trunk/src/ircd.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2017 ircd-hybrid development team
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
 *  USA
 */

/*! \file ircd.c
 * \brief Starts up and runs the ircd.
 * \version $Id$
 */

#include "stdinc.h"
#include "user.h"
#include "list.h"
#include "ircd.h"
#include "channel.h"
#include "channel_mode.h"
#include "client.h"
#include "event.h"
#include "fdlist.h"
#include "hash.h"
#include "id.h"
#include "irc_string.h"
#include "ircd_signal.h"
#include "motd.h"
#include "conf.h"
#include "hostmask.h"
#include "parse.h"
#include "res.h"
#include "restart.h"
#include "rng_mt.h"
#include "auth.h"
#include "s_bsd.h"
#include "log.h"
#include "server.h"
#include "send.h"
#include "whowas.h"
#include "modules.h"
#include "memory.h"
#include "mempool.h"
#include "ircd_getopt.h"
#include "watch.h"
#include "conf_db.h"
#include "conf_class.h"
#include "ipcache.h"
#include "isupport.h"
#include "userhost.h"


#ifdef HAVE_LIBGEOIP
GeoIP *GeoIPv4_ctx;
GeoIP *GeoIPv6_ctx;
#endif

struct SetOptions GlobalSetOptions;  /* /quote set variables */
struct Counter Count;
struct ServerState_t server_state;
struct ServerStatistics ServerStats;
struct ServerTime SystemTime;
struct Connection meConnection;  /* That's also part of me */
struct Client me = { .connection = &meConnection };  /* That's me */

char **myargv;
const char *logFileName = LPATH;
const char *pidFileName = PPATH;

unsigned int dorehash;
unsigned int doremotd;

static int printVersion;

static struct lgetopt myopts[] =
{
  { "configfile", &ConfigGeneral.configfile,
   STRING, "File to use for ircd.conf" },
  { "klinefile",  &ConfigGeneral.klinefile,
   STRING, "File to use for kline database" },
  { "dlinefile",  &ConfigGeneral.dlinefile,
   STRING, "File to use for dline database" },
  { "xlinefile",  &ConfigGeneral.xlinefile,
   STRING, "File to use for xline database" },
  { "resvfile",   &ConfigGeneral.resvfile,
   STRING, "File to use for resv database" },
  { "logfile",    &logFileName,
   STRING, "File to use for ircd.log" },
  { "pidfile",    &pidFileName,
   STRING, "File to use for process ID" },
  { "foreground", &server_state.foreground,
   YESNO, "Run in foreground (don't detach)" },
  { "version",    &printVersion,
   YESNO, "Print version and exit" },
  { "help", NULL, USAGE, "Print this text" },
  { NULL, NULL, STRING, NULL },
};

static struct event event_cleanup_tklines =
{
  .name = "cleanup_tklines",
  .handler = cleanup_tklines,
  .when = CLEANUP_TKLINES_TIME
};

static struct event event_try_connections =
{
  .name = "try_connections",
  .handler = try_connections,
  .when = STARTUP_CONNECTIONS_TIME
};

static struct event event_comm_checktimeouts =
{
  .name = "comm_checktimeouts",
  .handler = comm_checktimeouts,
  .when = 1
};

static struct event event_save_all_databases =
{
  .name = "save_all_databases",
  .handler = save_all_databases,
  .when = DATABASE_UPDATE_TIMEOUT
};

struct event event_write_links_file =
{
  .name = "write_links_file",
  .handler = write_links_file,
};


void
set_time(void)
{
  struct timeval newtime = { .tv_sec = 0, .tv_usec = 0 };

  if (gettimeofday(&newtime, NULL) == -1)
  {
    char buf[IRCD_BUFSIZE];

    snprintf(buf, sizeof(buf), "Clock failure, TS can be corrupted: %s",
             strerror(errno));
    server_die(buf, SERVER_SHUTDOWN);
  }

  if ((uintmax_t)newtime.tv_sec < CurrentTime)
  {
    ilog(LOG_TYPE_IRCD, "System clock is running backwards - (%ju < %ju)",
         (uintmax_t)newtime.tv_sec, CurrentTime);
    sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE,
                         "System clock is running backwards - (%ju < %ju)",
                         (uintmax_t)newtime.tv_sec, CurrentTime);
    event_set_back_events(CurrentTime - (uintmax_t)newtime.tv_sec);
  }

