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Implement IP.get_local_interfaces.

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Allow getting interfaces names and assigned names.

On UWP this is not supported, and the function will return one interface
for each local address (with interface name the local address itself).
This commit is contained in:
Fabio Alessandrelli
2019-05-07 10:17:00 +02:00
parent d6f8a43b60
commit b574e476ec
6 changed files with 117 additions and 29 deletions
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78
drivers/unix/ip_unix.cpp
View File

@@ -56,6 +56,7 @@
#endif // MINGW hack
#endif
#else // UNIX
#include <net/if.h>
#include <netdb.h>
#ifdef ANDROID_ENABLED
// We could drop this file once we up our API level to 24,
@@ -77,6 +78,7 @@
static IP_Address _sockaddr2ip(struct sockaddr *p_addr) {
IP_Address ip;
if (p_addr->sa_family == AF_INET) {
struct sockaddr_in *addr = (struct sockaddr_in *)p_addr;
ip.set_ipv4((uint8_t *)&(addr->sin_addr));
@@ -129,24 +131,42 @@ IP_Address IP_Unix::_resolve_hostname(const String &p_hostname, Type p_type) {
#if defined(UWP_ENABLED)
void IP_Unix::get_local_addresses(List<IP_Address> *r_addresses) const {
void IP_Unix::get_local_interfaces(Map<String, Interface_Info> *r_interfaces) const {
using namespace Windows::Networking;
using namespace Windows::Networking::Connectivity;
// Returns addresses, not interfaces.
auto hostnames = NetworkInformation::GetHostNames();
for (int i = 0; i < hostnames->Size; i++) {
if (hostnames->GetAt(i)->Type == HostNameType::Ipv4 || hostnames->GetAt(i)->Type == HostNameType::Ipv6 && hostnames->GetAt(i)->IPInformation != nullptr) {
auto hostname = hostnames->GetAt(i);
r_addresses->push_back(IP_Address(String(hostnames->GetAt(i)->CanonicalName->Data())));
if (hostname->Type != HostNameType::Ipv4 && hostname->Type != HostNameType::Ipv6)
continue;
String name = hostname->RawName->Data();
Map<String, Interface_Info>::Element *E = r_interfaces->find(name);
if (!E) {
Interface_Info info;
info.name = name;
info.name_friendly = hostname->DisplayName->Data();
info.index = 0;
E = r_interfaces->insert(name, info);
ERR_CONTINUE(!E);
}
Interface_Info &info = E->get();
IP_Address ip = IP_Address(hostname->CanonicalName->Data());
info.ip_addresses.push_front(ip);
}
};
}
#else
void IP_Unix::get_local_addresses(List<IP_Address> *r_addresses) const {
void IP_Unix::get_local_interfaces(Map<String, Interface_Info> *r_interfaces) const {
ULONG buf_size = 1024;
IP_ADAPTER_ADDRESSES *addrs;
@@ -173,29 +193,23 @@ void IP_Unix::get_local_addresses(List<IP_Address> *r_addresses) const {
while (adapter != NULL) {
Interface_Info info;
info.name = adapter->AdapterName;
info.name_friendly = adapter->FriendlyName;
info.index = String::num_uint64(adapter->IfIndex);
IP_ADAPTER_UNICAST_ADDRESS *address = adapter->FirstUnicastAddress;
while (address != NULL) {
IP_Address ip;
if (address->Address.lpSockaddr->sa_family == AF_INET) {
SOCKADDR_IN *ipv4 = reinterpret_cast<SOCKADDR_IN *>(address->Address.lpSockaddr);
ip.set_ipv4((uint8_t *)&(ipv4->sin_addr));
r_addresses->push_back(ip);
} else if (address->Address.lpSockaddr->sa_family == AF_INET6) { // ipv6
SOCKADDR_IN6 *ipv6 = reinterpret_cast<SOCKADDR_IN6 *>(address->Address.lpSockaddr);
ip.set_ipv6(ipv6->sin6_addr.s6_addr);
r_addresses->push_back(ip);
};
int family = address->Address.lpSockaddr->sa_family;
if (family != AF_INET && family != AF_INET6)
continue;
info.ip_addresses.push_front(_sockaddr2ip(address->Address.lpSockaddr));
address = address->Next;
};
}
adapter = adapter->Next;
// Only add interface if it has at least one IP
if (info.ip_addresses.size() > 0)
r_interfaces->insert(info.name, info);
};
memfree(addrs);
@@ -205,7 +219,7 @@ void IP_Unix::get_local_addresses(List<IP_Address> *r_addresses) const {
#else // UNIX
void IP_Unix::get_local_addresses(List<IP_Address> *r_addresses) const {
void IP_Unix::get_local_interfaces(Map<String, Interface_Info> *r_interfaces) const {
struct ifaddrs *ifAddrStruct = NULL;
struct ifaddrs *ifa = NULL;
@@ -222,8 +236,18 @@ void IP_Unix::get_local_addresses(List<IP_Address> *r_addresses) const {
if (family != AF_INET && family != AF_INET6)
continue;
IP_Address ip = _sockaddr2ip(ifa->ifa_addr);
r_addresses->push_back(ip);
Map<String, Interface_Info>::Element *E = r_interfaces->find(ifa->ifa_name);
if (!E) {
Interface_Info info;
info.name = ifa->ifa_name;
info.name_friendly = ifa->ifa_name;
info.index = String::num_uint64(if_nametoindex(ifa->ifa_name));
E = r_interfaces->insert(ifa->ifa_name, info);
ERR_CONTINUE(!E);
}
Interface_Info &info = E->get();
info.ip_addresses.push_front(_sockaddr2ip(ifa->ifa_addr));
}
if (ifAddrStruct != NULL) freeifaddrs(ifAddrStruct);