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Diffstat (limited to 'src/Protocol/Protocol_1_8.cpp')
-rw-r--r--src/Protocol/Protocol_1_8.cpp361
1 files changed, 170 insertions, 191 deletions
diff --git a/src/Protocol/Protocol_1_8.cpp b/src/Protocol/Protocol_1_8.cpp
index d9d18b41a..12e2d441c 100644
--- a/src/Protocol/Protocol_1_8.cpp
+++ b/src/Protocol/Protocol_1_8.cpp
@@ -85,7 +85,6 @@ Implements the 1.8 protocol classes:
const int MAX_ENC_LEN = 512; // Maximum size of the encrypted message; should be 128, but who knows...
-const uLongf MAX_COMPRESSED_PACKET_LEN = 200 KiB; // Maximum size of compressed packets.
static const UInt32 CompressionThreshold = 256; // After how large a packet should we compress it.
@@ -178,7 +177,7 @@ void cProtocol_1_8_0::DataReceived(cByteBuffer & a_Buffer, const char * a_Data,
{
if (m_IsEncrypted)
{
- Byte Decrypted[512];
+ std::byte Decrypted[512];
while (a_Size > 0)
{
size_t NumBytes = (a_Size > sizeof(Decrypted)) ? sizeof(Decrypted) : a_Size;
@@ -320,12 +319,12 @@ void cProtocol_1_8_0::SendChatRaw(const AString & a_MessageRaw, eChatType a_Type
-void cProtocol_1_8_0::SendChunkData(const std::string_view a_ChunkData)
+void cProtocol_1_8_0::SendChunkData(const ContiguousByteBufferView a_ChunkData)
{
ASSERT(m_State == 3); // In game mode?
cCSLock Lock(m_CSPacket);
- SendData(a_ChunkData.data(), a_ChunkData.size());
+ SendData(a_ChunkData);
}
@@ -1143,13 +1142,13 @@ void cProtocol_1_8_0::SendPlayerSpawn(const cPlayer & a_Player)
-void cProtocol_1_8_0::SendPluginMessage(const AString & a_Channel, const AString & a_Message)
+void cProtocol_1_8_0::SendPluginMessage(const AString & a_Channel, const ContiguousByteBufferView a_Message)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, pktPluginMessage);
Pkt.WriteString(a_Channel);
- Pkt.WriteBuf(a_Message.data(), a_Message.size());
+ Pkt.WriteBuf(a_Message);
}
@@ -1717,11 +1716,11 @@ void cProtocol_1_8_0::SendWindowProperty(const cWindow & a_Window, size_t a_Prop
-bool cProtocol_1_8_0::CompressPacket(const AString & a_Packet, AString & a_CompressedData)
+void cProtocol_1_8_0::CompressPacket(CircularBufferCompressor & a_Packet, ContiguousByteBuffer & a_CompressedData)
{
- const auto UncompressedSize = a_Packet.size();
+ const auto Uncompressed = a_Packet.GetView();
- if (UncompressedSize < CompressionThreshold)
+ if (Uncompressed.size() < CompressionThreshold)
{
/* Size doesn't reach threshold, not worth compressing.
@@ -1734,7 +1733,7 @@ bool cProtocol_1_8_0::CompressPacket(const AString & a_Packet, AString & a_Compr
----------------------------------------------
*/
const UInt32 DataSize = 0;
- const auto PacketSize = static_cast<UInt32>(cByteBuffer::GetVarIntSize(DataSize) + UncompressedSize);
+ const auto PacketSize = static_cast<UInt32>(cByteBuffer::GetVarIntSize(DataSize) + Uncompressed.size());
cByteBuffer LengthHeaderBuffer(
cByteBuffer::GetVarIntSize(PacketSize) +
@@ -1744,14 +1743,14 @@ bool cProtocol_1_8_0::CompressPacket(const AString & a_Packet, AString & a_Compr
LengthHeaderBuffer.WriteVarInt32(PacketSize);
LengthHeaderBuffer.WriteVarInt32(DataSize);
- AString LengthData;
+ ContiguousByteBuffer LengthData;
LengthHeaderBuffer.ReadAll(LengthData);
- a_CompressedData.reserve(LengthData.size() + UncompressedSize);
- a_CompressedData.assign(LengthData.data(), LengthData.size());
- a_CompressedData.append(a_Packet);
+ a_CompressedData.reserve(LengthData.size() + Uncompressed.size());
+ a_CompressedData = LengthData;
+ a_CompressedData += Uncompressed;
- return true;
+ return;
}
/* Definitely worth compressing.
