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\Core\Config\Cache\ConfigCache;
  12 use Friendica\Core\Config\Configuration;
  13 use Friendica\Core\Config\PConfiguration;
  14 use Friendica\Core\L10n\L10n;
  15 use Friendica\Core\System;
  16 use Friendica\Core\Theme;
  17 use Friendica\Database\Database;
  18 use Friendica\Model\Profile;
  19 use Friendica\Module\Login;
  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         /**
  96          * @var string The name of the current theme
  97          */
  98         private $currentTheme;
  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          * Returns the current config cache of this node
 132          *
 133          * @return ConfigCache
 134          */
 135         public function getConfigCache()
 136         {
 137                 return $this->config->getCache();
 138         }
 139
 140         /**
 141          * Returns the current config of this node
 142          *
 143          * @return Configuration
 144          */
 145         public function getConfig()
 146         {
 147                 return $this->config;
 148         }
 149
 150         /**
 151          * The basepath of this app
 152          *
 153          * @return string
 154          */
 155         public function getBasePath()
 156         {
 157                 // Don't use the basepath of the config table for basepath (it should always be the config-file one)
 158                 return $this->config->getCache()->get('system', 'basepath');
 159         }
 160
 161         /**
 162          * The Logger of this app
 163          *
 164          * @return LoggerInterface
 165          */
 166         public function getLogger()
 167         {
 168                 return $this->logger;
 169         }
 170
 171         /**
 172          * The profiler of this app
 173          *
 174          * @return Profiler
 175          */
 176         public function getProfiler()
 177         {
 178                 return $this->profiler;
 179         }
 180
 181         /**
 182          * Returns the Mode of the Application
 183          *
 184          * @return App\Mode The Application Mode
 185          */
 186         public function getMode()
 187         {
 188                 return $this->mode;
 189         }
 190
 191         /**
 192          * Returns the Database of the Application
 193          *
 194          * @return Database
 195          */
 196         public function getDBA()
 197         {
 198                 return $this->database;
 199         }
 200
 201         /**
 202          * @deprecated 2019.09 - use Page->registerStylesheet instead
 203          * @see Page::registerStylesheet()
 204          */
 205         public function registerStylesheet($path)
 206         {
 207                 $this->page->registerStylesheet($path);
 208         }
 209
 210         /**
 211          * @deprecated 2019.09 - use Page->registerFooterScript instead
 212          * @see Page::registerFooterScript()
 213          */
 214         public function registerFooterScript($path)
 215         {
 216                 $this->page->registerFooterScript($path);
 217         }
 218
 219         /**
 220          * @param Database        $database     The Friendica Database
 221          * @param Configuration   $config       The Configuration
 222          * @param App\Mode        $mode         The mode of this Friendica app
 223          * @param BaseURL         $baseURL      The full base URL of this Friendica app
 224          * @param LoggerInterface $logger       The current app logger
 225          * @param Profiler        $profiler     The profiler of this application
 226          * @param L10n            $l10n         The translator instance
 227          * @param App\Arguments   $args         The Friendica Arguments of the call
 228          */
 229         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)
 230         {
 231                 $this->database     = $database;
 232                 $this->config       = $config;
 233                 $this->mode         = $mode;
 234                 $this->baseURL      = $baseURL;
 235                 $this->profiler     = $profiler;
 236                 $this->logger       = $logger;
 237                 $this->l10n         = $l10n;
 238                 $this->args         = $args;
 239
 240                 $this->cmd          = $args->getCommand();
 241                 $this->argv         = $args->getArgv();
 242                 $this->argc         = $args->getArgc();
 243                 $this->query_string = $args->getQueryString();
