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         if (Config)
  94         {
  95                 for (unsigned int i = 0; i < ports.size(); i++)
  96                 {
  97                         /* This calls the constructor and closes the listening socket */
  98                         delete ports[i];
  99                 }
 100
 101                 ports.clear();
 102         }
 103
 104         /* Close all client sockets, or the new process inherits them */
 105         std::vector<User*>::reverse_iterator i = Users->local_users.rbegin();
 106         while (i != this->Users->local_users.rend())
 107         {
 108                 User* u = *i++;
 109                 Users->QuitUser(u, "Server shutdown");
 110         }
 111
 112         GlobalCulls.Apply();
 113         Modules->UnloadAll();
 114
 115         /* Delete objects dynamically allocated in constructor (destructor would be more appropriate, but we're likely exiting) */
 116         /* Must be deleted before modes as it decrements modelines */
 117         DeleteZero(this->FakeClient);
 118         DeleteZero(this->Users);
 119         DeleteZero(this->Modes);
 120         DeleteZero(this->XLines);
 121         DeleteZero(this->Parser);
 122         DeleteZero(this->stats);
 123         DeleteZero(this->Modules);
 124         DeleteZero(this->BanCache);
 125         DeleteZero(this->SNO);
 126         DeleteZero(this->Config);
 127         DeleteZero(this->Res);
 128         DeleteZero(this->chanlist);
 129         DeleteZero(this->PI);
 130         DeleteZero(this->Threads);
 131         DeleteZero(this->Timers);
 132         DeleteZero(this->SE);
 133         /* Close logging */
 134         this->Logs->CloseLogs();
 135         DeleteZero(this->Logs);
 136 }
 137
 138 void InspIRCd::Restart(const std::string &reason)
 139 {
 140         /* SendError flushes each client's queue,
 141          * regardless of writeability state
 142          */
 143         this->SendError(reason);
 144
 145         /* Figure out our filename (if theyve renamed it, we're boned) */
 146         std::string me;
 147
 148 #ifdef WINDOWS
 149         char module[MAX_PATH];
 150         if (GetModuleFileName(NULL, module, MAX_PATH))
 151                 me = module;
 152 #else
 153         me = Config->MyDir + "/inspircd";
 154 #endif
 155
 156         char** argv = Config->argv;
 157
 158         this->Cleanup();
 159
 160         if (execv(me.c_str(), argv) == -1)
 161         {
 162                 /* Will raise a SIGABRT if not trapped */
 163                 throw CoreException(std::string("Failed to execv()! error: ") + strerror(errno));
 164         }
 165 }
 166
 167 void InspIRCd::ResetMaxBans()
 168 {
 169         for (chan_hash::const_iterator i = chanlist->begin(); i != chanlist->end(); i++)
 170                 i->second->ResetMaxBans();
 171 }
 172
 173 /** Because hash_map doesnt free its buckets when we delete items (this is a 'feature')
 174  * we must occasionally rehash the hash (yes really).
 175  * We do this by copying the entries from the old hash to a new hash, causing all
 176  * empty buckets to be weeded out of the hash. We dont do this on a timer, as its
 177  * very expensive, so instead we do it when the user types /REHASH and expects a
 178  * short delay anyway.
