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 "inspircd_config.h"
  18 #include "configreader.h"
  19 #include "channels.h"
  20 #include "connection.h"
  21 #include "users.h"
  22 #include "inspircd.h"
  23 #include <stdarg.h>
  24 #include "inspstring.h"
  25 #include "commands.h"
  26 #include "helperfuncs.h"
  27 #include "typedefs.h"
  28 #include "socketengine.h"
  29 #include "hashcomp.h"
  30 #include "wildcard.h"
  31 #include "xline.h"
  32 #include "cull_list.h"
  33
  34 extern std::vector<Module*> modules;
  35 extern std::vector<ircd_module*> factory;
  36 extern int MODCOUNT;
  37 extern time_t TIME;
  38 extern Server* MyServer;
  39
  40 irc::whowas::whowas_users whowas;
  41 static unsigned long already_sent[MAX_DESCRIPTORS] = {0};
  42 std::vector<userrec*> all_opers;
  43
  44 typedef std::map<irc::string,char*> opertype_t;
  45 typedef opertype_t operclass_t;
  46
  47 opertype_t opertypes;
  48 operclass_t operclass;
  49
  50 /* XXX: Used for speeding up WriteCommon operations */
  51 unsigned long uniq_id = 0;
  52
  53 bool InitTypes(ServerConfig* conf, const char* tag)
  54 {
  55         for (opertype_t::iterator n = opertypes.begin(); n != opertypes.end(); n++)
  56         {
  57                 if (n->second)
  58                         delete[] n->second;
  59         }
  60
  61         opertypes.clear();
  62         return true;
  63 }
  64
  65 bool InitClasses(ServerConfig* conf, const char* tag)
  66 {
  67         for (operclass_t::iterator n = operclass.begin(); n != operclass.end(); n++)
  68         {
  69                 if (n->second)
  70                         delete[] n->second;
  71         }
  72
  73         operclass.clear();
  74         return true;
  75 }
  76
  77 bool DoType(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
  78 {
  79         char* TypeName = (char*)values[0];
  80         char* Classes = (char*)values[1];
  81
  82         opertypes[TypeName] = strdup(Classes);
  83         log(DEBUG,"Read oper TYPE '%s' with classes '%s'",TypeName,Classes);
  84         return true;
  85 }
  86
  87 bool DoClass(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
  88 {
  89         char* ClassName = (char*)values[0];
  90         char* CommandList = (char*)values[1];
  91
  92         operclass[ClassName] = strdup(CommandList);
  93         log(DEBUG,"Read oper CLASS '%s' with commands '%s'",ClassName,CommandList);
  94         return true;
  95 }
  96
  97 bool DoneClassesAndTypes(ServerConfig* conf, const char* tag)
  98 {
  99         return true;
 100 }
 101
 102 bool userrec::ProcessNoticeMasks(const char *sm)
 103 {
 104         bool adding = true;
 105         const char *c = sm;
 106
 107         while (c && *c)
 108         {
 109                 switch (*c)
 110                 {
 111                         case '+':
 112                                 adding = true;
 113                                 break;
 114                         case '-':
 115                                 adding = false;
 116                                 break;
 117                         default:
 118                                 if ((*c >= 'A') && (*c <= 'z'))
 119                                         this->SetNoticeMask(*c, adding);
 120                                 break;
 121                 }
 122
 123                 *c++;
 124         }
 125
 126         return true;
 127 }
 128
 129 void userrec::StartDNSLookup()
 130 {
 131         log(DEBUG,"Commencing reverse lookup");
 132         try
 133         {
 134                 log(DEBUG,"Passing instance: %08x",this->ServerInstance);
 135                 res_reverse = new UserResolver(this->ServerInstance, this, this->GetIPString(), false);
 136                 MyServer->AddResolver(res_reverse);
 137         }
 138         catch (ModuleException& e)
 139         {
 140                 log(DEBUG,"Error in resolver: %s",e.GetReason());
 141         }
 142 }
 143
 144 UserResolver::UserResolver(InspIRCd* Instance, userrec* user, std::string to_resolve, bool forward) :
 145         Resolver(Instance, to_resolve, forward ? DNS_QUERY_FORWARD : DNS_QUERY_REVERSE), bound_user(user)
 146 {
 147         this->fwd = forward;
 148         this->bound_fd = user->fd;
 149 }
 150
 151 void UserResolver::OnLookupComplete(const std::string &result)
 152 {
 153         if ((!this->fwd) && (ServerInstance->fd_ref_table[this->bound_fd] == this->bound_user))
 154         {
 155                 log(DEBUG,"Commencing forward lookup");
 156                 this->bound_user->stored_host = result;
 157                 try
 158                 {
 159                         bound_user->res_forward = new UserResolver(this->ServerInstance, this->bound_user, result, true);
 160                         MyServer->AddResolver(bound_user->res_forward);
 161                 }
 162                 catch (ModuleException& e)
 163                 {
 164                         log(DEBUG,"Error in resolver: %s",e.GetReason());
 165                 }
 166         }
 167         else if ((this->fwd) && (ServerInstance->fd_ref_table[this->bound_fd] == this->bound_user))
 168         {
 169                 /* Both lookups completed */
 170                 if (this->bound_user->GetIPString() == result)
 171                 {
 172                         std::string hostname = this->bound_user->stored_host;
 173                         if (hostname.length() < 65)
 174                         {
 175                                 /* Hostnames starting with : are not a good thing (tm) */
 176                                 if (*(hostname.c_str()) == ':')
 177                                         hostname = "0" + hostname;
 178
 179                                 this->bound_user->WriteServ("NOTICE Auth :*** Found your hostname (%s)", hostname.c_str());
 180                                 this->bound_user->dns_done = true;
 181                                 strlcpy(this->bound_user->dhost, hostname.c_str(),64);
 182                                 strlcpy(this->bound_user->host, hostname.c_str(),64);
 183                         }
 184                         else
 185                         {
 186                                 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());
 187                         }
 188                 }
 189                 else
 190                 {
 191                         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());
 192                 }
 193         }
 194 }
 195
 196 void UserResolver::OnError(ResolverError e, const std::string &errormessage)
 197 {
 198         if (ServerInstance->fd_ref_table[this->bound_fd] == this->bound_user)
 199         {
 200                 /* Error message here */
 201                 this->bound_user->WriteServ("NOTICE Auth :*** Could not resolve your hostname, using your IP address (%s) instead.", this->bound_user->GetIPString());
 202                 this->bound_user->dns_done = true;
 203         }
