src/inspircd.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2012 William Pitcock <nenolod@dereferenced.org>
   5  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
   6  *   Copyright (C) 2003-2008 Craig Edwards <craigedwards@brainbox.cc>
   7  *   Copyright (C) 2008 Uli Schlachter <psychon@znc.in>
   8  *   Copyright (C) 2006-2008 Robin Burchell <robin+git@viroteck.net>
   9  *   Copyright (C) 2006-2007 Oliver Lupton <oliverlupton@gmail.com>
  10  *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
  11  *   Copyright (C) 2007 Burlex <???@???>
  12  *   Copyright (C) 2003 Craig McLure <craig@chatspike.net>
  13  *   Copyright (C) 2003 randomdan <???@???>
  14  *
  15  * This file is part of InspIRCd.  InspIRCd is free software: you can
  16  * redistribute it and/or modify it under the terms of the GNU General Public
  17  * License as published by the Free Software Foundation, version 2.
  18  *
  19  * This program is distributed in the hope that it will be useful, but WITHOUT
  20  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  21  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  22  * details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  26  */
  27
  28
  29 #include "inspircd.h"
  30 #include <signal.h>
  31
  32 #ifndef _WIN32
  33         #include <unistd.h>
  34         #include <sys/resource.h>
  35         #include <dlfcn.h>
  36         #include <getopt.h>
  37         #include <pwd.h> // setuid
  38         #include <grp.h> // setgid
  39 #else
  40         WORD g_wOriginalColors;
  41         WORD g_wBackgroundColor;
  42         HANDLE g_hStdout;
  43 #endif
  44
  45 #include <fstream>
  46 #include <iostream>
  47 #include "xline.h"
  48 #include "exitcodes.h"
  49
  50 InspIRCd* ServerInstance = NULL;
  51
  52 /** Seperate from the other casemap tables so that code *can* still exclusively rely on RFC casemapping
  53  * if it must.
  54  *
  55  * This is provided as a pointer so that modules can change it to their custom mapping tables,
  56  * e.g. for national character support.
  57  */
  58 unsigned const char *national_case_insensitive_map = rfc_case_insensitive_map;
  59
  60
  61 /* Moved from exitcodes.h -- due to duplicate symbols -- Burlex
  62  * XXX this is a bit ugly. -- w00t
  63  */
  64 const char* ExitCodes[] =
  65 {
  66                 "No error",                                                             // 0
  67                 "DIE command",                                                  // 1
  68                 "Config file error",                                    // 2
  69                 "Logfile error",                                                // 3
  70                 "POSIX fork failed",                                    // 4
  71                 "Bad commandline parameters",                   // 5
  72                 "Can't write PID file",                                 // 6
  73                 "SocketEngine could not initialize",    // 7
  74                 "Refusing to start up as root",                 // 8
  75                 "Couldn't load module on startup",              // 9
  76                 "Received SIGTERM"                                              // 10
  77 };
  78
  79 namespace
  80 {
  81         void VoidSignalHandler(int);
  82
  83         // Collects performance statistics for the STATS command.
  84         void CollectStats()
  85         {
  86 #ifndef _WIN32
  87                 static rusage ru;
  88                 if (getrusage(RUSAGE_SELF, &ru) == -1)
  89                         return; // Should never happen.
  90
  91                 ServerInstance->stats.LastSampled.tv_sec = ServerInstance->Time();
  92                 ServerInstance->stats.LastSampled.tv_nsec = ServerInstance->Time_ns();
  93                 ServerInstance->stats.LastCPU = ru.ru_utime;
  94 #else
  95                 if (!QueryPerformanceCounter(&ServerInstance->stats.LastSampled))
  96                         return; // Should never happen.
  97
  98                 FILETIME CreationTime;
  99                 FILETIME ExitTime;
 100                 FILETIME KernelTime;
 101                 FILETIME UserTime;
 102                 GetProcessTimes(GetCurrentProcess(), &CreationTime, &ExitTime, &KernelTime, &UserTime);
 103
 104                 ServerInstance->stats.LastCPU.dwHighDateTime = KernelTime.dwHighDateTime + UserTime.dwHighDateTime;
 105                 ServerInstance->stats.LastCPU.dwLowDateTime = KernelTime.dwLowDateTime + UserTime.dwLowDateTime;
 106 #endif
 107         }
 108
 109         // Deletes a pointer and then zeroes it.
