src/inspircd.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
   6  * See: http://wiki.inspircd.org/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *          the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 /* $Core */
  15 #include "inspircd.h"
  16 #include "inspircd_version.h"
  17 #include <signal.h>
  18
  19 #ifndef WIN32
  20         #include <dirent.h>
  21         #include <unistd.h>
  22         #include <sys/resource.h>
  23         #include <dlfcn.h>
  24         #include <getopt.h>
  25
  26         /* Some systems don't define RUSAGE_SELF. This should fix them. */
  27         #ifndef RUSAGE_SELF
  28                 #define RUSAGE_SELF 0
  29         #endif
  30
  31         #include <pwd.h> // setuid
  32         #include <grp.h> // setgid
  33 #endif
  34
  35 #include <fstream>
  36 #include "xline.h"
  37 #include "bancache.h"
  38 #include "socketengine.h"
  39 #include "socket.h"
  40 #include "command_parse.h"
  41 #include "exitcodes.h"
  42 #include "caller.h"
  43 #include "testsuite.h"
  44
  45 InspIRCd* ServerInstance = NULL;
  46 int* mysig = NULL;
  47
  48 /** Seperate from the other casemap tables so that code *can* still exclusively rely on RFC casemapping
  49  * if it must.
  50  *
  51  * This is provided as a pointer so that modules can change it to their custom mapping tables,
  52  * e.g. for national character support.
  53  */
  54 unsigned const char *national_case_insensitive_map = rfc_case_insensitive_map;
  55
  56
  57 /* Moved from exitcodes.h -- due to duplicate symbols -- Burlex
  58  * XXX this is a bit ugly. -- w00t
  59  */
  60 const char* ExitCodes[] =
  61 {
  62                 "No error", /* 0 */
  63                 "DIE command", /* 1 */
  64                 "execv() failed", /* 2 */
  65                 "Internal error", /* 3 */
  66                 "Config file error", /* 4 */
  67                 "Logfile error", /* 5 */
  68                 "POSIX fork failed", /* 6 */
  69                 "Bad commandline parameters", /* 7 */
  70                 "No ports could be bound", /* 8 */
  71                 "Can't write PID file", /* 9 */
  72                 "SocketEngine could not initialize", /* 10 */
  73                 "Refusing to start up as root", /* 11 */
  74                 "Found a <die> tag!", /* 12 */
  75                 "Couldn't load module on startup", /* 13 */
  76                 "Could not create windows forked process", /* 14 */
  77                 "Received SIGTERM", /* 15 */
  78                 "Bad command handler loaded", /* 16 */
  79                 "RegisterServiceCtrlHandler failed", /* 17 */
  80                 "UpdateSCMStatus failed", /* 18 */
  81                 "CreateEvent failed" /* 19 */
  82 };
  83
  84 template<typename T> static void DeleteZero(T*&n)
  85 {
  86         T* t = n;
  87         n = NULL;
  88         delete t;
  89 }
  90
  91 void InspIRCd::Cleanup()
  92 {
  93         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         DeleteZero(this->FakeClient);
 117         DeleteZero(this->Users);
 118         DeleteZero(this->Modes);
 119         DeleteZero(this->XLines);
 120         DeleteZero(this->Parser);
 121         DeleteZero(this->stats);
 122         DeleteZero(this->Modules);
 123         DeleteZero(this->BanCache);
 124         DeleteZero(this->SNO);
 125         DeleteZero(this->Config);
 126         DeleteZero(this->Res);
 127         DeleteZero(this->chanlist);
 128         DeleteZero(this->PI);
 129         DeleteZero(this->Threads);
 130         DeleteZero(this->Timers);
 131         DeleteZero(this->SE);
 132         /* Close logging */
 133         this->Logs->CloseLogs();
 134         DeleteZero(this->Logs);
 135 }
 136
 137 void InspIRCd::Restart(const std::string &reason)
 138 {
 139         /* SendError flushes each client's queue,
 140          * regardless of writeability state
 141          */
 142         this->SendError(reason);
 143
 144         /* Figure out our filename (if theyve renamed it, we're boned) */
 145         std::string me;
 146
 147         char** argv = Config->cmdline.argv;
 148
 149 #ifdef WINDOWS
 150         char module[MAX_PATH];
 151         if (GetModuleFileName(NULL, module, MAX_PATH))
 152                 me = module;
 153 #else
 154         me = argv[0];
 155 #endif
 156
 157         this->Cleanup();
 158
 159         if (execv(me.c_str(), argv) == -1)
 160         {
 161                 /* Will raise a SIGABRT if not trapped */
 162                 throw CoreException(std::string("Failed to execv()! error: ") + strerror(errno));
 163         }
 164 }
 165
 166 void InspIRCd::ResetMaxBans()
 167 {
 168         for (chan_hash::const_iterator i = chanlist->begin(); i != chanlist->end(); i++)
 169                 i->second->ResetMaxBans();
 170 }
 171
 172 /** Because hash_map doesnt free its buckets when we delete items (this is a 'feature')
 173  * we must occasionally rehash the hash (yes really).
