src/inspircd.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2008 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 /* $Install: src/inspircd $(BINPATH) */
  15
  16
  17 #include "inspircd.h"
  18 #include <signal.h>
  19
  20 #ifndef WIN32
  21         #include <dirent.h>
  22         #include <unistd.h>
  23         #include <sys/resource.h>
  24         #include <dlfcn.h>
  25         #include <getopt.h>
  26
  27         /* Some systems don't define RUSAGE_SELF. This should fix them. */
  28         #ifndef RUSAGE_SELF
  29                 #define RUSAGE_SELF 0
  30         #endif
  31 #endif
  32
  33 #include <fstream>
  34 #include "xline.h"
  35 #include "bancache.h"
  36 #include "socketengine.h"
  37 #include "inspircd_se_config.h"
  38 #include "socket.h"
  39 #include "command_parse.h"
  40 #include "exitcodes.h"
  41 #include "caller.h"
  42 #include "testsuite.h"
  43
  44 using irc::sockets::insp_ntoa;
  45 using irc::sockets::insp_inaddr;
  46 using irc::sockets::insp_sockaddr;
  47
  48 InspIRCd* SI = NULL;
  49 int* mysig = NULL;
  50
  51
  52 /* Moved from exitcodes.h -- due to duplicate symbols -- Burlex
  53  * XXX this is a bit ugly. -- w00t
  54  */
  55 const char* ExitCodes[] =
  56 {
  57                 "No error", /* 0 */
  58                 "DIE command", /* 1 */
  59                 "execv() failed", /* 2 */
  60                 "Internal error", /* 3 */
  61                 "Config file error", /* 4 */
  62                 "Logfile error", /* 5 */
  63                 "POSIX fork failed", /* 6 */
  64                 "Bad commandline parameters", /* 7 */
  65                 "No ports could be bound", /* 8 */
  66                 "Can't write PID file", /* 9 */
  67                 "SocketEngine could not initialize", /* 10 */
  68                 "Refusing to start up as root", /* 11 */
  69                 "Found a <die> tag!", /* 12 */
  70                 "Couldn't load module on startup", /* 13 */
  71                 "Could not create windows forked process", /* 14 */
  72                 "Received SIGTERM", /* 15 */
  73 };
  74
  75 void InspIRCd::Cleanup()
  76 {
  77         if (Config)
  78         {
  79                 for (unsigned int i = 0; i < Config->ports.size(); i++)
  80                 {
  81                         /* This calls the constructor and closes the listening socket */
  82                         delete Config->ports[i];
  83                 }
  84
  85                 Config->ports.clear();
  86         }
  87
  88         /* Close all client sockets, or the new process inherits them */
  89         for (std::vector<User*>::const_iterator i = this->Users->local_users.begin(); i != this->Users->local_users.end(); i++)
  90         {
  91                 (*i)->SetWriteError("Server shutdown");
  92                 (*i)->CloseSocket();
  93         }
  94
  95         /* We do this more than once, so that any service providers get a
  96          * chance to be unhooked by the modules using them, but then get
  97          * a chance to be removed themsleves.
