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
36 static krb5plugin_windc_ftable *windcft;
37 static void *windcctx;
38
39 /*
40 * Pick the first WINDC module that we find.
41 */
42
43 krb5_error_code
krb5_kdc_windc_init(krb5_context context)44 krb5_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
73 krb5_error_code
_kdc_pac_generate(krb5_context context,hdb_entry_ex * client,krb5_pac * pac)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
84 krb5_error_code
_kdc_pac_verify(krb5_context context,const krb5_principal client_principal,const krb5_principal delegated_proxy_principal,hdb_entry_ex * client,hdb_entry_ex * server,hdb_entry_ex * krbtgt,krb5_pac * pac,int * verified)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
108 krb5_error_code
_kdc_check_access(krb5_context context,krb5_kdc_configuration * config,hdb_entry_ex * client_ex,const char * client_name,hdb_entry_ex * server_ex,const char * server_name,KDC_REQ * req,krb5_data * e_data)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 krb5_data *e_data)
115 {
116 if (windcft == 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, e_data);
127 }
128