trunk/src/ircd.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2015 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 "client.h"
#include "event.h"
#include "fdlist.h"
#include "hash.h"
#include "irc_string.h"
#include "ircd_signal.h"
#include "gline.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"      /* try_connections */
#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"


#ifdef HAVE_LIBGEOIP
GeoIP *geoip_ctx;
#endif

struct timeval SystemTime;
struct Client me = { .connection = &(struct Connection) {} };  /* That's me */

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

unsigned int dorehash;
unsigned int doremotd;
unsigned int default_server_capabs;
unsigned int splitmode;
unsigned int splitchecking;
unsigned int split_users;
unsigned int split_servers;

static struct event event_cleanup_glines =
{
  .name = "cleanup_glines",
  .handler = cleanup_glines,
  .when = CLEANUP_GLINES_TIME
};

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,
};


/*
 * 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();
}

static int printVersion = 0;

static struct lgetopt myopts[] =
{
  {"configfile", &ConfigGeneral.configfile,
   STRING, "File to use for ircd.conf"},
  {"glinefile",  &ConfigGeneral.glinefile,
   STRING, "File to use for gline database"},
  {"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},
};

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

  if (gettimeofday(&newtime, NULL) == -1)
  {
    ilog(LOG_TYPE_IRCD, "Clock Failure (%s), TS can be corrupted",
         strerror(errno));
    sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
                         "Clock Failure (%s), TS can be corrupted",
                         strerror(errno));
    server_die("Clock Failure", 1);
  }

  if (newtime.tv_sec < CurrentTime)
  {
    ilog(LOG_TYPE_IRCD, "System clock is running backwards - (%lu < %lu)",
         (unsigned long)newtime.tv_sec, (unsigned long)CurrentTime);
    sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE,
                         "System clock is running backwards - (%lu < %lu)",
                         (unsigned long)newtime.tv_sec,
                         (unsigned long)CurrentTime);
    set_back_events(CurrentTime - 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_ALL, 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.autoconn  = 1;
  GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
  GlobalSetOptions.spam_num  = MAX_JOIN_LEAVE_COUNT;

  if (ConfigGeneral.default_floodcount)
    GlobalSetOptions.floodcount = ConfigGeneral.default_floodcount;
  else
    GlobalSetOptions.floodcount = 10;

  /* XXX I have no idea what to try here - Dianora */
  GlobalSetOptions.joinfloodcount = 16;
  GlobalSetOptions.joinfloodtime = 8;

  split_servers = ConfigChannel.default_split_server_count;
  split_users   = ConfigChannel.default_split_user_count;

  if (split_users && split_servers && (ConfigChannel.no_create_on_split ||
                                       ConfigChannel.no_join_on_split))
  {
    splitmode     = 1;
    splitchecking = 1;
  }

  GlobalSetOptions.ident_timeout = IDENT_TIMEOUT;
}

/* initialize_server_capabs()
 *
 * inputs       - none
 * output       - none
 */
static void
initialize_server_capabs(void)
{
  add_capability("QS", CAP_QS, 1);
  add_capability("EOB", CAP_EOB, 1);
  add_capability("TS6", CAP_TS6, 0);
  add_capability("CLUSTER", CAP_CLUSTER, 1);
  add_capability("SVS", CAP_SVS, 1);
  add_capability("CHW", CAP_CHW, 1);
  add_capability("HOPS", CAP_HOPS, 1);
}

/* 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 buff[IRCD_BUFSIZE];
    unsigned int pid = (unsigned int)getpid();

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

    if (fputs(buff, fb) == -1)
      ilog(LOG_TYPE_IRCD, "Error writing %u to pid file %s (%s)",
           pid, 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 buff[IRCD_BUFSIZE];
  pid_t pidfromfile;

  /* Don't do logging here, since we don't have log() initialised */
  if ((fb = fopen(filename, "r")))
  {
    if (!fgets(buff, 20, fb))
    {
      /* log(L_ERROR, "Error reading from pid file %s (%s)", filename,
       * strerror(errno));
       */
    }
    else
    {
      pidfromfile = atoi(buff);

      if (!kill(pidfromfile, 0))
      {
        /* log(L_ERROR, "Server is already running"); */
        printf("ircd: daemon is already running\n");
        exit(-1);
      }
    }

    fclose(fb);
  }
  else if (errno != ENOENT)
  {
    /* log(L_ERROR, "Error opening pid file %s", filename); */
  }
}

