private void Serialise()
{
if (_text == null && _data != null)
{
var serialFormat = (SerialFormat)SysProps.GetValue(SysPropName.SAlg, 0);
switch (serialFormat)
{
case SerialFormat.Binary:
// try Binary serialiser
_text = BinarySerializerHelper.SerializeToString(_data);
SysProps.Set(SysPropName.SAlg, (int)SerialFormat.Binary);
break;
case SerialFormat.Soap:
// try Soap serialiser
_text = SoapSerializerHelper.SerializeToString(_data);
SysProps.Set(SysPropName.SAlg, (int)SerialFormat.Soap);
break;
case SerialFormat.Json:
// try Json serialiser
_text = JsonSerializerHelper.SerializeToString(_data);
SysProps.Set(SysPropName.SAlg, (int)SerialFormat.Json);
break;
case SerialFormat.Xml:
try
{
_text = XmlSerializerHelper.SerializeToString(_dataTypeType, _data);
SysProps.Set(SysPropName.SAlg, (int)SerialFormat.Xml);
}
catch (Exception excp)
{
throw new ApplicationException(
"The XmlSerializer has thrown an exception: '" + excp.GetType().Name + "'. " +
"If your intent was to use the BinaryFormatter or SoapFormatter for serialisation, " +
"then you should set the SerialFormat property appropriately.",
excp);
}
break;
default:
// use default xml serialiser
try
{
_text = XmlSerializerHelper.SerializeToString(_dataTypeType, _data);
SysProps.Set(SysPropName.SAlg, (int)SerialFormat.Xml);
}
catch (Exception excp)
{
throw new ApplicationException(
"The XmlSerializer has thrown an exception: '" + excp.GetType().Name + "'. " +
"If your intent was to use the BinaryFormatter or SoapFormatter for serialisation, " +
"then you should set the SerialFormat property appropriately.",
excp);
}
break;
}
}
}
private void Decrypt()
{
if (_zData == null)
{
// do asymmetric decryption 1st, if required
if (_xData == null)
{
var yAlg = SysProps.GetValue(SysPropName.YAlg, 0);
var yrki = SysProps.GetValue <string>(SysPropName.YRKI, null);
if ((yAlg > 0) && (yrki != null))
{
_xData = _cryptoManager.DecryptWithSecretKey(yrki, YData);
}
else
{
_xData = YData;
}
//_YData = null;
}
// now do symmetric decryption 2nd, if required
var xAlg = SysProps.GetValue(SysPropName.XAlg, 0);
var xtki = SysProps.GetValue <string>(SysPropName.XTKI, null);
if ((xAlg > 0) && (xtki != null))
{
_zData = _cryptoManager.DecryptWithTranspKey(xtki, _xData);
}
else
{
_zData = _xData;
}
_xData = null;
}
}
private void Deserialise(Type userDataType)
{
if (_data == null)
{
// decompress 1st if required
Decompress();
// now deserialise
Type dataTypeType = userDataType ?? _dataTypeType;
if ((dataTypeType == null) && !String.IsNullOrEmpty(DataTypeName))
{
dataTypeType = Type.GetType(DataTypeName);
}
var serialFormat = (SerialFormat)SysProps.GetValue(SysPropName.SAlg, (int)SerialFormat.Undefined);
if (String.IsNullOrEmpty(_text))
{
// null data object
_data = null;
}
else if (serialFormat == SerialFormat.Binary)
{
// use Binary deserialiser
_data = BinarySerializerHelper.DeserializeFromString(_text);
}
else if (serialFormat == SerialFormat.Soap)
{
// use Soap deserialiser
_data = SoapSerializerHelper.DeserializeFromString(_text);
}
else if (serialFormat == SerialFormat.Json)
{
// use Json deserialiser
