8.2.x/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 "s_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 "irc_string.h"
#include "ircd_signal.h"
#include "s_gline.h"
#include "motd.h"
#include "conf.h"
#include "hostmask.h"
#include "numeric.h"
#include "packet.h"
#include "parse.h"
#include "irc_res.h"
#include "restart.h"
#include "rng_mt.h"
#include "s_auth.h"
#include "s_bsd.h"
#include "log.h"
#include "s_misc.h"
#include "s_serv.h"      /* try_connections */
#include "send.h"
#include "whowas.h"
#include "modules.h"
#include "memory.h"
#include "mempool.h"
#include "hook.h"
#include "ircd_getopt.h"
#include "supported.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
 */
int default_server_capabs = 0;
unsigned int splitmode;
unsigned int splitchecking;
unsigned int split_users;
unsigned int split_servers;

/* Do klines the same way hybrid-6 did them, i.e. at the
 * top of the next io_loop instead of in the same loop as
 * the klines are being applied.
 *
 * This should fix strange CPU starvation as very indirectly reported.
 * (Why do you people not email bug reports? WHY? WHY?)
 *
 * - Dianora
 */

int rehashed_klines = 0;


/*
 * 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)
{
  static char to_send[IRCD_BUFSIZE];
  struct timeval newtime;
  newtime.tv_sec  = 0;
  newtime.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));
    restart("Clock Failure");
  }

  if (newtime.tv_sec < CurrentTime)
  {
    snprintf(to_send, sizeof(to_send),
             "System clock is running backwards - (%lu < %lu)",
             (unsigned long)newtime.tv_sec, (unsigned long)CurrentTime);
    report_error(L_ALL, to_send, me.name, 0);
    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 == 1)
  {
    /*
     * Maybe we want a flags word?
     * ie. if (REHASHED_KLINES(global_flags))
     * SET_REHASHED_KLINES(global_flags)
     * CLEAR_REHASHED_KLINES(global_flags)
     *
     * - Dianora
     */
    if (rehashed_klines)
    {
      check_conf_klines();
      rehashed_klines = 0;
    }

    if (listing_client_list.head)
    {
      dlink_node *ptr = NULL, *ptr_next = NULL;
      DLINK_FOREACH_SAFE(ptr, ptr_next, listing_client_list.head)
      {
        struct Client *client_p = ptr->data;
        assert(client_p->localClient->list_task);
        safe_list_channels(client_p, client_p->localClient->list_task, 0);
      }
    }

    /* Run pending events, then get the number of seconds to the next
     * event
     */
    while (eventNextTime() <= CurrentTime)
      eventRun();

    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 files");
      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("FAKEHOST", CAP_FAKEHOST, 1);
  add_capability("SVS", CAP_SVS, 1);
#ifdef HALFOPS
  add_capability("HOPS", CAP_HOPS, 1);
#endif
}

/* 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_OP_ALL);
  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 ((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_OP_ALL);
  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, "Don't run ircd as root!!!\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 */
  /* Initialise the channel capability usage counts... */
  init_chcap_usage_counts();

  ConfigFileEntry.dpath      = DPATH;
  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();

  /* Init the event subsystem */
  eventInit();

  /* 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");

  eventAddIsh("cleanup_glines", cleanup_glines, NULL, CLEANUP_GLINES_TIME);
  eventAddIsh("cleanup_tklines", cleanup_tklines, NULL, CLEANUP_TKLINES_TIME);

  /* 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 */
  eventAddIsh("try_connections", try_connections, NULL, STARTUP_CONNECTIONS_TIME);

