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"

/* /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[] = {
  {"dlinefile",  &ConfigFileEntry.dlinefile, 
   STRING, "File to use for dline.conf"},
  {"configfile", &ConfigFileEntry.configfile, 
   STRING, "File to use for ircd.conf"},
  {"klinefile",  &ConfigFileEntry.klinefile, 
   STRING, "File to use for kline.conf"},
  {"xlinefile",  &ConfigFileEntry.xlinefile, 
   STRING, "File to use for xline.conf"},
  {"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
init_ssl(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 */
}

/* init_callbacks()
 *
 * inputs       - nothing
 * output       - nothing
 * side effects - setups standard hook points
 */
static void
init_callbacks(void)
{
  iorecv_cb = register_callback("iorecv", iorecv_default);
  iosend_cb = register_callback("iosend", iosend_default);
}

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.xlinefile  = XPATH;  /* Server xline file         */
  ConfigFileEntry.dlinefile  = DLPATH; /* dline file                */
//  ConfigFileEntry.cresvfile  = CRESVPATH; /* channel resv file      */
//  ConfigFileEntry.nresvfile  = NRESVPATH; /* nick 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);
  }

  init_ssl();

  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_add_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_callbacks();
  initialize_message_files();
  dbuf_init();
  init_hash();
  init_ip_hash_table();      /* client host ip hash table */
  init_host_hash();          /* Host-hashtable. */
  init_client();
  class_init();
  whowas_init();
  watch_init();
  init_auth();          /* 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();
  init_channels();

  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:	1654
Committed:	Fri Nov 16 19:39:37 2012 UTC (12 years, 9 months ago) by michael
Content type:	text/x-csrc
File size:	17525 byte(s)
Log Message:	- Implemented memory pool allocator which basically is taken from Tor's mempool allocator for Tor cells - Fixed compile warnings in conf_class.c - ./configure --enable-assert works again
#	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			/* /quote set variables */
66			struct SetOptions GlobalSetOptions;
67
68			/* configuration set from ircd.conf */
69			struct config_file_entry ConfigFileEntry;
70			/* server info set from ircd.conf */
71			struct server_info ServerInfo;
72			/* admin info set from ircd.conf */
73			struct admin_info AdminInfo = { NULL, NULL, NULL };
74	michael	1145	struct Counter Count = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
75	adx	30	struct ServerState_t server_state = { 0 };
76	michael	1324	struct logging_entry ConfigLoggingEntry = { .use_logging = 1 };
77	michael	896	struct ServerStatistics ServerStats;
78	adx	30	struct timeval SystemTime;
79			struct Client me; /* That's me */
80			struct LocalUser meLocalUser; /* That's also part of me */
81
82			const char *logFileName = LPATH;
83			const char *pidFileName = PPATH;
84
85			char **myargv;
86
87			int dorehash = 0;
88			int doremotd = 0;
89
90			/* Set to zero because it should be initialized later using
91			* initialize_server_capabs
92			*/
93			int default_server_capabs = 0;
94	michael	1013	unsigned int splitmode;
95			unsigned int splitchecking;
96			unsigned int split_users;
97	adx	30	unsigned int split_servers;
98
99			/* Do klines the same way hybrid-6 did them, i.e. at the
100			* top of the next io_loop instead of in the same loop as
101			* the klines are being applied.
102			*
103			* This should fix strange CPU starvation as very indirectly reported.
104			* (Why do you people not email bug reports? WHY? WHY?)
