src/inspircd.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
   6  * See: http://wiki.inspircd.org/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *          the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 /* $Core */
  15 #include "inspircd.h"
  16 #include "inspircd_version.h"
  17 #include <signal.h>
  18
  19 #ifndef WIN32
  20         #include <dirent.h>
  21         #include <unistd.h>
  22         #include <sys/resource.h>
  23         #include <dlfcn.h>
  24         #include <getopt.h>
  25
  26         /* Some systems don't define RUSAGE_SELF. This should fix them. */
  27         #ifndef RUSAGE_SELF
  28                 #define RUSAGE_SELF 0
  29         #endif
  30
  31         #include <pwd.h> // setuid
  32         #include <grp.h> // setgid
  33 #endif
  34
  35 #include <fstream>
  36 #include "xline.h"
  37 #include "bancache.h"
  38 #include "socketengine.h"
  39 #include "socket.h"
  40 #include "command_parse.h"
  41 #include "exitcodes.h"
  42 #include "caller.h"
  43 #include "testsuite.h"
  44
  45 InspIRCd* ServerInstance = NULL;
  46 int* mysig = NULL;
  47
  48 /** Seperate from the other casemap tables so that code *can* still exclusively rely on RFC casemapping
  49  * if it must.
  50  *
  51  * This is provided as a pointer so that modules can change it to their custom mapping tables,
  52  * e.g. for national character support.
  53  */
  54 unsigned const char *national_case_insensitive_map = rfc_case_insensitive_map;
  55
  56
  57 /* Moved from exitcodes.h -- due to duplicate symbols -- Burlex
  58  * XXX this is a bit ugly. -- w00t
  59  */
  60 const char* ExitCodes[] =
  61 {
  62                 "No error", /* 0 */
  63                 "DIE command", /* 1 */
  64                 "execv() failed", /* 2 */
  65                 "Internal error", /* 3 */
  66                 "Config file error", /* 4 */
  67                 "Logfile error", /* 5 */
  68                 "POSIX fork failed", /* 6 */
  69                 "Bad commandline parameters", /* 7 */
  70                 "No ports could be bound", /* 8 */
  71                 "Can't write PID file", /* 9 */
  72                 "SocketEngine could not initialize", /* 10 */
  73                 "Refusing to start up as root", /* 11 */
  74                 "Found a <die> tag!", /* 12 */
  75                 "Couldn't load module on startup", /* 13 */
  76                 "Could not create windows forked process", /* 14 */
  77                 "Received SIGTERM", /* 15 */
  78                 "Bad command handler loaded", /* 16 */
  79                 "RegisterServiceCtrlHandler failed", /* 17 */
  80                 "UpdateSCMStatus failed", /* 18 */
  81                 "CreateEvent failed" /* 19 */
  82 };
  83
  84 template<typename T> static void DeleteZero(T*&n)
  85 {
  86         if (n != NULL)
  87         {
  88                 delete n;
  89                 n = NULL;
  90         }
  91 }
  92
  93 void InspIRCd::Cleanup()
  94 {
  95         if (Config)
  96         {
  97                 for (unsigned int i = 0; i < ports.size(); i++)
  98                 {
  99                         /* This calls the constructor and closes the listening socket */
 100                         delete ports[i];
 101                 }
 102
 103                 ports.clear();
 104         }
 105
 106         /* Close all client sockets, or the new process inherits them */
 107         std::vector<User*>::reverse_iterator i = Users->local_users.rbegin();
 108         while (i != this->Users->local_users.rend())
 109         {
 110                 User* u = *i++;
 111                 Users->QuitUser(u, "Server shutdown");
 112         }
 113
 114         GlobalCulls.Apply();
 115         Modules->UnloadAll();
 116
 117         /* Delete objects dynamically allocated in constructor (destructor would be more appropriate, but we're likely exiting) */
 118         /* Must be deleted before modes as it decrements modelines */
 119         DeleteZero(this->FakeClient);
 120         DeleteZero(this->Users);
 121         DeleteZero(this->Modes);
 122         DeleteZero(this->XLines);
