trunk/src/ircd.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  ircd.c: Starts up and runs the ircd.
 *
 *  Copyright (C) 2002 by the past and present ircd coders, and others.
 *
 *  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
 *
 *  $Id$
 */

#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 "motd.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;

/* configuration set from ircd.conf */
struct config_file_entry ConfigFileEntry; 
/* server info set from ircd.conf */
struct server_info ServerInfo;
/* admin info set from ircd.conf */
struct admin_info AdminInfo = { NULL, NULL, NULL };
struct Counter Count = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
struct ServerState_t server_state = { 0 };
struct logging_entry ConfigLoggingEntry = { .use_logging = 1 };
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\n", ircd_version);
  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[200];
  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();
    send_queued_all();

    /* Check to see whether we have to rehash the configuration .. */
    if (dorehash)
    {
      rehash(1);
      dorehash = 0;
    }
    if (doremotd)
    {
      read_message_file(&ConfigFileEntry.motd);
      sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
                           "Got signal SIGUSR1, reloading ircd motd file");
      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_message_files()
 *
 * inputs       - none
 * output       - none
 * side effects - Set up all message files needed, motd etc.
 */
static void
initialize_message_files(void)
{
  init_message_file(USER_MOTD, MPATH, &ConfigFileEntry.motd);
  init_message_file(USER_LINKS, LIPATH, &ConfigFileEntry.linksfile);

  read_message_file(&ConfigFileEntry.motd);
  read_message_file(&ConfigFileEntry.linksfile);

  init_isupport();
}

/* 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);
#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[32];
    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[32];
  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
}

/* 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 ((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_NONE, NULL);

  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_NONE, NULL);
#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\n", ircd_version);
    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_comm();         /* 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();
  initialize_message_files();
  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();
#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:	1858
Committed:	Thu Apr 25 15:00:52 2013 UTC (12 years, 4 months ago) by michael
Content type:	text/x-csrc
File size:	17542 byte(s)
Log Message:	- Added basic support for libGeoIP - Added exempt configuration option to resv{} blocks
#	User	Rev	Content
1	adx	30	/*
2			* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3			* ircd.c: Starts up and runs the ircd.
4			*
5			* Copyright (C) 2002 by the past and present ircd coders, and others.
6			*
7			* This program is free software; you can redistribute it and/or modify
8			* it under the terms of the GNU General Public License as published by
9			* the Free Software Foundation; either version 2 of the License, or
10			* (at your option) any later version.
11			*
12			* This program is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			* GNU General Public License for more details.
16			*
17			* You should have received a copy of the GNU General Public License
18			* along with this program; if not, write to the Free Software
19			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20			* USA
21			*
22	knight	31	* $Id$
23	adx	30	*/
24
25			#include "stdinc.h"
26			#include "s_user.h"
27	michael	1011	#include "list.h"
28	adx	30	#include "ircd.h"
29			#include "channel.h"
30			#include "channel_mode.h"
31			#include "client.h"
32			#include "event.h"
33			#include "fdlist.h"
34			#include "hash.h"
35			#include "irc_string.h"
36			#include "ircd_signal.h"
37			#include "s_gline.h"
38			#include "motd.h"
39	michael	1632	#include "conf.h"
40	adx	30	#include "hostmask.h"
41			#include "numeric.h"
42			#include "packet.h"
43			#include "parse.h"
44			#include "irc_res.h"
45			#include "restart.h"
46	michael	982	#include "rng_mt.h"
47	adx	30	#include "s_auth.h"
48			#include "s_bsd.h"
49	michael	1309	#include "log.h"
50	adx	30	#include "s_misc.h"
51			#include "s_serv.h" /* try_connections */
52			#include "send.h"
53			#include "whowas.h"
54			#include "modules.h"
55			#include "memory.h"
56	michael	1654	#include "mempool.h"
57	adx	30	#include "hook.h"
58			#include "ircd_getopt.h"
