src/inspircd.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2010 InspIRCd Development Team
   6  * See: http://wiki.inspircd.org/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *          the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 /* $Core */
  15 #include "inspircd.h"
  16 #include "inspircd_version.h"
  17 #include <signal.h>
  18
  19 #ifndef WIN32
  20         #include <dirent.h>
  21         #include <unistd.h>
  22         #include <sys/resource.h>
  23         #include <dlfcn.h>
  24         #include <getopt.h>
  25
  26         /* Some systems don't define RUSAGE_SELF. This should fix them. */
  27         #ifndef RUSAGE_SELF
  28                 #define RUSAGE_SELF 0
  29         #endif
  30
  31         #include <pwd.h> // setuid
  32         #include <grp.h> // setgid
  33 #endif
  34
  35 #include <fstream>
  36 #include "xline.h"
  37 #include "bancache.h"
  38 #include "socketengine.h"
  39 #include "socket.h"
  40 #include "command_parse.h"
  41 #include "exitcodes.h"
  42 #include "caller.h"
  43 #include "testsuite.h"
  44
  45 InspIRCd* ServerInstance = NULL;
  46 int* mysig = NULL;
  47
  48 /** Seperate from the other casemap tables so that code *can* still exclusively rely on RFC casemapping
  49  * if it must.
  50  *
  51  * This is provided as a pointer so that modules can change it to their custom mapping tables,
  52  * e.g. for national character support.
  53  */
  54 unsigned const char *national_case_insensitive_map = rfc_case_insensitive_map;
  55
  56
  57 /* Moved from exitcodes.h -- due to duplicate symbols -- Burlex
  58  * XXX this is a bit ugly. -- w00t
  59  */
  60 const char* ExitCodes[] =
  61 {
  62                 "No error", /* 0 */
  63                 "DIE command", /* 1 */
  64                 "execv() failed", /* 2 */
  65                 "Internal error", /* 3 */
  66                 "Config file error", /* 4 */
  67                 "Logfile error", /* 5 */
  68                 "POSIX fork failed", /* 6 */
  69                 "Bad commandline parameters", /* 7 */
  70                 "No ports could be bound", /* 8 */
  71                 "Can't write PID file", /* 9 */
  72                 "SocketEngine could not initialize", /* 10 */
  73                 "Refusing to start up as root", /* 11 */
  74                 "Found a <die> tag!", /* 12 */
  75                 "Couldn't load module on startup", /* 13 */
  76                 "Could not create windows forked process", /* 14 */
  77                 "Received SIGTERM", /* 15 */
  78                 "Bad command handler loaded", /* 16 */
  79                 "RegisterServiceCtrlHandler failed", /* 17 */
  80                 "UpdateSCMStatus failed", /* 18 */
  81                 "CreateEvent failed" /* 19 */
  82 };
  83
  84 template<typename T> static void DeleteZero(T*&n)
  85 {
  86         T* t = n;
  87         n = NULL;
  88         delete t;
  89 }
  90
  91 void InspIRCd::Cleanup()
  92 {
  93         for (unsigned int i = 0; i < ports.size(); i++)
  94         {
  95                 /* This calls the constructor and closes the listening socket */
  96                 ports[i]->cull();
  97                 delete ports[i];
  98         }
  99         ports.clear();
 100
 101         /* Close all client sockets, or the new process inherits them */
 102         std::vector<LocalUser*>::reverse_iterator i = Users->local_users.rbegin();
 103         while (i != this->Users->local_users.rend())
 104         {
 105                 User* u = *i++;
 106                 Users->QuitUser(u, "Server shutdown");
 107         }
 108
 109         GlobalCulls.Apply();
 110         Modules->UnloadAll();
 111
 112         /* Delete objects dynamically allocated in constructor (destructor would be more appropriate, but we're likely exiting) */
 113         /* Must be deleted before modes as it decrements modelines */
 114         if (FakeClient)
 115                 FakeClient->cull();
 116         if (Res)
 117                 Res->cull();
 118         DeleteZero(this->FakeClient);
 119         DeleteZero(this->Users);
 120         DeleteZero(this->Modes);
 121         DeleteZero(this->XLines);
 122         DeleteZero(this->Parser);
