diff options
Diffstat (limited to 'application/libraries/ExceptionHandler.php')
| -rw-r--r-- | application/libraries/ExceptionHandler.php | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/application/libraries/ExceptionHandler.php b/application/libraries/ExceptionHandler.php new file mode 100644 index 000000000..94a1d35c0 --- /dev/null +++ b/application/libraries/ExceptionHandler.php @@ -0,0 +1,154 @@ +<?php +/* + * Copyright 2015 Florian "Bluewind" Pritz <bluewind@server-speed.net> + * + * Licensed under AGPLv3 + * (see COPYING for full license text) + * + */ + +namespace libraries; + +class ExceptionHandler { + static function setup() + { + set_error_handler(array("\libraries\ExceptionHandler", "error_handler")); + set_exception_handler(array("\libraries\ExceptionHandler", 'exception_handler')); + register_shutdown_function(array("\libraries\ExceptionHandler", "check_for_fatal")); + assert_options(ASSERT_ACTIVE, true); + assert_options(ASSERT_CALLBACK, array("\libraries\ExceptionHandler", '_assert_failure')); + } + + static function error_handler($errno, $errstr, $errfile, $errline) + { + if (!(error_reporting() & $errno)) { + // This error code is not included in error_reporting + return; + } + throw new \ErrorException($errstr, 0, $errno, $errfile, $errline); + } + + // Source: https://gist.github.com/abtris/1437966 + static private function getExceptionTraceAsString($exception) { + $rtn = ""; + $count = 0; + foreach ($exception->getTrace() as $frame) { + $args = ""; + if (isset($frame['args'])) { + $args = array(); + foreach ($frame['args'] as $arg) { + if (is_string($arg)) { + $args[] = "'" . $arg . "'"; + } elseif (is_array($arg)) { + $args[] = "Array"; + } elseif (is_null($arg)) { + $args[] = 'NULL'; + } elseif (is_bool($arg)) { + $args[] = ($arg) ? "true" : "false"; + } elseif (is_object($arg)) { + $args[] = get_class($arg); + } elseif (is_resource($arg)) { + $args[] = get_resource_type($arg); + } else { + $args[] = $arg; + } + } + $args = join(", ", $args); + } + $rtn .= sprintf( "#%s %s(%s): %s(%s)\n", + $count, + isset($frame['file']) ? $frame['file'] : 'unknown file', + isset($frame['line']) ? $frame['line'] : 'unknown line', + (isset($frame['class'])) ? $frame['class'].$frame['type'].$frame['function'] : $frame['function'], + $args ); + $count++; + } + return $rtn; + } + + static public function log_exception($ex) + { + $exceptions = array($ex); + while ($ex->getPrevious() !== null) { + $ex = $ex->getPrevious(); + $exceptions[] = $ex; + } + + foreach ($exceptions as $key => $e) { + $message = sprintf("Exception %d/%d '%s' with message '%s' in %s:%d\n", $key+1, count($exceptions), get_class($e), $e->getMessage(), $e->getFile(), $e->getLine()); + if (method_exists($e, "get_error_id")) { + $message .= 'Error ID: '.$e->get_error_id()."\n"; + } + if (method_exists($e, "get_data") && $e->get_data() !== NULL) { + $message .= 'Data: '.var_export($e->get_data(), true)."\n"; + } + $message .= "Backtrace:\n".self::getExceptionTraceAsString($e)."\n"; + error_log($message); + } + } + + // The actual exception handler + static public function exception_handler($ex) + { + self::log_exception($ex); + + $display_errors = in_array(strtolower(ini_get('display_errors')), array('1', 'on', 'true', 'stdout')); + if (php_sapi_name() === 'cli' OR defined('STDIN')) { + $display_errors = true; + } + + $GLOBALS["is_error_page"] = true; + $heading = "Internal Server Error"; + $message = "<p>An unhandled error occured.</p>\n"; + + if ($display_errors) { + $exceptions = array($ex); + while ($ex->getPrevious() !== null) { + $ex = $ex->getPrevious(); + $exceptions[] = $ex; + } + + foreach ($exceptions as $key => $e) { + $backtrace = self::getExceptionTraceAsString($e); + $message .= '<div>'; + $message .= '<b>Exception '.($key+1).' of '.count($exceptions).'</b><br>'; + $message .= '<b>Fatal error</b>: Uncaught exception '.htmlspecialchars(get_class($e)).'<br>'; + $message .= '<b>Message</b>: '.htmlspecialchars($e->getMessage()).'<br>'; + if (method_exists($e, "get_error_id")) { + $message .= '<b>Error ID</b>: '.htmlspecialchars($e->get_error_id()).'<br>'; + } + if (method_exists($e, "get_data") && $e->get_data() !== NULL) { + $message .= '<b>Data</b>: <pre>'.htmlspecialchars(var_export($e->get_data(), true)).'</pre><br>'; + } + $message .= '<b>Backtrace:</b><br>'; + $message .= '<pre>'.htmlspecialchars(str_replace(FCPATH, "./", $backtrace)).'</pre>'; + $message .= 'thrown in <b>'.htmlspecialchars($e->getFile()).'</b> on line <b>'.htmlspecialchars($e->getLine()).'</b><br>'; + $message .= '</div>'; + } + } else { + $message .="<p>More information can be found in the php error log or by enabling display_errors.</p>"; + } + + $message = "$message"; + include VIEWPATH."/errors/html/error_general.php"; + } + + /** + * Checks for a fatal error, work around for set_error_handler not working on fatal errors. + */ + static public function check_for_fatal() + { + $error = error_get_last(); + if ($error["type"] == E_ERROR) { + self::exception_handler(new \ErrorException( + $error["message"], 0, $error["type"], $error["file"], $error["line"])); + } + } + + static public function assert_failure($file, $line, $expr, $message = "") + { + self::exception_handler(new Exception("assert($expr): Assertion failed in $file at line $line".($message != "" ? " with message: '$message'" : ""))); + exit(1); + } + +} |