3 let fs = require("fs");
4 let uci = require("uci");
5 let ubus = require("ubus");
7 let STATEFILE = "/var/run/fw4.state";
10 let FLATTEN_LIST = 0x02;
12 let UNSUPPORTED = 0x08;
14 let DEPRECATED = 0x20;
16 let ipv4_icmptypes = {
17 "any": [ 0xFF, 0, 0xFF ],
18 "echo-reply": [ 0, 0, 0xFF ],
19 "pong": [ 0, 0, 0xFF ], /* Alias */
21 "destination-unreachable": [ 3, 0, 0xFF ],
22 "network-unreachable": [ 3, 0, 0 ],
23 "host-unreachable": [ 3, 1, 1 ],
24 "protocol-unreachable": [ 3, 2, 2 ],
25 "port-unreachable": [ 3, 3, 3 ],
26 "fragmentation-needed": [ 3, 4, 4 ],
27 "source-route-failed": [ 3, 5, 5 ],
28 "network-unknown": [ 3, 6, 6 ],
29 "host-unknown": [ 3, 7, 7 ],
30 "network-prohibited": [ 3, 9, 9 ],
31 "host-prohibited": [ 3, 10, 10 ],
32 "TOS-network-unreachable": [ 3, 11, 11 ],
33 "TOS-host-unreachable": [ 3, 12, 12 ],
34 "communication-prohibited": [ 3, 13, 13 ],
35 "host-precedence-violation": [ 3, 14, 14 ],
36 "precedence-cutoff": [ 3, 15, 15 ],
38 "source-quench": [ 4, 0, 0xFF ],
40 "redirect": [ 5, 0, 0xFF ],
41 "network-redirect": [ 5, 0, 0 ],
42 "host-redirect": [ 5, 1, 1 ],
43 "TOS-network-redirect": [ 5, 2, 2 ],
44 "TOS-host-redirect": [ 5, 3, 3 ],
46 "echo-request": [ 8, 0, 0xFF ],
47 "ping": [ 8, 0, 0xFF ], /* Alias */
49 "router-advertisement": [ 9, 0, 0xFF ],
51 "router-solicitation": [ 10, 0, 0xFF ],
53 "time-exceeded": [ 11, 0, 0xFF ],
54 "ttl-exceeded": [ 11, 0, 0xFF ], /* Alias */
55 "ttl-zero-during-transit": [ 11, 0, 0 ],
56 "ttl-zero-during-reassembly": [ 11, 1, 1 ],
58 "parameter-problem": [ 12, 0, 0xFF ],
59 "ip-header-bad": [ 12, 0, 0 ],
60 "required-option-missing": [ 12, 1, 1 ],
62 "timestamp-request": [ 13, 0, 0xFF ],
64 "timestamp-reply": [ 14, 0, 0xFF ],
66 "address-mask-request": [ 17, 0, 0xFF ],
68 "address-mask-reply": [ 18, 0, 0xFF ]
71 let ipv6_icmptypes = {
72 "destination-unreachable": [ 1, 0, 0xFF ],
73 "no-route": [ 1, 0, 0 ],
74 "communication-prohibited": [ 1, 1, 1 ],
75 "address-unreachable": [ 1, 3, 3 ],
76 "port-unreachable": [ 1, 4, 4 ],
78 "packet-too-big": [ 2, 0, 0xFF ],
80 "time-exceeded": [ 3, 0, 0xFF ],
81 "ttl-exceeded": [ 3, 0, 0xFF ], /* Alias */
82 "ttl-zero-during-transit": [ 3, 0, 0 ],
83 "ttl-zero-during-reassembly": [ 3, 1, 1 ],
85 "parameter-problem": [ 4, 0, 0xFF ],
86 "bad-header": [ 4, 0, 0 ],
87 "unknown-header-type": [ 4, 1, 1 ],
88 "unknown-option": [ 4, 2, 2 ],
90 "echo-request": [ 128, 0, 0xFF ],
91 "ping": [ 128, 0, 0xFF ], /* Alias */
93 "echo-reply": [ 129, 0, 0xFF ],
94 "pong": [ 129, 0, 0xFF ], /* Alias */
96 "router-solicitation": [ 133, 0, 0xFF ],
98 "router-advertisement": [ 134, 0, 0xFF ],
100 "neighbour-solicitation": [ 135, 0, 0xFF ],
101 "neighbor-solicitation": [ 135, 0, 0xFF ], /* Alias */
103 "neighbour-advertisement": [ 136, 0, 0xFF ],
104 "neighbor-advertisement": [ 136, 0, 0xFF ], /* Alias */
106 "redirect": [ 137, 0, 0xFF ]
135 function to_mask(bits, v6) {
138 if (bits < 0 || bits > (v6 ? 128 : 32))
141 for (let i = 0; i < (v6 ? 16 : 4); i++) {
142 let b = (bits < 8) ? bits : 8;
143 m[i] = (0xff << (8 - b)) & 0xff;
150 function to_bits(mask) {
151 let a = iptoarr(mask);
158 for (let i = 0, z = false; i < length(a); i++) {
161 while (!z && (a[i] & 0x80)) {
162 a[i] = (a[i] << 1) & 0xff;