 174  * We do this by copying the entries from the old hash to a new hash, causing all
 175  * empty buckets to be weeded out of the hash. We dont do this on a timer, as its
 176  * very expensive, so instead we do it when the user types /REHASH and expects a
 177  * short delay anyway.
 178  */
 179 void InspIRCd::RehashUsersAndChans()
 180 {
 181         user_hash* old_users = this->Users->clientlist;
 182         user_hash* old_uuid  = this->Users->uuidlist;
 183         chan_hash* old_chans = this->chanlist;
 184
 185         this->Users->clientlist = new user_hash();
 186         this->Users->uuidlist = new user_hash();
 187         this->chanlist = new chan_hash();
 188
 189         for (user_hash::const_iterator n = old_users->begin(); n != old_users->end(); n++)
 190                 this->Users->clientlist->insert(*n);
 191
 192         delete old_users;
 193
 194         for (user_hash::const_iterator n = old_uuid->begin(); n != old_uuid->end(); n++)
 195                 this->Users->uuidlist->insert(*n);
 196
 197         delete old_uuid;
 198
 199         for (chan_hash::const_iterator n = old_chans->begin(); n != old_chans->end(); n++)
 200                 this->chanlist->insert(*n);
 201
 202         delete old_chans;
 203 }
 204
 205 void InspIRCd::SetSignals()
 206 {
 207 #ifndef WIN32
 208         signal(SIGALRM, SIG_IGN);
 209         signal(SIGHUP, InspIRCd::SetSignal);
 210         signal(SIGPIPE, SIG_IGN);
 211         signal(SIGCHLD, SIG_IGN);
 212         /* We want E2BIG not a signal! */
 213         signal(SIGXFSZ, SIG_IGN);
 214 #endif
 215         signal(SIGTERM, InspIRCd::SetSignal);
 216 }
 217
 218 void InspIRCd::QuickExit(int status)
 219 {
 220         exit(0);
 221 }
 222
 223 bool InspIRCd::DaemonSeed()
 224 {
 225 #ifdef WINDOWS
 226         printf_c("InspIRCd Process ID: \033[1;32m%lu\033[0m\n", GetCurrentProcessId());
 227         return true;
 228 #else
 229         signal(SIGTERM, InspIRCd::QuickExit);
 230
 231         int childpid;
 232         if ((childpid = fork ()) < 0)
 233                 return false;
 234         else if (childpid > 0)
 235         {
 236                 /* We wait here for the child process to kill us,
 237                  * so that the shell prompt doesnt come back over
 238                  * the output.
 239                  * Sending a kill with a signal of 0 just checks
 240                  * if the child pid is still around. If theyre not,
 241                  * they threw an error and we should give up.
