src/App/Page.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2023, the Friendica project
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   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.
  11  *
  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.
  16  *
  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/>.
  19  *
  20  */
  21
  22 namespace Friendica\App;
  23
  24 use ArrayAccess;
  25 use DOMDocument;
  26 use DOMXPath;
  27 use Friendica\App;
  28 use Friendica\Content\Nav;
  29 use Friendica\Core\Config\Capability\IManageConfigValues;
  30 use Friendica\Core\Hook;
  31 use Friendica\Core\L10n;
  32 use Friendica\Core\Logger;
  33 use Friendica\Core\PConfig\Capability\IManagePersonalConfigValues;
  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\Profiler;
  41 use Friendica\Util\Strings;
  42 use Psr\Http\Message\ResponseInterface;
  43
  44 /**
  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, ...)
  49  *
  50  * The run() method is the single point where the page will get printed to the screen
  51  */
  52 class Page implements ArrayAccess
  53 {
  54         /**
  55          * @var array Contains all stylesheets, which should get loaded during page
  56          */
  57         private $stylesheets = [];
  58         /**
  59          * @var array Contains all scripts, which are added to the footer at last
  60          */
  61         private $footerScripts = [];
  62         /**
  63          * @var array The page content, which are showed directly
  64          */
  65         private $page = [
  66                 'aside'       => '',
  67                 'bottom'      => '',
  68                 'content'     => '',
  69                 'footer'      => '',
  70                 'htmlhead'    => '',
  71                 'nav'         => '',
  72                 'page_title'  => '',
  73                 'right_aside' => '',
  74                 'template'    => '',
  75                 'title'       => '',
  76                 'section'     => '',
  77                 'module'      => '',
  78         ];
  79         /**
  80          * @var string The basepath of the page
  81          */
  82         private $basePath;
  83
  84         private $timestamp = 0;
  85         private $method    = '';
  86         private $module    = '';
  87         private $command   = '';
  88
  89         /**
  90          * @param string $basepath The Page basepath
  91          */
  92         public function __construct(string $basepath)
  93         {
  94                 $this->timestamp = microtime(true);
  95                 $this->basePath = $basepath;
  96         }
  97
  98         public function setLogging(string $method, string $module, string $command)
  99         {
 100                 $this->method  = $method;
 101                 $this->module  = $module;
 102                 $this->command = $command;
 103         }
 104
 105         public function logRuntime(IManageConfigValues $config, string $origin = '')
 106         {
 107                 $ignore = $config->get('system', 'runtime_ignore');
 108                 if (in_array($this->module, $ignore) || in_array($this->command, $ignore)) {
 109                         return;
 110                 }
 111
 112                 $signature = !empty($_SERVER['HTTP_SIGNATURE']);
 113                 $load      = number_format(System::currentLoad(), 2);
 114                 $runtime   = number_format(microtime(true) - $this->timestamp, 3);
 115                 if ($runtime > $config->get('system', 'runtime_loglimit')) {
 116                         Logger::debug('Runtime', ['method' => $this->method, 'module' => $this->module, 'runtime' => $runtime, 'load' => $load, 'origin' => $origin, 'signature' => $signature, 'request' => $_SERVER['REQUEST_URI'] ?? '']);
 117                 }
 118         }
 119
 120         // ArrayAccess interface
 121
 122         /**
 123          * @inheritDoc
 124          */
 125         #[\ReturnTypeWillChange]
 126         public function offsetExists($offset): bool
 127         {
 128                 return isset($this->page[$offset]);
 129         }
 130
 131         /**
 132          * @inheritDoc
 133          */
 134         #[\ReturnTypeWillChange]
 135         public function offsetGet($offset)
 136         {
 137                 return $this->page[$offset] ?? null;
 138         }
 139
 140         /**
 141          * @inheritDoc
 142          */
 143         #[\ReturnTypeWillChange]
 144         public function offsetSet($offset, $value): void
 145         {
 146                 $this->page[$offset] = $value;
 147         }
 148
 149         /**
 150          * @inheritDoc
 151          */
 152         #[\ReturnTypeWillChange]
 153         public function offsetUnset($offset): void
 154         {
 155                 if (isset($this->page[$offset])) {
 156                         unset($this->page[$offset]);
 157                 }
 158         }
 159
 160         /**
 161          * Register a stylesheet file path to be included in the <head> tag of every page.
