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
  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 irc::whowas::whowas_users whowas;
  35 static unsigned long already_sent[MAX_DESCRIPTORS] = {0};
  36
  37 typedef std::map<irc::string,char*> opertype_t;
  38 typedef opertype_t operclass_t;
  39
  40 opertype_t opertypes;
  41 operclass_t operclass;
  42
  43 /* XXX: Used for speeding up WriteCommon operations */
  44 unsigned long uniq_id = 0;
  45
  46 bool InitTypes(ServerConfig* conf, const char* tag)
  47 {
  48         for (opertype_t::iterator n = opertypes.begin(); n != opertypes.end(); n++)
  49         {
  50                 if (n->second)
  51                         delete[] n->second;
  52         }
  53
  54         opertypes.clear();
  55         return true;
  56 }
  57
  58 bool InitClasses(ServerConfig* conf, const char* tag)
  59 {
  60         for (operclass_t::iterator n = operclass.begin(); n != operclass.end(); n++)
  61         {
  62                 if (n->second)
  63                         delete[] n->second;
  64         }
  65
  66         operclass.clear();
  67         return true;
  68 }
  69
  70 bool DoType(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
  71 {
  72         char* TypeName = (char*)values[0];
  73         char* Classes = (char*)values[1];
  74
  75         opertypes[TypeName] = strdup(Classes);
  76         conf->GetInstance()->Log(DEBUG,"Read oper TYPE '%s' with classes '%s'",TypeName,Classes);
  77         return true;
  78 }
  79
  80 bool DoClass(ServerConfig* conf, const char* tag, char** entries, void** values, int* types)
  81 {
  82         char* ClassName = (char*)values[0];
  83         char* CommandList = (char*)values[1];
  84
  85         operclass[ClassName] = strdup(CommandList);
  86         conf->GetInstance()->Log(DEBUG,"Read oper CLASS '%s' with commands '%s'",ClassName,CommandList);
  87         return true;
  88 }
  89
  90 bool DoneClassesAndTypes(ServerConfig* conf, const char* tag)
  91 {
  92         return true;
  93 }
  94
  95 bool userrec::ProcessNoticeMasks(const char *sm)
  96 {
  97         bool adding = true;
  98         const char *c = sm;
  99
 100         while (c && *c)
 101         {
 102                 switch (*c)
 103                 {
 104                         case '+':
 105                                 adding = true;
 106                                 break;
 107                         case '-':
 108                                 adding = false;
 109                                 break;
 110                         default:
 111                                 if ((*c >= 'A') && (*c <= 'z'))
 112                                         this->SetNoticeMask(*c, adding);
 113                                 break;
 114                 }
 115
 116                 *c++;
 117         }
 118
 119         return true;
 120 }
 121
 122 void userrec::StartDNSLookup()
 123 {
 124         ServerInstance->Log(DEBUG,"Commencing reverse lookup");
 125         try
 126         {
 127                 ServerInstance->Log(DEBUG,"Passing instance: %08x",this->ServerInstance);
 128                 res_reverse = new UserResolver(this->ServerInstance, this, this->GetIPString(), false);
 129                 this->ServerInstance->AddResolver(res_reverse);
 130         }
 131         catch (ModuleException& e)
 132         {
 133                 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
 134         }
 135 }
 136
 137 UserResolver::UserResolver(InspIRCd* Instance, userrec* user, std::string to_resolve, bool forward) :
 138         Resolver(Instance, to_resolve, forward ? DNS_QUERY_FORWARD : DNS_QUERY_REVERSE), bound_user(user)
 139 {
 140         this->fwd = forward;
 141         this->bound_fd = user->fd;
 142 }
 143
 144 void UserResolver::OnLookupComplete(const std::string &result)
 145 {
 146         if ((!this->fwd) && (ServerInstance->fd_ref_table[this->bound_fd] == this->bound_user))
 147         {
 148                 ServerInstance->Log(DEBUG,"Commencing forward lookup");
 149                 this->bound_user->stored_host = result;
 150                 try
 151                 {
 152                         bound_user->res_forward = new UserResolver(this->ServerInstance, this->bound_user, result, true);
 153                         this->ServerInstance->AddResolver(bound_user->res_forward);
 154                 }
 155                 catch (ModuleException& e)
 156                 {
 157                         ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
 158                 }
 159         }
 160         else if ((this->fwd) && (ServerInstance->fd_ref_table[this->bound_fd] == this->bound_user))
 161         {
 162                 /* Both lookups completed */
 163                 if (this->bound_user->GetIPString() == result)
 164                 {
 165                         std::string hostname = this->bound_user->stored_host;
 166                         if (hostname.length() < 65)
 167                         {
 168                                 /* Hostnames starting with : are not a good thing (tm) */
 169                                 if (*(hostname.c_str()) == ':')
 170                                         hostname = "0" + hostname;
 171
 172                                 this->bound_user->WriteServ("NOTICE Auth :*** Found your hostname (%s)", hostname.c_str());
 173                                 this->bound_user->dns_done = true;
 174                                 strlcpy(this->bound_user->dhost, hostname.c_str(),64);
 175                                 strlcpy(this->bound_user->host, hostname.c_str(),64);
 176                         }
 177                         else
 178                         {
 179                                 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());
 180                         }
 181                 }
 182                 else
 183                 {
 184                         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());
 185                 }
 186         }
 187 }
 188
 189 void UserResolver::OnError(ResolverError e, const std::string &errormessage)
 190 {
 191         if (ServerInstance->fd_ref_table[this->bound_fd] == this->bound_user)
 192         {
 193                 /* Error message here */
 194                 this->bound_user->WriteServ("NOTICE Auth :*** Could not resolve your hostname, using your IP address (%s) instead.", this->bound_user->GetIPString());
 195                 this->bound_user->dns_done = true;
 196         }
 197 }
 198
 199
 200 bool userrec::IsNoticeMaskSet(unsigned char sm)
 201 {
 202         return (snomasks[sm-65]);
 203 }
 204
 205 void userrec::SetNoticeMask(unsigned char sm, bool value)
 206 {
 207         snomasks[sm-65] = value;
 208 }
 209
 210 const char* userrec::FormatNoticeMasks()
 211 {
 212         static char data[MAXBUF];
 213         int offset = 0;
 214
 215         for (int n = 0; n < 64; n++)
 216         {
 217                 if (snomasks[n])
 218                         data[offset++] = n+65;
 219         }
 220
 221         data[offset] = 0;
 222         return data;
 223 }
 224
 225
 226
 227 bool userrec::IsModeSet(unsigned char m)
 228 {
 229         return (modes[m-65]);
 230 }
 231
 232 void userrec::SetMode(unsigned char m, bool value)
 233 {
 234         modes[m-65] = value;
 235 }
 236
 237 const char* userrec::FormatModes()
 238 {
 239         static char data[MAXBUF];
 240         int offset = 0;
 241         for (int n = 0; n < 64; n++)
 242         {
 243                 if (modes[n])
 244                         data[offset++] = n+65;
 245         }
 246         data[offset] = 0;
 247         return data;
 248 }
 249
 250 userrec::userrec(InspIRCd* Instance) : ServerInstance(Instance)
 251 {
 252         ServerInstance->Log(DEBUG,"userrec::userrec(): Instance: %08x",ServerInstance);
 253         // the PROPER way to do it, AVOID bzero at *ALL* costs
 254         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = 0;
 255         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 256         reset_due = ServerInstance->Time();
 257         lines_in = fd = lastping = signon = idle_lastmsg = nping = registered = 0;
 258         timeout = flood = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 259         haspassed = dns_done = false;
