src/inspircd.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  Inspire is copyright (C) 2002-2005 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 /* Now with added unF! ;) */
  18
  19 using namespace std;
  20
  21 #include "inspircd_config.h"
  22 #include "inspircd.h"
  23 #include "inspircd_io.h"
  24 #include <unistd.h>
  25 #include <fcntl.h>
  26 #include <sys/errno.h>
  27 #include <sys/ioctl.h>
  28 #include <sys/utsname.h>
  29 #include <time.h>
  30 #include <string>
  31 #ifdef GCC3
  32 #include <ext/hash_map>
  33 #else
  34 #include <hash_map>
  35 #endif
  36 #include <map>
  37 #include <sstream>
  38 #include <vector>
  39 #include <deque>
  40 #ifdef THREADED_DNS
  41 #include <pthread.h>
  42 #endif
  43 #include "users.h"
  44 #include "ctables.h"
  45 #include "globals.h"
  46 #include "modules.h"
  47 #include "dynamic.h"
  48 #include "wildcard.h"
  49 #include "message.h"
  50 #include "mode.h"
  51 #include "commands.h"
  52 #include "xline.h"
  53 #include "inspstring.h"
  54 #include "dnsqueue.h"
  55 #include "helperfuncs.h"
  56 #include "hashcomp.h"
  57 #include "socketengine.h"
  58 #include "userprocess.h"
  59 #include "socket.h"
  60 #include "typedefs.h"
  61 #include "command_parse.h"
  62
  63 InspIRCd* ServerInstance;
  64
  65 int WHOWAS_STALE = 48; // default WHOWAS Entries last 2 days before they go 'stale'
  66 int WHOWAS_MAX = 100;  // default 100 people maximum in the WHOWAS list
  67
  68 extern std::vector<Module*> modules;
  69 extern std::vector<ircd_module*> factory;
  70
  71 std::vector<InspSocket*> module_sockets;
  72 std::vector<userrec*> local_users;
  73
  74 extern int MODCOUNT;
  75 int openSockfd[MAXSOCKS];
  76 sockaddr_in client,server;
  77 socklen_t length;
  78
  79 extern InspSocket* socket_ref[MAX_DESCRIPTORS];
  80
  81 time_t TIME = time(NULL), OLDTIME = time(NULL);
  82
  83 // This table references users by file descriptor.
  84 // its an array to make it VERY fast, as all lookups are referenced
  85 // by an integer, meaning there is no need for a scan/search operation.
  86 userrec* fd_ref_table[65536];
  87
  88 Server* MyServer = new Server;
  89 ServerConfig *Config = new ServerConfig;
  90
  91 user_hash clientlist;
  92 chan_hash chanlist;
  93 whowas_hash whowas;
  94 servernamelist servernames;
  95 char lowermap[255];
  96
  97 void AddServerName(std::string servername)
  98 {
  99         log(DEBUG,"Adding server name: %s",servername.c_str());
 100         for (servernamelist::iterator a = servernames.begin(); a < servernames.end(); a++)
 101         {
 102                 if (*a == servername)
 103                         return;
 104         }
 105         servernames.push_back(servername);
 106 }
 107
 108 const char* FindServerNamePtr(std::string servername)
 109 {
 110         for (servernamelist::iterator a = servernames.begin(); a < servernames.end(); a++)
 111         {
 112                 if (*a == servername)
 113                         return a->c_str();
 114         }
 115         AddServerName(servername);
 116         return FindServerNamePtr(servername);
 117 }
 118
 119 std::string InspIRCd::GetRevision()
 120 {
 121         /* w00t got me to replace a bunch of strtok_r
 122          * with something nicer, so i did this. Its the
 123          * same thing really, only in C++. It places the
 124          * text into a std::stringstream which is a readable
 125          * and writeable buffer stream, and then pops two
 126          * words off it, space delimited. Because it reads
 127          * into the same variable twice, the first word
 128          * is discarded, and the second one returned.
