1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
5 * Authors: Doug Rabson <dfr@rabson.org>
6 * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
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/param.h>
31 #include <sys/jail.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
43 OM_uint32
gss_delete_sec_context(OM_uint32 * minor_status,gss_ctx_id_t * context_handle,gss_buffer_t output_token)44 gss_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 KGSS_CURVNET_SET_QUIET(KGSS_TD_TO_VNET(curthread));
56 if (!KGSS_VNET(kgss_gssd_handle)) {
57 KGSS_CURVNET_RESTORE();
58 return (GSS_S_FAILURE);
59 }
60 KGSS_CURVNET_RESTORE();
61
62 if (*context_handle) {
63 ctx = *context_handle;
64
65 /*
66 * If we are past the context establishment phase, let
67 * the in-kernel code do the delete, otherwise
68 * userland needs to deal with it.
69 */
70 if (ctx->handle) {
71 args.ctx = ctx->handle;
72 cl = kgss_gssd_client();
73 if (cl == NULL)
74 return (GSS_S_FAILURE);
75
76 bzero(&res, sizeof(res));
77 stat = gssd_delete_sec_context_1(&args, &res, cl);
78 CLNT_RELEASE(cl);
79 if (stat != RPC_SUCCESS) {
80 *minor_status = stat;
81 return (GSS_S_FAILURE);
82 }
83
84 if (output_token)
85 kgss_copy_buffer(&res.output_token,
86 output_token);
87 xdr_free((xdrproc_t) xdr_delete_sec_context_res, &res);
88
89 kgss_delete_context(ctx, NULL);
90 } else {
91 kgss_delete_context(ctx, output_token);
92 }
93 *context_handle = NULL;
94 } else {
95 if (output_token) {
96 output_token->length = 0;
97 output_token->value = NULL;
98 }
99 }
100
101 return (GSS_S_COMPLETE);
102 }
103