src/inspircd.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include "inspircd.h"
  15 #include "configreader.h"
  16 #include <signal.h>
  17 #ifndef WIN32
  18
  19 #include <dirent.h>
  20 #include <unistd.h>
  21 #include <sys/resource.h>
  22
  23 /* This is just to be completely certain that the change which fixed getrusage on RH7 doesn't break anything else -- Om */
  24 #ifndef RUSAGE_SELF
  25 #define RUSAGE_SELF 0
  26 #endif
  27
  28 #endif
  29 #include <exception>
  30 #include <fstream>
  31 #include "modules.h"
  32 #include "mode.h"
  33 #include "xline.h"
  34 #include "socketengine.h"
  35 #include "inspircd_se_config.h"
  36 #include "socket.h"
  37 #include "typedefs.h"
  38 #include "command_parse.h"
  39 #include "exitcodes.h"
  40
  41 #ifndef WIN32
  42 #include <dlfcn.h>
  43 #include <getopt.h>
  44 #else
  45 static DWORD owner_processid = 0;
  46
  47 DWORD WindowsForkStart(InspIRCd * Instance)
  48 {
  49         /* Windows implementation of fork() :P */
  50         // Build the command line arguments.
  51         string command_line;
  52         for(int i = 0; i < Instance->Config->argc; ++i)
  53         {
  54                 command_line += Instance->Config->argv[i];
  55                 if(Instance->Config->argc != i+1)
  56                         command_line += " ";
  57         }
  58
  59         char module[MAX_PATH];
  60         if(!GetModuleFileName(NULL, module, MAX_PATH))
  61         {
  62                 printf("GetModuleFileName() failed.\n");
  63                 return false;
  64         }
  65         else
  66         {
  67                 printf("Launch '%s' '%s'\n", module, GetCommandLine());
  68         }
  69
  70         STARTUPINFO startupinfo;
  71         PROCESS_INFORMATION procinfo;
  72         ZeroMemory(&startupinfo, sizeof(STARTUPINFO));
  73         ZeroMemory(&procinfo, sizeof(PROCESS_INFORMATION));
  74
  75         // Fill in the startup info struct
  76         GetStartupInfo(&startupinfo);
  77
  78         // Launch our "forked" process.
  79         BOOL bSuccess = CreateProcess ( module, GetCommandLine(),
  80                 0,                                                                      // PROCESS_SECURITY_ATTRIBUTES
  81                 0,                                                                      // THREAD_SECURITY_ATTRIBUTES
  82                 TRUE,                                                           // We went to inherit handles.
  83                 CREATE_SUSPENDED                                        // Suspend the primary thread of the new process
  84                 /*| CREATE_PRESERVE_CODE_AUTHZ_LEVEL*/, // Allow us full access to the process
  85                 0,                                                                      // ENVIRONMENT
  86                 0,                                                                      // CURRENT_DIRECTORY
  87                 &startupinfo,                                           // startup info
  88                 &procinfo);                                                     // process info
  89
  90         if(!bSuccess)
  91         {
  92                 printf("CreateProcess() failed.\n");
  93                 printf("CreateProcess() %s\n", dlerror());
  94                 return false;
  95         }
  96
  97         // Set the owner process id in the target process.
  98         SIZE_T written = 0;
  99         DWORD pid = GetCurrentProcessId();
 100         if(!WriteProcessMemory(procinfo.hProcess, &owner_processid, &pid, sizeof(DWORD), &written) || written != sizeof(DWORD))
 101         {
 102                 printf("WriteProcessMemory() failed.\n");
 103                 return false;
 104         }
 105
 106         // Resume the other thread (let it start)
 107         ResumeThread(procinfo.hThread);
 108
 109         // Wait for the new process to kill us. If there is some error, the new process will end and we will end up at the next line.
 110         WaitForSingleObject(procinfo.hProcess, INFINITE);
 111
 112         // If we hit this it means startup failed, default to 14 if this fails.
 113         DWORD ExitCode = 14;
 114         GetExitCodeProcess(procinfo.hProcess, &ExitCode);
 115         printf("Startup failed, exitcode was %u.\n", ExitCode);
 116         CloseHandle(procinfo.hThread);
 117         CloseHandle(procinfo.hProcess);
 118         return ExitCode;
 119 }
 120
 121 void WindowsForkKillOwner(InspIRCd * Instance)
 122 {
 123         HANDLE hProcess = OpenProcess(PROCESS_TERMINATE, FALSE, owner_processid);
 124         if(!hProcess || !owner_processid)
 125         {
 126                 printf("Could not open process id %u.\n", owner_processid);
 127                 Instance->Exit(14);
 128         }
 129
 130         // die die die
 131         if(!TerminateProcess(hProcess, 0))
 132         {
 133                 printf("Could not TerminateProcess().\n");
 134                 Instance->Exit(14);
 135         }
 136
 137         CloseHandle(hProcess);
 138 }
 139
 140 #endif
 141
 142 using irc::sockets::NonBlocking;
 143 using irc::sockets::Blocking;
 144 using irc::sockets::insp_ntoa;
 145 using irc::sockets::insp_inaddr;
 146 using irc::sockets::insp_sockaddr;
 147
 148 InspIRCd* SI = NULL;
 149
 150 /* Burlex: Moved from exitcodes.h -- due to duplicate symbols */
 151 const char* ExitCodes[] =
 152 {
 153                 "No error", /* 0 */
 154                 "DIE command", /* 1 */
 155                 "execv() failed", /* 2 */
 156                 "Internal error", /* 3 */
 157                 "Config file error", /* 4 */
 158                 "Logfile error", /* 5 */
 159                 "Fork failed", /* 6 */
 160                 "Bad commandline parameters", /* 7 */
 161                 "No ports could be bound", /* 8 */
 162                 "Can't write PID file", /* 9 */
 163                 "SocketEngine could not initialize", /* 10 */
 164                 "Refusing to start up as root", /* 11 */
 165                 "Found a <die> tag!", /* 12 */
