diff options
Diffstat (limited to 'libc/netbsd/resolv/herror.c')
| -rw-r--r-- | libc/netbsd/resolv/herror.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/libc/netbsd/resolv/herror.c b/libc/netbsd/resolv/herror.c new file mode 100644 index 0000000..e90e641 --- /dev/null +++ b/libc/netbsd/resolv/herror.c @@ -0,0 +1,133 @@ +/* $NetBSD: herror.c,v 1.4 2004/05/23 05:09:52 christos Exp $ */ + +/* + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 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. + */ + +#include <sys/cdefs.h> +#if defined(LIBC_SCCS) && !defined(lint) +#ifdef notdef +static const char sccsid[] = "@(#)herror.c 8.1 (Berkeley) 6/4/93"; +static const char rcsid[] = "Id: herror.c,v 1.2.206.1 2004/03/09 08:33:54 marka Exp"; +#else +__RCSID("$NetBSD: herror.c,v 1.4 2004/05/23 05:09:52 christos Exp $"); +#endif +#endif /* LIBC_SCCS and not lint */ + +#include <sys/types.h> +#include <sys/param.h> +#include <sys/uio.h> + +#include <netinet/in.h> +#include "arpa_nameser.h" + +#include <netdb.h> +#ifdef ANDROID_CHANGES +#include "resolv_private.h" +#else +#include <resolv.h> +#endif +#include <string.h> +#include <unistd.h> + +#ifndef DE_CONST +#define DE_CONST(c,v) v = ((c) ? \ + strchr((const void *)(c), *(const char *)(const void *)(c)) : NULL) +#endif + +const char * const 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] }; + +/* + * 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"); +} |