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 "message.h"
  31 #include "wildcard.h"
  32 #include "xline.h"
  33 #include "cull_list.h"
  34
  35 extern std::vector<Module*> modules;
  36 extern std::vector<ircd_module*> factory;
  37 extern int MODCOUNT;
  38 extern time_t TIME;
  39 extern Server* MyServer;
  40
  41 irc::whowas::whowas_users whowas;
  42 static unsigned long already_sent[MAX_DESCRIPTORS] = {0};
  43 std::vector<userrec*> all_opers;
  44
  45 typedef std::map<irc::string,char*> opertype_t;
  46 typedef opertype_t operclass_t;
  47
  48 opertype_t opertypes;
  49 operclass_t operclass;
  50
  51 /* XXX: Used for speeding up WriteCommon operations */
  52 unsigned long uniq_id = 0;
  53
  54 bool InitTypes(ServerConfig* conf, const char* tag)
  55 {
  56         for (opertype_t::iterator n = opertypes.begin(); n != opertypes.end(); n++)
  57         {
  58                 if (n->second)
  59                         delete[] n->second;
  60         }
  61
  62         opertypes.clear();
  63         return true;
  64 }
  65
  66 bool InitClasses(ServerConfig* conf, const char* tag)
  67 {
  68         for (operclass_t::iterator n = operclass.begin(); n != operclass.end(); n++)
  69         {
  70                 if (n->second)
  71                         delete[] n->second;
  72         }
  73
  74         operclass.clear();
  75         return true;
  76 }
  77
  78 bool DoType(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
  79 {
  80         char* TypeName = (char*)values[0];
  81         char* Classes = (char*)values[1];
  82
  83         opertypes[TypeName] = strdup(Classes);
  84         log(DEBUG,"Read oper TYPE '%s' with classes '%s'",TypeName,Classes);
  85         return true;
  86 }
  87
  88 bool DoClass(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
  89 {
  90         char* ClassName = (char*)values[0];
  91         char* CommandList = (char*)values[1];
  92
  93         operclass[ClassName] = strdup(CommandList);
  94         log(DEBUG,"Read oper CLASS '%s' with commands '%s'",ClassName,CommandList);
  95         return true;
  96 }
  97
  98 bool DoneClassesAndTypes(ServerConfig* conf, const char* tag)
  99 {
 100         return true;
 101 }
 102
 103 bool userrec::ProcessNoticeMasks(const char *sm)
 104 {
 105         bool adding = true;
 106         const char *c = sm;
 107
 108         while (c && *c)
 109         {
 110                 switch (*c)
 111                 {
 112                         case '+':
 113                                 adding = true;
 114                                 break;
 115                         case '-':
 116                                 adding = false;
 117                                 break;
 118                         default:
 119                                 if ((*c >= 'A') && (*c <= 'z'))
 120                                         this->SetNoticeMask(*c, adding);
 121                                 break;
 122                 }
 123
 124                 *c++;
 125         }
 126
 127         return true;
 128 }
 129
 130 void userrec::StartDNSLookup()
 131 {
 132         log(DEBUG,"Commencing reverse lookup");
 133         try
 134         {
 135                 log(DEBUG,"Passing instance: %08x",this->ServerInstance);
 136                 res_reverse = new UserResolver(this->ServerInstance, this, this->GetIPString(), false);
 137                 MyServer->AddResolver(res_reverse);
 138         }
 139         catch (ModuleException& e)
 140         {
 141                 log(DEBUG,"Error in resolver: %s",e.GetReason());
 142         }
 143 }
 144
 145 UserResolver::UserResolver(InspIRCd* Instance, userrec* user, std::string to_resolve, bool forward) :
 146         Resolver(Instance, to_resolve, forward ? DNS_QUERY_FORWARD : DNS_QUERY_REVERSE), bound_user(user)
 147 {
 148         this->fwd = forward;
 149         this->bound_fd = user->fd;
 150 }
 151
 152 void UserResolver::OnLookupComplete(const std::string &result)
 153 {
 154         if ((!this->fwd) && (ServerInstance->fd_ref_table[this->bound_fd] == this->bound_user))
 155         {
 156                 log(DEBUG,"Commencing forward lookup");
 157                 this->bound_user->stored_host = result;
 158                 try
 159                 {
 160                         bound_user->res_forward = new UserResolver(this->ServerInstance, this->bound_user, result, true);
 161                         MyServer->AddResolver(bound_user->res_forward);
 162                 }
 163                 catch (ModuleException& e)
 164                 {
 165                         log(DEBUG,"Error in resolver: %s",e.GetReason());
 166                 }
 167         }
 168         else if ((this->fwd) && (ServerInstance->fd_ref_table[this->bound_fd] == this->bound_user))
 169         {
 170                 /* Both lookups completed */
 171                 if (this->bound_user->GetIPString() == result)
 172                 {
 173                         std::string hostname = this->bound_user->stored_host;
 174                         if (hostname.length() < 65)
 175                         {
 176                                 /* Hostnames starting with : are not a good thing (tm) */
 177                                 if (*(hostname.c_str()) == ':')
 178                                         hostname = "0" + hostname;
 179
 180                                 this->bound_user->WriteServ("NOTICE Auth :*** Found your hostname (%s)", hostname.c_str());
 181                                 this->bound_user->dns_done = true;
 182                                 strlcpy(this->bound_user->dhost, hostname.c_str(),64);
 183                                 strlcpy(this->bound_user->host, hostname.c_str(),64);
 184                         }
 185                         else
 186                         {
 187                                 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());
 188                         }
 189                 }
 190                 else
 191                 {
 192                         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());
 193                 }
 194         }
 195 }
 196
 197 void UserResolver::OnError(ResolverError e, const std::string &errormessage)
 198 {
 199         if (ServerInstance->fd_ref_table[this->bound_fd] == this->bound_user)
 200         {
 201                 /* Error message here */
 202                 this->bound_user->WriteServ("NOTICE Auth :*** Could not resolve your hostname, using your IP address (%s) instead.", this->bound_user->GetIPString());
 203                 this->bound_user->dns_done = true;
 204         }
 205 }
 206
 207
 208 bool userrec::IsNoticeMaskSet(unsigned char sm)
 209 {
 210         return (snomasks[sm-65]);
 211 }
 212
 213 void userrec::SetNoticeMask(unsigned char sm, bool value)
