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package se.leap.bitmaskclient.eip;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static se.leap.bitmaskclient.base.models.Constants.GATEWAYS;
import static se.leap.bitmaskclient.base.models.Constants.PROVIDER_VPN_CERTIFICATE;
import static se.leap.bitmaskclient.testutils.TestSetupHelper.getProvider;
import android.content.Context;
import android.content.SharedPreferences;
import android.os.Build;
import androidx.annotation.Nullable;
import org.json.JSONException;
import org.json.JSONObject;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Answers;
import org.mockito.Mock;
import org.robolectric.RobolectricTestRunner;
import org.robolectric.annotation.Config;
import java.io.IOException;
import java.util.Arrays;
import java.util.HashSet;
import de.blinkt.openvpn.VpnProfile;
import de.blinkt.openvpn.core.ConfigParser;
import de.blinkt.openvpn.core.connection.Connection;
import de.blinkt.openvpn.core.connection.Obfs4Connection;
import se.leap.bitmaskclient.base.models.Provider;
import se.leap.bitmaskclient.base.utils.PreferenceHelper;
import se.leap.bitmaskclient.testutils.MockSharedPreferences;
@RunWith(RobolectricTestRunner.class)
@Config(sdk = {Build.VERSION_CODES.P})
public class GatewayTest {
@Mock(answer = Answers.RETURNS_DEEP_STUBS)
private Context mockContext;
private SharedPreferences sharedPreferences;
@Before
public void setUp() throws IOException, JSONException {
sharedPreferences = new MockSharedPreferences();
PreferenceHelper preferenceHelper = new PreferenceHelper(sharedPreferences);
}
private Gateway createGatewayFromProvider(int nClosest, @Nullable String eipServiceJsonPath) throws ConfigParser.ConfigParseError, JSONException, IOException {
Provider provider = getProvider(null, null, null, null, null, null, eipServiceJsonPath, null);
JSONObject eipServiceJson = provider.getEipServiceJson();
JSONObject gatewayJson = eipServiceJson.getJSONArray(GATEWAYS).getJSONObject(0);
JSONObject secrets = new JSONObject();
try {
secrets.put(Provider.CA_CERT, provider.getCaCert());
secrets.put(PROVIDER_VPN_CERTIFICATE, provider.getVpnCertificate());
} catch (JSONException e) {
e.printStackTrace();
}
return new Gateway(eipServiceJson, secrets, gatewayJson);
}
@Test
public void testGetProfile_OpenVPN_obfuscationProtocols_ignored_OpenVPNfound() throws ConfigParser.ConfigParseError, JSONException, IOException {
Gateway gateway = createGatewayFromProvider(0, "ptdemo_three_mixed_gateways.json");
VpnProfile profile = gateway.getProfile(Connection.TransportType.OPENVPN, new HashSet<>(Arrays.asList("invalid")));
assertNotNull(profile);
}
@Test
public void testGetProfile_obfs4_obfuscationProtocolsTakenIntoAccount_Obfs4Notfound() throws ConfigParser.ConfigParseError, JSONException, IOException {
Gateway gateway = createGatewayFromProvider(0, "ptdemo_three_mixed_gateways.json");
VpnProfile profile = gateway.getProfile(Connection.TransportType.OBFS4, new HashSet<>(Arrays.asList("invalid")));
assertNull(profile);
}
@Test
public void testGetProfile_obfs4_obfuscationProtocolsTakenIntoAccount_Obfs4found() throws ConfigParser.ConfigParseError, JSONException, IOException {
Gateway gateway = createGatewayFromProvider(0, "ptdemo_three_mixed_gateways.json");
VpnProfile profile = gateway.getProfile(Connection.TransportType.OBFS4, new HashSet<>(Arrays.asList("tcp")));
assertNotNull(profile);
}
@Test
