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                                         /* Invalidate cache */
 216                                         this->bound_user->InvalidateCache();
 217                                 }
 218                         }
 219                         else
 220                         {
 221                                 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());
 222                         }
 223                 }
 224                 else
 225                 {
 226                         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());
 227                 }
 228         }
 229 }
 230
 231 void UserResolver::OnError(ResolverError e, const std::string &errormessage)
 232 {
 233         if (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user)
 234         {
 235                 /* Error message here */
 236                 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());
 237                 this->bound_user->dns_done = true;
 238         }
 239 }
 240
 241
 242 bool userrec::IsNoticeMaskSet(unsigned char sm)
 243 {
 244         return (snomasks[sm-65]);
 245 }
 246
 247 void userrec::SetNoticeMask(unsigned char sm, bool value)
 248 {
 249         snomasks[sm-65] = value;
 250 }
 251
 252 const char* userrec::FormatNoticeMasks()
 253 {
 254         static char data[MAXBUF];
 255         int offset = 0;
 256
 257         for (int n = 0; n < 64; n++)
 258         {
 259                 if (snomasks[n])
 260                         data[offset++] = n+65;
 261         }
 262
 263         data[offset] = 0;
 264         return data;
 265 }
 266
 267
 268
 269 bool userrec::IsModeSet(unsigned char m)
 270 {
 271         return (modes[m-65]);
 272 }
 273
 274 void userrec::SetMode(unsigned char m, bool value)
 275 {
 276         modes[m-65] = value;
 277 }
 278
 279 const char* userrec::FormatModes()
 280 {
 281         static char data[MAXBUF];
 282         int offset = 0;
 283         for (int n = 0; n < 64; n++)
 284         {
 285                 if (modes[n])
 286                         data[offset++] = n+65;
 287         }
 288         data[offset] = 0;
 289         return data;
 290 }
 291
 292 void userrec::DecrementModes()
 293 {
 294         for (int n = 0; n < 64; n++)
 295         {
 296                 if (modes[n])
 297                 {
 298                         ModeHandler* mh = ServerInstance->Modes->FindMode(n+65, MODETYPE_USER);
 299                         if (mh)
 300                                 mh->ChangeCount(-1);
 301                 }
 302         }
 303 }
 304
 305 userrec::userrec(InspIRCd* Instance) : ServerInstance(Instance)
 306 {
 307         ServerInstance->Log(DEBUG,"userrec::userrec(): Instance: %08x",ServerInstance);
 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         ServerInstance->Log(DEBUG,"Removing invites");
 507         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 508         {
 509                 if (channel == *i)
 510                 {
 511                         invites.erase(i);
 512                         return;
 513                 }
 514         }
 515 }
 516
 517 bool userrec::HasPermission(const std::string &command)
 518 {
 519         char* mycmd;
 520         char* savept;
 521         char* savept2;
 522
 523         /*
 524          * users on remote servers can completely bypass all permissions based checks.
 525          * This prevents desyncs when one server has different type/class tags to another.
 526          * That having been said, this does open things up to the possibility of source changes
 527          * allowing remote kills, etc - but if they have access to the src, they most likely have
 528          * access to the conf - so it's an end to a means either way.
 529          */
 530         if (!IS_LOCAL(this))
 531                 return true;
 532
 533         // are they even an oper at all?
 534         if (*this->oper)
 535         {
 536                 opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper);
 537                 if (iter_opertype != ServerInstance->Config->opertypes.end())
 538                 {
 539                         char* Classes = strdup(iter_opertype->second);
 540                         char* myclass = strtok_r(Classes," ",&savept);
 541                         while (myclass)
 542                         {
 543                                 operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass);
 544                                 if (iter_operclass != ServerInstance->Config->operclass.end())
 545                                 {
 546                                         char* CommandList = strdup(iter_operclass->second);
 547                                         mycmd = strtok_r(CommandList," ",&savept2);
 548                                         while (mycmd)
 549                                         {
 550                                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 551                                                 {
 552                                                         free(Classes);
 553                                                         free(CommandList);
 554                                                         return true;
 555                                                 }
 556                                                 mycmd = strtok_r(NULL," ",&savept2);
 557                                         }
 558                                         free(CommandList);
 559                                 }
 560                                 myclass = strtok_r(NULL," ",&savept);
 561                         }
 562                         free(Classes);
 563                 }
 564         }
 565         return false;
 566 }
 567
 568 /** NOTE: We cannot pass a const reference to this method.
 569  * The string is changed by the workings of the method,
 570  * so that if we pass const ref, we end up copying it to
 571  * something we can change anyway. Makes sense to just let
 572  * the compiler do that copy for us.
 573  */
 574 bool userrec::AddBuffer(std::string a)
 575 {
 576         try
 577         {
 578                 std::string::size_type i = a.rfind('\r');
 579
 580                 while (i != std::string::npos)
 581                 {
 582                         a.erase(i, 1);
 583                         i = a.rfind('\r');
 584                 }
 585
 586                 if (a.length())
 587                         recvq.append(a);
 588
 589                 if (recvq.length() > (unsigned)this->recvqmax)
 590                 {
 591                         this->SetWriteError("RecvQ exceeded");
 592                         ServerInstance->WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 593                         return false;
 594                 }
 595
 596                 return true;
 597         }
 598
 599         catch (...)
 600         {
 601                 ServerInstance->Log(DEBUG,"Exception in userrec::AddBuffer()");
 602                 return false;
 603         }
 604 }
 605
 606 bool userrec::BufferIsReady()
 607 {
 608         return (recvq.find('\n') != std::string::npos);
 609 }
 610
 611 void userrec::ClearBuffer()
 612 {
 613         recvq = "";
 614 }
 615
 616 std::string userrec::GetBuffer()
 617 {
 618         try
 619         {
 620                 if (!recvq.length())
 621                         return "";
 622
 623                 /* Strip any leading \r or \n off the string.
 624                  * Usually there are only one or two of these,
 625                  * so its is computationally cheap to do.
 626                  */
 627                 while ((*recvq.begin() == '\r') || (*recvq.begin() == '\n'))
 628                         recvq.erase(recvq.begin());
 629
 630                 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 631                 {
 632                         /* Find the first complete line, return it as the
 633                          * result, and leave the recvq as whats left
 634                          */
 635                         if (*x == '\n')
 636                         {
 637                                 std::string ret = std::string(recvq.begin(), x);
 638                                 recvq.erase(recvq.begin(), x + 1);
 639                                 return ret;
 640                         }
 641                 }
 642                 return "";
 643         }
 644
 645         catch (...)
 646         {
 647                 ServerInstance->Log(DEBUG,"Exception in userrec::GetBuffer()");
 648                 return "";
 649         }
 650 }
 651
 652 void userrec::AddWriteBuf(const std::string &data)
 653 {
 654         if (*this->GetWriteError())
 655                 return;
 656
 657         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 658         {
 659                 /*
 660                  * Fix by brain - Set the error text BEFORE calling writeopers, because
 661                  * if we dont it'll recursively  call here over and over again trying
 662                  * to repeatedly add the text to the sendq!
