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Code Issues Projects Releases Packages Wiki Activity

Catch desynced block breaks (#6193)

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This commit is contained in:
Jake Potrebic 2021-07-15 16:00:58 -07:00
parent 83db66562f
commit 6602dc655e
2 changed files with 30 additions and 1 deletions
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9
patches/server/Add-PlayerKickEvent-causes.patch
View file

@ -209,6 +209,15 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
return;
}
}
@@ -0,0 +0,0 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
double blockDistanceSquared = this.player.distanceToSqr(blockposition.getX() + 0.5D, blockposition.getY() + 0.5D + 1.5D, blockposition.getZ() + 0.5D); // Copied from ServerPlayerGameMode#handleBlockBreakAction
if (blockDistanceSquared > 40 * 40) {
LOGGER.warn("{} tried to break a block {} square blocks away from their position", this.player.getScoreboardName(), blockDistanceSquared);
- this.disconnect("Invalid block break distance");
+ this.disconnect("Invalid block break distance", org.bukkit.event.player.PlayerKickEvent.Cause.ILLEGAL_ACTION);
return;
}
if (this.player.level.getChunkIfLoadedImmediately(blockposition.getX() >> 4, blockposition.getZ() >> 4) == null) {
@@ -0,0 +0,0 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
PacketUtils.ensureRunningOnSameThread(packet, this, this.player.getLevel());
if (packet.getAction() == ServerboundResourcePackPacket.Action.DECLINED && this.server.isResourcePackRequired()) {

22
patches/server/Don-t-allow-digging-into-unloaded-chunks.patch
View file

@ -34,6 +34,18 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
if (iblockdata.isAir()) {
this.level.destroyBlockProgress(this.player.getId(), this.destroyPos, -1);
this.lastSentState = -1;
@@ -0,0 +0,0 @@ public class ServerPlayerGameMode {
double d1 = this.player.getY() - ((double) pos.getY() + 0.5D) + 1.5D;
double d2 = this.player.getZ() - ((double) pos.getZ() + 0.5D);
double d3 = d0 * d0 + d1 * d1 + d2 * d2;
+ // Paper start
+ this.handleBlockBreakAction(pos, action, direction, worldHeight, d3);
+ }
+ public void handleBlockBreakAction(BlockPos pos, ServerboundPlayerActionPacket.Action action, Direction direction, int worldHeight, double d3) {
+ // Paper end
if (d3 > 36.0D) {
this.player.connection.send(new ClientboundBlockBreakAckPacket(pos, this.level.getBlockState(pos), action, false, "too far"));
@@ -0,0 +0,0 @@ public class ServerPlayerGameMode {
this.player.connection.send(new ClientboundBlockBreakAckPacket(pos, this.level.getBlockState(pos), action, true, "stopped destroying"));
} else if (action == ServerboundPlayerActionPacket.Action.ABORT_DESTROY_BLOCK) {
@ -58,11 +70,19 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
case START_DESTROY_BLOCK:
case ABORT_DESTROY_BLOCK:
case STOP_DESTROY_BLOCK:
- this.player.gameMode.handleBlockBreakAction(blockposition, packetplayinblockdig_enumplayerdigtype, packet.getDirection(), this.player.level.getMaxBuildHeight());
+ // Paper start - Don't allow digging in unloaded chunks
+ double blockDistanceSquared = this.player.distanceToSqr(blockposition.getX() + 0.5D, blockposition.getY() + 0.5D + 1.5D, blockposition.getZ() + 0.5D); // Copied from ServerPlayerGameMode#handleBlockBreakAction
+ if (blockDistanceSquared > 40 * 40) {
+ LOGGER.warn("{} tried to break a block {} square blocks away from their position", this.player.getScoreboardName(), blockDistanceSquared);
+ this.disconnect("Invalid block break distance");
+ return;
+ }
+ if (this.player.level.getChunkIfLoadedImmediately(blockposition.getX() >> 4, blockposition.getZ() >> 4) == null) {
+ return;
+ }
+ this.player.gameMode.handleBlockBreakAction(blockposition, packetplayinblockdig_enumplayerdigtype, packet.getDirection(), this.player.level.getMaxBuildHeight(), blockDistanceSquared);
+ // Paper end - Don't allow digging in unloaded chunks
this.player.gameMode.handleBlockBreakAction(blockposition, packetplayinblockdig_enumplayerdigtype, packet.getDirection(), this.player.level.getMaxBuildHeight());
return;
default:
throw new IllegalArgumentException("Invalid player action");