refactor(microg-support): share code between music-microg-support patch

src/main/kotlin/app/revanced/patches/music/misc/microg/patch/bytecode/MusicMicroGBytecodePatch.kt

@@ -1,37 +1,27 @@
 package app.revanced.patches.music.misc.microg.patch.bytecode
 
-import app.revanced.extensions.equalsAny
 import app.revanced.patcher.annotation.Description
 import app.revanced.patcher.annotation.Name
 import app.revanced.patcher.annotation.Version
 import app.revanced.patcher.data.impl.BytecodeData
-import app.revanced.patcher.extensions.addInstructions
-import app.revanced.patcher.extensions.replaceInstruction
+import app.revanced.patcher.patch.PatchResultSuccess
 import app.revanced.patcher.patch.annotations.DependsOn
 import app.revanced.patcher.patch.annotations.Patch
 import app.revanced.patcher.patch.impl.BytecodePatch
-import app.revanced.patcher.patch.PatchResult
-import app.revanced.patcher.patch.PatchResultSuccess
-import app.revanced.patcher.util.proxy.mutableTypes.MutableClass
 import app.revanced.patches.music.misc.microg.annotations.MusicMicroGPatchCompatibility
-import app.revanced.patches.music.misc.microg.patch.resource.MusicMicroGResourcePatch
-import app.revanced.patches.youtube.misc.microg.patch.resource.enum.StringReplaceMode
-import app.revanced.patches.music.misc.microg.shared.Constants.BASE_MICROG_PACKAGE_NAME
-import app.revanced.patches.music.misc.microg.shared.Constants.REVANCED_MUSIC_PACKAGE_NAME
 import app.revanced.patches.music.misc.microg.fingerprints.*
-import org.jf.dexlib2.Opcode
-import org.jf.dexlib2.builder.MutableMethodImplementation
-import org.jf.dexlib2.builder.instruction.BuilderInstruction21c
-import org.jf.dexlib2.iface.instruction.formats.Instruction21c
-import org.jf.dexlib2.iface.reference.StringReference
-import org.jf.dexlib2.immutable.reference.ImmutableStringReference
+import app.revanced.patches.music.misc.microg.patch.resource.MusicMicroGResourcePatch
+import app.revanced.patches.music.misc.microg.shared.Constants.MUSIC_PACKAGE_NAME
+import app.revanced.patches.music.misc.microg.shared.Constants.REVANCED_MUSIC_PACKAGE_NAME
+import app.revanced.patches.youtube.misc.microg.shared.Constants
+import app.revanced.util.microg.MicroGBytecodeHelper
 
