admin/index.php

   1 <?php
   2
   3 // This file is part of Moodle - http://moodle.org/
   4 //
   5 // Moodle is free software: you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation, either version 3 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // Moodle is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 /**
  19  * Main administration script.
  20  *
  21  * @package    core
  22  * @copyright  1999 onwards Martin Dougiamas (http://dougiamas.com)
  23  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24  */
  25
  26 // Check that config.php exists, if not then call the install script
  27 if (!file_exists('../config.php')) {
  28     header('Location: ../install.php');
  29     die();
  30 }
  31
  32 // Check that PHP is of a sufficient version as soon as possible.
  33 require_once(__DIR__.'/../lib/phpminimumversionlib.php');
  34 moodle_require_minimum_php_version();
  35
  36 // make sure iconv is available and actually works
  37 if (!function_exists('iconv')) {
  38     // this should not happen, this must be very borked install
  39     echo 'Moodle requires the iconv PHP extension. Please install or enable the iconv extension.';
  40     die();
  41 }
  42
  43 // Make sure php5-json is available.
  44 if (!function_exists('json_encode') || !function_exists('json_decode')) {
  45     // This also shouldn't happen.
  46     echo 'Moodle requires the json PHP extension. Please install or enable the json extension.';
  47     die();
  48 }
  49
  50 // Make sure xml extension is available.
  51 if (!extension_loaded('xml')) {
  52     echo 'Moodle requires the xml PHP extension. Please install or enable the xml extension.';
  53     die();
  54 }
  55
  56 // Make sure mbstring extension is available.
  57 if (!extension_loaded('mbstring')) {
  58     echo 'Moodle requires the mbstring PHP extension. Please install or enable the mbstring extension.';
  59     die();
  60 }
  61
  62 define('NO_OUTPUT_BUFFERING', true);
  63
  64 if (isset($_POST['upgradekey'])) {
  65     // Before you start reporting issues about the collision attacks against
  66     // SHA-1, you should understand that we are not actually attempting to do
  67     // any cryptography here. This is hashed purely so that the key is not
  68     // that apparent in the address bar itself. Anyone who catches the HTTP
  69     // traffic can immediately use it as a valid admin key.
  70     header('Location: index.php?cache=0&upgradekeyhash='.sha1($_POST['upgradekey']));
  71     die();
  72 }
  73
  74 if ((isset($_GET['cache']) and $_GET['cache'] === '0')
  75         or (isset($_POST['cache']) and $_POST['cache'] === '0')
  76         or (!isset($_POST['cache']) and !isset($_GET['cache']) and empty($_GET['sesskey']) and empty($_POST['sesskey']))) {
  77     // Prevent caching at all cost when visiting this page directly,
  78     // we redirect to self once we known no upgrades are necessary.
  79     // Note: $_GET and $_POST are used here intentionally because our param cleaning is not loaded yet.
  80     // Note2: the sesskey is present in all block editing hacks, we can not redirect there, so enable caching.
  81     define('CACHE_DISABLE_ALL', true);
  82
  83     // Force OPcache reset if used, we do not want any stale caches
  84     // when detecting if upgrade necessary or when running upgrade.
  85     if (function_exists('opcache_reset')) {
  86         opcache_reset();
  87     }
  88     $cache = 0;
  89
  90 } else {
  91     $cache = 1;
  92 }
  93
  94 require('../config.php');
  95
  96 // Invalidate the cache of version.php in any circumstances to help core_component
  97 // detecting if the version has changed and component cache should be reset.
  98 if (function_exists('opcache_invalidate')) {
  99     opcache_invalidate($CFG->dirroot . '/version.php', true);
 100 }
 101 // Make sure the component cache gets rebuilt if necessary, any method that
 102 // indirectly calls the protected init() method is good here.
 103 core_component::get_core_subsystems();
 104
 105 if (is_major_upgrade_required() && isloggedin()) {
 106     // A major upgrade is required.
 107     // Terminate the session and redirect back here before anything DB-related happens.
 108     redirect_if_major_upgrade_required();
 109 }
 110
 111 require_once($CFG->libdir.'/adminlib.php');    // various admin-only functions
 112 require_once($CFG->libdir.'/upgradelib.php');  // general upgrade/install related functions
 113
 114 $confirmupgrade = optional_param('confirmupgrade', 0, PARAM_BOOL); // Core upgrade confirmed?
 115 $confirmrelease = optional_param('confirmrelease', 0, PARAM_BOOL); // Core release info and server checks confirmed?
 116 $confirmplugins = optional_param('confirmplugincheck', 0, PARAM_BOOL); // Plugins check page confirmed?
 117 $showallplugins = optional_param('showallplugins', 0, PARAM_BOOL); // Show all plugins on the plugins check page?
 118 $agreelicense = optional_param('agreelicense', 0, PARAM_BOOL); // GPL license confirmed for installation?
 119 $fetchupdates = optional_param('fetchupdates', 0, PARAM_BOOL); // Should check for available updates?
 120 $newaddonreq = optional_param('installaddonrequest', null, PARAM_RAW); // Plugin installation requested at moodle.org/plugins.
 121 $upgradekeyhash = optional_param('upgradekeyhash', null, PARAM_ALPHANUM); // Hash of provided upgrade key.
 122 $installdep = optional_param('installdep', null, PARAM_COMPONENT); // Install given missing dependency (required plugin).
 123 $installdepx = optional_param('installdepx', false, PARAM_BOOL); // Install all missing dependencies.
 124 $confirminstalldep = optional_param('confirminstalldep', false, PARAM_BOOL); // Installing dependencies confirmed.
 125 $abortinstall = optional_param('abortinstall', null, PARAM_COMPONENT); // Cancel installation of the given new plugin.
 126 $abortinstallx = optional_param('abortinstallx', null, PARAM_BOOL); // Cancel installation of all new plugins.
 127 $confirmabortinstall = optional_param('confirmabortinstall', false, PARAM_BOOL); // Installation cancel confirmed.
 128 $abortupgrade = optional_param('abortupgrade', null, PARAM_COMPONENT); // Cancel upgrade of the given existing plugin.
 129 $abortupgradex = optional_param('abortupgradex', null, PARAM_BOOL); // Cancel upgrade of all upgradable plugins.
 130 $confirmabortupgrade = optional_param('confirmabortupgrade', false, PARAM_BOOL); // Upgrade cancel confirmed.
 131 $installupdate = optional_param('installupdate', null, PARAM_COMPONENT); // Install given available update.
 132 $installupdateversion = optional_param('installupdateversion', null, PARAM_INT); // Version of the available update to install.
 133 $installupdatex = optional_param('installupdatex', false, PARAM_BOOL); // Install all available plugin updates.
 134 $confirminstallupdate = optional_param('confirminstallupdate', false, PARAM_BOOL); // Available update(s) install confirmed?
 135
 136 if (!empty($CFG->disableupdateautodeploy)) {
 137     // Invalidate all requests to install plugins via the admin UI.
 138     $newaddonreq = null;
 139     $installdep = null;
 140     $installdepx = false;
 141     $abortupgrade = null;
 142     $abortupgradex = null;
 143     $installupdate = null;
 144     $installupdateversion = null;
 145     $installupdatex = false;
 146 }
 147
 148 // Set up PAGE.
 149 $url = new moodle_url('/admin/index.php');
 150 $url->param('cache', $cache);
 151 if (isset($upgradekeyhash)) {
 152     $url->param('upgradekeyhash', $upgradekeyhash);
 153 }
 154 $PAGE->set_url($url);
 155 unset($url);
 156
 157 // Are we returning from an add-on installation request at moodle.org/plugins?
 158 if ($newaddonreq and !$cache and empty($CFG->disableupdateautodeploy)) {
 159     $target = new moodle_url('/admin/tool/installaddon/index.php', array(
 160         'installaddonrequest' => $newaddonreq,
 161         'confirm' => 0));
 162     if (!isloggedin() or isguestuser()) {
 163         // Login and go the the add-on tool page.
 164         $SESSION->wantsurl = $target->out();
 165         redirect(get_login_url());
 166     }
 167     redirect($target);
 168 }
 169
 170 $PAGE->set_pagelayout('admin'); // Set a default pagelayout
 171
 172 $documentationlink = '<a href="http://docs.moodle.org/en/Installation">Installation docs</a>';
 173
 174 // Check some PHP server settings
 175
 176 if (ini_get_bool('session.auto_start')) {
 177     throw new \moodle_exception('phpvaroff', 'debug', '',
 178         (object)array('name' => 'session.auto_start', 'link' => $documentationlink));
 179 }
 180
 181 if (!ini_get_bool('file_uploads')) {
 182     throw new \moodle_exception('phpvaron', 'debug', '',
 183         (object)array('name' => 'file_uploads', 'link' => $documentationlink));
 184 }
 185
 186 if (is_float_problem()) {
 187     throw new \moodle_exception('phpfloatproblem', 'admin', '', $documentationlink);
 188 }
 189
 190 // Set some necessary variables during set-up to avoid PHP warnings later on this page
 191 if (!isset($CFG->release)) {
 192     $CFG->release = '';
 193 }
 194 if (!isset($CFG->version)) {
 195     $CFG->version = '';
 196 }
 197 if (!isset($CFG->branch)) {
 198     $CFG->branch = '';
 199 }
 200
 201 $version = null;
 202 $release = null;
 203 $branch = null;
 204 require("$CFG->dirroot/version.php");       // defines $version, $release, $branch and $maturity
 205 $CFG->target_release = $release;            // used during installation and upgrades
 206
 207 if (!$version or !$release) {
 208     throw new \moodle_exception('withoutversion', 'debug'); // Without version, stop.
