[Bleeding] Implement Mojang command fallback system. Adds BUKKIT-5385

5 files changed, 340 insertions, 10 deletions

diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 17c8039b..22f394d5 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -14,6 +14,7 @@ import java.util.LinkedHashMap;
 import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Map;
+import java.util.Map.Entry;
 import java.util.Set;
 import java.util.UUID;
 import java.util.logging.Level;
@@ -23,6 +24,47 @@ import javax.imageio.ImageIO;
 
 import net.minecraft.server.BanEntry;
 import net.minecraft.server.ChunkCoordinates;
+import net.minecraft.server.CommandAchievement;
+import net.minecraft.server.CommandBan;
+import net.minecraft.server.CommandBanIp;
+import net.minecraft.server.CommandBanList;
+import net.minecraft.server.CommandClear;
+import net.minecraft.server.CommandDeop;
+import net.minecraft.server.CommandDifficulty;
+import net.minecraft.server.CommandEffect;
+import net.minecraft.server.CommandEnchant;
+import net.minecraft.server.CommandGamemode;
+import net.minecraft.server.CommandGamemodeDefault;
+import net.minecraft.server.CommandGamerule;
+import net.minecraft.server.CommandGive;
+import net.minecraft.server.CommandHelp;
+import net.minecraft.server.CommandIdleTimeout;
+import net.minecraft.server.CommandKick;
+import net.minecraft.server.CommandKill;
+import net.minecraft.server.CommandList;
+import net.minecraft.server.CommandMe;
+import net.minecraft.server.CommandOp;
+import net.minecraft.server.CommandPardon;
+import net.minecraft.server.CommandPardonIP;
+import net.minecraft.server.CommandPlaySound;
+import net.minecraft.server.CommandSay;
+import net.minecraft.server.CommandScoreboard;
+import net.minecraft.server.CommandSeed;
+import net.minecraft.server.CommandSetBlock;
+import net.minecraft.server.CommandSetWorldSpawn;
+import net.minecraft.server.CommandSpawnpoint;
+import net.minecraft.server.CommandSpreadPlayers;
+import net.minecraft.server.CommandSummon;
+import net.minecraft.server.CommandTell;
+import net.minecraft.server.CommandTellRaw;
+import net.minecraft.server.CommandTestFor;
+import net.minecraft.server.CommandTestForBlock;
+import net.minecraft.server.CommandTime;
+import net.minecraft.server.CommandToggleDownfall;
+import net.minecraft.server.CommandTp;
+import net.minecraft.server.CommandWeather;
+import net.minecraft.server.CommandWhitelist;
+import net.minecraft.server.CommandXp;
 import net.minecraft.server.Convertable;
 import net.minecraft.server.ConvertProgressUpdater;
 import net.minecraft.server.CraftingManager;
@@ -77,6 +119,7 @@ import org.bukkit.configuration.ConfigurationSection;
 import org.bukkit.configuration.file.YamlConfiguration;
 import org.bukkit.configuration.serialization.ConfigurationSerialization;
 import org.bukkit.conversations.Conversable;
+import org.bukkit.craftbukkit.command.VanillaCommandWrapper;
 import org.bukkit.craftbukkit.help.SimpleHelpMap;
 import org.bukkit.craftbukkit.inventory.CraftFurnaceRecipe;
 import org.bukkit.craftbukkit.inventory.CraftInventoryCustom;
@@ -159,6 +202,7 @@ public final class CraftServer implements Server {
     protected final DedicatedPlayerList playerList;
     private final Map<String, World> worlds = new LinkedHashMap<String, World>();
     private YamlConfiguration configuration;
+    private YamlConfiguration commandsConfiguration;
     private final Yaml yaml = new Yaml(new SafeConstructor());
     private final Map<String, OfflinePlayer> offlinePlayers = new MapMaker().softValues().makeMap();
     private final AutoUpdater updater;
@@ -178,6 +222,7 @@ public final class CraftServer implements Server {
     public boolean playerCommandState;
     private boolean printSaveWarning;
     private CraftIconCache icon;
+    private boolean overrideAllCommandBlockCommands = false;
 
