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 "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)
    {
      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[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
}

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

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

  if ((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);

  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\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();
  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:	2330
Committed:	Sun Jun 23 13:29:56 2013 UTC (13 years, 1 month ago) by michael
Content type:	text/x-csrc
File size:	17377 byte(s)
Log Message:	- ircd.c: temporarily disable FAKEHOST capability
#	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 "supported.h"
60	michael	876	#include "watch.h"
61	michael	1622	#include "conf_db.h"
62	michael	1632	#include "conf_class.h"
63	adx	30
64	michael	1858
65			#ifdef HAVE_LIBGEOIP
66			GeoIP *geoip_ctx;
67			#endif
68	adx	30	/* /quote set variables */
69			struct SetOptions GlobalSetOptions;
70
71			/* configuration set from ircd.conf */
72			struct config_file_entry ConfigFileEntry;
73			/* server info set from ircd.conf */
74			struct server_info ServerInfo;
75			/* admin info set from ircd.conf */
76			struct admin_info AdminInfo = { NULL, NULL, NULL };
77	michael	1145	struct Counter Count = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
78	adx	30	struct ServerState_t server_state = { 0 };
79	michael	1324	struct logging_entry ConfigLoggingEntry = { .use_logging = 1 };
80	michael	896	struct ServerStatistics ServerStats;
81	adx	30	struct timeval SystemTime;
82			struct Client me; /* That's me */
83			struct LocalUser meLocalUser; /* That's also part of me */
84
85			const char *logFileName = LPATH;
86			const char *pidFileName = PPATH;
87
88			char **myargv;
89
90			int dorehash = 0;
91			int doremotd = 0;
92
93			/* Set to zero because it should be initialized later using
94			* initialize_server_capabs
95			*/
96			int default_server_capabs = 0;
97	michael	1013	unsigned int splitmode;
98			unsigned int splitchecking;
99			unsigned int split_users;
100	adx	30	unsigned int split_servers;
101
102			/* Do klines the same way hybrid-6 did them, i.e. at the
103			* top of the next io_loop instead of in the same loop as
104			* the klines are being applied.
105			*
106			* This should fix strange CPU starvation as very indirectly reported.
107			* (Why do you people not email bug reports? WHY? WHY?)
108			*
109			* - Dianora
110			*/
111
112			int rehashed_klines = 0;
113
114
115			/*
116			* print_startup - print startup information
117			*/
118			static void
119			print_startup(int pid)
120			{
121			printf("ircd: version %s\n", ircd_version);
122			printf("ircd: pid %d\n", pid);
123			printf("ircd: running in %s mode from %s\n", !server_state.foreground ? "background"
124			: "foreground", ConfigFileEntry.dpath);
125			}
126
127			static void
128			make_daemon(void)
129			{
130			int pid;
131
132			if ((pid = fork()) < 0)
133			{
134			perror("fork");
135			exit(EXIT_FAILURE);
136			}
137			else if (pid > 0)
138			{
139			print_startup(pid);
140			exit(EXIT_SUCCESS);
141			}
142
143			setsid();
144			}
145
146			static int printVersion = 0;
147
148	michael	1357	static struct lgetopt myopts[] = {
149	adx	30	{"configfile", &ConfigFileEntry.configfile,
150			STRING, "File to use for ircd.conf"},
151	michael	1718	{"glinefile", &ConfigFileEntry.glinefile,
152			STRING, "File to use for gline database"},
153	adx	30	{"klinefile", &ConfigFileEntry.klinefile,
154	michael	1718	STRING, "File to use for kline database"},
155			{"dlinefile", &ConfigFileEntry.dlinefile,
156			STRING, "File to use for dline database"},
157	adx	30	{"xlinefile", &ConfigFileEntry.xlinefile,
158	michael	1718	STRING, "File to use for xline database"},
159			{"resvfile", &ConfigFileEntry.resvfile,
160			STRING, "File to use for resv database"},
161	adx	30	{"logfile", &logFileName,
162			STRING, "File to use for ircd.log"},
163			{"pidfile", &pidFileName,
164			STRING, "File to use for process ID"},
165			{"foreground", &server_state.foreground,
166			YESNO, "Run in foreground (don't detach)"},
167			{"version", &printVersion,
168			YESNO, "Print version and exit"},
169			{"help", NULL, USAGE, "Print this text"},
170			{NULL, NULL, STRING, NULL},
171			};
172
173			void
174			set_time(void)
175			{
176			static char to_send[200];
177			struct timeval newtime;
178			newtime.tv_sec = 0;
179			newtime.tv_usec = 0;
180
181			if (gettimeofday(&newtime, NULL) == -1)
182			{
183	michael	1247	ilog(LOG_TYPE_IRCD, "Clock Failure (%s), TS can be corrupted",
184	adx	30	strerror(errno));
185	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
186	adx	30	"Clock Failure (%s), TS can be corrupted",
187			strerror(errno));
188			restart("Clock Failure");
189			}
190
191			if (newtime.tv_sec < CurrentTime)
192			{
193	michael	1124	snprintf(to_send, sizeof(to_send),
194			"System clock is running backwards - (%lu < %lu)",
195			(unsigned long)newtime.tv_sec, (unsigned long)CurrentTime);
196	adx	30	report_error(L_ALL, to_send, me.name, 0);
197			set_back_events(CurrentTime - newtime.tv_sec);
198			}
199
200			SystemTime.tv_sec = newtime.tv_sec;
201			SystemTime.tv_usec = newtime.tv_usec;
202			}
203
204			static void
205			io_loop(void)
206			{
207			while (1 == 1)
208			{
209			/*
210			* Maybe we want a flags word?
