/* +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * InspIRCd: (C) 2002-2007 InspIRCd Development Team * See: http://www.inspircd.org/wiki/index.php/Credits * * This program is free but copyrighted software; see * the file COPYING for details. * * --------------------------------------------------- */ #include "inspircd.h" #include "configreader.h" #include #ifndef WIN32 #include #include #include #include #include /* Some systems don't define RUSAGE_SELF. This should fix them. */ #ifndef RUSAGE_SELF #define RUSAGE_SELF 0 #endif #endif #include #include #include "modules.h" #include "mode.h" #include "xline.h" #include "socketengine.h" #include "inspircd_se_config.h" #include "socket.h" #include "typedefs.h" #include "command_parse.h" #include "exitcodes.h" #include "caller.h" #ifdef WIN32 /* This MUST remain static and delcared outside the class, so that WriteProcessMemory can reference it properly */ static DWORD owner_processid = 0; DWORD WindowsForkStart(InspIRCd * Instance) { /* Windows implementation of fork() :P */ char module[MAX_PATH]; if(!GetModuleFileName(NULL, module, MAX_PATH)) { printf("GetModuleFileName() failed.\n"); return false; } STARTUPINFO startupinfo; PROCESS_INFORMATION procinfo; ZeroMemory(&startupinfo, sizeof(STARTUPINFO)); ZeroMemory(&procinfo, sizeof(PROCESS_INFORMATION)); // Fill in the startup info struct GetStartupInfo(&startupinfo); /* Default creation flags create the processes suspended */ DWORD startupflags = CREATE_SUSPENDED; /* On windows 2003/XP and above, we can use the value * CREATE_PRESERVE_CODE_AUTHZ_LEVEL which gives more access * to the process which we may require on these operating systems. */ OSVERSIONINFO vi; vi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); GetVersionEx(&vi); if ((vi.dwMajorVersion >= 5) && (vi.dwMinorVersion > 0)) startupflags |= CREATE_PRESERVE_CODE_AUTHZ_LEVEL; // Launch our "forked" process. BOOL bSuccess = CreateProcess ( module, // Module (exe) filename strdup(GetCommandLine()), // Command line (exe plus parameters from the OS) // NOTE: We cannot return the direct value of the // GetCommandLine function here, as the pointer is // passed straight to the child process, and will be // invalid once we exit as it goes out of context. // strdup() seems ok, though. 0, // PROCESS_SECURITY_ATTRIBUTES 0, // THREAD_SECURITY_ATTRIBUTES TRUE, // We went to inherit handles. startupflags, // Allow us full access to the process and suspend it. 0, // ENVIRONMENT 0, // CURRENT_DIRECTORY &startupinfo, // startup info &procinfo); // process info if(!bSuccess) { printf("CreateProcess() error: %s\n", dlerror()); return false; } // Set the owner process id in the target process. SIZE_T written = 0; DWORD pid = GetCurrentProcessId(); if(!WriteProcessMemory(procinfo.hProcess, &owner_processid, &pid, sizeof(DWORD), &written) || written != sizeof(DWORD)) { printf("WriteProcessMemory() failed: %s\n", dlerror()); return false; } // Resume the other thread (let it start) ResumeThread(procinfo.hThread); // 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. WaitForSingleObject(procinfo.hProcess, INFINITE); // If we hit this it means startup failed, default to 14 if this fails. DWORD ExitCode = 14; GetExitCodeProcess(procinfo.hProcess, &ExitCode); CloseHandle(procinfo.hThread); CloseHandle(procinfo.hProcess); return ExitCode; } void WindowsForkKillOwner(InspIRCd * Instance) { HANDLE hProcess = OpenProcess(PROCESS_TERMINATE, FALSE, owner_processid); if(!hProcess || !owner_processid) { printf("Could not open process id %u: %s.