nextcloud/lib/private/Security/CSP/ContentSecurityPolicyNonceManager.php
Christoph Wurst caff1023ea
Format control structures, classes, methods and function
To continue this formatting madness, here's a tiny patch that adds
unified formatting for control structures like if and loops as well as
classes, their methods and anonymous functions. This basically forces
the constructs to start on the same line. This is not exactly what PSR2
wants, but I think we can have a few exceptions with "our" style. The
starting of braces on the same line is pracrically standard for our
code.

This also removes and empty lines from method/function bodies at the
beginning and end.

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>
2020-04-10 14:19:56 +02:00

95 lines
2.5 KiB
PHP

<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2016 Lukas Reschke <lukas@statuscode.ch>
*
* @author Joas Schilling <coding@schilljs.com>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Pavel Krasikov <klonishe@gmail.com>
* @author Roeland Jago Douma <roeland@famdouma.nl>
* @author Sam Bull <aa6bs0@sambull.org>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OC\Security\CSP;
use OC\AppFramework\Http\Request;
use OC\Security\CSRF\CsrfTokenManager;
use OCP\IRequest;
/**
* @package OC\Security\CSP
*/
class ContentSecurityPolicyNonceManager {
/** @var CsrfTokenManager */
private $csrfTokenManager;
/** @var IRequest */
private $request;
/** @var string */
private $nonce = '';
/**
* @param CsrfTokenManager $csrfTokenManager
* @param IRequest $request
*/
public function __construct(CsrfTokenManager $csrfTokenManager,
IRequest $request) {
$this->csrfTokenManager = $csrfTokenManager;
$this->request = $request;
}
/**
* Returns the current CSP nounce
*
* @return string
*/
public function getNonce(): string {
if ($this->nonce === '') {
if (empty($this->request->server['CSP_NONCE'])) {
$this->nonce = base64_encode($this->csrfTokenManager->getToken()->getEncryptedValue());
} else {
$this->nonce = $this->request->server['CSP_NONCE'];
}
}
return $this->nonce;
}
/**
* Check if the browser supports CSP v3
*
* @return bool
*/
public function browserSupportsCspV3(): bool {
$browserWhitelist = [
Request::USER_AGENT_CHROME,
// Firefox 45+
'/^Mozilla\/5\.0 \([^)]+\) Gecko\/[0-9.]+ Firefox\/(4[5-9]|[5-9][0-9])\.[0-9.]+$/',
// Safari 12+
'/^Mozilla\/5\.0 \([^)]+\) AppleWebKit\/[0-9.]+ \(KHTML, like Gecko\) Version\/(?:1[2-9]|[2-9][0-9])\.[0-9]+(?:\.[0-9]+)? Safari\/[0-9.A-Z]+$/',
];
if ($this->request->isUserAgent($browserWhitelist)) {
return true;
}
return false;
}
}