Open-source multiplayer game server compatible with the RuneScape client
https://www.openrs2.org/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
113 lines
3.8 KiB
113 lines
3.8 KiB
package dev.openrs2.deob.transform
|
|
|
|
import com.github.michaelbull.logging.InlineLogger
|
|
import dev.openrs2.asm.MemberRef
|
|
import dev.openrs2.asm.classpath.ClassPath
|
|
import dev.openrs2.asm.classpath.Library
|
|
import dev.openrs2.asm.hasCode
|
|
import dev.openrs2.asm.nextReal
|
|
import dev.openrs2.asm.removeDeadCode
|
|
import dev.openrs2.asm.transform.Transformer
|
|
import org.objectweb.asm.Opcodes
|
|
import org.objectweb.asm.tree.AbstractInsnNode
|
|
import org.objectweb.asm.tree.ClassNode
|
|
import org.objectweb.asm.tree.InsnNode
|
|
import org.objectweb.asm.tree.LdcInsnNode
|
|
import org.objectweb.asm.tree.MethodInsnNode
|
|
import org.objectweb.asm.tree.MethodNode
|
|
import org.objectweb.asm.tree.VarInsnNode
|
|
import javax.inject.Singleton
|
|
|
|
@Singleton
|
|
class ResetTransformer : Transformer() {
|
|
private val resetMethods = mutableSetOf<MemberRef>()
|
|
|
|
override fun preTransform(classPath: ClassPath) {
|
|
resetMethods.clear()
|
|
|
|
for (library in classPath.libraries) {
|
|
for (clazz in library) {
|
|
for (method in clazz.methods) {
|
|
if (!method.hasCode) {
|
|
continue
|
|
}
|
|
|
|
val masterReset = findMasterReset(method) ?: continue
|
|
logger.info { "Identified master reset method $masterReset" }
|
|
|
|
val resetClass = classPath.getClassNode("client!client")!!
|
|
val resetMethod = resetClass.methods.first {
|
|
it.name == masterReset.name && it.desc == masterReset.desc
|
|
}
|
|
|
|
findResetMethods(resetMethods, resetClass, resetMethod)
|
|
|
|
resetMethod.instructions.clear()
|
|
resetMethod.tryCatchBlocks.clear()
|
|
resetMethod.instructions.add(InsnNode(Opcodes.RETURN))
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
override fun transformClass(classPath: ClassPath, library: Library, clazz: ClassNode): Boolean {
|
|
clazz.methods.removeIf { resetMethods.contains(MemberRef(clazz, it)) }
|
|
return false
|
|
}
|
|
|
|
override fun postTransform(classPath: ClassPath) {
|
|
logger.info { "Removed ${resetMethods.size} reset methods" }
|
|
}
|
|
|
|
private companion object {
|
|
private val logger = InlineLogger()
|
|
|
|
private fun findMasterReset(method: MethodNode): MemberRef? {
|
|
var shutdownLdc: AbstractInsnNode? = null
|
|
for (insn in method.instructions) {
|
|
if (insn is LdcInsnNode && insn.cst == "Shutdown complete - clean:") {
|
|
shutdownLdc = insn
|
|
break
|
|
}
|
|
}
|
|
|
|
var insn = shutdownLdc
|
|
while (insn != null) {
|
|
if (insn !is VarInsnNode || insn.opcode != Opcodes.ALOAD) {
|
|
insn = insn.previous
|
|
continue
|
|
}
|
|
|
|
if (insn.`var` != 0) {
|
|
insn = insn.previous
|
|
continue
|
|
}
|
|
|
|
val nextInsn = insn.nextReal
|
|
if (nextInsn !is MethodInsnNode || nextInsn.opcode != Opcodes.INVOKEVIRTUAL) {
|
|
insn = insn.previous
|
|
continue
|
|
}
|
|
|
|
if (nextInsn.desc != "()V") {
|
|
insn = insn.previous
|
|
continue
|
|
}
|
|
|
|
return MemberRef(nextInsn)
|
|
}
|
|
|
|
return null
|
|
}
|
|
|
|
private fun findResetMethods(resetMethods: MutableSet<MemberRef>, clazz: ClassNode, method: MethodNode) {
|
|
method.removeDeadCode(clazz.name)
|
|
|
|
for (insn in method.instructions) {
|
|
if (insn is MethodInsnNode && insn.opcode == Opcodes.INVOKESTATIC) {
|
|
resetMethods.add(MemberRef(insn))
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|