1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2009 InspIRCd Development Team
6 * See: http://wiki.inspircd.org/Credits
8 * This program is free but copyrighted software; see
9 * the file COPYING for details.
11 * ---------------------------------------------------
14 /* $Install: src/inspircd $(BINPATH) */
21 #include <sys/resource.h>
25 /* Some systems don't define RUSAGE_SELF. This should fix them. */
30 #include <pwd.h> // setuid
31 #include <grp.h> // setgid
37 #include "socketengine.h"
38 #include "inspircd_se_config.h"
40 #include "command_parse.h"
41 #include "exitcodes.h"
43 #include "testsuite.h"
48 /** Seperate from the other casemap tables so that code *can* still exclusively rely on RFC casemapping
51 * This is provided as a pointer so that modules can change it to their custom mapping tables,
52 * e.g. for national character support.
54 unsigned const char *national_case_insensitive_map = rfc_case_insensitive_map;
57 /* Moved from exitcodes.h -- due to duplicate symbols -- Burlex
58 * XXX this is a bit ugly. -- w00t
60 const char* ExitCodes[] =
63 "DIE command", /* 1 */
64 "execv() failed", /* 2 */
65 "Internal error", /* 3 */
66 "Config file error", /* 4 */
67 "Logfile error", /* 5 */
68 "POSIX fork failed", /* 6 */
69 "Bad commandline parameters", /* 7 */
70 "No ports could be bound", /* 8 */
71 "Can't write PID file", /* 9 */
72 "SocketEngine could not initialize", /* 10 */
73 "Refusing to start up as root", /* 11 */
74 "Found a <die> tag!", /* 12 */
75 "Couldn't load module on startup", /* 13 */
76 "Could not create windows forked process", /* 14 */
77 "Received SIGTERM", /* 15 */
78 "Bad command handler loaded", /* 16 */
79 "RegisterServiceCtrlHandler failed", /* 17 */
80 "UpdateSCMStatus failed", /* 18 */
81 "CreateEvent failed" /* 19 */
84 template<typename T> static void DeleteZero(T* n)
93 void InspIRCd::Cleanup()
97 for (unsigned int i = 0; i < Config->ports.size(); i++)
99 /* This calls the constructor and closes the listening socket */
100 delete Config->ports[i];
103 Config->ports.clear();
106 /* Close all client sockets, or the new process inherits them */
107 for (std::vector<User*>::const_iterator i = this->Users->local_users.begin(); i != this->Users->local_users.end(); i++)
109 this->Users->QuitUser((*i), "Server shutdown");
113 /* We do this more than once, so that any service providers get a
114 * chance to be unhooked by the modules using them, but then get
115 * a chance to be removed themsleves.
117 * XXX there may be a better way to do this with 1.2
119 for (int tries = 0; tries < 3; tries++)
121 std::vector<std::string> module_names = Modules->GetAllModuleNames(0);
122 for (std::vector<std::string>::iterator k = module_names.begin(); k != module_names.end(); ++k)
124 /* Unload all modules, so they get a chance to clean up their listeners */
125 this->Modules->Unload(k->c_str());
128 /* Remove core commands */
129 Parser->RemoveCommands("<core>");
131 /* Cleanup Server Names */
132 for(servernamelist::iterator itr = servernames.begin(); itr != servernames.end(); ++itr)
135 /* Delete objects dynamically allocated in constructor (destructor would be more appropriate, but we're likely exiting) */
136 /* Must be deleted before modes as it decrements modelines */
137 DeleteZero(this->Users);
138 DeleteZero(this->Modes);
139 DeleteZero(this->XLines);
140 DeleteZero(this->Parser);
141 DeleteZero(this->stats);
142 DeleteZero(this->Modules);
143 DeleteZero(this->BanCache);
144 DeleteZero(this->SNO);
145 DeleteZero(this->Config);
146 DeleteZero(this->Res);
147 DeleteZero(this->chanlist);
148 DeleteZero(this->PI);
149 DeleteZero(this->Threads);
150 DeleteZero(this->Timers);
152 this->Logs->CloseLogs();
153 DeleteZero(this->Logs);
156 void InspIRCd::Restart(const std::string &reason)
158 /* SendError flushes each client's queue,
159 * regardless of writeability state
161 this->SendError(reason);
163 /* Figure out our filename (if theyve renamed it, we're boned) */
167 char module[MAX_PATH];
168 if (GetModuleFileName(NULL, module, MAX_PATH))
171 me = Config->MyDir + "/inspircd";
174 char** argv = Config->argv;
178 if (execv(me.c_str(), argv) == -1)
180 /* Will raise a SIGABRT if not trapped */
181 throw CoreException(std::string("Failed to execv()! error: ") + strerror(errno));
185 void InspIRCd::ResetMaxBans()
187 for (chan_hash::const_iterator i = chanlist->begin(); i != chanlist->end(); i++)
188 i->second->ResetMaxBans();
191 /** Because hash_map doesnt free its buckets when we delete items (this is a 'feature')
192 * we must occasionally rehash the hash (yes really).
