ITSSTOOLS/setup/setuppage.class.inc.php

<?php
// Copyright (C) 2010 Combodo SARL
//
//   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; version 3 of the License.
//
//   This program is distributed in the hope that it will be useful,
//   but WITHOUT ANY WARRANTY; without even the implied warranty of
//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//   GNU General Public License for more details.
//
//   You should have received a copy of the GNU General Public License
//   along with this program; if not, write to the Free Software
//   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

/**
 * Web page used for displaying the login form
 *
 * @author      Erwan Taloc <erwan.taloc@combodo.com>
 * @author      Romain Quetiez <romain.quetiez@combodo.com>
 * @author      Denis Flaven <denis.flaven@combodo.com>
 * @license     http://www.opensource.org/licenses/gpl-3.0.html LGPL
 */

require_once(APPROOT."/application/nicewebpage.class.inc.php");
define('INSTALL_LOG_FILE', APPROOT.'/setup.log');

define ('MODULE_ACTION_OPTIONAL', 1);
define ('MODULE_ACTION_MANDATORY', 2);
define ('MODULE_ACTION_IMPOSSIBLE', 3);

date_default_timezone_set('Europe/Paris');
class SetupWebPage extends NiceWebPage
{
    public function __construct($sTitle)
    {
        parent::__construct($sTitle);
   		$this->add_linked_script("../js/jquery.blockUI.js");
   		$this->add_linked_script("./setup.js");
        $this->add_style("
body {
	background-color: #eee;
	margin: 0;
	padding: 0;
	font-size: 10pt;
	overflow-y: auto;
}
#header {
	width: 600px;
	margin-left: auto;
	margin-right: auto;
	margin-top: 50px;
	padding: 20px;
	background: #f6f6f1;
	height: 54px;
	border-top: 1px solid #000;
	border-left: 1px solid #000;
	border-right: 1px solid #000;
}
#header img {
	border: 0;
	vertical-align: middle;
	margin-right: 20px;
}
#header h1 {
	vertical-align: middle;
	height: 54px;
	noline-height: 54px;
	margin: 0;
}
#setup {
	width: 600px;
	margin-left: auto;
	margin-right: auto;
	padding: 20px;
	background-color: #fff;
	border-left: 1px solid #000;
	border-right: 1px solid #000;
	border-bottom: 1px solid #000;
}
.center {
	text-align: center;
}

h1 {
	color: #1C94C4;
	font-size: 16pt;
}
h2 {
	color: #000;
	font-size: 14pt;
}
h3 {
	color: #1C94C4;
	font-size: 12pt;
	font-weight: bold;
}
.next {
	width: 100%;
	text-align: right;
}
.v-spacer {
	padding-top: 1em;
}
button {
	margin-top: 1em;
	padding-left: 1em;
	padding-right: 1em;
}
p.info {
	padding-left: 50px;
	background: url(../images/info-mid.png) no-repeat left -5px;
	min-height: 48px;
}
p.ok {
	padding-left: 50px;
	background: url(../images/clean-mid.png) no-repeat left -8px;
	min-height: 48px;
}
p.warning {
	padding-left: 50px;
	background: url(../images/messagebox_warning-mid.png) no-repeat left -5px;
	min-height: 48px;
}
p.error {
	padding-left: 50px;
	background: url(../images/stop-mid.png) no-repeat left -5px;
	min-height: 48px;
}
td.label {
	text-align: left;
}
label.read-only {
	color: #666;
	cursor: text;
}
td.input {
	text-align: left;
}
table.formTable {
	border: 0;
	cellpadding: 2px;
	cellspacing: 0;
}
.wizlabel, .wizinput {
	color: #000;
	font-size: 10pt;
}
.wizhelp {
	color: #333;
	font-size: 8pt;
}
#progress { 
    border:1px solid #000000; 
    width: 180px; 
    height: 20px; 
    line-height: 20px; 
    text-align: center;
    margin: 5px;
}
		");
	}
	public function info($sText)
	{
		$this->add("<p class=\"info\">$sText</p>\n");
		$this->log_info($sText);
	}
	
