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 "cull_list.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                 conf->GetInstance()->Log(DEBUG,"Currently %d items to clear",conf->opertypes.size());
  34                 for (opertype_t::iterator n = conf->opertypes.begin(); n != conf->opertypes.end(); n++)
  35                 {
  36                         conf->GetInstance()->Log(DEBUG,"Clear item");
  37                         if (n->second)
  38                                 delete[] n->second;
  39                 }
  40         }
  41
  42         conf->opertypes.clear();
  43         return true;
  44 }
  45
  46 bool InitClasses(ServerConfig* conf, const char* tag)
  47 {
  48         if (conf->operclass.size())
  49         {
  50                 for (operclass_t::iterator n = conf->operclass.begin(); n != conf->operclass.end(); n++)
  51                 {
  52                         if (n->second)
  53                                 delete[] n->second;
  54                 }
  55         }
  56
  57         conf->operclass.clear();
  58         return true;
  59 }
  60
  61 bool DoType(ServerConfig* conf, const char* tag, char** entries, ValueList &values, int* types)
  62 {
  63         const char* TypeName = values[0].GetString();
  64         const char* Classes = values[1].GetString();
  65
  66         conf->opertypes[TypeName] = strdup(Classes);
  67         conf->GetInstance()->Log(DEBUG,"Read oper TYPE '%s' with classes '%s'",TypeName,Classes);
  68         return true;
  69 }
  70
  71 bool DoClass(ServerConfig* conf, const char* tag, char** entries, ValueList &values, int* types)
  72 {
  73         const char* ClassName = values[0].GetString();
  74         const char* CommandList = values[1].GetString();
  75
  76         conf->operclass[ClassName] = strdup(CommandList);
  77         conf->GetInstance()->Log(DEBUG,"Read oper CLASS '%s' with commands '%s'",ClassName,CommandList);
  78         return true;
  79 }
  80
  81 bool DoneClassesAndTypes(ServerConfig* conf, const char* tag)
  82 {
  83         return true;
  84 }
  85
  86 std::string userrec::ProcessNoticeMasks(const char *sm)
  87 {
  88         bool adding = true, oldadding = false;
  89         const char *c = sm;
  90         std::string output;
  91
  92         ServerInstance->Log(DEBUG,"Process notice masks");
  93
  94         while (c && *c)
  95         {
  96                 ServerInstance->Log(DEBUG,"Process notice mask %c",*c);
  97
  98                 switch (*c)
  99                 {
 100                         case '+':
 101                                 adding = true;
 102                         break;
 103                         case '-':
 104                                 adding = false;
 105                         break;
 106                         case '*':
 107                                 for (unsigned char d = 'A'; d <= 'z'; d++)
 108                                 {
 109                                         if (ServerInstance->SNO->IsEnabled(d))
 110                                         {
 111                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
 112                                                 {
 113                                                         if ((oldadding != adding) || (!output.length()))
 114                                                                 output += (adding ? '+' : '-');
 115
 116                                                         this->SetNoticeMask(d, adding);
 117
 118                                                         output += d;
 119                                                 }
 120                                         }
 121                                         oldadding = adding;
 122                                 }
 123                         break;
 124                         default:
 125                                 if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c)))
 126                                 {
 127                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
 128                                         {
 129                                                 if ((oldadding != adding) || (!output.length()))
 130                                                         output += (adding ? '+' : '-');
 131
 132                                                 this->SetNoticeMask(*c, adding);
 133
 134                                                 output += *c;
 135                                         }
 136                                 }
 137                                 oldadding = adding;
 138                         break;
 139                 }
 140
 141                 *c++;
 142         }
 143
 144         return output;
 145 }
 146
 147 void userrec::StartDNSLookup()
 148 {
 149         ServerInstance->Log(DEBUG,"Commencing reverse lookup");
 150         try
 151         {
 152                 ServerInstance->Log(DEBUG,"Passing instance: %08x",this->ServerInstance);
 153                 res_reverse = new UserResolver(this->ServerInstance, this, this->GetIPString(), DNS_QUERY_REVERSE);
 154                 this->ServerInstance->AddResolver(res_reverse);
 155         }
 156         catch (CoreException& e)
 157         {
 158                 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
 159         }
 160 }
 161
 162 UserResolver::UserResolver(InspIRCd* Instance, userrec* user, std::string to_resolve, QueryType qt) :
 163         Resolver(Instance, to_resolve, qt), bound_user(user)
 164 {
 165         this->fwd = (qt == DNS_QUERY_A || qt == DNS_QUERY_AAAA);
 166         this->bound_fd = user->GetFd();
 167 }
 168
 169 void UserResolver::OnLookupComplete(const std::string &result)
 170 {
 171         if ((!this->fwd) && (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user))
 172         {
 173                 ServerInstance->Log(DEBUG,"Commencing forward lookup");
 174                 this->bound_user->stored_host = result;
 175                 try
 176                 {
 177                         /* Check we didnt time out */
 178                         if (this->bound_user->registered != REG_ALL)
 179                         {
 180 #ifdef IPV6
 181                                 const char *ip = this->bound_user->GetIPString();
 182                                 bound_user->res_forward = new UserResolver(this->ServerInstance, this->bound_user, result, (strstr(ip,"0::ffff:") == ip ? DNS_QUERY_A : DNS_QUERY_AAAA));
 183 #else
 184                                 bound_user->res_forward = new UserResolver(this->ServerInstance, this->bound_user, result, DNS_QUERY_A);
 185 #endif
 186                                 this->ServerInstance->AddResolver(bound_user->res_forward);
 187                         }
 188                 }
 189                 catch (CoreException& e)
 190                 {
 191                         ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
 192                 }
 193         }
 194         else if ((this->fwd) && (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user))
 195         {
 196                 /* Both lookups completed */
 197                 std::string result2 = "0::ffff:";
 198                 result2.append(result);
 199                 if (this->bound_user->GetIPString() == result || this->bound_user->GetIPString() == result2)
 200                 {
 201                         std::string hostname = this->bound_user->stored_host;
 202                         if (hostname.length() < 65)
 203                         {
 204                                 /* Check we didnt time out */
 205                                 if (this->bound_user->registered != REG_ALL)
 206                                 {
 207                                         /* Hostnames starting with : are not a good thing (tm) */
 208                                         if (*(hostname.c_str()) == ':')
 209                                                 hostname = "0" + hostname;
 210
 211                                         this->bound_user->WriteServ("NOTICE Auth :*** Found your hostname (%s)", hostname.c_str());
 212                                         this->bound_user->dns_done = true;
 213                                         strlcpy(this->bound_user->dhost, hostname.c_str(),64);
 214                                         strlcpy(this->bound_user->host, hostname.c_str(),64);
 215                                 }
 216                         }
 217                         else
 218                         {
 219                                 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());
 220                         }
 221                 }
 222                 else
 223                 {
 224                         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());
 225                 }
 226         }
 227 }
 228
 229 void UserResolver::OnError(ResolverError e, const std::string &errormessage)
 230 {
 231         if (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user)
 232         {
 233                 /* Error message here */
 234                 this->bound_user->WriteServ("NOTICE Auth :*** Could not resolve your hostname, using your IP address (%s) instead.", this->bound_user->GetIPString());
 235                 this->bound_user->dns_done = true;
 236         }
 237 }
 238
 239
 240 bool userrec::IsNoticeMaskSet(unsigned char sm)
 241 {
 242         return (snomasks[sm-65]);
 243 }
 244
 245 void userrec::SetNoticeMask(unsigned char sm, bool value)
 246 {
