Do not perform neighbour updates when using debug stick (Fixes #2134)

CB blindly drops any update flags when recording block modifications,
this causes the debug stick to blindly update neighbouring blocks on usage
in order to control this, we will special case this item, however, this
ideally should be fixed by recording the actual update flags used,
but will induce ABI breaks...

This patch also maintains the behavior of the BlockPlaceEvent, this
behavior will NOT be guaranteed in the future, however.
This commit is contained in:
Shane Freeder
2020-12-22 22:45:10 +00:00
parent 855cb5a9b5
commit 08f196719f
3 changed files with 71 additions and 1 deletions

View File

@@ -38,9 +38,14 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
@Override
public void a(PacketPlayInBEdit packetplayinbedit) {
+ // Paper start
+ ItemStack testStack = packetplayinbedit.b(); // TODO(Proximyst): Add obfhelper here
+ ItemStack testStack = packetplayinbedit.getBook();
+ if (!server.isPrimaryThread() && !testStack.isEmpty() && testStack.getTag() != null) {
+ NBTTagList pageList = testStack.getTag().getList("pages", 8);
+ if (pageList.size() > 50) {
+ PlayerConnection.LOGGER.warn(this.player.getName() + " tried to send a book with too many pages");
+ minecraftServer.scheduleOnMain(() -> this.disconnect("Book too large!"));
+ return;
+ }
+ long byteTotal = 0;
+ int maxBookPageSize = com.destroystokyo.paper.PaperConfig.maxBookPageSize;
+ double multiplier = Math.max(0.3D, Math.min(1D, com.destroystokyo.paper.PaperConfig.maxBookTotalSizeMultiplier));
@@ -48,6 +53,11 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
+ for (int i = 0; i < pageList.size(); ++i) {
+ String testString = pageList.getString(i);
+ int byteLength = testString.getBytes(java.nio.charset.StandardCharsets.UTF_8).length;
+ if (byteLength > 256 * 4) {
+ PlayerConnection.LOGGER.warn(this.player.getName() + " tried to send a book with with a page too large!");
+ minecraftServer.scheduleOnMain(() -> this.disconnect("Book too large!"));
+ return;
+ }
+ byteTotal += byteLength;
+ int length = testString.length();
+ int multibytes = 0;