def build_zone_forward_port_rules(self, enable, zone, filter_chain, port,
protocol, toport, toaddr, mark_id):
add_del = { True: "-A", False: "-D" }[enable]
mark_str = "0x%x" % mark_id
mark = [ "-m", "mark", "--mark", mark_str ]
to = ""
if toaddr:
if check_single_address("ipv6", toaddr):
to += "[%s]" % toaddr
else:
to += toaddr
if toport and toport != "":
to += ":%s" % portStr(toport, "-")
target = DEFAULT_ZONE_TARGET.format(chain=SHORTCUTS["PREROUTING"],
zone=zone)
rules = []
rules.append([ add_del, "%s_allow" % (target), "-t", "mangle",
"-p", protocol, "--dport", portStr(port),
"-j", "MARK", "--set-mark", mark_str ])
# local and remote
rules.append([ add_del, "%s_allow" % (target), "-t", "nat",
"-p", protocol ] + mark +
[ "-j", "DNAT", "--to-destination", to ])
target = DEFAULT_ZONE_TARGET.format(chain=SHORTCUTS[filter_chain],
zone=zone)
rules.append([ add_del, "%s_allow" % (target),
"-t", "filter", "-m", "conntrack",
"--ctstate", "NEW" ] +
mark + [ "-j", "ACCEPT" ])
return rules
def build_zone_forward_port_rules(self,
enable,
zone,
filter_chain,
port,
protocol,
toport,
toaddr,
mark_id,
rich_rule=None):
add_del = {True: "-A", False: "-D"}[enable]
mark_str = "0x%x" % mark_id
mark = ["-m", "mark", "--mark", mark_str]
to = ""
if toaddr:
if check_single_address("ipv6", toaddr):
to += "[%s]" % toaddr
else:
to += toaddr
if toport and toport != "":
to += ":%s" % portStr(toport, "-")
target = DEFAULT_ZONE_TARGET.format(chain=SHORTCUTS["PREROUTING"],
zone=zone)
rule_fragment = ["-p", protocol, "--dport", portStr(port)]
if rich_rule:
rule_fragment += self._rich_rule_destination_fragment(
rich_rule.destination)
rule_fragment += self._rich_rule_source_fragment(rich_rule.source)
rules = []
if rich_rule:
rules.append(
self._rich_rule_log(rich_rule, enable, "mangle", target,
rule_fragment))
rules.append([add_del, "%s_allow" % (target), "-t", "mangle"] +
rule_fragment + ["-j", "MARK", "--set-mark", mark_str])
# local and remote
rules.append(
[add_del,
"%s_allow" % (target), "-t", "nat", "-p", protocol] + mark +
["-j", "DNAT", "--to-destination", to])
target = DEFAULT_ZONE_TARGET.format(chain=SHORTCUTS[filter_chain],
zone=zone)
rules.append([
add_del,
"%s_allow" %
(target), "-t", "filter", "-m", "conntrack", "--ctstate", "NEW"
] + mark + ["-j", "ACCEPT"])
return rules
def queryForwardPort(self, port, protocol, toport, toaddr, sender=None):
port = dbus_to_python(port, str)
protocol = dbus_to_python(protocol, str)
toport = dbus_to_python(toport, str)
toaddr = dbus_to_python(toaddr, str)
log.debug1("config.zone.%d.queryForwardPort('%s', '%s', '%s', '%s')",
self.id, port, protocol, toport, toaddr)
fwp_id = (portStr(port, "-"), protocol, portStr(toport, "-"),
str(toaddr))
return fwp_id in self.getSettings()[9]
def build_zone_source_ports_rules(self, enable, zone, proto, port,
destination=None, rich_rule=None):
add_del = { True: "-A", False: "-D" }[enable]
table = "filter"
target = DEFAULT_ZONE_TARGET.format(chain=SHORTCUTS["INPUT"], zone=zone)
rule_fragment = [ "-p", proto ]
if port:
rule_fragment += [ "--sport", "%s" % portStr(port) ]
if destination:
rule_fragment += [ "-d", destination ]
if rich_rule:
rule_fragment += self._rich_rule_destination_fragment(rich_rule.destination)
rule_fragment += self._rich_rule_source_fragment(rich_rule.source)
if not rich_rule or rich_rule.action != Rich_Mark:
rule_fragment += [ "-m", "conntrack", "--ctstate", "NEW" ]
rules = []
if rich_rule:
rules.append(self._rich_rule_log(rich_rule, enable, table, target, rule_fragment))
rules.append(self._rich_rule_audit(rich_rule, enable, table, target, rule_fragment))
rules.append(self._rich_rule_action(zone, rich_rule, enable, table, target, rule_fragment))
else:
rules.append([add_del, "%s_allow" % (target), "-t", table] +
rule_fragment + [ "-j", "ACCEPT" ])
return rules
def removeForwardPort(self, port, protocol, toport, toaddr, sender=None):
port = dbus_to_python(port, str)
protocol = dbus_to_python(protocol, str)
toport = dbus_to_python(toport, str)
toaddr = dbus_to_python(toaddr, str)
log.debug1("config.zone.%d.removeForwardPort('%s', '%s', '%s', '%s')",
self.id, port, protocol, toport, toaddr)
self.parent.accessCheck(sender)
fwp_id = (portStr(port, "-"), protocol, portStr(toport, "-"),
str(toaddr))
settings = list(self.getSettings())
if fwp_id not in settings[9]:
raise FirewallError(NOT_ENABLED,
"%s:%s:%s:%s" % (port, protocol, toport, toaddr))
settings[9].remove(fwp_id)
self.update(settings)
def addPort(self, port, protocol, sender=None):
port = dbus_to_python(port, str)
protocol = dbus_to_python(protocol, str)
log.debug1("%s.addPort('%s', '%s')", self._log_prefix, port, protocol)
self.parent.accessCheck(sender)
settings = list(self.getSettings())
existing_port_ids = list(
filter(lambda x: x[1] == protocol, settings[6]))
for port_id in existing_port_ids:
if portInPortRange(port, port_id[0]):