 209 }
 210
 211 if (!core_tables_exist()) {
 212     $PAGE->set_pagelayout('maintenance');
 213     $PAGE->set_popup_notification_allowed(false);
 214
 215     // fake some settings
 216     $CFG->docroot = 'http://docs.moodle.org';
 217
 218     $strinstallation = get_string('installation', 'install');
 219
 220     // remove current session content completely
 221     \core\session\manager::terminate_current();
 222
 223     if (empty($agreelicense)) {
 224         $strlicense = get_string('license');
 225
 226         $PAGE->navbar->add($strlicense);
 227         $PAGE->set_title($strinstallation . moodle_page::TITLE_SEPARATOR . 'Moodle ' . $CFG->target_release, false);
 228         $PAGE->set_heading($strinstallation);
 229         $PAGE->set_cacheable(false);
 230
 231         $output = $PAGE->get_renderer('core', 'admin');
 232         echo $output->install_licence_page();
 233         die();
 234     }
 235     if (empty($confirmrelease)) {
 236         require_once($CFG->libdir.'/environmentlib.php');
 237         list($envstatus, $environmentresults) = check_moodle_environment(normalize_version($release), ENV_SELECT_RELEASE);
 238         $strcurrentrelease = get_string('currentrelease');
 239
 240         $PAGE->navbar->add($strcurrentrelease);
 241         $PAGE->set_title($strinstallation);
 242         $PAGE->set_heading($strinstallation . ' - Moodle ' . $CFG->target_release);
 243         $PAGE->set_cacheable(false);
 244
 245         $output = $PAGE->get_renderer('core', 'admin');
 246         echo $output->install_environment_page($maturity, $envstatus, $environmentresults, $release);
 247         die();
 248     }
 249
 250     // check plugin dependencies
 251     $failed = array();
 252     if (!core_plugin_manager::instance()->all_plugins_ok($version, $failed, $CFG->branch)) {
 253         $PAGE->navbar->add(get_string('pluginscheck', 'admin'));
 254         $PAGE->set_title($strinstallation);
 255         $PAGE->set_heading($strinstallation . ' - Moodle ' . $CFG->target_release);
 256
 257         $output = $PAGE->get_renderer('core', 'admin');
 258         $url = new moodle_url($PAGE->url, array('agreelicense' => 1, 'confirmrelease' => 1, 'lang' => $CFG->lang));
 259         echo $output->unsatisfied_dependencies_page($version, $failed, $url);
 260         die();
 261     }
 262     unset($failed);
 263
 264     //TODO: add a page with list of non-standard plugins here
 265
 266     $strdatabasesetup = get_string('databasesetup');
 267     upgrade_init_javascript();
 268
 269     $PAGE->navbar->add($strdatabasesetup);
 270     $PAGE->set_title($strinstallation . moodle_page::TITLE_SEPARATOR . $CFG->target_release, false);
 271     $PAGE->set_heading($strinstallation);
 272     $PAGE->set_cacheable(false);
 273
 274     $output = $PAGE->get_renderer('core', 'admin');
 275     echo $output->header();
 276
 277     if (!$DB->setup_is_unicodedb()) {
 278         if (!$DB->change_db_encoding()) {
 279             // If could not convert successfully, throw error, and prevent installation
 280             throw new \moodle_exception('unicoderequired', 'admin');
 281         }
 282     }
 283
 284     install_core($version, true);
 285 }
 286
 287
 288 // Check version of Moodle code on disk compared with database
 289 // and upgrade if possible.
 290
 291 if (!$cache) {
 292     // Do not try to do anything fancy in non-cached mode,
 293     // this prevents themes from fetching data from non-existent tables.
 294     $PAGE->set_pagelayout('maintenance');
 295     $PAGE->set_popup_notification_allowed(false);
 296 }
 297
 298 $stradministration = get_string('administration');
 299 $PAGE->set_context(context_system::instance());
 300
 301 if (empty($CFG->version)) {
 302     throw new \moodle_exception('missingconfigversion', 'debug');
 303 }
 304
 305 // If an upgrade is running, an admin page starting a frontend upgrade could corrupt the
 306 // DB if the upgrade collided with an already running upgrade process at the wrong time.
 307 // Pull the value direct from the DB, this needs to *always* be correct.
 308 $outagelessupgrade = !empty($DB->get_field('config', 'value', ['name' => 'outagelessupgrade']));
 309 if (!$outagelessupgrade) {
 310     // Detect config cache inconsistency, this happens when you switch branches on dev servers.
 311     if ($CFG->version != $DB->get_field('config', 'value', array('name' => 'version'))) {
 312         purge_all_caches();
 313         redirect(new moodle_url($PAGE->url), 'Config cache inconsistency detected, resetting caches...');
 314     }
 315
 316     if (!$cache && $version > $CFG->version && !$outagelessupgrade) {  // Upgrade.
 317
 318         $PAGE->set_url(new moodle_url($PAGE->url, array(
 319             'confirmupgrade' => $confirmupgrade,
 320             'confirmrelease' => $confirmrelease,
 321             'confirmplugincheck' => $confirmplugins,
 322         )));
 323
 324         check_upgrade_key($upgradekeyhash);
 325
 326         // Warning about upgrading a test site.
 327         $testsite = false;
 328         if (defined('BEHAT_SITE_RUNNING')) {
 329             $testsite = 'behat';
 330         }
 331
 332         if (isset($CFG->themerev)) {
 333             // Store the themerev to restore after purging caches.
 334             $themerev = $CFG->themerev;
 335         }
 336
 337         // We purge all of MUC's caches here.
 338         // Caches are disabled for upgrade by CACHE_DISABLE_ALL so we must set the first arg to true.
 339         // This ensures a real config object is loaded and the stores will be purged.
 340         // This is the only way we can purge custom caches such as memcache or APC.
 341         // Note: all other calls to caches will still used the disabled API.
 342         cache_helper::purge_all(true);
 343         // We then purge the regular caches.
 344         purge_all_caches();
 345
 346         if (isset($themerev)) {
 347             // Restore the themerev.