 204 }
 205
 206
 207 bool userrec::IsNoticeMaskSet(unsigned char sm)
 208 {
 209         return (snomasks[sm-65]);
 210 }
 211
 212 void userrec::SetNoticeMask(unsigned char sm, bool value)
 213 {
 214         snomasks[sm-65] = value;
 215 }
 216
 217 const char* userrec::FormatNoticeMasks()
 218 {
 219         static char data[MAXBUF];
 220         int offset = 0;
 221
 222         for (int n = 0; n < 64; n++)
 223         {
 224                 if (snomasks[n])
 225                         data[offset++] = n+65;
 226         }
 227
 228         data[offset] = 0;
 229         return data;
 230 }
 231
 232
 233
 234 bool userrec::IsModeSet(unsigned char m)
 235 {
 236         return (modes[m-65]);
 237 }
 238
 239 void userrec::SetMode(unsigned char m, bool value)
 240 {
 241         modes[m-65] = value;
 242 }
 243
 244 const char* userrec::FormatModes()
 245 {
 246         static char data[MAXBUF];
 247         int offset = 0;
 248         for (int n = 0; n < 64; n++)
 249         {
 250                 if (modes[n])
 251                         data[offset++] = n+65;
 252         }
 253         data[offset] = 0;
 254         return data;
 255 }
 256
 257 userrec::userrec(InspIRCd* Instance) : ServerInstance(Instance)
 258 {
 259         log(DEBUG,"userrec::userrec(): Instance: %08x",ServerInstance);
 260         // the PROPER way to do it, AVOID bzero at *ALL* costs
 261         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = 0;
 262         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 263         reset_due = TIME;
 264         lines_in = fd = lastping = signon = idle_lastmsg = nping = registered = 0;
 265         timeout = flood = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 266         haspassed = dns_done = false;
 267         recvq = "";
 268         sendq = "";
 269         WriteError = "";
 270         res_forward = res_reverse = NULL;
 271         ip = NULL;
 272         chans.clear();
 273         invites.clear();
 274         chans.resize(MAXCHANS);
 275         memset(modes,0,sizeof(modes));
 276
 277         for (unsigned int n = 0; n < MAXCHANS; n++)
 278         {
 279                 ucrec* x = new ucrec();
 280                 chans[n] = x;
 281                 x->channel = NULL;
 282                 x->uc_modes = 0;
 283         }
 284 }
 285
 286 userrec::~userrec()
 287 {
 288         for (std::vector<ucrec*>::iterator n = chans.begin(); n != chans.end(); n++)
 289         {
 290                 ucrec* x = (ucrec*)*n;
 291                 delete x;
 292         }
 293
 294         if (ip)
 295         {
 296                 if (this->GetProtocolFamily() == AF_INET)
 297                 {
 298                         delete (sockaddr_in*)ip;
 299                 }
 300 #ifdef SUPPORT_IP6LINKS
 301                 else
 302                 {
 303                         delete (sockaddr_in6*)ip;
 304                 }
 305 #endif
 306         }
 307 }
 308
 309 /* XXX - minor point, other *Host functions return a char *, this one creates it. Might be nice to be consistant? */
 310 void userrec::MakeHost(char* nhost)
 311 {
 312         /* This is much faster than snprintf */
 313         char* t = nhost;
 314         for(char* n = ident; *n; n++)
 315                 *t++ = *n;
 316         *t++ = '@';
 317         for(char* n = host; *n; n++)
 318                 *t++ = *n;
 319         *t = 0;
 320 }
 321
 322 void userrec::CloseSocket()
 323 {
 324         shutdown(this->fd,2);
 325         close(this->fd);
 326 }
 327
 328 char* userrec::GetFullHost()
 329 {
 330         static char result[MAXBUF];
 331         char* t = result;
 332         for(char* n = nick; *n; n++)
 333                 *t++ = *n;
 334         *t++ = '!';
 335         for(char* n = ident; *n; n++)
 336                 *t++ = *n;
 337         *t++ = '@';
 338         for(char* n = dhost; *n; n++)
 339                 *t++ = *n;
 340         *t = 0;
 341         return result;
 342 }
 343
 344 char* userrec::MakeWildHost()
 345 {
 346         static char nresult[MAXBUF];
 347         char* t = nresult;
 348         *t++ = '*';     *t++ = '!';
 349         *t++ = '*';     *t++ = '@';
 350         for(char* n = dhost; *n; n++)
 351                 *t++ = *n;
 352         *t = 0;
 353         return nresult;
 354 }
 355
 356 int userrec::ReadData(void* buffer, size_t size)
 357 {
 358         if (this->fd > -1)
 359         {
 360                 return read(this->fd, buffer, size);
 361         }
 362         else
 363                 return 0;
 364 }
 365
 366
 367 char* userrec::GetFullRealHost()
 368 {
 369         static char fresult[MAXBUF];
 370         char* t = fresult;
 371         for(char* n = nick; *n; n++)
 372                 *t++ = *n;
 373         *t++ = '!';
 374         for(char* n = ident; *n; n++)
 375                 *t++ = *n;
 376         *t++ = '@';
 377         for(char* n = host; *n; n++)
 378                 *t++ = *n;
 379         *t = 0;
 380         return fresult;
 381 }
 382
 383 bool userrec::IsInvited(irc::string &channel)
 384 {
 385         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 386         {
 387                 irc::string compare = i->channel;
 388
 389                 if (compare == channel)
 390                 {
 391                         return true;
 392                 }
 393         }
 394         return false;
 395 }
 396
 397 InvitedList* userrec::GetInviteList()
 398 {
 399         return &invites;
 400 }
 401
 402 void userrec::InviteTo(irc::string &channel)
 403 {
 404         Invited i;
 405         i.channel = channel;
 406         invites.push_back(i);
 407 }
 408
 409 void userrec::RemoveInvite(irc::string &channel)
 410 {
 411         log(DEBUG,"Removing invites");
 412
 413         if (invites.size())
 414         {
 415                 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 416                 {
 417                         irc::string compare = i->channel;
 418
 419                         if (compare == channel)
 420                         {
 421                                 invites.erase(i);
 422                                 return;
 423                         }
 424                 }
 425         }
 426 }
 427
 428 bool userrec::HasPermission(const std::string &command)
 429 {
 430         char* mycmd;
 431         char* savept;
 432         char* savept2;
 433
 434         /*
 435          * users on remote servers can completely bypass all permissions based checks.
 436          * This prevents desyncs when one server has different type/class tags to another.
 437          * That having been said, this does open things up to the possibility of source changes
 438          * allowing remote kills, etc - but if they have access to the src, they most likely have
 439          * access to the conf - so it's an end to a means either way.
 440          */
 441         if (!IS_LOCAL(this))
 442                 return true;
 443
 444         // are they even an oper at all?