193 * We do this by copying the entries from the old hash to a new hash, causing all
194 * empty buckets to be weeded out of the hash. We dont do this on a timer, as its
195 * very expensive, so instead we do it when the user types /REHASH and expects a
196 * short delay anyway.
198 void InspIRCd::RehashUsersAndChans()
200 user_hash* old_users = this->Users->clientlist;
201 user_hash* old_uuid = this->Users->uuidlist;
202 chan_hash* old_chans = this->chanlist;
204 this->Users->clientlist = new user_hash();
205 this->Users->uuidlist = new user_hash();
206 this->chanlist = new chan_hash();
208 for (user_hash::const_iterator n = old_users->begin(); n != old_users->end(); n++)
209 this->Users->clientlist->insert(*n);
213 for (user_hash::const_iterator n = old_uuid->begin(); n != old_uuid->end(); n++)
214 this->Users->uuidlist->insert(*n);
218 for (chan_hash::const_iterator n = old_chans->begin(); n != old_chans->end(); n++)
219 this->chanlist->insert(*n);
224 void InspIRCd::SetSignals()
227 signal(SIGALRM, SIG_IGN);
228 signal(SIGHUP, InspIRCd::SetSignal);
229 signal(SIGPIPE, SIG_IGN);
230 signal(SIGCHLD, SIG_IGN);
231 /* We want E2BIG not a signal! */
232 signal(SIGXFSZ, SIG_IGN);
234 signal(SIGTERM, InspIRCd::SetSignal);
237 void InspIRCd::QuickExit(int status)
242 bool InspIRCd::DaemonSeed()
245 printf_c("InspIRCd Process ID: \033[1;32m%lu\033[0m\n", GetCurrentProcessId());
248 signal(SIGTERM, InspIRCd::QuickExit);
251 if ((childpid = fork ()) < 0)
253 else if (childpid > 0)
255 /* We wait here for the child process to kill us,
256 * so that the shell prompt doesnt come back over
258 * Sending a kill with a signal of 0 just checks
259 * if the child pid is still around. If theyre not,
260 * they threw an error and we should give up.
262 while (kill(childpid, 0) != -1)
268 printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
270 signal(SIGTERM, InspIRCd::SetSignal);
273 if (getrlimit(RLIMIT_CORE, &rl) == -1)
275 this->Logs->Log("STARTUP",DEFAULT,"Failed to getrlimit()!");
280 rl.rlim_cur = rl.rlim_max;
281 if (setrlimit(RLIMIT_CORE, &rl) == -1)
282 this->Logs->Log("STARTUP",DEFAULT,"setrlimit() failed, cannot increase coredump size.");
289 void InspIRCd::WritePID(const std::string &filename)
291 std::string fname = (filename.empty() ? "inspircd.pid" : filename);
292 std::replace(fname.begin(), fname.end(), '\\', '/');
293 if ((fname[0] != '/') && (!Config->StartsWithWindowsDriveLetter(filename)))
295 std::string::size_type pos;
296 std::string confpath = this->ConfigFileName;
297 if ((pos = confpath.rfind("/")) != std::string::npos)
299 /* Leaves us with just the path */
300 fname = confpath.substr(0, pos) + std::string("/") + fname;
303 std::ofstream outfile(fname.c_str());
304 if (outfile.is_open())
311 printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
312 this->Logs->Log("STARTUP",DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
313 Exit(EXIT_STATUS_PID);
317 InspIRCd::InspIRCd(int argc, char** argv)
320 /* Functor initialisation. Note that the ordering here is very important.