 214 {
 215         snomasks[sm-65] = value;
 216 }
 217
 218 const char* userrec::FormatNoticeMasks()
 219 {
 220         static char data[MAXBUF];
 221         int offset = 0;
 222
 223         for (int n = 0; n < 64; n++)
 224         {
 225                 if (snomasks[n])
 226                         data[offset++] = n+65;
 227         }
 228
 229         data[offset] = 0;
 230         return data;
 231 }
 232
 233
 234
 235 bool userrec::IsModeSet(unsigned char m)
 236 {
 237         return (modes[m-65]);
 238 }
 239
 240 void userrec::SetMode(unsigned char m, bool value)
 241 {
 242         modes[m-65] = value;
 243 }
 244
 245 const char* userrec::FormatModes()
 246 {
 247         static char data[MAXBUF];
 248         int offset = 0;
 249         for (int n = 0; n < 64; n++)
 250         {
 251                 if (modes[n])
 252                         data[offset++] = n+65;
 253         }
 254         data[offset] = 0;
 255         return data;
 256 }
 257
 258 userrec::userrec(InspIRCd* Instance) : ServerInstance(Instance)
 259 {
 260         log(DEBUG,"userrec::userrec(): Instance: %08x",ServerInstance);
 261         // the PROPER way to do it, AVOID bzero at *ALL* costs
 262         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = 0;
 263         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 264         reset_due = TIME;
 265         lines_in = fd = lastping = signon = idle_lastmsg = nping = registered = 0;
 266         timeout = flood = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 267         haspassed = dns_done = false;
 268         recvq = "";
 269         sendq = "";
 270         WriteError = "";
 271         res_forward = res_reverse = NULL;
 272         ip = NULL;
 273         chans.clear();
 274         invites.clear();
 275         chans.resize(MAXCHANS);
 276         memset(modes,0,sizeof(modes));
 277
 278         for (unsigned int n = 0; n < MAXCHANS; n++)
 279         {
 280                 ucrec* x = new ucrec();
 281                 chans[n] = x;
 282                 x->channel = NULL;
 283                 x->uc_modes = 0;
 284         }
 285 }
 286
 287 userrec::~userrec()
 288 {
 289         for (std::vector<ucrec*>::iterator n = chans.begin(); n != chans.end(); n++)
 290         {
 291                 ucrec* x = (ucrec*)*n;
 292                 delete x;
 293         }
 294
 295         if (ip)
 296         {
 297                 if (this->GetProtocolFamily() == AF_INET)
 298                 {
 299                         delete (sockaddr_in*)ip;
 300                 }
 301 #ifdef SUPPORT_IP6LINKS
 302                 else
 303                 {
 304                         delete (sockaddr_in6*)ip;
 305                 }
 306 #endif
 307         }
 308 }
 309
 310 /* XXX - minor point, other *Host functions return a char *, this one creates it. Might be nice to be consistant? */
 311 void userrec::MakeHost(char* nhost)
 312 {
 313         /* This is much faster than snprintf */
 314         char* t = nhost;
 315         for(char* n = ident; *n; n++)
 316                 *t++ = *n;
 317         *t++ = '@';
 318         for(char* n = host; *n; n++)
 319                 *t++ = *n;
 320         *t = 0;
 321 }
 322
 323 void userrec::CloseSocket()
 324 {
 325         shutdown(this->fd,2);
 326         close(this->fd);
 327 }
 328
 329 char* userrec::GetFullHost()
 330 {
 331         static char result[MAXBUF];
 332         char* t = result;
 333         for(char* n = nick; *n; n++)
 334                 *t++ = *n;
 335         *t++ = '!';
 336         for(char* n = ident; *n; n++)
 337                 *t++ = *n;
 338         *t++ = '@';
 339         for(char* n = dhost; *n; n++)
 340                 *t++ = *n;
 341         *t = 0;
 342         return result;
 343 }
 344
 345 char* userrec::MakeWildHost()
 346 {
 347         static char nresult[MAXBUF];
 348         char* t = nresult;
 349         *t++ = '*';     *t++ = '!';
 350         *t++ = '*';     *t++ = '@';
 351         for(char* n = dhost; *n; n++)
 352                 *t++ = *n;
 353         *t = 0;
 354         return nresult;
 355 }
 356
 357 int userrec::ReadData(void* buffer, size_t size)
 358 {
 359         if (this->fd > -1)
 360         {
 361                 return read(this->fd, buffer, size);
 362         }
 363         else
 364                 return 0;
 365 }
 366
 367
 368 char* userrec::GetFullRealHost()
 369 {
 370         static char fresult[MAXBUF];
 371         char* t = fresult;
 372         for(char* n = nick; *n; n++)
 373                 *t++ = *n;
 374         *t++ = '!';
 375         for(char* n = ident; *n; n++)
 376                 *t++ = *n;
 377         *t++ = '@';
 378         for(char* n = host; *n; n++)
 379                 *t++ = *n;
 380         *t = 0;
 381         return fresult;
 382 }
 383
 384 bool userrec::IsInvited(irc::string &channel)
 385 {
 386         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 387         {
 388                 irc::string compare = i->channel;
 389
 390                 if (compare == channel)
 391                 {
 392                         return true;
 393                 }
 394         }
 395         return false;
 396 }
 397
 398 InvitedList* userrec::GetInviteList()
 399 {
 400         return &invites;
 401 }
 402
 403 void userrec::InviteTo(irc::string &channel)
 404 {
 405         Invited i;
 406         i.channel = channel;
 407         invites.push_back(i);
 408 }
 409
 410 void userrec::RemoveInvite(irc::string &channel)
 411 {
 412         log(DEBUG,"Removing invites");
 413
 414         if (invites.size())
 415         {
 416                 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 417                 {
 418                         irc::string compare = i->channel;
 419
 420                         if (compare == channel)
 421                         {
 422                                 invites.erase(i);
 423                                 return;
 424                         }
 425                 }
 426         }
 427 }
 428
 429 bool userrec::HasPermission(const std::string &command)
 430 {
 431         char* mycmd;
 432         char* savept;
 433         char* savept2;
 434
 435         /*
 436          * users on remote servers can completely bypass all permissions based checks.
 437          * This prevents desyncs when one server has different type/class tags to another.
 438          * That having been said, this does open things up to the possibility of source changes
 439          * allowing remote kills, etc - but if they have access to the src, they most likely have
 440          * access to the conf - so it's an end to a means either way.
 441          */
 442         if (!IS_LOCAL(this))
 443                 return true;
 444
 445         // are they even an oper at all?
