xref: /freebsd/lib/libgssapi/gss_delete_sec_context.c (revision 7ef62cebc2f965b0f640263e179276928885e33d)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2005 Doug Rabson
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  *
28  *	$FreeBSD$
29  */
30 
31 #include <gssapi/gssapi.h>
32 #include <stdlib.h>
33 #include <errno.h>
34 
35 #include "mech_switch.h"
36 #include "context.h"
37 #include "utils.h"
38 
39 OM_uint32
40 gss_delete_sec_context(OM_uint32 *minor_status,
41     gss_ctx_id_t *context_handle,
42     gss_buffer_t output_token)
43 {
44 	struct _gss_context *ctx = (struct _gss_context *) *context_handle;
45 
46 	if (output_token)
47 		_gss_buffer_zero(output_token);
48 
49 	*minor_status = 0;
50 	if (ctx) {
51 		/*
52 		 * If we have an implementation ctx, delete it,
53 		 * otherwise fake an empty token.
54 		 */
55 		if (ctx->gc_ctx) {
56 			(void) ctx->gc_mech->gm_delete_sec_context(
57 				minor_status, &ctx->gc_ctx, output_token);
58 		}
59 		free(ctx);
60 		*context_handle = GSS_C_NO_CONTEXT;
61 	}
62 
63 	return (GSS_S_COMPLETE);
64 }
65