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 /* $Install: src/inspircd $(BINPATH) */
  16 #include "inspircd.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 "inspircd_se_config.h"
  40 #include "socket.h"
  41 #include "command_parse.h"
  42 #include "exitcodes.h"
  43 #include "caller.h"
  44 #include "testsuite.h"
  45
  46 InspIRCd* SI = NULL;
  47 int* mysig = NULL;
  48
  49 /** Seperate from the other casemap tables so that code *can* still exclusively rely on RFC casemapping
  50  * if it must.
  51  *
  52  * This is provided as a pointer so that modules can change it to their custom mapping tables,
  53  * e.g. for national character support.
  54  */
  55 unsigned const char *national_case_insensitive_map = rfc_case_insensitive_map;
  56
  57
  58 /* Moved from exitcodes.h -- due to duplicate symbols -- Burlex
  59  * XXX this is a bit ugly. -- w00t
  60  */
  61 const char* ExitCodes[] =
  62 {
  63                 "No error", /* 0 */
  64                 "DIE command", /* 1 */
  65                 "execv() failed", /* 2 */
  66                 "Internal error", /* 3 */
  67                 "Config file error", /* 4 */
  68                 "Logfile error", /* 5 */
  69                 "POSIX fork failed", /* 6 */
  70                 "Bad commandline parameters", /* 7 */
  71                 "No ports could be bound", /* 8 */
  72                 "Can't write PID file", /* 9 */
  73                 "SocketEngine could not initialize", /* 10 */
  74                 "Refusing to start up as root", /* 11 */
  75                 "Found a <die> tag!", /* 12 */
  76                 "Couldn't load module on startup", /* 13 */
  77                 "Could not create windows forked process", /* 14 */
  78                 "Received SIGTERM", /* 15 */
  79                 "Bad command handler loaded", /* 16 */
  80                 "RegisterServiceCtrlHandler failed", /* 17 */
  81                 "UpdateSCMStatus failed", /* 18 */
  82                 "CreateEvent failed" /* 19 */
  83 };
  84
  85 template<typename T> static void DeleteZero(T* n)
  86 {
  87         if (n != NULL)
  88         {
  89                 delete n;
  90                 n = NULL;
  91         }
  92 }
  93
  94 void InspIRCd::Cleanup()
  95 {
  96         if (Config)
  97         {
  98                 for (unsigned int i = 0; i < ports.size(); i++)
  99                 {
 100                         /* This calls the constructor and closes the listening socket */
 101                         delete ports[i];
 102                 }
 103
 104                 ports.clear();
 105         }
 106
 107         /* Close all client sockets, or the new process inherits them */
 108         for (std::vector<User*>::const_iterator i = this->Users->local_users.begin(); i != this->Users->local_users.end(); i++)
 109         {
 110                 this->Users->QuitUser((*i), "Server shutdown");
 111                 (*i)->CloseSocket();
 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 with 1.2
 119          */
 120         for (int tries = 0; tries < 3; 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         }
 129         /* Remove core commands */
 130         Parser->RemoveCommands("<core>");
 131
 132         /* Cleanup Server Names */
 133         for(servernamelist::iterator itr = servernames.begin(); itr != servernames.end(); ++itr)
 134                 delete (*itr);
 135
 136         /* Delete objects dynamically allocated in constructor (destructor would be more appropriate, but we're likely exiting) */
 137         /* Must be deleted before modes as it decrements modelines */
 138         DeleteZero(this->Users);
 139         DeleteZero(this->Modes);
 140         DeleteZero(this->XLines);
 141         DeleteZero(this->Parser);
 142         DeleteZero(this->stats);
 143         DeleteZero(this->Modules);
 144         DeleteZero(this->BanCache);
 145         DeleteZero(this->SNO);
 146         DeleteZero(this->Config);
 147         DeleteZero(this->Res);