211			* ie. if (REHASHED_KLINES(global_flags))
212			* SET_REHASHED_KLINES(global_flags)
213			* CLEAR_REHASHED_KLINES(global_flags)
214			*
215			* - Dianora
216			*/
217			if (rehashed_klines)
218			{
219			check_conf_klines();
220			rehashed_klines = 0;
221			}
222
223			if (listing_client_list.head)
224			{
225			dlink_node ptr = NULL, ptr_next = NULL;
226			DLINK_FOREACH_SAFE(ptr, ptr_next, listing_client_list.head)
227			{
228			struct Client *client_p = ptr->data;
229			assert(client_p->localClient->list_task);
230	michael	896	safe_list_channels(client_p, client_p->localClient->list_task, 0);
231	adx	30	}
232			}
233
234			/* Run pending events, then get the number of seconds to the next
235			* event
236			*/
237			while (eventNextTime() <= CurrentTime)
238			eventRun();
239
240			comm_select();
241			exit_aborted_clients();
242			free_exited_clients();
243			send_queued_all();
244
245			/* Check to see whether we have to rehash the configuration .. */
246			if (dorehash)
247			{
248			rehash(1);
249			dorehash = 0;
250			}
251			if (doremotd)
252			{
253	michael	2150	motd_recache();
254	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
255	michael	2150	"Got signal SIGUSR1, reloading motd files");
256	adx	30	doremotd = 0;
257			}
258			}
259			}
260
261			/* initalialize_global_set_options()
262			*
263			* inputs - none
264			* output - none
265			* side effects - This sets all global set options needed
266			*/
267			static void
268			initialize_global_set_options(void)
269			{
270			memset(&GlobalSetOptions, 0, sizeof(GlobalSetOptions));
271
272			GlobalSetOptions.autoconn = 1;
273			GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
274			GlobalSetOptions.spam_num = MAX_JOIN_LEAVE_COUNT;
275
276			if (ConfigFileEntry.default_floodcount)
277			GlobalSetOptions.floodcount = ConfigFileEntry.default_floodcount;
278			else
279			GlobalSetOptions.floodcount = 10;
280
281			/* XXX I have no idea what to try here - Dianora */
282			GlobalSetOptions.joinfloodcount = 16;
283			GlobalSetOptions.joinfloodtime = 8;
284
285			split_servers = ConfigChannel.default_split_server_count;
286			split_users = ConfigChannel.default_split_user_count;
287
288			if (split_users && split_servers && (ConfigChannel.no_create_on_split \|\|
289			ConfigChannel.no_join_on_split))
290			{
291			splitmode = 1;
292			splitchecking = 1;
293			}
294
295			GlobalSetOptions.ident_timeout = IDENT_TIMEOUT;
296			/* End of global set options */
297			}
298
299			/* initialize_server_capabs()
300			*
301			* inputs - none
302			* output - none
303			*/
304			static void
305			initialize_server_capabs(void)
306			{
307			add_capability("QS", CAP_QS, 1);
308			add_capability("EOB", CAP_EOB, 1);
309	michael	1117	add_capability("TS6", CAP_TS6, 0);
310	adx	30	add_capability("CLUSTER", CAP_CLUSTER, 1);
311	michael	2330	// add_capability("FAKEHOST", CAP_FAKEHOST, 1);
