1 /*-
2 * Copyright (c) 2005 Doug Rabson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: src/lib/libgssapi/gss_import_sec_context.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
27 */
28
29 #include "mech_locl.h"
30 RCSID("$Id: gss_import_sec_context.c,v 1.2 2006/06/28 09:00:25 lha Exp $");
31
32 OM_uint32
gss_import_sec_context(OM_uint32 * minor_status,const gss_buffer_t interprocess_token,gss_ctx_id_t * context_handle)33 gss_import_sec_context(OM_uint32 *minor_status,
34 const gss_buffer_t interprocess_token,
35 gss_ctx_id_t *context_handle)
36 {
37 OM_uint32 major_status;
38 gssapi_mech_interface m;
39 struct _gss_context *ctx;
40 gss_OID_desc mech_oid;
41 gss_buffer_desc buf;
42 unsigned char *p;
43 size_t len;
44
45 *minor_status = 0;
46 *context_handle = 0;
47
48 /*
49 * We added an oid to the front of the token in
50 * gss_export_sec_context.
51 */
52 p = interprocess_token->value;
53 len = interprocess_token->length;
54 if (len < 2)
55 return (GSS_S_DEFECTIVE_TOKEN);
56 mech_oid.length = (p[0] << 8) | p[1];
57 if (len < mech_oid.length + 2)
58 return (GSS_S_DEFECTIVE_TOKEN);
59 mech_oid.elements = p + 2;
60 buf.length = len - 2 - mech_oid.length;
61 buf.value = p + 2 + mech_oid.length;
62
63 m = __gss_get_mechanism(&mech_oid);
64 if (!m)
65 return (GSS_S_DEFECTIVE_TOKEN);
66
67 ctx = malloc(sizeof(struct _gss_context));
68 if (!ctx) {
69 *minor_status = ENOMEM;
70 return (GSS_S_FAILURE);
71 }
72 ctx->gc_mech = m;
73 major_status = m->gm_import_sec_context(minor_status,
74 &buf, &ctx->gc_ctx);
75 if (major_status != GSS_S_COMPLETE) {
76 free(ctx);
77 } else {
78 *context_handle = (gss_ctx_id_t) ctx;
79 }
80
81 return (major_status);
82 }
83