<?php /** * @file index.php * Friendica */ /** * Bootstrap the application */ use Friendica\App; use Friendica\Content\Nav; use Friendica\Core\Addon; use Friendica\Core\Config; use Friendica\Core\L10n; use Friendica\Core\Session; use Friendica\Core\System; use Friendica\Core\Theme; use Friendica\Core\Worker; use Friendica\Database\DBA; use Friendica\Model\Profile; use Friendica\Module\Login; require_once 'boot.php'; $a = new App(__DIR__); // We assume that the index.php is called by a frontend process // The value is set to "true" by default in boot.php $a->backend = false; /** * Try to open the database; */ require_once "include/dba.php"; // Missing DB connection: ERROR if ($a->mode & App::MODE_LOCALCONFIGPRESENT && !($a->mode & App::MODE_DBAVAILABLE)) { System::httpExit(500, ['title' => 'Error 500 - Internal Server Error', 'description' => 'Apologies but the website is unavailable at the moment.']); } // Max Load Average reached: ERROR if ($a->isMaxProcessesReached() || $a->isMaxLoadReached()) { header('Retry-After: 120'); header('Refresh: 120; url=' . System::baseUrl() . "/" . $a->query_string); System::httpExit(503, ['title' => 'Error 503 - Service Temporarily Unavailable', 'description' => 'System is currently overloaded. Please try again later.']); } if (!$a->isInstallMode()) { if (Config::get('system', 'force_ssl') && ($a->get_scheme() == "http") && (intval(Config::get('system', 'ssl_policy')) == SSL_POLICY_FULL) && (substr(System::baseUrl(), 0, 8) == "https://") && ($_SERVER['REQUEST_METHOD'] == 'GET')) { header("HTTP/1.1 302 Moved Temporarily"); header("Location: " . System::baseUrl() . "/" . $a->query_string); exit(); } Config::init(); Session::init(); Addon::loadHooks(); Addon::callHooks('init_1'); } $lang = L10n::getBrowserLanguage(); L10n::loadTranslationTable($lang); /** * Important stuff we always need to do. * * The order of these may be important so use caution if you think they're all * intertwingled with no logical order and decide to sort it out. Some of the * dependencies have changed, but at least at one time in the recent past - the * order was critical to everything working properly */ // Exclude the backend processes from the session management if (!$a->is_backend()) { $stamp1 = microtime(true); session_start(); $a->save_timestamp($stamp1, "parser"); } else { $_SESSION = []; Worker::executeIfIdle(); } /** * Language was set earlier, but we can over-ride it in the session. * We have to do it here because the session was just now opened. */ if (x($_SESSION, 'authenticated') && !x($_SESSION, 'language')) { $_SESSION['language'] = $lang; // we haven't loaded user data yet, but we need user language if (!empty($_SESSION['uid'])) { $user = DBA::selectFirst('user', ['language'], ['uid' => $_SESSION['uid']]); if (DBA::isResult($user)) { $_SESSION['language'] = $user['language']; } } } if (x($_SESSION, 'language') && ($_SESSION['language'] !== $lang)) { $lang = $_SESSION['language']; L10n::loadTranslationTable($lang); } if (!empty($_GET['zrl']) && $a->mode == App::MODE_NORMAL) { $a->query_string = Profile::stripZrls($a->query_string); if (!local_user()) { // Only continue when the given profile link seems valid // Valid profile links contain a path with "/profile/" and no query parameters if ((parse_url($_GET['zrl'], PHP_URL_QUERY) == "") && strstr(parse_url($_GET['zrl'], PHP_URL_PATH), "/profile/")) { if (defaults($_SESSION, "visitor_home", "") != $_GET["zrl"]) { $_SESSION['my_url'] = $_GET['zrl']; $_SESSION['authenticated'] = 0; } Profile::zrlInit($a); } else { // Someone came with an invalid parameter, maybe as a DDoS attempt // We simply stop processing here logger("Invalid ZRL parameter " . $_GET['zrl'], LOGGER_DEBUG); header('HTTP/1.1 403 Forbidden'); echo "<h1>403 Forbidden</h1>"; killme(); } } } if ((x($_GET,'owt')) && $a->mode == App::MODE_NORMAL) { $token = $_GET['owt']; $a->query_string = Profile::stripQueryParam($a->query_string, 'owt'); Profile::openWebAuthInit($token); } /** * For Mozilla auth manager - still needs sorting, and