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Remap plugin libraries with namespace set to spigot (#10610)

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* Remap plugin libraries with namespace set to spigot

* Remap plugin libraries with namespace set to spigot
This commit is contained in:
Jason Penilla 2024-04-28 14:55:10 -07:00 committed by GitHub
parent 7f2d5315fd
commit 05308fc299
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GPG key ID: B5690EEEBB952194
4 changed files with 401 additions and 279 deletions
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38
patches/api/0474-Add-hook-to-remap-library-jars.patch Normal file
View file

@ -0,0 +1,38 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jason Penilla <11360596+jpenilla@users.noreply.github.com>
Date: Sun, 28 Apr 2024 13:51:08 -0700
Subject: [PATCH] Add hook to remap library jars
diff --git a/src/main/java/org/bukkit/plugin/java/LibraryLoader.java b/src/main/java/org/bukkit/plugin/java/LibraryLoader.java
index 5b0203e908f84c531886b8ea8faeb591eb045636..8e1b6be2462aaa692efa1f72986921a6dc357196 100644
--- a/src/main/java/org/bukkit/plugin/java/LibraryLoader.java
+++ b/src/main/java/org/bukkit/plugin/java/LibraryLoader.java
@@ -47,6 +47,7 @@ public class LibraryLoader
private final DefaultRepositorySystemSession session;
private final List<RemoteRepository> repositories;
public static java.util.function.BiFunction<URL[], ClassLoader, URLClassLoader> LIBRARY_LOADER_FACTORY; // Paper - rewrite reflection in libraries
+ public static java.util.function.Function<List<java.nio.file.Path>, List<java.nio.file.Path>> REMAPPER; // Paper - remap libraries
public LibraryLoader(@NotNull Logger logger)
{
@@ -111,9 +112,18 @@ public class LibraryLoader
}
List<URL> jarFiles = new ArrayList<>();
+ List<java.nio.file.Path> jarPaths = new ArrayList<>(); // Paper - remap libraries
for ( ArtifactResult artifact : result.getArtifactResults() )
{
- File file = artifact.getArtifact().getFile();
+ // Paper start - remap libraries
+ jarPaths.add(artifact.getArtifact().getFile().toPath());
+ }
+ if (REMAPPER != null) {
+ jarPaths = REMAPPER.apply(jarPaths);
+ }
+ for (java.nio.file.Path path : jarPaths) {
+ File file = path.toFile();
+ // Paper end - remap libraries
URL url;
try

126
patches/server/0020-Plugin-remapping.patch
View file

@ -66,22 +66,24 @@ index 65fb16941fa7e3a9b300696fb6bd2b562bca48cd..5ffd1d7c130e01a4a7516b361e48bfaf
+ mainClass.set(null as String?)
+}
diff --git a/src/main/java/io/papermc/paper/plugin/PluginInitializerManager.java b/src/main/java/io/papermc/paper/plugin/PluginInitializerManager.java
index 708e5bb9bbf0476fcc2c4b92c6830b094703b43e..bb1cfa8ea8b11fc36ea72c8e382b8554bccd0ce5 100644
index 708e5bb9bbf0476fcc2c4b92c6830b094703b43e..6f14cb9a73faa1d0ae2939d08809d9f6c2a99e1d 100644
--- a/src/main/java/io/papermc/paper/plugin/PluginInitializerManager.java
+++ b/src/main/java/io/papermc/paper/plugin/PluginInitializerManager.java
@@ -6,10 +6,10 @@ import io.papermc.paper.plugin.entrypoint.Entrypoint;
@@ -6,10 +6,12 @@ import io.papermc.paper.plugin.entrypoint.Entrypoint;
import io.papermc.paper.plugin.entrypoint.LaunchEntryPointHandler;
import io.papermc.paper.plugin.provider.PluginProvider;
import io.papermc.paper.plugin.provider.type.paper.PaperPluginParent;
+import io.papermc.paper.pluginremap.PluginRemapper;
+import java.util.function.Function;
import joptsimple.OptionSet;
import net.minecraft.server.dedicated.DedicatedServer;
import org.bukkit.configuration.file.YamlConfiguration;
-import org.bukkit.craftbukkit.CraftServer;
+import org.bukkit.plugin.java.LibraryLoader;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.slf4j.Logger;
@@ -25,10 +25,14 @@ public class PluginInitializerManager {
@@ -25,10 +27,15 @@ public class PluginInitializerManager {
private static PluginInitializerManager impl;
private final Path pluginDirectory;
private final Path updateDirectory;
@ -93,10 +95,11 @@ index 708e5bb9bbf0476fcc2c4b92c6830b094703b43e..bb1cfa8ea8b11fc36ea72c8e382b8554
+ this.pluginRemapper = Boolean.getBoolean("paper.disable-plugin-rewriting")
+ ? null
+ : PluginRemapper.create(pluginDirectory);
+ LibraryLoader.REMAPPER = this.pluginRemapper == null ? Function.identity() : this.pluginRemapper::remapLibraries;
}
private static PluginInitializerManager parse(@NotNull final OptionSet minecraftOptionSet) throws Exception {
@@ -96,6 +100,7 @@ public class PluginInitializerManager {
@@ -96,6 +103,7 @@ public class PluginInitializerManager {
public static void load(OptionSet optionSet) throws Exception {
// We have to load the bukkit configuration inorder to get the update folder location.
