ReadUInt16() public method

public ReadUInt16 ( ) : UInt16
return System.UInt16
示例#1
0
        protected override void DecodeDataBytes(ProtocolVersion version, byte[] data)
        {
            CertificateTypes.Clear();
            CertificateAuthorities.Clear();

            MemoryStream    memStream = new MemoryStream(data);
            HandshakeStream stream    = new HandshakeStream(memStream);

            int typesLength = stream.ReadUInt8();

            for (int i = 0; i < typesLength; i++)
            {
                CertificateTypes.Add(stream.ReadUInt8());
            }

            if (version.HasSelectableSighash)
            {
                int sighashLength = stream.ReadUInt16();
                if ((sighashLength % 2) != 0)
                {
                    throw new AlertException(AlertDescription.IllegalParameter,
                                             "SianatureAndHashAlgorithms length invalid: " + sighashLength);
                }

                byte[] sighashData = stream.ReadBytes(sighashLength);
                for (int i = 0; i < sighashLength; i += 2)
                {
                    SignatureAndHashAlgorithms.Add((UInt16)((sighashData[i] << 8) | sighashData[i + 1]));
                }
            }

            int authsLength = stream.ReadUInt16();

            byte[] authData = stream.ReadBytes(authsLength);
            stream.ConfirmEndOfStream();

            int position = 0;

            while (position < authData.Length)
            {
                int authLength = (authData[position] << 8) | authData[position + 1];
                position += 2;

                if (position > authData.Length)
                {
                    throw new AlertException(AlertDescription.IllegalParameter,
                                             "Authorities total length doesn't match contents");
                }

                string name = Encoding.ASCII.GetString(authData, position, authLength);
                position += authLength;

                CertificateAuthorities.Add(name);
            }
        }
示例#2
0
        protected override void DecodeDataBytes(ProtocolVersion ver, byte[] data)
        {
            MemoryStream    memStream = new MemoryStream(data);
            HandshakeStream stream    = new HandshakeStream(memStream);

            byte major = stream.ReadUInt8();
            byte minor = stream.ReadUInt8();

            ServerVersion = new ProtocolVersion(major, minor);

            byte[] randomBytes = stream.ReadBytes(32);
            Random = new HandshakeRandom(randomBytes);

            int idLength = (int)stream.ReadUInt8();

            SessionID = stream.ReadBytes(idLength);

            CipherSuite       = stream.ReadUInt16();
            CompressionMethod = stream.ReadUInt8();

            byte[] extensionList = new byte[0];
            if (!stream.EndOfStream && ServerVersion.HasExtensions)
            {
                UInt16 extensionListLength = stream.ReadUInt16();
                extensionList = stream.ReadBytes(extensionListLength);
            }
            stream.ConfirmEndOfStream();

            int pos = 0;

            while (pos + 4 <= extensionList.Length)
            {
                UInt16 extensionType       = (UInt16)((extensionList[pos] << 8) | extensionList[pos + 1]);
                UInt16 extensionDataLength = (UInt16)((extensionList[pos + 2] << 8) | extensionList[pos + 3]);
                pos += 4;

                if (pos + extensionDataLength > extensionList.Length)
                {
                    throw new AlertException(AlertDescription.IllegalParameter,
                                             "ServerHello extension data length too large: " + extensionDataLength);
                }

                byte[] extensionData = new byte[extensionDataLength];
                Buffer.BlockCopy(extensionList, pos, extensionData, 0, extensionData.Length);
                pos += extensionData.Length;

                Extensions.Add(new HelloExtension(extensionType, extensionData));
            }
        }
        protected override void DecodeDataBytes(ProtocolVersion version, byte[] data)
        {
            CertificateTypes.Clear();
            CertificateAuthorities.Clear();

            MemoryStream memStream = new MemoryStream(data);
            HandshakeStream stream = new HandshakeStream(memStream);

            int typesLength = stream.ReadUInt8();
            for (int i=0; i<typesLength; i++) {
                CertificateTypes.Add(stream.ReadUInt8());
            }

            if (version.HasSelectableSighash) {
                int sighashLength = stream.ReadUInt16();
                if ((sighashLength%2) != 0) {
                    throw new AlertException(AlertDescription.IllegalParameter,
                                             "SianatureAndHashAlgorithms length invalid: " + sighashLength);
                }

                byte[] sighashData = stream.ReadBytes(sighashLength);
                for (int i=0; i<sighashLength; i+=2) {
                    SignatureAndHashAlgorithms.Add((UInt16)((sighashData[i] << 8) | sighashData[i+1]));
                }
            }

            int authsLength = stream.ReadUInt16();
            byte[] authData = stream.ReadBytes(authsLength);
            stream.ConfirmEndOfStream();

            int position=0;
            while (position < authData.Length) {
                int authLength = (authData[position] << 8) | authData[position+1];
                position += 2;

                if (position > authData.Length) {
                    throw new AlertException(AlertDescription.IllegalParameter,
                                             "Authorities total length doesn't match contents");
                }

                string name = Encoding.ASCII.GetString(authData, position, authLength);
                position += authLength;

                CertificateAuthorities.Add(name);
            }
        }
示例#4
0
        protected override void DecodeDataBytes(ProtocolVersion ver, byte[] data)
        {
            CipherSuites.Clear();
            CompressionMethods.Clear();

            MemoryStream memStream = new MemoryStream(data);
            HandshakeStream stream = new HandshakeStream(memStream);

            byte major = stream.ReadUInt8();
            byte minor = stream.ReadUInt8();
            ClientVersion = new ProtocolVersion(major, minor);

            byte[] randomBytes = stream.ReadBytes(32);
            Random = new HandshakeRandom(randomBytes);

            int idLength = (int) stream.ReadUInt8();
            SessionID = stream.ReadBytes(idLength);

            if (ClientVersion.IsUsingDatagrams) {
                int cookieLength = (int) stream.ReadUInt8();
                Cookie = stream.ReadBytes(cookieLength);
            }

            int cipherLength = (int) stream.ReadUInt16();
            for (int i=0; i<cipherLength; i+=2) {
                CipherSuites.Add(stream.ReadUInt16());
            }

            int compressionLength = (int) stream.ReadUInt8();
            for (int i=0; i<compressionLength; i++) {
                CompressionMethods.Add(stream.ReadUInt8());
            }

            byte[] extensionList = new byte[0];
            if (!stream.EndOfStream && ClientVersion.HasExtensions) {
                UInt16 extensionListLength = stream.ReadUInt16();
                extensionList = stream.ReadBytes(extensionListLength);
            }
            stream.ConfirmEndOfStream();

            int pos = 0;
            while (pos+4 <= extensionList.Length) {
                UInt16 extensionType = (UInt16) ((extensionList[pos] << 8) | extensionList[pos+1]);
                UInt16 extensionDataLength = (UInt16) ((extensionList[pos+2] << 8) | extensionList[pos+3]);
                pos += 4;

                if (pos+extensionDataLength > extensionList.Length) {
                    throw new AlertException(AlertDescription.IllegalParameter,
                                             "ClientHello extension data length too large: " + extensionDataLength);
                }

                byte[] extensionData = new byte[extensionDataLength];
                Buffer.BlockCopy(extensionList, pos, extensionData, 0, extensionData.Length);
                pos += extensionData.Length;

                Extensions.Add(new HelloExtension(extensionType, extensionData));
            }
        }