trunk/src/ircd.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2014 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *  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"


#ifdef HAVE_LIBGEOIP
GeoIP *geoip_ctx;
#endif

/* /quote set variables */
struct SetOptions GlobalSetOptions;
struct Counter Count;
struct ServerState_t server_state;
struct ServerStatistics ServerStats;
struct timeval SystemTime;
struct Client me;             /* That's me */
struct LocalUser meLocalUser; /* That's also part of me */

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

char **myargv;

int dorehash = 0;
int doremotd = 0;

/* Set to zero because it should be initialized later using
 * initialize_server_capabs
 */
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,
};

struct event event_check_splitmode =
{
  .name = "check_splitmode",
  .handler = check_splitmode,
  .when = 60
};

/*
 * 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", ConfigFileEntry.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", &ConfigFileEntry.configfile,
   STRING, "File to use for ircd.conf"},
  {"glinefile",  &ConfigFileEntry.glinefile,
   STRING, "File to use for gline database"},
  {"klinefile",  &ConfigFileEntry.klinefile,
   STRING, "File to use for kline database"},
  {"dlinefile",  &ConfigFileEntry.dlinefile,
   STRING, "File to use for dline database"},
  {"xlinefile",  &ConfigFileEntry.xlinefile,
   STRING, "File to use for xline database"},
  {"resvfile",  &ConfigFileEntry.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 *ptr = NULL, *ptr_next = NULL;
      DLINK_FOREACH_SAFE(ptr, ptr_next, listing_client_list.head)
        safe_list_channels(ptr->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)
    {
      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)
{
  memset(&GlobalSetOptions, 0, sizeof(GlobalSetOptions));

  GlobalSetOptions.autoconn  = 1;
  GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
  GlobalSetOptions.spam_num  = MAX_JOIN_LEAVE_COUNT;

  if (ConfigFileEntry.default_floodcount)
    GlobalSetOptions.floodcount = ConfigFileEntry.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;
  /* End of global set options */
}

/* 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", filename);
  }
}

/* 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) == NULL)
    {
      /* 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
  const unsigned char session_id[] = "ircd-hybrid";

  SSL_load_error_strings();
  SSLeay_add_ssl_algorithms();

  if ((ServerInfo.server_ctx = SSL_CTX_new(SSLv23_server_method())) == NULL)
  {
    const char *s;

    fprintf(stderr, "ERROR: Could not initialize the SSL Server context -- %s\n",
            s = ERR_lib_error_string(ERR_get_error()));
    ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Server context -- %s\n", s);
  }

  SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3|SSL_OP_NO_TLSv1);
  SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_TLS_ROLLBACK_BUG);
  SSL_CTX_set_verify(ServerInfo.server_ctx, SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,
                     always_accept_verify_cb);
  SSL_CTX_set_session_id_context(ServerInfo.server_ctx, session_id, sizeof(session_id) - 1);

#if OPENSSL_VERSION_NUMBER >= 0x1000005FL && !defined(OPENSSL_NO_ECDH)
  {
    EC_KEY *key = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);

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

  SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_SINGLE_ECDH_USE);
#endif

  if ((ServerInfo.client_ctx = SSL_CTX_new(SSLv23_client_method())) == NULL)
  {
    const char *s;

    fprintf(stderr, "ERROR: Could not initialize the SSL Client context -- %s\n",
            s = ERR_lib_error_string(ERR_get_error()));
    ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Client context -- %s\n", s);
  }

  SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3|SSL_OP_NO_TLSv1);
  SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_TLS_ROLLBACK_BUG);
  SSL_CTX_set_verify(ServerInfo.client_ctx, SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,
                     always_accept_verify_cb);
#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() == 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 ain't random, but it ought to be a little harder to guess */
  init_genrand(SystemTime.tv_sec ^ (SystemTime.tv_usec | (getpid() << 20)));