 663                  */
 664                 this->SetWriteError("SendQ exceeded");
 665                 ServerInstance->WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 666                 return;
 667         }
 668
 669         try
 670         {
 671                 if (data.length() > 512)
 672                         sendq.append(data.substr(0,510)).append("\r\n");
 673                 else
 674                         sendq.append(data);
 675         }
 676         catch (...)
 677         {
 678                 this->SetWriteError("SendQ exceeded");
 679                 ServerInstance->WriteOpers("*** User %s SendQ got an exception",this->nick);
 680         }
 681 }
 682
 683 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 684 void userrec::FlushWriteBuf()
 685 {
 686         try
 687         {
 688                 if ((this->fd == FD_MAGIC_NUMBER) || (*this->GetWriteError()))
 689                 {
 690                         sendq = "";
 691                 }
 692                 if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 693                 {
 694                         int old_sendq_length = sendq.length();
 695                         int n_sent = write(this->fd, this->sendq.data(), this->sendq.length());
 696                         if (n_sent == -1)
 697                         {
 698                                 if (errno == EAGAIN)
 699                                 {
 700                                         /* The socket buffer is full. This isnt fatal,
 701                                          * try again later.
 702                                          */
 703                                         ServerInstance->Log(DEBUG,"EAGAIN, want write");
 704                                         this->ServerInstance->SE->WantWrite(this);
 705                                 }
 706                                 else
 707                                 {
 708                                         /* Fatal error, set write error and bail
 709                                          */
 710                                         this->SetWriteError(strerror(errno));
 711                                         return;
 712                                 }
 713                         }
 714                         else
 715                         {
 716                                 /* advance the queue */
 717                                 if (n_sent)
 718                                         this->sendq = this->sendq.substr(n_sent);
 719                                 /* update the user's stats counters */
 720                                 this->bytes_out += n_sent;
 721                                 this->cmds_out++;
 722                                 if (n_sent != old_sendq_length)
 723                                 {
 724                                         ServerInstance->Log(DEBUG,"Not all written, want write");
 725                                         this->ServerInstance->SE->WantWrite(this);
 726                                 }
 727                         }
 728                 }
 729         }
 730
 731         catch (...)
 732         {
 733                 ServerInstance->Log(DEBUG,"Exception in userrec::FlushWriteBuf()");
 734         }
 735 }
 736
 737 void userrec::SetWriteError(const std::string &error)
 738 {
 739         try
 740         {
 741                 // don't try to set the error twice, its already set take the first string.
 742                 if (this->WriteError.empty())
 743                 {
 744                         ServerInstance->Log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
 745                         this->WriteError = error;
 746                 }
 747         }
 748
 749         catch (...)
 750         {
 751                 ServerInstance->Log(DEBUG,"Exception in userrec::SetWriteError()");
 752         }
 753 }
 754
 755 const char* userrec::GetWriteError()
 756 {
 757         return this->WriteError.c_str();
 758 }
 759
 760 void userrec::Oper(const std::string &opertype)
 761 {
 762         try
 763         {
 764                 this->modes[UM_OPERATOR] = 1;
 765                 this->WriteServ("MODE %s :+o", this->nick);
 766                 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 767                 ServerInstance->Log(DEFAULT,"OPER: %s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 768                 strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 769                 ServerInstance->all_opers.push_back(this);
 770                 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype));
 771         }
 772
 773         catch (...)
 774         {
 775                 ServerInstance->Log(DEBUG,"Exception in userrec::Oper()");
 776         }
 777 }
 778
 779 void userrec::UnOper()
 780 {
 781         try
 782         {
 783                 if (*this->oper)
 784                 {
 785                         *this->oper = 0;
 786                         this->modes[UM_OPERATOR] = 0;
 787                         for (std::vector<userrec*>::iterator a = ServerInstance->all_opers.begin(); a < ServerInstance->all_opers.end(); a++)
 788                         {
 789                                 if (*a == this)
 790                                 {
 791                                         ServerInstance->Log(DEBUG,"Oper removed from optimization list");
 792                                         ServerInstance->all_opers.erase(a);
 793                                         return;
 794                                 }
 795                         }
 796                 }
 797         }
 798
 799         catch (...)
 800         {
 801                 ServerInstance->Log(DEBUG,"Exception in userrec::UnOper()");
 802         }
 803 }
 804
 805 void userrec::QuitUser(InspIRCd* Instance, userrec *user, const std::string &quitreason)
 806 {
 807         user_hash::iterator iter = Instance->clientlist->find(user->nick);
 808         std::string reason = quitreason;
 809
 810         if (reason.length() > MAXQUIT - 1)
 811                 reason.resize(MAXQUIT - 1);
 812
 813         if (user->registered != REG_ALL)
 814                 if (Instance->unregistered_count)
 815                         Instance->unregistered_count--;
 816
 817         if (IS_LOCAL(user))
 818         {
 819                 user->Write("ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason.c_str());
 820                 if ((!user->sendq.empty()) && (!(*user->GetWriteError())))
 821                         user->FlushWriteBuf();
 822         }
 823
 824         if (user->registered == REG_ALL)
 825         {
 826                 user->PurgeEmptyChannels();
 827                 user->WriteCommonExcept("QUIT :%s",reason.c_str());
 828                 FOREACH_MOD_I(Instance,I_OnUserQuit,OnUserQuit(user,reason));
 829         }
 830
 831         FOREACH_MOD_I(Instance,I_OnUserDisconnect,OnUserDisconnect(user));
 832
 833         if (IS_LOCAL(user))
 834         {
 835                 if (Instance->Config->GetIOHook(user->GetPort()))
 836                 {
 837                         try
 838                         {
 839                                 Instance->Config->GetIOHook(user->GetPort())->OnRawSocketClose(user->fd);
 840                         }
 841                         catch (CoreException& modexcept)
 842                         {
 843                                 Instance->Log(DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 844                         }
 845                 }
 846
 847                 Instance->SE->DelFd(user);
 848                 user->CloseSocket();
 849         }
 850
 851         /*
 852          * this must come before the ServerInstance->SNO->WriteToSnoMaskso that it doesnt try to fill their buffer with anything
 853          * if they were an oper with +sn +qQ.
