1/*
2 * Copyright (c) 1995 - 1999 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * 3. Neither the name of the Institute nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include <config.h>
35
36#ifndef HAVE_HSTRERROR
37
38#if (defined(SunOS) && (SunOS >= 50))
39#define hstrerror broken_proto
40#endif
41#include "roken.h"
42#if (defined(SunOS) && (SunOS >= 50))
43#undef hstrerror
44#endif
45
46#if !(defined(HAVE_H_ERRLIST) && defined(HAVE_H_NERR))
47static const char *const h_errlist[] = {
48    "Resolver Error 0 (no error)",
49    "Unknown host",		/* 1 HOST_NOT_FOUND */
50    "Host name lookup failure",	/* 2 TRY_AGAIN */
51    "Unknown server error",	/* 3 NO_RECOVERY */
52    "No address associated with name", /* 4 NO_ADDRESS */
53};
54
55static
56const
57int h_nerr = { sizeof h_errlist / sizeof h_errlist[0] };
58#else
59
60#if !HAVE_DECL_H_ERRLIST
61extern const char *h_errlist[];
62extern int h_nerr;
63#endif
64
65#endif
66
67ROKEN_LIB_FUNCTION const char * ROKEN_LIB_CALL
68hstrerror(int herr)
69{
70    if (0 <= herr && herr < h_nerr)
71	return h_errlist[herr];
72    else if(herr == -17)
73	return "unknown error";
74    else
75	return "Error number out of range (hstrerror)";
76}
77
78#endif
79