contrib/bind-9.5.2/lib/bind9/include/bind9/getaddresses.h

   1 /*
   2  * Copyright (C) 2004-2007, 2009  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 2001  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  10  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  11  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  12  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  13  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  14  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  15  * PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 /* $Id: getaddresses.h,v 1.9.128.2 2009/01/19 23:47:01 tbox Exp $ */
  19
  20 #ifndef BIND9_GETADDRESSES_H
  21 #define BIND9_GETADDRESSES_H 1
  22
  23 /*! \file bind9/getaddresses.h */
  24
  25 #include <isc/lang.h>
  26 #include <isc/types.h>
  27
  28 #include <isc/net.h>
  29
  30 ISC_LANG_BEGINDECLS
  31
  32 isc_result_t
  33 bind9_getaddresses(const char *hostname, in_port_t port,
  34                    isc_sockaddr_t *addrs, int addrsize, int *addrcount);
  35 /*%<
  36  * Use the system resolver to get the addresses associated with a hostname.
  37  * If successful, the number of addresses found is returned in 'addrcount'.
  38  * If a hostname lookup is performed and addresses of an unknown family is
  39  * seen, it is ignored.  If more than 'addrsize' addresses are seen, the
  40  * first 'addrsize' are returned and the remainder silently truncated.
  41  *
  42  * This routine may block.  If called by a program using the isc_app
  43  * framework, it should be surrounded by isc_app_block()/isc_app_unblock().
  44  *
  45  *  Requires:
  46  *\li   'hostname' is not NULL.
  47  *\li   'addrs' is not NULL.
  48  *\li   'addrsize' > 0
  49  *\li   'addrcount' is not NULL.
  50  *
  51  *
  52  * Returns:
  53  *\li   #ISC_R_SUCCESS
  54  *\li   #ISC_R_NOTFOUND
  55  *\li   #ISC_R_NOFAMILYSUPPORT - 'hostname' is an IPv6 address, and IPv6 is
  56  *              not supported.
  57  */
  58
  59 ISC_LANG_ENDDECLS
  60
  61 #endif /* BIND9_GETADDRESSES_H */