 162          * Inclusion is done in App->initHead().
 163          * The path can be absolute or relative to the Friendica installation base folder.
 164          *
 165          * @param string $path
 166          * @param string $media
 167          * @see Page::initHead()
 168          */
 169         public function registerStylesheet(string $path, string $media = 'screen')
 170         {
 171                 $path = Network::appendQueryParam($path, ['v' => App::VERSION]);
 172
 173                 if (mb_strpos($path, $this->basePath . DIRECTORY_SEPARATOR) === 0) {
 174                         $path = mb_substr($path, mb_strlen($this->basePath . DIRECTORY_SEPARATOR));
 175                 }
 176
 177                 $this->stylesheets[trim($path, '/')] = $media;
 178         }
 179
 180         /**
 181          * Initializes Page->page['htmlhead'].
 182          *
 183          * Includes:
 184          * - Page title
 185          * - Favicons
 186          * - Registered stylesheets (through App->registerStylesheet())
 187          * - Infinite scroll data
 188          * - head.tpl template
 189          *
 190          * @param App                         $app      The Friendica App instance
 191          * @param Arguments                   $args     The Friendica App Arguments
 192          * @param L10n                        $l10n     The l10n language instance
 193          * @param IManageConfigValues         $config   The Friendica configuration
 194          * @param IManagePersonalConfigValues $pConfig  The Friendica personal configuration (for user)
 195          * @param int                         $localUID The local user id
 196          *
 197          * @throws HTTPException\InternalServerErrorException
 198          */
 199         private function initHead(App $app, Arguments $args, L10n $l10n, IManageConfigValues $config, IManagePersonalConfigValues $pConfig, int $localUID)
 200         {
 201                 $interval = ($localUID ? $pConfig->get($localUID, 'system', 'update_interval') : 40000);
 202
 203                 // If the update is 'deactivated' set it to the highest integer number (~24 days)
 204                 if ($interval < 0) {
 205                         $interval = 2147483647;
 206                 }
 207
 208                 if ($interval < 10000) {
 209                         $interval = 40000;
 210                 }
 211
 212                 // Default title: current module called
 213                 if (empty($this->page['title']) && $args->getModuleName()) {
 214                         $this->page['title'] = ucfirst($args->getModuleName());
 215                 }
 216
 217                 // Prepend the sitename to the page title
 218                 $this->page['title'] = $config->get('config', 'sitename', '') . (!empty($this->page['title']) ? ' | ' . $this->page['title'] : '');
 219
 220                 if (!empty(Renderer::$theme['stylesheet'])) {
 221                         $stylesheet = Renderer::$theme['stylesheet'];
 222                 } else {
 223                         $stylesheet = $app->getCurrentThemeStylesheetPath();
 224                 }
 225
 226                 $this->registerStylesheet($stylesheet);
 227
 228                 $shortcut_icon = $config->get('system', 'shortcut_icon');
 229                 if ($shortcut_icon == '') {
 230                         $shortcut_icon = 'images/friendica.svg';
 231                 }
 232
 233                 $touch_icon = $config->get('system', 'touch_icon');
 234                 if ($touch_icon == '') {
 235                         $touch_icon = 'images/friendica-192.png';
 236                 }
 237
 238                 Hook::callAll('head', $this->page['htmlhead']);
 239
 240                 $tpl = Renderer::getMarkupTemplate('head.tpl');
 241                 /* put the head template at the beginning of page['htmlhead']
 242                  * since the code added by the modules frequently depends on it
 243                  * being first
 244                  */
 245                 $this->page['htmlhead'] = Renderer::replaceMacros($tpl, [
 246                         '$local_user'      => $localUID,
 247                         '$generator'       => 'Friendica' . ' ' . App::VERSION,
 248                         '$delitem'         => $l10n->t('Delete this item?'),
 249                         '$blockAuthor'     => $l10n->t('Block this author? They won\'t be able to follow you nor see your public posts, and you won\'t be able to see their posts and their notifications.'),
 250                         '$ignoreAuthor'    => $l10n->t('Ignore this author? You won\'t be able to see their posts and their notifications.'),
