3 * @copyright Copyright (C) 2010-2021, the Friendica project
5 * @license GNU AGPL version 3 or any later version
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU Affero General Public License as
9 * published by the Free Software Foundation, either version 3 of the
10 * License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU Affero General Public License for more details.
17 * You should have received a copy of the GNU Affero General Public License
18 * along with this program. If not, see <https://www.gnu.org/licenses/>.
22 namespace Friendica\App;
28 use Friendica\Content\Nav;
29 use Friendica\Core\Config\Capability\IManageConfigValues;
30 use Friendica\Core\PConfig\Capability\IManagePersonalConfigValues;
31 use Friendica\Core\Hook;
32 use Friendica\Core\L10n;
33 use Friendica\Core\Renderer;
34 use Friendica\Core\Theme;
35 use Friendica\Network\HTTPException;
36 use Friendica\Util\Network;
37 use Friendica\Util\Strings;
38 use Friendica\Util\Profiler;
41 * Contains the page specific environment variables for the current Page
42 * - Contains all stylesheets
43 * - Contains all footer-scripts
44 * - Contains all page specific content (header, footer, content, ...)
46 * The run() method is the single point where the page will get printed to the screen
48 class Page implements ArrayAccess
51 * @var array Contains all stylesheets, which should get loaded during page
53 private $stylesheets = [];
55 * @var array Contains all scripts, which are added to the footer at last
57 private $footerScripts = [];
59 * @var array The page content, which are showed directly
74 * @var string The basepath of the page
79 * @param string $basepath The Page basepath
81 public function __construct(string $basepath)
83 $this->basePath = $basepath;
87 * Whether a offset exists
89 * @link https://php.net/manual/en/arrayaccess.offsetexists.php
91 * @param mixed $offset <p>
92 * An offset to check for.
95 * @return boolean true on success or false on failure.
98 * The return value will be casted to boolean if non-boolean was returned.
101 public function offsetExists($offset)
103 return isset($this->page[$offset]);
109 * @link https://php.net/manual/en/arrayaccess.offsetget.php
111 * @param mixed $offset <p>
112 * The offset to retrieve.
115 * @return mixed Can return all value types.
118 public function offsetGet($offset)
120 return $this->page[$offset] ?? null;
126 * @link https://php.net/manual/en/arrayaccess.offsetset.php
128 * @param mixed $offset <p>
129 * The offset to assign the value to.
131 * @param mixed $value <p>
138 public function offsetSet($offset, $value)
140 $this->page[$offset] = $value;
146 * @link https://php.net/manual/en/arrayaccess.offsetunset.php
148 * @param mixed $offset <p>
149 * The offset to unset.
155 public function offsetUnset($offset)
157 if (isset($this->page[$offset])) {
158 unset($this->page[$offset]);
163 * Register a stylesheet file path to be included in the <head> tag of every page.
164 * Inclusion is done in App->initHead().
165 * The path can be absolute or relative to the Friendica installation base folder.
167 * @param string $path
168 * @param string $media
169 * @see Page::initHead()
171 public function registerStylesheet($path, string $media = 'screen')
173 $path = Network::appendQueryParam($path, ['v' => FRIENDICA_VERSION]);
175 if (mb_strpos($path, $this->basePath . DIRECTORY_SEPARATOR) === 0) {
176 $path = mb_substr($path, mb_strlen($this->basePath . DIRECTORY_SEPARATOR));
179 $this->stylesheets[trim($path, '/')] = $media;
183 * Initializes Page->page['htmlhead'].
