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[] = {
  {"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
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.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);
  }

  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:	1718
Committed:	Thu Dec 27 19:03:00 2012 UTC (12 years, 8 months ago) by michael
Content type:	text/x-csrc
File size:	17724 byte(s)
Log Message:	- src/ircd.c: minor updates to myopts[] commandline options
#	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	{"configfile", &ConfigFileEntry.configfile,
147			STRING, "File to use for ircd.conf"},
148	michael	1718	{"glinefile", &ConfigFileEntry.glinefile,
149			STRING, "File to use for gline database"},
150	adx	30	{"klinefile", &ConfigFileEntry.klinefile,
151	michael	1718	STRING, "File to use for kline database"},
152			{"dlinefile", &ConfigFileEntry.dlinefile,
153			STRING, "File to use for dline database"},
154	adx	30	{"xlinefile", &ConfigFileEntry.xlinefile,
155	michael	1718	STRING, "File to use for xline database"},
156			{"resvfile", &ConfigFileEntry.resvfile,
157			STRING, "File to use for resv database"},
158	adx	30	{"logfile", &logFileName,
159			STRING, "File to use for ircd.log"},
160			{"pidfile", &pidFileName,
161			STRING, "File to use for process ID"},
162			{"foreground", &server_state.foreground,
163			YESNO, "Run in foreground (don't detach)"},
164			{"version", &printVersion,
165			YESNO, "Print version and exit"},
166			{"help", NULL, USAGE, "Print this text"},
167			{NULL, NULL, STRING, NULL},
168			};
169
170			void
171			set_time(void)
172			{
173			static char to_send[200];
174			struct timeval newtime;
175			newtime.tv_sec = 0;
176			newtime.tv_usec = 0;
177
178			if (gettimeofday(&newtime, NULL) == -1)
179			{
180	michael	1247	ilog(LOG_TYPE_IRCD, "Clock Failure (%s), TS can be corrupted",
181	adx	30	strerror(errno));
182	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
183	adx	30	"Clock Failure (%s), TS can be corrupted",
184			strerror(errno));
185			restart("Clock Failure");
186			}
187
188			if (newtime.tv_sec < CurrentTime)
189			{
190	michael	1124	snprintf(to_send, sizeof(to_send),
191			"System clock is running backwards - (%lu < %lu)",
192			(unsigned long)newtime.tv_sec, (unsigned long)CurrentTime);
193	adx	30	report_error(L_ALL, to_send, me.name, 0);
194			set_back_events(CurrentTime - newtime.tv_sec);
195			}
196
197			SystemTime.tv_sec = newtime.tv_sec;
198			SystemTime.tv_usec = newtime.tv_usec;
199			}
200
201			static void
202			io_loop(void)
203			{
204			while (1 == 1)
205			{
206			/*
207			* Maybe we want a flags word?
208			* ie. if (REHASHED_KLINES(global_flags))
209			* SET_REHASHED_KLINES(global_flags)
210			* CLEAR_REHASHED_KLINES(global_flags)
211			*
212			* - Dianora
213			*/
214			if (rehashed_klines)
215			{
216			check_conf_klines();
217			rehashed_klines = 0;
218			}
219
220			if (listing_client_list.head)
221			{
222			dlink_node ptr = NULL, ptr_next = NULL;
223			DLINK_FOREACH_SAFE(ptr, ptr_next, listing_client_list.head)
224			{
225			struct Client *client_p = ptr->data;
226			assert(client_p->localClient->list_task);
227	michael	896	safe_list_channels(client_p, client_p->localClient->list_task, 0);
228	adx	30	}
229			}
230
231			/* Run pending events, then get the number of seconds to the next
232			* event
233			*/
234			while (eventNextTime() <= CurrentTime)
235			eventRun();
236
237			comm_select();
238			exit_aborted_clients();
239			free_exited_clients();
240			send_queued_all();
241
242			/* Check to see whether we have to rehash the configuration .. */
243			if (dorehash)
244			{
245			rehash(1);
246			dorehash = 0;
247			}
248			if (doremotd)
249			{
250			read_message_file(&ConfigFileEntry.motd);
251	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
252	adx	30	"Got signal SIGUSR1, reloading ircd motd file");
253			doremotd = 0;
254			}
255			}
256			}
257
258			/* initalialize_global_set_options()
259			*
260			* inputs - none
261			* output - none
262			* side effects - This sets all global set options needed
263			*/
264			static void
265			initialize_global_set_options(void)
266			{
267			memset(&GlobalSetOptions, 0, sizeof(GlobalSetOptions));
268
269			GlobalSetOptions.autoconn = 1;
270			GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
271			GlobalSetOptions.spam_num = MAX_JOIN_LEAVE_COUNT;
272
273			if (ConfigFileEntry.default_floodcount)
274			GlobalSetOptions.floodcount = ConfigFileEntry.default_floodcount;
275			else
276			GlobalSetOptions.floodcount = 10;
277
278			/* XXX I have no idea what to try here - Dianora */
279			GlobalSetOptions.joinfloodcount = 16;
280			GlobalSetOptions.joinfloodtime = 8;
281
282			split_servers = ConfigChannel.default_split_server_count;
283			split_users = ConfigChannel.default_split_user_count;
284
285			if (split_users && split_servers && (ConfigChannel.no_create_on_split \|\|
286			ConfigChannel.no_join_on_split))
287			{
288			splitmode = 1;
289			splitchecking = 1;
290			}
291
292			GlobalSetOptions.ident_timeout = IDENT_TIMEOUT;
293			/* End of global set options */
294			}
295
296			/* initialize_message_files()
297			*
298			* inputs - none
299			* output - none
300			* side effects - Set up all message files needed, motd etc.
