src/inspircd.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2010 InspIRCd Development Team
   6  * See: http://wiki.inspircd.org/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *          the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 /* $Core */
  15 #include "inspircd.h"
  16 #include "inspircd_version.h"
  17 #include <signal.h>
  18
  19 #ifndef WIN32
  20         #include <dirent.h>
  21         #include <unistd.h>
  22         #include <sys/resource.h>
  23         #include <dlfcn.h>
  24         #include <getopt.h>
  25
  26         /* Some systems don't define RUSAGE_SELF. This should fix them. */
  27         #ifndef RUSAGE_SELF
  28                 #define RUSAGE_SELF 0
  29         #endif
  30
  31         #include <pwd.h> // setuid
  32         #include <grp.h> // setgid
  33 #endif
  34
  35 #include <fstream>
  36 #include "xline.h"
  37 #include "bancache.h"
  38 #include "socketengine.h"
  39 #include "socket.h"
  40 #include "command_parse.h"
  41 #include "exitcodes.h"
  42 #include "caller.h"
  43 #include "testsuite.h"
  44
  45 InspIRCd* ServerInstance = NULL;
  46 int* mysig = NULL;
  47
  48 /** Seperate from the other casemap tables so that code *can* still exclusively rely on RFC casemapping
  49  * if it must.
  50  *
  51  * This is provided as a pointer so that modules can change it to their custom mapping tables,
  52  * e.g. for national character support.
  53  */
  54 unsigned const char *national_case_insensitive_map = rfc_case_insensitive_map;
  55
  56
  57 /* Moved from exitcodes.h -- due to duplicate symbols -- Burlex
  58  * XXX this is a bit ugly. -- w00t
  59  */
  60 const char* ExitCodes[] =
  61 {
  62                 "No error", /* 0 */
  63                 "DIE command", /* 1 */
  64                 "execv() failed", /* 2 */
  65                 "Internal error", /* 3 */
  66                 "Config file error", /* 4 */
  67                 "Logfile error", /* 5 */
  68                 "POSIX fork failed", /* 6 */
  69                 "Bad commandline parameters", /* 7 */
  70                 "No ports could be bound", /* 8 */
  71                 "Can't write PID file", /* 9 */
  72                 "SocketEngine could not initialize", /* 10 */
  73                 "Refusing to start up as root", /* 11 */
  74                 "Found a <die> tag!", /* 12 */
  75                 "Couldn't load module on startup", /* 13 */
  76                 "Could not create windows forked process", /* 14 */
  77                 "Received SIGTERM", /* 15 */
  78                 "Bad command handler loaded", /* 16 */
  79                 "RegisterServiceCtrlHandler failed", /* 17 */
  80                 "UpdateSCMStatus failed", /* 18 */
  81                 "CreateEvent failed" /* 19 */
  82 };
  83
  84 template<typename T> static void DeleteZero(T*&n)
  85 {
  86         T* t = n;
  87         n = NULL;
  88         delete t;
  89 }
  90
  91 void InspIRCd::Cleanup()
  92 {
  93         for (unsigned int i = 0; i < ports.size(); i++)
  94         {
  95                 /* This calls the constructor and closes the listening socket */
  96                 ports[i]->cull();
  97                 delete ports[i];
  98         }
  99         ports.clear();
 100
 101         /* Close all client sockets, or the new process inherits them */
 102         std::vector<LocalUser*>::reverse_iterator i = Users->local_users.rbegin();
 103         while (i != this->Users->local_users.rend())
 104         {
 105                 User* u = *i++;
 106                 Users->QuitUser(u, "Server shutdown");
 107         }
 108
 109         GlobalCulls.Apply();
 110         Modules->UnloadAll();
 111
 112         /* Delete objects dynamically allocated in constructor (destructor would be more appropriate, but we're likely exiting) */
 113         /* Must be deleted before modes as it decrements modelines */
 114         if (FakeClient)
 115                 FakeClient->cull();
 116         if (Res)
 117                 Res->cull();
 118         DeleteZero(this->FakeClient);
 119         DeleteZero(this->Users);
 120         DeleteZero(this->Modes);
 121         DeleteZero(this->XLines);
 122         DeleteZero(this->Parser);
 123         DeleteZero(this->stats);