 260         recvq = "";
 261         sendq = "";
 262         WriteError = "";
 263         res_forward = res_reverse = NULL;
 264         ip = NULL;
 265         chans.clear();
 266         invites.clear();
 267         chans.resize(MAXCHANS);
 268         memset(modes,0,sizeof(modes));
 269
 270         for (unsigned int n = 0; n < MAXCHANS; n++)
 271         {
 272                 ucrec* x = new ucrec();
 273                 chans[n] = x;
 274                 x->channel = NULL;
 275                 x->uc_modes = 0;
 276         }
 277 }
 278
 279 userrec::~userrec()
 280 {
 281         for (std::vector<ucrec*>::iterator n = chans.begin(); n != chans.end(); n++)
 282         {
 283                 ucrec* x = (ucrec*)*n;
 284                 delete x;
 285         }
 286
 287         if (ip)
 288         {
 289                 if (this->GetProtocolFamily() == AF_INET)
 290                 {
 291                         delete (sockaddr_in*)ip;
 292                 }
 293 #ifdef SUPPORT_IP6LINKS
 294                 else
 295                 {
 296                         delete (sockaddr_in6*)ip;
 297                 }
 298 #endif
 299         }
 300 }
 301
 302 /* XXX - minor point, other *Host functions return a char *, this one creates it. Might be nice to be consistant? */
 303 void userrec::MakeHost(char* nhost)
 304 {
 305         /* This is much faster than snprintf */
 306         char* t = nhost;
 307         for(char* n = ident; *n; n++)
 308                 *t++ = *n;
 309         *t++ = '@';
 310         for(char* n = host; *n; n++)
 311                 *t++ = *n;
 312         *t = 0;
 313 }
 314
 315 void userrec::CloseSocket()
 316 {
 317         shutdown(this->fd,2);
 318         close(this->fd);
 319 }
 320
 321 char* userrec::GetFullHost()
 322 {
 323         static char result[MAXBUF];
 324         char* t = result;
 325         for(char* n = nick; *n; n++)
 326                 *t++ = *n;
 327         *t++ = '!';
 328         for(char* n = ident; *n; n++)
 329                 *t++ = *n;
 330         *t++ = '@';
 331         for(char* n = dhost; *n; n++)
 332                 *t++ = *n;
 333         *t = 0;
 334         return result;
 335 }
 336
 337 char* userrec::MakeWildHost()
 338 {
 339         static char nresult[MAXBUF];
 340         char* t = nresult;
 341         *t++ = '*';     *t++ = '!';
 342         *t++ = '*';     *t++ = '@';
 343         for(char* n = dhost; *n; n++)
 344                 *t++ = *n;
 345         *t = 0;
 346         return nresult;
 347 }
 348
 349 int userrec::ReadData(void* buffer, size_t size)
 350 {
 351         if (this->fd > -1)
 352         {
 353                 return read(this->fd, buffer, size);
 354         }
 355         else
 356                 return 0;
 357 }
 358
 359
 360 char* userrec::GetFullRealHost()
 361 {
 362         static char fresult[MAXBUF];
 363         char* t = fresult;
 364         for(char* n = nick; *n; n++)
 365                 *t++ = *n;
 366         *t++ = '!';
 367         for(char* n = ident; *n; n++)
 368                 *t++ = *n;
 369         *t++ = '@';
 370         for(char* n = host; *n; n++)
 371                 *t++ = *n;
 372         *t = 0;
 373         return fresult;
 374 }
 375
 376 bool userrec::IsInvited(irc::string &channel)
 377 {
 378         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 379         {
 380                 irc::string compare = i->channel;
 381
 382                 if (compare == channel)
 383                 {
 384                         return true;
 385                 }
 386         }
 387         return false;
 388 }
 389
 390 InvitedList* userrec::GetInviteList()
 391 {
 392         return &invites;
 393 }
 394
 395 void userrec::InviteTo(irc::string &channel)
 396 {
 397         Invited i;
 398         i.channel = channel;
 399         invites.push_back(i);
 400 }
 401
 402 void userrec::RemoveInvite(irc::string &channel)
 403 {
 404         ServerInstance->Log(DEBUG,"Removing invites");
 405
 406         if (invites.size())
 407         {
 408                 for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 409                 {
 410                         irc::string compare = i->channel;
 411
 412                         if (compare == channel)
 413                         {
 414                                 invites.erase(i);
 415                                 return;
 416                         }
 417                 }
 418         }
 419 }
 420
 421 bool userrec::HasPermission(const std::string &command)
 422 {
 423         char* mycmd;
 424         char* savept;
 425         char* savept2;
 426
 427         /*
 428          * users on remote servers can completely bypass all permissions based checks.
 429          * This prevents desyncs when one server has different type/class tags to another.
 430          * That having been said, this does open things up to the possibility of source changes
 431          * allowing remote kills, etc - but if they have access to the src, they most likely have
 432          * access to the conf - so it's an end to a means either way.
 433          */
 434         if (!IS_LOCAL(this))
 435                 return true;
 436
 437         // are they even an oper at all?
 438         if (*this->oper)
 439         {
 440                 opertype_t::iterator iter_opertype = opertypes.find(this->oper);
 441                 if (iter_opertype != opertypes.end())
 442                 {
 443                         char* Classes = strdup(iter_opertype->second);
 444                         char* myclass = strtok_r(Classes," ",&savept);
 445                         while (myclass)
 446                         {
 447                                 operclass_t::iterator iter_operclass = operclass.find(myclass);
 448                                 if (iter_operclass != operclass.end())
 449                                 {
 450                                         char* CommandList = strdup(iter_operclass->second);
 451                                         mycmd = strtok_r(CommandList," ",&savept2);
 452                                         while (mycmd)
 453                                         {
 454                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 455                                                 {
 456                                                         free(Classes);
 457                                                         free(CommandList);
 458                                                         return true;
 459                                                 }
 460                                                 mycmd = strtok_r(NULL," ",&savept2);
 461                                         }
 462                                         free(CommandList);
 463                                 }
 464                                 myclass = strtok_r(NULL," ",&savept);
 465                         }
 466                         free(Classes);
 467                 }
 468         }
 469         return false;
 470 }
 471
 472
 473 bool userrec::AddBuffer(const std::string &a)
 474 {
 475         std::string b = "";
 476
 477         /* NB: std::string is arsey about \r and \n and tries to translate them
 478          * somehow, so we CANNOT use std::string::find() here :(
 479          */
 480         for (std::string::const_iterator i = a.begin(); i != a.end(); i++)
 481         {
 482                 if (*i != '\r')
 483                         b += *i;
 484         }
 485
 486         if (b.length())
 487                 recvq.append(b);
 488
 489         if (recvq.length() > (unsigned)this->recvqmax)
 490         {
 491                 this->SetWriteError("RecvQ exceeded");
 492                 ServerInstance->WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 493                 return false;
 494         }
 495
 496         return true;
 497 }
 498
 499 bool userrec::BufferIsReady()
 500 {
 501         return (recvq.find('\n') != std::string::npos);
 502 }
 503
 504 void userrec::ClearBuffer()
 505 {
 506         recvq = "";
 507 }
 508
 509 std::string userrec::GetBuffer()
 510 {
 511         if (!recvq.length())
 512                 return "";
 513
 514         /* Strip any leading \r or \n off the string.
