def startElement(self, name, attrs):
IO_Object_ContentHandler.startElement(self, name, attrs)
self.item.parser_check_element_attrs(name, attrs)
if name == "helper":
if "version" in attrs:
self.item.version = attrs["version"]
if "family" in attrs:
self.item.check_ipv(attrs["family"])
self.item.family = attrs["family"]
if "module" in attrs:
if not attrs["module"].startswith("nf_conntrack_"):
raise FirewallError(
errors.INVALID_MODULE,
"'%s' does not start with 'nf_conntrack_'" % \
attrs["module"])
if len(attrs["module"].replace("nf_conntrack_", "")) < 1:
raise FirewallError(
errors.INVALID_MODULE,
"Module name '%s' too short" % attrs["module"])
self.item.module = attrs["module"]
elif name == "short":
pass
elif name == "description":
pass
elif name == "port":
check_port(attrs["port"])
check_tcpudp(attrs["protocol"])
entry = (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"])
def _check_config(self, config, item):
if item == "ports":
for port in config:
if port[0] != "":
check_port(port[0])
check_tcpudp(port[1])
else:
# only protocol
check_protocol(port[1])
elif item == "protocols":
for proto in config:
check_protocol(proto)
elif item == "source_ports":
for port in config:
check_port(port[0])
check_tcpudp(port[1])
elif item == "destination":
for destination in config:
if destination not in [ "ipv4", "ipv6" ]:
raise FirewallError(errors.INVALID_DESTINATION,
"'%s' not in {'ipv4'|'ipv6'}" % \
destination)
check_address(destination, config[destination])
elif item == "modules":
for module in config:
if not module.startswith("nf_conntrack_"):
raise FirewallError(errors.INVALID_MODULE, module)
elif len(module.replace("nf_conntrack_", "")) < 1:
raise FirewallError(errors.INVALID_MODULE, module)
def _check_config(self, config, item, all_config):
if item == "ports":
for port in config:
if port[0] != "":
check_port(port[0])
check_tcpudp(port[1])
else:
# only protocol
check_protocol(port[1])
elif item == "protocols":
for proto in config:
check_protocol(proto)
elif item == "source_ports":
for port in config:
check_port(port[0])
check_tcpudp(port[1])
elif item == "destination":
for destination in config:
if destination not in ["ipv4", "ipv6"]:
raise FirewallError(errors.INVALID_DESTINATION,
"'%s' not in {'ipv4'|'ipv6'}" % \
destination)
check_address(destination, config[destination])
elif item == "modules":
for module in config:
if module.startswith("nf_conntrack_"):
module = module.replace("nf_conntrack_", "")
if "_" in module:
module = module.replace("_", "-")
if len(module) < 2:
raise FirewallError(errors.INVALID_MODULE, module)
def startElement(self, name, attrs):
IO_Object_ContentHandler.startElement(self, name, attrs)
self.item.parser_check_element_attrs(name, attrs)
if name == "helper":
if "version" in attrs:
self.item.version = attrs["version"]
if "family" in attrs:
self.item.check_ipv(attrs["family"])
self.item.family = attrs["family"]
if "module" in attrs:
if not attrs["module"].startswith("nf_conntrack_"):
raise FirewallError(
errors.INVALID_MODULE,
"'%s' does not start with 'nf_conntrack_'" % \
attrs["module"])
if len(attrs["module"].replace("nf_conntrack_", "")) < 1:
raise FirewallError(
errors.INVALID_MODULE,
"Module name '%s' too short" % attrs["module"])
self.item.module = attrs["module"]
elif name == "short":
pass
elif name == "description":
pass
elif name == "port":
check_port(attrs["port"])
check_tcpudp(attrs["protocol"])
entry = (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"])
def _check_config(self, config, item, all_config, all_io_objects):
if item == "ports":
for port in config:
check_port(port[0])
check_tcpudp(port[1])
elif item == "module":
if not config.startswith("nf_conntrack_"):
raise FirewallError(
errors.INVALID_MODULE,
"'%s' does not start with 'nf_conntrack_'" % config)
if len(config.replace("nf_conntrack_", "")) < 1:
raise FirewallError(errors.INVALID_MODULE,