312	michael	1196	add_capability("SVS", CAP_SVS, 1);
313	adx	30	#ifdef HALFOPS
314			add_capability("HOPS", CAP_HOPS, 1);
315			#endif
316			}
317
318			/* write_pidfile()
319			*
320			* inputs - filename+path of pid file
321			* output - NONE
322			* side effects - write the pid of the ircd to filename
323			*/
324			static void
325			write_pidfile(const char *filename)
326			{
327	michael	1325	FILE *fb;
328	adx	30
329	michael	1325	if ((fb = fopen(filename, "w")))
330	adx	30	{
331			char buff[32];
332			unsigned int pid = (unsigned int)getpid();
333
334	michael	1325	snprintf(buff, sizeof(buff), "%u\n", pid);
335
336			if ((fputs(buff, fb) == -1))
337	michael	1247	ilog(LOG_TYPE_IRCD, "Error writing %u to pid file %s (%s)",
338	adx	30	pid, filename, strerror(errno));
339
340	michael	1325	fclose(fb);
341	adx	30	}
342			else
343			{
344	michael	1247	ilog(LOG_TYPE_IRCD, "Error opening pid file %s", filename);
345	adx	30	}
346			}
347
348			/* check_pidfile()
349			*
350			* inputs - filename+path of pid file
351			* output - none
352			* side effects - reads pid from pidfile and checks if ircd is in process
353			* list. if it is, gracefully exits
354			* -kre
355			*/
356			static void
357			check_pidfile(const char *filename)
358			{
359	michael	1325	FILE *fb;
360	adx	30	char buff[32];
361			pid_t pidfromfile;
362
363			/* Don't do logging here, since we don't have log() initialised */
364	michael	1325	if ((fb = fopen(filename, "r")))
365	adx	30	{
366	michael	1325	if (fgets(buff, 20, fb) == NULL)
367	adx	30	{
368			/* log(L_ERROR, "Error reading from pid file %s (%s)", filename,
369			* strerror(errno));
370			*/
371			}
372			else
373			{
374			pidfromfile = atoi(buff);
375
376			if (!kill(pidfromfile, 0))
377			{
378			/* log(L_ERROR, "Server is already running"); */
379			printf("ircd: daemon is already running\n");
380			exit(-1);
381			}
382			}
383
384	michael	1325	fclose(fb);
385	adx	30	}
386			else if (errno != ENOENT)
387			{
388			/* log(L_ERROR, "Error opening pid file %s", filename); */
389			}
390			}
391
392			/* setup_corefile()
393			*
394			* inputs - nothing
395			* output - nothing
396			* side effects - setups corefile to system limits.
397			* -kre
398			*/
399			static void
400			setup_corefile(void)
401			{
402			#ifdef HAVE_SYS_RESOURCE_H
403			struct rlimit rlim; /* resource limits */
404
405			/* Set corefilesize to maximum */
406			if (!getrlimit(RLIMIT_CORE, &rlim))
407			{
408			rlim.rlim_cur = rlim.rlim_max;
409			setrlimit(RLIMIT_CORE, &rlim);
410			}
411			#endif
412			}
413
414	michael	2228	#ifdef HAVE_LIBCRYPTO
415			static int
416			always_accept_verify_cb(int preverify_ok, X509_STORE_CTX *x509_ctx)
417			{
418			return 1;
419			}
420			#endif
421
422	adx	30	/* init_ssl()
423			*
424			* inputs - nothing
425			* output - nothing
426			* side effects - setups SSL context.
