private void FormNodeContentEditor_Load(object sender, System.EventArgs e)
{
textBoxTag.Text = String.Format("{0:X2}", aNode.Tag);
textBoxNodeContent.Text = aNode.GetDataStr(pureHexMode);
string msg = "";
msg = String.Format("Tag:{0} (0x{0:X2}) : {1} \r\n"
+ "Offset:{2,4} (0x{2:X8})\r\n"
+ "Length:{3,4} (0x{3:X8})\r\n"
+ "Deepness: {4}\r\n"
,
aNode.Tag,
Asn1Util.GetTagName(aNode.Tag),
aNode.DataOffset,
aNode.DataLength,
aNode.Deepness
);
if ((aNode.Tag & Asn1Tag.TAG_MASK) == Asn1Tag.BIT_STRING)
{
msg += "Unused Bits: " + aNode.UnusedBits.ToString() + "\r\n";
}
msg += "Path: " + aNode.Path + "\r\n";
textBox1.Text = msg;
if (aNode.ChildNodeCount > 0)
{
textBoxNodeContent.Enabled = false;
buttonOK.Enabled = false;
}
else
{
textBoxNodeContent.Enabled = true;
buttonOK.Enabled = true;
}
textBoxTag.ReadOnly = !enableTagEdit;
if (textBoxNodeContent.Enabled)
{
textBoxNodeContent.Enabled = !enableTagEdit;
}
}
private static void BuildRoot(KerberosAuthorizeMessage msg, Asn1Node root)
{
if (root.ChildNodeCount == 2L)
{
Asn1Node childNode = root.GetChildNode(0);
if (((int)childNode.Tag & 31) != 6)
{
throw new Exception("OBJECT_IDENTIFIER expected. (path: " + childNode.Path + ")");
}
msg.MechType = new MechType(childNode.GetDataStr(false));
msg.NegotiationToken = (NegotiationToken) new NegTokenInit();
KerberosAuthorizeMessageBuilder.BuildNegotiateTokenInit((NegTokenInit)msg.NegotiationToken, root.GetChildNode(1).GetChildNode(0));
}
else
{
if (root.ChildNodeCount != 1L)
{
return;
}
msg.NegotiationToken = (NegotiationToken) new NegTokenInit();
KerberosAuthorizeMessageBuilder.BuildNegotiateTokenInit((NegTokenInit)msg.NegotiationToken, root.GetChildNode(0));
}
}
private void CheckStructure()
{
validStructure = false;
if ((root.Tag & Asn1Tag.TAG_MASK) == Asn1Tag.SEQUENCE &&
root.ChildNodeCount == 2)
{
Asn1Node tt = root.GetChildNode(0);
if ((tt.Tag & Asn1Tag.TAG_MASK) != Asn1Tag.OBJECT_IDENTIFIER ||
tt.GetDataStr(false) != "1.2.840.113549.1.7.2")
{
throw new InvalidPKCS7Data();
}
tt = root.GetChildNode(1); // [0]
if (tt.ChildNodeCount != 1)
{
throw new InvalidPKCS7Data();
}
int curChild = 0;
tt = tt.GetChildNode(curChild++); // Seq
if (tt.ChildNodeCount < 4 || (tt.Tag & Asn1Tag.TAG_MASK) != Asn1Tag.SEQUENCE)
{
throw new InvalidPKCS7Data();
}
Asn1Node tt2 = tt.GetChildNode(0); // version
if ((tt2.Tag & Asn1Tag.TAG_MASK) != Asn1Tag.INTEGER)
{
throw new InvalidPKCS7Data();
}
tt2 = tt.GetChildNode(curChild++); // digest algo
// TODO: check algo
if ((tt2.Tag & Asn1Tag.TAG_MASK) != Asn1Tag.SET)
{
throw new InvalidPKCS7Data();
}
tt2 = tt.GetChildNode(curChild++); // pkcs7 data
if ((tt2.Tag & Asn1Tag.TAG_MASK) != Asn1Tag.SEQUENCE && tt2.ChildNodeCount != 2)
{
throw new InvalidPKCS7Data();
}
data = tt2.GetChildNode(1).GetChildNode(0);
if (tt.ChildNodeCount == 5)
{
// cert chain, this is optional
certChain = new List <X509Cert>();
tt2 = tt.GetChildNode(curChild++);
if (tt2.ChildNodeCount == 0)
{
throw new InvalidPKCS7Data();
}
for (int i = 0; i < tt2.ChildNodeCount; i++)
{
certChain.Add(new X509Cert(tt2.GetChildNode(i)));
}
}
tt2 = tt.GetChildNode(curChild++); // signer's info
if ((tt2.Tag & Asn1Tag.TAG_MASK) != Asn1Tag.SET || tt2.ChildNodeCount == 0)
{
throw new InvalidPKCS7Data();
}
sinfos = new List <SignerInfo>();
for (int i = 0; i < tt2.ChildNodeCount; i++)
{
sinfos.Add(new SignerInfo(tt2.GetChildNode(i)));
}
validStructure = true;
}
}