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         if (n != NULL)
  87         {
  88                 delete n;
  89                 n = NULL;
  90         }
  91 }
  92
  93 void InspIRCd::Cleanup()
  94 {
  95         if (Config)
  96         {
  97                 for (unsigned int i = 0; i < ports.size(); i++)
  98                 {
  99                         /* This calls the constructor and closes the listening socket */
 100                         delete ports[i];
 101                 }
 102
 103                 ports.clear();
 104         }
 105
 106         /* Close all client sockets, or the new process inherits them */
 107         std::vector<User*>::reverse_iterator i = Users->local_users.rbegin();
 108         while (i != this->Users->local_users.rend())
 109         {
 110                 User* u = *i++;
 111                 Users->QuitUser(u, "Server shutdown");
 112         }
 113
 114         /* We do this more than once, so that any service providers get a
 115          * chance to be unhooked by the modules using them, but then get
 116          * a chance to be removed themsleves.
 117          *
 118          * XXX there may be a better way to do this
 119          */
 120         for (int tries = 0; tries < 4; tries++)
 121         {
 122                 std::vector<std::string> module_names = Modules->GetAllModuleNames(0);
 123                 for (std::vector<std::string>::iterator k = module_names.begin(); k != module_names.end(); ++k)
 124                 {
 125                         /* Unload all modules, so they get a chance to clean up their listeners */
 126                         this->Modules->Unload(k->c_str());
 127                 }
 128                 GlobalCulls.Apply();
 129         }
 130
 131         /* Delete objects dynamically allocated in constructor (destructor would be more appropriate, but we're likely exiting) */
 132         /* Must be deleted before modes as it decrements modelines */
 133         DeleteZero(this->FakeClient);
 134         DeleteZero(this->Users);
 135         DeleteZero(this->Modes);
 136         DeleteZero(this->XLines);
 137         DeleteZero(this->Parser);
 138         DeleteZero(this->stats);
 139         DeleteZero(this->Modules);
 140         DeleteZero(this->BanCache);
 141         DeleteZero(this->SNO);
 142         DeleteZero(this->Config);
 143         DeleteZero(this->Res);
 144         DeleteZero(this->chanlist);
 145         DeleteZero(this->PI);
 146         DeleteZero(this->Threads);
 147         DeleteZero(this->Timers);
 148         DeleteZero(this->SE);
 149         /* Close logging */
 150         this->Logs->CloseLogs();
 151         DeleteZero(this->Logs);
 152 }
 153
 154 void InspIRCd::Restart(const std::string &reason)
 155 {
 156         /* SendError flushes each client's queue,
 157          * regardless of writeability state
 158          */
 159         this->SendError(reason);
 160
 161         /* Figure out our filename (if theyve renamed it, we're boned) */
 162         std::string me;
 163
 164 #ifdef WINDOWS
 165         char module[MAX_PATH];
 166         if (GetModuleFileName(NULL, module, MAX_PATH))
 167                 me = module;
 168 #else
 169         me = Config->MyDir + "/inspircd";
 170 #endif
 171
 172         char** argv = Config->argv;
 173
 174         this->Cleanup();
 175
 176         if (execv(me.c_str(), argv) == -1)
 177         {
 178                 /* Will raise a SIGABRT if not trapped */
 179                 throw CoreException(std::string("Failed to execv()! error: ") + strerror(errno));
 180         }
 181 }
 182
 183 void InspIRCd::ResetMaxBans()
 184 {
 185         for (chan_hash::const_iterator i = chanlist->begin(); i != chanlist->end(); i++)
 186                 i->second->ResetMaxBans();
 187 }
 188
 189 /** Because hash_map doesnt free its buckets when we delete items (this is a 'feature')
 190  * we must occasionally rehash the hash (yes really).
 191  * We do this by copying the entries from the old hash to a new hash, causing all
 192  * empty buckets to be weeded out of the hash. We dont do this on a timer, as its
 193  * very expensive, so instead we do it when the user types /REHASH and expects a
 194  * short delay anyway.
