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   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  
  53  // Servers should define a default timezone in php.ini, but if they don't then make sure something is defined.
  54  if (!function_exists('date_default_timezone_set') or !function_exists('date_default_timezone_get')) {
  55      echo("Timezone functions are not available.");
  56      die;
  57  }
  58  date_default_timezone_set(@date_default_timezone_get());
  59  
  60  // make sure PHP errors are displayed - helps with diagnosing of problems
  61  @error_reporting(E_ALL);
  62  @ini_set('display_errors', '1');
  63  
  64  // Check that PHP is of a sufficient version.
  65  if (version_compare(phpversion(), '5.4.4') < 0) {
  66      $phpversion = phpversion();
  67      // do NOT localise - lang strings would not work here and we CAN not move it after installib
  68      echo "Moodle 2.7 or later requires at least PHP 5.4.4 (currently using version $phpversion).<br />";
  69      echo "Please upgrade your server software or install older Moodle version.";
  70      die;
  71  }
  72  
  73  // make sure iconv is available and actually works
  74  if (!function_exists('iconv')) {
  75      // this should not happen, this must be very borked install
  76      echo 'Moodle requires the iconv PHP extension. Please install or enable the iconv extension.';
  77      die();
  78  }
  79  
  80  if (PHP_INT_SIZE > 4) {
  81      // most probably 64bit PHP - we need a lot more memory
  82      $minrequiredmemory = '70M';
  83  } else {
  84      // 32bit PHP
  85      $minrequiredmemory = '40M';
  86  }
  87  // increase or decrease available memory - we need to make sure moodle
  88  // installs even with low memory, otherwise developers would overlook
  89  // sudden increases of memory needs ;-)
  90  @ini_set('memory_limit', $minrequiredmemory);
  91  
  92  /** Used by library scripts to check they are being called by Moodle */
  93  define('MOODLE_INTERNAL', true);
  94  
  95  require_once (__DIR__.'/lib/classes/component.php');
  96  require_once (__DIR__.'/lib/installlib.php');
  97  
  98  // TODO: add lang detection here if empty $_REQUEST['lang']
  99  
 100  // distro specific customisation
 101  $distro = null;
 102  if (file_exists('install/distrolib.php')) {
 103      require_once('install/distrolib.php');
 104      if (function_exists('distro_get_config')) {
 105          $distro = distro_get_config();
 106      }
 107  }
 108  
 109  $config = new stdClass();
 110  $config->lang = $lang;
 111  
 112  if (!empty($_POST)) {
 113      $config->stage = (int)$_POST['stage'];
 114  
 115      if (isset($_POST['previous'])) {
 116          $config->stage--;
 117          if (INSTALL_DATABASETYPE and !empty($distro->dbtype)) {
 118              $config->stage--;
 119          }
 120          if ($config->stage == INSTALL_ENVIRONMENT or $config->stage == INSTALL_DOWNLOADLANG) {
 121              $config->stage--;
 122          }
 123      } else if (isset($_POST['next'])) {
 124          $config->stage++;
 125      }
 126  
 127      $config->dbtype   = trim($_POST['dbtype']);
 128      $config->dbhost   = trim($_POST['dbhost']);
 129      $config->dbuser   = trim($_POST['dbuser']);
 130      $config->dbpass   = trim($_POST['dbpass']);
 131      $config->dbname   = trim($_POST['dbname']);
 132      $config->prefix   = trim($_POST['prefix']);
 133      $config->dbport   = (int)trim($_POST['dbport']);
 134      $config->dbsocket = trim($_POST['dbsocket']);
 135  
 136      if ($config->dbport <= 0) {
 137          $config->dbport = '';
 138      }
 139  
 140      $config->admin    = empty($_POST['admin']) ? 'admin' : trim($_POST['admin']);
 141  
 142      $config->dataroot = trim($_POST['dataroot']);
 143  
 144  } else {
 145      $config->stage    = INSTALL_WELCOME;
 146  
 147      $config->dbtype   = empty($distro->dbtype) ? '' : $distro->dbtype; // let distro skip dbtype selection
 148      $config->dbhost   = empty($distro->dbhost) ? 'localhost' : $distro->dbhost; // let distros set dbhost
 149      $config->dbuser   = empty($distro->dbuser) ? '' : $distro->dbuser; // let distros set dbuser
 150      $config->dbpass   = '';
 151      $config->dbname   = 'moodle';
 152      $config->prefix   = 'mdl_';
 153      $config->dbport   = empty($distro->dbport) ? '' : $distro->dbport;
 154      $config->dbsocket = empty($distro->dbsocket) ? '' : $distro->dbsocket;
 155  
 156      $config->admin    = 'admin';
 157  
 158      $config->dataroot = empty($distro->dataroot) ? null  : $distro->dataroot; // initialised later after including libs or by distro
 159  }
 160  
 161  // Fake some settings so that we can use selected functions from moodlelib.php, weblib.php and filelib.php.
