130 lines
3.1 KiB
PHP
130 lines
3.1 KiB
PHP
<?php
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/**
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* PrivateBin
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*
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* a zero-knowledge paste bin
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*
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* @link https://github.com/PrivateBin/PrivateBin
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* @copyright 2012 Sébastien SAUVAGE (sebsauvage.net)
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* @license https://www.opensource.org/licenses/zlib-license.php The zlib/libpng License
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* @version 1.4.0
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*/
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namespace PrivateBin;
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use Exception;
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use PrivateBin\Configuration;
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use PrivateBin\Json;
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/**
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* YourlsProxy
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*
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* Forwards a URL for shortening to YOURLS (your own URL shortener) and stores
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* the result.
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*/
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class YourlsProxy
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{
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/**
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* error message
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*
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* @access private
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* @var string
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*/
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private $_error = '';
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/**
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* shortened URL
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*
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* @access private
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* @var string
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*/
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private $_url = '';
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/**
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* constructor
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*
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* initializes and runs PrivateBin
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*
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* @access public
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* @param string $link
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*/
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public function __construct(Configuration $conf, $link)
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{
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if (strpos($link, $conf->getKey('basepath') . '/?') === false) {
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$this->_error = 'Trying to shorten a URL not pointing to our PrivateBin instance.';
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return;
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}
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// Init the CURL session
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$ch = curl_init();
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curl_setopt($ch, CURLOPT_URL, $conf->getKey("apiurl", "yourls"));
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curl_setopt($ch, CURLOPT_HEADER, 0); // No header in the result
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); // Return, do not echo result
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curl_setopt($ch, CURLOPT_POST, 1); // This is a POST request
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curl_setopt($ch, CURLOPT_POSTFIELDS, array( // Data to POST
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'signature' => $conf->getKey("signature", "yourls"),
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'format' => 'json',
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'action' => 'shorturl',
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'url' => $link
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));
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// Fetch and return content
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$data = curl_exec($ch);
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curl_close($ch);
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if ($data === false || !is_string($data)) {
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$this->_error = 'Error calling YOURLS. Probably a configuration issue, like wrong or missing "apiurl" or "signature".';
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return;
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}
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try {
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$data = Json::decode($data);
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} catch (Exception $e) {
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$this->_error = $e->getMessage();
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return;
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}
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if (
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!is_null($data) &&
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array_key_exists('statusCode', $data) &&
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array_key_exists('shorturl', $data) &&
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$data['statusCode'] == 200
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) {
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$this->_url = $data['shorturl'];
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} else {
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$this->_error = 'Error parsing YOURLS response.';
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}
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}
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/**
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* Returns the (untranslated) error message
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*
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* @access public
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* @return string
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*/
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public function getError()
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{
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return $this->_error;
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}
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/**
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* Returns the shortened URL
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*
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* @access public
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* @return string
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*/
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public function getUrl()
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{
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return $this->_url;
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}
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/**
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* Returns true if any error has occurred
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*
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* @access public
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* @return bool
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*/
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public function isError()
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{
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return !empty($this->_error);
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}
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}
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