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"
#include "extban.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();
  extban_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:	9234
Committed:	Fri Jan 31 17:38:34 2020 UTC (6 years, 8 months ago) by michael
Content type:	text/x-csrc
File size:	12513 byte(s)
Log Message:	- Extbans have been implemented. Main implementation done by Adam for p4. Currently supported extbans: Matching: $a:<account> Matches users logged into a matching account. $c:<channel> Matches users that are on the given channel. An additional prefix of either @, %, or + can be specified to test for certain channel privileges. $o:<class> Matches IRC operators that have joined a class matching the mask. $r:<realname> Matches users with a matching realname. $s:<server> Matches users that are connected to a server matching the mask. $u:<modes> Matches users having the specified user modes set or not set. $z:<certfp> Matches users having the given TLS certificate fingerprint. Acting: $j:<banmask> Prevents matching users from joining the channel. $m:<banmask> Blocks messages from matching users. Users with voice or above are not affected.
#	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	michael	9234	#include "extban.h"
61	adx	30
62	michael	1858
63	michael	5737	struct SetOptions GlobalSetOptions; /* /quote set variables */
64	michael	5602	struct Counter Count;
65			struct ServerState_t server_state;
66			struct ServerStatistics ServerStats;
67	michael	5737	struct Connection meConnection; /* That's also part of me */
68	michael	5470	struct Client me = { .connection = &meConnection }; /* That's me */
69	adx	30
70	michael	5460	char **myargv;
71	adx	30	const char *logFileName = LPATH;
72			const char *pidFileName = PPATH;
73
74	michael	8658	bool dorehash;
75			bool doremotd;
76	adx	30
77	michael	8658	static bool printVersion;
78	michael	6735
79			static struct lgetopt myopts[] =
80			{
81			{ "configfile", &ConfigGeneral.configfile,
82			STRING, "File to use for ircd.conf" },
83			{ "klinefile", &ConfigGeneral.klinefile,
84			STRING, "File to use for kline database" },
85			{ "dlinefile", &ConfigGeneral.dlinefile,
86			STRING, "File to use for dline database" },
87			{ "xlinefile", &ConfigGeneral.xlinefile,
88			STRING, "File to use for xline database" },
89			{ "resvfile", &ConfigGeneral.resvfile,
90			STRING, "File to use for resv database" },
91			{ "logfile", &logFileName,
92			STRING, "File to use for ircd.log" },
93			{ "pidfile", &pidFileName,
94			STRING, "File to use for process ID" },
95			{ "foreground", &server_state.foreground,
96	michael	8862	BOOLEAN, "Run in foreground (don't detach)" },
97	michael	6735	{ "version", &printVersion,
98	michael	8862	BOOLEAN, "Print version and exit" },
99	michael	6735	{ "help", NULL, USAGE, "Print this text" },
100			{ NULL, NULL, STRING, NULL },
101			};
102
103	michael	4094	static struct event event_cleanup_tklines =
104			{
105			.name = "cleanup_tklines",
106			.handler = cleanup_tklines,
107			.when = CLEANUP_TKLINES_TIME
108			};
109
110			static struct event event_try_connections =
111			{
112			.name = "try_connections",
113			.handler = try_connections,
114	michael	8982	.when = 5
115	michael	4094	};
116
117			static struct event event_comm_checktimeouts =
118			{
119			.name = "comm_checktimeouts",
120			.handler = comm_checktimeouts,
121			.when = 1
122			};
123
124			static struct event event_save_all_databases =
125			{
126			.name = "save_all_databases",
127			.handler = save_all_databases,
128			.when = DATABASE_UPDATE_TIMEOUT
129			};
130
131			struct event event_write_links_file =
132			{
133			.name = "write_links_file",
134			.handler = write_links_file,
135			};
136
137
138	adx	30	static void
139			io_loop(void)
140			{
141	michael	8664	while (true)
142	adx	30	{
143			if (listing_client_list.head)