\n", owner_processid, dlerror()); Instance->Exit(14); } // die die die if(!TerminateProcess(hProcess, 0)) { printf("Could not TerminateProcess(): %s\n", dlerror()); Instance->Exit(14); } CloseHandle(hProcess); } #endif using irc::sockets::NonBlocking; using irc::sockets::Blocking; using irc::sockets::insp_ntoa; using irc::sockets::insp_inaddr; using irc::sockets::insp_sockaddr; InspIRCd* SI = NULL; /* Burlex: Moved from exitcodes.h -- due to duplicate symbols */ const char* ExitCodes[] = { "No error", /* 0 */ "DIE command", /* 1 */ "execv() failed", /* 2 */ "Internal error", /* 3 */ "Config file error", /* 4 */ "Logfile error", /* 5 */ "POSIX fork failed", /* 6 */ "Bad commandline parameters", /* 7 */ "No ports could be bound", /* 8 */ "Can't write PID file", /* 9 */ "SocketEngine could not initialize", /* 10 */ "Refusing to start up as root", /* 11 */ "Found a tag!", /* 12 */ "Couldn't load module on startup", /* 13 */ "Could not create windows forked process", /* 14 */ "Received SIGTERM", /* 15 */ }; void InspIRCd::Exit(int status) { #ifdef WINDOWS CloseIPC(); #endif if (SI) { SI->SendError("Exiting with status " + ConvToStr(status) + " (" + std::string(ExitCodes[status]) + ")"); SI->Cleanup(); } exit (status); } void InspIRCd::Cleanup() { std::vector mymodnames; int MyModCount = this->GetModuleCount(); for (unsigned int i = 0; i < Config->ports.size(); i++) { /* This calls the constructor and closes the listening socket */ delete Config->ports[i]; } Config->ports.clear(); /* Close all client sockets, or the new process inherits them */ for (std::vector::const_iterator i = this->local_users.begin(); i != this->local_users.end(); i++) { (*i)->SetWriteError("Server shutdown"); (*i)->CloseSocket(); } /* We do this more than once, so that any service providers get a * chance to be unhooked by the modules using them, but then get * a chance to be removed themsleves. */ for (int tries = 0; tries < 3; tries++) { MyModCount = this->GetModuleCount(); mymodnames.clear(); /* Unload all modules, so they get a chance to clean up their listeners */ for (int j = 0; j <= MyModCount; j++) mymodnames.push_back(Config->module_names[j]); for (int k = 0; k <= MyModCount; k++) this->UnloadModule(mymodnames[k].c_str()); } /* Close logging */ this->Logger->Close(); /* Cleanup Server Names */ for(servernamelist::iterator itr = servernames.begin(); itr != servernames.end(); ++itr) delete (*itr); #ifdef WINDOWS /* WSACleanup */ WSACleanup(); #endif } void InspIRCd::Restart(const std::string &reason) { /* SendError flushes each client's queue, * regardless of writeability state */ this->SendError(reason); this->Cleanup(); /* Figure out our filename (if theyve renamed it, we're boned) */ std::string me; #ifdef WINDOWS char module[MAX_PATH]; if (GetModuleFileName(NULL, module, MAX_PATH)) me = module; #else me = Config->MyDir + "/inspircd"; #endif if (execv(me.c_str(), Config->argv) == -1) { /* Will raise a SIGABRT if not trapped */ throw CoreException(std::string("Failed to execv()! error: ") + strerror(errno)); } } void InspIRCd::ResetMaxBans() { for (chan_hash::const_iterator i = chanlist->begin(); i != chanlist->end(); i++) i->second->ResetMaxBans(); } /** Because hash_map doesnt free its buckets when we delete items (this is a 'feature') * we must occasionally rehash the hash (yes really). * We do this by copying the entries from the old hash to a new hash, causing all * empty buckets to be weeded out of the hash. We dont do this on a timer, as its * very expensive, so instead we do it when the user types /REHASH and expects a * short delay anyway. */ void InspIRCd::RehashUsersAndChans() { user_hash* old_users = this->clientlist; chan_hash* old_chans = this->chanlist; this->clientlist = new user_hash(); this->chanlist = new chan_hash(); for (user_hash::const_iterator n = old_users->begin(); n != old_users->end(); n++) this->clientlist->insert(*n); delete old_users; for (chan_hash::const_iterator n = old_chans->begin(); n != old_chans->end(); n++) this->chanlist->insert(*n); delete old_chans; } void InspIRCd::CloseLog() { this->Logger->Close(); } void InspIRCd::SetSignals() { #ifndef WIN32 signal(SIGALRM, SIG_IGN); signal(SIGHUP, InspIRCd::Rehash); signal(SIGPIPE, SIG_IGN); signal(SIGCHLD, SIG_IGN); #endif signal(SIGTERM, InspIRCd::Exit); } void