173 function apply_mask(addr, mask) {
174 let a = iptoarr(addr);
179 if (type(mask) == "int") {
180 for (let i = 0; i < length(a); i++) {
181 let b = (mask < 8) ? mask : 8;
182 a[i] &= (0xff << (8 - b)) & 0xff;
187 let m = iptoarr(mask);
189 if (!m || length(a) != length(m))
192 for (let i = 0; i < length(a); i++)
199 function to_array(x) {
200 if (type(x) == "array")
206 if (type(x) == "object")
211 return (x == "") ? [] : split(x, /[ \t]+/);
214 function filter_pos(x) {
215 let rv = filter(x, e => !e.invert);
216 return length(rv) ? rv : null;
219 function filter_neg(x) {
220 let rv = filter(x, e => e.invert);
221 return length(rv) ? rv : null;
224 function null_if_empty(x) {
225 return length(x) ? x : null;
228 function subnets_split_af(x) {
231 for (let ag in to_array(x)) {
232 for (let a in filter(ag.addrs, a => (a.family == 4))) {
234 push(rv[0], { ...a, invert: ag.invert });
237 for (let a in filter(ag.addrs, a => (a.family == 6))) {
239 push(rv[1], { ...a, invert: ag.invert });
246 function subnets_group_by_masking(x) {
247 let groups = [], plain = [], nc = [], invert_plain = [], invert_masked = [];
249 for (let a in to_array(x)) {
250 if (a.bits == -1 && !a.invert)
254 else if (a.bits == -1)
255 push(invert_masked, a);
257 push(invert_plain, a);
261 push(groups, [ null, null_if_empty(invert_plain), [ a, ...invert_masked ] ]);
266 null_if_empty(invert_plain),
267 null_if_empty(invert_masked)
270 else if (!length(groups)) {
273 null_if_empty(invert_plain),
274 null_if_empty(invert_masked)
281 function ensure_tcpudp(x) {
282 if (length(filter(x, p => (p.name == "tcp" || p.name == "udp"))))
285 let rest = filter(x, p => !p.any),
286 any = filter(x, p => p.any);
288 if (length(any) && !length(rest)) {
290 push(x, { name: "tcp" }, { name: "udp" });
297 let is_family = (x, v) => (!x.family || x.family == v);
298 let family_is_ipv4 = (x) => (!x.family || x.family == 4);
299 let family_is_ipv6 = (x) => (!x.family || x.family == 6);
301 function infer_family(f, objects) {
305 for (let i = 0; i < length(objects); i += 2) {
306 let objs = to_array(objects[i]),
307 desc = objects[i + 1];
309 for (let obj in objs) {
310 if (!obj || !obj.family || obj.family == res)
320 ? sprintf('references IPv%d only %s but is restricted to IPv%d by %s', obj.family, desc, res, by)
321 : sprintf('is restricted to IPv%d but referenced %s is IPv%d only', res, desc, obj.family);
328 function map_setmatch(set, match, proto) {
329 if (!set || (('inet_service' in set.types) && proto != 'tcp' && proto != 'udp'))
334 for (let i, t in set.types) {
335 let dir = (((match.dir && match.dir[i]) || set.directions[i] || 'src') == 'src' ? 's' : 'd');
339 fields[i] = sprintf('ip %saddr', dir);
343 fields[i] = sprintf('ip6 %saddr', dir);
350 fields[i] = 'ether saddr';
354 fields[i] = sprintf('%s %sport', proto, dir);
362 function resolve_lower_devices(devstatus, devname) {
363 let dir = fs.opendir("/sys/class/net/" + devname);
367 if (!devstatus || devstatus[devname]?.["hw-tc-offload"]) {
373 while ((e = dir.read()) != null)
374 if (index(e, "lower_") === 0)
375 push(devs, ...resolve_lower_devices(devstatus, substr(e, 6)));
384 function nft_json_command(...args) {
385 let cmd = [ "/usr/sbin/nft", "--terse", "--json", ...args ];