 129          */
 130         std::stringstream Revision("$Revision$");
 131         std::string single;
 132         Revision >> single >> single;
 133         return single;
 134 }
 135
 136 void InspIRCd::MakeLowerMap()
 137 {
 138         // initialize the lowercase mapping table
 139         for (unsigned int cn = 0; cn < 256; cn++)
 140                 lowermap[cn] = cn;
 141         // lowercase the uppercase chars
 142         for (unsigned int cn = 65; cn < 91; cn++)
 143                 lowermap[cn] = tolower(cn);
 144         // now replace the specific chars for scandanavian comparison
 145         lowermap[(unsigned)'['] = '{';
 146         lowermap[(unsigned)']'] = '}';
 147         lowermap[(unsigned)'\\'] = '|';
 148 }
 149
 150 InspIRCd::InspIRCd(int argc, char** argv)
 151 {
 152         Start();
 153         module_sockets.clear();
 154         this->startup_time = time(NULL);
 155         srand(time(NULL));
 156         log(DEBUG,"*** InspIRCd starting up!");
 157         if (!FileExists(CONFIG_FILE))
 158         {
 159                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
 160                 log(DEFAULT,"main: no config");
 161                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
 162                 Exit(ERROR);
 163         }
 164         if (argc > 1) {
 165                 for (int i = 1; i < argc; i++)
 166                 {
 167                         if (!strcmp(argv[i],"-nofork")) {
 168                                 Config->nofork = true;
 169                         }
 170                         if (!strcmp(argv[i],"-wait")) {
 171                                 sleep(6);
 172                         }
 173                         if (!strcmp(argv[i],"-nolimit")) {
 174                                 Config->unlimitcore = true;
 175                         }
 176                 }
 177         }
 178
 179         strlcpy(Config->MyExecutable,argv[0],MAXBUF);
 180
 181         this->MakeLowerMap();
 182
 183         OpenLog(argv, argc);
 184         Config->ClearStack();
 185         Config->Read(true,NULL);
 186         CheckRoot();
 187         this->ModeGrok = new ModeParser();
 188         this->Parser = new CommandParser();
 189         this->stats = new serverstats();
 190         AddServerName(Config->ServerName);
 191         CheckDie();
 192         stats->BoundPortCount = BindPorts();
 193
 194         for(int t = 0; t < 255; t++)
 195                 Config->global_implementation[t] = 0;
 196
 197         memset(&Config->implement_lists,0,sizeof(Config->implement_lists));
 198
 199         printf("\n");
 200         SetSignals();
 201         if (!Config->nofork)
 202         {
 203                 if (DaemonSeed() == ERROR)
 204                 {
 205                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 206                         Exit(ERROR);
 207                 }
 208         }
 209
 210         /* Because of limitations in kqueue on freebsd, we must fork BEFORE we
 211          * initialize the socket engine.
 212          */
 213         SE = new SocketEngine();
 214
 215         /* We must load the modules AFTER initializing the socket engine, now */
 216
 217         return;
 218 }
 219
 220 std::string InspIRCd::GetVersionString()
 221 {
 222         char versiondata[MAXBUF];
 223 #ifdef THREADED_DNS
 224         char dnsengine[] = "multithread";
 225 #else
 226         char dnsengine[] = "singlethread";
 227 #endif
 228         snprintf(versiondata,MAXBUF,"%s Rev. %s %s :%s [FLAGS=%lu,%s,%s]",VERSION,GetRevision().c_str(),Config->ServerName,SYSTEM,(unsigned long)OPTIMISATION,SE->GetName().c_str(),dnsengine);
 229         return versiondata;
 230 }
 231
 232 char* InspIRCd::ModuleError()
 233 {
 234         return MODERR;
 235 }
 236
 237 void InspIRCd::erase_factory(int j)
 238 {
 239         int v = 0;
 240         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
 241         {
 242                 if (v == j)
 243                 {
 244                         factory.erase(t);
 245                         factory.push_back(NULL);
 246                         return;
 247                 }
 248                 v++;
 249         }
 250 }
 251
 252 void InspIRCd::erase_module(int j)
 253 {
 254         int v1 = 0;
 255         for (std::vector<Module*>::iterator m = modules.begin(); m!= modules.end(); m++)
 256         {
 257                 if (v1 == j)
 258                 {
 259                         delete *m;
 260                         modules.erase(m);
 261                         modules.push_back(NULL);
 262                         break;
 263                 }
 264                 v1++;
 265         }
 266         int v2 = 0;