 162  global $CFG;
 163  $CFG = new stdClass();
 164  $CFG->lang                 = $config->lang;
 165  $CFG->dirroot              = dirname(__FILE__);
 166  $CFG->libdir               = "$CFG->dirroot/lib";
 167  $CFG->wwwroot              = install_guess_wwwroot(); // can not be changed - ppl must use the real address when installing
 168  $CFG->httpswwwroot         = $CFG->wwwroot;
 169  $CFG->dataroot             = $config->dataroot;
 170  $CFG->tempdir              = $CFG->dataroot.'/temp';
 171  $CFG->cachedir             = $CFG->dataroot.'/cache';
 172  $CFG->localcachedir        = $CFG->dataroot.'/localcache';
 173  $CFG->admin                = $config->admin;
 174  $CFG->docroot              = 'http://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  //point zend include path to moodles lib/zend so that includes and requires will search there for files before anywhere else
 221  ini_set('include_path', $CFG->libdir.'/zend' . PATH_SEPARATOR . ini_get('include_path'));
 222  
 223  // Register our classloader, in theory somebody might want to replace it to load other hacked core classes.
 224  // Required because the database checks below lead to session interaction which is going to lead us to requiring autoloaded classes.
 225  if (defined('COMPONENT_CLASSLOADER')) {
 226      spl_autoload_register(COMPONENT_CLASSLOADER);
 227  } else {
 228      spl_autoload_register('core_component::classloader');
 229  }
 230  
 231  require ('version.php');
 232  $CFG->target_release = $release;
 233  
 234  \core\session\manager::init_empty_session();
 235  global $SESSION;
 236  global $USER;
 237  
 238  global $COURSE;
 239  $COURSE = new stdClass();
 240  $COURSE->id = 1;
 241  
 242  global $SITE;
 243  $SITE = $COURSE;
 244  define('SITEID', 1);
 245  
 246  $hint_dataroot = '';
 247  $hint_admindir = '';
 248  $hint_database = '';
 249  
 250  // Are we in help mode?
 251  if (isset($_GET['help'])) {
 252      install_print_help_page($_GET['help']);
 253  }
 254  
 255  //first time here? find out suitable dataroot
 256  if (is_null($CFG->dataroot)) {
 257      $CFG->dataroot = dirname(dirname(__FILE__)).DIRECTORY_SEPARATOR.'moodledata';
 258  
 259      $i = 0; //safety check - dirname might return some unexpected results
 260      while(is_dataroot_insecure()) {
 261          $parrent = dirname($CFG->dataroot);
 262          $i++;
 263          if ($parrent == '/' or $parrent == '.' or preg_match('/^[a-z]:\\\?$/i', $parrent) or ($i > 100)) {
 264              $CFG->dataroot = ''; //can not find secure location for dataroot
 265              break;
 266          }
 267          $CFG->dataroot = dirname($parrent).DIRECTORY_SEPARATOR.'moodledata';
 268      }
 269      $config->dataroot = $CFG->dataroot;
 270      $config->stage    = INSTALL_WELCOME;
 271  }
 272  
 273  // now let's do the stage work
 274  if ($config->stage < INSTALL_WELCOME) {
 275      $config->stage = INSTALL_WELCOME;
 276  }
 277  if ($config->stage > INSTALL_SAVE) {
 278      $config->stage = INSTALL_SAVE;
 279  }
 280  
 281  
 282  
 283  if ($config->stage == INSTALL_SAVE) {
 284      $CFG->early_install_lang = false;
 285  
 286      $database = moodle_database::get_driver_instance($config->dbtype, 'native');
 287      if (!$database->driver_installed()) {
 288          $config->stage = INSTALL_DATABASETYPE;
 289      } else {
 290          if (function_exists('distro_pre_create_db')) { // Hook for distros needing to do something before DB creation
 291              $distro = distro_pre_create_db($database, $config->dbhost, $config->dbuser, $config->dbpass, $config->dbname, $config->prefix, array('dbpersist'=>0, 'dbport'=>$config->dbport, 'dbsocket'=>$config->dbsocket), $distro);
 292          }
 293          $hint_database = install_db_validate($database, $config->dbhost, $config->dbuser, $config->dbpass, $config->dbname, $config->prefix, array('dbpersist'=>0, 'dbport'=>$config->dbport, 'dbsocket'=>$config->dbsocket));
 294  
 295          if ($hint_database === '') {
 296              $configphp = install_generate_configphp($database, $CFG);
 297  
 298              umask(0137);
 299              if (($fh = @fopen($configfile, 'w')) !== false) {
 300                  fwrite($fh, $configphp);
 301                  fclose($fh);
 302              }
 303  
 304              if (file_exists($configfile)) {
 305                  // config created, let's continue!