 123         DeleteZero(this->Parser);
 124         DeleteZero(this->stats);
 125         DeleteZero(this->Modules);
 126         DeleteZero(this->BanCache);
 127         DeleteZero(this->SNO);
 128         DeleteZero(this->Config);
 129         DeleteZero(this->Res);
 130         DeleteZero(this->chanlist);
 131         DeleteZero(this->PI);
 132         DeleteZero(this->Threads);
 133         DeleteZero(this->Timers);
 134         DeleteZero(this->SE);
 135         /* Close logging */
 136         this->Logs->CloseLogs();
 137         DeleteZero(this->Logs);
 138 }
 139
 140 void InspIRCd::Restart(const std::string &reason)
 141 {
 142         /* SendError flushes each client's queue,
 143          * regardless of writeability state
 144          */
 145         this->SendError(reason);
 146
 147         /* Figure out our filename (if theyve renamed it, we're boned) */
 148         std::string me;
 149
 150 #ifdef WINDOWS
 151         char module[MAX_PATH];
 152         if (GetModuleFileName(NULL, module, MAX_PATH))
 153                 me = module;
 154 #else
 155         me = Config->MyDir + "/inspircd";
 156 #endif
 157
 158         char** argv = Config->argv;
 159
 160         this->Cleanup();
 161
 162         if (execv(me.c_str(), argv) == -1)
 163         {
 164                 /* Will raise a SIGABRT if not trapped */
 165                 throw CoreException(std::string("Failed to execv()! error: ") + strerror(errno));
 166         }
 167 }
 168
 169 void InspIRCd::ResetMaxBans()
 170 {
 171         for (chan_hash::const_iterator i = chanlist->begin(); i != chanlist->end(); i++)
 172                 i->second->ResetMaxBans();
 173 }
 174
 175 /** Because hash_map doesnt free its buckets when we delete items (this is a 'feature')
 176  * we must occasionally rehash the hash (yes really).
 177  * We do this by copying the entries from the old hash to a new hash, causing all
 178  * empty buckets to be weeded out of the hash. We dont do this on a timer, as its
 179  * very expensive, so instead we do it when the user types /REHASH and expects a
 180  * short delay anyway.
 181  */
 182 void InspIRCd::RehashUsersAndChans()
 183 {
 184         user_hash* old_users = this->Users->clientlist;
 185         user_hash* old_uuid  = this->Users->uuidlist;
 186         chan_hash* old_chans = this->chanlist;
 187
 188         this->Users->clientlist = new user_hash();
 189         this->Users->uuidlist = new user_hash();
 190         this->chanlist = new chan_hash();
 191
 192         for (user_hash::const_iterator n = old_users->begin(); n != old_users->end(); n++)
 193                 this->Users->clientlist->insert(*n);
 194
 195         delete old_users;
 196
 197         for (user_hash::const_iterator n = old_uuid->begin(); n != old_uuid->end(); n++)
 198                 this->Users->uuidlist->insert(*n);
 199
 200         delete old_uuid;
 201
 202         for (chan_hash::const_iterator n = old_chans->begin(); n != old_chans->end(); n++)
 203                 this->chanlist->insert(*n);
 204
 205         delete old_chans;
 206 }
 207
 208 void InspIRCd::SetSignals()
 209 {
 210 #ifndef WIN32
 211         signal(SIGALRM, SIG_IGN);
 212         signal(SIGHUP, InspIRCd::SetSignal);
 213         signal(SIGPIPE, SIG_IGN);
 214         signal(SIGCHLD, SIG_IGN);
 215         /* We want E2BIG not a signal! */
 216         signal(SIGXFSZ, SIG_IGN);
 217 #endif
 218         signal(SIGTERM, InspIRCd::SetSignal);
 219 }
 220
 221 void InspIRCd::QuickExit(int status)
 222 {
 223         exit(0);
 224 }
 225
 226 bool InspIRCd::DaemonSeed()
 227 {
 228 #ifdef WINDOWS
 229         printf_c("InspIRCd Process ID: \033[1;32m%lu\033[0m\n", GetCurrentProcessId());
 230         return true;
 231 #else
 232         signal(SIGTERM, InspIRCd::QuickExit);
 233
 234         int childpid;
 235         if ((childpid = fork ()) < 0)
 236                 return false;
 237         else if (childpid > 0)
 238         {
 239                 /* We wait here for the child process to kill us,
 240                  * so that the shell prompt doesnt come back over
 241                  * the output.
