trunk/src/ircd.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2020 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 "s_bsd.h"
#include "log.h"
#include "server.h"
#include "server_capab.h"
#include "send.h"
#include "modules.h"
#include "ircd_getopt.h"
#include "conf_db.h"
#include "conf_class.h"
#include "ipcache.h"
#include "isupport.h"
#include "patchlevel.h"
#include "serno.h"


struct SetOptions GlobalSetOptions;  /* /quote set variables */
struct Counter Count;
struct ServerState_t server_state;
struct ServerStatistics ServerStats;
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;

bool dorehash;
bool doremotd;

static bool 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,
   BOOLEAN, "Run in foreground (don't detach)" },
  { "version",    &printVersion,
   BOOLEAN, "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 = 5
};

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,
};


static void
io_loop(void)
{
  while (true)
  {
    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, false);
    }

    /* 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 == true)
    {
      conf_rehash(true);
      dorehash = false;
    }

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

/* 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 = true;
  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;
}

/* 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) == NULL)
      ilog(LOG_TYPE_IRCD, "Error reading from pid file %s: %s",
           filename, strerror(errno));
    else
    {
      pid_t pid = atoi(buf);

      if (kill(pid, 0) == 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) == 0)
  {
    rlim.rlim_cur = rlim.rlim_max;
    setrlimit(RLIMIT_CORE, &rlim);
  }
}

static void
setup_fdlimit(void)
{
  struct rlimit rlim; /* resource limits */

  if (getrlimit(RLIMIT_NOFILE, &rlim))
  {
    fprintf(stderr, "getrlimit: couldn't get maximum number of file descriptors: %s\n",
            strerror(errno));
    exit(EXIT_FAILURE);
  }

  if (rlim.rlim_max > 0xFFFF)
    rlim.rlim_max = 0xFFFF;
  rlim.rlim_cur = rlim.rlim_max;

  if (setrlimit(RLIMIT_NOFILE, &rlim) == 0)
    hard_fdlimit = rlim.rlim_cur;
  else
  {
    fprintf(stderr, "setrlimit: couldn't set maximum number of file descriptors: %s\n",
            strerror(errno));
    exit(EXIT_FAILURE);
  }
}

/*
 * print_startup - print startup information
 */
static void
print_startup(int pid)
{
  printf("ircd: version %s(%s)\n", PATCHLEVEL, SERIALNUM);
  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 = fork();

  if (pid < 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() == 0)
  {
    fprintf(stderr, "ERROR: This server won't run as root/superuser\n");
    return -1;
  }

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

  setup_fdlimit();

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

  /* It's not random, but it ought to be a little harder to guess */
  uint32_t seed = (uint32_t)(event_base->time.sec_real ^
                             (event_base->time.sec_monotonic | (getpid() << 16)));
  init_genrand(seed);

  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 == true)
  {
    printf("ircd: version %s(%s)\n", PATCHLEVEL, SERIALNUM);
    exit(EXIT_SUCCESS);
  }

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

  if (server_state.foreground == false)
  {
    make_daemon();
    close_standard_fds(); /* this needs to be before comm_select_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);

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

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

  isupport_init();
  ipcache_init();
  client_init();
  class_init();
  resolver_init();      /* Needs to be setup before the io loop */
  modules_init();
  conf_read_files(true);   /* cold start init conf files */
  capab_init();  /* Set up default_server_capabs */
  initialize_global_set_options();  /* Has to be called after conf_read_files() */
  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->created_real = event_base->time.sec_real;
  me.connection->created_monotonic = event_base->time.sec_monotonic;

  SetMe(&me);
  server_make(&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(true);
  load_conf_modules();
  load_core_modules(true);

  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 == false)
  {
    event_write_links_file.when = ConfigServerHide.flatten_links_delay;
    event_add(&event_write_links_file, NULL);
  }

  ilog(LOG_TYPE_IRCD, "Server ready. Running version: %s(%s)", PATCHLEVEL, SERIALNUM);
  io_loop();

