From c514860bc4a46295b11f09df9ffc1c556b798eb3 Mon Sep 17 00:00:00 2001
From: Tim Schneeberger <tim.schneeberger@outlook.de>
Date: Sun, 13 Nov 2022 02:26:14 +0100
Subject: [PATCH] feat(twitch): `debug-mode` patch (#1031)

Co-authored-by: oSumAtrIX <johan.melkonyan1@web.de>
---
 .../annotations/DebugModeCompatibility.kt     | 10 ++++
 .../IsDebugConfigEnabledFingerprint.kt        | 16 ++++++
 .../IsOmVerificationEnabledFingerprint.kt     | 16 ++++++
 .../ShouldShowDebugOptionsFingerprint.kt      | 16 ++++++
 .../twitch/debug/patch/DebugModePatch.kt      | 49 +++++++++++++++++++
 5 files changed, 107 insertions(+)
 create mode 100644 src/main/kotlin/app/revanced/patches/twitch/debug/annotations/DebugModeCompatibility.kt
 create mode 100644 src/main/kotlin/app/revanced/patches/twitch/debug/fingerprints/IsDebugConfigEnabledFingerprint.kt
 create mode 100644 src/main/kotlin/app/revanced/patches/twitch/debug/fingerprints/IsOmVerificationEnabledFingerprint.kt
 create mode 100644 src/main/kotlin/app/revanced/patches/twitch/debug/fingerprints/ShouldShowDebugOptionsFingerprint.kt
 create mode 100644 src/main/kotlin/app/revanced/patches/twitch/debug/patch/DebugModePatch.kt

diff --git a/src/main/kotlin/app/revanced/patches/twitch/debug/annotations/DebugModeCompatibility.kt b/src/main/kotlin/app/revanced/patches/twitch/debug/annotations/DebugModeCompatibility.kt
new file mode 100644
index 000000000..394b9e904
--- /dev/null
+++ b/src/main/kotlin/app/revanced/patches/twitch/debug/annotations/DebugModeCompatibility.kt
@@ -0,0 +1,10 @@
+package app.revanced.patches.twitch.debug.annotations
+
+import app.revanced.patcher.annotation.Compatibility
+import app.revanced.patcher.annotation.Package
+
+@Compatibility([Package("tv.twitch.android.app")])
+@Target(AnnotationTarget.CLASS)
+@Retention(AnnotationRetention.RUNTIME)
+internal annotation class DebugModeCompatibility
+
diff --git a/src/main/kotlin/app/revanced/patches/twitch/debug/fingerprints/IsDebugConfigEnabledFingerprint.kt b/src/main/kotlin/app/revanced/patches/twitch/debug/fingerprints/IsDebugConfigEnabledFingerprint.kt
new file mode 100644
index 000000000..b0072e890
--- /dev/null
+++ b/src/main/kotlin/app/revanced/patches/twitch/debug/fingerprints/IsDebugConfigEnabledFingerprint.kt
@@ -0,0 +1,16 @@
+package app.revanced.patches.twitch.debug.fingerprints
+
+import app.revanced.patcher.annotation.Name
+import app.revanced.patcher.annotation.Version
+
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import app.revanced.patches.twitch.debug.annotations.DebugModeCompatibility
+
+@Name("is-debug-config-enabled-fingerprint")
+@DebugModeCompatibility
+@Version("0.0.1")
+object IsDebugConfigEnabledFingerprint : MethodFingerprint(
+    customFingerprint = { methodDef ->
+        methodDef.definingClass.endsWith("BuildConfigUtil;") && methodDef.name == "isDebugConfigEnabled"
+    }
+)
\ No newline at end of file
diff --git a/src/main/kotlin/app/revanced/patches/twitch/debug/fingerprints/IsOmVerificationEnabledFingerprint.kt b/src/main/kotlin/app/revanced/patches/twitch/debug/fingerprints/IsOmVerificationEnabledFingerprint.kt
new file mode 100644
index 000000000..b8e108534
--- /dev/null
+++ b/src/main/kotlin/app/revanced/patches/twitch/debug/fingerprints/IsOmVerificationEnabledFingerprint.kt
@@ -0,0 +1,16 @@
+package app.revanced.patches.twitch.debug.fingerprints
+
+import app.revanced.patcher.annotation.Name
+import app.revanced.patcher.annotation.Version
+
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import app.revanced.patches.twitch.debug.annotations.DebugModeCompatibility