 179  */
 180 void InspIRCd::RehashUsersAndChans()
 181 {
 182         user_hash* old_users = this->Users->clientlist;
 183         user_hash* old_uuid  = this->Users->uuidlist;
 184         chan_hash* old_chans = this->chanlist;
 185
 186         this->Users->clientlist = new user_hash();
 187         this->Users->uuidlist = new user_hash();
 188         this->chanlist = new chan_hash();
 189
 190         for (user_hash::const_iterator n = old_users->begin(); n != old_users->end(); n++)
 191                 this->Users->clientlist->insert(*n);
 192
 193         delete old_users;
 194
 195         for (user_hash::const_iterator n = old_uuid->begin(); n != old_uuid->end(); n++)
 196                 this->Users->uuidlist->insert(*n);
 197
 198         delete old_uuid;
 199
 200         for (chan_hash::const_iterator n = old_chans->begin(); n != old_chans->end(); n++)
 201                 this->chanlist->insert(*n);
 202
 203         delete old_chans;
 204 }
 205
 206 void InspIRCd::SetSignals()
 207 {
 208 #ifndef WIN32
 209         signal(SIGALRM, SIG_IGN);
 210         signal(SIGHUP, InspIRCd::SetSignal);
 211         signal(SIGPIPE, SIG_IGN);
 212         signal(SIGCHLD, SIG_IGN);
 213         /* We want E2BIG not a signal! */
 214         signal(SIGXFSZ, SIG_IGN);
 215 #endif
 216         signal(SIGTERM, InspIRCd::SetSignal);
 217 }
 218
 219 void InspIRCd::QuickExit(int status)
 220 {
 221         exit(0);
 222 }
 223
 224 bool InspIRCd::DaemonSeed()
 225 {
 226 #ifdef WINDOWS
 227         printf_c("InspIRCd Process ID: \033[1;32m%lu\033[0m\n", GetCurrentProcessId());
 228         return true;
 229 #else
 230         signal(SIGTERM, InspIRCd::QuickExit);
 231
 232         int childpid;
 233         if ((childpid = fork ()) < 0)
 234                 return false;
 235         else if (childpid > 0)
 236         {
 237                 /* We wait here for the child process to kill us,
 238                  * so that the shell prompt doesnt come back over
 239                  * the output.
 240                  * Sending a kill with a signal of 0 just checks
 241                  * if the child pid is still around. If theyre not,
 242                  * they threw an error and we should give up.
 243                  */
 244                 while (kill(childpid, 0) != -1)
 245                         sleep(1);
 246                 exit(0);
 247         }
 248         setsid ();
 249         umask (007);
 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("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          IsChannel(&HandleIsChannel),
 299          IsSID(&HandleIsSID),
 300          Rehash(&HandleRehash),
 301          IsNick(&HandleIsNick),
 302          IsIdent(&HandleIsIdent),
 303          FloodQuitUser(&HandleFloodQuitUser)
 304 {
 305 #ifdef WIN32
 306         // Strict, frequent checking of memory on debug builds
 307         _CrtSetDbgFlag ( _CRTDBG_CHECK_ALWAYS_DF | _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
 308
 309         // Avoid erroneous frees on early exit
 310         WindowsIPC = 0;
 311 #endif
 312
 313         ServerInstance = this;
 314
 315         Extensions.Register(&NICKForced);
 316         Extensions.Register(&OperQuit);
 317
 318         FailedPortList pl;
 319         int do_version = 0, do_nofork = 0, do_debug = 0,
 320             do_nolog = 0, do_root = 0, do_testsuite = 0;    /* flag variables */
 321         int c = 0;
 322
 323         // Initialize so that if we exit before proper initialization they're not deleted
 324         this->Logs = 0;
 325         this->Threads = 0;
 326         this->PI = 0;
 327         this->Users = 0;
 328         this->chanlist = 0;
 329         this->Config = 0;
 330         this->SNO = 0;
 331         this->BanCache = 0;
 332         this->Modules = 0;
 333         this->stats = 0;
 334         this->Timers = 0;
 335         this->Parser = 0;
 336         this->XLines = 0;
 337         this->Modes = 0;
 338         this->Res = 0;
 339         this->ConfigThread = NULL;
 340
 341         // Initialise TIME
 342         this->TIME = time(NULL);
 343
 344         // This must be created first, so other parts of Insp can use it while starting up
 345         this->Logs = new LogManager;
 346
 347         SE = CreateSocketEngine();
 348
 349         this->Threads = new ThreadEngine;
 350
 351         /* Default implementation does nothing */
 352         this->PI = new ProtocolInterface;
 353
 354         this->s_signal = 0;
 355
 356         // Create base manager classes early, so nothing breaks
 357         this->Users = new UserManager;
 358
 359         this->Users->unregistered_count = 0;
 360
 361         this->Users->clientlist = new user_hash();
 362         this->Users->uuidlist = new user_hash();
