diff options
Diffstat (limited to 'lib/private/legacy/OC_Response.php')
| -rw-r--r-- | lib/private/legacy/OC_Response.php | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/lib/private/legacy/OC_Response.php b/lib/private/legacy/OC_Response.php new file mode 100644 index 00000000000..4eb454d3181 --- /dev/null +++ b/lib/private/legacy/OC_Response.php @@ -0,0 +1,108 @@ +<?php +/** + * @copyright Copyright (c) 2016, ownCloud, Inc. + * + * @author Andreas Fischer <bantu@owncloud.com> + * @author Bart Visscher <bartv@thisnet.nl> + * @author J0WI <J0WI@users.noreply.github.com> + * @author Lukas Reschke <lukas@statuscode.ch> + * @author Morris Jobke <hey@morrisjobke.de> + * @author Roeland Jago Douma <roeland@famdouma.nl> + * @author Thomas Müller <thomas.mueller@tmit.eu> + * @author Vincent Petry <pvince81@owncloud.com> + * + * @license AGPL-3.0 + * + * This code is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License, version 3, + * as published by the Free Software Foundation. + * + * 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, version 3, + * along with this program. If not, see <http://www.gnu.org/licenses/> + * + */ + +class OC_Response { + /** + * Sets the content disposition header (with possible workarounds) + * @param string $filename file name + * @param string $type disposition type, either 'attachment' or 'inline' + */ + static public function setContentDispositionHeader( $filename, $type = 'attachment' ) { + if (\OC::$server->getRequest()->isUserAgent( + [ + \OC\AppFramework\Http\Request::USER_AGENT_IE, + \OC\AppFramework\Http\Request::USER_AGENT_ANDROID_MOBILE_CHROME, + \OC\AppFramework\Http\Request::USER_AGENT_FREEBOX, + ])) { + header( 'Content-Disposition: ' . rawurlencode($type) . '; filename="' . rawurlencode( $filename ) . '"' ); + } else { + header( 'Content-Disposition: ' . rawurlencode($type) . '; filename*=UTF-8\'\'' . rawurlencode( $filename ) + . '; filename="' . rawurlencode( $filename ) . '"' ); + } + } + + /** + * Sets the content length header (with possible workarounds) + * @param string|int|float $length Length to be sent + */ + static public function setContentLengthHeader($length) { + if (PHP_INT_SIZE === 4) { + if ($length > PHP_INT_MAX && stripos(PHP_SAPI, 'apache') === 0) { + // Apache PHP SAPI casts Content-Length headers to PHP integers. + // This enforces a limit of PHP_INT_MAX (2147483647 on 32-bit + // platforms). So, if the length is greater than PHP_INT_MAX, + // we just do not send a Content-Length header to prevent + // bodies from being received incompletely. + return; + } + // Convert signed integer or float to unsigned base-10 string. + $lfh = new \OC\LargeFileHelper; + $length = $lfh->formatUnsignedInteger($length); + } + header('Content-Length: '.$length); + } + + /** + * This function adds some security related headers to all requests served via base.php + * The implementation of this function has to happen here to ensure that all third-party + * components (e.g. SabreDAV) also benefit from this headers. + */ + public static function addSecurityHeaders() { + /** + * FIXME: Content Security Policy for legacy ownCloud components. This + * can be removed once \OCP\AppFramework\Http\Response from the AppFramework + * is used everywhere. + * @see \OCP\AppFramework\Http\Response::getHeaders + */ + $policy = 'default-src \'self\'; ' + . 'script-src \'self\' \'nonce-'.\OC::$server->getContentSecurityPolicyNonceManager()->getNonce().'\'; ' + . 'style-src \'self\' \'unsafe-inline\'; ' + . 'frame-src *; ' + . 'img-src * data: blob:; ' + . 'font-src \'self\' data:; ' + . 'media-src *; ' + . 'connect-src *; ' + . 'object-src \'none\'; ' + . 'base-uri \'self\'; '; + header('Content-Security-Policy:' . $policy); + + // Send fallback headers for installations that don't have the possibility to send + // custom headers on the webserver side + if(getenv('modHeadersAvailable') !== 'true') { + header('Referrer-Policy: no-referrer'); // https://www.w3.org/TR/referrer-policy/ + header('X-Content-Type-Options: nosniff'); // Disable sniffing the content type for IE + header('X-Download-Options: noopen'); // https://msdn.microsoft.com/en-us/library/jj542450(v=vs.85).aspx + header('X-Frame-Options: SAMEORIGIN'); // Disallow iFraming from other domains + header('X-Permitted-Cross-Domain-Policies: none'); // https://www.adobe.com/devnet/adobe-media-server/articles/cross-domain-xml-for-streaming.html + header('X-Robots-Tag: none'); // https://developers.google.com/webmasters/control-crawl-index/docs/robots_meta_tag + header('X-XSS-Protection: 1; mode=block'); // Enforce browser based XSS filters + } + } + +} |