1*4b22b933Srs /*
2*4b22b933Srs * CDDL HEADER START
3*4b22b933Srs *
4*4b22b933Srs * The contents of this file are subject to the terms of the
5*4b22b933Srs * Common Development and Distribution License (the "License").
6*4b22b933Srs * You may not use this file except in compliance with the License.
7*4b22b933Srs *
8*4b22b933Srs * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*4b22b933Srs * or http://www.opensolaris.org/os/licensing.
10*4b22b933Srs * See the License for the specific language governing permissions
11*4b22b933Srs * and limitations under the License.
12*4b22b933Srs *
13*4b22b933Srs * When distributing Covered Code, include this CDDL HEADER in each
14*4b22b933Srs * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*4b22b933Srs * If applicable, add the following below this CDDL HEADER, with the
16*4b22b933Srs * fields enclosed by brackets "[]" replaced with your own identifying
17*4b22b933Srs * information: Portions Copyright [yyyy] [name of copyright owner]
18*4b22b933Srs *
19*4b22b933Srs * CDDL HEADER END
20*4b22b933Srs */
21*4b22b933Srs
22*4b22b933Srs /*
23*4b22b933Srs * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
24*4b22b933Srs * Use is subject to license terms.
25*4b22b933Srs */
26*4b22b933Srs
27*4b22b933Srs #include "mdns_common.h"
28*4b22b933Srs
29*4b22b933Srs /*
30*4b22b933Srs * gethostby* functions for the ipnodes database. The ipnodes
31*4b22b933Srs * database stores both IPv4 and IPv6 address information.
32*4b22b933Srs * mDNS query functions to perform the host lookup are
33*4b22b933Srs * in mdns/common/mdns_common.c file.
34*4b22b933Srs * _nss_mdns_ipnodes_constr is called to initialize
35*4b22b933Srs * the nsswitch backend data structures.
36*4b22b933Srs */
37*4b22b933Srs
38*4b22b933Srs static nss_status_t
getbyname(be,a)39*4b22b933Srs getbyname(be, a)
40*4b22b933Srs mdns_backend_ptr_t be;
41*4b22b933Srs void *a;
42*4b22b933Srs {
43*4b22b933Srs nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a;
44*4b22b933Srs int af = argp->key.ipnode.af_family;
45*4b22b933Srs char *hname = (char *)argp->key.ipnode.name;
46*4b22b933Srs struct mdns_querydata qdata;
47*4b22b933Srs
48*4b22b933Srs (void) memset(&qdata, 0, sizeof (struct mdns_querydata));
49*4b22b933Srs qdata.argp = argp;
50*4b22b933Srs
51*4b22b933Srs _nss_mdns_updatecfg(be);
52*4b22b933Srs return (_nss_mdns_querybyname(be, hname, af, &qdata));
53*4b22b933Srs }
54*4b22b933Srs
55*4b22b933Srs static nss_status_t
getbyaddr(be,a)56*4b22b933Srs getbyaddr(be, a)
57*4b22b933Srs mdns_backend_ptr_t be;
58*4b22b933Srs void *a;
59*4b22b933Srs {
60*4b22b933Srs int i;
61*4b22b933Srs char ch;
62*4b22b933Srs char *chptr;
63*4b22b933Srs uint8_t *p;
64*4b22b933Srs struct in6_addr *addr;
65*4b22b933Srs struct mdns_querydata qdata;
66*4b22b933Srs char addrqryname[ sizeof ("f.f.f.f.f.f.f.f.f.f.f.f.f.f.f.f") + \
67*4b22b933Srs sizeof (".f.f.f.f.f.f.f.f.f.f.f.f.f.f.f.f.ip6.arpa.")];
68*4b22b933Srs nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a;
69*4b22b933Srs
70*4b22b933Srs (void) memset(&qdata, 0, sizeof (struct mdns_querydata));
71*4b22b933Srs qdata.argp = argp;
72*4b22b933Srs argp->h_errno = 0;
73*4b22b933Srs
74*4b22b933Srs if ((argp->key.hostaddr.type != AF_INET6) ||
75*4b22b933Srs (argp->key.hostaddr.len != sizeof (*addr)))
76*4b22b933Srs return (NSS_NOTFOUND);
77*4b22b933Srs
78*4b22b933Srs /* LINTED E_BAD_PTR_CAST_ALIGN */
79*4b22b933Srs addr = (struct in6_addr *)(argp->key.hostaddr.addr);
80*4b22b933Srs
81*4b22b933Srs if (IN6_IS_ADDR_V4MAPPED(addr)) {
