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 "tools.h"
#include "ircd.h"
#include "channel.h"
#include "channel_mode.h"
#include "client.h"
#include "common.h"
#include "event.h"
#include "fdlist.h"
#include "hash.h"
#include "irc_string.h"
#include "sprintf_irc.h"
#include "ircd_signal.h"
#include "list.h"
#include "s_gline.h"
#include "motd.h"
#include "ircd_handler.h"
#include "msg.h"         /* msgtab */
#include "hostmask.h"
#include "numeric.h"
#include "packet.h"
#include "parse.h"
#include "irc_res.h"
#include "restart.h"
#include "s_auth.h"
#include "s_bsd.h"
#include "s_conf.h"
#include "s_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"

/* Try and find the correct name to use with getrlimit() for setting the max.
 * number of files allowed to be open by this process.
 */

/* /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 };
struct ServerState_t server_state = { 0 };
struct logging_entry ConfigLoggingEntry = { 1, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0} }; 
struct ServerStatistics ServerStats;
struct timeval SystemTime;
struct Client me;             /* That's me */
struct LocalUser meLocalUser; /* That's also part of me */

static unsigned long initialVMTop = 0;   /* top of virtual memory at init */
const char *logFileName = LPATH;
const char *pidFileName = PPATH;

char **myargv;
char ircd_platform[PLATFORMLEN];

int dorehash = 0;
int doremotd = 0;
time_t nextconnect = 1;       /* time for next try_connections call */

/* Set to zero because it should be initialized later using
 * initialize_server_capabs
 */
int default_server_capabs = 0;

#ifdef HAVE_LIBCRYPTO
int bio_spare_fd = -1;
#endif

int splitmode;
int splitchecking;
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();
}
#endif

static int printVersion = 0;

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;
#ifdef _WIN32
  FILETIME ft;

  GetSystemTimeAsFileTime(&ft);
  if (ft.dwLowDateTime < 0xd53e8000)
    ft.dwHighDateTime--;
  ft.dwLowDateTime -= 0xd53e8000;
  ft.dwHighDateTime -= 0x19db1de;

  newtime.tv_sec  = (*(uint64_t *) &ft) / 10000000;
  newtime.tv_usec = (*(uint64_t *) &ft) / 10 % 1000000;
#else
  newtime.tv_sec  = 0;
  newtime.tv_usec = 0;

  if (gettimeofday(&newtime, NULL) == -1)
  {
    ilog(L_ERROR, "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");
  }
#endif

  if (newtime.tv_sec < CurrentTime)
  {
    ircsprintf(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;
  GlobalSetOptions.idletime = ConfigFileEntry.idletime;
  /* 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);

  if (ServerInfo.sid != NULL)   /* only enable TS6 if we have an SID */
    add_capability("TS6", CAP_TS6, 0);

  add_capability("ZIP", CAP_ZIP, 0);
  add_capability("CLUSTER", CAP_CLUSTER, 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)
{
  FBFILE *fb;

  if ((fb = fbopen(filename, "w")))
  {
    char buff[32];
    unsigned int pid = (unsigned int)getpid();
    size_t nbytes = ircsprintf(buff, "%u\n", pid);

    if ((fbputs(buff, fb, nbytes) == -1))
      ilog(L_ERROR, "Error writing %u to pid file %s (%s)",
           pid, filename, strerror(errno));

    fbclose(fb);
    return;
  }
  else
  {
    ilog(L_ERROR, "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)
{
#ifndef _WIN32
  FBFILE *fb;
  char buff[32];
  pid_t pidfromfile;

  /* Don't do logging here, since we don't have log() initialised */
  if ((fb = fbopen(filename, "r")))
  {
    if (fbgets(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);
      }
    }

    fbclose(fb);
  }
  else if (errno != ENOENT)
  {
    /* log(L_ERROR, "Error opening pid file %s", filename); */
  }
#endif
}

/* 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();

  ServerInfo.ctx = SSL_CTX_new(SSLv23_server_method());
  if (!ServerInfo.ctx)
  {
    const char *s;

    fprintf(stderr, "ERROR: Could not initialize the SSL context -- %s\n",
            s = ERR_lib_error_string(ERR_get_error()));
    ilog(L_CRIT, "ERROR: Could not initialize the SSL context -- %s\n", s);
  }

