protected override void Parse(ref BitStreamReader bsr)
{
StringTablesManager manager = DemoRef.StringTablesManager;
if (!manager.TableReadable.GetValueOrDefault(_tableName))
{
DemoRef.LogError($"{_tableName} table is marked as non-readable, can't update :/");
_exceptionWhileParsing = true;
bsr.SkipToEnd();
return;
}
if (manager.CreationLookup.Single(table => table.TableName == _tableName).Flags == StringTableFlags.Fake)
{
DemoRef.LogError($"{_tableName} table was created manually - not parsed in SvcServerInfo");
_exceptionWhileParsing = true;
bsr.SkipToEnd();
return;
}
try { // se2007/engine/networkstringtable.cpp line 595
MutableStringTable tableToUpdate = manager.Tables[_tableName];
int?decompressedIndex = null;
if (tableToUpdate.Flags.HasValue && (tableToUpdate.Flags & StringTableFlags.DataCompressed) != 0 && _canCompress)
{
// decompress the data - engine/baseclientstate.cpp (hl2_src) line 1364
int uncompressedSize = bsr.ReadSInt();
int compressedSize = bsr.ReadSInt();
byte[] data = Compression.Decompress(ref bsr, compressedSize - 8); // -8 to ignore header
decompressedIndex = DemoRef.DecompressedLookup.Count;
DemoRef.DecompressedLookup.Add(data); // so that we can access the reader for the entries later
if (data.Length != uncompressedSize)
{
throw new Exception("could not decompress data in string table update");
}
bsr = new BitStreamReader(data);
}
int entryIndex = -1;
var history = new C5.CircularQueue <string>(32);
for (int i = 0; i < _numUpdatedEntries; i++)
{
entryIndex++;
if (!bsr.ReadBool())
{
entryIndex = (int)bsr.ReadUInt(BitUtils.HighestBitIndex(tableToUpdate.MaxEntries));
}
string?entryName = null;
if (bsr.ReadBool())
{
if (bsr.ReadBool()) // the first part of the string may be the same as for other entries
{
int index = (int)bsr.ReadUInt(5);
int subStrLen = (int)bsr.ReadUInt(SubStringBits);
entryName = history[index][..subStrLen];
protected override void Parse(ref BitStreamReader bsr)
{
PlayerMasks = new PlayerMask[VoiceMaxPlayers];
for (int i = 0; i < VoiceMaxPlayers; i++)
{
PlayerMasks[i] = new PlayerMask {
GameRulesMask = bsr.ReadSInt(), BanMask = bsr.ReadSInt()
}
}
;
PlayerModEnable = bsr.ReadByte() != 0;
}
protected override void Parse(ref BitStreamReader bsr)
{
FileStamp = bsr.ReadStringOfLength(8);
DemoProtocol = bsr.ReadUInt();
NetworkProtocol = bsr.ReadUInt();
ServerName = bsr.ReadStringOfLength(260);
ClientName = bsr.ReadStringOfLength(260);
MapName = bsr.ReadStringOfLength(260);
GameDirectory = bsr.ReadStringOfLength(260);
PlaybackTime = bsr.ReadFloat();
TickCount = bsr.ReadSInt();
FrameCount = bsr.ReadSInt();
SignOnLength = bsr.ReadUInt();
}
public static unsafe byte[] Decompress(ref BitStreamReader bsr, int compSize)
{
uint type = bsr.ReadUInt();
int decompSize = bsr.ReadSInt();
switch (type)
{
case LZSS_ID:
Span <byte> dataIn = compSize < 100000 ? stackalloc byte[compSize] : new byte[compSize];
bsr.ReadToSpan(dataIn);
byte[] arrOut = new byte[decompSize];
fixed(byte *pDataIn = dataIn)
fixed(byte *pDataOut = arrOut)
DecompressLZSS(pDataIn, pDataOut);
return(arrOut);
case SNAPPY_ID:
Debug.Assert(false);
throw new NotImplementedException("snappy decompression not implemented");
default:
throw new InvalidOperationException("unknown compression method");
}
}
