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 /* $Install: src/inspircd $(BINPATH) */
  15 #include "inspircd.h"
  16 #include <signal.h>
  17
  18 #ifndef WIN32
  19         #include <dirent.h>
  20         #include <unistd.h>
  21         #include <sys/resource.h>
  22         #include <dlfcn.h>
  23         #include <getopt.h>
  24
  25         /* Some systems don't define RUSAGE_SELF. This should fix them. */
  26         #ifndef RUSAGE_SELF
  27                 #define RUSAGE_SELF 0
  28         #endif
  29
  30         #include <pwd.h> // setuid
  31         #include <grp.h> // setgid
  32 #endif
  33
  34 #include <fstream>
  35 #include "xline.h"
  36 #include "bancache.h"
  37 #include "socketengine.h"
  38 #include "inspircd_se_config.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* SI = 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 < Config->ports.size(); i++)
  98                 {
  99                         /* This calls the constructor and closes the listening socket */
 100                         delete Config->ports[i];
 101                 }
 102
 103                 Config->ports.clear();
 104         }
 105
 106         /* Close all client sockets, or the new process inherits them */
 107         for (std::vector<User*>::const_iterator i = this->Users->local_users.begin(); i != this->Users->local_users.end(); i++)
 108         {
 109                 this->Users->QuitUser((*i), "Server shutdown");
 110                 (*i)->CloseSocket();
 111         }
 112
 113         /* We do this more than once, so that any service providers get a
 114          * chance to be unhooked by the modules using them, but then get
 115          * a chance to be removed themsleves.
 116          *
 117          * XXX there may be a better way to do this with 1.2
 118          */
 119         for (int tries = 0; tries < 3; tries++)
 120         {
 121                 std::vector<std::string> module_names = Modules->GetAllModuleNames(0);
 122                 for (std::vector<std::string>::iterator k = module_names.begin(); k != module_names.end(); ++k)
 123                 {
 124                         /* Unload all modules, so they get a chance to clean up their listeners */
 125                         this->Modules->Unload(k->c_str());
 126                 }
 127         }
 128         /* Remove core commands */
 129         Parser->RemoveCommands("<core>");
 130
 131         /* Cleanup Server Names */
 132         for(servernamelist::iterator itr = servernames.begin(); itr != servernames.end(); ++itr)
 133                 delete (*itr);
 134
 135         /* Delete objects dynamically allocated in constructor (destructor would be more appropriate, but we're likely exiting) */
 136         /* Must be deleted before modes as it decrements modelines */
 137         DeleteZero(this->Users);
 138         DeleteZero(this->Modes);
 139         DeleteZero(this->XLines);
 140         DeleteZero(this->Parser);
 141         DeleteZero(this->stats);
 142         DeleteZero(this->Modules);
 143         DeleteZero(this->BanCache);
 144         DeleteZero(this->SNO);
 145         DeleteZero(this->Config);
 146         DeleteZero(this->Res);
 147         DeleteZero(this->chanlist);
 148         DeleteZero(this->PI);
 149         DeleteZero(this->Threads);
 150         DeleteZero(this->Timers);
 151         /* Close logging */
 152         this->Logs->CloseLogs();
 153         DeleteZero(this->Logs);
 154 }
 155
 156 void InspIRCd::Restart(const std::string &reason)
 157 {
 158         /* SendError flushes each client's queue,
 159          * regardless of writeability state
 160          */
 161         this->SendError(reason);
 162
 163         /* Figure out our filename (if theyve renamed it, we're boned) */
 164         std::string me;
 165
 166 #ifdef WINDOWS
 167         char module[MAX_PATH];
 168         if (GetModuleFileName(NULL, module, MAX_PATH))
 169                 me = module;
 170 #else
 171         me = Config->MyDir + "/inspircd";
 172 #endif
 173
 174         char** argv = Config->argv;
 175
 176         this->Cleanup();
 177
 178         if (execv(me.c_str(), argv) == -1)
 179         {
 180                 /* Will raise a SIGABRT if not trapped */
 181                 throw CoreException(std::string("Failed to execv()! error: ") + strerror(errno));
 182         }
 183 }
 184
 185 void InspIRCd::ResetMaxBans()
 186 {
 187         for (chan_hash::const_iterator i = chanlist->begin(); i != chanlist->end(); i++)
 188                 i->second->ResetMaxBans();
 189 }
 190
 191 /** Because hash_map doesnt free its buckets when we delete items (this is a 'feature')
 192  * we must occasionally rehash the hash (yes really).