raise FirewallError(errors.ALREADY_ENABLED,
"%s:%s" % (port, protocol))
added_ranges, removed_ranges = coalescePortRange(
port, [_port for (_port, _protocol) in existing_port_ids])
for range in removed_ranges:
settings[6].remove((portStr(range, "-"), protocol))
for range in added_ranges:
settings[6].append((portStr(range, "-"), protocol))
self.update(settings)
def build_zone_ports_rule(self, enable, zone, proto, port, destination=None):
add_del = { True: "-A", False: "-D" }[enable]
target = DEFAULT_ZONE_TARGET.format(chain=SHORTCUTS["INPUT"], zone=zone)
rule = [ add_del, "%s_allow" % (target), "-t", "filter", "-p", proto ]
if port:
rule += [ "--dport", "%s" % portStr(port) ]
if destination:
rule += [ "-d", destination ]
rule += [ "-m", "conntrack", "--ctstate", "NEW" ]
rule += [ "-j", "ACCEPT" ]
return rule
def build_zone_helper_ports_rules(self, enable, zone, proto, port,
destination, helper_name):
add_del = {True: "-A", False: "-D"}[enable]
target = DEFAULT_ZONE_TARGET.format(chain=SHORTCUTS["PREROUTING"],
zone=zone)
rule = [add_del, "%s_allow" % (target), "-t", "raw", "-p", proto]
if port:
rule += ["--dport", "%s" % portStr(port)]
if destination:
rule += ["-d", destination]
rule += ["-j", "CT", "--helper", helper_name]
return [rule]
def build_zone_helper_ports_rule(self, enable, zone, proto, port,
destination, helper_name):
add_del = { True: "-A", False: "-D" }[enable]
target = DEFAULT_ZONE_TARGET.format(chain=SHORTCUTS["PREROUTING"],
zone=zone)
rule = [ add_del, "%s_allow" % (target), "-t", "raw", "-p", proto ]
if port:
rule += [ "--dport", "%s" % portStr(port) ]
if destination:
rule += [ "-d", destination ]
rule += [ "-j", "CT", "--helper", helper_name ]
return rule
def build_zone_source_ports_rule(self,
enable,
zone,
proto,
port,
destination=None):
add_del = {True: "-A", False: "-D"}[enable]
target = DEFAULT_ZONE_TARGET.format(chain=SHORTCUTS["INPUT"],
zone=zone)
rule = [add_del, "%s_allow" % (target), "-t", "filter", "-p", proto]
if port:
rule += ["--sport", "%s" % portStr(port)]
if destination:
rule += ["-d", destination]
rule += ["-m", "conntrack", "--ctstate", "NEW"]
rule += ["-j", "ACCEPT"]
return rule
def common_startElement(obj, name, attrs):
if name == "short":
pass
elif name == "description":
pass
elif name == "service":
if obj._rule:
if obj._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(obj._rule))
obj._rule_error = True
return True
obj._rule.element = rich.Rich_Service(attrs["name"])
return True
if attrs["name"] not in obj.item.services:
obj.item.services.append(attrs["name"])
else:
log.warning("Service '%s' already set, ignoring.", attrs["name"])
elif name == "port":
if obj._rule:
if obj._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(obj._rule))
obj._rule_error = True
return True
obj._rule.element = rich.Rich_Port(attrs["port"],
attrs["protocol"])
return True
check_port(attrs["port"])
check_tcpudp(attrs["protocol"])
entry = (portStr(attrs["port"], "-"), attrs["protocol"])
if entry not in obj.item.ports:
obj.item.ports.append(entry)
else:
log.warning("Port '%s/%s' already set, ignoring.", attrs["port"],
attrs["protocol"])
elif name == "protocol":
if obj._rule:
if obj._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(obj._rule))
obj._rule_error = True
return True
obj._rule.element = rich.Rich_Protocol(attrs["value"])
else:
check_protocol(attrs["value"])
if attrs["value"] not in obj.item.protocols:
obj.item.protocols.append(attrs["value"])
else:
log.warning("Protocol '%s' already set, ignoring.",
attrs["value"])
elif name == "tcp-mss-clamp":
if obj._rule:
if obj._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(obj._rule))
obj._rule_error = True
return True
_value = "pmtu"
if "value" in attrs:
_value = attrs["value"]
obj._rule.element = rich.Rich_Tcp_Mss_Clamp(_value)
else:
log.warning("Invalid rule: tcp-mss-clamp '%s' outside of rule",
attrs["value"])
elif name == "icmp-block":
if obj._rule:
if obj._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(obj._rule))
obj._rule_error = True
return True
obj._rule.element = rich.Rich_IcmpBlock(attrs["name"])
return True
if attrs["name"] not in obj.item.icmp_blocks:
obj.item.icmp_blocks.append(attrs["name"])
else:
log.warning("icmp-block '%s' already set, ignoring.",
attrs["name"])
elif name == "icmp-type":
if obj._rule:
if obj._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(obj._rule))
obj._rule_error = True
return True
obj._rule.element = rich.Rich_IcmpType(attrs["name"])
return True
else:
log.warning("Invalid rule: icmp-block '%s' outside of rule",
attrs["name"])
elif name == "masquerade":
if obj._rule:
if obj._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(obj._rule))
obj._rule_error = True
return True
obj._rule.element = rich.Rich_Masquerade()
else:
if obj.item.masquerade:
log.warning("Masquerade already set, ignoring.")
