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5 changes: 5 additions & 0 deletions
5
modules/core/src/main/kotlin/org/polyfrost/spice/Constants.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| package org.polyfrost.spice | ||
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| import kotlin.io.path.Path | ||
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| val spiceDirectory = Path("spice").toAbsolutePath() |
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130 changes: 130 additions & 0 deletions
130
modules/core/src/main/kotlin/org/polyfrost/spice/patcher/Cache.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,130 @@ | ||
| package org.polyfrost.spice.patcher | ||
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| import kotlinx.coroutines.coroutineScope | ||
| import kotlinx.serialization.Serializable | ||
| import kotlinx.serialization.encodeToString | ||
| import kotlinx.serialization.json.Json | ||
| import org.objectweb.asm.ClassReader | ||
| import org.objectweb.asm.ClassWriter.COMPUTE_FRAMES | ||
| import org.objectweb.asm.tree.ClassNode | ||
| import org.polyfrost.spice.patcher.lwjgl.LibraryTransformer | ||
| import org.polyfrost.spice.patcher.lwjgl.LwjglTransformer | ||
| import org.polyfrost.spice.spiceDirectory | ||
| import org.spongepowered.asm.transformers.MixinClassWriter | ||
| import java.util.jar.JarFile | ||
| import java.util.jar.JarOutputStream | ||
| import java.util.zip.ZipEntry | ||
| import kotlin.io.path.createDirectories | ||
| import kotlin.io.path.exists | ||
| import kotlin.io.path.outputStream | ||
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| private val provider by lazy { LwjglTransformer.provider } | ||
| private val cacheDirectory = spiceDirectory.resolve(".cache") | ||
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| fun currentHash(): String = provider.hash | ||
| fun isCached(hash: String): Boolean = cachePath(hash).exists() | ||
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| fun loadCache(hash: String): Map<String, ClassNode> = | ||
| loadCacheBuffers(hash).mapValues { (_, buffer) -> | ||
| ClassNode() | ||
| .also { ClassReader(buffer).accept(it, 0) } | ||
| } | ||
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| fun loadCacheBuffers(hash: String): Map<String, ByteArray> { | ||
| val path = cachePath(hash) | ||
| val jar = JarFile(path.toFile()) | ||
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| val manifest = Json.decodeFromString<CacheManifest>( | ||
| jar | ||
| .getInputStream(jar.getEntry("cache-manifest.json")) | ||
| .use { | ||
| it | ||
| .readBytes() | ||
| .toString(Charsets.UTF_8) | ||
| }) | ||
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| return manifest.transformable | ||
| .associateWith { transformable -> | ||
| jar | ||
| .getInputStream(jar.getEntry("$transformable.class")) | ||
| .use { it.readBytes() } | ||
| } | ||
| } | ||
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| suspend fun buildCache(hash: String, `in`: List<ClassNode>): Map<String, ClassNode> { | ||
| // todo: abuse coroutines. | ||
| return coroutineScope { | ||
| val transformers = arrayOf( | ||
| LwjglTransformer, | ||
| LibraryTransformer | ||
| ) | ||
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| val transformable = mutableSetOf<String>() | ||
| val provider = LwjglTransformer.provider | ||
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| val transformed = mutableMapOf<String, ClassNode>() | ||
| val buffers = mutableMapOf<String, ByteArray>() | ||
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| `in`.forEach { node -> | ||
| transformable.add(node.name) | ||
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| transformers.forEach transform@{ transformer -> | ||
| val targets = transformer.getClassNames() | ||
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| if (targets != null | ||
| && !targets.contains(node.name.replace("/", ".")) | ||
| ) return@transform | ||
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| transformer.transform(node) | ||
| } | ||
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| transformed[node.name] = node | ||
| buffers["${node.name}.class"] = | ||
| MixinClassWriter(COMPUTE_FRAMES) | ||
| .also { node.accept(it) } | ||
| .toByteArray() | ||
| } | ||
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| provider.allEntries.forEach { entry -> | ||
| if (!entry.endsWith(".class") || !entry.startsWith("org/lwjgl/")) return@forEach | ||
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| if (!buffers.contains(entry)) { | ||
| buffers[entry] = | ||
| provider.readFile(entry) ?: return@forEach | ||
| } | ||
| } | ||
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| JarOutputStream(cachePath(hash).outputStream()) | ||
| .use { out -> | ||
| out.putNextEntry(ZipEntry("cache-manifest.json")) | ||
| out.write( | ||
| Json.encodeToString<CacheManifest>( | ||
| CacheManifest( | ||
| transformable.toList() | ||
| ) | ||
| ).toByteArray(Charsets.UTF_8) | ||
| ) | ||
| out.closeEntry() | ||
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| buffers.forEach { (name, buffer) -> | ||
| out.putNextEntry(ZipEntry(name)) | ||
| out.write(buffer) | ||
| out.closeEntry() | ||
| } | ||
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| out.finish() | ||
| } | ||
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| transformed | ||
| } | ||
| } | ||
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| private fun cachePath(hash: String) = | ||
| cacheDirectory | ||
| .createDirectories() | ||
| .resolve("$hash.jar") | ||
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| @Serializable | ||
| private data class CacheManifest( | ||
| val transformable: List<String> | ||
| ) |
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