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