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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 /*
     22  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 
     26 /*
     27  *  glue routine for gss_delete_sec_context
     28  */
     29 
     30 #include <mechglueP.h>
     31 #include <stdio.h>
     32 #ifdef HAVE_STDLIB_H
     33 #include <stdlib.h>
     34 #endif
     35 
     36 static OM_uint32
     37 val_del_sec_ctx_args(
     38 	OM_uint32 *minor_status,
     39 	gss_ctx_id_t *context_handle,
     40 	gss_buffer_t output_token)
     41 {
     42 
     43 	/* Initialize outputs. */
     44 
     45 	if (minor_status != NULL)
     46 		*minor_status = 0;
     47 
     48 	if (output_token != GSS_C_NO_BUFFER) {
     49 		output_token->length = 0;
     50 		output_token->value = NULL;
     51 	}
     52 
     53 	/* Validate arguments. */
     54 
     55 	if (minor_status == NULL)
     56 		return (GSS_S_CALL_INACCESSIBLE_WRITE);
     57 
     58 	if (context_handle == NULL || *context_handle == GSS_C_NO_CONTEXT)
     59 		return (GSS_S_CALL_INACCESSIBLE_WRITE | GSS_S_NO_CONTEXT);
     60 
     61 	return (GSS_S_COMPLETE);
     62 }
     63 
     64 OM_uint32
     65 gss_delete_sec_context(minor_status,
     66 				context_handle,
     67 				output_token)
     68 
     69 OM_uint32 *			minor_status;
     70 gss_ctx_id_t *			context_handle;
     71 gss_buffer_t			output_token;
     72 
     73 {
     74 	OM_uint32		status;
     75 	gss_union_ctx_id_t	ctx;
     76 	gss_mechanism		mech;
     77 
     78 	status = val_del_sec_ctx_args(minor_status,
     79 				context_handle,
     80 				output_token);
     81 	if (status != GSS_S_COMPLETE)
     82 		return (status);
     83 
     84 	/*
     85 	 * select the approprate underlying mechanism routine and
     86 	 * call it.
     87 	 */
     88 
     89 	ctx = (gss_union_ctx_id_t) *context_handle;
     90 	mech = __gss_get_mechanism(ctx->mech_type);
     91 
     92 	if (mech) {
     93 
     94 		if (mech->gss_delete_sec_context)
     95 			status = mech->gss_delete_sec_context(mech->context,
     96 							minor_status,
     97 							&ctx->internal_ctx_id,
     98 							output_token);
     99 		else
    100 			status = GSS_S_UNAVAILABLE;
    101 
    102 		/* now free up the space for the union context structure */
    103 		free(ctx->mech_type->elements);
    104 		free(ctx->mech_type);
    105 		free(*context_handle);
    106 		*context_handle = NULL;
    107 
    108 		return (status);
    109 	}
    110 
    111 	return (GSS_S_BAD_MECH);
    112 }
    113