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only generate pf ruleset if in start or restart mode

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This commit is contained in:
Thomas von Dein
2021-07-02 19:46:56 +02:00
parent 7e5c2ad591
commit 830ca86afe
1 changed files with 86 additions and 78 deletions
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164
jaildk
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@@ -303,92 +303,100 @@ jaildk_rc_pf() {
load-jail-config $jail
if test -n "$rules" -o -n "$maps"; then
# generate a pf.conf based on config variables
echo "# generated pf ruleset for jail, generated on ` date`" > $ruleset
extif=$(netstat -rnfinet | grep default | cut -f4 -w)
fi
# TODO:
# - put this into a separate function
# - clean up if generation of pf-ruleset.conf fails somehow
# - make a syntax check of the generated rules, if possible
case $mode in
start|restart)
if test -n "$rules" -o -n "$maps"; then
# generate a pf.conf based on config variables
echo "# generated pf ruleset for jail, generated on ` date`" > $ruleset
extif=$(netstat -rnfinet | grep default | cut -f4 -w)
fi
if test -n "$ip" -a -n "$maps"; then
# nat and rdr come first
if test -n "$ip" -a -n "$maps"; then
# nat and rdr come first
# SAMPLE ruleset
# maps="web ntp kjk"
# map_web_proto="tcp"
# map_web_exposed_port=80
# map_web_mapped_port=8080
# map_web_exposed_ip="123.12.12.3"
# map_web_exposed_ip6="2a01::ff"
# map_ntp_proto="udp"
# map_ntp_exposed_port=123
# map_ntp_mapped_port=1234
# map_ntp_exposed_ip="123.12.12.33"
# map_kjk_proto="tcp"
# map_kjk_exposed_ports="1501 1502 1502" # maped 1:1
# map_kjk_exposed_ip="123.12.12.33"
# SAMPLE ruleset
# maps="web ntp kjk"
# map_web_proto="tcp"
# map_web_exposed_port=80
# map_web_mapped_port=8080
# map_web_exposed_ip="123.12.12.3"
# map_web_exposed_ip6="2a01::ff"
# map_ntp_proto="udp"
# map_ntp_exposed_port=123
# map_ntp_mapped_port=1234
# map_ntp_exposed_ip="123.12.12.33"
# map_kjk_proto="tcp"
# map_kjk_exposed_ports="1501 1502 1502" # maped 1:1
# map_kjk_exposed_ip="123.12.12.33"
for map in $maps; do
# slurp in the values for this map
eval _proto=\${map_${map}_proto:-tcp}
eval _eport=\${map_${map}_exposed_port}
eval _mport=\${map_${map}_mapped_port:-${_eport}}
eval _eports=\${map_${map}_exposed_ports}
eval _eip=\${map_${map}_exposed_ip:-$extif}
eval _eip6=\${map_${map}_exposed_ip6:-$extif}
for map in $maps; do
# slurp in the values for this map
eval _proto=\${map_${map}_proto:-tcp}
eval _eport=\${map_${map}_exposed_port}
eval _mport=\${map_${map}_mapped_port:-${_eport}}
eval _eports=\${map_${map}_exposed_ports}
eval _eip=\${map_${map}_exposed_ip:-$extif}
eval _eip6=\${map_${map}_exposed_ip6:-$extif}
if test -z ${_eport} -o -z ${_eip}; then
echo "Warning: ignoring incomplete map: $map!"
continue
fi
if test -z ${_eport} -o -z ${_eip}; then
echo "Warning: ignoring incomplete map: $map!"
continue
if test -n "${_eport}"; then
if test -z "{_mport}"; then
# map ports 1:1
_mport=${_eport}
fi
echo "# from map $map" >> $ruleset
jaildk_pf_map $extif ${_eproto} ${_eip} ${_eport} ${_mport} ${ip} >> $ruleset
if test -n "${_eip6}" -a -n "$ip6"; then
jaildk_pf_map $extif ${_eproto} ${_eip6} ${_eport} ${_mport} ${ip6} inet6 >> $ruleset
fi
fi
for port in ${_eports}; do
jaildk_pf_map $extif ${_eproto} ${_eip} ${port} ${port} ${ip} >> $ruleset
if test -n "${_eip6}" -a -n "$ip6"; then
jaildk_pf_map $extif ${_eproto} ${_eip6} ${port} ${port} ${ip6} inet6 >> $ruleset
fi
done
done
fi
if test -n "${_eport}"; then
if test -z "{_mport}"; then
# map ports 1:1
_mport=${_eport}
fi
echo "# from map $map" >> $ruleset
jaildk_pf_map $extif ${_eproto} ${_eip} ${_eport} ${_mport} ${ip} >> $ruleset
if test -n "$ip" -a -n "$rules"; then
# rules="open web"
# rule_open="any"
# rule_web_proto="tcp"_
# rule_web_port="80,443"
if test -n "${_eip6}" -a -n "$ip6"; then
jaildk_pf_map $extif ${_eproto} ${_eip6} ${_eport} ${_mport} ${ip6} inet6 >> $ruleset
fi
# pass in quick on $ext proto tcp from any to $extip port 80 keep state
for rule $rules; do
eval _proto=\${rule_${rule}_proto:-tcp}
eval _port=\${rule_${rule}_port}
if test -n "${_port}"; then
echo "# from map $map" >> $ruleset
jaildk_pf_rule $extif ${_proto} ${ip} ${_port} >> $ruleset
else
echo "Warning: incomplete rule: $rule!"
continue
fi
if test -n "${ip6}"; then
jaildk_pf_rule $extif ${_proto} ${ip6} ${_port} inet6 >> $ruleset
fi
done
fi
for port in ${_eports}; do
jaildk_pf_map $extif ${_eproto} ${_eip} ${port} ${port} ${ip} >> $ruleset
if test -n "${_eip6}" -a -n "$ip6"; then
jaildk_pf_map $extif ${_eproto} ${_eip6} ${port} ${port} ${ip6} inet6 >> $ruleset
fi
done
done
fi
if test -n "$ip" -a -n "$rules"; then
# rules="open web"
# rule_open="any"
# rule_web_proto="tcp"_
# rule_web_port="80,443"
# pass in quick on $ext proto tcp from any to $extip port 80 keep state
for rule $rules; do
eval _proto=\${rule_${rule}_proto:-tcp}
eval _port=\${rule_${rule}_port}
if test -n "${_port}"; then
echo "# from map $map" >> $ruleset
jaildk_pf_rule $extif ${_proto} ${ip} ${_port} >> $ruleset
else
echo "Warning: incomplete rule: $rule!"
continue
fi
if test -n "${ip6}"; then
jaildk_pf_rule $extif ${_proto} ${ip6} ${_port} inet6 >> $ruleset
fi
done
fi
;;
esac
if test -s $ruleset; then
anchor="$jail/jaildk"