 193  * We do this by copying the entries from the old hash to a new hash, causing all
 194  * empty buckets to be weeded out of the hash. We dont do this on a timer, as its
 195  * very expensive, so instead we do it when the user types /REHASH and expects a
 196  * short delay anyway.
 197  */
 198 void InspIRCd::RehashUsersAndChans()
 199 {
 200         user_hash* old_users = this->Users->clientlist;
 201         user_hash* old_uuid  = this->Users->uuidlist;
 202         chan_hash* old_chans = this->chanlist;
 203
 204         this->Users->clientlist = new user_hash();
 205         this->Users->uuidlist = new user_hash();
 206         this->chanlist = new chan_hash();
 207
 208         for (user_hash::const_iterator n = old_users->begin(); n != old_users->end(); n++)
 209                 this->Users->clientlist->insert(*n);
 210
 211         delete old_users;
 212
 213         for (user_hash::const_iterator n = old_uuid->begin(); n != old_uuid->end(); n++)
 214                 this->Users->uuidlist->insert(*n);
 215
 216         delete old_uuid;
 217
 218         for (chan_hash::const_iterator n = old_chans->begin(); n != old_chans->end(); n++)
 219                 this->chanlist->insert(*n);
 220
 221         delete old_chans;
 222 }
 223
 224 void InspIRCd::SetSignals()
 225 {
 226 #ifndef WIN32
 227         signal(SIGALRM, SIG_IGN);
 228         signal(SIGHUP, InspIRCd::SetSignal);
 229         signal(SIGPIPE, SIG_IGN);
 230         signal(SIGCHLD, SIG_IGN);
 231         /* We want E2BIG not a signal! */
 232         signal(SIGXFSZ, SIG_IGN);
 233 #endif
 234         signal(SIGTERM, InspIRCd::SetSignal);
 235 }
 236
 237 void InspIRCd::QuickExit(int status)
 238 {
 239         exit(0);
 240 }
 241
 242 bool InspIRCd::DaemonSeed()
 243 {
 244 #ifdef WINDOWS
 245         printf_c("InspIRCd Process ID: \033[1;32m%lu\033[0m\n", GetCurrentProcessId());
 246         return true;
 247 #else
 248         signal(SIGTERM, InspIRCd::QuickExit);
 249
 250         int childpid;
 251         if ((childpid = fork ()) < 0)
 252                 return false;
 253         else if (childpid > 0)
 254         {
 255                 /* We wait here for the child process to kill us,
 256                  * so that the shell prompt doesnt come back over
 257                  * the output.
 258                  * Sending a kill with a signal of 0 just checks
 259                  * if the child pid is still around. If theyre not,
 260                  * they threw an error and we should give up.
 261                  */
 262                 while (kill(childpid, 0) != -1)
 263                         sleep(1);
 264                 exit(0);
 265         }
 266         setsid ();
 267         umask (007);
 268         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 269
 270         signal(SIGTERM, InspIRCd::SetSignal);
 271
 272         rlimit rl;
 273         if (getrlimit(RLIMIT_CORE, &rl) == -1)
 274         {
 275                 this->Logs->Log("STARTUP",DEFAULT,"Failed to getrlimit()!");
 276                 return false;
 277         }
 278         else
 279         {
 280                 rl.rlim_cur = rl.rlim_max;
 281                 if (setrlimit(RLIMIT_CORE, &rl) == -1)
 282                         this->Logs->Log("STARTUP",DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 283         }
 284
 285         return true;
 286 #endif
 287 }
 288
 289 void InspIRCd::WritePID(const std::string &filename)
 290 {
 291         std::string fname = (filename.empty() ? "inspircd.pid" : filename);
 292         std::replace(fname.begin(), fname.end(), '\\', '/');
 293         if ((fname[0] != '/') && (!Config->StartsWithWindowsDriveLetter(filename)))
 294         {
 295                 std::string::size_type pos;
 296                 std::string confpath = this->ConfigFileName;
 297                 if ((pos = confpath.rfind("/")) != std::string::npos)
 298                 {
 299                         /* Leaves us with just the path */
 300                         fname = confpath.substr(0, pos) + std::string("/") + fname;
 301                 }
 302         }
 303         std::ofstream outfile(fname.c_str());
 304         if (outfile.is_open())
 305         {
 306                 outfile << getpid();
 307                 outfile.close();
 308         }
 309         else
 310         {
 311                 printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
 312                 this->Logs->Log("STARTUP",DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
 313                 Exit(EXIT_STATUS_PID);
 314         }
 315 }
 316
 317 InspIRCd::InspIRCd(int argc, char** argv)
 318         : GlobalCulls(this),
 319
 320          /* Functor initialisation. Note that the ordering here is very important.