 445         if (*this->oper)
 446         {
 447                 opertype_t::iterator iter_opertype = opertypes.find(this->oper);
 448                 if (iter_opertype != opertypes.end())
 449                 {
 450                         char* Classes = strdup(iter_opertype->second);
 451                         char* myclass = strtok_r(Classes," ",&savept);
 452                         while (myclass)
 453                         {
 454                                 operclass_t::iterator iter_operclass = operclass.find(myclass);
 455                                 if (iter_operclass != operclass.end())
 456                                 {
 457                                         char* CommandList = strdup(iter_operclass->second);
 458                                         mycmd = strtok_r(CommandList," ",&savept2);
 459                                         while (mycmd)
 460                                         {
 461                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 462                                                 {
 463                                                         free(Classes);
 464                                                         free(CommandList);
 465                                                         return true;
 466                                                 }
 467                                                 mycmd = strtok_r(NULL," ",&savept2);
 468                                         }
 469                                         free(CommandList);
 470                                 }
 471                                 myclass = strtok_r(NULL," ",&savept);
 472                         }
 473                         free(Classes);
 474                 }
 475         }
 476         return false;
 477 }
 478
 479
 480 bool userrec::AddBuffer(const std::string &a)
 481 {
 482         std::string b = "";
 483
 484         /* NB: std::string is arsey about \r and \n and tries to translate them
 485          * somehow, so we CANNOT use std::string::find() here :(
 486          */
 487         for (std::string::const_iterator i = a.begin(); i != a.end(); i++)
 488         {
 489                 if (*i != '\r')
 490                         b += *i;
 491         }
 492
 493         if (b.length())
 494                 recvq.append(b);
 495
 496         if (recvq.length() > (unsigned)this->recvqmax)
 497         {
 498                 this->SetWriteError("RecvQ exceeded");
 499                 ServerInstance->WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 500                 return false;
 501         }
 502
 503         return true;
 504 }
 505
 506 bool userrec::BufferIsReady()
 507 {
 508         return (recvq.find('\n') != std::string::npos);
 509 }
 510
 511 void userrec::ClearBuffer()
 512 {
 513         recvq = "";
 514 }
 515
 516 std::string userrec::GetBuffer()
 517 {
 518         if (!recvq.length())
 519                 return "";
 520
 521         /* Strip any leading \r or \n off the string.
 522          * Usually there are only one or two of these,
 523          * so its is computationally cheap to do.
 524          */
 525         while ((*recvq.begin() == '\r') || (*recvq.begin() == '\n'))
 526                 recvq.erase(recvq.begin());
 527
 528         for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 529         {
 530                 /* Find the first complete line, return it as the
 531                  * result, and leave the recvq as whats left
 532                  */
 533                 if (*x == '\n')
 534                 {
 535                         std::string ret = std::string(recvq.begin(), x);
 536                         recvq.erase(recvq.begin(), x + 1);
 537                         return ret;
 538                 }
 539         }
 540         return "";
 541 }
 542
 543 void userrec::AddWriteBuf(const std::string &data)
 544 {
 545         if (*this->GetWriteError())
 546                 return;
 547
 548         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 549         {
 550                 /*
 551                  * Fix by brain - Set the error text BEFORE calling writeopers, because
 552                  * if we dont it'll recursively  call here over and over again trying
 553                  * to repeatedly add the text to the sendq!
 554                  */
 555                 this->SetWriteError("SendQ exceeded");
 556                 ServerInstance->WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 557                 return;
 558         }
 559
 560         if (data.length() > 512)
 561         {
 562                 std::string newdata(data);
 563                 newdata.resize(510);
 564                 newdata.append("\r\n");
 565                 sendq.append(newdata);
 566         }
 567         else
 568         {
 569                 sendq.append(data);
 570         }
 571 }
 572
 573 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 574 void userrec::FlushWriteBuf()
 575 {
 576         if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 577         {
 578                 const char* tb = this->sendq.c_str();
 579                 int n_sent = write(this->fd,tb,this->sendq.length());
 580                 if (n_sent == -1)
 581                 {
 582                         if (errno != EAGAIN)
 583                                 this->SetWriteError(strerror(errno));
 584                 }
 585                 else
 586                 {
 587                         // advance the queue
 588                         tb += n_sent;
 589                         this->sendq = tb;
 590                         // update the user's stats counters
 591                         this->bytes_out += n_sent;
 592                         this->cmds_out++;
 593                 }
 594         }
 595 }
 596
 597 void userrec::SetWriteError(const std::string &error)
 598 {
 599         log(DEBUG,"SetWriteError: %s",error.c_str());
 600         // don't try to set the error twice, its already set take the first string.
 601         if (!this->WriteError.length())
 602         {
 603                 log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 604                 this->WriteError = error;
 605         }
 606 }
 607
 608 const char* userrec::GetWriteError()
 609 {
 610         return this->WriteError.c_str();
 611 }
 612
 613 void userrec::Oper(const std::string &opertype)
 614 {
 615         this->modes[UM_OPERATOR] = 1;
 616         this->WriteServ("MODE %s :+o", this->nick);
 617         FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 618         log(DEFAULT,"OPER: %s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 619         strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 620         all_opers.push_back(this);
 621         FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype));
 622 }
 623
 624 void userrec::UnOper()
 625 {
 626         if (*this->oper)
 627         {
 628                 *this->oper = 0;
 629                 this->modes[UM_OPERATOR] = 0;
 630                 for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
 631                 {
 632                         if (*a == this)
 633                         {
 634                                 log(DEBUG,"Oper removed from optimization list");
 635                                 all_opers.erase(a);
 636                                 return;
 637                         }
 638                 }
 639         }
 640 }
 641
 642 void userrec::QuitUser(InspIRCd* Instance, userrec *user,const std::string &quitreason)
 643 {
 644         user_hash::iterator iter = Instance->clientlist.find(user->nick);
 645
 646 /*
 647  * I'm pretty sure returning here is causing a desync when part of the net thinks a user is gone,
 648  * and another part doesn't. We want to broadcast the quit/kill before bailing so the net stays in sync.
 649  *
 650  * I can't imagine this blowing up, so I'm commenting it out. We still check
 651  * before playing with a bad iterator below in our if(). DISCUSS THIS BEFORE YOU DO ANYTHING. --w00t
 652  *
 653  *      if (iter == clientlist.end())
 654  *              return;
 655  */
 656         std::string reason = quitreason;
 657
 658         if (reason.length() > MAXQUIT - 1)
 659                 reason.resize(MAXQUIT - 1);
 660
 661         if (IS_LOCAL(user))
 662                 user->Write("ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason.c_str());
 663
 664         if (user->registered == REG_ALL)
 665         {
 666                 user->PurgeEmptyChannels();
 667                 FOREACH_MOD_I(Instance,I_OnUserQuit,OnUserQuit(user,reason));
 668                 user->WriteCommonExcept("QUIT :%s",reason.c_str());
 669         }
 670
 671         if (IS_LOCAL(user))
 672                 user->FlushWriteBuf();
 673
 674         FOREACH_MOD_I(Instance,I_OnUserDisconnect,OnUserDisconnect(user));
 675
 676         if (IS_LOCAL(user))
 677         {
 678                 if (Instance->Config->GetIOHook(user->GetPort()))
 679                 {
 680                         try
 681                         {
 682                                 Instance->Config->GetIOHook(user->GetPort())->OnRawSocketClose(user->fd);
 683                         }
 684                         catch (ModuleException& modexcept)
 685                         {
 686                                 log(DEBUG,"Module exception cought: %s",modexcept.GetReason());
 687                         }
 688                 }
 689
 690                 Instance->SE->DelFd(user->fd);
 691                 user->CloseSocket();
 692         }
 693
 694         /*
 695          * this must come before the ServerInstance->WriteOpers so that it doesnt try to fill their buffer with anything
 696          * if they were an oper with +s.
