[thirdparty/cups.git] / scheduler / listen.c

/*
 * "$Id: listen.c 6649 2007-07-11 21:46:42Z mike $"
 *
 *   Server listening routines for the Common UNIX Printing System (CUPS)
 *   scheduler.
 *
 *   Copyright 2007 by Apple Inc.
 *   Copyright 1997-2006 by Easy Software Products, all rights reserved.
 *
 *   These coded instructions, statements, and computer programs are the
 *   property of Apple Inc. and are protected by Federal copyright
 *   law.  Distribution and use rights are outlined in the file "LICENSE.txt"
 *   which should have been included with this file.  If this file is
 *   file is missing or damaged, see the license at "http://www.cups.org/".
 *
 * Contents:
 *
 *   cupsdDeleteAllListeners() - Delete all listeners.
 *   cupsdPauseListening()     - Clear input polling on all listening sockets...
 *   cupsdResumeListening()    - Set input polling on all listening sockets...
 *   cupsdStartListening()     - Create all listening sockets...
 *   cupsdStopListening()      - Close all listening sockets...
 */

/*
 * Include necessary headers...
 */

#include "cupsd.h"


/*
 * Make sure the IPV6_V6ONLY is defined on Linux - older versions of
 * glibc don't define it even if the kernel supports it...
 */

#if defined(__linux) && !defined(IPV6_V6ONLY)
#  define IPV6_V6ONLY 26
#endif /* __linux && !IPV6_V6ONLY */


/*
 * 'cupsdDeleteAllListeners()' - Delete all listeners.
 */

void
cupsdDeleteAllListeners(void)
{
  cupsd_listener_t	*lis;		/* Current listening socket */


  for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners);
       lis;
       lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
    free(lis);

  cupsArrayDelete(Listeners);
  Listeners = NULL;
}


/*
 * 'cupsdPauseListening()' - Clear input polling on all listening sockets...
 */

void
cupsdPauseListening(void)
{
  cupsd_listener_t	*lis;		/* Current listening socket */


  if (cupsArrayCount(Listeners) < 1)
    return;

  if (cupsArrayCount(Clients) == MaxClients)
    cupsdLogMessage(CUPSD_LOG_WARN,
                    "Max clients reached, holding new connections...");

  cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdPauseListening: Clearing input bits...");

  for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners);
       lis;
       lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
    cupsdRemoveSelect(lis->fd);
}


/*
 * 'cupsdResumeListening()' - Set input polling on all listening sockets...
 */

void
cupsdResumeListening(void)
{
  cupsd_listener_t	*lis;		/* Current listening socket */


  if (cupsArrayCount(Listeners) < 1)
    return;

  if (cupsArrayCount(Clients) >= (MaxClients - 1))
    cupsdLogMessage(CUPSD_LOG_WARN, "Resuming new connection processing...");

  cupsdLogMessage(CUPSD_LOG_DEBUG2,
                  "cupsdResumeListening: Setting input bits...");

  for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners);
       lis;
       lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
    cupsdAddSelect(lis->fd, (cupsd_selfunc_t)cupsdAcceptClient, NULL, lis);
}


/*
 * 'cupsdStartListening()' - Create all listening sockets...
 */

void
cupsdStartListening(void)
{
  int			status;		/* Bind result */
  int			p,		/* Port number */
			val;		/* Parameter value */
  cupsd_listener_t	*lis;		/* Current listening socket */
  char			s[256];		/* String addresss */
  const char		*have_domain;	/* Have a domain socket? */
  static const char * const encryptions[] =
		{			/* Encryption values */
		  "IfRequested",
		  "Never",
		  "Required",
		  "Always"
		};


  cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdStartListening: %d Listeners",
                  cupsArrayCount(Listeners));