 247         snomasks[sm-65] = value;
 248 }
 249
 250 const char* userrec::FormatNoticeMasks()
 251 {
 252         static char data[MAXBUF];
 253         int offset = 0;
 254
 255         for (int n = 0; n < 64; n++)
 256         {
 257                 if (snomasks[n])
 258                         data[offset++] = n+65;
 259         }
 260
 261         data[offset] = 0;
 262         return data;
 263 }
 264
 265
 266
 267 bool userrec::IsModeSet(unsigned char m)
 268 {
 269         return (modes[m-65]);
 270 }
 271
 272 void userrec::SetMode(unsigned char m, bool value)
 273 {
 274         modes[m-65] = value;
 275 }
 276
 277 const char* userrec::FormatModes()
 278 {
 279         static char data[MAXBUF];
 280         int offset = 0;
 281         for (int n = 0; n < 64; n++)
 282         {
 283                 if (modes[n])
 284                         data[offset++] = n+65;
 285         }
 286         data[offset] = 0;
 287         return data;
 288 }
 289
 290 userrec::userrec(InspIRCd* Instance) : ServerInstance(Instance)
 291 {
 292         ServerInstance->Log(DEBUG,"userrec::userrec(): Instance: %08x",ServerInstance);
 293         // the PROPER way to do it, AVOID bzero at *ALL* costs
 294         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = 0;
 295         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 296         reset_due = ServerInstance->Time();
 297         age = ServerInstance->Time(true);
 298         lines_in = lastping = signon = idle_lastmsg = nping = registered = 0;
 299         ChannelCount = timeout = flood = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 300         exempt = haspassed = dns_done = false;
 301         fd = -1;
 302         recvq = "";
 303         sendq = "";
 304         WriteError = "";
 305         res_forward = res_reverse = NULL;
 306         ip = NULL;
 307         chans.clear();
 308         invites.clear();
 309         memset(modes,0,sizeof(modes));
 310         memset(snomasks,0,sizeof(snomasks));
 311 }
 312
 313 userrec::~userrec()
 314 {
 315         if (ip)
 316         {
 317                 clonemap::iterator x = ServerInstance->local_clones.find(this->GetIPString());
 318                 if (x != ServerInstance->local_clones.end())
 319                 {
 320                         x->second--;
 321                         if (!x->second)
 322                         {
 323                                 ServerInstance->local_clones.erase(x);
 324                         }
 325                 }
 326
 327                 clonemap::iterator y = ServerInstance->global_clones.find(this->GetIPString());
 328                 if (y != ServerInstance->global_clones.end())
 329                 {
 330                         y->second--;
 331                         if (!y->second)
 332                         {
 333                                 ServerInstance->global_clones.erase(y);
 334                         }
 335                 }
 336
 337                 if (this->GetProtocolFamily() == AF_INET)
 338                 {
 339                         delete (sockaddr_in*)ip;
 340                 }
 341 #ifdef SUPPORT_IP6LINKS
 342                 else
 343                 {
 344                         delete (sockaddr_in6*)ip;
 345                 }
 346 #endif
 347         }
 348 }
 349
 350 char* userrec::MakeHost()
 351 {
 352         static char nhost[MAXBUF];
 353         /* This is much faster than snprintf */
 354         char* t = nhost;
 355         for(char* n = ident; *n; n++)
 356                 *t++ = *n;
 357         *t++ = '@';
 358         for(char* n = host; *n; n++)
 359                 *t++ = *n;
 360         *t = 0;
 361         return nhost;
 362 }
 363
 364 char* userrec::MakeHostIP()
 365 {
 366         static char ihost[MAXBUF];
 367         /* This is much faster than snprintf */
 368         char* t = ihost;
 369         for(char* n = ident; *n; n++)
 370                 *t++ = *n;
 371         *t++ = '@';
 372         for(const char* n = this->GetIPString(); *n; n++)
 373                 *t++ = *n;
 374         *t = 0;
 375         return ihost;
 376 }
 377
 378 void userrec::CloseSocket()
 379 {
 380         shutdown(this->fd,2);
 381         close(this->fd);
 382 }
 383
 384 char* userrec::GetFullHost()
 385 {
 386         static char result[MAXBUF];
 387         char* t = result;
 388         for(char* n = nick; *n; n++)
 389                 *t++ = *n;
 390         *t++ = '!';
 391         for(char* n = ident; *n; n++)
 392                 *t++ = *n;
 393         *t++ = '@';
 394         for(char* n = dhost; *n; n++)
 395                 *t++ = *n;
 396         *t = 0;
 397         return result;
 398 }
 399
 400 char* userrec::MakeWildHost()
 401 {
 402         static char nresult[MAXBUF];
 403         char* t = nresult;
 404         *t++ = '*';     *t++ = '!';
 405         *t++ = '*';     *t++ = '@';
 406         for(char* n = dhost; *n; n++)
 407                 *t++ = *n;
 408         *t = 0;
 409         return nresult;
 410 }
 411
 412 int userrec::ReadData(void* buffer, size_t size)
 413 {
 414         if (IS_LOCAL(this))
 415         {
 416                 return read(this->fd, buffer, size);
 417         }
 418         else
 419                 return 0;
 420 }
 421
 422
 423 char* userrec::GetFullRealHost()
 424 {
 425         static char fresult[MAXBUF];
 426         char* t = fresult;
 427         for(char* n = nick; *n; n++)
 428                 *t++ = *n;
 429         *t++ = '!';
 430         for(char* n = ident; *n; n++)
 431                 *t++ = *n;
 432         *t++ = '@';
 433         for(char* n = host; *n; n++)
 434                 *t++ = *n;
 435         *t = 0;
 436         return fresult;
 437 }
 438
 439 bool userrec::IsInvited(const irc::string &channel)
 440 {
 441         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 442         {
 443                 if (channel == *i)
 444                 {
 445                         return true;
 446                 }
 447         }
 448         return false;
 449 }
 450
 451 InvitedList* userrec::GetInviteList()
 452 {
 453         return &invites;
 454 }
 455
 456 void userrec::InviteTo(const irc::string &channel)
 457 {
 458         invites.push_back(channel);
 459 }
 460
 461 void userrec::RemoveInvite(const irc::string &channel)
 462 {
 463         ServerInstance->Log(DEBUG,"Removing invites");
 464         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 465         {
 466                 if (channel == *i)
 467                 {
 468                         invites.erase(i);
 469                         return;
 470                 }
 471         }
 472 }
 473
 474 bool userrec::HasPermission(const std::string &command)
 475 {
 476         char* mycmd;
 477         char* savept;
 478         char* savept2;
 479
 480         /*
 481          * users on remote servers can completely bypass all permissions based checks.
 482          * This prevents desyncs when one server has different type/class tags to another.
 483          * That having been said, this does open things up to the possibility of source changes
 484          * allowing remote kills, etc - but if they have access to the src, they most likely have
 485          * access to the conf - so it's an end to a means either way.
 486          */
 487         if (!IS_LOCAL(this))
 488                 return true;
 489
 490         // are they even an oper at all?
 491         if (*this->oper)
 492         {
 493                 opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper);
 494                 if (iter_opertype != ServerInstance->Config->opertypes.end())
 495                 {
 496                         char* Classes = strdup(iter_opertype->second);
 497                         char* myclass = strtok_r(Classes," ",&savept);
 498                         while (myclass)
 499                         {
 500                                 operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass);
 501                                 if (iter_operclass != ServerInstance->Config->operclass.end())
 502                                 {
 503                                         char* CommandList = strdup(iter_operclass->second);
 504                                         mycmd = strtok_r(CommandList," ",&savept2);
 505                                         while (mycmd)
 506                                         {
 507                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 508                                                 {
 509                                                         free(Classes);
 510                                                         free(CommandList);
 511                                                         return true;
 512                                                 }
 513                                                 mycmd = strtok_r(NULL," ",&savept2);
 514                                         }
 515                                         free(CommandList);
 516                                 }
 517                                 myclass = strtok_r(NULL," ",&savept);
 518                         }
 519                         free(Classes);
 520                 }
 521         }
 522         return false;
 523 }
 524
 525 /** NOTE: We cannot pass a const reference to this method.
 526  * The string is changed by the workings of the method,
 527  * so that if we pass const ref, we end up copying it to
 528  * something we can change anyway. Makes sense to just let
 529  * the compiler do that copy for us.