 697          *
 698          * XXX -
 699          * In the current implementation, we only show local quits, as we only show local connects. With
 700          * the proposed implmentation of snomasks however, this will likely change in the (near?) future.
 701          */
 702         if (user->registered == REG_ALL)
 703         {
 704                 if (IS_LOCAL(user))
 705                         Instance->WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason.c_str());
 706                 user->AddToWhoWas();
 707         }
 708
 709         if (iter != Instance->clientlist.end())
 710         {
 711                 log(DEBUG,"deleting user hash value %lx",(unsigned long)user);
 712                 if (IS_LOCAL(user))
 713                 {
 714                         Instance->fd_ref_table[user->fd] = NULL;
 715                         if (find(Instance->local_users.begin(),Instance->local_users.end(),user) != Instance->local_users.end())
 716                                 Instance->local_users.erase(find(Instance->local_users.begin(),Instance->local_users.end(),user));
 717                 }
 718                 Instance->clientlist.erase(iter);
 719                 DELETE(user);
 720         }
 721 }
 722
 723 namespace irc
 724 {
 725         namespace whowas
 726         {
 727
 728                 WhoWasGroup::WhoWasGroup(userrec* user) : host(NULL), dhost(NULL), ident(NULL), server(NULL), gecos(NULL), signon(user->signon)
 729                 {
 730                         this->host = strdup(user->host);
 731                         this->dhost = strdup(user->dhost);
 732                         this->ident = strdup(user->ident);
 733                         this->server = user->server;
 734                         this->gecos = strdup(user->fullname);
 735                 }
 736
 737                 WhoWasGroup::~WhoWasGroup()
 738                 {
 739                         if (host)
 740                                 free(host);
 741                         if (dhost)
 742                                 free(dhost);
 743                         if (ident)
 744                                 free(ident);
 745                         if (gecos)
 746                                 free(gecos);
 747                 }
 748
 749                 /* every hour, run this function which removes all entries over 3 days */
 750                 void MaintainWhoWas(time_t TIME)
 751                 {
 752                         for (whowas_users::iterator iter = ::whowas.begin(); iter != ::whowas.end(); iter++)
 753                         {
 754                                 whowas_set* n = (whowas_set*)iter->second;
 755                                 if (n->size())
 756                                 {
 757                                         while ((n->begin() != n->end()) && ((*n->begin())->signon < TIME - 259200)) // 3 days
 758                                         {
 759                                                 WhoWasGroup *a = *(n->begin());
 760                                                 DELETE(a);
 761                                                 n->erase(n->begin());
 762                                         }
 763                                 }
 764                         }
 765                 }
 766         };
 767 };
 768
 769 /* adds or updates an entry in the whowas list */
 770 void userrec::AddToWhoWas()
 771 {
 772         irc::whowas::whowas_users::iterator iter = whowas.find(this->nick);
 773
 774         if (iter == whowas.end())
 775         {
 776                 irc::whowas::whowas_set* n = new irc::whowas::whowas_set;
 777                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 778                 n->push_back(a);
 779                 whowas[this->nick] = n;
 780         }
 781         else
 782         {
 783                 irc::whowas::whowas_set* group = (irc::whowas::whowas_set*)iter->second;
 784
 785                 if (group->size() > 10)
 786                 {
 787                         irc::whowas::WhoWasGroup *a = (irc::whowas::WhoWasGroup*)*(group->begin());
 788                         DELETE(a);
 789                         group->pop_front();
 790                 }
 791
 792                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 793                 group->push_back(a);
 794         }
 795 }
 796
 797 /* add a client connection to the sockets list */
 798 void userrec::AddClient(InspIRCd* Instance, int socket, int port, bool iscached, insp_inaddr ip)
 799 {
 800         std::string tempnick = ConvToStr(socket) + "-unknown";
 801         user_hash::iterator iter = Instance->clientlist.find(tempnick);
 802         const char *ipaddr = insp_ntoa(ip);
 803         userrec* _new;
 804         int j = 0;
 805
 806         /*
 807          * fix by brain.
 808          * as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 809          * using one as a registered connection. As they are per fd, we can also safely assume
 810          * that we wont have collisions. Therefore, if the nick exists in the list, its only
 811          * used by a dead socket, erase the iterator so that the new client may reclaim it.
 812          * this was probably the cause of 'server ignores me when i hammer it with reconnects'
 813          * issue in earlier alphas/betas
 814          */
 815         if (iter != Instance->clientlist.end())
 816         {
 817                 userrec* goner = iter->second;
 818                 DELETE(goner);
 819                 Instance->clientlist.erase(iter);
 820         }
 821
 822         log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr);
 823
 824         _new = new userrec(Instance);
 825         Instance->clientlist[tempnick] = _new;
 826         _new->fd = socket;
 827         strlcpy(_new->nick,tempnick.c_str(),NICKMAX-1);
 828
 829         _new->server = Instance->FindServerNamePtr(Instance->Config->ServerName);
 830         /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
 831         strcpy(_new->ident, "unknown");
 832
 833         _new->registered = REG_NONE;
 834         _new->signon = TIME + Instance->Config->dns_timeout;
 835         _new->lastping = 1;
 836
 837         log(DEBUG,"Setting socket addresses");
 838         _new->SetSockAddr(AF_FAMILY, ipaddr, port);
 839         log(DEBUG,"Socket addresses set.");
 840
 841         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
 842         for (const char* temp = _new->GetIPString(); *temp && j < 64; temp++, j++)
 843                 _new->dhost[j] = _new->host[j] = *temp;
 844         _new->dhost[j] = _new->host[j] = 0;
 845
 846         // set the registration timeout for this user
 847         unsigned long class_regtimeout = 90;
 848         int class_flood = 0;
 849         long class_threshold = 5;
 850         long class_sqmax = 262144;      // 256kb
 851         long class_rqmax = 4096;        // 4k
 852
 853         for (ClassVector::iterator i = Instance->Config->Classes.begin(); i != Instance->Config->Classes.end(); i++)
 854         {
 855                 if ((i->type == CC_ALLOW) && (match(ipaddr,i->host.c_str(),true)))
 856                 {
 857                         class_regtimeout = (unsigned long)i->registration_timeout;
 858                         class_flood = i->flood;
 859                         _new->pingmax = i->pingtime;
 860                         class_threshold = i->threshold;
 861                         class_sqmax = i->sendqmax;
 862                         class_rqmax = i->recvqmax;
 863                         break;
 864                 }
 865         }
 866
 867         _new->nping = TIME + _new->pingmax + Instance->Config->dns_timeout;
 868         _new->timeout = TIME+class_regtimeout;
 869         _new->flood = class_flood;
 870         _new->threshold = class_threshold;
 871         _new->sendqmax = class_sqmax;
 872         _new->recvqmax = class_rqmax;
 873
 874         Instance->fd_ref_table[socket] = _new;
 875         Instance->local_users.push_back(_new);
 876
 877         if (Instance->local_users.size() > Instance->Config->SoftLimit)
 878         {
 879                 userrec::QuitUser(Instance, _new,"No more connections allowed");
 880                 return;
 881         }
 882
 883         if (Instance->local_users.size() >= MAXCLIENTS)
 884         {
 885                 userrec::QuitUser(Instance, _new,"No more connections allowed");
 886                 return;
 887         }
 888
 889         /*
 890          * XXX -
 891          * this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 892          * its a pretty big but for the moment valid assumption:
 893          * file descriptors are handed out starting at 0, and are recycled as theyre freed.
