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($dataroot)) {
  92         // file with the same name exists
  93         return false;
  94     }
  95
  96     umask(0000);
  97     if (!file_exists($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 $ex) {
 195         return get_string($ex->errorcode, $ex->module, $ex->a).'<br />'.$ex->debuginfo;
 196     }
 197 }
 198
 199 /**
 200  * Returns content of config.php file.
 201  *
 202  * Uses PHP_EOL for generating proper end of lines for the given platform.
 203  *
 204  * @param moodle_database $database database instance
 205  * @param object $cfg copy of $CFG
 206  * @return string
 207  */
 208 function install_generate_configphp($database, $cfg) {
 209     $configphp = '<?php  // Moodle configuration file' . PHP_EOL . PHP_EOL;
 210
 211     $configphp .= 'unset($CFG);' . PHP_EOL;
 212     $configphp .= 'global $CFG;' . PHP_EOL;
 213     $configphp .= '$CFG = new stdClass();' . PHP_EOL . PHP_EOL; // prevent PHP5 strict warnings
 214
 215     $dbconfig = $database->export_dbconfig();
 216
 217     foreach ($dbconfig as $key=>$value) {
 218         $key = str_pad($key, 9);
 219         $configphp .= '$CFG->'.$key.' = '.var_export($value, true) . ';' . PHP_EOL;
 220     }
 221     $configphp .= PHP_EOL;
 222
 223     $configphp .= '$CFG->wwwroot   = '.var_export($cfg->wwwroot, true) . ';' . PHP_EOL ;
 224
 225     $configphp .= '$CFG->dataroot  = '.var_export($cfg->dataroot, true) . ';' . PHP_EOL;
 226
 227     $configphp .= '$CFG->admin     = '.var_export($cfg->admin, true) . ';' . PHP_EOL . PHP_EOL;
 228
 229     if (empty($cfg->directorypermissions)) {
 230         $chmod = '02777';
 231     } else {
 232         $chmod = '0' . decoct($cfg->directorypermissions);
 233     }
 234     $configphp .= '$CFG->directorypermissions = ' . $chmod . ';' . PHP_EOL . PHP_EOL;
 235
 236     $configphp .= '$CFG->passwordsaltmain = '.var_export(complex_random_string(), true) . ';' . PHP_EOL . PHP_EOL;
 237
 238     $configphp .= 'require_once(dirname(__FILE__) . \'/lib/setup.php\');' . PHP_EOL . PHP_EOL;
 239     $configphp .= '// There is no php closing tag in this file,' . PHP_EOL;
 240     $configphp .= '// it is intentional because it prevents trailing whitespace problems!' . PHP_EOL;
 241
 242     return $configphp;
 243 }
 244
 245 /**
 246  * Prints complete help page used during installation.
 247  * Does not return.
 248  *
 249  * @global object
 250  * @param string $help
 251  */
 252 function install_print_help_page($help) {
 253     global $CFG, $OUTPUT; //TODO: MUST NOT USE $OUTPUT HERE!!!
 254
 255     @header('Content-Type: text/html; charset=UTF-8');
 256     @header('Cache-Control: no-store, no-cache, must-revalidate');
 257     @header('Cache-Control: post-check=0, pre-check=0', false);
 258     @header('Pragma: no-cache');
 259     @header('Expires: Mon, 20 Aug 1969 09:23:00 GMT');
 260     @header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
 261
 262     echo '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">';
 263     echo '<html dir="'.(right_to_left() ? 'rtl' : 'ltr').'">
 264           <head>
 265           <link rel="shortcut icon" href="theme/standard/pix/favicon.ico" />
 266           <link rel="stylesheet" type="text/css" href="'.$CFG->wwwroot.'/install/css.php" />
 267           <title>'.get_string('installation','install').'</title>
 268           <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
 269           <meta http-equiv="pragma" content="no-cache" />
 270           <meta http-equiv="expires" content="0" />';
 271
 272     echo '</head><body>';
 273     switch ($help) {
 274         case 'phpversionhelp':
 275             print_string($help, 'install', phpversion());
 276             break;
 277         case 'memorylimithelp':
 278             print_string($help, 'install', @ini_get('memory_limit'));
 279             break;
 280         default:
 281             print_string($help, 'install');
 282     }
 283     echo $OUTPUT->close_window_button(); //TODO: MUST NOT USE $OUTPUT HERE!!!
