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1325 |
phoenix |
/*
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* Copyright (c) 1987 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that: (1) source distributions retain this entire copyright
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* notice and comment, and (2) distributions including binaries display
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* the following acknowledgement: ``This product includes software
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* developed by the University of California, Berkeley and its contributors''
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* in the documentation or other materials provided with the distribution
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* and in all advertising materials mentioning features or use of this
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* software. Neither the name of the University nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#define __FORCE_GLIBC
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#include <features.h>
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#include <stdio.h>
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#include <string.h>
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#include <netdb.h>
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static const char *error_msg = "Resolver error";
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static const char *const h_errlist[] = {
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"Error 0",
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"Unknown host", /* 1 HOST_NOT_FOUND */
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"Host name lookup failure", /* 2 TRY_AGAIN */
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"Unknown server error", /* 3 NO_RECOVERY */
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"No address associated with name", /* 4 NO_ADDRESS */
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};
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static const int h_nerr = { sizeof(h_errlist)/sizeof(h_errlist[0]) };
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/*
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* herror -- print the error indicated by the h_errno value.
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*/
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void herror(const char *s)
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{
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static const char colon_space[] = ": ";
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const char *p;
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const char *c;
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c = colon_space;
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if (!s || !*s) {
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c += 2;
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}
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p = error_msg;
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if ((h_errno >= 0) && (h_errno < h_nerr)) {
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p = h_errlist[h_errno];
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}
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fprintf(stderr, "%s%s%s\n", s, c, p);
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}
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const char *hstrerror(int err)
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{
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if (err < 0) {
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return(error_msg);
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} else if (err < h_nerr) {
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return(h_errlist[err]);
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}
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return(error_msg);
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}
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