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Paper/patches/server/0015-Deobfuscate-stacktraces-in-log-messages-crash-report.patch
MiniDigger | Martin d8b66dd93d fix: move to jline-terminal-ffm on java 22+ and fall back to jni on 21, fixes #10405 
ffm requires 1) native access allowed (the jdk cracks down on undocumented native access in 22) and 2) reverting the default console back to java.base, so the internal jline doesnt take over
2024-11-18 17:01:08 +01:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jason Penilla <11360596+jpenilla@users.noreply.github.com>
Date: Sun, 20 Jun 2021 18:19:09 -0700
Subject: [PATCH] Deobfuscate stacktraces in log messages, crash reports, and
etc.
diff --git a/build.gradle.kts b/build.gradle.kts
index 3fb47580cd8de02574905384e455d87224864407..653b48c1bc28af6f88ec3bdd11b2d1a683dd3465 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -60,6 +60,7 @@ dependencies {
mockitoAgent("org.mockito:mockito-core:5.14.1") { isTransitive = false } // Paper - configure mockito agent that is needed in newer java versions
testImplementation("org.ow2.asm:asm-tree:9.7.1")
testImplementation("org.junit-pioneer:junit-pioneer:2.2.0") // Paper - CartesianTest
+ implementation("net.neoforged:srgutils:1.0.9") // Paper - mappings handling
}
paperweight {
diff --git a/src/log4jPlugins/java/io/papermc/paper/logging/StacktraceDeobfuscatingRewritePolicy.java b/src/log4jPlugins/java/io/papermc/paper/logging/StacktraceDeobfuscatingRewritePolicy.java
new file mode 100644
index 0000000000000000000000000000000000000000..66b6011ee3684695b2ab9292961c80bf2a420ee9
--- /dev/null
+++ b/src/log4jPlugins/java/io/papermc/paper/logging/StacktraceDeobfuscatingRewritePolicy.java
@@ -0,0 +1,66 @@
+package io.papermc.paper.logging;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.VarHandle;
+import org.apache.logging.log4j.core.Core;
+import org.apache.logging.log4j.core.LogEvent;
+import org.apache.logging.log4j.core.appender.rewrite.RewritePolicy;
+import org.apache.logging.log4j.core.config.plugins.Plugin;
+import org.apache.logging.log4j.core.config.plugins.PluginFactory;
+import org.apache.logging.log4j.core.impl.Log4jLogEvent;
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+@Plugin(
+ name = "StacktraceDeobfuscatingRewritePolicy",
+ category = Core.CATEGORY_NAME,
+ elementType = "rewritePolicy",
+ printObject = true
+)
+public final class StacktraceDeobfuscatingRewritePolicy implements RewritePolicy {
+ private static final MethodHandle DEOBFUSCATE_THROWABLE;
+
+ static {
+ try {
+ final Class<?> cls = Class.forName("io.papermc.paper.util.StacktraceDeobfuscator");
+ final MethodHandles.Lookup lookup = MethodHandles.lookup();
+ final VarHandle instanceHandle = lookup.findStaticVarHandle(cls, "INSTANCE", cls);
+ final Object deobfuscator = instanceHandle.get();
+ DEOBFUSCATE_THROWABLE = lookup
+ .unreflect(cls.getDeclaredMethod("deobfuscateThrowable", Throwable.class))
+ .bindTo(deobfuscator);
+ } catch (final ReflectiveOperationException ex) {
+ throw new IllegalStateException(ex);
+ }
+ }
+
+ private StacktraceDeobfuscatingRewritePolicy() {
+ }
+
+ @Override
+ public @NonNull LogEvent rewrite(final @NonNull LogEvent rewrite) {
+ final Throwable thrown = rewrite.getThrown();
+ if (thrown != null) {
+ deobfuscateThrowable(thrown);
+ return new Log4jLogEvent.Builder(rewrite)
+ .setThrownProxy(null)
+ .build();
+ }
+ return rewrite;
+ }
+
+ private static void deobfuscateThrowable(final Throwable thrown) {
+ try {
+ DEOBFUSCATE_THROWABLE.invoke(thrown);
+ } catch (final Error e) {
+ throw e;
+ } catch (final Throwable e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ @PluginFactory
+ public static @NonNull StacktraceDeobfuscatingRewritePolicy createPolicy() {
+ return new StacktraceDeobfuscatingRewritePolicy();
+ }
+}
diff --git a/src/main/java/io/papermc/paper/util/ObfHelper.java b/src/main/java/io/papermc/paper/util/ObfHelper.java
new file mode 100644
index 0000000000000000000000000000000000000000..9e6d48335b37fa5204bfebf396d748089884555b
--- /dev/null
+++ b/src/main/java/io/papermc/paper/util/ObfHelper.java
@@ -0,0 +1,156 @@
+package io.papermc.paper.util;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+import java.util.stream.Collectors;
+import net.neoforged.srgutils.IMappingFile;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.checker.nullness.qual.Nullable;
+import org.checkerframework.framework.qual.DefaultQualifier;
+
+@DefaultQualifier(NonNull.class)
+public enum ObfHelper {
+ INSTANCE;
+
+ private final @Nullable Map<String, ClassMapping> mappingsByObfName;
+ private final @Nullable Map<String, ClassMapping> mappingsByMojangName;
+
+ ObfHelper() {
+ final @Nullable Set<ClassMapping> maps = loadMappingsIfPresent();
+ if (maps != null) {
+ this.mappingsByObfName = maps.stream().collect(Collectors.toUnmodifiableMap(ClassMapping::obfName, map -> map));
+ this.mappingsByMojangName = maps.stream().collect(Collectors.toUnmodifiableMap(ClassMapping::mojangName, map -> map));
+ } else {
+ this.mappingsByObfName = null;
+ this.mappingsByMojangName = null;
+ }
+ }
+
+ public @Nullable Map<String, ClassMapping> mappingsByObfName() {
+ return this.mappingsByObfName;
+ }
+
+ public @Nullable Map<String, ClassMapping> mappingsByMojangName() {
+ return this.mappingsByMojangName;
+ }
+
+ /**
+ * Attempts to get the obf name for a given class by its Mojang name. Will
+ * return the input string if mappings are not present.
+ *
+ * @param fullyQualifiedMojangName fully qualified class name (dotted)
+ * @return mapped or original fully qualified (dotted) class name
+ */
+ public String reobfClassName(final String fullyQualifiedMojangName) {
+ if (this.mappingsByMojangName == null) {
+ return fullyQualifiedMojangName;
+ }
+
+ final ClassMapping map = this.mappingsByMojangName.get(fullyQualifiedMojangName);
+ if (map == null) {
+ return fullyQualifiedMojangName;
+ }
+
+ return map.obfName();
+ }
+
+ /**
+ * Attempts to get the Mojang name for a given class by its obf name. Will
+ * return the input string if mappings are not present.
