Repo created

TMessagesProj/jni/voip/webrtc/base/json/json_reader_fuzzer.cc

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+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/json/json_reader.h"
+#include "base/json/json_writer.h"
+#include "base/values.h"
+
+namespace base {
+
+// Entry point for LibFuzzer.
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+  if (size < 2)
+    return 0;
+
+  // Create a copy of input buffer, as otherwise we don't catch
+  // overflow that touches the last byte (which is used in options).
+  std::unique_ptr<char[]> input(new char[size - 1]);
+  memcpy(input.get(), data, size - 1);
+
+  StringPiece input_string(input.get(), size - 1);
+
+  const int options = data[size - 1];
+
+  JSONReader::ValueWithError json_val =
+      JSONReader::ReadAndReturnValueWithError(input_string, options);
+  CHECK((json_val.error_code == JSONReader::JSON_NO_ERROR) ==
+        json_val.value.has_value());
+
+  if (json_val.value) {
+    // Check that the value can be serialized and deserialized back to an
+    // equivalent |Value|.
+    const Value& value = json_val.value.value();
+    std::string serialized;
+    CHECK(JSONWriter::Write(value, &serialized));
+
+    Optional<Value> deserialized = JSONReader::Read(StringPiece(serialized));
+    CHECK(deserialized);
+    CHECK(value.Equals(&deserialized.value()));
+  }
+
+  return 0;
+}
+
+}  // namespace base