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Next iteration on the 1.3.2 protocol. Still no good, but sometimes it just gets through. For your testing pleasures ;)

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git-svn-id: http://mc-server.googlecode.com/svn/trunk@819 0a769ca7-a7f5-676a-18bf-c427514a06d6
This commit is contained in:
madmaxoft@gmail.com
2012-09-02 12:09:58 +00:00
parent 926903905b
commit c7d5c00a17
10 changed files with 120 additions and 42 deletions
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124
source/Protocol132.cpp
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@@ -52,11 +52,12 @@ enum
{
PACKET_KEEP_ALIVE = 0x00,
PACKET_LOGIN = 0x01,
PACKET_COMPASS = 0x06,
PACKET_PLAYER_SPAWN = 0x14,
PACKET_SPAWN_MOB = 0x18,
PACKET_DESTROY_ENTITIES = 0x1d,
PACKET_CHUNK_DATA = 0x33,
PACKET_BLOCK_CHANGE = 0x34,
PACKET_BLOCK_CHANGE = 0x35,
PACKET_BLOCK_ACTION = 0x36,
} ;
@@ -156,11 +157,11 @@ void cProtocol132::SendBlockChange(int a_BlockX, int a_BlockY, int a_BlockZ, BLO
void cProtocol132::SendChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataSerializer & a_Serializer)
{
{
cCSLock Lock(m_CSPacket);
// Pre-chunk not used in 1.3.2. Finally.
//*
// Send the chunk data:
// Chunk data seems to break the connection for some reason; without it, the connection lives indefinitely
AString Serialized = a_Serializer.Serialize(cChunkDataSerializer::RELEASE_1_3_2);
@@ -169,7 +170,9 @@ void cProtocol132::SendChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataSerialize
WriteInt (a_ChunkZ);
SendData(Serialized.data(), Serialized.size());
Flush();
//*/
}
// Enabling the sleep here sometimes makes the client accept us and spawn us in the world. But it makes the connection lag behind, ultimately timing out
// cSleep::MilliSleep(500);
}
@@ -201,7 +204,7 @@ void cProtocol132::SendKeepAlive(int a_PingID)
void cProtocol132::SendLogin(const cPlayer & a_Player)
void cProtocol132::SendLogin(const cPlayer & a_Player, const cWorld & a_World)
{
cCSLock Lock(m_CSPacket);
WriteByte (PACKET_LOGIN);
@@ -213,6 +216,8 @@ void cProtocol132::SendLogin(const cPlayer & a_Player)
WriteByte (0); // Unused, used to be world height
WriteByte (8); // Client list width or something
Flush();
SendCompass(a_World);
}
@@ -278,7 +283,7 @@ void cProtocol132::SendUnloadChunk(int a_ChunkX, int a_ChunkZ)
int cProtocol132::ParsePacket(unsigned char a_PacketType)
{
// DEBUG:
LOGD("Received packet 0x%02x, current bytecount %d, enc %d", a_PacketType, m_CurrentIn, m_EncIn);
LOGD("Received packet 0x%02x, %d B avail; BM %d, enc %d", a_PacketType, m_ReceivedData.GetReadableSpace(), m_CurrentIn, m_EncIn);
switch (a_PacketType)
{
@@ -327,18 +332,12 @@ int cProtocol132::ParseHandshake(void)
HANDLE_PACKET_READ(ReadBEInt, int, ServerPort);
m_Username = Username;
// Send a 0xFD Encryption Key Request http://wiki.vg/Protocol#0xFD
AString key;
CryptoPP::StringSink sink(key); // GCC won't allow inline instantiation in the following line, damned temporary refs
cRoot::Get()->GetServer()->GetPublicKey().Save(sink);
// Send a 0xFD Encryption Key Request http://wiki.vg/Protocol#0xFD
WriteByte((char)0xfd);
WriteString("MCServer");
WriteShort((short)key.size());
SendData(key.data(), key.size());
WriteShort(4);
WriteInt((int)this); // Using 'this' as the cryptographic nonce, so that we don't have to generate one each time :)
Flush();
SendEncryptionKeyRequest(key);
return PARSE_OK;
}
@@ -440,22 +439,30 @@ void cProtocol132::SendData(const char * a_Data, int a_Size)
void cProtocol132::Flush(void)
{
// DEBUG
ASSERT(m_CSPacket.IsLockedByCurrentThread()); // Did all packets lock the CS properly?
