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<?php
/*
* This file is part of the TYPO3 CMS project.
*
* It is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, either version 2
* of the License, or any later version.
*
* For the full copyright and license information, please read the
* LICENSE.txt file that was distributed with this source code.
*
* The TYPO3 project - inspiring people to share!
*/
namespace TYPO3\CMS\Core\Package;
use TYPO3\CMS\Core\Core\Environment;
use TYPO3\CMS\Core\Package\Exception\PackageStatesUnavailableException;
/**
* This is an intermediate package manager that loads just
* the required extensions for the install in case the package
* states are unavailable.
*/
class FailsafePackageManager extends PackageManager
{
/**
* @var bool TRUE if package manager is in failsafe mode
*/
protected $inFailsafeMode = false;
/**
* Loads the states of available packages from the PackageStates.php file.
* The result is stored in $this->packageStatesConfiguration.
*/
protected function loadPackageStates()
{
try {
parent::loadPackageStates();
} catch (PackageStatesUnavailableException $exception) {
$this->inFailsafeMode = true;
$this->scanAvailablePackages();
}
}
/**
* Never try to access the cache in failsafe mode
*/
protected function saveToPackageCache(): void
{
// Do not save cache if in rescue mode
if (!$this->inFailsafeMode) {
parent::saveToPackageCache();
}
}
/**
* Save states
*/
protected function savePackageStates()
{
// Do not save if in rescue mode
if (!$this->inFailsafeMode) {
parent::savePackageStates();
}
}
/**
* To enable writing of the package states file the package states
* migration needs to override eventual failsafe blocks.
*/
public function forceSortAndSavePackageStates()
{
$this->sortActivePackagesByDependencies();
parent::savePackageStates();
}
/**
* Create PackageStates.php if missing and LocalConfiguration exists, used to have an Install Tool session running
*
* It is fired if PackageStates.php is deleted on a running instance,
* all packages marked as "part of minimal system" are activated in this case.
* @param bool $useFactoryDefault if true, use the "isPartOfFactoryDefault" otherwise use "isPartOfMinimalUsableSystem"
* @internal
*/
public function recreatePackageStatesFileIfMissing(bool $useFactoryDefault = false): void
{
if (!Environment::isComposerMode() && !file_exists($this->packageStatesPathAndFilename)) {
$packages = $this->getAvailablePackages();
foreach ($packages as $package) {
if ($package instanceof PackageInterface && ($useFactoryDefault ? $package->isPartOfFactoryDefault() : $package->isPartOfMinimalUsableSystem())) {
$this->activatePackage($package->getPackageKey());
}
}
$this->forceSortAndSavePackageStates();
}
}
}