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Don't hardcode conf/inspircd.conf as the config file, allow the configure script...
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1 /*
2  * InspIRCd -- Internet Relay Chat Daemon
3  *
4  *   Copyright (C) 2012 William Pitcock <nenolod@dereferenced.org>
5  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
6  *   Copyright (C) 2003-2008 Craig Edwards <craigedwards@brainbox.cc>
7  *   Copyright (C) 2008 Uli Schlachter <psychon@znc.in>
8  *   Copyright (C) 2006-2008 Robin Burchell <robin+git@viroteck.net>
9  *   Copyright (C) 2006-2007 Oliver Lupton <oliverlupton@gmail.com>
10  *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
11  *   Copyright (C) 2007 Burlex <???@???>
12  *   Copyright (C) 2003 Craig McLure <craig@chatspike.net>
13  *   Copyright (C) 2003 randomdan <???@???>
14  *
15  * This file is part of InspIRCd.  InspIRCd is free software: you can
16  * redistribute it and/or modify it under the terms of the GNU General Public
17  * License as published by the Free Software Foundation, version 2.
18  *
19  * This program is distributed in the hope that it will be useful, but WITHOUT
20  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
21  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
22  * details.
23  *
24  * You should have received a copy of the GNU General Public License
25  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
26  */
27
28
29 /* $Core */
30 #include "inspircd.h"
31 #include "inspircd_version.h"
32 #include <signal.h>
33
34 #ifndef WIN32
35         #include <dirent.h>
36         #include <unistd.h>
37         #include <sys/resource.h>
38         #include <dlfcn.h>
39         #include <getopt.h>
40
41         /* Some systems don't define RUSAGE_SELF. This should fix them. */
42         #ifndef RUSAGE_SELF
43                 #define RUSAGE_SELF 0
44         #endif
45
46         #include <pwd.h> // setuid
47         #include <grp.h> // setgid
48 #endif
49
50 #include <fstream>
51 #include "xline.h"
52 #include "bancache.h"
53 #include "socketengine.h"
54 #include "socket.h"
55 #include "command_parse.h"
56 #include "exitcodes.h"
57 #include "caller.h"
58 #include "testsuite.h"
59
60 InspIRCd* ServerInstance = NULL;
61 int* mysig = NULL;
62
63 /** Seperate from the other casemap tables so that code *can* still exclusively rely on RFC casemapping
64  * if it must.
65  *
66  * This is provided as a pointer so that modules can change it to their custom mapping tables,
67  * e.g. for national character support.
68  */
69 unsigned const char *national_case_insensitive_map = rfc_case_insensitive_map;
70
71
72 /* Moved from exitcodes.h -- due to duplicate symbols -- Burlex
73  * XXX this is a bit ugly. -- w00t
74  */
75 const char* ExitCodes[] =
76 {
77                 "No error", /* 0 */
78                 "DIE command", /* 1 */
79                 "execv() failed", /* 2 */
80                 "Internal error", /* 3 */
81                 "Config file error", /* 4 */
82                 "Logfile error", /* 5 */
83                 "POSIX fork failed", /* 6 */
84                 "Bad commandline parameters", /* 7 */
85                 "No ports could be bound", /* 8 */
86                 "Can't write PID file", /* 9 */
87                 "SocketEngine could not initialize", /* 10 */
88                 "Refusing to start up as root", /* 11 */
89                 "Found a <die> tag!", /* 12 */
90                 "Couldn't load module on startup", /* 13 */
91                 "Could not create windows forked process", /* 14 */
92                 "Received SIGTERM", /* 15 */
93                 "Bad command handler loaded", /* 16 */
94                 "RegisterServiceCtrlHandler failed", /* 17 */
95                 "UpdateSCMStatus failed", /* 18 */
96                 "CreateEvent failed" /* 19 */
97 };
98
99 template<typename T> static void DeleteZero(T*&n)
100 {
101         T* t = n;
102         n = NULL;
103         delete t;
104 }
105
106 void InspIRCd::Cleanup()
107 {
108         for (unsigned int i = 0; i < ports.size(); i++)
109         {
110                 /* This calls the constructor and closes the listening socket */
111                 ports[i]->cull();
112                 delete ports[i];
113         }
114         ports.clear();
115
116         /* Close all client sockets, or the new process inherits them */
117         std::vector<LocalUser*>::reverse_iterator i = Users->local_users.rbegin();
118         while (i != this->Users->local_users.rend())
119         {
120                 User* u = *i++;
121                 Users->QuitUser(u, "Server shutdown");