  /* Setup the timeout check. I'll shift it later :)  -- adrian */
  eventAddIsh("comm_checktimeouts", comm_checktimeouts, NULL, 1);

  eventAddIsh("save_all_databases", save_all_databases, NULL, DATABASE_UPDATE_TIMEOUT);

  if (ConfigServerHide.links_delay > 0)
    eventAddIsh("write_links_file", write_links_file, NULL, ConfigServerHide.links_delay);
  else
    ConfigServerHide.links_disabled = 1;

  if (splitmode)
    eventAddIsh("check_splitmode", check_splitmode, NULL, 60);

  io_loop();
  return 0;
}
Revision:	2916
Committed:	Sat Jan 25 21:09:18 2014 UTC (12 years, 6 months ago) by michael
Content type:	text/x-csrc
Original Path:	*ircd-hybrid/trunk/src/ircd.c*
File size:	17220 byte(s)
Log Message:	- Clean up all files in include/ (fixed indentation, removed whitespaces/tabs) - Fixed copyright years
#	User	Rev	Content
1	adx	30	/*
2	michael	2916	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	adx	30	*
4	michael	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			#include "s_user.h"
29	michael	1011	#include "list.h"
30	adx	30	#include "ircd.h"
31			#include "channel.h"
32			#include "channel_mode.h"
33			#include "client.h"
34			#include "event.h"
35			#include "fdlist.h"
36			#include "hash.h"
37			#include "irc_string.h"
38			#include "ircd_signal.h"
39			#include "s_gline.h"
40			#include "motd.h"
41	michael	1632	#include "conf.h"
42	adx	30	#include "hostmask.h"
43			#include "numeric.h"
44			#include "packet.h"
45			#include "parse.h"
46			#include "irc_res.h"
47			#include "restart.h"
48	michael	982	#include "rng_mt.h"
49	adx	30	#include "s_auth.h"
50			#include "s_bsd.h"
51	michael	1309	#include "log.h"
52	adx	30	#include "s_misc.h"
53			#include "s_serv.h" /* try_connections */
54			#include "send.h"
55			#include "whowas.h"
56			#include "modules.h"
57			#include "memory.h"
58	michael	1654	#include "mempool.h"
59	adx	30	#include "hook.h"
60			#include "ircd_getopt.h"
61			#include "supported.h"
62	michael	876	#include "watch.h"
63	michael	1622	#include "conf_db.h"
64	michael	1632	#include "conf_class.h"
65	adx	30
66	michael	1858
67			#ifdef HAVE_LIBGEOIP
68			GeoIP *geoip_ctx;
69			#endif
70	michael	2872
71	adx	30	/* /quote set variables */
72			struct SetOptions GlobalSetOptions;
73	michael	2872	struct Counter Count;
74			struct ServerState_t server_state;
75	michael	896	struct ServerStatistics ServerStats;
76	adx	30	struct timeval SystemTime;
77			struct Client me; /* That's me */
78			struct LocalUser meLocalUser; /* That's also part of me */
79
80			const char *logFileName = LPATH;
81			const char *pidFileName = PPATH;
82
83			char **myargv;
84
85			int dorehash = 0;
86			int doremotd = 0;
87
88			/* Set to zero because it should be initialized later using
89			* initialize_server_capabs
90			*/
91			int default_server_capabs = 0;
92	michael	1013	unsigned int splitmode;
93			unsigned int splitchecking;
94			unsigned int split_users;
95	adx	30	unsigned int split_servers;
96
97			/* Do klines the same way hybrid-6 did them, i.e. at the
98			* top of the next io_loop instead of in the same loop as
99			* the klines are being applied.
100			*
101			* This should fix strange CPU starvation as very indirectly reported.
102			* (Why do you people not email bug reports? WHY? WHY?)
103			*
104			* - Dianora
105			*/
106
107			int rehashed_klines = 0;
108
109