 123         DeleteZero(this->stats);
 124         DeleteZero(this->Modules);
 125         DeleteZero(this->BanCache);
 126         DeleteZero(this->SNO);
 127         DeleteZero(this->Config);
 128         DeleteZero(this->Res);
 129         DeleteZero(this->chanlist);
 130         DeleteZero(this->PI);
 131         DeleteZero(this->Threads);
 132         DeleteZero(this->Timers);
 133         DeleteZero(this->SE);
 134         /* Close logging */
 135         this->Logs->CloseLogs();
 136         DeleteZero(this->Logs);
 137 }
 138
 139 void InspIRCd::Restart(const std::string &reason)
 140 {
 141         /* SendError flushes each client's queue,
 142          * regardless of writeability state
 143          */
 144         this->SendError(reason);
 145
 146         /* Figure out our filename (if theyve renamed it, we're boned) */
 147         std::string me;
 148
 149         char** argv = Config->cmdline.argv;
 150
 151 #ifdef WINDOWS
 152         char module[MAX_PATH];
 153         if (GetModuleFileName(NULL, module, MAX_PATH))
 154                 me = module;
 155 #else
 156         me = argv[0];
 157 #endif
 158
 159         this->Cleanup();
 160
 161         if (execv(me.c_str(), argv) == -1)
 162         {
 163                 /* Will raise a SIGABRT if not trapped */
 164                 throw CoreException(std::string("Failed to execv()! error: ") + strerror(errno));
 165         }
 166 }
 167
 168 void InspIRCd::ResetMaxBans()
 169 {
 170         for (chan_hash::const_iterator i = chanlist->begin(); i != chanlist->end(); i++)
 171                 i->second->ResetMaxBans();
 172 }
 173
 174 /** Because hash_map doesn't free its buckets when we delete items, we occasionally
 175  * recreate the hash to free them up.
 176  * We do this by copying the entries from the old hash to a new hash, causing all
 177  * empty buckets to be weeded out of the hash.
 178  * Since this is quite expensive, it's not done very often.
 179  */
 180 void InspIRCd::RehashUsersAndChans()
 181 {
 182         user_hash* old_users = Users->clientlist;
 183         user_hash* old_uuid  = Users->uuidlist;
 184         chan_hash* old_chans = chanlist;
 185
 186         Users->clientlist = new user_hash();
 187         Users->uuidlist = new user_hash();
 188         chanlist = new chan_hash();
 189
 190         for (user_hash::const_iterator n = old_users->begin(); n != old_users->end(); n++)
 191                 Users->clientlist->insert(*n);
 192
 193         for (user_hash::const_iterator n = old_uuid->begin(); n != old_uuid->end(); n++)
 194                 Users->uuidlist->insert(*n);
 195
 196         for (chan_hash::const_iterator n = old_chans->begin(); n != old_chans->end(); n++)
 197                 chanlist->insert(*n);
 198
 199         delete old_users;
 200         delete old_uuid;
 201         delete old_chans;
 202
 203         // Reset the already_sent IDs so we don't wrap it around and drop a message
 204         LocalUser::already_sent_id = 0;
 205         for (std::vector<LocalUser*>::const_iterator i = Users->local_users.begin(); i != Users->local_users.end(); i++)
 206         {
 207                 (**i).already_sent = 0;
 208         }
 209 }
 210
 211 void InspIRCd::SetSignals()
 212 {
 213 #ifndef WIN32
 214         signal(SIGALRM, SIG_IGN);
 215         signal(SIGHUP, InspIRCd::SetSignal);
 216         signal(SIGPIPE, SIG_IGN);
 217         signal(SIGCHLD, SIG_IGN);
 218         /* We want E2BIG not a signal! */
 219         signal(SIGXFSZ, SIG_IGN);
 220 #endif
 221         signal(SIGTERM, InspIRCd::SetSignal);
 222 }
 223
 224 void InspIRCd::QuickExit(int status)
 225 {
 226         exit(0);
 227 }
 228
 229 bool InspIRCd::DaemonSeed()
 230 {
 231 #ifdef WINDOWS
 232         printf_c("InspIRCd Process ID: \033[1;32m%lu\033[0m\n", GetCurrentProcessId());
 233         return true;
 234 #else
 235         signal(SIGTERM, InspIRCd::QuickExit);
 236
 237         int childpid;
 238         if ((childpid = fork ()) < 0)
 239                 return false;
 240         else if (childpid > 0)
 241         {
 242                 /* We wait here for the child process to kill us,
 243                  * so that the shell prompt doesnt come back over
 244                  * the output.
