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

/*
 * "$Id: listen.c 6123 2006-11-21 15:36:04Z mike $"
 *
 *   Server listening routines for the Common UNIX Printing System (CUPS)
 *   scheduler.
 *
 *   Copyright 1997-2006 by Easy Software Products, all rights reserved.
 *
 *   These coded instructions, statements, and computer programs are the
 *   property of Easy Software Products 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 missing or damaged please contact Easy Software Products
 *   at:
 *
 *       Attn: CUPS Licensing Information
 *       Easy Software Products
 *       44141 Airport View Drive, Suite 204
 *       Hollywood, Maryland 20636 USA
 *
 *       Voice: (301) 373-9600
 *       EMail: cups-info@cups.org
 *         WWW: 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 6123 2006-11-21 15:36:04Z mike $".
 */
Commit	Line	Data
ef416fc2	1	/*
f7deaa1a	2	* "$Id: listen.c 6123 2006-11-21 15:36:04Z mike $"
ef416fc2	3	*
	4	* Server listening routines for the Common UNIX Printing System (CUPS)
	5	* scheduler.
	6	*
4400e98d	7	* Copyright 1997-2006 by Easy Software Products, all rights reserved.
ef416fc2	8	*
	9	* These coded instructions, statements, and computer programs are the
	10	* property of Easy Software Products and are protected by Federal
	11	* copyright law. Distribution and use rights are outlined in the file
	12	* "LICENSE.txt" which should have been included with this file. If this
	13	* file is missing or damaged please contact Easy Software Products
	14	* at:
	15	*
	16	* Attn: CUPS Licensing Information
	17	* Easy Software Products
	18	* 44141 Airport View Drive, Suite 204
	19	* Hollywood, Maryland 20636 USA
	20	*
	21	* Voice: (301) 373-9600
	22	* EMail: cups-info@cups.org
	23	* WWW: http://www.cups.org
	24	*
	25	* Contents:
	26	*
bd7854cb	27	* cupsdDeleteAllListeners() - Delete all listeners.
	28	* cupsdPauseListening() - Clear input polling on all listening sockets...
	29	* cupsdResumeListening() - Set input polling on all listening sockets...
	30	* cupsdStartListening() - Create all listening sockets...
	31	* cupsdStopListening() - Close all listening sockets...
ef416fc2	32	*/
	33
	34	/*
	35	* Include necessary headers...
	36	*/
	37
	38	#include "cupsd.h"
	39
	40
	41	/*
	42	* Make sure the IPV6_V6ONLY is defined on Linux - older versions of
	43	* glibc don't define it even if the kernel supports it...
	44	*/
	45
	46	#if defined(__linux) && !defined(IPV6_V6ONLY)
	47	# define IPV6_V6ONLY 26
	48	#endif /* __linux && !IPV6_V6ONLY */
	49
	50
bd7854cb	51	/*
	52	* 'cupsdDeleteAllListeners()' - Delete all listeners.
	53	*/
	54
	55	void
	56	cupsdDeleteAllListeners(void)
	57	{
	58	cupsd_listener_t lis; / Current listening socket */
	59
	60
	61	for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners);
	62	lis;
	63	lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
	64	free(lis);
	65
	66	cupsArrayDelete(Listeners);
	67	Listeners = NULL;
	68	}
	69
	70
ef416fc2	71	/*
	72	* 'cupsdPauseListening()' - Clear input polling on all listening sockets...
	73	*/
	74
	75	void
	76	cupsdPauseListening(void)
	77	{
ef416fc2	78	cupsd_listener_t lis; / Current listening socket */
	79
	80
bd7854cb	81	if (cupsArrayCount(Listeners) < 1)
ef416fc2	82	return;
ef416fc2	83
bd7854cb	84	if (cupsArrayCount(Clients) == MaxClients)
ef416fc2	85	cupsdLogMessage(CUPSD_LOG_WARN,
	86	"Max clients reached, holding new connections...");
	87
bd7854cb	88	cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdPauseListening: Clearing input bits...");
ef416fc2	89
bd7854cb	90	for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners);
	91	lis;
	92	lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
f7deaa1a	93	cupsdRemoveSelect(lis->fd);
ef416fc2	94	}
	95
	96
	97	/*
	98	* 'cupsdResumeListening()' - Set input polling on all listening sockets...