 515          * Usually there are only one or two of these,
 516          * so its is computationally cheap to do.
 517          */
 518         while ((*recvq.begin() == '\r') || (*recvq.begin() == '\n'))
 519                 recvq.erase(recvq.begin());
 520
 521         for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 522         {
 523                 /* Find the first complete line, return it as the
 524                  * result, and leave the recvq as whats left
 525                  */
 526                 if (*x == '\n')
 527                 {
 528                         std::string ret = std::string(recvq.begin(), x);
 529                         recvq.erase(recvq.begin(), x + 1);
 530                         return ret;
 531                 }
 532         }
 533         return "";
 534 }
 535
 536 void userrec::AddWriteBuf(const std::string &data)
 537 {
 538         if (*this->GetWriteError())
 539                 return;
 540
 541         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 542         {
 543                 /*
 544                  * Fix by brain - Set the error text BEFORE calling writeopers, because
 545                  * if we dont it'll recursively  call here over and over again trying
 546                  * to repeatedly add the text to the sendq!
 547                  */
 548                 this->SetWriteError("SendQ exceeded");
 549                 ServerInstance->WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 550                 return;
 551         }
 552
 553         if (data.length() > 512)
 554         {
 555                 std::string newdata(data);
 556                 newdata.resize(510);
 557                 newdata.append("\r\n");
 558                 sendq.append(newdata);
 559         }
 560         else
 561         {
 562                 sendq.append(data);
 563         }
 564 }
 565
 566 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 567 void userrec::FlushWriteBuf()
 568 {
 569         if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 570         {
 571                 const char* tb = this->sendq.c_str();
 572                 int n_sent = write(this->fd,tb,this->sendq.length());
 573                 if (n_sent == -1)
 574                 {
 575                         if (errno != EAGAIN)
 576                                 this->SetWriteError(strerror(errno));
 577                 }
 578                 else
 579                 {
 580                         // advance the queue
 581                         tb += n_sent;
 582                         this->sendq = tb;
 583                         // update the user's stats counters
 584                         this->bytes_out += n_sent;
 585                         this->cmds_out++;
 586                 }
 587         }
 588 }
 589
 590 void userrec::SetWriteError(const std::string &error)
 591 {
 592         ServerInstance->Log(DEBUG,"SetWriteError: %s",error.c_str());
 593         // don't try to set the error twice, its already set take the first string.
 594         if (!this->WriteError.length())
 595         {
 596                 ServerInstance->Log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 597                 this->WriteError = error;
 598         }
 599 }
 600
 601 const char* userrec::GetWriteError()
 602 {
 603         return this->WriteError.c_str();
 604 }
 605
 606 void userrec::Oper(const std::string &opertype)
 607 {
 608         this->modes[UM_OPERATOR] = 1;
 609         this->WriteServ("MODE %s :+o", this->nick);
 610         FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 611         ServerInstance->Log(DEFAULT,"OPER: %s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 612         strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 613         ServerInstance->all_opers.push_back(this);
 614         FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype));
 615 }
 616
 617 void userrec::UnOper()
 618 {
 619         if (*this->oper)
 620         {
 621                 *this->oper = 0;
 622                 this->modes[UM_OPERATOR] = 0;
 623                 for (std::vector<userrec*>::iterator a = ServerInstance->all_opers.begin(); a < ServerInstance->all_opers.end(); a++)
 624                 {
 625                         if (*a == this)
 626                         {
 627                                 ServerInstance->Log(DEBUG,"Oper removed from optimization list");
 628                                 ServerInstance->all_opers.erase(a);
 629                                 return;
 630                         }
 631                 }
 632         }
 633 }
 634
 635 void userrec::QuitUser(InspIRCd* Instance, userrec *user,const std::string &quitreason)
 636 {
 637         user_hash::iterator iter = Instance->clientlist.find(user->nick);
 638
 639 /*
 640  * I'm pretty sure returning here is causing a desync when part of the net thinks a user is gone,
 641  * and another part doesn't. We want to broadcast the quit/kill before bailing so the net stays in sync.
 642  *
 643  * I can't imagine this blowing up, so I'm commenting it out. We still check
 644  * before playing with a bad iterator below in our if(). DISCUSS THIS BEFORE YOU DO ANYTHING. --w00t
 645  *
 646  *      if (iter == clientlist.end())
 647  *              return;
 648  */
 649         std::string reason = quitreason;
 650
 651         if (reason.length() > MAXQUIT - 1)
 652                 reason.resize(MAXQUIT - 1);
 653
 654         if (IS_LOCAL(user))
 655                 user->Write("ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason.c_str());
 656
 657         if (user->registered == REG_ALL)
 658         {
 659                 user->PurgeEmptyChannels();
 660                 FOREACH_MOD_I(Instance,I_OnUserQuit,OnUserQuit(user,reason));
 661                 user->WriteCommonExcept("QUIT :%s",reason.c_str());
 662         }
 663
 664         if (IS_LOCAL(user))
 665                 user->FlushWriteBuf();
 666
 667         FOREACH_MOD_I(Instance,I_OnUserDisconnect,OnUserDisconnect(user));
 668
 669         if (IS_LOCAL(user))
 670         {
 671                 if (Instance->Config->GetIOHook(user->GetPort()))
 672                 {
 673                         try
 674                         {
 675                                 Instance->Config->GetIOHook(user->GetPort())->OnRawSocketClose(user->fd);
 676                         }
 677                         catch (ModuleException& modexcept)
 678                         {
 679                                 Instance->Log(DEBUG,"Module exception cought: %s",modexcept.GetReason());
 680                         }
 681                 }
 682
 683                 Instance->SE->DelFd(user->fd);
 684                 user->CloseSocket();
 685         }
 686
 687         /*
 688          * this must come before the ServerInstance->WriteOpers so that it doesnt try to fill their buffer with anything
 689          * if they were an oper with +s.
 690          *
 691          * XXX -
 692          * In the current implementation, we only show local quits, as we only show local connects. With
 693          * the proposed implmentation of snomasks however, this will likely change in the (near?) future.