 166                 "Couldn't load module on startup", /* 13 */
 167                 "Could not create forked process", /* 14 */
 168                 "Received SIGTERM", /* 15 */
 169 };
 170
 171 void InspIRCd::AddServerName(const std::string &servername)
 172 {
 173         servernamelist::iterator itr = servernames.begin();
 174         for(; itr != servernames.end(); ++itr)
 175                 if(**itr == servername)
 176                         return;
 177
 178         string * ns = new string(servername);
 179         servernames.push_back(ns);
 180 }
 181
 182 const char* InspIRCd::FindServerNamePtr(const std::string &servername)
 183 {
 184         servernamelist::iterator itr = servernames.begin();
 185         for(; itr != servernames.end(); ++itr)
 186                 if(**itr == servername)
 187                         return (*itr)->c_str();
 188
 189         servernames.push_back(new string(servername));
 190         itr = --servernames.end();
 191         return (*itr)->c_str();
 192 }
 193
 194 bool InspIRCd::FindServerName(const std::string &servername)
 195 {
 196         servernamelist::iterator itr = servernames.begin();
 197         for(; itr != servernames.end(); ++itr)
 198                 if(**itr == servername)
 199                         return true;
 200         return false;
 201 }
 202
 203 void InspIRCd::Exit(int status)
 204 {
 205 #ifdef WINDOWS
 206         CloseIPC();
 207 #endif
 208         if (SI)
 209         {
 210                 SI->SendError("Exiting with status " + ConvToStr(status) + " (" + std::string(ExitCodes[status]) + ")");
 211                 SI->Cleanup();
 212         }
 213         exit (status);
 214 }
 215
 216 void InspIRCd::Cleanup()
 217 {
 218         std::vector<std::string> mymodnames;
 219         int MyModCount = this->GetModuleCount();
 220
 221         for (unsigned int i = 0; i < Config->ports.size(); i++)
 222         {
 223                 /* This calls the constructor and closes the listening socket */
 224                 delete Config->ports[i];
 225         }
 226
 227         Config->ports.clear();
 228
 229         /* Close all client sockets, or the new process inherits them */
 230         for (std::vector<userrec*>::const_iterator i = this->local_users.begin(); i != this->local_users.end(); i++)
 231         {
 232                 (*i)->SetWriteError("Server shutdown");
 233                 (*i)->CloseSocket();
 234         }
 235
 236         /* We do this more than once, so that any service providers get a
 237          * chance to be unhooked by the modules using them, but then get
 238          * a chance to be removed themsleves.
 239          */
 240         for (int tries = 0; tries < 3; tries++)
 241         {
 242                 MyModCount = this->GetModuleCount();
 243                 mymodnames.clear();
 244
 245                 /* Unload all modules, so they get a chance to clean up their listeners */
 246                 for (int j = 0; j <= MyModCount; j++)
 247                         mymodnames.push_back(Config->module_names[j]);
 248
 249                 for (int k = 0; k <= MyModCount; k++)
 250                         this->UnloadModule(mymodnames[k].c_str());
 251         }
 252
 253         /* Close logging */
 254         this->Logger->Close();
 255
 256         /* Cleanup Server Names */
 257         for(servernamelist::iterator itr = servernames.begin(); itr != servernames.end(); ++itr)
 258                 delete (*itr);
 259
 260 #ifdef WINDOWS
 261         /* WSACleanup */
 262         WSACleanup();
 263 #endif
 264 }
 265
 266 void InspIRCd::Restart(const std::string &reason)
 267 {
 268         /* SendError flushes each client's queue,
 269          * regardless of writeability state
 270          */
 271         this->SendError(reason);
 272
 273         this->Cleanup();
 274
 275         /* Figure out our filename (if theyve renamed it, we're boned) */
 276         std::string me;
 277
 278 #ifdef WINDOWS
 279         char module[MAX_PATH];
 280         if (GetModuleFileName(NULL, module, MAX_PATH))
 281                 me = module;
 282 #else
 283         me = Config->MyDir + "/inspircd";
 284 #endif
 285
 286         if (execv(me.c_str(), Config->argv) == -1)
 287         {
 288                 /* Will raise a SIGABRT if not trapped */
 289                 throw CoreException(std::string("Failed to execv()! error: ") + strerror(errno));
 290         }
 291 }
 292
 293 void InspIRCd::Start()
 294 {
 295         printf_c("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
 296         printf_c("(C) InspIRCd Development Team.\033[0m\n\n");
 297         printf_c("Developers:\t\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special, pippijn, peavey, Burlex\033[0m\n");
 298         printf_c("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
 299 }
 300
 301 void InspIRCd::Rehash(int status)
 302 {
 303         SI->WriteOpers("*** Rehashing config file %s due to SIGHUP",ServerConfig::CleanFilename(SI->ConfigFileName));
 304         SI->CloseLog();
 305         SI->OpenLog(SI->Config->argv, SI->Config->argc);
 306         SI->RehashUsersAndChans();
 307         FOREACH_MOD_I(SI, I_OnGarbageCollect, OnGarbageCollect());
 308         SI->Config->Read(false,NULL);
 309         SI->ResetMaxBans();
 310         SI->Res->Rehash();
 311         FOREACH_MOD_I(SI,I_OnRehash,OnRehash(NULL,""));
 312         SI->BuildISupport();
 313 }
 314
 315 void InspIRCd::ResetMaxBans()
 316 {
 317         for (chan_hash::const_iterator i = chanlist->begin(); i != chanlist->end(); i++)
 318                 i->second->ResetMaxBans();
 319 }
 320
 321
 322 /** Because hash_map doesnt free its buckets when we delete items (this is a 'feature')
 323  * we must occasionally rehash the hash (yes really).
 324  * We do this by copying the entries from the old hash to a new hash, causing all
 325  * empty buckets to be weeded out of the hash. We dont do this on a timer, as its
 326  * very expensive, so instead we do it when the user types /REHASH and expects a
 327  * short delay anyway.
