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 import com.code_intelligence.jazzer.api.FuzzedDataProvider; 18 import com.fasterxml.jackson.core.JsonParser; 19 import com.fasterxml.jackson.databind.ObjectMapper; 20 21 import java.io.IOException; 22 23 public class JsonFuzzer { fuzzerTestOneInput(FuzzedDataProvider data)24 public static void fuzzerTestOneInput(FuzzedDataProvider data) { 25 ObjectMapper mapper = new ObjectMapper(); 26 if (data.consumeBoolean()) 27 mapper.enable(JsonParser.Feature.ALLOW_COMMENTS); 28 if (data.consumeBoolean()) 29 mapper.enable(JsonParser.Feature.ALLOW_SINGLE_QUOTES); 30 if (data.consumeBoolean()) 31 mapper.enable(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES); 32 if (data.consumeBoolean()) 33 mapper.enable(JsonParser.Feature.ALLOW_YAML_COMMENTS); 34 if (data.consumeBoolean()) 35 mapper.enable(JsonParser.Feature.IGNORE_UNDEFINED); 36 if (data.consumeBoolean()) 37 mapper.enable(JsonParser.Feature.STRICT_DUPLICATE_DETECTION); 38 39 try { 40 mapper.readTree(data.consumeRemainingAsBytes()); 41 } catch (IOException ignored) { 42 } 43 } 44 } 45