iphlpapi: Partially fill Ipv4 / Ipv6 metric in GetAdaptersAddresses().

CW-Bug-Id: #23640

Author: Paul Gofman

dlls/iphlpapi/iphlpapi_main.c

@@ -993,6 +993,7 @@ static DWORD gateway_and_prefix_addresses_alloc( IP_ADAPTER_ADDRESSES *aa, ULONG
 {
     struct nsi_ipv4_forward_key *key4;
     struct nsi_ipv6_forward_key *key6;
+    struct nsi_ip_forward_rw *rw;
     IP_ADAPTER_GATEWAY_ADDRESS *gw, **gw_next;
     IP_ADAPTER_PREFIX *prefix, **prefix_next;
     DWORD err, count, i, prefix_len, key_size = (family == AF_INET) ? sizeof(*key4) : sizeof(*key6);
@@ -1002,11 +1003,14 @@ static DWORD gateway_and_prefix_addresses_alloc( IP_ADAPTER_ADDRESSES *aa, ULONG
     void *key;
 
     err = NsiAllocateAndGetTable( 1, ip_module_id( family ), NSI_IP_FORWARD_TABLE, &key, key_size,
-                                  NULL, 0, NULL, 0, NULL, 0, &count, 0 );
+                                  (void **)&rw, sizeof(*rw), NULL, 0, NULL, 0, &count, 0 );
     if (err) return err;
 
     while (aa)
     {
+        if (family == AF_INET) aa->Ipv4Metric = ~0u;
+        else                   aa->Ipv6Metric = ~0u;
+
         for (gw_next = &aa->FirstGatewayAddress; *gw_next; gw_next = &(*gw_next)->Next)
             ;
         for (prefix_next = &aa->FirstPrefix; *prefix_next; prefix_next = &(*prefix_next)->Next)
@@ -1019,6 +1023,12 @@ static DWORD gateway_and_prefix_addresses_alloc( IP_ADAPTER_ADDRESSES *aa, ULONG
             luid = (family == AF_INET) ? &key4->luid : &key6->luid;
             if (luid->Value != aa->Luid.Value) continue;
 
+            if (rw[i].metric)
+            {
+                if (family == AF_INET) aa->Ipv4Metric = min( aa->Ipv4Metric, rw[i].metric );
+                else                   aa->Ipv6Metric = min( aa->Ipv6Metric, rw[i].metric );
+            }
+
             if (flags & GAA_FLAG_INCLUDE_ALL_GATEWAYS)
             {
                 memset( &sockaddr, 0, sizeof(sockaddr) );
@@ -1103,7 +1113,7 @@ static DWORD gateway_and_prefix_addresses_alloc( IP_ADAPTER_ADDRESSES *aa, ULONG
     }
 
 err:
-    NsiFreeTable( key, NULL, NULL, NULL );
+    NsiFreeTable( key, rw, NULL, NULL );
     return err;
 }
 
@@ -1269,11 +1279,8 @@ static DWORD adapters_addresses_alloc( ULONG family, ULONG flags, IP_ADAPTER_ADD
         if (err) goto err;
     }
 
-    if (flags & (GAA_FLAG_INCLUDE_ALL_GATEWAYS | GAA_FLAG_INCLUDE_PREFIX))
-    {
-        err = call_families( gateway_and_prefix_addresses_alloc, aa, family, flags );
-        if (err) goto err;
-    }
+    err = call_families( gateway_and_prefix_addresses_alloc, aa, family, flags );
+    if (err) goto err;
 
     err = dns_info_alloc( aa, family, flags );
     if (err) goto err;