 363         this->chanlist = new chan_hash();
 364
 365         this->Config = new ServerConfig;
 366         this->SNO = new SnomaskManager;
 367         this->BanCache = new BanCacheManager;
 368         this->Modules = new ModuleManager();
 369         this->stats = new serverstats();
 370         this->Timers = new TimerManager;
 371         this->Parser = new CommandParser;
 372         this->XLines = new XLineManager;
 373
 374         this->Config->argv = argv;
 375         this->Config->argc = argc;
 376
 377         this->TIME = this->OLDTIME = this->startup_time = time(NULL);
 378         srand(this->TIME);
 379
 380         *this->LogFileName = 0;
 381
 382         struct option longopts[] =
 383         {
 384                 { "nofork",     no_argument,            &do_nofork,     1       },
 385                 { "logfile",    required_argument,      NULL,           'f'     },
 386                 { "config",     required_argument,      NULL,           'c'     },
 387                 { "debug",      no_argument,            &do_debug,      1       },
 388                 { "nolog",      no_argument,            &do_nolog,      1       },
 389                 { "runasroot",  no_argument,            &do_root,       1       },
 390                 { "version",    no_argument,            &do_version,    1       },
 391                 { "testsuite",  no_argument,            &do_testsuite,  1       },
 392                 { 0, 0, 0, 0 }
 393         };
 394
 395         int index;
 396         while ((c = getopt_long_only(argc, argv, ":f:", longopts, &index)) != -1)
 397         {
 398                 switch (c)
 399                 {
 400                         case 'f':
 401                                 /* Log filename was set */
 402                                 strlcpy(LogFileName, optarg, MAXBUF);
 403                         break;
 404                         case 'c':
 405                                 /* Config filename was set */
 406                                 ConfigFileName = optarg;
 407                         break;
 408                         case 0:
 409                                 /* getopt_long_only() set an int variable, just keep going */
 410                         break;
 411                         case '?':
 412                                 /* Unknown parameter */
 413                         default:
 414                                 /* Fall through to handle other weird values too */
 415                                 printf("Unknown parameter '%s'\n", argv[optind-1]);
 416                                 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])), " ");
 417                                 Exit(EXIT_STATUS_ARGV);
 418                         break;
 419                 }
 420         }
 421
 422         if (do_testsuite)
 423                 do_nofork = do_debug = true;
 424
 425         if (do_version)
 426         {
 427                 printf("\n%s r%s\n", VERSION, REVISION);
 428                 Exit(EXIT_STATUS_NOERROR);
 429         }
 430
 431 #ifdef WIN32
 432
 433         // Handle forking
 434         if(!do_nofork)
 435         {
 436                 DWORD ExitCode = WindowsForkStart();
 437                 if(ExitCode)
 438                         exit(ExitCode);
 439         }
 440
 441         // Set up winsock
 442         WSADATA wsadata;
 443         WSAStartup(MAKEWORD(2,0), &wsadata);
 444         ChangeWindowsSpecificPointers();
 445 #endif
 446
 447         /* Set the finished argument values */
 448         Config->nofork = do_nofork;
 449         Config->forcedebug = do_debug;
 450         Config->writelog = !do_nolog;
 451         Config->TestSuite = do_testsuite;
 452
 453         if (!this->OpenLog(argv, argc))
 454         {
 455                 printf("ERROR: Could not open logfile %s: %s\n\n", Config->logpath.c_str(), strerror(errno));
 456                 Exit(EXIT_STATUS_LOG);
 457         }
 458
 459         if (!ServerConfig::FileExists(ConfigFileName.c_str()))
 460         {
 461 #ifdef WIN32
 462                 /* Windows can (and defaults to) hide file extensions, so let's play a bit nice for windows users. */
 463                 std::string txtconf = this->ConfigFileName;
 464                 txtconf.append(".txt");
 465
 466                 if (ServerConfig::FileExists(txtconf.c_str()))
 467                 {
 468                         ConfigFileName = txtconf;
 469                 }
 470                 else
 471 #endif
 472                 {
 473                         printf("ERROR: Cannot open config file: %s\nExiting...\n", ConfigFileName.c_str());
 474                         this->Logs->Log("STARTUP",DEFAULT,"Unable to open config file %s", ConfigFileName.c_str());
