install.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  * This script creates config.php file during installation.
  20  *
  21  * @package    core
  22  * @subpackage install
  23  * @copyright  2009 Petr Skoda (http://skodak.org)
  24  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  25  */
  26
  27 if (isset($_REQUEST['lang'])) {
  28     $lang = preg_replace('/[^A-Za-z0-9_-]/i', '', $_REQUEST['lang']);
  29 } else {
  30     $lang = 'en';
  31 }
  32
  33 if (isset($_REQUEST['admin'])) {
  34     $admin = preg_replace('/[^A-Za-z0-9_-]/i', '', $_REQUEST['admin']);
  35 } else {
  36     $admin = 'admin';
  37 }
  38
  39 // If config.php exists we just created config.php and need to redirect to continue installation
  40 $configfile = './config.php';
  41 if (file_exists($configfile)) {
  42     header("Location: $admin/index.php?lang=$lang");
  43     die;
  44 }
  45
  46 define('CLI_SCRIPT', false); // prevents some warnings later
  47 define('AJAX_SCRIPT', false); // prevents some warnings later
  48 define('CACHE_DISABLE_ALL', true); // Disables caching.. just in case.
  49 define('PHPUNIT_TEST', false);
  50 define('IGNORE_COMPONENT_CACHE', true);
  51 define('MDL_PERF_TEST', false);
  52 define('MDL_PERF', false);
  53 define('MDL_PERFTOFOOT', false);
  54 define('MDL_PERFTOLOG', false);
  55 define('MDL_PERFINC', false);
  56
  57 // Servers should define a default timezone in php.ini, but if they don't then make sure something is defined.
  58 if (!function_exists('date_default_timezone_set') or !function_exists('date_default_timezone_get')) {
  59     echo("Timezone functions are not available.");
  60     die;
  61 }
  62 date_default_timezone_set(@date_default_timezone_get());
  63
  64 // make sure PHP errors are displayed - helps with diagnosing of problems
  65 @error_reporting(E_ALL);
  66 @ini_set('display_errors', '1');
  67
  68 // Check that PHP is of a sufficient version as soon as possible.
  69 require_once(__DIR__.'/lib/phpminimumversionlib.php');
  70 moodle_require_minimum_php_version();
  71
  72 // make sure iconv is available and actually works
  73 if (!function_exists('iconv')) {
  74     // this should not happen, this must be very borked install
  75     echo 'Moodle requires the iconv PHP extension. Please install or enable the iconv extension.';
  76     die();
  77 }
  78
  79 if (PHP_INT_SIZE > 4) {
  80     // most probably 64bit PHP - we need a lot more memory
  81     $minrequiredmemory = '70M';
  82 } else {
  83     // 32bit PHP
  84     $minrequiredmemory = '40M';
  85 }
  86 // increase or decrease available memory - we need to make sure moodle
  87 // installs even with low memory, otherwise developers would overlook
  88 // sudden increases of memory needs ;-)
  89 @ini_set('memory_limit', $minrequiredmemory);
  90
  91 /** Used by library scripts to check they are being called by Moodle */
  92 define('MOODLE_INTERNAL', true);
  93
  94 require_once(__DIR__.'/lib/classes/component.php');
  95 require_once(__DIR__.'/lib/installlib.php');
  96
  97 // TODO: add lang detection here if empty $_REQUEST['lang']
  98
  99 // distro specific customisation
 100 $distro = null;
 101 if (file_exists('install/distrolib.php')) {
 102     require_once('install/distrolib.php');