  98          *
  99          * XXX there may be a better way to do this with 1.2
 100          */
 101         for (int tries = 0; tries < 3; tries++)
 102         {
 103                 std::vector<std::string> module_names = Modules->GetAllModuleNames(0);
 104                 for (std::vector<std::string>::iterator k = module_names.begin(); k != module_names.end(); ++k)
 105                 {
 106                         /* Unload all modules, so they get a chance to clean up their listeners */
 107                         this->Modules->Unload(k->c_str());
 108                 }
 109         }
 110
 111         /* Close logging */
 112         this->Logs->CloseLogs();
 113
 114         /* Cleanup Server Names */
 115         for(servernamelist::iterator itr = servernames.begin(); itr != servernames.end(); ++itr)
 116                 delete (*itr);
 117
 118
 119 }
 120
 121 void InspIRCd::Restart(const std::string &reason)
 122 {
 123         /* SendError flushes each client's queue,
 124          * regardless of writeability state
 125          */
 126         this->SendError(reason);
 127
 128         this->Cleanup();
 129
 130         /* Figure out our filename (if theyve renamed it, we're boned) */
 131         std::string me;
 132
 133 #ifdef WINDOWS
 134         char module[MAX_PATH];
 135         if (GetModuleFileName(NULL, module, MAX_PATH))
 136                 me = module;
 137 #else
 138         me = Config->MyDir + "/inspircd";
 139 #endif
 140
 141         if (execv(me.c_str(), Config->argv) == -1)
 142         {
 143                 /* Will raise a SIGABRT if not trapped */
 144                 throw CoreException(std::string("Failed to execv()! error: ") + strerror(errno));
 145         }
 146 }
 147
 148 void InspIRCd::ResetMaxBans()
 149 {
 150         for (chan_hash::const_iterator i = chanlist->begin(); i != chanlist->end(); i++)
 151                 i->second->ResetMaxBans();
 152 }
 153
 154 /** Because hash_map doesnt free its buckets when we delete items (this is a 'feature')
 155  * we must occasionally rehash the hash (yes really).
 156  * We do this by copying the entries from the old hash to a new hash, causing all
 157  * empty buckets to be weeded out of the hash. We dont do this on a timer, as its
 158  * very expensive, so instead we do it when the user types /REHASH and expects a
 159  * short delay anyway.
 160  */
 161 void InspIRCd::RehashUsersAndChans()
 162 {
 163         user_hash* old_users = this->Users->clientlist;
 164         user_hash* old_uuid  = this->Users->uuidlist;
 165         chan_hash* old_chans = this->chanlist;
 166
 167         this->Users->clientlist = new user_hash();
 168         this->Users->uuidlist = new user_hash();
 169         this->chanlist = new chan_hash();
 170
 171         for (user_hash::const_iterator n = old_users->begin(); n != old_users->end(); n++)
 172                 this->Users->clientlist->insert(*n);
 173
 174         delete old_users;
 175
 176         for (user_hash::const_iterator n = old_uuid->begin(); n != old_uuid->end(); n++)
 177                 this->Users->uuidlist->insert(*n);
 178
 179         delete old_uuid;
 180
 181         for (chan_hash::const_iterator n = old_chans->begin(); n != old_chans->end(); n++)
 182                 this->chanlist->insert(*n);
 183
 184         delete old_chans;
 185 }
 186
 187 void InspIRCd::SetSignals()
 188 {
 189 #ifndef WIN32
 190         signal(SIGALRM, SIG_IGN);
 191         signal(SIGHUP, InspIRCd::SetSignal);
 192         signal(SIGPIPE, SIG_IGN);
 193         signal(SIGCHLD, SIG_IGN);
 194 #endif
 195         signal(SIGTERM, InspIRCd::SetSignal);
 196 }
 197
 198 void InspIRCd::QuickExit(int status)
 199 {
 200         exit(0);
 201 }
 202
 203 bool InspIRCd::DaemonSeed()
 204 {
 205 #ifdef WINDOWS
 206         printf_c("InspIRCd Process ID: \033[1;32m%lu\033[0m\n", GetCurrentProcessId());
 207         return true;
 208 #else
 209         signal(SIGTERM, InspIRCd::QuickExit);
 210
 211         int childpid;
 212         if ((childpid = fork ()) < 0)
 213                 return false;
 214         else if (childpid > 0)
 215         {
 216                 /* We wait here for the child process to kill us,
 217                  * so that the shell prompt doesnt come back over
 218                  * the output.
 219                  * Sending a kill with a signal of 0 just checks
 220                  * if the child pid is still around. If theyre not,
 221                  * they threw an error and we should give up.
