1 // Copyright 2022 The Pigweed Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not 4 // use this file except in compliance with the License. You may obtain a copy of 5 // the License at 6 // 7 // https://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, WITHOUT 11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12 // License for the specific language governing permissions and limitations under 13 // the License. 14 #pragma once 15 16 #include "pw_fuzzer/fuzzed_data_provider.h" 17 #include "pw_random/random.h" 18 19 namespace pw::random { 20 21 // FuzzerRandomGenerator is intended to be used as the generator in fuzz tests. 22 // It returns data from the fuzzer input. 23 class FuzzerRandomGenerator : public RandomGenerator { 24 public: FuzzerRandomGenerator(FuzzedDataProvider * provider)25 FuzzerRandomGenerator(FuzzedDataProvider* provider) : provider_(provider) {} Get(ByteSpan dest)26 void Get(ByteSpan dest) override { 27 provider_->ConsumeData(dest.data(), dest.size()); 28 } 29 InjectEntropyBits(uint32_t,uint_fast8_t)30 void InjectEntropyBits(uint32_t /*data*/, 31 uint_fast8_t /*num_bits*/) override {} 32 33 private: 34 FuzzedDataProvider* provider_; 35 }; 36 37 } // namespace pw::random 38