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Fix command signs (#6139)

This commit is contained in:
Jake Potrebic 2021-07-11 11:06:49 -07:00 committed by GitHub
parent 55d5c1650f
commit 70ea1b2e2b
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 191 additions and 40 deletions
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4
build-data/mappings-patch.tiny
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@ -51,3 +51,7 @@ c net/minecraft/world/level/block/entity/IHopper net/minecraft/world/level/block
# Teleport method in ServerGamePacketListenerImpl
c net/minecraft/server/network/PlayerConnection net/minecraft/server/network/ServerGamePacketListenerImpl
m (DDDFFLorg/bukkit/event/player/PlayerTeleportEvent$TeleportCause;)V a teleport
# Commands performCommand adds a stripSlash boolean
c net/minecraft/commands/CommandDispatcher net/minecraft/commands/Commands
m (Lnet/minecraft/commands/CommandListenerWrapper;Ljava/lang/String;Ljava/lang/String;Z)I a performCommand

46
patches/api/0323-Add-PlayerSignCommandPreprocessEvent.patch Normal file
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@ -0,0 +1,46 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Fri, 9 Jul 2021 17:44:33 -0700
Subject: [PATCH] Add PlayerSignCommandPreprocessEvent
diff --git a/src/main/java/io/papermc/paper/event/player/PlayerSignCommandPreprocessEvent.java b/src/main/java/io/papermc/paper/event/player/PlayerSignCommandPreprocessEvent.java
new file mode 100644
index 0000000000000000000000000000000000000000..a51a2288bf812e7d8845a6ec70274d625ff793b6
--- /dev/null
+++ b/src/main/java/io/papermc/paper/event/player/PlayerSignCommandPreprocessEvent.java
@@ -0,0 +1,34 @@
+package io.papermc.paper.event.player;
+
+import org.bukkit.block.Sign;
+import org.bukkit.entity.Player;
+import org.bukkit.event.player.PlayerCommandPreprocessEvent;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Set;
+
+/**
+ * Called when a {@link Player} clicks a sign that causes a command to run.
+ * <p>
+ * This command is run with elevated permissions which allows players to access commands on signs they wouldn't
+ * normally be able to run.
+ */
+public class PlayerSignCommandPreprocessEvent extends PlayerCommandPreprocessEvent {
+
+ private final Sign sign;
+
+ public PlayerSignCommandPreprocessEvent(@NotNull Player player, @NotNull String message, @NotNull Set<Player> recipients, @NotNull Sign sign) {
+ super(player, message, recipients);
+ this.sign = sign;
+ }
+
+ /**
+ * Gets the sign that the command originated from.
+ *
+ * @return the sign
+ */
+ @NotNull
+ public Sign getSign() {
+ return sign;
+ }
+}

141
patches/server/0723-Fix-commands-from-signs-not-firing-command-events.patch Normal file
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@ -0,0 +1,141 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Fri, 9 Jul 2021 13:50:48 -0700
Subject: [PATCH] Fix commands from signs not firing command events
This patch changes sign command logic so that `run_command` click events:
- are logged to the console
- fire PlayerCommandPreprocessEvent
- work with double-slash commands like `//wand`
- sends failure messages to the player who clicked the sign
diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 26e18a08a7f0bd704ff3055ce3a7814191450c85..33d7a5da8764c5f6b8e911faecb6b4282443a60b 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -820,5 +820,10 @@ public class PaperWorldConfig {
private void fixInvulnerableEndCrystalExploit() {
fixInvulnerableEndCrystalExploit = getBoolean("unsupported-settings.fix-invulnerable-end-crystal-exploit", fixInvulnerableEndCrystalExploit);
}
+
+ public boolean showSignClickCommandFailureMessagesToPlayer = false;
+ private void showSignClickCommandFailureMessagesToPlayer() {
+ showSignClickCommandFailureMessagesToPlayer = getBoolean("show-sign-click-command-failure-msgs-to-player", showSignClickCommandFailureMessagesToPlayer);
+ }
}
diff --git a/src/main/java/io/papermc/paper/commands/DelegatingCommandSource.java b/src/main/java/io/papermc/paper/commands/DelegatingCommandSource.java
