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