1/*
2 * Copyright (C) 2016 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 WIFICOND_SERVER_H_
18#define WIFICOND_SERVER_H_
19
20#include <memory>
21#include <string>
22#include <vector>
23
24#include <android-base/macros.h>
25#include <wifi_system/interface_tool.h>
26#include <wifi_system/supplicant_manager.h>
27
28#include "android/net/wifi/BnWificond.h"
29#include "android/net/wifi/IApInterface.h"
30#include "android/net/wifi/IClientInterface.h"
31#include "android/net/wifi/IInterfaceEventCallback.h"
32
33#include "wificond/ap_interface_impl.h"
34#include "wificond/client_interface_impl.h"
35
36namespace android {
37namespace wificond {
38
39class NL80211Packet;
40class NetlinkUtils;
41class ScanUtils;
42
43struct InterfaceInfo;
44
45class Server : public android::net::wifi::BnWificond {
46 public:
47  Server(std::unique_ptr<wifi_system::InterfaceTool> if_tool,
48         std::unique_ptr<wifi_system::SupplicantManager> supplicant_man,
49         std::unique_ptr<wifi_system::HostapdManager> hostapd_man,
50         NetlinkUtils* netlink_utils,
51         ScanUtils* scan_utils);
52  ~Server() override = default;
53
54  android::binder::Status RegisterCallback(
55      const android::sp<android::net::wifi::IInterfaceEventCallback>&
56          callback) override;
57  android::binder::Status UnregisterCallback(
58      const android::sp<android::net::wifi::IInterfaceEventCallback>&
59          callback) override;
60  // Returns a vector of available frequencies for 2.4GHz channels.
61  android::binder::Status getAvailable2gChannels(
62      ::std::unique_ptr<::std::vector<int32_t>>* out_frequencies) override;
63  // Returns a vector of available frequencies for 5GHz non-DFS channels.
64  android::binder::Status getAvailable5gNonDFSChannels(
65      ::std::unique_ptr<::std::vector<int32_t>>* out_frequencies) override;
66  // Returns a vector of available frequencies for DFS channels.
67  android::binder::Status getAvailableDFSChannels(
68      ::std::unique_ptr<::std::vector<int32_t>>* out_frequencies) override;
69
70  android::binder::Status createApInterface(
71      const std::string& iface_name,
72      android::sp<android::net::wifi::IApInterface>*
73          created_interface) override;
74
75  android::binder::Status createClientInterface(
76      const std::string& iface_name,
77      android::sp<android::net::wifi::IClientInterface>*
78          created_interface) override;
79
80  android::binder::Status tearDownApInterface(
81      const std::string& iface_name,
82      bool* out_success) override;
83
84  android::binder::Status tearDownClientInterface(
85      const std::string& iface_name,
86      bool* out_success) override;
87
88  android::binder::Status tearDownInterfaces() override;
89  android::binder::Status enableSupplicant(bool* success) override;
90  android::binder::Status disableSupplicant(bool* success) override;
91
92  android::binder::Status GetClientInterfaces(
93      std::vector<android::sp<android::IBinder>>* out_client_ifs) override;
94  android::binder::Status GetApInterfaces(
95      std::vector<android::sp<android::IBinder>>* out_ap_ifs) override;
96  status_t dump(int fd, const Vector<String16>& args) override;
97
98 private:
99  // Request interface information from kernel and setup local interface object.
100  // This assumes that interface should be in STATION mode. Even if we setup
101  // interface on behalf of createApInterace(), it is Hostapd that configure
102  // the interface to Ap mode later.
103  // Returns true on success, false otherwise.
104  bool SetupInterface(const std::string& iface_name, InterfaceInfo* interface);
105  bool RefreshWiphyIndex();
106  void LogSupportedBands();
107  void OnRegDomainChanged(std::string& country_code);
108  void BroadcastClientInterfaceReady(
109      android::sp<android::net::wifi::IClientInterface> network_interface);
110  void BroadcastApInterfaceReady(
111      android::sp<android::net::wifi::IApInterface> network_interface);
112  void BroadcastClientInterfaceTornDown(
113      android::sp<android::net::wifi::IClientInterface> network_interface);
114  void BroadcastApInterfaceTornDown(
115      android::sp<android::net::wifi::IApInterface> network_interface);
116  void MarkDownAllInterfaces();
117
118  const std::unique_ptr<wifi_system::InterfaceTool> if_tool_;
119  const std::unique_ptr<wifi_system::SupplicantManager> supplicant_manager_;
120  const std::unique_ptr<wifi_system::HostapdManager> hostapd_manager_;
121  NetlinkUtils* const netlink_utils_;
122  ScanUtils* const scan_utils_;
123
124  uint32_t wiphy_index_;
125  std::map<std::string, std::unique_ptr<ApInterfaceImpl>> ap_interfaces_;
126  std::map<std::string, std::unique_ptr<ClientInterfaceImpl>> client_interfaces_;
127  std::vector<android::sp<android::net::wifi::IInterfaceEventCallback>>
128      interface_event_callbacks_;
129
130  // Cached interface list from kernel.
131  std::vector<InterfaceInfo> interfaces_;
132
133  DISALLOW_COPY_AND_ASSIGN(Server);
134};
135
136}  // namespace wificond
137}  // namespace android
138
139#endif  // WIFICOND_SERVER_H_
140