2 * Copyright (C) 2016 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #include "wificond/server.h"
19 #include <android-base/logging.h>
21 #include "wificond/net/netlink_utils.h"
22 #include "wificond/scanning/scan_utils.h"
24 using android::binder::Status;
26 using android::IBinder;
29 using std::unique_ptr;
30 using android::net::wifi::IApInterface;
31 using android::net::wifi::IClientInterface;
32 using android::net::wifi::IInterfaceEventCallback;
33 using android::wifi_hal::DriverTool;
34 using android::wifi_system::HalTool;
35 using android::wifi_system::HostapdManager;
36 using android::wifi_system::InterfaceTool;
37 using android::wifi_system::SupplicantManager;
42 Server::Server(unique_ptr<HalTool> hal_tool,
43 unique_ptr<InterfaceTool> if_tool,
44 unique_ptr<DriverTool> driver_tool,
45 unique_ptr<SupplicantManager> supplicant_manager,
46 unique_ptr<HostapdManager> hostapd_manager,
47 NetlinkUtils* netlink_utils,
48 ScanUtils* scan_utils)
49 : hal_tool_(std::move(hal_tool)),
50 if_tool_(std::move(if_tool)),
51 driver_tool_(std::move(driver_tool)),
52 supplicant_manager_(std::move(supplicant_manager)),
53 hostapd_manager_(std::move(hostapd_manager)),
54 netlink_utils_(netlink_utils),
55 scan_utils_(scan_utils) {
58 Status Server::RegisterCallback(const sp<IInterfaceEventCallback>& callback) {
59 for (auto& it : interface_event_callbacks_) {
60 if (IInterface::asBinder(callback) == IInterface::asBinder(it)) {
61 LOG(WARNING) << "Ignore duplicate interface event callback registration";
65 LOG(INFO) << "New interface event callback registered";
66 interface_event_callbacks_.push_back(callback);
70 Status Server::UnregisterCallback(const sp<IInterfaceEventCallback>& callback) {
71 for (auto it = interface_event_callbacks_.begin();
72 it != interface_event_callbacks_.end();
74 if (IInterface::asBinder(callback) == IInterface::asBinder(*it)) {
75 interface_event_callbacks_.erase(it);
76 LOG(INFO) << "Unregister interface event callback";
80 LOG(WARNING) << "Failed to find registered interface event callback"
86 Status Server::createApInterface(sp<IApInterface>* created_interface) {
87 string interface_name;
88 uint32_t interface_index;
89 vector<uint8_t> interface_mac_addr;
90 if (!SetupInterfaceForMode(DriverTool::kFirmwareModeAp,
93 &interface_mac_addr)) {
94 return Status::ok(); // Logging was done internally
97 unique_ptr<ApInterfaceImpl> ap_interface(new ApInterfaceImpl(
101 hostapd_manager_.get()));
102 *created_interface = ap_interface->GetBinder();
103 ap_interfaces_.push_back(std::move(ap_interface));
104 BroadcastApInterfaceReady(ap_interfaces_.back()->GetBinder());
109 Status Server::createClientInterface(sp<IClientInterface>* created_interface) {
110 string interface_name;
111 uint32_t interface_index;
112 vector<uint8_t> interface_mac_addr;
113 if (!SetupInterfaceForMode(DriverTool::kFirmwareModeSta,
116 &interface_mac_addr)) {
117 return Status::ok(); // Logging was done internally
120 unique_ptr<ClientInterfaceImpl> client_interface(new ClientInterfaceImpl(
124 supplicant_manager_.get(),
127 *created_interface = client_interface->GetBinder();
128 client_interfaces_.push_back(std::move(client_interface));
129 BroadcastClientInterfaceReady(client_interfaces_.back()->GetBinder());
134 Status Server::tearDownInterfaces() {
135 for (auto& it : client_interfaces_) {
136 BroadcastClientInterfaceTornDown(it->GetBinder());
138 client_interfaces_.clear();
140 for (auto& it : ap_interfaces_) {
141 BroadcastApInterfaceTornDown(it->GetBinder());
143 ap_interfaces_.clear();
145 if (!driver_tool_->UnloadDriver()) {
146 LOG(ERROR) << "Failed to unload WiFi driver!";
151 Status Server::GetClientInterfaces(vector<sp<IBinder>>* out_client_interfaces) {
152 vector<sp<android::IBinder>> client_interfaces_binder;
153 for (auto& it : client_interfaces_) {
154 out_client_interfaces->push_back(asBinder(it->GetBinder()));
156 return binder::Status::ok();
159 Status Server::GetApInterfaces(vector<sp<IBinder>>* out_ap_interfaces) {
160 vector<sp<IBinder>> ap_interfaces_binder;
161 for (auto& it : ap_interfaces_) {
162 out_ap_interfaces->push_back(asBinder(it->GetBinder()));
164 return binder::Status::ok();
167 void Server::CleanUpSystemState() {
168 supplicant_manager_->StopSupplicant();
169 hostapd_manager_->StopHostapd();
171 uint32_t phy_index = 0;
172 uint32_t if_index = 0;
175 if (netlink_utils_->GetWiphyIndex(&phy_index) &&
176 netlink_utils_->GetInterfaceInfo(phy_index,
180 // If the kernel knows about a network interface, mark it as down.
181 // This prevents us from beaconing as an AP, or remaining associated
183 if_tool_->SetUpState(if_name.c_str(), false);
185 // "unloading the driver" is frequently a no-op in systems that
186 // don't have kernel modules, but just in case.
187 driver_tool_->UnloadDriver();
190 bool Server::SetupInterfaceForMode(int mode,
191 string* interface_name,
192 uint32_t* interface_index,
193 vector<uint8_t>* interface_mac_addr) {
194 if (!ap_interfaces_.empty() || !client_interfaces_.empty()) {
195 // In the future we may support multiple interfaces at once. However,
196 // today, we support just one.
197 LOG(ERROR) << "Cannot create AP interface when other interfaces exist";
202 if (!driver_tool_->LoadDriver()) {
203 LOG(ERROR) << "Failed to load WiFi driver!";
206 if (!driver_tool_->ChangeFirmwareMode(mode)) {
207 LOG(ERROR) << "Failed to change WiFi firmware mode!";
211 if (!RefreshWiphyIndex()) {
215 if (!netlink_utils_->GetInterfaceInfo(wiphy_index_,
218 interface_mac_addr)) {
219 LOG(ERROR) << "Failed to get interface info from kernel";
226 bool Server::RefreshWiphyIndex() {
227 if (!netlink_utils_->GetWiphyIndex(&wiphy_index_)) {
228 LOG(ERROR) << "Failed to get wiphy index";
234 void Server::BroadcastClientInterfaceReady(
235 sp<IClientInterface> network_interface) {
236 for (auto& it : interface_event_callbacks_) {
237 it->OnClientInterfaceReady(network_interface);
241 void Server::BroadcastApInterfaceReady(
242 sp<IApInterface> network_interface) {
243 for (auto& it : interface_event_callbacks_) {
244 it->OnApInterfaceReady(network_interface);
248 void Server::BroadcastClientInterfaceTornDown(
249 sp<IClientInterface> network_interface) {
250 for (auto& it : interface_event_callbacks_) {
251 it->OnClientTorndownEvent(network_interface);
255 void Server::BroadcastApInterfaceTornDown(
256 sp<IApInterface> network_interface) {
257 for (auto& it : interface_event_callbacks_) {
258 it->OnApTorndownEvent(network_interface);
262 } // namespace wificond
263 } // namespace android