else:
obj.item.masquerade = True
elif name == "forward-port":
to_port = ""
if "to-port" in attrs:
to_port = attrs["to-port"]
to_addr = ""
if "to-addr" in attrs:
to_addr = attrs["to-addr"]
if obj._rule:
if obj._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(obj._rule))
obj._rule_error = True
return True
obj._rule.element = rich.Rich_ForwardPort(attrs["port"],
attrs["protocol"],
to_port, to_addr)
return True
check_port(attrs["port"])
check_tcpudp(attrs["protocol"])
if to_port:
check_port(to_port)
if to_addr:
if not checkIP(to_addr) and not checkIP6(to_addr):
raise FirewallError(errors.INVALID_ADDR,
"to-addr '%s' is not a valid address" \
% to_addr)
entry = (portStr(attrs["port"],
"-"), attrs["protocol"], portStr(to_port,
"-"), str(to_addr))
if entry not in obj.item.forward_ports:
obj.item.forward_ports.append(entry)
else:
log.warning("Forward port %s/%s%s%s already set, ignoring.",
attrs["port"], attrs["protocol"],
" >%s" % to_port if to_port else "",
" @%s" % to_addr if to_addr else "")
elif name == "source-port":
if obj._rule:
if obj._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(obj._rule))
obj._rule_error = True
return True
obj._rule.element = rich.Rich_SourcePort(attrs["port"],
attrs["protocol"])
return True
check_port(attrs["port"])
check_tcpudp(attrs["protocol"])
entry = (portStr(attrs["port"], "-"), attrs["protocol"])
if entry not in obj.item.source_ports:
obj.item.source_ports.append(entry)
else:
log.warning("Source port '%s/%s' already set, ignoring.",
attrs["port"], attrs["protocol"])
elif name == "destination":
if not obj._rule:
log.warning('Invalid rule: Destination outside of rule')
obj._rule_error = True
return True
if obj._rule.destination:
log.warning(
"Invalid rule: More than one destination in rule '%s', ignoring.",
str(obj._rule))
return True
invert = False
address = None
if "address" in attrs:
address = attrs["address"]
ipset = None
if "ipset" in attrs:
ipset = attrs["ipset"]
if "invert" in attrs and \
attrs["invert"].lower() in [ "yes", "true" ]:
invert = True
obj._rule.destination = rich.Rich_Destination(address, ipset, invert)
elif name in ["accept", "reject", "drop", "mark"]:
if not obj._rule:
log.warning('Invalid rule: Action outside of rule')
obj._rule_error = True
return True
if obj._rule.action:
log.warning('Invalid rule: More than one action')
obj._rule_error = True
return True
if name == "accept":
obj._rule.action = rich.Rich_Accept()
elif name == "reject":
_type = None
if "type" in attrs:
_type = attrs["type"]
obj._rule.action = rich.Rich_Reject(_type)
elif name == "drop":
obj._rule.action = rich.Rich_Drop()
elif name == "mark":
_set = attrs["set"]
obj._rule.action = rich.Rich_Mark(_set)
obj._limit_ok = obj._rule.action
elif name == "log":
if not obj._rule:
log.warning('Invalid rule: Log outside of rule')
return True
if obj._rule.log:
log.warning('Invalid rule: More than one log')
return True
level = None
if "level" in attrs:
level = attrs["level"]
if level not in [
"emerg", "alert", "crit", "error", "warning", "notice",
"info", "debug"
]:
log.warning('Invalid rule: Invalid log level')
obj._rule_error = True
return True
prefix = None
if "prefix" in attrs:
prefix = attrs["prefix"]
if not prefix or len(prefix) > 127:
log.warning('Invalid rule: Invalid log prefix')
obj._rule_error = True
return True
obj._rule.log = rich.Rich_Log(prefix, level)
obj._limit_ok = obj._rule.log
elif name == "nflog":
if not obj._rule:
log.warning('Invalid rule: Log outside of rule')
return True
if obj._rule.log:
log.warning('Invalid rule: More than one log')
return True
group = None
if "group" in attrs:
group = attrs["group"]
if not checkUINT16(group):
log.warning('Invalid rule: Invalid nflog group value')
obj._rule_error = True
return True
prefix = None
if "prefix" in attrs:
prefix = attrs["prefix"]
if not prefix or len(prefix) > 127:
log.warning('Invalid rule: Invalid nflog prefix')
obj._rule_error = True
return True
threshold = None
if "queue-size" in attrs:
threshold = attrs["queue-size"]
