/* #ident  "@(#)gss_unseal.c 1.10     95/08/07 SMI" */

/*
 * Copyright 1996 by Sun Microsystems, Inc.
 *
 * Permission to use, copy, modify, distribute, and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appears in all copies and
 * that both that copyright notice and this permission notice appear in
 * supporting documentation, and that the name of Sun Microsystems not be used
 * in advertising or publicity pertaining to distribution of the software
 * without specific, written prior permission. Sun Microsystems makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 * SUN MICROSYSTEMS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL SUN MICROSYSTEMS BE LIABLE FOR ANY SPECIAL, 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.
 */

/*
 *  glue routine gss_unseal
 */

#include "mglueP.h"

OM_uint32 KRB5_CALLCONV
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;

    GSS_INITIALIZE;

    if (context_handle == GSS_C_NO_CONTEXT)
	return GSS_S_NO_CONTEXT;

    /*
     * select the approprate underlying mechanism routine and
     * call it.  (If mech only supports V2, then substitute the
     * unwrap function.)
     */

    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(
				      minor_status,
				      ctx->internal_ctx_id,
				      input_message_buffer,
				      output_message_buffer,
				      conf_state,
				      qop_state);
	else if (mech->gss_unwrap)
	    status = mech->gss_unwrap(
				      minor_status,
				      ctx->internal_ctx_id,
				      input_message_buffer,
				      output_message_buffer,
				      conf_state,
				      qop_state);
	else
	    status = GSS_S_BAD_BINDINGS;

	return(status);
    }

    return(GSS_S_NO_CONTEXT);
}
