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         // Warns a user running as root that they probably shouldn't.
  84         void CheckRoot()
  85         {
  86 #ifndef _WIN32
  87                 if (getegid() != 0 && geteuid() != 0)
  88                         return;
  89
  90                 std::cout << con_red << "Warning!" << con_reset << " You have started as root. Running as root is generally not required" << std::endl
  91                         << "and may allow an attacker to gain access to your system if they find a way to" << std::endl
  92                         << "exploit your IRC server." << std::endl
  93                         << std::endl;
  94                 if (isatty(fileno(stdout)))
  95                 {
  96                         std::cout << "InspIRCd will start in 30 seconds. If you are sure that you need to run as root" << std::endl
  97                                 << "then you can pass the " << con_bright << "--runasroot" << con_reset << " option to disable this wait." << std::endl;
  98                         sleep(30);
  99                 }
 100                 else
 101                 {
 102                         std::cout << "If you are sure that you need to run as root then you can pass the " << con_bright << "--runasroot" << con_reset << std::endl
 103                                 << "option to disable this error." << std::endl;
 104                                 ServerInstance->Exit(EXIT_STATUS_ROOT);
 105                 }
 106 #endif
 107         }
 108
 109         // Collects performance statistics for the STATS command.
 110         void CollectStats()
 111         {
 112 #ifndef _WIN32
 113                 static rusage ru;
 114                 if (getrusage(RUSAGE_SELF, &ru) == -1)
 115                         return; // Should never happen.
 116
 117                 ServerInstance->stats.LastSampled.tv_sec = ServerInstance->Time();
 118                 ServerInstance->stats.LastSampled.tv_nsec = ServerInstance->Time_ns();
 119                 ServerInstance->stats.LastCPU = ru.ru_utime;
 120 #else
 121                 if (!QueryPerformanceCounter(&ServerInstance->stats.LastSampled))
 122                         return; // Should never happen.
 123
 124                 FILETIME CreationTime;
 125                 FILETIME ExitTime;
 126                 FILETIME KernelTime;
 127                 FILETIME UserTime;
 128                 GetProcessTimes(GetCurrentProcess(), &CreationTime, &ExitTime, &KernelTime, &UserTime);
 129
 130                 ServerInstance->stats.LastCPU.dwHighDateTime = KernelTime.dwHighDateTime + UserTime.dwHighDateTime;
 131                 ServerInstance->stats.LastCPU.dwLowDateTime = KernelTime.dwLowDateTime + UserTime.dwLowDateTime;
 132 #endif
 133         }
 134
 135         // Deletes a pointer and then zeroes it.
 136         template<typename T>
 137         void DeleteZero(T*& pr)
 138         {
 139                 T* p = pr;
 140                 pr = NULL;
 141                 delete p;
 142         }
 143
 144         // Drops to the unprivileged user/group specified in <security:runas{user,group}>.
 145         void DropRoot()
 146         {
 147 #ifndef _WIN32
 148                 ConfigTag* security = ServerInstance->Config->ConfValue("security");
 149
 150                 const std::string SetGroup = security->getString("runasgroup");
 151                 if (!SetGroup.empty())
 152                 {
 153                         errno = 0;
 154                         if (setgroups(0, NULL) == -1)
 155                         {
 156                                 ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "setgroups() failed (wtf?): %s", strerror(errno));
 157                                 exit(EXIT_STATUS_CONFIG);
 158                         }
 159
 160                         struct group* g = getgrnam(SetGroup.c_str());
 161                         if (!g)
 162                         {
 163                                 ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "getgrnam(%s) failed (wrong group?): %s", SetGroup.c_str(), strerror(errno));
 164                                 exit(EXIT_STATUS_CONFIG);
 165                         }
 166
 167                         if (setgid(g->gr_gid) == -1)
 168                         {
 169                                 ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "setgid(%d) failed (wrong group?): %s", g->gr_gid, strerror(errno));
 170                                 exit(EXIT_STATUS_CONFIG);
 171                         }
 172                 }
 173
 174                 const std::string SetUser = security->getString("runasuser");
 175                 if (!SetUser.empty())
 176                 {
 177                         errno = 0;
 178                         struct passwd* u = getpwnam(SetUser.c_str());
 179                         if (!u)
 180                         {
 181                                 ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "getpwnam(%s) failed (wrong user?): %s", SetUser.c_str(), strerror(errno));
 182                                 exit(EXIT_STATUS_CONFIG);
 183                         }
 184
 185                         if (setuid(u->pw_uid) == -1)
 186                         {
 187                                 ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "setuid(%d) failed (wrong user?): %s", u->pw_uid, strerror(errno));
 188                                 exit(EXIT_STATUS_CONFIG);
 189                         }
 190                 }
 191 #endif
 192         }
 193
 194         // Locates a config file on the file system.
