ermyth/src/main.C

/*
 * main.C: Initialisation routine.
 * Rights to this code are documented in doc/pod/license.pod.
 */

static char const rcsid[] = "$Id: main.C,v 1.4 2007-07-21 15:55:13 pippijn Exp $";

#include "atheme.h"
#include <ermyth/database.h>
#include <ermyth/module.h>
#include <account/kline.h>
#include <account/myuser.h>
#include <account/mynick.h>
#include <account/mychan.h>
#include "account.h"            // XXX: expire_check
#include "uplink.h"
#include "internal.h"
#include "datastream.h"
#include "authcookie.h"
#include "connection.h"
#include "confparse.h"
#include <ermyth/shstr.h>
#include <common/random.h>

extern char **environ;

/* *INDENT-OFF* */
static void
print_help (void)
{
  printf ("usage: %s [-dhnv] [-c conf] [-l logfile] [-p pidfile]\n\n"
          "-c <file>    Specify the config file\n"
          "-d           Start in debugging mode\n"
          "-h           Print this message and exit\n"
          "-l <file>    Specify the log file\n"
          "-n           Don't fork into the background (log screen + log file)\n"
          "-p <file>    Specify the pid file (will be overwritten)\n"
          "-v           Print version information and exit\n", me.execname);
}

static void
print_version (void)
{
  printf ("Ermyth IRC Services (" PACKAGE_NAME "-%s)\n"
          "Compiled %s, build %s\n\n"
          "Copyright © 2007 Pippijn van Steenhoven / The Ermyth Team\n"
          "Copyright © 2005-2007 Atheme Development Group\n"
          "Rights to this code are documented in doc/pod/license.pod.\n",
          version, creation, generation);
}
/* *INDENT-ON* */

static void
db_save (void *)
{
  backend->save ();
}

int
main (int argc, char *argv[], char *envp[])
{
  bool have_conf = false;
  bool have_log = false;
  char buf[32];
  int i, pid, r;
  FILE *pid_file;
  char const *pidfilename = RUNDIR "/" PACKAGE_NAME ".pid";
#ifdef HAVE_GETRLIMIT
  struct rlimit rlim;
#endif
  curr_uplink = NULL;
  me.argc = argc;
  me.argv = argv;
  me.execname = argv[0];

  /* Prepare gettext */
#ifdef ENABLE_NLS
  setlocale (LC_ALL, "");
  bindtextdomain (PACKAGE_NAME, LOCALEDIR);
  textdomain (PACKAGE_NAME);
#endif

  // set up shstr buckets
  std::vector<shentry *> *shstr_buckets = new std::vector<shentry *> [shstr::bucketcnt ()];
  shstr::initbuckets (shstr_buckets);

  /* change to our local directory */
  if (chdir (PREFIX) < 0)
    {
      perror (PREFIX);
      return 20;
    }

#ifdef HAVE_GETRLIMIT
  /* it appears certian systems *ahem*linux*ahem*
   * don't dump cores by default, so we do this here.
   */
  if (!getrlimit (RLIMIT_CORE, &rlim))
    {
      rlim.rlim_cur = rlim.rlim_max;
      setrlimit (RLIMIT_CORE, &rlim);
    }
#endif

  /* do command-line options */
  while ((r = getopt (argc, argv, "c:dhl:np:v")) != -1)
    {
      switch (r)
        {
        case 'c':
          config_file = sstrdup (optarg);
          have_conf = true;
          break;
        case 'd':
          log_force = true;
          break;
        case 'h':
          print_help ();
          exit (EXIT_SUCCESS);
          break;
        case 'l':
          log_path = sstrdup (optarg);
          have_log = true;
          break;
        case 'n':
          runflags |= RF_LIVE;
          break;
        case 'p':
          pidfilename = optarg;
          break;
        case 'v':
          print_version ();
          exit (EXIT_SUCCESS);
          break;
        default:
          printf ("usage: %s [-dhnv] [-c conf] [-l logfile] [-p pidfile]\n", me.execname);
          exit (EXIT_SUCCESS);
          break;
        }
    }

