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316 lines
9.9 KiB
316 lines
9.9 KiB
<?php
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/*
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==============================================================================
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Dokeos - elearning and course management software
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Copyright (c) 2004-2007 Dokeos S.A.
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Copyright (c) 2003 Ghent University (UGent)
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Copyright (c) 2001 Universite catholique de Louvain (UCL)
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Copyright (c) various contributors
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For a full list of contributors, see "credits.txt".
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The full license can be read in "license.txt".
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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See the GNU General Public License for more details.
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Contact address: Dokeos, 44 rue des palais, B-1030 Brussels, Belgium
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Mail: info@dokeos.com
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==============================================================================
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*/
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/**
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==============================================================================
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* Update the Dokeos database from an older version
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* Notice : This script has to be included by index.php or update_courses.php
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*
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* @package dokeos.install
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* @todo
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* - conditional changing of tables. Currently we execute for example
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* ALTER TABLE `$dbNameForm`.`cours` instructions without checking wether this is necessary.
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* - reorganise code into functions
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* @todo use database library
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==============================================================================
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*/
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//load helper functions
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require_once("install_upgrade.lib.php");
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//remove memory and time limits as much as possible as this might be a long process...
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if(function_exists('ini_set'))
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{
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ini_set('memory_limit',-1);
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ini_set('max_execution_time',0);
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}else{
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error_log('Update-db script: could not change memory and time limits',0);
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}
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/*
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==============================================================================
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MAIN CODE
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==============================================================================
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*/
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//check if we come from index.php or update_courses.php - otherwise display error msg
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if (defined('DOKEOS_INSTALL') || defined('DOKEOS_COURSE_UPDATE'))
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{
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//check if the current Dokeos install is elligible for update
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if (!file_exists('../inc/conf/configuration.php'))
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{
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echo '<b>'.get_lang('Error').' !</b> Dokeos '.implode('|', $updateFromVersion).' '.get_lang('HasNotBeenFound').'.<br><br>
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'.get_lang('PleasGoBackToStep1').'.
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<p><input type="submit" name="step1" value="< '.get_lang('Back').'"></p>
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</td></tr></table></form></body></html>';
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exit ();
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}
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//get_config_param() comes from install_functions.inc.php and
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//actually gets the param from
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$_configuration['db_glue'] = get_config_param('dbGlu');
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if ($singleDbForm)
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{
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$_configuration['table_prefix'] = get_config_param('courseTablePrefix');
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$_configuration['main_database'] = get_config_param('mainDbName');
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$_configuration['db_prefix'] = get_config_param('dbNamePrefix');
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}
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$dbScormForm = eregi_replace('[^a-z0-9_-]', '', $dbScormForm);
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if (!empty ($dbPrefixForm) && !ereg('^'.$dbPrefixForm, $dbScormForm))
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{
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$dbScormForm = $dbPrefixForm.$dbScormForm;
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}
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if (empty ($dbScormForm) || $dbScormForm == 'mysql' || $dbScormForm == $dbPrefixForm)
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{
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$dbScormForm = $dbPrefixForm.'scorm';
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}
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$res = @mysql_connect($dbHostForm, $dbUsernameForm, $dbPassForm);
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//if error on connection to the database, show error and exit
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if ($res === false)
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{
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//$no = mysql_errno();
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//$msg = mysql_error();
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//echo '<hr>['.$no.'] - '.$msg.'<hr>';
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echo get_lang('DBServerDoesntWorkOrLoginPassIsWrong').'.<br /><br />' .
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' '.get_lang('PleaseCheckTheseValues').' :<br /><br />
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<b>'.get_lang('DBHost').'</b> : '.$dbHostForm.'<br />
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<b>'.get_lang('DBLogin').'</b> : '.$dbUsernameForm.'<br />
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<b>'.get_lang('DBPassword').'</b> : '.$dbPassForm.'<br /><br />
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'.get_lang('PleaseGoBackToStep').' '. (defined('DOKEOS_INSTALL') ? '3' : '1').'.
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<p><input type="submit" name="step'. (defined('DOKEOS_INSTALL') ? '3' : '1').'" value="< '.get_lang('Back').'"></p>
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</td></tr></table></form></body></html>';
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exit ();
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}
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// The Dokeos system has not been designed to use special SQL modes that were introduced since MySQL 5
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@mysql_query("set session sql_mode='';");
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$dblistres = mysql_list_dbs();
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$dblist = array();
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while ($row = mysql_fetch_object($dblistres)) {
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$dblist[] = $row->Database;
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}
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/*
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-----------------------------------------------------------
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Normal upgrade procedure:
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start by updating main, statistic, user databases
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-----------------------------------------------------------
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*/
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//if this script has been included by index.php, not update_courses.php, so
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// that we want to change the main databases as well...
