/** * Default exception handler, uncaught exceptions are equivalent to error() in 1.9 and earlier * * @param Exception $ex * @return void -does not return. Terminates execution! */ function default_exception_handler($ex) { global $CFG, $DB, $OUTPUT, $USER, $FULLME, $SESSION, $PAGE; // detect active db transactions, rollback and log as error abort_all_db_transactions(); if ($ex instanceof required_capability_exception && !CLI_SCRIPT && !AJAX_SCRIPT && !empty($CFG->autologinguests) && !empty($USER->autologinguest)) { $SESSION->wantsurl = qualified_me(); redirect(get_login_url()); } $info = get_exception_info($ex); if (debugging('', DEBUG_MINIMAL)) { $logerrmsg = "Default exception handler: " . $info->message . ' Debug: ' . $info->debuginfo . "\n" . format_backtrace($info->backtrace, true); error_log($logerrmsg); } if (is_early_init($info->backtrace)) { echo bootstrap_renderer::early_error($info->message, $info->moreinfourl, $info->link, $info->backtrace, $info->debuginfo, $info->errorcode); } else { try { if ($DB) { // If you enable db debugging and exception is thrown, the print footer prints a lot of rubbish $DB->set_debug(0); } echo $OUTPUT->fatal_error($info->message, $info->moreinfourl, $info->link, $info->backtrace, $info->debuginfo); } catch (Exception $out_ex) { // default exception handler MUST not throw any exceptions!! // the problem here is we do not know if page already started or not, we only know that somebody messed up in outputlib or theme // so we just print at least something instead of "Exception thrown without a stack frame in Unknown on line 0":-( if (CLI_SCRIPT or AJAX_SCRIPT) { // just ignore the error and send something back using the safest method echo bootstrap_renderer::early_error($info->message, $info->moreinfourl, $info->link, $info->backtrace, $info->debuginfo, $info->errorcode); } else { echo bootstrap_renderer::early_error_content($info->message, $info->moreinfourl, $info->link, $info->backtrace, $info->debuginfo); $outinfo = get_exception_info($out_ex); echo bootstrap_renderer::early_error_content($outinfo->message, $outinfo->moreinfourl, $outinfo->link, $outinfo->backtrace, $outinfo->debuginfo); } } } exit(1); // General error code }
/** * Abort execution, displaying an error message. * * @param string $errorcode The name of the language string containing the error message. * Normally this should be in the error.php lang file. * @param string $module The language file to get the error message from. * @param string $link The url where the user will be prompted to continue. * If no url is provided the user will be directed to the site index page. * @param object $a Extra words and phrases that might be required in the error string * @return void terminates script, does not return! */ function print_error($errorcode, $module = 'error', $link = '', $a = null) { global $OUTPUT, $UNITTEST; // Errors in unit test become exceptions, so you can unit test code that might call print_error(). if (!empty($UNITTEST->running)) { throw new moodle_exception($errorcode, $module, $link, $a); } else { // It is really bad if library code calls print_error when output buffering // is on. while (ob_get_level() > 0) { ob_end_clean(); } } list($message, $moreinfourl, $link) = prepare_error_message($errorcode, $module, $link, $a); if (is_stacktrace_during_output_init(debug_backtrace())) { echo bootstrap_renderer::early_error($message, $moreinfourl, $link, debug_backtrace()); } else { echo $OUTPUT->fatal_error($message, $moreinfourl, $link, debug_backtrace()); } exit(1); // General error code }