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added support for hc06 decompression in radiologger / analyzer

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This commit is contained in:
joxe 2010-02-25 22:36:08 +00:00
parent b9827d2b36
commit 83d203afb5
4 changed files with 420 additions and 8 deletions
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3
tools/cooja/java/se/sics/cooja/plugins/analyzers/IEEE802154Analyzer.java
View file

@ -118,6 +118,9 @@ public class IEEE802154Analyzer extends PacketAnalyzer {
/* update packet */
packet.pos = pos;
packet.level = NETWORK_LEVEL;
packet.llsender = sourceAddress;
packet.llreceiver = destAddress;
}
private void printAddress(StringBuffer sb, int type, byte[] addr) {

394
tools/cooja/java/se/sics/cooja/plugins/analyzers/IPHCPacketAnalyzer.java
View file

@ -4,8 +4,62 @@ import se.sics.cooja.util.StringUtils;
public class IPHCPacketAnalyzer extends PacketAnalyzer {
private static final int IPHC_DISPATCH = 0x60;
public final static int SICSLOWPAN_UDP_PORT_MIN = 0xF0B0;
public final static int SICSLOWPAN_UDP_PORT_MAX = 0xF0BF; /* F0B0 + 15 */
public final static int SICSLOWPAN_DISPATCH_IPV6 = 0x41; /* 01000001 = 65 */
public final static int SICSLOWPAN_DISPATCH_HC1 = 0x42; /* 01000010 = 66 */
public final static int SICSLOWPAN_DISPATCH_IPHC = 0x60; /* 011xxxxx = ... */
public final static int SICSLOWPAN_DISPATCH_FRAG1 = 0xc0; /* 1100= 0xxx */
public final static int SICSLOWPAN_DISPATCH_FRAGN = 0xe0; /* 1110= 0xxx */
/*
* Values of fields within the IPHC encoding first byte
* (C stands for compressed and I for inline)
*/
public final static int SICSLOWPAN_IPHC_TC_C = 0x10;
public final static int SICSLOWPAN_IPHC_FL_C = 0x08;
public final static int SICSLOWPAN_IPHC_NH_C = 0x04;
public final static int SICSLOWPAN_IPHC_TTL_1 = 0x01;
public final static int SICSLOWPAN_IPHC_TTL_64 = 0x02;
public final static int SICSLOWPAN_IPHC_TTL_255 = 0x03;
public final static int SICSLOWPAN_IPHC_TTL_I = 0x00;
/* Values of fields within the IPHC encoding second byte */
public final static int SICSLOWPAN_IPHC_CID = 0x80;
public final static int SICSLOWPAN_IPHC_SAC = 0x40;
public final static int SICSLOWPAN_IPHC_SAM_00 = 0x00;
public final static int SICSLOWPAN_IPHC_SAM_01 = 0x10;
public final static int SICSLOWPAN_IPHC_SAM_10 = 0x20;
public final static int SICSLOWPAN_IPHC_SAM_11 = 0x30;
public final static int SICSLOWPAN_IPHC_M = 0x08;
public final static int SICSLOWPAN_IPHC_DAC = 0x04;
public final static int SICSLOWPAN_IPHC_DAM_00 = 0x00;
public final static int SICSLOWPAN_IPHC_DAM_01 = 0x01;
public final static int SICSLOWPAN_IPHC_DAM_10 = 0x02;
public final static int SICSLOWPAN_IPHC_DAM_11 = 0x03;
private static final int SICSLOWPAN_NHC_UDP_ID = 0xf8;
private static final int SICSLOWPAN_NHC_UDP_C = 0xFB;
