ÿØÿà JFIF    ÿÛ „  ( %"1!%)+...383,7(-.+  -+++--++++---+-+-----+---------------+---+-++7-----ÿÀ  ß â" ÿÄ     ÿÄ H    !1AQaq"‘¡2B±ÁÑð#R“Ò Tbr‚²á3csƒ’ÂñDS¢³$CÿÄ   ÿÄ %  !1AQa"23‘ÿÚ   ? ôÿ ¨pŸªáÿ —åYõõ\?àÒü©ŠÄï¨pŸªáÿ —åYõõ\?àÓü©ŠÄá 0Ÿªáÿ Ÿå[úƒ ú®ði~TÁbqÐ8OÕpÿ ƒOò¤Oè`–RÂáœá™êi€ßÉ< FtŸI“öÌ8úDf´°å}“¾œ6  öFá°y¥jñÇh†ˆ¢ã/ÃÐ:ªcÈ "Y¡ðÑl>ÿ ”ÏËte:qž\oäŠe÷󲍷˜HT4&ÿ ÓÐü6ö®¿øþßèô Ÿ•7Ñi’•j|“ñì>b…þS?*Óôÿ ÓÐü*h¥£ír¶ü UãSç‚Ÿ[AÐaè[ûª•õ&õj?†Éö+EzP—WeÒírJFt ‘BŒ†Ï‡%#tE Øz ¥OÛ«!1›üä±Í™%ºÍãö]°î(–:@<‹ŒÊö×òÆt¦ãº+‡¦%ÌÁ²h´OƒJŒtMÜ>ÀÜÊw3Y´•牋4ǍýʏTì>œú=Íwhyë,¾Ôò×õ¿ßÊa»«þˆѪQ|%6ž™A õ%:øj<>É—ÿ Å_ˆCbõ¥š±ý¯Ýƒï…¶|RëócÍf溪“t.СøTÿ *Ä¿-{†çàczůŽ_–^XþŒ±miB[X±d 1,é”zEù»& î9gœf™9Ð'.;—™i}!ôšåîqêÛ٤ёý£½ÆA–àôe"A$˝Úsäÿ ÷Û #°xŸëí(l »ý3—¥5m! rt`†0~'j2(]S¦¦kv,ÚÇ l¦øJA£Šƒ J3E8ÙiŽ:cÉžúeZ°€¯\®kÖ(79«Ž:¯X”¾³Š&¡* ….‰Ž(ÜíŸ2¥ª‡×Hi²TF¤ò[¨íÈRëÉ䢍mgÑ.Ÿ<öäS0í„ǹÁU´f#Vß;Õ–…P@3ío<ä-±»Ž.L|kªÀê›fÂ6@»eu‚|ÓaÞÆŸ…¨ááå>åŠ?cKü6ùTÍÆ”†sĤÚ;H2RÚ†õ\Ö·Ÿn'¾ ñ#ºI¤Å´%çÁ­‚â7›‹qT3Iï¨ÖÚ5I7Ë!ÅOóŸ¶øÝñØôת¦$Tcö‘[«Ö³šÒ';Aþ ¸èíg A2Z"i¸vdÄ÷.iõ®§)¿]¤À†–‡É&ä{V¶iŽ”.Ó×Õÿ û?h¬Mt–íª[ÿ Ñÿ ÌV(í}=ibÔ¡›¥¢±b Lô¥‡piη_Z<‡z§èŒ)iÖwiÇ 2hÙ3·=’d÷8éŽ1¦¸c¤µ€7›7Ø ð\á)} ¹fËí›pAÃL%âc2 í§æQz¿;T8sæ°qø)QFMð‰XŒÂ±N¢aF¨…8¯!U  Z©RÊ ÖPVÄÀÍin™Ì-GˆªÅËŠ›•zË}º±ŽÍFò¹}Uw×#ä5B¤{î}Ð<ÙD é©¤&‡ïDbàÁôMÁ." ¤‡ú*õ'VŽ|¼´Úgllº¼klz[Æüï÷Aób‡Eÿ dÑ»Xx9ÃÜ£ÁT/`¼¸vI±Ýµ·Ë‚“G³þ*Ÿû´r|*}<¨îºœ @¦mÄ’M¹”.œ«Y–|6ÏU¤jç¥ÕÞqO ˜kDÆÁ¨5ÿ š;Њ¦¦€GÙk \ –Þ=â¼=SͧµªS°ÚÍpÜãQűÀõ¬?ÃÁ1Ñ•õZà?hóœ€ L¦l{Y*K˜Ù›zc˜–ˆâ ø+¾ ­-Ök¥%ùEÜA'}ˆ><ÊIè“bpÍ/qÞâvoX€w,\úªò6Z[XdÒæ­@Ö—€$òJí#é>'°Ú ôª˜<)4ryÙ£|óAÅn5žêŸyÒäMÝ2{"}‰–¤l÷ûWX\l¾Á¸góÉOÔ /óñB¤f¸çñ[.P˜ZsÊË*ßT܈§QN¢’¡¨§V¼(Üù*eÕ“”5T¨‹Âê¥FŒã½Dü[8'Ò¥a…Ú¶k7a *•›¼'Ò·\8¨ª\@\õ¢¦íq+DÙrmÎ…_ªæ»ŠÓœ¡¯’Ré9MÅ×D™lælffc+ŒÑ,ý™ÿ ¯þǤ=Å’Á7µ÷ÚÛ/“Ü€ñýã¼àí¾ÕÑ+ƒ,uµMâÀÄbm:ÒÎPæ{˜Gz[ƒ¯«® KHà`ßØŠéí¯P8Aq.C‰ à€kòpj´kN¶qô€…Õ,ÜNŠª-­{Zö’æû44‰sŽè‰îVíRœÕm" 6?³D9¡ÇTíÅꋇ`4«¸ÝÁô ï’ýorqКÇZ«x4Žâéþuïf¹µö[P ,Q£éaX±`PÉÍZ ¸äYúg üAx ’6Lê‚xÝÓ*äQ  Ï’¨hÍ =²,6ï#rÃ<¯–£»ƒ‹,–ê•€ aÛsñ'%Æ"®ÛüìBᝠHÚ3ß°©$“XnœÖ’î2ËTeûìxîß ¦å¿çÉ ðK§þ{‘t‚Ϋ¬jéîZ[ ”š7L¥4VÚCE×]m¤Øy”ä4-dz£œ§¸x.*ãÊÊ b÷•h:©‡¦s`BTÁRû¾g⻩‹jø sF¢àJøFl‘È•Xᓁà~*j¯ +(ÚÕ6-£¯÷GŠØy‚<Ç’.F‹Hœw(+)ÜÜâÈzÄäT§FߘãÏ;DmVœ3Àu@mÚüXÝü•3B¨òÌÁÛ<·ÃÜ z,Ì@õÅ·d2]ü8s÷IôÞ¯^Ç9¢u„~ëAŸï4«M? 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See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . # """ipset io XML handler, reader, writer""" __all__ = [ "IPSet", "ipset_reader", "ipset_writer" ] import xml.sax as sax import os import io import shutil from firewall import config from firewall.functions import checkIP, checkIP6, checkIPnMask, \ checkIP6nMask, u2b_if_py2, check_mac, check_port, checkInterface, \ checkProtocol from firewall.core.io.io_object import PY2, IO_Object, \ IO_Object_ContentHandler, IO_Object_XMLGenerator from firewall.core.ipset import IPSET_TYPES, IPSET_CREATE_OPTIONS from firewall.core.icmp import check_icmp_name, check_icmp_type, \ check_icmpv6_name, check_icmpv6_type from firewall.core.logger import log from