249 lines
7.4 KiB
C
249 lines
7.4 KiB
C
/*
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* Copyright (c) 1997-2004 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "kadmin_locl.h"
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#include "kadmin-commands.h"
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#include <kadm5/private.h>
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RCSID("$Id: init.c 17447 2006-05-05 10:52:01Z lha $");
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static kadm5_ret_t
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create_random_entry(krb5_principal princ,
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unsigned max_life,
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unsigned max_rlife,
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uint32_t attributes)
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{
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kadm5_principal_ent_rec ent;
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kadm5_ret_t ret;
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int mask = 0;
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krb5_keyblock *keys;
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int n_keys, i;
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char *name;
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const char *password;
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char pwbuf[512];
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random_password(pwbuf, sizeof(pwbuf));
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password = pwbuf;
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ret = krb5_unparse_name(context, princ, &name);
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if (ret) {
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krb5_warn(context, ret, "failed to unparse principal name");
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return ret;
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}
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memset(&ent, 0, sizeof(ent));
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ent.principal = princ;
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mask |= KADM5_PRINCIPAL;
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if (max_life) {
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ent.max_life = max_life;
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mask |= KADM5_MAX_LIFE;
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}
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if (max_rlife) {
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ent.max_renewable_life = max_rlife;
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mask |= KADM5_MAX_RLIFE;
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}
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ent.attributes |= attributes | KRB5_KDB_DISALLOW_ALL_TIX;
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mask |= KADM5_ATTRIBUTES;
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/* Create the entry with a random password */
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ret = kadm5_create_principal(kadm_handle, &ent, mask, password);
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if(ret) {
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krb5_warn(context, ret, "create_random_entry(%s): randkey failed",
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name);
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goto out;
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}
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/* Replace the string2key based keys with real random bytes */
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ret = kadm5_randkey_principal(kadm_handle, princ, &keys, &n_keys);
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if(ret) {
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krb5_warn(context, ret, "create_random_entry*%s): randkey failed",
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name);
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goto out;
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}
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for(i = 0; i < n_keys; i++)
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krb5_free_keyblock_contents(context, &keys[i]);
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free(keys);
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ret = kadm5_get_principal(kadm_handle, princ, &ent,
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KADM5_PRINCIPAL | KADM5_ATTRIBUTES);
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if(ret) {
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krb5_warn(context, ret, "create_random_entry(%s): "
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"unable to get principal", name);
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goto out;
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}
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ent.attributes &= (~KRB5_KDB_DISALLOW_ALL_TIX);
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ent.kvno = 1;
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ret = kadm5_modify_principal(kadm_handle, &ent,
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KADM5_ATTRIBUTES|KADM5_KVNO);
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kadm5_free_principal_ent (kadm_handle, &ent);
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if(ret) {
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krb5_warn(context, ret, "create_random_entry(%s): "
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"unable to modify principal", name);
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goto out;
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}
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out:
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free(name);
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return ret;
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}
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extern int local_flag;
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int
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init(struct init_options *opt, int argc, char **argv)
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{
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kadm5_ret_t ret;
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int i;
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HDB *db;
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krb5_deltat max_life, max_rlife;
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if(!local_flag) {
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krb5_warnx(context, "init is only available in local (-l) mode");
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return 0;
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}
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if (opt->realm_max_ticket_life_string) {
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if (str2deltat (opt->realm_max_ticket_life_string, &max_life) != 0) {
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krb5_warnx (context, "unable to parse \"%s\"",
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opt->realm_max_ticket_life_string);
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return 0;
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}
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}
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if (opt->realm_max_renewable_life_string) {
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if (str2deltat (opt->realm_max_renewable_life_string, &max_rlife) != 0) {