 /*
  * Get the server's IP address...
  */

  if (ServerAddrs)
    httpAddrFreeList(ServerAddrs);

  if ((ServerAddrs = httpAddrGetList(ServerName, AF_UNSPEC, NULL)) == NULL)
    cupsdLogMessage(CUPSD_LOG_ERROR,
                    "Unable to find IP address for server name \"%s\"!\n",
		    ServerName);

 /*
  * Setup socket listeners...
  */

  for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners), LocalPort = 0,
           have_domain = NULL;
       lis;
       lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
  {
    httpAddrString(&(lis->address), s, sizeof(s));

#ifdef AF_INET6
    if (lis->address.addr.sa_family == AF_INET6)
      p = ntohs(lis->address.ipv6.sin6_port);
    else
#endif /* AF_INET6 */
#ifdef AF_LOCAL
    if (lis->address.addr.sa_family == AF_LOCAL)
      p = 0;
    else
#endif /* AF_LOCAL */
    p = ntohs(lis->address.ipv4.sin_port);

   /*
    * If needed, create a socket for listening...
    */

    if (lis->fd == -1)
    {
     /*
      * Create a socket for listening...
      */

      lis->fd = socket(lis->address.addr.sa_family, SOCK_STREAM, 0);

      if (lis->fd == -1)
      {
	cupsdLogMessage(CUPSD_LOG_ERROR,
			"Unable to open listen socket for address %s:%d - %s.",
			s, p, strerror(errno));
	continue;
      }

     /*
      * Set things up to reuse the local address for this port.
      */

      val = 1;
#ifdef __sun
      setsockopt(lis->fd, SOL_SOCKET, SO_REUSEADDR, (char *)&val, sizeof(val));
#else
      setsockopt(lis->fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val));
#endif /* __sun */

     /*
      * Bind to the port we found...
      */

#ifdef AF_INET6
      if (lis->address.addr.sa_family == AF_INET6)
      {
#  ifdef IPV6_V6ONLY
       /*
	* Accept only IPv6 connections on this socket, to avoid
	* potential security issues and to make all platforms behave
	* the same.
	*/

	val = 1;
#    ifdef __sun
	setsockopt(lis->fd, IPPROTO_IPV6, IPV6_V6ONLY, (char *)&val, sizeof(val));
#    else
	setsockopt(lis->fd, IPPROTO_IPV6, IPV6_V6ONLY, &val, sizeof(val));
#    endif /* __sun */
#  endif /* IPV6_V6ONLY */

	status = bind(lis->fd, (struct sockaddr *)&(lis->address),
		      httpAddrLength(&(lis->address)));
      }
      else
#endif /* AF_INET6 */
#ifdef AF_LOCAL
      if (lis->address.addr.sa_family == AF_LOCAL)
      {
	mode_t	mask;			/* Umask setting */


       /*
	* Remove any existing domain socket file...
	*/

	unlink(lis->address.un.sun_path);

       /*
	* Save the curent umask and set it to 0...
	*/

	mask = umask(0);

       /*
	* Bind the domain socket...
	*/

	status = bind(lis->fd, (struct sockaddr *)&(lis->address),
		      httpAddrLength(&(lis->address)));

       /*
	* Restore the umask...
	*/

	umask(mask);
      }
      else
#endif /* AF_LOCAL */
      status = bind(lis->fd, (struct sockaddr *)&(lis->address),
		    sizeof(lis->address.ipv4));

      if (status < 0)
      {
	cupsdLogMessage(CUPSD_LOG_ERROR,
			"Unable to bind socket for address %s:%d - %s.",
			s, p, strerror(errno));
	close(lis->fd);
	lis->fd = -1;
	continue;
      }

