openssh-portable/regress/forwarding.sh

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# $OpenBSD: forwarding.sh,v 1.6 2006/07/11 18:51:21 markus Exp $
# Placed in the Public Domain.
tid="local and remote forwarding"
DATA=/bin/ls${EXEEXT}
start_sshd
base=33
last=$PORT
fwd=""
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
for p in 1 2; do
q=`expr 3 - $p`
trace "start forwarding, fork to background"
${SSH} -$p -F $OBJ/ssh_config -f $fwd somehost sleep 10
trace "transfer over forwarded channels and check result"
${SSH} -$q -F $OBJ/ssh_config -p$last -o 'ConnectionAttempts=4' \
somehost cat $DATA > $OBJ/ls.copy
test -f $OBJ/ls.copy || fail "failed copy $DATA"
cmp $DATA $OBJ/ls.copy || fail "corrupted copy of $DATA"
sleep 10
done
for p in 1 2; do
for d in L R; do
trace "exit on -$d forward failure, proto $p"
# this one should succeed
${SSH} -$p -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
fail "connection failed, should not"
else
# this one should fail
${SSH} -q -$p -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 ${base}01:127.0.0.1:$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
done
for p in 1 2; do
trace "simple clear forwarding proto $p"
${SSH} -$p -F $OBJ/ssh_config -oClearAllForwardings=yes somehost true
trace "clear local forward proto $p"
${SSH} -$p -f -F $OBJ/ssh_config -L ${base}01:127.0.0.1:$PORT \
-oClearAllForwardings=yes somehost sleep 10
if [ $? != 0 ]; then
fail "connection failed with cleared local forwarding"
else
# this one should fail
${SSH} -$p -F $OBJ/ssh_config -p ${base}01 true \
2>${TEST_SSH_LOGFILE} && \
fail "local forwarding not cleared"
fi
sleep 10
trace "clear remote forward proto $p"
${SSH} -$p -f -F $OBJ/ssh_config -R ${base}01:127.0.0.1:$PORT \
-oClearAllForwardings=yes somehost sleep 10
if [ $? != 0 ]; then
fail "connection failed with cleared remote forwarding"
else
# this one should fail
${SSH} -$p -F $OBJ/ssh_config -p ${base}01 true \
2>${TEST_SSH_LOGFILE} && \
fail "remote forwarding not cleared"
fi
sleep 10
done