3 * @copyright Copyright (C) 2010-2022, 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\Logger;
34 use Friendica\Core\Renderer;
35 use Friendica\Core\System;
36 use Friendica\Core\Theme;
37 use Friendica\Module\Response;
38 use Friendica\Network\HTTPException;
39 use Friendica\Util\Network;
40 use Friendica\Util\Strings;
41 use Friendica\Util\Profiler;
42 use Psr\Http\Message\ResponseInterface;
45 * Contains the page specific environment variables for the current Page
46 * - Contains all stylesheets
47 * - Contains all footer-scripts
48 * - Contains all page specific content (header, footer, content, ...)
50 * The run() method is the single point where the page will get printed to the screen
52 class Page implements ArrayAccess
55 * @var array Contains all stylesheets, which should get loaded during page
57 private $stylesheets = [];
59 * @var array Contains all scripts, which are added to the footer at last
61 private $footerScripts = [];
63 * @var array The page content, which are showed directly
78 * @var string The basepath of the page
82 private $timestamp = 0;
83 private $command = '';
87 * @param string $basepath The Page basepath
89 public function __construct(string $basepath)
91 $this->timestamp = microtime(true);
92 $this->basePath = $basepath;
95 public function setLogging(string $command, string $method)
97 $this->command = $command;
98 $this->method = $method;
101 public function logRuntime()
103 $runtime = number_format(microtime(true) - $this->timestamp, 3);
104 Logger::debug('Runtime', ['method' => $this->method, 'command' => $this->command, 'runtime' => $runtime]);
108 * Whether a offset exists
110 * @link https://php.net/manual/en/arrayaccess.offsetexists.php
112 * @param mixed $offset <p>
113 * An offset to check for.
116 * @return boolean true on success or false on failure.
119 * The return value will be casted to boolean if non-boolean was returned.
122 public function offsetExists($offset)
124 return isset($this->page[$offset]);
130 * @link https://php.net/manual/en/arrayaccess.offsetget.php
132 * @param mixed $offset <p>
133 * The offset to retrieve.
136 * @return mixed Can return all value types.
139 public function offsetGet($offset)
141 return $this->page[$offset] ?? null;
147 * @link https://php.net/manual/en/arrayaccess.offsetset.php
149 * @param mixed $offset <p>
150 * The offset to assign the value to.
152 * @param mixed $value <p>
159 public function offsetSet($offset, $value)
161 $this->page[$offset] = $value;
167 * @link https://php.net/manual/en/arrayaccess.offsetunset.php
169 * @param mixed $offset <p>
170 * The offset to unset.
176 public function offsetUnset($offset)
178 if (isset($this->page[$offset])) {
179 unset($this->page[$offset]);
184 * Register a stylesheet file path to be included in the <head> tag of every page.
185 * Inclusion is done in App->initHead().
186 * The path can be absolute or relative to the Friendica installation base folder.
188 * @param string $path
189 * @param string $media
190 * @see Page::initHead()
192 public function registerStylesheet($path, string $media = 'screen')
194 $path = Network::appendQueryParam($path, ['v' => FRIENDICA_VERSION]);
196 if (mb_strpos($path, $this->basePath . DIRECTORY_SEPARATOR) === 0) {
197 $path = mb_substr($path, mb_strlen($this->basePath . DIRECTORY_SEPARATOR));
200 $this->stylesheets[trim($path, '/')] = $media;
204 * Initializes Page->page['htmlhead'].
209 * - Registered stylesheets (through App->registerStylesheet())
210 * - Infinite scroll data
211 * - head.tpl template
213 * @param App $app The Friendica App instance
214 * @param Arguments $args The Friendica App Arguments
215 * @param L10n $l10n The l10n language instance
216 * @param IManageConfigValues $config The Friendica configuration
217 * @param IManagePersonalConfigValues $pConfig The Friendica personal configuration (for user)
219 * @throws HTTPException\InternalServerErrorException
221 private function initHead(App $app, Arguments $args, L10n $l10n, IManageConfigValues $config, IManagePersonalConfigValues $pConfig)
223 $interval = ((local_user()) ? $pConfig->get(local_user(), 'system', 'update_interval') : 40000);
225 // If the update is 'deactivated' set it to the highest integer number (~24 days)
227 $interval = 2147483647;
230 if ($interval < 10000) {
234 // Default title: current module called
235 if (empty($this->page['title']) && $args->getModuleName()) {
