Update phase progress: Check if callback is defined.

csync/src/csync_owncloud.c

@@ -541,7 +541,10 @@ static struct listdir_context *fetch_resource_list(csync_owncloud_ctx_t *ctx, co
         }
     }
 
-    ctx->csync_ctx->callbacks.update_callback(false, curi, ctx->csync_ctx->callbacks.update_callback_userdata);
+    if( ctx->csync_ctx->callbacks.update_callback ) {
+	ctx->csync_ctx->callbacks.update_callback(false, curi, 
+              ctx->csync_ctx->callbacks.update_callback_userdata);
+    }
 
     fetchCtx = c_malloc( sizeof( struct listdir_context ));
     if (!fetchCtx) {

csync/src/csync_owncloud_recursive_propfind.c

@@ -54,7 +54,9 @@ struct listdir_context *get_listdir_context_from_recursive_cache(csync_owncloud_
         DEBUG_WEBDAV("get_listdir_context_from_recursive_cache No element %s in cache found", curi);
         return NULL;
     }
+    if( ctx->csync_ctx->callbacks.update_callback ) {
         ctx->csync_ctx->callbacks.update_callback(false, curi, ctx->csync_ctx->callbacks.update_callback_userdata);
+    }
 
     /* Out of the element, create a listdir_context.. if we could be sure that it is immutable, we could ref instead.. need to investigate */
     fetchCtx = c_malloc( sizeof( struct listdir_context ));
@@ -147,9 +149,11 @@ static void propfind_results_recursive_callback(void *userdata,
             // a recursive PROPFIND might take some time but we still want to
             // be informed. Later when get_listdir_context_from_recursive_cache is
             // called the DB queries might be the problem causing slowness, so do it again there then.
+            if( ctx->csync_ctx->callbacks.update_callback ) {
 		ctx->csync_ctx->callbacks.update_callback(false, path, ctx->csync_ctx->callbacks.update_callback_userdata);
 	    }
         }
+    }
 
     /* Check for parent in tree. If exists: Insert it into the children elements there */
     parentPath = ne_path_parent(uri->path);
@@ -196,7 +200,9 @@ void fetch_resource_list_recursive(csync_owncloud_ctx_t *ctx, const char *uri, c
     int depth = NE_DEPTH_INFINITE;
 
     DEBUG_WEBDAV("fetch_resource_list_recursive Starting recursive propfind %s %s", uri, curi);
+    if( ctx->csync_ctx->callbacks.update_callback ) {
 	ctx->csync_ctx->callbacks.update_callback(false, curi, ctx->csync_ctx->callbacks.update_callback_userdata);
+    }
 
     /* do a propfind request and parse the results in the results function, set as callback */
     hdl = ne_propfind_create(ctx->dav_session.ctx, curi, depth);

csync/src/vio/csync_vio.c

@@ -48,7 +48,9 @@ csync_vio_handle_t *csync_vio_opendir(CSYNC *ctx, const char *name) {
       return owncloud_opendir(ctx, name);
       break;
     case LOCAL_REPLICA:
+	if( ctx->callbacks.update_callback ) {
 	  ctx->callbacks.update_callback(ctx->replica, name, ctx->callbacks.update_callback_userdata);
+	}
       return csync_vio_local_opendir(name);
       break;
     default: