Adding upstream version 1.6.3.upstream/1.6.3upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 265 insertions, 0 deletions

diff --git a/dbm/apr_dbm_gdbm.c b/dbm/apr_dbm_gdbm.c
new file mode 100644
index 0000000..4d56349
--- /dev/null
+++ b/dbm/apr_dbm_gdbm.c
@@ -0,0 +1,265 @@
+/* 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 "apu_config.h"
+#include "apu.h"
+#include "apr_strings.h"
+
+#if APR_HAVE_STDLIB_H
+#include <stdlib.h>     /* for free() */
+#endif
+
+#if APU_HAVE_GDBM
+#include "apr_dbm_private.h"
+
+#include <gdbm.h>
+
+#define APR_DBM_DBMODE_RO       GDBM_READER
+#define APR_DBM_DBMODE_RW       GDBM_WRITER
+#define APR_DBM_DBMODE_RWCREATE GDBM_WRCREAT
+#define APR_DBM_DBMODE_RWTRUNC  GDBM_NEWDB
+
+/* map a GDBM error to an apr_status_t */
+static apr_status_t g2s(int gerr)
+{
+    if (gerr == -1) {
+        if (gdbm_errno == GDBM_NO_ERROR)
+           return APR_SUCCESS;
+        return APR_OS_START_USEERR + gdbm_errno;
+    }
+
+    return APR_SUCCESS;
+}
+
+static apr_status_t gdat2s(datum d)
+{
+    if (d.dptr == NULL) {
+        if (gdbm_errno == GDBM_NO_ERROR || gdbm_errno == GDBM_ITEM_NOT_FOUND)
+           return APR_SUCCESS;
+        return APR_OS_START_USEERR + gdbm_errno;
+    }
+
+    return APR_SUCCESS;
+}
+
+static apr_status_t datum_cleanup(void *dptr)
+{
+    if (dptr)
+        free(dptr);
+
+    return APR_SUCCESS;
+}
+
+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 = NULL;
+    else
+        dbm->errmsg = gdbm_strerror(dbm_said - APR_OS_START_USEERR);
+
+    return dbm_said;
+}
+
+/* --------------------------------------------------------------------------
+**
+** DEFINE THE VTABLE FUNCTIONS FOR GDBM
+*/
+
+static apr_status_t vt_gdbm_open(apr_dbm_t **pdb, const char *pathname,
+                                 apr_int32_t mode, apr_fileperms_t perm,
+                                 apr_pool_t *pool)
+{
+    GDBM_FILE 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;
+    }
+
+    /* Note: stupid cast to get rid of "const" on the pathname */
+    file = gdbm_open((char *) pathname, 0, dbmode, apr_posix_perms2mode(perm),
+                     NULL);
+
+    if (file == NULL)
+        return APR_OS_START_USEERR + gdbm_errno;
+
+    /* we have an open database... return it */
+    *pdb = apr_pcalloc(pool, sizeof(**pdb));
+    (*pdb)->pool = pool;
+    (*pdb)->type = &apr_dbm_type_gdbm;
+    (*pdb)->file = file;
+
+    /* ### register a cleanup to close the DBM? */
+
+    return APR_SUCCESS;
+}
+
+static void vt_gdbm_close(apr_dbm_t *dbm)
+{
+    gdbm_close(dbm->file);
+}
+
+static apr_status_t vt_gdbm_fetch(apr_dbm_t *dbm, apr_datum_t key,
+                                  apr_datum_t *pvalue)
+{
+    datum kd, rd;
+
+    kd.dptr = key.dptr;
+    kd.dsize = key.dsize;
+
+    rd = gdbm_fetch(dbm->file, kd);
+
+    pvalue->dptr = rd.dptr;
+    pvalue->dsize = rd.dsize;
+
+    if (pvalue->dptr)
