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/lib/ -> installlib.php (source)

   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   * Functions to support installation process
  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  defined('MOODLE_INTERNAL') || die();
  28  
  29  /** INSTALL_WELCOME = 0 */
  30  define('INSTALL_WELCOME',       0);
  31  /** INSTALL_ENVIRONMENT = 1 */
  32  define('INSTALL_ENVIRONMENT',   1);
  33  /** INSTALL_PATHS = 2 */
  34  define('INSTALL_PATHS',         2);
  35  /** INSTALL_DOWNLOADLANG = 3 */
  36  define('INSTALL_DOWNLOADLANG',  3);
  37  /** INSTALL_DATABASETYPE = 4 */
  38  define('INSTALL_DATABASETYPE',  4);
  39  /** INSTALL_DATABASE = 5 */
  40  define('INSTALL_DATABASE',      5);
  41  /** INSTALL_SAVE = 6 */
  42  define('INSTALL_SAVE',          6);
  43  
  44  /**
  45   * Tries to detect the right www root setting.
  46   * @return string detected www root
  47   */
  48  function install_guess_wwwroot() {
  49      $wwwroot = '';
  50      if (empty($_SERVER['HTTPS']) or $_SERVER['HTTPS'] == 'off') {
  51          $wwwroot .= 'http://';
  52      } else {
  53          $wwwroot .= 'https://';
  54      }
  55      $hostport = explode(':', $_SERVER['HTTP_HOST']);
  56      $wwwroot .= reset($hostport);
  57      if ($_SERVER['SERVER_PORT'] != 80 and $_SERVER['SERVER_PORT'] != '443') {
  58          $wwwroot .= ':'.$_SERVER['SERVER_PORT'];
  59      }
  60      $wwwroot .= $_SERVER['SCRIPT_NAME'];
  61  
  62      list($wwwroot, $xtra) = explode('/install.php', $wwwroot);
  63  
  64      return $wwwroot;
  65  }
  66  
  67  /**
  68   * Copy of @see{ini_get_bool()}
  69   * @param string $ini_get_arg
  70   * @return bool
  71   */
  72  function install_ini_get_bool($ini_get_arg) {
  73      $temp = ini_get($ini_get_arg);
  74  
  75      if ($temp == '1' or strtolower($temp) == 'on') {
  76          return true;
  77      }
  78      return false;
  79  }
  80  
  81  /**
  82   * Creates dataroot if not exists yet,
  83   * makes sure it is writable, add lang directory
  84   * and add .htaccess just in case it works.
  85   *
  86   * @param string $dataroot full path to dataroot
  87   * @param int $dirpermissions
  88   * @return bool success
  89   */
  90  function install_init_dataroot($dataroot, $dirpermissions) {
  91      if (file_exists($dataroot) and !is_dir($dataroot)) {
  92          // file with the same name exists
  93          return false;
  94      }
  95  
  96      umask(0000); // $CFG->umaskpermissions is not set yet.
