1# $OpenBSD: dynamic-forward.sh,v 1.4 2004/06/22 22:55:56 dtucker Exp $ 2# Placed in the Public Domain. 3 4tid="dynamic forwarding" 5 6FWDPORT=`expr $PORT + 1` 7 8DATA=/bin/ls${EXEEXT} 9 10if have_prog nc && nc -h 2>&1 | grep "proxy address" >/dev/null; then 11 proxycmd="nc -x 127.0.0.1:$FWDPORT -X" 12elif have_prog connect; then 13 proxycmd="connect -S 127.0.0.1:$FWDPORT -" 14else 15 echo "skipped (no suitable ProxyCommand found)" 16 exit 0 17fi 18trace "will use ProxyCommand $proxycmd" 19 20start_sshd 21 22for p in 1 2; do 23 trace "start dynamic forwarding, fork to background" 24 ${SSH} -$p -F $OBJ/ssh_config -f -D $FWDPORT -q somehost \ 25 exec sh -c \'"echo \$\$ > $OBJ/remote_pid; exec sleep 444"\' 26 27 for s in 4 5; do 28 for h in 127.0.0.1 localhost; do 29 trace "testing ssh protocol $p socks version $s host $h" 30 ${SSH} -F $OBJ/ssh_config \ 31 -o "ProxyCommand ${proxycmd}${s} $h $PORT" \ 32 somehost cat $DATA > $OBJ/ls.copy 33 test -f $OBJ/ls.copy || fail "failed copy $DATA" 34 cmp $DATA $OBJ/ls.copy || fail "corrupted copy of $DATA" 35 done 36 done 37 38 if [ -f $OBJ/remote_pid ]; then 39 remote=`cat $OBJ/remote_pid` 40 trace "terminate remote shell, pid $remote" 41 if [ $remote -gt 1 ]; then 42 kill -HUP $remote 43 fi 44 else 45 fail "no pid file: $OBJ/remote_pid" 46 fi 47 48 # Must allow time for connection tear-down 49 sleep 2 50done 51