 222                  */
 223                 while (kill(childpid, 0) != -1)
 224                         sleep(1);
 225                 exit(0);
 226         }
 227         setsid ();
 228         umask (007);
 229         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 230
 231         signal(SIGTERM, InspIRCd::SetSignal);
 232
 233         rlimit rl;
 234         if (getrlimit(RLIMIT_CORE, &rl) == -1)
 235         {
 236                 this->Logs->Log("STARTUP",DEFAULT,"Failed to getrlimit()!");
 237                 return false;
 238         }
 239         else
 240         {
 241                 rl.rlim_cur = rl.rlim_max;
 242                 if (setrlimit(RLIMIT_CORE, &rl) == -1)
 243                         this->Logs->Log("STARTUP",DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 244         }
 245
 246         return true;
 247 #endif
 248 }
 249
 250 void InspIRCd::WritePID(const std::string &filename)
 251 {
 252         std::string fname = (filename.empty() ? "inspircd.pid" : filename);
 253         if (*(fname.begin()) != '/')
 254         {
 255                 std::string::size_type pos;
 256                 std::string confpath = this->ConfigFileName;
 257                 if ((pos = confpath.rfind("/")) != std::string::npos)
 258                 {
 259                         /* Leaves us with just the path */
 260                         fname = confpath.substr(0, pos) + std::string("/") + fname;
 261                 }
 262         }
 263         std::ofstream outfile(fname.c_str());
 264         if (outfile.is_open())
 265         {
 266                 outfile << getpid();
 267                 outfile.close();
 268         }
 269         else
 270         {
 271                 printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
 272                 this->Logs->Log("STARTUP",DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
 273                 Exit(EXIT_STATUS_PID);
 274         }
 275 }
 276
 277 InspIRCd::InspIRCd(int argc, char** argv)
 278         : GlobalCulls(this),
 279
 280          /* Functor initialisation. Note that the ordering here is very important. */
 281          HandleProcessUser(this),
 282          HandleIsNick(this),
 283          HandleIsIdent(this),
 284          HandleFindDescriptor(this),
 285          HandleFloodQuitUser(this),
 286
 287          /* Functor pointer initialisation. Must match the order of the list above */
 288          ProcessUser(&HandleProcessUser),
 289          IsNick(&HandleIsNick),
 290          IsIdent(&HandleIsIdent),
 291          FindDescriptor(&HandleFindDescriptor),
 292          FloodQuitUser(&HandleFloodQuitUser)
 293
 294 {
 295
 296         int found_ports = 0;
 297         FailedPortList pl;
 298         int do_version = 0, do_nofork = 0, do_debug = 0,
 299             do_nolog = 0, do_root = 0, do_testsuite = 0;    /* flag variables */
 300         char c = 0;
 301
 302         memset(&server, 0, sizeof(server));
 303         memset(&client, 0, sizeof(client));
 304
 305         // This must be created first, so other parts of Insp can use it while starting up
 306         this->Logs = new LogManager(this);
 307
 308         SocketEngineFactory* SEF = new SocketEngineFactory();
 309         SE = SEF->Create(this);
 310         delete SEF;
 311
 312
 313         ThreadEngineFactory* tef = new ThreadEngineFactory();
 314         this->Threads = tef->Create(this);
 315         delete tef;
 316
 317         this->s_signal = 0;
 318
 319         // Create base manager classes early, so nothing breaks
 320         this->Users = new UserManager(this);
 321
 322         this->Users->unregistered_count = 0;
 323
 324         this->Users->clientlist = new user_hash();
 325         this->Users->uuidlist = new user_hash();
 326         this->chanlist = new chan_hash();
 327
 328         this->Res = NULL;
 329
 330         this->Config = new ServerConfig(this);
 331         this->SNO = new SnomaskManager(this);
