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iTop/setup/runtimeenv.class.inc.php

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<?php
// Copyright (C) 2010-2012 Combodo SARL
//
// This file is part of iTop.
//
// iTop is free software; you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// iTop 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with iTop. If not, see <http://www.gnu.org/licenses/>
/**
* Manage a runtime environment
*
* @copyright Copyright (C) 2010-2012 Combodo SARL
* @license http://opensource.org/licenses/AGPL-3.0
*/
require_once(APPROOT."setup/modulediscovery.class.inc.php");
require_once(APPROOT.'setup/modelfactory.class.inc.php');
require_once(APPROOT.'setup/compiler.class.inc.php');
require_once(APPROOT.'core/metamodel.class.php');
define ('MODULE_ACTION_OPTIONAL', 1);
define ('MODULE_ACTION_MANDATORY', 2);
define ('MODULE_ACTION_IMPOSSIBLE', 3);
define ('ROOT_MODULE', '_Root_'); // Convention to store IN MEMORY the name/version of the root module i.e. application
define ('DATAMODEL_MODULE', 'datamodel'); // Convention to store the version of the datamodel
class RunTimeEnvironment
{
protected $sTargetEnv;
public function __construct($sEnvironment = 'production')
{
$this->sTargetEnv = $sEnvironment;
}
/**
* Helper function to initialize the ORM and load the data model
* from the given file
* @param $oConfig object The configuration (volatile, not necessarily already on disk)
* @param $bModelOnly boolean Whether or not to allow loading a data model with no corresponding DB
* @return none
*/
public function InitDataModel($oConfig, $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');
$sConfigFile = $oConfig->GetLoadedFile();
if (strlen($sConfigFile) > 0)
{
$this->log_info("MetaModel::Startup from $sConfigFile (ModelOnly = $bModelOnly)");
}
else
{
$this->log_info("MetaModel::Startup (ModelOnly = $bModelOnly)");
}
if (!$bUseCache)
{
// Reset the cache for the first use !
MetaModel::ResetCache(md5(APPROOT).'-'.$this->sTargetEnv);
}
MetaModel::Startup($oConfig, $bModelOnly, $bUseCache);
}
/**
* Analyzes the current installation and the possibilities
*
* @param Config $oConfig Defines the target environment (DB)
* @param mixed $modulesPath Either a single string or an array of absolute paths
* @param bool $bAbortOnMissingDependency ...
* @param hash $aModulesToLoad List of modules to search for, defaults to all if ommitted
* @return hash Array with the following format:
* array =>
* 'iTop' => array(
* 'version_db' => ... (could be empty in case of a fresh install)
* 'version_code => ...
* )
* <module_name> => array(
* 'version_db' => ...
* 'version_code' => ...
* 'install' => array(
* 'flag' => SETUP_NEVER | SETUP_OPTIONAL | SETUP_MANDATORY
* 'message' => ...
* )
* 'uninstall' => array(
* 'flag' => SETUP_NEVER | SETUP_OPTIONAL | SETUP_MANDATORY
* 'message' => ...
* )
* 'label' => ...
* 'dependencies' => array(<module1>, <module2>, ...)
* 'visible' => true | false
* )
* )
*/
public function AnalyzeInstallation($oConfig, $modulesPath, $bAbortOnMissingDependency = false, $aModulesToLoad = null)
{
$aRes = array(
ROOT_MODULE => array(
'version_db' => '',
'name_db' => '',
'version_code' => ITOP_VERSION.'.'.ITOP_REVISION,
'name_code' => ITOP_APPLICATION,
)
);
$aDirs = is_array($modulesPath) ? $modulesPath : array($modulesPath);
$aModules = ModuleDiscovery::GetAvailableModules($aDirs, $bAbortOnMissingDependency, $aModulesToLoad);
foreach($aModules as $sModuleId => $aModuleInfo)
{
list($sModuleName, $sModuleVersion) = ModuleDiscovery::GetModuleName($sModuleId);
if ($sModuleName == '')
{
throw new Exception("Missing name for the module: '$sModuleId'");
}
if ($sModuleVersion == '')
{
// The version must not be empty (it will be used as a criteria to determine wether a module has been installed or not)
//throw new Exception("Missing version for the module: '$sModuleId'");
$sModuleVersion = '1.0.0';
}
$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] = $aModuleInfo;
}
try
{
require_once(APPROOT.'/core/cmdbsource.class.inc.php');
CMDBSource::Init($oConfig->GetDBHost(), $oConfig->GetDBUser(), $oConfig->GetDBPwd(), $oConfig->GetDBName());
$aSelectInstall = CMDBSource::QueryToArray("SELECT * FROM ".$oConfig->GetDBSubname()."priv_module_install");
}
catch (MySQLException $e)
{
// No database or erroneous 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
