forked from blallo/rss-bridge
248 lines
7.2 KiB
PHP
248 lines
7.2 KiB
PHP
<?php
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/*
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TODO :
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- factorize the annotation system
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- factorize to adapter : Format, Bridge, Cache(actually code is almost the same)
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- implement annotation cache for entrance page
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- Cache : I think logic must be change as least to avoid to reconvert object from json in FileCache case.
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- add namespace to avoid futur problem ?
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- see FIXME mentions in the code
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- implement header('X-Cached-Version: '.date(DATE_ATOM, filemtime($cachefile)));
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*/
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// Defines the minimum required PHP version for RSS-Bridge
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define('PHP_VERSION_REQUIRED', '5.6.0');
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//define('PROXY_URL', 'tcp://192.168.0.0:28');
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// Set to true if you allow users to disable proxy usage for specific bridges
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define('PROXY_BYBRIDGE', false);
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// Comment this line or keep PROXY_NAME empty to display PROXY_URL instead
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define('PROXY_NAME', 'Hidden Proxy Name');
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date_default_timezone_set('UTC');
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error_reporting(0);
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// Specify directory for cached files (using FileCache)
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define('CACHE_DIR', __DIR__ . '/cache');
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/*
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Create a file named 'DEBUG' for enabling debug mode.
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For further security, you may put whitelisted IP addresses
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in the 'DEBUG' file, one IP per line. Empty file allows anyone(!).
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Debugging allows displaying PHP error messages and bypasses the cache: this can allow a malicious
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client to retrieve data about your server and hammer a provider throught your rss-bridge instance.
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*/
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if(file_exists('DEBUG')){
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$debug_enabled = true;
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$debug_whitelist = trim(file_get_contents('DEBUG'));
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if(strlen($debug_whitelist) > 0){
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$debug_enabled = false;
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foreach(explode("\n", $debug_whitelist) as $allowed_ip){
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if(trim($allowed_ip) === $_SERVER['REMOTE_ADDR']){
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$debug_enabled = true;
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break;
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}
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}
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}
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if($debug_enabled){
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ini_set('display_errors', '1');
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error_reporting(E_ALL);
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define('DEBUG', true);
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}
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}
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require_once __DIR__ . '/lib/RssBridge.php';
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// Check PHP version
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if(version_compare(PHP_VERSION, PHP_VERSION_REQUIRED) === -1)
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die('RSS-Bridge requires at least PHP version ' . PHP_VERSION_REQUIRED . '!');
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// extensions check
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if(!extension_loaded('openssl'))
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die('"openssl" extension not loaded. Please check "php.ini"');
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if(!extension_loaded('libxml'))
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die('"libxml" extension not loaded. Please check "php.ini"');
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// configuration checks
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if(ini_get('allow_url_fopen') !== "1")
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die('"allow_url_fopen" is not set to "1". Please check "php.ini');
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// FIXME : beta test UA spoofing, please report any blacklisting by PHP-fopen-unfriendly websites
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$userAgent = 'Mozilla/5.0(X11; Linux x86_64; rv:30.0)';
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$userAgent .= ' Gecko/20121202 Firefox/30.0(rss-bridge/0.1;';
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$userAgent .= '+https://github.com/RSS-Bridge/rss-bridge)';
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ini_set('user_agent', $userAgent);
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// default whitelist
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$whitelist_file = './whitelist.txt';
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$whitelist_default = array(
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"BandcampBridge",
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"CryptomeBridge",
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"DansTonChatBridge",
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"DuckDuckGoBridge",
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"FacebookBridge",
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"FlickrExploreBridge",
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"GooglePlusPostBridge",
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"GoogleSearchBridge",
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"IdenticaBridge",
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"InstagramBridge",
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"OpenClassroomsBridge",
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"PinterestBridge",
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"ScmbBridge",
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"TwitterBridge",
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"WikipediaBridge",
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"YoutubeBridge");
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try {
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Bridge::setDir(__DIR__ . '/bridges/');
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Format::setDir(__DIR__ . '/formats/');
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Cache::setDir(__DIR__ . '/caches/');
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if(!file_exists($whitelist_file)){
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$whitelist_selection = $whitelist_default;
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$whitelist_write = implode("\n", $whitelist_default);
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file_put_contents($whitelist_file, $whitelist_write);
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} else {
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$whitelist_file_content = file_get_contents($whitelist_file);
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if($whitelist_file_content != "*\n") {
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$whitelist_selection = explode("\n", $whitelist_file_content);
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} else {
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$whitelist_selection = Bridge::listBridges();
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}
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}
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$action = filter_input(INPUT_GET, 'action');