private static final int SICSLOWPAN_NHC_UDP_I = 0xF8;
public final static int PROTO_UDP = 17;
public final static int PROTO_TCP = 6;
public final static int PROTO_ICMP = 58;
public final static byte[] UNSPECIFIED_ADDRESS =
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
private static byte[][] addrContexts = new byte[][] {
{(byte)0xaa, (byte)0xaa, 0, 0, 0, 0, 0, 0}
};
private static final int IPHC_DISPATCH = 0x60;
public boolean matchPacket(Packet packet) {
return (packet.get(0) & 0xe0) == IPHC_DISPATCH;
}
@ -22,6 +76,8 @@ public class IPHCPacketAnalyzer extends PacketAnalyzer {
int m = (packet.get(1) >> 3) & 0x01;
int dac = (packet.get(1) >> 2) & 0x01;
int dam = packet.get(1) & 0x03;
int sci = 0;
int dci = 0;
brief.append("iphc tf=" + tf + (nh == 1 ? " nh" : "") + " hl=" + hlim + (cid == 1 ? " cid " : ""));
brief.append((sac == 1 ? " sac" : "") + " sam=" + sam + (m == 1 ? " M" : "") +
@ -31,21 +87,347 @@ public class IPHCPacketAnalyzer extends PacketAnalyzer {
brief.append(" sci=" + (packet.get(2) >> 4) + " dci=" + (packet.get(2) & 0x0f));
}
/* need to decompress while analyzing - add that later... */
verbose.append("<br><b>IPHC HC-06</b><br>");
verbose.append("tf = " + tf + " nhc = " + nh + " hlim = " + hlim + " cid = " + cid);
verbose.append("sac = " + sac + " sam = " + sam + " MCast = " + m + " dac = " + dac +
" dam = " + dam + "<br>");
" dam = " + dam + "<br>");
if (cid == 1) {
verbose.append("Contexts: sci=" + (packet.get(2) >> 4) + " dci=" + (packet.get(2) & 0x0f));
sci = packet.get(2) >> 4;
dci = packet.get(2) & 0x0f;
}
packet.pos += cid == 1 ? 3 : 2;
brief.append("|").append(StringUtils.toHex(packet.getPayload(), 4));
verbose.append("Payload: ").append(StringUtils.toHex(packet.getPayload(), 4));
int hc06_ptr = 2 + cid;
int version = 6;
int trafficClass = 0;
int flowLabel = 0;
int len = 0;
int proto = 0;
int ttl = 0;
byte[] srcAddress = null;
byte[] destAddress = null;
int srcPort = 0;
int destPort = 0;
/* Traffic class and flow label */
if((packet.get(0) & SICSLOWPAN_IPHC_FL_C) == 0) {
/* Flow label are carried inline */
if((packet.get(0) & SICSLOWPAN_IPHC_TC_C) == 0) {
/* Traffic class is carried inline */
flowLabel = packet.getInt(hc06_ptr + 1, 3);
int tmp = packet.get(hc06_ptr);
hc06_ptr += 4;
/* hc06 format of tc is ECN | DSCP , original is DSCP | ECN */
trafficClass = ((tmp >> 2) & 0x3f) | (tmp << 6) & (0x80 + 0x40);
/* ECN rolled down two steps + lowest DSCP bits at top two bits */
} else {
/* highest flow label bits + ECN bits */
int tmp = packet.get(hc06_ptr);
trafficClass = (tmp >> 6) & 0x0f;
flowLabel = packet.getInt(hc06_ptr + 1, 2);
hc06_ptr += 3;
}
} else {
/* Version is always 6! */
/* Version and flow label are compressed */
if((packet.get(0) & SICSLOWPAN_IPHC_TC_C) == 0) {
/* Traffic class is inline */
trafficClass =((packet.get(hc06_ptr) >> 6) & 0x03);
