trunk/src/ircd.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2019 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 "server_capab.h"
#include "send.h"
#include "modules.h"
#include "memory.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 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;

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,
   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, false);
  }

  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 (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 = 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) == 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);
  }
}

/*
 * 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;

  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() == 0)
  {
    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 == 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();
  hash_init();
  ipcache_init();
  client_init();
  class_init();
  auth_init();          /* Initialise the auth code */
  resolver_init();      /* Needs to be setup before the io loop */
  modules_init();
  read_conf_files(true);   /* cold start init conf files */
  capab_init();  /* Set up default_server_capabs */
  initialize_global_set_options();  /* Has to be called after read_conf_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->lasttime = CurrentTime;
  me.connection->since = CurrentTime;
  me.connection->firsttime = CurrentTime;

  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:	8752
Committed:	Tue Jan 1 11:07:01 2019 UTC (7 years, 9 months ago) by michael
Content type:	text/x-csrc
File size:	12788 byte(s)
Log Message:	- Update copyright years
#	User	Rev	Content
1	adx	30	/*
2	michael	2916	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	adx	30	*
4	michael	8752	* Copyright (c) 1997-2019 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	michael	3324	#include "auth.h"
48	adx	30	#include "s_bsd.h"
49	michael	1309	#include "log.h"
50	michael	6481	#include "server.h"
51	michael	8166	#include "server_capab.h"
52	adx	30	#include "send.h"
53			#include "modules.h"
54			#include "memory.h"
55			#include "ircd_getopt.h"
56	michael	1622	#include "conf_db.h"
57	michael	1632	#include "conf_class.h"
58	michael	4325	#include "ipcache.h"
59	michael	6185	#include "isupport.h"
60	michael	8729	#include "patchlevel.h"
61			#include "serno.h"
62	adx	30
63	michael	1858
64	michael	5737	struct SetOptions GlobalSetOptions; /* /quote set variables */
65	michael	5602	struct Counter Count;
66			struct ServerState_t server_state;
67			struct ServerStatistics ServerStats;
68	michael	7330	struct ServerTime SystemTime;
69	michael	5737	struct Connection meConnection; /* That's also part of me */
70	michael	5470	struct Client me = { .connection = &meConnection }; /* That's me */
71	adx	30
72	michael	5460	char **myargv;
73	adx	30	const char *logFileName = LPATH;
74			const char *pidFileName = PPATH;
75
76	michael	8658	bool dorehash;
77			bool doremotd;
78	adx	30
79	michael	8658	static bool printVersion;
80	michael	6735
81			static struct lgetopt myopts[] =
82			{
83			{ "configfile", &ConfigGeneral.configfile,
84			STRING, "File to use for ircd.conf" },
85			{ "klinefile", &ConfigGeneral.klinefile,
86			STRING, "File to use for kline database" },
87			{ "dlinefile", &ConfigGeneral.dlinefile,
88			STRING, "File to use for dline database" },
89			{ "xlinefile", &ConfigGeneral.xlinefile,
90			STRING, "File to use for xline database" },
91			{ "resvfile", &ConfigGeneral.resvfile,
92			STRING, "File to use for resv database" },
93			{ "logfile", &logFileName,
94			STRING, "File to use for ircd.log" },
95			{ "pidfile", &pidFileName,
96			STRING, "File to use for process ID" },
97			{ "foreground", &server_state.foreground,
98			YESNO, "Run in foreground (don't detach)" },
99			{ "version", &printVersion,
100			YESNO, "Print version and exit" },
101			{ "help", NULL, USAGE, "Print this text" },
102			{ NULL, NULL, STRING, NULL },
103			};
104
105	michael	4094	static struct event event_cleanup_tklines =
106			{
107			.name = "cleanup_tklines",
108			.handler = cleanup_tklines,
109			.when = CLEANUP_TKLINES_TIME
110			};
111
112			static struct event event_try_connections =
113			{
114			.name = "try_connections",
115			.handler = try_connections,
116			.when = STARTUP_CONNECTIONS_TIME
117			};
118
119			static struct event event_comm_checktimeouts =
120			{
121			.name = "comm_checktimeouts",
122			.handler = comm_checktimeouts,
123			.when = 1
124			};
125
126			static struct event event_save_all_databases =
127			{
128			.name = "save_all_databases",
129			.handler = save_all_databases,
130			.when = DATABASE_UPDATE_TIMEOUT
131			};
132
133			struct event event_write_links_file =
134			{
135			.name = "write_links_file",
136			.handler = write_links_file,
137			};
138
139
140	adx	30	void
141			set_time(void)
142			{