InspIRCd::QuickExit(int status) { exit(0); } bool InspIRCd::DaemonSeed() { #ifdef WINDOWS printf_c("InspIRCd Process ID: \033[1;32m%lu\033[0m\n", GetCurrentProcessId()); return true; #else signal(SIGTERM, InspIRCd::QuickExit); int childpid; if ((childpid = fork ()) < 0) return false; else if (childpid > 0) { /* We wait here for the child process to kill us, * so that the shell prompt doesnt come back over * the output. * Sending a kill with a signal of 0 just checks * if the child pid is still around. If theyre not, * they threw an error and we should give up. */ while (kill(childpid, 0) != -1) sleep(1); exit(0); } setsid (); umask (007); printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid()); signal(SIGTERM, InspIRCd::Exit); rlimit rl; if (getrlimit(RLIMIT_CORE, &rl) == -1) { this->Log(DEFAULT,"Failed to getrlimit()!"); return false; } else { rl.rlim_cur = rl.rlim_max; if (setrlimit(RLIMIT_CORE, &rl) == -1) this->Log(DEFAULT,"setrlimit() failed, cannot increase coredump size."); } return true; #endif } void InspIRCd::WritePID(const std::string &filename) { std::string fname = (filename.empty() ? "inspircd.pid" : filename); if (*(fname.begin()) != '/') { std::string::size_type pos; std::string confpath = this->ConfigFileName; if ((pos = confpath.rfind("/")) != std::string::npos) { /* Leaves us with just the path */ fname = confpath.substr(0, pos) + std::string("/") + fname; } } std::ofstream outfile(fname.c_str()); if (outfile.is_open()) { outfile << getpid(); outfile.close(); } else { printf("Failed to write PID-file '%s', exiting.\n",fname.c_str()); this->Log(DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str()); Exit(EXIT_STATUS_PID); } } InspIRCd::InspIRCd(int argc, char** argv) : ModCount(0), GlobalCulls(this), HandleIsNick(this), HandleIsIdent(this), HandleFindDescriptor(this), IsNick(&HandleIsNick), IsIdent(&HandleIsIdent), FindDescriptor(&HandleFindDescriptor) { int found_ports = 0; FailedPortList pl; int do_version = 0, do_nofork = 0, do_debug = 0, do_nolog = 0, do_root = 0; /* flag variables */ char c = 0; modules.resize(255); factory.resize(255); memset(&server, 0, sizeof(server)); memset(&client, 0, sizeof(client)); this->unregistered_count = 0; this->clientlist = new user_hash(); this->chanlist = new chan_hash(); this->Config = new ServerConfig(this); this->Config->argv = argv; this->Config->argc = argc; chdir(Config->GetFullProgDir().c_str()); this->Config->opertypes.clear(); this->Config->operclass.clear(); this->SNO = new SnomaskManager(this); this->TIME = this->OLDTIME = this->startup_time = time(NULL); this->time_delta = 0; this->next_call = this->TIME + 3; srand(this->TIME); *this->LogFileName = 0; strlcpy(this->ConfigFileName, CONFIG_FILE, MAXBUF); struct option longopts[] = { { "nofork", no_argument, &do_nofork, 1 }, { "logfile", required_argument, NULL, 'f' }, { "config", required_argument, NULL, 'c' }, { "debug", no_argument, &do_debug, 1 }, { "nolog", no_argument, &do_nolog, 1 }, { "runasroot", no_argument, &do_root, 1 }, { "version", no_argument, &do_version, 1 }, { 0, 0, 0, 0 } }; while ((c = getopt_long_only(argc, argv, ":f:", longopts, NULL)) != -1) { switch (c) { case 'f': /* Log filename was set */ strlcpy(LogFileName, optarg, MAXBUF); break; case 'c': /* Config filename was set */ strlcpy(ConfigFileName, optarg, MAXBUF); break; case 0: /* getopt_long_only() set an int variable, just keep going */ break; default: /* Unknown parameter! DANGER, INTRUDER.... err.... yeah. */ printf("Usage: %s [--nofork] [--nolog] [--debug] [--logfile ] [--runasroot] [--version] [--config ]\n", argv[0]); Exit(EXIT_STATUS_ARGV); break; } } if (do_version) { printf("\n%s r%s\n", VERSION, REVISION); Exit(EXIT_STATUS_NOERROR); } #ifdef WIN32 // Handle forking if(!do_nofork && !owner_processid) { DWORD ExitCode = WindowsForkStart(this); if(ExitCode) Exit(ExitCode); } // Set up winsock WSADATA wsadata; WSAStartup(MAKEWORD(2,0), &wsadata); #endif if (!ServerConfig::FileExists(this->ConfigFileName)) { printf("ERROR: Cannot open config file: %s\nExiting...