src/App.php

   1 <?php
   2 /**
   3  * @file src/App.php
   4  */
   5 namespace Friendica;
   6
   7 use Exception;
   8 use Friendica\App\Arguments;
   9 use Friendica\App\BaseURL;
  10 use Friendica\App\Page;
  11 use Friendica\App\Authentication;
  12 use Friendica\Core\Config\Cache\ConfigCache;
  13 use Friendica\Core\Config\Configuration;
  14 use Friendica\Core\Config\PConfiguration;
  15 use Friendica\Core\L10n\L10n;
  16 use Friendica\Core\System;
  17 use Friendica\Core\Theme;
  18 use Friendica\Database\Database;
  19 use Friendica\Model\Profile;
  20 use Friendica\Module\Special\HTTPException as ModuleHTTPException;
  21 use Friendica\Network\HTTPException;
  22 use Friendica\Util\ConfigFileLoader;
  23 use Friendica\Util\HTTPSignature;
  24 use Friendica\Util\Profiler;
  25 use Friendica\Util\Strings;
  26 use Psr\Log\LoggerInterface;
  27
  28 /**
  29  *
  30  * class: App
  31  *
  32  * @brief Our main application structure for the life of this page.
  33  *
  34  * Primarily deals with the URL that got us here
  35  * and tries to make some sense of it, and
  36  * stores our page contents and config storage
  37  * and anything else that might need to be passed around
  38  * before we spit the page out.
  39  *
  40  */
  41 class App
  42 {
  43         /** @deprecated 2019.09 - use App\Arguments->getQueryString() */
  44         public $query_string;
  45         /**
  46          * @var Page The current page environment
  47          */
  48         public $page;
  49         public $profile;
  50         public $profile_uid;
  51         public $user;
  52         public $cid;
  53         public $contact;
  54         public $contacts;
  55         public $page_contact;
  56         public $content;
  57         public $data = [];
  58         /** @deprecated 2019.09 - use App\Arguments->getCommand() */
  59         public $cmd = '';
  60         /** @deprecated 2019.09 - use App\Arguments->getArgv() or Arguments->get() */
  61         public $argv;
  62         /** @deprecated 2019.09 - use App\Arguments->getArgc() */
  63         public $argc;
  64         /** @deprecated 2019.09 - Use App\Module->getName() instead */
  65         public $module;
  66         public $timezone;
  67         public $interactive = true;
  68         public $identities;
  69         /** @deprecated 2019.09 - Use App\Mode->isMobile() instead */
  70         public $is_mobile;
  71         /** @deprecated 2019.09 - Use App\Mode->isTable() instead */
  72         public $is_tablet;
  73         public $theme_info = [];
  74         public $category;
  75         // Allow themes to control internal parameters
  76         // by changing App values in theme.php
  77
  78         public $sourcename              = '';
  79         public $videowidth              = 425;
  80         public $videoheight             = 350;
  81         public $force_max_items         = 0;
  82         public $theme_events_in_profile = true;
  83         public $queue;
  84
  85         /**
  86          * @var App\Mode The Mode of the Application
  87          */
  88         private $mode;
  89
  90         /**
  91          * @var BaseURL
  92          */
  93         private $baseURL;
  94
  95         /** @var string The name of the current theme */
  96         private $currentTheme;
  97         /** @var string The name of the current mobile theme */
  98         private $currentMobileTheme;
  99
 100         /**
 101          * @var Configuration The config
 102          */
 103         private $config;
 104
 105         /**
 106          * @var LoggerInterface The logger
 107          */
 108         private $logger;
 109
 110         /**
 111          * @var Profiler The profiler of this app
 112          */
 113         private $profiler;
 114
 115         /**
 116          * @var Database The Friendica database connection
 117          */
 118         private $database;
 119
 120         /**
 121          * @var L10n The translator
 122          */
 123         private $l10n;
 124
 125         /**
 126          * @var App\Arguments
 127          */
 128         private $args;
 129
 130         /**
 131          * @var Core\Process The process methods
 132          */
 133         private $process;
 134
 135         /**
 136          * Returns the current config cache of this node
 137          *
 138          * @return ConfigCache
 139          */