     /*
      * Listen for new clients.
      */

      if (listen(lis->fd, ListenBackLog) < 0)
      {
	cupsdLogMessage(CUPSD_LOG_ERROR,
			"Unable to listen for clients on address %s:%d - %s.",
			s, p, strerror(errno));
	exit(errno);
      }
    }

    fcntl(lis->fd, F_SETFD, fcntl(lis->fd, F_GETFD) | FD_CLOEXEC);

    if (p)
      cupsdLogMessage(CUPSD_LOG_INFO, "Listening to %s:%d on fd %d...",
        	      s, p, lis->fd);
    else
    {
      cupsdLogMessage(CUPSD_LOG_INFO, "Listening to %s on fd %d...",
        	      s, lis->fd);

      if (chmod(s, 0140777))
	cupsdLogMessage(CUPSD_LOG_ERROR,
			"Unable to change permisssions on domain socket "
			"\"%s\" - %s", s, strerror(errno));
    }

   /*
    * Save the first port that is bound to the local loopback or
    * "any" address...
    */

    if ((!LocalPort || LocalEncryption == HTTP_ENCRYPT_ALWAYS) && p > 0 &&
        (httpAddrLocalhost(&(lis->address)) ||
         httpAddrAny(&(lis->address))))
    {
      LocalPort       = p;
      LocalEncryption = lis->encryption;
    }

#ifdef AF_LOCAL
    if (lis->address.addr.sa_family == AF_LOCAL && !have_domain)
      have_domain = lis->address.un.sun_path;
#endif /* AF_LOCAL */
  }

 /*
  * Make sure that we are listening on localhost!
  */

  if (!LocalPort && !have_domain)
  {
    cupsdLogMessage(CUPSD_LOG_EMERG,
                    "No Listen or Port lines were found to allow access via "
		    "localhost!");

   /*
    * Commit suicide...
    */

    cupsdEndProcess(getpid(), 0);
  }

 /*
  * Set the CUPS_SERVER, IPP_PORT, and CUPS_ENCRYPTION variables based on
  * the listeners...
  */

  if (have_domain)
  {
   /*
    * Use domain sockets for the local connection...
    */

    cupsdSetEnv("CUPS_SERVER", have_domain);

    LocalEncryption = HTTP_ENCRYPT_IF_REQUESTED;
  }
  else
  {
   /*
    * Use the default local loopback address for the server...
    */

    cupsdSetEnv("CUPS_SERVER", "localhost");
  }

  cupsdSetEnv("CUPS_ENCRYPTION", encryptions[LocalEncryption]);

  if (LocalPort)
    cupsdSetEnvf("IPP_PORT", "%d", LocalPort);

 /*
  * Resume listening for connections...
  */

  cupsdResumeListening();
}


/*
 * 'cupsdStopListening()' - Close all listening sockets...
 */

void
cupsdStopListening(void)
{
  cupsd_listener_t	*lis;		/* Current listening socket */


  cupsdLogMessage(CUPSD_LOG_DEBUG2,
                  "cupsdStopListening: closing all listen sockets.");

  cupsdPauseListening();

  for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners);
       lis;
       lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
  {
    if (lis->fd != -1)
    {
#ifdef WIN32
      closesocket(lis->fd);
#else
      close(lis->fd);
#endif /* WIN32 */

#ifdef AF_LOCAL
     /*
      * Remove domain sockets...
      */

#  ifdef HAVE_LAUNCH_H
      if (lis->address.addr.sa_family == AF_LOCAL && !Launchd)
#  else
      if (lis->address.addr.sa_family == AF_LOCAL)
#  endif /* HAVE_LAUNCH_H */
	unlink(lis->address.un.sun_path);
#endif /* AF_LOCAL */
    }
  }
}


