core: Implement action factory (#1002)
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12 changed files with 705 additions and 279 deletions
286
index.php
286
index.php
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@ -51,287 +51,15 @@ $whitelist_default = array(
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try {
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Bridge::setWhitelist($whitelist_default);
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$actionFac = new \ActionFactory();
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$actionFac->setWorkingDir(PATH_LIB_ACTIONS);
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$showInactive = filter_input(INPUT_GET, 'show_inactive', FILTER_VALIDATE_BOOLEAN);
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$action = array_key_exists('action', $params) ? $params['action'] : null;
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$bridge = array_key_exists('bridge', $params) ? $params['bridge'] : null;
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// Return list of bridges as JSON formatted text
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if($action === 'list') {
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$list = new StdClass();
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$list->bridges = array();
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$list->total = 0;
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foreach(Bridge::getBridgeNames() as $bridgeName) {
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$bridge = Bridge::create($bridgeName);
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if($bridge === false) { // Broken bridge, show as inactive
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$list->bridges[$bridgeName] = array(
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'status' => 'inactive'
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);
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continue;
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}
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$status = Bridge::isWhitelisted($bridgeName) ? 'active' : 'inactive';
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$list->bridges[$bridgeName] = array(
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'status' => $status,
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'uri' => $bridge->getURI(),
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'name' => $bridge->getName(),
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'icon' => $bridge->getIcon(),
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'parameters' => $bridge->getParameters(),
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'maintainer' => $bridge->getMaintainer(),
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'description' => $bridge->getDescription()
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);
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}
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$list->total = count($list->bridges);
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header('Content-Type: application/json');
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echo json_encode($list, JSON_PRETTY_PRINT);
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} elseif($action === 'detect') {
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$targetURL = $params['url']
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or returnClientError('You must specify a url!');
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$format = $params['format']
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or returnClientError('You must specify a format!');
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foreach(Bridge::getBridgeNames() as $bridgeName) {
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if(!Bridge::isWhitelisted($bridgeName)) {
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continue;
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}
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$bridge = Bridge::create($bridgeName);
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if($bridge === false) {
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continue;
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}
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$bridgeParams = $bridge->detectParameters($targetURL);
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if(is_null($bridgeParams)) {
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continue;
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}
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$bridgeParams['bridge'] = $bridgeName;
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$bridgeParams['format'] = $format;
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header('Location: ?action=display&' . http_build_query($bridgeParams), true, 301);
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die();
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}
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returnClientError('No bridge found for given URL: ' . $targetURL);
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} elseif($action === 'display' && !empty($bridge)) {
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$format = $params['format']
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or returnClientError('You must specify a format!');
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// DEPRECATED: 'nameFormat' scheme is replaced by 'name' in format parameter values
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// this is to keep compatibility until futher complete removal
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if(($pos = strpos($format, 'Format')) === (strlen($format) - strlen('Format'))) {
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$format = substr($format, 0, $pos);
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}
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// whitelist control
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if(!Bridge::isWhitelisted($bridge)) {
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throw new \Exception('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 = array_key_exists('_noproxy', $params) && filter_var($params['_noproxy'], FILTER_VALIDATE_BOOLEAN);
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if(defined('PROXY_URL') && PROXY_BYBRIDGE && $noproxy) {
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define('NOPROXY', true);
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}
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// Cache timeout
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$cache_timeout = -1;
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if(array_key_exists('_cache_timeout', $params)) {
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if(!CUSTOM_CACHE_TIMEOUT) {
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unset($params['_cache_timeout']);
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$uri = parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH) . '?' . http_build_query($params);
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header('Location: ' . $uri, true, 301);
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die();
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}
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$cache_timeout = filter_var($params['_cache_timeout'], FILTER_VALIDATE_INT);
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} else {
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$cache_timeout = $bridge->getCacheTimeout();
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}
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// Remove parameters that don't concern bridges
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$bridge_params = array_diff_key(
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$params,
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array_fill_keys(
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array(
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'action',
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'bridge',
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'format',
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'_noproxy',
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'_cache_timeout',
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'_error_time'
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), '')
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);
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// Remove parameters that don't concern caches
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$cache_params = array_diff_key(
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$params,
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array_fill_keys(
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array(
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'action',
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'format',
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'_noproxy',
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'_cache_timeout',
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'_error_time'
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), '')
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);
