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/*
* Copyright (C) 2020 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 "ifreqs.h"
#include "common.h"
#include <android-base/logging.h>
#include <android-base/unique_fd.h>
#include <map>
namespace android::netdevice::ifreqs {
static constexpr int defaultSocketDomain = AF_INET;
std::atomic_int socketDomain = defaultSocketDomain;
struct SocketParams {
int domain;
int type;
int protocol;
};
static const std::map<int, SocketParams> socketParams = {
{AF_INET, {AF_INET, SOCK_DGRAM, 0}},
{AF_CAN, {AF_CAN, SOCK_RAW, CAN_RAW}},
};
static SocketParams getSocketParams(int domain) {
if (socketParams.count(domain)) return socketParams.find(domain)->second;
auto params = socketParams.find(defaultSocketDomain)->second;
params.domain = domain;
return params;
}
bool send(unsigned long request, struct ifreq& ifr) {
const auto sp = getSocketParams(socketDomain);
base::unique_fd sock(socket(sp.domain, sp.type, sp.protocol));
if (!sock.ok()) {
LOG(ERROR) << "Can't create socket";
return false;
}
if (ioctl(sock.get(), request, &ifr) < 0) {
PLOG(ERROR) << "ioctl(" << std::hex << request << std::dec << ") failed";
return false;
}
return true;
}
struct ifreq fromName(const std::string& ifname) {
struct ifreq ifr = {};
strlcpy(ifr.ifr_name, ifname.c_str(), IF_NAMESIZE);
return ifr;
}
} // namespace android::netdevice::ifreqs
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