N°2249 - Supportability - Updater module (application upgrade)

datamodels/2.x/itop-files-information/src/Service/FilesInformation.php

@@ -0,0 +1,133 @@
+<?php
+/**
+ * @copyright   Copyright (C) 2010-2019 Combodo SARL
+ * @license     http://opensource.org/licenses/AGPL-3.0
+ */
+
+
+namespace Combodo\iTop\FilesInformation\Service;
+
+
+use Dict;
+use MetaModel;
+use utils;
+
+class FilesInformation
+{
+    private static $sItopOwner;
+
+	/**
+	 * Check iTop files access rights to tell if core update is possible
+	 *
+	 * @param string $sMessage
+	 *
+	 * @return bool true if core update is possible
+	 * @throws \Combodo\iTop\FilesInformation\Service\FileNotExistException
+	 */
+    public static function CanUpdateCore(&$sMessage)
+    {
+        self::Init();
+        // Check than iTop can write everywhere
+        if (!self::CanWriteRecursive('', $sMessage))
+        {
+            return false;
+        }
+
+        return true;
+    }
+
+	/**
+	 * @param string $sRootPath
+	 * @param string $sMessage
+	 *
+	 * @return bool
+	 * @throws \Combodo\iTop\FilesInformation\Service\FileNotExistException
+	 */
+    private static function CanWriteRecursive($sRootPath = '', &$sMessage = null)
+    {
+        $aDirStats = FilesInformationUtils::Scan($sRootPath, false);
+        foreach ($aDirStats as $sFileName => $aFileStats)
+        {
+            if (!self::CanWriteToFile($aFileStats))
+            {
+	            $sMessage = Dict::Format('FilesInformation:Error:CantWriteToFile', $sRootPath.DIRECTORY_SEPARATOR.$sFileName);
+                return false;
+            }
+            if (($sFileName != '.') && ($aFileStats['type'] == 'dir'))
+            {
+                if (!self::CanWriteRecursive($sRootPath.DIRECTORY_SEPARATOR.$sFileName, $sMessage))
+                {
+                    return false;
+                }
+            }
+        }
+        return true;
+    }
+
+	/**
+	 * Check if iTop can write
+	 * @param string $sFilename absolute path to chack
+	 *
+	 * @return bool
+	 * @throws \Combodo\iTop\FilesInformation\Service\FileNotExistException
+	 */
+	public static function IsWritable($sFilename)
+    {
+	    $aFileStats = FilesInformationUtils::GetFileStat(utils::LocalPath($sFilename));
+	    return self::CanWriteToFile($aFileStats);
+    }
+
+    private static function CanWriteToFile($aFileStats)
+    {
+        if ($aFileStats['writable'])
+        {
+            return true;
+        }
+        if ($aFileStats['file_owner'] == self::$sItopOwner)
+        {
+            // If iTop owns the file, no pb to write
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * @throws \Combodo\iTop\FilesInformation\Service\FileNotExistException
+     */
+    private static function Init()
+    {
+        clearstatcache();
+
+        $sSourceConfigFile = MetaModel::GetConfig()->GetLoadedFile();
+        $sSourceConfigFile = utils::LocalPath($sSourceConfigFile);
+
+        $aConfigFiles = FilesInformationUtils::Scan(dirname($sSourceConfigFile));
+        if (!isset($aConfigFiles[basename($sSourceConfigFile)]))
+        {
+            return;
+        }
+        $aConfigStats = $aConfigFiles[basename($sSourceConfigFile)];
+        self::$sItopOwner = $aConfigStats['file_owner'];
+    }
+
+    public static function GetItopDiskSpace()
+    {
+        return FilesInformationUtils::GetDirSize(realpath(APPROOT));
+    }
+
+	/**
+	 * @param $sLocalDirPath
+	 *
+	 * @return array
+	 * @throws \Combodo\iTop\FilesInformation\Service\FileNotExistException
+	 */
+	public static function GetDirInfo($sLocalDirPath)
+    {
+    	if (utils::AbsolutePath($sLocalDirPath) === false)
+	    {
+	    	return array();
+	    }
+    	return FilesInformationUtils::Scan($sLocalDirPath);
+    }
+
+}