1*4b22b933Srs200217 /*
2*4b22b933Srs200217 * CDDL HEADER START
3*4b22b933Srs200217 *
4*4b22b933Srs200217 * The contents of this file are subject to the terms of the
5*4b22b933Srs200217 * Common Development and Distribution License (the "License").
6*4b22b933Srs200217 * You may not use this file except in compliance with the License.
7*4b22b933Srs200217 *
8*4b22b933Srs200217 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*4b22b933Srs200217 * or http://www.opensolaris.org/os/licensing.
10*4b22b933Srs200217 * See the License for the specific language governing permissions
11*4b22b933Srs200217 * and limitations under the License.
12*4b22b933Srs200217 *
13*4b22b933Srs200217 * When distributing Covered Code, include this CDDL HEADER in each
14*4b22b933Srs200217 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*4b22b933Srs200217 * If applicable, add the following below this CDDL HEADER, with the
16*4b22b933Srs200217 * fields enclosed by brackets "[]" replaced with your own identifying
17*4b22b933Srs200217 * information: Portions Copyright [yyyy] [name of copyright owner]
18*4b22b933Srs200217 *
19*4b22b933Srs200217 * CDDL HEADER END
20*4b22b933Srs200217 */
21*4b22b933Srs200217
22*4b22b933Srs200217 /*
23*4b22b933Srs200217 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
24*4b22b933Srs200217 * Use is subject to license terms.
25*4b22b933Srs200217 */
26*4b22b933Srs200217
27*4b22b933Srs200217 #include "mdns_common.h"
28*4b22b933Srs200217
29*4b22b933Srs200217 /*
30*4b22b933Srs200217 * gethostby* functions for the hosts database. The hosts
31*4b22b933Srs200217 * database stores IPv4 addresses only.
32*4b22b933Srs200217 * mDNS query functions to perform the host lookup
33*4b22b933Srs200217 * are in mdns/common/mdns_common.c file.
34*4b22b933Srs200217 * _nss_mdns_hosts_constr is called to initialize
35*4b22b933Srs200217 * the nsswitch backend data structures.
36*4b22b933Srs200217 */
37*4b22b933Srs200217
38*4b22b933Srs200217 static nss_status_t
getbyname(be,a)39*4b22b933Srs200217 getbyname(be, a)
40*4b22b933Srs200217 mdns_backend_ptr_t be;
41*4b22b933Srs200217 void *a;
42*4b22b933Srs200217 {
43*4b22b933Srs200217 struct mdns_querydata qdata;
44*4b22b933Srs200217 char *hname;
45*4b22b933Srs200217
46*4b22b933Srs200217 (void) memset(&qdata, 0, sizeof (struct mdns_querydata));
47*4b22b933Srs200217
48*4b22b933Srs200217 qdata.argp = (nss_XbyY_args_t *)a;
49*4b22b933Srs200217 hname = (char *)qdata.argp->key.name;
50*4b22b933Srs200217
51*4b22b933Srs200217 _nss_mdns_updatecfg(be);
52*4b22b933Srs200217 return (_nss_mdns_querybyname(be, hname, AF_INET, &qdata));
53*4b22b933Srs200217 }
54*4b22b933Srs200217
55*4b22b933Srs200217 /*ARGSUSED*/
56*4b22b933Srs200217 static nss_status_t
getbyaddr(be,a)57*4b22b933Srs200217 getbyaddr(be, a)
58*4b22b933Srs200217 mdns_backend_ptr_t be;
59*4b22b933Srs200217 void *a;
60*4b22b933Srs200217 {
61*4b22b933Srs200217 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a;
62*4b22b933Srs200217 struct in_addr addr;
63*4b22b933Srs200217 struct mdns_querydata qdata;
64*4b22b933Srs200217 char buffer[sizeof ("255.255.255.255.in-addr.arpa.")];
65*4b22b933Srs200217 uint8_t *p;
66*4b22b933Srs200217
67*4b22b933Srs200217 (void) memset(&qdata, 0, sizeof (struct mdns_querydata));
68*4b22b933Srs200217 qdata.argp = argp;
69*4b22b933Srs200217
70*4b22b933Srs200217 argp->h_errno = 0;
71*4b22b933Srs200217 if ((argp->key.hostaddr.type != AF_INET) ||