 267         for (std::vector<std::string>::iterator v = Config->module_names.begin(); v != Config->module_names.end(); v++)
 268         {
 269                 if (v2 == j)
 270                 {
 271                        Config->module_names.erase(v);
 272                        break;
 273                 }
 274                 v2++;
 275         }
 276
 277 }
 278
 279 void InspIRCd::MoveTo(std::string modulename,int slot)
 280 {
 281         unsigned int v2 = 256;
 282         log(DEBUG,"Moving %s to slot %d",modulename.c_str(),slot);
 283         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 284         {
 285                 if (Config->module_names[v] == modulename)
 286                 {
 287                         // found an instance, swap it with the item at MODCOUNT
 288                         v2 = v;
 289                         break;
 290                 }
 291         }
 292         if (v2 == (unsigned int)slot)
 293         {
 294                 log(DEBUG,"Item %s already in slot %d!",modulename.c_str(),slot);
 295         }
 296         else if (v2 < 256)
 297         {
 298                 // Swap the module names over
 299                 Config->module_names[v2] = Config->module_names[slot];
 300                 Config->module_names[slot] = modulename;
 301                 // now swap the module factories
 302                 ircd_module* temp = factory[v2];
 303                 factory[v2] = factory[slot];
 304                 factory[slot] = temp;
 305                 // now swap the module objects
 306                 Module* temp_module = modules[v2];
 307                 modules[v2] = modules[slot];
 308                 modules[slot] = temp_module;
 309                 // now swap the implement lists (we dont
 310                 // need to swap the global or recount it)
 311                 for (int n = 0; n < 255; n++)
 312                 {
 313                         char x = Config->implement_lists[v2][n];
 314                         Config->implement_lists[v2][n] = Config->implement_lists[slot][n];
 315                         Config->implement_lists[slot][n] = x;
 316                 }
 317                 log(DEBUG,"Moved %s to slot successfully",modulename.c_str());
 318         }
 319         else
 320         {
 321                 log(DEBUG,"Move of %s to slot failed!",modulename.c_str());
 322         }
 323 }
 324
 325 void InspIRCd::MoveToFirst(std::string modulename)
 326 {
 327         MoveTo(modulename,0);
 328 }
 329
 330 void InspIRCd::MoveToLast(std::string modulename)
 331 {
 332         MoveTo(modulename,MODCOUNT);
 333 }
 334
 335 void InspIRCd::BuildISupport()
 336 {
 337         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
 338         std::stringstream v;
 339         v << "WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS << " MAXBANS=60 NICKLEN=" << NICKMAX;
 340         v << " CASEMAPPING=rfc1459 STATUSMSG=@+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=20 AWAYLEN=";
 341         v << MAXAWAY << " CHANMODES=ohvb,k,l,psmnti NETWORK=" << Config->Network;
 342         Config->data005 = v.str();
 343         FOREACH_MOD(I_On005Numeric,On005Numeric(Config->data005));
 344 }
 345
 346 bool InspIRCd::UnloadModule(const char* filename)
 347 {
 348         std::string filename_str = filename;
 349         for (unsigned int j = 0; j != Config->module_names.size(); j++)
 350         {
 351                 if (Config->module_names[j] == filename_str)
 352                 {
 353                         if (modules[j]->GetVersion().Flags & VF_STATIC)
 354                         {
 355                                 log(DEFAULT,"Failed to unload STATIC module %s",filename);
 356                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
 357                                 return false;
 358                         }
 359                         /* Give the module a chance to tidy out all its metadata */
 360                         for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
 361                         {
 362                                 modules[j]->OnCleanup(TYPE_CHANNEL,c->second);
 363                         }
 364                         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 365                         {
 366                                 modules[j]->OnCleanup(TYPE_USER,u->second);
 367                         }
 368
 369                         for(int t = 0; t < 255; t++)
 370                         {
 371                                 Config->global_implementation[t] -= Config->implement_lists[j][t];
 372                         }
 373
 374                         /* We have to renumber implement_lists after unload because the module numbers change!
