summaryrefslogtreecommitdiffstats
path: root/src/Protocol/ProtocolRecognizer.cpp
diff options
context:
space:
mode:
authorworktycho <work.tycho@gmail.com>2013-12-09 18:51:12 +0100
committerworktycho <work.tycho@gmail.com>2013-12-09 18:51:12 +0100
commit843605d59ebc128be0a578dc6f45ef8c05da6e79 (patch)
tree3ffebc6ba27baf7a9e1d4bc51501ffeea9b14226 /src/Protocol/ProtocolRecognizer.cpp
parentmerged makefile changes (diff)
parentFix Undefined behavior at Bindings/LuaWindow line 32 (diff)
downloadcuberite-843605d59ebc128be0a578dc6f45ef8c05da6e79.tar
cuberite-843605d59ebc128be0a578dc6f45ef8c05da6e79.tar.gz
cuberite-843605d59ebc128be0a578dc6f45ef8c05da6e79.tar.bz2
cuberite-843605d59ebc128be0a578dc6f45ef8c05da6e79.tar.lz
cuberite-843605d59ebc128be0a578dc6f45ef8c05da6e79.tar.xz
cuberite-843605d59ebc128be0a578dc6f45ef8c05da6e79.tar.zst
cuberite-843605d59ebc128be0a578dc6f45ef8c05da6e79.zip
Diffstat (limited to 'src/Protocol/ProtocolRecognizer.cpp')
-rw-r--r--src/Protocol/ProtocolRecognizer.cpp925
1 files changed, 925 insertions, 0 deletions
diff --git a/src/Protocol/ProtocolRecognizer.cpp b/src/Protocol/ProtocolRecognizer.cpp
new file mode 100644
index 000000000..683700d37
--- /dev/null
+++ b/src/Protocol/ProtocolRecognizer.cpp
@@ -0,0 +1,925 @@
+
+// ProtocolRecognizer.cpp
+
+// Implements the cProtocolRecognizer class representing the meta-protocol that recognizes possibly multiple
+// protocol versions and redirects everything to them
+
+#include "Globals.h"
+
+#include "ProtocolRecognizer.h"
+#include "Protocol125.h"
+#include "Protocol132.h"
+#include "Protocol14x.h"
+#include "Protocol15x.h"
+#include "Protocol16x.h"
+#include "Protocol17x.h"
+#include "../ClientHandle.h"
+#include "../Root.h"
+#include "../Server.h"
+#include "../World.h"
+#include "../ChatColor.h"
+
+
+
+
+
+cProtocolRecognizer::cProtocolRecognizer(cClientHandle * a_Client) :
+ super(a_Client),
+ m_Protocol(NULL),
+ m_Buffer(512)
+{
+}
+
+
+
+
+
+cProtocolRecognizer::~cProtocolRecognizer()
+{
+ delete m_Protocol;
+}
+
+
+
+
+
+AString cProtocolRecognizer::GetVersionTextFromInt(int a_ProtocolVersion)
+{
+ switch (a_ProtocolVersion)
+ {
+ case PROTO_VERSION_1_2_5: return "1.2.5";
+ case PROTO_VERSION_1_3_2: return "1.3.2";
+ case PROTO_VERSION_1_4_2: return "1.4.2";
+ case PROTO_VERSION_1_4_4: return "1.4.4";
+ case PROTO_VERSION_1_4_6: return "1.4.6";
+ case PROTO_VERSION_1_5_0: return "1.5";
+ case PROTO_VERSION_1_5_2: return "1.5.2";
+ case PROTO_VERSION_1_6_1: return "1.6.1";
+ case PROTO_VERSION_1_6_2: return "1.6.2";
+ case PROTO_VERSION_1_6_3: return "1.6.3";
+ case PROTO_VERSION_1_6_4: return "1.6.4";
+ case PROTO_VERSION_1_7_2: return "1.7.2";
+ }
+ ASSERT(!"Unknown protocol version");
+ return Printf("Unknown protocol (%d)", a_ProtocolVersion);
+}
+
+
+
+
+
+void cProtocolRecognizer::DataReceived(const char * a_Data, int a_Size)
+{
+ if (m_Protocol == NULL)
+ {
+ if (!m_Buffer.Write(a_Data, a_Size))
+ {
+ m_Client->Kick("Unsupported protocol version");
+ return;
+ }
+
+ if (!TryRecognizeProtocol())
+ {
+ return;
+ }
+
+ // The protocol has just been recognized, dump the whole m_Buffer contents into it for parsing:
+ AString Dump;
+ m_Buffer.ResetRead();
+ m_Buffer.ReadAll(Dump);
+ m_Protocol->DataReceived(Dump.data(), Dump.size());
+ }
+ else
+ {
+ m_Protocol->DataReceived(a_Data, a_Size);
+ }
+}
+
+
+
+
+
+void cProtocolRecognizer::SendAttachEntity(const cEntity & a_Entity, const cEntity * a_Vehicle)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendAttachEntity(a_Entity, a_Vehicle);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendBlockAction(a_BlockX, a_BlockY, a_BlockZ, a_Byte1, a_Byte2, a_BlockType);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendBlockBreakAnim(int a_entityID, int a_BlockX, int a_BlockY, int a_BlockZ, char stage)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendBlockBreakAnim(a_entityID, a_BlockX, a_BlockY, a_BlockZ, stage);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendBlockChange(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendBlockChange(a_BlockX, a_BlockY, a_BlockZ, a_BlockType, a_BlockMeta);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendBlockChanges(int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendBlockChanges(a_ChunkX, a_ChunkZ, a_Changes);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendChat(const