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fixed RetrieveNetmask for windows (#3338)

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* fixed RetrieveNetmask for windows

* clang..
This commit is contained in:
georgemoralis 2025-07-27 19:14:11 +03:00 committed by GitHub
parent e3fe6e2809
commit df85efde7c
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1 changed files with 30 additions and 20 deletions
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50
src/core/libraries/network/net_util.cpp
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@ -262,33 +262,43 @@ bool NetUtilInternal::RetrieveNetmask() {
auto success = false;
#ifdef _WIN32
std::vector<u8> adapter_addresses(sizeof(IP_ADAPTER_ADDRESSES));
ULONG size_infos = sizeof(IP_ADAPTER_ADDRESSES);
ULONG flags = GAA_FLAG_SKIP_ANYCAST | GAA_FLAG_SKIP_MULTICAST | GAA_FLAG_SKIP_DNS_SERVER;
ULONG family = AF_INET; // Only IPv4
ULONG buffer_size = 15000;
if (GetAdaptersAddresses(AF_INET, 0, NULL,
reinterpret_cast<PIP_ADAPTER_ADDRESSES>(adapter_addresses.data()),
&size_infos) == ERROR_BUFFER_OVERFLOW)
adapter_addresses.resize(size_infos);
std::vector<BYTE> buffer(buffer_size);
auto adapter_addresses = reinterpret_cast<PIP_ADAPTER_ADDRESSES>(buffer.data());
if (GetAdaptersAddresses(AF_INET, 0, NULL,
reinterpret_cast<PIP_ADAPTER_ADDRESSES>(adapter_addresses.data()),
&size_infos) == NO_ERROR &&
size_infos) {
PIP_ADAPTER_ADDRESSES adapter;
for (adapter = reinterpret_cast<PIP_ADAPTER_ADDRESSES>(adapter_addresses.data()); adapter;
adapter = adapter->Next) {
PIP_ADAPTER_UNICAST_ADDRESS unicast = adapter->FirstUnicastAddress;
if (unicast) {
DWORD result = GetAdaptersAddresses(family, flags, nullptr, adapter_addresses, &buffer_size);
if (result == ERROR_BUFFER_OVERFLOW) {
buffer.resize(buffer_size);
adapter_addresses = reinterpret_cast<PIP_ADAPTER_ADDRESSES>(buffer.data());
result = GetAdaptersAddresses(family, flags, nullptr, adapter_addresses, &buffer_size);
}
if (result != NO_ERROR)
return false;
for (auto adapter = adapter_addresses; adapter != nullptr; adapter = adapter->Next) {
// Skip loopback and down interfaces
if (adapter->IfType == IF_TYPE_SOFTWARE_LOOPBACK || adapter->OperStatus != IfOperStatusUp)
continue;
for (auto unicast = adapter->FirstUnicastAddress; unicast != nullptr;
unicast = unicast->Next) {
if (unicast->Address.lpSockaddr->sa_family == AF_INET) {
ULONG prefix_length = unicast->OnLinkPrefixLength;
ULONG mask = prefix_length == 0 ? 0 : 0xFFFFFFFF << (32 - prefix_length);
in_addr addr{};
addr.S_un.S_addr = htonl(mask);
inet_ntop(AF_INET, &addr, netmaskStr, INET_ADDRSTRLEN);
success = true;
in_addr mask_addr{};
mask_addr.S_un.S_addr = htonl(mask);
if (inet_ntop(AF_INET, &mask_addr, netmaskStr, INET_ADDRSTRLEN)) {
success = true;
}
}
}
}
#else
ifaddrs* ifap;