301			*/
302			static void
303			initialize_message_files(void)
304			{
305			init_message_file(USER_MOTD, MPATH, &ConfigFileEntry.motd);
306			init_message_file(USER_LINKS, LIPATH, &ConfigFileEntry.linksfile);
307
308			read_message_file(&ConfigFileEntry.motd);
309			read_message_file(&ConfigFileEntry.linksfile);
310
311			init_isupport();
312			}
313
314			/* initialize_server_capabs()
315			*
316			* inputs - none
317			* output - none
318			*/
319			static void
320			initialize_server_capabs(void)
321			{
322			add_capability("QS", CAP_QS, 1);
323			add_capability("EOB", CAP_EOB, 1);
324	michael	1117	add_capability("TS6", CAP_TS6, 0);
325	adx	30	add_capability("CLUSTER", CAP_CLUSTER, 1);
326	michael	1196	add_capability("SVS", CAP_SVS, 1);
327	adx	30	#ifdef HALFOPS
328			add_capability("HOPS", CAP_HOPS, 1);
329			#endif
330			}
331
332			/* write_pidfile()
333			*
334			* inputs - filename+path of pid file
335			* output - NONE
336			* side effects - write the pid of the ircd to filename
337			*/
338			static void
339			write_pidfile(const char *filename)
340			{
341	michael	1325	FILE *fb;
342	adx	30
343	michael	1325	if ((fb = fopen(filename, "w")))
344	adx	30	{
345			char buff[32];
346			unsigned int pid = (unsigned int)getpid();
347
348	michael	1325	snprintf(buff, sizeof(buff), "%u\n", pid);
349
350			if ((fputs(buff, fb) == -1))
351	michael	1247	ilog(LOG_TYPE_IRCD, "Error writing %u to pid file %s (%s)",
352	adx	30	pid, filename, strerror(errno));
353
354	michael	1325	fclose(fb);
355	adx	30	}
356			else
357			{
358	michael	1247	ilog(LOG_TYPE_IRCD, "Error opening pid file %s", filename);
359	adx	30	}
360			}
361
362			/* check_pidfile()
363			*
364			* inputs - filename+path of pid file
365			* output - none
366			* side effects - reads pid from pidfile and checks if ircd is in process
367			* list. if it is, gracefully exits
368			* -kre
369			*/
370			static void
371			check_pidfile(const char *filename)
372			{
373	michael	1325	FILE *fb;
374	adx	30	char buff[32];
375			pid_t pidfromfile;
376
377			/* Don't do logging here, since we don't have log() initialised */
378	michael	1325	if ((fb = fopen(filename, "r")))
379	adx	30	{
380	michael	1325	if (fgets(buff, 20, fb) == NULL)
381	adx	30	{
382			/* log(L_ERROR, "Error reading from pid file %s (%s)", filename,
383			* strerror(errno));
384			*/
385			}
386			else
387			{
388			pidfromfile = atoi(buff);
389
390			if (!kill(pidfromfile, 0))
391			{
392			/* log(L_ERROR, "Server is already running"); */
393			printf("ircd: daemon is already running\n");
394			exit(-1);
395			}
396			}
397
398	michael	1325	fclose(fb);
399	adx	30	}
400			else if (errno != ENOENT)
401			{
402			/* log(L_ERROR, "Error opening pid file %s", filename); */
403			}
404			}
405
406			/* setup_corefile()
407			*
408			* inputs - nothing
409			* output - nothing
410			* side effects - setups corefile to system limits.
411			* -kre
412			*/
413			static void
414			setup_corefile(void)
415			{
416			#ifdef HAVE_SYS_RESOURCE_H
417			struct rlimit rlim; /* resource limits */
418
419			/* Set corefilesize to maximum */
420			if (!getrlimit(RLIMIT_CORE, &rlim))
421			{
422			rlim.rlim_cur = rlim.rlim_max;
423			setrlimit(RLIMIT_CORE, &rlim);
424			}
425			#endif
426			}
427
428			/* init_ssl()
429			*
430			* inputs - nothing
431			* output - nothing
432			* side effects - setups SSL context.