 321           *
 322           * THIS MUST MATCH ORDER OF DECLARATION OF THE HandleWhateverFunc classes
 323           * within class InspIRCd.
 324           */
 325          HandleProcessUser(this),
 326          HandleIsNick(this),
 327          HandleIsIdent(this),
 328          HandleFindDescriptor(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          FindDescriptor(&HandleFindDescriptor),
 346          FloodQuitUser(&HandleFloodQuitUser)
 347
 348 {
 349 #ifdef WIN32
 350         // Strict, frequent checking of memory on debug builds
 351         _CrtSetDbgFlag ( _CRTDBG_CHECK_ALWAYS_DF | _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
 352
 353         // Avoid erroneous frees on early exit
 354         WindowsIPC = 0;
 355 #endif
 356         int found_ports = 0;
 357         FailedPortList pl;
 358         int do_version = 0, do_nofork = 0, do_debug = 0,
 359             do_nolog = 0, do_root = 0, do_testsuite = 0;    /* flag variables */
 360         char c = 0;
 361
 362         // Initialize so that if we exit before proper initialization they're not deleted
 363         this->Logs = 0;
 364         this->Threads = 0;
 365         this->PI = 0;
 366         this->Users = 0;
 367         this->chanlist = 0;
 368         this->Config = 0;
 369         this->SNO = 0;
 370         this->BanCache = 0;
 371         this->Modules = 0;
 372         this->stats = 0;
 373         this->Timers = 0;
 374         this->Parser = 0;
 375         this->XLines = 0;
 376         this->Modes = 0;
 377         this->Res = 0;
 378
 379         // Initialise TIME
 380         this->TIME = time(NULL);
 381
 382         memset(&server, 0, sizeof(server));
 383         memset(&client, 0, sizeof(client));
 384
 385         // This must be created first, so other parts of Insp can use it while starting up
 386         this->Logs = new LogManager(this);
 387
 388         SocketEngineFactory* SEF = new SocketEngineFactory();
 389         SE = SEF->Create(this);
 390         delete SEF;
 391
 392         this->Threads = new ThreadEngine(this);
 393
 394         /* Default implementation does nothing */
 395         this->PI = new ProtocolInterface(this);
 396
 397         this->s_signal = 0;
 398
 399         // Create base manager classes early, so nothing breaks
 400         this->Users = new UserManager(this);
 401
 402         this->Users->unregistered_count = 0;
 403
 404         this->Users->clientlist = new user_hash();
 405         this->Users->uuidlist = new user_hash();
 406         this->chanlist = new chan_hash();
 407
 408         this->Config = new ServerConfig(this);
 409         this->SNO = new SnomaskManager(this);
 410         this->BanCache = new BanCacheManager(this);
 411         this->Modules = new ModuleManager(this);
 412         this->stats = new serverstats();
 413         this->Timers = new TimerManager(this);
 414         this->Parser = new CommandParser(this);
 415         this->XLines = new XLineManager(this);
 416
 417         this->Config->argv = argv;
 418         this->Config->argc = argc;
 419
 420         if (chdir(Config->GetFullProgDir().c_str()))
 421         {
 422                 printf("Unable to change to my directory: %s\nAborted.", strerror(errno));
 423                 exit(0);
 424         }
 425
 426         this->Config->opertypes.clear();
 427         this->Config->operclass.clear();
 428
 429         this->TIME = this->OLDTIME = this->startup_time = time(NULL);
 430         srand(this->TIME);
 431
 432         *this->LogFileName = 0;
 433         strlcpy(this->ConfigFileName, CONFIG_FILE, MAXBUF);
 434
 435         struct option longopts[] =
 436         {
 437                 { "nofork",     no_argument,            &do_nofork,     1       },
 438                 { "logfile",    required_argument,      NULL,           'f'     },
 439                 { "config",     required_argument,      NULL,           'c'     },
 440                 { "debug",      no_argument,            &do_debug,      1       },
 441                 { "nolog",      no_argument,            &do_nolog,      1       },
 442                 { "runasroot",  no_argument,            &do_root,       1       },
 443                 { "version",    no_argument,            &do_version,    1       },
 444                 { "testsuite",  no_argument,            &do_testsuite,  1       },
 445                 { 0, 0, 0, 0 }
 446         };
 447
 448         while ((c = getopt_long_only(argc, argv, ":f:", longopts, NULL)) != -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                         default:
 464                                 /* Unknown parameter! DANGER, INTRUDER.... err.... yeah. */
 465                                 printf("Usage: %s [--nofork] [--nolog] [--debug] [--logfile <filename>]\n\
 466                                                   [--runasroot] [--version] [--config <config>] [--testsuite]\n", argv[0]);
 467                                 Exit(EXIT_STATUS_ARGV);
 468                         break;
 469                 }
 470         }
 471
 472         if (do_testsuite)
 473                 do_nofork = do_debug = true;
 474
 475         if (do_version)
 476         {
 477                 printf("\n%s r%s\n", VERSION, REVISION);
 478                 Exit(EXIT_STATUS_NOERROR);
 479         }
 480
 481 #ifdef WIN32
 482
 483         // Handle forking
 484         if(!do_nofork)
 485         {
 486                 DWORD ExitCode = WindowsForkStart(this);
 487                 if(ExitCode)
 488                         exit(ExitCode);
 489         }
 490
 491         // Set up winsock
 492         WSADATA wsadata;
 493         WSAStartup(MAKEWORD(2,0), &wsadata);
 494         ChangeWindowsSpecificPointers(this);
 495 #endif
 496         strlcpy(Config->MyExecutable,argv[0],MAXBUF);
 497
 498         /* Set the finished argument values */
 499         Config->nofork = do_nofork;
 500         Config->forcedebug = do_debug;
 501         Config->writelog = !do_nolog;
 502         Config->TestSuite = do_testsuite;
 503
 504         if (!this->OpenLog(argv, argc))
 505         {
 506                 printf("ERROR: Could not open logfile %s: %s\n\n", Config->logpath.c_str(), strerror(errno));
 507                 Exit(EXIT_STATUS_LOG);
 508         }
 509
 510         if (!ServerConfig::FileExists(this->ConfigFileName))
 511         {
 512 #ifdef WIN32
 513                 /* Windows can (and defaults to) hide file extensions, so let's play a bit nice for windows users. */
 514                 std::string txtconf = this->ConfigFileName;
 515                 txtconf.append(".txt");
 516
 517                 if (ServerConfig::FileExists(txtconf.c_str()))
 518                 {
 519                         strlcat(this->ConfigFileName, ".txt", MAXBUF);
 520                 }
 521                 else
 522 #endif
 523                 {
 524                         printf("ERROR: Cannot open config file: %s\nExiting...\n", this->ConfigFileName);
 525                         this->Logs->Log("STARTUP",DEFAULT,"Unable to open config file %s", this->ConfigFileName);
 526                         Exit(EXIT_STATUS_CONFIG);
 527                 }
 528         }
 529
 530         printf_c("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
 531         printf_c("(C) InspIRCd Development Team.\033[0m\n\n");
 532         printf_c("Developers:\n");
 533         printf_c("\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special\n");
 534         printf_c("\t\033[1;32mpeavey, aquanight, psychon, dz, danieldg\033[0m\n\n");
 535         printf_c("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
 536
 537         Config->ClearStack();
 538
 539         this->Modes = new ModeParser(this);
 540
 541         if (!do_root)
 542                 this->CheckRoot();
 543         else
 544         {
 545                 printf("* WARNING * WARNING * WARNING * WARNING * WARNING * \n\n");
 546                 printf("YOU ARE RUNNING INSPIRCD AS ROOT. THIS IS UNSUPPORTED\n");
 547                 printf("AND IF YOU ARE HACKED, CRACKED, SPINDLED OR MUTILATED\n");
 548                 printf("OR ANYTHING ELSE UNEXPECTED HAPPENS TO YOU OR YOUR\n");
 549                 printf("SERVER, THEN IT IS YOUR OWN FAULT. IF YOU DID NOT MEAN\n");
 550                 printf("TO START INSPIRCD AS ROOT, HIT CTRL+C NOW AND RESTART\n");
 551                 printf("THE PROGRAM AS A NORMAL USER. YOU HAVE BEEN WARNED!\n");
 552                 printf("\nInspIRCd starting in 20 seconds, ctrl+c to abort...\n");
 553                 sleep(20);
 554         }
 555
 556         this->SetSignals();
 557
 558         if (!Config->nofork)
 559         {
 560                 if (!this->DaemonSeed())
 561                 {
 562                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 563                         Logs->Log("STARTUP", DEFAULT, "ERROR: could not go into daemon mode. Shutting down.");
 564                         Exit(EXIT_STATUS_FORK);
 565                 }
 566         }
 567
 568         SE->RecoverFromFork();
 569
 570         /* During startup we don't actually initialize this
 571          * in the thread engine.
