src/users.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include "configreader.h"
  15 #include "channels.h"
  16 #include "users.h"
  17 #include "inspircd.h"
  18 #include <stdarg.h>
  19 #include "socketengine.h"
  20 #include "wildcard.h"
  21 #include "xline.h"
  22 #include "commands/cmd_whowas.h"
  23
  24 static unsigned long already_sent[MAX_DESCRIPTORS] = {0};
  25
  26 /* XXX: Used for speeding up WriteCommon operations */
  27 unsigned long uniq_id = 0;
  28
  29 bool InitTypes(ServerConfig* conf, const char* tag)
  30 {
  31         if (conf->opertypes.size())
  32         {
  33                 for (opertype_t::iterator n = conf->opertypes.begin(); n != conf->opertypes.end(); n++)
  34                 {
  35                         if (n->second)
  36                                 delete[] n->second;
  37                 }
  38         }
  39
  40         conf->opertypes.clear();
  41         return true;
  42 }
  43
  44 bool InitClasses(ServerConfig* conf, const char* tag)
  45 {
  46         if (conf->operclass.size())
  47         {
  48                 for (operclass_t::iterator n = conf->operclass.begin(); n != conf->operclass.end(); n++)
  49                 {
  50                         if (n->second)
  51                                 delete[] n->second;
  52                 }
  53         }
  54
  55         conf->operclass.clear();
  56         return true;
  57 }
  58
  59 bool DoType(ServerConfig* conf, const char* tag, char** entries, ValueList &values, int* types)
  60 {
  61         const char* TypeName = values[0].GetString();
  62         const char* Classes = values[1].GetString();
  63
  64         conf->opertypes[TypeName] = strdup(Classes);
  65         return true;
  66 }
  67
  68 bool DoClass(ServerConfig* conf, const char* tag, char** entries, ValueList &values, int* types)
  69 {
  70         const char* ClassName = values[0].GetString();
  71         const char* CommandList = values[1].GetString();
  72
  73         conf->operclass[ClassName] = strdup(CommandList);
  74         return true;
  75 }
  76
  77 bool DoneClassesAndTypes(ServerConfig* conf, const char* tag)
  78 {
  79         return true;
  80 }
  81
  82 std::string userrec::ProcessNoticeMasks(const char *sm)
  83 {
  84         bool adding = true, oldadding = false;
  85         const char *c = sm;
  86         std::string output;
  87
  88         while (c && *c)
  89         {
  90                 switch (*c)
  91                 {
  92                         case '+':
  93                                 adding = true;
  94                         break;
  95                         case '-':
  96                                 adding = false;
  97                         break;
  98                         case '*':
  99                                 for (unsigned char d = 'A'; d <= 'z'; d++)
 100                                 {
 101                                         if (ServerInstance->SNO->IsEnabled(d))
 102                                         {
 103                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
 104                                                 {
 105                                                         if ((oldadding != adding) || (!output.length()))
 106                                                                 output += (adding ? '+' : '-');
 107
 108                                                         this->SetNoticeMask(d, adding);
 109
 110                                                         output += d;
 111                                                 }
 112                                         }
 113                                         oldadding = adding;
 114                                 }
 115                         break;
 116                         default:
 117                                 if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c)))
 118                                 {
 119                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
 120                                         {
 121                                                 if ((oldadding != adding) || (!output.length()))
 122                                                         output += (adding ? '+' : '-');
 123
 124                                                 this->SetNoticeMask(*c, adding);
 125
 126                                                 output += *c;
 127                                         }
 128                                 }
 129                                 oldadding = adding;
 130                         break;
 131                 }
 132
 133                 *c++;
 134         }
 135
 136         return output;
 137 }
 138
 139 void userrec::StartDNSLookup()
 140 {
 141         try
 142         {
 143                 bool cached;
 144                 const char* ip = this->GetIPString();
 145
 146                 /* Special case for 4in6 (Have i mentioned i HATE 4in6?) */
 147                 if (!strncmp(ip, "0::ffff:", 8))
 148                         res_reverse = new UserResolver(this->ServerInstance, this, ip + 8, DNS_QUERY_PTR4, cached);
 149                 else
 150                         res_reverse = new UserResolver(this->ServerInstance, this, ip, this->GetProtocolFamily() == AF_INET ? DNS_QUERY_PTR4 : DNS_QUERY_PTR6, cached);
 151
 152                 this->ServerInstance->AddResolver(res_reverse, cached);
 153         }
 154         catch (CoreException& e)
 155         {
 156                 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
 157         }
 158 }
 159
 160 UserResolver::UserResolver(InspIRCd* Instance, userrec* user, std::string to_resolve, QueryType qt, bool &cache) :
 161         Resolver(Instance, to_resolve, qt, cache), bound_user(user)
 162 {
 163         this->fwd = (qt == DNS_QUERY_A || qt == DNS_QUERY_AAAA);
 164         this->bound_fd = user->GetFd();
 165 }
 166
 167 void UserResolver::OnLookupComplete(const std::string &result, unsigned int ttl, bool cached)
 168 {
 169         if ((!this->fwd) && (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user))
 170         {
 171                 this->bound_user->stored_host = result;
 172                 try
 173                 {
 174                         /* Check we didnt time out */
 175                         if (this->bound_user->registered != REG_ALL)
 176                         {
 177                                 bool cached;
 178 #ifdef IPV6
 179                                 if (this->bound_user->GetProtocolFamily() == AF_INET6)
 180                                 {
 181                                         /* IPV6 forward lookup (with possibility of 4in6) */
 182                                         const char* ip = this->bound_user->GetIPString();
 183                                         bound_user->res_forward = new UserResolver(this->ServerInstance, this->bound_user, result, (!strncmp(ip, "0::ffff:", 8) ? DNS_QUERY_A : DNS_QUERY_AAAA), cached);
 184                                 }
 185                                 else
 186                                 {
 187                                         /* IPV4 lookup (mixed protocol mode) */
 188                                         bound_user->res_forward = new UserResolver(this->ServerInstance, this->bound_user, result, DNS_QUERY_A, cached);
 189                                 }
 190 #else
 191                                 /* IPV4 lookup (ipv4 only mode) */
 192                                 bound_user->res_forward = new UserResolver(this->ServerInstance, this->bound_user, result, DNS_QUERY_A, cached);
 193 #endif
 194                                 this->ServerInstance->AddResolver(bound_user->res_forward, cached);
 195                         }
 196                 }
 197                 catch (CoreException& e)
 198                 {
 199                         ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
 200                 }
 201         }
 202         else if ((this->fwd) && (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user))
 203         {
 204                 /* Both lookups completed */
 205                 std::string result2 = "0::ffff:";
 206                 result2.append(result);
 207                 if (this->bound_user->GetIPString() == result || this->bound_user->GetIPString() == result2)
 208                 {
 209                         std::string hostname = this->bound_user->stored_host;
 210                         if (hostname.length() < 65)
 211                         {
 212                                 /* Check we didnt time out */
 213                                 if ((this->bound_user->registered != REG_ALL) && (!this->bound_user->dns_done))
 214                                 {
 215                                         /* Hostnames starting with : are not a good thing (tm) */
 216                                         if (*(hostname.c_str()) == ':')
 217                                                 hostname = "0" + hostname;
 218
 219                                         this->bound_user->WriteServ("NOTICE Auth :*** Found your hostname (%s)%s", hostname.c_str(), (cached ? " -- cached" : ""));
 220                                         this->bound_user->dns_done = true;
 221                                         strlcpy(this->bound_user->dhost, hostname.c_str(),64);
 222                                         strlcpy(this->bound_user->host, hostname.c_str(),64);
 223                                         /* Invalidate cache */
 224                                         this->bound_user->InvalidateCache();
 225                                 }
 226                         }
 227                         else
 228                         {
 229                                 if (!this->bound_user->dns_done)