 375                          */
 376                         for(int j2 = j; j2 < 254; j2++)
 377                         {
 378                                 for(int t = 0; t < 255; t++)
 379                                 {
 380                                         Config->implement_lists[j2][t] = Config->implement_lists[j2+1][t];
 381                                 }
 382                         }
 383
 384                         FOREACH_MOD(I_OnUnloadModule,OnUnloadModule(modules[j],Config->module_names[j]));
 385                         // found the module
 386                         log(DEBUG,"Deleting module...");
 387                         erase_module(j);
 388                         log(DEBUG,"Erasing module entry...");
 389                         erase_factory(j);
 390                         log(DEBUG,"Removing dependent commands...");
 391                         Parser->RemoveCommands(filename);
 392                         log(DEFAULT,"Module %s unloaded",filename);
 393                         MODCOUNT--;
 394                         BuildISupport();
 395                         return true;
 396                 }
 397         }
 398         log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
 399         snprintf(MODERR,MAXBUF,"Module not loaded");
 400         return false;
 401 }
 402
 403 bool InspIRCd::LoadModule(const char* filename)
 404 {
 405         char modfile[MAXBUF];
 406 #ifdef STATIC_LINK
 407         strlcpy(modfile,filename,MAXBUF);
 408 #else
 409         snprintf(modfile,MAXBUF,"%s/%s",Config->ModPath,filename);
 410 #endif
 411         std::string filename_str = filename;
 412 #ifndef STATIC_LINK
 413         if (!DirValid(modfile))
 414         {
 415                 log(DEFAULT,"Module %s is not within the modules directory.",modfile);
 416                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
 417                 return false;
 418         }
 419 #endif
 420         log(DEBUG,"Loading module: %s",modfile);
 421 #ifndef STATIC_LINK
 422         if (FileExists(modfile))
 423         {
 424 #endif
 425                 for (unsigned int j = 0; j < Config->module_names.size(); j++)
 426                 {
 427                         if (Config->module_names[j] == filename_str)
 428                         {
 429                                 log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
 430                                 snprintf(MODERR,MAXBUF,"Module already loaded");
 431                                 return false;
 432                         }
 433                 }
 434                 ircd_module* a = new ircd_module(modfile);
 435                 factory[MODCOUNT+1] = a;
 436                 if (factory[MODCOUNT+1]->LastError())
 437                 {
 438                         log(DEFAULT,"Unable to load %s: %s",modfile,factory[MODCOUNT+1]->LastError());
 439                         snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[MODCOUNT+1]->LastError());
 440                         MODCOUNT--;
 441                         return false;
 442                 }
 443                 if (factory[MODCOUNT+1]->factory)
 444                 {
 445                         Module* m = factory[MODCOUNT+1]->factory->CreateModule(MyServer);
 446                         modules[MODCOUNT+1] = m;
 447                         /* save the module and the module's classfactory, if
 448                          * this isnt done, random crashes can occur :/ */
 449                         Config->module_names.push_back(filename);
 450
 451                         char* x = &Config->implement_lists[MODCOUNT+1][0];
 452                         for(int t = 0; t < 255; t++)
 453                                 x[t] = 0;
 454
 455                         modules[MODCOUNT+1]->Implements(x);
 456
 457                         for(int t = 0; t < 255; t++)
 458                         {
 459                                 Config->global_implementation[t] += Config->implement_lists[MODCOUNT+1][t];
 460                                 if (Config->implement_lists[MODCOUNT+1][t])
 461                                 {
 462                                         log(DEBUG,"Add global implementation: %d %d => %d",MODCOUNT+1,t,Config->global_implementation[t]);
 463                                 }
 464                         }
 465                 }
 466                 else
 467                 {
 468                         log(DEFAULT,"Unable to load %s",modfile);
 469                         snprintf(MODERR,MAXBUF,"Factory function failed!");
 470                         return false;
 471                 }
 472 #ifndef STATIC_LINK
 473         }
 474         else
 475         {
 476                 log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
 477                 snprintf(MODERR,MAXBUF,"Module file could not be found");
 478                 return false;
 479         }
 480 #endif
 481         MODCOUNT++;
 482         FOREACH_MOD(I_OnLoadModule,OnLoadModule(modules[MODCOUNT],filename_str));
 483         // now work out which modules, if any, want to move to the back of the queue,
 484         // and if they do, move them there.