+ *
+ * @param fullyQualifiedObfName fully qualified class name (dotted)
+ * @return mapped or original fully qualified (dotted) class name
+ */
+ public String deobfClassName(final String fullyQualifiedObfName) {
+ if (this.mappingsByObfName == null) {
+ return fullyQualifiedObfName;
+ }
+
+ final ClassMapping map = this.mappingsByObfName.get(fullyQualifiedObfName);
+ if (map == null) {
+ return fullyQualifiedObfName;
+ }
+
+ return map.mojangName();
+ }
+
+ private static @Nullable Set<ClassMapping> loadMappingsIfPresent() {
+ try (final @Nullable InputStream mappingsInputStream = ObfHelper.class.getClassLoader().getResourceAsStream("META-INF/mappings/reobf.tiny")) {
+ if (mappingsInputStream == null) {
+ return null;
+ }
+ final IMappingFile mappings = IMappingFile.load(mappingsInputStream); // Mappings are mojang->spigot
+ final Set<ClassMapping> classes = new HashSet<>();
+
+ final StringPool pool = new StringPool();
+ for (final IMappingFile.IClass cls : mappings.getClasses()) {
+ final Map<String, String> methods = new HashMap<>();
+ final Map<String, String> fields = new HashMap<>();
+ final Map<String, String> strippedMethods = new HashMap<>();
+
+ for (final IMappingFile.IMethod methodMapping : cls.getMethods()) {
+ methods.put(
+ pool.string(methodKey(
+ Objects.requireNonNull(methodMapping.getMapped()),
+ Objects.requireNonNull(methodMapping.getMappedDescriptor())
+ )),
+ pool.string(Objects.requireNonNull(methodMapping.getOriginal()))
+ );
+
+ strippedMethods.put(
+ pool.string(pool.string(strippedMethodKey(
+ methodMapping.getMapped(),
+ methodMapping.getDescriptor()
+ ))),
+ pool.string(methodMapping.getOriginal())
+ );
+ }
+ for (final IMappingFile.IField field : cls.getFields()) {
+ fields.put(
+ pool.string(field.getMapped()),
+ pool.string(field.getOriginal())
+ );
+ }
+
+ final ClassMapping map = new ClassMapping(
+ Objects.requireNonNull(cls.getMapped()).replace('/', '.'),
+ Objects.requireNonNull(cls.getOriginal()).replace('/', '.'),
+ Map.copyOf(methods),
+ Map.copyOf(fields),
+ Map.copyOf(strippedMethods)
+ );
+ classes.add(map);
+ }
+
+ return Set.copyOf(classes);
+ } catch (final IOException ex) {
+ System.err.println("Failed to load mappings.");
+ ex.printStackTrace();
+ return null;
+ }
+ }
+
+ public static String strippedMethodKey(final String methodName, final String methodDescriptor) {
+ final String methodKey = methodKey(methodName, methodDescriptor);
+ final int returnDescriptorEnd = methodKey.indexOf(')');
+ return methodKey.substring(0, returnDescriptorEnd + 1);
+ }
+
+ public static String methodKey(final String methodName, final String methodDescriptor) {
+ return methodName + methodDescriptor;
+ }
+
+ public record ClassMapping(
+ String obfName,
+ String mojangName,
+ Map<String, String> methodsByObf,
+ Map<String, String> fieldsByObf,
+ // obf name with mapped desc to mapped name. return value is excluded from desc as reflection doesn't use it
+ Map<String, String> strippedMethods
+ ) {}
+}
