Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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  1. <?php
  2. /**
  3. * @file index.php
  4. * Friendica
  5. */
  6. /**
  7. * Bootstrap the application
  8. */
  9. use Friendica\App;
  10. use Friendica\BaseObject;
  11. use Friendica\Content\Nav;
  12. use Friendica\Core\Addon;
  13. use Friendica\Core\Config;
  14. use Friendica\Core\L10n;
  15. use Friendica\Core\Session;
  16. use Friendica\Core\System;
  17. use Friendica\Core\Theme;
  18. use Friendica\Core\Worker;
  19. use Friendica\Database\DBM;
  20. use Friendica\Model\Profile;
  21. use Friendica\Module\Login;
  22. require_once 'boot.php';
  23. $a = new App(__DIR__);
  24. BaseObject::setApp($a);
  25. // We assume that the index.php is called by a frontend process
  26. // The value is set to "true" by default in boot.php
  27. $a->backend = false;
  28. /**
  29. * Load the configuration file which contains our DB credentials.
  30. * Ignore errors. If the file doesn't exist or is empty, we are running in
  31. * installation mode.
  32. */
  33. $install = ((file_exists('.htconfig.php') && filesize('.htconfig.php')) ? false : true);
  34. // Only load config if found, don't surpress errors
  35. if (!$install) {
  36. include ".htconfig.php";
  37. }
  38. /**
  39. * Try to open the database;
  40. */
  41. require_once "include/dba.php";
  42. if (!$install) {
  43. dba::connect($db_host, $db_user, $db_pass, $db_data, $install);
  44. unset($db_host, $db_user, $db_pass, $db_data);
  45. /**
  46. * Load configs from db. Overwrite configs from .htconfig.php
  47. */
  48. Config::load();
  49. if ($a->max_processes_reached() || $a->maxload_reached()) {
  50. header($_SERVER["SERVER_PROTOCOL"] . ' 503 Service Temporarily Unavailable');
  51. header('Retry-After: 120');
  52. header('Refresh: 120; url=' . System::baseUrl() . "/" . $a->query_string);
  53. die("System is currently unavailable. Please try again later");
  54. }
  55. if (Config::get('system', 'force_ssl') && ($a->get_scheme() == "http")
  56. && (intval(Config::get('system', 'ssl_policy')) == SSL_POLICY_FULL)
  57. && (substr(System::baseUrl(), 0, 8) == "https://")
  58. ) {
  59. header("HTTP/1.1 302 Moved Temporarily");
  60. header("Location: " . System::baseUrl() . "/" . $a->query_string);
  61. exit();
  62. }
  63. Config::init();
  64. Session::init();
  65. Addon::loadHooks();
  66. Addon::callHooks('init_1');
  67. $maintenance = Config::get('system', 'maintenance');
  68. }
  69. $lang = L10n::getBrowserLanguage();
  70. L10n::loadTranslationTable($lang);
  71. /**
  72. * Important stuff we always need to do.
  73. *
  74. * The order of these may be important so use caution if you think they're all
  75. * intertwingled with no logical order and decide to sort it out. Some of the
  76. * dependencies have changed, but at least at one time in the recent past - the
  77. * order was critical to everything working properly
  78. */
  79. // Exclude the backend processes from the session management
  80. if (!$a->is_backend()) {
  81. $stamp1 = microtime(true);
  82. session_start();
  83. $a->save_timestamp($stamp1, "parser");
  84. } else {
  85. $_SESSION = [];
  86. Worker::executeIfIdle();
  87. }
  88. /**
  89. * Language was set earlier, but we can over-ride it in the session.
  90. * We have to do it here because the session was just now opened.