122         }
123
124         GlobalCulls.Apply();
125         Modules->UnloadAll();
126
127         /* Delete objects dynamically allocated in constructor (destructor would be more appropriate, but we're likely exiting) */
128         /* Must be deleted before modes as it decrements modelines */
129         if (FakeClient)
130                 FakeClient->cull();
131         if (Res)
132                 Res->cull();
133         DeleteZero(this->FakeClient);
134         DeleteZero(this->Users);
135         DeleteZero(this->Modes);
136         DeleteZero(this->XLines);
137         DeleteZero(this->Parser);
138         DeleteZero(this->stats);
139         DeleteZero(this->Modules);
140         DeleteZero(this->BanCache);
141         DeleteZero(this->SNO);
142         DeleteZero(this->Config);
143         DeleteZero(this->Res);
144         DeleteZero(this->chanlist);
145         DeleteZero(this->PI);
146         DeleteZero(this->Threads);
147         DeleteZero(this->Timers);
148         DeleteZero(this->SE);
149         /* Close logging */
150         this->Logs->CloseLogs();
151         DeleteZero(this->Logs);
152 }
153
154 void InspIRCd::Restart(const std::string &reason)
155 {
156         /* SendError flushes each client's queue,
157          * regardless of writeability state
158          */
159         this->SendError(reason);
160
161         /* Figure out our filename (if theyve renamed it, we're boned) */
162         std::string me;
163
164         char** argv = Config->cmdline.argv;
165
166 #ifdef WINDOWS
167         char module[MAX_PATH];
168         if (GetModuleFileName(NULL, module, MAX_PATH))
169                 me = module;
170 #else
171         me = argv[0];
172 #endif
173
174         this->Cleanup();
175
176         if (execv(me.c_str(), argv) == -1)
177         {
178                 /* Will raise a SIGABRT if not trapped */
179                 throw CoreException(std::string("Failed to execv()! error: ") + strerror(errno));
180         }
181 }
182
183 void InspIRCd::ResetMaxBans()
184 {
185         for (chan_hash::const_iterator i = chanlist->begin(); i != chanlist->end(); i++)
186                 i->second->ResetMaxBans();
187 }
188
189 /** Because hash_map doesn't free its buckets when we delete items, we occasionally
190  * recreate the hash to free them up.
191  * We do this by copying the entries from the old hash to a new hash, causing all
192  * empty buckets to be weeded out of the hash.
193  * Since this is quite expensive, it's not done very often.
194  */
195 void InspIRCd::RehashUsersAndChans()
196 {
197         user_hash* old_users = Users->clientlist;
198         Users->clientlist = new user_hash;
199         for (user_hash::const_iterator n = old_users->begin(); n != old_users->end(); n++)
200                 Users->clientlist->insert(*n);
201         delete old_users;
202
203         user_hash* old_uuid = Users->uuidlist;
204         Users->uuidlist = new user_hash;
205         for (user_hash::const_iterator n = old_uuid->begin(); n != old_uuid->end(); n++)
206                 Users->uuidlist->insert(*n);
207         delete old_uuid;
208
209         chan_hash* old_chans = chanlist;
210         chanlist = new chan_hash;
211         for (chan_hash::const_iterator n = old_chans->begin(); n != old_chans->end(); n++)
212                 chanlist->insert(*n);
213         delete old_chans;
214
215         // Reset the already_sent IDs so we don't wrap it around and drop a message
216         LocalUser::already_sent_id = 0;
217         for (std::vector<LocalUser*>::const_iterator i = Users->local_users.begin(); i != Users->local_users.end(); i++)
218         {
219                 (**i).already_sent = 0;
220                 (**i).RemoveExpiredInvites();
221         }
222 }
223
224 void InspIRCd::SetSignals()
225 {
226 #ifndef WIN32
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);
233 #endif
234         signal(SIGTERM, InspIRCd::SetSignal);
235 }
236
237 void InspIRCd::QuickExit(int status)
238 {
239         exit(0);
240 }
241
242 bool InspIRCd::DaemonSeed()
243 {
244 #ifdef WINDOWS
245         printf_c("InspIRCd Process ID: \033[1;32m%lu\033[0m\n", GetCurrentProcessId());
246         return true;
247 #else
248         signal(SIGTERM, InspIRCd::QuickExit);
249
250         int childpid;
251         if ((childpid = fork ()) < 0)
252                 return false;
253         else if (childpid > 0)
254         {
255                 /* We wait here for the child process to kill us,
256                  * so that the shell prompt doesnt come back over
257                  * the output.
