Harald Welte | e057146 | 2018-02-14 15:42:14 +0100 | [diff] [blame] | 1 | #!/bin/sh |
| 2 | |
Pau Espin Pedrol | ad931f2 | 2019-10-02 13:00:51 +0200 | [diff] [blame] | 3 | PIDFILE_PCAP=/tmp/pcap.pid |
Pau Espin Pedrol | 8fdd313 | 2018-02-15 16:01:50 +0100 | [diff] [blame] | 4 | TCPDUMP=/usr/sbin/tcpdump |
Max | 81487c8 | 2019-03-18 14:18:31 +0100 | [diff] [blame] | 5 | DUMPCAP=/usr/bin/dumpcap |
Pau Espin Pedrol | ad931f2 | 2019-10-02 13:00:51 +0200 | [diff] [blame] | 6 | |
| 7 | PIDFILE_NETCAT=/tmp/netcat.pid |
| 8 | NETCAT=/bin/nc |
| 9 | GSMTAP_PORT=4729 |
| 10 | |
Harald Welte | e057146 | 2018-02-14 15:42:14 +0100 | [diff] [blame] | 11 | TESTCASE=$1 |
| 12 | |
Pau Espin Pedrol | ad931f2 | 2019-10-02 13:00:51 +0200 | [diff] [blame] | 13 | kill_rm_pidfile() { |
| 14 | if [ -e $1 ]; then |
| 15 | kill "$(cat "$1")" |
| 16 | rm $1 |
| 17 | fi |
| 18 | } |
| 19 | |
Neels Hofmeyr | ced8acf | 2019-02-26 05:03:22 +0100 | [diff] [blame] | 20 | echo "------ $TESTCASE ------" |
| 21 | date |
| 22 | |
Harald Welte | e057146 | 2018-02-14 15:42:14 +0100 | [diff] [blame] | 23 | if [ "z$TTCN3_PCAP_PATH" = "z" ]; then |
| 24 | TTCN3_PCAP_PATH=/tmp |
| 25 | fi |
| 26 | |
Pau Espin Pedrol | ad931f2 | 2019-10-02 13:00:51 +0200 | [diff] [blame] | 27 | kill_rm_pidfile $PIDFILE_NETCAT |
| 28 | kill_rm_pidfile $PIDFILE_PCAP |
Harald Welte | e057146 | 2018-02-14 15:42:14 +0100 | [diff] [blame] | 29 | |
Max | e521445 | 2019-03-14 18:15:27 +0100 | [diff] [blame] | 30 | if [ "$(id -u)" = "0" ]; then |
| 31 | CMD="$TCPDUMP -U" |
| 32 | else |
Harald Welte | e057146 | 2018-02-14 15:42:14 +0100 | [diff] [blame] | 33 | # NOTE: This requires you to be root or something like |
| 34 | # "laforge ALL=NOPASSWD: /usr/sbin/tcpdump, /bin/kill" in your sudoers file |
Max | e521445 | 2019-03-14 18:15:27 +0100 | [diff] [blame] | 35 | CMD="sudo $TCPDUMP -U" |
Harald Welte | e057146 | 2018-02-14 15:42:14 +0100 | [diff] [blame] | 36 | fi |
Max | 81487c8 | 2019-03-18 14:18:31 +0100 | [diff] [blame] | 37 | |
| 38 | if [ -x $DUMPCAP ]; then |
| 39 | CAP_ERR="1" |
| 40 | if [ -x /sbin/setcap ]; then |
| 41 | # N. B: this check requires libcap2-bin package |
Harald Welte | 5b11d91 | 2020-12-11 15:33:48 +0100 | [diff] [blame] | 42 | /sbin/setcap -q -v 'cap_net_admin,cap_net_raw=pie' $DUMPCAP |
Max | 81487c8 | 2019-03-18 14:18:31 +0100 | [diff] [blame] | 43 | CAP_ERR="$?" |
| 44 | fi |
| 45 | if [ -u $DUMPCAP -o "$CAP_ERR" = "0" ]; then |
| 46 | CMD="$DUMPCAP -q" |
| 47 | else |
| 48 | echo "NOTE: unable to use dumpcap due to missing capabilities or suid bit" |
| 49 | fi |
| 50 | fi |
| 51 | |
Pau Espin Pedrol | ad931f2 | 2019-10-02 13:00:51 +0200 | [diff] [blame] | 52 | # Create a dummy sink for GSMTAP packets |
| 53 | $NETCAT -l -u -k -p $GSMTAP_PORT >/dev/null 2>$TESTCASE.netcat.stderr & |
| 54 | PID=$! |
| 55 | echo $PID > $PIDFILE_NETCAT |
| 56 | |
Max | e521445 | 2019-03-14 18:15:27 +0100 | [diff] [blame] | 57 | $CMD -s 1500 -n -i any -w "$TTCN3_PCAP_PATH/$TESTCASE.pcap" >$TTCN3_PCAP_PATH/$TESTCASE.pcap.stdout 2>&1 & |
Harald Welte | e057146 | 2018-02-14 15:42:14 +0100 | [diff] [blame] | 58 | PID=$! |
Pau Espin Pedrol | ad931f2 | 2019-10-02 13:00:51 +0200 | [diff] [blame] | 59 | echo $PID > $PIDFILE_PCAP |
Pau Espin Pedrol | b01d313 | 2018-02-15 14:43:58 +0100 | [diff] [blame] | 60 | |
Max | e521445 | 2019-03-14 18:15:27 +0100 | [diff] [blame] | 61 | # Wait until packet dumper creates the pcap file and starts recording. |
| 62 | # We generate some traffic until we see packet dumper catches it. |
Pau Espin Pedrol | b01d313 | 2018-02-15 14:43:58 +0100 | [diff] [blame] | 63 | # Timeout is 10 seconds. |
Pau Espin Pedrol | 8fdd313 | 2018-02-15 16:01:50 +0100 | [diff] [blame] | 64 | ping 127.0.0.1 >/dev/null 2>&1 & |
| 65 | PID=$! |
Pau Espin Pedrol | b01d313 | 2018-02-15 14:43:58 +0100 | [diff] [blame] | 66 | i=0 |
Pau Espin Pedrol | 8fdd313 | 2018-02-15 16:01:50 +0100 | [diff] [blame] | 67 | while [ ! -f "$TTCN3_PCAP_PATH/$TESTCASE.pcap" ] || |
Alexander Couzens | d1f4095 | 2018-05-12 16:52:59 +0200 | [diff] [blame] | 68 | [ "$(stat -c '%s' "$TTCN3_PCAP_PATH/$TESTCASE.pcap")" -eq 32 ] |
Pau Espin Pedrol | b01d313 | 2018-02-15 14:43:58 +0100 | [diff] [blame] | 69 | do |
Max | e521445 | 2019-03-14 18:15:27 +0100 | [diff] [blame] | 70 | echo "Waiting for packet dumper to start... $i" |
Pau Espin Pedrol | b01d313 | 2018-02-15 14:43:58 +0100 | [diff] [blame] | 71 | sleep 1 |
| 72 | i=$((i+1)) |
Pau Espin Pedrol | 8fdd313 | 2018-02-15 16:01:50 +0100 | [diff] [blame] | 73 | if [ $i -eq 10 ]; then |
| 74 | break |
| 75 | fi |
Pau Espin Pedrol | b01d313 | 2018-02-15 14:43:58 +0100 | [diff] [blame] | 76 | done |
Pau Espin Pedrol | 8fdd313 | 2018-02-15 16:01:50 +0100 | [diff] [blame] | 77 | kill $PID |