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$bridge = filter_input(INPUT_GET, 'bridge');
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if($action === 'display' && !empty($bridge)){
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// DEPRECATED: 'nameBridge' scheme is replaced by 'name' in bridge parameter values
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// this is to keep compatibility until futher complete removal
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if(($pos = strpos($bridge, 'Bridge')) === (strlen($bridge) - strlen('Bridge'))){
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$bridge = substr($bridge, 0, $pos);
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}
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$format = filter_input(INPUT_GET, 'format');
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// DEPRECATED: 'nameFormat' scheme is replaced by 'name' in format parameter values
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// this is to keep compatibility until futher complete removal
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if(($pos = strpos($format, 'Format')) === (strlen($format) - strlen('Format'))){
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$format = substr($format, 0, $pos);
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}
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// whitelist control
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if(!Bridge::isWhitelisted($whitelist_selection, $bridge)){
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throw new \HttpException('This bridge is not whitelisted', 401);
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die;
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}
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// Data retrieval
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$bridge = Bridge::create($bridge);
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$noproxy = filter_input(INPUT_GET, '_noproxy', FILTER_VALIDATE_BOOLEAN);
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if(defined('PROXY_URL') && PROXY_BYBRIDGE && $noproxy){
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define('NOPROXY', true);
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}
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$params = $_GET;
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// Initialize cache
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$cache = Cache::create('FileCache');
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$cache->setPath(CACHE_DIR);
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$cache->purgeCache(86400); // 24 hours
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$cache->setParameters($params);
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unset($params['action']);
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unset($params['bridge']);
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unset($params['format']);
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unset($params['_noproxy']);
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// Load cache & data
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$bridge->setCache($cache);
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$bridge->setDatas($params);
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// Data transformation
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try {
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$format = Format::create($format);
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$format->setItems($bridge->getItems());
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$format->setExtraInfos($bridge->getExtraInfos());
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$format->display();
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} catch(Exception $e){
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echo "The bridge has crashed. You should report this to the bridges maintainer";
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}
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die;
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}
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}
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catch(HttpException $e){
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header('HTTP/1.1 ' . $e->getCode() . ' ' . Http::getMessageForCode($e->getCode()));
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header('Content-Type: text/plain');
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die($e->getMessage());
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}
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catch(\Exception $e){
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die($e->getMessage());
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}
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$formats = Format::searchInformation();
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?>
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<meta name="description" content="Rss-bridge" />
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<title>RSS-Bridge</title>
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<link href="css/style.css" rel="stylesheet">
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</head>
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<body>
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<?php
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$status = '';
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if(defined('DEBUG') && DEBUG === true){
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$status .= 'debug mode active';
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}
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echo <<<EOD
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<header>
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<h1>RSS-Bridge</h1>
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<h2>·Reconnecting the Web·</h2>
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<p class="status">{$status}</p>
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</header>
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EOD;
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$activeFoundBridgeCount = 0;
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$showInactive = filter_input(INPUT_GET, 'show_inactive', FILTER_VALIDATE_BOOLEAN);
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$inactiveBridges = '';
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$bridgeList = Bridge::listBridges();
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foreach($bridgeList as $bridgeName){
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if(Bridge::isWhitelisted($whitelist_selection, $bridgeName)){
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echo displayBridgeCard($bridgeName, $formats);
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$activeFoundBridgeCount++;
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} elseif($showInactive) {
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// inactive bridges
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$inactiveBridges .= displayBridgeCard($bridgeName, $formats, false) . PHP_EOL;
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}
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}
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echo $inactiveBridges;
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?>
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<section>
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<a href="https://github.com/RSS-Bridge/rss-bridge">RSS-Bridge alpha 0.2 ~ Public Domain</a><br />
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<?= $activeFoundBridgeCount; ?>/<?= count($bridgeList) ?> active bridges. <br />
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<?php
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if($activeFoundBridgeCount !== count($bridgeList)){
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// FIXME: This should be done in pure CSS
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if(!$showInactive)
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echo '<a href="?show_inactive=1"><button class="small">Show inactive bridges</button></a><br />';
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else
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echo '<a href="?show_inactive=0"><button class="small">Hide inactive bridges</button></a><br />';
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}
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?>
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</section>
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</body>
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</html>
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