 475                         Exit(EXIT_STATUS_CONFIG);
 476                 }
 477         }
 478
 479         printf_c("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
 480         printf_c("(C) InspIRCd Development Team.\033[0m\n\n");
 481         printf_c("Developers:\n");
 482         printf_c("\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special\n");
 483         printf_c("\t\033[1;32mpeavey, aquanight, psychon, dz, danieldg\033[0m\n\n");
 484         printf_c("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
 485
 486         this->Modes = new ModeParser;
 487
 488         if (!do_root)
 489                 this->CheckRoot();
 490         else
 491         {
 492                 printf("* WARNING * WARNING * WARNING * WARNING * WARNING * \n\n");
 493                 printf("YOU ARE RUNNING INSPIRCD AS ROOT. THIS IS UNSUPPORTED\n");
 494                 printf("AND IF YOU ARE HACKED, CRACKED, SPINDLED OR MUTILATED\n");
 495                 printf("OR ANYTHING ELSE UNEXPECTED HAPPENS TO YOU OR YOUR\n");
 496                 printf("SERVER, THEN IT IS YOUR OWN FAULT. IF YOU DID NOT MEAN\n");
 497                 printf("TO START INSPIRCD AS ROOT, HIT CTRL+C NOW AND RESTART\n");
 498                 printf("THE PROGRAM AS A NORMAL USER. YOU HAVE BEEN WARNED!\n");
 499                 printf("\nInspIRCd starting in 20 seconds, ctrl+c to abort...\n");
 500                 sleep(20);
 501         }
 502
 503         this->SetSignals();
 504
 505         if (!Config->nofork)
 506         {
 507                 if (!this->DaemonSeed())
 508                 {
 509                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 510                         Logs->Log("STARTUP", DEFAULT, "ERROR: could not go into daemon mode. Shutting down.");
 511                         Exit(EXIT_STATUS_FORK);
 512                 }
 513         }
 514
 515         SE->RecoverFromFork();
 516
 517         /* During startup we don't actually initialize this
 518          * in the thread engine.
 519          */
 520         this->Config->Read();
 521         this->Config->Apply(NULL, "");
 522         Logs->OpenFileLogs();
 523
 524         this->Res = new DNS;
 525
 526         /*
 527          * Initialise SID/UID.
 528          * For an explanation as to exactly how this works, and why it works this way, see GetUID().
 529          *   -- w00t
 530          */
 531         if (Config->sid.empty())
 532         {
 533                 // Generate one
 534                 unsigned int sid = 0;
 535                 char sidstr[4];
 536
 537                 for (const char* x = Config->ServerName.c_str(); *x; ++x)
 538                         sid = 5 * sid + *x;
 539                 for (const char* y = Config->ServerDesc.c_str(); *y; ++y)
 540                         sid = 5 * sid + *y;
 541                 sprintf(sidstr, "%03d", sid % 1000);
 542
 543                 Config->sid = sidstr;
 544         }
 545
 546         /* set up fake client again this time with the correct uid */
 547         this->FakeClient = new FakeUser("!");
 548         this->FakeClient->SetFakeServer(Config->ServerName);
 549
 550         // Get XLine to do it's thing.
 551         this->XLines->CheckELines();
 552         this->XLines->ApplyLines();
 553
 554         int bounditems = BindPorts(pl);
 555
 556         printf("\n");
 557
 558         this->Modules->LoadAll();
 559
 560         /* Just in case no modules were loaded - fix for bug #101 */
 561         this->BuildISupport();
 562         Config->ApplyDisabledCommands(Config->DisabledCommands);
 563
 564         if (!pl.empty())
 565         {
 566                 printf("\nWARNING: Not all your client ports could be bound --\nstarting anyway with %d of %d client ports bound.\n\n",
 567                         bounditems, bounditems + (int)pl.size());
 568                 printf("The following port(s) failed to bind:\n");
 569                 printf("Hint: Try using a public IP instead of blank or *\n\n");
 570                 int j = 1;
 571                 for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 572                 {
 573                         printf("%d.\tAddress: %s\tReason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 574                 }
 575         }
 576
 577         printf("\nInspIRCd is now running as '%s'[%s] with %d max open sockets\n",
 578                 Config->ServerName.c_str(),Config->GetSID().c_str(), SE->GetMaxFds());
 579
 580 #ifndef WINDOWS
 581         if (!Config->nofork)
 582         {
 583                 if (kill(getppid(), SIGTERM) == -1)
 584                 {
 585                         printf("Error killing parent process: %s\n",strerror(errno));
 586                         Logs->Log("STARTUP", DEFAULT, "Error killing parent process: %s",strerror(errno));