"Module name '%s' too short" % config)
def _check_config(self, config, item):
if item == "ports":
for port in config:
check_port(port[0])
check_tcpudp(port[1])
elif item == "module":
if not config.startswith("nf_conntrack_"):
raise FirewallError(
errors.INVALID_MODULE,
"'%s' does not start with 'nf_conntrack_'" % config)
if len(config.replace("nf_conntrack_", "")) < 1:
raise FirewallError(errors.INVALID_MODULE,
"Module name '%s' too short" % config)
def common_check_config(obj, config, item, all_config):
if item == "services" and obj.fw_config:
existing_services = obj.fw_config.get_services()
for service in config:
if service not in existing_services:
raise FirewallError(errors.INVALID_SERVICE,
"'%s' not among existing services" % \
service)
elif item == "ports":
for port in config:
check_port(port[0])
check_tcpudp(port[1])
elif item == "protocols":
for proto in config:
check_protocol(proto)
elif item == "icmp_blocks" and obj.fw_config:
existing_icmptypes = obj.fw_config.get_icmptypes()
for icmptype in config:
if icmptype not in existing_icmptypes:
raise FirewallError(errors.INVALID_ICMPTYPE,
"'%s' not among existing icmp types" % \
icmptype)
elif item == "forward_ports":
for fwd_port in config:
check_port(fwd_port[0])
check_tcpudp(fwd_port[1])
if not fwd_port[2] and not fwd_port[3]:
raise FirewallError(
errors.INVALID_FORWARD,
"'%s' is missing to-port AND to-addr " % fwd_port)
if fwd_port[2]:
check_port(fwd_port[2])
if fwd_port[3]:
if not checkIP(fwd_port[3]) and not checkIP6(fwd_port[3]):
raise FirewallError(
errors.INVALID_ADDR,
"to-addr '%s' is not a valid address" % fwd_port[3])
elif item == "source_ports":
for port in config:
check_port(port[0])
check_tcpudp(port[1])
elif item in ["rules_str", "rich_rules"]:
for rule in config:
obj_rich = rich.Rich_Rule(rule_str=rule)
if obj.fw_config and obj_rich.element and (
isinstance(obj_rich.element, rich.Rich_IcmpBlock)
or isinstance(obj_rich.element, rich.Rich_IcmpType)):
existing_icmptypes = obj.fw_config.get_icmptypes()
if obj_rich.element.name not in existing_icmptypes:
raise FirewallError(errors.INVALID_ICMPTYPE,
"'%s' not among existing icmp types" % \
obj_rich.element.name)
elif obj_rich.family:
ict = obj.fw_config.get_icmptype(obj_rich.element.name)
if ict.destination and obj_rich.family not in ict.destination:
raise FirewallError(errors.INVALID_ICMPTYPE,
"rich rule family '%s' conflicts with icmp type '%s'" % \
(obj_rich.family, obj_rich.element.name))
def _check_config(self, config, item):
if item == "services" and self.fw_config:
existing_services = self.fw_config.get_services()
for service in config:
if service not in existing_services:
raise FirewallError(errors.INVALID_SERVICE,
"'%s' not among existing services" % \
service)
elif item == "ports":
for port in config:
check_port(port[0])
check_tcpudp(port[1])
elif item == "protocols":
for proto in config:
check_protocol(proto)
elif item == "icmp_blocks" and self.fw_config:
existing_icmptypes = self.fw_config.get_icmptypes()
for icmptype in config:
if icmptype not in existing_icmptypes:
raise FirewallError(errors.INVALID_ICMPTYPE,
"'%s' not among existing icmp types" % \
icmptype)
elif item == "forward_ports":
for fwd_port in config:
check_port(fwd_port[0])
check_tcpudp(fwd_port[1])
if not fwd_port[2] and not fwd_port[3]:
raise FirewallError(
errors.INVALID_FORWARD,
"'%s' is missing to-port AND to-addr " % fwd_port)
if fwd_port[2]:
check_port(fwd_port[2])
if fwd_port[3]:
if not checkIP(fwd_port[3]) and not checkIP6(fwd_port[3]):
raise FirewallError(
errors.INVALID_ADDR,
"to-addr '%s' is not a valid address" %
fwd_port[3])
elif item == "source_ports":
for port in config:
check_port(port[0])
check_tcpudp(port[1])
elif item == "target":
if config not in ZONE_TARGETS:
raise FirewallError(errors.INVALID_TARGET, config)
elif item == "interfaces":
for interface in config:
if not checkInterface(interface):
raise FirewallError(errors.INVALID_INTERFACE, interface)
elif item == "sources":
for source in config:
if not checkIPnMask(source) and not checkIP6nMask(source) and \
not check_mac(source) and not source.startswith("ipset:"):
raise FirewallError(errors.INVALID_ADDR, source)
elif item == "rules_str":
for rule in config:
rich.Rich_Rule(rule_str=rule)
def _check_config(self, config, item):
if item == "services" and self.fw_config:
existing_services = self.fw_config.get_services()
for service in config:
if not service in existing_services:
raise FirewallError(errors.INVALID_SERVICE,
"'%s' not among existing services" % \
service)
elif item == "ports":
for port in config:
check_port(port[0])
check_tcpudp(port[1])
elif item == "protocols":
for proto in config:
check_protocol(proto)
elif item == "icmp_blocks" and self.fw_config:
existing_icmptypes = self.fw_config.get_icmptypes()
for icmptype in config:
if not icmptype in existing_icmptypes:
raise FirewallError(errors.INVALID_ICMPTYPE,
"'%s' not among existing icmp types" % \
icmptype)
elif item == "forward_ports":
for fwd_port in config:
check_port(fwd_port[0])
check_tcpudp(fwd_port[1])
if not fwd_port[2] and not fwd_port[3]:
raise FirewallError(
errors.INVALID_FORWARD,
"'%s' is missing to-port AND to-addr " % fwd_port)
if fwd_port[2]:
check_port(fwd_port[2])
if fwd_port[3]:
if not checkIP(fwd_port[3]):
raise FirewallError(
errors.INVALID_ADDR,
"to-addr '%s' is not a valid address" % fwd_port[3])
elif item == "source_ports":
for port in config:
check_port(port[0])
check_tcpudp(port[1])
elif item == "target":
if config not in ZONE_TARGETS:
raise FirewallError(errors.INVALID_TARGET, config)
elif item == "interfaces":
for interface in config:
if not checkInterface(interface):
raise FirewallError(errors.INVALID_INTERFACE, interface)
elif item == "sources":
for source in config:
if not checkIPnMask(source) and not checkIP6nMask(source) and \
not check_mac(source) and not source.startswith("ipset:"):
raise FirewallError(errors.INVALID_ADDR, source)
elif item == "rules_str":
for rule in config:
Rich_Rule(rule_str=rule)
def _check_config(self, config, item):
if item == "services" and self.fw_config:
existing_services = self.fw_config.get_services()
for service in config:
if service not in existing_services:
raise FirewallError(errors.INVALID_SERVICE,
"'%s' not among existing services" % \
service)
elif item == "ports":
for port in config:
check_port(port[0])
check_tcpudp(port[1])
elif item == "protocols":
for proto in config:
check_protocol(proto)
elif item == "icmp_blocks" and self.fw_config:
existing_icmptypes = self.fw_config.get_icmptypes()
for icmptype in config:
if icmptype not in existing_icmptypes:
raise FirewallError(errors.INVALID_ICMPTYPE,
"'%s' not among existing icmp types" % \
icmptype)
elif item == "forward_ports":
for fwd_port in config:
check_port(fwd_port[0])
check_tcpudp(fwd_port[1])
if not fwd_port[2] and not fwd_port[3]:
raise FirewallError(
errors.INVALID_FORWARD,
"'%s' is missing to-port AND to-addr " % fwd_port)
if fwd_port[2]:
check_port(fwd_port[2])
if fwd_port[3]:
if not checkIP(fwd_port[3]) and not checkIP6(fwd_port[3]):
raise FirewallError(
errors.INVALID_ADDR,
"to-addr '%s' is not a valid address" %
fwd_port[3])
elif item == "source_ports":
for port in config:
check_port(port[0])
check_tcpudp(port[1])
elif item == "target":
if config not in POLICY_TARGETS:
raise FirewallError(errors.INVALID_TARGET, config)
elif item == "rules_str":
for rule in config:
rich.Rich_Rule(rule_str=rule)
elif item in ["ingress-zone", "egress-zone"] and self.fw_config:
existing_zones = self.fw_config.get_zones()
for zone in config:
if zone not in existing_zones:
raise FirewallError(errors.INVALID_SERVICE,
"'%s' not among existing zones" % zone)
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, attrs)