 332         this->BanCache = new BanCacheManager(this);
 333         this->Modules = new ModuleManager(this);
 334         this->stats = new serverstats();
 335         this->Timers = new TimerManager(this);
 336         this->Parser = new CommandParser(this);
 337         this->XLines = new XLineManager(this);
 338
 339         this->Config->argv = argv;
 340         this->Config->argc = argc;
 341
 342         if (chdir(Config->GetFullProgDir().c_str()))
 343         {
 344                 printf("Unable to change to my directory: %s\nAborted.", strerror(errno));
 345                 exit(0);
 346         }
 347
 348         this->Config->opertypes.clear();
 349         this->Config->operclass.clear();
 350
 351         this->TIME = this->OLDTIME = this->startup_time = time(NULL);
 352         srand(this->TIME);
 353
 354         *this->LogFileName = 0;
 355         strlcpy(this->ConfigFileName, CONFIG_FILE, MAXBUF);
 356
 357         struct option longopts[] =
 358         {
 359                 { "nofork",     no_argument,            &do_nofork,     1       },
 360                 { "logfile",    required_argument,      NULL,           'f'     },
 361                 { "config",     required_argument,      NULL,           'c'     },
 362                 { "debug",      no_argument,            &do_debug,      1       },
 363                 { "nolog",      no_argument,            &do_nolog,      1       },
 364                 { "runasroot",  no_argument,            &do_root,       1       },
 365                 { "version",    no_argument,            &do_version,    1       },
 366                 { "testsuite",  no_argument,            &do_testsuite,  1       },
 367                 { 0, 0, 0, 0 }
 368         };
 369
 370         while ((c = getopt_long_only(argc, argv, ":f:", longopts, NULL)) != -1)
 371         {
 372                 switch (c)
 373                 {
 374                         case 'f':
 375                                 /* Log filename was set */
 376                                 strlcpy(LogFileName, optarg, MAXBUF);
 377                         break;
 378                         case 'c':
 379                                 /* Config filename was set */
 380                                 strlcpy(ConfigFileName, optarg, MAXBUF);
 381                         break;
 382                         case 0:
 383                                 /* getopt_long_only() set an int variable, just keep going */
 384                         break;
 385                         default:
 386                                 /* Unknown parameter! DANGER, INTRUDER.... err.... yeah. */
 387                                 printf("Usage: %s [--nofork] [--nolog] [--debug] [--logfile <filename>]\n\
 388                                                   [--runasroot] [--version] [--config <config>] [--testsuite]\n", argv[0]);
 389                                 Exit(EXIT_STATUS_ARGV);
 390                         break;
 391                 }
 392         }
 393
 394         if (do_testsuite)
 395                 do_nofork = do_debug = true;
 396
 397         if (do_version)
 398         {
 399                 printf("\n%s r%s\n", VERSION, REVISION);
 400                 Exit(EXIT_STATUS_NOERROR);
 401         }
 402
 403 #ifdef WIN32
 404
 405         // Handle forking
 406         if(!do_nofork)
 407         {
 408                 DWORD ExitCode = WindowsForkStart(this);
 409                 if(ExitCode)
 410                         exit(ExitCode);
 411         }
 412
 413         // Set up winsock
 414         WSADATA wsadata;
 415         WSAStartup(MAKEWORD(2,0), &wsadata);
 416         ChangeWindowsSpecificPointers(this);
 417 #endif
 418         strlcpy(Config->MyExecutable,argv[0],MAXBUF);
 419
 420         /* Set the finished argument values */
 421         Config->nofork = do_nofork;
 422         Config->forcedebug = do_debug;
 423         Config->writelog = !do_nolog;
