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         // Deletes a pointer and then zeroes it.
  84         template<typename T>
  85         void DeleteZero(T*& pr)
  86         {
  87                 T* p = pr;
  88                 pr = NULL;
  89                 delete p;
  90         }
  91
  92         // Drops to the unprivileged user/group specified in <security:runas{user,group}>.
  93         void DropRoot()
  94         {
  95 #ifndef _WIN32
  96                 ConfigTag* security = ServerInstance->Config->ConfValue("security");
  97
  98                 const std::string SetGroup = security->getString("runasgroup");
  99                 if (!SetGroup.empty())
 100                 {
 101                         errno = 0;
 102                         if (setgroups(0, NULL) == -1)
 103                         {
 104                                 ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "setgroups() failed (wtf?): %s", strerror(errno));
 105                                 exit(EXIT_STATUS_CONFIG);
 106                         }
 107
 108                         struct group* g = getgrnam(SetGroup.c_str());
 109                         if (!g)
 110                         {
 111                                 ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "getgrnam(%s) failed (wrong group?): %s", SetGroup.c_str(), strerror(errno));
 112                                 exit(EXIT_STATUS_CONFIG);
 113                         }
 114
 115                         if (setgid(g->gr_gid) == -1)
 116                         {
 117                                 ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "setgid(%d) failed (wrong group?): %s", g->gr_gid, strerror(errno));
 118                                 exit(EXIT_STATUS_CONFIG);
 119                         }
 120                 }
 121
 122                 const std::string SetUser = security->getString("runasuser");
 123                 if (!SetUser.empty())
 124                 {
 125                         errno = 0;
 126                         struct passwd* u = getpwnam(SetUser.c_str());
 127                         if (!u)
 128                         {
 129                                 ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "getpwnam(%s) failed (wrong user?): %s", SetUser.c_str(), strerror(errno));
 130                                 exit(EXIT_STATUS_CONFIG);
 131                         }
 132
 133                         if (setuid(u->pw_uid) == -1)
 134                         {
 135                                 ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "setuid(%d) failed (wrong user?): %s", u->pw_uid, strerror(errno));
 136                                 exit(EXIT_STATUS_CONFIG);
 137                         }
 138                 }
 139 #endif
 140         }
 141
 142         // Attempts to fork into the background.
 143         bool ForkIntoBackground()
 144         {
 145 #ifndef _WIN32
 146                 // We use VoidSignalHandler whilst forking to avoid breaking daemon scripts
 147                 // if the parent process exits with SIGTERM (15) instead of EXIT_STATUS_NOERROR (0).
 148                 signal(SIGTERM, VoidSignalHandler);
 149
 150                 errno = 0;
 151                 int childpid = fork();
 152                 if (childpid < 0)
 153                 {
 154                         ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "fork() failed: %s", strerror(errno));
 155                         return false;
 156                 }
 157                 else if (childpid > 0)
 158                 {
 159                         // Wait until the child process kills the parent so that the shell prompt
 160                         // doesnt display over the output. Sending a kill with a signal of 0 just
 161                         // checks that the child pid is still running. If it is not then an error
 162                         // happened and the parent should exit.
 163                         while (kill(childpid, 0) != -1)
 164                                 sleep(1);
 165                         exit(EXIT_STATUS_NOERROR);
 166                 }
 167                 else
 168                 {
 169                         setsid();
 170                         signal(SIGTERM, InspIRCd::SetSignal);
 171                         SocketEngine::RecoverFromFork();
 172                 }
 173 #endif
 174                 return true;
 175         }
 176
 177         // Increase the size of a core dump file to improve debugging problems.
 178         void IncreaseCoreDumpSize()
 179         {
 180 #ifndef _WIN32
 181                 errno = 0;
 182                 rlimit rl;
 183                 if (getrlimit(RLIMIT_CORE, &rl) == -1)
 184                 {
 185                         ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "Unable to increase core dump size: getrlimit(RLIMIT_CORE) failed: %s", strerror(errno));
 186                         return;
 187                 }
 188
 189                 rl.rlim_cur = rl.rlim_max;
 190                 if (setrlimit(RLIMIT_CORE, &rl) == -1)
 191                         ServerInstance->Logs->Log("STARTUP", LOG_DEFAULT, "Unable to increase core dump size: setrlimit(RLIMIT_CORE) failed: %s", strerror(errno));
 192 #endif
 193         }
 194
 195         // Seeds the random number generator if applicable.