105			*
106			* - Dianora
107			*/
108
109			int rehashed_klines = 0;
110
111
112			/*
113			* print_startup - print startup information
114			*/
115			static void
116			print_startup(int pid)
117			{
118			printf("ircd: version %s\n", ircd_version);
119			printf("ircd: pid %d\n", pid);
120			printf("ircd: running in %s mode from %s\n", !server_state.foreground ? "background"
121			: "foreground", ConfigFileEntry.dpath);
122			}
123
124			static void
125			make_daemon(void)
126			{
127			int pid;
128
129			if ((pid = fork()) < 0)
130			{
131			perror("fork");
132			exit(EXIT_FAILURE);
133			}
134			else if (pid > 0)
135			{
136			print_startup(pid);
137			exit(EXIT_SUCCESS);
138			}
139
140			setsid();
141			}
142
143			static int printVersion = 0;
144
145	michael	1357	static struct lgetopt myopts[] = {
146	adx	30	{"dlinefile", &ConfigFileEntry.dlinefile,
147			STRING, "File to use for dline.conf"},
148			{"configfile", &ConfigFileEntry.configfile,
149			STRING, "File to use for ircd.conf"},
150			{"klinefile", &ConfigFileEntry.klinefile,
151			STRING, "File to use for kline.conf"},
152			{"xlinefile", &ConfigFileEntry.xlinefile,
153			STRING, "File to use for xline.conf"},
154			{"logfile", &logFileName,
155			STRING, "File to use for ircd.log"},
156			{"pidfile", &pidFileName,
157			STRING, "File to use for process ID"},
158			{"foreground", &server_state.foreground,
159			YESNO, "Run in foreground (don't detach)"},
160			{"version", &printVersion,
161			YESNO, "Print version and exit"},
162			{"help", NULL, USAGE, "Print this text"},
163			{NULL, NULL, STRING, NULL},
164			};
165
166			void
167			set_time(void)
168			{
169			static char to_send[200];
170			struct timeval newtime;
171			newtime.tv_sec = 0;
172			newtime.tv_usec = 0;
173
174			if (gettimeofday(&newtime, NULL) == -1)
175			{
176	michael	1247	ilog(LOG_TYPE_IRCD, "Clock Failure (%s), TS can be corrupted",
177	adx	30	strerror(errno));
178	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
179	adx	30	"Clock Failure (%s), TS can be corrupted",
180			strerror(errno));
181			restart("Clock Failure");
182			}
183
184			if (newtime.tv_sec < CurrentTime)
185			{
186	michael	1124	snprintf(to_send, sizeof(to_send),
187			"System clock is running backwards - (%lu < %lu)",
188			(unsigned long)newtime.tv_sec, (unsigned long)CurrentTime);
189	adx	30	report_error(L_ALL, to_send, me.name, 0);
190			set_back_events(CurrentTime - newtime.tv_sec);
191			}
192
193			SystemTime.tv_sec = newtime.tv_sec;
194			SystemTime.tv_usec = newtime.tv_usec;
195			}
196
197			static void
198			io_loop(void)
199			{
200			while (1 == 1)
201			{
202			/*
203			* Maybe we want a flags word?
204			* ie. if (REHASHED_KLINES(global_flags))
205			* SET_REHASHED_KLINES(global_flags)
206			* CLEAR_REHASHED_KLINES(global_flags)
207			*
208			* - Dianora
209			*/
210			if (rehashed_klines)
211			{
212			check_conf_klines();
213			rehashed_klines = 0;
214			}
215
216			if (listing_client_list.head)
217			{
218			dlink_node ptr = NULL, ptr_next = NULL;
219			DLINK_FOREACH_SAFE(ptr, ptr_next, listing_client_list.head)
220			{
221			struct Client *client_p = ptr->data;
222			assert(client_p->localClient->list_task);
223	michael	896	safe_list_channels(client_p, client_p->localClient->list_task, 0);
224	adx	30	}
225			}
226
227			/* Run pending events, then get the number of seconds to the next
228			* event
229			*/
230			while (eventNextTime() <= CurrentTime)
231			eventRun();
232
233			comm_select();
234			exit_aborted_clients();
235			free_exited_clients();
236			send_queued_all();
237
238			/* Check to see whether we have to rehash the configuration .. */
239			if (dorehash)
240			{
241			rehash(1);
242			dorehash = 0;
243			}
244			if (doremotd)
245			{
246			read_message_file(&ConfigFileEntry.motd);
247	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
248	adx	30	"Got signal SIGUSR1, reloading ircd motd file");
249			doremotd = 0;
250			}
251			}
252			}
253
254			/* initalialize_global_set_options()
255			*
256			* inputs - none
257			* output - none
258			* side effects - This sets all global set options needed
259			*/
260			static void
261			initialize_global_set_options(void)
262			{
263			memset(&GlobalSetOptions, 0, sizeof(GlobalSetOptions));
264
265			GlobalSetOptions.autoconn = 1;
266			GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
267			GlobalSetOptions.spam_num = MAX_JOIN_LEAVE_COUNT;
268
269			if (ConfigFileEntry.default_floodcount)
270			GlobalSetOptions.floodcount = ConfigFileEntry.default_floodcount;
271			else
272			GlobalSetOptions.floodcount = 10;
273
274			/* XXX I have no idea what to try here - Dianora */
275			GlobalSetOptions.joinfloodcount = 16;
276			GlobalSetOptions.joinfloodtime = 8;
277
278			split_servers = ConfigChannel.default_split_server_count;
279			split_users = ConfigChannel.default_split_user_count;
280
281			if (split_users && split_servers && (ConfigChannel.no_create_on_split \|\|
282			ConfigChannel.no_join_on_split))
283			{
284			splitmode = 1;
285			splitchecking = 1;
286			}
287
288			GlobalSetOptions.ident_timeout = IDENT_TIMEOUT;
289			/* End of global set options */
290			}
291
292			/* initialize_message_files()
293			*
294			* inputs - none
295			* output - none
296			* side effects - Set up all message files needed, motd etc.
