added initial 802.15.4 and IPHC/hc06 analyzer
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joxe
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588d0374fa
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3 changed files with 221 additions and 0 deletions
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package se.sics.cooja.plugins.analyzers;
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import se.sics.cooja.util.StringUtils;
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public class IEEE802154Analyzer extends PacketAnalyzer {
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/* TODO: fix this to be correct */
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public static final int NO_ADDRESS = 0;
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public static final int RSV_ADDRESS = 1;
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public static final int SHORT_ADDRESS = 2;
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public static final int LONG_ADDRESS = 3;
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public static final int BEACONFRAME = 0x00;
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public static final int DATAFRAME = 0x01;
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public static final int ACKFRAME = 0x02;
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public static final int CMDFRAME = 0x03;
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private static final byte[] BROADCAST_ADDR = {(byte)0xff, (byte)0xff};
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private static final String[] typeS = {"-", "D", "A"};
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private static final String[] typeVerbose = {"Beacon", "Data", "Ack"};
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private int defaultAddressMode = LONG_ADDRESS;
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private byte seqNo = 0;
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private int myPanID = 0xabcd;
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public boolean matchPacket(Packet packet) {
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return packet.level == MAC_LEVEL;
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}
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/* we need better model of this later... */
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public boolean matchPacket(byte[] packet, int level) {
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return false;
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}
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/* this protocol always have network level packets as payload */
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public int nextLevel(byte[] packet, int level) {
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return NETWORK_LEVEL;
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}
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/* create a 802.15.4 packet of the bytes and "dispatch" to the
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* next handler
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*/
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public void analyzePacket(Packet packet, StringBuffer brief, StringBuffer verbose) {
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int pos = packet.pos;
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int type = packet.data[pos + 0] & 7;
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int security = (packet.data[pos + 0] >> 3) & 1;
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int pending = (packet.data[pos + 0] >> 4) & 1;
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int ackRequired = (packet.data[pos + 0] >> 5) & 1;
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int panCompression = (packet.data[pos + 0]>> 6) & 1;
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int destAddrMode = (packet.data[pos + 1] >> 2) & 3;
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int frameVersion = (packet.data[pos + 1] >> 4) & 3;
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int srcAddrMode = (packet.data[pos + 1] >> 6) & 3;
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int seqNumber = packet.data[pos + 2];
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int destPanID = 0;
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int srcPanID = 0;
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byte[] sourceAddress = null;
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byte[] destAddress = null;
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pos += 3;
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if (destAddrMode > 0) {
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destPanID = (packet.data[pos] & 0xff) + ((packet.data[pos + 1] & 0xff) << 8);
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pos += 2;
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if (destAddrMode == SHORT_ADDRESS) {
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destAddress = new byte[2];
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destAddress[1] = packet.data[pos];
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destAddress[0] = packet.data[pos + 1];
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pos += 2;
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} else if (destAddrMode == LONG_ADDRESS) {
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destAddress = new byte[8];
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for (int i = 0; i < 8; i++) {
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destAddress[i] = packet.data[pos + 7 - i];
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}
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pos += 8;
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}
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}
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if (srcAddrMode > 0) {
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if (panCompression == 0){
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srcPanID = (packet.data[pos] & 0xff) + ((packet.data[pos + 1] & 0xff) << 8);
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pos += 2;
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} else {
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srcPanID = destPanID;
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}
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if (srcAddrMode == SHORT_ADDRESS) {
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sourceAddress = new byte[2];
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sourceAddress[1] = packet.data[pos];
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sourceAddress[0] = packet.data[pos + 1];
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pos += 2;
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} else if (srcAddrMode == LONG_ADDRESS) {
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sourceAddress = new byte[8];
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for (int i = 0; i < 8; i++) {
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sourceAddress[i] = packet.data[pos + 7 - i];
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}
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pos += 8;
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}
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}
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int payloadLen = packet.data.length - pos;
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brief.append("15.4 ");
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brief.append(typeS[type]).append(' ');
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printAddress(brief, srcAddrMode, sourceAddress);
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brief.append(" ");
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printAddress(brief, destAddrMode, destAddress);
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verbose.append("<html><b>IEEE 802.15.4</b><br>from ");
