forked from SteamWar/SteamWar
45 lines
1.6 KiB
Java
45 lines
1.6 KiB
Java
/*
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* This file is a part of the SteamWar software.
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*
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* Copyright (C) 2026 SteamWar.de-Serverteam
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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package de.steamwar;
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import java.lang.instrument.ClassFileTransformer;
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import java.security.ProtectionDomain;
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import java.util.List;
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/**
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* Transforms class bytecode to apply access widening rules.
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* <p>
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* Also monitors for new plugin ClassLoaders appearing (when plugins load after
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* the agent attaches) and automatically picks up their .accesswidener files.
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*/
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public class WideningTransformer implements ClassFileTransformer {
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private final ClassPatcher patcher;
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public WideningTransformer(List<AccessWidenerEntry> entries) {
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patcher = new ClassPatcher(entries);
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}
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@Override
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public byte[] transform(ClassLoader loader, String className, Class<?> classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer) {
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return patcher.patch(className, classfileBuffer);
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}
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}
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