 148         DeleteZero(this->chanlist);
 149         DeleteZero(this->PI);
 150         DeleteZero(this->Threads);
 151         DeleteZero(this->Timers);
 152         /* Close logging */
 153         this->Logs->CloseLogs();
 154         DeleteZero(this->Logs);
 155 }
 156
 157 void InspIRCd::Restart(const std::string &reason)
 158 {
 159         /* SendError flushes each client's queue,
 160          * regardless of writeability state
 161          */
 162         this->SendError(reason);
 163
 164         /* Figure out our filename (if theyve renamed it, we're boned) */
 165         std::string me;
 166
 167 #ifdef WINDOWS
 168         char module[MAX_PATH];
 169         if (GetModuleFileName(NULL, module, MAX_PATH))
 170                 me = module;
 171 #else
 172         me = Config->MyDir + "/inspircd";
 173 #endif
 174
 175         char** argv = Config->argv;
 176
 177         this->Cleanup();
 178
 179         if (execv(me.c_str(), argv) == -1)
 180         {
 181                 /* Will raise a SIGABRT if not trapped */
 182                 throw CoreException(std::string("Failed to execv()! error: ") + strerror(errno));
 183         }
 184 }
 185
 186 void InspIRCd::ResetMaxBans()
 187 {
 188         for (chan_hash::const_iterator i = chanlist->begin(); i != chanlist->end(); i++)
 189                 i->second->ResetMaxBans();
 190 }
 191
 192 /** Because hash_map doesnt free its buckets when we delete items (this is a 'feature')
 193  * we must occasionally rehash the hash (yes really).
 194  * We do this by copying the entries from the old hash to a new hash, causing all
 195  * empty buckets to be weeded out of the hash. We dont do this on a timer, as its
 196  * very expensive, so instead we do it when the user types /REHASH and expects a
 197  * short delay anyway.
 198  */
 199 void InspIRCd::RehashUsersAndChans()
 200 {
 201         user_hash* old_users = this->Users->clientlist;
 202         user_hash* old_uuid  = this->Users->uuidlist;
 203         chan_hash* old_chans = this->chanlist;
 204
 205         this->Users->clientlist = new user_hash();
 206         this->Users->uuidlist = new user_hash();
 207         this->chanlist = new chan_hash();
 208
 209         for (user_hash::const_iterator n = old_users->begin(); n != old_users->end(); n++)
 210                 this->Users->clientlist->insert(*n);
 211
 212         delete old_users;
 213
 214         for (user_hash::const_iterator n = old_uuid->begin(); n != old_uuid->end(); n++)
 215                 this->Users->uuidlist->insert(*n);
 216
 217         delete old_uuid;
 218
 219         for (chan_hash::const_iterator n = old_chans->begin(); n != old_chans->end(); n++)
 220                 this->chanlist->insert(*n);
 221
 222         delete old_chans;
 223 }
 224
 225 void InspIRCd::SetSignals()
 226 {
 227 #ifndef WIN32
 228         signal(SIGALRM, SIG_IGN);
 229         signal(SIGHUP, InspIRCd::SetSignal);
 230         signal(SIGPIPE, SIG_IGN);
 231         signal(SIGCHLD, SIG_IGN);
 232         /* We want E2BIG not a signal! */
 233         signal(SIGXFSZ, SIG_IGN);
 234 #endif
 235         signal(SIGTERM, InspIRCd::SetSignal);
 236 }
 237
 238 void InspIRCd::QuickExit(int status)
 239 {
 240         exit(0);
 241 }
 242
 243 bool InspIRCd::DaemonSeed()
 244 {
 245 #ifdef WINDOWS
 246         printf_c("InspIRCd Process ID: \033[1;32m%lu\033[0m\n", GetCurrentProcessId());
 247         return true;
 248 #else
 249         signal(SIGTERM, InspIRCd::QuickExit);
 250
 251         int childpid;
 252         if ((childpid = fork ()) < 0)
 253                 return false;
 254         else if (childpid > 0)
 255         {
 256                 /* We wait here for the child process to kill us,
 257                  * so that the shell prompt doesnt come back over
 258                  * the output.
 259                  * Sending a kill with a signal of 0 just checks
 260                  * if the child pid is still around. If theyre not,
 261                  * they threw an error and we should give up.
