mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-11-24 06:16:30 +03:00
94 lines
2.5 KiB
C++
94 lines
2.5 KiB
C++
// Copyright (c) 2012 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.
|
|
|
|
#ifndef NET_DNS_ADDRESS_SORTER_POSIX_H_
|
|
#define NET_DNS_ADDRESS_SORTER_POSIX_H_
|
|
|
|
#include <map>
|
|
#include <vector>
|
|
|
|
#include "base/macros.h"
|
|
#include "base/threading/thread_checker.h"
|
|
#include "net/base/address_list.h"
|
|
#include "net/base/ip_address.h"
|
|
#include "net/base/net_export.h"
|
|
#include "net/base/network_change_notifier.h"
|
|
#include "net/dns/address_sorter.h"
|
|
|
|
namespace net {
|
|
|
|
class ClientSocketFactory;
|
|
|
|
// This implementation uses explicit policy to perform the sorting. It is not
|
|
// thread-safe and always completes synchronously.
|
|
class NET_EXPORT_PRIVATE AddressSorterPosix
|
|
: public AddressSorter,
|
|
public NetworkChangeNotifier::IPAddressObserver {
|
|
public:
|
|
// Generic policy entry.
|
|
struct PolicyEntry {
|
|
// IPv4 addresses must be mapped to IPv6.
|
|
unsigned char prefix[IPAddress::kIPv6AddressSize];
|
|
unsigned prefix_length;
|
|
unsigned value;
|
|
};
|
|
|
|
typedef std::vector<PolicyEntry> PolicyTable;
|
|
|
|
enum AddressScope {
|
|
SCOPE_UNDEFINED = 0,
|
|
SCOPE_NODELOCAL = 1,
|
|
SCOPE_LINKLOCAL = 2,
|
|
SCOPE_SITELOCAL = 5,
|
|
SCOPE_ORGLOCAL = 8,
|
|
SCOPE_GLOBAL = 14,
|
|
};
|
|
|
|
struct SourceAddressInfo {
|
|
// Values read from policy tables.
|
|
AddressScope scope;
|
|
unsigned label;
|
|
|
|
// Values from the OS, matter only if more than one source address is used.
|
|
unsigned prefix_length;
|
|
bool deprecated; // vs. preferred RFC4862
|
|
bool home; // vs. care-of RFC6275
|
|
bool native;
|
|
};
|
|
|
|
typedef std::map<IPAddress, SourceAddressInfo> SourceAddressMap;
|
|
|
|
explicit AddressSorterPosix(ClientSocketFactory* socket_factory);
|
|
~AddressSorterPosix() override;
|
|
|
|
// AddressSorter:
|
|
void Sort(const AddressList& list, CallbackType callback) const override;
|
|
|
|
private:
|
|
friend class AddressSorterPosixTest;
|
|
|
|
// NetworkChangeNotifier::IPAddressObserver:
|
|
void OnIPAddressChanged() override;
|
|
|
|
// Fills |info| with values for |address| from policy tables.
|
|
void FillPolicy(const IPAddress& address, SourceAddressInfo* info) const;
|
|
|
|
// Mutable to allow using default values for source addresses which were not
|
|
// found in most recent OnIPAddressChanged.
|
|
mutable SourceAddressMap source_map_;
|
|
|
|
ClientSocketFactory* socket_factory_;
|
|
PolicyTable precedence_table_;
|
|
PolicyTable label_table_;
|
|
PolicyTable ipv4_scope_table_;
|
|
|
|
THREAD_CHECKER(thread_checker_);
|
|
|
|
DISALLOW_COPY_AND_ASSIGN(AddressSorterPosix);
|
|
};
|
|
|
|
} // namespace net
|
|
|
|
#endif // NET_DNS_ADDRESS_SORTER_POSIX_H_
|