 694          */
 695         if (user->registered == REG_ALL)
 696         {
 697                 if (IS_LOCAL(user))
 698                         Instance->WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason.c_str());
 699                 user->AddToWhoWas();
 700         }
 701
 702         if (iter != Instance->clientlist.end())
 703         {
 704                 Instance->Log(DEBUG,"deleting user hash value %lx",(unsigned long)user);
 705                 if (IS_LOCAL(user))
 706                 {
 707                         Instance->fd_ref_table[user->fd] = NULL;
 708                         if (find(Instance->local_users.begin(),Instance->local_users.end(),user) != Instance->local_users.end())
 709                                 Instance->local_users.erase(find(Instance->local_users.begin(),Instance->local_users.end(),user));
 710                 }
 711                 Instance->clientlist.erase(iter);
 712                 DELETE(user);
 713         }
 714 }
 715
 716 namespace irc
 717 {
 718         namespace whowas
 719         {
 720
 721                 WhoWasGroup::WhoWasGroup(userrec* user) : host(NULL), dhost(NULL), ident(NULL), server(NULL), gecos(NULL), signon(user->signon)
 722                 {
 723                         this->host = strdup(user->host);
 724                         this->dhost = strdup(user->dhost);
 725                         this->ident = strdup(user->ident);
 726                         this->server = user->server;
 727                         this->gecos = strdup(user->fullname);
 728                 }
 729
 730                 WhoWasGroup::~WhoWasGroup()
 731                 {
 732                         if (host)
 733                                 free(host);
 734                         if (dhost)
 735                                 free(dhost);
 736                         if (ident)
 737                                 free(ident);
 738                         if (gecos)
 739                                 free(gecos);
 740                 }
 741
 742                 /* every hour, run this function which removes all entries over 3 days */
 743                 void MaintainWhoWas(time_t t)
 744                 {
 745                         for (whowas_users::iterator iter = ::whowas.begin(); iter != ::whowas.end(); iter++)
 746                         {
 747                                 whowas_set* n = (whowas_set*)iter->second;
 748                                 if (n->size())
 749                                 {
 750                                         while ((n->begin() != n->end()) && ((*n->begin())->signon < t - 259200)) // 3 days
 751                                         {
 752                                                 WhoWasGroup *a = *(n->begin());
 753                                                 DELETE(a);
 754                                                 n->erase(n->begin());
 755                                         }
 756                                 }
 757                         }
 758                 }
 759         };
 760 };
 761
 762 /* adds or updates an entry in the whowas list */
 763 void userrec::AddToWhoWas()
 764 {
 765         irc::whowas::whowas_users::iterator iter = whowas.find(this->nick);
 766
 767         if (iter == whowas.end())
 768         {
 769                 irc::whowas::whowas_set* n = new irc::whowas::whowas_set;
 770                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 771                 n->push_back(a);
 772                 whowas[this->nick] = n;
 773         }
 774         else
 775         {
 776                 irc::whowas::whowas_set* group = (irc::whowas::whowas_set*)iter->second;
 777
 778                 if (group->size() > 10)
 779                 {
 780                         irc::whowas::WhoWasGroup *a = (irc::whowas::WhoWasGroup*)*(group->begin());
 781                         DELETE(a);
 782                         group->pop_front();
 783                 }
 784
 785                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 786                 group->push_back(a);
 787         }
 788 }
 789
 790 /* add a client connection to the sockets list */
 791 void userrec::AddClient(InspIRCd* Instance, int socket, int port, bool iscached, insp_inaddr ip)
 792 {
 793         std::string tempnick = ConvToStr(socket) + "-unknown";
 794         user_hash::iterator iter = Instance->clientlist.find(tempnick);
 795         const char *ipaddr = insp_ntoa(ip);
 796         userrec* _new;
 797         int j = 0;
 798
 799         /*
 800          * fix by brain.
 801          * as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 802          * using one as a registered connection. As they are per fd, we can also safely assume
 803          * that we wont have collisions. Therefore, if the nick exists in the list, its only
 804          * used by a dead socket, erase the iterator so that the new client may reclaim it.
 805          * this was probably the cause of 'server ignores me when i hammer it with reconnects'
 806          * issue in earlier alphas/betas
 807          */
 808         if (iter != Instance->clientlist.end())
 809         {
 810                 userrec* goner = iter->second;
 811                 DELETE(goner);
 812                 Instance->clientlist.erase(iter);
 813         }
 814
 815         Instance->Log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr);
 816
 817         _new = new userrec(Instance);
 818         Instance->clientlist[tempnick] = _new;
 819         _new->fd = socket;
 820         strlcpy(_new->nick,tempnick.c_str(),NICKMAX-1);
 821
 822         _new->server = Instance->FindServerNamePtr(Instance->Config->ServerName);
 823         /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
 824         strcpy(_new->ident, "unknown");
 825
 826         _new->registered = REG_NONE;
 827         _new->signon = Instance->Time() + Instance->Config->dns_timeout;
 828         _new->lastping = 1;
 829
 830         Instance->Log(DEBUG,"Setting socket addresses");
 831         _new->SetSockAddr(AF_FAMILY, ipaddr, port);
 832         Instance->Log(DEBUG,"Socket addresses set.");
 833
 834         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
 835         for (const char* temp = _new->GetIPString(); *temp && j < 64; temp++, j++)
 836                 _new->dhost[j] = _new->host[j] = *temp;
 837         _new->dhost[j] = _new->host[j] = 0;
 838
 839         // set the registration timeout for this user
 840         unsigned long class_regtimeout = 90;
 841         int class_flood = 0;
 842         long class_threshold = 5;
 843         long class_sqmax = 262144;      // 256kb
 844         long class_rqmax = 4096;        // 4k
 845
 846         for (ClassVector::iterator i = Instance->Config->Classes.begin(); i != Instance->Config->Classes.end(); i++)
 847         {
 848                 if ((i->type == CC_ALLOW) && (match(ipaddr,i->host.c_str(),true)))
 849                 {
 850                         class_regtimeout = (unsigned long)i->registration_timeout;
 851                         class_flood = i->flood;
 852                         _new->pingmax = i->pingtime;
 853                         class_threshold = i->threshold;
 854                         class_sqmax = i->sendqmax;
 855                         class_rqmax = i->recvqmax;
 856                         break;
 857                 }
 858         }
 859
 860         _new->nping = Instance->Time() + _new->pingmax + Instance->Config->dns_timeout;
 861         _new->timeout = Instance->Time() + class_regtimeout;
 862         _new->flood = class_flood;
 863         _new->threshold = class_threshold;
 864         _new->sendqmax = class_sqmax;
 865         _new->recvqmax = class_rqmax;
 866
 867         Instance->fd_ref_table[socket] = _new;
 868         Instance->local_users.push_back(_new);
 869
 870         if (Instance->local_users.size() > Instance->Config->SoftLimit)
 871         {
 872                 userrec::QuitUser(Instance, _new,"No more connections allowed");
 873                 return;
 874         }
 875
 876         if (Instance->local_users.size() >= MAXCLIENTS)
 877         {
 878                 userrec::QuitUser(Instance, _new,"No more connections allowed");
 879                 return;
 880         }
 881
 882         /*
 883          * XXX -
 884          * this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 885          * its a pretty big but for the moment valid assumption:
 886          * file descriptors are handed out starting at 0, and are recycled as theyre freed.