if not checkUINT16(threshold):
log.warning('Invalid rule: Invalid nflog queue-size')
obj._rule_error = True
return True
obj._rule.log = rich.Rich_NFLog(group, prefix, threshold)
obj._limit_ok = obj._rule.log
elif name == "audit":
if not obj._rule:
log.warning('Invalid rule: Audit outside of rule')
return True
if obj._rule.audit:
log.warning(
"Invalid rule: More than one audit in rule '%s', ignoring.",
str(obj._rule))
obj._rule_error = True
return True
obj._rule.audit = rich.Rich_Audit()
obj._limit_ok = obj._rule.audit
elif name == "rule":
family = None
priority = 0
if "family" in attrs:
family = attrs["family"]
if family not in ["ipv4", "ipv6"]:
log.warning('Invalid rule: Rule family "%s" invalid',
attrs["family"])
obj._rule_error = True
return True
if "priority" in attrs:
priority = int(attrs["priority"])
obj._rule = rich.Rich_Rule(family=family, priority=priority)
elif name == "limit":
if not obj._limit_ok:
log.warning('Invalid rule: Limit outside of action, log and audit')
obj._rule_error = True
return True
if obj._limit_ok.limit:
log.warning(
"Invalid rule: More than one limit in rule '%s', ignoring.",
str(obj._rule))
obj._rule_error = True
return True
value = attrs["value"]
obj._limit_ok.limit = rich.Rich_Limit(value)
else:
return False
return True
def startElement(self, name, attrs):
IO_Object_ContentHandler.startElement(self, name, attrs)
if self._rule_error:
return
self.item.parser_check_element_attrs(name, attrs)
if name == "zone":
if "name" in attrs:
log.warning("Ignoring deprecated attribute name='%s'",
attrs["name"])
if "version" in attrs:
self.item.version = attrs["version"]
if "immutable" in attrs:
log.warning("Ignoring deprecated attribute immutable='%s'",
attrs["immutable"])
if "target" in attrs:
target = attrs["target"]
if target not in ZONE_TARGETS:
raise FirewallError(errors.INVALID_TARGET, target)
if target != "" and target != DEFAULT_ZONE_TARGET:
self.item.target = target
elif name == "short":
pass
elif name == "description":
pass
elif name == "service":
if self._rule:
if self._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = rich.Rich_Service(attrs["name"])
return
if attrs["name"] not in self.item.services:
self.item.services.append(attrs["name"])
else:
log.warning("Service '%s' already set, ignoring.",
attrs["name"])
elif name == "port":
if self._rule:
if self._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = rich.Rich_Port(attrs["port"],
attrs["protocol"])
return
check_port(attrs["port"])
check_tcpudp(attrs["protocol"])
entry = (portStr(attrs["port"], "-"), attrs["protocol"])
if entry not in self.item.ports:
self.item.ports.append(entry)
else:
log.warning("Port '%s/%s' already set, ignoring.",
attrs["port"], attrs["protocol"])
elif name == "protocol":
if self._rule:
if self._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = rich.Rich_Protocol(attrs["value"])
else:
check_protocol(attrs["value"])
if attrs["value"] not in self.item.protocols:
self.item.protocols.append(attrs["value"])
else:
log.warning("Protocol '%s' already set, ignoring.",
attrs["value"])
elif name == "icmp-block":
if self._rule:
if self._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = rich.Rich_IcmpBlock(attrs["name"])
return
if attrs["name"] not in self.item.icmp_blocks:
self.item.icmp_blocks.append(attrs["name"])
else:
log.warning("icmp-block '%s' already set, ignoring.",
attrs["name"])
elif name == "icmp-type":
if self._rule:
if self._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = rich.Rich_IcmpType(attrs["name"])
return
else:
log.warning("Invalid rule: icmp-block '%s' outside of rule",
attrs["name"])
elif name == "masquerade":
if "enabled" in attrs and \
attrs["enabled"].lower() in [ "no", "false" ] :
log.warning("Ignoring deprecated attribute enabled='%s'",
attrs["enabled"])
return
if self._rule:
if self._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = rich.Rich_Masquerade()
else:
if self.item.masquerade:
log.warning("Masquerade already set, ignoring.")