 242                  * Sending a kill with a signal of 0 just checks
 243                  * if the child pid is still around. If theyre not,
 244                  * they threw an error and we should give up.
 245                  */
 246                 while (kill(childpid, 0) != -1)
 247                         sleep(1);
 248                 exit(0);
 249         }
 250         setsid ();
 251         umask (007);
 252         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 253
 254         signal(SIGTERM, InspIRCd::SetSignal);
 255
 256         rlimit rl;
 257         if (getrlimit(RLIMIT_CORE, &rl) == -1)
 258         {
 259                 this->Logs->Log("STARTUP",DEFAULT,"Failed to getrlimit()!");
 260                 return false;
 261         }
 262         rl.rlim_cur = rl.rlim_max;
 263
 264         if (setrlimit(RLIMIT_CORE, &rl) == -1)
 265                         this->Logs->Log("STARTUP",DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 266
 267         return true;
 268 #endif
 269 }
 270
 271 void InspIRCd::WritePID(const std::string &filename)
 272 {
 273         std::string fname(filename);
 274         if (fname.empty())
 275                 fname = "data/inspircd.pid";
 276         std::ofstream outfile(fname.c_str());
 277         if (outfile.is_open())
 278         {
 279                 outfile << getpid();
 280                 outfile.close();
 281         }
 282         else
 283         {
 284                 printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
 285                 this->Logs->Log("STARTUP",DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
 286                 Exit(EXIT_STATUS_PID);
 287         }
 288 }
 289
 290 InspIRCd::InspIRCd(int argc, char** argv) :
 291          ConfigFileName("inspircd.conf"),
 292
 293          /* Functor pointer initialisation.
 294           *
 295           * THIS MUST MATCH THE ORDER OF DECLARATION OF THE FUNCTORS, e.g. the methods
 296           * themselves within the class.
 297           */
 298          NICKForced("NICKForced", NULL),
 299          OperQuit("OperQuit", NULL),
 300          IsChannel(&HandleIsChannel),
 301          IsSID(&HandleIsSID),
 302          Rehash(&HandleRehash),
 303          IsNick(&HandleIsNick),
 304          IsIdent(&HandleIsIdent),
 305          FloodQuitUser(&HandleFloodQuitUser)
 306 {
 307 #ifdef WIN32
 308         // Strict, frequent checking of memory on debug builds
 309         _CrtSetDbgFlag ( _CRTDBG_CHECK_ALWAYS_DF | _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
 310
 311         // Avoid erroneous frees on early exit
 312         WindowsIPC = 0;
 313 #endif
 314
 315         ServerInstance = this;
 316
 317         Extensions.Register(&NICKForced);
 318         Extensions.Register(&OperQuit);
 319
 320         FailedPortList pl;
 321         int do_version = 0, do_nofork = 0, do_debug = 0,
 322             do_nolog = 0, do_root = 0, do_testsuite = 0;    /* flag variables */
 323         int c = 0;
 324
 325         // Initialize so that if we exit before proper initialization they're not deleted
 326         this->Logs = 0;
 327         this->Threads = 0;
 328         this->PI = 0;
 329         this->Users = 0;
 330         this->chanlist = 0;
 331         this->Config = 0;
 332         this->SNO = 0;
 333         this->BanCache = 0;
 334         this->Modules = 0;
 335         this->stats = 0;
 336         this->Timers = 0;
 337         this->Parser = 0;
 338         this->XLines = 0;
 339         this->Modes = 0;
 340         this->Res = 0;
 341         this->ConfigThread = NULL;
 342
 343         // Initialise TIME
 344         this->TIME = time(NULL);
 345
 346         // This must be created first, so other parts of Insp can use it while starting up
 347         this->Logs = new LogManager;
 348
 349         SE = CreateSocketEngine();
 350
 351         this->Threads = new ThreadEngine;
 352
 353         /* Default implementation does nothing */
 354         this->PI = new ProtocolInterface;
 355
 356         this->s_signal = 0;
 357
 358         // Create base manager classes early, so nothing breaks
 359         this->Users = new UserManager;
 360
