1//
2// Copyright (C) 2013 The Android Open Source Project
3//
4// Licensed under the Apache License, Version 2.0 (the "License");
5// you may not use this file except in compliance with the License.
6// You may obtain a copy of the License at
7//
8//      http://www.apache.org/licenses/LICENSE-2.0
9//
10// Unless required by applicable law or agreed to in writing, software
11// distributed under the License is distributed on an "AS IS" BASIS,
12// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13// See the License for the specific language governing permissions and
14// limitations under the License.
15//
16
17#ifndef SHILL_CONNECTION_INFO_READER_H_
18#define SHILL_CONNECTION_INFO_READER_H_
19
20#include <string>
21#include <vector>
22
23#include <base/macros.h>
24#include <base/files/file_path.h>
25#include <gtest/gtest_prod.h>
26
27#include "shill/connection_info.h"
28
29namespace shill {
30
31class ConnectionInfoReader {
32 public:
33  ConnectionInfoReader();
34  virtual ~ConnectionInfoReader();
35
36  // Returns the file path (/proc/net/ip_conntrack by default) from where
37  // IP connection tracking information are read. Overloadded by unit tests
38  // to return a different file path.
39  virtual base::FilePath GetConnectionInfoFilePath() const;
40
41  // Loads IP connection tracking information from the file path returned by
42  // GetConnectionInfoFilePath(). Existing entries in |info_list| are always
43  // discarded. Returns true on success.
44  virtual bool LoadConnectionInfo(std::vector<ConnectionInfo>* info_list);
45
46 private:
47  FRIEND_TEST(ConnectionInfoReaderTest, ParseConnectionInfo);
48  FRIEND_TEST(ConnectionInfoReaderTest, ParseIPAddress);
49  FRIEND_TEST(ConnectionInfoReaderTest, ParseIsUnreplied);
50  FRIEND_TEST(ConnectionInfoReaderTest, ParsePort);
51  FRIEND_TEST(ConnectionInfoReaderTest, ParseProtocol);
52  FRIEND_TEST(ConnectionInfoReaderTest, ParseTimeToExpireSeconds);
53
54  bool ParseConnectionInfo(const std::string& input, ConnectionInfo* info);
55  bool ParseProtocol(const std::string& input, int* protocol);
56  bool ParseTimeToExpireSeconds(const std::string& input,
57                                int64_t* time_to_expire_seconds);
58  bool ParseIsUnreplied(const std::string& input, bool* is_unreplied);
59  bool ParseIPAddress(const std::string& input,
60                      IPAddress* ip_address, bool* is_source);
61  bool ParsePort(const std::string& input, uint16_t* port, bool* is_source);
62
63  DISALLOW_COPY_AND_ASSIGN(ConnectionInfoReader);
64};
65
66}  // namespace shill
67
68#endif  // SHILL_CONNECTION_INFO_READER_H_
69