 242                  */
 243                 while (kill(childpid, 0) != -1)
 244                         sleep(1);
 245                 exit(0);
 246         }
 247         setsid ();
 248         umask (007);
 249         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 250
 251         signal(SIGTERM, InspIRCd::SetSignal);
 252
 253         rlimit rl;
 254         if (getrlimit(RLIMIT_CORE, &rl) == -1)
 255         {
 256                 this->Logs->Log("STARTUP",DEFAULT,"Failed to getrlimit()!");
 257                 return false;
 258         }
 259         rl.rlim_cur = rl.rlim_max;
 260
 261         if (setrlimit(RLIMIT_CORE, &rl) == -1)
 262                         this->Logs->Log("STARTUP",DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 263
 264         return true;
 265 #endif
 266 }
 267
 268 void InspIRCd::WritePID(const std::string &filename)
 269 {
 270         std::string fname(filename);
 271         if (fname.empty())
 272                 fname = "data/inspircd.pid";
 273         std::ofstream outfile(fname.c_str());
 274         if (outfile.is_open())
 275         {
 276                 outfile << getpid();
 277                 outfile.close();
 278         }
 279         else
 280         {
 281                 printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
 282                 this->Logs->Log("STARTUP",DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
 283                 Exit(EXIT_STATUS_PID);
 284         }
 285 }
 286
 287 InspIRCd::InspIRCd(int argc, char** argv) :
 288          ConfigFileName("conf/inspircd.conf"),
 289
 290          /* Functor pointer initialisation.
 291           *
 292           * THIS MUST MATCH THE ORDER OF DECLARATION OF THE FUNCTORS, e.g. the methods
 293           * themselves within the class.
 294           */
 295          NICKForced("NICKForced", NULL),
 296          OperQuit("OperQuit", NULL),
 297          IsChannel(&HandleIsChannel),
 298          IsSID(&HandleIsSID),
 299          Rehash(&HandleRehash),
 300          IsNick(&HandleIsNick),
 301          IsIdent(&HandleIsIdent),
 302          FloodQuitUser(&HandleFloodQuitUser)
 303 {
 304 #ifdef WIN32
 305         // Strict, frequent checking of memory on debug builds
 306         _CrtSetDbgFlag ( _CRTDBG_CHECK_ALWAYS_DF | _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
 307
 308         // Avoid erroneous frees on early exit
 309         WindowsIPC = 0;
 310 #endif
 311
 312         ServerInstance = this;
 313
 314         Extensions.Register(&NICKForced);
 315         Extensions.Register(&OperQuit);
 316
 317         FailedPortList pl;
 318         int do_version = 0, do_nofork = 0, do_debug = 0,
 319             do_nolog = 0, do_root = 0, do_testsuite = 0;    /* flag variables */
 320         int c = 0;
 321
 322         // Initialize so that if we exit before proper initialization they're not deleted
 323         this->Logs = 0;
 324         this->Threads = 0;
 325         this->PI = 0;
 326         this->Users = 0;
 327         this->chanlist = 0;
 328         this->Config = 0;
 329         this->SNO = 0;
 330         this->BanCache = 0;
 331         this->Modules = 0;
 332         this->stats = 0;
 333         this->Timers = 0;
 334         this->Parser = 0;
 335         this->XLines = 0;
 336         this->Modes = 0;
 337         this->Res = 0;
 338         this->ConfigThread = NULL;
 339
 340         // Initialise TIME
 341         this->TIME = this->OLDTIME = this->startup_time = time(NULL);
 342
 343         // This must be created first, so other parts of Insp can use it while starting up
 344         this->Logs = new LogManager;
 345
 346         SE = CreateSocketEngine();
 347
 348         this->Threads = new ThreadEngine;
 349
 350         /* Default implementation does nothing */
 351         this->PI = new ProtocolInterface;
 352
 353         this->s_signal = 0;
 354
 355         // Create base manager classes early, so nothing breaks
 356         this->Users = new UserManager;
 357
 358         this->Users->unregistered_count = 0;
 359
 360         this->Users->clientlist = new user_hash();
 361         this->Users->uuidlist = new user_hash();
 362         this->chanlist = new chan_hash();
 363
 364         this->Config = new ServerConfig;
 365         this->SNO = new SnomaskManager;
 366         this->BanCache = new BanCacheManager;
 367         this->Modules = new ModuleManager();
 368         this->stats = new serverstats();
 369         this->Timers = new TimerManager;
 370         this->Parser = new CommandParser;
 371         this->XLines = new XLineManager;
 372
 373         this->Config->cmdline.argv = argv;
 374         this->Config->cmdline.argc = argc;
 375
 376         srand(this->TIME);