  if (have_conf == false)
    config_file = sstrdup (SYSCONFDIR "/" PACKAGE_NAME ".conf");

  if (have_log == false)
    log_path = sstrdup (LOGDIR "/" PACKAGE_NAME ".log");

  cold_start = true;

  runflags |= RF_STARTING;

  me.start = time_t (now ());
  NOW = me.start;
  init_gen_rand (NOW);
  srand (gen_rand32 ());
  me.execname = argv[0];

  /* set signal handlers */
  init_signal_handlers ();

  /* open log */
  log_open ();
  
  printf ("%s: version " PACKAGE_NAME "-%s\n", me.execname, version);
  
  /* check for pid file */
  if ((pid_file = fopen (pidfilename, "r")))
    {
      if (fgets (buf, 32, pid_file))
        {
          pid = atoi (buf);
          
          if (!kill (pid, 0))
            {
              fprintf (stderr, "%s: daemon is already running\n", me.execname);
              exit (EXIT_FAILURE);
            }
        }
      
      fclose (pid_file);
    }
  
#if HAVE_UMASK
  /* file creation mask */
  umask (077);
#endif
  
  event_init ();
  init_dlink_nodes ();
  init_netio ();
  init_socket_queues ();
  
  init_nodes ();
  init_newconf ();
  servtree_init ();
  init_ircpacket ();
  
  conf_init ();
  if (!conf_parse (config_file))
    {
      slog (LG_ERROR, "Error loading config file %s, aborting", config_file);
      exit (EXIT_FAILURE);
    }
  
  authcookie_init ();
  common_ctcp_init ();
  update_chanacs_flags ();
  
  if (!database::handler::loaded)
    {
      fprintf (stderr, "%s: no backend loaded, see your configuration file.\n", me.execname);
      exit (EXIT_FAILURE);
    }
  
  /* check our config file */
  if (!conf_check ())
    exit (EXIT_FAILURE);
  
  /* we've done the critical startup steps now */
  cold_start = false;
  
  /* load our db */
  if (database::handler::loaded)
    backend->load ();
  else
    {
      /* XXX: We should have bailed by now! --nenolod */
      fprintf (stderr, "%s: no backend loaded, see your configuration file.\n", me.execname);
      exit (EXIT_FAILURE);
    }
  db_check ();
  
#ifdef HAVE_FORK
  /* fork into the background */
  if (!(runflags & RF_LIVE))
    {
      close (0);
      if (open ("/dev/null", O_RDWR) != 0)
        {
          fprintf (stderr, "%s: unable to open /dev/null??\n", me.execname);
          exit (EXIT_FAILURE);
        }
      if ((i = fork ()) < 0)
        {
          fprintf (stderr, "%s: can't fork into the background\n", me.execname);
          exit (EXIT_FAILURE);
        }
      
      /* parent */
      else if (i != 0)
        {
          printf ("%s: pid %d\n", me.execname, i);
          printf ("%s: running in background mode from " PREFIX "\n", me.execname);
          exit (EXIT_SUCCESS);
        }
      
      /* parent is gone, just us now */
      if (setsid () < 0)
        {
          fprintf (stderr, "%s: unable to create new session\n", me.execname);
          exit (EXIT_FAILURE);
        }
      dup2 (0, 1);
      dup2 (0, 2);
    }
  else
    {
      printf ("%s: pid %d\n", me.execname, getpid ());
      printf ("%s: running in foreground mode from %s\n", me.execname, PREFIX);
    }
#else
  printf ("%s: running in foreground mode from %s\n", me.execname, PREFIX);
#endif
  
