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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 #include <android-base/logging.h>
     18 
     19 #include "hidl_return_util.h"
     20 #include "hidl_struct_util.h"
     21 #include "wifi_ap_iface.h"
     22 #include "wifi_status_util.h"
     23 
     24 namespace android {
     25 namespace hardware {
     26 namespace wifi {
     27 namespace V1_3 {
     28 namespace implementation {
     29 using hidl_return_util::validateAndCall;
     30 
     31 WifiApIface::WifiApIface(
     32     const std::string& ifname,
     33     const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
     34     const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util,
     35     const std::weak_ptr<feature_flags::WifiFeatureFlags> feature_flags)
     36     : ifname_(ifname),
     37       legacy_hal_(legacy_hal),
     38       iface_util_(iface_util),
     39       feature_flags_(feature_flags),
     40       is_valid_(true) {
     41     if (feature_flags_.lock()->isApMacRandomizationDisabled()) {
     42         LOG(INFO) << "AP MAC randomization disabled";
     43         return;
     44     }
     45     LOG(INFO) << "AP MAC randomization enabled";
     46     // Set random MAC address
     47     std::array<uint8_t, 6> randomized_mac =
     48         iface_util_.lock()->getOrCreateRandomMacAddress();
     49     bool status = iface_util_.lock()->setMacAddress(ifname_, randomized_mac);
     50     if (!status) {
     51         LOG(ERROR) << "Failed to set random mac address";
     52     }
     53 }
     54 
     55 void WifiApIface::invalidate() {
     56     legacy_hal_.reset();
     57     is_valid_ = false;
     58 }
     59 
     60 bool WifiApIface::isValid() { return is_valid_; }
     61 
     62 std::string WifiApIface::getName() { return ifname_; }
     63 
     64 Return<void> WifiApIface::getName(getName_cb hidl_status_cb) {
     65     return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
     66                            &WifiApIface::getNameInternal, hidl_status_cb);
     67 }
     68 
     69 Return<void> WifiApIface::getType(getType_cb hidl_status_cb) {
     70     return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
     71                            &WifiApIface::getTypeInternal, hidl_status_cb);
     72 }
     73 
     74 Return<void> WifiApIface::setCountryCode(const hidl_array<int8_t, 2>& code,
     75                                          setCountryCode_cb hidl_status_cb) {
     76     return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
     77                            &WifiApIface::setCountryCodeInternal, hidl_status_cb,
     78                            code);
     79 }
     80 
     81 Return<void> WifiApIface::getValidFrequenciesForBand(
     82     WifiBand band, getValidFrequenciesForBand_cb hidl_status_cb) {
     83     return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
     84                            &WifiApIface::getValidFrequenciesForBandInternal,
     85                            hidl_status_cb, band);
     86 }
     87 
     88 std::pair<WifiStatus, std::string> WifiApIface::getNameInternal() {
     89     return {createWifiStatus(WifiStatusCode::SUCCESS), ifname_};
     90 }
     91 
     92 std::pair<WifiStatus, IfaceType> WifiApIface::getTypeInternal() {
     93     return {createWifiStatus(WifiStatusCode::SUCCESS), IfaceType::AP};
     94 }
     95 
     96 WifiStatus WifiApIface::setCountryCodeInternal(
     97     const std::array<int8_t, 2>& code) {
     98     legacy_hal::wifi_error legacy_status =
     99         legacy_hal_.lock()->setCountryCode(ifname_, code);
    100     return createWifiStatusFromLegacyError(legacy_status);
    101 }
    102 
    103 std::pair<WifiStatus, std::vector<WifiChannelInMhz>>
    104 WifiApIface::getValidFrequenciesForBandInternal(WifiBand band) {
    105     static_assert(sizeof(WifiChannelInMhz) == sizeof(uint32_t),
    106                   "Size mismatch");
    107     legacy_hal::wifi_error legacy_status;
    108     std::vector<uint32_t> valid_frequencies;
    109     std::tie(legacy_status, valid_frequencies) =
    110         legacy_hal_.lock()->getValidFrequenciesForBand(
    111             ifname_, hidl_struct_util::convertHidlWifiBandToLegacy(band));
    112     return {createWifiStatusFromLegacyError(legacy_status), valid_frequencies};
    113 }
    114 }  // namespace implementation
    115 }  // namespace V1_3
    116 }  // namespace wifi
    117 }  // namespace hardware
    118 }  // namespace android
    119