 251                         '$update_interval' => $interval,
 252                         '$shortcut_icon'   => $shortcut_icon,
 253                         '$touch_icon'      => $touch_icon,
 254                         '$block_public'    => intval($config->get('system', 'block_public')),
 255                         '$stylesheets'     => $this->stylesheets,
 256                         '$likeError'       => $l10n->t('Like not successfull'),
 257                         '$dislikeError'    => $l10n->t('Dislike not successfull'),
 258                         '$announceError'   => $l10n->t('Sharing not successfull'),
 259                         '$attendError'     => $l10n->t('Attendance unsuccessful'),
 260                         '$srvError'        => $l10n->t('Backend error'),
 261                         '$netError'        => $l10n->t('Network error'),
 262                         // Dropzone
 263                         '$max_imagesize' => round(\Friendica\Util\Strings::getBytesFromShorthand($config->get('system', 'maximagesize')) / 1000000, 1),
 264
 265                 ]) . $this->page['htmlhead'];
 266         }
 267
 268         /**
 269          * Returns the complete URL of the current page, e.g.: http(s)://something.com/network
 270          *
 271          * Taken from http://webcheatsheet.com/php/get_current_page_url.php
 272          */
 273         private function curPageURL(): string
 274         {
 275                 $pageURL = 'http';
 276                 if (!empty($_SERVER["HTTPS"]) && ($_SERVER["HTTPS"] == "on")) {
 277                         $pageURL .= "s";
 278                 }
 279
 280                 $pageURL .= "://";
 281
 282                 if ($_SERVER["SERVER_PORT"] != "80" && $_SERVER["SERVER_PORT"] != "443") {
 283                         $pageURL .= $_SERVER["SERVER_NAME"] . ":" . $_SERVER["SERVER_PORT"] . $_SERVER["REQUEST_URI"];
 284                 } else {
 285                         $pageURL .= $_SERVER["SERVER_NAME"] . $_SERVER["REQUEST_URI"];
 286                 }
 287                 return $pageURL;
 288         }
 289
 290         /**
 291          * Initializes Page->page['footer'].
 292          *
 293          * Includes:
 294          * - JavaScript homebase
 295          * - Mobile toggle link
 296          * - Registered footer scripts (through App->registerFooterScript())
 297          * - footer.tpl template
 298          *
 299          * @param App  $app  The Friendica App instance
 300          * @param Mode $mode The Friendica runtime mode
 301          * @param L10n $l10n The l10n instance
 302          *
 303          * @throws HTTPException\InternalServerErrorException
 304          */
 305         private function initFooter(App $app, Mode $mode, L10n $l10n)
 306         {
 307                 // If you're just visiting, let javascript take you home
 308                 if (!empty($_SESSION['visitor_home'])) {
 309                         $homebase = $_SESSION['visitor_home'];
 310                 } elseif (!empty($app->getLoggedInUserNickname())) {
 311                         $homebase = 'profile/' . $app->getLoggedInUserNickname();
 312                 }
 313
 314                 if (isset($homebase)) {
 315                         $this->page['footer'] .= '<script>var homebase="' . $homebase . '";</script>' . "\n";
 316                 }
 317
 318                 /*
 319                  * Add a "toggle mobile" link if we're using a mobile device
 320                  */
 321                 if ($mode->isMobile() || $mode->isTablet()) {
 322                         if (isset($_SESSION['show-mobile']) && !$_SESSION['show-mobile']) {
 323                                 $link = 'toggle_mobile?address=' . urlencode($this->curPageURL());
 324                         } else {
 325                                 $link = 'toggle_mobile?off=1&address=' . urlencode($this->curPageURL());
 326                         }
 327                         $this->page['footer'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate("toggle_mobile_footer.tpl"), [
 328                                 '$toggle_link' => $link,
 329                                 '$toggle_text' => $l10n->t('toggle mobile')
 330                         ]);
 331                 }
 332
 333                 Hook::callAll('footer', $this->page['footer']);
 334
 335                 $tpl                  = Renderer::getMarkupTemplate('footer.tpl');
 336                 $this->page['footer'] = Renderer::replaceMacros($tpl, [
 337                         '$footerScripts' => array_unique($this->footerScripts),
 338                 ]) . $this->page['footer'];
 339         }
 340
 341         /**
 342          * Initializes Page->page['content'].