236 $this->page['title'] = ucfirst($args->getModuleName());
239 // Prepend the sitename to the page title
240 $this->page['title'] = $config->get('config', 'sitename', '') . (!empty($this->page['title']) ? ' | ' . $this->page['title'] : '');
242 if (!empty(Renderer::$theme['stylesheet'])) {
243 $stylesheet = Renderer::$theme['stylesheet'];
245 $stylesheet = $app->getCurrentThemeStylesheetPath();
248 $this->registerStylesheet($stylesheet);
250 $shortcut_icon = $config->get('system', 'shortcut_icon');
251 if ($shortcut_icon == '') {
252 $shortcut_icon = 'images/friendica.svg';
255 $touch_icon = $config->get('system', 'touch_icon');
256 if ($touch_icon == '') {
257 $touch_icon = 'images/friendica-192.png';
260 Hook::callAll('head', $this->page['htmlhead']);
262 $tpl = Renderer::getMarkupTemplate('head.tpl');
263 /* put the head template at the beginning of page['htmlhead']
264 * since the code added by the modules frequently depends on it
267 $this->page['htmlhead'] = Renderer::replaceMacros($tpl, [
268 '$local_user' => local_user(),
269 '$generator' => 'Friendica' . ' ' . FRIENDICA_VERSION,
270 '$delitem' => $l10n->t('Delete this item?'),
271 '$blockAuthor' => $l10n->t('Block this author? They won\'t be able to follow you nor see your public posts, and you won\'t be able to see their posts and their notifications.'),
272 '$update_interval' => $interval,
273 '$shortcut_icon' => $shortcut_icon,
274 '$touch_icon' => $touch_icon,
275 '$block_public' => intval($config->get('system', 'block_public')),
276 '$stylesheets' => $this->stylesheets,
277 ]) . $this->page['htmlhead'];
281 * Returns the complete URL of the current page, e.g.: http(s)://something.com/network
283 * Taken from http://webcheatsheet.com/php/get_current_page_url.php
285 private function curPageURL()
288 if (!empty($_SERVER["HTTPS"]) && ($_SERVER["HTTPS"] == "on")) {
294 if ($_SERVER["SERVER_PORT"] != "80" && $_SERVER["SERVER_PORT"] != "443") {
295 $pageURL .= $_SERVER["SERVER_NAME"] . ":" . $_SERVER["SERVER_PORT"] . $_SERVER["REQUEST_URI"];
297 $pageURL .= $_SERVER["SERVER_NAME"] . $_SERVER["REQUEST_URI"];
303 * Initializes Page->page['footer'].
306 * - Javascript homebase
307 * - Mobile toggle link
308 * - Registered footer scripts (through App->registerFooterScript())
309 * - footer.tpl template
311 * @param App $app The Friendica App instance
312 * @param Mode $mode The Friendica runtime mode
313 * @param L10n $l10n The l10n instance
315 * @throws HTTPException\InternalServerErrorException
317 private function initFooter(App $app, Mode $mode, L10n $l10n)
319 // If you're just visiting, let javascript take you home
320 if (!empty($_SESSION['visitor_home'])) {
321 $homebase = $_SESSION['visitor_home'];
322 } elseif (!empty($app->getLoggedInUserNickname())) {
323 $homebase = 'profile/' . $app->getLoggedInUserNickname();
326 if (isset($homebase)) {
327 $this->page['footer'] .= '<script>var homebase="' . $homebase . '";</script>' . "\n";
331 * Add a "toggle mobile" link if we're using a mobile device
333 if ($mode->isMobile() || $mode->isTablet()) {
334 if (isset($_SESSION['show-mobile']) && !$_SESSION['show-mobile']) {
335 $link = 'toggle_mobile?address=' . urlencode($this->curPageURL());
337 $link = 'toggle_mobile?off=1&address=' . urlencode($this->curPageURL());
339 $this->page['footer'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate("toggle_mobile_footer.tpl"), [
340 '$toggle_link' => $link,
341 '$toggle_text' => $l10n->t('toggle mobile')
345 Hook::callAll('footer', $this->page['footer']);
347 $tpl = Renderer::getMarkupTemplate('footer.tpl');
348 $this->page['footer'] = Renderer::replaceMacros($tpl, [
349 '$footerScripts' => array_unique($this->footerScripts),
350 ]) . $this->page['footer'];
354 * Initializes Page->page['content'].
358 * - hooks for content
360 * @param ResponseInterface $response The Module response class
361 * @param Mode $mode The Friendica execution mode
363 * @throws HTTPException\InternalServerErrorException
365 private function initContent(ResponseInterface $response, Mode $mode)
367 // initialise content region
368 if ($mode->isNormal()) {
369 Hook::callAll('page_content_top', $this->page['content']);
372 $this->page['content'] .= (string)$response->getBody();
376 * Register a javascript file path to be included in the <footer> tag of every page.
377 * Inclusion is done in App->initFooter().
378 * The path can be absolute or relative to the Friendica installation base folder.