 @Patch
 @DependsOn([MusicMicroGResourcePatch::class])
 @Name("music-microg-support")
 @Description("Allows YouTube Music ReVanced to run without root and under a different package name.")
 @MusicMicroGPatchCompatibility
-@Version("0.0.1")
+@Version("0.0.2")
 class MusicMicroGBytecodePatch : BytecodePatch(
     listOf(
         ServiceCheckFingerprint,
@@ -42,130 +32,34 @@ class MusicMicroGBytecodePatch : BytecodePatch(
         PrimeFingerprint,
     )
 ) {
-    override fun execute(data: BytecodeData): PatchResult {
-        disablePlayServiceChecks()
-        data.classes.forEach { classDef ->
-            var proxiedClass: MutableClass? = null
-
-            classDef.methods.forEach methodLoop@{ method ->
-                val implementation = method.implementation ?: return@methodLoop
-
-                var proxiedImplementation: MutableMethodImplementation? = null
-
-                implementation.instructions.forEachIndexed { i, instruction ->
-                    if (instruction.opcode != Opcode.CONST_STRING) return@forEachIndexed
-
-                    val stringValue = ((instruction as Instruction21c).reference as StringReference).string
-
-                    val replaceMode = if (stringValue.equalsAny(
-                            "com.google.android.gms",
-                            "com.google.android.gms.chimera",
-                            "com.google.android.c2dm.intent.REGISTER",
-                            "com.google.android.c2dm.permission.SEND",
-                            "com.google.iid.TOKEN_REQUEST",
-                            "com.google",
-                            "com.google.android.gms.chimera.GmsIntentOperationService",
-                            "com.google.android.gms.phenotype.internal.IPhenotypeCallbacks",
-                            "com.google.android.gms.phenotype.internal.IPhenotypeService",
-                            "com.google.android.gms.phenotype.service.START",
-                            "com.google.android.gms.phenotype.PACKAGE_NAME",
-                            "com.google.android.gms.phenotype.UPDATE",
-                            "com.google.android.gms.phenotype",
-                            "com.google.android.gms.auth.accounts",
-                            "com.google.android.c2dm.intent.REGISTRATION",
-                            "com.google.android.gsf.action.GET_GLS",
-                            "com.google.android.gsf.login",
-                            "content://com.google.settings/partner",
-                            "content://com.google.android.gms.phenotype/",
-                            "content://com.google.android.gsf.gservices",
-                            "content://com.google.android.gsf.gservices/prefix",
-                            "com.google.android.c2dm.intent.RECEIVE"
-                        )
-                    ) {
-                        StringReplaceMode.REPLACE_WITH_MICROG
-                    } else if (stringValue.equalsAny(
-                            "com.google.android.apps.youtube.music.SuggestionsProvider", "com.google.android.apps.youtube.music.fileprovider"
-                        )
-                    ) {
-                        StringReplaceMode.REPLACE_WITH_REVANCED
-                    } else {
-                        StringReplaceMode.DO_NOT_REPLACE
-                    }
-
-                    if (replaceMode != StringReplaceMode.DO_NOT_REPLACE) {
-                        if (proxiedClass == null) {
-                            proxiedClass = data.proxy(classDef).resolve()
-                        }
-
-                        if (proxiedImplementation == null) {
-                            proxiedImplementation = proxiedClass!!.methods.first {
-                                it.name == method.name && it.parameterTypes.containsAll(method.parameterTypes)
-                            }.implementation!!
-                        }
-
-                        val newString = if (replaceMode == StringReplaceMode.REPLACE_WITH_REVANCED) stringValue.replace(
-                            "com.google.android.apps.youtube.music", REVANCED_MUSIC_PACKAGE_NAME
-                        )
-                        else stringValue.replace("com.google", BASE_MICROG_PACKAGE_NAME)
-
-                        proxiedImplementation!!.replaceInstruction(
-                            i, BuilderInstruction21c(
-                                Opcode.CONST_STRING, instruction.registerA, ImmutableStringReference(newString)
-                            )
-                        )
-                    }
-                }
-            }
-        }
-
-        return PatchResultSuccess()
-    }
-
-    private fun disablePlayServiceChecks() {
-        listOf(
-            ServiceCheckFingerprint,
-            GooglePlayUtilityFingerprint,
-            CastDynamiteModuleFingerprint,
-            CastDynamiteModuleV2Fingerprint,
-            CastContextFetchFingerprint,
-        ).forEach { fingerprint ->
-            val result = fingerprint.result!!
-            val stringInstructions = when (result.method.returnType.first()) {
-                'L' -> """
-                        const/4 v0, 0x0
-                        return-object v0
-                        """
-
-                'V' -> "return-void"
-                'I' -> """
-                        const/4 v0, 0x0
-                        return v0
-                        """
-
-                else -> throw Exception("This case should never happen.")
-            }
-            result.mutableMethod.addInstructions(
-                0, stringInstructions
+    // NOTE: the previous patch also replaced the following strings, but it seems like they are not needed:
+    // - "com.google.android.gms.chimera.GmsIntentOperationService",
+    // - "com.google.android.gms.phenotype.internal.IPhenotypeCallbacks",
+    // - "com.google.android.gms.phenotype.internal.IPhenotypeService",
+    // - "com.google.android.gms.phenotype.PACKAGE_NAME",
+    // - "com.google.android.gms.phenotype.UPDATE",
+    // - "com.google.android.gms.phenotype",
+    override fun execute(data: BytecodeData) =
+        // apply common microG patch
+        MicroGBytecodeHelper.patchBytecode(
+            data,
+            arrayOf(
+                MicroGBytecodeHelper.packageNameTransform(
+                    Constants.PACKAGE_NAME,
+                    Constants.REVANCED_PACKAGE_NAME
+                )
+            ),
+            MicroGBytecodeHelper.PrimeMethodTransformationData(
+                PrimeFingerprint,
+                MUSIC_PACKAGE_NAME,
+                REVANCED_MUSIC_PACKAGE_NAME
+            ),
+            listOf(
+                ServiceCheckFingerprint,
+                GooglePlayUtilityFingerprint,
+                CastDynamiteModuleFingerprint,
+                CastDynamiteModuleV2Fingerprint,
+                CastContextFetchFingerprint
             )
-        }
-
-        val primeMethod = PrimeFingerprint.result!!.mutableMethod
-        val implementation = primeMethod.implementation!!
-
-        var register = 2
-        val index = implementation.instructions.indexOfFirst {
-            if (it.opcode != Opcode.CONST_STRING) return@indexOfFirst false
-
-            val instructionString = ((it as Instruction21c).reference as StringReference).string
-            if (instructionString != "com.google.android.apps.youtube.music") return@indexOfFirst false
-
-            register = it.registerA
-            return@indexOfFirst true
-        }
-
-        primeMethod.replaceInstruction(
-            index, "const-string v$register, \"$REVANCED_MUSIC_PACKAGE_NAME\""
-        )
-
-    }
+        ).let { PatchResultSuccess() }
 }

src/main/kotlin/app/revanced/patches/music/misc/microg/patch/resource/MusicMicroGResourcePatch.kt