// src_main/common/netmessages.cpp SVC_ServerInfo::WriteToBuffer
protected override void Parse(ref BitStreamReader bsr)
{
NetworkProtocol = bsr.ReadUShort();
ServerCount = bsr.ReadUInt();
IsHltv = bsr.ReadBool();
IsDedicated = bsr.ReadBool();
if (DemoInfo.IsLeft4Dead() && DemoInfo.Game >= SourceGame.L4D2_2147)
{
UnknownBit = bsr.ReadBool();
}
ClientCrc = bsr.ReadSInt();
if (DemoInfo.NewDemoProtocol) // unknown field, could be before ClientCrc
{
Unknown = bsr.ReadUInt();
}
MaxServerClasses = bsr.ReadUShort();
if (NetworkProtocol == 24)
{
MapMD5 = bsr.ReadBytes(16);
}
else
{
MapCrc = bsr.ReadUInt(); // network protocol < 18 according to p2 leak, but doesn't add up for l4d2 and p2
}
PlayerCount = bsr.ReadByte();
MaxClients = bsr.ReadByte();
TickInterval = bsr.ReadFloat();
Platform = (char)bsr.ReadByte();
GameDirBitIndex = bsr.AbsoluteBitIndex;
GameDir = bsr.ReadNullTerminatedString();
MapName = bsr.ReadNullTerminatedString();
SkyName = bsr.ReadNullTerminatedString();
HostName = bsr.ReadNullTerminatedString();
if (DemoInfo.IsLeft4Dead() && DemoInfo.Game >= SourceGame.L4D2_2147)
{
MissionName = bsr.ReadNullTerminatedString();
MutationName = bsr.ReadNullTerminatedString();
}
if (NetworkProtocol == 24)
{
HasReplay = bsr.ReadBool(); // protocol version >= 16
}
// there's a good change that the first SvcServerInfo parsed is parsed correctly
// prevent the interval from being overwritten by subsequent, incorrectly detected, SvcServerInfo messages
// TODO: check if changing tickrate mid game sends another SvcServerInfo
if (!DemoInfo.HasParsedTickInterval)
{
DemoInfo.TickInterval = TickInterval;
DemoInfo.HasParsedTickInterval = true;
}
// this packet always(?) appears before the creation of any tables
DemoRef.StringTablesManager.ClearCurrentTables();
// init baselines here
DemoRef.EntBaseLines = new EntityBaseLines(DemoRef, MaxServerClasses);
}
protected override void Parse(ref BitStreamReader bsr)
{
Armor = bsr.ReadByte();
DamageTaken = bsr.ReadByte();
BitsDamage = bsr.ReadSInt();
bsr.ReadVector3(out VecFrom);
/*VecFrom = new Vector3 { old engine?
* X = bsr.ReadCoord(),
* Y = bsr.ReadCoord(),
* Z = bsr.ReadCoord()
* };*/
}
protected override void Parse(ref BitStreamReader bsr)
{
DataType = (CustomDataType)bsr.ReadSInt();
uint size = bsr.ReadUInt();
DataMessage = CustomDataFactory.CreateCustomDataMessage(DemoRef, DataType);
try {
DataMessage.ParseStream(bsr.SplitAndSkip(size * 8));
} catch (Exception e) {
DemoRef.LogError($"error while parsing custom data of type: {DataType}... {e.Message}");
DataMessage = new UnknownCustomDataMessage(DemoRef);
}
}
protected override void Parse(ref BitStreamReader bsr)
{
Command = bsr.ReadStringOfLength(bsr.ReadSInt());
TimingAdjustment.AdjustFromConsoleCmd(this);
Match match = KeyPressRegex.Match(Command);
if (match.Success)
{
int val = int.Parse(match.Groups[1].Value);
if (val >= 0 && val < (int)Packets.ButtonCode.LAST)
{
ButtonCode = (ButtonCode)val;
}
}
}
protected override void Parse(ref BitStreamReader bsr)
{
int byteLen = bsr.ReadSInt();
int indexBeforeTables = bsr.CurrentBitIndex;
byte tableCount = bsr.ReadByte();
Tables = new List <StringTable>(tableCount);
for (int i = 0; i < tableCount; i++)
{
var table = new StringTable(DemoRef);
Tables.Add(table);
table.ParseStream(ref bsr);