io.papermc.paper.plugin.PluginInitializerManager pluginSystem = io.papermc.paper.plugin.PluginInitializerManager.init(optionSet);
@ -104,6 +107,31 @@ index 708e5bb9bbf0476fcc2c4b92c6830b094703b43e..bb1cfa8ea8b11fc36ea72c8e382b8554
// Register the default plugin directory
io.papermc.paper.plugin.util.EntrypointUtil.registerProvidersFromSource(io.papermc.paper.plugin.provider.source.DirectoryProviderSource.INSTANCE, pluginSystem.pluginDirectoryPath());
diff --git a/src/main/java/io/papermc/paper/plugin/loader/PaperClasspathBuilder.java b/src/main/java/io/papermc/paper/plugin/loader/PaperClasspathBuilder.java
index f38ecd7f65dc24e4a3f0bc675e3730287ac353f1..f576060c8fe872772bbafe2016fc9b83a3c095f1 100644
--- a/src/main/java/io/papermc/paper/plugin/loader/PaperClasspathBuilder.java
+++ b/src/main/java/io/papermc/paper/plugin/loader/PaperClasspathBuilder.java
@@ -1,5 +1,6 @@
package io.papermc.paper.plugin.loader;
+import io.papermc.paper.plugin.PluginInitializerManager;
import io.papermc.paper.plugin.bootstrap.PluginProviderContext;
import io.papermc.paper.plugin.loader.library.ClassPathLibrary;
import io.papermc.paper.plugin.loader.library.PaperLibraryStore;
@@ -45,9 +46,12 @@ public class PaperClasspathBuilder implements PluginClasspathBuilder {
}
List<Path> paths = paperLibraryStore.getPaths();
+ if (PluginInitializerManager.instance().pluginRemapper != null) {
+ paths = PluginInitializerManager.instance().pluginRemapper.remapLibraries(paths);
+ }
URL[] urls = new URL[paths.size()];
for (int i = 0; i < paths.size(); i++) {
- Path path = paperLibraryStore.getPaths().get(i);
+ Path path = paths.get(i);
try {
urls[i] = path.toUri().toURL();
} catch (MalformedURLException e) {
diff --git a/src/main/java/io/papermc/paper/plugin/provider/source/DirectoryProviderSource.java b/src/main/java/io/papermc/paper/plugin/provider/source/DirectoryProviderSource.java
index 226f457db6c1461c943c157b2b91e7450abc9dc6..0846d3a904e470ae1920c5c8be3df9c5dfc3de27 100644
--- a/src/main/java/io/papermc/paper/plugin/provider/source/DirectoryProviderSource.java
@ -347,10 +375,10 @@ index 0000000000000000000000000000000000000000..3a5bb5d2a45654385ca0bc15c81ef953
+}
diff --git a/src/main/java/io/papermc/paper/pluginremap/PluginRemapper.java b/src/main/java/io/papermc/paper/pluginremap/PluginRemapper.java
new file mode 100644
index 0000000000000000000000000000000000000000..6f1e4ae352dcc6aacd9703b1653701f93974d1bd
index 0000000000000000000000000000000000000000..a1ce1307b2834f2415bdddbf42d80e2d69a480e1
--- /dev/null
+++ b/src/main/java/io/papermc/paper/pluginremap/PluginRemapper.java
@@ -0,0 +1,371 @@
@@ -0,0 +1,433 @@
+package io.papermc.paper.pluginremap;
+
+import com.google.common.util.concurrent.ThreadFactoryBuilder;
@ -397,6 +425,7 @@ index 0000000000000000000000000000000000000000..6f1e4ae352dcc6aacd9703b1653701f9
+ public static final boolean DEBUG_LOGGING = Boolean.getBoolean("Paper.PluginRemapperDebug");
+ private static final String PAPER_REMAPPED = ".paper-remapped";
+ private static final String UNKNOWN_ORIGIN = "unknown-origin";
+ private static final String LIBRARIES = "libraries";
+ private static final String EXTRA_PLUGINS = "extra-plugins";
+ private static final String REMAP_CLASSPATH = "remap-classpath";
+ private static final String REVERSED_MAPPINGS = "mappings/reversed";
@ -407,6 +436,7 @@ index 0000000000000000000000000000000000000000..6f1e4ae352dcc6aacd9703b1653701f9
+ private final RemappedPluginIndex remappedPlugins;
+ private final RemappedPluginIndex extraPlugins;
+ private final UnknownOriginRemappedPluginIndex unknownOrigin;
+ private final UnknownOriginRemappedPluginIndex libraries;
+ private @Nullable CompletableFuture<IMappingFile> reversedMappings;
+
+ public PluginRemapper(final Path pluginsDir) {
@ -418,6 +448,7 @@ index 0000000000000000000000000000000000000000..6f1e4ae352dcc6aacd9703b1653701f9
+ this.remappedPlugins = new RemappedPluginIndex(remappedPlugins, false);
+ this.extraPlugins = new RemappedPluginIndex(this.remappedPlugins.dir().resolve(EXTRA_PLUGINS), true);
+ this.unknownOrigin = new UnknownOriginRemappedPluginIndex(this.remappedPlugins.dir().resolve(UNKNOWN_ORIGIN));
