ircd-hybrid-newconf/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
 *
 *  $Id$
 */

#ifdef IN_IRCD
#include "stdinc.h"
#include "conf/conf.h"
#include "user.h"
#include "ircd.h"
#include "channel.h"
#include "channel_mode.h"
#include "client.h"
#include "common.h"
#include "hash.h"
#include "ircd_signal.h"
#include "motd.h"
#include "ircd_handler.h"
#include "msg.h"         /* msgtab */
#include "numeric.h"
#include "packet.h"
#include "parse.h"
#include "restart.h"
#include "s_auth.h"
#include "parse_aline.h"
#include "server.h"
#include "send.h"
#include "whowas.h"
#include "motd.h"
#include "watch.h"
#include "patchlevel.h"
#include "serno.h"


/* /quote set variables */
struct SetOptions GlobalSetOptions;
struct ServerStatistics ServerStats;
/* admin info set from ircd.conf */
struct Counter Count = { 0, 0, 0, 0, 0, 0, 0, 0 };
struct ServerState_t ServerState = { 0 };
struct Client me;             /* That's me */
struct LocalUser meLocalUser; /* That's also part of me */

char **myargv;
const char *ircd_version = PATCHLEVEL;
const char *serno = SERIALNUM;
char ircd_platform[IRCD_BUFSIZE];

int dorehash = 0;
int doremotd = 0;

/* 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;

static dlink_node *fdlimit_hook;

/* 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;

#ifndef _WIN32
/*
 * 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",
         ServerState.foreground ? "foreground" : "background", 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 struct lgetopt myopts[] = {
  {"configfile", &ServerState.configfile,
   STRING, "File to use for ircd.conf"},
  {"klinefile",  &ServerState.klinefile,
   STRING, "File to use for kline.conf"},
  {"rklinefile", &ServerState.rklinefile,
   STRING, "File to use for rkline.conf"},
  {"dlinefile",  &ServerState.dlinefile,
   STRING, "File to use for dline.conf"},
  {"glinefile",  &ServerState.glinefile,
   STRING, "File to use for gline.conf"},
  {"xlinefile",  &ServerState.xlinefile,
   STRING, "File to use for xline.conf"},
  {"rxlinefile", &ServerState.rxlinefile,
   STRING, "File to use for rxline.conf"},
  {"cresvfile",  &ServerState.cresvfile,
   STRING, "File to use for cresv.conf"},
  {"nresvfile",  &ServerState.nresvfile,
   STRING, "File to use for nresv.conf"},
  {"logfile",    &ServerState.logfile,
   STRING, "File to use for ircd.log"},
  {"pidfile",    &ServerState.pidfile,
   STRING, "File to use for process ID"},
  {"foreground", &ServerState.foreground,
   YESNO, "Run in foreground (don't detach)"},
  {"version",    &ServerState.printversion,
   YESNO, "Print version and exit"},
  {"help", NULL, USAGE, "Print this text"},
  {NULL, NULL, STRING, NULL},
};

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)
    {
      sendto_realops_flags(UMODE_ALL, L_ALL,
        "Got signal SIGHUP, reloading ircd configuration");
      read_conf_files(NO);
      dorehash = 0;
    }

    if (doremotd)
    {
      read_message_file(&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 
 * XXX to be removed with old s_conf.c
 */
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 (General.default_floodcount)
    GlobalSetOptions.floodcount = General.default_floodcount;
  else
    GlobalSetOptions.floodcount = 10;

  // XXX I have no idea what to try here - Dianora
  GlobalSetOptions.joinfloodcount = 16;
  GlobalSetOptions.joinfloodtime = 8;

  GlobalSetOptions.split_servers = Channel.default_split_server_count;
  GlobalSetOptions.split_users   = Channel.default_split_user_count;

  if (GlobalSetOptions.split_users && GlobalSetOptions.split_servers &&
      (Channel.no_create_on_split || Channel.no_join_on_split))
  {
    splitmode     = 1;
    splitchecking = 1;
  }