386 let nft = fs.popen(join(" ", cmd), "r");
391 info = filter(json(nft.read("all"))?.nftables,
392 item => (type(item) == "object" && !item.metainfo));
395 warn(sprintf("Unable to parse nftables JSON output: %s\n", e));
401 warn(sprintf("Unable to popen() %s: %s\n", cmd, fs.error()));
407 function nft_try_hw_offload(devices) {
409 'add table inet fw4-hw-offload-test; ' +
410 'add flowtable inet fw4-hw-offload-test ft { ' +
411 'hook ingress priority 0; ' +
412 'devices = { "' + join('", "', devices) + '" }; ' +
416 let rc = system(sprintf("/usr/sbin/nft -c '%s' 2>/dev/null", replace(nft_test, "'", "'\\''")));
423 read_kernel_version: function() {
424 let fd = fs.open("/proc/version", "r"),
428 let m = match(fd.read("line"), /^Linux version ([0-9]+)\.([0-9]+)\.([0-9]+)/);
430 v = m ? (+m[1] << 24) | (+m[2] << 16) | (+m[3] << 8) : 0;
437 resolve_offload_devices: function() {
438 if (!this.default_option("flow_offloading"))
441 let devstatus = null;
444 if (this.default_option("flow_offloading_hw")) {
445 let bus = ubus.connect();
448 devstatus = bus.call("network.device", "status") || {};
452 for (let zone in this.zones())
453 for (let device in zone.match_devices)
454 push(devices, ...resolve_lower_devices(devstatus, device));
456 devices = uniq(devices);
458 if (nft_try_hw_offload(devices))
461 this.warn('Hardware flow offloading unavailable, falling back to software offloading');
462 this.state.defaults.flow_offloading_hw = false;
467 for (let zone in this.zones())
468 for (let device in zone.match_devices)
469 push(devices, ...resolve_lower_devices(null, device));
471 return uniq(devices);
474 check_set_types: function() {
477 for (let item in nft_json_command("list", "sets", "inet"))
478 if (item.set?.table == "fw4")
479 sets[item.set.name] = (type(item.set.type) == "array") ? item.set.type : [ item.set.type ];
484 check_flowtable: function() {
485 for (let item in nft_json_command("list", "flowtables", "inet"))
486 if (item.flowtable?.table == "fw4" && item.flowtable?.name == "ft")
492 read_state: function() {
493 let fd = fs.open(STATEFILE, "r");
498 state = json(fd.read("all"));
501 warn(sprintf("Unable to parse '%s': %s\n", STATEFILE, e));
510 read_ubus: function() {
513 rules = [], networks = {},
514 bus = ubus.connect();
517 ifaces = bus.call("network.interface", "dump");
518 services = bus.call("service", "get_data", { "type": "firewall" });
523 warn(sprintf("Unable to connect to ubus: %s\n", ubus.error()));
528 // Gather logical network information from ubus
531 if (type(ifaces) == "object" && type(ifaces.interface) == "array") {
532 for (let ifc in ifaces.interface) {
535 device: ifc.l3_device,
539 if (type(ifc["ipv4-address"]) == "array") {
540 for (let addr in ifc["ipv4-address"]) {
541 net.ipaddrs = net.ipaddrs || [];
545 mask: to_mask(addr.mask, false),
551 if (type(ifc["ipv6-address"]) == "array") {
552 for (let addr in ifc["ipv6-address"]) {
553 net.ipaddrs = net.ipaddrs || [];
557 mask: to_mask(addr.mask, true),
563 if (type(ifc["ipv6-prefix-assignment"]) == "array") {
564 for (let addr in ifc["ipv6-prefix-assignment"]) {
565 if (addr["local-address"]) {
566 net.ipaddrs = net.ipaddrs || [];
569 addr: addr["local-address"].address,