  97      if (!file_exists($dataroot)) {
  98          if (!mkdir($dataroot, $dirpermissions, true)) {
  99              // most probably this does not work, but anyway
 100              return false;
 101          }
 102      }
 103      @chmod($dataroot, $dirpermissions);
 104  
 105      if (!is_writable($dataroot)) {
 106          return false; // we can not continue
 107      }
 108  
 109      // create the directory for $CFG->tempdir
 110      if (!is_dir("$dataroot/temp")) {
 111          if (!mkdir("$dataroot/temp", $dirpermissions, true)) {
 112              return false;
 113          }
 114      }
 115      if (!is_writable("$dataroot/temp")) {
 116          return false; // we can not continue
 117      }
 118  
 119      // create the directory for $CFG->cachedir
 120      if (!is_dir("$dataroot/cache")) {
 121          if (!mkdir("$dataroot/cache", $dirpermissions, true)) {
 122              return false;
 123          }
 124      }
 125      if (!is_writable("$dataroot/cache")) {
 126          return false; // we can not continue
 127      }
 128  
 129      // create the directory for $CFG->langotherroot
 130      if (!is_dir("$dataroot/lang")) {
 131          if (!mkdir("$dataroot/lang", $dirpermissions, true)) {
 132              return false;
 133          }
 134      }
 135      if (!is_writable("$dataroot/lang")) {
 136          return false; // we can not continue
 137      }
 138  
 139      // finally just in case some broken .htaccess that prevents access just in case it is allowed
 140      if (!file_exists("$dataroot/.htaccess")) {
 141          if ($handle = fopen("$dataroot/.htaccess", 'w')) {
 142              fwrite($handle, "deny from all\r\nAllowOverride None\r\nNote: this file is broken intentionally, we do not want anybody to undo it in subdirectory!\r\n");
 143              fclose($handle);
 144          } else {
 145              return false;
 146          }
 147      }
 148  
 149      return true;
 150  }
 151  
 152  /**
 153   * Print help button
 154   * @param string $url
 155   * @param string $titel
 156   * @return void
 157   */
 158  function install_helpbutton($url, $title='') {
 159      if ($title == '') {
 160          $title = get_string('help');
 161      }
 162      echo "<a href=\"javascript:void(0)\" ";
 163      echo "onclick=\"return window.open('$url','Help','menubar=0,location=0,scrollbars,resizable,width=500,height=400')\"";
 164      echo ">";
 165      echo "<img src=\"pix/help.gif\" class=\"iconhelp\" alt=\"$title\" title=\"$title\"/>";
 166      echo "</a>\n";
 167  }
 168  
 169  /**
 170   * This is in function because we want the /install.php to parse in PHP4
 171   *
 172   * @param object $database
 173   * @param string $dbhsot
 174   * @param string $dbuser
 175   * @param string $dbpass
 176   * @param string $dbname
 177   * @param string $prefix
 178   * @param mixed $dboptions
 179   * @return string
 180   */
 181  function install_db_validate($database, $dbhost, $dbuser, $dbpass, $dbname, $prefix, $dboptions) {
 182      try {
 183          try {
 184              $database->connect($dbhost, $dbuser, $dbpass, $dbname, $prefix, $dboptions);
 185          } catch (moodle_exception $e) {
 186              // let's try to create new database
 187              if ($database->create_database($dbhost, $dbuser, $dbpass, $dbname, $dboptions)) {
 188                  $database->connect($dbhost, $dbuser, $dbpass, $dbname, $prefix, $dboptions);
 189              } else {
 190                  throw $e;
 191              }
 192          }
 193          return '';
 194      } catch (dml_exception $ex) {
 195          $stringmanager = get_string_manager();
 196          $errorstring = $ex->errorcode.'oninstall';
 197          $legacystring = $ex->errorcode;
 198          if ($stringmanager->string_exists($errorstring, $ex->module)) {
 199              // By using a different string id from the error code we are separating exception handling and output.
 200              $returnstring = $stringmanager->get_string($errorstring, $ex->module, $ex->a);
 201              if ($ex->debuginfo) {
 202                  $returnstring .= '<br />'.$ex->debuginfo;
 203              }
 204  
 205              return $returnstring;
 206          } else if ($stringmanager->string_exists($legacystring, $ex->module)) {
 207              // There are some DML exceptions that may be thrown here as well as during normal operation.
 208              // If we have a translated message already we still want to serve it here.
 209              // However it is not the preferred way.
 210              $returnstring = $stringmanager->get_string($legacystring, $ex->module, $ex->a);
 211              if ($ex->debuginfo) {
 212                  $returnstring .= '<br />'.$ex->debuginfo;
 213              }
 214  
 215              return $returnstring;
 216          }
 217          // No specific translation. Deliver a generic error message.
 218          return $stringmanager->get_string('dmlexceptiononinstall', 'error', $ex);
 219      }
 220  }
 221  
 222  /**
 223   * Returns content of config.php file.
 224   *
 225   * Uses PHP_EOL for generating proper end of lines for the given platform.