 196         void SeedRng(timespec ts)
 197         {
 198 #if defined _WIN32
 199                 srand(ts.tv_nsec ^ ts.tv_sec);
 200 #elif !defined HAS_ARC4RANDOM_BUF
 201                 srandom(ts.tv_nsec ^ ts.tv_sec);
 202 #endif
 203         }
 204
 205         // Sets handlers for various process signals.
 206         void SetSignals()
 207         {
 208 #ifndef _WIN32
 209                 signal(SIGALRM, SIG_IGN);
 210                 signal(SIGCHLD, SIG_IGN);
 211                 signal(SIGHUP, InspIRCd::SetSignal);
 212                 signal(SIGPIPE, SIG_IGN);
 213                 signal(SIGUSR1, SIG_IGN);
 214                 signal(SIGUSR2, SIG_IGN);
 215                 signal(SIGXFSZ, SIG_IGN);
 216 #endif
 217                 signal(SIGTERM, InspIRCd::SetSignal);
 218         }
 219
 220         // Required for returning the proper value of EXIT_SUCCESS for the parent process.
 221         void VoidSignalHandler(int)
 222         {
 223                 exit(EXIT_STATUS_NOERROR);
 224         }
 225 }
 226
 227 void InspIRCd::Cleanup()
 228 {
 229         // Close all listening sockets
 230         for (unsigned int i = 0; i < ports.size(); i++)
 231         {
 232                 ports[i]->cull();
 233                 delete ports[i];
 234         }
 235         ports.clear();
 236
 237         // Tell modules that we're shutting down.
 238         const std::string quitmsg = "Server shutting down";
 239         FOREACH_MOD(OnShutdown, (quitmsg));
 240
 241         // Disconnect all local users
 242         const UserManager::LocalList& list = Users.GetLocalUsers();
 243         while (!list.empty())
 244                 ServerInstance->Users.QuitUser(list.front(), quitmsg);
 245
 246         GlobalCulls.Apply();
 247         Modules->UnloadAll();
 248
 249         /* Delete objects dynamically allocated in constructor (destructor would be more appropriate, but we're likely exiting) */
 250         /* Must be deleted before modes as it decrements modelines */
 251         if (FakeClient)
 252         {
 253                 delete FakeClient->server;
 254                 FakeClient->cull();
 255         }
 256         DeleteZero(this->FakeClient);
 257         DeleteZero(this->XLines);
 258         DeleteZero(this->Config);
 259         SocketEngine::Deinit();
 260         Logs->CloseLogs();
 261 }
 262
 263 void InspIRCd::WritePID(const std::string& filename, bool exitonfail)
 264 {
 265 #ifndef _WIN32
 266         if (!ServerInstance->Config->cmdline.writepid)
 267         {
 268                 this->Logs->Log("STARTUP", LOG_DEFAULT, "--nopid specified on command line; PID file not written.");
 269                 return;
 270         }
 271
 272         std::string fname = ServerInstance->Config->Paths.PrependData(filename.empty() ? "inspircd.pid" : filename);
 273         std::ofstream outfile(fname.c_str());
 274         if (outfile.is_open())
 275         {
 276                 outfile << getpid();
 277                 outfile.close();
 278         }
 279         else
 280         {
 281                 if (exitonfail)
 282                         std::cout << "Failed to write PID-file '" << fname << "', exiting." << std::endl;
 283                 this->Logs->Log("STARTUP", LOG_DEFAULT, "Failed to write PID-file '%s'%s", fname.c_str(), (exitonfail ? ", exiting." : ""));
 284                 if (exitonfail)
 285                         Exit(EXIT_STATUS_PID);
 286         }
 287 #endif
 288 }
 289
 290 InspIRCd::InspIRCd(int argc, char** argv)
 291         : FakeClient(NULL)
 292         , ConfigFileName(INSPIRCD_CONFIG_PATH "/inspircd.conf")
 293         , ConfigThread(NULL)
 294         , Config(NULL)
 295         , XLines(NULL)
 296         , PI(&DefaultProtocolInterface)
 297         , GenRandom(&DefaultGenRandom)
 298         , IsChannel(&DefaultIsChannel)
 299         , IsNick(&DefaultIsNick)
 300         , IsIdent(&DefaultIsIdent)
 301 {
 302         ServerInstance = this;
 303
 304         UpdateTime();
 305         this->startup_time = TIME.tv_sec;
 306
 307         SeedRng(TIME);
 308         SocketEngine::Init();
 309
 310         this->Config = new ServerConfig;
 311         dynamic_reference_base::reset_all();
 312         this->XLines = new XLineManager;
 313
 314         this->Config->cmdline.argv = argv;
 315         this->Config->cmdline.argc = argc;
 316
 317 #ifdef _WIN32
 318         // Initialize the console values
 319         g_hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
 320         CONSOLE_SCREEN_BUFFER_INFO bufinf;
 321         if(GetConsoleScreenBufferInfo(g_hStdout, &bufinf))
 322         {
 323                 g_wOriginalColors = bufinf.wAttributes & 0x00FF;
 324                 g_wBackgroundColor = bufinf.wAttributes & 0x00F0;
 325         }
 326         else
 327         {
