public bool ValidateUpdate(MFUpdate_Emu update, IntPtr pValidation, int validationLen)
{
// todo: add signature check
return(true);
}
public bool ValidatePacket(MFUpdate_Emu update, IntPtr packet, int packetLen, IntPtr validationData, int validationLen)
{
bool valid = false;
switch ((MFUpdateType)update.Header.UpdateType)
{
case MFUpdateType.AssemblyUpdate:
HashAlgorithm alg = null;
switch (validationLen)
{
case 512 / 8:
alg = new SHA512Cng();
break;
case 256 / 8:
alg = new SHA256Cng();
break;
case 384 / 8:
alg = new SHA384Cng();
break;
case 160 / 8:
alg = new SHA1Cng();
break;
}
if (alg != null)
{
byte[] data = new byte[packetLen];
Marshal.Copy(packet, data, 0, packetLen);
byte[] hash = alg.ComputeHash(data);
if (hash.Length == validationLen)
{
valid = true;
byte[] vHash = new byte[validationLen];
Marshal.Copy(validationData, vHash, 0, validationLen);
for (int i = 0; i < validationLen; i++)
{
if (vHash[i] != hash[i])
{
valid = false;
break;
}
}
}
}
break;
case MFUpdateType.FirmwareUpdate:
valid = true;
break;
case MFUpdateType.KeyUpdate:
// TODO:
break;
}
return(valid);
}
public bool Authenticate(MFUpdate_Emu update, IntPtr pAuth, int authLen)
{
return(true);
}
public bool AuthCommand(MFUpdate_Emu update, uint cmd, IntPtr pArgs, int argsLen, IntPtr pResponse, ref int responseLen)
{
return(true);
}
public bool InstallUpdate(MFUpdate_Emu update, IntPtr pValidation, int validationLen)
{
bool fValid = false;
MFUpdate_Header header = new MFUpdate_Header();
GCHandle h = GCHandle.Alloc(header, GCHandleType.Pinned);
IntPtr ptr = h.AddrOfPinnedObject();
Hal.UpdateStorage.Read(update.StorageHandle, 0, ptr, Marshal.SizeOf(header));
header = (MFUpdate_Header)Marshal.PtrToStructure(ptr, typeof(MFUpdate_Header));
h.Free();
switch ((MFUpdateType)header.UpdateType)
{
case MFUpdateType.AssemblyUpdate:
// signature check or strong name check
fValid = true;
if (fValid)
{
byte[] asmBytes = new byte[header.UpdateSize];
GCHandle hb = GCHandle.Alloc(asmBytes, GCHandleType.Pinned);
IntPtr gcBytes = h.AddrOfPinnedObject();
if (0 < Hal.UpdateStorage.Read(update.StorageHandle, Marshal.SizeOf(header), gcBytes, (int)header.UpdateSize))
{
Marshal.Copy(gcBytes, asmBytes, 0, asmBytes.Length);
string fTmp = Path.ChangeExtension(Path.GetTempFileName(), ".pe");
try
{
using (FileStream fs = File.OpenWrite(fTmp))
{
fs.Write(asmBytes, 0, asmBytes.Length);
}
Emulator.LoadAssembly(fTmp);
Emulator.Run();
File.Delete(fTmp);
}
catch
{
return(false);
}
finally
{
if (File.Exists(fTmp))
{
File.Delete(fTmp);
}
}
}
hb.Free();
}
break;
case MFUpdateType.KeyUpdate:
// unwrap and store
break;
}
return(fValid);
}
public bool SetProperty(MFUpdate_Emu update, string propertyName, IntPtr propValue, int propSize)
{
return(false);
}