 226   *
 227   * @param moodle_database $database database instance
 228   * @param object $cfg copy of $CFG
 229   * @return string
 230   */
 231  function install_generate_configphp($database, $cfg) {
 232      $configphp = '<?php  // Moodle configuration file' . PHP_EOL . PHP_EOL;
 233  
 234      $configphp .= 'unset($CFG);' . PHP_EOL;
 235      $configphp .= 'global $CFG;' . PHP_EOL;
 236      $configphp .= '$CFG = new stdClass();' . PHP_EOL . PHP_EOL; // prevent PHP5 strict warnings
 237  
 238      $dbconfig = $database->export_dbconfig();
 239  
 240      foreach ($dbconfig as $key=>$value) {
 241          $key = str_pad($key, 9);
 242          $configphp .= '$CFG->'.$key.' = '.var_export($value, true) . ';' . PHP_EOL;
 243      }
 244      $configphp .= PHP_EOL;
 245  
 246      $configphp .= '$CFG->wwwroot   = '.var_export($cfg->wwwroot, true) . ';' . PHP_EOL ;
 247  
 248      $configphp .= '$CFG->dataroot  = '.var_export($cfg->dataroot, true) . ';' . PHP_EOL;
 249  
 250      $configphp .= '$CFG->admin     = '.var_export($cfg->admin, true) . ';' . PHP_EOL . PHP_EOL;
 251  
 252      if (empty($cfg->directorypermissions)) {
 253          $chmod = '02777';
 254      } else {
 255          $chmod = '0' . decoct($cfg->directorypermissions);
 256      }
 257      $configphp .= '$CFG->directorypermissions = ' . $chmod . ';' . PHP_EOL . PHP_EOL;
 258  
 259      if (isset($cfg->upgradekey) and $cfg->upgradekey !== '') {
 260          $configphp .= '$CFG->upgradekey = ' . var_export($cfg->upgradekey, true) . ';' . PHP_EOL . PHP_EOL;
 261      }
 262  
 263      $configphp .= 'require_once(__DIR__ . \'/lib/setup.php\');' . PHP_EOL . PHP_EOL;
 264      $configphp .= '// There is no php closing tag in this file,' . PHP_EOL;
 265      $configphp .= '// it is intentional because it prevents trailing whitespace problems!' . PHP_EOL;
 266  
 267      return $configphp;
 268  }
 269  
 270  /**
 271   * Prints complete help page used during installation.
 272   * Does not return.
 273   *
 274   * @global object
 275   * @param string $help
 276   */
 277  function install_print_help_page($help) {
 278      global $CFG, $OUTPUT; //TODO: MUST NOT USE $OUTPUT HERE!!!
 279  
 280      @header('Content-Type: text/html; charset=UTF-8');
 281      @header('X-UA-Compatible: IE=edge');
 282      @header('Cache-Control: no-store, no-cache, must-revalidate');
 283      @header('Cache-Control: post-check=0, pre-check=0', false);
 284      @header('Pragma: no-cache');
 285      @header('Expires: Mon, 20 Aug 1969 09:23:00 GMT');
 286      @header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
 287  
 288      echo '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">';
 289      echo '<html dir="'.(right_to_left() ? 'rtl' : 'ltr').'">
 290            <head>
 291            <link rel="shortcut icon" href="theme/clean/pix/favicon.ico" />
 292            <link rel="stylesheet" type="text/css" href="'.$CFG->wwwroot.'/install/css.php" />
 293            <title>'.get_string('installation','install').'</title>
 294            <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
 295            </head><body>';
 296      switch ($help) {
 297          case 'phpversionhelp':
 298              print_string($help, 'install', phpversion());
 299              break;
 300          case 'memorylimithelp':
 301              print_string($help, 'install', @ini_get('memory_limit'));
 302              break;
 303          default:
 304              print_string($help, 'install');
 305      }
 306      echo $OUTPUT->close_window_button(); //TODO: MUST NOT USE $OUTPUT HERE!!!
 307      echo '</body></html>';
 308      die;
 309  }
 310  
 311  /**
 312   * Prints installation page header, we can no use weblib yet in installer.