 485         std::vector<std::string> put_to_back;
 486         std::vector<std::string> put_to_front;
 487         for (unsigned int j = 0; j < Config->module_names.size(); j++)
 488         {
 489                 if (modules[j]->Prioritize() == PRIORITY_LAST)
 490                 {
 491                         put_to_back.push_back(Config->module_names[j]);
 492                 }
 493                 else if (modules[j]->Prioritize() == PRIORITY_FIRST)
 494                 {
 495                         put_to_front.push_back(Config->module_names[j]);
 496                 }
 497         }
 498         for (unsigned int j = 0; j < put_to_back.size(); j++)
 499         {
 500                 MoveToLast(put_to_back[j]);
 501         }
 502         for (unsigned int j = 0; j < put_to_front.size(); j++)
 503         {
 504                 MoveToFirst(put_to_front[j]);
 505         }
 506         BuildISupport();
 507         return true;
 508 }
 509
 510 int InspIRCd::Run()
 511 {
 512         bool expire_run = false;
 513         int activefds[MAX_DESCRIPTORS];
 514         int incomingSockfd;
 515         int in_port;
 516         userrec* cu = NULL;
 517         InspSocket* s = NULL;
 518         InspSocket* s_del = NULL;
 519         char* target;
 520         unsigned int numberactive;
 521         sockaddr_in sock_us;     // our port number
 522         socklen_t uslen;         // length of our port number
 523
 524         /* Until THIS point, ServerInstance == NULL */
 525
 526         LoadAllModules(this);
 527
 528         printf("\nInspIRCd is now running!\n");
 529
 530         if (!Config->nofork)
 531         {
 532                 freopen("/dev/null","w",stdout);
 533                 freopen("/dev/null","w",stderr);
 534         }
 535
 536         /* Add the listening sockets used for client inbound connections
 537          * to the socket engine
 538          */
 539         for (int count = 0; count < stats->BoundPortCount; count++)
 540                 SE->AddFd(openSockfd[count],true,X_LISTEN);
 541
 542         WritePID(Config->PID);
 543
 544         /* main loop, this never returns */
 545         for (;;)
 546         {
 547                 /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
 548                  * Once per loop iteration is pleanty.
 549                  */
 550                 OLDTIME = TIME;
 551                 TIME = time(NULL);
 552
 553                 /* Run background module timers every few seconds
 554                  * (the docs say modules shouldnt rely on accurate
 555                  * timing using this event, so we dont have to
 556                  * time this exactly).
 557                  */
 558                 if (((TIME % 8) == 0) && (!expire_run))
 559                 {
 560                         expire_lines();
 561                         FOREACH_MOD(I_OnBackgroundTimer,OnBackgroundTimer(TIME));
 562                         expire_run = true;
 563                         continue;
 564                 }
 565                 else if ((TIME % 8) == 1)
 566                 {
 567                         expire_run = false;
 568                 }
 569
 570                 /* Once a second, do the background processing */
 571                 if (TIME != OLDTIME)
 572                         DoBackgroundUserStuff(TIME);
 573
 574                 /* Call the socket engine to wait on the active
 575                  * file descriptors. The socket engine has everything's
 576                  * descriptors in its list... dns, modules, users,
 577                  * servers... so its nice and easy, just one call.
 578                  */
 579                 if (!(numberactive = SE->Wait(activefds)))
 580                         continue;
 581
 582                 /**
 583                  * Now process each of the fd's. For users, we have a fast
 584                  * lookup table which can find a user by file descriptor, so
 585                  * processing them by fd isnt expensive. If we have a lot of
 586                  * listening ports or module sockets though, things could get
 587                  * ugly.
 588                  */
 589                 for (unsigned int activefd = 0; activefd < numberactive; activefd++)
 590                 {
 591                         int socket_type = SE->GetType(activefds[activefd]);
 592                         switch (socket_type)
 593                         {
 594                                 case X_ESTAB_CLIENT:
 595
 596                                         cu = fd_ref_table[activefds[activefd]];
 597                                         if (cu)
 598                                                 ProcessUser(cu);
 599
 600                                 break;
 601
 602                                 case X_ESTAB_MODULE:
 603
 604                                         /* Process module-owned sockets.
