diff options
Diffstat (limited to 'crypto/heimdal/lib/hdb/common.c')
-rw-r--r-- | crypto/heimdal/lib/hdb/common.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/crypto/heimdal/lib/hdb/common.c b/crypto/heimdal/lib/hdb/common.c new file mode 100644 index 0000000..6e95667 --- /dev/null +++ b/crypto/heimdal/lib/hdb/common.c @@ -0,0 +1,145 @@ +/* + * 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 "hdb_locl.h" + +RCSID("$Id: common.c,v 1.6 1999/12/02 17:05:04 joda Exp $"); + +int +hdb_principal2key(krb5_context context, krb5_principal p, krb5_data *key) +{ + Principal new; + size_t len; + unsigned char *buf; + int ret; + + ret = copy_Principal(p, &new); + if(ret) + goto out; + new.name.name_type = 0; + len = length_Principal(&new); + buf = malloc(len); + if(buf == NULL){ + ret = ENOMEM; + goto out; + } + ret = encode_Principal(buf + len - 1, len, &new, &len); + if(ret){ + free(buf); + goto out; + } + key->data = buf; + key->length = len; +out: + free_Principal(&new); + return ret; +} + +int +hdb_key2principal(krb5_context context, krb5_data *key, krb5_principal p) +{ + return decode_Principal(key->data, key->length, p, NULL); +} + +int +hdb_entry2value(krb5_context context, hdb_entry *ent, krb5_data *value) +{ + unsigned char *buf; + size_t len; + int ret; + + len = length_hdb_entry(ent); + buf = malloc(len); + if(buf == NULL) + return ENOMEM; + ret = encode_hdb_entry(buf + len - 1, len, ent, &len); + if(ret){ + free(buf); + return ret; + } + value->data = buf; + value->length = len; + return 0; +} + +int +hdb_value2entry(krb5_context context, krb5_data *value, hdb_entry *ent) +{ + return decode_hdb_entry(value->data, value->length, ent, NULL); +} + +krb5_error_code +_hdb_fetch(krb5_context context, HDB *db, unsigned flags, hdb_entry *entry) +{ + krb5_data key, value; + int code; + + hdb_principal2key(context, entry->principal, &key); + code = db->_get(context, db, key, &value); + krb5_data_free(&key); + if(code) + return code; + hdb_value2entry(context, &value, entry); + if (db->master_key_set && (flags & HDB_F_DECRYPT)) + hdb_unseal_keys (db, entry); + krb5_data_free(&value); + return 0; +} + +krb5_error_code +_hdb_store(krb5_context context, HDB *db, unsigned flags, hdb_entry *entry) +{ + krb5_data key, value; + int code; + + hdb_principal2key(context, entry->principal, &key); + hdb_seal_keys(db, entry); + hdb_entry2value(context, entry, &value); + code = db->_put(context, db, flags & HDB_F_REPLACE, key, value); + krb5_data_free(&value); + krb5_data_free(&key); + return code; +} + +krb5_error_code +_hdb_remove(krb5_context context, HDB *db, hdb_entry *entry) +{ + krb5_data key; + int code; + + hdb_principal2key(context, entry->principal, &key); + code = db->_del(context, db, key); + krb5_data_free(&key); + return code; +} + |