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-rw-r--r--dbm/apr_dbm_sdbm.c223
1 files changed, 223 insertions, 0 deletions
diff --git a/dbm/apr_dbm_sdbm.c b/dbm/apr_dbm_sdbm.c
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+++ b/dbm/apr_dbm_sdbm.c
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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_FOPEN_READ | APR_FOPEN_BUFFERED)
+#define APR_DBM_DBMODE_RW (APR_FOPEN_READ | APR_FOPEN_WRITE)
+#define APR_DBM_DBMODE_RWCREATE (APR_FOPEN_READ | APR_FOPEN_WRITE | APR_FOPEN_CREATE)
+#define APR_DBM_DBMODE_RWTRUNC (APR_FOPEN_READ | APR_FOPEN_WRITE | APR_FOPEN_CREATE | \
+ APR_FOPEN_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_sdbm_datum_t rd;
+
+ (void)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 */