 530  */
 531 bool userrec::AddBuffer(std::string a)
 532 {
 533         try
 534         {
 535                 std::string::size_type i = a.rfind('\r');
 536
 537                 while (i != std::string::npos)
 538                 {
 539                         a.erase(i, 1);
 540                         i = a.rfind('\r');
 541                 }
 542
 543                 if (a.length())
 544                         recvq.append(a);
 545
 546                 if (recvq.length() > (unsigned)this->recvqmax)
 547                 {
 548                         this->SetWriteError("RecvQ exceeded");
 549                         ServerInstance->WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 550                         return false;
 551                 }
 552
 553                 return true;
 554         }
 555
 556         catch (...)
 557         {
 558                 ServerInstance->Log(DEBUG,"Exception in userrec::AddBuffer()");
 559                 return false;
 560         }
 561 }
 562
 563 bool userrec::BufferIsReady()
 564 {
 565         return (recvq.find('\n') != std::string::npos);
 566 }
 567
 568 void userrec::ClearBuffer()
 569 {
 570         recvq = "";
 571 }
 572
 573 std::string userrec::GetBuffer()
 574 {
 575         try
 576         {
 577                 if (!recvq.length())
 578                         return "";
 579
 580                 /* Strip any leading \r or \n off the string.
 581                  * Usually there are only one or two of these,
 582                  * so its is computationally cheap to do.
 583                  */
 584                 while ((*recvq.begin() == '\r') || (*recvq.begin() == '\n'))
 585                         recvq.erase(recvq.begin());
 586
 587                 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 588                 {
 589                         /* Find the first complete line, return it as the
 590                          * result, and leave the recvq as whats left
 591                          */
 592                         if (*x == '\n')
 593                         {
 594                                 std::string ret = std::string(recvq.begin(), x);
 595                                 recvq.erase(recvq.begin(), x + 1);
 596                                 return ret;
 597                         }
 598                 }
 599                 return "";
 600         }
 601
 602         catch (...)
 603         {
 604                 ServerInstance->Log(DEBUG,"Exception in userrec::GetBuffer()");
 605                 return "";
 606         }
 607 }
 608
 609 void userrec::AddWriteBuf(const std::string &data)
 610 {
 611         if (*this->GetWriteError())
 612                 return;
 613
 614         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 615         {
 616                 /*
 617                  * Fix by brain - Set the error text BEFORE calling writeopers, because
 618                  * if we dont it'll recursively  call here over and over again trying
 619                  * to repeatedly add the text to the sendq!
 620                  */
 621                 this->SetWriteError("SendQ exceeded");
 622                 ServerInstance->WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 623                 return;
 624         }
 625
 626         try
 627         {
 628                 if (data.length() > 512)
 629                         sendq.append(data.substr(0,510)).append("\r\n");
 630                 else
 631                         sendq.append(data);
 632         }
 633         catch (...)
 634         {
 635                 this->SetWriteError("SendQ exceeded");
 636                 ServerInstance->WriteOpers("*** User %s SendQ got an exception",this->nick);
 637         }
 638 }
 639
 640 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 641 void userrec::FlushWriteBuf()
 642 {
 643         try
 644         {
 645                 if ((this->fd == FD_MAGIC_NUMBER) || (*this->GetWriteError()))
 646                 {
 647                         sendq = "";
 648                 }
 649                 if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 650                 {
 651                         int old_sendq_length = sendq.length();
 652                         int n_sent = write(this->fd, this->sendq.data(), this->sendq.length());
 653                         if (n_sent == -1)
 654                         {
 655                                 if (errno == EAGAIN)
 656                                 {
 657                                         /* The socket buffer is full. This isnt fatal,
 658                                          * try again later.
 659                                          */
 660                                         ServerInstance->Log(DEBUG,"EAGAIN, want write");
 661                                         this->ServerInstance->SE->WantWrite(this);
 662                                 }
 663                                 else
 664                                 {
 665                                         /* Fatal error, set write error and bail
 666                                          */
 667                                         this->SetWriteError(strerror(errno));
 668                                         return;
 669                                 }
 670                         }
 671                         else
 672                         {
 673                                 /* advance the queue */
 674                                 if (n_sent)
 675                                         this->sendq = this->sendq.substr(n_sent);
 676                                 /* update the user's stats counters */
 677                                 this->bytes_out += n_sent;
 678                                 this->cmds_out++;
 679                                 if (n_sent != old_sendq_length)
 680                                 {
 681                                         ServerInstance->Log(DEBUG,"Not all written, want write");
 682                                         this->ServerInstance->SE->WantWrite(this);
 683                                 }
 684                         }
 685                 }
 686         }
 687
 688         catch (...)
 689         {
 690                 ServerInstance->Log(DEBUG,"Exception in userrec::FlushWriteBuf()");
 691         }
 692 }
 693
 694 void userrec::SetWriteError(const std::string &error)
 695 {
 696         try
 697         {
 698                 // don't try to set the error twice, its already set take the first string.
 699                 if (this->WriteError.empty())
 700                 {
 701                         ServerInstance->Log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 702                         this->WriteError = error;
 703                 }
 704         }
 705
 706         catch (...)
 707         {
 708                 ServerInstance->Log(DEBUG,"Exception in userrec::SetWriteError()");
 709         }
 710 }
 711
 712 const char* userrec::GetWriteError()
 713 {
 714         return this->WriteError.c_str();
 715 }
 716
 717 void userrec::Oper(const std::string &opertype)
 718 {
 719         try
 720         {
 721                 this->modes[UM_OPERATOR] = 1;
 722                 this->WriteServ("MODE %s :+o", this->nick);
 723                 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 724                 ServerInstance->Log(DEFAULT,"OPER: %s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 725                 strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 726                 ServerInstance->all_opers.push_back(this);
 727                 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype));
 728         }
 729
 730         catch (...)
 731         {
 732                 ServerInstance->Log(DEBUG,"Exception in userrec::Oper()");
 733         }
 734 }
 735
 736 void userrec::UnOper()
 737 {
 738         try
 739         {
 740                 if (*this->oper)
 741                 {
 742                         *this->oper = 0;
 743                         this->modes[UM_OPERATOR] = 0;
 744                         for (std::vector<userrec*>::iterator a = ServerInstance->all_opers.begin(); a < ServerInstance->all_opers.end(); a++)
 745                         {
 746                                 if (*a == this)
 747                                 {
 748                                         ServerInstance->Log(DEBUG,"Oper removed from optimization list");
 749                                         ServerInstance->all_opers.erase(a);
 750                                         return;
 751                                 }
 752                         }
 753                 }
 754         }
 755
 756         catch (...)
 757         {
 758                 ServerInstance->Log(DEBUG,"Exception in userrec::UnOper()");
 759         }
 760 }
 761
 762 void userrec::QuitUser(InspIRCd* Instance, userrec *user, const std::string &quitreason)
 763 {
 764         user_hash::iterator iter = Instance->clientlist->find(user->nick);
 765         std::string reason = quitreason;
 766
 767         if (reason.length() > MAXQUIT - 1)
 768                 reason.resize(MAXQUIT - 1);
 769
 770         if (user->registered != REG_ALL)
 771                 if (Instance->unregistered_count)
 772                         Instance->unregistered_count--;
 773
 774         if (IS_LOCAL(user))
 775         {
 776                 user->Write("ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason.c_str());
 777                 if ((!user->sendq.empty()) && (!(*user->GetWriteError())))
 778                         user->FlushWriteBuf();
 779         }
 780
 781         if (user->registered == REG_ALL)
 782         {
 783                 user->PurgeEmptyChannels();
 784                 user->WriteCommonExcept("QUIT :%s",reason.c_str());
 785                 FOREACH_MOD_I(Instance,I_OnUserQuit,OnUserQuit(user,reason));
 786         }
 787
 788         FOREACH_MOD_I(Instance,I_OnUserDisconnect,OnUserDisconnect(user));
 789
 790         if (IS_LOCAL(user))
 791         {
 792                 if (Instance->Config->GetIOHook(user->GetPort()))
 793                 {
 794                         try
 795                         {
 796                                 Instance->Config->GetIOHook(user->GetPort())->OnRawSocketClose(user->fd);
 797                         }
 798                         catch (CoreException& modexcept)
 799                         {
 800                                 Instance->Log(DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 801                         }
 802                 }
 803
 804                 Instance->SE->DelFd(user);
 805                 user->CloseSocket();
 806         }
 807
 808         /*
 809          * this must come before the ServerInstance->SNO->WriteToSnoMaskso that it doesnt try to fill their buffer with anything
 810          * if they were an oper with +sn +qQ.