110			/*
111			* print_startup - print startup information
112			*/
113			static void
114			print_startup(int pid)
115			{
116	michael	2646	printf("ircd: version %s(%s)\n", ircd_version, serno);
117	adx	30	printf("ircd: pid %d\n", pid);
118			printf("ircd: running in %s mode from %s\n", !server_state.foreground ? "background"
119			: "foreground", ConfigFileEntry.dpath);
120			}
121
122			static void
123			make_daemon(void)
124			{
125			int pid;
126
127			if ((pid = fork()) < 0)
128			{
129			perror("fork");
130			exit(EXIT_FAILURE);
131			}
132			else if (pid > 0)
133			{
134			print_startup(pid);
135			exit(EXIT_SUCCESS);
136			}
137
138			setsid();
139			}
140
141			static int printVersion = 0;
142
143	michael	1357	static struct lgetopt myopts[] = {
144	michael	2916	{"configfile", &ConfigFileEntry.configfile,
145	adx	30	STRING, "File to use for ircd.conf"},
146	michael	1718	{"glinefile", &ConfigFileEntry.glinefile,
147			STRING, "File to use for gline database"},
148	michael	2916	{"klinefile", &ConfigFileEntry.klinefile,
149	michael	1718	STRING, "File to use for kline database"},
150			{"dlinefile", &ConfigFileEntry.dlinefile,
151			STRING, "File to use for dline database"},
152	michael	2916	{"xlinefile", &ConfigFileEntry.xlinefile,
153	michael	1718	STRING, "File to use for xline database"},
154			{"resvfile", &ConfigFileEntry.resvfile,
155			STRING, "File to use for resv database"},
156	michael	2916	{"logfile", &logFileName,
157	adx	30	STRING, "File to use for ircd.log"},
158			{"pidfile", &pidFileName,
159			STRING, "File to use for process ID"},
160	michael	2916	{"foreground", &server_state.foreground,
161	adx	30	YESNO, "Run in foreground (don't detach)"},
162	michael	2916	{"version", &printVersion,
163	adx	30	YESNO, "Print version and exit"},
164			{"help", NULL, USAGE, "Print this text"},
165			{NULL, NULL, STRING, NULL},
166			};
167
168			void
169			set_time(void)
170			{
171	michael	2691	static char to_send[IRCD_BUFSIZE];
172	adx	30	struct timeval newtime;
173			newtime.tv_sec = 0;
174			newtime.tv_usec = 0;
175
176			if (gettimeofday(&newtime, NULL) == -1)
177			{
178	michael	1247	ilog(LOG_TYPE_IRCD, "Clock Failure (%s), TS can be corrupted",
179	adx	30	strerror(errno));
180	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
181	adx	30	"Clock Failure (%s), TS can be corrupted",
182			strerror(errno));
183			restart("Clock Failure");
184			}
185
186			if (newtime.tv_sec < CurrentTime)
187			{
188	michael	1124	snprintf(to_send, sizeof(to_send),
189			"System clock is running backwards - (%lu < %lu)",
190			(unsigned long)newtime.tv_sec, (unsigned long)CurrentTime);
191	adx	30	report_error(L_ALL, to_send, me.name, 0);
192			set_back_events(CurrentTime - newtime.tv_sec);
193			}
194
195			SystemTime.tv_sec = newtime.tv_sec;
196			SystemTime.tv_usec = newtime.tv_usec;
197			}
198
199			static void
200			io_loop(void)
201			{
202			while (1 == 1)
203			{
204			/*
205			* Maybe we want a flags word?
206	michael	2916	* ie. if (REHASHED_KLINES(global_flags))
207	adx	30	* SET_REHASHED_KLINES(global_flags)
208			* CLEAR_REHASHED_KLINES(global_flags)
209			*
210			* - Dianora
211			*/
212			if (rehashed_klines)
213			{
214			check_conf_klines();
215			rehashed_klines = 0;
216			}
217
218			if (listing_client_list.head)
219			{
220			dlink_node ptr = NULL, ptr_next = NULL;