 244                 $this->module       = $module->getName();
 245                 $this->page         = $page;
 246
 247                 $this->is_mobile = $mode->isMobile();
 248                 $this->is_tablet = $mode->isTablet();
 249
 250                 $this->load();
 251         }
 252
 253         /**
 254          * Load the whole app instance
 255          */
 256         public function load()
 257         {
 258                 set_time_limit(0);
 259
 260                 // This has to be quite large to deal with embedded private photos
 261                 ini_set('pcre.backtrack_limit', 500000);
 262
 263                 set_include_path(
 264                         get_include_path() . PATH_SEPARATOR
 265                         . $this->getBasePath() . DIRECTORY_SEPARATOR . 'include' . PATH_SEPARATOR
 266                         . $this->getBasePath() . DIRECTORY_SEPARATOR . 'library' . PATH_SEPARATOR
 267                         . $this->getBasePath());
 268
 269                 $this->profiler->reset();
 270
 271                 if ($this->mode->has(App\Mode::DBAVAILABLE)) {
 272                         $this->profiler->update($this->config);
 273
 274                         Core\Hook::loadHooks();
 275                         $loader = new ConfigFileLoader($this->getBasePath());
 276                         Core\Hook::callAll('load_config', $loader);
 277                 }
 278
 279                 $this->loadDefaultTimezone();
 280                 // Register template engines
 281                 Core\Renderer::registerTemplateEngine('Friendica\Render\FriendicaSmartyEngine');
 282         }
 283
 284         /**
 285          * Loads the default timezone
 286          *
 287          * Include support for legacy $default_timezone
 288          *
 289          * @global string $default_timezone
 290          */
 291         private function loadDefaultTimezone()
 292         {
 293                 if ($this->config->get('system', 'default_timezone')) {
 294                         $this->timezone = $this->config->get('system', 'default_timezone');
 295                 } else {
 296                         global $default_timezone;
 297                         $this->timezone = !empty($default_timezone) ? $default_timezone : 'UTC';
 298                 }
 299
 300                 if ($this->timezone) {
 301                         date_default_timezone_set($this->timezone);
 302                 }
 303         }
 304
 305         /**
 306          * Returns the scheme of the current call
 307          *
 308          * @return string
 309          *
 310          * @deprecated 2019.06 - use BaseURL->getScheme() instead
 311          */
 312         public function getScheme()
 313         {
 314                 return $this->baseURL->getScheme();
 315         }
 316
 317         /**
 318          * Retrieves the Friendica instance base URL
 319          *
 320          * @param bool $ssl Whether to append http or https under BaseURL::SSL_POLICY_SELFSIGN
 321          *
 322          * @return string Friendica server base URL
 323          *
 324          * @deprecated 2019.09 - use BaseUrl->get($ssl) instead
 325          */
 326         public function getBaseURL($ssl = false)
 327         {
 328                 return $this->baseURL->get($ssl);
 329         }
 330
 331         /**
 332          * @brief      Initializes the baseurl components
 333          *
 334          * Clears the baseurl cache to prevent inconsistencies
 335          *
 336          * @param string $url
 337          *
 338          * @deprecated 2019.06 - use BaseURL->saveByURL($url) instead
 339          */
 340         public function setBaseURL($url)
 341         {
 342                 $this->baseURL->saveByURL($url);
 343         }
 344
 345         /**
 346          * Returns the current hostname
 347          *
 348          * @return string
 349          *
 350          * @deprecated 2019.06 - use BaseURL->getHostname() instead
 351          */
 352         public function getHostName()
 353         {
 354                 return $this->baseURL->getHostname();
 355         }
 356
 357         /**
 358          * Returns the sub-path of the full URL
 359          *
 360          * @return string
 361          *
 362          * @deprecated 2019.06 - use BaseURL->getUrlPath() instead
 363          */
 364         public function getURLPath()
 365         {
 366                 return $this->baseURL->getUrlPath();
 367         }
 368
 369         /**
 370          * @brief      Removes the base url from an url. This avoids some mixed content problems.