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

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

#ifdef HAVE_LIBCRYPTO
static int
always_accept_verify_cb(int preverify_ok, X509_STORE_CTX *x509_ctx)
{
  return 1;
}
#endif

/* init_ssl()
 *
 * inputs       - nothing
 * output       - nothing
 * side effects - setups SSL context.
 */
static void
ssl_init(void)
{
#ifdef HAVE_LIBCRYPTO
  SSL_load_error_strings();
  SSLeay_add_ssl_algorithms();

  if (!(ConfigServerInfo.server_ctx = SSL_CTX_new(SSLv23_server_method())))
  {
    const char *s = ERR_lib_error_string(ERR_get_error());

    fprintf(stderr, "ERROR: Could not initialize the SSL Server context -- %s\n", s);
    ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Server context -- %s", s);
    exit(EXIT_FAILURE);
    return;  /* Not reached */
  }

  SSL_CTX_set_options(ConfigServerInfo.server_ctx, SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3|SSL_OP_NO_TICKET);
  SSL_CTX_set_options(ConfigServerInfo.server_ctx, SSL_OP_SINGLE_DH_USE|SSL_OP_CIPHER_SERVER_PREFERENCE);
  SSL_CTX_set_verify(ConfigServerInfo.server_ctx, SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,
                     always_accept_verify_cb);
  SSL_CTX_set_session_cache_mode(ConfigServerInfo.server_ctx, SSL_SESS_CACHE_OFF);
  SSL_CTX_set_cipher_list(ConfigServerInfo.server_ctx, "EECDH+HIGH:EDH+HIGH:HIGH:!aNULL");

#if OPENSSL_VERSION_NUMBER >= 0x009080FFL && !defined(OPENSSL_NO_ECDH)
  {
    EC_KEY *key = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);

    if (key)
    {
      SSL_CTX_set_tmp_ecdh(ConfigServerInfo.server_ctx, key);
      EC_KEY_free(key);
    }
  }

  SSL_CTX_set_options(ConfigServerInfo.server_ctx, SSL_OP_SINGLE_ECDH_USE);
#endif

  if (!(ConfigServerInfo.client_ctx = SSL_CTX_new(SSLv23_client_method())))
  {
    const char *s = ERR_lib_error_string(ERR_get_error());

    fprintf(stderr, "ERROR: Could not initialize the SSL Client context -- %s\n", s);
    ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Client context -- %s", s);
    exit(EXIT_FAILURE);
    return;  /* Not reached */
  }

  SSL_CTX_set_options(ConfigServerInfo.client_ctx, SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3|SSL_OP_NO_TICKET);
  SSL_CTX_set_options(ConfigServerInfo.client_ctx, SSL_OP_SINGLE_DH_USE);
  SSL_CTX_set_verify(ConfigServerInfo.client_ctx, SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,
                     always_accept_verify_cb);
  SSL_CTX_set_session_cache_mode(ConfigServerInfo.client_ctx, SSL_SESS_CACHE_OFF);
#endif /* HAVE_LIBCRYPTO */
}

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

  dlinkAdd(&me, &me.node, &global_client_list);  /* Pointer to beginning
                                                   of Client list */
  ConfigLog.use_logging = 1;
  ConfigGeneral.dpath      = DPATH;
  ConfigGeneral.spath      = SPATH;
  ConfigGeneral.mpath      = MPATH;
  ConfigGeneral.configfile = CPATH;    /* Server configuration file */
  ConfigGeneral.klinefile  = KPATH;    /* Server kline file         */
  ConfigGeneral.glinefile  = GPATH;    /* Server gline file         */
  ConfigGeneral.xlinefile  = XPATH;    /* Server xline file         */
  ConfigGeneral.dlinefile  = DLPATH;   /* dline file                */
  ConfigGeneral.resvfile   = RESVPATH; /* resv file                 */

  myargv = argv;
  umask(077);                /* better safe than sorry --SRB */

  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);
  }

  ssl_init();

  if (!server_state.foreground)
  {
    make_daemon();
    close_standard_fds(); /* this needs to be before init_netio()! */
  }
  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);

