crypto/openssh/regress/dynamic-forward.sh

   1 #       $OpenBSD: dynamic-forward.sh,v 1.13 2017/09/21 19:18:12 markus Exp $
   2 #       Placed in the Public Domain.
   3
   4 tid="dynamic forwarding"
   5
   6 FWDPORT=`expr $PORT + 1`
   7
   8 if have_prog nc && nc -h 2>&1 | grep "proxy address" >/dev/null; then
   9         proxycmd="nc -x 127.0.0.1:$FWDPORT -X"
  10 elif have_prog connect; then
  11         proxycmd="connect -S 127.0.0.1:$FWDPORT -"
  12 else
  13         echo "skipped (no suitable ProxyCommand found)"
  14         exit 0
  15 fi
  16 trace "will use ProxyCommand $proxycmd"
  17
  18 start_sshd
  19
  20 for d in D R; do
  21         n=0
  22         error="1"
  23         trace "start dynamic forwarding, fork to background"
  24
  25         while [ "$error" -ne 0 -a "$n" -lt 3 ]; do
  26                 n=`expr $n + 1`
  27                 ${SSH} -F $OBJ/ssh_config -f -$d $FWDPORT -q \
  28                     -oExitOnForwardFailure=yes somehost exec sh -c \
  29                         \'"echo \$\$ > $OBJ/remote_pid; exec sleep 444"\'
  30                 error=$?
  31                 if [ "$error" -ne 0 ]; then
  32                         trace "forward failed attempt $n err $error"
  33                         sleep $n
  34                 fi
  35         done
  36         if [ "$error" -ne 0 ]; then
  37                 fatal "failed to start dynamic forwarding"
  38         fi
  39
  40         for s in 4 5; do
  41             for h in 127.0.0.1 localhost; do
  42                 trace "testing ssh socks version $s host $h (-$d)"
  43                 ${SSH} -F $OBJ/ssh_config \
  44                         -o "ProxyCommand ${proxycmd}${s} $h $PORT" \
  45                         somehost cat ${DATA} > ${COPY}
  46                 test -f ${COPY}  || fail "failed copy ${DATA}"
  47                 cmp ${DATA} ${COPY} || fail "corrupted copy of ${DATA}"
  48             done
  49         done
  50
  51         if [ -f $OBJ/remote_pid ]; then
  52                 remote=`cat $OBJ/remote_pid`
  53                 trace "terminate remote shell, pid $remote"
  54                 if [ $remote -gt 1 ]; then
  55                         kill -HUP $remote
  56                 fi
  57         else
  58                 fail "no pid file: $OBJ/remote_pid"
  59         fi
  60
  61 done