From 0e73fdbf726d92ed9cfcc951ae91ac6e5cffea8b Mon Sep 17 00:00:00 2001 From: Mariell Date: Tue, 3 Nov 2020 22:30:15 +0100 Subject: [PATCH] OBFHELPERS (#4733) --- ...-allowed-colored-signs-to-be-created.patch | 19 +++++++++++++++---- .../0327-Limit-Client-Sign-length-more.patch | 9 ++++----- ...ld-Difficulty-Remembering-Difficulty.patch | 4 ++-- .../0549-Brand-support.patch | 8 ++++---- 4 files changed, 25 insertions(+), 15 deletions(-) diff --git a/Spigot-Server-Patches/0209-Fix-exploit-that-allowed-colored-signs-to-be-created.patch b/Spigot-Server-Patches/0209-Fix-exploit-that-allowed-colored-signs-to-be-created.patch index ab46fed9a0..c1a13dd36e 100644 --- a/Spigot-Server-Patches/0209-Fix-exploit-that-allowed-colored-signs-to-be-created.patch +++ b/Spigot-Server-Patches/0209-Fix-exploit-that-allowed-colored-signs-to-be-created.patch @@ -5,16 +5,27 @@ Subject: [PATCH] Fix exploit that allowed colored signs to be created diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java -index b92449c7035ebb330eb3aaa48e91a6d0b3873c5c..e72a519645e9383c989fc3ad8059c1c88c1b6382 100644 +index 453128ea031cea72d3fd57fb64938bd20aa1e7f3..32076076b39b6c408b0ee95afb7ef11b71e373dc 100644 --- a/src/main/java/net/minecraft/server/PlayerConnection.java +++ b/src/main/java/net/minecraft/server/PlayerConnection.java -@@ -2631,7 +2631,8 @@ public class PlayerConnection implements PacketListenerPlayIn { +@@ -2631,7 +2631,7 @@ public class PlayerConnection implements PacketListenerPlayIn { String[] lines = new String[4]; for (int i = 0; i < list.size(); ++i) { - lines[i] = EnumChatFormat.a(new ChatComponentText(EnumChatFormat.a((String) list.get(i))).getString()); -+ // Paper TODO(Proximyst): Add obfhelper when 1.16.4 runs -+ lines[i] = SharedConstants.a(list.get(i)); // Paper - Replaced with anvil color stripping method to stop exploits that allow colored signs to be created. ++ lines[i] = SharedConstants.filterAllowedChatCharacters(list.get(i)); // Paper - Replaced with anvil color stripping method to stop exploits that allow colored signs to be created. } SignChangeEvent event = new SignChangeEvent((org.bukkit.craftbukkit.block.CraftBlock) player.getWorld().getBlockAt(x, y, z), this.server.getPlayer(this.player), lines); this.server.getPluginManager().callEvent(event); +diff --git a/src/main/java/net/minecraft/server/SharedConstants.java b/src/main/java/net/minecraft/server/SharedConstants.java +index 9663e8c10662c9660964afda62d8a65812fae69d..470690dbe19db1622eca44f6801ece37d7ad7426 100644 +--- a/src/main/java/net/minecraft/server/SharedConstants.java ++++ b/src/main/java/net/minecraft/server/SharedConstants.java +@@ -19,6 +19,7 @@ public class SharedConstants { + return c0 != 167 && c0 >= ' ' && c0 != 127; + } + ++ public static String filterAllowedChatCharacters(String input) { return a(input); } // Paper - OBFHELPER + public static String a(String s) { + StringBuilder stringbuilder = new StringBuilder(); + char[] achar = s.toCharArray(); diff --git a/Spigot-Server-Patches/0327-Limit-Client-Sign-length-more.patch b/Spigot-Server-Patches/0327-Limit-Client-Sign-length-more.patch index ebb82e72fc..cf9c28cccc 100644 --- a/Spigot-Server-Patches/0327-Limit-Client-Sign-length-more.patch +++ b/Spigot-Server-Patches/0327-Limit-Client-Sign-length-more.patch @@ -22,7 +22,7 @@ it only impacts data sent from the client. Set -DPaper.maxSignLength=XX to change limit or -1 to disable diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java -index b1faac1e2465cdae624ca5d8d999db3cdedfe3de..fccde94e0ccd0964a051383bd1fc38d7b5967cd4 100644 +index aca3aae216308544e527a6325b9a02a9a05c2551..040ed989dcfc59c8cb58d81070ea9c6cd493e47d 100644 --- a/src/main/java/net/minecraft/server/PlayerConnection.java +++ b/src/main/java/net/minecraft/server/PlayerConnection.java @@ -110,6 +110,7 @@ public class PlayerConnection implements PacketListenerPlayIn { @@ -33,10 +33,11 @@ index b1faac1e2465cdae624ca5d8d999db3cdedfe3de..fccde94e0ccd0964a051383bd1fc38d7 private static final long KEEPALIVE_LIMIT = Long.getLong("paper.playerconnection.keepalive", 30) * 1000; // Paper - provide property to set keepalive limit public PlayerConnection(MinecraftServer minecraftserver, NetworkManager networkmanager, EntityPlayer entityplayer) { -@@ -2696,8 +2697,18 @@ public class PlayerConnection implements PacketListenerPlayIn { +@@ -2696,7 +2697,17 @@ public class PlayerConnection implements PacketListenerPlayIn { String[] lines = new String[4]; for (int i = 0; i < list.size(); ++i) { +- lines[i] = SharedConstants.filterAllowedChatCharacters(list.get(i)); // Paper - Replaced with anvil color stripping method to stop exploits that allow colored signs to be created. + // Paper start - cap line length - modified clients can send longer data