     private final class BooleanWrapper {
         private boolean value = true;
@@ -212,7 +257,27 @@ public final class CraftServer implements Server {
         configuration = YamlConfiguration.loadConfiguration(getConfigFile());
         configuration.options().copyDefaults(true);
         configuration.setDefaults(YamlConfiguration.loadConfiguration(getClass().getClassLoader().getResourceAsStream("configurations/bukkit.yml")));
+        ConfigurationSection legacyAlias = null;
+        if (!configuration.isString("aliases")) {
+            legacyAlias = configuration.getConfigurationSection("aliases");
+            configuration.set("aliases", "now-in-commands.yml");
+        }
         saveConfig();
+        if (getCommandsConfigFile().isFile()) {
+            legacyAlias = null;
+        }
+        commandsConfiguration = YamlConfiguration.loadConfiguration(getCommandsConfigFile());
+        commandsConfiguration.options().copyDefaults(true);
+        commandsConfiguration.setDefaults(YamlConfiguration.loadConfiguration(getClass().getClassLoader().getResourceAsStream("configurations/commands.yml")));
+        saveCommandsConfig();
+        if (legacyAlias != null) {
+            ConfigurationSection aliases = commandsConfiguration.createSection("aliases");
+            for (Entry<String, Object> entry : legacyAlias.getValues(true).entrySet()) {
+                aliases.set(entry.getKey(), entry.getValue());
+            }
+        }
+        saveCommandsConfig();
+        overrideAllCommandBlockCommands = commandsConfiguration.getStringList("command-block-overrides").contains("*");
         ((SimplePluginManager) pluginManager).useTimings(configuration.getBoolean("settings.plugin-profiling"));
         monsterSpawn = configuration.getInt("spawn-limits.monsters");
         animalSpawn = configuration.getInt("spawn-limits.animals");
@@ -235,10 +300,18 @@ public final class CraftServer implements Server {
         enablePlugins(PluginLoadOrder.STARTUP);
     }
 
+    public boolean getCommandBlockOverride(String command) {
+        return overrideAllCommandBlockCommands || commandsConfiguration.getStringList("command-block-overrides").contains(command);
+    }
+
     private File getConfigFile() {
         return (File) console.options.valueOf("bukkit-settings");
     }
 
+    private File getCommandsConfigFile() {
+        return (File) console.options.valueOf("commands-settings");
+    }
+
     private void saveConfig() {
         try {
             configuration.save(getConfigFile());
@@ -247,6 +320,14 @@ public final class CraftServer implements Server {
         }
     }
 
+    private void saveCommandsConfig() {
+        try {
+            commandsConfiguration.save(getCommandsConfigFile());
+        } catch (IOException ex) {
+            Logger.getLogger(CraftServer.class.getName()).log(Level.SEVERE, "Could not save " + getCommandsConfigFile(), ex);
+        }
+    }
+
     public void loadPlugins() {
         pluginManager.registerInterface(JavaPluginLoader.class);
 
@@ -283,6 +364,8 @@ public final class CraftServer implements Server {
         }
 
         if (type == PluginLoadOrder.POSTWORLD) {
+            commandMap.setFallbackCommands();
+            setVanillaCommands();
             commandMap.registerServerAliases();
             loadCustomPermissions();
             DefaultPermissions.registerCorePermissions();
@@ -294,6 +377,50 @@ public final class CraftServer implements Server {
         pluginManager.disablePlugins();
     }
 