570 mask: to_mask(addr["local-address"].mask, true),
571 bits: addr["local-address"].mask
577 if (type(ifc.data) == "object" && type(ifc.data.firewall) == "array") {
580 for (let rulespec in ifc.data.firewall) {
584 name: (rulespec.type != 'ipset') ? sprintf('ubus:%s[%s] %s %d', ifc.interface, ifc.proto, rulespec.type || 'rule', n) : rulespec.name,
585 device: rulespec.device || ifc.l3_device
592 networks[ifc.interface] = net;
598 // Gather firewall rule definitions from ubus services
601 if (type(services) == "object") {
602 for (let svcname, service in services) {
603 if (type(service) == "object" && type(service.firewall) == "array") {
606 for (let rulespec in services[svcname].firewall) {
610 name: (rulespec.type != 'ipset') ? sprintf('ubus:%s %s %d', svcname, rulespec.type || 'rule', n) : rulespec.name
617 for (let svcinst, instance in service) {
618 if (type(instance) == "object" && type(instance.firewall) == "array") {
621 for (let rulespec in instance.firewall) {
625 name: (rulespec.type != 'ipset') ? sprintf('ubus:%s[%s] %s %d', svcname, svcinst, rulespec.type || 'rule', n) : rulespec.name
641 load: function(use_statefile) {
644 this.state = use_statefile ? this.read_state() : null;
646 this.cursor = uci.cursor();
647 this.cursor.load("firewall");
648 this.cursor.load("/usr/share/firewall4/helpers");
651 this.state = this.read_ubus();
653 this.kernel = this.read_kernel_version();
657 // Read helper mapping
660 this.cursor.foreach("helpers", "helper", h => self.parse_helper(h));
664 // Read default policies
667 this.cursor.foreach("firewall", "defaults", d => self.parse_defaults(d));
669 if (!this.state.defaults)
670 this.parse_defaults({});
674 // Build list of ipsets
677 if (!this.state.ipsets) {
678 map(filter(this.state.ubus_rules, n => (n.type == "ipset")), s => self.parse_ipset(s));
679 this.cursor.foreach("firewall", "ipset", s => self.parse_ipset(s));
684 // Build list of logical zones
687 if (!this.state.zones)
688 this.cursor.foreach("firewall", "zone", z => self.parse_zone(z));
692 // Build list of rules
695 map(filter(this.state.ubus_rules, r => (r.type == "rule")), r => self.parse_rule(r));
696 this.cursor.foreach("firewall", "rule", r => self.parse_rule(r));
700 // Build list of forwardings
703 this.cursor.foreach("firewall", "forwarding", f => self.parse_forwarding(f));
707 // Build list of redirects
710 map(filter(this.state.ubus_rules, r => (r.type == "redirect")), r => self.parse_redirect(r));
711 this.cursor.foreach("firewall", "redirect", r => self.parse_redirect(r));
715 // Build list of snats
718 map(filter(this.state.ubus_rules, n => (n.type == "nat")), n => self.parse_nat(n));
719 this.cursor.foreach("firewall", "nat", n => self.parse_nat(n));
723 let fd = fs.open(STATEFILE, "w");
727 zones: this.state.zones,
728 ipsets: this.state.ipsets,
729 networks: this.state.networks,
730 ubus_rules: this.state.ubus_rules
736 warn("Unable to write '%s': %s\n", STATEFILE, fs.error());
741 warn: function(fmt, ...args) {
745 let msg = sprintf(fmt, ...args);
748 warn("\033[33m", msg, "\033[m\n");
750 warn("[!] ", msg, "\n");
753 get: function(sid, opt) {
754 return this.cursor.get("firewall", sid, opt);
757 get_all: function(sid) {