 140         public function getConfigCache()
 141         {
 142                 return $this->config->getCache();
 143         }
 144
 145         /**
 146          * The basepath of this app
 147          *
 148          * @return string
 149          */
 150         public function getBasePath()
 151         {
 152                 // Don't use the basepath of the config table for basepath (it should always be the config-file one)
 153                 return $this->config->getCache()->get('system', 'basepath');
 154         }
 155
 156         /**
 157          * @deprecated 2019.09 - use Page->registerStylesheet instead
 158          * @see        Page::registerStylesheet()
 159          */
 160         public function registerStylesheet($path)
 161         {
 162                 $this->page->registerStylesheet($path);
 163         }
 164
 165         /**
 166          * @deprecated 2019.09 - use Page->registerFooterScript instead
 167          * @see        Page::registerFooterScript()
 168          */
 169         public function registerFooterScript($path)
 170         {
 171                 $this->page->registerFooterScript($path);
 172         }
 173
 174         /**
 175          * @param Database        $database The Friendica Database
 176          * @param Configuration   $config   The Configuration
 177          * @param App\Mode        $mode     The mode of this Friendica app
 178          * @param BaseURL         $baseURL  The full base URL of this Friendica app
 179          * @param LoggerInterface $logger   The current app logger
 180          * @param Profiler        $profiler The profiler of this application
 181          * @param L10n            $l10n     The translator instance
 182          * @param App\Arguments   $args     The Friendica Arguments of the call
 183          * @param Core\Process    $process  The process methods
 184          */
 185         public function __construct(Database $database, Configuration $config, App\Mode $mode, BaseURL $baseURL, LoggerInterface $logger, Profiler $profiler, L10n $l10n, Arguments $args, App\Module $module, App\Page $page, Core\Process $process)
 186         {
 187                 $this->database = $database;
 188                 $this->config   = $config;
 189                 $this->mode     = $mode;
 190                 $this->baseURL  = $baseURL;
 191                 $this->profiler = $profiler;
 192                 $this->logger   = $logger;
 193                 $this->l10n     = $l10n;
 194                 $this->args     = $args;
 195                 $this->process  = $process;
 196
 197                 $this->cmd          = $args->getCommand();
 198                 $this->argv         = $args->getArgv();
 199                 $this->argc         = $args->getArgc();
 200                 $this->query_string = $args->getQueryString();
 201                 $this->module       = $module->getName();
 202                 $this->page         = $page;
 203
 204                 $this->is_mobile = $mode->isMobile();
 205                 $this->is_tablet = $mode->isTablet();
 206
 207                 $this->load();
 208         }
 209
 210         /**
 211          * Load the whole app instance
 212          */
 213         public function load()
 214         {
 215                 set_time_limit(0);
 216
 217                 // This has to be quite large to deal with embedded private photos
 218                 ini_set('pcre.backtrack_limit', 500000);
 219
 220                 set_include_path(
 221                         get_include_path() . PATH_SEPARATOR
 222                         . $this->getBasePath() . DIRECTORY_SEPARATOR . 'include' . PATH_SEPARATOR
 223                         . $this->getBasePath() . DIRECTORY_SEPARATOR . 'library' . PATH_SEPARATOR
 224                         . $this->getBasePath());
 225
 226                 $this->profiler->reset();
 227
 228                 if ($this->mode->has(App\Mode::DBAVAILABLE)) {
 229                         $this->profiler->update($this->config);
 230
 231                         Core\Hook::loadHooks();
 232                         $loader = new ConfigFileLoader($this->getBasePath());
 233                         Core\Hook::callAll('load_config', $loader);
 234                 }
 235
 236                 $this->loadDefaultTimezone();
 237                 // Register template engines
 238                 Core\Renderer::registerTemplateEngine('Friendica\Render\FriendicaSmartyEngine');