else:
self.item.masquerade = True
elif name == "forward-port":
to_port = ""
if "to-port" in attrs:
to_port = attrs["to-port"]
to_addr = ""
if "to-addr" in attrs:
to_addr = attrs["to-addr"]
if self._rule:
if self._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = rich.Rich_ForwardPort(
attrs["port"], attrs["protocol"], to_port, to_addr)
return
check_port(attrs["port"])
check_tcpudp(attrs["protocol"])
if to_port:
check_port(to_port)
if to_addr:
if not checkIP(to_addr) and not checkIP6(to_addr):
raise FirewallError(errors.INVALID_ADDR,
"to-addr '%s' is not a valid address" \
% to_addr)
entry = (portStr(attrs["port"], "-"), attrs["protocol"],
portStr(to_port, "-"), str(to_addr))
if entry not in self.item.forward_ports:
self.item.forward_ports.append(entry)
else:
log.warning("Forward port %s/%s%s%s already set, ignoring.",
attrs["port"], attrs["protocol"],
" >%s" % to_port if to_port else "",
" @%s" % to_addr if to_addr else "")
elif name == "source-port":
if self._rule:
if self._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = rich.Rich_SourcePort(
attrs["port"], attrs["protocol"])
return
check_port(attrs["port"])
check_tcpudp(attrs["protocol"])
entry = (portStr(attrs["port"], "-"), attrs["protocol"])
if entry not in self.item.source_ports:
self.item.source_ports.append(entry)
else:
log.warning("Source port '%s/%s' already set, ignoring.",
attrs["port"], attrs["protocol"])
elif name == "interface":
if self._rule:
log.warning('Invalid rule: interface use in rule.')
self._rule_error = True
return
# zone bound to interface
if "name" not in attrs:
log.warning('Invalid interface: Name missing.')
self._rule_error = True
return
if attrs["name"] not in self.item.interfaces:
self.item.interfaces.append(attrs["name"])
else:
log.warning("Interface '%s' already set, ignoring.",
attrs["name"])
elif name == "source":
if self._rule:
if self._rule.source:
log.warning(
"Invalid rule: More than one source in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
invert = False
if "invert" in attrs and \
attrs["invert"].lower() in [ "yes", "true" ]:
invert = True
addr = mac = ipset = None
if "address" in attrs:
addr = attrs["address"]
if "mac" in attrs:
mac = attrs["mac"]
if "ipset" in attrs:
ipset = attrs["ipset"]
self._rule.source = rich.Rich_Source(addr,
mac,
ipset,
invert=invert)
return
# zone bound to source
if "address" not in attrs and "ipset" not in attrs:
log.warning('Invalid source: No address no ipset.')
return
if "address" in attrs and "ipset" in attrs:
log.warning('Invalid source: Address and ipset.')
return
if "family" in attrs:
log.warning("Ignoring deprecated attribute family='%s'",
attrs["family"])
if "invert" in attrs:
log.warning('Invalid source: Invertion not allowed here.')
return
if "address" in attrs:
if not checkIPnMask(attrs["address"]) and \
not checkIP6nMask(attrs["address"]) and \
not check_mac(attrs["address"]):
raise FirewallError(errors.INVALID_ADDR, attrs["address"])
if "ipset" in attrs:
entry = "ipset:%s" % attrs["ipset"]
if entry not in self.item.sources:
self.item.sources.append(entry)
else:
log.warning("Source '%s' already set, ignoring.",
attrs["address"])
if "address" in attrs:
entry = attrs["address"]
if entry not in self.item.sources:
self.item.sources.append(entry)
else:
log.warning("Source '%s' already set, ignoring.",
attrs["address"])
elif name == "destination":
if not self._rule:
log.warning('Invalid rule: Destination outside of rule')
self._rule_error = True
return
if self._rule.destination:
log.warning(
"Invalid rule: More than one destination in rule '%s', ignoring.",
str(self._rule))
return
invert = False
if "invert" in attrs and \
attrs["invert"].lower() in [ "yes", "true" ]:
invert = True
self._rule.destination = rich.Rich_Destination(
attrs["address"], invert)
elif name in ["accept", "reject", "drop", "mark"]:
if not self._rule:
log.warning('Invalid rule: Action outside of rule')
self._rule_error = True
return
if self._rule.action:
log.warning('Invalid rule: More than one action')
self._rule_error = True
return
if name == "accept":
self._rule.action = rich.Rich_Accept()
elif name == "reject":
_type = None
if "type" in attrs:
_type = attrs["type"]
self._rule.action = rich.Rich_Reject(_type)
elif name == "drop":
self._rule.action = rich.Rich_Drop()
elif name == "mark":
_set = attrs["set"]
self._rule.action = rich.Rich_Mark(_set)
self._limit_ok = self._rule.action
elif name == "log":
if not self._rule:
log.warning('Invalid rule: Log outside of rule')
return
if self._rule.log:
log.warning('Invalid rule: More than one log')
return
level = None
if "level" in attrs:
level = attrs["level"]
if level not in [
"emerg", "alert", "crit", "error", "warning", "notice",
"info", "debug"
]:
log.warning('Invalid rule: Invalid log level')
self._rule_error = True
return
prefix = attrs["prefix"] if "prefix" in attrs else None
self._rule.log = rich.Rich_Log(prefix, level)
self._limit_ok = self._rule.log
elif name == "audit":
if not self._rule:
log.warning('Invalid rule: Audit outside of rule')
return
if self._rule.audit:
log.warning(
"Invalid rule: More than one audit in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.audit = rich.Rich_Audit()
self._limit_ok = self._rule.audit
elif name == "rule":
family = None
if "family" in attrs:
family = attrs["family"]
if family not in ["ipv4", "ipv6"]:
log.warning('Invalid rule: Rule family "%s" invalid',
attrs["family"])
self._rule_error = True
return
self._rule = rich.Rich_Rule(family)
elif name == "limit":
if not self._limit_ok:
log.warning(
'Invalid rule: Limit outside of action, log and audit')
self._rule_error = True
return
if self._limit_ok.limit:
log.warning(
"Invalid rule: More than one limit in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
value = attrs["value"]
self._limit_ok.limit = rich.Rich_Limit(value)
elif name == "icmp-block-inversion":
if self.item.icmp_block_inversion:
log.warning("Icmp-Block-Inversion already set, ignoring.")