 110         template<typename T>
 111         void DeleteZero(T*& pr)
 112         {
 113                 T* p = pr;
 114                 pr = NULL;
 115                 delete p;
 116         }
 117
 118         // Drops to the unprivileged user/group specified in <security:runas{user,group}>.
 119         void DropRoot()
 120         {
 121 #ifndef _WIN32
 122                 ConfigTag* security = ServerInstance->Config->ConfValue("security");
 123
 124                 const std::string SetGroup = security->getString("runasgroup");
 125                 if (!SetGroup.empty())
 126                 {
 127                         errno = 0;
 128                         if (setgroups(0, NULL) == -1)
 129                         {
 130                                 ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "setgroups() failed (wtf?): %s", strerror(errno));
 131                                 exit(EXIT_STATUS_CONFIG);
 132                         }
 133
 134                         struct group* g = getgrnam(SetGroup.c_str());
 135                         if (!g)
 136                         {
 137                                 ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "getgrnam(%s) failed (wrong group?): %s", SetGroup.c_str(), strerror(errno));
 138                                 exit(EXIT_STATUS_CONFIG);
 139                         }
 140
 141                         if (setgid(g->gr_gid) == -1)
 142                         {
 143                                 ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "setgid(%d) failed (wrong group?): %s", g->gr_gid, strerror(errno));
 144                                 exit(EXIT_STATUS_CONFIG);
 145                         }
 146                 }
 147
 148                 const std::string SetUser = security->getString("runasuser");
 149                 if (!SetUser.empty())
 150                 {
 151                         errno = 0;
 152                         struct passwd* u = getpwnam(SetUser.c_str());
 153                         if (!u)
 154                         {
 155                                 ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "getpwnam(%s) failed (wrong user?): %s", SetUser.c_str(), strerror(errno));
 156                                 exit(EXIT_STATUS_CONFIG);
 157                         }
 158
 159                         if (setuid(u->pw_uid) == -1)
 160                         {
 161                                 ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "setuid(%d) failed (wrong user?): %s", u->pw_uid, strerror(errno));
 162                                 exit(EXIT_STATUS_CONFIG);
 163                         }
 164                 }
 165 #endif
 166         }
 167
 168         // Attempts to fork into the background.
 169         bool ForkIntoBackground()
 170         {
 171 #ifndef _WIN32
 172                 // We use VoidSignalHandler whilst forking to avoid breaking daemon scripts
 173                 // if the parent process exits with SIGTERM (15) instead of EXIT_STATUS_NOERROR (0).
 174                 signal(SIGTERM, VoidSignalHandler);
 175
 176                 errno = 0;
 177                 int childpid = fork();
 178                 if (childpid < 0)
 179                 {
 180                         ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "fork() failed: %s", strerror(errno));
 181                         return false;
 182                 }
 183                 else if (childpid > 0)
 184                 {
 185                         // Wait until the child process kills the parent so that the shell prompt
 186                         // doesnt display over the output. Sending a kill with a signal of 0 just
 187                         // checks that the child pid is still running. If it is not then an error
 188                         // happened and the parent should exit.
 189                         while (kill(childpid, 0) != -1)
 190                                 sleep(1);
 191                         exit(EXIT_STATUS_NOERROR);
 192                 }
 193                 else
 194                 {
 195                         setsid();
 196                         signal(SIGTERM, InspIRCd::SetSignal);
 197                         SocketEngine::RecoverFromFork();
 198                 }
 199 #endif
 200                 return true;
 201         }
 202
 203         // Increase the size of a core dump file to improve debugging problems.
 204         void IncreaseCoreDumpSize()
 205         {
 206 #ifndef _WIN32
 207                 errno = 0;
 208                 rlimit rl;
 209                 if (getrlimit(RLIMIT_CORE, &rl) == -1)
 210                 {
 211                         ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "Unable to increase core dump size: getrlimit(RLIMIT_CORE) failed: %s", strerror(errno));
 212                         return;
 213                 }
 214
 215                 rl.rlim_cur = rl.rlim_max;
 216                 if (setrlimit(RLIMIT_CORE, &rl) == -1)
 217                         ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "Unable to increase core dump size: setrlimit(RLIMIT_CORE) failed: %s", strerror(errno));
 218 #endif
 219         }
 220
 221         // Seeds the random number generator if applicable.