 811          */
 812         if (user->registered == REG_ALL)
 813         {
 814                 if (IS_LOCAL(user))
 815                         Instance->SNO->WriteToSnoMask('q',"Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason.c_str());
 816                 else
 817                         Instance->SNO->WriteToSnoMask('Q',"Client exiting on server %s: %s!%s@%s [%s]",user->server,user->nick,user->ident,user->host,reason.c_str());
 818                 user->AddToWhoWas();
 819         }
 820
 821         if (iter != Instance->clientlist->end())
 822         {
 823                 Instance->Log(DEBUG,"deleting user hash value %lx",(unsigned long)user);
 824                 if (IS_LOCAL(user))
 825                 {
 826                         std::vector<userrec*>::iterator x = find(Instance->local_users.begin(),Instance->local_users.end(),user);
 827                         if (x != Instance->local_users.end())
 828                                 Instance->local_users.erase(x);
 829                 }
 830                 Instance->clientlist->erase(iter);
 831                 DELETE(user);
 832         }
 833 }
 834
 835 namespace irc
 836 {
 837         namespace whowas
 838         {
 839
 840                 WhoWasGroup::WhoWasGroup(userrec* user) : host(NULL), dhost(NULL), ident(NULL), server(NULL), gecos(NULL), signon(user->signon)
 841                 {
 842                         this->host = strdup(user->host);
 843                         this->dhost = strdup(user->dhost);
 844                         this->ident = strdup(user->ident);
 845                         this->server = user->server;
 846                         this->gecos = strdup(user->fullname);
 847                 }
 848
 849                 WhoWasGroup::~WhoWasGroup()
 850                 {
 851                         if (host)
 852                                 free(host);
 853                         if (dhost)
 854                                 free(dhost);
 855                         if (ident)
 856                                 free(ident);
 857                         if (gecos)
 858                                 free(gecos);
 859                 }
 860
 861                 /* every hour, run this function which removes all entries older than Config->WhoWasMaxKeep */
 862                 void MaintainWhoWas(InspIRCd* ServerInstance, time_t t)
 863                 {
 864                         for (whowas_users::iterator iter = ServerInstance->whowas.begin(); iter != ServerInstance->whowas.end(); iter++)
 865                         {
 866                                 whowas_set* n = (whowas_set*)iter->second;
 867                                 if (n->size())
 868                                 {
 869                                         while ((n->begin() != n->end()) && ((*n->begin())->signon < t - ServerInstance->Config->WhoWasMaxKeep))
 870                                         {
 871                                                 WhoWasGroup *a = *(n->begin());
 872                                                 DELETE(a);
 873                                                 n->erase(n->begin());
 874                                         }
 875                                 }
 876                         }
 877                 }
 878                 /* on rehash, refactor maps according to new conf values */
 879                 void PruneWhoWas(InspIRCd* ServerInstance, time_t t)
 880                 {
 881                         /* config values */
 882                         int groupsize = ServerInstance->Config->WhoWasGroupSize;
 883                         int maxgroups = ServerInstance->Config->WhoWasMaxGroups;
 884                         int maxkeep =   ServerInstance->Config->WhoWasMaxKeep;
 885
 886                         int groupcount = ServerInstance->whowas.size();
 887                         /* iterate whowas_fifo oldest first */
 888                         whowas_users_fifo::iterator iter, safeiter;
 889                         for (iter = ServerInstance->whowas_fifo.begin(); iter != ServerInstance->whowas_fifo.end(); iter++)
 890                         {
 891                                 /** prune all groups that has expired due to new maxkeep time and
 892                                  *  also any group number higher than new maxgroups. The oldest are
 893                                  *  removed first due to iteration over whowas_fifo
 894                                  */
 895                                 if (groupcount > maxgroups || iter->first < t - maxkeep)
 896                                 {
 897                                         whowas_set* n = (whowas_set*)ServerInstance->whowas.find(iter->second)->second;
 898                                         if (n->size())
 899                                         {
 900                                                 while (n->begin() != n->end())
 901                                                 {
 902                                                         WhoWasGroup *a = *(n->begin());
 903                                                         DELETE(a);
 904                                                         n->erase(n->begin());
 905                                                 }
 906                                         }
 907                                         ServerInstance->whowas.erase(iter->second);
 908                                         /* use a safe iter copy for erase and set the orig iter old valid ref by decrementing it */
 909                                         safeiter = iter;
 910                                         --iter;
 911                                         ServerInstance->whowas_fifo.erase(safeiter);
 912                                 }
 913                                 else {
 914                                         /* also trim individual groupsizes in case groupsize should have been lowered */
 915                                         whowas_set* n = (whowas_set*)ServerInstance->whowas.find(iter->second)->second;
 916                                         if (n->size())
 917                                         {
 918                                                 int nickcount = n->size();
 919                                                 while (n->begin() != n->end() && nickcount > groupsize)
 920                                                 {
 921                                                         WhoWasGroup *a = *(n->begin());
 922                                                         DELETE(a);
 923                                                         n->erase(n->begin());
 924                                                         nickcount--;
 925                                                 }
 926                                         }
 927                                 }
 928                                 groupcount--;
 929                         }
 930                 }
 931         };
 932 };
 933
 934 /* adds or updates an entry in the whowas list */
 935 void userrec::AddToWhoWas()
 936 {
 937         /* if whowas disabled */
 938         if (ServerInstance->Config->WhoWasGroupSize == 0 || ServerInstance->Config->WhoWasMaxGroups == 0)
 939         {
 940                 return;
 941         }
 942
 943         irc::whowas::whowas_users::iterator iter = ServerInstance->whowas.find(this->nick);
 944
 945         ServerInstance->Log(DEBUG,"Add to whowas lists");
 946
 947         if (iter == ServerInstance->whowas.end())
 948         {
 949                 ServerInstance->Log(DEBUG,"Adding new whowas set for %s",this->nick);
 950                 irc::whowas::whowas_set* n = new irc::whowas::whowas_set;
 951                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 952                 n->push_back(a);
 953                 ServerInstance->whowas[this->nick] = n;
 954                 ServerInstance->whowas_fifo.push_back(std::make_pair(ServerInstance->Time(),this->nick));
 955                 if ((int)(ServerInstance->whowas.size()) > ServerInstance->Config->WhoWasMaxGroups)
 956                 {
 957                         ServerInstance->Log(DEBUG,"Maxgroups of %d reached deleting oldest group '%s'",ServerInstance->Config->WhoWasMaxGroups, ServerInstance->whowas_fifo.begin()->second.c_str());
 958                         ServerInstance->whowas.erase(ServerInstance->whowas_fifo.begin()->second);
 959                         ServerInstance->whowas_fifo.pop_front();
 960                 }
 961         }
 962         else
 963         {
 964                 irc::whowas::whowas_set* group = (irc::whowas::whowas_set*)iter->second;
 965
 966                 ServerInstance->Log(DEBUG,"Using existing whowas group for %s",this->nick);
 967
 968                 if ((int)(group->size()) >= ServerInstance->Config->WhoWasGroupSize)
 969                 {
 970                         ServerInstance->Log(DEBUG,"Trimming existing group '%s' to %d entries",this->nick, ServerInstance->Config->WhoWasGroupSize);
 971                         irc::whowas::WhoWasGroup *a = (irc::whowas::WhoWasGroup*)*(group->begin());
 972                         DELETE(a);
 973                         group->pop_front();
 974                 }
 975
 976                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
 977                 group->push_back(a);
 978         }
 979 }
 980
 981 /* add a client connection to the sockets list */
 982 void userrec::AddClient(InspIRCd* Instance, int socket, int port, bool iscached, insp_inaddr ip)
 983 {
 984         std::string tempnick = ConvToStr(socket) + "-unknown";
 985         user_hash::iterator iter = Instance->clientlist->find(tempnick);
 986         const char *ipaddr = insp_ntoa(ip);
 987         userrec* New;
 988         int j = 0;
 989
 990         Instance->unregistered_count++;
 991
 992         /*
 993          * fix by brain.
