lib/installlib.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  * 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, $dboptions) {
 182     if (!preg_match('/^[a-z_]*$/', $prefix)) {
 183         return get_string('invaliddbprefix', 'install');
 184     }
 185     try {
 186         try {
 187             $database->connect($dbhost, $dbuser, $dbpass, $dbname, $prefix, $dboptions);
 188         } catch (moodle_exception $e) {
 189             // let's try to create new database
 190             if ($database->create_database($dbhost, $dbuser, $dbpass, $dbname, $dboptions)) {
 191                 $database->connect($dbhost, $dbuser, $dbpass, $dbname, $prefix, $dboptions);
 192             } else {
 193                 throw $e;
 194             }
 195         }
 196         return '';
 197     } catch (dml_exception $ex) {
 198         $stringmanager = get_string_manager();
 199         $errorstring = $ex->errorcode.'oninstall';
 200         $legacystring = $ex->errorcode;
 201         if ($stringmanager->string_exists($errorstring, $ex->module)) {
 202             // By using a different string id from the error code we are separating exception handling and output.
 203             $returnstring = $stringmanager->get_string($errorstring, $ex->module, $ex->a);
 204             if ($ex->debuginfo) {
 205                 $returnstring .= '<br />'.$ex->debuginfo;
 206             }
 207
 208             return $returnstring;
 209         } else if ($stringmanager->string_exists($legacystring, $ex->module)) {
 210             // There are some DML exceptions that may be thrown here as well as during normal operation.
 211             // If we have a translated message already we still want to serve it here.
 212             // However it is not the preferred way.
 213             $returnstring = $stringmanager->get_string($legacystring, $ex->module, $ex->a);
 214             if ($ex->debuginfo) {
 215                 $returnstring .= '<br />'.$ex->debuginfo;
 216             }
 217
 218             return $returnstring;
 219         }
 220         // No specific translation. Deliver a generic error message.
 221         return $stringmanager->get_string('dmlexceptiononinstall', 'error', $ex);
 222     }
 223 }
 224
 225 /**
 226  * Returns content of config.php file.
 227  *
 228  * Uses PHP_EOL for generating proper end of lines for the given platform.
 229  *
 230  * @param moodle_database $database database instance
 231  * @param object $cfg copy of $CFG
 232  * @return string
 233  */
 234 function install_generate_configphp($database, $cfg) {
 235     $configphp = '<?php  // Moodle configuration file' . PHP_EOL . PHP_EOL;
 236
 237     $configphp .= 'unset($CFG);' . PHP_EOL;
 238     $configphp .= 'global $CFG;' . PHP_EOL;
 239     $configphp .= '$CFG = new stdClass();' . PHP_EOL . PHP_EOL; // prevent PHP5 strict warnings
 240
 241     $dbconfig = $database->export_dbconfig();
 242
 243     foreach ($dbconfig as $key=>$value) {
 244         $key = str_pad($key, 9);
 245         $configphp .= '$CFG->'.$key.' = '.var_export($value, true) . ';' . PHP_EOL;
 246     }
 247     $configphp .= PHP_EOL;
 248
 249     $configphp .= '$CFG->wwwroot   = '.var_export($cfg->wwwroot, true) . ';' . PHP_EOL ;
 250
 251     $configphp .= '$CFG->dataroot  = '.var_export($cfg->dataroot, true) . ';' . PHP_EOL;
 252
 253     $configphp .= '$CFG->admin     = '.var_export($cfg->admin, true) . ';' . PHP_EOL . PHP_EOL;
 254
 255     if (empty($cfg->directorypermissions)) {
 256         $chmod = '02777';
 257     } else {
 258         $chmod = '0' . decoct($cfg->directorypermissions);
 259     }
 260     $configphp .= '$CFG->directorypermissions = ' . $chmod . ';' . PHP_EOL . PHP_EOL;
 261
 262     if (isset($cfg->upgradekey) and $cfg->upgradekey !== '') {
 263         $configphp .= '$CFG->upgradekey = ' . var_export($cfg->upgradekey, true) . ';' . PHP_EOL . PHP_EOL;
 264     }
 265
 266     if (isset($cfg->setsitepresetduringinstall) and $cfg->setsitepresetduringinstall !== '') {
 267         $configphp .= '$CFG->setsitepresetduringinstall = ' . var_export($cfg->setsitepresetduringinstall, true) .