@@ -1765,28 +1764,11 @@ bool cProtocol_1_8_0::CompressPacket(const AString & a_Packet, AString & a_Compr
----------------------------------------------
*/
- // Compress the data:
- char CompressedData[MAX_COMPRESSED_PACKET_LEN];
-
- uLongf CompressedSize = compressBound(static_cast<uLongf>(a_Packet.size()));
- if (CompressedSize >= MAX_COMPRESSED_PACKET_LEN)
- {
- ASSERT(!"Too high packet size.");
- return false;
- }
-
- if (
- compress2(
- reinterpret_cast<Bytef *>(CompressedData), &CompressedSize,
- reinterpret_cast<const Bytef *>(a_Packet.data()), static_cast<uLongf>(a_Packet.size()), Z_DEFAULT_COMPRESSION
- ) != Z_OK
- )
- {
- return false;
- }
+ const auto CompressedData = a_Packet.Compress();
+ const auto Compressed = CompressedData.GetView();
- const UInt32 DataSize = static_cast<UInt32>(UncompressedSize);
- const auto PacketSize = static_cast<UInt32>(cByteBuffer::GetVarIntSize(DataSize) + CompressedSize);
+ const UInt32 DataSize = static_cast<UInt32>(Uncompressed.size());
+ const auto PacketSize = static_cast<UInt32>(cByteBuffer::GetVarIntSize(DataSize) + Compressed.size());
cByteBuffer LengthHeaderBuffer(
cByteBuffer::GetVarIntSize(PacketSize) +
@@ -1796,14 +1778,12 @@ bool cProtocol_1_8_0::CompressPacket(const AString & a_Packet, AString & a_Compr
LengthHeaderBuffer.WriteVarInt32(PacketSize);
LengthHeaderBuffer.WriteVarInt32(DataSize);
- AString LengthData;
+ ContiguousByteBuffer LengthData;
LengthHeaderBuffer.ReadAll(LengthData);
- a_CompressedData.reserve(LengthData.size() + CompressedSize);
- a_CompressedData.assign(LengthData.data(), LengthData.size());
- a_CompressedData.append(CompressedData, CompressedSize);
-
- return true;
+ a_CompressedData.reserve(LengthData.size() + Compressed.size());
+ a_CompressedData = LengthData;
+ a_CompressedData += Compressed;
}
@@ -1947,7 +1927,7 @@ void cProtocol_1_8_0::AddReceivedData(cByteBuffer & a_Buffer, const char * a_Dat
{
if (a_Buffer.GetReadableSpace() > 0)
{
- AString AllData;
+ ContiguousByteBuffer AllData;
size_t OldReadableSpace = a_Buffer.GetReadableSpace();
a_Buffer.ReadAll(AllData);
a_Buffer.ResetRead();
@@ -1992,12 +1972,11 @@ void cProtocol_1_8_0::AddReceivedData(cByteBuffer & a_Buffer, const char * a_Dat
}
// Check packet for compression:
- UInt32 UncompressedSize = 0;
- AString UncompressedData;
if (m_State == 3)
{
UInt32 NumBytesRead = static_cast<UInt32>(a_Buffer.GetReadableSpace());
+ UInt32 UncompressedSize;
if (!a_Buffer.ReadVarInt(UncompressedSize))
{
m_Client->Kick("Compression packet incomplete");
@@ -2011,113 +1990,35 @@ void cProtocol_1_8_0::AddReceivedData(cByteBuffer & a_Buffer, const char * a_Dat
if (UncompressedSize > 0)
{
// Decompress the data:
- AString CompressedData;
- VERIFY(a_Buffer.ReadString(CompressedData, PacketLen));
- if (InflateString(CompressedData.data(), PacketLen, UncompressedData) != Z_OK)
- {
- m_Client->Kick("Compression failure");
- return;
- }
- PacketLen = static_cast<UInt32>(UncompressedData.size());
- if (PacketLen != UncompressedSize)
- {
- m_Client->Kick("Wrong uncompressed packet size given");
- return;
- }
- }
- }
-
- // Move the packet payload to a separate cByteBuffer, bb:
- cByteBuffer bb(PacketLen + 1);
