75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2004 Internet Systems Consortium, Inc. ("ISC")
|
||
|
|
* Copyright (C) 2002 Internet Software Consortium.
|
||
|
|
*
|
||
|
|
* Permission to use, copy, modify, and distribute this software for any
|
||
|
|
* purpose with or without fee is hereby granted, provided that the above
|
||
|
|
* copyright notice and this permission notice appear in all copies.
|
||
|
|
*
|
||
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
|
||
|
|
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
|
||
|
|
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
|
||
|
|
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
|
||
|
|
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
|
||
|
|
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
|
||
|
|
* PERFORMANCE OF THIS SOFTWARE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
||
|
|
static char rcsid[] =
|
||
|
|
"$Id: netscope.c,v 1.5.142.7 2004/03/12 10:31:26 marka Exp $";
|
||
|
|
#endif /* LIBC_SCCS and not lint */
|
||
|
|
|
||
|
|
#include <config.h>
|
||
|
|
|
||
|
|
#include <isc/string.h>
|
||
|
|
#include <isc/net.h>
|
||
|
|
#include <isc/netscope.h>
|
||
|
|
#include <isc/result.h>
|
||
|
|
|
||
|
|
isc_result_t
|
||
|
|
isc_netscope_pton(int af, char *scopename, void *addr, isc_uint32_t *zoneid) {
|
||
|
|
char *ep;
|
||
|
|
#ifdef ISC_PLATFORM_HAVEIFNAMETOINDEX
|
||
|
|
unsigned int ifid;
|
||
|
|
#endif
|
||
|
|
struct in6_addr *in6;
|
||
|
|
isc_uint32_t zone;
|
||
|
|
isc_uint64_t llz;
|
||
|
|
|
||
|
|
/* at this moment, we only support AF_INET6 */
|
||
|
|
if (af != AF_INET6)
|
||
|
|
return (ISC_R_FAILURE);
|
||
|
|
|
||
|
|
in6 = (struct in6_addr *)addr;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Basically, "names" are more stable than numeric IDs in terms of
|
||
|
|
* renumbering, and are more preferred. However, since there is no
|
||
|
|
* standard naming convention and APIs to deal with the names. Thus,
|
||
|
|
* we only handle the case of link-local addresses, for which we use
|
||
|
|
* interface names as link names, assuming one to one mapping between
|
||
|
|
* interfaces and links.
|
||
|
|
*/
|
||
|
|
#ifdef ISC_PLATFORM_HAVEIFNAMETOINDEX
|
||
|
|
if (IN6_IS_ADDR_LINKLOCAL(in6) &&
|
||
|
|
(ifid = if_nametoindex((const char *)scopename)) != 0)
|
||
|
|
zone = (isc_uint32_t)ifid;
|
||
|
|
else {
|
||
|
|
#endif
|
||
|
|
llz = isc_string_touint64(scopename, &ep, 10);
|
||
|
|
if (ep == scopename)
|
||
|
|
return (ISC_R_FAILURE);
|
||
|
|
|
||
|
|
/* check overflow */
|
||
|
|
zone = (isc_uint32_t)(llz & 0xffffffffUL);
|
||
|
|
if (zone != llz)
|
||
|
|
return (ISC_R_FAILURE);
|
||
|
|
#ifdef ISC_PLATFORM_HAVEIFNAMETOINDEX
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
*zoneid = zone;
|
||
|
|
return (ISC_R_SUCCESS);
|
||
|
|
}
|