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<?php
/*
* Laconica - a distributed open-source microblogging tool
* Copyright (C) 2008, Control Yourself, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
if (!defined('LACONICA')) { exit(1); }
class ShortUrlApi
{
protected $service_url;
protected $long_limit = 27;
function __construct($service_url)
{
$this->service_url = $service_url;
}
function shorten($url)
{
if ($this->is_long($url)) return $this->shorten_imp($url);
return $url;
}
protected function shorten_imp($url) {
return "To Override";
}
private function is_long($url) {
return strlen($url) >= $this->long_limit;
}
protected function http_post($data) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $this->service_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
$response = curl_exec($ch);
$code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if (($code < 200) || ($code >= 400)) return false;
return $response;
}
protected function http_get($url) {
$encoded_url = urlencode($url);
return file_get_contents("{$this->service_url}$encoded_url");
}
protected function tidy($response) {
$response = str_replace(' ', ' ', $response);
$config = array('output-xhtml' => true);
$tidy = new tidy;
$tidy->parseString($response, $config, 'utf8');
$tidy->cleanRepair();
return (string)$tidy;
}
}
class LilUrl extends ShortUrlApi
{
function __construct()
{
parent::__construct('http://ur1.ca/');
}
protected function shorten_imp($url) {
$data['longurl'] = $url;
$response = $this->http_post($data);
if (!$response) return $url;
$y = @simplexml_load_string($response);
if (!isset($y->body)) return $url;
$x = $y->body->p[0]->a->attributes();
if (isset($x['href'])) return $x['href'];
return $url;
}
}
class PtitUrl extends ShortUrlApi
{
function __construct()
{
parent::__construct('http://ptiturl.com/?creer=oui&action=Reduire&url=');
}
protected function shorten_imp($url) {
$response = $this->http_get($url);
if (!$response) return $url;
$response = $this->tidy($response);
$y = @simplexml_load_string($response);
if (!isset($y->body)) return $url;
$xml = $y->body->center->table->tr->td->pre->a->attributes();
if (isset($xml['href'])) return $xml['href'];
return $url;
}
}
class TightUrl extends ShortUrlApi
{
function __construct()
{
parent::__construct('http://2tu.us/?save=y&url=');
}
protected function shorten_imp($url) {
$response = $this->http_get($url);
if (!$response) return $url;
$response = $this->tidy($response);
$y = @simplexml_load_string($response);
if (!isset($y->body)) return $url;
$xml = $y->body->p[0]->code[0]->a->attributes();
if (isset($xml['href'])) return $xml['href'];
return $url;
}
}
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