  91. */
  92. if (x($_SESSION, 'authenticated') && !x($_SESSION, 'language')) {
  93. // we haven't loaded user data yet, but we need user language
  94. $user = dba::selectFirst('user', ['language'], ['uid' => $_SESSION['uid']]);
  95. $_SESSION['language'] = $lang;
  96. if (DBM::is_result($user)) {
  97. $_SESSION['language'] = $user['language'];
  98. }
  99. }
  100. if ((x($_SESSION, 'language')) && ($_SESSION['language'] !== $lang)) {
  101. $lang = $_SESSION['language'];
  102. L10n::loadTranslationTable($lang);
  103. }
  104. if ((x($_GET, 'zrl')) && (!$install && !$maintenance)) {
  105. // Only continue when the given profile link seems valid
  106. // Valid profile links contain a path with "/profile/" and no query parameters
  107. if ((parse_url($_GET['zrl'], PHP_URL_QUERY) == "")
  108. && strstr(parse_url($_GET['zrl'], PHP_URL_PATH), "/profile/")
  109. ) {
  110. $_SESSION['my_url'] = $_GET['zrl'];
  111. $a->query_string = preg_replace('/[\?&]zrl=(.*?)([\?&]|$)/is', '', $a->query_string);
  112. Profile::zrlInit($a);
  113. } else {
  114. // Someone came with an invalid parameter, maybe as a DDoS attempt
  115. // We simply stop processing here
  116. logger("Invalid ZRL parameter ".$_GET['zrl'], LOGGER_DEBUG);
  117. header('HTTP/1.1 403 Forbidden');
  118. echo "<h1>403 Forbidden</h1>";
  119. killme();
  120. }
  121. }
  122. /**
  123. * For Mozilla auth manager - still needs sorting, and this might conflict with LRDD header.
  124. * Apache/PHP lumps the Link: headers into one - and other services might not be able to parse it
  125. * this way. There's a PHP flag to link the headers because by default this will over-write any other
  126. * link header.
  127. *
  128. * What we really need to do is output the raw headers ourselves so we can keep them separate.
  129. */
  130. // header('Link: <' . System::baseUrl() . '/amcd>; rel="acct-mgmt";');
  131. Login::sessionAuth();
  132. if (! x($_SESSION, 'authenticated')) {
  133. header('X-Account-Management-Status: none');
  134. }
  135. /* set up page['htmlhead'] and page['end'] for the modules to use */
  136. $a->page['htmlhead'] = '';
  137. $a->page['end'] = '';
  138. $_SESSION['sysmsg'] = defaults($_SESSION, 'sysmsg' , []);
  139. $_SESSION['sysmsg_info'] = defaults($_SESSION, 'sysmsg_info' , []);
  140. $_SESSION['last_updated'] = defaults($_SESSION, 'last_updated', []);
  141. /*
  142. * check_config() is responsible for running update scripts. These automatically
  143. * update the DB schema whenever we push a new one out. It also checks to see if
  144. * any addons have been added or removed and reacts accordingly.
  145. */
  146. // in install mode, any url loads install module
  147. // but we need "view" module for stylesheet
  148. if ($install && $a->module!="view") {
  149. $a->module = 'install';
  150. } elseif ($maintenance && $a->module!="view") {
  151. $a->module = 'maintenance';
  152. } else {
  153. check_url($a);
  154. check_db(false);
  155. check_addons($a);
  156. }
  157. Nav::setSelected('nothing');
  158. //Don't populate apps_menu if apps are private
  159. $privateapps = Config::get('config', 'private_addons');
  160. if ((local_user()) || (! $privateapps === "1")) {
  161. $arr = ['app_menu' => $a->apps];
  162. Addon::callHooks('app_menu', $arr);
  163. $a->apps = $arr['app_menu'];
  164. }
  165. /**
  166. * We have already parsed the server path into $a->argc and $a->argv
  167. *
  168. * $a->argv[0] is our module name. We will load the file mod/{$a->argv[0]}.php
  169. * and use it for handling our URL request.
  170. * The module file contains a few functions that we call in various circumstances
  171. * and in the following order:
  172. *
  173. * "module"_init
  174. * "module"_post (only called if there are $_POST variables)
  175. * "module"_afterpost
  176. * "module"_content - the string return of this function contains our page body
  177. *
  178. * Modules which emit other serialisations besides HTML (XML,JSON, etc.) should do
  179. * so within the module init and/or post functions and then invoke killme() to terminate
  180. * further processing.
