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(),
126 *created_interface = client_interface->GetBinder();
127 client_interfaces_.push_back(std::move(client_interface));
128 BroadcastClientInterfaceReady(client_interfaces_.back()->GetBinder());
133 Status Server::tearDownInterfaces() {
134 for (auto& it : client_interfaces_) {
135 BroadcastClientInterfaceTornDown(it->GetBinder());
137 client_interfaces_.clear();
139 for (auto& it : ap_interfaces_) {
140 BroadcastApInterfaceTornDown(it->GetBinder());
142 ap_interfaces_.clear();
144 if (!driver_tool_->UnloadDriver()) {
145 LOG(ERROR) << "Failed to unload WiFi driver!";
150 void Server::CleanUpSystemState() {
151 supplicant_manager_->StopSupplicant();
152 hostapd_manager_->StopHostapd();
154 uint32_t phy_index = 0;
155 uint32_t if_index = 0;
158 if (netlink_utils_->GetWiphyIndex(&phy_index) &&
159 netlink_utils_->GetInterfaceInfo(phy_index,
163 // If the kernel knows about a network interface, mark it as down.
164 // This prevents us from beaconing as an AP, or remaining associated
166 if_tool_->SetUpState(if_name.c_str(), false);
168 // "unloading the driver" is frequently a no-op in systems that
169 // don't have kernel modules, but just in case.
170 driver_tool_->UnloadDriver();
173 bool Server::SetupInterfaceForMode(int mode,
174 string* interface_name,
175 uint32_t* interface_index,
176 vector<uint8_t>* interface_mac_addr) {
177 if (!ap_interfaces_.empty() || !client_interfaces_.empty()) {
178 // In the future we may support multiple interfaces at once. However,
179 // today, we support just one.
180 LOG(ERROR) << "Cannot create AP interface when other interfaces exist";
185 if (!driver_tool_->LoadDriver()) {
186 LOG(ERROR) << "Failed to load WiFi driver!";
189 if (!driver_tool_->ChangeFirmwareMode(mode)) {
190 LOG(ERROR) << "Failed to change WiFi firmware mode!";
194 if (!RefreshWiphyIndex()) {
198 if (!netlink_utils_->GetInterfaceInfo(wiphy_index_,
201 interface_mac_addr)) {
202 LOG(ERROR) << "Failed to get interface info from kernel";
209 bool Server::RefreshWiphyIndex() {
210 if (!netlink_utils_->GetWiphyIndex(&wiphy_index_)) {
211 LOG(ERROR) << "Failed to get wiphy index";
217 void Server::BroadcastClientInterfaceReady(
218 sp<IClientInterface> network_interface) {
219 for (auto& it : interface_event_callbacks_) {
220 it->OnClientInterfaceReady(network_interface);
224 void Server::BroadcastApInterfaceReady(
225 sp<IApInterface> network_interface) {
226 for (auto& it : interface_event_callbacks_) {
227 it->OnApInterfaceReady(network_interface);
231 void Server::BroadcastClientInterfaceTornDown(
232 sp<IClientInterface> network_interface) {
233 for (auto& it : interface_event_callbacks_) {
234 it->OnClientTorndownEvent(network_interface);
238 void Server::BroadcastApInterfaceTornDown(
239 sp<IApInterface> network_interface) {
240 for (auto& it : interface_event_callbacks_) {
241 it->OnApTorndownEvent(network_interface);
245 } // namespace wificond
246 } // namespace android