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.
261                  */
262                 while (kill(childpid, 0) != -1)
263                         sleep(1);
264                 exit(0);
265         }
266         setsid ();
267         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
268
269         signal(SIGTERM, InspIRCd::SetSignal);
270
271         rlimit rl;
272         if (getrlimit(RLIMIT_CORE, &rl) == -1)
273         {
274                 this->Logs->Log("STARTUP",DEFAULT,"Failed to getrlimit()!");
275                 return false;
276         }
277         rl.rlim_cur = rl.rlim_max;
278
279         if (setrlimit(RLIMIT_CORE, &rl) == -1)
280                         this->Logs->Log("STARTUP",DEFAULT,"setrlimit() failed, cannot increase coredump size.");
281
282         return true;
283 #endif
284 }
285
286 void InspIRCd::WritePID(const std::string &filename)
287 {
288         std::string fname(filename);
289         if (fname.empty())
290                 fname = "data/inspircd.pid";
291         std::ofstream outfile(fname.c_str());
292         if (outfile.is_open())
293         {
294                 outfile << getpid();
295                 outfile.close();
296         }
297         else
298         {
299                 printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
300                 this->Logs->Log("STARTUP",DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
301                 Exit(EXIT_STATUS_PID);
302         }
303 }
304
305 InspIRCd::InspIRCd(int argc, char** argv) :
306          ConfigFileName(CONFIG_PATH "/inspircd.conf"),
307
308          /* Functor pointer initialisation.
309           *
310           * THIS MUST MATCH THE ORDER OF DECLARATION OF THE FUNCTORS, e.g. the methods
311           * themselves within the class.
312           */
313          NICKForced("NICKForced", NULL),
314          OperQuit("OperQuit", NULL),
315          GenRandom(&HandleGenRandom),
316          IsChannel(&HandleIsChannel),
317          IsSID(&HandleIsSID),
318          Rehash(&HandleRehash),
319          IsNick(&HandleIsNick),
320          IsIdent(&HandleIsIdent),
321          FloodQuitUser(&HandleFloodQuitUser),
322          OnCheckExemption(&HandleOnCheckExemption)
323 {
324 #ifdef WIN32
325         // Strict, frequent checking of memory on debug builds
326         _CrtSetDbgFlag ( _CRTDBG_CHECK_ALWAYS_DF | _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
327
328         // Avoid erroneous frees on early exit
329         WindowsIPC = 0;
330 #endif
331
332         ServerInstance = this;
333
334         Extensions.Register(&NICKForced);
335         Extensions.Register(&OperQuit);
336
337         FailedPortList pl;
338         int do_version = 0, do_nofork = 0, do_debug = 0,
339             do_nolog = 0, do_root = 0, do_testsuite = 0;    /* flag variables */
340         int c = 0;
341
342         // Initialize so that if we exit before proper initialization they're not deleted
343         this->Logs = 0;
344         this->Threads = 0;
345         this->PI = 0;
346         this->Users = 0;
347         this->chanlist = 0;
348         this->Config = 0;
349         this->SNO = 0;
350         this->BanCache = 0;
351         this->Modules = 0;
352         this->stats = 0;
353         this->Timers = 0;
354         this->Parser = 0;
355         this->XLines = 0;
356         this->Modes = 0;
357         this->Res = 0;
358         this->ConfigThread = NULL;
359
360         UpdateTime();
361         this->startup_time = TIME.tv_sec;
362
363         // This must be created first, so other parts of Insp can use it while starting up
364         this->Logs = new LogManager;
365
366         SE = CreateSocketEngine();
367
368         this->Threads = new ThreadEngine;
369
370         /* Default implementation does nothing */
371         this->PI = new ProtocolInterface;
372
373         this->s_signal = 0;
374
375         // Create base manager classes early, so nothing breaks
376         this->Users = new UserManager;
377
378         this->Users->unregistered_count = 0;
379
380         this->Users->clientlist = new user_hash();
381         this->Users->uuidlist = new user_hash();
382         this->chanlist = new chan_hash();
383
384         this->Config = new ServerConfig;
385         this->SNO = new SnomaskManager;
386         this->BanCache = new BanCacheManager;
387         this->Modules = new ModuleManager();
388         this->stats = new serverstats();
389         this->Timers = new TimerManager;
390         this->Parser = new CommandParser;
391         this->XLines = new XLineManager;
392
393         this->Config->cmdline.argv = argv;
394         this->Config->cmdline.argc = argc;