 894          * therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 895          * irc server at once (or the irc server otherwise initiating this many connections, files etc)
 896          * which for the time being is a physical impossibility (even the largest networks dont have more
 897          * than about 10,000 users on ONE server!)
 898          */
 899         if ((unsigned)socket >= MAX_DESCRIPTORS)
 900         {
 901                 userrec::QuitUser(Instance, _new,"Server is full");
 902                 return;
 903         }
 904         char* e = matches_exception(ipaddr);
 905         if (!e)
 906         {
 907                 char* r = matches_zline(ipaddr);
 908                 if (r)
 909                 {
 910                         char reason[MAXBUF];
 911                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
 912                         userrec::QuitUser(Instance, _new,reason);
 913                         return;
 914                 }
 915         }
 916
 917         if (socket > -1)
 918         {
 919                 if (!Instance->SE->AddFd(socket,true,X_ESTAB_CLIENT))
 920                 {
 921                         userrec::QuitUser(Instance, _new, "Internal error handling connection");
 922                         return;
 923                 }
 924         }
 925
 926         _new->WriteServ("NOTICE Auth :*** Looking up your hostname...");
 927 }
 928
 929 long userrec::GlobalCloneCount()
 930 {
 931         char u1[1024];
 932         char u2[1024];
 933         long x = 0;
 934         for (user_hash::const_iterator a = ServerInstance->clientlist.begin(); a != ServerInstance->clientlist.end(); a++)
 935         {
 936                 /* We have to match ip's as strings - we don't know what protocol
 937                  * a remote user may be using
 938                  */
 939                 if (!strcasecmp(a->second->GetIPString(u1), this->GetIPString(u2)))
 940                                 x++;
 941         }
 942         return x;
 943 }
 944
 945 long userrec::LocalCloneCount()
 946 {
 947         long x = 0;
 948         for (std::vector<userrec*>::const_iterator a = ServerInstance->local_users.begin(); a != ServerInstance->local_users.end(); a++)
 949         {
 950                 userrec* comp = *a;
 951 #ifdef IPV6
 952                 /* I dont think theres any faster way of matching two ipv6 addresses than memcmp */
 953                 in6_addr* s1 = &(((sockaddr_in6*)comp->ip)->sin6_addr);
 954                 in6_addr* s2 = &(((sockaddr_in6*)this->ip)->sin6_addr);
 955                 if (!memcmp(s1->s6_addr, s2->s6_addr, sizeof(in6_addr)))
 956                         x++;
 957 #else
 958                 in_addr* s1 = &((sockaddr_in*)comp->ip)->sin_addr;
 959                 in_addr* s2 = &((sockaddr_in*)this->ip)->sin_addr;
 960                 if (s1->s_addr == s2->s_addr)
 961                         x++;
 962 #endif
 963         }
 964         return x;
 965 }
 966
 967 void userrec::FullConnect(CullList* Goners)
 968 {
 969         ServerInstance->stats->statsConnects++;
 970         this->idle_lastmsg = TIME;
 971
 972         ConnectClass a = this->GetClass();
 973
 974         if (a.type == CC_DENY)
 975         {
 976                 Goners->AddItem(this,"Unauthorised connection");
 977                 return;
 978         }
 979
 980         if ((*(a.pass.c_str())) && (!this->haspassed))
 981         {
 982                 Goners->AddItem(this,"Invalid password");
 983                 return;
 984         }
 985
 986         if (this->LocalCloneCount() > a.maxlocal)
 987         {
 988                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (local)");
 989                 ServerInstance->WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a.maxlocal, this->GetIPString());
 990                 return;
 991         }
 992         else if (this->GlobalCloneCount() > a.maxglobal)
 993         {
 994                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (global)");
 995                 ServerInstance->WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a.maxglobal, this->GetIPString());
 996                 return;
 997         }
 998
 999         char match_against[MAXBUF];
1000         snprintf(match_against,MAXBUF,"%s@%s", this->ident, this->host);
1001         char* e = matches_exception(match_against);
1002
1003         if (!e)
1004         {
1005                 char* r = matches_gline(match_against);
1006
1007                 if (r)
1008                 {
1009                         char reason[MAXBUF];
1010                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
1011                         Goners->AddItem(this, reason);
1012                         return;
1013                 }
1014
1015                 r = matches_kline(match_against);
1016
1017                 if (r)
1018                 {
1019                         char reason[MAXBUF];
1020                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
1021                         Goners->AddItem(this, reason);
1022                         return;
1023                 }
1024         }
1025
1026
1027         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
1028         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
1029         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
1030         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
1031         this->WriteServ("004 %s %s %s %s %s %s", this->nick, ServerInstance->Config->ServerName, VERSION, ServerInstance->ModeGrok->UserModeList().c_str(), ServerInstance->ModeGrok->ChannelModeList().c_str(), ServerInstance->ModeGrok->ParaModeList().c_str());
1032
1033         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
1034         // so i'd better split it :)
1035         std::stringstream out(ServerInstance->Config->data005);
1036         std::string token = "";
1037         std::string line5 = "";
1038         int token_counter = 0;
1039
1040         while (!out.eof())
1041         {
1042                 out >> token;
1043                 line5 = line5 + token + " ";
1044                 token_counter++;
1045
1046                 if ((token_counter >= 13) || (out.eof() == true))
1047                 {
1048                         this->WriteServ("005 %s %s:are supported by this server", this->nick, line5.c_str());
1049                         line5 = "";
1050                         token_counter = 0;
1051                 }
1052         }
1053
1054         ShowMOTD(this);
1055
1056         /*
1057          * fix 3 by brain, move registered = 7 below these so that spurious modes and host
1058          * changes dont go out onto the network and produce 'fake direction'.
