function upgrade()
{
global $thisstaff, $ost;
if (!$thisstaff or !$thisstaff->isAdmin() or !$ost) {
Http::response(403, 'Access Denied');
}
$upgrader = new Upgrader(TABLE_PREFIX, UPGRADE_DIR . 'streams/');
if ($upgrader->isAborted()) {
Http::response(416, __("We have a problem ... wait a sec."));
exit;
}
if ($upgrader->getTask() && $upgrader->doTask()) {
//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, sprintf(__("Upgraded to %s ... post-upgrade checks!"), $version));
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, $upgrader->getNextAction());
}
case 'prereq':
if (!$ost->isUpgradePending()) {
$errors['err'] = __('Nothing to do! System already upgraded to the current version');
} elseif (!$upgrader->isUpgradable()) {
$errors['err'] = __('The upgrader does NOT support upgrading from the current vesion!');
} elseif (!$upgrader->check_prereq()) {
$errors['prereq'] = __('Minimum requirements not met! Refer to Release Notes for more information');
} elseif (!strcasecmp(basename(CONFIG_FILE), 'settings.php')) {
$errors['err'] = __('Config file rename required to continue!');
} else {
$upgrader->setState('upgrade');
}
break;
case 'upgrade':
//Manual upgrade.... when JS (ajax) is not supported.
if ($upgrader->getTask()) {
$upgrader->doTask();
} elseif ($ost->isUpgradePending() && $upgrader->isUpgradable()) {
$upgrader->upgrade();
} elseif (!$ost->isUpgradePending()) {
$upgrader->setState('done');
}
if ($errors = $upgrader->getErrors()) {
$upgrader->setState('aborted');
}
break;
default:
$errors['err'] = __('Unknown action');
}
}
switch (strtolower($upgrader->getState())) {