 348             set_config('themerev', $themerev);
 349         }
 350
 351         $output = $PAGE->get_renderer('core', 'admin');
 352
 353         if (upgrade_stale_php_files_present()) {
 354             $PAGE->set_title($stradministration);
 355             $PAGE->set_cacheable(false);
 356
 357             echo $output->upgrade_stale_php_files_page();
 358             die();
 359         }
 360
 361         if (empty($confirmupgrade)) {
 362             $a = new stdClass();
 363             $a->oldversion = "$CFG->release (".sprintf('%.2f', $CFG->version).")";
 364             $a->newversion = "$release (".sprintf('%.2f', $version).")";
 365             $strdatabasechecking = get_string('databasechecking', '', $a);
 366
 367             $PAGE->set_title($stradministration);
 368             $PAGE->set_heading($strdatabasechecking);
 369             $PAGE->set_cacheable(false);
 370
 371             echo $output->upgrade_confirm_page($a->newversion, $maturity, $testsite);
 372             die();
 373
 374         } else if (empty($confirmrelease)) {
 375             require_once($CFG->libdir.'/environmentlib.php');
 376             list($envstatus, $environmentresults) = check_moodle_environment($release, ENV_SELECT_RELEASE);
 377             $strcurrentrelease = get_string('currentrelease');
 378
 379             $PAGE->navbar->add($strcurrentrelease);
 380             $PAGE->set_title($strcurrentrelease);
 381             $PAGE->set_heading($strcurrentrelease);
 382             $PAGE->set_cacheable(false);
 383
 384             echo $output->upgrade_environment_page($release, $envstatus, $environmentresults);
 385             die();
 386
 387         } else if (empty($confirmplugins)) {
 388             $strplugincheck = get_string('plugincheck');
 389
 390             $PAGE->navbar->add($strplugincheck);
 391             $PAGE->set_title($strplugincheck);
 392             $PAGE->set_heading($strplugincheck);
 393             $PAGE->set_cacheable(false);
 394
 395             $pluginman = core_plugin_manager::instance();
 396
 397             // Check for available updates.
 398             if ($fetchupdates) {
 399                 // No sesskey support guaranteed here, because sessions might not work yet.
 400                 $updateschecker = \core\update\checker::instance();
 401                 if ($updateschecker->enabled()) {
 402                     $updateschecker->fetch();
 403                 }
 404                 redirect($PAGE->url);
 405             }
 406
 407             // Cancel all plugin installations.
 408             if ($abortinstallx) {
 409                 // No sesskey support guaranteed here, because sessions might not work yet.
 410                 $abortables = $pluginman->list_cancellable_installations();
 411                 if ($abortables) {
 412                     if ($confirmabortinstall) {
 413                         foreach ($abortables as $plugin) {
 414                             $pluginman->cancel_plugin_installation($plugin->component);
 415                         }
 416                         redirect($PAGE->url);
 417                     } else {
 418                         $continue = new moodle_url($PAGE->url, ['abortinstallx' => $abortinstallx, 'confirmabortinstall' => 1]);
 419                         echo $output->upgrade_confirm_abort_install_page($abortables, $continue);
 420                         die();
 421                     }
 422                 }
 423                 redirect($PAGE->url);
 424             }
 425
 426             // Cancel single plugin installation.
 427             if ($abortinstall) {
 428                 // No sesskey support guaranteed here, because sessions might not work yet.
 429                 if ($confirmabortinstall) {
 430                     $pluginman->cancel_plugin_installation($abortinstall);
 431                     redirect($PAGE->url);
 432                 } else {
 433                     $continue = new moodle_url($PAGE->url, array('abortinstall' => $abortinstall, 'confirmabortinstall' => 1));
 434                     $abortable = $pluginman->get_plugin_info($abortinstall);
 435                     if ($pluginman->can_cancel_plugin_installation($abortable)) {
 436                         echo $output->upgrade_confirm_abort_install_page(array($abortable), $continue);
 437                         die();
 438                     }
 439                     redirect($PAGE->url);
 440                 }
 441             }
 442
 443             // Cancel all plugins upgrades (that is, restore archived versions).
 444             if ($abortupgradex) {
 445                 // No sesskey support guaranteed here, because sessions might not work yet.
 446                 $restorable = $pluginman->list_restorable_archives();
 447                 if ($restorable) {
 448                     upgrade_install_plugins($restorable, $confirmabortupgrade,
 449                         get_string('cancelupgradehead', 'core_plugin'),
 450                         new moodle_url($PAGE->url, array('abortupgradex' => 1, 'confirmabortupgrade' => 1))
 451                     );
 452                 }
 453                 redirect($PAGE->url);
 454             }
 455
 456             // Cancel single plugin upgrade (that is, install the archived version).
 457             if ($abortupgrade) {
 458                 // No sesskey support guaranteed here, because sessions might not work yet.
 459                 $restorable = $pluginman->list_restorable_archives();
 460                 if (isset($restorable[$abortupgrade])) {
 461                     $restorable = array($restorable[$abortupgrade]);
 462                     upgrade_install_plugins($restorable, $confirmabortupgrade,
 463                         get_string('cancelupgradehead', 'core_plugin'),
 464                         new moodle_url($PAGE->url, array('abortupgrade' => $abortupgrade, 'confirmabortupgrade' => 1))
 465                     );
 466                 }
 467                 redirect($PAGE->url);
 468             }
 469
 470             // Install all available missing dependencies.
 471             if ($installdepx) {
 472                 // No sesskey support guaranteed here, because sessions might not work yet.
 473                 $installable = $pluginman->filter_installable($pluginman->missing_dependencies(true));
 474                 upgrade_install_plugins($installable, $confirminstalldep,
 475                     get_string('dependencyinstallhead', 'core_plugin'),
 476                     new moodle_url($PAGE->url, array('installdepx' => 1, 'confirminstalldep' => 1))
 477                 );
 478             }
 479
 480             // Install single available missing dependency.
 481             if ($installdep) {
 482                 // No sesskey support guaranteed here, because sessions might not work yet.