 230                                 {
 231                                         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());
 232                                         this->bound_user->dns_done = true;
 233                                 }
 234                         }
 235                 }
 236                 else
 237                 {
 238                         if (!this->bound_user->dns_done)
 239                         {
 240                                 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());
 241                                 this->bound_user->dns_done = true;
 242                         }
 243                 }
 244         }
 245 }
 246
 247 void UserResolver::OnError(ResolverError e, const std::string &errormessage)
 248 {
 249         if (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user)
 250         {
 251                 /* Since dns timeout is implemented outside of the resolver, this was a race condition that could result in this message being sent *after*
 252                  * the user was fully connected. This check fixes that issue  - Special */
 253                 if (!this->bound_user->dns_done)
 254                 {
 255                         /* Error message here */
 256                         this->bound_user->WriteServ("NOTICE Auth :*** Could not resolve your hostname: %s; using your IP address (%s) instead.", errormessage.c_str(), this->bound_user->GetIPString());
 257                         this->bound_user->dns_done = true;
 258                 }
 259         }
 260 }
 261
 262
 263 bool userrec::IsNoticeMaskSet(unsigned char sm)
 264 {
 265         return (snomasks[sm-65]);
 266 }
 267
 268 void userrec::SetNoticeMask(unsigned char sm, bool value)
 269 {
 270         snomasks[sm-65] = value;
 271 }
 272
 273 const char* userrec::FormatNoticeMasks()
 274 {
 275         static char data[MAXBUF];
 276         int offset = 0;
 277
 278         for (int n = 0; n < 64; n++)
 279         {
 280                 if (snomasks[n])
 281                         data[offset++] = n+65;
 282         }
 283
 284         data[offset] = 0;
 285         return data;
 286 }
 287
 288
 289
 290 bool userrec::IsModeSet(unsigned char m)
 291 {
 292         return (modes[m-65]);
 293 }
 294
 295 void userrec::SetMode(unsigned char m, bool value)
 296 {
 297         modes[m-65] = value;
 298 }
 299
 300 const char* userrec::FormatModes()
 301 {
 302         static char data[MAXBUF];
 303         int offset = 0;
 304         for (int n = 0; n < 64; n++)
 305         {
 306                 if (modes[n])
 307                         data[offset++] = n+65;
 308         }
 309         data[offset] = 0;
 310         return data;
 311 }
 312
 313 void userrec::DecrementModes()
 314 {
 315         for (int n = 0; n < 64; n++)
 316         {
 317                 if (modes[n])
 318                 {
 319                         ModeHandler* mh = ServerInstance->Modes->FindMode(n+65, MODETYPE_USER);
 320                         if (mh)
 321                                 mh->ChangeCount(-1);
 322                 }
 323         }
 324 }
 325
 326 userrec::userrec(InspIRCd* Instance) : ServerInstance(Instance)
 327 {
 328         // the PROPER way to do it, AVOID bzero at *ALL* costs
 329         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = 0;
 330         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 331         reset_due = ServerInstance->Time();
 332         age = ServerInstance->Time(true);
 333         lines_in = lastping = signon = idle_lastmsg = nping = registered = 0;
 334         ChannelCount = timeout = flood = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 335         muted = exempt = haspassed = dns_done = false;
 336         fd = -1;
 337         recvq = "";
 338         sendq = "";
 339         WriteError = "";
 340         res_forward = res_reverse = NULL;
 341         ip = NULL;
 342         chans.clear();
 343         invites.clear();
 344         memset(modes,0,sizeof(modes));
 345         memset(snomasks,0,sizeof(snomasks));
 346         /* Invalidate cache */
 347         operquit = cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 348 }
 349
 350 userrec::~userrec()
 351 {
 352         this->InvalidateCache();
 353         this->DecrementModes();
 354         if (operquit)
 355                 free(operquit);
 356         if (ip)
 357         {
 358                 clonemap::iterator x = ServerInstance->local_clones.find(this->GetIPString());
 359                 if (x != ServerInstance->local_clones.end())
 360                 {
 361                         x->second--;
 362                         if (!x->second)
 363                         {
 364                                 ServerInstance->local_clones.erase(x);
 365                         }
 366                 }
 367
 368                 clonemap::iterator y = ServerInstance->global_clones.find(this->GetIPString());
 369                 if (y != ServerInstance->global_clones.end())
 370                 {
 371                         y->second--;
 372                         if (!y->second)
 373                         {
 374                                 ServerInstance->global_clones.erase(y);
 375                         }
 376                 }
 377
 378                 if (this->GetProtocolFamily() == AF_INET)
 379                 {
 380                         delete (sockaddr_in*)ip;
 381                 }
 382 #ifdef SUPPORT_IP6LINKS
 383                 else
 384                 {
 385                         delete (sockaddr_in6*)ip;
 386                 }
 387 #endif
 388         }
 389 }
 390
 391 char* userrec::MakeHost()
 392 {
 393         if (this->cached_makehost)
 394                 return this->cached_makehost;
 395
 396         char nhost[MAXBUF];
 397         /* This is much faster than snprintf */
 398         char* t = nhost;
 399         for(char* n = ident; *n; n++)
 400                 *t++ = *n;
 401         *t++ = '@';
 402         for(char* n = host; *n; n++)
 403                 *t++ = *n;
 404         *t = 0;
 405
 406         this->cached_makehost = strdup(nhost);
 407
 408         return this->cached_makehost;
 409 }
 410
 411 char* userrec::MakeHostIP()
 412 {
 413         if (this->cached_hostip)
 414                 return this->cached_hostip;
 415
 416         char ihost[MAXBUF];
 417         /* This is much faster than snprintf */
 418         char* t = ihost;
 419         for(char* n = ident; *n; n++)
 420                 *t++ = *n;
 421         *t++ = '@';
 422         for(const char* n = this->GetIPString(); *n; n++)
 423                 *t++ = *n;
 424         *t = 0;
 425
 426         this->cached_hostip = strdup(ihost);
 427
 428         return this->cached_hostip;
 429 }
 430
 431 void userrec::CloseSocket()
 432 {
 433         shutdown(this->fd,2);
 434         close(this->fd);
 435 }
 436
 437 char* userrec::GetFullHost()
 438 {
 439         if (this->cached_fullhost)
 440                 return this->cached_fullhost;
 441
 442         char result[MAXBUF];
 443         char* t = result;
 444         for(char* n = nick; *n; n++)
 445                 *t++ = *n;
 446         *t++ = '!';
 447         for(char* n = ident; *n; n++)
 448                 *t++ = *n;
 449         *t++ = '@';
 450         for(char* n = dhost; *n; n++)
 451                 *t++ = *n;
 452         *t = 0;
 453
 454         this->cached_fullhost = strdup(result);
 455
 456         return this->cached_fullhost;
 457 }
 458
 459 char* userrec::MakeWildHost()
 460 {
 461         static char nresult[MAXBUF];
 462         char* t = nresult;
 463         *t++ = '*';     *t++ = '!';
 464         *t++ = '*';     *t++ = '@';
 465         for(char* n = dhost; *n; n++)
 466                 *t++ = *n;
 467         *t = 0;
 468         return nresult;
 469 }
 470
 471 int userrec::ReadData(void* buffer, size_t size)
 472 {
 473         if (IS_LOCAL(this))
 474         {
 475                 return read(this->fd, buffer, size);
 476         }
 477         else
 478                 return 0;
 479 }
 480
 481
 482 char* userrec::GetFullRealHost()
 483 {
 484         if (this->cached_fullrealhost)
 485                 return this->cached_fullrealhost;
 486
 487         char fresult[MAXBUF];
 488         char* t = fresult;
 489         for(char* n = nick; *n; n++)
 490                 *t++ = *n;
 491         *t++ = '!';
 492         for(char* n = ident; *n; n++)
 493                 *t++ = *n;
 494         *t++ = '@';
 495         for(char* n = host; *n; n++)
 496                 *t++ = *n;
 497         *t = 0;
 498
 499         this->cached_fullrealhost = strdup(fresult);
 500
 501         return this->cached_fullrealhost;
 502 }
 503
 504 bool userrec::IsInvited(const irc::string &channel)
 505 {
 506         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 507         {
 508                 if (channel == *i)
 509                 {
 510                         return true;
 511                 }
 512         }
 513         return false;
 514 }
 515
 516 InvitedList* userrec::GetInviteList()
 517 {
 518         return &invites;
 519 }
 520
 521 void userrec::InviteTo(const irc::string &channel)
 522 {
 523         invites.push_back(channel);
 524 }
 525
 526 void userrec::RemoveInvite(const irc::string &channel)
 527 {
 528         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 529         {
 530                 if (channel == *i)
 531                 {
 532                         invites.erase(i);
 533                         return;
 534                 }
 535         }
 536 }
 537
 538 bool userrec::HasPermission(const std::string &command)
 539 {
 540         char* mycmd;
 541         char* savept;
 542         char* savept2;
 543
 544         /*
 545          * users on remote servers can completely bypass all permissions based checks.