  return 0;
}
Revision:	9228
Committed:	Sun Jan 26 14:17:46 2020 UTC (5 years, 7 months ago) by michael
Content type:	text/x-csrc
File size:	12476 byte(s)
Log Message:	- ircd.c: remove unused header inclusion
#	User	Rev	Content
1	adx	30	/*
2	michael	2916	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	adx	30	*
4	michael	9101	* Copyright (c) 1997-2020 ircd-hybrid development team
5	adx	30	*
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	michael	4565	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
19	adx	30	* USA
20			*/
21
22	michael	2916	/*! \file ircd.c
23			* \brief Starts up and runs the ircd.
24			* \version $Id$
25			*/
26
27	adx	30	#include "stdinc.h"
28	michael	3347	#include "user.h"
29	michael	1011	#include "list.h"
30	adx	30	#include "ircd.h"
31			#include "channel.h"
32	michael	8089	#include "channel_mode.h"
33	adx	30	#include "client.h"
34			#include "event.h"
35			#include "fdlist.h"
36			#include "hash.h"
37	michael	6161	#include "id.h"
38	adx	30	#include "irc_string.h"
39			#include "ircd_signal.h"
40			#include "motd.h"
41	michael	1632	#include "conf.h"
42	adx	30	#include "hostmask.h"
43			#include "parse.h"
44	michael	3322	#include "res.h"
45	adx	30	#include "restart.h"
46	michael	982	#include "rng_mt.h"
47	adx	30	#include "s_bsd.h"
48	michael	1309	#include "log.h"
49	michael	6481	#include "server.h"
50	michael	8166	#include "server_capab.h"
51	adx	30	#include "send.h"
52			#include "modules.h"
53			#include "ircd_getopt.h"
54	michael	1622	#include "conf_db.h"
55	michael	1632	#include "conf_class.h"
56	michael	4325	#include "ipcache.h"
57	michael	6185	#include "isupport.h"
58	michael	8729	#include "patchlevel.h"
59			#include "serno.h"
60	adx	30
61	michael	1858
62	michael	5737	struct SetOptions GlobalSetOptions; /* /quote set variables */
63	michael	5602	struct Counter Count;
64			struct ServerState_t server_state;
65			struct ServerStatistics ServerStats;
66	michael	5737	struct Connection meConnection; /* That's also part of me */
67	michael	5470	struct Client me = { .connection = &meConnection }; /* That's me */
68	adx	30
69	michael	5460	char **myargv;
70	adx	30	const char *logFileName = LPATH;
71			const char *pidFileName = PPATH;
72
73	michael	8658	bool dorehash;
74			bool doremotd;
75	adx	30
76	michael	8658	static bool printVersion;
77	michael	6735
78			static struct lgetopt myopts[] =
79			{
80			{ "configfile", &ConfigGeneral.configfile,
81			STRING, "File to use for ircd.conf" },
82			{ "klinefile", &ConfigGeneral.klinefile,
83			STRING, "File to use for kline database" },
84			{ "dlinefile", &ConfigGeneral.dlinefile,
85			STRING, "File to use for dline database" },
86			{ "xlinefile", &ConfigGeneral.xlinefile,
87			STRING, "File to use for xline database" },
88			{ "resvfile", &ConfigGeneral.resvfile,
89			STRING, "File to use for resv database" },
90			{ "logfile", &logFileName,
91			STRING, "File to use for ircd.log" },
92			{ "pidfile", &pidFileName,
93			STRING, "File to use for process ID" },
94			{ "foreground", &server_state.foreground,
95	michael	8862	BOOLEAN, "Run in foreground (don't detach)" },
96	michael	6735	{ "version", &printVersion,
97	michael	8862	BOOLEAN, "Print version and exit" },
98	michael	6735	{ "help", NULL, USAGE, "Print this text" },
99			{ NULL, NULL, STRING, NULL },
100			};
101
102	michael	4094	static struct event event_cleanup_tklines =
103			{
104			.name = "cleanup_tklines",
105			.handler = cleanup_tklines,
106			.when = CLEANUP_TKLINES_TIME
107			};
108
109			static struct event event_try_connections =
110			{
111			.name = "try_connections",
112			.handler = try_connections,
113	michael	8982	.when = 5
114	michael	4094	};
115
116			static struct event event_comm_checktimeouts =
117			{
118			.name = "comm_checktimeouts",
119			.handler = comm_checktimeouts,
120			.when = 1
121			};
122
123			static struct event event_save_all_databases =
124			{
125			.name = "save_all_databases",
