1 /*
2 * Copyright (c) 1997-2006 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 "kadm5_locl.h"
35
36 RCSID("$Id$");
37
38 static kadm5_ret_t
change(void * server_handle,krb5_principal princ,const char * password,int cond)39 change(void *server_handle,
40 krb5_principal princ,
41 const char *password,
42 int cond)
43 {
44 kadm5_server_context *context = server_handle;
45 hdb_entry_ex ent;
46 kadm5_ret_t ret;
47 Key *keys;
48 size_t num_keys;
49 int existsp = 0;
50
51 memset(&ent, 0, sizeof(ent));
52 ret = context->db->hdb_open(context->context, context->db, O_RDWR, 0);
53 if(ret)
54 return ret;
55
56 ret = context->db->hdb_fetch_kvno(context->context, context->db, princ,
57 HDB_F_DECRYPT|HDB_F_GET_ANY|HDB_F_ADMIN_DATA, 0, &ent);
58 if(ret)
59 goto out;
60
61 ret = hdb_add_current_keys_to_history(context->context, &ent.entry);
62 if (ret)
63 goto out;
64
65 if (context->db->hdb_capability_flags & HDB_CAP_F_HANDLE_PASSWORDS) {
66 ret = context->db->hdb_password(context->context, context->db,
67 &ent, password, cond);
68 if (ret)
69 goto out2;
70 } else {
71
72 num_keys = ent.entry.keys.len;
73 keys = ent.entry.keys.val;
74
75 ent.entry.keys.len = 0;
76 ent.entry.keys.val = NULL;
77
78 ret = _kadm5_set_keys(context, &ent.entry, password);
79 if(ret) {
80 _kadm5_free_keys (context->context, num_keys, keys);
81 goto out2;
82 }
83
84 if (cond)
85 existsp = _kadm5_exists_keys (ent.entry.keys.val,
86 ent.entry.keys.len,
87 keys, num_keys);
88 _kadm5_free_keys (context->context, num_keys, keys);
89
90 if (existsp) {
91 ret = KADM5_PASS_REUSE;
92 krb5_set_error_message(context->context, ret,
93 "Password reuse forbidden");
94 goto out2;
95 }
96
97 ret = hdb_seal_keys(context->context, context->db, &ent.entry);
98 if (ret)
99 goto out2;
100 }
101 ent.entry.kvno++;
102
103 ret = _kadm5_set_modifier(context, &ent.entry);
104 if(ret)
105 goto out2;
106
107 ret = _kadm5_bump_pw_expire(context, &ent.entry);
108 if (ret)
109 goto out2;
110
111 ret = context->db->hdb_store(context->context, context->db,
112 HDB_F_REPLACE, &ent);
113 if (ret)
114 goto out2;
115
116 kadm5_log_modify (context,
117 &ent.entry,
118 KADM5_PRINCIPAL | KADM5_MOD_NAME | KADM5_MOD_TIME |
119 KADM5_KEY_DATA | KADM5_KVNO | KADM5_PW_EXPIRATION |
120 KADM5_TL_DATA);
121
122 out2:
123 hdb_free_entry(context->context, &ent);
124 out:
125 context->db->hdb_close(context->context, context->db);
126 return _kadm5_error_code(ret);
127 }
128
129
130
131 /*
132 * change the password of `princ' to `password' if it's not already that.
133 */
134
135 kadm5_ret_t
kadm5_s_chpass_principal_cond(void * server_handle,krb5_principal princ,const char * password)136 kadm5_s_chpass_principal_cond(void *server_handle,
137 krb5_principal princ,
138 const char *password)
139 {
140 return change (server_handle, princ, password, 1);
141 }
142
143 /*
144 * change the password of `princ' to `password'
145 */
146
147 kadm5_ret_t
kadm5_s_chpass_principal(void * server_handle,krb5_principal princ,const char * password)148 kadm5_s_chpass_principal(void *server_handle,
149 krb5_principal princ,
150 const char *password)
151 {
152 return change (server_handle, princ, password, 0);
153 }
154
155 /*
156 * change keys for `princ' to `keys'
157 */
158
159 kadm5_ret_t
kadm5_s_chpass_principal_with_key(void * server_handle,krb5_principal princ,int n_key_data,krb5_key_data * key_data)160 kadm5_s_chpass_principal_with_key(void *server_handle,
161 krb5_principal princ,
162 int n_key_data,
163 krb5_key_data *key_data)
164 {
165 kadm5_server_context *context = server_handle;
166 hdb_entry_ex ent;
167 kadm5_ret_t ret;
168
169 memset(&ent, 0, sizeof(ent));
170 ret = context->db->hdb_open(context->context, context->db, O_RDWR, 0);
171 if(ret)
172 return ret;
173 ret = context->db->hdb_fetch_kvno(context->context, context->db, princ, 0,
174 HDB_F_GET_ANY|HDB_F_ADMIN_DATA, &ent);
175 if(ret)
176 goto out;
177 ret = hdb_add_current_keys_to_history(context->context, &ent.entry);
178 if (ret)
179 goto out2;
180 ret = _kadm5_set_keys2(context, &ent.entry, n_key_data, key_data);
181 if(ret)
182 goto out2;
183 ent.entry.kvno++;
184 ret = _kadm5_set_modifier(context, &ent.entry);
185 if(ret)
186 goto out2;
187 ret = _kadm5_bump_pw_expire(context, &ent.entry);
188 if (ret)
189 goto out2;
190
191 ret = hdb_seal_keys(context->context, context->db, &ent.entry);
192 if (ret)
193 goto out2;
194
195 ret = context->db->hdb_store(context->context, context->db,
196 HDB_F_REPLACE, &ent);
197 if (ret)
198 goto out2;
199
200 kadm5_log_modify (context,
201 &ent.entry,
202 KADM5_PRINCIPAL | KADM5_MOD_NAME | KADM5_MOD_TIME |
203 KADM5_KEY_DATA | KADM5_KVNO | KADM5_PW_EXPIRATION |
204 KADM5_TL_DATA);
205
206 out2:
207 hdb_free_entry(context->context, &ent);
208 out:
209 context->db->hdb_close(context->context, context->db);
210 return _kadm5_error_code(ret);
211 }
212