 854          */
 855         if (user->registered == REG_ALL)
 856         {
 857                 if (IS_LOCAL(user))
 858                         Instance->SNO->WriteToSnoMask('q',"Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason.c_str());
 859                 else
 860                         Instance->SNO->WriteToSnoMask('Q',"Client exiting on server %s: %s!%s@%s [%s]",user->server,user->nick,user->ident,user->host,reason.c_str());
 861                 user->AddToWhoWas();
 862         }
 863
 864         if (iter != Instance->clientlist->end())
 865         {
 866                 Instance->Log(DEBUG,"deleting user hash value %lx",(unsigned long)user);
 867                 if (IS_LOCAL(user))
 868                 {
 869                         std::vector<userrec*>::iterator x = find(Instance->local_users.begin(),Instance->local_users.end(),user);
 870                         if (x != Instance->local_users.end())
 871                                 Instance->local_users.erase(x);
 872                 }
 873                 Instance->clientlist->erase(iter);
 874                 DELETE(user);
 875         }
 876 }
 877
 878 namespace irc
 879 {
 880         namespace whowas
 881         {
 882
 883                 WhoWasGroup::WhoWasGroup(userrec* user) : host(NULL), dhost(NULL), ident(NULL), server(NULL), gecos(NULL), signon(user->signon)
 884                 {
 885                         this->host = strdup(user->host);
 886                         this->dhost = strdup(user->dhost);
 887                         this->ident = strdup(user->ident);
 888                         this->server = user->server;
 889                         this->gecos = strdup(user->fullname);
 890                 }
 891
 892                 WhoWasGroup::~WhoWasGroup()
 893                 {
 894                         if (host)
 895                                 free(host);
 896                         if (dhost)
 897                                 free(dhost);
 898                         if (ident)
 899                                 free(ident);
 900                         if (gecos)
 901                                 free(gecos);
 902                 }
 903
 904                 /* every hour, run this function which removes all entries older than Config->WhoWasMaxKeep */
 905                 void MaintainWhoWas(InspIRCd* ServerInstance, time_t t)
 906                 {
 907                         for (whowas_users::iterator iter = ServerInstance->whowas.begin(); iter != ServerInstance->whowas.end(); iter++)
 908                         {
 909                                 whowas_set* n = (whowas_set*)iter->second;
 910                                 if (n->size())
 911                                 {
 912                                         while ((n->begin() != n->end()) && ((*n->begin())->signon < t - ServerInstance->Config->WhoWasMaxKeep))
 913                                         {
 914                                                 WhoWasGroup *a = *(n->begin());
 915                                                 DELETE(a);
 916                                                 n->erase(n->begin());
 917                                         }
 918                                 }
 919                         }
 920                 }
 921                 /* on rehash, refactor maps according to new conf values */
 922                 void PruneWhoWas(InspIRCd* ServerInstance, time_t t)
 923                 {
 924                         /* config values */
 925                         int groupsize = ServerInstance->Config->WhoWasGroupSize;
 926                         int maxgroups = ServerInstance->Config->WhoWasMaxGroups;
 927                         int maxkeep =   ServerInstance->Config->WhoWasMaxKeep;
 928
 929                         /* first cut the list to new size (maxgroups) and also prune entries that are timed out. */
 930                         whowas_users::iterator iter;
 931                         int fifosize;
 932                         while ((fifosize = (int)ServerInstance->whowas_fifo.size()) > 0)
 933                         {
 934                                 if (fifosize > maxgroups || ServerInstance->whowas_fifo[0].first < t - maxkeep)
 935                                 {
 936                                         iter = ServerInstance->whowas.find(ServerInstance->whowas_fifo[0].second);
 937                                         /* hopefully redundant integrity check, but added while debugging r6216 */
 938                                         if (iter == ServerInstance->whowas.end())
 939                                         {
 940                                                 /* this should never happen, if it does maps are corrupt */
 941                                                 ServerInstance->Log(DEBUG, "Whowas maps got corrupted! (1)");
 942                                                 return;
 943                                         }
 944                                         whowas_set* n = (whowas_set*)iter->second;
 945                                         if (n->size())
 946                                         {
 947                                                 while (n->begin() != n->end())
 948                                                 {
 949                                                         WhoWasGroup *a = *(n->begin());
 950                                                         DELETE(a);
 951                                                         n->pop_front();
 952                                                 }
 953                                         }
 954                                         ServerInstance->whowas.erase(iter);
 955                                         ServerInstance->whowas_fifo.pop_front();
 956                                 }
 957                                 else
 958                                         break;
 959                         }
 960
 961                         /* Then cut the whowas sets to new size (groupsize) */
 962                         for (int i = 0; i < fifosize; i++)
 963                         {
 964                                 iter = ServerInstance->whowas.find(ServerInstance->whowas_fifo[0].second);
 965                                 /* hopefully redundant integrity check, but added while debugging r6216 */
 966                                 if (iter == ServerInstance->whowas.end())
 967                                 {
 968                                         /* this should never happen, if it does maps are corrupt */
 969                                         ServerInstance->Log(DEBUG, "Whowas maps got corrupted! (2)");
 970                                         return;
 971                                 }
 972                                 whowas_set* n = (whowas_set*)iter->second;
 973                                 if (n->size())
 974                                 {
 975                                         int nickcount = n->size();
 976                                         while (n->begin() != n->end() && nickcount > groupsize)
 977                                         {
 978                                                 WhoWasGroup *a = *(n->begin());
 979                                                 DELETE(a);
 980                                                 n->pop_front();
 981                                                 nickcount--;
 982                                         }
 983                                 }
 984                         }
 985                 }
 986         };
 987 };
 988
 989 /* adds or updates an entry in the whowas list */
 990 void userrec::AddToWhoWas()
 991 {
 992         /* if whowas disabled */
 993         if (ServerInstance->Config->WhoWasGroupSize == 0 || ServerInstance->Config->WhoWasMaxGroups == 0)
 994         {
 995                 return;
 996         }
 997
 998         irc::whowas::whowas_users::iterator iter = ServerInstance->whowas.find(this->nick);
 999
1000         ServerInstance->Log(DEBUG,"Add to whowas lists");
1001
1002         if (iter == ServerInstance->whowas.end())
1003         {
1004                 ServerInstance->Log(DEBUG,"Adding new whowas set for %s",this->nick);
1005
1006                 irc::whowas::whowas_set* n = new irc::whowas::whowas_set;
1007                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
1008                 n->push_back(a);
1009                 ServerInstance->whowas[this->nick] = n;
1010                 ServerInstance->whowas_fifo.push_back(std::make_pair(ServerInstance->Time(),this->nick));
1011
1012                 if ((int)(ServerInstance->whowas.size()) > ServerInstance->Config->WhoWasMaxGroups)
1013                 {
1014                         ServerInstance->Log(DEBUG,"Maxgroups of %d reached deleting oldest group '%s'",ServerInstance->Config->WhoWasMaxGroups, ServerInstance->whowas_fifo[0].second.c_str());
1015
1016                         irc::whowas::whowas_users::iterator iter = ServerInstance->whowas.find(ServerInstance->whowas_fifo[0].second);
1017                         if (iter != ServerInstance->whowas.end())
1018                         {
1019                                 irc::whowas::whowas_set* n = (irc::whowas::whowas_set*)iter->second;
1020                                 if (n->size())
1021                                 {
1022                                         while (n->begin() != n->end())
1023                                         {
1024                                                 irc::whowas::WhoWasGroup *a = *(n->begin());
1025                                                 DELETE(a);
1026                                                 n->pop_front();
1027                                         }
1028                                 }
1029                                 ServerInstance->whowas.erase(iter);
1030                         }
1031                         ServerInstance->whowas_fifo.pop_front();
1032                 }
1033         }
1034         else
1035         {
1036                 irc::whowas::whowas_set* group = (irc::whowas::whowas_set*)iter->second;
1037
1038                 ServerInstance->Log(DEBUG,"Using existing whowas group for %s",this->nick);
1039
1040                 irc::whowas::WhoWasGroup *a = new irc::whowas::WhoWasGroup(this);
1041                 group->push_back(a);
1042
1043                 if ((int)(group->size()) > ServerInstance->Config->WhoWasGroupSize)
1044                 {
1045                         ServerInstance->Log(DEBUG,"Trimming existing group '%s' to %d entries",this->nick, ServerInstance->Config->WhoWasGroupSize);
1046                         irc::whowas::WhoWasGroup *a = (irc::whowas::WhoWasGroup*)*(group->begin());
1047                         DELETE(a);
1048                         group->pop_front();
1049                 }
1050         }
1051 }
1052
1053 /* add a client connection to the sockets list */
1054 void userrec::AddClient(InspIRCd* Instance, int socket, int port, bool iscached, insp_inaddr ip)
1055 {
1056         std::string tempnick = ConvToStr(socket) + "-unknown";
1057         user_hash::iterator iter = Instance->clientlist->find(tempnick);
1058         const char *ipaddr = insp_ntoa(ip);
1059         userrec* New;
1060         int j = 0;
1061
1062         Instance->unregistered_count++;
1063
1064         /*
1065          * fix by brain.