firewall import errors from firewall.errors import FirewallError class IPSet(IO_Object): IMPORT_EXPORT_STRUCTURE = ( ( "version", "" ), # s ( "short", "" ), # s ( "description", "" ), # s ( "type", "" ), # s ( "options", { "": "", }, ), # a{ss} ( "entries", [ "" ], ), # as ) DBUS_SIGNATURE = '(ssssa{ss}as)' ADDITIONAL_ALNUM_CHARS = [ "_", "-", ":", "." ] PARSER_REQUIRED_ELEMENT_ATTRS = { "short": None, "description": None, "ipset": [ "type" ], "option": [ "name" ], "entry": None, } PARSER_OPTIONAL_ELEMENT_ATTRS = { "ipset": [ "version" ], "option": [ "value" ], } def __init__(self): super(IPSet, self).__init__() self.version = "" self.short = "" self.description = "" self.type = "" self.entries = [ ] self.options = { } self.applied = False def cleanup(self): self.version = "" self.short = "" self.description = "" self.type = "" del self.entries[:] self.options.clear() self.applied = False def encode_strings(self): """ HACK. I haven't been able to make sax parser return strings encoded (because of python 2) instead of in unicode. Get rid of it once we throw out python 2 support.""" self.version = u2b_if_py2(self.version) self.short = u2b_if_py2(self.short) self.description = u2b_if_py2(self.description) self.type = u2b_if_py2(self.type) self.options = { u2b_if_py2(k):u2b_if_py2(v) for k, v in self.options.items() } self.entries = [ u2b_if_py2(e) for e in self.entries ] @staticmethod def check_entry(entry, options, ipset_type): family = "ipv4" if "family" in options: if options["family"] == "inet6": family = "ipv6" if not ipset_type.startswith("hash:"): raise FirewallError(errors.INVALID_IPSET, "ipset type '%s' not usable" % ipset_type) flags = ipset_type[5:].split(",") items = entry.split(",") if len(flags) != len(items) or len(flags) < 1: raise FirewallError( errors.INVALID_ENTRY, "entry '%s' does not match ipset type '%s'" % \ (entry, ipset_type)) for i in range(len(flags)): flag = flags[i] item = items[i] if flag == "ip": if "-" in item and family == "ipv4": # IP ranges only with plain IPs, no masks if i > 1: raise FirewallError( errors.INVALID_ENTRY, "invalid address '%s' in '%s'[%d]" % \ (item, entry, i)) splits = item.split("-") if len(splits) != 2: raise FirewallError( errors.INVALID_ENTRY, "invalid address range '%s' in '%s' for %s (%s)" % \ (item, entry, ipset_type, family)) for _split in splits: if (family == "ipv4" and not checkIP(_split)) or \ (family == "ipv6" and not checkIP6(_split)): raise FirewallError( errors.INVALID_ENTRY, "invalid address '%s' in '%s' for %s (%s)" % \ (_split, entry, ipset_type, family)) else: # IPs with mask only allowed in the first # position of the type if family == "ipv4": if item == "0.0.0.0": raise FirewallError( errors.INVALID_ENTRY, "invalid address '%s' in '%s' for %s (%s)" % \ (item, entry, ipset_type, family)) if