 328  */
 329 void InspIRCd::RehashUsersAndChans()
 330 {
 331         user_hash* old_users = this->clientlist;
 332         chan_hash* old_chans = this->chanlist;
 333
 334         this->clientlist = new user_hash();
 335         this->chanlist = new chan_hash();
 336
 337         for (user_hash::const_iterator n = old_users->begin(); n != old_users->end(); n++)
 338                 this->clientlist->insert(*n);
 339
 340         delete old_users;
 341
 342         for (chan_hash::const_iterator n = old_chans->begin(); n != old_chans->end(); n++)
 343                 this->chanlist->insert(*n);
 344
 345         delete old_chans;
 346 }
 347
 348 void InspIRCd::CloseLog()
 349 {
 350         this->Logger->Close();
 351 }
 352
 353 void InspIRCd::SetSignals()
 354 {
 355 #ifndef WIN32
 356         signal(SIGALRM, SIG_IGN);
 357         signal(SIGHUP, InspIRCd::Rehash);
 358         signal(SIGPIPE, SIG_IGN);
 359         signal(SIGCHLD, SIG_IGN);
 360 #endif
 361         signal(SIGTERM, InspIRCd::Exit);
 362 }
 363
 364 void InspIRCd::QuickExit(int status)
 365 {
 366         exit(0);
 367 }
 368
 369 bool InspIRCd::DaemonSeed()
 370 {
 371 #ifdef WINDOWS
 372         printf_c("InspIRCd Process ID: \033[1;32m%lu\033[0m\n", GetCurrentProcessId());
 373         return true;
 374 #else
 375         signal(SIGTERM, InspIRCd::QuickExit);
 376
 377         int childpid;
 378         if ((childpid = fork ()) < 0)
 379                 return false;
 380         else if (childpid > 0)
 381         {
 382                 /* We wait here for the child process to kill us,
 383                  * so that the shell prompt doesnt come back over
 384                  * the output.
 385                  * Sending a kill with a signal of 0 just checks
 386                  * if the child pid is still around. If theyre not,
 387                  * they threw an error and we should give up.
 388                  */
 389                 while (kill(childpid, 0) != -1)
 390                         sleep(1);
 391                 exit(0);
 392         }
 393         setsid ();
 394         umask (007);
 395         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 396
 397         signal(SIGTERM, InspIRCd::Exit);
 398
 399         rlimit rl;
 400         if (getrlimit(RLIMIT_CORE, &rl) == -1)
 401         {
 402                 this->Log(DEFAULT,"Failed to getrlimit()!");
 403                 return false;
 404         }
 405         else
 406         {
 407                 rl.rlim_cur = rl.rlim_max;
 408                 if (setrlimit(RLIMIT_CORE, &rl) == -1)
 409                         this->Log(DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 410         }
 411
 412         return true;
 413 #endif
 414 }
 415
 416 void InspIRCd::WritePID(const std::string &filename)
 417 {
 418         std::string fname = (filename.empty() ? "inspircd.pid" : filename);
 419         if (*(fname.begin()) != '/')
 420         {
 421                 std::string::size_type pos;
 422                 std::string confpath = this->ConfigFileName;
 423                 if ((pos = confpath.rfind("/")) != std::string::npos)
 424                 {
 425                         /* Leaves us with just the path */
 426                         fname = confpath.substr(0, pos) + std::string("/") + fname;
 427                 }
 428         }
 429         std::ofstream outfile(fname.c_str());
 430         if (outfile.is_open())
 431         {
 432                 outfile << getpid();
 433                 outfile.close();
 434         }
 435         else
 436         {
 437                 printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
 438                 this->Log(DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
 439                 Exit(EXIT_STATUS_PID);
 440         }
 441 }
 442
 443 std::string InspIRCd::GetRevision()
 444 {
 445         return REVISION;
 446 }
 447
 448 InspIRCd::InspIRCd(int argc, char** argv)
 449         : ModCount(-1), GlobalCulls(this)
 450 {
 451         int found_ports = 0;
 452         FailedPortList pl;
 453         int do_version = 0, do_nofork = 0, do_debug = 0, do_nolog = 0, do_root = 0;    /* flag variables */
 454         char c = 0;
 455
 456         modules.resize(255);
 457         factory.resize(255);
 458         memset(&server, 0, sizeof(server));
 459         memset(&client, 0, sizeof(client));
 460
 461         this->unregistered_count = 0;
 462
 463         this->clientlist = new user_hash();
 464         this->chanlist = new chan_hash();
 465
 466         this->Config = new ServerConfig(this);
 467
 468         this->Config->argv = argv;
 469         this->Config->argc = argc;
 470
 471         chdir(Config->GetFullProgDir().c_str());
 472
 473         this->Config->opertypes.clear();
 474         this->Config->operclass.clear();
 475         this->SNO = new SnomaskManager(this);
 476         this->TIME = this->OLDTIME = this->startup_time = time(NULL);
 477         this->time_delta = 0;
 478         this->next_call = this->TIME + 3;
 479         srand(this->TIME);
 480
 481         *this->LogFileName = 0;
 482         strlcpy(this->ConfigFileName, CONFIG_FILE, MAXBUF);
 483
 484         struct option longopts[] =
 485         {
 486                 { "nofork",             no_argument,            &do_nofork,             1       },
 487                 { "logfile",    required_argument,      NULL,                   'f'     },
 488                 { "config",             required_argument,      NULL,                   'c'     },
 489                 { "debug",              no_argument,            &do_debug,              1       },
 490                 { "nolog",              no_argument,            &do_nolog,              1       },
 491                 { "runasroot",  no_argument,            &do_root,               1       },
 492                 { "version",    no_argument,            &do_version,    1       },
 493                 { 0, 0, 0, 0 }
 494         };
 495
 496         while ((c = getopt_long_only(argc, argv, ":f:", longopts, NULL)) != -1)
 497         {
 498                 switch (c)
 499                 {