	99	*/
	100
	101	void
	102	cupsdResumeListening(void)
	103	{
ef416fc2	104	cupsd_listener_t lis; / Current listening socket */
	105
	106
bd7854cb	107	if (cupsArrayCount(Listeners) < 1)
ef416fc2	108	return;
ef416fc2	109
bd7854cb	110	if (cupsArrayCount(Clients) >= (MaxClients - 1))
ef416fc2	111	cupsdLogMessage(CUPSD_LOG_WARN, "Resuming new connection processing...");
ef416fc2	112
bd7854cb	113	cupsdLogMessage(CUPSD_LOG_DEBUG2,
bd7854cb	114	"cupsdResumeListening: Setting input bits...");
ef416fc2	115
bd7854cb	116	for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners);
	117	lis;
	118	lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
f7deaa1a	119	cupsdAddSelect(lis->fd, (cupsd_selfunc_t)cupsdAcceptClient, NULL, lis);
ef416fc2	120	}
	121
	122
	123	/*
	124	* 'cupsdStartListening()' - Create all listening sockets...
	125	*/
	126
	127	void
	128	cupsdStartListening(void)
	129	{
	130	int status; /* Bind result */
bd7854cb	131	int p, /* Port number */
ef416fc2	132	val; /* Parameter value */
	133	cupsd_listener_t lis; / Current listening socket */
	134	char s[256]; /* String addresss */
	135	const char have_domain; / Have a domain socket? */
	136	static const char * const encryptions[] =
	137	{ /* Encryption values */
	138	"IfRequested",
	139	"Never",
	140	"Required",
	141	"Always"
	142	};
	143
	144
bd7854cb	145	cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdStartListening: %d Listeners",
bd7854cb	146	cupsArrayCount(Listeners));
ef416fc2	147
	148	/*
	149	* Get the server's IP address...
	150	*/
	151
	152	if (ServerAddrs)
	153	httpAddrFreeList(ServerAddrs);
	154
	155	if ((ServerAddrs = httpAddrGetList(ServerName, AF_UNSPEC, NULL)) == NULL)
	156	cupsdLogMessage(CUPSD_LOG_ERROR,
bd7854cb	157	"Unable to find IP address for server name \"%s\"!\n",
bd7854cb	158	ServerName);
ef416fc2	159
	160	/*
	161	* Setup socket listeners...
	162	*/
	163
bd7854cb	164	for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners), LocalPort = 0,
	165	have_domain = NULL;
	166	lis;
	167	lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
ef416fc2	168	{
	169	httpAddrString(&(lis->address), s, sizeof(s));
	170
	171	#ifdef AF_INET6
	172	if (lis->address.addr.sa_family == AF_INET6)
	173	p = ntohs(lis->address.ipv6.sin6_port);
	174	else
	175	#endif /* AF_INET6 */
	176	#ifdef AF_LOCAL
	177	if (lis->address.addr.sa_family == AF_LOCAL)
	178	p = 0;
	179	else
	180	#endif /* AF_LOCAL */
	181	p = ntohs(lis->address.ipv4.sin_port);
	182
	183	/*
a4d04587	184	* If needed, create a socket for listening...
ef416fc2	185	*/
ef416fc2	186
ef416fc2	187	if (lis->fd == -1)
ef416fc2	188	{
ef416fc2	189	/*
a4d04587	190	* Create a socket for listening...
ef416fc2	191	*/
bd7854cb	192
a4d04587	193	lis->fd = socket(lis->address.addr.sa_family, SOCK_STREAM, 0);
bd7854cb	194
a4d04587	195	if (lis->fd == -1)
	196	{
	197	cupsdLogMessage(CUPSD_LOG_ERROR,
bd7854cb	198	"Unable to open listen socket for address %s:%d - %s.",
a4d04587	199	s, p, strerror(errno));
	200	continue;
	201	}
bd7854cb	202
ef416fc2	203	/*
a4d04587	204	* Set things up to reuse the local address for this port.
ef416fc2	205	*/
bd7854cb	206
a4d04587	207	val = 1;
e00b005a	208	#ifdef __sun
a4d04587	209	setsockopt(lis->fd, SOL_SOCKET, SO_REUSEADDR, (char *)&val, sizeof(val));
e00b005a	210	#else
a4d04587	211	setsockopt(lis->fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val));
e00b005a	212	#endif /* __sun */
bd7854cb	213
ef416fc2	214	/*
a4d04587	215	* Bind to the port we found...
ef416fc2	216	*/
bd7854cb	217
e00b005a	218	#ifdef AF_INET6
a4d04587	219	if (lis->address.addr.sa_family == AF_INET6)
a4d04587	220	{
e00b005a	221	# ifdef IPV6_V6ONLY
a4d04587	222	/*
	223	* Accept only IPv6 connections on this socket, to avoid
	224	* potential security issues and to make all platforms behave
	225	* the same.