 103     if (function_exists('distro_get_config')) {
 104         $distro = distro_get_config();
 105     }
 106 }
 107
 108 $config = new stdClass();
 109 $config->lang = $lang;
 110
 111 if (!empty($_POST)) {
 112     $config->stage = (int)$_POST['stage'];
 113
 114     if (isset($_POST['previous'])) {
 115         $config->stage--;
 116         if (INSTALL_DATABASETYPE and !empty($distro->dbtype)) {
 117             $config->stage--;
 118         }
 119         if ($config->stage == INSTALL_ENVIRONMENT or $config->stage == INSTALL_DOWNLOADLANG) {
 120             $config->stage--;
 121         }
 122     } else if (isset($_POST['next'])) {
 123         $config->stage++;
 124     }
 125
 126     $config->dbtype   = trim($_POST['dbtype']);
 127     $config->dbhost   = trim($_POST['dbhost']);
 128     $config->dbuser   = trim($_POST['dbuser']);
 129     $config->dbpass   = trim($_POST['dbpass']);
 130     $config->dbname   = trim($_POST['dbname']);
 131     $config->prefix   = trim($_POST['prefix']);
 132     $config->dbport   = (int)trim($_POST['dbport']);
 133     $config->dbsocket = trim($_POST['dbsocket']);
 134
 135     if ($config->dbport <= 0) {
 136         $config->dbport = '';
 137     }
 138
 139     $config->admin    = empty($_POST['admin']) ? 'admin' : trim($_POST['admin']);
 140
 141     $config->dataroot = trim($_POST['dataroot']);
 142
 143 } else {
 144     $config->stage    = INSTALL_WELCOME;
 145
 146     $config->dbtype   = empty($distro->dbtype) ? '' : $distro->dbtype; // let distro skip dbtype selection
 147     $config->dbhost   = empty($distro->dbhost) ? 'localhost' : $distro->dbhost; // let distros set dbhost
 148     $config->dbuser   = empty($distro->dbuser) ? '' : $distro->dbuser; // let distros set dbuser
 149     $config->dbpass   = '';
 150     $config->dbname   = 'moodle';
 151     $config->prefix   = 'mdl_';
 152     $config->dbport   = empty($distro->dbport) ? '' : $distro->dbport;
 153     $config->dbsocket = empty($distro->dbsocket) ? '' : $distro->dbsocket;
 154
 155     $config->admin    = 'admin';
 156
 157     $config->dataroot = empty($distro->dataroot) ? null  : $distro->dataroot; // initialised later after including libs or by distro
 158 }
 159
 160 // Fake some settings so that we can use selected functions from moodlelib.php, weblib.php and filelib.php.
 161 global $CFG;
 162 $CFG = new stdClass();
 163 $CFG->lang                 = $config->lang;
 164 $CFG->dirroot              = __DIR__;
 165 $CFG->libdir               = "$CFG->dirroot/lib";
 166 $CFG->wwwroot              = install_guess_wwwroot(); // can not be changed - ppl must use the real address when installing
 167 $CFG->httpswwwroot         = $CFG->wwwroot;
 168 $CFG->dataroot             = $config->dataroot;
 169 $CFG->tempdir              = $CFG->dataroot.'/temp';
 170 $CFG->backuptempdir        = $CFG->tempdir.'/backup';
 171 $CFG->cachedir             = $CFG->dataroot.'/cache';
 172 $CFG->localcachedir        = $CFG->dataroot.'/localcache';
 173 $CFG->admin                = $config->admin;
 174 $CFG->docroot              = 'https://docs.moodle.org';
 175 $CFG->langotherroot        = $CFG->dataroot.'/lang';
 176 $CFG->langlocalroot        = $CFG->dataroot.'/lang';
