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<?php /** * Handler performs request handling and file proxying via stepping in front of the 404 handler * * @package Weebly * @subpackage ResellerServices * @author Dustin Doiron <dustin@weebly.com> * @since 2014-07-01 * @copyright 2014 Weebly, Inc */ require_once( __DIR__ . '/Bootstrap.php' ); define("MEMORY_LIMIT", 1048576); class Handler { /** * @var $request */ private $request = NULL; /** * @var $site */ private $site = NULL; /** * @var boolean */ private $isRedirect = false; /** * Constructor * On construct, Handler runs through everything needed to either render the requested page, or render a 404 * No methods are called outside of this class, and no values are returned * * @param array $request * * @return void */ public function __construct( $request ) { $this->buildSiteArray( ); $this->buildRequestArray( $request ); /** * Is this an API request to a client API that we need to proxy along? */ if ( $this->isClientApiRequest( ) === true ) { \OriginAPI::makeClientAPIRequest( $this->request, file_get_contents( 'php://input' ) ); } if ( $this->isPage( ) === true ) { /** * Might have the mobile cookie, and just need to get redirected to mobile file on disk * For dynamic mobile page, always let dynamic page handle it. */ if ( $this->request['mobile'] === true && file_exists( \BASE_DOCROOT_DIR . '/mobile/' . $this->request['file'] ) === true ) { \setcookie( 'is_mobile', 1, time( ) + 2592000, '/' ); if ($this->isDynamicPage() === false) { \Output::sendHeader('Location: ' . $this->request['file']); $this->isRedirect = true; $this->finalizeOutput(); exit(); } } /** * Do we have it in the page hierarchy, or is it a dynamic page? Go get it from Origin */ if ($this->isPageInPublishedData( $this->request['file'] ) === true || $this->isDynamicPage( ) === true ) { $this->isDynamicStandardPage(); // update request with isDynamic if needed $response = \OriginRequest::getObject( $this->request ); $this->handleOriginResponse( $response ); } else { \Output::render404( ); } /** * Should we try a simple redirect from .htm to .html? */ if ( $this->isPageInPublishedData( $this->request['file'] . 'l' ) === true ) { if ( file_exists( \BASE_DOCROOT_DIR . '/' . $this->request['file'] ) === true ) { \Output::sendHeader( 'Location: ' . $this->request['file'] . 'l' ); $this->isRedirect = true; $this->finalizeOutput(); exit( ); } else { /** * Don't have it yet, go get it before forwarding */ $this->request['file'] .= 'l'; $this->isDynamicStandardPage(); // update request with isDynamic if needed $response = \OriginRequest::getObject( $this->request ); $this->handleOriginResponse( $response ); } } } else { /** * Not a page, we have to use benefit of the doubt here for checking origin */ // Assets files. // Set default memory_limit so wServer will send back retryRaw message for file larger than 1MB. // Not setting it means it's remote server published before this change, // then wServer will always return old type of response. (no retryRaw mechanism) $this->request['memory_limit'] = MEMORY_LIMIT; $response = \OriginRequest::getObject( $this->request ); $this->handleOriginResponse( $response ); } // if redirect header, then add text to prevent some ftp server's firewall from block pure header redirect. $this->finalizeOutput(); } /** * Builds the site array for the current request * * @return void */ private function buildSiteArray( ) { if ( file_exists( \BASE_SERVICES_DIR . '/' . Configuration::PUBLISHED_DATA_LOCATION ) === true ) { $this->site = json_decode( file_get_contents( \BASE_SERVICES_DIR . '/' . Configuration::PUBLISHED_DATA_LOCATION ), true ); } } /** * Builds the request data array for the current request * During one of the build cases, we may redirect out to the properly formed .html location * * @param array $request * * @return void */ private function buildRequestArray( $request ) { // Better detection of HTTPS if (isset($_SERVER['HTTPS']) && ($_SERVER['HTTPS'] === 'on' || $_SERVER['HTTPS'] == '1')) { $_SERVER['REQUEST_SCHEME'] = 'https'; } elseif (!isset($_SERVER['REQUEST_SCHEME'])) { $_SERVER['REQUEST_SCHEME'] = 'http'; } $this->request = parse_url( $_SERVER['REQUEST_SCHEME'] . '://' . $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI'] ); // Always trim the trailing slash. $this->request['path'] = rtrim($this->request['path'], '/'); $this->request['directories'] = explode('/', trim( $this->request['path'], '/' )); $this->request['headers'] = self::getHeaders( ); $this->request['method'] = $_SERVER['REQUEST_METHOD']; if ( count( $this->request['directories'] ) > 1 ) { $this->request['file'] = array_pop( $this->request['directories'] ); } else { unset( $this->request['directories'] ); $this->request['file'] = trim($this->request['path'], '/'); } if ( strpos( $this->request['file'], '.' ) === false ) { /** * Is this a redirect to a .html file? */ $file = trim($this->request['path'], '/' ) . '.html'; if ( $this->isPageInPublishedData( $file ) === true ) { \Output::sendHeader( 'Location: /' . $file ); $this->isRedirect = true; $this->finalizeOutput(); exit( ); } if ( $this->request['file'] !== '' ) { $this->request['directories'][] = $this->request['file']; } $this->request['file'] = 'index.html'; if ( $this->request['path'] === '/' ) { $this->request['path'] = $this->request['path'] . $this->request['file']; } } $this->request['ua'] = $_SERVER['HTTP_USER_AGENT']; $this->request['mobile'] = ( ( isset( $_COOKIE['disable_mobile'] ) === false || $_COOKIE['disable_mobile'] === '0' ) && ( isset( $_COOKIE['is_mobile'] ) && $_COOKIE['is_mobile'] !