+ this.libraries = new UnknownOriginRemappedPluginIndex(this.remappedPlugins.dir().resolve(LIBRARIES));
+ }
+
+ public static @Nullable PluginRemapper create(final Path pluginsDir) {
@ -446,6 +477,7 @@ index 0000000000000000000000000000000000000000..6f1e4ae352dcc6aacd9703b1653701f9
+ this.remappedPlugins.write();
+ this.extraPlugins.write();
+ this.unknownOrigin.write(clean);
+ this.libraries.write(clean);
+ }
+
+ // Called on startup and reload
@ -465,6 +497,29 @@ index 0000000000000000000000000000000000000000..6f1e4ae352dcc6aacd9703b1653701f9
+ this.save(false);
+ }
+
+ public List<Path> remapLibraries(final List<Path> libraries) {
+ final List<CompletableFuture<Path>> tasks = new ArrayList<>();
+ for (final Path lib : libraries) {
+ if (!lib.getFileName().toString().endsWith(".jar")) {
+ if (DEBUG_LOGGING) {
+ LOGGER.info("Library '{}' is not a jar.", libraries);
+ }
+ tasks.add(CompletableFuture.completedFuture(lib));
+ continue;
+ }
+ final @Nullable Path cached = this.libraries.getIfPresent(lib);
+ if (cached != null) {
+ if (DEBUG_LOGGING) {
+ LOGGER.info("Library '{}' has not changed since last remap.", libraries);
+ }
+ tasks.add(CompletableFuture.completedFuture(cached));
+ continue;
+ }
+ tasks.add(this.remapLibrary(this.libraries, lib));
+ }
+ return waitForAll(tasks);
+ }
+
+ public Path rewritePlugin(final Path plugin) {
+ // Already remapped
+ if (plugin.getParent().equals(this.remappedPlugins.dir())
@ -585,6 +640,20 @@ index 0000000000000000000000000000000000000000..6f1e4ae352dcc6aacd9703b1653701f9
+ }, executor).thenCompose(f -> f);
+ }
+
+ private CompletableFuture<Path> remapPlugin(
+ final RemappedPluginIndex index,
+ final Path inputFile
+ ) {
+ return this.remap(index, inputFile, false);
+ }
+
+ private CompletableFuture<Path> remapLibrary(
+ final RemappedPluginIndex index,
+ final Path inputFile
+ ) {
+ return this.remap(index, inputFile, true);
+ }
+
+ /**
+ * Returns the remapped file if remapping was necessary, otherwise null.
+ *
@ -592,7 +661,11 @@ index 0000000000000000000000000000000000000000..6f1e4ae352dcc6aacd9703b1653701f9
+ * @param inputFile input file
+ * @return remapped file, or inputFile if no remapping was necessary
+ */
+ private CompletableFuture<Path> remapPlugin(final RemappedPluginIndex index, final Path inputFile) {
+ private CompletableFuture<Path> remap(
+ final RemappedPluginIndex index,
+ final Path inputFile,
+ final boolean library
+ ) {
+ final Path destination = index.input(inputFile);
+
+ try (final FileSystem fs = FileSystems.newFileSystem(inputFile, new HashMap<>())) {
@ -608,18 +681,35 @@ index 0000000000000000000000000000000000000000..6f1e4ae352dcc6aacd9703b1653701f9
+ } else {
+ ns = null;
+ }
+ if (ns != null && (ns.equals(InsertManifestAttribute.MOJANG_NAMESPACE) || ns.equals(InsertManifestAttribute.MOJANG_PLUS_YARN_NAMESPACE))) {
+ if (DEBUG_LOGGING) {
+ LOGGER.info("Plugin '{}' is already Mojang mapped.", inputFile);
+ final boolean mojangMappedManifest = ns != null && (ns.equals(InsertManifestAttribute.MOJANG_NAMESPACE) || ns.equals(InsertManifestAttribute.MOJANG_PLUS_YARN_NAMESPACE));
+ if (library) {
+ if (mojangMappedManifest) {
+ if (DEBUG_LOGGING) {
+ LOGGER.info("Library '{}' is already Mojang mapped.", inputFile);
+ }
+ index.skip(inputFile);
+ return CompletableFuture.completedFuture(inputFile);
+ } else if (ns == null) {
+ if (DEBUG_LOGGING) {
+ LOGGER.info("Library '{}' does not specify a mappings namespace (not remapping).", inputFile);
+ }
+ index.skip(inputFile);
+ return CompletableFuture.completedFuture(inputFile);
+ }
+ index.skip(inputFile);
+ return CompletableFuture.completedFuture(inputFile);
+ } else if (ns == null && Files.exists(fs.getPath(PluginFileType.PAPER_PLUGIN_YML))) {
+ if (DEBUG_LOGGING) {
+ LOGGER.info("Plugin '{}' is a Paper plugin with no namespace specified.", inputFile);
+ } else {
+ if (mojangMappedManifest) {
+ if (DEBUG_LOGGING) {
+ LOGGER.info("Plugin '{}' is already Mojang mapped.", inputFile);
+ }
+ index.skip(inputFile);
+ return CompletableFuture.completedFuture(inputFile);