395
396         srandom(TIME.tv_nsec ^ TIME.tv_sec);
397
398         struct option longopts[] =
399         {
400                 { "nofork",     no_argument,            &do_nofork,     1       },
401                 { "logfile",    required_argument,      NULL,           'f'     },
402                 { "config",     required_argument,      NULL,           'c'     },
403                 { "debug",      no_argument,            &do_debug,      1       },
404                 { "nolog",      no_argument,            &do_nolog,      1       },
405                 { "runasroot",  no_argument,            &do_root,       1       },
406                 { "version",    no_argument,            &do_version,    1       },
407                 { "testsuite",  no_argument,            &do_testsuite,  1       },
408                 { 0, 0, 0, 0 }
409         };
410
411         int index;
412         while ((c = getopt_long(argc, argv, ":f:", longopts, &index)) != -1)
413         {
414                 switch (c)
415                 {
416                         case 'f':
417                                 /* Log filename was set */
418                                 Config->cmdline.startup_log = optarg;
419                         break;
420                         case 'c':
421                                 /* Config filename was set */
422                                 ConfigFileName = optarg;
423                         break;
424                         case 0:
425                                 /* getopt_long_only() set an int variable, just keep going */
426                         break;
427                         case '?':
428                                 /* Unknown parameter */
429                         default:
430                                 /* Fall through to handle other weird values too */
431                                 printf("Unknown parameter '%s'\n", argv[optind-1]);
432                                 printf("Usage: %s [--nofork] [--nolog] [--debug] [--logfile <filename>]\n%*s[--runasroot] [--version] [--config <config>] [--testsuite]\n", argv[0], static_cast<int>(8+strlen(argv[0])), " ");
433                                 Exit(EXIT_STATUS_ARGV);
434                         break;
435                 }
436         }
437
438         if (do_testsuite)
439                 do_nofork = do_debug = true;
440
441         if (do_version)
442         {
443                 printf("\n%s r%s\n", VERSION, REVISION);
444                 Exit(EXIT_STATUS_NOERROR);
445         }
446
447 #ifdef WIN32
448
449         // Handle forking
450         if(!do_nofork)
451         {
452                 DWORD ExitCode = WindowsForkStart();
453                 if(ExitCode)
454                         exit(ExitCode);
455         }
456
457         // Set up winsock
458         WSADATA wsadata;
459         WSAStartup(MAKEWORD(2,0), &wsadata);
460         ChangeWindowsSpecificPointers();
461 #endif
462
463         /* Set the finished argument values */
464         Config->cmdline.nofork = do_nofork;
465         Config->cmdline.forcedebug = do_debug;
466         Config->cmdline.writelog = !do_nolog;
467         Config->cmdline.TestSuite = do_testsuite;
468
469         if (do_debug)
470         {
471                 FileWriter* fw = new FileWriter(stdout);
472                 FileLogStream* fls = new FileLogStream(RAWIO, fw);
473                 Logs->AddLogTypes("*", fls, true);
474         }
475         else if (!this->OpenLog(argv, argc))
476         {
477                 printf("ERROR: Could not open initial logfile %s: %s\n\n", Config->cmdline.startup_log.c_str(), strerror(errno));
478                 Exit(EXIT_STATUS_LOG);
479         }
480
481         if (!ServerConfig::FileExists(ConfigFileName.c_str()))
482         {
483 #ifdef WIN32
484                 /* Windows can (and defaults to) hide file extensions, so let's play a bit nice for windows users. */
485                 std::string txtconf = this->ConfigFileName;
486                 txtconf.append(".txt");
487
488                 if (ServerConfig::FileExists(txtconf.c_str()))
489                 {
490                         ConfigFileName = txtconf;
491                 }
492                 else
493 #endif
494                 {
495                         printf("ERROR: Cannot open config file: %s\nExiting...\n", ConfigFileName.c_str());
496                         this->Logs->Log("STARTUP",DEFAULT,"Unable to open config file %s", ConfigFileName.c_str());
497                         Exit(EXIT_STATUS_CONFIG);
498                 }
499         }
500
501         printf_c("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
