1 files changed, 226 insertions, 0 deletions
diff --git a/tests/unit/java/android/net/IpSecAlgorithmTest.java b/tests/unit/java/android/net/IpSecAlgorithmTest.java
new file mode 100644
index 0000000000..3a8d6004f6
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+++ b/tests/unit/java/android/net/IpSecAlgorithmTest.java
@@ -0,0 +1,226 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import static android.net.IpSecAlgorithm.ALGO_TO_REQUIRED_FIRST_SDK;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.mock;
+
+import android.content.res.Resources;
+import android.os.Build;
+import android.os.Parcel;
+
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import com.android.internal.util.CollectionUtils;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.util.AbstractMap.SimpleEntry;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Map.Entry;
+import java.util.Random;
+import java.util.Set;
+
+/** Unit tests for {@link IpSecAlgorithm}. */
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class IpSecAlgorithmTest {
+    private static final byte[] KEY_MATERIAL;
+
+    private final Resources mMockResources = mock(Resources.class);
+
+    static {
+        KEY_MATERIAL = new byte[128];
+        new Random().nextBytes(KEY_MATERIAL);
+    };
+
+    private static byte[] generateKey(int keyLenInBits) {
+        return Arrays.copyOf(KEY_MATERIAL, keyLenInBits / 8);
+    }
+
+    @Test
+    public void testNoTruncLen() throws Exception {
+        Entry<String, Integer>[] authAndAeadList =
+                new Entry[] {
+                    new SimpleEntry<>(IpSecAlgorithm.AUTH_HMAC_MD5, 128),
+                    new SimpleEntry<>(IpSecAlgorithm.AUTH_HMAC_SHA1, 160),
+                    new SimpleEntry<>(IpSecAlgorithm.AUTH_HMAC_SHA256, 256),
+                    new SimpleEntry<>(IpSecAlgorithm.AUTH_HMAC_SHA384, 384),
+                    new SimpleEntry<>(IpSecAlgorithm.AUTH_HMAC_SHA512, 512),
+                    new SimpleEntry<>(IpSecAlgorithm.AUTH_CRYPT_AES_GCM, 224),
+                };
+
+        // Expect auth and aead algorithms to throw errors if trunclen is omitted.
+        for (Entry<String, Integer> algData : authAndAeadList) {
+            try {
+                new IpSecAlgorithm(
+                        algData.getKey(), Arrays.copyOf(KEY_MATERIAL, algData.getValue() / 8));
+                fail("Expected exception on unprovided auth trunclen");
+            } catch (IllegalArgumentException expected) {
+            }
+        }
+
+        // Ensure crypt works with no truncation length supplied.
+        new IpSecAlgorithm(IpSecAlgorithm.CRYPT_AES_CBC, Arrays.copyOf(KEY_MATERIAL, 256 / 8));
+    }
+
+    private void checkAuthKeyAndTruncLenValidation(String algoName, int keyLen, int truncLen)
+            throws Exception {
+        new IpSecAlgorithm(algoName, generateKey(keyLen), truncLen);
+
+        try {
+            new IpSecAlgorithm(algoName, generateKey(keyLen));
+            fail("Expected exception on unprovided auth trunclen");
+        } catch (IllegalArgumentException pass) {
+        }
+
+        try {
+            new IpSecAlgorithm(algoName, generateKey(keyLen + 8), truncLen);
+            fail("Invalid key length not validated");
+        } catch (IllegalArgumentException pass) {
+        }
+
+        try {
+            new IpSecAlgorithm(algoName, generateKey(keyLen), truncLen + 1);
+            fail("Invalid truncation length not validated");
+        } catch (IllegalArgumentException pass) {
+        }
+    }
+
+    private void checkCryptKeyLenValidation(String algoName, int keyLen) throws Exception {
+        new IpSecAlgorithm(algoName, generateKey(keyLen));
+
+        try {
+            new IpSecAlgorithm(algoName, generateKey(keyLen + 8));
+            fail("Invalid key length not validated");
+        } catch (IllegalArgumentException pass) {
+        }
+    }
+
+    @Test
+    public void testValidationForAlgosAddedInS() throws Exception {