 377
 378         struct option longopts[] =
 379         {
 380                 { "nofork",     no_argument,            &do_nofork,     1       },
 381                 { "logfile",    required_argument,      NULL,           'f'     },
 382                 { "config",     required_argument,      NULL,           'c'     },
 383                 { "debug",      no_argument,            &do_debug,      1       },
 384                 { "nolog",      no_argument,            &do_nolog,      1       },
 385                 { "runasroot",  no_argument,            &do_root,       1       },
 386                 { "version",    no_argument,            &do_version,    1       },
 387                 { "testsuite",  no_argument,            &do_testsuite,  1       },
 388                 { 0, 0, 0, 0 }
 389         };
 390
 391         int index;
 392         while ((c = getopt_long_only(argc, argv, ":f:", longopts, &index)) != -1)
 393         {
 394                 switch (c)
 395                 {
 396                         case 'f':
 397                                 /* Log filename was set */
 398                                 Config->cmdline.startup_log = optarg;
 399                         break;
 400                         case 'c':
 401                                 /* Config filename was set */
 402                                 ConfigFileName = optarg;
 403                         break;
 404                         case 0:
 405                                 /* getopt_long_only() set an int variable, just keep going */
 406                         break;
 407                         case '?':
 408                                 /* Unknown parameter */
 409                         default:
 410                                 /* Fall through to handle other weird values too */
 411                                 printf("Unknown parameter '%s'\n", argv[optind-1]);
 412                                 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])), " ");
 413                                 Exit(EXIT_STATUS_ARGV);
 414                         break;
 415                 }
 416         }
 417
 418         if (do_testsuite)
 419                 do_nofork = do_debug = true;
 420
 421         if (do_version)
 422         {
 423                 printf("\n%s r%s\n", VERSION, REVISION);
 424                 Exit(EXIT_STATUS_NOERROR);
 425         }
 426
 427 #ifdef WIN32
 428
 429         // Handle forking
 430         if(!do_nofork)
 431         {
 432                 DWORD ExitCode = WindowsForkStart();
 433                 if(ExitCode)
 434                         exit(ExitCode);
 435         }
 436
 437         // Set up winsock
 438         WSADATA wsadata;
 439         WSAStartup(MAKEWORD(2,0), &wsadata);
 440         ChangeWindowsSpecificPointers();
 441 #endif
 442
 443         /* Set the finished argument values */
 444         Config->cmdline.nofork = do_nofork;
 445         Config->cmdline.forcedebug = do_debug;
 446         Config->cmdline.writelog = !do_nolog;
 447         Config->cmdline.TestSuite = do_testsuite;
 448
 449         if (do_debug)
 450         {
 451                 FileWriter* fw = new FileWriter(stdout);
 452                 FileLogStream* fls = new FileLogStream(DEBUG, fw);
 453                 Logs->AddLogTypes("*", fls, true);
 454         }
 455         else if (!this->OpenLog(argv, argc))
 456         {
 457                 printf("ERROR: Could not open initial logfile %s: %s\n\n", Config->cmdline.startup_log.c_str(), strerror(errno));
 458                 Exit(EXIT_STATUS_LOG);
 459         }
 460
 461         if (!ServerConfig::FileExists(ConfigFileName.c_str()))
 462         {
 463 #ifdef WIN32
 464                 /* Windows can (and defaults to) hide file extensions, so let's play a bit nice for windows users. */
 465                 std::string txtconf = this->ConfigFileName;
 466                 txtconf.append(".txt");
 467
 468                 if (ServerConfig::FileExists(txtconf.c_str()))
 469                 {
 470                         ConfigFileName = txtconf;
 471                 }
 472                 else
 473 #endif
 474                 {
 475                         printf("ERROR: Cannot open config file: %s\nExiting...\n", ConfigFileName.c_str());
 476                         this->Logs->Log("STARTUP",DEFAULT,"Unable to open config file %s", ConfigFileName.c_str());
 477                         Exit(EXIT_STATUS_CONFIG);
 478                 }
 479         }
 480
 481         printf_c("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
 482         printf_c("(C) InspIRCd Development Team.\033[0m\n\n");
 483         printf_c("Developers:\n");
 484         printf_c("\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special\n");