188 * - Registered stylesheets (through App->registerStylesheet())
189 * - Infinite scroll data
190 * - head.tpl template
192 * @param App $app The Friendica App instance
193 * @param Arguments $args The Friendica App Arguments
194 * @param L10n $l10n The l10n language instance
195 * @param IManageConfigValues $config The Friendica configuration
196 * @param IManagePersonalConfigValues $pConfig The Friendica personal configuration (for user)
198 * @throws HTTPException\InternalServerErrorException
200 private function initHead(App $app, Arguments $args, L10n $l10n, IManageConfigValues $config, IManagePersonalConfigValues $pConfig)
202 $interval = ((local_user()) ? $pConfig->get(local_user(), 'system', 'update_interval') : 40000);
204 // If the update is 'deactivated' set it to the highest integer number (~24 days)
206 $interval = 2147483647;
209 if ($interval < 10000) {
213 // Default title: current module called
214 if (empty($this->page['title']) && $args->getModuleName()) {
215 $this->page['title'] = ucfirst($args->getModuleName());
218 // Prepend the sitename to the page title
219 $this->page['title'] = $config->get('config', 'sitename', '') . (!empty($this->page['title']) ? ' | ' . $this->page['title'] : '');
221 if (!empty(Renderer::$theme['stylesheet'])) {
222 $stylesheet = Renderer::$theme['stylesheet'];
224 $stylesheet = $app->getCurrentThemeStylesheetPath();
227 $this->registerStylesheet($stylesheet);
229 $shortcut_icon = $config->get('system', 'shortcut_icon');
230 if ($shortcut_icon == '') {
231 $shortcut_icon = 'images/friendica-32.png';
234 $touch_icon = $config->get('system', 'touch_icon');
235 if ($touch_icon == '') {
236 $touch_icon = 'images/friendica-192.png';
239 Hook::callAll('head', $this->page['htmlhead']);
241 $tpl = Renderer::getMarkupTemplate('head.tpl');
242 /* put the head template at the beginning of page['htmlhead']
243 * since the code added by the modules frequently depends on it
246 $this->page['htmlhead'] = Renderer::replaceMacros($tpl, [
247 '$local_user' => local_user(),
248 '$generator' => 'Friendica' . ' ' . FRIENDICA_VERSION,
249 '$delitem' => $l10n->t('Delete this item?'),
250 '$blockAuthor' => $l10n->t('Block this author? They won\'t be able to follow you nor see your public posts, and you won\'t be able to see their posts and their notifications.'),
251 '$update_interval' => $interval,
252 '$shortcut_icon' => $shortcut_icon,
253 '$touch_icon' => $touch_icon,
254 '$block_public' => intval($config->get('system', 'block_public')),
255 '$stylesheets' => $this->stylesheets,
256 ]) . $this->page['htmlhead'];
260 * Returns the complete URL of the current page, e.g.: http(s)://something.com/network
262 * Taken from http://webcheatsheet.com/php/get_current_page_url.php
264 private function curPageURL()
267 if (!empty($_SERVER["HTTPS"]) && ($_SERVER["HTTPS"] == "on")) {
273 if ($_SERVER["SERVER_PORT"] != "80" && $_SERVER["SERVER_PORT"] != "443") {
274 $pageURL .= $_SERVER["SERVER_NAME"] . ":" . $_SERVER["SERVER_PORT"] . $_SERVER["REQUEST_URI"];
276 $pageURL .= $_SERVER["SERVER_NAME"] . $_SERVER["REQUEST_URI"];
282 * Initializes Page->page['footer'].
285 * - Javascript homebase
286 * - Mobile toggle link
287 * - Registered footer scripts (through App->registerFooterScript())
288 * - footer.tpl template
290 * @param App $app The Friendica App instance
291 * @param Mode $mode The Friendica runtime mode
292 * @param L10n $l10n The l10n instance
294 * @throws HTTPException\InternalServerErrorException
296 private function initFooter(App $app, Mode $mode, L10n $l10n)
298 // If you're just visiting, let javascript take you home
299 if (!empty($_SESSION['visitor_home'])) {
300 $homebase = $_SESSION['visitor_home'];
301 } elseif (!empty($app->getLoggedInUserNickname())) {
302 $homebase = 'profile/' . $app->getLoggedInUserNickname();
305 if (isset($homebase)) {
306 $this->page['footer'] .= '<script>var homebase="' . $homebase . '";</script>' . "\n";
310 * Add a "toggle mobile" link if we're using a mobile device
312 if ($mode->isMobile() || $mode->isTablet()) {
313 if (isset($_SESSION['show-mobile']) && !$_SESSION['show-mobile']) {
314 $link = 'toggle_mobile?address=' . urlencode($this->curPageURL());
316 $link = 'toggle_mobile?off=1&address=' . urlencode($this->curPageURL());
318 $this->page['footer'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate("toggle_mobile_footer.tpl"), [
319 '$toggle_link' => $link,
320 '$toggle_text' => $l10n->t('toggle mobile')
324 Hook::callAll('footer', $this->page['footer']);
326 $tpl = Renderer::getMarkupTemplate('footer.tpl');
327 $this->page['footer'] = Renderer::replaceMacros($tpl, [
328 '$footerScripts' => array_unique($this->footerScripts),
329 ]) . $this->page['footer'];
333 * Initializes Page->page['content'].
337 * - hooks for content
339 * @param string $content The content to print
340 * @param Mode $mode The Friendica execution mode
342 * @throws HTTPException\InternalServerErrorException
344 private function initContent(string $content, Mode $mode)
346 // initialise content region
347 if ($mode->isNormal()) {
348 Hook::callAll('page_content_top', $this->page['content']);
351 $this->page['content'] .= $content;
355 * Register a javascript file path to be included in the <footer> tag of every page.
356 * Inclusion is done in App->initFooter().
357 * The path can be absolute or relative to the Friendica installation base folder.