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

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

  mp_pool_init();
  init_dlink_nodes();
  init_isupport();
  dbuf_init();
  hash_init();
  ipcache_init();
  client_init();
  class_init();
  whowas_init();
  watch_init();
  auth_init();          /* Initialise the auth code */
  init_resolver();      /* Needs to be setup before the io loop */
  modules_init();
  read_conf_files(1);   /* cold start init conf files */
  init_uid();
  initialize_server_capabs();   /* Set up default_server_capabs */
  initialize_global_set_options();
  channel_init();
  read_links_file();
  motd_init();
  user_usermodes_init();
#ifdef HAVE_LIBGEOIP
  geoip_ctx = GeoIP_new(GEOIP_MEMORY_CACHE);
#endif

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

  strlcpy(me.id, ConfigServerInfo.sid, sizeof(me.id));

  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));

  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, make_dlink_node(), &global_server_list);

  load_kline_database();
  load_dline_database();
  load_gline_database();
  load_xline_database();
  load_resv_database();

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

  write_pidfile(pidFileName);

  ilog(LOG_TYPE_IRCD, "Server Ready");

  event_addish(&event_cleanup_glines, NULL);
  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.links_delay > 0)
  {
    event_write_links_file.when = ConfigServerHide.links_delay;
    event_addish(&event_write_links_file, NULL);
  }
  else
    ConfigServerHide.links_disabled = 1;

  if (splitmode)
    event_addish(&splitmode_event, NULL);

