blob: 521a0544c81b22e5380626c5b4c9f7f6f9cf8968 [file] [log] [blame]
// Copyright 2016 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 <memory>
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "net/base/address_family.h"
#include "net/dns/host_resolver.h"
#include "net/dns/host_resolver_impl.h"
#include "net/socket/fuzzed_socket_factory.h"
#include "starboard/types.h"
namespace base {
class FuzzedDataProvider;
namespace net {
class AddressList;
class DnsClient;
class NetLog;
// HostResolver that uses a fuzzer to determine what results to return. It
// inherits from HostResolverImpl, unlike MockHostResolver, so more closely
// matches real behavior.
// By default uses a mocked out system resolver, though can be configured to
// use the built-in async resolver (Built in DNS stub resolver) with a fuzzed
// set of UDP/TCP sockets.
// To make behavior most deterministic, does not use the WorkerPool to run its
// simulated platform host resolver calls, instead runs them on the thread it is
// created on.
// Note that it does not attempt to sort the resulting AddressList when using
// the mock system resolver path.
// The async DNS client can make system calls in AddressSorterPosix, but other
// methods that make system calls are stubbed out.
class FuzzedHostResolver : public HostResolverImpl {
// |data_provider| and |net_log| must outlive the FuzzedHostResolver.
FuzzedHostResolver(const Options& options,
NetLog* net_log,
base::FuzzedDataProvider* data_provider);
~FuzzedHostResolver() override;
// Enable / disable the async resolver. When enabled, installs a
// DnsClient with fuzzed UDP and TCP sockets. Overrides
// HostResolverImpl method of the same name.
void SetDnsClientEnabled(bool enabled) override;
// HostResolverImpl implementation:
bool IsGloballyReachable(const IPAddress& dest,
const NetLogWithSource& net_log) override;
void RunLoopbackProbeJob() override;
base::FuzzedDataProvider* data_provider_;
// Used for UDP and TCP sockets if the async resolver is enabled.
FuzzedSocketFactory socket_factory_;
// Fixed value to be returned by IsIPv6Reachable.
const bool is_ipv6_reachable_;
NetLog* net_log_;
base::WeakPtrFactory<base::FuzzedDataProvider> data_provider_weak_factory_;
} // namespace net