758 return this.cursor.get_all("firewall", sid);
761 parse_options: function(s, spec) {
764 for (let key, val in spec) {
765 let datatype = "parse_" + val[0],
768 parsefn = (flags & PARSE_LIST) ? "parse_list" : "parse_opt";
770 let res = this[parsefn](s, key, datatype, defval, flags);
775 if (type(res) == "object" && res.invert && (flags & NO_INVERT)) {
776 this.warn_section(s, "option '" + key + '" must not be negated');
781 if (flags & DEPRECATED)
782 this.warn_section(s, "option '" + key + "' is deprecated by fw4");
783 else if (flags & UNSUPPORTED)
784 this.warn_section(s, "option '" + key + "' is not supported by fw4");
791 if (index(opt, '.') != 0 && opt != 'type' && !exists(spec, opt)) {
792 this.warn_section(s, "specifies unknown option '" + opt + "'");
799 parse_subnet: function(subnet) {
800 let parts = split(subnet, "/");
803 switch (length(parts)) {
805 a = iptoarr(parts[0]);
806 m = iptoarr(parts[1]);
812 if (length(a) != length(m))
815 b = to_bits(parts[1]);
817 /* allow non-contiguous masks such as `::ffff:ffff:ffff:ffff` */
830 if (type(b) != "int")
833 m = to_mask(b, length(a) == 16);
837 family: (length(a) == 16) ? 6 : 4,
844 parts = split(parts[0], "-");
846 switch (length(parts)) {
848 a = iptoarr(parts[0]);
849 b = iptoarr(parts[1]);
851 if (a && b && length(a) == length(b)) {
853 family: (length(a) == 16) ? 6 : 4,
863 a = iptoarr(parts[0]);
867 family: (length(a) == 16) ? 6 : 4,
869 mask: to_mask(length(a) * 8, length(a) == 16),
874 n = this.state.networks[parts[0]];
877 return [ ...(n.ipaddrs || []) ];
884 parse_enum: function(val, choices) {
885 if (type(val) == "string") {
888 for (let i = 0; i < length(choices); i++)
889 if (substr(choices[i], 0, length(val)) == val)
896 section_id: function(sid) {
897 let s = this.get_all(sid);
902 if (s[".anonymous"]) {
905 this.cursor.foreach("firewall", s[".type"], function(ss) {
906 if (ss[".name"] == s[".name"])
912 return sprintf("@%s[%d]", s[".type"], c);
918 warn_section: function(s, msg) {
921 this.warn("Section %s (%s) %s", this.section_id(s[".name"]), s.name, msg);
923 this.warn("Section %s %s", this.section_id(s[".name"]), msg);
927 this.warn("ubus %s (%s) %s", s.type || "rule", s.name, msg);
929 this.warn("ubus %s %s", s.type || "rule", msg);
933 parse_policy: function(val) {
934 return this.parse_enum(val, [
941 parse_bool: function(val) {
942 if (val == "1" || val == "on" || val == "true" || val == "yes")
944 else if (val == "0" || val == "off" || val == "false" || val == "no")
950 parse_family: function(val) {
951 if (val == 'any' || val == 'all' || val == '*')
953 else if (val == 'inet' || index(val, '4') > -1)
955 else if (index(val, '6') > -1)
961 parse_zone_ref: function(val) {
966 return { any: true };
968 for (let zone in this.state.zones) {
969 if (zone.name == val) {
980 parse_device: function(val) {
981 let rv = this.parse_invert(val);
994 parse_direction: function(val) {
995 if (val == 'in' || val == 'ingress')
997 else if (val == 'out' || val == 'egress')
1003 parse_setmatch: function(val) {
1004 let rv = this.parse_invert(val);
1009 rv.val = trim(replace(rv.val, /^[^ \t]+/, function(m) {
1014 let dir = split(rv.val, /[ \t,]/);
1016 for (let i = 0; i < 3 && i < length(dir); i++) {