_data = JsonSerializerHelper.DeserializeFromString(dataTypeType, _text);
}
else if (dataTypeType != null)
{
// try default xml serialiser
_data = XmlSerializerHelper.DeserializeFromString(dataTypeType, _text);
}
else
{
throw new ApplicationException("Cannot deserialise!");
}
}
}
// mutable props
private void Authenticate()
{
if (_ySignedState == 0)
{
var yAlg = SysProps.GetValue(SysPropName.YAlg, 0);
var yski = SysProps.GetValue <string>(SysPropName.YSKI, null);
if ((yAlg > 0) && (yski != null))
{
if (_cryptoManager.VerifySignature(yski, YData, YSign))
{
_ySignedState = 1; // success
}
}
else
{
// cannot authenticate
_ySignedState = -1;
}
}
}
/// <summary>
///
/// </summary>
public void Freeze()
{
if (_frozen)
{
return;
}
if (Name == null)
{
throw new ApplicationException("Item name not set!");
}
TimeSpan maxLifetime = DateTimeOffset.MaxValue - DateTimeOffset.Now - TimeSpan.FromDays(1);
if (_lifetime > maxLifetime)
{
_lifetime = maxLifetime;
}
if (_lifetime < TimeSpan.Zero)
{
_lifetime = TimeSpan.Zero;
}
Created = DateTimeOffset.Now;
Expires = Created.Add(_lifetime);
// serialise the data if required
Serialise();
if (DataTypeName == null)
{
DataTypeName = "";
}
if (_text == null)
{
//_Text = "";
SysProps.Set(SysPropName.SAlg, (int)SerialFormat.Undefined);
}
SysProps.Set(SysPropName.TLen, _text?.Length ?? 0);
// compress the data
_zData = CompressionHelper.CompressToBuffer(_text);
SysProps.Set(SysPropName.ZAlg, 1);
SysProps.Set(SysPropName.ZLen, _zData?.Length ?? 0);
// do symmetric encryption 1st, if required
var xtki = SysProps.GetValue <String>(SysPropName.XTKI, null);
if (xtki != null)
{
_xData = _cryptoManager.EncryptWithTranspKey(xtki, _zData);
SysProps.Set(SysPropName.XAlg, 1);
}
else
{
_xData = _zData;
}
SysProps.Set(SysPropName.XLen, _xData?.Length ?? 0);
// do asymmetric encryption 2nd, if required
var yrki = SysProps.GetValue <String>(SysPropName.YRKI, null);
if (yrki != null)
{
SysProps.Set(SysPropName.YAlg, 1);
YData = _cryptoManager.EncryptWithPublicKey(yrki, _xData);
}
else
{
YData = _xData;
}
YDataHash = CalculateBufferHash(YData);
SysProps.Set(SysPropName.YLen, YData?.Length ?? 0);
// do public signature 3rd, if required
var yski = SysProps.GetValue <String>(SysPropName.YSKI, null);
if (yski != null)
{
SysProps.Set(SysPropName.YAlg, 1);
YSign = _cryptoManager.CreateSignature(yski, YData);
}
// add other publisher properties
SysProps.Set(SysPropName.ApplName, _moduleInfo.ApplName);
SysProps.Set(SysPropName.ApplFVer, _moduleInfo.ApplFVer);
SysProps.Set(SysPropName.ApplPTok, _moduleInfo.ApplPTok);
SysProps.Set(SysPropName.CoreFVer, _moduleInfo.CoreFVer);
SysProps.Set(SysPropName.CorePTok, _moduleInfo.CorePTok);
SysProps.Set(SysPropName.HostName, _moduleInfo.HostName);
SysProps.Set(SysPropName.UserName, _moduleInfo.UserName);
SysProps.Set(SysPropName.UserWDom, _moduleInfo.UserWDom);
SysProps.Set(SysPropName.UserIdentity, _moduleInfo.Name);
SysProps.Set(SysPropName.UserFullName, _moduleInfo.UserFullName);
SysProps.Set(SysPropName.OrgEnvId, EnvHelper.EnvName(_moduleInfo.ConfigEnv));
SysProps.Set(SysPropName.NodeGuid, _moduleInfo.NodeGuid);
// done
_frozen = true;
}