498 lines
14 KiB
PHP
498 lines
14 KiB
PHP
<?php
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/**
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* @copyright Copyright (C) 2020, Friendica
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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namespace Friendica\App;
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use ArrayAccess;
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use DOMDocument;
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use DOMXPath;
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use Friendica\App;
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use Friendica\Content\Nav;
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use Friendica\Core\Config\IConfig;
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use Friendica\Core\PConfig\IPConfig;
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use Friendica\Core\Hook;
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use Friendica\Core\L10n;
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use Friendica\Core\Renderer;
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use Friendica\Core\Theme;
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use Friendica\Module\Special\HTTPException as ModuleHTTPException;
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use Friendica\Network\HTTPException;
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use Friendica\Util\Network;
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use Friendica\Util\Strings;
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/**
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* Contains the page specific environment variables for the current Page
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* - Contains all stylesheets
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* - Contains all footer-scripts
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* - Contains all page specific content (header, footer, content, ...)
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*
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* The run() method is the single point where the page will get printed to the screen
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*/
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class Page implements ArrayAccess
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{
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/**
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* @var array Contains all stylesheets, which should get loaded during page
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*/
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private $stylesheets = [];
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/**
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* @var array Contains all scripts, which are added to the footer at last
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*/
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private $footerScripts = [];
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/**
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* @var array The page content, which are showed directly
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*/
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private $page = [
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'aside' => '',
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'bottom' => '',
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'content' => '',
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'footer' => '',
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'htmlhead' => '',
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'nav' => '',
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'page_title' => '',
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'right_aside' => '',
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'template' => '',
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'title' => '',
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];
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/**
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* @var string The basepath of the page
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*/
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private $basePath;
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/**
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* @param string $basepath The Page basepath
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*/
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public function __construct(string $basepath)
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{
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$this->basePath = $basepath;
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}
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/**
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* Whether a offset exists
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*
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* @link https://php.net/manual/en/arrayaccess.offsetexists.php
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*
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* @param mixed $offset <p>
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* An offset to check for.
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* </p>
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*
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* @return boolean true on success or false on failure.
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* </p>
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* <p>
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* The return value will be casted to boolean if non-boolean was returned.
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* @since 5.0.0
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*/
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public function offsetExists($offset)
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{
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return isset($this->page[$offset]);
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}
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/**
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* Offset to retrieve
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*
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* @link https://php.net/manual/en/arrayaccess.offsetget.php
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*
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* @param mixed $offset <p>
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* The offset to retrieve.
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* </p>
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*
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* @return mixed Can return all value types.
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* @since 5.0.0
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*/
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public function offsetGet($offset)
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{
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return $this->page[$offset] ?? null;
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}
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/**
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* Offset to set
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*
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* @link https://php.net/manual/en/arrayaccess.offsetset.php
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*
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* @param mixed $offset <p>
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* The offset to assign the value to.
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* </p>
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* @param mixed $value <p>
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* The value to set.
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* </p>
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*
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* @return void
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* @since 5.0.0
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*/
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public function offsetSet($offset, $value)
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{
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$this->page[$offset] = $value;
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}
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/**
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* Offset to unset
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*
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* @link https://php.net/manual/en/arrayaccess.offsetunset.php
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*
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* @param mixed $offset <p>
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* The offset to unset.
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* </p>
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*
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* @return void
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* @since 5.0.0
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*/
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public function offsetUnset($offset)
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{
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if (isset($this->page[$offset])) {
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unset($this->page[$offset]);
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}
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}
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/**
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* Register a stylesheet file path to be included in the <head> tag of every page.
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* Inclusion is done in App->initHead().
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* The path can be absolute or relative to the Friendica installation base folder.
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*
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* @param string $path
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*
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* @see Page::initHead()
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*
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*/
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public function registerStylesheet($path)
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{
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$path = Network::appendQueryParam($path, ['v' => FRIENDICA_VERSION]);
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if (mb_strpos($path, $this->basePath . DIRECTORY_SEPARATOR) === 0) {
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$path = mb_substr($path, mb_strlen($this->basePath . DIRECTORY_SEPARATOR));
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}
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$this->stylesheets[] = trim($path, '/');
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}
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/**
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* Initializes Page->page['htmlhead'].