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krb5_warnx (context, "unable to parse \"%s\"",
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opt->realm_max_renewable_life_string);
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return 0;
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}
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}
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db = _kadm5_s_get_db(kadm_handle);
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ret = db->hdb_open(context, db, O_RDWR | O_CREAT, 0600);
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if(ret){
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krb5_warn(context, ret, "hdb_open");
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return 0;
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}
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db->hdb_close(context, db);
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for(i = 0; i < argc; i++){
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krb5_principal princ;
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const char *realm = argv[i];
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/* Create `krbtgt/REALM' */
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ret = krb5_make_principal(context, &princ, realm,
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KRB5_TGS_NAME, realm, NULL);
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if(ret)
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return 0;
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if (opt->realm_max_ticket_life_string == NULL) {
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max_life = 0;
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if(edit_deltat ("Realm max ticket life", &max_life, NULL, 0)) {
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krb5_free_principal(context, princ);
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return 0;
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}
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}
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if (opt->realm_max_renewable_life_string == NULL) {
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max_rlife = 0;
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if(edit_deltat("Realm max renewable ticket life", &max_rlife,
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NULL, 0)) {
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krb5_free_principal(context, princ);
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return 0;
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}
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}
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create_random_entry(princ, max_life, max_rlife, 0);
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krb5_free_principal(context, princ);
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/* Create `kadmin/changepw' */
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krb5_make_principal(context, &princ, realm,
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"kadmin", "changepw", NULL);
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/*
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* The Windows XP (at least) password changing protocol
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* request the `kadmin/changepw' ticket with `renewable_ok,
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* renewable, forwardable' and so fails if we disallow
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* forwardable here.
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*/
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create_random_entry(princ, 5*60, 5*60,
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KRB5_KDB_DISALLOW_TGT_BASED|
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KRB5_KDB_PWCHANGE_SERVICE|
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KRB5_KDB_DISALLOW_POSTDATED|
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KRB5_KDB_DISALLOW_RENEWABLE|
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KRB5_KDB_DISALLOW_PROXIABLE|
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KRB5_KDB_REQUIRES_PRE_AUTH);
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krb5_free_principal(context, princ);
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/* Create `kadmin/admin' */
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krb5_make_principal(context, &princ, realm,
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"kadmin", "admin", NULL);
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create_random_entry(princ, 60*60, 60*60, KRB5_KDB_REQUIRES_PRE_AUTH);
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krb5_free_principal(context, princ);
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/* Create `changepw/kerberos' (for v4 compat) */
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krb5_make_principal(context, &princ, realm,
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"changepw", "kerberos", NULL);
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create_random_entry(princ, 60*60, 60*60,
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KRB5_KDB_DISALLOW_TGT_BASED|
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KRB5_KDB_PWCHANGE_SERVICE);
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krb5_free_principal(context, princ);
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/* Create `kadmin/hprop' for database propagation */
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krb5_make_principal(context, &princ, realm,
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"kadmin", "hprop", NULL);
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create_random_entry(princ, 60*60, 60*60,
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KRB5_KDB_REQUIRES_PRE_AUTH|
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KRB5_KDB_DISALLOW_TGT_BASED);
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krb5_free_principal(context, princ);
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/* Create `default' */
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{
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kadm5_principal_ent_rec ent;
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int mask = 0;
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memset (&ent, 0, sizeof(ent));
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mask |= KADM5_PRINCIPAL;
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krb5_make_principal(context, &ent.principal, realm,
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"default", NULL);
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mask |= KADM5_MAX_LIFE;
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ent.max_life = 24 * 60 * 60;
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mask |= KADM5_MAX_RLIFE;
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ent.max_renewable_life = 7 * ent.max_life;
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ent.attributes = KRB5_KDB_DISALLOW_ALL_TIX;
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mask |= KADM5_ATTRIBUTES;
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ret = kadm5_create_principal(kadm_handle, &ent, mask, "");
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if (ret)
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krb5_err (context, 1, ret, "kadm5_create_principal");
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krb5_free_principal(context, ent.principal);
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}
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}
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return 0;
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}
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