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/*
* Copyright (C) 2018 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 android.net.netlink.StructNlMsgHdr.NLM_F_DUMP;
import static android.net.netlink.StructNlMsgHdr.NLM_F_REQUEST;
import static android.system.OsConstants.AF_INET;
import static android.system.OsConstants.AF_INET6;
import static android.system.OsConstants.IPPROTO_TCP;
import static android.system.OsConstants.IPPROTO_UDP;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
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.InetAddress;
import java.net.InetSocketAddress;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
@RunWith(AndroidJUnit4.class)
@SmallTest
public class InetDiagSocketTest {
// Hexadecimal representation of InetDiagReqV2 request.
private static final String INET_DIAG_REQ_V2_UDP_INET4_HEX =
// struct nlmsghdr
"48000000" + // length = 72
"1400" + // type = SOCK_DIAG_BY_FAMILY
"0103" + // flags = NLM_F_REQUEST | NLM_F_DUMP
"00000000" + // seqno
"00000000" + // pid (0 == kernel)
// struct inet_diag_req_v2
"02" + // family = AF_INET
"11" + // protcol = IPPROTO_UDP
"00" + // idiag_ext
"00" + // pad
"ffffffff" + // idiag_states
// inet_diag_sockid
"a5de" + // idiag_sport = 42462
"b971" + // idiag_dport = 47473
"0a006402000000000000000000000000" + // idiag_src = 10.0.100.2
"08080808000000000000000000000000" + // idiag_dst = 8.8.8.8
"00000000" + // idiag_if
"ffffffffffffffff"; // idiag_cookie = INET_DIAG_NOCOOKIE
private static final byte[] INET_DIAG_REQ_V2_UDP_INET4_BYTES =
HexEncoding.decode(INET_DIAG_REQ_V2_UDP_INET4_HEX.toCharArray(), false);
@Test
public void testInetDiagReqV2UdpInet4() throws Exception {
InetSocketAddress local = new InetSocketAddress(InetAddress.getByName("10.0.100.2"),
42462);
InetSocketAddress remote = new InetSocketAddress(InetAddress.getByName("8.8.8.8"),
47473);
final byte[] msg = InetDiagMessage.InetDiagReqV2(IPPROTO_UDP, local, remote, AF_INET,
(short) (NLM_F_REQUEST | NLM_F_DUMP));
assertArrayEquals(INET_DIAG_REQ_V2_UDP_INET4_BYTES, msg);
}
// Hexadecimal representation of InetDiagReqV2 request.
private static final String INET_DIAG_REQ_V2_TCP_INET6_HEX =
// struct nlmsghdr
"48000000" + // length = 72
"1400" + // type = SOCK_DIAG_BY_FAMILY
"0100" + // flags = NLM_F_REQUEST
"00000000" + // seqno
"00000000" + // pid (0 == kernel)
// struct inet_diag_req_v2
"0a" + // family = AF_INET6
"06" + // protcol = IPPROTO_TCP
"00" + // idiag_ext
"00" + // pad
"ffffffff" + // idiag_states
// inet_diag_sockid
"a5de" + // idiag_sport = 42462
"b971" + // idiag_dport = 47473
"fe8000000000000086c9b2fffe6aed4b" + // idiag_src = fe80::86c9:b2ff:fe6a:ed4b
"08080808000000000000000000000000" + // idiag_dst = 8.8.8.8
"00000000" + // idiag_if
"ffffffffffffffff"; // idiag_cookie = INET_DIAG_NOCOOKIE
private static final byte[] INET_DIAG_REQ_V2_TCP_INET6_BYTES =
HexEncoding.decode(INET_DIAG_REQ_V2_TCP_INET6_HEX.toCharArray(), false);
@Test
public void testInetDiagReqV2TcpInet6() throws Exception {
InetSocketAddress local = new InetSocketAddress(
InetAddress.getByName("fe80::86c9:b2ff:fe6a:ed4b"), 42462);
InetSocketAddress remote = new InetSocketAddress(InetAddress.getByName("8.8.8.8"),
47473);
byte[] msg = InetDiagMessage.InetDiagReqV2(IPPROTO_TCP, local, remote, AF_INET6,
NLM_F_REQUEST);
assertArrayEquals(INET_DIAG_REQ_V2_TCP_INET6_BYTES, msg);
}
// Hexadecimal representation of InetDiagReqV2 request with extension, INET_DIAG_INFO.
