public static ExpressionOpObj Find(ExpressionOp symbol)
{
return(Operators.FirstOrDefault(op => op.Symbol == symbol));
}
protected override void UnpackageData(ReadingContext SR, UInt32 Length)
{
if (Length > 0)
{
UInt32 ExpressionVal = SR.ReadUInt32();
if (ExpressionVal == kReqExpression)
{
Expression = ExpressionOp.ReadOperand(SR);
}
}
}
protected void InitializeFromCert(X509Certificate2 SigningCert, string Bundle, ExpressionOp OldReq = null)
{
BundleIdentifier = Bundle;
int StartIndex = SigningCert.SubjectName.Name.IndexOf("CN=");
int EndIndex = -1;
CertificateName = "";
if (StartIndex > -1)
{
// find the next attribute
StartIndex += 3;
char SearchChar = ',';
if (SigningCert.SubjectName.Name[StartIndex] == '\"')
{
// quotes are around the string because of special characters
StartIndex++;
SearchChar = '\"';
}
EndIndex = SigningCert.SubjectName.Name.IndexOf(SearchChar, StartIndex);
if (EndIndex == -1)
{
// must be at the end, so go to the end
EndIndex = SigningCert.SubjectName.Name.Length;
if (SearchChar == '\"')
{
EndIndex--;
}
}
// get the string
CertificateName = SigningCert.SubjectName.Name.Substring(StartIndex, EndIndex - StartIndex);
}
if (string.IsNullOrEmpty(CertificateName))
{
CertificateName = SigningCert.FriendlyName;
}
// always use the new requirements when initializing from cert
Expression = new AndOp();
(Expression as AndOp).Op1 = new IdentOp();
((Expression as AndOp).Op1 as IdentOp).BundleIdentifier = BundleIdentifier;
(Expression as AndOp).Op2 = new AndOp();
((Expression as AndOp).Op2 as AndOp).Op1 = new ExpressionOp(kOpGenericAnchor);
((Expression as AndOp).Op2 as AndOp).Op2 = new AndOp();
(((Expression as AndOp).Op2 as AndOp).Op2 as AndOp).Op1 = new CertFieldOp();
(((Expression as AndOp).Op2 as AndOp).Op2 as AndOp).Op2 = new CertGenericOp();
}
public static RequirementBlob CreateFromCertificate(X509Certificate2 SigningCert, string Bundle, ExpressionOp OldReq = null)
{
RequirementBlob Blob = new RequirementBlob();
Blob.InitializeFromCert(SigningCert, Bundle, OldReq);
return Blob;
}
public override void ReadData(ReadingContext SR)
{
Op1 = ExpressionOp.ReadOperand(SR);
Op2 = ExpressionOp.ReadOperand(SR);
}
static public ExpressionOp ReadOperand(ReadingContext SR)
{
UInt32 OpVal = SR.ReadUInt32();
ExpressionOp Op = null;
switch (OpVal)
{
case kOpAnd:
Op = new AndOp();
break;
case kOpIdent:
Op = new IdentOp();
break;
case kOpGenericAnchor:
Op = new ExpressionOp(OpVal);
break;
case kOpCertField:
Op = new CertFieldOp();
break;
case kOpCertGeneric:
Op = new CertGenericOp();
break;
case kOpAnchorHash:
Op = new AnchorHashOp();
break;
default:
throw new Exception("Unknown Expression Operand: " + OpVal.ToString());
}
Op.ReadData(SR);
return Op;
}
