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network_interface: Cleanup code
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a32a7dacf4
commit
871e1c6315
1 changed files with 100 additions and 93 deletions
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@ -37,73 +37,73 @@ std::vector<NetworkInterface> GetAvailableNetworkInterfaces() {
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AF_INET, GAA_FLAG_SKIP_MULTICAST | GAA_FLAG_SKIP_DNS_SERVER | GAA_FLAG_INCLUDE_GATEWAYS,
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nullptr, adapter_addresses.data(), &buf_size);
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if (ret == ERROR_BUFFER_OVERFLOW) {
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adapter_addresses.resize((buf_size / sizeof(IP_ADAPTER_ADDRESSES)) + 1);
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} else {
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if (ret != ERROR_BUFFER_OVERFLOW) {
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break;
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}
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adapter_addresses.resize((buf_size / sizeof(IP_ADAPTER_ADDRESSES)) + 1);
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}
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if (ret == NO_ERROR) {
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std::vector<NetworkInterface> result;
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for (auto current_address = adapter_addresses.data(); current_address != nullptr;
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current_address = current_address->Next) {
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if (current_address->FirstUnicastAddress == nullptr ||
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current_address->FirstUnicastAddress->Address.lpSockaddr == nullptr) {
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continue;
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}
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if (current_address->OperStatus != IfOperStatusUp) {
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continue;
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}
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const auto ip_addr = Common::BitCast<struct sockaddr_in>(
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*current_address->FirstUnicastAddress->Address.lpSockaddr)
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.sin_addr;
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ULONG mask = 0;
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if (ConvertLengthToIpv4Mask(current_address->FirstUnicastAddress->OnLinkPrefixLength,
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&mask) != NO_ERROR) {
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LOG_ERROR(Network, "Failed to convert IPv4 prefix length to subnet mask");
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continue;
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}
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struct in_addr gateway = {.S_un{.S_addr{0}}};
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if (current_address->FirstGatewayAddress != nullptr &&
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current_address->FirstGatewayAddress->Address.lpSockaddr != nullptr) {
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gateway = Common::BitCast<struct sockaddr_in>(
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*current_address->FirstGatewayAddress->Address.lpSockaddr)
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.sin_addr;
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}
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result.push_back(NetworkInterface{
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.name{Common::UTF16ToUTF8(std::wstring{current_address->FriendlyName})},
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.ip_address{ip_addr},
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.subnet_mask = in_addr{.S_un{.S_addr{mask}}},
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.gateway = gateway});
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}
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return result;
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} else {
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if (ret != NO_ERROR) {
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LOG_ERROR(Network, "Failed to get network interfaces with GetAdaptersAddresses");
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return {};
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}
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std::vector<NetworkInterface> result;
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for (auto current_address = adapter_addresses.data(); current_address != nullptr;
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current_address = current_address->Next) {
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if (current_address->FirstUnicastAddress == nullptr ||
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current_address->FirstUnicastAddress->Address.lpSockaddr == nullptr) {
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continue;
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}
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if (current_address->OperStatus != IfOperStatusUp) {
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continue;
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}
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const auto ip_addr = Common::BitCast<struct sockaddr_in>(
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*current_address->FirstUnicastAddress->Address.lpSockaddr)
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.sin_addr;
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ULONG mask = 0;
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if (ConvertLengthToIpv4Mask(current_address->FirstUnicastAddress->OnLinkPrefixLength,
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&mask) != NO_ERROR) {
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LOG_ERROR(Network, "Failed to convert IPv4 prefix length to subnet mask");
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continue;
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}
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struct in_addr gateway = {.S_un{.S_addr{0}}};
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if (current_address->FirstGatewayAddress != nullptr &&
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current_address->FirstGatewayAddress->Address.lpSockaddr != nullptr) {
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gateway = Common::BitCast<struct sockaddr_in>(
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*current_address->FirstGatewayAddress->Address.lpSockaddr)
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.sin_addr;
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}
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result.emplace_back(NetworkInterface{
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.name{Common::UTF16ToUTF8(std::wstring{current_address->FriendlyName})},
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.ip_address{ip_addr},
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.subnet_mask = in_addr{.S_un{.S_addr{mask}}},
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.gateway = gateway});
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}
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return result;
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}
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#else
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std::vector<NetworkInterface> GetAvailableNetworkInterfaces() {
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std::vector<NetworkInterface> result;
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struct ifaddrs* ifaddr = nullptr;
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if (getifaddrs(&ifaddr) != 0) {
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LOG_ERROR(Network, "Failed to get network interfaces with getifaddrs: {}",
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std::strerror(errno));
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return result;
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return {};
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}
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std::vector<NetworkInterface> result;
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for (auto ifa = ifaddr; ifa != nullptr; ifa = ifa->ifa_next) {
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if (ifa->ifa_addr == nullptr || ifa->ifa_netmask == nullptr) {
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continue;
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@ -117,55 +117,62 @@ std::vector<NetworkInterface> GetAvailableNetworkInterfaces() {
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continue;
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}
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std::uint32_t gateway{0};
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u32 gateway{};
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std::ifstream file{"/proc/net/route"};
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if (file.is_open()) {
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// ignore header
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file.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
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bool gateway_found = false;
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for (std::string line; std::getline(file, line);) {
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std::istringstream iss{line};
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std::string iface_name{};
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iss >> iface_name;
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if (iface_name != ifa->ifa_name) {
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continue;
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}
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iss >> std::hex;
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std::uint32_t dest{0};
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iss >> dest;
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if (dest != 0) {
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// not the default route
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continue;
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}
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iss >> gateway;
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std::uint16_t flags{0};
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iss >> flags;
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// flag RTF_GATEWAY (defined in <linux/route.h>)
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if ((flags & 0x2) == 0) {
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continue;
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}
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gateway_found = true;
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break;
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}
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if (!gateway_found) {
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gateway = 0;
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}
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} else {
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if (!file.is_open()) {
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LOG_ERROR(Network, "Failed to open \"/proc/net/route\"");
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result.emplace_back(NetworkInterface{
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.name{ifa->ifa_name},
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.ip_address{Common::BitCast<struct sockaddr_in>(*ifa->ifa_addr).sin_addr},
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.subnet_mask{Common::BitCast<struct sockaddr_in>(*ifa->ifa_netmask).sin_addr},
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.gateway{in_addr{.s_addr = gateway}}});
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continue;
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}
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result.push_back(NetworkInterface{
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// ignore header
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file.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
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bool gateway_found = false;
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for (std::string line; std::getline(file, line);) {
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std::istringstream iss{line};
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std::string iface_name;
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iss >> iface_name;
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if (iface_name != ifa->ifa_name) {
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continue;
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}
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iss >> std::hex;
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u32 dest{};
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iss >> dest;
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if (dest != 0) {
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// not the default route
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continue;
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}
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iss >> gateway;
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u16 flags{};
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iss >> flags;
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// flag RTF_GATEWAY (defined in <linux/route.h>)
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if ((flags & 0x2) == 0) {
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continue;
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}
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gateway_found = true;
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break;
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}
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if (!gateway_found) {
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gateway = 0;
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}
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result.emplace_back(NetworkInterface{
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.name{ifa->ifa_name},
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.ip_address{Common::BitCast<struct sockaddr_in>(*ifa->ifa_addr).sin_addr},
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.subnet_mask{Common::BitCast<struct sockaddr_in>(*ifa->ifa_netmask).sin_addr},
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