 262                  */
 263                 while (kill(childpid, 0) != -1)
 264                         sleep(1);
 265                 exit(0);
 266         }
 267         setsid ();
 268         umask (007);
 269         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 270
 271         signal(SIGTERM, InspIRCd::SetSignal);
 272
 273         rlimit rl;
 274         if (getrlimit(RLIMIT_CORE, &rl) == -1)
 275         {
 276                 this->Logs->Log("STARTUP",DEFAULT,"Failed to getrlimit()!");
 277                 return false;
 278         }
 279         else
 280         {
 281                 rl.rlim_cur = rl.rlim_max;
 282                 if (setrlimit(RLIMIT_CORE, &rl) == -1)
 283                         this->Logs->Log("STARTUP",DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 284         }
 285
 286         return true;
 287 #endif
 288 }
 289
 290 void InspIRCd::WritePID(const std::string &filename)
 291 {
 292         std::string fname = (filename.empty() ? "inspircd.pid" : filename);
 293         std::replace(fname.begin(), fname.end(), '\\', '/');
 294         if ((fname[0] != '/') && (!Config->StartsWithWindowsDriveLetter(filename)))
 295         {
 296                 std::string::size_type pos;
 297                 std::string confpath = this->ConfigFileName;
 298                 if ((pos = confpath.rfind("/")) != std::string::npos)
 299                 {
 300                         /* Leaves us with just the path */
 301                         fname = confpath.substr(0, pos) + std::string("/") + fname;
 302                 }
 303         }
 304         std::ofstream outfile(fname.c_str());
 305         if (outfile.is_open())
 306         {
 307                 outfile << getpid();
 308                 outfile.close();
 309         }
 310         else
 311         {
 312                 printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
 313                 this->Logs->Log("STARTUP",DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
 314                 Exit(EXIT_STATUS_PID);
 315         }
 316 }
 317
 318 InspIRCd::InspIRCd(int argc, char** argv)
 319         : GlobalCulls(this),
 320
 321          /* Functor initialisation. Note that the ordering here is very important.
 322           *
 323           * THIS MUST MATCH ORDER OF DECLARATION OF THE HandleWhateverFunc classes
 324           * within class InspIRCd.
 325           */
 326          HandleProcessUser(this),
 327          HandleIsNick(this),
 328          HandleIsIdent(this),
 329          HandleFloodQuitUser(this),
 330          HandleIsChannel(this),
 331          HandleIsSID(this),
 332          HandleRehash(this),
 333
 334          /* Functor pointer initialisation. Must match the order of the list above
 335           *
 336           * THIS MUST MATCH THE ORDER OF DECLARATION OF THE FUNCTORS, e.g. the methods
 337           * themselves within the class.
 338           */
 339          ProcessUser(&HandleProcessUser),
 340          IsChannel(&HandleIsChannel),
 341          IsSID(&HandleIsSID),
 342          Rehash(&HandleRehash),
 343          IsNick(&HandleIsNick),
 344          IsIdent(&HandleIsIdent),
 345          FloodQuitUser(&HandleFloodQuitUser)
 346
 347 {
 348 #ifdef WIN32
 349         // Strict, frequent checking of memory on debug builds
 350         _CrtSetDbgFlag ( _CRTDBG_CHECK_ALWAYS_DF | _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
 351
 352         // Avoid erroneous frees on early exit
 353         WindowsIPC = 0;
 354 #endif
 355         FailedPortList pl;
 356         int do_version = 0, do_nofork = 0, do_debug = 0,
 357             do_nolog = 0, do_root = 0, do_testsuite = 0;    /* flag variables */
 358         int c = 0;
 359
 360         // Initialize so that if we exit before proper initialization they're not deleted
 361         this->Logs = 0;
 362         this->Threads = 0;
 363         this->PI = 0;
 364         this->Users = 0;
 365         this->chanlist = 0;
 366         this->Config = 0;
 367         this->SNO = 0;
 368         this->BanCache = 0;
 369         this->Modules = 0;
 370         this->stats = 0;
 371         this->Timers = 0;
 372         this->Parser = 0;
 373         this->XLines = 0;
 374         this->Modes = 0;
 375         this->Res = 0;
 376         this->ConfigThread = NULL;
 377
 378         // Initialise TIME
 379         this->TIME = time(NULL);
