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

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

@@ -0,0 +1,123 @@
+<?php
+/**
+ * @copyright   Copyright (C) 2010-2019 Combodo SARL
+ * @license     http://opensource.org/licenses/AGPL-3.0
+ */
+
+
+namespace Combodo\iTop\FilesInformation\Service;
+
+
+use Dict;
+use DOMDocument;
+use DOMElement;
+use DOMNode;
+use DOMXPath;
+
+class FilesIntegrity
+{
+
+	/**
+	 * Get the files defined in the manifest.xml
+	 *
+	 * @param string $sManifest full path of the manifest file
+	 *
+	 * @return array|false list of file info (path, size, md5)
+	 * @throws \Exception
+	 */
+	private static function GetInstalledFiles($sManifest)
+	{
+		$aFiles = array();
+
+		$aManifestStats = @stat($sManifest);
+		if ($aManifestStats === false)
+		{
+			// No manifest
+			return false;
+		}
+
+		$oManifestDocument = new DOMDocument('1.0', 'UTF-8');
+		@$oManifestDocument->load($sManifest);
+		$oXPath = new DOMXPath($oManifestDocument);
+		$oNodeList = $oXPath->query('/files');
+		if ($oNodeList->length == 0)
+		{
+			// no files
+			return false;
+		}
+		foreach ($oNodeList as $oItems)
+		{
+			foreach ($oItems->childNodes as $oFileNode)
+			{
+				if (($oFileNode instanceof DOMNode))
+				{
+					if ($oFileNode->hasChildNodes())
+					{
+						$aFileInfo = array();
+						foreach ($oFileNode->childNodes as $oFileInfo)
+						{
+							if ($oFileInfo instanceof DOMElement)
+							{
+								$aFileInfo[$oFileInfo->tagName] = $oFileInfo->textContent;
+							}
+						}
+						$aFiles[] = $aFileInfo;
+					}
+				}
+			}
+		}
+
+		return $aFiles;
+	}
+
+	/**
+	 * Check that files present in iTop folder corresponds to the manifest
+	 *
+	 * @param string $sRootPath
+	 *
+	 * @throws \Combodo\iTop\FilesInformation\Service\FileIntegrityException
+	 */
+	public static function CheckInstallationIntegrity($sRootPath = APPROOT)
+	{
+		$aFilesInfo = FilesIntegrity::GetInstalledFiles($sRootPath.'manifest.xml');
+
+		if ($aFilesInfo === false)
+		{
+			throw new FileIntegrityException(Dict::Format('FilesInformation:Error:MissingFile', 'manifest.xml'));
+		}
+
+		@clearstatcache();
+		foreach ($aFilesInfo as $aFileInfo)
+		{
+			$sFile = $sRootPath.$aFileInfo['path'];
+			if (is_file($sFile))
+			{
+				$aStats = @stat($sFile);
+				$iSize = $aStats['size'];
+				$sContent = file_get_contents($sFile);
+				$sChecksum = md5($sContent);
+				if (($iSize != $aFileInfo['size']) || ($sChecksum != $aFileInfo['md5']))
+				{
+
+					throw new FileIntegrityException(Dict::Format('FilesInformation:Error:CorruptedFile', basename($sFile)));
+				}
+			}
+			// Packed with missing files...
+		}
+	}
+
+	public static function IsInstallationConform($sRootPath, &$sErrorMsg)
+	{
+		$sErrorMsg = '';
+		try
+		{
+			self::CheckInstallationIntegrity($sRootPath);
+			return true;
+		}
+		catch (FileIntegrityException $e)
+		{
+			$sErrorMsg = $e->getMessage();
+		}
+		return false;
+	}
+}