xref: /freebsd/crypto/heimdal/lib/gssapi/mech/gss_delete_sec_context.c (revision e0c4386e7e71d93b0edc0c8fa156263fc4a8b0b6)
1 /*-
2  * Copyright (c) 2005 Doug Rabson
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  *	$FreeBSD: src/lib/libgssapi/gss_delete_sec_context.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
27  */
28 
29 #include "mech_locl.h"
30 
31 GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
32 gss_delete_sec_context(OM_uint32 *minor_status,
33     gss_ctx_id_t *context_handle,
34     gss_buffer_t output_token)
35 {
36 	OM_uint32 major_status;
37 	struct _gss_context *ctx = (struct _gss_context *) *context_handle;
38 
39 	if (output_token)
40 	    _mg_buffer_zero(output_token);
41 
42 	*minor_status = 0;
43 	if (ctx) {
44 		/*
45 		 * If we have an implementation ctx, delete it,
46 		 * otherwise fake an empty token.
47 		 */
48 		if (ctx->gc_ctx) {
49 			major_status = ctx->gc_mech->gm_delete_sec_context(
50 				minor_status, &ctx->gc_ctx, output_token);
51 		}
52 		free(ctx);
53 		*context_handle = GSS_C_NO_CONTEXT;
54 	}
55 
56 	return (GSS_S_COMPLETE);
57 }
58