 #ifdef SUPPORT_IP6LINKS
1309                 case AF_INET6:
1310                 {
1311                         static char temp[1024];
1312
1313                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1314                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1315                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1316                         if (*buf == ':')
1317                         {
1318                                 strlcpy(&temp[1], buf, sizeof(temp));
1319                                 *temp = '0';
1320                                 strlcpy(buf, temp, sizeof(temp));
1321                         }
1322                         return buf;
1323                 }
1324                 break;
1325 #endif
1326                 case AF_INET:
1327                 {
1328                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1329                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1330                         return buf;
1331                 }
1332                 break;
1333
1334                 default:
1335                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1336                 break;
1337         }
1338         return "";
1339 }
1340
1341 /** NOTE: We cannot pass a const reference to this method.
1342  * The string is changed by the workings of the method,
1343  * so that if we pass const ref, we end up copying it to
1344  * something we can change anyway. Makes sense to just let
1345  * the compiler do that copy for us.
1346  */
1347 void userrec::Write(std::string text)
1348 {
1349         if ((this->fd < 0) || (this->fd > MAX_DESCRIPTORS))
1350                 return;
1351
1352         try
1353         {
1354                 text.append("\r\n");
1355         }
1356         catch (...)
1357         {
1358                 ServerInstance->Log(DEBUG,"Exception in userrec::Write() std::string::append");
1359                 return;
1360         }
1361
1362         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1363         {
1364                 try
1365                 {
1366                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length());
1367                 }
1368                 catch (ModuleException& modexcept)
1369                 {
1370                         ServerInstance->Log(DEBUG,"Module exception caught: %s",modexcept.GetReason());
1371                 }
1372         }
1373         else
1374         {
1375                 this->AddWriteBuf(text);
1376         }
1377         ServerInstance->stats->statsSent += text.length();
1378 }
1379
1380 /** Write()
1381  */
1382 void userrec::Write(const char *text, ...)
1383 {
1384         va_list argsPtr;
1385         char textbuffer[MAXBUF];
1386
1387         va_start(argsPtr, text);
1388         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1389         va_end(argsPtr);
1390
1391         this->Write(std::string(textbuffer));
1392 }
1393
1394 void userrec::WriteServ(const std::string& text)
1395 {
1396         char textbuffer[MAXBUF];
1397
1398         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1399         this->Write(std::string(textbuffer));
1400 }
1401
1402 /** WriteServ()
1403  *  Same as Write(), except `text' is prefixed with `:server.name '.
1404  */
1405 void userrec::WriteServ(const char* text, ...)
1406 {
1407         va_list argsPtr;
1408         char textbuffer[MAXBUF];
1409
1410         va_start(argsPtr, text);
1411         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1412         va_end(argsPtr);
1413
1414         this->WriteServ(std::string(textbuffer));
1415 }
1416
1417
1418 void userrec::WriteFrom(userrec *user, const std::string &text)
1419 {
1420         char tb[MAXBUF];
1421
1422         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1423
1424         this->Write(std::string(tb));
1425 }
1426
1427
1428 /* write text from an originating user to originating user */
1429
1430 void userrec::WriteFrom(userrec *user, const char* text, ...)
1431 {
1432         va_list argsPtr;
1433         char textbuffer[MAXBUF];
1434
1435         va_start(argsPtr, text);
1436         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1437         va_end(argsPtr);
1438
1439         this->WriteFrom(user, std::string(textbuffer));
1440 }
1441
1442
1443 /* write text to an destination user from a source user (e.g. user privmsg) */
1444
1445 void userrec::WriteTo(userrec *dest, const char *data, ...)
1446 {
1447         char textbuffer[MAXBUF];
1448         va_list argsPtr;
1449
1450         va_start(argsPtr, data);
1451         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1452         va_end(argsPtr);
1453
1454         this->WriteTo(dest, std::string(textbuffer));
1455 }
1456
1457 void userrec::WriteTo(userrec *dest, const std::string &data)
1458 {
1459         dest->WriteFrom(this, data);
1460 }
1461
1462
1463 void userrec::WriteCommon(const char* text, ...)