+ } else if (ns == null && Files.exists(fs.getPath(PluginFileType.PAPER_PLUGIN_YML))) {
+ if (DEBUG_LOGGING) {
+ LOGGER.info("Plugin '{}' is a Paper plugin with no namespace specified.", inputFile);
+ }
+ index.skip(inputFile);
+ return CompletableFuture.completedFuture(inputFile);
+ }
+ index.skip(inputFile);
+ return CompletableFuture.completedFuture(inputFile);
+ }
+ } catch (final IOException ex) {
+ throw new RuntimeException("Failed to open plugin jar " + inputFile, ex);
@ -643,7 +733,7 @@ index 0000000000000000000000000000000000000000..6f1e4ae352dcc6aacd9703b1653701f9
+ } catch (final Exception ex) {
+ throw new RuntimeException("Failed to remap plugin jar '" + inputFile + "'", ex);
+ }
+ LOGGER.info("Done remapping plugin '{}' in {}ms.", inputFile, System.currentTimeMillis() - start);
+ LOGGER.info("Done remapping {} '{}' in {}ms.", library ? "library" : "plugin", inputFile, System.currentTimeMillis() - start);
+ return destination;
+ }, this.threadPool);
+ }

255
patches/server/0022-Remap-reflection-calls-in-plugins-using-internals.patch
View file

@ -43,6 +43,197 @@ index 893ad5e7c2d32ccd64962d95d146bbd317c28ab8..3d73ea0e63c97b2b08e719b7be7af389
if (mojName == null && MOJANG_TO_OBF.containsKey(name)) {
mojName = name;
}
diff --git a/src/main/java/io/papermc/paper/plugin/entrypoint/classloader/BytecodeModifyingURLClassLoader.java b/src/main/java/io/papermc/paper/plugin/entrypoint/classloader/BytecodeModifyingURLClassLoader.java
new file mode 100644
index 0000000000000000000000000000000000000000..405416dc3d1c8c58b4e0c880d8751ca319188f62
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/entrypoint/classloader/BytecodeModifyingURLClassLoader.java
@@ -0,0 +1,185 @@
+package io.papermc.paper.plugin.entrypoint.classloader;
+
+import io.papermc.paper.pluginremap.reflect.ReflectionRemapper;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.UncheckedIOException;
+import java.net.JarURLConnection;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.security.CodeSigner;
+import java.security.CodeSource;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.function.Function;
+import java.util.jar.Attributes;
+import java.util.jar.Manifest;
+import org.checkerframework.checker.nullness.qual.Nullable;
+import org.objectweb.asm.ClassReader;
+import org.objectweb.asm.ClassVisitor;
+import org.objectweb.asm.ClassWriter;
+
+import static java.util.Objects.requireNonNullElse;
+
+public final class BytecodeModifyingURLClassLoader extends URLClassLoader {
+ static {
+ ClassLoader.registerAsParallelCapable();
+ }
+
+ private static final Object MISSING_MANIFEST = new Object();
+
+ private final Function<byte[], byte[]> modifier;
+ private final Map<String, Object> manifests = new ConcurrentHashMap<>();
+
+ public BytecodeModifyingURLClassLoader(
+ final URL[] urls,
+ final ClassLoader parent,
+ final Function<byte[], byte[]> modifier
+ ) {
+ super(urls, parent);
+ this.modifier = modifier;
+ }
+
+ public BytecodeModifyingURLClassLoader(
+ final URL[] urls,
+ final ClassLoader parent
+ ) {
+ this(urls, parent, bytes -> {
+ final ClassReader classReader = new ClassReader(bytes);
+ final ClassWriter classWriter = new ClassWriter(classReader, 0);
+ final ClassVisitor visitor = ReflectionRemapper.visitor(classWriter);
+ if (visitor == classWriter) {
+ return bytes;
+ }
+ classReader.accept(visitor, 0);
+ return classWriter.toByteArray();
+ });
+ }
+
+ @Override
+ protected Class<?> findClass(final String name) throws ClassNotFoundException {
+ final Class<?> result;
+ final String path = name.replace('.', '/').concat(".class");
+ final URL url = this.findResource(path);
+ if (url != null) {
+ try {
+ result = this.defineClass(name, url);
+ } catch (final IOException e) {
+ throw new ClassNotFoundException(name, e);
+ }
+ } else {
+ result = null;
+ }
+ if (result == null) {
+ throw new ClassNotFoundException(name);
+ }
+ return result;
+ }
+
+ private Class<?> defineClass(String name, URL url) throws IOException {
+ int i = name.lastIndexOf('.');
+ if (i != -1) {
+ String pkgname = name.substring(0, i);
+ // Check if package already loaded.