 124         DeleteZero(this->Modules);
 125         DeleteZero(this->BanCache);
 126         DeleteZero(this->SNO);
 127         DeleteZero(this->Config);
 128         DeleteZero(this->Res);
 129         DeleteZero(this->chanlist);
 130         DeleteZero(this->PI);
 131         DeleteZero(this->Threads);
 132         DeleteZero(this->Timers);
 133         DeleteZero(this->SE);
 134         /* Close logging */
 135         this->Logs->CloseLogs();
 136         DeleteZero(this->Logs);
 137 }
 138
 139 void InspIRCd::Restart(const std::string &reason)
 140 {
 141         /* SendError flushes each client's queue,
 142          * regardless of writeability state
 143          */
 144         this->SendError(reason);
 145
 146         /* Figure out our filename (if theyve renamed it, we're boned) */
 147         std::string me;
 148
 149         char** argv = Config->cmdline.argv;
 150
 151 #ifdef WINDOWS
 152         char module[MAX_PATH];
 153         if (GetModuleFileName(NULL, module, MAX_PATH))
 154                 me = module;
 155 #else
 156         me = argv[0];
 157 #endif
 158
 159         this->Cleanup();
 160
 161         if (execv(me.c_str(), argv) == -1)
 162         {
 163                 /* Will raise a SIGABRT if not trapped */
 164                 throw CoreException(std::string("Failed to execv()! error: ") + strerror(errno));
 165         }
 166 }
 167
 168 void InspIRCd::ResetMaxBans()
 169 {
 170         for (chan_hash::const_iterator i = chanlist->begin(); i != chanlist->end(); i++)
 171                 i->second->ResetMaxBans();
 172 }
 173
 174 /** Because hash_map doesnt free its buckets when we delete items (this is a 'feature')
 175  * we must occasionally rehash the hash (yes really).
 176  * We do this by copying the entries from the old hash to a new hash, causing all
 177  * empty buckets to be weeded out of the hash. We dont do this on a timer, as its
 178  * very expensive, so instead we do it when the user types /REHASH and expects a
 179  * short delay anyway.
 180  */
 181 void InspIRCd::RehashUsersAndChans()
 182 {
 183         user_hash* old_users = this->Users->clientlist;
 184         user_hash* old_uuid  = this->Users->uuidlist;
 185         chan_hash* old_chans = this->chanlist;
 186
 187         this->Users->clientlist = new user_hash();
 188         this->Users->uuidlist = new user_hash();
 189         this->chanlist = new chan_hash();
 190
 191         for (user_hash::const_iterator n = old_users->begin(); n != old_users->end(); n++)
 192                 this->Users->clientlist->insert(*n);
 193
 194         delete old_users;
 195
 196         for (user_hash::const_iterator n = old_uuid->begin(); n != old_uuid->end(); n++)
 197                 this->Users->uuidlist->insert(*n);
 198
 199         delete old_uuid;
 200
 201         for (chan_hash::const_iterator n = old_chans->begin(); n != old_chans->end(); n++)
 202                 this->chanlist->insert(*n);
 203
 204         delete old_chans;
 205 }
 206
 207 void InspIRCd::SetSignals()
 208 {
 209 #ifndef WIN32
 210         signal(SIGALRM, SIG_IGN);
 211         signal(SIGHUP, InspIRCd::SetSignal);
 212         signal(SIGPIPE, SIG_IGN);
 213         signal(SIGCHLD, SIG_IGN);
 214         /* We want E2BIG not a signal! */
 215         signal(SIGXFSZ, SIG_IGN);
 216 #endif
 217         signal(SIGTERM, InspIRCd::SetSignal);
 218 }
 219
 220 void InspIRCd::QuickExit(int status)
 221 {
 222         exit(0);
 223 }
 224
 225 bool InspIRCd::DaemonSeed()
 226 {
 227 #ifdef WINDOWS
 228         printf_c("InspIRCd Process ID: \033[1;32m%lu\033[0m\n", GetCurrentProcessId());
 229         return true;
 230 #else
 231         signal(SIGTERM, InspIRCd::QuickExit);
 232
 233         int childpid;
 234         if ((childpid = fork ()) < 0)
 235                 return false;
 236         else if (childpid > 0)
 237         {
 238                 /* We wait here for the child process to kill us,
 239                  * so that the shell prompt doesnt come back over
 240                  * the output.
 241                  * Sending a kill with a signal of 0 just checks
 242                  * if the child pid is still around. If theyre not,
 243                  * they threw an error and we should give up.