1464 {
1465         char textbuffer[MAXBUF];
1466         va_list argsPtr;
1467
1468         if (this->registered != REG_ALL)
1469                 return;
1470
1471         va_start(argsPtr, text);
1472         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1473         va_end(argsPtr);
1474
1475         this->WriteCommon(std::string(textbuffer));
1476 }
1477
1478 void userrec::WriteCommon(const std::string &text)
1479 {
1480         try
1481         {
1482                 bool sent_to_at_least_one = false;
1483
1484                 if (this->registered != REG_ALL)
1485                         return;
1486
1487                 uniq_id++;
1488
1489                 for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1490                 {
1491                         ucrec *n = *v;
1492                         if (n->channel)
1493                         {
1494                                 CUList *ulist= n->channel->GetUsers();
1495
1496                                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1497                                 {
1498                                         if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1499                                         {
1500                                                 already_sent[i->second->fd] = uniq_id;
1501                                                 i->second->WriteFrom(this, std::string(text));
1502                                                 sent_to_at_least_one = true;
1503                                         }
1504                                 }
1505                         }
1506                 }
1507
1508                 /*
1509                  * if the user was not in any channels, no users will receive the text. Make sure the user
1510                  * receives their OWN message for WriteCommon
1511                  */
1512                 if (!sent_to_at_least_one)
1513                 {
1514                         this->WriteFrom(this,std::string(text));
1515                 }
1516         }
1517
1518         catch (...)
1519         {
1520                 ServerInstance->Log(DEBUG,"Exception in userrec::WriteCommon()");
1521         }
1522 }
1523
1524
1525 /* write a formatted string to all users who share at least one common
1526  * channel, NOT including the source user e.g. for use in QUIT
1527  */
1528
1529 void userrec::WriteCommonExcept(const char* text, ...)
1530 {
1531         char textbuffer[MAXBUF];
1532         va_list argsPtr;
1533
1534         va_start(argsPtr, text);
1535         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1536         va_end(argsPtr);
1537
1538         this->WriteCommonExcept(std::string(textbuffer));
1539 }
1540
1541 void userrec::WriteCommonExcept(const std::string &text)
1542 {
1543         bool quit_munge = false;
1544         char oper_quit[MAXBUF];
1545         char textbuffer[MAXBUF];
1546
1547         strlcpy(textbuffer, text.c_str(), MAXBUF);
1548
1549         if (this->registered != REG_ALL)
1550                 return;
1551
1552         uniq_id++;
1553
1554         /* TODO: We need some form of WriteCommonExcept that will send two lines, one line to
1555          * opers and the other line to non-opers, then all this hidebans and hidesplits gunk
1556          * can go byebye.
1557          */
1558         if (ServerInstance->Config->HideSplits)
1559         {
1560                 char* check = textbuffer + 6;
1561
1562                 if (!strncasecmp(textbuffer, "QUIT :",6))
1563                 {
1564                         std::stringstream split(check);
1565                         std::string server_one;
1566                         std::string server_two;
1567
1568                         split >> server_one;
1569                         split >> server_two;
1570
1571                         if ((ServerInstance->FindServerName(server_one)) && (ServerInstance->FindServerName(server_two)))
1572                         {
1573                                 strlcpy(oper_quit,textbuffer,MAXQUIT);
1574                                 strlcpy(check,"*.net *.split",MAXQUIT);
1575                                 quit_munge = true;
1576                         }
1577                 }
1578         }
1579
1580         if ((ServerInstance->Config->HideBans) && (!quit_munge))
1581         {
1582                 if ((!strncasecmp(textbuffer, "QUIT :G-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :K-Lined:",14))
1583                 || (!strncasecmp(textbuffer, "QUIT :Q-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :Z-Lined:",14)))
1584                 {
1585                         char* check = textbuffer + 13;
1586                         strlcpy(oper_quit,textbuffer,MAXQUIT);
1587                         *check = 0;  // We don't need to strlcpy, we just chop it from the :
1588                         quit_munge = true;
1589                 }
1590         }
1591
1592         for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1593         {
1594                 ucrec* n = *v;
1595                 if (n->channel)
1596                 {
1597                         CUList *ulist= n->channel->GetUsers();
1598
1599                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1600                         {
1601                                 if (this != i->second)
1602                                 {
1603                                         if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1604                                         {
1605                                                 already_sent[i->second->fd] = uniq_id;
1606                                                 if (quit_munge)
1607                                                         i->second->WriteFrom(this, *i->second->oper ? std::string(oper_quit) : std::string(textbuffer));
1608                                                 else
1609                                                         i->second->WriteFrom(this, std::string(textbuffer));
1610                                         }
1611                                 }
1612                         }
1613                 }
1614         }
1615
1616 }
1617
1618 void userrec::WriteWallOps(const std::string &text)
1619 {
1620         /* Does nothing if theyre not opered */
1621         if ((!*this->oper) && (IS_LOCAL(this)))
1622                 return;
1623
1624         std::string wallop = "WALLOPS :";
1625
1626         try
1627         {
1628                 wallop.append(text);
1629         }
1630         catch (...)