 361         this->Users->unregistered_count = 0;
 362
 363         this->Users->clientlist = new user_hash();
 364         this->Users->uuidlist = new user_hash();
 365         this->chanlist = new chan_hash();
 366
 367         this->Config = new ServerConfig;
 368         this->SNO = new SnomaskManager;
 369         this->BanCache = new BanCacheManager;
 370         this->Modules = new ModuleManager();
 371         this->stats = new serverstats();
 372         this->Timers = new TimerManager;
 373         this->Parser = new CommandParser;
 374         this->XLines = new XLineManager;
 375
 376         this->Config->argv = argv;
 377         this->Config->argc = argc;
 378
 379         this->TIME = this->OLDTIME = this->startup_time = time(NULL);
 380         srand(this->TIME);
 381
 382         *this->LogFileName = 0;
 383
 384         struct option longopts[] =
 385         {
 386                 { "nofork",     no_argument,            &do_nofork,     1       },
 387                 { "logfile",    required_argument,      NULL,           'f'     },
 388                 { "config",     required_argument,      NULL,           'c'     },
 389                 { "debug",      no_argument,            &do_debug,      1       },
 390                 { "nolog",      no_argument,            &do_nolog,      1       },
 391                 { "runasroot",  no_argument,            &do_root,       1       },
 392                 { "version",    no_argument,            &do_version,    1       },
 393                 { "testsuite",  no_argument,            &do_testsuite,  1       },
 394                 { 0, 0, 0, 0 }
 395         };
 396
 397         int index;
 398         while ((c = getopt_long_only(argc, argv, ":f:", longopts, &index)) != -1)
 399         {
 400                 switch (c)
 401                 {
 402                         case 'f':
 403                                 /* Log filename was set */
 404                                 strlcpy(LogFileName, optarg, MAXBUF);
 405                         break;
 406                         case 'c':
 407                                 /* Config filename was set */
 408                                 ConfigFileName = optarg;
 409                         break;
 410                         case 0:
 411                                 /* getopt_long_only() set an int variable, just keep going */
 412                         break;
 413                         case '?':
 414                                 /* Unknown parameter */
 415                         default:
 416                                 /* Fall through to handle other weird values too */
 417                                 printf("Unknown parameter '%s'\n", argv[optind-1]);
 418                                 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])), " ");
 419                                 Exit(EXIT_STATUS_ARGV);
 420                         break;
 421                 }
 422         }
 423
 424         if (do_testsuite)
 425                 do_nofork = do_debug = true;
 426
 427         if (do_version)
 428         {
 429                 printf("\n%s r%s\n", VERSION, REVISION);
 430                 Exit(EXIT_STATUS_NOERROR);
 431         }
 432
 433 #ifdef WIN32
 434
 435         // Handle forking
 436         if(!do_nofork)
 437         {
 438                 DWORD ExitCode = WindowsForkStart();
 439                 if(ExitCode)
 440                         exit(ExitCode);
 441         }
 442
 443         // Set up winsock
 444         WSADATA wsadata;
 445         WSAStartup(MAKEWORD(2,0), &wsadata);
 446         ChangeWindowsSpecificPointers();
 447 #endif
 448
 449         /* Set the finished argument values */
 450         Config->nofork = do_nofork;
 451         Config->forcedebug = do_debug;
 452         Config->writelog = !do_nolog;
 453         Config->TestSuite = do_testsuite;
 454
 455         if (!this->OpenLog(argv, argc))
 456         {
 457                 printf("ERROR: Could not open logfile %s: %s\n\n", Config->logpath.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->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->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                         fclose(stdout);
