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Prevent changes to immutable capabilities for carrier wifi

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This change prevents carrier wifi from having changes to the RESTRICTED
network capability, which is an immutable capability.

Bug: 184101137
Test: atest FrameworksVcnTests
Change-Id: I802d36a754d961c9928a2e642e25f1b25b8be12d
This commit is contained in:
Benedict Wong
2021-03-31 11:00:37 -07:00
parent 8124f47d3f
commit f8db8d8c43
2 changed files with 123 additions and 6 deletions
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72
tests/vcn/java/com/android/server/VcnManagementServiceTest.java
View File

@@ -16,6 +16,8 @@
package com.android.server;
import static android.net.ConnectivityManager.NetworkCallback;
import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED;
import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VCN_MANAGED;
import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR;
import static android.net.NetworkCapabilities.TRANSPORT_WIFI;
@@ -55,8 +57,10 @@ import android.content.Context;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.LinkProperties;
import android.net.Network;
import android.net.NetworkCapabilities;
import android.net.NetworkCapabilities.Transport;
import android.net.NetworkRequest;
import android.net.TelephonyNetworkSpecifier;
import android.net.vcn.IVcnStatusCallback;
import android.net.vcn.IVcnUnderlyingNetworkPolicyListener;
@@ -258,6 +262,10 @@ public class VcnManagementServiceTest {
verify(mConnMgr).registerNetworkProvider(any(VcnNetworkProvider.class));
verify(mSubscriptionTracker).register();
verify(mConnMgr)
.registerNetworkCallback(
eq(new NetworkRequest.Builder().clearCapabilities().build()),
any(NetworkCallback.class));
}
@Test
@@ -706,10 +714,8 @@ public class VcnManagementServiceTest {
.checkLocationPermission(eq(TEST_PACKAGE_NAME), any(), eq(TEST_UID), any());
}
private VcnUnderlyingNetworkPolicy startVcnAndGetPolicyForTransport(
int subId, ParcelUuid subGrp, boolean isVcnActive, int transport) {
setupSubscriptionAndStartVcn(subId, subGrp, isVcnActive);
private NetworkCapabilities.Builder getNetworkCapabilitiesBuilderForTransport(
int subId, int transport) {
final NetworkCapabilities.Builder ncBuilder =
new NetworkCapabilities.Builder()
.addCapability(NET_CAPABILITY_NOT_VCN_MANAGED)
@@ -718,7 +724,16 @@ public class VcnManagementServiceTest {
ncBuilder.setSubIds(Collections.singleton(subId));
}
return mVcnMgmtSvc.getUnderlyingNetworkPolicy(ncBuilder.build(), new LinkProperties());
return ncBuilder;
}
private VcnUnderlyingNetworkPolicy startVcnAndGetPolicyForTransport(
int subId, ParcelUuid subGrp, boolean isVcnActive, int transport) {
setupSubscriptionAndStartVcn(subId, subGrp, isVcnActive);
return mVcnMgmtSvc.getUnderlyingNetworkPolicy(
getNetworkCapabilitiesBuilderForTransport(subId, transport).build(),
new LinkProperties());
}
@Test
@@ -780,6 +795,53 @@ public class VcnManagementServiceTest {
true /* isRestricted */);
}
private void setupTrackedCarrierWifiNetwork(NetworkCapabilities caps) {
mVcnMgmtSvc.systemReady();
final ArgumentCaptor<NetworkCallback> captor =
ArgumentCaptor.forClass(NetworkCallback.class);
verify(mConnMgr)
.registerNetworkCallback(
eq(new NetworkRequest.Builder().clearCapabilities().build()),
captor.capture());
captor.getValue().onCapabilitiesChanged(new Network(0), caps);
}
@Test
public void testGetUnderlyingNetworkPolicyVcnWifi_unrestrictingExistingNetworkRequiresRestart()
throws Exception {
final NetworkCapabilities existingNetworkCaps =
getNetworkCapabilitiesBuilderForTransport(TEST_SUBSCRIPTION_ID, TRANSPORT_WIFI)
.removeCapability(NET_CAPABILITY_NOT_RESTRICTED)
.build();
setupTrackedCarrierWifiNetwork(existingNetworkCaps);
// Trigger test without VCN instance alive; expect restart due to change of NOT_RESTRICTED
// immutable capability
final VcnUnderlyingNetworkPolicy policy =
mVcnMgmtSvc.getUnderlyingNetworkPolicy(
getNetworkCapabilitiesBuilderForTransport(
TEST_SUBSCRIPTION_ID, TRANSPORT_WIFI)
.build(),
new LinkProperties());
assertTrue(policy.isTeardownRequested());
}
@Test
public void testGetUnderlyingNetworkPolicyVcnWifi_restrictingExistingNetworkRequiresRestart()
throws Exception {
final NetworkCapabilities existingNetworkCaps =
getNetworkCapabilitiesBuilderForTransport(TEST_SUBSCRIPTION_ID, TRANSPORT_WIFI)
.build();
setupTrackedCarrierWifiNetwork(existingNetworkCaps);
final VcnUnderlyingNetworkPolicy policy =
startVcnAndGetPolicyForTransport(
TEST_SUBSCRIPTION_ID, TEST_UUID_2, false /* isActive */, TRANSPORT_WIFI);
assertTrue(policy.isTeardownRequested());
}
@Test
public void testGetUnderlyingNetworkPolicyNonVcnNetwork() throws Exception {
setupSubscriptionAndStartVcn(TEST_SUBSCRIPTION_ID, TEST_UUID_1, true /* isActive */);