diff --git a/src/main/java/io/papermc/paper/util/StacktraceDeobfuscator.java b/src/main/java/io/papermc/paper/util/StacktraceDeobfuscator.java
new file mode 100644
index 0000000000000000000000000000000000000000..242811578a786e3807a1a7019d472d5a68f87116
--- /dev/null
+++ b/src/main/java/io/papermc/paper/util/StacktraceDeobfuscator.java
@@ -0,0 +1,144 @@
+package io.papermc.paper.util;
+
+import io.papermc.paper.configuration.GlobalConfiguration;
+import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
+import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Collections;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.checker.nullness.qual.Nullable;
+import org.checkerframework.framework.qual.DefaultQualifier;
+import org.objectweb.asm.ClassReader;
+import org.objectweb.asm.ClassVisitor;
+import org.objectweb.asm.Label;
+import org.objectweb.asm.MethodVisitor;
+import org.objectweb.asm.Opcodes;
+
+@DefaultQualifier(NonNull.class)
+public enum StacktraceDeobfuscator {
+ INSTANCE;
+
+ private final Map<Class<?>, Int2ObjectMap<String>> lineMapCache = Collections.synchronizedMap(new LinkedHashMap<>(128, 0.75f, true) {
+ @Override
+ protected boolean removeEldestEntry(final Map.Entry<Class<?>, Int2ObjectMap<String>> eldest) {
+ return this.size() > 127;
+ }
+ });
+
+ public void deobfuscateThrowable(final Throwable throwable) {
+ if (GlobalConfiguration.get() != null && !GlobalConfiguration.get().logging.deobfuscateStacktraces) { // handle null as true
+ return;
+ }
+
+ throwable.setStackTrace(this.deobfuscateStacktrace(throwable.getStackTrace()));
+ final Throwable cause = throwable.getCause();
+ if (cause != null) {
+ this.deobfuscateThrowable(cause);
+ }
+ for (final Throwable suppressed : throwable.getSuppressed()) {
+ this.deobfuscateThrowable(suppressed);
+ }
+ }
+
+ public StackTraceElement[] deobfuscateStacktrace(final StackTraceElement[] traceElements) {
+ if (GlobalConfiguration.get() != null && !GlobalConfiguration.get().logging.deobfuscateStacktraces) { // handle null as true
+ return traceElements;
+ }
+
+ final @Nullable Map<String, ObfHelper.ClassMapping> mappings = ObfHelper.INSTANCE.mappingsByObfName();
+ if (mappings == null || traceElements.length == 0) {
+ return traceElements;
+ }
+ final StackTraceElement[] result = new StackTraceElement[traceElements.length];
+ for (int i = 0; i < traceElements.length; i++) {
+ final StackTraceElement element = traceElements[i];
+
+ final String className = element.getClassName();
+ final String methodName = element.getMethodName();
+
+ final ObfHelper.ClassMapping classMapping = mappings.get(className);
+ if (classMapping == null) {
+ result[i] = element;
+ continue;
+ }
+
+ final Class<?> clazz;
+ try {
+ clazz = Class.forName(className);
+ } catch (final ClassNotFoundException ex) {
+ throw new RuntimeException(ex);
+ }
+ final @Nullable String methodKey = this.determineMethodForLine(clazz, element.getLineNumber());
+ final @Nullable String mappedMethodName = methodKey == null ? null : classMapping.methodsByObf().get(methodKey);