/*
 * End of "$Id: listen.c 6649 2007-07-11 21:46:42Z mike $".
 */
Commit	Line	Data
ef416fc2	1	/*
bc44d920	2	* "$Id: listen.c 6649 2007-07-11 21:46:42Z mike $"
ef416fc2	3	*
	4	* Server listening routines for the Common UNIX Printing System (CUPS)
	5	* scheduler.
	6	*
bc44d920	7	* Copyright 2007 by Apple Inc.
4400e98d	8	* Copyright 1997-2006 by Easy Software Products, all rights reserved.
ef416fc2	9	*
ef416fc2	10	* These coded instructions, statements, and computer programs are the
bc44d920	11	* property of Apple Inc. and are protected by Federal copyright
	12	* law. Distribution and use rights are outlined in the file "LICENSE.txt"
	13	* which should have been included with this file. If this file is
	14	* file is missing or damaged, see the license at "http://www.cups.org/".
ef416fc2	15	*
	16	* Contents:
	17	*
bd7854cb	18	* cupsdDeleteAllListeners() - Delete all listeners.
	19	* cupsdPauseListening() - Clear input polling on all listening sockets...
	20	* cupsdResumeListening() - Set input polling on all listening sockets...
	21	* cupsdStartListening() - Create all listening sockets...
	22	* cupsdStopListening() - Close all listening sockets...
ef416fc2	23	*/
	24
	25	/*
	26	* Include necessary headers...
	27	*/
	28
	29	#include "cupsd.h"
	30
	31
	32	/*
	33	* Make sure the IPV6_V6ONLY is defined on Linux - older versions of
	34	* glibc don't define it even if the kernel supports it...
	35	*/
	36
	37	#if defined(__linux) && !defined(IPV6_V6ONLY)
	38	# define IPV6_V6ONLY 26
	39	#endif /* __linux && !IPV6_V6ONLY */
	40
	41
bd7854cb	42	/*
	43	* 'cupsdDeleteAllListeners()' - Delete all listeners.
	44	*/
	45
	46	void
	47	cupsdDeleteAllListeners(void)
	48	{
	49	cupsd_listener_t lis; / Current listening socket */
	50
	51
	52	for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners);
	53	lis;
	54	lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
	55	free(lis);
	56
	57	cupsArrayDelete(Listeners);
	58	Listeners = NULL;
	59	}
	60
	61
ef416fc2	62	/*
	63	* 'cupsdPauseListening()' - Clear input polling on all listening sockets...
	64	*/
	65
	66	void
	67	cupsdPauseListening(void)
	68	{
ef416fc2	69	cupsd_listener_t lis; / Current listening socket */
	70
	71
bd7854cb	72	if (cupsArrayCount(Listeners) < 1)
ef416fc2	73	return;
ef416fc2	74
bd7854cb	75	if (cupsArrayCount(Clients) == MaxClients)
ef416fc2	76	cupsdLogMessage(CUPSD_LOG_WARN,
	77	"Max clients reached, holding new connections...");
	78
bd7854cb	79	cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdPauseListening: Clearing input bits...");
ef416fc2	80
bd7854cb	81	for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners);
	82	lis;
	83	lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
f7deaa1a	84	cupsdRemoveSelect(lis->fd);
ef416fc2	85	}
	86
	87
	88	/*
	89	* 'cupsdResumeListening()' - Set input polling on all listening sockets...
	90	*/
	91
	92	void
	93	cupsdResumeListening(void)
	94	{
ef416fc2	95	cupsd_listener_t lis; / Current listening socket */
	96
	97
bd7854cb	98	if (cupsArrayCount(Listeners) < 1)
ef416fc2	99	return;