 546          * This prevents desyncs when one server has different type/class tags to another.
 547          * That having been said, this does open things up to the possibility of source changes
 548          * allowing remote kills, etc - but if they have access to the src, they most likely have
 549          * access to the conf - so it's an end to a means either way.
 550          */
 551         if (!IS_LOCAL(this))
 552                 return true;
 553
 554         // are they even an oper at all?
 555         if (*this->oper)
 556         {
 557                 opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper);
 558                 if (iter_opertype != ServerInstance->Config->opertypes.end())
 559                 {
 560                         char* Classes = strdup(iter_opertype->second);
 561                         char* myclass = strtok_r(Classes," ",&savept);
 562                         while (myclass)
 563                         {
 564                                 operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass);
 565                                 if (iter_operclass != ServerInstance->Config->operclass.end())
 566                                 {
 567                                         char* CommandList = strdup(iter_operclass->second);
 568                                         mycmd = strtok_r(CommandList," ",&savept2);
 569                                         while (mycmd)
 570                                         {
 571                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 572                                                 {
 573                                                         free(Classes);
 574                                                         free(CommandList);
 575                                                         return true;
 576                                                 }
 577                                                 mycmd = strtok_r(NULL," ",&savept2);
 578                                         }
 579                                         free(CommandList);
 580                                 }
 581                                 myclass = strtok_r(NULL," ",&savept);
 582                         }
 583                         free(Classes);
 584                 }
 585         }
 586         return false;
 587 }
 588
 589 /** NOTE: We cannot pass a const reference to this method.
 590  * The string is changed by the workings of the method,
 591  * so that if we pass const ref, we end up copying it to
 592  * something we can change anyway. Makes sense to just let
 593  * the compiler do that copy for us.
 594  */
 595 bool userrec::AddBuffer(std::string a)
 596 {
 597         try
 598         {
 599                 std::string::size_type i = a.rfind('\r');
 600
 601                 while (i != std::string::npos)
 602                 {
 603                         a.erase(i, 1);
 604                         i = a.rfind('\r');
 605                 }
 606
 607                 if (a.length())
 608                         recvq.append(a);
 609
 610                 if (recvq.length() > (unsigned)this->recvqmax)
 611                 {
 612                         this->SetWriteError("RecvQ exceeded");
 613                         ServerInstance->WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 614                         return false;
 615                 }
 616
 617                 return true;
 618         }
 619
 620         catch (...)
 621         {
 622                 ServerInstance->Log(DEBUG,"Exception in userrec::AddBuffer()");
 623                 return false;
 624         }
 625 }
 626
 627 bool userrec::BufferIsReady()
 628 {
 629         return (recvq.find('\n') != std::string::npos);
 630 }
 631
 632 void userrec::ClearBuffer()
 633 {
 634         recvq = "";
 635 }
 636
 637 std::string userrec::GetBuffer()
 638 {
 639         try
 640         {
 641                 if (!recvq.length())
 642                         return "";
 643
 644                 /* Strip any leading \r or \n off the string.
 645                  * Usually there are only one or two of these,
 646                  * so its is computationally cheap to do.
 647                  */
 648                 while ((*recvq.begin() == '\r') || (*recvq.begin() == '\n'))
 649                         recvq.erase(recvq.begin());
 650
 651                 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 652                 {
 653                         /* Find the first complete line, return it as the
 654                          * result, and leave the recvq as whats left
 655                          */
 656                         if (*x == '\n')
 657                         {
 658                                 std::string ret = std::string(recvq.begin(), x);
 659                                 recvq.erase(recvq.begin(), x + 1);
 660                                 return ret;
 661                         }
 662                 }
 663                 return "";
 664         }
 665
 666         catch (...)
 667         {
 668                 ServerInstance->Log(DEBUG,"Exception in userrec::GetBuffer()");
 669                 return "";
 670         }
 671 }
 672
 673 void userrec::AddWriteBuf(const std::string &data)
 674 {
 675         if (*this->GetWriteError())
 676                 return;
 677
 678         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 679         {
 680                 /*
 681                  * Fix by brain - Set the error text BEFORE calling writeopers, because
 682                  * if we dont it'll recursively  call here over and over again trying
 683                  * to repeatedly add the text to the sendq!
 684                  */
 685                 this->SetWriteError("SendQ exceeded");
 686                 ServerInstance->WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 687                 return;
 688         }
 689
 690         try
 691         {
 692                 if (data.length() > 512)
 693                         sendq.append(data.substr(0,510)).append("\r\n");
 694                 else
 695                         sendq.append(data);
 696         }
 697         catch (...)
 698         {
 699                 this->SetWriteError("SendQ exceeded");
 700                 ServerInstance->WriteOpers("*** User %s SendQ got an exception",this->nick);
 701         }
 702 }
 703
 704 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 705 void userrec::FlushWriteBuf()
 706 {
 707         try
 708         {
 709                 if ((this->fd == FD_MAGIC_NUMBER) || (*this->GetWriteError()))
 710                 {
 711                         sendq = "";
 712                 }
 713                 if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 714                 {
 715                         int old_sendq_length = sendq.length();
 716                         int n_sent = write(this->fd, this->sendq.data(), this->sendq.length());
 717                         if (n_sent == -1)
 718                         {
 719                                 if (errno == EAGAIN)
 720                                 {
 721                                         /* The socket buffer is full. This isnt fatal,
 722                                          * try again later.
