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\IConfig;
30 use Friendica\Core\PConfig\IPConfig;
31 use Friendica\Core\Hook;
32 use Friendica\Core\L10n;
33 use Friendica\Core\Renderer;
34 use Friendica\Core\Theme;
35 use Friendica\Module\Special\HTTPException as ModuleHTTPException;
36 use Friendica\Network\HTTPException;
37 use Friendica\Util\Network;
38 use Friendica\Util\Strings;
39 use Friendica\Util\Profiler;
42 * Contains the page specific environment variables for the current Page
43 * - Contains all stylesheets
44 * - Contains all footer-scripts
45 * - Contains all page specific content (header, footer, content, ...)
47 * The run() method is the single point where the page will get printed to the screen
49 class Page implements ArrayAccess
52 * @var array Contains all stylesheets, which should get loaded during page
54 private $stylesheets = [];
56 * @var array Contains all scripts, which are added to the footer at last
58 private $footerScripts = [];
60 * @var array The page content, which are showed directly
75 * @var string The basepath of the page
80 * @param string $basepath The Page basepath
82 public function __construct(string $basepath)
84 $this->basePath = $basepath;
88 * Whether a offset exists
90 * @link https://php.net/manual/en/arrayaccess.offsetexists.php
92 * @param mixed $offset <p>
93 * An offset to check for.
96 * @return boolean true on success or false on failure.
99 * The return value will be casted to boolean if non-boolean was returned.
102 public function offsetExists($offset)
104 return isset($this->page[$offset]);
110 * @link https://php.net/manual/en/arrayaccess.offsetget.php
112 * @param mixed $offset <p>
113 * The offset to retrieve.
116 * @return mixed Can return all value types.
119 public function offsetGet($offset)
121 return $this->page[$offset] ?? null;
127 * @link https://php.net/manual/en/arrayaccess.offsetset.php
129 * @param mixed $offset <p>
130 * The offset to assign the value to.
132 * @param mixed $value <p>
139 public function offsetSet($offset, $value)
141 $this->page[$offset] = $value;
147 * @link https://php.net/manual/en/arrayaccess.offsetunset.php
149 * @param mixed $offset <p>
150 * The offset to unset.
156 public function offsetUnset($offset)
158 if (isset($this->page[$offset])) {
159 unset($this->page[$offset]);
164 * Register a stylesheet file path to be included in the <head> tag of every page.
165 * Inclusion is done in App->initHead().
166 * The path can be absolute or relative to the Friendica installation base folder.
168 * @param string $path
169 * @param string $media
170 * @see Page::initHead()
172 public function registerStylesheet($path, string $media = 'screen')
174 $path = Network::appendQueryParam($path, ['v' => FRIENDICA_VERSION]);
176 if (mb_strpos($path, $this->basePath . DIRECTORY_SEPARATOR) === 0) {
177 $path = mb_substr($path, mb_strlen($this->basePath . DIRECTORY_SEPARATOR));
180 $this->stylesheets[trim($path, '/')] = $media;
184 * Initializes Page->page['htmlhead'].
189 * - Registered stylesheets (through App->registerStylesheet())
190 * - Infinite scroll data
191 * - head.tpl template
193 * @param App $app The Friendica App instance
194 * @param Module $module The loaded Friendica module
195 * @param L10n $l10n The l10n language instance
196 * @param IConfig $config The Friendica configuration
197 * @param IPConfig $pConfig The Friendica personal configuration (for user)
199 * @throws HTTPException\InternalServerErrorException
201 private function initHead(App $app, Module $module, L10n $l10n, IConfig $config, IPConfig $pConfig)
203 $interval = ((local_user()) ? $pConfig->get(local_user(), 'system', 'update_interval') : 40000);
205 // If the update is 'deactivated' set it to the highest integer number (~24 days)
207 $interval = 2147483647;
210 if ($interval < 10000) {
214 // Default title: current module called
215 if (empty($this->page['title']) && $module->getName()) {
216 $this->page['title'] = ucfirst($module->getName());
219 // Prepend the sitename to the page title
220 $this->page['title'] = $config->get('config', 'sitename', '') . (!empty($this->page['title']) ? ' | ' . $this->page['title'] : '');
222 if (!empty(Renderer::$theme['stylesheet'])) {
223 $stylesheet = Renderer::$theme['stylesheet'];
225 $stylesheet = $app->getCurrentThemeStylesheetPath();
228 $this->registerStylesheet($stylesheet);
230 $shortcut_icon = $config->get('system', 'shortcut_icon');
231 if ($shortcut_icon == '') {
232 $shortcut_icon = 'images/friendica-32.png';
235 $touch_icon = $config->get('system', 'touch_icon');
236 if ($touch_icon == '') {
237 $touch_icon = 'images/friendica-192.png';
240 Hook::callAll('head', $this->page['htmlhead']);
242 $tpl = Renderer::getMarkupTemplate('head.tpl');
243 /* put the head template at the beginning of page['htmlhead']
244 * since the code added by the modules frequently depends on it
247 $this->page['htmlhead'] = Renderer::replaceMacros($tpl, [
248 '$local_user' => local_user(),
249 '$generator' => 'Friendica' . ' ' . FRIENDICA_VERSION,
250 '$delitem' => $l10n->t('Delete this item?'),
251 '$blockAuthor' => $l10n->t('Block this author? They won\'t be able to follow you nor see your public posts, and you won\'t be able to see their posts and their notifications.'),
252 '$update_interval' => $interval,
253 '$shortcut_icon' => $shortcut_icon,
254 '$touch_icon' => $touch_icon,
255 '$block_public' => intval($config->get('system', 'block_public')),
256 '$stylesheets' => $this->stylesheets,
257 ]) . $this->page['htmlhead'];
261 * Initializes Page->page['footer'].