 483                 $installable = $pluginman->filter_installable($pluginman->missing_dependencies(true));
 484                 if (!empty($installable[$installdep])) {
 485                     $installable = array($installable[$installdep]);
 486                     upgrade_install_plugins($installable, $confirminstalldep,
 487                         get_string('dependencyinstallhead', 'core_plugin'),
 488                         new moodle_url($PAGE->url, array('installdep' => $installdep, 'confirminstalldep' => 1))
 489                     );
 490                 }
 491             }
 492
 493             // Install all available updates.
 494             if ($installupdatex) {
 495                 // No sesskey support guaranteed here, because sessions might not work yet.
 496                 $installable = $pluginman->filter_installable($pluginman->available_updates());
 497                 upgrade_install_plugins($installable, $confirminstallupdate,
 498                     get_string('updateavailableinstallallhead', 'core_admin'),
 499                     new moodle_url($PAGE->url, array('installupdatex' => 1, 'confirminstallupdate' => 1))
 500                 );
 501             }
 502
 503             // Install single available update.
 504             if ($installupdate and $installupdateversion) {
 505                 // No sesskey support guaranteed here, because sessions might not work yet.
 506                 if ($pluginman->is_remote_plugin_installable($installupdate, $installupdateversion)) {
 507                     $installable = array($pluginman->get_remote_plugin_info($installupdate, $installupdateversion, true));
 508                     upgrade_install_plugins($installable, $confirminstallupdate,
 509                         get_string('updateavailableinstallallhead', 'core_admin'),
 510                         new moodle_url($PAGE->url, array('installupdate' => $installupdate,
 511                             'installupdateversion' => $installupdateversion, 'confirminstallupdate' => 1)
 512                         )
 513                     );
 514                 }
 515             }
 516
 517             echo $output->upgrade_plugin_check_page(core_plugin_manager::instance(), \core\update\checker::instance(),
 518                     $version, $showallplugins, $PAGE->url, new moodle_url($PAGE->url, array('confirmplugincheck' => 1)));
 519             die();
 520
 521         } else {
 522             // Always verify plugin dependencies!
 523             $failed = array();
 524             if (!core_plugin_manager::instance()->all_plugins_ok($version, $failed, $CFG->branch)) {
 525                 echo $output->unsatisfied_dependencies_page($version, $failed, new moodle_url($PAGE->url,
 526                     array('confirmplugincheck' => 0)));
 527                 die();
 528             }
 529             unset($failed);
 530
 531             // Launch main upgrade.
 532             upgrade_core($version, true);
 533         }
 534     } else if ($version < $CFG->version) {
 535         // Better stop here, we can not continue with plugin upgrades or anything else.
 536         throw new moodle_exception('downgradedcore', 'error', new moodle_url('/admin/'));
 537     }
 538
 539     // Updated human-readable release version if necessary.
 540     if (!$cache && $release <> $CFG->release ) {  // Update the release version.
 541         set_config('release', $release);
 542     }
 543
 544     if (!$cache && $branch <> $CFG->branch) {  // Update the branch.
 545         set_config('branch', $branch);
 546     }
 547
 548     if (!$cache && moodle_needs_upgrading()) {
 549
 550         $PAGE->set_url(new moodle_url($PAGE->url, array(
 551             'confirmrelease' => $confirmrelease,
 552             'confirmplugincheck' => $confirmplugins,
 553         )));
 554
 555         check_upgrade_key($upgradekeyhash);
 556
 557         if (!$PAGE->headerprinted) {
 558             // Means core upgrade or installation was not already done.
 559
 560             $pluginman = core_plugin_manager::instance();
 561             $output = $PAGE->get_renderer('core', 'admin');
 562
 563             if (empty($confirmrelease)) {
 564                 require_once($CFG->libdir . '/environmentlib.php');
 565
 566                 list($envstatus, $environmentresults) = check_moodle_environment($release, ENV_SELECT_RELEASE);
 567                 $strcurrentrelease = get_string('currentrelease');
 568
 569                 $PAGE->navbar->add($strcurrentrelease);
 570                 $PAGE->set_title($strcurrentrelease);
 571                 $PAGE->set_heading($strcurrentrelease);
 572                 $PAGE->set_cacheable(false);
 573
 574                 echo $output->upgrade_environment_page($release, $envstatus, $environmentresults);
 575                 die();
 576
 577             } else if (!$confirmplugins) {
 578                 $strplugincheck = get_string('plugincheck');
 579
 580                 $PAGE->navbar->add($strplugincheck);
 581                 $PAGE->set_title($strplugincheck);
 582                 $PAGE->set_heading($strplugincheck);
 583                 $PAGE->set_cacheable(false);
 584
 585                 // Check for available updates.
 586                 if ($fetchupdates) {
 587                     require_sesskey();
 588                     $updateschecker = \core\update\checker::instance();
 589                     if ($updateschecker->enabled()) {
 590                         $updateschecker->fetch();
 591                     }
 592                     redirect($PAGE->url);
 593                 }
 594
 595                 // Cancel all plugin installations.
 596                 if ($abortinstallx) {
 597                     require_sesskey();
 598                     $abortables = $pluginman->list_cancellable_installations();
 599                     if ($abortables) {
 600                         if ($confirmabortinstall) {
 601                             foreach ($abortables as $plugin) {
 602                                 $pluginman->cancel_plugin_installation($plugin->component);
 603                             }
 604                             redirect($PAGE->url);
 605                         } else {
 606                             $continue = new moodle_url($PAGE->url, array('abortinstallx' => $abortinstallx,
 607                                 'confirmabortinstall' => 1));
 608                             echo $output->upgrade_confirm_abort_install_page($abortables, $continue);
 609                             die();
 610                         }
 611                     }
 612                     redirect($PAGE->url);
 613                 }
 614
 615                 // Cancel single plugin installation.