- if (UncompressedSize == 0)
- {
- // No compression was used, move directly
- VERIFY(a_Buffer.ReadToByteBuffer(bb, static_cast<size_t>(PacketLen)));
- }
- else
- {
- // Compression was used, move the uncompressed data:
- VERIFY(bb.Write(UncompressedData.data(), UncompressedData.size()));
- }
- a_Buffer.CommitRead();
+ m_Extractor.ReadFrom(a_Buffer, PacketLen);
+ a_Buffer.CommitRead();
- UInt32 PacketType;
- if (!bb.ReadVarInt(PacketType))
- {
- // Not enough data
- break;
- }
-
- // Write one NUL extra, so that we can detect over-reads
- bb.Write("\0", 1);
+ const auto UncompressedData = m_Extractor.Extract(UncompressedSize);
+ const auto Uncompressed = UncompressedData.GetView();
+ cByteBuffer bb(Uncompressed.size());
- // Log the packet info into the comm log file:
- if (g_ShouldLogCommIn && m_CommLogFile.IsOpen())
- {
- AString PacketData;
- bb.ReadAll(PacketData);
- bb.ResetRead();
- bb.ReadVarInt(PacketType); // We have already read the packet type once, it will be there again
- ASSERT(PacketData.size() > 0); // We have written an extra NUL, so there had to be at least one byte read
- PacketData.resize(PacketData.size() - 1);
- AString PacketDataHex;
- CreateHexDump(PacketDataHex, PacketData.data(), PacketData.size(), 16);
- m_CommLogFile.Printf("Next incoming packet is type %u (0x%x), length %u (0x%x) at state %d. Payload:\n%s\n",
- PacketType, PacketType, PacketLen, PacketLen, m_State, PacketDataHex.c_str()
- );
- }
+ // Compression was used, move the uncompressed data:
+ VERIFY(bb.Write(Uncompressed.data(), Uncompressed.size()));
- if (!HandlePacket(bb, PacketType))
- {
- // Unknown packet, already been reported, but without the length. Log the length here:
- LOGWARNING("Unhandled packet: type 0x%x, state %d, length %u", PacketType, m_State, PacketLen);
-
- #ifdef _DEBUG
- // Dump the packet contents into the log:
- bb.ResetRead();
- AString Packet;
- bb.ReadAll(Packet);
- Packet.resize(Packet.size() - 1); // Drop the final NUL pushed there for over-read detection
- AString Out;
- CreateHexDump(Out, Packet.data(), Packet.size(), 24);
- LOGD("Packet contents:\n%s", Out.c_str());
- #endif // _DEBUG
-
- // Put a message in the comm log:
- if (g_ShouldLogCommIn && m_CommLogFile.IsOpen())
- {
- m_CommLogFile.Printf("^^^^^^ Unhandled packet ^^^^^^\n\n\n");
+ HandlePacket(bb);
+ continue;
}
-
- return;
}
- // The packet should have 1 byte left in the buffer - the NUL we had added
- if (bb.GetReadableSpace() != 1)
- {
- // Read more or less than packet length, report as error
- LOGWARNING("Protocol 1.8: Wrong number of bytes read for packet 0x%x, state %d. Read %zu bytes, packet contained %u bytes",
- PacketType, m_State, bb.GetUsedSpace() - bb.GetReadableSpace(), PacketLen
- );
+ // Move the packet payload to a separate cByteBuffer, bb:
+ cByteBuffer bb(PacketLen);
- // Put a message in the comm log:
- if (g_ShouldLogCommIn && m_CommLogFile.IsOpen())
- {
- m_CommLogFile.Printf("^^^^^^ Wrong number of bytes read for this packet (exp %d left, got %zu left) ^^^^^^\n\n\n",
- 1, bb.GetReadableSpace()
- );
- m_CommLogFile.Flush();
- }
+ // No compression was used, move directly:
+ VERIFY(a_Buffer.ReadToByteBuffer(bb, static_cast<size_t>(PacketLen)));
+ a_Buffer.CommitRead();
- ASSERT(!"Read wrong number of bytes!");
- m_Client->PacketError(PacketType);
- }
+ HandlePacket(bb);
} // for (ever)
// Log any leftover bytes into the logfile:
if (g_ShouldLogCommIn && (a_Buffer.GetReadableSpace() > 0) && m_CommLogFile.IsOpen())
{
- AString AllData;
+ ContiguousByteBuffer AllData;
size_t OldReadableSpace = a_Buffer.GetReadableSpace();
a_Buffer.ReadAll(AllData);
a_Buffer.ResetRead();
@@ -2367,8 +2268,8 @@ void cProtocol_1_8_0::HandlePacketLoginEncryptionResponse(cByteBuffer & a_ByteBu
{
return;
}
- AString EncKey;
- if (!a_ByteBuffer.ReadString(EncKey, EncKeyLength))
+ ContiguousByteBuffer EncKey;
+ if (!a_ByteBuffer.ReadSome(EncKey, EncKeyLength))
{
return;
}
@@ -2376,8 +2277,8 @@ void cProtocol_1_8_0::HandlePacketLoginEncryptionResponse(cByteBuffer & a_ByteBu
{
return;
}
- AString EncNonce;
- if (!a_ByteBuffer.ReadString(EncNonce, EncNonceLength))
+ ContiguousByteBuffer EncNonce;
+ if (!a_ByteBuffer.ReadSome(EncNonce, EncNonceLength))
{
return;
}
@@ -2391,7 +2292,7 @@ void cProtocol_1_8_0::HandlePacketLoginEncryptionResponse(cByteBuffer & a_ByteBu
// Decrypt EncNonce using privkey
cRsaPrivateKey & rsaDecryptor = cRoot::Get()->GetServer()->GetPrivateKey();
UInt32 DecryptedNonce[MAX_ENC_LEN / sizeof(Int32)];
- int res = rsaDecryptor.Decrypt(reinterpret_cast<const Byte *>(EncNonce.data()), EncNonce.size(), reinterpret_cast<Byte *>(DecryptedNonce), sizeof(DecryptedNonce));
+ int res = rsaDecryptor.Decrypt(EncNonce, reinterpret_cast<Byte *>(DecryptedNonce), sizeof(DecryptedNonce));
if (res != 4)
{
LOGD("Bad nonce length: got %d, exp %d", res, 4);
@@ -2407,7 +2308,7 @@ void cProtocol_1_8_0::HandlePacketLoginEncryptionResponse(cByteBuffer & a_ByteBu
// Decrypt the symmetric encryption key using privkey:
Byte DecryptedKey[MAX_ENC_LEN];
- res = rsaDecryptor.Decrypt(reinterpret_cast<const Byte *>(EncKey.data()), EncKey.size(), DecryptedKey, sizeof(DecryptedKey));
+ res = rsaDecryptor.Decrypt(EncKey, DecryptedKey, sizeof(DecryptedKey));
if (res != 16)
{
LOGD("Bad key length");
@@ -2416,7 +2317,7 @@ void cProtocol_1_8_0::HandlePacketLoginEncryptionResponse(cByteBuffer & a_ByteBu
}
StartEncryption(DecryptedKey);
- m_Client->HandleLogin(m_Client->GetUsername());
+ m_Client->HandleLogin();
}
@@ -2438,22 +2339,22 @@ void cProtocol_1_8_0::HandlePacketLoginStart(cByteBuffer & a_ByteBuffer)
return;
}
- cServer * Server = cRoot::Get()->GetServer();
+ m_Client->SetUsername(std::move(Username));
+
// If auth is required, then send the encryption request:
- if (Server->ShouldAuthenticate())
+ if (const auto Server = cRoot::Get()->GetServer(); Server->ShouldAuthenticate())
{
cPacketizer Pkt(*this, pktEncryptionRequest);
Pkt.WriteString(Server->GetServerID());
- const AString & PubKeyDer = Server->GetPublicKeyDER();
+ const auto PubKeyDer = Server->GetPublicKeyDER();
Pkt.WriteVarInt32(static_cast<UInt32>(PubKeyDer.size()));
- Pkt.WriteBuf(PubKeyDer.data(), PubKeyDer.size());
+ Pkt.WriteBuf(PubKeyDer);
Pkt.WriteVarInt32(4);
Pkt.WriteBEInt32(static_cast<int>(reinterpret_cast<intptr_t>(this))); // Using 'this' as the cryptographic nonce, so that we don't have to generate one each time :)
