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[FreeBSD/releng/10.0.git] / crypto / heimdal / lib / kadm5 / chpass_s.c
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
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
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
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
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 == HDB_ERR_NOENTRY)
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 }