211 lines
6.6 KiB
Bash
211 lines
6.6 KiB
Bash
# $OpenBSD: cfgmatchlisten.sh,v 1.3 2018/07/02 14:13:30 dtucker Exp $
|
|
# Placed in the Public Domain.
|
|
|
|
tid="sshd_config matchlisten"
|
|
|
|
pidfile=$OBJ/remote_pid
|
|
fwdport=3301
|
|
fwdspec="localhost:${fwdport}"
|
|
fwd="-R $fwdport:127.0.0.1:$PORT"
|
|
|
|
echo "ExitOnForwardFailure=yes" >> $OBJ/ssh_config
|
|
echo "ExitOnForwardFailure=yes" >> $OBJ/ssh_proxy
|
|
|
|
start_client()
|
|
{
|
|
rm -f $pidfile
|
|
${SSH} -vvv $fwd "$@" somehost true >>$TEST_REGRESS_LOGFILE 2>&1
|
|
r=$?
|
|
if [ $r -ne 0 ]; then
|
|
return $r
|
|
fi
|
|
${SSH} -vvv $fwd "$@" somehost \
|
|
exec sh -c \'"echo \$\$ > $pidfile; exec sleep 100"\' \
|
|
>>$TEST_REGRESS_LOGFILE 2>&1 &
|
|
client_pid=$!
|
|
# Wait for remote end
|
|
n=0
|
|
while test ! -f $pidfile ; do
|
|
sleep 1
|
|
n=`expr $n + 1`
|
|
if test $n -gt 60; then
|
|
if [ "$os" == "windows" ]; then
|
|
powershell.exe /c "stop-process -Id $client_pid -Force" >/dev/null 2>&1
|
|
else
|
|
kill $client_pid
|
|
fatal "timeout waiting for background ssh"
|
|
fi
|
|
fi
|
|
done
|
|
return $r
|
|
}
|
|
|
|
expect_client_ok()
|
|
{
|
|
start_client "$@" ||
|
|
fail "client did not start"
|
|
}
|
|
|
|
expect_client_fail()
|
|
{
|
|
local failmsg="$1"
|
|
shift
|
|
start_client "$@" &&
|
|
fail $failmsg
|
|
}
|
|
|
|
stop_client()
|
|
{
|
|
pid=`cat $pidfile`
|
|
if [ "$os" == "windows" ]; then
|
|
powershell.exe /c "stop-process -Id $pid -Force" >/dev/null 2>&1
|
|
else
|
|
if [ ! -z "$pid" ]; then
|
|
kill $pid
|
|
fi
|
|
wait
|
|
fi
|
|
}
|
|
|
|
cp $OBJ/sshd_proxy $OBJ/sshd_proxy_bak
|
|
echo "PermitListen 127.0.0.1:1" >>$OBJ/sshd_config
|
|
echo "Match Address 127.0.0.1" >>$OBJ/sshd_config
|
|
echo "PermitListen 127.0.0.1:2 127.0.0.1:3 $fwdspec" >>$OBJ/sshd_config
|
|
|
|
grep -v AuthorizedKeysFile $OBJ/sshd_proxy_bak > $OBJ/sshd_proxy
|
|
echo "AuthorizedKeysFile /dev/null" >>$OBJ/sshd_proxy
|
|
echo "PermitListen 127.0.0.1:1" >>$OBJ/sshd_proxy
|
|
echo "Match user $USER" >>$OBJ/sshd_proxy
|
|
echo "AuthorizedKeysFile /dev/null $OBJ/authorized_keys_%u" >>$OBJ/sshd_proxy
|
|
echo "Match Address 127.0.0.1" >>$OBJ/sshd_proxy
|
|
echo "PermitListen 127.0.0.1:2 127.0.0.1:3 $fwdspec" >>$OBJ/sshd_proxy
|
|
|
|
start_sshd
|
|
|
|
#set -x
|
|
|
|
# Test Match + PermitListen in sshd_config. This should be permitted
|
|
trace "match permitlisten localhost"
|
|
expect_client_ok -F $OBJ/ssh_config
|
|
${SSH} -q -p $fwdport -F $OBJ/ssh_config somehost true || \
|
|
fail "match permitlisten permit"
|
|
stop_client
|
|
|
|
# Same but from different source. This should not be permitted
|
|
trace "match permitlisten proxy"
|
|
expect_client_fail "match permitlisten deny" \
|
|
-F $OBJ/ssh_proxy
|
|
|
|
# Retry previous with key option, should also be denied.
|
|
cp /dev/null $OBJ/authorized_keys_$USER
|
|
for t in ${SSH_KEYTYPES}; do
|
|
printf 'permitlisten="'$fwdspec'" ' >> $OBJ/authorized_keys_$USER
|
|
cat $OBJ/$t.pub >> $OBJ/authorized_keys_$USER
|
|
done
|
|
trace "match permitlisten proxy w/key opts"
