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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/kgssapi/gss_ip_to_dns.c
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/*-

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 * SPDX-License-Identifier: BSD-2-Clause

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 *

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 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/

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 * Authors: Doug Rabson <[email protected]>

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 * Developed with Red Inc: Alfred Perlstein <[email protected]>

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 *

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 * Redistribution and use in source and binary forms, with or without

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 * modification, are permitted provided that the following conditions

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 * are met:

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 * 1. Redistributions of source code must retain the above copyright

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 *    notice, this list of conditions and the following disclaimer.

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 * 2. Redistributions in binary form must reproduce the above copyright

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 *    notice, this list of conditions and the following disclaimer in the

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 *    documentation and/or other materials provided with the distribution.

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 *

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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND

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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

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 * SUCH DAMAGE.

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 */

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#include <sys/param.h>

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#include <sys/kernel.h>

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#include <sys/kobj.h>

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#include <sys/lock.h>

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#include <sys/malloc.h>

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#include <sys/mutex.h>

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#include <kgssapi/gssapi.h>

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#include <kgssapi/gssapi_impl.h>

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#include "gssd.h"

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OM_uint32

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gss_ip_to_dns(OM_uint32 *minor_status,

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    char *ip_addr,

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    char *dns_name)

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{

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	struct ip_to_dns_res res;

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	struct ip_to_dns_args args;

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	enum clnt_stat stat;

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	CLIENT *cl;

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	*minor_status = 0;

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	cl = kgss_gssd_client();

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	if (cl == NULL)

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		return (GSS_S_FAILURE);

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	args.ip_addr.ip_addr_len = strlen(ip_addr);

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	args.ip_addr.ip_addr_val = mem_alloc(args.ip_addr.ip_addr_len);

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	memcpy(args.ip_addr.ip_addr_val, ip_addr, args.ip_addr.ip_addr_len);

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	bzero(&res, sizeof(res));

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	stat = gssd_ip_to_dns_1(&args, &res, cl);

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	CLNT_RELEASE(cl);

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	if (stat != RPC_SUCCESS) {

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		*minor_status = stat;

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		return (GSS_S_FAILURE);

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	}

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	if (res.major_status != GSS_S_COMPLETE) {

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		*minor_status = res.minor_status;

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		return (res.major_status);

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	}

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	if (res.dns_name.dns_name_len == 0 ||

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	    res.dns_name.dns_name_len >= NI_MAXHOST) {

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		*minor_status = 0;

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		return (GSS_S_FAILURE);

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	}

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	memcpy(dns_name, res.dns_name.dns_name_val, res.dns_name.dns_name_len);

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	dns_name[res.dns_name.dns_name_len] = '\0';

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	return (GSS_S_COMPLETE);

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}

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