dynamic-forward.sh revision 128456 
1#	$OpenBSD: dynamic-forward.sh,v 1.3 2004/02/28 12:16:57 dtucker Exp $
2#	Placed in the Public Domain.
3
4tid="dynamic forwarding"
5
6PORT=4242
7FWDPORT=4243
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
47done
48