 177 $CFG->directorypermissions = isset($distro->directorypermissions) ? $distro->directorypermissions : 00777; // let distros set dir permissions
 178 $CFG->filepermissions      = ($CFG->directorypermissions & 0666);
 179 $CFG->umaskpermissions     = (($CFG->directorypermissions & 0777) ^ 0777);
 180 $CFG->running_installer    = true;
 181 $CFG->early_install_lang   = true;
 182 $CFG->ostype               = (stristr(PHP_OS, 'win') && !stristr(PHP_OS, 'darwin')) ? 'WINDOWS' : 'UNIX';
 183 $CFG->debug                = (E_ALL | E_STRICT);
 184 $CFG->debugdisplay         = true;
 185 $CFG->debugdeveloper       = true;
 186
 187 // Require all needed libs
 188 require_once($CFG->libdir.'/setuplib.php');
 189
 190 // we need to make sure we have enough memory to load all libraries
 191 $memlimit = @ini_get('memory_limit');
 192 if (!empty($memlimit) and $memlimit != -1) {
 193     if (get_real_size($memlimit) < get_real_size($minrequiredmemory)) {
 194         // do NOT localise - lang strings would not work here and we CAN not move it to later place
 195         echo "Moodle requires at least {$minrequiredmemory}B of PHP memory.<br />";
 196         echo "Please contact server administrator to fix PHP.ini memory settings.";
 197         die;
 198     }
 199 }
 200
 201 // Continue with lib loading
 202 require_once($CFG->libdir.'/classes/text.php');
 203 require_once($CFG->libdir.'/classes/string_manager.php');
 204 require_once($CFG->libdir.'/classes/string_manager_install.php');
 205 require_once($CFG->libdir.'/classes/string_manager_standard.php');
 206 require_once($CFG->libdir.'/weblib.php');
 207 require_once($CFG->libdir.'/outputlib.php');
 208 require_once($CFG->libdir.'/dmllib.php');
 209 require_once($CFG->libdir.'/moodlelib.php');
 210 require_once($CFG->libdir .'/pagelib.php');
 211 require_once($CFG->libdir.'/deprecatedlib.php');
 212 require_once($CFG->libdir.'/adminlib.php');
 213 require_once($CFG->libdir.'/environmentlib.php');
 214 require_once($CFG->libdir.'/componentlib.class.php');
 215 require_once($CFG->dirroot.'/cache/lib.php');
 216
 217 //point pear include path to moodles lib/pear so that includes and requires will search there for files before anywhere else
 218 //the problem is that we need specific version of quickforms and hacked excel files :-(
 219 ini_set('include_path', $CFG->libdir.'/pear' . PATH_SEPARATOR . ini_get('include_path'));
 220
 221 // Register our classloader, in theory somebody might want to replace it to load other hacked core classes.
 222 // Required because the database checks below lead to session interaction which is going to lead us to requiring autoloaded classes.
 223 if (defined('COMPONENT_CLASSLOADER')) {
 224     spl_autoload_register(COMPONENT_CLASSLOADER);
 225 } else {
 226     spl_autoload_register('core_component::classloader');
 227 }
 228
 229 require('version.php');
 230 $CFG->target_release = $release;
 231
 232 \core\session\manager::init_empty_session();
 233 global $SESSION;
 234 global $USER;
 235
 236 global $COURSE;
 237 $COURSE = new stdClass();
 238 $COURSE->id = 1;
 239
 240 global $SITE;
 241 $SITE = $COURSE;
 242 define('SITEID', 1);
 243
 244 $hint_dataroot = '';
 245 $hint_admindir = '';
 246 $hint_database = '';
 247
 248 // Are we in help mode?