 500                         case 'f':
 501                                 /* Log filename was set */
 502                                 strlcpy(LogFileName, optarg, MAXBUF);
 503                                 printf("LOG: Setting logfile to %s\n", LogFileName);
 504                         break;
 505                         case 'c':
 506                                 /* Config filename was set */
 507                                 strlcpy(ConfigFileName, optarg, MAXBUF);
 508                                 printf("CONFIG: Setting config file to %s\n", ConfigFileName);
 509                         break;
 510                         case 0:
 511                                 /* getopt_long_only() set an int variable, just keep going */
 512                         break;
 513                         default:
 514                                 /* Unknown parameter! DANGER, INTRUDER.... err.... yeah. */
 515                                 printf("Usage: %s [--nofork] [--nolog] [--debug] [--logfile <filename>] [--runasroot] [--version] [--config <config>]\n", argv[0]);
 516                                 Exit(EXIT_STATUS_ARGV);
 517                         break;
 518                 }
 519         }
 520
 521         if (do_version)
 522         {
 523                 printf("\n%s r%s\n", VERSION, REVISION);
 524                 Exit(EXIT_STATUS_NOERROR);
 525         }
 526
 527 #ifdef WIN32
 528
 529         // Handle forking
 530         if(!do_nofork && !owner_processid)
 531         {
 532                 DWORD ExitCode = WindowsForkStart(this);
 533                 if(ExitCode)
 534                         Exit(ExitCode);
 535         }
 536
 537         // Set up winsock
 538         WSADATA wsadata;
 539         WSAStartup(MAKEWORD(2,0), &wsadata);
 540
 541 #endif
 542         if (!ServerConfig::FileExists(this->ConfigFileName))
 543         {
 544                 printf("ERROR: Cannot open config file: %s\nExiting...\n", this->ConfigFileName);
 545                 this->Log(DEFAULT,"Unable to open config file %s", this->ConfigFileName);
 546                 Exit(EXIT_STATUS_CONFIG);
 547         }
 548
 549         this->Start();
 550
 551         /* Set the finished argument values */
 552         Config->nofork = do_nofork;
 553         Config->forcedebug = do_debug;
 554         Config->writelog = !do_nolog;
 555
 556         strlcpy(Config->MyExecutable,argv[0],MAXBUF);
 557
 558         this->OpenLog(argv, argc);
 559
 560         this->stats = new serverstats();
 561         this->Timers = new TimerManager(this);
 562         this->Parser = new CommandParser(this);
 563         this->XLines = new XLineManager(this);
 564         Config->ClearStack();
 565         Config->Read(true, NULL);
 566
 567         if (!do_root)
 568                 this->CheckRoot();
 569         else
 570         {
 571                 printf("* WARNING * WARNING * WARNING * WARNING * WARNING * \n\n");
 572                 printf("YOU ARE RUNNING INSPIRCD AS ROOT. THIS IS UNSUPPORTED\n");
 573                 printf("AND IF YOU ARE HACKED, CRACKED, SPINDLED OR MUTILATED\n");
 574                 printf("OR ANYTHING ELSE UNEXPECTED HAPPENS TO YOU OR YOUR\n");
 575                 printf("SERVER, THEN IT IS YOUR OWN FAULT. IF YOU DID NOT MEAN\n");
 576                 printf("TO START INSPIRCD AS ROOT, HIT CTRL+C NOW AND RESTART\n");
 577                 printf("THE PROGRAM AS A NORMAL USER. YOU HAVE BEEN WARNED!\n");
 578                 printf("\nInspIRCd starting in 20 seconds, ctrl+c to abort...\n");
 579                 sleep(20);
 580         }
 581
 582         this->SetSignals();
 583
 584         if (!Config->nofork)
 585         {
 586                 if (!this->DaemonSeed())
 587                 {
 588                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 589                         Log(DEFAULT,"ERROR: could not go into daemon mode. Shutting down.");
 590                         Exit(EXIT_STATUS_FORK);
 591                 }
 592         }
 593
 594
 595         /* Because of limitations in kqueue on freebsd, we must fork BEFORE we
 596          * initialize the socket engine.
 597          */
 598         SocketEngineFactory* SEF = new SocketEngineFactory();
 599         SE = SEF->Create(this);
 600         delete SEF;
 601
 602         this->Modes = new ModeParser(this);
 603         this->AddServerName(Config->ServerName);
 604         CheckDie();
 605         int bounditems = BindPorts(true, found_ports, pl);
 606
 607         for(int t = 0; t < 255; t++)
 608                 Config->global_implementation[t] = 0;
 609
 610         memset(&Config->implement_lists,0,sizeof(Config->implement_lists));
 611
 612         printf("\n");
 613
 614         this->Res = new DNS(this);
 615
 616         this->LoadAllModules();
 617         /* Just in case no modules were loaded - fix for bug #101 */
 618         this->BuildISupport();
 619         InitializeDisabledCommands(Config->DisabledCommands, this);
 620
 621         if ((Config->ports.size() == 0) && (found_ports > 0))
 622         {
 623                 printf("\nERROR: I couldn't bind any ports! Are you sure you didn't start InspIRCd twice?\n");
 624                 Log(DEFAULT,"ERROR: I couldn't bind any ports! Are you sure you didn't start InspIRCd twice?");
 625                 Exit(EXIT_STATUS_BIND);
 626         }
 627
 628         if (Config->ports.size() != (unsigned int)found_ports)
 629         {
 630                 printf("\nWARNING: Not all your client ports could be bound --\nstarting anyway with %d of %d client ports bound.\n\n", bounditems, found_ports);
 631                 printf("The following port(s) failed to bind:\n");
 632                 int j = 1;
 633                 for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 634                 {
 635                         printf("%d.\tIP: %s\tPort: %lu\n", j, i->first.empty() ? "<all>" : i->first.c_str(), (unsigned long)i->second);
 636                 }
 637         }
 638 #ifndef WINDOWS
 639         if (!Config->nofork)
 640         {
 641                 if (kill(getppid(), SIGTERM) == -1)
