src/inspircd.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2009 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         umask (007);
 251         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 252
 253         signal(SIGTERM, InspIRCd::SetSignal);
 254
 255         rlimit rl;
 256         if (getrlimit(RLIMIT_CORE, &rl) == -1)
 257         {
 258                 this->Logs->Log("STARTUP",DEFAULT,"Failed to getrlimit()!");
 259                 return false;
 260         }
 261         rl.rlim_cur = rl.rlim_max;
 262
 263         if (setrlimit(RLIMIT_CORE, &rl) == -1)
 264                         this->Logs->Log("STARTUP",DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 265
 266         return true;
 267 #endif
 268 }
 269
 270 void InspIRCd::WritePID(const std::string &filename)
 271 {
 272         std::string fname(filename);
 273         if (fname.empty())
 274                 fname = "data/inspircd.pid";
 275         std::ofstream outfile(fname.c_str());
 276         if (outfile.is_open())
 277         {
 278                 outfile << getpid();
 279                 outfile.close();
 280         }
 281         else
 282         {
 283                 printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
 284                 this->Logs->Log("STARTUP",DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
 285                 Exit(EXIT_STATUS_PID);
 286         }
 287 }
 288
 289 InspIRCd::InspIRCd(int argc, char** argv) :
 290          ConfigFileName("conf/inspircd.conf"),
 291
 292          /* Functor pointer initialisation.
 293           *
 294           * THIS MUST MATCH THE ORDER OF DECLARATION OF THE FUNCTORS, e.g. the methods
 295           * themselves within the class.
 296           */
 297          NICKForced("NICKForced", NULL),
 298          OperQuit("OperQuit", NULL),
 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         this->TIME = this->OLDTIME = this->startup_time = time(NULL);
 344
 345         // This must be created first, so other parts of Insp can use it while starting up
 346         this->Logs = new LogManager;
 347
 348         SE = CreateSocketEngine();
 349
 350         this->Threads = new ThreadEngine;
 351
 352         /* Default implementation does nothing */
 353         this->PI = new ProtocolInterface;
 354
 355         this->s_signal = 0;
 356
 357         // Create base manager classes early, so nothing breaks
 358         this->Users = new UserManager;
 359
 360         this->Users->unregistered_count = 0;
 361
 362         this->Users->clientlist = new user_hash();
 363         this->Users->uuidlist = new user_hash();
 364         this->chanlist = new chan_hash();
 365
 366         this->Config = new ServerConfig;
 367         this->SNO = new SnomaskManager;
 368         this->BanCache = new BanCacheManager;
 369         this->Modules = new ModuleManager();
 370         this->stats = new serverstats();
 371         this->Timers = new TimerManager;
 372         this->Parser = new CommandParser;
 373         this->XLines = new XLineManager;
 374
 375         this->Config->cmdline.argv = argv;
 376         this->Config->cmdline.argc = argc;
 377
 378         srand(this->TIME);
 379
 380         struct option longopts[] =
 381         {
 382                 { "nofork",     no_argument,            &do_nofork,     1       },
 383                 { "logfile",    required_argument,      NULL,           'f'     },
 384                 { "config",     required_argument,      NULL,           'c'     },
 385                 { "debug",      no_argument,            &do_debug,      1       },
 386                 { "nolog",      no_argument,            &do_nolog,      1       },
 387                 { "runasroot",  no_argument,            &do_root,       1       },
 388                 { "version",    no_argument,            &do_version,    1       },
 389                 { "testsuite",  no_argument,            &do_testsuite,  1       },
 390                 { 0, 0, 0, 0 }
 391         };
 392
 393         int index;
 394         while ((c = getopt_long_only(argc, argv, ":f:", longopts, &index)) != -1)
 395         {
 396                 switch (c)
 397                 {
 398                         case 'f':
 399                                 /* Log filename was set */
 400                                 Config->cmdline.startup_log = optarg;
 401                         break;
 402                         case 'c':
 403                                 /* Config filename was set */
 404                                 ConfigFileName = optarg;
 405                         break;
 406                         case 0:
 407                                 /* getopt_long_only() set an int variable, just keep going */
 408                         break;
 409                         case '?':
