src/inspircd.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2020 Matt Schatz <genius3000@g3k.solutions>
   5  *   Copyright (C) 2018 Chris Novakovic <chrisnovakovic@users.noreply.github.com>
   6  *   Copyright (C) 2013, 2017-2021 Sadie Powell <sadie@witchery.services>
   7  *   Copyright (C) 2013 Adam <Adam@anope.org>
   8  *   Copyright (C) 2012-2014, 2016, 2018 Attila Molnar <attilamolnar@hush.com>
   9  *   Copyright (C) 2012-2013 ChrisTX <xpipe@hotmail.de>
  10  *   Copyright (C) 2012 Robby <robby@chatbelgie.be>
  11  *   Copyright (C) 2012 Ariadne Conill <ariadne@dereferenced.org>
  12  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
  13  *   Copyright (C) 2008-2009 Uli Schlachter <psychon@inspircd.org>
  14  *   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
  15  *   Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
  16  *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
  17  *   Copyright (C) 2006-2007 Oliver Lupton <om@inspircd.org>
  18  *   Copyright (C) 2005-2010 Craig Edwards <brain@inspircd.org>
  19  *
  20  * This file is part of InspIRCd.  InspIRCd is free software: you can
  21  * redistribute it and/or modify it under the terms of the GNU General Public
  22  * License as published by the Free Software Foundation, version 2.
  23  *
  24  * This program is distributed in the hope that it will be useful, but WITHOUT
  25  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  26  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  27  * details.
  28  *
  29  * You should have received a copy of the GNU General Public License
  30  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  31  */
  32
  33
  34 #include "inspircd.h"
  35 #include <signal.h>
  36
  37 #ifndef _WIN32
  38         #include <unistd.h>
  39         #include <sys/resource.h>
  40         #include <getopt.h>
  41         #include <pwd.h> // setuid
  42         #include <grp.h> // setgid
  43 #else
  44         /** Manages formatting lines written to stderr on Windows. */
  45         WindowsStream StandardError(STD_ERROR_HANDLE);
  46
  47         /** Manages formatting lines written to stdout on Windows. */
  48         WindowsStream StandardOutput(STD_OUTPUT_HANDLE);
  49 #endif
  50
  51 #include <fstream>
  52 #include <iostream>
  53 #include "xline.h"
  54 #include "exitcodes.h"
  55
  56 InspIRCd* ServerInstance = NULL;
  57
  58 /** Separate from the other casemap tables so that code *can* still exclusively rely on RFC casemapping
  59  * if it must.
  60  *
  61  * This is provided as a pointer so that modules can change it to their custom mapping tables,
  62  * e.g. for national character support.
  63  */
  64 unsigned const char *national_case_insensitive_map = rfc_case_insensitive_map;
  65
  66
  67 /* Moved from exitcodes.h -- due to duplicate symbols -- Burlex
  68  * XXX this is a bit ugly. -- w00t
  69  */
  70 const char* ExitCodes[] =
  71 {
  72                 "No error",                                                             // 0
  73                 "DIE command",                                                  // 1
  74                 "Config file error",                                    // 2
  75                 "Logfile error",                                                // 3
  76                 "POSIX fork failed",                                    // 4
  77                 "Bad commandline parameters",                   // 5
  78                 "Can't write PID file",                                 // 6
  79                 "SocketEngine could not initialize",    // 7
  80                 "Refusing to start up as root",                 // 8
  81                 "Couldn't load module on startup",              // 9
  82                 "Received SIGTERM"                                              // 10
  83 };
  84
  85 namespace
  86 {
  87         void VoidSignalHandler(int);
  88
  89         // Warns a user running as root that they probably shouldn't.
  90         void CheckRoot()
  91         {
  92 #ifndef _WIN32
  93                 if (getegid() != 0 && geteuid() != 0)
  94                         return;
  95
  96                 std::cout << con_red << "Warning!" << con_reset << " You have started as root. Running as root is generally not required" << std::endl
  97                         << "and may allow an attacker to gain access to your system if they find a way to" << std::endl
  98                         << "exploit your IRC server." << std::endl
  99                         << std::endl;
 100                 if (isatty(fileno(stdout)))
 101                 {
 102                         std::cout << "InspIRCd will start in 30 seconds. If you are sure that you need to run as root" << std::endl
 103                                 << "then you can pass the " << con_bright << "--runasroot" << con_reset << " option to disable this wait." << std::endl;
 104                         sleep(30);
 105                 }
 106                 else
 107                 {
 108                         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
 109                                 << "option to disable this error." << std::endl;
 110                                 ServerInstance->Exit(EXIT_STATUS_ROOT);
 111                 }
 112 #endif
 113         }
 114
 115         // Collects performance statistics for the STATS command.