82*4b22b933Srs struct in_addr ipv4addr;
83*4b22b933Srs
84*4b22b933Srs IN6_V4MAPPED_TO_INADDR(addr, &ipv4addr);
85*4b22b933Srs if (inet_ntop(AF_INET, (void *) &ipv4addr.s_addr,
86*4b22b933Srs (void *)qdata.paddrbuf, sizeof (qdata.paddrbuf)) == NULL)
87*4b22b933Srs return (NSS_NOTFOUND);
88*4b22b933Srs qdata.af = AF_INET;
89*4b22b933Srs p = (uint8_t *)&ipv4addr.s_addr;
90*4b22b933Srs (void) snprintf(addrqryname, sizeof (addrqryname),
91*4b22b933Srs "%u.%u.%u.%u.in-addr.arpa.", p[3], p[2], p[1], p[0]);
92*4b22b933Srs } else {
93*4b22b933Srs if (inet_ntop(AF_INET6, (void *)addr,
94*4b22b933Srs (void *)qdata.paddrbuf,
95*4b22b933Srs sizeof (qdata.paddrbuf)) == NULL)
96*4b22b933Srs return (NSS_NOTFOUND);
97*4b22b933Srs qdata.af = AF_INET6;
98*4b22b933Srs chptr = addrqryname;
99*4b22b933Srs for (i = 0; i < 16; i++)
100*4b22b933Srs {
101*4b22b933Srs ch = ((char *)addr)[15-i];
102*4b22b933Srs chptr += snprintf(chptr, sizeof (addrqryname)-i*4,
103*4b22b933Srs "%X.%X.", ch&0x0f, (ch>>4)&0x0f);
104*4b22b933Srs }
105*4b22b933Srs (void) strlcpy(chptr, "ip6.arpa.", sizeof (addrqryname)-64);
106*4b22b933Srs }
107*4b22b933Srs
108*4b22b933Srs _nss_mdns_updatecfg(be);
109*4b22b933Srs return (_nss_mdns_querybyaddr(be, addrqryname, qdata.af, &qdata));
110*4b22b933Srs }
111*4b22b933Srs
112*4b22b933Srs /*ARGSUSED*/
113*4b22b933Srs static nss_status_t
_nss_mdns_getent(be,args)114*4b22b933Srs _nss_mdns_getent(be, args)
115*4b22b933Srs mdns_backend_ptr_t be;
116*4b22b933Srs void *args;
117*4b22b933Srs {
118*4b22b933Srs return (NSS_UNAVAIL);
119*4b22b933Srs }
120*4b22b933Srs
121*4b22b933Srs /*ARGSUSED*/
122*4b22b933Srs static nss_status_t
_nss_mdns_setent(be,dummy)123*4b22b933Srs _nss_mdns_setent(be, dummy)
124*4b22b933Srs mdns_backend_ptr_t be;
125*4b22b933Srs void *dummy;
126*4b22b933Srs {
127*4b22b933Srs return (NSS_UNAVAIL);
128*4b22b933Srs }
129*4b22b933Srs
130*4b22b933Srs /*ARGSUSED*/
131*4b22b933Srs static nss_status_t
_nss_mdns_endent(be,dummy)132*4b22b933Srs _nss_mdns_endent(be, dummy)
133*4b22b933Srs mdns_backend_ptr_t be;
134*4b22b933Srs void *dummy;
135*4b22b933Srs {
136*4b22b933Srs return (NSS_UNAVAIL);
137*4b22b933Srs }
138*4b22b933Srs
139*4b22b933Srs /*ARGSUSED*/
140*4b22b933Srs static nss_status_t
_nss_mdns_ipnodes_destr(be,dummy)141*4b22b933Srs _nss_mdns_ipnodes_destr(be, dummy)
142*4b22b933Srs mdns_backend_ptr_t be;
143*4b22b933Srs void *dummy;
144*4b22b933Srs {
145*4b22b933Srs _nss_mdns_destr(be);
146*4b22b933Srs return (NSS_SUCCESS);
147*4b22b933Srs }
148*4b22b933Srs
149*4b22b933Srs static mdns_backend_op_t ipnodes_ops[] = {
150*4b22b933Srs _nss_mdns_ipnodes_destr,
151*4b22b933Srs _nss_mdns_endent,
152*4b22b933Srs _nss_mdns_setent,
153*4b22b933Srs _nss_mdns_getent,
154*4b22b933Srs getbyname,
155*4b22b933Srs getbyaddr,
156*4b22b933Srs };
157*4b22b933Srs
158*4b22b933Srs /*ARGSUSED*/
159*4b22b933Srs nss_backend_t *
_nss_mdns_ipnodes_constr(dummy1,dummy2,dummy3)160*4b22b933Srs _nss_mdns_ipnodes_constr(dummy1, dummy2, dummy3)
161*4b22b933Srs const char *dummy1, *dummy2, *dummy3;
162*4b22b933Srs {
163*4b22b933Srs return (_nss_mdns_constr(ipnodes_ops,
164*4b22b933Srs sizeof (ipnodes_ops) / sizeof (ipnodes_ops[0])));
165*4b22b933Srs }
166*4b22b933Srs
167*4b22b933Srs /*ARGSUSED*/
168*4b22b933Srs nss_status_t
_nss_get_mdns_ipnodes_name(mdns_backend_ptr_t * be,void ** bufp,size_t * sizep)169*4b22b933Srs _nss_get_mdns_ipnodes_name(mdns_backend_ptr_t *be, void **bufp, size_t *sizep)
170*4b22b933Srs {
171*4b22b933Srs return (_nss_mdns_gethost_withttl(*bufp, *sizep, 1));
172*4b22b933Srs }
173