source: heimdal/trunk/lib/kadm5/set_keys.c

Last change on this file was 1, checked in by Paul Smedley, 10 years ago

Initial commit of Heimdal 1.5.3
File size: 6.8 KB
Line 
1/*
2 * Copyright (c) 1997 - 2001, 2003 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 "kadm5_locl.h"
35
36RCSID("$Id$");
37
38/*
39 * Set the keys of `ent' to the string-to-key of `password'
40 */
41
42kadm5_ret_t
43_kadm5_set_keys(kadm5_server_context *context,
44 hdb_entry *ent,
45 const char *password)
46{
47 Key *keys;
48 size_t num_keys;
49 kadm5_ret_t ret;
50
51 ret = hdb_generate_key_set_password(context->context,
52 ent->principal,
53 password, &keys, &num_keys);
54 if (ret)
55 return ret;
56
57 _kadm5_free_keys (context->context, ent->keys.len, ent->keys.val);
58 ent->keys.val = keys;
59 ent->keys.len = num_keys;
60
61 hdb_entry_set_pw_change_time(context->context, ent, 0);
62
63 if (krb5_config_get_bool_default(context->context, NULL, FALSE,
64 "kadmin", "save-password", NULL))
65 {
66 ret = hdb_entry_set_password(context->context, context->db,
67 ent, password);
68 if (ret)
69 return ret;
70 }
71
72 return 0;
73}
74
75/*
76 * Set the keys of `ent' to (`n_key_data', `key_data')
77 */
78
79kadm5_ret_t
80_kadm5_set_keys2(kadm5_server_context *context,
81 hdb_entry *ent,
82 int16_t n_key_data,
83 krb5_key_data *key_data)
84{
85 krb5_error_code ret;
86 int i;
87 unsigned len;
88 Key *keys;
89
90 len = n_key_data;
91 keys = malloc (len * sizeof(*keys));
92 if (keys == NULL && len != 0)
93 return ENOMEM;
94
95 _kadm5_init_keys (keys, len);
96
97 for(i = 0; i < n_key_data; i++) {
98 keys[i].mkvno = NULL;
99 keys[i].key.keytype = key_data[i].key_data_type[0];
100 ret = krb5_data_copy(&keys[i].key.keyvalue,
101 key_data[i].key_data_contents[0],
102 key_data[i].key_data_length[0]);
103 if(ret)
104 goto out;
105 if(key_data[i].key_data_ver == 2) {
106 Salt *salt;
107
108 salt = calloc(1, sizeof(*salt));
109 if(salt == NULL) {
110 ret = ENOMEM;
111 goto out;
112 }
113 keys[i].salt = salt;
114 salt->type = key_data[i].key_data_type[1];
115 krb5_data_copy(&salt->salt,
116 key_data[i].key_data_contents[1],
117 key_data[i].key_data_length[1]);
118 } else
119 keys[i].salt = NULL;
120 }
121 _kadm5_free_keys (context->context, ent->keys.len, ent->keys.val);
122 ent->keys.len = len;
123 ent->keys.val = keys;
124
125 hdb_entry_set_pw_change_time(context->context, ent, 0);
126 hdb_entry_clear_password(context->context, ent);
127
128 return 0;
129 out:
130 _kadm5_free_keys (context->context, len, keys);
131 return ret;
132}
133
134/*
135 * Set the keys of `ent' to `n_keys, keys'
136 */
137
138kadm5_ret_t
139_kadm5_set_keys3(kadm5_server_context *context,
140 hdb_entry *ent,
141 int n_keys,
142 krb5_keyblock *keyblocks)
143{
144 krb5_error_code ret;
145 int i;
146 unsigned len;
147 Key *keys;
148
149 len = n_keys;
150 keys = malloc (len * sizeof(*keys));
151 if (keys == NULL && len != 0)
152 return ENOMEM;
153
154 _kadm5_init_keys (keys, len);
155
156 for(i = 0; i < n_keys; i++) {
157 keys[i].mkvno = NULL;
158 ret = krb5_copy_keyblock_contents (context->context,
159 &keyblocks[i],
160 &keys[i].key);
161 if(ret)
162 goto out;
163 keys[i].salt = NULL;
164 }
165 _kadm5_free_keys (context->context, ent->keys.len, ent->keys.val);
166 ent->keys.len = len;
167 ent->keys.val = keys;
168
169 hdb_entry_set_pw_change_time(context->context, ent, 0);
170 hdb_entry_clear_password(context->context, ent);
171
172 return 0;
173 out:
174 _kadm5_free_keys (context->context, len, keys);
175 return ret;
176}
177
178/*
179 *
180 */
181
182static int
183is_des_key_p(int keytype)
184{
185 return keytype == ETYPE_DES_CBC_CRC ||
186 keytype == ETYPE_DES_CBC_MD4 ||
187 keytype == ETYPE_DES_CBC_MD5;
188}
189
190
191/*
192 * Set the keys of `ent' to random keys and return them in `n_keys'
193 * and `new_keys'.
194 */
195
196kadm5_ret_t
197_kadm5_set_keys_randomly (kadm5_server_context *context,
198 hdb_entry *ent,
199 krb5_keyblock **new_keys,
200 int *n_keys)
201{
202 krb5_keyblock *kblock = NULL;
203 kadm5_ret_t ret = 0;
204 int des_keyblock;
205 size_t i, num_keys;
206 Key *keys;
207
208 ret = hdb_generate_key_set(context->context, ent->principal,
209 &keys, &num_keys, 1);
210 if (ret)
211 return ret;
212
213 kblock = malloc(num_keys * sizeof(kblock[0]));
214 if (kblock == NULL) {
215 ret = ENOMEM;
216 _kadm5_free_keys (context->context, num_keys, keys);
217 return ret;
218 }
219 memset(kblock, 0, num_keys * sizeof(kblock[0]));
220
221 des_keyblock = -1;
222 for (i = 0; i < num_keys; i++) {
223
224 /*
225 * To make sure all des keys are the the same we generate only
226 * the first one and then copy key to all other des keys.
227 */
228
229 if (des_keyblock != -1 && is_des_key_p(keys[i].key.keytype)) {
230 ret = krb5_copy_keyblock_contents (context->context,
231 &kblock[des_keyblock],
232 &kblock[i]);
233 if (ret)
234 goto out;
235 kblock[i].keytype = keys[i].key.keytype;
236 } else {
237 ret = krb5_generate_random_keyblock (context->context,
238 keys[i].key.keytype,
239 &kblock[i]);
240 if (ret)
241 goto out;
242
243 if (is_des_key_p(keys[i].key.keytype))
244 des_keyblock = i;
245 }
246
247 ret = krb5_copy_keyblock_contents (context->context,
248 &kblock[i],
249 &keys[i].key);
250 if (ret)
251 goto out;
252 }
253
254out:
255 if(ret) {
256 for (i = 0; i < num_keys; ++i)
257 krb5_free_keyblock_contents (context->context, &kblock[i]);
258 free(kblock);
259 _kadm5_free_keys (context->context, num_keys, keys);
260 return ret;
261 }
262
263 _kadm5_free_keys (context->context, ent->keys.len, ent->keys.val);
264 ent->keys.val = keys;
265 ent->keys.len = num_keys;
266 *new_keys = kblock;
267 *n_keys = num_keys;
268
269 hdb_entry_set_pw_change_time(context->context, ent, 0);
270 hdb_entry_clear_password(context->context, ent);
271
272 return 0;
273}
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