 245                  * Sending a kill with a signal of 0 just checks
 246                  * if the child pid is still around. If theyre not,
 247                  * they threw an error and we should give up.
 248                  */
 249                 while (kill(childpid, 0) != -1)
 250                         sleep(1);
 251                 exit(0);
 252         }
 253         setsid ();
 254         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 255
 256         signal(SIGTERM, InspIRCd::SetSignal);
 257
 258         rlimit rl;
 259         if (getrlimit(RLIMIT_CORE, &rl) == -1)
 260         {
 261                 this->Logs->Log("STARTUP",DEFAULT,"Failed to getrlimit()!");
 262                 return false;
 263         }
 264         rl.rlim_cur = rl.rlim_max;
 265
 266         if (setrlimit(RLIMIT_CORE, &rl) == -1)
 267                         this->Logs->Log("STARTUP",DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 268
 269         return true;
 270 #endif
 271 }
 272
 273 void InspIRCd::WritePID(const std::string &filename)
 274 {
 275         std::string fname(filename);
 276         if (fname.empty())
 277                 fname = "data/inspircd.pid";
 278         std::ofstream outfile(fname.c_str());
 279         if (outfile.is_open())
 280         {
 281                 outfile << getpid();
 282                 outfile.close();
 283         }
 284         else
 285         {
 286                 printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
 287                 this->Logs->Log("STARTUP",DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
 288                 Exit(EXIT_STATUS_PID);
 289         }
 290 }
 291
 292 InspIRCd::InspIRCd(int argc, char** argv) :
 293          ConfigFileName("conf/inspircd.conf"),
 294
 295          /* Functor pointer initialisation.
 296           *
 297           * THIS MUST MATCH THE ORDER OF DECLARATION OF THE FUNCTORS, e.g. the methods
 298           * themselves within the class.
 299           */
 300          NICKForced("NICKForced", NULL),
 301          OperQuit("OperQuit", NULL),
 302          GenRandom(&HandleGenRandom),
 303          IsChannel(&HandleIsChannel),
 304          IsSID(&HandleIsSID),
 305          Rehash(&HandleRehash),
 306          IsNick(&HandleIsNick),
 307          IsIdent(&HandleIsIdent),
 308          FloodQuitUser(&HandleFloodQuitUser),
 309          OnCheckExemption(&HandleOnCheckExemption)
 310 {
 311 #ifdef WIN32
 312         // Strict, frequent checking of memory on debug builds
 313         _CrtSetDbgFlag ( _CRTDBG_CHECK_ALWAYS_DF | _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
 314
 315         // Avoid erroneous frees on early exit
 316         WindowsIPC = 0;
 317 #endif
 318
 319         ServerInstance = this;
 320
 321         Extensions.Register(&NICKForced);
 322         Extensions.Register(&OperQuit);
 323
 324         FailedPortList pl;
 325         int do_version = 0, do_nofork = 0, do_debug = 0,
 326             do_nolog = 0, do_root = 0, do_testsuite = 0;    /* flag variables */
 327         int c = 0;
 328
 329         // Initialize so that if we exit before proper initialization they're not deleted
 330         this->Logs = 0;
 331         this->Threads = 0;
 332         this->PI = 0;
 333         this->Users = 0;
 334         this->chanlist = 0;
 335         this->Config = 0;
 336         this->SNO = 0;
 337         this->BanCache = 0;
 338         this->Modules = 0;
 339         this->stats = 0;
 340         this->Timers = 0;
 341         this->Parser = 0;
 342         this->XLines = 0;
 343         this->Modes = 0;
 344         this->Res = 0;
 345         this->ConfigThread = NULL;
 346
 347         // Initialise TIME
 348         clock_gettime(CLOCK_REALTIME, &TIME);
 349         this->startup_time = TIME.tv_sec;
 350
 351         // This must be created first, so other parts of Insp can use it while starting up
 352         this->Logs = new LogManager;
 353
 354         SE = CreateSocketEngine();
 355
 356         this->Threads = new ThreadEngine;
 357
 358         /* Default implementation does nothing */
 359         this->PI = new ProtocolInterface;
 360
 361         this->s_signal = 0;
 362
