1/*
2 * Copyright (c) 1997-2003 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 "headers.h"
35#include <getarg.h>
36
37int version5;
38int version4;
39int afs;
40char *principal;
41char *cell;
42char *password;
43const char *keytype_str = "des3-cbc-sha1";
44int version;
45int help;
46
47struct getargs args[] = {
48    { "version5", '5', arg_flag,   &version5, "Output Kerberos v5 string-to-key",
49	NULL },
50    { "version4", '4', arg_flag,   &version4, "Output Kerberos v4 string-to-key",
51	NULL },
52    { "afs",      'a', arg_flag,   &afs, "Output AFS string-to-key", NULL },
53    { "cell",     'c', arg_string, &cell, "AFS cell to use", "cell" },
54    { "password", 'w', arg_string, &password, "Password to use", "password" },
55    { "principal",'p', arg_string, &principal, "Kerberos v5 principal to use", "principal" },
56    { "keytype",  'k', arg_string, rk_UNCONST(&keytype_str), "Keytype", NULL },
57    { "version",    0, arg_flag,   &version, "print version", NULL },
58    { "help",       0, arg_flag,   &help, NULL, NULL }
59};
60
61int num_args = sizeof(args) / sizeof(args[0]);
62
63static void
64usage(int status)
65{
66    arg_printusage (args, num_args, NULL, "password");
67    exit(status);
68}
69
70static void
71tokey(krb5_context context,
72      krb5_enctype enctype,
73      const char *pw,
74      krb5_salt salt,
75      const char *label)
76{
77    krb5_error_code ret;
78    size_t i;
79    krb5_keyblock key;
80    char *e;
81
82    ret = krb5_string_to_key_salt(context, enctype, pw, salt, &key);
83    if (ret)
84	krb5_err(context, 1, ret, "krb5_string_to_key_salt");
85    ret = krb5_enctype_to_string(context, enctype, &e);
86    if (ret)
87	krb5_err(context, 1, ret, "krb5_enctype_to_string");
88    printf(label, e);
89    printf(": ");
90    for(i = 0; i < key.keyvalue.length; i++)
91	printf("%02x", ((unsigned char*)key.keyvalue.data)[i]);
92    printf("\n");
93    krb5_free_keyblock_contents(context, &key);
94    free(e);
95}
96
97int
98main(int argc, char **argv)
99{
100    krb5_context context;
101    krb5_principal princ;
102    krb5_salt salt;
103    int optidx;
104    char buf[1024];
105    krb5_enctype etype;
106    krb5_error_code ret;
107
108    optidx = krb5_program_setup(&context, argc, argv, args, num_args, NULL);
109
110    if(help)
111	usage(0);
112
113    if(version){
114	print_version (NULL);
115	return 0;
116    }
117
118    argc -= optidx;
119    argv += optidx;
120
121    if (argc > 1)
122	usage(1);
123
124    if(!version5 && !version4 && !afs)
125	version5 = 1;
126
127    ret = krb5_string_to_enctype(context, keytype_str, &etype);
128    if(ret)
129	krb5_err(context, 1, ret, "krb5_string_to_enctype");
130
131    if((etype != ETYPE_DES_CBC_CRC &&
132	etype != ETYPE_DES_CBC_MD4 &&
133	etype != ETYPE_DES_CBC_MD5) &&
134       (afs || version4)) {
135	if(!version5) {
136	    etype = ETYPE_DES_CBC_CRC;
137	} else {
138	    krb5_errx(context, 1,
139		      "DES is the only valid keytype for AFS and Kerberos 4");
140	}
141    }
142
143    if(version5 && principal == NULL){
144	printf("Kerberos v5 principal: ");
145	if(fgets(buf, sizeof(buf), stdin) == NULL)
146	    return 1;
147	buf[strcspn(buf, "\r\n")] = '\0';
148	principal = estrdup(buf);
149    }
150    if(afs && cell == NULL){
151	printf("AFS cell: ");
152	if(fgets(buf, sizeof(buf), stdin) == NULL)
153	    return 1;
154	buf[strcspn(buf, "\r\n")] = '\0';
155	cell = estrdup(buf);
156    }
157    if(argv[0])
158	password = argv[0];
159    if(password == NULL){
160	if(UI_UTIL_read_pw_string(buf, sizeof(buf), "Password: ", 0))
161	    return 1;
162	password = buf;
163    }
164
165    if(version5){
166	krb5_parse_name(context, principal, &princ);
167	krb5_get_pw_salt(context, princ, &salt);
168	tokey(context, etype, password, salt, "Kerberos 5 (%s)");
169	krb5_free_salt(context, salt);
170    }
171    if(version4){
172	salt.salttype = KRB5_PW_SALT;
173	salt.saltvalue.length = 0;
174	salt.saltvalue.data = NULL;
175	tokey(context, ETYPE_DES_CBC_MD5, password, salt, "Kerberos 4");
176    }
177    if(afs){
178	salt.salttype = KRB5_AFS3_SALT;
179	salt.saltvalue.length = strlen(cell);
180	salt.saltvalue.data = cell;
181	tokey(context, ETYPE_DES_CBC_MD5, password, salt, "AFS");
182    }
183    return 0;
184}
185