	public function ok($sText)
	{
		$this->add("<p class=\"ok\">$sText</p>\n");
		$this->log_ok($sText);
	}
	
	public function warning($sText)
	{
		$this->add("<p class=\"warning\">$sText</p>\n");
		$this->log_warning($sText);
	}
	
	public function error($sText)
	{
		$this->add("<p class=\"error\">$sText</p>\n");
		$this->log_error($sText);
	}
	
	public function form($aData)
	{
		$this->add("<table class=\"formTable\">\n");
		foreach($aData as $aRow)
		{
			$this->add("<tr>\n");
			if (isset($aRow['label']) && isset($aRow['input']) && isset($aRow['help']))
			{
				$this->add("<td class=\"wizlabel\">{$aRow['label']}</td>\n");
				$this->add("<td class=\"wizinput\">{$aRow['input']}</td>\n");
				$this->add("<td class=\"wizhelp\">{$aRow['help']}</td>\n");
			}
			else if (isset($aRow['label']) && isset($aRow['help']))
			{
				$this->add("<td colspan=\"2\" class=\"wizlabel\">{$aRow['label']}</td>\n");
				$this->add("<td class=\"wizhelp\">{$aRow['help']}</td>\n");
			}
			else if (isset($aRow['label']) && isset($aRow['input']))
			{
				$this->add("<td class=\"wizlabel\">{$aRow['label']}</td>\n");
				$this->add("<td colspan=\"2\" class=\"wizinput\">{$aRow['input']}</td>\n");
			}
			else if (isset($aRow['label']))
			{
				$this->add("<td colspan=\"3\" class=\"wizlabel\">{$aRow['label']}</td>\n");
			}
			$this->add("</tr>\n");
		}
		$this->add("</table>\n");
	}
	
	public function output()
	{
		$this->s_content = "<div id=\"header\"><h1><a href=\"http://www.combodo.com/itop\" target=\"_blank\"><img title=\"iTop by Combodo\" src=\"../images/itop-logo.png\"></a>&nbsp;{$this->s_title}</h1>\n</div><div id=\"setup\">{$this->s_content}\n</div>\n";
		return parent::output();
	}
	
	public static function log_error($sText)
	{
		self::log("Error - ".$sText);
	}

	public static function log_warning($sText)
	{
		self::log("Warning - ".$sText);
	}

	public static function log_info($sText)
	{
		self::log("Info - ".$sText);
	}

	public static function log_ok($sText)
	{
		self::log("Ok - ".$sText);
	}

	public static function log($sText)
	{
		$hLogFile = @fopen(INSTALL_LOG_FILE, 'a');
		if ($hLogFile !== false)
		{
			$sDate = date('Y-m-d H:i:s');
			fwrite($hLogFile, "$sDate - $sText\n");
			fclose($hLogFile);
		}
	}

	static $m_aModuleArgs = array(
		'label' => 'One line description shown during the interactive setup',
		'dependencies' => 'array of module ids',
		'mandatory' => 'boolean',
		'visible' => 'boolean',
		'datamodel' =>  'array of data model files',
		'dictionary' => 'array of dictionary files',
		'data.struct' => 'array of structural data files',
		'data.sample' => 'array of sample data files',
		'doc.manual_setup' => 'url',
		'doc.more_information' => 'url',
	);
	
	static $m_aModules = array();
	