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// Initialize cache
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$cache = Cache::create('FileCache');
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$cache->setPath(PATH_CACHE);
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$cache->purgeCache(86400); // 24 hours
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$cache->setParameters($cache_params);
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$items = array();
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$infos = array();
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$mtime = $cache->getTime();
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if($mtime !== false
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&& (time() - $cache_timeout < $mtime)
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&& !Debug::isEnabled()) { // Load cached data
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// Send "Not Modified" response if client supports it
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// Implementation based on https://stackoverflow.com/a/10847262
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if(isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
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$stime = strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']);
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if($mtime <= $stime) { // Cached data is older or same
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header('Last-Modified: ' . gmdate('D, d M Y H:i:s ', $mtime) . 'GMT', true, 304);
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die();
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}
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}
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$cached = $cache->loadData();
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if(isset($cached['items']) && isset($cached['extraInfos'])) {
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foreach($cached['items'] as $item) {
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$items[] = new \FeedItem($item);
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}
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$infos = $cached['extraInfos'];
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}
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} else { // Collect new data
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try {
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$bridge->setDatas($bridge_params);
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$bridge->collectData();
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$items = $bridge->getItems();
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// Transform "legacy" items to FeedItems if necessary.
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// Remove this code when support for "legacy" items ends!
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if(isset($items[0]) && is_array($items[0])) {
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$feedItems = array();
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foreach($items as $item) {
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$feedItems[] = new \FeedItem($item);
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}
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$items = $feedItems;
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}
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$infos = array(
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'name' => $bridge->getName(),
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'uri' => $bridge->getURI(),
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'icon' => $bridge->getIcon()
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);
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} catch(Error $e) {
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error_log($e);
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$item = new \FeedItem();
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// Create "new" error message every 24 hours
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$params['_error_time'] = urlencode((int)(time() / 86400));
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// Error 0 is a special case (i.e. "trying to get property of non-object")
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if($e->getCode() === 0) {
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$item->setTitle('Bridge encountered an unexpected situation! (' . $params['_error_time'] . ')');
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} else {
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$item->setTitle('Bridge returned error ' . $e->getCode() . '! (' . $params['_error_time'] . ')');
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}
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$item->setURI(
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(isset($_SERVER['REQUEST_URI']) ? parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH) : '')
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. '?'
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. http_build_query($params)
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);
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$item->setTimestamp(time());
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$item->setContent(buildBridgeException($e, $bridge));
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$items[] = $item;
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} catch(Exception $e) {
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error_log($e);
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$item = new \FeedItem();
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// Create "new" error message every 24 hours
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$params['_error_time'] = urlencode((int)(time() / 86400));
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$item->setURI(
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(isset($_SERVER['REQUEST_URI']) ? parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH) : '')
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. '?'
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. http_build_query($params)
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);
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$item->setTitle('Bridge returned error ' . $e->getCode() . '! (' . $params['_error_time'] . ')');
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$item->setTimestamp(time());
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$item->setContent(buildBridgeException($e, $bridge));
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$items[] = $item;
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}
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// Store data in cache
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$cache->saveData(array(
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'items' => array_map(function($i){ return $i->toArray(); }, $items),
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'extraInfos' => $infos
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));
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}
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// Data transformation
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try {
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$format = Format::create($format);
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$format->setItems($items);
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$format->setExtraInfos($infos);
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$format->setLastModified($cache->getTime());
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$format->display();
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} catch(Error $e) {
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error_log($e);
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header('Content-Type: text/html', true, $e->getCode());
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die(buildTransformException($e, $bridge));
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} catch(Exception $e) {
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error_log($e);
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header('Content-Type: text/html', true, $e->getCode());
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die(buildTransformException($e, $bridge));
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}
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if(array_key_exists('action', $params)) {
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$action = $actionFac->create($params['action']);
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$action->setUserData($params);
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$action->execute();
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} else {
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$showInactive = filter_input(INPUT_GET, 'show_inactive', FILTER_VALIDATE_BOOLEAN);
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echo BridgeList::create($showInactive);
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}
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} catch(\Exception $e) {
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