added support for hc06 decompression in radiologger / analyzer
This commit is contained in:
joxe
parent
b9827d2b36
commit
83d203afb5
@ -118,6 +118,9 @@ public class IEEE802154Analyzer extends PacketAnalyzer {
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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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packet.llsender = sourceAddress;
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packet.llreceiver = destAddress;
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}
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private void printAddress(StringBuffer sb, int type, byte[] addr) {
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@ -4,6 +4,60 @@ import se.sics.cooja.util.StringUtils;
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public class IPHCPacketAnalyzer extends PacketAnalyzer {
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public final static int SICSLOWPAN_UDP_PORT_MIN = 0xF0B0;
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public final static int SICSLOWPAN_UDP_PORT_MAX = 0xF0BF; /* F0B0 + 15 */
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public final static int SICSLOWPAN_DISPATCH_IPV6 = 0x41; /* 01000001 = 65 */
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public final static int SICSLOWPAN_DISPATCH_HC1 = 0x42; /* 01000010 = 66 */
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public final static int SICSLOWPAN_DISPATCH_IPHC = 0x60; /* 011xxxxx = ... */
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public final static int SICSLOWPAN_DISPATCH_FRAG1 = 0xc0; /* 1100= 0xxx */
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public final static int SICSLOWPAN_DISPATCH_FRAGN = 0xe0; /* 1110= 0xxx */
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/*
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* Values of fields within the IPHC encoding first byte
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* (C stands for compressed and I for inline)
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*/
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public final static int SICSLOWPAN_IPHC_TC_C = 0x10;
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public final static int SICSLOWPAN_IPHC_FL_C = 0x08;
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public final static int SICSLOWPAN_IPHC_NH_C = 0x04;
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public final static int SICSLOWPAN_IPHC_TTL_1 = 0x01;
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public final static int SICSLOWPAN_IPHC_TTL_64 = 0x02;
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public final static int SICSLOWPAN_IPHC_TTL_255 = 0x03;
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public final static int SICSLOWPAN_IPHC_TTL_I = 0x00;
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/* Values of fields within the IPHC encoding second byte */
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public final static int SICSLOWPAN_IPHC_CID = 0x80;
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public final static int SICSLOWPAN_IPHC_SAC = 0x40;
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public final static int SICSLOWPAN_IPHC_SAM_00 = 0x00;
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public final static int SICSLOWPAN_IPHC_SAM_01 = 0x10;
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public final static int SICSLOWPAN_IPHC_SAM_10 = 0x20;
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public final static int SICSLOWPAN_IPHC_SAM_11 = 0x30;
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public final static int SICSLOWPAN_IPHC_M = 0x08;
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public final static int SICSLOWPAN_IPHC_DAC = 0x04;
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public final static int SICSLOWPAN_IPHC_DAM_00 = 0x00;
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public final static int SICSLOWPAN_IPHC_DAM_01 = 0x01;
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public final static int SICSLOWPAN_IPHC_DAM_10 = 0x02;
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public final static int SICSLOWPAN_IPHC_DAM_11 = 0x03;
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private static final int SICSLOWPAN_NHC_UDP_ID = 0xf8;
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private static final int SICSLOWPAN_NHC_UDP_C = 0xFB;
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private static final int SICSLOWPAN_NHC_UDP_I = 0xF8;
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public final static int PROTO_UDP = 17;
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public final static int PROTO_TCP = 6;
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public final static int PROTO_ICMP = 58;
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public final static byte[] UNSPECIFIED_ADDRESS =
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{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
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private static byte[][] addrContexts = new byte[][] {
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{(byte)0xaa, (byte)0xaa, 0, 0, 0, 0, 0, 0}
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};
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private static final int IPHC_DISPATCH = 0x60;
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public boolean matchPacket(Packet packet) {
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@ -22,6 +76,8 @@ public class IPHCPacketAnalyzer extends PacketAnalyzer {
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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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int sci = 0;
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int dci = 0;
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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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@ -38,14 +94,340 @@ public class IPHCPacketAnalyzer extends PacketAnalyzer {
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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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sci = packet.get(2) >> 4;
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dci = packet.get(2) & 0x0f;
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}
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packet.pos += cid == 1 ? 3 : 2;
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int hc06_ptr = 2 + cid;
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int version = 6;
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int trafficClass = 0;
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int flowLabel = 0;
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int len = 0;
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int proto = 0;
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int ttl = 0;
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byte[] srcAddress = null;
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byte[] destAddress = null;
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int srcPort = 0;
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int destPort = 0;
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/* Traffic class and flow label */
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if((packet.get(0) & SICSLOWPAN_IPHC_FL_C) == 0) {
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/* Flow label are carried inline */
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if((packet.get(0) & SICSLOWPAN_IPHC_TC_C) == 0) {
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/* Traffic class is carried inline */