else:
self.item.icmp_block_inversion = True
else:
log.warning("Unknown XML element '%s'", name)
return
def startElement(self, name, attrs):
IO_Object_ContentHandler.startElement(self, name)
if self._rule_error:
return
self.item.parser_check_element_attrs(name, attrs)
if name == "zone":
if "name" in attrs:
log.warning("Ignoring deprecated attribute name='%s'",
attrs["name"])
if "version" in attrs:
self.item.version = attrs["version"]
if "immutable" in attrs:
log.warning("Ignoring deprecated attribute immutable='%s'",
attrs["immutable"])
if "target" in attrs:
target = attrs["target"]
if target not in ZONE_TARGETS:
raise FirewallError(INVALID_TARGET, target)
if target != "" and target != DEFAULT_ZONE_TARGET:
self.item.target = target
elif name == "short":
pass
elif name == "description":
pass
elif name == "service":
if self._rule:
if self._rule.element:
log.warning("Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = Rich_Service(attrs["name"])
return
if attrs["name"] not in self.item.services:
self.item.services.append(attrs["name"])
else:
log.warning("Service '%s' already set, ignoring.",
attrs["name"])
elif name == "port":
if self._rule:
if self._rule.element:
log.warning("Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = Rich_Port(attrs["port"],
attrs["protocol"])
return
entry = (portStr(attrs["port"], "-"), attrs["protocol"])
if entry not in self.item.ports:
self.item.ports.append(entry)
else:
log.warning("Port '%s/%s' already set, ignoring.",
attrs["port"], attrs["protocol"])
elif name == "protocol":
if self._rule:
if self._rule.element:
log.warning("Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = Rich_Protocol(attrs["value"])
else:
if attrs["value"] not in self.item.protocols:
self.item.protocols.append(attrs["value"])
else:
log.warning("Protocol '%s' already set, ignoring.",
attrs["value"])
elif name == "icmp-block":
if self._rule:
if self._rule.element:
log.warning("Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = Rich_IcmpBlock(attrs["name"])
return
if attrs["name"] not in self.item.icmp_blocks:
self.item.icmp_blocks.append(attrs["name"])
else:
log.warning("icmp-block '%s' already set, ignoring.",
attrs["name"])
elif name == "masquerade":
if "enabled" in attrs:
log.warning("Ignoring deprecated attribute enabled='%s'",
attrs["enabled"])
if self._rule:
if self._rule.element:
log.warning("Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = Rich_Masquerade()
else:
if self.item.masquerade:
log.warning("Masquerade already set, ignoring.")
else:
self.item.masquerade = True
elif name == "forward-port":
to_port = ""
if "to-port" in attrs:
to_port = attrs["to-port"]
to_addr = ""
if "to-addr" in attrs:
to_addr = attrs["to-addr"]
if self._rule:
if self._rule.element:
log.warning("Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = Rich_ForwardPort(attrs["port"],
attrs["protocol"],
to_port, to_addr)
return
entry = (portStr(attrs["port"], "-"), attrs["protocol"],
portStr(to_port, "-"), str(to_addr))
if entry not in self.item.forward_ports:
self.item.forward_ports.append(entry)
else:
log.warning("Forward port %s/%s%s%s already set, ignoring.",
attrs["port"], attrs["protocol"],
" >%s" % to_port if to_port else "",
" @%s" % to_addr if to_addr else "")
elif name == "interface":
if self._rule:
log.warning('Invalid rule: interface use in rule.')
self._rule_error = True
return
# zone bound to interface
if "name" not in attrs:
log.warning('Invalid interface: Name missing.')
self._rule_error = True
return
attrs["name"]
if attrs["name"] not in self.item.interfaces:
self.item.interfaces.append(attrs["name"])
else:
log.warning("Interface '%s' already set, ignoring.",
attrs["name"])
elif name == "source":
if self._rule:
if self._rule.source:
log.warning("Invalid rule: More than one source in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
invert = False
if "invert" in attrs and \
attrs["invert"].lower() in [ "yes", "true" ]:
invert = True
addr = mac = ipset = None
if "address" in attrs:
addr = attrs["address"]
if "mac" in attrs:
mac = attrs["mac"]
if "ipset" in attrs:
ipset = attrs["ipset"]
self._rule.source = Rich_Source(addr, mac, ipset, invert=invert)
return
# zone bound to source
if "address" not in attrs and not "ipset" in attrs:
log.warning('Invalid source: No address no ipset.')
return
if "address" in attrs and "ipset" in attrs:
log.warning('Invalid source: Address and ipset.')