1059          */
1060         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
1061         FOREACH_MOD(I_OnGlobalConnect,OnGlobalConnect(this));
1062         this->registered = REG_ALL;
1063         ServerInstance->WriteOpers("*** Client connecting on port %d: %s!%s@%s [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString());
1064 }
1065
1066 /** userrec::UpdateNick()
1067  * re-allocates a nick in the user_hash after they change nicknames,
1068  * returns a pointer to the new user as it may have moved
1069  */
1070 userrec* userrec::UpdateNickHash(const char* New)
1071 {
1072         //user_hash::iterator newnick;
1073         user_hash::iterator oldnick = ServerInstance->clientlist.find(this->nick);
1074
1075         if (!strcasecmp(this->nick,New))
1076                 return oldnick->second;
1077
1078         if (oldnick == ServerInstance->clientlist.end())
1079                 return NULL; /* doesnt exist */
1080
1081         userrec* olduser = oldnick->second;
1082         ServerInstance->clientlist[New] = olduser;
1083         ServerInstance->clientlist.erase(oldnick);
1084         return ServerInstance->clientlist[New];
1085 }
1086
1087 bool userrec::ForceNickChange(const char* newnick)
1088 {
1089         char nick[MAXBUF];
1090         int MOD_RESULT = 0;
1091
1092         *nick = 0;
1093
1094         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1095
1096         if (MOD_RESULT)
1097         {
1098                 ServerInstance->stats->statsCollisions++;
1099                 return false;
1100         }
1101
1102         if (matches_qline(newnick))
1103         {
1104                 ServerInstance->stats->statsCollisions++;
1105                 return false;
1106         }
1107
1108         if (newnick)
1109         {
1110                 strlcpy(this->nick, newnick, NICKMAX - 1);
1111         }
1112         if (this->registered == REG_ALL)
1113         {
1114                 const char* pars[1];
1115                 pars[0] = nick;
1116                 std::string cmd = "NICK";
1117                 ServerInstance->Parser->CallHandler(cmd, pars, 1, this);
1118         }
1119         return true;
1120 }
1121
1122 void userrec::SetSockAddr(int protocol_family, const char* ip, int port)
1123 {
1124         switch (protocol_family)
1125         {
1126 #ifdef SUPPORT_IP6LINKS
1127                 case AF_INET6:
1128                 {
1129                         log(DEBUG,"Set inet6 protocol address");
1130                         sockaddr_in6* sin = new sockaddr_in6;
1131                         sin->sin6_family = AF_INET6;
1132                         sin->sin6_port = port;
1133                         inet_pton(AF_INET6, ip, &sin->sin6_addr);
1134                         this->ip = (sockaddr*)sin;
1135                 }
1136                 break;
1137 #endif
1138                 case AF_INET:
1139                 {
1140                         log(DEBUG,"Set inet4 protocol address");
1141                         sockaddr_in* sin = new sockaddr_in;
1142                         sin->sin_family = AF_INET;
1143                         sin->sin_port = port;
1144                         inet_pton(AF_INET, ip, &sin->sin_addr);
1145                         this->ip = (sockaddr*)sin;
1146                 }
1147                 break;
1148                 default:
1149                         log(DEBUG,"Ut oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1150                 break;
1151         }
1152 }
1153
1154 int userrec::GetPort()
1155 {
1156         if (this->ip == NULL)
1157                 return 0;
1158
1159         switch (this->GetProtocolFamily())
1160         {
1161 #ifdef SUPPORT_IP6LINKS
1162                 case AF_INET6:
1163                 {
1164                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1165                         return sin->sin6_port;
1166                 }
1167                 break;
1168 #endif
1169                 case AF_INET:
1170                 {
1171                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1172                         return sin->sin_port;
1173                 }
1174                 break;
1175                 default:
1176                         log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1177                 break;
1178         }
1179         return 0;
1180 }
1181
1182 int userrec::GetProtocolFamily()
1183 {
1184         if (this->ip == NULL)
1185                 return 0;
1186
1187         sockaddr_in* sin = (sockaddr_in*)this->ip;
1188         return sin->sin_family;
1189 }
1190
1191 const char* userrec::GetIPString()
1192 {
1193         static char buf[1024];
1194         static char temp[1024];
1195
1196         if (this->ip == NULL)
1197                 return "";
1198
1199         switch (this->GetProtocolFamily())
1200         {
1201 #ifdef SUPPORT_IP6LINKS
1202                 case AF_INET6:
1203                 {
1204                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1205                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1206                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1207                         if (*buf == ':')
1208                         {
1209                                 strlcpy(&temp[1], buf, sizeof(temp));
1210                                 *temp = '0';
1211                                 return temp;
1212                         }
1213                         return buf;
1214                 }
1215                 break;
1216 #endif
1217                 case AF_INET:
1218                 {
1219                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1220                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1221                         return buf;
1222                 }
1223                 break;
1224                 default:
1225                         log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1226                 break;
1227         }
1228         return "";
1229 }
1230
1231 const char* userrec::GetIPString(char* buf)
1232 {
1233         static char temp[1024];
1234
1235         if (this->ip == NULL)
1236         {
1237                 *buf = 0;
1238                 return buf;
1239         }
1240
1241         switch (this->GetProtocolFamily())
1242         {
1243 #ifdef SUPPORT_IP6LINKS
1244                 case AF_INET6:
1245                 {
1246                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1247                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1248                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1249                         if (*buf == ':')
1250                         {
1251                                 strlcpy(&temp[1], buf, sizeof(temp));
1252                                 *temp = '0';
1253                                 strlcpy(buf, temp, sizeof(temp));
1254                         }
1255                         return buf;
1256                 }
1257                 break;
1258 #endif
1259                 case AF_INET:
1260                 {
1261                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1262                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1263                         return buf;
1264                 }
1265                 break;
1266
1267                 default:
1268                         log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1269                 break;
1270         }
1271         return "";
1272 }
1273
1274
1275 void userrec::Write(const std::string &text)
1276 {
1277         if ((this->fd < 0) || (this->fd > MAX_DESCRIPTORS))
1278                 return;
1279
1280         std::string crlf = text;
1281         crlf.append("\r\n");
1282
1283         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1284         {
1285                 try
1286                 {
1287                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, crlf.data(), crlf.length());
1288                 }
1289                 catch (ModuleException& modexcept)
1290                 {
1291                         log(DEBUG,"Module exception caught: %s",modexcept.GetReason());
1292                 }
1293         }
1294         else
1295         {
1296                 this->AddWriteBuf(crlf);
1297         }
1298         ServerInstance->stats->statsSent += crlf.length();
1299 }
1300
1301 /** Write()
1302  */
1303 void userrec::Write(const char *text, ...)