221			DLINK_FOREACH_SAFE(ptr, ptr_next, listing_client_list.head)
222			{
223			struct Client *client_p = ptr->data;
224			assert(client_p->localClient->list_task);
225	michael	896	safe_list_channels(client_p, client_p->localClient->list_task, 0);
226	adx	30	}
227			}
228
229			/* Run pending events, then get the number of seconds to the next
230			* event
231			*/
232			while (eventNextTime() <= CurrentTime)
233			eventRun();
234
235			comm_select();
236			exit_aborted_clients();
237			free_exited_clients();
238
239			/* Check to see whether we have to rehash the configuration .. */
240			if (dorehash)
241			{
242			rehash(1);
243			dorehash = 0;
244			}
245			if (doremotd)
246			{
247	michael	2150	motd_recache();
248	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
249	michael	2150	"Got signal SIGUSR1, reloading motd files");
250	adx	30	doremotd = 0;
251			}
252			}
253			}
254
255			/* initalialize_global_set_options()
256			*
257			* inputs - none
258			* output - none
259	michael	2916	* side effects - This sets all global set options needed
260	adx	30	*/
261			static void
262			initialize_global_set_options(void)
263			{
264			memset(&GlobalSetOptions, 0, sizeof(GlobalSetOptions));
265
266			GlobalSetOptions.autoconn = 1;
267			GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
268			GlobalSetOptions.spam_num = MAX_JOIN_LEAVE_COUNT;
269
270			if (ConfigFileEntry.default_floodcount)
271			GlobalSetOptions.floodcount = ConfigFileEntry.default_floodcount;
272			else
273			GlobalSetOptions.floodcount = 10;
274
275			/* XXX I have no idea what to try here - Dianora */
276			GlobalSetOptions.joinfloodcount = 16;
277			GlobalSetOptions.joinfloodtime = 8;
278
279			split_servers = ConfigChannel.default_split_server_count;
280			split_users = ConfigChannel.default_split_user_count;
281
282			if (split_users && split_servers && (ConfigChannel.no_create_on_split \|\|
283			ConfigChannel.no_join_on_split))
284			{
285			splitmode = 1;
286			splitchecking = 1;
287			}
288
289			GlobalSetOptions.ident_timeout = IDENT_TIMEOUT;
290			/* End of global set options */
291			}
292
293			/* initialize_server_capabs()
294			*
295			* inputs - none
296			* output - none
297			*/
298			static void
299			initialize_server_capabs(void)
300			{
301			add_capability("QS", CAP_QS, 1);
302			add_capability("EOB", CAP_EOB, 1);
303	michael	1117	add_capability("TS6", CAP_TS6, 0);
304	adx	30	add_capability("CLUSTER", CAP_CLUSTER, 1);
305	michael	2330	// add_capability("FAKEHOST", CAP_FAKEHOST, 1);
306	michael	1196	add_capability("SVS", CAP_SVS, 1);
307	adx	30	#ifdef HALFOPS
308			add_capability("HOPS", CAP_HOPS, 1);
309			#endif
310			}
311
312			/* write_pidfile()
313			*
314			* inputs - filename+path of pid file
315			* output - NONE
316			* side effects - write the pid of the ircd to filename
317			*/
318			static void
319			write_pidfile(const char *filename)
320			{
321	michael	1325	FILE *fb;
322	adx	30
323	michael	1325	if ((fb = fopen(filename, "w")))
324	adx	30	{
325	michael	2691	char buff[IRCD_BUFSIZE];
326	adx	30	unsigned int pid = (unsigned int)getpid();
327
328	michael	1325	snprintf(buff, sizeof(buff), "%u\n", pid);
329
330			if ((fputs(buff, fb) == -1))
331	michael	1247	ilog(LOG_TYPE_IRCD, "Error writing %u to pid file %s (%s)",
332	adx	30	pid, filename, strerror(errno));
333