 723                                          */
 724                                         this->ServerInstance->SE->WantWrite(this);
 725                                 }
 726                                 else
 727                                 {
 728                                         /* Fatal error, set write error and bail
 729                                          */
 730                                         this->SetWriteError(strerror(errno));
 731                                         return;
 732                                 }
 733                         }
 734                         else
 735                         {
 736                                 /* advance the queue */
 737                                 if (n_sent)
 738                                         this->sendq = this->sendq.substr(n_sent);
 739                                 /* update the user's stats counters */
 740                                 this->bytes_out += n_sent;
 741                                 this->cmds_out++;
 742                                 if (n_sent != old_sendq_length)
 743                                         this->ServerInstance->SE->WantWrite(this);
 744                         }
 745                 }
 746         }
 747
 748         catch (...)
 749         {
 750                 ServerInstance->Log(DEBUG,"Exception in userrec::FlushWriteBuf()");
 751         }
 752
 753         if (this->sendq.empty())
 754         {
 755                 FOREACH_MOD(I_OnBufferFlushed,OnBufferFlushed(this));
 756         }
 757 }
 758
 759 void userrec::SetWriteError(const std::string &error)
 760 {
 761         try
 762         {
 763                 // don't try to set the error twice, its already set take the first string.
 764                 if (this->WriteError.empty())
 765                         this->WriteError = error;
 766         }
 767
 768         catch (...)
 769         {
 770                 ServerInstance->Log(DEBUG,"Exception in userrec::SetWriteError()");
 771         }
 772 }
 773
 774 const char* userrec::GetWriteError()
 775 {
 776         return this->WriteError.c_str();
 777 }
 778
 779 void userrec::Oper(const std::string &opertype)
 780 {
 781         try
 782         {
 783                 this->modes[UM_OPERATOR] = 1;
 784                 this->WriteServ("MODE %s :+o", this->nick);
 785                 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 786                 ServerInstance->Log(DEFAULT,"OPER: %s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 787                 strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 788                 ServerInstance->all_opers.push_back(this);
 789                 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype));
 790         }
 791
 792         catch (...)
 793         {
 794                 ServerInstance->Log(DEBUG,"Exception in userrec::Oper()");
 795         }
 796 }
 797
 798 void userrec::UnOper()
 799 {
 800         try
 801         {
 802                 if (*this->oper)
 803                 {
 804                         *this->oper = 0;
 805                         this->modes[UM_OPERATOR] = 0;
 806                         for (std::vector<userrec*>::iterator a = ServerInstance->all_opers.begin(); a < ServerInstance->all_opers.end(); a++)
 807                         {
 808                                 if (*a == this)
 809                                 {
 810                                         ServerInstance->all_opers.erase(a);
 811                                         return;
 812                                 }
 813                         }
 814                 }
 815         }
 816
 817         catch (...)
 818         {
 819                 ServerInstance->Log(DEBUG,"Exception in userrec::UnOper()");
 820         }
 821 }
 822
 823 void userrec::QuitUser(InspIRCd* Instance, userrec *user, const std::string &quitreason, const char* operreason)
 824 {
 825         user->muted = true;
 826         Instance->GlobalCulls.AddItem(user, quitreason.c_str(), operreason);
 827 }
 828
 829 /* adds or updates an entry in the whowas list */
 830 void userrec::AddToWhoWas()
 831 {
 832         command_t* whowas_command = ServerInstance->Parser->GetHandler("WHOWAS");
 833         if (whowas_command)
 834         {
 835                 std::deque<classbase*> params;
 836                 params.push_back(this);
 837                 whowas_command->HandleInternal(WHOWAS_ADD, params);
 838         }
 839 }
 840
 841 /* add a client connection to the sockets list */
 842 void userrec::AddClient(InspIRCd* Instance, int socket, int port, bool iscached, int socketfamily, sockaddr* ip)
 843 {
 844         std::string tempnick = ConvToStr(socket) + "-unknown";
 845         user_hash::iterator iter = Instance->clientlist->find(tempnick);
 846         char ipaddr[MAXBUF];
 847 #ifdef IPV6
 848         if (socketfamily == AF_INET6)
 849                 inet_ntop(AF_INET6, &((const sockaddr_in6*)ip)->sin6_addr, ipaddr, sizeof(ipaddr));
 850         else
 851                 inet_ntop(AF_INET, &((const sockaddr_in*)ip)->sin_addr, ipaddr, sizeof(ipaddr));
 852 #else
 853         inet_ntop(AF_INET, &((const sockaddr_in*)ip)->sin_addr, ipaddr, sizeof(ipaddr));
 854 #endif
 855         userrec* New;
 856         int j = 0;
 857
 858         Instance->unregistered_count++;
 859
 860         /*
 861          * fix by brain.
 862          * as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 863          * using one as a registered connection. As they are per fd, we can also safely assume
 864          * that we wont have collisions. Therefore, if the nick exists in the list, its only
 865          * used by a dead socket, erase the iterator so that the new client may reclaim it.
 866          * this was probably the cause of 'server ignores me when i hammer it with reconnects'
 867          * issue in earlier alphas/betas
 868          */
 869         if (iter != Instance->clientlist->end())
 870         {
 871                 userrec* goner = iter->second;
 872                 DELETE(goner);
 873                 Instance->clientlist->erase(iter);
 874         }
 875
 876         New = new userrec(Instance);
 877         (*(Instance->clientlist))[tempnick] = New;
 878         New->fd = socket;
 879         strlcpy(New->nick,tempnick.c_str(),NICKMAX-1);
 880
 881         New->server = Instance->FindServerNamePtr(Instance->Config->ServerName);
 882         /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
 883         strcpy(New->ident, "unknown");
 884
 885         New->registered = REG_NONE;
 886         New->signon = Instance->Time() + Instance->Config->dns_timeout;
 887         New->lastping = 1;
 888
 889         New->SetSockAddr(socketfamily, ipaddr, port);
 890
 891         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
 892         for (const char* temp = New->GetIPString(); *temp && j < 64; temp++, j++)
 893                 New->dhost[j] = New->host[j] = *temp;
 894         New->dhost[j] = New->host[j] = 0;
 895
 896         Instance->AddLocalClone(New);
 897         Instance->AddGlobalClone(New);
 898
 899         ConnectClass* i = New->GetClass();
 900
 901         if ((!i) || (i->GetType() == CC_DENY))
 902         {
 903                 userrec::QuitUser(Instance, New,"Unauthorised connection");
 904                 return;
 905         }
 906
 907         New->pingmax = i->GetPingTime();
 908         New->nping = Instance->Time() + i->GetPingTime() + Instance->Config->dns_timeout;
 909         New->timeout = Instance->Time() + i->GetRegTimeout();
 910         New->flood = i->GetFlood();
 911         New->threshold = i->GetThreshold();
 912         New->sendqmax = i->GetSendqMax();
 913         New->recvqmax = i->GetRecvqMax();
 914
 915         Instance->local_users.push_back(New);
 916
 917         if ((Instance->local_users.size() > Instance->Config->SoftLimit) || (Instance->local_users.size() >= MAXCLIENTS))
 918         {
 919                 Instance->WriteOpers("*** Warning: softlimit value has been reached: %d clients", Instance->Config->SoftLimit);
 920                 userrec::QuitUser(Instance, New,"No more connections allowed");
 921                 return;
 922         }
 923
 924         /*
 925          * XXX -
 926          * this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 927          * its a pretty big but for the moment valid assumption:
 928          * file descriptors are handed out starting at 0, and are recycled as theyre freed.