 328                 g_wOriginalColors = FOREGROUND_RED|FOREGROUND_BLUE|FOREGROUND_GREEN;
 329                 g_wBackgroundColor = 0;
 330         }
 331 #endif
 332
 333         {
 334                 ServiceProvider* provs[] =
 335                 {
 336                         &rfcevents.numeric, &rfcevents.join, &rfcevents.part, &rfcevents.kick, &rfcevents.quit, &rfcevents.nick,
 337                         &rfcevents.mode, &rfcevents.topic, &rfcevents.privmsg, &rfcevents.invite, &rfcevents.ping, &rfcevents.pong,
 338                         &rfcevents.error
 339                 };
 340                 Modules.AddServices(provs, sizeof(provs)/sizeof(provs[0]));
 341         }
 342
 343         // Flag variables passed to getopt_long() later
 344         int do_version = 0, do_nofork = 0, do_debug = 0,
 345                 do_nolog = 0, do_nopid = 0, do_root = 0;
 346         struct option longopts[] =
 347         {
 348                 { "nofork",     no_argument,            &do_nofork,     1       },
 349                 { "config",     required_argument,      NULL,           'c'     },
 350                 { "debug",      no_argument,            &do_debug,      1       },
 351                 { "nolog",      no_argument,            &do_nolog,      1       },
 352                 { "nopid",      no_argument,            &do_nopid,      1       },
 353                 { "runasroot",  no_argument,            &do_root,       1       },
 354                 { "version",    no_argument,            &do_version,    1       },
 355                 { 0, 0, 0, 0 }
 356         };
 357
 358         int c;
 359         int index;
 360         while ((c = getopt_long(argc, argv, ":c:", longopts, &index)) != -1)
 361         {
 362                 switch (c)
 363                 {
 364                         case 'c':
 365                                 /* Config filename was set */
 366                                 ConfigFileName = optarg;
 367 #ifdef _WIN32
 368                                 TCHAR configPath[MAX_PATH + 1];
 369                                 if (GetFullPathName(optarg, MAX_PATH, configPath, NULL) > 0)
 370                                         ConfigFileName = configPath;
 371 #else
 372                                 char configPath[PATH_MAX + 1];
 373                                 if (realpath(optarg, configPath))
 374                                         ConfigFileName = configPath;
 375 #endif
 376                         break;
 377                         case 0:
 378                                 /* getopt_long_only() set an int variable, just keep going */
 379                         break;
 380                         case '?':
 381                                 /* Unknown parameter */
 382                         default:
 383                                 /* Fall through to handle other weird values too */
 384                                 std::cout << "Unknown parameter '" << argv[optind-1] << "'" << std::endl;
 385                                 std::cout << "Usage: " << argv[0] << " [--nofork] [--nolog] [--nopid] [--debug] [--config <config>]" << std::endl <<
 386                                         std::string(static_cast<size_t>(8+strlen(argv[0])), ' ') << "[--runasroot] [--version]" << std::endl;
 387                                 Exit(EXIT_STATUS_ARGV);
 388                         break;
 389                 }
 390         }
 391
 392         if (do_version)
 393         {
 394                 std::cout << std::endl << INSPIRCD_VERSION << std::endl;
 395                 Exit(EXIT_STATUS_NOERROR);
 396         }
 397
 398 #ifdef _WIN32
 399         // Set up winsock
 400         WSADATA wsadata;
 401         WSAStartup(MAKEWORD(2,2), &wsadata);
 402 #endif
 403
 404         /* Set the finished argument values */
 405         Config->cmdline.nofork = (do_nofork != 0);
 406         Config->cmdline.forcedebug = (do_debug != 0);
 407         Config->cmdline.writelog = !do_nolog;
 408         Config->cmdline.writepid = !do_nopid;
 409
 410         if (do_debug)
 411         {
 412                 FileWriter* fw = new FileWriter(stdout, 1);
 413                 FileLogStream* fls = new FileLogStream(LOG_RAWIO, fw);
 414                 Logs->AddLogTypes("*", fls, true);
 415         }
 416
 417         if (!FileSystem::FileExists(ConfigFileName))
 418         {
 419 #ifdef _WIN32
 420                 /* Windows can (and defaults to) hide file extensions, so let's play a bit nice for windows users. */
 421                 std::string txtconf = this->ConfigFileName;
 422                 txtconf.append(".txt");
 423
 424                 if (FileSystem::FileExists(txtconf))
 425                 {
 426                         ConfigFileName = txtconf;
 427                 }
 428                 else
