FuzzDecode.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.
//
////////////////////////////////////////////////////////////////////////////////
import com.code_intelligence.jazzer.api.FuzzedDataProvider;
import java.io.*;
import org.brotli.dec.BrotliInputStream;
public class FuzzDecode {
public static void fuzzerTestOneInput(FuzzedDataProvider data) {
byte[] buffer = new byte[65536];
byte[] inputBytes = data.consumeBytes(65536);
// Brotli allows 0-bit prefix codes - thus even small input could produce large output.
long totalOutputCap = Math.min(4096L * inputBytes.length, 3L << 24);
totalOutputCap = Math.max(totalOutputCap, 1L << 20);
long totalOutput = 0;
ByteArrayInputStream input = new ByteArrayInputStream(inputBytes);
try {
BrotliInputStream brotliInput = new BrotliInputStream(input);
while (true) {
int len = brotliInput.read(buffer, 0, buffer.length);
if (len <= 0) {
break;
}
totalOutput += len;
if (totalOutput >= totalOutputCap) break;
}
} catch (IOException expected) {}
}
}