 887          * therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 888          * irc server at once (or the irc server otherwise initiating this many connections, files etc)
 889          * which for the time being is a physical impossibility (even the largest networks dont have more
 890          * than about 10,000 users on ONE server!)
 891          */
 892         if ((unsigned)socket >= MAX_DESCRIPTORS)
 893         {
 894                 userrec::QuitUser(Instance, _new,"Server is full");
 895                 return;
 896         }
 897         char* e = Instance->XLines->matches_exception(ipaddr);
 898         if (!e)
 899         {
 900                 char* r = Instance->XLines->matches_zline(ipaddr);
 901                 if (r)
 902                 {
 903                         char reason[MAXBUF];
 904                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
 905                         userrec::QuitUser(Instance, _new,reason);
 906                         return;
 907                 }
 908         }
 909
 910         if (socket > -1)
 911         {
 912                 if (!Instance->SE->AddFd(socket,true,X_ESTAB_CLIENT))
 913                 {
 914                         userrec::QuitUser(Instance, _new, "Internal error handling connection");
 915                         return;
 916                 }
 917         }
 918
 919         _new->WriteServ("NOTICE Auth :*** Looking up your hostname...");
 920 }
 921
 922 long userrec::GlobalCloneCount()
 923 {
 924         char u1[1024];
 925         char u2[1024];
 926         long x = 0;
 927         for (user_hash::const_iterator a = ServerInstance->clientlist.begin(); a != ServerInstance->clientlist.end(); a++)
 928         {
 929                 /* We have to match ip's as strings - we don't know what protocol
 930                  * a remote user may be using
 931                  */
 932                 if (!strcasecmp(a->second->GetIPString(u1), this->GetIPString(u2)))
 933                                 x++;
 934         }
 935         return x;
 936 }
 937
 938 long userrec::LocalCloneCount()
 939 {
 940         long x = 0;
 941         for (std::vector<userrec*>::const_iterator a = ServerInstance->local_users.begin(); a != ServerInstance->local_users.end(); a++)
 942         {
 943                 userrec* comp = *a;
 944 #ifdef IPV6
 945                 /* I dont think theres any faster way of matching two ipv6 addresses than memcmp */
 946                 in6_addr* s1 = &(((sockaddr_in6*)comp->ip)->sin6_addr);
 947                 in6_addr* s2 = &(((sockaddr_in6*)this->ip)->sin6_addr);
 948                 if (!memcmp(s1->s6_addr, s2->s6_addr, sizeof(in6_addr)))
 949                         x++;
 950 #else
 951                 in_addr* s1 = &((sockaddr_in*)comp->ip)->sin_addr;
 952                 in_addr* s2 = &((sockaddr_in*)this->ip)->sin_addr;
 953                 if (s1->s_addr == s2->s_addr)
 954                         x++;
 955 #endif
 956         }
 957         return x;
 958 }
 959
 960 void userrec::FullConnect(CullList* Goners)
 961 {
 962         ServerInstance->stats->statsConnects++;
 963         this->idle_lastmsg = ServerInstance->Time();
 964
 965         ConnectClass a = this->GetClass();
 966
 967         if (a.type == CC_DENY)
 968         {
 969                 Goners->AddItem(this,"Unauthorised connection");
 970                 return;
 971         }
 972
 973         if ((*(a.pass.c_str())) && (!this->haspassed))
 974         {
 975                 Goners->AddItem(this,"Invalid password");
 976                 return;
 977         }
 978
 979         if (this->LocalCloneCount() > a.maxlocal)
 980         {
 981                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (local)");
 982                 ServerInstance->WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a.maxlocal, this->GetIPString());
 983                 return;
 984         }
 985         else if (this->GlobalCloneCount() > a.maxglobal)
 986         {
 987                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (global)");
 988                 ServerInstance->WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a.maxglobal, this->GetIPString());
 989                 return;
 990         }
 991
 992         char match_against[MAXBUF];
 993         snprintf(match_against,MAXBUF,"%s@%s", this->ident, this->host);
 994         char* e = ServerInstance->XLines->matches_exception(match_against);
 995
 996         if (!e)
 997         {
 998                 char* r = ServerInstance->XLines->matches_gline(match_against);
 999
1000                 if (r)
1001                 {
1002                         char reason[MAXBUF];
1003                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
1004                         Goners->AddItem(this, reason);
1005                         return;
1006                 }
1007
1008                 r = ServerInstance->XLines->matches_kline(match_against);
1009
1010                 if (r)
1011                 {
1012                         char reason[MAXBUF];
1013                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
1014                         Goners->AddItem(this, reason);
1015                         return;
1016                 }
1017         }
1018
1019
1020         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
1021         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
1022         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
1023         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
1024         this->WriteServ("004 %s %s %s %s %s %s", this->nick, ServerInstance->Config->ServerName, VERSION, ServerInstance->Modes->UserModeList().c_str(), ServerInstance->Modes->ChannelModeList().c_str(), ServerInstance->Modes->ParaModeList().c_str());
1025
1026         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
1027         // so i'd better split it :)
1028         std::stringstream out(ServerInstance->Config->data005);
1029         std::string token = "";
1030         std::string line5 = "";
1031         int token_counter = 0;
1032
1033         while (!out.eof())
1034         {
1035                 out >> token;
1036                 line5 = line5 + token + " ";
1037                 token_counter++;
1038
1039                 if ((token_counter >= 13) || (out.eof() == true))
1040                 {
1041                         this->WriteServ("005 %s %s:are supported by this server", this->nick, line5.c_str());
1042                         line5 = "";
1043                         token_counter = 0;
1044                 }
1045         }
1046
1047         this->ShowMOTD();
1048
1049         /*
1050          * fix 3 by brain, move registered = 7 below these so that spurious modes and host
1051          * changes dont go out onto the network and produce 'fake direction'.