322 * THIS MUST MATCH ORDER OF DECLARATION OF THE HandleWhateverFunc classes
323 * within class InspIRCd.
325 HandleProcessUser(this),
328 HandleFindDescriptor(this),
329 HandleFloodQuitUser(this),
330 HandleIsChannel(this),
334 /* Functor pointer initialisation. Must match the order of the list above
336 * THIS MUST MATCH THE ORDER OF DECLARATION OF THE FUNCTORS, e.g. the methods
337 * themselves within the class.
339 ProcessUser(&HandleProcessUser),
340 IsChannel(&HandleIsChannel),
342 Rehash(&HandleRehash),
343 IsNick(&HandleIsNick),
344 IsIdent(&HandleIsIdent),
345 FindDescriptor(&HandleFindDescriptor),
346 FloodQuitUser(&HandleFloodQuitUser)
350 // Strict, frequent checking of memory on debug builds
351 _CrtSetDbgFlag ( _CRTDBG_CHECK_ALWAYS_DF | _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
353 // Avoid erroneous frees on early exit
358 int do_version = 0, do_nofork = 0, do_debug = 0,
359 do_nolog = 0, do_root = 0, do_testsuite = 0; /* flag variables */
362 // Initialize so that if we exit before proper initialization they're not deleted
380 this->TIME = time(NULL);
382 memset(&server, 0, sizeof(server));
383 memset(&client, 0, sizeof(client));
385 // This must be created first, so other parts of Insp can use it while starting up
386 this->Logs = new LogManager(this);
388 SocketEngineFactory* SEF = new SocketEngineFactory();
389 SE = SEF->Create(this);
392 this->Threads = new ThreadEngine(this);
394 /* Default implementation does nothing */
395 this->PI = new ProtocolInterface(this);
399 // Create base manager classes early, so nothing breaks
400 this->Users = new UserManager(this);
402 this->Users->unregistered_count = 0;
404 this->Users->clientlist = new user_hash();
405 this->Users->uuidlist = new user_hash();
406 this->chanlist = new chan_hash();
408 this->Config = new ServerConfig(this);
409 this->SNO = new SnomaskManager(this);
410 this->BanCache = new BanCacheManager(this);
411 this->Modules = new ModuleManager(this);
412 this->stats = new serverstats();
413 this->Timers = new TimerManager(this);
414 this->Parser = new CommandParser(this);
415 this->XLines = new XLineManager(this);
417 this->Config->argv = argv;
418 this->Config->argc = argc;
420 if (chdir(Config->GetFullProgDir().c_str()))
422 printf("Unable to change to my directory: %s\nAborted.", strerror(errno));
426 this->Config->opertypes.clear();
427 this->Config->operclass.clear();
429 this->TIME = this->OLDTIME = this->startup_time = time(NULL);
432 *this->LogFileName = 0;
433 strlcpy(this->ConfigFileName, CONFIG_FILE, MAXBUF);
435 struct option longopts[] =
437 { "nofork", no_argument, &do_nofork, 1 },
438 { "logfile", required_argument, NULL, 'f' },
439 { "config", required_argument, NULL, 'c' },
440 { "debug", no_argument, &do_debug, 1 },
441 { "nolog", no_argument, &do_nolog, 1 },
442 { "runasroot", no_argument, &do_root, 1 },
443 { "version", no_argument, &do_version, 1 },
444 { "testsuite", no_argument, &do_testsuite, 1 },
448 while ((c = getopt_long_only(argc, argv, ":f:", longopts, NULL)) != -1)
453 /* Log filename was set */
454 strlcpy(LogFileName, optarg, MAXBUF);
457 /* Config filename was set */
458 strlcpy(ConfigFileName, optarg, MAXBUF);