 616                 if ($abortinstall) {
 617                     require_sesskey();
 618                     if ($confirmabortinstall) {
 619                         $pluginman->cancel_plugin_installation($abortinstall);
 620                         redirect($PAGE->url);
 621                     } else {
 622                         $continue = new moodle_url($PAGE->url, array('abortinstall' => $abortinstall, 'confirmabortinstall' => 1));
 623                         $abortable = $pluginman->get_plugin_info($abortinstall);
 624                         if ($pluginman->can_cancel_plugin_installation($abortable)) {
 625                             echo $output->upgrade_confirm_abort_install_page(array($abortable), $continue);
 626                             die();
 627                         }
 628                         redirect($PAGE->url);
 629                     }
 630                 }
 631
 632                 // Cancel all plugins upgrades (that is, restore archived versions).
 633                 if ($abortupgradex) {
 634                     require_sesskey();
 635                     $restorable = $pluginman->list_restorable_archives();
 636                     if ($restorable) {
 637                         upgrade_install_plugins($restorable, $confirmabortupgrade,
 638                             get_string('cancelupgradehead', 'core_plugin'),
 639                             new moodle_url($PAGE->url, array('abortupgradex' => 1, 'confirmabortupgrade' => 1))
 640                         );
 641                     }
 642                     redirect($PAGE->url);
 643                 }
 644
 645                 // Cancel single plugin upgrade (that is, install the archived version).
 646                 if ($abortupgrade) {
 647                     require_sesskey();
 648                     $restorable = $pluginman->list_restorable_archives();
 649                     if (isset($restorable[$abortupgrade])) {
 650                         $restorable = array($restorable[$abortupgrade]);
 651                         upgrade_install_plugins($restorable, $confirmabortupgrade,
 652                             get_string('cancelupgradehead', 'core_plugin'),
 653                             new moodle_url($PAGE->url, array('abortupgrade' => $abortupgrade, 'confirmabortupgrade' => 1))
 654                         );
 655                     }
 656                     redirect($PAGE->url);
 657                 }
 658
 659                 // Install all available missing dependencies.
 660                 if ($installdepx) {
 661                     require_sesskey();
 662                     $installable = $pluginman->filter_installable($pluginman->missing_dependencies(true));
 663                     upgrade_install_plugins($installable, $confirminstalldep,
 664                         get_string('dependencyinstallhead', 'core_plugin'),
 665                         new moodle_url($PAGE->url, array('installdepx' => 1, 'confirminstalldep' => 1))
 666                     );
 667                 }
 668
 669                 // Install single available missing dependency.
 670                 if ($installdep) {
 671                     require_sesskey();
 672                     $installable = $pluginman->filter_installable($pluginman->missing_dependencies(true));
 673                     if (!empty($installable[$installdep])) {
 674                         $installable = array($installable[$installdep]);
 675                         upgrade_install_plugins($installable, $confirminstalldep,
 676                             get_string('dependencyinstallhead', 'core_plugin'),
 677                             new moodle_url($PAGE->url, array('installdep' => $installdep, 'confirminstalldep' => 1))
 678                         );
 679                     }
 680                 }
 681
 682                 // Install all available updates.
 683                 if ($installupdatex) {
 684                     require_sesskey();
 685                     $installable = $pluginman->filter_installable($pluginman->available_updates());
 686                     upgrade_install_plugins($installable, $confirminstallupdate,
 687                         get_string('updateavailableinstallallhead', 'core_admin'),
 688                         new moodle_url($PAGE->url, array('installupdatex' => 1, 'confirminstallupdate' => 1))
 689                     );
 690                 }
 691
 692                 // Install single available update.
 693                 if ($installupdate && $installupdateversion) {
 694                     require_sesskey();
 695                     if ($pluginman->is_remote_plugin_installable($installupdate, $installupdateversion)) {
 696                         $installable = array($pluginman->get_remote_plugin_info($installupdate, $installupdateversion, true));
 697                         upgrade_install_plugins($installable, $confirminstallupdate,
 698                             get_string('updateavailableinstallallhead', 'core_admin'),
 699                             new moodle_url($PAGE->url, array('installupdate' => $installupdate,
 700                                 'installupdateversion' => $installupdateversion, 'confirminstallupdate' => 1)
 701                             )
 702                         );
 703                     }
 704                 }
 705
 706                 // Show plugins info.
 707                 echo $output->upgrade_plugin_check_page($pluginman, \core\update\checker::instance(),
 708                         $version, $showallplugins,
 709                         new moodle_url($PAGE->url),
 710                         new moodle_url($PAGE->url, array('confirmplugincheck' => 1, 'cache' => 0)));
 711                 die();
 712             }
 713
 714             // Make sure plugin dependencies are always checked.
 715             $failed = array();
 716             if (!$pluginman->all_plugins_ok($version, $failed, $CFG->branch)) {
 717                 $output = $PAGE->get_renderer('core', 'admin');
 718                 echo $output->unsatisfied_dependencies_page($version, $failed, new moodle_url($PAGE->url,
 719                     array('confirmplugincheck' => 0)));
 720                 die();
 721             }
 722             unset($failed);
 723         }
 724
 725         // Install/upgrade all plugins and other parts.