 249 if (isset($_GET['help'])) {
 250     install_print_help_page($_GET['help']);
 251 }
 252
 253 //first time here? find out suitable dataroot
 254 if (is_null($CFG->dataroot)) {
 255     $CFG->dataroot = __DIR__.'/../moodledata';
 256
 257     $i = 0; //safety check - dirname might return some unexpected results
 258     while(is_dataroot_insecure()) {
 259         $parrent = dirname($CFG->dataroot);
 260         $i++;
 261         if ($parrent == '/' or $parrent == '.' or preg_match('/^[a-z]:\\\?$/i', $parrent) or ($i > 100)) {
 262             $CFG->dataroot = ''; //can not find secure location for dataroot
 263             break;
 264         }
 265         $CFG->dataroot = dirname($parrent).DIRECTORY_SEPARATOR.'moodledata';
 266     }
 267     $config->dataroot = $CFG->dataroot;
 268     $config->stage    = INSTALL_WELCOME;
 269 }
 270
 271 // now let's do the stage work
 272 if ($config->stage < INSTALL_WELCOME) {
 273     $config->stage = INSTALL_WELCOME;
 274 }
 275 if ($config->stage > INSTALL_SAVE) {
 276     $config->stage = INSTALL_SAVE;
 277 }
 278
 279
 280
 281 if ($config->stage == INSTALL_SAVE) {
 282     $CFG->early_install_lang = false;
 283
 284     $database = moodle_database::get_driver_instance($config->dbtype, 'native');
 285     if (!$database->driver_installed()) {
 286         $config->stage = INSTALL_DATABASETYPE;
 287     } else {
 288         if (function_exists('distro_pre_create_db')) { // Hook for distros needing to do something before DB creation
 289             $distro = distro_pre_create_db($database, $config->dbhost, $config->dbuser, $config->dbpass, $config->dbname, $config->prefix, array('dbpersist'=>0, 'dbport'=>$config->dbport, 'dbsocket'=>$config->dbsocket), $distro);
 290         }
 291         $hint_database = install_db_validate($database, $config->dbhost, $config->dbuser, $config->dbpass, $config->dbname, $config->prefix, array('dbpersist'=>0, 'dbport'=>$config->dbport, 'dbsocket'=>$config->dbsocket));
 292
 293         if ($hint_database === '') {
 294             $configphp = install_generate_configphp($database, $CFG);
 295
 296             umask(0137);
 297             if (($fh = @fopen($configfile, 'w')) !== false) {
 298                 fwrite($fh, $configphp);
 299                 fclose($fh);
 300             }
 301
 302             if (file_exists($configfile)) {
 303                 // config created, let's continue!
 304                 redirect("$CFG->wwwroot/$config->admin/index.php?lang=$config->lang");
 305             }
 306
 307             install_print_header($config, 'config.php',
 308                                           get_string('configurationcompletehead', 'install'),
 309                                           get_string('configurationcompletesub', 'install').get_string('configfilenotwritten', 'install'), 'alert-error');
 310             echo '<div class="configphp"><pre>';
 311             echo p($configphp);
 312             echo '</pre></div>';
 313
 314             install_print_footer($config);
 315             die;
 316
 317         } else {
 318             $config->stage = INSTALL_DATABASE;
 319         }
 320     }
 321 }
 322
 323
 324
 325 if ($config->stage == INSTALL_DOWNLOADLANG) {
 326     if (empty($CFG->dataroot)) {
 327         $config->stage = INSTALL_PATHS;
 328
 329     } else if (is_dataroot_insecure()) {
 330         $hint_dataroot = get_string('pathsunsecuredataroot', 'install');
 331         $config->stage = INSTALL_PATHS;
 332
 333     } else if (!file_exists($CFG->dataroot)) {
 334         $a = new stdClass();
 335         $a->parent = dirname($CFG->dataroot);
 336         $a->dataroot = $CFG->dataroot;
 337         if (!is_writable($a->parent)) {
 338             $hint_dataroot = get_string('pathsroparentdataroot', 'install', $a);
