1/*
2 * Copyright (C) 2012 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 _INTERFACE_CONTROLLER_H
18#define _INTERFACE_CONTROLLER_H
19
20#include <functional>
21#include <string>
22
23#include <netdutils/Status.h>
24
25// TODO: move InterfaceController into android::net namespace.
26namespace android {
27namespace net {
28class StablePrivacyTest;
29}  // namespace net
30}  // namespace android
31
32class InterfaceController {
33public:
34    static void initializeAll();
35
36    static int setEnableIPv6(const char *interface, const int on);
37    static android::netdutils::Status setIPv6AddrGenMode(const std::string& interface, int mode);
38    static int setAcceptIPv6Ra(const char *interface, const int on);
39    static int setAcceptIPv6Dad(const char *interface, const int on);
40    static int setIPv6DadTransmits(const char *interface, const char *value);
41    static int setIPv6PrivacyExtensions(const char *interface, const int on);
42    static int setIPv6NdOffload(char* interface, const int on);
43    static int setMtu(const char *interface, const char *mtu);
44    static int addAddress(const char *interface, const char *addrString, int prefixLength);
45    static int delAddress(const char *interface, const char *addrString, int prefixLength);
46
47    // Read and write values in files of the form:
48    //     /proc/sys/net/<family>/<which>/<interface>/<parameter>
49    static int getParameter(
50            const char *family, const char *which, const char *interface, const char *parameter,
51            std::string *value);
52    static int setParameter(
53            const char *family, const char *which, const char *interface, const char *parameter,
54            const char *value);
55
56private:
57  friend class android::net::StablePrivacyTest;
58
59  using GetPropertyFn =
60      std::function<std::string(const std::string& key, const std::string& dflt)>;
61  using SetPropertyFn =
62      std::function<android::netdutils::Status(const std::string& key, const std::string& val)>;
63
64  // Helper function exported from this compilation unit for testing.
65  static android::netdutils::Status enableStablePrivacyAddresses(const std::string& iface,
66                                                                 GetPropertyFn getProperty,
67                                                                 SetPropertyFn setProperty);
68
69  static void setAcceptRA(const char* value);
70  static void setAcceptRARouteTable(int tableOrOffset);
71  static void setBaseReachableTimeMs(unsigned int millis);
72  static void setIPv6OptimisticMode(const char* value);
73
74  InterfaceController() = delete;
75  ~InterfaceController() = delete;
76};
77
78#endif
79