 195  */
 196 void InspIRCd::RehashUsersAndChans()
 197 {
 198         user_hash* old_users = this->Users->clientlist;
 199         user_hash* old_uuid  = this->Users->uuidlist;
 200         chan_hash* old_chans = this->chanlist;
 201
 202         this->Users->clientlist = new user_hash();
 203         this->Users->uuidlist = new user_hash();
 204         this->chanlist = new chan_hash();
 205
 206         for (user_hash::const_iterator n = old_users->begin(); n != old_users->end(); n++)
 207                 this->Users->clientlist->insert(*n);
 208
 209         delete old_users;
 210
 211         for (user_hash::const_iterator n = old_uuid->begin(); n != old_uuid->end(); n++)
 212                 this->Users->uuidlist->insert(*n);
 213
 214         delete old_uuid;
 215
 216         for (chan_hash::const_iterator n = old_chans->begin(); n != old_chans->end(); n++)
 217                 this->chanlist->insert(*n);
 218
 219         delete old_chans;
 220 }
 221
 222 void InspIRCd::SetSignals()
 223 {
 224 #ifndef WIN32
 225         signal(SIGALRM, SIG_IGN);
 226         signal(SIGHUP, InspIRCd::SetSignal);
 227         signal(SIGPIPE, SIG_IGN);
 228         signal(SIGCHLD, SIG_IGN);
 229         /* We want E2BIG not a signal! */
 230         signal(SIGXFSZ, SIG_IGN);
 231 #endif
 232         signal(SIGTERM, InspIRCd::SetSignal);
 233 }
 234
 235 void InspIRCd::QuickExit(int status)
 236 {
 237         exit(0);
 238 }
 239
 240 bool InspIRCd::DaemonSeed()
 241 {
 242 #ifdef WINDOWS
 243         printf_c("InspIRCd Process ID: \033[1;32m%lu\033[0m\n", GetCurrentProcessId());
 244         return true;
 245 #else
 246         signal(SIGTERM, InspIRCd::QuickExit);
 247
 248         int childpid;
 249         if ((childpid = fork ()) < 0)
 250                 return false;
 251         else if (childpid > 0)
 252         {
 253                 /* We wait here for the child process to kill us,
 254                  * so that the shell prompt doesnt come back over
 255                  * the output.
 256                  * Sending a kill with a signal of 0 just checks
 257                  * if the child pid is still around. If theyre not,
 258                  * they threw an error and we should give up.
 259                  */
 260                 while (kill(childpid, 0) != -1)
 261                         sleep(1);
 262                 exit(0);
 263         }
 264         setsid ();
 265         umask (007);
 266         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 267
 268         signal(SIGTERM, InspIRCd::SetSignal);
 269
 270         rlimit rl;
 271         if (getrlimit(RLIMIT_CORE, &rl) == -1)
 272         {
 273                 this->Logs->Log("STARTUP",DEFAULT,"Failed to getrlimit()!");
 274                 return false;
 275         }
 276         else
 277         {
 278                 rl.rlim_cur = rl.rlim_max;
 279                 if (setrlimit(RLIMIT_CORE, &rl) == -1)
 280                         this->Logs->Log("STARTUP",DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 281         }
 282
 283         return true;
 284 #endif
 285 }
 286
 287 void InspIRCd::WritePID(const std::string &filename)
 288 {
 289         std::string fname(filename);
 290         if (fname.empty())
 291                 fname = "data/inspircd.pid";
 292         std::ofstream outfile(fname.c_str());
 293         if (outfile.is_open())
 294         {
 295                 outfile << getpid();
 296                 outfile.close();
 297         }
 298         else
 299         {
 300                 printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
 301                 this->Logs->Log("STARTUP",DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
 302                 Exit(EXIT_STATUS_PID);
 303         }
 304 }
 305
 306 InspIRCd::InspIRCd(int argc, char** argv) :
 307          ConfigFileName("inspircd.conf"),
 308
 309          /* Functor pointer initialisation.
