public SaveConfigToken GetLastSaveConfigToken()
{
Type ourType = this.GetType();
string savedTokenName = "SaveConfigToken." + ourType.Namespace + "." + ourType.Name + ".BinaryFormatter";
string savedToken = Settings.CurrentUser.GetString(savedTokenName, null);
SaveConfigToken saveConfigToken = null;
if (savedToken != null)
{
try
{
byte[] bytes = Convert.FromBase64String(savedToken);
MemoryStream ms = new MemoryStream(bytes);
BinaryFormatter formatter = new BinaryFormatter();
DeferredFormatter deferred = new DeferredFormatter();
StreamingContext streamingContext = new StreamingContext(formatter.Context.State, deferred);
formatter.Context = streamingContext;
SerializationFallbackBinder sfb = new SerializationFallbackBinder();
sfb.AddAssembly(this.GetType().Assembly);
sfb.AddAssembly(typeof(FileType).Assembly);
formatter.Binder = sfb;
object obj = formatter.Deserialize(ms);
deferred.FinishDeserialization(ms);
ms.Close();
ms = null;
//SaveConfigToken sct = new SaveConfigToken();
//saveConfigToken = (SaveConfigToken)obj;
saveConfigToken = GetSaveConfigTokenFromSerializablePortion(obj);
}
catch (Exception)
{
// Ignore erros and revert to default
saveConfigToken = null;
}
}
if (saveConfigToken == null)
{
saveConfigToken = CreateDefaultSaveConfigToken();
}
return(saveConfigToken);
}
public SaveConfigToken GetLastSaveConfigToken()
{
Type ourType = this.GetType();
string savedTokenName = ourType.Namespace + "." + ourType.Name;
string savedToken = Settings.CurrentUser.GetString(savedTokenName, null);
SaveConfigToken saveConfigToken = null;
if (savedToken != null)
{
try
{
SoapFormatter soap = new SoapFormatter();
byte[] bytes = Encoding.UTF8.GetBytes(savedToken);
MemoryStream ms = new MemoryStream(bytes);
SerializationFallbackBinder sfb = new SerializationFallbackBinder();
sfb.AddAssembly(this.GetType().Assembly);
sfb.AddAssembly(typeof(FileType).Assembly);
soap.Binder = sfb;
object obj = soap.Deserialize(ms);
ms.Close();
SaveConfigToken sct = new SaveConfigToken();
saveConfigToken = (SaveConfigToken)obj;
}
catch
{
// Ignore erros and revert to default
saveConfigToken = null;
}
}
if (saveConfigToken == null)
{
saveConfigToken = CreateDefaultSaveConfigToken();
}
return(saveConfigToken);
}
/// <summary>
/// Deserializes a Document from a stream.
/// </summary>
/// <param name="stream">The stream to deserialize from. This stream must be seekable.</param>
/// <returns>The Document that was stored in stream.</returns>
/// <remarks>
/// This is the only supported way to deserialize a Document instance from disk.
/// </remarks>
public static Document FromStream(Stream stream)
{
long oldPosition = stream.Position;
bool pdn21Format = true;
// Version 2.1+ file format:
// Starts with bytes as defined by MagicBytes
// Next three bytes are 24-bit unsigned int 'N' (first byte is low-word, second byte is middle-word, third byte is high word)
// The next N bytes are a string, this is the document header (it is XML, UTF-8 encoded)
// Important: 'N' indicates a byte count, not a character count. 'N' bytes may result in less than 'N' characters,
// depending on how the characters decode as per UTF8
// If the next 2 bytes are 0x00, 0x01: This signifies that non-compressed .NET serialized data follows.
// If the next 2 bytes are 0x1f, 0x8b: This signifies the start of the gzip compressed .NET serialized data
//
// Version 2.0 and previous file format:
// Starts with 0x1f, 0x8b: this signifies the start of the gzip compressed .NET serialized data.
// Read in the 'magic' bytes
for (int i = 0; i < MagicBytes.Length; ++i)
{
int theByte = stream.ReadByte();
if (theByte == -1)
{
throw new EndOfStreamException();
}
if (theByte != MagicBytes[i])
{
pdn21Format = false;
break;
}
}
// Read in the header if we found the 'magic' bytes identifying a PDN 2.1 file
XmlDocument headerXml = null;
if (pdn21Format)
{
// This is a Paint.NET v2.1+ file.
int low = stream.ReadByte();
if (low == -1)
{
throw new EndOfStreamException();
}
int mid = stream.ReadByte();
if (mid == -1)
{
throw new EndOfStreamException();
}
int high = stream.ReadByte();
if (high == -1)
{
throw new EndOfStreamException();
}
int byteCount = low + (mid << 8) + (high << 16);
byte[] bytes = new byte[byteCount];
int bytesRead = Utility.ReadFromStream(stream, bytes, 0, byteCount);
if (bytesRead != byteCount)
{
throw new EndOfStreamException("expected " + byteCount + " bytes, but only got " + bytesRead);
}
string xml = Encoding.UTF8.GetString(bytes);
headerXml = new XmlDocument();
headerXml.LoadXml(xml);
}
else
{
stream.Position = oldPosition; // rewind and try as v2.0-or-earlier file
}
// Start reading the data section of the file. Determine if it's gzip or regular
long oldPosition2 = stream.Position;
int first = stream.ReadByte();
if (first == -1)
{
throw new EndOfStreamException();
}
int second = stream.ReadByte();
if (second == -1)
{
throw new EndOfStreamException();
}
Document document;
object docObject;
BinaryFormatter formatter = new BinaryFormatter();
SerializationFallbackBinder sfb = new SerializationFallbackBinder();
sfb.AddAssembly(Assembly.GetExecutingAssembly()); // first try PaintDotNet.Data.dll
sfb.AddAssembly(typeof(Utility).Assembly); // second, try PaintDotNet.Core.dll
sfb.AddAssembly(typeof(SystemLayer.Memory).Assembly); // third, try PaintDotNet.SystemLayer.dll
formatter.Binder = sfb;
if (first == 0 && second == 1)
{
DeferredFormatter deferred = new DeferredFormatter();
formatter.Context = new StreamingContext(formatter.Context.State, deferred);
docObject = formatter.UnsafeDeserialize(stream, null);
deferred.FinishDeserialization(stream);
}
else if (first == 0x1f && second == 0x8b)
{
stream.Position = oldPosition2; // rewind to the start of 0x1f, 0x8b
GZipStream gZipStream = new GZipStream(stream, CompressionMode.Decompress, true);
docObject = formatter.UnsafeDeserialize(gZipStream, null);
}
else
{
throw new FormatException("file is not a valid Paint.NET document");
}
document = (Document)docObject;
document.Dirty = true;
document.headerXml = headerXml;
document.Invalidate();
return(document);
}