+        if (Build.VERSION.FIRST_SDK_INT <= Build.VERSION_CODES.R) {
+            return;
+        }
+
+        for (int len : new int[] {160, 224, 288}) {
+            checkCryptKeyLenValidation(IpSecAlgorithm.CRYPT_AES_CTR, len);
+        }
+        checkAuthKeyAndTruncLenValidation(IpSecAlgorithm.AUTH_AES_XCBC, 128, 96);
+        checkAuthKeyAndTruncLenValidation(IpSecAlgorithm.AUTH_AES_CMAC, 128, 96);
+        checkAuthKeyAndTruncLenValidation(IpSecAlgorithm.AUTH_CRYPT_CHACHA20_POLY1305, 288, 128);
+    }
+
+    @Test
+    public void testTruncLenValidation() throws Exception {
+        for (int truncLen : new int[] {256, 512}) {
+            new IpSecAlgorithm(
+                    IpSecAlgorithm.AUTH_HMAC_SHA512,
+                    Arrays.copyOf(KEY_MATERIAL, 512 / 8),
+                    truncLen);
+        }
+
+        for (int truncLen : new int[] {255, 513}) {
+            try {
+                new IpSecAlgorithm(
+                        IpSecAlgorithm.AUTH_HMAC_SHA512,
+                        Arrays.copyOf(KEY_MATERIAL, 512 / 8),
+                        truncLen);
+                fail("Invalid truncation length not validated");
+            } catch (IllegalArgumentException pass) {
+            }
+        }
+    }
+
+    @Test
+    public void testLenValidation() throws Exception {
+        for (int len : new int[] {128, 192, 256}) {
+            new IpSecAlgorithm(IpSecAlgorithm.CRYPT_AES_CBC, Arrays.copyOf(KEY_MATERIAL, len / 8));
+        }
+        try {
+            new IpSecAlgorithm(IpSecAlgorithm.CRYPT_AES_CBC, Arrays.copyOf(KEY_MATERIAL, 384 / 8));
+            fail("Invalid key length not validated");
+        } catch (IllegalArgumentException pass) {
+        }
+    }
+
+    @Test
+    public void testAlgoNameValidation() throws Exception {
+        try {
+            new IpSecAlgorithm("rot13", Arrays.copyOf(KEY_MATERIAL, 128 / 8));
+            fail("Invalid algorithm name not validated");
+        } catch (IllegalArgumentException pass) {
+        }
+    }
+
+    @Test
+    public void testParcelUnparcel() throws Exception {
+        IpSecAlgorithm init =
+                new IpSecAlgorithm(
+                        IpSecAlgorithm.AUTH_HMAC_SHA512, Arrays.copyOf(KEY_MATERIAL, 512 / 8), 256);
+
+        Parcel p = Parcel.obtain();
+        p.setDataPosition(0);
+        init.writeToParcel(p, 0);
+
+        p.setDataPosition(0);
+        IpSecAlgorithm fin = IpSecAlgorithm.CREATOR.createFromParcel(p);
+        assertTrue("Parcel/Unparcel failed!", IpSecAlgorithm.equals(init, fin));
+        p.recycle();
+    }
+
+    private static Set<String> getMandatoryAlgos() {
+        return CollectionUtils.filter(
+                ALGO_TO_REQUIRED_FIRST_SDK.keySet(),
+                i -> Build.VERSION.FIRST_SDK_INT >= ALGO_TO_REQUIRED_FIRST_SDK.get(i));
+    }
+
+    private static Set<String> getOptionalAlgos() {
+        return CollectionUtils.filter(
+                ALGO_TO_REQUIRED_FIRST_SDK.keySet(),
+                i -> Build.VERSION.FIRST_SDK_INT < ALGO_TO_REQUIRED_FIRST_SDK.get(i));
+    }
+
+    @Test
+    public void testGetSupportedAlgorithms() throws Exception {
+        assertTrue(IpSecAlgorithm.getSupportedAlgorithms().containsAll(getMandatoryAlgos()));
+        assertTrue(ALGO_TO_REQUIRED_FIRST_SDK.keySet().containsAll(
+                IpSecAlgorithm.getSupportedAlgorithms()));
+    }
+
+    @Test
+    public void testLoadAlgos() throws Exception {
+        final Set<String> optionalAlgoSet = getOptionalAlgos();
+        final String[] optionalAlgos = optionalAlgoSet.toArray(new String[0]);
+
+        doReturn(optionalAlgos).when(mMockResources)
+                .getStringArray(com.android.internal.R.array.config_optionalIpSecAlgorithms);
+
+        final Set<String> enabledAlgos = new HashSet<>(IpSecAlgorithm.loadAlgos(mMockResources));
+        final Set<String> expectedAlgos = ALGO_TO_REQUIRED_FIRST_SDK.keySet();
+
+        assertEquals(expectedAlgos, enabledAlgos);
+    }
+}