 380
 381         memset(&server, 0, sizeof(server));
 382         memset(&client, 0, sizeof(client));
 383
 384         // This must be created first, so other parts of Insp can use it while starting up
 385         this->Logs = new LogManager(this);
 386
 387         SocketEngineFactory* SEF = new SocketEngineFactory();
 388         SE = SEF->Create(this);
 389         delete SEF;
 390
 391         this->Threads = new ThreadEngine(this);
 392
 393         /* Default implementation does nothing */
 394         this->PI = new ProtocolInterface(this);
 395
 396         this->s_signal = 0;
 397
 398         // Create base manager classes early, so nothing breaks
 399         this->Users = new UserManager(this);
 400
 401         this->Users->unregistered_count = 0;
 402
 403         this->Users->clientlist = new user_hash();
 404         this->Users->uuidlist = new user_hash();
 405         this->chanlist = new chan_hash();
 406
 407         this->Config = new ServerConfig(this);
 408         this->SNO = new SnomaskManager(this);
 409         this->BanCache = new BanCacheManager(this);
 410         this->Modules = new ModuleManager(this);
 411         this->stats = new serverstats();
 412         this->Timers = new TimerManager(this);
 413         this->Parser = new CommandParser(this);
 414         this->XLines = new XLineManager(this);
 415
 416         this->Config->argv = argv;
 417         this->Config->argc = argc;
 418
 419         if (chdir(Config->GetFullProgDir().c_str()))
 420         {
 421                 printf("Unable to change to my directory: %s\nAborted.", strerror(errno));
 422                 exit(0);
 423         }
 424
 425         this->Config->opertypes.clear();
 426         this->Config->operclass.clear();
 427
 428         this->TIME = this->OLDTIME = this->startup_time = time(NULL);
 429         srand(this->TIME);
 430
 431         *this->LogFileName = 0;
 432         strlcpy(this->ConfigFileName, CONFIG_FILE, MAXBUF);
 433
 434         struct option longopts[] =
 435         {
 436                 { "nofork",     no_argument,            &do_nofork,     1       },
 437                 { "logfile",    required_argument,      NULL,           'f'     },
 438                 { "config",     required_argument,      NULL,           'c'     },
 439                 { "debug",      no_argument,            &do_debug,      1       },
 440                 { "nolog",      no_argument,            &do_nolog,      1       },
 441                 { "runasroot",  no_argument,            &do_root,       1       },
 442                 { "version",    no_argument,            &do_version,    1       },
 443                 { "testsuite",  no_argument,            &do_testsuite,  1       },
 444                 { 0, 0, 0, 0 }
 445         };
 446
 447         int index;
 448         while ((c = getopt_long_only(argc, argv, ":f:", longopts, &index)) != -1)
 449         {
 450                 switch (c)
 451                 {
 452                         case 'f':
 453                                 /* Log filename was set */
 454                                 strlcpy(LogFileName, optarg, MAXBUF);
 455                         break;
 456                         case 'c':
 457                                 /* Config filename was set */
 458                                 strlcpy(ConfigFileName, optarg, MAXBUF);
 459                         break;
 460                         case 0:
 461                                 /* getopt_long_only() set an int variable, just keep going */
 462                         break;
 463                         case '?':
 464                                 /* Unknown parameter */
 465                         default:
 466                                 /* Fall through to handle other weird values too */
 467                                 printf("Unknown parameter '%s'\n", argv[optind-1]);
 468                                 printf("Usage: %s [--nofork] [--nolog] [--debug] [--logfile <filename>]\n%*s[--runasroot] [--version] [--config <config>] [--testsuite]\n", argv[0], 8+strlen(argv[0]), " ");
 469                                 Exit(EXIT_STATUS_ARGV);
 470                         break;
 471                 }
 472         }
 473
 474         if (do_testsuite)
 475                 do_nofork = do_debug = true;
 476
 477         if (do_version)
 478         {