 572          */
 573         this->ConfigThread = new ConfigReaderThread(this, true, "");
 574         ConfigThread->Run();
 575         delete ConfigThread;
 576         this->ConfigThread = NULL;
 577         /* Switch over logfiles */
 578         Logs->OpenFileLogs();
 579
 580         /** Note: This is safe, the method checks for user == NULL */
 581         this->Parser->SetupCommandTable();
 582
 583         this->Res = new DNS(this);
 584
 585         this->AddServerName(Config->ServerName);
 586
 587         /*
 588          * Initialise SID/UID.
 589          * For an explanation as to exactly how this works, and why it works this way, see GetUID().
 590          *   -- w00t
 591          */
 592         if (!*Config->sid)
 593         {
 594                 // Generate one
 595                 size_t sid = 0;
 596
 597                 for (const char* x = Config->ServerName; *x; ++x)
 598                         sid = 5 * sid + *x;
 599                 for (const char* y = Config->ServerDesc; *y; ++y)
 600                         sid = 5 * sid + *y;
 601                 sid = sid % 999;
 602
 603                 Config->sid[0] = (char)(sid / 100 + 48);
 604                 Config->sid[1] = (char)(((sid / 10) % 10) + 48);
 605                 Config->sid[2] = (char)(sid % 10 + 48);
 606                 Config->sid[3] = '\0';
 607         }
 608
 609         /* set up fake client again this time with the correct uid */
 610         this->FakeClient = new User(this, "#INVALID");
 611         this->FakeClient->SetFd(FD_MAGIC_NUMBER);
 612
 613         // Get XLine to do it's thing.
 614         this->XLines->CheckELines();
 615         this->XLines->ApplyLines();
 616
 617         CheckDie();
 618         int bounditems = BindPorts(true, found_ports, pl);
 619
 620         printf("\n");
 621
 622         this->Modules->LoadAll();
 623
 624         /* Just in case no modules were loaded - fix for bug #101 */
 625         this->BuildISupport();
 626         InitializeDisabledCommands(Config->DisabledCommands, this);
 627
 628         if (Config->ports.size() != (unsigned int)found_ports)
 629         {
 630                 printf("\nWARNING: Not all your client ports could be bound --\nstarting anyway with %d of %d client ports bound.\n\n", bounditems, found_ports);
 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
 769                         /* Switch over logfiles */
 770                         Logs->CloseLogs();
 771                         Logs->OpenFileLogs();
 772
 773                         this->Logs->Log("CONFIG",DEBUG,"Detected ConfigThread exiting, tidying up...");
 774
 775                         /* These are currently not known to be threadsafe, so they are executed outside
 776                          * of the thread. It would be pretty simple to move them to the thread Run method
 777                          * once they are known threadsafe with all the correct mutexes in place. This might
 778                          * not be worth the effort however as these functions execute relatively quickly
 779                          * and would not benefit from being within the config read thread.
 780                          *
 781                          * XXX: The order of these is IMPORTANT, do not reorder them without testing
 782                          * thoroughly!!!
 783                          */
 784                         this->XLines->CheckELines();
 785                         this->XLines->ApplyLines();
 786                         this->Res->Rehash();
 787                         this->ResetMaxBans();
 788                         InitializeDisabledCommands(Config->DisabledCommands, this);
 789                         User* user = !Config->RehashUserUID.empty() ? FindNick(Config->RehashUserUID) : NULL;
 790                         FOREACH_MOD_I(this, I_OnRehash, OnRehash(user, Config->RehashParameter));
 791                         this->BuildISupport();
 792
 793                         /* IMPORTANT: This delete may hang if you fuck up your thread syncronization.
 794                          * It will hang waiting for the ConfigThread to 'join' to avoid race conditons,
 795                          * until the other thread is completed.
 796                          */
 797                         delete ConfigThread;
 798                         ConfigThread = NULL;
 799                 }
 800
 801                 /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
 802                  * Once per loop iteration is pleanty.