 371          *
 372          * @param string $origURL
 373          *
 374          * @return string The cleaned url
 375          *
 376          * @deprecated 2019.09 - Use BaseURL->remove() instead
 377          * @see        BaseURL::remove()
 378          */
 379         public function removeBaseURL($origURL)
 380         {
 381                 return $this->baseURL->remove($origURL);
 382         }
 383
 384         /**
 385          * Returns the current UserAgent as a String
 386          *
 387          * @return string the UserAgent as a String
 388          * @throws HTTPException\InternalServerErrorException
 389          */
 390         public function getUserAgent()
 391         {
 392                 return
 393                         FRIENDICA_PLATFORM . " '" .
 394                         FRIENDICA_CODENAME . "' " .
 395                         FRIENDICA_VERSION . '-' .
 396                         DB_UPDATE_VERSION . '; ' .
 397                         $this->getBaseURL();
 398         }
 399
 400         /**
 401          * @brief Checks if the maximum number of database processes is reached
 402          *
 403          * @return bool Is the limit reached?
 404          */
 405         public function isMaxProcessesReached()
 406         {
 407                 // Deactivated, needs more investigating if this check really makes sense
 408                 return false;
 409
 410                 /*
 411                  * Commented out to suppress static analyzer issues
 412                  *
 413                 if ($this->is_backend()) {
 414                         $process = 'backend';
 415                         $max_processes = $this->config->get('system', 'max_processes_backend');
 416                         if (intval($max_processes) == 0) {
 417                                 $max_processes = 5;
 418                         }
 419                 } else {
 420                         $process = 'frontend';
 421                         $max_processes = $this->config->get('system', 'max_processes_frontend');
 422                         if (intval($max_processes) == 0) {
 423                                 $max_processes = 20;
 424                         }
 425                 }
 426
 427                 $processlist = DBA::processlist();
 428                 if ($processlist['list'] != '') {
 429                         $this->logger->debug('Processcheck: Processes: ' . $processlist['amount'] . ' - Processlist: ' . $processlist['list']);
 430
 431                         if ($processlist['amount'] > $max_processes) {
 432                                 $this->logger->debug('Processcheck: Maximum number of processes for ' . $process . ' tasks (' . $max_processes . ') reached.');
 433                                 return true;
 434                         }
 435                 }
 436                 return false;
 437                  */
 438         }
 439
 440         /**
 441          * @brief Checks if the minimal memory is reached
 442          *
 443          * @return bool Is the memory limit reached?
 444          * @throws HTTPException\InternalServerErrorException
 445          */
 446         public function isMinMemoryReached()
 447         {
 448                 $min_memory = $this->config->get('system', 'min_memory', 0);
 449                 if ($min_memory == 0) {
 450                         return false;
 451                 }
 452
 453                 if (!is_readable('/proc/meminfo')) {
 454                         return false;
 455                 }
 456
 457                 $memdata = explode("\n", file_get_contents('/proc/meminfo'));
 458
 459                 $meminfo = [];
 460                 foreach ($memdata as $line) {
 461                         $data = explode(':', $line);
 462                         if (count($data) != 2) {
 463                                 continue;
 464                         }
 465                         list($key, $val) = $data;
 466                         $meminfo[$key] = (int)trim(str_replace('kB', '', $val));
 467                         $meminfo[$key] = (int)($meminfo[$key] / 1024);
 468                 }
 469
 470                 if (!isset($meminfo['MemFree'])) {
 471                         return false;
 472                 }
 473
 474                 $free = $meminfo['MemFree'];
 475
 476                 $reached = ($free < $min_memory);
 477
 478                 if ($reached) {
 479                         $this->logger->debug('Minimal memory reached.', ['free' => $free, 'memtotal' => $meminfo['MemTotal'], 'limit' => $min_memory]);
 480                 }
 481
 482                 return $reached;
 483         }
 484
 485         /**
 486          * @brief Checks if the maximum load is reached
 487          *
 488          * @return bool Is the load reached?