\n", this->ConfigFileName); this->Log(DEFAULT,"Unable to open config file %s", this->ConfigFileName); Exit(EXIT_STATUS_CONFIG); } printf_c("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__); printf_c("(C) InspIRCd Development Team.\033[0m\n\n"); printf_c("Developers:\t\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special, pippijn, peavey, Burlex\033[0m\n"); printf_c("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n"); /* Set the finished argument values */ Config->nofork = do_nofork; Config->forcedebug = do_debug; Config->writelog = !do_nolog; strlcpy(Config->MyExecutable,argv[0],MAXBUF); this->OpenLog(argv, argc); this->stats = new serverstats(); this->Timers = new TimerManager(this); this->Parser = new CommandParser(this); this->XLines = new XLineManager(this); Config->ClearStack(); Config->Read(true, NULL); if (!do_root) this->CheckRoot(); else { printf("* WARNING * WARNING * WARNING * WARNING * WARNING * \n\n"); printf("YOU ARE RUNNING INSPIRCD AS ROOT. THIS IS UNSUPPORTED\n"); printf("AND IF YOU ARE HACKED, CRACKED, SPINDLED OR MUTILATED\n"); printf("OR ANYTHING ELSE UNEXPECTED HAPPENS TO YOU OR YOUR\n"); printf("SERVER, THEN IT IS YOUR OWN FAULT. IF YOU DID NOT MEAN\n"); printf("TO START INSPIRCD AS ROOT, HIT CTRL+C NOW AND RESTART\n"); printf("THE PROGRAM AS A NORMAL USER. YOU HAVE BEEN WARNED!\n"); printf("\nInspIRCd starting in 20 seconds, ctrl+c to abort...\n"); sleep(20); } this->SetSignals(); if (!Config->nofork) { if (!this->DaemonSeed()) { printf("ERROR: could not go into daemon mode. Shutting down.\n"); Log(DEFAULT,"ERROR: could not go into daemon mode. Shutting down."); Exit(EXIT_STATUS_FORK); } } /* Because of limitations in kqueue on freebsd, we must fork BEFORE we * initialize the socket engine. */ SocketEngineFactory* SEF = new SocketEngineFactory(); SE = SEF->Create(this); delete SEF; this->Modes = new ModeParser(this); this->AddServerName(Config->ServerName); CheckDie(); int bounditems = BindPorts(true, found_ports, pl); for(int t = 0; t < 255; t++) Config->global_implementation[t] = 0; memset(&Config->implement_lists,0,sizeof(Config->implement_lists)); printf("\n"); this->Res = new DNS(this); this->LoadAllModules(); /* Just in case no modules were loaded - fix for bug #101 */ this->BuildISupport(); InitializeDisabledCommands(Config->DisabledCommands, this); if ((Config->ports.size() == 0) && (found_ports > 0)) { printf("\nERROR: I couldn't bind any ports! Are you sure you didn't start InspIRCd twice?\n"); Log(DEFAULT,"ERROR: I couldn't bind any ports! Are you sure you didn't start InspIRCd twice?"); Exit(EXIT_STATUS_BIND); } if (Config->ports.size() != (unsigned int)found_ports) { printf("\nWARNING: Not all your client ports could be bound --\nstarting anyway with %d of %d client ports bound.\n\n", bounditems, found_ports); printf("The following port(s) failed to bind:\n"); int j = 1; for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++) { printf("%d.\tIP: %s\tPort: %lu\n", j, i->first.empty() ? "" : i->first.c_str(), (unsigned long)i->second); } } #ifndef WINDOWS if (!Config->nofork) { if (kill(getppid(), SIGTERM) == -1) { printf("Error killing parent process: %s\n",strerror(errno)); Log(DEFAULT,"Error killing parent process: %s",strerror(errno)); } } if (isatty(0) && isatty(1) && isatty(2)) { /* We didn't start from a TTY, we must have started from a background process - * e.g. we are restarting, or being launched by cron. Dont kill parent, and dont * close stdin/stdout */ if (!do_nofork) { fclose(stdin); fclose(stderr); fclose(stdout); } else { Log(DEFAULT,"Keeping pseudo-tty open as we are running in the foreground."); } } #else InitIPC(); if(!Config->nofork) { WindowsForkKillOwner(this); FreeConsole(); } #endif printf("\nInspIRCd is now running!