  me.localClient = &meLocalUser;
  dlinkAdd(&me, &me.node, &global_client_list);  /* Pointer to beginning
                                                   of Client list */
  ConfigLoggingEntry.use_logging = 1;
  ConfigFileEntry.dpath      = DPATH;
  ConfigFileEntry.spath      = SPATH;
  ConfigFileEntry.mpath      = MPATH;
  ConfigFileEntry.configfile = CPATH;    /* Server configuration file */
  ConfigFileEntry.klinefile  = KPATH;    /* Server kline file         */
  ConfigFileEntry.glinefile  = GPATH;    /* Server gline file         */
  ConfigFileEntry.xlinefile  = XPATH;    /* Server xline file         */
  ConfigFileEntry.dlinefile  = DLPATH;   /* dline file                */
  ConfigFileEntry.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(ConfigFileEntry.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);
  check_can_use_v6();
  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();
  init_ip_hash_table();      /* client host ip hash table */
  init_host_hash();          /* Host-hashtable. */
  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();
#ifdef HAVE_LIBGEOIP
  geoip_ctx = GeoIP_new(GEOIP_MEMORY_CACHE);
#endif

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

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

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

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

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

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

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

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

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

  /* add ourselves to global_serv_list */
  dlinkAdd(&me, make_dlink_node(), &global_serv_list);

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

  if (chdir(MODPATH))
  {
    ilog(LOG_TYPE_IRCD, "Could not load core modules. Terminating!");
    exit(EXIT_FAILURE);
  }

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

  /* Go back to DPATH after checking to see if we can chdir to MODPATH */
  if (chdir(ConfigFileEntry.dpath))
  {
    perror("chdir");
    exit(EXIT_FAILURE);
  }

  /*
   * assemble_umode_buffer() has to be called after
   * reading conf/loading modules.
   */
  assemble_umode_buffer();

  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_addish(&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(&event_check_splitmode, NULL);