	226	*/
bd7854cb	227
a4d04587	228	val = 1;
e00b005a	229	# ifdef __sun
a4d04587	230	setsockopt(lis->fd, IPPROTO_IPV6, IPV6_V6ONLY, (char *)&val, sizeof(val));
e00b005a	231	# else
a4d04587	232	setsockopt(lis->fd, IPPROTO_IPV6, IPV6_V6ONLY, &val, sizeof(val));
e00b005a	233	# endif /* __sun */
e00b005a	234	# endif /* IPV6_V6ONLY */
bd7854cb	235
a4d04587	236	status = bind(lis->fd, (struct sockaddr *)&(lis->address),
	237	httpAddrLength(&(lis->address)));
	238	}
	239	else
e00b005a	240	#endif /* AF_INET6 */
e00b005a	241	#ifdef AF_LOCAL
a4d04587	242	if (lis->address.addr.sa_family == AF_LOCAL)
	243	{
	244	mode_t mask; /* Umask setting */
bd7854cb	245
bd7854cb	246
a4d04587	247	/*
	248	* Remove any existing domain socket file...
	249	*/
bd7854cb	250
a4d04587	251	unlink(lis->address.un.sun_path);
bd7854cb	252
a4d04587	253	/*
	254	* Save the curent umask and set it to 0...
	255	*/
bd7854cb	256
a4d04587	257	mask = umask(0);
bd7854cb	258
a4d04587	259	/*
	260	* Bind the domain socket...
	261	*/
bd7854cb	262
a4d04587	263	status = bind(lis->fd, (struct sockaddr *)&(lis->address),
a4d04587	264	httpAddrLength(&(lis->address)));
bd7854cb	265
a4d04587	266	/*
	267	* Restore the umask...
	268	*/
bd7854cb	269
a4d04587	270	umask(mask);
	271	}
	272	else
e00b005a	273	#endif /* AF_LOCAL */
ef416fc2	274	status = bind(lis->fd, (struct sockaddr *)&(lis->address),
a4d04587	275	sizeof(lis->address.ipv4));
bd7854cb	276
a4d04587	277	if (status < 0)
	278	{
	279	cupsdLogMessage(CUPSD_LOG_ERROR,
bd7854cb	280	"Unable to bind socket for address %s:%d - %s.",
a4d04587	281	s, p, strerror(errno));
	282	close(lis->fd);
	283	lis->fd = -1;
	284	continue;
	285	}
bd7854cb	286
ef416fc2	287	/*
a4d04587	288	* Listen for new clients.
ef416fc2	289	*/
bd7854cb	290
a4d04587	291	if (listen(lis->fd, ListenBackLog) < 0)
	292	{
	293	cupsdLogMessage(CUPSD_LOG_ERROR,
bd7854cb	294	"Unable to listen for clients on address %s:%d - %s.",
a4d04587	295	s, p, strerror(errno));
	296	exit(errno);
	297	}
ef416fc2	298	}
ef416fc2	299
a4d04587	300	fcntl(lis->fd, F_SETFD, fcntl(lis->fd, F_GETFD) \| FD_CLOEXEC);
ef416fc2	301
ef416fc2	302	if (p)
bd7854cb	303	cupsdLogMessage(CUPSD_LOG_INFO, "Listening to %s:%d on fd %d...",
ef416fc2	304	s, p, lis->fd);
ef416fc2	305	else
4400e98d	306	{
bd7854cb	307	cupsdLogMessage(CUPSD_LOG_INFO, "Listening to %s on fd %d...",
ef416fc2	308	s, lis->fd);
ef416fc2	309
4400e98d	310	if (chmod(s, 0140777))
4400e98d	311	cupsdLogMessage(CUPSD_LOG_ERROR,
bd7854cb	312	"Unable to change permisssions on domain socket "
bd7854cb	313	"\"%s\" - %s", s, strerror(errno));
4400e98d	314	}
4400e98d	315
ef416fc2	316	/*
	317	* Save the first port that is bound to the local loopback or
	318	* "any" address...
