gss_delete_sec_context.c revision 184588 
1/*-
2 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
3 * Authors: Doug Rabson <dfr@rabson.org>
4 * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD: head/sys/kgssapi/gss_delete_sec_context.c 184588 2008-11-03 10:38:00Z dfr $");
30
31#include <sys/param.h>
32#include <sys/kernel.h>
33#include <sys/kobj.h>
34#include <sys/malloc.h>
35
36#include <kgssapi/gssapi.h>
37#include <kgssapi/gssapi_impl.h>
38
39#include "gssd.h"
40
41OM_uint32
42gss_delete_sec_context(OM_uint32 *minor_status, gss_ctx_id_t *context_handle,
43	gss_buffer_t output_token)
44{
45	struct delete_sec_context_res res;
46	struct delete_sec_context_args args;
47	enum clnt_stat stat;
48	gss_ctx_id_t ctx;
49
50	if (!kgss_gssd_handle)
51		return (GSS_S_FAILURE);
52
53	if (*context_handle) {
54		ctx = *context_handle;
55
56		/*
57		 * If we are past the context establishment phase, let
58		 * the in-kernel code do the delete, otherwise
59		 * userland needs to deal with it.
60		 */
61		if (ctx->handle) {
62			args.ctx = ctx->handle;
63
64			bzero(&res, sizeof(res));
65			stat = gssd_delete_sec_context_1(&args, &res, kgss_gssd_handle);
66			if (stat != RPC_SUCCESS) {
67				*minor_status = stat;
68				return (GSS_S_FAILURE);
69			}
70
71			if (output_token)
72				kgss_copy_buffer(&res.output_token,
73				    output_token);
74			xdr_free((xdrproc_t) xdr_delete_sec_context_res, &res);
75
76			kgss_delete_context(ctx, NULL);
77		} else {
78			kgss_delete_context(ctx, output_token);
79		}
80		*context_handle = NULL;
81	} else {
82		if (output_token) {
83			output_token->length = 0;
84			output_token->value = NULL;
85		}
86	}
87
88	*minor_status = 0;
89
90	return (GSS_S_COMPLETE);
91}
92