1066          * as these nicknames are 'RFC impossible', we can be sure nobody is going to be
1067          * using one as a registered connection. As they are per fd, we can also safely assume
1068          * that we wont have collisions. Therefore, if the nick exists in the list, its only
1069          * used by a dead socket, erase the iterator so that the new client may reclaim it.
1070          * this was probably the cause of 'server ignores me when i hammer it with reconnects'
1071          * issue in earlier alphas/betas
1072          */
1073         if (iter != Instance->clientlist->end())
1074         {
1075                 userrec* goner = iter->second;
1076                 DELETE(goner);
1077                 Instance->clientlist->erase(iter);
1078         }
1079
1080         Instance->Log(DEBUG,"AddClient: %d %d %s",socket,port,ipaddr);
1081
1082         New = new userrec(Instance);
1083         (*(Instance->clientlist))[tempnick] = New;
1084         New->fd = socket;
1085         strlcpy(New->nick,tempnick.c_str(),NICKMAX-1);
1086
1087         New->server = Instance->FindServerNamePtr(Instance->Config->ServerName);
1088         /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
1089         strcpy(New->ident, "unknown");
1090
1091         New->registered = REG_NONE;
1092         New->signon = Instance->Time() + Instance->Config->dns_timeout;
1093         New->lastping = 1;
1094
1095         New->SetSockAddr(AF_FAMILY, ipaddr, port);
1096
1097         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
1098         for (const char* temp = New->GetIPString(); *temp && j < 64; temp++, j++)
1099                 New->dhost[j] = New->host[j] = *temp;
1100         New->dhost[j] = New->host[j] = 0;
1101
1102         Instance->AddLocalClone(New);
1103         Instance->AddGlobalClone(New);
1104
1105         ConnectClass* i = New->GetClass();
1106
1107         if ((!i) || (i->GetType() == CC_DENY))
1108         {
1109                 userrec::QuitUser(Instance, New,"Unauthorised connection");
1110                 return;
1111         }
1112
1113         New->pingmax = i->GetPingTime();
1114         New->nping = Instance->Time() + i->GetPingTime() + Instance->Config->dns_timeout;
1115         New->timeout = Instance->Time() + i->GetRegTimeout();
1116         New->flood = i->GetFlood();
1117         New->threshold = i->GetThreshold();
1118         New->sendqmax = i->GetSendqMax();
1119         New->recvqmax = i->GetRecvqMax();
1120
1121         Instance->local_users.push_back(New);
1122
1123         if ((Instance->local_users.size() > Instance->Config->SoftLimit) || (Instance->local_users.size() >= MAXCLIENTS))
1124         {
1125                 Instance->WriteOpers("*** Warning: softlimit value has been reached: %d clients", Instance->Config->SoftLimit);
1126                 userrec::QuitUser(Instance, New,"No more connections allowed");
1127                 return;
1128         }
1129
1130         /*
1131          * XXX -
1132          * this is done as a safety check to keep the file descriptors within range of fd_ref_table.
1133          * its a pretty big but for the moment valid assumption:
1134          * file descriptors are handed out starting at 0, and are recycled as theyre freed.
1135          * therefore if there is ever an fd over 65535, 65536 clients must be connected to the
1136          * irc server at once (or the irc server otherwise initiating this many connections, files etc)
1137          * which for the time being is a physical impossibility (even the largest networks dont have more
1138          * than about 10,000 users on ONE server!)
1139          */
1140         if ((unsigned int)socket >= MAX_DESCRIPTORS)
1141         {
1142                 userrec::QuitUser(Instance, New, "Server is full");
1143                 return;
1144         }
1145
1146         New->exempt = (Instance->XLines->matches_exception(New) != NULL);
1147         if (!New->exempt)
1148         {
1149                 ZLine* r = Instance->XLines->matches_zline(ipaddr);
1150                 if (r)
1151                 {
1152                         char reason[MAXBUF];
1153                         snprintf(reason,MAXBUF,"Z-Lined: %s",r->reason);
1154                         userrec::QuitUser(Instance, New, reason);
1155                         return;
1156                 }
1157         }
1158
1159         if (socket > -1)
1160         {
1161                 if (!Instance->SE->AddFd(New))
1162                 {
1163                         userrec::QuitUser(Instance, New, "Internal error handling connection");
1164                         return;
1165                 }
1166         }
1167
1168         /* NOTE: even if dns lookups are *off*, we still need to display this.
1169          * BOPM and other stuff requires it.
