void ParseCertificate(HMParser hm)
{
if (certificateChain != null)
{
throw new Exception("Duplicate Certificate message");
}
List <byte[]> chain = new List <byte[]>();
hm.OpenVar(3);
while (!hm.EndOfStruct)
{
chain.Add(hm.ReadBlobVar(3));
}
hm.Close();
hm.Close();
certificateChain = chain.ToArray();
certificate = (chain.Count > 0) ? chain[0] : null;
}
/*
* Parse messages from the server: from ServerHello to
* ServerHelloDone.
*/
internal void Parse(SSLRecord rec)
{
rec.SetExpectedType(M.HANDSHAKE);
/*
* First parse a ServerHello.
*/
HMParser sh = new HMParser(rec);
if (sh.MessageType != M.SERVER_HELLO)
{
throw new Exception("Not a ServerHello");
}
version = sh.Read2();
byte[] serverRandom = sh.ReadBlobFixed(32);
timeMillis = 1000 * (long)M.Dec32be(serverRandom, 0);
sessionID = sh.ReadBlobVar(1);
if (sessionID.Length > 32)
{
throw new Exception("Oversized session ID");
}
selectedCipherSuite = sh.Read2();
int cm = sh.Read1();
if (cm == 0)
{
deflateCompress = false;
}
else if (cm == 1)
{
deflateCompress = true;
}
else
{
throw new Exception(
"Unknown compression method: " + cm);
}
if (!sh.EndOfStruct)
{
sh.OpenVar(2);
Dictionary <int, bool> d = new Dictionary <int, bool>();
while (!sh.EndOfStruct)
{
int extType = sh.Read2();
if (d.ContainsKey(extType))
{
throw new Exception(
"Duplicate extension: "
+ extType);
}
d[extType] = true;
sh.OpenVar(2);
switch (extType)
{
case M.EXT_SERVER_NAME:
ParseEmptyServerName(sh);
break;
case M.EXT_RENEGOTIATION_INFO:
ParseRenegInfo(sh);
break;
case M.EXT_SUPPORTED_CURVES:
ParseSupportedCurves(sh);
break;
case M.EXT_SUPPORTED_EC_POINTS:
ParseSupportedECPoints(sh);
break;
default:
throw new Exception(
"Unknown extension: "
+ extType);
}
sh.Close();
}
sh.Close();
}
sh.Close();
/*
* Read other messages, up to the ServerHelloDone.
*/
try {
bool seenSHD = false;
while (!seenSHD)
{
HMParser hm = new HMParser(rec);
switch (hm.MessageType)
{
case M.CERTIFICATE:
ParseCertificate(hm);
break;
case M.SERVER_KEY_EXCHANGE:
ParseServerKeyExchange(hm);
break;
case M.CERTIFICATE_REQUEST:
ParseCertificateRequest(hm);
break;
case M.SERVER_HELLO_DONE:
hm.Close();
seenSHD = true;
break;
default:
hm.Close(true);
break;
}
}
} catch {
failedAfterHello = true;
}
recordVersion = rec.GetInVersion();
}