i == 0: ip_check = checkIPnMask else: ip_check = checkIP else: ip_check = checkIP6 if not ip_check(item): raise FirewallError( errors.INVALID_ENTRY, "invalid address '%s' in '%s' for %s (%s)" % \ (item, entry, ipset_type, family)) elif flag == "net": if "-" in item: # IP ranges only with plain IPs, no masks splits = item.split("-") if len(splits) != 2: raise FirewallError( errors.INVALID_ENTRY, "invalid address range '%s' in '%s' for %s (%s)" % \ (item, entry, ipset_type, family)) # First part can only be a plain IP if (family == "ipv4" and not checkIP(splits[0])) or \ (family == "ipv6" and not checkIP6(splits[0])): raise FirewallError( errors.INVALID_ENTRY, "invalid address '%s' in '%s' for %s (%s)" % \ (splits[0], entry, ipset_type, family)) # Second part can also have a mask if (family == "ipv4" and not checkIPnMask(splits[1])) or \ (family == "ipv6" and not checkIP6nMask(splits[1])): raise FirewallError( errors.INVALID_ENTRY, "invalid address '%s' in '%s' for %s (%s)" % \ (splits[1], entry, ipset_type, family)) else: # IPs with mask allowed in all positions, but no /0 if item.endswith("/0"): if not (family == "ipv6" and i == 0 and ipset_type == "hash:net,iface"): raise FirewallError( errors.INVALID_ENTRY, "invalid address '%s' in '%s' for %s (%s)" % \ (item, entry, ipset_type, family)) if (family == "ipv4" and not checkIPnMask(item)) or \ (family == "ipv6" and not checkIP6nMask(item)): raise FirewallError( errors.INVALID_ENTRY, "invalid address '%s' in '%s' for %s (%s)" % \ (item, entry, ipset_type, family)) elif flag == "mac": # ipset does not allow to add 00:00:00:00:00:00 if not check_mac(item) or item == "00:00:00:00:00:00": raise FirewallError( errors.INVALID_ENTRY, "invalid mac address '%s' in '%s'" % (item, entry)) elif flag == "port": if ":" in item: splits = item.split(":") if len(splits) != 2: raise FirewallError( errors.INVALID_ENTRY, "invalid port '%s'" % (item)) if splits[0] == "icmp": if family != "ipv4": raise FirewallError( errors.INVALID_ENTRY, "invalid protocol for family '%s' in '%s'" % \ (family, entry)) if not check_icmp_name(splits[1]) and not \ check_icmp_type(splits[1]): raise FirewallError( errors.INVALID_ENTRY, "invalid icmp type '%s' in '%s'" % \ (splits[1], entry)) elif splits[0] in [ "icmpv6", "ipv6-icmp" ]: if family != "ipv6": raise FirewallError( errors.INVALID_ENTRY, "invalid protocol for family '%s' in '%s'" % \ (family, entry)) if not check_icmpv6_name(splits[1]) and not \ check_icmpv6_type(splits[1]): raise FirewallError( errors.INVALID_ENTRY, "invalid icmpv6 type '%s' in '%s'" % \ (splits[1], entry)) elif splits[0] not in [ "tcp", "sctp", "udp", "udplite" ] \ and not checkProtocol(splits[0]): raise FirewallError( errors.INVALID_ENTRY, "invalid protocol '%s' in '%s'" % (splits[0], entry)) elif not check_port(splits[1]): raise