 195         bool FindConfigFile(std::string& path)
 196         {
 197                 if (FileSystem::FileExists(path))
 198                         return true;
 199
 200 #ifdef _WIN32
 201                 // Windows hides file extensions by default so try appending .txt to the path
 202                 // to help users who have that feature enabled and can't create .conf files.
 203                 const std::string txtpath = path + ".txt";
 204                 if (FileSystem::FileExists(txtpath))
 205                 {
 206                         path.assign(txtpath);
 207                         return true;
 208                 }
 209 #endif
 210                 return false;
 211         }
 212
 213         // Attempts to fork into the background.
 214         bool ForkIntoBackground()
 215         {
 216 #ifndef _WIN32
 217                 // We use VoidSignalHandler whilst forking to avoid breaking daemon scripts
 218                 // if the parent process exits with SIGTERM (15) instead of EXIT_STATUS_NOERROR (0).
 219                 signal(SIGTERM, VoidSignalHandler);
 220
 221                 errno = 0;
 222                 int childpid = fork();
 223                 if (childpid < 0)
 224                 {
 225                         ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "fork() failed: %s", strerror(errno));
 226                         return false;
 227                 }
 228                 else if (childpid > 0)
 229                 {
 230                         // Wait until the child process kills the parent so that the shell prompt
 231                         // doesnt display over the output. Sending a kill with a signal of 0 just
 232                         // checks that the child pid is still running. If it is not then an error
 233                         // happened and the parent should exit.
 234                         while (kill(childpid, 0) != -1)
 235                                 sleep(1);
 236                         exit(EXIT_STATUS_NOERROR);
 237                 }
 238                 else
 239                 {
 240                         setsid();
 241                         signal(SIGTERM, InspIRCd::SetSignal);
 242                         SocketEngine::RecoverFromFork();
 243                 }
 244 #endif
 245                 return true;
 246         }
 247
 248         // Increase the size of a core dump file to improve debugging problems.
 249         void IncreaseCoreDumpSize()
 250         {
 251 #ifndef _WIN32
 252                 errno = 0;
 253                 rlimit rl;
 254                 if (getrlimit(RLIMIT_CORE, &rl) == -1)
 255                 {
 256                         ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "Unable to increase core dump size: getrlimit(RLIMIT_CORE) failed: %s", strerror(errno));
 257                         return;
 258                 }
 259
 260                 rl.rlim_cur = rl.rlim_max;
 261                 if (setrlimit(RLIMIT_CORE, &rl) == -1)
 262                         ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "Unable to increase core dump size: setrlimit(RLIMIT_CORE) failed: %s", strerror(errno));
 263 #endif
 264         }
 265
 266         // Seeds the random number generator if applicable.
 267         void SeedRng(timespec ts)
 268         {
 269 #if defined _WIN32
 270                 srand(ts.tv_nsec ^ ts.tv_sec);
 271 #elif !defined HAS_ARC4RANDOM_BUF
 272                 srandom(ts.tv_nsec ^ ts.tv_sec);
 273 #endif
 274         }
 275
 276         // Sets handlers for various process signals.
 277         void SetSignals()
 278         {
 279 #ifndef _WIN32
 280                 signal(SIGALRM, SIG_IGN);
 281                 signal(SIGCHLD, SIG_IGN);
 282                 signal(SIGHUP, InspIRCd::SetSignal);
 283                 signal(SIGPIPE, SIG_IGN);
 284                 signal(SIGUSR1, SIG_IGN);
 285                 signal(SIGUSR2, SIG_IGN);
 286                 signal(SIGXFSZ, SIG_IGN);
 287 #endif
 288                 signal(SIGTERM, InspIRCd::SetSignal);
 289         }
 290
 291         // Required for returning the proper value of EXIT_SUCCESS for the parent process.
 292         void VoidSignalHandler(int)
 293         {
 294                 exit(EXIT_STATUS_NOERROR);
 295         }
 296 }
 297
 298 void InspIRCd::Cleanup()
 299 {
 300         // Close all listening sockets
 301         for (unsigned int i = 0; i < ports.size(); i++)
 302         {
 303                 ports[i]->cull();
 304                 delete ports[i];
 305         }
 306         ports.clear();
 307
 308         // Tell modules that we're shutting down.