264 * - Javascript homebase
265 * - Mobile toggle link
266 * - Registered footer scripts (through App->registerFooterScript())
267 * - footer.tpl template
269 * @param App $app The Friendica App instance
270 * @param Mode $mode The Friendica runtime mode
271 * @param L10n $l10n The l10n instance
273 * @throws HTTPException\InternalServerErrorException
275 private function initFooter(App $app, Mode $mode, L10n $l10n)
277 // If you're just visiting, let javascript take you home
278 if (!empty($_SESSION['visitor_home'])) {
279 $homebase = $_SESSION['visitor_home'];
280 } elseif (!empty($app->user['nickname'])) {
281 $homebase = 'profile/' . $app->user['nickname'];
284 if (isset($homebase)) {
285 $this->page['footer'] .= '<script>var homebase="' . $homebase . '";</script>' . "\n";
289 * Add a "toggle mobile" link if we're using a mobile device
291 if ($mode->isMobile() || $mode->isTablet()) {
292 if (isset($_SESSION['show-mobile']) && !$_SESSION['show-mobile']) {
293 $link = 'toggle_mobile?address=' . urlencode(curPageURL());
295 $link = 'toggle_mobile?off=1&address=' . urlencode(curPageURL());
297 $this->page['footer'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate("toggle_mobile_footer.tpl"), [
298 '$toggle_link' => $link,
299 '$toggle_text' => $l10n->t('toggle mobile')
303 Hook::callAll('footer', $this->page['footer']);
305 $tpl = Renderer::getMarkupTemplate('footer.tpl');
306 $this->page['footer'] = Renderer::replaceMacros($tpl, [
307 '$footerScripts' => array_unique($this->footerScripts),
308 ]) . $this->page['footer'];
312 * Initializes Page->page['content'].
316 * - hooks for content
318 * @param Module $module The module
319 * @param Mode $mode The Friendica execution mode
321 * @throws HTTPException\InternalServerErrorException
323 private function initContent(Module $module, Mode $mode)
328 $moduleClass = $module->getClassName();
330 $arr = ['content' => $content];
331 Hook::callAll($moduleClass . '_mod_content', $arr);
332 $content = $arr['content'];
333 $arr = ['content' => call_user_func([$moduleClass, 'content'], $module->getParameters())];
334 Hook::callAll($moduleClass . '_mod_aftercontent', $arr);
335 $content .= $arr['content'];
336 } catch (HTTPException $e) {
337 $content = ModuleHTTPException::content($e);
340 // initialise content region
341 if ($mode->isNormal()) {
342 Hook::callAll('page_content_top', $this->page['content']);
345 $this->page['content'] .= $content;
349 * Register a javascript file path to be included in the <footer> tag of every page.
350 * Inclusion is done in App->initFooter().
351 * The path can be absolute or relative to the Friendica installation base folder.
