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 27 #include "android/net/wifi/BnWificond.h" 28 #include "android/net/wifi/IApInterface.h" 29 #include "android/net/wifi/IClientInterface.h" 30 #include "android/net/wifi/IInterfaceEventCallback.h" 31 32 #include "wificond/ap_interface_impl.h" 33 #include "wificond/client_interface_impl.h" 34 35 namespace android { 36 namespace wificond { 37 38 class NL80211Packet; 39 class NetlinkUtils; 40 class ScanUtils; 41 42 struct InterfaceInfo; 43 44 class Server : public android::net::wifi::BnWificond { 45 public: 46 Server(std::unique_ptr<wifi_system::InterfaceTool> if_tool, 47 std::unique_ptr<wifi_system::SupplicantManager> supplicant_man, 48 std::unique_ptr<wifi_system::HostapdManager> hostapd_man, 49 NetlinkUtils* netlink_utils, 50 ScanUtils* scan_utils); 51 ~Server() override = default; 52 53 android::binder::Status RegisterCallback( 54 const android::sp<android::net::wifi::IInterfaceEventCallback>& 55 callback) override; 56 android::binder::Status UnregisterCallback( 57 const android::sp<android::net::wifi::IInterfaceEventCallback>& 58 callback) override; 59 60 android::binder::Status createApInterface( 61 android::sp<android::net::wifi::IApInterface>* 62 created_interface) override; 63 64 android::binder::Status createClientInterface( 65 android::sp<android::net::wifi::IClientInterface>* 66 created_interface) override; 67 68 android::binder::Status tearDownInterfaces() override; 69 70 android::binder::Status GetClientInterfaces( 71 std::vector<android::sp<android::IBinder>>* out_client_ifs) override; 72 android::binder::Status GetApInterfaces( 73 std::vector<android::sp<android::IBinder>>* out_ap_ifs) override; 74 status_t dump(int fd, const Vector<String16>& args) override; 75 76 // Call this once on startup. It ignores all the invariants held 77 // in wificond and tries to restore ourselves to a blank state by 78 // killing userspace daemons and cleaning up the interface state. 79 void CleanUpSystemState(); 80 81 private: 82 // Request interface information from kernel and setup local interface object. 83 // This assumes that interface should be in STATION mode. Even if we setup 84 // interface on behalf of createApInterace(), it is Hostapd that configure 85 // the interface to Ap mode later. 86 // Returns true on success, false otherwise. 87 bool SetupInterface(InterfaceInfo* interface); 88 bool RefreshWiphyIndex(); 89 void LogSupportedBands(); 90 void OnRegDomainChanged(std::string& country_code); 91 void BroadcastClientInterfaceReady( 92 android::sp<android::net::wifi::IClientInterface> network_interface); 93 void BroadcastApInterfaceReady( 94 android::sp<android::net::wifi::IApInterface> network_interface); 95 void BroadcastClientInterfaceTornDown( 96 android::sp<android::net::wifi::IClientInterface> network_interface); 97 void BroadcastApInterfaceTornDown( 98 android::sp<android::net::wifi::IApInterface> network_interface); 99 void MarkDownAllInterfaces(); 100 101 const std::unique_ptr<wifi_system::InterfaceTool> if_tool_; 102 const std::unique_ptr<wifi_system::SupplicantManager> supplicant_manager_; 103 const std::unique_ptr<wifi_system::HostapdManager> hostapd_manager_; 104 NetlinkUtils* const netlink_utils_; 105 ScanUtils* const scan_utils_; 106 107 uint32_t wiphy_index_; 108 std::vector<std::unique_ptr<ApInterfaceImpl>> ap_interfaces_; 109 std::vector<std::unique_ptr<ClientInterfaceImpl>> client_interfaces_; 110 std::vector<android::sp<android::net::wifi::IInterfaceEventCallback>> 111 interface_event_callbacks_; 112 113 // Cached interface list from kernel. 114 std::vector<InterfaceInfo> interfaces_; 115 116 DISALLOW_COPY_AND_ASSIGN(Server); 117 }; 118 119 } // namespace wificond 120 } // namespace android 121 122 #endif // WIFICOND_SERVER_H_ 123