  GlobalSetOptions.ident_timeout = IDENT_TIMEOUT;
  GlobalSetOptions.idletime = General.idletime;
  GlobalSetOptions.maxlisters = 10; /* XXX ya ya ya - db */
}

/* 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);
  }
  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
}

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

  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)
{
  entering_umode_cb = register_callback("entering_umode", NULL);
  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);
  authorize_client = register_callback("authorize_client", do_authorize_client);
  uid_get = register_callback("uid_get", do_uid_get);
  umode_cb = register_callback("changing_umode", change_simple_umode);
}

static void *
changing_fdlimit(va_list args)
{
  int old_fdlimit = hard_fdlimit;
  int fdmax = va_arg(args, int);

  /*
   * allow MAXCLIENTS_MIN clients even at the cost of MAX_BUFFER and
   * some not really LEAKED_FDS
   */
  fdmax = LIBIO_MAX(fdmax, LEAKED_FDS + MAX_BUFFER + MAXCLIENTS_MIN);

  pass_callback(fdlimit_hook, fdmax);

  if (ServerInfo.max_clients > MAXCLIENTS_MAX)
  {
    if (old_fdlimit != 0)
      sendto_realops_flags(UMODE_ALL, L_ALL,
        "HARD_FDLIMIT changed to %d, adjusting MAXCLIENTS to %d",
        hard_fdlimit, MAXCLIENTS_MAX);

    ServerInfo.max_clients = MAXCLIENTS_MAX;
  }

  return NULL;
}

EXTERN 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

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

  ServerState.configfile = CPATH;  // Server configuration file
  ServerState.klinefile  = KPATH;  // Server kline file
  ServerState.rklinefile = RKPATH; // Server regex kline file
  ServerState.dlinefile  = DLPATH; // dline file
  ServerState.glinefile  = GPATH;  // gline log file
  ServerState.xlinefile  = XPATH;  // Server xline file
  ServerState.rxlinefile = RXPATH; // Server regex xline file
  ServerState.cresvfile  = CRESVPATH; // channel resv file
  ServerState.nresvfile  = NRESVPATH; // nick resv file
  ServerState.logfile    = LPATH;
  ServerState.pidfile    = PPATH;
  myargv = argv;
  umask(077);                // better safe than sorry --SRB

  parseargs(&argc, &argv, myopts);

  if (ServerState.printversion)
  {
    printf("ircd: version %s\n", ircd_version);
    exit(EXIT_SUCCESS);
  }

  if (chdir(DPATH))
  {
    perror("chdir");
    exit(EXIT_FAILURE);
  }

  ssl_init();

#ifndef _WIN32
  if (!ServerState.foreground)
    make_daemon();
  else
    print_startup(getpid());
#endif

  libio_init(!ServerState.foreground);
  init_restart();
  fdlimit_hook = install_hook(fdlimit_cb, changing_fdlimit);

  check_pidfile(ServerState.pidfile);
  setup_signals();
  libio_get_platform(ircd_platform, sizeof(ircd_platform));
  init_log(ServerState.logfile);
  ServerState.can_use_v6 = check_can_use_v6();

  memset(&me, 0, sizeof(me));
  memset(&meLocalUser, 0, sizeof(meLocalUser));
  me.localClient = &meLocalUser;
  me.from = me.servptr = &me;
  me.lasttime = me.since = me.firsttime = CurrentTime;
  SetMe(&me);
  make_server(&me);
  dlinkAdd(&me, &me.node, &global_client_list);
  dlinkAdd(&me, make_dlink_node(), &global_serv_list);

  init_callbacks();
  init_motd();
  init_isupport();
  hash_init();
  clear_tree_parse();
  init_client();
  whowas_init();
  watch_init();
  init_auth();
  channel_init();
  init_channel_modes();
  server_init();
  init_conf();
  modules_init();
  read_conf_files(YES); // cold start init conf files
  init_uid();
  initialize_global_set_options();

  /*
   * assemble_umode_buffer() has to be called after
   * reading conf/loading modules.
   */
  assemble_umode_buffer();

  write_pidfile(ServerState.pidfile);

  ilog(L_NOTICE, "Server Ready");