  181. */
  182. if (strlen($a->module)) {
  183. /**
  184. * We will always have a module name.
  185. * First see if we have an addon which is masquerading as a module.
  186. */
  187. // Compatibility with the Android Diaspora client
  188. if ($a->module == "stream") {
  189. $a->module = "network";
  190. }
  191. // Compatibility with the Firefox App
  192. if (($a->module == "users") && ($a->cmd == "users/sign_in")) {
  193. $a->module = "login";
  194. }
  195. $privateapps = Config::get('config', 'private_addons');
  196. if (is_array($a->addons) && in_array($a->module, $a->addons) && file_exists("addon/{$a->module}/{$a->module}.php")) {
  197. //Check if module is an app and if public access to apps is allowed or not
  198. if ((!local_user()) && Addon::isApp($a->module) && $privateapps === "1") {
  199. info(L10n::t("You must be logged in to use addons. "));
  200. } else {
  201. include_once "addon/{$a->module}/{$a->module}.php";
  202. if (function_exists($a->module . '_module')) {
  203. $a->module_loaded = true;
  204. }
  205. }
  206. }
  207. // Controller class routing
  208. if (! $a->module_loaded && class_exists('Friendica\\Module\\' . ucfirst($a->module))) {
  209. $a->module_class = 'Friendica\\Module\\' . ucfirst($a->module);
  210. $a->module_loaded = true;
  211. }
  212. /**
  213. * If not, next look for a 'standard' program module in the 'mod' directory
  214. */
  215. if (! $a->module_loaded && file_exists("mod/{$a->module}.php")) {
  216. include_once "mod/{$a->module}.php";
  217. $a->module_loaded = true;
  218. }
  219. /**
  220. * The URL provided does not resolve to a valid module.
  221. *
  222. * On Dreamhost sites, quite often things go wrong for no apparent reason and they send us to '/internal_error.html'.
  223. * We don't like doing this, but as it occasionally accounts for 10-20% or more of all site traffic -
  224. * 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
  225. * this will often succeed and eventually do the right thing.
  226. *
  227. * Otherwise we are going to emit a 404 not found.
  228. */
  229. if (! $a->module_loaded) {
  230. // Stupid browser tried to pre-fetch our Javascript img template. Don't log the event or return anything - just quietly exit.
  231. if ((x($_SERVER, 'QUERY_STRING')) && preg_match('/{[0-9]}/', $_SERVER['QUERY_STRING']) !== 0) {
  232. killme();
  233. }
  234. if ((x($_SERVER, 'QUERY_STRING')) && ($_SERVER['QUERY_STRING'] === 'q=internal_error.html') && isset($dreamhost_error_hack)) {
  235. logger('index.php: dreamhost_error_hack invoked. Original URI =' . $_SERVER['REQUEST_URI']);
  236. goaway(System::baseUrl() . $_SERVER['REQUEST_URI']);
  237. }
  238. logger('index.php: page not found: ' . $_SERVER['REQUEST_URI'] . ' ADDRESS: ' . $_SERVER['REMOTE_ADDR'] . ' QUERY: ' . $_SERVER['QUERY_STRING'], LOGGER_DEBUG);
  239. header($_SERVER["SERVER_PROTOCOL"] . ' 404 ' . L10n::t('Not Found'));
  240. $tpl = get_markup_template("404.tpl");
  241. $a->page['content'] = replace_macros(
  242. $tpl,
  243. [
  244. '$message' => L10n::t('Page not found.')]