+
+ result[i] = new StackTraceElement(
+ element.getClassLoaderName(),
+ element.getModuleName(),
+ element.getModuleVersion(),
+ classMapping.mojangName(),
+ mappedMethodName != null ? mappedMethodName : methodName,
+ sourceFileName(classMapping.mojangName()),
+ element.getLineNumber()
+ );
+ }
+ return result;
+ }
+
+ private @Nullable String determineMethodForLine(final Class<?> clazz, final int lineNumber) {
+ return this.lineMapCache.computeIfAbsent(clazz, StacktraceDeobfuscator::buildLineMap).get(lineNumber);
+ }
+
+ private static String sourceFileName(final String fullClassName) {
+ final int dot = fullClassName.lastIndexOf('.');
+ final String className = dot == -1
+ ? fullClassName
+ : fullClassName.substring(dot + 1);
+ final String rootClassName = className.split("\\$")[0];
+ return rootClassName + ".java";
+ }
+
+ private static Int2ObjectMap<String> buildLineMap(final Class<?> key) {
+ final StringPool pool = new StringPool();
+ final Int2ObjectMap<String> lineMap = new Int2ObjectOpenHashMap<>();
+ final class LineCollectingMethodVisitor extends MethodVisitor {
+ private final String name;
+ private final String descriptor;
+
+ LineCollectingMethodVisitor(final String name, final String descriptor) {
+ super(Opcodes.ASM9);
+ this.name = name;
+ this.descriptor = descriptor;
+ }
+
+ @Override
+ public void visitLineNumber(final int line, final Label start) {
+ lineMap.put(line, pool.string(ObfHelper.methodKey(this.name, this.descriptor)));
+ }
+ }
+ final ClassVisitor classVisitor = new ClassVisitor(Opcodes.ASM9) {
+ @Override
+ public MethodVisitor visitMethod(final int access, final String name, final String descriptor, final String signature, final String[] exceptions) {
+ return new LineCollectingMethodVisitor(name, descriptor);
+ }
+ };
+ try {
+ final @Nullable InputStream inputStream = StacktraceDeobfuscator.class.getClassLoader()
+ .getResourceAsStream(key.getName().replace('.', '/') + ".class");
+ if (inputStream == null) {
+ throw new IllegalStateException("Could not find class file: " + key.getName());
+ }
+ final byte[] classData;
+ try (inputStream) {
+ classData = inputStream.readAllBytes();
+ }
+ final ClassReader reader = new ClassReader(classData);
+ reader.accept(classVisitor, 0);
+ } catch (final IOException ex) {
+ throw new RuntimeException(ex);
+ }
+ return lineMap;
+ }
+}
diff --git a/src/main/java/io/papermc/paper/util/StringPool.java b/src/main/java/io/papermc/paper/util/StringPool.java
new file mode 100644
index 0000000000000000000000000000000000000000..c0a486cb46ff30353c3ff09567891cd36238eeb4
--- /dev/null
+++ b/src/main/java/io/papermc/paper/util/StringPool.java
@@ -0,0 +1,34 @@
+package io.papermc.paper.util;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.function.Function;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.framework.qual.DefaultQualifier;
+
+/**
+ * De-duplicates {@link String} instances without using {@link String#intern()}.
