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 "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 "conf.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 "hook.h"
#include "ircd_getopt.h"
#include "balloc.h"
#include "motd.h"
#include "supported.h"
#include "watch.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;
char ircd_platform[PLATFORMLEN];

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,
                         "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,
                           "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(OPER_MOTD, OPATH, &ConfigFileEntry.opermotd);
  init_message_file(USER_LINKS, LIPATH, &ConfigFileEntry.linksfile);

  read_message_file(&ConfigFileEntry.motd);
  read_message_file(&ConfigFileEntry.opermotd);
  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.rxlinefile = RXPATH; /* Server regex xline file   */
  ConfigFileEntry.rklinefile = RKPATH; /* Server regex kline file   */
  ConfigFileEntry.dlinefile  = DLPATH; /* dline file                */
  ConfigFileEntry.glinefile  = GPATH;  /* gline log 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();

  get_ircd_platform(ircd_platform);

  /* 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);

  initBlockHeap();
  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. */
  clear_tree_parse();
  init_client();
  init_class();
  init_whowas();
  watch_init();
  init_auth();          /* Initialise the auth code */
  init_resolver();      /* Needs to be setup before the io loop */
  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);

  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);

  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:	1357
Committed:	Sat Apr 21 20:47:01 2012 UTC (13 years, 4 months ago) by michael
Content type:	text/x-csrc
Original Path:	*ircd-hybrid-8/src/ircd.c*
File size:	17638 byte(s)
Log Message:	- minor cleanups to the getopt code
#	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			#include "hostmask.h"
40			#include "numeric.h"
41			#include "packet.h"
42			#include "parse.h"
43			#include "irc_res.h"
44			#include "restart.h"
45	michael	982	#include "rng_mt.h"
46	adx	30	#include "s_auth.h"
47			#include "s_bsd.h"
48	michael	1309	#include "conf.h"
49			#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			#include "hook.h"
57			#include "ircd_getopt.h"
58			#include "balloc.h"
59			#include "motd.h"
60			#include "supported.h"
61	michael	876	#include "watch.h"
62	adx	30
63
64			/* /quote set variables */
65			struct SetOptions GlobalSetOptions;
66
67			/* configuration set from ircd.conf */
68			struct config_file_entry ConfigFileEntry;
69			/* server info set from ircd.conf */
70			struct server_info ServerInfo;
71			/* admin info set from ircd.conf */
72			struct admin_info AdminInfo = { NULL, NULL, NULL };
73	michael	1145	struct Counter Count = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
74	adx	30	struct ServerState_t server_state = { 0 };
75	michael	1324	struct logging_entry ConfigLoggingEntry = { .use_logging = 1 };
76	michael	896	struct ServerStatistics ServerStats;
77	adx	30	struct timeval SystemTime;
78			struct Client me; /* That's me */
79			struct LocalUser meLocalUser; /* That's also part of me */
80
81			const char *logFileName = LPATH;
82			const char *pidFileName = PPATH;
83
84			char **myargv;
85			char ircd_platform[PLATFORMLEN];
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			sendto_realops_flags(UMODE_ALL, L_ALL,
179			"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			sendto_realops_flags(UMODE_ALL, L_ALL,
248			"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(OPER_MOTD, OPATH, &ConfigFileEntry.opermotd);