461 /* getopt_long_only() set an int variable, just keep going */
464 /* Unknown parameter! DANGER, INTRUDER.... err.... yeah. */
465 printf("Usage: %s [--nofork] [--nolog] [--debug] [--logfile <filename>]\n\
466 [--runasroot] [--version] [--config <config>] [--testsuite]\n", argv[0]);
467 Exit(EXIT_STATUS_ARGV);
473 do_nofork = do_debug = true;
477 printf("\n%s r%s\n", VERSION, REVISION);
478 Exit(EXIT_STATUS_NOERROR);
486 DWORD ExitCode = WindowsForkStart(this);
493 WSAStartup(MAKEWORD(2,0), &wsadata);
494 ChangeWindowsSpecificPointers(this);
496 strlcpy(Config->MyExecutable,argv[0],MAXBUF);
498 /* Set the finished argument values */
499 Config->nofork = do_nofork;
500 Config->forcedebug = do_debug;
501 Config->writelog = !do_nolog;
502 Config->TestSuite = do_testsuite;
504 if (!this->OpenLog(argv, argc))
506 printf("ERROR: Could not open logfile %s: %s\n\n", Config->logpath.c_str(), strerror(errno));
507 Exit(EXIT_STATUS_LOG);
510 if (!ServerConfig::FileExists(this->ConfigFileName))
513 /* Windows can (and defaults to) hide file extensions, so let's play a bit nice for windows users. */
514 std::string txtconf = this->ConfigFileName;
515 txtconf.append(".txt");
517 if (ServerConfig::FileExists(txtconf.c_str()))
519 strlcat(this->ConfigFileName, ".txt", MAXBUF);
524 printf("ERROR: Cannot open config file: %s\nExiting...\n", this->ConfigFileName);
525 this->Logs->Log("STARTUP",DEFAULT,"Unable to open config file %s", this->ConfigFileName);
526 Exit(EXIT_STATUS_CONFIG);
530 printf_c("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
531 printf_c("(C) InspIRCd Development Team.\033[0m\n\n");
532 printf_c("Developers:\n");
533 printf_c("\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special\n");
534 printf_c("\t\033[1;32mpeavey, aquanight, psychon, dz, danieldg\033[0m\n\n");
535 printf_c("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
537 Config->ClearStack();
539 this->Modes = new ModeParser(this);
545 printf("* WARNING * WARNING * WARNING * WARNING * WARNING * \n\n");
546 printf("YOU ARE RUNNING INSPIRCD AS ROOT. THIS IS UNSUPPORTED\n");
547 printf("AND IF YOU ARE HACKED, CRACKED, SPINDLED OR MUTILATED\n");
548 printf("OR ANYTHING ELSE UNEXPECTED HAPPENS TO YOU OR YOUR\n");
549 printf("SERVER, THEN IT IS YOUR OWN FAULT. IF YOU DID NOT MEAN\n");
550 printf("TO START INSPIRCD AS ROOT, HIT CTRL+C NOW AND RESTART\n");
551 printf("THE PROGRAM AS A NORMAL USER. YOU HAVE BEEN WARNED!\n");
552 printf("\nInspIRCd starting in 20 seconds, ctrl+c to abort...\n");
560 if (!this->DaemonSeed())
562 printf("ERROR: could not go into daemon mode. Shutting down.\n");
563 Logs->Log("STARTUP", DEFAULT, "ERROR: could not go into daemon mode. Shutting down.");
564 Exit(EXIT_STATUS_FORK);
568 SE->RecoverFromFork();
570 /* During startup we don't actually initialize this
571 * in the thread engine.
573 this->ConfigThread = new ConfigReaderThread(this, true, "");
576 this->ConfigThread = NULL;
577 /* Switch over logfiles */
578 Logs->OpenFileLogs();
580 /** Note: This is safe, the method checks for user == NULL */
581 this->Parser->SetupCommandTable();
583 this->Res = new DNS(this);
585 this->AddServerName(Config->ServerName);
588 * Initialise SID/UID.