 410                                 /* Unknown parameter */
 411                         default:
 412                                 /* Fall through to handle other weird values too */
 413                                 printf("Unknown parameter '%s'\n", argv[optind-1]);
 414                                 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])), " ");
 415                                 Exit(EXIT_STATUS_ARGV);
 416                         break;
 417                 }
 418         }
 419
 420         if (do_testsuite)
 421                 do_nofork = do_debug = true;
 422
 423         if (do_version)
 424         {
 425                 printf("\n%s r%s\n", VERSION, REVISION);
 426                 Exit(EXIT_STATUS_NOERROR);
 427         }
 428
 429 #ifdef WIN32
 430
 431         // Handle forking
 432         if(!do_nofork)
 433         {
 434                 DWORD ExitCode = WindowsForkStart();
 435                 if(ExitCode)
 436                         exit(ExitCode);
 437         }
 438
 439         // Set up winsock
 440         WSADATA wsadata;
 441         WSAStartup(MAKEWORD(2,0), &wsadata);
 442         ChangeWindowsSpecificPointers();
 443 #endif
 444
 445         /* Set the finished argument values */
 446         Config->cmdline.nofork = do_nofork;
 447         Config->cmdline.forcedebug = do_debug;
 448         Config->cmdline.writelog = !do_nolog;
 449         Config->cmdline.TestSuite = do_testsuite;
 450
 451         if (do_debug)
 452         {
 453                 FileWriter* fw = new FileWriter(stdout);
 454                 FileLogStream* fls = new FileLogStream(DEBUG, fw);
 455                 Logs->AddLogTypes("*", fls, true);
 456         }
 457         else if (!this->OpenLog(argv, argc))
 458         {
 459                 printf("ERROR: Could not open initial logfile %s: %s\n\n", Config->cmdline.startup_log.c_str(), strerror(errno));
 460                 Exit(EXIT_STATUS_LOG);
 461         }
 462
 463         if (!ServerConfig::FileExists(ConfigFileName.c_str()))
 464         {
 465 #ifdef WIN32
 466                 /* Windows can (and defaults to) hide file extensions, so let's play a bit nice for windows users. */
 467                 std::string txtconf = this->ConfigFileName;
 468                 txtconf.append(".txt");
 469
 470                 if (ServerConfig::FileExists(txtconf.c_str()))
 471                 {
 472                         ConfigFileName = txtconf;
 473                 }
 474                 else
 475 #endif
 476                 {
 477                         printf("ERROR: Cannot open config file: %s\nExiting...\n", ConfigFileName.c_str());
 478                         this->Logs->Log("STARTUP",DEFAULT,"Unable to open config file %s", ConfigFileName.c_str());
 479                         Exit(EXIT_STATUS_CONFIG);
 480                 }
 481         }
 482
 483         printf_c("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
 484         printf_c("(C) InspIRCd Development Team.\033[0m\n\n");
 485         printf_c("Developers:\n");
 486         printf_c("\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special\n");
 487         printf_c("\t\033[1;32mpeavey, aquanight, psychon, dz, danieldg\033[0m\n\n");
 488         printf_c("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
 489
 490         this->Modes = new ModeParser;
 491
 492         if (!do_root)
 493                 this->CheckRoot();
 494         else
 495         {
 496                 printf("* WARNING * WARNING * WARNING * WARNING * WARNING * \n\n");
 497                 printf("YOU ARE RUNNING INSPIRCD AS ROOT. THIS IS UNSUPPORTED\n");
 498                 printf("AND IF YOU ARE HACKED, CRACKED, SPINDLED OR MUTILATED\n");
 499                 printf("OR ANYTHING ELSE UNEXPECTED HAPPENS TO YOU OR YOUR\n");
 500                 printf("SERVER, THEN IT IS YOUR OWN FAULT. IF YOU DID NOT MEAN\n");
 501                 printf("TO START INSPIRCD AS ROOT, HIT CTRL+C NOW AND RESTART\n");
 502                 printf("THE PROGRAM AS A NORMAL USER. YOU HAVE BEEN WARNED!\n");
 503                 printf("\nInspIRCd starting in 20 seconds, ctrl+c to abort...\n");
 504                 sleep(20);
 505         }
 506
 507         this->SetSignals();
 508
 509         if (!Config->cmdline.nofork)
 510         {
 511                 if (!this->DaemonSeed())
 512                 {
 513                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 514                         Logs->Log("STARTUP", DEFAULT, "ERROR: could not go into daemon mode. Shutting down.");
 515                         Exit(EXIT_STATUS_FORK);
 516                 }
 517         }
 518
 519         SE->RecoverFromFork();
 520
 521         /* During startup we don't actually initialize this
 522          * in the thread engine.