  io_loop();
  return 0;
}
Revision:	5460
Committed:	Tue Feb 3 22:24:57 2015 UTC (10 years, 6 months ago) by michael
Content type:	text/x-csrc
File size:	16631 byte(s)
Log Message:	- Minor cleanups here and there
#	User	Rev	Content
1	adx	30	/*
2	michael	2916	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	adx	30	*
4	michael	5347	* Copyright (c) 1997-2015 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			#include "client.h"
33			#include "event.h"
34			#include "fdlist.h"
35			#include "hash.h"
36			#include "irc_string.h"
37			#include "ircd_signal.h"
38	michael	3321	#include "gline.h"
39	adx	30	#include "motd.h"
40	michael	1632	#include "conf.h"
41	adx	30	#include "hostmask.h"
42			#include "parse.h"
43	michael	3322	#include "res.h"
44	adx	30	#include "restart.h"
45	michael	982	#include "rng_mt.h"
46	michael	3324	#include "auth.h"
47	adx	30	#include "s_bsd.h"
48	michael	1309	#include "log.h"
49	michael	3347	#include "server.h" /* try_connections */
50	adx	30	#include "send.h"
51			#include "whowas.h"
52			#include "modules.h"
53			#include "memory.h"
54	michael	1654	#include "mempool.h"
55	adx	30	#include "ircd_getopt.h"
56	michael	876	#include "watch.h"
57	michael	1622	#include "conf_db.h"
58	michael	1632	#include "conf_class.h"
59	michael	4325	#include "ipcache.h"
60	adx	30
61	michael	1858
62			#ifdef HAVE_LIBGEOIP
63			GeoIP *geoip_ctx;
64			#endif
65	michael	2872
66	adx	30	struct timeval SystemTime;
67	michael	5460	struct Client me = { .connection = &(struct Connection) {} }; /* 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	5460	unsigned int dorehash;
74			unsigned int doremotd;
75	michael	3907	unsigned int default_server_capabs;
76	michael	1013	unsigned int splitmode;
77			unsigned int splitchecking;
78			unsigned int split_users;
79	adx	30	unsigned int split_servers;
80
81	michael	4094	static struct event event_cleanup_glines =
82			{
83			.name = "cleanup_glines",
84			.handler = cleanup_glines,
85			.when = CLEANUP_GLINES_TIME
86			};
87
88			static struct event event_cleanup_tklines =
89			{
90			.name = "cleanup_tklines",
91			.handler = cleanup_tklines,
92			.when = CLEANUP_TKLINES_TIME
93			};
94
95			static struct event event_try_connections =
96			{
97			.name = "try_connections",
98			.handler = try_connections,
99			.when = STARTUP_CONNECTIONS_TIME
100			};
101
102			static struct event event_comm_checktimeouts =
103			{
104			.name = "comm_checktimeouts",
105			.handler = comm_checktimeouts,
106			.when = 1
107			};
108
109			static struct event event_save_all_databases =
110			{
111			.name = "save_all_databases",
112			.handler = save_all_databases,
113			.when = DATABASE_UPDATE_TIMEOUT
114			};
115
116			struct event event_write_links_file =
117			{
118			.name = "write_links_file",
119			.handler = write_links_file,
120			};
121
122
123	adx	30	/*
124			* print_startup - print startup information
125			*/
126			static void
127			print_startup(int pid)
128			{
129	michael	2646	printf("ircd: version %s(%s)\n", ircd_version, serno);
130	adx	30	printf("ircd: pid %d\n", pid);
131			printf("ircd: running in %s mode from %s\n", !server_state.foreground ? "background"
132	michael	4340	: "foreground", ConfigGeneral.dpath);
133	adx	30	}
134
135			static void
136			make_daemon(void)
137			{
138			int pid;
139
140			if ((pid = fork()) < 0)
141			{
142			perror("fork");
143			exit(EXIT_FAILURE);
144			}
145			else if (pid > 0)
146			{
147			print_startup(pid);
148			exit(EXIT_SUCCESS);
149			}
150
151			setsid();
152			}
153
154			static int printVersion = 0;
155
156	michael	3215	static struct lgetopt myopts[] =
157			{
158	michael	4340	{"configfile", &ConfigGeneral.configfile,
159	adx	30	STRING, "File to use for ircd.conf"},
160	michael	4340	{"glinefile", &ConfigGeneral.glinefile,
161	michael	1718	STRING, "File to use for gline database"},
162	michael	4340	{"klinefile", &ConfigGeneral.klinefile,
163	michael	1718	STRING, "File to use for kline database"},