 485         printf_c("\t\033[1;32mpeavey, aquanight, psychon, dz, danieldg\033[0m\n\n");
 486         printf_c("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
 487
 488         this->Modes = new ModeParser;
 489
 490         if (!do_root)
 491                 this->CheckRoot();
 492         else
 493         {
 494                 printf("* WARNING * WARNING * WARNING * WARNING * WARNING * \n\n");
 495                 printf("YOU ARE RUNNING INSPIRCD AS ROOT. THIS IS UNSUPPORTED\n");
 496                 printf("AND IF YOU ARE HACKED, CRACKED, SPINDLED OR MUTILATED\n");
 497                 printf("OR ANYTHING ELSE UNEXPECTED HAPPENS TO YOU OR YOUR\n");
 498                 printf("SERVER, THEN IT IS YOUR OWN FAULT. IF YOU DID NOT MEAN\n");
 499                 printf("TO START INSPIRCD AS ROOT, HIT CTRL+C NOW AND RESTART\n");
 500                 printf("THE PROGRAM AS A NORMAL USER. YOU HAVE BEEN WARNED!\n");
 501                 printf("\nInspIRCd starting in 20 seconds, ctrl+c to abort...\n");
 502                 sleep(20);
 503         }
 504
 505         this->SetSignals();
 506
 507         if (!Config->cmdline.nofork)
 508         {
 509                 if (!this->DaemonSeed())
 510                 {
 511                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 512                         Logs->Log("STARTUP", DEFAULT, "ERROR: could not go into daemon mode. Shutting down.");
 513                         Exit(EXIT_STATUS_FORK);
 514                 }
 515         }
 516
 517         SE->RecoverFromFork();
 518
 519         /* During startup we don't actually initialize this
 520          * in the thread engine.
 521          */
 522         this->Config->Read();
 523         this->Config->Apply(NULL, "");
 524         Logs->OpenFileLogs();
 525
 526         this->Res = new DNS;
 527
 528         /*
 529          * Initialise SID/UID.
 530          * For an explanation as to exactly how this works, and why it works this way, see GetUID().
 531          *   -- w00t
 532          */
 533         if (Config->sid.empty())
 534         {
 535                 // Generate one
 536                 unsigned int sid = 0;
 537                 char sidstr[4];
 538
 539                 for (const char* x = Config->ServerName.c_str(); *x; ++x)
 540                         sid = 5 * sid + *x;
 541                 for (const char* y = Config->ServerDesc.c_str(); *y; ++y)
 542                         sid = 5 * sid + *y;
 543                 sprintf(sidstr, "%03d", sid % 1000);
 544
 545                 Config->sid = sidstr;
 546         }
 547
 548         /* set up fake client again this time with the correct uid */
 549         this->FakeClient = new FakeUser("!");
 550         this->FakeClient->SetFakeServer(Config->ServerName);
 551
 552         // Get XLine to do it's thing.
 553         this->XLines->CheckELines();
 554         this->XLines->ApplyLines();
 555
 556         int bounditems = BindPorts(pl);
 557
 558         printf("\n");
 559
 560         this->Modules->LoadAll();
 561
 562         /* Just in case no modules were loaded - fix for bug #101 */
 563         this->BuildISupport();
 564         Config->ApplyDisabledCommands(Config->DisabledCommands);
 565
 566         if (!pl.empty())
 567         {
 568                 printf("\nWARNING: Not all your client ports could be bound --\nstarting anyway with %d of %d client ports bound.\n\n",
 569                         bounditems, bounditems + (int)pl.size());
 570                 printf("The following port(s) failed to bind:\n");
 571                 printf("Hint: Try using a public IP instead of blank or *\n\n");
 572                 int j = 1;
 573                 for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 574                 {
 575                         printf("%d.\tAddress: %s\tReason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
 576                 }
 577         }
 578
 579         printf("\nInspIRCd is now running as '%s'[%s] with %d max open sockets\n",
 580                 Config->ServerName.c_str(),Config->GetSID().c_str(), SE->GetMaxFds());
 581
 582 #ifndef WINDOWS
 583         if (!Config->cmdline.nofork)
 584         {
 585                 if (kill(getppid(), SIGTERM) == -1)
 586                 {
 587                         printf("Error killing parent process: %s\n",strerror(errno));
 588                         Logs->Log("STARTUP", DEFAULT, "Error killing parent process: %s",strerror(errno));
 589                 }
 590         }
 591
 592         if (isatty(0) && isatty(1) && isatty(2))
 593         {
 594                 /* We didn't start from a TTY, we must have started from a background process -
