add uploadsdirectory param

Signed-off-by: Lorenzo Tanganelli <[email protected]>

apps/dav/lib/Upload/UploadHome.php

@@ -97,10 +97,43 @@ private function getView() {
 		$rootView = new View();
 		$user = \OC::$server->getUserSession()->getUser();
 		Filesystem::initMountPoints($user->getUID());
-		if (!$rootView->file_exists('/' . $user->getUID() . '/uploads')) {
-			$rootView->mkdir('/' . $user->getUID() . '/uploads');
+
+		$config = \OC::$server->getConfig();
+
+		$allowSymlinks = $config->getSystemValueBool('localstorage.allowsymlinks', false);
+		$uploadsDirectory = $config->getSystemValue('uploadsdirectory', '');
+		$user_path = '/' . $user->getUID() . '/uploads';
+        $absolute_user_path = $rootView->getLocalFile($user_path);
+
+		if ($allowSymlinks && $uploadsDirectory != '') {
+			$upload_user_path = $uploadsDirectory . $user_path;
+
+			if (!$rootView->file_exists($user_path) || !is_link($link_user_path) || ($upload_user_path != readlink($absolute_user_path)) ) {
+
+                if (!is_dir($upload_user_path)) {
+                    mkdir($upload_user_path, 0750, true);
+                }
+
+				// useful if link is broken due to $upload_user_path changes
+                if (is_link($absolute_user_path)) {
+                    unlink($absolute_user_path);
+                } else if (is_dir($absolute_user_path)) {
+                    $rootView->rmdir($user_path);
+                }
+                symlink($upload_user_path, $link_user_path);
+
+			}
+
+		} else {
+            if (is_link($absolute_user_path)) {
+                unlink($absolute_user_path);
+            }
+			if (!$rootView->file_exists($user_path)) {
+				$rootView->mkdir($user_path);
+			}
 		}
-		return new View('/' . $user->getUID() . '/uploads');
+
+		return new View($user_path);
 	}
 
 	private function getStorage() {

config/config.sample.php

@@ -1897,6 +1897,14 @@
  */
 'updatedirectory' => '',
 
+/**
+ * Override where Nextcloud stores uploads user files while uploading (chunks). Useful in situations
+ * where the default `<user_id>/uploads` is on network disk like NFS.
+ * Defaults to the value of `` if unset. Require `localstorage.allowsymlinks` set to `true` because
+ * impementation require symlink to works.
+ */
+'uploadsdirectory' => '',
+
 /**
  * Blacklist a specific file or files and disallow the upload of files
  * with this name. ``.htaccess`` is blocked by default.