353 * @param string $path
355 * @see Page::initFooter()
358 public function registerFooterScript($path)
360 $path = Network::appendQueryParam($path, ['v' => FRIENDICA_VERSION]);
362 $url = str_replace($this->basePath . DIRECTORY_SEPARATOR, '', $path);
364 $this->footerScripts[] = trim($url, '/');
368 * Executes the creation of the current page and prints it to the screen
370 * @param App $app The Friendica App
371 * @param BaseURL $baseURL The Friendica Base URL
372 * @param Mode $mode The current node mode
373 * @param Module $module The loaded Friendica module
374 * @param L10n $l10n The l10n language class
375 * @param IConfig $config The Configuration of this node
376 * @param IPConfig $pconfig The personal/user configuration
378 * @throws HTTPException\InternalServerErrorException
380 public function run(App $app, BaseURL $baseURL, Mode $mode, Module $module, L10n $l10n, Profiler $profiler, IConfig $config, IPConfig $pconfig)
382 $moduleName = $module->getName();
384 /* Create the page content.
385 * Calls all hooks which are including content operations
387 * Sets the $Page->page['content'] variable
389 $timestamp = microtime(true);
390 $this->initContent($module, $mode);
391 $profiler->set(microtime(true) - $timestamp, 'content');
393 // Load current theme info after module has been initialized as theme could have been set in module
394 $currentTheme = $app->getCurrentTheme();
395 $theme_info_file = 'view/theme/' . $currentTheme . '/theme.php';
396 if (file_exists($theme_info_file)) {
397 require_once $theme_info_file;
400 if (function_exists(str_replace('-', '_', $currentTheme) . '_init')) {
401 $func = str_replace('-', '_', $currentTheme) . '_init';
405 /* Create the page head after setting the language
406 * and getting any auth credentials.
408 * Moved initHead() and initFooter() to after
409 * all the module functions have executed so that all
410 * theme choices made by the modules can take effect.
412 $this->initHead($app, $module, $l10n, $config, $pconfig);
414 /* Build the page ending -- this is stuff that goes right before
415 * the closing </body> tag
417 $this->initFooter($app, $mode, $l10n);
419 if (!$mode->isAjax()) {
420 Hook::callAll('page_end', $this->page['content']);
423 // Add the navigation (menu) template
424 if ($moduleName != 'install' && $moduleName != 'maintenance') {
425 $this->page['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('nav_head.tpl'), []);
426 $this->page['nav'] = Nav::build($app);
429 // Build the page - now that we have all the components
430 if (isset($_GET["mode"]) && (($_GET["mode"] == "raw") || ($_GET["mode"] == "minimal"))) {
431 $doc = new DOMDocument();
433 $target = new DOMDocument();
434 $target->loadXML("<root></root>");
436 $content = mb_convert_encoding($this->page["content"], 'HTML-ENTITIES', "UTF-8");
438 /// @TODO one day, kill those error-surpressing @ stuff, or PHP should ban it
439 @$doc->loadHTML($content);
441 $xpath = new DOMXPath($doc);
443 $list = $xpath->query("//*[contains(@id,'tread-wrapper-')]"); /* */
445 foreach ($list as $item) {
446 $item = $target->importNode($item, true);
448 // And then append it to the target
449 $target->documentElement->appendChild($item);
452 if ($_GET["mode"] == "raw") {
453 header("Content-type: text/html; charset=utf-8");
455 echo substr($target->saveHTML(), 6, -8);
462 $profile = $app->profile;
464 header("X-Friendica-Version: " . FRIENDICA_VERSION);
465 header("Content-type: text/html; charset=utf-8");
467 if ($config->get('system', 'hsts') && ($baseURL->getSSLPolicy() == BaseURL::SSL_POLICY_FULL)) {
468 header("Strict-Transport-Security: max-age=31536000");
471 // Some security stuff
472 header('X-Content-Type-Options: nosniff');
473 header('X-XSS-Protection: 1; mode=block');
474 header('X-Permitted-Cross-Domain-Policies: none');
475 header('X-Frame-Options: sameorigin');
477 // Things like embedded OSM maps don't work, when this is enabled
478 // 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'");
480 /* We use $_GET["mode"] for special page templates. So we will check if we have
481 * to load another page template than the default one.
482 * The page templates are located in /view/php/ or in the theme directory.
484 if (isset($_GET['mode'])) {
485 $template = Theme::getPathForFile('php/' . Strings::sanitizeFilePathItem($_GET['mode']) . '.php');
488 // If there is no page template use the default page template
489 if (empty($template)) {
490 $template = Theme::getPathForFile('php/default.php');
493 // Theme templates expect $a as an App instance
496 // Used as is in view/php/default.php
497 $lang = $l10n->getCurrentLang();
499 require_once $template;