1017 if (dir[i] == "dst" || dir[i] == "dest") {
1018 rv.dir = rv.dir || [];
1021 else if (dir[i] == "src") {
1022 rv.dir = rv.dir || [];
1027 return length(rv.name) ? rv : null;
1030 parse_cthelper: function(val) {
1031 let rv = this.parse_invert(val);
1036 let helper = filter(this.state.helpers, h => (h.name == rv.val))[0];
1038 return helper ? { ...rv, ...helper } : null;
1041 parse_protocol: function(val) {
1042 let p = this.parse_invert(val);
1064 p.name = 'ipv6-icmp';
1069 { invert: p.invert, name: 'tcp' },
1070 { invert: p.invert, name: 'udp' }
1085 return (p.any || length(p.name)) ? p : null;
1088 parse_mac: function(val) {
1089 let mac = this.parse_invert(val);
1090 let m = mac ? match(mac.val, /^([0-9a-f]{1,2})[:-]([0-9a-f]{1,2})[:-]([0-9a-f]{1,2})[:-]([0-9a-f]{1,2})[:-]([0-9a-f]{1,2})[:-]([0-9a-f]{1,2})$/i) : null;
1095 mac.mac = sprintf('%02x:%02x:%02x:%02x:%02x:%02x',
1096 hex(m[1]), hex(m[2]), hex(m[3]),
1097 hex(m[4]), hex(m[5]), hex(m[6]));
1102 parse_port: function(val) {
1103 let port = this.parse_invert(val);
1104 let m = port ? match(port.val, /^([0-9]{1,5})([-:]([0-9]{1,5}))?$/i) : null;
1110 let min_port = +m[1];
1111 let max_port = +m[3];
1113 if (min_port > max_port ||
1114 min_port < 0 || max_port < 0 ||
1115 min_port > 65535 || max_port > 65535)
1118 port.min = min_port;
1119 port.max = max_port;
1124 if (pn != pn || pn < 0 || pn > 65535)
1134 parse_network: function(val) {
1135 let rv = this.parse_invert(val);
1140 let nets = this.parse_subnet(rv.val);
1146 rv.addrs = [ ...nets ];
1151 parse_icmptype: function(val) {
1154 if (exists(ipv4_icmptypes, val)) {
1157 rv.type = ipv4_icmptypes[val][0];
1158 rv.code_min = ipv4_icmptypes[val][1];
1159 rv.code_max = ipv4_icmptypes[val][2];
1162 if (exists(ipv6_icmptypes, val)) {
1163 rv.family = rv.family ? 0 : 6;
1165 rv.type6 = ipv6_icmptypes[val][0];
1166 rv.code6_min = ipv6_icmptypes[val][1];
1167 rv.code6_max = ipv6_icmptypes[val][2];
1170 if (!exists(rv, "family")) {
1171 let m = match(val, /^([0-9]+)(\/([0-9]+))?$/);
1178 rv.code_min = +m[3];
1179 rv.code_max = rv.code_min;
1187 if (rv.type > 0xFF || rv.code_min > 0xFF || rv.code_max > 0xFF)
1193 rv.code6_min = rv.code_min;
1194 rv.code6_max = rv.code_max;
1200 parse_invert: function(val) {
1204 let rv = { invert: false };
1206 rv.val = trim(replace(val, /^[ \t]*!/, () => (rv.invert = true, '')));
1208 return length(rv.val) ? rv : null;
1211 parse_limit: function(val) {
1212 let rv = this.parse_invert(val);
1213 let m = rv ? match(rv.val, /^([0-9]+)(\/([a-z]+))?$/) : null;
1219 let u = m[3] ? this.parse_enum(m[3], [ "second", "minute", "hour", "day" ]) : "second";
1230 parse_int: function(val) {
1233 return (n == n) ? n : null;
1236 parse_date: function(val) {
1237 let m = match(val, /^([0-9-]+)T([0-9:]+)$/);
1238 let d = m ? match(m[1], /^([0-9]{1,4})(-([0-9]{1,2})(-([0-9]{1,2}))?)?$/) : null;
1239 let t = this.parse_time(m[2]);
1244 if (d == null || d[1] < 1970 || d[1] > 2038 || d[3] < 1 || d[3] > 12 || d[5] < 1 || d[5] > 31)
1254 hour: t ? +t[1] : 0,
1260 parse_time: function(val) {
1261 let t = match(val, /^([0-9]{1,2})(:([0-9]{1,2})(:([0-9]{1,2}))?)?$/);
1263 if (t == null || t[1] > 23 || t[3] > 59 || t[5] > 59)
1273 parse_weekdays: function(val) {