72*4b22b933Srs200217 (argp->key.hostaddr.len != sizeof (addr)))
73*4b22b933Srs200217 return (NSS_NOTFOUND);
74*4b22b933Srs200217
75*4b22b933Srs200217 (void) memcpy(&addr, argp->key.hostaddr.addr, sizeof (addr));
76*4b22b933Srs200217
77*4b22b933Srs200217 if (inet_ntop(AF_INET, (void *) &addr.s_addr,
78*4b22b933Srs200217 (void *)qdata.paddrbuf,
79*4b22b933Srs200217 sizeof (qdata.paddrbuf)) == NULL)
80*4b22b933Srs200217 return (NSS_NOTFOUND);
81*4b22b933Srs200217
82*4b22b933Srs200217 qdata.af = AF_INET;
83*4b22b933Srs200217 p = (uint8_t *)&addr.s_addr;
84*4b22b933Srs200217 (void) snprintf(buffer, sizeof (buffer),
85*4b22b933Srs200217 "%u.%u.%u.%u.in-addr.arpa.", p[3], p[2], p[1], p[0]);
86*4b22b933Srs200217
87*4b22b933Srs200217 _nss_mdns_updatecfg(be);
88*4b22b933Srs200217 return (_nss_mdns_querybyaddr(be, buffer, qdata.af, &qdata));
89*4b22b933Srs200217 }
90*4b22b933Srs200217
91*4b22b933Srs200217 /*ARGSUSED*/
92*4b22b933Srs200217 static nss_status_t
_nss_mdns_getent(be,args)93*4b22b933Srs200217 _nss_mdns_getent(be, args)
94*4b22b933Srs200217 mdns_backend_ptr_t be;
95*4b22b933Srs200217 void *args;
96*4b22b933Srs200217 {
97*4b22b933Srs200217 return (NSS_UNAVAIL);
98*4b22b933Srs200217 }
99*4b22b933Srs200217
100*4b22b933Srs200217 /*ARGSUSED*/
101*4b22b933Srs200217 static nss_status_t
_nss_mdns_setent(be,dummy)102*4b22b933Srs200217 _nss_mdns_setent(be, dummy)
103*4b22b933Srs200217 mdns_backend_ptr_t be;
104*4b22b933Srs200217 void *dummy;
105*4b22b933Srs200217 {
106*4b22b933Srs200217 return (NSS_UNAVAIL);
107*4b22b933Srs200217 }
108*4b22b933Srs200217
109*4b22b933Srs200217 /*ARGSUSED*/
110*4b22b933Srs200217 static nss_status_t
_nss_mdns_endent(be,dummy)111*4b22b933Srs200217 _nss_mdns_endent(be, dummy)
112*4b22b933Srs200217 mdns_backend_ptr_t be;
113*4b22b933Srs200217 void *dummy;
114*4b22b933Srs200217 {
115*4b22b933Srs200217 return (NSS_UNAVAIL);
116*4b22b933Srs200217 }
117*4b22b933Srs200217
118*4b22b933Srs200217 /*ARGSUSED*/
119*4b22b933Srs200217 static nss_status_t
_nss_mdns_hosts_destr(be,dummy)120*4b22b933Srs200217 _nss_mdns_hosts_destr(be, dummy)
121*4b22b933Srs200217 mdns_backend_ptr_t be;
122*4b22b933Srs200217 void *dummy;
123*4b22b933Srs200217 {
124*4b22b933Srs200217 _nss_mdns_destr(be);
125*4b22b933Srs200217 return (NSS_SUCCESS);
126*4b22b933Srs200217 }
127*4b22b933Srs200217
128*4b22b933Srs200217 static mdns_backend_op_t host_ops[] = {
129*4b22b933Srs200217 _nss_mdns_hosts_destr,
130*4b22b933Srs200217 _nss_mdns_endent,
131*4b22b933Srs200217 _nss_mdns_setent,
132*4b22b933Srs200217 _nss_mdns_getent,
133*4b22b933Srs200217 getbyname,
134*4b22b933Srs200217 getbyaddr,
135*4b22b933Srs200217 };
136*4b22b933Srs200217
137*4b22b933Srs200217 /*ARGSUSED*/
138*4b22b933Srs200217 nss_backend_t *
_nss_mdns_hosts_constr(dummy1,dummy2,dummy3)139*4b22b933Srs200217 _nss_mdns_hosts_constr(dummy1, dummy2, dummy3)
140*4b22b933Srs200217 const char *dummy1, *dummy2, *dummy3;
141*4b22b933Srs200217 {
142*4b22b933Srs200217 return (_nss_mdns_constr(host_ops,
143*4b22b933Srs200217 sizeof (host_ops) / sizeof (host_ops[0])));
144*4b22b933Srs200217 }
145*4b22b933Srs200217
146*4b22b933Srs200217 /*ARGSUSED*/
147*4b22b933Srs200217 nss_status_t
_nss_get_mdns_hosts_name(mdns_backend_ptr_t * be,void ** bufp,size_t * sizep)148*4b22b933Srs200217 _nss_get_mdns_hosts_name(mdns_backend_ptr_t *be, void **bufp, size_t *sizep)
149*4b22b933Srs200217 {
150*4b22b933Srs200217 return (_nss_mdns_gethost_withttl(*bufp, *sizep, 0));
151*4b22b933Srs200217 }
152