  SystemTime.tv_sec = newtime.tv_sec;
  SystemTime.tv_usec = newtime.tv_usec;
}

static void
io_loop(void)
{
  while (1)
  {
    if (listing_client_list.head)
    {
      dlink_node *node = NULL, *node_next = NULL;
      DLINK_FOREACH_SAFE(node, node_next, listing_client_list.head)
        safe_list_channels(node->data, 0);
    }

    /* Run pending events */
    event_run();

    comm_select();
    exit_aborted_clients();
    free_exited_clients();

    /* Check to see whether we have to rehash the configuration. */
    if (dorehash)
    {
      conf_rehash(1);
      dorehash = 0;
    }

    if (doremotd)
    {
      motd_recache();
      sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE,
                           "Got signal SIGUSR1, reloading motd file(s)");
      doremotd = 0;
    }
  }
}

/* initalialize_global_set_options()
 *
 * inputs       - none
 * output       - none
 * side effects - This sets all global set options needed
 */
static void
initialize_global_set_options(void)
{
  GlobalSetOptions.maxclients = ConfigServerInfo.default_max_clients;
  GlobalSetOptions.autoconn = 1;
  GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
  GlobalSetOptions.spam_num = MAX_JOIN_LEAVE_COUNT;
  GlobalSetOptions.floodcount = ConfigGeneral.default_floodcount;
  GlobalSetOptions.floodtime = ConfigGeneral.default_floodtime;
  GlobalSetOptions.joinfloodcount = ConfigChannel.default_join_flood_count;
  GlobalSetOptions.joinfloodtime = ConfigChannel.default_join_flood_time;
  GlobalSetOptions.ident_timeout = IDENT_TIMEOUT;
}

/* write_pidfile()
 *
 * inputs       - filename+path of pid file
 * output       - NONE
 * side effects - write the pid of the ircd to filename
 */
static void
write_pidfile(const char *filename)
{
  FILE *fb;

  if ((fb = fopen(filename, "w")))
  {
    char buf[IRCD_BUFSIZE];
    unsigned int pid = (unsigned int)getpid();

    snprintf(buf, sizeof(buf), "%u\n", pid);

    if (fputs(buf, fb) == -1)
      ilog(LOG_TYPE_IRCD, "Error writing to pid file %s: %s",
           filename, strerror(errno));

    fclose(fb);
  }
  else
    ilog(LOG_TYPE_IRCD, "Error opening pid file %s: %s",
         filename, strerror(errno));
}

/* check_pidfile()
 *
 * inputs       - filename+path of pid file
 * output       - none
 * side effects - reads pid from pidfile and checks if ircd is in process
 *                list. if it is, gracefully exits
 * -kre
 */
static void
check_pidfile(const char *filename)
{
  FILE *fb;
  char buf[IRCD_BUFSIZE];

  if ((fb = fopen(filename, "r")))
  {
    if (!fgets(buf, 20, fb))
      ilog(LOG_TYPE_IRCD, "Error reading from pid file %s: %s",
           filename, strerror(errno));
    else
    {
      pid_t pid = atoi(buf);

      if (!kill(pid, 0))
      {
        /* log(L_ERROR, "Server is already running"); */
        printf("ircd: daemon is already running\n");
        exit(EXIT_FAILURE);
      }
    }

    fclose(fb);
  }
  else if (errno != ENOENT)
    ilog(LOG_TYPE_IRCD, "Error opening pid file %s: %s",
         filename, strerror(errno));
}

/* setup_corefile()
 *
 * inputs       - nothing
 * output       - nothing
 * side effects - setups corefile to system limits.
 * -kre
 */
static void
setup_corefile(void)
{
  struct rlimit rlim; /* resource limits */

  /* Set corefilesize to maximum */
  if (!getrlimit(RLIMIT_CORE, &rlim))
  {
    rlim.rlim_cur = rlim.rlim_max;
    setrlimit(RLIMIT_CORE, &rlim);
  }
}