 429 #endif
 430                 {
 431                         std::cout << "ERROR: Cannot open config file: " << ConfigFileName << std::endl << "Exiting..." << std::endl;
 432                         this->Logs->Log("STARTUP", LOG_DEFAULT, "Unable to open config file %s", ConfigFileName.c_str());
 433                         Exit(EXIT_STATUS_CONFIG);
 434                 }
 435         }
 436
 437         std::cout << con_green << "InspIRCd - Internet Relay Chat Daemon" << con_reset << std::endl;
 438         std::cout << "For contributors & authors: " << con_green << "See /INFO Output" << con_reset << std::endl;
 439
 440 #ifndef _WIN32
 441         if (!do_root)
 442                 this->CheckRoot();
 443         else
 444         {
 445                 std::cout << "* WARNING * WARNING * WARNING * WARNING * WARNING *" << std::endl
 446                 << "YOU ARE RUNNING INSPIRCD AS ROOT. THIS IS UNSUPPORTED" << std::endl
 447                 << "AND IF YOU ARE HACKED, CRACKED, SPINDLED OR MUTILATED" << std::endl
 448                 << "OR ANYTHING ELSE UNEXPECTED HAPPENS TO YOU OR YOUR" << std::endl
 449                 << "SERVER, THEN IT IS YOUR OWN FAULT. IF YOU DID NOT MEAN" << std::endl
 450                 << "TO START INSPIRCD AS ROOT, HIT CTRL+C NOW AND RESTART" << std::endl
 451                 << "THE PROGRAM AS A NORMAL USER. YOU HAVE BEEN WARNED!" << std::endl << std::endl
 452                 << "InspIRCd starting in 20 seconds, ctrl+c to abort..." << std::endl;
 453                 sleep(20);
 454         }
 455 #endif
 456
 457         SetSignals();
 458
 459         if (!Config->cmdline.nofork && !ForkIntoBackground())
 460         {
 461                 std::cout << "ERROR: could not go into daemon mode. Shutting down." << std::endl;
 462                 Logs->Log("STARTUP", LOG_DEFAULT, "ERROR: could not go into daemon mode. Shutting down.");
 463                 Exit(EXIT_STATUS_FORK);
 464         }
 465
 466         std::cout << "InspIRCd Process ID: " << con_green << getpid() << con_reset << std::endl;
 467
 468         IncreaseCoreDumpSize();
 469
 470         /* During startup we read the configuration now, not in
 471          * a seperate thread
 472          */
 473         this->Config->Read();
 474         this->Config->Apply(NULL, "");
 475         Logs->OpenFileLogs();
 476
 477         // If we don't have a SID, generate one based on the server name and the server description
 478         if (Config->sid.empty())
 479                 Config->sid = UIDGenerator::GenerateSID(Config->ServerName, Config->ServerDesc);
 480
 481         // Initialize the UID generator with our sid
 482         this->UIDGen.init(Config->sid);
 483
 484         // Create the server user for this server
 485         this->FakeClient = new FakeUser(Config->sid, Config->ServerName, Config->ServerDesc);
 486
 487         // This is needed as all new XLines are marked pending until ApplyLines() is called
 488         this->XLines->ApplyLines();
 489
 490         FailedPortList pl;
 491         int bounditems = BindPorts(pl);
 492
 493         std::cout << std::endl;
 494
 495         this->Modules->LoadAll();
 496
 497         // Build ISupport as ModuleManager::LoadAll() does not do it
 498         this->ISupport.Build();
 499
 500         if (!pl.empty())
 501         {
 502                 std::cout << std::endl << "WARNING: Not all your client ports could be bound -- " << std::endl << "starting anyway with " << bounditems
 503                         << " of " << bounditems + (int)pl.size() << " client ports bound." << std::endl << std::endl;
 504                 std::cout << "The following port(s) failed to bind:" << std::endl << std::endl;
 505                 int j = 1;
 506                 for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 507                 {
 508                         std::cout << j << ".\tAddress: " << i->first.str() << " \tReason: " << strerror(i->second) << std::endl;
 509                 }
 510
 511                 std::cout << std::endl << "Hint: Try using a public IP instead of blank or *" << std::endl;
 512         }
 513
 514         std::cout << "InspIRCd is now running as '" << Config->ServerName << "'[" << Config->GetSID() << "] with " << SocketEngine::GetMaxFds() << " max open sockets" << std::endl;
 515
 516 #ifndef _WIN32
 517         if (!Config->cmdline.nofork)
 518         {
 519                 if (kill(getppid(), SIGTERM) == -1)
 520                 {
 521                         std::cout << "Error killing parent process: " << strerror(errno) << std::endl;
 522                         Logs->Log("STARTUP", LOG_DEFAULT, "Error killing parent process: %s",strerror(errno));
 523                 }
 524         }
 525
 526         /* Explicitly shut down stdio's stdin/stdout/stderr.