144			{
145	michael	4815	dlink_node node = NULL, node_next = NULL;
146			DLINK_FOREACH_SAFE(node, node_next, listing_client_list.head)
147	michael	8656	safe_list_channels(node->data, false);
148	adx	30	}
149
150	michael	4094	/* Run pending events */
151			event_run();
152	adx	30
153			comm_select();
154			exit_aborted_clients();
155			free_exited_clients();
156
157	michael	6735	/* Check to see whether we have to rehash the configuration. */
158	michael	8658	if (dorehash == true)
159	adx	30	{
160	michael	8658	conf_rehash(true);
161			dorehash = false;
162	adx	30	}
163	michael	3215
164	michael	8658	if (doremotd == true)
165	adx	30	{
166	michael	2150	motd_recache();
167	michael	6318	sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE,
168	michael	3065	"Got signal SIGUSR1, reloading motd file(s)");
169	michael	8658	doremotd = false;
170	adx	30	}
171			}
172			}
173
174			/* initalialize_global_set_options()
175			*
176			* inputs - none
177			* output - none
178	michael	2916	* side effects - This sets all global set options needed
179	adx	30	*/
180			static void
181			initialize_global_set_options(void)
182			{
183	michael	5489	GlobalSetOptions.maxclients = ConfigServerInfo.default_max_clients;
184	michael	8800	GlobalSetOptions.autoconn = true;
185	adx	30	GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
186	michael	5499	GlobalSetOptions.spam_num = MAX_JOIN_LEAVE_COUNT;
187			GlobalSetOptions.floodcount = ConfigGeneral.default_floodcount;
188	michael	7858	GlobalSetOptions.floodtime = ConfigGeneral.default_floodtime;
189	michael	5489	GlobalSetOptions.joinfloodcount = ConfigChannel.default_join_flood_count;
190			GlobalSetOptions.joinfloodtime = ConfigChannel.default_join_flood_time;
191	adx	30	}
192
193			/* write_pidfile()
194			*
195			* inputs - filename+path of pid file
196			* output - NONE
197			* side effects - write the pid of the ircd to filename
198			*/
199			static void
200			write_pidfile(const char *filename)
201			{
202	michael	1325	FILE *fb;
203	adx	30
204	michael	1325	if ((fb = fopen(filename, "w")))
205	adx	30	{
206	michael	6470	char buf[IRCD_BUFSIZE];
207	adx	30	unsigned int pid = (unsigned int)getpid();
208
209	michael	6470	snprintf(buf, sizeof(buf), "%u\n", pid);
210	michael	1325
211	michael	6470	if (fputs(buf, fb) == -1)
212	michael	5737	ilog(LOG_TYPE_IRCD, "Error writing to pid file %s: %s",
213			filename, strerror(errno));
214	adx	30
215	michael	1325	fclose(fb);
216	adx	30	}
217			else
218	michael	5566	ilog(LOG_TYPE_IRCD, "Error opening pid file %s: %s",
219	michael	4748	filename, strerror(errno));
220	adx	30	}
221
222			/* check_pidfile()
223			*
224			* inputs - filename+path of pid file
225			* output - none
226			* side effects - reads pid from pidfile and checks if ircd is in process
227			* list. if it is, gracefully exits
228			* -kre
229			*/
230			static void
231			check_pidfile(const char *filename)
232			{
233	michael	1325	FILE *fb;
234	michael	6470	char buf[IRCD_BUFSIZE];
235	adx	30
236	michael	1325	if ((fb = fopen(filename, "r")))
237	adx	30	{
238	michael	8702	if (fgets(buf, 20, fb) == NULL)
239	michael	6260	ilog(LOG_TYPE_IRCD, "Error reading from pid file %s: %s",
240			filename, strerror(errno));
241	adx	30	else
242			{
243	michael	6481	pid_t pid = atoi(buf);
244	adx	30
245	michael	8702	if (kill(pid, 0) == 0)
246	adx	30	{
247			/* log(L_ERROR, "Server is already running"); */
248			printf("ircd: daemon is already running\n");
249	michael	6646	exit(EXIT_FAILURE);
250	adx	30	}
251			}
252
253	michael	1325	fclose(fb);
254	adx	30	}
255			else if (errno != ENOENT)
256	michael	6260	ilog(LOG_TYPE_IRCD, "Error opening pid file %s: %s",
257			filename, strerror(errno));
258	adx	30	}
259
260			/* setup_corefile()
261			*
262			* inputs - nothing
263			* output - nothing
264			* side effects - setups corefile to system limits.