ef416fc2	100
bd7854cb	101	if (cupsArrayCount(Clients) >= (MaxClients - 1))
ef416fc2	102	cupsdLogMessage(CUPSD_LOG_WARN, "Resuming new connection processing...");
ef416fc2	103
bd7854cb	104	cupsdLogMessage(CUPSD_LOG_DEBUG2,
bd7854cb	105	"cupsdResumeListening: Setting input bits...");
ef416fc2	106
bd7854cb	107	for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners);
	108	lis;
	109	lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
f7deaa1a	110	cupsdAddSelect(lis->fd, (cupsd_selfunc_t)cupsdAcceptClient, NULL, lis);
ef416fc2	111	}
	112
	113
	114	/*
	115	* 'cupsdStartListening()' - Create all listening sockets...
	116	*/
	117
	118	void
	119	cupsdStartListening(void)
	120	{
	121	int status; /* Bind result */
bd7854cb	122	int p, /* Port number */
ef416fc2	123	val; /* Parameter value */
	124	cupsd_listener_t lis; / Current listening socket */
	125	char s[256]; /* String addresss */
	126	const char have_domain; / Have a domain socket? */
	127	static const char * const encryptions[] =
	128	{ /* Encryption values */
	129	"IfRequested",
	130	"Never",
	131	"Required",
	132	"Always"
	133	};
	134
	135
bd7854cb	136	cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdStartListening: %d Listeners",
bd7854cb	137	cupsArrayCount(Listeners));
ef416fc2	138
	139	/*
	140	* Get the server's IP address...
	141	*/
	142
	143	if (ServerAddrs)
	144	httpAddrFreeList(ServerAddrs);
	145
	146	if ((ServerAddrs = httpAddrGetList(ServerName, AF_UNSPEC, NULL)) == NULL)
	147	cupsdLogMessage(CUPSD_LOG_ERROR,
bd7854cb	148	"Unable to find IP address for server name \"%s\"!\n",
bd7854cb	149	ServerName);
ef416fc2	150
	151	/*
	152	* Setup socket listeners...
	153	*/
	154
bd7854cb	155	for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners), LocalPort = 0,
	156	have_domain = NULL;
	157	lis;
	158	lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
ef416fc2	159	{
	160	httpAddrString(&(lis->address), s, sizeof(s));
	161
	162	#ifdef AF_INET6
	163	if (lis->address.addr.sa_family == AF_INET6)
	164	p = ntohs(lis->address.ipv6.sin6_port);
	165	else
	166	#endif /* AF_INET6 */
	167	#ifdef AF_LOCAL
	168	if (lis->address.addr.sa_family == AF_LOCAL)
	169	p = 0;
	170	else
	171	#endif /* AF_LOCAL */
	172	p = ntohs(lis->address.ipv4.sin_port);
	173
	174	/*
a4d04587	175	* If needed, create a socket for listening...
ef416fc2	176	*/
ef416fc2	177
ef416fc2	178	if (lis->fd == -1)
ef416fc2	179	{
ef416fc2	180	/*
a4d04587	181	* Create a socket for listening...
ef416fc2	182	*/
bd7854cb	183
a4d04587	184	lis->fd = socket(lis->address.addr.sa_family, SOCK_STREAM, 0);
bd7854cb	185
a4d04587	186	if (lis->fd == -1)
	187	{
	188	cupsdLogMessage(CUPSD_LOG_ERROR,
bd7854cb	189	"Unable to open listen socket for address %s:%d - %s.",
a4d04587	190	s, p, strerror(errno));
	191	continue;
	192	}
bd7854cb	193
ef416fc2	194	/*
a4d04587	195	* Set things up to reuse the local address for this port.
ef416fc2	196	*/
bd7854cb	197
a4d04587	198	val = 1;
e00b005a	199	#ifdef __sun
a4d04587	200	setsockopt(lis->fd, SOL_SOCKET, SO_REUSEADDR, (char *)&val, sizeof(val));