126			.handler = save_all_databases,
127			.when = DATABASE_UPDATE_TIMEOUT
128			};
129
130			struct event event_write_links_file =
131			{
132			.name = "write_links_file",
133			.handler = write_links_file,
134			};
135
136
137	adx	30	static void
138			io_loop(void)
139			{
140	michael	8664	while (true)
141	adx	30	{
142			if (listing_client_list.head)
143			{
144	michael	4815	dlink_node node = NULL, node_next = NULL;
145			DLINK_FOREACH_SAFE(node, node_next, listing_client_list.head)
146	michael	8656	safe_list_channels(node->data, false);
147	adx	30	}
148
149	michael	4094	/* Run pending events */
150			event_run();
151	adx	30
152			comm_select();
153			exit_aborted_clients();
154			free_exited_clients();
155
156	michael	6735	/* Check to see whether we have to rehash the configuration. */
157	michael	8658	if (dorehash == true)
158	adx	30	{
159	michael	8658	conf_rehash(true);
160			dorehash = false;
161	adx	30	}
162	michael	3215
163	michael	8658	if (doremotd == true)
164	adx	30	{
165	michael	2150	motd_recache();
166	michael	6318	sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE,
167	michael	3065	"Got signal SIGUSR1, reloading motd file(s)");
168	michael	8658	doremotd = false;
169	adx	30	}
170			}
171			}
172
173			/* initalialize_global_set_options()
174			*
175			* inputs - none
176			* output - none
177	michael	2916	* side effects - This sets all global set options needed
178	adx	30	*/
179			static void
180			initialize_global_set_options(void)
181			{
182	michael	5489	GlobalSetOptions.maxclients = ConfigServerInfo.default_max_clients;
183	michael	8800	GlobalSetOptions.autoconn = true;
184	adx	30	GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
185	michael	5499	GlobalSetOptions.spam_num = MAX_JOIN_LEAVE_COUNT;
186			GlobalSetOptions.floodcount = ConfigGeneral.default_floodcount;
187	michael	7858	GlobalSetOptions.floodtime = ConfigGeneral.default_floodtime;
188	michael	5489	GlobalSetOptions.joinfloodcount = ConfigChannel.default_join_flood_count;
189			GlobalSetOptions.joinfloodtime = ConfigChannel.default_join_flood_time;
190	adx	30	}
191
192			/* write_pidfile()
193			*
194			* inputs - filename+path of pid file
195			* output - NONE
196			* side effects - write the pid of the ircd to filename
197			*/
198			static void
199			write_pidfile(const char *filename)
200			{
201	michael	1325	FILE *fb;
202	adx	30
203	michael	1325	if ((fb = fopen(filename, "w")))
204	adx	30	{
205	michael	6470	char buf[IRCD_BUFSIZE];
206	adx	30	unsigned int pid = (unsigned int)getpid();
207
208	michael	6470	snprintf(buf, sizeof(buf), "%u\n", pid);
209	michael	1325
210	michael	6470	if (fputs(buf, fb) == -1)
211	michael	5737	ilog(LOG_TYPE_IRCD, "Error writing to pid file %s: %s",
212			filename, strerror(errno));
213	adx	30
214	michael	1325	fclose(fb);
215	adx	30	}
216			else
217	michael	5566	ilog(LOG_TYPE_IRCD, "Error opening pid file %s: %s",
218	michael	4748	filename, strerror(errno));
219	adx	30	}
220
221			/* check_pidfile()
222			*
223			* inputs - filename+path of pid file
224			* output - none
225			* side effects - reads pid from pidfile and checks if ircd is in process
226			* list. if it is, gracefully exits
227			* -kre
228			*/
229			static void
230			check_pidfile(const char *filename)
231			{
232	michael	1325	FILE *fb;
233	michael	6470	char buf[IRCD_BUFSIZE];
234	adx	30
235	michael	1325	if ((fb = fopen(filename, "r")))
236	adx	30	{
237	michael	8702	if (fgets(buf, 20, fb) == NULL)
238	michael	6260	ilog(LOG_TYPE_IRCD, "Error reading from pid file %s: %s",
239			filename, strerror(errno));
240	adx	30	else
241			{
242	michael	6481	pid_t pid = atoi(buf);
243	adx	30
244	michael	8702	if (kill(pid, 0) == 0)
245	adx	30	{
246			/* log(L_ERROR, "Server is already running"); */
247			printf("ircd: daemon is already running\n");
248	michael	6646	exit(EXIT_FAILURE);
249	adx	30	}
250			}
251
252	michael	1325	fclose(fb);
253	adx	30	}
254			else if (errno != ENOENT)
