From d5df2e68f47cbb3d374b8ce24769872959014051 Mon Sep 17 00:00:00 2001
From: Technikte <49494924+Technikte@users.noreply.github.com>
Date: Thu, 4 Aug 2022 19:03:56 +0200
Subject: [PATCH] feat: `promo-code-unlock` patch (#292)

---
 .../PromoCodeUnlockCompatibility.kt           | 13 ++++++
 .../PromoCodeUnlockFingerprint.kt             | 26 ++++++++++++
 .../promocode/patch/PromoCodeUnlockPatch.kt   | 42 +++++++++++++++++++
 3 files changed, 81 insertions(+)
 create mode 100644 src/main/kotlin/app/revanced/patches/warnwetter/misc/promocode/annotations/PromoCodeUnlockCompatibility.kt
 create mode 100644 src/main/kotlin/app/revanced/patches/warnwetter/misc/promocode/fingerprints/PromoCodeUnlockFingerprint.kt
 create mode 100644 src/main/kotlin/app/revanced/patches/warnwetter/misc/promocode/patch/PromoCodeUnlockPatch.kt

diff --git a/src/main/kotlin/app/revanced/patches/warnwetter/misc/promocode/annotations/PromoCodeUnlockCompatibility.kt b/src/main/kotlin/app/revanced/patches/warnwetter/misc/promocode/annotations/PromoCodeUnlockCompatibility.kt
new file mode 100644
index 000000000..b14201ecd
--- /dev/null
+++ b/src/main/kotlin/app/revanced/patches/warnwetter/misc/promocode/annotations/PromoCodeUnlockCompatibility.kt
@@ -0,0 +1,13 @@
+package app.revanced.patches.warnwetter.misc.promocode.annotations
+
+import app.revanced.patcher.annotation.Compatibility
+import app.revanced.patcher.annotation.Package
+
+@Compatibility(
+    [Package(
+        "de.dwd.warnapp", arrayOf()
+    )]
+)
+@Target(AnnotationTarget.CLASS)
+@Retention(AnnotationRetention.RUNTIME)
+internal annotation class PromoCodeUnlockCompatibility
diff --git a/src/main/kotlin/app/revanced/patches/warnwetter/misc/promocode/fingerprints/PromoCodeUnlockFingerprint.kt b/src/main/kotlin/app/revanced/patches/warnwetter/misc/promocode/fingerprints/PromoCodeUnlockFingerprint.kt
new file mode 100644
index 000000000..41d980d05
--- /dev/null
+++ b/src/main/kotlin/app/revanced/patches/warnwetter/misc/promocode/fingerprints/PromoCodeUnlockFingerprint.kt
@@ -0,0 +1,26 @@
+package app.revanced.patches.warnwetter.misc.promocode.fingerprints
+
+import app.revanced.patcher.annotation.Name
+import app.revanced.patcher.annotation.Version
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import app.revanced.patcher.fingerprint.method.annotation.MatchingMethod
+import app.revanced.patches.youtube.layout.createbutton.annotations.CreateButtonCompatibility
+import org.jf.dexlib2.AccessFlags
+import org.jf.dexlib2.Opcode
+
+@Name("promo-code-unlock-fingerprint")
+@MatchingMethod(
+    "Lde/dwd/warnapp/model/PromoTokenVerification;", "isValid"
+)
+@CreateButtonCompatibility
+@Version("0.0.1")
+object PromoCodeUnlockFingerprint : MethodFingerprint(
+    null,
+    null,
+    null,
+    null,
+    null,
+    { methodDef ->
+        methodDef.definingClass.endsWith("PromoTokenVerification;") && methodDef.name == "isValid"
+    }
+)
\ No newline at end of file
diff --git a/src/main/kotlin/app/revanced/patches/warnwetter/misc/promocode/patch/PromoCodeUnlockPatch.kt b/src/main/kotlin/app/revanced/patches/warnwetter/misc/promocode/patch/PromoCodeUnlockPatch.kt
new file mode 100644
index 000000000..3cae70b40
--- /dev/null
+++ b/src/main/kotlin/app/revanced/patches/warnwetter/misc/promocode/patch/PromoCodeUnlockPatch.kt
@@ -0,0 +1,42 @@
+package app.revanced.patches.warnwetter.misc.promocode.patch
+
+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.removeInstruction
+import app.revanced.patcher.extensions.removeInstructions
+import app.revanced.patcher.extensions.addInstructions
+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.patches.warnwetter.misc.promocode.annotations.PromoCodeUnlockCompatibility
+import app.revanced.patches.warnwetter.misc.promocode.fingerprints.PromoCodeUnlockFingerprint
+
+@Patch
+@Name("promo-code-unlock")
+@Description("Disables the validation of promo code. Any code will work to unlock all features.")
+@PromoCodeUnlockCompatibility
+@Version("0.0.1")
+class PromoCodeUnlockPatch : BytecodePatch(
+    listOf(
+        PromoCodeUnlockFingerprint
+    )
+) {
+
+    override fun execute(data: BytecodeData): PatchResult {
+        val method = PromoCodeUnlockFingerprint.result!!.mutableMethod
+        method.addInstructions(
+            0,
+            """
+                const/4 v0, 0x1
+                return v0
+            """
+        )
+
+        return PatchResultSuccess()
+    }
+
+
+}
\ No newline at end of file