ed294c6619
condition git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@7514 ec53bebd-3082-4978-b11e-865c3cabbd6b
293 lines
7.1 KiB
C
293 lines
7.1 KiB
C
/*
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* Copyright (c) 1997, 1998, 1999 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 "kadm5_locl.h"
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RCSID("$Id$");
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/*
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* free all the memory used by (len, keys)
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*/
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static void
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free_keys (kadm5_server_context *context,
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int len, Key *keys)
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{
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int i;
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for (i = 0; i < len; ++i) {
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free (keys[i].mkvno);
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keys[i].mkvno = NULL;
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if (keys[i].salt != NULL) {
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free_Salt(keys[i].salt);
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free(keys[i].salt);
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keys[i].salt = NULL;
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}
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krb5_free_keyblock_contents(context->context, &keys[i].key);
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}
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free (keys);
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}
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/*
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* null-ify `len', `keys'
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*/
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static void
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init_keys (Key *keys, int len)
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{
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int i;
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for (i = 0; i < len; ++i) {
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keys[i].mkvno = NULL;
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keys[i].salt = NULL;
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keys[i].key.keyvalue.length = 0;
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keys[i].key.keyvalue.data = NULL;
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}
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}
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/*
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* the known and used DES enctypes
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*/
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static krb5_enctype des_types[] = { ETYPE_DES_CBC_CRC,
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ETYPE_DES_CBC_MD4,
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ETYPE_DES_CBC_MD5 };
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static unsigned n_des_types = 3;
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/*
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* Set the keys of `ent' to the string-to-key of `password'
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*/
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kadm5_ret_t
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_kadm5_set_keys(kadm5_server_context *context,
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hdb_entry *ent,
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const char *password)
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{
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kadm5_ret_t ret = 0;
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int i;
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unsigned len;
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Key *keys;
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krb5_salt salt;
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krb5_boolean v4_salt = FALSE;
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len = n_des_types + 1;
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keys = malloc (len * sizeof(*keys));
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if (keys == NULL)
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return ENOMEM;
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init_keys (keys, len);
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salt.salttype = KRB5_PW_SALT;
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salt.saltvalue.length = 0;
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salt.saltvalue.data = NULL;
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if (krb5_config_get_bool (context->context,
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NULL, "kadmin", "use_v4_salt", NULL)) {
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v4_salt = TRUE;
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} else {
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ret = krb5_get_pw_salt (context->context, ent->principal, &salt);
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if (ret)
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goto out;
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}
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for (i = 0; i < n_des_types; ++i) {
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ret = krb5_string_to_key_salt (context->context,
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des_types[i],
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password,
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salt,
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&keys[i].key);
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if (ret)
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goto out;
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if (v4_salt) {
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keys[i].salt = malloc (sizeof(*keys[i].salt));
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if (keys[i].salt == NULL) {
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ret = ENOMEM;
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goto out;
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}
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keys[i].salt->type = salt.salttype;
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ret = copy_octet_string (&salt.saltvalue, &keys[i].salt->salt);
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if (ret)
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goto out;
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}
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}
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ret = krb5_string_to_key (context->context,
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ETYPE_DES3_CBC_SHA1,
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password,
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ent->principal,
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&keys[n_des_types].key);
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if (ret)
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goto out;
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free_keys (context, ent->keys.len, ent->keys.val);
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ent->keys.len = len;
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ent->keys.val = keys;
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ent->kvno++;
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return ret;
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out:
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krb5_data_free (&salt.saltvalue);
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free_keys (context, len, keys);
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return ret;
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}
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/*
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* Set the keys of `ent' to (`n_key_data', `key_data')
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*/
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kadm5_ret_t
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_kadm5_set_keys2(hdb_entry *ent,
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int16_t n_key_data,
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krb5_key_data *key_data)
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{
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krb5_error_code ret;
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int i;
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ent->keys.len = n_key_data;
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ent->keys.val = malloc(ent->keys.len * sizeof(*ent->keys.val));
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if(ent->keys.val == NULL)
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return ENOMEM;
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for(i = 0; i < n_key_data; i++) {
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ent->keys.val[i].mkvno = NULL;
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ent->keys.val[i].key.keytype = key_data[i].key_data_type[0];
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ret = krb5_data_copy(&ent->keys.val[i].key.keyvalue,
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key_data[i].key_data_contents[0],
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key_data[i].key_data_length[0]);
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if(ret)
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return ret;
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if(key_data[i].key_data_ver == 2) {
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Salt *salt;
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salt = malloc(sizeof(*salt));
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if(salt == NULL)
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return ENOMEM;
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ent->keys.val[i].salt = salt;
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salt->type = key_data[i].key_data_type[1];
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krb5_data_copy(&salt->salt,
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key_data[i].key_data_contents[1],
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key_data[i].key_data_length[1]);
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} else
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ent->keys.val[i].salt = NULL;
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}
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ent->kvno++;
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return 0;
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}
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/*
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* Set the keys of `ent' to random keys and return them in `n_keys'
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* and `new_keys'.
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*/
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kadm5_ret_t
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_kadm5_set_keys_randomly (kadm5_server_context *context,
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hdb_entry *ent,
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krb5_keyblock **new_keys,
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int *n_keys)
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{
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kadm5_ret_t ret = 0;
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int i;
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unsigned len;
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krb5_keyblock *keys;
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Key *hkeys;
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len = n_des_types + 1;
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keys = malloc (len * sizeof(*keys));
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if (keys == NULL)
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return ENOMEM;
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for (i = 0; i < len; ++i) {
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keys[i].keyvalue.length = 0;
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keys[i].keyvalue.data = NULL;
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}
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hkeys = malloc (len * sizeof(*hkeys));
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if (hkeys == NULL) {
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free (keys);
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return ENOMEM;
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}
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init_keys (hkeys, len);
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ret = krb5_generate_random_keyblock (context->context,
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des_types[0],
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&keys[0]);
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if (ret)
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goto out;
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ret = krb5_copy_keyblock_contents (context->context,
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&keys[0],
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&hkeys[0].key);
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if (ret)
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goto out;
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for (i = 1; i < n_des_types; ++i) {
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ret = krb5_copy_keyblock_contents (context->context,
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&keys[0],
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&keys[i]);
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if (ret)
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goto out;
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keys[i].keytype = des_types[i];
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ret = krb5_copy_keyblock_contents (context->context,
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&keys[0],
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&hkeys[i].key);
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if (ret)
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goto out;
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hkeys[i].key.keytype = des_types[i];
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}
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ret = krb5_generate_random_keyblock (context->context,
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ETYPE_DES3_CBC_SHA1,
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&keys[n_des_types]);
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if (ret)
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goto out;
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ret = krb5_copy_keyblock_contents (context->context,
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&keys[n_des_types],
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&hkeys[n_des_types].key);
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if (ret)
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goto out;
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free_keys (context, ent->keys.len, ent->keys.val);
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ent->keys.len = len;
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ent->keys.val = hkeys;
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ent->kvno++;
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*new_keys = keys;
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*n_keys = len;
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return ret;
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out:
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for (i = 0; i < len; ++i)
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krb5_free_keyblock_contents (context->context, &keys[i]);
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free (keys);
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free_keys (context, len, hkeys);
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return ret;
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}
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