88 lines
2.3 KiB
C++
88 lines
2.3 KiB
C++
//
|
|
// Copyright (C) 2015 The Android Open Source Project
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
//
|
|
|
|
#include "dhcp_client/device_info.h"
|
|
|
|
#include <net/if.h>
|
|
#include <netinet/in.h>
|
|
#include <sys/ioctl.h>
|
|
|
|
#include <memory>
|
|
#include <string>
|
|
|
|
#include <base/logging.h>
|
|
|
|
using shill::ByteString;
|
|
using shill::Sockets;
|
|
using shill::RTNLHandler;
|
|
using std::unique_ptr;
|
|
|
|
namespace {
|
|
|
|
base::LazyInstance<dhcp_client::DeviceInfo> g_dhcp_device_info
|
|
= LAZY_INSTANCE_INITIALIZER;
|
|
|
|
} // namespace
|
|
|
|
namespace dhcp_client {
|
|
|
|
DeviceInfo::DeviceInfo()
|
|
: sockets_(new Sockets()),
|
|
rtnl_handler_(RTNLHandler::GetInstance()) {
|
|
}
|
|
|
|
DeviceInfo::~DeviceInfo() {}
|
|
|
|
DeviceInfo* DeviceInfo::GetInstance() {
|
|
return g_dhcp_device_info.Pointer();
|
|
}
|
|
|
|
bool DeviceInfo::GetDeviceInfo(const std::string& interface_name,
|
|
ByteString* mac_address,
|
|
unsigned int* interface_index ) {
|
|
struct ifreq ifr;
|
|
size_t if_name_len = interface_name.size();
|
|
if (if_name_len > IFNAMSIZ) {
|
|
LOG(ERROR) << "Interface name is too long.";
|
|
return false;
|
|
}
|
|
memcpy(ifr.ifr_name, interface_name.c_str(), if_name_len);
|
|
ifr.ifr_name[if_name_len] = 0;
|
|
int fd = sockets_->Socket(AF_INET, SOCK_DGRAM, 0);
|
|
if (fd == -1) {
|
|
PLOG(ERROR) << "Failed to create socket.";
|
|
return false;
|
|
}
|
|
|
|
shill::ScopedSocketCloser socket_closer(sockets_.get(), fd);
|
|
// Get interface hardware address
|
|
if (sockets_->Ioctl(fd, SIOCGIFHWADDR, &ifr) == -1) {
|
|
PLOG(ERROR) << "Failed to get interface hardware address.";
|
|
return false;
|
|
}
|
|
int if_index = rtnl_handler_->GetInterfaceIndex(interface_name);
|
|
if (if_index == -1) {
|
|
LOG(ERROR) << "Unable to get interface index.";
|
|
return false;
|
|
}
|
|
*interface_index = if_index;
|
|
*mac_address = ByteString(ifr.ifr_hwaddr.sa_data, IFHWADDRLEN);
|
|
|
|
return true;
|
|
}
|
|
|
|
} // namespace dhcp_client
|
|
|