/*
 * print_startup - print startup information
 */
static void
print_startup(int pid)
{
  printf("ircd: version %s(%s)\n", ircd_version, serno);
  printf("ircd: pid %d\n", pid);
  printf("ircd: running in %s mode from %s\n", !server_state.foreground ? "background"
         : "foreground", ConfigGeneral.dpath);
}

static void
make_daemon(void)
{
  int pid;

  if ((pid = fork()) < 0)
  {
    perror("fork");
    exit(EXIT_FAILURE);
  }
  else if (pid > 0)
  {
    print_startup(pid);
    exit(EXIT_SUCCESS);
  }

  setsid();
}

int
main(int argc, char *argv[])
{
  /* Check to see if the user is running us as root, which is a nono */
  if (!geteuid())
  {
    fprintf(stderr, "ERROR: This server won't run as root/superuser\n");
    return -1;
  }

  /* Setup corefile size immediately after boot -kre */
  setup_corefile();

  /* Save server boot time right away, so getrusage works correctly */
  set_time();

  /* It's not random, but it ought to be a little harder to guess */
  init_genrand(SystemTime.tv_sec ^ (SystemTime.tv_usec | (getpid() << 20)));

  ConfigGeneral.dpath      = DPATH;
  ConfigGeneral.spath      = SPATH;
  ConfigGeneral.mpath      = MPATH;
  ConfigGeneral.configfile = CPATH;    /* Server configuration file */
  ConfigGeneral.klinefile  = KPATH;    /* Server kline file         */
  ConfigGeneral.xlinefile  = XPATH;    /* Server xline file         */
  ConfigGeneral.dlinefile  = DLPATH;   /* dline file                */
  ConfigGeneral.resvfile   = RESVPATH; /* resv file                 */

  myargv = argv;
  umask(077);  /* umask 077: u=rwx,g=,o= */

  parseargs(&argc, &argv, myopts);

  if (printVersion)
  {
    printf("ircd: version %s(%s)\n", ircd_version, serno);
    exit(EXIT_SUCCESS);
  }

  if (chdir(ConfigGeneral.dpath))
  {
    perror("chdir");
    exit(EXIT_FAILURE);
  }

  if (!server_state.foreground)
  {
    make_daemon();
    close_standard_fds(); /* this needs to be before netio_init()! */
  }
  else
    print_startup(getpid());

  setup_signals();

  /* We need this to initialise the fd array before anything else */
  fdlist_init();
  log_set_file(LOG_TYPE_IRCD, 0, logFileName);

  netio_init();         /* This needs to be setup early ! -- adrian */
  tls_init();

  /* Check if there is pidfile and daemon already running */
  check_pidfile(pidFileName);

  mp_pool_init();
  init_dlink_nodes();
  isupport_init();
  dbuf_init();
  hash_init();
  userhost_init();
  ipcache_init();
  client_init();
  class_init();
  whowas_init();
  watch_init();
  auth_init();          /* Initialise the auth code */
  resolver_init();      /* Needs to be setup before the io loop */
  modules_init();
  read_conf_files(1);   /* cold start init conf files */
  server_capab_init();  /* Set up default_server_capabs */
  initialize_global_set_options();  /* Has to be called after read_conf_files() */
  channel_init();
  channel_mode_init();
  read_links_file();
  motd_init();
  user_modes_init();

  if (EmptyString(ConfigServerInfo.name))
  {
    ilog(LOG_TYPE_IRCD, "ERROR: No server name specified in serverinfo block.");
    exit(EXIT_FAILURE);
  }

  strlcpy(me.name, ConfigServerInfo.name, sizeof(me.name));

  /* serverinfo {} description must exist.  If not, error out.*/
  if (EmptyString(ConfigServerInfo.description))
  {
    ilog(LOG_TYPE_IRCD, "ERROR: No server description specified in serverinfo block.");
    exit(EXIT_FAILURE);
  }

  strlcpy(me.info, ConfigServerInfo.description, sizeof(me.info));

  if (EmptyString(ConfigServerInfo.sid))
  {
    ilog(LOG_TYPE_IRCD, "Generating server ID");
    generate_sid();
  }
  else
    strlcpy(me.id, ConfigServerInfo.sid, sizeof(me.id));

  init_uid();

  me.from = &me;
  me.servptr = &me;
  me.connection->lasttime = CurrentTime;
  me.connection->since = CurrentTime;
  me.connection->firsttime = CurrentTime;