  SSL_CTX_set_options(ServerInfo.ctx, SSL_OP_NO_SSLv2);
  SSL_CTX_set_options(ServerInfo.ctx, SSL_OP_TLS_ROLLBACK_BUG|SSL_OP_ALL);
  SSL_CTX_set_verify(ServerInfo.ctx, SSL_VERIFY_NONE, NULL);

  bio_spare_fd = save_spare_fd("SSL private key validation");
#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);
  iorecvctrl_cb = register_callback("iorecvctrl", NULL);
  iosendctrl_cb = register_callback("iosendctrl", NULL);
}

int
main(int argc, char *argv[])
{
  /* Check to see if the user is running
   * us as root, which is a nono
   */
#ifndef _WIN32
  if (geteuid() == 0)
  {
    fprintf(stderr, "Don't run ircd as root!!!\n");
    return(-1);
  }

  /* Setup corefile size immediately after boot -kre */
  setup_corefile();
#endif

  /* 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 */
  srand(SystemTime.tv_sec ^ (SystemTime.tv_usec | (getpid() << 20)));
  memset(&me, 0, sizeof(me));
  memset(&meLocalUser, 0, sizeof(meLocalUser));
  me.localClient = &meLocalUser;
  dlinkAdd(&me, &me.node, &global_client_list); /* Pointer to beginning
                                                   of Client list */

  memset(&ServerInfo, 0, sizeof(ServerInfo));
  memset(&ServerStats, 0, sizeof(ServerStats));

  /* 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();

#ifndef _WIN32
  if (!server_state.foreground)
  {
    make_daemon();
    close_standard_fds(); /* this needs to be before init_netio()! */
  }
  else
    print_startup(getpid());

  setup_signals();
#endif

  get_ircd_platform(ircd_platform);

  /* Init the event subsystem */
  eventInit();
  /* We need this to initialise the fd array before anything else */
  fdlist_init();
  init_log(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);

#ifndef NOBALLOC
  initBlockHeap();
#endif
  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();
  read_conf_files(1);   /* cold start init conf files */
  me.id[0] = '\0';
  init_uid();
  init_auth();          /* Initialise the auth code */
#ifndef _WIN32
  init_resolver();      /* Needs to be setup before the io loop */
#endif
  initialize_server_capabs();   /* Set up default_server_capabs */
  initialize_global_set_options();
  init_channels();

  if (ServerInfo.name == NULL)
  {
    ilog(L_CRIT, "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 (ServerInfo.description == NULL)
  {
    ilog(L_CRIT,
      "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;

  SetMe(&me);
  make_server(&me);

  me.lasttime = me.since = me.firsttime = CurrentTime;
  hash_add_client(&me);
  
  /* add ourselves to global_serv_list */
  dlinkAdd(&me, make_dlink_node(), &global_serv_list);

  check_class();

#ifndef STATIC_MODULES
  if (chdir(MODPATH))
  {
    ilog (L_CRIT, "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 */
  chdir(ConfigFileEntry.dpath);
#else
  load_all_modules(1);
#endif
  /*
   * assemble_umode_buffer() has to be called after
   * reading conf/loading modules.
   */
  assemble_umode_buffer();

  write_pidfile(pidFileName);

  ilog(L_NOTICE, "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);