 309         const std::string quitmsg = "Server shutting down";
 310         FOREACH_MOD(OnShutdown, (quitmsg));
 311
 312         // Disconnect all local users
 313         const UserManager::LocalList& list = Users.GetLocalUsers();
 314         while (!list.empty())
 315                 ServerInstance->Users.QuitUser(list.front(), quitmsg);
 316
 317         GlobalCulls.Apply();
 318         Modules->UnloadAll();
 319
 320         /* Delete objects dynamically allocated in constructor (destructor would be more appropriate, but we're likely exiting) */
 321         /* Must be deleted before modes as it decrements modelines */
 322         if (FakeClient)
 323         {
 324                 delete FakeClient->server;
 325                 FakeClient->cull();
 326         }
 327         DeleteZero(this->FakeClient);
 328         DeleteZero(this->XLines);
 329         DeleteZero(this->Config);
 330         SocketEngine::Deinit();
 331         Logs->CloseLogs();
 332 }
 333
 334 void InspIRCd::WritePID(const std::string& filename, bool exitonfail)
 335 {
 336 #ifndef _WIN32
 337         if (!ServerInstance->Config->cmdline.writepid)
 338         {
 339                 this->Logs->Log("STARTUP", LOG_DEFAULT, "--nopid specified on command line; PID file not written.");
 340                 return;
 341         }
 342
 343         std::string fname = ServerInstance->Config->Paths.PrependData(filename.empty() ? "inspircd.pid" : filename);
 344         std::ofstream outfile(fname.c_str());
 345         if (outfile.is_open())
 346         {
 347                 outfile << getpid();
 348                 outfile.close();
 349         }
 350         else
 351         {
 352                 if (exitonfail)
 353                         std::cout << "Failed to write PID-file '" << fname << "', exiting." << std::endl;
 354                 this->Logs->Log("STARTUP", LOG_DEFAULT, "Failed to write PID-file '%s'%s", fname.c_str(), (exitonfail ? ", exiting." : ""));
 355                 if (exitonfail)
 356                         Exit(EXIT_STATUS_PID);
 357         }
 358 #endif
 359 }
 360
 361 InspIRCd::InspIRCd(int argc, char** argv)
 362         : FakeClient(NULL)
 363         , ConfigFileName(INSPIRCD_CONFIG_PATH "/inspircd.conf")
 364         , ConfigThread(NULL)
 365         , Config(NULL)
 366         , XLines(NULL)
 367         , PI(&DefaultProtocolInterface)
 368         , GenRandom(&DefaultGenRandom)
 369         , IsChannel(&DefaultIsChannel)
 370         , IsNick(&DefaultIsNick)
 371         , IsIdent(&DefaultIsIdent)
 372 {
 373         ServerInstance = this;
 374
 375         UpdateTime();
 376         this->startup_time = TIME.tv_sec;
 377
 378         IncreaseCoreDumpSize();
 379         SeedRng(TIME);
 380         SocketEngine::Init();
 381
 382         this->Config = new ServerConfig;
 383         dynamic_reference_base::reset_all();
 384         this->XLines = new XLineManager;
 385
 386         this->Config->cmdline.argv = argv;
 387         this->Config->cmdline.argc = argc;
 388
 389 #ifdef _WIN32
 390         // Initialize the console values
 391         g_hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
 392         CONSOLE_SCREEN_BUFFER_INFO bufinf;
 393         if(GetConsoleScreenBufferInfo(g_hStdout, &bufinf))
 394         {
 395                 g_wOriginalColors = bufinf.wAttributes & 0x00FF;
 396                 g_wBackgroundColor = bufinf.wAttributes & 0x00F0;
 397         }
 398         else
 399         {
 400                 g_wOriginalColors = FOREGROUND_RED|FOREGROUND_BLUE|FOREGROUND_GREEN;
 401                 g_wBackgroundColor = 0;
 402         }
 403 #endif
 404
 405         {
 406                 ServiceProvider* provs[] =
 407                 {
 408                         &rfcevents.numeric, &rfcevents.join, &rfcevents.part, &rfcevents.kick, &rfcevents.quit, &rfcevents.nick,
 409                         &rfcevents.mode, &rfcevents.topic, &rfcevents.privmsg, &rfcevents.invite, &rfcevents.ping, &rfcevents.pong,
 410                         &rfcevents.error
 411                 };
 412                 Modules.AddServices(provs, sizeof(provs)/sizeof(provs[0]));
 413         }
 414
 415         // Flag variables passed to getopt_long() later
 416         int do_version = 0, do_nofork = 0, do_debug = 0,
 417                 do_nolog = 0, do_nopid = 0, do_root = 0;
 418         struct option longopts[] =
 419         {
 420                 { "nofork",     no_argument,            &do_nofork,     1       },