 424         Config->TestSuite = do_testsuite;
 425
 426         if (!this->OpenLog(argv, argc))
 427         {
 428                 printf("ERROR: Could not open logfile %s: %s\n\n", Config->logpath.c_str(), strerror(errno));
 429                 Exit(EXIT_STATUS_LOG);
 430         }
 431
 432         if (!ServerConfig::FileExists(this->ConfigFileName))
 433         {
 434                 printf("ERROR: Cannot open config file: %s\nExiting...\n", this->ConfigFileName);
 435                 this->Logs->Log("STARTUP",DEFAULT,"Unable to open config file %s", this->ConfigFileName);
 436                 Exit(EXIT_STATUS_CONFIG);
 437         }
 438
 439         printf_c("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
 440         printf_c("(C) InspIRCd Development Team.\033[0m\n\n");
 441         printf_c("Developers:\n");
 442         printf_c("\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special\n");
 443         printf_c("\t\033[1;32mpippijn, peavey, aquanight, fez\033[0m\n\n");
 444         printf_c("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
 445
 446         Config->ClearStack();
 447
 448         this->Modes = new ModeParser(this);
 449
 450         if (!do_root)
 451                 this->CheckRoot();
 452         else
 453         {
 454                 printf("* WARNING * WARNING * WARNING * WARNING * WARNING * \n\n");
 455                 printf("YOU ARE RUNNING INSPIRCD AS ROOT. THIS IS UNSUPPORTED\n");
 456                 printf("AND IF YOU ARE HACKED, CRACKED, SPINDLED OR MUTILATED\n");
 457                 printf("OR ANYTHING ELSE UNEXPECTED HAPPENS TO YOU OR YOUR\n");
 458                 printf("SERVER, THEN IT IS YOUR OWN FAULT. IF YOU DID NOT MEAN\n");
 459                 printf("TO START INSPIRCD AS ROOT, HIT CTRL+C NOW AND RESTART\n");
 460                 printf("THE PROGRAM AS A NORMAL USER. YOU HAVE BEEN WARNED!\n");
 461                 printf("\nInspIRCd starting in 20 seconds, ctrl+c to abort...\n");
 462                 sleep(20);
 463         }
 464
 465         this->SetSignals();
 466
 467         if (!Config->nofork)
 468         {
 469                 if (!this->DaemonSeed())
 470                 {
 471                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 472                         Logs->Log("STARTUP", DEFAULT, "ERROR: could not go into daemon mode. Shutting down.");
 473                         Exit(EXIT_STATUS_FORK);
 474                 }
 475         }
 476
 477         SE->RecoverFromFork();
 478
 479         /* During startup we don't actually initialize this
 480          * in the thread engine.
 481          */
 482         this->ConfigThread = new ConfigReaderThread(this, true, NULL);
 483         ConfigThread->Run();
 484         delete ConfigThread;
 485         this->ConfigThread = NULL;
 486
 487         this->Res = new DNS(this);
 488
 489         this->AddServerName(Config->ServerName);
 490
 491         /*
 492          * Initialise SID/UID.
 493          * For an explanation as to exactly how this works, and why it works this way, see GetUID().
 494          *   -- w00t
 495          */
 496         if (!*Config->sid)
 497         {
 498                 // Generate one
 499                 size_t sid = 0;
 500
 501                 for (const char* x = Config->ServerName; *x; ++x)
 502                         sid = 5 * sid + *x;
 503                 for (const char* y = Config->ServerDesc; *y; ++y)
 504                         sid = 5 * sid + *y;
 505                 sid = sid % 999;
 506
 507                 Config->sid[0] = (char)(sid / 100 + 48);
 508                 Config->sid[1] = (char)(((sid / 10) % 10) + 48);
 509                 Config->sid[2] = (char)(sid % 10 + 48);
 510         }
 511
 512         /* set up fake client again this time with the correct uid */
 513         this->FakeClient = new User(this, "#INVALID");
 514         this->FakeClient->SetFd(FD_MAGIC_NUMBER);
 515
 516         // Get XLine to do it's thing.
