PrivateBin/lib/YourlsProxy.php
2022-10-23 08:16:05 +02:00

123 lines
3.0 KiB
PHP

<?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 1.4.0
*/
namespace PrivateBin;
use PrivateBin\Configuration;
/**
* 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 not pointing to our PrivateBin instance.';
return;
}
// Init the CURL session
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $conf->getKey("apiurl", "yourls"));
curl_setopt($ch, CURLOPT_HEADER, 0); // No header in the result
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); // Return, do not echo result
curl_setopt($ch, CURLOPT_POST, 1); // This is a POST request
curl_setopt($ch, CURLOPT_POSTFIELDS, array( // Data to POST
'signature' => $conf->getKey("signature", "yourls"),
'format' => 'json',
'action' => 'shorturl',
'url' => $link
));
// Fetch and return content
$data = curl_exec($ch);
curl_close($ch);
if ($data === false || !is_string($data)) {
$this->_error = 'Error calling YOURLS. Probably a configuration issue, like wrong or missing "apiurl" or "signature".';
return;
}
$data = json_decode($data, true);
if (
!is_null($data) &&
array_key_exists('statusCode', $data) &&
array_key_exists('shorturl', $data) &&
$data['statusCode'] == 200
) {
$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);
}
}