 306                  redirect("$CFG->wwwroot/$config->admin/index.php?lang=$config->lang");
 307              }
 308  
 309              install_print_header($config, 'config.php',
 310                                            get_string('configurationcompletehead', 'install'),
 311                                            get_string('configurationcompletesub', 'install').get_string('configfilenotwritten', 'install'), 'alert-error');
 312              echo '<div class="configphp"><pre>';
 313              echo p($configphp);
 314              echo '</pre></div>';
 315  
 316              install_print_footer($config);
 317              die;
 318  
 319          } else {
 320              $config->stage = INSTALL_DATABASE;
 321          }
 322      }
 323  }
 324  
 325  
 326  
 327  if ($config->stage == INSTALL_DOWNLOADLANG) {
 328      if (empty($CFG->dataroot)) {
 329          $config->stage = INSTALL_PATHS;
 330  
 331      } else if (is_dataroot_insecure()) {
 332          $hint_dataroot = get_string('pathsunsecuredataroot', 'install');
 333          $config->stage = INSTALL_PATHS;
 334  
 335      } else if (!file_exists($CFG->dataroot)) {
 336          $a = new stdClass();
 337          $a->parent = dirname($CFG->dataroot);
 338          $a->dataroot = $CFG->dataroot;
 339          if (!is_writable($a->parent)) {
 340              $hint_dataroot = get_string('pathsroparentdataroot', 'install', $a);
 341              $config->stage = INSTALL_PATHS;
 342          } else {
 343              if (!install_init_dataroot($CFG->dataroot, $CFG->directorypermissions)) {
 344                  $hint_dataroot = get_string('pathserrcreatedataroot', 'install', $a);
 345                  $config->stage = INSTALL_PATHS;
 346              }
 347          }
 348  
 349      } else if (!install_init_dataroot($CFG->dataroot, $CFG->directorypermissions)) {
 350          $hint_dataroot = get_string('pathserrcreatedataroot', 'install', array('dataroot' => $CFG->dataroot));
 351          $config->stage = INSTALL_PATHS;
 352      }
 353  
 354      if (empty($hint_dataroot) and !is_writable($CFG->dataroot)) {
 355          $hint_dataroot = get_string('pathsrodataroot', 'install');
 356          $config->stage = INSTALL_PATHS;
 357      }
 358  
 359      if ($config->admin === '' or !file_exists($CFG->dirroot.'/'.$config->admin.'/environment.xml')) {
 360          $hint_admindir = get_string('pathswrongadmindir', 'install');
 361          $config->stage = INSTALL_PATHS;
 362      }
 363  }
 364  
 365  
 366  
 367  if ($config->stage == INSTALL_DOWNLOADLANG) {
 368      // no need to download anything if en lang selected
 369      if ($CFG->lang == 'en') {
 370          $config->stage = INSTALL_DATABASETYPE;
 371      }
 372  }
 373  
 374  
 375  
 376  if ($config->stage == INSTALL_DATABASETYPE) {
 377      // skip db selection if distro package supports only one db
 378      if (!empty($distro->dbtype)) {
 379          $config->stage = INSTALL_DATABASE;
 380      }
 381  }
 382  
 383  
 384  if ($config->stage == INSTALL_DOWNLOADLANG) {
 385      $downloaderror = '';
 386  
 387      // download and install required lang packs, the lang dir has already been created in install_init_dataroot
 388      $installer = new lang_installer($CFG->lang);
 389      $results = $installer->run();
 390      foreach ($results as $langcode => $langstatus) {
 391          if ($langstatus === lang_installer::RESULT_DOWNLOADERROR) {
 392              $a       = new stdClass();
 393              $a->url  = $installer->lang_pack_url($langcode);
 394              $a->dest = $CFG->dataroot.'/lang';
 395              $downloaderror = get_string('remotedownloaderror', 'error', $a);
 396          }
 397      }
 398  
 399      if ($downloaderror !== '') {
 400          install_print_header($config, get_string('language'), get_string('langdownloaderror', 'install', $CFG->lang), $downloaderror);