  // 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);

  io_loop();
  return 0;
}

#else

#include <windows.h>

extern __declspec(dllimport) main(int, char **);

/*
 * Initial entry point for Win32 GUI applications, called by the C runtime.
 *
 * It should be only a wrapper for main(), since when compiled as a console
 * application, main() is called instead.
 */
int WINAPI
WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
        LPSTR lpCmdLine, int nCmdShow)
{
  /* Do we really need these pidfile, logfile etc arguments?
   * And we are not on a console, so -help or -foreground is meaningless. */

  char *argv[2] = {"ircd", NULL};

  return main(1, argv);
}

#endif
Revision:	1027
Committed:	Sun Nov 8 13:01:13 2009 UTC (16 years, 9 months ago) by michael
Content type:	text/x-csrc
File size:	14254 byte(s)
Log Message:	- Move old 7.3 sources to branches/ircd-hybrid-newconf
#	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	adx	185	#ifdef IN_IRCD
26	adx	30	#include "stdinc.h"
27	adx	743	#include "conf/conf.h"
28	adx	801	#include "user.h"
29	adx	30	#include "ircd.h"
30			#include "channel.h"
31			#include "channel_mode.h"
32			#include "client.h"
33			#include "common.h"
34			#include "hash.h"
35			#include "ircd_signal.h"
36			#include "motd.h"
37			#include "ircd_handler.h"
38			#include "msg.h" /* msgtab */
39			#include "numeric.h"
40			#include "packet.h"
41			#include "parse.h"
42			#include "restart.h"
43			#include "s_auth.h"
44	db	91	#include "parse_aline.h"
45	adx	801	#include "server.h"
46	adx	30	#include "send.h"
47			#include "whowas.h"
48			#include "motd.h"
49	michael	217	#include "watch.h"
50	michael	684	#include "patchlevel.h"
51			#include "serno.h"
52	adx	30
53
54			/* /quote set variables */
55			struct SetOptions GlobalSetOptions;
56	michael	515	struct ServerStatistics ServerStats;
57	adx	30	/* admin info set from ircd.conf */
58			struct Counter Count = { 0, 0, 0, 0, 0, 0, 0, 0 };
59	adx	743	struct ServerState_t ServerState = { 0 };
60	adx	30	struct Client me; /* That's me */
61			struct LocalUser meLocalUser; /* That's also part of me */
62
63			char **myargv;
64	michael	684	const char *ircd_version = PATCHLEVEL;
65			const char *serno = SERIALNUM;
66			char ircd_platform[IRCD_BUFSIZE];
67	adx	30
68			int dorehash = 0;
69			int doremotd = 0;
70
71			/* Set to zero because it should be initialized later using
72			* initialize_server_capabs
73			*/
74			int default_server_capabs = 0;
75
76			#ifdef HAVE_LIBCRYPTO
77			int bio_spare_fd = -1;
78			#endif
79
80			int splitmode;
81			int splitchecking;
82
83	adx	68	static dlink_node *fdlimit_hook;
84
85	adx	30	/* Do klines the same way hybrid-6 did them, i.e. at the
86			* top of the next io_loop instead of in the same loop as
87			* the klines are being applied.
88			*
89			* This should fix strange CPU starvation as very indirectly reported.
90			* (Why do you people not email bug reports? WHY? WHY?)
91			*
92			* - Dianora
93			*/
94
95			int rehashed_klines = 0;
96
97			#ifndef _WIN32
98			/*
99			* print_startup - print startup information
100			*/
101			static void
102			print_startup(int pid)
103			{
104			printf("ircd: version %s\n", ircd_version);
105			printf("ircd: pid %d\n", pid);
106	adx	743	printf("ircd: running in %s mode from %s\n",
107			ServerState.foreground ? "foreground" : "background", DPATH);
108	adx	30	}
109
110			static void