 268             ';' . PHP_EOL . PHP_EOL;
 269     }
 270
 271     $configphp .= 'require_once(__DIR__ . \'/lib/setup.php\');' . PHP_EOL . PHP_EOL;
 272     $configphp .= '// There is no php closing tag in this file,' . PHP_EOL;
 273     $configphp .= '// it is intentional because it prevents trailing whitespace problems!' . PHP_EOL;
 274
 275     return $configphp;
 276 }
 277
 278 /**
 279  * Prints complete help page used during installation.
 280  * Does not return.
 281  *
 282  * @global object
 283  * @param string $help
 284  */
 285 function install_print_help_page($help) {
 286     global $CFG, $OUTPUT; //TODO: MUST NOT USE $OUTPUT HERE!!!
 287
 288     @header('Content-Type: text/html; charset=UTF-8');
 289     @header('X-UA-Compatible: IE=edge');
 290     @header('Cache-Control: no-store, no-cache, must-revalidate');
 291     @header('Cache-Control: post-check=0, pre-check=0', false);
 292     @header('Pragma: no-cache');
 293     @header('Expires: Mon, 20 Aug 1969 09:23:00 GMT');
 294     @header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
 295
 296     echo '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">';
 297     echo '<html dir="'.(right_to_left() ? 'rtl' : 'ltr').'">
 298           <head>
 299           <link rel="shortcut icon" href="theme/clean/pix/favicon.ico" />
 300           <link rel="stylesheet" type="text/css" href="'.$CFG->wwwroot.'/install/css.php" />
 301           <title>'.get_string('installation','install').'</title>
 302           <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
 303           </head><body>';
 304     switch ($help) {
 305         case 'phpversionhelp':
 306             print_string($help, 'install', phpversion());
 307             break;
 308         case 'memorylimithelp':
 309             print_string($help, 'install', @ini_get('memory_limit'));
 310             break;
 311         default:
 312             print_string($help, 'install');
 313     }
 314     echo $OUTPUT->close_window_button(); //TODO: MUST NOT USE $OUTPUT HERE!!!
 315     echo '</body></html>';
 316     die;
 317 }
 318
 319 /**
 320  * Prints installation page header, we can not use weblib yet in installer.
 321  *
 322  * @global object
 323  * @param stdClass $config
 324  * @param string $stagename
 325  * @param string $heading
 326  * @param string $stagetext
 327  * @param string $stageclass
 328  * @return void
 329  */
 330 function install_print_header($config, $stagename, $heading, $stagetext, $stageclass = "alert-info") {
 331     global $CFG;
 332
 333     @header('Content-Type: text/html; charset=UTF-8');
 334     @header('X-UA-Compatible: IE=edge');
 335     @header('Cache-Control: no-store, no-cache, must-revalidate');
 336     @header('Cache-Control: post-check=0, pre-check=0', false);
 337     @header('Pragma: no-cache');
 338     @header('Expires: Mon, 20 Aug 1969 09:23:00 GMT');
 339     @header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
 340
 341     echo '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">';
 342     echo '<html dir="'.(right_to_left() ? 'rtl' : 'ltr').'">
 343           <head>
 344           <link rel="shortcut icon" href="theme/clean/pix/favicon.ico" />';
 345
 346     echo '<link rel="stylesheet" type="text/css" href="'.$CFG->wwwroot.'/install/css.php" />
 347           <title>'.get_string('installation', 'install') . moodle_page::TITLE_SEPARATOR . 'Moodle '.$CFG->target_release.'</title>
