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_CLIENT_INTERFACE_IMPL_H_ 18 #define WIFICOND_CLIENT_INTERFACE_IMPL_H_ 19 20 #include <array> 21 #include <string> 22 23 #include <linux/if_ether.h> 24 25 #include <android-base/macros.h> 26 #include <utils/StrongPointer.h> 27 #include <wifi_system/interface_tool.h> 28 29 #include "android/net/wifi/nl80211/IClientInterface.h" 30 #include "android/net/wifi/nl80211/ISendMgmtFrameEvent.h" 31 #include "wificond/net/mlme_event_handler.h" 32 #include "wificond/net/netlink_utils.h" 33 #include "wificond/scanning/scanner_impl.h" 34 35 namespace android { 36 namespace wificond { 37 38 class ClientInterfaceBinder; 39 class ClientInterfaceImpl; 40 class ScanUtils; 41 42 class MlmeEventHandlerImpl : public MlmeEventHandler { 43 public: 44 MlmeEventHandlerImpl(ClientInterfaceImpl* client_interface); 45 ~MlmeEventHandlerImpl() override; 46 void OnConnect(std::unique_ptr<MlmeConnectEvent> event) override; 47 void OnRoam(std::unique_ptr<MlmeRoamEvent> event) override; 48 void OnAssociate(std::unique_ptr<MlmeAssociateEvent> event) override; 49 void OnDisconnect(std::unique_ptr<MlmeDisconnectEvent> event) override; 50 void OnDisassociate(std::unique_ptr<MlmeDisassociateEvent> event) override; 51 52 private: 53 ClientInterfaceImpl* client_interface_; 54 }; 55 56 // Holds the guts of how we control network interfaces capable of connecting to 57 // access points via wpa_supplicant. 58 // 59 // Because remote processes may hold on to the corresponding 60 // binder object past the lifetime of the local object, we are forced to 61 // keep this object separate from the binder representation of itself. 62 class ClientInterfaceImpl { 63 public: 64 ClientInterfaceImpl( 65 uint32_t wiphy_index, 66 const std::string& interface_name, 67 uint32_t interface_index, 68 const std::array<uint8_t, ETH_ALEN>& interface_mac_addr, 69 android::wifi_system::InterfaceTool* if_tool, 70 NetlinkUtils* netlink_utils, 71 ScanUtils* scan_utils); 72 virtual ~ClientInterfaceImpl(); 73 74 // Get a pointer to the binder representing this ClientInterfaceImpl. 75 android::sp<android::net::wifi::nl80211::IClientInterface> GetBinder() const; 76 77 bool GetPacketCounters(std::vector<int32_t>* out_packet_counters); 78 bool SignalPoll(std::vector<int32_t>* out_signal_poll_results); 79 const std::array<uint8_t, ETH_ALEN>& GetMacAddress(); GetInterfaceName()80 const std::string& GetInterfaceName() const { return interface_name_; } 81 void UpdateBandInfo(); 82 const BandInfo& GetBandInfo() const; GetScanner()83 const android::sp<ScannerImpl> GetScanner() { return scanner_; }; 84 virtual bool IsAssociated() const; 85 void Dump(std::stringstream* ss) const; 86 void SendMgmtFrame( 87 const std::vector<uint8_t>& frame, 88 const sp<::android::net::wifi::nl80211::ISendMgmtFrameEvent>& callback, 89 int32_t mcs); 90 91 private: 92 bool RefreshAssociateFreq(); 93 bool OnChannelSwitchEvent(uint32_t frequency); 94 95 const uint32_t wiphy_index_; 96 const std::string interface_name_; 97 const uint32_t interface_index_; 98 const std::array<uint8_t, ETH_ALEN> interface_mac_addr_; 99 android::wifi_system::InterfaceTool* const if_tool_; 100 NetlinkUtils* const netlink_utils_; 101 ScanUtils* const scan_utils_; 102 const std::unique_ptr<MlmeEventHandlerImpl> mlme_event_handler_; 103 const android::sp<ClientInterfaceBinder> binder_; 104 android::sp<ScannerImpl> scanner_; 105 106 // Cached information for this connection. 107 bool is_associated_; 108 std::array<uint8_t, ETH_ALEN> bssid_; 109 uint32_t associate_freq_; 110 111 // Capability information for this wiphy/interface. 112 BandInfo band_info_; 113 ScanCapabilities scan_capabilities_; 114 WiphyFeatures wiphy_features_; 115 116 // handler for frame tx status messages 117 bool frame_tx_in_progress_; 118 uint64_t frame_tx_status_cookie_; 119 std::function<void(bool was_acked)> on_frame_tx_status_event_handler_; 120 121 DISALLOW_COPY_AND_ASSIGN(ClientInterfaceImpl); 122 friend class MlmeEventHandlerImpl; 123 }; 124 125 } // namespace wificond 126 } // namespace android 127 128 #endif // WIFICOND_CLIENT_INTERFACE_IMPL_H_ 129