 116         void CollectStats()
 117         {
 118 #ifndef _WIN32
 119                 static rusage ru;
 120                 if (getrusage(RUSAGE_SELF, &ru) == -1)
 121                         return; // Should never happen.
 122
 123                 ServerInstance->stats.LastSampled.tv_sec = ServerInstance->Time();
 124                 ServerInstance->stats.LastSampled.tv_nsec = ServerInstance->Time_ns();
 125                 ServerInstance->stats.LastCPU = ru.ru_utime;
 126 #else
 127                 if (!QueryPerformanceCounter(&ServerInstance->stats.LastSampled))
 128                         return; // Should never happen.
 129
 130                 FILETIME CreationTime;
 131                 FILETIME ExitTime;
 132                 FILETIME KernelTime;
 133                 FILETIME UserTime;
 134                 GetProcessTimes(GetCurrentProcess(), &CreationTime, &ExitTime, &KernelTime, &UserTime);
 135
 136                 ServerInstance->stats.LastCPU.dwHighDateTime = KernelTime.dwHighDateTime + UserTime.dwHighDateTime;
 137                 ServerInstance->stats.LastCPU.dwLowDateTime = KernelTime.dwLowDateTime + UserTime.dwLowDateTime;
 138 #endif
 139         }
 140
 141         // Checks whether the server clock has skipped too much and warn about it if it has.
 142         void CheckTimeSkip(time_t oldtime, time_t newtime)
 143         {
 144                 if (!ServerInstance->Config->TimeSkipWarn)
 145                         return;
 146
 147                 time_t timediff = newtime - oldtime;
 148
 149                 if (timediff > ServerInstance->Config->TimeSkipWarn)
 150                         ServerInstance->SNO->WriteToSnoMask('a', "\002Performance warning!\002 Server clock jumped forwards by %lu seconds!", timediff);
 151
 152                 else if (timediff < -ServerInstance->Config->TimeSkipWarn)
 153                         ServerInstance->SNO->WriteToSnoMask('a', "\002Performance warning!\002 Server clock jumped backwards by %lu seconds!", labs(timediff));
 154         }
 155
 156         // Drops to the unprivileged user/group specified in <security:runas{user,group}>.
 157         void DropRoot()
 158         {
 159 #ifndef _WIN32
 160                 ConfigTag* security = ServerInstance->Config->ConfValue("security");
 161
 162                 const std::string SetGroup = security->getString("runasgroup");
 163                 if (!SetGroup.empty())
 164                 {
 165                         errno = 0;
 166                         if (setgroups(0, NULL) == -1)
 167                         {
 168                                 ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "setgroups() failed (wtf?): %s", strerror(errno));
 169                                 exit(EXIT_STATUS_CONFIG);
 170                         }
 171
 172                         struct group* g = getgrnam(SetGroup.c_str());
 173                         if (!g)
 174                         {
 175                                 ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "getgrnam(%s) failed (wrong group?): %s", SetGroup.c_str(), strerror(errno));
 176                                 exit(EXIT_STATUS_CONFIG);
 177                         }
 178
 179                         if (setgid(g->gr_gid) == -1)
 180                         {
 181                                 ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "setgid(%d) failed (wrong group?): %s", g->gr_gid, strerror(errno));
 182                                 exit(EXIT_STATUS_CONFIG);
 183                         }
 184                 }
 185
 186                 const std::string SetUser = security->getString("runasuser");
 187                 if (!SetUser.empty())
 188                 {
 189                         errno = 0;
 190                         struct passwd* u = getpwnam(SetUser.c_str());
 191                         if (!u)
 192                         {
 193                                 ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "getpwnam(%s) failed (wrong user?): %s", SetUser.c_str(), strerror(errno));
 194                                 exit(EXIT_STATUS_CONFIG);
 195                         }
 196
 197                         if (setuid(u->pw_uid) == -1)
 198                         {
 199                                 ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "setuid(%d) failed (wrong user?): %s", u->pw_uid, strerror(errno));
 200                                 exit(EXIT_STATUS_CONFIG);
 201                         }
 202                 }
 203 #endif
 204         }
 205
 206         // Expands a path relative to the current working directory.