this might conflict with LRDD header. * Apache/PHP lumps the Link: headers into one - and other services might not be able to parse it * this way. There's a PHP flag to link the headers because by default this will over-write any other * link header. * * What we really need to do is output the raw headers ourselves so we can keep them separate. */ // header('Link: <' . System::baseUrl() . '/amcd>; rel="acct-mgmt";'); Login::sessionAuth(); if (! x($_SESSION, 'authenticated')) { header('X-Account-Management-Status: none'); } /* set up page['htmlhead'] and page['end'] for the modules to use */ $a->page['htmlhead'] = ''; $a->page['end'] = ''; $_SESSION['sysmsg'] = defaults($_SESSION, 'sysmsg' , []); $_SESSION['sysmsg_info'] = defaults($_SESSION, 'sysmsg_info' , []); $_SESSION['last_updated'] = defaults($_SESSION, 'last_updated', []); /* * check_config() is responsible for running update scripts. These automatically * update the DB schema whenever we push a new one out. It also checks to see if * any addons have been added or removed and reacts accordingly. */ // in install mode, any url loads install module // but we need "view" module for stylesheet if ($a->isInstallMode() && $a->module!="view") { $a->module = 'install'; } elseif (!($a->mode & App::MODE_MAINTENANCEDISABLED) && $a->module != "view") { $a->module = 'maintenance'; } else { check_url($a); check_db(false); check_addons($a); } Nav::setSelected('nothing'); //Don't populate apps_menu if apps are private $privateapps = Config::get('config', 'private_addons'); if ((local_user()) || (! $privateapps === "1")) { $arr = ['app_menu' => $a->apps]; Addon::callHooks('app_menu', $arr); $a->apps = $arr['app_menu']; } /** * We have already parsed the server path into $a->argc and $a->argv * * $a->argv[0] is our module name. We will load the file mod/{$a->argv[0]}.php * and use it for handling our URL request. * The module file contains a few functions that we call in various circumstances * and in the following order: * * "module"_init * "module"_post (only called if there are $_POST variables) * "module"_afterpost * "module"_content - the string return of this function contains our page body * * Modules which emit other serialisations besides HTML (XML,JSON, etc.) should do * so within the module init and/or post functions and then invoke killme() to terminate * further processing. */ if (strlen($a->module)) { /** * We will always have a module name. * First see if we have an addon which is masquerading as a module. */ // Compatibility with the Android Diaspora client if ($a->module == 'stream') { goaway('network?f=&order=post'); } if ($a->module == 'conversations') { goaway('message'); } if ($a->module == 'commented') { goaway('network?f=&order=comment'); } if ($a->module == 'liked') { goaway('network?f=&order=comment'); } if ($a->module == 'activity') { goaway('network/?f=&conv=1'); } if (($a->module == 'status_messages') && ($a->cmd == 'status_messages/new')) { goaway('bookmarklet'); } if (($a->module == 'user') && ($a->cmd == 'user/edit')) { goaway('settings'); } if (($a->module == 'tag_followings') && ($a->cmd == 'tag_followings/manage')) { goaway('search'); } // Compatibility with the Firefox App if (($a->module == "users") && ($a->cmd == "users/sign_in")) { $a->module = "login"; } $privateapps = Config::get('config', 'private_addons'); if (is_array($a->addons) && in_array($a->module, $a->addons) && file_exists("addon/{$a->module}/{$a->module}.php")) { //Check if module is an app and if public access to apps is allowed or not if ((!local_user()) && Addon::isApp($a->module) && $privateapps === "1") { info(L10n::t("You must be logged in to use addons. ")); } else { include_once "addon/{$a->module}/{$a->module}.php"; if (function_exists($a->module . '_module')) { $a->module_loaded = true; } } } // Controller class routing if (! $a->module_loaded && class_exists('Friendica\\Module\\' . ucfirst($a->module))) { $a->module_class = 'Friendica\\Module\\' . ucfirst($a->module); $a->module_loaded = true; } /** * If