/*
* 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 "ktutil_locl.h"
RCSID("$Id$");
static void*
open_kadmin_connection(char *principal,
const char *realm,
char *admin_server,
int server_port)
{
static kadm5_config_params conf;
krb5_error_code ret;
void *kadm_handle;
memset(&conf, 0, sizeof(conf));
if(realm) {
conf.realm = strdup(realm);
if (conf.realm == NULL) {
krb5_set_error_message(context, 0, "malloc: out of memory");
return NULL;
}
conf.mask |= KADM5_CONFIG_REALM;
}
if (admin_server) {
conf.admin_server = admin_server;
conf.mask |= KADM5_CONFIG_ADMIN_SERVER;
}
if (server_port) {
conf.kadmind_port = htons(server_port);
conf.mask |= KADM5_CONFIG_KADMIND_PORT;
}
/* should get realm from each principal, instead of doing
everything with the same (local) realm */
ret = kadm5_init_with_password_ctx(context,
principal,
NULL,
KADM5_ADMIN_SERVICE,
&conf, 0, 0,
&kadm_handle);
free(conf.realm);
if(ret) {
krb5_warn(context, ret, "kadm5_init_with_password");
return NULL;
}
return kadm_handle;
}
static int
parse_enctypes(struct get_options *opt,
size_t *nks,
krb5_key_salt_tuple **ks)
{
const char *str;
char *s = NULL;
char *tmp;
size_t i;
int ret;
*nks = 0;
*ks = NULL;
if (opt->enctypes_strings.num_strings == 0) {
str = krb5_config_get_string(context, NULL, "libdefaults",
"supported_enctypes", NULL);
if (str == NULL)
str = "aes128-cts-hmac-sha1-96";
return krb5_string_to_keysalts2(context, str, nks, ks);
}
for (i = 0; i < opt->enctypes_strings.num_strings; i++) {
if (asprintf(&tmp, "%s%s%s", i ? s : "", i ? "," : "",
opt->enctypes_strings.strings[i]) == -1) {
free(s);
return krb5_enomem(context);
}
free(s);
s = tmp;
}
ret = krb5_string_to_keysalts2(context, s, nks, ks);
free(s);
return ret;
}
int
kt_get(struct get_options *opt, int argc, char **argv)
{
krb5_error_code ret = 0;
krb5_keytab keytab;
void *kadm_handle = NULL;
krb5_key_salt_tuple *ks = NULL;
size_t nks;
size_t i;
int a, j, keep;
unsigned int failed = 0;
i = 0;
keep = 1;
if (opt->keepallold_flag) {
keep = 2;
i++;
}
if (opt->keepold_flag) {
keep = 1;
i++;
}
if (opt->pruneall_flag) {
keep = 0;
i++;
}
if (i > 1) {
fprintf(stderr, "use only one of --keepold, --keepallold, or --pruneall\n");
return EINVAL;
}
if ((ret = parse_enctypes(opt, &nks, &ks))) {
fprintf(stderr, "invalid enctype(s)\n");
return ret;
}
if((keytab = ktutil_open_keytab()) == NULL) {
free(ks);
return 1;
}
if(opt->realm_string)
krb5_set_default_realm(context, opt->realm_string);
for(a = 0; a < argc; a++){
krb5_principal princ_ent;
kadm5_principal_ent_rec princ;
int mask = 0;
krb5_keyblock *keys;
int n_keys = 0;
int created = 0;
krb5_keytab_entry entry;
ret = krb5_parse_name(context, argv[a], &princ_ent);
if (ret) {
krb5_warn(context, ret, "can't parse principal %s", argv[a]);
failed++;
continue;
}
memset(&princ, 0, sizeof(princ));
princ.principal = princ_ent;
mask |= KADM5_PRINCIPAL;
princ.attributes |= KRB5_KDB_DISALLOW_ALL_TIX;
mask |= KADM5_ATTRIBUTES;
princ.princ_expire_time = 0;
mask |= KADM5_PRINC_EXPIRE_TIME;
if(kadm_handle == NULL) {
const char *r;
if(opt->realm_string != NULL)
r = opt->realm_string;
else
r = krb5_principal_get_realm(context, princ_ent);
kadm_handle = open_kadmin_connection(opt->principal_string,
r,
opt->admin_server_string,
opt->server_port_integer);
if(kadm_handle == NULL)
break;
}
if (opt->create_flag) {
ret = kadm5_create_principal(kadm_handle, &princ, mask, "thisIs_aUseless.password123");
if(ret == 0)
created = 1;
else if(ret != KADM5_DUP) {
krb5_warn(context, ret, "kadm5_create_principal(%s)", argv[a]);
krb5_free_principal(context, princ_ent);
failed++;
continue;
}
}
if (opt->change_keys_flag) {
ret = kadm5_randkey_principal_3(kadm_handle, princ_ent, keep, nks, ks,
&keys, &n_keys);
if (ret) {
krb5_warn(context, ret, "kadm5_randkey_principal(%s)", argv[a]);
krb5_free_principal(context, princ_ent);
failed++;
continue;
}
}
ret = kadm5_get_principal(kadm_handle, princ_ent, &princ,
KADM5_PRINCIPAL | KADM5_KVNO | KADM5_ATTRIBUTES);
if (ret) {
krb5_warn(context, ret, "kadm5_get_principal(%s)", argv[a]);
for (j = 0; j < n_keys; j++)
krb5_free_keyblock_contents(context, &keys[j]);
krb5_free_principal(context, princ_ent);
failed++;
continue;
}
if(!created && (princ.attributes & KRB5_KDB_DISALLOW_ALL_TIX))
krb5_warnx(context, "%s: disallow-all-tix flag set - clearing", argv[a]);
princ.attributes &= (~KRB5_KDB_DISALLOW_ALL_TIX);
mask = KADM5_ATTRIBUTES;
if(created) {
princ.kvno = 1;
mask |= KADM5_KVNO;
}
ret = kadm5_modify_principal(kadm_handle, &princ, mask);
if (ret) {
krb5_warn(context, ret, "kadm5_modify_principal(%s)", argv[a]);
for (j = 0; j < n_keys; j++)
krb5_free_keyblock_contents(context, &keys[j]);
krb5_free_principal(context, princ_ent);
failed++;
continue;
}
for(j = 0; j < n_keys; j++) {
entry.principal = princ_ent;
entry.vno = princ.kvno;
entry.keyblock = keys[j];
entry.timestamp = time (NULL);
ret = krb5_kt_add_entry(context, keytab, &entry);
if (ret)
krb5_warn(context, ret, "krb5_kt_add_entry");
krb5_free_keyblock_contents(context, &keys[j]);
}
kadm5_free_principal_ent(kadm_handle, &princ);
krb5_free_principal(context, princ_ent);
}
if (kadm_handle)
kadm5_destroy(kadm_handle);
krb5_kt_close(context, keytab);
free(ks);
return ret != 0 || failed > 0;
}