private boolean handleServerSideCustomPacket(
C17PacketCustomPayload msg, ChannelHandlerContext context) {
if (state == ConnectionState.AWAITING_HANDSHAKE) {
synchronized (this) { // guard from other threads changing the state on us
if (state == ConnectionState.AWAITING_HANDSHAKE) {
state = ConnectionState.HANDSHAKING;
}
}
}
String channelName = msg.getChannelName();
if ("FML|HS".equals(channelName)
|| "REGISTER".equals(channelName)
|| "UNREGISTER".equals(channelName)) {
FMLProxyPacket proxy = new FMLProxyPacket(msg);
proxy.setDispatcher(this);
handshakeChannel.writeInbound(proxy);
for (Object push : handshakeChannel.inboundMessages()) {
List<FMLProxyPacket> messageResult =
FMLNetworkHandler.forwardHandshake(
(FMLMessage.CompleteHandshake) push, this, Side.SERVER);
for (FMLProxyPacket result : messageResult) {
result.setTarget(Side.SERVER);
result.payload().resetReaderIndex();
context.fireChannelRead(result);
}
}
handshakeChannel.inboundMessages().clear();
return true;
} else if (NetworkRegistry.INSTANCE.hasChannel(channelName, Side.SERVER)) {
FMLProxyPacket proxy = new FMLProxyPacket(msg);
proxy.setDispatcher(this);
context.fireChannelRead(proxy);
return true;
}
return false;
}
/**
* @author zml
* <p>Purpose: replace the logic used for command blocks to make functional
* @param ci callback
* @param packetIn method param
*/
@Inject(
method = "processVanilla250Packet",
at =
@At(
value = "INVOKE",
shift = At.Shift.AFTER,
target =
"net/minecraft/network/PacketThreadUtil.checkThreadAndEnqueue(Lnet/minecraft/network/Packet;"
+ "Lnet/minecraft/network/INetHandler;Lnet/minecraft/util/IThreadListener;)V"),
cancellable = true)
public void processCommandBlock(C17PacketCustomPayload packetIn, CallbackInfo ci) {
if ("MC|AdvCdm".equals(packetIn.getChannelName())) {
PacketBuffer packetbuffer;
try {
if (!this.serverController.isCommandBlockEnabled()) {
this.playerEntity.addChatMessage(
new ChatComponentTranslation("advMode.notEnabled", new Object[0]));
// Sponge: Check permissions for command block usage TODO: Maybe throw an event instead?
// } else if (this.playerEntity.canCommandSenderUseCommand(2, "") &&
// this.playerEntity.capabilities.isCreativeMode) {
} else {
packetbuffer = packetIn.getBufferData();
try {
byte b0 = packetbuffer.readByte();
CommandBlockLogic commandblocklogic = null;
String permissionCheck = null; // Sponge
if (b0 == 0) {
TileEntity tileentity =
this.playerEntity.worldObj.getTileEntity(
new BlockPos(
packetbuffer.readInt(), packetbuffer.readInt(), packetbuffer.readInt()));
if (tileentity instanceof TileEntityCommandBlock) {
commandblocklogic = ((TileEntityCommandBlock) tileentity).getCommandBlockLogic();
permissionCheck =
"minecraft.commandblock.edit.block."
+ commandblocklogic.getCommandSenderName(); // Sponge
}
} else if (b0 == 1) {
Entity entity = this.playerEntity.worldObj.getEntityByID(packetbuffer.readInt());
if (entity instanceof EntityMinecartCommandBlock) {
commandblocklogic = ((EntityMinecartCommandBlock) entity).getCommandBlockLogic();
permissionCheck =
"minecraft.commandblock.edit.minecart."
+ commandblocklogic.getCommandSenderName(); // Sponge
}
// Sponge begin
} else {
throw new IllegalArgumentException("Unknown command block type!");
}
Player spongePlayer = ((Player) this.playerEntity);
if (permissionCheck == null || !spongePlayer.hasPermission(permissionCheck)) {
spongePlayer.sendMessage(
t("You do not have permission to edit this command block!")