  SetMe(&me);
  make_server(&me);

  hash_add_id(&me);
  hash_add_client(&me);

  dlinkAdd(&me, &me.node, &global_server_list);

  load_kline_database(ConfigGeneral.klinefile);
  load_dline_database(ConfigGeneral.dlinefile);
  load_xline_database(ConfigGeneral.xlinefile);
  load_resv_database(ConfigGeneral.resvfile);

  load_all_modules(1);
  load_conf_modules();
  load_core_modules(1);

  write_pidfile(pidFileName);

  event_addish(&event_cleanup_tklines, NULL);

  /* We want try_connections to be called as soon as possible now! -- adrian */
  /* No, 'cause after a restart it would cause all sorts of nick collides */
  event_addish(&event_try_connections, NULL);

  /* Setup the timeout check. I'll shift it later :)  -- adrian */
  event_add(&event_comm_checktimeouts, NULL);

  event_addish(&event_save_all_databases, NULL);

  if (ConfigServerHide.flatten_links_delay && event_write_links_file.active == 0)
  {
    event_write_links_file.when = ConfigServerHide.flatten_links_delay;
    event_add(&event_write_links_file, NULL);
  }

  ilog(LOG_TYPE_IRCD, "Server Ready");
  io_loop();

  return 0;
}
Revision:	8089
Committed:	Wed Mar 29 12:22:47 2017 UTC (8 years, 5 months ago) by michael
Content type:	text/x-csrc
File size:	12888 byte(s)
Log Message:	- Cleanup channel mode table handling
#	Content
1	/*
2	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	*
4	* Copyright (c) 1997-2017 ircd-hybrid development team
5	*
6	* This program is free software; you can redistribute it and/or modify
7	* it under the terms of the GNU General Public License as published by
8	* the Free Software Foundation; either version 2 of the License, or
9	* (at your option) any later version.
10	*
11	* This program is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	* GNU General Public License for more details.
15	*
16	* You should have received a copy of the GNU General Public License
17	* along with this program; if not, write to the Free Software
18	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
19	* USA
20	*/
21
22	/*! \file ircd.c
23	* \brief Starts up and runs the ircd.
24	* \version $Id$
25	*/
26
27	#include "stdinc.h"
28	#include "user.h"
29	#include "list.h"
30	#include "ircd.h"
31	#include "channel.h"
32	#include "channel_mode.h"
33	#include "client.h"
34	#include "event.h"
35	#include "fdlist.h"
36	#include "hash.h"
37	#include "id.h"
38	#include "irc_string.h"
39	#include "ircd_signal.h"
40	#include "motd.h"
41	#include "conf.h"
42	#include "hostmask.h"
43	#include "parse.h"
44	#include "res.h"
45	#include "restart.h"
46	#include "rng_mt.h"
47	#include "auth.h"
48	#include "s_bsd.h"
49	#include "log.h"
50	#include "server.h"
51	#include "send.h"
52	#include "whowas.h"
53	#include "modules.h"
54	#include "memory.h"
55	#include "mempool.h"
56	#include "ircd_getopt.h"
57	#include "watch.h"
58	#include "conf_db.h"
59	#include "conf_class.h"
60	#include "ipcache.h"
61	#include "isupport.h"
62	#include "userhost.h"
63
64
65	#ifdef HAVE_LIBGEOIP
66	GeoIP *GeoIPv4_ctx;
67	GeoIP *GeoIPv6_ctx;
68	#endif
69
70	struct SetOptions GlobalSetOptions; /* /quote set variables */
71	struct Counter Count;
72	struct ServerState_t server_state;
73	struct ServerStatistics ServerStats;
74	struct ServerTime SystemTime;
75	struct Connection meConnection; /* That's also part of me */
76	struct Client me = { .connection = &meConnection }; /* That's me */
77
78	char **myargv;
79	const char *logFileName = LPATH;
80	const char *pidFileName = PPATH;
81
82	unsigned int dorehash;
83	unsigned int doremotd;
84
85	static int printVersion;
86
87	static struct lgetopt myopts[] =
88	{
89	{ "configfile", &ConfigGeneral.configfile,
90	STRING, "File to use for ircd.conf" },
