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| <?php | |
| /** | |
| * PrivateBin | |
| * | |
| * a zero-knowledge paste bin | |
| * | |
| * @link https://github.com/PrivateBin/PrivateBin | |
| * @copyright 2012 Sébastien SAUVAGE (sebsauvage.net) | |
| * @license https://www.opensource.org/licenses/zlib-license.php The zlib/libpng License | |
| * @version 1.5.1 | |
| */ | |
| namespace PrivateBin; | |
| use Exception; | |
| /** | |
| * YourlsProxy | |
| * | |
| * Forwards a URL for shortening to YOURLS (your own URL shortener) and stores | |
| * the result. | |
| */ | |
| class YourlsProxy | |
| { | |
| /** | |
| * error message | |
| * | |
| * @access private | |
| * @var string | |
| */ | |
| private $_error = ''; | |
| /** | |
| * shortened URL | |
| * | |
| * @access private | |
| * @var string | |
| */ | |
| private $_url = ''; | |
| /** | |
| * constructor | |
| * | |
| * initializes and runs PrivateBin | |
| * | |
| * @access public | |
| * @param string $link | |
| */ | |
| public function __construct(Configuration $conf, $link) | |
| { | |
| if (strpos($link, $conf->getKey('basepath') . '?') === false) { | |
| $this->_error = 'Trying to shorten a URL that isn\'t pointing at our instance.'; | |
| return; | |
| } | |
| $yourls_api_url = $conf->getKey('apiurl', 'yourls'); | |
| if (empty($yourls_api_url)) { | |
| $this->_error = 'Error calling YOURLS. Probably a configuration issue, like wrong or missing "apiurl" or "signature".'; | |
| return; | |
| } | |
| $data = file_get_contents( | |
| $yourls_api_url, false, stream_context_create( | |
| array( | |
| 'http' => array( | |
| 'method' => 'POST', | |
| 'header' => "Content-Type: application/x-www-form-urlencoded\r\n", | |
| 'content' => http_build_query( | |
| array( | |
| 'signature' => $conf->getKey('signature', 'yourls'), | |
| 'format' => 'json', | |
| 'action' => 'shorturl', | |
| 'url' => $link, | |
| ) | |
| ), | |
| ), | |
| ) | |
| ) | |
| ); | |
| try { | |
| $data = Json::decode($data); | |
| } catch (Exception $e) { | |
| $this->_error = 'Error calling YOURLS. Probably a configuration issue, like wrong or missing "apiurl" or "signature".'; | |
| error_log('Error calling YOURLS: ' . $e->getMessage()); | |
| return; | |
| } | |
| if ( | |
| !is_null($data) && | |
| array_key_exists('statusCode', $data) && | |
| $data['statusCode'] == 200 && | |
| array_key_exists('shorturl', $data) | |
| ) { | |
| $this->_url = $data['shorturl']; | |
| } else { | |
| $this->_error = 'Error parsing YOURLS response.'; | |
| } | |
| } | |
| /** | |
| * Returns the (untranslated) error message | |
| * | |
| * @access public | |
| * @return string | |
| */ | |
| public function getError() | |
| { | |
| return $this->_error; | |
| } | |
| /** | |
| * Returns the shortened URL | |
| * | |
| * @access public | |
| * @return string | |
| */ | |
| public function getUrl() | |
| { | |
| return $this->_url; | |
| } | |
| /** | |
| * Returns true if any error has occurred | |
| * | |
| * @access public | |
| * @return bool | |
| */ | |
| public function isError() | |
| { | |
| return !empty($this->_error); | |
| } | |
| } |