feat(android): add ethernet information (#584)

react-native-netinfo · Mar 18, 2022 · 2b3a8e2 · 2b3a8e2
1 parent 07e9345
commit 2b3a8e2
Showing 1 changed file with 41 additions and 18 deletions.
diff --git a/android/src/main/java/com/reactnativecommunity/netinfo/ConnectivityReceiver.java b/android/src/main/java/com/reactnativecommunity/netinfo/ConnectivityReceiver.java
@@ -21,8 +21,11 @@
 import com.reactnativecommunity.netinfo.types.ConnectionType;
 
 import java.math.BigInteger;
+import java.net.Inet4Address;
 import java.net.InetAddress;
 import java.net.NetworkInterface;
+import java.net.SocketException;
+import java.util.Enumeration;
 import java.util.Locale;
 
 import javax.annotation.Nonnull;
@@ -43,6 +46,24 @@ public abstract class ConnectivityReceiver {
     private boolean mIsInternetReachable = false;
     private Boolean mIsInternetReachableOverride;
 
+    private static String getSubnet(InetAddress inetAddress) throws SocketException {
+        NetworkInterface netAddress = NetworkInterface.getByInetAddress(inetAddress);
+        int mask =
+                0xffffffff
+                        << (32
+                        - netAddress
+                        .getInterfaceAddresses()
+                        .get(1)
+                        .getNetworkPrefixLength());
+        return String.format(
+                Locale.US,
+                "%d.%d.%d.%d",
+                (mask >> 24 & 0xff),
+                (mask >> 16 & 0xff),
+                (mask >> 8 & 0xff),
+                (mask & 0xff));
+    }
+
     ConnectivityReceiver(ReactApplicationContext reactContext) {
         mReactContext = reactContext;
         mConnectivityManager =
@@ -160,6 +181,25 @@ private WritableMap createDetailsMap(@Nonnull String detailsInterface) {
                     details.putString("carrier", carrier);
                 }
                 break;
+            case "ethernet":
+                try {
+                    for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements(); ) {
+                        NetworkInterface netInterface = en.nextElement();
+
+                        for (Enumeration<InetAddress> ea = netInterface.getInetAddresses(); ea.hasMoreElements(); ) {
+                            InetAddress inetAddress = ea.nextElement();
+                            if (!inetAddress.isLoopbackAddress() && inetAddress instanceof Inet4Address) {
+                                String ipAddress = inetAddress.getHostAddress();
+                                details.putString("ipAddress", ipAddress);
+                                details.putString("subnet", getSubnet(inetAddress));
+                                return details;
+                            }
+                        }
+                    }
+                } catch (Exception e) {
+                    e.printStackTrace();
+                }
+                break;
             case "wifi":
                 if (NetInfoUtils.isAccessWifiStatePermissionGranted(getReactContext())) {
                     WifiInfo wifiInfo = mWifiManager.getConnectionInfo();
@@ -224,24 +264,7 @@ private WritableMap createDetailsMap(@Nonnull String detailsInterface) {
                                     BigInteger.valueOf(wifiInfo.getIpAddress()).toByteArray();
                             NetInfoUtils.reverseByteArray(ipAddressByteArray);
                             InetAddress inetAddress = InetAddress.getByAddress(ipAddressByteArray);
-                            NetworkInterface netAddress =
-                                    NetworkInterface.getByInetAddress(inetAddress);
-                            int mask =
-                                    0xffffffff
-                                            << (32
-                                            - netAddress
-                                            .getInterfaceAddresses()
-                                            .get(1)
-                                            .getNetworkPrefixLength());
-                            String subnet =
-                                    String.format(
-                                            Locale.US,
-                                            "%d.%d.%d.%d",
-                                            (mask >> 24 & 0xff),
-                                            (mask >> 16 & 0xff),
-                                            (mask >> 8 & 0xff),
-                                            (mask & 0xff));
-                            details.putString("subnet", subnet);
+                            details.putString("subnet", getSubnet(inetAddress));
                         } catch (Exception e) {
                             // Ignore errors
                         }