	319	*/
	320
8ca02f3c	321	if ((!LocalPort \|\| LocalEncryption == HTTP_ENCRYPT_ALWAYS) && p > 0 &&
ef416fc2	322	(httpAddrLocalhost(&(lis->address)) \|\|
	323	httpAddrAny(&(lis->address))))
	324	{
	325	LocalPort = p;
	326	LocalEncryption = lis->encryption;
	327	}
	328
	329	#ifdef AF_LOCAL
	330	if (lis->address.addr.sa_family == AF_LOCAL && !have_domain)
	331	have_domain = lis->address.un.sun_path;
	332	#endif /* AF_LOCAL */
	333	}
	334
	335	/*
	336	* Make sure that we are listening on localhost!
	337	*/
	338
	339	if (!LocalPort && !have_domain)
	340	{
	341	cupsdLogMessage(CUPSD_LOG_EMERG,
07725fee	342	"No Listen or Port lines were found to allow access via "
07725fee	343	"localhost!");
ef416fc2	344
	345	/*
	346	* Commit suicide...
	347	*/
	348
	349	cupsdEndProcess(getpid(), 0);
	350	}
	351
	352	/*
	353	* Set the CUPS_SERVER, IPP_PORT, and CUPS_ENCRYPTION variables based on
	354	* the listeners...
	355	*/
	356
	357	if (have_domain)
	358	{
	359	/*
	360	* Use domain sockets for the local connection...
	361	*/
	362
	363	cupsdSetEnv("CUPS_SERVER", have_domain);
8ca02f3c	364
8ca02f3c	365	LocalEncryption = HTTP_ENCRYPT_IF_REQUESTED;
ef416fc2	366	}
	367	else
	368	{
	369	/*
	370	* Use the default local loopback address for the server...
	371	*/
	372
	373	cupsdSetEnv("CUPS_SERVER", "localhost");
	374	}
	375
	376	cupsdSetEnv("CUPS_ENCRYPTION", encryptions[LocalEncryption]);
07725fee	377
	378	if (LocalPort)
	379	cupsdSetEnvf("IPP_PORT", "%d", LocalPort);
ef416fc2	380
	381	/*
	382	* Resume listening for connections...
	383	*/
	384
	385	cupsdResumeListening();
	386	}
	387
	388
	389	/*
	390	* 'cupsdStopListening()' - Close all listening sockets...
	391	*/
	392
	393	void
	394	cupsdStopListening(void)
	395	{
ef416fc2	396	cupsd_listener_t lis; / Current listening socket */
	397
	398
bd7854cb	399	cupsdLogMessage(CUPSD_LOG_DEBUG2,
ef416fc2	400	"cupsdStopListening: closing all listen sockets.");
	401
	402	cupsdPauseListening();
	403
bd7854cb	404	for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners);
	405	lis;
	406	lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
ef416fc2	407	{
a4d04587	408	if (lis->fd != -1)
a4d04587	409	{
ef416fc2	410	#ifdef WIN32
a4d04587	411	closesocket(lis->fd);
ef416fc2	412	#else
a4d04587	413	close(lis->fd);
ef416fc2	414	#endif /* WIN32 */
	415
	416	#ifdef AF_LOCAL
4400e98d	417	/*
	418	* Remove domain sockets...
	419	*/
ef416fc2	420
4400e98d	421	# ifdef HAVE_LAUNCH_H
	422	if (lis->address.addr.sa_family == AF_LOCAL && !Launchd)
	423	# else
a4d04587	424	if (lis->address.addr.sa_family == AF_LOCAL)
4400e98d	425	# endif /* HAVE_LAUNCH_H */
a4d04587	426	unlink(lis->address.un.sun_path);
ef416fc2	427	#endif /* AF_LOCAL */
a4d04587	428	}
ef416fc2	429	}
	430	}
	431
	432
	433	/*
f7deaa1a	434	* End of "$Id: listen.c 6123 2006-11-21 15:36:04Z mike $".
ef416fc2	435	*/