e00b005a	201	#else
a4d04587	202	setsockopt(lis->fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val));
e00b005a	203	#endif /* __sun */
bd7854cb	204
ef416fc2	205	/*
a4d04587	206	* Bind to the port we found...
ef416fc2	207	*/
bd7854cb	208
e00b005a	209	#ifdef AF_INET6
a4d04587	210	if (lis->address.addr.sa_family == AF_INET6)
a4d04587	211	{
e00b005a	212	# ifdef IPV6_V6ONLY
a4d04587	213	/*
	214	* Accept only IPv6 connections on this socket, to avoid
	215	* potential security issues and to make all platforms behave
	216	* the same.
	217	*/
bd7854cb	218
a4d04587	219	val = 1;
e00b005a	220	# ifdef __sun
a4d04587	221	setsockopt(lis->fd, IPPROTO_IPV6, IPV6_V6ONLY, (char *)&val, sizeof(val));
e00b005a	222	# else
a4d04587	223	setsockopt(lis->fd, IPPROTO_IPV6, IPV6_V6ONLY, &val, sizeof(val));
e00b005a	224	# endif /* __sun */
e00b005a	225	# endif /* IPV6_V6ONLY */
bd7854cb	226
a4d04587	227	status = bind(lis->fd, (struct sockaddr *)&(lis->address),
	228	httpAddrLength(&(lis->address)));
	229	}
	230	else
e00b005a	231	#endif /* AF_INET6 */
e00b005a	232	#ifdef AF_LOCAL
a4d04587	233	if (lis->address.addr.sa_family == AF_LOCAL)
	234	{
	235	mode_t mask; /* Umask setting */
bd7854cb	236
bd7854cb	237
a4d04587	238	/*
	239	* Remove any existing domain socket file...
	240	*/
bd7854cb	241
a4d04587	242	unlink(lis->address.un.sun_path);
bd7854cb	243
a4d04587	244	/*
	245	* Save the curent umask and set it to 0...
	246	*/
bd7854cb	247
a4d04587	248	mask = umask(0);
bd7854cb	249
a4d04587	250	/*
	251	* Bind the domain socket...
	252	*/
bd7854cb	253
a4d04587	254	status = bind(lis->fd, (struct sockaddr *)&(lis->address),
a4d04587	255	httpAddrLength(&(lis->address)));
bd7854cb	256
a4d04587	257	/*
	258	* Restore the umask...
	259	*/
bd7854cb	260
a4d04587	261	umask(mask);
	262	}
	263	else
e00b005a	264	#endif /* AF_LOCAL */
ef416fc2	265	status = bind(lis->fd, (struct sockaddr *)&(lis->address),
a4d04587	266	sizeof(lis->address.ipv4));
bd7854cb	267
a4d04587	268	if (status < 0)
	269	{
	270	cupsdLogMessage(CUPSD_LOG_ERROR,
bd7854cb	271	"Unable to bind socket for address %s:%d - %s.",
a4d04587	272	s, p, strerror(errno));
	273	close(lis->fd);
	274	lis->fd = -1;
	275	continue;
	276	}
bd7854cb	277
ef416fc2	278	/*
a4d04587	279	* Listen for new clients.
ef416fc2	280	*/
bd7854cb	281
a4d04587	282	if (listen(lis->fd, ListenBackLog) < 0)
	283	{
	284	cupsdLogMessage(CUPSD_LOG_ERROR,
bd7854cb	285	"Unable to listen for clients on address %s:%d - %s.",
a4d04587	286	s, p, strerror(errno));
	287	exit(errno);
	288	}
ef416fc2	289	}
ef416fc2	290
a4d04587	291	fcntl(lis->fd, F_SETFD, fcntl(lis->fd, F_GETFD) \| FD_CLOEXEC);
ef416fc2	292
ef416fc2	293	if (p)
bd7854cb	294	cupsdLogMessage(CUPSD_LOG_INFO, "Listening to %s:%d on fd %d...",
ef416fc2	295	s, p, lis->fd);
ef416fc2	296	else
4400e98d	297	{
bd7854cb	298	cupsdLogMessage(CUPSD_LOG_INFO, "Listening to %s on fd %d...",
ef416fc2	299	s, lis->fd);
ef416fc2	300
4400e98d	301	if (chmod(s, 0140777))
4400e98d	302	cupsdLogMessage(CUPSD_LOG_ERROR,
bd7854cb	303	"Unable to change permisssions on domain socket "
