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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_BASE_NETWORK_CHANGE_NOTIFIER_LINUX_H_
#define NET_BASE_NETWORK_CHANGE_NOTIFIER_LINUX_H_
#include <memory>
#include <unordered_set>
#include "base/compiler_specific.h"
#include "base/files/scoped_file.h"
#include "base/memory/scoped_refptr.h"
#include "base/types/pass_key.h"
#include "net/base/net_export.h"
#include "net/base/network_change_notifier.h"
namespace base {
class SequencedTaskRunner;
struct OnTaskRunnerDeleter;
} // namespace base
namespace net {
class NET_EXPORT_PRIVATE NetworkChangeNotifierLinux
: public NetworkChangeNotifier {
public:
// Creates the object mostly like normal, but the AddressTrackerLinux will use
// |netlink_fd| instead of creating and binding its own netlink socket.
static std::unique_ptr<NetworkChangeNotifierLinux> CreateWithSocketForTesting(
const std::unordered_set<std::string>& ignored_interfaces,
base::ScopedFD netlink_fd);
// Creates NetworkChangeNotifierLinux with a list of ignored interfaces.
// |ignored_interfaces| is the list of interfaces to ignore. An ignored
// interface will not trigger IP address or connection type notifications.
// NOTE: Only ignore interfaces not used to connect to the internet. Adding
// interfaces used to connect to the internet can cause critical network
// changed signals to be lost allowing incorrect stale state to persist.
explicit NetworkChangeNotifierLinux(
const std::unordered_set<std::string>& ignored_interfaces);
// This constructor can leave the BlockingThreadObjects uninitialized. This
// is useful in tests that want to mock the netlink dependency of
// AddressTrackerLinux. The PassKey makes this essentially a private
// constructor.
NetworkChangeNotifierLinux(
const std::unordered_set<std::string>& ignored_interfaces,
bool initialize_blocking_thread_objects,
base::PassKey<NetworkChangeNotifierLinux>);
NetworkChangeNotifierLinux(const NetworkChangeNotifierLinux&) = delete;
NetworkChangeNotifierLinux& operator=(const NetworkChangeNotifierLinux&) =
delete;
~NetworkChangeNotifierLinux() override;
static NetworkChangeCalculatorParams NetworkChangeCalculatorParamsLinux();
private:
class BlockingThreadObjects;
// Initializes BlockingThreadObjects, but AddressTrackerLinux will listen to
// |netlink_fd| rather than the kernel.
void InitBlockingThreadObjectsForTesting(base::ScopedFD netlink_fd);
// NetworkChangeNotifier:
ConnectionType GetCurrentConnectionType() const override;
AddressMapOwnerLinux* GetAddressMapOwnerInternal() override;
// |blocking_thread_objects_| will live on this runner.
scoped_refptr<base::SequencedTaskRunner> blocking_thread_runner_;
// A collection of objects that must live on blocking sequences. These objects
// listen for notifications and relay the notifications to the registered
// observers without posting back to the thread the object was created on.
std::unique_ptr<BlockingThreadObjects, base::OnTaskRunnerDeleter>
blocking_thread_objects_;
};
} // namespace net
#endif // NET_BASE_NETWORK_CHANGE_NOTIFIER_LINUX_H_
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