new file mode 100644
index 0000000000000000000000000000000000000000..1f6747d7a4c33f0ee7b0dc2120081bb87a855d35
--- /dev/null
+++ b/src/main/java/io/papermc/paper/commands/DelegatingCommandSource.java
@@ -0,0 +1,42 @@
+package io.papermc.paper.commands;
+
+import net.minecraft.commands.CommandSource;
+import net.minecraft.commands.CommandSourceStack;
+import net.minecraft.network.chat.Component;
+import org.bukkit.command.CommandSender;
+
+import java.util.UUID;
+
+public class DelegatingCommandSource implements CommandSource {
+
+ private final CommandSource delegate;
+
+ public DelegatingCommandSource(CommandSource delegate) {
+ this.delegate = delegate;
+ }
+
+ @Override
+ public void sendMessage(Component message, UUID sender) {
+ delegate.sendMessage(message, sender);
+ }
+
+ @Override
+ public boolean acceptsSuccess() {
+ return delegate.acceptsSuccess();
+ }
+
+ @Override
+ public boolean acceptsFailure() {
+ return delegate.acceptsFailure();
+ }
+
+ @Override
+ public boolean shouldInformAdmins() {
+ return delegate.shouldInformAdmins();
+ }
+
+ @Override
+ public CommandSender getBukkitSender(CommandSourceStack wrapper) {
+ return delegate.getBukkitSender(wrapper);
+ }
+}
diff --git a/src/main/java/net/minecraft/world/level/block/entity/SignBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/SignBlockEntity.java
index 9b5d11ece006d7aa893360a84ba652c666517ac1..344d3a8c1162f1a4ab5fc2b7676680ddace46649 100644
--- a/src/main/java/net/minecraft/world/level/block/entity/SignBlockEntity.java
+++ b/src/main/java/net/minecraft/world/level/block/entity/SignBlockEntity.java
@@ -41,6 +41,7 @@ public class SignBlockEntity extends BlockEntity implements CommandSource { // C
private boolean renderMessagedFiltered;
private DyeColor color;
private boolean hasGlowingText;
+ private static final org.apache.logging.log4j.Logger LOGGER = org.apache.logging.log4j.LogManager.getLogger();
public SignBlockEntity(BlockPos pos, BlockState state) {
super(BlockEntityType.SIGN, pos, state);
@@ -227,7 +228,17 @@ public class SignBlockEntity extends BlockEntity implements CommandSource { // C
ClickEvent chatclickable = chatmodifier.getClickEvent();
if (chatclickable != null && chatclickable.getAction() == ClickEvent.Action.RUN_COMMAND) {
- player.getServer().getCommands().performCommand(this.createCommandSourceStack(player), chatclickable.getValue());
+ // Paper start
+ String command = chatclickable.getValue().startsWith("/") ? chatclickable.getValue() : "/" + chatclickable.getValue();
+ if (org.spigotmc.SpigotConfig.logCommands) {
+ LOGGER.info("{} issued server command: {}", player.getScoreboardName(), command);
+ }
+ io.papermc.paper.event.player.PlayerSignCommandPreprocessEvent event = new io.papermc.paper.event.player.PlayerSignCommandPreprocessEvent(player.getBukkitEntity(), command, new org.bukkit.craftbukkit.util.LazyPlayerSet(player.getServer()), (org.bukkit.block.Sign) net.minecraft.server.MCUtil.toBukkitBlock(this.level, this.worldPosition).getState());
+ if (!event.callEvent()) {
+ return false;
+ }
+ player.getServer().getCommands().performCommand(this.createCommandSourceStack(((org.bukkit.craftbukkit.entity.CraftPlayer) event.getPlayer()).getHandle()), event.getMessage());
+ // Paper end
}
}
@@ -263,8 +274,21 @@ public class SignBlockEntity extends BlockEntity implements CommandSource { // C
String s = player == null ? "Sign" : player.getName().getString();
Object object = player == null ? new TextComponent("Sign") : player.getDisplayName();
+ // Paper start - send messages back to the player
+ CommandSource commandSource = this.level.paperConfig.showSignClickCommandFailureMessagesToPlayer ? new io.papermc.paper.commands.DelegatingCommandSource(this) {
+ @Override
+ public void sendMessage(net.minecraft.network.chat.Component message, java.util.UUID sender) {
+ player.sendMessage(message, sender);
+ }
+
+ @Override
+ public boolean acceptsFailure() {
+ return true;
+ }
+ } : this;
+ // Paper end
// CraftBukkit - this
- return new CommandSourceStack(this, Vec3.atCenterOf((Vec3i) this.worldPosition), Vec2.ZERO, (ServerLevel) this.level, 2, s, (Component) object, this.level.getServer(), player);