  eventAddIsh("collect_zipstats", collect_zipstats, NULL, ZIPSTATS_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:	948
Committed:	Tue Jul 21 17:34:06 2009 UTC (16 years, 1 month ago) by michael
Content type:	text/x-csrc
Original Path:	*ircd-hybrid-7.2/src/ircd.c*
File size:	18054 byte(s)
Log Message:	- lp64\llp64\ilp32 portability fixes
#	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			#include "tools.h"
28			#include "ircd.h"
29			#include "channel.h"
30			#include "channel_mode.h"
31			#include "client.h"
32			#include "common.h"
33			#include "event.h"
34			#include "fdlist.h"
35			#include "hash.h"
36			#include "irc_string.h"
37			#include "sprintf_irc.h"
38			#include "ircd_signal.h"
39			#include "list.h"
40			#include "s_gline.h"
41			#include "motd.h"
42			#include "ircd_handler.h"
43			#include "msg.h" /* msgtab */
44			#include "hostmask.h"
45			#include "numeric.h"
46			#include "packet.h"
47			#include "parse.h"
48			#include "irc_res.h"
49			#include "restart.h"
50			#include "s_auth.h"
51			#include "s_bsd.h"
52			#include "s_conf.h"
53			#include "s_log.h"
54			#include "s_misc.h"
55			#include "s_serv.h" /* try_connections */
56			#include "send.h"
57			#include "whowas.h"
58			#include "modules.h"
59			#include "memory.h"
60			#include "hook.h"
61			#include "ircd_getopt.h"
62			#include "balloc.h"
63			#include "motd.h"
64			#include "supported.h"
65	michael	876	#include "watch.h"
66	adx	30
67			/* Try and find the correct name to use with getrlimit() for setting the max.
68			* number of files allowed to be open by this process.
69			*/
70
71			/* /quote set variables */
72			struct SetOptions GlobalSetOptions;
73
74			/* configuration set from ircd.conf */
75			struct config_file_entry ConfigFileEntry;
76			/* server info set from ircd.conf */
77			struct server_info ServerInfo;
78			/* admin info set from ircd.conf */
79			struct admin_info AdminInfo = { NULL, NULL, NULL };
80			struct Counter Count = { 0, 0, 0, 0, 0, 0, 0, 0 };
81			struct ServerState_t server_state = { 0 };
82			struct logging_entry ConfigLoggingEntry = { 1, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0} };
83	michael	896	struct ServerStatistics ServerStats;
84	adx	30	struct timeval SystemTime;
85			struct Client me; /* That's me */
86			struct LocalUser meLocalUser; /* That's also part of me */
87
88			static unsigned long initialVMTop = 0; /* top of virtual memory at init */
89			const char *logFileName = LPATH;
90			const char *pidFileName = PPATH;
91
92			char **myargv;
93			char ircd_platform[PLATFORMLEN];
94
95			int dorehash = 0;
96			int doremotd = 0;
97			time_t nextconnect = 1; /* time for next try_connections call */
98
99			/* Set to zero because it should be initialized later using
100			* initialize_server_capabs
101			*/
102			int default_server_capabs = 0;
103
104			#ifdef HAVE_LIBCRYPTO
105			int bio_spare_fd = -1;
106			#endif
107
108			int splitmode;
109			int splitchecking;
110			int split_users;
111			unsigned int split_servers;
112
113			/* Do klines the same way hybrid-6 did them, i.e. at the
114			* top of the next io_loop instead of in the same loop as
115			* the klines are being applied.
116			*
117			* This should fix strange CPU starvation as very indirectly reported.
118			* (Why do you people not email bug reports? WHY? WHY?)
119			*
120			* - Dianora
121			*/
122
123			int rehashed_klines = 0;
124
125
126			/*
127			* print_startup - print startup information
128			*/
129			static void
130			print_startup(int pid)
131			{
132			printf("ircd: version %s\n", ircd_version);
133			printf("ircd: pid %d\n", pid);
134			printf("ircd: running in %s mode from %s\n", !server_state.foreground ? "background"
135			: "foreground", ConfigFileEntry.dpath);
136			}
137
138			static void
139			make_daemon(void)
140			{
141			int pid;
142
143			if ((pid = fork()) < 0)
144			{
145			perror("fork");
146			exit(EXIT_FAILURE);
147			}
148			else if (pid > 0)
