/// <summary>
/// Decompresses a zipped <see cref="byte"/> array.
/// </summary>
/// <param name="data"></param>
/// <returns>item1: List of unsecurebytes, item2: Tuple with Guids and bytes as Stacks</returns>
public static Tuple <Stack <byte[]>, Tuple <Stack <Guid>, Stack <byte[]> > > GetEntriesFromZipArchive(byte[] data, bool protectedMemory = false)
{
using (var zippedStream = new MemoryStream(data))
{
using (var archive = new ZipArchive(zippedStream))
{
// unsecure data
var openData = new Stack <byte[]>();
// sensible data
var guids = new Stack <Guid>();
var sensibleBytes = new Stack <byte[]>();
var sensibleData = Tuple.Create(guids, sensibleBytes);
var entries = Tuple.Create(openData, sensibleData);
foreach (var entry in archive.Entries)
{
bool sensible = false;
if (entry.FullName.StartsWith($"{TermHelper.GetDatabaseTerm()}/ByteModel"))
{
sensible = true;
}
if (entry != null)
{
using (var unzippedEntryStream = entry.Open())
{
using (var ms = new MemoryStream())
{
unzippedEntryStream.CopyTo(ms);
var unzippedArray = ms.ToArray();
if (sensible)
{
entries.Item2.Item1.Push(new Guid(entry.Name));
entries.Item2.Item2.Push(unzippedArray);
}
else
{
entries.Item1.Push(unzippedArray);
}
}
}
}
}
return(entries);
}
}
}
/// <summary>
/// Gets the value of the given setting name. Returns defautl(T) if setting has no value right now => Void.
/// Throws <see cref="FileLoadException"/> if a setting doesnt exist.
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
public static T GetSettingValue <T>(string name)
{
if (!_wellKnownSettings.ContainsKey(name))
{
throw new FileLoadException($"The given setting does not exist: {name}");
}
var setDoc = XDocument.Load(IOPathHelper.GetSettingsFile());
var setDocElements = setDoc.Root.Elements();
foreach (var element in setDocElements)
{
if (element.Name == name)
{
if (element.Value == "Void")
{
return(default(T));
}
if (ValidateSetting(name, element.Value))
{
// Cast the value to the right type that is being given by the settingType
var normalString = element.Value.ToString();
return((T)Convert.ChangeType(normalString, typeof(T)));
}
else
{
Communication.InformUser
("An irregularity was detected in your configuration file. " +
"If you are not aware of ever having changed that file directly, the Guardian suggests starting a scan within the fortress and your Antivirus-Software, " +
$"for it is possible that something malicious crawled through your files. The {TermHelper.GetDatabaseTerm()} however remains save.");
}
}
}
return(default(T));
}