+ final @Nullable Manifest man = this.manifestFor(url);
+ if (this.getAndVerifyPackage(pkgname, man, url) == null) {
+ try {
+ if (man != null) {
+ this.definePackage(pkgname, man, url);
+ } else {
+ this.definePackage(pkgname, null, null, null, null, null, null, null);
+ }
+ } catch (IllegalArgumentException iae) {
+ // parallel-capable class loaders: re-verify in case of a
+ // race condition
+ if (this.getAndVerifyPackage(pkgname, man, url) == null) {
+ // Should never happen
+ throw new AssertionError("Cannot find package " +
+ pkgname);
+ }
+ }
+ }
+ }
+ final byte[] bytes;
+ try (final InputStream is = url.openStream()) {
+ bytes = is.readAllBytes();
+ }
+
+ final byte[] modified = this.modifier.apply(bytes);
+
+ final CodeSource cs = new CodeSource(url, (CodeSigner[]) null);
+ return this.defineClass(name, modified, 0, modified.length, cs);
+ }
+
+ private Package getAndVerifyPackage(
+ String pkgname,
+ Manifest man, URL url
+ ) {
+ Package pkg = getDefinedPackage(pkgname);
+ if (pkg != null) {
+ // Package found, so check package sealing.
+ if (pkg.isSealed()) {
+ // Verify that code source URL is the same.
+ if (!pkg.isSealed(url)) {
+ throw new SecurityException(
+ "sealing violation: package " + pkgname + " is sealed");
+ }
+ } else {
+ // Make sure we are not attempting to seal the package
+ // at this code source URL.
+ if ((man != null) && this.isSealed(pkgname, man)) {
+ throw new SecurityException(
+ "sealing violation: can't seal package " + pkgname +
+ ": already loaded");
+ }
+ }
+ }
+ return pkg;
+ }
+
+ private boolean isSealed(String name, Manifest man) {
+ Attributes attr = man.getAttributes(name.replace('.', '/').concat("/"));
+ String sealed = null;
+ if (attr != null) {
+ sealed = attr.getValue(Attributes.Name.SEALED);
+ }
+ if (sealed == null) {
+ if ((attr = man.getMainAttributes()) != null) {
+ sealed = attr.getValue(Attributes.Name.SEALED);
+ }
+ }
+ return "true".equalsIgnoreCase(sealed);
+ }
+
+ private @Nullable Manifest manifestFor(final URL url) throws IOException {
+ Manifest man = null;
+ if (url.getProtocol().equals("jar")) {
+ try {
+ final Object computedManifest = this.manifests.computeIfAbsent(jarName(url), $ -> {
+ try {
+ final Manifest m = ((JarURLConnection) url.openConnection()).getManifest();
+ return requireNonNullElse(m, MISSING_MANIFEST);
+ } catch (final IOException e) {
+ throw new UncheckedIOException(e);
+ }
+ });
+ if (computedManifest instanceof Manifest found) {
+ man = found;
+ }
+ } catch (final UncheckedIOException e) {
+ throw e.getCause();
+ } catch (final IllegalArgumentException e) {
+ throw new IOException(e);
+ }
+ }
+ return man;
+ }
+
+ private static String jarName(final URL sourceUrl) {
+ final int exclamationIdx = sourceUrl.getPath().lastIndexOf('!');
+ if (exclamationIdx != -1) {
+ return sourceUrl.getPath().substring(0, exclamationIdx);
+ }
+ throw new IllegalArgumentException("Could not find jar for URL " + sourceUrl);
+ }
+}
diff --git a/src/main/java/io/papermc/paper/plugin/entrypoint/classloader/PaperClassloaderBytecodeModifier.java b/src/main/java/io/papermc/paper/plugin/entrypoint/classloader/PaperClassloaderBytecodeModifier.java
index f9a2c55a354c877749db3f92956de802ae575788..39182cdd17473da0123dc7172dce507eab29fedc 100644
--- a/src/main/java/io/papermc/paper/plugin/entrypoint/classloader/PaperClassloaderBytecodeModifier.java
@ -66,6 +257,70 @@ index f9a2c55a354c877749db3f92956de802ae575788..39182cdd17473da0123dc7172dce507e
+ return classWriter.toByteArray();
}
}
diff --git a/src/main/java/io/papermc/paper/plugin/loader/PaperClasspathBuilder.java b/src/main/java/io/papermc/paper/plugin/loader/PaperClasspathBuilder.java
index f576060c8fe872772bbafe2016fc9b83a3c095f1..82032370e7896b621e37ee3726016440e177619f 100644
--- a/src/main/java/io/papermc/paper/plugin/loader/PaperClasspathBuilder.java
+++ b/src/main/java/io/papermc/paper/plugin/loader/PaperClasspathBuilder.java