private static final String INET_DIAG_REQ_V2_TCP_INET_INET_DIAG_HEX =
// struct nlmsghdr
"48000000" + // length = 72
"1400" + // type = SOCK_DIAG_BY_FAMILY
"0100" + // flags = NLM_F_REQUEST
"00000000" + // seqno
"00000000" + // pid (0 == kernel)
// struct inet_diag_req_v2
"02" + // family = AF_INET
"06" + // protcol = IPPROTO_TCP
"02" + // idiag_ext = INET_DIAG_INFO
"00" + // pad
"ffffffff" + // idiag_states
// inet_diag_sockid
"3039" + // idiag_sport = 12345
"d431" + // idiag_dport = 54321
"01020304000000000000000000000000" + // idiag_src = 1.2.3.4
"08080404000000000000000000000000" + // idiag_dst = 8.8.4.4
"00000000" + // idiag_if
"ffffffffffffffff"; // idiag_cookie = INET_DIAG_NOCOOKIE
private static final byte[] INET_DIAG_REQ_V2_TCP_INET_INET_DIAG_BYTES =
HexEncoding.decode(INET_DIAG_REQ_V2_TCP_INET_INET_DIAG_HEX.toCharArray(), false);
private static final int TCP_ALL_STATES = 0xffffffff;
@Test
public void testInetDiagReqV2TcpInetWithExt() throws Exception {
InetSocketAddress local = new InetSocketAddress(
InetAddress.getByName("1.2.3.4"), 12345);
InetSocketAddress remote = new InetSocketAddress(InetAddress.getByName("8.8.4.4"),
54321);
byte[] msg = InetDiagMessage.InetDiagReqV2(IPPROTO_TCP, local, remote, AF_INET,
NLM_F_REQUEST, 0 /* pad */, 2 /* idiagExt */, TCP_ALL_STATES);
assertArrayEquals(INET_DIAG_REQ_V2_TCP_INET_INET_DIAG_BYTES, msg);
local = new InetSocketAddress(
InetAddress.getByName("fe80::86c9:b2ff:fe6a:ed4b"), 42462);
remote = new InetSocketAddress(InetAddress.getByName("8.8.8.8"),
47473);
msg = InetDiagMessage.InetDiagReqV2(IPPROTO_TCP, local, remote, AF_INET6,
NLM_F_REQUEST, 0 /* pad */, 0 /* idiagExt */, TCP_ALL_STATES);
assertArrayEquals(INET_DIAG_REQ_V2_TCP_INET6_BYTES, msg);
}
// Hexadecimal representation of InetDiagReqV2 request with no socket specified.
private static final String INET_DIAG_REQ_V2_TCP_INET6_NO_ID_SPECIFIED_HEX =
// struct nlmsghdr
"48000000" + // length = 72
"1400" + // type = SOCK_DIAG_BY_FAMILY
"0100" + // flags = NLM_F_REQUEST
"00000000" + // seqno
"00000000" + // pid (0 == kernel)
// struct inet_diag_req_v2
"0a" + // family = AF_INET6
"06" + // protcol = IPPROTO_TCP
"00" + // idiag_ext
"00" + // pad
"ffffffff" + // idiag_states
// inet_diag_sockid
"0000" + // idiag_sport
"0000" + // idiag_dport
"00000000000000000000000000000000" + // idiag_src
"00000000000000000000000000000000" + // idiag_dst
"00000000" + // idiag_if
"0000000000000000"; // idiag_cookie
private static final byte[] INET_DIAG_REQ_V2_TCP_INET6_NO_ID_SPECIFED_BYTES =
HexEncoding.decode(INET_DIAG_REQ_V2_TCP_INET6_NO_ID_SPECIFIED_HEX.toCharArray(), false);
@Test
public void testInetDiagReqV2TcpInet6NoIdSpecified() throws Exception {
InetSocketAddress local = new InetSocketAddress(
InetAddress.getByName("fe80::fe6a:ed4b"), 12345);
InetSocketAddress remote = new InetSocketAddress(InetAddress.getByName("8.8.4.4"),
54321);
// Verify no socket specified if either local or remote socket address is null.