 994          * as these nicknames are 'RFC impossible', we can be sure nobody is going to be
 995          * using one as a registered connection. As they are per fd, we can also safely assume
 996          * that we wont have collisions. Therefore, if the nick exists in the list, its only
 997          * used by a dead socket, erase the iterator so that the new client may reclaim it.
 998          * this was probably the cause of 'server ignores me when i hammer it with reconnects'
 999          * issue in earlier alphas/betas
1000          */
1001         if (iter != Instance->clientlist->end())
1002         {
1003                 userrec* goner = iter->second;
1004                 DELETE(goner);
1005                 Instance->clientlist->erase(iter);
1006         }
1007
1008         Instance->Log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr);
1009
1010         New = new userrec(Instance);
1011         (*(Instance->clientlist))[tempnick] = New;
1012         New->fd = socket;
1013         strlcpy(New->nick,tempnick.c_str(),NICKMAX-1);
1014
1015         New->server = Instance->FindServerNamePtr(Instance->Config->ServerName);
1016         /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
1017         strcpy(New->ident, "unknown");
1018
1019         New->registered = REG_NONE;
1020         New->signon = Instance->Time() + Instance->Config->dns_timeout;
1021         New->lastping = 1;
1022
1023         New->SetSockAddr(AF_FAMILY, ipaddr, port);
1024
1025         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
1026         for (const char* temp = New->GetIPString(); *temp && j < 64; temp++, j++)
1027                 New->dhost[j] = New->host[j] = *temp;
1028         New->dhost[j] = New->host[j] = 0;
1029
1030         Instance->AddLocalClone(New);
1031         Instance->AddGlobalClone(New);
1032
1033         ConnectClass* i = New->GetClass();
1034
1035         if ((!i) || (i->GetType() == CC_DENY))
1036         {
1037                 userrec::QuitUser(Instance, New,"Unauthorised connection");
1038                 return;
1039         }
1040
1041         New->pingmax = i->GetPingTime();
1042         New->nping = Instance->Time() + i->GetPingTime() + Instance->Config->dns_timeout;
1043         New->timeout = Instance->Time() + i->GetRegTimeout();
1044         New->flood = i->GetFlood();
1045         New->threshold = i->GetThreshold();
1046         New->sendqmax = i->GetSendqMax();
1047         New->recvqmax = i->GetRecvqMax();
1048
1049         Instance->local_users.push_back(New);
1050
1051         if ((Instance->local_users.size() > Instance->Config->SoftLimit) || (Instance->local_users.size() >= MAXCLIENTS))
1052         {
1053                 Instance->WriteOpers("*** Warning: softlimit value has been reached: %d clients", Instance->Config->SoftLimit);
1054                 userrec::QuitUser(Instance, New,"No more connections allowed");
1055                 return;
1056         }
1057
1058         /*
1059          * XXX -
1060          * this is done as a safety check to keep the file descriptors within range of fd_ref_table.
1061          * its a pretty big but for the moment valid assumption:
1062          * file descriptors are handed out starting at 0, and are recycled as theyre freed.
1063          * therefore if there is ever an fd over 65535, 65536 clients must be connected to the
1064          * irc server at once (or the irc server otherwise initiating this many connections, files etc)
1065          * which for the time being is a physical impossibility (even the largest networks dont have more
1066          * than about 10,000 users on ONE server!)
1067          */
1068         if ((unsigned int)socket >= MAX_DESCRIPTORS)
1069         {
1070                 userrec::QuitUser(Instance, New, "Server is full");
1071                 return;
1072         }
1073
1074         New->exempt = (Instance->XLines->matches_exception(New) != NULL);
1075         if (!New->exempt)
1076         {
1077                 ZLine* r = Instance->XLines->matches_zline(ipaddr);
1078                 if (r)
1079                 {
1080                         char reason[MAXBUF];
1081                         snprintf(reason,MAXBUF,"Z-Lined: %s",r->reason);
1082                         userrec::QuitUser(Instance, New, reason);
1083                         return;
1084                 }
1085         }
1086
1087         if (socket > -1)
1088         {
1089                 if (!Instance->SE->AddFd(New))
1090                 {
1091                         userrec::QuitUser(Instance, New, "Internal error handling connection");
1092                         return;
1093                 }
1094         }
1095
1096         /* NOTE: even if dns lookups are *off*, we still need to display this.
1097          * BOPM and other stuff requires it.
1098          */
1099         New->WriteServ("NOTICE Auth :*** Looking up your hostname...");
1100 }
1101
1102 unsigned long userrec::GlobalCloneCount()
1103 {
1104         clonemap::iterator x = ServerInstance->global_clones.find(this->GetIPString());
1105         if (x != ServerInstance->global_clones.end())
1106                 return x->second;
1107         else
1108                 return 0;
1109 }
1110
1111 unsigned long userrec::LocalCloneCount()
1112 {
1113         clonemap::iterator x = ServerInstance->local_clones.find(this->GetIPString());
1114         if (x != ServerInstance->local_clones.end())
1115                 return x->second;
1116         else
1117                 return 0;
1118 }
1119
1120 void userrec::FullConnect(CullList* Goners)
1121 {
1122         ServerInstance->stats->statsConnects++;
1123         this->idle_lastmsg = ServerInstance->Time();
1124
1125         ConnectClass* a = this->GetClass();
1126
1127         if ((!a) || (a->GetType() == CC_DENY))
1128         {
1129                 Goners->AddItem(this,"Unauthorised connection");
1130                 return;
1131         }
1132
1133         if ((!a->GetPass().empty()) && (!this->haspassed))
1134         {
1135                 Goners->AddItem(this,"Invalid password");
1136                 return;
1137         }
1138
1139         if (this->LocalCloneCount() > a->GetMaxLocal())
1140         {
1141                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (local)");
1142                 ServerInstance->WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
1143                 return;
1144         }
1145         else if (this->GlobalCloneCount() > a->GetMaxGlobal())
1146         {
1147                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (global)");
1148                 ServerInstance->WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a->GetMaxGlobal(), this->GetIPString());
1149                 return;
1150         }
1151
1152         if (!this->exempt)
1153         {
1154                 GLine* r = ServerInstance->XLines->matches_gline(this);
1155
1156                 if (r)
1157                 {
1158                         char reason[MAXBUF];
1159                         snprintf(reason,MAXBUF,"G-Lined: %s",r->reason);
1160                         Goners->AddItem(this, reason);
1161                         return;
1162                 }
1163
1164                 KLine* n = ServerInstance->XLines->matches_kline(this);
1165
1166                 if (n)
1167                 {
1168                         char reason[MAXBUF];
1169                         snprintf(reason,MAXBUF,"K-Lined: %s",n->reason);
1170                         Goners->AddItem(this, reason);
1171                         return;
1172                 }
1173         }
1174
1175
1176         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
1177         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
1178         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
1179         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
1180         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());
1181
1182         ServerInstance->Config->Send005(this);
1183
1184         this->ShowMOTD();
1185
1186         /* Now registered */
1187         if (ServerInstance->unregistered_count)
1188                 ServerInstance->unregistered_count--;
1189
1190         /*
1191          * fix 3 by brain, move registered = 7 below these so that spurious modes and host
1192          * changes dont go out onto the network and produce 'fake direction'.