149			{
150			print_startup(pid);
151			exit(EXIT_SUCCESS);
152			}
153
154			setsid();
155			}
156			#endif
157
158			static int printVersion = 0;
159
160			struct lgetopt myopts[] = {
161			{"dlinefile", &ConfigFileEntry.dlinefile,
162			STRING, "File to use for dline.conf"},
163			{"configfile", &ConfigFileEntry.configfile,
164			STRING, "File to use for ircd.conf"},
165			{"klinefile", &ConfigFileEntry.klinefile,
166			STRING, "File to use for kline.conf"},
167			{"xlinefile", &ConfigFileEntry.xlinefile,
168			STRING, "File to use for xline.conf"},
169			{"logfile", &logFileName,
170			STRING, "File to use for ircd.log"},
171			{"pidfile", &pidFileName,
172			STRING, "File to use for process ID"},
173			{"foreground", &server_state.foreground,
174			YESNO, "Run in foreground (don't detach)"},
175			{"version", &printVersion,
176			YESNO, "Print version and exit"},
177			{"help", NULL, USAGE, "Print this text"},
178			{NULL, NULL, STRING, NULL},
179			};
180
181			void
182			set_time(void)
183			{
184			static char to_send[200];
185			struct timeval newtime;
186			#ifdef _WIN32
187			FILETIME ft;
188
189			GetSystemTimeAsFileTime(&ft);
190			if (ft.dwLowDateTime < 0xd53e8000)
191			ft.dwHighDateTime--;
192			ft.dwLowDateTime -= 0xd53e8000;
193			ft.dwHighDateTime -= 0x19db1de;
194
195			newtime.tv_sec = ((uint64_t ) &ft) / 10000000;
196			newtime.tv_usec = ((uint64_t ) &ft) / 10 % 1000000;
197			#else
198			newtime.tv_sec = 0;
199			newtime.tv_usec = 0;
200
201			if (gettimeofday(&newtime, NULL) == -1)
202			{
203			ilog(L_ERROR, "Clock Failure (%s), TS can be corrupted",
204			strerror(errno));
205			sendto_realops_flags(UMODE_ALL, L_ALL,
206			"Clock Failure (%s), TS can be corrupted",
207			strerror(errno));
208			restart("Clock Failure");
209			}
210			#endif
211
212			if (newtime.tv_sec < CurrentTime)
213			{
214			ircsprintf(to_send, "System clock is running backwards - (%lu < %lu)",
215			(unsigned long)newtime.tv_sec, (unsigned long)CurrentTime);
216			report_error(L_ALL, to_send, me.name, 0);
217			set_back_events(CurrentTime - newtime.tv_sec);
218			}
219
220			SystemTime.tv_sec = newtime.tv_sec;
221			SystemTime.tv_usec = newtime.tv_usec;
222			}
223
224			static void
225			io_loop(void)
226			{
227			while (1 == 1)
228			{
229			/*
230			* Maybe we want a flags word?
231			* ie. if (REHASHED_KLINES(global_flags))
232			* SET_REHASHED_KLINES(global_flags)
233			* CLEAR_REHASHED_KLINES(global_flags)
234			*
235			* - Dianora
236			*/
237			if (rehashed_klines)
238			{
239			check_conf_klines();
240			rehashed_klines = 0;
241			}
242
243			if (listing_client_list.head)
244			{
245			dlink_node ptr = NULL, ptr_next = NULL;
246			DLINK_FOREACH_SAFE(ptr, ptr_next, listing_client_list.head)
247			{
248			struct Client *client_p = ptr->data;
249			assert(client_p->localClient->list_task);
250	michael	896	safe_list_channels(client_p, client_p->localClient->list_task, 0);
251	adx	30	}
252			}
253
254			/* Run pending events, then get the number of seconds to the next
255			* event
256			*/
257			while (eventNextTime() <= CurrentTime)
258			eventRun();
259
260			comm_select();
261			exit_aborted_clients();
262			free_exited_clients();
263			send_queued_all();
264
265			/* Check to see whether we have to rehash the configuration .. */
266			if (dorehash)
267			{
268			rehash(1);
269			dorehash = 0;
270			}
271			if (doremotd)
272			{
273			read_message_file(&ConfigFileEntry.motd);
274			sendto_realops_flags(UMODE_ALL, L_ALL,
275			"Got signal SIGUSR1, reloading ircd motd file");
276			doremotd = 0;
277			}
278			}
279			}
280
281			/* initalialize_global_set_options()
282			*
283			* inputs - none
284			* output - none
285			* side effects - This sets all global set options needed
286			*/
287			static void
288			initialize_global_set_options(void)
289			{
290			memset(&GlobalSetOptions, 0, sizeof(GlobalSetOptions));
291
292			GlobalSetOptions.autoconn = 1;