 446         if (*this->oper)
 447         {
 448                 opertype_t::iterator iter_opertype = opertypes.find(this->oper);
 449                 if (iter_opertype != opertypes.end())
 450                 {
 451                         char* Classes = strdup(iter_opertype->second);
 452                         char* myclass = strtok_r(Classes," ",&savept);
 453                         while (myclass)
 454                         {
 455                                 operclass_t::iterator iter_operclass = operclass.find(myclass);
 456                                 if (iter_operclass != operclass.end())
 457                                 {
 458                                         char* CommandList = strdup(iter_operclass->second);
 459                                         mycmd = strtok_r(CommandList," ",&savept2);
 460                                         while (mycmd)
 461                                         {
 462                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 463                                                 {
 464                                                         free(Classes);
 465                                                         free(CommandList);
 466                                                         return true;
 467                                                 }
 468                                                 mycmd = strtok_r(NULL," ",&savept2);
 469                                         }
 470                                         free(CommandList);
 471                                 }
 472                                 myclass = strtok_r(NULL," ",&savept);
 473                         }
 474                         free(Classes);
 475                 }
 476         }
 477         return false;
 478 }
 479
 480
 481 bool userrec::AddBuffer(const std::string &a)
 482 {
 483         std::string b = "";
 484
 485         /* NB: std::string is arsey about \r and \n and tries to translate them
 486          * somehow, so we CANNOT use std::string::find() here :(
 487          */
 488         for (std::string::const_iterator i = a.begin(); i != a.end(); i++)
 489         {
 490                 if (*i != '\r')
 491                         b += *i;
 492         }
 493
 494         if (b.length())
 495                 recvq.append(b);
 496
 497         if (recvq.length() > (unsigned)this->recvqmax)
 498         {
 499                 this->SetWriteError("RecvQ exceeded");
 500                 ServerInstance->WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 501                 return false;
 502         }
 503
 504         return true;
 505 }
 506
 507 bool userrec::BufferIsReady()
 508 {
 509         return (recvq.find('\n') != std::string::npos);
 510 }
 511
 512 void userrec::ClearBuffer()
 513 {
 514         recvq = "";
 515 }
 516
 517 std::string userrec::GetBuffer()
 518 {
 519         if (!recvq.length())
 520                 return "";
 521
 522         /* Strip any leading \r or \n off the string.
 523          * Usually there are only one or two of these,
 524          * so its is computationally cheap to do.
 525          */
 526         while ((*recvq.begin() == '\r') || (*recvq.begin() == '\n'))
 527                 recvq.erase(recvq.begin());
 528
 529         for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 530         {
 531                 /* Find the first complete line, return it as the
 532                  * result, and leave the recvq as whats left
 533                  */
 534                 if (*x == '\n')
 535                 {
 536                         std::string ret = std::string(recvq.begin(), x);
 537                         recvq.erase(recvq.begin(), x + 1);
 538                         return ret;
 539                 }
 540         }
 541         return "";
 542 }
 543
 544 void userrec::AddWriteBuf(const std::string &data)
 545 {
 546         if (*this->GetWriteError())
 547                 return;
 548
 549         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 550         {
 551                 /*
 552                  * Fix by brain - Set the error text BEFORE calling writeopers, because
 553                  * if we dont it'll recursively  call here over and over again trying
 554                  * to repeatedly add the text to the sendq!
 555                  */
 556                 this->SetWriteError("SendQ exceeded");
 557                 ServerInstance->WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 558                 return;
 559         }
 560
 561         if (data.length() > 512)
 562         {
 563                 std::string newdata(data);
 564                 newdata.resize(510);
 565                 newdata.append("\r\n");
 566                 sendq.append(newdata);
 567         }
 568         else
 569         {
 570                 sendq.append(data);
 571         }
 572 }
 573
 574 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 575 void userrec::FlushWriteBuf()
 576 {
 577         if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 578         {
 579                 const char* tb = this->sendq.c_str();
 580                 int n_sent = write(this->fd,tb,this->sendq.length());
 581                 if (n_sent == -1)
 582                 {
 583                         if (errno != EAGAIN)
 584                                 this->SetWriteError(strerror(errno));
 585                 }
 586                 else
 587                 {
 588                         // advance the queue
 589                         tb += n_sent;
 590                         this->sendq = tb;
 591                         // update the user's stats counters
 592                         this->bytes_out += n_sent;
 593                         this->cmds_out++;
 594                 }
 595         }
 596 }
 597
 598 void userrec::SetWriteError(const std::string &error)
 599 {
 600         log(DEBUG,"SetWriteError: %s",error.c_str());
 601         // don't try to set the error twice, its already set take the first string.
 602         if (!this->WriteError.length())
 603         {
 604                 log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 605                 this->WriteError = error;
 606         }
 607 }
 608
 609 const char* userrec::GetWriteError()
 610 {
 611         return this->WriteError.c_str();
 612 }
 613
 614 void userrec::Oper(const std::string &opertype)
 615 {
 616         this->modes[UM_OPERATOR] = 1;
 617         this->WriteServ("MODE %s :+o", this->nick);
 618         FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 619         log(DEFAULT,"OPER: %s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 620         strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 621         all_opers.push_back(this);
 622         FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype));
 623 }
 624
 625 void userrec::UnOper()
 626 {
 627         if (*this->oper)
 628         {
 629                 *this->oper = 0;
 630                 this->modes[UM_OPERATOR] = 0;
 631                 for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
 632                 {
 633                         if (*a == this)
 634                         {
 635                                 log(DEBUG,"Oper removed from optimization list");
 636                                 all_opers.erase(a);
 637                                 return;
 638                         }
 639                 }
 640         }
 641 }
 642
 643 void userrec::QuitUser(InspIRCd* Instance, userrec *user,const std::string &quitreason)
 644 {
 645         user_hash::iterator iter = Instance->clientlist.find(user->nick);
 646
 647 /*
 648  * I'm pretty sure returning here is causing a desync when part of the net thinks a user is gone,
 649  * and another part doesn't. We want to broadcast the quit/kill before bailing so the net stays in sync.
 650  *
 651  * I can't imagine this blowing up, so I'm commenting it out. We still check
 652  * before playing with a bad iterator below in our if(). DISCUSS THIS BEFORE YOU DO ANYTHING. --w00t
 653  *
 654  *      if (iter == clientlist.end())
 655  *              return;
 656  */
 657         std::string reason = quitreason;
 658
 659         if (reason.length() > MAXQUIT - 1)
 660                 reason.resize(MAXQUIT - 1);
 661
 662         if (IS_LOCAL(user))
 663                 user->Write("ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason.c_str());
 664
 665         if (user->registered == REG_ALL)
 666         {
 667                 user->PurgeEmptyChannels();
 668                 FOREACH_MOD_I(Instance,I_OnUserQuit,OnUserQuit(user,reason));
 669                 user->WriteCommonExcept("QUIT :%s",reason.c_str());
 670         }
 671
 672         if (IS_LOCAL(user))
 673                 user->FlushWriteBuf();
 674
 675         FOREACH_MOD_I(Instance,I_OnUserDisconnect,OnUserDisconnect(user));
 676
 677         if (IS_LOCAL(user))
 678         {
 679                 if (Instance->Config->GetIOHook(user->GetPort()))
 680                 {
 681                         try
 682                         {
 683                                 Instance->Config->GetIOHook(user->GetPort())->OnRawSocketClose(user->fd);
 684                         }
 685                         catch (ModuleException& modexcept)
 686                         {
 687                                 log(DEBUG,"Module exception cought: %s",modexcept.GetReason());
 688                         }
 689                 }
 690
 691                 Instance->SE->DelFd(user->fd);
 692                 user->CloseSocket();
 693         }
 694
 695         /*
 696          * this must come before the ServerInstance->WriteOpers so that it doesnt try to fill their buffer with anything
 697          * if they were an oper with +s.