- m_Client->SetUsername(Username);
return;
}
- m_Client->HandleLogin(Username);
+ m_Client->HandleLogin();
}
@@ -2704,20 +2605,20 @@ void cProtocol_1_8_0::HandlePacketPluginMessage(cByteBuffer & a_ByteBuffer)
HandleVanillaPluginMessage(a_ByteBuffer, Channel);
// Skip any unread data (vanilla sometimes sends garbage at the end of a packet; #1692):
- if (a_ByteBuffer.GetReadableSpace() > 1)
+ if (a_ByteBuffer.GetReadableSpace() > 0)
{
LOGD("Protocol 1.8: Skipping garbage data at the end of a vanilla PluginMessage packet, %u bytes",
- static_cast<unsigned>(a_ByteBuffer.GetReadableSpace() - 1)
+ static_cast<unsigned>(a_ByteBuffer.GetReadableSpace())
);
- a_ByteBuffer.SkipRead(a_ByteBuffer.GetReadableSpace() - 1);
+ a_ByteBuffer.SkipRead(a_ByteBuffer.GetReadableSpace());
}
return;
}
// Read the plugin message and relay to clienthandle:
- AString Data;
- VERIFY(a_ByteBuffer.ReadString(Data, a_ByteBuffer.GetReadableSpace() - 1)); // Always succeeds
+ ContiguousByteBuffer Data;
+ VERIFY(a_ByteBuffer.ReadSome(Data, a_ByteBuffer.GetReadableSpace())); // Always succeeds
m_Client->HandlePluginMessage(Channel, Data);
}
@@ -2976,7 +2877,7 @@ void cProtocol_1_8_0::HandleVanillaPluginMessage(cByteBuffer & a_ByteBuffer, con
HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Brand);
m_Client->SetClientBrand(Brand);
// Send back our brand, including the length:
- SendPluginMessage("MC|Brand", "\x08""Cuberite");
+ m_Client->SendPluginMessage("MC|Brand", "\x08""Cuberite");
return;
}
else if (a_Channel == "MC|Beacon")
@@ -3001,8 +2902,8 @@ void cProtocol_1_8_0::HandleVanillaPluginMessage(cByteBuffer & a_ByteBuffer, con
LOG("Unhandled vanilla plugin channel: \"%s\".", a_Channel.c_str());
// Read the payload and send it through to the clienthandle:
- AString Message;
- VERIFY(a_ByteBuffer.ReadString(Message, a_ByteBuffer.GetReadableSpace() - 1));
+ ContiguousByteBuffer Message;
+ VERIFY(a_ByteBuffer.ReadSome(Message, a_ByteBuffer.GetReadableSpace() - 1));
m_Client->HandlePluginMessage(a_Channel, Message);
}
@@ -3010,23 +2911,24 @@ void cProtocol_1_8_0::HandleVanillaPluginMessage(cByteBuffer & a_ByteBuffer, con
-void cProtocol_1_8_0::SendData(const char * a_Data, size_t a_Size)
+void cProtocol_1_8_0::SendData(ContiguousByteBufferView a_Data)
{
if (m_IsEncrypted)
{
- Byte Encrypted[8192]; // Larger buffer, we may be sending lots of data (chunks)
- while (a_Size > 0)
+ std::byte Encrypted[8 KiB]; // Larger buffer, we may be sending lots of data (chunks)
+
+ while (a_Data.size() > 0)
{
- size_t NumBytes = (a_Size > sizeof(Encrypted)) ? sizeof(Encrypted) : a_Size;
- m_Encryptor.ProcessData(Encrypted, reinterpret_cast<const Byte *>(a_Data), NumBytes);
- m_Client->SendData(reinterpret_cast<const char *>(Encrypted), NumBytes);
- a_Size -= NumBytes;
- a_Data += NumBytes;
+ const auto NumBytes = (a_Data.size() > sizeof(Encrypted)) ? sizeof(Encrypted) : a_Data.size();
+ m_Encryptor.ProcessData(Encrypted, a_Data.data(), NumBytes);
+ m_Client->SendData({ Encrypted, NumBytes });
+
+ a_Data = a_Data.substr(NumBytes);
}
}
else
{
- m_Client->SendData(a_Data, a_Size);
+ m_Client->SendData(a_Data);