293			GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
294			GlobalSetOptions.spam_num = MAX_JOIN_LEAVE_COUNT;
295
296			if (ConfigFileEntry.default_floodcount)
297			GlobalSetOptions.floodcount = ConfigFileEntry.default_floodcount;
298			else
299			GlobalSetOptions.floodcount = 10;
300
301			/* XXX I have no idea what to try here - Dianora */
302			GlobalSetOptions.joinfloodcount = 16;
303			GlobalSetOptions.joinfloodtime = 8;
304
305			split_servers = ConfigChannel.default_split_server_count;
306			split_users = ConfigChannel.default_split_user_count;
307
308			if (split_users && split_servers && (ConfigChannel.no_create_on_split \|\|
309			ConfigChannel.no_join_on_split))
310			{
311			splitmode = 1;
312			splitchecking = 1;
313			}
314
315			GlobalSetOptions.ident_timeout = IDENT_TIMEOUT;
316			GlobalSetOptions.idletime = ConfigFileEntry.idletime;
317			/* End of global set options */
318			}
319
320			/* initialize_message_files()
321			*
322			* inputs - none
323			* output - none
324			* side effects - Set up all message files needed, motd etc.
325			*/
326			static void
327			initialize_message_files(void)
328			{
329			init_message_file(USER_MOTD, MPATH, &ConfigFileEntry.motd);
330			init_message_file(OPER_MOTD, OPATH, &ConfigFileEntry.opermotd);
331			init_message_file(USER_LINKS, LIPATH, &ConfigFileEntry.linksfile);
332
333			read_message_file(&ConfigFileEntry.motd);
334			read_message_file(&ConfigFileEntry.opermotd);
335			read_message_file(&ConfigFileEntry.linksfile);
336
337			init_isupport();
338			}
339
340			/* initialize_server_capabs()
341			*
342			* inputs - none
343			* output - none
344			*/
345			static void
346			initialize_server_capabs(void)
347			{
348			add_capability("QS", CAP_QS, 1);
349			add_capability("EOB", CAP_EOB, 1);
350	michael	885
351	adx	30	if (ServerInfo.sid != NULL) /* only enable TS6 if we have an SID */
352			add_capability("TS6", CAP_TS6, 0);
353	michael	885
354	adx	30	add_capability("ZIP", CAP_ZIP, 0);
355			add_capability("CLUSTER", CAP_CLUSTER, 1);
356			#ifdef HALFOPS
357			add_capability("HOPS", CAP_HOPS, 1);
358			#endif
359			}
360
361			/* write_pidfile()
362			*
363			* inputs - filename+path of pid file
364			* output - NONE
365			* side effects - write the pid of the ircd to filename
366			*/
367			static void
368			write_pidfile(const char *filename)
369			{
370			FBFILE *fb;
371
372			if ((fb = fbopen(filename, "w")))
373			{
374			char buff[32];
375			unsigned int pid = (unsigned int)getpid();
376			size_t nbytes = ircsprintf(buff, "%u\n", pid);
377
378			if ((fbputs(buff, fb, nbytes) == -1))
379			ilog(L_ERROR, "Error writing %u to pid file %s (%s)",
380			pid, filename, strerror(errno));
381
382			fbclose(fb);
383			return;
384			}
385			else
386			{
387			ilog(L_ERROR, "Error opening pid file %s", filename);
388			}
389			}
390
391			/* check_pidfile()
392			*
393			* inputs - filename+path of pid file
394			* output - none
395			* side effects - reads pid from pidfile and checks if ircd is in process
396			* list. if it is, gracefully exits
397			* -kre
398			*/
399			static void
400			check_pidfile(const char *filename)
401			{
402			#ifndef _WIN32
403			FBFILE *fb;
404			char buff[32];
405			pid_t pidfromfile;
406
407			/* Don't do logging here, since we don't have log() initialised */
408			if ((fb = fbopen(filename, "r")))
409			{
410			if (fbgets(buff, 20, fb) == NULL)
411			{
412			/* log(L_ERROR, "Error reading from pid file %s (%s)", filename,
413			* strerror(errno));
414			*/
415			}
416			else
417			{
418			pidfromfile = atoi(buff);
419
420			if (!kill(pidfromfile, 0))
421			{
422			/* log(L_ERROR, "Server is already running"); */
423			printf("ircd: daemon is already running\n");
424			exit(-1);
425			}
426			}
427
428			fbclose(fb);
429			}
430			else if (errno != ENOENT)
431			{
432			/* log(L_ERROR, "Error opening pid file %s", filename); */
433			}
434			#endif
435			}
436
437			/* setup_corefile()
438			*
439			* inputs - nothing