 642                 {
 643                         printf("Error killing parent process: %s\n",strerror(errno));
 644                         Log(DEFAULT,"Error killing parent process: %s",strerror(errno));
 645                 }
 646         }
 647
 648         if (isatty(0) && isatty(1) && isatty(2))
 649         {
 650                 /* We didn't start from a TTY, we must have started from a background process -
 651                  * e.g. we are restarting, or being launched by cron. Dont kill parent, and dont
 652                  * close stdin/stdout
 653                  */
 654                 if (!do_nofork)
 655                 {
 656                         fclose(stdin);
 657                         fclose(stderr);
 658                         fclose(stdout);
 659                 }
 660                 else
 661                 {
 662                         Log(DEFAULT,"Keeping pseudo-tty open as we are running in the foreground.");
 663                 }
 664         }
 665 #else
 666         InitIPC();
 667         if(!Config->nofork)
 668         {
 669                 WindowsForkKillOwner(this);
 670                 FreeConsole();
 671         }
 672 #endif
 673         printf("\nInspIRCd is now running!\n");
 674         Log(DEFAULT,"Startup complete.");
 675
 676         this->WritePID(Config->PID);
 677 }
 678
 679 std::string InspIRCd::GetVersionString()
 680 {
 681         char versiondata[MAXBUF];
 682         char dnsengine[] = "singlethread-object";
 683
 684         if (*Config->CustomVersion)
 685         {
 686                 snprintf(versiondata,MAXBUF,"%s %s :%s",VERSION,Config->ServerName,Config->CustomVersion);
 687         }
 688         else
 689         {
 690                 snprintf(versiondata,MAXBUF,"%s %s :%s [FLAGS=%s,%s,%s]",VERSION,Config->ServerName,SYSTEM,REVISION,SE->GetName().c_str(),dnsengine);
 691         }
 692         return versiondata;
 693 }
 694
 695 char* InspIRCd::ModuleError()
 696 {
 697         return MODERR;
 698 }
 699
 700 void InspIRCd::EraseFactory(int j)
 701 {
 702         int v = 0;
 703         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
 704         {
 705                 if (v == j)
 706                 {
 707                         delete *t;
 708                         factory.erase(t);
 709                         factory.push_back(NULL);
 710                         return;
 711                 }
 712                 v++;
 713         }
 714 }
 715
 716 void InspIRCd::EraseModule(int j)
 717 {
 718         int v1 = 0;
 719         for (ModuleList::iterator m = modules.begin(); m!= modules.end(); m++)
 720         {
 721                 if (v1 == j)
 722                 {
 723                         DELETE(*m);
 724                         modules.erase(m);
 725                         modules.push_back(NULL);
 726                         break;
 727                 }
 728                 v1++;
 729         }
 730         int v2 = 0;
 731         for (std::vector<std::string>::iterator v = Config->module_names.begin(); v != Config->module_names.end(); v++)
 732         {
 733                 if (v2 == j)
 734                 {
 735                         Config->module_names.erase(v);
 736                         break;
 737                 }
 738                 v2++;
 739         }
 740
 741 }
 742
 743 void InspIRCd::MoveTo(std::string modulename,int slot)
 744 {
 745         unsigned int v2 = 256;
 746         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 747         {
 748                 if (Config->module_names[v] == modulename)
 749                 {
 750                         // found an instance, swap it with the item at the end
 751                         v2 = v;
 752                         break;
 753                 }
 754         }
 755         if ((v2 != (unsigned int)slot) && (v2 < 256))
 756         {
 757                 // Swap the module names over
 758                 Config->module_names[v2] = Config->module_names[slot];
 759                 Config->module_names[slot] = modulename;
 760                 // now swap the module factories
 761                 ircd_module* temp = factory[v2];
 762                 factory[v2] = factory[slot];
 763                 factory[slot] = temp;
 764                 // now swap the module objects
 765                 Module* temp_module = modules[v2];
 766                 modules[v2] = modules[slot];
 767                 modules[slot] = temp_module;
 768                 // now swap the implement lists (we dont
 769                 // need to swap the global or recount it)
 770                 for (int n = 0; n < 255; n++)
 771                 {
 772                         char x = Config->implement_lists[v2][n];
 773                         Config->implement_lists[v2][n] = Config->implement_lists[slot][n];
 774                         Config->implement_lists[slot][n] = x;
 775                 }
 776         }
 777 }
 778
 779 void InspIRCd::MoveAfter(std::string modulename, std::string after)
 780 {
 781         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 782         {
 783                 if (Config->module_names[v] == after)
 784                 {
 785                         MoveTo(modulename, v);
 786                         return;
 787                 }
 788         }
 789 }
 790
 791 void InspIRCd::MoveBefore(std::string modulename, std::string before)
 792 {
 793         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 794         {
 795                 if (Config->module_names[v] == before)
 796                 {
 797                         if (v > 0)
 798                         {
 799                                 MoveTo(modulename, v-1);
 800                         }
 801                         else
 802                         {
 803                                 MoveTo(modulename, v);
 804                         }
 805                         return;
 806                 }
 807         }
 808 }
 809
 810 void InspIRCd::MoveToFirst(std::string modulename)
 811 {
 812         MoveTo(modulename,0);
 813 }
 814
 815 void InspIRCd::MoveToLast(std::string modulename)