 363         // Create base manager classes early, so nothing breaks
 364         this->Users = new UserManager;
 365
 366         this->Users->unregistered_count = 0;
 367
 368         this->Users->clientlist = new user_hash();
 369         this->Users->uuidlist = new user_hash();
 370         this->chanlist = new chan_hash();
 371
 372         this->Config = new ServerConfig;
 373         this->SNO = new SnomaskManager;
 374         this->BanCache = new BanCacheManager;
 375         this->Modules = new ModuleManager();
 376         this->stats = new serverstats();
 377         this->Timers = new TimerManager;
 378         this->Parser = new CommandParser;
 379         this->XLines = new XLineManager;
 380
 381         this->Config->cmdline.argv = argv;
 382         this->Config->cmdline.argc = argc;
 383
 384         srandom(TIME.tv_nsec ^ TIME.tv_sec);
 385
 386         struct option longopts[] =
 387         {
 388                 { "nofork",     no_argument,            &do_nofork,     1       },
 389                 { "logfile",    required_argument,      NULL,           'f'     },
 390                 { "config",     required_argument,      NULL,           'c'     },
 391                 { "debug",      no_argument,            &do_debug,      1       },
 392                 { "nolog",      no_argument,            &do_nolog,      1       },
 393                 { "runasroot",  no_argument,            &do_root,       1       },
 394                 { "version",    no_argument,            &do_version,    1       },
 395                 { "testsuite",  no_argument,            &do_testsuite,  1       },
 396                 { 0, 0, 0, 0 }
 397         };
 398
 399         int index;
 400         while ((c = getopt_long(argc, argv, ":f:", longopts, &index)) != -1)
 401         {
 402                 switch (c)
 403                 {
 404                         case 'f':
 405                                 /* Log filename was set */
 406                                 Config->cmdline.startup_log = optarg;
 407                         break;
 408                         case 'c':
 409                                 /* Config filename was set */
 410                                 ConfigFileName = optarg;
 411                         break;
 412                         case 0:
 413                                 /* getopt_long_only() set an int variable, just keep going */
 414                         break;
 415                         case '?':
 416                                 /* Unknown parameter */
 417                         default:
 418                                 /* Fall through to handle other weird values too */
 419                                 printf("Unknown parameter '%s'\n", argv[optind-1]);
 420                                 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])), " ");
 421                                 Exit(EXIT_STATUS_ARGV);
 422                         break;
 423                 }
 424         }
 425
 426         if (do_testsuite)
 427                 do_nofork = do_debug = true;
 428
 429         if (do_version)
 430         {
 431                 printf("\n%s r%s\n", VERSION, REVISION);
 432                 Exit(EXIT_STATUS_NOERROR);
 433         }
 434
 435 #ifdef WIN32
 436
 437         // Handle forking
 438         if(!do_nofork)
 439         {
 440                 DWORD ExitCode = WindowsForkStart();
 441                 if(ExitCode)
 442                         exit(ExitCode);
 443         }
 444
 445         // Set up winsock
 446         WSADATA wsadata;
 447         WSAStartup(MAKEWORD(2,0), &wsadata);
 448         ChangeWindowsSpecificPointers();
 449 #endif
 450
 451         /* Set the finished argument values */
 452         Config->cmdline.nofork = do_nofork;
 453         Config->cmdline.forcedebug = do_debug;
 454         Config->cmdline.writelog = !do_nolog;
 455         Config->cmdline.TestSuite = do_testsuite;
 456
 457         if (do_debug)
 458         {
 459                 FileWriter* fw = new FileWriter(stdout);
 460                 FileLogStream* fls = new FileLogStream(DEBUG, fw);
 461                 Logs->AddLogTypes("*", fls, true);
 462         }