589 * For an explanation as to exactly how this works, and why it works this way, see GetUID().
597 for (const char* x = Config->ServerName; *x; ++x)
599 for (const char* y = Config->ServerDesc; *y; ++y)
603 Config->sid[0] = (char)(sid / 100 + 48);
604 Config->sid[1] = (char)(((sid / 10) % 10) + 48);
605 Config->sid[2] = (char)(sid % 10 + 48);
606 Config->sid[3] = '\0';
609 /* set up fake client again this time with the correct uid */
610 this->FakeClient = new User(this, "#INVALID");
611 this->FakeClient->SetFd(FD_MAGIC_NUMBER);
613 // Get XLine to do it's thing.
614 this->XLines->CheckELines();
615 this->XLines->ApplyLines();
618 int bounditems = BindPorts(true, found_ports, pl);
622 this->Modules->LoadAll();
624 /* Just in case no modules were loaded - fix for bug #101 */
625 this->BuildISupport();
626 InitializeDisabledCommands(Config->DisabledCommands, this);
628 if (Config->ports.size() != (unsigned int)found_ports)
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 printf("Hint: Try using a public IP instead of blank or *\n\n");
634 for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
636 printf("%d.\tAddress: %s\tReason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
640 printf("\nInspIRCd is now running as '%s'[%s] with %d max open sockets\n", Config->ServerName,Config->GetSID().c_str(), SE->GetMaxFds());
645 if (kill(getppid(), SIGTERM) == -1)
647 printf("Error killing parent process: %s\n",strerror(errno));
648 Logs->Log("STARTUP", DEFAULT, "Error killing parent process: %s",strerror(errno));
652 if (isatty(0) && isatty(1) && isatty(2))
654 /* We didn't start from a TTY, we must have started from a background process -
655 * e.g. we are restarting, or being launched by cron. Dont kill parent, and dont
658 if ((!do_nofork) && (!do_testsuite))
666 Logs->Log("STARTUP", DEFAULT,"Keeping pseudo-tty open as we are running in the foreground.");
670 WindowsIPC = new IPC(this);
673 WindowsForkKillOwner(this);
676 /* Set win32 service as running, if we are running as a service */
680 Logs->Log("STARTUP", DEFAULT, "Startup complete as '%s'[%s], %d max open sockets", Config->ServerName,Config->GetSID().c_str(), SE->GetMaxFds());
683 if (*(this->Config->SetGroup))
688 ret = setgroups(0, NULL);
692 this->Logs->Log("SETGROUPS", DEFAULT, "setgroups() failed (wtf?): %s", strerror(errno));
700 g = getgrnam(this->Config->SetGroup);
704 this->Logs->Log("SETGUID", DEFAULT, "getgrnam() failed (bad user?): %s", strerror(errno));
708 ret = setgid(g->gr_gid);
712 this->Logs->Log("SETGUID", DEFAULT, "setgid() failed (bad user?): %s", strerror(errno));
717 if (*(this->Config->SetUser))
723 u = getpwnam(this->Config->SetUser);
727 this->Logs->Log("SETGUID", DEFAULT, "getpwnam() failed (bad user?): %s", strerror(errno));
731 int ret = setuid(u->pw_uid);
735 this->Logs->Log("SETGUID", DEFAULT, "setuid() failed (bad user?): %s", strerror(errno));
741 this->WritePID(Config->PID);
746 /* See if we're supposed to be running the test suite rather than entering the mainloop */
747 if (Config->TestSuite)
749 TestSuite* ts = new TestSuite(this);
759 static time_t uptime;
760 static struct tm * stime;
761 static char window_title[100];
764 /* Check if there is a config thread which has finished executing but has not yet been freed */
765 if (this->ConfigThread && this->ConfigThread->IsDone())
767 /* Rehash has completed */
769 /* Switch over logfiles */
771 Logs->OpenFileLogs();
773 this->Logs->Log("CONFIG",DEBUG,"Detected ConfigThread exiting, tidying up...");
775 /* These are currently not known to be threadsafe, so they are executed outside
776 * of the thread. It would be pretty simple to move them to the thread Run method
777 * once they are known threadsafe with all the correct mutexes in place. This might
778 * not be worth the effort however as these functions execute relatively quickly
779 * and would not benefit from being within the config read thread.