111			make_daemon(void)
112			{
113			int pid;
114
115			if ((pid = fork()) < 0)
116			{
117			perror("fork");
118			exit(EXIT_FAILURE);
119			}
120			else if (pid > 0)
121			{
122			print_startup(pid);
123			exit(EXIT_SUCCESS);
124			}
125
126			setsid();
127			}
128			#endif
129
130	michael	695	static struct lgetopt myopts[] = {
131	adx	743	{"configfile", &ServerState.configfile,
132	adx	30	STRING, "File to use for ircd.conf"},
133	adx	743	{"klinefile", &ServerState.klinefile,
134	adx	30	STRING, "File to use for kline.conf"},
135	adx	743	{"rklinefile", &ServerState.rklinefile,
136			STRING, "File to use for rkline.conf"},
137			{"dlinefile", &ServerState.dlinefile,
138			STRING, "File to use for dline.conf"},
139			{"glinefile", &ServerState.glinefile,
140			STRING, "File to use for gline.conf"},
141			{"xlinefile", &ServerState.xlinefile,
142	adx	30	STRING, "File to use for xline.conf"},
143	adx	743	{"rxlinefile", &ServerState.rxlinefile,
144			STRING, "File to use for rxline.conf"},
145			{"cresvfile", &ServerState.cresvfile,
146			STRING, "File to use for cresv.conf"},
147			{"nresvfile", &ServerState.nresvfile,
148			STRING, "File to use for nresv.conf"},
149			{"logfile", &ServerState.logfile,
150	adx	30	STRING, "File to use for ircd.log"},
151	adx	743	{"pidfile", &ServerState.pidfile,
152	adx	30	STRING, "File to use for process ID"},
153	adx	743	{"foreground", &ServerState.foreground,
154	adx	30	YESNO, "Run in foreground (don't detach)"},
155	adx	743	{"version", &ServerState.printversion,
156	adx	30	YESNO, "Print version and exit"},
157			{"help", NULL, USAGE, "Print this text"},
158			{NULL, NULL, STRING, NULL},
159			};
160
161			static void
162			io_loop(void)
163			{
164			while (1 == 1)
165			{
166			/*
167			* Maybe we want a flags word?
168			* ie. if (REHASHED_KLINES(global_flags))
169			* SET_REHASHED_KLINES(global_flags)
170			* CLEAR_REHASHED_KLINES(global_flags)
171			*
172			* - Dianora
173			*/
174			if (rehashed_klines)
175			{
176			check_conf_klines();
177			rehashed_klines = 0;
178			}
179
180			if (listing_client_list.head)
181			{
182			dlink_node ptr = NULL, ptr_next = NULL;
183			DLINK_FOREACH_SAFE(ptr, ptr_next, listing_client_list.head)
184			{
185			struct Client *client_p = ptr->data;
186			assert(client_p->localClient->list_task);
187	michael	398	safe_list_channels(client_p, client_p->localClient->list_task, 0);
188	adx	30	}
189			}
190
191			/* Run pending events, then get the number of seconds to the next
192			* event
193			*/
194			while (eventNextTime() <= CurrentTime)
195			eventRun();
196
197			comm_select();
198			exit_aborted_clients();
199			free_exited_clients();
200			send_queued_all();
201
202	adx	743	// Check to see whether we have to rehash the configuration ..
203	adx	30	if (dorehash)
204			{
205	adx	743	sendto_realops_flags(UMODE_ALL, L_ALL,
206			"Got signal SIGHUP, reloading ircd configuration");
207			read_conf_files(NO);
208	adx	30	dorehash = 0;
209			}
210	michael	450
211	adx	30	if (doremotd)
212			{
213	adx	743	read_message_file(&motd);
214	adx	30	sendto_realops_flags(UMODE_ALL, L_ALL,
215	adx	743	"Got signal SIGUSR1, reloading ircd MOTD file");
216	adx	30	doremotd = 0;
217			}
218			}
219			}
220
221			/* initalialize_global_set_options()
222			*
223			* inputs - none
224			* output - none
225			* side effects - This sets all global set options needed