1193          */
1194         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
1195
1196         this->registered = REG_ALL;
1197
1198         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
1199
1200         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString());
1201 }
1202
1203 /** userrec::UpdateNick()
1204  * re-allocates a nick in the user_hash after they change nicknames,
1205  * returns a pointer to the new user as it may have moved
1206  */
1207 userrec* userrec::UpdateNickHash(const char* New)
1208 {
1209         try
1210         {
1211                 //user_hash::iterator newnick;
1212                 user_hash::iterator oldnick = ServerInstance->clientlist->find(this->nick);
1213
1214                 if (!strcasecmp(this->nick,New))
1215                         return oldnick->second;
1216
1217                 if (oldnick == ServerInstance->clientlist->end())
1218                         return NULL; /* doesnt exist */
1219
1220                 userrec* olduser = oldnick->second;
1221                 (*(ServerInstance->clientlist))[New] = olduser;
1222                 ServerInstance->clientlist->erase(oldnick);
1223                 return olduser;
1224         }
1225
1226         catch (...)
1227         {
1228                 ServerInstance->Log(DEBUG,"Exception in userrec::UpdateNickHash()");
1229                 return NULL;
1230         }
1231 }
1232
1233 bool userrec::ForceNickChange(const char* newnick)
1234 {
1235         try
1236         {
1237                 int MOD_RESULT = 0;
1238
1239                 FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1240
1241                 if (MOD_RESULT)
1242                 {
1243                         ServerInstance->stats->statsCollisions++;
1244                         return false;
1245                 }
1246
1247                 if (ServerInstance->XLines->matches_qline(newnick))
1248                 {
1249                         ServerInstance->stats->statsCollisions++;
1250                         return false;
1251                 }
1252
1253                 if (this->registered == REG_ALL)
1254                 {
1255                         const char* pars[1];
1256                         pars[0] = newnick;
1257                         std::string cmd = "NICK";
1258                         return (ServerInstance->Parser->CallHandler(cmd, pars, 1, this) == CMD_SUCCESS);
1259                 }
1260                 return false;
1261         }
1262
1263         catch (...)
1264         {
1265                 ServerInstance->Log(DEBUG,"Exception in userrec::ForceNickChange()");
1266                 return false;
1267         }
1268 }
1269
1270 void userrec::SetSockAddr(int protocol_family, const char* ip, int port)
1271 {
1272         switch (protocol_family)
1273         {
1274 #ifdef SUPPORT_IP6LINKS
1275                 case AF_INET6:
1276                 {
1277                         ServerInstance->Log(DEBUG,"Set inet6 protocol address");
1278                         sockaddr_in6* sin = new sockaddr_in6;
1279                         sin->sin6_family = AF_INET6;
1280                         sin->sin6_port = port;
1281                         inet_pton(AF_INET6, ip, &sin->sin6_addr);
1282                         this->ip = (sockaddr*)sin;
1283                 }
1284                 break;
1285 #endif
1286                 case AF_INET:
1287                 {
1288                         ServerInstance->Log(DEBUG,"Set inet4 protocol address");
1289                         sockaddr_in* sin = new sockaddr_in;
1290                         sin->sin_family = AF_INET;
1291                         sin->sin_port = port;
1292                         inet_pton(AF_INET, ip, &sin->sin_addr);
1293                         this->ip = (sockaddr*)sin;
1294                 }
1295                 break;
1296                 default:
1297                         ServerInstance->Log(DEBUG,"Ut oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1298                 break;
1299         }
1300 }
1301
1302 int userrec::GetPort()
1303 {
1304         if (this->ip == NULL)
1305                 return 0;
1306
1307         switch (this->GetProtocolFamily())
1308         {
1309 #ifdef SUPPORT_IP6LINKS
1310                 case AF_INET6:
1311                 {
1312                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1313                         return sin->sin6_port;
1314                 }
1315                 break;
1316 #endif
1317                 case AF_INET:
1318                 {
1319                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1320                         return sin->sin_port;
1321                 }
1322                 break;
1323                 default:
1324                 break;
1325         }
1326         return 0;
1327 }
1328
1329 int userrec::GetProtocolFamily()
1330 {
1331         if (this->ip == NULL)
1332                 return 0;
1333
1334         sockaddr_in* sin = (sockaddr_in*)this->ip;
1335         return sin->sin_family;
1336 }
1337
1338 const char* userrec::GetIPString()
1339 {
1340         static char buf[1024];
1341
1342         if (this->ip == NULL)
1343                 return "";
1344
1345         switch (this->GetProtocolFamily())
1346         {
1347 #ifdef SUPPORT_IP6LINKS
1348                 case AF_INET6:
1349                 {
1350                         static char temp[1024];
1351
1352                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1353                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1354                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1355                         if (*buf == ':')
1356                         {
1357                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1358                                 *temp = '0';
1359                                 return temp;
1360                         }
1361                         return buf;
1362                 }
1363                 break;
1364 #endif
1365                 case AF_INET:
1366                 {
1367                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1368                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1369                         return buf;
1370                 }
1371                 break;
1372                 default:
1373                 break;
1374         }
1375         return "";
1376 }
1377
1378 const char* userrec::GetIPString(char* buf)
1379 {
1380         if (this->ip == NULL)
1381         {
1382                 *buf = 0;
1383                 return buf;
1384         }
1385
1386         switch (this->GetProtocolFamily())
1387         {
1388 #ifdef SUPPORT_IP6LINKS
1389                 case AF_INET6:
1390                 {
1391                         static char temp[1024];
1392
1393                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1394                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1395                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1396                         if (*buf == ':')
1397                         {
1398                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1399                                 *temp = '0';
1400                                 strlcpy(buf, temp, sizeof(temp));
1401                         }
1402                         return buf;
1403                 }
1404                 break;
1405 #endif
1406                 case AF_INET:
1407                 {
1408                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1409                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1410                         return buf;
1411                 }
1412                 break;
1413
1414                 default:
1415                 break;
1416         }
1417         return "";
1418 }
1419
1420 /** NOTE: We cannot pass a const reference to this method.
1421  * The string is changed by the workings of the method,
1422  * so that if we pass const ref, we end up copying it to
1423  * something we can change anyway. Makes sense to just let
1424  * the compiler do that copy for us.
1425  */
1426 void userrec::Write(std::string text)
1427 {
1428         if ((this->fd < 0) || (this->fd > MAX_DESCRIPTORS))
1429                 return;
1430
1431         try
1432         {
1433                 text.append("\r\n");
1434         }
1435         catch (...)
1436         {
1437                 ServerInstance->Log(DEBUG,"Exception in userrec::Write() std::string::append");
1438                 return;
1439         }
1440
1441         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1442         {
1443                 try
1444                 {
1445                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length());
1446                 }
1447                 catch (CoreException& modexcept)
1448                 {
1449                         ServerInstance->Log(DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1450                 }
1451         }
1452         else
1453         {
1454                 this->AddWriteBuf(text);
1455         }
1456         ServerInstance->stats->statsSent += text.length();
1457         this->ServerInstance->SE->WantWrite(this);
1458 }
1459
1460 /** Write()
1461  */
1462 void userrec::Write(const char *text, ...)
1463 {
1464         va_list argsPtr;
1465         char textbuffer[MAXBUF];
1466
1467         va_start(argsPtr, text);
1468         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1469         va_end(argsPtr);
1470
1471         this->Write(std::string(textbuffer));
1472 }
1473
1474 void userrec::WriteServ(const std::string& text)
1475 {
1476         char textbuffer[MAXBUF];
1477
1478         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1479         this->Write(std::string(textbuffer));
1480 }
1481
1482 /** WriteServ()
1483  *  Same as Write(), except `text' is prefixed with `:server.name '.
1484  */
1485 void userrec::WriteServ(const char* text, ...)
1486 {
1487         va_list argsPtr;
1488         char textbuffer[MAXBUF];
1489
1490         va_start(argsPtr, text);
1491         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1492         va_end(argsPtr);
1493
1494         this->WriteServ(std::string(textbuffer));
1495 }
1496
1497
1498 void userrec::WriteFrom(userrec *user, const std::string &text)
1499 {
1500         char tb[MAXBUF];
1501
1502         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1503
1504         this->Write(std::string(tb));
1505 }
1506
1507
1508 /* write text from an originating user to originating user */
1509
1510 void userrec::WriteFrom(userrec *user, const char* text, ...)