+    private void setVanillaCommands() {
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandAchievement(), "/achievement give <stat_name> [player]"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandBan(), "/ban <playername> [reason]"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandBanIp(), "/ban-ip <ip-address|playername>"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandBanList(), "/banlist [ips]"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandClear(), "/clear <playername> [item] [metadata]"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandGamemodeDefault(), "/defaultgamemode <mode>"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandDeop(), "/deop <playername>"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandDifficulty(), "/difficulty <new difficulty>"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandEffect(), "/effect <player> <effect|clear> [seconds] [amplifier]"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandEnchant(), "/enchant <playername> <enchantment ID> [enchantment level]"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandGamemode(), "/gamemode <mode> [player]"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandGamerule(), "/gamerule <rulename> [true|false]"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandGive(), "/give <playername> <item> [amount] [metadata] [dataTag]"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandHelp(), "/help [page|commandname]"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandIdleTimeout(), "/setidletimeout <Minutes until kick>"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandKick(), "/kick <playername> [reason]"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandKill(), "/kill [playername]"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandList(), "/list"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandMe(), "/me <actiontext>"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandOp(), "/op <playername>"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandPardon(), "/pardon <playername>"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandPardonIP(), "/pardon-ip <ip-address>"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandPlaySound(), "/playsound <sound> <playername> [x] [y] [z] [volume] [pitch] [minimumVolume]"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandSay(), "/say <message>"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandScoreboard(), "/scoreboard"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandSeed(), "/seed"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandSetBlock(), "/setblock <x> <y> <z> <tilename> [datavalue] [oldblockHandling] [dataTag]"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandSetWorldSpawn(), "/setworldspawn [x] [y] [z]"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandSpawnpoint(), "/spawnpoint <playername> [x] [y] [z]"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandSpreadPlayers(), "/spreadplayers <x> <z> [spreadDistance] [maxRange] [respectTeams] <playernames>"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandSummon(), "/summon <EntityName> [x] [y] [z] [dataTag]"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandTp(), "/tp [player] <target>\n/tp [player] <x> <y> <z>"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandTell(), "/tell <playername> <message>"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandTellRaw(), "/tellraw <playername> <raw message>"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandTestFor(), "/testfor <playername | selector> [dataTag]"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandTestForBlock(), "/testforblock <x> <y> <z> <tilename> [datavalue] [dataTag]"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandTime(), "/time set <value>\n/time add <value>"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandToggleDownfall(), "/toggledownfall"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandWeather(), "/weather <clear/rain/thunder> [duration in seconds]"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandWhitelist(), "/whitelist (add|remove) <player>\n/whitelist (on|off|list|reload)"));
+        commandMap.register("minecraft", new VanillaCommandWrapper(new CommandXp(), "/xp <amount> [player]\n/xp <amount>L [player]"));
+    }
+
     private void loadPlugin(Plugin plugin) {
         try {
             pluginManager.enablePlugin(plugin);
@@ -555,6 +682,7 @@ public final class CraftServer implements Server {
 
     public void reload() {
         configuration = YamlConfiguration.loadConfiguration(getConfigFile());
+        commandsConfiguration = YamlConfiguration.loadConfiguration(getCommandsConfigFile());
         PropertyManager config = new PropertyManager(console.options);
 
         ((DedicatedServer) console).propertyManager = config;
@@ -601,6 +729,7 @@ public final class CraftServer implements Server {
         pluginManager.clearPlugins();
         commandMap.clearCommands();
         resetRecipes();
+        overrideAllCommandBlockCommands = commandsConfiguration.getStringList("command-block-overrides").contains("*");
 
         int pollCount = 0;
 
@@ -972,7 +1101,7 @@ public final class CraftServer implements Server {
     }
 
     public Map<String, String[]> getCommandAliases() {
-        ConfigurationSection section = configuration.getConfigurationSection("aliases");
+        ConfigurationSection section = commandsConfiguration.getConfigurationSection("aliases");
         Map<String, String[]> result = new LinkedHashMap<String, String[]>();
 
         if (section != null) {
diff --git a/src/main/java/org/bukkit/craftbukkit/Main.java b/src/main/java/org/bukkit/craftbukkit/Main.java
index 07c26f1f..8d127fbe 100644
--- a/src/main/java/org/bukkit/craftbukkit/Main.java
+++ b/src/main/java/org/bukkit/craftbukkit/Main.java
@@ -100,6 +100,12 @@ public class Main {
                         .defaultsTo(new File("bukkit.yml"))
                         .describedAs("Yml file");
 
+                acceptsAll(asList("C", "commands-settings"), "File for command settings")
+                        .withRequiredArg()
+                        .ofType(File.class)
+                        .defaultsTo(new File("commands.yml"))
+                        .describedAs("Yml file");
+
                 acceptsAll(asList("nojline"), "Disables jline and emulates the vanilla console");
 
                 acceptsAll(asList("noconsole"), "Disables the console");
diff --git a/src/main/java/org/bukkit/craftbukkit/command/CraftBlockCommandSender.java b/src/main/java/org/bukkit/craftbukkit/command/CraftBlockCommandSender.java
index f901d6c6..bdee7d73 100644
--- a/src/main/java/org/bukkit/craftbukkit/command/CraftBlockCommandSender.java
+++ b/src/main/java/org/bukkit/craftbukkit/command/CraftBlockCommandSender.java
@@ -1,5 +1,6 @@
 package org.bukkit.craftbukkit.command;
 