FirewallError( errors.INVALID_ENTRY, "invalid port '%s'in '%s'" % (splits[1], entry)) else: if not check_port(item): raise FirewallError( errors.INVALID_ENTRY, "invalid port '%s' in '%s'" % (item, entry)) elif flag == "mark": if item.startswith("0x"): try: int_val = int(item, 16) except ValueError: raise FirewallError( errors.INVALID_ENTRY, "invalid mark '%s' in '%s'" % (item, entry)) else: try: int_val = int(item) except ValueError: raise FirewallError( errors.INVALID_ENTRY, "invalid mark '%s' in '%s'" % (item, entry)) if int_val < 0 or int_val > 4294967295: raise FirewallError( errors.INVALID_ENTRY, "invalid mark '%s' in '%s'" % (item, entry)) elif flag == "iface": if not checkInterface(item) or len(item) > 15: raise FirewallError( errors.INVALID_ENTRY, "invalid interface '%s' in '%s'" % (item, entry)) else: raise FirewallError(errors.INVALID_IPSET, "ipset type '%s' not usable" % ipset_type) def _check_config(self, config, item, all_config): if item == "type": if config not in IPSET_TYPES: raise FirewallError(errors.INVALID_TYPE, "'%s' is not valid ipset type" % config) if item == "options": for key in config.keys(): if key not in IPSET_CREATE_OPTIONS: raise FirewallError(errors.INVALID_IPSET, "ipset invalid option '%s'" % key) if key in [ "timeout", "hashsize", "maxelem" ]: try: int_value = int(config[key]) except ValueError: raise FirewallError( errors.INVALID_VALUE, "Option '%s': Value '%s' is not an integer" % \ (key, config[key])) if int_value < 0: raise FirewallError( errors.INVALID_VALUE, "Option '%s': Value '%s' is negative" % \ (key, config[key])) elif key == "family" and \ config[key] not in [ "inet", "inet6" ]: raise FirewallError(errors.INVALID_FAMILY, config[key]) def import_config(self, config): if "timeout" in config[4] and config[4]["timeout"] != "0": if len(config[5]) != 0: raise FirewallError(errors.IPSET_WITH_TIMEOUT) for entry in config[5]: IPSet.check_entry(entry, config[4], config[3]) super(IPSet, self).import_config(config) # PARSER class ipset_ContentHandler(IO_Object_ContentHandler): 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"]) # nothing to do for entry and entries here def endElement(self, name): IO_Object_ContentHandler.endElement(self, name) if name == "entry": self.item.entries.append(self._element) def ipset_reader(filename, path): ipset = IPSet() if not filename.endswith(".xml"): raise FirewallError(errors.INVALID_NAME, "'%s' is missing .xml suffix" % filename) ipset.name = filename[:-4] ipset.check_name(ipset.name) ipset.filename = filename ipset.path = path ipset.builtin = False if path.startswith(config.ETC_FIREWALLD) else True ipset.default = ipset.builtin handler = ipset_ContentHandler(ipset) parser = sax.make_parser() parser.setContentHandler(handler) name = "%s/%s" % (path, filename) with