 244                  */
 245                 while (kill(childpid, 0) != -1)
 246                         sleep(1);
 247                 exit(0);
 248         }
 249         setsid ();
 250         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 251
 252         signal(SIGTERM, InspIRCd::SetSignal);
 253
 254         rlimit rl;
 255         if (getrlimit(RLIMIT_CORE, &rl) == -1)
 256         {
 257                 this->Logs->Log("STARTUP",DEFAULT,"Failed to getrlimit()!");
 258                 return false;
 259         }
 260         rl.rlim_cur = rl.rlim_max;
 261
 262         if (setrlimit(RLIMIT_CORE, &rl) == -1)
 263                         this->Logs->Log("STARTUP",DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 264
 265         return true;
 266 #endif
 267 }
 268
 269 void InspIRCd::WritePID(const std::string &filename)
 270 {
 271         std::string fname(filename);
 272         if (fname.empty())
 273                 fname = "data/inspircd.pid";
 274         std::ofstream outfile(fname.c_str());
 275         if (outfile.is_open())
 276         {
 277                 outfile << getpid();
 278                 outfile.close();
 279         }
 280         else
 281         {
 282                 printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
 283                 this->Logs->Log("STARTUP",DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
 284                 Exit(EXIT_STATUS_PID);
 285         }
 286 }
 287
 288 InspIRCd::InspIRCd(int argc, char** argv) :
 289          ConfigFileName("conf/inspircd.conf"),
 290
 291          /* Functor pointer initialisation.
 292           *
 293           * THIS MUST MATCH THE ORDER OF DECLARATION OF THE FUNCTORS, e.g. the methods
 294           * themselves within the class.
 295           */
 296          NICKForced("NICKForced", NULL),
 297          OperQuit("OperQuit", NULL),
 298          GenRandom(&HandleGenRandom),
 299          IsChannel(&HandleIsChannel),
 300          IsSID(&HandleIsSID),
 301          Rehash(&HandleRehash),
 302          IsNick(&HandleIsNick),
 303          IsIdent(&HandleIsIdent),
 304          FloodQuitUser(&HandleFloodQuitUser)
 305 {
 306 #ifdef WIN32
 307         // Strict, frequent checking of memory on debug builds
 308         _CrtSetDbgFlag ( _CRTDBG_CHECK_ALWAYS_DF | _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
 309
 310         // Avoid erroneous frees on early exit
 311         WindowsIPC = 0;
 312 #endif
 313
 314         ServerInstance = this;
 315
 316         Extensions.Register(&NICKForced);
 317         Extensions.Register(&OperQuit);
 318
 319         FailedPortList pl;
 320         int do_version = 0, do_nofork = 0, do_debug = 0,
 321             do_nolog = 0, do_root = 0, do_testsuite = 0;    /* flag variables */
 322         int c = 0;
 323
 324         // Initialize so that if we exit before proper initialization they're not deleted
 325         this->Logs = 0;
 326         this->Threads = 0;
 327         this->PI = 0;
 328         this->Users = 0;
 329         this->chanlist = 0;
 330         this->Config = 0;
 331         this->SNO = 0;
 332         this->BanCache = 0;
 333         this->Modules = 0;
 334         this->stats = 0;
 335         this->Timers = 0;
 336         this->Parser = 0;
 337         this->XLines = 0;
 338         this->Modes = 0;
 339         this->Res = 0;
 340         this->ConfigThread = NULL;
 341
 342         // Initialise TIME
 343         clock_gettime(CLOCK_REALTIME, &TIME);
 344         this->startup_time = TIME.tv_sec;
 345
 346         // This must be created first, so other parts of Insp can use it while starting up
 347         this->Logs = new LogManager;
 348
 349         SE = CreateSocketEngine();
 350
 351         this->Threads = new ThreadEngine;
 352
 353         /* Default implementation does nothing */
 354         this->PI = new ProtocolInterface;
 355
 356         this->s_signal = 0;
 357
 358         // Create base manager classes early, so nothing breaks
 359         this->Users = new UserManager;
 360
 361         this->Users->unregistered_count = 0;
 362
 363         this->Users->clientlist = new user_hash();