226	adx	205	* XXX to be removed with old s_conf.c
227	adx	30	*/
228			static void
229			initialize_global_set_options(void)
230			{
231			memset(&GlobalSetOptions, 0, sizeof(GlobalSetOptions));
232
233			GlobalSetOptions.autoconn = 1;
234			GlobalSetOptions.spam_time = MIN_JOIN_LEAVE_TIME;
235			GlobalSetOptions.spam_num = MAX_JOIN_LEAVE_COUNT;
236
237	adx	743	if (General.default_floodcount)
238			GlobalSetOptions.floodcount = General.default_floodcount;
239	adx	30	else
240			GlobalSetOptions.floodcount = 10;
241
242	adx	743	// XXX I have no idea what to try here - Dianora
243	adx	30	GlobalSetOptions.joinfloodcount = 16;
244			GlobalSetOptions.joinfloodtime = 8;
245
246	adx	743	GlobalSetOptions.split_servers = Channel.default_split_server_count;
247			GlobalSetOptions.split_users = Channel.default_split_user_count;
248	adx	30
249	adx	743	if (GlobalSetOptions.split_users && GlobalSetOptions.split_servers &&
250			(Channel.no_create_on_split \|\| Channel.no_join_on_split))
251	adx	30	{
252			splitmode = 1;
253			splitchecking = 1;
254			}
255
256			GlobalSetOptions.ident_timeout = IDENT_TIMEOUT;
257	adx	743	GlobalSetOptions.idletime = General.idletime;
258	db	278	GlobalSetOptions.maxlisters = 10; /* XXX ya ya ya - db */
259	adx	30	}
260
261			/* write_pidfile()
262			*
263			* inputs - filename+path of pid file
264			* output - NONE
265			* side effects - write the pid of the ircd to filename
266			*/
267			static void
268			write_pidfile(const char *filename)
269			{
270			FBFILE *fb;
271
272			if ((fb = fbopen(filename, "w")))
273			{
274			char buff[32];
275			unsigned int pid = (unsigned int)getpid();
276			size_t nbytes = ircsprintf(buff, "%u\n", pid);
277
278			if ((fbputs(buff, fb, nbytes) == -1))
279			ilog(L_ERROR, "Error writing %u to pid file %s (%s)",
280			pid, filename, strerror(errno));
281
282			fbclose(fb);
283			}
284			else
285			{
286			ilog(L_ERROR, "Error opening pid file %s", filename);
287			}
288			}
289
290			/* check_pidfile()
291			*
292			* inputs - filename+path of pid file
293			* output - none
294			* side effects - reads pid from pidfile and checks if ircd is in process
295			* list. if it is, gracefully exits
296			* -kre
297			*/
298			static void
299			check_pidfile(const char *filename)
300			{
301			#ifndef _WIN32
302			FBFILE *fb;
303			char buff[32];
304			pid_t pidfromfile;
305
306	adx	743	// Don't do logging here, since we don't have log() initialised
307	adx	30	if ((fb = fbopen(filename, "r")))
308			{
309			if (fbgets(buff, 20, fb) == NULL)
310			{
311			/* log(L_ERROR, "Error reading from pid file %s (%s)", filename,
312			* strerror(errno));
313			*/
314			}
315			else
316			{
317			pidfromfile = atoi(buff);
318
319			if (!kill(pidfromfile, 0))
320			{
321	adx	743	// log(L_ERROR, "Server is already running");
322	adx	30	printf("ircd: daemon is already running\n");
323			exit(-1);
324			}
325			}
326
327			fbclose(fb);
328			}
329			else if (errno != ENOENT)
330			{
331	adx	743	// log(L_ERROR, "Error opening pid file %s", filename);
332	adx	30	}
333			#endif
334			}
335
336			/* init_ssl()
337			*
338			* inputs - nothing
339			* output - nothing
340			* side effects - setups SSL context.
341			*/
342			static void
343	michael	702	ssl_init(void)
344	adx	30	{
345			#ifdef HAVE_LIBCRYPTO
346	michael	452	SSL_library_init();
347	adx	30	SSL_load_error_strings();
348
349			ServerInfo.ctx = SSL_CTX_new(SSLv23_server_method());