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flowLabel = packet.getInt(hc06_ptr + 1, 3);
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int tmp = packet.get(hc06_ptr);
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hc06_ptr += 4;
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/* hc06 format of tc is ECN | DSCP , original is DSCP | ECN */
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trafficClass = ((tmp >> 2) & 0x3f) | (tmp << 6) & (0x80 + 0x40);
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/* ECN rolled down two steps + lowest DSCP bits at top two bits */
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} else {
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/* highest flow label bits + ECN bits */
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int tmp = packet.get(hc06_ptr);
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trafficClass = (tmp >> 6) & 0x0f;
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flowLabel = packet.getInt(hc06_ptr + 1, 2);
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hc06_ptr += 3;
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}
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} else {
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/* Version is always 6! */
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/* Version and flow label are compressed */
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if((packet.get(0) & SICSLOWPAN_IPHC_TC_C) == 0) {
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/* Traffic class is inline */
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trafficClass =((packet.get(hc06_ptr) >> 6) & 0x03);
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trafficClass = (packet.get(hc06_ptr) << 2);
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hc06_ptr += 1;
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}
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}
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/* Next Header */
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if((packet.get(0) & SICSLOWPAN_IPHC_NH_C) == 0) {
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/* Next header is carried inline */
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proto = packet.get(hc06_ptr);
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hc06_ptr += 1;
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}
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/* Hop limit */
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switch(packet.get(0) & 0x03) {
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case SICSLOWPAN_IPHC_TTL_1:
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ttl = 1;
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break;
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case SICSLOWPAN_IPHC_TTL_64:
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ttl = 2;
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break;
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case SICSLOWPAN_IPHC_TTL_255:
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ttl = 255;
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break;
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case SICSLOWPAN_IPHC_TTL_I:
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ttl = packet.get(hc06_ptr);
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hc06_ptr += 1;
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break;
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}
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/* context based compression */
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if((packet.get(1) & SICSLOWPAN_IPHC_SAC) > 0) {
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/* Source address */
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byte[] context = null;
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if((packet.get(1) & SICSLOWPAN_IPHC_SAM_11) != SICSLOWPAN_IPHC_SAM_00) {
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context = addrContexts[sci];
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}
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switch(packet.get(1) & SICSLOWPAN_IPHC_SAM_11) {
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case SICSLOWPAN_IPHC_SAM_00:
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/* copy the unspecificed address */
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srcAddress = UNSPECIFIED_ADDRESS;
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break;
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case SICSLOWPAN_IPHC_SAM_01: /* 64 bits */
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/* copy prefix from context */
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srcAddress = new byte[16];
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System.arraycopy(context, 0, srcAddress, 0, 8);
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/* copy IID from packet */
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packet.copy(hc06_ptr, srcAddress, 8, 8);
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hc06_ptr += 8;
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break;
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case SICSLOWPAN_IPHC_SAM_10: /* 16 bits */
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/* unicast address */
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srcAddress = new byte[16];
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System.arraycopy(context, 0, srcAddress, 0, 8);
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/* copy 6 NULL bytes then 2 last bytes of IID */
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packet.copy(hc06_ptr, srcAddress, 14, 2);
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hc06_ptr += 2;
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break;
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case SICSLOWPAN_IPHC_SAM_11: /* 0-bits */
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/* copy prefix from context */
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srcAddress = new byte[16];
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System.arraycopy(context, 0, srcAddress, 0, 8);
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/* infer IID from L2 address */
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System.arraycopy(packet.llsender, 0, srcAddress,
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16 - packet.llsender.length, packet.llsender.length);
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break;
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}
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/* end context based compression */
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} else {
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/* no compression and link local */
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switch(packet.get(1) & SICSLOWPAN_IPHC_SAM_11) {
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case SICSLOWPAN_IPHC_SAM_00: /* 128 bits */
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/* copy whole address from packet */
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srcAddress = new byte[16];
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packet.copy(hc06_ptr, srcAddress, 0, 16);
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hc06_ptr += 16;
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break;
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case SICSLOWPAN_IPHC_SAM_01: /* 64 bits */
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srcAddress = new byte[16];
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srcAddress[0] = (byte) 0xfe;