public void testGetProfile_obfs4_obfuscationProtocolsTakenIntoAccount_Obfs4KCPfound() throws ConfigParser.ConfigParseError, JSONException, IOException {
Gateway gateway = createGatewayFromProvider(0, "multiple_pts_per_host_eip-service.json");
VpnProfile profile = gateway.getProfile(Connection.TransportType.OBFS4, new HashSet<>(Arrays.asList("kcp")));
assertNotNull(profile);
}
@Test
public void testGetProfile_obfs4_multipleProfiles_randomlySelected() throws ConfigParser.ConfigParseError, JSONException, IOException {
Gateway gateway = createGatewayFromProvider(0, "multiple_pts_per_host_eip-service.json");
VpnProfile profile1 = gateway.getProfile(Connection.TransportType.OBFS4, new HashSet<>(Arrays.asList("kcp", "tcp")));
assertNotNull(profile1);
assertEquals(1, profile1.mConnections.length);
assertTrue(profile1.mConnections[0] instanceof Obfs4Connection);
String[] transportLayerProtocols = ((Obfs4Connection)profile1.mConnections[0]).getObfs4Options().transport.getProtocols();
boolean profileWithDifferentTransportLayerProtosFound = false;
for (int i = 0; i < 1000; i++) {
VpnProfile otherProfile = gateway.getProfile(Connection.TransportType.OBFS4, new HashSet<>(Arrays.asList("kcp", "tcp")));
String[] otherProtocols = ((Obfs4Connection)otherProfile.mConnections[0]).getObfs4Options().transport.getProtocols();
if (!transportLayerProtocols[0].equals(otherProtocols[0])) {
profileWithDifferentTransportLayerProtosFound = true;
System.out.println(i + 1 + " attempts");
break;
}
}
assertTrue(profileWithDifferentTransportLayerProtosFound);
}
@Test
public void testSupportsTransport() throws ConfigParser.ConfigParseError, JSONException, IOException {
Gateway gateway = createGatewayFromProvider(0, "multiple_pts_per_host_eip-service.json");
assertFalse(gateway.supportsTransport(Connection.TransportType.OBFS4_HOP, null));
assertTrue(gateway.supportsTransport(Connection.TransportType.OBFS4, null));
assertTrue(gateway.supportsTransport(Connection.TransportType.OBFS4, new HashSet<>(Arrays.asList("kcp"))));
assertTrue(gateway.supportsTransport(Connection.TransportType.OBFS4, new HashSet<>(Arrays.asList("tcp"))));
assertTrue(gateway.supportsTransport(Connection.TransportType.OBFS4, new HashSet<>(Arrays.asList("quic"))));
assertFalse(gateway.supportsTransport(Connection.TransportType.OBFS4, new HashSet<>(Arrays.asList("invalid"))));
}
@Test
public void testGetSupportedTransports() throws ConfigParser.ConfigParseError, JSONException, IOException {
Gateway gateway = createGatewayFromProvider(0, "multiple_pts_per_host_eip-service.json");
assertEquals(2, gateway.getSupportedTransports().size());
assertTrue(gateway.getSupportedTransports().contains(Connection.TransportType.OBFS4));
assertTrue(gateway.getSupportedTransports().contains(Connection.TransportType.OPENVPN));
}
@Test
public void testHasProfile() throws ConfigParser.ConfigParseError, JSONException, IOException {
Gateway gateway = createGatewayFromProvider(0, "multiple_pts_per_host_eip-service.json");
VpnProfile profile = gateway.getProfiles().get(0);
String profileString = profile.toJson();
VpnProfile newProfile = VpnProfile.fromJson(profileString);
assertTrue(gateway.hasProfile(newProfile));
newProfile.mGatewayIp = "XXXX";
assertFalse(gateway.hasProfile(newProfile));
VpnProfile newProfile2 = VpnProfile.fromJson(profileString);
newProfile2.mConnections = new Connection[0];
assertFalse(gateway.hasProfile(newProfile2));
}
}
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