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