#include <stdint.h>

#include "nss_db.h"

/* This file contains dummy definitions of the DB structure of the
   Berkeley DB.  We are only interested in the function pointers since
   this is the interface to the database.  Unfortunately the structure
   changed over time and we have to take this into account.  */

/* The values to select the database type are unchanged over the version.
   Define only what we really need.  */
#define DB_BTREE	(1)

/* Permission flags.  */
#define DB2x_RDONLY	0x010000

/* Access methods.  */
#define DB24_FIRST		0x000020
#define DB24_NEXT		0x000800
#define DB24_NOOVERWRITE	0x001000

/* The error values that are needed.  */
#define DB2x_KEYEXIST	( -3)
#define DB2x_NOTFOUND	( -7)


/* This is for the db-2.x version up to 2.x.y.  We use the name `db24' since
   this is the version which was shipped with glibc 2.1.  */
struct db24
{
  void	*mutexp;
  enum { dummy24 } type;
  void *dbenv;
  void *mp_dbenv;
  void *master;
  void *internal;
  void *mp;
  void *mpf;
  struct
  {
    void *tqh_first;
    void **tqh_last;
  } curs_queue;
  struct {
    void *lh_first;
  } handleq;
  struct {
    void *le_next;
    void **le_prev;
  } links;
  uint32_t log_fileid;
  void *txn;
  uint32_t locker;
  struct db24_dbt {
    void *data;
    uint32_t size;
    uint32_t ulen;
    uint32_t dlen;
    uint32_t doff;
    uint32_t flags;
  } lock_dbt;
  struct{
    uint32_t pgno;
    uint8_t fileid[20];
  } lock;
  size_t pgsize;
  void *db_malloc;
  /* Functions. */
  int (*close) (void *, uint32_t);
  int (*cursor) (void *, void *, void **);
  int (*del) (void *, void *, DBT *, uint32_t);
  int (*fd) (void *, int *);
  int (*get) (void *, void *, DBT *, DBT *, uint32_t);
  int (*put) (void *, void *, DBT *, DBT *, uint32_t);
  int (*stat) (void *, void *, void *(*)(size_t), uint32_t);
  int (*sync) (void *, uint32_t);
  uint32_t flags;
};


struct dbc24
{
  void *dbp;
  void *txn;
  struct
  {
    void *tqe_next;
    void **tqe_prev;
  } links;
  void *internal;
  void *c_close;
  void *c_del;
  int (*c_get) (void *, void *, void *, uint32_t);
  void *c_put;
};

/* Flags which changed.  */
#define DB24_TRUNCATE	0x080000


/* Versions for 2.7, slightly incompatible with version 2.4.  */
struct db27
{
  void	*mutexp;
  enum { dummy27 } type;
  int byteswapped;
  int saved_open_fd;
  void *dbenv;
  void *mp_dbenv;
  void *internal;
  void *mp;
  void *mpf;
  struct
  {
    void *tqh_first;
    void **tqh_last;
  } free_queue;
  struct
  {
    void *tqh_first;
    void **tqh_last;
  } active_queue;
  uint8_t fileid[20];
  uint32_t log_fileid;
  size_t pgsize;
  void *db_malloc;
  void *dup_compare;
  void *h_hash;
  /* Functions. */
  int (*am_close) (void *);
  int (*close) (void *, uint32_t);
  int (*cursor) (void *, void *, void **, uint32_t);
  int (*del) (void *, void *, DBT *, uint32_t);
  int (*fd) (void *, int *);
  int (*get) (void *, void *, DBT *, DBT *, uint32_t);
  int (*join) (void *, void **, uint32_t, void **);  
  int (*put) (void *, void *, DBT *, DBT *, uint32_t);
  int (*stat) (void *, void *, void *(*)(size_t), uint32_t);
  int (*sync) (void *, uint32_t);
  uint32_t flags;
};


struct dbc27
{
  void *dbp;
  void *txn;
  struct
  {
    void *tqe_next;
    void **tqe_prev;
  } links;
  uint32_t lid;
  uint32_t locker;
  DBT lock_dbt;
  struct{
    uint32_t pgno;
    uint8_t fileid[20];
  } lock;
  size_t mylock;
  DBT rkey;
  DBT rdata;
  void *c_am_close;
  void *c_am_destroy;
  void *c_close;
  void *c_del;
  int (*c_get) (void *, void *, void *, uint32_t);
  void *c_put;
  void *internal;
  uint32_t flags;
};

/* Flags which changed.  */
#define DB27_TRUNCATE	0x020000

/* Access methods.  */
#define DB27_FIRST		7
#define DB27_NEXT		15
#define DB27_NOOVERWRITE	17