trafficClass = (packet.get(hc06_ptr) << 2);
hc06_ptr += 1;
}
}
/* Next Header */
if((packet.get(0) & SICSLOWPAN_IPHC_NH_C) == 0) {
/* Next header is carried inline */
proto = packet.get(hc06_ptr);
hc06_ptr += 1;
}
/* Hop limit */
switch(packet.get(0) & 0x03) {
case SICSLOWPAN_IPHC_TTL_1:
ttl = 1;
break;
case SICSLOWPAN_IPHC_TTL_64:
ttl = 2;
break;
case SICSLOWPAN_IPHC_TTL_255:
ttl = 255;
break;
case SICSLOWPAN_IPHC_TTL_I:
ttl = packet.get(hc06_ptr);
hc06_ptr += 1;
break;
}
/* context based compression */
if((packet.get(1) & SICSLOWPAN_IPHC_SAC) > 0) {
/* Source address */
byte[] context = null;
if((packet.get(1) & SICSLOWPAN_IPHC_SAM_11) != SICSLOWPAN_IPHC_SAM_00) {
context = addrContexts[sci];
}
switch(packet.get(1) & SICSLOWPAN_IPHC_SAM_11) {
case SICSLOWPAN_IPHC_SAM_00:
/* copy the unspecificed address */
srcAddress = UNSPECIFIED_ADDRESS;
break;
case SICSLOWPAN_IPHC_SAM_01: /* 64 bits */
/* copy prefix from context */
srcAddress = new byte[16];
System.arraycopy(context, 0, srcAddress, 0, 8);
/* copy IID from packet */
packet.copy(hc06_ptr, srcAddress, 8, 8);
hc06_ptr += 8;
break;
case SICSLOWPAN_IPHC_SAM_10: /* 16 bits */
/* unicast address */
srcAddress = new byte[16];
System.arraycopy(context, 0, srcAddress, 0, 8);
/* copy 6 NULL bytes then 2 last bytes of IID */
packet.copy(hc06_ptr, srcAddress, 14, 2);
hc06_ptr += 2;
break;
case SICSLOWPAN_IPHC_SAM_11: /* 0-bits */
/* copy prefix from context */
srcAddress = new byte[16];
System.arraycopy(context, 0, srcAddress, 0, 8);
/* infer IID from L2 address */
System.arraycopy(packet.llsender, 0, srcAddress,
16 - packet.llsender.length, packet.llsender.length);
break;
}
/* end context based compression */
} else {
/* no compression and link local */
switch(packet.get(1) & SICSLOWPAN_IPHC_SAM_11) {
case SICSLOWPAN_IPHC_SAM_00: /* 128 bits */
/* copy whole address from packet */
srcAddress = new byte[16];
packet.copy(hc06_ptr, srcAddress, 0, 16);
hc06_ptr += 16;
break;
case SICSLOWPAN_IPHC_SAM_01: /* 64 bits */
srcAddress = new byte[16];
srcAddress[0] = (byte) 0xfe;
srcAddress[1] = (byte) 0x80;
/* copy IID from packet */
packet.copy(hc06_ptr, srcAddress, 8, 8);
hc06_ptr += 8;
break;
case SICSLOWPAN_IPHC_SAM_10: /* 16 bits */
srcAddress = new byte[16];
srcAddress[0] = (byte) 0xfe;
srcAddress[1] = (byte) 0x80;
packet.copy(hc06_ptr, srcAddress, 14, 2);
hc06_ptr += 2;
break;
case SICSLOWPAN_IPHC_SAM_11: /* 0 bits */
/* setup link-local address */
srcAddress = new byte[16];
srcAddress[0] = (byte) 0xfe;
srcAddress[1] = (byte) 0x80;
/* infer IID from L2 address */
System.arraycopy(packet.llsender, 0, srcAddress,
16 - packet.llsender.length, packet.llsender.length);
break;
}
}
/* Destination address */
/* multicast compression */
if((packet.get(1) & SICSLOWPAN_IPHC_M) != 0) {
/* context based multicast compression */