#ifdef HAVE_GETPID
  /* write pid */
  if ((pid_file = fopen (pidfilename, "w")))
    {
      fprintf (pid_file, "%d\n", getpid ());
      fclose (pid_file);
    }
  else
    {
      fprintf (stderr, "%s: unable to write pid file\n", me.execname);
      exit (EXIT_FAILURE);
    }
#endif
  /* no longer starting */
  runflags &= ~RF_STARTING;
  
  /* we probably have a few open already... */
  me.maxfd = 3;
  
  /* DB commit interval is configurable */
  event_add ("db_save", db_save, NULL, config_options.commit_interval);
  
  /* check expires every hour */
  event_add ("expire_check", expire_check, NULL, 3600);
  
  /* check kline expires every minute */
  event_add ("kline_expire", kline_expire, NULL, 60);
  
  /* check authcookie expires every ten minutes */
  event_add ("authcookie_expire", authcookie_expire, NULL, 600);
  
  me.connected = false;
  uplink_connect ();

  /* main loop */
  io_loop ();
  
  /* we're shutting down */
  backend->save ();
  if (chansvs.me != NULL && chansvs.me->me != NULL)
    phandler->quit_sts (chansvs.me->me, "shutting down");
  
  remove (pidfilename);
  errno = 0;
  if (curr_uplink != NULL && curr_uplink->conn != NULL)
    sendq_flush (curr_uplink->conn);
  connection_close_all ();

  me.connected = false;
  
  /* should we restart? */
  if (runflags & RF_RESTART)
    {
      slog (LG_INFO, "main(): restarting");

#ifdef HAVE_EXECVE
      execve (me.execname, argv, envp);
#endif
    }
  
  slog (LG_INFO, "main(): shutting down");

  /* free used memory */
  shstr::cleanup ();
  modules::cleanup ();
  mychan_cleanup ();
  mynick_cleanup ();
  myuser_cleanup ();
  delete phandler;
  
  log_shutdown ();