than normal + String currentLine = list.get(i); + if (MAX_SIGN_LINE_LENGTH > 0 && currentLine.length() > MAX_SIGN_LINE_LENGTH) { @@ -47,9 +48,7 @@ index b1faac1e2465cdae624ca5d8d999db3cdedfe3de..fccde94e0ccd0964a051383bd1fc38d7 + } + } + // Paper end - // Paper TODO(Proximyst): Add obfhelper when 1.16.4 runs -- lines[i] = SharedConstants.a(list.get(i)); // Paper - Replaced with anvil color stripping method to stop exploits that allow colored signs to be created. -+ lines[i] = SharedConstants.a(currentLine); // Paper - Replaced with anvil color stripping method to stop exploits that allow colored signs to be created. ++ lines[i] = SharedConstants.filterAllowedChatCharacters(currentLine); // Paper - Replaced with anvil color stripping method to stop exploits that allow colored signs to be created. } SignChangeEvent event = new SignChangeEvent((org.bukkit.craftbukkit.block.CraftBlock) player.getWorld().getBlockAt(x, y, z), this.server.getPlayer(this.player), lines); this.server.getPluginManager().callEvent(event); diff --git a/Spigot-Server-Patches/0511-Fix-Per-World-Difficulty-Remembering-Difficulty.patch b/Spigot-Server-Patches/0511-Fix-Per-World-Difficulty-Remembering-Difficulty.patch index fa2eb862d8..91c366b18c 100644 --- a/Spigot-Server-Patches/0511-Fix-Per-World-Difficulty-Remembering-Difficulty.patch +++ b/Spigot-Server-Patches/0511-Fix-Per-World-Difficulty-Remembering-Difficulty.patch @@ -63,10 +63,10 @@ index 1175f23558fe694bfb77dd478b0a3ec15109dd9b..1439b874b9a825ea605c15aaacaecaed } diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java -index bf052016d7ca4d2012bafe86909f4d581498d403..0c1b4932f14e58bc6d418cf20f23e7915525430b 100644 +index d224bdc5bf05e3688467dab1dd22f722445ebc6a..3c989cdbbdf95f4629445a6b4d22a8ad8dcc958a 100644 --- a/src/main/java/net/minecraft/server/PlayerConnection.java +++ b/src/main/java/net/minecraft/server/PlayerConnection.java -@@ -2873,7 +2873,7 @@ public class PlayerConnection implements PacketListenerPlayIn { +@@ -2872,7 +2872,7 @@ public class PlayerConnection implements PacketListenerPlayIn { public void a(PacketPlayInDifficultyChange packetplayindifficultychange) { PlayerConnectionUtils.ensureMainThread(packetplayindifficultychange, this, this.player.getWorldServer()); if (this.player.k(2) || this.isExemptPlayer()) { diff --git a/Spigot-Server-Patches/0549-Brand-support.patch b/Spigot-Server-Patches/0549-Brand-support.patch index 41b563f963..5c19e97bd0 100644 --- a/Spigot-Server-Patches/0549-Brand-support.patch +++ b/Spigot-Server-Patches/0549-Brand-support.patch @@ -5,7 +5,7 @@ Subject: [PATCH] Brand support diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java -index 3dc5b0279f4c50138e7f85b8aff182b6ed2e2c61..f6c04946aa752b9db4e0c81dbb74334618c955ad 100644 +index 789a41b900640add7adbc216c65a4133e54e88b0..72a3f0219c5c29229d75357db37d569615e8e43d 100644 --- a/src/main/java/net/minecraft/server/PlayerConnection.java +++ b/src/main/java/net/minecraft/server/PlayerConnection.java @@ -5,6 +5,7 @@ import com.google.common.primitives.Doubles; @@ -25,7 +25,7 @@ index 3dc5b0279f4c50138e7f85b8aff182b6ed2e2c61..f6c04946aa752b9db4e0c81dbb743346 public PlayerConnection(MinecraftServer minecraftserver, NetworkManager networkmanager, EntityPlayer entityplayer) { this.minecraftServer = minecraftserver; this.networkManager = networkmanager; -@@ -2832,6 +2835,8 @@ public class PlayerConnection implements PacketListenerPlayIn { +@@ -2831,6 +2834,8 @@ public class PlayerConnection implements PacketListenerPlayIn { private static final MinecraftKey CUSTOM_REGISTER = new MinecraftKey("register"); private static final MinecraftKey CUSTOM_UNREGISTER = new MinecraftKey("unregister"); @@ -34,7 +34,7 @@ index 3dc5b0279f4c50138e7f85b8aff182b6ed2e2c61..f6c04946aa752b9db4e0c81dbb743346 @Override public void a(PacketPlayInCustomPayload packetplayincustompayload) { PlayerConnectionUtils.ensureMainThread(packetplayincustompayload, this, this.player.getWorldServer()); -@@ -2859,6 +2864,16 @@ public class PlayerConnection implements PacketListenerPlayIn { +@@ -2858,6 +2863,16 @@ public class PlayerConnection implements PacketListenerPlayIn { try { byte[] data = new byte[packetplayincustompayload.data.readableBytes()]; packetplayincustompayload.data.readBytes(data); @@ -51,7 +51,7 @@ index 3dc5b0279f4c50138e7f85b8aff182b6ed2e2c61..f6c04946aa752b9db4e0c81dbb743346 server.getMessenger().dispatchIncomingMessage(player.getBukkitEntity(), packetplayincustompayload.tag.toString(), data); } catch (Exception ex) { PlayerConnection.LOGGER.error("Couldn\'t dispatch custom payload", ex); -@@ -2868,6 +2883,12 @@ public class PlayerConnection implements PacketListenerPlayIn { +@@ -2867,6 +2882,12 @@ public class PlayerConnection implements PacketListenerPlayIn { }