1/*
2 * Copyright (c) 2007 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 "kdc_locl.h"
35
36static krb5plugin_windc_ftable *windcft;
37static void *windcctx;
38
39/*
40 * Pick the first WINDC module that we find.
41 */
42
43krb5_error_code
44krb5_kdc_windc_init(krb5_context context)
45{
46    struct krb5_plugin *list = NULL, *e;
47    krb5_error_code ret;
48
49    ret = _krb5_plugin_find(context, PLUGIN_TYPE_DATA, "windc", &list);
50    if(ret != 0 || list == NULL)
51	return 0;
52
53    for (e = list; e != NULL; e = _krb5_plugin_get_next(e)) {
54
55	windcft = _krb5_plugin_get_symbol(e);
56	if (windcft->minor_version < KRB5_WINDC_PLUGIN_MINOR)
57	    continue;
58
59	(*windcft->init)(context, &windcctx);
60	break;
61    }
62    _krb5_plugin_free(list);
63    if (e == NULL) {
64	krb5_set_error_message(context, ENOENT, "Did not find any WINDC plugin");
65	windcft = NULL;
66	return ENOENT;
67    }
68
69    return 0;
70}
71
72
73krb5_error_code
74_kdc_pac_generate(krb5_context context,
75		  hdb_entry_ex *client,
76		  krb5_pac *pac)
77{
78    *pac = NULL;
79    if (windcft == NULL)
80	return 0;
81    return (windcft->pac_generate)(windcctx, context, client, pac);
82}
83
84krb5_error_code
85_kdc_pac_verify(krb5_context context,
86		const krb5_principal client_principal,
87		const krb5_principal delegated_proxy_principal,
88		hdb_entry_ex *client,
89		hdb_entry_ex *server,
90		hdb_entry_ex *krbtgt,
91		krb5_pac *pac,
92		int *verified)
93{
94    krb5_error_code ret;
95
96    if (windcft == NULL)
97	return 0;
98
99    ret = windcft->pac_verify(windcctx, context,
100			      client_principal,
101			      delegated_proxy_principal,
102			      client, server, krbtgt, pac);
103    if (ret == 0)
104	*verified = 1;
105    return ret;
106}
107
108krb5_error_code
109_kdc_check_access(krb5_context context,
110		  krb5_kdc_configuration *config,
111		  hdb_entry_ex *client_ex, const char *client_name,
112		  hdb_entry_ex *server_ex, const char *server_name,
113		  KDC_REQ *req,
114		  METHOD_DATA *method_data)
115{
116    if (windcft == NULL || windcft->client_access == NULL)
117	    return kdc_check_flags(context, config,
118				   client_ex, client_name,
119				   server_ex, server_name,
120				   req->msg_type == krb_as_req);
121
122    return (windcft->client_access)(windcctx,
123				    context, config,
124				    client_ex, client_name,
125				    server_ex, server_name,
126				    req, method_data);
127}
128