427			*/
428			static void
429	michael	1798	ssl_init(void)
430	adx	30	{
431			#ifdef HAVE_LIBCRYPTO
432			SSL_load_error_strings();
433			SSLeay_add_ssl_algorithms();
434
435	michael	967	if ((ServerInfo.server_ctx = SSL_CTX_new(SSLv23_server_method())) == NULL)
436	adx	30	{
437			const char *s;
438
439	michael	1303	fprintf(stderr, "ERROR: Could not initialize the SSL Server context -- %s\n",
440	adx	30	s = ERR_lib_error_string(ERR_get_error()));
441	michael	1303	ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Server context -- %s\n", s);
442	adx	30	}
443
444	michael	1316	SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_NO_SSLv2\|SSL_OP_NO_SSLv3\|SSL_OP_NO_TLSv1);
445	michael	967	SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_TLS_ROLLBACK_BUG\|SSL_OP_ALL);
446	michael	2228	SSL_CTX_set_verify(ServerInfo.server_ctx, SSL_VERIFY_PEER\|SSL_VERIFY_CLIENT_ONCE,
447			always_accept_verify_cb);
448	adx	30
449	michael	1303	if ((ServerInfo.client_ctx = SSL_CTX_new(SSLv23_client_method())) == NULL)
450			{
451			const char *s;
452
453			fprintf(stderr, "ERROR: Could not initialize the SSL Client context -- %s\n",
454			s = ERR_lib_error_string(ERR_get_error()));
455			ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Client context -- %s\n", s);
456			}
457
458	michael	1316	SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_NO_SSLv2\|SSL_OP_NO_SSLv3\|SSL_OP_NO_TLSv1);
459	michael	1303	SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_TLS_ROLLBACK_BUG\|SSL_OP_ALL);
460	michael	2253	SSL_CTX_set_verify(ServerInfo.client_ctx, SSL_VERIFY_PEER\|SSL_VERIFY_CLIENT_ONCE,
461	michael	2228	always_accept_verify_cb);
462	adx	30	#endif /* HAVE_LIBCRYPTO */
463			}
464
465			int
466			main(int argc, char *argv[])
467			{
468	michael	2253	/* Check to see if the user is running us as root, which is a nono */
469	adx	30	if (geteuid() == 0)
470			{
471			fprintf(stderr, "Don't run ircd as root!!!\n");
472	michael	982	return -1;
473	adx	30	}
474
475			/* Setup corefile size immediately after boot -kre */
476			setup_corefile();
477
478			/* save server boot time right away, so getrusage works correctly */
479			set_time();
480
481	michael	982	/* It ain't random, but it ought to be a little harder to guess */
482			init_genrand(SystemTime.tv_sec ^ (SystemTime.tv_usec \| (getpid() << 20)));
483
484	adx	30	me.localClient = &meLocalUser;
485	michael	2253	dlinkAdd(&me, &me.node, &global_client_list); /* Pointer to beginning
486	adx	30	of Client list */
487			/* Initialise the channel capability usage counts... */
488			init_chcap_usage_counts();
489
490			ConfigFileEntry.dpath = DPATH;
491	michael	1702	ConfigFileEntry.configfile = CPATH; /* Server configuration file */
492			ConfigFileEntry.klinefile = KPATH; /* Server kline file */
493	michael	1718	ConfigFileEntry.glinefile = GPATH; /* Server gline file */
494	michael	1702	ConfigFileEntry.xlinefile = XPATH; /* Server xline file */
495			ConfigFileEntry.dlinefile = DLPATH; /* dline file */
496			ConfigFileEntry.resvfile = RESVPATH; /* resv file */
497
498	adx	30	myargv = argv;
499			umask(077); /* better safe than sorry --SRB */
500
501			parseargs(&argc, &argv, myopts);
502
503			if (printVersion)
504			{
505			printf("ircd: version %s\n", ircd_version);
506			exit(EXIT_SUCCESS);
507			}
508
509			if (chdir(ConfigFileEntry.dpath))
510			{
511			perror("chdir");
512			exit(EXIT_FAILURE);
513			}
514
515	michael	1798	ssl_init();
516	adx	30
517			if (!server_state.foreground)
518			{
519			make_daemon();
520			close_standard_fds(); /* this needs to be before init_netio()! */
521			}
522			else
523			print_startup(getpid());
524
525			setup_signals();
526
527			/* Init the event subsystem */
528			eventInit();
529	michael	2253
530	adx	30	/* We need this to initialise the fd array before anything else */
531			fdlist_init();
532	michael	1831	log_set_file(LOG_TYPE_IRCD, 0, logFileName);
533	adx	30	check_can_use_v6();
534			init_comm(); /* This needs to be setup early ! -- adrian */
535	michael	2253
536	adx	30	/* Check if there is pidfile and daemon already running */
537			check_pidfile(pidFileName);
538
539	michael	1654	mp_pool_init();
540	adx	30	init_dlink_nodes();
