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// Copyright 2021 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <vector>
#include "common/bit_cast.h"
#include "common/common_types.h"
#include "common/logging/log.h"
#include "common/string_util.h"
#include "core/network/network_interface.h"
#ifdef _WIN32
#include <iphlpapi.h>
#else
#include <cerrno>
#include <ifaddrs.h>
#include <net/if.h>
#endif
namespace Network {
#ifdef _WIN32
std::vector<NetworkInterface> GetAvailableNetworkInterfaces() {
std::vector<IP_ADAPTER_ADDRESSES> adapter_addresses;
DWORD ret = ERROR_BUFFER_OVERFLOW;
DWORD buf_size = 0;
// retry up to 5 times
for (int i = 0; i < 5 && ret == ERROR_BUFFER_OVERFLOW; i++) {
ret = GetAdaptersAddresses(AF_INET, GAA_FLAG_SKIP_MULTICAST | GAA_FLAG_SKIP_DNS_SERVER,
nullptr, adapter_addresses.data(), &buf_size);
if (ret == ERROR_BUFFER_OVERFLOW) {
adapter_addresses.resize((buf_size / sizeof(IP_ADAPTER_ADDRESSES)) + 1);
} else {
break;
}
}
if (ret == NO_ERROR) {
std::vector<NetworkInterface> result;
for (auto current_address = adapter_addresses.data(); current_address != nullptr;
current_address = current_address->Next) {
if (current_address->FirstUnicastAddress == nullptr ||
current_address->FirstUnicastAddress->Address.lpSockaddr == nullptr) {
continue;
}
if (current_address->OperStatus != IfOperStatusUp) {
continue;
}
const auto ip_addr = Common::BitCast<struct sockaddr_in>(
*current_address->FirstUnicastAddress->Address.lpSockaddr)
.sin_addr;
result.push_back(NetworkInterface{
.name{Common::UTF16ToUTF8(std::wstring{current_address->FriendlyName})},
.ip_address{ip_addr}});
}
return result;
} else {
LOG_ERROR(Network, "Failed to get network interfaces with GetAdaptersAddresses");
return {};
}
}
#else
std::vector<NetworkInterface> GetAvailableNetworkInterfaces() {
std::vector<NetworkInterface> result;
struct ifaddrs* ifaddr = nullptr;
if (getifaddrs(&ifaddr) != 0) {
LOG_ERROR(Network, "Failed to get network interfaces with getifaddrs: {}",
std::strerror(errno));
return result;
}
for (auto ifa = ifaddr; ifa != nullptr; ifa = ifa->ifa_next) {
if (ifa->ifa_addr == nullptr) {
continue;
}
if (ifa->ifa_addr->sa_family != AF_INET) {
continue;
}
if ((ifa->ifa_flags & IFF_UP) == 0 || (ifa->ifa_flags & IFF_LOOPBACK) != 0) {
continue;
}
result.push_back(NetworkInterface{
.name{ifa->ifa_name},
.ip_address{Common::BitCast<struct sockaddr_in>(*ifa->ifa_addr).sin_addr}});
}
freeifaddrs(ifaddr);
return result;
}
#endif
} // namespace Network
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