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
37struct cpw_entry_data {
38    int random_key;
39    int random_password;
40    char *password;
41    krb5_key_data *key_data;
42};
43
44static int
45set_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
61static int
62set_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
81static int
82set_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
107static int
108set_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
117static int
118do_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
132int
133cpw_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