143	michael	2978	struct timeval newtime = { .tv_sec = 0, .tv_usec = 0 };
144	adx	30
145			if (gettimeofday(&newtime, NULL) == -1)
146			{
147	michael	6482	char buf[IRCD_BUFSIZE];
148
149			snprintf(buf, sizeof(buf), "Clock failure, TS can be corrupted: %s",
150			strerror(errno));
151	michael	8706	server_die(buf, false);
152	adx	30	}
153
154	michael	7330	if ((uintmax_t)newtime.tv_sec < CurrentTime)
155	adx	30	{
156	michael	6782	ilog(LOG_TYPE_IRCD, "System clock is running backwards - (%ju < %ju)",
157	michael	7330	(uintmax_t)newtime.tv_sec, CurrentTime);
158	michael	2980	sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE,
159	michael	6782	"System clock is running backwards - (%ju < %ju)",
160	michael	7330	(uintmax_t)newtime.tv_sec, CurrentTime);
161			event_set_back_events(CurrentTime - (uintmax_t)newtime.tv_sec);
162	adx	30	}
163
164	michael	6481	SystemTime.tv_sec = newtime.tv_sec;
165	adx	30	SystemTime.tv_usec = newtime.tv_usec;
166			}
167
168			static void
169			io_loop(void)
170			{
171	michael	8664	while (true)
172	adx	30	{
173			if (listing_client_list.head)
174			{
175	michael	4815	dlink_node node = NULL, node_next = NULL;
176			DLINK_FOREACH_SAFE(node, node_next, listing_client_list.head)
177	michael	8656	safe_list_channels(node->data, false);
178	adx	30	}
179
180	michael	4094	/* Run pending events */
181			event_run();
182	adx	30
183			comm_select();
184			exit_aborted_clients();
185			free_exited_clients();
186
187	michael	6735	/* Check to see whether we have to rehash the configuration. */
188	michael	8658	if (dorehash == true)
189	adx	30	{
190	michael	8658	conf_rehash(true);
191			dorehash = false;
192	adx	30	}
193	michael	3215
194	michael	8658	if (doremotd == true)
195	adx	30	{
196	michael	2150	motd_recache();
197	michael	6318	sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE,
198	michael	3065	"Got signal SIGUSR1, reloading motd file(s)");
199	michael	8658	doremotd = false;
200	adx	30	}
201			}
202			}
203
204			/* initalialize_global_set_options()
205			*
206			* inputs - none
207			* output - none
208	michael	2916	* side effects - This sets all global set options needed
209	adx	30	*/
210			static void
211			initialize_global_set_options(void)
212			{
213	michael	5489	GlobalSetOptions.maxclients = ConfigServerInfo.default_max_clients;
214	michael	5499	GlobalSetOptions.autoconn = 1;
215	adx	30	GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
216	michael	5499	GlobalSetOptions.spam_num = MAX_JOIN_LEAVE_COUNT;
217			GlobalSetOptions.floodcount = ConfigGeneral.default_floodcount;
218	michael	7858	GlobalSetOptions.floodtime = ConfigGeneral.default_floodtime;
219	michael	5489	GlobalSetOptions.joinfloodcount = ConfigChannel.default_join_flood_count;
220			GlobalSetOptions.joinfloodtime = ConfigChannel.default_join_flood_time;
221	adx	30	GlobalSetOptions.ident_timeout = IDENT_TIMEOUT;
222			}
223
224			/* write_pidfile()
225			*
226			* inputs - filename+path of pid file
227			* output - NONE
228			* side effects - write the pid of the ircd to filename
229			*/
230			static void
231			write_pidfile(const char *filename)
232			{
233	michael	1325	FILE *fb;
234	adx	30
235	michael	1325	if ((fb = fopen(filename, "w")))
236	adx	30	{
237	michael	6470	char buf[IRCD_BUFSIZE];
238	adx	30	unsigned int pid = (unsigned int)getpid();
239
240	michael	6470	snprintf(buf, sizeof(buf), "%u\n", pid);
241	michael	1325
242	michael	6470	if (fputs(buf, fb) == -1)
243	michael	5737	ilog(LOG_TYPE_IRCD, "Error writing to pid file %s: %s",
244			filename, strerror(errno));
245	adx	30
246	michael	1325	fclose(fb);
247	adx	30	}
248			else
249	michael	5566	ilog(LOG_TYPE_IRCD, "Error opening pid file %s: %s",
250	michael	4748	filename, strerror(errno));
251	adx	30	}
252
253			/* check_pidfile()
254			*
255			* inputs - filename+path of pid file
256			* output - none
257			* side effects - reads pid from pidfile and checks if ircd is in process
258			* list. if it is, gracefully exits
259			* -kre
260			*/
261			static void
262			check_pidfile(const char *filename)
263			{
264	michael	1325	FILE *fb;
265	michael	6470	char buf[IRCD_BUFSIZE];
266	adx	30
267	michael	1325	if ((fb = fopen(filename, "r")))
268	adx	30	{
269	michael	8702	if (fgets(buf, 20, fb) == NULL)
270	michael	6260	ilog(LOG_TYPE_IRCD, "Error reading from pid file %s: %s",
271			filename, strerror(errno));
272	adx	30	else
273			{
274	michael	6481	pid_t pid = atoi(buf);
275	adx	30
276	michael	8702	if (kill(pid, 0) == 0)
277	adx	30	{
278			/* log(L_ERROR, "Server is already running"); */
279			printf("ircd: daemon is already running\n");
280	michael	6646	exit(EXIT_FAILURE);
281	adx	30	}
282			}
283
284	michael	1325	fclose(fb);
285	adx	30	}
286			else if (errno != ENOENT)
287	michael	6260	ilog(LOG_TYPE_IRCD, "Error opening pid file %s: %s",
288			filename, strerror(errno));
289	adx	30	}
290
291			/* setup_corefile()
292			*
293			* inputs - nothing
294			* output - nothing
295			* side effects - setups corefile to system limits.
