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59 lines
1.5 KiB
59 lines
1.5 KiB
# $OpenBSD: dynamic-forward.sh,v 1.11 2015/03/03 22:35:19 markus Exp $ |
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# Placed in the Public Domain. |
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tid="dynamic forwarding" |
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FWDPORT=`expr $PORT + 1` |
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if have_prog nc && nc -h 2>&1 | grep "proxy address" >/dev/null; then |
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proxycmd="nc -x 127.0.0.1:$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 ${SSH_PROTOCOLS}; do |
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n=0 |
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error="1" |
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trace "start dynamic forwarding, fork to background" |
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while [ "$error" -ne 0 -a "$n" -lt 3 ]; do |
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n=`expr $n + 1` |
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${SSH} -$p -F $OBJ/ssh_config -f -D $FWDPORT -q \ |
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-oExitOnForwardFailure=yes somehost exec sh -c \ |
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\'"echo \$\$ > $OBJ/remote_pid; exec sleep 444"\' |
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error=$? |
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if [ "$error" -ne 0 ]; then |
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trace "forward failed proto $p attempt $n err $error" |
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sleep $n |
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fi |
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done |
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if [ "$error" -ne 0 ]; then |
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fatal "failed to start dynamic forwarding proto $p" |
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fi |
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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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else |
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fail "no pid file: $OBJ/remote_pid" |
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fi |
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done
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