AString & a_Message)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendChat(a_Message);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataSerializer & a_Serializer)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendChunkData(a_ChunkX, a_ChunkZ, a_Serializer);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendCollectPickup(const cPickup & a_Pickup, const cPlayer & a_Player)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendCollectPickup(a_Pickup, a_Player);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendDestroyEntity(const cEntity & a_Entity)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendDestroyEntity(a_Entity);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendDisconnect(const AString & a_Reason)
+{
+ if (m_Protocol != NULL)
+ {
+ m_Protocol->SendDisconnect(a_Reason);
+ }
+ else
+ {
+ // This is used when the client sends a server-ping, respond with the default packet:
+ WriteByte ((char)0xff); // PACKET_DISCONNECT
+ WriteString(a_Reason);
+ }
+}
+
+
+
+
+void cProtocolRecognizer::SendEditSign(int a_BlockX, int a_BlockY, int a_BlockZ)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendEditSign(a_BlockX, a_BlockY, a_BlockZ);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendEntityEquipment(const cEntity & a_Entity, short a_SlotNum, const cItem & a_Item)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendEntityEquipment(a_Entity, a_SlotNum, a_Item);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendEntityHeadLook(const cEntity & a_Entity)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendEntityHeadLook(a_Entity);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendEntityLook(const cEntity & a_Entity)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendEntityLook(a_Entity);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendEntityMetadata(const cEntity & a_Entity)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendEntityMetadata(a_Entity);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendEntityProperties(const cEntity & a_Entity)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendEntityProperties(a_Entity);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendEntityRelMove(const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendEntityRelMove(a_Entity, a_RelX, a_RelY, a_RelZ);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendEntityRelMoveLook(const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendEntityRelMoveLook(a_Entity, a_RelX, a_RelY, a_RelZ);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendEntityStatus(const cEntity & a_Entity, char a_Status)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendEntityStatus(a_Entity, a_Status);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendEntityVelocity(const cEntity & a_Entity)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendEntityVelocity(a_Entity);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendExplosion(double a_BlockX, double a_BlockY, double a_BlockZ, float a_Radius, const cVector3iArray & a_BlocksAffected, const Vector3d & a_PlayerMotion)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendExplosion(a_BlockX,a_BlockY,a_BlockZ,a_Radius, a_BlocksAffected, a_PlayerMotion);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendGameMode(eGameMode a_GameMode)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendGameMode(a_GameMode);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendHealth(void)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendHealth();
+}
+
+
+
+
+
