1 // Copyright 2021 Google LLC
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 ////////////////////////////////////////////////////////////////////////////////
16
17 #include "ExampleFuzzerNative.h"
18
19 #include <string>
20
21 // simple function containing a crash that requires coverage and string compare
22 // instrumentation for the fuzzer to find
parseInternal(const std::string & input)23 void parseInternal(const std::string &input) {
24 if (input[0] == 'a' && input[1] == 'b' && input[5] == 'c') {
25 if (input.find("secret_in_native_library") != std::string::npos) {
26 // BOOM
27 *(char *)1 = 2;
28 }
29 }
30 }
31
Java_ExampleFuzzerNative_parse(JNIEnv * env,jobject o,jstring bytes)32 JNIEXPORT jboolean JNICALL Java_ExampleFuzzerNative_parse(
33 JNIEnv *env, jobject o, jstring bytes) {
34 const char *input(env->GetStringUTFChars(bytes, nullptr));
35 parseInternal(input);
36 env->ReleaseStringUTFChars(bytes, input);
37 return false;
38 }
39