 239         }
 240
 241         /**
 242          * Loads the default timezone
 243          *
 244          * Include support for legacy $default_timezone
 245          *
 246          * @global string $default_timezone
 247          */
 248         private function loadDefaultTimezone()
 249         {
 250                 if ($this->config->get('system', 'default_timezone')) {
 251                         $this->timezone = $this->config->get('system', 'default_timezone');
 252                 } else {
 253                         global $default_timezone;
 254                         $this->timezone = !empty($default_timezone) ? $default_timezone : 'UTC';
 255                 }
 256
 257                 if ($this->timezone) {
 258                         date_default_timezone_set($this->timezone);
 259                 }
 260         }
 261
 262         /**
 263          * Returns the scheme of the current call
 264          *
 265          * @return string
 266          *
 267          * @deprecated 2019.06 - use BaseURL->getScheme() instead
 268          */
 269         public function getScheme()
 270         {
 271                 return $this->baseURL->getScheme();
 272         }
 273
 274         /**
 275          * Retrieves the Friendica instance base URL
 276          *
 277          * @param bool $ssl Whether to append http or https under BaseURL::SSL_POLICY_SELFSIGN
 278          *
 279          * @return string Friendica server base URL
 280          *
 281          * @deprecated 2019.09 - use BaseUrl->get($ssl) instead
 282          */
 283         public function getBaseURL($ssl = false)
 284         {
 285                 return $this->baseURL->get($ssl);
 286         }
 287
 288         /**
 289          * Returns the current UserAgent as a String
 290          *
 291          * @return string the UserAgent as a String
 292          * @throws HTTPException\InternalServerErrorException
 293          */
 294         public function getUserAgent()
 295         {
 296                 return
 297                         FRIENDICA_PLATFORM . " '" .
 298                         FRIENDICA_CODENAME . "' " .
 299                         FRIENDICA_VERSION . '-' .
 300                         DB_UPDATE_VERSION . '; ' .
 301                         $this->getBaseURL();
 302         }
 303
 304         /**
 305          * Generates the site's default sender email address
 306          *
 307          * @return string
 308          * @throws HTTPException\InternalServerErrorException
 309          */
 310         public function getSenderEmailAddress()
 311         {
 312                 $sender_email = $this->config->get('config', 'sender_email');
 313                 if (empty($sender_email)) {
 314                         $hostname = $this->baseURL->getHostname();
 315                         if (strpos($hostname, ':')) {
 316                                 $hostname = substr($hostname, 0, strpos($hostname, ':'));
 317                         }
 318
 319                         $sender_email = 'noreply@' . $hostname;
 320                 }
 321
 322                 return $sender_email;
 323         }
 324
 325         /**
 326          * Returns the current theme name. May be overriden by the mobile theme name.
 327          *
 328          * @return string
 329          * @throws Exception
 330          */
 331         public function getCurrentTheme()
 332         {
 333                 if ($this->mode->isInstall()) {
 334                         return '';
 335                 }
 336
 337                 // Specific mobile theme override
 338                 if (($this->mode->isMobile() || $this->mode->isTablet()) && Core\Session::get('show-mobile', true)) {
 339                         $user_mobile_theme = $this->getCurrentMobileTheme();
 340
 341                         // --- means same mobile theme as desktop
 342                         if (!empty($user_mobile_theme) && $user_mobile_theme !== '---') {
 343                                 return $user_mobile_theme;
 344                         }
 345                 }
 346
 347                 if (!$this->currentTheme) {
 348                         $this->computeCurrentTheme();
 349                 }
 350
 351                 return $this->currentTheme;
 352         }
 353
 354         /**
 355          * Returns the current mobile theme name.