 421                 { "config",     required_argument,      NULL,           'c'     },
 422                 { "debug",      no_argument,            &do_debug,      1       },
 423                 { "nolog",      no_argument,            &do_nolog,      1       },
 424                 { "nopid",      no_argument,            &do_nopid,      1       },
 425                 { "runasroot",  no_argument,            &do_root,       1       },
 426                 { "version",    no_argument,            &do_version,    1       },
 427                 { 0, 0, 0, 0 }
 428         };
 429
 430         int c;
 431         int index;
 432         while ((c = getopt_long(argc, argv, ":c:", longopts, &index)) != -1)
 433         {
 434                 switch (c)
 435                 {
 436                         case 'c':
 437                                 /* Config filename was set */
 438                                 ConfigFileName = optarg;
 439 #ifdef _WIN32
 440                                 TCHAR configPath[MAX_PATH + 1];
 441                                 if (GetFullPathName(optarg, MAX_PATH, configPath, NULL) > 0)
 442                                         ConfigFileName = configPath;
 443 #else
 444                                 char configPath[PATH_MAX + 1];
 445                                 if (realpath(optarg, configPath))
 446                                         ConfigFileName = configPath;
 447 #endif
 448                         break;
 449                         case 0:
 450                                 /* getopt_long_only() set an int variable, just keep going */
 451                         break;
 452                         case '?':
 453                                 /* Unknown parameter */
 454                         default:
 455                                 /* Fall through to handle other weird values too */
 456                                 std::cout << "Unknown parameter '" << argv[optind-1] << "'" << std::endl;
 457                                 std::cout << "Usage: " << argv[0] << " [--nofork] [--nolog] [--nopid] [--debug] [--config <config>]" << std::endl <<
 458                                         std::string(static_cast<size_t>(8+strlen(argv[0])), ' ') << "[--runasroot] [--version]" << std::endl;
 459                                 Exit(EXIT_STATUS_ARGV);
 460                         break;
 461                 }
 462         }
 463
 464         if (do_version)
 465         {
 466                 std::cout << std::endl << INSPIRCD_VERSION << std::endl;
 467                 Exit(EXIT_STATUS_NOERROR);
 468         }
 469
 470         /* Set the finished argument values */
 471         Config->cmdline.nofork = (do_nofork != 0);
 472         Config->cmdline.forcedebug = (do_debug != 0);
 473         Config->cmdline.writelog = !do_nolog;
 474         Config->cmdline.writepid = !do_nopid;
 475
 476         if (do_debug)
 477         {
 478                 FileWriter* fw = new FileWriter(stdout, 1);
 479                 FileLogStream* fls = new FileLogStream(LOG_RAWIO, fw);
 480                 Logs->AddLogTypes("*", fls, true);
 481         }
 482
 483         std::cout << con_green << "InspIRCd - Internet Relay Chat Daemon" << con_reset << std::endl
 484                 << "See " << con_green << "/INFO" << con_reset << " for contributors & authors" << std::endl
 485                 << std::endl;
 486
 487         if (!FindConfigFile(ConfigFileName))
 488         {
 489                 this->Logs->Log("STARTUP", LOG_DEFAULT, "Unable to open config file %s", ConfigFileName.c_str());
 490                 std::cout << "ERROR: Cannot open config file: " << ConfigFileName << std::endl << "Exiting..." << std::endl;
 491                 Exit(EXIT_STATUS_CONFIG);
 492         }
 493
 494         SetSignals();
 495         if (!do_root)
 496                 CheckRoot();
 497
 498         if (!Config->cmdline.nofork && !ForkIntoBackground())
 499         {
 500                 std::cout << "ERROR: could not go into daemon mode. Shutting down." << std::endl;
 501                 Logs->Log("STARTUP", LOG_DEFAULT, "ERROR: could not go into daemon mode. Shutting down.");
 502                 Exit(EXIT_STATUS_FORK);
 503         }
 504
 505         std::cout << "InspIRCd Process ID: " << con_green << getpid() << con_reset << std::endl;
 506
 507         /* During startup we read the configuration now, not in
 508          * a seperate thread
 509          */
 510         this->Config->Read();
 511         this->Config->Apply(NULL, "");