91	{ "klinefile", &ConfigGeneral.klinefile,
92	STRING, "File to use for kline database" },
93	{ "dlinefile", &ConfigGeneral.dlinefile,
94	STRING, "File to use for dline database" },
95	{ "xlinefile", &ConfigGeneral.xlinefile,
96	STRING, "File to use for xline database" },
97	{ "resvfile", &ConfigGeneral.resvfile,
98	STRING, "File to use for resv database" },
99	{ "logfile", &logFileName,
100	STRING, "File to use for ircd.log" },
101	{ "pidfile", &pidFileName,
102	STRING, "File to use for process ID" },
103	{ "foreground", &server_state.foreground,
104	YESNO, "Run in foreground (don't detach)" },
105	{ "version", &printVersion,
106	YESNO, "Print version and exit" },
107	{ "help", NULL, USAGE, "Print this text" },
108	{ NULL, NULL, STRING, NULL },
109	};
110
111	static struct event event_cleanup_tklines =
112	{
113	.name = "cleanup_tklines",
114	.handler = cleanup_tklines,
115	.when = CLEANUP_TKLINES_TIME
116	};
117
118	static struct event event_try_connections =
119	{
120	.name = "try_connections",
121	.handler = try_connections,
122	.when = STARTUP_CONNECTIONS_TIME
123	};
124
125	static struct event event_comm_checktimeouts =
126	{
127	.name = "comm_checktimeouts",
128	.handler = comm_checktimeouts,
129	.when = 1
130	};
131
132	static struct event event_save_all_databases =
133	{
134	.name = "save_all_databases",
135	.handler = save_all_databases,
136	.when = DATABASE_UPDATE_TIMEOUT
137	};
138
139	struct event event_write_links_file =
140	{
141	.name = "write_links_file",
142	.handler = write_links_file,
143	};
144
145
146	void
147	set_time(void)
148	{
149	struct timeval newtime = { .tv_sec = 0, .tv_usec = 0 };
150
151	if (gettimeofday(&newtime, NULL) == -1)
152	{
153	char buf[IRCD_BUFSIZE];
154
155	snprintf(buf, sizeof(buf), "Clock failure, TS can be corrupted: %s",
156	strerror(errno));
157	server_die(buf, SERVER_SHUTDOWN);
158	}
159
160	if ((uintmax_t)newtime.tv_sec < CurrentTime)
161	{
162	ilog(LOG_TYPE_IRCD, "System clock is running backwards - (%ju < %ju)",
163	(uintmax_t)newtime.tv_sec, CurrentTime);
164	sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE,
165	"System clock is running backwards - (%ju < %ju)",
166	(uintmax_t)newtime.tv_sec, CurrentTime);
167	event_set_back_events(CurrentTime - (uintmax_t)newtime.tv_sec);
168	}
169
170	SystemTime.tv_sec = newtime.tv_sec;
171	SystemTime.tv_usec = newtime.tv_usec;
172	}
173
174	static void
175	io_loop(void)
176	{
177	while (1)
178	{
179	if (listing_client_list.head)
180	{
181	dlink_node node = NULL, node_next = NULL;
182	DLINK_FOREACH_SAFE(node, node_next, listing_client_list.head)
183	safe_list_channels(node->data, 0);
184	}
185
186	/* Run pending events */
187	event_run();
188
189	comm_select();
190	exit_aborted_clients();
191	free_exited_clients();
192
193	/* Check to see whether we have to rehash the configuration. */
194	if (dorehash)
195	{
196	conf_rehash(1);
197	dorehash = 0;
198	}
199
200	if (doremotd)
201	{
202	motd_recache();
203	sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE,
204	"Got signal SIGUSR1, reloading motd file(s)");
205	doremotd = 0;
206	}
207	}
208	}
209
210	/* initalialize_global_set_options()
211	*
212	* inputs - none
213	* output - none
214	* side effects - This sets all global set options needed
215	*/
216	static void
217	initialize_global_set_options(void)
218	{
219	GlobalSetOptions.maxclients = ConfigServerInfo.default_max_clients;
220	GlobalSetOptions.autoconn = 1;
221	GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
222	GlobalSetOptions.spam_num = MAX_JOIN_LEAVE_COUNT;
223	GlobalSetOptions.floodcount = ConfigGeneral.default_floodcount;
224	GlobalSetOptions.floodtime = ConfigGeneral.default_floodtime;
