private void CalculateProtocol15Hack(Int32 dataLength)
{
/*
* Valve broke network protocol 15 by changing the protocol without incrementing the protocol number.
*
* The change adds an extra bit after each message ID, so the only thing that's guaranteed to read correctly with every protocol 15 demo now if the header.
*
* The first message in the first sigon frame is always svc_print or svc_serverinfo, so if either of those are invalid, odds are that the demo uses the changed protocol.
*
*/
// read in data block
Byte[] frameData = parser.Reader.ReadBytes(dataLength);
BitBuffer bitBuffer = new BitBuffer(frameData);
// parse messages
SourceDemoParser.MessageId messageId = (SourceDemoParser.MessageId)bitBuffer.ReadUnsignedBits(5);
if (messageId == SourceDemoParser.MessageId.SVC_Print)
{
String s = bitBuffer.ReadString();
if (s.Contains("Map") || s.Contains("Build") || s.Contains("Players"))
{
// Looks like a valid svc_print string.
return;
}
Protocol15Hack = true;
}
else if (messageId == SourceDemoParser.MessageId.SVC_ServerInfo)
{
UInt32 networkProtocol = bitBuffer.ReadUnsignedBits(16);
if (networkProtocol != this.networkProtocol)
{
// Should match header, must be invalid.
Protocol15Hack = true;
}
}
}
private void CalculateProtocol15Hack(Int32 dataLength)
{
/*
* Valve broke network protocol 15 by changing the protocol without incrementing the protocol number.
*
* The change adds an extra bit after each message ID, so the only thing that's guaranteed to read correctly with every protocol 15 demo now if the header.
*
* The first message in the first sigon frame is always svc_print or svc_serverinfo, so if either of those are invalid, odds are that the demo uses the changed protocol.
*
*/
// read in data block
Byte[] frameData = parser.Reader.ReadBytes(dataLength);
BitBuffer bitBuffer = new BitBuffer(frameData);
// parse messages
SourceDemoParser.MessageId messageId = (SourceDemoParser.MessageId)bitBuffer.ReadUnsignedBits(5);
if (messageId == SourceDemoParser.MessageId.SVC_Print)
{
String s = bitBuffer.ReadString();
if (s.Contains("Map") || s.Contains("Build") || s.Contains("Players"))
{
// Looks like a valid svc_print string.
return;
}
Protocol15Hack = true;
}
else if (messageId == SourceDemoParser.MessageId.SVC_ServerInfo)
{
UInt32 networkProtocol = bitBuffer.ReadUnsignedBits(16);
if (networkProtocol != this.networkProtocol)
{
// Should match header, must be invalid.
Protocol15Hack = true;
}
}
}
/// <summary>
/// Parses S2C_PLAYER.
/// </summary>
/// <param name="data"></param>
/// <param name="si"></param>
private void ParsePlayerQueryReply(BitBuffer bitBuffer)
{
Int32 nPlayers = bitBuffer.ReadByte();
for (Int32 i = 0; i < nPlayers; i++)
{
bitBuffer.SeekBytes(1); // skip index
Player player = new Player();
player.Name = bitBuffer.ReadString();
player.Score = bitBuffer.ReadInt32();
Single time = bitBuffer.ReadSingle();
player.Time = (time == -1 ? "BOT" : Common.DurationString(time));
mainWindowInterface.AddPlayerToServer(this, player);
}
}
/// <summary>
/// Parses S2C_INFO.
