function upgrade()
{
global $thisstaff, $ost;
if (!$thisstaff or !$thisstaff->isAdmin() or !$ost) {
Http::response(403, 'Access Denied');
}
$upgrader = new Upgrader($ost->getDBSignature(), TABLE_PREFIX, SQL_DIR);
//Just report the next action on the first call.
if (!$_SESSION['ost_upgrader'] || !$_SESSION['ost_upgrader'][$upgrader->getShash()]['progress']) {
$_SESSION['ost_upgrader'][$upgrader->getShash()]['progress'] = $upgrader->getNextAction();
Http::response(200, $upgrader->getNextAction());
exit;
}
if ($upgrader->isAborted()) {
Http::response(416, "We have a problem ... wait a sec.");
exit;
}
if ($upgrader->getNumPendingTasks() && $upgrader->doTasks()) {
//More pending tasks - doTasks returns the number of pending tasks
Http::response(200, $upgrader->getNextAction());
exit;
} elseif ($ost->isUpgradePending()) {
if ($upgrader->isUpgradable()) {
$version = $upgrader->getNextVersion();
if ($upgrader->upgrade()) {
//We're simply reporting progress here - call back will report next action'
Http::response(200, "Upgraded to {$version} ... post-upgrade checks!");
exit;
}
} else {
//Abort: Upgrade pending but NOT upgradable - invalid or wrong hash.
$upgrader->abort(sprintf('Upgrade Failed: Invalid or wrong hash [%s]', $ost->getDBSignature()));
}
} elseif (!$ost->isUpgradePending()) {
$upgrader->setState('done');
session_write_close();
Http::response(201, "We're done!");
exit;
}
if ($upgrader->isAborted() || $upgrader->getErrors()) {
Http::response(416, "We have a problem ... wait a sec.");
exit;
}
Http::response(200, $upgrader->getNextAction());
}