 527          *
 528          * The previous logic here was to only do this if stdio was connected to a controlling
 529          * terminal.  However, we must do this always to avoid information leaks and other
 530          * problems related to stdio.
 531          *
 532          * The only exception is if we are in debug mode.
 533          *
 534          *    -- nenolod
 535          */
 536         if ((!do_nofork) && (!Config->cmdline.forcedebug))
 537         {
 538                 int fd = open("/dev/null", O_RDWR);
 539
 540                 fclose(stdin);
 541                 fclose(stderr);
 542                 fclose(stdout);
 543
 544                 if (dup2(fd, STDIN_FILENO) < 0)
 545                         Logs->Log("STARTUP", LOG_DEFAULT, "Failed to dup /dev/null to stdin.");
 546                 if (dup2(fd, STDOUT_FILENO) < 0)
 547                         Logs->Log("STARTUP", LOG_DEFAULT, "Failed to dup /dev/null to stdout.");
 548                 if (dup2(fd, STDERR_FILENO) < 0)
 549                         Logs->Log("STARTUP", LOG_DEFAULT, "Failed to dup /dev/null to stderr.");
 550                 close(fd);
 551         }
 552         else
 553         {
 554                 Logs->Log("STARTUP", LOG_DEFAULT, "Keeping pseudo-tty open as we are running in the foreground.");
 555         }
 556 #else
 557         /* Set win32 service as running, if we are running as a service */
 558         SetServiceRunning();
 559
 560         // Handle forking
 561         if(!do_nofork)
 562         {
 563                 FreeConsole();
 564         }
 565
 566         QueryPerformanceFrequency(&stats.QPFrequency);
 567 #endif
 568
 569         WritePID(Config->PID);
 570         DropRoot();
 571
 572         Logs->Log("STARTUP", LOG_DEFAULT, "Startup complete as '%s'[%s], %lu max open sockets", Config->ServerName.c_str(),Config->GetSID().c_str(), SocketEngine::GetMaxFds());
 573 }
 574
 575 void InspIRCd::UpdateTime()
 576 {
 577 #if defined HAS_CLOCK_GETTIME
 578         clock_gettime(CLOCK_REALTIME, &TIME);
 579 #elif defined _WIN32
 580         SYSTEMTIME st;
 581         GetSystemTime(&st);
 582
 583         TIME.tv_sec = time(NULL);
 584         TIME.tv_nsec = st.wMilliseconds;
 585 #else
 586         struct timeval tv;
 587         gettimeofday(&tv, NULL);
 588
 589         TIME.tv_sec = tv.tv_sec;
 590         TIME.tv_nsec = tv.tv_usec * 1000;
 591 #endif
 592 }
 593
 594 void InspIRCd::Run()
 595 {
 596         UpdateTime();
 597         time_t OLDTIME = TIME.tv_sec;
 598
 599         while (true)
 600         {
 601 #ifndef _WIN32
 602                 static rusage ru;
 603 #endif
 604
 605                 /* Check if there is a config thread which has finished executing but has not yet been freed */
 606                 if (this->ConfigThread && this->ConfigThread->IsDone())
 607                 {
 608                         /* Rehash has completed */
 609                         this->Logs->Log("CONFIG", LOG_DEBUG, "Detected ConfigThread exiting, tidying up...");
 610
 611                         this->ConfigThread->Finish();
 612
 613                         ConfigThread->join();
 614                         delete ConfigThread;
 615                         ConfigThread = NULL;
 616                 }
 617
 618                 UpdateTime();
 619
 620                 /* Run background module timers every few seconds
 621                  * (the docs say modules shouldnt rely on accurate
 622                  * timing using this event, so we dont have to
 623                  * time this exactly).