 222         void SeedRng(timespec ts)
 223         {
 224 #if defined _WIN32
 225                 srand(ts.tv_nsec ^ ts.tv_sec);
 226 #elif !defined HAS_ARC4RANDOM_BUF
 227                 srandom(ts.tv_nsec ^ ts.tv_sec);
 228 #endif
 229         }
 230
 231         // Sets handlers for various process signals.
 232         void SetSignals()
 233         {
 234 #ifndef _WIN32
 235                 signal(SIGALRM, SIG_IGN);
 236                 signal(SIGCHLD, SIG_IGN);
 237                 signal(SIGHUP, InspIRCd::SetSignal);
 238                 signal(SIGPIPE, SIG_IGN);
 239                 signal(SIGUSR1, SIG_IGN);
 240                 signal(SIGUSR2, SIG_IGN);
 241                 signal(SIGXFSZ, SIG_IGN);
 242 #endif
 243                 signal(SIGTERM, InspIRCd::SetSignal);
 244         }
 245
 246         // Required for returning the proper value of EXIT_SUCCESS for the parent process.
 247         void VoidSignalHandler(int)
 248         {
 249                 exit(EXIT_STATUS_NOERROR);
 250         }
 251 }
 252
 253 void InspIRCd::Cleanup()
 254 {
 255         // Close all listening sockets
 256         for (unsigned int i = 0; i < ports.size(); i++)
 257         {
 258                 ports[i]->cull();
 259                 delete ports[i];
 260         }
 261         ports.clear();
 262
 263         // Tell modules that we're shutting down.
 264         const std::string quitmsg = "Server shutting down";
 265         FOREACH_MOD(OnShutdown, (quitmsg));
 266
 267         // Disconnect all local users
 268         const UserManager::LocalList& list = Users.GetLocalUsers();
 269         while (!list.empty())
 270                 ServerInstance->Users.QuitUser(list.front(), quitmsg);
 271
 272         GlobalCulls.Apply();
 273         Modules->UnloadAll();
 274
 275         /* Delete objects dynamically allocated in constructor (destructor would be more appropriate, but we're likely exiting) */
 276         /* Must be deleted before modes as it decrements modelines */
 277         if (FakeClient)
 278         {
 279                 delete FakeClient->server;
 280                 FakeClient->cull();
 281         }
 282         DeleteZero(this->FakeClient);
 283         DeleteZero(this->XLines);
 284         DeleteZero(this->Config);
 285         SocketEngine::Deinit();
 286         Logs->CloseLogs();
 287 }
 288
 289 void InspIRCd::WritePID(const std::string& filename, bool exitonfail)
 290 {
 291 #ifndef _WIN32
 292         if (!ServerInstance->Config->cmdline.writepid)
 293         {
 294                 this->Logs->Log("STARTUP", LOG_DEFAULT, "--nopid specified on command line; PID file not written.");
 295                 return;
 296         }
 297
 298         std::string fname = ServerInstance->Config->Paths.PrependData(filename.empty() ? "inspircd.pid" : filename);
 299         std::ofstream outfile(fname.c_str());
 300         if (outfile.is_open())
 301         {
 302                 outfile << getpid();
 303                 outfile.close();
 304         }
 305         else
 306         {
 307                 if (exitonfail)
 308                         std::cout << "Failed to write PID-file '" << fname << "', exiting." << std::endl;
 309                 this->Logs->Log("STARTUP", LOG_DEFAULT, "Failed to write PID-file '%s'%s", fname.c_str(), (exitonfail ? ", exiting." : ""));
 310                 if (exitonfail)
 311                         Exit(EXIT_STATUS_PID);
 312         }
 313 #endif
 314 }
 315
 316 InspIRCd::InspIRCd(int argc, char** argv)
 317         : FakeClient(NULL)
 318         , ConfigFileName(INSPIRCD_CONFIG_PATH "/inspircd.conf")
 319         , ConfigThread(NULL)
 320         , Config(NULL)
 321         , XLines(NULL)
 322         , PI(&DefaultProtocolInterface)
 323         , GenRandom(&DefaultGenRandom)
 324         , IsChannel(&DefaultIsChannel)
 325         , IsNick(&DefaultIsNick)
 326         , IsIdent(&DefaultIsIdent)
 327 {
 328         ServerInstance = this;
 329
 330         UpdateTime();
 331         this->startup_time = TIME.tv_sec;
 332
 333         IncreaseCoreDumpSize();
 334         SeedRng(TIME);
