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68 lines
1.6 KiB
Bash
68 lines
1.6 KiB
Bash
# $OpenBSD: dynamic-forward.sh,v 1.6 2011/05/20 06:32:30 dtucker Exp $
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# Placed in the Public Domain.
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tid="dynamic forwarding"
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FWDPORT=`expr $PORT + 1`
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DATA=/bin/ls${EXEEXT}
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if have_prog nc && nc -h 2>&1 | grep "proxy address" >/dev/null; then
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proxycmd="nc -x 127.0.0.1:$FWDPORT -X"
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elif have_prog connect; then
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proxycmd="connect -S 127.0.0.1:$FWDPORT -"
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else
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echo "skipped (no suitable ProxyCommand found)"
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exit 0
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fi
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trace "will use ProxyCommand $proxycmd"
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start_sshd
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for p in 1 2; do
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trace "start dynamic forwarding, fork to background"
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rm -f $OBJ/remote_pid
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${SSH} -$p -F $OBJ/ssh_config -D $FWDPORT -q somehost \
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exec sh -c \'"echo \$\$ > $OBJ/remote_pid; exec sleep 444"\' &
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client_pid=$!
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# Wait for ssh to start
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n=0
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while test ! -f $OBJ/remote_pid; do
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sleep 1
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n=`expr $n + 1`
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if test $n -gt 60; then
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kill $client_pid
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fail "Timed out waiting for client to connect"
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fi
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done
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for s in 4 5; do
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for h in 127.0.0.1 localhost; do
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trace "testing ssh protocol $p socks version $s host $h"
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${SSH} -F $OBJ/ssh_config \
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-o "ProxyCommand ${proxycmd}${s} $h $PORT" \
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somehost cat $DATA > $OBJ/ls.copy
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test -f $OBJ/ls.copy || fail "failed copy $DATA"
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cmp $DATA $OBJ/ls.copy || fail "corrupted copy of $DATA"
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done
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done
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if [ -f $OBJ/remote_pid ]; then
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remote=`cat $OBJ/remote_pid`
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trace "terminate remote shell, pid $remote"
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if [ $remote -gt 1 ]; then
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kill -HUP $remote
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fi
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rm -f $OBJ/remote_pid
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else
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fail "no pid file: $OBJ/remote_pid"
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fi
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# Wait for listening ssh to terminate
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wait
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# Must allow time for connection tear-down
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sleep 2
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done
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