334	michael	1325	fclose(fb);
335	adx	30	}
336			else
337			{
338	michael	1247	ilog(LOG_TYPE_IRCD, "Error opening pid file %s", filename);
339	adx	30	}
340			}
341
342			/* check_pidfile()
343			*
344			* inputs - filename+path of pid file
345			* output - none
346			* side effects - reads pid from pidfile and checks if ircd is in process
347			* list. if it is, gracefully exits
348			* -kre
349			*/
350			static void
351			check_pidfile(const char *filename)
352			{
353	michael	1325	FILE *fb;
354	michael	2691	char buff[IRCD_BUFSIZE];
355	adx	30	pid_t pidfromfile;
356
357			/* Don't do logging here, since we don't have log() initialised */
358	michael	1325	if ((fb = fopen(filename, "r")))
359	adx	30	{
360	michael	1325	if (fgets(buff, 20, fb) == NULL)
361	adx	30	{
362			/* log(L_ERROR, "Error reading from pid file %s (%s)", filename,
363			* strerror(errno));
364			*/
365			}
366			else
367			{
368			pidfromfile = atoi(buff);
369
370			if (!kill(pidfromfile, 0))
371			{
372			/* log(L_ERROR, "Server is already running"); */
373			printf("ircd: daemon is already running\n");
374			exit(-1);
375			}
376			}
377
378	michael	1325	fclose(fb);
379	adx	30	}
380			else if (errno != ENOENT)
381			{
382			/* log(L_ERROR, "Error opening pid file %s", filename); */
383			}
384			}
385
386			/* setup_corefile()
387			*
388			* inputs - nothing
389			* output - nothing
390			* side effects - setups corefile to system limits.
391			* -kre
392			*/
393			static void
394			setup_corefile(void)
395			{
396			#ifdef HAVE_SYS_RESOURCE_H
397			struct rlimit rlim; /* resource limits */
398
399			/* Set corefilesize to maximum */
400			if (!getrlimit(RLIMIT_CORE, &rlim))
401			{
402			rlim.rlim_cur = rlim.rlim_max;
403			setrlimit(RLIMIT_CORE, &rlim);
404			}
405			#endif
406			}
407
408	michael	2228	#ifdef HAVE_LIBCRYPTO
409			static int
410			always_accept_verify_cb(int preverify_ok, X509_STORE_CTX *x509_ctx)
411			{
412			return 1;
413			}
414			#endif
415
416	adx	30	/* init_ssl()
417			*
418			* inputs - nothing
419			* output - nothing
420			* side effects - setups SSL context.
421			*/
422			static void
423	michael	1798	ssl_init(void)
424	adx	30	{
425			#ifdef HAVE_LIBCRYPTO
426	michael	2914	const unsigned char session_id[] = "ircd-hybrid";
427
428	adx	30	SSL_load_error_strings();
429			SSLeay_add_ssl_algorithms();
430
431	michael	967	if ((ServerInfo.server_ctx = SSL_CTX_new(SSLv23_server_method())) == NULL)
432	adx	30	{
433			const char *s;
434
435	michael	1303	fprintf(stderr, "ERROR: Could not initialize the SSL Server context -- %s\n",
436	adx	30	s = ERR_lib_error_string(ERR_get_error()));
437	michael	1303	ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Server context -- %s\n", s);
438	adx	30	}
439
440	michael	1316	SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_NO_SSLv2\|SSL_OP_NO_SSLv3\|SSL_OP_NO_TLSv1);
441	michael	967	SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_TLS_ROLLBACK_BUG\|SSL_OP_ALL);
442	michael	2228	SSL_CTX_set_verify(ServerInfo.server_ctx, SSL_VERIFY_PEER\|SSL_VERIFY_CLIENT_ONCE,
443			always_accept_verify_cb);
444	michael	2914	SSL_CTX_set_session_id_context(ServerInfo.server_ctx, session_id, sizeof(session_id) - 1);
445	adx	30
446	michael	1303	if ((ServerInfo.client_ctx = SSL_CTX_new(SSLv23_client_method())) == NULL)
447			{
448			const char *s;
449