 489          * @throws HTTPException\InternalServerErrorException
 490          */
 491         public function isMaxLoadReached()
 492         {
 493                 if ($this->mode->isBackend()) {
 494                         $process    = 'backend';
 495                         $maxsysload = intval($this->config->get('system', 'maxloadavg'));
 496                         if ($maxsysload < 1) {
 497                                 $maxsysload = 50;
 498                         }
 499                 } else {
 500                         $process    = 'frontend';
 501                         $maxsysload = intval($this->config->get('system', 'maxloadavg_frontend'));
 502                         if ($maxsysload < 1) {
 503                                 $maxsysload = 50;
 504                         }
 505                 }
 506
 507                 $load = Core\System::currentLoad();
 508                 if ($load) {
 509                         if (intval($load) > $maxsysload) {
 510                                 $this->logger->info('system load for process too high.', ['load' => $load, 'process' => $process, 'maxsysload' => $maxsysload]);
 511                                 return true;
 512                         }
 513                 }
 514                 return false;
 515         }
 516
 517         /**
 518          * Executes a child process with 'proc_open'
 519          *
 520          * @param string $command The command to execute
 521          * @param array  $args    Arguments to pass to the command ( [ 'key' => value, 'key2' => value2, ... ]
 522          *
 523          * @throws HTTPException\InternalServerErrorException
 524          */
 525         public function proc_run($command, $args)
 526         {
 527                 if (!function_exists('proc_open')) {
 528                         return;
 529                 }
 530
 531                 $cmdline = $this->config->get('config', 'php_path', 'php') . ' ' . escapeshellarg($command);
 532
 533                 foreach ($args as $key => $value) {
 534                         if (!is_null($value) && is_bool($value) && !$value) {
 535                                 continue;
 536                         }
 537
 538                         $cmdline .= ' --' . $key;
 539                         if (!is_null($value) && !is_bool($value)) {
 540                                 $cmdline .= ' ' . $value;
 541                         }
 542                 }
 543
 544                 if ($this->isMinMemoryReached()) {
 545                         return;
 546                 }
 547
 548                 if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
 549                         $resource = proc_open('cmd /c start /b ' . $cmdline, [], $foo, $this->getBasePath());
 550                 } else {
 551                         $resource = proc_open($cmdline . ' &', [], $foo, $this->getBasePath());
 552                 }
 553                 if (!is_resource($resource)) {
 554                         $this->logger->debug('We got no resource for command.', ['cmd' => $cmdline]);
 555                         return;
 556                 }
 557                 proc_close($resource);
 558         }
 559
 560         /**
 561          * Generates the site's default sender email address
 562          *
 563          * @return string
 564          * @throws HTTPException\InternalServerErrorException
 565          */
 566         public function getSenderEmailAddress()
 567         {
 568                 $sender_email = $this->config->get('config', 'sender_email');
 569                 if (empty($sender_email)) {
 570                         $hostname = $this->baseURL->getHostname();
 571                         if (strpos($hostname, ':')) {
 572                                 $hostname = substr($hostname, 0, strpos($hostname, ':'));
 573                         }
 574
 575                         $sender_email = 'noreply@' . $hostname;
 576                 }
 577
 578                 return $sender_email;
 579         }
 580
 581         /**
 582          * Returns the current theme name.
 583          *
 584          * @return string the name of the current theme
 585          * @throws HTTPException\InternalServerErrorException
 586          */
 587         public function getCurrentTheme()
 588         {
 589                 if ($this->mode->isInstall()) {
 590                         return '';
 591                 }
 592
 593                 if (!$this->currentTheme) {
 594                         $this->computeCurrentTheme();
 595                 }
 596
 597                 return $this->currentTheme;
 598         }
 599
 600         public function setCurrentTheme($theme)
 601         {
 602                 $this->currentTheme = $theme;
 603         }
 604
 605         /**
 606          * Computes the current theme name based on the node settings, the user settings and the device type
 607          *
 608          * @throws Exception
 609          */
 610         private function computeCurrentTheme()
 611         {
 612                 $system_theme = $this->config->get('system', 'theme');
 613                 if (!$system_theme) {
 614                         throw new Exception($this->l10n->t('No system theme config value set.'));
 615                 }
 616
 617                 // Sane default
 618                 $this->currentTheme = $system_theme;
 619
 620                 $page_theme = null;
 621                 // Find the theme that belongs to the user whose stuff we are looking at
 622                 if ($this->profile_uid && ($this->profile_uid != local_user())) {
 623                         // Allow folks to override user themes and always use their own on their own site.
