PrivateBin/lib/YourlsProxy.php
2022-10-23 13:09:54 +02:00

133 lines
3.2 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 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);
}
}