@@ -1,44 +1,41 @@
-package app.revanced.patches.music.misc.microg.patch.resource
-
-import app.revanced.patcher.annotation.Description
-import app.revanced.patcher.annotation.Name
-import app.revanced.patcher.annotation.Version
-import app.revanced.patcher.data.impl.ResourceData
-import app.revanced.patcher.patch.PatchResult
-import app.revanced.patcher.patch.PatchResultSuccess
-import app.revanced.patcher.patch.impl.ResourcePatch
-import app.revanced.patches.music.misc.microg.annotations.MusicMicroGPatchCompatibility
-import app.revanced.patches.music.misc.microg.shared.Constants.BASE_MICROG_PACKAGE_NAME
-import app.revanced.patches.music.misc.microg.shared.Constants.REVANCED_MUSIC_APP_NAME
-import app.revanced.patches.music.misc.microg.shared.Constants.REVANCED_MUSIC_PACKAGE_NAME
-
-@Name("music-microg-resource-patch")
-@Description("Resource patch to allow YouTube Music ReVanced to run without root and under a different package name.")
-@MusicMicroGPatchCompatibility
-@Version("0.0.1")
-class MusicMicroGResourcePatch : ResourcePatch() {
-    override fun execute(data: ResourceData): PatchResult {
-
-        val manifest = data["AndroidManifest.xml"].readText()
-
-        data["AndroidManifest.xml"].writeText(
-            manifest.replace(
-                "package=\"com.google.android.apps.youtube.music", "package=\"$REVANCED_MUSIC_PACKAGE_NAME"
-            ).replace(
-                "android:label=\"@string/app_name", "android:label=\"$REVANCED_MUSIC_APP_NAME"
-            ).replace(
-                "android:label=\"@string/app_launcher_name", "android:label=\"$REVANCED_MUSIC_APP_NAME"
-            ).replace(
-                "android:authorities=\"com.google.android.apps.youtube.music", "android:authorities=\"$REVANCED_MUSIC_PACKAGE_NAME"
-            ).replace(
-                "com.google.android.apps.youtube.music.permission.C2D_MESSAGE", "$REVANCED_MUSIC_PACKAGE_NAME.permission.C2D_MESSAGE"
-            ).replace(
-                "com.google.android.c2dm", "$BASE_MICROG_PACKAGE_NAME.android.c2dm"
-            ).replace(
-                "</queries>", "<package android:name=\"$BASE_MICROG_PACKAGE_NAME.android.gms\"/></queries>"
-            )
-        )
-
-        return PatchResultSuccess()
-    }
+package app.revanced.patches.music.misc.microg.patch.resource
+
+import app.revanced.patcher.annotation.Description
+import app.revanced.patcher.annotation.Name
+import app.revanced.patcher.annotation.Version
+import app.revanced.patcher.data.impl.ResourceData
+import app.revanced.patcher.patch.PatchResult
+import app.revanced.patcher.patch.PatchResultSuccess
+import app.revanced.patcher.patch.impl.ResourcePatch
+import app.revanced.patches.music.misc.microg.annotations.MusicMicroGPatchCompatibility
+import app.revanced.patches.music.misc.microg.shared.Constants.MUSIC_PACKAGE_NAME
+import app.revanced.patches.music.misc.microg.shared.Constants.REVANCED_MUSIC_APP_NAME
+import app.revanced.patches.music.misc.microg.shared.Constants.REVANCED_MUSIC_PACKAGE_NAME
+import app.revanced.patches.music.misc.microg.shared.Constants.SPOOFED_PACKAGE_NAME
+import app.revanced.patches.music.misc.microg.shared.Constants.SPOOFED_PACKAGE_SIGNATURE
+import app.revanced.util.microg.MicroGManifestHelper
+import app.revanced.util.microg.MicroGResourceHelper
+
+@Name("music-microg-resource-patch")
+@Description("Resource patch to allow YouTube Music ReVanced to run without root and under a different package name.")
+@MusicMicroGPatchCompatibility
+@Version("0.0.2")
+class MusicMicroGResourcePatch : ResourcePatch() {
+    override fun execute(data: ResourceData): PatchResult {
+        // update manifest
+        MicroGResourceHelper.patchManifest(
+            data,
+            MUSIC_PACKAGE_NAME,
+            REVANCED_MUSIC_PACKAGE_NAME,
+            REVANCED_MUSIC_APP_NAME
+        )
+
+        // add metadata to the manifest
+        MicroGManifestHelper.addSpoofingMetadata(
+            data,
+            SPOOFED_PACKAGE_NAME,
+            SPOOFED_PACKAGE_SIGNATURE
+        )
+        return PatchResultSuccess()
+    }
 }

src/main/kotlin/app/revanced/patches/music/misc/microg/shared/Constants.kt

@@ -1,7 +1,9 @@
 package app.revanced.patches.music.misc.microg.shared
 
 object Constants {
-    internal const val BASE_MICROG_PACKAGE_NAME = "com.mgoogle"
     internal const val REVANCED_MUSIC_APP_NAME = "YouTube Music ReVanced"
     internal const val REVANCED_MUSIC_PACKAGE_NAME = "app.revanced.android.apps.youtube.music"
+    internal const val MUSIC_PACKAGE_NAME = "com.google.android.apps.youtube.music"
+    internal const val SPOOFED_PACKAGE_NAME = MUSIC_PACKAGE_NAME
+    internal const val SPOOFED_PACKAGE_SIGNATURE = "afb0fed5eeaebdd86f56a97742f4b6b33ef59875"
 }

src/main/kotlin/app/revanced/patches/youtube/misc/microg/patch/bytecode/MicroGBytecodePatch.kt

@@ -1,32 +1,21 @@
 package app.revanced.patches.youtube.misc.microg.patch.bytecode
 
-import app.revanced.extensions.equalsAny
 import app.revanced.patcher.annotation.Description
 import app.revanced.patcher.annotation.Name
 import app.revanced.patcher.annotation.Version
 import app.revanced.patcher.data.impl.BytecodeData
-import app.revanced.patcher.extensions.addInstructions
-import app.revanced.patcher.extensions.replaceInstruction
-import app.revanced.patcher.patch.PatchResult
 import app.revanced.patcher.patch.PatchResultSuccess
 import app.revanced.patcher.patch.annotations.DependsOn
 import app.revanced.patcher.patch.annotations.Patch
 import app.revanced.patcher.patch.impl.BytecodePatch
-import app.revanced.patcher.util.proxy.mutableTypes.MutableClass
 import app.revanced.patches.youtube.layout.castbutton.patch.HideCastButtonPatch
 import app.revanced.patches.youtube.misc.clientspoof.patch.ClientSpoofPatch
 import app.revanced.patches.youtube.misc.microg.annotations.MicroGPatchCompatibility
 import app.revanced.patches.youtube.misc.microg.fingerprints.*
 import app.revanced.patches.youtube.misc.microg.patch.resource.MicroGResourcePatch
-import app.revanced.patches.youtube.misc.microg.patch.resource.enum.StringReplaceMode
-import app.revanced.patches.youtube.misc.microg.shared.Constants.BASE_MICROG_PACKAGE_NAME
+import app.revanced.patches.youtube.misc.microg.shared.Constants.PACKAGE_NAME
 import app.revanced.patches.youtube.misc.microg.shared.Constants.REVANCED_PACKAGE_NAME
-import org.jf.dexlib2.Opcode
-import org.jf.dexlib2.builder.MutableMethodImplementation
-import org.jf.dexlib2.builder.instruction.BuilderInstruction21c
-import org.jf.dexlib2.iface.instruction.formats.Instruction21c
-import org.jf.dexlib2.iface.reference.StringReference
-import org.jf.dexlib2.immutable.reference.ImmutableStringReference
+import app.revanced.util.microg.MicroGBytecodeHelper
 