359 * @param string $path
361 * @see Page::initFooter()
364 public function registerFooterScript($path)
366 $path = Network::appendQueryParam($path, ['v' => FRIENDICA_VERSION]);
368 $url = str_replace($this->basePath . DIRECTORY_SEPARATOR, '', $path);
370 $this->footerScripts[] = trim($url, '/');
374 * Executes the creation of the current page and prints it to the screen
376 * @param App $app The Friendica App
377 * @param BaseURL $baseURL The Friendica Base URL
378 * @param Arguments $args The Friendica App arguments
379 * @param Mode $mode The current node mode
380 * @param string $content The content to print on frontend
381 * @param L10n $l10n The l10n language class
382 * @param IManageConfigValues $config The Configuration of this node
383 * @param IManagePersonalConfigValues $pconfig The personal/user configuration
385 * @throws HTTPException\InternalServerErrorException|HTTPException\ServiceUnavailableException
387 public function run(App $app, BaseURL $baseURL, Arguments $args, Mode $mode, string $content, L10n $l10n, Profiler $profiler, IManageConfigValues $config, IManagePersonalConfigValues $pconfig)
389 $moduleName = $args->getModuleName();
391 /* Create the page content.
392 * Calls all hooks which are including content operations
394 * Sets the $Page->page['content'] variable
396 $timestamp = microtime(true);
397 $this->initContent($content, $mode);
398 $profiler->set(microtime(true) - $timestamp, 'content');
400 // Load current theme info after module has been initialized as theme could have been set in module
401 $currentTheme = $app->getCurrentTheme();
402 $theme_info_file = 'view/theme/' . $currentTheme . '/theme.php';
403 if (file_exists($theme_info_file)) {
404 require_once $theme_info_file;
407 if (function_exists(str_replace('-', '_', $currentTheme) . '_init')) {
408 $func = str_replace('-', '_', $currentTheme) . '_init';
412 /* Create the page head after setting the language
413 * and getting any auth credentials.
415 * Moved initHead() and initFooter() to after
416 * all the module functions have executed so that all
417 * theme choices made by the modules can take effect.
419 $this->initHead($app, $args, $l10n, $config, $pconfig);
421 /* Build the page ending -- this is stuff that goes right before
422 * the closing </body> tag
424 $this->initFooter($app, $mode, $l10n);
426 if (!$mode->isAjax()) {
427 Hook::callAll('page_end', $this->page['content']);
430 // Add the navigation (menu) template
431 if ($moduleName != 'install' && $moduleName != 'maintenance') {
432 $this->page['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('nav_head.tpl'), []);
433 $this->page['nav'] = Nav::build($app);
436 // Build the page - now that we have all the components
437 if (isset($_GET["mode"]) && (($_GET["mode"] == "raw") || ($_GET["mode"] == "minimal"))) {
438 $doc = new DOMDocument();
440 $target = new DOMDocument();
441 $target->loadXML("<root></root>");
443 $content = mb_convert_encoding($this->page["content"], 'HTML-ENTITIES', "UTF-8");
445 /// @TODO one day, kill those error-surpressing @ stuff, or PHP should ban it
446 @$doc->loadHTML($content);
448 $xpath = new DOMXPath($doc);
450 $list = $xpath->query("//*[contains(@id,'tread-wrapper-')]"); /* */
452 foreach ($list as $item) {
453 $item = $target->importNode($item, true);
455 // And then append it to the target
456 $target->documentElement->appendChild($item);
459 if ($_GET["mode"] == "raw") {
460 header("Content-type: text/html; charset=utf-8");
462 echo substr($target->saveHTML(), 6, -8);
470 header("X-Friendica-Version: " . FRIENDICA_VERSION);
471 header("Content-type: text/html; charset=utf-8");
473 if ($config->get('system', 'hsts') && ($baseURL->getSSLPolicy() == BaseURL::SSL_POLICY_FULL)) {
474 header("Strict-Transport-Security: max-age=31536000");
477 // Some security stuff
478 header('X-Content-Type-Options: nosniff');
479 header('X-XSS-Protection: 1; mode=block');
480 header('X-Permitted-Cross-Domain-Policies: none');
481 header('X-Frame-Options: sameorigin');
483 // Things like embedded OSM maps don't work, when this is enabled
484 // 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'");
486 /* We use $_GET["mode"] for special page templates. So we will check if we have
487 * to load another page template than the default one.
488 * The page templates are located in /view/php/ or in the theme directory.
490 if (isset($_GET['mode'])) {
491 $template = Theme::getPathForFile('php/' . Strings::sanitizeFilePathItem($_GET['mode']) . '.php');
494 // If there is no page template use the default page template
495 if (empty($template)) {
496 $template = Theme::getPathForFile('php/default.php');
499 // Theme templates expect $a as an App instance
502 // Used as is in view/php/default.php
503 $lang = $l10n->getCurrentLang();
505 require_once $template;