433			*/
434			static void
435			init_ssl(void)
436			{
437			#ifdef HAVE_LIBCRYPTO
438			SSL_load_error_strings();
439			SSLeay_add_ssl_algorithms();
440
441	michael	967	if ((ServerInfo.server_ctx = SSL_CTX_new(SSLv23_server_method())) == NULL)
442	adx	30	{
443			const char *s;
444
445	michael	1303	fprintf(stderr, "ERROR: Could not initialize the SSL Server context -- %s\n",
446	adx	30	s = ERR_lib_error_string(ERR_get_error()));
447	michael	1303	ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Server context -- %s\n", s);
448	adx	30	}
449
450	michael	1316	SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_NO_SSLv2\|SSL_OP_NO_SSLv3\|SSL_OP_NO_TLSv1);
451	michael	967	SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_TLS_ROLLBACK_BUG\|SSL_OP_ALL);
452			SSL_CTX_set_verify(ServerInfo.server_ctx, SSL_VERIFY_NONE, NULL);
453	adx	30
454	michael	1303	if ((ServerInfo.client_ctx = SSL_CTX_new(SSLv23_client_method())) == NULL)
455			{
456			const char *s;
457
458			fprintf(stderr, "ERROR: Could not initialize the SSL Client context -- %s\n",
459			s = ERR_lib_error_string(ERR_get_error()));
460			ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Client context -- %s\n", s);
461			}
462
463	michael	1316	SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_NO_SSLv2\|SSL_OP_NO_SSLv3\|SSL_OP_NO_TLSv1);
464	michael	1303	SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_TLS_ROLLBACK_BUG\|SSL_OP_ALL);
465			SSL_CTX_set_verify(ServerInfo.client_ctx, SSL_VERIFY_NONE, NULL);
466	adx	30	#endif /* HAVE_LIBCRYPTO */
467			}
468
469			/* init_callbacks()
470			*
471			* inputs - nothing
472			* output - nothing
473			* side effects - setups standard hook points
474			*/
475			static void
476			init_callbacks(void)
477			{
478	adx	163	iorecv_cb = register_callback("iorecv", iorecv_default);
479			iosend_cb = register_callback("iosend", iosend_default);
480	adx	30	}
481
482			int
483			main(int argc, char *argv[])
484			{
485			/* Check to see if the user is running
486			* us as root, which is a nono
487			*/
488			if (geteuid() == 0)
489			{
490			fprintf(stderr, "Don't run ircd as root!!!\n");
491	michael	982	return -1;
492	adx	30	}
493
494			/* Setup corefile size immediately after boot -kre */
495			setup_corefile();
496
497			/* save server boot time right away, so getrusage works correctly */
498			set_time();
499
500	michael	982	/* It ain't random, but it ought to be a little harder to guess */
501			init_genrand(SystemTime.tv_sec ^ (SystemTime.tv_usec \| (getpid() << 20)));
502
503	adx	30	me.localClient = &meLocalUser;
504			dlinkAdd(&me, &me.node, &global_client_list); /* Pointer to beginning
505			of Client list */
506			/* Initialise the channel capability usage counts... */
507			init_chcap_usage_counts();
508
509			ConfigFileEntry.dpath = DPATH;
510	michael	1702	ConfigFileEntry.configfile = CPATH; /* Server configuration file */
511			ConfigFileEntry.klinefile = KPATH; /* Server kline file */
512	michael	1718	ConfigFileEntry.glinefile = GPATH; /* Server gline file */
513	michael	1702	ConfigFileEntry.xlinefile = XPATH; /* Server xline file */
514			ConfigFileEntry.dlinefile = DLPATH; /* dline file */
515			ConfigFileEntry.resvfile = RESVPATH; /* resv file */
516
517	adx	30	myargv = argv;
518			umask(077); /* better safe than sorry --SRB */
519
520			parseargs(&argc, &argv, myopts);
521
522			if (printVersion)
523			{
524			printf("ircd: version %s\n", ircd_version);
525			exit(EXIT_SUCCESS);
526			}
527
528			if (chdir(ConfigFileEntry.dpath))
529			{
530			perror("chdir");
531			exit(EXIT_FAILURE);
532			}
533
534			init_ssl();
535
536			if (!server_state.foreground)
537			{
538			make_daemon();
539			close_standard_fds(); /* this needs to be before init_netio()! */
540			}
541			else
542			print_startup(getpid());
543
544			setup_signals();
545
546			/* Init the event subsystem */
547			eventInit();
548			/* We need this to initialise the fd array before anything else */
549			fdlist_init();
550	michael	1247	log_add_file(LOG_TYPE_IRCD, 0, logFileName);
551	adx	30	check_can_use_v6();
552			init_comm(); /* This needs to be setup early ! -- adrian */