1631         {
1632                 ServerInstance->Log(DEBUG,"Exception in userrec::Write() std::string::append");
1633                 return;
1634         }
1635
1636         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1637         {
1638                 userrec* t = *i;
1639                 if ((IS_LOCAL(t)) && (t->modes[UM_WALLOPS]))
1640                         this->WriteTo(t,wallop);
1641         }
1642 }
1643
1644 void userrec::WriteWallOps(const char* text, ...)
1645 {
1646         char textbuffer[MAXBUF];
1647         va_list argsPtr;
1648
1649         va_start(argsPtr, text);
1650         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1651         va_end(argsPtr);
1652
1653         this->WriteWallOps(std::string(textbuffer));
1654 }
1655
1656 /* return 0 or 1 depending if users u and u2 share one or more common channels
1657  * (used by QUIT, NICK etc which arent channel specific notices)
1658  *
1659  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1660  * the first users channels then the second users channels within the outer loop,
1661  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1662  * all possible iterations). However this new function instead checks against the
1663  * channel's userlist in the inner loop which is a std::map<userrec*,userrec*>
1664  * and saves us time as we already know what pointer value we are after.
1665  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1666  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1667  */
1668 bool userrec::SharesChannelWith(userrec *other)
1669 {
1670         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1671                 return false;
1672
1673         /* Outer loop */
1674         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1675         {
1676                 /* Fetch the channel from the user */
1677                 ucrec* user_channel = *i;
1678
1679                 if (user_channel->channel)
1680                 {
1681                         /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1682                          * by replacing it with a map::find which *should* be more efficient
1683                          */
1684                         if (user_channel->channel->HasUser(other))
1685                                 return true;
1686                 }
1687         }
1688         return false;
1689 }
1690
1691 int userrec::CountChannels()
1692 {
1693         return ChannelCount;
1694 }
1695
1696 void userrec::ModChannelCount(int n)
1697 {
1698         ChannelCount += n;
1699 }
1700
1701 bool userrec::ChangeName(const char* gecos)
1702 {
1703         if (!strcmp(gecos, this->fullname))
1704                 return true;
1705
1706         if (IS_LOCAL(this))
1707         {
1708                 int MOD_RESULT = 0;
1709                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1710                 if (MOD_RESULT)
1711                         return false;
1712                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1713         }
1714         strlcpy(this->fullname,gecos,MAXGECOS+1);
1715         return true;
1716 }
1717
1718 bool userrec::ChangeDisplayedHost(const char* host)
1719 {
1720         if (!strcmp(host, this->dhost))
1721                 return true;
1722
1723         if (IS_LOCAL(this))
1724         {
1725                 int MOD_RESULT = 0;
1726                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host));
1727                 if (MOD_RESULT)
1728                         return false;
1729                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host));
1730         }
1731         if (this->ServerInstance->Config->CycleHosts)
1732                 this->WriteCommonExcept("%s","QUIT :Changing hosts");
1733
1734         strlcpy(this->dhost,host,63);
1735
1736         if (this->ServerInstance->Config->CycleHosts)
1737         {
1738                 for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1739                 {
1740                         if ((*i)->channel)
1741                         {
1742                                 (*i)->channel->WriteAllExceptSender(this, false, 0, "JOIN %s", (*i)->channel->name);
1743                                 std::string n = this->ServerInstance->Modes->ModeString(this, (*i)->channel);
1744                                 if (n.length() > 0)
1745                                         (*i)->channel->WriteAllExceptSender(this, true, 0, "MODE %s +%s", (*i)->channel->name, n.c_str());
1746                         }
1747                 }
1748         }
1749
1750         if (IS_LOCAL(this))
1751                 this->WriteServ("396 %s %s :is now your hidden host",this->nick,this->dhost);
1752
1753         return true;
