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/*
* kadmin/v5server/keytab.c
*
* Copyright 1995 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
*/
#include "k5-int.h"
#include "kdb_dbc.h"
krb5_error_code krb5_ktkdb_close KRB5_PROTOTYPE((krb5_context, krb5_keytab));
krb5_error_code krb5_ktkdb_get_entry KRB5_PROTOTYPE((krb5_context, krb5_keytab, krb5_principal,
krb5_kvno, krb5_enctype, krb5_keytab_entry *));
krb5_kt_ops krb5_kt_kdb_ops = {
0,
"KDB", /* Prefix -- this string should not appear anywhere else! */
NULL, /* resolve */
NULL, /* get_name */
krb5_ktkdb_close, /* close */
krb5_ktkdb_get_entry, /* get */
NULL, /* start_seq_get */
NULL, /* get_next */
NULL, /* end_get */
NULL, /* add (extended) */
NULL, /* remove (extended) */
NULL, /* (void *) &krb5_ktfile_ser_entry */
};
typedef struct krb5_ktkdb_data {
char * name;
} krb5_ktkdb_data;
krb5_error_code
krb5_ktkdb_resolve(context, kdb, id)
krb5_context context;
krb5_db_context * kdb;
krb5_keytab * id;
{
krb5_db_context * data;
if ((*id = (krb5_keytab) malloc(sizeof(**id))) == NULL)
return(ENOMEM);
if ((data = (krb5_db_context *)malloc(sizeof(krb5_db_context))) == NULL) {
krb5_xfree(*id);
return(ENOMEM);
}
memcpy(data, kdb, sizeof(krb5_db_context));
(*id)->data = (krb5_pointer)data;
(*id)->ops = &krb5_kt_kdb_ops;
(*id)->magic = KV5M_KEYTAB;
return(0);
}
krb5_error_code
krb5_ktkdb_close(context, kt)
krb5_context context;
krb5_keytab kt;
{
/*
* This routine is responsible for freeing all memory allocated
* for this keytab. There are no system resources that need
* to be freed nor are there any open files.
*
* This routine should undo anything done by krb5_ktkdb_resolve().
*/
krb5_xfree(kt->data);
kt->ops = 0;
krb5_xfree(kt);
return 0;
}
krb5_error_code
krb5_ktkdb_get_entry(context, id, principal, kvno, enctype, entry)
krb5_context context;
krb5_keytab id;
krb5_principal principal;
krb5_kvno kvno;
krb5_enctype enctype;
krb5_keytab_entry * entry;
{
krb5_encrypt_block * master_key;
krb5_error_code kerror = 0;
krb5_key_data * key_data;
krb5_db_entry db_entry;
krb5_boolean more = 0;
int n = 0;
/* Open database */
/* krb5_dbm_db_init(context); */
if ((kerror = krb5_dbm_db_open_database(context)))
return(kerror);
/* get_principal */
kerror = krb5_dbm_db_get_principal(context, principal, &
db_entry, &n, &more);
if (kerror) {
krb5_dbm_db_close_database(context);
return(kerror);
}
if (n != 1) {
krb5_dbm_db_close_database(context);
return KRB5_KT_NOTFOUND;
}
/* match key */
/* WTF??? 2nd arg to dbm_db_get_mkey appears to be unused! -tlyu */
kerror = krb5_dbm_db_get_mkey(context, id->ops, &master_key);
if (kerror)
goto error;
kerror = krb5_dbe_find_enctype(context, &db_entry,
enctype, -1, kvno, &key_data);
if (kerror)
goto error;
kerror = krb5_dbekd_decrypt_key_data(context, master_key,
key_data, &entry->key, NULL);
if (kerror)
goto error;
kerror = krb5_copy_principal(context, principal, &entry->principal);
if (kerror)
goto error;
/* Close database */
error:
krb5_dbe_free_contents(context, &db_entry);
krb5_dbm_db_close_database(context);
return(kerror);
}
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