1274 let rv = this.parse_invert(val);
1279 for (let day in to_array(rv.val)) {
1280 day = this.parse_enum(day, [
1293 rv.days = rv.days || {};
1294 rv.days[day] = true;
1297 rv.days = keys(rv.days);
1299 return rv.days ? rv : null;
1302 parse_monthdays: function(val) {
1303 let rv = this.parse_invert(val);
1308 for (let day in to_array(rv.val)) {
1311 if (day < 1 || day > 31)
1314 rv.days = rv.days || [];
1315 rv.days[day] = true;
1318 return rv.days ? rv : null;
1321 parse_mark: function(val) {
1322 let rv = this.parse_invert(val);
1323 let m = rv ? match(rv.val, /^(0?x?[0-9a-f]+)(\/(0?x?[0-9a-f]+))?$/i) : null;
1330 if (n != n || n > 0xFFFFFFFF)
1334 rv.mask = 0xFFFFFFFF;
1339 if (n != n || n > 0xFFFFFFFF)
1348 parse_dscp: function(val) {
1349 let rv = this.parse_invert(val);
1354 rv.val = uc(rv.val);
1356 if (exists(dscp_classes, rv.val)) {
1357 rv.dscp = dscp_classes[rv.val];
1362 if (n != n || n < 0 || n > 0x3F)
1371 parse_target: function(val) {
1372 return this.parse_enum(val, [
1389 parse_reject_code: function(val) {
1390 return this.parse_enum(val, [
1399 parse_reflection_source: function(val) {
1400 return this.parse_enum(val, [
1406 parse_ipsettype: function(val) {
1407 let m = match(val, /^(src|dst|dest)_(.+)$/);
1408 let t = this.parse_enum(m ? m[2] : val, [
1416 return t ? [ (!m || m[1] == 'src') ? 'src' : 'dst', t ] : null;
1419 parse_ipsetentry: function(val, set) {
1420 let values = split(val, /[ \t]+/);
1422 if (length(values) != length(set.types))
1428 for (let i, t in set.types) {
1431 ip = filter(this.parse_subnet(values[i]), a => (a.family == 4));
1433 switch (length(ip)) {
1434 case 0: return null;
1436 default: this.warn("Set entry '%s' resolves to multiple addresses, using first one", values[i]);
1439 rv[i] = ("net" in set.fw4types) ? ip[0].addr + "/" + ip[0].bits : ip[0].addr;
1443 ip = filter(this.parse_subnet(values[i]), a => (a.family == 6));
1445 switch(length(ip)) {
1446 case 0: return null;
1448 case 2: this.warn("Set entry '%s' resolves to multiple addresses, using first one", values[i]);
1451 rv[i] = ("net" in set.fw4types) ? ip[0].addr + "/" + ip[0].bits : ip[0].addr;
1456 mac = this.parse_mac(values[i]);
1458 if (!mac || mac.invert)
1464 case 'inet_service':
1465 port = this.parse_port(values[i]);
1467 if (!port || port.invert || port.min != port.max)
1478 return length(rv) ? rv : null;
1481 parse_string: function(val) {
1485 parse_opt: function(s, opt, fn, defval, flags) {
1489 if (flags & REQUIRED) {
1490 this.warn_section(s, "option '" + opt + "' is mandatory but not set");
1497 if (type(val) == "array") {
1498 this.warn_section(s, "option '" + opt + "' must not be a list");
1501 else if (val == null) {
1505 let res = this[fn](val);
1508 this.warn_section(s, "option '" + opt + "' specifies invalid value '" + val + "'");
1515 parse_list: function(s, opt, fn, defval, flags) {
1520 if (flags & REQUIRED) {
1521 this.warn_section(s, "option '" + opt + "' is mandatory but not set");
1528 for (val in to_array(val)) {
1529 let res = this[fn](val);
1532 this.warn_section(s, "option '" + opt + "' specifies invalid value '" + val + "'");
1536 if (flags & FLATTEN_LIST)
1537 push(rv, ...to_array(res));
1542 return length(rv) ? rv : null;
1545 quote: function(s, force) {
