Mike Lockwood | 1305e95 | 2011-12-07 08:17:59 -0800 | [diff] [blame] | 1 | # $OpenBSD: dynamic-forward.sh,v 1.9 2011/06/03 00:29:52 dtucker Exp $ |
| 2 | # Placed in the Public Domain. |
| 3 | |
| 4 | tid="dynamic forwarding" |
| 5 | |
| 6 | FWDPORT=`expr $PORT + 1` |
| 7 | |
| 8 | DATA=/bin/ls${EXEEXT} |
| 9 | |
| 10 | if have_prog nc && nc -h 2>&1 | grep "proxy address" >/dev/null; then |
| 11 | proxycmd="nc -x 127.0.0.1:$FWDPORT -X" |
| 12 | elif have_prog connect; then |
| 13 | proxycmd="connect -S 127.0.0.1:$FWDPORT -" |
| 14 | else |
| 15 | echo "skipped (no suitable ProxyCommand found)" |
| 16 | exit 0 |
| 17 | fi |
| 18 | trace "will use ProxyCommand $proxycmd" |
| 19 | |
| 20 | start_sshd |
| 21 | |
| 22 | for p in 1 2; do |
| 23 | n=0 |
| 24 | error="1" |
| 25 | trace "start dynamic forwarding, fork to background" |
| 26 | while [ "$error" -ne 0 -a "$n" -lt 3 ]; do |
| 27 | n=`expr $n + 1` |
| 28 | ${SSH} -$p -F $OBJ/ssh_config -f -D $FWDPORT -q \ |
| 29 | -oExitOnForwardFailure=yes somehost exec sh -c \ |
| 30 | \'"echo \$\$ > $OBJ/remote_pid; exec sleep 444"\' |
| 31 | error=$? |
| 32 | if [ "$error" -ne 0 ]; then |
| 33 | trace "forward failed proto $p attempt $n err $error" |
| 34 | sleep $n |
| 35 | fi |
| 36 | done |
| 37 | if [ "$error" -ne 0 ]; then |
| 38 | fatal "failed to start dynamic forwarding proto $p" |
| 39 | fi |
| 40 | |
| 41 | for s in 4 5; do |
| 42 | for h in 127.0.0.1 localhost; do |
| 43 | trace "testing ssh protocol $p socks version $s host $h" |
| 44 | ${SSH} -F $OBJ/ssh_config \ |
| 45 | -o "ProxyCommand ${proxycmd}${s} $h $PORT" \ |
| 46 | somehost cat $DATA > $OBJ/ls.copy |
| 47 | test -f $OBJ/ls.copy || fail "failed copy $DATA" |
| 48 | cmp $DATA $OBJ/ls.copy || fail "corrupted copy of $DATA" |
| 49 | done |
| 50 | done |
| 51 | |
| 52 | if [ -f $OBJ/remote_pid ]; then |
| 53 | remote=`cat $OBJ/remote_pid` |
| 54 | trace "terminate remote shell, pid $remote" |
| 55 | if [ $remote -gt 1 ]; then |
| 56 | kill -HUP $remote |
| 57 | fi |
| 58 | else |
| 59 | fail "no pid file: $OBJ/remote_pid" |
| 60 | fi |
| 61 | done |