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# $OpenBSD: forwarding.sh,v 1.23 2019/07/20 09:50:58 dtucker Exp $
# Placed in the Public Domain.
tid="local and remote forwarding"
start_sshd
base=33
last=$PORT
fwd=""
CTL=$OBJ/ctl-sock
for j in 0 1 2; do
for i in 0 1 2; do
a=$base$j$i
b=`expr $a + 50`
c=$last
# fwd chain: $a -> $b -> $c
fwd="$fwd -L$a:127.0.0.1:$b -R$b:127.0.0.1:$c"
last=$a
done
done
trace "start forwarding, fork to background"
rm -f $CTL
${SSH} -S $CTL -N -M -F $OBJ/ssh_config -f $fwd somehost
trace "transfer over forwarded channels and check result"
${SSH} -F $OBJ/ssh_config -p$last -o 'ConnectionAttempts=4' \
somehost cat ${DATA} > ${COPY}
test -s ${COPY} || fail "failed copy of ${DATA}"
cmp ${DATA} ${COPY} || fail "corrupted copy of ${DATA}"
${SSH} -F $OBJ/ssh_config -S $CTL -O exit somehost 2>/dev/null
for d in L R; do
trace "exit on -$d forward failure"
# this one should succeed
${SSH} -F $OBJ/ssh_config \
-$d ${base}01:127.0.0.1:$PORT \
-$d ${base}02:127.0.0.1:$PORT \
-$d ${base}03:127.0.0.1:$PORT \
-$d ${base}04:127.0.0.1:$PORT \
-oExitOnForwardFailure=yes somehost true
if [ $? != 0 ]; then
fatal "connection failed, should not"
else
# this one should fail
${SSH} -q -F $OBJ/ssh_config \
-$d ${base}01:127.0.0.1:$PORT \
-$d ${base}02:127.0.0.1:$PORT \
-$d ${base}03:127.0.0.1:$PORT \
-$d ${base}01:localhost:$PORT \
-$d ${base}04:127.0.0.1:$PORT \
-oExitOnForwardFailure=yes somehost true
r=$?
if [ $r != 255 ]; then
fail "connection not termintated, but should ($r)"
fi
fi
done
trace "simple clear forwarding"
${SSH} -F $OBJ/ssh_config -oClearAllForwardings=yes somehost true
trace "clear local forward"
rm -f $CTL
${SSH} -S $CTL -N -M -f -F $OBJ/ssh_config -L ${base}01:127.0.0.1:$PORT \
-oClearAllForwardings=yes somehost
if [ $? != 0 ]; then
fail "connection failed with cleared local forwarding"
else
# this one should fail
${SSH} -F $OBJ/ssh_config -p ${base}01 somehost true \
>>$TEST_REGRESS_LOGFILE 2>&1 && \
fail "local forwarding not cleared"
fi
${SSH} -F $OBJ/ssh_config -S $CTL -O exit somehost 2>/dev/null
trace "clear remote forward"
rm -f $CTL
${SSH} -S $CTL -N -M -f -F $OBJ/ssh_config -R ${base}01:127.0.0.1:$PORT \
-oClearAllForwardings=yes somehost
if [ $? != 0 ]; then
fail "connection failed with cleared remote forwarding"
else
# this one should fail
${SSH} -F $OBJ/ssh_config -p ${base}01 somehost true \
>>$TEST_REGRESS_LOGFILE 2>&1 && \
fail "remote forwarding not cleared"
fi
${SSH} -F $OBJ/ssh_config -S $CTL -O exit somehost 2>/dev/null
trace "stdio forwarding"
cmd="${SSH} -F $OBJ/ssh_config"
$cmd -o "ProxyCommand $cmd -q -W localhost:$PORT somehost" somehost true
if [ $? != 0 ]; then
fail "stdio forwarding"
fi
echo "LocalForward ${base}01 127.0.0.1:$PORT" >> $OBJ/ssh_config
echo "RemoteForward ${base}02 127.0.0.1:${base}01" >> $OBJ/ssh_config
trace "config file: start forwarding, fork to background"
rm -f $CTL
${SSH} -S $CTL -N -M -F $OBJ/ssh_config -f somehost
trace "config file: transfer over forwarded channels and check result"
${SSH} -F $OBJ/ssh_config -p${base}02 -o 'ConnectionAttempts=4' \
somehost cat ${DATA} > ${COPY}
test -s ${COPY} || fail "failed copy of ${DATA}"
cmp ${DATA} ${COPY} || fail "corrupted copy of ${DATA}"
${SSH} -F $OBJ/ssh_config -S $CTL -O exit somehost 2>/dev/null
trace "transfer over chained unix domain socket forwards and check result"
rm -f $OBJ/unix-[123].fwd
rm -f $CTL $CTL.[123]
${SSH} -S $CTL -N -M -f -F $OBJ/ssh_config -R${base}01:[$OBJ/unix-1.fwd] somehost
${SSH} -S $CTL.1 -N -M -f -F $OBJ/ssh_config -L[$OBJ/unix-1.fwd]:[$OBJ/unix-2.fwd] somehost
${SSH} -S $CTL.2 -N -M -f -F $OBJ/ssh_config -R[$OBJ/unix-2.fwd]:[$OBJ/unix-3.fwd] somehost
${SSH} -S $CTL.3 -N -M -f -F $OBJ/ssh_config -L[$OBJ/unix-3.fwd]:127.0.0.1:$PORT somehost
${SSH} -F $OBJ/ssh_config -p${base}01 -o 'ConnectionAttempts=4' \
somehost cat ${DATA} > ${COPY}
test -s ${COPY} || fail "failed copy ${DATA}"
cmp ${DATA} ${COPY} || fail "corrupted copy of ${DATA}"
${SSH} -F $OBJ/ssh_config -S $CTL -O exit somehost 2>/dev/null
${SSH} -F $OBJ/ssh_config -S $CTL.1 -O exit somehost 2>/dev/null
${SSH} -F $OBJ/ssh_config -S $CTL.2 -O exit somehost 2>/dev/null
${SSH} -F $OBJ/ssh_config -S $CTL.3 -O exit somehost 2>/dev/null
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