1170          */
1171         New->WriteServ("NOTICE Auth :*** Looking up your hostname...");
1172 }
1173
1174 unsigned long userrec::GlobalCloneCount()
1175 {
1176         clonemap::iterator x = ServerInstance->global_clones.find(this->GetIPString());
1177         if (x != ServerInstance->global_clones.end())
1178                 return x->second;
1179         else
1180                 return 0;
1181 }
1182
1183 unsigned long userrec::LocalCloneCount()
1184 {
1185         clonemap::iterator x = ServerInstance->local_clones.find(this->GetIPString());
1186         if (x != ServerInstance->local_clones.end())
1187                 return x->second;
1188         else
1189                 return 0;
1190 }
1191
1192 void userrec::FullConnect(CullList* Goners)
1193 {
1194         ServerInstance->stats->statsConnects++;
1195         this->idle_lastmsg = ServerInstance->Time();
1196
1197         ConnectClass* a = this->GetClass();
1198
1199         if ((!a) || (a->GetType() == CC_DENY))
1200         {
1201                 Goners->AddItem(this,"Unauthorised connection");
1202                 return;
1203         }
1204
1205         if ((!a->GetPass().empty()) && (!this->haspassed))
1206         {
1207                 Goners->AddItem(this,"Invalid password");
1208                 return;
1209         }
1210
1211         if (this->LocalCloneCount() > a->GetMaxLocal())
1212         {
1213                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (local)");
1214                 ServerInstance->WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
1215                 return;
1216         }
1217         else if (this->GlobalCloneCount() > a->GetMaxGlobal())
1218         {
1219                 Goners->AddItem(this, "No more connections allowed from your host via this connect class (global)");
1220                 ServerInstance->WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s",a->GetMaxGlobal(), this->GetIPString());
1221                 return;
1222         }
1223
1224         if (!this->exempt)
1225         {
1226                 GLine* r = ServerInstance->XLines->matches_gline(this);
1227
1228                 if (r)
1229                 {
1230                         char reason[MAXBUF];
1231                         snprintf(reason,MAXBUF,"G-Lined: %s",r->reason);
1232                         Goners->AddItem(this, reason);
1233                         return;
1234                 }
1235
1236                 KLine* n = ServerInstance->XLines->matches_kline(this);
1237
1238                 if (n)
1239                 {
1240                         char reason[MAXBUF];
1241                         snprintf(reason,MAXBUF,"K-Lined: %s",n->reason);
1242                         Goners->AddItem(this, reason);
1243                         return;
1244                 }
1245
1246         }
1247
1248         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
1249         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
1250         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
1251         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
1252         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());
1253
1254         ServerInstance->Config->Send005(this);
1255
1256         this->ShowMOTD();
1257
1258         /* Now registered */
1259         if (ServerInstance->unregistered_count)
1260                 ServerInstance->unregistered_count--;
1261
1262         /*
1263          * fix 3 by brain, move registered = 7 below these so that spurious modes and host
1264          * changes dont go out onto the network and produce 'fake direction'.
1265          */
1266         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
1267
1268         this->registered = REG_ALL;
1269
1270         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
1271
1272         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString());
1273 }
1274
1275 /** userrec::UpdateNick()
1276  * re-allocates a nick in the user_hash after they change nicknames,
1277  * returns a pointer to the new user as it may have moved
1278  */
1279 userrec* userrec::UpdateNickHash(const char* New)
1280 {
1281         try
1282         {
1283                 //user_hash::iterator newnick;
1284                 user_hash::iterator oldnick = ServerInstance->clientlist->find(this->nick);
1285
1286                 if (!strcasecmp(this->nick,New))
1287                         return oldnick->second;
1288
1289                 if (oldnick == ServerInstance->clientlist->end())
1290                         return NULL; /* doesnt exist */
1291
1292                 userrec* olduser = oldnick->second;
1293                 (*(ServerInstance->clientlist))[New] = olduser;
1294                 ServerInstance->clientlist->erase(oldnick);
1295                 return olduser;
1296         }
1297
1298         catch (...)
1299         {
1300                 ServerInstance->Log(DEBUG,"Exception in userrec::UpdateNickHash()");
1301                 return NULL;
1302         }
1303 }
1304
1305 void userrec::InvalidateCache()
1306 {
1307         /* Invalidate cache */
1308         if (cached_fullhost)
1309                 free(cached_fullhost);
1310         if (cached_hostip)
1311                 free(cached_hostip);
1312         if (cached_makehost)
1313                 free(cached_makehost);
1314         if (cached_fullrealhost)
1315                 free(cached_fullrealhost);
1316         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
1317 }
1318
1319 bool userrec::ForceNickChange(const char* newnick)
1320 {
1321         try
1322         {
1323                 int MOD_RESULT = 0;
1324
1325                 this->InvalidateCache();
1326
1327                 FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1328
1329                 if (MOD_RESULT)
1330                 {
1331                         ServerInstance->stats->statsCollisions++;
1332                         return false;
1333                 }
1334
1335                 if (ServerInstance->XLines->matches_qline(newnick))
1336                 {
1337                         ServerInstance->stats->statsCollisions++;
1338                         return false;
1339                 }
1340
1341                 if (this->registered == REG_ALL)
1342                 {
1343                         const char* pars[1];
1344                         pars[0] = newnick;
1345                         std::string cmd = "NICK";
1346                         return (ServerInstance->Parser->CallHandler(cmd, pars, 1, this) == CMD_SUCCESS);
1347                 }
1348                 return false;
1349         }
1350
1351         catch (...)
1352         {
1353                 ServerInstance->Log(DEBUG,"Exception in userrec::ForceNickChange()");
1354                 return false;
1355         }
1356 }
1357
1358 void userrec::SetSockAddr(int protocol_family, const char* ip, int port)
1359 {
1360         switch (protocol_family)
1361         {
1362 #ifdef SUPPORT_IP6LINKS
1363                 case AF_INET6:
1364                 {
1365                         ServerInstance->Log(DEBUG,"Set inet6 protocol address");
1366                         sockaddr_in6* sin = new sockaddr_in6;
1367                         sin->sin6_family = AF_INET6;
1368                         sin->sin6_port = port;
1369                         inet_pton(AF_INET6, ip, &sin->sin6_addr);
1370                         this->ip = (sockaddr*)sin;
1371                 }
1372                 break;
1373 #endif
1374                 case AF_INET:
1375                 {
1376                         ServerInstance->Log(DEBUG,"Set inet4 protocol address");
1377                         sockaddr_in* sin = new sockaddr_in;
1378                         sin->sin_family = AF_INET;
1379                         sin->sin_port = port;
1380                         inet_pton(AF_INET, ip, &sin->sin_addr);
1381                         this->ip = (sockaddr*)sin;
1382                 }
1383                 break;
1384                 default:
1385                         ServerInstance->Log(DEBUG,"Ut oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1386                 break;
1387         }
1388 }
1389
1390 int userrec::GetPort()
1391 {
1392         if (this->ip == NULL)
1393                 return 0;
1394
1395         switch (this->GetProtocolFamily())
1396         {
1397 #ifdef SUPPORT_IP6LINKS
1398                 case AF_INET6:
1399                 {
1400                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1401                         return sin->sin6_port;
1402                 }
1403                 break;
1404 #endif
1405                 case AF_INET:
1406                 {
1407                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1408                         return sin->sin_port;
1409                 }
1410                 break;
1411                 default:
1412                 break;
1413         }
1414         return 0;
1415 }
1416
1417 int userrec::GetProtocolFamily()
1418 {
1419         if (this->ip == NULL)
1420                 return 0;
1421
1422         sockaddr_in* sin = (sockaddr_in*)this->ip;
1423         return sin->sin_family;
1424 }
1425
1426 const char* userrec::GetIPString()
1427 {
1428         static char buf[1024];
1429
1430         if (this->ip == NULL)
1431                 return "";
1432
1433         switch (this->GetProtocolFamily())
1434         {
1435 #ifdef SUPPORT_IP6LINKS
1436                 case AF_INET6:
1437                 {
1438                         static char temp[1024];
1439
1440                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1441                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1442                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1443                         if (*buf == ':')
1444                         {
1445                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1446                                 *temp = '0';
1447                                 return temp;
1448                         }
1449                         return buf;
1450                 }
1451                 break;
1452 #endif
1453                 case AF_INET:
1454                 {
1455                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1456                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1457                         return buf;
1458                 }
1459                 break;
1460                 default:
1461                 break;
1462         }
1463         return "";
1464 }
1465
1466 const char* userrec::GetIPString(char* buf)
1467 {
1468         if (this->ip == NULL)
1469         {
1470                 *buf = 0;
1471                 return buf;
1472         }
1473
1474         switch (this->GetProtocolFamily())
1475         {
1476 #ifdef SUPPORT_IP6LINKS
1477                 case AF_INET6:
1478                 {
1479                         static char temp[1024];
1480
1481                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1482                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1483                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1484                         if (*buf == ':')
1485                         {
1486                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1487                                 *temp = '0';
1488                                 strlcpy(buf, temp, sizeof(temp));
1489                         }
1490                         return buf;
1491                 }
1492                 break;
1493 #endif
1494                 case AF_INET:
1495                 {
1496                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1497                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1498                         return buf;
1499                 }
1500                 break;
1501
1502                 default:
1503                 break;
1504         }
1505         return "";
1506 }
1507
1508 /** NOTE: We cannot pass a const reference to this method.