+ *
+ * <p>Interning may not be desired as we may want to use the heap for our pool,
+ * so it can be garbage collected as normal, etc.</p>
+ *
+ * <p>Additionally, interning can be slow due to the potentially large size of the
+ * pool (as it is shared for the entire JVM), and because most JVMs implement
+ * it using JNI.</p>
+ */
+@DefaultQualifier(NonNull.class)
+public final class StringPool {
+ private final Map<String, String> pool;
+
+ public StringPool() {
+ this(new HashMap<>());
+ }
+
+ public StringPool(final Map<String, String> map) {
+ this.pool = map;
+ }
+
+ public String string(final String string) {
+ return this.pool.computeIfAbsent(string, Function.identity());
+ }
+}
diff --git a/src/main/java/net/minecraft/CrashReport.java b/src/main/java/net/minecraft/CrashReport.java
index 1938ae691dafec1fc1e5a68792d1191bd52b4e5c..268310642181a715815d3b2d1c0f090e6252971a 100644
--- a/src/main/java/net/minecraft/CrashReport.java
+++ b/src/main/java/net/minecraft/CrashReport.java
@@ -34,6 +34,7 @@ public class CrashReport {
private final SystemReport systemReport = new SystemReport();
public CrashReport(String message, Throwable cause) {
+ io.papermc.paper.util.StacktraceDeobfuscator.INSTANCE.deobfuscateThrowable(cause); // Paper
this.title = message;
this.exception = cause;
this.systemReport.setDetail("CraftBukkit Information", new org.bukkit.craftbukkit.CraftCrashReport()); // CraftBukkit
diff --git a/src/main/java/net/minecraft/CrashReportCategory.java b/src/main/java/net/minecraft/CrashReportCategory.java
index 81831a061d7fbf513f4aa7880e3b18ef3fdc05d7..1e9873d7b258ce1f0b2437cb1e487157a16f6834 100644
--- a/src/main/java/net/minecraft/CrashReportCategory.java
+++ b/src/main/java/net/minecraft/CrashReportCategory.java
@@ -110,6 +110,7 @@ public class CrashReportCategory {
} else {
this.stackTrace = new StackTraceElement[stackTraceElements.length - 3 - ignoredCallCount];
System.arraycopy(stackTraceElements, 3 + ignoredCallCount, this.stackTrace, 0, this.stackTrace.length);
+ this.stackTrace = io.papermc.paper.util.StacktraceDeobfuscator.INSTANCE.deobfuscateStacktrace(this.stackTrace); // Paper
return this.stackTrace.length;
}
}
diff --git a/src/main/java/net/minecraft/network/Connection.java b/src/main/java/net/minecraft/network/Connection.java
index 77985072928a1b892fb4f7dec1d0899324780082..f5e6610d271ef2c997fb3d1a5f65e0bf0740805a 100644
--- a/src/main/java/net/minecraft/network/Connection.java
+++ b/src/main/java/net/minecraft/network/Connection.java
@@ -82,13 +82,13 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
marker.add(Connection.PACKET_MARKER);
});
public static final Supplier<NioEventLoopGroup> NETWORK_WORKER_GROUP = Suppliers.memoize(() -> {
- return new NioEventLoopGroup(0, (new ThreadFactoryBuilder()).setNameFormat("Netty Client IO #%d").setDaemon(true).build());
+ return new NioEventLoopGroup(0, (new ThreadFactoryBuilder()).setNameFormat("Netty Client IO #%d").setDaemon(true).setUncaughtExceptionHandler(new net.minecraft.DefaultUncaughtExceptionHandlerWithName(LOGGER)).build()); // Paper
});
public static final Supplier<EpollEventLoopGroup> NETWORK_EPOLL_WORKER_GROUP = Suppliers.memoize(() -> {
- return new EpollEventLoopGroup(0, (new ThreadFactoryBuilder()).setNameFormat("Netty Epoll Client IO #%d").setDaemon(true).build());
+ return new EpollEventLoopGroup(0, (new ThreadFactoryBuilder()).setNameFormat("Netty Epoll Client IO #%d").setDaemon(true).setUncaughtExceptionHandler(new net.minecraft.DefaultUncaughtExceptionHandlerWithName(LOGGER)).build()); // Paper
});
public static final Supplier<DefaultEventLoopGroup> LOCAL_WORKER_GROUP = Suppliers.memoize(() -> {
- return new DefaultEventLoopGroup(0, (new ThreadFactoryBuilder()).setNameFormat("Netty Local Client IO #%d").setDaemon(true).build());
+ return new DefaultEventLoopGroup(0, (new ThreadFactoryBuilder()).setNameFormat("Netty Local Client IO #%d").setDaemon(true).setUncaughtExceptionHandler(new net.minecraft.DefaultUncaughtExceptionHandlerWithName(LOGGER)).build()); // Paper
});
private static final ProtocolInfo<ServerHandshakePacketListener> INITIAL_PROTOCOL = HandshakeProtocols.SERVERBOUND;
private final PacketFlow receiving;
@@ -197,7 +197,7 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
}
}
- if (net.minecraft.server.MinecraftServer.getServer().isDebugging()) throwable.printStackTrace(); // Spigot
+ if (net.minecraft.server.MinecraftServer.getServer().isDebugging()) io.papermc.paper.util.TraceUtil.printStackTrace(throwable); // Spigot // Paper
}
protected void channelRead0(ChannelHandlerContext channelhandlercontext, Packet<?> packet) {
diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
index dcb9258d3fbdfdfd41065d4c0919ed4300eac3ae..a61a92078a8bb4979f231c02ef5aa990b8ab57ad 100644
--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
+++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
@@ -209,6 +209,7 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface
org.spigotmc.SpigotConfig.init((java.io.File) this.options.valueOf("spigot-settings"));
org.spigotmc.SpigotConfig.registerCommands();
// Spigot end
+ io.papermc.paper.util.ObfHelper.INSTANCE.getClass(); // Paper - load mappings for stacktrace deobf and etc.
