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network_interface: Cleanup code

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This commit is contained in:
Morph 2021-08-21 10:48:15 -04:00
parent a32a7dacf4
commit 871e1c6315
1 changed files with 100 additions and 93 deletions
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49
src/core/network/network_interface.cpp
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@ -37,14 +37,18 @@ 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) {
LOG_ERROR(Network, "Failed to get network interfaces with GetAdaptersAddresses");
return {};
}
if (ret == NO_ERROR) {
std::vector<NetworkInterface> result;
for (auto current_address = adapter_addresses.data(); current_address != nullptr;
@ -77,7 +81,7 @@ std::vector<NetworkInterface> GetAvailableNetworkInterfaces() {
.sin_addr;
}
result.push_back(NetworkInterface{
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}}},
@ -85,25 +89,21 @@ std::vector<NetworkInterface> GetAvailableNetworkInterfaces() {
}
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;
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;
@ -117,9 +117,19 @@ 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\"");
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;
}
// ignore header
file.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
@ -129,7 +139,7 @@ std::vector<NetworkInterface> GetAvailableNetworkInterfaces() {
for (std::string line; std::getline(file, line);) {
std::istringstream iss{line};
std::string iface_name{};
std::string iface_name;
iss >> iface_name;
if (iface_name != ifa->ifa_name) {
continue;
@ -137,7 +147,7 @@ std::vector<NetworkInterface> GetAvailableNetworkInterfaces() {
iss >> std::hex;
std::uint32_t dest{0};
u32 dest{};
iss >> dest;
if (dest != 0) {
// not the default route
@ -146,7 +156,7 @@ std::vector<NetworkInterface> GetAvailableNetworkInterfaces() {
iss >> gateway;
std::uint16_t flags{0};
u16 flags{};
iss >> flags;
// flag RTF_GATEWAY (defined in <linux/route.h>)
@ -161,11 +171,8 @@ std::vector<NetworkInterface> GetAvailableNetworkInterfaces() {
if (!gateway_found) {
gateway = 0;
}
} else {
LOG_ERROR(Network, "Failed to open \"/proc/net/route\"");
}
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},