 401          install_print_footer($config);
 402          die;
 403      } else {
 404          if (empty($distro->dbtype)) {
 405              $config->stage = INSTALL_DATABASETYPE;
 406          } else {
 407              $config->stage = INSTALL_DATABASE;
 408          }
 409      }
 410  
 411      // switch the string_manager instance to stop using install/lang/
 412      $CFG->early_install_lang = false;
 413      $CFG->langotherroot      = $CFG->dataroot.'/lang';
 414      $CFG->langlocalroot      = $CFG->dataroot.'/lang';
 415      get_string_manager(true);
 416  }
 417  
 418  
 419  if ($config->stage == INSTALL_DATABASE) {
 420      $CFG->early_install_lang = false;
 421  
 422      $database = moodle_database::get_driver_instance($config->dbtype, 'native');
 423  
 424      $sub = '<h3>'.$database->get_name().'</h3>'.$database->get_configuration_help();
 425  
 426      install_print_header($config, get_string('database', 'install'), get_string('databasehead', 'install'), $sub);
 427  
 428      $strdbhost   = get_string('databasehost', 'install');
 429      $strdbname   = get_string('databasename', 'install');
 430      $strdbuser   = get_string('databaseuser', 'install');
 431      $strdbpass   = get_string('databasepass', 'install');
 432      $strprefix   = get_string('dbprefix', 'install');
 433      $strdbport   = get_string('databaseport', 'install');
 434      $strdbsocket = get_string('databasesocket', 'install');
 435  
 436      echo '<div class="userinput">';
 437  
 438      $disabled = empty($distro->dbhost) ? '' : 'disabled="disabled';
 439      echo '<div class="fitem"><div class="fitemtitle"><label for="id_dbhost">'.$strdbhost.'</label></div>';
 440      echo '<div class="fitemelement"><input id="id_dbhost" name="dbhost" '.$disabled.' type="text" value="'.s($config->dbhost).'" size="50" /></div>';
 441      echo '</div>';
 442  
 443      echo '<div class="fitem"><div class="fitemtitle"><label for="id_dbname">'.$strdbname.'</label></div>';
 444      echo '<div class="fitemelement"><input id="id_dbname" name="dbname" type="text" value="'.s($config->dbname).'" size="50" /></div>';
 445      echo '</div>';
 446  
 447      $disabled = empty($distro->dbuser) ? '' : 'disabled="disabled';
 448      echo '<div class="fitem"><div class="fitemtitle"><label for="id_dbuser">'.$strdbuser.'</label></div>';
 449      echo '<div class="fitemelement"><input id="id_dbuser" name="dbuser" '.$disabled.' type="text" value="'.s($config->dbuser).'" size="50" /></div>';
 450      echo '</div>';
 451  
 452      echo '<div class="fitem"><div class="fitemtitle"><label for="id_dbpass">'.$strdbpass.'</label></div>';
 453      // no password field here, the password may be visible in config.php if we can not write it to disk
 454      echo '<div class="fitemelement"><input id="id_dbpass" name="dbpass" type="text" value="'.s($config->dbpass).'" size="50" /></div>';
 455      echo '</div>';
 456  
 457      echo '<div class="fitem"><div class="fitemtitle"><label for="id_prefix">'.$strprefix.'</label></div>';
 458      echo '<div class="fitemelement"><input id="id_prefix" name="prefix" type="text" value="'.s($config->prefix).'" size="10" /></div>';
 459      echo '</div>';
 460  
 461      echo '<div class="fitem"><div class="fitemtitle"><label for="id_prefix">'.$strdbport.'</label></div>';
 462      echo '<div class="fitemelement"><input id="id_dbport" name="dbport" type="text" value="'.s($config->dbport).'" size="10" /></div>';
 463      echo '</div>';
 464  
 465      if (!(stristr(PHP_OS, 'win') && !stristr(PHP_OS, 'darwin'))) {
 466          echo '<div class="fitem"><div class="fitemtitle"><label for="id_dbsocket">'.$strdbsocket.'</label></div>';
 467          echo '<div class="fitemelement"><input id="id_dbsocket" name="dbsocket" type="text" value="'.s($config->dbsocket).'" size="50" /></div>';
 468          echo '</div>';
 469      }
 470  
 471      if ($hint_database !== '') {