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srcAddress[1] = (byte) 0x80;
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/* copy IID from packet */
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packet.copy(hc06_ptr, srcAddress, 8, 8);
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hc06_ptr += 8;
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break;
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case SICSLOWPAN_IPHC_SAM_10: /* 16 bits */
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srcAddress = new byte[16];
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srcAddress[0] = (byte) 0xfe;
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srcAddress[1] = (byte) 0x80;
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packet.copy(hc06_ptr, srcAddress, 14, 2);
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hc06_ptr += 2;
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break;
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case SICSLOWPAN_IPHC_SAM_11: /* 0 bits */
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/* setup link-local address */
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srcAddress = new byte[16];
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srcAddress[0] = (byte) 0xfe;
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srcAddress[1] = (byte) 0x80;
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/* infer IID from L2 address */
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System.arraycopy(packet.llsender, 0, srcAddress,
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16 - packet.llsender.length, packet.llsender.length);
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break;
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}
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}
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/* Destination address */
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/* multicast compression */
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if((packet.get(1) & SICSLOWPAN_IPHC_M) != 0) {
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/* context based multicast compression */
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if((packet.get(1) & SICSLOWPAN_IPHC_DAC) != 0) {
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/* TODO: implement this */
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} else {
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/* non-context based multicast compression */
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switch (packet.get(1) & SICSLOWPAN_IPHC_DAM_11) {
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case SICSLOWPAN_IPHC_DAM_00: /* 128 bits */
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/* copy whole address from packet */
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destAddress = new byte[16];
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packet.copy(hc06_ptr, destAddress, 0, 16);
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hc06_ptr += 16;
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break;
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case SICSLOWPAN_IPHC_DAM_01: /* 48 bits FFXX::00XX:XXXX:XXXX */
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destAddress = new byte[16];
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destAddress[0] = (byte) 0xff;
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destAddress[1] = packet.get(hc06_ptr);
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packet.copy(hc06_ptr + 1, destAddress, 11, 5);
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hc06_ptr += 6;
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break;
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case SICSLOWPAN_IPHC_DAM_10: /* 32 bits FFXX::00XX:XXXX */
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destAddress = new byte[16];
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destAddress[0] = (byte) 0xff;
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destAddress[1] = packet.get(hc06_ptr);
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packet.copy(hc06_ptr + 1, destAddress, 13, 3);
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hc06_ptr += 4;
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break;
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case SICSLOWPAN_IPHC_DAM_11: /* 8 bits FF02::00XX */
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destAddress = new byte[16];
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destAddress[0] = (byte) 0xff;
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destAddress[1] = (byte) 0x02;
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destAddress[15] = packet.get(hc06_ptr);
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hc06_ptr++;
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break;
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}
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}
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} else {
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/* no multicast */
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/* Context based */
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if((packet.get(1) & SICSLOWPAN_IPHC_DAC) != 0) {
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byte[] context = addrContexts[dci];
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switch (packet.get(1) & SICSLOWPAN_IPHC_DAM_11) {
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case SICSLOWPAN_IPHC_DAM_01: /* 64 bits */
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destAddress = new byte[16];
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System.arraycopy(context, 0, destAddress, 0, 8);
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/* copy IID from packet */
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packet.copy(hc06_ptr, destAddress, 8, 8);
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hc06_ptr += 8;
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break;
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case SICSLOWPAN_IPHC_DAM_10: /* 16 bits */
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/* unicast address */
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destAddress = new byte[16];
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System.arraycopy(context, 0, destAddress, 0, 8);
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/* copy IID from packet */
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packet.copy(hc06_ptr, destAddress, 14, 2);
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hc06_ptr += 2;
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break;
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case SICSLOWPAN_IPHC_DAM_11: /* 0 bits */
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/* unicast address */
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destAddress = new byte[16];
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System.arraycopy(context, 0, destAddress, 0, 8);
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/* infer IID from L2 address */
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System.arraycopy(packet.llreceiver, 0, destAddress,
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16 - packet.llreceiver.length, packet.llreceiver.length);
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break;
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}
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} else {
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/* not context based => link local M = 0, DAC = 0 - same as SAC */
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switch (packet.get(1) & SICSLOWPAN_IPHC_DAM_11) {