|
|
expect_client_fail "match permitlisten deny w/key opt"\
|
|
-F $OBJ/ssh_proxy
|
|
|
|
# Test both sshd_config and key options permitting the same dst/port pair.
|
|
# Should be permitted.
|
|
trace "match permitlisten localhost"
|
|
expect_client_ok -F $OBJ/ssh_config
|
|
${SSH} -q -p $fwdport -F $OBJ/ssh_config somehost true || \
|
|
fail "match permitlisten permit"
|
|
stop_client
|
|
|
|
# Test that a bare port number is accepted in PermitListen
|
|
cp $OBJ/sshd_proxy_bak $OBJ/sshd_proxy
|
|
echo "PermitListen 127.0.0.1:1 $fwdport 127.0.0.2:2" >>$OBJ/sshd_proxy
|
|
trace "match permitlisten bare"
|
|
expect_client_ok -F $OBJ/ssh_config
|
|
${SSH} -q -p $fwdport -F $OBJ/ssh_config somehost true || \
|
|
fail "match permitlisten bare"
|
|
stop_client
|
|
|
|
# Test that an incorrect bare port number is denied as expected
|
|
cp $OBJ/sshd_proxy_bak $OBJ/sshd_proxy
|
|
echo "PermitListen 1 2 99" >>$OBJ/sshd_proxy
|
|
trace "match permitlisten bare"
|
|
expect_client_fail -F $OBJ/ssh_config
|
|
|
|
cp $OBJ/sshd_proxy_bak $OBJ/sshd_proxy
|
|
echo "PermitListen 127.0.0.1:1 $fwdspec 127.0.0.2:2" >>$OBJ/sshd_proxy
|
|
echo "Match User $USER" >>$OBJ/sshd_proxy
|
|
echo "PermitListen 127.0.0.1:1 127.0.0.1:2" >>$OBJ/sshd_proxy
|
|
|
|
# Test that a Match overrides a PermitListen in the global section
|
|
trace "match permitlisten proxy w/key opts"
|
|
expect_client_fail "match override permitlisten" \
|
|
-F $OBJ/ssh_proxy
|
|
|
|
cp $OBJ/sshd_proxy_bak $OBJ/sshd_proxy
|
|
echo "PermitListen 127.0.0.1:1 $fwdspec 127.0.0.2:2" >>$OBJ/sshd_proxy
|
|
echo "Match User NoSuchUser" >>$OBJ/sshd_proxy
|
|
echo "PermitListen 127.0.0.1:1 127.0.0.1:2" >>$OBJ/sshd_proxy
|
|
|
|
# Test that a rule that doesn't match doesn't override, plus test a
|
|
# PermitListen entry that's not at the start of the list
|
|
trace "nomatch permitlisten proxy w/key opts"
|
|
expect_client_ok -F $OBJ/ssh_proxy
|
|
${SSH} -q -p $fwdport -F $OBJ/ssh_config somehost true || \
|
|
fail "nomatch override permitlisten"
|
|
stop_client
|
|
|
|
# bind to 127.0.0.1 instead of default localhost
|
|
fwdspec2="127.0.0.1:${fwdport}"
|
|
fwd="-R ${fwdspec2}:127.0.0.1:$PORT"
|
|
|
|
# first try w/ old fwdspec both in server config and key opts
|
|
cp $OBJ/sshd_proxy_bak $OBJ/sshd_proxy
|
|
echo "PermitListen 127.0.0.1:1 $fwdspec 127.0.0.2:2" >>$OBJ/sshd_proxy
|
|
cp /dev/null $OBJ/authorized_keys_$USER
|
|
for t in ${SSH_KEYTYPES}; do
|
|
printf 'permitlisten="'$fwdspec'" ' >> $OBJ/authorized_keys_$USER
|
|
cat $OBJ/$t.pub >> $OBJ/authorized_keys_$USER
|
|
done
|
|
trace "nomatch permitlisten 127.0.0.1 server config and userkey"
|
|
expect_client_fail "nomatch 127.0.0.1 server config and userkey" \
|
|
-F $OBJ/ssh_config
|
|
|
|
# correct server config, denied by key opts
|
|
cp $OBJ/sshd_proxy_bak $OBJ/sshd_proxy
|
|
echo "PermitListen 127.0.0.1:1 ${fwdspec2} 127.0.0.2:2" >>$OBJ/sshd_proxy
|
|
trace "nomatch permitlisten 127.0.0.1 w/key opts"
|
|
expect_client_fail "nomatch 127.0.0.1 w/key opts" \
|
|
-F $OBJ/ssh_config
|
|
|
|
# fix key opts
|
|
cp /dev/null $OBJ/authorized_keys_$USER
|
|
for t in ${SSH_KEYTYPES}; do
|
|
printf 'permitlisten="'$fwdspec2'" ' >> $OBJ/authorized_keys_$USER
|
|
cat $OBJ/$t.pub >> $OBJ/authorized_keys_$USER
|
|
done
|
|
trace "match permitlisten 127.0.0.1 server config w/key opts"
|
|
expect_client_ok -F $OBJ/ssh_proxy
|
|
${SSH} -q -p $fwdport -F $OBJ/ssh_config somehost true || \
|
|
fail "match 127.0.0.1 server config w/key opts"
|
|
stop_client
|
|
|
|
# key opts with bare port number
|
|
cp /dev/null $OBJ/authorized_keys_$USER
|
|
for t in ${SSH_KEYTYPES}; do
|
|
printf 'permitlisten="'$fwdport'" ' >> $OBJ/authorized_keys_$USER
|
|
cat $OBJ/$t.pub >> $OBJ/authorized_keys_$USER
|
|
done
|
|
trace "match permitlisten 127.0.0.1 server config w/key opts (bare)"
|
|
expect_client_ok -F $OBJ/ssh_proxy
|
|
${SSH} -q -p $fwdport -F $OBJ/ssh_config somehost true || \
|
|
fail "match 127.0.0.1 server config w/key opts (bare)"
|
|
stop_client
|
|
|
|
# key opts with incorrect bare port number
|
|
cp /dev/null $OBJ/authorized_keys_$USER
|
|
for t in ${SSH_KEYTYPES}; do
|
|
printf 'permitlisten="99" ' >> $OBJ/authorized_keys_$USER
|
|
cat $OBJ/$t.pub >> $OBJ/authorized_keys_$USER
|
|
done
|
|
trace "match permitlisten 127.0.0.1 server config w/key opts (wrong bare)"
|
|
expect_client_fail "nomatch 127.0.0.1 w/key opts (wrong bare)" \
|
|
-F $OBJ/ssh_config
|