 698          *
 699          * XXX -
 700          * In the current implementation, we only show local quits, as we only show local connects. With
 701          * the proposed implmentation of snomasks however, this will likely change in the (near?) future.
 702          */
 703         if (user->registered == REG_ALL)
 704         {
 705                 if (IS_LOCAL(user))
 706                         Instance->WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason.c_str());
 707                 user->AddToWhoWas();
 708         }
 709
 710         if (iter != Instance->clientlist.end())
 711         {
 712                 log(DEBUG,"deleting user hash value %lx",(unsigned long)user);
 713                 if (IS_LOCAL(user))
 714                 {
 715                         Instance->fd_ref_table[user->fd] = NULL;
 716                         if (find(Instance->local_users.begin(),Instance->local_users.end(),user) != Instance->local_users.end())
 717                                 Instance->local_users.erase(find(Instance->local_users.begin(),Instance->local_users.end(),user));
 718                 }
 719                 Instance->clientlist.erase(iter);
 720                 DELETE(user);
 721         }
 722 }
 723
 724 namespace irc
 725 {
 726         namespace whowas
 727         {
 728
 729                 WhoWasGroup::WhoWasGroup(userrec* user) : host(NULL), dhost(NULL), ident(NULL), server(NULL), gecos(NULL), signon(user->signon)
 730                 {
 731                         this->host = strdup(user->host);
 732                         this->dhost = strdup(user->dhost);
 733                         this->ident = strdup(user->ident);
 734                         this->server = user->server;
 735                         this->gecos = strdup(user->fullname);
 736                 }
 737
 738                 WhoWasGroup::~WhoWasGroup()
 739                 {
 740                         if (host)
 741                                 free(host);
 742                         if (dhost)
 743                                 free(dhost);
 744                         if (ident)
 745                                 free(ident);
 746                         if (gecos)
 747                                 free(gecos);
 748                 }
 749
 750                 /* every hour, run this function which removes all entries over 3 days */
 751                 void MaintainWhoWas(time_t TIME)
 752                 {
 753                         for (whowas_users::iterator iter = ::whowas.begin(); iter != ::whowas.end(); iter++)
 754                         {
 755                                 whowas_set* n = (whowas_set*)iter->second;
 756                                 if (n->size())
 757                                 {
 758                                         while ((n->begin() != n->end()) && ((*n->begin())->signon < TIME - 259200)) // 3 days
 759                                         {
 760                                                 WhoWasGroup *a = *(n->begin());
 761                                                 DELETE(a);
 762                                                 n->erase(n->begin());
 763                                         }
 764                                 }
 765                         }
 766                 }
 767         };
 768 };
 769
 770 /* adds or updates an entry in the whowas list */
 771 void userrec::AddToWhoWas()
 772 {
 773         irc::whowas::whowas_users::iterator iter = whowas.find(this->nick);
 774
 775         if (iter == whowas.end())
 776         {
 777                 irc::whowas::whowas_set* n = new irc::whowas::whowas_set;
 778                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 779                 n->push_back(a);
 780                 whowas[this->nick] = n;
 781         }
 782         else
 783         {
 784                 irc::whowas::whowas_set* group = (irc::whowas::whowas_set*)iter->second;
 785
 786                 if (group->size() > 10)
 787                 {
 788                         irc::whowas::WhoWasGroup *a = (irc::whowas::WhoWasGroup*)*(group->begin());
 789                         DELETE(a);
 790                         group->pop_front();
 791                 }
 792
 793                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 794                 group->push_back(a);
 795         }
 796 }
 797
 798 /* add a client connection to the sockets list */
 799 void userrec::AddClient(InspIRCd* Instance, int socket, int port, bool iscached, insp_inaddr ip)
 800 {
 801         std::string tempnick = ConvToStr(socket) + "-unknown";
 802         user_hash::iterator iter = Instance->clientlist.find(tempnick);
 803         const char *ipaddr = insp_ntoa(ip);
 804         userrec* _new;
 805         int j = 0;
 806
 807         /*
 808          * fix by brain.
 809          * as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 810          * using one as a registered connection. As they are per fd, we can also safely assume
 811          * that we wont have collisions. Therefore, if the nick exists in the list, its only
 812          * used by a dead socket, erase the iterator so that the new client may reclaim it.
 813          * this was probably the cause of 'server ignores me when i hammer it with reconnects'
 814          * issue in earlier alphas/betas
 815          */
 816         if (iter != Instance->clientlist.end())
 817         {
 818                 userrec* goner = iter->second;
 819                 DELETE(goner);
 820                 Instance->clientlist.erase(iter);
 821         }
 822
 823         log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr);
 824
 825         _new = new userrec(Instance);
 826         Instance->clientlist[tempnick] = _new;
 827         _new->fd = socket;
 828         strlcpy(_new->nick,tempnick.c_str(),NICKMAX-1);
 829
 830         _new->server = Instance->FindServerNamePtr(Instance->Config->ServerName);
 831         /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
 832         strcpy(_new->ident, "unknown");
 833
 834         _new->registered = REG_NONE;
 835         _new->signon = TIME + Instance->Config->dns_timeout;
 836         _new->lastping = 1;
 837
 838         log(DEBUG,"Setting socket addresses");
 839         _new->SetSockAddr(AF_FAMILY, ipaddr, port);
 840         log(DEBUG,"Socket addresses set.");
 841
 842         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
 843         for (const char* temp = _new->GetIPString(); *temp && j < 64; temp++, j++)
 844                 _new->dhost[j] = _new->host[j] = *temp;
 845         _new->dhost[j] = _new->host[j] = 0;
 846
 847         // set the registration timeout for this user
 848         unsigned long class_regtimeout = 90;
 849         int class_flood = 0;
 850         long class_threshold = 5;
 851         long class_sqmax = 262144;      // 256kb
 852         long class_rqmax = 4096;        // 4k
 853
 854         for (ClassVector::iterator i = Instance->Config->Classes.begin(); i != Instance->Config->Classes.end(); i++)
 855         {
 856                 if ((i->type == CC_ALLOW) && (match(ipaddr,i->host.c_str(),true)))
 857                 {
 858                         class_regtimeout = (unsigned long)i->registration_timeout;
 859                         class_flood = i->flood;
 860                         _new->pingmax = i->pingtime;
 861                         class_threshold = i->threshold;
 862                         class_sqmax = i->sendqmax;
 863                         class_rqmax = i->recvqmax;
 864                         break;
 865                 }
 866         }
 867
 868         _new->nping = TIME + _new->pingmax + Instance->Config->dns_timeout;
 869         _new->timeout = TIME+class_regtimeout;
 870         _new->flood = class_flood;
 871         _new->threshold = class_threshold;
 872         _new->sendqmax = class_sqmax;
 873         _new->recvqmax = class_rqmax;
 874
 875         Instance->fd_ref_table[socket] = _new;
 876         Instance->local_users.push_back(_new);
 877
 878         if (Instance->local_users.size() > Instance->Config->SoftLimit)
 879         {
 880                 userrec::QuitUser(Instance, _new,"No more connections allowed");
 881                 return;
 882         }
 883
 884         if (Instance->local_users.size() >= MAXCLIENTS)
 885         {
 886                 userrec::QuitUser(Instance, _new,"No more connections allowed");
 887                 return;
 888         }
 889
 890         /*
 891          * XXX -
 892          * this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 893          * its a pretty big but for the moment valid assumption:
 894          * file descriptors are handed out starting at 0, and are recycled as theyre freed.