 523          */
 524         this->Config->Read();
 525         this->Config->Apply(NULL, "");
 526         Logs->OpenFileLogs();
 527
 528         this->Res = new DNS();
 529
 530         /*
 531          * Initialise SID/UID.
 532          * For an explanation as to exactly how this works, and why it works this way, see GetUID().
 533          *   -- w00t
 534          */
 535         if (Config->sid.empty())
 536         {
 537                 // Generate one
 538                 unsigned int sid = 0;
 539                 char sidstr[4];
 540
 541                 for (const char* x = Config->ServerName.c_str(); *x; ++x)
 542                         sid = 5 * sid + *x;
 543                 for (const char* y = Config->ServerDesc.c_str(); *y; ++y)
 544                         sid = 5 * sid + *y;
 545                 sprintf(sidstr, "%03d", sid % 1000);
 546
 547                 Config->sid = sidstr;
 548         }
 549
 550         /* set up fake client again this time with the correct uid */
 551         this->FakeClient = new FakeUser(Config->sid, Config->ServerName);
 552
 553         // Get XLine to do it's thing.
 554         this->XLines->CheckELines();
 555         this->XLines->ApplyLines();
 556
 557         int bounditems = BindPorts(pl);
 558
 559         printf("\n");
 560
 561         this->Modules->LoadAll();
 562
 563         /* Just in case no modules were loaded - fix for bug #101 */
 564         this->BuildISupport();
 565         Config->ApplyDisabledCommands(Config->DisabledCommands);
 566
 567         if (!pl.empty())
 568         {
 569                 printf("\nWARNING: Not all your client ports could be bound --\nstarting anyway with %d of %d client ports bound.\n\n",
 570                         bounditems, bounditems + (int)pl.size());
 571                 printf("The following port(s) failed to bind:\n");
 572                 printf("Hint: Try using a public IP instead of blank or *\n\n");
 573                 int j = 1;
 574                 for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 575                 {
 576                         printf("%d.\tAddress: %s\tReason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 577                 }
 578         }
 579
 580         printf("\nInspIRCd is now running as '%s'[%s] with %d max open sockets\n",
 581                 Config->ServerName.c_str(),Config->GetSID().c_str(), SE->GetMaxFds());
 582
 583 #ifndef WINDOWS
 584         if (!Config->cmdline.nofork)
 585         {
 586                 if (kill(getppid(), SIGTERM) == -1)
 587                 {
 588                         printf("Error killing parent process: %s\n",strerror(errno));
 589                         Logs->Log("STARTUP", DEFAULT, "Error killing parent process: %s",strerror(errno));
 590                 }
 591         }
 592
 593         if (isatty(0) && isatty(1) && isatty(2))
 594         {
 595                 /* We didn't start from a TTY, we must have started from a background process -
 596                  * e.g. we are restarting, or being launched by cron. Dont kill parent, and dont
 597                  * close stdin/stdout
 598                  */
 599                 if ((!do_nofork) && (!do_testsuite))
 600                 {
 601                         fclose(stdin);
 602                         fclose(stderr);
 603                         if (!Config->cmdline.forcedebug)
 604                                 fclose(stdout);
 605                 }
 606                 else
 607                 {
 608                         Logs->Log("STARTUP", DEFAULT,"Keeping pseudo-tty open as we are running in the foreground.");
 609                 }
 610         }
 611 #else
 612         WindowsIPC = new IPC;
 613         if(!Config->nofork)
 614         {
 615                 WindowsForkKillOwner();
 616                 FreeConsole();
 617         }
