Open-source multiplayer game server compatible with the RuneScape client
https://www.openrs2.org/
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56 lines
1.9 KiB
56 lines
1.9 KiB
package org.openrs2.patcher.transform
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import com.github.michaelbull.logging.InlineLogger
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import org.bouncycastle.crypto.params.RSAPrivateCrtKeyParameters
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import org.objectweb.asm.tree.ClassNode
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import org.objectweb.asm.tree.LdcInsnNode
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import org.objectweb.asm.tree.MethodNode
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import org.openrs2.asm.classpath.ClassPath
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import org.openrs2.asm.classpath.Library
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import org.openrs2.asm.transform.Transformer
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import javax.inject.Inject
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import javax.inject.Singleton
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@Singleton
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public class PublicKeyTransformer @Inject constructor(private val key: RSAPrivateCrtKeyParameters) : Transformer() {
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private var exponents = 0
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private var moduli = 0
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override fun preTransform(classPath: ClassPath) {
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exponents = 0
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moduli = 0
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}
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override fun transformCode(classPath: ClassPath, library: Library, clazz: ClassNode, method: MethodNode): Boolean {
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for (insn in method.instructions) {
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if (insn !is LdcInsnNode) {
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continue
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}
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when (insn.cst) {
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JAGEX_EXPONENT -> {
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insn.cst = key.publicExponent.toString()
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exponents++
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}
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JAGEX_MODULUS -> {
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insn.cst = key.modulus.toString()
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moduli++
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}
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}
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}
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return false
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}
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override fun postTransform(classPath: ClassPath) {
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logger.info { "Replaced $exponents exponents and $moduli moduli" }
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}
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private companion object {
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private val logger = InlineLogger()
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private const val JAGEX_EXPONENT =
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"58778699976184461502525193738213253649000149147835990136706041084440742975821"
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private const val JAGEX_MODULUS = "71629005252297980327618167912305272963293132912323242902378492635012082079" +
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"72894053929065636522363163621000728841182238772712427862772219676577293600221789"
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}
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}
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