 895          * therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 896          * irc server at once (or the irc server otherwise initiating this many connections, files etc)
 897          * which for the time being is a physical impossibility (even the largest networks dont have more
 898          * than about 10,000 users on ONE server!)
 899          */
 900         if ((unsigned)socket >= MAX_DESCRIPTORS)
 901         {
 902                 userrec::QuitUser(Instance, _new,"Server is full");
 903                 return;
 904         }
 905         char* e = matches_exception(ipaddr);
 906         if (!e)
 907         {
 908                 char* r = matches_zline(ipaddr);
 909                 if (r)
 910                 {
 911                         char reason[MAXBUF];
 912                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
 913                         userrec::QuitUser(Instance, _new,reason);
 914                         return;
 915                 }
 916         }
 917
 918         if (socket > -1)
 919         {
 920                 if (!Instance->SE->AddFd(socket,true,X_ESTAB_CLIENT))
 921                 {
 922                         userrec::QuitUser(Instance, _new, "Internal error handling connection");
 923                         return;
 924                 }
 925         }
 926
 927         _new->WriteServ("NOTICE Auth :*** Looking up your hostname...");
 928 }
 929
 930 long userrec::GlobalCloneCount()
 931 {
 932         char u1[1024];
 933         char u2[1024];
 934         long x = 0;
 935         for (user_hash::const_iterator a = ServerInstance->clientlist.begin(); a != ServerInstance->clientlist.end(); a++)
 936         {
 937                 /* We have to match ip's as strings - we don't know what protocol
 938                  * a remote user may be using
 939                  */
 940                 if (!strcasecmp(a->second->GetIPString(u1), this->GetIPString(u2)))
 941                                 x++;
 942         }
 943         return x;
 944 }
 945
 946 long userrec::LocalCloneCount()
 947 {
 948         long x = 0;
 949         for (std::vector<userrec*>::const_iterator a = ServerInstance->local_users.begin(); a != ServerInstance->local_users.end(); a++)
 950         {
 951                 userrec* comp = *a;
 952 #ifdef IPV6
 953                 /* I dont think theres any faster way of matching two ipv6 addresses than memcmp */
 954                 in6_addr* s1 = &(((sockaddr_in6*)comp->ip)->sin6_addr);
 955                 in6_addr* s2 = &(((sockaddr_in6*)this->ip)->sin6_addr);
 956                 if (!memcmp(s1->s6_addr, s2->s6_addr, sizeof(in6_addr)))
 957                         x++;
 958 #else
 959                 in_addr* s1 = &((sockaddr_in*)comp->ip)->sin_addr;
 960                 in_addr* s2 = &((sockaddr_in*)this->ip)->sin_addr;
 961                 if (s1->s_addr == s2->s_addr)
 962                         x++;
 963 #endif
 964         }
 965         return x;
 966 }
 967
 968 void userrec::FullConnect(CullList* Goners)
 969 {
 970         ServerInstance->stats->statsConnects++;
 971         this->idle_lastmsg = TIME;
 972
 973         ConnectClass a = this->GetClass();
 974
 975         if (a.type == CC_DENY)
 976         {
 977                 Goners->AddItem(this,"Unauthorised connection");
 978                 return;
 979         }
 980
 981         if ((*(a.pass.c_str())) && (!this->haspassed))
 982         {
 983                 Goners->AddItem(this,"Invalid password");
 984                 return;
 985         }
 986
 987         if (this->LocalCloneCount() > a.maxlocal)
 988         {
 989                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (local)");
 990                 ServerInstance->WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a.maxlocal, this->GetIPString());
 991                 return;
 992         }
 993         else if (this->GlobalCloneCount() > a.maxglobal)
 994         {
 995                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (global)");
 996                 ServerInstance->WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a.maxglobal, this->GetIPString());
 997                 return;
 998         }
 999
1000         char match_against[MAXBUF];
1001         snprintf(match_against,MAXBUF,"%s@%s", this->ident, this->host);
1002         char* e = matches_exception(match_against);
1003
1004         if (!e)
1005         {
1006                 char* r = matches_gline(match_against);
1007
1008                 if (r)
1009                 {
1010                         char reason[MAXBUF];
1011                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
1012                         Goners->AddItem(this, reason);
1013                         return;
1014                 }
1015
1016                 r = matches_kline(match_against);
1017
1018                 if (r)
1019                 {
1020                         char reason[MAXBUF];
1021                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
1022                         Goners->AddItem(this, reason);
1023                         return;
1024                 }
1025         }
1026
1027
1028         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
1029         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
1030         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
1031         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
1032         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());
1033
1034         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
1035         // so i'd better split it :)
1036         std::stringstream out(ServerInstance->Config->data005);
1037         std::string token = "";
1038         std::string line5 = "";
1039         int token_counter = 0;
1040
1041         while (!out.eof())
1042         {
1043                 out >> token;
1044                 line5 = line5 + token + " ";
1045                 token_counter++;
1046
1047                 if ((token_counter >= 13) || (out.eof() == true))
1048                 {
1049                         this->WriteServ("005 %s %s:are supported by this server", this->nick, line5.c_str());
1050                         line5 = "";
1051                         token_counter = 0;
1052                 }
1053         }
1054
1055         ShowMOTD(this);
1056
1057         /*
1058          * fix 3 by brain, move registered = 7 below these so that spurious modes and host
1059          * changes dont go out onto the network and produce 'fake direction'.
