107 lines
3.7 KiB
Java
107 lines
3.7 KiB
Java
/*
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* Copyright (C) 2015 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 android.net.netlink;
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import static android.net.netlink.NetlinkSocket.DEFAULT_RECV_BUFSIZE;
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import static android.system.OsConstants.NETLINK_ROUTE;
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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.assertTrue;
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import android.net.netlink.NetlinkSocket;
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import android.net.netlink.RtNetlinkNeighborMessage;
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import android.net.netlink.StructNlMsgHdr;
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import android.system.NetlinkSocketAddress;
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import android.system.Os;
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import androidx.test.filters.SmallTest;
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import androidx.test.runner.AndroidJUnit4;
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import libcore.io.IoUtils;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import java.io.FileDescriptor;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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@RunWith(AndroidJUnit4.class)
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@SmallTest
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public class NetlinkSocketTest {
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private final String TAG = "NetlinkSocketTest";
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@Test
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public void testBasicWorkingGetNeighborsQuery() throws Exception {
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final FileDescriptor fd = NetlinkSocket.forProto(NETLINK_ROUTE);
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assertNotNull(fd);
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NetlinkSocket.connectToKernel(fd);
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final NetlinkSocketAddress localAddr = (NetlinkSocketAddress) Os.getsockname(fd);
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assertNotNull(localAddr);
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assertEquals(0, localAddr.getGroupsMask());
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assertTrue(0 != localAddr.getPortId());
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final int TEST_SEQNO = 5;
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final byte[] req = RtNetlinkNeighborMessage.newGetNeighborsRequest(TEST_SEQNO);
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assertNotNull(req);
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final long TIMEOUT = 500;
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assertEquals(req.length, NetlinkSocket.sendMessage(fd, req, 0, req.length, TIMEOUT));
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int neighMessageCount = 0;
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int doneMessageCount = 0;
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while (doneMessageCount == 0) {
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ByteBuffer response = NetlinkSocket.recvMessage(fd, DEFAULT_RECV_BUFSIZE, TIMEOUT);
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assertNotNull(response);
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assertTrue(StructNlMsgHdr.STRUCT_SIZE <= response.limit());
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assertEquals(0, response.position());
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assertEquals(ByteOrder.nativeOrder(), response.order());
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// Verify the messages at least appears minimally reasonable.
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while (response.remaining() > 0) {
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final NetlinkMessage msg = NetlinkMessage.parse(response);
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assertNotNull(msg);
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final StructNlMsgHdr hdr = msg.getHeader();
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assertNotNull(hdr);
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if (hdr.nlmsg_type == NetlinkConstants.NLMSG_DONE) {
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doneMessageCount++;
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continue;
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}
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assertEquals(NetlinkConstants.RTM_NEWNEIGH, hdr.nlmsg_type);
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assertTrue(msg instanceof RtNetlinkNeighborMessage);
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assertTrue((hdr.nlmsg_flags & StructNlMsgHdr.NLM_F_MULTI) != 0);
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assertEquals(TEST_SEQNO, hdr.nlmsg_seq);
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assertEquals(localAddr.getPortId(), hdr.nlmsg_pid);
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neighMessageCount++;
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}
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}
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assertEquals(1, doneMessageCount);
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// TODO: make sure this test passes sanely in airplane mode.
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assertTrue(neighMessageCount > 0);
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IoUtils.closeQuietly(fd);
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}
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}
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