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/*
* Copyright (c) 1997 - 2004 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "kadmin_locl.h"
#include "kadmin-commands.h"
struct cpw_entry_data {
int keepold;
int random_key;
int random_password;
char *password;
krb5_key_data *key_data;
};
static int
set_random_key (krb5_principal principal, int keepold)
{
krb5_error_code ret;
int i;
krb5_keyblock *keys;
int num_keys;
ret = kadm5_randkey_principal_3(kadm_handle, principal, keepold, 0, NULL,
&keys, &num_keys);
if(ret)
return ret;
for(i = 0; i < num_keys; i++)
krb5_free_keyblock_contents(context, &keys[i]);
free(keys);
return 0;
}
static int
set_random_password (krb5_principal principal, int keepold)
{
krb5_error_code ret;
char pw[128];
char *princ_name;
ret = krb5_unparse_name(context, principal, &princ_name);
if (ret)
return ret;
random_password(pw, sizeof(pw));
ret = kadm5_chpass_principal_3(kadm_handle, principal, keepold, 0, NULL, pw);
if (ret == 0)
printf ("%s's password set to \"%s\"\n", princ_name, pw);
free(princ_name);
memset_s(pw, sizeof(pw), 0, sizeof(pw));
return ret;
}
static int
set_password (krb5_principal principal, char *password, int keepold)
{
krb5_error_code ret = 0;
char pwbuf[128];
int aret;
if(password == NULL) {
char *princ_name;
char *prompt;
ret = krb5_unparse_name(context, principal, &princ_name);
if (ret)
return ret;
aret = asprintf(&prompt, "%s's Password: ", princ_name);
free (princ_name);
if (aret == -1)
return ENOMEM;
ret = UI_UTIL_read_pw_string(pwbuf, sizeof(pwbuf), prompt,
UI_UTIL_FLAG_VERIFY |
UI_UTIL_FLAG_VERIFY_SILENT);
free (prompt);
if(ret){
return KRB5_LIBOS_BADPWDMATCH;
}
password = pwbuf;
}
if(ret == 0)
ret = kadm5_chpass_principal_3(kadm_handle, principal, keepold, 0, NULL,
password);
memset_s(pwbuf, sizeof(pwbuf), 0, sizeof(pwbuf));
return ret;
}
static int
set_key_data (krb5_principal principal, krb5_key_data *key_data, int keepold)
{
krb5_error_code ret;
ret = kadm5_chpass_principal_with_key_3(kadm_handle, principal, keepold,
3, key_data);
return ret;
}
static int
do_cpw_entry(krb5_principal principal, void *data)
{
struct cpw_entry_data *e = data;
if (e->random_key)
return set_random_key (principal, e->keepold);
else if (e->random_password)
return set_random_password (principal, e->keepold);
else if (e->key_data)
return set_key_data (principal, e->key_data, e->keepold);
else
return set_password (principal, e->password, e->keepold);
}
int
cpw_entry(struct passwd_options *opt, int argc, char **argv)
{
krb5_error_code ret = 0;
int i;
struct cpw_entry_data data;
int num;
krb5_key_data key_data[3];
data.random_key = opt->random_key_flag;
data.random_password = opt->random_password_flag;
data.password = opt->password_string;
data.key_data = NULL;
/*
* --keepold is the the default, and it should mean "prune all old keys not
* needed to decrypt extant tickets".
*/
num = 0;
data.keepold = 1;
if (opt->keepold_flag) {
data.keepold = 1;
num++;
}
if (opt->keepallold_flag) {
data.keepold = 2;
num++;
}
if (opt->pruneall_flag) {
data.keepold = 0;
num++;
}
if (num > 1) {
fprintf(stderr, "use only one of --keepold, --keepallold, and --pruneall\n");
return 1;
}
num = 0;
if (data.random_key)
++num;
if (data.random_password)
++num;
if (data.password)
++num;
if (opt->key_string)
++num;
if (num > 1) {
fprintf (stderr, "give only one of "
"--random-key, --random-password, --password, --key\n");
return 1;
}
if (opt->key_string) {
const char *error;
if (parse_des_key (opt->key_string, key_data, &error)) {
fprintf (stderr, "failed parsing key \"%s\": %s\n",
opt->key_string, error);
return 1;
}
data.key_data = key_data;
}
for(i = 0; i < argc; i++)
ret = foreach_principal(argv[i], do_cpw_entry, "cpw", &data);
if (data.key_data) {
int16_t dummy;
kadm5_free_key_data (kadm_handle, &dummy, key_data);
}
return ret != 0;
}
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