164	michael	4340	{"dlinefile", &ConfigGeneral.dlinefile,
165	michael	1718	STRING, "File to use for dline database"},
166	michael	4340	{"xlinefile", &ConfigGeneral.xlinefile,
167	michael	1718	STRING, "File to use for xline database"},
168	michael	4340	{"resvfile", &ConfigGeneral.resvfile,
169	michael	1718	STRING, "File to use for resv database"},
170	michael	2916	{"logfile", &logFileName,
171	adx	30	STRING, "File to use for ircd.log"},
172			{"pidfile", &pidFileName,
173			STRING, "File to use for process ID"},
174	michael	2916	{"foreground", &server_state.foreground,
175	adx	30	YESNO, "Run in foreground (don't detach)"},
176	michael	2916	{"version", &printVersion,
177	adx	30	YESNO, "Print version and exit"},
178			{"help", NULL, USAGE, "Print this text"},
179			{NULL, NULL, STRING, NULL},
180			};
181
182			void
183			set_time(void)
184			{
185	michael	2978	struct timeval newtime = { .tv_sec = 0, .tv_usec = 0 };
186	adx	30
187			if (gettimeofday(&newtime, NULL) == -1)
188			{
189	michael	1247	ilog(LOG_TYPE_IRCD, "Clock Failure (%s), TS can be corrupted",
190	adx	30	strerror(errno));
191	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
192	adx	30	"Clock Failure (%s), TS can be corrupted",
193			strerror(errno));
194	michael	3167	server_die("Clock Failure", 1);
195	adx	30	}
196
197			if (newtime.tv_sec < CurrentTime)
198			{
199	michael	2980	ilog(LOG_TYPE_IRCD, "System clock is running backwards - (%lu < %lu)",
200			(unsigned long)newtime.tv_sec, (unsigned long)CurrentTime);
201			sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE,
202			"System clock is running backwards - (%lu < %lu)",
203			(unsigned long)newtime.tv_sec,
204			(unsigned long)CurrentTime);
205	adx	30	set_back_events(CurrentTime - newtime.tv_sec);
206			}
207
208			SystemTime.tv_sec = newtime.tv_sec;
209			SystemTime.tv_usec = newtime.tv_usec;
210			}
211
212			static void
213			io_loop(void)
214			{
215	michael	3215	while (1)
216	adx	30	{
217			if (listing_client_list.head)
218			{
219	michael	4815	dlink_node node = NULL, node_next = NULL;
220			DLINK_FOREACH_SAFE(node, node_next, listing_client_list.head)
221			safe_list_channels(node->data, 0);
222	adx	30	}
223
224	michael	4094	/* Run pending events */
225			event_run();
226	adx	30
227			comm_select();
228			exit_aborted_clients();
229			free_exited_clients();
230
231			/* Check to see whether we have to rehash the configuration .. */
232			if (dorehash)
233			{
234	michael	4982	conf_rehash(1);
235	adx	30	dorehash = 0;
236			}
237	michael	3215
238	adx	30	if (doremotd)
239			{
240	michael	2150	motd_recache();
241	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
242	michael	3065	"Got signal SIGUSR1, reloading motd file(s)");
243	adx	30	doremotd = 0;
244			}
245			}
246			}
247
248			/* initalialize_global_set_options()
249			*
250			* inputs - none
251			* output - none
252	michael	2916	* side effects - This sets all global set options needed
253	adx	30	*/
254			static void
255			initialize_global_set_options(void)
256			{
257			GlobalSetOptions.autoconn = 1;
258			GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
259			GlobalSetOptions.spam_num = MAX_JOIN_LEAVE_COUNT;
260
261	michael	4340	if (ConfigGeneral.default_floodcount)
262			GlobalSetOptions.floodcount = ConfigGeneral.default_floodcount;
263	adx	30	else
264			GlobalSetOptions.floodcount = 10;
265
266			/* XXX I have no idea what to try here - Dianora */
267			GlobalSetOptions.joinfloodcount = 16;
268			GlobalSetOptions.joinfloodtime = 8;
269
270			split_servers = ConfigChannel.default_split_server_count;
271			split_users = ConfigChannel.default_split_user_count;
272
273			if (split_users && split_servers && (ConfigChannel.no_create_on_split \|\|
274			ConfigChannel.no_join_on_split))
275			{
276			splitmode = 1;
277			splitchecking = 1;
278			}
279
280			GlobalSetOptions.ident_timeout = IDENT_TIMEOUT;
281			}
282
283			/* initialize_server_capabs()
284			*
285			* inputs - none
286			* output - none
287			*/
288			static void