1060          */
1061         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
1062         FOREACH_MOD(I_OnGlobalConnect,OnGlobalConnect(this));
1063         this->registered = REG_ALL;
1064         ServerInstance->WriteOpers("*** Client connecting on port %d: %s!%s@%s [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString());
1065 }
1066
1067 /** userrec::UpdateNick()
1068  * re-allocates a nick in the user_hash after they change nicknames,
1069  * returns a pointer to the new user as it may have moved
1070  */
1071 userrec* userrec::UpdateNickHash(const char* New)
1072 {
1073         //user_hash::iterator newnick;
1074         user_hash::iterator oldnick = ServerInstance->clientlist.find(this->nick);
1075
1076         if (!strcasecmp(this->nick,New))
1077                 return oldnick->second;
1078
1079         if (oldnick == ServerInstance->clientlist.end())
1080                 return NULL; /* doesnt exist */
1081
1082         userrec* olduser = oldnick->second;
1083         ServerInstance->clientlist[New] = olduser;
1084         ServerInstance->clientlist.erase(oldnick);
1085         return ServerInstance->clientlist[New];
1086 }
1087
1088 bool userrec::ForceNickChange(const char* newnick)
1089 {
1090         char nick[MAXBUF];
1091         int MOD_RESULT = 0;
1092
1093         *nick = 0;
1094
1095         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1096
1097         if (MOD_RESULT)
1098         {
1099                 ServerInstance->stats->statsCollisions++;
1100                 return false;
1101         }
1102
1103         if (matches_qline(newnick))
1104         {
1105                 ServerInstance->stats->statsCollisions++;
1106                 return false;
1107         }
1108
1109         if (newnick)
1110         {
1111                 strlcpy(this->nick, newnick, NICKMAX - 1);
1112         }
1113         if (this->registered == REG_ALL)
1114         {
1115                 const char* pars[1];
1116                 pars[0] = nick;
1117                 std::string cmd = "NICK";
1118                 ServerInstance->Parser->CallHandler(cmd, pars, 1, this);
1119         }
1120         return true;
1121 }
1122
1123 void userrec::SetSockAddr(int protocol_family, const char* ip, int port)
1124 {
1125         switch (protocol_family)
1126         {
1127 #ifdef SUPPORT_IP6LINKS
1128                 case AF_INET6:
1129                 {
1130                         log(DEBUG,"Set inet6 protocol address");
1131                         sockaddr_in6* sin = new sockaddr_in6;
1132                         sin->sin6_family = AF_INET6;
1133                         sin->sin6_port = port;
1134                         inet_pton(AF_INET6, ip, &sin->sin6_addr);
1135                         this->ip = (sockaddr*)sin;
1136                 }
1137                 break;
1138 #endif
1139                 case AF_INET:
1140                 {
1141                         log(DEBUG,"Set inet4 protocol address");
1142                         sockaddr_in* sin = new sockaddr_in;
1143                         sin->sin_family = AF_INET;
1144                         sin->sin_port = port;
1145                         inet_pton(AF_INET, ip, &sin->sin_addr);
1146                         this->ip = (sockaddr*)sin;
1147                 }
1148                 break;
1149                 default:
1150                         log(DEBUG,"Ut oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1151                 break;
1152         }
1153 }
1154
1155 int userrec::GetPort()
1156 {
1157         if (this->ip == NULL)
1158                 return 0;
1159
1160         switch (this->GetProtocolFamily())
1161         {
1162 #ifdef SUPPORT_IP6LINKS
1163                 case AF_INET6:
1164                 {
1165                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1166                         return sin->sin6_port;
1167                 }
1168                 break;
1169 #endif
1170                 case AF_INET:
1171                 {
1172                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1173                         return sin->sin_port;
1174                 }
1175                 break;
1176                 default:
1177                         log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1178                 break;
1179         }
1180         return 0;
1181 }
1182
1183 int userrec::GetProtocolFamily()
1184 {
1185         if (this->ip == NULL)
1186                 return 0;
1187
1188         sockaddr_in* sin = (sockaddr_in*)this->ip;
1189         return sin->sin_family;
1190 }
1191
1192 const char* userrec::GetIPString()
1193 {
1194         static char buf[1024];
1195         static char temp[1024];
1196
1197         if (this->ip == NULL)
1198                 return "";
1199
1200         switch (this->GetProtocolFamily())
1201         {
1202 #ifdef SUPPORT_IP6LINKS
1203                 case AF_INET6:
1204                 {
1205                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1206                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1207                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1208                         if (*buf == ':')
1209                         {
1210                                 strlcpy(&temp[1], buf, sizeof(temp));
1211                                 *temp = '0';
1212                                 return temp;
1213                         }
1214                         return buf;
1215                 }
1216                 break;
1217 #endif
1218                 case AF_INET:
1219                 {
1220                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1221                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1222                         return buf;
1223                 }
1224                 break;
1225                 default:
1226                         log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1227                 break;
1228         }
1229         return "";
1230 }
1231
1232 const char* userrec::GetIPString(char* buf)
1233 {
1234         static char temp[1024];
1235
1236         if (this->ip == NULL)
1237         {
1238                 *buf = 0;
1239                 return buf;
1240         }
1241
1242         switch (this->GetProtocolFamily())
1243         {
1244 #ifdef SUPPORT_IP6LINKS
1245                 case AF_INET6:
1246                 {
1247                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1248                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1249                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1250                         if (*buf == ':')
1251                         {
1252                                 strlcpy(&temp[1], buf, sizeof(temp));
1253                                 *temp = '0';
1254                                 strlcpy(buf, temp, sizeof(temp));
1255                         }
1256                         return buf;
1257                 }
1258                 break;
1259 #endif
1260                 case AF_INET:
1261                 {
1262                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1263                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1264                         return buf;
1265                 }
1266                 break;
1267
1268                 default:
1269                         log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1270                 break;
1271         }
1272         return "";
1273 }
1274
1275
1276 void userrec::Write(const std::string &text)
1277 {
1278         if ((this->fd < 0) || (this->fd > MAX_DESCRIPTORS))
1279                 return;
1280
1281         std::string crlf = text;
1282         crlf.append("\r\n");
1283
1284         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1285         {
1286                 try
1287                 {
1288                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, crlf.data(), crlf.length());
1289                 }
1290                 catch (ModuleException& modexcept)
1291                 {
1292                         log(DEBUG,"Module exception caught: %s",modexcept.GetReason());
1293                 }
1294         }
1295         else
1296         {
1297                 this->AddWriteBuf(crlf);
1298         }
1299         ServerInstance->stats->statsSent += crlf.length();
1300 }
1301
1302 /** Write()
1303  */
1304 void userrec::Write(const char *text, ...)