1511 {
1512         va_list argsPtr;
1513         char textbuffer[MAXBUF];
1514
1515         va_start(argsPtr, text);
1516         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1517         va_end(argsPtr);
1518
1519         this->WriteFrom(user, std::string(textbuffer));
1520 }
1521
1522
1523 /* write text to an destination user from a source user (e.g. user privmsg) */
1524
1525 void userrec::WriteTo(userrec *dest, const char *data, ...)
1526 {
1527         char textbuffer[MAXBUF];
1528         va_list argsPtr;
1529
1530         va_start(argsPtr, data);
1531         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1532         va_end(argsPtr);
1533
1534         this->WriteTo(dest, std::string(textbuffer));
1535 }
1536
1537 void userrec::WriteTo(userrec *dest, const std::string &data)
1538 {
1539         dest->WriteFrom(this, data);
1540 }
1541
1542
1543 void userrec::WriteCommon(const char* text, ...)
1544 {
1545         char textbuffer[MAXBUF];
1546         va_list argsPtr;
1547
1548         if (this->registered != REG_ALL)
1549                 return;
1550
1551         va_start(argsPtr, text);
1552         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1553         va_end(argsPtr);
1554
1555         this->WriteCommon(std::string(textbuffer));
1556 }
1557
1558 void userrec::WriteCommon(const std::string &text)
1559 {
1560         try
1561         {
1562                 bool sent_to_at_least_one = false;
1563                 char tb[MAXBUF];
1564
1565                 if (this->registered != REG_ALL)
1566                         return;
1567
1568                 uniq_id++;
1569
1570                 /* We dont want to be doing this n times, just once */
1571                 snprintf(tb,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1572                 std::string out = tb;
1573
1574                 for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1575                 {
1576                         CUList* ulist = v->first->GetUsers();
1577                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1578                         {
1579                                 if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1580                                 {
1581                                         already_sent[i->second->fd] = uniq_id;
1582                                         i->second->Write(out);
1583                                         sent_to_at_least_one = true;
1584                                 }
1585                         }
1586                 }
1587
1588                 /*
1589                  * if the user was not in any channels, no users will receive the text. Make sure the user
1590                  * receives their OWN message for WriteCommon
1591                  */
1592                 if (!sent_to_at_least_one)
1593                 {
1594                         this->WriteFrom(this,std::string(tb));
1595                 }
1596         }
1597
1598         catch (...)
1599         {
1600                 ServerInstance->Log(DEBUG,"Exception in userrec::WriteCommon()");
1601         }
1602 }
1603
1604
1605 /* write a formatted string to all users who share at least one common
1606  * channel, NOT including the source user e.g. for use in QUIT
1607  */
1608
1609 void userrec::WriteCommonExcept(const char* text, ...)
1610 {
1611         char textbuffer[MAXBUF];
1612         va_list argsPtr;
1613
1614         va_start(argsPtr, text);
1615         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1616         va_end(argsPtr);
1617
1618         this->WriteCommonExcept(std::string(textbuffer));
1619 }
1620
1621 void userrec::WriteCommonExcept(const std::string &text)
1622 {
1623         bool quit_munge = false;
1624         char oper_quit[MAXBUF];
1625         char textbuffer[MAXBUF];
1626         char tb1[MAXBUF];
1627         char tb2[MAXBUF];
1628         std::string out1;
1629         std::string out2;
1630
1631         strlcpy(textbuffer, text.c_str(), MAXBUF);
1632
1633         if (this->registered != REG_ALL)
1634                 return;
1635
1636         uniq_id++;
1637
1638         snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost(),textbuffer);
1639
1640         /* TODO: We need some form of WriteCommonExcept that will send two lines, one line to
1641          * opers and the other line to non-opers, then all this hidebans and hidesplits gunk
1642          * can go byebye.
1643          */
1644         if (ServerInstance->Config->HideSplits)
1645         {
1646                 char* check = textbuffer + 6;
1647
1648                 if (!strncasecmp(textbuffer, "QUIT :",6))
1649                 {
1650                         std::stringstream split(check);
1651                         std::string server_one;
1652                         std::string server_two;
1653
1654                         split >> server_one;
1655                         split >> server_two;
1656
1657                         if ((ServerInstance->FindServerName(server_one)) && (ServerInstance->FindServerName(server_two)))
1658                         {
1659                                 strlcpy(oper_quit,textbuffer,MAXQUIT);
1660                                 strlcpy(check,"*.net *.split",MAXQUIT);
1661                                 quit_munge = true;
1662                                 snprintf(tb2,MAXBUF,":%s %s",this->GetFullHost(),oper_quit);
1663                                 out2 = tb2;
1664                         }
1665                 }
1666         }
1667
1668         if ((ServerInstance->Config->HideBans) && (!quit_munge))
1669         {
1670                 if ((!strncasecmp(textbuffer, "QUIT :G-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :K-Lined:",14))
1671                 || (!strncasecmp(textbuffer, "QUIT :Q-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :Z-Lined:",14)))
1672                 {
1673                         char* check = textbuffer + 13;
1674                         strlcpy(oper_quit,textbuffer,MAXQUIT);
1675                         *check = 0;  // We don't need to strlcpy, we just chop it from the :
1676                         quit_munge = true;
1677                         snprintf(tb2,MAXBUF,":%s %s",this->GetFullHost(),oper_quit);
1678                         out2 = tb2;
1679                 }
1680         }
1681
1682         out1 = tb1;
1683
1684         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1685         {
1686                 CUList *ulist = v->first->GetUsers();
1687                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1688                 {
1689                         if (this != i->second)
1690                         {
1691                                 if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1692                                 {
1693                                         already_sent[i->second->fd] = uniq_id;
1694                                         if (quit_munge)
1695                                                 i->second->Write(*i->second->oper ? out2 : out1);
1696                                         else
1697                                                 i->second->Write(out1);
1698                                 }
1699                         }
1700                 }
1701         }
1702
1703 }
1704
1705 void userrec::WriteWallOps(const std::string &text)
1706 {
1707         /* Does nothing if theyre not opered */
1708         if ((!*this->oper) && (IS_LOCAL(this)))
1709                 return;
1710
1711         std::string wallop = "WALLOPS :";
1712
1713         try
1714         {
1715                 wallop.append(text);
1716         }
1717         catch (...)
1718         {
1719                 ServerInstance->Log(DEBUG,"Exception in userrec::Write() std::string::append");
1720                 return;
1721         }
1722
1723         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1724         {
1725                 userrec* t = *i;
1726                 if ((IS_LOCAL(t)) && (t->modes[UM_WALLOPS]))
1727                         this->WriteTo(t,wallop);
1728         }
1729 }
1730
1731 void userrec::WriteWallOps(const char* text, ...)
1732 {
1733         char textbuffer[MAXBUF];
1734         va_list argsPtr;
1735
1736         va_start(argsPtr, text);
1737         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1738         va_end(argsPtr);
1739
1740         this->WriteWallOps(std::string(textbuffer));
1741 }
1742
1743 /* return 0 or 1 depending if users u and u2 share one or more common channels
1744  * (used by QUIT, NICK etc which arent channel specific notices)
1745  *
1746  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1747  * the first users channels then the second users channels within the outer loop,
1748  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1749  * all possible iterations). However this new function instead checks against the
1750  * channel's userlist in the inner loop which is a std::map<userrec*,userrec*>
1751  * and saves us time as we already know what pointer value we are after.
