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