  io_loop();
  return 0;
}
Revision:	4105
Committed:	Mon Jun 30 15:39:47 2014 UTC (11 years, 2 months ago) by michael
Content type:	text/x-csrc
File size:	17386 byte(s)
Log Message:	- Removed supported.h
#	User	Rev	Content
1	adx	30	/*
2	michael	2916	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	adx	30	*
4	michael	2916	* Copyright (c) 1997-2014 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			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19			* 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	adx	30
60	michael	1858
61			#ifdef HAVE_LIBGEOIP
62			GeoIP *geoip_ctx;
63			#endif
64	michael	2872
65	adx	30	/* /quote set variables */
66			struct SetOptions GlobalSetOptions;
67	michael	2872	struct Counter Count;
68			struct ServerState_t server_state;
69	michael	896	struct ServerStatistics ServerStats;
70	adx	30	struct timeval SystemTime;
71			struct Client me; /* That's me */
72			struct LocalUser meLocalUser; /* That's also part of me */
73
74			const char *logFileName = LPATH;
75			const char *pidFileName = PPATH;
76
77			char **myargv;
78
79			int dorehash = 0;
80			int doremotd = 0;
81
82			/* Set to zero because it should be initialized later using
83			* initialize_server_capabs
84			*/
85	michael	3907	unsigned int default_server_capabs;
86	michael	1013	unsigned int splitmode;
87			unsigned int splitchecking;
88			unsigned int split_users;
89	adx	30	unsigned int split_servers;
90
91	michael	4094	static struct event event_cleanup_glines =
92			{
93			.name = "cleanup_glines",
94			.handler = cleanup_glines,
95			.when = CLEANUP_GLINES_TIME
96			};
97
98			static struct event event_cleanup_tklines =
99			{
100			.name = "cleanup_tklines",
101			.handler = cleanup_tklines,
102			.when = CLEANUP_TKLINES_TIME
103			};
104
105			static struct event event_try_connections =
106			{
107			.name = "try_connections",
108			.handler = try_connections,
109			.when = STARTUP_CONNECTIONS_TIME
110			};
111
112			static struct event event_comm_checktimeouts =
113			{
114			.name = "comm_checktimeouts",
115			.handler = comm_checktimeouts,
116			.when = 1
117			};
118
119			static struct event event_save_all_databases =
120			{
121			.name = "save_all_databases",
122			.handler = save_all_databases,
123			.when = DATABASE_UPDATE_TIMEOUT
124			};
125
126			struct event event_write_links_file =
127			{
128			.name = "write_links_file",
129			.handler = write_links_file,
130			};
131
132			struct event event_check_splitmode =
133			{
134			.name = "check_splitmode",
135			.handler = check_splitmode,
136			.when = 60
137			};
138
139	adx	30	/*
140			* print_startup - print startup information
141			*/
142			static void
143			print_startup(int pid)
144			{
145	michael	2646	printf("ircd: version %s(%s)\n", ircd_version, serno);
146	adx	30	printf("ircd: pid %d\n", pid);
147			printf("ircd: running in %s mode from %s\n", !server_state.foreground ? "background"
148			: "foreground", ConfigFileEntry.dpath);
149			}
150
151			static void
152			make_daemon(void)
153			{
154			int pid;
155
156			if ((pid = fork()) < 0)
157			{
158			perror("fork");
159			exit(EXIT_FAILURE);
160			}
161			else if (pid > 0)
162			{
163			print_startup(pid);
164			exit(EXIT_SUCCESS);
165			}
166
167			setsid();
168			}
169
170			static int printVersion = 0;
171
172	michael	3215	static struct lgetopt myopts[] =
173			{
174	michael	2916	{"configfile", &ConfigFileEntry.configfile,
175	adx	30	STRING, "File to use for ircd.conf"},
176	michael	1718	{"glinefile", &ConfigFileEntry.glinefile,
177			STRING, "File to use for gline database"},
178	michael	2916	{"klinefile", &ConfigFileEntry.klinefile,
179	michael	1718	STRING, "File to use for kline database"},
180			{"dlinefile", &ConfigFileEntry.dlinefile,
181			STRING, "File to use for dline database"},
182	michael	2916	{"xlinefile", &ConfigFileEntry.xlinefile,
183	michael	1718	STRING, "File to use for xline database"},
184			{"resvfile", &ConfigFileEntry.resvfile,
