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