265			* -kre
266			*/
267			static void
268			setup_corefile(void)
269			{
270			struct rlimit rlim; /* resource limits */
271
272			/* Set corefilesize to maximum */
273	michael	8702	if (getrlimit(RLIMIT_CORE, &rlim) == 0)
274	adx	30	{
275			rlim.rlim_cur = rlim.rlim_max;
276			setrlimit(RLIMIT_CORE, &rlim);
277			}
278			}
279
280	michael	8774	static void
281			setup_fdlimit(void)
282			{
283			struct rlimit rlim; /* resource limits */
284
285			if (getrlimit(RLIMIT_NOFILE, &rlim))
286			{
287			fprintf(stderr, "getrlimit: couldn't get maximum number of file descriptors: %s\n",
288			strerror(errno));
289			exit(EXIT_FAILURE);
290			}
291
292			if (rlim.rlim_max > 0xFFFF)
293			rlim.rlim_max = 0xFFFF;
294			rlim.rlim_cur = rlim.rlim_max;
295
296			if (setrlimit(RLIMIT_NOFILE, &rlim) == 0)
297			hard_fdlimit = rlim.rlim_cur;
298			else
299			{
300			fprintf(stderr, "setrlimit: couldn't set maximum number of file descriptors: %s\n",
301			strerror(errno));
302			exit(EXIT_FAILURE);
303			}
304			}
305
306	michael	6735	/*
307			* print_startup - print startup information
308			*/
309			static void
310			print_startup(int pid)
311			{
312	michael	8729	printf("ircd: version %s(%s)\n", PATCHLEVEL, SERIALNUM);
313	michael	6735	printf("ircd: pid %d\n", pid);
314			printf("ircd: running in %s mode from %s\n", !server_state.foreground ? "background"
315			: "foreground", ConfigGeneral.dpath);
316			}
317
318			static void
319			make_daemon(void)
320			{
321	michael	9202	int pid = fork();
322	michael	6735
323	michael	9202	if (pid < 0)
324	michael	6735	{
325			perror("fork");
326			exit(EXIT_FAILURE);
327			}
328			else if (pid > 0)
329			{
330			print_startup(pid);
331			exit(EXIT_SUCCESS);
332			}
333
334			setsid();
335			}
336
337	adx	30	int
338			main(int argc, char *argv[])
339			{
340	michael	2253	/* Check to see if the user is running us as root, which is a nono */
341	michael	8702	if (geteuid() == 0)
342	adx	30	{
343	michael	3525	fprintf(stderr, "ERROR: This server won't run as root/superuser\n");
344	michael	982	return -1;
345	adx	30	}
346
347			/* Setup corefile size immediately after boot -kre */
348			setup_corefile();
349
350	michael	8774	setup_fdlimit();
351
352	michael	5545	/* Save server boot time right away, so getrusage works correctly */
353	michael	8900	event_time_set();
354	adx	30
355	michael	5545	/* It's not random, but it ought to be a little harder to guess */
356	michael	8925	uint32_t seed = (uint32_t)(event_base->time.sec_real ^
357			(event_base->time.sec_monotonic \| (getpid() << 16)));
358			init_genrand(seed);
359	michael	982
360	michael	4340	ConfigGeneral.dpath = DPATH;
361			ConfigGeneral.spath = SPATH;
362			ConfigGeneral.mpath = MPATH;
363			ConfigGeneral.configfile = CPATH; /* Server configuration file */
364			ConfigGeneral.klinefile = KPATH; /* Server kline file */
365			ConfigGeneral.xlinefile = XPATH; /* Server xline file */
366			ConfigGeneral.dlinefile = DLPATH; /* dline file */
367			ConfigGeneral.resvfile = RESVPATH; /* resv file */
368	michael	1702
369	adx	30	myargv = argv;
370	michael	5723	umask(077); /* umask 077: u=rwx,g=,o= */
371	adx	30
372			parseargs(&argc, &argv, myopts);
373
374	michael	8660	if (printVersion == true)
375	adx	30	{
376	michael	8729	printf("ircd: version %s(%s)\n", PATCHLEVEL, SERIALNUM);
377	adx	30	exit(EXIT_SUCCESS);
378			}
379
380	michael	4340	if (chdir(ConfigGeneral.dpath))
381	adx	30	{
382			perror("chdir");
383			exit(EXIT_FAILURE);
384			}
385
386	michael	8660	if (server_state.foreground == false)
387	adx	30	{
388			make_daemon();
389	michael	8414	close_standard_fds(); /* this needs to be before comm_select_init()! */
390	adx	30	}
391			else
392			print_startup(getpid());
393
394			setup_signals();
395
396			/* We need this to initialise the fd array before anything else */