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*
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* Includes:
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* - Page title
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* - Favicons
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* - Registered stylesheets (through App->registerStylesheet())
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* - Infinite scroll data
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* - head.tpl template
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*
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* @param App $app The Friendica App instance
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* @param Module $module The loaded Friendica module
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* @param L10n $l10n The l10n language instance
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* @param IConfig $config The Friendica configuration
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* @param IPConfig $pConfig The Friendica personal configuration (for user)
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*
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* @throws HTTPException\InternalServerErrorException
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*/
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private function initHead(App $app, Module $module, L10n $l10n, IConfig $config, IPConfig $pConfig)
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{
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$interval = ((local_user()) ? $pConfig->get(local_user(), 'system', 'update_interval') : 40000);
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// If the update is 'deactivated' set it to the highest integer number (~24 days)
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if ($interval < 0) {
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$interval = 2147483647;
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}
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if ($interval < 10000) {
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$interval = 40000;
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}
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// Default title: current module called
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if (empty($this->page['title']) && $module->getName()) {
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$this->page['title'] = ucfirst($module->getName());
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}
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// Prepend the sitename to the page title
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$this->page['title'] = $config->get('config', 'sitename', '') . (!empty($this->page['title']) ? ' | ' . $this->page['title'] : '');
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if (!empty(Renderer::$theme['stylesheet'])) {
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$stylesheet = Renderer::$theme['stylesheet'];
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} else {
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$stylesheet = $app->getCurrentThemeStylesheetPath();
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}
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$this->registerStylesheet($stylesheet);
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$shortcut_icon = $config->get('system', 'shortcut_icon');
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if ($shortcut_icon == '') {
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$shortcut_icon = 'images/friendica-32.png';
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}
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$touch_icon = $config->get('system', 'touch_icon');
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if ($touch_icon == '') {
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$touch_icon = 'images/friendica-128.png';
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}
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Hook::callAll('head', $this->page['htmlhead']);
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$tpl = Renderer::getMarkupTemplate('head.tpl');
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/* put the head template at the beginning of page['htmlhead']
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* since the code added by the modules frequently depends on it
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* being first
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*/
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$this->page['htmlhead'] = Renderer::replaceMacros($tpl, [
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'$local_user' => local_user(),
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'$generator' => 'Friendica' . ' ' . FRIENDICA_VERSION,
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'$delitem' => $l10n->t('Delete this item?'),
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'$update_interval' => $interval,
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'$shortcut_icon' => $shortcut_icon,
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'$touch_icon' => $touch_icon,
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'$block_public' => intval($config->get('system', 'block_public')),
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'$stylesheets' => array_unique($this->stylesheets),
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]) . $this->page['htmlhead'];
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}
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/**
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* Initializes Page->page['footer'].
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*
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* Includes:
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* - Javascript homebase
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* - Mobile toggle link
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* - Registered footer scripts (through App->registerFooterScript())
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* - footer.tpl template
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*
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* @param App $app The Friendica App instance
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* @param Mode $mode The Friendica runtime mode
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* @param L10n $l10n The l10n instance
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*
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* @throws HTTPException\InternalServerErrorException
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*/
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private function initFooter(App $app, Mode $mode, L10n $l10n)
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{
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// If you're just visiting, let javascript take you home
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if (!empty($_SESSION['visitor_home'])) {
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$homebase = $_SESSION['visitor_home'];
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} elseif (local_user()) {
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$homebase = 'profile/' . $app->user['nickname'];
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}
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if (isset($homebase)) {
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$this->page['footer'] .= '<script>var homebase="' . $homebase . '";</script>' . "\n";
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}
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/*
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* Add a "toggle mobile" link if we're using a mobile device
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*/
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if ($mode->isMobile() || $mode->isTablet()) {
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if (isset($_SESSION['show-mobile']) && !$_SESSION['show-mobile']) {
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$link = 'toggle_mobile?address=' . urlencode(curPageURL());
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} else {
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$link = 'toggle_mobile?off=1&address=' . urlencode(curPageURL());
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}
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$this->page['footer'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate("toggle_mobile_footer.tpl"), [
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'$toggle_link' => $link,
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'$toggle_text' => $l10n->t('toggle mobile')
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]);
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}
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Hook::callAll('footer', $this->page['footer']);
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$tpl = Renderer::getMarkupTemplate('footer.tpl');
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$this->page['footer'] = Renderer::replaceMacros($tpl, [
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'$footerScripts' => array_unique($this->footerScripts),
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]) . $this->page['footer'];
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}
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/**
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* Initializes Page->page['content'].
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*
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* Includes:
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* - module content
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* - hooks for content
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*
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* @param Module $module The module
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* @param Mode $mode The Friendica execution mode
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*
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* @throws HTTPException\InternalServerErrorException
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*/
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private function initContent(Module $module, Mode $mode)
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{
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$content = '';
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try {
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$moduleClass = $module->getClassName();
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$arr = ['content' => $content];
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Hook::callAll($moduleClass . '_mod_content', $arr);
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$content = $arr['content'];
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$arr = ['content' => call_user_func([$moduleClass, 'content'], $module->getParameters())];
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Hook::callAll($moduleClass . '_mod_aftercontent', $arr);
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$content .= $arr['content'];
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} catch (HTTPException $e) {
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$content = ModuleHTTPException::content($e);
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}
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// initialise content region
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if ($mode->isNormal()) {
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Hook::callAll('page_content_top', $this->page['content']);
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}
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$this->page['content'] .= $content;
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}
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/**
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* Register a javascript file path to be included in the <footer> tag of every page.
