Record VPN underlying network types (a924d42f) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/connectivity/Vpn.java

+16 −7

Original line number	Diff line number	Diff line
		@@ -607,8 +607,9 @@ public class Vpn {
		*
		* <p>This method is only called when {@link collectVpnMetrics} is true.
		*/
		public VpnConnectivityMetrics makeVpnConnectivityMetrics(int userId) {
		return new VpnConnectivityMetrics(userId);
		public VpnConnectivityMetrics makeVpnConnectivityMetrics(int userId,
		ConnectivityManager cm) {
		return new VpnConnectivityMetrics(userId, cm);
		}
		}

		@@ -666,8 +667,8 @@ public class Vpn {
		mPackage = VpnConfig.LEGACY_VPN;
		mOwnerUID = getAppUid(mContext, mPackage, mUserId);
		mIsPackageTargetingAtLeastQ = doesPackageTargetAtLeastQ(mPackage);
		mVpnConnectivityMetrics =
		collectVpnMetrics() ? mDeps.makeVpnConnectivityMetrics(userId) : null;
		mVpnConnectivityMetrics = collectVpnMetrics()
		? mDeps.makeVpnConnectivityMetrics(userId, mConnectivityManager) : null;

		try {
		netService.registerObserver(mObserver);
		@@ -2297,6 +2298,15 @@ public class Vpn {
		}
		}

		private void setUnderlyingNetworksAndMetrics(@NonNull Network[] networks) {
		synchronized (Vpn.this) {
		mConfig.underlyingNetworks = networks;
		if (mVpnConnectivityMetrics != null) {
		mVpnConnectivityMetrics.setUnderlyingNetwork(mConfig.underlyingNetworks);
		}
		}
		}

		/**
		* Updates underlying network set.
		*/
		@@ -3059,7 +3069,7 @@ public class Vpn {
		mConfig.dnsServers.clear();
		mConfig.dnsServers.addAll(dnsAddrStrings);

		mConfig.underlyingNetworks = new Network[] {network};
		setUnderlyingNetworksAndMetrics(new Network[] {network});

		networkAgent = mNetworkAgent;

		@@ -3152,9 +3162,8 @@ public class Vpn {

		final LinkProperties oldLp = makeLinkProperties();

		mConfig.underlyingNetworks = new Network[] {network};
		setUnderlyingNetworksAndMetrics(new Network[] {network});
		setMtu(calculateVpnMtu());

		final LinkProperties newLp = makeLinkProperties();

		// If MTU is < 1280, IPv6 addresses will be removed. If there are no addresses

services/core/java/com/android/server/connectivity/VpnConnectivityMetrics.java

+54 −3

Original line number	Diff line number	Diff line
		@@ -28,24 +28,32 @@ import static android.net.IpSecAlgorithm.AUTH_HMAC_SHA512;
		import static android.net.IpSecAlgorithm.CRYPT_AES_CBC;
		import static android.net.IpSecAlgorithm.CRYPT_AES_CTR;

		import android.annotation.NonNull;
		import android.net.ConnectivityManager;
		import android.net.Network;
		import android.net.NetworkCapabilities;
		import android.net.VpnManager;
		import android.util.Log;
		import android.util.SparseArray;

		import androidx.annotation.NonNull;
		import androidx.annotation.VisibleForTesting;

		import java.util.Arrays;
		import java.util.List;

		/**
		* Class to record the VpnConnectionReported into statsd.
		* Class to record the VpnConnectionReported into statsd, facilitating the logging of independent
		* VPN connection details per user.
		*/
		public class VpnConnectivityMetrics {
		private static final String TAG = VpnConnectivityMetrics.class.getSimpleName();
		public static final int VPN_TYPE_UNKNOWN = 0;
		public static final int VPN_PROFILE_TYPE_UNKNOWN = 0;
		private static final int UNKNOWN_UNDERLYING_NETWORK_TYPE = -1;
		private static final SparseArray<String> sAlgorithms = new SparseArray<>();
		private final int mUserId;
		@NonNull
		private final ConnectivityManager mConnectivityManager;
		private int mVpnType = VPN_TYPE_UNKNOWN;
		private int mVpnProfileType = VPN_PROFILE_TYPE_UNKNOWN;
		private int mMtu = 0;
		@@ -56,6 +64,17 @@ public class VpnConnectivityMetrics {
		* index in {@code sAlgorithms} is considered allowed.
		*/
		private int mAllowedAlgorithms = 0;
		/**
		* An array representing the transport types of the underlying networks for the VPN.
		* Each element in this array corresponds to a specific underlying network.
		* The value of each element is the primary transport type of the network
		* (e.g., {@link NetworkCapabilities#TRANSPORT_WIFI},
		* {@link NetworkCapabilities#TRANSPORT_CELLULAR}).
		* If the transport type of a network cannot be determined, the value will be
		* {@code UNKNOWN_UNDERLYING_NETWORK_TYPE}.
		*/
		@NonNull
		private int[] mUnderlyingNetworkTypes;

		// Static initializer block to populate the sAlgorithms mapping. It associates integer keys
		// (which also serve as bit positions for the mAllowedAlgorithms bitmask) with their
		@@ -74,8 +93,9 @@ public class VpnConnectivityMetrics {
		sAlgorithms.put(10, CRYPT_AES_CTR);
		}

		public VpnConnectivityMetrics(int userId) {
		public VpnConnectivityMetrics(int userId, ConnectivityManager connectivityManager) {
		mUserId = userId;
		mConnectivityManager = connectivityManager;
		}

		/**
		@@ -146,4 +166,35 @@ public class VpnConnectivityMetrics {
		}
		return bitmask;
		}

		/**
		* Sets the transport types of the underlying networks for the VPN.
		* <p>
		* This method processes an array of {@link android.net.Network} objects. For each network,
		* it attempts to retrieve its {@link android.net.NetworkCapabilities} and extracts the
		* primary transport type (e.g., Wi-Fi, cellular). If capabilities cannot be retrieved
		* for a specific network, a predefined {@code UNKNOWN_UNDERLYING_NETWORK_TYPE} is
		* used for that entry.
		*
		* @param networks An array of {@link android.net.Network} objects representing the underlying
		* networks currently in use.
		*/
		public void setUnderlyingNetwork(@NonNull Network[] networks) {
		if (networks.length != 0) {
		int[] types = new int[networks.length];
		for (int i = 0; i < networks.length; i++) {
		final NetworkCapabilities capabilities =
		mConnectivityManager.getNetworkCapabilities(networks[i]);
		if (capabilities != null) {
		// Get the primary transport type of the network.
		types[i] = capabilities.getTransportTypes()[0];
		} else {
		types[i] = UNKNOWN_UNDERLYING_NETWORK_TYPE;
		}
		}
		mUnderlyingNetworkTypes = Arrays.copyOf(types, types.length);
		} else {
		mUnderlyingNetworkTypes = new int[0];
		}
		}
		}

services/tests/VpnTests/java/com/android/server/connectivity/VpnTest.java

+2 −1

Original line number	Diff line number	Diff line
		@@ -3293,7 +3293,8 @@ public class VpnTest extends VpnTestBase {
		}

		@Override
		public VpnConnectivityMetrics makeVpnConnectivityMetrics(int userId) {
		public VpnConnectivityMetrics makeVpnConnectivityMetrics(int userId,
		ConnectivityManager cm) {
		return mVpnConnectivityMetrics;
		}
		}