1754 }
1755
1756 bool userrec::ChangeIdent(const char* newident)
1757 {
1758         if (!strcmp(newident, this->ident))
1759                 return true;
1760
1761         if (this->ServerInstance->Config->CycleHosts)
1762                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1763
1764         strlcpy(this->ident, newident, IDENTMAX+2);
1765
1766         if (this->ServerInstance->Config->CycleHosts)
1767         {
1768                 for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1769                 {
1770                         if ((*i)->channel)
1771                         {
1772                                 (*i)->channel->WriteAllExceptSender(this, false, 0, "JOIN %s", (*i)->channel->name);
1773                                 std::string n = this->ServerInstance->Modes->ModeString(this, (*i)->channel);
1774                                 if (n.length() > 0)
1775                                         (*i)->channel->WriteAllExceptSender(this, true, 0, "MODE %s +%s", (*i)->channel->name, n.c_str());
1776                         }
1777                 }
1778         }
1779
1780         return true;
1781 }
1782
1783 void userrec::NoticeAll(char* text, ...)
1784 {
1785         char textbuffer[MAXBUF];
1786         char formatbuffer[MAXBUF];
1787         va_list argsPtr;
1788
1789         va_start(argsPtr, text);
1790         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1791         va_end(argsPtr);
1792
1793         snprintf(formatbuffer,MAXBUF,"NOTICE $* :%s",textbuffer);
1794
1795         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1796         {
1797                 userrec* t = *i;
1798                 t->WriteFrom(this, std::string(formatbuffer));
1799         }
1800 }
1801
1802
1803 std::string userrec::ChannelList(userrec* source)
1804 {
1805         try
1806         {
1807                 std::string list;
1808                 for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1809                 {
1810                         ucrec* rec = *i;
1811
1812                         if(rec->channel && rec->channel->name)
1813                         {
1814                                 /* If the target is the same as the sender, let them see all their channels.
1815                                  * If the channel is NOT private/secret OR the user shares a common channel
1816                                  * If the user is an oper, and the <options:operspywhois> option is set.
1817                                  */
1818                                 if ((source == this) || (*source->oper && ServerInstance->Config->OperSpyWhois) || (((!rec->channel->modes[CM_PRIVATE]) && (!rec->channel->modes[CM_SECRET])) || (rec->channel->HasUser(source))))
1819                                 {
1820                                         list.append(rec->channel->GetPrefixChar(this)).append(rec->channel->name).append(" ");
1821                                 }
1822                         }
1823                 }
1824                 return list;
1825         }
1826         catch (...)
1827         {
1828                 ServerInstance->Log(DEBUG,"Exception in userrec::ChannelList()");
1829                 return "";
1830         }
1831 }
1832
1833 void userrec::SplitChanList(userrec* dest, const std::string &cl)
1834 {
1835         std::string line;
1836         std::ostringstream prefix;
1837         std::string::size_type start, pos, length;
1838
1839         try
1840         {
1841                 prefix << ":" << ServerInstance->Config->ServerName << " 319 " << this->nick << " " << dest->nick << " :";
1842                 line = prefix.str();
1843
1844                 for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1845                 {
1846                         length = (pos == std::string::npos) ? cl.length() : pos;
1847
1848                         if (line.length() + length - start > 510)
1849                         {
1850                                 this->Write(line);
1851                                 line = prefix.str();
1852                         }
1853
1854                         if(pos == std::string::npos)
1855                         {
1856                                 line.append(cl.substr(start, length - start));
1857                                 break;
1858                         }
1859                         else
1860                         {
1861                                 line.append(cl.substr(start, length - start + 1));
1862                         }
1863                 }
1864
1865                 if (line.length())
1866                 {
1867                         this->Write(line);
1868                 }
1869         }
1870
1871         catch (...)