59			#include "motd.h"
60			#include "supported.h"
61	michael	876	#include "watch.h"
62	michael	1622	#include "conf_db.h"
63	michael	1632	#include "conf_class.h"
64	adx	30
65	michael	1858
66			#ifdef HAVE_LIBGEOIP
67			GeoIP *geoip_ctx;
68			#endif
69	adx	30	/* /quote set variables */
70			struct SetOptions GlobalSetOptions;
71
72			/* configuration set from ircd.conf */
73			struct config_file_entry ConfigFileEntry;
74			/* server info set from ircd.conf */
75			struct server_info ServerInfo;
76			/* admin info set from ircd.conf */
77			struct admin_info AdminInfo = { NULL, NULL, NULL };
78	michael	1145	struct Counter Count = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
79	adx	30	struct ServerState_t server_state = { 0 };
80	michael	1324	struct logging_entry ConfigLoggingEntry = { .use_logging = 1 };
81	michael	896	struct ServerStatistics ServerStats;
82	adx	30	struct timeval SystemTime;
83			struct Client me; /* That's me */
84			struct LocalUser meLocalUser; /* That's also part of me */
85
86			const char *logFileName = LPATH;
87			const char *pidFileName = PPATH;
88
89			char **myargv;
90
91			int dorehash = 0;
92			int doremotd = 0;
93
94			/* Set to zero because it should be initialized later using
95			* initialize_server_capabs
96			*/
97			int default_server_capabs = 0;
98	michael	1013	unsigned int splitmode;
99			unsigned int splitchecking;
100			unsigned int split_users;
101	adx	30	unsigned int split_servers;
102
103			/* Do klines the same way hybrid-6 did them, i.e. at the
104			* top of the next io_loop instead of in the same loop as
105			* the klines are being applied.
106			*
107			* This should fix strange CPU starvation as very indirectly reported.
108			* (Why do you people not email bug reports? WHY? WHY?)
109			*
110			* - Dianora
111			*/
112
113			int rehashed_klines = 0;
114
115
116			/*
117			* print_startup - print startup information
118			*/
119			static void
120			print_startup(int pid)
121			{
122			printf("ircd: version %s\n", ircd_version);
123			printf("ircd: pid %d\n", pid);
124			printf("ircd: running in %s mode from %s\n", !server_state.foreground ? "background"
125			: "foreground", ConfigFileEntry.dpath);
126			}
127
128			static void
129			make_daemon(void)
130			{
131			int pid;
132
133			if ((pid = fork()) < 0)
134			{
135			perror("fork");
136			exit(EXIT_FAILURE);
137			}
138			else if (pid > 0)
139			{
140			print_startup(pid);
141			exit(EXIT_SUCCESS);
142			}
143
144			setsid();
145			}
146
147			static int printVersion = 0;
148
149	michael	1357	static struct lgetopt myopts[] = {
150	adx	30	{"configfile", &ConfigFileEntry.configfile,
151			STRING, "File to use for ircd.conf"},
152	michael	1718	{"glinefile", &ConfigFileEntry.glinefile,
153			STRING, "File to use for gline database"},
154	adx	30	{"klinefile", &ConfigFileEntry.klinefile,
155	michael	1718	STRING, "File to use for kline database"},
156			{"dlinefile", &ConfigFileEntry.dlinefile,
157			STRING, "File to use for dline database"},
158	adx	30	{"xlinefile", &ConfigFileEntry.xlinefile,
159	michael	1718	STRING, "File to use for xline database"},
160			{"resvfile", &ConfigFileEntry.resvfile,
161			STRING, "File to use for resv database"},
162	adx	30	{"logfile", &logFileName,
163			STRING, "File to use for ircd.log"},
164			{"pidfile", &pidFileName,
165			STRING, "File to use for process ID"},
166			{"foreground", &server_state.foreground,
167			YESNO, "Run in foreground (don't detach)"},
168			{"version", &printVersion,
169			YESNO, "Print version and exit"},
170			{"help", NULL, USAGE, "Print this text"},
171			{NULL, NULL, STRING, NULL},
172			};
173
174			void
175			set_time(void)
176			{
177			static char to_send[200];
178			struct timeval newtime;
179			newtime.tv_sec = 0;
180			newtime.tv_usec = 0;
181
182			if (gettimeofday(&newtime, NULL) == -1)
183			{
184	michael	1247	ilog(LOG_TYPE_IRCD, "Clock Failure (%s), TS can be corrupted",
185	adx	30	strerror(errno));
186	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
187	adx	30	"Clock Failure (%s), TS can be corrupted",
188			strerror(errno));
189			restart("Clock Failure");
190			}
191
192			if (newtime.tv_sec < CurrentTime)
193			{
194	michael	1124	snprintf(to_send, sizeof(to_send),
195			"System clock is running backwards - (%lu < %lu)",
196			(unsigned long)newtime.tv_sec, (unsigned long)CurrentTime);
197	adx	30	report_error(L_ALL, to_send, me.name, 0);
198			set_back_events(CurrentTime - newtime.tv_sec);
199			}
200
201			SystemTime.tv_sec = newtime.tv_sec;
202			SystemTime.tv_usec = newtime.tv_usec;
203			}
204
205			static void
206			io_loop(void)
207			{
208			while (1 == 1)
209			{
210			/*
211			* Maybe we want a flags word?
