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// Copyright 2021 Code Intelligence GmbH
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.example;
import com.code_intelligence.jazzer.api.FuzzedDataProvider;
import java.security.SecureRandom;
public class ExampleFuzzer {
public static void fuzzerInitialize() {
// Optional initialization to be run before the first call to fuzzerTestOneInput.
}
public static boolean fuzzerTestOneInput(FuzzedDataProvider data) {
String input = data.consumeRemainingAsString();
// Without the hook in ExampleFuzzerHooks.java, the value of random would change on every
// invocation, making it almost impossible to guess for the fuzzer.
long random = new SecureRandom().nextLong();
if (input.startsWith("magicstring" + random) && input.length() > 30
&& input.charAt(25) == 'C') {
mustNeverBeCalled();
}
return false;
}
private static void mustNeverBeCalled() {
throw new IllegalStateException("mustNeverBeCalled has been called");
}
}
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