 479                 printf("\n%s r%s\n", VERSION, REVISION);
 480                 Exit(EXIT_STATUS_NOERROR);
 481         }
 482
 483 #ifdef WIN32
 484
 485         // Handle forking
 486         if(!do_nofork)
 487         {
 488                 DWORD ExitCode = WindowsForkStart(this);
 489                 if(ExitCode)
 490                         exit(ExitCode);
 491         }
 492
 493         // Set up winsock
 494         WSADATA wsadata;
 495         WSAStartup(MAKEWORD(2,0), &wsadata);
 496         ChangeWindowsSpecificPointers(this);
 497 #endif
 498         strlcpy(Config->MyExecutable,argv[0],MAXBUF);
 499
 500         /* Set the finished argument values */
 501         Config->nofork = do_nofork;
 502         Config->forcedebug = do_debug;
 503         Config->writelog = !do_nolog;
 504         Config->TestSuite = do_testsuite;
 505
 506         if (!this->OpenLog(argv, argc))
 507         {
 508                 printf("ERROR: Could not open logfile %s: %s\n\n", Config->logpath.c_str(), strerror(errno));
 509                 Exit(EXIT_STATUS_LOG);
 510         }
 511
 512         if (!ServerConfig::FileExists(this->ConfigFileName))
 513         {
 514 #ifdef WIN32
 515                 /* Windows can (and defaults to) hide file extensions, so let's play a bit nice for windows users. */
 516                 std::string txtconf = this->ConfigFileName;
 517                 txtconf.append(".txt");
 518
 519                 if (ServerConfig::FileExists(txtconf.c_str()))
 520                 {
 521                         strlcat(this->ConfigFileName, ".txt", MAXBUF);
 522                 }
 523                 else
 524 #endif
 525                 {
 526                         printf("ERROR: Cannot open config file: %s\nExiting...\n", this->ConfigFileName);
 527                         this->Logs->Log("STARTUP",DEFAULT,"Unable to open config file %s", this->ConfigFileName);
 528                         Exit(EXIT_STATUS_CONFIG);
 529                 }
 530         }
 531
 532         printf_c("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
 533         printf_c("(C) InspIRCd Development Team.\033[0m\n\n");
 534         printf_c("Developers:\n");
 535         printf_c("\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special\n");
 536         printf_c("\t\033[1;32mpeavey, aquanight, psychon, dz, danieldg\033[0m\n\n");
 537         printf_c("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
 538
 539         Config->ClearStack();
 540
 541         this->Modes = new ModeParser(this);
 542
 543         if (!do_root)
 544                 this->CheckRoot();
 545         else
 546         {
 547                 printf("* WARNING * WARNING * WARNING * WARNING * WARNING * \n\n");
 548                 printf("YOU ARE RUNNING INSPIRCD AS ROOT. THIS IS UNSUPPORTED\n");
 549                 printf("AND IF YOU ARE HACKED, CRACKED, SPINDLED OR MUTILATED\n");
 550                 printf("OR ANYTHING ELSE UNEXPECTED HAPPENS TO YOU OR YOUR\n");
 551                 printf("SERVER, THEN IT IS YOUR OWN FAULT. IF YOU DID NOT MEAN\n");
 552                 printf("TO START INSPIRCD AS ROOT, HIT CTRL+C NOW AND RESTART\n");
 553                 printf("THE PROGRAM AS A NORMAL USER. YOU HAVE BEEN WARNED!\n");
 554                 printf("\nInspIRCd starting in 20 seconds, ctrl+c to abort...\n");
 555                 sleep(20);
 556         }
 557
 558         this->SetSignals();
 559
 560         if (!Config->nofork)
 561         {
 562                 if (!this->DaemonSeed())
 563                 {
 564                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 565                         Logs->Log("STARTUP", DEFAULT, "ERROR: could not go into daemon mode. Shutting down.");
 566                         Exit(EXIT_STATUS_FORK);
 567                 }
 568         }
 569
 570         SE->RecoverFromFork();
 571
 572         /* During startup we don't actually initialize this
 573          * in the thread engine.
 574          */
 575         this->Config->Read();
 576         this->Config->Apply(NULL, "");
 577         Logs->OpenFileLogs();
 578
 579         /** Note: This is safe, the method checks for user == NULL */
 580         this->Parser->SetupCommandTable();
 581
 582         this->Res = new DNS(this);
 583
 584         this->AddServerName(Config->ServerName);
 585
 586         /*
 587          * Initialise SID/UID.