+import net.minecraft.server.ICommandListener;
 import net.minecraft.server.TileEntityCommandListener;
 
 import org.bukkit.block.Block;
@@ -37,4 +38,8 @@ public class CraftBlockCommandSender extends ServerCommandSender implements Bloc
     public void setOp(boolean value) {
         throw new UnsupportedOperationException("Cannot change operator status of a block");
     }
+
+    public ICommandListener getTileEntity() {
+        return commandBlock;
+    }
 }
diff --git a/src/main/java/org/bukkit/craftbukkit/command/VanillaCommandWrapper.java b/src/main/java/org/bukkit/craftbukkit/command/VanillaCommandWrapper.java
new file mode 100644
index 00000000..63bb9731
--- /dev/null
+++ b/src/main/java/org/bukkit/craftbukkit/command/VanillaCommandWrapper.java
@@ -0,0 +1,192 @@
+package org.bukkit.craftbukkit.command;
+
+import java.util.List;
+
+import net.minecraft.server.ChatMessage;
+import net.minecraft.server.CommandAbstract;
+import net.minecraft.server.CommandBlockListenerAbstract;
+import net.minecraft.server.CommandException;
+import net.minecraft.server.EntityMinecartCommandBlock;
+import net.minecraft.server.EntityMinecartCommandBlockListener;
+import net.minecraft.server.EntityPlayer;
+import net.minecraft.server.EnumChatFormat;
+import net.minecraft.server.ExceptionUsage;
+import net.minecraft.server.ICommandListener;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.PlayerSelector;
+import net.minecraft.server.RemoteControlCommandListener;
+import net.minecraft.server.TileEntityCommandListener;
+import net.minecraft.server.WorldServer;
+
+import org.apache.commons.lang.Validate;
+import org.apache.logging.log4j.Level;
+import org.bukkit.command.BlockCommandSender;
+import org.bukkit.command.CommandSender;
+import org.bukkit.command.ConsoleCommandSender;
+import org.bukkit.command.RemoteConsoleCommandSender;
+import org.bukkit.command.defaults.*;
+import org.bukkit.craftbukkit.CraftServer;
+import org.bukkit.craftbukkit.entity.CraftMinecartCommand;
+import org.bukkit.craftbukkit.entity.CraftPlayer;
+import org.bukkit.entity.Player;
+import org.bukkit.entity.minecart.CommandMinecart;
+
+public final class VanillaCommandWrapper extends VanillaCommand {
+    protected final CommandAbstract vanillaCommand;
+
+    public VanillaCommandWrapper(CommandAbstract vanillaCommand) {
+        super(vanillaCommand.c());
+        this.vanillaCommand = vanillaCommand;
+    }
+
+    public VanillaCommandWrapper(CommandAbstract vanillaCommand, String usage) {
+        super(vanillaCommand.c());
+        this.vanillaCommand = vanillaCommand;
+        this.description = "A Mojang provided command.";
+        this.usageMessage = usage;
+        this.setPermission("vanilla.command." + vanillaCommand.c());
+    }
+
+    @Override
+    public boolean execute(CommandSender sender, String commandLabel, String[] args) {
+        if (!testPermission(sender)) return true;
+
+        ICommandListener icommandlistener = getListener(sender);
+        // Some commands use the worldserver variable but we leave it full of null values,
+        // so we must temporarily populate it with the world of the commandsender
+        WorldServer[] prev = MinecraftServer.getServer().worldServer;
+        MinecraftServer.getServer().worldServer = new WorldServer[]{(WorldServer) icommandlistener.getWorld()};
+        try {
+            vanillaCommand.b(icommandlistener, args);
+        } catch (ExceptionUsage exceptionusage) {
+            ChatMessage chatmessage = new ChatMessage("commands.generic.usage", new Object[] {new ChatMessage(exceptionusage.getMessage(), exceptionusage.a())});
+            chatmessage.b().setColor(EnumChatFormat.RED);
+            icommandlistener.sendMessage(chatmessage);
+        } catch (CommandException commandexception) {
+            ChatMessage chatmessage = new ChatMessage(commandexception.getMessage(), commandexception.a());
+            chatmessage.b().setColor(EnumChatFormat.RED);
+            icommandlistener.sendMessage(chatmessage);
+        } finally {
+            MinecraftServer.getServer().worldServer = prev;
+        }
+        return true;
+    }
+
+    @Override
+    public List<String> tabComplete(CommandSender sender, String alias, String[] args) throws IllegalArgumentException {
+        Validate.notNull(sender, "Sender cannot be null");
+        Validate.notNull(args, "Arguments cannot be null");
+        Validate.notNull(alias, "Alias cannot be null");
+        return (List<String>) vanillaCommand.a(getListener(sender), args);
+    }
+
+    public final int dispatchVanillaCommandBlock(CommandBlockListenerAbstract icommandlistener, String s) {
+        // Copied from net.minecraft.server.CommandHandler
+        s = s.trim();
+        if (s.startsWith("/")) {
+            s = s.substring(1);
+        }
+        String as[] = s.split(" ");
+        as = dropFirstArgument(as);
+        int i = getPlayerListSize(as);
+        int j = 0;
+        // Some commands use the worldserver variable but we leave it full of null values,
+        // so we must temporarily populate it with the world of the commandsender
+        WorldServer[] prev = MinecraftServer.getServer().worldServer;
+        MinecraftServer.getServer().worldServer = new WorldServer[]{(WorldServer) icommandlistener.getWorld()};
+        try {
+            if (vanillaCommand.a(icommandlistener)) {
+                if (i > -1) {
+                    EntityPlayer aentityplayer[] = PlayerSelector.getPlayers(icommandlistener, as[i]);