1052          */
1053         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
1054         FOREACH_MOD(I_OnGlobalConnect,OnGlobalConnect(this));
1055         this->registered = REG_ALL;
1056         ServerInstance->WriteOpers("*** Client connecting on port %d: %s!%s@%s [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString());
1057 }
1058
1059 /** userrec::UpdateNick()
1060  * re-allocates a nick in the user_hash after they change nicknames,
1061  * returns a pointer to the new user as it may have moved
1062  */
1063 userrec* userrec::UpdateNickHash(const char* New)
1064 {
1065         //user_hash::iterator newnick;
1066         user_hash::iterator oldnick = ServerInstance->clientlist.find(this->nick);
1067
1068         if (!strcasecmp(this->nick,New))
1069                 return oldnick->second;
1070
1071         if (oldnick == ServerInstance->clientlist.end())
1072                 return NULL; /* doesnt exist */
1073
1074         userrec* olduser = oldnick->second;
1075         ServerInstance->clientlist[New] = olduser;
1076         ServerInstance->clientlist.erase(oldnick);
1077         return ServerInstance->clientlist[New];
1078 }
1079
1080 bool userrec::ForceNickChange(const char* newnick)
1081 {
1082         char nick[MAXBUF];
1083         int MOD_RESULT = 0;
1084
1085         *nick = 0;
1086
1087         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1088
1089         if (MOD_RESULT)
1090         {
1091                 ServerInstance->stats->statsCollisions++;
1092                 return false;
1093         }
1094
1095         if (ServerInstance->XLines->matches_qline(newnick))
1096         {
1097                 ServerInstance->stats->statsCollisions++;
1098                 return false;
1099         }
1100
1101         if (newnick)
1102         {
1103                 strlcpy(this->nick, newnick, NICKMAX - 1);
1104         }
1105         if (this->registered == REG_ALL)
1106         {
1107                 const char* pars[1];
1108                 pars[0] = nick;
1109                 std::string cmd = "NICK";
1110                 ServerInstance->Parser->CallHandler(cmd, pars, 1, this);
1111         }
1112         return true;
1113 }
1114
1115 void userrec::SetSockAddr(int protocol_family, const char* ip, int port)
1116 {
1117         switch (protocol_family)
1118         {
1119 #ifdef SUPPORT_IP6LINKS
1120                 case AF_INET6:
1121                 {
1122                         ServerInstance->Log(DEBUG,"Set inet6 protocol address");
1123                         sockaddr_in6* sin = new sockaddr_in6;
1124                         sin->sin6_family = AF_INET6;
1125                         sin->sin6_port = port;
1126                         inet_pton(AF_INET6, ip, &sin->sin6_addr);
1127                         this->ip = (sockaddr*)sin;
1128                 }
1129                 break;
1130 #endif
1131                 case AF_INET:
1132                 {
1133                         ServerInstance->Log(DEBUG,"Set inet4 protocol address");
1134                         sockaddr_in* sin = new sockaddr_in;
1135                         sin->sin_family = AF_INET;
1136                         sin->sin_port = port;
1137                         inet_pton(AF_INET, ip, &sin->sin_addr);
1138                         this->ip = (sockaddr*)sin;
1139                 }
1140                 break;
1141                 default:
1142                         ServerInstance->Log(DEBUG,"Ut oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1143                 break;
1144         }
1145 }
1146
1147 int userrec::GetPort()
1148 {
1149         if (this->ip == NULL)
1150                 return 0;
1151
1152         switch (this->GetProtocolFamily())
1153         {
1154 #ifdef SUPPORT_IP6LINKS
1155                 case AF_INET6:
1156                 {
1157                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1158                         return sin->sin6_port;
1159                 }
1160                 break;
1161 #endif
1162                 case AF_INET:
1163                 {
1164                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1165                         return sin->sin_port;
1166                 }
1167                 break;
1168                 default:
1169                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1170                 break;
1171         }
1172         return 0;
1173 }
1174
1175 int userrec::GetProtocolFamily()
1176 {
1177         if (this->ip == NULL)
1178                 return 0;
1179
1180         sockaddr_in* sin = (sockaddr_in*)this->ip;
1181         return sin->sin_family;
1182 }
1183
1184 const char* userrec::GetIPString()
1185 {
1186         static char buf[1024];
1187         static char temp[1024];
1188
1189         if (this->ip == NULL)
1190                 return "";
1191
1192         switch (this->GetProtocolFamily())
1193         {
1194 #ifdef SUPPORT_IP6LINKS
1195                 case AF_INET6:
1196                 {
1197                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1198                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1199                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1200                         if (*buf == ':')
1201                         {
1202                                 strlcpy(&temp[1], buf, sizeof(temp));
1203                                 *temp = '0';
1204                                 return temp;
1205                         }
1206                         return buf;
1207                 }
1208                 break;
1209 #endif
1210                 case AF_INET:
1211                 {
1212                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1213                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1214                         return buf;
1215                 }
1216                 break;
1217                 default:
1218                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1219                 break;
1220         }
1221         return "";
1222 }
1223
1224 const char* userrec::GetIPString(char* buf)
1225 {
1226         static char temp[1024];
1227
1228         if (this->ip == NULL)
1229         {
1230                 *buf = 0;
1231                 return buf;
1232         }
1233
1234         switch (this->GetProtocolFamily())
1235         {
1236 #ifdef SUPPORT_IP6LINKS
1237                 case AF_INET6:
1238                 {
1239                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1240                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1241                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1242                         if (*buf == ':')
1243                         {
1244                                 strlcpy(&temp[1], buf, sizeof(temp));
1245                                 *temp = '0';
1246                                 strlcpy(buf, temp, sizeof(temp));
1247                         }
1248                         return buf;
1249                 }
1250                 break;
1251 #endif
1252                 case AF_INET:
1253                 {
1254                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1255                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1256                         return buf;
1257                 }
1258                 break;
1259
1260                 default:
1261                         ServerInstance->Log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
1262                 break;
1263         }
1264         return "";
1265 }
1266
1267
1268 void userrec::Write(const std::string &text)
1269 {
1270         if ((this->fd < 0) || (this->fd > MAX_DESCRIPTORS))
1271                 return;
1272
1273         std::string crlf = text;
1274         crlf.append("\r\n");
1275
1276         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1277         {
1278                 try
1279                 {
1280                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, crlf.data(), crlf.length());
1281                 }
1282                 catch (ModuleException& modexcept)
1283                 {
1284                         ServerInstance->Log(DEBUG,"Module exception caught: %s",modexcept.GetReason());
1285                 }
1286         }
1287         else
1288         {
1289                 this->AddWriteBuf(crlf);
1290         }
1291         ServerInstance->stats->statsSent += crlf.length();
1292 }
1293
1294 /** Write()
1295  */
1296 void userrec::Write(const char *text, ...)
1297 {
1298         va_list argsPtr;
1299         char textbuffer[MAXBUF];
1300
1301         va_start(argsPtr, text);
1302         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1303         va_end(argsPtr);
1304
1305         this->Write(std::string(textbuffer));
1306 }
1307
1308 void userrec::WriteServ(const std::string& text)
1309 {
1310         char textbuffer[MAXBUF];
1311
1312         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1313         this->Write(std::string(textbuffer));
1314 }
1315
1316 /** WriteServ()
1317  *  Same as Write(), except `text' is prefixed with `:server.name '.
1318  */
1319 void userrec::WriteServ(const char* text, ...)
1320 {
1321         va_list argsPtr;
1322         char textbuffer[MAXBUF];
1323
1324         va_start(argsPtr, text);
1325         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1326         va_end(argsPtr);
1327
1328         this->WriteServ(std::string(textbuffer));
1329 }
1330
1331
1332 void userrec::WriteFrom(userrec *user, const std::string &text)
1333 {
1334         char tb[MAXBUF];
1335
1336         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1337
1338         this->Write(std::string(tb));
1339 }
1340
1341
1342 /* write text from an originating user to originating user */
1343
1344 void userrec::WriteFrom(userrec *user, const char* text, ...)