self.item.parser_check_element_attrs(name, attrs)
if name == "service":
if "name" in attrs:
log.warning("Ignoring deprecated attribute name='%s'",
attrs["name"])
if "version" in attrs:
self.item.version = attrs["version"]
elif name == "short":
pass
elif name == "description":
pass
elif name == "port":
if attrs["port"] != "":
check_port(attrs["port"])
check_tcpudp(attrs["protocol"])
entry = (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"])
else:
check_protocol(attrs["protocol"])
if attrs["protocol"] not in self.item.protocols:
self.item.protocols.append(attrs["protocol"])
else:
log.warning("Protocol '%s' already set, ignoring.",
attrs["protocol"])
elif name == "protocol":
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 == "source-port":
check_port(attrs["port"])
check_tcpudp(attrs["protocol"])
entry = (attrs["port"], attrs["protocol"])
if entry not in self.item.source_ports:
self.item.source_ports.append(entry)
else:
log.warning("SourcePort '%s/%s' already set, ignoring.",
attrs["port"], attrs["protocol"])
elif name == "destination":
for x in ["ipv4", "ipv6"]:
if x in attrs:
check_address(x, attrs[x])
if x in self.item.destination:
log.warning(
"Destination address for '%s' already set, ignoring",
x)
else:
self.item.destination[x] = attrs[x]
elif name == "module":
module = attrs["name"]
if module.startswith("nf_conntrack_"):
module = module.replace("nf_conntrack_", "")
if "_" in module:
module = module.replace("_", "-")
if module not in self.item.modules:
self.item.modules.append(module)
else:
log.warning("Module '%s' already set, ignoring.", module)
elif name == "include":
if attrs["service"] not in self.item.includes:
self.item.includes.append(attrs["service"])
else:
log.warning("Include '%s' already set, ignoring.",
attrs["service"])
elif name == "helper":
if attrs["name"] not in self.item.helpers:
self.item.helpers.append(attrs["name"])
else:
log.warning("Helper '%s' already set, ignoring.",
attrs["name"])
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
def startElement(self, name, attrs):
IO_Object_ContentHandler.startElement(self, name, attrs)
self.item.parser_check_element_attrs(name, attrs)
if name == "service":
if "name" in attrs:
log.warning("Ignoring deprecated attribute name='%s'",
attrs["name"])
if "version" in attrs:
self.item.version = attrs["version"]
elif name == "short":
pass
elif name == "description":
pass
elif name == "port":
if attrs["port"] != "":
check_port(attrs["port"])
check_tcpudp(attrs["protocol"])
entry = (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"])
else:
check_protocol(attrs["protocol"])
if attrs["protocol"] not in self.item.protocols:
self.item.protocols.append(attrs["protocol"])
else:
log.warning("Protocol '%s' already set, ignoring.",
attrs["protocol"])
elif name == "protocol":
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 == "source-port":
check_port(attrs["port"])
check_tcpudp(attrs["protocol"])
entry = (attrs["port"], attrs["protocol"])
if entry not in self.item.source_ports:
self.item.source_ports.append(entry)
else:
log.warning("SourcePort '%s/%s' already set, ignoring.",
attrs["port"], attrs["protocol"])
elif name == "destination":
for x in [ "ipv4", "ipv6" ]:
if x in attrs:
check_address(x, attrs[x])
if x in self.item.destination:
log.warning("Destination address for '%s' already set, ignoring",
x)
else:
self.item.destination[x] = attrs[x]
elif name == "module":
if attrs["name"].startswith("nf_conntrack_") and \
len(attrs["name"].replace("nf_conntrack_", "")) > 0:
if attrs["name"] not in self.item.modules:
self.item.modules.append(attrs["name"])
else:
log.warning("Module '%s' already set, ignoring.",
attrs["name"])
else:
log.warning("Invalid module '%s'", attrs["name"])
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_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