 364         this->Users->uuidlist = new user_hash();
 365         this->chanlist = new chan_hash();
 366
 367         this->Config = new ServerConfig;
 368         this->SNO = new SnomaskManager;
 369         this->BanCache = new BanCacheManager;
 370         this->Modules = new ModuleManager();
 371         this->stats = new serverstats();
 372         this->Timers = new TimerManager;
 373         this->Parser = new CommandParser;
 374         this->XLines = new XLineManager;
 375
 376         this->Config->cmdline.argv = argv;
 377         this->Config->cmdline.argc = argc;
 378
 379         srandom(TIME.tv_nsec ^ TIME.tv_sec);
 380
 381         struct option longopts[] =
 382         {
 383                 { "nofork",     no_argument,            &do_nofork,     1       },
 384                 { "logfile",    required_argument,      NULL,           'f'     },
 385                 { "config",     required_argument,      NULL,           'c'     },
 386                 { "debug",      no_argument,            &do_debug,      1       },
 387                 { "nolog",      no_argument,            &do_nolog,      1       },
 388                 { "runasroot",  no_argument,            &do_root,       1       },
 389                 { "version",    no_argument,            &do_version,    1       },
 390                 { "testsuite",  no_argument,            &do_testsuite,  1       },
 391                 { 0, 0, 0, 0 }
 392         };
 393
 394         int index;
 395         while ((c = getopt_long(argc, argv, ":f:", longopts, &index)) != -1)
 396         {
 397                 switch (c)
 398                 {
 399                         case 'f':
 400                                 /* Log filename was set */
 401                                 Config->cmdline.startup_log = optarg;
 402                         break;
 403                         case 'c':
 404                                 /* Config filename was set */
 405                                 ConfigFileName = optarg;
 406                         break;
 407                         case 0:
 408                                 /* getopt_long_only() set an int variable, just keep going */
 409                         break;
 410                         case '?':
 411                                 /* Unknown parameter */
 412                         default:
 413                                 /* Fall through to handle other weird values too */
 414                                 printf("Unknown parameter '%s'\n", argv[optind-1]);
 415                                 printf("Usage: %s [--nofork] [--nolog] [--debug] [--logfile <filename>]\n%*s[--runasroot] [--version] [--config <config>] [--testsuite]\n", argv[0], static_cast<int>(8+strlen(argv[0])), " ");
 416                                 Exit(EXIT_STATUS_ARGV);
 417                         break;
 418                 }
 419         }
 420
 421         if (do_testsuite)
 422                 do_nofork = do_debug = true;
 423
 424         if (do_version)
 425         {
 426                 printf("\n%s r%s\n", VERSION, REVISION);
 427                 Exit(EXIT_STATUS_NOERROR);
 428         }
 429
 430 #ifdef WIN32
 431
 432         // Handle forking
 433         if(!do_nofork)
 434         {
 435                 DWORD ExitCode = WindowsForkStart();
 436                 if(ExitCode)
 437                         exit(ExitCode);
 438         }
 439
 440         // Set up winsock
 441         WSADATA wsadata;
 442         WSAStartup(MAKEWORD(2,0), &wsadata);
 443         ChangeWindowsSpecificPointers();
 444 #endif
 445
 446         /* Set the finished argument values */
 447         Config->cmdline.nofork = do_nofork;
 448         Config->cmdline.forcedebug = do_debug;
 449         Config->cmdline.writelog = !do_nolog;
 450         Config->cmdline.TestSuite = do_testsuite;
 451
 452         if (do_debug)
 453         {
 454                 FileWriter* fw = new FileWriter(stdout);
 455                 FileLogStream* fls = new FileLogStream(DEBUG, fw);
 456                 Logs->AddLogTypes("*", fls, true);
 457         }
 458         else if (!this->OpenLog(argv, argc))
 459         {