289			initialize_server_capabs(void)
290			{
291			add_capability("QS", CAP_QS, 1);
292			add_capability("EOB", CAP_EOB, 1);
293	michael	1117	add_capability("TS6", CAP_TS6, 0);
294	adx	30	add_capability("CLUSTER", CAP_CLUSTER, 1);
295	michael	1196	add_capability("SVS", CAP_SVS, 1);
296	michael	3267	add_capability("CHW", CAP_CHW, 1);
297	adx	30	add_capability("HOPS", CAP_HOPS, 1);
298			}
299
300			/* write_pidfile()
301			*
302			* inputs - filename+path of pid file
303			* output - NONE
304			* side effects - write the pid of the ircd to filename
305			*/
306			static void
307			write_pidfile(const char *filename)
308			{
309	michael	1325	FILE *fb;
310	adx	30
311	michael	1325	if ((fb = fopen(filename, "w")))
312	adx	30	{
313	michael	2691	char buff[IRCD_BUFSIZE];
314	adx	30	unsigned int pid = (unsigned int)getpid();
315
316	michael	1325	snprintf(buff, sizeof(buff), "%u\n", pid);
317
318	michael	4736	if (fputs(buff, fb) == -1)
319	michael	1247	ilog(LOG_TYPE_IRCD, "Error writing %u to pid file %s (%s)",
320	adx	30	pid, filename, strerror(errno));
321
322	michael	1325	fclose(fb);
323	adx	30	}
324			else
325			{
326	michael	4748	ilog(LOG_TYPE_IRCD, "Error opening pid file %s (%s)",
327			filename, strerror(errno));
328	adx	30	}
329			}
330
331			/* check_pidfile()
332			*
333			* inputs - filename+path of pid file
334			* output - none
335			* side effects - reads pid from pidfile and checks if ircd is in process
336			* list. if it is, gracefully exits
337			* -kre
338			*/
339			static void
340			check_pidfile(const char *filename)
341			{
342	michael	1325	FILE *fb;
343	michael	2691	char buff[IRCD_BUFSIZE];
344	adx	30	pid_t pidfromfile;
345
346			/* Don't do logging here, since we don't have log() initialised */
347	michael	1325	if ((fb = fopen(filename, "r")))
348	adx	30	{
349	michael	4733	if (!fgets(buff, 20, fb))
350	adx	30	{
351			/* log(L_ERROR, "Error reading from pid file %s (%s)", filename,
352			* strerror(errno));
353			*/
354			}
355			else
356			{
357			pidfromfile = atoi(buff);
358
359			if (!kill(pidfromfile, 0))
360			{
361			/* log(L_ERROR, "Server is already running"); */
362			printf("ircd: daemon is already running\n");
363			exit(-1);
364			}
365			}
366
367	michael	1325	fclose(fb);
368	adx	30	}
369			else if (errno != ENOENT)
370			{
371			/* log(L_ERROR, "Error opening pid file %s", filename); */
372			}
373			}
374
375			/* setup_corefile()
376			*
377			* inputs - nothing
378			* output - nothing
379			* side effects - setups corefile to system limits.
380			* -kre
381			*/
382			static void
383			setup_corefile(void)
384			{
385			#ifdef HAVE_SYS_RESOURCE_H
386			struct rlimit rlim; /* resource limits */
387
388			/* Set corefilesize to maximum */
389			if (!getrlimit(RLIMIT_CORE, &rlim))
390			{
391			rlim.rlim_cur = rlim.rlim_max;
392			setrlimit(RLIMIT_CORE, &rlim);
393			}
394			#endif
395			}
396
397	michael	2228	#ifdef HAVE_LIBCRYPTO
398			static int
399			always_accept_verify_cb(int preverify_ok, X509_STORE_CTX *x509_ctx)
400			{
401			return 1;
402			}
403			#endif
404
405	adx	30	/* init_ssl()
406			*
407			* inputs - nothing
408			* output - nothing
409			* side effects - setups SSL context.
410			*/
411			static void
412	michael	1798	ssl_init(void)
413	adx	30	{
414			#ifdef HAVE_LIBCRYPTO
415			SSL_load_error_strings();
416			SSLeay_add_ssl_algorithms();
417
418	michael	4733	if (!(ConfigServerInfo.server_ctx = SSL_CTX_new(SSLv23_server_method())))
419	adx	30	{
420	michael	4129	const char *s = ERR_lib_error_string(ERR_get_error());
421	adx	30
422	michael	4129	fprintf(stderr, "ERROR: Could not initialize the SSL Server context -- %s\n", s);
423	michael	4763	ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Server context -- %s", s);
424	michael	4497	exit(EXIT_FAILURE);
425	michael	4751	return; /* Not reached */
426	adx	30	}
427
428	michael	4730	SSL_CTX_set_options(ConfigServerInfo.server_ctx, SSL_OP_NO_SSLv2\|SSL_OP_NO_SSLv3\|SSL_OP_NO_TICKET);