 603                 }
 604                 else
 605                 {
 606                         Logs->Log("STARTUP", DEFAULT,"Keeping pseudo-tty open as we are running in the foreground.");
 607                 }
 608         }
 609 #else
 610         WindowsIPC = new IPC;
 611         if(!Config->nofork)
 612         {
 613                 WindowsForkKillOwner();
 614                 FreeConsole();
 615         }
 616         /* Set win32 service as running, if we are running as a service */
 617         SetServiceRunning();
 618 #endif
 619
 620         Logs->Log("STARTUP", DEFAULT, "Startup complete as '%s'[%s], %d max open sockets", Config->ServerName.c_str(),Config->GetSID().c_str(), SE->GetMaxFds());
 621
 622 #ifndef WIN32
 623         if (!Config->SetGroup.empty())
 624         {
 625                 int ret;
 626
 627                 // setgroups
 628                 ret = setgroups(0, NULL);
 629
 630                 if (ret == -1)
 631                 {
 632                         this->Logs->Log("SETGROUPS", DEFAULT, "setgroups() failed (wtf?): %s", strerror(errno));
 633                         this->QuickExit(0);
 634                 }
 635
 636                 // setgid
 637                 struct group *g;
 638
 639                 errno = 0;
 640                 g = getgrnam(this->Config->SetGroup.c_str());
 641
 642                 if (!g)
 643                 {
 644                         this->Logs->Log("SETGUID", DEFAULT, "getgrnam() failed (bad user?): %s", strerror(errno));
 645                         this->QuickExit(0);
 646                 }
 647
 648                 ret = setgid(g->gr_gid);
 649
 650                 if (ret == -1)
 651                 {
 652                         this->Logs->Log("SETGUID", DEFAULT, "setgid() failed (bad user?): %s", strerror(errno));
 653                         this->QuickExit(0);
 654                 }
 655         }
 656
 657         if (!Config->SetUser.empty())
 658         {
 659                 // setuid
 660                 struct passwd *u;
 661
 662                 errno = 0;
 663                 u = getpwnam(this->Config->SetUser.c_str());
 664
 665                 if (!u)
 666                 {
 667                         this->Logs->Log("SETGUID", DEFAULT, "getpwnam() failed (bad user?): %s", strerror(errno));
 668                         this->QuickExit(0);
 669                 }
 670
 671                 int ret = setuid(u->pw_uid);
 672
 673                 if (ret == -1)
 674                 {
 675                         this->Logs->Log("SETGUID", DEFAULT, "setuid() failed (bad user?): %s", strerror(errno));
 676                         this->QuickExit(0);
 677                 }
 678         }
 679 #endif
 680
 681         this->WritePID(Config->PID);
 682 }
 683
 684 int InspIRCd::Run()
 685 {
 686         /* See if we're supposed to be running the test suite rather than entering the mainloop */
 687         if (Config->TestSuite)
 688         {
 689                 TestSuite* ts = new TestSuite;
 690                 delete ts;
 691                 Exit(0);
 692         }
 693
 694         while (true)
 695         {
 696 #ifndef WIN32
 697                 static rusage ru;
 698 #else
 699                 static time_t uptime;
 700                 static struct tm * stime;
 701                 static char window_title[100];
 702 #endif
 703
 704                 /* Check if there is a config thread which has finished executing but has not yet been freed */
 705                 if (this->ConfigThread && this->ConfigThread->IsDone())
 706                 {
 707                         /* Rehash has completed */
 708                         this->Logs->Log("CONFIG",DEBUG,"Detected ConfigThread exiting, tidying up...");
 709
 710                         this->ConfigThread->Finish();
 711
 712                         ConfigThread->join();
 713                         delete ConfigThread;
 714                         ConfigThread = NULL;
 715                 }
 716
 717                 /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
 718                  * Once per loop iteration is pleanty.
