Gabriel Biren | f3262f9 | 2022-07-15 23:25:39 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2022 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 "wifi_ap_iface.h" |
| 18 | |
| 19 | #include <android-base/logging.h> |
| 20 | |
| 21 | #include "aidl_return_util.h" |
| 22 | #include "aidl_struct_util.h" |
| 23 | #include "wifi_status_util.h" |
| 24 | |
| 25 | namespace aidl { |
| 26 | namespace android { |
| 27 | namespace hardware { |
| 28 | namespace wifi { |
| 29 | using aidl_return_util::validateAndCall; |
| 30 | |
| 31 | WifiApIface::WifiApIface(const std::string& ifname, const std::vector<std::string>& instances, |
| 32 | const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal, |
| 33 | const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util) |
| 34 | : ifname_(ifname), |
| 35 | instances_(instances), |
| 36 | legacy_hal_(legacy_hal), |
| 37 | iface_util_(iface_util), |
| 38 | is_valid_(true) {} |
| 39 | |
| 40 | void WifiApIface::invalidate() { |
| 41 | legacy_hal_.reset(); |
| 42 | is_valid_ = false; |
| 43 | } |
| 44 | |
| 45 | bool WifiApIface::isValid() { |
| 46 | return is_valid_; |
| 47 | } |
| 48 | |
| 49 | std::string WifiApIface::getName() { |
| 50 | return ifname_; |
| 51 | } |
| 52 | |
| 53 | void WifiApIface::removeInstance(std::string instance) { |
| 54 | instances_.erase(std::remove(instances_.begin(), instances_.end(), instance), instances_.end()); |
| 55 | } |
| 56 | |
| 57 | ndk::ScopedAStatus WifiApIface::getName(std::string* _aidl_return) { |
| 58 | return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID, |
| 59 | &WifiApIface::getNameInternal, _aidl_return); |
| 60 | } |
| 61 | |
| 62 | ndk::ScopedAStatus WifiApIface::setCountryCode(const std::array<uint8_t, 2>& in_code) { |
| 63 | return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID, |
| 64 | &WifiApIface::setCountryCodeInternal, in_code); |
| 65 | } |
| 66 | |
Gabriel Biren | f3262f9 | 2022-07-15 23:25:39 +0000 | [diff] [blame] | 67 | ndk::ScopedAStatus WifiApIface::setMacAddress(const std::array<uint8_t, 6>& in_mac) { |
| 68 | return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID, |
| 69 | &WifiApIface::setMacAddressInternal, in_mac); |
| 70 | } |
| 71 | |
| 72 | ndk::ScopedAStatus WifiApIface::getFactoryMacAddress(std::array<uint8_t, 6>* _aidl_return) { |
| 73 | return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID, |
| 74 | &WifiApIface::getFactoryMacAddressInternal, _aidl_return, |
| 75 | instances_.size() > 0 ? instances_[0] : ifname_); |
| 76 | } |
| 77 | |
| 78 | ndk::ScopedAStatus WifiApIface::resetToFactoryMacAddress() { |
| 79 | return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID, |
| 80 | &WifiApIface::resetToFactoryMacAddressInternal); |
| 81 | } |
| 82 | |
| 83 | ndk::ScopedAStatus WifiApIface::getBridgedInstances(std::vector<std::string>* _aidl_return) { |
| 84 | return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID, |
| 85 | &WifiApIface::getBridgedInstancesInternal, _aidl_return); |
| 86 | } |
| 87 | |
| 88 | std::pair<std::string, ndk::ScopedAStatus> WifiApIface::getNameInternal() { |
| 89 | return {ifname_, ndk::ScopedAStatus::ok()}; |
| 90 | } |
| 91 | |
| 92 | ndk::ScopedAStatus WifiApIface::setCountryCodeInternal(const std::array<uint8_t, 2>& code) { |
| 93 | legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->setCountryCode( |
| 94 | instances_.size() > 0 ? instances_[0] : ifname_, code); |
| 95 | return createWifiStatusFromLegacyError(legacy_status); |
| 96 | } |
| 97 | |
Gabriel Biren | f3262f9 | 2022-07-15 23:25:39 +0000 | [diff] [blame] | 98 | ndk::ScopedAStatus WifiApIface::setMacAddressInternal(const std::array<uint8_t, 6>& mac) { |