 624                         // This works only if the user is on the same server
 625                         $user = $this->database->selectFirst('user', ['theme'], ['uid' => $this->profile_uid]);
 626                         if ($this->database->isResult($user) && !Core\PConfig::get(local_user(), 'system', 'always_my_theme')) {
 627                                 $page_theme = $user['theme'];
 628                         }
 629                 }
 630
 631                 $user_theme = Core\Session::get('theme', $system_theme);
 632
 633                 // Specific mobile theme override
 634                 if (($this->is_mobile || $this->is_tablet) && Core\Session::get('show-mobile', true)) {
 635                         $system_mobile_theme = $this->config->get('system', 'mobile-theme');
 636                         $user_mobile_theme   = Core\Session::get('mobile-theme', $system_mobile_theme);
 637
 638                         // --- means same mobile theme as desktop
 639                         if (!empty($user_mobile_theme) && $user_mobile_theme !== '---') {
 640                                 $user_theme = $user_mobile_theme;
 641                         }
 642                 }
 643
 644                 if ($page_theme) {
 645                         $theme_name = $page_theme;
 646                 } else {
 647                         $theme_name = $user_theme;
 648                 }
 649
 650                 $theme_name = Strings::sanitizeFilePathItem($theme_name);
 651                 if ($theme_name
 652                     && in_array($theme_name, Theme::getAllowedList())
 653                     && (file_exists('view/theme/' . $theme_name . '/style.css')
 654                         || file_exists('view/theme/' . $theme_name . '/style.php'))
 655                 ) {
 656                         $this->currentTheme = $theme_name;
 657                 }
 658         }
 659
 660         /**
 661          * @brief Return full URL to theme which is currently in effect.
 662          *
 663          * Provide a sane default if nothing is chosen or the specified theme does not exist.
 664          *
 665          * @return string
 666          * @throws HTTPException\InternalServerErrorException
 667          */
 668         public function getCurrentThemeStylesheetPath()
 669         {
 670                 return Core\Theme::getStylesheetPath($this->getCurrentTheme());
 671         }
 672
 673         /**
 674          * @deprecated 2019.09 - use App\Mode->isAjax() instead
 675          * @see App\Mode::isAjax()
 676          */
 677         public function isAjax()
 678         {
 679                 return $this->mode->isAjax();
 680         }
 681
 682         /**
 683          * @deprecated use Arguments->get() instead
 684          *
 685          * @see        App\Arguments
 686          */
 687         public function getArgumentValue($position, $default = '')
 688         {
 689                 return $this->args->get($position, $default);
 690         }
 691
 692         /**
 693          * Sets the base url for use in cmdline programs which don't have
 694          * $_SERVER variables
 695          */
 696         public function checkURL()
 697         {
 698                 $url = $this->config->get('system', 'url');
 699
 700                 // if the url isn't set or the stored url is radically different
 701                 // than the currently visited url, store the current value accordingly.
 702                 // "Radically different" ignores common variations such as http vs https
 703                 // and www.example.com vs example.com.
 704                 // We will only change the url to an ip address if there is no existing setting
 705
 706                 if (empty($url) || (!Util\Strings::compareLink($url, $this->getBaseURL())) && (!preg_match("/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/", $this->baseURL->getHostname()))) {
 707                         $this->config->set('system', 'url', $this->getBaseURL());
 708                 }
 709         }
 710
 711         /**
 712          * Frontend App script
 713          *
 714          * The App object behaves like a container and a dispatcher at the same time, including a representation of the
 715          * request and a representation of the response.
 716          *
 717          * This probably should change to limit the size of this monster method.
