Make sure mountOptions keep their data type

str_replace for $user substitution was converting the data type of
mountOptions to string. This fix prevents this to happen by making sure
only strings are processed by substitution.

Also added a int conversion when reading the watcher policy

apps/files_external/lib/config.php

@@ -146,8 +146,6 @@ class OC_Mount_Config {
 	public static function getAbsoluteMountPoints($user) {
 		$mountPoints = array();
 
-		$datadir = \OC_Config::getValue("datadirectory", \OC::$SERVERROOT . "/data");
-
 		$backends = self::getBackends();
 
 		// Load system mount points
@@ -277,12 +275,21 @@ class OC_Mount_Config {
 	/**
 	 * fill in the correct values for $user
 	 *
-	 * @param string $user
-	 * @param string $input
+	 * @param string $user user value
+	 * @param string|array $input
 	 * @return string
 	 */
 	private static function setUserVars($user, $input) {
-		return str_replace('$user', $user, $input);
+		if (is_array($input)) {
+			foreach ($input as &$value) {
+				if (is_string($value)) {
+					$value = str_replace('$user', $user, $value);
+				}
+			}
+		} else {
+			$input = str_replace('$user', $user, $input);
+		}
+		return $input;
 	}
 
 

apps/files_external/tests/mountconfig.php

@@ -120,7 +120,6 @@ class Test_Mount_Config extends \Test\TestCase {
 	private $dataDir;
 	private $userHome;
 	private $oldAllowedBackends;
-	private $allBackends;
 
 	const TEST_USER1 = 'user1';
 	const TEST_USER2 = 'user2';
@@ -210,6 +209,11 @@ class Test_Mount_Config extends \Test\TestCase {
 		return json_decode(file_get_contents($configFile), true);
 	}
 
+	private function writeGlobalConfig($config) {
+		$configFile = $this->dataDir . '/mount.json';
+		file_put_contents($configFile, json_encode($config));
+	}
+
 	/**
 	 * Reads the user config, for checking
 	 */
@@ -627,6 +631,51 @@ class Test_Mount_Config extends \Test\TestCase {
 		$this->assertEquals($mountConfig, $savedMountConfig);
 	}
 
+	public function testVariableSubstitution() {
+		$legacyBackendOptions = [
+			'user' => 'someuser',
+			'password' => 'somepassword',
+			'replacethis' => '$user',
+		];
+		$legacyBackendOptions = \OC_Mount_Config::encryptPasswords($legacyBackendOptions);
+
+		$legacyConfig = [
+			'class' => '\OC\Files\Storage\SMB',
+			'options' => $legacyBackendOptions,
+			'mountOptions' => ['preview' => false, 'int' => 1],
+		];
+		// different mount options
+		$legacyConfig2 = [
+			'class' => '\OC\Files\Storage\SMB',
+			'options' => $legacyBackendOptions,
+			'mountOptions' => ['preview' => true, 'string' => 'abc'],
+		];
+
+		$json = [
+			'user' => [
+				self::TEST_USER1 => [
+					'/$user/files/somemount' => $legacyConfig,
+					'/$user/files/anothermount' => $legacyConfig2,
+				],
+			],
+		];
+
+		$this->writeGlobalConfig($json);
+
+		// re-read config, password was read correctly
+		$config = OC_Mount_Config::getAbsoluteMountPoints(self::TEST_USER1);
+
+		$config1 = $config['/' . self::TEST_USER1 . '/files/somemount'];
+		$config2 = $config['/' . self::TEST_USER1 . '/files/anothermount'];
+
+		$this->assertSame(self::TEST_USER1, $config1['options']['replacethis']);
+		$this->assertSame(self::TEST_USER1, $config1['options']['replacethis']);
+		$this->assertSame(1, $config1['mountOptions']['int']);
+		$this->assertSame(true, $config2['mountOptions']['preview']);
+		$this->assertSame('abc', $config2['mountOptions']['string']);
+	}
+
+
 	public function mountDataProvider() {
 		return array(
 			// Tests for visible mount points

lib/private/files/storage/common.php

@@ -333,7 +333,7 @@ abstract class Common implements \OC\Files\Storage\Storage {
 		if (!isset($this->watcher)) {
 			$this->watcher = new Watcher($storage);
 			$globalPolicy = \OC::$server->getConfig()->getSystemValue('filesystem_check_changes', Watcher::CHECK_ONCE);
-			$this->watcher->setPolicy($this->getMountOption('filesystem_check_changes', $globalPolicy));
+			$this->watcher->setPolicy((int)$this->getMountOption('filesystem_check_changes', $globalPolicy));
 		}
 		return $this->watcher;
 	}