 335         SocketEngine::Init();
 336
 337         this->Config = new ServerConfig;
 338         dynamic_reference_base::reset_all();
 339         this->XLines = new XLineManager;
 340
 341         this->Config->cmdline.argv = argv;
 342         this->Config->cmdline.argc = argc;
 343
 344 #ifdef _WIN32
 345         // Initialize the console values
 346         g_hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
 347         CONSOLE_SCREEN_BUFFER_INFO bufinf;
 348         if(GetConsoleScreenBufferInfo(g_hStdout, &bufinf))
 349         {
 350                 g_wOriginalColors = bufinf.wAttributes & 0x00FF;
 351                 g_wBackgroundColor = bufinf.wAttributes & 0x00F0;
 352         }
 353         else
 354         {
 355                 g_wOriginalColors = FOREGROUND_RED|FOREGROUND_BLUE|FOREGROUND_GREEN;
 356                 g_wBackgroundColor = 0;
 357         }
 358 #endif
 359
 360         {
 361                 ServiceProvider* provs[] =
 362                 {
 363                         &rfcevents.numeric, &rfcevents.join, &rfcevents.part, &rfcevents.kick, &rfcevents.quit, &rfcevents.nick,
 364                         &rfcevents.mode, &rfcevents.topic, &rfcevents.privmsg, &rfcevents.invite, &rfcevents.ping, &rfcevents.pong,
 365                         &rfcevents.error
 366                 };
 367                 Modules.AddServices(provs, sizeof(provs)/sizeof(provs[0]));
 368         }
 369
 370         // Flag variables passed to getopt_long() later
 371         int do_version = 0, do_nofork = 0, do_debug = 0,
 372                 do_nolog = 0, do_nopid = 0, do_root = 0;
 373         struct option longopts[] =
 374         {
 375                 { "nofork",     no_argument,            &do_nofork,     1       },
 376                 { "config",     required_argument,      NULL,           'c'     },
 377                 { "debug",      no_argument,            &do_debug,      1       },
 378                 { "nolog",      no_argument,            &do_nolog,      1       },
 379                 { "nopid",      no_argument,            &do_nopid,      1       },
 380                 { "runasroot",  no_argument,            &do_root,       1       },
 381                 { "version",    no_argument,            &do_version,    1       },
 382                 { 0, 0, 0, 0 }
 383         };
 384
 385         int c;
 386         int index;
 387         while ((c = getopt_long(argc, argv, ":c:", longopts, &index)) != -1)
 388         {
 389                 switch (c)
 390                 {
 391                         case 'c':
 392                                 /* Config filename was set */
 393                                 ConfigFileName = optarg;
 394 #ifdef _WIN32
 395                                 TCHAR configPath[MAX_PATH + 1];
 396                                 if (GetFullPathName(optarg, MAX_PATH, configPath, NULL) > 0)
 397                                         ConfigFileName = configPath;
 398 #else
 399                                 char configPath[PATH_MAX + 1];
 400                                 if (realpath(optarg, configPath))
 401                                         ConfigFileName = configPath;
 402 #endif
 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                                 std::cout << "Unknown parameter '" << argv[optind-1] << "'" << std::endl;
 412                                 std::cout << "Usage: " << argv[0] << " [--nofork] [--nolog] [--nopid] [--debug] [--config <config>]" << std::endl <<
 413                                         std::string(static_cast<size_t>(8+strlen(argv[0])), ' ') << "[--runasroot] [--version]" << std::endl;
 414                                 Exit(EXIT_STATUS_ARGV);
 415                         break;
 416                 }
 417         }
 418
 419         if (do_version)
 420         {
 421                 std::cout << std::endl << INSPIRCD_VERSION << std::endl;
 422                 Exit(EXIT_STATUS_NOERROR);
 423         }
 424
 425 #ifdef _WIN32
 426         // Set up winsock
 427         WSADATA wsadata;
 428         WSAStartup(MAKEWORD(2,2), &wsadata);
 429 #endif