 463         else if (!this->OpenLog(argv, argc))
 464         {
 465                 printf("ERROR: Could not open initial logfile %s: %s\n\n", Config->cmdline.startup_log.c_str(), strerror(errno));
 466                 Exit(EXIT_STATUS_LOG);
 467         }
 468
 469         if (!ServerConfig::FileExists(ConfigFileName.c_str()))
 470         {
 471 #ifdef WIN32
 472                 /* Windows can (and defaults to) hide file extensions, so let's play a bit nice for windows users. */
 473                 std::string txtconf = this->ConfigFileName;
 474                 txtconf.append(".txt");
 475
 476                 if (ServerConfig::FileExists(txtconf.c_str()))
 477                 {
 478                         ConfigFileName = txtconf;
 479                 }
 480                 else
 481 #endif
 482                 {
 483                         printf("ERROR: Cannot open config file: %s\nExiting...\n", ConfigFileName.c_str());
 484                         this->Logs->Log("STARTUP",DEFAULT,"Unable to open config file %s", ConfigFileName.c_str());
 485                         Exit(EXIT_STATUS_CONFIG);
 486                 }
 487         }
 488
 489         printf_c("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
 490         printf_c("(C) InspIRCd Development Team.\033[0m\n\n");
 491         printf_c("Developers:\n");
 492         printf_c("\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special\n");
 493         printf_c("\t\033[1;32mpeavey, aquanight, psychon, dz, danieldg\033[0m\n\n");
 494         printf_c("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
 495
 496         this->Modes = new ModeParser;
 497
 498         if (!do_root)
 499                 this->CheckRoot();
 500         else
 501         {
 502                 printf("* WARNING * WARNING * WARNING * WARNING * WARNING * \n\n");
 503                 printf("YOU ARE RUNNING INSPIRCD AS ROOT. THIS IS UNSUPPORTED\n");
 504                 printf("AND IF YOU ARE HACKED, CRACKED, SPINDLED OR MUTILATED\n");
 505                 printf("OR ANYTHING ELSE UNEXPECTED HAPPENS TO YOU OR YOUR\n");
 506                 printf("SERVER, THEN IT IS YOUR OWN FAULT. IF YOU DID NOT MEAN\n");
 507                 printf("TO START INSPIRCD AS ROOT, HIT CTRL+C NOW AND RESTART\n");
 508                 printf("THE PROGRAM AS A NORMAL USER. YOU HAVE BEEN WARNED!\n");
 509                 printf("\nInspIRCd starting in 20 seconds, ctrl+c to abort...\n");
 510                 sleep(20);
 511         }
 512
 513         this->SetSignals();
 514
 515         if (!Config->cmdline.nofork)
 516         {
 517                 if (!this->DaemonSeed())
 518                 {
 519                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 520                         Logs->Log("STARTUP", DEFAULT, "ERROR: could not go into daemon mode. Shutting down.");
 521                         Exit(EXIT_STATUS_FORK);
 522                 }
 523         }
 524
 525         SE->RecoverFromFork();
 526
 527         /* During startup we don't actually initialize this
 528          * in the thread engine.
 529          */
 530         this->Config->Read();
 531         this->Config->Apply(NULL, "");
 532         Logs->OpenFileLogs();
 533
 534         this->Res = new DNS();
 535
 536         /*
 537          * Initialise SID/UID.
 538          * For an explanation as to exactly how this works, and why it works this way, see GetUID().
 539          *   -- w00t
 540          */
 541         if (Config->sid.empty())
 542         {
 543                 // Generate one
 544                 unsigned int sid = 0;
 545                 char sidstr[4];
 546
 547                 for (const char* x = Config->ServerName.c_str(); *x; ++x)
 548                         sid = 5 * sid + *x;
 549                 for (const char* y = Config->ServerDesc.c_str(); *y; ++y)
 550                         sid = 5 * sid + *y;
 551                 sprintf(sidstr, "%03d", sid % 1000);
 552
 553                 Config->sid = sidstr;
 554         }
 555
 556         /* set up fake client again this time with the correct uid */
 557         this->FakeClient = new FakeUser(Config->sid, Config->ServerName);
 558
 559         // Get XLine to do it's thing.
