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rewrote short url stuff to handle new file/url classes (redirections, oembed, mimetypes, etc.)

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This commit is contained in:
Robin Millette
2009-05-13 14:27:32 -04:00
parent d010d811ba
commit 3b7ee5a5f9
10 changed files with 383 additions and 237 deletions
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231
classes/File_redirection.php
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@@ -20,6 +20,11 @@
if (!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', 'Laconica user agent / file probe');
/**
* Table Definition for file_redirection
@@ -42,4 +47,230 @@ class File_redirection extends Memcached_DataObject
/* the code above is auto generated do not remove the tag below */
###END_AUTOCODE
function _commonCurl($url, $redirs) {
$curlh = curl_init();
curl_setopt($curlh, CURLOPT_URL, $url);
curl_setopt($curlh, CURLOPT_AUTOREFERER, true); // # setup referer header when folowing redirects
curl_setopt($curlh, CURLOPT_CONNECTTIMEOUT, 10); // # seconds to wait
curl_setopt($curlh, CURLOPT_MAXREDIRS, $redirs); // # max number of http redirections to follow
curl_setopt($curlh, CURLOPT_USERAGENT, USER_AGENT);
curl_setopt($curlh, CURLOPT_FOLLOWLOCATION, true); // Follow redirects
curl_setopt($curlh, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curlh, CURLOPT_FILETIME, true);
curl_setopt($curlh, CURLOPT_HEADER, true); // Include header in output
return $curlh;
}
function _redirectWhere_imp($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->id)) {
$b = File_redirection::staticGet('url', $short_url);
if (empty($b->id)) {
// we'll have to figure it out
} else {
// this is a redirect to $b->file_id
$a = File::staticGet($b->file_id);
$url = $a->url;
}
} else {
// this is a direct link to $a->url
$url = $a->url;
}
if (isset($url)) {
return $url;
}
$curlh = File_redirection::_commonCurl($short_url, $redirs);
// Don't include body in output
curl_setopt($curlh, CURLOPT_NOBODY, true);
curl_exec($curlh);
$info = curl_getinfo($curlh);
curl_close($curlh);
if (405 == $info['http_code']) {
$curlh = File_redirection::_commonCurl($short_url, $redirs);
curl_exec($curlh);
$info = curl_getinfo($curlh);
curl_close($curlh);
}
if (!empty($info['redirect_count']) && File::isProtected($info['url'])) {
return File_redirection::_redirectWhere_imp($short_url, $info['redirect_count'] - 1, true);
}
$ret = array('code' => $info['http_code']
, 'redirects' => $info['redirect_count']
, 'url' => $info['url']);
if (!empty($info['content_type'])) $ret['type'] = $info['content_type'];
if ($protected) $ret['protected'] = true;
if (!empty($info['download_content_length'])) $ret['size'] = $info['download_content_length'];
if (isset($info['filetime']) && ($info['filetime'] > 0)) $ret['time'] = $info['filetime'];
return $ret;
}
function where($in_url) {
$ret = File_redirection::_redirectWhere_imp($in_url);
return $ret;
}
function makeShort($long_url) {
$long_url = File_redirection::_canonUrl($long_url);
// do we already know this long_url and have a short redirection for it?
$file = new File;
$file_redir = new File_redirection;
$file->url = $long_url;
$file->joinAdd($file_redir);
$file->selectAdd('length(file_redirection.url) as len');
$file->limit(1);
$file->orderBy('len');
$file->find(true);
if (!empty($file->id)) {
return $file->url;
}
// if yet unknown, we must find a short url according to user settings
$short_url = File_redirection::_userMakeShort($long_url, common_current_user());
return $short_url;
}
function _userMakeShort($long_url, $user) {
if (empty($user)) {
// common current user does not find a user when called from the XMPP daemon
// therefore we'll set one here fix, so that XMPP given URLs may be shortened
$user->urlshorteningservice = 'ur1.ca';
}
$curlh = curl_init();
curl_setopt($curlh, CURLOPT_CONNECTTIMEOUT, 20); // # seconds to wait
curl_setopt($curlh, CURLOPT_USERAGENT, 'Laconica');
curl_setopt($curlh, CURLOPT_RETURNTRANSFER, true);
switch($user->urlshorteningservice) {
case 'ur1.ca':
require_once INSTALLDIR.'/lib/Shorturl_api.php';
$short_url_service = new LilUrl;
$short_url = $short_url_service->shorten($long_url);
break;
case '2tu.us':
$short_url_service = new TightUrl;
require_once INSTALLDIR.'/lib/Shorturl_api.php';
$short_url = $short_url_service->shorten($long_url);
break;
case 'ptiturl.com':
require_once INSTALLDIR.'/lib/Shorturl_api.php';
$short_url_service = new PtitUrl;
$short_url = $short_url_service->shorten($long_url);
break;
case 'bit.ly':
curl_setopt($curlh, CURLOPT_URL, 'http://bit.ly/api?method=shorten&long_url='.urlencode($long_url));
$short_url = current(json_decode(curl_exec($curlh))->results)->hashUrl;
break;
case 'is.gd':
curl_setopt($curlh, CURLOPT_URL, 'http://is.gd/api.php?longurl='.urlencode($long_url));
$short_url = curl_exec($curlh);
break;
case 'snipr.com':
curl_setopt($curlh, CURLOPT_URL, 'http://snipr.com/site/snip?r=simple&link='.urlencode($long_url));
$short_url = curl_exec($curlh);
break;
case 'metamark.net':
curl_setopt($curlh, CURLOPT_URL, 'http://metamark.net/api/rest/simple?long_url='.urlencode($long_url));
$short_url = curl_exec($curlh);
break;
case 'tinyurl.com':
curl_setopt($curlh, CURLOPT_URL, 'http://tinyurl.com/api-create.php?url='.urlencode($long_url));
$short_url = curl_exec($curlh);
break;
default:
$short_url = false;
}
curl_close($curlh);
if ($short_url) {
$short_url = (string)$short_url;
if(1) {
// 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 $long_url;
}
function _canonUrl($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']) || ('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();
}
}