From 9cddffb6df595afef1584c92b6d5fc97c9eb162c Mon Sep 17 00:00:00 2001 From: Howaner Date: Mon, 22 Sep 2014 21:18:13 +0200 Subject: Changed metadata reading again. --- src/Protocol/Protocol18x.cpp | 175 ++----------------------------------------- src/Protocol/Protocol18x.h | 5 +- 2 files changed, 7 insertions(+), 173 deletions(-) (limited to 'src') diff --git a/src/Protocol/Protocol18x.cpp b/src/Protocol/Protocol18x.cpp index 07e21923c..fbeb845f8 100644 --- a/src/Protocol/Protocol18x.cpp +++ b/src/Protocol/Protocol18x.cpp @@ -1652,169 +1652,6 @@ void cProtocol180::FixItemFramePositions(int a_ObjectData, double & a_PosX, doub -AString cProtocol180::ReadNBTDataFromBuffer(cByteBuffer & a_ByteBuffer, int a_ListTag) -{ - cByteBuffer BufferCache(64 KiB); - AString Data; - - while (a_ByteBuffer.GetReadableSpace() != 0) - { - unsigned char TypeID; - if (a_ListTag != 0) - { - TypeID = (unsigned char)a_ListTag; - } - else - { - if (!a_ByteBuffer.ReadByte(TypeID)) - { - // Can't read the next byte - break; - } - BufferCache.WriteByte(TypeID); - } - - if ((TypeID <= eTagType::TAG_Min) || (TypeID > eTagType::TAG_Max)) - { - // Bad type id (or TAG_End) - break; - } - eTagType TagType = static_cast(TypeID); - - // Read the following string length: - if (a_ListTag == 0) - { - short StrLength = 0; - if (!a_ByteBuffer.ReadBEShort(StrLength)) - { - // Can't read string length - return Data; - } - BufferCache.WriteBEShort(StrLength); - - // Read string and write to BufferCache: - AString TagTitle; - if (!a_ByteBuffer.ReadString(TagTitle, (size_t)StrLength)) - { - // Can't read string - return Data; - } - BufferCache.WriteBuf(TagTitle.data(), TagTitle.size()); - } - - size_t TagLength = 0; - switch (TagType) - { - case eTagType::TAG_Byte: TagLength = sizeof(Byte); break; - case eTagType::TAG_Short: TagLength = sizeof(short); break; - case eTagType::TAG_Int: TagLength = sizeof(int); break; - case eTagType::TAG_Long: TagLength = sizeof(long); break; - case eTagType::TAG_Float: TagLength = sizeof(float); break; - case eTagType::TAG_Double: TagLength = sizeof(double); break; - case eTagType::TAG_End: break; - case eTagType::TAG_Compound: - { - AString CompoundData = ReadNBTDataFromBuffer(a_ByteBuffer); - Data.append(CompoundData.data(), CompoundData.size()); - break; - } - case eTagType::TAG_List: - { - Byte ListType; - int ListLength; - if (!a_ByteBuffer.ReadByte(ListType) || !a_ByteBuffer.ReadBEInt(ListLength) || (ListLength < 0)) - { - // Bad list type or list length - return Data; - } - LOGWARNING("LIST, Type: %i", (int)ListType); - - BufferCache.WriteByte(ListType); - BufferCache.WriteBEInt(ListLength); - - if ((ListType <= eTagType::TAG_Min) || (ListType > eTagType::TAG_Max)) - { - // Bad tag type - return Data; - } - - for (int i = 0; i < ListLength; i++) - { - AString EntryData = ReadNBTDataFromBuffer(a_ByteBuffer, ListType); - BufferCache.WriteBuf(EntryData.data(), EntryData.size()); - } - break; - } - case eTagType::TAG_String: - { - // Read the following string length: - short StrLength; - if (!a_ByteBuffer.ReadBEShort(StrLength)) - { - // Can't read string length - return Data; - } - BufferCache.WriteBEShort(StrLength); - TagLength += (size_t)StrLength; - break; - } - case eTagType::TAG_ByteArray: - { - int ArrayLength; - if (!a_ByteBuffer.ReadBEInt(ArrayLength) || (ArrayLength < 0) || (ArrayLength >= 16777216)) - { - // Bad array length - return Data; - } - BufferCache.WriteBEInt(ArrayLength); - TagLength += (size_t) ArrayLength; - break; - } - case eTagType::TAG_IntArray: - { - int ArrayLength; - if (!a_ByteBuffer.ReadBEInt(ArrayLength) || (ArrayLength < 0) || (ArrayLength >= 16777216)) - { - // Bad array length - return