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 40fbbff1df7e65ca01bb82e213eeefbb38c85a7a..7d2d5c4ee244e7118a4c38628e2e69c79b11b98d 100644 --- a/src/main/java/org/bukkit/craftbukkit/util/Commodore.java +++ b/src/main/java/org/bukkit/craftbukkit/util/Commodore.java @@ -12,6 +12,7 @@ import java.util.Arrays; import java.util.Collection; import java.util.Collections; import java.util.Enumeration; +import java.util.HashMap; import java.util.HashSet; import java.util.List; import java.util.Map; @@ -22,6 +23,7 @@ import java.util.jar.JarEntry; import java.util.jar.JarFile; import java.util.jar.JarOutputStream; import java.util.zip.ZipEntry; +import javax.annotation.Nonnull; import joptsimple.OptionParser; import joptsimple.OptionSet; import joptsimple.OptionSpec; @@ -128,6 +130,40 @@ public class Commodore { return this.reroutes; } + // 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 - Plugin rewrites + public static void main(String[] args) { OptionParser parser = new OptionParser(); OptionSpec inputFlag = parser.acceptsAll(Arrays.asList("i", "input")).withRequiredArg().ofType(File.class).required(); @@ -283,9 +319,49 @@ public class Commodore { } return new MethodVisitor(this.api, super.visitMethod(access, name, desc, signature, exceptions)) { + // Paper start - Plugin rewrites + @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 - Plugin rewrites @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 name = FieldRename.rename(pluginVersion, owner, name); if (modern) { @@ -398,6 +474,13 @@ public class Commodore { return; } + // Paper start - Rewrite plugins + owner = getOriginalOrRewrite(owner) ; + if (desc != null) { + desc = getOriginalOrRewrite(desc); + } + // Paper end - Rewrite plugins + if (modern) { if (owner.equals("org/bukkit/Material") || (instantiatedMethodType != null && instantiatedMethodType.getDescriptor().startsWith("(Lorg/bukkit/Material;)"))) { switch (name) { @@ -494,6 +577,13 @@ 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"); return; @@ -504,6 +594,14 @@ public class Commodore { @Override public void visitInvokeDynamicInsn(String name, String descriptor, Handle bootstrapMethodHandle, Object... bootstrapMethodArguments) { + // Paper start - Rewrite plugins + name = getOriginalOrRewrite(name); + if (descriptor != null) { + descriptor = getOriginalOrRewrite(descriptor); + } + final String fName = name; + final String fDescriptor = descriptor; + // Paper end - Rewrite plugins if (bootstrapMethodHandle.getOwner().equals("java/lang/invoke/LambdaMetafactory") && bootstrapMethodHandle.getName().equals("metafactory") && bootstrapMethodArguments.length == 3) { Type samMethodType = (Type) bootstrapMethodArguments[0]; @@ -520,7 +618,7 @@ public class Commodore { methodArgs.add(new Handle(newOpcode, newOwner, newName, newDescription, newItf)); methodArgs.add(newInstantiated); - super.visitInvokeDynamicInsn(name, descriptor, bootstrapMethodHandle, methodArgs.toArray(Object[]::new)); + super.visitInvokeDynamicInsn(fName, fDescriptor, bootstrapMethodHandle, methodArgs.toArray(Object[]::new)); // Paper - use final local vars }, implMethod.getTag(), implMethod.getOwner(), implMethod.getName(), implMethod.getDesc(), implMethod.isInterface(), samMethodType, instantiatedMethodType); return; } @@ -571,6 +669,12 @@ public class Commodore { @Override public FieldVisitor visitField(int access, String name, String descriptor, String signature, Object value) { + // Paper start - Rewrite plugins + descriptor = getOriginalOrRewrite(descriptor); + if ( signature != null ) { + signature = getOriginalOrRewrite(signature); + } + // Paper end return new FieldVisitor(this.api, super.visitField(access, name, descriptor, signature, value)) { @Override public AnnotationVisitor visitAnnotation(String descriptor, boolean visible) {