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      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_SCANNER_IMPL_H_
     18 #define WIFICOND_SCANNER_IMPL_H_
     19 
     20 #include <vector>
     21 
     22 #include <android-base/macros.h>
     23 #include <binder/Status.h>
     24 
     25 #include "android/net/wifi/BnWifiScannerImpl.h"
     26 #include "wificond/net/netlink_utils.h"
     27 
     28 namespace android {
     29 namespace wificond {
     30 
     31 class ClientInterfaceImpl;
     32 class ScanUtils;
     33 
     34 class ScannerImpl : public android::net::wifi::BnWifiScannerImpl {
     35  public:
     36   ScannerImpl(uint32_t wiphy_index,
     37               uint32_t interface_index,
     38               const ScanCapabilities& scan_capabilities,
     39               const WiphyFeatures& wiphy_features,
     40               ClientInterfaceImpl* client_interface,
     41               NetlinkUtils* netlink_utils,
     42               ScanUtils* scan_utils);
     43   ~ScannerImpl();
     44   // Returns a vector of available frequencies for 2.4GHz channels.
     45   ::android::binder::Status getAvailable2gChannels(
     46       ::std::unique_ptr<::std::vector<int32_t>>* out_frequencies) override;
     47   // Returns a vector of available frequencies for 5GHz non-DFS channels.
     48   ::android::binder::Status getAvailable5gNonDFSChannels(
     49       ::std::unique_ptr<::std::vector<int32_t>>* out_frequencies) override;
     50   // Returns a vector of available frequencies for DFS channels.
     51   ::android::binder::Status getAvailableDFSChannels(
     52       ::std::unique_ptr<::std::vector<int32_t>>* out_frequencies) override;
     53   // Get the latest scan results from kernel.
     54   ::android::binder::Status getScanResults(
     55       std::vector<com::android::server::wifi::wificond::NativeScanResult>*
     56           out_scan_results) override;
     57   ::android::binder::Status scan(
     58       const ::com::android::server::wifi::wificond::SingleScanSettings&
     59           scan_settings,
     60       bool* out_success) override;
     61   ::android::binder::Status startPnoScan(
     62       const ::com::android::server::wifi::wificond::PnoSettings& pno_settings,
     63       bool* out_success) override;
     64   ::android::binder::Status stopPnoScan(bool* out_success) override;
     65   ::android::binder::Status abortScan() override;
     66 
     67   ::android::binder::Status subscribeScanEvents(
     68       const ::android::sp<::android::net::wifi::IScanEvent>& handler) override;
     69   ::android::binder::Status unsubscribeScanEvents() override;
     70   ::android::binder::Status subscribePnoScanEvents(
     71       const ::android::sp<::android::net::wifi::IPnoScanEvent>& handler) override;
     72   ::android::binder::Status unsubscribePnoScanEvents() override;
     73   void Invalidate();
     74 
     75  private:
     76   bool CheckIsValid();
     77   void OnScanResultsReady(
     78       uint32_t interface_index,
     79       bool aborted,
     80       std::vector<std::vector<uint8_t>>& ssids,
     81       std::vector<uint32_t>& frequencies);
     82   void OnSchedScanResultsReady(uint32_t interface_index, bool scan_stopped);
     83   void LogSsidList(std::vector<std::vector<uint8_t>>& ssid_list,
     84                    std::string prefix);
     85 
     86   // Boolean variables describing current scanner status.
     87   bool valid_;
     88   bool scan_started_;
     89   bool pno_scan_started_;
     90 
     91   const uint32_t wiphy_index_;
     92   const uint32_t interface_index_;
     93 
     94   // Scanning relevant capability information for this wiphy/interface.
     95   ScanCapabilities scan_capabilities_;
     96   WiphyFeatures wiphy_features_;
     97 
     98   ClientInterfaceImpl* client_interface_;
     99   NetlinkUtils* const netlink_utils_;
    100   ScanUtils* const scan_utils_;
    101   ::android::sp<::android::net::wifi::IPnoScanEvent> pno_scan_event_handler_;
    102   ::android::sp<::android::net::wifi::IScanEvent> scan_event_handler_;
    103 
    104   DISALLOW_COPY_AND_ASSIGN(ScannerImpl);
    105 };
    106 
    107 }  // namespace wificond
    108 }  // namespace android
    109 
    110 #endif  // WIFICOND_SCANNER_IMPL_H_
    111