$iInstalled = strtotime($aInstall['installed']);
$sModuleName = $aInstall['name'];
$sModuleVersion = $aInstall['version'];
if ($sModuleVersion == '')
{
// Though the version cannot be empty in iTop 2.0, it used to be possible
// therefore we have to put something here or the module will not be considered
// as being installed
$sModuleVersion = '0.0.0';
}
if ($aInstall['parent_id'] == 0)
{
$sModuleName = ROOT_MODULE;
}
if (array_key_exists($sModuleName, $aInstallByModule))
{
if ($iInstalled < $aInstallByModule[$sModuleName]['installed'])
{
continue;
}
}
if ($aInstall['parent_id'] == 0)
{
$aRes[$sModuleName]['version_db'] = $sModuleVersion;
$aRes[$sModuleName]['name_db'] = $aInstall['name'];
}
$aInstallByModule[$sModuleName]['installed'] = $iInstalled;
$aInstallByModule[$sModuleName]['version'] = $sModuleVersion;
}
// Adjust the list of proposed modules
//
foreach ($aInstallByModule as $sModuleName => $aModuleDB)
{
if ($sModuleName == ROOT_MODULE) continue; // Skip the main module
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 $aRes;
}
public function WriteConfigFileSafe($oConfig)
{
self::MakeDirSafe(APPCONF);
self::MakeDirSafe(APPCONF.$this->sTargetEnv);
$sTargetConfigFile = APPCONF.$this->sTargetEnv.'/'.ITOP_CONFIG_FILE;
// Write the config file
@chmod($sTargetConfigFile, 0770); // In case it exists: RWX for owner and group, nothing for others
$oConfig->WriteToFile($sTargetConfigFile);
@chmod($sTargetConfigFile, 0440); // Read-only for owner and group, nothing for others
}
/**
* Get the installed modules (only the installed ones)
*/
protected function GetMFModulesToCompile($sSourceEnv, $sSourceDir)
{
$sSourceDirFull = APPROOT.$sSourceDir;
if (!is_dir($sSourceDirFull))
{
throw new Exception("The source directory '$sSourceDirFull' does not exist (or could not be read)");
}
$aDirsToCompile = array($sSourceDirFull);
if (is_dir(APPROOT.'extensions'))
{
$aDirsToCompile[] = APPROOT.'extensions';
}
$aRet = array();
// Determine the installed modules
//
$oSourceConfig = new Config(APPCONF.$sSourceEnv.'/'.ITOP_CONFIG_FILE);
$oSourceEnv = new RunTimeEnvironment($sSourceEnv);
$aAvailableModules = $oSourceEnv->AnalyzeInstallation($oSourceConfig, $aDirsToCompile);
// Do load the required modules
//
$oFactory = new ModelFactory($aDirsToCompile);
$aModules = $oFactory->FindModules();
foreach($aModules as $foo => $oModule)
{
$sModule = $oModule->GetName();
if (array_key_exists($sModule, $aAvailableModules))
{
if ($aAvailableModules[$sModule]['version_db'] != '')
{
$aRet[] = $oModule;
}
}
}
$sDeltaFile = APPROOT.'data/'.$this->sTargetEnv.'.delta.xml';
if (file_exists($sDeltaFile))
{
$oDelta = new MFDeltaModule($sDeltaFile);
$aRet[] = $oDelta;
}
return $aRet;
}
public function CompileFrom($sSourceEnv, $bUseSymLinks = false)
{
$oSourceConfig = new Config(utils::GetConfigFilePath($sSourceEnv));
$sSourceDir = $oSourceConfig->Get('source_dir');
$sSourceDirFull = APPROOT.$sSourceDir;
// Do load the required modules
//
$oFactory = new ModelFactory($sSourceDirFull);
foreach($this->GetMFModulesToCompile($sSourceEnv, $sSourceDir) as $oModule)
{
$sModule = $oModule->GetName();
$oFactory->LoadModule($oModule);
if ($oFactory->HasLoadErrors())
{
break;
}
}
if ($oFactory->HasLoadErrors())
{
foreach($oFactory->GetLoadErrors() as $sModuleId => $aErrors)
{
echo "<h3>Module: ".$sModuleId."</h3>\n";
foreach($aErrors as $oXmlError)
{
echo "<p>File: ".$oXmlError->file." Line:".$oXmlError->line." Message:".$oXmlError->message."</p>\n";
}
}
}
else
{
$oFactory->ApplyChanges();
//$oFactory->Dump();
$sTargetDir = APPROOT.'env-'.$this->sTargetEnv;
self::MakeDirSafe($sTargetDir);
$oMFCompiler = new MFCompiler($oFactory);
$oMFCompiler->Compile($sTargetDir, null, $bUseSymLinks);
require_once(APPROOT.'/core/dict.class.inc.php');
MetaModel::ResetCache(md5(APPROOT).'-'.$this->sTargetEnv);
}
}
/**
* Helper function to create the database structure
* @return boolean true on success, false otherwise
*/
public function CreateDatabaseStructure(Config $oConfig, $sMode)
{
if (strlen($oConfig->GetDBSubname()) > 0)
{
$this->log_info("Creating the structure in '".$oConfig->GetDBName()."' (table names prefixed by '".$oConfig->GetDBSubname()."').");
}
else
{
$this->log_info("Creating the structure in '".$oConfig->GetDBSubname()."'.");
}
//MetaModel::CheckDefinitions();
