src/users.cpp

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