1 /* $NetBSD: chpass_s.c,v 1.1.1.2 2014/04/24 12:45:48 pettai Exp $ */
2
3 /*
4 * Copyright (c) 1997-2006 Kungliga Tekniska Högskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 #include "kadm5_locl.h"
37
38 __RCSID("NetBSD");
39
40 static kadm5_ret_t
change(void * server_handle,krb5_principal princ,const char * password,int cond)41 change(void *server_handle,
42 krb5_principal princ,
43 const char *password,
44 int cond)
45 {
46 kadm5_server_context *context = server_handle;
47 hdb_entry_ex ent;
48 kadm5_ret_t ret;
49 Key *keys;
50 size_t num_keys;
51 int existsp = 0;
52
53 memset(&ent, 0, sizeof(ent));
54 ret = context->db->hdb_open(context->context, context->db, O_RDWR, 0);
55 if(ret)
56 return ret;
57
58 ret = context->db->hdb_fetch_kvno(context->context, context->db, princ,
59 HDB_F_DECRYPT|HDB_F_GET_ANY|HDB_F_ADMIN_DATA, 0, &ent);
60 if(ret)
61 goto out;
62
63 if (context->db->hdb_capability_flags & HDB_CAP_F_HANDLE_PASSWORDS) {
64 ret = context->db->hdb_password(context->context, context->db,
65 &ent, password, cond);
66 if (ret)
67 goto out2;
68 } else {
69
70 num_keys = ent.entry.keys.len;
71 keys = ent.entry.keys.val;
72
73 ent.entry.keys.len = 0;
74 ent.entry.keys.val = NULL;
75
76 ret = _kadm5_set_keys(context, &ent.entry, password);
77 if(ret) {
78 _kadm5_free_keys (context->context, num_keys, keys);
79 goto out2;
80 }
81
82 if (cond)
83 existsp = _kadm5_exists_keys (ent.entry.keys.val,
84 ent.entry.keys.len,
85 keys, num_keys);
86 _kadm5_free_keys (context->context, num_keys, keys);
87
88 if (existsp) {
89 ret = KADM5_PASS_REUSE;
90 krb5_set_error_message(context->context, ret,
91 "Password reuse forbidden");
92 goto out2;
93 }
94
95 ret = hdb_seal_keys(context->context, context->db, &ent.entry);
96 if (ret)
97 goto out2;
98 }
99 ent.entry.kvno++;
100
101 ret = _kadm5_set_modifier(context, &ent.entry);
102 if(ret)
103 goto out2;
104
105 ret = _kadm5_bump_pw_expire(context, &ent.entry);
106 if (ret)
107 goto out2;
108
109 ret = context->db->hdb_store(context->context, context->db,
110 HDB_F_REPLACE, &ent);
111 if (ret)
112 goto out2;
113
114 kadm5_log_modify (context,
115 &ent.entry,
116 KADM5_PRINCIPAL | KADM5_MOD_NAME | KADM5_MOD_TIME |
117 KADM5_KEY_DATA | KADM5_KVNO | KADM5_PW_EXPIRATION |
118 KADM5_TL_DATA);
119
120 out2:
121 hdb_free_entry(context->context, &ent);
122 out:
123 context->db->hdb_close(context->context, context->db);
124 return _kadm5_error_code(ret);
125 }
126
127
128
129 /*
130 * change the password of `princ' to `password' if it's not already that.
131 */
132
133 kadm5_ret_t
kadm5_s_chpass_principal_cond(void * server_handle,krb5_principal princ,const char * password)134 kadm5_s_chpass_principal_cond(void *server_handle,
135 krb5_principal princ,
136 const char *password)
137 {
138 return change (server_handle, princ, password, 1);
139 }
140
141 /*
142 * change the password of `princ' to `password'
143 */
144
145 kadm5_ret_t
kadm5_s_chpass_principal(void * server_handle,krb5_principal princ,const char * password)146 kadm5_s_chpass_principal(void *server_handle,
147 krb5_principal princ,
148 const char *password)
149 {
150 return change (server_handle, princ, password, 0);
151 }
152
153 /*
154 * change keys for `princ' to `keys'
155 */
156
157 kadm5_ret_t
kadm5_s_chpass_principal_with_key(void * server_handle,krb5_principal princ,int n_key_data,krb5_key_data * key_data)158 kadm5_s_chpass_principal_with_key(void *server_handle,
159 krb5_principal princ,
160 int n_key_data,
161 krb5_key_data *key_data)
162 {
163 kadm5_server_context *context = server_handle;
164 hdb_entry_ex ent;
165 kadm5_ret_t ret;
166
167 memset(&ent, 0, sizeof(ent));
168 ret = context->db->hdb_open(context->context, context->db, O_RDWR, 0);
169 if(ret)
170 return ret;
171 ret = context->db->hdb_fetch_kvno(context->context, context->db, princ, 0,
172 HDB_F_GET_ANY|HDB_F_ADMIN_DATA, &ent);
173 if(ret == HDB_ERR_NOENTRY)
174 goto out;
175 ret = _kadm5_set_keys2(context, &ent.entry, n_key_data, key_data);
176 if(ret)
177 goto out2;
178 ent.entry.kvno++;
179 ret = _kadm5_set_modifier(context, &ent.entry);
180 if(ret)
181 goto out2;
182 ret = _kadm5_bump_pw_expire(context, &ent.entry);
183 if (ret)
184 goto out2;
185
186 ret = hdb_seal_keys(context->context, context->db, &ent.entry);
187 if (ret)
188 goto out2;
189
190 ret = context->db->hdb_store(context->context, context->db,
191 HDB_F_REPLACE, &ent);
192 if (ret)
193 goto out2;
194
195 kadm5_log_modify (context,
196 &ent.entry,
197 KADM5_PRINCIPAL | KADM5_MOD_NAME | KADM5_MOD_TIME |
198 KADM5_KEY_DATA | KADM5_KVNO | KADM5_PW_EXPIRATION |
199 KADM5_TL_DATA);
200
201 out2:
202 hdb_free_entry(context->context, &ent);
203 out:
204 context->db->hdb_close(context->context, context->db);
205 return _kadm5_error_code(ret);
206 }
207