if ($sMode == 'install')
{
if (!MetaModel::DBExists(/* bMustBeComplete */ false))
{
MetaModel::DBCreate();
$this->log_ok("Database structure successfully created.");
}
else
{
if (strlen($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();
$this->log_ok("Database structure successfully updated.");
// Check (and update only if it seems needed) the hierarchical keys
ob_start();
MetaModel::CheckHKeys(false /* bDiagnosticsOnly */, true /* bVerbose*/, true /* bForceUpdate */); // Since in 1.2-beta the detection was buggy, let's force the rebuilding of HKeys
$sFeedback = ob_get_clean();
$this->log_ok("Hierchical keys rebuilt: $sFeedback");
// Check (and fix) data sync configuration
ob_start();
MetaModel::CheckDataSources(false /*$bDiagnostics*/, true/*$bVerbose*/);
$sFeedback = ob_get_clean();
$this->log_ok("Data sources checked: $sFeedback");
}
else
{
if (strlen($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;
}
public function RecordInstallation(Config $oConfig, $sDataModelVersion, $aSelectedModules, $sModulesRelativePath)
{
// Record datamodel version
$aData = array(
'source_dir' => $oConfig->Get('source_dir'),
);
$oInstallRec = new ModuleInstallation();
$oInstallRec->Set('name', DATAMODEL_MODULE);
$oInstallRec->Set('version', $sDataModelVersion);
$oInstallRec->Set('comment', json_encode($aData));
$oInstallRec->Set('parent_id', 0); // root module
$iMainItopRecord = $oInstallRec->DBInsertNoReload();
// Record main installation
$oInstallRec = new ModuleInstallation();
$oInstallRec->Set('name', ITOP_APPLICATION);
$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 = $this->AnalyzeInstallation($oConfig, APPROOT.$sModulesRelativePath);
foreach($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;
}
public function GetApplicationVersion(Config $oConfig)
{
$aResult = false;
try
{
require_once(APPROOT.'/core/cmdbsource.class.inc.php');
CMDBSource::Init($oConfig->GetDBHost(), $oConfig->GetDBUser(), $oConfig->GetDBPwd(), $oConfig->GetDBName());
$sSQLQuery = "SELECT * FROM ".$oConfig->GetDBSubname()."priv_module_install";
$aSelectInstall = CMDBSource::QueryToArray($sSQLQuery);
}
catch (MySQLException $e)
{
// No database or erroneous information
$this->log_error('Can not connect to the database: host: '.$oConfig->GetDBHost().', user:'.$oConfig->GetDBUser().', pwd:'.$oConfig->GetDBPwd().', db name:'.$oConfig->GetDBName());
$this->log_error('Exception '.$e->getMessage());
return false;
}
// Scan the list of installed modules to get the version of the 'ROOT' module which holds the main application version
foreach ($aSelectInstall as $aInstall)
{
$sModuleVersion = $aInstall['version'];
if ($sModuleVersion == '')
{
// Though the version cannot be empty in iTop 2.0, it used to be possible
// therefore we have to put something here or the module will not be considered
// as being installed
$sModuleVersion = '0.0.0';
}
if ($aInstall['parent_id'] == 0)
{
if ($aInstall['name'] == DATAMODEL_MODULE)
{
$aResult['datamodel_version'] = $sModuleVersion;
$aComments = json_decode($aInstall['comment'], true);
if (is_array($aComments))
{
$aResult = array_merge($aResult, $aComments);
}
}
else
{
$aResult['product_name'] = $aInstall['name'];
$aResult['product_version'] = $sModuleVersion;
}
}
}
if (!array_key_exists('datamodel_version', $aResult))
{
// Versions prior to 2.0 did not record the version of the datamodel
// so assume that the datamodel version is equal to the application version
$aResult['datamodel_version'] = $aResult['product_version'];
}
$this->log_info("GetApplicationVersion returns: product_name: ".$aResult['product_name'].', product_version: '.$aResult['product_version']);
return $aResult;
}
public static function MakeDirSafe($sDir)
{
if (!is_dir($sDir))
{
if (!@mkdir($sDir))
{
throw new Exception("Failed to create directory '$sTargetPath', please check the rights of the web server");
}
@chmod($sDir, 0770); // RWX for owner and group, nothing for others
}
}
/**
* Wrappers for logging into the setup log files
*/
protected function log_error($sText)
{
SetupPage::log_error($sText);
}
protected function log_warning($sText)
{
SetupPage::log_warning($sText);
}
protected function log_info($sText)
{
SetupPage::log_info($sText);
}
protected function log_ok($sText)
{
SetupPage::log_ok($sText);
}
} // End of class
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