297			*/
298			static void
299			initialize_message_files(void)
300			{
301			init_message_file(USER_MOTD, MPATH, &ConfigFileEntry.motd);
302			init_message_file(USER_LINKS, LIPATH, &ConfigFileEntry.linksfile);
303
304			read_message_file(&ConfigFileEntry.motd);
305			read_message_file(&ConfigFileEntry.linksfile);
306
307			init_isupport();
308			}
309
310			/* initialize_server_capabs()
311			*
312			* inputs - none
313			* output - none
314			*/
315			static void
316			initialize_server_capabs(void)
317			{
318			add_capability("QS", CAP_QS, 1);
319			add_capability("EOB", CAP_EOB, 1);
320	michael	1117	add_capability("TS6", CAP_TS6, 0);
321	adx	30	add_capability("CLUSTER", CAP_CLUSTER, 1);
322	michael	1196	add_capability("SVS", CAP_SVS, 1);
323	adx	30	#ifdef HALFOPS
324			add_capability("HOPS", CAP_HOPS, 1);
325			#endif
326			}
327
328			/* write_pidfile()
329			*
330			* inputs - filename+path of pid file
331			* output - NONE
332			* side effects - write the pid of the ircd to filename
333			*/
334			static void
335			write_pidfile(const char *filename)
336			{
337	michael	1325	FILE *fb;
338	adx	30
339	michael	1325	if ((fb = fopen(filename, "w")))
340	adx	30	{
341			char buff[32];
342			unsigned int pid = (unsigned int)getpid();
343
344	michael	1325	snprintf(buff, sizeof(buff), "%u\n", pid);
345
346			if ((fputs(buff, fb) == -1))
347	michael	1247	ilog(LOG_TYPE_IRCD, "Error writing %u to pid file %s (%s)",
348	adx	30	pid, filename, strerror(errno));
349
350	michael	1325	fclose(fb);
351	adx	30	}
352			else
353			{
354	michael	1247	ilog(LOG_TYPE_IRCD, "Error opening pid file %s", filename);
355	adx	30	}
356			}
357
358			/* check_pidfile()
359			*
360			* inputs - filename+path of pid file
361			* output - none
362			* side effects - reads pid from pidfile and checks if ircd is in process
363			* list. if it is, gracefully exits
364			* -kre
365			*/
366			static void
367			check_pidfile(const char *filename)
368			{
369	michael	1325	FILE *fb;
370	adx	30	char buff[32];
371			pid_t pidfromfile;
372
373			/* Don't do logging here, since we don't have log() initialised */
374	michael	1325	if ((fb = fopen(filename, "r")))
375	adx	30	{
376	michael	1325	if (fgets(buff, 20, fb) == NULL)
377	adx	30	{
378			/* log(L_ERROR, "Error reading from pid file %s (%s)", filename,
379			* strerror(errno));
380			*/
381			}
382			else
383			{
384			pidfromfile = atoi(buff);
385
386			if (!kill(pidfromfile, 0))
387			{
388			/* log(L_ERROR, "Server is already running"); */
389			printf("ircd: daemon is already running\n");
390			exit(-1);
391			}
392			}
393
394	michael	1325	fclose(fb);
395	adx	30	}
396			else if (errno != ENOENT)
397			{
398			/* log(L_ERROR, "Error opening pid file %s", filename); */
399			}
400			}
401
402			/* setup_corefile()
403			*
404			* inputs - nothing
405			* output - nothing
406			* side effects - setups corefile to system limits.
407			* -kre
408			*/
409			static void
410			setup_corefile(void)
411			{
412			#ifdef HAVE_SYS_RESOURCE_H
413			struct rlimit rlim; /* resource limits */
414
415			/* Set corefilesize to maximum */
416			if (!getrlimit(RLIMIT_CORE, &rlim))
417			{
418			rlim.rlim_cur = rlim.rlim_max;
419			setrlimit(RLIMIT_CORE, &rlim);
420			}
421			#endif
422			}
423
424			/* init_ssl()
425			*
426			* inputs - nothing
427			* output - nothing
428			* side effects - setups SSL context.
