xref: /freebsd/crypto/heimdal/lib/gssapi/mech/gss_encapsulate_token.c (revision dd41de95a84d979615a2ef11df6850622bf6184e)
1 /*
2  * Copyright (c) 2006 Kungliga Tekniska Högskolan
3  * (Royal Institute of Technology, Stockholm, Sweden).
4  * All rights reserved.
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  *
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  *
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  * 3. Neither the name of the Institute nor the names of its contributors
18  *    may be used to endorse or promote products derived from this software
19  *    without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  */
33 
34 #include "mech_locl.h"
35 
36 GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
37 gss_encapsulate_token(gss_const_buffer_t input_token,
38 		      gss_const_OID oid,
39 		      gss_buffer_t output_token)
40 {
41     GSSAPIContextToken ct;
42     int ret;
43     size_t size;
44 
45     ret = der_get_oid (oid->elements, oid->length, &ct.thisMech, &size);
46     if (ret) {
47 	_mg_buffer_zero(output_token);
48 	return GSS_S_FAILURE;
49     }
50 
51     ct.innerContextToken.data = input_token->value;
52     ct.innerContextToken.length = input_token->length;
53 
54     ASN1_MALLOC_ENCODE(GSSAPIContextToken,
55 		       output_token->value, output_token->length,
56 		       &ct, &size, ret);
57     der_free_oid(&ct.thisMech);
58     if (ret) {
59 	_mg_buffer_zero(output_token);
60 	return GSS_S_FAILURE;
61     }
62     if (output_token->length != size)
63 	abort();
64 
65     return GSS_S_COMPLETE;
66 }
67