1 /*
2 * Copyright (c) 1997 - 2004 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 "kadmin_locl.h"
35 #include "kadmin-commands.h"
36
37 struct cpw_entry_data {
38 int random_key;
39 int random_password;
40 char *password;
41 krb5_key_data *key_data;
42 };
43
44 static int
set_random_key(krb5_principal principal)45 set_random_key (krb5_principal principal)
46 {
47 krb5_error_code ret;
48 int i;
49 krb5_keyblock *keys;
50 int num_keys;
51
52 ret = kadm5_randkey_principal(kadm_handle, principal, &keys, &num_keys);
53 if(ret)
54 return ret;
55 for(i = 0; i < num_keys; i++)
56 krb5_free_keyblock_contents(context, &keys[i]);
57 free(keys);
58 return 0;
59 }
60
61 static int
set_random_password(krb5_principal principal)62 set_random_password (krb5_principal principal)
63 {
64 krb5_error_code ret;
65 char pw[128];
66
67 random_password (pw, sizeof(pw));
68 ret = kadm5_chpass_principal(kadm_handle, principal, pw);
69 if (ret == 0) {
70 char *princ_name;
71
72 krb5_unparse_name(context, principal, &princ_name);
73
74 printf ("%s's password set to \"%s\"\n", princ_name, pw);
75 free (princ_name);
76 }
77 memset (pw, 0, sizeof(pw));
78 return ret;
79 }
80
81 static int
set_password(krb5_principal principal,char * password)82 set_password (krb5_principal principal, char *password)
83 {
84 krb5_error_code ret = 0;
85 char pwbuf[128];
86
87 if(password == NULL) {
88 char *princ_name;
89 char *prompt;
90
91 krb5_unparse_name(context, principal, &princ_name);
92 asprintf(&prompt, "%s's Password: ", princ_name);
93 free (princ_name);
94 ret = UI_UTIL_read_pw_string(pwbuf, sizeof(pwbuf), prompt, 1);
95 free (prompt);
96 if(ret){
97 return 0; /* XXX error code? */
98 }
99 password = pwbuf;
100 }
101 if(ret == 0)
102 ret = kadm5_chpass_principal(kadm_handle, principal, password);
103 memset(pwbuf, 0, sizeof(pwbuf));
104 return ret;
105 }
106
107 static int
set_key_data(krb5_principal principal,krb5_key_data * key_data)108 set_key_data (krb5_principal principal, krb5_key_data *key_data)
109 {
110 krb5_error_code ret;
111
112 ret = kadm5_chpass_principal_with_key (kadm_handle, principal,
113 3, key_data);
114 return ret;
115 }
116
117 static int
do_cpw_entry(krb5_principal principal,void * data)118 do_cpw_entry(krb5_principal principal, void *data)
119 {
120 struct cpw_entry_data *e = data;
121
122 if (e->random_key)
123 return set_random_key (principal);
124 else if (e->random_password)
125 return set_random_password (principal);
126 else if (e->key_data)
127 return set_key_data (principal, e->key_data);
128 else
129 return set_password (principal, e->password);
130 }
131
132 int
cpw_entry(struct passwd_options * opt,int argc,char ** argv)133 cpw_entry(struct passwd_options *opt, int argc, char **argv)
134 {
135 krb5_error_code ret = 0;
136 int i;
137 struct cpw_entry_data data;
138 int num;
139 krb5_key_data key_data[3];
140
141 data.random_key = opt->random_key_flag;
142 data.random_password = opt->random_password_flag;
143 data.password = opt->password_string;
144 data.key_data = NULL;
145
146 num = 0;
147 if (data.random_key)
148 ++num;
149 if (data.random_password)
150 ++num;
151 if (data.password)
152 ++num;
153 if (opt->key_string)
154 ++num;
155
156 if (num > 1) {
157 fprintf (stderr, "give only one of "
158 "--random-key, --random-password, --password, --key\n");
159 return 1;
160 }
161
162 if (opt->key_string) {
163 const char *error;
164
165 if (parse_des_key (opt->key_string, key_data, &error)) {
166 fprintf (stderr, "failed parsing key \"%s\": %s\n",
167 opt->key_string, error);
168 return 1;
169 }
170 data.key_data = key_data;
171 }
172
173 for(i = 0; i < argc; i++)
174 ret = foreach_principal(argv[i], do_cpw_entry, "cpw", &data);
175
176 if (data.key_data) {
177 int16_t dummy;
178 kadm5_free_key_data (kadm_handle, &dummy, key_data);
179 }
180
181 return ret != 0;
182 }
183