Request.php

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<?php
namespace TYPO3\CMS\Form;

class Request implements \TYPO3\CMS\Core\SingletonInterface {

    protected $prefix = 'tx_form';

    protected $method = 'post';

    protected $sessionData = array();

    public function setPrefix($prefix = 'tx_form') {
        if (empty($prefix)) {
            $prefix = 'tx_form';
        }
        $prefix = preg_replace('/\\s/', '_', (string) $prefix);
        $this->prefix = preg_replace('/[^a-zA-Z0-9_\\-]/', '', $prefix);
    }

    public function getPrefix() {
        return $this->prefix;
    }

    public function setMethod($method = 'get') {
        $allowedMethods = array(
            'post',
            'get',
            'session'
        );
        $method = strtolower((string) $method);
        if ($GLOBALS['TSFE']->loginUser) {
            $this->sessionData = $GLOBALS['TSFE']->fe_user->getKey('user', $this->prefix);
        } else {
            $this->sessionData = $GLOBALS['TSFE']->fe_user->getKey('ses', $this->prefix);
        }
        if (!empty($this->sessionData)) {
            $method = 'session';
        }
        if (!in_array($method, $allowedMethods)) {
            $method = 'post';
        }
        $this->method = $method;
    }

    public function getMethod() {
        return $this->method;
    }

    public function get($key) {
        switch (TRUE) {
            case $this->method === 'get' && isset($_GET[$this->prefix][$key]):
                return $_GET[$this->prefix][$key];
            case $this->method === 'post' && isset($_POST[$this->prefix][$key]):
                return $_POST[$this->prefix][$key];
            case $this->method === 'session' && isset($this->sessionData[$key]):
                return $this->sessionData[$key];
            default:
                return NULL;
        }
    }

    public function has($key) {
        switch (TRUE) {
            case $this->method === 'get' && isset($_GET[$this->prefix][$key]):
                return TRUE;
            case $this->method === 'post' && isset($_POST[$this->prefix][$key]):
                return TRUE;
            case $this->method === 'session' && isset($this->sessionData[$key]):
                return TRUE;
            default:
                return FALSE;
        }
    }

    public function hasRequest() {
        switch (TRUE) {
            case $this->method === 'get' && isset($_GET[$this->prefix]):
                return TRUE;
            case $this->method === 'post' && isset($_POST[$this->prefix]):
                return TRUE;
            case $this->method === 'session' && !empty($this->sessionData):
                return TRUE;
            default:
                return FALSE;
        }
    }

    public function getQuery($key = NULL, $default = NULL) {
        if ($key === NULL) {
            return $_GET[$this->prefix];
        }
        return isset($_GET[$this->prefix][$key]) ? $_GET[$this->prefix][$key] : $default;
    }

    public function getPost($key = NULL, $default = NULL) {
        if ($key === NULL) {
            return $_POST[$this->prefix];
        }
        return isset($_POST[$this->prefix][$key]) ? $_POST[$this->prefix][$key] : $default;
    }

    public function getSession($key = NULL, $default = NULL) {
        if ($key === NULL) {
            return $this->sessionData;
        }
        return isset($this->sessionData[$key]) ? $this->sessionData[$key] : $default;
    }

    public function getByMethod($key = NULL, $default = NULL) {
        if ($this->method === 'get') {
            return $this->getQuery($key, $default);
        } elseif ($this->method === 'post') {
            return $this->getPost($key, $default);
        } elseif ($this->method === 'session') {
            return $this->getSession($key, $default);
        } else {
            return FALSE;
        }
    }

    public function storeSession() {
        if ($GLOBALS['TSFE']->loginUser) {
            $GLOBALS['TSFE']->fe_user->setKey('user', $this->prefix, $this->getByMethod());
        } else {
            $GLOBALS['TSFE']->fe_user->setKey('ses', $this->prefix, $this->getByMethod());
        }
        $GLOBALS['TSFE']->storeSessionData();
    }

    public function destroySession() {
        $this->removeFiles();
        if ($GLOBALS['TSFE']->loginUser) {
            $GLOBALS['TSFE']->fe_user->setKey('user', $this->prefix, NULL);
        } else {
            $GLOBALS['TSFE']->fe_user->setKey('ses', $this->prefix, NULL);
        }
        $GLOBALS['TSFE']->storeSessionData();
    }

    public function storeFiles() {
        $formData = $this->getByMethod();
        if (isset($_FILES[$this->prefix]) && is_array($_FILES[$this->prefix])) {
            foreach ($_FILES[$this->prefix]['tmp_name'] as $fieldName => $uploadedFile) {
                if (
                    $_FILES[$this->prefix]['error'][$fieldName] !== UPLOAD_ERR_OK
                    || !is_uploaded_file($_FILES[$this->prefix]['tmp_name'][$fieldName])
                ) {
                    unset($formData[$fieldName]);
                    continue;
                }
                # Remove items with blacklisted keys
                $formData[$fieldName] = array_diff_key(
                    $formData[$fieldName],
                    array('tempFilename' => 1, 'originalFilename' => 1, 'type' => 1, 'size' => 1)
                );

                if (is_uploaded_file($uploadedFile)) {
                    $tempFilename = \TYPO3\CMS\Core\Utility\GeneralUtility::upload_to_tempfile($uploadedFile);
                    if (TYPO3_OS === 'WIN') {
                        $tempFilename = \TYPO3\CMS\Core\Utility\GeneralUtility::fixWindowsFilePath($tempFilename);
                    }
                    if ($tempFilename !== '') {
                        // Use finfo to get the mime type
                        $finfo = finfo_open(FILEINFO_MIME_TYPE);
                        $mimeType = finfo_file($finfo, $tempFilename);
                        finfo_close($finfo);
                        $formData[$fieldName] = array(
                            'tempFilename' => $tempFilename,
                            'originalFilename' => $_FILES[$this->prefix]['name'][$fieldName],
                            'type' => $mimeType,
                            'size' => (int)$_FILES[$this->prefix]['size'][$fieldName]
                        );
                    }
                }
            }
        }
        switch ($this->getMethod()) {
            case 'post':
                $_POST[$this->prefix] = $formData;
                break;
            case 'get':
                $_GET[$this->prefix] = $formData;
                break;
            case 'session':
                $this->sessionData = $formData;
                break;
        }
    }

    protected function removeFiles() {
        $values = $this->getByMethod();
        if (is_array($values)) {
            foreach ($values as $value) {
                if (is_array($value) && isset($value['tempFilename'])) {
                    \TYPO3\CMS\Core\Utility\GeneralUtility::unlink_tempfile($value['tempFilename']);
                }
            }
        }
    }

}