225	GlobalSetOptions.joinfloodcount = ConfigChannel.default_join_flood_count;
226	GlobalSetOptions.joinfloodtime = ConfigChannel.default_join_flood_time;
227	GlobalSetOptions.ident_timeout = IDENT_TIMEOUT;
228	}
229
230	/* write_pidfile()
231	*
232	* inputs - filename+path of pid file
233	* output - NONE
234	* side effects - write the pid of the ircd to filename
235	*/
236	static void
237	write_pidfile(const char *filename)
238	{
239	FILE *fb;
240
241	if ((fb = fopen(filename, "w")))
242	{
243	char buf[IRCD_BUFSIZE];
244	unsigned int pid = (unsigned int)getpid();
245
246	snprintf(buf, sizeof(buf), "%u\n", pid);
247
248	if (fputs(buf, fb) == -1)
249	ilog(LOG_TYPE_IRCD, "Error writing to pid file %s: %s",
250	filename, strerror(errno));
251
252	fclose(fb);
253	}
254	else
255	ilog(LOG_TYPE_IRCD, "Error opening pid file %s: %s",
256	filename, strerror(errno));
257	}
258
259	/* check_pidfile()
260	*
261	* inputs - filename+path of pid file
262	* output - none
263	* side effects - reads pid from pidfile and checks if ircd is in process
264	* list. if it is, gracefully exits
265	* -kre
266	*/
267	static void
268	check_pidfile(const char *filename)
269	{
270	FILE *fb;
271	char buf[IRCD_BUFSIZE];
272
273	if ((fb = fopen(filename, "r")))
274	{
275	if (!fgets(buf, 20, fb))
276	ilog(LOG_TYPE_IRCD, "Error reading from pid file %s: %s",
277	filename, strerror(errno));
278	else
279	{
280	pid_t pid = atoi(buf);
281
282	if (!kill(pid, 0))
283	{
284	/* log(L_ERROR, "Server is already running"); */
285	printf("ircd: daemon is already running\n");
286	exit(EXIT_FAILURE);
287	}
288	}
289
290	fclose(fb);
291	}
292	else if (errno != ENOENT)
293	ilog(LOG_TYPE_IRCD, "Error opening pid file %s: %s",
294	filename, strerror(errno));
295	}
296
297	/* setup_corefile()
298	*
299	* inputs - nothing
300	* output - nothing
301	* side effects - setups corefile to system limits.
302	* -kre
303	*/
304	static void
305	setup_corefile(void)
306	{
307	struct rlimit rlim; /* resource limits */
308
309	/* Set corefilesize to maximum */
310	if (!getrlimit(RLIMIT_CORE, &rlim))
311	{
312	rlim.rlim_cur = rlim.rlim_max;
313	setrlimit(RLIMIT_CORE, &rlim);
314	}
315	}
316
317	/*
318	* print_startup - print startup information
319	*/
320	static void
321	print_startup(int pid)
322	{
323	printf("ircd: version %s(%s)\n", ircd_version, serno);
324	printf("ircd: pid %d\n", pid);
325	printf("ircd: running in %s mode from %s\n", !server_state.foreground ? "background"
326	: "foreground", ConfigGeneral.dpath);
327	}
328
329	static void
330	make_daemon(void)
331	{
332	int pid;
333
334	if ((pid = fork()) < 0)
335	{
336	perror("fork");
337	exit(EXIT_FAILURE);
338	}
339	else if (pid > 0)
340	{
341	print_startup(pid);
342	exit(EXIT_SUCCESS);
343	}
344
345	setsid();
346	}
347
348	int
349	main(int argc, char *argv[])
350	{
351	/* Check to see if the user is running us as root, which is a nono */
352	if (!geteuid())
353	{
354	fprintf(stderr, "ERROR: This server won't run as root/superuser\n");
355	return -1;
356	}
357
358	/* Setup corefile size immediately after boot -kre */
359	setup_corefile();
360
361	/* Save server boot time right away, so getrusage works correctly */
362	set_time();
363
364	/* It's not random, but it ought to be a little harder to guess */
365	init_genrand(SystemTime.tv_sec ^ (SystemTime.tv_usec \| (getpid() << 20)));
366
367	ConfigGeneral.dpath = DPATH;
368	ConfigGeneral.spath = SPATH;
369	ConfigGeneral.mpath = MPATH;
370	ConfigGeneral.configfile = CPATH; /* Server configuration file */
371	ConfigGeneral.klinefile = KPATH; /* Server kline file */
372	ConfigGeneral.xlinefile = XPATH; /* Server xline file */
373	ConfigGeneral.dlinefile = DLPATH; /* dline file */