296			* -kre
297			*/
298			static void
299			setup_corefile(void)
300			{
301			struct rlimit rlim; /* resource limits */
302
303			/* Set corefilesize to maximum */
304	michael	8702	if (getrlimit(RLIMIT_CORE, &rlim) == 0)
305	adx	30	{
306			rlim.rlim_cur = rlim.rlim_max;
307			setrlimit(RLIMIT_CORE, &rlim);
308			}
309			}
310
311	michael	6735	/*
312			* print_startup - print startup information
313			*/
314			static void
315			print_startup(int pid)
316			{
317	michael	8729	printf("ircd: version %s(%s)\n", PATCHLEVEL, SERIALNUM);
318	michael	6735	printf("ircd: pid %d\n", pid);
319			printf("ircd: running in %s mode from %s\n", !server_state.foreground ? "background"
320			: "foreground", ConfigGeneral.dpath);
321			}
322
323			static void
324			make_daemon(void)
325			{
326			int pid;
327
328			if ((pid = fork()) < 0)
329			{
330			perror("fork");
331			exit(EXIT_FAILURE);
332			}
333			else if (pid > 0)
334			{
335			print_startup(pid);
336			exit(EXIT_SUCCESS);
337			}
338
339			setsid();
340			}
341
342	adx	30	int
343			main(int argc, char *argv[])
344			{
345	michael	2253	/* Check to see if the user is running us as root, which is a nono */
346	michael	8702	if (geteuid() == 0)
347	adx	30	{
348	michael	3525	fprintf(stderr, "ERROR: This server won't run as root/superuser\n");
349	michael	982	return -1;
350	adx	30	}
351
352			/* Setup corefile size immediately after boot -kre */
353			setup_corefile();
354
355	michael	5545	/* Save server boot time right away, so getrusage works correctly */
356	adx	30	set_time();
357
358	michael	5545	/* It's not random, but it ought to be a little harder to guess */
359	michael	982	init_genrand(SystemTime.tv_sec ^ (SystemTime.tv_usec \| (getpid() << 20)));
360
361	michael	4340	ConfigGeneral.dpath = DPATH;
362			ConfigGeneral.spath = SPATH;
363			ConfigGeneral.mpath = MPATH;
364			ConfigGeneral.configfile = CPATH; /* Server configuration file */
365			ConfigGeneral.klinefile = KPATH; /* Server kline file */
366			ConfigGeneral.xlinefile = XPATH; /* Server xline file */
367			ConfigGeneral.dlinefile = DLPATH; /* dline file */
368			ConfigGeneral.resvfile = RESVPATH; /* resv file */
369	michael	1702
370	adx	30	myargv = argv;
371	michael	5723	umask(077); /* umask 077: u=rwx,g=,o= */
372	adx	30
373			parseargs(&argc, &argv, myopts);
374
375	michael	8660	if (printVersion == true)
376	adx	30	{
377	michael	8729	printf("ircd: version %s(%s)\n", PATCHLEVEL, SERIALNUM);
378	adx	30	exit(EXIT_SUCCESS);
379			}
380
381	michael	4340	if (chdir(ConfigGeneral.dpath))
382	adx	30	{
383			perror("chdir");
384			exit(EXIT_FAILURE);
385			}
386
387	michael	8660	if (server_state.foreground == false)
388	adx	30	{
389			make_daemon();
390	michael	8414	close_standard_fds(); /* this needs to be before comm_select_init()! */
391	adx	30	}
392			else
393			print_startup(getpid());
394
395			setup_signals();
396
397			/* We need this to initialise the fd array before anything else */
398			fdlist_init();
399	michael	1831	log_set_file(LOG_TYPE_IRCD, 0, logFileName);
400	michael	4415
401	michael	8414	comm_select_init(); /* This needs to be setup early ! -- adrian */
402	michael	7279	tls_init();
403	michael	2253
404	adx	30	/* Check if there is pidfile and daemon already running */
405			check_pidfile(pidFileName);
406
407	michael	6185	isupport_init();
408	michael	1798	hash_init();
409	michael	4319	ipcache_init();
410	michael	1798	client_init();
