diff -r ae61523bce20 -r 2f71f4ee247a libidav/resource.c
--- a/libidav/resource.c	Thu Oct 03 18:52:51 2024 +0200
+++ b/libidav/resource.c	Sun Oct 06 18:18:04 2024 +0200
@@ -127,7 +127,6 @@
     if(!properties) return;
     
     CxIterator i = cxMapIteratorValues(properties);
-    DavProperty *property;
     cx_foreach(DavProperty*, property, i) {
         // TODO: free everything
         dav_session_free(sn, property);
@@ -607,11 +606,16 @@
     return property;
 }
 
-void dav_set_string_property(DavResource *res, char *name, char *value) {
+int dav_set_string_property(DavResource *res, char *name, char *value) {
     char *pns;
     char *pname;
     dav_get_property_namespace_str(res->session->context, name, &pns, &pname);
+    if(!pns) {
+        res->session->errorstr = "Property namespace not found";
+        return 1;
+    }
     dav_set_string_property_ns(res, pns, pname, value);
+    return 0;
 }
 
 static int add2propertylist(const CxAllocator *a, CxList **list, DavProperty *property) {
@@ -730,7 +734,7 @@
 DavPropName* dav_get_property_names(DavResource *res, size_t *count) {
     DavResourceData *data = res->data;
     
-    *count = data->properties->size;
+    *count = cxMapSize(data->properties);
     DavPropName *names = dav_session_calloc(
             res->session,
             *count,
@@ -738,15 +742,10 @@
     
     
     CxIterator i = cxMapIteratorValues(data->properties);
-    DavProperty *value;
-    int j = 0;
     cx_foreach(DavProperty*, value, i) {
-        DavPropName *name = &names[j];
-        
+        DavPropName *name = &names[i.index];
         name->ns = value->ns->name;
         name->name = value->name;
-        
-        j++;
     }
     
     qsort(names, *count, sizeof(DavPropName), compare_propname);
@@ -998,7 +997,7 @@
             if(data->crypto_remove) {
                 CxIterator i = cxListIterator(data->crypto_remove);
                 cx_foreach(DavProperty *, property, i) {
-                    if(crypto_props->size == 0) {
+                    if(cxMapSize(crypto_props) == 0) {
                         break; // map already empty, can't remove any more
                     }
 
@@ -1509,14 +1508,13 @@
     
     // create an xml document containing all properties
     CxMap *nsmap = cxHashMapCreate(cxDefaultAllocator, CX_STORE_POINTERS, 8);
-    nsmap->simple_destructor = free;
+    cxDefineDestructor(nsmap, free);
     cxMapPut(nsmap, cx_hash_key_str("DAV:"), strdup("D"));
     
     cxBufferPutString(content, "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
     cxBufferPutString(content, "<D:prop xmlns:D=\"DAV:\">\n");
     
     CxIterator i = cxMapIteratorValues(properties);
-    DavProperty *prop;
     cx_foreach(DavProperty*, prop, i) {
         DavXmlNode pnode;
         pnode.type = DAV_XML_ELEMENT;
@@ -1600,15 +1598,15 @@
                     dav_session_strdup(sn, (const char*)n->ns->prefix) : NULL;
             property->value = n->children ? dav_convert_xml(sn, n->children) : NULL;
             
-            cxmutstr key = dav_property_key(property->ns->name, property->name);
-            cxMapPut(map, cx_hash_key(key.ptr, key.length), property);
-            free(key.ptr);
+            cxmutstr propkey = dav_property_key(property->ns->name, property->name);
+            cxMapPut(map, cx_hash_key_cxstr(propkey), property);
+            cx_strfree(&propkey);
         }
         n = n->next;
     }
     
     xmlFreeDoc(doc);
-    if(map->size == 0) {
+    if(cxMapSize(map) == 0) {
         cxMapDestroy(map);
         return NULL;
     }