bd7854cb	304	"\"%s\" - %s", s, strerror(errno));
4400e98d	305	}
4400e98d	306
ef416fc2	307	/*
	308	* Save the first port that is bound to the local loopback or
	309	* "any" address...
	310	*/
	311
8ca02f3c	312	if ((!LocalPort \|\| LocalEncryption == HTTP_ENCRYPT_ALWAYS) && p > 0 &&
ef416fc2	313	(httpAddrLocalhost(&(lis->address)) \|\|
	314	httpAddrAny(&(lis->address))))
	315	{
	316	LocalPort = p;
	317	LocalEncryption = lis->encryption;
	318	}
	319
	320	#ifdef AF_LOCAL
	321	if (lis->address.addr.sa_family == AF_LOCAL && !have_domain)
	322	have_domain = lis->address.un.sun_path;
	323	#endif /* AF_LOCAL */
	324	}
	325
	326	/*
	327	* Make sure that we are listening on localhost!
	328	*/
	329
	330	if (!LocalPort && !have_domain)
	331	{
	332	cupsdLogMessage(CUPSD_LOG_EMERG,
07725fee	333	"No Listen or Port lines were found to allow access via "
07725fee	334	"localhost!");
ef416fc2	335
	336	/*
	337	* Commit suicide...
	338	*/
	339
	340	cupsdEndProcess(getpid(), 0);
	341	}
	342
	343	/*
	344	* Set the CUPS_SERVER, IPP_PORT, and CUPS_ENCRYPTION variables based on
	345	* the listeners...
	346	*/
	347
	348	if (have_domain)
	349	{
	350	/*
	351	* Use domain sockets for the local connection...
	352	*/
	353
	354	cupsdSetEnv("CUPS_SERVER", have_domain);
8ca02f3c	355
8ca02f3c	356	LocalEncryption = HTTP_ENCRYPT_IF_REQUESTED;
ef416fc2	357	}
	358	else
	359	{
	360	/*
	361	* Use the default local loopback address for the server...
	362	*/
	363
	364	cupsdSetEnv("CUPS_SERVER", "localhost");
	365	}
	366
	367	cupsdSetEnv("CUPS_ENCRYPTION", encryptions[LocalEncryption]);
07725fee	368
	369	if (LocalPort)
	370	cupsdSetEnvf("IPP_PORT", "%d", LocalPort);
ef416fc2	371
	372	/*
	373	* Resume listening for connections...
	374	*/
	375
	376	cupsdResumeListening();
	377	}
	378
	379
	380	/*
	381	* 'cupsdStopListening()' - Close all listening sockets...
	382	*/
	383
	384	void
	385	cupsdStopListening(void)
	386	{
ef416fc2	387	cupsd_listener_t lis; / Current listening socket */
	388
	389
bd7854cb	390	cupsdLogMessage(CUPSD_LOG_DEBUG2,
ef416fc2	391	"cupsdStopListening: closing all listen sockets.");
	392
	393	cupsdPauseListening();
	394
bd7854cb	395	for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners);
	396	lis;
	397	lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
ef416fc2	398	{
a4d04587	399	if (lis->fd != -1)
a4d04587	400	{
ef416fc2	401	#ifdef WIN32
a4d04587	402	closesocket(lis->fd);
ef416fc2	403	#else
a4d04587	404	close(lis->fd);
ef416fc2	405	#endif /* WIN32 */
	406
	407	#ifdef AF_LOCAL
4400e98d	408	/*
	409	* Remove domain sockets...
	410	*/
ef416fc2	411
4400e98d	412	# ifdef HAVE_LAUNCH_H
	413	if (lis->address.addr.sa_family == AF_LOCAL && !Launchd)
	414	# else
a4d04587	415	if (lis->address.addr.sa_family == AF_LOCAL)
4400e98d	416	# endif /* HAVE_LAUNCH_H */
a4d04587	417	unlink(lis->address.un.sun_path);
ef416fc2	418	#endif /* AF_LOCAL */
a4d04587	419	}
ef416fc2	420	}
	421	}
	422
	423
	424	/*
bc44d920	425	* End of "$Id: listen.c 6649 2007-07-11 21:46:42Z mike $".
ef416fc2	426	*/