/// </summary>
/// <param name="data"></param>
/// <param name="si"></param>
private void ParseInfoQueryReply(Byte[] data)
{
BitBuffer bitBuffer = new BitBuffer(data);
if (bitBuffer.ReadInt32() != -1)
{
throw new ApplicationException("Bad A2S_INFO reply");
}
// read reply type
Byte type = bitBuffer.ReadByte();
Boolean sourceEngine;
if (type == S2C_INFO_SOURCE)
{
sourceEngine = true;
}
else if (type == S2C_INFO_GOLDSRC)
{
sourceEngine = false;
}
else
{
throw new ApplicationException(String.Format("Bad A2S_INFO type: {0}", type));
}
mainWindowInterface.SetServerProperty(this, "SourceEngine", sourceEngine);
// read the rest
if (!sourceEngine)
{
bitBuffer.ReadString();
//si.Address = bitBuffer.ReadString(); // resolved hostname
}
else
{
bitBuffer.SeekBytes(1); // network version
}
mainWindowInterface.SetServerProperty(this, "Title", bitBuffer.ReadString()); // server name
mainWindowInterface.SetServerProperty(this, "Map", bitBuffer.ReadString()); // map
String gameFolder = bitBuffer.ReadString();
mainWindowInterface.SetServerProperty(this, "GameFolder", gameFolder); // game folder
String gameName = bitBuffer.ReadString(); // game name
if (sourceEngine)
{
bitBuffer.SeekBytes(2); // app id
}
mainWindowInterface.SetServerProperty(this, "NumSpectators", bitBuffer.ReadByte()); // num spectators
mainWindowInterface.SetServerProperty(this, "MaxSpectators", bitBuffer.ReadByte()); // max spectators
bitBuffer.SeekBytes(1); // goldsrc: network version, source: num bots
bitBuffer.SeekBytes(1); // dedicated
bitBuffer.SeekBytes(1); // os
mainWindowInterface.SetServerProperty(this, "PasswordProtected", (bitBuffer.ReadByte() == 1));
// determine game name
Game game = GameManager.Find((sourceEngine ? Game.Engines.Source : Game.Engines.HalfLife), gameFolder);
if (game == null)
{
mainWindowInterface.SetServerProperty(this, "GameName", gameName);
}
else
{
mainWindowInterface.SetServerProperty(this, "GameName", game.Name);
}
}
private Object ParseEntry(BitBuffer bitBuffer, Entry e)
{
Boolean signed = ((e.Flags & EntryFlags.Signed) != 0);
if ((e.Flags & EntryFlags.Byte) != 0)
{
if (signed)
{
return((SByte)ParseInt(bitBuffer, e));
}
else
{
return((Byte)ParseUnsignedInt(bitBuffer, e));
}
}
if ((e.Flags & EntryFlags.Short) != 0)
{
if (signed)
{
return((Int16)ParseInt(bitBuffer, e));
}
else
{
return((UInt16)ParseUnsignedInt(bitBuffer, e));
}
}
if ((e.Flags & EntryFlags.Integer) != 0)
{
if (signed)
{
return((Int32)ParseInt(bitBuffer, e));
}
else
{
return((UInt32)ParseUnsignedInt(bitBuffer, e));
}
}
if ((e.Flags & EntryFlags.Float) != 0 || (e.Flags & EntryFlags.TimeWindow8) != 0 || (e.Flags & EntryFlags.TimeWindowBig) != 0)
{
Boolean negative = false;
Int32 bitsToRead = (Int32)e.nBits;
if (signed)
{
negative = bitBuffer.ReadBoolean();
bitsToRead--;
}
return((Single)bitBuffer.ReadUnsignedBits(bitsToRead) / e.Divisor * (negative ? -1.0f : 1.0f));
}
if ((e.Flags & EntryFlags.Angle) != 0)
{
return((Single)(bitBuffer.ReadUnsignedBits((Int32)e.nBits) * (360.0f / (Single)(1 << (Int32)e.nBits))));
}
if ((e.Flags & EntryFlags.String) != 0)
{
return(bitBuffer.ReadString());
}
throw new ApplicationException(String.Format("Unknown delta entry type {0}.", e.Flags));
}
private Object ParseEntry(BitBuffer bitBuffer, Entry e)
{
Boolean signed = ((e.Flags & EntryFlags.Signed) != 0);
if ((e.Flags & EntryFlags.Byte) != 0)
{
if (signed)
{
return (SByte)ParseInt(bitBuffer, e);
}
else
{
return (Byte)ParseUnsignedInt(bitBuffer, e);
}
}
if ((e.Flags & EntryFlags.Short) != 0)
{
if (signed)
{
return (Int16)ParseInt(bitBuffer, e);
}
else
{
return (UInt16)ParseUnsignedInt(bitBuffer, e);
}
}
if ((e.Flags & EntryFlags.Integer) != 0)
{
if (signed)
{
return (Int32)ParseInt(bitBuffer, e);
}
else
{
return (UInt32)ParseUnsignedInt(bitBuffer, e);
}
}
if ((e.Flags & EntryFlags.Float) != 0 || (e.Flags & EntryFlags.TimeWindow8) != 0 || (e.Flags & EntryFlags.TimeWindowBig) != 0)
{
Boolean negative = false;
Int32 bitsToRead = (Int32)e.nBits;
if (signed)
{
negative = bitBuffer.ReadBoolean();
bitsToRead--;
}
return (Single)bitBuffer.ReadUnsignedBits(bitsToRead) / e.Divisor * (negative ? -1.0f : 1.0f);
}
if ((e.Flags & EntryFlags.Angle) != 0)
{
return (Single)(bitBuffer.ReadUnsignedBits((Int32)e.nBits) * (360.0f / (Single)(1 << (Int32)e.nBits)));
}
if ((e.Flags & EntryFlags.String) != 0)
{
return bitBuffer.ReadString();
}
throw new ApplicationException(String.Format("Unknown delta entry type {0}.", e.Flags));
}
private void MessageDisconnect()
{
bitBuffer.ReadString(); // Disconnect reason?
}
public void MessageDownload()
{
bitBuffer.SeekBits(32);
bitBuffer.ReadString();
bitBuffer.SeekBits(1);
}