411	michael	1632	class_init();
412	michael	1798	auth_init(); /* Initialise the auth code */
413	michael	7569	resolver_init(); /* Needs to be setup before the io loop */
414	michael	1404	modules_init();
415	michael	8656	read_conf_files(true); /* cold start init conf files */
416	michael	8166	capab_init(); /* Set up default_server_capabs */
417	michael	5489	initialize_global_set_options(); /* Has to be called after read_conf_files() */
418	michael	8089	channel_mode_init();
419	michael	2216	read_links_file();
420	michael	2150	motd_init();
421	michael	6189	user_modes_init();
422	adx	30
423	michael	4340	if (EmptyString(ConfigServerInfo.name))
424	michael	1115	{
425	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server name specified in serverinfo block.");
426	michael	1115	exit(EXIT_FAILURE);
427			}
428
429	michael	4340	strlcpy(me.name, ConfigServerInfo.name, sizeof(me.name));
430	adx	30
431	michael	6481	/* serverinfo {} description must exist. If not, error out.*/
432	michael	4340	if (EmptyString(ConfigServerInfo.description))
433	adx	30	{
434	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server description specified in serverinfo block.");
435	adx	30	exit(EXIT_FAILURE);
436			}
437	michael	885
438	michael	4340	strlcpy(me.info, ConfigServerInfo.description, sizeof(me.info));
439	adx	30
440	michael	6156	if (EmptyString(ConfigServerInfo.sid))
441			{
442			ilog(LOG_TYPE_IRCD, "Generating server ID");
443			generate_sid();
444			}
445			else
446			strlcpy(me.id, ConfigServerInfo.sid, sizeof(me.id));
447
448	michael	6464	init_uid();
449
450	michael	5545	me.from = &me;
451			me.servptr = &me;
452			me.connection->lasttime = CurrentTime;
453			me.connection->since = CurrentTime;
454	michael	4588	me.connection->firsttime = CurrentTime;
455	adx	30
456			SetMe(&me);
457	michael	8426	server_make(&me);
458	adx	30
459	michael	1115	hash_add_id(&me);
460	adx	30	hash_add_client(&me);
461	michael	2916
462	michael	7963	dlinkAdd(&me, &me.node, &global_server_list);
463	adx	30
464	michael	6928	load_kline_database(ConfigGeneral.klinefile);
465			load_dline_database(ConfigGeneral.dlinefile);
466			load_xline_database(ConfigGeneral.xlinefile);
467			load_resv_database(ConfigGeneral.resvfile);
468	michael	1622
469	michael	8660	load_all_modules(true);
470	adx	30	load_conf_modules();
471	michael	8660	load_core_modules(true);
472	michael	1115
473	adx	30	write_pidfile(pidFileName);
474
475	michael	4094	event_addish(&event_cleanup_tklines, NULL);
476	adx	30
477			/* We want try_connections to be called as soon as possible now! -- adrian */
478			/* No, 'cause after a restart it would cause all sorts of nick collides */
479	michael	4094	event_addish(&event_try_connections, NULL);
480	adx	30
481			/* Setup the timeout check. I'll shift it later :) -- adrian */
482	michael	4399	event_add(&event_comm_checktimeouts, NULL);
483	adx	30
484	michael	4094	event_addish(&event_save_all_databases, NULL);
485	michael	1625
486	michael	8660	if (ConfigServerHide.flatten_links_delay && event_write_links_file.active == false)
487	michael	4094	{
488	michael	6597	event_write_links_file.when = ConfigServerHide.flatten_links_delay;
489	michael	6636	event_add(&event_write_links_file, NULL);
490	michael	4094	}
491	adx	30
492	michael	8729	ilog(LOG_TYPE_IRCD, "Server ready. Running version: %s(%s)", PATCHLEVEL, SERIALNUM);
493	adx	30	io_loop();
494	michael	6464
495	michael	885	return 0;
496	adx	30	}