	// All the entries below are list of file paths relative to the module directory
	static $m_aFilesList = array('datamodel', 'webservice', 'dictionary', 'data.struct', 'data.sample');

	static $m_sModulePath = null;
	public static function SetModulePath($sModulePath)
	{
		self::$m_sModulePath = $sModulePath;
	}

	public static function AddModule($sFilePath, $sId, $aArgs)
	{
		if (!array_key_exists('itop_version', $aArgs))
		{
			// Assume 1.0.2
			$aArgs['itop_version'] = '1.0.2';
		}
		foreach (self::$m_aModuleArgs as $sArgName => $sArgDesc)
		{
			if (!array_key_exists($sArgName, $aArgs))
			{
				throw new Exception("Module '$sId': missing argument '$sArgName'");
		   }
		}

		self::$m_aModules[$sId] = $aArgs;

		foreach(self::$m_aFilesList as $sAttribute)
		{
			if (isset(self::$m_aModules[$sId][$sAttribute]))
			{
				// All the items below are list of files, that are relative to the current file
				// being loaded, let's update their path to store path relative to the application directory
				foreach(self::$m_aModules[$sId][$sAttribute] as $idx => $sRelativePath)
				{
				self::$m_aModules[$sId][$sAttribute][$idx] = self::$m_sModulePath.'/'.$sRelativePath;
				}
			}
		}
	}
	public static function GetModules($oP = null)
	{
		// Order the modules to take into account their inter-dependencies
		$aDependencies = array();
		foreach(self::$m_aModules as $sId => $aModule)
		{
			$aDependencies[$sId] = $aModule['dependencies'];
		}
		$aOrderedModules = array();
		$iLoopCount = 1;
		while(($iLoopCount < count(self::$m_aModules)) && (count($aDependencies) > 0) )
		{
			foreach($aDependencies as $sId => $aRemainingDeps)
			{
				$bDependenciesSolved = true;
				foreach($aRemainingDeps as $sDepId)
				{
					if (!in_array($sDepId, $aOrderedModules))
					{
						$bDependenciesSolved = false;
					}
				}
				if ($bDependenciesSolved)
				{
					$aOrderedModules[] = $sId;
					unset($aDependencies[$sId]);
				}
			}
			$iLoopCount++;
		}
		if (count($aDependencies) >0)
		{
			$sHtml = "<ul><b>Warning: the following modules have unmet dependencies, and have been ignored:</b>\n";			
			foreach($aDependencies as $sId => $aDeps)
			{
				$aModule = self::$m_aModules[$sId];
				$sHtml.= "<li>{$aModule['label']} (id: $sId), depends on: ".implode(', ', $aDeps)."</li>";
			}
			$sHtml .= "</ul>\n";
			if (is_object($oP))
			{
				$oP->warning($sHtml);
			}
			else
			{
				self::log_warning($sHtml);
			}
		}
		// Return the ordered list, so that the dependencies are met...
		$aResult = array();
		foreach($aOrderedModules as $sId)
		{
			$aResult[$sId] = self::$m_aModules[$sId];
		}
		return $aResult;
	}
} // End of class

/**
 * Helper function to initialize the ORM and load the data model
 * from the given file
 * @param $sConfigFileName string The name of the configuration file to load
 * @param $bModelOnly boolean Whether or not to allow loading a data model with no corresponding DB 
 * @return none
 */    
function InitDataModel($sConfigFileName, $bModelOnly = true, $bUseCache = false)
{
	require_once(APPROOT.'/core/log.class.inc.php');
	require_once(APPROOT.'/core/kpi.class.inc.php');
	require_once(APPROOT.'/core/coreexception.class.inc.php');
	require_once(APPROOT.'/core/dict.class.inc.php');
	require_once(APPROOT.'/core/attributedef.class.inc.php');
	require_once(APPROOT.'/core/filterdef.class.inc.php');
	require_once(APPROOT.'/core/stimulus.class.inc.php');
	require_once(APPROOT.'/core/MyHelpers.class.inc.php');
	require_once(APPROOT.'/core/expression.class.inc.php');
	require_once(APPROOT.'/core/cmdbsource.class.inc.php');
	require_once(APPROOT.'/core/sqlquery.class.inc.php');
	require_once(APPROOT.'/core/dbobject.class.php');
	require_once(APPROOT.'/core/dbobjectsearch.class.php');
	require_once(APPROOT.'/core/dbobjectset.class.php');
	require_once(APPROOT.'/application/cmdbabstract.class.inc.php');
	require_once(APPROOT.'/core/userrights.class.inc.php');
	require_once(APPROOT.'/setup/moduleinstallation.class.inc.php');
	SetupWebPage::log_info("MetaModel::Startup from file '$sConfigFileName' (ModelOnly = $bModelOnly)");

