hstrerror.c revision 55682
155682Smarkm/* 255682Smarkm * Copyright (c) 1995 - 1999 Kungliga Tekniska H�gskolan 355682Smarkm * (Royal Institute of Technology, Stockholm, Sweden). 455682Smarkm * All rights reserved. 555682Smarkm * 655682Smarkm * Redistribution and use in source and binary forms, with or without 755682Smarkm * modification, are permitted provided that the following conditions 855682Smarkm * are met: 955682Smarkm * 1055682Smarkm * 1. Redistributions of source code must retain the above copyright 1155682Smarkm * notice, this list of conditions and the following disclaimer. 1255682Smarkm * 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. 1655682Smarkm * 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. 2055682Smarkm * 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#ifdef HAVE_CONFIG_H 3555682Smarkm#include <config.h> 3655682SmarkmRCSID("$Id: hstrerror.c,v 1.23 1999/12/05 13:18:55 assar Exp $"); 3755682Smarkm#endif 3855682Smarkm 3955682Smarkm#ifndef HAVE_HSTRERROR 4055682Smarkm 4155682Smarkm#if (defined(SunOS) && (SunOS >= 50)) 4255682Smarkm#define hstrerror broken_proto 4355682Smarkm#endif 4455682Smarkm#include "roken.h" 4555682Smarkm#if (defined(SunOS) && (SunOS >= 50)) 4655682Smarkm#undef hstrerror 4755682Smarkm#endif 4855682Smarkm 4955682Smarkm#ifndef HAVE_H_ERRNO 5055682Smarkmint h_errno = -17; /* Some magic number */ 5155682Smarkm#endif 5255682Smarkm 5355682Smarkm#if !(defined(HAVE_H_ERRLIST) && defined(HAVE_H_NERR)) 5455682Smarkmstatic const char *const h_errlist[] = { 5555682Smarkm "Resolver Error 0 (no error)", 5655682Smarkm "Unknown host", /* 1 HOST_NOT_FOUND */ 5755682Smarkm "Host name lookup failure", /* 2 TRY_AGAIN */ 5855682Smarkm "Unknown server error", /* 3 NO_RECOVERY */ 5955682Smarkm "No address associated with name", /* 4 NO_ADDRESS */ 6055682Smarkm}; 6155682Smarkm 6255682Smarkmstatic 6355682Smarkmconst 6455682Smarkmint h_nerr = { sizeof h_errlist / sizeof h_errlist[0] }; 6555682Smarkm#else 6655682Smarkm 6755682Smarkm#ifndef HAVE_H_ERRLIST_DECLARATION 6855682Smarkmextern const char *h_errlist[]; 6955682Smarkmextern int h_nerr; 7055682Smarkm#endif 7155682Smarkm 7255682Smarkm#endif 7355682Smarkm 7455682Smarkmconst char * 7555682Smarkmhstrerror(int herr) 7655682Smarkm{ 7755682Smarkm if (0 <= herr && herr < h_nerr) 7855682Smarkm return h_errlist[herr]; 7955682Smarkm else if(herr == -17) 8055682Smarkm return "unknown error"; 8155682Smarkm else 8255682Smarkm return "Error number out of range (hstrerror)"; 8355682Smarkm} 8455682Smarkm 8555682Smarkm#endif 86