8c69bcbb8f
This CL temporarily removes the AppOp restriction that disallows creation of IpSec tunnels due to the lack of the appropriate AppOp in AOSP/master. When the relevant framework merges out to master, this CL should be reverted. Bug: none Test: compilation Change-Id: Ic06c193f85f6bcdd0ead4238825c1add78703cde
607 lines
24 KiB
Java
607 lines
24 KiB
Java
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.server;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertNotNull;
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import static org.junit.Assert.fail;
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import static org.mockito.Matchers.anyInt;
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import static org.mockito.Matchers.anyString;
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import static org.mockito.Matchers.eq;
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import static org.mockito.Mockito.mock;
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import static org.mockito.Mockito.times;
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import static org.mockito.Mockito.verify;
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import static org.mockito.Mockito.when;
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import android.app.AppOpsManager;
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import android.content.Context;
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import android.net.INetd;
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import android.net.IpSecAlgorithm;
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import android.net.IpSecConfig;
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import android.net.IpSecManager;
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import android.net.IpSecSpiResponse;
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import android.net.IpSecTransformResponse;
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import android.net.IpSecTunnelInterfaceResponse;
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import android.net.LinkAddress;
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import android.net.Network;
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import android.net.NetworkUtils;
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import android.os.Binder;
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import android.os.ParcelFileDescriptor;
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import android.test.mock.MockContext;
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import android.support.test.filters.SmallTest;
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import android.system.Os;
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import java.net.Socket;
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import java.util.Arrays;
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import java.util.Collection;
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import org.junit.Before;
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import org.junit.Ignore;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.junit.runners.Parameterized;
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/** Unit tests for {@link IpSecService}. */
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@SmallTest
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@RunWith(Parameterized.class)
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public class IpSecServiceParameterizedTest {
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private static final int TEST_SPI = 0xD1201D;
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private final String mDestinationAddr;
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private final String mSourceAddr;
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private final LinkAddress mLocalInnerAddress;
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@Parameterized.Parameters
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public static Collection ipSecConfigs() {
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return Arrays.asList(
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new Object[][] {
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{"1.2.3.4", "8.8.4.4", "10.0.1.1/24"},
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{"2601::2", "2601::10", "2001:db8::1/64"}
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});
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}
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private static final byte[] AEAD_KEY = {
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
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0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
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0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
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0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
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0x73, 0x61, 0x6C, 0x74
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};
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private static final byte[] CRYPT_KEY = {
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
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0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
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0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
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0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F
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};
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private static final byte[] AUTH_KEY = {
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0x7A, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F,
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0x7A, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F
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};
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AppOpsManager mMockAppOps = mock(AppOpsManager.class);
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MockContext mMockContext = new MockContext() {
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@Override
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public Object getSystemService(String name) {
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switch(name) {
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case Context.APP_OPS_SERVICE:
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return mMockAppOps;
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default:
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return null;
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}
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}
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@Override
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public void enforceCallingOrSelfPermission(String permission, String message) {
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if (permission == android.Manifest.permission.MANAGE_IPSEC_TUNNELS) {
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return;
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}
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throw new SecurityException("Unavailable permission requested");
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}
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};
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INetd mMockNetd;
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IpSecService.IpSecServiceConfiguration mMockIpSecSrvConfig;
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IpSecService mIpSecService;
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Network fakeNetwork = new Network(0xAB);
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private static final IpSecAlgorithm AUTH_ALGO =
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new IpSecAlgorithm(IpSecAlgorithm.AUTH_HMAC_SHA256, AUTH_KEY, AUTH_KEY.length * 4);
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private static final IpSecAlgorithm CRYPT_ALGO =
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new IpSecAlgorithm(IpSecAlgorithm.CRYPT_AES_CBC, CRYPT_KEY);
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private static final IpSecAlgorithm AEAD_ALGO =
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new IpSecAlgorithm(IpSecAlgorithm.AUTH_CRYPT_AES_GCM, AEAD_KEY, 128);
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public IpSecServiceParameterizedTest(
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String sourceAddr, String destAddr, String localInnerAddr) {
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mSourceAddr = sourceAddr;
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mDestinationAddr = destAddr;
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mLocalInnerAddress = new LinkAddress(localInnerAddr);
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}
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@Before
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public void setUp() throws Exception {
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mMockNetd = mock(INetd.class);
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mMockIpSecSrvConfig = mock(IpSecService.IpSecServiceConfiguration.class);
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mIpSecService = new IpSecService(mMockContext, mMockIpSecSrvConfig);
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// Injecting mock netd
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when(mMockIpSecSrvConfig.getNetdInstance()).thenReturn(mMockNetd);
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// A package granted the AppOp for MANAGE_IPSEC_TUNNELS will be MODE_ALLOWED.
