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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2011-2012 Free Software Foundation, Inc.
This 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 3 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 library. If not, see
<http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <mailutils/types.h>
#include <mailutils/dbm.h>
#include <mailutils/util.h>
#include <mailutils/errno.h>
#include <mailutils/error.h>
#include <mailutils/stream.h>
#include <mailutils/io.h>
#include "mudbm.h"
#if defined(WITH_TOKYOCABINET)
#include <tcutil.h>
#include <tchdb.h>
static int
_tc_file_safety (mu_dbm_file_t db, int mode, uid_t owner)
{
return mu_file_safety_check (db->db_name, mode, owner, NULL);
}
int
_tc_get_fd (mu_dbm_file_t db, int *pag, int *dir)
{
TCHDB *hdb = db->db_descr;
*pag = hdb->fd;
if (dir)
*dir = *pag;
return 0;
}
static int
_tc_open (mu_dbm_file_t db, int flags, int mode)
{
int f;
bool result;
mode_t save_um;
TCHDB *hdb;
switch (flags)
{
case MU_STREAM_CREAT:
f = HDBOWRITER | HDBOCREAT;
break;
case MU_STREAM_READ:
f = HDBOREADER;
break;
case MU_STREAM_RDWR:
f = HDBOREADER | HDBOWRITER;
break;
default:
return EINVAL;
}
hdb = tchdbnew ();
save_um = umask (0666 & ~mode);
result = tchdbopen (hdb, db->db_name, f);
umask (save_um);
if (!result)
{
db->db_errno.n = tchdbecode (hdb);
return MU_ERR_FAILURE;
}
db->db_descr = hdb;
return 0;
}
static int
_tc_close (mu_dbm_file_t db)
{
if (db->db_descr)
{
TCHDB *hdb = db->db_descr;
tchdbclose (hdb);
tchdbdel (hdb);
db->db_descr = NULL;
}
return 0;
}
static int
_tc_fetch (mu_dbm_file_t db, struct mu_dbm_datum const *key,
struct mu_dbm_datum *ret)
{
TCHDB *hdb = db->db_descr;
void *ptr;
int retsize;
ptr = tchdbget (hdb, key->mu_dptr, key->mu_dsize, &retsize);
if (ptr)
{
mu_dbm_datum_free (ret);
ret->mu_dptr = ptr;
ret->mu_dsize = retsize;
return 0;
}
else if ((db->db_errno.n = tchdbecode (hdb)) == TCENOREC)
return MU_ERR_NOENT;
return MU_ERR_FAILURE;
}
static int
_tc_store (mu_dbm_file_t db,
struct mu_dbm_datum const *key,
struct mu_dbm_datum const *contents,
int replace)
{
TCHDB *hdb = db->db_descr;
bool result;
if (replace)
result = tchdbput (hdb, key->mu_dptr, key->mu_dsize,
contents->mu_dptr, contents->mu_dsize);
else
result = tchdbputkeep (hdb, key->mu_dptr, key->mu_dsize,
contents->mu_dptr, contents->mu_dsize);
if (result)
return 0;
db->db_errno.n = tchdbecode (hdb);
if (db->db_errno.n == TCEKEEP)
return MU_ERR_EXISTS;
return MU_ERR_FAILURE;
}
static int
_tc_delete (mu_dbm_file_t db, struct mu_dbm_datum const *key)
{
TCHDB *hdb = db->db_descr;
if (tchdbout (hdb, key->mu_dptr, key->mu_dsize))
return 0;
db->db_errno.n = tchdbecode (hdb);
if (db->db_errno.n == TCENOREC)
return MU_ERR_NOENT;
return MU_ERR_FAILURE;
}
static int
_tc_firstkey (mu_dbm_file_t db, struct mu_dbm_datum *ret)
{
TCHDB *hdb = db->db_descr;
void *ptr;
int retsize;
tchdbiterinit (hdb);
ptr = tchdbiternext (hdb, &retsize);
if (ptr)
{
mu_dbm_datum_free (ret);
ret->mu_dptr = ptr;
ret->mu_dsize = retsize;
return 0;
}
else if ((db->db_errno.n = tchdbecode (hdb)) == TCENOREC)
return MU_ERR_NOENT;
return MU_ERR_FAILURE;
}
static int
_tc_nextkey (mu_dbm_file_t db, struct mu_dbm_datum *ret)
{
TCHDB *hdb = db->db_descr;
void *ptr;
int retsize;
ptr = tchdbiternext (hdb, &retsize);
if (ptr)
{
mu_dbm_datum_free (ret);
ret->mu_dptr = ptr;
ret->mu_dsize = retsize;
return 0;
}
else if ((db->db_errno.n = tchdbecode (hdb)) == TCENOREC)
return MU_ERR_NOENT;
return MU_ERR_FAILURE;
}
static void
_tc_datum_free (struct mu_dbm_datum *datum)
{
free (datum->mu_dptr);
}
static char const *
_tc_strerror (mu_dbm_file_t db)
{
return tchdberrmsg (db->db_errno.n);
}
struct mu_dbm_impl _mu_dbm_tokyocabinet = {
"tc",
_tc_file_safety,
_tc_get_fd,
_tc_open,
_tc_close,
_tc_fetch,
_tc_store,
_tc_delete,
_tc_firstkey,
_tc_nextkey,
_tc_datum_free,
_tc_strerror
};
#endif
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