From e0f33468e6e96b9f10cf35ec67622d6488528c90 Mon Sep 17 00:00:00 2001
From: Sylvain Finot <25269226+SF73@users.noreply.github.com>
Date: Mon, 22 Dec 2025 15:00:08 +0100
Subject: [PATCH] feat(ProtonVPN): Add `Unlock split tunneling` patch (#6353)

Co-authored-by: oSumAtrIX <johan.melkonyan1@web.de>
---
 patches/api/patches.api                       |  4 +++
 .../protonvpn/splittunneling/Fingerprints.kt  | 20 +++++++++++
 .../splittunneling/UnlockSplitTunneling.kt    | 34 +++++++++++++++++++
 3 files changed, 58 insertions(+)
 create mode 100644 patches/src/main/kotlin/app/revanced/patches/protonvpn/splittunneling/Fingerprints.kt
 create mode 100644 patches/src/main/kotlin/app/revanced/patches/protonvpn/splittunneling/UnlockSplitTunneling.kt

diff --git a/patches/api/patches.api b/patches/api/patches.api
index 9f779cbed..c8438af90 100644
--- a/patches/api/patches.api
+++ b/patches/api/patches.api
@@ -649,6 +649,10 @@ public final class app/revanced/patches/protonvpn/delay/RemoveDelayPatchKt {
 	public static final fun getRemoveDelayPatch ()Lapp/revanced/patcher/patch/BytecodePatch;
 }
 
+public final class app/revanced/patches/protonvpn/splittunneling/UnlockSplitTunnelingKt {
+	public static final fun getUnlockSplitTunnelingPatch ()Lapp/revanced/patcher/patch/BytecodePatch;
+}
+
 public final class app/revanced/patches/rar/misc/annoyances/purchasereminder/HidePurchaseReminderPatchKt {
 	public static final fun getHidePurchaseReminderPatch ()Lapp/revanced/patcher/patch/BytecodePatch;
 }
diff --git a/patches/src/main/kotlin/app/revanced/patches/protonvpn/splittunneling/Fingerprints.kt b/patches/src/main/kotlin/app/revanced/patches/protonvpn/splittunneling/Fingerprints.kt
new file mode 100644
index 000000000..639141723
--- /dev/null
+++ b/patches/src/main/kotlin/app/revanced/patches/protonvpn/splittunneling/Fingerprints.kt
@@ -0,0 +1,20 @@
+package app.revanced.patches.protonvpn.splittunneling
+
+import app.revanced.patcher.fingerprint
+import com.android.tools.smali.dexlib2.AccessFlags
+import com.android.tools.smali.dexlib2.Opcode
+
+internal val enableSplitTunnelingUiFingerprint = fingerprint {
+    strings("currentModeAppNames")
+    opcodes(
+        Opcode.MOVE_OBJECT,
+        Opcode.MOVE_FROM16,
+        Opcode.INVOKE_DIRECT_RANGE
+    )
+}
+
+internal val initializeSplitTunnelingSettingsUIFingerprint = fingerprint {
+    custom { method, _ ->
+        method.name == "applyRestrictions"
+    }
+}
\ No newline at end of file
diff --git a/patches/src/main/kotlin/app/revanced/patches/protonvpn/splittunneling/UnlockSplitTunneling.kt b/patches/src/main/kotlin/app/revanced/patches/protonvpn/splittunneling/UnlockSplitTunneling.kt
new file mode 100644
index 000000000..f50a5f993
--- /dev/null
+++ b/patches/src/main/kotlin/app/revanced/patches/protonvpn/splittunneling/UnlockSplitTunneling.kt
@@ -0,0 +1,34 @@
+package app.revanced.patches.protonvpn.splittunneling
+
+import app.revanced.patcher.extensions.InstructionExtensions.getInstruction
+import app.revanced.patcher.extensions.InstructionExtensions.removeInstruction
+import app.revanced.patcher.extensions.InstructionExtensions.replaceInstruction
+import app.revanced.patcher.patch.bytecodePatch
+import app.revanced.util.getReference
+import app.revanced.util.indexOfFirstInstructionOrThrow
+import com.android.tools.smali.dexlib2.iface.instruction.OneRegisterInstruction
+import com.android.tools.smali.dexlib2.iface.reference.MethodReference
+
+@Suppress("unused")
+val unlockSplitTunnelingPatch =
+    bytecodePatch(
+        name = "Unlock split tunneling",
+    ) {
+        compatibleWith("ch.protonvpn.android")
+
+        execute {
+            val registerIndex = enableSplitTunnelingUiFingerprint.patternMatch!!.endIndex - 1
+
+            enableSplitTunnelingUiFingerprint.method.apply {
+                val register = getInstruction<OneRegisterInstruction>(registerIndex).registerA
+                replaceInstruction(registerIndex, "const/4 v$register, 0x0")
+            }
+
+            initializeSplitTunnelingSettingsUIFingerprint.method.apply {
+                val initSettingsIndex = indexOfFirstInstructionOrThrow {
+                    getReference<MethodReference>()?.name == "getSplitTunneling"
+                }
+                removeInstruction(initSettingsIndex - 1)
+            }
+        }
+    }