+void cProtocolRecognizer::SendWindowProperty(const cWindow & a_Window, short a_Property, short a_Value)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendWindowProperty(a_Window, a_Property, a_Value);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendInventorySlot(char a_WindowID, short a_SlotNum, const cItem & a_Item)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendInventorySlot(a_WindowID, a_SlotNum, a_Item);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendKeepAlive(int a_PingID)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendKeepAlive(a_PingID);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendLogin(const cPlayer & a_Player, const cWorld & a_World)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendLogin(a_Player, a_World);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendPickupSpawn(const cPickup & a_Pickup)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendPickupSpawn(a_Pickup);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendPlayerAbilities(void)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendPlayerAbilities();
+}
+
+
+
+
+
+void cProtocolRecognizer::SendEntityAnimation(const cEntity & a_Entity, char a_Animation)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendEntityAnimation(a_Entity, a_Animation);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendPlayerListItem(const cPlayer & a_Player, bool a_IsOnline)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendPlayerListItem(a_Player, a_IsOnline);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendPlayerMaxSpeed(void)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendPlayerMaxSpeed();
+}
+
+
+
+
+
+void cProtocolRecognizer::SendPlayerMoveLook(void)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendPlayerMoveLook();
+}
+
+
+
+
+
+void cProtocolRecognizer::SendPlayerPosition(void)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendPlayerPosition();
+}
+
+
+
+
+
+void cProtocolRecognizer::SendPlayerSpawn(const cPlayer & a_Player)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendPlayerSpawn(a_Player);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendRespawn(void)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendRespawn();
+}
+
+
+
+
+
+void cProtocolRecognizer::SendExperience(void)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendExperience();
+}
+
+
+
+
+
+void cProtocolRecognizer::SendExperienceOrb(const cExpOrb & a_ExpOrb)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendExperienceOrb(a_ExpOrb);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendSoundEffect(const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendSoundEffect(a_SoundName, a_SrcX, a_SrcY, a_SrcZ, a_Volume, a_Pitch);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendSoundParticleEffect(int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendSoundParticleEffect(a_EffectID, a_SrcX, a_SrcY, a_SrcZ, a_Data);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendSpawnFallingBlock(const cFallingBlock & a_FallingBlock)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendSpawnFallingBlock(a_FallingBlock);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendSpawnMob(const cMonster & a_Mob)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendSpawnMob(a_Mob);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendSpawnObject(const cEntity & a_Entity, char a_ObjectType, int a_ObjectData, Byte a_Yaw, Byte a_Pitch)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendSpawnObject(a_Entity, a_ObjectType, a_ObjectData, a_Yaw, a_Pitch);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendSpawnVehicle(const cEntity & a_Vehicle, char a_VehicleType, char a_VehicleSubType)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendSpawnVehicle(a_Vehicle, a_VehicleType, a_VehicleSubType);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendTabCompletionResults(const AStringVector & a_Results)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendTabCompletionResults(a_Results);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendTeleportEntity(const cEntity & a_Entity)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendTeleportEntity(a_Entity);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendThunderbolt(int a_BlockX, int a_BlockY, int a_BlockZ)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendThunderbolt(a_BlockX, a_BlockY, a_BlockZ);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendTimeUpdate(Int64 a_WorldAge, Int64 a_TimeOfDay)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendTimeUpdate(a_WorldAge, a_TimeOfDay);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendUnloadChunk(int a_ChunkX, int a_ChunkZ)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendUnloadChunk(a_ChunkX, a_ChunkZ);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendUpdateSign(int a_BlockX, int a_BlockY, int a_BlockZ, const AString & a_Line1, const AString & a_Line2, const AString & a_Line3, const AString & a_Line4)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendUpdateSign(a_BlockX, a_BlockY, a_BlockZ, a_Line1, a_Line2, a_Line3, a_Line4);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendUseBed(const cEntity & a_Entity, int a_BlockX, int a_BlockY, int a_BlockZ )