 310           *
 311           * THIS MUST MATCH THE ORDER OF DECLARATION OF THE FUNCTORS, e.g. the methods
 312           * themselves within the class.
 313           */
 314          NICKForced("NICKForced", NULL),
 315          OperQuit("OperQuit", NULL),
 316          IsChannel(&HandleIsChannel),
 317          IsSID(&HandleIsSID),
 318          Rehash(&HandleRehash),
 319          IsNick(&HandleIsNick),
 320          IsIdent(&HandleIsIdent),
 321          FloodQuitUser(&HandleFloodQuitUser)
 322 {
 323 #ifdef WIN32
 324         // Strict, frequent checking of memory on debug builds
 325         _CrtSetDbgFlag ( _CRTDBG_CHECK_ALWAYS_DF | _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
 326
 327         // Avoid erroneous frees on early exit
 328         WindowsIPC = 0;
 329 #endif
 330
 331         ServerInstance = this;
 332
 333         Extensible::Register(&NICKForced);
 334         Extensible::Register(&OperQuit);
 335
 336         FailedPortList pl;
 337         int do_version = 0, do_nofork = 0, do_debug = 0,
 338             do_nolog = 0, do_root = 0, do_testsuite = 0;    /* flag variables */
 339         int c = 0;
 340
 341         // Initialize so that if we exit before proper initialization they're not deleted
 342         this->Logs = 0;
 343         this->Threads = 0;
 344         this->PI = 0;
 345         this->Users = 0;
 346         this->chanlist = 0;
 347         this->Config = 0;
 348         this->SNO = 0;
 349         this->BanCache = 0;
 350         this->Modules = 0;
 351         this->stats = 0;
 352         this->Timers = 0;
 353         this->Parser = 0;
 354         this->XLines = 0;
 355         this->Modes = 0;
 356         this->Res = 0;
 357         this->ConfigThread = NULL;
 358
 359         // Initialise TIME
 360         this->TIME = time(NULL);
 361
 362         // This must be created first, so other parts of Insp can use it while starting up
 363         this->Logs = new LogManager;
 364
 365         SE = CreateSocketEngine();
 366
 367         this->Threads = new ThreadEngine;
 368
 369         /* Default implementation does nothing */
 370         this->PI = new ProtocolInterface;
 371
 372         this->s_signal = 0;
 373
 374         // Create base manager classes early, so nothing breaks
 375         this->Users = new UserManager;
 376
 377         this->Users->unregistered_count = 0;
 378
 379         this->Users->clientlist = new user_hash();
 380         this->Users->uuidlist = new user_hash();
 381         this->chanlist = new chan_hash();
 382
 383         this->Config = new ServerConfig;
 384         this->SNO = new SnomaskManager;
 385         this->BanCache = new BanCacheManager;
 386         this->Modules = new ModuleManager();
 387         this->stats = new serverstats();
 388         this->Timers = new TimerManager;
 389         this->Parser = new CommandParser;
 390         this->XLines = new XLineManager;
 391
 392         this->Config->argv = argv;
 393         this->Config->argc = argc;
 394
 395         this->TIME = this->OLDTIME = this->startup_time = time(NULL);
 396         srand(this->TIME);
 397
 398         *this->LogFileName = 0;
 399
 400         struct option longopts[] =
 401         {
 402                 { "nofork",     no_argument,            &do_nofork,     1       },
 403                 { "logfile",    required_argument,      NULL,           'f'     },
 404                 { "config",     required_argument,      NULL,           'c'     },
 405                 { "debug",      no_argument,            &do_debug,      1       },
 406                 { "nolog",      no_argument,            &do_nolog,      1       },
 407                 { "runasroot",  no_argument,            &do_root,       1       },
 408                 { "version",    no_argument,            &do_version,    1       },
 409                 { "testsuite",  no_argument,            &do_testsuite,  1       },
 410                 { 0, 0, 0, 0 }
 411         };
 412
 413         int index;
 414         while ((c = getopt_long_only(argc, argv, ":f:", longopts, &index)) != -1)
 415         {
 416                 switch (c)
 417                 {
 418                         case 'f':
 419                                 /* Log filename was set */
 420                                 strlcpy(LogFileName, optarg, MAXBUF);
 421                         break;
 422                         case 'c':
 423                                 /* Config filename was set */
 424                                 ConfigFileName = optarg;
 425                         break;
 426                         case 0:
 427                                 /* getopt_long_only() set an int variable, just keep going */
 428                         break;
 429                         case '?':
 430                                 /* Unknown parameter */
 431                         default:
 432                                 /* Fall through to handle other weird values too */
 433                                 printf("Unknown parameter '%s'\n", argv[optind-1]);
 434                                 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])), " ");
 435                                 Exit(EXIT_STATUS_ARGV);
 436                         break;
 437                 }
 438         }
 439
 440         if (do_testsuite)
 441                 do_nofork = do_debug = true;
 442
 443         if (do_version)
 444         {
 445                 printf("\n%s r%s\n", VERSION, REVISION);
 446                 Exit(EXIT_STATUS_NOERROR);
 447         }
 448
 449 #ifdef WIN32
 450
 451         // Handle forking
 452         if(!do_nofork)
 453         {
 454                 DWORD ExitCode = WindowsForkStart();
 455                 if(ExitCode)
 456                         exit(ExitCode);
 457         }
 458
 459         // Set up winsock
 460         WSADATA wsadata;
 461         WSAStartup(MAKEWORD(2,0), &wsadata);
 462         ChangeWindowsSpecificPointers();
 463 #endif
 464
 465         /* Set the finished argument values */
 466         Config->nofork = do_nofork;
 467         Config->forcedebug = do_debug;
 468         Config->writelog = !do_nolog;
 469         Config->TestSuite = do_testsuite;
 470
 471         if (!this->OpenLog(argv, argc))
 472         {
 473                 printf("ERROR: Could not open logfile %s: %s\n\n", Config->logpath.c_str(), strerror(errno));
 474                 Exit(EXIT_STATUS_LOG);
 475         }
 476
 477         if (!ServerConfig::FileExists(ConfigFileName.c_str()))
 478         {
 479 #ifdef WIN32
 480                 /* Windows can (and defaults to) hide file extensions, so let's play a bit nice for windows users. */
 481                 std::string txtconf = this->ConfigFileName;
 482                 txtconf.append(".txt");
 483
 484                 if (ServerConfig::FileExists(txtconf.c_str()))
 485                 {
 486                         ConfigFileName = txtconf;
 487                 }
 488                 else
 489 #endif
 490                 {
 491                         printf("ERROR: Cannot open config file: %s\nExiting...\n", ConfigFileName.c_str());
 492                         this->Logs->Log("STARTUP",DEFAULT,"Unable to open config file %s", ConfigFileName.c_str());
 493                         Exit(EXIT_STATUS_CONFIG);
 494                 }
 495         }
 496
 497         printf_c("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
 498         printf_c("(C) InspIRCd Development Team.\033[0m\n\n");
 499         printf_c("Developers:\n");
 500         printf_c("\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special\n");
 501         printf_c("\t\033[1;32mpeavey, aquanight, psychon, dz, danieldg\033[0m\n\n");
 502         printf_c("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
 503
 504         this->Modes = new ModeParser;
 505
 506         if (!do_root)
 507                 this->CheckRoot();
 508         else
 509         {
 510                 printf("* WARNING * WARNING * WARNING * WARNING * WARNING * \n\n");
 511                 printf("YOU ARE RUNNING INSPIRCD AS ROOT. THIS IS UNSUPPORTED\n");
 512                 printf("AND IF YOU ARE HACKED, CRACKED, SPINDLED OR MUTILATED\n");
 513                 printf("OR ANYTHING ELSE UNEXPECTED HAPPENS TO YOU OR YOUR\n");
 514                 printf("SERVER, THEN IT IS YOUR OWN FAULT. IF YOU DID NOT MEAN\n");
 515                 printf("TO START INSPIRCD AS ROOT, HIT CTRL+C NOW AND RESTART\n");
 516                 printf("THE PROGRAM AS A NORMAL USER. YOU HAVE BEEN WARNED!\n");
 517                 printf("\nInspIRCd starting in 20 seconds, ctrl+c to abort...\n");
 518                 sleep(20);
 519         }
 520
 521         this->SetSignals();
 522
 523         if (!Config->nofork)
 524         {
 525                 if (!this->DaemonSeed())
 526                 {
 527                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 528                         Logs->Log("STARTUP", DEFAULT, "ERROR: could not go into daemon mode. Shutting down.");
 529                         Exit(EXIT_STATUS_FORK);
 530                 }
 531         }
 532
 533         SE->RecoverFromFork();
 534
 535         /* During startup we don't actually initialize this
 536          * in the thread engine.