1509  * The string is changed by the workings of the method,
1510  * so that if we pass const ref, we end up copying it to
1511  * something we can change anyway. Makes sense to just let
1512  * the compiler do that copy for us.
1513  */
1514 void userrec::Write(std::string text)
1515 {
1516         if ((this->fd < 0) || (this->fd > MAX_DESCRIPTORS))
1517                 return;
1518
1519         try
1520         {
1521                 text.append("\r\n");
1522         }
1523         catch (...)
1524         {
1525                 ServerInstance->Log(DEBUG,"Exception in userrec::Write() std::string::append");
1526                 return;
1527         }
1528
1529         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1530         {
1531                 try
1532                 {
1533                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length());
1534                 }
1535                 catch (CoreException& modexcept)
1536                 {
1537                         ServerInstance->Log(DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1538                 }
1539         }
1540         else
1541         {
1542                 this->AddWriteBuf(text);
1543         }
1544         ServerInstance->stats->statsSent += text.length();
1545         this->ServerInstance->SE->WantWrite(this);
1546 }
1547
1548 /** Write()
1549  */
1550 void userrec::Write(const char *text, ...)
1551 {
1552         va_list argsPtr;
1553         char textbuffer[MAXBUF];
1554
1555         va_start(argsPtr, text);
1556         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1557         va_end(argsPtr);
1558
1559         this->Write(std::string(textbuffer));
1560 }
1561
1562 void userrec::WriteServ(const std::string& text)
1563 {
1564         char textbuffer[MAXBUF];
1565
1566         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1567         this->Write(std::string(textbuffer));
1568 }
1569
1570 /** WriteServ()
1571  *  Same as Write(), except `text' is prefixed with `:server.name '.
1572  */
1573 void userrec::WriteServ(const char* text, ...)
1574 {
1575         va_list argsPtr;
1576         char textbuffer[MAXBUF];
1577
1578         va_start(argsPtr, text);
1579         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1580         va_end(argsPtr);
1581
1582         this->WriteServ(std::string(textbuffer));
1583 }
1584
1585
1586 void userrec::WriteFrom(userrec *user, const std::string &text)
1587 {
1588         char tb[MAXBUF];
1589
1590         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1591
1592         this->Write(std::string(tb));
1593 }
1594
1595
1596 /* write text from an originating user to originating user */
1597
1598 void userrec::WriteFrom(userrec *user, const char* text, ...)
1599 {
1600         va_list argsPtr;
1601         char textbuffer[MAXBUF];
1602
1603         va_start(argsPtr, text);
1604         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1605         va_end(argsPtr);
1606
1607         this->WriteFrom(user, std::string(textbuffer));
1608 }
1609
1610
1611 /* write text to an destination user from a source user (e.g. user privmsg) */
1612
1613 void userrec::WriteTo(userrec *dest, const char *data, ...)
1614 {
1615         char textbuffer[MAXBUF];
1616         va_list argsPtr;
1617
1618         va_start(argsPtr, data);
1619         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1620         va_end(argsPtr);
1621
1622         this->WriteTo(dest, std::string(textbuffer));
1623 }
1624
1625 void userrec::WriteTo(userrec *dest, const std::string &data)
1626 {
1627         dest->WriteFrom(this, data);
1628 }
1629
1630
1631 void userrec::WriteCommon(const char* text, ...)
1632 {
1633         char textbuffer[MAXBUF];
1634         va_list argsPtr;
1635
1636         if (this->registered != REG_ALL)
1637                 return;
1638
1639         va_start(argsPtr, text);
1640         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1641         va_end(argsPtr);
1642
1643         this->WriteCommon(std::string(textbuffer));
1644 }
1645
1646 void userrec::WriteCommon(const std::string &text)
1647 {
1648         try
1649         {
1650                 bool sent_to_at_least_one = false;
1651                 char tb[MAXBUF];
1652
1653                 if (this->registered != REG_ALL)
1654                         return;
1655
1656                 uniq_id++;
1657
1658                 /* We dont want to be doing this n times, just once */
1659                 snprintf(tb,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1660                 std::string out = tb;
1661
1662                 for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1663                 {
1664                         CUList* ulist = v->first->GetUsers();
1665                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1666                         {
1667                                 if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1668                                 {
1669                                         already_sent[i->second->fd] = uniq_id;
1670                                         i->second->Write(out);
1671                                         sent_to_at_least_one = true;
1672                                 }
1673                         }
1674                 }
1675
1676                 /*
1677                  * if the user was not in any channels, no users will receive the text. Make sure the user
1678                  * receives their OWN message for WriteCommon
1679                  */
1680                 if (!sent_to_at_least_one)
1681                 {
1682                         this->Write(std::string(tb));
1683                 }
1684         }
1685
1686         catch (...)
1687         {
1688                 ServerInstance->Log(DEBUG,"Exception in userrec::WriteCommon()");
1689         }
1690 }
1691
1692
1693 /* write a formatted string to all users who share at least one common
1694  * channel, NOT including the source user e.g. for use in QUIT
1695  */
1696
1697 void userrec::WriteCommonExcept(const char* text, ...)