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_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_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 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_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
check_port(attrs["port"])
check_tcpudp(attrs["protocol"])
if to_port:
check_port(to_port)
if to_addr:
if not checkIP(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_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_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 "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_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_Accept()
elif name == "reject":
_type = None
if "type" in attrs:
_type = attrs["type"]
self._rule.action = Rich_Reject(_type)
elif name == "drop":
self._rule.action = Rich_Drop()
elif name == "mark":
_set = attrs["set"]
self._rule.action = 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_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)
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 common_check_config(obj, config, item, all_config, all_io_objects):
obj_type = "Policy" if isinstance(obj, Policy) else "Zone"
if item == "services" and "services" in all_io_objects:
existing_services = all_io_objects["services"]
for service in config:
if service not in existing_services:
raise FirewallError(errors.INVALID_SERVICE,
"{} '{}': '{}' not among existing services".format(
obj_type, obj.name, service))
elif item == "ports":
for port in config:
check_port(port[0])
check_tcpudp(port[1])
elif item == "protocols":
for proto in config:
check_protocol(proto)
elif item == "icmp_blocks" and "icmptypes" in all_io_objects:
existing_icmptypes = all_io_objects["icmptypes"]
for icmptype in config:
if icmptype not in existing_icmptypes:
ex = FirewallError(errors.INVALID_ICMPTYPE,
"{} '{}': '{}' not among existing ICMP types".format(
obj_type, obj.name, icmptype))
if icmptype in all_io_objects.get("icmptypes_unsupported", {}):
log.debug1("{} (unsupported)".format(ex))
else:
raise ex
elif item == "forward_ports":
for fwd_port in config:
check_port(fwd_port[0])
check_tcpudp(fwd_port[1])
if not fwd_port[2] and not fwd_port[3]:
raise FirewallError(errors.INVALID_FORWARD,
"{} '{}': '{}' is missing to-port AND to-addr ".format(
obj_type, obj.name, fwd_port))
if fwd_port[2]:
check_port(fwd_port[2])
if fwd_port[3]:
if not checkIP(fwd_port[3]) and not checkIP6(fwd_port[3]):
raise FirewallError(errors.INVALID_ADDR,
"{} '{}': to-addr '{}' is not a valid address".format(
obj_type, obj.name, fwd_port[3]))
elif item == "source_ports":
for port in config:
check_port(port[0])
check_tcpudp(port[1])
elif item in ["rules_str", "rich_rules"]:
for rule in config:
obj_rich = rich.Rich_Rule(rule_str=rule)
if obj_rich.element and "icmptypes" in all_io_objects and \
(isinstance(obj_rich.element, rich.Rich_IcmpBlock) or
isinstance(obj_rich.element, rich.Rich_IcmpType)):
existing_icmptypes = all_io_objects["icmptypes"]
if obj_rich.element.name not in existing_icmptypes:
ex = FirewallError(errors.INVALID_ICMPTYPE,
"{} '{}': '{}' not among existing ICMP types".format(
obj_type, obj.name, obj_rich.element.name))
if obj_rich.element.name in all_io_objects.get("icmptypes_unsupported", {}):
log.debug1("{} (unsupported)".format(ex))
else:
raise ex
elif obj_rich.family:
ict = all_io_objects["icmptypes"][obj_rich.element.name]
if ict.destination and obj_rich.family not in ict.destination:
ex = FirewallError(errors.INVALID_ICMPTYPE,
"{} '{}': rich rule family '{}' conflicts with icmp type '{}'".format(
obj_type, obj.name, obj_rich.family, obj_rich.element.name))
ict_unsupported = all_io_objects.get("icmptypes_unsupported", {}).get(obj_rich.element.name)
if ict_unsupported and ict_unsupported.destination and \
obj_rich.family in ict_unsupported.destination:
log.debug1("{} (unsupported)".format(ex))
else:
raise ex
