1 files changed, 75 insertions, 0 deletions
diff --git a/app/src/main/java/de/blinkt/openvpn/core/NetworkUtils.java b/app/src/main/java/de/blinkt/openvpn/core/NetworkUtils.java
new file mode 100644
index 00000000..40449118
--- /dev/null
+++ b/app/src/main/java/de/blinkt/openvpn/core/NetworkUtils.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2012-2018 Arne Schwabe
+ * Distributed under the GNU GPL v2 with additional terms. For full terms see the file doc/LICENSE.txt
+ */
+
+package de.blinkt.openvpn.core;
+
+import android.content.Context;
+import android.net.*;
+import android.os.Build;
+import android.text.TextUtils;
+
+import java.net.Inet4Address;
+import java.net.Inet6Address;
+import java.util.Vector;
+
+public class NetworkUtils {
+
+    public static Vector<String> getLocalNetworks(Context c, boolean ipv6) {
+        Vector<String> nets = new Vector<>();
+        ConnectivityManager conn = (ConnectivityManager) c.getSystemService(Context.CONNECTIVITY_SERVICE);
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+            Network[] networks = conn.getAllNetworks();
+            for (Network network : networks) {
+                NetworkInfo ni = conn.getNetworkInfo(network);
+                LinkProperties li = conn.getLinkProperties(network);
+
+                NetworkCapabilities nc = conn.getNetworkCapabilities(network);
+
+                // Skip VPN networks like ourselves
+                if (nc.hasTransport(NetworkCapabilities.TRANSPORT_VPN))
+                    continue;
+
+                // Also skip mobile networks
+                if (nc.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR))
+                    continue;
+
+
+                for (LinkAddress la : li.getLinkAddresses()) {
+                    if ((la.getAddress() instanceof Inet4Address && !ipv6) ||
+                            (la.getAddress() instanceof Inet6Address && ipv6))
+                        nets.add(la.toString());
+                }
+            }
+        } else {
+            // Old Android Version, use native utils via ifconfig instead
+            // Add local network interfaces
+            if (ipv6)
+                return nets;
+
+            String[] localRoutes = NativeUtils.getIfconfig();
+
+            // The format of mLocalRoutes is kind of broken because I don't really like JNI
+            for (int i = 0; i < localRoutes.length; i += 3) {
+                String intf = localRoutes[i];
+                String ipAddr = localRoutes[i + 1];
+                String netMask = localRoutes[i + 2];
+
+                if (intf == null || intf.equals("lo") ||
+                        intf.startsWith("tun") || intf.startsWith("rmnet"))
+                    continue;
+
+                if (ipAddr == null || netMask == null) {
+                    VpnStatus.logError("Local routes are broken?! (Report to author) " + TextUtils.join("|", localRoutes));
+                    continue;
+                }
+                nets.add(ipAddr + "/" + CIDRIP.calculateLenFromMask(netMask));
+
+            }
+
+        }
+        return nets;
+    }
+
+}
+\ No newline at end of file