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 "wificond/ap_interface_impl.h"
18
19 #include <android-base/logging.h>
20
21 #include "wificond/net/netlink_utils.h"
22
23 #include "wificond/ap_interface_binder.h"
24 #include "wificond/logging_utils.h"
25
26 using android::net::wifi::nl80211::IApInterface;
27 using android::wifi_system::InterfaceTool;
28 using android::net::wifi::nl80211::NativeWifiClient;
29 using std::array;
30 using std::endl;
31 using std::string;
32 using std::unique_ptr;
33 using std::vector;
34
35 using namespace std::placeholders;
36
37 namespace android {
38 namespace wificond {
39
ApInterfaceImpl(const string & interface_name,uint32_t interface_index,NetlinkUtils * netlink_utils,InterfaceTool * if_tool)40 ApInterfaceImpl::ApInterfaceImpl(const string& interface_name,
41 uint32_t interface_index,
42 NetlinkUtils* netlink_utils,
43 InterfaceTool* if_tool)
44 : interface_name_(interface_name),
45 interface_index_(interface_index),
46 netlink_utils_(netlink_utils),
47 if_tool_(if_tool),
48 binder_(new ApInterfaceBinder(this)) {
49 // This log keeps compiler happy.
50 LOG(DEBUG) << "Created ap interface " << interface_name_
51 << " with index " << interface_index_;
52
53 netlink_utils_->SubscribeStationEvent(
54 interface_index_,
55 std::bind(&ApInterfaceImpl::OnStationEvent,
56 this,
57 _1, _2));
58 netlink_utils_->SubscribeChannelSwitchEvent(
59 interface_index_,
60 std::bind(&ApInterfaceImpl::OnChannelSwitchEvent, this, _1, _2));
61
62 }
63
~ApInterfaceImpl()64 ApInterfaceImpl::~ApInterfaceImpl() {
65 binder_->NotifyImplDead();
66 if_tool_->SetUpState(interface_name_.c_str(), false);
67 netlink_utils_->UnsubscribeStationEvent(interface_index_);
68 netlink_utils_->UnsubscribeChannelSwitchEvent(interface_index_);
69 }
70
GetBinder() const71 sp<IApInterface> ApInterfaceImpl::GetBinder() const {
72 return binder_;
73 }
74
Dump(std::stringstream * ss) const75 void ApInterfaceImpl::Dump(std::stringstream* ss) const {
76 *ss << "------- Dump of AP interface with index: "
77 << interface_index_ << " and name: " << interface_name_
78 << "-------" << endl;
79 *ss << "------- Dump End -------" << endl;
80 }
81
OnStationEvent(StationEvent event,const array<uint8_t,ETH_ALEN> & mac_address)82 void ApInterfaceImpl::OnStationEvent(
83 StationEvent event,
84 const array<uint8_t, ETH_ALEN>& mac_address) {
85 vector<uint8_t> mac_return_address = vector<uint8_t>(mac_address.begin(), mac_address.end());
86
87 NativeWifiClient station;
88 station.mac_address_ = mac_return_address;
89
90 if (event == NEW_STATION) {
91 LOG(INFO) << "New station "
92 << LoggingUtils::GetMacString(mac_address)
93 << " connected to hotspot"
94 << " using interface "
95 << interface_name_;
96 LOG(INFO) << "Sending notifications for station add event";
97 binder_->NotifyConnectedClientsChanged(station, true);
98 } else if (event == DEL_STATION) {
99 LOG(INFO) << "Station "
100 << LoggingUtils::GetMacString(mac_address)
101 << " disassociated from hotspot";
102 LOG(DEBUG) << "Sending notifications for station leave event";
103 binder_->NotifyConnectedClientsChanged(station, false);
104 }
105 }
106
107
OnChannelSwitchEvent(uint32_t frequency,ChannelBandwidth bandwidth)108 void ApInterfaceImpl::OnChannelSwitchEvent(uint32_t frequency,
109 ChannelBandwidth bandwidth) {
110 LOG(INFO) << "New channel on frequency: " << frequency
111 << " with bandwidth: " << LoggingUtils::GetBandwidthString(bandwidth);
112 binder_->NotifySoftApChannelSwitched(frequency, bandwidth);
113 }
114
115 } // namespace wificond
116 } // namespace android
117