212			* ie. if (REHASHED_KLINES(global_flags))
213			* SET_REHASHED_KLINES(global_flags)
214			* CLEAR_REHASHED_KLINES(global_flags)
215			*
216			* - Dianora
217			*/
218			if (rehashed_klines)
219			{
220			check_conf_klines();
221			rehashed_klines = 0;
222			}
223
224			if (listing_client_list.head)
225			{
226			dlink_node ptr = NULL, ptr_next = NULL;
227			DLINK_FOREACH_SAFE(ptr, ptr_next, listing_client_list.head)
228			{
229			struct Client *client_p = ptr->data;
230			assert(client_p->localClient->list_task);
231	michael	896	safe_list_channels(client_p, client_p->localClient->list_task, 0);
232	adx	30	}
233			}
234
235			/* Run pending events, then get the number of seconds to the next
236			* event
237			*/
238			while (eventNextTime() <= CurrentTime)
239			eventRun();
240
241			comm_select();
242			exit_aborted_clients();
243			free_exited_clients();
244			send_queued_all();
245
246			/* Check to see whether we have to rehash the configuration .. */
247			if (dorehash)
248			{
249			rehash(1);
250			dorehash = 0;
251			}
252			if (doremotd)
253			{
254			read_message_file(&ConfigFileEntry.motd);
255	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
256	adx	30	"Got signal SIGUSR1, reloading ircd motd file");
257			doremotd = 0;
258			}
259			}
260			}
261
262			/* initalialize_global_set_options()
263			*
264			* inputs - none
265			* output - none
266			* side effects - This sets all global set options needed
267			*/
268			static void
269			initialize_global_set_options(void)
270			{
271			memset(&GlobalSetOptions, 0, sizeof(GlobalSetOptions));
272
273			GlobalSetOptions.autoconn = 1;
274			GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
275			GlobalSetOptions.spam_num = MAX_JOIN_LEAVE_COUNT;
276
277			if (ConfigFileEntry.default_floodcount)
278			GlobalSetOptions.floodcount = ConfigFileEntry.default_floodcount;
279			else
280			GlobalSetOptions.floodcount = 10;
281
282			/* XXX I have no idea what to try here - Dianora */
283			GlobalSetOptions.joinfloodcount = 16;
284			GlobalSetOptions.joinfloodtime = 8;
285
286			split_servers = ConfigChannel.default_split_server_count;
287			split_users = ConfigChannel.default_split_user_count;
288
289			if (split_users && split_servers && (ConfigChannel.no_create_on_split \|\|
290			ConfigChannel.no_join_on_split))
291			{
292			splitmode = 1;
293			splitchecking = 1;
294			}
295
296			GlobalSetOptions.ident_timeout = IDENT_TIMEOUT;
297			/* End of global set options */
298			}
299
300			/* initialize_message_files()
301			*
302			* inputs - none
303			* output - none
304			* side effects - Set up all message files needed, motd etc.
