Examples with NettyInputWrapper com.github.dirtpowered.dirtmv.data.protocol.io.NettyInputWrapper used on opensource projects

Example 1 with NettyInputWrapper

use of com.github.dirtpowered.dirtmv.data.protocol.io.NettyInputWrapper in project DirtMultiversion by DirtPowered.

the class PacketDecoder method decode.

@Override
protected void decode(ChannelHandlerContext context, ByteBuf buffer, List<Object> list) throws IOException {
    boolean flag = packetDirection == PacketDirection.TO_CLIENT;
    setUserProtocol(flag, buffer);
    PacketInput inputBuffer = new NettyInputWrapper(buffer);
    PacketData packet = PacketUtil.readPacket(flag ? main.getConfiguration().getServerVersion() : userData.getClientVersion(), inputBuffer);
    setProtocolState(packet);
    list.add(packet);
}

Example 2 with NettyInputWrapper

use of com.github.dirtpowered.dirtmv.data.protocol.io.NettyInputWrapper in project DirtMultiversion by DirtPowered.

the class NettyPacketDecoder method decode.

@Override
protected void decode(ChannelHandlerContext channelHandlerContext, ByteBuf byteBuf, List<Object> list) throws Exception {
    if (byteBuf.readableBytes() == 0)
        return;
    PacketInput inputBuffer = new NettyInputWrapper(byteBuf);
    int i = inputBuffer.readVarInt();
    boolean flag = packetDirection == PacketDirection.TO_CLIENT;
    ProtocolState protocolState = userData.getProtocolState();
    if (protocolState == ProtocolState.HANDSHAKE) {
        int readerIndex = byteBuf.readerIndex();
        int protocol = inputBuffer.readVarInt();
        byteBuf.readerIndex(readerIndex);
        userData.setClientVersion(MinecraftVersion.fromNettyProtocolId(protocol));
    }
    PacketData packet;
    if (flag) {
        packet = readModernPacket(main.getConfiguration().getServerVersion(), protocolState, inputBuffer, packetDirection, i);
    } else {
        packet = readModernPacket(userData.getClientVersion(), protocolState, inputBuffer, packetDirection, i);
    }
    int readableBytes = byteBuf.readableBytes();
    if (readableBytes > 0) {
        byteBuf.skipBytes(readableBytes);
        Logger.warn("skipping {} bytes for packet id: {}, direction: {}", readableBytes, i, packetDirection);
    } else {
        list.add(packet);
    }
}

Example 3 with NettyInputWrapper

use of com.github.dirtpowered.dirtmv.data.protocol.io.NettyInputWrapper in project DirtMultiversion by DirtPowered.

the class ProtocolRelease47To5 method registerTranslators.