 207         std::string ExpandPath(const char* path)
 208         {
 209 #ifdef _WIN32
 210                 TCHAR configPath[MAX_PATH + 1];
 211                 if (GetFullPathName(path, MAX_PATH, configPath, NULL) > 0)
 212                         return configPath;
 213 #else
 214                 char configPath[PATH_MAX + 1];
 215                 if (realpath(path, configPath))
 216                         return configPath;
 217 #endif
 218                 return path;
 219         }
 220
 221         // Locates a config file on the file system.
 222         bool FindConfigFile(std::string& path)
 223         {
 224                 if (FileSystem::FileExists(path))
 225                         return true;
 226
 227 #ifdef _WIN32
 228                 // Windows hides file extensions by default so try appending .txt to the path
 229                 // to help users who have that feature enabled and can't create .conf files.
 230                 const std::string txtpath = path + ".txt";
 231                 if (FileSystem::FileExists(txtpath))
 232                 {
 233                         path.assign(txtpath);
 234                         return true;
 235                 }
 236 #endif
 237                 return false;
 238         }
 239
 240         // Attempts to fork into the background.
 241         void ForkIntoBackground()
 242         {
 243 #ifndef _WIN32
 244                 // We use VoidSignalHandler whilst forking to avoid breaking daemon scripts
 245                 // if the parent process exits with SIGTERM (15) instead of EXIT_STATUS_NOERROR (0).
 246                 signal(SIGTERM, VoidSignalHandler);
 247
 248                 errno = 0;
 249                 int childpid = fork();
 250                 if (childpid < 0)
 251                 {
 252                         ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "fork() failed: %s", strerror(errno));
 253                         std::cout << con_red << "Error:" << con_reset << " unable to fork into background: " << strerror(errno);
 254                         ServerInstance->Exit(EXIT_STATUS_FORK);
 255                 }
 256                 else if (childpid > 0)
 257                 {
 258                         // Wait until the child process kills the parent so that the shell prompt
 259                         // doesnt display over the output. Sending a kill with a signal of 0 just
 260                         // checks that the child pid is still running. If it is not then an error
 261                         // happened and the parent should exit.
 262                         while (kill(childpid, 0) != -1)
 263                                 sleep(1);
 264                         exit(EXIT_STATUS_NOERROR);
 265                 }
 266                 else
 267                 {
 268                         setsid();
 269                         signal(SIGTERM, InspIRCd::SetSignal);
 270                         SocketEngine::RecoverFromFork();
 271                 }
 272 #endif
 273         }
 274
 275         // Increase the size of a core dump file to improve debugging problems.
 276         void IncreaseCoreDumpSize()
 277         {
 278 #ifndef _WIN32
 279                 errno = 0;
 280                 rlimit rl;
 281                 if (getrlimit(RLIMIT_CORE, &rl) == -1)
 282                 {
 283                         ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "Unable to increase core dump size: getrlimit(RLIMIT_CORE) failed: %s", strerror(errno));
 284                         return;
 285                 }
 286
 287                 rl.rlim_cur = rl.rlim_max;
 288                 if (setrlimit(RLIMIT_CORE, &rl) == -1)
 289                         ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "Unable to increase core dump size: setrlimit(RLIMIT_CORE) failed: %s", strerror(errno));
 290 #endif
 291         }
 292
 293         // Parses the command line options.
 294         void ParseOptions()
 295         {
 296                 int do_debug = 0, do_nofork = 0,    do_nolog = 0;
 297                 int do_nopid = 0, do_runasroot = 0, do_version = 0;
 298                 struct option longopts[] =
 299                 {
 300                         { "config",    required_argument, NULL,          'c' },
 301                         { "debug",     no_argument,       &do_debug,     1 },
 302                         { "nofork",    no_argument,       &do_nofork,    1 },
 303                         { "nolog",     no_argument,       &do_nolog,     1 },
 304                         { "nopid",     no_argument,       &do_nopid,     1 },
 305                         { "runasroot", no_argument,       &do_runasroot, 1 },
 306                         { "version",   no_argument,       &do_version,   1 },
 307                         { 0, 0, 0, 0 }
 308                 };
 309
 310                 char** argv = ServerInstance->Config->cmdline.argv;
 311                 int ret;
 312                 while ((ret = getopt_long(ServerInstance->Config->cmdline.argc, argv, ":c:", longopts, NULL)) != -1)
 313                 {
 314                         switch (ret)
 315                         {
 316                                 case 0:
 317                                         // A long option was specified.