 339             $config->stage = INSTALL_PATHS;
 340         } else {
 341             if (!install_init_dataroot($CFG->dataroot, $CFG->directorypermissions)) {
 342                 $hint_dataroot = get_string('pathserrcreatedataroot', 'install', $a);
 343                 $config->stage = INSTALL_PATHS;
 344             }
 345         }
 346
 347     } else if (!install_init_dataroot($CFG->dataroot, $CFG->directorypermissions)) {
 348         $hint_dataroot = get_string('pathserrcreatedataroot', 'install', array('dataroot' => $CFG->dataroot));
 349         $config->stage = INSTALL_PATHS;
 350     }
 351
 352     if (empty($hint_dataroot) and !is_writable($CFG->dataroot)) {
 353         $hint_dataroot = get_string('pathsrodataroot', 'install');
 354         $config->stage = INSTALL_PATHS;
 355     }
 356
 357     if ($config->admin === '' or !file_exists($CFG->dirroot.'/'.$config->admin.'/environment.xml')) {
 358         $hint_admindir = get_string('pathswrongadmindir', 'install');
 359         $config->stage = INSTALL_PATHS;
 360     }
 361 }
 362
 363
 364
 365 if ($config->stage == INSTALL_DOWNLOADLANG) {
 366     // no need to download anything if en lang selected
 367     if ($CFG->lang == 'en') {
 368         $config->stage = INSTALL_DATABASETYPE;
 369     }
 370 }
 371
 372
 373
 374 if ($config->stage == INSTALL_DATABASETYPE) {
 375     // skip db selection if distro package supports only one db
 376     if (!empty($distro->dbtype)) {
 377         $config->stage = INSTALL_DATABASE;
 378     }
 379 }
 380
 381
 382 if ($config->stage == INSTALL_DOWNLOADLANG) {
 383     $downloaderror = '';
 384
 385     // download and install required lang packs, the lang dir has already been created in install_init_dataroot
 386     $installer = new lang_installer($CFG->lang);
 387     $results = $installer->run();
 388     foreach ($results as $langcode => $langstatus) {
 389         if ($langstatus === lang_installer::RESULT_DOWNLOADERROR) {
 390             $a       = new stdClass();
 391             $a->url  = $installer->lang_pack_url($langcode);
 392             $a->dest = $CFG->dataroot.'/lang';
 393             $downloaderror = get_string('remotedownloaderror', 'error', $a);
 394         }
 395     }
 396
 397     if ($downloaderror !== '') {
 398         install_print_header($config, get_string('language'), get_string('langdownloaderror', 'install', $CFG->lang), $downloaderror);
 399         install_print_footer($config);
 400         die;
 401     } else {
 402         if (empty($distro->dbtype)) {
 403             $config->stage = INSTALL_DATABASETYPE;
 404         } else {
 405             $config->stage = INSTALL_DATABASE;
 406         }
 407     }
 408
 409     // switch the string_manager instance to stop using install/lang/
 410     $CFG->early_install_lang = false;
 411     $CFG->langotherroot      = $CFG->dataroot.'/lang';
 412     $CFG->langlocalroot      = $CFG->dataroot.'/lang';
 413     get_string_manager(true);
 414 }
 415
 416
 417 if ($config->stage == INSTALL_DATABASE) {
 418     $CFG->early_install_lang = false;
 419
 420     $database = moodle_database::get_driver_instance($config->dbtype, 'native');
 421
 422     $sub = '<h3>'.$database->get_name().'</h3>'.$database->get_configuration_help();
 423
 424     install_print_header($config, get_string('database', 'install'), get_string('databasehead', 'install'), $sub);
 425
 426     $strdbhost   = get_string('databasehost', 'install');
 427     $strdbname   = get_string('databasename', 'install');
 428     $strdbuser   = get_string('databaseuser', 'install');
 429     $strdbpass   = get_string('databasepass', 'install');
 430     $strprefix   = get_string('dbprefix', 'install');
 431     $strdbport   = get_string('databaseport', 'install');
