127 lines
4.1 KiB
C
127 lines
4.1 KiB
C
/*
|
|
* Copyright (c) 1987, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
|
|
* Portions Copyright (c) 1996-1999 by Internet Software Consortium.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
|
|
* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
static const char sccsid[] = "@(#)herror.c 8.1 (Berkeley) 6/4/93";
|
|
static const char rcsid[] = "$Id: herror.c,v 1.3.18.1 2005/04/27 05:01:09 sra Exp $";
|
|
#endif /* LIBC_SCCS and not lint */
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "port_before.h"
|
|
|
|
#include "namespace.h"
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/uio.h>
|
|
|
|
#include <netinet/in.h>
|
|
#include <arpa/nameser.h>
|
|
|
|
#include <netdb.h>
|
|
#include <resolv.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include "un-namespace.h"
|
|
|
|
#include "port_after.h"
|
|
|
|
const char *h_errlist[] = {
|
|
"Resolver Error 0 (no error)",
|
|
"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 */
|
|
};
|
|
const int h_nerr = { sizeof h_errlist / sizeof h_errlist[0] };
|
|
|
|
#undef h_errno
|
|
int h_errno;
|
|
|
|
/*%
|
|
* herror --
|
|
* print the error indicated by the h_errno value.
|
|
*/
|
|
void
|
|
herror(const char *s) {
|
|
struct iovec iov[4], *v = iov;
|
|
char *t;
|
|
|
|
if (s != NULL && *s != '\0') {
|
|
DE_CONST(s, t);
|
|
v->iov_base = t;
|
|
v->iov_len = strlen(t);
|
|
v++;
|
|
DE_CONST(": ", t);
|
|
v->iov_base = t;
|
|
v->iov_len = 2;
|
|
v++;
|
|
}
|
|
DE_CONST(hstrerror(*__h_errno()), t);
|
|
v->iov_base = t;
|
|
v->iov_len = strlen(v->iov_base);
|
|
v++;
|
|
DE_CONST("\n", t);
|
|
v->iov_base = t;
|
|
v->iov_len = 1;
|
|
_writev(STDERR_FILENO, iov, (v - iov) + 1);
|
|
}
|
|
|
|
/*%
|
|
* hstrerror --
|
|
* return the string associated with a given "host" errno value.
|
|
*/
|
|
const char *
|
|
hstrerror(int err) {
|
|
if (err < 0)
|
|
return ("Resolver internal error");
|
|
else if (err < h_nerr)
|
|
return (h_errlist[err]);
|
|
return ("Unknown resolver error");
|
|
}
|
|
|
|
/*! \file */
|