 929          * therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 930          * irc server at once (or the irc server otherwise initiating this many connections, files etc)
 931          * which for the time being is a physical impossibility (even the largest networks dont have more
 932          * than about 10,000 users on ONE server!)
 933          */
 934         if ((unsigned int)socket >= MAX_DESCRIPTORS)
 935         {
 936                 userrec::QuitUser(Instance, New, "Server is full");
 937                 return;
 938         }
 939
 940         New->exempt = (Instance->XLines->matches_exception(New) != NULL);
 941         if (!New->exempt)
 942         {
 943                 ZLine* r = Instance->XLines->matches_zline(ipaddr);
 944                 if (r)
 945                 {
 946                         char reason[MAXBUF];
 947                         snprintf(reason,MAXBUF,"Z-Lined: %s",r->reason);
 948                         userrec::QuitUser(Instance, New, reason);
 949                         return;
 950                 }
 951         }
 952
 953         if (socket > -1)
 954         {
 955                 if (!Instance->SE->AddFd(New))
 956                 {
 957                         userrec::QuitUser(Instance, New, "Internal error handling connection");
 958                         return;
 959                 }
 960         }
 961
 962         /* NOTE: even if dns lookups are *off*, we still need to display this.
 963          * BOPM and other stuff requires it.
 964          */
 965         New->WriteServ("NOTICE Auth :*** Looking up your hostname...");
 966 }
 967
 968 unsigned long userrec::GlobalCloneCount()
 969 {
 970         clonemap::iterator x = ServerInstance->global_clones.find(this->GetIPString());
 971         if (x != ServerInstance->global_clones.end())
 972                 return x->second;
 973         else
 974                 return 0;
 975 }
 976
 977 unsigned long userrec::LocalCloneCount()
 978 {
 979         clonemap::iterator x = ServerInstance->local_clones.find(this->GetIPString());
 980         if (x != ServerInstance->local_clones.end())
 981                 return x->second;
 982         else
 983                 return 0;
 984 }
 985
 986 void userrec::FullConnect()
 987 {
 988         ServerInstance->stats->statsConnects++;
 989         this->idle_lastmsg = ServerInstance->Time();
 990
 991         ConnectClass* a = this->GetClass();
 992
 993         if ((!a) || (a->GetType() == CC_DENY))
 994         {
 995                 this->muted = true;
 996                 ServerInstance->GlobalCulls.AddItem(this,"Unauthorised connection");
 997                 return;
 998         }
 999
1000         if ((!a->GetPass().empty()) && (!this->haspassed))
1001         {
1002                 this->muted = true;
1003                 ServerInstance->GlobalCulls.AddItem(this,"Invalid password");
1004                 return;
1005         }
1006
1007         if (this->LocalCloneCount() > a->GetMaxLocal())
1008         {
1009                 this->muted = true;
1010                 ServerInstance->GlobalCulls.AddItem(this, "No more connections allowed from your host via this connect class (local)");
1011                 ServerInstance->WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
1012                 return;
1013         }
1014         else if (this->GlobalCloneCount() > a->GetMaxGlobal())
1015         {
1016                 this->muted = true;
1017                 ServerInstance->GlobalCulls.AddItem(this, "No more connections allowed from your host via this connect class (global)");
1018                 ServerInstance->WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a->GetMaxGlobal(), this->GetIPString());
1019                 return;
1020         }
1021
1022         if (!this->exempt)
1023         {
1024                 GLine* r = ServerInstance->XLines->matches_gline(this);
1025
1026                 if (r)
1027                 {
1028                         this->muted = true;
1029                         char reason[MAXBUF];
1030                         snprintf(reason,MAXBUF,"G-Lined: %s",r->reason);
1031                         ServerInstance->GlobalCulls.AddItem(this, reason);
1032                         return;
1033                 }
1034
1035                 KLine* n = ServerInstance->XLines->matches_kline(this);
1036
1037                 if (n)
1038                 {
1039                         this->muted = true;
1040                         char reason[MAXBUF];
1041                         snprintf(reason,MAXBUF,"K-Lined: %s",n->reason);
1042                         ServerInstance->GlobalCulls.AddItem(this, reason);
1043                         return;
1044                 }
1045
1046         }
1047
1048         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
1049         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
1050         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
1051         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
1052         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());
1053
1054         ServerInstance->Config->Send005(this);
1055
1056         this->ShowMOTD();
1057
1058         /* Now registered */
1059         if (ServerInstance->unregistered_count)
1060                 ServerInstance->unregistered_count--;
1061
1062         /*
1063          * fix 3 by brain, move registered = 7 below these so that spurious modes and host
1064          * changes dont go out onto the network and produce 'fake direction'.
1065          */
1066         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
1067
1068         this->registered = REG_ALL;
1069
1070         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
1071
1072         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString());
1073 }
1074
1075 /** userrec::UpdateNick()
1076  * re-allocates a nick in the user_hash after they change nicknames,
1077  * returns a pointer to the new user as it may have moved
1078  */
1079 userrec* userrec::UpdateNickHash(const char* New)
1080 {
1081         try
1082         {
1083                 //user_hash::iterator newnick;
1084                 user_hash::iterator oldnick = ServerInstance->clientlist->find(this->nick);
1085
1086                 if (!strcasecmp(this->nick,New))
1087                         return oldnick->second;
1088
1089                 if (oldnick == ServerInstance->clientlist->end())
1090                         return NULL; /* doesnt exist */
1091
1092                 userrec* olduser = oldnick->second;
1093                 (*(ServerInstance->clientlist))[New] = olduser;
1094                 ServerInstance->clientlist->erase(oldnick);
1095                 return olduser;
1096         }
1097
1098         catch (...)
1099         {
1100                 ServerInstance->Log(DEBUG,"Exception in userrec::UpdateNickHash()");
1101                 return NULL;
1102         }
1103 }
1104
1105 void userrec::InvalidateCache()
1106 {
1107         /* Invalidate cache */
1108         if (cached_fullhost)
1109                 free(cached_fullhost);
1110         if (cached_hostip)
1111                 free(cached_hostip);
1112         if (cached_makehost)
1113                 free(cached_makehost);
1114         if (cached_fullrealhost)
1115                 free(cached_fullrealhost);
1116         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
1117 }
1118
1119 bool userrec::ForceNickChange(const char* newnick)
1120 {
1121         try
1122         {
1123                 int MOD_RESULT = 0;
1124
1125                 this->InvalidateCache();
1126
1127                 FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1128
1129                 if (MOD_RESULT)
1130                 {
1131                         ServerInstance->stats->statsCollisions++;
1132                         return false;
1133                 }
1134
1135                 if (ServerInstance->XLines->matches_qline(newnick))
1136                 {
1137                         ServerInstance->stats->statsCollisions++;
1138                         return false;
1139                 }
1140
1141                 if (this->registered == REG_ALL)
1142                 {
1143                         const char* pars[1];
1144                         pars[0] = newnick;
1145                         std::string cmd = "NICK";
1146                         return (ServerInstance->Parser->CallHandler(cmd, pars, 1, this) == CMD_SUCCESS);
1147                 }
1148                 return false;
1149         }
1150
1151         catch (...)
