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fix(YouTube - Client spoof): Spoof all user agents
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102 changes: 69 additions & 33 deletions
102
src/main/kotlin/app/revanced/patches/youtube/misc/fix/playback/ClientSpoofPatch.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,51 +1,87 @@ | ||
| package app.revanced.patches.youtube.misc.fix.playback | ||
|
|
||
| import app.revanced.util.exception | ||
| import app.revanced.patcher.data.BytecodeContext | ||
| import app.revanced.patcher.extensions.InstructionExtensions.addInstruction | ||
| import app.revanced.patcher.extensions.InstructionExtensions.getInstruction | ||
| import app.revanced.patcher.patch.BytecodePatch | ||
| import app.revanced.patcher.extensions.InstructionExtensions.replaceInstruction | ||
| import app.revanced.patcher.patch.annotation.CompatiblePackage | ||
| import app.revanced.patcher.patch.annotation.Patch | ||
| import app.revanced.patches.youtube.misc.fix.playback.fingerprints.UserAgentHeaderBuilderFingerprint | ||
| import com.android.tools.smali.dexlib2.iface.instruction.FiveRegisterInstruction | ||
| import app.revanced.patcher.util.proxy.mutableTypes.MutableMethod | ||
| import app.revanced.patches.all.misc.transformation.BaseTransformInstructionsPatch | ||
| import app.revanced.patches.all.misc.transformation.IMethodCall | ||
| import app.revanced.patches.all.misc.transformation.Instruction35cInfo | ||
| import app.revanced.patches.all.misc.transformation.filterMapInstruction35c | ||
| import app.revanced.util.getReference | ||
| import com.android.tools.smali.dexlib2.iface.ClassDef | ||
| import com.android.tools.smali.dexlib2.iface.Method | ||
| import com.android.tools.smali.dexlib2.iface.instruction.Instruction | ||
| import com.android.tools.smali.dexlib2.iface.instruction.OneRegisterInstruction | ||
| import com.android.tools.smali.dexlib2.iface.reference.MethodReference | ||
|
|
||
| @Patch( | ||
| name = "Client spoof", | ||
| description = "Adds options to spoof the client to allow video playback.", | ||
| dependencies = [SpoofSignaturePatch::class], | ||
| compatiblePackages = [ | ||
| CompatiblePackage( | ||
| "com.google.android.youtube", [ | ||
| "18.48.39", | ||
| "18.49.37", | ||
| "19.01.34", | ||
| "19.02.39", | ||
| "19.03.36", | ||
| "19.04.38", | ||
| "19.05.36", | ||
| "19.06.39", | ||
| "19.07.40", | ||
| "19.08.36", | ||
| "19.09.37" | ||
| ] | ||
| ) | ||
| ] | ||
| CompatiblePackage("com.google.android.youtube"), | ||
| ], | ||
| ) | ||
| object ClientSpoofPatch : BytecodePatch( | ||
| setOf(UserAgentHeaderBuilderFingerprint) | ||
| ) { | ||
| object ClientSpoofPatch : BaseTransformInstructionsPatch<Instruction35cInfo>() { | ||
| private const val ORIGINAL_PACKAGE_NAME = "com.google.android.youtube" | ||
| private const val USER_AGENT_STRING_BUILDER_APPEND_METHOD_REFERENCE = | ||
| "Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;" | ||
|
|
||
| override fun execute(context: BytecodeContext) { | ||
| UserAgentHeaderBuilderFingerprint.result?.let { result -> | ||
| val insertIndex = result.scanResult.patternScanResult!!.endIndex | ||
| result.mutableMethod.apply { | ||
| val packageNameRegister = getInstruction<FiveRegisterInstruction>(insertIndex).registerD | ||
| override fun filterMap( | ||
| classDef: ClassDef, | ||
| method: Method, | ||
| instruction: Instruction, | ||
| instructionIndex: Int, | ||
| ) = filterMapInstruction35c<MethodCall>( | ||
| "Lapp/revanced/integrations", | ||
| classDef, | ||
| instruction, | ||
| instructionIndex, | ||
| ) | ||
|
|
||
| addInstruction(insertIndex, "const-string v$packageNameRegister, \"$ORIGINAL_PACKAGE_NAME\"") | ||
| } | ||
| override fun transform(mutableMethod: MutableMethod, entry: Instruction35cInfo) { | ||
| val (_, _, instructionIndex) = entry | ||
|
|
||
| } ?: throw UserAgentHeaderBuilderFingerprint.exception | ||
| // Replace the result of context.getPackageName(), if it is used in a user agent string. | ||
| mutableMethod.apply { | ||
| // After context.getPackageName() the result is moved to a register. | ||
| val targetRegister = ( | ||
| getInstruction(instructionIndex + 1) | ||
| as? OneRegisterInstruction ?: return | ||
| ).registerA | ||
|
|
||
| // IndexOutOfBoundsException is not possible here, | ||
| // but no such occurrences are present in the app. | ||
| val referee = getInstruction(instructionIndex + 2).getReference<MethodReference>()?.toString() | ||
|
|
||
| // This can technically also match non-user agent string builder append methods, | ||
| // but no such occurrences are present in the app. | ||
| if (referee != USER_AGENT_STRING_BUILDER_APPEND_METHOD_REFERENCE) { | ||
| return | ||
| } | ||
|
|
||
| // Overwrite the result of context.getPackageName() with the original package name. | ||
| replaceInstruction( | ||
| instructionIndex + 1, | ||
| "const-string v$targetRegister, \"${ORIGINAL_PACKAGE_NAME}\"", | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| @Suppress("unused") | ||
| private enum class MethodCall( | ||
| override val definedClassName: String, | ||
| override val methodName: String, | ||
| override val methodParams: Array<String>, | ||
| override val returnType: String, | ||
| ) : IMethodCall { | ||
| GetPackageName( | ||
| "Landroid/content/Context;", | ||
| "getPackageName", | ||
| emptyArray(), | ||
| "Ljava/lang/String;", | ||
| ), | ||
| } | ||
| } |
10 changes: 0 additions & 10 deletions
10
...anced/patches/youtube/misc/fix/playback/fingerprints/UserAgentHeaderBuilderFingerprint.kt
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