303			init_message_file(USER_LINKS, LIPATH, &ConfigFileEntry.linksfile);
304
305			read_message_file(&ConfigFileEntry.motd);
306			read_message_file(&ConfigFileEntry.opermotd);
307			read_message_file(&ConfigFileEntry.linksfile);
308
309			init_isupport();
310			}
311
312			/* initialize_server_capabs()
313			*
314			* inputs - none
315			* output - none
316			*/
317			static void
318			initialize_server_capabs(void)
319			{
320			add_capability("QS", CAP_QS, 1);
321			add_capability("EOB", CAP_EOB, 1);
322	michael	1117	add_capability("TS6", CAP_TS6, 0);
323	adx	30	add_capability("CLUSTER", CAP_CLUSTER, 1);
324	michael	1196	add_capability("SVS", CAP_SVS, 1);
325	adx	30	#ifdef HALFOPS
326			add_capability("HOPS", CAP_HOPS, 1);
327			#endif
328			}
329
330			/* write_pidfile()
331			*
332			* inputs - filename+path of pid file
333			* output - NONE
334			* side effects - write the pid of the ircd to filename
335			*/
336			static void
337			write_pidfile(const char *filename)
338			{
339	michael	1325	FILE *fb;
340	adx	30
341	michael	1325	if ((fb = fopen(filename, "w")))
342	adx	30	{
343			char buff[32];
344			unsigned int pid = (unsigned int)getpid();
345
346	michael	1325	snprintf(buff, sizeof(buff), "%u\n", pid);
347
348			if ((fputs(buff, fb) == -1))
349	michael	1247	ilog(LOG_TYPE_IRCD, "Error writing %u to pid file %s (%s)",
350	adx	30	pid, filename, strerror(errno));
351
352	michael	1325	fclose(fb);
353	adx	30	}
354			else
355			{
356	michael	1247	ilog(LOG_TYPE_IRCD, "Error opening pid file %s", filename);
357	adx	30	}
358			}
359
360			/* check_pidfile()
361			*
362			* inputs - filename+path of pid file
363			* output - none
364			* side effects - reads pid from pidfile and checks if ircd is in process
365			* list. if it is, gracefully exits
366			* -kre
367			*/
368			static void
369			check_pidfile(const char *filename)
370			{
371	michael	1325	FILE *fb;
372	adx	30	char buff[32];
373			pid_t pidfromfile;
374
375			/* Don't do logging here, since we don't have log() initialised */
376	michael	1325	if ((fb = fopen(filename, "r")))
377	adx	30	{
378	michael	1325	if (fgets(buff, 20, fb) == NULL)
379	adx	30	{
380			/* log(L_ERROR, "Error reading from pid file %s (%s)", filename,
381			* strerror(errno));
382			*/
383			}
384			else
385			{
386			pidfromfile = atoi(buff);
387
388			if (!kill(pidfromfile, 0))
389			{
390			/* log(L_ERROR, "Server is already running"); */
391			printf("ircd: daemon is already running\n");
392			exit(-1);
393			}
394			}
395
396	michael	1325	fclose(fb);
397	adx	30	}
398			else if (errno != ENOENT)
399			{
400			/* log(L_ERROR, "Error opening pid file %s", filename); */
401			}
402			}
403
404			/* setup_corefile()
405			*
406			* inputs - nothing
407			* output - nothing
408			* side effects - setups corefile to system limits.
409			* -kre
410			*/
411			static void
412			setup_corefile(void)
413			{
414			#ifdef HAVE_SYS_RESOURCE_H
415			struct rlimit rlim; /* resource limits */
416
417			/* Set corefilesize to maximum */
418			if (!getrlimit(RLIMIT_CORE, &rlim))
419			{
420			rlim.rlim_cur = rlim.rlim_max;
421			setrlimit(RLIMIT_CORE, &rlim);
422			}
423			#endif
424			}
425
426			/* init_ssl()
427			*
428			* inputs - nothing
429			* output - nothing
430			* side effects - setups SSL context.
431			*/
432			static void
433			init_ssl(void)
434			{
435			#ifdef HAVE_LIBCRYPTO
436			SSL_load_error_strings();
437			SSLeay_add_ssl_algorithms();
438
439	michael	967	if ((ServerInfo.server_ctx = SSL_CTX_new(SSLv23_server_method())) == NULL)
440	adx	30	{
441			const char *s;
442
