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 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 startElement(self, name, attrs):
IO_Object_ContentHandler.startElement(self, name, attrs)
self.item.parser_check_element_attrs(name, attrs)
if name == "ipset":
if "type" in attrs:
if attrs["type"] not in IPSET_TYPES:
raise FirewallError(errors.INVALID_TYPE, "%s" % attrs["type"])
self.item.type = attrs["type"]
if "version" in attrs:
self.item.version = attrs["version"]
elif name == "short":
pass
elif name == "description":
pass
elif name == "option":
value = ""
if "value" in attrs:
value = attrs["value"]
if attrs["name"] not in \
[ "family", "timeout", "hashsize", "maxelem" ]:
raise FirewallError(
errors.INVALID_OPTION,
"Unknown option '%s'" % attrs["name"])
if self.item.type == "hash:mac" and attrs["name"] in [ "family" ]:
raise FirewallError(
errors.INVALID_OPTION,
"Unsupported option '%s' for type '%s'" % \
(attrs["name"], self.item.type))
if attrs["name"] in [ "family", "timeout", "hashsize", "maxelem" ] \
and not value:
raise FirewallError(
errors.INVALID_OPTION,
"Missing mandatory value of option '%s'" % attrs["name"])
if attrs["name"] in [ "timeout", "hashsize", "maxelem" ]:
try:
int_value = int(value)
except ValueError:
raise FirewallError(
errors.INVALID_VALUE,
"Option '%s': Value '%s' is not an integer" % \
(attrs["name"], value))
if int_value < 0:
raise FirewallError(
errors.INVALID_VALUE,
"Option '%s': Value '%s' is negative" % \
(attrs["name"], value))
if attrs["name"] == "family" and value not in [ "inet", "inet6" ]:
raise FirewallError(errors.INVALID_FAMILY, value)
if attrs["name"] not in self.item.options:
self.item.options[attrs["name"]] = value
else:
log.warning("Option %s already set, ignoring.", attrs["name"])
def startElement(self, name, attrs):
IO_Object_ContentHandler.startElement(self, name, attrs)
self.item.parser_check_element_attrs(name, attrs)
if name == "direct":
if self.direct:
raise FirewallError(errors.PARSE_ERROR,
"More than one direct tag.")
self.direct = True
elif name == "chain":
if not self.direct:
log.error("Parse Error: chain outside of direct")
return
ipv = attrs["ipv"]
table = attrs["table"]
chain = attrs["chain"]
self.item.add_chain(u2b_if_py2(ipv), u2b_if_py2(table),
u2b_if_py2(chain))
elif name == "rule":
if not self.direct:
log.error("Parse Error: rule outside of direct")
return
ipv = attrs["ipv"]
if ipv not in ["ipv4", "ipv6", "eb"]:
raise FirewallError(errors.INVALID_IPV,
"'%s' not from {'ipv4'|'ipv6'|'eb'}" % ipv)
table = attrs["table"]
chain = attrs["chain"]
try:
priority = int(attrs["priority"])
except ValueError:
log.error("Parse Error: %s is not a valid priority" %
attrs["priority"])
return
self._rule = [
u2b_if_py2(ipv),
u2b_if_py2(table),
u2b_if_py2(chain), priority
]
elif name == "passthrough":
if not self.direct:
log.error("Parse Error: command outside of direct")
return
ipv = attrs["ipv"]
self._passthrough = [u2b_if_py2(ipv)]
else:
log.error('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 == "ipset":
if "type" in attrs:
self.item.type = attrs["type"]
if "version" in attrs:
self.item.version = attrs["version"]
elif name == "short":
pass
elif name == "description":
pass
elif name == "option":
value = ""
if "value" in attrs:
value = attrs["value"]
if attrs["name"] not in \
[ "family", "timeout", "hashsize", "maxelem" ]:
raise FirewallError(
errors.INVALID_OPTION,
"Unknown option '%s'" % attrs["name"])
if self.item.type == "hash:mac" and attrs["name"] in [ "family" ]:
raise FirewallError(
errors.INVALID_OPTION,
"Unsupported option '%s' for type '%s'" % \
(attrs["name"], self.item.type))
if attrs["name"] in [ "family", "timeout", "hashsize", "maxelem" ] \
and not value:
raise FirewallError(
errors.INVALID_OPTION,
"Missing mandatory value of option '%s'" % attrs["name"])
if attrs["name"] in [ "timeout", "hashsize", "maxelem" ]:
try:
int_value = int(value)
except ValueError:
raise FirewallError(
errors.INVALID_VALUE,
"Option '%s': Value '%s' is not an integer" % \
(attrs["name"], value))
if int_value < 0:
raise FirewallError(
errors.INVALID_VALUE,
"Option '%s': Value '%s' is negative" % \
(attrs["name"], value))
if attrs["name"] == "family" and value not in [ "inet", "inet6" ]:
raise FirewallError(errors.INVALID_FAMILY, value)
if attrs["name"] not in self.item.options:
self.item.options[attrs["name"]] = value
else:
log.warning("Option %s already set, ignoring.", attrs["name"])
def startElement(self, name, attrs):
IO_Object_ContentHandler.startElement(self, name, attrs)
self.item.parser_check_element_attrs(name, attrs)
if name == "direct":
if self.direct:
raise FirewallError(errors.PARSE_ERROR,
"More than one direct tag.")