 @Patch
 @DependsOn(
@@ -51,121 +40,27 @@ class MicroGBytecodePatch : BytecodePatch(
         PrimeFingerprint,
     )
 ) {
-    override fun execute(data: BytecodeData): PatchResult {
-        disablePlayServiceChecksAndFixCastIssues()
-        data.classes.forEach { classDef ->
-            var proxiedClass: MutableClass? = null
-
-            classDef.methods.forEach methodLoop@{ method ->
-                val implementation = method.implementation ?: return@methodLoop
-
-                var proxiedImplementation: MutableMethodImplementation? = null
-
-                implementation.instructions.forEachIndexed { i, instruction ->
-                    if (instruction.opcode != Opcode.CONST_STRING) return@forEachIndexed
-
-                    val stringValue = ((instruction as Instruction21c).reference as StringReference).string
-
-                    val replaceMode = if (stringValue.equalsAny(
-                            "com.google.android.gms",
-                            "com.google.android.c2dm.intent.REGISTER",
-                            "com.google.android.c2dm.permission.SEND",
-                            "com.google.iid.TOKEN_REQUEST",
-                            "com.google",
-                            "com.google.android.gms.auth.accounts",
-                            "com.google.android.c2dm.intent.REGISTRATION",
-                            "com.google.android.gsf.action.GET_GLS",
-                            "com.google.android.gsf.login",
-                            "content://com.google.settings/partner",
-                            "content://com.google.android.gsf.gservices",
-                            "content://com.google.android.gsf.gservices/prefix",
-                            "com.google.android.c2dm.intent.RECEIVE"
-                        )
-                    ) {
-                        StringReplaceMode.REPLACE_WITH_MICROG
-                    } else if (stringValue.equalsAny(
-                            "com.google.android.youtube.SuggestionsProvider", "com.google.android.youtube.fileprovider"
-                        )
-                    ) {
-                        StringReplaceMode.REPLACE_WITH_REVANCED
-                    } else {
-                        StringReplaceMode.DO_NOT_REPLACE
-                    }
-
-                    if (replaceMode != StringReplaceMode.DO_NOT_REPLACE) {
-                        if (proxiedClass == null) {
-                            proxiedClass = data.proxy(classDef).resolve()
-                        }
-
-                        if (proxiedImplementation == null) {
-                            proxiedImplementation = proxiedClass!!.methods.first {
-                                it.name == method.name && it.parameterTypes.containsAll(method.parameterTypes)
-                            }.implementation!!
-                        }
-
-                        val newString = if (replaceMode == StringReplaceMode.REPLACE_WITH_REVANCED) stringValue.replace(
-                            "com.google.android.youtube", REVANCED_PACKAGE_NAME
-                        )
-                        else stringValue.replace("com.google", BASE_MICROG_PACKAGE_NAME)
-
-                        proxiedImplementation!!.replaceInstruction(
-                            i, BuilderInstruction21c(
-                                Opcode.CONST_STRING, instruction.registerA, ImmutableStringReference(newString)
-                            )
-                        )
-                    }
-                }
-            }
-        }
-
-        return PatchResultSuccess()
-    }
-
-    private fun disablePlayServiceChecksAndFixCastIssues() {
-        listOf(
-            IntegrityCheckFingerprint,
-            ServiceCheckFingerprint,
-            GooglePlayUtilityFingerprint,
-            CastDynamiteModuleFingerprint,
-            CastDynamiteModuleV2Fingerprint,
-            CastContextFetchFingerprint
-        ).forEach { fingerprint ->
-            val result = fingerprint.result!!
-            val stringInstructions = when (result.method.returnType.first()) {
-                'L' -> """
-                        const/4 v0, 0x0
-                        return-object v0
-                        """
-
-                'V' -> "return-void"
-                'I' -> """
-                        const/4 v0, 0x0
-                        return v0
-                        """
-
-                else -> throw Exception("This case should never happen.")
-            }
-            result.mutableMethod.addInstructions(
-                0, stringInstructions
+    override fun execute(data: BytecodeData) =
+        // apply common microG patch
+        MicroGBytecodeHelper.patchBytecode(
+            data, arrayOf(
+                MicroGBytecodeHelper.packageNameTransform(
+                    PACKAGE_NAME,
+                    REVANCED_PACKAGE_NAME
+                )
+            ),
+            MicroGBytecodeHelper.PrimeMethodTransformationData(
+                PrimeFingerprint,
+                PACKAGE_NAME,
+                REVANCED_PACKAGE_NAME
+            ),
+            listOf(
+                IntegrityCheckFingerprint,
+                ServiceCheckFingerprint,
+                GooglePlayUtilityFingerprint,
+                CastDynamiteModuleFingerprint,
+                CastDynamiteModuleV2Fingerprint,
+                CastContextFetchFingerprint
             )
-        }
-
-        val primeMethod = PrimeFingerprint.result!!.mutableMethod
-        val implementation = primeMethod.implementation!!
-
-        var register = 2
-        val index = implementation.instructions.indexOfFirst {
-            if (it.opcode != Opcode.CONST_STRING) return@indexOfFirst false
-
-            val instructionString = ((it as Instruction21c).reference as StringReference).string
-            if (instructionString != "com.google.android.youtube") return@indexOfFirst false
-
-            register = it.registerA
-            return@indexOfFirst true
-        }
-
-        primeMethod.replaceInstruction(
-            index, "const-string v$register, \"$REVANCED_PACKAGE_NAME\""
-        )
-    }
+        ).let { PatchResultSuccess() }
 }

src/main/kotlin/app/revanced/patches/youtube/misc/microg/patch/resource/MicroGResourcePatch.kt

