Create dummy gsmtap sink with netcat
otherwise ICMP messages appear in pcap files and some messages are lost since they seem to be dropped by the kernel. Change-Id: Id69d98db63f8260067ad6bc1525fb05c936912f2
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@ -1,10 +1,22 @@
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#!/bin/sh
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PIDFILE=/tmp/dumper.pid
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PIDFILE_PCAP=/tmp/pcap.pid
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TCPDUMP=/usr/sbin/tcpdump
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DUMPCAP=/usr/bin/dumpcap
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PIDFILE_NETCAT=/tmp/netcat.pid
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NETCAT=/bin/nc
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GSMTAP_PORT=4729
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TESTCASE=$1
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kill_rm_pidfile() {
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if [ -e $1 ]; then
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kill "$(cat "$1")"
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rm $1
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fi
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}
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echo "------ $TESTCASE ------"
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date
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@ -12,10 +24,8 @@ if [ "z$TTCN3_PCAP_PATH" = "z" ]; then
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TTCN3_PCAP_PATH=/tmp
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fi
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if [ -e $PIDFILE ]; then
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kill "$(cat "$PIDFILE")"
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rm $PIDFILE
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fi
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kill_rm_pidfile $PIDFILE_NETCAT
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kill_rm_pidfile $PIDFILE_PCAP
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if [ "$(id -u)" = "0" ]; then
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CMD="$TCPDUMP -U"
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@ -39,9 +49,14 @@ if [ -x $DUMPCAP ]; then
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fi
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fi
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# Create a dummy sink for GSMTAP packets
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$NETCAT -l -u -k -p $GSMTAP_PORT >/dev/null 2>$TESTCASE.netcat.stderr &
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PID=$!
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echo $PID > $PIDFILE_NETCAT
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$CMD -s 1500 -n -i any -w "$TTCN3_PCAP_PATH/$TESTCASE.pcap" >$TTCN3_PCAP_PATH/$TESTCASE.pcap.stdout 2>&1 &
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PID=$!
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echo $PID > $PIDFILE
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echo $PID > $PIDFILE_PCAP
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# Wait until packet dumper creates the pcap file and starts recording.
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# We generate some traffic until we see packet dumper catches it.
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@ -1,9 +1,24 @@
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#!/bin/sh
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PIDFILE=/tmp/dumper.pid
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PIDFILE_PCAP=/tmp/pcap.pid
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PIDFILE_NETCAT=/tmp/netcat.pid
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TESTCASE=$1
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VERDICT="$2"
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kill_rm_pidfile() {
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if [ -e $1 ]; then
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PSNAME="$(ps -q "$(cat "$1")" -o comm=)"
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if [ "$PSNAME" != "sudo" ]; then
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kill "$(cat "$1")"
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else
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# NOTE: This requires you to be root or something like
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# "laforge ALL=NOPASSWD: /usr/sbin/tcpdump, /bin/kill" in your sudoers file
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sudo kill "$(cat "$1")"
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fi
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rm $1
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fi
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}
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date
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if [ x"$VERDICT" = x"pass" ]; then
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@ -31,14 +46,5 @@ do
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i=$((i+1))
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done
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if [ -e $PIDFILE ]; then
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DUMPER="$(ps -q "$(cat "$PIDFILE")" -o comm=)"
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if [ "$DUMPER" != "sudo" ]; then
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kill "$(cat "$PIDFILE")"
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else
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# NOTE: This requires you to be root or something like
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# "laforge ALL=NOPASSWD: /usr/sbin/tcpdump, /bin/kill" in your sudoers file
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sudo kill "$(cat "$PIDFILE")"
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fi
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rm $PIDFILE
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fi
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kill_rm_pidfile "$PIDFILE_PCAP"
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kill_rm_pidfile "$PIDFILE_NETCAT"
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