 313   *
 314   * @global object
 315   * @param array $config
 316   * @param string $stagename
 317   * @param string $heading
 318   * @param string $stagetext
 319   * @param string $stageclass
 320   * @return void
 321   */
 322  function install_print_header($config, $stagename, $heading, $stagetext, $stageclass = "alert-info") {
 323      global $CFG;
 324  
 325      @header('Content-Type: text/html; charset=UTF-8');
 326      @header('X-UA-Compatible: IE=edge');
 327      @header('Cache-Control: no-store, no-cache, must-revalidate');
 328      @header('Cache-Control: post-check=0, pre-check=0', false);
 329      @header('Pragma: no-cache');
 330      @header('Expires: Mon, 20 Aug 1969 09:23:00 GMT');
 331      @header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
 332  
 333      echo '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">';
 334      echo '<html dir="'.(right_to_left() ? 'rtl' : 'ltr').'">
 335            <head>
 336            <link rel="shortcut icon" href="theme/clean/pix/favicon.ico" />';
 337  
 338      echo '<link rel="stylesheet" type="text/css" href="'.$CFG->wwwroot.'/install/css.php" />
 339            <title>'.get_string('installation','install').' - Moodle '.$CFG->target_release.'</title>
 340            <meta name="robots" content="noindex">
 341            <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
 342            <meta http-equiv="pragma" content="no-cache" />
 343            <meta http-equiv="expires" content="0" />';
 344  
 345      echo '</head><body class="notloggedin">
 346              <div id="page" class="stage'.$config->stage.'">
 347                  <div id="page-header">
 348                      <div id="header" class=" clearfix">
 349                          <h1 class="headermain">'.get_string('installation','install').'</h1>
 350                          <div class="headermenu">&nbsp;</div>
 351                      </div>
 352                      <div class="navbar clearfix">
 353                          <nav class="breadcrumb-nav">
 354                              <ul class="breadcrumb"><li class="first">'.$stagename.'</li></ul>
 355                          </nav>
 356                          <div class="navbutton">&nbsp;</div>
 357                      </div>
 358                  </div>
 359            <!-- END OF HEADER -->
 360            <div id="installdiv">';
 361  
 362      echo '<h2>'.$heading.'</h2>';
 363  
 364      if ($stagetext !== '') {
 365          echo '<div class="alert ' . $stageclass . '">';
 366          echo $stagetext;
 367          echo '</div>';
 368      }
 369      // main
 370      echo '<form id="installform" method="post" action="install.php"><fieldset>';
 371      foreach ($config as $name=>$value) {
 372          echo '<input type="hidden" name="'.$name.'" value="'.s($value).'" />';
 373      }
 374  }
 375  
 376  /**
 377   * Prints installation page header, we can no use weblib yet in isntaller.
 378   *
 379   * @global object
 380   * @param array $config
 381   * @param bool $reload print reload button instead of next
 382   * @return void
 383   */
 384  function install_print_footer($config, $reload=false) {
 385      global $CFG;
 386  
 387      if ($config->stage > INSTALL_WELCOME) {
 388          $first = '<input type="submit" id="previousbutton" name="previous" value="&laquo; '.s(get_string('previous')).'" />';
 389      } else {
 390          $first = '<input type="submit" id="previousbutton" name="next" value="'.s(get_string('reload')).'" />';
 391          $first .= '<script type="text/javascript">
 392  //<![CDATA[
 393      var first = document.getElementById("previousbutton");
 394      first.style.visibility = "hidden";
 395  //]]>
 396  </script>
 397  ';
 398      }
 399  
 400      if ($reload) {
 401          $next = '<input type="submit" id="nextbutton" class="btn btn-primary" name="next" value="'.s(get_string('reload')).'" />';
 402      } else {
 403          $next = '<input type="submit" id="nextbutton" class="btn btn-primary" name="next" value="'.s(get_string('next')).' &raquo;" />';
 404      }
 405  
 406      echo '</fieldset><fieldset id="nav_buttons">'.$first.$next.'</fieldset>';
 407  
 408      $homelink  = '<div class="sitelink">'.
 409         '<a title="Moodle '. $CFG->target_release .'" href="http://docs.moodle.org/en/Administrator_documentation" onclick="this.target=\'_blank\'">'.
 410         '<img src="pix/moodlelogo.png" alt="'.get_string('moodlelogo').'" /></a></div>';
 411  
 412      echo '</form></div>';
 413      echo '<div id="page-footer">'.$homelink.'</div>';
 414      echo '</div></body></html>';
 415  }
 416  
 417  /**
 418   * Install Moodle DB,
 419   * config.php must exist, there must not be any tables in db yet.