+                    String s2 = as[i];
+                    EntityPlayer aentityplayer1[] = aentityplayer;
+                    int k = aentityplayer1.length;
+                    for (int l = 0; l < k;) {
+                        EntityPlayer entityplayer = aentityplayer1[l];
+                        as[i] = entityplayer.getName();
+                        try {
+                            vanillaCommand.b(icommandlistener, as);
+                            j++;
+                            continue;
+                        } catch (CommandException commandexception1) {
+                            ChatMessage chatmessage4 = new ChatMessage(commandexception1.getMessage(), commandexception1.a());
+                            chatmessage4.b().setColor(EnumChatFormat.RED);
+                            icommandlistener.sendMessage(chatmessage4);
+                            l++;
+                        }
+                    }
+
+                    as[i] = s2;
+                } else {
+                    vanillaCommand.b(icommandlistener, as);
+                    j++;
+                }
+            } else {
+                ChatMessage chatmessage = new ChatMessage("commands.generic.permission", new Object[0]);
+                chatmessage.b().setColor(EnumChatFormat.RED);
+                icommandlistener.sendMessage(chatmessage);
+            }
+        } catch (ExceptionUsage exceptionusage) {
+            ChatMessage chatmessage1 = new ChatMessage("commands.generic.usage", new Object[] { new ChatMessage(exceptionusage.getMessage(), exceptionusage.a()) });
+            chatmessage1.b().setColor(EnumChatFormat.RED);
+            icommandlistener.sendMessage(chatmessage1);
+        } catch (CommandException commandexception) {
+            ChatMessage chatmessage2 = new ChatMessage(commandexception.getMessage(), commandexception.a());
+            chatmessage2.b().setColor(EnumChatFormat.RED);
+            icommandlistener.sendMessage(chatmessage2);
+        } catch (Throwable throwable) {
+            ChatMessage chatmessage3 = new ChatMessage("commands.generic.exception", new Object[0]);
+            chatmessage3.b().setColor(EnumChatFormat.RED);
+            icommandlistener.sendMessage(chatmessage3);
+            if(icommandlistener instanceof TileEntityCommandListener) {
+                TileEntityCommandListener listener = (TileEntityCommandListener) icommandlistener;
+                MinecraftServer.av().log(Level.WARN, String.format("CommandBlock at (%d,%d,%d) failed to handle command", listener.getChunkCoordinates().x, listener.getChunkCoordinates().y, listener.getChunkCoordinates().z), throwable);
+            } else if (icommandlistener instanceof EntityMinecartCommandBlockListener) {
+                EntityMinecartCommandBlockListener listener = (EntityMinecartCommandBlockListener) icommandlistener;
+                MinecraftServer.av().log(Level.WARN, String.format("MinecartCommandBlock at (%d,%d,%d) failed to handle command", listener.getChunkCoordinates().x, listener.getChunkCoordinates().y, listener.getChunkCoordinates().z), throwable);
+            } else {
+                MinecraftServer.av().log(Level.WARN, String.format("Unknown CommandBlock failed to handle command"), throwable);
+            }
+        } finally {
+            MinecraftServer.getServer().worldServer = prev;
+        }
+        return j;
+    }
+
+    private ICommandListener getListener(CommandSender sender) {
+        if (sender instanceof Player) {
+            return ((CraftPlayer) sender).getHandle();
+        }
+        if (sender instanceof BlockCommandSender) {
+            return ((CraftBlockCommandSender) sender).getTileEntity();
+        }
+        if (sender instanceof CommandMinecart) {
+            return ((EntityMinecartCommandBlock) ((CraftMinecartCommand) sender).getHandle()).e();
+        }
+        if (sender instanceof RemoteConsoleCommandSender) {
+            return RemoteControlCommandListener.instance;
+        }
+        if (sender instanceof ConsoleCommandSender) {
+            return ((CraftServer) sender.getServer()).getServer();
+        }
+        return null;
+    }
+
+    private int getPlayerListSize(String as[]) {
+        for (int i = 0; i < as.length; i++) {
+            if (vanillaCommand.a(as, i) && PlayerSelector.isList(as[i])) {
+                return i;
+            }
+        }
+        return -1;
+    }
+
+    private String[] dropFirstArgument(String as[]) {
+        String as1[] = new String[as.length - 1];
+        for (int i = 1; i < as.length; i++) {
+            as1[i - 1] = as[i];
+        }
+
+        return as1;
+    }
+}
diff --git a/src/main/java/org/bukkit/craftbukkit/help/SimpleHelpMap.java b/src/main/java/org/bukkit/craftbukkit/help/SimpleHelpMap.java
index 27f9ce9d..7dd5afef 100644
--- a/src/main/java/org/bukkit/craftbukkit/help/SimpleHelpMap.java
+++ b/src/main/java/org/bukkit/craftbukkit/help/SimpleHelpMap.java
@@ -3,10 +3,12 @@ package org.bukkit.craftbukkit.help;
 import com.google.common.base.Predicate;
 import com.google.common.base.Predicates;
 import com.google.common.collect.Collections2;
+
 import org.bukkit.command.*;
 import org.bukkit.command.defaults.BukkitCommand;
 import org.bukkit.command.defaults.VanillaCommand;
 import org.bukkit.craftbukkit.CraftServer;
+import org.bukkit.craftbukkit.command.VanillaCommandWrapper;
 import org.bukkit.help.*;
 
