fix(files): strict check of default values

Not ok: in_array("foo", [true, false]); // returns true
ok: in_array("foo", [true, false], true); // returns false

Signed-off-by: Misha M.-Kupriyanov <kupriyanov@strato.de>

apps/files/lib/Service/UserConfig.php

@@ -115,7 +115,12 @@ public function setConfig(string $key, $value): void {
 			throw new \InvalidArgumentException('Unknown config key');
 		}
 
-		if (!in_array($value, $this->getAllowedConfigValues($key))) {
+		$isBoolValue = filter_var($value, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE);
+		if ($isBoolValue !== null) {
+			$value = $isBoolValue;
+		}
+
+		if (!in_array($value, $this->getAllowedConfigValues($key), true)) {
 			throw new \InvalidArgumentException('Invalid config value');
 		}
 

apps/files/tests/Service/UserConfigTest.php

@@ -112,12 +112,37 @@ public function testThrowsInvalidArgumentExceptionForUnknownConfigKey(): void {
 		$userConfig->setConfig('unknown_key', true);
 	}
 
-	public function testSetsConfigSuccessfully(): void {
+	public function testThrowsInvalidArgumentExceptionForInvalidConfigValue(): void {
+		$this->expectException(\InvalidArgumentException::class);
+		$this->expectExceptionMessage('Invalid config value');
+
+		$userConfig = new UserConfig($this->configMock, $this->userSessionMock);
+		$userConfig->setConfig('crop_image_previews', 'foo');
+	}
+
+	public static function validBoolConfigValues(): array {
+		return [
+			['true', '1'],
+			['false', '0'],
+			['1', '1'],
+			['0', '0'],
+			['yes', '1'],
+			['no', '0'],
+			[true, '1'],
+			[false, '0'],
+		];
+	}
+
+	/**
+	 * @dataProvider validBoolConfigValues
+	 */
+	public function testSetsConfigWithBooleanValuesSuccessfully($boolValue, $expectedValue): void {
 		$this->configMock->expects($this->once())
 			->method('setUserValue')
-			->with($this->userUID, Application::APP_ID, 'crop_image_previews', '1');
+			->with($this->userUID, Application::APP_ID, 'crop_image_previews', $expectedValue);
+
 		$userConfig = new UserConfig($this->configMock, $this->userSessionMock);
-		$userConfig->setConfig('crop_image_previews', true);
+		$userConfig->setConfig('crop_image_previews', $boolValue);
 	}
 
 	public function testGetsConfigsWithDefaultValuesSuccessfully(): void {