1 files changed, 140 insertions, 0 deletions
diff --git a/modules/dav/main/liveprop.c b/modules/dav/main/liveprop.c
new file mode 100644
index 0000000..d170d75
--- /dev/null
+++ b/modules/dav/main/liveprop.c
@@ -0,0 +1,140 @@
+/* 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_pools.h"
+#include "apr_hash.h"
+#include "apr_errno.h"
+#include "apr_strings.h"
+#include "util_xml.h"   /* for apr_text_header */
+#include "mod_dav.h"
+
+
+static apr_hash_t *dav_liveprop_uris = NULL;
+static long dav_liveprop_count = 0;
+
+
+static apr_status_t dav_cleanup_liveprops(void *ctx)
+{
+    dav_liveprop_uris = NULL;
+    dav_liveprop_count = 0;
+    return APR_SUCCESS;
+}
+
+static void dav_register_liveprop_namespace(apr_pool_t *p, const char *uri)
+{
+    long value;
+
+    if (dav_liveprop_uris == NULL) {
+        dav_liveprop_uris = apr_hash_make(p);
+        apr_pool_cleanup_register(p, NULL, dav_cleanup_liveprops, apr_pool_cleanup_null);
+    }
+
+    value = (long)apr_hash_get(dav_liveprop_uris, uri, APR_HASH_KEY_STRING);
+    if (value != 0) {
+        /* already registered */
+        return;
+    }
+
+    /* start at 1, and count up */
+    apr_hash_set(dav_liveprop_uris, uri, APR_HASH_KEY_STRING,
+                 (void *)++dav_liveprop_count);
+}
+
+DAV_DECLARE(long) dav_get_liveprop_ns_index(const char *uri)
+{
+    return (long)apr_hash_get(dav_liveprop_uris, uri, APR_HASH_KEY_STRING);
+}
+
+DAV_DECLARE(long) dav_get_liveprop_ns_count(void)
+{
+    return dav_liveprop_count;
+}
+
+DAV_DECLARE(void) dav_add_all_liveprop_xmlns(apr_pool_t *p,
+                                             apr_text_header *phdr)
+{
+    apr_hash_index_t *idx = apr_hash_first(p, dav_liveprop_uris);
+
+    for ( ; idx != NULL; idx = apr_hash_next(idx) ) {
+        const void *key;
+        void *val;
+        const char *s;
+
+        apr_hash_this(idx, &key, NULL, &val);
+
+        s = apr_psprintf(p, " xmlns:lp%ld=\"%s\"", (long)val, (const char *)key);
+        apr_text_append(p, phdr, s);
+    }
+}
+
+DAV_DECLARE(int) dav_do_find_liveprop(const char *ns_uri, const char *name,
+                                      const dav_liveprop_group *group,
+                                      const dav_hooks_liveprop **hooks)
+{
+    const char * const *uris = group->namespace_uris;
+    const dav_liveprop_spec *scan;
+    int ns;
+
+    /* first: locate the namespace in the namespace table */
+    for (ns = 0; uris[ns] != NULL; ++ns)
+        if (strcmp(ns_uri, uris[ns]) == 0)
+            break;
+    if (uris[ns] == NULL) {
+        /* not our property (the namespace matched none of ours) */
+        return 0;
+    }
+
+    /* second: look for the property in the liveprop specs */
+    for (scan = group->specs; scan->name != NULL; ++scan)
+        if (ns == scan->ns && strcmp(name, scan->name) == 0) {
+            *hooks = group->hooks;
+            return scan->propid;
+        }
+
+    /* not our property (same namespace, but no matching prop name) */
+    return 0;
+}
+
+DAV_DECLARE(long) dav_get_liveprop_info(int propid,
+                                       const dav_liveprop_group *group,
+                                       const dav_liveprop_spec **info)
+{
+    const dav_liveprop_spec *scan;
+
+    for (scan = group->specs; scan->name != NULL; ++scan) {
+        if (scan->propid == propid) {
+            *info = scan;
+
+            /* map the provider-local NS into a global NS index */
+            return dav_get_liveprop_ns_index(group->namespace_uris[scan->ns]);
+        }
+    }
+
+    /* assert: should not reach this point */
+    *info = NULL;
+    return 0;
+}
+
+DAV_DECLARE(void) dav_register_liveprop_group(apr_pool_t *p,
+                                              const dav_liveprop_group *group)
+{
+    /* register the namespace URIs */
+    const char * const * uris = group->namespace_uris;
+
+    for ( ; *uris != NULL; ++uris) {
+        dav_register_liveprop_namespace(p, *uris);
+    }
+}