 512         Logs->OpenFileLogs();
 513
 514         // If we don't have a SID, generate one based on the server name and the server description
 515         if (Config->sid.empty())
 516                 Config->sid = UIDGenerator::GenerateSID(Config->ServerName, Config->ServerDesc);
 517
 518         // Initialize the UID generator with our sid
 519         this->UIDGen.init(Config->sid);
 520
 521         // Create the server user for this server
 522         this->FakeClient = new FakeUser(Config->sid, Config->ServerName, Config->ServerDesc);
 523
 524         // This is needed as all new XLines are marked pending until ApplyLines() is called
 525         this->XLines->ApplyLines();
 526
 527         FailedPortList pl;
 528         int bounditems = BindPorts(pl);
 529
 530         std::cout << std::endl;
 531
 532         this->Modules->LoadAll();
 533
 534         // Build ISupport as ModuleManager::LoadAll() does not do it
 535         this->ISupport.Build();
 536
 537         if (!pl.empty())
 538         {
 539                 std::cout << std::endl << "WARNING: Not all your client ports could be bound -- " << std::endl << "starting anyway with " << bounditems
 540                         << " of " << bounditems + (int)pl.size() << " client ports bound." << std::endl << std::endl;
 541                 std::cout << "The following port(s) failed to bind:" << std::endl << std::endl;
 542                 int j = 1;
 543                 for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 544                 {
 545                         std::cout << j << ".\tAddress: " << i->first.str() << " \tReason: " << strerror(i->second) << std::endl;
 546                 }
 547
 548                 std::cout << std::endl << "Hint: Try using a public IP instead of blank or *" << std::endl;
 549         }
 550
 551         std::cout << "InspIRCd is now running as '" << Config->ServerName << "'[" << Config->GetSID() << "] with " << SocketEngine::GetMaxFds() << " max open sockets" << std::endl;
 552
 553 #ifndef _WIN32
 554         if (!Config->cmdline.nofork)
 555         {
 556                 if (kill(getppid(), SIGTERM) == -1)
 557                 {
 558                         std::cout << "Error killing parent process: " << strerror(errno) << std::endl;
 559                         Logs->Log("STARTUP", LOG_DEFAULT, "Error killing parent process: %s",strerror(errno));
 560                 }
 561         }
 562
 563         /* Explicitly shut down stdio's stdin/stdout/stderr.
 564          *
 565          * The previous logic here was to only do this if stdio was connected to a controlling
 566          * terminal.  However, we must do this always to avoid information leaks and other
 567          * problems related to stdio.
 568          *
 569          * The only exception is if we are in debug mode.
 570          *
 571          *    -- nenolod
 572          */
 573         if ((!do_nofork) && (!Config->cmdline.forcedebug))
 574         {
 575                 int fd = open("/dev/null", O_RDWR);
 576
 577                 fclose(stdin);
 578                 fclose(stderr);
 579                 fclose(stdout);
 580
 581                 if (dup2(fd, STDIN_FILENO) < 0)
 582                         Logs->Log("STARTUP", LOG_DEFAULT, "Failed to dup /dev/null to stdin.");
 583                 if (dup2(fd, STDOUT_FILENO) < 0)
 584                         Logs->Log("STARTUP", LOG_DEFAULT, "Failed to dup /dev/null to stdout.");
 585                 if (dup2(fd, STDERR_FILENO) < 0)
 586                         Logs->Log("STARTUP", LOG_DEFAULT, "Failed to dup /dev/null to stderr.");
 587                 close(fd);
 588         }
 589         else
 590         {
 591                 Logs->Log("STARTUP", LOG_DEFAULT, "Keeping pseudo-tty open as we are running in the foreground.");
 592         }
 593 #else
 594         /* Set win32 service as running, if we are running as a service */
 595         SetServiceRunning();
 596
 597         // Handle forking
 598         if(!do_nofork)
 599         {
 600                 FreeConsole();
 601         }
 602
 603         QueryPerformanceFrequency(&stats.QPFrequency);
 604 #endif
 605
 606         WritePID(Config->PID);
 607         DropRoot();
 608
 609         Logs->Log("STARTUP", LOG_DEFAULT, "Startup complete as '%s'[%s], %lu max open sockets", Config->ServerName.c_str(),Config->GetSID().c_str(), SocketEngine::GetMaxFds());
 610 }
 611
 612 void InspIRCd::UpdateTime()
 613 {
 614 #if defined HAS_CLOCK_GETTIME