 560         this->XLines->CheckELines();
 561         this->XLines->ApplyLines();
 562
 563         int bounditems = BindPorts(pl);
 564
 565         printf("\n");
 566
 567         this->Modules->LoadAll();
 568
 569         /* Just in case no modules were loaded - fix for bug #101 */
 570         this->BuildISupport();
 571         Config->ApplyDisabledCommands(Config->DisabledCommands);
 572
 573         if (!pl.empty())
 574         {
 575                 printf("\nWARNING: Not all your client ports could be bound --\nstarting anyway with %d of %d client ports bound.\n\n",
 576                         bounditems, bounditems + (int)pl.size());
 577                 printf("The following port(s) failed to bind:\n");
 578                 printf("Hint: Try using a public IP instead of blank or *\n\n");
 579                 int j = 1;
 580                 for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 581                 {
 582                         printf("%d.\tAddress: %s\tReason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 583                 }
 584         }
 585
 586         printf("\nInspIRCd is now running as '%s'[%s] with %d max open sockets\n",
 587                 Config->ServerName.c_str(),Config->GetSID().c_str(), SE->GetMaxFds());
 588
 589 #ifndef WINDOWS
 590         if (!Config->cmdline.nofork)
 591         {
 592                 if (kill(getppid(), SIGTERM) == -1)
 593                 {
 594                         printf("Error killing parent process: %s\n",strerror(errno));
 595                         Logs->Log("STARTUP", DEFAULT, "Error killing parent process: %s",strerror(errno));
 596                 }
 597         }
 598
 599         if (isatty(0) && isatty(1) && isatty(2))
 600         {
 601                 /* We didn't start from a TTY, we must have started from a background process -
 602                  * e.g. we are restarting, or being launched by cron. Dont kill parent, and dont
 603                  * close stdin/stdout
 604                  */
 605                 if ((!do_nofork) && (!do_testsuite))
 606                 {
 607                         fclose(stdin);
 608                         fclose(stderr);
 609                         if (!Config->cmdline.forcedebug)
 610                                 fclose(stdout);
 611                 }
 612                 else
 613                 {
 614                         Logs->Log("STARTUP", DEFAULT,"Keeping pseudo-tty open as we are running in the foreground.");
 615                 }
 616         }
 617 #else
 618         WindowsIPC = new IPC;
 619         if(!Config->nofork)
 620         {
 621                 WindowsForkKillOwner();
 622                 FreeConsole();
 623         }
 624         /* Set win32 service as running, if we are running as a service */
 625         SetServiceRunning();
 626 #endif
 627
 628         Logs->Log("STARTUP", DEFAULT, "Startup complete as '%s'[%s], %d max open sockets", Config->ServerName.c_str(),Config->GetSID().c_str(), SE->GetMaxFds());
 629
 630 #ifndef WIN32
 631         std::string SetUser = Config->ConfValue("security")->getString("runasuser");
 632         std::string SetGroup = Config->ConfValue("security")->getString("runasgroup");
 633         if (!SetGroup.empty())
 634         {
 635                 int ret;
 636
 637                 // setgroups
 638                 ret = setgroups(0, NULL);
 639
 640                 if (ret == -1)
 641                 {
 642                         this->Logs->Log("SETGROUPS", DEFAULT, "setgroups() failed (wtf?): %s", strerror(errno));
 643                         this->QuickExit(0);
 644                 }
 645
 646                 // setgid
 647                 struct group *g;
 648
 649                 errno = 0;
 650                 g = getgrnam(SetGroup.c_str());
 651
 652                 if (!g)
 653                 {
 654                         this->Logs->Log("SETGUID", DEFAULT, "getgrnam() failed (bad user?): %s", strerror(errno));
 655                         this->QuickExit(0);
 656                 }
 657
 658                 ret = setgid(g->gr_gid);
 659
 660                 if (ret == -1)
 661                 {
 662                         this->Logs->Log("SETGUID", DEFAULT, "setgid() failed (bad user?): %s", strerror(errno));
 663                         this->QuickExit(0);
 664                 }
 665         }
 666
 667         if (!SetUser.empty())
 668         {
 669                 // setuid
 670                 struct passwd *u;
 671
 672                 errno = 0;
 673                 u = getpwnam(SetUser.c_str());
 674
 675                 if (!u)
 676                 {
 677                         this->Logs->Log("SETGUID", DEFAULT, "getpwnam() failed (bad user?): %s", strerror(errno));
 678                         this->QuickExit(0);
 679                 }
 680
 681                 int ret = setuid(u->pw_uid);
 682
 683                 if (ret == -1)
 684                 {
 685                         this->Logs->Log("SETGUID", DEFAULT, "setuid() failed (bad user?): %s", strerror(errno));
 686                         this->QuickExit(0);
 687                 }
 688         }
 689 #endif
 690
 691         this->WritePID(Config->PID);
 692 }
 693
 694 void InspIRCd::UpdateTime()
 695 {
 696         clock_gettime(CLOCK_REALTIME, &TIME);
 697 }
 698
 699 int InspIRCd::Run()
 700 {
 701         /* See if we're supposed to be running the test suite rather than entering the mainloop */
 702         if (Config->cmdline.TestSuite)
 703         {
 704                 TestSuite* ts = new TestSuite;
 705                 delete ts;
 706                 Exit(0);
 707         }
 708
 709         UpdateTime();
 710         time_t OLDTIME = TIME.tv_sec;
 711
 712         while (true)
 713         {
 714 #ifndef WIN32
 715                 static rusage ru;
 716 #else
 717                 static time_t uptime;
 718                 static struct tm * stime;
 719                 static char window_title[100];
 720 #endif
 721
 722                 /* Check if there is a config thread which has finished executing but has not yet been freed */
 723                 if (this->ConfigThread && this->ConfigThread->IsDone())
 724                 {
 725                         /* Rehash has completed */
 726                         this->Logs->Log("CONFIG",DEBUG,"Detected ConfigThread exiting, tidying up...");
 727
 728                         this->ConfigThread->Finish();
 729
 730                         ConfigThread->join();
 731                         delete ConfigThread;
 732                         ConfigThread = NULL;
 733                 }
 734
 735                 UpdateTime();
 736
 737                 /* Run background module timers every few seconds
 738                  * (the docs say modules shouldnt rely on accurate
 739                  * timing using this event, so we dont have to
 740                  * time this exactly).
