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