1*ebfedea0SLionel Sambuc /* $NetBSD: getipnodebyaddr.c,v 1.1.1.1 2011/04/13 18:15:41 elric Exp $ */
2*ebfedea0SLionel Sambuc
3*ebfedea0SLionel Sambuc /*
4*ebfedea0SLionel Sambuc * Copyright (c) 1999 Kungliga Tekniska Högskolan
5*ebfedea0SLionel Sambuc * (Royal Institute of Technology, Stockholm, Sweden).
6*ebfedea0SLionel Sambuc * All rights reserved.
7*ebfedea0SLionel Sambuc *
8*ebfedea0SLionel Sambuc * Redistribution and use in source and binary forms, with or without
9*ebfedea0SLionel Sambuc * modification, are permitted provided that the following conditions
10*ebfedea0SLionel Sambuc * are met:
11*ebfedea0SLionel Sambuc *
12*ebfedea0SLionel Sambuc * 1. Redistributions of source code must retain the above copyright
13*ebfedea0SLionel Sambuc * notice, this list of conditions and the following disclaimer.
14*ebfedea0SLionel Sambuc *
15*ebfedea0SLionel Sambuc * 2. Redistributions in binary form must reproduce the above copyright
16*ebfedea0SLionel Sambuc * notice, this list of conditions and the following disclaimer in the
17*ebfedea0SLionel Sambuc * documentation and/or other materials provided with the distribution.
18*ebfedea0SLionel Sambuc *
19*ebfedea0SLionel Sambuc * 3. Neither the name of the Institute nor the names of its contributors
20*ebfedea0SLionel Sambuc * may be used to endorse or promote products derived from this software
21*ebfedea0SLionel Sambuc * without specific prior written permission.
22*ebfedea0SLionel Sambuc *
23*ebfedea0SLionel Sambuc * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24*ebfedea0SLionel Sambuc * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25*ebfedea0SLionel Sambuc * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26*ebfedea0SLionel Sambuc * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27*ebfedea0SLionel Sambuc * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28*ebfedea0SLionel Sambuc * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29*ebfedea0SLionel Sambuc * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30*ebfedea0SLionel Sambuc * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31*ebfedea0SLionel Sambuc * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32*ebfedea0SLionel Sambuc * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33*ebfedea0SLionel Sambuc * SUCH DAMAGE.
34*ebfedea0SLionel Sambuc */
35*ebfedea0SLionel Sambuc
36*ebfedea0SLionel Sambuc #include <config.h>
37*ebfedea0SLionel Sambuc
38*ebfedea0SLionel Sambuc #include <krb5/roken.h>
39*ebfedea0SLionel Sambuc
40*ebfedea0SLionel Sambuc /*
41*ebfedea0SLionel Sambuc * lookup `src, len' (address family `af') in DNS and return a pointer
42*ebfedea0SLionel Sambuc * to a malloced struct hostent or NULL.
43*ebfedea0SLionel Sambuc */
44*ebfedea0SLionel Sambuc
45*ebfedea0SLionel Sambuc ROKEN_LIB_FUNCTION struct hostent * ROKEN_LIB_CALL
getipnodebyaddr(const void * src,size_t len,int af,int * error_num)46*ebfedea0SLionel Sambuc getipnodebyaddr (const void *src, size_t len, int af, int *error_num)
47*ebfedea0SLionel Sambuc {
48*ebfedea0SLionel Sambuc struct hostent *tmp;
49*ebfedea0SLionel Sambuc
50*ebfedea0SLionel Sambuc tmp = gethostbyaddr (src, len, af);
51*ebfedea0SLionel Sambuc if (tmp == NULL) {
52*ebfedea0SLionel Sambuc switch (h_errno) {
53*ebfedea0SLionel Sambuc case HOST_NOT_FOUND :
54*ebfedea0SLionel Sambuc case TRY_AGAIN :
55*ebfedea0SLionel Sambuc case NO_RECOVERY :
56*ebfedea0SLionel Sambuc *error_num = h_errno;
57*ebfedea0SLionel Sambuc break;
58*ebfedea0SLionel Sambuc case NO_DATA :
59*ebfedea0SLionel Sambuc *error_num = NO_ADDRESS;
60*ebfedea0SLionel Sambuc break;
61*ebfedea0SLionel Sambuc default :
62*ebfedea0SLionel Sambuc *error_num = NO_RECOVERY;
63*ebfedea0SLionel Sambuc break;
64*ebfedea0SLionel Sambuc }
65*ebfedea0SLionel Sambuc return NULL;
66*ebfedea0SLionel Sambuc }
67*ebfedea0SLionel Sambuc tmp = copyhostent (tmp);
68*ebfedea0SLionel Sambuc if (tmp == NULL) {
69*ebfedea0SLionel Sambuc *error_num = TRY_AGAIN;
70*ebfedea0SLionel Sambuc return NULL;
71*ebfedea0SLionel Sambuc }
72*ebfedea0SLionel Sambuc return tmp;
73*ebfedea0SLionel Sambuc }
74