Function cupsdNetIFUpdate

scheduler/network.c:84–282

 */

void
cupsdNetIFUpdate(void)
{
  int			match;		/* Matching address? */
  cupsd_listener_t	*lis;		/* Listen address */
  cupsd_netif_t		*temp;		/* New interface */
  struct ifaddrs	*addrs,		/* Interface address list */
			*addr;		/* Current interface address */
  char			hostname[1024];	/* Hostname for address */
  size_t		hostlen;	/* Length of hostname */


 /*
  * Only update the list if we need to...
  */

  if (!NetIFUpdate)
    return;

  NetIFUpdate = 0;

 /*
  * Free the old interfaces...
  */

  cupsdNetIFFree();

 /*
  * Make sure we have an array...
  */

  if (!NetIFList)
    NetIFList = cupsArrayNew((cups_array_func_t)compare_netif, NULL);

  if (!NetIFList)
    return;

 /*
  * Grab a new list of interfaces...
  */

  if (getifaddrs(&addrs) < 0)
  {
    cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdNetIFUpdate: Unable to get interface list - %s", strerror(errno));
    return;
  }

  for (addr = addrs; addr != NULL; addr = addr->ifa_next)
  {
   /*
    * See if this interface address is IPv4 or IPv6...
    */

    if (addr->ifa_addr == NULL ||
        (addr->ifa_addr->sa_family != AF_INET
#ifdef AF_INET6
	 && addr->ifa_addr->sa_family != AF_INET6
#endif