185			STRING, "File to use for resv database"},
186	michael	2916	{"logfile", &logFileName,
187	adx	30	STRING, "File to use for ircd.log"},
188			{"pidfile", &pidFileName,
189			STRING, "File to use for process ID"},
190	michael	2916	{"foreground", &server_state.foreground,
191	adx	30	YESNO, "Run in foreground (don't detach)"},
192	michael	2916	{"version", &printVersion,
193	adx	30	YESNO, "Print version and exit"},
194			{"help", NULL, USAGE, "Print this text"},
195			{NULL, NULL, STRING, NULL},
196			};
197
198			void
199			set_time(void)
200			{
201	michael	2978	struct timeval newtime = { .tv_sec = 0, .tv_usec = 0 };
202	adx	30
203			if (gettimeofday(&newtime, NULL) == -1)
204			{
205	michael	1247	ilog(LOG_TYPE_IRCD, "Clock Failure (%s), TS can be corrupted",
206	adx	30	strerror(errno));
207	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
208	adx	30	"Clock Failure (%s), TS can be corrupted",
209			strerror(errno));
210	michael	3167	server_die("Clock Failure", 1);
211	adx	30	}
212
213			if (newtime.tv_sec < CurrentTime)
214			{
215	michael	2980	ilog(LOG_TYPE_IRCD, "System clock is running backwards - (%lu < %lu)",
216			(unsigned long)newtime.tv_sec, (unsigned long)CurrentTime);
217			sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE,
218			"System clock is running backwards - (%lu < %lu)",
219			(unsigned long)newtime.tv_sec,
220			(unsigned long)CurrentTime);
221	adx	30	set_back_events(CurrentTime - newtime.tv_sec);
222			}
223
224			SystemTime.tv_sec = newtime.tv_sec;
225			SystemTime.tv_usec = newtime.tv_usec;
226			}
227
228			static void
229			io_loop(void)
230			{
231	michael	3215	while (1)
232	adx	30	{
233			if (listing_client_list.head)
234			{
235			dlink_node ptr = NULL, ptr_next = NULL;
236			DLINK_FOREACH_SAFE(ptr, ptr_next, listing_client_list.head)
237	michael	3288	safe_list_channels(ptr->data, 0);
238	adx	30	}
239
240	michael	4094	/* Run pending events */
241			event_run();
242	adx	30
243			comm_select();
244			exit_aborted_clients();
245			free_exited_clients();
246
247			/* Check to see whether we have to rehash the configuration .. */
248			if (dorehash)
249			{
250			rehash(1);
251			dorehash = 0;
252			}
253	michael	3215
254	adx	30	if (doremotd)
255			{
256	michael	2150	motd_recache();
257	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
258	michael	3065	"Got signal SIGUSR1, reloading motd file(s)");
259	adx	30	doremotd = 0;
260			}
261			}
262			}
263
264			/* initalialize_global_set_options()
265			*
266			* inputs - none
267			* output - none
268	michael	2916	* side effects - This sets all global set options needed
269	adx	30	*/
270			static void
271			initialize_global_set_options(void)
272			{
273			memset(&GlobalSetOptions, 0, sizeof(GlobalSetOptions));
274
275			GlobalSetOptions.autoconn = 1;
276			GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
277			GlobalSetOptions.spam_num = MAX_JOIN_LEAVE_COUNT;
278
279			if (ConfigFileEntry.default_floodcount)
280			GlobalSetOptions.floodcount = ConfigFileEntry.default_floodcount;
281			else
282			GlobalSetOptions.floodcount = 10;
283
284			/* XXX I have no idea what to try here - Dianora */
285			GlobalSetOptions.joinfloodcount = 16;
286			GlobalSetOptions.joinfloodtime = 8;
287
288			split_servers = ConfigChannel.default_split_server_count;
289			split_users = ConfigChannel.default_split_user_count;
290
291			if (split_users && split_servers && (ConfigChannel.no_create_on_split \|\|
292			ConfigChannel.no_join_on_split))
293			{
294			splitmode = 1;
295			splitchecking = 1;
296			}
297
298			GlobalSetOptions.ident_timeout = IDENT_TIMEOUT;
299			/* End of global set options */
300			}
301
302			/* initialize_server_capabs()
303			*
304			* inputs - none
305			* output - none
306			*/
307			static void
308			initialize_server_capabs(void)
309			{
310			add_capability("QS", CAP_QS, 1);
311			add_capability("EOB", CAP_EOB, 1);
312	michael	1117	add_capability("TS6", CAP_TS6, 0);