502         printf_c("(C) InspIRCd Development Team.\033[0m\n\n");
503         printf_c("Developers:\n");
504         printf_c("\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special, peavey\n");
505         printf_c("\t\033[1;32maquanight, psychon, dz, danieldg, jackmcbarn\033[0m\n\n");
506         printf_c("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
507
508         this->Modes = new ModeParser;
509
510         if (!do_root)
511                 this->CheckRoot();
512         else
513         {
514                 printf("* WARNING * WARNING * WARNING * WARNING * WARNING * \n\n");
515                 printf("YOU ARE RUNNING INSPIRCD AS ROOT. THIS IS UNSUPPORTED\n");
516                 printf("AND IF YOU ARE HACKED, CRACKED, SPINDLED OR MUTILATED\n");
517                 printf("OR ANYTHING ELSE UNEXPECTED HAPPENS TO YOU OR YOUR\n");
518                 printf("SERVER, THEN IT IS YOUR OWN FAULT. IF YOU DID NOT MEAN\n");
519                 printf("TO START INSPIRCD AS ROOT, HIT CTRL+C NOW AND RESTART\n");
520                 printf("THE PROGRAM AS A NORMAL USER. YOU HAVE BEEN WARNED!\n");
521                 printf("\nInspIRCd starting in 20 seconds, ctrl+c to abort...\n");
522                 sleep(20);
523         }
524
525         this->SetSignals();
526
527         if (!Config->cmdline.nofork)
528         {
529                 if (!this->DaemonSeed())
530                 {
531                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
532                         Logs->Log("STARTUP", DEFAULT, "ERROR: could not go into daemon mode. Shutting down.");
533                         Exit(EXIT_STATUS_FORK);
534                 }
535         }
536
537         SE->RecoverFromFork();
538
539         /* During startup we don't actually initialize this
540          * in the thread engine.
541          */
542         this->Config->Read();
543         this->Config->Apply(NULL, "");
544         Logs->OpenFileLogs();
545
546         this->Res = new DNS();
547
548         /*
549          * Initialise SID/UID.
550          * For an explanation as to exactly how this works, and why it works this way, see GetUID().
551          *   -- w00t
552          */
553         if (Config->sid.empty())
554         {
555                 // Generate one
556                 unsigned int sid = 0;
557                 char sidstr[4];
558
559                 for (const char* x = Config->ServerName.c_str(); *x; ++x)
560                         sid = 5 * sid + *x;
561                 for (const char* y = Config->ServerDesc.c_str(); *y; ++y)
562                         sid = 5 * sid + *y;
563                 sprintf(sidstr, "%03d", sid % 1000);
564
565                 Config->sid = sidstr;
566         }
567
568         /* set up fake client again this time with the correct uid */
569         this->FakeClient = new FakeUser(Config->sid, Config->ServerName);
570
571         // Get XLine to do it's thing.
572         this->XLines->CheckELines();
573         this->XLines->ApplyLines();
574
575         int bounditems = BindPorts(pl);
576
577         printf("\n");
578
579         this->Modules->LoadAll();
580
581         /* Just in case no modules were loaded - fix for bug #101 */
582         this->BuildISupport();
583         Config->ApplyDisabledCommands(Config->DisabledCommands);
584
585         if (!pl.empty())
586         {
587                 printf("\nWARNING: Not all your client ports could be bound --\nstarting anyway with %d of %d client ports bound.\n\n",
588                         bounditems, bounditems + (int)pl.size());
589                 printf("The following port(s) failed to bind:\n");
590                 printf("Hint: Try using a public IP instead of blank or *\n\n");
591                 int j = 1;
592                 for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
593                 {
594                         printf("%d.\tAddress: %s\tReason: %s\n", j, i->first.empty() ? "<all>" : i->first.c_str(), i->second.c_str());
595                 }
596         }
597
598         printf("\nInspIRCd is now running as '%s'[%s] with %d max open sockets\n",
599                 Config->ServerName.c_str(),Config->GetSID().c_str(), SE->GetMaxFds());
600
601 #ifndef WINDOWS
602         if (!Config->cmdline.nofork)
603         {
604                 if (kill(getppid(), SIGTERM) == -1)
605                 {
606                         printf("Error killing parent process: %s\n",strerror(errno));
607                         Logs->Log("STARTUP", DEFAULT, "Error killing parent process: %s",strerror(errno));
608                 }
609         }
610
611         /* Explicitly shut down stdio's stdin/stdout/stderr.