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case SICSLOWPAN_IPHC_DAM_00: /* 128 bits */
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destAddress = new byte[16];
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packet.copy(hc06_ptr, destAddress, 0, 16);
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hc06_ptr += 16;
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break;
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case SICSLOWPAN_IPHC_DAM_01: /* 64 bits */
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destAddress = new byte[16];
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destAddress[0] = (byte) 0xfe;
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destAddress[1] = (byte) 0x80;
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packet.copy(hc06_ptr, destAddress, 8, 8);
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hc06_ptr += 8;
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break;
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case SICSLOWPAN_IPHC_DAM_10: /* 16 bits */
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destAddress = new byte[16];
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destAddress[0] = (byte) 0xfe;
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destAddress[1] = (byte) 0x80;
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packet.copy(hc06_ptr, destAddress, 14, 2);
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hc06_ptr += 2;
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break;
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case SICSLOWPAN_IPHC_DAM_11: /* 0 bits */
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destAddress = new byte[16];
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destAddress[0] = (byte) 0xfe;
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destAddress[1] = (byte) 0x80;
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System.arraycopy(packet.llreceiver, 0, destAddress,
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16 - packet.llreceiver.length, packet.llreceiver.length);
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break;
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}
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}
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}
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/* Next header processing - continued */
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if((packet.get(0) & SICSLOWPAN_IPHC_NH_C) != 0) {
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/* TODO: check if this is correct in hc-06 */
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/* The next header is compressed, NHC is following */
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if((packet.get(hc06_ptr) & 0xFC) == SICSLOWPAN_NHC_UDP_ID) {
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proto = PROTO_UDP;
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switch(packet.get(hc06_ptr)) {
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case (byte) SICSLOWPAN_NHC_UDP_C:
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/* 1 byte for NHC, 1 byte for ports, 2 bytes chksum */
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srcPort = SICSLOWPAN_UDP_PORT_MIN + (packet.get(hc06_ptr + 1) >> 4);
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destPort = SICSLOWPAN_UDP_PORT_MIN + (packet.get(hc06_ptr + 1) & 0x0F);
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// memcpy(&SICSLOWPAN_UDP_BUF->udpchksum, hc06_ptr + 2, 2);
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// PRINTF("IPHC: Uncompressed UDP ports (4): %x, %x\n",
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// SICSLOWPAN_UDP_BUF->srcport, SICSLOWPAN_UDP_BUF->destport);
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hc06_ptr += 4;
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break;
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case (byte) SICSLOWPAN_NHC_UDP_I:
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/* 1 byte for NHC, 4 byte for ports, 2 bytes chksum */
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srcPort = packet.getInt(hc06_ptr + 1, 2);
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destPort = packet.getInt(hc06_ptr + 3, 2);
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// memcpy(&SICSLOWPAN_UDP_BUF->udpchksum, hc06_ptr + 5, 2);
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// PRINTF("IPHC: Uncompressed UDP ports (7): %x, %x\n",
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// SICSLOWPAN_UDP_BUF->srcport, SICSLOWPAN_UDP_BUF->destport);
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hc06_ptr += 7;
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break;
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default:
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// PRINTF("sicslowpan uncompress_hdr: error unsupported UDP compression\n");
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return;
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}
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}
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}
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packet.pos += hc06_ptr;
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// /* IP length field. */
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// if(ip_len == 0) {
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// /* This is not a fragmented packet */
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// SICSLOWPAN_IP_BUF->len[0] = 0;
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// SICSLOWPAN_IP_BUF->len[1] = packetbuf_datalen() - rime_hdr_len + uncomp_hdr_len - UIP_IPH_LEN;
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// } else {
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// /* This is a 1st fragment */
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// SICSLOWPAN_IP_BUF->len[0] = (ip_len - UIP_IPH_LEN) >> 8;
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// SICSLOWPAN_IP_BUF->len[1] = (ip_len - UIP_IPH_LEN) & 0x00FF;
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// }
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// /* length field in UDP header */
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// if(SICSLOWPAN_IP_BUF->proto == UIP_PROTO_UDP) {
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// memcpy(&SICSLOWPAN_UDP_BUF->udplen, ipBuf + len[0], 2);
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// }
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/*--------------------------------------------- */
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// packet.pos += cid == 1 ? 3 : 2;
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String protoStr = "" + proto;
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if (proto == PROTO_ICMP) protoStr = "ICMPv6";
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else if (proto == PROTO_UDP) protoStr = "UDP";
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else if (proto == PROTO_TCP) protoStr = "TCP";
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verbose.append("<br><b>IPv6 Packet: ").append(protoStr).append("</b><br>");
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verbose.append("From: ");
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printAddress(verbose, srcAddress);
|
||||
verbose.append(" to ");
|
||||
printAddress(verbose, destAddress);
|
||||
verbose.append("<br>");
|
||||
|
||||
brief.append("|").append(StringUtils.toHex(packet.getPayload(), 4));
|
||||
verbose.append("Payload: ").append(StringUtils.toHex(packet.getPayload(), 4));
|
||||
verbose.append("Payload:<br><pre>").append(StringUtils.hexDump(packet.getPayload())).