 537          */
 538         this->Config->Read();
 539         this->Config->Apply(NULL, "");
 540         Logs->OpenFileLogs();
 541
 542         this->Res = new DNS;
 543
 544         /*
 545          * Initialise SID/UID.
 546          * For an explanation as to exactly how this works, and why it works this way, see GetUID().
 547          *   -- w00t
 548          */
 549         if (Config->sid.empty())
 550         {
 551                 // Generate one
 552                 unsigned int sid = 0;
 553                 char sidstr[4];
 554
 555                 for (const char* x = Config->ServerName.c_str(); *x; ++x)
 556                         sid = 5 * sid + *x;
 557                 for (const char* y = Config->ServerDesc.c_str(); *y; ++y)
 558                         sid = 5 * sid + *y;
 559                 sprintf(sidstr, "%03d", sid % 1000);
 560
 561                 Config->sid = sidstr;
 562         }
 563
 564         /* set up fake client again this time with the correct uid */
 565         this->FakeClient = new FakeUser("!");
 566         this->FakeClient->SetFakeServer(Config->ServerName);
 567
 568         // Get XLine to do it's thing.
 569         this->XLines->CheckELines();
 570         this->XLines->ApplyLines();
 571
 572         int bounditems = BindPorts(pl);
 573
 574         printf("\n");
 575
 576         this->Modules->LoadAll();
 577
 578         /* Just in case no modules were loaded - fix for bug #101 */
 579         this->BuildISupport();
 580         Config->ApplyDisabledCommands(Config->DisabledCommands);
 581
 582         if (!pl.empty())
 583         {
 584                 printf("\nWARNING: Not all your client ports could be bound --\nstarting anyway with %d of %d client ports bound.\n\n",
 585                         bounditems, bounditems + (int)pl.size());
 586                 printf("The following port(s) failed to bind:\n");
 587                 printf("Hint: Try using a public IP instead of blank or *\n\n");
 588                 int j = 1;
 589                 for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 590                 {
 591                         printf("%d.\tAddress: %s\tReason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 592                 }
 593         }
 594
 595         printf("\nInspIRCd is now running as '%s'[%s] with %d max open sockets\n",
 596                 Config->ServerName.c_str(),Config->GetSID().c_str(), SE->GetMaxFds());
 597
 598 #ifndef WINDOWS
 599         if (!Config->nofork)
 600         {
 601                 if (kill(getppid(), SIGTERM) == -1)
 602                 {
 603                         printf("Error killing parent process: %s\n",strerror(errno));
 604                         Logs->Log("STARTUP", DEFAULT, "Error killing parent process: %s",strerror(errno));
 605                 }
 606         }
 607
 608         if (isatty(0) && isatty(1) && isatty(2))
 609         {
 610                 /* We didn't start from a TTY, we must have started from a background process -
 611                  * e.g. we are restarting, or being launched by cron. Dont kill parent, and dont
 612                  * close stdin/stdout
 613                  */
 614                 if ((!do_nofork) && (!do_testsuite))
 615                 {
 616                         fclose(stdin);
 617                         fclose(stderr);
 618                         fclose(stdout);
 619                 }
 620                 else
 621                 {
 622                         Logs->Log("STARTUP", DEFAULT,"Keeping pseudo-tty open as we are running in the foreground.");
 623                 }
 624         }
 625 #else
 626         WindowsIPC = new IPC;
 627         if(!Config->nofork)
 628         {
 629                 WindowsForkKillOwner();