 595                  * e.g. we are restarting, or being launched by cron. Dont kill parent, and dont
 596                  * close stdin/stdout
 597                  */
 598                 if ((!do_nofork) && (!do_testsuite))
 599                 {
 600                         fclose(stdin);
 601                         fclose(stderr);
 602                         if (!Config->cmdline.forcedebug)
 603                                 fclose(stdout);
 604                 }
 605                 else
 606                 {
 607                         Logs->Log("STARTUP", DEFAULT,"Keeping pseudo-tty open as we are running in the foreground.");
 608                 }
 609         }
 610 #else
 611         WindowsIPC = new IPC;
 612         if(!Config->nofork)
 613         {
 614                 WindowsForkKillOwner();
 615                 FreeConsole();
 616         }
 617         /* Set win32 service as running, if we are running as a service */
 618         SetServiceRunning();
 619 #endif
 620
 621         Logs->Log("STARTUP", DEFAULT, "Startup complete as '%s'[%s], %d max open sockets", Config->ServerName.c_str(),Config->GetSID().c_str(), SE->GetMaxFds());
 622
 623 #ifndef WIN32
 624         std::string SetUser = Config->ConfValue("security")->getString("runasuser");
 625         std::string SetGroup = Config->ConfValue("security")->getString("runasgroup");
 626         if (!SetGroup.empty())
 627         {
 628                 int ret;
 629
 630                 // setgroups
 631                 ret = setgroups(0, NULL);
 632
 633                 if (ret == -1)
 634                 {
 635                         this->Logs->Log("SETGROUPS", DEFAULT, "setgroups() failed (wtf?): %s", strerror(errno));
 636                         this->QuickExit(0);
 637                 }
 638
 639                 // setgid
 640                 struct group *g;
 641
 642                 errno = 0;
 643                 g = getgrnam(SetGroup.c_str());
 644
 645                 if (!g)
 646                 {
 647                         this->Logs->Log("SETGUID", DEFAULT, "getgrnam() failed (bad user?): %s", strerror(errno));
 648                         this->QuickExit(0);
 649                 }
 650
 651                 ret = setgid(g->gr_gid);
 652
 653                 if (ret == -1)
 654                 {
 655                         this->Logs->Log("SETGUID", DEFAULT, "setgid() failed (bad user?): %s", strerror(errno));
 656                         this->QuickExit(0);
 657                 }
 658         }
 659
 660         if (!SetUser.empty())
 661         {
 662                 // setuid
 663                 struct passwd *u;
 664
 665                 errno = 0;
 666                 u = getpwnam(SetUser.c_str());
 667
 668                 if (!u)
 669                 {
 670                         this->Logs->Log("SETGUID", DEFAULT, "getpwnam() failed (bad user?): %s", strerror(errno));
 671                         this->QuickExit(0);
 672                 }
 673
 674                 int ret = setuid(u->pw_uid);
 675
 676                 if (ret == -1)
 677                 {
 678                         this->Logs->Log("SETGUID", DEFAULT, "setuid() failed (bad user?): %s", strerror(errno));
 679                         this->QuickExit(0);
 680                 }
 681         }
 682 #endif
 683
 684         this->WritePID(Config->PID);
 685 }
 686
 687 int InspIRCd::Run()
 688 {
 689         /* See if we're supposed to be running the test suite rather than entering the mainloop */
 690         if (Config->cmdline.TestSuite)
 691         {
 692                 TestSuite* ts = new TestSuite;
 693                 delete ts;
 694                 Exit(0);
 695         }
 696
 697         while (true)
 698         {
 699 #ifndef WIN32
 700                 static rusage ru;
 701 #else
 702                 static time_t uptime;
 703                 static struct tm * stime;
 704                 static char window_title[100];
 705 #endif
 706
 707                 /* Check if there is a config thread which has finished executing but has not yet been freed */
 708                 if (this->ConfigThread && this->ConfigThread->IsDone())
 709                 {
 710                         /* Rehash has completed */
 711                         this->Logs->Log("CONFIG",DEBUG,"Detected ConfigThread exiting, tidying up...");
 712
 713                         this->ConfigThread->Finish();
 714
 715                         ConfigThread->join();
 716                         delete ConfigThread;
 717                         ConfigThread = NULL;
 718                 }
 719
 720                 /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
 721                  * Once per loop iteration is pleanty.