313	adx	30	add_capability("CLUSTER", CAP_CLUSTER, 1);
314	michael	1196	add_capability("SVS", CAP_SVS, 1);
315	michael	3267	add_capability("CHW", CAP_CHW, 1);
316	adx	30	add_capability("HOPS", CAP_HOPS, 1);
317			}
318
319			/* write_pidfile()
320			*
321			* inputs - filename+path of pid file
322			* output - NONE
323			* side effects - write the pid of the ircd to filename
324			*/
325			static void
326			write_pidfile(const char *filename)
327			{
328	michael	1325	FILE *fb;
329	adx	30
330	michael	1325	if ((fb = fopen(filename, "w")))
331	adx	30	{
332	michael	2691	char buff[IRCD_BUFSIZE];
333	adx	30	unsigned int pid = (unsigned int)getpid();
334
335	michael	1325	snprintf(buff, sizeof(buff), "%u\n", pid);
336
337			if ((fputs(buff, fb) == -1))
338	michael	1247	ilog(LOG_TYPE_IRCD, "Error writing %u to pid file %s (%s)",
339	adx	30	pid, filename, strerror(errno));
340
341	michael	1325	fclose(fb);
342	adx	30	}
343			else
344			{
345	michael	1247	ilog(LOG_TYPE_IRCD, "Error opening pid file %s", filename);
346	adx	30	}
347			}
348
349			/* check_pidfile()
350			*
351			* inputs - filename+path of pid file
352			* output - none
353			* side effects - reads pid from pidfile and checks if ircd is in process
354			* list. if it is, gracefully exits
355			* -kre
356			*/
357			static void
358			check_pidfile(const char *filename)
359			{
360	michael	1325	FILE *fb;
361	michael	2691	char buff[IRCD_BUFSIZE];
362	adx	30	pid_t pidfromfile;
363
364			/* Don't do logging here, since we don't have log() initialised */
365	michael	1325	if ((fb = fopen(filename, "r")))
366	adx	30	{
367	michael	1325	if (fgets(buff, 20, fb) == NULL)
368	adx	30	{
369			/* log(L_ERROR, "Error reading from pid file %s (%s)", filename,
370			* strerror(errno));
371			*/
372			}
373			else
374			{
375			pidfromfile = atoi(buff);
376
377			if (!kill(pidfromfile, 0))
378			{
379			/* log(L_ERROR, "Server is already running"); */
380			printf("ircd: daemon is already running\n");
381			exit(-1);
382			}
383			}
384
385	michael	1325	fclose(fb);
386	adx	30	}
387			else if (errno != ENOENT)
388			{
389			/* log(L_ERROR, "Error opening pid file %s", filename); */
390			}
391			}
392
393			/* setup_corefile()
394			*
395			* inputs - nothing
396			* output - nothing
397			* side effects - setups corefile to system limits.
398			* -kre
399			*/
400			static void
401			setup_corefile(void)
402			{
403			#ifdef HAVE_SYS_RESOURCE_H
404			struct rlimit rlim; /* resource limits */
405
406			/* Set corefilesize to maximum */
407			if (!getrlimit(RLIMIT_CORE, &rlim))
408			{
409			rlim.rlim_cur = rlim.rlim_max;
410			setrlimit(RLIMIT_CORE, &rlim);
411			}
412			#endif
413			}
414
415	michael	2228	#ifdef HAVE_LIBCRYPTO
416			static int
417			always_accept_verify_cb(int preverify_ok, X509_STORE_CTX *x509_ctx)
418			{
419			return 1;
420			}
421			#endif
422
423	adx	30	/* init_ssl()
424			*
425			* inputs - nothing
426			* output - nothing
427			* side effects - setups SSL context.
428			*/
429			static void
430	michael	1798	ssl_init(void)
431	adx	30	{
432			#ifdef HAVE_LIBCRYPTO
433	michael	2914	const unsigned char session_id[] = "ircd-hybrid";
434
435	adx	30	SSL_load_error_strings();
436			SSLeay_add_ssl_algorithms();
437
438	michael	967	if ((ServerInfo.server_ctx = SSL_CTX_new(SSLv23_server_method())) == NULL)
439	adx	30	{
440			const char *s;
441
442	michael	1303	fprintf(stderr, "ERROR: Could not initialize the SSL Server context -- %s\n",
443	adx	30	s = ERR_lib_error_string(ERR_get_error()));
444	michael	1303	ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Server context -- %s\n", s);
445	adx	30	}
446
447	michael	1316	SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_NO_SSLv2\|SSL_OP_NO_SSLv3\|SSL_OP_NO_TLSv1);
448	michael	4073	SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_TLS_ROLLBACK_BUG);
449	michael	2228	SSL_CTX_set_verify(ServerInfo.server_ctx, SSL_VERIFY_PEER\|SSL_VERIFY_CLIENT_ONCE,
450			always_accept_verify_cb);