 718          *
 719          * @param App\Module $module The determined module
 720          */
 721         public function runFrontend(App\Module $module, App\Router $router, PConfiguration $pconfig)
 722         {
 723                 $moduleName = $module->getName();
 724
 725                 try {
 726                         // Missing DB connection: ERROR
 727                         if ($this->mode->has(App\Mode::LOCALCONFIGPRESENT) && !$this->mode->has(App\Mode::DBAVAILABLE)) {
 728                                 throw new HTTPException\InternalServerErrorException('Apologies but the website is unavailable at the moment.');
 729                         }
 730
 731                         // Max Load Average reached: ERROR
 732                         if ($this->isMaxProcessesReached() || $this->isMaxLoadReached()) {
 733                                 header('Retry-After: 120');
 734                                 header('Refresh: 120; url=' . $this->baseURL->get() . "/" . $this->args->getQueryString());
 735
 736                                 throw new HTTPException\ServiceUnavailableException('The node is currently overloaded. Please try again later.');
 737                         }
 738
 739                         if (!$this->mode->isInstall()) {
 740                                 // Force SSL redirection
 741                                 if ($this->baseURL->checkRedirectHttps()) {
 742                                         System::externalRedirect($this->baseURL->get() . '/' . $this->args->getQueryString());
 743                                 }
 744
 745                                 Core\Session::init();
 746                                 Core\Hook::callAll('init_1');
 747                         }
 748
 749                         // Exclude the backend processes from the session management
 750                         if (!$this->mode->isBackend()) {
 751                                 $stamp1 = microtime(true);
 752                                 session_start();
 753                                 $this->profiler->saveTimestamp($stamp1, 'parser', Core\System::callstack());
 754                                 $this->l10n->setSessionVariable();
 755                                 $this->l10n->setLangFromSession();
 756                         } else {
 757                                 $_SESSION = [];
 758                                 Core\Worker::executeIfIdle();
 759                         }
 760
 761                         if ($this->mode->isNormal()) {
 762                                 $requester = HTTPSignature::getSigner('', $_SERVER);
 763                                 if (!empty($requester)) {
 764                                         Profile::addVisitorCookieForHandle($requester);
 765                                 }
 766                         }
 767
 768                         // ZRL
 769                         if (!empty($_GET['zrl']) && $this->mode->isNormal()) {
 770                                 if (!local_user()) {
 771                                         // Only continue when the given profile link seems valid
 772                                         // Valid profile links contain a path with "/profile/" and no query parameters
 773                                         if ((parse_url($_GET['zrl'], PHP_URL_QUERY) == "") &&
 774                                             strstr(parse_url($_GET['zrl'], PHP_URL_PATH), "/profile/")) {
 775                                                 if (Core\Session::get('visitor_home') != $_GET["zrl"]) {
 776                                                         Core\Session::set('my_url', $_GET['zrl']);
 777                                                         Core\Session::set('authenticated', 0);
 778                                                 }
 779
 780                                                 Model\Profile::zrlInit($this);
 781                                         } else {
 782                                                 // Someone came with an invalid parameter, maybe as a DDoS attempt
 783                                                 // We simply stop processing here
 784                                                 $this->logger->debug('Invalid ZRL parameter.', ['zrl' => $_GET['zrl']]);
 785                                                 throw new HTTPException\ForbiddenException();
 786                                         }
 787                                 }
 788                         }
 789
 790                         if (!empty($_GET['owt']) && $this->mode->isNormal()) {
 791                                 $token = $_GET['owt'];
 792                                 Model\Profile::openWebAuthInit($token);
 793                         }
 794
 795                         Login::sessionAuth();
 796
 797                         if (empty($_SESSION['authenticated'])) {
 798                                 header('X-Account-Management-Status: none');
 799                         }
 800
 801                         $_SESSION['sysmsg']       = Core\Session::get('sysmsg', []);
 802                         $_SESSION['sysmsg_info']  = Core\Session::get('sysmsg_info', []);
 803                         $_SESSION['last_updated'] = Core\Session::get('last_updated', []);
 804
 805                         /*
 806                          * check_config() is responsible for running update scripts. These automatically
 807                          * update the DB schema whenever we push a new one out. It also checks to see if
 808                          * any addons have been added or removed and reacts accordingly.