 import java.util.*;
@@ -131,19 +133,13 @@ public class SimpleHelpMap implements HelpMap {
                 continue;
             }
             for (String alias : command.getAliases()) {
-                if (!helpTopics.containsKey("/" + alias)) {
+                // Only register if this command owns the alias
+                if (server.getCommandMap().getCommand(alias) == command) {
                     addTopic(new CommandAliasHelpTopic("/" + alias, "/" + command.getLabel(), this));
                 }
             }
         }
 
-        // Initialize help topics from the server's fallback commands
-        for (VanillaCommand command : server.getCommandMap().getFallbackCommands()) {
-            if (!commandInIgnoredPlugin(command, ignoredPlugins)) {
-                addTopic(new GenericCommandHelpTopic(command));
-            }
-        }
-
         // Add alias sub-index
         Collection<HelpTopic> filteredTopics = Collections2.filter(helpTopics.values(), Predicates.instanceOf(CommandAliasHelpTopic.class));
         if (!filteredTopics.isEmpty()) {
@@ -153,7 +149,6 @@ public class SimpleHelpMap implements HelpMap {
         // Initialize plugin-level sub-topics
         Map<String, Set<HelpTopic>> pluginIndexes = new HashMap<String, Set<HelpTopic>>();
         fillPluginIndexes(pluginIndexes, server.getCommandMap().getCommands());
-        fillPluginIndexes(pluginIndexes, server.getCommandMap().getFallbackCommands());
 
         for (Map.Entry<String, Set<HelpTopic>> entry : pluginIndexes.entrySet()) {
             addTopic(new IndexHelpTopic(entry.getKey(), "All commands for " + entry.getKey(), null, entry.getValue(), "Below is a list of all " + entry.getKey() + " commands:"));
@@ -186,6 +181,9 @@ public class SimpleHelpMap implements HelpMap {
     }
 
     private String getCommandPluginName(Command command) {
+        if (command instanceof VanillaCommandWrapper) {
+            return "Minecraft";
+        }
         if (command instanceof BukkitCommand || command instanceof VanillaCommand) {
             return "Bukkit";
         }