 318                                         break;
 319
 320                                 case 'c':
 321                                         // The -c option was specified.
 322                                         ServerInstance->ConfigFileName = ExpandPath(optarg);
 323                                         break;
 324
 325                                 default:
 326                                         // An unknown option was specified.
 327                                         std::cout << con_red << "Error:" <<  con_reset << " unknown option '" << argv[optind] << "'." << std::endl
 328                                                 << con_bright << "Usage: " << con_reset << argv[0] << " [--config <file>] [--debug] [--nofork] [--nolog]" << std::endl
 329                                                 << std::string(strlen(argv[0]) + 8, ' ') << "[--nopid] [--runasroot] [--version]" << std::endl;
 330                                         ServerInstance->Exit(EXIT_STATUS_ARGV);
 331                                         break;
 332                         }
 333                 }
 334
 335                 if (do_version)
 336                 {
 337                         std::cout << INSPIRCD_VERSION << std::endl;
 338                         ServerInstance->Exit(EXIT_STATUS_NOERROR);
 339                 }
 340
 341                 // Store the relevant parsed arguments
 342                 ServerInstance->Config->cmdline.forcedebug = !!do_debug;
 343                 ServerInstance->Config->cmdline.nofork = !!do_nofork;
 344                 ServerInstance->Config->cmdline.runasroot = !!do_runasroot;
 345                 ServerInstance->Config->cmdline.writelog = !do_nolog;
 346                 ServerInstance->Config->cmdline.writepid = !do_nopid;
 347         }
 348         // Seeds the random number generator if applicable.
 349         void SeedRng(timespec ts)
 350         {
 351 #if defined _WIN32
 352                 srand(ts.tv_nsec ^ ts.tv_sec);
 353 #elif !defined HAS_ARC4RANDOM_BUF
 354                 srandom(ts.tv_nsec ^ ts.tv_sec);
 355 #endif
 356         }
 357
 358         // Sets handlers for various process signals.
 359         void SetSignals()
 360         {
 361 #ifndef _WIN32
 362                 signal(SIGALRM, SIG_IGN);
 363                 signal(SIGCHLD, SIG_IGN);
 364                 signal(SIGHUP, InspIRCd::SetSignal);
 365                 signal(SIGPIPE, SIG_IGN);
 366                 signal(SIGUSR1, SIG_IGN);
 367                 signal(SIGUSR2, SIG_IGN);
 368                 signal(SIGXFSZ, SIG_IGN);
 369 #endif
 370                 signal(SIGTERM, InspIRCd::SetSignal);
 371         }
 372
 373         void TryBindPorts()
 374         {
 375                 FailedPortList pl;
 376                 ServerInstance->BindPorts(pl);
 377
 378                 if (!pl.empty())
 379                 {
 380                         std::cout << con_red << "Warning!" << con_reset << " Some of your listener" << (pl.size() == 1 ? "s" : "") << " failed to bind:" << std::endl
 381                                 << std::endl;
 382
 383                         for (FailedPortList::const_iterator iter = pl.begin(); iter != pl.end(); ++iter)
 384                         {
 385                                 const FailedPort& fp = *iter;
 386                                 std::cout << "  " << con_bright << fp.sa.str() << con_reset << ": " << strerror(fp.error) << '.' << std::endl
 387                                         << "  " << "Created from <bind> tag at " << fp.tag->getTagLocation() << std::endl
 388                                         << std::endl;
 389                         }
 390
 391                         std::cout << con_bright << "Hints:" << con_reset << std::endl
 392                                 << "- For TCP/IP listeners try using a public IP address in <bind:address> instead" << std::endl
 393                                 << "  of * or leaving it blank." << std::endl
 394                                 << "- For UNIX socket listeners try enabling <bind:rewrite> to replace old sockets." << std::endl;
 395                 }
 396         }
 397
 398         // Required for returning the proper value of EXIT_SUCCESS for the parent process.