 588          * For an explanation as to exactly how this works, and why it works this way, see GetUID().
 589          *   -- w00t
 590          */
 591         if (!*Config->sid)
 592         {
 593                 // Generate one
 594                 size_t sid = 0;
 595
 596                 for (const char* x = Config->ServerName; *x; ++x)
 597                         sid = 5 * sid + *x;
 598                 for (const char* y = Config->ServerDesc; *y; ++y)
 599                         sid = 5 * sid + *y;
 600                 sid = sid % 999;
 601
 602                 Config->sid[0] = (char)(sid / 100 + 48);
 603                 Config->sid[1] = (char)(((sid / 10) % 10) + 48);
 604                 Config->sid[2] = (char)(sid % 10 + 48);
 605                 Config->sid[3] = '\0';
 606         }
 607
 608         /* set up fake client again this time with the correct uid */
 609         this->FakeClient = new FakeUser(this, "!");
 610         this->FakeClient->SetFakeServer(Config->ServerName);
 611
 612         // Get XLine to do it's thing.
 613         this->XLines->CheckELines();
 614         this->XLines->ApplyLines();
 615
 616         CheckDie();
 617         int bounditems = BindPorts(pl);
 618
 619         printf("\n");
 620
 621         this->Modules->LoadAll();
 622
 623         /* Just in case no modules were loaded - fix for bug #101 */
 624         this->BuildISupport();
 625         InitializeDisabledCommands(Config->DisabledCommands, this);
 626
 627         if (!pl.empty())
 628         {
 629                 printf("\nWARNING: Not all your client ports could be bound --\nstarting anyway with %d of %d client ports bound.\n\n",
 630                         bounditems, bounditems + (int)pl.size());
 631                 printf("The following port(s) failed to bind:\n");
 632                 printf("Hint: Try using a public IP instead of blank or *\n\n");
 633                 int j = 1;
 634                 for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 635                 {
 636                         printf("%d.\tAddress: %s\tReason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 637                 }
 638         }
 639
 640         printf("\nInspIRCd is now running as '%s'[%s] with %d max open sockets\n", Config->ServerName,Config->GetSID().c_str(), SE->GetMaxFds());
 641
 642 #ifndef WINDOWS
 643         if (!Config->nofork)
 644         {
 645                 if (kill(getppid(), SIGTERM) == -1)
 646                 {
 647                         printf("Error killing parent process: %s\n",strerror(errno));
 648                         Logs->Log("STARTUP", DEFAULT, "Error killing parent process: %s",strerror(errno));
 649                 }
 650         }
 651
 652         if (isatty(0) && isatty(1) && isatty(2))
 653         {
 654                 /* We didn't start from a TTY, we must have started from a background process -
 655                  * e.g. we are restarting, or being launched by cron. Dont kill parent, and dont
 656                  * close stdin/stdout
 657                  */
 658                 if ((!do_nofork) && (!do_testsuite))
 659                 {
 660                         fclose(stdin);
 661                         fclose(stderr);
 662                         fclose(stdout);
 663                 }
 664                 else
 665                 {
 666                         Logs->Log("STARTUP", DEFAULT,"Keeping pseudo-tty open as we are running in the foreground.");
 667                 }
 668         }
 669 #else
 670         WindowsIPC = new IPC(this);
 671         if(!Config->nofork)
 672         {
 673                 WindowsForkKillOwner(this);
 674                 FreeConsole();
 675         }
 676         /* Set win32 service as running, if we are running as a service */
 677         SetServiceRunning();
 678 #endif
 679
 680         Logs->Log("STARTUP", DEFAULT, "Startup complete as '%s'[%s], %d max open sockets", Config->ServerName,Config->GetSID().c_str(), SE->GetMaxFds());
 681
 682 #ifndef WIN32
 683         if (*(this->Config->SetGroup))
 684         {
 685                 int ret;
 686
 687                 // setgroups
 688                 ret = setgroups(0, NULL);
 689
 690                 if (ret == -1)
 691                 {
 692                         this->Logs->Log("SETGROUPS", DEFAULT, "setgroups() failed (wtf?): %s", strerror(errno));
 693                         this->QuickExit(0);
 694                 }