305			*/
306			static void
307			initialize_message_files(void)
308			{
309			init_message_file(USER_MOTD, MPATH, &ConfigFileEntry.motd);
310			init_message_file(USER_LINKS, LIPATH, &ConfigFileEntry.linksfile);
311
312			read_message_file(&ConfigFileEntry.motd);
313			read_message_file(&ConfigFileEntry.linksfile);
314
315			init_isupport();
316			}
317
318			/* initialize_server_capabs()
319			*
320			* inputs - none
321			* output - none
322			*/
323			static void
324			initialize_server_capabs(void)
325			{
326			add_capability("QS", CAP_QS, 1);
327			add_capability("EOB", CAP_EOB, 1);
328	michael	1117	add_capability("TS6", CAP_TS6, 0);
329	adx	30	add_capability("CLUSTER", CAP_CLUSTER, 1);
330	michael	1196	add_capability("SVS", CAP_SVS, 1);
331	adx	30	#ifdef HALFOPS
332			add_capability("HOPS", CAP_HOPS, 1);
333			#endif
334			}
335
336			/* write_pidfile()
337			*
338			* inputs - filename+path of pid file
339			* output - NONE
340			* side effects - write the pid of the ircd to filename
341			*/
342			static void
343			write_pidfile(const char *filename)
344			{
345	michael	1325	FILE *fb;
346	adx	30
347	michael	1325	if ((fb = fopen(filename, "w")))
348	adx	30	{
349			char buff[32];
350			unsigned int pid = (unsigned int)getpid();
351
352	michael	1325	snprintf(buff, sizeof(buff), "%u\n", pid);
353
354			if ((fputs(buff, fb) == -1))
355	michael	1247	ilog(LOG_TYPE_IRCD, "Error writing %u to pid file %s (%s)",
356	adx	30	pid, filename, strerror(errno));
357
358	michael	1325	fclose(fb);
359	adx	30	}
360			else
361			{
362	michael	1247	ilog(LOG_TYPE_IRCD, "Error opening pid file %s", filename);
363	adx	30	}
364			}
365
366			/* check_pidfile()
367			*
368			* inputs - filename+path of pid file
369			* output - none
370			* side effects - reads pid from pidfile and checks if ircd is in process
371			* list. if it is, gracefully exits
372			* -kre
373			*/
374			static void
375			check_pidfile(const char *filename)
376			{
377	michael	1325	FILE *fb;
378	adx	30	char buff[32];
379			pid_t pidfromfile;
380
381			/* Don't do logging here, since we don't have log() initialised */
382	michael	1325	if ((fb = fopen(filename, "r")))
383	adx	30	{
384	michael	1325	if (fgets(buff, 20, fb) == NULL)
385	adx	30	{
386			/* log(L_ERROR, "Error reading from pid file %s (%s)", filename,
387			* strerror(errno));
388			*/
389			}
390			else
391			{
392			pidfromfile = atoi(buff);
393
394			if (!kill(pidfromfile, 0))
395			{
396			/* log(L_ERROR, "Server is already running"); */
397			printf("ircd: daemon is already running\n");
398			exit(-1);
399			}
400			}
401
402	michael	1325	fclose(fb);
403	adx	30	}
404			else if (errno != ENOENT)
405			{
406			/* log(L_ERROR, "Error opening pid file %s", filename); */
407			}
408			}
409
410			/* setup_corefile()
411			*
412			* inputs - nothing
413			* output - nothing
414			* side effects - setups corefile to system limits.
415			* -kre
416			*/
417			static void
418			setup_corefile(void)
419			{
420			#ifdef HAVE_SYS_RESOURCE_H
421			struct rlimit rlim; /* resource limits */
422
423			/* Set corefilesize to maximum */
424			if (!getrlimit(RLIMIT_CORE, &rlim))
425			{
426			rlim.rlim_cur = rlim.rlim_max;
427			setrlimit(RLIMIT_CORE, &rlim);
428			}
429			#endif
430			}
431
432			/* init_ssl()
433			*
434			* inputs - nothing
435			* output - nothing
436			* side effects - setups SSL context.