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* Inclusion is done in App->initFooter().
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* The path can be absolute or relative to the Friendica installation base folder.
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*
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* @param string $path
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*
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* @see Page::initFooter()
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*
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*/
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public function registerFooterScript($path)
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{
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$path = Network::appendQueryParam($path, ['v' => FRIENDICA_VERSION]);
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$url = str_replace($this->basePath . DIRECTORY_SEPARATOR, '', $path);
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$this->footerScripts[] = trim($url, '/');
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}
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/**
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* Executes the creation of the current page and prints it to the screen
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*
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* @param App $app The Friendica App
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* @param BaseURL $baseURL The Friendica Base URL
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* @param Mode $mode The current node mode
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* @param Module $module The loaded Friendica module
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* @param L10n $l10n The l10n language class
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* @param IConfig $config The Configuration of this node
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* @param IPConfig $pconfig The personal/user configuration
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*
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* @throws HTTPException\InternalServerErrorException
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*/
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public function run(App $app, BaseURL $baseURL, Mode $mode, Module $module, L10n $l10n, IConfig $config, IPConfig $pconfig)
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{
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$moduleName = $module->getName();
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/* Create the page content.
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* Calls all hooks which are including content operations
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*
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* Sets the $Page->page['content'] variable
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*/
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$this->initContent($module, $mode);
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// Load current theme info after module has been initialized as theme could have been set in module
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$currentTheme = $app->getCurrentTheme();
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$theme_info_file = 'view/theme/' . $currentTheme . '/theme.php';
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if (file_exists($theme_info_file)) {
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require_once $theme_info_file;
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}
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if (function_exists(str_replace('-', '_', $currentTheme) . '_init')) {
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$func = str_replace('-', '_', $currentTheme) . '_init';
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$func($app);
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}
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/* Create the page head after setting the language
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* and getting any auth credentials.
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*
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* Moved initHead() and initFooter() to after
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* all the module functions have executed so that all
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* theme choices made by the modules can take effect.
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*/
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$this->initHead($app, $module, $l10n, $config, $pconfig);
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/* Build the page ending -- this is stuff that goes right before
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* the closing </body> tag
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*/
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$this->initFooter($app, $mode, $l10n);
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if (!$mode->isAjax()) {
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Hook::callAll('page_end', $this->page['content']);
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}
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// Add the navigation (menu) template
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if ($moduleName != 'install' && $moduleName != 'maintenance') {
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$this->page['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('nav_head.tpl'), []);
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$this->page['nav'] = Nav::build($app);
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}
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// Build the page - now that we have all the components
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if (isset($_GET["mode"]) && (($_GET["mode"] == "raw") || ($_GET["mode"] == "minimal"))) {
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$doc = new DOMDocument();
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$target = new DOMDocument();
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$target->loadXML("<root></root>");
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$content = mb_convert_encoding($this->page["content"], 'HTML-ENTITIES', "UTF-8");
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/// @TODO one day, kill those error-surpressing @ stuff, or PHP should ban it
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@$doc->loadHTML($content);
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$xpath = new DOMXPath($doc);
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$list = $xpath->query("//*[contains(@id,'tread-wrapper-')]"); /* */
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foreach ($list as $item) {
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$item = $target->importNode($item, true);
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// And then append it to the target
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$target->documentElement->appendChild($item);
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}
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if ($_GET["mode"] == "raw") {
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header("Content-type: text/html; charset=utf-8");
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echo substr($target->saveHTML(), 6, -8);
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exit();
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}
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}
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$page = $this->page;
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$profile = $app->profile;
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header("X-Friendica-Version: " . FRIENDICA_VERSION);
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header("Content-type: text/html; charset=utf-8");
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if ($config->get('system', 'hsts') && ($baseURL->getSSLPolicy() == BaseURL::SSL_POLICY_FULL)) {
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header("Strict-Transport-Security: max-age=31536000");
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}
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// Some security stuff
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header('X-Content-Type-Options: nosniff');
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header('X-XSS-Protection: 1; mode=block');
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header('X-Permitted-Cross-Domain-Policies: none');
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header('X-Frame-Options: sameorigin');
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// Things like embedded OSM maps don't work, when this is enabled
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// 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'");
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/* We use $_GET["mode"] for special page templates. So we will check if we have
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* to load another page template than the default one.
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* The page templates are located in /view/php/ or in the theme directory.
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*/
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if (isset($_GET['mode'])) {
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$template = Theme::getPathForFile('php/' . Strings::sanitizeFilePathItem($_GET['mode']) . '.php');
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}
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// If there is no page template use the default page template
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if (empty($template)) {
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$template = Theme::getPathForFile('php/default.php');
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}
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// Theme templates expect $a as an App instance
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$a = $app;
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// Used as is in view/php/default.php
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$lang = $l10n->getCurrentLang();
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require_once $template;
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}
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}
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