440			* output - nothing
441			* side effects - setups corefile to system limits.
442			* -kre
443			*/
444			static void
445			setup_corefile(void)
446			{
447			#ifdef HAVE_SYS_RESOURCE_H
448			struct rlimit rlim; /* resource limits */
449
450			/* Set corefilesize to maximum */
451			if (!getrlimit(RLIMIT_CORE, &rlim))
452			{
453			rlim.rlim_cur = rlim.rlim_max;
454			setrlimit(RLIMIT_CORE, &rlim);
455			}
456			#endif
457			}
458
459			/* init_ssl()
460			*
461			* inputs - nothing
462			* output - nothing
463			* side effects - setups SSL context.
464			*/
465			static void
466			init_ssl(void)
467			{
468			#ifdef HAVE_LIBCRYPTO
469			SSL_load_error_strings();
470			SSLeay_add_ssl_algorithms();
471
472			ServerInfo.ctx = SSL_CTX_new(SSLv23_server_method());
473			if (!ServerInfo.ctx)
474			{
475			const char *s;
476
477			fprintf(stderr, "ERROR: Could not initialize the SSL context -- %s\n",
478			s = ERR_lib_error_string(ERR_get_error()));
479			ilog(L_CRIT, "ERROR: Could not initialize the SSL context -- %s\n", s);
480			}
481
482			SSL_CTX_set_options(ServerInfo.ctx, SSL_OP_NO_SSLv2);
483			SSL_CTX_set_options(ServerInfo.ctx, SSL_OP_TLS_ROLLBACK_BUG\|SSL_OP_ALL);
484			SSL_CTX_set_verify(ServerInfo.ctx, SSL_VERIFY_NONE, NULL);
485
486			bio_spare_fd = save_spare_fd("SSL private key validation");
487			#endif /* HAVE_LIBCRYPTO */
488			}
489
490			/* init_callbacks()
491			*
492			* inputs - nothing
493			* output - nothing
494			* side effects - setups standard hook points
495			*/
496			static void
497			init_callbacks(void)
498			{
499	adx	163	iorecv_cb = register_callback("iorecv", iorecv_default);
500			iosend_cb = register_callback("iosend", iosend_default);
501	adx	30	iorecvctrl_cb = register_callback("iorecvctrl", NULL);
502			iosendctrl_cb = register_callback("iosendctrl", NULL);
503			}
504
505			int
506			main(int argc, char *argv[])
507			{
508			/* Check to see if the user is running
509			* us as root, which is a nono
510			*/
511			#ifndef _WIN32
512			if (geteuid() == 0)
513			{
514			fprintf(stderr, "Don't run ircd as root!!!\n");
515			return(-1);
516			}
517
518			/* Setup corefile size immediately after boot -kre */
519			setup_corefile();
520			#endif
521
522			/* save server boot time right away, so getrusage works correctly */
523			set_time();
524
525			/* It ain't random, but it ought to be a little harder to guess */
526			srand(SystemTime.tv_sec ^ (SystemTime.tv_usec \| (getpid() << 20)));
527			memset(&me, 0, sizeof(me));
528			memset(&meLocalUser, 0, sizeof(meLocalUser));
529			me.localClient = &meLocalUser;
530			dlinkAdd(&me, &me.node, &global_client_list); /* Pointer to beginning
531			of Client list */
532
533			memset(&ServerInfo, 0, sizeof(ServerInfo));
534	michael	896	memset(&ServerStats, 0, sizeof(ServerStats));
535	adx	30
536			/* Initialise the channel capability usage counts... */
537			init_chcap_usage_counts();
538
539			ConfigFileEntry.dpath = DPATH;
540			ConfigFileEntry.configfile = CPATH; /* Server configuration file */
541			ConfigFileEntry.klinefile = KPATH; /* Server kline file */
542			ConfigFileEntry.xlinefile = XPATH; /* Server xline file */
543			ConfigFileEntry.rxlinefile = RXPATH; /* Server regex xline file */
544			ConfigFileEntry.rklinefile = RKPATH; /* Server regex kline file */
545			ConfigFileEntry.dlinefile = DLPATH; /* dline file */
546			ConfigFileEntry.glinefile = GPATH; /* gline log file */
547			ConfigFileEntry.cresvfile = CRESVPATH; /* channel resv file */
548			ConfigFileEntry.nresvfile = NRESVPATH; /* nick resv file */
549			myargv = argv;
550			umask(077); /* better safe than sorry --SRB */
551
552			parseargs(&argc, &argv, myopts);
553
554			if (printVersion)
555			{
556			printf("ircd: version %s\n", ircd_version);
557			exit(EXIT_SUCCESS);
558			}
559
560			if (chdir(ConfigFileEntry.dpath))
561			{
562			perror("chdir");
563			exit(EXIT_FAILURE);
564			}
565
566			init_ssl();
567
568			#ifndef _WIN32
