155682Smarkm/* 2233294Sstas * Copyright (c) 1999 Kungliga Tekniska H��gskolan 355682Smarkm * (Royal Institute of Technology, Stockholm, Sweden). 455682Smarkm * All rights reserved. 5233294Sstas * 655682Smarkm * Redistribution and use in source and binary forms, with or without 755682Smarkm * modification, are permitted provided that the following conditions 855682Smarkm * are met: 9233294Sstas * 1055682Smarkm * 1. Redistributions of source code must retain the above copyright 1155682Smarkm * notice, this list of conditions and the following disclaimer. 12233294Sstas * 1355682Smarkm * 2. Redistributions in binary form must reproduce the above copyright 1455682Smarkm * notice, this list of conditions and the following disclaimer in the 1555682Smarkm * documentation and/or other materials provided with the distribution. 16233294Sstas * 1755682Smarkm * 3. Neither the name of the Institute nor the names of its contributors 1855682Smarkm * may be used to endorse or promote products derived from this software 1955682Smarkm * without specific prior written permission. 20233294Sstas * 2155682Smarkm * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 2255682Smarkm * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2355682Smarkm * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2455682Smarkm * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 2555682Smarkm * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2655682Smarkm * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2755682Smarkm * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2855682Smarkm * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2955682Smarkm * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3055682Smarkm * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3155682Smarkm * SUCH DAMAGE. 3255682Smarkm */ 3355682Smarkm 3455682Smarkm#include <config.h> 3555682Smarkm 3655682Smarkm#include "roken.h" 3755682Smarkm 3855682Smarkm/* 3955682Smarkm * lookup `src, len' (address family `af') in DNS and return a pointer 4055682Smarkm * to a malloced struct hostent or NULL. 4155682Smarkm */ 4255682Smarkm 43233294SstasROKEN_LIB_FUNCTION struct hostent * ROKEN_LIB_CALL 4455682Smarkmgetipnodebyaddr (const void *src, size_t len, int af, int *error_num) 4555682Smarkm{ 4655682Smarkm struct hostent *tmp; 4755682Smarkm 4855682Smarkm tmp = gethostbyaddr (src, len, af); 4955682Smarkm if (tmp == NULL) { 5055682Smarkm switch (h_errno) { 5155682Smarkm case HOST_NOT_FOUND : 5255682Smarkm case TRY_AGAIN : 5355682Smarkm case NO_RECOVERY : 5455682Smarkm *error_num = h_errno; 5555682Smarkm break; 5655682Smarkm case NO_DATA : 5755682Smarkm *error_num = NO_ADDRESS; 5855682Smarkm break; 5955682Smarkm default : 6055682Smarkm *error_num = NO_RECOVERY; 6155682Smarkm break; 6255682Smarkm } 6355682Smarkm return NULL; 6455682Smarkm } 6555682Smarkm tmp = copyhostent (tmp); 6655682Smarkm if (tmp == NULL) { 6755682Smarkm *error_num = TRY_AGAIN; 6855682Smarkm return NULL; 6955682Smarkm } 7055682Smarkm return tmp; 7155682Smarkm} 72