  return 0;
}
Revision:	1.5
Committed:	Tue Aug 28 17:08:12 2007 UTC (16 years, 9 months ago) by pippijn
Content type:	text/plain
Branch:	MAIN
Changes since 1.4:	+88 -87 lines
Log Message:	- changed name - updated the example config to the new system - added more documentation - enhanced documentation generators - added a link to the pdf to the website - added an RSS feed generator - transitioned hooks to c++ callbacks - did various merges with upstream along the way - added const where appropriate - removed the old block allocator - fixed most memory leaks - transitioned some dictionaries to std::map - transitioned some lists to std::vector - made some free functions members where appropriate - renamed string to dynstr and added a static string ststr - use NOW instead of time (NULL) if possible - completely reworked database backends, crypto handlers and protocol handlers to use an object factory - removed the old module system. ermyth does not do any dynamic loading anymore - fixed most of the build system - reworked how protocol commands work
#	User	Rev	Content
1	pippijn	1.1	/*
2			* main.C: Initialisation routine.
3	pippijn	1.2	* Rights to this code are documented in doc/pod/license.pod.
4	pippijn	1.1	*/
5
6	pippijn	1.5	static char const rcsid[] = "$Id: main.C,v 1.4 2007-07-21 15:55:13 pippijn Exp $";
7	pippijn	1.1
8			#include "atheme.h"
9	pippijn	1.5	#include <ermyth/database.h>
10			#include <ermyth/module.h>
11	pippijn	1.1	#include <account/kline.h>
12	pippijn	1.5	#include <account/myuser.h>
13			#include <account/mynick.h>
14			#include <account/mychan.h>
15			#include "account.h" // XXX: expire_check
16	pippijn	1.1	#include "uplink.h"
17			#include "internal.h"
18			#include "datastream.h"
19			#include "authcookie.h"
20			#include "connection.h"
21			#include "confparse.h"
22	pippijn	1.5	#include <ermyth/shstr.h>
23			#include <common/random.h>
24
25			extern char **environ;
26	pippijn	1.1
27			/* INDENT-OFF */
28			static void
29			print_help (void)
30			{
31			printf ("usage: %s [-dhnv] [-c conf] [-l logfile] [-p pidfile]\n\n"
32			"-c <file> Specify the config file\n"
33			"-d Start in debugging mode\n"
34			"-h Print this message and exit\n"
35			"-l <file> Specify the log file\n"
36			"-n Don't fork into the background (log screen + log file)\n"
37			"-p <file> Specify the pid file (will be overwritten)\n"
38			"-v Print version information and exit\n", me.execname);
39			}
40
41			static void
42			print_version (void)
43			{
44			printf ("Ermyth IRC Services (" PACKAGE_NAME "-%s)\n"
45			"Compiled %s, build %s\n\n"
46			"Copyright © 2007 Pippijn van Steenhoven / The Ermyth Team\n"
47			"Copyright © 2005-2007 Atheme Development Group\n"
48	pippijn	1.2	"Rights to this code are documented in doc/pod/license.pod.\n",
49	pippijn	1.1	version, creation, generation);
50			}
51			/* INDENT-ON */
52
53			static void
54	pippijn	1.5	db_save (void *)
55	pippijn	1.1	{
56	pippijn	1.5	backend->save ();
57	pippijn	1.1	}
58
59			int
60	pippijn	1.4	main (int argc, char argv[], char envp[])
61	pippijn	1.1	{
62			bool have_conf = false;
63			bool have_log = false;
64			char buf[32];
65			int i, pid, r;
66			FILE *pid_file;
67	pippijn	1.5	char const *pidfilename = RUNDIR "/" PACKAGE_NAME ".pid";
68	pippijn	1.1	#ifdef HAVE_GETRLIMIT
69			struct rlimit rlim;
70			#endif
71			curr_uplink = NULL;
72			me.argc = argc;
73			me.argv = argv;
74			me.execname = argv[0];
75
76			/* Prepare gettext */
77			#ifdef ENABLE_NLS
78			setlocale (LC_ALL, "");
79			bindtextdomain (PACKAGE_NAME, LOCALEDIR);
80			textdomain (PACKAGE_NAME);
81			#endif
82
83	pippijn	1.5	// set up shstr buckets