	if ($bUseCache)
	{
		// Reset the cache for the first use !
		$oConfig = new Config($sConfigFileName, false);
		MetaModel::ResetCache($oConfig);
	}

	MetaModel::Startup($sConfigFileName, $bModelOnly, $bUseCache);
}

/**
 * Search (on the disk) for all defined iTop modules, load them and returns the list (as an array)
 * of the possible iTop modules to install
 * @param none
 * @return Hash A big array moduleID => ModuleData
 */
function GetAvailableModules($oP = null)
{
	clearstatcache();
	ListModuleFiles('modules');
	return SetupWebPage::GetModules($oP);
}

/**
 * Analyzes the current installation and the possibilities
 * 
 * @param $oP SetupWebPage For accessing the list of loaded modules
 * @param $sDBServer string Name/IP of the DB server
 * @param $sDBUser username for the DB server connection
 * @param $sDBPwd password for the DB server connection
 * @param $sDBName Name of the database instance
 * @param $sDBPrefix Prefix for the iTop tables in the DB instance
 * @return hash Array with the following format:
 * array =>
 *     'iTop' => array(
 *         'version_db' => ... (could be empty in case of a fresh install)
 *         'version_code => ...
 *     )
 *     <module_name> => array(
 *         'version_db' => ...  
 *         'version_code' => ...  
 *         'install' => array(
 *             'flag' => SETUP_NEVER | SETUP_OPTIONAL | SETUP_MANDATORY
 *             'message' => ...  
 *         )   
 *         'uninstall' => array(
 *             'flag' => SETUP_NEVER | SETUP_OPTIONAL | SETUP_MANDATORY
 *             'message' => ...  
 *         )   
 *         'label' => ...  
 *         'dependencies' => array(<module1>, <module2>, ...)  
 *         'visible' => true | false
 *     )
 * )
 */     
function AnalyzeInstallation($oConfig)
{
	$aRes = array(
		'iTop' => array(
			'version_db' => '',
			'version_code' => ITOP_VERSION.'.'.ITOP_REVISION,
		)
	);

	$aModules = GetAvailableModules();
	foreach($aModules as $sModuleId => $aModuleInfo)
	{
		list($sModuleName, $sModuleVersion) = GetModuleName($sModuleId);

		$sModuleAppVersion = $aModuleInfo['itop_version'];
      $aModuleInfo['version_db'] = '';
      $aModuleInfo['version_code'] = $sModuleVersion;

		if (!in_array($sModuleAppVersion, array('1.0.0', '1.0.1', '1.0.2')))
		{
			// This module is NOT compatible with the current version
      	$aModuleInfo['install'] = array(
      		'flag' => MODULE_ACTION_IMPOSSIBLE,
      		'message' => 'the module is not compatible with the current version of the application'
      	);
		}
      elseif ($aModuleInfo['mandatory'])
      {
      	$aModuleInfo['install'] = array(
      		'flag' => MODULE_ACTION_MANDATORY,
      		'message' => 'the module is part of the application'
      	);
		}
		else
		{
      	$aModuleInfo['install'] = array(
      		'flag' => MODULE_ACTION_OPTIONAL,
      		'message' => ''
      	);
		}
		$aRes[$sModuleName] = $aModuleInfo;
	}

  	try
  	{
		CMDBSource::Init($oConfig->GetDBHost(), $oConfig->GetDBUser(), $oConfig->GetDBPwd(), $oConfig->GetDBName());
		$aSelectInstall = CMDBSource::QueryToArray("SELECT * FROM ".$oConfig->GetDBSubname()."priv_module_install");
	}
	catch (MySQLException $e)
	{
		// No database or eroneous information
		$aSelectInstall = array();
	}

