/*
 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _KDB_LOG_H
#define _KDB_LOG_H

#include <k5-int.h>
#include <iprop_hdr.h>
#include <iprop.h>
#include <limits.h>
#include <kadm5/admin.h>

#ifdef  __cplusplus
extern "C" {
#endif

/*
 * DB macros
 */
#define INDEX(ulogaddr, i) ((ulong_t) ulogaddr + sizeof (kdb_hlog_t) + \
        (i*ulog->kdb_block))

/*
 * Current DB version #
 */
#define KDB_VERSION     1

/*
 * DB log states
 */
#define KDB_STABLE      1
#define KDB_UNSTABLE    2
#define KDB_CORRUPT     3

/*
 * DB log constants
 */
#define KDB_UMAGIC      0x6661212
#define KDB_HMAGIC      0x6662323

/*
 * DB Flags
 */
#define FKADMIND        1
#define FKPROPLOG       2
#define FKPROPD         3
#define FKCOMMAND       4       /* Includes kadmin.local and kdb5_util */

/*
 * Default ulog file attributes
 */
#define ULOG_FILE       "/var/krb5/principal.ulog"
#define MAX_FILENAME    (PATH_MAX + 1)
#define MAX_ULOGENTRIES 2500
#define DEF_ULOGENTRIES 1000
#define ULOG_IDLE_TIME  10              /* in seconds */
/*
 * Max size of update entry + update header
 * We make this large since resizing can be costly.
 */
#define ULOG_BLOCK      2048            /* Default size of principal record */

#define MAXLOGLEN       0x10000000      /* 256 MB log file */

/*
 * Prototype declarations
 */
extern krb5_error_code ulog_map(krb5_context context,
        kadm5_config_params *params, int caller);
extern krb5_error_code ulog_add_update(krb5_context context,
        kdb_incr_update_t *upd);
extern krb5_error_code ulog_delete_update(krb5_context context,
        kdb_incr_update_t *upd);
extern krb5_error_code ulog_finish_update(krb5_context context,
        kdb_incr_update_t *upd);
extern krb5_error_code ulog_get_entries(krb5_context context, kdb_last_t last,
        kdb_incr_result_t *ulog_handle);
extern krb5_error_code ulog_replay(krb5_context context,
        kdb_incr_result_t *incr_ret);
extern krb5_error_code ulog_conv_2logentry(krb5_context context,
        krb5_db_entry *entries, kdb_incr_update_t *updates, int nentries);
extern krb5_error_code ulog_conv_2dbentry(krb5_context context,
        krb5_db_entry *entries, kdb_incr_update_t *updates, int nentries);
extern void ulog_free_entries(kdb_incr_update_t *updates, int no_of_updates);
extern krb5_error_code ulog_set_role(krb5_context ctx, iprop_role role);

typedef struct kdb_hlog {
        uint32_t        kdb_hmagic;     /* Log header magic # */
        uint16_t        db_version_num; /* Kerberos database version no. */
        uint32_t        kdb_num;        /* # of updates in log */
        kdbe_time_t     kdb_first_time; /* Timestamp of first update */
        kdbe_time_t     kdb_last_time;  /* Timestamp of last update */
        kdb_sno_t       kdb_first_sno;  /* First serial # in the update log */
        kdb_sno_t       kdb_last_sno;   /* Last serial # in the update log */
        uint16_t        kdb_state;      /* State of update log */
        uint16_t        kdb_block;      /* Block size of each element */
} kdb_hlog_t;

typedef struct kdb_ent_header {
        uint32_t        kdb_umagic;     /* Update entry magic # */
        kdb_sno_t       kdb_entry_sno;  /* Serial # of entry */
        kdbe_time_t     kdb_time;       /* Timestamp of update */
        bool_t          kdb_commit;     /* Is the entry committed or not */
        uint32_t        kdb_entry_size; /* Size of update entry */
        uchar_t         entry_data[4];  /* Address of kdb_incr_update_t */
} kdb_ent_header_t;

typedef struct _kdb_log_context {
        iprop_role      iproprole;
        kdb_hlog_t      *ulog;
        uint32_t        ulogentries;
        int             ulogfd;
} kdb_log_context;

#ifdef  __cplusplus
}
#endif

#endif  /* !_KDB_LOG_H */