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 244370 2012-12-18 00:25:48Z rmacklem $");
30
31#include <sys/param.h>
32#include <sys/kernel.h>
33#include <sys/kobj.h>
34#include <sys/lock.h>
35#include <sys/malloc.h>
36#include <sys/mutex.h>
37
38#include <kgssapi/gssapi.h>
39#include <kgssapi/gssapi_impl.h>
40
41#include "gssd.h"
42
43OM_uint32
44gss_delete_sec_context(OM_uint32 *minor_status, gss_ctx_id_t *context_handle,
45 gss_buffer_t output_token)
46{
47 struct delete_sec_context_res res;
48 struct delete_sec_context_args args;
49 enum clnt_stat stat;
50 gss_ctx_id_t ctx;
51 CLIENT *cl;
52
53 *minor_status = 0;
54
55 if (!kgss_gssd_handle)
56 return (GSS_S_FAILURE);
57
58 if (*context_handle) {
59 ctx = *context_handle;
60
61 /*
62 * If we are past the context establishment phase, let
63 * the in-kernel code do the delete, otherwise
64 * userland needs to deal with it.
65 */
66 if (ctx->handle) {
67 args.ctx = ctx->handle;
68 cl = kgss_gssd_client();
69 if (cl == NULL)
70 return (GSS_S_FAILURE);
71
72 bzero(&res, sizeof(res));
73 stat = gssd_delete_sec_context_1(&args, &res, cl);
74 CLNT_RELEASE(cl);
75 if (stat != RPC_SUCCESS) {
76 *minor_status = stat;
77 return (GSS_S_FAILURE);
78 }
79
80 if (output_token)
81 kgss_copy_buffer(&res.output_token,
82 output_token);
83 xdr_free((xdrproc_t) xdr_delete_sec_context_res, &res);
84
85 kgss_delete_context(ctx, NULL);
86 } else {
87 kgss_delete_context(ctx, output_token);
88 }
89 *context_handle = NULL;
90 } else {
91 if (output_token) {
92 output_token->length = 0;
93 output_token->value = NULL;
94 }
95 }
96
97 return (GSS_S_COMPLETE);
98}