== '0' || isset( $this->request['directories'] ) && $this->request['directories'][0] === 'mobile' ) ); } /** * Handles a response from Origin, generally the last item in the lifecycle of a request * * @param mixed $response * * @return void */ private function handleOriginResponse( $response ) { /** * Origin didn't have the object */ if ( $response === false ) { \Output::render404( ); } /** * We're good to go, start rendering */ \Output::sendHeader( $_SERVER['SERVER_PROTOCOL'] . ' 200 OK' ); /** * Origin had the object, and it's now stored on disk, render the stored object */ if ( $response === true ) { if ( isset( $_COOKIE['is_redirecting'] ) === true ) { sleep( 2 ); } \setcookie( 'is_redirecting', 1, time( ) + 5 ); \Output::sendHeader( 'Location: ' . $this->request['path'] ); $this->isRedirect = true; } if ( is_object( $response ) === true ) { /** * It's a streaming object, so we'll render it from here */ \Output::sendHeader( $_SERVER['SERVER_PROTOCOL'] . ' 200 OK' ); if ($response->type && $response->type === 'js') { \Output::sendHeader('Content-Type: text/javascript;'); } \Output::render( \Output::decodeWireObject( $response->object ) ); } } /** * Determines if the current request is to a page * * @return bool */ private function isPage( ) { /** * The only pages with directories are mobile pages and dynamic pages (commerce & blog) */ if( isset( $this->request['directories'] ) === true && count( $this->request['directories'] ) > 0 && $this->request['directories'] !== 'mobile' && $this->isDynamicPage( ) === false ) { $this->request['isPage'] = false; return false; } if ( preg_match( '/.html\Z/', $this->request['file'] ) > 0 || preg_match( '/.htm\Z/', $this->request['file'] ) > 0 ) { $this->request['isPage'] = true; return true; } $this->request['isPage'] = false; return false; } /** * Uses base directory to determine if the a page is a dynamic page (blog & commerce) * These pages are not always in published data and therefore require directory checking * * @return bool */ private function isDynamicPage() { if ( isset( $this->request['directories'] ) === true && count( $this->request['directories'] ) > 0 ) { /** * Check if either the base directory is a store or a call to a file in the apps folder * or if it is the base directory for a blog (meaning the base directory is also a file in published data) */ if ( $this->isDynamicRoute( $this->request['directories'][0] ) || ( is_numeric( $this->request['directories'][0] ) === true ) ) { return true; } } return false; } /** * Check if a standard page should be considered dynamic, thus not cached. * i.e. Standard page with commerce element, we want to keep commerce data up to date, * So we can't allow odysseus to cache the page, serving outdated commerce data. * * @return bool */ private function isDynamicStandardPage() { if ($this->isDynamicRoute(ltrim($this->request['path'], '/'))) { // page containing commerce element is considered dynamic page here, // so odysseus don't cache it. // so commerce data can stay up to date. // we add a isDynamic in request. // it will tell DeployedServiceController to return in dynamic page's format instead. $this->request['isDynamic'] = true; return true; } return false; } /** * Determines if the first directory in the request is a known "dynamic" endpoint * * @param string $directory * * @return bool */ private function isDynamicRoute( $directory ) { if (starts_with_any($directory, array('store', 'blog', 'apps', 'gdpr'))) { return true; } return (isset($this->site['dynamic']) && isset($this->site['dynamic'][$directory])); } /** * Determines if the current page (by filename) is in the published site data hierarchy * * @param string $page * * @return bool */ private function isPageInPublishedData( $page ) { if ( isset( $page ) === false ) { $page = $this->request['file']; } return in_array( $page, $this->site['pages'] ); } /** * Determines if the current request is a client API related request * * @return bool */ private function isClientApiRequest( ) { if ( strpos( $this->request['path'], '/ajax/' ) === 0 ) { return true; } if (strpos($this->request['path'], '/app/store/api/') === 0) { return true; } return false; } /** * Attempts to retrieve the HTTP headers from the current request * * @return array|bool */ private static function getHeaders( ) { if ( \function_exists( 'apache_request_headers' ) === true ) { return \apache_request_headers( ); } foreach ( $_SERVER as $key => $value ) { if ( substr( $key, 0, 5 ) === 'HTTP_' ) { $headers[str_replace( ' ', '-', ucwords( strtolower( str_replace( '_', ' ', substr( $key, 5 ) ) ) ) )] = $value; } elseif ( $key === 'CONTENT_TYPE' || $key === 'CONTENT_LENGTH' ) { $headers[str_replace( '_', '-', ucwords( strtolower( $key ) ) )] = $value; } } if ( isset( $headers ) === true ) { return $headers; } return false; } /** * Output some content if the page has redirect header. * * This is used to prevent some FTP (i.e. fatcow.com) has firewall not allow empty content redirect header. * */ private function finalizeOutput() { if ($this->isRedirect === true) { // this shouldn't appear, as redirect header would take care of it. // in case it's seen, reload link would help user to manually reload/redirect the page. echo "<a onclick='location.reload()'>click here to reload the page.</a>"; } } } $handler = new Handler( $_REQUEST );
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