1345 {
1346         va_list argsPtr;
1347         char textbuffer[MAXBUF];
1348
1349         va_start(argsPtr, text);
1350         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1351         va_end(argsPtr);
1352
1353         this->WriteFrom(user, std::string(textbuffer));
1354 }
1355
1356
1357 /* write text to an destination user from a source user (e.g. user privmsg) */
1358
1359 void userrec::WriteTo(userrec *dest, const char *data, ...)
1360 {
1361         char textbuffer[MAXBUF];
1362         va_list argsPtr;
1363
1364         va_start(argsPtr, data);
1365         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1366         va_end(argsPtr);
1367
1368         this->WriteTo(dest, std::string(textbuffer));
1369 }
1370
1371 void userrec::WriteTo(userrec *dest, const std::string &data)
1372 {
1373         dest->WriteFrom(this, data);
1374 }
1375
1376
1377 void userrec::WriteCommon(const char* text, ...)
1378 {
1379         char textbuffer[MAXBUF];
1380         va_list argsPtr;
1381
1382         if (this->registered != REG_ALL)
1383                 return;
1384
1385         va_start(argsPtr, text);
1386         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1387         va_end(argsPtr);
1388
1389         this->WriteCommon(std::string(textbuffer));
1390 }
1391
1392 void userrec::WriteCommon(const std::string &text)
1393 {
1394         bool sent_to_at_least_one = false;
1395
1396         if (this->registered != REG_ALL)
1397                 return;
1398
1399         uniq_id++;
1400
1401         for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1402         {
1403                 ucrec *n = *v;
1404                 if (n->channel)
1405                 {
1406                         CUList *ulist= n->channel->GetUsers();
1407
1408                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1409                         {
1410                                 if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1411                                 {
1412                                         already_sent[i->second->fd] = uniq_id;
1413                                         i->second->WriteFrom(this, std::string(text));
1414                                         sent_to_at_least_one = true;
1415                                 }
1416                         }
1417                 }
1418         }
1419
1420         /*
1421          * if the user was not in any channels, no users will receive the text. Make sure the user
1422          * receives their OWN message for WriteCommon
1423          */
1424         if (!sent_to_at_least_one)
1425         {
1426                 this->WriteFrom(this,std::string(text));
1427         }
1428 }
1429
1430
1431 /* write a formatted string to all users who share at least one common
1432  * channel, NOT including the source user e.g. for use in QUIT
1433  */
1434
1435 void userrec::WriteCommonExcept(const char* text, ...)
1436 {
1437         char textbuffer[MAXBUF];
1438         va_list argsPtr;
1439
1440         va_start(argsPtr, text);
1441         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1442         va_end(argsPtr);
1443
1444         this->WriteCommonExcept(std::string(textbuffer));
1445 }
1446
1447 void userrec::WriteCommonExcept(const std::string &text)
1448 {
1449         bool quit_munge = true;
1450         char oper_quit[MAXBUF];
1451         char textbuffer[MAXBUF];
1452
1453         strlcpy(textbuffer, text.c_str(), MAXBUF);
1454
1455         if (this->registered != REG_ALL)
1456                 return;
1457
1458         uniq_id++;
1459
1460         /* TODO: We need some form of WriteCommonExcept that will send two lines, one line to
1461          * opers and the other line to non-opers, then all this hidebans and hidesplits gunk
1462          * can go byebye.
1463          */
1464         if (ServerInstance->Config->HideSplits)
1465         {
1466                 char* check = textbuffer + 6;
1467
1468                 if (!strncasecmp(textbuffer, "QUIT :",6))
1469                 {
1470                         std::stringstream split(check);
1471                         std::string server_one;
1472                         std::string server_two;
1473
1474                         split >> server_one;
1475                         split >> server_two;
1476
1477                         if ((ServerInstance->FindServerName(server_one)) && (ServerInstance->FindServerName(server_two)))
1478                         {
1479                                 strlcpy(oper_quit,textbuffer,MAXQUIT);
1480                                 strlcpy(check,"*.net *.split",MAXQUIT);
1481                                 quit_munge = true;
1482                         }
1483                 }
1484         }
1485
1486         if ((ServerInstance->Config->HideBans) && (!quit_munge))
1487         {
1488                 if ((!strncasecmp(textbuffer, "QUIT :G-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :K-Lined:",14))
1489                 || (!strncasecmp(textbuffer, "QUIT :Q-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :Z-Lined:",14)))
1490                 {
1491                         char* check = textbuffer + 13;
1492                         strlcpy(oper_quit,textbuffer,MAXQUIT);
1493                         *check = 0;  // We don't need to strlcpy, we just chop it from the :
1494                         quit_munge = true;
1495                 }
1496         }
1497
1498         for (std::vector<ucrec*>::const_iterator v = this->chans.begin(); v != this->chans.end(); v++)
1499         {
1500                 ucrec* n = *v;
1501                 if (n->channel)
1502                 {
1503                         CUList *ulist= n->channel->GetUsers();
1504
1505                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1506                         {
1507                                 if (this != i->second)
1508                                 {
1509                                         if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1510                                         {
1511                                                 already_sent[i->second->fd] = uniq_id;
1512                                                 if (quit_munge)
1513                                                         i->second->WriteFrom(this, *i->second->oper ? std::string(oper_quit) : std::string(textbuffer));
1514                                                 else
1515                                                         i->second->WriteFrom(this, std::string(textbuffer));
1516                                         }
1517                                 }
1518                         }
1519                 }
1520         }
1521
1522 }
1523
1524 void userrec::WriteWallOps(const std::string &text)
1525 {
1526         /* Does nothing if theyre not opered */
1527         if ((!*this->oper) && (IS_LOCAL(this)))
1528                 return;
1529
1530         std::string wallop = "WALLOPS :";
1531         wallop.append(text);
1532
1533         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1534         {
1535                 userrec* t = *i;
1536                 if ((IS_LOCAL(t)) && (t->modes[UM_WALLOPS]))
1537                         this->WriteTo(t,wallop);
1538         }
1539 }
1540
1541 void userrec::WriteWallOps(const char* text, ...)
1542 {
1543         char textbuffer[MAXBUF];
1544         va_list argsPtr;
1545
1546         va_start(argsPtr, text);
1547         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1548         va_end(argsPtr);
1549
1550         this->WriteWallOps(std::string(textbuffer));
1551 }
1552
1553 /* return 0 or 1 depending if users u and u2 share one or more common channels
1554  * (used by QUIT, NICK etc which arent channel specific notices)
1555  *
1556  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1557  * the first users channels then the second users channels within the outer loop,
1558  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1559  * all possible iterations). However this new function instead checks against the
1560  * channel's userlist in the inner loop which is a std::map<userrec*,userrec*>
1561  * and saves us time as we already know what pointer value we are after.