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printAddress(verbose, srcAddrMode, sourceAddress);
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verbose.append(" to ");
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printAddress(verbose, destAddrMode, destAddress);
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verbose.append("<br>FrameType: : " + typeVerbose[type]);
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verbose.append("<br>Payload len: " + payloadLen);
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verbose.append("<br>");
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/* update packet */
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packet.pos = pos;
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packet.level = NETWORK_LEVEL;
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}
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private void printAddress(StringBuffer sb, int type, byte[] addr) {
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if (type == SHORT_ADDRESS) {
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sb.append(StringUtils.toHex(addr));
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} else if (type == LONG_ADDRESS) {
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sb.append(StringUtils.toHex(addr[0]) + StringUtils.toHex(addr[1]) + ":" +
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StringUtils.toHex(addr[2]) + StringUtils.toHex(addr[3]) + ":" +
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StringUtils.toHex(addr[4]) + StringUtils.toHex(addr[5]) + ":" +
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StringUtils.toHex(addr[6]) + StringUtils.toHex(addr[7]));
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}
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}
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}
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@ -0,0 +1,51 @@
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package se.sics.cooja.plugins.analyzers;
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import se.sics.cooja.util.StringUtils;
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public class IPHCPacketAnalyzer extends PacketAnalyzer {
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private static final int IPHC_DISPATCH = 0x60;
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public boolean matchPacket(Packet packet) {
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return (packet.get(0) & 0xe0) == IPHC_DISPATCH;
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}
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public void analyzePacket(Packet packet, StringBuffer brief,
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StringBuffer verbose) {
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int tf = (packet.get(0) >> 3) & 0x03;
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int nh = (packet.get(0) >> 2) & 0x01;
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int hlim = (packet.get(0) & 0x03);
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int cid = (packet.get(1) >> 7) & 0x01;
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int sac = (packet.get(1) >> 6) & 0x01;
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int sam = (packet.get(1) >> 4) & 0x03;
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int m = (packet.get(1) >> 3) & 0x01;
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int dac = (packet.get(1) >> 2) & 0x01;
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int dam = packet.get(1) & 0x03;
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brief.append("iphc tf=" + tf + (nh == 1 ? " nh" : "") + " hl=" + hlim + (cid == 1 ? " cid " : ""));
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brief.append((sac == 1 ? " sac" : "") + " sam=" + sam + (m == 1 ? " M" : "") +
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(dac == 1 ? " dac" : " -") + " dam=" + dam);
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if (cid == 1) {
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brief.append(" sci=" + (packet.get(2) >> 4) + " dci=" + (packet.get(2) & 0x0f));
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}
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/* need to decompress while analyzing - add that later... */
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verbose.append("<br><b>IPHC HC-06</b><br>");
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verbose.append("tf = " + tf + " nhc = " + nh + " hlim = " + hlim + " cid = " + cid);
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verbose.append("sac = " + sac + " sam = " + sam + " MCast = " + m + " dac = " + dac +
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" dam = " + dam + "<br>");
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if (cid == 1) {
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verbose.append("Contexts: sci=" + (packet.get(2) >> 4) + " dci=" + (packet.get(2) & 0x0f));
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}
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packet.pos += cid == 1 ? 3 : 2;
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brief.append("|").append(StringUtils.toHex(packet.getPayload(), 4));
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verbose.append("Payload: ").append(StringUtils.toHex(packet.getPayload(), 4));
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packet.pos = packet.data.length;
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packet.level = NETWORK_LEVEL;
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}
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}
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@ -0,0 +1,37 @@
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package se.sics.cooja.plugins.analyzers;
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public abstract class PacketAnalyzer {
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public static final int RADIO_LEVEL = 0;
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public static final int MAC_LEVEL = 1;
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public static final int NETWORK_LEVEL = 2;
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public static class Packet {
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byte[] data;
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int pos;
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int level;
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public Packet(byte[] data, int level) {
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this.level = level;
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this.data = data;
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}
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public boolean hasMoreData() {
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return data.length > pos;
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}
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public byte get(int index) {
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return data[pos + index];
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}
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public byte[] getPayload() {
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byte[] pload = new byte[data.length - pos];
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System.arraycopy(data, pos, pload, 0, pload.length);
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return pload;
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}
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};
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public abstract boolean matchPacket(Packet packet);
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public abstract void analyzePacket(Packet packet, StringBuffer brief, StringBuffer verbose);
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}
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