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when(mMockAppOps.noteOp(anyInt(), anyInt(), eq("blessedPackage")))
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.thenReturn(AppOpsManager.MODE_ALLOWED);
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// A system package will not be granted the app op, so this should fall back to
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// a permissions check, which should pass.
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when(mMockAppOps.noteOp(anyInt(), anyInt(), eq("systemPackage")))
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.thenReturn(AppOpsManager.MODE_DEFAULT);
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// A mismatch between the package name and the UID will return MODE_IGNORED.
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when(mMockAppOps.noteOp(anyInt(), anyInt(), eq("badPackage")))
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.thenReturn(AppOpsManager.MODE_IGNORED);
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}
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@Test
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public void testIpSecServiceReserveSpi() throws Exception {
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when(mMockNetd.ipSecAllocateSpi(anyInt(), anyString(), eq(mDestinationAddr), eq(TEST_SPI)))
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.thenReturn(TEST_SPI);
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IpSecSpiResponse spiResp =
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mIpSecService.allocateSecurityParameterIndex(
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mDestinationAddr, TEST_SPI, new Binder());
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assertEquals(IpSecManager.Status.OK, spiResp.status);
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assertEquals(TEST_SPI, spiResp.spi);
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}
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@Test
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public void testReleaseSecurityParameterIndex() throws Exception {
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when(mMockNetd.ipSecAllocateSpi(anyInt(), anyString(), eq(mDestinationAddr), eq(TEST_SPI)))
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.thenReturn(TEST_SPI);
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IpSecSpiResponse spiResp =
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mIpSecService.allocateSecurityParameterIndex(
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mDestinationAddr, TEST_SPI, new Binder());
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mIpSecService.releaseSecurityParameterIndex(spiResp.resourceId);
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verify(mMockNetd)
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.ipSecDeleteSecurityAssociation(
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eq(spiResp.resourceId),
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anyString(),
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anyString(),
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eq(TEST_SPI),
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anyInt(),
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anyInt());
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// Verify quota and RefcountedResource objects cleaned up
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IpSecService.UserRecord userRecord =
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mIpSecService.mUserResourceTracker.getUserRecord(Os.getuid());
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assertEquals(0, userRecord.mSpiQuotaTracker.mCurrent);
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try {
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userRecord.mSpiRecords.getRefcountedResourceOrThrow(spiResp.resourceId);
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fail("Expected IllegalArgumentException on attempt to access deleted resource");
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} catch (IllegalArgumentException expected) {
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}
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}
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@Test
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public void testSecurityParameterIndexBinderDeath() throws Exception {
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when(mMockNetd.ipSecAllocateSpi(anyInt(), anyString(), eq(mDestinationAddr), eq(TEST_SPI)))
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.thenReturn(TEST_SPI);
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IpSecSpiResponse spiResp =
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mIpSecService.allocateSecurityParameterIndex(
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mDestinationAddr, TEST_SPI, new Binder());
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IpSecService.UserRecord userRecord =
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mIpSecService.mUserResourceTracker.getUserRecord(Os.getuid());
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IpSecService.RefcountedResource refcountedRecord =
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userRecord.mSpiRecords.getRefcountedResourceOrThrow(spiResp.resourceId);
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refcountedRecord.binderDied();
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verify(mMockNetd)
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.ipSecDeleteSecurityAssociation(
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eq(spiResp.resourceId),
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anyString(),
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anyString(),
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eq(TEST_SPI),
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anyInt(),
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anyInt());
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// Verify quota and RefcountedResource objects cleaned up
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assertEquals(0, userRecord.mSpiQuotaTracker.mCurrent);
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try {
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userRecord.mSpiRecords.getRefcountedResourceOrThrow(spiResp.resourceId);
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fail("Expected IllegalArgumentException on attempt to access deleted resource");
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} catch (IllegalArgumentException expected) {
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}
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}
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private int getNewSpiResourceId(String remoteAddress, int returnSpi) throws Exception {
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when(mMockNetd.ipSecAllocateSpi(anyInt(), anyString(), anyString(), anyInt()))
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.thenReturn(returnSpi);