 722                  */
 723                 OLDTIME = TIME;
 724                 TIME = time(NULL);
 725
 726                 /* Run background module timers every few seconds
 727                  * (the docs say modules shouldnt rely on accurate
 728                  * timing using this event, so we dont have to
 729                  * time this exactly).
 730                  */
 731                 if (TIME != OLDTIME)
 732                 {
 733                         /* Allow a buffer of two seconds drift on this so that ntpdate etc dont harass admins */
 734                         if (TIME < OLDTIME - 2)
 735                         {
 736                                 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %lu secs.", (unsigned long)OLDTIME-TIME);
 737                         }
 738                         else if (TIME > OLDTIME + 2)
 739                         {
 740                                 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is jumping FORWARDS! Clock skipped %lu secs.", (unsigned long)TIME - OLDTIME);
 741                         }
 742
 743                         if ((TIME % 3600) == 0)
 744                         {
 745                                 this->RehashUsersAndChans();
 746                                 FOREACH_MOD(I_OnGarbageCollect, OnGarbageCollect());
 747                         }
 748
 749                         Timers->TickTimers(TIME);
 750                         this->DoBackgroundUserStuff();
 751
 752                         if ((TIME % 5) == 0)
 753                         {
 754                                 FOREACH_MOD(I_OnBackgroundTimer,OnBackgroundTimer(TIME));
 755                                 SNO->FlushSnotices();
 756                         }
 757 #ifndef WIN32
 758                         /* Same change as in cmd_stats.cpp, use RUSAGE_SELF rather than '0' -- Om */
 759                         if (!getrusage(RUSAGE_SELF, &ru))
 760                         {
 761                                 gettimeofday(&this->stats->LastSampled, NULL);
 762                                 this->stats->LastCPU = ru.ru_utime;
 763                         }
 764 #else
 765                         WindowsIPC->Check();
 766 #endif
 767                 }
 768
 769                 /* Call the socket engine to wait on the active
 770                  * file descriptors. The socket engine has everything's
 771                  * descriptors in its list... dns, modules, users,
 772                  * servers... so its nice and easy, just one call.
 773                  * This will cause any read or write events to be
 774                  * dispatched to their handlers.
 775                  */
 776                 this->SE->DispatchTrialWrites();
 777                 this->SE->DispatchEvents();
 778
 779                 /* if any users were quit, take them out */
 780                 GlobalCulls.Apply();
 781                 AtomicActions.Run();
 782
 783                 if (this->s_signal)
 784                 {
 785                         this->SignalHandler(s_signal);
 786                         this->s_signal = 0;
 787                 }
 788         }
 789
 790         return 0;
 791 }
 792
 793 /**********************************************************************************/
 794
 795 /**
 796  * An ircd in five lines! bwahahaha. ahahahahaha. ahahah *cough*.
 797  */
 798
 799 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 800  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 801  * registration timeout maximum seconds)
 802  */
 803 bool InspIRCd::AllModulesReportReady(LocalUser* user)
 804 {
 805         ModResult res;
 806         FIRST_MOD_RESULT(OnCheckReady, res, (user));
 807         return (res == MOD_RES_PASSTHRU);
 808 }
 809
 810 time_t InspIRCd::Time()
 811 {
 812         return TIME;
 813 }
 814
 815 void InspIRCd::SetSignal(int signal)
 816 {
 817         *mysig = signal;
 818 }
 819
 820 /* On posix systems, the flow of the program starts right here, with
 821  * ENTRYPOINT being a #define that defines main(). On Windows, ENTRYPOINT
 822  * defines smain() and the real main() is in the service code under
 823  * win32service.cpp. This allows the service control manager to control
 824  * the process where we are running as a windows service.
 825  */
 826 ENTRYPOINT
 827 {
 828         new InspIRCd(argc, argv);
 829         mysig = &ServerInstance->s_signal;
 830         ServerInstance->Run();
 831         delete ServerInstance;
 832         return 0;
 833 }