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Deobfuscate a single client at a time

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At the moment, this means hard-coding the HD client but we should
reintroduce support for the SD and unsigned clients in the future.

This change provides a few benefits:

* Performance (~3x faster), as I generally only care about the HD
  client.

* Allows us to continue injecting the NameMap for the HD client without
  worrying about how to avoid injecting it (or support a different
  NameMap) for the SD and unsigned clients.

Signed-off-by: Graham <gpe@openrs2.dev>
pull/132/head
Graham 4 years ago
parent 79b0103a06
commit d28c712299
1 changed files with 11 additions and 62 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 73
      deob/src/main/java/dev/openrs2/deob/Deobfuscator.kt

73
deob/src/main/java/dev/openrs2/deob/Deobfuscator.kt
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@ -22,62 +22,31 @@ class Deobfuscator @Inject constructor(
// read input jars/packs
logger.info { "Reading input jars" }
val unpackClass = Library.read(input.resolve("unpackclass.pack"), JarLibraryReader)
val glUnpackClass = Library(unpackClass)
val loader = Library.read(input.resolve("loader.jar"), JarLibraryReader)
val glLoader = Library.read(input.resolve("loader_gl.jar"), JarLibraryReader)
val loader = Library.read(input.resolve("loader_gl.jar"), JarLibraryReader)
val gl = Library.read(input.resolve("jaggl.pack200"), Pack200LibraryReader)
val client = Library.read(input.resolve("runescape.jar"), JarLibraryReader)
val glClient = Library.read(input.resolve("runescape_gl.pack200"), Pack200LibraryReader)
/*
* TODO(gpe): it'd be nice to have separate signlink.jar and
* signlink-unsigned.jar files so we don't (effectively) deobfuscate
* runescape.jar twice with different sets of names, but thinking about
* how this would work is tricky (as the naming must match)
*/
val unsignedClient = Library(client)
val client = Library.read(input.resolve("runescape_gl.pack200"), Pack200LibraryReader)
// overwrite client's classes with signed classes from the loader
logger.info { "Moving signed classes from loader" }
val signLink = Library()
SignedClassUtils.move(loader, client, signLink)
logger.info { "Moving signed classes from loader_gl" }
val glSignLink = Library()
SignedClassUtils.move(glLoader, glClient, glSignLink)
val signlink = Library()
SignedClassUtils.move(loader, client, signlink)
// move unpack class out of the loader (so the unpacker and loader can both depend on it)
logger.info { "Moving unpack from loader to unpack" }
val unpack = Library()
unpack.add(loader.remove("unpack")!!)
logger.info { "Moving unpack from loader_gl to unpack_gl" }
val glUnpack = Library()
glUnpack.add(glLoader.remove("unpack")!!)
// prefix remaining loader/unpacker classes (to avoid conflicts when we rename in the same classpath as the client)
logger.info { "Prefixing loader and unpackclass class names" }
loader.remap(PrefixRemapper.create(loader, "loader_", profile.excludedClasses))
glLoader.remap(PrefixRemapper.create(glLoader, "loader_", profile.excludedClasses))
unpackClass.remap(PrefixRemapper.create(unpackClass, "unpackclass_", profile.excludedClasses))
glUnpackClass.remap(PrefixRemapper.create(glUnpackClass, "unpackclass_", profile.excludedClasses))
// bundle libraries together into a common classpath
val runtime = ClassLoader.getPlatformClassLoader()
val classPath = ClassPath(
runtime,
dependencies = emptyList(),
libraries = listOf(client, loader, signLink, unpack, unpackClass)
)
val glClassPath = ClassPath(
runtime,
dependencies = emptyList(),
libraries = listOf(gl, glClient, glLoader, glSignLink, glUnpack, glUnpackClass)
)
val unsignedClassPath = ClassPath(
runtime,
dependencies = emptyList(),
libraries = listOf(unsignedClient)
libraries = listOf(gl, client, loader, signlink, unpack, unpackClass)
)
// deobfuscate
@ -87,37 +56,17 @@ class Deobfuscator @Inject constructor(
transformer.transform(classPath)
}
logger.info { "Transforming client_gl" }
for (transformer in transformers) {
logger.info { "Running transformer ${transformer.javaClass.simpleName}" }
transformer.transform(glClassPath)
}
logger.info { "Transforming client_unsigned" }
for (transformer in transformers) {
logger.info { "Running transformer ${transformer.javaClass.simpleName}" }
transformer.transform(unsignedClassPath)
}
// write output jars
logger.info { "Writing output jars" }
Files.createDirectories(output)
client.write(output.resolve("runescape.jar"), JarLibraryWriter, classPath)
loader.write(output.resolve("loader.jar"), JarLibraryWriter, classPath)
signLink.write(output.resolve("signlink.jar"), JarLibraryWriter, classPath)
unpack.write(output.resolve("unpack.jar"), JarLibraryWriter, classPath)
unpackClass.write(output.resolve("unpackclass.jar"), JarLibraryWriter, classPath)
gl.write(output.resolve("jaggl.jar"), JarLibraryWriter, glClassPath)
glClient.write(output.resolve("runescape_gl.jar"), JarLibraryWriter, glClassPath)
glLoader.write(output.resolve("loader_gl.jar"), JarLibraryWriter, glClassPath)
glSignLink.write(output.resolve("signlink_gl.jar"), JarLibraryWriter, glClassPath)
glUnpack.write(output.resolve("unpack_gl.jar"), JarLibraryWriter, glClassPath)
glUnpackClass.write(output.resolve("unpackclass_gl.jar"), JarLibraryWriter, glClassPath)
unsignedClient.write(output.resolve("runescape_unsigned.jar"), JarLibraryWriter, unsignedClassPath)
gl.write(output.resolve("jaggl.jar"), JarLibraryWriter, classPath)
client.write(output.resolve("runescape_gl.jar"), JarLibraryWriter, classPath)
loader.write(output.resolve("loader_gl.jar"), JarLibraryWriter, classPath)
signlink.write(output.resolve("signlink_gl.jar"), JarLibraryWriter, classPath)
unpack.write(output.resolve("unpack_gl.jar"), JarLibraryWriter, classPath)
unpackClass.write(output.resolve("unpackclass_gl.jar"), JarLibraryWriter, classPath)
}
private companion object {

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