1562  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1563  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1564  */
1565 bool userrec::SharesChannelWith(userrec *other)
1566 {
1567         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1568                 return false;
1569
1570         /* Outer loop */
1571         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1572         {
1573                 /* Fetch the channel from the user */
1574                 ucrec* user_channel = *i;
1575
1576                 if (user_channel->channel)
1577                 {
1578                         /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1579                          * by replacing it with a map::find which *should* be more efficient
1580                          */
1581                         if (user_channel->channel->HasUser(other))
1582                                 return true;
1583                 }
1584         }
1585         return false;
1586 }
1587
1588 int userrec::CountChannels()
1589 {
1590         int z = 0;
1591         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1592                 if ((*i)->channel)
1593                         z++;
1594         return z;
1595 }
1596
1597 bool userrec::ChangeName(const char* gecos)
1598 {
1599         if (IS_LOCAL(this))
1600         {
1601                 int MOD_RESULT = 0;
1602                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1603                 if (MOD_RESULT)
1604                         return false;
1605                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1606         }
1607         strlcpy(this->fullname,gecos,MAXGECOS+1);
1608         return true;
1609 }
1610
1611 bool userrec::ChangeDisplayedHost(const char* host)
1612 {
1613         if (IS_LOCAL(this))
1614         {
1615                 int MOD_RESULT = 0;
1616                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host));
1617                 if (MOD_RESULT)
1618                         return false;
1619                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host));
1620         }
1621         strlcpy(this->dhost,host,63);
1622
1623         if (IS_LOCAL(this))
1624                 this->WriteServ("396 %s %s :is now your hidden host",this->nick,this->dhost);
1625
1626         return true;
1627 }
1628
1629 void userrec::NoticeAll(char* text, ...)
1630 {
1631         char textbuffer[MAXBUF];
1632         char formatbuffer[MAXBUF];
1633         va_list argsPtr;
1634
1635         va_start(argsPtr, text);
1636         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1637         va_end(argsPtr);
1638
1639         snprintf(formatbuffer,MAXBUF,"NOTICE $* :%s",textbuffer);
1640
1641         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1642         {
1643                 userrec* t = *i;
1644                 t->WriteFrom(this, std::string(formatbuffer));
1645         }
1646 }
1647
1648
1649 std::string userrec::ChannelList(userrec* source)
1650 {
1651         std::string list;
1652         for (std::vector<ucrec*>::const_iterator i = this->chans.begin(); i != this->chans.end(); i++)
1653         {
1654                 ucrec* rec = *i;
1655
1656                 if(rec->channel && rec->channel->name)
1657                 {
1658                         /* If the target is the same as the sender, let them see all their channels.
1659                          * If the channel is NOT private/secret OR the user shares a common channel
1660                          * If the user is an oper, and the <options:operspywhois> option is set.
1661                          */
1662                         if ((source == this) || (*source->oper && ServerInstance->Config->OperSpyWhois) || (((!rec->channel->modes[CM_PRIVATE]) && (!rec->channel->modes[CM_SECRET])) || (rec->channel->HasUser(source))))
1663                         {
1664                                 list.append(rec->channel->GetStatusChar(this)).append(rec->channel->name).append(" ");
1665                         }
1666                 }
1667         }
1668         return list;
1669 }
1670
1671 void userrec::SplitChanList(userrec* dest, const std::string &cl)
1672 {
1673         std::string line;
1674         std::ostringstream prefix;
1675         std::string::size_type start, pos, length;
1676
1677         prefix << ":" << ServerInstance->Config->ServerName << " 319 " << this->nick << " " << dest->nick << " :";
1678         line = prefix.str();
1679
1680         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1681         {
1682                 length = (pos == std::string::npos) ? cl.length() : pos;
1683
1684                 if (line.length() + length - start > 510)
1685                 {
1686                         this->Write(line);
1687                         line = prefix.str();
1688                 }
1689
1690                 if(pos == std::string::npos)
1691                 {
1692                         line += cl.substr(start, length - start);
1693                         break;
1694                 }
1695                 else
1696                 {
1697                         line += cl.substr(start, length - start + 1);
1698                 }
1699         }
1700
1701         if (line.length())
1702         {
1703                 this->Write(line);
1704         }
1705 }
1706
1707
1708 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1709  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1710  * then their ip will be taken as 'priority' anyway, so for example,
1711  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1712  */
1713 ConnectClass& userrec::GetClass()
1714 {
1715         for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1716         {
1717                 if ((match(this->GetIPString(),i->host.c_str(),true)) || (match(this->host,i->host.c_str())))
1718                         return *i;
1719         }
1720
1721         return *(ServerInstance->Config->Classes.begin());
1722 }
1723
1724 void userrec::PurgeEmptyChannels()
1725 {
1726         std::vector<chanrec*> to_delete;
1727
1728         // firstly decrement the count on each channel
1729         for (std::vector<ucrec*>::iterator f = this->chans.begin(); f != this->chans.end(); f++)
1730         {
1731                 ucrec* uc = *f;
1732                 if (uc->channel)
1733                 {
1734                         if (uc->channel->DelUser(this) == 0)
1735                         {
1736                                 /* No users left in here, mark it for deletion */
1737                                 to_delete.push_back(uc->channel);
1738                                 uc->channel = NULL;
1739                         }
1740                 }
1741         }
1742
1743         for (std::vector<chanrec*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1744         {
1745                 chanrec* thischan = *n;
1746                 chan_hash::iterator i2 = ServerInstance->chanlist.find(thischan->name);
1747                 if (i2 != ServerInstance->chanlist.end())
1748                 {
1749                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1750                         DELETE(i2->second);
1751                         ServerInstance->chanlist.erase(i2);
1752                 }
1753         }
1754
1755         this->UnOper();
1756 }
1757
1758 void userrec::ShowMOTD()
1759 {
1760         if (!ServerInstance->Config->MOTD.size())
1761         {
1762                 this->WriteServ("422 %s :Message of the day file is missing.",this->nick);
1763                 return;
1764         }
1765         this->WriteServ("375 %s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1766
1767         for (unsigned int i = 0; i < ServerInstance->Config->MOTD.size(); i++)
1768                 this->WriteServ("372 %s :- %s",this->nick,ServerInstance->Config->MOTD[i].c_str());
1769
1770         this->WriteServ("376 %s :End of message of the day.", this->nick);
1771 }
1772
1773 void userrec::ShowRULES()
1774 {
1775         if (!ServerInstance->Config->RULES.size())
1776         {
1777                 this->WriteServ("NOTICE %s :Rules file is missing.",this->nick);
1778                 return;
1779         }
1780         this->WriteServ("NOTICE %s :%s rules",this->nick,ServerInstance->Config->ServerName);
1781
1782         for (unsigned int i = 0; i < ServerInstance->Config->RULES.size(); i++)
1783                 this->WriteServ("NOTICE %s :%s",this->nick,ServerInstance->Config->RULES[i].c_str());
1784
1785         this->WriteServ("NOTICE %s :End of %s rules.",this->nick,ServerInstance->Config->ServerName);
1786 }
1787