some performance improvements, check for system wide mounts only once while writing share keys

apps/files_encryption/lib/keymanager.php

@@ -335,58 +335,26 @@ class Keymanager {
 	 * @brief store share key
 	 *
 	 * @param \OC_FilesystemView $view
-	 * @param string $path relative path of the file, including filename
-	 * @param $userId
+	 * @param string $path where the share key is stored
 	 * @param $shareKey
-	 * @internal param string $key
-	 * @internal param string $dbClassName
 	 * @return bool true/false
 	 * @note The keyfile is not encrypted here. Client code must
 	 * asymmetrically encrypt the keyfile before passing it to this method
 	 */
-	public static function setShareKey(\OC_FilesystemView $view, $path, $userId, $shareKey) {
-
-		// Here we need the currently logged in user, while userId can be a different user
-		$util = new Util($view, \OCP\User::getUser());
-
-		list($owner, $filename) = $util->getUidAndFilename($path);
-
-		// in case of system wide mount points the keys are stored directly in the data directory
-		if (self::isSystemWideMountPoint($filename)) {
-			$basePath = '/files_encryption/share-keys';
-		} else {
-			$basePath = '/' . $owner . '/files_encryption/share-keys';
-		}
-
-		$shareKeyPath = self::keySetPreparation($view, $filename, $basePath, $owner);
-
-		// try reusing key file if part file
-		if (self::isPartialFilePath($shareKeyPath)) {
-			$writePath = $basePath . '/' . self::fixPartialFilePath($shareKeyPath) . '.' . $userId . '.shareKey';
-		} else {
-			$writePath = $basePath . '/' . $shareKeyPath . '.' . $userId . '.shareKey';
-		}
+	private static function setShareKey(\OC_FilesystemView $view, $path, $shareKey) {
 
 		$proxyStatus = \OC_FileProxy::$enabled;
 		\OC_FileProxy::$enabled = false;
 
-		$result = $view->file_put_contents($writePath, $shareKey);
+		$result = $view->file_put_contents($path, $shareKey);
 
 		\OC_FileProxy::$enabled = $proxyStatus;
 
-		if (
-			is_int($result)
-			&& $result > 0
-		) {
-
+		if (is_int($result) && $result > 0) {
 			return true;
-
 		} else {
-
 			return false;
-
 		}
-
 	}
 
 	/**
@@ -400,23 +368,40 @@ class Keymanager {
 
 		// $shareKeys must be  an array with the following format:
 		// [userId] => [encrypted key]
+		// Here we need the currently logged in user, while userId can be a different user
+		$util = new Util($view, \OCP\User::getUser());
+
+		list($owner, $filename) = $util->getUidAndFilename($path);
+
+		// in case of system wide mount points the keys are stored directly in the data directory
+		if (self::isSystemWideMountPoint($filename)) {
+			$basePath = '/files_encryption/share-keys';
+		} else {
+			$basePath = '/' . $owner . '/files_encryption/share-keys';
+		}
+
+		$shareKeyPath = self::keySetPreparation($view, $filename, $basePath, $owner);
 
 		$result = true;
 
 		foreach ($shareKeys as $userId => $shareKey) {
 
-			if (!self::setShareKey($view, $path, $userId, $shareKey)) {
+			// try reusing key file if part file
+			if (self::isPartialFilePath($shareKeyPath)) {
+				$writePath = $basePath . '/' . self::fixPartialFilePath($shareKeyPath) . '.' . $userId . '.shareKey';
+			} else {
+				$writePath = $basePath . '/' . $shareKeyPath . '.' . $userId . '.shareKey';
+			}
+
+			if (!self::setShareKey($view, $writePath, $shareKey)) {
 
 				// If any of the keys are not set, flag false
 				$result = false;
-
 			}
-
 		}
 
 		// Returns false if any of the keys weren't set
 		return $result;
-
 	}
 
 	/**