+
+@Name("is-om-verification-enabled-fingerprint")
+@DebugModeCompatibility
+@Version("0.0.1")
+object IsOmVerificationEnabledFingerprint : MethodFingerprint(
+    customFingerprint = { methodDef ->
+        methodDef.definingClass.endsWith("BuildConfigUtil;") && methodDef.name == "isOmVerificationEnabled"
+    }
+)
\ No newline at end of file
diff --git a/src/main/kotlin/app/revanced/patches/twitch/debug/fingerprints/ShouldShowDebugOptionsFingerprint.kt b/src/main/kotlin/app/revanced/patches/twitch/debug/fingerprints/ShouldShowDebugOptionsFingerprint.kt
new file mode 100644
index 000000000..6006fcba5
--- /dev/null
+++ b/src/main/kotlin/app/revanced/patches/twitch/debug/fingerprints/ShouldShowDebugOptionsFingerprint.kt
@@ -0,0 +1,16 @@
+package app.revanced.patches.twitch.debug.fingerprints
+
+import app.revanced.patcher.annotation.Name
+import app.revanced.patcher.annotation.Version
+
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import app.revanced.patches.twitch.debug.annotations.DebugModeCompatibility
+
+@Name("should-show-debug-options-fingerprint")
+@DebugModeCompatibility
+@Version("0.0.1")
+object ShouldShowDebugOptionsFingerprint : MethodFingerprint(
+    customFingerprint = { methodDef ->
+        methodDef.definingClass.endsWith("BuildConfigUtil;") && methodDef.name == "shouldShowDebugOptions"
+    }
+)
\ No newline at end of file
diff --git a/src/main/kotlin/app/revanced/patches/twitch/debug/patch/DebugModePatch.kt b/src/main/kotlin/app/revanced/patches/twitch/debug/patch/DebugModePatch.kt
new file mode 100644
index 000000000..2829b97fd
--- /dev/null
+++ b/src/main/kotlin/app/revanced/patches/twitch/debug/patch/DebugModePatch.kt
@@ -0,0 +1,49 @@
+package app.revanced.patches.twitch.debug.patch
+
+import app.revanced.patcher.annotation.Description
+import app.revanced.patcher.annotation.Name
+import app.revanced.patcher.annotation.Version
+import app.revanced.patcher.data.BytecodeContext
+import app.revanced.patcher.extensions.addInstructions
+import app.revanced.patcher.patch.BytecodePatch
+import app.revanced.patcher.patch.PatchResult
+import app.revanced.patcher.patch.PatchResultSuccess
+import app.revanced.patcher.patch.annotations.Patch
+import app.revanced.patches.twitch.debug.annotations.DebugModeCompatibility
+import app.revanced.patches.twitch.debug.fingerprints.IsDebugConfigEnabledFingerprint
+import app.revanced.patches.twitch.debug.fingerprints.IsOmVerificationEnabledFingerprint
+import app.revanced.patches.twitch.debug.fingerprints.ShouldShowDebugOptionsFingerprint
+
+@Patch(false)
+@Name("debug-mode")
+@Description("Enables Twitch's internal debugging mode.")
+@DebugModeCompatibility
+@Version("0.0.1")
+class DebugModePatch : BytecodePatch(
+    listOf(
+        IsDebugConfigEnabledFingerprint,
+        IsOmVerificationEnabledFingerprint,
+        ShouldShowDebugOptionsFingerprint
+    )
+) {
+    override fun execute(context: BytecodeContext): PatchResult {
+        listOf(
+            IsDebugConfigEnabledFingerprint,
+            IsOmVerificationEnabledFingerprint,
+            ShouldShowDebugOptionsFingerprint
+        ).forEach {
+            with(it.result!!) {
+                with(mutableMethod) {
+                    addInstructions(
+                        0,
+                        """
+                             const/4 v0, 0x1
+                             return v0
+                          """
+                    )
+                }
+            }
+        }
+        return PatchResultSuccess()
+    }
+}