380 * @param string $path
382 * @see Page::initFooter()
385 public function registerFooterScript($path)
387 $path = Network::appendQueryParam($path, ['v' => FRIENDICA_VERSION]);
389 $url = str_replace($this->basePath . DIRECTORY_SEPARATOR, '', $path);
391 $this->footerScripts[] = trim($url, '/');
395 * Directly exit with the current response (include setting all headers)
397 * @param ResponseInterface $response
399 public function exit(ResponseInterface $response)
401 header(sprintf("HTTP/%s %s %s",
402 $response->getProtocolVersion(),
403 $response->getStatusCode(),
404 $response->getReasonPhrase())
407 foreach ($response->getHeaders() as $key => $header) {
408 if (is_array($header)) {
409 $header_str = implode(',', $header);
411 $header_str = $header;
417 header("$key: $header_str");
421 echo $response->getBody();
426 * Executes the creation of the current page and prints it to the screen
428 * @param App $app The Friendica App
429 * @param BaseURL $baseURL The Friendica Base URL
430 * @param Arguments $args The Friendica App arguments
431 * @param Mode $mode The current node mode
432 * @param ResponseInterface $response The Response of the module class, including type, content & headers
433 * @param L10n $l10n The l10n language class
434 * @param IManageConfigValues $config The Configuration of this node
435 * @param IManagePersonalConfigValues $pconfig The personal/user configuration
437 * @throws HTTPException\InternalServerErrorException|HTTPException\ServiceUnavailableException
439 public function run(App $app, BaseURL $baseURL, Arguments $args, Mode $mode, ResponseInterface $response, L10n $l10n, Profiler $profiler, IManageConfigValues $config, IManagePersonalConfigValues $pconfig)
441 $moduleName = $args->getModuleName();
443 $this->command = $moduleName;
444 $this->method = $args->getMethod();
446 /* Create the page content.
447 * Calls all hooks which are including content operations
449 * Sets the $Page->page['content'] variable
451 $timestamp = microtime(true);
452 $this->initContent($response, $mode);
454 // Load current theme info after module has been initialized as theme could have been set in module
455 $currentTheme = $app->getCurrentTheme();
456 $theme_info_file = 'view/theme/' . $currentTheme . '/theme.php';
457 if (file_exists($theme_info_file)) {
458 require_once $theme_info_file;
461 if (function_exists(str_replace('-', '_', $currentTheme) . '_init')) {
462 $func = str_replace('-', '_', $currentTheme) . '_init';
466 /* Create the page head after setting the language
467 * and getting any auth credentials.
469 * Moved initHead() and initFooter() to after
470 * all the module functions have executed so that all
471 * theme choices made by the modules can take effect.
473 $this->initHead($app, $args, $l10n, $config, $pconfig);
475 /* Build the page ending -- this is stuff that goes right before
476 * the closing </body> tag
478 $this->initFooter($app, $mode, $l10n);
480 $profiler->set(microtime(true) - $timestamp, 'aftermath');
482 if (!$mode->isAjax()) {
483 Hook::callAll('page_end', $this->page['content']);
486 // Add the navigation (menu) template
487 if ($moduleName != 'install' && $moduleName != 'maintenance') {
488 $this->page['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('nav_head.tpl'), []);
489 $this->page['nav'] = Nav::build($app);
492 foreach ($response->getHeaders() as $key => $header) {
493 if (is_array($header)) {
494 $header_str = implode(',', $header);
496 $header_str = $header;
502 header("$key: $header_str");
506 // Build the page - now that we have all the components
507 if (isset($_GET["mode"]) && (($_GET["mode"] == "raw") || ($_GET["mode"] == "minimal"))) {
508 $doc = new DOMDocument();
510 $target = new DOMDocument();
511 $target->loadXML("<root></root>");
513 $content = mb_convert_encoding($this->page["content"], 'HTML-ENTITIES', "UTF-8");
515 /// @TODO one day, kill those error-surpressing @ stuff, or PHP should ban it
516 @$doc->loadHTML($content);
518 $xpath = new DOMXPath($doc);
520 $list = $xpath->query("//*[contains(@id,'tread-wrapper-')]"); /* */
522 foreach ($list as $item) {
523 $item = $target->importNode($item, true);
525 // And then append it to the target
526 $target->documentElement->appendChild($item);
529 if ($_GET["mode"] == "raw") {
530 System::httpExit(substr($target->saveHTML(), 6, -8), Response::TYPE_HTML);
536 header("X-Friendica-Version: " . FRIENDICA_VERSION);
537 header("Content-type: text/html; charset=utf-8");
539 if ($config->get('system', 'hsts') && ($baseURL->getSSLPolicy() == BaseURL::SSL_POLICY_FULL)) {
540 header("Strict-Transport-Security: max-age=31536000");
543 // Some security stuff
544 header('X-Content-Type-Options: nosniff');
545 header('X-XSS-Protection: 1; mode=block');
546 header('X-Permitted-Cross-Domain-Policies: none');
547 header('X-Frame-Options: sameorigin');
549 // Things like embedded OSM maps don't work, when this is enabled
550 // 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'");
552 /* We use $_GET["mode"] for special page templates. So we will check if we have
553 * to load another page template than the default one.
554 * The page templates are located in /view/php/ or in the theme directory.
556 if (isset($_GET['mode'])) {
557 $template = Theme::getPathForFile('php/' . Strings::sanitizeFilePathItem($_GET['mode']) . '.php');
560 // If there is no page template use the default page template
561 if (empty($template)) {
562 $template = Theme::getPathForFile('php/default.php');
565 // Theme templates expect $a as an App instance
568 // Used as is in view/php/default.php
569 $lang = $l10n->getCurrentLang();
571 require_once $template;