350	michael	450
351	adx	30	if (!ServerInfo.ctx)
352			{
353			const char *s;
354
355			fprintf(stderr, "ERROR: Could not initialize the SSL context -- %s\n",
356			s = ERR_lib_error_string(ERR_get_error()));
357			ilog(L_CRIT, "ERROR: Could not initialize the SSL context -- %s\n", s);
358			}
359
360			SSL_CTX_set_options(ServerInfo.ctx, SSL_OP_NO_SSLv2);
361			SSL_CTX_set_options(ServerInfo.ctx, SSL_OP_TLS_ROLLBACK_BUG\|SSL_OP_ALL);
362			SSL_CTX_set_verify(ServerInfo.ctx, SSL_VERIFY_NONE, NULL);
363
364			bio_spare_fd = save_spare_fd("SSL private key validation");
365			#endif /* HAVE_LIBCRYPTO */
366			}
367
368			/* init_callbacks()
369			*
370			* inputs - nothing
371			* output - nothing
372			* side effects - setups standard hook points
373			*/
374			static void
375			init_callbacks(void)
376			{
377	adx	211	entering_umode_cb = register_callback("entering_umode", NULL);
378	adx	178	iorecv_cb = register_callback("iorecv", iorecv_default);
379			iosend_cb = register_callback("iosend", iosend_default);
380	adx	30	iorecvctrl_cb = register_callback("iorecvctrl", NULL);
381			iosendctrl_cb = register_callback("iosendctrl", NULL);
382	adx	743	authorize_client = register_callback("authorize_client", do_authorize_client);
383			uid_get = register_callback("uid_get", do_uid_get);
384	adx	211	umode_cb = register_callback("changing_umode", change_simple_umode);
385	adx	30	}
386
387	adx	68	static void *
388			changing_fdlimit(va_list args)
389			{
390			int old_fdlimit = hard_fdlimit;
391			int fdmax = va_arg(args, int);
392
393	michael	649	/*
394			* allow MAXCLIENTS_MIN clients even at the cost of MAX_BUFFER and
395			* some not really LEAKED_FDS
396			*/
397			fdmax = LIBIO_MAX(fdmax, LEAKED_FDS + MAX_BUFFER + MAXCLIENTS_MIN);
398	adx	68
399			pass_callback(fdlimit_hook, fdmax);
400
401			if (ServerInfo.max_clients > MAXCLIENTS_MAX)
402			{
403			if (old_fdlimit != 0)
404			sendto_realops_flags(UMODE_ALL, L_ALL,
405			"HARD_FDLIMIT changed to %d, adjusting MAXCLIENTS to %d",
406			hard_fdlimit, MAXCLIENTS_MAX);
407
408			ServerInfo.max_clients = MAXCLIENTS_MAX;
409			}
410
411			return NULL;
412			}
413
414	adx	185	EXTERN int
415	adx	30	main(int argc, char *argv[])
416			{
417	michael	515	/*
418			* Check to see if the user is running us as root, which is a nono
419	adx	30	*/
420			#ifndef _WIN32
421			if (geteuid() == 0)
422			{
423			fprintf(stderr, "Don't run ircd as root!!!\n");
424	adx	62	return 1;
425	adx	30	}
426
427	adx	743	// Setup corefile size immediately after boot -kre
428	adx	30	setup_corefile();
429			#endif
430
431			memset(&ServerInfo, 0, sizeof(ServerInfo));
432	michael	515	memset(&ServerStats, 0, sizeof(ServerStats));
433	adx	30
434	adx	743	ServerState.configfile = CPATH; // Server configuration file
435			ServerState.klinefile = KPATH; // Server kline file
436			ServerState.rklinefile = RKPATH; // Server regex kline file
437			ServerState.dlinefile = DLPATH; // dline file
438			ServerState.glinefile = GPATH; // gline log file
439	adx	771	ServerState.xlinefile = XPATH; // Server xline file
440			ServerState.rxlinefile = RXPATH; // Server regex xline file
441	adx	743	ServerState.cresvfile = CRESVPATH; // channel resv file
442			ServerState.nresvfile = NRESVPATH; // nick resv file
443	adx	771	ServerState.logfile = LPATH;
444			ServerState.pidfile = PPATH;
445	adx	30	myargv = argv;