443	michael	1303	fprintf(stderr, "ERROR: Could not initialize the SSL Server context -- %s\n",
444	adx	30	s = ERR_lib_error_string(ERR_get_error()));
445	michael	1303	ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Server context -- %s\n", s);
446	adx	30	}
447
448	michael	1316	SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_NO_SSLv2\|SSL_OP_NO_SSLv3\|SSL_OP_NO_TLSv1);
449	michael	967	SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_TLS_ROLLBACK_BUG\|SSL_OP_ALL);
450			SSL_CTX_set_verify(ServerInfo.server_ctx, SSL_VERIFY_NONE, NULL);
451	adx	30
452	michael	1303	if ((ServerInfo.client_ctx = SSL_CTX_new(SSLv23_client_method())) == NULL)
453			{
454			const char *s;
455
456			fprintf(stderr, "ERROR: Could not initialize the SSL Client context -- %s\n",
457			s = ERR_lib_error_string(ERR_get_error()));
458			ilog(LOG_TYPE_IRCD, "ERROR: Could not initialize the SSL Client context -- %s\n", s);
459			}
460
461	michael	1316	SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_NO_SSLv2\|SSL_OP_NO_SSLv3\|SSL_OP_NO_TLSv1);
462	michael	1303	SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_TLS_ROLLBACK_BUG\|SSL_OP_ALL);
463			SSL_CTX_set_verify(ServerInfo.client_ctx, SSL_VERIFY_NONE, NULL);
464	adx	30	#endif /* HAVE_LIBCRYPTO */
465			}
466
467			/* init_callbacks()
468			*
469			* inputs - nothing
470			* output - nothing
471			* side effects - setups standard hook points
472			*/
473			static void
474			init_callbacks(void)
475			{
476	adx	163	iorecv_cb = register_callback("iorecv", iorecv_default);
477			iosend_cb = register_callback("iosend", iosend_default);
478	adx	30	}
479
480			int
481			main(int argc, char *argv[])
482			{
483			/* Check to see if the user is running
484			* us as root, which is a nono
485			*/
486			if (geteuid() == 0)
487			{
488			fprintf(stderr, "Don't run ircd as root!!!\n");
489	michael	982	return -1;
490	adx	30	}
491
492			/* Setup corefile size immediately after boot -kre */
493			setup_corefile();
494
495			/* save server boot time right away, so getrusage works correctly */
496			set_time();
497
498	michael	982	/* It ain't random, but it ought to be a little harder to guess */
499			init_genrand(SystemTime.tv_sec ^ (SystemTime.tv_usec \| (getpid() << 20)));
500
501	adx	30	me.localClient = &meLocalUser;
502			dlinkAdd(&me, &me.node, &global_client_list); /* Pointer to beginning
503			of Client list */
504			/* Initialise the channel capability usage counts... */
505			init_chcap_usage_counts();
506
507			ConfigFileEntry.dpath = DPATH;
508			ConfigFileEntry.configfile = CPATH; /* Server configuration file */
509			ConfigFileEntry.klinefile = KPATH; /* Server kline file */
510			ConfigFileEntry.xlinefile = XPATH; /* Server xline file */
511			ConfigFileEntry.rxlinefile = RXPATH; /* Server regex xline file */
512			ConfigFileEntry.rklinefile = RKPATH; /* Server regex kline file */
513			ConfigFileEntry.dlinefile = DLPATH; /* dline file */
514			ConfigFileEntry.glinefile = GPATH; /* gline log file */
515			ConfigFileEntry.cresvfile = CRESVPATH; /* channel resv file */
516			ConfigFileEntry.nresvfile = NRESVPATH; /* nick resv file */
517			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			get_ircd_platform(ircd_platform);
547
548			/* Init the event subsystem */
549			eventInit();
550			/* We need this to initialise the fd array before anything else */
551			fdlist_init();
552	michael	1247	log_add_file(LOG_TYPE_IRCD, 0, logFileName);
553	adx	30	check_can_use_v6();
554			init_comm(); /* This needs to be setup early ! -- adrian */
555			/* Check if there is pidfile and daemon already running */
556			check_pidfile(pidFileName);
557
558			initBlockHeap();
559			init_dlink_nodes();
