Open-source multiplayer game server compatible with the RuneScape client
https://www.openrs2.org/
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75 lines
3.2 KiB
75 lines
3.2 KiB
package dev.openrs2.deob
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import com.github.michaelbull.logging.InlineLogger
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import dev.openrs2.asm.classpath.ClassPath
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import dev.openrs2.asm.classpath.Library
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import dev.openrs2.asm.io.JarLibraryReader
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import dev.openrs2.asm.io.JarLibraryWriter
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import dev.openrs2.asm.io.Pack200LibraryReader
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import dev.openrs2.asm.transform.Transformer
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import dev.openrs2.deob.remap.PrefixRemapper
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import java.nio.file.Files
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import java.nio.file.Path
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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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class Deobfuscator @Inject constructor(
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private val profile: Profile,
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@DeobfuscatorQualifier private val transformers: Set<@JvmSuppressWildcards Transformer>
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) {
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fun run(input: Path, output: Path) {
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// read input jars/packs
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logger.info { "Reading input jars" }
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val client = Library.read(input.resolve("runescape_gl.pack200"), Pack200LibraryReader)
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val gl = Library.read(input.resolve("jaggl.pack200"), Pack200LibraryReader)
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val loader = Library.read(input.resolve("loader_gl.jar"), JarLibraryReader)
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val unpackClass = Library.read(input.resolve("unpackclass.pack"), JarLibraryReader)
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// overwrite client's classes with signed classes from the loader
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logger.info { "Moving signed classes from loader to signlink" }
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val signlink = Library()
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SignedClassUtils.move(loader, client, signlink)
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// move unpack class out of the loader (so the unpacker and loader can both depend on it)
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logger.info { "Moving unpack from loader to unpack" }
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val unpack = Library()
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unpack.add(loader.remove("unpack")!!)
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// prefix remaining loader/unpacker classes (to avoid conflicts when we rename in the same classpath as the client)
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logger.info { "Prefixing loader and unpackclass class names" }
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loader.remap(PrefixRemapper.create(loader, "loader_", profile.excludedClasses))
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unpackClass.remap(PrefixRemapper.create(unpackClass, "unpackclass_", profile.excludedClasses))
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// bundle libraries together into a common classpath
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val runtime = ClassLoader.getPlatformClassLoader()
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val classPath = ClassPath(
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runtime,
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dependencies = emptyList(),
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libraries = listOf(client, gl, loader, signlink, unpack, unpackClass)
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)
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// deobfuscate
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logger.info { "Transforming client" }
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for (transformer in transformers) {
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logger.info { "Running transformer ${transformer.javaClass.simpleName}" }
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transformer.transform(classPath)
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}
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// write output jars
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logger.info { "Writing output jars" }
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Files.createDirectories(output)
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client.write(output.resolve("runescape_gl.jar"), JarLibraryWriter, classPath)
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gl.write(output.resolve("jaggl.jar"), JarLibraryWriter, classPath)
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loader.write(output.resolve("loader_gl.jar"), JarLibraryWriter, classPath)
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signlink.write(output.resolve("signlink_gl.jar"), JarLibraryWriter, classPath)
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unpack.write(output.resolve("unpack_gl.jar"), JarLibraryWriter, classPath)
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unpackClass.write(output.resolve("unpackclass_gl.jar"), JarLibraryWriter, classPath)
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}
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private companion object {
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private val logger = InlineLogger()
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}
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}
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