1752  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1753  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1754  */
1755 bool userrec::SharesChannelWith(userrec *other)
1756 {
1757         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1758                 return false;
1759
1760         /* Outer loop */
1761         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1762         {
1763                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1764                  * by replacing it with a map::find which *should* be more efficient
1765                  */
1766                 if (i->first->HasUser(other))
1767                         return true;
1768         }
1769         return false;
1770 }
1771
1772 bool userrec::ChangeName(const char* gecos)
1773 {
1774         if (!strcmp(gecos, this->fullname))
1775                 return true;
1776
1777         if (IS_LOCAL(this))
1778         {
1779                 int MOD_RESULT = 0;
1780                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1781                 if (MOD_RESULT)
1782                         return false;
1783                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1784         }
1785         strlcpy(this->fullname,gecos,MAXGECOS+1);
1786         return true;
1787 }
1788
1789 bool userrec::ChangeDisplayedHost(const char* host)
1790 {
1791         if (!strcmp(host, this->dhost))
1792                 return true;
1793
1794         if (IS_LOCAL(this))
1795         {
1796                 int MOD_RESULT = 0;
1797                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host));
1798                 if (MOD_RESULT)
1799                         return false;
1800                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host));
1801         }
1802         if (this->ServerInstance->Config->CycleHosts)
1803                 this->WriteCommonExcept("QUIT :Changing hosts");
1804
1805         /* Fix by Om: userrec::dhost is 65 long, this was truncating some long hosts */
1806         strlcpy(this->dhost,host,64);
1807
1808         if (this->ServerInstance->Config->CycleHosts)
1809         {
1810                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1811                 {
1812                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1813                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1814                         if (n.length() > 0)
1815                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1816                 }
1817         }
1818
1819         if (IS_LOCAL(this))
1820                 this->WriteServ("396 %s %s :is now your hidden host",this->nick,this->dhost);
1821
1822         return true;
1823 }
1824
1825 bool userrec::ChangeIdent(const char* newident)
1826 {
1827         if (!strcmp(newident, this->ident))
1828                 return true;
1829
1830         if (this->ServerInstance->Config->CycleHosts)
1831                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1832
1833         strlcpy(this->ident, newident, IDENTMAX+2);
1834
1835         if (this->ServerInstance->Config->CycleHosts)
1836         {
1837                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1838                 {
1839                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1840                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1841                         if (n.length() > 0)
1842                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1843                 }
1844         }
1845
1846         return true;
1847 }
1848
1849 void userrec::NoticeAll(char* text, ...)
1850 {
1851         char textbuffer[MAXBUF];
1852         char formatbuffer[MAXBUF];
1853         va_list argsPtr;
1854
1855         va_start(argsPtr, text);
1856         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1857         va_end(argsPtr);
1858
1859         snprintf(formatbuffer,MAXBUF,":%s NOTICE $* :%s", this->GetFullHost(), textbuffer);
1860         std::string fmt = formatbuffer;
1861
1862         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1863         {
1864                 (*i)->Write(fmt);
1865         }
1866 }
1867
1868
1869 std::string userrec::ChannelList(userrec* source)
1870 {
1871         try
1872         {
1873                 std::string list;
1874                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1875                 {
1876                         /* If the target is the same as the sender, let them see all their channels.
1877                          * If the channel is NOT private/secret OR the user shares a common channel
1878                          * If the user is an oper, and the <options:operspywhois> option is set.
1879                          */
1880                         if ((source == this) || (*source->oper && ServerInstance->Config->OperSpyWhois) || (((!i->first->modes[CM_PRIVATE]) && (!i->first->modes[CM_SECRET])) || (i->first->HasUser(source))))
1881                         {
1882                                 list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" ");
1883                         }
1884                 }
1885                 return list;
1886         }
1887         catch (...)
1888         {
1889                 ServerInstance->Log(DEBUG,"Exception in userrec::ChannelList()");
1890                 return "";
1891         }
1892 }
1893
1894 void userrec::SplitChanList(userrec* dest, const std::string &cl)
1895 {
1896         std::string line;
1897         std::ostringstream prefix;
1898         std::string::size_type start, pos, length;
1899
1900         try
1901         {
1902                 prefix << this->nick << " " << dest->nick << " :";
1903                 line = prefix.str();
1904                 int namelen = strlen(ServerInstance->Config->ServerName) + 6;
1905
1906                 for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1907                 {
1908                         length = (pos == std::string::npos) ? cl.length() : pos;
1909
1910                         if (line.length() + namelen + length - start > 510)
1911                         {
1912                                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1913                                 line = prefix.str();
1914                         }
1915
1916                         if(pos == std::string::npos)
1917                         {
1918                                 line.append(cl.substr(start, length - start));
1919                                 break;
1920                         }
1921                         else
1922                         {
1923                                 line.append(cl.substr(start, length - start + 1));
1924                         }
1925                 }
1926
1927                 if (line.length())
1928                 {
1929                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1930                 }
1931         }
1932
1933         catch (...)
1934         {
1935                 ServerInstance->Log(DEBUG,"Exception in userrec::SplitChanList()");
1936         }
1937 }
1938
1939
1940 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1941  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1942  * then their ip will be taken as 'priority' anyway, so for example,
1943  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1944  */
1945 ConnectClass* userrec::GetClass()
1946 {
1947         for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1948         {
1949                 if ((match(this->GetIPString(),i->GetHost().c_str(),true)) || (match(this->host,i->GetHost().c_str())))
1950                         return &(*i);
1951         }
1952         return NULL;
1953 }
1954
1955 void userrec::PurgeEmptyChannels()
1956 {
1957         std::vector<chanrec*> to_delete;
1958
1959         // firstly decrement the count on each channel
1960         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1961         {
1962                 f->first->RemoveAllPrefixes(this);
1963                 if (f->first->DelUser(this) == 0)
1964                 {
1965                         /* No users left in here, mark it for deletion */
1966                         try
1967                         {
1968                                 to_delete.push_back(f->first);
1969                         }
1970                         catch (...)
1971                         {
1972                                 ServerInstance->Log(DEBUG,"Exception in userrec::PurgeEmptyChannels to_delete.push_back()");
1973                         }
1974                 }
1975         }
1976
1977         for (std::vector<chanrec*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1978         {
1979                 chanrec* thischan = *n;
1980                 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
1981                 if (i2 != ServerInstance->chanlist->end())
1982                 {
1983                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1984                         DELETE(i2->second);
1985                         ServerInstance->chanlist->erase(i2);
1986                         this->chans.erase(*n);
1987                 }
1988         }
1989
1990         this->UnOper();
1991 }
1992
1993 void userrec::ShowMOTD()
1994 {
1995         if (!ServerInstance->Config->MOTD.size())
1996         {
1997                 this->WriteServ("422 %s :Message of the day file is missing.",this->nick);
1998                 return;
1999         }
2000         this->WriteServ("375 %s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
2001
2002         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
2003                 this->WriteServ("372 %s :- %s",this->nick,i->c_str());
2004
2005         this->WriteServ("376 %s :End of message of the day.", this->nick);
2006 }
2007
2008 void userrec::ShowRULES()
2009 {
2010         if (!ServerInstance->Config->RULES.size())
2011         {
2012                 this->WriteServ("NOTICE %s :Rules file is missing.",this->nick);
2013                 return;
2014         }
2015         this->WriteServ("NOTICE %s :%s rules",this->nick,ServerInstance->Config->ServerName);
2016
2017         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
2018                 this->WriteServ("NOTICE %s :%s",this->nick,i->c_str());
2019
2020         this->WriteServ("NOTICE %s :End of %s rules.",this->nick,ServerInstance->Config->ServerName);
2021 }
2022
2023 void userrec::HandleEvent(EventType et, int errornum)
2024 {
2025         /* WARNING: May delete this user! */
2026         int thisfd = this->GetFd();
2027
2028         try
2029         {
2030                 switch (et)
2031                 {
2032                         case EVENT_READ:
2033                                 ServerInstance->ProcessUser(this);
2034                         break;
2035                         case EVENT_WRITE:
2036                                 this->FlushWriteBuf();
2037                         break;
2038                         case EVENT_ERROR:
2039                                 /** This should be safe, but dont DARE do anything after it -- Brain */
2040                                 this->SetWriteError(errornum ? strerror(errornum) : "EOF from client");
2041                         break;
2042                 }
2043         }
2044         catch (...)
2045         {
2046                 ServerInstance->Log(DEBUG,"Exception in userrec::HandleEvent intercepted");
2047         }
2048
2049         /* If the user has raised an error whilst being processed, quit them now we're safe to */
2050         if ((ServerInstance->SE->GetRef(thisfd) == this))
2051         {
2052                 if (!WriteError.empty())
2053                 {
2054                         userrec::QuitUser(ServerInstance, this, GetWriteError());
2055                 }
2056         }
2057 }
2058