 630                 FreeConsole();
 631         }
 632         /* Set win32 service as running, if we are running as a service */
 633         SetServiceRunning();
 634 #endif
 635
 636         Logs->Log("STARTUP", DEFAULT, "Startup complete as '%s'[%s], %d max open sockets", Config->ServerName.c_str(),Config->GetSID().c_str(), SE->GetMaxFds());
 637
 638 #ifndef WIN32
 639         if (!Config->SetGroup.empty())
 640         {
 641                 int ret;
 642
 643                 // setgroups
 644                 ret = setgroups(0, NULL);
 645
 646                 if (ret == -1)
 647                 {
 648                         this->Logs->Log("SETGROUPS", DEFAULT, "setgroups() failed (wtf?): %s", strerror(errno));
 649                         this->QuickExit(0);
 650                 }
 651
 652                 // setgid
 653                 struct group *g;
 654
 655                 errno = 0;
 656                 g = getgrnam(this->Config->SetGroup.c_str());
 657
 658                 if (!g)
 659                 {
 660                         this->Logs->Log("SETGUID", DEFAULT, "getgrnam() failed (bad user?): %s", strerror(errno));
 661                         this->QuickExit(0);
 662                 }
 663
 664                 ret = setgid(g->gr_gid);
 665
 666                 if (ret == -1)
 667                 {
 668                         this->Logs->Log("SETGUID", DEFAULT, "setgid() failed (bad user?): %s", strerror(errno));
 669                         this->QuickExit(0);
 670                 }
 671         }
 672
 673         if (!Config->SetUser.empty())
 674         {
 675                 // setuid
 676                 struct passwd *u;
 677
 678                 errno = 0;
 679                 u = getpwnam(this->Config->SetUser.c_str());
 680
 681                 if (!u)
 682                 {
 683                         this->Logs->Log("SETGUID", DEFAULT, "getpwnam() failed (bad user?): %s", strerror(errno));
 684                         this->QuickExit(0);
 685                 }
 686
 687                 int ret = setuid(u->pw_uid);
 688
 689                 if (ret == -1)
 690                 {
 691                         this->Logs->Log("SETGUID", DEFAULT, "setuid() failed (bad user?): %s", strerror(errno));
 692                         this->QuickExit(0);
 693                 }
 694         }
 695 #endif
 696
 697         this->WritePID(Config->PID);
 698 }
 699
 700 int InspIRCd::Run()
 701 {
 702         /* See if we're supposed to be running the test suite rather than entering the mainloop */
 703         if (Config->TestSuite)
 704         {
 705                 TestSuite* ts = new TestSuite;
 706                 delete ts;
 707                 Exit(0);
 708         }
 709
 710         while (true)
 711         {
 712 #ifndef WIN32
 713                 static rusage ru;
 714 #else
 715                 static time_t uptime;
 716                 static struct tm * stime;
 717                 static char window_title[100];
 718 #endif
 719
 720                 /* Check if there is a config thread which has finished executing but has not yet been freed */
 721                 if (this->ConfigThread && this->ConfigThread->IsDone())
 722                 {
 723                         /* Rehash has completed */
 724                         this->Logs->Log("CONFIG",DEBUG,"Detected ConfigThread exiting, tidying up...");
 725
 726                         this->ConfigThread->Finish();
 727
 728                         ConfigThread->join();
 729                         delete ConfigThread;
 730                         ConfigThread = NULL;
 731                 }
 732
 733                 /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
 734                  * Once per loop iteration is pleanty.