return
if "family" in attrs:
log.warning("Ignoring deprecated attribute family='%s'",
attrs["family"])
if "invert" in attrs:
log.warning('Invalid source: Invertion not allowed here.')
return
if "ipset" in attrs:
entry = "ipset:%s" % attrs["ipset"]
if entry not in self.item.sources:
self.item.sources.append(entry)
else:
log.warning("Source '%s' already set, ignoring.",
attrs["address"])
if "address" in attrs:
entry = attrs["address"]
if entry not in self.item.sources:
self.item.sources.append(entry)
else:
log.warning("Source '%s' already set, ignoring.",
attrs["address"])
elif name == "destination":
if not self._rule:
log.warning('Invalid rule: Destination outside of rule')
self._rule_error = True
return
if self._rule.destination:
log.warning("Invalid rule: More than one destination in rule '%s', ignoring.",
str(self._rule))
return
invert = False
if "invert" in attrs and \
attrs["invert"].lower() in [ "yes", "true" ]:
invert = True
self._rule.destination = Rich_Destination(attrs["address"],
invert)
elif name in [ "accept", "reject", "drop" ]:
if not self._rule:
log.warning('Invalid rule: Action outside of rule')
self._rule_error = True
return
if self._rule.action:
log.warning('Invalid rule: More than one action')
self._rule_error = True
return
if name == "accept":
self._rule.action = Rich_Accept()
if name == "reject":
_type = None
if "type" in attrs:
_type = attrs["type"]
self._rule.action = Rich_Reject(_type)
if name == "drop":
self._rule.action = Rich_Drop()
self._limit_ok = self._rule.action
elif name == "log":
if not self._rule:
log.warning('Invalid rule: Log outside of rule')
return
if self._rule.log:
log.warning('Invalid rule: More than one log')
return
level = None
if "level" in attrs:
level = attrs["level"]
if level not in [ "emerg", "alert", "crit", "error",
"warning", "notice", "info", "debug" ]:
log.warning('Invalid rule: Invalid log level')
self._rule_error = True
return
prefix = attrs["prefix"] if "prefix" in attrs else None
self._rule.log = Rich_Log(prefix, level)
self._limit_ok = self._rule.log
elif name == "audit":
if not self._rule:
log.warning('Invalid rule: Audit outside of rule')
return
if self._rule.audit:
log.warning("Invalid rule: More than one audit in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.audit = Rich_Audit()
self._limit_ok = self._rule.audit
elif name == "rule":
family = None
if "family" in attrs:
family = attrs["family"]
if family not in [ "ipv4", "ipv6" ]:
log.warning('Invalid rule: Rule family "%s" invalid',
attrs["family"])
self._rule_error = True
return
self._rule = Rich_Rule(family)
elif name == "limit":
if not self._limit_ok:
log.warning('Invalid rule: Limit outside of action, log and audit')
self._rule_error = True
return
if self._limit_ok.limit:
log.warning("Invalid rule: More than one limit in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
value = attrs["value"]
self._limit_ok.limit = Rich_Limit(value)
else:
log.warning("Unknown XML element '%s'", name)
return
def startElement(self, name, attrs):
IO_Object_ContentHandler.startElement(self, name, attrs)
if self._rule_error:
return
self.item.parser_check_element_attrs(name, attrs)
if name == "policy":
if "version" in attrs:
self.item.version = attrs["version"]
if "priority" in attrs:
self.item.priority = int(attrs["priority"])
target = attrs["target"]
if target not in POLICY_TARGETS:
raise FirewallError(errors.INVALID_TARGET, target)
elif name == "short":
pass
elif name == "description":
pass
elif name == "service":
if self._rule:
if self._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = rich.Rich_Service(attrs["name"])
return
if attrs["name"] not in self.item.services:
self.item.services.append(attrs["name"])
else:
log.warning("Service '%s' already set, ignoring.",
attrs["name"])
elif name == "ingress-zone":
if attrs["name"] not in self.item.ingress_zones:
self.item.ingress_zones.append(attrs["name"])
else:
log.warning("Ingress zone '%s' already set, ignoring.",
attrs["name"])
elif name == "egress-zone":
if attrs["name"] not in self.item.egress_zones:
self.item.egress_zones.append(attrs["name"])
else:
log.warning("Egress zone '%s' already set, ignoring.",
attrs["name"])
elif name == "port":
if self._rule:
if self._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = rich.Rich_Port(attrs["port"],
attrs["protocol"])
return
check_port(attrs["port"])
check_tcpudp(attrs["protocol"])
entry = (portStr(attrs["port"], "-"), attrs["protocol"])
if entry not in self.item.ports:
self.item.ports.append(entry)
else:
log.warning("Port '%s/%s' already set, ignoring.",
attrs["port"], attrs["protocol"])
elif name == "protocol":
if self._rule:
if self._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = rich.Rich_Protocol(attrs["value"])
else:
check_protocol(attrs["value"])
if attrs["value"] not in self.item.protocols:
self.item.protocols.append(attrs["value"])
else:
log.warning("Protocol '%s' already set, ignoring.",
attrs["value"])
elif name == "icmp-block":
if self._rule:
if self._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = rich.Rich_IcmpBlock(attrs["name"])
return
if attrs["name"] not in self.item.icmp_blocks:
self.item.icmp_blocks.append(attrs["name"])
else:
log.warning("icmp-block '%s' already set, ignoring.",
attrs["name"])
elif name == "icmp-type":
if self._rule:
if self._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = rich.Rich_IcmpType(attrs["name"])
return
else:
log.warning("Invalid rule: icmp-block '%s' outside of rule",
attrs["name"])
elif name == "masquerade":
if self._rule:
if self._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = rich.Rich_Masquerade()
else:
if self.item.masquerade:
log.warning("Masquerade already set, ignoring.")
