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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/kgssapi/gss_unwrap.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/malloc.h>

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#include <sys/mbuf.h>

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#include <kgssapi/gssapi.h>

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#include <kgssapi/gssapi_impl.h>

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#include "kgss_if.h"

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OM_uint32

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gss_unwrap(OM_uint32 *minor_status,

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    const gss_ctx_id_t ctx,

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    const gss_buffer_t input_message_buffer,

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    gss_buffer_t output_message_buffer,

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    int *conf_state,

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    gss_qop_t *qop_state)

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{

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	OM_uint32 maj_stat;

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	struct mbuf *m;

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	if (!ctx) {

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		*minor_status = 0;

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		return (GSS_S_NO_CONTEXT);

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	}

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	MGET(m, M_WAITOK, MT_DATA);

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	if (input_message_buffer->length > MLEN)

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		MCLGET(m, M_WAITOK);

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	m_append(m, input_message_buffer->length, input_message_buffer->value);

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	maj_stat = KGSS_UNWRAP(ctx, minor_status, &m, conf_state, qop_state);

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	/*

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	 * On success, m is the wrapped message, on failure, m is

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	 * freed.

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	 */

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	if (maj_stat == GSS_S_COMPLETE) {

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		output_message_buffer->length = m_length(m, NULL);

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		output_message_buffer->value =

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			malloc(output_message_buffer->length,

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			    M_GSSAPI, M_WAITOK);

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		m_copydata(m, 0, output_message_buffer->length,

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		    output_message_buffer->value);

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		m_freem(m);

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	}

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	return (maj_stat);

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}

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OM_uint32

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gss_unwrap_mbuf(OM_uint32 *minor_status,

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    const gss_ctx_id_t ctx,

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    struct mbuf **mp,

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    int *conf_state,

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    gss_qop_t *qop_state)

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{

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	if (!ctx) {

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		*minor_status = 0;

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		return (GSS_S_NO_CONTEXT);

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	}

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	return (KGSS_UNWRAP(ctx, minor_status, mp, conf_state, qop_state));

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}

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