1305 {
1306         va_list argsPtr;
1307         char textbuffer[MAXBUF];
1308
1309         va_start(argsPtr, text);
1310         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1311         va_end(argsPtr);
1312
1313         this->Write(std::string(textbuffer));
1314 }
1315
1316 void userrec::WriteServ(const std::string& text)
1317 {
1318         char textbuffer[MAXBUF];
1319
1320         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1321         this->Write(std::string(textbuffer));
1322 }
1323
1324 /** WriteServ()
1325  *  Same as Write(), except `text' is prefixed with `:server.name '.
1326  */
1327 void userrec::WriteServ(const char* text, ...)
1328 {
1329         va_list argsPtr;
1330         char textbuffer[MAXBUF];
1331
1332         va_start(argsPtr, text);
1333         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1334         va_end(argsPtr);
1335
1336         this->WriteServ(std::string(textbuffer));
1337 }
1338
1339
1340 void userrec::WriteFrom(userrec *user, const std::string &text)
1341 {
1342         char tb[MAXBUF];
1343
1344         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1345
1346         this->Write(std::string(tb));
1347 }
1348
1349
1350 /* write text from an originating user to originating user */
1351
1352 void userrec::WriteFrom(userrec *user, const char* text, ...)
1353 {
1354         va_list argsPtr;
1355         char textbuffer[MAXBUF];
1356
1357         va_start(argsPtr, text);
1358         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1359         va_end(argsPtr);
1360
1361         this->WriteFrom(user, std::string(textbuffer));
1362 }
1363
1364
1365 /* write text to an destination user from a source user (e.g. user privmsg) */
1366
1367 void userrec::WriteTo(userrec *dest, const char *data, ...)
1368 {
1369         char textbuffer[MAXBUF];
1370         va_list argsPtr;
1371
1372         va_start(argsPtr, data);
1373         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1374         va_end(argsPtr);
1375
1376         this->WriteTo(dest, std::string(textbuffer));
1377 }
1378
1379 void userrec::WriteTo(userrec *dest, const std::string &data)
1380 {
1381         dest->WriteFrom(this, data);
1382 }
1383
1384
1385 void userrec::WriteCommon(const char* text, ...)
1386 {
1387         char textbuffer[MAXBUF];
1388         va_list argsPtr;
1389
1390         if (this->registered != REG_ALL)
1391                 return;
1392
1393         va_start(argsPtr, text);
1394         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1395         va_end(argsPtr);
1396
1397         this->WriteCommon(std::string(textbuffer));
1398 }
1399
1400 void userrec::WriteCommon(const std::string &text)
1401 {
1402         bool sent_to_at_least_one = false;
1403
1404         if (this->registered != REG_ALL)
1405                 return;
1406
1407         uniq_id++;
1408
1409         for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1410         {
1411                 ucrec *n = *v;
1412                 if (n->channel)
1413                 {
1414                         CUList *ulist= n->channel->GetUsers();
1415
1416                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1417                         {
1418                                 if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1419                                 {
1420                                         already_sent[i->second->fd] = uniq_id;
1421                                         i->second->WriteFrom(this, std::string(text));
1422                                         sent_to_at_least_one = true;
1423                                 }
1424                         }
1425                 }
1426         }
1427
1428         /*
1429          * if the user was not in any channels, no users will receive the text. Make sure the user
1430          * receives their OWN message for WriteCommon
1431          */
1432         if (!sent_to_at_least_one)
1433         {
1434                 this->WriteFrom(this,std::string(text));
1435         }
1436 }
1437
1438
1439 /* write a formatted string to all users who share at least one common
1440  * channel, NOT including the source user e.g. for use in QUIT
1441  */
1442
1443 void userrec::WriteCommonExcept(const char* text, ...)
1444 {
1445         char textbuffer[MAXBUF];
1446         va_list argsPtr;
1447
1448         va_start(argsPtr, text);
1449         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1450         va_end(argsPtr);
1451
1452         this->WriteCommonExcept(std::string(textbuffer));
1453 }
1454
1455 void userrec::WriteCommonExcept(const std::string &text)
1456 {
1457         bool quit_munge = true;
1458         char oper_quit[MAXBUF];
1459         char textbuffer[MAXBUF];
1460
1461         strlcpy(textbuffer, text.c_str(), MAXBUF);
1462
1463         if (this->registered != REG_ALL)
1464                 return;
1465
1466         uniq_id++;
1467
1468         /* TODO: We need some form of WriteCommonExcept that will send two lines, one line to
1469          * opers and the other line to non-opers, then all this hidebans and hidesplits gunk
1470          * can go byebye.
1471          */
1472         if (ServerInstance->Config->HideSplits)
1473         {
1474                 char* check = textbuffer + 6;
1475
1476                 if (!strncasecmp(textbuffer, "QUIT :",6))
1477                 {
1478                         std::stringstream split(check);
1479                         std::string server_one;
1480                         std::string server_two;
1481
1482                         split >> server_one;
1483                         split >> server_two;
1484
1485                         if ((ServerInstance->FindServerName(server_one)) && (ServerInstance->FindServerName(server_two)))
1486                         {
1487                                 strlcpy(oper_quit,textbuffer,MAXQUIT);
1488                                 strlcpy(check,"*.net *.split",MAXQUIT);
1489                                 quit_munge = true;
1490                         }
1491                 }
1492         }
1493
1494         if ((ServerInstance->Config->HideBans) && (!quit_munge))
1495         {
1496                 if ((!strncasecmp(textbuffer, "QUIT :G-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :K-Lined:",14))
1497                 || (!strncasecmp(textbuffer, "QUIT :Q-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :Z-Lined:",14)))
1498                 {
1499                         char* check = textbuffer + 13;
1500                         strlcpy(oper_quit,textbuffer,MAXQUIT);
1501                         *check = 0;  // We don't need to strlcpy, we just chop it from the :
1502                         quit_munge = true;
1503                 }
1504         }
1505
1506         for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1507         {
1508                 ucrec* n = *v;
1509                 if (n->channel)
1510                 {
1511                         CUList *ulist= n->channel->GetUsers();
1512
1513                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1514                         {
1515                                 if (this != i->second)
1516                                 {
1517                                         if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1518                                         {
1519                                                 already_sent[i->second->fd] = uniq_id;
1520                                                 if (quit_munge)
1521                                                         i->second->WriteFrom(this, *i->second->oper ? std::string(oper_quit) : std::string(textbuffer));
1522                                                 else
1523                                                         i->second->WriteFrom(this, std::string(textbuffer));
1524                                         }
1525                                 }
1526                         }
1527                 }
1528         }
1529
1530 }
1531
1532 void userrec::WriteWallOps(const std::string &text)
1533 {
1534         /* Does nothing if theyre not opered */
1535         if ((!*this->oper) && (IS_LOCAL(this)))
1536                 return;
1537
1538         std::string wallop = "WALLOPS :";
1539         wallop.append(text);
1540
1541         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1542         {
1543                 userrec* t = *i;
1544                 if ((IS_LOCAL(t)) && (t->modes[UM_WALLOPS]))
1545                         this->WriteTo(t,wallop);
1546         }
1547 }
1548
1549 void userrec::WriteWallOps(const char* text, ...)