 615         clock_gettime(CLOCK_REALTIME, &TIME);
 616 #elif defined _WIN32
 617         SYSTEMTIME st;
 618         GetSystemTime(&st);
 619
 620         TIME.tv_sec = time(NULL);
 621         TIME.tv_nsec = st.wMilliseconds;
 622 #else
 623         struct timeval tv;
 624         gettimeofday(&tv, NULL);
 625
 626         TIME.tv_sec = tv.tv_sec;
 627         TIME.tv_nsec = tv.tv_usec * 1000;
 628 #endif
 629 }
 630
 631 void InspIRCd::Run()
 632 {
 633         UpdateTime();
 634         time_t OLDTIME = TIME.tv_sec;
 635
 636         while (true)
 637         {
 638                 /* Check if there is a config thread which has finished executing but has not yet been freed */
 639                 if (this->ConfigThread && this->ConfigThread->IsDone())
 640                 {
 641                         /* Rehash has completed */
 642                         this->Logs->Log("CONFIG", LOG_DEBUG, "Detected ConfigThread exiting, tidying up...");
 643
 644                         this->ConfigThread->Finish();
 645
 646                         ConfigThread->join();
 647                         delete ConfigThread;
 648                         ConfigThread = NULL;
 649                 }
 650
 651                 UpdateTime();
 652
 653                 /* Run background module timers every few seconds
 654                  * (the docs say modules shouldnt rely on accurate
 655                  * timing using this event, so we dont have to
 656                  * time this exactly).
 657                  */
 658                 if (TIME.tv_sec != OLDTIME)
 659                 {
 660                         CollectStats();
 661
 662                         if (Config->TimeSkipWarn)
 663                         {
 664                                 time_t timediff = TIME.tv_sec - OLDTIME;
 665
 666                                 if (timediff > Config->TimeSkipWarn)
 667                                         SNO->WriteToSnoMask('a', "\002Performance warning!\002 Server clock jumped forwards by %lu seconds!", timediff);
 668
 669                                 else if (timediff < -Config->TimeSkipWarn)
 670                                         SNO->WriteToSnoMask('a', "\002Performance warning!\002 Server clock jumped backwards by %lu seconds!", labs(timediff));
 671                         }
 672
 673                         OLDTIME = TIME.tv_sec;
 674
 675                         if ((TIME.tv_sec % 3600) == 0)
 676                                 FOREACH_MOD(OnGarbageCollect, ());
 677
 678                         Timers.TickTimers(TIME.tv_sec);
 679                         Users->DoBackgroundUserStuff();
 680
 681                         if ((TIME.tv_sec % 5) == 0)
 682                         {
 683                                 FOREACH_MOD(OnBackgroundTimer, (TIME.tv_sec));
 684                                 SNO->FlushSnotices();
 685                         }
 686                 }
 687
 688                 /* Call the socket engine to wait on the active
 689                  * file descriptors. The socket engine has everything's
 690                  * descriptors in its list... dns, modules, users,
 691                  * servers... so its nice and easy, just one call.
 692                  * This will cause any read or write events to be
 693                  * dispatched to their handlers.
 694                  */
 695                 SocketEngine::DispatchTrialWrites();
 696                 SocketEngine::DispatchEvents();
 697
 698                 /* if any users were quit, take them out */
 699                 GlobalCulls.Apply();
 700                 AtomicActions.Run();
 701
 702                 if (s_signal)
 703                 {
 704                         this->SignalHandler(s_signal);
 705                         s_signal = 0;
 706                 }
 707         }
 708 }
 709
 710 sig_atomic_t InspIRCd::s_signal = 0;
 711
 712 void InspIRCd::SetSignal(int signal)
 713 {
 714         s_signal = signal;
 715 }
 716
 717 /* On posix systems, the flow of the program starts right here, with
 718  * ENTRYPOINT being a #define that defines main(). On Windows, ENTRYPOINT
 719  * defines smain() and the real main() is in the service code under
 720  * win32service.cpp. This allows the service control manager to control
 721  * the process where we are running as a windows service.
 722  */
 723 ENTRYPOINT
 724 {
 725         new InspIRCd(argc, argv);
 726         ServerInstance->Run();
 727         delete ServerInstance;
 728         return 0;
 729 }