1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
5 * Authors: Doug Rabson <[email protected]>
6 * Developed with Red Inc: Alfred Perlstein <[email protected]>
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <sys/cdefs.h>
31 #include <sys/param.h>
32 #include <sys/jail.h>
33 #include <sys/kernel.h>
34 #include <sys/kobj.h>
35 #include <sys/lock.h>
36 #include <sys/malloc.h>
37 #include <sys/mutex.h>
38
39 #include <kgssapi/gssapi.h>
40 #include <kgssapi/gssapi_impl.h>
41
42 #include "gssd.h"
43
44 OM_uint32
gss_delete_sec_context(OM_uint32 * minor_status,gss_ctx_id_t * context_handle,gss_buffer_t output_token)45 gss_delete_sec_context(OM_uint32 *minor_status, gss_ctx_id_t *context_handle,
46 gss_buffer_t output_token)
47 {
48 struct delete_sec_context_res res;
49 struct delete_sec_context_args args;
50 enum clnt_stat stat;
51 gss_ctx_id_t ctx;
52 CLIENT *cl;
53
54 *minor_status = 0;
55
56 KGSS_CURVNET_SET_QUIET(KGSS_TD_TO_VNET(curthread));
57 if (!KGSS_VNET(kgss_gssd_handle)) {
58 KGSS_CURVNET_RESTORE();
59 return (GSS_S_FAILURE);
60 }
61 KGSS_CURVNET_RESTORE();
62
63 if (*context_handle) {
64 ctx = *context_handle;
65
66 /*
67 * If we are past the context establishment phase, let
68 * the in-kernel code do the delete, otherwise
69 * userland needs to deal with it.
70 */
71 if (ctx->handle) {
72 args.ctx = ctx->handle;
73 cl = kgss_gssd_client();
74 if (cl == NULL)
75 return (GSS_S_FAILURE);
76
77 bzero(&res, sizeof(res));
78 stat = gssd_delete_sec_context_1(&args, &res, cl);
79 CLNT_RELEASE(cl);
80 if (stat != RPC_SUCCESS) {
81 *minor_status = stat;
82 return (GSS_S_FAILURE);
83 }
84
85 if (output_token)
86 kgss_copy_buffer(&res.output_token,
87 output_token);
88 xdr_free((xdrproc_t) xdr_delete_sec_context_res, &res);
89
90 kgss_delete_context(ctx, NULL);
91 } else {
92 kgss_delete_context(ctx, output_token);
93 }
94 *context_handle = NULL;
95 } else {
96 if (output_token) {
97 output_token->length = 0;
98 output_token->value = NULL;
99 }
100 }
101
102 return (GSS_S_COMPLETE);
103 }
104