 343          *
 344          * Includes:
 345          * - module content
 346          * - hooks for content
 347          *
 348          * @param ResponseInterface  $response The Module response class
 349          * @param Mode               $mode     The Friendica execution mode
 350          *
 351          * @throws HTTPException\InternalServerErrorException
 352          */
 353         private function initContent(ResponseInterface $response, Mode $mode)
 354         {
 355                 // initialise content region
 356                 if ($mode->isNormal()) {
 357                         Hook::callAll('page_content_top', $this->page['content']);
 358                 }
 359
 360                 $this->page['content'] .= (string)$response->getBody();
 361         }
 362
 363         /**
 364          * Register a javascript file path to be included in the <footer> tag of every page.
 365          * Inclusion is done in App->initFooter().
 366          * The path can be absolute or relative to the Friendica installation base folder.
 367          *
 368          * @param string $path
 369          *
 370          * @see Page::initFooter()
 371          *
 372          */
 373         public function registerFooterScript($path)
 374         {
 375                 $path = Network::appendQueryParam($path, ['v' => App::VERSION]);
 376
 377                 $url = str_replace($this->basePath . DIRECTORY_SEPARATOR, '', $path);
 378
 379                 $this->footerScripts[] = trim($url, '/');
 380         }
 381
 382         /**
 383          * Directly exit with the current response (include setting all headers)
 384          *
 385          * @param ResponseInterface $response
 386          */
 387         public function exit(ResponseInterface $response)
 388         {
 389                 header(sprintf("HTTP/%s %s %s",
 390                         $response->getProtocolVersion(),
 391                         $response->getStatusCode(),
 392                         $response->getReasonPhrase())
 393                 );
 394
 395                 foreach ($response->getHeaders() as $key => $header) {
 396                         if (is_array($header)) {
 397                                 $header_str = implode(',', $header);
 398                         } else {
 399                                 $header_str = $header;
 400                         }
 401
 402                         if (empty($key)) {
 403                                 header($header_str);
 404                         } else {
 405                                 header("$key: $header_str");
 406                         }
 407                 }
 408
 409                 echo $response->getBody();
 410         }
 411
 412         /**
 413          * Executes the creation of the current page and prints it to the screen
 414          *
 415          * @param App                         $app      The Friendica App
 416          * @param BaseURL                     $baseURL  The Friendica Base URL
 417          * @param Arguments                   $args     The Friendica App arguments
 418          * @param Mode                        $mode     The current node mode
 419          * @param ResponseInterface           $response The Response of the module class, including type, content & headers
 420          * @param L10n                        $l10n     The l10n language class
 421          * @param Profiler                    $profiler
 422          * @param IManageConfigValues         $config   The Configuration of this node
 423          * @param IManagePersonalConfigValues $pconfig  The personal/user configuration
 424          * @param Nav                         $nav
 425          * @param int                         $localUID
 426          * @throws HTTPException\MethodNotAllowedException
 427          * @throws HTTPException\InternalServerErrorException
 428          * @throws HTTPException\ServiceUnavailableException
 429          */
 430         public function run(App $app, BaseURL $baseURL, Arguments $args, Mode $mode, ResponseInterface $response, L10n $l10n, Profiler $profiler, IManageConfigValues $config, IManagePersonalConfigValues $pconfig, Nav $nav, int $localUID)
 431         {
 432                 $moduleName = $args->getModuleName();
 433
 434                 $this->command = $moduleName;
 435                 $this->method  = $args->getMethod();
 436
 437                 /* Create the page content.
 438                  * Calls all hooks which are including content operations
 439                  *
 440                  * Sets the $Page->page['content'] variable
 441                  */
 442                 $timestamp = microtime(true);
 443                 $this->initContent($response, $mode);
 444
 445                 // Load current theme info after module has been initialized as theme could have been set in module
 446                 $currentTheme = $app->getCurrentTheme();
 447                 $theme_info_file = 'view/theme/' . $currentTheme . '/theme.php';
 448                 if (file_exists($theme_info_file)) {
 449                         require_once $theme_info_file;
 450                 }
 451
 452                 if (function_exists(str_replace('-', '_', $currentTheme) . '_init')) {
 453                         $func = str_replace('-', '_', $currentTheme) . '_init';
 454                         $func($app);
 455                 }
 456
 457                 /* Create the page head after setting the language
 458                  * and getting any auth credentials.
 459                  *
 460                  * Moved initHead() and initFooter() to after
 461                  * all the module functions have executed so that all
 462                  * theme choices made by the modules can take effect.