429			*/
430			static void
431			init_ssl(void)
432			{
433			#ifdef HAVE_LIBCRYPTO
434			SSL_load_error_strings();
435			SSLeay_add_ssl_algorithms();
436
437	michael	967	if ((ServerInfo.server_ctx = SSL_CTX_new(SSLv23_server_method())) == NULL)
438	adx	30	{
439			const char *s;
440
441	michael	1303	fprintf(stderr, "ERROR: Could not initialize the SSL Server context -- %s\n",
442	adx	30	s = ERR_lib_error_string(ERR_get_error()));
443	michael	1303	ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Server context -- %s\n", s);
444	adx	30	}
445
446	michael	1316	SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_NO_SSLv2\|SSL_OP_NO_SSLv3\|SSL_OP_NO_TLSv1);
447	michael	967	SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_TLS_ROLLBACK_BUG\|SSL_OP_ALL);
448			SSL_CTX_set_verify(ServerInfo.server_ctx, SSL_VERIFY_NONE, NULL);
449	adx	30
450	michael	1303	if ((ServerInfo.client_ctx = SSL_CTX_new(SSLv23_client_method())) == NULL)
451			{
452			const char *s;
453
454			fprintf(stderr, "ERROR: Could not initialize the SSL Client context -- %s\n",
455			s = ERR_lib_error_string(ERR_get_error()));
456			ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Client context -- %s\n", s);
457			}
458
459	michael	1316	SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_NO_SSLv2\|SSL_OP_NO_SSLv3\|SSL_OP_NO_TLSv1);
460	michael	1303	SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_TLS_ROLLBACK_BUG\|SSL_OP_ALL);
461			SSL_CTX_set_verify(ServerInfo.client_ctx, SSL_VERIFY_NONE, NULL);
462	adx	30	#endif /* HAVE_LIBCRYPTO */
463			}
464
465			/* init_callbacks()
466			*
467			* inputs - nothing
468			* output - nothing
469			* side effects - setups standard hook points
470			*/
471			static void
472			init_callbacks(void)
473			{
474	adx	163	iorecv_cb = register_callback("iorecv", iorecv_default);
475			iosend_cb = register_callback("iosend", iosend_default);
476	adx	30	}
477
478			int
479			main(int argc, char *argv[])
480			{
481			/* Check to see if the user is running
482			* us as root, which is a nono
483			*/
484			if (geteuid() == 0)
485			{
486			fprintf(stderr, "Don't run ircd as root!!!\n");
487	michael	982	return -1;
488	adx	30	}
489
490			/* Setup corefile size immediately after boot -kre */
491			setup_corefile();
492
493			/* save server boot time right away, so getrusage works correctly */
494			set_time();
495
496	michael	982	/* It ain't random, but it ought to be a little harder to guess */
497			init_genrand(SystemTime.tv_sec ^ (SystemTime.tv_usec \| (getpid() << 20)));
498
499	adx	30	me.localClient = &meLocalUser;
500			dlinkAdd(&me, &me.node, &global_client_list); /* Pointer to beginning
501			of Client list */
502			/* Initialise the channel capability usage counts... */
503			init_chcap_usage_counts();
504
505			ConfigFileEntry.dpath = DPATH;
506			ConfigFileEntry.configfile = CPATH; /* Server configuration file */
507			ConfigFileEntry.klinefile = KPATH; /* Server kline file */
508			ConfigFileEntry.xlinefile = XPATH; /* Server xline file */
509			ConfigFileEntry.dlinefile = DLPATH; /* dline file */
510	michael	1622	// ConfigFileEntry.cresvfile = CRESVPATH; /* channel resv file */
511			// ConfigFileEntry.nresvfile = NRESVPATH; /* nick resv file */
512	adx	30	myargv = argv;
513			umask(077); /* better safe than sorry --SRB */
514
515			parseargs(&argc, &argv, myopts);
516
517			if (printVersion)
518			{
519			printf("ircd: version %s\n", ircd_version);
520			exit(EXIT_SUCCESS);
521			}
522
523			if (chdir(ConfigFileEntry.dpath))
524			{
525			perror("chdir");
526			exit(EXIT_FAILURE);
527			}
528
529			init_ssl();
530
531			if (!server_state.foreground)
532			{
533			make_daemon();
534			close_standard_fds(); /* this needs to be before init_netio()! */
535			}
536			else
537			print_startup(getpid());
538
539			setup_signals();
540
541			/* Init the event subsystem */
542			eventInit();
543			/* We need this to initialise the fd array before anything else */
544			fdlist_init();
545	michael	1247	log_add_file(LOG_TYPE_IRCD, 0, logFileName);
546	adx	30	check_can_use_v6();
547			init_comm(); /* This needs to be setup early ! -- adrian */
