signature: configuration options

src/main/java/de/bixilon/minosoft/config/profile/profiles/connection/ConnectionProfile.kt

@@ -18,6 +18,7 @@ import de.bixilon.minosoft.config.profile.ProfileManager
 import de.bixilon.minosoft.config.profile.profiles.Profile
 import de.bixilon.minosoft.config.profile.profiles.connection.ConnectionProfileManager.delegate
 import de.bixilon.minosoft.config.profile.profiles.connection.ConnectionProfileManager.latestVersion
+import de.bixilon.minosoft.config.profile.profiles.connection.signature.SignatureC
 import de.bixilon.minosoft.config.profile.profiles.connection.skin.SkinC
 import de.bixilon.minosoft.data.entities.entities.player.Arms
 
@@ -55,6 +56,7 @@ class ConnectionProfile(
     var mainArm by delegate(Arms.RIGHT)
 
     val skin = SkinC()
+    val signature = SignatureC()
 
     var autoRespawn by delegate(false)
 

src/main/java/de/bixilon/minosoft/config/profile/profiles/connection/signature/SignatureC.kt

@@ -0,0 +1,34 @@
+/*
+ * Minosoft
+ * Copyright (C) 2020-2022 Moritz Zwerger
+ *
+ * This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * This software is not affiliated with Mojang AB, the original developer of Minecraft.
+ */
+
+package de.bixilon.minosoft.config.profile.profiles.connection.signature
+
+import de.bixilon.minosoft.config.profile.profiles.connection.ConnectionProfileManager.delegate
+
+class SignatureC {
+
+    /**
+     * Hides all bad signed messages
+     */
+    val ignoreBadSignedMessages by delegate(false)
+
+    /**
+     * Does not fetch/load the private key, thus forcing the unsigned mode
+     */
+    val disableKeys by delegate(false)
+
+    /**
+     * Send commands as message
+     */
+    val sendCommandAsMessage by delegate(false)
+}

src/main/java/de/bixilon/minosoft/protocol/network/connection/play/ConnectionUtil.kt

@@ -94,7 +94,7 @@ class ConnectionUtil(
 
     @Deprecated("message will re removed as soon as brigadier is fully implemented")
     fun sendCommand(message: String, stack: CommandStack) {
-        if (!connection.version.requiresSignedChat) {
+        if (!connection.version.requiresSignedChat || connection.profiles.connection.signature.sendCommandAsMessage) {
             return sendChatMessage(message)
         }
         TODO("Can not send signed chat!")

src/main/java/de/bixilon/minosoft/protocol/network/connection/play/PlayConnection.kt

@@ -185,7 +185,7 @@ class PlayConnection(
                 Log.log(LogMessageType.ASSETS, LogLevels.INFO) { "Assets verified!" }
             }
             var privateKey: PlayerPrivateKey? = null
-            if (version.requiresSignedChat) {
+            if (version.requiresSignedChat && !profiles.connection.signature.disableKeys) {
                 taskWorker += WorkerTask(optional = true) {
                     val minecraftKey = account.fetchKey(latch) ?: return@WorkerTask
                     minecraftKey.requireSignature(account.uuid)

src/main/java/de/bixilon/minosoft/protocol/packets/s2c/play/chat/SignedChatMessageS2CP.kt

@@ -110,6 +110,14 @@ class SignedChatMessageS2CP(buffer: PlayInByteBuffer) : PlayS2CPacket {
     }
 
     override fun handle(connection: PlayConnection) {
+        if (message.error != null) {
+            // failed
+            Log.log(LogMessageType.CHAT_IN, LogLevels.WARN) { "Signature error: ${message.error}: ${message.text}" }
+
+            if (connection.profiles.connection.signature.ignoreBadSignedMessages) {
+                return
+            }
+        }
         connection.fireEvent(ChatMessageReceiveEvent(connection, EventInitiators.SERVER, message))
     }