1152         {
1153                 ServerInstance->Log(DEBUG,"Exception in userrec::ForceNickChange()");
1154                 return false;
1155         }
1156 }
1157
1158 void userrec::SetSockAddr(int protocol_family, const char* ip, int port)
1159 {
1160         switch (protocol_family)
1161         {
1162 #ifdef SUPPORT_IP6LINKS
1163                 case AF_INET6:
1164                 {
1165                         sockaddr_in6* sin = new sockaddr_in6;
1166                         sin->sin6_family = AF_INET6;
1167                         sin->sin6_port = port;
1168                         inet_pton(AF_INET6, ip, &sin->sin6_addr);
1169                         this->ip = (sockaddr*)sin;
1170                 }
1171                 break;
1172 #endif
1173                 case AF_INET:
1174                 {
1175                         sockaddr_in* sin = new sockaddr_in;
1176                         sin->sin_family = AF_INET;
1177                         sin->sin_port = port;
1178                         inet_pton(AF_INET, ip, &sin->sin_addr);
1179                         this->ip = (sockaddr*)sin;
1180                 }
1181                 break;
1182                 default:
1183                         ServerInstance->Log(DEBUG,"Ut oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1184                 break;
1185         }
1186 }
1187
1188 int userrec::GetPort()
1189 {
1190         if (this->ip == NULL)
1191                 return 0;
1192
1193         switch (this->GetProtocolFamily())
1194         {
1195 #ifdef SUPPORT_IP6LINKS
1196                 case AF_INET6:
1197                 {
1198                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1199                         return sin->sin6_port;
1200                 }
1201                 break;
1202 #endif
1203                 case AF_INET:
1204                 {
1205                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1206                         return sin->sin_port;
1207                 }
1208                 break;
1209                 default:
1210                 break;
1211         }
1212         return 0;
1213 }
1214
1215 int userrec::GetProtocolFamily()
1216 {
1217         if (this->ip == NULL)
1218                 return 0;
1219
1220         sockaddr_in* sin = (sockaddr_in*)this->ip;
1221         return sin->sin_family;
1222 }
1223
1224 const char* userrec::GetIPString()
1225 {
1226         static char buf[1024];
1227
1228         if (this->ip == NULL)
1229                 return "";
1230
1231         switch (this->GetProtocolFamily())
1232         {
1233 #ifdef SUPPORT_IP6LINKS
1234                 case AF_INET6:
1235                 {
1236                         static char temp[1024];
1237
1238                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1239                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1240                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1241                         if (*buf == ':')
1242                         {
1243                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1244                                 *temp = '0';
1245                                 return temp;
1246                         }
1247                         return buf;
1248                 }
1249                 break;
1250 #endif
1251                 case AF_INET:
1252                 {
1253                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1254                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1255                         return buf;
1256                 }
1257                 break;
1258                 default:
1259                 break;
1260         }
1261         return "";
1262 }
1263
1264 const char* userrec::GetIPString(char* buf)
1265 {
1266         if (this->ip == NULL)
1267         {
1268                 *buf = 0;
1269                 return buf;
1270         }
1271
1272         switch (this->GetProtocolFamily())
1273         {
1274 #ifdef SUPPORT_IP6LINKS
1275                 case AF_INET6:
1276                 {
1277                         static char temp[1024];
1278
1279                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1280                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1281                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1282                         if (*buf == ':')
1283                         {
1284                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1285                                 *temp = '0';
1286                                 strlcpy(buf, temp, sizeof(temp));
1287                         }
1288                         return buf;
1289                 }
1290                 break;
1291 #endif
1292                 case AF_INET:
1293                 {
1294                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1295                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1296                         return buf;
1297                 }
1298                 break;
1299
1300                 default:
1301                 break;
1302         }
1303         return "";
1304 }
1305
1306 /** NOTE: We cannot pass a const reference to this method.
1307  * The string is changed by the workings of the method,
1308  * so that if we pass const ref, we end up copying it to
1309  * something we can change anyway. Makes sense to just let
1310  * the compiler do that copy for us.
1311  */
1312 void userrec::Write(std::string text)
1313 {
1314         if ((this->fd < 0) || (this->fd > MAX_DESCRIPTORS))
1315                 return;
1316
1317         try
1318         {
1319                 /* ServerInstance->Log(DEBUG,"<- %s", text.c_str());
1320                  * WARNING: The above debug line is VERY loud, do NOT
1321                  * enable it till we have a good way of filtering it
1322                  * out of the logs (e.g. 1.2 would be good).
1323                  */
1324                 text.append("\r\n");
1325         }
1326         catch (...)
1327         {
1328                 ServerInstance->Log(DEBUG,"Exception in userrec::Write() std::string::append");
1329                 return;
1330         }
1331
1332         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1333         {
1334                 try
1335                 {
1336                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length());
1337                 }
1338                 catch (CoreException& modexcept)
1339                 {
1340                         ServerInstance->Log(DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1341                 }
1342         }
1343         else
1344         {
1345                 this->AddWriteBuf(text);
1346         }
1347         ServerInstance->stats->statsSent += text.length();
1348         this->ServerInstance->SE->WantWrite(this);
1349 }
1350
1351 /** Write()
1352  */
1353 void userrec::Write(const char *text, ...)
1354 {
1355         va_list argsPtr;
1356         char textbuffer[MAXBUF];
1357
1358         va_start(argsPtr, text);
1359         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1360         va_end(argsPtr);
1361
1362         this->Write(std::string(textbuffer));
1363 }
1364
1365 void userrec::WriteServ(const std::string& text)
1366 {
1367         char textbuffer[MAXBUF];
1368
1369         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1370         this->Write(std::string(textbuffer));
1371 }
1372
1373 /** WriteServ()
1374  *  Same as Write(), except `text' is prefixed with `:server.name '.
1375  */
1376 void userrec::WriteServ(const char* text, ...)
1377 {
1378         va_list argsPtr;
1379         char textbuffer[MAXBUF];
1380
1381         va_start(argsPtr, text);
1382         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1383         va_end(argsPtr);
1384
1385         this->WriteServ(std::string(textbuffer));
1386 }
1387
1388
1389 void userrec::WriteFrom(userrec *user, const std::string &text)
1390 {
1391         char tb[MAXBUF];
1392
1393         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1394
1395         this->Write(std::string(tb));
1396 }
1397
1398
1399 /* write text from an originating user to originating user */
1400
1401 void userrec::WriteFrom(userrec *user, const char* text, ...)
1402 {
1403         va_list argsPtr;
1404         char textbuffer[MAXBUF];
1405
1406         va_start(argsPtr, text);
1407         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1408         va_end(argsPtr);
1409
1410         this->WriteFrom(user, std::string(textbuffer));
1411 }
1412
1413
1414 /* write text to an destination user from a source user (e.g. user privmsg) */
1415
1416 void userrec::WriteTo(userrec *dest, const char *data, ...)
1417 {
1418         char textbuffer[MAXBUF];
1419         va_list argsPtr;
1420
1421         va_start(argsPtr, data);
1422         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1423         va_end(argsPtr);
1424
1425         this->WriteTo(dest, std::string(textbuffer));
1426 }
1427
1428 void userrec::WriteTo(userrec *dest, const std::string &data)
1429 {
1430         dest->WriteFrom(this, data);
1431 }
1432
1433
1434 void userrec::WriteCommon(const char* text, ...)