@@ -8,14 +8,21 @@ import app.revanced.patcher.patch.PatchResult
 import app.revanced.patcher.patch.PatchResultSuccess
 import app.revanced.patcher.patch.annotations.DependsOn
 import app.revanced.patcher.patch.impl.ResourcePatch
+import app.revanced.patches.music.misc.microg.shared.Constants
 import app.revanced.patches.youtube.misc.manifest.patch.FixLocaleConfigErrorPatch
 import app.revanced.patches.youtube.misc.microg.annotations.MicroGPatchCompatibility
-import app.revanced.patches.youtube.misc.microg.shared.Constants.BASE_MICROG_PACKAGE_NAME
+import app.revanced.patches.youtube.misc.microg.shared.Constants.PACKAGE_NAME
+import app.revanced.patches.youtube.misc.microg.shared.Constants.REVANCED_APP_NAME
 import app.revanced.patches.youtube.misc.microg.shared.Constants.REVANCED_PACKAGE_NAME
-import app.revanced.patches.youtube.misc.settings.resource.patch.SettingsResourcePatch
+import app.revanced.patches.youtube.misc.microg.shared.Constants.SPOOFED_PACKAGE_NAME
+import app.revanced.patches.youtube.misc.microg.shared.Constants.SPOOFED_PACKAGE_SIGNATURE
 import app.revanced.patches.youtube.misc.settings.bytecode.patch.SettingsPatch
 import app.revanced.patches.youtube.misc.settings.framework.components.impl.Preference
 import app.revanced.patches.youtube.misc.settings.framework.components.impl.StringResource
+import app.revanced.patches.youtube.misc.settings.resource.patch.SettingsResourcePatch
+import app.revanced.util.microg.Constants.MICROG_VENDOR
+import app.revanced.util.microg.MicroGManifestHelper
+import app.revanced.util.microg.MicroGResourceHelper
 
 @Name("microg-resource-patch")
 @DependsOn([FixLocaleConfigErrorPatch::class, SettingsResourcePatch::class])
@@ -27,32 +34,26 @@ class MicroGResourcePatch : ResourcePatch() {
         SettingsPatch.addPreference(
             Preference(
                 StringResource("microg_settings", "MicroG Settings"),
-                Preference.Intent("$BASE_MICROG_PACKAGE_NAME.android.gms", "", "org.microg.gms.ui.SettingsActivity"),
+                Preference.Intent("$MICROG_VENDOR.android.gms", "", "org.microg.gms.ui.SettingsActivity"),
                 StringResource("microg_settings_summary", "Settings for MicroG"),
             )
         )
         SettingsPatch.renameIntentsTargetPackage(REVANCED_PACKAGE_NAME)
 
-        val manifest = data["AndroidManifest.xml"]
-        manifest.writeText(
-            manifest.readText()
-                .replace(
-                    "package=\"com.google.android.youtube", "package=\"$REVANCED_PACKAGE_NAME"
-                ).replace(
-                    "android:authorities=\"com.google.android.youtube", "android:authorities=\"$REVANCED_PACKAGE_NAME"
-                ).replace(
-                    "com.google.android.youtube.permission.C2D_MESSAGE", "$REVANCED_PACKAGE_NAME.permission.C2D_MESSAGE"
-                ).replace( // might not be needed
-                    "com.google.android.youtube.lifecycle-trojan", "$REVANCED_PACKAGE_NAME.lifecycle-trojan"
-                ).replace( // might not be needed
-                    "com.google.android.youtube.photopicker_images", "$REVANCED_PACKAGE_NAME.photopicker_images"
-                ).replace(
-                    "com.google.android.c2dm", "$BASE_MICROG_PACKAGE_NAME.android.c2dm"
-                ).replace(
-                    "</queries>", "<package android:name=\"$BASE_MICROG_PACKAGE_NAME.android.gms\"/></queries>"
-                )
+        // update manifest
+        MicroGResourceHelper.patchManifest(
+            data,
+            PACKAGE_NAME,
+            REVANCED_PACKAGE_NAME,
+            REVANCED_APP_NAME
         )
 
+        // add metadata to manifest
+        MicroGManifestHelper.addSpoofingMetadata(
+            data,
+            SPOOFED_PACKAGE_NAME,
+            SPOOFED_PACKAGE_SIGNATURE
+        )
         return PatchResultSuccess()
     }
 }

src/main/kotlin/app/revanced/patches/youtube/misc/microg/patch/resource/enum/StringReplaceMode.kt

@@ -1,5 +0,0 @@
-package app.revanced.patches.youtube.misc.microg.patch.resource.enum
-
-enum class StringReplaceMode {
-    REPLACE_WITH_MICROG, REPLACE_WITH_REVANCED, DO_NOT_REPLACE
-}

src/main/kotlin/app/revanced/patches/youtube/misc/microg/shared/Constants.kt

@@ -1,6 +1,9 @@
 package app.revanced.patches.youtube.misc.microg.shared
 
 object Constants {
-    internal const val BASE_MICROG_PACKAGE_NAME = "com.mgoogle"
+    internal const val REVANCED_APP_NAME = "YouTube ReVanced"
     internal const val REVANCED_PACKAGE_NAME = "app.revanced.android.youtube"
+    internal const val PACKAGE_NAME = "com.google.android.youtube"
+    internal const val SPOOFED_PACKAGE_NAME = PACKAGE_NAME
+    internal const val SPOOFED_PACKAGE_SIGNATURE = "24bb24c05e47e0aefa68a58a766179d9b613a600"
 }