84			std::vector<shentry > shstr_buckets = new std::vector<shentry *> [shstr::bucketcnt ()];
85			shstr::initbuckets (shstr_buckets);
86
87	pippijn	1.1	/* change to our local directory */
88			if (chdir (PREFIX) < 0)
89			{
90			perror (PREFIX);
91			return 20;
92			}
93
94			#ifdef HAVE_GETRLIMIT
95			/* it appears certian systems ahemlinuxahem
96			* don't dump cores by default, so we do this here.
97			*/
98			if (!getrlimit (RLIMIT_CORE, &rlim))
99			{
100			rlim.rlim_cur = rlim.rlim_max;
101			setrlimit (RLIMIT_CORE, &rlim);
102			}
103			#endif
104
105			/* do command-line options */
106			while ((r = getopt (argc, argv, "c:dhl:np:v")) != -1)
107			{
108			switch (r)
109			{
110			case 'c':
111			config_file = sstrdup (optarg);
112			have_conf = true;
113			break;
114			case 'd':
115			log_force = true;
116			break;
117			case 'h':
118			print_help ();
119			exit (EXIT_SUCCESS);
120			break;
121			case 'l':
122			log_path = sstrdup (optarg);
123			have_log = true;
124			break;
125			case 'n':
126			runflags \|= RF_LIVE;
127			break;
128			case 'p':
129			pidfilename = optarg;
130			break;
131			case 'v':
132			print_version ();
133			exit (EXIT_SUCCESS);
134			break;
135			default:
136			printf ("usage: %s [-dhnv] [-c conf] [-l logfile] [-p pidfile]\n", me.execname);
137			exit (EXIT_SUCCESS);
138			break;
139			}
140			}
141
142			if (have_conf == false)
143			config_file = sstrdup (SYSCONFDIR "/" PACKAGE_NAME ".conf");
144
145			if (have_log == false)
146			log_path = sstrdup (LOGDIR "/" PACKAGE_NAME ".log");
147
148			cold_start = true;
149
150			runflags \|= RF_STARTING;
151
152	pippijn	1.5	me.start = time_t (now ());
153	pippijn	1.1	NOW = me.start;
154	pippijn	1.5	init_gen_rand (NOW);
155			srand (gen_rand32 ());
156	pippijn	1.1	me.execname = argv[0];
157
158			/* set signal handlers */
159			init_signal_handlers ();
160
161			/* open log */
162			log_open ();
163	pippijn	1.5
164	pippijn	1.1	printf ("%s: version " PACKAGE_NAME "-%s\n", me.execname, version);
165	pippijn	1.5
166	pippijn	1.1	/* check for pid file */
167			if ((pid_file = fopen (pidfilename, "r")))
168			{
169			if (fgets (buf, 32, pid_file))
170	pippijn	1.5	{
171			pid = atoi (buf);
172
173			if (!kill (pid, 0))
174			{
175			fprintf (stderr, "%s: daemon is already running\n", me.execname);
176			exit (EXIT_FAILURE);
177			}
178			}
179
180	pippijn	1.1	fclose (pid_file);
181			}
182	pippijn	1.5
183	pippijn	1.1	#if HAVE_UMASK
184			/* file creation mask */
185			umask (077);
186			#endif
187	pippijn	1.5
188	pippijn	1.1	event_init ();
189			init_dlink_nodes ();
190			init_netio ();
191			init_socket_queues ();
192	pippijn	1.5
193	pippijn	1.1	init_nodes ();
194			init_newconf ();
195			servtree_init ();
196			init_ircpacket ();
197	pippijn	1.5
198	pippijn	1.1	conf_init ();
199			if (!conf_parse (config_file))
200			{
201			slog (LG_ERROR, "Error loading config file %s, aborting", config_file);
202			exit (EXIT_FAILURE);
203			}
204	pippijn	1.5
205	pippijn	1.1	authcookie_init ();
206			common_ctcp_init ();
207			update_chanacs_flags ();
208	pippijn	1.5
209			if (!database::handler::loaded)
210	pippijn	1.1	{
211	pippijn	1.5	fprintf (stderr, "%s: no backend loaded, see your configuration file.\n", me.execname);
212	pippijn	1.1	exit (EXIT_FAILURE);
213			}
214	pippijn	1.5
215	pippijn	1.1	/* check our config file */
216			if (!conf_check ())
217			exit (EXIT_FAILURE);
218	pippijn	1.5
219	pippijn	1.1	/* we've done the critical startup steps now */
220			cold_start = false;
221	pippijn	1.5
222	pippijn	1.1	/* load our db */
223	pippijn	1.5	if (database::handler::loaded)
224			backend->load ();
225	pippijn	1.1	else
226			{
