From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Zach Brown Date: Wed, 3 Oct 2018 20:09:18 -0400 Subject: [PATCH] Hook into CB plugin rewrites Allows us to do fun stuff like rewrite the OBC util fastutil location to our own relocation. Also lets us rewrite NMS calls for when we're debugging in an IDE pre-relocate. diff --git a/src/main/java/org/bukkit/craftbukkit/util/Commodore.java b/src/main/java/org/bukkit/craftbukkit/util/Commodore.java index a679133a3de51e26eb19932ece9ade292879aefd..2c537a80951ddf98d3135ca19a34a238484c2d88 100644 --- a/src/main/java/org/bukkit/craftbukkit/util/Commodore.java +++ b/src/main/java/org/bukkit/craftbukkit/util/Commodore.java @@ -6,7 +6,9 @@ import java.io.FileOutputStream; import java.io.InputStream; import java.util.Arrays; import java.util.Enumeration; +import java.util.HashMap; import java.util.HashSet; +import java.util.Map; import java.util.Set; import java.util.jar.JarEntry; import java.util.jar.JarFile; @@ -20,10 +22,15 @@ import org.bukkit.plugin.AuthorNagException; import org.objectweb.asm.ClassReader; import org.objectweb.asm.ClassVisitor; import org.objectweb.asm.ClassWriter; +import org.objectweb.asm.FieldVisitor; +import org.objectweb.asm.Handle; +import org.objectweb.asm.Label; import org.objectweb.asm.MethodVisitor; import org.objectweb.asm.Opcodes; import org.objectweb.asm.Type; +import javax.annotation.Nonnull; + /** * This file is imported from Commodore. * @@ -46,6 +53,41 @@ public class Commodore "org/bukkit/inventory/ItemStack (I)V setTypeId" ) ); + // Paper start - Plugin rewrites + private static final Map SEARCH_AND_REMOVE = initReplacementsMap(); + private static Map initReplacementsMap() + { + Map getAndRemove = new HashMap<>(); + // Be wary of maven shade's relocations + + final java.util.jar.Manifest manifest = io.papermc.paper.util.JarManifests.manifest(Commodore.class); + if ( Boolean.getBoolean( "debug.rewriteForIde" ) && manifest != null) + { + // unversion incoming calls for pre-relocate debug work + final String NMS_REVISION_PACKAGE = "v" + manifest.getMainAttributes().getValue("CraftBukkit-Package-Version") + "/"; + + getAndRemove.put( "org/bukkit/".concat( "craftbukkit/" + NMS_REVISION_PACKAGE ), NMS_REVISION_PACKAGE ); + } + + return getAndRemove; + } + + @Nonnull + private static String getOriginalOrRewrite(@Nonnull String original) + { + String rewrite = null; + for ( Map.Entry entry : SEARCH_AND_REMOVE.entrySet() ) + { + if ( original.contains( entry.getKey() ) ) + { + rewrite = original.replace( entry.getValue(), "" ); + } + } + + return rewrite != null ? rewrite : original; + } + // Paper end + public static void main(String[] args) { OptionParser parser = new OptionParser(); @@ -130,15 +172,86 @@ public class Commodore cr.accept( new ClassVisitor( Opcodes.ASM9, cw ) { + // Paper start - Rewrite plugins + @Override + public FieldVisitor visitField(int access, String name, String desc, String signature, Object value) + { + desc = getOriginalOrRewrite( desc ); + if ( signature != null ) { + signature = getOriginalOrRewrite( signature ); + } + + return super.visitField( access, name, desc, signature, value) ; + } + // Paper end + @Override public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) { return new MethodVisitor( api, super.visitMethod( access, name, desc, signature, exceptions ) ) { + // Paper start - Plugin rewrites + @Override + public void visitInvokeDynamicInsn(String name, String desc, Handle bootstrapMethodHandle, Object... bootstrapMethodArguments) + { + // Paper start - Rewrite plugins + name = getOriginalOrRewrite( name ); + if ( desc != null ) + { + desc = getOriginalOrRewrite( desc ); + } + // Paper end + + super.visitInvokeDynamicInsn( name, desc, bootstrapMethodHandle, bootstrapMethodArguments ); + } + + @Override + public void visitTypeInsn(int opcode, String type) + { + type = getOriginalOrRewrite( type ); + + super.visitTypeInsn( opcode, type ); + } + + @Override + public void visitFrame(int type, int nLocal, Object[] local, int nStack, Object[] stack) { + for ( int i = 0; i < local.length; i++ ) + { + if ( !( local[i] instanceof String ) ) { continue; } + + local[i] = getOriginalOrRewrite( (String) local[i] ); + } + + for ( int i = 0; i < stack.length; i++ ) + { + if ( !( stack[i] instanceof String ) ) { continue; } + + stack[i] = getOriginalOrRewrite( (String) stack[i] ); + } + + super.visitFrame( type, nLocal, local, nStack, stack ); + } + + @Override + public void visitLocalVariable(String name, String descriptor, String signature, Label start, Label end, int index) + { + descriptor = getOriginalOrRewrite( descriptor ); + + super.visitLocalVariable( name, descriptor, signature, start, end, index ); + } + // Paper end @Override public void visitFieldInsn(int opcode, String owner, String name, String desc) { + // Paper start - Rewrite plugins + owner = getOriginalOrRewrite( owner ); + if ( desc != null ) + { + desc = getOriginalOrRewrite( desc ); + } + // Paper end + if ( owner.equals( "org/bukkit/block/Biome" ) ) { switch ( name ) @@ -306,6 +419,14 @@ public class Commodore return; } + // Paper start - Rewrite plugins + owner = getOriginalOrRewrite( owner) ; + if (desc != null) + { + desc = getOriginalOrRewrite(desc); + } + // Paper end + if ( modern ) { if ( owner.equals( "org/bukkit/Material" ) ) @@ -395,6 +516,13 @@ public class Commodore @Override public void visitLdcInsn(Object value) { + // Paper start + if (value instanceof Type type) { + if (type.getSort() == Type.OBJECT || type.getSort() == Type.ARRAY) { + value = Type.getType(getOriginalOrRewrite(type.getDescriptor())); + } + } + // Paper end if ( value instanceof String && ( (String) value ).equals( "com.mysql.jdbc.Driver" ) ) { super.visitLdcInsn( "com.mysql.cj.jdbc.Driver" );