569			if (!server_state.foreground)
570			{
571			make_daemon();
572			close_standard_fds(); /* this needs to be before init_netio()! */
573			}
574			else
575			print_startup(getpid());
576
577			setup_signals();
578			#endif
579
580			get_ircd_platform(ircd_platform);
581
582			/* Init the event subsystem */
583			eventInit();
584			/* We need this to initialise the fd array before anything else */
585			fdlist_init();
586			init_log(logFileName);
587			check_can_use_v6();
588			init_comm(); /* This needs to be setup early ! -- adrian */
589			/* Check if there is pidfile and daemon already running */
590			check_pidfile(pidFileName);
591
592			#ifndef NOBALLOC
593			initBlockHeap();
594			#endif
595			init_dlink_nodes();
596			init_callbacks();
597			initialize_message_files();
598			dbuf_init();
599			init_hash();
600			init_ip_hash_table(); /* client host ip hash table */
601			init_host_hash(); /* Host-hashtable. */
602			clear_tree_parse();
603			init_client();
604			init_class();
605			init_whowas();
606	michael	876	watch_init();
607	adx	30	read_conf_files(1); /* cold start init conf files */
608			me.id[0] = '\0';
609			init_uid();
610			init_auth(); /* Initialise the auth code */
611			#ifndef _WIN32
612			init_resolver(); /* Needs to be setup before the io loop */
613			#endif
614			initialize_server_capabs(); /* Set up default_server_capabs */
615			initialize_global_set_options();
616			init_channels();
617
618			if (ServerInfo.name == NULL)
619			{
620			ilog(L_CRIT, "No server name specified in serverinfo block.");
621			exit(EXIT_FAILURE);
622			}
623	michael	885
624	adx	30	strlcpy(me.name, ServerInfo.name, sizeof(me.name));
625
626			/* serverinfo{} description must exist. If not, error out.*/
627			if (ServerInfo.description == NULL)
628			{
629			ilog(L_CRIT,
630			"ERROR: No server description specified in serverinfo block.");
631			exit(EXIT_FAILURE);
632			}
633	michael	885
634	adx	30	strlcpy(me.info, ServerInfo.description, sizeof(me.info));
635
636			me.from = &me;
637			me.servptr = &me;
638
639			SetMe(&me);
640			make_server(&me);
641
642			me.lasttime = me.since = me.firsttime = CurrentTime;
643			hash_add_client(&me);
644
645			/* add ourselves to global_serv_list */
646			dlinkAdd(&me, make_dlink_node(), &global_serv_list);
647
648			check_class();
649
650			#ifndef STATIC_MODULES
651			if (chdir(MODPATH))
652			{
653			ilog (L_CRIT, "Could not load core modules. Terminating!");
654			exit(EXIT_FAILURE);
655			}
656
657			load_all_modules(1);
658			load_conf_modules();
659			load_core_modules(1);
660			/* Go back to DPATH after checking to see if we can chdir to MODPATH */
661			chdir(ConfigFileEntry.dpath);
662			#else
663			load_all_modules(1);
664			#endif
665			/*
666			* assemble_umode_buffer() has to be called after
667			* reading conf/loading modules.
668			*/
669			assemble_umode_buffer();
670
671			write_pidfile(pidFileName);
672
673			ilog(L_NOTICE, "Server Ready");
674
675			eventAddIsh("cleanup_glines", cleanup_glines, NULL, CLEANUP_GLINES_TIME);
676			eventAddIsh("cleanup_tklines", cleanup_tklines, NULL, CLEANUP_TKLINES_TIME);
677
678			/* We want try_connections to be called as soon as possible now! -- adrian */
679			/* No, 'cause after a restart it would cause all sorts of nick collides */
680			eventAddIsh("try_connections", try_connections, NULL, STARTUP_CONNECTIONS_TIME);
681
682			eventAddIsh("collect_zipstats", collect_zipstats, NULL, ZIPSTATS_TIME);
683
684			/* Setup the timeout check. I'll shift it later :) -- adrian */
685			eventAddIsh("comm_checktimeouts", comm_checktimeouts, NULL, 1);
686
687			if (ConfigServerHide.links_delay > 0)
688			eventAddIsh("write_links_file", write_links_file, NULL, ConfigServerHide.links_delay);
689			else
690			ConfigServerHide.links_disabled = 1;
691
692			if (splitmode)
693			eventAddIsh("check_splitmode", check_splitmode, NULL, 60);
694
695			io_loop();
696	michael	885	return 0;
697	adx	30	}