 517         this->XLines->CheckELines();
 518         this->XLines->ApplyLines();
 519
 520         CheckDie();
 521         int bounditems = BindPorts(true, found_ports, pl);
 522
 523         printf("\n");
 524
 525         this->Modules->LoadAll();
 526
 527         /* Just in case no modules were loaded - fix for bug #101 */
 528         this->BuildISupport();
 529         InitializeDisabledCommands(Config->DisabledCommands, this);
 530
 531         /*if ((Config->ports.size() == 0) && (found_ports > 0))
 532         {
 533                 printf("\nERROR: I couldn't bind any ports! Are you sure you didn't start InspIRCd twice?\n");
 534                 Logs->Log("STARTUP", DEFAULT,"ERROR: I couldn't bind any ports! Something else is bound to those ports!");
 535                 Exit(EXIT_STATUS_BIND);
 536         }*/
 537
 538         if (Config->ports.size() != (unsigned int)found_ports)
 539         {
 540                 printf("\nWARNING: Not all your client ports could be bound --\nstarting anyway with %d of %d client ports bound.\n\n", bounditems, found_ports);
 541                 printf("The following port(s) failed to bind:\n");
 542                 int j = 1;
 543                 for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 544                 {
 545                         printf("%d.\tIP: %s\tPort: %lu\n", j, i->first.empty() ? "<all>" : i->first.c_str(), (unsigned long)i->second);
 546                 }
 547         }
 548
 549         printf("\nInspIRCd is now running as '%s'[%s] with %d max open sockets\n", Config->ServerName,Config->GetSID().c_str(), SE->GetMaxFds());
 550
 551 #ifndef WINDOWS
 552         if (!Config->nofork)
 553         {
 554                 if (kill(getppid(), SIGTERM) == -1)
 555                 {
 556                         printf("Error killing parent process: %s\n",strerror(errno));
 557                         Logs->Log("STARTUP", DEFAULT, "Error killing parent process: %s",strerror(errno));
 558                 }
 559         }
 560
 561         if (isatty(0) && isatty(1) && isatty(2))
 562         {
 563                 /* We didn't start from a TTY, we must have started from a background process -
 564                  * e.g. we are restarting, or being launched by cron. Dont kill parent, and dont
 565                  * close stdin/stdout
 566                  */
 567                 if (!do_nofork)
 568                 {
 569                         fclose(stdin);
 570                         fclose(stderr);
 571                         fclose(stdout);
 572                 }
 573                 else
 574                 {
 575                         Logs->Log("STARTUP", DEFAULT,"Keeping pseudo-tty open as we are running in the foreground.");
 576                 }
 577         }
 578 #else
 579         WindowsIPC = new IPC(this);
 580         if(!Config->nofork)
 581         {
 582                 WindowsForkKillOwner(this);
 583                 FreeConsole();
 584         }
 585 #endif
 586
 587         Logs->Log("STARTUP", DEFAULT, "Startup complete as '%s'[%s], %d max open sockets", Config->ServerName,Config->GetSID().c_str(), SE->GetMaxFds());
 588
 589         this->WritePID(Config->PID);
 590 }
 591
 592 int InspIRCd::Run()
 593 {
 594         /* See if we're supposed to be running the test suite rather than entering the mainloop */
 595         if (Config->TestSuite)
 596         {
 597                 TestSuite* ts = new TestSuite(this);
 598                 delete ts;
 599                 Exit(0);
 600         }
 601
 602         while (true)
 603         {
 604 #ifndef WIN32
 605                 static rusage ru;
 606 #else
 607                 static time_t uptime;
 608                 static struct tm * stime;
 609                 static char window_title[100];
 610 #endif
 611
 612                 /* Check if there is a config thread which has finished executing but has not yet been freed */
 613                 if (this->ConfigThread && this->ConfigThread->GetExitFlag())
 614                 {
 615                         /* Rehash has completed */
 616                         this->Logs->Log("CONFIG",DEBUG,"Detected ConfigThread exiting, tidying up...");
 617
 618                         /* IMPORTANT: This delete may hang if you fuck up your thread syncronization.
 619                          * It will hang waiting for the ConfigThread to 'join' to avoid race conditons,
 620                          * until the other thread is completed.
 621                          */
 622                         delete ConfigThread;
 623                         ConfigThread = NULL;
 624
 625                         /* These are currently not known to be threadsafe, so they are executed outside
 626                          * of the thread. It would be pretty simple to move them to the thread Run method
 627                          * once they are known threadsafe with all the correct mutexes in place.
 628                          *
 629                          * XXX: The order of these is IMPORTANT, do not reorder them without testing
 630                          * thoroughly!!!
 631                          */
 632                         this->XLines->CheckELines();
 633                         this->XLines->ApplyLines();
 634                         this->Res->Rehash();
 635                         this->ResetMaxBans();
 636                         InitializeDisabledCommands(Config->DisabledCommands, this);
 637                         FOREACH_MOD_I(this, I_OnRehash, OnRehash(Config->RehashUser, Config->RehashParameter));
 638                         this->BuildISupport();
 639                 }
 640
 641                 /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
 642                  * Once per loop iteration is pleanty.