446	adx	743	umask(077); // better safe than sorry --SRB
447	adx	30
448			parseargs(&argc, &argv, myopts);
449
450	adx	743	if (ServerState.printversion)
451	adx	30	{
452			printf("ircd: version %s\n", ircd_version);
453			exit(EXIT_SUCCESS);
454			}
455
456	adx	743	if (chdir(DPATH))
457	adx	30	{
458			perror("chdir");
459			exit(EXIT_FAILURE);
460			}
461
462	michael	702	ssl_init();
463	adx	30
464			#ifndef _WIN32
465	adx	743	if (!ServerState.foreground)
466	adx	30	make_daemon();
467			else
468			print_startup(getpid());
469	adx	77	#endif
470	adx	30
471	adx	743	libio_init(!ServerState.foreground);
472	adx	772	init_restart();
473	adx	229	fdlimit_hook = install_hook(fdlimit_cb, changing_fdlimit);
474
475	adx	743	check_pidfile(ServerState.pidfile);
476	adx	229	setup_signals();
477	michael	684	libio_get_platform(ircd_platform, sizeof(ircd_platform));
478	adx	743	init_log(ServerState.logfile);
479			ServerState.can_use_v6 = check_can_use_v6();
480	adx	229
481	db	228	memset(&me, 0, sizeof(me));
482			memset(&meLocalUser, 0, sizeof(meLocalUser));
483			me.localClient = &meLocalUser;
484			me.from = me.servptr = &me;
485			me.lasttime = me.since = me.firsttime = CurrentTime;
486			SetMe(&me);
487			make_server(&me);
488			dlinkAdd(&me, &me.node, &global_client_list);
489			dlinkAdd(&me, make_dlink_node(), &global_serv_list);
490
491	adx	30	init_callbacks();
492	adx	743	init_motd();
493			init_isupport();
494	michael	702	hash_init();
495	adx	30	clear_tree_parse();
496			init_client();
497	michael	655	whowas_init();
498			watch_init();
499	michael	702	init_auth();
500	michael	695	channel_init();
501	adx	48	init_channel_modes();
502	michael	702	server_init();
503	adx	743	init_conf();
504	stu	828	modules_init();
505	adx	743	read_conf_files(YES); // cold start init conf files
506			init_uid();
507			initialize_global_set_options();
508	michael	257
509	adx	30	/*
510			* assemble_umode_buffer() has to be called after
511			* reading conf/loading modules.
512			*/
513			assemble_umode_buffer();
514
515	adx	743	write_pidfile(ServerState.pidfile);
516	adx	30
517			ilog(L_NOTICE, "Server Ready");
518
519	adx	743	// We want try_connections to be called as soon as possible now! -- adrian
520			// No, 'cause after a restart it would cause all sorts of nick collides
521	adx	30	eventAddIsh("try_connections", try_connections, NULL, STARTUP_CONNECTIONS_TIME);
522
523			eventAddIsh("collect_zipstats", collect_zipstats, NULL, ZIPSTATS_TIME);
524
525	adx	743	// Setup the timeout check. I'll shift it later :) -- adrian
526	adx	30	eventAddIsh("comm_checktimeouts", comm_checktimeouts, NULL, 1);
527
528			io_loop();
529	michael	450	return 0;
530	adx	30	}
531	adx	185
532			#else
533
534			#include <windows.h>
535
536			extern __declspec(dllimport) main(int, char **);
537
538			/*
539			* Initial entry point for Win32 GUI applications, called by the C runtime.
540			*
541			* It should be only a wrapper for main(), since when compiled as a console
542			* application, main() is called instead.
543			*/
544			int WINAPI
545			WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
546			LPSTR lpCmdLine, int nCmdShow)
547			{
548			/* Do we really need these pidfile, logfile etc arguments?
549			* And we are not on a console, so -help or -foreground is meaningless. */
550
551			char *argv[2] = {"ircd", NULL};
552
553			return main(1, argv);
554			}
555
556			#endif