src/main/kotlin/app/revanced/util/microg/Constants.kt

@@ -0,0 +1,130 @@
+package app.revanced.util.microg
+
+/**
+ * constants for microG builds with signature spoofing
+ */
+internal object Constants {
+    /**
+     * microG vendor name
+     * aka. package prefix / package base
+     */
+    const val MICROG_VENDOR = "com.mgoogle"
+
+    /**
+     * meta-data for microG package name spoofing on patched builds
+     */
+    const val META_SPOOFED_PACKAGE_NAME = "$MICROG_VENDOR.android.gms.SPOOFED_PACKAGE_NAME"
+
+    /**
+     * meta-data for microG package signature spoofing on patched builds
+     */
+    const val META_SPOOFED_PACKAGE_SIGNATURE = "$MICROG_VENDOR.android.gms.SPOOFED_PACKAGE_SIGNATURE"
+
+    /**
+     * meta-data for microG package detection
+     */
+    const val META_GMS_PACKAGE_NAME = "app.revanced.MICROG_PACKAGE_NAME"
+
+    /**
+     * a list of all permissions in microG
+     */
+    val PERMISSIONS = listOf(
+        // C2DM / GCM
+        "com.google.android.c2dm.permission.RECEIVE",
+        "com.google.android.c2dm.permission.SEND",
+        "com.google.android.gtalkservice.permission.GTALK_SERVICE",
+
+        // GAuth
+        "com.google.android.googleapps.permission.GOOGLE_AUTH",
+        "com.google.android.googleapps.permission.GOOGLE_AUTH.cp",
+        "com.google.android.googleapps.permission.GOOGLE_AUTH.local",
+        "com.google.android.googleapps.permission.GOOGLE_AUTH.mail",
+        "com.google.android.googleapps.permission.GOOGLE_AUTH.writely",
+    )
+
+    /**
+     * a list of all (intent) actions in microG
+     */
+    val ACTIONS = listOf(
+        // location
+        "com.google.android.gms.location.places.ui.PICK_PLACE",
+        "com.google.android.gms.location.places.GeoDataApi",
+        "com.google.android.gms.location.places.PlacesApi",
+        "com.google.android.gms.location.places.PlaceDetectionApi",
+        "com.google.android.gms.wearable.MESSAGE_RECEIVED",
+
+        // C2DM / GCM
+        "com.google.android.c2dm.intent.REGISTER",
+        "com.google.android.c2dm.intent.REGISTRATION",
+        "com.google.android.c2dm.intent.UNREGISTER",
+        "com.google.android.c2dm.intent.RECEIVE",
+        "com.google.iid.TOKEN_REQUEST",
+        "com.google.android.gcm.intent.SEND",
+
+        // car
+        "com.google.android.gms.car.service.START",
+
+        // people
+        "com.google.android.gms.people.service.START",
+
+        // wearable
+        "com.google.android.gms.wearable.BIND",
+
+        // auth
+        "com.google.android.gsf.login",
+        "com.google.android.gsf.action.GET_GLS",
+        "com.google.android.gms.common.account.CHOOSE_ACCOUNT",
+        "com.google.android.gms.auth.login.LOGIN",
+        "com.google.android.gms.auth.api.credentials.PICKER",
+        "com.google.android.gms.auth.api.credentials.service.START",
+        "com.google.android.gms.auth.service.START",
+        "com.google.firebase.auth.api.gms.service.START",
+        "com.google.android.gms.auth.be.appcert.AppCertService",
+
+        // fido
+        "com.google.android.gms.fido.fido2.privileged.START",
+
+        // games
+        "com.google.android.gms.games.service.START",
+        "com.google.android.gms.games.PLAY_GAMES_UPGRADE",
+
+        // chimera
+        "com.google.android.gms.chimera",
+
+        // fonts
+        "com.google.android.gms.fonts",
+
+        // phenotype
+        "com.google.android.gms.phenotype.service.START",
+
+        // location
+        "com.google.android.gms.location.reporting.service.START",
+
+        // misc
+        "com.google.android.gms.gmscompliance.service.START",
+        "com.google.android.gms.oss.licenses.service.START",
+        "com.google.android.gms.safetynet.service.START",
+        "com.google.android.gms.tapandpay.service.BIND"
+    )
+
+    /**
+     * a list of all content provider authorities in microG
+     */
+    val AUTHORITIES = listOf(
+        // gsf
+        "com.google.android.gsf.gservices",
+        "com.google.settings",
+
+        // auth
+        "com.google.android.gms.auth.accounts",
+
+        // chimera
+        "com.google.android.gms.chimera",
+
+        // fonts
+        "com.google.android.gms.fonts",
+
+        // phenotype
+        "com.google.android.gms.phenotype"
+    )
+}