@Override
public void registerTranslators() {
    // status ping
    addTranslator(0x00, ProtocolState.STATUS, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            String json = data.read(Type.V1_7_STRING, 0);
            ServerPing serverPing = DirtMultiVersion.GSON.fromJson(json, ServerPing.class);
            ServerPing.Version versionObj = new ServerPing.Version();
            versionObj.setName("1.8.x");
            versionObj.setProtocol(47);
            serverPing.setVersion(versionObj);
            return PacketUtil.createPacket(0x00, new TypeHolder[] { set(Type.V1_7_STRING, serverPing.toString()) });
        }
    });
    // keep alive
    addTranslator(0x00, ProtocolState.PLAY, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            return PacketUtil.createPacket(0x00, new TypeHolder[] { set(Type.VAR_INT, data.read(Type.INT, 0)) });
        }
    });
    // join game
    addTranslator(0x01, ProtocolState.PLAY, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            return PacketUtil.createPacket(0x01, new TypeHolder[] { data.read(0), data.read(1), data.read(2), data.read(3), data.read(4), data.read(5), set(Type.BOOLEAN, false) });
        }
    });
    // login success
    addTranslator(0x02, ProtocolState.LOGIN, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @SneakyThrows
        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            String username = data.read(Type.STRING, 1);
            // block connection thread until profile is fetched
            UUID uuid = GameProfileFetcher.getProfile(username).get().getId();
            String uniqueId = uuid.toString();
            session.getUserData().setUniqueId(uuid);
            // set compression
            enableCompression(session);
            return PacketUtil.createPacket(0x02, new TypeHolder[] { set(Type.V1_7_STRING, uniqueId), set(Type.V1_7_STRING, username) });
        }
    });
    // spawn position
    addTranslator(0x05, ProtocolState.PLAY, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            int x = data.read(Type.INT, 0);
            int y = data.read(Type.INT, 1);
            int z = data.read(Type.INT, 2);
            return PacketUtil.createPacket(0x05, new TypeHolder[] { set(Type.LONG, toBlockPosition(x, y, z)) });
        }
    });
    // update health
    addTranslator(0x06, ProtocolState.PLAY, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            return PacketUtil.createPacket(0x06, new TypeHolder[] { data.read(0), set(Type.VAR_INT, (int) data.read(Type.SHORT, 1)), data.read(2) });
        }
    });
    // chat
    addTranslator(0x02, ProtocolState.PLAY, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            return PacketUtil.createPacket(0x02, new TypeHolder[] { data.read(0), set(Type.BYTE, (byte) 0) });
        }
    });
    // chunk data
    addTranslator(0x21, ProtocolState.PLAY, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            V1_2Chunk chunk = data.read(Type.V1_3_CHUNK, 0);
            int chunkX = chunk.getChunkX();
            int chunkZ = chunk.getChunkZ();
            short bitmap = chunk.getPrimaryBitmap();
            boolean groundUp = chunk.isGroundUp();
            if (groundUp && bitmap == 0) {
                V1_8Chunk emptyChunk = new V1_8Chunk(chunkX, chunkZ, true, bitmap, new byte[0]);
                ProtocolStorage storage = session.getStorage();
                PortalFrameCache portalFrameCache = storage.get(PortalFrameCache.class);
                portalFrameCache.removeChunk(chunkX, chunkZ);
                return PacketUtil.createPacket(0x21, new TypeHolder[] { new TypeHolder<>(Type.V1_8R_CHUNK, emptyChunk) });
            }
            V1_3ToV1_8ChunkTranslator chunkTransformer;
            if (chunk.getStorage() != null) {
                // use existing chunk storage (pre 1.2 servers)
                chunkTransformer = new V1_3ToV1_8ChunkTranslator(session, chunk.getStorage(), groundUp, bitmap);
            } else {
                ProtocolStorage storage = session.getStorage();
                boolean skyLight = true;
                if (storage.hasObject(DimensionTracker.class)) {
                    DimensionTracker tracker = storage.get(DimensionTracker.class);
                    skyLight = tracker.getDimension() == 0;
                }
                chunkTransformer = new V1_3ToV1_8ChunkTranslator(session, chunk.getUncompressedData(), bitmap, skyLight, groundUp);
            }
            V1_8Chunk newChunk = new V1_8Chunk(chunkX, chunkZ, groundUp, bitmap, chunkTransformer.getChunkData());
            return PacketUtil.createPacket(0x21, new TypeHolder[] { new TypeHolder<>(Type.V1_8R_CHUNK, newChunk) });
        }
    });
    // chunk bulk
