fix ya.make

1 files changed, 111 insertions, 0 deletions

diff --git a/contrib/libs/protobuf-mutator/src/mutator.h b/contrib/libs/protobuf-mutator/src/mutator.h
new file mode 100644
index 0000000000..2f1d3a833c
--- /dev/null
+++ b/contrib/libs/protobuf-mutator/src/mutator.h
@@ -0,0 +1,111 @@
+// Copyright 2016 Google Inc. All rights reserved.
+//
+// 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.
+
+#ifndef SRC_MUTATOR_H_
+#define SRC_MUTATOR_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <functional>
+#include <memory>
+#include <random>
+#include <string>
+#include <unordered_map>
+#include <vector>
+
+#include "port/protobuf.h"
+#include "src/random.h"
+
+namespace protobuf_mutator {
+
+// Randomly makes incremental change in the given protobuf.
+// Usage example:
+//    protobuf_mutator::Mutator mutator(1);
+//    MyMessage message;
+//    message.ParseFromString(encoded_message);
+//    mutator.Mutate(&message, 10000);
+//
+// Class implements very basic mutations of fields. E.g. it just flips bits for
+// integers, floats and strings. Also it increases, decreases size of
+// strings only by one. For better results users should override
+// protobuf_mutator::Mutator::Mutate* methods with more useful logic, e.g. using
+// library like libFuzzer.
+class Mutator {
+ public:
+  // seed: value to initialize random number generator.
+  Mutator() = default;
+  virtual ~Mutator() = default;
+
+  // Initialized internal random number generator.
+  void Seed(uint32_t value);
+
+  // message: message to mutate.
+  // max_size_hint: approximate max ByteSize() of resulting message. Method does
+  // not guarantee that real result will be strictly smaller than value. Caller
+  // could repeat mutation if result was larger than expected.
+  void Mutate(protobuf::Message* message, size_t max_size_hint);
+
+  void CrossOver(const protobuf::Message& message1, protobuf::Message* message2,
+                 size_t max_size_hint);
+
+  // Makes message initialized and calls post processors to make it valid.
+  void Fix(protobuf::Message* message);
+
+  // Callback to postprocess mutations.
+  // Implementation should use seed to initialize random number generators.
+  using PostProcess =
+      std::function<void(protobuf::Message* message, unsigned int seed)>;
+
+  // Register callback which will be called after every message mutation.
+  // In this callback fuzzer may adjust content of the message or mutate some
+  // fields in some fuzzer specific way.
+  void RegisterPostProcessor(const protobuf::Descriptor* desc,
+                             PostProcess callback);
+
+ protected:
+  // TODO(vitalybuka): Consider to replace with single mutate (uint8_t*, size).
+  virtual int32_t MutateInt32(int32_t value);
+  virtual int64_t MutateInt64(int64_t value);
+  virtual uint32_t MutateUInt32(uint32_t value);
+  virtual uint64_t MutateUInt64(uint64_t value);
+  virtual float MutateFloat(float value);
+  virtual double MutateDouble(double value);
+  virtual bool MutateBool(bool value);
+  virtual size_t MutateEnum(size_t index, size_t item_count);
+  virtual TProtoStringType MutateString(const TProtoStringType& value,
+                                   int size_increase_hint);
+
+  RandomEngine* random() { return &random_; }
+
+ private:
+  friend class FieldMutator;
+  friend class TestMutator;
+  bool MutateImpl(const std::vector<const protobuf::Message*>& sources,
+                  const std::vector<protobuf::Message*>& messages,
+                  bool copy_clone_only, int size_increase_hint);
+  TProtoStringType MutateUtf8String(const TProtoStringType& value,
+                               int size_increase_hint);
+  bool IsInitialized(const protobuf::Message& message) const;
+  bool keep_initialized_ = true;
+  size_t random_to_default_ratio_ = 100;
+  RandomEngine random_;
+  using PostProcessors =
+      std::unordered_multimap<const protobuf::Descriptor*, PostProcess>;
+  PostProcessors post_processors_;
+};
+
+}  // namespace protobuf_mutator
+
+#endif  // SRC_MUTATOR_H_