if (m_DataToSend.empty())
{
LOGD("Flushing empty");
return;
}
LOGD("Flushing packet 0x%02x, %d bytes; %d bytes out, %d enc out", (unsigned char)m_DataToSend[0], m_DataToSend.size(), m_CurrentOut, m_EncOut);
LOGD("Flushing packet 0x%02x, %d B; %d B out, %d enc out", (unsigned char)m_DataToSend[0], m_DataToSend.size(), m_CurrentOut, m_EncOut);
const char * a_Data = m_DataToSend.data();
int a_Size = m_DataToSend.size();
if (m_IsEncrypted)
{
m_EncOut += a_Size;
byte Encrypted[4096]; // Larger buffer, we may be sending lots of data (chunks)
byte Encrypted[8192]; // Larger buffer, we may be sending lots of data (chunks)
while (a_Size > 0)
{
int NumBytes = (a_Size > sizeof(Encrypted)) ? sizeof(Encrypted) : a_Size;
m_Encryptor.ProcessData(Encrypted, (byte *)a_Data, NumBytes);
// DEBUG: decrypt the data to check if encryption works:
byte Decrypted[sizeof(Encrypted)];
m_Decryptor2.ProcessData(Decrypted, Encrypted, NumBytes);
ASSERT(memcmp(Decrypted, a_Data, NumBytes) == 0);
super::SendData((const char *)Encrypted, NumBytes);
a_Size -= NumBytes;
a_Data += NumBytes;
@@ -466,7 +473,7 @@ void cProtocol132::Flush(void)
super::SendData(a_Data, a_Size);
}
m_DataToSend.clear();
// cSleep::MilliSleep(300);
// cSleep::MilliSleep(400);
}
@@ -500,6 +507,75 @@ void cProtocol132::WriteItem(const cItem & a_Item)
int cProtocol132::ParseItem(cItem & a_Item)
{
HANDLE_PACKET_READ(ReadBEShort, short, ItemType);
if (ItemType <= -1)
{
a_Item.Empty();
return PARSE_OK;
}
a_Item.m_ItemType = ItemType;
HANDLE_PACKET_READ(ReadChar, char, ItemCount);
HANDLE_PACKET_READ(ReadBEShort, short, ItemDamage);
a_Item.m_ItemCount = ItemCount;
// a_Item.m_ItemDamage = ItemDamage;
if (ItemCount <= 0)
{
a_Item.Empty();
}
HANDLE_PACKET_READ(ReadBEShort, short, EnchantNumBytes);
if (EnchantNumBytes <= 0)
{
return PARSE_OK;
}
// TODO: Enchantment not implemented yet!
if (!m_ReceivedData.SkipRead(EnchantNumBytes))
{
return PARSE_INCOMPLETE;
}
return PARSE_OK;
}
void cProtocol132::SendCompass(const cWorld & a_World)
{
cCSLock Lock(m_CSPacket);
WriteByte(PACKET_COMPASS);
WriteInt((int)(a_World.GetSpawnX()));
WriteInt((int)(a_World.GetSpawnY()));
WriteInt((int)(a_World.GetSpawnZ()));
Flush();
}
void cProtocol132::SendEncryptionKeyRequest(const AString & a_Key)
{
cCSLock Lock(m_CSPacket);
WriteByte((char)0xfd);
WriteString("MCServer");
WriteShort((short)a_Key.size());
SendData(a_Key.data(), a_Key.size());
WriteShort(4);
WriteInt((int)this); // Using 'this' as the cryptographic nonce, so that we don't have to generate one each time :)
Flush();
}
void cProtocol132::HandleEncryptionKeyResponse(const AString & a_EncKey, const AString & a_EncNonce)
{
// Decrypt EncNonce using privkey
@@ -530,11 +606,14 @@ void cProtocol132::HandleEncryptionKeyResponse(const AString & a_EncKey, const A
return;
}
// Send encryption key response:
WriteByte((char)0xfc);
WriteShort(0);
WriteShort(0);
Flush();
{
// Send encryption key response:
cCSLock Lock(m_CSPacket);
WriteByte((char)0xfc);
WriteShort(0);
WriteShort(0);
Flush();
}
StartEncryption(DecryptedKey);
return;
@@ -548,6 +627,7 @@ void cProtocol132::StartEncryption(const byte * a_Key)
{
m_Encryptor.SetKey(a_Key, 16, MakeParameters(Name::IV(), ConstByteArrayParameter(a_Key, 16))(Name::FeedbackSize(), 1));
m_Decryptor.SetKey(a_Key, 16, MakeParameters(Name::IV(), ConstByteArrayParameter(a_Key, 16))(Name::FeedbackSize(), 1));
m_Decryptor2.SetKey(a_Key, 16, MakeParameters(Name::IV(), ConstByteArrayParameter(a_Key, 16))(Name::FeedbackSize(), 1));
m_IsEncrypted = true;
}