 432     $strdbsocket = get_string('databasesocket', 'install');
 433
 434     echo '<div class="row mb-4">';
 435
 436     $disabled = empty($distro->dbhost) ? '' : 'disabled="disabled';
 437     echo '<div class="col-md-3 text-md-right pt-1"><label for="id_dbhost">'.$strdbhost.'</label></div>';
 438     echo '<div class="col-md-9" data-fieldtype="text">';
 439     echo '<input id="id_dbhost" name="dbhost" '.$disabled.' type="text" class="form-control text-ltr" value="'.s($config->dbhost).'" size="50" /></div>';
 440     echo '</div>';
 441
 442     echo '<div class="row mb-4">';
 443     echo '<div class="col-md-3 text-md-right pt-1"><label for="id_dbname">'.$strdbname.'</label></div>';
 444     echo '<div class="col-md-9" data-fieldtype="text">';
 445     echo '<input id="id_dbname" name="dbname" type="text" class="form-control text-ltr" value="'.s($config->dbname).'" size="50" /></div>';
 446     echo '</div>';
 447
 448     $disabled = empty($distro->dbuser) ? '' : 'disabled="disabled';
 449     echo '<div class="row mb-4">';
 450     echo '<div class="col-md-3 text-md-right pt-1"><label for="id_dbuser">'.$strdbuser.'</label></div>';
 451     echo '<div class="col-md-9" data-fieldtype="text">';
 452     echo '<input id="id_dbuser" name="dbuser" '.$disabled.' type="text" class="form-control text-ltr" value="'.s($config->dbuser).'" size="50" /></div>';
 453     echo '</div>';
 454
 455     echo '<div class="row mb-4">';
 456     echo '<div class="col-md-3 text-md-right pt-1"><label for="id_dbpass">'.$strdbpass.'</label></div>';
 457     // no password field here, the password may be visible in config.php if we can not write it to disk
 458     echo '<div class="col-md-9" data-fieldtype="text">';
 459     echo '<input id="id_dbpass" name="dbpass" type="text" class="form-control text-ltr" value="'.s($config->dbpass).'" size="50" /></div>';
 460     echo '</div>';
 461
 462     echo '<div class="row mb-4">';
 463     echo '<div class="col-md-3 text-md-right pt-1"><label for="id_prefix">'.$strprefix.'</label></div>';
 464     echo '<div class="col-md-9" data-fieldtype="text">';
 465     echo '<input id="id_prefix" name="prefix" type="text" class="form-control text-ltr" value="'.s($config->prefix).'" size="10" /></div>';
 466     echo '</div>';
 467
 468     echo '<div class="row mb-4">';
 469     echo '<div class="col-md-3 text-md-right pt-1"><label for="id_prefix">'.$strdbport.'</label></div>';
 470     echo '<div class="col-md-9" data-fieldtype="text">';
 471     echo '<input id="id_dbport" name="dbport" type="text" class="form-control text-ltr" value="'.s($config->dbport).'" size="10" /></div>';
 472     echo '</div>';
 473
 474     if (!(stristr(PHP_OS, 'win') && !stristr(PHP_OS, 'darwin'))) {
 475         echo '<div class="row mb-4">';
 476         echo '<div class="col-md-3 text-md-right pt-1"><label for="id_dbsocket">'.$strdbsocket.'</label></div>';
 477         echo '<div class="col-md-9" data-fieldtype="text">';
 478         echo '<input id="id_dbsocket" name="dbsocket" type="text" class="form-control text-ltr" value="'.s($config->dbsocket).'" size="50" /></div>';
 479         echo '</div>';
 480     }
 481
 482     if ($hint_database !== '') {
 483         echo '<div class="alert alert-danger">'.$hint_database.'</div>';
 484     }
 485     echo '</div>';
 486     install_print_footer($config);
 487     die;
 488 }
 489
 490
 491 if ($config->stage == INSTALL_DATABASETYPE) {
 492     $CFG->early_install_lang = false;
 493
 494     // Finally ask for DB type
 495     install_print_header($config, get_string('database', 'install'),
 496                                   get_string('databasetypehead', 'install'),
 497                                   get_string('databasetypesub', 'install'));
 498