 399         void VoidSignalHandler(int)
 400         {
 401                 exit(EXIT_STATUS_NOERROR);
 402         }
 403 }
 404
 405 void InspIRCd::Cleanup()
 406 {
 407         // Close all listening sockets
 408         for (unsigned int i = 0; i < ports.size(); i++)
 409         {
 410                 ports[i]->cull();
 411                 delete ports[i];
 412         }
 413         ports.clear();
 414
 415         // Tell modules that we're shutting down.
 416         const std::string quitmsg = "Server shutting down";
 417         FOREACH_MOD(OnShutdown, (quitmsg));
 418
 419         // Disconnect all local users
 420         const UserManager::LocalList& list = Users.GetLocalUsers();
 421         while (!list.empty())
 422                 ServerInstance->Users.QuitUser(list.front(), quitmsg);
 423
 424         GlobalCulls.Apply();
 425         Modules->UnloadAll();
 426
 427         /* Delete objects dynamically allocated in constructor (destructor would be more appropriate, but we're likely exiting) */
 428         /* Must be deleted before modes as it decrements modelines */
 429         if (FakeClient)
 430         {
 431                 delete FakeClient->server;
 432                 FakeClient->cull();
 433         }
 434         stdalgo::delete_zero(this->FakeClient);
 435         stdalgo::delete_zero(this->XLines);
 436         stdalgo::delete_zero(this->Config);
 437         SocketEngine::Deinit();
 438         Logs->CloseLogs();
 439 }
 440
 441 void InspIRCd::WritePID(const std::string& filename, bool exitonfail)
 442 {
 443 #ifndef _WIN32
 444         if (!ServerInstance->Config->cmdline.writepid)
 445         {
 446                 this->Logs->Log("STARTUP", LOG_DEFAULT, "--nopid specified on command line; PID file not written.");
 447                 return;
 448         }
 449
 450         std::string fname = ServerInstance->Config->Paths.PrependRuntime(filename.empty() ? "inspircd.pid" : filename);
 451         std::ofstream outfile(fname.c_str());
 452         if (outfile.is_open())
 453         {
 454                 outfile << getpid();
 455                 outfile.close();
 456         }
 457         else
 458         {
 459                 if (exitonfail)
 460                         std::cout << "Failed to write PID-file '" << fname << "', exiting." << std::endl;
 461                 this->Logs->Log("STARTUP", LOG_DEFAULT, "Failed to write PID-file '%s'%s", fname.c_str(), (exitonfail ? ", exiting." : ""));
 462                 if (exitonfail)
 463                         Exit(EXIT_STATUS_PID);
 464         }
 465 #endif
 466 }
 467
 468 InspIRCd::InspIRCd(int argc, char** argv)
 469         : FakeClient(NULL)
 470         , ConfigFileName(INSPIRCD_CONFIG_PATH "/inspircd.conf")
 471         , ConfigThread(NULL)
 472         , Config(NULL)
 473         , XLines(NULL)
 474         , PI(&DefaultProtocolInterface)
 475         , GenRandom(&DefaultGenRandom)
 476         , IsChannel(&DefaultIsChannel)
 477         , IsNick(&DefaultIsNick)
 478         , IsIdent(&DefaultIsIdent)
 479 {
 480         ServerInstance = this;
 481
 482         UpdateTime();
 483         this->startup_time = TIME.tv_sec;
 484
 485         IncreaseCoreDumpSize();
 486         SeedRng(TIME);
 487         SocketEngine::Init();
 488
 489         this->Config = new ServerConfig;
 490         dynamic_reference_base::reset_all();
 491         this->XLines = new XLineManager;
 492
 493         this->Config->cmdline.argv = argv;
 494         this->Config->cmdline.argc = argc;
 495         ParseOptions();
 496
 497         {
 498                 ServiceProvider* provs[] =
 499                 {
 500                         &rfcevents.numeric, &rfcevents.join, &rfcevents.part, &rfcevents.kick, &rfcevents.quit, &rfcevents.nick,
