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# $OpenBSD: dynamic-forward.sh,v 1.2 2003/07/03 08:21:46 markus Exp $
# Placed in the Public Domain.
tid="dynamic forwarding"
PORT=4242
FWDPORT=4243
if [ -x `which nc` ] && nc -h 2>&1 | grep "x proxy address" >/dev/null; then
proxycmd="nc -x 127.0.0.1:$FWDPORT -X"
elif [ -x `which connect` ]; then
proxycmd="connect -S 127.0.0.1:$FWDPORT -"
else
echo "skipped (no suitable ProxyCommand found)"
exit 0
fi
trace "will use ProxyCommand $proxycmd"
start_sshd
for p in 1 2; do
trace "start dynamic forwarding, fork to background"
${SSH} -$p -F $OBJ/ssh_config -f -D $FWDPORT -q somehost \
exec sh -c \'"echo \$\$ > $OBJ/remote_pid; exec sleep 444"\'
for s in 4 5; do
for h in 127.0.0.1 localhost; do
trace "testing ssh protocol $p socks version $s host $h"
${SSH} -F $OBJ/ssh_config \
-o "ProxyCommand ${proxycmd}${s} $h $PORT" \
somehost cat /bin/ls > $OBJ/ls.copy
test -f $OBJ/ls.copy || fail "failed copy /bin/ls"
cmp /bin/ls $OBJ/ls.copy || fail "corrupted copy of /bin/ls"
done
done
if [ -f $OBJ/remote_pid ]; then
remote=`cat $OBJ/remote_pid`
trace "terminate remote shell, pid $remote"
if [ $remote -gt 1 ]; then
kill -HUP $remote
fi
else
fail "no pid file: $OBJ/remote_pid"
fi
done
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