 284     echo '</body></html>';
 285     die;
 286 }
 287
 288 /**
 289  * Prints installation page header, we can no use weblib yet in installer.
 290  *
 291  * @global object
 292  * @param array $config
 293  * @param string $stagename
 294  * @param string $heading
 295  * @param string $stagetext
 296  * @return void
 297  */
 298 function install_print_header($config, $stagename, $heading, $stagetext) {
 299     global $CFG;
 300
 301     @header('Content-Type: text/html; charset=UTF-8');
 302     @header('Cache-Control: no-store, no-cache, must-revalidate');
 303     @header('Cache-Control: post-check=0, pre-check=0', false);
 304     @header('Pragma: no-cache');
 305     @header('Expires: Mon, 20 Aug 1969 09:23:00 GMT');
 306     @header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
 307
 308     echo '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">';
 309     echo '<html dir="'.(right_to_left() ? 'rtl' : 'ltr').'">
 310           <head>
 311           <link rel="shortcut icon" href="theme/standard/pix/favicon.ico" />';
 312
 313     echo '<link rel="stylesheet" type="text/css" href="'.$CFG->wwwroot.'/install/css.php" />
 314           <title>'.get_string('installation','install').' - Moodle '.$CFG->target_release.'</title>
 315           <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
 316           <meta http-equiv="pragma" content="no-cache" />
 317           <meta http-equiv="expires" content="0" />';
 318
 319     echo '</head><body class="notloggedin">
 320             <div id="page" class="stage'.$config->stage.'">
 321                 <div id="page-header">
 322                     <div id="header" class=" clearfix">
 323                         <h1 class="headermain">'.get_string('installation','install').'</h1>
 324                         <div class="headermenu">&nbsp;</div>
 325                     </div>
 326                     <div class="navbar clearfix">
 327                         <div class="breadcrumb">
 328                             <ul><li class="first">'.$stagename.'</li></ul>
 329                         </div>
 330                         <div class="navbutton">&nbsp;</div>
 331                     </div>
 332                 </div>
 333           <!-- END OF HEADER -->
 334           <div id="installdiv">';
 335
 336     echo '<h2>'.$heading.'</h2>';
 337
 338     if ($stagetext !== '') {
 339         echo '<div class="stage generalbox box">';
 340         echo $stagetext;
 341         echo '</div>';
 342     }
 343     // main
 344     echo '<form id="installform" method="post" action="install.php"><fieldset>';
 345     foreach ($config as $name=>$value) {
 346         echo '<input type="hidden" name="'.$name.'" value="'.s($value).'" />';
 347     }
 348 }
 349
 350 /**
 351  * Prints installation page header, we can no use weblib yet in isntaller.
 352  *
 353  * @global object
 354  * @param array $config
 355  * @param bool $reload print reload button instead of next
 356  * @return void
 357  */
 358 function install_print_footer($config, $reload=false) {
 359     global $CFG;
 360
 361     if ($config->stage > INSTALL_WELCOME) {
 362         $first = '<input type="submit" id="previousbutton" name="previous" value="&laquo; '.s(get_string('previous')).'" />';
 363     } else {
 364         $first = '<input type="submit" id="previousbutton" name="next" value="'.s(get_string('reload')).'" />';
 365         $first .= '<script type="text/javascript">
 366 //<![CDATA[
 367     var first = document.getElementById("previousbutton");
 368     first.style.visibility = "hidden";
 369 //]]>
 370 </script>
 371 ';
 372     }
 373
 374     if ($reload) {
 375         $next = '<input type="submit" id="nextbutton" name="next" value="'.s(get_string('reload')).'" />';
 376     } else {
 377         $next = '<input type="submit" id="nextbutton" name="next" value="'.s(get_string('next')).' &raquo;" />';
 378     }
 379
 380     echo '</fieldset><fieldset id="nav_buttons">'.$first.$next.'</fieldset>';
 381
 382     $homelink  = '<div class="sitelink">'.
