/* keydb.h - Key database routines
 * Copyright (C) 2002-2012 Free Software Foundation, Inc.
 *
 * Author: Timo Schulz
 *
 * This file is part of OpenCDK.
 *
 * The OpenCDK library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 *
 */

/* Internal key index structure. */
struct key_idx_s {
	off_t offset;
	u32 keyid[2];
	byte fpr[KEY_FPR_LEN];
};
typedef struct key_idx_s *key_idx_t;

/* Internal key cache to associate a key with an file offset. */
struct key_table_s {
	struct key_table_s *next;
	off_t offset;
};
typedef struct key_table_s *key_table_t;

typedef struct cdk_keydb_search_s {
	off_t off;		/* last file offset */
	union {
		char *pattern;	/* A search is performed by pattern. */
		u32 keyid[2];	/* A search by keyid. */
		byte fpr[KEY_FPR_LEN];	/* A search by fingerprint. */
	} u;
	int type;
	struct key_table_s *cache;
	size_t ncache;
	unsigned int no_cache:1;	/* disable the index cache. */

	cdk_stream_t idx;
	char *idx_name;		/* name of the index file or NULL. */

} cdk_keydb_search_s;

/* Internal key database handle. */
struct cdk_keydb_hd_s {
	int type;		/* type of the key db handle. */
	int fp_ref;		/* 1=means it is a reference and shall not be closed. */
	cdk_stream_t fp;
	char *name;		/* name of the underlying file or NULL. */
	unsigned int secret:1;	/* contain secret keys. */
	unsigned int isopen:1;	/* the underlying stream is opened. */

	/* structure to store some stats about the keydb. */
	struct {
		size_t new_keys;	/* amount of new keys that were imported. */
	} stats;
};