<?php
/*
- * Laconica - a distributed open-source microblogging tool
- * Copyright (C) 2008, Controlez-Vous, Inc.
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2008, 2009, StatusNet, 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
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-if (!defined('LACONICA')) { exit(1); }
+if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
require_once INSTALLDIR.'/classes/Memcached_DataObject.php';
+require_once INSTALLDIR.'/classes/File.php';
+require_once INSTALLDIR.'/classes/File_oembed.php';
+
+define('USER_AGENT', 'StatusNet user agent / file probe');
/**
* Table Definition for file_redirection
*/
-class File_redirection extends Memcached_DataObject
+class File_redirection extends Memcached_DataObject
{
###START_AUTOCODE
/* the code below is auto generated do not remove the above tag */
public $__table = 'file_redirection'; // table name
- public $id; // int(11) not_null primary_key group_by
- public $url; // varchar(255) unique_key
- public $file_id; // int(11) group_by
- public $redirections; // int(11) group_by
- public $httpcode; // int(11) group_by
+ public $url; // varchar(255) primary_key not_null
+ public $file_id; // int(4)
+ public $redirections; // int(4)
+ public $httpcode; // int(4)
+ public $modified; // timestamp() not_null default_CURRENT_TIMESTAMP
/* Static get */
- function staticGet($k,$v=NULL) { return DB_DataObject::staticGet('File_redirection',$k,$v); }
+ function staticGet($k,$v=NULL) { return Memcached_DataObject::staticGet('File_redirection',$k,$v); }
/* the code above is auto generated do not remove the tag below */
###END_AUTOCODE
+
+ static function _commonHttp($url, $redirs) {
+ $request = new HTTPClient($url);
+ $request->setConfig(array(
+ 'connect_timeout' => 10, // # seconds to wait
+ 'max_redirs' => $redirs, // # max number of http redirections to follow
+ 'follow_redirects' => true, // Follow redirects
+ 'store_body' => false, // We won't need body content here.
+ ));
+ return $request;
+ }
+
+ function _redirectWhere_imp($short_url, $redirs = 10, $protected = false) {
+ if ($redirs < 0) return false;
+
+ // let's see if we know this...
+ $a = File::staticGet('url', $short_url);
+
+ if (!empty($a)) {
+ // this is a direct link to $a->url
+ return $a->url;
+ } else {
+ $b = File_redirection::staticGet('url', $short_url);
+ if (!empty($b)) {
+ // this is a redirect to $b->file_id
+ $a = File::staticGet('id', $b->file_id);
+ return $a->url;
+ }
+ }
+
+ if(strpos($short_url,'://') === false){
+ return $short_url;
+ }
+ try {
+ $request = self::_commonHttp($short_url, $redirs);
+ // Don't include body in output
+ $request->setMethod(HTTP_Request2::METHOD_HEAD);
+ $response = $request->send();
+
+ if (405 == $response->getStatus()) {
+ // Server doesn't support HEAD method? Can this really happen?
+ // We'll try again as a GET and ignore the response data.
+ $request = self::_commonHttp($short_url, $redirs);
+ $response = $request->send();
+ }
+ } catch (Exception $e) {
+ // Invalid URL or failure to reach server
+ return $short_url;
+ }
+
+ if ($response->getRedirectCount() && File::isProtected($response->getUrl())) {
+ // Bump back up the redirect chain until we find a non-protected URL
+ return self::_redirectWhere_imp($short_url, $response->getRedirectCount() - 1, true);
+ }
+
+ $ret = array('code' => $response->getStatus()
+ , 'redirects' => $response->getRedirectCount()
+ , 'url' => $response->getUrl());
+
+ $type = $response->getHeader('Content-Type');
+ if ($type) $ret['type'] = $type;
+ if ($protected) $ret['protected'] = true;
+ $size = $response->getHeader('Content-Length'); // @fixme bytes?
+ if ($size) $ret['size'] = $size;
+ $time = $response->getHeader('Last-Modified');
+ if ($time) $ret['time'] = strtotime($time);
+ return $ret;
+ }
+
+ function where($in_url) {
+ $ret = File_redirection::_redirectWhere_imp($in_url);
+ return $ret;
+ }
+
+ function makeShort($long_url) {
+
+ $canon = File_redirection::_canonUrl($long_url);
+
+ $short_url = File_redirection::_userMakeShort($canon);
+
+ // Did we get one? Is it shorter?
+ if (!empty($short_url) && mb_strlen($short_url) < mb_strlen($long_url)) {
+ return $short_url;
+ } else {
+ return $long_url;
+ }
+ }
+
+ function _userMakeShort($long_url) {
+ $short_url = common_shorten_url($long_url);
+ if (!empty($short_url) && $short_url != $long_url) {
+ $short_url = (string)$short_url;
+ // store it
+ $file = File::staticGet('url', $long_url);
+ if (empty($file)) {
+ $redir_data = File_redirection::where($long_url);
+ $file = File::saveNew($redir_data, $long_url);
+ $file_id = $file->id;
+ if (!empty($redir_data['oembed']['json'])) {
+ File_oembed::saveNew($redir_data['oembed']['json'], $file_id);
+ }
+ } else {
+ $file_id = $file->id;
+ }
+ $file_redir = File_redirection::staticGet('url', $short_url);
+ if (empty($file_redir)) {
+ $file_redir = new File_redirection;
+ $file_redir->url = $short_url;
+ $file_redir->file_id = $file_id;
+ $file_redir->insert();
+ }
+ return $short_url;
+ }
+ return null;
+ }
+
+ function _canonUrl($in_url, $default_scheme = 'http://') {
+ if (empty($in_url)) return false;
+ $out_url = $in_url;
+ $p = parse_url($out_url);
+ if (empty($p['host']) || empty($p['scheme'])) {
+ list($scheme) = explode(':', $in_url, 2);
+ switch ($scheme) {
+ case 'fax':
+ case 'tel':
+ $out_url = str_replace('.-()', '', $out_url);
+ break;
+
+ case 'mailto':
+ case 'aim':
+ case 'jabber':
+ case 'xmpp':
+ // don't touch anything
+ break;
+
+ default:
+ $out_url = $default_scheme . ltrim($out_url, '/');
+ $p = parse_url($out_url);
+ if (empty($p['scheme'])) return false;
+ break;
+ }
+ }
+
+ if (('ftp' == $p['scheme']) || ('ftps' == $p['scheme']) || ('http' == $p['scheme']) || ('https' == $p['scheme'])) {
+ if (empty($p['host'])) return false;
+ if (empty($p['path'])) {
+ $out_url .= '/';
+ }
+ }
+
+ return $out_url;
+ }
+
+ function saveNew($data, $file_id, $url) {
+ $file_redir = new File_redirection;
+ $file_redir->url = $url;
+ $file_redir->file_id = $file_id;
+ $file_redir->redirections = intval($data['redirects']);
+ $file_redir->httpcode = intval($data['code']);
+ $file_redir->insert();
+ }
}
+