437			*/
438			static void
439	michael	1798	ssl_init(void)
440	adx	30	{
441			#ifdef HAVE_LIBCRYPTO
442			SSL_load_error_strings();
443			SSLeay_add_ssl_algorithms();
444
445	michael	967	if ((ServerInfo.server_ctx = SSL_CTX_new(SSLv23_server_method())) == NULL)
446	adx	30	{
447			const char *s;
448
449	michael	1303	fprintf(stderr, "ERROR: Could not initialize the SSL Server context -- %s\n",
450	adx	30	s = ERR_lib_error_string(ERR_get_error()));
451	michael	1303	ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Server context -- %s\n", s);
452	adx	30	}
453
454	michael	1316	SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_NO_SSLv2\|SSL_OP_NO_SSLv3\|SSL_OP_NO_TLSv1);
455	michael	967	SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_TLS_ROLLBACK_BUG\|SSL_OP_ALL);
456			SSL_CTX_set_verify(ServerInfo.server_ctx, SSL_VERIFY_NONE, NULL);
457	adx	30
458	michael	1303	if ((ServerInfo.client_ctx = SSL_CTX_new(SSLv23_client_method())) == NULL)
459			{
460			const char *s;
461
462			fprintf(stderr, "ERROR: Could not initialize the SSL Client context -- %s\n",
463			s = ERR_lib_error_string(ERR_get_error()));
464			ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Client context -- %s\n", s);
465			}
466
467	michael	1316	SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_NO_SSLv2\|SSL_OP_NO_SSLv3\|SSL_OP_NO_TLSv1);
468	michael	1303	SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_TLS_ROLLBACK_BUG\|SSL_OP_ALL);
469			SSL_CTX_set_verify(ServerInfo.client_ctx, SSL_VERIFY_NONE, NULL);
470	adx	30	#endif /* HAVE_LIBCRYPTO */
471			}
472
473			int
474			main(int argc, char *argv[])
475			{
476			/* Check to see if the user is running
477			* us as root, which is a nono
478			*/
479			if (geteuid() == 0)
480			{
481			fprintf(stderr, "Don't run ircd as root!!!\n");
482	michael	982	return -1;
483	adx	30	}
484
485			/* Setup corefile size immediately after boot -kre */
486			setup_corefile();
487
488			/* save server boot time right away, so getrusage works correctly */
489			set_time();
490
491	michael	982	/* It ain't random, but it ought to be a little harder to guess */
492			init_genrand(SystemTime.tv_sec ^ (SystemTime.tv_usec \| (getpid() << 20)));
493
494	adx	30	me.localClient = &meLocalUser;
495			dlinkAdd(&me, &me.node, &global_client_list); /* Pointer to beginning
496			of Client list */
497			/* Initialise the channel capability usage counts... */
498			init_chcap_usage_counts();
499
500			ConfigFileEntry.dpath = DPATH;
501	michael	1702	ConfigFileEntry.configfile = CPATH; /* Server configuration file */
502			ConfigFileEntry.klinefile = KPATH; /* Server kline file */
503	michael	1718	ConfigFileEntry.glinefile = GPATH; /* Server gline file */
504	michael	1702	ConfigFileEntry.xlinefile = XPATH; /* Server xline file */
505			ConfigFileEntry.dlinefile = DLPATH; /* dline file */
506			ConfigFileEntry.resvfile = RESVPATH; /* resv file */
507
508	adx	30	myargv = argv;
509			umask(077); /* better safe than sorry --SRB */
510
511			parseargs(&argc, &argv, myopts);
512
513			if (printVersion)
514			{
515			printf("ircd: version %s\n", ircd_version);
516			exit(EXIT_SUCCESS);
517			}
518
519			if (chdir(ConfigFileEntry.dpath))
520			{
521			perror("chdir");
522			exit(EXIT_FAILURE);
523			}
524
525	michael	1798	ssl_init();
526	adx	30
527			if (!server_state.foreground)
528			{
529			make_daemon();
530			close_standard_fds(); /* this needs to be before init_netio()! */
531			}
532			else
533			print_startup(getpid());
534
535			setup_signals();
536
537			/* Init the event subsystem */
538			eventInit();
539			/* We need this to initialise the fd array before anything else */
540			fdlist_init();
541	michael	1831	log_set_file(LOG_TYPE_IRCD, 0, logFileName);
542	adx	30	check_can_use_v6();
543			init_comm(); /* This needs to be setup early ! -- adrian */
544			/* Check if there is pidfile and daemon already running */
545			check_pidfile(pidFileName);
546
547	michael	1654	mp_pool_init();
548	adx	30	init_dlink_nodes();
549			initialize_message_files();
550			dbuf_init();