    addTranslator(0x26, ProtocolState.PLAY, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            V1_3_4ChunkBulk oldChunkBulk = data.read(Type.V1_4CHUNK_BULK, 0);
            int[] x = oldChunkBulk.getColumnX();
            int[] z = oldChunkBulk.getColumnZ();
            int columnAmount = oldChunkBulk.getChunks().length;
            V1_3ToV1_8ChunkTranslator[] bulks = new V1_3ToV1_8ChunkTranslator[columnAmount];
            for (int i = 0; i < columnAmount; i++) {
                bulks[i] = new V1_3ToV1_8ChunkTranslator(session, oldChunkBulk.getChunks()[i], oldChunkBulk.getPrimaryBitmaps()[i], oldChunkBulk.isSkylight(), true);
            }
            V1_8ChunkBulk.Chunk[] chunks = new V1_8ChunkBulk.Chunk[columnAmount];
            for (int i = 0; i < columnAmount; i++) {
                chunks[i] = new V1_8ChunkBulk.Chunk();
                chunks[i].setData(bulks[i].getChunkData());
                chunks[i].setDataSize(oldChunkBulk.getPrimaryBitmaps()[i]);
            }
            V1_8ChunkBulk chunkBulk = new V1_8ChunkBulk(oldChunkBulk.isSkylight(), x, z, chunks);
            return PacketUtil.createPacket(0x26, new TypeHolder[] { set(Type.V1_8R_CHUNK_BULK, chunkBulk) });
        }
    });
    // multi block change
    addTranslator(0x22, ProtocolState.PLAY, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            V1_2MultiBlockArray blockArray = data.read(Type.V1_2MULTIBLOCK_ARRAY, 2);
            DataInput dis = new DataInputStream(new ByteArrayInputStream(blockArray.getData()));
            BlockChangeRecord[] blockChangeRecords = new BlockChangeRecord[blockArray.getRecordCount()];
            for (int i = 0; i < blockArray.getRecordCount(); i++) {
                try {
                    short pos = dis.readShort();
                    short packedBlock = dis.readShort();
                    int blockId = packedBlock >> 4;
                    int blockData = packedBlock & 15;
                    if (DataFixers.shouldCache(blockId)) {
                        ProtocolStorage storage = session.getStorage();
                        PortalFrameCache portalFrameCache = storage.get(PortalFrameCache.class);
                        int x = pos >> 12 & 15;
                        int y = pos & 255;
                        int z = pos >> 8 & 15;
                        int chunkX = data.read(Type.INT, 0);
                        int chunkZ = data.read(Type.INT, 1);
                        int xPos = x + (chunkX << 4);
                        int zPos = z + (chunkZ << 4);
                        portalFrameCache.setBlockAt(chunkX, chunkZ, xPos, y, zPos, blockId);
                        blockData = DataFixers.getCorrectedDataFor(portalFrameCache, xPos, y, zPos, blockId, blockData);
                    } else {
                        blockData = DataFixers.fixInvalidData(blockId, blockData);
                    }
                    blockChangeRecords[i] = new BlockChangeRecord(pos, (short) (blockId & 4095) << 4 | blockData & 15);
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return PacketUtil.createPacket(0x22, new TypeHolder[] { data.read(0), data.read(1), set(Type.V1_8R_MULTIBLOCK_ARRAY, blockChangeRecords) });
        }
    });
    // block change
    addTranslator(0x23, ProtocolState.PLAY, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            int x = data.read(Type.INT, 0);
            short y = data.read(Type.UNSIGNED_BYTE, 1);
            int z = data.read(Type.INT, 2);
            int blockId = data.read(Type.VAR_INT, 3);
            int blockData = data.read(Type.UNSIGNED_BYTE, 4);
            if (DataFixers.shouldCache(blockId)) {
                ProtocolStorage storage = session.getStorage();
                PortalFrameCache portalFrameCache = storage.get(PortalFrameCache.class);
                portalFrameCache.setBlockAt(x >> 4, z >> 4, x, y, z, blockId);
                blockData = DataFixers.getCorrectedDataFor(portalFrameCache, x, y, z, blockId, blockData);
            } else {
                blockData = DataFixers.fixInvalidData(blockId, blockData);
            }
            return PacketUtil.createPacket(0x23, new TypeHolder[] { set(Type.LONG, toBlockPosition(x, y, z)), set(Type.VAR_INT, blockId << 4 | blockData & 15) });
        }
    });
    // block action
    addTranslator(0x24, ProtocolState.PLAY, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            int x = data.read(Type.INT, 0);
            short y = data.read(Type.SHORT, 1);
            int z = data.read(Type.INT, 2);
            return PacketUtil.createPacket(0x24, new TypeHolder[] { set(Type.LONG, toBlockPosition(x, y, z)), data.read(3), data.read(4), data.read(5) });
        }
    });
    // block break animation
    addTranslator(0x25, ProtocolState.PLAY, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            int x = data.read(Type.INT, 1);