397			fdlist_init();
398	michael	1831	log_set_file(LOG_TYPE_IRCD, 0, logFileName);
399	michael	4415
400	michael	8414	comm_select_init(); /* This needs to be setup early ! -- adrian */
401	michael	7279	tls_init();
402	michael	2253
403	adx	30	/* Check if there is pidfile and daemon already running */
404			check_pidfile(pidFileName);
405
406	michael	6185	isupport_init();
407	michael	4319	ipcache_init();
408	michael	1798	client_init();
409	michael	1632	class_init();
410	michael	7569	resolver_init(); /* Needs to be setup before the io loop */
411	michael	1404	modules_init();
412	michael	9110	conf_read_files(true); /* cold start init conf files */
413	michael	8166	capab_init(); /* Set up default_server_capabs */
414	michael	9110	initialize_global_set_options(); /* Has to be called after conf_read_files() */
415	michael	8089	channel_mode_init();
416	michael	9234	extban_init();
417	michael	2216	read_links_file();
418	michael	2150	motd_init();
419	michael	6189	user_modes_init();
420	adx	30
421	michael	4340	if (EmptyString(ConfigServerInfo.name))
422	michael	1115	{
423	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server name specified in serverinfo block.");
424	michael	1115	exit(EXIT_FAILURE);
425			}
426
427	michael	4340	strlcpy(me.name, ConfigServerInfo.name, sizeof(me.name));
428	adx	30
429	michael	6481	/* serverinfo {} description must exist. If not, error out.*/
430	michael	4340	if (EmptyString(ConfigServerInfo.description))
431	adx	30	{
432	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server description specified in serverinfo block.");
433	adx	30	exit(EXIT_FAILURE);
434			}
435	michael	885
436	michael	4340	strlcpy(me.info, ConfigServerInfo.description, sizeof(me.info));
437	adx	30
438	michael	6156	if (EmptyString(ConfigServerInfo.sid))
439			{
440			ilog(LOG_TYPE_IRCD, "Generating server ID");
441			generate_sid();
442			}
443			else
444			strlcpy(me.id, ConfigServerInfo.sid, sizeof(me.id));
445
446	michael	6464	init_uid();
447
448	michael	5545	me.from = &me;
449			me.servptr = &me;
450	michael	8919	me.connection->created_real = event_base->time.sec_real;
451			me.connection->created_monotonic = event_base->time.sec_monotonic;
452	adx	30
453			SetMe(&me);
454	michael	8426	server_make(&me);
455	adx	30
456	michael	1115	hash_add_id(&me);
457	adx	30	hash_add_client(&me);
458	michael	2916
459	michael	7963	dlinkAdd(&me, &me.node, &global_server_list);
460	adx	30
461	michael	6928	load_kline_database(ConfigGeneral.klinefile);
462			load_dline_database(ConfigGeneral.dlinefile);
463			load_xline_database(ConfigGeneral.xlinefile);
464			load_resv_database(ConfigGeneral.resvfile);
465	michael	1622
466	michael	8660	load_all_modules(true);
467	adx	30	load_conf_modules();
468	michael	8660	load_core_modules(true);
469	michael	1115
470	adx	30	write_pidfile(pidFileName);
471
472	michael	4094	event_addish(&event_cleanup_tklines, NULL);
473	adx	30
474			/* We want try_connections to be called as soon as possible now! -- adrian */
475			/* No, 'cause after a restart it would cause all sorts of nick collides */
476	michael	4094	event_addish(&event_try_connections, NULL);
477	adx	30
478			/* Setup the timeout check. I'll shift it later :) -- adrian */
479	michael	4399	event_add(&event_comm_checktimeouts, NULL);
480	adx	30
481	michael	4094	event_addish(&event_save_all_databases, NULL);
482	michael	1625
483	michael	8660	if (ConfigServerHide.flatten_links_delay && event_write_links_file.active == false)
484	michael	4094	{
485	michael	6597	event_write_links_file.when = ConfigServerHide.flatten_links_delay;
486	michael	6636	event_add(&event_write_links_file, NULL);
487	michael	4094	}
488	adx	30
489	michael	8729	ilog(LOG_TYPE_IRCD, "Server ready. Running version: %s(%s)", PATCHLEVEL, SERIALNUM);
490	adx	30	io_loop();
491	michael	6464
492	michael	885	return 0;
493	adx	30	}