1 // Copyright 2021 Code Intelligence GmbH 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package com.code_intelligence.jazzer.runtime; 16 17 import java.util.ArrayList; 18 19 final public class JazzerInternal { 20 private static final ArrayList<Runnable> ON_FUZZ_TARGET_READY_CALLBACKS = new ArrayList<>(); 21 22 public static Throwable lastFinding; 23 24 // Accessed from api.Jazzer via reflection. reportFindingFromHook(Throwable finding)25 public static void reportFindingFromHook(Throwable finding) { 26 lastFinding = finding; 27 // Throw an Error that is hard to catch (short of outright ignoring it) in order to quickly 28 // terminate the execution of the fuzz target. The finding will be reported as soon as the fuzz 29 // target returns even if this Error is swallowed. 30 throw new HardToCatchError(); 31 } 32 registerOnFuzzTargetReadyCallback(Runnable callback)33 public static void registerOnFuzzTargetReadyCallback(Runnable callback) { 34 ON_FUZZ_TARGET_READY_CALLBACKS.add(callback); 35 } 36 onFuzzTargetReady(String fuzzTargetClass)37 public static void onFuzzTargetReady(String fuzzTargetClass) { 38 ON_FUZZ_TARGET_READY_CALLBACKS.forEach(Runnable::run); 39 ON_FUZZ_TARGET_READY_CALLBACKS.clear(); 40 } 41 } 42