 605                                          * Modules are encouraged to inherit their sockets from
 606                                          * InspSocket so we can process them neatly like this.
 607                                          */
 608                                         s = socket_ref[activefds[activefd]];
 609
 610                                         if ((s) && (!s->Poll()))
 611                                         {
 612                                                 log(DEBUG,"Socket poll returned false, close and bail");
 613                                                 SE->DelFd(s->GetFd());
 614                                                 for (std::vector<InspSocket*>::iterator a = module_sockets.begin(); a < module_sockets.end(); a++)
 615                                                 {
 616                                                         s_del = (InspSocket*)*a;
 617                                                         if ((s_del) && (s_del->GetFd() == activefds[activefd]))
 618                                                         {
 619                                                                 module_sockets.erase(a);
 620                                                                 break;
 621                                                         }
 622                                                 }
 623                                                 s->Close();
 624                                                 delete s;
 625                                         }
 626
 627                                 break;
 628
 629                                 case X_ESTAB_DNS:
 630
 631                                         /* When we are using single-threaded dns,
 632                                          * the sockets for dns end up in our mainloop.
 633                                          * When we are using multi-threaded dns,
 634                                          * each thread has its own basic poll() loop
 635                                          * within it, making them 'fire and forget'
 636                                          * and independent of the mainloop.
 637                                          */
 638 #ifndef THREADED_DNS
 639                                         dns_poll(activefds[activefd]);
 640 #endif
 641                                 break;
 642
 643                                 case X_LISTEN:
 644
 645                                         /* It's a listener */
 646                                         uslen = sizeof(sock_us);
 647                                         length = sizeof(client);
 648                                         incomingSockfd = accept (activefds[activefd],(struct sockaddr*)&client,&length);
 649                                         if (!getsockname(incomingSockfd,(sockaddr*)&sock_us,&uslen))
 650                                         {
 651                                                 in_port = ntohs(sock_us.sin_port);
 652                                                 log(DEBUG,"Accepted socket %d",incomingSockfd);
 653                                                 target = (char*)inet_ntoa(client.sin_addr);
 654                                                 /* Years and years ago, we used to resolve here
 655                                                  * using gethostbyaddr(). That is sucky and we
 656                                                  * don't do that any more...
 657                                                  */
 658                                                 if (incomingSockfd >= 0)
 659                                                 {
 660                                                         NonBlocking(incomingSockfd);
 661                                                         if (Config->GetIOHook(in_port))
 662                                                         {
 663                                                                 Config->GetIOHook(in_port)->OnRawSocketAccept(incomingSockfd, target, in_port);
 664                                                         }
 665                                                         stats->statsAccept++;
 666                                                         AddClient(incomingSockfd, target, in_port, false, target);
 667                                                         log(DEBUG,"Adding client on port %lu fd=%lu",(unsigned long)in_port,(unsigned long)incomingSockfd);
 668                                                 }
 669                                                 else
 670                                                 {
 671                                                         WriteOpers("*** WARNING: accept() failed on port %lu (%s)",(unsigned long)in_port,target);
 672                                                         log(DEBUG,"accept failed: %lu",(unsigned long)in_port);
 673                                                         stats->statsRefused++;
 674                                                 }
 675                                         }
 676                                         else
 677                                         {
 678                                                 log(DEBUG,"Couldnt look up the port number for fd %lu (OS BROKEN?!)",incomingSockfd);
 679                                                 shutdown(incomingSockfd,2);
 680                                                 close(incomingSockfd);
 681                                         }
 682                                 break;
 683
 684                                 default:
 685                                         /* Something went wrong if we're in here.
 686                                          * In fact, so wrong, im not quite sure
 687                                          * what we would do, so for now, its going
 688                                          * to safely do bugger all.
 689                                          */
 690                                 break;
 691                         }
 692                 }
 693
 694         }
 695         /* This is never reached -- we hope! */
 696         return 0;
 697 }
 698
 699 /**********************************************************************************/
 700
 701 /**
 702  * An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*.
 703  */
 704
 705 int main(int argc, char** argv)
 706 {
 707         ServerInstance = new InspIRCd(argc, argv);
 708         ServerInstance->Run();
 709         delete ServerInstance;
 710         return 0;
 711 }
 712