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beware of link_ntoa_r()

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lizzie 2026-02-28 20:13:51 +00:00 • committed by crueter
parent ae1192e3c5
commit b191e1023c
1 changed files with 5 additions and 1 deletions
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6
src/core/internal_network/network_interface.cpp
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@ -205,11 +205,15 @@ std::vector<Network::NetworkInterface> GetAvailableNetworkInterfaces() {
if (msglen == 0 || msglen < SA_SIZE(sa))
break;
if (i == RTA_NETMASK && sa->sa_family == AF_LINK) {
size_t namelen = 0;
struct sockaddr_dl const* sdl = reinterpret_cast<struct sockaddr_dl const*>(sa);
#if defined(__APPLE__) || (defined(__FreeBSD__) && __FreeBSD__ < 15)
iface.name = std::string{::link_ntoa(sdl)};
#else
size_t namelen = 0;
::link_ntoa_r(sdl, nullptr, &namelen);
iface.name = std::string(namelen, ' ');
::link_ntoa_r(sdl, iface.name.data(), &namelen);
#endif
std::memcpy(&iface.ip_address, sa, sizeof(struct sockaddr_in));
}
msglen -= SA_SIZE(sa);