451	michael	2914	SSL_CTX_set_session_id_context(ServerInfo.server_ctx, session_id, sizeof(session_id) - 1);
452	adx	30
453	michael	4070	#if OPENSSL_VERSION_NUMBER >= 0x1000005FL && !defined(OPENSSL_NO_ECDH)
454			{
455			EC_KEY *key = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);
456
457			if (key)
458			{
459			SSL_CTX_set_tmp_ecdh(ServerInfo.server_ctx, key);
460			EC_KEY_free(key);
461			}
462			}
463
464			SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_SINGLE_ECDH_USE);
465			#endif
466
467	michael	1303	if ((ServerInfo.client_ctx = SSL_CTX_new(SSLv23_client_method())) == NULL)
468			{
469			const char *s;
470
471			fprintf(stderr, "ERROR: Could not initialize the SSL Client context -- %s\n",
472			s = ERR_lib_error_string(ERR_get_error()));
473			ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Client context -- %s\n", s);
474			}
475
476	michael	1316	SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_NO_SSLv2\|SSL_OP_NO_SSLv3\|SSL_OP_NO_TLSv1);
477	michael	4073	SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_TLS_ROLLBACK_BUG);
478	michael	2253	SSL_CTX_set_verify(ServerInfo.client_ctx, SSL_VERIFY_PEER\|SSL_VERIFY_CLIENT_ONCE,
479	michael	2228	always_accept_verify_cb);
480	adx	30	#endif /* HAVE_LIBCRYPTO */
481			}
482
483			int
484			main(int argc, char *argv[])
485			{
486	michael	2253	/* Check to see if the user is running us as root, which is a nono */
487	adx	30	if (geteuid() == 0)
488			{
489	michael	3525	fprintf(stderr, "ERROR: This server won't run as root/superuser\n");
490	michael	982	return -1;
491	adx	30	}
492
493			/* Setup corefile size immediately after boot -kre */
494			setup_corefile();
495
496			/* save server boot time right away, so getrusage works correctly */
497			set_time();
498
499	michael	982	/* It ain't random, but it ought to be a little harder to guess */
500			init_genrand(SystemTime.tv_sec ^ (SystemTime.tv_usec \| (getpid() << 20)));
501
502	adx	30	me.localClient = &meLocalUser;
503	michael	2253	dlinkAdd(&me, &me.node, &global_client_list); /* Pointer to beginning
504	adx	30	of Client list */
505	michael	4080	ConfigLoggingEntry.use_logging = 1;
506	adx	30	ConfigFileEntry.dpath = DPATH;
507	michael	3239	ConfigFileEntry.spath = SPATH;
508			ConfigFileEntry.mpath = MPATH;
509	michael	1702	ConfigFileEntry.configfile = CPATH; /* Server configuration file */
510			ConfigFileEntry.klinefile = KPATH; /* Server kline file */
511	michael	1718	ConfigFileEntry.glinefile = GPATH; /* Server gline file */
512	michael	1702	ConfigFileEntry.xlinefile = XPATH; /* Server xline file */
513			ConfigFileEntry.dlinefile = DLPATH; /* dline file */
514			ConfigFileEntry.resvfile = RESVPATH; /* resv file */
515
516	adx	30	myargv = argv;
517			umask(077); /* better safe than sorry --SRB */
518
519			parseargs(&argc, &argv, myopts);
520
521			if (printVersion)
522			{
523	michael	2646	printf("ircd: version %s(%s)\n", ircd_version, serno);
524	adx	30	exit(EXIT_SUCCESS);
525			}
526
527			if (chdir(ConfigFileEntry.dpath))
528			{
529			perror("chdir");
530			exit(EXIT_FAILURE);
531			}
532
533	michael	1798	ssl_init();
534	adx	30
535			if (!server_state.foreground)
536			{
537			make_daemon();
538			close_standard_fds(); /* this needs to be before init_netio()! */
539			}
540			else
541			print_startup(getpid());
542
543			setup_signals();
544
545			/* We need this to initialise the fd array before anything else */
546			fdlist_init();
547	michael	1831	log_set_file(LOG_TYPE_IRCD, 0, logFileName);
548	adx	30	check_can_use_v6();
549	michael	2632	init_netio(); /* This needs to be setup early ! -- adrian */
550	michael	2253
551	adx	30	/* Check if there is pidfile and daemon already running */
552			check_pidfile(pidFileName);
553
554	michael	1654	mp_pool_init();
555	adx	30	init_dlink_nodes();
556	michael	2159	init_isupport();
557	adx	30	dbuf_init();
558	michael	1798	hash_init();
559	adx	30	init_ip_hash_table(); /* client host ip hash table */
560			init_host_hash(); /* Host-hashtable. */
