# Get the frames with diameter content (take care about '-2' two-pass option and don't add it, because we need to get reassembled parts in their corresponding frames):
# Fields needed (we won't need diameter.hopbyhopid & diameter.endtoendid to verify diameter message as hint patterns; length management will be enough):
-FIELDS="-e frame.number -e frame.time_epoch -e ip.src_host -e ip.dst_host -e diameter.applicationId -e tcp.len -e diameter.length -e frame.protocols -e tcp.segment"
+FIELDS="-e frame.number -e frame.time_epoch -e ip.src_host -e ip.dst_host -e diameter.flags.request -e diameter.applicationId -e tcp.len -e diameter.length -e frame.protocols -e tcp.segment"
tshark -E separator="|" -r $PCAP_FILE -N mntC -Tfields $FIELDS 2>/dev/null | grep -i diameter > $tmpdir/diameter_frames
# Example output:
# /length\
-# frame timestamp src dst App-ID TCP DIAM protocol segments
-# 1|1427215933.697904000|gt_traf|vcbavipt|16777238|432|432|eth:ip:tcp:diameter:diameter:diameter3gpp|
-# 3|1427215934.449523000|vcbavipt|gt_traf|16777238|292|292|eth:ip:tcp:diameter:diameter:diameter3gpp|
-# 5|1427215934.456160000|gt_traf|vcbavipt||1400||eth:ip:tcp:diameter|
-# 6|1427215934.456204000|gt_traf|vcbavipt|16777236|572|1972|eth:ip:tcp:diameter:diameter:diameter3gpp|5,6
-# 8|1427215935.123559000|vcbavipt|gt_traf|16777236|248|248|eth:ip:tcp:diameter:diameter:diameter3gpp|
+# frame timestamp src dst R App-ID TCP DIAM protocol segments
+# 1|1427215933.697904000|gt_traf|vcbavipt|1|16777238|432|432|eth:ip:tcp:diameter:diameter:diameter3gpp|
+# 3|1427215934.449523000|vcbavipt|gt_traf|0|16777238|292|292|eth:ip:tcp:diameter:diameter:diameter3gpp|
+# 5|1427215934.456160000|gt_traf|vcbavipt|||1400||eth:ip:tcp:diameter|
+# 6|1427215934.456204000|gt_traf|vcbavipt|1|16777236|572|1972|eth:ip:tcp:diameter:diameter:diameter3gpp|5,6
+# 8|1427215935.123559000|vcbavipt|gt_traf|0|16777236|248|248|eth:ip:tcp:diameter:diameter:diameter3gpp|
all_frames=( $(cat $tmpdir/diameter_frames | cut -d\| -f1) )
-needs_join=( $(cat $tmpdir/diameter_frames | cut -d\| -f9) )
-main_frames=( $(cat $tmpdir/diameter_frames | awk -F\| '{ if ($7 != "") print $1 }') )
+needs_join=( $(cat $tmpdir/diameter_frames | cut -d\| -f10) )
+main_frames=( $(cat $tmpdir/diameter_frames | awk -F\| '{ if (8 != "") print $1 }') )
# Reassemble procedure (using frame 1 as example):
# (for non segmented frames, it is enough with tcp or diameter length within the frame content itself)
frame_info=$(grep "^${frame}|" $tmpdir/diameter_frames)
# Get the diameter part:
- tcp_len=$(echo $frame_info | cut -d\| -f6)
+ tcp_len=$(echo $frame_info | cut -d\| -f7)
frm_len=$(wc -c $tmpdir/block.$frame | awk '{ print $1 }')
cut_len=$((frm_len-2*tcp_len))
cat $tmpdir/block.$frame | cut -c${cut_len}- > $RESULTS_DIR/$frame.hex
date=$(date -d @$ts)
src=$(echo $frame_info | cut -d\| -f3)
dst=$(echo $frame_info | cut -d\| -f4)
- appid=$(echo $frame_info | cut -d\| -f5)
- echo -e "timestamp=$ts\ndate=$date\nsrc=$src\ndst=$dst\napplicationid=$appid" > $RESULTS_DIR/$frame.metadata
+ isreq=$(echo $frame_info | cut -d\| -f5)
+ appid=$(echo $frame_info | cut -d\| -f6)
+ echo -e "timestamp=$ts\ndate=$date\nsrc=$src\ndst=$dst\nisrequest=$isreq\napplicationid=$appid" > $RESULTS_DIR/$frame.metadata
echo " and $RESULTS_DIR/$frame.metadata"
done
# Delete superfluous metadata:
echo "Deleting superfluous buffers & metadata ..."
-segments=( $(cat $tmpdir/diameter_frames | awk -F\| '{ if ($7 == "") print $1 }') )
+segments=( $(cat $tmpdir/diameter_frames | awk -F\| '{ if ($8 == "") print $1 }') )
for s in ${segments[@]}; do rm $RESULTS_DIR/$s.*; done