Adjust SMB permissions on the root

apps/files_external/lib/Lib/Storage/SMB.php

@@ -162,10 +162,48 @@ class SMB extends Common implements INotifyStorage {
 	 * @return array
 	 */
 	protected function formatInfo($info) {
-		return array(
+		$result = [
 			'size' => $info->getSize(),
-			'mtime' => $info->getMTime()
-		);
+			'mtime' => $info->getMTime(),
+		];
+		if ($info->isDirectory()) {
+			$result['type'] = 'dir';
+		} else {
+			$result['type'] = 'file';
+		}
+		return $result;
+	}
+
+	/**
+	 * Rename the files. If the source or the target is the root, the rename won't happen.
+	 *
+	 * @param string $source the old name of the path
+	 * @param string $target the new name of the path
+	 * @return bool true if the rename is successful, false otherwise
+	 */
+	public function rename($source, $target) {
+		$this->log("enter: rename('$source', '$target')", Util::DEBUG);
+
+		if ($this->isRootDir($source) || $this->isRootDir($target)) {
+			$this->log("refusing to rename \"$source\" to \"$target\"");
+			return $this->leave(__FUNCTION__, false);
+		}
+
+		try {
+			$result = $this->share->rename($this->root . $source, $this->root . $target);
+			$this->removeFromCache($this->root . $source);
+			$this->removeFromCache($this->root . $target);
+		} catch (AlreadyExistsException $e) {
+			$this->unlink($target);
+			$result = $this->share->rename($this->root . $source, $this->root . $target);
+			$this->removeFromCache($this->root . $source);
+			$this->removeFromCache($this->root . $target);
+			$this->swallow(__FUNCTION__, $e);
+		} catch (\Exception $e) {
+			$this->swallow(__FUNCTION__, $e);
+			$result = false;
+		}
+		return $this->leave(__FUNCTION__, $result);
 	}
 
 	/**
@@ -220,6 +258,13 @@ class SMB extends Common implements INotifyStorage {
 	 * @return bool
 	 */
 	public function unlink($path) {
+		$this->log('enter: '.__FUNCTION__."($path)");
+
+		if ($this->isRootDir($path)) {
+			$this->log("refusing to unlink \"$path\"");
+			return $this->leave(__FUNCTION__, false);
+		}
+
 		try {
 			if ($this->is_dir($path)) {
 				return $this->rmdir($path);
@@ -343,6 +388,13 @@ class SMB extends Common implements INotifyStorage {
 	}
 
 	public function rmdir($path) {
+		$this->log('enter: '.__FUNCTION__."($path)");
+
+		if ($this->isRootDir($path)) {
+			$this->log("refusing to delete \"$path\"");
+			return $this->leave(__FUNCTION__, false);
+		}
+
 		try {
 			$this->statCache = array();
 			$content = $this->share->dir($this->buildPath($path));
@@ -439,6 +491,8 @@ class SMB extends Common implements INotifyStorage {
 	}
 
 	public function isUpdatable($path) {
+		$this->log('enter: '.__FUNCTION__."($path)");
+		$result = false;
 		try {
 			$info = $this->getFileInfo($path);
 			// following windows behaviour for read-only folders: they can be written into
@@ -449,9 +503,12 @@ class SMB extends Common implements INotifyStorage {
 		} catch (ForbiddenException $e) {
 			return false;
 		}
+		return $this->leave(__FUNCTION__, $result);
 	}
 
 	public function isDeletable($path) {
+		$this->log('enter: '.__FUNCTION__."($path)");
+		$result = false;
 		try {
 			$info = $this->getFileInfo($path);
 			return !$info->isHidden() && !$info->isReadOnly();