InstallToolFormProtection.php

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<?php
namespace TYPO3\CMS\Core\FormProtection;

class InstallToolFormProtection extends AbstractFormProtection {

    protected $installTool = NULL;

    public function __destruct() {
        $this->installTool = NULL;
        parent::__destruct();
    }

    public function injectInstallTool($installTool) {
        \TYPO3\CMS\Core\Utility\GeneralUtility::logDeprecatedFunction();
        $this->installTool = $installTool;
    }

    protected function createValidationErrorMessage() {
        // @deprecated since 6.2, neither the install tool class nor the addErrorMessage() exist anymore
        if (is_object($this->installTool)) {
            $this->installTool->addErrorMessage(
                'Validating the security token of this form has failed. '
                . 'Please reload the form and submit it again.'
            );
        }
    }

    protected function retrieveSessionToken() {
        if (isset($_SESSION['installToolFormToken']) && !empty($_SESSION['installToolFormToken'])) {
            $this->sessionToken = $_SESSION['installToolFormToken'];
        } else {
            $this->sessionToken = $this->generateSessionToken();
            $this->persistSessionToken();
        }
    }

    public function persistSessionToken() {
        $_SESSION['installToolFormToken'] = $this->sessionToken;
    }

}