 816 {
 817         MoveTo(modulename,this->GetModuleCount());
 818 }
 819
 820 void InspIRCd::BuildISupport()
 821 {
 822         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
 823         std::stringstream v;
 824         v << "WALLCHOPS WALLVOICES MODES=" << MAXMODES-1 << " CHANTYPES=# PREFIX=" << this->Modes->BuildPrefixes() << " MAP MAXCHANNELS=" << Config->MaxChans << " MAXBANS=60 VBANLIST NICKLEN=" << NICKMAX-1;
 825         v << " CASEMAPPING=rfc1459 STATUSMSG=@%+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=" << Config->MaxTargets << " AWAYLEN=";
 826         v << MAXAWAY << " CHANMODES=" << this->Modes->ChanModes() << " FNC NETWORK=" << Config->Network << " MAXPARA=32 ELIST=MU";
 827         Config->data005 = v.str();
 828         FOREACH_MOD_I(this,I_On005Numeric,On005Numeric(Config->data005));
 829         Config->Update005();
 830 }
 831
 832 bool InspIRCd::UnloadModule(const char* filename)
 833 {
 834         std::string filename_str = filename;
 835         for (unsigned int j = 0; j != Config->module_names.size(); j++)
 836         {
 837                 if (Config->module_names[j] == filename_str)
 838                 {
 839                         if (modules[j]->GetVersion().Flags & VF_STATIC)
 840                         {
 841                                 this->Log(DEFAULT,"Failed to unload STATIC module %s",filename);
 842                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
 843                                 return false;
 844                         }
 845                         std::pair<int,std::string> intercount = GetInterfaceInstanceCount(modules[j]);
 846                         if (intercount.first > 0)
 847                         {
 848                                 this->Log(DEFAULT,"Failed to unload module %s, being used by %d other(s) via interface '%s'",filename, intercount.first, intercount.second.c_str());
 849                                 snprintf(MODERR,MAXBUF,"Module not unloadable (Still in use by %d other module%s which %s using its interface '%s') -- unload dependent modules first!",
 850                                                 intercount.first,
 851                                                 intercount.first > 1 ? "s" : "",
 852                                                 intercount.first > 1 ? "are" : "is",
 853                                                 intercount.second.c_str());
 854                                 return false;
 855                         }
 856                         /* Give the module a chance to tidy out all its metadata */
 857                         for (chan_hash::iterator c = this->chanlist->begin(); c != this->chanlist->end(); c++)
 858                         {
 859                                 modules[j]->OnCleanup(TYPE_CHANNEL,c->second);
 860                         }
 861                         for (user_hash::iterator u = this->clientlist->begin(); u != this->clientlist->end(); u++)
 862                         {
 863                                 modules[j]->OnCleanup(TYPE_USER,u->second);
 864                         }
 865
 866                         /* Tidy up any dangling resolvers */
 867                         this->Res->CleanResolvers(modules[j]);
 868
 869                         FOREACH_MOD_I(this,I_OnUnloadModule,OnUnloadModule(modules[j],Config->module_names[j]));
 870
 871                         for(int t = 0; t < 255; t++)
 872                         {
 873                                 Config->global_implementation[t] -= Config->implement_lists[j][t];
 874                         }
 875
 876                         /* We have to renumber implement_lists after unload because the module numbers change!
 877                          */
 878                         for(int j2 = j; j2 < 254; j2++)
 879                         {
 880                                 for(int t = 0; t < 255; t++)
 881                                 {
 882                                         Config->implement_lists[j2][t] = Config->implement_lists[j2+1][t];
 883                                 }
 884                         }
 885
 886                         // found the module
 887                         Parser->RemoveCommands(filename);
 888                         this->EraseModule(j);
 889                         this->EraseFactory(j);
 890                         this->Log(DEFAULT,"Module %s unloaded",filename);
 891                         this->ModCount--;
 892                         BuildISupport();
 893                         return true;
 894                 }
 895         }
 896         this->Log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
 897         snprintf(MODERR,MAXBUF,"Module not loaded");
 898         return false;
 899 }
 900
 901 bool InspIRCd::LoadModule(const char* filename)
 902 {
 903         /* Do we have a glob pattern in the filename?
 904          * The user wants to load multiple modules which
 905          * match the pattern.
 906          */
 907         if (strchr(filename,'*') || (strchr(filename,'?')))
 908         {
 909                 int n_match = 0;
 910                 DIR* library = opendir(Config->ModPath);
 911                 if (library)
 912                 {
 913                         /* Try and locate and load all modules matching the pattern */
 914                         dirent* entry = NULL;
 915                         while ((entry = readdir(library)))
 916                         {
 917                                 if (this->MatchText(entry->d_name, filename))
 918                                 {
 919                                         if (!this->LoadModule(entry->d_name))
 920                                                 n_match++;
 921                                 }
 922                         }
 923                         closedir(library);
 924                 }
 925                 /* Loadmodule will now return false if any one of the modules failed
 926                  * to load (but wont abort when it encounters a bad one) and when 1 or
 927                  * more modules were actually loaded.