450			fprintf(stderr, "ERROR: Could not initialize the SSL Client context -- %s\n",
451			s = ERR_lib_error_string(ERR_get_error()));
452			ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Client context -- %s\n", s);
453			}
454
455	michael	1316	SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_NO_SSLv2\|SSL_OP_NO_SSLv3\|SSL_OP_NO_TLSv1);
456	michael	1303	SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_TLS_ROLLBACK_BUG\|SSL_OP_ALL);
457	michael	2253	SSL_CTX_set_verify(ServerInfo.client_ctx, SSL_VERIFY_PEER\|SSL_VERIFY_CLIENT_ONCE,
458	michael	2228	always_accept_verify_cb);
459	adx	30	#endif /* HAVE_LIBCRYPTO */
460			}
461
462			int
463			main(int argc, char *argv[])
464			{
465	michael	2253	/* Check to see if the user is running us as root, which is a nono */
466	adx	30	if (geteuid() == 0)
467			{
468			fprintf(stderr, "Don't run ircd as root!!!\n");
469	michael	982	return -1;
470	adx	30	}
471
472			/* Setup corefile size immediately after boot -kre */
473			setup_corefile();
474
475			/* save server boot time right away, so getrusage works correctly */
476			set_time();
477
478	michael	982	/* It ain't random, but it ought to be a little harder to guess */
479			init_genrand(SystemTime.tv_sec ^ (SystemTime.tv_usec \| (getpid() << 20)));
480
481	adx	30	me.localClient = &meLocalUser;
482	michael	2253	dlinkAdd(&me, &me.node, &global_client_list); /* Pointer to beginning
483	adx	30	of Client list */
484			/* Initialise the channel capability usage counts... */
485			init_chcap_usage_counts();
486
487			ConfigFileEntry.dpath = DPATH;
488	michael	1702	ConfigFileEntry.configfile = CPATH; /* Server configuration file */
489			ConfigFileEntry.klinefile = KPATH; /* Server kline file */
490	michael	1718	ConfigFileEntry.glinefile = GPATH; /* Server gline file */
491	michael	1702	ConfigFileEntry.xlinefile = XPATH; /* Server xline file */
492			ConfigFileEntry.dlinefile = DLPATH; /* dline file */
493			ConfigFileEntry.resvfile = RESVPATH; /* resv file */
494
495	adx	30	myargv = argv;
496			umask(077); /* better safe than sorry --SRB */
497
498			parseargs(&argc, &argv, myopts);
499
500			if (printVersion)
501			{
502	michael	2646	printf("ircd: version %s(%s)\n", ircd_version, serno);
503	adx	30	exit(EXIT_SUCCESS);
504			}
505
506			if (chdir(ConfigFileEntry.dpath))
507			{
508			perror("chdir");
509			exit(EXIT_FAILURE);
510			}
511
512	michael	1798	ssl_init();
513	adx	30
514			if (!server_state.foreground)
515			{
516			make_daemon();
517			close_standard_fds(); /* this needs to be before init_netio()! */
518			}
519			else
520			print_startup(getpid());
521
522			setup_signals();
523
524			/* Init the event subsystem */
525			eventInit();
526	michael	2253
527	adx	30	/* We need this to initialise the fd array before anything else */
528			fdlist_init();
529	michael	1831	log_set_file(LOG_TYPE_IRCD, 0, logFileName);
530	adx	30	check_can_use_v6();
531	michael	2632	init_netio(); /* This needs to be setup early ! -- adrian */
532	michael	2253
533	adx	30	/* Check if there is pidfile and daemon already running */
534			check_pidfile(pidFileName);
535
536	michael	1654	mp_pool_init();
537	adx	30	init_dlink_nodes();
538	michael	2159	init_isupport();
539	adx	30	dbuf_init();
540	michael	1798	hash_init();
541	adx	30	init_ip_hash_table(); /* client host ip hash table */
542			init_host_hash(); /* Host-hashtable. */