}
bsr.CurrentBitIndex = indexBeforeTables + byteLen * 8;
// if this packet exists make sure to create the tables manager after we parse this
DemoRef.StringTablesManager.CreateTablesFromPacket(this);
}
protected override void Parse(ref BitStreamReader bsr)
{
byte typeVal = bsr.ReadByte();
Type = DemoPacket.ByteToPacketType(DemoInfo, typeVal);
if (Type == PacketType.Unknown)
{
throw new ArgumentException("no byte->packet mapper found for this game!");
}
else if (Type == PacketType.Invalid)
{
throw new ArgumentException($"Illegal packet type: {typeVal}");
}
// very last byte is cut off in (all?) demos, copy data from the previous frame if this is the case
Tick = bsr.BitsRemaining >= 32
? bsr.ReadSInt()
: (int)bsr.ReadUInt(24) | (DemoRef.Frames[^ 2].Tick & (0xff << 24));
// we're reading a player_info_t, so take alignment into account
protected override void Parse(ref BitStreamReader bsr)
{
if (DemoInfo.NewDemoProtocol && !DemoInfo.IsLeft4Dead1())
{
SteamId = (CSteamId)bsr.ReadULong();
}
Name = bsr.ReadStringOfLength(MaxPlayerNameLength);
UserId = bsr.ReadSInt();
Guid = bsr.ReadStringOfLength(SignedGuidLen + 1);
bsr.SkipBytes(3);
FriendsId = bsr.ReadUInt();
FriendsName = bsr.ReadStringOfLength(MaxPlayerNameLength);
FakePlayer = bsr.ReadByte() != 0;
IsHlTv = bsr.ReadByte() != 0;
bsr.SkipBytes(2);
CustomFiles = new[] { bsr.ReadUInt(), bsr.ReadUInt(), bsr.ReadUInt(), bsr.ReadUInt() };
FilesDownloaded = bsr.ReadByte();
bsr.SkipBytes(3);
// for demo protocol 4 there's 4 additional bytes somewhere for some reason
}
protected override void Parse(ref BitStreamReader bsr)
{
// first, we read the main message info here
MaxEntries = (ushort)bsr.ReadUInt(11);
IsDelta = bsr.ReadBool();
DeltaFrom = IsDelta ? bsr.ReadSInt() : -1;
BaseLine = bsr.ReadUInt(1);
UpdatedEntries = (ushort)bsr.ReadUInt(11);
uint dataLen = bsr.ReadUInt(20);
UpdateBaseline = bsr.ReadBool();
_entBsr = bsr.SplitAndSkip(dataLen);
#if !FORCE_PROCESS_ENTS
if ((DemoRef.DemoParseResult & DemoParseResult.EntParsingEnabled) == 0 ||
(DemoRef.DemoParseResult & DemoParseResult.EntParsingFailed) != 0)
{
return;
}
#endif
// now, we do some setup for ent parsing
ref EntitySnapshot?snapshot = ref DemoRef.EntitySnapshot;
protected override void Parse(ref BitStreamReader bsr)
{
SignOnState = (SignOnState)bsr.ReadByte();
SpawnCount = bsr.ReadSInt();
if (DemoInfo.NewDemoProtocol)
{
NumServerPlayers = bsr.ReadUInt();
int length = (int)bsr.ReadUInt();
if (length > 0)
{
PlayerNetworkIds = bsr.ReadBytes(length);
}
length = (int)bsr.ReadUInt();
if (length > 0) // the string still seams to be null terminated (sometimes?)
{
MapName = bsr.ReadStringOfLength(length).Split(new char[] { '\0' }, 2)[0];
}
}
if (SignOnState == SignOnState.PreSpawn)
{
DemoRef.ClientSoundSequence = 1; // reset sound sequence number after receiving SignOn sounds
}
}
public void WriteSInts()
{
var random = new Random(0);
BitStreamWriter bsw = new BitStreamWriter();
List <(int val, int size)> bits = new List <(int val, int size)>();
for (int _ = 0; _ < Iterations; _++)
{
(int val, int size)r = (random.Next(), random.Next(1, 33));
r.val &= int.MaxValue >> (32 - r.size);
if ((r.val & (1 << (r.size - 1))) != 0) // sign extend, not necessary for primitive types
{