612          *
613          * The previous logic here was to only do this if stdio was connected to a controlling
614          * terminal.  However, we must do this always to avoid information leaks and other
615          * problems related to stdio.
616          *
617          * The only exception is if we are in debug mode.
618          *
619          *    -- nenolod
620          */
621         if ((!do_nofork) && (!do_testsuite) && (!Config->cmdline.forcedebug))
622         {
623                 int fd;
624
625                 fclose(stdin);
626                 fclose(stderr);
627                 fclose(stdout);
628
629                 fd = open("/dev/null", O_RDWR);
630                 if (dup2(fd, 0) < 0)
631                         Logs->Log("STARTUP", DEFAULT, "Failed to dup /dev/null to stdin.");
632                 if (dup2(fd, 1) < 0)
633                         Logs->Log("STARTUP", DEFAULT, "Failed to dup /dev/null to stdout.");
634                 if (dup2(fd, 2) < 0)
635                         Logs->Log("STARTUP", DEFAULT, "Failed to dup /dev/null to stderr.");
636                 close(fd);
637         }
638         else
639         {
640                 Logs->Log("STARTUP", DEFAULT,"Keeping pseudo-tty open as we are running in the foreground.");
641         }
642 #else
643         WindowsIPC = new IPC;
644         if(!Config->cmdline.nofork)
645         {
646                 WindowsForkKillOwner();
647                 FreeConsole();
648         }
649         /* Set win32 service as running, if we are running as a service */
650         SetServiceRunning();
651 #endif
652
653         Logs->Log("STARTUP", DEFAULT, "Startup complete as '%s'[%s], %d max open sockets", Config->ServerName.c_str(),Config->GetSID().c_str(), SE->GetMaxFds());
654
655 #ifndef WIN32
656         std::string SetUser = Config->ConfValue("security")->getString("runasuser");
657         std::string SetGroup = Config->ConfValue("security")->getString("runasgroup");
658         if (!SetGroup.empty())
659         {
660                 int ret;
661
662                 // setgroups
663                 ret = setgroups(0, NULL);
664
665                 if (ret == -1)
666                 {
667                         this->Logs->Log("SETGROUPS", DEFAULT, "setgroups() failed (wtf?): %s", strerror(errno));
668                         this->QuickExit(0);
669                 }
670
671                 // setgid
672                 struct group *g;
673
674                 errno = 0;
675                 g = getgrnam(SetGroup.c_str());
676
677                 if (!g)
678                 {
679                         this->Logs->Log("SETGUID", DEFAULT, "getgrnam() failed (bad user?): %s", strerror(errno));
680                         this->QuickExit(0);
681                 }
682
683                 ret = setgid(g->gr_gid);
684
685                 if (ret == -1)
686                 {
687                         this->Logs->Log("SETGUID", DEFAULT, "setgid() failed (bad user?): %s", strerror(errno));
688                         this->QuickExit(0);
689                 }
690         }
691
692         if (!SetUser.empty())
693         {
694                 // setuid
695                 struct passwd *u;
696
697                 errno = 0;
698                 u = getpwnam(SetUser.c_str());
699
700                 if (!u)
701                 {
702                         this->Logs->Log("SETGUID", DEFAULT, "getpwnam() failed (bad user?): %s", strerror(errno));
703                         this->QuickExit(0);
704                 }
705
706                 int ret = setuid(u->pw_uid);
707
708                 if (ret == -1)
709                 {
710                         this->Logs->Log("SETGUID", DEFAULT, "setuid() failed (bad user?): %s", strerror(errno));
711                         this->QuickExit(0);
712                 }
713         }
714 #endif
715
716         this->WritePID(Config->PID);
717 }
718
719 void InspIRCd::UpdateTime()
720 {
721 #ifdef HAS_CLOCK_GETTIME
722         clock_gettime(CLOCK_REALTIME, &TIME);
723 #else
724         struct timeval tv;
725         gettimeofday(&tv, NULL);
726         TIME.tv_sec = tv.tv_sec;
727         TIME.tv_nsec = tv.tv_usec * 1000;
728 #endif
729 }
730
731 int InspIRCd::Run()
732 {
733         /* See if we're supposed to be running the test suite rather than entering the mainloop */
734         if (Config->cmdline.TestSuite)
735         {
736                 TestSuite* ts = new TestSuite;
737                 delete ts;
738                 Exit(0);
739         }
740
741         UpdateTime();
742         time_t OLDTIME = TIME.tv_sec;
743
744         while (true)
745         {
746 #ifndef WIN32
747                 static rusage ru;
748 #else
749                 static time_t uptime;
750                 static struct tm * stime;
751                 static char window_title[100];
752 #endif
753
754                 /* Check if there is a config thread which has finished executing but has not yet been freed */
755                 if (this->ConfigThread && this->ConfigThread->IsDone())
756                 {
757                         /* Rehash has completed */
758                         this->Logs->Log("CONFIG",DEBUG,"Detected ConfigThread exiting, tidying up...");
759
760                         this->ConfigThread->Finish();
761
762                         ConfigThread->join();
763                         delete ConfigThread;
764                         ConfigThread = NULL;
765                 }
766
767                 UpdateTime();
768
769                 /* Run background module timers every few seconds
770                  * (the docs say modules shouldnt rely on accurate
771                  * timing using this event, so we dont have to
772                  * time this exactly).