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	1858	#ifdef HAVE_LIBGEOIP
558			geoip_ctx = GeoIP_new(GEOIP_MEMORY_CACHE);
559			#endif
560	adx	30
561	michael	1115	if (EmptyString(ServerInfo.sid))
562	adx	30	{
563	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server id specified in serverinfo block.");
564	adx	30	exit(EXIT_FAILURE);
565			}
566	michael	885
567	michael	1115	strlcpy(me.id, ServerInfo.sid, sizeof(me.id));
568
569			if (EmptyString(ServerInfo.name))
570			{
571	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server name specified in serverinfo block.");
572	michael	1115	exit(EXIT_FAILURE);
573			}
574
575	adx	30	strlcpy(me.name, ServerInfo.name, sizeof(me.name));
576
577			/* serverinfo{} description must exist. If not, error out.*/
578	michael	1115	if (EmptyString(ServerInfo.description))
579	adx	30	{
580	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server description specified in serverinfo block.");
581	adx	30	exit(EXIT_FAILURE);
582			}
583	michael	885
584	adx	30	strlcpy(me.info, ServerInfo.description, sizeof(me.info));
585
586	michael	1241	me.from = &me;
587			me.servptr = &me;
588			me.localClient->lasttime = CurrentTime;
589			me.localClient->since = CurrentTime;
590			me.localClient->firsttime = CurrentTime;
591	adx	30
592			SetMe(&me);
593			make_server(&me);
594
595	michael	1115	hash_add_id(&me);
596	adx	30	hash_add_client(&me);
597	michael	2916
598	adx	30	/* add ourselves to global_serv_list */
599			dlinkAdd(&me, make_dlink_node(), &global_serv_list);
600
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	if (chdir(MODPATH))
608			{
609	michael	1247	ilog(LOG_TYPE_IRCD, "Could not load core modules. Terminating!");
610	adx	30	exit(EXIT_FAILURE);
611			}
612
613			load_all_modules(1);
614			load_conf_modules();
615			load_core_modules(1);
616	michael	1115
617	adx	30	/* Go back to DPATH after checking to see if we can chdir to MODPATH */
618	michael	1115	if (chdir(ConfigFileEntry.dpath))
619			{
620			perror("chdir");
621			exit(EXIT_FAILURE);
622			}
623	michael	1121
624	adx	30	/*
625			* assemble_umode_buffer() has to be called after
626			* reading conf/loading modules.
627			*/
628			assemble_umode_buffer();
629
630			write_pidfile(pidFileName);
631
632	michael	1247	ilog(LOG_TYPE_IRCD, "Server Ready");
633	adx	30
634			eventAddIsh("cleanup_glines", cleanup_glines, NULL, CLEANUP_GLINES_TIME);
635			eventAddIsh("cleanup_tklines", cleanup_tklines, NULL, CLEANUP_TKLINES_TIME);
636
637			/* We want try_connections to be called as soon as possible now! -- adrian */
638			/* No, 'cause after a restart it would cause all sorts of nick collides */
639			eventAddIsh("try_connections", try_connections, NULL, STARTUP_CONNECTIONS_TIME);
640
641			/* Setup the timeout check. I'll shift it later :) -- adrian */
642			eventAddIsh("comm_checktimeouts", comm_checktimeouts, NULL, 1);
643
644	michael	1625	eventAddIsh("save_all_databases", save_all_databases, NULL, DATABASE_UPDATE_TIMEOUT);
645
646	adx	30	if (ConfigServerHide.links_delay > 0)
647			eventAddIsh("write_links_file", write_links_file, NULL, ConfigServerHide.links_delay);
648			else
649			ConfigServerHide.links_disabled = 1;
650
651			if (splitmode)
652			eventAddIsh("check_splitmode", check_splitmode, NULL, 60);
653
654			io_loop();
655	michael	885	return 0;
656	adx	30	}