\n"); Log(DEFAULT,"Startup complete."); this->WritePID(Config->PID); } void InspIRCd::DoOneIteration(bool process_module_sockets) { #ifndef WIN32 static rusage ru; #else static time_t uptime; static struct tm * stime; static char window_title[100]; #endif /* time() seems to be a pretty expensive syscall, so avoid calling it too much. * Once per loop iteration is pleanty. */ OLDTIME = TIME; TIME = time(NULL); /* Run background module timers every few seconds * (the docs say modules shouldnt rely on accurate * timing using this event, so we dont have to * time this exactly). */ if (TIME != OLDTIME) { if (TIME < OLDTIME) WriteOpers("*** \002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %d secs.",abs(OLDTIME-TIME)); if ((TIME % 3600) == 0) { this->RehashUsersAndChans(); FOREACH_MOD_I(this, I_OnGarbageCollect, OnGarbageCollect()); } Timers->TickTimers(TIME); this->DoBackgroundUserStuff(TIME); if ((TIME % 5) == 0) { XLines->expire_lines(); FOREACH_MOD_I(this,I_OnBackgroundTimer,OnBackgroundTimer(TIME)); Timers->TickMissedTimers(TIME); } #ifndef WIN32 /* Same change as in cmd_stats.cpp, use RUSAGE_SELF rather than '0' -- Om */ if (!getrusage(RUSAGE_SELF, &ru)) { gettimeofday(&this->stats->LastSampled, NULL); this->stats->LastCPU = ru.ru_utime; } #else CheckIPC(this); if(Config->nofork) { uptime = Time() - startup_time; stime = gmtime(&uptime); snprintf(window_title, 100, "InspIRCd - %u clients, %u accepted connections - Up %u days, %.2u:%.2u:%.2u", LocalUserCount(), stats->statsAccept, stime->tm_yday, stime->tm_hour, stime->tm_min, stime->tm_sec); SetConsoleTitle(window_title); } #endif } /* Call the socket engine to wait on the active * file descriptors. The socket engine has everything's * descriptors in its list... dns, modules, users, * servers... so its nice and easy, just one call. * This will cause any read or write events to be * dispatched to their handlers. */ this->SE->DispatchEvents(); /* if any users was quit, take them out */ this->GlobalCulls.Apply(); /* If any inspsockets closed, remove them */ this->InspSocketCull(); } void InspIRCd::InspSocketCull() { for (std::map::iterator x = SocketCull.begin(); x != SocketCull.end(); ++x) { SE->DelFd(x->second); x->second->Close(); delete x->second; } SocketCull.clear(); } int InspIRCd::Run() { while (true) { DoOneIteration(true); } /* This is never reached -- we hope! */ return 0; } /**********************************************************************************/ /** * An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*. */ int main(int argc, char** argv) { SI = new InspIRCd(argc, argv); SI->Run(); delete SI; return 0; } /* this returns true when all modules are satisfied that the user should be allowed onto the irc server * (until this returns true, a user will block in the waiting state, waiting to connect up to the * registration timeout maximum seconds) */ bool InspIRCd::AllModulesReportReady(userrec* user) { if (!Config->global_implementation[I_OnCheckReady]) return true; for (int i = 0; i <= this->GetModuleCount(); i++) { if (Config->implement_lists[i][I_OnCheckReady]) { int res = modules[i]->OnCheckReady(user); if (!res) return false; } } return true; } int InspIRCd::GetModuleCount() { return this->ModCount; } time_t InspIRCd::Time(bool delta) { if (delta) return TIME + time_delta; return TIME; } int InspIRCd::SetTimeDelta(int delta) { int old = time_delta; time_delta = delta; this->Log(DEBUG, "Time delta set to %d (was %d)", time_delta, old); return old; } void InspIRCd::AddLocalClone(userrec* user) { clonemap::iterator x = local_clones.find(user->GetIPString()); if (x != local_clones.end()) x->second++; else local_clones[user->GetIPString()] = 1; } void InspIRCd::AddGlobalClone(userrec* user) { clonemap::iterator y = global_clones.find(user->GetIPString()); if (y != global_clones.end()) y->second++; else global_clones[user->GetIPString()] = 1; } int InspIRCd::GetTimeDelta() { return time_delta; }