feat(Messenger): Add Remove Meta AI patch (#4945)

Author: drobotk

extensions/messenger/build.gradle.kts

@@ -0,0 +1,3 @@
+dependencies {
+    compileOnly(project(":extensions:shared:library"))
+}

extensions/messenger/src/main/AndroidManifest.xml

@@ -0,0 +1 @@
+<manifest/>

extensions/messenger/src/main/java/app/revanced/extension/messenger/metaai/RemoveMetaAIPatch.java

@@ -0,0 +1,15 @@
+package app.revanced.extension.messenger.metaai;
+
+@SuppressWarnings("unused")
+public class RemoveMetaAIPatch {
+    public static boolean overrideConfigBool(long id, boolean value) {
+        // It seems like all configs starting with 363219 are related to Meta AI. 
+        // A list of specific ones that need disabling would probably be better,
+        // but these config numbers seem to change slightly with each update.
+        // These first 6 digits don't though.
+        if (Long.toString(id).startsWith("363219"))
+            return false;
+
+        return value;
+    }
+}

patches/api/patches.api

@@ -284,6 +284,14 @@ public final class app/revanced/patches/messenger/inputfield/DisableTypingIndica
 	public static final fun getDisableTypingIndicatorPatch ()Lapp/revanced/patcher/patch/BytecodePatch;
 }
 
+public final class app/revanced/patches/messenger/metaai/RemoveMetaAIPatchKt {
+	public static final fun getRemoveMetaAIPatch ()Lapp/revanced/patcher/patch/BytecodePatch;
+}
+
+public final class app/revanced/patches/messenger/misc/extension/ExtensionPatchKt {
+	public static final fun getSharedExtensionPatch ()Lapp/revanced/patcher/patch/BytecodePatch;
+}
+
 public final class app/revanced/patches/messenger/navbar/RemoveMetaAITabPatchKt {
 	public static final fun getRemoveMetaAITabPatch ()Lapp/revanced/patcher/patch/BytecodePatch;
 }

patches/src/main/kotlin/app/revanced/patches/messenger/metaai/Fingerprints.kt

@@ -0,0 +1,14 @@
+package app.revanced.patches.messenger.metaai
+
+import com.android.tools.smali.dexlib2.Opcode
+import app.revanced.patcher.fingerprint
+
+internal val getMobileConfigBoolFingerprint = fingerprint {
+    parameters("J")
+    returns("Z")
+    opcodes(Opcode.RETURN) 
+    custom { method, classDef ->
+        method.implementation ?: return@custom false  // unsure if this is necessary
+        classDef.interfaces.contains("Lcom/facebook/mobileconfig/factory/MobileConfigUnsafeContext;")
+    }
+}

patches/src/main/kotlin/app/revanced/patches/messenger/metaai/RemoveMetaAIPatch.kt

@@ -0,0 +1,35 @@
+package app.revanced.patches.messenger.metaai
+
+import app.revanced.patcher.extensions.InstructionExtensions.addInstructions
+import app.revanced.patcher.extensions.InstructionExtensions.getInstruction
+import app.revanced.patcher.patch.bytecodePatch
+import app.revanced.patches.messenger.misc.extension.sharedExtensionPatch
+import com.android.tools.smali.dexlib2.iface.instruction.OneRegisterInstruction
+
+private const val EXTENSION_CLASS_DESCRIPTOR = "Lapp/revanced/extension/messenger/metaai/RemoveMetaAIPatch;"
+
+@Suppress("unused")
+val removeMetaAIPatch = bytecodePatch(
+    name = "Remove Meta AI",
+    description = "Removes UI elements related to Meta AI."
+) {
+    compatibleWith("com.facebook.orca")
+
+    dependsOn(sharedExtensionPatch)
+
+    execute {
+        getMobileConfigBoolFingerprint.method.apply {
+            val returnIndex = getMobileConfigBoolFingerprint.patternMatch!!.startIndex
+            val returnRegister = getInstruction<OneRegisterInstruction>(returnIndex).registerA
+
+            addInstructions(
+                returnIndex,
+                """
+                    invoke-static {p1, p2, v$returnRegister}, $EXTENSION_CLASS_DESCRIPTOR->overrideConfigBool(JZ)Z
+                    
+                    move-result v$returnRegister
+                """
+            )
+        }
+    }
+}

patches/src/main/kotlin/app/revanced/patches/messenger/misc/extension/ExtensionPatch.kt

@@ -0,0 +1,5 @@
+package app.revanced.patches.messenger.misc.extension
+
+import app.revanced.patches.shared.misc.extension.sharedExtensionPatch
+
+val sharedExtensionPatch = sharedExtensionPatch("messenger", mainActivityOnCreateHook)

patches/src/main/kotlin/app/revanced/patches/messenger/misc/extension/Hooks.kt

@@ -0,0 +1,7 @@
+package app.revanced.patches.messenger.misc.extension
+
+import app.revanced.patches.shared.misc.extension.extensionHook
+
+internal val mainActivityOnCreateHook = extensionHook {
+    strings("MainActivity_onCreate_begin")
+}

patches/src/main/kotlin/app/revanced/patches/messenger/navbar/Fingerprints.kt

@@ -1,25 +1,12 @@
 package app.revanced.patches.messenger.navbar
 
 import app.revanced.patcher.patch.bytecodePatch
-import app.revanced.patcher.extensions.InstructionExtensions.getInstruction
-import app.revanced.patcher.extensions.InstructionExtensions.replaceInstruction
-import com.android.tools.smali.dexlib2.iface.instruction.OneRegisterInstruction
+import app.revanced.patches.messenger.metaai.removeMetaAIPatch
 
+@Deprecated("Superseded by removeMetaAIPatch", ReplaceWith("removeMetaAIPatch"))
 @Suppress("unused")
 val removeMetaAITabPatch = bytecodePatch(
-    name = "Remove Meta AI tab",
     description = "Removes the 'Meta AI' tab from the navbar.",
 ) {
-    compatibleWith("com.facebook.orca")
-
-    execute {
-        createTabConfigurationFingerprint.let {
-            val moveResultIndex = it.patternMatch!!.startIndex + 1
-            val enabledRegister = it.method.getInstruction<OneRegisterInstruction>(moveResultIndex).registerA
-            it.method.replaceInstruction(
-                moveResultIndex,
-                "const/4 v$enabledRegister, 0x0"
-            )
-        }
-    }
+    dependsOn(removeMetaAIPatch)
 }