 460                 printf("ERROR: Could not open initial logfile %s: %s\n\n", Config->cmdline.startup_log.c_str(), strerror(errno));
 461                 Exit(EXIT_STATUS_LOG);
 462         }
 463
 464         if (!ServerConfig::FileExists(ConfigFileName.c_str()))
 465         {
 466 #ifdef WIN32
 467                 /* Windows can (and defaults to) hide file extensions, so let's play a bit nice for windows users. */
 468                 std::string txtconf = this->ConfigFileName;
 469                 txtconf.append(".txt");
 470
 471                 if (ServerConfig::FileExists(txtconf.c_str()))
 472                 {
 473                         ConfigFileName = txtconf;
 474                 }
 475                 else
 476 #endif
 477                 {
 478                         printf("ERROR: Cannot open config file: %s\nExiting...\n", ConfigFileName.c_str());
 479                         this->Logs->Log("STARTUP",DEFAULT,"Unable to open config file %s", ConfigFileName.c_str());
 480                         Exit(EXIT_STATUS_CONFIG);
 481                 }
 482         }
 483
 484         printf_c("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
 485         printf_c("(C) InspIRCd Development Team.\033[0m\n\n");
 486         printf_c("Developers:\n");
 487         printf_c("\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special\n");
 488         printf_c("\t\033[1;32mpeavey, aquanight, psychon, dz, danieldg\033[0m\n\n");
 489         printf_c("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
 490
 491         this->Modes = new ModeParser;
 492
 493         if (!do_root)
 494                 this->CheckRoot();
 495         else
 496         {
 497                 printf("* WARNING * WARNING * WARNING * WARNING * WARNING * \n\n");
 498                 printf("YOU ARE RUNNING INSPIRCD AS ROOT. THIS IS UNSUPPORTED\n");
 499                 printf("AND IF YOU ARE HACKED, CRACKED, SPINDLED OR MUTILATED\n");
 500                 printf("OR ANYTHING ELSE UNEXPECTED HAPPENS TO YOU OR YOUR\n");
 501                 printf("SERVER, THEN IT IS YOUR OWN FAULT. IF YOU DID NOT MEAN\n");
 502                 printf("TO START INSPIRCD AS ROOT, HIT CTRL+C NOW AND RESTART\n");
 503                 printf("THE PROGRAM AS A NORMAL USER. YOU HAVE BEEN WARNED!\n");
 504                 printf("\nInspIRCd starting in 20 seconds, ctrl+c to abort...\n");
 505                 sleep(20);
 506         }
 507
 508         this->SetSignals();
 509
 510         if (!Config->cmdline.nofork)
 511         {
 512                 if (!this->DaemonSeed())
 513                 {
 514                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 515                         Logs->Log("STARTUP", DEFAULT, "ERROR: could not go into daemon mode. Shutting down.");
 516                         Exit(EXIT_STATUS_FORK);
 517                 }
 518         }
 519
 520         SE->RecoverFromFork();
 521
 522         /* During startup we don't actually initialize this
 523          * in the thread engine.
 524          */
 525         this->Config->Read();
 526         this->Config->Apply(NULL, "");
 527         Logs->OpenFileLogs();
 528
 529         this->Res = new DNS();
 530
 531         /*
 532          * Initialise SID/UID.
 533          * For an explanation as to exactly how this works, and why it works this way, see GetUID().
 534          *   -- w00t
 535          */
 536         if (Config->sid.empty())
 537         {
 538                 // Generate one
 539                 unsigned int sid = 0;
 540                 char sidstr[4];
 541
 542                 for (const char* x = Config->ServerName.c_str(); *x; ++x)
 543                         sid = 5 * sid + *x;
 544                 for (const char* y = Config->ServerDesc.c_str(); *y; ++y)
 545                         sid = 5 * sid + *y;
 546                 sprintf(sidstr, "%03d", sid % 1000);
 547
 548                 Config->sid = sidstr;
 549         }
 550
 551         /* set up fake client again this time with the correct uid */
 552         this->FakeClient = new FakeUser(Config->sid, Config->ServerName);
 553
 554         // Get XLine to do it's thing.