  245. );
  246. }
  247. }
  248. /**
  249. * Load current theme info
  250. */
  251. $theme_info_file = "view/theme/".current_theme()."/theme.php";
  252. if (file_exists($theme_info_file)) {
  253. require_once $theme_info_file;
  254. }
  255. /* initialise content region */
  256. if (! x($a->page, 'content')) {
  257. $a->page['content'] = '';
  258. }
  259. if (!$install && !$maintenance) {
  260. Addon::callHooks('page_content_top', $a->page['content']);
  261. }
  262. /**
  263. * Call module functions
  264. */
  265. if ($a->module_loaded) {
  266. $a->page['page_title'] = $a->module;
  267. $placeholder = '';
  268. if ($a->module_class) {
  269. Addon::callHooks($a->module . '_mod_init', $placeholder);
  270. call_user_func([$a->module_class, 'init']);
  271. } else if (function_exists($a->module . '_init')) {
  272. Addon::callHooks($a->module . '_mod_init', $placeholder);
  273. $func = $a->module . '_init';
  274. $func($a);
  275. }
  276. if (function_exists(str_replace('-', '_', current_theme()) . '_init')) {
  277. $func = str_replace('-', '_', current_theme()) . '_init';
  278. $func($a);
  279. }
  280. if (! $a->error && $_SERVER['REQUEST_METHOD'] === 'POST') {
  281. Addon::callHooks($a->module . '_mod_post', $_POST);
  282. if ($a->module_class) {
  283. call_user_func([$a->module_class, 'post']);
  284. } else if (function_exists($a->module . '_post')) {
  285. $func = $a->module . '_post';
  286. $func($a);
  287. }
  288. }
  289. if (! $a->error) {
  290. Addon::callHooks($a->module . '_mod_afterpost', $placeholder);
  291. if ($a->module_class) {
  292. call_user_func([$a->module_class, 'afterpost']);
  293. } else if (function_exists($a->module . '_afterpost')) {
  294. $func = $a->module . '_afterpost';
  295. $func($a);
  296. }
  297. }
  298. if (! $a->error) {
  299. $arr = ['content' => $a->page['content']];
  300. Addon::callHooks($a->module . '_mod_content', $arr);
  301. $a->page['content'] = $arr['content'];
  302. if ($a->module_class) {
  303. $arr = ['content' => call_user_func([$a->module_class, 'content'])];
  304. } else if (function_exists($a->module . '_content')) {
  305. $func = $a->module . '_content';
  306. $arr = ['content' => $func($a)];
  307. }
  308. Addon::callHooks($a->module . '_mod_aftercontent', $arr);
  309. $a->page['content'] .= $arr['content'];
  310. }
  311. if (function_exists(str_replace('-', '_', current_theme()) . '_content_loaded')) {
  312. $func = str_replace('-', '_', current_theme()) . '_content_loaded';
  313. $func($a);
  314. }
  315. }
  316. /*
  317. * Create the page head after setting the language
  318. * and getting any auth credentials.
  319. *
  320. * Moved init_pagehead() and init_page_end() to after
  321. * all the module functions have executed so that all
  322. * theme choices made by the modules can take effect.
  323. */
  324. $a->init_pagehead();
  325. /*
  326. * Build the page ending -- this is stuff that goes right before
  327. * the closing </body> tag
  328. */
  329. $a->init_page_end();
  330. // If you're just visiting, let javascript take you home
  331. if (x($_SESSION, 'visitor_home')) {
  332. $homebase = $_SESSION['visitor_home'];
  333. } elseif (local_user()) {
  334. $homebase = 'profile/' . $a->user['nickname'];
  335. }
  336. if (isset($homebase)) {
  337. $a->page['content'] .= '<script>var homebase="' . $homebase . '" ; </script>';
  338. }
  339. /*
  340. * now that we've been through the module content, see if the page reported
  341. * a permission problem and if so, a 403 response would seem to be in order.