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IpSecSpiResponse spi =
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mIpSecService.allocateSecurityParameterIndex(
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NetworkUtils.numericToInetAddress(remoteAddress).getHostAddress(),
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IpSecManager.INVALID_SECURITY_PARAMETER_INDEX,
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new Binder());
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return spi.resourceId;
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}
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private void addDefaultSpisAndRemoteAddrToIpSecConfig(IpSecConfig config) throws Exception {
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config.setSpiResourceId(getNewSpiResourceId(mDestinationAddr, TEST_SPI));
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config.setSourceAddress(mSourceAddr);
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config.setDestinationAddress(mDestinationAddr);
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}
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private void addAuthAndCryptToIpSecConfig(IpSecConfig config) throws Exception {
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config.setEncryption(CRYPT_ALGO);
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config.setAuthentication(AUTH_ALGO);
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}
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@Test
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public void testCreateTransform() throws Exception {
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IpSecConfig ipSecConfig = new IpSecConfig();
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addDefaultSpisAndRemoteAddrToIpSecConfig(ipSecConfig);
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addAuthAndCryptToIpSecConfig(ipSecConfig);
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IpSecTransformResponse createTransformResp =
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mIpSecService.createTransform(ipSecConfig, new Binder(), "blessedPackage");
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assertEquals(IpSecManager.Status.OK, createTransformResp.status);
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verify(mMockNetd)
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.ipSecAddSecurityAssociation(
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eq(createTransformResp.resourceId),
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anyInt(),
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anyString(),
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anyString(),
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anyInt(),
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eq(TEST_SPI),
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anyInt(),
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anyInt(),
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eq(IpSecAlgorithm.AUTH_HMAC_SHA256),
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eq(AUTH_KEY),
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anyInt(),
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eq(IpSecAlgorithm.CRYPT_AES_CBC),
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eq(CRYPT_KEY),
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anyInt(),
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eq(""),
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eq(new byte[] {}),
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eq(0),
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anyInt(),
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anyInt(),
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anyInt());
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}
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@Test
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public void testCreateTransformAead() throws Exception {
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IpSecConfig ipSecConfig = new IpSecConfig();
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addDefaultSpisAndRemoteAddrToIpSecConfig(ipSecConfig);
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ipSecConfig.setAuthenticatedEncryption(AEAD_ALGO);
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IpSecTransformResponse createTransformResp =
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mIpSecService.createTransform(ipSecConfig, new Binder(), "blessedPackage");
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assertEquals(IpSecManager.Status.OK, createTransformResp.status);
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verify(mMockNetd)
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.ipSecAddSecurityAssociation(
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eq(createTransformResp.resourceId),
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anyInt(),
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anyString(),
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anyString(),
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anyInt(),
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eq(TEST_SPI),
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anyInt(),
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anyInt(),
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eq(""),
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eq(new byte[] {}),
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eq(0),
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eq(""),
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eq(new byte[] {}),
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eq(0),
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eq(IpSecAlgorithm.AUTH_CRYPT_AES_GCM),
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eq(AEAD_KEY),
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anyInt(),
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anyInt(),
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anyInt(),
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anyInt());
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}
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@Test
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public void testCreateTwoTransformsWithSameSpis() throws Exception {
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IpSecConfig ipSecConfig = new IpSecConfig();
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addDefaultSpisAndRemoteAddrToIpSecConfig(ipSecConfig);
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addAuthAndCryptToIpSecConfig(ipSecConfig);
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IpSecTransformResponse createTransformResp =
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mIpSecService.createTransform(ipSecConfig, new Binder(), "blessedPackage");
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assertEquals(IpSecManager.Status.OK, createTransformResp.status);
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// Attempting to create transform a second time with the same SPIs should throw an error...