 348           <meta name="robots" content="noindex">
 349           <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
 350           <meta http-equiv="pragma" content="no-cache" />
 351           <meta http-equiv="expires" content="0" />';
 352
 353     echo '</head><body class="notloggedin">
 354             <div id="page" class="mt-0 container stage'.$config->stage.'">
 355                 <div id="page-header">
 356                     <div id="header" class=" clearfix">
 357                         <h1 class="headermain">'.get_string('installation','install').'</h1>
 358                         <div class="headermenu">&nbsp;</div>
 359                     </div>
 360                     <div class="bg-light p-3 mb-3"><h3 class="m-0">'.$stagename.'</h3></div>
 361                 </div>
 362           <!-- END OF HEADER -->
 363           <div id="installdiv">';
 364
 365     echo '<h2>'.$heading.'</h2>';
 366
 367     if ($stagetext !== '') {
 368         echo '<div class="alert ' . $stageclass . '">';
 369         echo $stagetext;
 370         echo '</div>';
 371     }
 372     // main
 373     echo '<form id="installform" method="post" action="install.php"><fieldset>';
 374     foreach ($config as $name=>$value) {
 375         echo '<input type="hidden" name="'.$name.'" value="'.s($value).'" />';
 376     }
 377 }
 378
 379 /**
 380  * Prints installation page header, we can not use weblib yet in installer.
 381  *
 382  * @global object
 383  * @param stdClass $config
 384  * @param bool $reload print reload button instead of next
 385  * @return void
 386  */
 387 function install_print_footer($config, $reload=false) {
 388     global $CFG;
 389
 390     if ($config->stage > INSTALL_WELCOME) {
 391         $first = '<input type="submit" id="previousbutton" class="btn btn-secondary flex-grow-0 ml-auto" name="previous" value="&laquo; '.s(get_string('previous')).'" />';
 392     } else {
 393         $first = '<input type="submit" id="previousbutton" class="btn btn-secondary flex-grow-0  ml-auto" name="next" value="'.s(get_string('reload')).'" />';
 394         $first .= '<script type="text/javascript">
 395 //<![CDATA[
 396     var first = document.getElementById("previousbutton");
 397     first.style.visibility = "hidden";
 398 //]]>
 399 </script>
 400 ';
 401     }
 402
 403     if ($reload) {
 404         $next = '<input type="submit" id="nextbutton" class="btn btn-primary ml-1 flex-grow-0 mr-auto" name="next" value="'.s(get_string('reload')).'" />';
 405     } else {
 406         $next = '<input type="submit" id="nextbutton" class="btn btn-primary ml-1 flex-grow-0 mr-auto" name="next" value="'.s(get_string('next')).' &raquo;" />';
 407     }
 408
 409     echo '</fieldset><div id="nav_buttons" class="mb-3 w-100 d-flex">'.$first.$next.'</div>';
 410
 411     $homelink  = '<div class="sitelink">'.
 412        '<a title="Moodle '. $CFG->target_release .'" href="http://docs.moodle.org/en/Administrator_documentation" onclick="this.target=\'_blank\'">'.
 413        '<img src="pix/moodlelogo.png" alt="'.get_string('moodlelogo').'" /></a></div>';
 414
 415     echo '</form></div>';
 416     echo '<div id="page-footer">'.$homelink.'</div>';
 417     echo '</div></body></html>';
 418 }
 419
 420 /**
 421  * Install Moodle DB,
 422  * config.php must exist, there must not be any tables in db yet.