 928                  */
 929                 return (n_match > 0);
 930         }
 931
 932         char modfile[MAXBUF];
 933         snprintf(modfile,MAXBUF,"%s/%s",Config->ModPath,filename);
 934         std::string filename_str = filename;
 935
 936         if (!ServerConfig::DirValid(modfile))
 937         {
 938                 this->Log(DEFAULT,"Module %s is not within the modules directory.",modfile);
 939                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
 940                 return false;
 941         }
 942         if (ServerConfig::FileExists(modfile))
 943         {
 944
 945                 for (unsigned int j = 0; j < Config->module_names.size(); j++)
 946                 {
 947                         if (Config->module_names[j] == filename_str)
 948                         {
 949                                 this->Log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
 950                                 snprintf(MODERR,MAXBUF,"Module already loaded");
 951                                 return false;
 952                         }
 953                 }
 954                 try
 955                 {
 956                         ircd_module* a = new ircd_module(this, modfile);
 957                         factory[this->ModCount+1] = a;
 958                         if (factory[this->ModCount+1]->LastError())
 959                         {
 960                                 this->Log(DEFAULT,"Unable to load %s: %s",modfile,factory[this->ModCount+1]->LastError());
 961                                 snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[this->ModCount+1]->LastError());
 962                                 return false;
 963                         }
 964                         if ((long)factory[this->ModCount+1]->factory != -1)
 965                         {
 966                                 Module* m = factory[this->ModCount+1]->factory->CreateModule(this);
 967
 968                                 Version v = m->GetVersion();
 969
 970                                 if (v.API != API_VERSION)
 971                                 {
 972                                         delete m;
 973                                         delete a;
 974                                         this->Log(DEFAULT,"Unable to load %s: Incorrect module API version: %d (our version: %d)",modfile,v.API,API_VERSION);
 975                                         snprintf(MODERR,MAXBUF,"Loader/Linker error: Incorrect module API version: %d (our version: %d)",v.API,API_VERSION);
 976                                         return false;
 977                                 }
 978                                 else
 979                                 {
 980                                         this->Log(DEFAULT,"New module introduced: %s (API version %d, Module version %d.%d.%d.%d)%s", filename, v.API, v.Major, v.Minor, v.Revision, v.Build, (!(v.Flags & VF_VENDOR) ? " [3rd Party]" : " [Vendor]"));
 981                                 }
 982
 983                                 modules[this->ModCount+1] = m;
 984                                 /* save the module and the module's classfactory, if
 985                                  * this isnt done, random crashes can occur :/ */
 986                                 Config->module_names.push_back(filename);
 987
 988                                 char* x = &Config->implement_lists[this->ModCount+1][0];
 989                                 for(int t = 0; t < 255; t++)
 990                                         x[t] = 0;
 991
 992                                 modules[this->ModCount+1]->Implements(x);
 993
 994                                 for(int t = 0; t < 255; t++)
 995                                         Config->global_implementation[t] += Config->implement_lists[this->ModCount+1][t];
 996                         }
 997                         else
 998                         {
 999                                 this->Log(DEFAULT,"Unable to load %s",modfile);
1000                                 snprintf(MODERR,MAXBUF,"Factory function failed: Probably missing init_module() entrypoint.");
1001                                 return false;
1002                         }
1003                 }
1004                 catch (CoreException& modexcept)
1005                 {
1006                         this->Log(DEFAULT,"Unable to load %s: %s",modfile,modexcept.GetReason());
1007                         snprintf(MODERR,MAXBUF,"Factory function of %s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1008                         return false;
1009                 }
1010         }
1011         else
1012         {
1013                 this->Log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
1014                 snprintf(MODERR,MAXBUF,"Module file could not be found");
1015                 return false;
1016         }
1017         this->ModCount++;
1018         FOREACH_MOD_I(this,I_OnLoadModule,OnLoadModule(modules[this->ModCount],filename_str));
1019         // now work out which modules, if any, want to move to the back of the queue,
1020         // and if they do, move them there.
1021         std::vector<std::string> put_to_back;
1022         std::vector<std::string> put_to_front;
1023         std::map<std::string,std::string> put_before;
1024         std::map<std::string,std::string> put_after;
1025         for (unsigned int j = 0; j < Config->module_names.size(); j++)
1026         {
1027                 if (modules[j]->Prioritize() == PRIORITY_LAST)
1028                         put_to_back.push_back(Config->module_names[j]);
1029                 else if (modules[j]->Prioritize() == PRIORITY_FIRST)
1030                         put_to_front.push_back(Config->module_names[j]);
1031                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_BEFORE)
1032                         put_before[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
1033                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_AFTER)
1034                         put_after[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
1035         }
1036         for (unsigned int j = 0; j < put_to_back.size(); j++)
1037                 MoveToLast(put_to_back[j]);
1038         for (unsigned int j = 0; j < put_to_front.size(); j++)
1039                 MoveToFirst(put_to_front[j]);
1040         for (std::map<std::string,std::string>::iterator j = put_before.begin(); j != put_before.end(); j++)
1041                 MoveBefore(j->first,j->second);
1042         for (std::map<std::string,std::string>::iterator j = put_after.begin(); j != put_after.end(); j++)
1043                 MoveAfter(j->first,j->second);
1044         BuildISupport();
1045         return true;
1046 }
1047
1048 void InspIRCd::DoOneIteration(bool process_module_sockets)
1049 {
1050 #ifndef WIN32
1051         static rusage ru;
1052 #else
1053         static time_t uptime;
1054         static struct tm * stime;
1055         static char window_title[100];
1056 #endif
1057
1058         /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
1059          * Once per loop iteration is pleanty.
1060          */
1061         OLDTIME = TIME;
1062         TIME = time(NULL);
1063
1064         /* Run background module timers every few seconds
1065          * (the docs say modules shouldnt rely on accurate
1066          * timing using this event, so we dont have to
1067          * time this exactly).
1068          */
1069         if (TIME != OLDTIME)
1070         {
1071                 if (TIME < OLDTIME)
1072                         WriteOpers("*** \002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %d secs.",abs(OLDTIME-TIME));
1073                 if ((TIME % 3600) == 0)
1074                 {
1075                         this->RehashUsersAndChans();
1076                         FOREACH_MOD_I(this, I_OnGarbageCollect, OnGarbageCollect());
1077                 }
1078                 Timers->TickTimers(TIME);
1079                 this->DoBackgroundUserStuff(TIME);
1080
1081                 if ((TIME % 5) == 0)
1082                 {
1083                         XLines->expire_lines();
1084                         FOREACH_MOD_I(this,I_OnBackgroundTimer,OnBackgroundTimer(TIME));
1085                         Timers->TickMissedTimers(TIME);
1086                 }
1087 #ifndef WIN32
1088                 /* Same change as in cmd_stats.cpp, use RUSAGE_SELF rather than '0' -- Om */
1089                 if (!getrusage(RUSAGE_SELF, &ru))
1090                 {
1091                         gettimeofday(&this->stats->LastSampled, NULL);
1092                         this->stats->LastCPU = ru.ru_utime;
1093                 }
1094 #else
1095                 CheckIPC(this);
1096
1097                 if(Config->nofork)
1098                 {
1099                         uptime = Time() - startup_time;
1100                         stime = gmtime(&uptime);
1101                         snprintf(window_title, 100, "InspIRCd - %u clients, %u accepted connections - Up %u days, %.2u:%.2u:%.2u",
1102                                 LocalUserCount(), stats->statsAccept, stime->tm_yday, stime->tm_hour, stime->tm_min, stime->tm_sec);
1103                         SetConsoleTitle(window_title);
1104                 }
1105 #endif
1106         }
1107
1108         /* Call the socket engine to wait on the active
1109          * file descriptors. The socket engine has everything's
1110          * descriptors in its list... dns, modules, users,
1111          * servers... so its nice and easy, just one call.
