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Transform listener classes to obtain privileged Lookups
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103 changes: 103 additions & 0 deletions
103
.../applaunch/java/org/spongepowered/forge/applaunch/transformation/ListenerTransformer.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| /* | ||
| * This file is part of Sponge, licensed under the MIT License (MIT). | ||
| * | ||
| * Copyright (c) SpongePowered <https://www.spongepowered.org> | ||
| * Copyright (c) contributors | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| * of this software and associated documentation files (the "Software"), to deal | ||
| * in the Software without restriction, including without limitation the rights | ||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| * copies of the Software, and to permit persons to whom the Software is | ||
| * furnished to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included in | ||
| * all copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| * THE SOFTWARE. | ||
| */ | ||
| package org.spongepowered.forge.applaunch.transformation; | ||
|
|
||
| import static org.objectweb.asm.Opcodes.ACC_STATIC; | ||
| import static org.objectweb.asm.Opcodes.INVOKESTATIC; | ||
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| import cpw.mods.modlauncher.api.ITransformer; | ||
| import cpw.mods.modlauncher.api.ITransformerActivity; | ||
| import cpw.mods.modlauncher.api.ITransformerVotingContext; | ||
| import cpw.mods.modlauncher.api.TransformerVoteResult; | ||
| import net.minecraftforge.fml.loading.LoadingModList; | ||
| import net.minecraftforge.fml.loading.moddiscovery.ModFileInfo; | ||
| import net.minecraftforge.forgespi.language.ModFileScanData; | ||
| import org.checkerframework.checker.nullness.qual.NonNull; | ||
| import org.objectweb.asm.Type; | ||
| import org.objectweb.asm.tree.ClassNode; | ||
| import org.objectweb.asm.tree.InsnList; | ||
| import org.objectweb.asm.tree.LdcInsnNode; | ||
| import org.objectweb.asm.tree.MethodInsnNode; | ||
| import org.objectweb.asm.tree.MethodNode; | ||
|
|
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| import java.util.HashSet; | ||
| import java.util.Set; | ||
|
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| public class ListenerTransformer implements ITransformer<ClassNode> { | ||
|
|
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| @NonNull | ||
| @Override | ||
| public ClassNode transform(final ClassNode input, final ITransformerVotingContext context) { | ||
| MethodNode clinit = null; | ||
| for (final MethodNode method : input.methods) { | ||
| if (method.name.equals("<clinit>") && method.desc.equals("()V")) { | ||
| clinit = method; | ||
| break; | ||
| } | ||
| } | ||
|
|
||
| if (clinit == null) { | ||
| clinit = new MethodNode(ACC_STATIC, "<clinit>", "()V", null, null); | ||
| input.methods.add(clinit); | ||
| } | ||
|
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|
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| final InsnList list = new InsnList(); | ||
| list.add(new LdcInsnNode(Type.getObjectType(input.name))); | ||
| list.add(new MethodInsnNode(INVOKESTATIC, "java/lang/invoke/MethodHandles", "lookup", "()Ljava/lang/invoke/MethodHandles$Lookup;", false)); | ||
| list.add(new MethodInsnNode(INVOKESTATIC, "org/spongepowered/forge/launch/event/ListenerLookups", "set", "(Ljava/lang/Class;Ljava/lang/invoke/MethodHandles$Lookup;)V")); | ||
|
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| clinit.instructions.insert(list); | ||
|
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| return input; | ||
| } | ||
|
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| @NonNull | ||
| @Override | ||
| public TransformerVoteResult castVote(final ITransformerVotingContext context) { | ||
| return context.getReason().equals(ITransformerActivity.CLASSLOADING_REASON) ? TransformerVoteResult.YES : TransformerVoteResult.NO; | ||
| } | ||
|
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| @NonNull | ||
| @Override | ||
| public Set<Target> targets() { | ||
| final Type listenerType = Type.getType("Lorg/spongepowered/api/event/Listener;"); | ||
|
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| final Set<Type> listenerClasses = new HashSet<>(); | ||
| for (ModFileInfo fileInfo : LoadingModList.get().getModFiles()) { | ||
| for (ModFileScanData.AnnotationData annotation : fileInfo.getFile().getScanResult().getAnnotations()) { | ||
| if (listenerType.equals(annotation.annotationType())) { | ||
| listenerClasses.add(annotation.clazz()); | ||
| } | ||
| } | ||
| } | ||
|
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| final Set<Target> targets = new HashSet<>(); | ||
| for (Type listener : listenerClasses) { | ||
| targets.add(Target.targetClass(listener.getInternalName())); | ||
| } | ||
| return targets; | ||
| } | ||
| } |
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2 changes: 1 addition & 1 deletion
2
...src/applaunch/resources/META-INF/services/cpw.mods.modlauncher.api.ITransformationService
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1 @@ | ||
| org.spongepowered.forge.applaunch.service.SpongeForgeTransformationService | ||
| org.spongepowered.forge.applaunch.transformation.SpongeForgeTransformationService |
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43 changes: 43 additions & 0 deletions
43
forge/src/launch/java/org/spongepowered/forge/launch/event/ListenerLookups.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| /* | ||
| * This file is part of Sponge, licensed under the MIT License (MIT). | ||
| * | ||
| * Copyright (c) SpongePowered <https://www.spongepowered.org> | ||
| * Copyright (c) contributors | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| * of this software and associated documentation files (the "Software"), to deal | ||
| * in the Software without restriction, including without limitation the rights | ||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| * copies of the Software, and to permit persons to whom the Software is | ||
| * furnished to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included in | ||
| * all copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| * THE SOFTWARE. | ||
| */ | ||
| package org.spongepowered.forge.launch.event; | ||
|
|
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| import org.checkerframework.checker.nullness.qual.Nullable; | ||
|
|
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| import java.lang.invoke.MethodHandles; | ||
| import java.util.Map; | ||
| import java.util.concurrent.ConcurrentHashMap; | ||
|
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| public class ListenerLookups { | ||
| private static final Map<Class<?>, MethodHandles.Lookup> lookups = new ConcurrentHashMap<>(); | ||
|
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| public static MethodHandles.@Nullable Lookup get(final Class<?> listenerClass) { | ||
| return ListenerLookups.lookups.get(listenerClass); | ||
| } | ||
|
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| public static void set(final Class<?> listenerClass, final MethodHandles.Lookup lookup) { | ||
| ListenerLookups.lookups.put(listenerClass, lookup); | ||
| } | ||
| } |
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