 643                  */
 644                 OLDTIME = TIME;
 645                 TIME = time(NULL);
 646
 647                 /* Run background module timers every few seconds
 648                  * (the docs say modules shouldnt rely on accurate
 649                  * timing using this event, so we dont have to
 650                  * time this exactly).
 651                  */
 652                 if (TIME != OLDTIME)
 653                 {
 654                         if (TIME < OLDTIME)
 655                         {
 656                                 SNO->WriteToSnoMask('A', "\002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %lu secs.", (unsigned long)OLDTIME-TIME);
 657                         }
 658
 659                         if ((TIME % 3600) == 0)
 660                         {
 661                                 this->RehashUsersAndChans();
 662                                 FOREACH_MOD_I(this, I_OnGarbageCollect, OnGarbageCollect());
 663                         }
 664
 665                         Timers->TickTimers(TIME);
 666                         this->DoBackgroundUserStuff();
 667
 668                         if ((TIME % 5) == 0)
 669                         {
 670                                 FOREACH_MOD_I(this,I_OnBackgroundTimer,OnBackgroundTimer(TIME));
 671                                 SNO->FlushSnotices();
 672                         }
 673 #ifndef WIN32
 674                         /* Same change as in cmd_stats.cpp, use RUSAGE_SELF rather than '0' -- Om */
 675                         if (!getrusage(RUSAGE_SELF, &ru))
 676                         {
 677                                 gettimeofday(&this->stats->LastSampled, NULL);
 678                                 this->stats->LastCPU = ru.ru_utime;
 679                         }
 680 #else
 681                         WindowsIPC->Check();
 682 #endif
 683                 }
 684
 685                 /* Call the socket engine to wait on the active
 686                  * file descriptors. The socket engine has everything's
 687                  * descriptors in its list... dns, modules, users,
 688                  * servers... so its nice and easy, just one call.
 689                  * This will cause any read or write events to be
 690                  * dispatched to their handlers.
 691                  */
 692                 this->SE->DispatchEvents();
 693
 694                 /* if any users were quit, take them out */
 695                 this->GlobalCulls.Apply();
 696
 697                 /* If any inspsockets closed, remove them */
 698                 this->BufferedSocketCull();
 699
 700                 if (this->s_signal)
 701                 {
 702                         this->SignalHandler(s_signal);
 703                         this->s_signal = 0;
 704                 }
 705         }
 706
 707         return 0;
 708 }
 709
 710 void InspIRCd::BufferedSocketCull()
 711 {
 712         for (std::map<BufferedSocket*,BufferedSocket*>::iterator x = SocketCull.begin(); x != SocketCull.end(); ++x)
 713         {
 714                 this->Logs->Log("MISC",DEBUG,"Cull socket");
 715                 SE->DelFd(x->second);
 716                 x->second->Close();
 717                 delete x->second;
 718         }
 719         SocketCull.clear();
 720 }
 721
 722 /**********************************************************************************/
 723
 724 /**
 725  * An ircd in five lines! bwahahaha. ahahahahaha. ahahah *cough*.
 726  */
 727
 728 int main(int argc, char ** argv)
 729 {
 730         SI = new InspIRCd(argc, argv);
 731         mysig = &SI->s_signal;
 732         SI->Run();
 733         delete SI;
 734         return 0;
 735 }
 736
 737 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 738  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 739  * registration timeout maximum seconds)
 740  */
 741 bool InspIRCd::AllModulesReportReady(User* user)
 742 {
 743         for (EventHandlerIter i = Modules->EventHandlers[I_OnCheckReady].begin(); i != Modules->EventHandlers[I_OnCheckReady].end(); ++i)
 744         {
 745                 if (!(*i)->OnCheckReady(user))
 746                         return false;
 747         }
 748         return true;
 749 }
 750
 751 time_t InspIRCd::Time()
 752 {
 753         return TIME;
 754 }
 755
 756 void InspIRCd::SetSignal(int signal)
 757 {
 758         *mysig = signal;
 759 }