 420   *
 421   * @param array $options adminpass is mandatory
 422   * @param bool $interactive
 423   * @return void
 424   */
 425  function install_cli_database(array $options, $interactive) {
 426      global $CFG, $DB;
 427      require_once($CFG->libdir.'/environmentlib.php');
 428      require_once($CFG->libdir.'/upgradelib.php');
 429  
 430      // show as much debug as possible
 431      @error_reporting(E_ALL | E_STRICT);
 432      @ini_set('display_errors', '1');
 433      $CFG->debug = (E_ALL | E_STRICT);
 434      $CFG->debugdisplay = true;
 435      $CFG->debugdeveloper = true;
 436  
 437      $CFG->version = '';
 438      $CFG->release = '';
 439      $CFG->branch = '';
 440  
 441      $version = null;
 442      $release = null;
 443      $branch = null;
 444  
 445      // read $version and $release
 446      require($CFG->dirroot.'/version.php');
 447  
 448      if ($DB->get_tables() ) {
 449          cli_error(get_string('clitablesexist', 'install'));
 450      }
 451  
 452      if (empty($options['adminpass'])) {
 453          cli_error('Missing required admin password');
 454      }
 455  
 456      // test environment first
 457      list($envstatus, $environment_results) = check_moodle_environment(normalize_version($release), ENV_SELECT_RELEASE);
 458      if (!$envstatus) {
 459          $errors = environment_get_errors($environment_results);
 460          cli_heading(get_string('environment', 'admin'));
 461          foreach ($errors as $error) {
 462              list($info, $report) = $error;
 463              echo "!! $info !!\n$report\n\n";
 464          }
 465          exit(1);
 466      }
 467  
 468      if (!$DB->setup_is_unicodedb()) {
 469          if (!$DB->change_db_encoding()) {
 470              // If could not convert successfully, throw error, and prevent installation
 471              cli_error(get_string('unicoderequired', 'admin'));
 472          }
 473      }
 474  
 475      if ($interactive) {
 476          cli_separator();
 477          cli_heading(get_string('databasesetup'));
 478      }
 479  
 480      // install core
 481      install_core($version, true);
 482      set_config('release', $release);
 483      set_config('branch', $branch);
 484  
 485      if (PHPUNIT_TEST) {
 486          // mark as test database as soon as possible
 487          set_config('phpunittest', 'na');
 488      }
 489  
 490      // install all plugins types, local, etc.
 491      upgrade_noncore(true);
 492  
 493      // set up admin user password
 494      $DB->set_field('user', 'password', hash_internal_user_password($options['adminpass']), array('username' => 'admin'));
 495  
 496      // Set the admin email address if specified.
 497      if (isset($options['adminemail'])) {
 498          $DB->set_field('user', 'email', $options['adminemail'], array('username' => 'admin'));
 499      }
 500  
 501      // rename admin username if needed
 502      if (isset($options['adminuser']) and $options['adminuser'] !== 'admin' and $options['adminuser'] !== 'guest') {
 503          $DB->set_field('user', 'username', $options['adminuser'], array('username' => 'admin'));
 504      }
 505  
 506      // indicate that this site is fully configured
 507      set_config('rolesactive', 1);
 508      upgrade_finished();
 509  
 510      // log in as admin - we need do anything when applying defaults
 511      \core\session\manager::set_user(get_admin());
 512  
 513      // apply all default settings, do it twice to fill all defaults - some settings depend on other setting
 514      admin_apply_default_settings(NULL, true);
 515      admin_apply_default_settings(NULL, true);
 516      set_config('registerauth', '');
 517  
 518      // set the site name
 519      if (isset($options['shortname']) and $options['shortname'] !== '') {
 520          $DB->set_field('course', 'shortname', $options['shortname'], array('format' => 'site'));
 521      }
 522      if (isset($options['fullname']) and $options['fullname'] !== '') {
 523          $DB->set_field('course', 'fullname', $options['fullname'], array('format' => 'site'));
 524      }
 525      if (isset($options['summary'])) {
 526          $DB->set_field('course', 'summary', $options['summary'], array('format' => 'site'));
 527      }
 528  }


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