Merge pull request #7191 from nupplaphil/bug/logfile_permission

Fixing logfile permission denied exceptions

src/Factory/LoggerFactory.php

@@ -26,6 +26,7 @@ class LoggerFactory
 {
 	/**
 	 * A list of classes, which shouldn't get logged
+	 *
 	 * @var array
 	 */
 	private static $ignoreClassList = [
@@ -71,7 +72,10 @@ class LoggerFactory
 
 				$stream = $config->get('system', 'logfile');
 
+				// just add a stream in case it's either writable or not file
+				if (!is_file($stream) || is_writable($stream)) {
 					static::addStreamHandler($logger, $stream, $loglevel);
+				}
 				break;
 
 			case 'syslog':
@@ -81,7 +85,12 @@ class LoggerFactory
 			case 'stream':
 			default:
 				$stream = $config->get('system', 'logfile');
+				// just add a stream in case it's either writable or not file
+				if (!is_file($stream) || is_writable($stream)) {
 					$logger = new StreamLogger($channel, $stream, $introspection, $loglevel);
+				} else {
+					$logger = new VoidLogger();
+				}
 				break;
 		}
 
@@ -120,7 +129,8 @@ class LoggerFactory
 		$stream      = $config->get('system', 'dlogfile');
 		$developerIp = $config->get('system', 'dlogip');
 
-		if (!isset($developerIp) || !$debugging) {
+		if ((!isset($developerIp) || !$debugging) &&
+		    (!is_file($stream) || is_writable($stream))) {
 			$logger = new VoidLogger();
 			Logger::setDevLogger($logger);
 			return $logger;
@@ -172,6 +182,7 @@ class LoggerFactory
 
 	/**
 	 * Mapping a legacy level to the PSR-3 compliant levels
+	 *
 	 * @see https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-3-logger-interface.md#5-psrlogloglevel
 	 *
 	 * @param string $level the level to be mapped

src/Module/Admin/Logs/Settings.php

@@ -22,6 +22,12 @@ class Settings extends BaseAdminModule
 			$debugging = !empty($_POST['debugging']);
 			$loglevel  = defaults($_POST, 'loglevel', LogLevel::ERROR);
 
+			if (is_file($logfile) &&
+			!is_writeable($logfile)) {
+				notice(L10n::t('The logfile \'%s\' is not writable. No logging possible', $logfile));
+				return;
+			}
+
 			Config::set('system', 'logfile', $logfile);
 			Config::set('system', 'debugging', $debugging);
 			Config::set('system', 'loglevel', $loglevel);

src/Module/Admin/Summary.php

@@ -74,6 +74,23 @@ class Summary extends BaseAdminModule
 				$well_known, $well_known, $a->getBaseURL() . '/help/Install');
 		}
 
+		// Check logfile permission
+		if (Config::get('system', 'debugging')) {
+			$stream = Config::get('system', 'logfile');
+
+			if (is_file($stream) &&
+			    !is_writeable($stream)) {
+				$warningtext[] = L10n::t('The logfile \'%s\' is not writable. No logging possible', $stream);
+			}
+
+			$stream = Config::get('system', 'dlogfile');
+
+			if (is_file($stream) &&
+			    !is_writeable($stream)) {
+				$warningtext[] = L10n::t('The logfile \'%s\' is not writable. No logging possible', $stream);
+			}
+		}
+
 		// check legacy basepath settings
 		$configLoader = new ConfigFileLoader($a->getBasePath(), $a->getMode());
 		$configCache = new Config\Cache\ConfigCache();