 587                 }
 588         }
 589
 590         if (isatty(0) && isatty(1) && isatty(2))
 591         {
 592                 /* We didn't start from a TTY, we must have started from a background process -
 593                  * e.g. we are restarting, or being launched by cron. Dont kill parent, and dont
 594                  * close stdin/stdout
 595                  */
 596                 if ((!do_nofork) && (!do_testsuite))
 597                 {
 598                         fclose(stdin);
 599                         fclose(stderr);
 600                         fclose(stdout);
 601                 }
 602                 else
 603                 {
 604                         Logs->Log("STARTUP", DEFAULT,"Keeping pseudo-tty open as we are running in the foreground.");
 605                 }
 606         }
 607 #else
 608         WindowsIPC = new IPC;
 609         if(!Config->nofork)
 610         {
 611                 WindowsForkKillOwner();
 612                 FreeConsole();
 613         }
 614         /* Set win32 service as running, if we are running as a service */
 615         SetServiceRunning();
 616 #endif
 617
 618         Logs->Log("STARTUP", DEFAULT, "Startup complete as '%s'[%s], %d max open sockets", Config->ServerName.c_str(),Config->GetSID().c_str(), SE->GetMaxFds());
 619
 620 #ifndef WIN32
 621         if (!Config->SetGroup.empty())
 622         {
 623                 int ret;
 624
 625                 // setgroups
 626                 ret = setgroups(0, NULL);
 627
 628                 if (ret == -1)
 629                 {
 630                         this->Logs->Log("SETGROUPS", DEFAULT, "setgroups() failed (wtf?): %s", strerror(errno));
 631                         this->QuickExit(0);
 632                 }
 633
 634                 // setgid
 635                 struct group *g;
 636
 637                 errno = 0;
 638                 g = getgrnam(this->Config->SetGroup.c_str());
 639
 640                 if (!g)
 641                 {
 642                         this->Logs->Log("SETGUID", DEFAULT, "getgrnam() failed (bad user?): %s", strerror(errno));
 643                         this->QuickExit(0);
 644                 }
 645
 646                 ret = setgid(g->gr_gid);
 647
 648                 if (ret == -1)
 649                 {
 650                         this->Logs->Log("SETGUID", DEFAULT, "setgid() failed (bad user?): %s", strerror(errno));
 651                         this->QuickExit(0);
 652                 }
 653         }
 654
 655         if (!Config->SetUser.empty())
 656         {
 657                 // setuid
 658                 struct passwd *u;
 659
 660                 errno = 0;
 661                 u = getpwnam(this->Config->SetUser.c_str());
 662
 663                 if (!u)
 664                 {
 665                         this->Logs->Log("SETGUID", DEFAULT, "getpwnam() failed (bad user?): %s", strerror(errno));
 666                         this->QuickExit(0);
 667                 }
 668
 669                 int ret = setuid(u->pw_uid);
 670
 671                 if (ret == -1)
 672                 {
 673                         this->Logs->Log("SETGUID", DEFAULT, "setuid() failed (bad user?): %s", strerror(errno));
 674                         this->QuickExit(0);
 675                 }
 676         }
 677 #endif
 678
 679         this->WritePID(Config->PID);
 680 }
 681
 682 int InspIRCd::Run()
 683 {
 684         /* See if we're supposed to be running the test suite rather than entering the mainloop */
 685         if (Config->TestSuite)
 686         {
 687                 TestSuite* ts = new TestSuite;
 688                 delete ts;
 689                 Exit(0);
 690         }
 691
 692         while (true)
 693         {
 694 #ifndef WIN32
 695                 static rusage ru;
 696 #else
 697                 static time_t uptime;
 698                 static struct tm * stime;
 699                 static char window_title[100];
 700 #endif
 701
 702                 /* Check if there is a config thread which has finished executing but has not yet been freed */
 703                 if (this->ConfigThread && this->ConfigThread->IsDone())
 704                 {
 705                         /* Rehash has completed */
 706                         this->Logs->Log("CONFIG",DEBUG,"Detected ConfigThread exiting, tidying up...");
 707
 708                         this->ConfigThread->Finish();
 709
 710                         ConfigThread->join();
 711                         delete ConfigThread;
 712                         ConfigThread = NULL;
 713                 }
 714
 715                 /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
 716                  * Once per loop iteration is pleanty.