1304 {
1305         va_list argsPtr;
1306         char textbuffer[MAXBUF];
1307
1308         va_start(argsPtr, text);
1309         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1310         va_end(argsPtr);
1311
1312         this->Write(std::string(textbuffer));
1313 }
1314
1315 void userrec::WriteServ(const std::string& text)
1316 {
1317         char textbuffer[MAXBUF];
1318
1319         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1320         this->Write(std::string(textbuffer));
1321 }
1322
1323 /** WriteServ()
1324  *  Same as Write(), except `text' is prefixed with `:server.name '.
1325  */
1326 void userrec::WriteServ(const char* text, ...)
1327 {
1328         va_list argsPtr;
1329         char textbuffer[MAXBUF];
1330
1331         va_start(argsPtr, text);
1332         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1333         va_end(argsPtr);
1334
1335         this->WriteServ(std::string(textbuffer));
1336 }
1337
1338
1339 void userrec::WriteFrom(userrec *user, const std::string &text)
1340 {
1341         char tb[MAXBUF];
1342
1343         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1344
1345         this->Write(std::string(tb));
1346 }
1347
1348
1349 /* write text from an originating user to originating user */
1350
1351 void userrec::WriteFrom(userrec *user, const char* text, ...)
1352 {
1353         va_list argsPtr;
1354         char textbuffer[MAXBUF];
1355
1356         va_start(argsPtr, text);
1357         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1358         va_end(argsPtr);
1359
1360         this->WriteFrom(user, std::string(textbuffer));
1361 }
1362
1363
1364 /* write text to an destination user from a source user (e.g. user privmsg) */
1365
1366 void userrec::WriteTo(userrec *dest, const char *data, ...)
1367 {
1368         char textbuffer[MAXBUF];
1369         va_list argsPtr;
1370
1371         va_start(argsPtr, data);
1372         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1373         va_end(argsPtr);
1374
1375         this->WriteTo(dest, std::string(textbuffer));
1376 }
1377
1378 void userrec::WriteTo(userrec *dest, const std::string &data)
1379 {
1380         dest->WriteFrom(this, data);
1381 }
1382
1383
1384 void userrec::WriteCommon(const char* text, ...)
1385 {
1386         char textbuffer[MAXBUF];
1387         va_list argsPtr;
1388
1389         if (this->registered != REG_ALL)
1390                 return;
1391
1392         va_start(argsPtr, text);
1393         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1394         va_end(argsPtr);
1395
1396         this->WriteCommon(std::string(textbuffer));
1397 }
1398
1399 void userrec::WriteCommon(const std::string &text)
1400 {
1401         bool sent_to_at_least_one = false;
1402
1403         if (this->registered != REG_ALL)
1404                 return;
1405
1406         uniq_id++;
1407
1408         for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1409         {
1410                 ucrec *n = *v;
1411                 if (n->channel)
1412                 {
1413                         CUList *ulist= n->channel->GetUsers();
1414
1415                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1416                         {
1417                                 if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1418                                 {
1419                                         already_sent[i->second->fd] = uniq_id;
1420                                         i->second->WriteFrom(this, std::string(text));
1421                                         sent_to_at_least_one = true;
1422                                 }
1423                         }
1424                 }
1425         }
1426
1427         /*
1428          * if the user was not in any channels, no users will receive the text. Make sure the user
1429          * receives their OWN message for WriteCommon
1430          */
1431         if (!sent_to_at_least_one)
1432         {
1433                 this->WriteFrom(this,std::string(text));
1434         }
1435 }
1436
1437
1438 /* write a formatted string to all users who share at least one common
1439  * channel, NOT including the source user e.g. for use in QUIT
1440  */
1441
1442 void userrec::WriteCommonExcept(const char* text, ...)
1443 {
1444         char textbuffer[MAXBUF];
1445         va_list argsPtr;
1446
1447         va_start(argsPtr, text);
1448         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1449         va_end(argsPtr);
1450
1451         this->WriteCommonExcept(std::string(textbuffer));
1452 }
1453
1454 void userrec::WriteCommonExcept(const std::string &text)
1455 {
1456         bool quit_munge = true;
1457         char oper_quit[MAXBUF];
1458         char textbuffer[MAXBUF];
1459
1460         strlcpy(textbuffer, text.c_str(), MAXBUF);
1461
1462         if (this->registered != REG_ALL)
1463                 return;
1464
1465         uniq_id++;
1466
1467         /* TODO: We need some form of WriteCommonExcept that will send two lines, one line to
1468          * opers and the other line to non-opers, then all this hidebans and hidesplits gunk
1469          * can go byebye.
1470          */
1471         if (ServerInstance->Config->HideSplits)
1472         {
1473                 char* check = textbuffer + 6;
1474
1475                 if (!strncasecmp(textbuffer, "QUIT :",6))
1476                 {
1477                         std::stringstream split(check);
1478                         std::string server_one;
1479                         std::string server_two;
1480
1481                         split >> server_one;
1482                         split >> server_two;
1483
1484                         if ((ServerInstance->FindServerName(server_one)) && (ServerInstance->FindServerName(server_two)))
1485                         {
1486                                 strlcpy(oper_quit,textbuffer,MAXQUIT);
1487                                 strlcpy(check,"*.net *.split",MAXQUIT);
1488                                 quit_munge = true;
1489                         }
1490                 }
1491         }
1492
1493         if ((ServerInstance->Config->HideBans) && (!quit_munge))
1494         {
1495                 if ((!strncasecmp(textbuffer, "QUIT :G-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :K-Lined:",14))
1496                 || (!strncasecmp(textbuffer, "QUIT :Q-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :Z-Lined:",14)))
1497                 {
1498                         char* check = textbuffer + 13;
1499                         strlcpy(oper_quit,textbuffer,MAXQUIT);
1500                         *check = 0;  // We don't need to strlcpy, we just chop it from the :
1501                         quit_munge = true;
1502                 }
1503         }
1504
1505         for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1506         {
1507                 ucrec* n = *v;
1508                 if (n->channel)
1509                 {
1510                         CUList *ulist= n->channel->GetUsers();
1511
1512                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1513                         {
1514                                 if (this != i->second)
1515                                 {
1516                                         if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1517                                         {
1518                                                 already_sent[i->second->fd] = uniq_id;
1519                                                 if (quit_munge)
1520                                                         i->second->WriteFrom(this, *i->second->oper ? std::string(oper_quit) : std::string(textbuffer));
1521                                                 else
1522                                                         i->second->WriteFrom(this, std::string(textbuffer));
1523                                         }
1524                                 }
1525                         }
1526                 }
1527         }
1528
1529 }
1530
1531 void userrec::WriteWallOps(const std::string &text)
1532 {
1533         /* Does nothing if theyre not opered */
1534         if ((!*this->oper) && (IS_LOCAL(this)))
1535                 return;
1536
1537         std::string wallop = "WALLOPS :";
1538         wallop.append(text);
1539
1540         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1541         {
1542                 userrec* t = *i;
1543                 if ((IS_LOCAL(t)) && (t->modes[UM_WALLOPS]))
1544                         this->WriteTo(t,wallop);
1545         }
1546 }
1547
1548 void userrec::WriteWallOps(const char* text, ...)