 423  *
 424  * @param array $options adminpass is mandatory
 425  * @param bool $interactive
 426  * @return void
 427  */
 428 function install_cli_database(array $options, $interactive) {
 429     global $CFG, $DB;
 430     require_once($CFG->libdir.'/environmentlib.php');
 431     require_once($CFG->libdir.'/upgradelib.php');
 432
 433     // show as much debug as possible
 434     @error_reporting(E_ALL | E_STRICT);
 435     @ini_set('display_errors', '1');
 436     $CFG->debug = (E_ALL | E_STRICT);
 437     $CFG->debugdisplay = true;
 438     $CFG->debugdeveloper = true;
 439
 440     $CFG->version = '';
 441     $CFG->release = '';
 442     $CFG->branch = '';
 443
 444     $version = null;
 445     $release = null;
 446     $branch = null;
 447
 448     // read $version and $release
 449     require($CFG->dirroot.'/version.php');
 450
 451     if ($DB->get_tables() ) {
 452         cli_error(get_string('clitablesexist', 'install'));
 453     }
 454
 455     if (empty($options['adminpass'])) {
 456         cli_error('Missing required admin password');
 457     }
 458
 459     // test environment first
 460     list($envstatus, $environment_results) = check_moodle_environment(normalize_version($release), ENV_SELECT_RELEASE);
 461     if (!$envstatus) {
 462         $errors = environment_get_errors($environment_results);
 463         cli_heading(get_string('environment', 'admin'));
 464         foreach ($errors as $error) {
 465             list($info, $report) = $error;
 466             echo "!! $info !!\n$report\n\n";
 467         }
 468         exit(1);
 469     }
 470
 471     if (!$DB->setup_is_unicodedb()) {
 472         if (!$DB->change_db_encoding()) {
 473             // If could not convert successfully, throw error, and prevent installation
 474             cli_error(get_string('unicoderequired', 'admin'));
 475         }
 476     }
 477
 478     if ($interactive) {
 479         cli_separator();
 480         cli_heading(get_string('databasesetup'));
 481     }
 482
 483     // install core
 484     install_core($version, true);
 485     set_config('release', $release);
 486     set_config('branch', $branch);
 487
 488     if (PHPUNIT_TEST) {
 489         // mark as test database as soon as possible
 490         set_config('phpunittest', 'na');
 491     }
 492
 493     // install all plugins types, local, etc.
 494     upgrade_noncore(true);
 495
 496     // set up admin user password
 497     $DB->set_field('user', 'password', hash_internal_user_password($options['adminpass']), array('username' => 'admin'));
 498
 499     // Set the admin email address if specified.
 500     if (isset($options['adminemail'])) {
 501         $DB->set_field('user', 'email', $options['adminemail'], array('username' => 'admin'));
 502     }
 503
 504     // rename admin username if needed
 505     if (isset($options['adminuser']) and $options['adminuser'] !== 'admin' and $options['adminuser'] !== 'guest') {
 506         $DB->set_field('user', 'username', $options['adminuser'], array('username' => 'admin'));
 507     }
 508
 509     // Set the support email address if specified.
 510     if (!empty($options['supportemail'])) {
 511         set_config('supportemail', $options['supportemail']);
 512     } else if (!empty($options['adminemail'])) {
 513         set_config('supportemail', $options['adminemail']);
 514     }
 515
 516     // indicate that this site is fully configured
 517     set_config('rolesactive', 1);
 518     upgrade_finished();
 519
 520     // log in as admin - we need do anything when applying defaults
 521     \core\session\manager::set_user(get_admin());
 522
 523     // Apply all default settings.
 524     admin_apply_default_settings(NULL, true);
 525     set_config('registerauth', '');
 526
 527     // set the site name
 528     if (isset($options['shortname']) and $options['shortname'] !== '') {
 529         $DB->set_field('course', 'shortname', $options['shortname'], array('format' => 'site'));
 530     }
 531     if (isset($options['fullname']) and $options['fullname'] !== '') {
 532         $DB->set_field('course', 'fullname', $options['fullname'], array('format' => 'site'));
 533     }
 534     if (isset($options['summary'])) {
 535         $DB->set_field('course', 'summary', $options['summary'], array('format' => 'site'));
 536     }
 537
 538     // Redirect to site registration on first login.
 539     set_config('registrationpending', 1);
 540
 541     // Apply default preset, if it is defined in $CFG and has a valid value.
 542     if (!empty($CFG->setsitepresetduringinstall)) {
 543         \core_adminpresets\helper::change_default_preset($CFG->setsitepresetduringinstall);
 544     }
 545 }