}
}
@@ -3054,8 +2956,8 @@ bool cProtocol_1_8_0::ReadItem(cByteBuffer & a_ByteBuffer, cItem & a_Item, size_
a_Item.Empty();
}
- AString Metadata;
- if (!a_ByteBuffer.ReadString(Metadata, a_ByteBuffer.GetReadableSpace() - a_KeepRemainingBytes - 1) || (Metadata.size() == 0) || (Metadata[0] == 0))
+ ContiguousByteBuffer Metadata;
+ if (!a_ByteBuffer.ReadSome(Metadata, a_ByteBuffer.GetReadableSpace() - a_KeepRemainingBytes) || Metadata.empty() || (Metadata[0] == std::byte(0)))
{
// No metadata
return true;
@@ -3069,10 +2971,10 @@ bool cProtocol_1_8_0::ReadItem(cByteBuffer & a_ByteBuffer, cItem & a_Item, size_
-void cProtocol_1_8_0::ParseItemMetadata(cItem & a_Item, const AString & a_Metadata)
+void cProtocol_1_8_0::ParseItemMetadata(cItem & a_Item, const ContiguousByteBufferView a_Metadata)
{
// Parse into NBT:
- cParsedNBT NBT(a_Metadata.data(), a_Metadata.size());
+ cParsedNBT NBT(a_Metadata);
if (!NBT.IsValid())
{
AString HexDump;
@@ -3189,33 +3091,34 @@ eBlockFace cProtocol_1_8_0::FaceIntToBlockFace(const Int32 a_BlockFace)
void cProtocol_1_8_0::SendPacket(cPacketizer & a_Pkt)
{
- UInt32 PacketLen = static_cast<UInt32>(m_OutPacketBuffer.GetUsedSpace());
- AString PacketData, CompressedPacket;
- m_OutPacketBuffer.ReadAll(PacketData);
+ ASSERT(m_OutPacketBuffer.GetReadableSpace() == m_OutPacketBuffer.GetUsedSpace());
+
+ m_Compressor.ReadFrom(m_OutPacketBuffer);
m_OutPacketBuffer.CommitRead();
+ const auto PacketData = m_Compressor.GetView();
+
if (m_State == 3)
{
+ ContiguousByteBuffer CompressedPacket;
+
// Compress the packet payload:
- if (!cProtocol_1_8_0::CompressPacket(PacketData, CompressedPacket))
- {
- return;
- }
+ cProtocol_1_8_0::CompressPacket(m_Compressor, CompressedPacket);
// Send the packet's payload compressed:
- SendData(CompressedPacket.data(), CompressedPacket.size());
+ SendData(CompressedPacket);
}
else
{
// Compression doesn't apply to this state, send raw data:
- m_OutPacketLenBuffer.WriteVarInt32(PacketLen);
- AString LengthData;
+ m_OutPacketLenBuffer.WriteVarInt32(static_cast<UInt32>(PacketData.size()));
+ ContiguousByteBuffer LengthData;
m_OutPacketLenBuffer.ReadAll(LengthData);
- SendData(LengthData.data(), LengthData.size());
+ m_OutPacketLenBuffer.CommitRead();
+ SendData(LengthData);
// Send the packet's payload directly:
- m_OutPacketLenBuffer.CommitRead();
- SendData(PacketData.data(), PacketData.size());
+ SendData(PacketData);
}
// Log the comm into logfile:
@@ -3226,7 +3129,7 @@ void cProtocol_1_8_0::SendPacket(cPacketizer & a_Pkt)
CreateHexDump(Hex, PacketData.data(), PacketData.size(), 16);
m_CommLogFile.Printf("Outgoing packet: type %s (translated to 0x%02x), length %u (0x%04x), state %d. Payload (incl. type):\n%s\n",
cPacketizer::PacketTypeToStr(a_Pkt.GetPacketType()), GetPacketID(a_Pkt.GetPacketType()),
- PacketLen, PacketLen, m_State, Hex
+ PacketData.size(), PacketData.size(), m_State, Hex
);
/*
// Useful for debugging a new protocol:
@@ -3346,13 +3249,13 @@ void cProtocol_1_8_0::WriteItem(cPacketizer & a_Pkt, const cItem & a_Item)
}
Writer.Finish();
- AString Result = Writer.GetResult();
- if (Result.size() == 0)
+ const auto Result = Writer.GetResult();