            int y = data.read(Type.INT, 2);
            int z = data.read(Type.INT, 3);
            return PacketUtil.createPacket(0x25, new TypeHolder[] { data.read(0), set(Type.LONG, toBlockPosition(x, y, z)), data.read(4) });
        }
    });
    // effect
    addTranslator(0x28, ProtocolState.PLAY, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            int x = data.read(Type.INT, 1);
            byte y = data.read(Type.BYTE, 2);
            int z = data.read(Type.INT, 3);
            int effectType = data.read(Type.INT, 0);
            if (effectType == 2006) {
                double dist = Math.min(0.2F + data.read(Type.INT, 4) / 15.0F, 10.0F);
                if (dist > 2.5D) {
                    dist = 2.5D;
                }
                int i = (int) (150.0D * dist);
                return PacketUtil.createPacket(0x2A, new TypeHolder[] { set(Type.INT, 38), set(Type.BOOLEAN, false), set(Type.FLOAT, (float) x + 0.5f), set(Type.FLOAT, (float) y + 1.0f), set(Type.FLOAT, (float) z + 0.5f), set(Type.FLOAT, 0f), set(Type.FLOAT, 0f), set(Type.FLOAT, 0f), set(Type.FLOAT, 0.15000000596046448f), set(Type.INT, i), // stone
                set(Type.VAR_INT, 1) });
            }
            return PacketUtil.createPacket(0x28, new TypeHolder[] { data.read(0), set(Type.LONG, toBlockPosition(x, y, z)), data.read(4), data.read(5) });
        }
    });
    // update sign
    addTranslator(0x33, ProtocolState.PLAY, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            int x = data.read(Type.INT, 0);
            short y = data.read(Type.SHORT, 1);
            int z = data.read(Type.INT, 2);
            String[] lines = new String[4];
            for (int i = 0; i < 4; i++) {
                lines[i] = ChatUtils.legacyToJsonString(data.read(Type.V1_7_STRING, 3 + i));
            }
            return PacketUtil.createPacket(0x33, new TypeHolder[] { set(Type.LONG, toBlockPosition(x, y, z)), set(Type.V1_7_STRING, lines[0]), set(Type.V1_7_STRING, lines[1]), set(Type.V1_7_STRING, lines[2]), set(Type.V1_7_STRING, lines[3]) });
        }
    });
    // sign editor
    addTranslator(0x36, ProtocolState.PLAY, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            int x = data.read(Type.INT, 0);
            int y = data.read(Type.INT, 1);
            int z = data.read(Type.INT, 2);
            return PacketUtil.createPacket(0x36, new TypeHolder[] { set(Type.LONG, toBlockPosition(x, y, z)) });
        }
    });
    // tab list item
    addTranslator(0x38, ProtocolState.PLAY, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            String u = data.read(Type.V1_7_STRING, 0);
            if (u == null) {
                // skip if server is updating ping or something
                return cancel();
            }
            String username = ChatUtils.stripColor(u);
            boolean online = data.read(Type.BOOLEAN, 1);
            UUID uuid = UUID.nameUUIDFromBytes(("fake:" + username).getBytes(Charsets.UTF_8));
            if (username.equals(session.getUserData().getUsername())) {
                uuid = session.getUserData().getUniqueId();
            }
            if (online) {
                TabListEntry tabAddListEntry = new TabListEntry(TabListAction.ADD_PLAYER, new PlayerListEntry[] { new PlayerListEntry(new GameProfile(uuid, username), new Property[0], 0, 0, null) });
                return PacketUtil.createPacket(0x38, new TypeHolder[] { set(Type.TAB_LIST_ENTRY, tabAddListEntry) });
            } else {
                TabListEntry tabRemoveListEntry = new TabListEntry(TabListAction.REMOVE_PLAYER, new PlayerListEntry[] { new PlayerListEntry(new GameProfile(uuid, username)) });
                return PacketUtil.createPacket(0x38, new TypeHolder[] { set(Type.TAB_LIST_ENTRY, tabRemoveListEntry) });
            }
        }
    });
    // set experience
    addTranslator(0x1F, ProtocolState.PLAY, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            return PacketUtil.createPacket(0x1F, new TypeHolder[] { data.read(0), set(Type.VAR_INT, data.read(Type.SHORT, 1).intValue()), set(Type.VAR_INT, data.read(Type.SHORT, 2).intValue()) });
        }
    });
    // use bed
    addTranslator(0x0A, ProtocolState.PLAY, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            int x = data.read(Type.INT, 1);
            byte y = data.read(Type.BYTE, 2);
            int z = data.read(Type.INT, 3);
            return PacketUtil.createPacket(0x0A, new TypeHolder[] { set(Type.VAR_INT, data.read(Type.INT, 0)), set(Type.LONG, toBlockPosition(x, y, z)) });
        }
    });
    // collect item
    addTranslator(0x0D, ProtocolState.PLAY, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            return PacketUtil.createPacket(0x0D, new TypeHolder[] { set(Type.VAR_INT, data.read(Type.INT, 0)), set(Type.VAR_INT, data.read(Type.INT, 1)) });
