/* $NetBSD: randkey_c.c,v 1.2 2017/01/28 21:31:49 christos Exp $ */
/*
* Copyright (c) 1997 - 1999 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 "kadm5_locl.h"
__RCSID("$NetBSD: randkey_c.c,v 1.2 2017/01/28 21:31:49 christos Exp $");
kadm5_ret_t
kadm5_c_randkey_principal(void *server_handle,
krb5_principal princ,
krb5_boolean keepold,
int n_ks_tuple,
krb5_key_salt_tuple *ks_tuple,
krb5_keyblock **new_keys,
int *n_keys)
{
kadm5_client_context *context = server_handle;
kadm5_ret_t ret;
krb5_storage *sp;
unsigned char buf[1536];
int32_t tmp;
size_t i;
krb5_data reply;
ret = _kadm5_connect(server_handle);
if(ret)
return ret;
sp = krb5_storage_from_mem(buf, sizeof(buf));
if (sp == NULL) {
krb5_clear_error_message(context->context);
return ENOMEM;
}
/*
* NOTE WELL: This message is extensible. It currently consists of:
*
* - opcode (kadm_randkey)
* - principal name (princ)
*
* followed by optional items, each of which must be present if
* there are any items following them that are also present:
*
* - keepold boolean (whether to delete old kvnos)
* - number of key/salt type tuples
* - array of {enctype, salttype}
*
* Eventually we may add:
*
* - opaque string2key parameters (salt, rounds, ...)
*/
ret = krb5_store_int32(sp, kadm_randkey);
if (ret == 0)
ret = krb5_store_principal(sp, princ);
if (ret == 0 && (keepold == TRUE || n_ks_tuple > 0))
ret = krb5_store_uint32(sp, keepold);
if (ret == 0 && n_ks_tuple > 0)
ret = krb5_store_uint32(sp, n_ks_tuple);
for (i = 0; ret == 0 && i < n_ks_tuple; i++) {
ret = krb5_store_int32(sp, ks_tuple[i].ks_enctype);
if (ret == 0)
krb5_store_int32(sp, ks_tuple[i].ks_salttype);
}
if (ret)
return ret;
/* Future extensions go here */
ret = _kadm5_client_send(context, sp);
krb5_storage_free(sp);
if (ret)
return ret;
ret = _kadm5_client_recv(context, &reply);
if(ret)
return ret;
sp = krb5_storage_from_data(&reply);
if (sp == NULL) {
krb5_clear_error_message(context->context);
krb5_data_free (&reply);
return ENOMEM;
}
krb5_clear_error_message(context->context);
ret = krb5_ret_int32(sp, &tmp);
if (ret == 0)
ret = tmp;
if (ret == 0){
krb5_keyblock *k;
ret = krb5_ret_int32(sp, &tmp);
if (ret)
goto out;
if (tmp < 0) {
ret = EOVERFLOW;
goto out;
}
k = calloc(tmp, sizeof(*k));
if (k == NULL) {
ret = ENOMEM;
goto out;
}
for(i = 0; ret == 0 && i < tmp; i++)
ret = krb5_ret_keyblock(sp, &k[i]);
if (ret == 0 && n_keys && new_keys) {
*n_keys = tmp;
*new_keys = k;
} else {
krb5_free_keyblock_contents(context->context, &k[i]);
for (; i > 0; i--)
krb5_free_keyblock_contents(context->context, &k[i - 1]);
free(k);
}
}
out:
krb5_storage_free(sp);
krb5_data_free (&reply);
return ret;
}