+        apr_pool_cleanup_register(dbm->pool, pvalue->dptr, datum_cleanup,
+                                  apr_pool_cleanup_null);
+    else
+        pvalue->dsize = 0;
+
+    /* 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, gdat2s(rd));
+}
+
+static apr_status_t vt_gdbm_store(apr_dbm_t *dbm, apr_datum_t key,
+                                  apr_datum_t value)
+{
+    int rc;
+    datum kd, vd;
+
+    kd.dptr = key.dptr;
+    kd.dsize = key.dsize;
+
+    vd.dptr = value.dptr;
+    vd.dsize = value.dsize;
+
+    rc = gdbm_store(dbm->file, kd, vd, GDBM_REPLACE);
+
+    /* store any error info into DBM, and return a status code. */
+    return set_error(dbm, g2s(rc));
+}
+
+static apr_status_t vt_gdbm_del(apr_dbm_t *dbm, apr_datum_t key)
+{
+    int rc;
+    datum kd;
+
+    kd.dptr = key.dptr;
+    kd.dsize = key.dsize;
+
+    rc = gdbm_delete(dbm->file, kd);
+
+    /* store any error info into DBM, and return a status code. */
+    return set_error(dbm, g2s(rc));
+}
+
+static int vt_gdbm_exists(apr_dbm_t *dbm, apr_datum_t key)
+{
+    datum kd;
+
+    kd.dptr = key.dptr;
+    kd.dsize = key.dsize;
+
+    return gdbm_exists(dbm->file, kd) != 0;
+}
+
+static apr_status_t vt_gdbm_firstkey(apr_dbm_t *dbm, apr_datum_t *pkey)
+{
+    datum rd;
+
+    rd = gdbm_firstkey(dbm->file);
+
+    pkey->dptr = rd.dptr;
+    pkey->dsize = rd.dsize;
+
+    if (pkey->dptr)
+        apr_pool_cleanup_register(dbm->pool, pkey->dptr, datum_cleanup,
+                                  apr_pool_cleanup_null);
+    else
+        pkey->dsize = 0;
+
+    /* store any error info into DBM, and return a status code. */
+    return set_error(dbm, gdat2s(rd));
+}
+
+static apr_status_t vt_gdbm_nextkey(apr_dbm_t *dbm, apr_datum_t *pkey)
+{
+    datum kd, rd;
+
+    kd.dptr = pkey->dptr;
+    kd.dsize = pkey->dsize;
+
+    rd = gdbm_nextkey(dbm->file, kd);
+
+    pkey->dptr = rd.dptr;
+    pkey->dsize = rd.dsize;
+
+    if (pkey->dptr)
+        apr_pool_cleanup_register(dbm->pool, pkey->dptr, datum_cleanup,
+                                  apr_pool_cleanup_null);
+    else
+        pkey->dsize = 0;
+
+    /* store any error info into DBM, and return a status code. */
+    return set_error(dbm, gdat2s(rd));
+}
+
+static void vt_gdbm_freedatum(apr_dbm_t *dbm, apr_datum_t data)
+{
+    (void) apr_pool_cleanup_run(dbm->pool, data.dptr, datum_cleanup);
+}
+
+static void vt_gdbm_usednames(apr_pool_t *pool, const char *pathname,
+                              const char **used1, const char **used2)
+{
+    *used1 = apr_pstrdup(pool, pathname);
+    *used2 = NULL;
+}
+
+APU_MODULE_DECLARE_DATA const apr_dbm_type_t apr_dbm_type_gdbm = {
+    "gdbm",
+    vt_gdbm_open,
+    vt_gdbm_close,
+    vt_gdbm_fetch,
+    vt_gdbm_store,
+    vt_gdbm_del,
+    vt_gdbm_exists,
+    vt_gdbm_firstkey,
+    vt_gdbm_nextkey,
+    vt_gdbm_freedatum,
+    vt_gdbm_usednames
+};
+
+#endif /* APU_HAVE_GDBM */