 624                  */
 625                 if (TIME.tv_sec != OLDTIME)
 626                 {
 627 #ifndef _WIN32
 628                         getrusage(RUSAGE_SELF, &ru);
 629                         stats.LastSampled = TIME;
 630                         stats.LastCPU = ru.ru_utime;
 631 #else
 632                         if(QueryPerformanceCounter(&stats.LastSampled))
 633                         {
 634                                 FILETIME CreationTime;
 635                                 FILETIME ExitTime;
 636                                 FILETIME KernelTime;
 637                                 FILETIME UserTime;
 638                                 GetProcessTimes(GetCurrentProcess(), &CreationTime, &ExitTime, &KernelTime, &UserTime);
 639                                 stats.LastCPU.dwHighDateTime = KernelTime.dwHighDateTime + UserTime.dwHighDateTime;
 640                                 stats.LastCPU.dwLowDateTime = KernelTime.dwLowDateTime + UserTime.dwLowDateTime;
 641                         }
 642 #endif
 643
 644                         if (Config->TimeSkipWarn)
 645                         {
 646                                 time_t timediff = TIME.tv_sec - OLDTIME;
 647
 648                                 if (timediff > Config->TimeSkipWarn)
 649                                         SNO->WriteToSnoMask('a', "\002Performance warning!\002 Server clock jumped forwards by %lu seconds!", timediff);
 650
 651                                 else if (timediff < -Config->TimeSkipWarn)
 652                                         SNO->WriteToSnoMask('a', "\002Performance warning!\002 Server clock jumped backwards by %lu seconds!", labs(timediff));
 653                         }
 654
 655                         OLDTIME = TIME.tv_sec;
 656
 657                         if ((TIME.tv_sec % 3600) == 0)
 658                         {
 659                                 FOREACH_MOD(OnGarbageCollect, ());
 660
 661                                 // HACK: ELines are not expired properly at the moment but it can't be fixed as
 662                                 // the 2.0 XLine system is a spaghetti nightmare. Instead we skip over expired
 663                                 // ELines in XLineManager::CheckELines() and expire them here instead.
 664                                 XLines->GetAll("E");
 665                         }
 666
 667                         Timers.TickTimers(TIME.tv_sec);
 668                         Users->DoBackgroundUserStuff();
 669
 670                         if ((TIME.tv_sec % 5) == 0)
 671                         {
 672                                 FOREACH_MOD(OnBackgroundTimer, (TIME.tv_sec));
 673                                 SNO->FlushSnotices();
 674                         }
 675                 }
 676
 677                 /* Call the socket engine to wait on the active
 678                  * file descriptors. The socket engine has everything's
 679                  * descriptors in its list... dns, modules, users,
 680                  * servers... so its nice and easy, just one call.
 681                  * This will cause any read or write events to be
 682                  * dispatched to their handlers.
 683                  */
 684                 SocketEngine::DispatchTrialWrites();
 685                 SocketEngine::DispatchEvents();
 686
 687                 /* if any users were quit, take them out */
 688                 GlobalCulls.Apply();
 689                 AtomicActions.Run();
 690
 691                 if (s_signal)
 692                 {
 693                         this->SignalHandler(s_signal);
 694                         s_signal = 0;
 695                 }
 696         }
 697 }
 698
 699 sig_atomic_t InspIRCd::s_signal = 0;
 700
 701 void InspIRCd::SetSignal(int signal)
 702 {
 703         s_signal = signal;
 704 }
 705
 706 /* On posix systems, the flow of the program starts right here, with
 707  * ENTRYPOINT being a #define that defines main(). On Windows, ENTRYPOINT
 708  * defines smain() and the real main() is in the service code under
 709  * win32service.cpp. This allows the service control manager to control
 710  * the process where we are running as a windows service.
 711  */
 712 ENTRYPOINT
 713 {
 714         new InspIRCd(argc, argv);
 715         ServerInstance->Run();
 716         delete ServerInstance;
 717         return 0;
 718 }