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendUseBed(a_Entity, a_BlockX, a_BlockY, a_BlockZ);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendWeather(eWeather a_Weather)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendWeather(a_Weather);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendWholeInventory(const cWindow & a_Window)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendWholeInventory(a_Window);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendWindowClose(const cWindow & a_Window)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendWindowClose(a_Window);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendWindowOpen(const cWindow & a_Window)
+{
+ ASSERT(m_Protocol != NULL);
+ m_Protocol->SendWindowOpen(a_Window);
+}
+
+
+
+
+
+AString cProtocolRecognizer::GetAuthServerID(void)
+{
+ ASSERT(m_Protocol != NULL);
+ return m_Protocol->GetAuthServerID();
+}
+
+
+
+
+
+void cProtocolRecognizer::SendData(const char * a_Data, int a_Size)
+{
+ // This is used only when handling the server ping
+ m_Client->SendData(a_Data, a_Size);
+}
+
+
+
+
+
+bool cProtocolRecognizer::TryRecognizeProtocol(void)
+{
+ // NOTE: If a new protocol is added or an old one is removed, adjust MCS_CLIENT_VERSIONS and
+ // MCS_PROTOCOL_VERSIONS macros in the header file, as well as PROTO_VERSION_LATEST macro
+
+ // The first packet should be a Handshake, 0x02:
+ unsigned char PacketType;
+ if (!m_Buffer.ReadByte(PacketType))
+ {
+ return false;
+ }
+ switch (PacketType)
+ {
+ case 0x02: return TryRecognizeLengthlessProtocol(); // Handshake, continue recognizing
+ case 0xfe:
+ {
+ // This may be either a packet length or the length-less Ping packet
+ Byte NextByte;
+ if (!m_Buffer.ReadByte(NextByte))
+ {
+ // Not enough data for either protocol
+ // This could actually happen with the 1.2 / 1.3 client, but their support is fading out anyway
+ return false;
+ }
+ if (NextByte != 0x01)
+ {
+ // This is definitely NOT a length-less Ping packet, handle as lengthed protocol:
+ break;
+ }
+ if (!m_Buffer.ReadByte(NextByte))
+ {
+ // There is no more data. Although this *could* mean TCP fragmentation, it is highly unlikely
+ // and rather this is a 1.4 client sending a regular Ping packet (without the following Plugin message)
+ SendLengthlessServerPing();
+ return false;
+ }
+ if (NextByte == 0xfa)
+ {
+ // Definitely a length-less Ping followed by a Plugin message
+ SendLengthlessServerPing();
+ return false;
+ }
+ // Definitely a lengthed Initial handshake, handle below:
+ break;
+ }
+ } // switch (PacketType)
+
+ // This must be a lengthed protocol, try if it has the entire initial handshake packet:
+ m_Buffer.ResetRead();
+ UInt32 PacketLen;
+ UInt32 ReadSoFar = m_Buffer.GetReadableSpace();
+ if (!m_Buffer.ReadVarInt(PacketLen))
+ {
+ // Not enough bytes for the packet length, keep waiting
+ return false;
+ }
+ ReadSoFar -= m_Buffer.GetReadableSpace();
+ if (!m_Buffer.CanReadBytes(PacketLen))
+ {
+ // Not enough bytes for the packet, keep waiting
+ return false;
+ }
+ return TryRecognizeLengthedProtocol(PacketLen - ReadSoFar);
+}
+
+
+
+
+
+bool cProtocolRecognizer::TryRecognizeLengthlessProtocol(void)
+{
+ // The comm started with 0x02, which is a Handshake packet in the length-less protocol family
+ // 1.3.2 starts with 0x02 0x39 <name-length-short>
+ // 1.2.5 starts with 0x02 <name-length-short> and name is expected to less than 0x3900 long :)
+ char ch;
+ if (!m_Buffer.ReadChar(ch))
+ {
+ return false;
+ }
+ switch (ch)
+ {
+ case PROTO_VERSION_1_3_2:
+ {
+ m_Protocol = new cProtocol132(m_Client);
+ return true;
+ }
+ case PROTO_VERSION_1_4_2:
+ case PROTO_VERSION_1_4_4:
+ {
+ m_Protocol = new cProtocol142(m_Client);
+ return true;
+ }
+ case PROTO_VERSION_1_4_6:
+ {
+ m_Protocol = new cProtocol146(m_Client);
+ return true;
+ }
+ case PROTO_VERSION_1_5_0:
+ case PROTO_VERSION_1_5_2:
+ {
+ m_Protocol = new cProtocol150(m_Client);
+ return true;
+ }
+ case PROTO_VERSION_1_6_1:
+ {
+ m_Protocol = new cProtocol161(m_Client);
+ return true;
+ }
+ case PROTO_VERSION_1_6_2:
+ case PROTO_VERSION_1_6_3:
+ case PROTO_VERSION_1_6_4:
+ {
+ m_Protocol = new cProtocol162(m_Client);
+ return true;
+ }
+ }
+ m_Protocol = new cProtocol125(m_Client);
+ return true;
+}
+
+
+
+
+
+bool cProtocolRecognizer::TryRecognizeLengthedProtocol(UInt32 a_PacketLengthRemaining)
+{
+ UInt32 PacketType;
+ UInt32 NumBytesRead = m_Buffer.GetReadableSpace();
+ if (!m_Buffer.ReadVarInt(PacketType))
+ {
+ return false;
+ }
+ if (PacketType != 0x00)
+ {
+ // Not an initial handshake packet, we don't know how to talk to them
+ LOGINFO("Client \"%s\" uses an unsupported protocol (lengthed, initial packet %u)",
+ m_Client->GetIPString().c_str(), PacketType
+ );
+ m_Client->Kick("Unsupported protocol version");
+ return false;
+ }
+ UInt32 ProtocolVersion;
+ if (!m_Buffer.ReadVarInt(ProtocolVersion))
+ {
+ return false;
+ }
+ NumBytesRead -= m_Buffer.GetReadableSpace();
+ switch (ProtocolVersion)
+ {
+ case PROTO_VERSION_1_7_2:
+ {
+ AString ServerAddress;
+ short ServerPort;
+ UInt32 NextState;
+ m_Buffer.ReadVarUTF8String(ServerAddress);
+ m_Buffer.ReadBEShort(ServerPort);
+ m_Buffer.ReadVarInt(NextState);
+ m_Buffer.CommitRead();
+ m_Protocol = new cProtocol172(m_Client, ServerAddress, ServerPort, NextState);
+ return true;
+ }
+ }
+ LOGINFO("Client \"%s\" uses an unsupported protocol (lengthed, version %u)",
+ m_Client->GetIPString().c_str(), ProtocolVersion
+ );
+ m_Client->Kick("Unsupported protocol version");
+ return false;
+}
+
+
+
+
+
+void cProtocolRecognizer::SendLengthlessServerPing(void)
+{
+ AString Reply;
+ switch (cRoot::Get()->GetPrimaryServerVersion())
+ {
+ case PROTO_VERSION_1_2_5:
+ case PROTO_VERSION_1_3_2:
+ {
+ // http://wiki.vg/wiki/index.php?title=Protocol&oldid=3099#Server_List_Ping_.280xFE.29
+ Printf(Reply, "%s%s%i%s%i",
+ cRoot::Get()->GetServer()->GetDescription().c_str(),
+ cChatColor::Delimiter.c_str(),
+ cRoot::Get()->GetServer()->GetNumPlayers(),
+ cChatColor::Delimiter.c_str(),
+ cRoot::Get()->GetServer()->GetMaxPlayers()
+ );
+ break;
+ }
+
+ case PROTO_VERSION_1_4_2:
+ case PROTO_VERSION_1_4_4:
+ case PROTO_VERSION_1_4_6:
+ case PROTO_VERSION_1_5_0:
+ case PROTO_VERSION_1_5_2:
+ case PROTO_VERSION_1_6_1:
+ case PROTO_VERSION_1_6_2:
+ case PROTO_VERSION_1_6_3:
+ case PROTO_VERSION_1_6_4:
+ {
+ // The server list ping now has 1 more byte of "magic". Mojang just loves to complicate stuff.
+ // http://wiki.vg/wiki/index.php?title=Protocol&oldid=3101#Server_List_Ping_.280xFE.29
+ // _X 2012_10_31: I know that this needn't eat the byte, since it still may be in transit.
+ // Who cares? We're disconnecting anyway.
+ m_Buffer.ResetRead();
+ if (m_Buffer.CanReadBytes(2))
+ {
+ byte val;
+ m_Buffer.ReadByte(val); // Packet type - Serverlist ping
+ m_Buffer.ReadByte(val); // 0x01 magic value
+ ASSERT(val == 0x01);
+ }
+
+ // http://wiki.vg/wiki/index.php?title=Server_List_Ping&oldid=3100
+ AString NumPlayers;
+ Printf(NumPlayers, "%d", cRoot::Get()->GetServer()->GetNumPlayers());
+ AString MaxPlayers;
+ Printf(MaxPlayers, "%d", cRoot::Get()->GetServer()->GetMaxPlayers());
+
+ AString ProtocolVersionNum;
+ Printf(ProtocolVersionNum, "%d", cRoot::Get()->GetPrimaryServerVersion());
+ AString ProtocolVersionTxt(GetVersionTextFromInt(cRoot::Get()->GetPrimaryServerVersion()));
+
+ // Cannot use Printf() because of in-string NUL bytes.
+ Reply = cChatColor::Delimiter;
+ Reply.append("1");
+ Reply.push_back(0);
+ Reply.append(ProtocolVersionNum);
+ Reply.push_back(0);
+ Reply.append(ProtocolVersionTxt);
+ Reply.push_back(0);
+ Reply.append(cRoot::Get()->GetServer()->GetDescription());
+ Reply.push_back(0);
+ Reply.append(NumPlayers);
+ Reply.push_back(0);
+ Reply.append(MaxPlayers);
+ break;
+ }
+ } // switch (m_PrimaryServerVersion)
+ m_Client->Kick(Reply);
+}
+
+
+
+