1698 {
1699         char textbuffer[MAXBUF];
1700         va_list argsPtr;
1701
1702         va_start(argsPtr, text);
1703         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1704         va_end(argsPtr);
1705
1706         this->WriteCommonExcept(std::string(textbuffer));
1707 }
1708
1709 void userrec::WriteCommonExcept(const std::string &text)
1710 {
1711         bool quit_munge = false;
1712         char oper_quit[MAXBUF];
1713         char textbuffer[MAXBUF];
1714         char tb1[MAXBUF];
1715         char tb2[MAXBUF];
1716         std::string out1;
1717         std::string out2;
1718
1719         strlcpy(textbuffer, text.c_str(), MAXBUF);
1720
1721         if (this->registered != REG_ALL)
1722                 return;
1723
1724         uniq_id++;
1725
1726         snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost(),textbuffer);
1727
1728         /* TODO: We need some form of WriteCommonExcept that will send two lines, one line to
1729          * opers and the other line to non-opers, then all this hidebans and hidesplits gunk
1730          * can go byebye.
1731          */
1732         if (ServerInstance->Config->HideSplits)
1733         {
1734                 char* check = textbuffer + 6;
1735
1736                 if (!strncasecmp(textbuffer, "QUIT :",6))
1737                 {
1738                         std::stringstream split(check);
1739                         std::string server_one;
1740                         std::string server_two;
1741
1742                         split >> server_one;
1743                         split >> server_two;
1744
1745                         if ((ServerInstance->FindServerName(server_one)) && (ServerInstance->FindServerName(server_two)))
1746                         {
1747                                 strlcpy(oper_quit,textbuffer,MAXQUIT);
1748                                 strlcpy(check,"*.net *.split",MAXQUIT);
1749                                 quit_munge = true;
1750                                 snprintf(tb2,MAXBUF,":%s %s",this->GetFullHost(),oper_quit);
1751                                 out2 = tb2;
1752                         }
1753                 }
1754         }
1755
1756         if ((ServerInstance->Config->HideBans) && (!quit_munge))
1757         {
1758                 if ((!strncasecmp(textbuffer, "QUIT :G-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :K-Lined:",14))
1759                 || (!strncasecmp(textbuffer, "QUIT :Q-Lined:",14)) || (!strncasecmp(textbuffer, "QUIT :Z-Lined:",14)))
1760                 {
1761                         char* check = textbuffer + 13;
1762                         strlcpy(oper_quit,textbuffer,MAXQUIT);
1763                         *check = 0;  // We don't need to strlcpy, we just chop it from the :
1764                         quit_munge = true;
1765                         snprintf(tb2,MAXBUF,":%s %s",this->GetFullHost(),oper_quit);
1766                         out2 = tb2;
1767                 }
1768         }
1769
1770         out1 = tb1;
1771
1772         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1773         {
1774                 CUList *ulist = v->first->GetUsers();
1775                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1776                 {
1777                         if (this != i->second)
1778                         {
1779                                 if ((IS_LOCAL(i->second)) && (already_sent[i->second->fd] != uniq_id))
1780                                 {
1781                                         already_sent[i->second->fd] = uniq_id;
1782                                         if (quit_munge)
1783                                                 i->second->Write(*i->second->oper ? out2 : out1);
1784                                         else
1785                                                 i->second->Write(out1);
1786                                 }
1787                         }
1788                 }
1789         }
1790
1791 }
1792
1793 void userrec::WriteWallOps(const std::string &text)
1794 {
1795         /* Does nothing if theyre not opered */
1796         if ((!*this->oper) && (IS_LOCAL(this)))
1797                 return;
1798
1799         std::string wallop = "WALLOPS :";
1800
1801         try
1802         {
1803                 wallop.append(text);
1804         }
1805         catch (...)
1806         {
1807                 ServerInstance->Log(DEBUG,"Exception in userrec::Write() std::string::append");
1808                 return;
1809         }
1810
1811         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1812         {
1813                 userrec* t = *i;
1814                 if ((IS_LOCAL(t)) && (t->modes[UM_WALLOPS]))
1815                         this->WriteTo(t,wallop);
1816         }
1817 }
1818
1819 void userrec::WriteWallOps(const char* text, ...)
1820 {
1821         char textbuffer[MAXBUF];
1822         va_list argsPtr;
1823
1824         va_start(argsPtr, text);
1825         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1826         va_end(argsPtr);
1827
1828         this->WriteWallOps(std::string(textbuffer));
1829 }
1830
1831 /* return 0 or 1 depending if users u and u2 share one or more common channels
1832  * (used by QUIT, NICK etc which arent channel specific notices)
1833  *
1834  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1835  * the first users channels then the second users channels within the outer loop,
1836  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1837  * all possible iterations). However this new function instead checks against the
1838  * channel's userlist in the inner loop which is a std::map<userrec*,userrec*>
1839  * and saves us time as we already know what pointer value we are after.
1840  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1841  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1842  */
1843 bool userrec::SharesChannelWith(userrec *other)
1844 {
1845         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1846                 return false;
1847
1848         /* Outer loop */
1849         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1850         {
1851                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1852                  * by replacing it with a map::find which *should* be more efficient
1853                  */
1854                 if (i->first->HasUser(other))
1855                         return true;
1856         }
1857         return false;
1858 }
1859
1860 bool userrec::ChangeName(const char* gecos)
1861 {
1862         if (!strcmp(gecos, this->fullname))
1863                 return true;
1864
1865         if (IS_LOCAL(this))
1866         {
1867                 int MOD_RESULT = 0;
1868                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1869                 if (MOD_RESULT)
1870                         return false;
1871                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1872         }
1873         strlcpy(this->fullname,gecos,MAXGECOS+1);
1874
1875         return true;
1876 }
1877
1878 bool userrec::ChangeDisplayedHost(const char* host)
1879 {
1880         if (!strcmp(host, this->dhost))
1881                 return true;
1882
1883         if (IS_LOCAL(this))
1884         {
1885                 int MOD_RESULT = 0;
1886                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host));
1887                 if (MOD_RESULT)
1888                         return false;
1889                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host));
1890         }
1891         if (this->ServerInstance->Config->CycleHosts)
1892                 this->WriteCommonExcept("QUIT :Changing hosts");
1893
1894         /* Fix by Om: userrec::dhost is 65 long, this was truncating some long hosts */
1895         strlcpy(this->dhost,host,64);
1896
1897         this->InvalidateCache();
1898
1899         if (this->ServerInstance->Config->CycleHosts)
1900         {
1901                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1902                 {
1903                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1904                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1905                         if (n.length() > 0)
1906                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1907                 }
1908         }
1909
1910         if (IS_LOCAL(this))
1911                 this->WriteServ("396 %s %s :is now your hidden host",this->nick,this->dhost);
1912
1913         return true;
1914 }
1915
1916 bool userrec::ChangeIdent(const char* newident)
1917 {
1918         if (!strcmp(newident, this->ident))
1919                 return true;
1920
1921         if (this->ServerInstance->Config->CycleHosts)
1922                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1923
1924         strlcpy(this->ident, newident, IDENTMAX+2);
1925
1926         this->InvalidateCache();
1927
1928         if (this->ServerInstance->Config->CycleHosts)
1929         {
1930                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1931                 {
1932                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1933                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1934                         if (n.length() > 0)
1935                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1936                 }
1937         }
1938
1939         return true;
1940 }
1941
1942 void userrec::NoticeAll(char* text, ...)