// Paper start - initialize global and world-defaults configuration
this.paperConfigurations.initializeGlobalConfiguration(this.registryAccess());
this.paperConfigurations.initializeWorldDefaultsConfiguration(this.registryAccess());
diff --git a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
index 987360a266a5a870f06929b00c9f451901188fd6..2cf3e79ec5e8706b71d27ebad4668773f0b91195 100644
--- a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
+++ b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
@@ -52,10 +52,10 @@ public class ServerConnectionListener {
private static final Logger LOGGER = LogUtils.getLogger();
public static final Supplier<NioEventLoopGroup> SERVER_EVENT_GROUP = Suppliers.memoize(() -> {
- return new NioEventLoopGroup(0, (new ThreadFactoryBuilder()).setNameFormat("Netty Server IO #%d").setDaemon(true).build());
+ return new NioEventLoopGroup(0, (new ThreadFactoryBuilder()).setNameFormat("Netty Server IO #%d").setDaemon(true).setUncaughtExceptionHandler(new net.minecraft.DefaultUncaughtExceptionHandlerWithName(LOGGER)).build()); // Paper
});
public static final Supplier<EpollEventLoopGroup> SERVER_EPOLL_EVENT_GROUP = Suppliers.memoize(() -> {
- return new EpollEventLoopGroup(0, (new ThreadFactoryBuilder()).setNameFormat("Netty Epoll Server IO #%d").setDaemon(true).build());
+ return new EpollEventLoopGroup(0, (new ThreadFactoryBuilder()).setNameFormat("Netty Epoll Server IO #%d").setDaemon(true).setUncaughtExceptionHandler(new net.minecraft.DefaultUncaughtExceptionHandlerWithName(LOGGER)).build()); // Paper
});
final MinecraftServer server;
public volatile boolean running;
diff --git a/src/main/java/net/minecraft/server/players/OldUsersConverter.java b/src/main/java/net/minecraft/server/players/OldUsersConverter.java
index 8d06e8d286da2573e40794adab695ff77e5afd86..68551947f5b7d3471f15bd74ccd86519ab34c1c1 100644
--- a/src/main/java/net/minecraft/server/players/OldUsersConverter.java
+++ b/src/main/java/net/minecraft/server/players/OldUsersConverter.java
@@ -356,7 +356,7 @@ public class OldUsersConverter {
try {
root = NbtIo.readCompressed(new java.io.FileInputStream(file5), NbtAccounter.unlimitedHeap());
} catch (Exception exception) {
- exception.printStackTrace();
+ io.papermc.paper.util.TraceUtil.printStackTrace(exception); // Paper
}
if (root != null) {
@@ -369,7 +369,7 @@ public class OldUsersConverter {
try {
NbtIo.writeCompressed(root, new java.io.FileOutputStream(file2));
} catch (Exception exception) {
- exception.printStackTrace();
+ io.papermc.paper.util.TraceUtil.printStackTrace(exception); // Paper
}
}
// CraftBukkit end
diff --git a/src/main/java/org/spigotmc/WatchdogThread.java b/src/main/java/org/spigotmc/WatchdogThread.java
index c4bf7053d83d207caca0e13e19f5c1afa7062de3..f697d45e0ac4e9cdc8a46121510a04c0f294d91f 100644
--- a/src/main/java/org/spigotmc/WatchdogThread.java
+++ b/src/main/java/org/spigotmc/WatchdogThread.java
@@ -130,7 +130,7 @@ public class WatchdogThread extends Thread
}
log.log( Level.SEVERE, "\tStack:" );
//
- for ( StackTraceElement stack : thread.getStackTrace() )
+ for ( StackTraceElement stack : io.papermc.paper.util.StacktraceDeobfuscator.INSTANCE.deobfuscateStacktrace(thread.getStackTrace()) ) // Paper
{
log.log( Level.SEVERE, "\t\t" + stack );
}
diff --git a/src/main/resources/log4j2.xml b/src/main/resources/log4j2.xml
index 18e961a37b2830da6e5dab7aa35116b2f5215898..128fa1376f22d3429a23d79a2772abf2e7fec2bc 100644
--- a/src/main/resources/log4j2.xml
+++ b/src/main/resources/log4j2.xml
@@ -30,10 +30,14 @@
<DefaultRolloverStrategy max="1000"/>
</RollingRandomAccessFile>
<Async name="Async">
+ <AppenderRef ref="rewrite"/>
+ </Async>
+ <Rewrite name="rewrite">
+ <StacktraceDeobfuscatingRewritePolicy />
<AppenderRef ref="File"/>
<AppenderRef ref="TerminalConsole" level="info"/>
<AppenderRef ref="ServerGuiConsole" level="info"/>
- </Async>
+ </Rewrite>
</Appenders>
<Loggers>
<Root level="info">
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