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