 695
 696                 // setgid
 697                 struct group *g;
 698
 699                 errno = 0;
 700                 g = getgrnam(this->Config->SetGroup);
 701
 702                 if (!g)
 703                 {
 704                         this->Logs->Log("SETGUID", DEFAULT, "getgrnam() failed (bad user?): %s", strerror(errno));
 705                         this->QuickExit(0);
 706                 }
 707
 708                 ret = setgid(g->gr_gid);
 709
 710                 if (ret == -1)
 711                 {
 712                         this->Logs->Log("SETGUID", DEFAULT, "setgid() failed (bad user?): %s", strerror(errno));
 713                         this->QuickExit(0);
 714                 }
 715         }
 716
 717         if (*(this->Config->SetUser))
 718         {
 719                 // setuid
 720                 struct passwd *u;
 721
 722                 errno = 0;
 723                 u = getpwnam(this->Config->SetUser);
 724
 725                 if (!u)
 726                 {
 727                         this->Logs->Log("SETGUID", DEFAULT, "getpwnam() failed (bad user?): %s", strerror(errno));
 728                         this->QuickExit(0);
 729                 }
 730
 731                 int ret = setuid(u->pw_uid);
 732
 733                 if (ret == -1)
 734                 {
 735                         this->Logs->Log("SETGUID", DEFAULT, "setuid() failed (bad user?): %s", strerror(errno));
 736                         this->QuickExit(0);
 737                 }
 738         }
 739 #endif
 740
 741         this->WritePID(Config->PID);
 742 }
 743
 744 int InspIRCd::Run()
 745 {
 746         /* See if we're supposed to be running the test suite rather than entering the mainloop */
 747         if (Config->TestSuite)
 748         {
 749                 TestSuite* ts = new TestSuite(this);
 750                 delete ts;
 751                 Exit(0);
 752         }
 753
 754         while (true)
 755         {
 756 #ifndef WIN32
 757                 static rusage ru;
 758 #else
 759                 static time_t uptime;
 760                 static struct tm * stime;
 761                 static char window_title[100];
 762 #endif
 763
 764                 /* Check if there is a config thread which has finished executing but has not yet been freed */
 765                 if (this->ConfigThread && this->ConfigThread->IsDone())
 766                 {
 767                         /* Rehash has completed */
 768                         this->Logs->Log("CONFIG",DEBUG,"Detected ConfigThread exiting, tidying up...");
 769
 770                         /* Switch over logfiles */
 771                         Logs->CloseLogs();
 772                         Logs->OpenFileLogs();
 773
 774                         /*
 775                          * Apply the changed configuration from the rehash. This is not done within the
 776                          * configuration thread becasuse they may invoke functions that are not threadsafe.
 777                          *
 778                          * XXX: The order of these is IMPORTANT, do not reorder them without testing
 779                          * thoroughly!!!
 780                          */
 781                         this->ConfigThread->Finish();
 782                         this->XLines->CheckELines();
 783                         this->XLines->ApplyLines();
 784                         this->Res->Rehash();
 785                         this->ResetMaxBans();
 786                         InitializeDisabledCommands(Config->DisabledCommands, this);
 787                         User* user = ConfigThread->TheUserUID.empty() ? FindNick(ConfigThread->TheUserUID) : NULL;
 788                         FOREACH_MOD_I(this, I_OnRehash, OnRehash(user));
 789                         this->BuildISupport();
 790
 791                         delete ConfigThread;
 792                         ConfigThread = NULL;
 793                 }
 794
 795                 /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
 796                  * Once per loop iteration is pleanty.
 797                  */
 798                 OLDTIME = TIME;
 799                 TIME = time(NULL);
 800
 801                 /* Run background module timers every few seconds
 802                  * (the docs say modules shouldnt rely on accurate
 803                  * timing using this event, so we dont have to
 804                  * time this exactly).