255	michael	6260	ilog(LOG_TYPE_IRCD, "Error opening pid file %s: %s",
256			filename, strerror(errno));
257	adx	30	}
258
259			/* setup_corefile()
260			*
261			* inputs - nothing
262			* output - nothing
263			* side effects - setups corefile to system limits.
264			* -kre
265			*/
266			static void
267			setup_corefile(void)
268			{
269			struct rlimit rlim; /* resource limits */
270
271			/* Set corefilesize to maximum */
272	michael	8702	if (getrlimit(RLIMIT_CORE, &rlim) == 0)
273	adx	30	{
274			rlim.rlim_cur = rlim.rlim_max;
275			setrlimit(RLIMIT_CORE, &rlim);
276			}
277			}
278
279	michael	8774	static void
280			setup_fdlimit(void)
281			{
282			struct rlimit rlim; /* resource limits */
283
284			if (getrlimit(RLIMIT_NOFILE, &rlim))
285			{
286			fprintf(stderr, "getrlimit: couldn't get maximum number of file descriptors: %s\n",
287			strerror(errno));
288			exit(EXIT_FAILURE);
289			}
290
291			if (rlim.rlim_max > 0xFFFF)
292			rlim.rlim_max = 0xFFFF;
293			rlim.rlim_cur = rlim.rlim_max;
294
295			if (setrlimit(RLIMIT_NOFILE, &rlim) == 0)
296			hard_fdlimit = rlim.rlim_cur;
297			else
298			{
299			fprintf(stderr, "setrlimit: couldn't set maximum number of file descriptors: %s\n",
300			strerror(errno));
301			exit(EXIT_FAILURE);
302			}
303			}
304
305	michael	6735	/*
306			* print_startup - print startup information
307			*/
308			static void
309			print_startup(int pid)
310			{
311	michael	8729	printf("ircd: version %s(%s)\n", PATCHLEVEL, SERIALNUM);
312	michael	6735	printf("ircd: pid %d\n", pid);
313			printf("ircd: running in %s mode from %s\n", !server_state.foreground ? "background"
314			: "foreground", ConfigGeneral.dpath);
315			}
316
317			static void
318			make_daemon(void)
319			{
320	michael	9202	int pid = fork();
321	michael	6735
322	michael	9202	if (pid < 0)
323	michael	6735	{
324			perror("fork");
325			exit(EXIT_FAILURE);
326			}
327			else if (pid > 0)
328			{
329			print_startup(pid);
330			exit(EXIT_SUCCESS);
331			}
332
333			setsid();
334			}
335
336	adx	30	int
337			main(int argc, char *argv[])
338			{
339	michael	2253	/* Check to see if the user is running us as root, which is a nono */
340	michael	8702	if (geteuid() == 0)
341	adx	30	{
342	michael	3525	fprintf(stderr, "ERROR: This server won't run as root/superuser\n");
343	michael	982	return -1;
344	adx	30	}
345
346			/* Setup corefile size immediately after boot -kre */
347			setup_corefile();
348
349	michael	8774	setup_fdlimit();
350
351	michael	5545	/* Save server boot time right away, so getrusage works correctly */
352	michael	8900	event_time_set();
353	adx	30
354	michael	5545	/* It's not random, but it ought to be a little harder to guess */
355	michael	8925	uint32_t seed = (uint32_t)(event_base->time.sec_real ^
356			(event_base->time.sec_monotonic \| (getpid() << 16)));
357			init_genrand(seed);
358	michael	982
359	michael	4340	ConfigGeneral.dpath = DPATH;
360			ConfigGeneral.spath = SPATH;
361			ConfigGeneral.mpath = MPATH;
362			ConfigGeneral.configfile = CPATH; /* Server configuration file */
363			ConfigGeneral.klinefile = KPATH; /* Server kline file */
364			ConfigGeneral.xlinefile = XPATH; /* Server xline file */
365			ConfigGeneral.dlinefile = DLPATH; /* dline file */
366			ConfigGeneral.resvfile = RESVPATH; /* resv file */
367	michael	1702
368	adx	30	myargv = argv;
369	michael	5723	umask(077); /* umask 077: u=rwx,g=,o= */
370	adx	30
371			parseargs(&argc, &argv, myopts);
372
373	michael	8660	if (printVersion == true)
374	adx	30	{
375	michael	8729	printf("ircd: version %s(%s)\n", PATCHLEVEL, SERIALNUM);
376	adx	30	exit(EXIT_SUCCESS);
377			}
378
379	michael	4340	if (chdir(ConfigGeneral.dpath))
380	adx	30	{
381			perror("chdir");
382			exit(EXIT_FAILURE);
383			}
384
385	michael	8660	if (server_state.foreground == false)
386	adx	30	{
387			make_daemon();
388	michael	8414	close_standard_fds(); /* this needs to be before comm_select_init()! */
389	adx	30	}
390			else
