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<?php declare(strict_types=1); |
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/** |
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* ownCloud - Music app |
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* |
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* This file is licensed under the Affero General Public License version 3 or |
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* later. See the COPYING file. |
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* |
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* @author Pauli Järvinen <[email protected]> |
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* @copyright Pauli Järvinen 2022 |
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*/ |
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namespace OCA\Music\Utility; |
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/** |
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* Static utility functions to work with HTTP requests |
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*/ |
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class HttpUtil { |
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/** |
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* Use HTTP GET to load the requested URL |
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* @return array with three keys: ['content' => string|false, 'status_code' => int, 'message' => string] |
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*/ |
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public static function loadFromUrl(string $url) : array { |
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if (!Util::startsWith($url, 'http://', /*ignoreCase=*/true) |
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&& !Util::startsWith($url, 'https://', /*ignoreCase=*/true)) { |
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$content = false; |
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$status_code = 0; |
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$message = 'URL scheme must be HTTP or HTTPS'; |
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} else { |
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$opts = [ |
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'http' => [ |
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'header' => self::userAgentHeader(), // some servers don't allow requests without a user agent header |
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'ignore_errors' => true // don't emit warnings for bad/unavailable URL, we handle errors manually |
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] |
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]; |
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$context = \stream_context_create($opts); |
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$content = \file_get_contents($url, false, $context); |
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// It's some PHP magic that calling file_get_contents creates and populates also a local |
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// variable array $http_response_header, provided that the server could be reached. |
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// PhpStan thinks that this varialbe would always exist, and doesn't like the isset. |
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// @phpstan-ignore-next-line |
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if (isset($http_response_header)) { |
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list($version, $status_code, $message) = \explode(' ', $http_response_header[0], 3); |
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$status_code = (int)$status_code; |
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} else { |
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$status_code = 0; |
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$message = 'The requested URL did not respond'; |
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} |
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} |
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return \compact('content', 'status_code', 'message'); |
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} |
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public static function userAgentHeader() : string { |
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// Note: the following is deprecated since NC14 but the replacement |
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// \OCP\App\IAppManager::getAppVersion is not available before NC14. |
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$appVersion = \OCP\App::getAppVersion('music'); |
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return 'User-Agent: OCMusic/' . $appVersion; |
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} |
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} |
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owncloud /
music