 805                  */
 806                 if (TIME != OLDTIME)
 807                 {
 808                         /* Allow a buffer of two seconds drift on this so that ntpdate etc dont harass admins */
 809                         if (TIME < OLDTIME - 2)
 810                         {
 811                                 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %lu secs.", (unsigned long)OLDTIME-TIME);
 812                         }
 813                         else if (TIME > OLDTIME + 2)
 814                         {
 815                                 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is jumping FORWARDS! Clock skipped %lu secs.", (unsigned long)TIME - OLDTIME);
 816                         }
 817
 818                         if ((TIME % 3600) == 0)
 819                         {
 820                                 this->RehashUsersAndChans();
 821                                 FOREACH_MOD_I(this, I_OnGarbageCollect, OnGarbageCollect());
 822                         }
 823
 824                         Timers->TickTimers(TIME);
 825                         this->DoBackgroundUserStuff();
 826
 827                         if ((TIME % 5) == 0)
 828                         {
 829                                 FOREACH_MOD_I(this,I_OnBackgroundTimer,OnBackgroundTimer(TIME));
 830                                 SNO->FlushSnotices();
 831                         }
 832 #ifndef WIN32
 833                         /* Same change as in cmd_stats.cpp, use RUSAGE_SELF rather than '0' -- Om */
 834                         if (!getrusage(RUSAGE_SELF, &ru))
 835                         {
 836                                 gettimeofday(&this->stats->LastSampled, NULL);
 837                                 this->stats->LastCPU = ru.ru_utime;
 838                         }
 839 #else
 840                         WindowsIPC->Check();
 841 #endif
 842                 }
 843
 844                 /* Call the socket engine to wait on the active
 845                  * file descriptors. The socket engine has everything's
 846                  * descriptors in its list... dns, modules, users,
 847                  * servers... so its nice and easy, just one call.
 848                  * This will cause any read or write events to be
 849                  * dispatched to their handlers.
 850                  */
 851                 this->SE->DispatchEvents();
 852
 853                 /* if any users were quit, take them out */
 854                 this->GlobalCulls.Apply();
 855
 856                 /* If any inspsockets closed, remove them */
 857                 this->BufferedSocketCull();
 858
 859                 if (this->s_signal)
 860                 {
 861                         this->SignalHandler(s_signal);
 862                         this->s_signal = 0;
 863                 }
 864         }
 865
 866         return 0;
 867 }
 868
 869 void InspIRCd::BufferedSocketCull()
 870 {
 871         for (std::map<BufferedSocket*,BufferedSocket*>::iterator x = SocketCull.begin(); x != SocketCull.end(); ++x)
 872         {
 873                 this->Logs->Log("MISC",DEBUG,"Cull socket");
 874                 SE->DelFd(x->second);
 875                 x->second->Close();
 876                 delete x->second;
 877         }
 878         SocketCull.clear();
 879 }
 880
 881 /**********************************************************************************/
 882
 883 /**
 884  * An ircd in five lines! bwahahaha. ahahahahaha. ahahah *cough*.
 885  */
 886
 887 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 888  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 889  * registration timeout maximum seconds)
 890  */
 891 bool InspIRCd::AllModulesReportReady(User* user)
 892 {
 893         for (EventHandlerIter i = Modules->EventHandlers[I_OnCheckReady].begin(); i != Modules->EventHandlers[I_OnCheckReady].end(); ++i)
 894         {
 895                 if (!(*i)->OnCheckReady(user))
 896                         return false;
 897         }
 898         return true;
 899 }
 900
 901 time_t InspIRCd::Time()
 902 {
 903         return TIME;
 904 }
 905
 906 void InspIRCd::SetSignal(int signal)
 907 {
 908         *mysig = signal;
 909 }
 910
 911 /* On posix systems, the flow of the program starts right here, with
 912  * ENTRYPOINT being a #define that defines main(). On Windows, ENTRYPOINT
 913  * defines smain() and the real main() is in the service code under
 914  * win32service.cpp. This allows the service control manager to control
 915  * the process where we are running as a windows service.
 916  */
 917 ENTRYPOINT
 918 {
 919         SI = new InspIRCd(argc, argv);
 920         mysig = &SI->s_signal;
 921         SI->Run();
 922         delete SI;
 923         return 0;
 924 }