1550 {
1551         char textbuffer[MAXBUF];
1552         va_list argsPtr;
1553
1554         va_start(argsPtr, text);
1555         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1556         va_end(argsPtr);
1557
1558         this->WriteWallOps(std::string(textbuffer));
1559 }
1560
1561 /* return 0 or 1 depending if users u and u2 share one or more common channels
1562  * (used by QUIT, NICK etc which arent channel specific notices)
1563  *
1564  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1565  * the first users channels then the second users channels within the outer loop,
1566  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1567  * all possible iterations). However this new function instead checks against the
1568  * channel's userlist in the inner loop which is a std::map<userrec*,userrec*>
1569  * and saves us time as we already know what pointer value we are after.
1570  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1571  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1572  */
1573 bool userrec::SharesChannelWith(userrec *other)
1574 {
1575         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1576                 return false;
1577
1578         /* Outer loop */
1579         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1580         {
1581                 /* Fetch the channel from the user */
1582                 ucrec* user_channel = *i;
1583
1584                 if (user_channel->channel)
1585                 {
1586                         /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1587                          * by replacing it with a map::find which *should* be more efficient
1588                          */
1589                         if (user_channel->channel->HasUser(other))
1590                                 return true;
1591                 }
1592         }
1593         return false;
1594 }
1595
1596 int userrec::CountChannels()
1597 {
1598         int z = 0;
1599         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1600                 if ((*i)->channel)
1601                         z++;
1602         return z;
1603 }
1604
1605 bool userrec::ChangeName(const char* gecos)
1606 {
1607         if (IS_LOCAL(this))
1608         {
1609                 int MOD_RESULT = 0;
1610                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1611                 if (MOD_RESULT)
1612                         return false;
1613                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1614         }
1615         strlcpy(this->fullname,gecos,MAXGECOS+1);
1616         return true;
1617 }
1618
1619 bool userrec::ChangeDisplayedHost(const char* host)
1620 {
1621         if (IS_LOCAL(this))
1622         {
1623                 int MOD_RESULT = 0;
1624                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host));
1625                 if (MOD_RESULT)
1626                         return false;
1627                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host));
1628         }
1629         strlcpy(this->dhost,host,63);
1630
1631         if (IS_LOCAL(this))
1632                 this->WriteServ("396 %s %s :is now your hidden host",this->nick,this->dhost);
1633
1634         return true;
1635 }
1636
1637 void userrec::NoticeAll(char* text, ...)
1638 {
1639         char textbuffer[MAXBUF];
1640         char formatbuffer[MAXBUF];
1641         va_list argsPtr;
1642
1643         va_start(argsPtr, text);
1644         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1645         va_end(argsPtr);
1646
1647         snprintf(formatbuffer,MAXBUF,"NOTICE $* :%s",textbuffer);
1648
1649         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1650         {
1651                 userrec* t = *i;
1652                 t->WriteFrom(this, std::string(formatbuffer));
1653         }
1654 }
1655
1656
1657 std::string userrec::ChannelList(userrec* source)
1658 {
1659         std::string list;
1660         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1661         {
1662                 ucrec* rec = *i;
1663
1664                 if(rec->channel && rec->channel->name)
1665                 {
1666                         /* If the target is the same as the sender, let them see all their channels.
1667                          * If the channel is NOT private/secret OR the user shares a common channel
1668                          * If the user is an oper, and the <options:operspywhois> option is set.
1669                          */
1670                         if ((source == this) || (*source->oper && ServerInstance->Config->OperSpyWhois) || (((!rec->channel->modes[CM_PRIVATE]) && (!rec->channel->modes[CM_SECRET])) || (rec->channel->HasUser(source))))
1671                         {
1672                                 list.append(rec->channel->GetStatusChar(this)).append(rec->channel->name).append(" ");
1673                         }
1674                 }
1675         }
1676         return list;
1677 }
1678
1679 void userrec::SplitChanList(userrec* dest, const std::string &cl)
1680 {
1681         std::string line;
1682         std::ostringstream prefix;
1683         std::string::size_type start, pos, length;
1684
1685         prefix << ":" << ServerInstance->Config->ServerName << " 319 " << this->nick << " " << dest->nick << " :";
1686         line = prefix.str();
1687
1688         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1689         {
1690                 length = (pos == std::string::npos) ? cl.length() : pos;
1691
1692                 if (line.length() + length - start > 510)
1693                 {
1694                         this->Write(line);
1695                         line = prefix.str();
1696                 }
1697
1698                 if(pos == std::string::npos)
1699                 {
1700                         line += cl.substr(start, length - start);
1701                         break;
1702                 }
1703                 else
1704                 {
1705                         line += cl.substr(start, length - start + 1);
1706                 }
1707         }
1708
1709         if (line.length())
1710         {
1711                 this->Write(line);
1712         }
1713 }
1714
1715
1716 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1717  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1718  * then their ip will be taken as 'priority' anyway, so for example,
1719  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1720  */
1721 ConnectClass& userrec::GetClass()
1722 {
1723         for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1724         {
1725                 if ((match(this->GetIPString(),i->host.c_str(),true)) || (match(this->host,i->host.c_str())))
1726                         return *i;
1727         }
1728
1729         return *(ServerInstance->Config->Classes.begin());
1730 }
1731
1732 void userrec::PurgeEmptyChannels()
1733 {
1734         std::vector<chanrec*> to_delete;
1735
1736         // firstly decrement the count on each channel
1737         for (std::vector<ucrec*>::iterator f = this->chans.begin(); f != this->chans.end(); f++)
1738         {
1739                 ucrec* uc = *f;
1740                 if (uc->channel)
1741                 {
1742                         if (uc->channel->DelUser(this) == 0)
1743                         {
1744                                 /* No users left in here, mark it for deletion */
1745                                 to_delete.push_back(uc->channel);
1746                                 uc->channel = NULL;
1747                         }
1748                 }
1749         }
1750
1751         for (std::vector<chanrec*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1752         {
1753                 chanrec* thischan = *n;
1754                 chan_hash::iterator i2 = ServerInstance->chanlist.find(thischan->name);
1755                 if (i2 != ServerInstance->chanlist.end())
1756                 {
1757                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1758                         DELETE(i2->second);
1759                         ServerInstance->chanlist.erase(i2);
1760                 }
1761         }
1762
1763         this->UnOper();
1764 }
1765