553			/* Check if there is pidfile and daemon already running */
554			check_pidfile(pidFileName);
555
556	michael	1654	mp_pool_init();
557	adx	30	init_dlink_nodes();
558			init_callbacks();
559			initialize_message_files();
560			dbuf_init();
561			init_hash();
562			init_ip_hash_table(); /* client host ip hash table */
563			init_host_hash(); /* Host-hashtable. */
564			init_client();
565	michael	1632	class_init();
566	michael	1358	whowas_init();
567	michael	876	watch_init();
568	michael	998	init_auth(); /* Initialise the auth code */
569			init_resolver(); /* Needs to be setup before the io loop */
570	michael	1404	modules_init();
571	adx	30	read_conf_files(1); /* cold start init conf files */
572			init_uid();
573			initialize_server_capabs(); /* Set up default_server_capabs */
574			initialize_global_set_options();
575			init_channels();
576
577	michael	1115	if (EmptyString(ServerInfo.sid))
578	adx	30	{
579	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server id specified in serverinfo block.");
580	adx	30	exit(EXIT_FAILURE);
581			}
582	michael	885
583	michael	1115	strlcpy(me.id, ServerInfo.sid, sizeof(me.id));
584
585			if (EmptyString(ServerInfo.name))
586			{
587	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server name specified in serverinfo block.");
588	michael	1115	exit(EXIT_FAILURE);
589			}
590
591	adx	30	strlcpy(me.name, ServerInfo.name, sizeof(me.name));
592
593			/* serverinfo{} description must exist. If not, error out.*/
594	michael	1115	if (EmptyString(ServerInfo.description))
595	adx	30	{
596	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server description specified in serverinfo block.");
597	adx	30	exit(EXIT_FAILURE);
598			}
599	michael	885
600	adx	30	strlcpy(me.info, ServerInfo.description, sizeof(me.info));
601
602	michael	1241	me.from = &me;
603			me.servptr = &me;
604			me.localClient->lasttime = CurrentTime;
605			me.localClient->since = CurrentTime;
606			me.localClient->firsttime = CurrentTime;
607	adx	30
608			SetMe(&me);
609			make_server(&me);
610
611	michael	1115	hash_add_id(&me);
612	adx	30	hash_add_client(&me);
613
614			/* add ourselves to global_serv_list */
615			dlinkAdd(&me, make_dlink_node(), &global_serv_list);
616
617	michael	1622	load_kline_database();
618			load_dline_database();
619			load_gline_database();
620			load_xline_database();
621			load_resv_database();
622
623	adx	30	if (chdir(MODPATH))
624			{
625	michael	1247	ilog(LOG_TYPE_IRCD, "Could not load core modules. Terminating!");
626	adx	30	exit(EXIT_FAILURE);
627			}
628
629			load_all_modules(1);
630			load_conf_modules();
631			load_core_modules(1);
632	michael	1115
633	adx	30	/* Go back to DPATH after checking to see if we can chdir to MODPATH */
634	michael	1115	if (chdir(ConfigFileEntry.dpath))
635			{
636			perror("chdir");
637			exit(EXIT_FAILURE);
638			}
639	michael	1121
640	adx	30	/*
641			* assemble_umode_buffer() has to be called after
642			* reading conf/loading modules.
643			*/
644			assemble_umode_buffer();
645
646			write_pidfile(pidFileName);
647
648	michael	1247	ilog(LOG_TYPE_IRCD, "Server Ready");
649	adx	30
650			eventAddIsh("cleanup_glines", cleanup_glines, NULL, CLEANUP_GLINES_TIME);
651			eventAddIsh("cleanup_tklines", cleanup_tklines, NULL, CLEANUP_TKLINES_TIME);
652
653			/* We want try_connections to be called as soon as possible now! -- adrian */
654			/* No, 'cause after a restart it would cause all sorts of nick collides */
655			eventAddIsh("try_connections", try_connections, NULL, STARTUP_CONNECTIONS_TIME);
656
657			/* Setup the timeout check. I'll shift it later :) -- adrian */
658			eventAddIsh("comm_checktimeouts", comm_checktimeouts, NULL, 1);
659
660	michael	1625	eventAddIsh("save_all_databases", save_all_databases, NULL, DATABASE_UPDATE_TIMEOUT);
661
662	adx	30	if (ConfigServerHide.links_delay > 0)
663			eventAddIsh("write_links_file", write_links_file, NULL, ConfigServerHide.links_delay);
664			else
665			ConfigServerHide.links_disabled = 1;
666
667			if (splitmode)
668			eventAddIsh("check_splitmode", check_splitmode, NULL, 60);
669
670			io_loop();
671	michael	885	return 0;
672	adx	30	}