self.direct = True
elif name == "chain":
if not self.direct:
log.error("Parse Error: chain outside of direct")
return
ipv = attrs["ipv"]
table = attrs["table"]
chain = attrs["chain"]
self.item.add_chain(u2b_if_py2(ipv), u2b_if_py2(table),
u2b_if_py2(chain))
elif name == "rule":
if not self.direct:
log.error("Parse Error: rule outside of direct")
return
ipv = attrs["ipv"]
if ipv not in [ "ipv4", "ipv6", "eb" ]:
raise FirewallError(errors.INVALID_IPV,
"'%s' not from {'ipv4'|'ipv6'|'eb'}" % ipv)
table = attrs["table"]
chain = attrs["chain"]
try:
priority = int(attrs["priority"])
except ValueError:
log.error("Parse Error: %s is not a valid priority" %
attrs["priority"])
return
self._rule = [ u2b_if_py2(ipv), u2b_if_py2(table),
u2b_if_py2(chain), priority ]
elif name == "passthrough":
if not self.direct:
log.error("Parse Error: command outside of direct")
return
ipv = attrs["ipv"]
self._passthrough = [ u2b_if_py2(ipv) ]
else:
log.error('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 == "icmptype":
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 == "destination":
for x in ["ipv4", "ipv6"]:
if x in attrs and attrs[x].lower() in ["yes", "true"]:
self.item.destination.append(str(x))
def startElement(self, name, attrs):
IO_Object_ContentHandler.startElement(self, name, attrs)
self.item.parser_check_element_attrs(name, attrs)
if name == "whitelist":
if self.whitelist:
raise FirewallError(errors.PARSE_ERROR,
"More than one whitelist.")
self.whitelist = True
elif name == "command":
if not self.whitelist:
log.error("Parse Error: command outside of whitelist")
return
command = attrs["name"]
self.item.add_command(command)
elif name == "user":
if not self.whitelist:
log.error("Parse Error: user outside of whitelist")
return
if "id" in attrs:
try:
uid = int(attrs["id"])
except ValueError:
log.error("Parse Error: %s is not a valid uid" %
attrs["id"])
return
self.item.add_uid(uid)
elif "name" in attrs:
self.item.add_user(attrs["name"])
elif name == "selinux":
if not self.whitelist:
log.error("Parse Error: selinux outside of whitelist")
return
if "context" not in attrs:
log.error("Parse Error: no context")
return
self.item.add_context(attrs["context"])
else:
log.error('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 == "icmptype":
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 == "destination":
for x in ["ipv4", "ipv6"]:
if x in attrs and \
attrs[x].lower() in [ "yes", "true" ]:
self.item.destination.append(str(x))
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 common_startElement(self, name, attrs):
return
elif name == "policy":
if "version" in attrs:
self.item.version = attrs["version"]
if "priority" in attrs:
self.item.priority = int(attrs["priority"])
if "target" in attrs:
target = attrs["target"]
if target not in POLICY_TARGETS:
raise FirewallError(errors.INVALID_TARGET, target)
if target:
self.item.target = target
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 == "source":
if not self._rule:
log.warning('Invalid rule: Source outside of rule')
self._rule_error = True
return
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
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 == "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)
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 == "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)
if self._rule_error:
return
self.item.parser_check_element_attrs(name, attrs)
if common_startElement(self, name, attrs):
return
elif 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 == "forward":
if self.item.forward:
log.warning("Forward already set, ignoring.")
else:
self.item.forward = True
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 == "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)
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