138 lines
4.2 KiB

<?php
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use p3k\XRay\Formats;
class Parse {
public $http;
public $mc;
private $_cacheTime = 120;
private $_pretty = false;
private static $_version = '1.4.25';
public static function useragent() {
return 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36 XRay/'.self::$_version.' ('.\Config::$base.')';
}
public function __construct() {
$this->http = new p3k\HTTP(self::useragent());
if(Config::$cache && class_exists('Memcache')) {
$this->mc = new Memcache();
$this->mc->addServer('127.0.0.1');
}
}
public static function debug($msg, $header='X-Parse-Debug') {
syslog(LOG_INFO, $msg);
if(array_key_exists('REMOTE_ADDR', $_SERVER))
header($header . ": " . $msg);
}
private function respond(Response $response, $code, $params, $headers=[]) {
$response->setStatusCode($code);
foreach($headers as $k=>$v) {
$response->headers->set($k, $v);
}
$response->headers->set('Content-Type', 'application/json');
$response->headers->set('Version', 'XRay/'.self::$_version.' php-mf2/'.p3k\XRay\phpmf2_version());
$opts = JSON_UNESCAPED_SLASHES;
if($this->_pretty) $opts += JSON_PRETTY_PRINT;
$response->setContent(json_encode($params, $opts)."\n");
return $response;
}
public function parse(Request $request, Response $response) {
$opts = [];
if($request->get('timeout')) {
// We might make 2 HTTP requests, so each request gets half the desired timeout
$opts['timeout'] = $request->get('timeout') / 2;
}
if($request->get('max_redirects') !== null) {
$opts['max_redirects'] = (int)$request->get('max_redirects');
}
if($request->get('target')) {
$opts['target'] = $request->get('target');
}
if($request->get('expect')) {
$opts['expect'] = $request->get('expect');
}
if($request->get('pretty')) {
$this->_pretty = true;
}
$url = $request->get('url');
$html = $request->get('html') ?: $request->get('body');
if(!$url && !$html) {
return $this->respond($response, 400, [
'error' => 'missing_url',
'error_description' => 'Provide a URL or HTML to fetch',
]);
}
if($html) {
// If HTML is provided in the request, parse that, and use the URL provided as the base URL for mf2 resolving
$result['body'] = $html;
$result['url'] = $url;
$result['code'] = null;
} else {
$fetcher = new p3k\XRay\Fetcher($this->http);
$fields = [
'twitter_api_key','twitter_api_secret','twitter_access_token','twitter_access_token_secret',
'facebook_app_id', 'facebook_app_secret',
'github_access_token',
'token'
];
foreach($fields as $f) {
if($v=$request->get($f))
$opts[$f] = $v;
}
$result = $fetcher->fetch($url, $opts);
if(!empty($result['error'])) {
$error_code = isset($result['error_code']) ? $result['error_code'] : 200;
unset($result['error_code']);
return $this->respond($response, $error_code, $result);
}
}
$parser = new p3k\XRay\Parser($this->http);
$parsed = $parser->parse($result, $opts);
// Allow the parser to override the HTTP response code, e.g. a meta-equiv tag
if(isset($parsed['code']))
$result['code'] = $parsed['code'];
if(!empty($parsed['error'])) {
$error_code = isset($parsed['error_code']) ? $parsed['error_code'] : 200;
unset($parsed['error_code']);
return $this->respond($response, $error_code, $parsed);
} else {
$data = [
'data' => $parsed['data'],
'url' => $result['url'],
'code' => $result['code'],
];
if(isset($parsed['info']))
$data['info'] = $parsed['info'];
if($request->get('include_original') && isset($parsed['original']))
$data['original'] = $parsed['original'];
if(isset($parsed['source-format']))
$data['source-format'] = $parsed['source-format'];
if(isset($parsed['url']) && $parsed['url'] != $result['url'])
$data['parsed-url'] = $parsed['url'];
return $this->respond($response, 200, $data);
}
}
}