src/main/kotlin/app/revanced/util/microg/MicroGBytecodeHelper.kt

@@ -0,0 +1,229 @@
+package app.revanced.util.microg
+
+import app.revanced.patcher.data.impl.BytecodeData
+import app.revanced.patcher.extensions.addInstructions
+import app.revanced.patcher.extensions.replaceInstruction
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import app.revanced.patcher.util.proxy.mutableTypes.MutableClass
+import app.revanced.patcher.util.proxy.mutableTypes.MutableMethod
+import app.revanced.util.microg.Constants.ACTIONS
+import app.revanced.util.microg.Constants.AUTHORITIES
+import app.revanced.util.microg.Constants.MICROG_VENDOR
+import app.revanced.util.microg.Constants.PERMISSIONS
+import org.jf.dexlib2.Opcode
+import org.jf.dexlib2.builder.instruction.BuilderInstruction21c
+import org.jf.dexlib2.iface.instruction.formats.Instruction21c
+import org.jf.dexlib2.iface.reference.StringReference
+import org.jf.dexlib2.immutable.reference.ImmutableStringReference
+
+/**
+ * Helper class for applying bytecode patches needed for the microg-support patches.
+ */
+internal object MicroGBytecodeHelper {
+
+    /**
+     * Transform strings with package name out of [fromPackageName] and [toPackageName].
+     *
+     * @param fromPackageName Original package name.
+     * @param toPackageName The package name to accept.
+     **/
+    fun packageNameTransform(fromPackageName: String, toPackageName: String): (String) -> String? {
+        return { referencedString ->
+            when (referencedString) {
+                "$fromPackageName.SuggestionsProvider",
+                "$fromPackageName.fileprovider" -> referencedString.replace(fromPackageName, toPackageName)
+                else -> null
+            }
+        }
+    }
+
+    /**
+     * Prime method data class for the [MicroGBytecodeHelper] class.
+     *
+     * @param primeMethodFingerprint The prime methods [MethodFingerprint].
+     * @param fromPackageName Original package name.
+     * @param toPackageName The package name to accept.
+     **/
+    data class PrimeMethodTransformationData(
+        val primeMethodFingerprint: MethodFingerprint,
+        val fromPackageName: String,
+        val toPackageName: String
+    ) {
+        /**
+         * Patch the prime method to accept the new package name.
+         */
+        fun transformPrimeMethodPackageName() {
+            val primeMethod = primeMethodFingerprint.result!!.mutableMethod
+            val implementation = primeMethod.implementation!!
+
+            var register = 2
+            val index = implementation.instructions.indexOfFirst {
+                if (it.opcode != Opcode.CONST_STRING) return@indexOfFirst false
+
+                val instructionString = ((it as Instruction21c).reference as StringReference).string
+                if (instructionString != fromPackageName) return@indexOfFirst false
+
+                register = it.registerA
+                return@indexOfFirst true
+            }
+
+            primeMethod.replaceInstruction(
+                index, "const-string v$register, \"$toPackageName\""
+            )
+        }
+    }
+
+    /**
+     * Patch the bytecode to work with MicroG.
+     * Note: this only handles string constants to gms (intent actions, authorities, ...).
+     * If the app employs additional checks to validate the installed gms package, you'll have to handle those in the app- specific patch
+     *
+     * @param data Bytecode data instance.
+     * @param additionalStringTransforms Additional transformations applied to all const-string references.
+     * @param primeMethodTransformationData Data to patch the prime method.
+     * @param earlyReturns List of [MethodFingerprint] to return the resolved methods early.
+     */
+    fun patchBytecode(
+        data: BytecodeData,
+        additionalStringTransforms: Array<(str: String) -> String?>,
+        primeMethodTransformationData: PrimeMethodTransformationData,
+        earlyReturns: List<MethodFingerprint>
+    ) {
+        earlyReturns.returnEarly()
+        primeMethodTransformationData.transformPrimeMethodPackageName()
+
+        val allTransforms = arrayOf(
+            MicroGBytecodeHelper::commonTransform,
+            MicroGBytecodeHelper::contentUrisTransform,
+            *additionalStringTransforms
+        )
+
+        // transform all strings using all provided transforms, first match wins
+        data.transformStringReferences transform@{
+            for (transformFn in allTransforms) {
+                val s = transformFn(it)
+                if (s != null) return@transform s
+            }
+
+            return@transform null
+        }
+    }
+
+    /**
+     * const-string transform function for common gms string references.
+     *
+     * @param referencedString The string to transform.
+     */
+    private fun commonTransform(referencedString: String): String? =
+        when (referencedString) {
+            "com.google",
+            "com.google.android.gms",
+            in PERMISSIONS,
+            in ACTIONS,
+            in AUTHORITIES -> referencedString.replace("com.google", MICROG_VENDOR)
+
+            // subscribedfeeds has no vendor prefix for whatever reason...
+            "subscribedfeeds" -> "${MICROG_VENDOR}.subscribedfeeds"
+            else -> null
+        }
+
+
+    /**
+     * const-string transform function for strings containing gms content uris / authorities.
+     */
+    private fun contentUrisTransform(str: String): String? {
+        // only when content:// uri
+        if (str.startsWith("content://")) {
+            // check if matches any authority
+            for (authority in AUTHORITIES) {
+                val uriPrefix = "content://$authority"
+                if (str.startsWith(uriPrefix)) {
+                    return str.replace(
+                        uriPrefix,
+                        "content://${authority.replace("com.google", MICROG_VENDOR)}"
+                    )
+                }
+            }
+
+            // gms also has a 'subscribedfeeds' authority, check for that one too
+            val subFeedsUriPrefix = "content://subscribedfeeds"
+            if (str.startsWith(subFeedsUriPrefix)) {
+                return str.replace(subFeedsUriPrefix, "content://${MICROG_VENDOR}.subscribedfeeds")
+            }
+        }
+
+        return null
+    }
+
+    /**
+     * Transform all constant string references using a transformation function.
+     *
+     * @param transformFn string transformation function. if null, string is not changed.
+     */
+    private fun BytecodeData.transformStringReferences(transformFn: (str: String) -> String?) {
+        classes.forEach { classDef ->
+            var mutableClass: MutableClass? = null
+
+            // enumerate all methods
+            classDef.methods.forEach classLoop@{ methodDef ->
+                var mutableMethod: MutableMethod? = null
+                val implementation = methodDef.implementation ?: return@classLoop
+
+                // enumerate all instructions and find const-string
+                implementation.instructions.forEachIndexed implLoop@{ index, instruction ->
+                    // skip all that are not const-string
+                    if (instruction.opcode != Opcode.CONST_STRING) return@implLoop
+                    val str = ((instruction as Instruction21c).reference as StringReference).string
+
+                    // call transform function
+                    val transformedStr = transformFn(str)
+                    if (transformedStr != null) {
+                        // make class and method mutable, if not already
+                        mutableClass = mutableClass ?: proxy(classDef).resolve()
+                        mutableMethod = mutableMethod ?: mutableClass!!.methods.first {
+                            it.name == methodDef.name && it.parameterTypes.containsAll(methodDef.parameterTypes)
+                        }
+
+                        // replace instruction with updated string
+                        mutableMethod!!.implementation!!.replaceInstruction(
+                            index,
+                            BuilderInstruction21c(
+                                Opcode.CONST_STRING,
+                                instruction.registerA,
+                                ImmutableStringReference(
+                                    transformedStr
+                                )
+                            )
+                        )
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * Return the resolved methods of a list of [MethodFingerprint] early.
+     */
+    private fun List<MethodFingerprint>.returnEarly() {
+        this.forEach { fingerprint ->
+            val result = fingerprint.result!!
+            val stringInstructions = when (result.method.returnType.first()) {
+                'L' -> """
+                        const/4 v0, 0x0
+                        return-object v0
+                        """
+
+                'V' -> "return-void"
+                'I' -> """
+                        const/4 v0, 0x0
+                        return v0
+                        """
+
+                else -> throw Exception("This case should never happen.")
+            }
+            result.mutableMethod.addInstructions(
+                0, stringInstructions
+            )
+        }
+    }
+}

