1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.net.netlink; 18 19 import static android.net.netlink.StructNlMsgHdr.NLM_F_REQUEST; 20 import static android.net.netlink.StructNlMsgHdr.NLM_F_ACK; 21 import static android.net.netlink.StructNlMsgHdr.NLM_F_REPLACE; 22 23 import android.net.netlink.NetlinkConstants; 24 import android.net.netlink.NetlinkErrorMessage; 25 import android.net.netlink.NetlinkMessage; 26 import android.net.netlink.StructNlMsgErr; 27 import android.util.Log; 28 import java.nio.ByteBuffer; 29 import java.nio.ByteOrder; 30 import junit.framework.TestCase; 31 import libcore.util.HexEncoding; 32 33 34 public class NetlinkErrorMessageTest extends TestCase { 35 private final String TAG = "NetlinkErrorMessageTest"; 36 37 // Hexadecimal representation of packet capture. 38 public static final String NLM_ERROR_OK_HEX = 39 // struct nlmsghdr 40 "24000000" + // length = 36 41 "0200" + // type = 2 (NLMSG_ERROR) 42 "0000" + // flags 43 "26350000" + // seqno 44 "64100000" + // pid = userspace process 45 // error integer 46 "00000000" + // "errno" (0 == OK) 47 // struct nlmsghdr 48 "30000000" + // length (48) of original request 49 "1C00" + // type = 28 (RTM_NEWNEIGH) 50 "0501" + // flags (NLM_F_REQUEST | NLM_F_ACK | NLM_F_REPLACE) 51 "26350000" + // seqno 52 "00000000"; // pid = kernel 53 public static final byte[] NLM_ERROR_OK = 54 HexEncoding.decode(NLM_ERROR_OK_HEX.toCharArray(), false); 55 56 public void testParseNlmErrorOk() { 57 final ByteBuffer byteBuffer = ByteBuffer.wrap(NLM_ERROR_OK); 58 byteBuffer.order(ByteOrder.LITTLE_ENDIAN); // For testing. 59 final NetlinkMessage msg = NetlinkMessage.parse(byteBuffer); 60 assertNotNull(msg); 61 assertTrue(msg instanceof NetlinkErrorMessage); 62 final NetlinkErrorMessage errorMsg = (NetlinkErrorMessage) msg; 63 64 final StructNlMsgHdr hdr = errorMsg.getHeader(); 65 assertNotNull(hdr); 66 assertEquals(36, hdr.nlmsg_len); 67 assertEquals(NetlinkConstants.NLMSG_ERROR, hdr.nlmsg_type); 68 assertEquals(0, hdr.nlmsg_flags); 69 assertEquals(13606, hdr.nlmsg_seq); 70 assertEquals(4196, hdr.nlmsg_pid); 71 72 final StructNlMsgErr err = errorMsg.getNlMsgError(); 73 assertNotNull(err); 74 assertEquals(0, err.error); 75 assertNotNull(err.msg); 76 assertEquals(48, err.msg.nlmsg_len); 77 assertEquals(NetlinkConstants.RTM_NEWNEIGH, err.msg.nlmsg_type); 78 assertEquals((NLM_F_REQUEST | NLM_F_ACK | NLM_F_REPLACE), err.msg.nlmsg_flags); 79 assertEquals(13606, err.msg.nlmsg_seq); 80 assertEquals(0, err.msg.nlmsg_pid); 81 } 82 } 83