open(name, "rb") as f: source = sax.InputSource(None) source.setByteStream(f) try: parser.parse(source) except sax.SAXParseException as msg: raise FirewallError(errors.INVALID_IPSET, "not a valid ipset file: %s" % \ msg.getException()) del handler del parser if "timeout" in ipset.options and ipset.options["timeout"] != "0" and \ len(ipset.entries) > 0: # no entries visible for ipsets with timeout log.warning("ipset '%s': timeout option is set, entries are ignored", ipset.name) del ipset.entries[:] i = 0 entries_set = set() while i < len(ipset.entries): if ipset.entries[i] in entries_set: log.warning("Entry %s already set, ignoring.", ipset.entries[i]) ipset.entries.pop(i) else: try: ipset.check_entry(ipset.entries[i], ipset.options, ipset.type) except FirewallError as e: log.warning("%s, ignoring.", e) ipset.entries.pop(i) else: entries_set.add(ipset.entries[i]) i += 1 del entries_set if PY2: ipset.encode_strings() return ipset def ipset_writer(ipset, path=None): _path = path if path else ipset.path if ipset.filename: name = "%s/%s" % (_path, ipset.filename) else: name = "%s/%s.xml" % (_path, ipset.name) if os.path.exists(name): try: shutil.copy2(name, "%s.old" % name) except Exception as msg: log.error("Backup of file '%s' failed: %s", name, msg) dirpath = os.path.dirname(name) if dirpath.startswith(config.ETC_FIREWALLD) and not os.path.exists(dirpath): if not os.path.exists(config.ETC_FIREWALLD): os.mkdir(config.ETC_FIREWALLD, 0o750) os.mkdir(dirpath, 0o750) f = io.open(name, mode='wt', encoding='UTF-8') handler = IO_Object_XMLGenerator(f) handler.startDocument() # start ipset element attrs = { "type": ipset.type } if ipset.version and ipset.version != "": attrs["version"] = ipset.version handler.startElement("ipset", attrs) handler.ignorableWhitespace("\n") # short if ipset.short and ipset.short != "": handler.ignorableWhitespace(" ") handler.startElement("short", { }) handler.characters(ipset.short) handler.endElement("short") handler.ignorableWhitespace("\n") # description if ipset.description and ipset.description != "": handler.ignorableWhitespace(" ") handler.startElement("description", { }) handler.characters(ipset.description) handler.endElement("description") handler.ignorableWhitespace("\n") # options for key,value in ipset.options.items(): handler.ignorableWhitespace(" ") if value != "": handler.simpleElement("option", { "name": key, "value": value }) else: handler.simpleElement("option", { "name": key }) handler.ignorableWhitespace("\n") # entries for entry in ipset.entries: handler.ignorableWhitespace(" ") handler.startElement("entry", { }) handler.characters(entry) handler.endElement("entry") handler.ignorableWhitespace("\n") # end ipset element handler.endElement('ipset') handler.ignorableWhitespace("\n") handler.endDocument() f.close() del handler