429	michael	4593	SSL_CTX_set_options(ConfigServerInfo.server_ctx, SSL_OP_SINGLE_DH_USE\|SSL_OP_CIPHER_SERVER_PREFERENCE);
430	michael	4340	SSL_CTX_set_verify(ConfigServerInfo.server_ctx, SSL_VERIFY_PEER\|SSL_VERIFY_CLIENT_ONCE,
431	michael	2228	always_accept_verify_cb);
432	michael	4730	SSL_CTX_set_session_cache_mode(ConfigServerInfo.server_ctx, SSL_SESS_CACHE_OFF);
433	michael	4892	SSL_CTX_set_cipher_list(ConfigServerInfo.server_ctx, "EECDH+HIGH:EDH+HIGH:HIGH:!aNULL");
434	adx	30
435	michael	4744	#if OPENSSL_VERSION_NUMBER >= 0x009080FFL && !defined(OPENSSL_NO_ECDH)
436	michael	4070	{
437			EC_KEY *key = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);
438
439			if (key)
440			{
441	michael	4340	SSL_CTX_set_tmp_ecdh(ConfigServerInfo.server_ctx, key);
442	michael	4070	EC_KEY_free(key);
443			}
444			}
445
446	michael	4340	SSL_CTX_set_options(ConfigServerInfo.server_ctx, SSL_OP_SINGLE_ECDH_USE);
447	michael	4070	#endif
448
449	michael	4733	if (!(ConfigServerInfo.client_ctx = SSL_CTX_new(SSLv23_client_method())))
450	michael	1303	{
451	michael	4129	const char *s = ERR_lib_error_string(ERR_get_error());
452	michael	1303
453	michael	4129	fprintf(stderr, "ERROR: Could not initialize the SSL Client context -- %s\n", s);
454	michael	4763	ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Client context -- %s", s);
455	michael	4497	exit(EXIT_FAILURE);
456	michael	4751	return; /* Not reached */
457	michael	1303	}
458
459	michael	4730	SSL_CTX_set_options(ConfigServerInfo.client_ctx, SSL_OP_NO_SSLv2\|SSL_OP_NO_SSLv3\|SSL_OP_NO_TICKET);
460	michael	4340	SSL_CTX_set_options(ConfigServerInfo.client_ctx, SSL_OP_SINGLE_DH_USE);
461			SSL_CTX_set_verify(ConfigServerInfo.client_ctx, SSL_VERIFY_PEER\|SSL_VERIFY_CLIENT_ONCE,
462	michael	2228	always_accept_verify_cb);
463	michael	4730	SSL_CTX_set_session_cache_mode(ConfigServerInfo.client_ctx, SSL_SESS_CACHE_OFF);
464	adx	30	#endif /* HAVE_LIBCRYPTO */
465			}
466
467			int
468			main(int argc, char *argv[])
469			{
470	michael	2253	/* Check to see if the user is running us as root, which is a nono */
471	michael	4733	if (!geteuid())
472	adx	30	{
473	michael	3525	fprintf(stderr, "ERROR: This server won't run as root/superuser\n");
474	michael	982	return -1;
475	adx	30	}
476
477			/* Setup corefile size immediately after boot -kre */
478			setup_corefile();
479
480			/* save server boot time right away, so getrusage works correctly */
481			set_time();
482
483	michael	982	/* It ain't random, but it ought to be a little harder to guess */
484			init_genrand(SystemTime.tv_sec ^ (SystemTime.tv_usec \| (getpid() << 20)));
485
486	michael	2253	dlinkAdd(&me, &me.node, &global_client_list); /* Pointer to beginning
487	adx	30	of Client list */
488	michael	4340	ConfigLog.use_logging = 1;
489			ConfigGeneral.dpath = DPATH;
490			ConfigGeneral.spath = SPATH;
491			ConfigGeneral.mpath = MPATH;
492			ConfigGeneral.configfile = CPATH; /* Server configuration file */
493			ConfigGeneral.klinefile = KPATH; /* Server kline file */
494			ConfigGeneral.glinefile = GPATH; /* Server gline file */
495			ConfigGeneral.xlinefile = XPATH; /* Server xline file */
496			ConfigGeneral.dlinefile = DLPATH; /* dline file */
497			ConfigGeneral.resvfile = RESVPATH; /* resv file */
498	michael	1702
499	adx	30	myargv = argv;
500			umask(077); /* better safe than sorry --SRB */
501
502			parseargs(&argc, &argv, myopts);
503
504			if (printVersion)
505			{
506	michael	2646	printf("ircd: version %s(%s)\n", ircd_version, serno);
507	adx	30	exit(EXIT_SUCCESS);
508			}
509
510	michael	4340	if (chdir(ConfigGeneral.dpath))
511	adx	30	{
512			perror("chdir");
513			exit(EXIT_FAILURE);
514			}
515
516	michael	1798	ssl_init();
517	adx	30
518			if (!server_state.foreground)
519			{
520			make_daemon();
521			close_standard_fds(); /* this needs to be before init_netio()! */
522			}
523			else
524			print_startup(getpid());
525
526			setup_signals();
527
528			/* We need this to initialise the fd array before anything else */
529			fdlist_init();
