153 lines
4.2 KiB
C
153 lines
4.2 KiB
C
/*
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* Copyright (c) 1997-2001 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 "hdb_locl.h"
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RCSID("$Id: common.c,v 1.8 2001/01/30 01:22:17 assar Exp $");
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int
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hdb_principal2key(krb5_context context, krb5_principal p, krb5_data *key)
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{
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Principal new;
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size_t len;
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unsigned char *buf;
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int ret;
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ret = copy_Principal(p, &new);
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if(ret)
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goto out;
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new.name.name_type = 0;
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len = length_Principal(&new);
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buf = malloc(len);
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if(buf == NULL){
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ret = ENOMEM;
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goto out;
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}
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ret = encode_Principal(buf + len - 1, len, &new, &len);
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if(ret){
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free(buf);
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goto out;
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}
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key->data = buf;
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key->length = len;
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out:
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free_Principal(&new);
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return ret;
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}
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int
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hdb_key2principal(krb5_context context, krb5_data *key, krb5_principal p)
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{
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return decode_Principal(key->data, key->length, p, NULL);
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}
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int
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hdb_entry2value(krb5_context context, hdb_entry *ent, krb5_data *value)
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{
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unsigned char *buf;
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size_t len;
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int ret;
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len = length_hdb_entry(ent);
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buf = malloc(len);
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if(buf == NULL)
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return ENOMEM;
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ret = encode_hdb_entry(buf + len - 1, len, ent, &len);
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if(ret){
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free(buf);
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return ret;
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}
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value->data = buf;
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value->length = len;
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return 0;
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}
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int
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hdb_value2entry(krb5_context context, krb5_data *value, hdb_entry *ent)
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{
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return decode_hdb_entry(value->data, value->length, ent, NULL);
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}
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krb5_error_code
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_hdb_fetch(krb5_context context, HDB *db, unsigned flags, hdb_entry *entry)
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{
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krb5_data key, value;
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int code = 0;
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hdb_principal2key(context, entry->principal, &key);
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code = db->_get(context, db, key, &value);
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krb5_data_free(&key);
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if(code)
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return code;
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hdb_value2entry(context, &value, entry);
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if (db->master_key_set && (flags & HDB_F_DECRYPT)) {
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code = hdb_unseal_keys (context, db, entry);
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if (code)
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hdb_free_entry(context, entry);
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}
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krb5_data_free(&value);
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return code;
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}
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krb5_error_code
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_hdb_store(krb5_context context, HDB *db, unsigned flags, hdb_entry *entry)
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{
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krb5_data key, value;
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int code;
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hdb_principal2key(context, entry->principal, &key);
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code = hdb_seal_keys(context, db, entry);
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if (code) {
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krb5_data_free(&key);
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return code;
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}
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hdb_entry2value(context, entry, &value);
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code = db->_put(context, db, flags & HDB_F_REPLACE, key, value);
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krb5_data_free(&value);
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krb5_data_free(&key);
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return code;
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}
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krb5_error_code
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_hdb_remove(krb5_context context, HDB *db, hdb_entry *entry)
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{
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krb5_data key;
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int code;
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hdb_principal2key(context, entry->principal, &key);
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code = db->_del(context, db, key);
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krb5_data_free(&key);
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return code;
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}
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