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author | Morph <39850852+Morph1984@users.noreply.github.com> | 2021-08-21 16:48:15 +0200 |
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committer | Morph <39850852+Morph1984@users.noreply.github.com> | 2021-08-27 08:10:58 +0200 |
commit | 871e1c63158a122a6739547f0c4481f6319affd3 (patch) | |
tree | d43738d4bc57c09f6b906c7422452b8e146c3c56 /src | |
parent | network_interface: Replace default return value with std::nullopt (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/core/network/network_interface.cpp | 159 |
1 files changed, 83 insertions, 76 deletions
diff --git a/src/core/network/network_interface.cpp b/src/core/network/network_interface.cpp index a8f41c6bc..6811f21b1 100644 --- a/src/core/network/network_interface.cpp +++ b/src/core/network/network_interface.cpp @@ -37,73 +37,73 @@ std::vector<NetworkInterface> GetAvailableNetworkInterfaces() { AF_INET, GAA_FLAG_SKIP_MULTICAST | GAA_FLAG_SKIP_DNS_SERVER | GAA_FLAG_INCLUDE_GATEWAYS, nullptr, adapter_addresses.data(), &buf_size); - if (ret == ERROR_BUFFER_OVERFLOW) { - adapter_addresses.resize((buf_size / sizeof(IP_ADAPTER_ADDRESSES)) + 1); - } else { + if (ret != ERROR_BUFFER_OVERFLOW) { break; } + + adapter_addresses.resize((buf_size / sizeof(IP_ADAPTER_ADDRESSES)) + 1); } - if (ret == NO_ERROR) { - std::vector<NetworkInterface> result; + if (ret != NO_ERROR) { + LOG_ERROR(Network, "Failed to get network interfaces with GetAdaptersAddresses"); + return {}; + } - 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; - } + std::vector<NetworkInterface> result; - if (current_address->OperStatus != IfOperStatusUp) { - continue; - } + 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; + } - const auto ip_addr = Common::BitCast<struct sockaddr_in>( - *current_address->FirstUnicastAddress->Address.lpSockaddr) - .sin_addr; + if (current_address->OperStatus != IfOperStatusUp) { + continue; + } - ULONG mask = 0; - if (ConvertLengthToIpv4Mask(current_address->FirstUnicastAddress->OnLinkPrefixLength, - &mask) != NO_ERROR) { - LOG_ERROR(Network, "Failed to convert IPv4 prefix length to subnet mask"); - continue; - } + const auto ip_addr = Common::BitCast<struct sockaddr_in>( + *current_address->FirstUnicastAddress->Address.lpSockaddr) + .sin_addr; - struct in_addr gateway = {.S_un{.S_addr{0}}}; - if (current_address->FirstGatewayAddress != nullptr && - current_address->FirstGatewayAddress->Address.lpSockaddr != nullptr) { - gateway = Common::BitCast<struct sockaddr_in>( - *current_address->FirstGatewayAddress->Address.lpSockaddr) - .sin_addr; - } + ULONG mask = 0; + if (ConvertLengthToIpv4Mask(current_address->FirstUnicastAddress->OnLinkPrefixLength, + &mask) != NO_ERROR) { + LOG_ERROR(Network, "Failed to convert IPv4 prefix length to subnet mask"); + continue; + } - result.push_back(NetworkInterface{ - .name{Common::UTF16ToUTF8(std::wstring{current_address->FriendlyName})}, - .ip_address{ip_addr}, - .subnet_mask = in_addr{.S_un{.S_addr{mask}}}, - .gateway = gateway}); + struct in_addr gateway = {.S_un{.S_addr{0}}}; + if (current_address->FirstGatewayAddress != nullptr && + current_address->FirstGatewayAddress->Address.lpSockaddr != nullptr) { + gateway = Common::BitCast<struct sockaddr_in>( + *current_address->FirstGatewayAddress->Address.lpSockaddr) + .sin_addr; } - return result; - } else { - LOG_ERROR(Network, "Failed to get network interfaces with GetAdaptersAddresses"); - return {}; + result.emplace_back(NetworkInterface{ + .name{Common::UTF16ToUTF8(std::wstring{current_address->FriendlyName})}, + .ip_address{ip_addr}, + .subnet_mask = in_addr{.S_un{.S_addr{mask}}}, + .gateway = gateway}); } + + return result; } #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; + return {}; } + std::vector<NetworkInterface> result; + for (auto ifa = ifaddr; ifa != nullptr; ifa = ifa->ifa_next) { if (ifa->ifa_addr == nullptr || ifa->ifa_netmask == nullptr) { continue; @@ -117,55 +117,62 @@ std::vector<NetworkInterface> GetAvailableNetworkInterfaces() { continue; } - std::uint32_t gateway{0}; + u32 gateway{}; + std::ifstream file{"/proc/net/route"}; - if (file.is_open()) { + if (!file.is_open()) { + LOG_ERROR(Network, "Failed to open \"/proc/net/route\""); - // ignore header - file.ignore(std::numeric_limits<std::streamsize>::max(), '\n'); + result.emplace_back(NetworkInterface{ + .name{ifa->ifa_name}, + .ip_address{Common::BitCast<struct sockaddr_in>(*ifa->ifa_addr).sin_addr}, + .subnet_mask{Common::BitCast<struct sockaddr_in>(*ifa->ifa_netmask).sin_addr}, + .gateway{in_addr{.s_addr = gateway}}}); + continue; + } - bool gateway_found = false; + // ignore header + file.ignore(std::numeric_limits<std::streamsize>::max(), '\n'); - for (std::string line; std::getline(file, line);) { - std::istringstream iss{line}; + bool gateway_found = false; - std::string iface_name{}; - iss >> iface_name; - if (iface_name != ifa->ifa_name) { - continue; - } + for (std::string line; std::getline(file, line);) { + std::istringstream iss{line}; - iss >> std::hex; + std::string iface_name; + iss >> iface_name; + if (iface_name != ifa->ifa_name) { + continue; + } - std::uint32_t dest{0}; - iss >> dest; - if (dest != 0) { - // not the default route - continue; - } + iss >> std::hex; - iss >> gateway; + u32 dest{}; + iss >> dest; + if (dest != 0) { + // not the default route + continue; + } - std::uint16_t flags{0}; - iss >> flags; + iss >> gateway; - // flag RTF_GATEWAY (defined in <linux/route.h>) - if ((flags & 0x2) == 0) { - continue; - } + u16 flags{}; + iss >> flags; - gateway_found = true; - break; + // flag RTF_GATEWAY (defined in <linux/route.h>) + if ((flags & 0x2) == 0) { + continue; } - if (!gateway_found) { - gateway = 0; - } - } else { - LOG_ERROR(Network, "Failed to open \"/proc/net/route\""); + gateway_found = true; + break; + } + + if (!gateway_found) { + gateway = 0; } - result.push_back(NetworkInterface{ + result.emplace_back(NetworkInterface{ .name{ifa->ifa_name}, .ip_address{Common::BitCast<struct sockaddr_in>(*ifa->ifa_addr).sin_addr}, .subnet_mask{Common::BitCast<struct sockaddr_in>(*ifa->ifa_netmask).sin_addr}, |