@@ -2,12 +2,11 @@ package io.papermc.paper.plugin.loader;
import io.papermc.paper.plugin.PluginInitializerManager;
import io.papermc.paper.plugin.bootstrap.PluginProviderContext;
+import io.papermc.paper.plugin.entrypoint.classloader.BytecodeModifyingURLClassLoader;
+import io.papermc.paper.plugin.entrypoint.classloader.PaperPluginClassLoader;
import io.papermc.paper.plugin.loader.library.ClassPathLibrary;
import io.papermc.paper.plugin.loader.library.PaperLibraryStore;
-import io.papermc.paper.plugin.entrypoint.classloader.PaperPluginClassLoader;
import io.papermc.paper.plugin.provider.configuration.PaperPluginMeta;
-import org.jetbrains.annotations.NotNull;
-
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
@@ -17,6 +16,7 @@ import java.util.ArrayList;
import java.util.List;
import java.util.jar.JarFile;
import java.util.logging.Logger;
+import org.jetbrains.annotations.NotNull;
public class PaperClasspathBuilder implements PluginClasspathBuilder {
@@ -60,7 +60,8 @@ public class PaperClasspathBuilder implements PluginClasspathBuilder {
}
try {
- return new PaperPluginClassLoader(logger, source, jarFile, configuration, this.getClass().getClassLoader(), new URLClassLoader(urls, getClass().getClassLoader()));
+ final URLClassLoader libraryLoader = new BytecodeModifyingURLClassLoader(urls, this.getClass().getClassLoader());
+ return new PaperPluginClassLoader(logger, source, jarFile, configuration, this.getClass().getClassLoader(), libraryLoader);
} catch (IOException exception) {
throw new RuntimeException(exception);
}
diff --git a/src/main/java/io/papermc/paper/plugin/provider/type/spigot/SpigotPluginProviderFactory.java b/src/main/java/io/papermc/paper/plugin/provider/type/spigot/SpigotPluginProviderFactory.java
index bdd9bc8a414719b9f1d6f01f90539ddb8603a878..31f05a7336ea124d24a5059652a2950a9f672758 100644
--- a/src/main/java/io/papermc/paper/plugin/provider/type/spigot/SpigotPluginProviderFactory.java
+++ b/src/main/java/io/papermc/paper/plugin/provider/type/spigot/SpigotPluginProviderFactory.java
@@ -1,9 +1,11 @@
package io.papermc.paper.plugin.provider.type.spigot;
+import io.papermc.paper.plugin.entrypoint.classloader.BytecodeModifyingURLClassLoader;
import io.papermc.paper.plugin.provider.configuration.serializer.constraints.PluginConfigConstraints;
import io.papermc.paper.plugin.provider.type.PluginTypeFactory;
import org.bukkit.plugin.InvalidDescriptionException;
import org.bukkit.plugin.PluginDescriptionFile;
+import org.bukkit.plugin.java.LibraryLoader;
import org.yaml.snakeyaml.error.YAMLException;
import java.io.IOException;
@@ -15,6 +17,10 @@ import java.util.jar.JarFile;
class SpigotPluginProviderFactory implements PluginTypeFactory<SpigotPluginProvider, PluginDescriptionFile> {
+ static {
+ LibraryLoader.LIBRARY_LOADER_FACTORY = BytecodeModifyingURLClassLoader::new;
+ }
+
@Override
public SpigotPluginProvider build(JarFile file, PluginDescriptionFile configuration, Path source) throws InvalidDescriptionException {
// Copied from SimplePluginManager#loadPlugins
diff --git a/src/main/java/io/papermc/paper/pluginremap/reflect/PaperReflection.java b/src/main/java/io/papermc/paper/pluginremap/reflect/PaperReflection.java
new file mode 100644
index 0000000000000000000000000000000000000000..c653d1f5af8b407cfba715e6027dbb695046892a

261
patches/server/1046-Modify-library-loader-jars-bytecode.patch
View file

@ -1,261 +0,0 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jason Penilla <11360596+jpenilla@users.noreply.github.com>
Date: Sun, 28 Apr 2024 11:12:14 -0700
Subject: [PATCH] Modify library loader jars bytecode
diff --git a/src/main/java/io/papermc/paper/plugin/entrypoint/classloader/BytecodeModifyingURLClassLoader.java b/src/main/java/io/papermc/paper/plugin/entrypoint/classloader/BytecodeModifyingURLClassLoader.java
new file mode 100644
index 0000000000000000000000000000000000000000..405416dc3d1c8c58b4e0c880d8751ca319188f62