 430
 431         /* Set the finished argument values */
 432         Config->cmdline.nofork = (do_nofork != 0);
 433         Config->cmdline.forcedebug = (do_debug != 0);
 434         Config->cmdline.writelog = !do_nolog;
 435         Config->cmdline.writepid = !do_nopid;
 436
 437         if (do_debug)
 438         {
 439                 FileWriter* fw = new FileWriter(stdout, 1);
 440                 FileLogStream* fls = new FileLogStream(LOG_RAWIO, fw);
 441                 Logs->AddLogTypes("*", fls, true);
 442         }
 443
 444         if (!FileSystem::FileExists(ConfigFileName))
 445         {
 446 #ifdef _WIN32
 447                 /* Windows can (and defaults to) hide file extensions, so let's play a bit nice for windows users. */
 448                 std::string txtconf = this->ConfigFileName;
 449                 txtconf.append(".txt");
 450
 451                 if (FileSystem::FileExists(txtconf))
 452                 {
 453                         ConfigFileName = txtconf;
 454                 }
 455                 else
 456 #endif
 457                 {
 458                         std::cout << "ERROR: Cannot open config file: " << ConfigFileName << std::endl << "Exiting..." << std::endl;
 459                         this->Logs->Log("STARTUP", LOG_DEFAULT, "Unable to open config file %s", ConfigFileName.c_str());
 460                         Exit(EXIT_STATUS_CONFIG);
 461                 }
 462         }
 463
 464         std::cout << con_green << "InspIRCd - Internet Relay Chat Daemon" << con_reset << std::endl;
 465         std::cout << "For contributors & authors: " << con_green << "See /INFO Output" << con_reset << std::endl;
 466
 467 #ifndef _WIN32
 468         if (!do_root)
 469                 this->CheckRoot();
 470         else
 471         {
 472                 std::cout << "* WARNING * WARNING * WARNING * WARNING * WARNING *" << std::endl
 473                 << "YOU ARE RUNNING INSPIRCD AS ROOT. THIS IS UNSUPPORTED" << std::endl
 474                 << "AND IF YOU ARE HACKED, CRACKED, SPINDLED OR MUTILATED" << std::endl
 475                 << "OR ANYTHING ELSE UNEXPECTED HAPPENS TO YOU OR YOUR" << std::endl
 476                 << "SERVER, THEN IT IS YOUR OWN FAULT. IF YOU DID NOT MEAN" << std::endl
 477                 << "TO START INSPIRCD AS ROOT, HIT CTRL+C NOW AND RESTART" << std::endl
 478                 << "THE PROGRAM AS A NORMAL USER. YOU HAVE BEEN WARNED!" << std::endl << std::endl
 479                 << "InspIRCd starting in 20 seconds, ctrl+c to abort..." << std::endl;
 480                 sleep(20);
 481         }
 482 #endif
 483
 484         SetSignals();
 485
 486         if (!Config->cmdline.nofork && !ForkIntoBackground())
 487         {
 488                 std::cout << "ERROR: could not go into daemon mode. Shutting down." << std::endl;
 489                 Logs->Log("STARTUP", LOG_DEFAULT, "ERROR: could not go into daemon mode. Shutting down.");
 490                 Exit(EXIT_STATUS_FORK);
 491         }
 492
 493         std::cout << "InspIRCd Process ID: " << con_green << getpid() << con_reset << std::endl;
 494
 495         /* During startup we read the configuration now, not in
 496          * a seperate thread
 497          */
 498         this->Config->Read();
 499         this->Config->Apply(NULL, "");
 500         Logs->OpenFileLogs();
 501
 502         // If we don't have a SID, generate one based on the server name and the server description
 503         if (Config->sid.empty())
 504                 Config->sid = UIDGenerator::GenerateSID(Config->ServerName, Config->ServerDesc);
 505
 506         // Initialize the UID generator with our sid
 507         this->UIDGen.init(Config->sid);
 508
 509         // Create the server user for this server
 510         this->FakeClient = new FakeUser(Config->sid, Config->ServerName, Config->ServerDesc);
 511
 512         // This is needed as all new XLines are marked pending until ApplyLines() is called
 513         this->XLines->ApplyLines();
 514
 515         FailedPortList pl;
 516         int bounditems = BindPorts(pl);
 517
 518         std::cout << std::endl;