 735                  */
 736                 OLDTIME = TIME;
 737                 TIME = time(NULL);
 738
 739                 /* Run background module timers every few seconds
 740                  * (the docs say modules shouldnt rely on accurate
 741                  * timing using this event, so we dont have to
 742                  * time this exactly).
 743                  */
 744                 if (TIME != OLDTIME)
 745                 {
 746                         /* Allow a buffer of two seconds drift on this so that ntpdate etc dont harass admins */
 747                         if (TIME < OLDTIME - 2)
 748                         {
 749                                 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %lu secs.", (unsigned long)OLDTIME-TIME);
 750                         }
 751                         else if (TIME > OLDTIME + 2)
 752                         {
 753                                 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is jumping FORWARDS! Clock skipped %lu secs.", (unsigned long)TIME - OLDTIME);
 754                         }
 755
 756                         if ((TIME % 3600) == 0)
 757                         {
 758                                 this->RehashUsersAndChans();
 759                                 FOREACH_MOD(I_OnGarbageCollect, OnGarbageCollect());
 760                         }
 761
 762                         Timers->TickTimers(TIME);
 763                         this->DoBackgroundUserStuff();
 764
 765                         if ((TIME % 5) == 0)
 766                         {
 767                                 FOREACH_MOD(I_OnBackgroundTimer,OnBackgroundTimer(TIME));
 768                                 SNO->FlushSnotices();
 769                         }
 770 #ifndef WIN32
 771                         /* Same change as in cmd_stats.cpp, use RUSAGE_SELF rather than '0' -- Om */
 772                         if (!getrusage(RUSAGE_SELF, &ru))
 773                         {
 774                                 gettimeofday(&this->stats->LastSampled, NULL);
 775                                 this->stats->LastCPU = ru.ru_utime;
 776                         }
 777 #else
 778                         WindowsIPC->Check();
 779 #endif
 780                 }
 781
 782                 /* Call the socket engine to wait on the active
 783                  * file descriptors. The socket engine has everything's
 784                  * descriptors in its list... dns, modules, users,
 785                  * servers... so its nice and easy, just one call.
 786                  * This will cause any read or write events to be
 787                  * dispatched to their handlers.
 788                  */
 789                 this->SE->DispatchTrialWrites();
 790                 this->SE->DispatchEvents();
 791
 792                 /* if any users were quit, take them out */
 793                 this->GlobalCulls.Apply();
 794
 795                 if (this->s_signal)
 796                 {
 797                         this->SignalHandler(s_signal);
 798                         this->s_signal = 0;
 799                 }
 800         }
 801
 802         return 0;
 803 }
 804
 805 /**********************************************************************************/
 806
 807 /**
 808  * An ircd in five lines! bwahahaha. ahahahahaha. ahahah *cough*.
 809  */
 810
 811 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 812  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 813  * registration timeout maximum seconds)
 814  */
 815 bool InspIRCd::AllModulesReportReady(User* user)
 816 {
 817         ModResult res;
 818         FIRST_MOD_RESULT(OnCheckReady, res, (user));
 819         return (res == MOD_RES_PASSTHRU);
 820 }
 821
 822 time_t InspIRCd::Time()
 823 {
 824         return TIME;
 825 }
 826
 827 void InspIRCd::SetSignal(int signal)
 828 {
 829         *mysig = signal;
 830 }
 831
 832 /* On posix systems, the flow of the program starts right here, with
 833  * ENTRYPOINT being a #define that defines main(). On Windows, ENTRYPOINT
 834  * defines smain() and the real main() is in the service code under
 835  * win32service.cpp. This allows the service control manager to control
 836  * the process where we are running as a windows service.
 837  */
 838 ENTRYPOINT
 839 {
 840         new InspIRCd(argc, argv);
 841         mysig = &ServerInstance->s_signal;
 842         ServerInstance->Run();
 843         delete ServerInstance;
 844         return 0;
 845 }