561	michael	1798	client_init();
562	michael	1632	class_init();
563	michael	1358	whowas_init();
564	michael	876	watch_init();
565	michael	1798	auth_init(); /* Initialise the auth code */
566	michael	998	init_resolver(); /* Needs to be setup before the io loop */
567	michael	1404	modules_init();
568	adx	30	read_conf_files(1); /* cold start init conf files */
569			init_uid();
570			initialize_server_capabs(); /* Set up default_server_capabs */
571			initialize_global_set_options();
572	michael	1798	channel_init();
573	michael	2216	read_links_file();
574	michael	2150	motd_init();
575	michael	1858	#ifdef HAVE_LIBGEOIP
576			geoip_ctx = GeoIP_new(GEOIP_MEMORY_CACHE);
577			#endif
578	adx	30
579	michael	1115	if (EmptyString(ServerInfo.sid))
580	adx	30	{
581	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server id specified in serverinfo block.");
582	adx	30	exit(EXIT_FAILURE);
583			}
584	michael	885
585	michael	1115	strlcpy(me.id, ServerInfo.sid, sizeof(me.id));
586
587			if (EmptyString(ServerInfo.name))
588			{
589	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server name specified in serverinfo block.");
590	michael	1115	exit(EXIT_FAILURE);
591			}
592
593	adx	30	strlcpy(me.name, ServerInfo.name, sizeof(me.name));
594
595			/* serverinfo{} description must exist. If not, error out.*/
596	michael	1115	if (EmptyString(ServerInfo.description))
597	adx	30	{
598	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server description specified in serverinfo block.");
599	adx	30	exit(EXIT_FAILURE);
600			}
601	michael	885
602	adx	30	strlcpy(me.info, ServerInfo.description, sizeof(me.info));
603
604	michael	1241	me.from = &me;
605			me.servptr = &me;
606			me.localClient->lasttime = CurrentTime;
607			me.localClient->since = CurrentTime;
608			me.localClient->firsttime = CurrentTime;
609	adx	30
610			SetMe(&me);
611			make_server(&me);
612
613	michael	1115	hash_add_id(&me);
614	adx	30	hash_add_client(&me);
615	michael	2916
616	adx	30	/* add ourselves to global_serv_list */
617			dlinkAdd(&me, make_dlink_node(), &global_serv_list);
618
619	michael	1622	load_kline_database();
620			load_dline_database();
621			load_gline_database();
622			load_xline_database();
623			load_resv_database();
624
625	adx	30	if (chdir(MODPATH))
626			{
627	michael	1247	ilog(LOG_TYPE_IRCD, "Could not load core modules. Terminating!");
628	adx	30	exit(EXIT_FAILURE);
629			}
630
631			load_all_modules(1);
632			load_conf_modules();
633			load_core_modules(1);
634	michael	1115
635	adx	30	/* Go back to DPATH after checking to see if we can chdir to MODPATH */
636	michael	1115	if (chdir(ConfigFileEntry.dpath))
637			{
638			perror("chdir");
639			exit(EXIT_FAILURE);
640			}
641	michael	1121
642	adx	30	/*
643			* assemble_umode_buffer() has to be called after
644			* reading conf/loading modules.
645			*/
646			assemble_umode_buffer();
647
648			write_pidfile(pidFileName);
649
650	michael	1247	ilog(LOG_TYPE_IRCD, "Server Ready");
651	adx	30
652	michael	4094	event_addish(&event_cleanup_glines, NULL);
653			event_addish(&event_cleanup_tklines, NULL);
654	adx	30
655			/* We want try_connections to be called as soon as possible now! -- adrian */
656			/* No, 'cause after a restart it would cause all sorts of nick collides */
657	michael	4094	event_addish(&event_try_connections, NULL);
658	adx	30
659			/* Setup the timeout check. I'll shift it later :) -- adrian */
660	michael	4094	event_addish(&event_comm_checktimeouts, NULL);
661	adx	30
662	michael	4094	event_addish(&event_save_all_databases, NULL);
663	michael	1625
664	adx	30	if (ConfigServerHide.links_delay > 0)
665	michael	4094	{
666			event_write_links_file.when = ConfigServerHide.links_delay;
667			event_addish(&event_write_links_file, NULL);
668			}
669	adx	30	else
670			ConfigServerHide.links_disabled = 1;
671
672			if (splitmode)
673	michael	4094	event_addish(&event_check_splitmode, NULL);
674	adx	30
675			io_loop();
676	michael	885	return 0;
677	adx	30	}