 519
 520         this->Modules->LoadAll();
 521
 522         // Build ISupport as ModuleManager::LoadAll() does not do it
 523         this->ISupport.Build();
 524
 525         if (!pl.empty())
 526         {
 527                 std::cout << std::endl << "WARNING: Not all your client ports could be bound -- " << std::endl << "starting anyway with " << bounditems
 528                         << " of " << bounditems + (int)pl.size() << " client ports bound." << std::endl << std::endl;
 529                 std::cout << "The following port(s) failed to bind:" << std::endl << std::endl;
 530                 int j = 1;
 531                 for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 532                 {
 533                         std::cout << j << ".\tAddress: " << i->first.str() << " \tReason: " << strerror(i->second) << std::endl;
 534                 }
 535
 536                 std::cout << std::endl << "Hint: Try using a public IP instead of blank or *" << std::endl;
 537         }
 538
 539         std::cout << "InspIRCd is now running as '" << Config->ServerName << "'[" << Config->GetSID() << "] with " << SocketEngine::GetMaxFds() << " max open sockets" << std::endl;
 540
 541 #ifndef _WIN32
 542         if (!Config->cmdline.nofork)
 543         {
 544                 if (kill(getppid(), SIGTERM) == -1)
 545                 {
 546                         std::cout << "Error killing parent process: " << strerror(errno) << std::endl;
 547                         Logs->Log("STARTUP", LOG_DEFAULT, "Error killing parent process: %s",strerror(errno));
 548                 }
 549         }
 550
 551         /* Explicitly shut down stdio's stdin/stdout/stderr.
 552          *
 553          * The previous logic here was to only do this if stdio was connected to a controlling
 554          * terminal.  However, we must do this always to avoid information leaks and other
 555          * problems related to stdio.
 556          *
 557          * The only exception is if we are in debug mode.
 558          *
 559          *    -- nenolod
 560          */
 561         if ((!do_nofork) && (!Config->cmdline.forcedebug))
 562         {
 563                 int fd = open("/dev/null", O_RDWR);
 564
 565                 fclose(stdin);
 566                 fclose(stderr);
 567                 fclose(stdout);
 568
 569                 if (dup2(fd, STDIN_FILENO) < 0)
 570                         Logs->Log("STARTUP", LOG_DEFAULT, "Failed to dup /dev/null to stdin.");
 571                 if (dup2(fd, STDOUT_FILENO) < 0)
 572                         Logs->Log("STARTUP", LOG_DEFAULT, "Failed to dup /dev/null to stdout.");
 573                 if (dup2(fd, STDERR_FILENO) < 0)
 574                         Logs->Log("STARTUP", LOG_DEFAULT, "Failed to dup /dev/null to stderr.");
 575                 close(fd);
 576         }
 577         else
 578         {
 579                 Logs->Log("STARTUP", LOG_DEFAULT, "Keeping pseudo-tty open as we are running in the foreground.");
 580         }
 581 #else
 582         /* Set win32 service as running, if we are running as a service */
 583         SetServiceRunning();
 584
 585         // Handle forking
 586         if(!do_nofork)
 587         {
 588                 FreeConsole();
 589         }
 590
 591         QueryPerformanceFrequency(&stats.QPFrequency);
 592 #endif
 593
 594         WritePID(Config->PID);
 595         DropRoot();
 596
 597         Logs->Log("STARTUP", LOG_DEFAULT, "Startup complete as '%s'[%s], %lu max open sockets", Config->ServerName.c_str(),Config->GetSID().c_str(), SocketEngine::GetMaxFds());
 598 }
 599
 600 void InspIRCd::UpdateTime()
 601 {
 602 #if defined HAS_CLOCK_GETTIME
 603         clock_gettime(CLOCK_REALTIME, &TIME);
 604 #elif defined _WIN32
 605         SYSTEMTIME st;
 606         GetSystemTime(&st);
 607
 608         TIME.tv_sec = time(NULL);
 609         TIME.tv_nsec = st.wMilliseconds;
 610 #else
 611         struct timeval tv;
 612         gettimeofday(&tv, NULL);
 613
 614         TIME.tv_sec = tv.tv_sec;
 615         TIME.tv_nsec = tv.tv_usec * 1000;
 616 #endif
 617 }