not, next look for a 'standard' program module in the 'mod' directory */ if (! $a->module_loaded && file_exists("mod/{$a->module}.php")) { include_once "mod/{$a->module}.php"; $a->module_loaded = true; } /** * The URL provided does not resolve to a valid module. * * On Dreamhost sites, quite often things go wrong for no apparent reason and they send us to '/internal_error.html'. * We don't like doing this, but as it occasionally accounts for 10-20% or more of all site traffic - * we are going to trap this and redirect back to the requested page. As long as you don't have a critical error on your page * this will often succeed and eventually do the right thing. * * Otherwise we are going to emit a 404 not found. */ if (! $a->module_loaded) { // Stupid browser tried to pre-fetch our Javascript img template. Don't log the event or return anything - just quietly exit. if ((x($_SERVER, 'QUERY_STRING')) && preg_match('/{[0-9]}/', $_SERVER['QUERY_STRING']) !== 0) { killme(); } if ((x($_SERVER, 'QUERY_STRING')) && ($_SERVER['QUERY_STRING'] === 'q=internal_error.html') && isset($dreamhost_error_hack)) { logger('index.php: dreamhost_error_hack invoked. Original URI =' . $_SERVER['REQUEST_URI']); goaway(System::baseUrl() . $_SERVER['REQUEST_URI']); } logger('index.php: page not found: ' . $_SERVER['REQUEST_URI'] . ' ADDRESS: ' . $_SERVER['REMOTE_ADDR'] . ' QUERY: ' . $_SERVER['QUERY_STRING'], LOGGER_DEBUG); header($_SERVER["SERVER_PROTOCOL"] . ' 404 ' . L10n::t('Not Found')); $tpl = get_markup_template("404.tpl"); $a->page['content'] = replace_macros( $tpl, [ '$message' => L10n::t('Page not found.')] ); } } /** * Load current theme info */ $theme_info_file = 'view/theme/' . $a->getCurrentTheme() . '/theme.php'; if (file_exists($theme_info_file)) { require_once $theme_info_file; } /* initialise content region */ if (! x($a->page, 'content')) { $a->page['content'] = ''; } if ($a->mode == App::MODE_NORMAL) { Addon::callHooks('page_content_top', $a->page['content']); } /** * Call module functions */ if ($a->module_loaded) { $a->page['page_title'] = $a->module; $placeholder = ''; if ($a->module_class) { Addon::callHooks($a->module . '_mod_init', $placeholder); call_user_func([$a->module_class, 'init']); } else if (function_exists($a->module . '_init')) { Addon::callHooks($a->module . '_mod_init', $placeholder); $func = $a->module . '_init'; $func($a); } if (function_exists(str_replace('-', '_', $a->getCurrentTheme()) . '_init')) { $func = str_replace('-', '_', $a->getCurrentTheme()) . '_init'; $func($a); } if (! $a->error && $_SERVER['REQUEST_METHOD'] === 'POST') { Addon::callHooks($a->module . '_mod_post', $_POST); if ($a->module_class) { call_user_func([$a->module_class, 'post']); } else if (function_exists($a->module . '_post')) { $func = $a->module . '_post'; $func($a); } } if (! $a->error) { Addon::callHooks($a->module . '_mod_afterpost', $placeholder); if ($a->module_class) { call_user_func([$a->module_class, 'afterpost']); } else if (function_exists($a->module . '_afterpost')) { $func = $a->module . '_afterpost'; $func($a); } } if (! $a->error) { $arr = ['content' => $a->page['content']]; Addon::callHooks($a->module . '_mod_content', $arr); $a->page['content'] = $arr['content']; if ($a->module_class) { $arr = ['content' => call_user_func([$a->module_class, 'content'])]; } else if (function_exists($a->module . '_content')) { $func = $a->module . '_content'; $arr = ['content' => $func($a)]; } Addon::callHooks($a->module . '_mod_aftercontent', $arr); $a->page['content'] .= $arr['content']; } if (function_exists(str_replace('-', '_', $a->getCurrentTheme()) . '_content_loaded')) { $func = str_replace('-', '_', $a->getCurrentTheme()) . '_content_loaded'; $func($a); } } /* * Create the page head after setting the language * and getting any auth credentials. * * Moved init_pagehead() and init_page_end() to after * all the module functions have executed so that all * theme choices made by the modules can take effect. */ $a->init_pagehead(); /* * Build the page ending -- this is stuff that goes right before * the closing </body> tag */ $a->init_page_end(); // If you're just visiting, let javascript take you home if (x($_SESSION, 'visitor_home')) { $homebase = $_SESSION['visitor_home']; } elseif (local_user()) { $homebase = 'profile/' . $a->user['nickname']; } if (isset($homebase)) { $a->page['content'] .