227			/* XXX: We should have bailed by now! --nenolod */
228	pippijn	1.5	fprintf (stderr, "%s: no backend loaded, see your configuration file.\n", me.execname);
229	pippijn	1.1	exit (EXIT_FAILURE);
230			}
231			db_check ();
232	pippijn	1.5
233	pippijn	1.1	#ifdef HAVE_FORK
234			/* fork into the background */
235			if (!(runflags & RF_LIVE))
236			{
237			close (0);
238			if (open ("/dev/null", O_RDWR) != 0)
239	pippijn	1.5	{
240			fprintf (stderr, "%s: unable to open /dev/null??\n", me.execname);
241			exit (EXIT_FAILURE);
242			}
243	pippijn	1.1	if ((i = fork ()) < 0)
244	pippijn	1.5	{
245			fprintf (stderr, "%s: can't fork into the background\n", me.execname);
246			exit (EXIT_FAILURE);
247			}
248
249	pippijn	1.1	/* parent */
250			else if (i != 0)
251	pippijn	1.5	{
252			printf ("%s: pid %d\n", me.execname, i);
253			printf ("%s: running in background mode from " PREFIX "\n", me.execname);
254			exit (EXIT_SUCCESS);
255			}
256
257	pippijn	1.1	/* parent is gone, just us now */
258			if (setsid () < 0)
259	pippijn	1.5	{
260			fprintf (stderr, "%s: unable to create new session\n", me.execname);
261			exit (EXIT_FAILURE);
262			}
263	pippijn	1.1	dup2 (0, 1);
264			dup2 (0, 2);
265			}
266			else
267			{
268			printf ("%s: pid %d\n", me.execname, getpid ());
269			printf ("%s: running in foreground mode from %s\n", me.execname, PREFIX);
270			}
271			#else
272			printf ("%s: running in foreground mode from %s\n", me.execname, PREFIX);
273			#endif
274	pippijn	1.5
275	pippijn	1.1	#ifdef HAVE_GETPID
276			/* write pid */
277			if ((pid_file = fopen (pidfilename, "w")))
278			{
279			fprintf (pid_file, "%d\n", getpid ());
280			fclose (pid_file);
281			}
282			else
283			{
284			fprintf (stderr, "%s: unable to write pid file\n", me.execname);
285			exit (EXIT_FAILURE);
286			}
287			#endif
288			/* no longer starting */
289			runflags &= ~RF_STARTING;
290	pippijn	1.5
291	pippijn	1.1	/* we probably have a few open already... */
292			me.maxfd = 3;
293	pippijn	1.5
294	pippijn	1.1	/* DB commit interval is configurable */
295			event_add ("db_save", db_save, NULL, config_options.commit_interval);
296	pippijn	1.5
297	pippijn	1.1	/* check expires every hour */
298			event_add ("expire_check", expire_check, NULL, 3600);
299	pippijn	1.5
300	pippijn	1.1	/* check kline expires every minute */
301			event_add ("kline_expire", kline_expire, NULL, 60);
302	pippijn	1.5
303	pippijn	1.1	/* check authcookie expires every ten minutes */
304			event_add ("authcookie_expire", authcookie_expire, NULL, 600);
305	pippijn	1.5
306	pippijn	1.1	me.connected = false;
307			uplink_connect ();
308
309			/* main loop */
310			io_loop ();
311	pippijn	1.5
312	pippijn	1.1	/* we're shutting down */
313	pippijn	1.5	backend->save ();
314	pippijn	1.1	if (chansvs.me != NULL && chansvs.me->me != NULL)
315	pippijn	1.5	phandler->quit_sts (chansvs.me->me, "shutting down");
316
317	pippijn	1.1	remove (pidfilename);
318			errno = 0;
319			if (curr_uplink != NULL && curr_uplink->conn != NULL)
320			sendq_flush (curr_uplink->conn);
321			connection_close_all ();
322
323			me.connected = false;
324	pippijn	1.5
325	pippijn	1.1	/* should we restart? */
326			if (runflags & RF_RESTART)
327			{
328			slog (LG_INFO, "main(): restarting");
329
330			#ifdef HAVE_EXECVE
331	pippijn	1.4	execve (me.execname, argv, envp);
332	pippijn	1.1	#endif
333			}
334	pippijn	1.5
335	pippijn	1.1	slog (LG_INFO, "main(): shutting down");
336
337	pippijn	1.5	/* free used memory */
338			shstr::cleanup ();
339			modules::cleanup ();
340			mychan_cleanup ();
341			mynick_cleanup ();
342			myuser_cleanup ();
343			delete phandler;
344
345	pippijn	1.1	log_shutdown ();
346
347			return 0;
348			}