1435 {
1436         char textbuffer[MAXBUF];
1437         va_list argsPtr;
1438
1439         if (this->registered != REG_ALL)
1440                 return;
1441
1442         va_start(argsPtr, text);
1443         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1444         va_end(argsPtr);
1445
1446         this->WriteCommon(std::string(textbuffer));
1447 }
1448
1449 void userrec::WriteCommon(const std::string &text)
1450 {
1451         try
1452         {
1453                 bool sent_to_at_least_one = false;
1454                 char tb[MAXBUF];
1455
1456                 if (this->registered != REG_ALL)
1457                         return;
1458
1459                 uniq_id++;
1460
1461                 /* We dont want to be doing this n times, just once */
1462                 snprintf(tb,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1463                 std::string out = tb;
1464
1465                 for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1466                 {
1467                         CUList* ulist = v->first->GetUsers();
1468                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1469                         {
1470                                 if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1471                                 {
1472                                         already_sent[i->second->fd] = uniq_id;
1473                                         i->second->Write(out);
1474                                         sent_to_at_least_one = true;
1475                                 }
1476                         }
1477                 }
1478
1479                 /*
1480                  * if the user was not in any channels, no users will receive the text. Make sure the user
1481                  * receives their OWN message for WriteCommon
1482                  */
1483                 if (!sent_to_at_least_one)
1484                 {
1485                         this->Write(std::string(tb));
1486                 }
1487         }
1488
1489         catch (...)
1490         {
1491                 ServerInstance->Log(DEBUG,"Exception in userrec::WriteCommon()");
1492         }
1493 }
1494
1495
1496 /* write a formatted string to all users who share at least one common
1497  * channel, NOT including the source user e.g. for use in QUIT
1498  */
1499
1500 void userrec::WriteCommonExcept(const char* text, ...)
1501 {
1502         char textbuffer[MAXBUF];
1503         va_list argsPtr;
1504
1505         va_start(argsPtr, text);
1506         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1507         va_end(argsPtr);
1508
1509         this->WriteCommonExcept(std::string(textbuffer));
1510 }
1511
1512 void userrec::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1513 {
1514         char tb1[MAXBUF];
1515         char tb2[MAXBUF];
1516
1517         if (this->registered != REG_ALL)
1518                 return;
1519
1520         uniq_id++;
1521         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost(),normal_text.c_str());
1522         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost(),oper_text.c_str());
1523         std::string out1 = tb1;
1524         std::string out2 = tb2;
1525
1526         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1527         {
1528                 CUList *ulist = v->first->GetUsers();
1529                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1530                 {
1531                         if (this != i->second)
1532                         {
1533                                 if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1534                                 {
1535                                         already_sent[i->second->fd] = uniq_id;
1536                                         i->second->Write(*i->second->oper ? out2 : out1);
1537                                 }
1538                         }
1539                 }
1540         }
1541 }
1542
1543 void userrec::WriteCommonExcept(const std::string &text)
1544 {
1545         char tb1[MAXBUF];
1546         std::string out1;
1547
1548         if (this->registered != REG_ALL)
1549                 return;
1550
1551         uniq_id++;
1552         snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1553         out1 = tb1;
1554
1555         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1556         {
1557                 CUList *ulist = v->first->GetUsers();
1558                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1559                 {
1560                         if (this != i->second)
1561                         {
1562                                 if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1563                                 {
1564                                         already_sent[i->second->fd] = uniq_id;
1565                                         i->second->Write(out1);
1566                                 }
1567                         }
1568                 }
1569         }
1570
1571 }
1572
1573 void userrec::WriteWallOps(const std::string &text)
1574 {
1575         /* Does nothing if theyre not opered */
1576         if ((!*this->oper) && (IS_LOCAL(this)))
1577                 return;
1578
1579         std::string wallop = "WALLOPS :";
1580
1581         try
1582         {
1583                 wallop.append(text);
1584         }
1585         catch (...)
1586         {
1587                 ServerInstance->Log(DEBUG,"Exception in userrec::Write() std::string::append");
1588                 return;
1589         }
1590
1591         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1592         {
1593                 userrec* t = *i;
1594                 if ((IS_LOCAL(t)) && (t->modes[UM_WALLOPS]))
1595                         this->WriteTo(t,wallop);
1596         }
1597 }
1598
1599 void userrec::WriteWallOps(const char* text, ...)
1600 {
1601         char textbuffer[MAXBUF];
1602         va_list argsPtr;
1603
1604         va_start(argsPtr, text);
1605         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1606         va_end(argsPtr);
1607
1608         this->WriteWallOps(std::string(textbuffer));
1609 }
1610
1611 /* return 0 or 1 depending if users u and u2 share one or more common channels
1612  * (used by QUIT, NICK etc which arent channel specific notices)
1613  *
1614  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1615  * the first users channels then the second users channels within the outer loop,
1616  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1617  * all possible iterations). However this new function instead checks against the
1618  * channel's userlist in the inner loop which is a std::map<userrec*,userrec*>
1619  * and saves us time as we already know what pointer value we are after.
1620  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1621  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1622  */
1623 bool userrec::SharesChannelWith(userrec *other)
1624 {
1625         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1626                 return false;
1627
1628         /* Outer loop */
1629         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1630         {
1631                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1632                  * by replacing it with a map::find which *should* be more efficient
1633                  */
1634                 if (i->first->HasUser(other))
1635                         return true;
1636         }
1637         return false;
1638 }
1639
1640 bool userrec::ChangeName(const char* gecos)
1641 {
1642         if (!strcmp(gecos, this->fullname))
1643                 return true;
1644
1645         if (IS_LOCAL(this))
1646         {
1647                 int MOD_RESULT = 0;
1648                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1649                 if (MOD_RESULT)
1650                         return false;
1651                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1652         }
1653         strlcpy(this->fullname,gecos,MAXGECOS+1);
1654
1655         return true;
1656 }
1657
1658 bool userrec::ChangeDisplayedHost(const char* host)
1659 {
1660         if (!strcmp(host, this->dhost))
1661                 return true;
1662
1663         if (IS_LOCAL(this))
1664         {
1665                 int MOD_RESULT = 0;
1666                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host));
1667                 if (MOD_RESULT)
1668                         return false;
1669                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host));
1670         }
1671         if (this->ServerInstance->Config->CycleHosts)
1672                 this->WriteCommonExcept("QUIT :Changing hosts");
1673
1674         /* Fix by Om: userrec::dhost is 65 long, this was truncating some long hosts */
1675         strlcpy(this->dhost,host,64);
1676
1677         this->InvalidateCache();
1678
1679         if (this->ServerInstance->Config->CycleHosts)
1680         {
1681                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1682                 {
1683                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1684                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1685                         if (n.length() > 0)
1686                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1687                 }
1688         }
1689
1690         if (IS_LOCAL(this))
1691                 this->WriteServ("396 %s %s :is now your displayed host",this->nick,this->dhost);
1692
1693         return true;
1694 }
1695
1696 bool userrec::ChangeIdent(const char* newident)
1697 {
1698         if (!strcmp(newident, this->ident))
1699                 return true;
1700
1701         if (this->ServerInstance->Config->CycleHosts)
1702                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1703
1704         strlcpy(this->ident, newident, IDENTMAX+2);
1705
1706         this->InvalidateCache();
1707
1708         if (this->ServerInstance->Config->CycleHosts)
1709         {
1710                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1711                 {
1712                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1713                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1714                         if (n.length() > 0)
1715                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1716                 }
1717         }
1718
1719         return true;
1720 }
1721
1722 void userrec::SendAll(const char* command, char* text, ...)