 717                  */
 718                 OLDTIME = TIME;
 719                 TIME = time(NULL);
 720
 721                 /* Run background module timers every few seconds
 722                  * (the docs say modules shouldnt rely on accurate
 723                  * timing using this event, so we dont have to
 724                  * time this exactly).
 725                  */
 726                 if (TIME != OLDTIME)
 727                 {
 728                         /* Allow a buffer of two seconds drift on this so that ntpdate etc dont harass admins */
 729                         if (TIME < OLDTIME - 2)
 730                         {
 731                                 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %lu secs.", (unsigned long)OLDTIME-TIME);
 732                         }
 733                         else if (TIME > OLDTIME + 2)
 734                         {
 735                                 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is jumping FORWARDS! Clock skipped %lu secs.", (unsigned long)TIME - OLDTIME);
 736                         }
 737
 738                         if ((TIME % 3600) == 0)
 739                         {
 740                                 this->RehashUsersAndChans();
 741                                 FOREACH_MOD(I_OnGarbageCollect, OnGarbageCollect());
 742                         }
 743
 744                         Timers->TickTimers(TIME);
 745                         this->DoBackgroundUserStuff();
 746
 747                         if ((TIME % 5) == 0)
 748                         {
 749                                 FOREACH_MOD(I_OnBackgroundTimer,OnBackgroundTimer(TIME));
 750                                 SNO->FlushSnotices();
 751                         }
 752 #ifndef WIN32
 753                         /* Same change as in cmd_stats.cpp, use RUSAGE_SELF rather than '0' -- Om */
 754                         if (!getrusage(RUSAGE_SELF, &ru))
 755                         {
 756                                 gettimeofday(&this->stats->LastSampled, NULL);
 757                                 this->stats->LastCPU = ru.ru_utime;
 758                         }
 759 #else
 760                         WindowsIPC->Check();
 761 #endif
 762                 }
 763
 764                 /* Call the socket engine to wait on the active
 765                  * file descriptors. The socket engine has everything's
 766                  * descriptors in its list... dns, modules, users,
 767                  * servers... so its nice and easy, just one call.
 768                  * This will cause any read or write events to be
 769                  * dispatched to their handlers.
 770                  */
 771                 this->SE->DispatchTrialWrites();
 772                 this->SE->DispatchEvents();
 773
 774                 /* if any users were quit, take them out */
 775                 GlobalCulls.Apply();
 776                 AtomicActions.Run();
 777
 778                 if (this->s_signal)
 779                 {
 780                         this->SignalHandler(s_signal);
 781                         this->s_signal = 0;
 782                 }
 783         }
 784
 785         return 0;
 786 }
 787
 788 /**********************************************************************************/
 789
 790 /**
 791  * An ircd in five lines! bwahahaha. ahahahahaha. ahahah *cough*.
 792  */
 793
 794 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 795  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 796  * registration timeout maximum seconds)
 797  */
 798 bool InspIRCd::AllModulesReportReady(User* user)
 799 {
 800         ModResult res;
 801         FIRST_MOD_RESULT(OnCheckReady, res, (user));
 802         return (res == MOD_RES_PASSTHRU);
 803 }
 804
 805 time_t InspIRCd::Time()
 806 {
 807         return TIME;
 808 }
 809
 810 void InspIRCd::SetSignal(int signal)
 811 {
 812         *mysig = signal;
 813 }
 814
 815 /* On posix systems, the flow of the program starts right here, with
 816  * ENTRYPOINT being a #define that defines main(). On Windows, ENTRYPOINT
 817  * defines smain() and the real main() is in the service code under
 818  * win32service.cpp. This allows the service control manager to control
 819  * the process where we are running as a windows service.
 820  */
 821 ENTRYPOINT
 822 {
 823         new InspIRCd(argc, argv);
 824         mysig = &ServerInstance->s_signal;
 825         ServerInstance->Run();
 826         delete ServerInstance;
 827         return 0;
 828 }