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/*
* 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.netlink;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assume.assumeTrue;
import android.system.OsConstants;
import androidx.test.filters.SmallTest;
import androidx.test.runner.AndroidJUnit4;
import libcore.util.HexEncoding;
import org.junit.Test;
import org.junit.runner.RunWith;
import java.net.Inet4Address;
import java.net.InetAddress;
import java.nio.ByteOrder;
@RunWith(AndroidJUnit4.class)
@SmallTest
public class ConntrackMessageTest {
private static final boolean USING_LE = (ByteOrder.nativeOrder() == ByteOrder.LITTLE_ENDIAN);
// Example 1: TCP (192.168.43.209, 44333) -> (23.211.13.26, 443)
public static final String CT_V4UPDATE_TCP_HEX =
// struct nlmsghdr
"50000000" + // length = 80
"0001" + // type = (1 << 8) | 0
"0501" + // flags
"01000000" + // seqno = 1
"00000000" + // pid = 0
// struct nfgenmsg
"02" + // nfgen_family = AF_INET
"00" + // version = NFNETLINK_V0
"0000" + // res_id
// struct nlattr
"3400" + // nla_len = 52
"0180" + // nla_type = nested CTA_TUPLE_ORIG
// struct nlattr
"1400" + // nla_len = 20
"0180" + // nla_type = nested CTA_TUPLE_IP
"0800 0100 C0A82BD1" + // nla_type=CTA_IP_V4_SRC, ip=192.168.43.209
"0800 0200 17D30D1A" + // nla_type=CTA_IP_V4_DST, ip=23.211.13.26
// struct nlattr
"1C00" + // nla_len = 28
"0280" + // nla_type = nested CTA_TUPLE_PROTO
"0500 0100 06 000000" + // nla_type=CTA_PROTO_NUM, proto=6
"0600 0200 AD2D 0000" + // nla_type=CTA_PROTO_SRC_PORT, port=44333 (big endian)
"0600 0300 01BB 0000" + // nla_type=CTA_PROTO_DST_PORT, port=443 (big endian)
// struct nlattr
"0800" + // nla_len = 8
"0700" + // nla_type = CTA_TIMEOUT
"00069780"; // nla_value = 432000 (big endian)
public static final byte[] CT_V4UPDATE_TCP_BYTES =
HexEncoding.decode(CT_V4UPDATE_TCP_HEX.replaceAll(" ", "").toCharArray(), false);
// Example 2: UDP (100.96.167.146, 37069) -> (216.58.197.10, 443)
public static final String CT_V4UPDATE_UDP_HEX =
// struct nlmsghdr
"50000000" + // length = 80
"0001" + // type = (1 << 8) | 0
"0501" + // flags
"01000000" + // seqno = 1
"00000000" + // pid = 0
// struct nfgenmsg
"02" + // nfgen_family = AF_INET
"00" + // version = NFNETLINK_V0
"0000" + // res_id
// struct nlattr
"3400" + // nla_len = 52
"0180" + // nla_type = nested CTA_TUPLE_ORIG
// struct nlattr
"1400" + // nla_len = 20
"0180" + // nla_type = nested CTA_TUPLE_IP
"0800 0100 6460A792" + // nla_type=CTA_IP_V4_SRC, ip=100.96.167.146
"0800 0200 D83AC50A" + // nla_type=CTA_IP_V4_DST, ip=216.58.197.10
// struct nlattr
"1C00" + // nla_len = 28
"0280" + // nla_type = nested CTA_TUPLE_PROTO
"0500 0100 11 000000" + // nla_type=CTA_PROTO_NUM, proto=17
"0600 0200 90CD 0000" + // nla_type=CTA_PROTO_SRC_PORT, port=37069 (big endian)
"0600 0300 01BB 0000" + // nla_type=CTA_PROTO_DST_PORT, port=443 (big endian)
// struct nlattr
"0800" + // nla_len = 8
"0700" + // nla_type = CTA_TIMEOUT
"000000B4"; // nla_value = 180 (big endian)
public static final byte[] CT_V4UPDATE_UDP_BYTES =
HexEncoding.decode(CT_V4UPDATE_UDP_HEX.replaceAll(" ", "").toCharArray(), false);
@Test
public void testConntrackIPv4TcpTimeoutUpdate() throws Exception {
assumeTrue(USING_LE);
final byte[] tcp = ConntrackMessage.newIPv4TimeoutUpdateRequest(
OsConstants.IPPROTO_TCP,
(Inet4Address) InetAddress.getByName("192.168.43.209"), 44333,
(Inet4Address) InetAddress.getByName("23.211.13.26"), 443,
432000);
assertArrayEquals(CT_V4UPDATE_TCP_BYTES, tcp);
}
@Test
public void testConntrackIPv4UdpTimeoutUpdate() throws Exception {
assumeTrue(USING_LE);
final byte[] udp = ConntrackMessage.newIPv4TimeoutUpdateRequest(
OsConstants.IPPROTO_UDP,
(Inet4Address) InetAddress.getByName("100.96.167.146"), 37069,
(Inet4Address) InetAddress.getByName("216.58.197.10"), 443,
180);
assertArrayEquals(CT_V4UPDATE_UDP_BYTES, udp);
}
}
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