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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "apr_strings.h"
#define APR_WANT_MEMFUNC
#define APR_WANT_STRFUNC
#include "apr_want.h"
#include "apu_config.h"
#include "apu.h"
#if APU_HAVE_SDBM
#include "apr_dbm_private.h"
#include "apr_sdbm.h"
#define APR_DBM_DBMODE_RO (APR_READ | APR_BUFFERED)
#define APR_DBM_DBMODE_RW (APR_READ | APR_WRITE)
#define APR_DBM_DBMODE_RWCREATE (APR_READ | APR_WRITE | APR_CREATE)
#define APR_DBM_DBMODE_RWTRUNC (APR_READ | APR_WRITE | APR_CREATE | \
APR_TRUNCATE)
static apr_status_t set_error(apr_dbm_t *dbm, apr_status_t dbm_said)
{
dbm->errcode = dbm_said;
if (dbm_said != APR_SUCCESS) {
dbm->errmsg = apr_psprintf(dbm->pool, "%pm", &dbm_said);
} else {
dbm->errmsg = NULL;
}
return dbm_said;
}
/* --------------------------------------------------------------------------
**
** DEFINE THE VTABLE FUNCTIONS FOR SDBM
*/
static apr_status_t vt_sdbm_open(apr_dbm_t **pdb, const char *pathname,
apr_int32_t mode, apr_fileperms_t perm,
apr_pool_t *pool)
{
apr_sdbm_t *file;
int dbmode;
*pdb = NULL;
switch (mode) {
case APR_DBM_READONLY:
dbmode = APR_DBM_DBMODE_RO;
break;
case APR_DBM_READWRITE:
dbmode = APR_DBM_DBMODE_RW;
break;
case APR_DBM_RWCREATE:
dbmode = APR_DBM_DBMODE_RWCREATE;
break;
case APR_DBM_RWTRUNC:
dbmode = APR_DBM_DBMODE_RWTRUNC;
break;
default:
return APR_EINVAL;
}
{
apr_status_t rv;
rv = apr_sdbm_open(&file, pathname, dbmode, perm, pool);
if (rv != APR_SUCCESS)
return rv;
}
/* we have an open database... return it */
*pdb = apr_pcalloc(pool, sizeof(**pdb));
(*pdb)->pool = pool;
(*pdb)->type = &apr_dbm_type_sdbm;
(*pdb)->file = file;
/* ### register a cleanup to close the DBM? */
return APR_SUCCESS;
}
static void vt_sdbm_close(apr_dbm_t *dbm)
{
apr_sdbm_close(dbm->file);
}
static apr_status_t vt_sdbm_fetch(apr_dbm_t *dbm, apr_datum_t key,
apr_datum_t *pvalue)
{
apr_status_t rv;
apr_sdbm_datum_t kd, rd;
kd.dptr = key.dptr;
kd.dsize = (int)key.dsize;
rv = apr_sdbm_fetch(dbm->file, &rd, kd);
pvalue->dptr = rd.dptr;
pvalue->dsize = rd.dsize;
/* store the error info into DBM, and return a status code. Also, note
that *pvalue should have been cleared on error. */
return set_error(dbm, rv);
}
static apr_status_t vt_sdbm_store(apr_dbm_t *dbm, apr_datum_t key,
apr_datum_t value)
{
apr_status_t rv;
apr_sdbm_datum_t kd, vd;
kd.dptr = key.dptr;
kd.dsize = (int)key.dsize;
vd.dptr = value.dptr;
vd.dsize = (int)value.dsize;
rv = apr_sdbm_store(dbm->file, kd, vd, APR_SDBM_REPLACE);
/* store any error info into DBM, and return a status code. */
return set_error(dbm, rv);
}
static apr_status_t vt_sdbm_del(apr_dbm_t *dbm, apr_datum_t key)
{
apr_status_t rv;
apr_sdbm_datum_t kd;
kd.dptr = key.dptr;
kd.dsize = (int)key.dsize;
rv = apr_sdbm_delete(dbm->file, kd);
/* store any error info into DBM, and return a status code. */
return set_error(dbm, rv);
}
static int vt_sdbm_exists(apr_dbm_t *dbm, apr_datum_t key)
{
int exists;
apr_sdbm_datum_t vd, kd;
kd.dptr = key.dptr;
kd.dsize = (int)key.dsize;
if (apr_sdbm_fetch(dbm->file, &vd, kd) != APR_SUCCESS)
exists = 0;
else
exists = vd.dptr != NULL;
return exists;
}
static apr_status_t vt_sdbm_firstkey(apr_dbm_t *dbm, apr_datum_t *pkey)
{
apr_status_t rv;
apr_sdbm_datum_t rd;
rv = apr_sdbm_firstkey(dbm->file, &rd);
pkey->dptr = rd.dptr;
pkey->dsize = rd.dsize;
/* store any error info into DBM, and return a status code. */
return set_error(dbm, rv);
}
static apr_status_t vt_sdbm_nextkey(apr_dbm_t *dbm, apr_datum_t *pkey)
{
apr_status_t rv;
apr_sdbm_datum_t rd;
rv = apr_sdbm_nextkey(dbm->file, &rd);
pkey->dptr = rd.dptr;
pkey->dsize = rd.dsize;
/* store any error info into DBM, and return a status code. */
return set_error(dbm, APR_SUCCESS);
}
static void vt_sdbm_freedatum(apr_dbm_t *dbm, apr_datum_t data)
{
}
static void vt_sdbm_usednames(apr_pool_t *pool, const char *pathname,
const char **used1, const char **used2)
{
*used1 = apr_pstrcat(pool, pathname, APR_SDBM_DIRFEXT, NULL);
*used2 = apr_pstrcat(pool, pathname, APR_SDBM_PAGFEXT, NULL);
}
APU_MODULE_DECLARE_DATA const apr_dbm_type_t apr_dbm_type_sdbm = {
"sdbm",
vt_sdbm_open,
vt_sdbm_close,
vt_sdbm_fetch,
vt_sdbm_store,
vt_sdbm_del,
vt_sdbm_exists,
vt_sdbm_firstkey,
vt_sdbm_nextkey,
vt_sdbm_freedatum,
vt_sdbm_usednames
};
#endif /* APU_HAVE_SDBM */
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