 618         /* Set win32 service as running, if we are running as a service */
 619         SetServiceRunning();
 620 #endif
 621
 622         Logs->Log("STARTUP", DEFAULT, "Startup complete as '%s'[%s], %d max open sockets", Config->ServerName.c_str(),Config->GetSID().c_str(), SE->GetMaxFds());
 623
 624 #ifndef WIN32
 625         std::string SetUser = Config->ConfValue("security")->getString("runasuser");
 626         std::string SetGroup = Config->ConfValue("security")->getString("runasgroup");
 627         if (!SetGroup.empty())
 628         {
 629                 int ret;
 630
 631                 // setgroups
 632                 ret = setgroups(0, NULL);
 633
 634                 if (ret == -1)
 635                 {
 636                         this->Logs->Log("SETGROUPS", DEFAULT, "setgroups() failed (wtf?): %s", strerror(errno));
 637                         this->QuickExit(0);
 638                 }
 639
 640                 // setgid
 641                 struct group *g;
 642
 643                 errno = 0;
 644                 g = getgrnam(SetGroup.c_str());
 645
 646                 if (!g)
 647                 {
 648                         this->Logs->Log("SETGUID", DEFAULT, "getgrnam() failed (bad user?): %s", strerror(errno));
 649                         this->QuickExit(0);
 650                 }
 651
 652                 ret = setgid(g->gr_gid);
 653
 654                 if (ret == -1)
 655                 {
 656                         this->Logs->Log("SETGUID", DEFAULT, "setgid() failed (bad user?): %s", strerror(errno));
 657                         this->QuickExit(0);
 658                 }
 659         }
 660
 661         if (!SetUser.empty())
 662         {
 663                 // setuid
 664                 struct passwd *u;
 665
 666                 errno = 0;
 667                 u = getpwnam(SetUser.c_str());
 668
 669                 if (!u)
 670                 {
 671                         this->Logs->Log("SETGUID", DEFAULT, "getpwnam() failed (bad user?): %s", strerror(errno));
 672                         this->QuickExit(0);
 673                 }
 674
 675                 int ret = setuid(u->pw_uid);
 676
 677                 if (ret == -1)
 678                 {
 679                         this->Logs->Log("SETGUID", DEFAULT, "setuid() failed (bad user?): %s", strerror(errno));
 680                         this->QuickExit(0);
 681                 }
 682         }
 683 #endif
 684
 685         this->WritePID(Config->PID);
 686 }
 687
 688 int InspIRCd::Run()
 689 {
 690         /* See if we're supposed to be running the test suite rather than entering the mainloop */
 691         if (Config->cmdline.TestSuite)
 692         {
 693                 TestSuite* ts = new TestSuite;
 694                 delete ts;
 695                 Exit(0);
 696         }
 697
 698         while (true)
 699         {
 700 #ifndef WIN32
 701                 static rusage ru;
 702 #else
 703                 static time_t uptime;
 704                 static struct tm * stime;
 705                 static char window_title[100];
 706 #endif
 707
 708                 /* Check if there is a config thread which has finished executing but has not yet been freed */
 709                 if (this->ConfigThread && this->ConfigThread->IsDone())
 710                 {
 711                         /* Rehash has completed */
 712                         this->Logs->Log("CONFIG",DEBUG,"Detected ConfigThread exiting, tidying up...");
 713
 714                         this->ConfigThread->Finish();
 715
 716                         ConfigThread->join();
 717                         delete ConfigThread;
 718                         ConfigThread = NULL;
 719                 }
 720
 721                 /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
 722                  * Once per loop iteration is pleanty.