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try {
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mIpSecService.createTransform(ipSecConfig, new Binder(), "blessedPackage");
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fail("IpSecService should have thrown an error for reuse of SPI");
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} catch (IllegalStateException expected) {
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}
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// ... even if the transform is deleted
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mIpSecService.deleteTransform(createTransformResp.resourceId);
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try {
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mIpSecService.createTransform(ipSecConfig, new Binder(), "blessedPackage");
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fail("IpSecService should have thrown an error for reuse of SPI");
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} catch (IllegalStateException expected) {
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}
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}
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@Test
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public void testReleaseOwnedSpi() throws Exception {
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IpSecConfig ipSecConfig = new IpSecConfig();
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addDefaultSpisAndRemoteAddrToIpSecConfig(ipSecConfig);
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addAuthAndCryptToIpSecConfig(ipSecConfig);
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IpSecTransformResponse createTransformResp =
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mIpSecService.createTransform(ipSecConfig, new Binder(), "blessedPackage");
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IpSecService.UserRecord userRecord =
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mIpSecService.mUserResourceTracker.getUserRecord(Os.getuid());
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assertEquals(1, userRecord.mSpiQuotaTracker.mCurrent);
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mIpSecService.releaseSecurityParameterIndex(ipSecConfig.getSpiResourceId());
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verify(mMockNetd, times(0))
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.ipSecDeleteSecurityAssociation(
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eq(createTransformResp.resourceId),
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anyString(),
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anyString(),
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eq(TEST_SPI),
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anyInt(),
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anyInt());
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// quota is not released until the SPI is released by the Transform
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assertEquals(1, userRecord.mSpiQuotaTracker.mCurrent);
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}
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@Test
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public void testDeleteTransform() throws Exception {
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IpSecConfig ipSecConfig = new IpSecConfig();
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addDefaultSpisAndRemoteAddrToIpSecConfig(ipSecConfig);
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addAuthAndCryptToIpSecConfig(ipSecConfig);
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IpSecTransformResponse createTransformResp =
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mIpSecService.createTransform(ipSecConfig, new Binder(), "blessedPackage");
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mIpSecService.deleteTransform(createTransformResp.resourceId);
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verify(mMockNetd, times(1))
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.ipSecDeleteSecurityAssociation(
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eq(createTransformResp.resourceId),
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anyString(),
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anyString(),
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eq(TEST_SPI),
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anyInt(),
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anyInt());
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// Verify quota and RefcountedResource objects cleaned up
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IpSecService.UserRecord userRecord =
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mIpSecService.mUserResourceTracker.getUserRecord(Os.getuid());
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assertEquals(0, userRecord.mTransformQuotaTracker.mCurrent);
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assertEquals(1, userRecord.mSpiQuotaTracker.mCurrent);
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mIpSecService.releaseSecurityParameterIndex(ipSecConfig.getSpiResourceId());
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// Verify that ipSecDeleteSa was not called when the SPI was released because the
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// ownedByTransform property should prevent it; (note, the called count is cumulative).