 356          *
 357          * @return string
 358          * @throws Exception
 359          */
 360         public function getCurrentMobileTheme()
 361         {
 362                 if ($this->mode->isInstall()) {
 363                         return '';
 364                 }
 365
 366                 if (is_null($this->currentMobileTheme)) {
 367                         $this->computeCurrentMobileTheme();
 368                 }
 369
 370                 return $this->currentMobileTheme;
 371         }
 372
 373         public function setCurrentTheme($theme)
 374         {
 375                 $this->currentTheme = $theme;
 376         }
 377
 378         public function setCurrentMobileTheme($theme)
 379         {
 380                 $this->currentMobileTheme = $theme;
 381         }
 382
 383         /**
 384          * Computes the current theme name based on the node settings, the page owner settings and the user settings
 385          *
 386          * @throws Exception
 387          */
 388         private function computeCurrentTheme()
 389         {
 390                 $system_theme = $this->config->get('system', 'theme');
 391                 if (!$system_theme) {
 392                         throw new Exception($this->l10n->t('No system theme config value set.'));
 393                 }
 394
 395                 // Sane default
 396                 $this->setCurrentTheme($system_theme);
 397
 398                 $page_theme = null;
 399                 // Find the theme that belongs to the user whose stuff we are looking at
 400                 if ($this->profile_uid && ($this->profile_uid != local_user())) {
 401                         // Allow folks to override user themes and always use their own on their own site.
 402                         // This works only if the user is on the same server
 403                         $user = $this->database->selectFirst('user', ['theme'], ['uid' => $this->profile_uid]);
 404                         if ($this->database->isResult($user) && !Core\PConfig::get(local_user(), 'system', 'always_my_theme')) {
 405                                 $page_theme = $user['theme'];
 406                         }
 407                 }
 408
 409                 $theme_name = $page_theme ?: Core\Session::get('theme', $system_theme);
 410
 411                 $theme_name = Strings::sanitizeFilePathItem($theme_name);
 412                 if ($theme_name
 413                     && in_array($theme_name, Theme::getAllowedList())
 414                     && (file_exists('view/theme/' . $theme_name . '/style.css')
 415                         || file_exists('view/theme/' . $theme_name . '/style.php'))
 416                 ) {
 417                         $this->setCurrentTheme($theme_name);
 418                 }
 419         }
 420
 421         /**
 422          * Computes the current mobile theme name based on the node settings, the page owner settings and the user settings
 423          */
 424         private function computeCurrentMobileTheme()
 425         {
 426                 $system_mobile_theme = $this->config->get('system', 'mobile-theme', '');
 427
 428                 // Sane default
 429                 $this->setCurrentMobileTheme($system_mobile_theme);
 430
 431                 $page_mobile_theme = null;
 432                 // Find the theme that belongs to the user whose stuff we are looking at
 433                 if ($this->profile_uid && ($this->profile_uid != local_user())) {
 434                         // Allow folks to override user themes and always use their own on their own site.
 435                         // This works only if the user is on the same server
 436                         if (!Core\PConfig::get(local_user(), 'system', 'always_my_theme')) {
 437                                 $page_mobile_theme = Core\PConfig::get($this->profile_uid, 'system', 'mobile-theme');
 438                         }
 439                 }
 440
 441                 $mobile_theme_name = $page_mobile_theme ?: Core\Session::get('mobile-theme', $system_mobile_theme);
 442
 443                 $mobile_theme_name = Strings::sanitizeFilePathItem($mobile_theme_name);
 444                 if ($mobile_theme_name == '---'
 445                         ||
 446                         in_array($mobile_theme_name, Theme::getAllowedList())
 447                         && (file_exists('view/theme/' . $mobile_theme_name . '/style.css')
 448                                 || file_exists('view/theme/' . $mobile_theme_name . '/style.php'))
 449                 ) {
 450                         $this->setCurrentMobileTheme($mobile_theme_name);
 451                 }
 452         }
 453
 454         /**
 455          * @brief Return full URL to theme which is currently in effect.
 456          *
 457          * Provide a sane default if nothing is chosen or the specified theme does not exist.
 458          *
 459          * @return string
 460          * @throws Exception
 461          */
 462         public function getCurrentThemeStylesheetPath()
 463         {
 464                 return Core\Theme::getStylesheetPath($this->getCurrentTheme());
 465         }
 466
 467         /**
 468          * Sets the base url for use in cmdline programs which don't have
 469          * $_SERVER variables
 470          */
 471         public function checkURL()
 472         {
 473                 $url = $this->config->get('system', 'url');
 474
 475                 // if the url isn't set or the stored url is radically different
 476                 // than the currently visited url, store the current value accordingly.
 477                 // "Radically different" ignores common variations such as http vs https
 478                 // and www.example.com vs example.com.
