/**
* Enables CLI maintenance mode by creating new dataroot/climaintenance.html file.
*/
function enable_cli_maintenance_mode()
{
global $CFG;
if (file_exists("{$CFG->dataroot}/climaintenance.html")) {
unlink("{$CFG->dataroot}/climaintenance.html");
}
if (isset($CFG->maintenance_message) and !html_is_blank($CFG->maintenance_message)) {
$data = $CFG->maintenance_message;
$data = bootstrap_renderer::early_error_content($data, null, null, null);
$data = bootstrap_renderer::plain_page(get_string('sitemaintenance', 'admin'), $data);
} else {
if (file_exists("{$CFG->dataroot}/climaintenance.template.html")) {
$data = file_get_contents("{$CFG->dataroot}/climaintenance.template.html");
} else {
$data = get_string('sitemaintenance', 'admin');
$data = bootstrap_renderer::early_error_content($data, null, null, null);
$data = bootstrap_renderer::plain_page(get_string('sitemaintenance', 'admin'), $data);
}
}
file_put_contents("{$CFG->dataroot}/climaintenance.html", $data);
chmod("{$CFG->dataroot}/climaintenance.html", $CFG->filepermissions);
}
/**
* 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
}
/**
* Create CLI maintenance file to prevent all access.
*/
function tool_dbtransfer_create_maintenance_file()
{
global $CFG;
register_shutdown_function('tool_dbtransfer_maintenance_callback');
$options = new stdClass();
$options->trusted = false;
$options->noclean = false;
$options->smiley = false;
$options->filter = false;
$options->para = true;
$options->newlines = false;
$message = format_text(get_string('climigrationnotice', 'tool_dbtransfer'), FORMAT_MARKDOWN, $options);
$message = bootstrap_renderer::early_error_content($message, '', '', array());
$html = <<<OET
<!DOCTYPE html>
<html>
<header><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><header/>
<body>{$message}</body>
</html>
OET;
file_put_contents("{$CFG->dataroot}/climaintenance.html", $html);
@chmod("{$CFG->dataroot}/climaintenance.html", $CFG->filepermissions);
}