Data; - } - BufferCache.WriteBEInt(ArrayLength); - TagLength += (size_t)ArrayLength * sizeof(int); - break; - } - } - - // Copy tag bytes to the cache: - AString TagBytes; - if (!a_ByteBuffer.ReadString(TagBytes, TagLength)) - { - break; - } - BufferCache.WriteBuf(TagBytes.data(), TagBytes.size()); - - // Write cache to Data and clean: - AString Bytes; - BufferCache.ReadAll(Bytes); - BufferCache.CommitRead(); - Data.append(Bytes.data(), Bytes.size()); - } - - // Read the rest from cache - if (BufferCache.GetUsedSpace() != 0) - { - AString Bytes; - BufferCache.ReadAll(Bytes); - BufferCache.CommitRead(); - Data.append(Bytes.data(), Bytes.size()); - } - - return Data; -} - - - - - void cProtocol180::AddReceivedData(const char * a_Data, size_t a_Size) { // Write the incoming data into the comm log file: @@ -2254,7 +2091,7 @@ void cProtocol180::HandlePacketBlockPlace(cByteBuffer & a_ByteBuffer) } cItem Item; - ReadItem(a_ByteBuffer, Item); + ReadItem(a_ByteBuffer, Item, a_ByteBuffer.GetReadableSpace() - 3); HANDLE_READ(a_ByteBuffer, ReadByte, Byte, CursorX); HANDLE_READ(a_ByteBuffer, ReadByte, Byte, CursorY); @@ -2328,7 +2165,7 @@ void cProtocol180::HandlePacketCreativeInventoryAction(cByteBuffer & a_ByteBuffe { HANDLE_READ(a_ByteBuffer, ReadBEShort, short, SlotNum); cItem Item; - if (!ReadItem(a_ByteBuffer, Item)) + if (!ReadItem(a_ByteBuffer, Item, a_ByteBuffer.GetReadableSpace())) { return; } @@ -2581,7 +2418,7 @@ void cProtocol180::HandlePacketWindowClick(cByteBuffer & a_ByteBuffer) HANDLE_READ(a_ByteBuffer, ReadBEShort, short, TransactionID); HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Mode); cItem Item; - ReadItem(a_ByteBuffer, Item); + ReadItem(a_ByteBuffer, Item, a_ByteBuffer.GetReadableSpace()); // Convert Button, Mode, SlotNum and HeldItem into eClickAction: eClickAction Action; @@ -2673,7 +2510,7 @@ void cProtocol180::SendData(const char * a_Data, size_t a_Size) -bool cProtocol180::ReadItem(cByteBuffer & a_ByteBuffer, cItem & a_Item) +bool cProtocol180::ReadItem(cByteBuffer & a_ByteBuffer, cItem & a_Item, size_t a_MetadataSize) { HANDLE_PACKET_READ(a_ByteBuffer, ReadBEShort, short, ItemType); if (ItemType == -1) @@ -2693,8 +2530,8 @@ bool cProtocol180::ReadItem(cByteBuffer & a_ByteBuffer, cItem & a_Item) a_Item.Empty(); } - AString Metadata = ReadNBTDataFromBuffer(a_ByteBuffer); - if (Metadata.size() == 0 || (Metadata[0] == 0)) + AString Metadata; + if (!a_ByteBuffer.ReadString(Metadata, a_MetadataSize) || (Metadata.size() == 0) || (Metadata[0] == 0)) { // No metadata return true; diff --git a/src/Protocol/Protocol18x.h b/src/Protocol/Protocol18x.h index 2275f6298..59a5dd0b6 100644 --- a/src/Protocol/Protocol18x.h +++ b/src/Protocol/Protocol18x.h @@ -269,9 +269,6 @@ protected: /** The dimension that was last sent to a player in a Respawn or Login packet. Used to avoid Respawning into the same dimension, which confuses the client. */ eDimension m_LastSentDimension; - - /** Read a nbt data from the buffer. (It's needed because the 1.8 protocol doesn't send the nbt length) */ - AString ReadNBTDataFromBuffer(cByteBuffer & a_ByteBuffer, int a_ListTag = 0); /** Adds the received (unencrypted) data to m_ReceivedData, parses complete packets */ @@ -325,7 +322,7 @@ protected: void SendCompass(const cWorld & a_World); /** Reads an item out of the received data, sets a_Item to the values read. Returns false if not enough received data */ - virtual bool ReadItem(cByteBuffer & a_ByteBuffer, cItem & a_Item); + virtual bool ReadItem(cByteBuffer & a_ByteBuffer, cItem & a_Item, size_t a_MetadataSize = 1); /** Parses item metadata as read by ReadItem(), into the item enchantments. */ void ParseItemMetadata(cItem & a_Item, const AString & a_Metadata); -- cgit v1.2.3