        }
    });
    // custom payload
    addTranslator(0x3F, ProtocolState.PLAY, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @SneakyThrows
        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            String channel = data.read(Type.V1_7_STRING, 0);
            byte[] bytes = data.read(Type.SHORT_BYTE_ARRAY, 1);
            byte[] remappedData;
            NettyOutputWrapper fixedPayload = new NettyOutputWrapper(Unpooled.buffer());
            switch(channel) {
                case "MC|TrList":
                    NettyInputWrapper buf = new NettyInputWrapper(Unpooled.wrappedBuffer(bytes));
                    fixedPayload.writeInt(buf.readInt());
                    int items = buf.readByte();
                    fixedPayload.writeByte(items);
                    for (int i = 0; i < items; i++) {
                        V1_8RProtocol.ITEM.write(set(Type.V1_8R_ITEM, V1_3_1RProtocol.ITEM.read(buf)), fixedPayload);
                        V1_8RProtocol.ITEM.write(set(Type.V1_8R_ITEM, V1_3_1RProtocol.ITEM.read(buf)), fixedPayload);
                        boolean hasAdditionalItem = buf.readBoolean();
                        fixedPayload.writeBoolean(hasAdditionalItem);
                        if (hasAdditionalItem) {
                            V1_8RProtocol.ITEM.write(set(Type.V1_8R_ITEM, V1_3_1RProtocol.ITEM.read(buf)), fixedPayload);
                        }
                        fixedPayload.writeBoolean(buf.readBoolean());
                        fixedPayload.writeInt(0);
                        fixedPayload.writeInt(7);
                    }
                    remappedData = fixedPayload.array();
                    break;
                case "MC|RPack":
                    return cancel();
                case "MC|Brand":
                    V1_7_2RProtocol.STRING.write(set(Type.V1_7_STRING, new String(bytes, StandardCharsets.UTF_8)), fixedPayload);
                    remappedData = fixedPayload.array();
                    break;
                default:
                    remappedData = bytes;
                    break;
            }
            return PacketUtil.createPacket(0x3F, new TypeHolder[] { data.read(0), set(Type.READABLE_BYTES, remappedData) });
        }
    });
    // entity attributes
    addTranslator(0x20, ProtocolState.PLAY, PacketDirection.TO_CLIENT, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            return PacketUtil.createPacket(0x20, new TypeHolder[] { set(Type.VAR_INT, data.read(Type.INT, 0)), set(Type.V1_8_ENTITY_ATTRIBUTES, data.read(Type.V1_7_ENTITY_ATTRIBUTES, 1)) });
        }
    });
    // client packets
    // keep alive
    addTranslator(0x00, ProtocolState.PLAY, PacketDirection.TO_SERVER, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            return PacketUtil.createPacket(0x00, new TypeHolder[] { set(Type.INT, data.read(Type.VAR_INT, 0)) });
        }
    });
    // use entity
    addTranslator(0x02, ProtocolState.PLAY, PacketDirection.TO_SERVER, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            OptionalPosition optPos = data.read(Type.V1_8R_USE_ENTITY_OPTIONAL_POSITION, 1);
            int action = optPos.getAction();
            if (action == 2) {
                return cancel();
            }
            return PacketUtil.createPacket(0x02, new TypeHolder[] { set(Type.INT, data.read(Type.VAR_INT, 0)), set(Type.BYTE, (byte) action) });
        }
    });
    // player digging
    addTranslator(0x07, ProtocolState.PLAY, PacketDirection.TO_SERVER, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            long encodedPosition = data.read(Type.LONG, 1);
            int action = data.read(Type.UNSIGNED_BYTE, 0);
            BlockLocation l = fromBlockPosition(encodedPosition);
            ProtocolStorage storage = session.getStorage();
            if (storage.hasObject(BlockMiningTimeFixer.class) && storage.hasObject(BlockStorage.class)) {
                BlockMiningTimeFixer blockMiningTimeFixer = storage.get(BlockMiningTimeFixer.class);
                BlockStorage blockStorage = storage.get(BlockStorage.class);
                switch(action) {
                    case // start digging
                    0:
                        blockMiningTimeFixer.onBlockStartBreaking(l);
                        break;
                    case // cancel digging
                    1:
                        blockMiningTimeFixer.onBlockCancelBreaking(l);
                        break;
                    case // finish digging
                    2:
                        if (HardnessTable.exist(blockStorage.getBlockAt(l.getX(), l.getY(), l.getZ()))) {
                            return cancel();