 472          echo '<div class="alert alert-error">'.$hint_database.'</div>';
 473      }
 474      echo '</div>';
 475      install_print_footer($config);
 476      die;
 477  }
 478  
 479  
 480  if ($config->stage == INSTALL_DATABASETYPE) {
 481      $CFG->early_install_lang = false;
 482  
 483      // Finally ask for DB type
 484      install_print_header($config, get_string('database', 'install'),
 485                                    get_string('databasetypehead', 'install'),
 486                                    get_string('databasetypesub', 'install'));
 487  
 488      $databases = array('mysqli' => moodle_database::get_driver_instance('mysqli', 'native'),
 489                         'mariadb'=> moodle_database::get_driver_instance('mariadb', 'native'),
 490                         'pgsql'  => moodle_database::get_driver_instance('pgsql',  'native'),
 491                         'oci'    => moodle_database::get_driver_instance('oci',    'native'),
 492                         'sqlsrv' => moodle_database::get_driver_instance('sqlsrv', 'native'), // MS SQL*Server PHP driver
 493                         'mssql'  => moodle_database::get_driver_instance('mssql',  'native'), // FreeTDS driver
 494                        );
 495  
 496      echo '<div class="userinput">';
 497      echo '<div class="fitem"><div class="fitemtitle"><label for="dbtype">'.get_string('dbtype', 'install').'</label></div>';
 498      echo '<div class="fitemelement"><select id="dbtype" name="dbtype">';
 499      $disabled = array();
 500      $options = array();
 501      foreach ($databases as $type=>$database) {
 502          if ($database->driver_installed() !== true) {
 503              $disabled[$type] = $database;
 504              continue;
 505          }
 506          echo '<option value="'.s($type).'">'.$database->get_name().'</option>';
 507      }
 508      if ($disabled) {
 509          echo '<optgroup label="'.s(get_string('notavailable')).'">';
 510          foreach ($disabled as $type=>$database) {
 511              echo '<option value="'.s($type).'" class="notavailable">'.$database->get_name().'</option>';
 512          }
 513          echo '</optgroup>';
 514      }
 515      echo '</select></div></div>';
 516      echo '</div>';
 517  
 518      install_print_footer($config);
 519      die;
 520  }
 521  
 522  
 523  
 524  if ($config->stage == INSTALL_ENVIRONMENT or $config->stage == INSTALL_PATHS) {
 525      $curl_fail    = ($lang !== 'en' and !extension_loaded('curl')); // needed for lang pack download
 526      $zip_fail     = ($lang !== 'en' and !extension_loaded('zip'));  // needed for lang pack download
 527  
 528      if ($curl_fail or $zip_fail) {
 529          $config->stage = INSTALL_ENVIRONMENT;
 530  
 531          install_print_header($config, get_string('environmenthead', 'install'),
 532                                        get_string('errorsinenvironment', 'install'),
 533                                        get_string('environmentsub2', 'install'));
 534  
 535          echo '<div id="envresult"><dl>';
 536          if ($curl_fail) {
 537              echo '<dt>'.get_string('phpextension', 'install', 'cURL').'</dt><dd>'.get_string('environmentrequireinstall', 'admin').'</dd>';
 538          }
 539          if ($zip_fail) {
 540              echo '<dt>'.get_string('phpextension', 'install', 'Zip').'</dt><dd>'.get_string('environmentrequireinstall', 'admin').'</dd>';
 541          }
 542          echo '</dl></div>';
 543  
 544          install_print_footer($config, true);
 545          die;
 546  
 547      } else {
 548          $config->stage = INSTALL_PATHS;
 549      }
 550  }
 551  
 552  
 553  
 554  if ($config->stage == INSTALL_PATHS) {
 555      $paths = array('wwwroot'  => get_string('wwwroot', 'install'),
 556                     'dirroot'  => get_string('dirroot', 'install'),
 557                     'dataroot' => get_string('dataroot', 'install'));
