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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; under version 2 |
| 7 | * of the License (non-upgradable). |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 17 | * |
| 18 | * Copyright (c) 2020 (original work) Open Assessment Technologies SA |
| 19 | */ |
| 20 | |
| 21 | declare(strict_types=1); |
| 22 | |
| 23 | namespace oat\tao\model\http; |
| 24 | |
| 25 | use Psr\Http\Message\RequestInterface; |
| 26 | |
| 27 | class RequestRebuilder |
| 28 | { |
| 29 | /** |
| 30 | * Takes care about schema rebuilding for the offloaded request |
| 31 | * Port rebuilding may be added later ( HTTP_X_FORWARDED_PORT ) |
| 32 | */ |
| 33 | public function rebuild(RequestInterface $request): RequestInterface |
| 34 | { |
| 35 | $url = $request->getUri(); |
| 36 | |
| 37 | if ('http' === $url->getScheme() && $this->wasRequestForwardedByHttps($request)) { |
| 38 | $url = $url->withScheme('https'); |
| 39 | } |
| 40 | |
| 41 | return $request->withUri($url); |
| 42 | } |
| 43 | |
| 44 | private function wasRequestForwardedByHttps(RequestInterface $request): bool |
| 45 | { |
| 46 | $https = $request->hasHeader('x-forwarded-proto') |
| 47 | && $request->getHeader('x-forwarded-proto')[0] === 'https'; |
| 48 | $https = $https || ($request->hasHeader('x-forwarded-ssl') |
| 49 | && $request->getHeader('x-forwarded-ssl')[0] === 'on'); |
| 50 | |
| 51 | return $https; |
| 52 | } |
| 53 | } |