 463                  */
 464                 $this->initHead($app, $args, $l10n, $config, $pconfig, $localUID);
 465
 466                 /* Build the page ending -- this is stuff that goes right before
 467                  * the closing </body> tag
 468                  */
 469                 $this->initFooter($app, $mode, $l10n);
 470
 471                 $profiler->set(microtime(true) - $timestamp, 'aftermath');
 472
 473                 if (!$mode->isAjax()) {
 474                         Hook::callAll('page_end', $this->page['content']);
 475                 }
 476
 477                 // Add the navigation (menu) template
 478                 if ($moduleName != 'install' && $moduleName != 'maintenance') {
 479                         $this->page['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('nav_head.tpl'), []);
 480                         $this->page['nav']      = $nav->getHtml();
 481                 }
 482
 483                 foreach ($response->getHeaders() as $key => $header) {
 484                         if (is_array($header)) {
 485                                 $header_str = implode(',', $header);
 486                         } else {
 487                                 $header_str = $header;
 488                         }
 489
 490                         if (empty($key)) {
 491                                 header($header_str);
 492                         } else {
 493                                 header("$key: $header_str");
 494                         }
 495                 }
 496
 497                 // Build the page - now that we have all the components
 498                 if (isset($_GET["mode"]) && (($_GET["mode"] == "raw") || ($_GET["mode"] == "minimal"))) {
 499                         $doc = new DOMDocument();
 500
 501                         $target = new DOMDocument();
 502                         $target->loadXML("<root></root>");
 503
 504                         $content = mb_convert_encoding($this->page["content"], 'HTML-ENTITIES', "UTF-8");
 505
 506                         /// @TODO one day, kill those error-surpressing @ stuff, or PHP should ban it
 507                         @$doc->loadHTML($content);
 508
 509                         $xpath = new DOMXPath($doc);
 510
 511                         $list = $xpath->query("//*[contains(@id,'tread-wrapper-')]");  /* */
 512
 513                         foreach ($list as $item) {
 514                                 $item = $target->importNode($item, true);
 515
 516                                 // And then append it to the target
 517                                 $target->documentElement->appendChild($item);
 518                         }
 519
 520                         if ($_GET["mode"] == "raw") {
 521                                 System::httpExit(substr($target->saveHTML(), 6, -8), Response::TYPE_HTML);
 522                         }
 523                 }
 524
 525                 $page    = $this->page;
 526
 527                 // add and escape some common but crucial content for direct "echo" in HTML (security)
 528                 $page['title']   = htmlspecialchars($page['title'] ?? '');
 529                 $page['section'] = htmlspecialchars($args->get(0) ?? 'generic');
 530                 $page['module']  = htmlspecialchars($args->getModuleName() ?? '');
 531
 532                 header("X-Friendica-Version: " . App::VERSION);
 533                 header("Content-type: text/html; charset=utf-8");
 534
 535                 if ($config->get('system', 'hsts') && ($baseURL->getScheme() === 'https')) {
 536                         header("Strict-Transport-Security: max-age=31536000");
 537                 }
 538
 539                 // Some security stuff
 540                 header('X-Content-Type-Options: nosniff');
 541                 header('X-XSS-Protection: 1; mode=block');
 542                 header('X-Permitted-Cross-Domain-Policies: none');
 543                 header('X-Frame-Options: sameorigin');
 544
 545                 // Things like embedded OSM maps don't work, when this is enabled
 546                 // 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'");
 547
 548                 /* We use $_GET["mode"] for special page templates. So we will check if we have
 549                  * to load another page template than the default one.
 550                  * The page templates are located in /view/php/ or in the theme directory.
 551                  */
 552                 if (isset($_GET['mode'])) {
 553                         $template = Theme::getPathForFile('php/' . Strings::sanitizeFilePathItem($_GET['mode']) . '.php');
 554                 }
 555
 556                 // If there is no page template use the default page template
 557                 if (empty($template)) {
 558                         $template = Theme::getPathForFile('php/default.php');
 559                 }
 560
 561                 // Theme templates expect $a as an App instance
 562                 $a = $app;
 563
 564                 // Used as is in view/php/default.php
 565                 $lang = $l10n->getCurrentLang();
 566
 567                 require_once $template;
 568         }
 569 }