.builder()
.color(TextColors.RED)
.build());
return;
// Sponge end
}
String s1 = packetbuffer.readStringFromBuffer(packetbuffer.readableBytes());
boolean flag = packetbuffer.readBoolean();
if (commandblocklogic != null) {
commandblocklogic.setCommand(s1);
commandblocklogic.setTrackOutput(flag);
if (!flag) {
commandblocklogic.setLastOutput((IChatComponent) null);
}
commandblocklogic.func_145756_e();
this.playerEntity.addChatMessage(
new ChatComponentTranslation("advMode.setCommand.success", new Object[] {s1}));
}
} catch (Exception exception1) {
logger.error("Couldn\'t set command block", exception1);
} finally {
packetbuffer.release();
}
/*} else { // Sponge: Give more accurate no permission message
this.playerEntity.addChatMessage(new ChatComponentTranslation("advMode.notAllowed", new Object[0]));*/
}
} finally {
ci.cancel();
}
}
}
// patch method
@Overwrite
public void processVanilla250Packet(C17PacketCustomPayload p_147349_1_) {
PacketBuffer packetbuffer;
ItemStack itemstack;
ItemStack itemstack1;
if ("MC|BEdit".equals(p_147349_1_.func_149559_c())) {
packetbuffer = new PacketBuffer(Unpooled.wrappedBuffer(p_147349_1_.func_149558_e()));
try {
itemstack = packetbuffer.readItemStackFromBuffer();
if (itemstack == null) {
return;
}
if (!ItemWritableBook.func_150930_a(itemstack.getTagCompound())) {
throw new IOException("Invalid book tag!");
}
itemstack1 = playerEntity.inventory.getCurrentItem();
if (itemstack1 != null) {
if (itemstack.getItem() == Items.writable_book
&& itemstack.getItem() == itemstack1.getItem()) {
itemstack1.setTagInfo("pages", itemstack.getTagCompound().getTagList("pages", 8));
}
return;
}
} catch (Exception exception4) {
logger.error("Couldn\'t handle book info", exception4);
return;
} finally {
packetbuffer.release();
}
return;
} else if ("MC|BSign".equals(p_147349_1_.func_149559_c())) {
packetbuffer = new PacketBuffer(Unpooled.wrappedBuffer(p_147349_1_.func_149558_e()));
try {
itemstack = packetbuffer.readItemStackFromBuffer();
if (itemstack != null) {
if (!ItemEditableBook.validBookTagContents(itemstack.getTagCompound())) {
throw new IOException("Invalid book tag!");
}
itemstack1 = playerEntity.inventory.getCurrentItem();
if (itemstack1 == null) {
return;
}
if (itemstack.getItem() == Items.written_book
&& itemstack1.getItem() == Items.writable_book) {
itemstack1.setTagInfo("author", new NBTTagString(playerEntity.getCommandSenderName()));
itemstack1.setTagInfo(
"title", new NBTTagString(itemstack.getTagCompound().getString("title")));
itemstack1.setTagInfo("pages", itemstack.getTagCompound().getTagList("pages", 8));
itemstack1.func_150996_a(Items.written_book);
}
return;
}
} catch (Exception exception3) {
logger.error("Couldn\'t sign book", exception3);
return;
} finally {
packetbuffer.release();
}
return;
} else {
DataInputStream datainputstream;
int i;
if ("MC|TrSel".equals(p_147349_1_.func_149559_c())) {
try {
datainputstream =
new DataInputStream(new ByteArrayInputStream(p_147349_1_.func_149558_e()));
i = datainputstream.readInt();
Container container = playerEntity.openContainer;
if (container instanceof ContainerMerchant) {
((ContainerMerchant) container).setCurrentRecipeIndex(i);
}
} catch (Exception exception2) {
logger.error("Couldn\'t select trade", exception2);
}
} else if ("MC|AdvCdm".equals(p_147349_1_.func_149559_c())) {
if (!serverController.isCommandBlockEnabled()) {
playerEntity.addChatMessage(
new ChatComponentTranslation("advMode.notEnabled", new Object[0]));
} else if (PermissionManager.checkPermission(playerEntity, "mc.cmdblocks")
&& playerEntity.capabilities.isCreativeMode) {
packetbuffer = new PacketBuffer(Unpooled.wrappedBuffer(p_147349_1_.func_149558_e()));
try {
byte b0 = packetbuffer.readByte();
CommandBlockLogic commandblocklogic = null;
if (b0 == 0) {
TileEntity tileentity =
playerEntity.worldObj.getTileEntity(
packetbuffer.readInt(), packetbuffer.readInt(), packetbuffer.readInt());
if (tileentity instanceof TileEntityCommandBlock) {
commandblocklogic = ((TileEntityCommandBlock) tileentity).func_145993_a();
}
} else if (b0 == 1) {
Entity entity = playerEntity.worldObj.getEntityByID(packetbuffer.readInt());
if (entity instanceof EntityMinecartCommandBlock) {
commandblocklogic = ((EntityMinecartCommandBlock) entity).func_145822_e();
}
}
String s1 = packetbuffer.readStringFromBuffer(packetbuffer.readableBytes());
if (commandblocklogic != null) {
commandblocklogic.func_145752_a(s1);
commandblocklogic.func_145756_e();
playerEntity.addChatMessage(
new ChatComponentTranslation("advMode.setCommand.success", new Object[] {s1}));
}
} catch (Exception exception1) {
logger.error("Couldn\'t set command block", exception1);
} finally {
packetbuffer.release();
}
} else {
playerEntity.addChatMessage(
new ChatComponentTranslation("advMode.notAllowed", new Object[0]));
}
} else if ("MC|Beacon".equals(p_147349_1_.func_149559_c())) {
if (playerEntity.openContainer instanceof ContainerBeacon) {
try {
datainputstream =
new DataInputStream(new ByteArrayInputStream(p_147349_1_.func_149558_e()));
i = datainputstream.readInt();
int j = datainputstream.readInt();
ContainerBeacon containerbeacon = (ContainerBeacon) playerEntity.openContainer;
Slot slot = containerbeacon.getSlot(0);
if (slot.getHasStack()) {
slot.decrStackSize(1);
TileEntityBeacon tileentitybeacon = containerbeacon.func_148327_e();
tileentitybeacon.setPrimaryEffect(i);
tileentitybeacon.setSecondaryEffect(j);
tileentitybeacon.markDirty();
}
} catch (Exception exception) {
logger.error("Couldn\'t set beacon", exception);
}
}
} else if ("MC|ItemName".equals(p_147349_1_.func_149559_c())
&& playerEntity.openContainer instanceof ContainerRepair) {
ContainerRepair containerrepair = (ContainerRepair) playerEntity.openContainer;
if (p_147349_1_.func_149558_e() != null && p_147349_1_.func_149558_e().length >= 1) {
String s =
ChatAllowedCharacters.filerAllowedCharacters(
new String(p_147349_1_.func_149558_e(), Charsets.UTF_8));
if (s.length() <= 30) {
containerrepair.updateItemName(s);
}
} else {
containerrepair.updateItemName("");
}
}
}
}