+ return new CommandSourceStack(commandSource, Vec3.atCenterOf((Vec3i) this.worldPosition), Vec2.ZERO, (ServerLevel) this.level, 2, s, (Component) object, this.level.getServer(), player); // Paper
}
public DyeColor getColor() {
diff --git a/src/main/java/org/bukkit/craftbukkit/command/BukkitCommandWrapper.java b/src/main/java/org/bukkit/craftbukkit/command/BukkitCommandWrapper.java
index 0bba36d18d56a4dc2d6c6fb7969e5e6f0e1da404..a246a0bd9e57fb0703ba756e8aa1109f1674c0e8 100644
--- a/src/main/java/org/bukkit/craftbukkit/command/BukkitCommandWrapper.java
+++ b/src/main/java/org/bukkit/craftbukkit/command/BukkitCommandWrapper.java
@@ -50,7 +50,7 @@ public class BukkitCommandWrapper implements com.mojang.brigadier.Command<Comman
@Override
public int run(CommandContext<CommandSourceStack> context) throws CommandSyntaxException {
- return this.server.dispatchCommand(context.getSource().getBukkitSender(), context.getInput()) ? 1 : 0;
+ return this.server.dispatchCommand(context.getSource().getBukkitSender(), context.getRange().get(context.getInput())) ? 1 : 0; // Paper - actually use the StringRange from context
}
@Override

40
patches/server/0723-Route-sign-run_command-click-events-through-normal-c.patch
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@ -1,40 +0,0 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: mdcfe <1917406+mdcfe@users.noreply.github.com>
Date: Wed, 7 Jul 2021 12:29:48 +0100
Subject: [PATCH] Route sign run_command click events through normal chat logic
This patch changes sign command logic so that `run_command` click events are routed through the standard chat/command
logic used for inbound chat messages.
This fixes numerous issues related to sign click commands:
- Signs with a `run_command` value of "/<plugin command>" would fail and show the "Unknown command" warning. This
prevents usage of commands like `//wand` from WorldEdit in sign click events entirely and requires users to drop
the leading slash from other plugins' commands. This patch now executes the plugin commands as would be expected,
adding a leading slash if necessary.
- Signs with a `run_command` value that doesn't match an existing command could fail silently. This patch causes
these to *always* show "Unknown command" instead.
- Plugins listening to `PlayerCommandPreprocessEvent` would not be able to intercept any command executions from
sign click events. This patch allows plugins to intercept player commands when fired by a click event, in the same
manner as commands executed by the player typing or clicking on a chat message.
- Commands executed from signs would not be logged to the console. This patch fixes this.
This patch also prepends a leading slash if the `run_command` value lacks one, which matches vanilla behaviour (old
code would strip this slash away) while also ensuring `PlayerCommandPreprocessEvent#getMessage` remains consistent
with other command executions from chat (which always include the leading slash).
diff --git a/src/main/java/net/minecraft/world/level/block/entity/SignBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/SignBlockEntity.java
index 9b5d11ece006d7aa893360a84ba652c666517ac1..171fea79d3a7c282e473b0fbb46254e3cd9c7aa9 100644
--- a/src/main/java/net/minecraft/world/level/block/entity/SignBlockEntity.java
+++ b/src/main/java/net/minecraft/world/level/block/entity/SignBlockEntity.java
@@ -227,7 +227,10 @@ public class SignBlockEntity extends BlockEntity implements CommandSource { // C
ClickEvent chatclickable = chatmodifier.getClickEvent();
if (chatclickable != null && chatclickable.getAction() == ClickEvent.Action.RUN_COMMAND) {
- player.getServer().getCommands().performCommand(this.createCommandSourceStack(player), chatclickable.getValue());
+ // Paper start - route through standard chat/command logic
+ final String command = chatclickable.getValue().startsWith("/") ? chatclickable.getValue() : "/" + chatclickable.getValue();
+ player.connection.chat(command, false);
+ // Paper end
}
}