548			/* Check if there is pidfile and daemon already running */
549			check_pidfile(pidFileName);
550
551	michael	1654	mp_pool_init();
552	adx	30	init_dlink_nodes();
553			init_callbacks();
554			initialize_message_files();
555			dbuf_init();
556			init_hash();
557			init_ip_hash_table(); /* client host ip hash table */
558			init_host_hash(); /* Host-hashtable. */
559			init_client();
560	michael	1632	class_init();
561	michael	1358	whowas_init();
562	michael	876	watch_init();
563	michael	998	init_auth(); /* Initialise the auth code */
564			init_resolver(); /* Needs to be setup before the io loop */
565	michael	1404	modules_init();
566	adx	30	read_conf_files(1); /* cold start init conf files */
567			init_uid();
568			initialize_server_capabs(); /* Set up default_server_capabs */
569			initialize_global_set_options();
570			init_channels();
571
572	michael	1115	if (EmptyString(ServerInfo.sid))
573	adx	30	{
574	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server id specified in serverinfo block.");
575	adx	30	exit(EXIT_FAILURE);
576			}
577	michael	885
578	michael	1115	strlcpy(me.id, ServerInfo.sid, sizeof(me.id));
579
580			if (EmptyString(ServerInfo.name))
581			{
582	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server name specified in serverinfo block.");
583	michael	1115	exit(EXIT_FAILURE);
584			}
585
586	adx	30	strlcpy(me.name, ServerInfo.name, sizeof(me.name));
587
588			/* serverinfo{} description must exist. If not, error out.*/
589	michael	1115	if (EmptyString(ServerInfo.description))
590	adx	30	{
591	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server description specified in serverinfo block.");
592	adx	30	exit(EXIT_FAILURE);
593			}
594	michael	885
595	adx	30	strlcpy(me.info, ServerInfo.description, sizeof(me.info));
596
597	michael	1241	me.from = &me;
598			me.servptr = &me;
599			me.localClient->lasttime = CurrentTime;
600			me.localClient->since = CurrentTime;
601			me.localClient->firsttime = CurrentTime;
602	adx	30
603			SetMe(&me);
604			make_server(&me);
605
606	michael	1115	hash_add_id(&me);
607	adx	30	hash_add_client(&me);
608
609			/* add ourselves to global_serv_list */
610			dlinkAdd(&me, make_dlink_node(), &global_serv_list);
611
612	michael	1622	load_kline_database();
613			load_dline_database();
614			load_gline_database();
615			load_xline_database();
616			load_resv_database();
617
618	adx	30	if (chdir(MODPATH))
619			{
620	michael	1247	ilog(LOG_TYPE_IRCD, "Could not load core modules. Terminating!");
621	adx	30	exit(EXIT_FAILURE);
622			}
623
624			load_all_modules(1);
625			load_conf_modules();
626			load_core_modules(1);
627	michael	1115
628	adx	30	/* Go back to DPATH after checking to see if we can chdir to MODPATH */
629	michael	1115	if (chdir(ConfigFileEntry.dpath))
630			{
631			perror("chdir");
632			exit(EXIT_FAILURE);
633			}
634	michael	1121
635	adx	30	/*
636			* assemble_umode_buffer() has to be called after
637			* reading conf/loading modules.
638			*/
639			assemble_umode_buffer();
640
641			write_pidfile(pidFileName);
642
643	michael	1247	ilog(LOG_TYPE_IRCD, "Server Ready");
644	adx	30
645			eventAddIsh("cleanup_glines", cleanup_glines, NULL, CLEANUP_GLINES_TIME);
646			eventAddIsh("cleanup_tklines", cleanup_tklines, NULL, CLEANUP_TKLINES_TIME);
647
648			/* We want try_connections to be called as soon as possible now! -- adrian */
649			/* No, 'cause after a restart it would cause all sorts of nick collides */
650			eventAddIsh("try_connections", try_connections, NULL, STARTUP_CONNECTIONS_TIME);
651
652			/* Setup the timeout check. I'll shift it later :) -- adrian */
653			eventAddIsh("comm_checktimeouts", comm_checktimeouts, NULL, 1);
654
655	michael	1625	eventAddIsh("save_all_databases", save_all_databases, NULL, DATABASE_UPDATE_TIMEOUT);
656
657	adx	30	if (ConfigServerHide.links_delay > 0)
658			eventAddIsh("write_links_file", write_links_file, NULL, ConfigServerHide.links_delay);
659			else
660			ConfigServerHide.links_disabled = 1;
661
662			if (splitmode)
663			eventAddIsh("check_splitmode", check_splitmode, NULL, 60);
664
665			io_loop();
666	michael	885	return 0;
667	adx	30	}