 383        '<a title="Moodle '. $CFG->target_release .'" href="http://docs.moodle.org/en/Administrator_documentation" onclick="this.target=\'_blank\'">'.
 384        '<img style="width:100px;height:30px" src="pix/moodlelogo.gif" alt="moodlelogo" /></a></div>';
 385
 386     echo '</form></div>';
 387     echo '<div id="footer"><hr />'.$homelink.'</div>';
 388     echo '</div></body></html>';
 389 }
 390
 391 /**
 392  * Install Moodle DB,
 393  * config.php must exist, there must not be any tables in db yet.
 394  *
 395  * @param array $options adminpass is mandatory
 396  * @param bool $interactive
 397  * @return void
 398  */
 399 function install_cli_database(array $options, $interactive) {
 400     global $CFG, $DB;
 401     require_once($CFG->libdir.'/environmentlib.php');
 402     require_once($CFG->libdir.'/upgradelib.php');
 403
 404     // show as much debug as possible
 405     @error_reporting(1023);
 406     @ini_set('display_errors', '1');
 407     $CFG->debug = 38911;
 408     $CFG->debugdisplay = true;
 409
 410     $CFG->version = '';
 411     $CFG->release = '';
 412     $version = null;
 413     $release = null;
 414
 415     // read $version and $release
 416     require($CFG->dirroot.'/version.php');
 417
 418     if ($DB->get_tables() ) {
 419         cli_error(get_string('clitablesexist', 'install'));
 420     }
 421
 422     if (empty($options['adminpass'])) {
 423         cli_error('Missing required admin password');
 424     }
 425
 426     // test environment first
 427     list($envstatus, $environment_results) = check_moodle_environment(normalize_version($release), ENV_SELECT_RELEASE);
 428     if (!$envstatus) {
 429         $errors = environment_get_errors($environment_results);
 430         cli_heading(get_string('environment', 'admin'));
 431         foreach ($errors as $error) {
 432             list($info, $report) = $error;
 433             echo "!! $info !!\n$report\n\n";
 434         }
 435         exit(1);
 436     }
 437
 438     if (!$DB->setup_is_unicodedb()) {
 439         if (!$DB->change_db_encoding()) {
 440             // If could not convert successfully, throw error, and prevent installation
 441             cli_error(get_string('unicoderequired', 'admin'));
 442         }
 443     }
 444
 445     if ($interactive) {
 446         cli_separator();
 447         cli_heading(get_string('databasesetup'));
 448     }
 449
 450     // install core
 451     install_core($version, true);
 452     set_config('release', $release);
 453
 454     // install all plugins types, local, etc.
 455     upgrade_noncore(true);
 456
 457     // set up admin user password
 458     $DB->set_field('user', 'password', hash_internal_user_password($options['adminpass']), array('username' => 'admin'));
 459
 460     // rename admin username if needed
 461     if (isset($options['adminuser']) and $options['adminuser'] !== 'admin' and $options['adminuser'] !== 'guest') {
 462         $DB->set_field('user', 'username', $options['adminuser'], array('username' => 'admin'));
 463     }
 464
 465     // indicate that this site is fully configured
 466     set_config('rolesactive', 1);
 467     upgrade_finished();
 468
 469     // log in as admin - we need do anything when applying defaults
 470     $admins = get_admins();
 471     $admin = reset($admins);
 472     session_set_user($admin);
 473
 474     // apply all default settings, do it twice to fill all defaults - some settings depend on other setting
 475     admin_apply_default_settings(NULL, true);
 476     admin_apply_default_settings(NULL, true);
 477     set_config('registerauth', '');
 478
 479     // set the site name
 480     if (isset($options['shortname']) and $options['shortname'] !== '') {
 481         $DB->set_field('course', 'shortname', $options['shortname'], array('format' => 'site'));
 482     }
 483     if (isset($options['fullname']) and $options['fullname'] !== '') {
 484         $DB->set_field('course', 'fullname', $options['fullname'], array('format' => 'site'));
 485     }
 486 }