/* Versions for 3.0, incompatible with version 2.x.  */
struct db30
{
  size_t pgsize;
  void (*db_feedback) (void *, int, int);
  void *(*db_malloc) (size_t);
  void *(*db_realloc) (void *, size_t);
  int (*dup_compare) (const DBT *, const DBT *);
  void *dbenv;
  enum { dummy30 } type;
  void *mpf;
  void	*mutexp;
  u_int8_t fileid[20];
  int32_t log_fileid;
  void *open_txn;
  void *saved_open_fhp;
  struct
  {
    void *tqh_first;
    void **tqh_last;
  } free_queue;
  struct
  {
    void *tqh_first;
    void **tqh_last;
  } active_queue;
  void	*bt_internal;
  void	*cj_internal;
  void	*h_internal;
  void	*q_internal;
  void	*xa_internal;
  /* Functions.  */
  int  (*close) (void *, uint32_t);
  int  (*cursor) (void *, void *, void **, uint32_t);
  int  (*del) (void *, void *, DBT *, uint32_t);
  void (*err) (void *, int, const char *, ...);
  void (*errx) (void *, const char *, ...);
  int  (*fd) (void *, int *);
  int  (*get) (void *, void *, DBT *, DBT *, uint32_t);
  int  (*get_byteswapped) (void *);
  int (*get_type) (void *);
  int  (*join) (void *, void **, void **, uint32_t);
  int  (*open) (void *,	const char *, const char *, int, uint32_t, int);
  int  (*put) (void *, void *, DBT *, DBT *, uint32_t);
  int  (*remove) (void *, const char *, const char *, uint32_t);
  int  (*set_cachesize) (void *, uint32_t, uint32_t, int);
  int  (*set_dup_compare) (void *, int (*)(const DBT *, const DBT *));
  void (*set_errcall) (void *, void (*)(const char *, char *));
  void (*set_errfile) (void *, void *);
  void (*set_errpfx) (void *, const char *);
  void (*set_feedback) (void *, void (*)(void *, int, int));
  int  (*set_flags) (void *, uint32_t);
  int  (*set_lorder) (void *, int);
  int  (*set_malloc) (void *, void *(*)(size_t));
  int  (*set_pagesize) (void *, uint32_t);
  void (*set_paniccall) (void *, void (*)(void *, int));
  int  (*set_realloc) (void *, void *(*)(void *, size_t));
  int  (*stat) (void *, void *, void *(*)(size_t), uint32_t);
  int  (*sync) (void *, uint32_t);
  int  (*upgrade) (void *, const char *, uint32_t);
  
  int  (*set_bt_compare) (void *, int (*)(const DBT *, const DBT *));
  int  (*set_bt_maxkey) (void *, uint32_t);
  int  (*set_bt_minkey) (void *, uint32_t);
  int  (*set_bt_prefix) (void *, size_t (*)(const DBT *, const DBT *));
  
  int  (*set_h_ffactor) (void *, uint32_t);
  int  (*set_h_hash) (void *, uint32_t (*)(const void *, uint32_t));
  int  (*set_h_nelem) (void *, uint32_t);
  
  int  (*set_re_delim) (void *, int);
  int  (*set_re_len) (void *, uint32_t);
  int  (*set_re_pad) (void *, int);
  int  (*set_re_source) (void *, const char *);

  uint32_t am_ok;
  uint32_t flags;
};


struct dbc30
{
  void *dbp;
  void *txn;
  struct
  {
    void *tqe_next;
    void **tqe_prev;
  } links;
  uint32_t lid;			/* Default process' locker id. */
  uint32_t locker;		/* Locker for this operation. */
  DBT lock_dbt;		/* DBT referencing lock. */
  struct
  {
    uint32_t pgno;
    uint8_t fileid[20];
  } lock;
  struct
  {
    size_t off;
    uint32_t ndx;
    uint32_t gen;
  } mylock;
  DBT rkey;
  DBT rdata;
  int (*c_close) (void *);
  int (*c_del) (void *, uint32_t);
  int (*c_dup) (void *, void **, uint32_t);
  int (*c_get) (void *, DBT *, DBT *, uint32_t);
  int (*c_put) (void *, DBT *, DBT *, uint32_t);
  int (*c_am_close) (void *);
  int (*c_am_destroy) (void *);
  void *internal;
  uint32_t flags;
};

/* Flags which changed.  */
#define DB30_TRUNCATE	0x020000

/* Access methods.  */
#define DB30_FIRST		9
#define DB30_NEXT		17
#define DB30_NOOVERWRITE	20

/* Permission flags are changed.  */
#define DB30_RDONLY	0x000010


/* The error values that are needed.  */
#define DB30_KEYEXIST	(-30997)
#define DB30_NOTFOUND	(-30994)