 501                         &rfcevents.mode, &rfcevents.topic, &rfcevents.privmsg, &rfcevents.invite, &rfcevents.ping, &rfcevents.pong,
 502                         &rfcevents.error
 503                 };
 504                 Modules.AddServices(provs, sizeof(provs)/sizeof(provs[0]));
 505         }
 506
 507         std::cout << con_green << "InspIRCd - Internet Relay Chat Daemon" << con_reset << std::endl
 508                 << "See " << con_green << "/INFO" << con_reset << " for contributors & authors" << std::endl
 509                 << std::endl;
 510
 511         if (Config->cmdline.forcedebug)
 512         {
 513                 FILE* newstdout = fdopen(dup(STDOUT_FILENO), "w");
 514                 FileWriter* fw = new FileWriter(newstdout, 1);
 515                 FileLogStream* fls = new FileLogStream(LOG_RAWIO, fw);
 516                 Logs->AddLogTypes("*", fls, true);
 517         }
 518
 519         if (!FindConfigFile(ConfigFileName))
 520         {
 521                 this->Logs->Log("STARTUP", LOG_DEFAULT, "Unable to open config file %s", ConfigFileName.c_str());
 522                 std::cout << "ERROR: Cannot open config file: " << ConfigFileName << std::endl << "Exiting..." << std::endl;
 523                 Exit(EXIT_STATUS_CONFIG);
 524         }
 525
 526         SetSignals();
 527         if (!Config->cmdline.runasroot)
 528                 CheckRoot();
 529         if (!Config->cmdline.nofork)
 530                 ForkIntoBackground();
 531
 532         std::cout << "InspIRCd Process ID: " << con_green << getpid() << con_reset << std::endl;
 533
 534         /* During startup we read the configuration now, not in
 535          * a separate thread
 536          */
 537         this->Config->Read();
 538         this->Config->Apply(NULL, "");
 539         Logs->OpenFileLogs();
 540
 541         // If we don't have a SID, generate one based on the server name and the server description
 542         if (Config->sid.empty())
 543                 Config->sid = UIDGenerator::GenerateSID(Config->ServerName, Config->ServerDesc);
 544
 545         // Initialize the UID generator with our sid
 546         this->UIDGen.init(Config->sid);
 547
 548         // Create the server user for this server
 549         this->FakeClient = new FakeUser(Config->sid, Config->ServerName, Config->ServerDesc);
 550
 551         // This is needed as all new XLines are marked pending until ApplyLines() is called
 552         this->XLines->ApplyLines();
 553
 554         std::cout << std::endl;
 555
 556         TryBindPorts();
 557
 558         this->Modules->LoadAll();
 559
 560         // Build ISupport as ModuleManager::LoadAll() does not do it
 561         this->ISupport.Build();
 562
 563         std::cout << "InspIRCd is now running as '" << Config->ServerName << "'[" << Config->GetSID() << "] with " << SocketEngine::GetMaxFds() << " max open sockets" << std::endl;
 564
 565 #ifndef _WIN32
 566         if (!Config->cmdline.nofork)
 567         {
 568                 if (kill(getppid(), SIGTERM) == -1)
 569                 {
 570                         std::cout << "Error killing parent process: " << strerror(errno) << std::endl;
 571                         Logs->Log("STARTUP", LOG_DEFAULT, "Error killing parent process: %s",strerror(errno));
 572                 }
 573         }
 574
 575         /* Explicitly shut down stdio's stdin/stdout/stderr.
 576          *
 577          * The previous logic here was to only do this if stdio was connected to a controlling
 578          * terminal.  However, we must do this always to avoid information leaks and other
 579          * problems related to stdio.
 580          *
 581          * The only exception is if we are in debug mode.