391			print_startup(getpid());
392
393			setup_signals();
394
395			/* We need this to initialise the fd array before anything else */
396			fdlist_init();
397	michael	1831	log_set_file(LOG_TYPE_IRCD, 0, logFileName);
398	michael	4415
399	michael	8414	comm_select_init(); /* This needs to be setup early ! -- adrian */
400	michael	7279	tls_init();
401	michael	2253
402	adx	30	/* Check if there is pidfile and daemon already running */
403			check_pidfile(pidFileName);
404
405	michael	6185	isupport_init();
406	michael	4319	ipcache_init();
407	michael	1798	client_init();
408	michael	1632	class_init();
409	michael	7569	resolver_init(); /* Needs to be setup before the io loop */
410	michael	1404	modules_init();
411	michael	9110	conf_read_files(true); /* cold start init conf files */
412	michael	8166	capab_init(); /* Set up default_server_capabs */
413	michael	9110	initialize_global_set_options(); /* Has to be called after conf_read_files() */
414	michael	8089	channel_mode_init();
415	michael	2216	read_links_file();
416	michael	2150	motd_init();
417	michael	6189	user_modes_init();
418	adx	30
419	michael	4340	if (EmptyString(ConfigServerInfo.name))
420	michael	1115	{
421	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server name specified in serverinfo block.");
422	michael	1115	exit(EXIT_FAILURE);
423			}
424
425	michael	4340	strlcpy(me.name, ConfigServerInfo.name, sizeof(me.name));
426	adx	30
427	michael	6481	/* serverinfo {} description must exist. If not, error out.*/
428	michael	4340	if (EmptyString(ConfigServerInfo.description))
429	adx	30	{
430	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server description specified in serverinfo block.");
431	adx	30	exit(EXIT_FAILURE);
432			}
433	michael	885
434	michael	4340	strlcpy(me.info, ConfigServerInfo.description, sizeof(me.info));
435	adx	30
436	michael	6156	if (EmptyString(ConfigServerInfo.sid))
437			{
438			ilog(LOG_TYPE_IRCD, "Generating server ID");
439			generate_sid();
440			}
441			else
442			strlcpy(me.id, ConfigServerInfo.sid, sizeof(me.id));
443
444	michael	6464	init_uid();
445
446	michael	5545	me.from = &me;
447			me.servptr = &me;
448	michael	8919	me.connection->created_real = event_base->time.sec_real;
449			me.connection->created_monotonic = event_base->time.sec_monotonic;
450	adx	30
451			SetMe(&me);
452	michael	8426	server_make(&me);
453	adx	30
454	michael	1115	hash_add_id(&me);
455	adx	30	hash_add_client(&me);
456	michael	2916
457	michael	7963	dlinkAdd(&me, &me.node, &global_server_list);
458	adx	30
459	michael	6928	load_kline_database(ConfigGeneral.klinefile);
460			load_dline_database(ConfigGeneral.dlinefile);
461			load_xline_database(ConfigGeneral.xlinefile);
462			load_resv_database(ConfigGeneral.resvfile);
463	michael	1622
464	michael	8660	load_all_modules(true);
465	adx	30	load_conf_modules();
466	michael	8660	load_core_modules(true);
467	michael	1115
468	adx	30	write_pidfile(pidFileName);
469
470	michael	4094	event_addish(&event_cleanup_tklines, NULL);
471	adx	30
472			/* We want try_connections to be called as soon as possible now! -- adrian */
473			/* No, 'cause after a restart it would cause all sorts of nick collides */
474	michael	4094	event_addish(&event_try_connections, NULL);
475	adx	30
476			/* Setup the timeout check. I'll shift it later :) -- adrian */
477	michael	4399	event_add(&event_comm_checktimeouts, NULL);
478	adx	30
479	michael	4094	event_addish(&event_save_all_databases, NULL);
480	michael	1625
481	michael	8660	if (ConfigServerHide.flatten_links_delay && event_write_links_file.active == false)
482	michael	4094	{
483	michael	6597	event_write_links_file.when = ConfigServerHide.flatten_links_delay;
484	michael	6636	event_add(&event_write_links_file, NULL);
485	michael	4094	}
486	adx	30
487	michael	8729	ilog(LOG_TYPE_IRCD, "Server ready. Running version: %s(%s)", PATCHLEVEL, SERIALNUM);
488	adx	30	io_loop();
489	michael	6464
490	michael	885	return 0;
491	adx	30	}