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fix(duolingo): fix missing StringBuilder in skip energy recharge ads

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Duolingo optimized the toString() method, removing StringBuilder. Replaced findFieldFromToString with custom smali bytecode parsing.
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nmknm 2026-03-06 14:49:38 +02:00 • committed by GitHub
parent 6b06b9d132
commit c450a795ea
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1 changed files with 36 additions and 3 deletions
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39
patches/src/main/kotlin/app/revanced/patches/duolingo/energy/SkipEnergyRechargeAdsPatch.kt
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@ -2,7 +2,10 @@ package app.revanced.patches.duolingo.energy
import app.revanced.patcher.extensions.InstructionExtensions.addInstructions
import app.revanced.patcher.patch.bytecodePatch
import app.revanced.util.findFieldFromToString
import com.android.tools.smali.dexlib2.Opcode
import com.android.tools.smali.dexlib2.iface.instruction.ReferenceInstruction
import com.android.tools.smali.dexlib2.iface.reference.FieldReference
import com.android.tools.smali.dexlib2.iface.reference.StringReference
@Suppress("unused")
val skipEnergyRechargeAdsPatch = bytecodePatch(
@ -15,8 +18,38 @@ val skipEnergyRechargeAdsPatch = bytecodePatch(
initializeEnergyConfigFingerprint
.match(energyConfigToStringFingerprint.classDef)
.method.apply {
val energyField = energyConfigToStringFingerprint.method
.findFieldFromToString("energy=")
val toStringMethod = energyConfigToStringFingerprint.method
val instructions = toStringMethod.implementation!!.instructions.toList()
var energyField: String? = null
// Search for the string "energy=" and get the preceding IGET instruction.
for (i in instructions.indices) {
val instr = instructions[i]
val ref = (instr as? ReferenceInstruction)?.reference
if (ref is StringReference && ref.string.contains("energy=")) {
// Search backwards for the field getter (IGET)
for (j in i downTo 0) {
val prevInstr = instructions[j]
if (prevInstr.opcode == Opcode.IGET) {
val fieldRef = (prevInstr as ReferenceInstruction).reference as FieldReference
// Construct the full valid Smali field reference: Lclass;->name:type
energyField = "${fieldRef.definingClass}->${fieldRef.name}:${fieldRef.type}"
break
}
}
break
}
}
// Fallback: The first IGET instruction is guaranteed to be the 'energy' property.
if (energyField == null) {
val fallbackInstr = instructions.first { it.opcode == Opcode.IGET }
val fieldRef = (fallbackInstr as ReferenceInstruction).reference as FieldReference
energyField = "${fieldRef.definingClass}->${fieldRef.name}:${fieldRef.type}"
}
val insertIndex = initializeEnergyConfigFingerprint.patternMatch!!.startIndex
addInstructions(