 618
 619 void InspIRCd::Run()
 620 {
 621         UpdateTime();
 622         time_t OLDTIME = TIME.tv_sec;
 623
 624         while (true)
 625         {
 626                 /* Check if there is a config thread which has finished executing but has not yet been freed */
 627                 if (this->ConfigThread && this->ConfigThread->IsDone())
 628                 {
 629                         /* Rehash has completed */
 630                         this->Logs->Log("CONFIG", LOG_DEBUG, "Detected ConfigThread exiting, tidying up...");
 631
 632                         this->ConfigThread->Finish();
 633
 634                         ConfigThread->join();
 635                         delete ConfigThread;
 636                         ConfigThread = NULL;
 637                 }
 638
 639                 UpdateTime();
 640
 641                 /* Run background module timers every few seconds
 642                  * (the docs say modules shouldnt rely on accurate
 643                  * timing using this event, so we dont have to
 644                  * time this exactly).
 645                  */
 646                 if (TIME.tv_sec != OLDTIME)
 647                 {
 648                         CollectStats();
 649
 650                         if (Config->TimeSkipWarn)
 651                         {
 652                                 time_t timediff = TIME.tv_sec - OLDTIME;
 653
 654                                 if (timediff > Config->TimeSkipWarn)
 655                                         SNO->WriteToSnoMask('a', "\002Performance warning!\002 Server clock jumped forwards by %lu seconds!", timediff);
 656
 657                                 else if (timediff < -Config->TimeSkipWarn)
 658                                         SNO->WriteToSnoMask('a', "\002Performance warning!\002 Server clock jumped backwards by %lu seconds!", labs(timediff));
 659                         }
 660
 661                         OLDTIME = TIME.tv_sec;
 662
 663                         if ((TIME.tv_sec % 3600) == 0)
 664                                 FOREACH_MOD(OnGarbageCollect, ());
 665
 666                         Timers.TickTimers(TIME.tv_sec);
 667                         Users->DoBackgroundUserStuff();
 668
 669                         if ((TIME.tv_sec % 5) == 0)
 670                         {
 671                                 FOREACH_MOD(OnBackgroundTimer, (TIME.tv_sec));
 672                                 SNO->FlushSnotices();
 673                         }
 674                 }
 675
 676                 /* Call the socket engine to wait on the active
 677                  * file descriptors. The socket engine has everything's
 678                  * descriptors in its list... dns, modules, users,
 679                  * servers... so its nice and easy, just one call.
 680                  * This will cause any read or write events to be
 681                  * dispatched to their handlers.
 682                  */
 683                 SocketEngine::DispatchTrialWrites();
 684                 SocketEngine::DispatchEvents();
 685
 686                 /* if any users were quit, take them out */
 687                 GlobalCulls.Apply();
 688                 AtomicActions.Run();
 689
 690                 if (s_signal)
 691                 {
 692                         this->SignalHandler(s_signal);
 693                         s_signal = 0;
 694                 }
 695         }
 696 }
 697
 698 sig_atomic_t InspIRCd::s_signal = 0;
 699
 700 void InspIRCd::SetSignal(int signal)
 701 {
 702         s_signal = signal;
 703 }
 704
 705 /* On posix systems, the flow of the program starts right here, with
 706  * ENTRYPOINT being a #define that defines main(). On Windows, ENTRYPOINT
 707  * defines smain() and the real main() is in the service code under
 708  * win32service.cpp. This allows the service control manager to control
 709  * the process where we are running as a windows service.
 710  */
 711 ENTRYPOINT
 712 {
 713         new InspIRCd(argc, argv);
 714         ServerInstance->Run();
 715         delete ServerInstance;
 716         return 0;
 717 }