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
29 #include <gssapi/gssapi.h>
30 #include <stdlib.h>
31 #include <string.h>
32 #include <errno.h>
33
34 #include "mech_switch.h"
35 #include "context.h"
36 #include "utils.h"
37
38 OM_uint32
gss_export_sec_context(OM_uint32 * minor_status,gss_ctx_id_t * context_handle,gss_buffer_t interprocess_token)39 gss_export_sec_context(OM_uint32 *minor_status,
40 gss_ctx_id_t *context_handle,
41 gss_buffer_t interprocess_token)
42 {
43 OM_uint32 major_status;
44 struct _gss_context *ctx = (struct _gss_context *) *context_handle;
45 struct _gss_mech_switch *m = ctx->gc_mech;
46 gss_buffer_desc buf;
47
48 _gss_buffer_zero(interprocess_token);
49
50 major_status = m->gm_export_sec_context(minor_status,
51 &ctx->gc_ctx, &buf);
52
53 if (major_status == GSS_S_COMPLETE) {
54 unsigned char *p;
55
56 free(ctx);
57 *context_handle = GSS_C_NO_CONTEXT;
58 interprocess_token->length = buf.length
59 + 2 + m->gm_mech_oid.length;
60 interprocess_token->value = malloc(interprocess_token->length);
61 if (!interprocess_token->value) {
62 /*
63 * We are in trouble here - the context is
64 * already gone. This is allowed as long as we
65 * set the caller's context_handle to
66 * GSS_C_NO_CONTEXT, which we did above.
67 * Return GSS_S_FAILURE.
68 */
69 _gss_buffer_zero(interprocess_token);
70 *minor_status = ENOMEM;
71 return (GSS_S_FAILURE);
72 }
73 p = interprocess_token->value;
74 p[0] = m->gm_mech_oid.length >> 8;
75 p[1] = m->gm_mech_oid.length;
76 memcpy(p + 2, m->gm_mech_oid.elements, m->gm_mech_oid.length);
77 memcpy(p + 2 + m->gm_mech_oid.length, buf.value, buf.length);
78 gss_release_buffer(minor_status, &buf);
79 } else {
80 _gss_mg_error(m, major_status, *minor_status);
81 }
82
83 return (major_status);
84 }
85