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Added compression code to packet.

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This commit is contained in:
Filip Maj 2018-04-12 14:18:40 -04:00
parent f30360f245
commit 0492bc4c59
1 changed files with 41 additions and 5 deletions
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44
FFXIVClassic Common Class Lib/BasePacket.cs
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@ -242,6 +242,13 @@ namespace FFXIVClassic.Common
offset += (ushort)subpacketData.Length;
}
//Compress this array into a new one if needed
if (isCompressed)
{
data = CompressData(data);
header.packetSize = (ushort)(BASEPACKET_SIZE + data.Length);
}
Debug.Assert(data != null && offset == data.Length && header.packetSize == 0x10 + offset);
var packet = new BasePacket(header, data);
@ -266,7 +273,15 @@ namespace FFXIVClassic.Common
data = new byte[header.packetSize - 0x10];
//Add Subpackets
var subpacketData = subpacket.GetBytes();
byte[] subpacketData = subpacket.GetBytes();
//Compress this array into a new one if needed
if (isCompressed)
{
subpacketData = CompressData(subpacketData);
header.packetSize = (ushort)(BASEPACKET_SIZE + data.Length);
}
Array.Copy(subpacketData, 0, data, 0, subpacketData.Length);
Debug.Assert(data != null);
@ -291,6 +306,13 @@ namespace FFXIVClassic.Common
//Get packet size
header.packetSize += (ushort) data.Length;
//Compress this array into a new one if needed
if (isCompressed)
{
data = CompressData(data);
header.packetSize = (ushort)(BASEPACKET_SIZE + data.Length);
}
var packet = new BasePacket(header, data);
return packet;
}
@ -390,17 +412,31 @@ namespace FFXIVClassic.Common
{
zipStream.CopyTo(resultStream);
packet.data = resultStream.ToArray();
packet.header.isCompressed = 0;
packet.header.packetSize = (ushort)(BASEPACKET_SIZE + packet.data.Length);
}
}
public static unsafe void CompressPacket(ref BasePacket packet)
public static unsafe BasePacket CompressPacket(BasePacket uncompressedPacket)
{
using (var compressedStream = new MemoryStream(packet.data))
using (var compressedStream = new MemoryStream(uncompressedPacket.data))
using (var zipStream = new ZlibStream(compressedStream, Ionic.Zlib.CompressionMode.Compress))
using (var resultStream = new MemoryStream())
{
zipStream.CopyTo(resultStream);
packet.data = resultStream.ToArray();
BasePacket compressedPacket = BasePacket.CreatePacket(resultStream.ToArray(), uncompressedPacket.header.isAuthenticated == 1, true);
return compressedPacket;
}
}
public static unsafe byte[] CompressData(byte[] data)
{
using (var compressedStream = new MemoryStream(data))
using (var zipStream = new ZlibStream(compressedStream, Ionic.Zlib.CompressionMode.Compress))
using (var resultStream = new MemoryStream())
{
zipStream.CopyTo(resultStream);
return resultStream.ToArray();
}
}