 499     $databases = array('mysqli' => moodle_database::get_driver_instance('mysqli', 'native'),
 500                        'auroramysql' => moodle_database::get_driver_instance('auroramysql', 'native'),
 501                        'mariadb'=> moodle_database::get_driver_instance('mariadb', 'native'),
 502                        'pgsql'  => moodle_database::get_driver_instance('pgsql',  'native'),
 503                        'oci'    => moodle_database::get_driver_instance('oci',    'native'),
 504                        'sqlsrv' => moodle_database::get_driver_instance('sqlsrv', 'native'), // MS SQL*Server PHP driver
 505                       );
 506
 507     echo '<div class="row mb-4">';
 508     echo '<div class="col-md-3 text-md-right pt-1"><label for="dbtype">'.get_string('dbtype', 'install').'</label></div>';
 509     echo '<div class="col-md-9" data-fieldtype="select">';
 510     echo '<select class="form-control" id="dbtype" name="dbtype">';
 511     $disabled = array();
 512     $options = array();
 513     foreach ($databases as $type=>$database) {
 514         if ($database->driver_installed() !== true) {
 515             $disabled[$type] = $database;
 516             continue;
 517         }
 518         echo '<option value="'.s($type).'">'.$database->get_name().'</option>';
 519     }
 520     if ($disabled) {
 521         echo '<optgroup label="'.s(get_string('notavailable')).'">';
 522         foreach ($disabled as $type=>$database) {
 523             echo '<option value="'.s($type).'" class="notavailable">'.$database->get_name().'</option>';
 524         }
 525         echo '</optgroup>';
 526     }
 527     echo '</select></div></div>';
 528
 529     install_print_footer($config);
 530     die;
 531 }
 532
 533
 534
 535 if ($config->stage == INSTALL_ENVIRONMENT or $config->stage == INSTALL_PATHS) {
 536     $curl_fail    = ($lang !== 'en' and !extension_loaded('curl')); // needed for lang pack download
 537     $zip_fail     = ($lang !== 'en' and !extension_loaded('zip'));  // needed for lang pack download
 538
 539     if ($curl_fail or $zip_fail) {
 540         $config->stage = INSTALL_ENVIRONMENT;
 541
 542         install_print_header($config, get_string('environmenthead', 'install'),
 543                                       get_string('errorsinenvironment', 'install'),
 544                                       get_string('environmentsub2', 'install'));
 545
 546         echo '<div id="envresult"><dl>';
 547         if ($curl_fail) {
 548             echo '<dt>'.get_string('phpextension', 'install', 'cURL').'</dt><dd>'.get_string('environmentrequireinstall', 'admin').'</dd>';
 549         }
 550         if ($zip_fail) {
 551             echo '<dt>'.get_string('phpextension', 'install', 'Zip').'</dt><dd>'.get_string('environmentrequireinstall', 'admin').'</dd>';
 552         }
 553         echo '</dl></div>';
 554
 555         install_print_footer($config, true);
 556         die;
 557
 558     } else {
 559         $config->stage = INSTALL_PATHS;
 560     }
 561 }
 562
 563
 564
 565 if ($config->stage == INSTALL_PATHS) {
 566     $paths = array('wwwroot'  => get_string('wwwroot', 'install'),
 567                    'dirroot'  => get_string('dirroot', 'install'),
 568                    'dataroot' => get_string('dataroot', 'install'));
 569
 570     $sub = '<dl>';
 571     foreach ($paths as $path=>$name) {
 572         $sub .= '<dt>'.$name.'</dt><dd>'.get_string('pathssub'.$path, 'install').'</dd>';
 573     }
 574     if (!file_exists("$CFG->dirroot/admin/environment.xml")) {
 575         $sub .= '<dt>'.get_string('admindirname', 'install').'</dt><dd>'.get_string('pathssubadmindir', 'install').'</dd>';
 576     }
 577     $sub .= '</dl>';
 578
