examples/java/com/example/FuzzTest.java

// Copyright 2021 Google LLC
//
// 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 com.code_intelligence.jazzer.api.FuzzerSecurityIssueMedium;

public class FuzzTest {
    public static void fuzzerInitialize() {
        // Optional initialization to be run before the first call to fuzzerTestOneInput.
    }

    public static void fuzzerTestOneInput(FuzzedDataProvider data) {
        String input = data.consumeRemainingAsString();
        if (input.startsWith("magicstring") && input.length() > 30
                && input.charAt(25) == 'C') {
            mustNeverBeCalled();
        }
    }

    private static void mustNeverBeCalled() {
        throw new FuzzerSecurityIssueMedium("mustNeverBeCalled has been called");
    }
}