 723                  */
 724                 OLDTIME = TIME;
 725                 TIME = time(NULL);
 726
 727                 /* Run background module timers every few seconds
 728                  * (the docs say modules shouldnt rely on accurate
 729                  * timing using this event, so we dont have to
 730                  * time this exactly).
 731                  */
 732                 if (TIME != OLDTIME)
 733                 {
 734                         /* Allow a buffer of two seconds drift on this so that ntpdate etc dont harass admins */
 735                         if (TIME < OLDTIME - 2)
 736                         {
 737                                 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %lu secs.", (unsigned long)OLDTIME-TIME);
 738                         }
 739                         else if (TIME > OLDTIME + 2)
 740                         {
 741                                 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is jumping FORWARDS! Clock skipped %lu secs.", (unsigned long)TIME - OLDTIME);
 742                         }
 743
 744                         if ((TIME % 3600) == 0)
 745                         {
 746                                 this->RehashUsersAndChans();
 747                                 FOREACH_MOD(I_OnGarbageCollect, OnGarbageCollect());
 748                         }
 749
 750                         Timers->TickTimers(TIME);
 751                         this->DoBackgroundUserStuff();
 752
 753                         if ((TIME % 5) == 0)
 754                         {
 755                                 FOREACH_MOD(I_OnBackgroundTimer,OnBackgroundTimer(TIME));
 756                                 SNO->FlushSnotices();
 757                         }
 758 #ifndef WIN32
 759                         /* Same change as in cmd_stats.cpp, use RUSAGE_SELF rather than '0' -- Om */
 760                         if (!getrusage(RUSAGE_SELF, &ru))
 761                         {
 762                                 gettimeofday(&this->stats->LastSampled, NULL);
 763                                 this->stats->LastCPU = ru.ru_utime;
 764                         }
 765 #else
 766                         WindowsIPC->Check();
 767 #endif
 768                 }
 769
 770                 /* Call the socket engine to wait on the active
 771                  * file descriptors. The socket engine has everything's
 772                  * descriptors in its list... dns, modules, users,
 773                  * servers... so its nice and easy, just one call.
 774                  * This will cause any read or write events to be
 775                  * dispatched to their handlers.
 776                  */
 777                 this->SE->DispatchTrialWrites();
 778                 this->SE->DispatchEvents();
 779
 780                 /* if any users were quit, take them out */
 781                 GlobalCulls.Apply();
 782                 AtomicActions.Run();
 783
 784                 if (this->s_signal)
 785                 {
 786                         this->SignalHandler(s_signal);
 787                         this->s_signal = 0;
 788                 }
 789         }
 790
 791         return 0;
 792 }
 793
 794 /**********************************************************************************/
 795
 796 /**
 797  * An ircd in five lines! bwahahaha. ahahahahaha. ahahah *cough*.
 798  */
 799
 800 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 801  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 802  * registration timeout maximum seconds)
 803  */
 804 bool InspIRCd::AllModulesReportReady(LocalUser* user)
 805 {
 806         ModResult res;
 807         FIRST_MOD_RESULT(OnCheckReady, res, (user));
 808         return (res == MOD_RES_PASSTHRU);
 809 }
 810
 811 time_t InspIRCd::Time()
 812 {
 813         return TIME;
 814 }
 815
 816 void InspIRCd::SetSignal(int signal)
 817 {
 818         *mysig = signal;
 819 }
 820
 821 /* On posix systems, the flow of the program starts right here, with
 822  * ENTRYPOINT being a #define that defines main(). On Windows, ENTRYPOINT
 823  * defines smain() and the real main() is in the service code under
 824  * win32service.cpp. This allows the service control manager to control
 825  * the process where we are running as a windows service.
 826  */
 827 ENTRYPOINT
 828 {
 829         new InspIRCd(argc, argv);
 830         mysig = &ServerInstance->s_signal;
 831         ServerInstance->Run();
 832         delete ServerInstance;
 833         return 0;
 834 }