374	ConfigGeneral.resvfile = RESVPATH; /* resv file */
375
376	myargv = argv;
377	umask(077); /* umask 077: u=rwx,g=,o= */
378
379	parseargs(&argc, &argv, myopts);
380
381	if (printVersion)
382	{
383	printf("ircd: version %s(%s)\n", ircd_version, serno);
384	exit(EXIT_SUCCESS);
385	}
386
387	if (chdir(ConfigGeneral.dpath))
388	{
389	perror("chdir");
390	exit(EXIT_FAILURE);
391	}
392
393	if (!server_state.foreground)
394	{
395	make_daemon();
396	close_standard_fds(); /* this needs to be before netio_init()! */
397	}
398	else
399	print_startup(getpid());
400
401	setup_signals();
402
403	/* We need this to initialise the fd array before anything else */
404	fdlist_init();
405	log_set_file(LOG_TYPE_IRCD, 0, logFileName);
406
407	netio_init(); /* This needs to be setup early ! -- adrian */
408	tls_init();
409
410	/* Check if there is pidfile and daemon already running */
411	check_pidfile(pidFileName);
412
413	mp_pool_init();
414	init_dlink_nodes();
415	isupport_init();
416	dbuf_init();
417	hash_init();
418	userhost_init();
419	ipcache_init();
420	client_init();
421	class_init();
422	whowas_init();
423	watch_init();
424	auth_init(); /* Initialise the auth code */
425	resolver_init(); /* Needs to be setup before the io loop */
426	modules_init();
427	read_conf_files(1); /* cold start init conf files */
428	server_capab_init(); /* Set up default_server_capabs */
429	initialize_global_set_options(); /* Has to be called after read_conf_files() */
430	channel_init();
431	channel_mode_init();
432	read_links_file();
433	motd_init();
434	user_modes_init();
435
436	if (EmptyString(ConfigServerInfo.name))
437	{
438	ilog(LOG_TYPE_IRCD, "ERROR: No server name specified in serverinfo block.");
439	exit(EXIT_FAILURE);
440	}
441
442	strlcpy(me.name, ConfigServerInfo.name, sizeof(me.name));
443
444	/* serverinfo {} description must exist. If not, error out.*/
445	if (EmptyString(ConfigServerInfo.description))
446	{
447	ilog(LOG_TYPE_IRCD, "ERROR: No server description specified in serverinfo block.");
448	exit(EXIT_FAILURE);
449	}
450
451	strlcpy(me.info, ConfigServerInfo.description, sizeof(me.info));
452
453	if (EmptyString(ConfigServerInfo.sid))
454	{
455	ilog(LOG_TYPE_IRCD, "Generating server ID");
456	generate_sid();
457	}
458	else
459	strlcpy(me.id, ConfigServerInfo.sid, sizeof(me.id));
460
461	init_uid();
462
463	me.from = &me;
464	me.servptr = &me;
465	me.connection->lasttime = CurrentTime;
466	me.connection->since = CurrentTime;
467	me.connection->firsttime = CurrentTime;
468
469	SetMe(&me);
470	make_server(&me);
471
472	hash_add_id(&me);
473	hash_add_client(&me);
474
475	dlinkAdd(&me, &me.node, &global_server_list);
476
477	load_kline_database(ConfigGeneral.klinefile);
478	load_dline_database(ConfigGeneral.dlinefile);
479	load_xline_database(ConfigGeneral.xlinefile);
480	load_resv_database(ConfigGeneral.resvfile);
481
482	load_all_modules(1);
483	load_conf_modules();
484	load_core_modules(1);
485
486	write_pidfile(pidFileName);
487
488	event_addish(&event_cleanup_tklines, NULL);
489
490	/* We want try_connections to be called as soon as possible now! -- adrian */
491	/* No, 'cause after a restart it would cause all sorts of nick collides */
492	event_addish(&event_try_connections, NULL);
493
494	/* Setup the timeout check. I'll shift it later :) -- adrian */
495	event_add(&event_comm_checktimeouts, NULL);
496
497	event_addish(&event_save_all_databases, NULL);
498
499	if (ConfigServerHide.flatten_links_delay && event_write_links_file.active == 0)
500	{
501	event_write_links_file.when = ConfigServerHide.flatten_links_delay;
502	event_add(&event_write_links_file, NULL);
503	}
504
505	ilog(LOG_TYPE_IRCD, "Server Ready");
506	io_loop();
507
508	return 0;
509	}