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/entrypoint/classloader/BytecodeModifyingURLClassLoader.java
@@ -0,0 +1,185 @@
+package io.papermc.paper.plugin.entrypoint.classloader;
+
+import io.papermc.paper.pluginremap.reflect.ReflectionRemapper;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.UncheckedIOException;
+import java.net.JarURLConnection;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.security.CodeSigner;
+import java.security.CodeSource;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.function.Function;
+import java.util.jar.Attributes;
+import java.util.jar.Manifest;
+import org.checkerframework.checker.nullness.qual.Nullable;
+import org.objectweb.asm.ClassReader;
+import org.objectweb.asm.ClassVisitor;
+import org.objectweb.asm.ClassWriter;
+
+import static java.util.Objects.requireNonNullElse;
+
+public final class BytecodeModifyingURLClassLoader extends URLClassLoader {
+ static {
+ ClassLoader.registerAsParallelCapable();
+ }
+
+ private static final Object MISSING_MANIFEST = new Object();
+
+ private final Function<byte[], byte[]> modifier;
+ private final Map<String, Object> manifests = new ConcurrentHashMap<>();
+
+ public BytecodeModifyingURLClassLoader(
+ final URL[] urls,
+ final ClassLoader parent,
+ final Function<byte[], byte[]> modifier
+ ) {
+ super(urls, parent);
+ this.modifier = modifier;
+ }
+
+ public BytecodeModifyingURLClassLoader(
+ final URL[] urls,
+ final ClassLoader parent
+ ) {
+ this(urls, parent, bytes -> {
+ final ClassReader classReader = new ClassReader(bytes);
+ final ClassWriter classWriter = new ClassWriter(classReader, 0);
+ final ClassVisitor visitor = ReflectionRemapper.visitor(classWriter);
+ if (visitor == classWriter) {
+ return bytes;
+ }
+ classReader.accept(visitor, 0);
+ return classWriter.toByteArray();
+ });
+ }
+
+ @Override
+ protected Class<?> findClass(final String name) throws ClassNotFoundException {
+ final Class<?> result;
+ final String path = name.replace('.', '/').concat(".class");
+ final URL url = this.findResource(path);
+ if (url != null) {
+ try {
+ result = this.defineClass(name, url);
+ } catch (final IOException e) {
+ throw new ClassNotFoundException(name, e);
+ }
+ } else {
+ result = null;
+ }
+ if (result == null) {
+ throw new ClassNotFoundException(name);
+ }
+ return result;
+ }
+
+ private Class<?> defineClass(String name, URL url) throws IOException {
+ int i = name.lastIndexOf('.');
+ if (i != -1) {
+ String pkgname = name.substring(0, i);
+ // Check if package already loaded.
+ final @Nullable Manifest man = this.manifestFor(url);
+ if (this.getAndVerifyPackage(pkgname, man, url) == null) {
+ try {
+ if (man != null) {
+ this.definePackage(pkgname, man, url);
+ } else {
+ this.definePackage(pkgname, null, null, null, null, null, null, null);
+ }
+ } catch (IllegalArgumentException iae) {
+ // parallel-capable class loaders: re-verify in case of a
+ // race condition
+ if (this.getAndVerifyPackage(pkgname, man, url) == null) {
+ // Should never happen
+ throw new AssertionError("Cannot find package " +
+ pkgname);
+ }
+ }
+ }
+ }
+ final byte[] bytes;
+ try (final InputStream is = url.openStream()) {
+ bytes = is.readAllBytes();
+ }
+
+ final byte[] modified = this.modifier.apply(bytes);
+
+ final CodeSource cs = new CodeSource(url, (CodeSigner[]) null);
+ return this.defineClass(name, modified, 0, modified.length, cs);
+ }
+
+ private Package getAndVerifyPackage(
+ String pkgname,
+ Manifest man, URL url
+ ) {
+ Package pkg = getDefinedPackage(pkgname);
+ if (pkg != null) {
+ // Package found, so check package sealing.
+ if (pkg.isSealed()) {
+ // Verify that code source URL is the same.
+ if (!pkg.isSealed(url)) {
+ throw new SecurityException(
+ "sealing violation: package " + pkgname + " is sealed");
+ }
+ } else {
+ // Make sure we are not attempting to seal the package
+ // at this code source URL.