	// Build the list of installed module (get the latest installation)
	//
   $aInstallByModule = array(); // array of <module> => array ('installed' => timestamp, 'version' => <version>)
	foreach ($aSelectInstall as $aInstall)
   {
   	//$aInstall['comment']; // unsused
   	//$aInstall['parent_id']; // unsused
   	$iInstalled = strtotime($aInstall['installed']);
   	$sModuleName = $aInstall['name'];
   	$sModuleVersion = $aInstall['version'];

		if ($sModuleName == 'itop')
		{
			$aRes['iTop']['version_db'] = $sModuleVersion;
			continue;
		}

      if (array_key_exists($sModuleName, $aInstallByModule))
      {
      	if ($iInstalled < $aInstallByModule[$sModuleName]['installed'])
      	{
      		continue;
      	}
		}
		$aInstallByModule[$sModuleName]['installed'] = $iInstalled;
		$aInstallByModule[$sModuleName]['version'] = $sModuleVersion;
   }

	// Adjust the list of proposed modules
	//
   foreach ($aInstallByModule as $sModuleName => $aModuleDB)
   {
   	if (!array_key_exists($sModuleName, $aRes))
   	{
   		// A module was installed, it is not proposed in the new build... skip 
   		continue;
   	}
   	$aRes[$sModuleName]['version_db'] = $aModuleDB['version'];

      if ($aRes[$sModuleName]['install']['flag'] == MODULE_ACTION_MANDATORY)
      {
      	$aRes[$sModuleName]['uninstall'] = array(
      		'flag' => MODULE_ACTION_IMPOSSIBLE,
      		'message' => 'the module is part of the application'
      	);
		}
		else
		{
      	$aRes[$sModuleName]['uninstall'] = array(
      		'flag' => MODULE_ACTION_OPTIONAL,
      		'message' => ''
      	);
		}
	}

	return $aRes;
}


/**
 * Helper function to interpret the name of a module
 * @param $sModuleId string Identifier of the module, in the form 'name/version'
 * @return array(name, version)
 */    
function GetModuleName($sModuleId)
{
	if (preg_match('!^(.*)/(.*)$!', $sModuleId, $aMatches))
	{
		$sName = $aMatches[1];
		$sVersion = $aMatches[2];
	}
	else
	{
		$sName = $sModuleId;
		$sVersion = "";
	}
	return array($sName, $sVersion);
}
/**
 * Helper function to create the database structure
 * @return boolean true on success, false otherwise
 */
function CreateDatabaseStructure(Config $oConfig, $aSelectedModules, $sMode)
{
	if (strlen($oConfig->GetDBSubname()) > 0)
	{
		SetupWebPage::log_info("Creating the structure in '".$oConfig->GetDBName()."' (table names prefixed by '".$oConfig->GetDBSubname()."').");
	}
	else
	{
		SetupWebPage::log_info("Creating the structure in '".$oConfig->GetDBSubname()."'.");
	}

