net/proxy_resolution/parse_proxy_host_matching_rules_fuzzer.cc

// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <stdint.h>

#include <string>

#include "base/containers/span.h"
#include "base/strings/string_view_util.h"
#include "net/proxy_resolution/proxy_host_matching_rules.h"
#include "testing/libfuzzer/libfuzzer_base_wrappers.h"

// Entry point for LibFuzzer.
DEFINE_LLVM_FUZZER_TEST_ONE_INPUT_SPAN(base::span<const uint8_t> data) {
  // Don't waste time parsing if the input is too large
  // (https://crbug.com/813619). According to
  // //testing/libfuzzer/efficient_fuzzer.md setting max_len in the build
  // target is insufficient since AFL doesn't respect it.
  if (data.size() > 512) {
    return 0;
  }

  net::ProxyHostMatchingRules rules;
  rules.ParseFromString(std::string(base::as_string_view(data)));

  return 0;
}