 582          *
 583          *    -- nenolod
 584          */
 585         if ((!Config->cmdline.nofork) && (!Config->cmdline.forcedebug))
 586         {
 587                 int fd = open("/dev/null", O_RDWR);
 588
 589                 fclose(stdin);
 590                 fclose(stderr);
 591                 fclose(stdout);
 592
 593                 if (dup2(fd, STDIN_FILENO) < 0)
 594                         Logs->Log("STARTUP", LOG_DEFAULT, "Failed to dup /dev/null to stdin.");
 595                 if (dup2(fd, STDOUT_FILENO) < 0)
 596                         Logs->Log("STARTUP", LOG_DEFAULT, "Failed to dup /dev/null to stdout.");
 597                 if (dup2(fd, STDERR_FILENO) < 0)
 598                         Logs->Log("STARTUP", LOG_DEFAULT, "Failed to dup /dev/null to stderr.");
 599                 close(fd);
 600         }
 601         else
 602         {
 603                 Logs->Log("STARTUP", LOG_DEFAULT, "Keeping pseudo-tty open as we are running in the foreground.");
 604         }
 605 #else
 606         /* Set win32 service as running, if we are running as a service */
 607         SetServiceRunning();
 608
 609         // Handle forking
 610         if(!Config->cmdline.nofork)
 611         {
 612                 FreeConsole();
 613         }
 614
 615         QueryPerformanceFrequency(&stats.QPFrequency);
 616 #endif
 617
 618         WritePID(Config->PID);
 619         DropRoot();
 620
 621         Logs->Log("STARTUP", LOG_DEFAULT, "Startup complete as '%s'[%s], %lu max open sockets", Config->ServerName.c_str(),Config->GetSID().c_str(), SocketEngine::GetMaxFds());
 622 }
 623
 624 void InspIRCd::UpdateTime()
 625 {
 626 #if defined HAS_CLOCK_GETTIME
 627         clock_gettime(CLOCK_REALTIME, &TIME);
 628 #elif defined _WIN32
 629         SYSTEMTIME st;
 630         GetSystemTime(&st);
 631
 632         TIME.tv_sec = time(NULL);
 633         TIME.tv_nsec = st.wMilliseconds;
 634 #else
 635         struct timeval tv;
 636         gettimeofday(&tv, NULL);
 637
 638         TIME.tv_sec = tv.tv_sec;
 639         TIME.tv_nsec = tv.tv_usec * 1000;
 640 #endif
 641 }
 642
 643 void InspIRCd::Run()
 644 {
 645         UpdateTime();
 646         time_t OLDTIME = TIME.tv_sec;
 647
 648         while (true)
 649         {
 650                 /* Check if there is a config thread which has finished executing but has not yet been freed */
 651                 if (this->ConfigThread && this->ConfigThread->IsDone())
 652                 {
 653                         /* Rehash has completed */
 654                         this->Logs->Log("CONFIG", LOG_DEBUG, "Detected ConfigThread exiting, tidying up...");
 655
 656                         this->ConfigThread->Finish();
 657
 658                         ConfigThread->join();
 659                         delete ConfigThread;
 660                         ConfigThread = NULL;
 661                 }
 662
 663                 UpdateTime();
 664
 665                 /* Run background module timers every few seconds
 666                  * (the docs say modules should not rely on accurate
 667                  * timing using this event, so we dont have to
 668                  * time this exactly).
 669                  */
 670                 if (TIME.tv_sec != OLDTIME)
 671                 {
 672                         CollectStats();
 673                         CheckTimeSkip(OLDTIME, TIME.tv_sec);
 674
 675                         OLDTIME = TIME.tv_sec;
 676
 677                         if ((TIME.tv_sec % 3600) == 0)
 678                                 FOREACH_MOD(OnGarbageCollect, ());
 679
 680                         Timers.TickTimers(TIME.tv_sec);
 681                         Users->DoBackgroundUserStuff();
 682
 683                         if ((TIME.tv_sec % 5) == 0)
 684                         {
 685                                 FOREACH_MOD(OnBackgroundTimer, (TIME.tv_sec));
 686                                 SNO->FlushSnotices();
 687                         }
 688                 }
 689
 690                 /* Call the socket engine to wait on the active
 691                  * file descriptors. The socket engine has everything's
 692                  * descriptors in its list... dns, modules, users,
 693                  * servers... so its nice and easy, just one call.
 694                  * This will cause any read or write events to be
 695                  * dispatched to their handlers.
 696                  */
 697                 SocketEngine::DispatchTrialWrites();
 698                 SocketEngine::DispatchEvents();
 699
 700                 /* if any users were quit, take them out */
 701                 GlobalCulls.Apply();
 702                 AtomicActions.Run();
 703
 704                 if (s_signal)
 705                 {
 706                         this->SignalHandler(s_signal);
 707                         s_signal = 0;
 708                 }
 709         }
 710 }
 711
 712 sig_atomic_t InspIRCd::s_signal = 0;
 713
 714 void InspIRCd::SetSignal(int signal)
 715 {
 716         s_signal = signal;
 717 }
 718
 719 /* On posix systems, the flow of the program starts right here, with
 720  * ENTRYPOINT being a #define that defines main(). On Windows, ENTRYPOINT
 721  * defines smain() and the real main() is in the service code under
 722  * win32service.cpp. This allows the service control manager to control
 723  * the process where we are running as a windows service.
 724  */
 725 ENTRYPOINT
 726 {
 727         new InspIRCd(argc, argv);
 728         ServerInstance->Run();
 729         delete ServerInstance;
 730         return 0;
 731 }