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140 lines
4.3 KiB
140 lines
4.3 KiB
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "wificond/net/mlme_event.h"
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#include <vector>
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#include <android-base/logging.h>
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#include "wificond/net/kernel-header-latest/nl80211.h"
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#include "wificond/net/nl80211_packet.h"
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using std::array;
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using std::unique_ptr;
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using std::vector;
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namespace android {
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namespace wificond {
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namespace {
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bool GetCommonFields(const NL80211Packet* packet,
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uint32_t* if_index,
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array<uint8_t, ETH_ALEN>* bssid) {
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if (!packet->GetAttributeValue(NL80211_ATTR_IFINDEX, if_index)) {
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LOG(ERROR) << "Failed to get NL80211_ATTR_IFINDEX";
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return false;
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}
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// Some MLME events do not contain MAC address.
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if (!packet->GetAttributeValue(NL80211_ATTR_MAC, bssid)) {
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LOG(DEBUG) << "Failed to get NL80211_ATTR_MAC";
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}
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return true;
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}
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} // namespace
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unique_ptr<MlmeAssociateEvent> MlmeAssociateEvent::InitFromPacket(
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const NL80211Packet* packet) {
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if (packet->GetCommand() != NL80211_CMD_ASSOCIATE) {
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return nullptr;
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}
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unique_ptr<MlmeAssociateEvent> associate_event(new MlmeAssociateEvent());
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if (!GetCommonFields(packet,
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&(associate_event->interface_index_),
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&(associate_event->bssid_))){
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return nullptr;
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}
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// According to wpa_supplicant, status code of an ASSOCIATE event should be
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// parsed from NL80211_ATTR_FRAME attribute.
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// TODO(nywang): Parse NL80211_ATTR_FRAME 80211 management frame and get
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// status code.
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associate_event->status_code_ = 0;
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associate_event->is_timeout_ = packet->HasAttribute(NL80211_ATTR_TIMED_OUT);
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return associate_event;
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}
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unique_ptr<MlmeConnectEvent> MlmeConnectEvent::InitFromPacket(
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const NL80211Packet* packet) {
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if (packet->GetCommand() != NL80211_CMD_CONNECT) {
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return nullptr;
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}
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unique_ptr<MlmeConnectEvent> connect_event(new MlmeConnectEvent());
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if (!GetCommonFields(packet,
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&(connect_event->interface_index_),
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&(connect_event->bssid_))){
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return nullptr;
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}
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if (!packet->GetAttributeValue(NL80211_ATTR_STATUS_CODE,
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&(connect_event->status_code_))) {
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LOG(WARNING) << "Failed to get NL80211_ATTR_STATUS_CODE";
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connect_event->status_code_ = 0;
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}
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connect_event->is_timeout_ = packet->HasAttribute(NL80211_ATTR_TIMED_OUT);
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return connect_event;
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}
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unique_ptr<MlmeRoamEvent> MlmeRoamEvent::InitFromPacket(
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const NL80211Packet* packet) {
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if (packet->GetCommand() != NL80211_CMD_ROAM) {
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return nullptr;
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}
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unique_ptr<MlmeRoamEvent> roam_event(new MlmeRoamEvent());
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if (!GetCommonFields(packet,
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&(roam_event->interface_index_),
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&(roam_event->bssid_))){
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return nullptr;
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}
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return roam_event;
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}
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unique_ptr<MlmeDisconnectEvent> MlmeDisconnectEvent::InitFromPacket(
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const NL80211Packet* packet) {
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if (packet->GetCommand() != NL80211_CMD_DISCONNECT) {
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return nullptr;
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}
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unique_ptr<MlmeDisconnectEvent> disconnect_event(new MlmeDisconnectEvent());
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if (!GetCommonFields(packet,
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&(disconnect_event->interface_index_),
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&(disconnect_event->bssid_))){
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return nullptr;
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}
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return disconnect_event;
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}
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unique_ptr<MlmeDisassociateEvent> MlmeDisassociateEvent::InitFromPacket(
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const NL80211Packet* packet) {
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if (packet->GetCommand() != NL80211_CMD_DISASSOCIATE) {
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return nullptr;
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}
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unique_ptr<MlmeDisassociateEvent> disassociate_event(new MlmeDisassociateEvent());
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if (!GetCommonFields(packet,
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&(disassociate_event->interface_index_),
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&(disassociate_event->bssid_))){
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return nullptr;
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}
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return disassociate_event;
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}
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} // namespace wificond
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} // namespace android
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