 803                  */
 804                 OLDTIME = TIME;
 805                 TIME = time(NULL);
 806
 807                 /* Run background module timers every few seconds
 808                  * (the docs say modules shouldnt rely on accurate
 809                  * timing using this event, so we dont have to
 810                  * time this exactly).
 811                  */
 812                 if (TIME != OLDTIME)
 813                 {
 814                         /* Allow a buffer of two seconds drift on this so that ntpdate etc dont harass admins */
 815                         if (TIME < OLDTIME - 2)
 816                         {
 817                                 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %lu secs.", (unsigned long)OLDTIME-TIME);
 818                         }
 819                         else if (TIME > OLDTIME + 2)
 820                         {
 821                                 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is jumping FORWARDS! Clock skipped %lu secs.", (unsigned long)TIME - OLDTIME);
 822                         }
 823
 824                         if ((TIME % 3600) == 0)
 825                         {
 826                                 this->RehashUsersAndChans();
 827                                 FOREACH_MOD_I(this, I_OnGarbageCollect, OnGarbageCollect());
 828                         }
 829
 830                         Timers->TickTimers(TIME);
 831                         this->DoBackgroundUserStuff();
 832
 833                         if ((TIME % 5) == 0)
 834                         {
 835                                 FOREACH_MOD_I(this,I_OnBackgroundTimer,OnBackgroundTimer(TIME));
 836                                 SNO->FlushSnotices();
 837                         }
 838 #ifndef WIN32
 839                         /* Same change as in cmd_stats.cpp, use RUSAGE_SELF rather than '0' -- Om */
 840                         if (!getrusage(RUSAGE_SELF, &ru))
 841                         {
 842                                 gettimeofday(&this->stats->LastSampled, NULL);
 843                                 this->stats->LastCPU = ru.ru_utime;
 844                         }
 845 #else
 846                         WindowsIPC->Check();
 847 #endif
 848                 }
 849
 850                 /* Call the socket engine to wait on the active
 851                  * file descriptors. The socket engine has everything's
 852                  * descriptors in its list... dns, modules, users,
 853                  * servers... so its nice and easy, just one call.
 854                  * This will cause any read or write events to be
 855                  * dispatched to their handlers.
 856                  */
 857                 this->SE->DispatchEvents();
 858
 859                 /* if any users were quit, take them out */
 860                 this->GlobalCulls.Apply();
 861
 862                 /* If any inspsockets closed, remove them */
 863                 this->BufferedSocketCull();
 864
 865                 if (this->s_signal)
 866                 {
 867                         this->SignalHandler(s_signal);
 868                         this->s_signal = 0;
 869                 }
 870         }
 871
 872         return 0;
 873 }
 874
 875 void InspIRCd::BufferedSocketCull()
 876 {
 877         for (std::map<BufferedSocket*,BufferedSocket*>::iterator x = SocketCull.begin(); x != SocketCull.end(); ++x)
 878         {
 879                 this->Logs->Log("MISC",DEBUG,"Cull socket");
 880                 SE->DelFd(x->second);
 881                 x->second->Close();
 882                 delete x->second;
 883         }
 884         SocketCull.clear();
 885 }
 886
 887 /**********************************************************************************/
 888
 889 /**
 890  * An ircd in five lines! bwahahaha. ahahahahaha. ahahah *cough*.
 891  */
 892
 893 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 894  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 895  * registration timeout maximum seconds)
 896  */
 897 bool InspIRCd::AllModulesReportReady(User* user)
 898 {
 899         for (EventHandlerIter i = Modules->EventHandlers[I_OnCheckReady].begin(); i != Modules->EventHandlers[I_OnCheckReady].end(); ++i)
 900         {
 901                 if (!(*i)->OnCheckReady(user))
 902                         return false;
 903         }
 904         return true;
 905 }
 906
 907 time_t InspIRCd::Time()
 908 {
 909         return TIME;
 910 }
 911
 912 void InspIRCd::SetSignal(int signal)
 913 {
 914         *mysig = signal;
 915 }
 916
 917 /* On posix systems, the flow of the program starts right here, with
 918  * ENTRYPOINT being a #define that defines main(). On Windows, ENTRYPOINT
 919  * defines smain() and the real main() is in the service code under
 920  * win32service.cpp. This allows the service control manager to control
 921  * the process where we are running as a windows service.
 922  */
 923 ENTRYPOINT
 924 {
 925         SI = new InspIRCd(argc, argv);
 926         mysig = &SI->s_signal;
 927         SI->Run();
 928         delete SI;
 929         return 0;
 930 }