560			init_callbacks();
561			initialize_message_files();
562			dbuf_init();
563			init_hash();
564			init_ip_hash_table(); /* client host ip hash table */
565			init_host_hash(); /* Host-hashtable. */
566			clear_tree_parse();
567			init_client();
568			init_class();
569			init_whowas();
570	michael	876	watch_init();
571	michael	998	init_auth(); /* Initialise the auth code */
572			init_resolver(); /* Needs to be setup before the io loop */
573	adx	30	read_conf_files(1); /* cold start init conf files */
574			init_uid();
575			initialize_server_capabs(); /* Set up default_server_capabs */
576			initialize_global_set_options();
577			init_channels();
578
579	michael	1115	if (EmptyString(ServerInfo.sid))
580	adx	30	{
581	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server id specified in serverinfo block.");
582	adx	30	exit(EXIT_FAILURE);
583			}
584	michael	885
585	michael	1115	strlcpy(me.id, ServerInfo.sid, sizeof(me.id));
586
587			if (EmptyString(ServerInfo.name))
588			{
589	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server name specified in serverinfo block.");
590	michael	1115	exit(EXIT_FAILURE);
591			}
592
593	adx	30	strlcpy(me.name, ServerInfo.name, sizeof(me.name));
594
595			/* serverinfo{} description must exist. If not, error out.*/
596	michael	1115	if (EmptyString(ServerInfo.description))
597	adx	30	{
598	michael	1247	ilog(LOG_TYPE_IRCD, "ERROR: No server description specified in serverinfo block.");
599	adx	30	exit(EXIT_FAILURE);
600			}
601	michael	885
602	adx	30	strlcpy(me.info, ServerInfo.description, sizeof(me.info));
603
604	michael	1241	me.from = &me;
605			me.servptr = &me;
606			me.localClient->lasttime = CurrentTime;
607			me.localClient->since = CurrentTime;
608			me.localClient->firsttime = CurrentTime;
609	adx	30
610			SetMe(&me);
611			make_server(&me);
612
613	michael	1115	hash_add_id(&me);
614	adx	30	hash_add_client(&me);
615
616			/* add ourselves to global_serv_list */
617			dlinkAdd(&me, make_dlink_node(), &global_serv_list);
618
619			if (chdir(MODPATH))
620			{
621	michael	1247	ilog(LOG_TYPE_IRCD, "Could not load core modules. Terminating!");
622	adx	30	exit(EXIT_FAILURE);
623			}
624
625			load_all_modules(1);
626			load_conf_modules();
627			load_core_modules(1);
628	michael	1115
629	adx	30	/* Go back to DPATH after checking to see if we can chdir to MODPATH */
630	michael	1115	if (chdir(ConfigFileEntry.dpath))
631			{
632			perror("chdir");
633			exit(EXIT_FAILURE);
634			}
635	michael	1121
636	adx	30	/*
637			* assemble_umode_buffer() has to be called after
638			* reading conf/loading modules.
639			*/
640			assemble_umode_buffer();
641
642			write_pidfile(pidFileName);
643
644	michael	1247	ilog(LOG_TYPE_IRCD, "Server Ready");
645	adx	30
646			eventAddIsh("cleanup_glines", cleanup_glines, NULL, CLEANUP_GLINES_TIME);
647			eventAddIsh("cleanup_tklines", cleanup_tklines, NULL, CLEANUP_TKLINES_TIME);
648
649			/* We want try_connections to be called as soon as possible now! -- adrian */
650			/* No, 'cause after a restart it would cause all sorts of nick collides */
651			eventAddIsh("try_connections", try_connections, NULL, STARTUP_CONNECTIONS_TIME);
652
653			/* Setup the timeout check. I'll shift it later :) -- adrian */
654			eventAddIsh("comm_checktimeouts", comm_checktimeouts, NULL, 1);
655
656			if (ConfigServerHide.links_delay > 0)
657			eventAddIsh("write_links_file", write_links_file, NULL, ConfigServerHide.links_delay);
658			else
659			ConfigServerHide.links_disabled = 1;
660
661			if (splitmode)
662			eventAddIsh("check_splitmode", check_splitmode, NULL, 60);
663
664			io_loop();
665	michael	885	return 0;
666	adx	30	}