 479                 // We will only change the url to an ip address if there is no existing setting
 480
 481                 if (empty($url) || (!Util\Strings::compareLink($url, $this->getBaseURL())) && (!preg_match("/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/", $this->baseURL->getHostname()))) {
 482                         $this->config->set('system', 'url', $this->getBaseURL());
 483                 }
 484         }
 485
 486         /**
 487          * Frontend App script
 488          *
 489          * The App object behaves like a container and a dispatcher at the same time, including a representation of the
 490          * request and a representation of the response.
 491          *
 492          * This probably should change to limit the size of this monster method.
 493          *
 494          * @param App\Module     $module The determined module
 495          * @param App\Router     $router
 496          * @param PConfiguration $pconfig
 497          * @param Authentication $auth The Authentication backend of the node
 498          * @throws HTTPException\InternalServerErrorException
 499          * @throws \ImagickException
 500          */
 501         public function runFrontend(App\Module $module, App\Router $router, PConfiguration $pconfig, Authentication $auth)
 502         {
 503                 $moduleName = $module->getName();
 504
 505                 try {
 506                         // Missing DB connection: ERROR
 507                         if ($this->mode->has(App\Mode::LOCALCONFIGPRESENT) && !$this->mode->has(App\Mode::DBAVAILABLE)) {
 508                                 throw new HTTPException\InternalServerErrorException('Apologies but the website is unavailable at the moment.');
 509                         }
 510
 511                         // Max Load Average reached: ERROR
 512                         if ($this->process->isMaxProcessesReached() || $this->process->isMaxLoadReached()) {
 513                                 header('Retry-After: 120');
 514                                 header('Refresh: 120; url=' . $this->baseURL->get() . "/" . $this->args->getQueryString());
 515
 516                                 throw new HTTPException\ServiceUnavailableException('The node is currently overloaded. Please try again later.');
 517                         }
 518
 519                         if (!$this->mode->isInstall()) {
 520                                 // Force SSL redirection
 521                                 if ($this->baseURL->checkRedirectHttps()) {
 522                                         System::externalRedirect($this->baseURL->get() . '/' . $this->args->getQueryString());
 523                                 }
 524
 525                                 Core\Hook::callAll('init_1');
 526                         }
 527
 528                         // Exclude the backend processes from the session management
 529                         if ($this->mode->isBackend()) {
 530                                 Core\Worker::executeIfIdle();
 531                         }
 532
 533                         if ($this->mode->isNormal()) {
 534                                 $requester = HTTPSignature::getSigner('', $_SERVER);
 535                                 if (!empty($requester)) {
 536                                         Profile::addVisitorCookieForHandle($requester);
 537                                 }
 538                         }
 539
 540                         // ZRL
 541                         if (!empty($_GET['zrl']) && $this->mode->isNormal()) {
 542                                 if (!local_user()) {
 543                                         // Only continue when the given profile link seems valid
 544                                         // Valid profile links contain a path with "/profile/" and no query parameters
 545                                         if ((parse_url($_GET['zrl'], PHP_URL_QUERY) == "") &&
 546                                             strstr(parse_url($_GET['zrl'], PHP_URL_PATH), "/profile/")) {
 547                                                 if (Core\Session::get('visitor_home') != $_GET["zrl"]) {
 548                                                         Core\Session::set('my_url', $_GET['zrl']);
 549                                                         Core\Session::set('authenticated', 0);
 550                                                 }
 551
 552                                                 Model\Profile::zrlInit($this);
 553                                         } else {
 554                                                 // Someone came with an invalid parameter, maybe as a DDoS attempt
 555                                                 // We simply stop processing here
 556                                                 $this->logger->debug('Invalid ZRL parameter.', ['zrl' => $_GET['zrl']]);
 557                                                 throw new HTTPException\ForbiddenException();
 558                                         }
 559                                 }
 560                         }
 561
 562                         if (!empty($_GET['owt']) && $this->mode->isNormal()) {
 563                                 $token = $_GET['owt'];
 564                                 Model\Profile::openWebAuthInit($token);
 565                         }
 566
 567                         $auth->withSession($this);
 568
 569                         if (empty($_SESSION['authenticated'])) {
 570                                 header('X-Account-Management-Status: none');
 571                         }
 572
 573                         $_SESSION['sysmsg']       = Core\Session::get('sysmsg', []);
 574                         $_SESSION['sysmsg_info']  = Core\Session::get('sysmsg_info', []);
 575                         $_SESSION['last_updated'] = Core\Session::get('last_updated', []);
 576
 577                         /*
 578                          * check_config() is responsible for running update scripts. These automatically
 579                          * update the DB schema whenever we push a new one out. It also checks to see if
 580                          * any addons have been added or removed and reacts accordingly.