1943 {
1944         char textbuffer[MAXBUF];
1945         char formatbuffer[MAXBUF];
1946         va_list argsPtr;
1947
1948         va_start(argsPtr, text);
1949         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1950         va_end(argsPtr);
1951
1952         snprintf(formatbuffer,MAXBUF,":%s NOTICE $* :%s", this->GetFullHost(), textbuffer);
1953         std::string fmt = formatbuffer;
1954
1955         for (std::vector<userrec*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1956         {
1957                 (*i)->Write(fmt);
1958         }
1959 }
1960
1961
1962 std::string userrec::ChannelList(userrec* source)
1963 {
1964         try
1965         {
1966                 std::string list;
1967                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1968                 {
1969                         /* If the target is the same as the sender, let them see all their channels.
1970                          * If the channel is NOT private/secret OR the user shares a common channel
1971                          * If the user is an oper, and the <options:operspywhois> option is set.
1972                          */
1973                         if ((source == this) || (*source->oper && ServerInstance->Config->OperSpyWhois) || (((!i->first->modes[CM_PRIVATE]) && (!i->first->modes[CM_SECRET])) || (i->first->HasUser(source))))
1974                         {
1975                                 list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" ");
1976                         }
1977                 }
1978                 return list;
1979         }
1980         catch (...)
1981         {
1982                 ServerInstance->Log(DEBUG,"Exception in userrec::ChannelList()");
1983                 return "";
1984         }
1985 }
1986
1987 void userrec::SplitChanList(userrec* dest, const std::string &cl)
1988 {
1989         std::string line;
1990         std::ostringstream prefix;
1991         std::string::size_type start, pos, length;
1992
1993         try
1994         {
1995                 prefix << this->nick << " " << dest->nick << " :";
1996                 line = prefix.str();
1997                 int namelen = strlen(ServerInstance->Config->ServerName) + 6;
1998
1999                 for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
2000                 {
2001                         length = (pos == std::string::npos) ? cl.length() : pos;
2002
2003                         if (line.length() + namelen + length - start > 510)
2004                         {
2005                                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
2006                                 line = prefix.str();
2007                         }
2008
2009                         if(pos == std::string::npos)
2010                         {
2011                                 line.append(cl.substr(start, length - start));
2012                                 break;
2013                         }
2014                         else
2015                         {
2016                                 line.append(cl.substr(start, length - start + 1));
2017                         }
2018                 }
2019
2020                 if (line.length())
2021                 {
2022                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
2023                 }
2024         }
2025
2026         catch (...)
2027         {
2028                 ServerInstance->Log(DEBUG,"Exception in userrec::SplitChanList()");
2029         }
2030 }
2031
2032
2033 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
2034  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
2035  * then their ip will be taken as 'priority' anyway, so for example,
2036  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
2037  */
2038 ConnectClass* userrec::GetClass()
2039 {
2040         for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
2041         {
2042                 if ((match(this->GetIPString(),i->GetHost().c_str(),true)) || (match(this->host,i->GetHost().c_str())))
2043                         return &(*i);
2044         }
2045         return NULL;
2046 }
2047
2048 void userrec::PurgeEmptyChannels()
2049 {
2050         std::vector<chanrec*> to_delete;
2051
2052         // firstly decrement the count on each channel
2053         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
2054         {
2055                 f->first->RemoveAllPrefixes(this);
2056                 if (f->first->DelUser(this) == 0)
2057                 {
2058                         /* No users left in here, mark it for deletion */
2059                         try
2060                         {
2061                                 to_delete.push_back(f->first);
2062                         }
2063                         catch (...)
2064                         {
2065                                 ServerInstance->Log(DEBUG,"Exception in userrec::PurgeEmptyChannels to_delete.push_back()");
2066                         }
2067                 }
2068         }
2069
2070         for (std::vector<chanrec*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
2071         {
2072                 chanrec* thischan = *n;
2073                 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
2074                 if (i2 != ServerInstance->chanlist->end())
2075                 {
2076                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
2077                         DELETE(i2->second);
2078                         ServerInstance->chanlist->erase(i2);
2079                         this->chans.erase(*n);
2080                 }
2081         }
2082
2083         this->UnOper();
2084 }
2085
2086 void userrec::ShowMOTD()
2087 {
2088         if (!ServerInstance->Config->MOTD.size())
2089         {
2090                 this->WriteServ("422 %s :Message of the day file is missing.",this->nick);
2091                 return;
2092         }
2093         this->WriteServ("375 %s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
2094
2095         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
2096                 this->WriteServ("372 %s :- %s",this->nick,i->c_str());
2097
2098         this->WriteServ("376 %s :End of message of the day.", this->nick);
2099 }
2100
2101 void userrec::ShowRULES()
2102 {
2103         if (!ServerInstance->Config->RULES.size())
2104         {
2105                 this->WriteServ("NOTICE %s :Rules file is missing.",this->nick);
2106                 return;
2107         }
2108         this->WriteServ("NOTICE %s :%s rules",this->nick,ServerInstance->Config->ServerName);
2109
2110         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
2111                 this->WriteServ("NOTICE %s :%s",this->nick,i->c_str());
2112
2113         this->WriteServ("NOTICE %s :End of %s rules.",this->nick,ServerInstance->Config->ServerName);
2114 }
2115
2116 void userrec::HandleEvent(EventType et, int errornum)
2117 {
2118         /* WARNING: May delete this user! */
2119         int thisfd = this->GetFd();
2120
2121         try
2122         {
2123                 switch (et)
2124                 {
2125                         case EVENT_READ:
2126                                 ServerInstance->ProcessUser(this);
2127                         break;
2128                         case EVENT_WRITE:
2129                                 this->FlushWriteBuf();
2130                         break;
2131                         case EVENT_ERROR:
2132                                 /** This should be safe, but dont DARE do anything after it -- Brain */
2133                                 this->SetWriteError(errornum ? strerror(errornum) : "EOF from client");
2134                         break;
2135                 }
2136         }
2137         catch (...)
2138         {
2139                 ServerInstance->Log(DEBUG,"Exception in userrec::HandleEvent intercepted");
2140         }
2141
2142         /* If the user has raised an error whilst being processed, quit them now we're safe to */
2143         if ((ServerInstance->SE->GetRef(thisfd) == this))
2144         {
2145                 if (!WriteError.empty())
2146                 {
2147                         userrec::QuitUser(ServerInstance, this, GetWriteError());
2148                 }
2149         }
2150 }
2151