public static void DecryptDecompressDirectoryStructure(string fileToDecompress, BackupRestoreLocation location, string encryptionKey, ISimpleCredential credential, string tempLocation, string singleFile)
{
FileStream fileStreamToRead = (FileStream)null;
IFolderAccess folderAccess = (IFolderAccess)null;
string str = string.Empty;
try
{
if (location == BackupRestoreLocation.External)
{
fileStreamToRead = new FileStream(fileToDecompress, FileMode.Open);
}
else
{
string path = fileToDecompress;
if (!File.Exists(path))
{
FileInfo internalBackupFile = BackupFileServiceHelper.LatestInternalBackupFile;
if (internalBackupFile == null)
{
FileNotFoundException notFoundException = new FileNotFoundException("No internal or USB backup file available to restore.");
throw notFoundException;
}
path = internalBackupFile.DirectoryName + "\\" + internalBackupFile.Name;
}
fileStreamToRead = File.Open(path, FileMode.Open, FileAccess.Read);
}
if (fileStreamToRead != null && fileStreamToRead.Length == 0L)
{
FileNotFoundException notFoundException = new FileNotFoundException("The file is missing or has a length of zero bytes. It cannot be decrypted or unzipped.");
throw notFoundException;
}
if (!string.IsNullOrEmpty(encryptionKey))
{
str = fileToDecompress;
BackupRestoreCompression.DecryptFile(fileStreamToRead, encryptionKey, str);
fileStreamToRead = File.Open(str, FileMode.Open, FileAccess.Read);
}
if (fileStreamToRead == null)
{
return;
}
if (!string.IsNullOrEmpty(singleFile))
{
BackupRestoreCompression.UnzipSingleFile(fileStreamToRead, tempLocation, singleFile);
}
else
{
BackupRestoreCompression.UnzipFile(fileStreamToRead, tempLocation);
}
}
finally
{
if (fileStreamToRead != null)
{
fileStreamToRead.Close();
fileStreamToRead.Dispose();
}
if (folderAccess != null)
{
folderAccess.Disconnect();
folderAccess.Dispose();
}
if (!string.IsNullOrEmpty(str) && File.Exists(str))
{
File.Delete(str);
}
}
}
static void decrypt(string file, string key, string decryptedPath)
{
FileStream f = new FileStream(file, FileMode.Open);
BackupRestoreCompression.DecryptFile(f, key, decryptedPath);
}