if((packet.get(1) & SICSLOWPAN_IPHC_DAC) != 0) {
/* TODO: implement this */
} else {
/* non-context based multicast compression */
switch (packet.get(1) & SICSLOWPAN_IPHC_DAM_11) {
case SICSLOWPAN_IPHC_DAM_00: /* 128 bits */
/* copy whole address from packet */
destAddress = new byte[16];
packet.copy(hc06_ptr, destAddress, 0, 16);
hc06_ptr += 16;
break;
case SICSLOWPAN_IPHC_DAM_01: /* 48 bits FFXX::00XX:XXXX:XXXX */
destAddress = new byte[16];
destAddress[0] = (byte) 0xff;
destAddress[1] = packet.get(hc06_ptr);
packet.copy(hc06_ptr + 1, destAddress, 11, 5);
hc06_ptr += 6;
break;
case SICSLOWPAN_IPHC_DAM_10: /* 32 bits FFXX::00XX:XXXX */
destAddress = new byte[16];
destAddress[0] = (byte) 0xff;
destAddress[1] = packet.get(hc06_ptr);
packet.copy(hc06_ptr + 1, destAddress, 13, 3);
hc06_ptr += 4;
break;
case SICSLOWPAN_IPHC_DAM_11: /* 8 bits FF02::00XX */
destAddress = new byte[16];
destAddress[0] = (byte) 0xff;
destAddress[1] = (byte) 0x02;
destAddress[15] = packet.get(hc06_ptr);
hc06_ptr++;
break;
}
}
} else {
/* no multicast */
/* Context based */
if((packet.get(1) & SICSLOWPAN_IPHC_DAC) != 0) {
byte[] context = addrContexts[dci];
switch (packet.get(1) & SICSLOWPAN_IPHC_DAM_11) {
case SICSLOWPAN_IPHC_DAM_01: /* 64 bits */
destAddress = new byte[16];
System.arraycopy(context, 0, destAddress, 0, 8);
/* copy IID from packet */
packet.copy(hc06_ptr, destAddress, 8, 8);
hc06_ptr += 8;
break;
case SICSLOWPAN_IPHC_DAM_10: /* 16 bits */
/* unicast address */
destAddress = new byte[16];
System.arraycopy(context, 0, destAddress, 0, 8);
/* copy IID from packet */
packet.copy(hc06_ptr, destAddress, 14, 2);
hc06_ptr += 2;
break;
case SICSLOWPAN_IPHC_DAM_11: /* 0 bits */
/* unicast address */
destAddress = new byte[16];
System.arraycopy(context, 0, destAddress, 0, 8);
/* infer IID from L2 address */
System.arraycopy(packet.llreceiver, 0, destAddress,
16 - packet.llreceiver.length, packet.llreceiver.length);
break;
}
} else {
/* not context based => link local M = 0, DAC = 0 - same as SAC */
switch (packet.get(1) & SICSLOWPAN_IPHC_DAM_11) {
case SICSLOWPAN_IPHC_DAM_00: /* 128 bits */
destAddress = new byte[16];
packet.copy(hc06_ptr, destAddress, 0, 16);
hc06_ptr += 16;
break;
case SICSLOWPAN_IPHC_DAM_01: /* 64 bits */
destAddress = new byte[16];
destAddress[0] = (byte) 0xfe;
destAddress[1] = (byte) 0x80;
packet.copy(hc06_ptr, destAddress, 8, 8);
hc06_ptr += 8;
break;
case SICSLOWPAN_IPHC_DAM_10: /* 16 bits */
destAddress = new byte[16];
destAddress[0] = (byte) 0xfe;
destAddress[1] = (byte) 0x80;
packet.copy(hc06_ptr, destAddress, 14, 2);
hc06_ptr += 2;
break;
case SICSLOWPAN_IPHC_DAM_11: /* 0 bits */
destAddress = new byte[16];
destAddress[0] = (byte) 0xfe;
destAddress[1] = (byte) 0x80;
System.arraycopy(packet.llreceiver, 0, destAddress,