| 99 | // Support random MAC up to 2 interfaces |
| 100 | if (instances_.size() == 2) { |
| 101 | int rbyte = 1; |
| 102 | for (auto const& intf : instances_) { |
| 103 | std::array<uint8_t, 6> rmac = mac; |
| 104 | // reverse the bits to avoid collision |
| 105 | rmac[rbyte] = 0xff - rmac[rbyte]; |
| 106 | if (!iface_util_.lock()->setMacAddress(intf, rmac)) { |
| 107 | LOG(INFO) << "Failed to set random mac address on " << intf; |
| 108 | return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN); |
| 109 | } |
| 110 | rbyte++; |
| 111 | } |
| 112 | } |
| 113 | // It also needs to set mac address for bridged interface, otherwise the mac |
| 114 | // address of bridged interface will be changed after one of instance |
| 115 | // down. |
| 116 | if (!iface_util_.lock()->setMacAddress(ifname_, mac)) { |
| 117 | LOG(ERROR) << "Fail to config MAC for interface " << ifname_; |
| 118 | return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN); |
| 119 | } |
| 120 | return ndk::ScopedAStatus::ok(); |
| 121 | } |
| 122 | |
| 123 | std::pair<std::array<uint8_t, 6>, ndk::ScopedAStatus> WifiApIface::getFactoryMacAddressInternal( |
| 124 | const std::string& ifaceName) { |
| 125 | std::array<uint8_t, 6> mac = iface_util_.lock()->getFactoryMacAddress(ifaceName); |
| 126 | if (mac[0] == 0 && mac[1] == 0 && mac[2] == 0 && mac[3] == 0 && mac[4] == 0 && mac[5] == 0) { |
| 127 | return {mac, createWifiStatus(WifiStatusCode::ERROR_UNKNOWN)}; |
| 128 | } |
| 129 | return {mac, ndk::ScopedAStatus::ok()}; |
| 130 | } |
| 131 | |
| 132 | ndk::ScopedAStatus WifiApIface::resetToFactoryMacAddressInternal() { |
| 133 | std::pair<std::array<uint8_t, 6>, ndk::ScopedAStatus> getMacResult; |
| 134 | if (instances_.size() == 2) { |
| 135 | for (auto const& intf : instances_) { |
| 136 | getMacResult = getFactoryMacAddressInternal(intf); |
| 137 | LOG(DEBUG) << "Reset MAC to factory MAC on " << intf; |
| 138 | if (!getMacResult.second.isOk() || |
| 139 | !iface_util_.lock()->setMacAddress(intf, getMacResult.first)) { |
| 140 | return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN); |
| 141 | } |
| 142 | } |
| 143 | // We need to set mac address for bridged interface, otherwise the mac |
| 144 | // address of the bridged interface will be changed after one of the |
| 145 | // instances goes down. Thus we are generating a random MAC address for |
| 146 | // the bridged interface even if we got the request to reset the Factory |
| 147 | // MAC. This is because the bridged interface is an internal interface |
| 148 | // for the operation of bpf and other networking operations. |
| 149 | if (!iface_util_.lock()->setMacAddress(ifname_, |
| 150 | iface_util_.lock()->createRandomMacAddress())) { |
| 151 | LOG(ERROR) << "Fail to config MAC for bridged interface " << ifname_; |
| 152 | return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN); |
| 153 | } |
| 154 | } else { |
| 155 | getMacResult = getFactoryMacAddressInternal(ifname_); |
| 156 | LOG(DEBUG) << "Reset MAC to factory MAC on " << ifname_; |
| 157 | if (!getMacResult.second.isOk() || |
| 158 | !iface_util_.lock()->setMacAddress(ifname_, getMacResult.first)) { |
| 159 | return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN); |
| 160 | } |
| 161 | } |
| 162 | return ndk::ScopedAStatus::ok(); |
| 163 | } |
| 164 | |
| 165 | std::pair<std::vector<std::string>, ndk::ScopedAStatus> WifiApIface::getBridgedInstancesInternal() { |
| 166 | return {instances_, ndk::ScopedAStatus::ok()}; |
| 167 | } |
| 168 | |
| 169 | } // namespace wifi |
| 170 | } // namespace hardware |
| 171 | } // namespace android |
| 172 | } // namespace aidl |