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upnp: implement IPv4 host IP lookup for AppleOS 

This adds an additional info line to match the IPv6 implementation.
This commit is contained in:
Felix Paul Kühne 2022-03-28 11:51:35 +02:00 committed by Rémi Denis-Courmont
parent 2c27f5e09e
commit 643fee9b6a
1 changed files with 49 additions and 1 deletions
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50
modules/services_discovery/upnp-wrapper.hpp
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@ -408,12 +408,60 @@ inline char *getPreferedAdapter()
#endif
#else
inline char *getIpv4ForMulticast()
#ifdef __APPLE__
inline bool necessaryFlagsSetOnInterface(struct ifaddrs *anInterface)
{
unsigned int flags = anInterface->ifa_flags;
if( (flags & IFF_UP) && (flags & IFF_RUNNING) && !(flags & IFF_LOOPBACK) && !(flags & IFF_POINTOPOINT) ) {
return true;
}
return false;
}
static char *getIpv4ForMulticast()
{
struct ifaddrs *listOfInterfaces;
struct ifaddrs *anInterface;
int ret = getifaddrs(&listOfInterfaces);
char *bestIP = NULL;
if (ret != 0) {
return NULL;
}
anInterface = listOfInterfaces;
while (anInterface != NULL) {
if (anInterface->ifa_addr->sa_family == AF_INET) {
bool ret = necessaryFlagsSetOnInterface(anInterface);
if (ret) {
/* ignore sockets connecting to the touchbar on MacBooks */
if (strncmp(anInterface->ifa_name, "bridge", 6) != 0) {
if (bestIP) {
FREENULL(bestIP);
}
bestIP = strdup(inet_ntoa(((struct sockaddr_in *)anInterface->ifa_addr)->sin_addr));
}
}
}
anInterface = anInterface->ifa_next;
}
freeifaddrs(listOfInterfaces);
return bestIP;
}
#else
static char *getIpv4ForMulticast()
{
return NULL;
}
#endif
#endif
#endif /* _WIN32 */
#endif /* UPNP_WRAPPER_H */