16 - packet.llreceiver.length, packet.llreceiver.length);
break;
}
}
}
/* Next header processing - continued */
if((packet.get(0) & SICSLOWPAN_IPHC_NH_C) != 0) {
/* TODO: check if this is correct in hc-06 */
/* The next header is compressed, NHC is following */
if((packet.get(hc06_ptr) & 0xFC) == SICSLOWPAN_NHC_UDP_ID) {
proto = PROTO_UDP;
switch(packet.get(hc06_ptr)) {
case (byte) SICSLOWPAN_NHC_UDP_C:
/* 1 byte for NHC, 1 byte for ports, 2 bytes chksum */
srcPort = SICSLOWPAN_UDP_PORT_MIN + (packet.get(hc06_ptr + 1) >> 4);
destPort = SICSLOWPAN_UDP_PORT_MIN + (packet.get(hc06_ptr + 1) & 0x0F);
// memcpy(&SICSLOWPAN_UDP_BUF->udpchksum, hc06_ptr + 2, 2);
// PRINTF("IPHC: Uncompressed UDP ports (4): %x, %x\n",
// SICSLOWPAN_UDP_BUF->srcport, SICSLOWPAN_UDP_BUF->destport);
hc06_ptr += 4;
break;
case (byte) SICSLOWPAN_NHC_UDP_I:
/* 1 byte for NHC, 4 byte for ports, 2 bytes chksum */
srcPort = packet.getInt(hc06_ptr + 1, 2);
destPort = packet.getInt(hc06_ptr + 3, 2);
// memcpy(&SICSLOWPAN_UDP_BUF->udpchksum, hc06_ptr + 5, 2);
// PRINTF("IPHC: Uncompressed UDP ports (7): %x, %x\n",
// SICSLOWPAN_UDP_BUF->srcport, SICSLOWPAN_UDP_BUF->destport);
hc06_ptr += 7;
break;
default:
// PRINTF("sicslowpan uncompress_hdr: error unsupported UDP compression\n");
return;
}
}
}
packet.pos += hc06_ptr;
// /* IP length field. */
// if(ip_len == 0) {
// /* This is not a fragmented packet */
// SICSLOWPAN_IP_BUF->len[0] = 0;
// SICSLOWPAN_IP_BUF->len[1] = packetbuf_datalen() - rime_hdr_len + uncomp_hdr_len - UIP_IPH_LEN;
// } else {
// /* This is a 1st fragment */
// SICSLOWPAN_IP_BUF->len[0] = (ip_len - UIP_IPH_LEN) >> 8;
// SICSLOWPAN_IP_BUF->len[1] = (ip_len - UIP_IPH_LEN) & 0x00FF;
// }
// /* length field in UDP header */
// if(SICSLOWPAN_IP_BUF->proto == UIP_PROTO_UDP) {
// memcpy(&SICSLOWPAN_UDP_BUF->udplen, ipBuf + len[0], 2);
// }
/*--------------------------------------------- */
// packet.pos += cid == 1 ? 3 : 2;
String protoStr = "" + proto;
if (proto == PROTO_ICMP) protoStr = "ICMPv6";
else if (proto == PROTO_UDP) protoStr = "UDP";
else if (proto == PROTO_TCP) protoStr = "TCP";
verbose.append("<br><b>IPv6 Packet: ").append(protoStr).append("</b><br>");
verbose.append("From: ");
printAddress(verbose, srcAddress);
verbose.append(" to ");
printAddress(verbose, destAddress);
verbose.append("<br>");
brief.append("|").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(":");
}
}
}
}

27
tools/cooja/java/se/sics/cooja/plugins/analyzers/PacketAnalyzer.java
View file

@ -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;
@ -23,12 +27,35 @@ public abstract class PacketAnalyzer {
public byte get(int index) {
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);

4
tools/cooja/java/se/sics/cooja/util/StringUtils.java
View file

@ -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('.');