 726         upgrade_noncore(true);
 727     }
 728
 729     // If this is the first install, indicate that this site is fully configured,
 730     // Except the admin password.
 731     if (during_initial_install()) {
 732         set_config('rolesactive', 1); // After this, during_initial_install will return false.
 733         set_config('adminsetuppending', 1);
 734         set_config('registrationpending', 1); // Remind to register site after all other setup is finished.
 735
 736         // Apply default preset, if it is defined in $CFG and has a valid value.
 737         if (!empty($CFG->setsitepresetduringinstall)) {
 738             \core_adminpresets\helper::change_default_preset($CFG->setsitepresetduringinstall);
 739         }
 740
 741         // We need this redirect to setup proper session.
 742         upgrade_finished("index.php?sessionstarted=1&amp;lang=$CFG->lang");
 743     }
 744
 745     // Make sure admin user is created - this is the last step,
 746     // We need session to be working properly in order to edit admin account.
 747     if (!empty($CFG->adminsetuppending)) {
 748         $sessionstarted = optional_param('sessionstarted', 0, PARAM_BOOL);
 749         if (!$sessionstarted) {
 750             redirect("index.php?sessionstarted=1&lang=$CFG->lang");
 751         } else {
 752             $sessionverify = optional_param('sessionverify', 0, PARAM_BOOL);
 753             if (!$sessionverify) {
 754                 $SESSION->sessionverify = 1;
 755                 redirect("index.php?sessionstarted=1&sessionverify=1&lang=$CFG->lang");
 756             } else {
 757                 if (empty($SESSION->sessionverify)) {
 758                     throw new \moodle_exception('installsessionerror', 'admin', "index.php?sessionstarted=1&lang=$CFG->lang");
 759                 }
 760                 unset($SESSION->sessionverify);
 761             }
 762         }
 763
 764         // Cleanup SESSION to make sure other code does not complain in the future.
 765         unset($SESSION->has_timed_out);
 766         unset($SESSION->wantsurl);
 767
 768         // At this stage there can be only one admin unless more were added by install,
 769         // Users may change username, so do not rely on that.
 770         $adminids = explode(',', $CFG->siteadmins);
 771         $adminuser = get_complete_user_data('id', reset($adminids));
 772
 773         if ($adminuser->password === 'adminsetuppending') {
 774             // Prevent installation hijacking.
 775             if ($adminuser->lastip !== getremoteaddr()) {
 776                 throw new \moodle_exception('installhijacked', 'admin');
 777             }
 778             // Login user and let him set password and admin details.
 779             $adminuser->newadminuser = 1;
 780             complete_user_login($adminuser);
 781             redirect("$CFG->wwwroot/user/editadvanced.php?id=$adminuser->id"); // Edit thyself.
 782
 783         } else {
 784             unset_config('adminsetuppending');
 785         }
 786
 787     } else {
 788         // Just make sure upgrade logging is properly terminated.
 789         upgrade_finished('upgradesettings.php');
 790     }
 791 }
 792
 793 if (has_capability('moodle/site:config', context_system::instance())) {
 794     if ($fetchupdates) {
 795         require_sesskey();
 796         $updateschecker = \core\update\checker::instance();
 797         if ($updateschecker->enabled()) {
 798             $updateschecker->fetch();
 799         }
 800         redirect(new moodle_url('/admin/index.php', array('cache' => 0)));
 801     }
 802 }
 803
 804 // Now we can be sure everything was upgraded and caches work fine,
 805 // redirect if necessary to make sure caching is enabled.
 806 if (!$cache) {
 807     redirect(new moodle_url('/admin/index.php', array('cache' => 1)));
 808 }
 809
 810 // Check for valid admin user - no guest autologin
 811 require_login(0, false);
 812 if (isguestuser()) {
 813     // Login as real user!
 814     $SESSION->wantsurl = (string)new moodle_url('/admin/index.php');
 815     redirect(get_login_url());
 816 }
 817 $context = context_system::instance();
 818
 819 if (!has_capability('moodle/site:config', $context)) {
 820     // Do not throw exception display an empty page with administration menu if visible for current user.
 821     $PAGE->set_title(get_string('home'));
 822     $PAGE->set_heading($SITE->fullname);
 823     echo $OUTPUT->header();
 824     echo $OUTPUT->footer();
 825     exit;
 826 }
 827
 828 // check that site is properly customized
 829 $site = get_site();
 830 if (empty($site->shortname)) {
 831     // probably new installation - lets return to frontpage after this step
 832     // remove settings that we want uninitialised
 833     unset_config('registerauth');
 834     unset_config('timezone'); // Force admin to select timezone!
 835     redirect('upgradesettings.php?return=site');
 836 }
 837
 838 // setup critical warnings before printing admin tree block
 839 $insecuredataroot = is_dataroot_insecure(true);
 840 $SESSION->admin_critical_warning = ($insecuredataroot==INSECURE_DATAROOT_ERROR);
 841
 842 $adminroot = admin_get_root();
 843 $PAGE->set_primary_active_tab('siteadminnode');
 844
 845 // Check if there are any new admin settings which have still yet to be set
 846 if (any_new_admin_settings($adminroot)) {
 847     redirect('upgradesettings.php');
 848 }
 849
 850 // Return to original page that started the plugin uninstallation if necessary.
 851 if (isset($SESSION->pluginuninstallreturn)) {
 852     $return = $SESSION->pluginuninstallreturn;
 853     unset($SESSION->pluginuninstallreturn);
 854     if ($return) {
 855         redirect($return);
 856     }
 857 }
 858
 859 // If site registration needs updating, redirect.