 581                          */
 582
 583                         // in install mode, any url loads install module
 584                         // but we need "view" module for stylesheet
 585                         if ($this->mode->isInstall() && $moduleName !== 'install') {
 586                                 $this->baseURL->redirect('install');
 587                         } elseif (!$this->mode->isInstall() && !$this->mode->has(App\Mode::MAINTENANCEDISABLED) && $moduleName !== 'maintenance') {
 588                                 $this->baseURL->redirect('maintenance');
 589                         } else {
 590                                 $this->checkURL();
 591                                 Core\Update::check($this->getBasePath(), false, $this->mode);
 592                                 Core\Addon::loadAddons();
 593                                 Core\Hook::loadHooks();
 594                         }
 595
 596                         // Compatibility with the Android Diaspora client
 597                         if ($moduleName == 'stream') {
 598                                 $this->baseURL->redirect('network?order=post');
 599                         }
 600
 601                         if ($moduleName == 'conversations') {
 602                                 $this->baseURL->redirect('message');
 603                         }
 604
 605                         if ($moduleName == 'commented') {
 606                                 $this->baseURL->redirect('network?order=comment');
 607                         }
 608
 609                         if ($moduleName == 'liked') {
 610                                 $this->baseURL->redirect('network?order=comment');
 611                         }
 612
 613                         if ($moduleName == 'activity') {
 614                                 $this->baseURL->redirect('network?conv=1');
 615                         }
 616
 617                         if (($moduleName == 'status_messages') && ($this->args->getCommand() == 'status_messages/new')) {
 618                                 $this->baseURL->redirect('bookmarklet');
 619                         }
 620
 621                         if (($moduleName == 'user') && ($this->args->getCommand() == 'user/edit')) {
 622                                 $this->baseURL->redirect('settings');
 623                         }
 624
 625                         if (($moduleName == 'tag_followings') && ($this->args->getCommand() == 'tag_followings/manage')) {
 626                                 $this->baseURL->redirect('search');
 627                         }
 628
 629                         // Initialize module that can set the current theme in the init() method, either directly or via App->profile_uid
 630                         $this->page['page_title'] = $moduleName;
 631
 632                         // determine the module class and save it to the module instance
 633                         // @todo there's an implicit dependency due SESSION::start(), so it has to be called here (yet)
 634                         $module = $module->determineClass($this->args, $router, $this->config);
 635
 636                         // Let the module run it's internal process (init, get, post, ...)
 637                         $module->run($this->l10n, $this->baseURL, $this->logger, $_SERVER, $_POST);
 638                 } catch (HTTPException $e) {
 639                         ModuleHTTPException::rawContent($e);
 640                 }
 641
 642                 $this->page->run($this, $this->baseURL, $this->mode, $module, $this->l10n, $this->config, $pconfig);
 643         }
 644
 645         /**
 646          * Automatically redirects to relative or absolute URL
 647          * Should only be used if it isn't clear if the URL is either internal or external
 648          *
 649          * @param string $toUrl The target URL
 650          *
 651          * @throws HTTPException\InternalServerErrorException
 652          */
 653         public function redirect($toUrl)
 654         {
 655                 if (!empty(parse_url($toUrl, PHP_URL_SCHEME))) {
 656                         Core\System::externalRedirect($toUrl);
 657                 } else {
 658                         $this->baseURL->redirect($toUrl);
 659                 }
 660         }
 661 }