773                  */
774                 if (TIME.tv_sec != OLDTIME)
775                 {
776                         OLDTIME = TIME.tv_sec;
777 #ifndef WIN32
778                         getrusage(RUSAGE_SELF, &ru);
779                         stats->LastSampled = TIME;
780                         stats->LastCPU = ru.ru_utime;
781 #else
782                         WindowsIPC->Check();
783 #endif
784
785                         /* Allow a buffer of two seconds drift on this so that ntpdate etc dont harass admins */
786                         if (TIME.tv_sec < OLDTIME - 2)
787                         {
788                                 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %lu secs.", (unsigned long)OLDTIME-TIME.tv_sec);
789                         }
790                         else if (TIME.tv_sec > OLDTIME + 2)
791                         {
792                                 SNO->WriteToSnoMask('d', "\002EH?!\002 -- Time is jumping FORWARDS! Clock skipped %lu secs.", (unsigned long)TIME.tv_sec - OLDTIME);
793                         }
794
795                         if ((TIME.tv_sec % 3600) == 0)
796                         {
797                                 this->RehashUsersAndChans();
798                                 FOREACH_MOD(I_OnGarbageCollect, OnGarbageCollect());
799                         }
800
801                         Timers->TickTimers(TIME.tv_sec);
802                         this->DoBackgroundUserStuff();
803
804                         if ((TIME.tv_sec % 5) == 0)
805                         {
806                                 FOREACH_MOD(I_OnBackgroundTimer,OnBackgroundTimer(TIME.tv_sec));
807                                 SNO->FlushSnotices();
808                         }
809                 }
810
811                 /* Call the socket engine to wait on the active
812                  * file descriptors. The socket engine has everything's
813                  * descriptors in its list... dns, modules, users,
814                  * servers... so its nice and easy, just one call.
815                  * This will cause any read or write events to be
816                  * dispatched to their handlers.
817                  */
818                 this->SE->DispatchTrialWrites();
819                 this->SE->DispatchEvents();
820
821                 /* if any users were quit, take them out */
822                 GlobalCulls.Apply();
823                 AtomicActions.Run();
824
825                 if (this->s_signal)
826                 {
827                         this->SignalHandler(s_signal);
828                         this->s_signal = 0;
829                 }
830         }
831
832         return 0;
833 }
834
835 /**********************************************************************************/
836
837 /**
838  * An ircd in five lines! bwahahaha. ahahahahaha. ahahah *cough*.
839  */
840
841 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
842  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
843  * registration timeout maximum seconds)
844  */
845 bool InspIRCd::AllModulesReportReady(LocalUser* user)
846 {
847         ModResult res;
848         FIRST_MOD_RESULT(OnCheckReady, res, (user));
849         return (res == MOD_RES_PASSTHRU);
850 }
851
852 void InspIRCd::SetSignal(int signal)
853 {
854         *mysig = signal;
855 }
856
857 /* On posix systems, the flow of the program starts right here, with
858  * ENTRYPOINT being a #define that defines main(). On Windows, ENTRYPOINT
859  * defines smain() and the real main() is in the service code under
860  * win32service.cpp. This allows the service control manager to control
861  * the process where we are running as a windows service.
862  */
863 ENTRYPOINT
864 {
865         new InspIRCd(argc, argv);
866         mysig = &ServerInstance->s_signal;
867         ServerInstance->Run();
868         delete ServerInstance;
869         return 0;
870 }