1723 {
1724         char textbuffer[MAXBUF];
1725         char formatbuffer[MAXBUF];
1726         va_list argsPtr;
1727
1728         va_start(argsPtr, text);
1729         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1730         va_end(argsPtr);
1731
1732         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost(), command, textbuffer);
1733         std::string fmt = formatbuffer;
1734
1735         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1736         {
1737                 (*i)->Write(fmt);
1738         }
1739 }
1740
1741
1742 std::string userrec::ChannelList(userrec* source)
1743 {
1744         try
1745         {
1746                 std::string list;
1747                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1748                 {
1749                         /* If the target is the same as the sender, let them see all their channels.
1750                          * If the channel is NOT private/secret OR the user shares a common channel
1751                          * If the user is an oper, and the <options:operspywhois> option is set.
1752                          */
1753                         if ((source == this) || (*source->oper && ServerInstance->Config->OperSpyWhois) || (((!i->first->modes[CM_PRIVATE]) && (!i->first->modes[CM_SECRET])) || (i->first->HasUser(source))))
1754                         {
1755                                 list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" ");
1756                         }
1757                 }
1758                 return list;
1759         }
1760         catch (...)
1761         {
1762                 ServerInstance->Log(DEBUG,"Exception in userrec::ChannelList()");
1763                 return "";
1764         }
1765 }
1766
1767 void userrec::SplitChanList(userrec* dest, const std::string &cl)
1768 {
1769         std::string line;
1770         std::ostringstream prefix;
1771         std::string::size_type start, pos, length;
1772
1773         try
1774         {
1775                 prefix << this->nick << " " << dest->nick << " :";
1776                 line = prefix.str();
1777                 int namelen = strlen(ServerInstance->Config->ServerName) + 6;
1778
1779                 for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1780                 {
1781                         length = (pos == std::string::npos) ? cl.length() : pos;
1782
1783                         if (line.length() + namelen + length - start > 510)
1784                         {
1785                                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1786                                 line = prefix.str();
1787                         }
1788
1789                         if(pos == std::string::npos)
1790                         {
1791                                 line.append(cl.substr(start, length - start));
1792                                 break;
1793                         }
1794                         else
1795                         {
1796                                 line.append(cl.substr(start, length - start + 1));
1797                         }
1798                 }
1799
1800                 if (line.length())
1801                 {
1802                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1803                 }
1804         }
1805
1806         catch (...)
1807         {
1808                 ServerInstance->Log(DEBUG,"Exception in userrec::SplitChanList()");
1809         }
1810 }
1811
1812
1813 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1814  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1815  * then their ip will be taken as 'priority' anyway, so for example,
1816  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1817  */
1818 ConnectClass* userrec::GetClass()
1819 {
1820         for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1821         {
1822                 if (((match(this->GetIPString(),i->GetHost().c_str(),true)) || (match(this->host,i->GetHost().c_str()))))
1823                 {
1824                         if (i->GetPort())
1825                         {
1826                                 if (this->GetPort() == i->GetPort())
1827                                         return &(*i);
1828                                 else
1829                                         continue;
1830                         }
1831                         else
1832                                 return &(*i);
1833                 }
1834         }
1835         return NULL;
1836 }
1837
1838 void userrec::PurgeEmptyChannels()
1839 {
1840         std::vector<chanrec*> to_delete;
1841
1842         // firstly decrement the count on each channel
1843         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1844         {
1845                 f->first->RemoveAllPrefixes(this);
1846                 if (f->first->DelUser(this) == 0)
1847                 {
1848                         /* No users left in here, mark it for deletion */
1849                         try
1850                         {
1851                                 to_delete.push_back(f->first);
1852                         }
1853                         catch (...)
1854                         {
1855                                 ServerInstance->Log(DEBUG,"Exception in userrec::PurgeEmptyChannels to_delete.push_back()");
1856                         }
1857                 }
1858         }
1859
1860         for (std::vector<chanrec*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1861         {
1862                 chanrec* thischan = *n;
1863                 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
1864                 if (i2 != ServerInstance->chanlist->end())
1865                 {
1866                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1867                         DELETE(i2->second);
1868                         ServerInstance->chanlist->erase(i2);
1869                         this->chans.erase(*n);
1870                 }
1871         }
1872
1873         this->UnOper();
1874 }
1875
1876 void userrec::ShowMOTD()
1877 {
1878         if (!ServerInstance->Config->MOTD.size())
1879         {
1880                 this->WriteServ("422 %s :Message of the day file is missing.",this->nick);
1881                 return;
1882         }
1883         this->WriteServ("375 %s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1884
1885         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1886                 this->WriteServ("372 %s :- %s",this->nick,i->c_str());
1887
1888         this->WriteServ("376 %s :End of message of the day.", this->nick);
1889 }
1890
1891 void userrec::ShowRULES()
1892 {
1893         if (!ServerInstance->Config->RULES.size())
1894         {
1895                 this->WriteServ("NOTICE %s :Rules file is missing.",this->nick);
1896                 return;
1897         }
1898         this->WriteServ("NOTICE %s :%s rules",this->nick,ServerInstance->Config->ServerName);
1899
1900         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1901                 this->WriteServ("NOTICE %s :%s",this->nick,i->c_str());
1902
1903         this->WriteServ("NOTICE %s :End of %s rules.",this->nick,ServerInstance->Config->ServerName);
1904 }
1905
1906 void userrec::HandleEvent(EventType et, int errornum)
1907 {
1908         /* WARNING: May delete this user! */
1909         int thisfd = this->GetFd();
1910
1911         try
1912         {
1913                 switch (et)
1914                 {
1915                         case EVENT_READ:
1916                                 ServerInstance->ProcessUser(this);
1917                         break;
1918                         case EVENT_WRITE:
1919                                 this->FlushWriteBuf();
1920                         break;
1921                         case EVENT_ERROR:
1922                                 /** This should be safe, but dont DARE do anything after it -- Brain */
1923                                 this->SetWriteError(errornum ? strerror(errornum) : "EOF from client");
1924                         break;
1925                 }
1926         }
1927         catch (...)
1928         {
1929                 ServerInstance->Log(DEBUG,"Exception in userrec::HandleEvent intercepted");
1930         }
1931
1932         /* If the user has raised an error whilst being processed, quit them now we're safe to */
1933         if ((ServerInstance->SE->GetRef(thisfd) == this))
1934         {
1935                 if (!WriteError.empty())
1936                 {
1937                         userrec::QuitUser(ServerInstance, this, GetWriteError());
1938                 }
1939         }
1940 }
1941
1942 void userrec::SetOperQuit(const std::string &oquit)
1943 {
1944         if (operquit)
1945                 return;
1946
1947         operquit = strdup(oquit.c_str());
1948 }
1949
1950 const char* userrec::GetOperQuit()
1951 {
1952         return operquit ? operquit : "";
1953 }
1954
1955