1112          * This will cause any read or write events to be
1113          * dispatched to their handlers.
1114          */
1115         SE->DispatchEvents();
1116
1117         /* if any users was quit, take them out */
1118         GlobalCulls.Apply();
1119
1120         /* If any inspsockets closed, remove them */
1121         for (std::map<InspSocket*,InspSocket*>::iterator x = SocketCull.begin(); x != SocketCull.end(); ++x)
1122         {
1123                 SE->DelFd(x->second);
1124                 x->second->Close();
1125                 delete x->second;
1126         }
1127         SocketCull.clear();
1128 }
1129
1130 int InspIRCd::Run()
1131 {
1132         while (true)
1133         {
1134                 DoOneIteration(true);
1135         }
1136         /* This is never reached -- we hope! */
1137         return 0;
1138 }
1139
1140 /**********************************************************************************/
1141
1142 /**
1143  * An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*.
1144  */
1145
1146 int main(int argc, char** argv)
1147 {
1148         SI = new InspIRCd(argc, argv);
1149         SI->Run();
1150         delete SI;
1151         return 0;
1152 }
1153
1154 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
1155  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
1156  * registration timeout maximum seconds)
1157  */
1158 bool InspIRCd::AllModulesReportReady(userrec* user)
1159 {
1160         if (!Config->global_implementation[I_OnCheckReady])
1161                 return true;
1162
1163         for (int i = 0; i <= this->GetModuleCount(); i++)
1164         {
1165                 if (Config->implement_lists[i][I_OnCheckReady])
1166                 {
1167                         int res = modules[i]->OnCheckReady(user);
1168                         if (!res)
1169                                 return false;
1170                 }
1171         }
1172         return true;
1173 }
1174
1175 int InspIRCd::GetModuleCount()
1176 {
1177         return this->ModCount;
1178 }
1179
1180 time_t InspIRCd::Time(bool delta)
1181 {
1182         if (delta)
1183                 return TIME + time_delta;
1184         return TIME;
1185 }
1186
1187 int InspIRCd::SetTimeDelta(int delta)
1188 {
1189         int old = time_delta;
1190         time_delta = delta;
1191         this->Log(DEBUG, "Time delta set to %d (was %d)", time_delta, old);
1192         return old;
1193 }
1194
1195 void InspIRCd::AddLocalClone(userrec* user)
1196 {
1197         clonemap::iterator x = local_clones.find(user->GetIPString());
1198         if (x != local_clones.end())
1199                 x->second++;
1200         else
1201                 local_clones[user->GetIPString()] = 1;
1202 }
1203
1204 void InspIRCd::AddGlobalClone(userrec* user)
1205 {
1206         clonemap::iterator y = global_clones.find(user->GetIPString());
1207         if (y != global_clones.end())
1208                 y->second++;
1209         else
1210                 global_clones[user->GetIPString()] = 1;
1211 }
1212
1213 int InspIRCd::GetTimeDelta()
1214 {
1215         return time_delta;
1216 }
1217
1218 bool FileLogger::Readable()
1219 {
1220         return false;
1221 }
1222
1223 void FileLogger::HandleEvent(EventType et, int errornum)
1224 {
1225         this->WriteLogLine("");
1226         if (log)
1227                 ServerInstance->SE->DelFd(this);
1228 }
1229
1230 void FileLogger::WriteLogLine(const std::string &line)
1231 {
1232         if (line.length())
1233                 buffer.append(line);
1234
1235         if (log)
1236         {
1237                 int written = fprintf(log,"%s",buffer.c_str());
1238 #ifdef WINDOWS
1239                 buffer.clear();
1240 #else
1241                 if ((written >= 0) && (written < (int)buffer.length()))
1242                 {
1243                         buffer.erase(0, buffer.length());
1244                         ServerInstance->SE->AddFd(this);
1245                 }
1246                 else if (written == -1)
1247                 {
1248                         if (errno == EAGAIN)
1249                                 ServerInstance->SE->AddFd(this);
1250                 }
1251                 else
1252                 {
1253                         /* Wrote the whole buffer, and no need for write callback */
1254                         buffer.clear();
1255                 }
1256 #endif
1257                 if (writeops++ % 20)
1258                 {
1259                         fflush(log);
1260                 }
1261         }
1262 }
1263
1264 void FileLogger::Close()
1265 {
1266         if (log)
1267         {
1268                 /* Burlex: Windows assumes nonblocking on FILE* pointers anyway, and also "file" fd's aren't the same
1269                  * as socket fd's. */
1270 #ifndef WIN32
1271                 int flags = fcntl(fileno(log), F_GETFL, 0);
1272                 fcntl(fileno(log), F_SETFL, flags ^ O_NONBLOCK);
1273 #endif
1274                 if (buffer.size())
1275                         fprintf(log,"%s",buffer.c_str());
1276
1277 #ifndef WINDOWS
1278                 ServerInstance->SE->DelFd(this);
1279 #endif
1280
1281                 fflush(log);
1282                 fclose(log);
1283         }
1284
1285         buffer.clear();
1286 }
1287
1288 FileLogger::FileLogger(InspIRCd* Instance, FILE* logfile) : ServerInstance(Instance), log(logfile), writeops(0)
1289 {
1290         if (log)
1291         {
1292                 irc::sockets::NonBlocking(fileno(log));
1293                 this->SetFd(fileno(log));
1294                 buffer.clear();
1295         }
1296 }
1297
1298 FileLogger::~FileLogger()
1299 {
1300         this->Close();
1301 }
1302