530	michael	1831	log_set_file(LOG_TYPE_IRCD, 0, logFileName);
531	michael	4415
532	michael	2632	init_netio(); /* This needs to be setup early ! -- adrian */
533	michael	2253
534	adx	30	/* Check if there is pidfile and daemon already running */
535			check_pidfile(pidFileName);
536
537	michael	1654	mp_pool_init();
538	adx	30	init_dlink_nodes();
539	michael	2159	init_isupport();
540	adx	30	dbuf_init();
541	michael	1798	hash_init();
542	michael	4319	ipcache_init();
543	michael	1798	client_init();
544	michael	1632	class_init();
545	michael	1358	whowas_init();
546	michael	876	watch_init();
547	michael	1798	auth_init(); /* Initialise the auth code */
548	michael	998	init_resolver(); /* Needs to be setup before the io loop */
549	michael	1404	modules_init();
550	adx	30	read_conf_files(1); /* cold start init conf files */
551			init_uid();
552			initialize_server_capabs(); /* Set up default_server_capabs */
553			initialize_global_set_options();
554	michael	1798	channel_init();
555	michael	2216	read_links_file();
556	michael	2150	motd_init();
557	michael	5392	user_usermodes_init();
558	michael	1858	#ifdef HAVE_LIBGEOIP
559			geoip_ctx = GeoIP_new(GEOIP_MEMORY_CACHE);
560			#endif
561	adx	30
562	michael	4340	if (EmptyString(ConfigServerInfo.sid))
563	adx	30	{
564	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server id specified in serverinfo block.");
565	adx	30	exit(EXIT_FAILURE);
566			}
567	michael	885
568	michael	4340	strlcpy(me.id, ConfigServerInfo.sid, sizeof(me.id));
569	michael	1115
570	michael	4340	if (EmptyString(ConfigServerInfo.name))
571	michael	1115	{
572	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server name specified in serverinfo block.");
573	michael	1115	exit(EXIT_FAILURE);
574			}
575
576	michael	4340	strlcpy(me.name, ConfigServerInfo.name, sizeof(me.name));
577	adx	30
578			/* serverinfo{} description must exist. If not, error out.*/
579	michael	4340	if (EmptyString(ConfigServerInfo.description))
580	adx	30	{
581	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server description specified in serverinfo block.");
582	adx	30	exit(EXIT_FAILURE);
583			}
584	michael	885
585	michael	4340	strlcpy(me.info, ConfigServerInfo.description, sizeof(me.info));
586	adx	30
587	michael	1241	me.from = &me;
588			me.servptr = &me;
589	michael	4588	me.connection->lasttime = CurrentTime;
590			me.connection->since = CurrentTime;
591			me.connection->firsttime = CurrentTime;
592	adx	30
593			SetMe(&me);
594			make_server(&me);
595
596	michael	1115	hash_add_id(&me);
597	adx	30	hash_add_client(&me);
598	michael	2916
599	michael	4209	dlinkAdd(&me, make_dlink_node(), &global_server_list);
600	adx	30
601	michael	1622	load_kline_database();
602			load_dline_database();
603			load_gline_database();
604			load_xline_database();
605			load_resv_database();
606
607	adx	30	load_all_modules(1);
608			load_conf_modules();
609			load_core_modules(1);
610	michael	1115
611	adx	30	write_pidfile(pidFileName);
612
613	michael	1247	ilog(LOG_TYPE_IRCD, "Server Ready");
614	adx	30
615	michael	4094	event_addish(&event_cleanup_glines, NULL);
616			event_addish(&event_cleanup_tklines, NULL);
617	adx	30
618			/* We want try_connections to be called as soon as possible now! -- adrian */
619			/* No, 'cause after a restart it would cause all sorts of nick collides */
620	michael	4094	event_addish(&event_try_connections, NULL);
621	adx	30
622			/* Setup the timeout check. I'll shift it later :) -- adrian */
623	michael	4399	event_add(&event_comm_checktimeouts, NULL);
624	adx	30
625	michael	4094	event_addish(&event_save_all_databases, NULL);
626	michael	1625
627	adx	30	if (ConfigServerHide.links_delay > 0)
628	michael	4094	{
629			event_write_links_file.when = ConfigServerHide.links_delay;
630			event_addish(&event_write_links_file, NULL);
631			}
632	adx	30	else
633			ConfigServerHide.links_disabled = 1;
634
635			if (splitmode)
636	michael	4133	event_addish(&splitmode_event, NULL);
637	adx	30
638			io_loop();
639	michael	885	return 0;
640	adx	30	}