src/main/kotlin/app/revanced/util/microg/MicroGManifestHelper.kt

@@ -0,0 +1,58 @@
+package app.revanced.util.microg
+
+import app.revanced.patcher.data.impl.ResourceData
+import app.revanced.util.microg.Constants.META_GMS_PACKAGE_NAME
+import app.revanced.util.microg.Constants.META_SPOOFED_PACKAGE_NAME
+import app.revanced.util.microg.Constants.META_SPOOFED_PACKAGE_SIGNATURE
+import app.revanced.util.microg.Constants.MICROG_VENDOR
+import org.w3c.dom.Element
+import org.w3c.dom.Node
+
+/**
+ * helper class for adding manifest metadata needed for microG builds with signature spoofing
+ */
+internal object MicroGManifestHelper {
+
+    /**
+     * Add manifest entries needed for package and signature spoofing when using MicroG.
+     * Note: this only adds metadata entries for signature spoofing, other changes may still be required to make a microG patch work.
+     *
+     * @param data Resource data.
+     * @param spoofedPackage The package to spoof.
+     * @param spoofedSignature The signature to spoof.
+     */
+    fun addSpoofingMetadata(
+        data: ResourceData,
+        spoofedPackage: String,
+        spoofedSignature: String
+    ) {
+        data.xmlEditor["AndroidManifest.xml"].use {
+            val applicationNode = it
+                .file
+                .getElementsByTagName("application")
+                .item(0)
+
+            // package spoofing
+            applicationNode.adoptChild("meta-data") {
+                setAttribute("android:name", META_SPOOFED_PACKAGE_NAME)
+                setAttribute("android:value", spoofedPackage)
+            }
+            applicationNode.adoptChild("meta-data") {
+                setAttribute("android:name", META_SPOOFED_PACKAGE_SIGNATURE)
+                setAttribute("android:value", spoofedSignature)
+            }
+
+            // microG presence detection in integrations
+            applicationNode.adoptChild("meta-data") {
+                setAttribute("android:name", META_GMS_PACKAGE_NAME)
+                setAttribute("android:value", "${MICROG_VENDOR}.android.gms")
+            }
+        }
+    }
+
+    private fun Node.adoptChild(tagName: String, block: Element.() -> Unit) {
+        val child = ownerDocument.createElement(tagName)
+        child.block()
+        appendChild(child)
+    }
+}

src/main/kotlin/app/revanced/util/microg/MicroGResourceHelper.kt

@@ -0,0 +1,49 @@
+package app.revanced.util.microg
+
+import app.revanced.patcher.data.impl.ResourceData
+
+/**
+ * Helper class for applying resource patches needed for the microg-support patches.
+ */
+internal object MicroGResourceHelper {
+    /**
+     * Patch the manifest to work with MicroG.
+     *
+     * @param data Bytecode data instance.
+     * @param fromPackageName Original package name.
+     * @param toPackageName The package name to accept.
+     * @param toName The new name of the app.
+     */
+    fun patchManifest(
+        data: ResourceData,
+        fromPackageName: String,
+        toPackageName: String,
+        toName: String
+    ) {
+        val manifest = data["AndroidManifest.xml"].readText()
+        data["AndroidManifest.xml"].writeText(
+            manifest.replace(
+                "package=\"$fromPackageName",
+                "package=\"$toPackageName"
+            ).replace(
+                "android:label=\"@string/app_name",
+                "android:label=\"$toName"
+            ).replace(
+                "android:label=\"@string/app_launcher_name",
+                "android:label=\"$toName"
+            ).replace(
+                "android:authorities=\"$fromPackageName",
+                "android:authorities=\"$toPackageName"
+            ).replace(
+                "$fromPackageName.permission.C2D_MESSAGE",
+                "$toPackageName.permission.C2D_MESSAGE"
+            ).replace(
+                "com.google.android.c2dm",
+                "${Constants.MICROG_VENDOR}.android.c2dm"
+            ).replace(
+                "</queries>",
+                "<package android:name=\"${Constants.MICROG_VENDOR}.android.gms\"/></queries>"
+            )
+        )
+    }
+}