1549 {
1550         char textbuffer[MAXBUF];
1551         va_list argsPtr;
1552
1553         va_start(argsPtr, text);
1554         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1555         va_end(argsPtr);
1556
1557         this->WriteWallOps(std::string(textbuffer));
1558 }
1559
1560 /* return 0 or 1 depending if users u and u2 share one or more common channels
1561  * (used by QUIT, NICK etc which arent channel specific notices)
1562  *
1563  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1564  * the first users channels then the second users channels within the outer loop,
1565  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1566  * all possible iterations). However this new function instead checks against the
1567  * channel's userlist in the inner loop which is a std::map<userrec*,userrec*>
1568  * and saves us time as we already know what pointer value we are after.
1569  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1570  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1571  */
1572 bool userrec::SharesChannelWith(userrec *other)
1573 {
1574         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1575                 return false;
1576
1577         /* Outer loop */
1578         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1579         {
1580                 /* Fetch the channel from the user */
1581                 ucrec* user_channel = *i;
1582
1583                 if (user_channel->channel)
1584                 {
1585                         /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1586                          * by replacing it with a map::find which *should* be more efficient
1587                          */
1588                         if (user_channel->channel->HasUser(other))
1589                                 return true;
1590                 }
1591         }
1592         return false;
1593 }
1594
1595 int userrec::CountChannels()
1596 {
1597         int z = 0;
1598         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1599                 if ((*i)->channel)
1600                         z++;
1601         return z;
1602 }
1603
1604 bool userrec::ChangeName(const char* gecos)
1605 {
1606         if (IS_LOCAL(this))
1607         {
1608                 int MOD_RESULT = 0;
1609                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1610                 if (MOD_RESULT)
1611                         return false;
1612                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1613         }
1614         strlcpy(this->fullname,gecos,MAXGECOS+1);
1615         return true;
1616 }
1617
1618 bool userrec::ChangeDisplayedHost(const char* host)
1619 {
1620         if (IS_LOCAL(this))
1621         {
1622                 int MOD_RESULT = 0;
1623                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host));
1624                 if (MOD_RESULT)
1625                         return false;
1626                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host));
1627         }
1628         strlcpy(this->dhost,host,63);
1629
1630         if (IS_LOCAL(this))
1631                 this->WriteServ("396 %s %s :is now your hidden host",this->nick,this->dhost);
1632
1633         return true;
1634 }
1635
1636 void userrec::NoticeAll(char* text, ...)
1637 {
1638         char textbuffer[MAXBUF];
1639         char formatbuffer[MAXBUF];
1640         va_list argsPtr;
1641
1642         va_start(argsPtr, text);
1643         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1644         va_end(argsPtr);
1645
1646         snprintf(formatbuffer,MAXBUF,"NOTICE $* :%s",textbuffer);
1647
1648         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1649         {
1650                 userrec* t = *i;
1651                 t->WriteFrom(this, std::string(formatbuffer));
1652         }
1653 }
1654
1655
1656 std::string userrec::ChannelList(userrec* source)
1657 {
1658         std::string list;
1659         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1660         {
1661                 ucrec* rec = *i;
1662
1663                 if(rec->channel && rec->channel->name)
1664                 {
1665                         /* If the target is the same as the sender, let them see all their channels.
1666                          * If the channel is NOT private/secret OR the user shares a common channel
1667                          * If the user is an oper, and the <options:operspywhois> option is set.
1668                          */
1669                         if ((source == this) || (*source->oper && ServerInstance->Config->OperSpyWhois) || (((!rec->channel->modes[CM_PRIVATE]) && (!rec->channel->modes[CM_SECRET])) || (rec->channel->HasUser(source))))
1670                         {
1671                                 list.append(rec->channel->GetStatusChar(this)).append(rec->channel->name).append(" ");
1672                         }
1673                 }
1674         }
1675         return list;
1676 }
1677
1678 void userrec::SplitChanList(userrec* dest, const std::string &cl)
1679 {
1680         std::string line;
1681         std::ostringstream prefix;
1682         std::string::size_type start, pos, length;
1683
1684         prefix << ":" << ServerInstance->Config->ServerName << " 319 " << this->nick << " " << dest->nick << " :";
1685         line = prefix.str();
1686
1687         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1688         {
1689                 length = (pos == std::string::npos) ? cl.length() : pos;
1690
1691                 if (line.length() + length - start > 510)
1692                 {
1693                         this->Write(line);
1694                         line = prefix.str();
1695                 }
1696
1697                 if(pos == std::string::npos)
1698                 {
1699                         line += cl.substr(start, length - start);
1700                         break;
1701                 }
1702                 else
1703                 {
1704                         line += cl.substr(start, length - start + 1);
1705                 }
1706         }
1707
1708         if (line.length())
1709         {
1710                 this->Write(line);
1711         }
1712 }
1713
1714
1715 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1716  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1717  * then their ip will be taken as 'priority' anyway, so for example,
1718  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1719  */
1720 ConnectClass& userrec::GetClass()
1721 {
1722         for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1723         {
1724                 if ((match(this->GetIPString(),i->host.c_str(),true)) || (match(this->host,i->host.c_str())))
1725                         return *i;
1726         }
1727
1728         return *(ServerInstance->Config->Classes.begin());
1729 }
1730
1731 void userrec::PurgeEmptyChannels()
1732 {
1733         std::vector<chanrec*> to_delete;
1734
1735         // firstly decrement the count on each channel
1736         for (std::vector<ucrec*>::iterator f = this->chans.begin(); f != this->chans.end(); f++)
1737         {
1738                 ucrec* uc = *f;
1739                 if (uc->channel)
1740                 {
1741                         if (uc->channel->DelUser(this) == 0)
1742                         {
1743                                 /* No users left in here, mark it for deletion */
1744                                 to_delete.push_back(uc->channel);
1745                                 uc->channel = NULL;
1746                         }
1747                 }
1748         }
1749
1750         for (std::vector<chanrec*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1751         {
1752                 chanrec* thischan = *n;
1753                 chan_hash::iterator i2 = ServerInstance->chanlist.find(thischan->name);
1754                 if (i2 != ServerInstance->chanlist.end())
1755                 {
1756                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1757                         DELETE(i2->second);
1758                         ServerInstance->chanlist.erase(i2);
1759                 }
1760         }
1761
1762         this->UnOper();
1763 }
1764