+ if ((man != null) && this.isSealed(pkgname, man)) {
+ throw new SecurityException(
+ "sealing violation: can't seal package " + pkgname +
+ ": already loaded");
+ }
+ }
+ }
+ return pkg;
+ }
+
+ private boolean isSealed(String name, Manifest man) {
+ Attributes attr = man.getAttributes(name.replace('.', '/').concat("/"));
+ String sealed = null;
+ if (attr != null) {
+ sealed = attr.getValue(Attributes.Name.SEALED);
+ }
+ if (sealed == null) {
+ if ((attr = man.getMainAttributes()) != null) {
+ sealed = attr.getValue(Attributes.Name.SEALED);
+ }
+ }
+ return "true".equalsIgnoreCase(sealed);
+ }
+
+ private @Nullable Manifest manifestFor(final URL url) throws IOException {
+ Manifest man = null;
+ if (url.getProtocol().equals("jar")) {
+ try {
+ final Object computedManifest = this.manifests.computeIfAbsent(jarName(url), $ -> {
+ try {
+ final Manifest m = ((JarURLConnection) url.openConnection()).getManifest();
+ return requireNonNullElse(m, MISSING_MANIFEST);
+ } catch (final IOException e) {
+ throw new UncheckedIOException(e);
+ }
+ });
+ if (computedManifest instanceof Manifest found) {
+ man = found;
+ }
+ } catch (final UncheckedIOException e) {
+ throw e.getCause();
+ } catch (final IllegalArgumentException e) {
+ throw new IOException(e);
+ }
+ }
+ return man;
+ }
+
+ private static String jarName(final URL sourceUrl) {
+ final int exclamationIdx = sourceUrl.getPath().lastIndexOf('!');
+ if (exclamationIdx != -1) {
+ return sourceUrl.getPath().substring(0, exclamationIdx);
+ }
+ throw new IllegalArgumentException("Could not find jar for URL " + sourceUrl);
+ }
+}
diff --git a/src/main/java/io/papermc/paper/plugin/loader/PaperClasspathBuilder.java b/src/main/java/io/papermc/paper/plugin/loader/PaperClasspathBuilder.java
index f38ecd7f65dc24e4a3f0bc675e3730287ac353f1..ca6cb891e9da9d7e08f1a82fab212d2063cc9ef6 100644
--- a/src/main/java/io/papermc/paper/plugin/loader/PaperClasspathBuilder.java
+++ b/src/main/java/io/papermc/paper/plugin/loader/PaperClasspathBuilder.java
@@ -1,12 +1,11 @@
package io.papermc.paper.plugin.loader;
import io.papermc.paper.plugin.bootstrap.PluginProviderContext;
+import io.papermc.paper.plugin.entrypoint.classloader.BytecodeModifyingURLClassLoader;
+import io.papermc.paper.plugin.entrypoint.classloader.PaperPluginClassLoader;
import io.papermc.paper.plugin.loader.library.ClassPathLibrary;
import io.papermc.paper.plugin.loader.library.PaperLibraryStore;
-import io.papermc.paper.plugin.entrypoint.classloader.PaperPluginClassLoader;
import io.papermc.paper.plugin.provider.configuration.PaperPluginMeta;
-import org.jetbrains.annotations.NotNull;
-
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
@@ -16,6 +15,7 @@ import java.util.ArrayList;
import java.util.List;
import java.util.jar.JarFile;
import java.util.logging.Logger;
+import org.jetbrains.annotations.NotNull;
public class PaperClasspathBuilder implements PluginClasspathBuilder {
@@ -56,7 +56,8 @@ public class PaperClasspathBuilder implements PluginClasspathBuilder {
}
try {
- return new PaperPluginClassLoader(logger, source, jarFile, configuration, this.getClass().getClassLoader(), new URLClassLoader(urls, getClass().getClassLoader()));
+ final URLClassLoader libraryLoader = new BytecodeModifyingURLClassLoader(urls, this.getClass().getClassLoader());
+ return new PaperPluginClassLoader(logger, source, jarFile, configuration, this.getClass().getClassLoader(), libraryLoader);
} catch (IOException exception) {
throw new RuntimeException(exception);
}
diff --git a/src/main/java/io/papermc/paper/plugin/provider/type/spigot/SpigotPluginProviderFactory.java b/src/main/java/io/papermc/paper/plugin/provider/type/spigot/SpigotPluginProviderFactory.java
index bdd9bc8a414719b9f1d6f01f90539ddb8603a878..31f05a7336ea124d24a5059652a2950a9f672758 100644
--- a/src/main/java/io/papermc/paper/plugin/provider/type/spigot/SpigotPluginProviderFactory.java
+++ b/src/main/java/io/papermc/paper/plugin/provider/type/spigot/SpigotPluginProviderFactory.java
@@ -1,9 +1,11 @@
package io.papermc.paper.plugin.provider.type.spigot;
+import io.papermc.paper.plugin.entrypoint.classloader.BytecodeModifyingURLClassLoader;
import io.papermc.paper.plugin.provider.configuration.serializer.constraints.PluginConfigConstraints;
import io.papermc.paper.plugin.provider.type.PluginTypeFactory;
import org.bukkit.plugin.InvalidDescriptionException;
import org.bukkit.plugin.PluginDescriptionFile;
+import org.bukkit.plugin.java.LibraryLoader;
import org.yaml.snakeyaml.error.YAMLException;
import java.io.IOException;
@@ -15,6 +17,10 @@ import java.util.jar.JarFile;
class SpigotPluginProviderFactory implements PluginTypeFactory<SpigotPluginProvider, PluginDescriptionFile> {
+ static {
+ LibraryLoader.LIBRARY_LOADER_FACTORY = BytecodeModifyingURLClassLoader::new;
+ }
+
@Override
public SpigotPluginProvider build(JarFile file, PluginDescriptionFile configuration, Path source) throws InvalidDescriptionException {
// Copied from SimplePluginManager#loadPlugins