1872         {
1873                 ServerInstance->Log(DEBUG,"Exception in userrec::SplitChanList()");
1874         }
1875 }
1876
1877
1878 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1879  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1880  * then their ip will be taken as 'priority' anyway, so for example,
1881  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1882  */
1883 ConnectClass& userrec::GetClass()
1884 {
1885         for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1886         {
1887                 if ((match(this->GetIPString(),i->host.c_str(),true)) || (match(this->host,i->host.c_str())))
1888                         return *i;
1889         }
1890
1891         return *(ServerInstance->Config->Classes.begin());
1892 }
1893
1894 void userrec::PurgeEmptyChannels()
1895 {
1896         std::vector<chanrec*> to_delete;
1897
1898         // firstly decrement the count on each channel
1899         for (std::vector<ucrec*>::iterator f = this->chans.begin(); f != this->chans.end(); f++)
1900         {
1901                 ucrec* uc = *f;
1902                 if (uc->channel)
1903                 {
1904                         uc->channel->RemoveAllPrefixes(this);
1905                         if (uc->channel->DelUser(this) == 0)
1906                         {
1907                                 /* No users left in here, mark it for deletion */
1908                                 try
1909                                 {
1910                                         to_delete.push_back(uc->channel);
1911                                 }
1912                                 catch (...)
1913                                 {
1914                                         ServerInstance->Log(DEBUG,"Exception in userrec::PurgeEmptyChannels to_delete.push_back()");
1915                                 }
1916                                 uc->channel = NULL;
1917                         }
1918                 }
1919         }
1920
1921         for (std::vector<chanrec*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1922         {
1923                 chanrec* thischan = *n;
1924                 chan_hash::iterator i2 = ServerInstance->chanlist.find(thischan->name);
1925                 if (i2 != ServerInstance->chanlist.end())
1926                 {
1927                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1928                         DELETE(i2->second);
1929                         ServerInstance->chanlist.erase(i2);
1930                 }
1931         }
1932
1933         this->UnOper();
1934 }
1935
1936 void userrec::ShowMOTD()
1937 {
1938         if (!ServerInstance->Config->MOTD.size())
1939         {
1940                 this->WriteServ("422 %s :Message of the day file is missing.",this->nick);
1941                 return;
1942         }
1943         this->WriteServ("375 %s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1944
1945         for (unsigned int i = 0; i < ServerInstance->Config->MOTD.size(); i++)
1946                 this->WriteServ("372 %s :- %s",this->nick,ServerInstance->Config->MOTD[i].c_str());
1947
1948         this->WriteServ("376 %s :End of message of the day.", this->nick);
1949 }
1950
1951 void userrec::ShowRULES()
1952 {
1953         if (!ServerInstance->Config->RULES.size())
1954         {
1955                 this->WriteServ("NOTICE %s :Rules file is missing.",this->nick);
1956                 return;
1957         }
1958         this->WriteServ("NOTICE %s :%s rules",this->nick,ServerInstance->Config->ServerName);
1959
1960         for (unsigned int i = 0; i < ServerInstance->Config->RULES.size(); i++)
1961                 this->WriteServ("NOTICE %s :%s",this->nick,ServerInstance->Config->RULES[i].c_str());
1962
1963         this->WriteServ("NOTICE %s :End of %s rules.",this->nick,ServerInstance->Config->ServerName);
1964 }
1965
1966 void userrec::HandleEvent(EventType et)
1967 {
1968         /* WARNING: May delete this user! */
1969         try
1970         {
1971                 ServerInstance->ProcessUser(this);
1972         }
1973         catch (...)
1974         {
1975                 ServerInstance->Log(DEBUG,"Exception in userrec::HandleEvent intercepted");
1976         }
1977 }
1978