 558  
 559      $sub = '<dl>';
 560      foreach ($paths as $path=>$name) {
 561          $sub .= '<dt>'.$name.'</dt><dd>'.get_string('pathssub'.$path, 'install').'</dd>';
 562      }
 563      if (!file_exists("$CFG->dirroot/admin/environment.xml")) {
 564          $sub .= '<dt>'.get_string('admindirname', 'install').'</dt><dd>'.get_string('pathssubadmindir', 'install').'</dd>';
 565      }
 566      $sub .= '</dl>';
 567  
 568      install_print_header($config, get_string('paths', 'install'), get_string('pathshead', 'install'), $sub);
 569  
 570      $strwwwroot      = get_string('wwwroot', 'install');
 571      $strdirroot      = get_string('dirroot', 'install');
 572      $strdataroot     = get_string('dataroot', 'install');
 573      $stradmindirname = get_string('admindirname', 'install');
 574  
 575      echo '<div class="userinput">';
 576      echo '<div class="fitem"><div class="fitemtitle"><label for="id_wwwroot">'.$paths['wwwroot'].'</label></div>';
 577      echo '<div class="fitemelement"><input id="id_wwwroot" name="wwwroot" type="text" value="'.s($CFG->wwwroot).'" disabled="disabled" size="70" /></div>';
 578      echo '</div>';
 579  
 580      echo '<div class="fitem"><div class="fitemtitle"><label for="id_dirroot">'.$paths['dirroot'].'</label></div>';
 581      echo '<div class="fitemelement"><input id="id_dirroot" name="dirroot" type="text" value="'.s($CFG->dirroot).'" disabled="disabled" size="70" /></div>';
 582      echo '</div>';
 583  
 584      echo '<div class="fitem"><div class="fitemtitle"><label for="id_dataroot">'.$paths['dataroot'].'</label></div>';
 585      echo '<div class="fitemelement"><input id="id_dataroot" name="dataroot" type="text" value="'.s($config->dataroot).'" size="70" /></div>';
 586      if ($hint_dataroot !== '') {
 587          echo '<div class="alert alert-error">'.$hint_dataroot.'</div>';
 588      }
 589      echo '</div>';
 590  
 591  
 592      if (!file_exists("$CFG->dirroot/admin/environment.xml")) {
 593          echo '<div class="fitem"><div class="fitemtitle"><label for="id_admin">'.$paths['admindir'].'</label></div>';
 594          echo '<div class="fitemelement"><input id="id_admin" name="admin" type="text" value="'.s($config->admin).'" size="10" /></div>';
 595          if ($hint_admindir !== '') {
 596              echo '<div class="alert alert-error">'.$hint_admindir.'</div>';
 597          }
 598          echo '</div>';
 599      }
 600  
 601      echo '</div>';
 602  
 603      install_print_footer($config);
 604      die;
 605  }
 606  
 607  
 608  
 609  $config->stage = INSTALL_WELCOME;
 610  
 611  if ($distro) {
 612      ob_start();
 613      include('install/distribution.html');
 614      $sub = ob_get_clean();
 615  
 616      install_print_header($config, get_string('language'),
 617                                    get_string('chooselanguagehead', 'install'),
 618                                    $sub, 'alert-success');
 619  
 620  } else {
 621      install_print_header($config, get_string('language'),
 622                                    get_string('chooselanguagehead', 'install'),
 623                                    get_string('chooselanguagesub', 'install'));
 624  }
 625  
 626  $languages = get_string_manager()->get_list_of_translations();
 627  echo '<div class="userinput">';
 628  echo '<div class="fitem"><div class="fitemtitle"><label for="langselect">'.get_string('language').'</label></div>';
 629  echo '<div class="fitemelement"><select id="langselect" name="lang" onchange="this.form.submit()">';
 630  foreach ($languages as $name=>$value) {
 631      $selected = ($name == $CFG->lang) ? 'selected="selected"' : '';
 632      echo '<option value="'.s($name).'" '.$selected.'>'.$value.'</option>';
 633  }
 634  echo '</select></div></div>';
 635  echo '</div>';
 636  
 637  install_print_footer($config);
 638  die;
 639  

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