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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"
#include <kadm5/private.h>
RCSID("$Id: init.c 17447 2006-05-05 10:52:01Z lha $");
static kadm5_ret_t
create_random_entry(krb5_principal princ,
unsigned max_life,
unsigned max_rlife,
uint32_t attributes)
{
kadm5_principal_ent_rec ent;
kadm5_ret_t ret;
int mask = 0;
krb5_keyblock *keys;
int n_keys, i;
char *name;
const char *password;
char pwbuf[512];
random_password(pwbuf, sizeof(pwbuf));
password = pwbuf;
ret = krb5_unparse_name(context, princ, &name);
if (ret) {
krb5_warn(context, ret, "failed to unparse principal name");
return ret;
}
memset(&ent, 0, sizeof(ent));
ent.principal = princ;
mask |= KADM5_PRINCIPAL;
if (max_life) {
ent.max_life = max_life;
mask |= KADM5_MAX_LIFE;
}
if (max_rlife) {
ent.max_renewable_life = max_rlife;
mask |= KADM5_MAX_RLIFE;
}
ent.attributes |= attributes | KRB5_KDB_DISALLOW_ALL_TIX;
mask |= KADM5_ATTRIBUTES;
/* Create the entry with a random password */
ret = kadm5_create_principal(kadm_handle, &ent, mask, password);
if(ret) {
krb5_warn(context, ret, "create_random_entry(%s): randkey failed",
name);
goto out;
}
/* Replace the string2key based keys with real random bytes */
ret = kadm5_randkey_principal(kadm_handle, princ, &keys, &n_keys);
if(ret) {
krb5_warn(context, ret, "create_random_entry*%s): randkey failed",
name);
goto out;
}
for(i = 0; i < n_keys; i++)
krb5_free_keyblock_contents(context, &keys[i]);
free(keys);
ret = kadm5_get_principal(kadm_handle, princ, &ent,
KADM5_PRINCIPAL | KADM5_ATTRIBUTES);
if(ret) {
krb5_warn(context, ret, "create_random_entry(%s): "
"unable to get principal", name);
goto out;
}
ent.attributes &= (~KRB5_KDB_DISALLOW_ALL_TIX);
ent.kvno = 1;
ret = kadm5_modify_principal(kadm_handle, &ent,
KADM5_ATTRIBUTES|KADM5_KVNO);
kadm5_free_principal_ent (kadm_handle, &ent);
if(ret) {
krb5_warn(context, ret, "create_random_entry(%s): "
"unable to modify principal", name);
goto out;
}
out:
free(name);
return ret;
}
extern int local_flag;
int
init(struct init_options *opt, int argc, char **argv)
{
kadm5_ret_t ret;
int i;
HDB *db;
krb5_deltat max_life, max_rlife;
if(!local_flag) {
krb5_warnx(context, "init is only available in local (-l) mode");
return 0;
}
if (opt->realm_max_ticket_life_string) {
if (str2deltat (opt->realm_max_ticket_life_string, &max_life) != 0) {
krb5_warnx (context, "unable to parse \"%s\"",
opt->realm_max_ticket_life_string);
return 0;
}
}
if (opt->realm_max_renewable_life_string) {
if (str2deltat (opt->realm_max_renewable_life_string, &max_rlife) != 0) {
krb5_warnx (context, "unable to parse \"%s\"",
opt->realm_max_renewable_life_string);
return 0;
}
}
db = _kadm5_s_get_db(kadm_handle);
ret = db->hdb_open(context, db, O_RDWR | O_CREAT, 0600);
if(ret){
krb5_warn(context, ret, "hdb_open");
return 0;
}
db->hdb_close(context, db);
for(i = 0; i < argc; i++){
krb5_principal princ;
const char *realm = argv[i];
/* Create `krbtgt/REALM' */
ret = krb5_make_principal(context, &princ, realm,
KRB5_TGS_NAME, realm, NULL);
if(ret)
return 0;
if (opt->realm_max_ticket_life_string == NULL) {
max_life = 0;
if(edit_deltat ("Realm max ticket life", &max_life, NULL, 0)) {
krb5_free_principal(context, princ);
return 0;
}
}
if (opt->realm_max_renewable_life_string == NULL) {
max_rlife = 0;
if(edit_deltat("Realm max renewable ticket life", &max_rlife,
NULL, 0)) {
krb5_free_principal(context, princ);
return 0;
}
}
create_random_entry(princ, max_life, max_rlife, 0);
krb5_free_principal(context, princ);
/* Create `kadmin/changepw' */
krb5_make_principal(context, &princ, realm,
"kadmin", "changepw", NULL);
/*
* The Windows XP (at least) password changing protocol
* request the `kadmin/changepw' ticket with `renewable_ok,
* renewable, forwardable' and so fails if we disallow
* forwardable here.
*/
create_random_entry(princ, 5*60, 5*60,
KRB5_KDB_DISALLOW_TGT_BASED|
KRB5_KDB_PWCHANGE_SERVICE|
KRB5_KDB_DISALLOW_POSTDATED|
KRB5_KDB_DISALLOW_RENEWABLE|
KRB5_KDB_DISALLOW_PROXIABLE|
KRB5_KDB_REQUIRES_PRE_AUTH);
krb5_free_principal(context, princ);
/* Create `kadmin/admin' */
krb5_make_principal(context, &princ, realm,
"kadmin", "admin", NULL);
create_random_entry(princ, 60*60, 60*60, KRB5_KDB_REQUIRES_PRE_AUTH);
krb5_free_principal(context, princ);
/* Create `changepw/kerberos' (for v4 compat) */
krb5_make_principal(context, &princ, realm,
"changepw", "kerberos", NULL);
create_random_entry(princ, 60*60, 60*60,
KRB5_KDB_DISALLOW_TGT_BASED|
KRB5_KDB_PWCHANGE_SERVICE);
krb5_free_principal(context, princ);
/* Create `kadmin/hprop' for database propagation */
krb5_make_principal(context, &princ, realm,
"kadmin", "hprop", NULL);
create_random_entry(princ, 60*60, 60*60,
KRB5_KDB_REQUIRES_PRE_AUTH|
KRB5_KDB_DISALLOW_TGT_BASED);
krb5_free_principal(context, princ);
/* Create `default' */
{
kadm5_principal_ent_rec ent;
int mask = 0;
memset (&ent, 0, sizeof(ent));
mask |= KADM5_PRINCIPAL;
krb5_make_principal(context, &ent.principal, realm,
"default", NULL);
mask |= KADM5_MAX_LIFE;
ent.max_life = 24 * 60 * 60;
mask |= KADM5_MAX_RLIFE;
ent.max_renewable_life = 7 * ent.max_life;
ent.attributes = KRB5_KDB_DISALLOW_ALL_TIX;
mask |= KADM5_ATTRIBUTES;
ret = kadm5_create_principal(kadm_handle, &ent, mask, "");
if (ret)
krb5_err (context, 1, ret, "kadm5_create_principal");
krb5_free_principal(context, ent.principal);
}
}
return 0;
}
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