551	michael	1798	hash_init();
552	adx	30	init_ip_hash_table(); /* client host ip hash table */
553			init_host_hash(); /* Host-hashtable. */
554	michael	1798	client_init();
555	michael	1632	class_init();
556	michael	1358	whowas_init();
557	michael	876	watch_init();
558	michael	1798	auth_init(); /* Initialise the auth code */
559	michael	998	init_resolver(); /* Needs to be setup before the io loop */
560	michael	1404	modules_init();
561	adx	30	read_conf_files(1); /* cold start init conf files */
562			init_uid();
563			initialize_server_capabs(); /* Set up default_server_capabs */
564			initialize_global_set_options();
565	michael	1798	channel_init();
566	michael	1858	#ifdef HAVE_LIBGEOIP
567			geoip_ctx = GeoIP_new(GEOIP_MEMORY_CACHE);
568			#endif
569	adx	30
570	michael	1115	if (EmptyString(ServerInfo.sid))
571	adx	30	{
572	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server id specified in serverinfo block.");
573	adx	30	exit(EXIT_FAILURE);
574			}
575	michael	885
576	michael	1115	strlcpy(me.id, ServerInfo.sid, sizeof(me.id));
577
578			if (EmptyString(ServerInfo.name))
579			{
580	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server name specified in serverinfo block.");
581	michael	1115	exit(EXIT_FAILURE);
582			}
583
584	adx	30	strlcpy(me.name, ServerInfo.name, sizeof(me.name));
585
586			/* serverinfo{} description must exist. If not, error out.*/
587	michael	1115	if (EmptyString(ServerInfo.description))
588	adx	30	{
589	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server description specified in serverinfo block.");
590	adx	30	exit(EXIT_FAILURE);
591			}
592	michael	885
593	adx	30	strlcpy(me.info, ServerInfo.description, sizeof(me.info));
594
595	michael	1241	me.from = &me;
596			me.servptr = &me;
597			me.localClient->lasttime = CurrentTime;
598			me.localClient->since = CurrentTime;
599			me.localClient->firsttime = CurrentTime;
600	adx	30
601			SetMe(&me);
602			make_server(&me);
603
604	michael	1115	hash_add_id(&me);
605	adx	30	hash_add_client(&me);
606
607			/* add ourselves to global_serv_list */
608			dlinkAdd(&me, make_dlink_node(), &global_serv_list);
609
610	michael	1622	load_kline_database();
611			load_dline_database();
612			load_gline_database();
613			load_xline_database();
614			load_resv_database();
615
616	adx	30	if (chdir(MODPATH))
617			{
618	michael	1247	ilog(LOG_TYPE_IRCD, "Could not load core modules. Terminating!");
619	adx	30	exit(EXIT_FAILURE);
620			}
621
622			load_all_modules(1);
623			load_conf_modules();
624			load_core_modules(1);
625	michael	1115
626	adx	30	/* Go back to DPATH after checking to see if we can chdir to MODPATH */
627	michael	1115	if (chdir(ConfigFileEntry.dpath))
628			{
629			perror("chdir");
630			exit(EXIT_FAILURE);
631			}
632	michael	1121
633	adx	30	/*
634			* assemble_umode_buffer() has to be called after
635			* reading conf/loading modules.
636			*/
637			assemble_umode_buffer();
638
639			write_pidfile(pidFileName);
640
641	michael	1247	ilog(LOG_TYPE_IRCD, "Server Ready");
642	adx	30
643			eventAddIsh("cleanup_glines", cleanup_glines, NULL, CLEANUP_GLINES_TIME);
644			eventAddIsh("cleanup_tklines", cleanup_tklines, NULL, CLEANUP_TKLINES_TIME);
645
646			/* We want try_connections to be called as soon as possible now! -- adrian */
647			/* No, 'cause after a restart it would cause all sorts of nick collides */
648			eventAddIsh("try_connections", try_connections, NULL, STARTUP_CONNECTIONS_TIME);
649
650			/* Setup the timeout check. I'll shift it later :) -- adrian */
651			eventAddIsh("comm_checktimeouts", comm_checktimeouts, NULL, 1);
652
653	michael	1625	eventAddIsh("save_all_databases", save_all_databases, NULL, DATABASE_UPDATE_TIMEOUT);
654
655	adx	30	if (ConfigServerHide.links_delay > 0)
656			eventAddIsh("write_links_file", write_links_file, NULL, ConfigServerHide.links_delay);
657			else
658			ConfigServerHide.links_disabled = 1;
659
660			if (splitmode)
661			eventAddIsh("check_splitmode", check_splitmode, NULL, 60);
662
663			io_loop();
664	michael	885	return 0;
665	adx	30	}