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