1*00b67f09SDavid van Moolenbroek /* $NetBSD: netscope.c,v 1.4 2014/12/10 04:37:59 christos Exp $ */
2*00b67f09SDavid van Moolenbroek
3*00b67f09SDavid van Moolenbroek /*
4*00b67f09SDavid van Moolenbroek * Copyright (C) 2004-2007 Internet Systems Consortium, Inc. ("ISC")
5*00b67f09SDavid van Moolenbroek * Copyright (C) 2002 Internet Software Consortium.
6*00b67f09SDavid van Moolenbroek *
7*00b67f09SDavid van Moolenbroek * Permission to use, copy, modify, and/or distribute this software for any
8*00b67f09SDavid van Moolenbroek * purpose with or without fee is hereby granted, provided that the above
9*00b67f09SDavid van Moolenbroek * copyright notice and this permission notice appear in all copies.
10*00b67f09SDavid van Moolenbroek *
11*00b67f09SDavid van Moolenbroek * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
12*00b67f09SDavid van Moolenbroek * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
13*00b67f09SDavid van Moolenbroek * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
14*00b67f09SDavid van Moolenbroek * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15*00b67f09SDavid van Moolenbroek * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
16*00b67f09SDavid van Moolenbroek * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17*00b67f09SDavid van Moolenbroek * PERFORMANCE OF THIS SOFTWARE.
18*00b67f09SDavid van Moolenbroek */
19*00b67f09SDavid van Moolenbroek
20*00b67f09SDavid van Moolenbroek /*! \file */
21*00b67f09SDavid van Moolenbroek
22*00b67f09SDavid van Moolenbroek #if defined(LIBC_SCCS) && !defined(lint)
23*00b67f09SDavid van Moolenbroek static char rcsid[] =
24*00b67f09SDavid van Moolenbroek "Id: netscope.c,v 1.13 2007/06/19 23:47:17 tbox Exp ";
25*00b67f09SDavid van Moolenbroek #endif /* LIBC_SCCS and not lint */
26*00b67f09SDavid van Moolenbroek
27*00b67f09SDavid van Moolenbroek #include <config.h>
28*00b67f09SDavid van Moolenbroek
29*00b67f09SDavid van Moolenbroek #include <isc/string.h>
30*00b67f09SDavid van Moolenbroek #include <isc/net.h>
31*00b67f09SDavid van Moolenbroek #include <isc/netscope.h>
32*00b67f09SDavid van Moolenbroek #include <isc/result.h>
33*00b67f09SDavid van Moolenbroek
34*00b67f09SDavid van Moolenbroek isc_result_t
isc_netscope_pton(int af,char * scopename,void * addr,isc_uint32_t * zoneid)35*00b67f09SDavid van Moolenbroek isc_netscope_pton(int af, char *scopename, void *addr, isc_uint32_t *zoneid) {
36*00b67f09SDavid van Moolenbroek char *ep;
37*00b67f09SDavid van Moolenbroek #ifdef ISC_PLATFORM_HAVEIFNAMETOINDEX
38*00b67f09SDavid van Moolenbroek unsigned int ifid;
39*00b67f09SDavid van Moolenbroek #endif
40*00b67f09SDavid van Moolenbroek struct in6_addr *in6;
41*00b67f09SDavid van Moolenbroek isc_uint32_t zone;
42*00b67f09SDavid van Moolenbroek isc_uint64_t llz;
43*00b67f09SDavid van Moolenbroek
44*00b67f09SDavid van Moolenbroek /* at this moment, we only support AF_INET6 */
45*00b67f09SDavid van Moolenbroek if (af != AF_INET6)
46*00b67f09SDavid van Moolenbroek return (ISC_R_FAILURE);
47*00b67f09SDavid van Moolenbroek
48*00b67f09SDavid van Moolenbroek in6 = (struct in6_addr *)addr;
49*00b67f09SDavid van Moolenbroek
50*00b67f09SDavid van Moolenbroek /*
51*00b67f09SDavid van Moolenbroek * Basically, "names" are more stable than numeric IDs in terms of
52*00b67f09SDavid van Moolenbroek * renumbering, and are more preferred. However, since there is no
53*00b67f09SDavid van Moolenbroek * standard naming convention and APIs to deal with the names. Thus,
54*00b67f09SDavid van Moolenbroek * we only handle the case of link-local addresses, for which we use
55*00b67f09SDavid van Moolenbroek * interface names as link names, assuming one to one mapping between
56*00b67f09SDavid van Moolenbroek * interfaces and links.
57*00b67f09SDavid van Moolenbroek */
58*00b67f09SDavid van Moolenbroek #ifdef ISC_PLATFORM_HAVEIFNAMETOINDEX
59*00b67f09SDavid van Moolenbroek if (IN6_IS_ADDR_LINKLOCAL(in6) &&
60*00b67f09SDavid van Moolenbroek (ifid = if_nametoindex((const char *)scopename)) != 0)
61*00b67f09SDavid van Moolenbroek zone = (isc_uint32_t)ifid;
62*00b67f09SDavid van Moolenbroek else {
63*00b67f09SDavid van Moolenbroek #endif
64*00b67f09SDavid van Moolenbroek llz = isc_string_touint64(scopename, &ep, 10);
65*00b67f09SDavid van Moolenbroek if (ep == scopename)
66*00b67f09SDavid van Moolenbroek return (ISC_R_FAILURE);
67*00b67f09SDavid van Moolenbroek
68*00b67f09SDavid van Moolenbroek /* check overflow */
69*00b67f09SDavid van Moolenbroek zone = (isc_uint32_t)(llz & 0xffffffffUL);
70*00b67f09SDavid van Moolenbroek if (zone != llz)
71*00b67f09SDavid van Moolenbroek return (ISC_R_FAILURE);
72*00b67f09SDavid van Moolenbroek #ifdef ISC_PLATFORM_HAVEIFNAMETOINDEX
73*00b67f09SDavid van Moolenbroek }
74*00b67f09SDavid van Moolenbroek #endif
75*00b67f09SDavid van Moolenbroek
76*00b67f09SDavid van Moolenbroek *zoneid = zone;
77*00b67f09SDavid van Moolenbroek return (ISC_R_SUCCESS);
78*00b67f09SDavid van Moolenbroek }
79