# $OpenBSD: dynamic-forward.sh,v 1.4 2004/06/22 22:55:56 dtucker Exp $ # Placed in the Public Domain. tid="dynamic forwarding" FWDPORT=`expr $PORT + 1` if [ -x "`which nc`" ] && nc -h 2>&1 | grep "proxy address" >/dev/null; then proxycmd="nc -x 127.0.0.1:$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