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verify(mMockNetd, times(1))
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.ipSecDeleteSecurityAssociation(
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anyInt(),
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anyString(),
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anyString(),
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anyInt(),
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anyInt(),
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anyInt());
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assertEquals(0, userRecord.mSpiQuotaTracker.mCurrent);
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try {
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userRecord.mTransformRecords.getRefcountedResourceOrThrow(
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createTransformResp.resourceId);
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fail("Expected IllegalArgumentException on attempt to access deleted resource");
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} catch (IllegalArgumentException expected) {
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}
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}
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@Test
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public void testTransportModeTransformBinderDeath() throws Exception {
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IpSecConfig ipSecConfig = new IpSecConfig();
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addDefaultSpisAndRemoteAddrToIpSecConfig(ipSecConfig);
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addAuthAndCryptToIpSecConfig(ipSecConfig);
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IpSecTransformResponse createTransformResp =
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mIpSecService.createTransform(ipSecConfig, new Binder(), "blessedPackage");
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IpSecService.UserRecord userRecord =
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mIpSecService.mUserResourceTracker.getUserRecord(Os.getuid());
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IpSecService.RefcountedResource refcountedRecord =
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userRecord.mTransformRecords.getRefcountedResourceOrThrow(
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createTransformResp.resourceId);
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refcountedRecord.binderDied();
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verify(mMockNetd)
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.ipSecDeleteSecurityAssociation(
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eq(createTransformResp.resourceId),
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anyString(),
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anyString(),
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eq(TEST_SPI),
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anyInt(),
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anyInt());
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// Verify quota and RefcountedResource objects cleaned up
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assertEquals(0, userRecord.mTransformQuotaTracker.mCurrent);
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try {
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userRecord.mTransformRecords.getRefcountedResourceOrThrow(
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createTransformResp.resourceId);
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fail("Expected IllegalArgumentException on attempt to access deleted resource");
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} catch (IllegalArgumentException expected) {
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}
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}
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@Test
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public void testApplyTransportModeTransform() throws Exception {
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IpSecConfig ipSecConfig = new IpSecConfig();
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addDefaultSpisAndRemoteAddrToIpSecConfig(ipSecConfig);
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addAuthAndCryptToIpSecConfig(ipSecConfig);
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IpSecTransformResponse createTransformResp =
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mIpSecService.createTransform(ipSecConfig, new Binder(), "blessedPackage");
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ParcelFileDescriptor pfd = ParcelFileDescriptor.fromSocket(new Socket());
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int resourceId = createTransformResp.resourceId;
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mIpSecService.applyTransportModeTransform(pfd, IpSecManager.DIRECTION_OUT, resourceId);
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verify(mMockNetd)
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.ipSecApplyTransportModeTransform(
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eq(pfd.getFileDescriptor()),