541	michael	2159	init_isupport();
542	adx	30	dbuf_init();
543	michael	1798	hash_init();
544	adx	30	init_ip_hash_table(); /* client host ip hash table */
545			init_host_hash(); /* Host-hashtable. */
546	michael	1798	client_init();
547	michael	1632	class_init();
548	michael	1358	whowas_init();
549	michael	876	watch_init();
550	michael	1798	auth_init(); /* Initialise the auth code */
551	michael	998	init_resolver(); /* Needs to be setup before the io loop */
552	michael	1404	modules_init();
553	adx	30	read_conf_files(1); /* cold start init conf files */
554			init_uid();
555			initialize_server_capabs(); /* Set up default_server_capabs */
556			initialize_global_set_options();
557	michael	1798	channel_init();
558	michael	2216	read_links_file();
559	michael	2150	motd_init();
560	michael	1858	#ifdef HAVE_LIBGEOIP
561			geoip_ctx = GeoIP_new(GEOIP_MEMORY_CACHE);
562			#endif
563	adx	30
564	michael	1115	if (EmptyString(ServerInfo.sid))
565	adx	30	{
566	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server id specified in serverinfo block.");
567	adx	30	exit(EXIT_FAILURE);
568			}
569	michael	885
570	michael	1115	strlcpy(me.id, ServerInfo.sid, sizeof(me.id));
571
572			if (EmptyString(ServerInfo.name))
573			{
574	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server name specified in serverinfo block.");
575	michael	1115	exit(EXIT_FAILURE);
576			}
577
578	adx	30	strlcpy(me.name, ServerInfo.name, sizeof(me.name));
579
580			/* serverinfo{} description must exist. If not, error out.*/
581	michael	1115	if (EmptyString(ServerInfo.description))
582	adx	30	{
583	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server description specified in serverinfo block.");
584	adx	30	exit(EXIT_FAILURE);
585			}
586	michael	885
587	adx	30	strlcpy(me.info, ServerInfo.description, sizeof(me.info));
588
589	michael	1241	me.from = &me;
590			me.servptr = &me;
591			me.localClient->lasttime = CurrentTime;
592			me.localClient->since = CurrentTime;
593			me.localClient->firsttime = CurrentTime;
594	adx	30
595			SetMe(&me);
596			make_server(&me);
597
598	michael	1115	hash_add_id(&me);
599	adx	30	hash_add_client(&me);
600
601			/* add ourselves to global_serv_list */
602			dlinkAdd(&me, make_dlink_node(), &global_serv_list);
603
604	michael	1622	load_kline_database();
605			load_dline_database();
606			load_gline_database();
607			load_xline_database();
608			load_resv_database();
609
610	adx	30	if (chdir(MODPATH))
611			{
612	michael	1247	ilog(LOG_TYPE_IRCD, "Could not load core modules. Terminating!");
613	adx	30	exit(EXIT_FAILURE);
614			}
615
616			load_all_modules(1);
617			load_conf_modules();
618			load_core_modules(1);
619	michael	1115
620	adx	30	/* Go back to DPATH after checking to see if we can chdir to MODPATH */
621	michael	1115	if (chdir(ConfigFileEntry.dpath))
622			{
623			perror("chdir");
624			exit(EXIT_FAILURE);
625			}
626	michael	1121
627	adx	30	/*
628			* assemble_umode_buffer() has to be called after
629			* reading conf/loading modules.
630			*/
631			assemble_umode_buffer();
632
633			write_pidfile(pidFileName);
634
635	michael	1247	ilog(LOG_TYPE_IRCD, "Server Ready");
636	adx	30
637			eventAddIsh("cleanup_glines", cleanup_glines, NULL, CLEANUP_GLINES_TIME);
638			eventAddIsh("cleanup_tklines", cleanup_tklines, NULL, CLEANUP_TKLINES_TIME);
639
640			/* We want try_connections to be called as soon as possible now! -- adrian */
641			/* No, 'cause after a restart it would cause all sorts of nick collides */
642			eventAddIsh("try_connections", try_connections, NULL, STARTUP_CONNECTIONS_TIME);
643
644			/* Setup the timeout check. I'll shift it later :) -- adrian */
645			eventAddIsh("comm_checktimeouts", comm_checktimeouts, NULL, 1);
646
647	michael	1625	eventAddIsh("save_all_databases", save_all_databases, NULL, DATABASE_UPDATE_TIMEOUT);
648
649	adx	30	if (ConfigServerHide.links_delay > 0)
650			eventAddIsh("write_links_file", write_links_file, NULL, ConfigServerHide.links_delay);
651			else
652			ConfigServerHide.links_disabled = 1;
653
654			if (splitmode)
655			eventAddIsh("check_splitmode", check_splitmode, NULL, 60);
656
657			io_loop();
658	michael	885	return 0;
659	adx	30	}