 860 \core\hub\registration::registration_reminder('/admin/index.php');
 861
 862 // Everything should now be set up, and the user is an admin
 863
 864 // Print default admin page with notifications.
 865 $errorsdisplayed = defined('WARN_DISPLAY_ERRORS_ENABLED');
 866
 867 $lastcron = get_config('tool_task', 'lastcronstart');
 868 $cronoverdue = ($lastcron < time() - 3600 * 24);
 869 $lastcroninterval = get_config('tool_task', 'lastcroninterval');
 870
 871 $expectedfrequency = $CFG->expectedcronfrequency ?? MINSECS;
 872 $croninfrequent = !$cronoverdue && ($lastcroninterval > ($expectedfrequency + MINSECS) || $lastcron < time() - $expectedfrequency);
 873 $dbproblems = $DB->diagnose();
 874 $maintenancemode = !empty($CFG->maintenance_enabled);
 875
 876 // Available updates for Moodle core.
 877 $updateschecker = \core\update\checker::instance();
 878 $availableupdates = array();
 879 $availableupdatesfetch = null;
 880
 881 if ($updateschecker->enabled()) {
 882     // Only compute the update information when it is going to be displayed to the user.
 883     $availableupdates['core'] = $updateschecker->get_update_info('core',
 884         array('minmaturity' => $CFG->updateminmaturity, 'notifybuilds' => $CFG->updatenotifybuilds));
 885
 886     // Available updates for contributed plugins
 887     $pluginman = core_plugin_manager::instance();
 888     foreach ($pluginman->get_plugins() as $plugintype => $plugintypeinstances) {
 889         foreach ($plugintypeinstances as $pluginname => $plugininfo) {
 890             $pluginavailableupdates = $plugininfo->available_updates();
 891             if (!empty($pluginavailableupdates)) {
 892                 foreach ($pluginavailableupdates as $pluginavailableupdate) {
 893                     if (!isset($availableupdates[$plugintype.'_'.$pluginname])) {
 894                         $availableupdates[$plugintype.'_'.$pluginname] = array();
 895                     }
 896                     $availableupdates[$plugintype.'_'.$pluginname][] = $pluginavailableupdate;
 897                 }
 898             }
 899         }
 900     }
 901
 902     // The timestamp of the most recent check for available updates
 903     $availableupdatesfetch = $updateschecker->get_last_timefetched();
 904 }
 905
 906 $buggyiconvnomb = (!function_exists('mb_convert_encoding') and @iconv('UTF-8', 'UTF-8//IGNORE', '100'.chr(130).'€') !== '100€');
 907 //check if the site is registered on Moodle.org
 908 $registered = \core\hub\registration::is_registered();
 909 // Check if there are any cache warnings.
 910 $cachewarnings = cache_helper::warnings();
 911 // Check if there are events 1 API handlers.
 912 $eventshandlers = $DB->get_records_sql('SELECT DISTINCT component FROM {events_handlers}');
 913 $themedesignermode = !empty($CFG->themedesignermode);
 914 $mobileconfigured = !empty($CFG->enablemobilewebservice);
 915 $invalidforgottenpasswordurl = !empty($CFG->forgottenpasswordurl) && empty(clean_param($CFG->forgottenpasswordurl, PARAM_URL));
 916
 917 // Check if a directory with development libraries exists.
 918 if (empty($CFG->disabledevlibdirscheck) && (is_dir($CFG->dirroot.'/vendor') || is_dir($CFG->dirroot.'/node_modules'))) {
 919     $devlibdir = true;
 920 } else {
 921     $devlibdir = false;
 922 }
 923 // Check if the site is being foced onto ssl.
 924 $overridetossl = !empty($CFG->overridetossl);
 925
 926 // Check if moodle campaign content setting is enabled or not.
 927 $showcampaigncontent = !isset($CFG->showcampaigncontent) || $CFG->showcampaigncontent;
 928
 929 // Encourage admins to enable the user feedback feature if it is not enabled already.
 930 $showfeedbackencouragement = empty($CFG->enableuserfeedback);
 931
 932 // Check if the service and support content setting is enabled or not.
 933 $servicesandsupportcontent = !isset($CFG->showservicesandsupportcontent) || $CFG->showservicesandsupportcontent;
 934
 935 // Check whether the XML-RPC protocol is enabled or not.
 936 require_once($CFG->libdir . '/environmentlib.php');
 937 $result = new environment_results('custom_checks');
 938 $result = check_xmlrpc_usage($result);
 939 $xmlrpcwarning = !is_null($result) ? get_string($result->getFeedbackStr(), 'admin') : '';
 940
 941 admin_externalpage_setup('adminnotifications');
 942
 943 $output = $PAGE->get_renderer('core', 'admin');
 944
 945 echo $output->admin_notifications_page($maturity, $insecuredataroot, $errorsdisplayed, $cronoverdue, $dbproblems,
 946                                        $maintenancemode, $availableupdates, $availableupdatesfetch, $buggyiconvnomb,
 947                                        $registered, $cachewarnings, $eventshandlers, $themedesignermode, $devlibdir,
 948                                        $mobileconfigured, $overridetossl, $invalidforgottenpasswordurl, $croninfrequent,
 949                                        $showcampaigncontent, $showfeedbackencouragement, $servicesandsupportcontent,
 950                                        $xmlrpcwarning);