781 * XXX: The order of these is IMPORTANT, do not reorder them without testing
784 this->XLines->CheckELines();
785 this->XLines->ApplyLines();
787 this->ResetMaxBans();
788 InitializeDisabledCommands(Config->DisabledCommands, this);
789 User* user = !Config->RehashUserUID.empty() ? FindNick(Config->RehashUserUID) : NULL;
790 FOREACH_MOD_I(this, I_OnRehash, OnRehash(user, Config->RehashParameter));
791 this->BuildISupport();
793 /* IMPORTANT: This delete may hang if you fuck up your thread syncronization.
794 * It will hang waiting for the ConfigThread to 'join' to avoid race conditons,
795 * until the other thread is completed.
801 /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
802 * Once per loop iteration is pleanty.
807 /* Run background module timers every few seconds
808 * (the docs say modules shouldnt rely on accurate
809 * timing using this event, so we dont have to
810 * time this exactly).
814 /* Allow a buffer of two seconds drift on this so that ntpdate etc dont harass admins */
815 if (TIME < OLDTIME - 2)
817 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %lu secs.", (unsigned long)OLDTIME-TIME);
819 else if (TIME > OLDTIME + 2)
821 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is jumping FORWARDS! Clock skipped %lu secs.", (unsigned long)TIME - OLDTIME);
824 if ((TIME % 3600) == 0)
826 this->RehashUsersAndChans();
827 FOREACH_MOD_I(this, I_OnGarbageCollect, OnGarbageCollect());
830 Timers->TickTimers(TIME);
831 this->DoBackgroundUserStuff();
835 FOREACH_MOD_I(this,I_OnBackgroundTimer,OnBackgroundTimer(TIME));
836 SNO->FlushSnotices();
839 /* Same change as in cmd_stats.cpp, use RUSAGE_SELF rather than '0' -- Om */
840 if (!getrusage(RUSAGE_SELF, &ru))
842 gettimeofday(&this->stats->LastSampled, NULL);
843 this->stats->LastCPU = ru.ru_utime;
850 /* Call the socket engine to wait on the active
851 * file descriptors. The socket engine has everything's
852 * descriptors in its list... dns, modules, users,
853 * servers... so its nice and easy, just one call.
854 * This will cause any read or write events to be
855 * dispatched to their handlers.
857 this->SE->DispatchEvents();
859 /* if any users were quit, take them out */
860 this->GlobalCulls.Apply();
862 /* If any inspsockets closed, remove them */
863 this->BufferedSocketCull();
867 this->SignalHandler(s_signal);
875 void InspIRCd::BufferedSocketCull()
877 for (std::map<BufferedSocket*,BufferedSocket*>::iterator x = SocketCull.begin(); x != SocketCull.end(); ++x)
879 this->Logs->Log("MISC",DEBUG,"Cull socket");
880 SE->DelFd(x->second);
887 /**********************************************************************************/
890 * An ircd in five lines! bwahahaha. ahahahahaha. ahahah *cough*.
893 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
894 * (until this returns true, a user will block in the waiting state, waiting to connect up to the
895 * registration timeout maximum seconds)
897 bool InspIRCd::AllModulesReportReady(User* user)
899 for (EventHandlerIter i = Modules->EventHandlers[I_OnCheckReady].begin(); i != Modules->EventHandlers[I_OnCheckReady].end(); ++i)
901 if (!(*i)->OnCheckReady(user))
907 time_t InspIRCd::Time()
912 void InspIRCd::SetSignal(int signal)
917 /* On posix systems, the flow of the program starts right here, with
918 * ENTRYPOINT being a #define that defines main(). On Windows, ENTRYPOINT
919 * defines smain() and the real main() is in the service code under
920 * win32service.cpp. This allows the service control manager to control
921 * the process where we are running as a windows service.
925 SI = new InspIRCd(argc, argv);
926 mysig = &SI->s_signal;