  342. */
  343. if (stristr(implode("", $_SESSION['sysmsg']), L10n::t('Permission denied'))) {
  344. header($_SERVER["SERVER_PROTOCOL"] . ' 403 ' . L10n::t('Permission denied.'));
  345. }
  346. /*
  347. * Report anything which needs to be communicated in the notification area (before the main body)
  348. */
  349. Addon::callHooks('page_end', $a->page['content']);
  350. /*
  351. * Add the navigation (menu) template
  352. */
  353. if ($a->module != 'install' && $a->module != 'maintenance') {
  354. Nav::build($a);
  355. }
  356. /*
  357. * Add a "toggle mobile" link if we're using a mobile device
  358. */
  359. if ($a->is_mobile || $a->is_tablet) {
  360. if (isset($_SESSION['show-mobile']) && !$_SESSION['show-mobile']) {
  361. $link = 'toggle_mobile?address=' . curPageURL();
  362. } else {
  363. $link = 'toggle_mobile?off=1&address=' . curPageURL();
  364. }
  365. $a->page['footer'] = replace_macros(
  366. get_markup_template("toggle_mobile_footer.tpl"),
  367. [
  368. '$toggle_link' => $link,
  369. '$toggle_text' => L10n::t('toggle mobile')]
  370. );
  371. }
  372. /**
  373. * Build the page - now that we have all the components
  374. */
  375. if (!$a->theme['stylesheet']) {
  376. $stylesheet = current_theme_url();
  377. } else {
  378. $stylesheet = $a->theme['stylesheet'];
  379. }
  380. $a->page['htmlhead'] = str_replace('{{$stylesheet}}', $stylesheet, $a->page['htmlhead']);
  381. //$a->page['htmlhead'] = replace_macros($a->page['htmlhead'], array('$stylesheet' => $stylesheet));
  382. if (isset($_GET["mode"]) && (($_GET["mode"] == "raw") || ($_GET["mode"] == "minimal"))) {
  383. $doc = new DOMDocument();
  384. $target = new DOMDocument();
  385. $target->loadXML("<root></root>");
  386. $content = mb_convert_encoding($a->page["content"], 'HTML-ENTITIES', "UTF-8");
  387. /// @TODO one day, kill those error-surpressing @ stuff, or PHP should ban it
  388. @$doc->loadHTML($content);
  389. $xpath = new DOMXPath($doc);
  390. $list = $xpath->query("//*[contains(@id,'tread-wrapper-')]"); /* */
  391. foreach ($list as $item) {
  392. $item = $target->importNode($item, true);
  393. // And then append it to the target
  394. $target->documentElement->appendChild($item);
  395. }
  396. }
  397. if (isset($_GET["mode"]) && ($_GET["mode"] == "raw")) {
  398. header("Content-type: text/html; charset=utf-8");
  399. echo substr($target->saveHTML(), 6, -8);
  400. killme();
  401. }
  402. $page = $a->page;
  403. $profile = $a->profile;
  404. header("X-Friendica-Version: " . FRIENDICA_VERSION);
  405. header("Content-type: text/html; charset=utf-8");
  406. if (Config::get('system', 'hsts') && (Config::get('system', 'ssl_policy') == SSL_POLICY_FULL)) {
  407. header("Strict-Transport-Security: max-age=31536000");
  408. }
  409. // Some security stuff
  410. header('X-Content-Type-Options: nosniff');
  411. header('X-XSS-Protection: 1; mode=block');
  412. header('X-Permitted-Cross-Domain-Policies: none');
  413. header('X-Frame-Options: sameorigin');
  414. // Things like embedded OSM maps don't work, when this is enabled
  415. // 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'");
  416. /*
  417. * We use $_GET["mode"] for special page templates. So we will check if we have
  418. * to load another page template than the default one.
  419. * The page templates are located in /view/php/ or in the theme directory.
  420. */
  421. if (isset($_GET["mode"])) {
  422. $template = Theme::getPathForFile($_GET["mode"] . '.php');
  423. }
  424. // If there is no page template use the default page template
  425. if (empty($template)) {
  426. $template = Theme::getPathForFile("default.php");
  427. }
  428. /// @TODO Looks unsafe (remote-inclusion), is maybe not but Theme::getPathForFile() uses file_exists() but does not escape anything
  429. require_once $template;
  430. killme();