 555         this->XLines->CheckELines();
 556         this->XLines->ApplyLines();
 557
 558         int bounditems = BindPorts(pl);
 559
 560         printf("\n");
 561
 562         this->Modules->LoadAll();
 563
 564         /* Just in case no modules were loaded - fix for bug #101 */
 565         this->BuildISupport();
 566         Config->ApplyDisabledCommands(Config->DisabledCommands);
 567
 568         if (!pl.empty())
 569         {
 570                 printf("\nWARNING: Not all your client ports could be bound --\nstarting anyway with %d of %d client ports bound.\n\n",
 571                         bounditems, bounditems + (int)pl.size());
 572                 printf("The following port(s) failed to bind:\n");
 573                 printf("Hint: Try using a public IP instead of blank or *\n\n");
 574                 int j = 1;
 575                 for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 576                 {
 577                         printf("%d.\tAddress: %s\tReason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 578                 }
 579         }
 580
 581         printf("\nInspIRCd is now running as '%s'[%s] with %d max open sockets\n",
 582                 Config->ServerName.c_str(),Config->GetSID().c_str(), SE->GetMaxFds());
 583
 584 #ifndef WINDOWS
 585         if (!Config->cmdline.nofork)
 586         {
 587                 if (kill(getppid(), SIGTERM) == -1)
 588                 {
 589                         printf("Error killing parent process: %s\n",strerror(errno));
 590                         Logs->Log("STARTUP", DEFAULT, "Error killing parent process: %s",strerror(errno));
 591                 }
 592         }
 593
 594         if (isatty(0) && isatty(1) && isatty(2))
 595         {
 596                 /* We didn't start from a TTY, we must have started from a background process -
 597                  * e.g. we are restarting, or being launched by cron. Dont kill parent, and dont
 598                  * close stdin/stdout
 599                  */
 600                 if ((!do_nofork) && (!do_testsuite))
 601                 {
 602                         fclose(stdin);
 603                         fclose(stderr);
 604                         if (!Config->cmdline.forcedebug)
 605                                 fclose(stdout);
 606                 }
 607                 else
 608                 {
 609                         Logs->Log("STARTUP", DEFAULT,"Keeping pseudo-tty open as we are running in the foreground.");
 610                 }
 611         }
 612 #else
 613         WindowsIPC = new IPC;
 614         if(!Config->nofork)
 615         {
 616                 WindowsForkKillOwner();
 617                 FreeConsole();
 618         }
 619         /* Set win32 service as running, if we are running as a service */
 620         SetServiceRunning();
 621 #endif
 622
 623         Logs->Log("STARTUP", DEFAULT, "Startup complete as '%s'[%s], %d max open sockets", Config->ServerName.c_str(),Config->GetSID().c_str(), SE->GetMaxFds());
 624
 625 #ifndef WIN32
 626         std::string SetUser = Config->ConfValue("security")->getString("runasuser");
 627         std::string SetGroup = Config->ConfValue("security")->getString("runasgroup");
 628         if (!SetGroup.empty())
 629         {
 630                 int ret;
 631
 632                 // setgroups
 633                 ret = setgroups(0, NULL);
 634
 635                 if (ret == -1)
 636                 {
 637                         this->Logs->Log("SETGROUPS", DEFAULT, "setgroups() failed (wtf?): %s", strerror(errno));
 638                         this->QuickExit(0);
 639                 }
 640
 641                 // setgid
 642                 struct group *g;
 643
 644                 errno = 0;
 645                 g = getgrnam(SetGroup.c_str());
 646
 647                 if (!g)
 648                 {
 649                         this->Logs->Log("SETGUID", DEFAULT, "getgrnam() failed (bad user?): %s", strerror(errno));
 650                         this->QuickExit(0);
 651                 }
 652
 653                 ret = setgid(g->gr_gid);
 654
 655                 if (ret == -1)
 656                 {
 657                         this->Logs->Log("SETGUID", DEFAULT, "setgid() failed (bad user?): %s", strerror(errno));
 658                         this->QuickExit(0);
 659                 }
 660         }
 661
 662         if (!SetUser.empty())
 663         {
 664                 // setuid
 665                 struct passwd *u;
 666
 667                 errno = 0;
 668                 u = getpwnam(SetUser.c_str());
 669
 670                 if (!u)
 671                 {
 672                         this->Logs->Log("SETGUID", DEFAULT, "getpwnam() failed (bad user?): %s", strerror(errno));
 673                         this->QuickExit(0);
 674                 }
 675
 676                 int ret = setuid(u->pw_uid);
 677
 678                 if (ret == -1)
 679                 {
 680                         this->Logs->Log("SETGUID", DEFAULT, "setuid() failed (bad user?): %s", strerror(errno));
 681                         this->QuickExit(0);
 682                 }
 683         }
 684 #endif
 685
 686         this->WritePID(Config->PID);
 687 }
 688
 689 void InspIRCd::UpdateTime()
 690 {
 691         clock_gettime(CLOCK_REALTIME, &TIME);
 692 }
 693
 694 int InspIRCd::Run()
 695 {
 696         /* See if we're supposed to be running the test suite rather than entering the mainloop */
 697         if (Config->cmdline.TestSuite)
 698         {
 699                 TestSuite* ts = new TestSuite;
 700                 delete ts;
 701                 Exit(0);
 702         }
 703
 704         UpdateTime();
 705         time_t OLDTIME = TIME.tv_sec;
 706
 707         while (true)
 708         {
 709 #ifndef WIN32
 710                 static rusage ru;
 711 #else
 712                 static time_t uptime;
 713                 static struct tm * stime;
 714                 static char window_title[100];
 715 #endif
 716
 717                 /* Check if there is a config thread which has finished executing but has not yet been freed */
 718                 if (this->ConfigThread && this->ConfigThread->IsDone())
 719                 {
 720                         /* Rehash has completed */
 721                         this->Logs->Log("CONFIG",DEBUG,"Detected ConfigThread exiting, tidying up...");
 722
 723                         this->ConfigThread->Finish();
 724
 725                         ConfigThread->join();
 726                         delete ConfigThread;
 727                         ConfigThread = NULL;
 728                 }
 729
 730                 UpdateTime();
 731
 732                 /* Run background module timers every few seconds
 733                  * (the docs say modules shouldnt rely on accurate
 734                  * timing using this event, so we dont have to
 735                  * time this exactly).
