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