                        }
                        break;
                }
            }
            return PacketUtil.createPacket(0x07, new TypeHolder[] { data.read(0), set(Type.INT, l.getX()), set(Type.UNSIGNED_BYTE, (short) l.getY()), set(Type.INT, l.getZ()), set(Type.UNSIGNED_BYTE, data.read(Type.BYTE, 2).shortValue()) });
        }
    });
    // place block
    addTranslator(0x08, ProtocolState.PLAY, PacketDirection.TO_SERVER, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            long encodedPosition = data.read(Type.LONG, 0);
            BlockLocation l = fromBlockPosition(encodedPosition);
            ItemStack itemStack = data.read(Type.V1_8R_ITEM, 2);
            // 1.0+ servers are kicking players when placed block is 0. Should be null
            if (itemStack != null && itemStack.getItemId() == 0)
                itemStack = null;
            if (itemStack != null && itemStack.getItemId() == 387) /* written book */
            {
                PacketData payload = PacketUtil.createPacket(0x3F, new TypeHolder[] { set(Type.V1_7_STRING, "MC|BOpen") });
                session.sendPacket(payload, PacketDirection.TO_CLIENT, getFrom());
            }
            return PacketUtil.createPacket(0x08, new TypeHolder[] { set(Type.INT, l.getX()), set(Type.UNSIGNED_BYTE, (short) l.getY()), set(Type.INT, l.getZ()), data.read(1), set(Type.V1_3R_ITEM, itemStack), data.read(3), data.read(4), data.read(5) });
        }
    });
    // animation
    addTranslator(0x0A, ProtocolState.PLAY, PacketDirection.TO_SERVER, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            return PacketUtil.createPacket(0x0A, new TypeHolder[] { set(Type.INT, 0), set(Type.BYTE, (byte) 1) });
        }
    });
    // entity action
    addTranslator(0x0B, ProtocolState.PLAY, PacketDirection.TO_SERVER, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            int action = data.read(Type.VAR_INT, 1);
            return PacketUtil.createPacket(0x0B, new TypeHolder[] { set(Type.INT, data.read(Type.VAR_INT, 0)), set(Type.BYTE, (byte) (action + 1)), set(Type.INT, data.read(Type.VAR_INT, 2)) });
        }
    });
    // update sign
    addTranslator(0x12, ProtocolState.PLAY, PacketDirection.TO_SERVER, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            long encodedPosition = data.read(Type.LONG, 0);
            BlockLocation l = fromBlockPosition(encodedPosition);
            String[] lines = new String[4];
            for (int i = 0; i < 4; i++) {
                String msg = data.read(Type.V1_7_STRING, 1 + i);
                if (msg.startsWith("\"")) {
                    msg = ChatUtils.createChatComponentFromInvalidJson(msg);
                }
                msg = ChatUtils.jsonToLegacy(msg);
                msg = StringUtils.substring(msg, 0, 15);
                lines[i] = msg;
            }
            return PacketUtil.createPacket(0x12, new TypeHolder[] { set(Type.INT, l.getX()), set(Type.SHORT, (short) l.getY()), set(Type.INT, l.getZ()), set(Type.V1_7_STRING, lines[0]), set(Type.V1_7_STRING, lines[1]), set(Type.V1_7_STRING, lines[2]), set(Type.V1_7_STRING, lines[3]) });
        }
    });
    // tab complete
    addTranslator(0x14, ProtocolState.PLAY, PacketDirection.TO_SERVER, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            return PacketUtil.createPacket(0x14, new TypeHolder[] { data.read(0) });
        }
    });
    // client settings
    addTranslator(0x15, ProtocolState.PLAY, PacketDirection.TO_SERVER, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            return PacketUtil.createPacket(0x15, new TypeHolder[] { data.read(0), data.read(1), data.read(2), data.read(3), data.read(4), set(Type.BOOLEAN, false) });
        }
    });
    // custom payload
    addTranslator(0x17, ProtocolState.PLAY, PacketDirection.TO_SERVER, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) throws IOException {
            byte[] bytes = data.read(Type.READABLE_BYTES, 1);
            String channel = data.read(Type.V1_7_STRING, 0);
            if (channel.equals("MC|BEdit") || channel.equals("MC|BSign")) {
                NettyInputWrapper in = new NettyInputWrapper(Unpooled.wrappedBuffer(bytes));
                NettyOutputWrapper out = new NettyOutputWrapper(Unpooled.buffer());
                ItemStack compressedItem = V1_8RProtocol.ITEM.read(in);
                V1_3_1RProtocol.ITEM.write(new TypeHolder<>(Type.V1_3R_ITEM, compressedItem), out);
                bytes = out.array();
            }
            return PacketUtil.createPacket(0x17, new TypeHolder[] { data.read(0), set(Type.SHORT_BYTE_ARRAY, bytes) });
        }
    });
    // player input
    addTranslator(0x0C, ProtocolState.PLAY, PacketDirection.TO_SERVER, new PacketTranslator() {