 719                  */
 720                 OLDTIME = TIME;
 721                 TIME = time(NULL);
 722
 723                 /* Run background module timers every few seconds
 724                  * (the docs say modules shouldnt rely on accurate
 725                  * timing using this event, so we dont have to
 726                  * time this exactly).
 727                  */
 728                 if (TIME != OLDTIME)
 729                 {
 730                         /* Allow a buffer of two seconds drift on this so that ntpdate etc dont harass admins */
 731                         if (TIME < OLDTIME - 2)
 732                         {
 733                                 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %lu secs.", (unsigned long)OLDTIME-TIME);
 734                         }
 735                         else if (TIME > OLDTIME + 2)
 736                         {
 737                                 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is jumping FORWARDS! Clock skipped %lu secs.", (unsigned long)TIME - OLDTIME);
 738                         }
 739
 740                         if ((TIME % 3600) == 0)
 741                         {
 742                                 this->RehashUsersAndChans();
 743                                 FOREACH_MOD(I_OnGarbageCollect, OnGarbageCollect());
 744                         }
 745
 746                         Timers->TickTimers(TIME);
 747                         this->DoBackgroundUserStuff();
 748
 749                         if ((TIME % 5) == 0)
 750                         {
 751                                 FOREACH_MOD(I_OnBackgroundTimer,OnBackgroundTimer(TIME));
 752                                 SNO->FlushSnotices();
 753                         }
 754 #ifndef WIN32
 755                         /* Same change as in cmd_stats.cpp, use RUSAGE_SELF rather than '0' -- Om */
 756                         if (!getrusage(RUSAGE_SELF, &ru))
 757                         {
 758                                 gettimeofday(&this->stats->LastSampled, NULL);
 759                                 this->stats->LastCPU = ru.ru_utime;
 760                         }
 761 #else
 762                         WindowsIPC->Check();
 763 #endif
 764                 }
 765
 766                 /* Call the socket engine to wait on the active
 767                  * file descriptors. The socket engine has everything's
 768                  * descriptors in its list... dns, modules, users,
 769                  * servers... so its nice and easy, just one call.
 770                  * This will cause any read or write events to be
 771                  * dispatched to their handlers.
 772                  */
 773                 this->SE->DispatchTrialWrites();
 774                 this->SE->DispatchEvents();
 775
 776                 /* if any users were quit, take them out */
 777                 GlobalCulls.Apply();
 778                 AtomicActions.Run();
 779
 780                 if (this->s_signal)
 781                 {
 782                         this->SignalHandler(s_signal);
 783                         this->s_signal = 0;
 784                 }
 785         }
 786
 787         return 0;
 788 }
 789
 790 /**********************************************************************************/
 791
 792 /**
 793  * An ircd in five lines! bwahahaha. ahahahahaha. ahahah *cough*.
 794  */
 795
 796 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 797  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 798  * registration timeout maximum seconds)
 799  */
 800 bool InspIRCd::AllModulesReportReady(User* user)
 801 {
 802         ModResult res;
 803         FIRST_MOD_RESULT(OnCheckReady, res, (user));
 804         return (res == MOD_RES_PASSTHRU);
 805 }
 806
 807 time_t InspIRCd::Time()
 808 {
 809         return TIME;
 810 }
 811
 812 void InspIRCd::SetSignal(int signal)
 813 {
 814         *mysig = signal;
 815 }
 816
 817 /* On posix systems, the flow of the program starts right here, with
 818  * ENTRYPOINT being a #define that defines main(). On Windows, ENTRYPOINT
 819  * defines smain() and the real main() is in the service code under
 820  * win32service.cpp. This allows the service control manager to control
 821  * the process where we are running as a windows service.
 822  */
 823 ENTRYPOINT
 824 {
 825         new InspIRCd(argc, argv);
 826         mysig = &ServerInstance->s_signal;
 827         ServerInstance->Run();
 828         delete ServerInstance;
 829         return 0;
 830 }