byte[] msgExt = InetDiagMessage.InetDiagReqV2(IPPROTO_TCP, null, null, AF_INET6,
NLM_F_REQUEST, 0 /* pad */, 0 /* idiagExt */, TCP_ALL_STATES);
byte[] msg;
try {
msg = InetDiagMessage.InetDiagReqV2(IPPROTO_TCP, null, remote, AF_INET6,
NLM_F_REQUEST);
fail("Both remote and local should be null, expected UnknownHostException");
} catch (NullPointerException e) {
}
try {
msg = InetDiagMessage.InetDiagReqV2(IPPROTO_TCP, local, null, AF_INET6,
NLM_F_REQUEST, 0 /* pad */, 0 /* idiagExt */, TCP_ALL_STATES);
fail("Both remote and local should be null, expected UnknownHostException");
} catch (NullPointerException e) {
}
msg = InetDiagMessage.InetDiagReqV2(IPPROTO_TCP, null, null, AF_INET6,
NLM_F_REQUEST, 0 /* pad */, 0 /* idiagExt */, TCP_ALL_STATES);
assertArrayEquals(INET_DIAG_REQ_V2_TCP_INET6_NO_ID_SPECIFED_BYTES, msg);
assertArrayEquals(INET_DIAG_REQ_V2_TCP_INET6_NO_ID_SPECIFED_BYTES, msgExt);
}
// Hexadecimal representation of InetDiagReqV2 request.
private static final String INET_DIAG_MSG_HEX =
// struct nlmsghdr
"58000000" + // length = 88
"1400" + // type = SOCK_DIAG_BY_FAMILY
"0200" + // flags = NLM_F_MULTI
"00000000" + // seqno
"f5220000" + // pid (0 == kernel)
// struct inet_diag_msg
"0a" + // family = AF_INET6
"01" + // idiag_state
"00" + // idiag_timer
"00" + // idiag_retrans
// inet_diag_sockid
"a817" + // idiag_sport = 43031
"960f" + // idiag_dport = 38415
"fe8000000000000086c9b2fffe6aed4b" + // idiag_src = fe80::86c9:b2ff:fe6a:ed4b
"00000000000000000000ffff08080808" + // idiag_dst = 8.8.8.8
"00000000" + // idiag_if
"ffffffffffffffff" + // idiag_cookie = INET_DIAG_NOCOOKIE
"00000000" + // idiag_expires
"00000000" + // idiag_rqueue
"00000000" + // idiag_wqueue
"a3270000" + // idiag_uid
"A57E1900"; // idiag_inode
private static final byte[] INET_DIAG_MSG_BYTES =
HexEncoding.decode(INET_DIAG_MSG_HEX.toCharArray(), false);
@Test
public void testParseInetDiagResponse() throws Exception {
final ByteBuffer byteBuffer = ByteBuffer.wrap(INET_DIAG_MSG_BYTES);
byteBuffer.order(ByteOrder.LITTLE_ENDIAN);
final NetlinkMessage msg = NetlinkMessage.parse(byteBuffer);
assertNotNull(msg);
assertTrue(msg instanceof InetDiagMessage);
final InetDiagMessage inetDiagMsg = (InetDiagMessage) msg;
assertEquals(10147, inetDiagMsg.mStructInetDiagMsg.idiag_uid);
final StructNlMsgHdr hdr = inetDiagMsg.getHeader();
assertNotNull(hdr);
assertEquals(NetlinkConstants.SOCK_DIAG_BY_FAMILY, hdr.nlmsg_type);
assertEquals(StructNlMsgHdr.NLM_F_MULTI, hdr.nlmsg_flags);
assertEquals(0, hdr.nlmsg_seq);
assertEquals(8949, hdr.nlmsg_pid);
}
}
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