+ if (Result.empty())
{
a_Pkt.WriteBEInt8(0);
return;
}
- a_Pkt.WriteBuf(Result.data(), Result.size());
+ a_Pkt.WriteBuf(Result);
}
@@ -3479,7 +3382,7 @@ void cProtocol_1_8_0::WriteBlockEntity(cPacketizer & a_Pkt, const cBlockEntity &
}
Writer.Finish();
- a_Pkt.WriteBuf(Writer.GetResult().data(), Writer.GetResult().size());
+ a_Pkt.WriteBuf(Writer.GetResult());
}
@@ -3978,6 +3881,82 @@ void cProtocol_1_8_0::WriteEntityProperties(cPacketizer & a_Pkt, const cEntity &
+void cProtocol_1_8_0::HandlePacket(cByteBuffer & a_Buffer)
+{
+ UInt32 PacketType;
+ if (!a_Buffer.ReadVarInt(PacketType))
+ {
+ // Not enough data
+ return;
+ }
+
+ // Log the packet info into the comm log file:
+ if (g_ShouldLogCommIn && m_CommLogFile.IsOpen())
+ {
+ ContiguousByteBuffer PacketData;
+ a_Buffer.ReadAll(PacketData);
+ a_Buffer.ResetRead();
+ a_Buffer.ReadVarInt(PacketType); // We have already read the packet type once, it will be there again
+ ASSERT(PacketData.size() > 0); // We have written an extra NUL, so there had to be at least one byte read
+ PacketData.resize(PacketData.size() - 1);
+ AString PacketDataHex;
+ CreateHexDump(PacketDataHex, PacketData.data(), PacketData.size(), 16);
+ m_CommLogFile.Printf("Next incoming packet is type %u (0x%x), length %u (0x%x) at state %d. Payload:\n%s\n",
+ PacketType, PacketType, a_Buffer.GetUsedSpace(), a_Buffer.GetUsedSpace(), m_State, PacketDataHex.c_str()
+ );
+ }
+
+ if (!HandlePacket(a_Buffer, PacketType))
+ {
+ // Unknown packet, already been reported, but without the length. Log the length here:
+ LOGWARNING("Unhandled packet: type 0x%x, state %d, length %u", PacketType, m_State, a_Buffer.GetUsedSpace());
+
+#ifdef _DEBUG
+ // Dump the packet contents into the log:
+ a_Buffer.ResetRead();
+ ContiguousByteBuffer Packet;
+ a_Buffer.ReadAll(Packet);
+ Packet.resize(Packet.size() - 1); // Drop the final NUL pushed there for over-read detection
+ AString Out;
+ CreateHexDump(Out, Packet.data(), Packet.size(), 24);
+ LOGD("Packet contents:\n%s", Out.c_str());
+#endif // _DEBUG
+
+ // Put a message in the comm log:
+ if (g_ShouldLogCommIn && m_CommLogFile.IsOpen())
+ {
+ m_CommLogFile.Printf("^^^^^^ Unhandled packet ^^^^^^\n\n\n");
+ }
+
+ return;
+ }
+
+ // The packet should have nothing left in the buffer:
+ if (a_Buffer.GetReadableSpace() != 0)
+ {
+ // Read more or less than packet length, report as error
+ LOGWARNING("Protocol 1.8: Wrong number of bytes read for packet 0x%x, state %d. Read %zu bytes, packet contained %u bytes",
+ PacketType, m_State, a_Buffer.GetUsedSpace() - a_Buffer.GetReadableSpace(), a_Buffer.GetUsedSpace()
+ );
+
+ // Put a message in the comm log:
+ if (g_ShouldLogCommIn && m_CommLogFile.IsOpen())
+ {
+ m_CommLogFile.Printf("^^^^^^ Wrong number of bytes read for this packet (exp %d left, got %zu left) ^^^^^^\n\n\n",
+ 1, a_Buffer.GetReadableSpace()
+ );
+ m_CommLogFile.Flush();
+ }
+
+ ASSERT(!"Read wrong number of bytes!");
+ m_Client->PacketError(PacketType);
+ }
+}
+
+
+
+
+
void cProtocol_1_8_0::SendEntityTeleport(const cEntity & a_Entity)
{
cPacketizer Pkt(*this, pktTeleportEntity);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 23:48:23 +0100