 736                  */
 737                 if (TIME.tv_sec != OLDTIME)
 738                 {
 739                         OLDTIME = TIME.tv_sec;
 740 #ifndef WIN32
 741                         getrusage(RUSAGE_SELF, &ru);
 742                         stats->LastSampled = TIME;
 743                         stats->LastCPU = ru.ru_utime;
 744 #else
 745                         WindowsIPC->Check();
 746 #endif
 747
 748                         /* Allow a buffer of two seconds drift on this so that ntpdate etc dont harass admins */
 749                         if (TIME.tv_sec < OLDTIME - 2)
 750                         {
 751                                 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %lu secs.", (unsigned long)OLDTIME-TIME.tv_sec);
 752                         }
 753                         else if (TIME.tv_sec > OLDTIME + 2)
 754                         {
 755                                 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is jumping FORWARDS! Clock skipped %lu secs.", (unsigned long)TIME.tv_sec - OLDTIME);
 756                         }
 757
 758                         if ((TIME.tv_sec % 3600) == 0)
 759                         {
 760                                 this->RehashUsersAndChans();
 761                                 FOREACH_MOD(I_OnGarbageCollect, OnGarbageCollect());
 762                         }
 763
 764                         Timers->TickTimers(TIME.tv_sec);
 765                         this->DoBackgroundUserStuff();
 766
 767                         if ((TIME.tv_sec % 5) == 0)
 768                         {
 769                                 FOREACH_MOD(I_OnBackgroundTimer,OnBackgroundTimer(TIME.tv_sec));
 770                                 SNO->FlushSnotices();
 771                         }
 772                 }
 773
 774                 /* Call the socket engine to wait on the active
 775                  * file descriptors. The socket engine has everything's
 776                  * descriptors in its list... dns, modules, users,
 777                  * servers... so its nice and easy, just one call.
 778                  * This will cause any read or write events to be
 779                  * dispatched to their handlers.
 780                  */
 781                 this->SE->DispatchTrialWrites();
 782                 this->SE->DispatchEvents();
 783
 784                 /* if any users were quit, take them out */
 785                 GlobalCulls.Apply();
 786                 AtomicActions.Run();
 787
 788                 if (this->s_signal)
 789                 {
 790                         this->SignalHandler(s_signal);
 791                         this->s_signal = 0;
 792                 }
 793         }
 794
 795         return 0;
 796 }
 797
 798 /**********************************************************************************/
 799
 800 /**
 801  * An ircd in five lines! bwahahaha. ahahahahaha. ahahah *cough*.
 802  */
 803
 804 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 805  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 806  * registration timeout maximum seconds)
 807  */
 808 bool InspIRCd::AllModulesReportReady(LocalUser* user)
 809 {
 810         ModResult res;
 811         FIRST_MOD_RESULT(OnCheckReady, res, (user));
 812         return (res == MOD_RES_PASSTHRU);
 813 }
 814
 815 void InspIRCd::SetSignal(int signal)
 816 {
 817         *mysig = signal;
 818 }
 819
 820 /* On posix systems, the flow of the program starts right here, with
 821  * ENTRYPOINT being a #define that defines main(). On Windows, ENTRYPOINT
 822  * defines smain() and the real main() is in the service code under
 823  * win32service.cpp. This allows the service control manager to control
 824  * the process where we are running as a windows service.
 825  */
 826 ENTRYPOINT
 827 {
 828         new InspIRCd(argc, argv);
 829         mysig = &ServerInstance->s_signal;
 830         ServerInstance->Run();
 831         delete ServerInstance;
 832         return 0;
 833 }