= '<script>var homebase="' . $homebase . '" ; </script>'; } /* * now that we've been through the module content, see if the page reported * a permission problem and if so, a 403 response would seem to be in order. */ if (stristr(implode("", $_SESSION['sysmsg']), L10n::t('Permission denied'))) { header($_SERVER["SERVER_PROTOCOL"] . ' 403 ' . L10n::t('Permission denied.')); } /* * Report anything which needs to be communicated in the notification area (before the main body) */ Addon::callHooks('page_end', $a->page['content']); /* * Add the navigation (menu) template */ if ($a->module != 'install' && $a->module != 'maintenance') { Nav::build($a); } /* * Add a "toggle mobile" link if we're using a mobile device */ if ($a->is_mobile || $a->is_tablet) { if (isset($_SESSION['show-mobile']) && !$_SESSION['show-mobile']) { $link = 'toggle_mobile?address=' . curPageURL(); } else { $link = 'toggle_mobile?off=1&address=' . curPageURL(); } $a->page['footer'] = replace_macros( get_markup_template("toggle_mobile_footer.tpl"), [ '$toggle_link' => $link, '$toggle_text' => L10n::t('toggle mobile')] ); } /** * Build the page - now that we have all the components */ if (!$a->theme['stylesheet']) { $stylesheet = $a->getCurrentThemeStylesheetPath(); } else { $stylesheet = $a->theme['stylesheet']; } $a->page['htmlhead'] = str_replace('{{$stylesheet}}', $stylesheet, $a->page['htmlhead']); //$a->page['htmlhead'] = replace_macros($a->page['htmlhead'], array('$stylesheet' => $stylesheet)); if (isset($_GET["mode"]) && (($_GET["mode"] == "raw") || ($_GET["mode"] == "minimal"))) { $doc = new DOMDocument(); $target = new DOMDocument(); $target->loadXML("<root></root>"); $content = mb_convert_encoding($a->page["content"], 'HTML-ENTITIES', "UTF-8"); /// @TODO one day, kill those error-surpressing @ stuff, or PHP should ban it @$doc->loadHTML($content); $xpath = new DOMXPath($doc); $list = $xpath->query("//*[contains(@id,'tread-wrapper-')]"); /* */ foreach ($list as $item) { $item = $target->importNode($item, true); // And then append it to the target $target->documentElement->appendChild($item); } } if (isset($_GET["mode"]) && ($_GET["mode"] == "raw")) { header("Content-type: text/html; charset=utf-8"); echo substr($target->saveHTML(), 6, -8); killme(); } $page = $a->page; $profile = $a->profile; header("X-Friendica-Version: " . FRIENDICA_VERSION); header("Content-type: text/html; charset=utf-8"); if (Config::get('system', 'hsts') && (Config::get('system', 'ssl_policy') == SSL_POLICY_FULL)) { header("Strict-Transport-Security: max-age=31536000"); } // Some security stuff header('X-Content-Type-Options: nosniff'); header('X-XSS-Protection: 1; mode=block'); header('X-Permitted-Cross-Domain-Policies: none'); header('X-Frame-Options: sameorigin'); // Things like embedded OSM maps don't work, when this is enabled // header("Content-Security-Policy: default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; connect-src 'self'; style-src 'self' 'unsafe-inline'; font-src 'self'; img-src 'self' https: data:; media-src 'self' https:; child-src 'self' https:; object-src 'none'"); /* * We use $_GET["mode"] for special page templates. So we will check if we have * to load another page template than the default one. * The page templates are located in /view/php/ or in the theme directory. */ if (isset($_GET["mode"])) { $template = Theme::getPathForFile($_GET["mode"] . '.php'); } // If there is no page template use the default page template if (empty($template)) { $template = Theme::getPathForFile("default.php"); } /// @TODO Looks unsafe (remote-inclusion), is maybe not but Theme::getPathForFile() uses file_exists() but does not escape anything require_once $template; killme();