From d216b3147bc3f37cf2337acab5767c6a4f74aa2e Mon Sep 17 00:00:00 2001 From: emkael Date: Mon, 31 Oct 2016 21:58:33 +0100 Subject: * PHPTAL library --- lib/phptal/PHPTAL/ExceptionHandler.php | 81 ++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 lib/phptal/PHPTAL/ExceptionHandler.php (limited to 'lib/phptal/PHPTAL/ExceptionHandler.php') diff --git a/lib/phptal/PHPTAL/ExceptionHandler.php b/lib/phptal/PHPTAL/ExceptionHandler.php new file mode 100644 index 0000000..dca7bb7 --- /dev/null +++ b/lib/phptal/PHPTAL/ExceptionHandler.php @@ -0,0 +1,81 @@ + + * @license http://www.gnu.org/licenses/lgpl.html GNU Lesser General Public License + * @version SVN: $Id: $ + * @link http://phptal.org/ + */ + +class PHPTAL_ExceptionHandler +{ + private $encoding; + function __construct($encoding) + { + $this->encoding = $encoding; + } + + /** + * PHP's default exception handler allows error pages to be indexed and can reveal too much information, + * so if possible PHPTAL sets up its own handler to fix this. + * + * Doesn't change exception handler if non-default one is set. + * + * @param Exception e exception to re-throw and display + * + * @return void + * @throws Exception + */ + public static function handleException(Exception $e, $encoding) + { + // PHPTAL's handler is only useful on fresh HTTP response + if (PHP_SAPI !== 'cli' && !headers_sent()) { + $old_exception_handler = set_exception_handler(array(new PHPTAL_ExceptionHandler($encoding), '_defaultExceptionHandler')); + + if ($old_exception_handler !== NULL) { + restore_exception_handler(); // if there's user's exception handler, let it work + } + } + throw $e; // throws instead of outputting immediately to support user's try/catch + } + + + /** + * Generates simple error page. Sets appropriate HTTP status to prevent page being indexed. + * + * @param Exception e exception to display + */ + public function _defaultExceptionHandler($e) + { + if (!headers_sent()) { + header('HTTP/1.1 500 PHPTAL Exception'); + header('Content-Type:text/html;charset='.$this->encoding); + } + + $line = $e->getFile(); + if ($e->getLine()) { + $line .= ' line '.$e->getLine(); + } + + if (ini_get('display_errors')) { + $title = get_class($e).': '.htmlspecialchars($e->getMessage()); + $body = "

\n".htmlspecialchars($e->getMessage()).'

' . + '

In '.htmlspecialchars($line)."

\n".htmlspecialchars($e->getTraceAsString()).'

'; + } else { + $title = "PHPTAL Exception"; + $body = "

This page cannot be displayed.

" . + "

Enable display_errors to see detailed message.

"; + } + + echo "\n"; + echo $title.'

PHPTAL Exception

'.$body; + error_log($e->getMessage().' in '.$line); + echo ''.str_repeat(' ', 100)."\n"; // IE won't display error pages < 512b + exit(1); + } +} -- cgit v1.2.3