 809                          */
 810
 811                         // in install mode, any url loads install module
 812                         // but we need "view" module for stylesheet
 813                         if ($this->mode->isInstall() && $moduleName !== 'install') {
 814                                 $this->internalRedirect('install');
 815                         } elseif (!$this->mode->isInstall() && !$this->mode->has(App\Mode::MAINTENANCEDISABLED) && $moduleName !== 'maintenance') {
 816                                 $this->internalRedirect('maintenance');
 817                         } else {
 818                                 $this->checkURL();
 819                                 Core\Update::check($this->getBasePath(), false, $this->mode);
 820                                 Core\Addon::loadAddons();
 821                                 Core\Hook::loadHooks();
 822                         }
 823
 824                         // Compatibility with the Android Diaspora client
 825                         if ($moduleName == 'stream') {
 826                                 $this->internalRedirect('network?order=post');
 827                         }
 828
 829                         if ($moduleName == 'conversations') {
 830                                 $this->internalRedirect('message');
 831                         }
 832
 833                         if ($moduleName == 'commented') {
 834                                 $this->internalRedirect('network?order=comment');
 835                         }
 836
 837                         if ($moduleName == 'liked') {
 838                                 $this->internalRedirect('network?order=comment');
 839                         }
 840
 841                         if ($moduleName == 'activity') {
 842                                 $this->internalRedirect('network?conv=1');
 843                         }
 844
 845                         if (($moduleName == 'status_messages') && ($this->args->getCommand() == 'status_messages/new')) {
 846                                 $this->internalRedirect('bookmarklet');
 847                         }
 848
 849                         if (($moduleName == 'user') && ($this->args->getCommand() == 'user/edit')) {
 850                                 $this->internalRedirect('settings');
 851                         }
 852
 853                         if (($moduleName == 'tag_followings') && ($this->args->getCommand() == 'tag_followings/manage')) {
 854                                 $this->internalRedirect('search');
 855                         }
 856
 857                         // Initialize module that can set the current theme in the init() method, either directly or via App->profile_uid
 858                         $this->page['page_title'] = $moduleName;
 859
 860                         // determine the module class and save it to the module instance
 861                         // @todo there's an implicit dependency due SESSION::start(), so it has to be called here (yet)
 862                         $module = $module->determineClass($this->args, $router, $this->config);
 863
 864                         // Let the module run it's internal process (init, get, post, ...)
 865                         $module->run($this->l10n, $this, $this->logger, $this->getCurrentTheme(), $_SERVER, $_POST);
 866
 867                 } catch (HTTPException $e) {
 868                         ModuleHTTPException::rawContent($e);
 869                 }
 870
 871                 $this->page->run($this, $this->baseURL, $this->mode, $module, $this->l10n, $this->config, $pconfig);
 872         }
 873
 874         /**
 875          * Redirects to another module relative to the current Friendica base.
 876          * If you want to redirect to a external URL, use System::externalRedirectTo()
 877          *
 878          * @param string $toUrl The destination URL (Default is empty, which is the default page of the Friendica node)
 879          * @param bool   $ssl   if true, base URL will try to get called with https:// (works just for relative paths)
 880          *
 881          * @throws HTTPException\InternalServerErrorException In Case the given URL is not relative to the Friendica node
 882          */
 883         public function internalRedirect($toUrl = '', $ssl = false)
 884         {
 885                 if (!empty(parse_url($toUrl, PHP_URL_SCHEME))) {
 886                         throw new HTTPException\InternalServerErrorException("'$toUrl is not a relative path, please use System::externalRedirectTo");
 887                 }
 888
 889                 $redirectTo = $this->baseURL->get($ssl) . '/' . ltrim($toUrl, '/');
 890                 Core\System::externalRedirect($redirectTo);
 891         }
 892
 893         /**
 894          * Automatically redirects to relative or absolute URL
 895          * Should only be used if it isn't clear if the URL is either internal or external
 896          *
 897          * @param string $toUrl The target URL
 898          *
 899          * @throws HTTPException\InternalServerErrorException
 900          */
 901         public function redirect($toUrl)
 902         {
 903                 if (!empty(parse_url($toUrl, PHP_URL_SCHEME))) {
 904                         Core\System::externalRedirect($toUrl);
 905                 } else {
 906                         $this->internalRedirect($toUrl);
 907                 }
 908         }
 909 }