r.val |= int.MaxValue << r.size; // can use int here since the leftmost 0 will get shifted away anyway
}
bits.Add(r);
bsw.WriteBitsFromSInt(r.val, r.size);
}
BitStreamReader bsr = new BitStreamReader(bsw);
for (int i = 0; i < Iterations; i++)
{
Assert.AreEqual(bits[i].val, bsr.ReadSInt(bits[i].size), $"index: {i}");
}
}
protected override void Parse(ref BitStreamReader bsr)
{
Unk = bsr.ReadSInt();
}
protected override void Parse(ref BitStreamReader bsr)
{
EntityIndex = bsr.ReadBool() ? bsr.ReadUInt(bsr.ReadBool() ? 5 : DemoInfo.MaxEdictBits) : _deltaTmp.EntityIndex;
#pragma warning disable 8629
if (DemoInfo.NewDemoProtocol)
{
Flags = (SoundFlags?)bsr.ReadUIntIfExists(DemoInfo.SoundFlagBitsEncode) ?? _deltaTmp.Flags;
if ((Flags & SoundFlags.IsScriptHandle) != 0)
{
ScriptHash = bsr.ReadUInt();
}
else
{
SoundNum = (int?)bsr.ReadUIntIfExists(DemoInfo.MaxSndIndexBits) ?? _deltaTmp.SoundNum;
}
}
else
{
SoundNum = (int?)bsr.ReadUIntIfExists(DemoInfo.MaxSndIndexBits) ?? _deltaTmp.SoundNum;
Flags = (SoundFlags?)bsr.ReadUIntIfExists(DemoInfo.SoundFlagBitsEncode) ?? _deltaTmp.Flags;
}
Chan = (Channel?)bsr.ReadUIntIfExists(3) ?? _deltaTmp.Chan;
#pragma warning restore 8629
#region get sound name
if (SoundNum.HasValue)
{
var mgr = DemoRef.StringTablesManager;
if (mgr.TableReadable.GetValueOrDefault(TableNames.SoundPreCache))
{
_soundTableReadable = true;
if (SoundNum >= mgr.Tables[TableNames.SoundPreCache].Entries.Count)
{
DemoRef.LogError($"{GetType().Name} - sound index out of range: {SoundNum}");
}
else if (SoundNum != 0)
{
SoundName = mgr.Tables[TableNames.SoundPreCache].Entries[SoundNum.Value].EntryName;
}
}
}
#endregion
IsAmbient = bsr.ReadBool();
IsSentence = bsr.ReadBool();
if (Flags != SoundFlags.Stop)
{
if (bsr.ReadBool())
{
SequenceNumber = _deltaTmp.SequenceNumber;
}
else if (bsr.ReadBool())
{
SequenceNumber = _deltaTmp.SequenceNumber + 1;
}
else
{
SequenceNumber = bsr.ReadUInt(SndSeqNumberBits);
}
Volume = bsr.ReadUIntIfExists(7) / 127.0f ?? _deltaTmp.Volume;
SoundLevel = bsr.ReadUIntIfExists(MaxSndLvlBits) ?? _deltaTmp.SoundLevel;
Pitch = bsr.ReadUIntIfExists(8) ?? _deltaTmp.Pitch;
if (!DemoInfo.NewDemoProtocol && DemoRef.Header.NetworkProtocol > 21)
{
SpecialDspCount = bsr.ReadByteIfExists() ?? _deltaTmp.SpecialDspCount;
}
if (DemoInfo.NewDemoProtocol)
{
RandomSeed = bsr.ReadSIntIfExists(6) ?? _deltaTmp.RandomSeed; // 6, 18, or 29
Delay = bsr.ReadFloatIfExists() ?? _deltaTmp.Delay;
}
else
{
if (bsr.ReadBool())
{
Delay = bsr.ReadSInt(MaxSndDelayMSecEncodeBits) / 1000.0f;
if (Delay < 0)
{
Delay *= 10.0f;
}
Delay -= SndDelayOffset;
}
else
{
Delay = _deltaTmp.Delay;
}
}
Origin = new Vector3 {
X = bsr.ReadSIntIfExists(PropDecodeConsts.CoordIntBits - 2) * 8 ?? _deltaTmp.Origin.X,
Y = bsr.ReadSIntIfExists(PropDecodeConsts.CoordIntBits - 2) * 8 ?? _deltaTmp.Origin.Y,
Z = bsr.ReadSIntIfExists(PropDecodeConsts.CoordIntBits - 2) * 8 ?? _deltaTmp.Origin.Z
};
SpeakerEntity = bsr.ReadSIntIfExists(DemoInfo.MaxEdictBits + 1) ?? _deltaTmp.SpeakerEntity;
}
else
{
ClearStopFields();
}
}
protected override void Parse(ref BitStreamReader bsr)
{
Unknown = bsr.ReadSInt();
CallbackStr = bsr.ReadNullTerminatedString();
}
protected override void Parse(ref BitStreamReader bsr)
{
Cookie = bsr.ReadSInt();
CvarName = bsr.ReadNullTerminatedString();
}