	//MetaModel::CheckDefinitions();
	if ($sMode == 'install')
	{
		if (!MetaModel::DBExists(/* bMustBeComplete */ false))
		{
			MetaModel::DBCreate();
			SetupWebPage::log_ok("Database structure successfully created.");
		}
		else
		{
			if (strlen($oConfig->GetDBSubname()) > 0)
			{
				throw new Exception("Error: found iTop tables into the database '".$oConfig->GetDBName()."' (prefix: '".$oConfig->GetDBSubname()."'). Please, try selecting another database instance or specify another prefix to prevent conflicting table names.");
			}
			else
			{
				throw new Exception("Error: found iTop tables into the database '".$oConfig->GetDBName()."'. Please, try selecting another database instance or specify a prefix to prevent conflicting table names.");
			}
		}
	}
	else
	{
		if (MetaModel::DBExists(/* bMustBeComplete */ false))
		{
			MetaModel::DBCreate();
			SetupWebPage::log_ok("Database structure successfully created.");
		}
		else
		{
			if (strlen($oConfig->GetDBSubname()) > 0)
			{
				throw new Exception("Error: No previous instance of iTop found into the database '".$oConfig->GetDBName()."' (prefix: '".$oConfig->GetDBSubname()."'). Please, try selecting another database instance.");
			}
			else
			{
				throw new Exception("Error: No previous instance of iTop found into the database '".$oConfig->GetDBName()."'. Please, try selecting another database instance.");
			}
		}
	}
	return true;
}

function RecordInstallation(Config $oConfig, $aSelectedModules)
{
	// Record main installation
	$oInstallRec = new ModuleInstallation();
	$oInstallRec->Set('name', 'itop');
	$oInstallRec->Set('version', ITOP_VERSION.'.'.ITOP_REVISION);
	$oInstallRec->Set('comment', "Done by the setup program\nBuilt on ".ITOP_BUILD_DATE);
	$oInstallRec->Set('parent_id', 0); // root module
	$iMainItopRecord = $oInstallRec->DBInsertNoReload();

	// Record installed modules
	//
	$aAvailableModules = AnalyzeInstallation($oConfig);
	foreach($aSelectedModules as $sModuleId)
	{
		$aModuleData = $aAvailableModules[$sModuleId];
		$sName = $sModuleId;
		$sVersion = $aModuleData['version_code'];
		$aComments = array();
		$aComments[] = 'Done by the setup program';
		if ($aModuleData['mandatory'])
		{
			$aComments[] = 'Mandatory';
		}
		else
		{
			$aComments[] = 'Optional';
		}
		if ($aModuleData['visible'])
		{
			$aComments[] = 'Visible (during the setup)';
		}
		else
		{
			$aComments[] = 'Hidden (selected automatically)';
		}
		foreach ($aModuleData['dependencies'] as $sDependOn)
		{
			$aComments[] = "Depends on module: $sDependOn";
		}
		$sComment = implode("\n", $aComments);

		$oInstallRec = new ModuleInstallation();
		$oInstallRec->Set('name', $sName);
		$oInstallRec->Set('version', $sVersion);
		$oInstallRec->Set('comment', $sComment);
		$oInstallRec->Set('parent_id', $iMainItopRecord);
		$oInstallRec->DBInsertNoReload();
	}
	// Database is created, installation has been tracked into it
	return true;	
}

function ListModuleFiles($sRelDir)
{
	$sDirectory = APPROOT.'/'.$sRelDir;
	//echo "<p>$sDirectory</p>\n";
	if ($hDir = opendir($sDirectory))
	{
		// This is the correct way to loop over the directory. (according to the documentation)
		while (($sFile = readdir($hDir)) !== false)
		{
			$aMatches = array();
			if (is_dir($sDirectory.'/'.$sFile))
			{
				if (($sFile != '.') && ($sFile != '..') && ($sFile != '.svn'))
				{
					ListModuleFiles($sRelDir.'/'.$sFile);
				}
			}
			else if (preg_match('/^module\.(.*).php$/i', $sFile, $aMatches))
			{
				SetupWebPage::SetModulePath($sRelDir);
				try
				{
					//echo "<p>Loading: $sDirectory/$sFile...</p>\n";
					require_once($sDirectory.'/'.$sFile);
					//echo "<p>Done.</p>\n";
				}
				catch(Exception $e)
				{
					// Continue...
				}
			}
		}
		closedir($hDir);
	}
	else
	{
		throw new Exception("Data directory (".$sDirectory.") not found or not readable.");
	}
}
?>