1 /* 2 * Copyright (c) 1997 - 2001 Kungliga Tekniska H�gskolan 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 36 RCSID("$Id: cpw.c,v 1.13 2001/08/10 08:05:35 joda Exp $"); 37 38 struct cpw_entry_data { 39 int random_key; 40 int random_password; 41 char *password; 42 krb5_key_data *key_data; 43 }; 44 45 static struct getargs args[] = { 46 { "random-key", 'r', arg_flag, NULL, "set random key" }, 47 { "random-password", 0, arg_flag, NULL, "set random password" }, 48 { "password", 'p', arg_string, NULL, "princial's password" }, 49 { "key", 0, arg_string, NULL, "DES key in hex" } 50 }; 51 52 static int num_args = sizeof(args) / sizeof(args[0]); 53 54 static void 55 usage(void) 56 { 57 arg_printusage(args, num_args, "passwd", "principal..."); 58 } 59 60 static int 61 set_random_key (krb5_principal principal) 62 { 63 krb5_error_code ret; 64 int i; 65 krb5_keyblock *keys; 66 int num_keys; 67 68 ret = kadm5_randkey_principal(kadm_handle, principal, &keys, &num_keys); 69 if(ret) 70 return ret; 71 for(i = 0; i < num_keys; i++) 72 krb5_free_keyblock_contents(context, &keys[i]); 73 free(keys); 74 return 0; 75 } 76 77 static int 78 set_random_password (krb5_principal principal) 79 { 80 krb5_error_code ret; 81 char pw[128]; 82 83 random_password (pw, sizeof(pw)); 84 ret = kadm5_chpass_principal(kadm_handle, principal, pw); 85 if (ret == 0) { 86 char *princ_name; 87 88 krb5_unparse_name(context, principal, &princ_name); 89 90 printf ("%s's password set to `%s'\n", princ_name, pw); 91 free (princ_name); 92 } 93 memset (pw, 0, sizeof(pw)); 94 return ret; 95 } 96 97 static int 98 set_password (krb5_principal principal, char *password) 99 { 100 krb5_error_code ret = 0; 101 char pwbuf[128]; 102 103 if(password == NULL) { 104 char *princ_name; 105 char *prompt; 106 107 krb5_unparse_name(context, principal, &princ_name); 108 asprintf(&prompt, "%s's Password: ", princ_name); 109 free (princ_name); 110 ret = des_read_pw_string(pwbuf, sizeof(pwbuf), prompt, 1); 111 free (prompt); 112 if(ret){ 113 return 0; /* XXX error code? */ 114 } 115 password = pwbuf; 116 } 117 if(ret == 0) 118 ret = kadm5_chpass_principal(kadm_handle, principal, password); 119 memset(pwbuf, 0, sizeof(pwbuf)); 120 return ret; 121 } 122 123 static int 124 set_key_data (krb5_principal principal, krb5_key_data *key_data) 125 { 126 krb5_error_code ret; 127 128 ret = kadm5_chpass_principal_with_key (kadm_handle, principal, 129 3, key_data); 130 return ret; 131 } 132 133 static int 134 do_cpw_entry(krb5_principal principal, void *data) 135 { 136 struct cpw_entry_data *e = data; 137 138 if (e->random_key) 139 return set_random_key (principal); 140 else if (e->random_password) 141 return set_random_password (principal); 142 else if (e->key_data) 143 return set_key_data (principal, e->key_data); 144 else 145 return set_password (principal, e->password); 146 } 147 148 int 149 cpw_entry(int argc, char **argv) 150 { 151 krb5_error_code ret; 152 int i; 153 int optind = 0; 154 struct cpw_entry_data data; 155 int num; 156 char *key_string; 157 krb5_key_data key_data[3]; 158 159 data.random_key = 0; 160 data.random_password = 0; 161 data.password = NULL; 162 data.key_data = NULL; 163 164 key_string = NULL; 165 166 args[0].value = &data.random_key; 167 args[1].value = &data.random_password; 168 args[2].value = &data.password; 169 args[3].value = &key_string; 170 if(getarg(args, num_args, argc, argv, &optind)){ 171 usage(); 172 return 0; 173 } 174 175 num = 0; 176 if (data.random_key) 177 ++num; 178 if (data.random_password) 179 ++num; 180 if (data.password) 181 ++num; 182 if (key_string) 183 ++num; 184 185 if (num > 1) { 186 printf ("give only one of " 187 "--random-key, --random-password, --password, --key\n"); 188 return 0; 189 } 190 191 if (key_string) { 192 const char *error; 193 194 if (parse_des_key (key_string, key_data, &error)) { 195 printf ("failed parsing key `%s': %s\n", key_string, error); 196 return 0; 197 } 198 data.key_data = key_data; 199 } 200 201 argc -= optind; 202 argv += optind; 203 204 for(i = 0; i < argc; i++) 205 ret = foreach_principal(argv[i], do_cpw_entry, "cpw", &data); 206 207 if (data.key_data) { 208 int16_t dummy; 209 kadm5_free_key_data (kadm_handle, &dummy, key_data); 210 } 211 212 return 0; 213 } 214