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$only_test = false;
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$log = 0;
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if (defined('DOKEOS_INSTALL'))
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{
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if ($singleDbForm)
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{
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$dbStatsForm = $dbNameForm;
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$dbScormForm = $dbNameForm;
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$dbUserForm = $dbNameForm;
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}
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/**
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* Update the databases "pre" migration
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*/
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include ("../lang/english/create_course.inc.php");
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if ($languageForm != 'english')
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{
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//languageForm has been escaped in index.php
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include ("../lang/$languageForm/create_course.inc.php");
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}
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//get the main queries list (m_q_list)
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$m_q_list = get_sql_file_contents('migrate-db-1.8.2-1.8.3-pre.sql','main');
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if(count($m_q_list)>0)
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{
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//now use the $m_q_list
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/**
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* We connect to the right DB first to make sure we can use the queries
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* without a database name
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*/
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if(strlen($dbNameForm)>40){
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error_log('Database name '.$dbNameForm.' is too long, skipping',0);
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}elseif(!in_array($dbNameForm,$dblist)){
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error_log('Database '.$dbNameForm.' was not found, skipping',0);
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}else{
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mysql_select_db($dbNameForm);
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foreach($m_q_list as $query){
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if($only_test){
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error_log("mysql_query($dbNameForm,$query)",0);
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}else{
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$res = mysql_query($query);
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if($log)
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{
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error_log("In $dbNameForm, executed: $query",0);
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}
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}
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}
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}
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}
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//get the stats queries list (s_q_list)
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$s_q_list = get_sql_file_contents('migrate-db-1.8.2-1.8.3-pre.sql','stats');
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if(count($s_q_list)>0)
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{
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//now use the $s_q_list
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/**
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* We connect to the right DB first to make sure we can use the queries
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* without a database name
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*/
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if(strlen($dbStatsForm)>40){
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error_log('Database name '.$dbStatsForm.' is too long, skipping',0);
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}elseif(!in_array($dbStatsForm,$dblist)){
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error_log('Database '.$dbStatsForm.' was not found, skipping',0);
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}else{
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mysql_select_db($dbStatsForm);
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foreach($s_q_list as $query){
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if($only_test){
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error_log("mysql_query($dbStatsForm,$query)",0);
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}else{
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$res = mysql_query($query);
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if($log)
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{
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error_log("In $dbStatsForm, executed: $query",0);
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}
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}
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}
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}
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}
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//get the user queries list (u_q_list)
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$u_q_list = get_sql_file_contents('migrate-db-1.8.2-1.8.3-pre.sql','user');
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if(count($u_q_list)>0)
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{
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//now use the $u_q_list
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/**
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* We connect to the right DB first to make sure we can use the queries
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* without a database name
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*/
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if(strlen($dbUserForm)>40){
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error_log('Database name '.$dbUserForm.' is too long, skipping',0);
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}elseif(!in_array($dbUserForm,$dblist)){
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error_log('Database '.$dbUserForm.' was not found, skipping',0);
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}else{
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mysql_select_db($dbUserForm);
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foreach($u_q_list as $query){
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if($only_test){
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error_log("mysql_query($dbUserForm,$query)",0);
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error_log("In $dbUserForm, executed: $query",0);
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}else{
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$res = mysql_query($query);
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}
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}
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}
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}
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//the SCORM database doesn't need a change in the pre-migrate part - ignore
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}
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/*
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-----------------------------------------------------------
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Update the Dokeos course databases
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this part can be accessed in two ways:
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- from the normal upgrade process
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- from the script update_courses.php,
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which is used to upgrade more than MAX_COURSE_TRANSFER courses
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Every time this script is accessed, only
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MAX_COURSE_TRANSFER courses are upgraded.
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-----------------------------------------------------------
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*/
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$prefix = '';
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if ($singleDbForm)
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{
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$prefix = $_configuration['table_prefix'];
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}
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//get the courses databases queries list (c_q_list)
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$c_q_list = get_sql_file_contents('migrate-db-1.8.2-1.8.3-pre.sql','course');
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if(count($c_q_list)>0)
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{
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//get the courses list
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if(strlen($dbNameForm)>40){
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error_log('Database name '.$dbNameForm.' is too long, skipping',0);
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}elseif(!in_array($dbNameForm,$dblist)){
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error_log('Database '.$dbNameForm.' was not found, skipping',0);
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}else{
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mysql_select_db($dbNameForm);
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$res = mysql_query("SELECT code,db_name,directory,course_language FROM course WHERE target_course_code IS NULL");
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if($res===false){die('Error while querying the courses list in update_db.inc.php');}
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if(mysql_num_rows($res)>0)
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{
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$i=0;
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//while( ($i < MAX_COURSE_TRANSFER) && ($row = mysql_fetch_array($res)))
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while($row = mysql_fetch_array($res))
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{
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$list[] = $row;
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$i++;
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}
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foreach($list as $row_course)
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{
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//now use the $c_q_list
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/**
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* We connect to the right DB first to make sure we can use the queries
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* without a database name
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*/
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if (!$singleDbForm) //otherwise just use the main one
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{
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mysql_select_db($row_course['db_name']);
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}
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foreach($c_q_list as $query)
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{
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if ($singleDbForm) //otherwise just use the main one
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{
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$query = preg_replace('/^(UPDATE|ALTER TABLE|CREATE TABLE|DROP TABLE|INSERT INTO|DELETE FROM)\s+(\w*)(.*)$/',"$1 $prefix{$row_course['db_name']}_$2$3",$query);
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}
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if($only_test)
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{
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error_log("mysql_query(".$row_course['db_name'].",$query)",0);
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}else{
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$res = mysql_query($query);
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if($log)
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{
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error_log("In ".$row_course['db_name'].", executed: $query",0);
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}
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}
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}
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}
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}
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}
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}
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}
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else
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{
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echo 'You are not allowed here !';
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}
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?>
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