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eq(resourceId),
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eq(IpSecManager.DIRECTION_OUT),
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anyString(),
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anyString(),
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eq(TEST_SPI));
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}
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@Test
|
|
public void testRemoveTransportModeTransform() throws Exception {
|
|
ParcelFileDescriptor pfd = ParcelFileDescriptor.fromSocket(new Socket());
|
|
mIpSecService.removeTransportModeTransforms(pfd);
|
|
|
|
verify(mMockNetd).ipSecRemoveTransportModeTransform(pfd.getFileDescriptor());
|
|
}
|
|
|
|
private IpSecTunnelInterfaceResponse createAndValidateTunnel(
|
|
String localAddr, String remoteAddr, String pkgName) {
|
|
IpSecTunnelInterfaceResponse createTunnelResp =
|
|
mIpSecService.createTunnelInterface(
|
|
mSourceAddr, mDestinationAddr, fakeNetwork, new Binder(), pkgName);
|
|
|
|
assertNotNull(createTunnelResp);
|
|
assertEquals(IpSecManager.Status.OK, createTunnelResp.status);
|
|
return createTunnelResp;
|
|
}
|
|
|
|
@Test
|
|
public void testCreateTunnelInterface() throws Exception {
|
|
IpSecTunnelInterfaceResponse createTunnelResp =
|
|
createAndValidateTunnel(mSourceAddr, mDestinationAddr, "blessedPackage");
|
|
|
|
// Check that we have stored the tracking object, and retrieve it
|
|
IpSecService.UserRecord userRecord =
|
|
mIpSecService.mUserResourceTracker.getUserRecord(Os.getuid());
|
|
IpSecService.RefcountedResource refcountedRecord =
|
|
userRecord.mTunnelInterfaceRecords.getRefcountedResourceOrThrow(
|
|
createTunnelResp.resourceId);
|
|
|
|
assertEquals(1, userRecord.mTunnelQuotaTracker.mCurrent);
|
|
verify(mMockNetd)
|
|
.addVirtualTunnelInterface(
|
|
eq(createTunnelResp.interfaceName),
|
|
eq(mSourceAddr),
|
|
eq(mDestinationAddr),
|
|
anyInt(),
|
|
anyInt());
|
|
}
|
|
|
|
@Test
|
|
public void testDeleteTunnelInterface() throws Exception {
|
|
IpSecTunnelInterfaceResponse createTunnelResp =
|
|
createAndValidateTunnel(mSourceAddr, mDestinationAddr, "blessedPackage");
|
|
|
|
IpSecService.UserRecord userRecord =
|
|
mIpSecService.mUserResourceTracker.getUserRecord(Os.getuid());
|
|
|
|
mIpSecService.deleteTunnelInterface(createTunnelResp.resourceId, "blessedPackage");
|
|
|
|
// Verify quota and RefcountedResource objects cleaned up
|
|
assertEquals(0, userRecord.mTunnelQuotaTracker.mCurrent);
|
|
verify(mMockNetd).removeVirtualTunnelInterface(eq(createTunnelResp.interfaceName));
|
|
try {
|
|
userRecord.mTunnelInterfaceRecords.getRefcountedResourceOrThrow(
|
|
createTunnelResp.resourceId);
|
|
fail("Expected IllegalArgumentException on attempt to access deleted resource");
|
|
} catch (IllegalArgumentException expected) {
|
|
}
|
|
}
|
|
|
|
@Test
|
|
public void testTunnelInterfaceBinderDeath() throws Exception {
|
|
IpSecTunnelInterfaceResponse createTunnelResp =
|
|
createAndValidateTunnel(mSourceAddr, mDestinationAddr, "blessedPackage");
|
|
|
|
IpSecService.UserRecord userRecord =
|
|
mIpSecService.mUserResourceTracker.getUserRecord(Os.getuid());
|
|
IpSecService.RefcountedResource refcountedRecord =
|
|
userRecord.mTunnelInterfaceRecords.getRefcountedResourceOrThrow(
|
|
createTunnelResp.resourceId);
|
|
|
|
refcountedRecord.binderDied();
|
|
|
|
// Verify quota and RefcountedResource objects cleaned up
|
|
assertEquals(0, userRecord.mTunnelQuotaTracker.mCurrent);
|
|
verify(mMockNetd).removeVirtualTunnelInterface(eq(createTunnelResp.interfaceName));
|
|
try {
|
|
userRecord.mTunnelInterfaceRecords.getRefcountedResourceOrThrow(
|
|
createTunnelResp.resourceId);
|
|
fail("Expected IllegalArgumentException on attempt to access deleted resource");
|
|
} catch (IllegalArgumentException expected) {
|
|
}
|
|
}
|
|
|
|
@Test
|
|
public void testAddRemoveAddressFromTunnelInterface() throws Exception {
|
|
for (String pkgName : new String[]{"blessedPackage", "systemPackage"}) {
|
|
IpSecTunnelInterfaceResponse createTunnelResp =
|
|
createAndValidateTunnel(mSourceAddr, mDestinationAddr, pkgName);
|
|
mIpSecService.addAddressToTunnelInterface(
|
|
createTunnelResp.resourceId, mLocalInnerAddress, pkgName);
|
|
verify(mMockNetd, times(1))
|
|
.interfaceAddAddress(
|
|
eq(createTunnelResp.interfaceName),
|
|
eq(mLocalInnerAddress.getAddress().getHostAddress()),
|
|
eq(mLocalInnerAddress.getPrefixLength()));
|
|
mIpSecService.removeAddressFromTunnelInterface(
|
|
createTunnelResp.resourceId, mLocalInnerAddress, pkgName);
|
|
verify(mMockNetd, times(1))
|
|
.interfaceDelAddress(
|
|
eq(createTunnelResp.interfaceName),
|
|
eq(mLocalInnerAddress.getAddress().getHostAddress()),
|
|
eq(mLocalInnerAddress.getPrefixLength()));
|
|
mIpSecService.deleteTunnelInterface(createTunnelResp.resourceId, pkgName);
|
|
}
|
|
}
|
|
|
|
@Ignore
|
|
@Test
|
|
public void testAddTunnelFailsForBadPackageName() throws Exception {
|
|
try {
|
|
IpSecTunnelInterfaceResponse createTunnelResp =
|
|
createAndValidateTunnel(mSourceAddr, mDestinationAddr, "badPackage");
|
|
fail("Expected a SecurityException for badPackage.");
|
|
} catch (SecurityException expected) {
|
|
}
|
|
}
|
|
}
|