lib/libgss/g_unseal.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
 */

/*
 *  glue routine gss_unseal
 */

#include <mechglueP.h>
#include "gssapiP_generic.h"

OM_uint32
gss_unseal(minor_status,
        context_handle,
        input_message_buffer,
        output_message_buffer,
        conf_state,
        qop_state)

OM_uint32 *     minor_status;
gss_ctx_id_t        context_handle;
gss_buffer_t        input_message_buffer;
gss_buffer_t        output_message_buffer;
int *           conf_state;
int *           qop_state;

{
    OM_uint32       status;
    gss_union_ctx_id_t  ctx;
    gss_mechanism       mech;

    if (minor_status != NULL)
        *minor_status = 0;

    if (output_message_buffer != GSS_C_NO_BUFFER) {
        output_message_buffer->length = 0;
        output_message_buffer->value = NULL;
    }

    if (minor_status == NULL)
        return (GSS_S_CALL_INACCESSIBLE_WRITE);

    if (context_handle == GSS_C_NO_CONTEXT)
        return (GSS_S_CALL_INACCESSIBLE_READ | GSS_S_NO_CONTEXT);

    if (input_message_buffer == GSS_C_NO_BUFFER ||
        GSS_EMPTY_BUFFER(input_message_buffer))
        return (GSS_S_CALL_INACCESSIBLE_READ);

    if (output_message_buffer == GSS_C_NO_BUFFER)
        return (GSS_S_CALL_INACCESSIBLE_WRITE);

    /*
     * select the approprate underlying mechanism routine and
     * call it.
     */

    ctx = (gss_union_ctx_id_t) context_handle;
    mech = __gss_get_mechanism(ctx->mech_type);

    if (mech) {
        if (mech->gss_unseal) {
            status = mech->gss_unseal(
                        mech->context,
                        minor_status,
                        ctx->internal_ctx_id,
                        input_message_buffer,
                        output_message_buffer,
                        conf_state,
                        qop_state);
            if (status != GSS_S_COMPLETE)
                map_error(minor_status, mech);
        } else
            status = GSS_S_UNAVAILABLE;

        return (status);
    }

    return (GSS_S_BAD_MECH);
}

OM_uint32
gss_unwrap(minor_status,
        context_handle,
        input_message_buffer,
        output_message_buffer,
        conf_state,
        qop_state)

OM_uint32 *     minor_status;
const gss_ctx_id_t  context_handle;
const gss_buffer_t  input_message_buffer;
gss_buffer_t        output_message_buffer;
int *           conf_state;
gss_qop_t *     qop_state;

{
    return (gss_unseal(minor_status, (gss_ctx_id_t)context_handle,
            (gss_buffer_t)input_message_buffer,
            output_message_buffer, conf_state, (int *) qop_state));
}