1/*	$NetBSD: compat.c,v 1.1.1.1 2011/04/13 18:14:44 elric Exp $	*/
2
3/*
4 * Copyright (c) 2003 - 2005 Kungliga Tekniska Högskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
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 *
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36#include "gsskrb5_locl.h"
37
38static krb5_error_code
39check_compat(OM_uint32 *minor_status,
40	     krb5_context context, krb5_const_principal name,
41	     const char *option, krb5_boolean *compat,
42	     krb5_boolean match_val)
43{
44    krb5_error_code ret = 0;
45    char **p, **q;
46    krb5_principal match;
47
48
49    p = krb5_config_get_strings(context, NULL, "gssapi",
50				option, NULL);
51    if(p == NULL)
52	return 0;
53
54    match = NULL;
55    for(q = p; *q; q++) {
56	ret = krb5_parse_name(context, *q, &match);
57	if (ret)
58	    break;
59
60	if (krb5_principal_match(context, name, match)) {
61	    *compat = match_val;
62	    break;
63	}
64
65	krb5_free_principal(context, match);
66	match = NULL;
67    }
68    if (match)
69	krb5_free_principal(context, match);
70    krb5_config_free_strings(p);
71
72    if (ret) {
73	if (minor_status)
74	    *minor_status = ret;
75	return GSS_S_FAILURE;
76    }
77
78    return 0;
79}
80
81/*
82 * ctx->ctx_id_mutex is assumed to be locked
83 */
84
85OM_uint32
86_gss_DES3_get_mic_compat(OM_uint32 *minor_status,
87			 gsskrb5_ctx ctx,
88			 krb5_context context)
89{
90    krb5_boolean use_compat = FALSE;
91    OM_uint32 ret;
92
93    if ((ctx->more_flags & COMPAT_OLD_DES3_SELECTED) == 0) {
94	ret = check_compat(minor_status, context, ctx->target,
95			   "broken_des3_mic", &use_compat, TRUE);
96	if (ret)
97	    return ret;
98	ret = check_compat(minor_status, context, ctx->target,
99			   "correct_des3_mic", &use_compat, FALSE);
100	if (ret)
101	    return ret;
102
103	if (use_compat)
104	    ctx->more_flags |= COMPAT_OLD_DES3;
105	ctx->more_flags |= COMPAT_OLD_DES3_SELECTED;
106    }
107    return 0;
108}
109
110#if 0
111OM_uint32
112gss_krb5_compat_des3_mic(OM_uint32 *minor_status, gss_ctx_id_t ctx, int on)
113{
114    *minor_status = 0;
115
116    HEIMDAL_MUTEX_lock(&ctx->ctx_id_mutex);
117    if (on) {
118	ctx->more_flags |= COMPAT_OLD_DES3;
119    } else {
120	ctx->more_flags &= ~COMPAT_OLD_DES3;
121    }
122    ctx->more_flags |= COMPAT_OLD_DES3_SELECTED;
123    HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex);
124
125    return 0;
126}
127#endif
128