else:
self.item.masquerade = True
elif name == "forward-port":
to_port = ""
if "to-port" in attrs:
to_port = attrs["to-port"]
to_addr = ""
if "to-addr" in attrs:
to_addr = attrs["to-addr"]
if self._rule:
if self._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = rich.Rich_ForwardPort(
attrs["port"], attrs["protocol"], to_port, to_addr)
return
check_port(attrs["port"])
check_tcpudp(attrs["protocol"])
if to_port:
check_port(to_port)
if to_addr:
if not checkIP(to_addr) and not checkIP6(to_addr):
raise FirewallError(errors.INVALID_ADDR,
"to-addr '%s' is not a valid address" \
% to_addr)
entry = (portStr(attrs["port"], "-"), attrs["protocol"],
portStr(to_port, "-"), str(to_addr))
if entry not in self.item.forward_ports:
self.item.forward_ports.append(entry)
else:
log.warning("Forward port %s/%s%s%s already set, ignoring.",
attrs["port"], attrs["protocol"],
" >%s" % to_port if to_port else "",
" @%s" % to_addr if to_addr else "")
elif name == "source-port":
if self._rule:
if self._rule.element:
log.warning(
"Invalid rule: More than one element in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.element = rich.Rich_SourcePort(
attrs["port"], attrs["protocol"])
return
check_port(attrs["port"])
check_tcpudp(attrs["protocol"])
entry = (portStr(attrs["port"], "-"), attrs["protocol"])
if entry not in self.item.source_ports:
self.item.source_ports.append(entry)
else:
log.warning("Source port '%s/%s' already set, ignoring.",
attrs["port"], attrs["protocol"])
elif name == "destination":
if not self._rule:
log.warning('Invalid rule: Destination outside of rule')
self._rule_error = True
return
if self._rule.destination:
log.warning(
"Invalid rule: More than one destination in rule '%s', ignoring.",
str(self._rule))
return
invert = False
if "invert" in attrs and \
attrs["invert"].lower() in [ "yes", "true" ]:
invert = True
self._rule.destination = rich.Rich_Destination(
attrs["address"], invert)
elif name in ["accept", "reject", "drop", "mark"]:
if not self._rule:
log.warning('Invalid rule: Action outside of rule')
self._rule_error = True
return
if self._rule.action:
log.warning('Invalid rule: More than one action')
self._rule_error = True
return
if name == "accept":
self._rule.action = rich.Rich_Accept()
elif name == "reject":
_type = None
if "type" in attrs:
_type = attrs["type"]
self._rule.action = rich.Rich_Reject(_type)
elif name == "drop":
self._rule.action = rich.Rich_Drop()
elif name == "mark":
_set = attrs["set"]
self._rule.action = rich.Rich_Mark(_set)
self._limit_ok = self._rule.action
elif name == "log":
if not self._rule:
log.warning('Invalid rule: Log outside of rule')
return
if self._rule.log:
log.warning('Invalid rule: More than one log')
return
level = None
if "level" in attrs:
level = attrs["level"]
if level not in [
"emerg", "alert", "crit", "error", "warning", "notice",
"info", "debug"
]:
log.warning('Invalid rule: Invalid log level')
self._rule_error = True
return
prefix = attrs["prefix"] if "prefix" in attrs else None
self._rule.log = rich.Rich_Log(prefix, level)
self._limit_ok = self._rule.log
elif name == "audit":
if not self._rule:
log.warning('Invalid rule: Audit outside of rule')
return
if self._rule.audit:
log.warning(
"Invalid rule: More than one audit in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
self._rule.audit = rich.Rich_Audit()
self._limit_ok = self._rule.audit
elif name == "rule":
family = None
priority = 0
if "family" in attrs:
family = attrs["family"]
if family not in ["ipv4", "ipv6"]:
log.warning('Invalid rule: Rule family "%s" invalid',
attrs["family"])
self._rule_error = True
return
if "priority" in attrs:
priority = int(attrs["priority"])
self._rule = rich.Rich_Rule(family=family, priority=priority)
elif name == "limit":
if not self._limit_ok:
log.warning(
'Invalid rule: Limit outside of action, log and audit')
self._rule_error = True
return
if self._limit_ok.limit:
log.warning(
"Invalid rule: More than one limit in rule '%s', ignoring.",
str(self._rule))
self._rule_error = True
return
value = attrs["value"]
self._limit_ok.limit = rich.Rich_Limit(value)
else:
log.warning("Unknown XML element '%s'", name)
return