 741                  */
 742                 if (TIME.tv_sec != OLDTIME)
 743                 {
 744                         OLDTIME = TIME.tv_sec;
 745 #ifndef WIN32
 746                         getrusage(RUSAGE_SELF, &ru);
 747                         stats->LastSampled = TIME;
 748                         stats->LastCPU = ru.ru_utime;
 749 #else
 750                         WindowsIPC->Check();
 751 #endif
 752
 753                         /* Allow a buffer of two seconds drift on this so that ntpdate etc dont harass admins */
 754                         if (TIME.tv_sec < OLDTIME - 2)
 755                         {
 756                                 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %lu secs.", (unsigned long)OLDTIME-TIME.tv_sec);
 757                         }
 758                         else if (TIME.tv_sec > OLDTIME + 2)
 759                         {
 760                                 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is jumping FORWARDS! Clock skipped %lu secs.", (unsigned long)TIME.tv_sec - OLDTIME);
 761                         }
 762
 763                         if ((TIME.tv_sec % 3600) == 0)
 764                         {
 765                                 this->RehashUsersAndChans();
 766                                 FOREACH_MOD(I_OnGarbageCollect, OnGarbageCollect());
 767                         }
 768
 769                         Timers->TickTimers(TIME.tv_sec);
 770                         this->DoBackgroundUserStuff();
 771
 772                         if ((TIME.tv_sec % 5) == 0)
 773                         {
 774                                 FOREACH_MOD(I_OnBackgroundTimer,OnBackgroundTimer(TIME.tv_sec));
 775                                 SNO->FlushSnotices();
 776                         }
 777                 }
 778
 779                 /* Call the socket engine to wait on the active
 780                  * file descriptors. The socket engine has everything's
 781                  * descriptors in its list... dns, modules, users,
 782                  * servers... so its nice and easy, just one call.
 783                  * This will cause any read or write events to be
 784                  * dispatched to their handlers.
 785                  */
 786                 this->SE->DispatchTrialWrites();
 787                 this->SE->DispatchEvents();
 788
 789                 /* if any users were quit, take them out */
 790                 GlobalCulls.Apply();
 791                 AtomicActions.Run();
 792
 793                 if (this->s_signal)
 794                 {
 795                         this->SignalHandler(s_signal);
 796                         this->s_signal = 0;
 797                 }
 798         }
 799
 800         return 0;
 801 }
 802
 803 /**********************************************************************************/
 804
 805 /**
 806  * An ircd in five lines! bwahahaha. ahahahahaha. ahahah *cough*.
 807  */
 808
 809 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 810  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 811  * registration timeout maximum seconds)
 812  */
 813 bool InspIRCd::AllModulesReportReady(LocalUser* user)
 814 {
 815         ModResult res;
 816         FIRST_MOD_RESULT(OnCheckReady, res, (user));
 817         return (res == MOD_RES_PASSTHRU);
 818 }
 819
 820 void InspIRCd::SetSignal(int signal)
 821 {
 822         *mysig = signal;
 823 }
 824
 825 /* On posix systems, the flow of the program starts right here, with
 826  * ENTRYPOINT being a #define that defines main(). On Windows, ENTRYPOINT
 827  * defines smain() and the real main() is in the service code under
 828  * win32service.cpp. This allows the service control manager to control
 829  * the process where we are running as a windows service.
 830  */
 831 ENTRYPOINT
 832 {
 833         new InspIRCd(argc, argv);
 834         mysig = &ServerInstance->s_signal;
 835         ServerInstance->Run();
 836         delete ServerInstance;
 837         return 0;
 838 }