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.example; 16 17 import com.code_intelligence.jazzer.api.FuzzedDataProvider; 18 import com.github.fmeum.rules_jni.RulesJni; 19 20 public class ExampleFuzzerWithNative { 21 static { 22 String native_lib = System.getenv("EXAMPLE_NATIVE_LIB"); RulesJni.loadLibrary(native_lib, ExampleFuzzerWithNative.class)23 RulesJni.loadLibrary(native_lib, ExampleFuzzerWithNative.class); 24 } 25 fuzzerTestOneInput(FuzzedDataProvider data)26 public static void fuzzerTestOneInput(FuzzedDataProvider data) { 27 int val = data.consumeInt(); 28 String stringData = data.consumeRemainingAsString(); 29 if (val == 17759716 && stringData.length() > 10 && stringData.contains("jazzer")) { 30 // call native function which contains a crash 31 new ExampleFuzzerWithNative().parse(stringData); 32 } 33 } 34 parse(String bytes)35 private native boolean parse(String bytes); 36 }