 579     install_print_header($config, get_string('paths', 'install'), get_string('pathshead', 'install'), $sub);
 580
 581     $strwwwroot      = get_string('wwwroot', 'install');
 582     $strdirroot      = get_string('dirroot', 'install');
 583     $strdataroot     = get_string('dataroot', 'install');
 584     $stradmindirname = get_string('admindirname', 'install');
 585
 586     echo '<div class="row mb-4">';
 587     echo '<div class="col-md-3 text-md-right pt-1"><label for="id_wwwroot">'.$paths['wwwroot'].'</label></div>';
 588     echo '<div class="col-md-9" data-fieldtype="text">';
 589     echo '<input id="id_wwwroot" name="wwwroot" type="text" class="form-control text-ltr" value="'.s($CFG->wwwroot).'" disabled="disabled" size="70" /></div>';
 590     echo '</div>';
 591
 592     echo '<div class="row mb-4">';
 593     echo '<div class="col-md-3 text-md-right pt-1"><label for="id_dirroot">'.$paths['dirroot'].'</label></div>';
 594     echo '<div class="col-md-9" data-fieldtype="text">';
 595     echo '<input id="id_dirroot" name="dirroot" type="text" class="form-control text-ltr" value="'.s($CFG->dirroot).'" disabled="disabled" size="70" /></div>';
 596     echo '</div>';
 597
 598     echo '<div class="row mb-4">';
 599     echo '<div class="col-md-3 text-md-right pt-1"><label for="id_dataroot">'.$paths['dataroot'].'</label></div>';
 600     echo '<div class="col-md-9" data-fieldtype="text">';
 601     echo '<input id="id_dataroot" name="dataroot" type="text" class="form-control text-ltr" value="'.s($config->dataroot).'" size="70" /></div>';
 602     echo '</div>';
 603     if ($hint_dataroot !== '') {
 604         echo '<div class="alert alert-danger">'.$hint_dataroot.'</div>';
 605     }
 606
 607
 608     if (!file_exists("$CFG->dirroot/admin/environment.xml")) {
 609         echo '<div class="row mb-4">';
 610         echo '<div class="col-md-3 text-md-right pt-1"><label for="id_admin">'.$paths['admindir'].'</label></div>';
 611         echo '<div class="col-md-9" data-fieldtype="text">';
 612         echo '<input id="id_admin" name="admin" type="text" class="form-control text-ltr" value="'.s($config->admin).'" size="10" /></div>';
 613         echo '</div>';
 614         if ($hint_admindir !== '') {
 615             echo '<div class="alert alert-danger">'.$hint_admindir.'</div>';
 616         }
 617         echo '</div>';
 618     }
 619
 620     echo '</div>';
 621
 622     install_print_footer($config);
 623     die;
 624 }
 625
 626
 627
 628 $config->stage = INSTALL_WELCOME;
 629
 630 if ($distro) {
 631     ob_start();
 632     include('install/distribution.html');
 633     $sub = ob_get_clean();
 634
 635     install_print_header($config, get_string('language'),
 636                                   get_string('chooselanguagehead', 'install'),
 637                                   $sub, 'alert-success');
 638
 639 } else {
 640     install_print_header($config, get_string('language'),
 641                                   get_string('chooselanguagehead', 'install'),
 642                                   get_string('chooselanguagesub', 'install'));
 643 }
 644
 645 $languages = get_string_manager()->get_list_of_translations();
 646 echo '<div class="row mb-4">';
 647 echo '<div class="col-md-3 text-md-right pt-1"><label for="langselect">'.get_string('language').'</label></div>';
 648 echo '<div class="col-md-9" data-fieldtype="select">';
 649 echo '<select id="langselect" class="form-control" name="lang" onchange="this.form.submit()">';
 650 foreach ($languages as $name=>$value) {
 651     $selected = ($name == $CFG->lang) ? 'selected="selected"' : '';
 652     echo '<option value="'.s($name).'" '.$selected.'>'.$value.'</option>';
 653 }
 654 echo '</select></div>';
 655 echo '</div>';
 656
 657 install_print_footer($config);
 658 die;
 659