        @Override
        public PacketData translate(ServerSession session, PacketData data) {
            byte status = data.read(Type.BYTE, 2);
            return PacketUtil.createPacket(0x0C, new TypeHolder[] { data.read(0), data.read(1), set(Type.BOOLEAN, (status & 1) == 1), set(Type.BOOLEAN, (status & 2) == 2) });
        }
    });
    // map data
    addTranslator(0x34, -1, ProtocolState.PLAY, PacketDirection.TO_CLIENT);
    // spawn particle
    addTranslator(0x2A, -1, ProtocolState.PLAY, PacketDirection.TO_CLIENT);
}

Example 4 with NettyInputWrapper

use of com.github.dirtpowered.dirtmv.data.protocol.io.NettyInputWrapper in project DirtMultiversion by DirtPowered.

the class PacketDecompressor method decode.

@Override
protected void decode(ChannelHandlerContext channelHandlerContext, ByteBuf byteBuf, List<Object> list) {
    if (byteBuf.readableBytes() == 0)
        return;
    NettyInputWrapper inputWrapper = new NettyInputWrapper(byteBuf);
    int size = inputWrapper.readVarInt();
    if (size == 0) {
        list.add(byteBuf.readBytes(byteBuf.readableBytes()));
    } else {
        byte[] compressedData = new byte[byteBuf.readableBytes()];
        byteBuf.readBytes(compressedData);
        inflater.setInput(compressedData);
        byte[] data = new byte[size];
        try {
            inflater.inflate(data);
        } catch (DataFormatException e) {
            Logger.warn("Couldn't decompress packet: {}", e.getMessage());
        }
        list.add(Unpooled.wrappedBuffer(data));
        inflater.reset();
    }
}

Example 5 with NettyInputWrapper

use of com.github.dirtpowered.dirtmv.data.protocol.io.NettyInputWrapper in project DirtMultiversion by DirtPowered.

the class VarIntFrameDecoder method decode.

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf buffer, List<Object> out) {
    if (!buffer.isReadable()) {
        return;
    }
    NettyInputWrapper inputWrapper = new NettyInputWrapper(buffer);
    int index = buffer.readerIndex();
    for (int i = 0; i < 3; i++) {
        if (!buffer.isReadable()) {
            buffer.readerIndex(index);
            return;
        }
        byte read = buffer.readByte();
        if (read >= 0) {
            buffer.readerIndex(index);
            int packetLength = inputWrapper.readVarInt();
            if (packetLength == 0) {
                return;
            }
            if (buffer.readableBytes() < packetLength) {
                buffer.readerIndex(index);
                return;
            }
            out.add(buffer.readRetainedSlice(packetLength));
            return;
        }
    }
    throw new CorruptedFrameException("VarInt too big");
}