|
||||
append("</pre>");
|
||||
|
||||
packet.pos = packet.data.length;
|
||||
packet.level = NETWORK_LEVEL;
|
||||
|
||||
}
|
||||
|
||||
public static void printAddress(StringBuffer out, byte[] address) {
|
||||
for (int i = 0; i < 16; i+=2) {
|
||||
out.append(StringUtils.toHex((byte) (address[i] & 0xff)) +
|
||||
StringUtils.toHex((byte) (address[i + 1] & 0xff)));
|
||||
if (i < 14) {
|
||||
out.append(":");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
|
||||
@ -11,6 +11,10 @@ public abstract class PacketAnalyzer {
|
||||
int pos;
|
||||
int level;
|
||||
|
||||
/* L2 addresseses */
|
||||
byte[] llsender;
|
||||
byte[] llreceiver;
|
||||
|
||||
public Packet(byte[] data, int level) {
|
||||
this.level = level;
|
||||
this.data = data;
|
||||
@ -24,11 +28,34 @@ public abstract class PacketAnalyzer {
|
||||
return data[pos + index];
|
||||
}
|
||||
|
||||
public int getInt(int index, int size) {
|
||||
int value = 0;
|
||||
for (int i = 0; i < size; i++) {
|
||||
value = (value << 8) + get(index + i);
|
||||
}
|
||||
return value;
|
||||
}
|
||||
|
||||
|
||||
public byte[] getPayload() {
|
||||
byte[] pload = new byte[data.length - pos];
|
||||
System.arraycopy(data, pos, pload, 0, pload.length);
|
||||
return pload;
|
||||
}
|
||||
|
||||
public void copy(int srcpos, byte[] arr, int pos, int len) {
|
||||
for (int i = 0; i < len; i++) {
|
||||
arr[pos + i] = get(srcpos + i);
|
||||
}
|
||||
}
|
||||
|
||||
public byte[] getLLSender() {
|
||||
return llsender;
|
||||
}
|
||||
|
||||
public byte[] getLLReceiver() {
|
||||
return llreceiver;
|
||||
}
|
||||
};
|
||||
|
||||
public abstract boolean matchPacket(Packet packet);
|
||||
|
||||
@ -24,7 +24,7 @@
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* $Id: StringUtils.java,v 1.4 2010/02/23 22:32:57 joxe Exp $
|
||||
* $Id: StringUtils.java,v 1.5 2010/02/25 22:36:08 joxe Exp $
|
||||
*/
|
||||
|
||||
package se.sics.cooja.util;
|
||||
@ -108,7 +108,7 @@ public class StringUtils {
|
||||
}
|
||||
sb.append(" ");
|
||||
for (int i = 0; i < n; i++) {
|
||||
if (data[j + i] > 32) {
|
||||
if (data[j + i] >= 32) {
|
||||
sb.append((char)(data[j + i] & 0xff));
|
||||
} else {
|
||||
sb.append('.');
|
||||
|
||||
Loading…
Reference in New Issue
Block a user