1546 if (force === true || !match(s, /^([0-9A-Fa-f:.\/-]+)( \. [0-9A-Fa-f:.\/-]+)*$/))
1547 return sprintf('"%s"', replace(s + "", /(["\\])/g, '\\$1'));
1554 return sprintf("%s-%s", a.addr, a.addr2);
1556 if ((a.family == 4 && a.bits == 32) ||
1557 (a.family == 6 && a.bits == 128))
1561 return sprintf("%s/%d", apply_mask(a.addr, a.bits), a.bits);
1563 return sprintf("%s/%s", a.addr, a.mask);
1568 ? sprintf("%s-%s", a.addr, a.addr2)
1569 : apply_mask(a.addr, a.bits);
1574 return sprintf('%d', p.min);
1576 return sprintf('%d-%d', p.min, p.max);
1579 set: function(v, force) {
1582 v = filter(to_array(v), item => !seen[item]++);
1584 if (force || length(v) != 1)
1585 return sprintf('{ %s }', join(', ', map(v, this.quote)));
1587 return this.quote(v[0]);
1590 concat: function(v) {
1591 return join(' . ', to_array(v));
1594 ipproto: function(family) {
1604 nfproto: function(family, human_readable) {
1607 return human_readable ? "IPv4" : "ipv4";
1610 return human_readable ? "IPv6" : "ipv6";
1613 return human_readable ? "IPv4/IPv6" : null;
1617 datetime: function(stamp) {
1618 return sprintf('"%04d-%02d-%02d %02d:%02d:%02d"',
1619 stamp.year, stamp.month, stamp.day,
1620 stamp.hour, stamp.min, stamp.sec);
1623 date: function(stamp) {
1624 return sprintf('"%04d-%02d-%02d"', stamp.year, stamp.month, stamp.day);
1627 time: function(stamp) {
1628 return sprintf('"%02d:%02d:%02d"', stamp.hour, stamp.min, stamp.sec);
1632 return sprintf('0x%x', n);
1635 is_loopback_dev: function(dev) {
1636 let fd = fs.open(sprintf("/sys/class/net/%s/flags", dev), "r");
1641 let flags = +fd.read("line");
1645 return !!(flags & 0x8);
1648 is_loopback_addr: function(addr) {
1649 return (index(addr, "127.") == 0 || addr == "::1" || addr == "::1/128");
1652 filter_loopback_devs: function(devs, invert) {
1653 return null_if_empty(filter(devs, d => (this.is_loopback_dev(d) == invert)));
1656 filter_loopback_addrs: function(addrs, invert) {
1657 return null_if_empty(filter(addrs, a => (this.is_loopback_addr(a) == invert)));
1661 input_policy: function(reject_as_drop) {
1662 return (!reject_as_drop || this.state.defaults.input != 'reject') ? this.state.defaults.input : 'drop';
1665 output_policy: function(reject_as_drop) {
1666 return (!reject_as_drop || this.state.defaults.output != 'reject') ? this.state.defaults.output : 'drop';
1669 forward_policy: function(reject_as_drop) {
1670 return (!reject_as_drop || this.state.defaults.forward != 'reject') ? this.state.defaults.forward : 'drop';
1673 default_option: function(flag) {
1674 return this.state.defaults[flag];
1677 helpers: function() {
1678 return this.state.helpers;
1682 return this.state.zones;
1685 rules: function(chain) {
1686 return filter(this.state.rules, r => (r.chain == chain));
1689 redirects: function(chain) {
1690 return filter(this.state.redirects, r => (r.chain == chain));
1693 ipsets: function() {
1694 return this.state.ipsets;
1697 parse_setfile: function(set, cb) {
1698 let fd = fs.open(set.loadfile, "r");
1701 warn(sprintf("Unable to load file '%s' for set '%s': %s\n",
1702 set.loadfile, set.name, fs.error()));
1706 let line = null, count = 0;
1708 while ((line = fd.read("line")) !== "") {
1711 if (length(line) == 0 || ord(line) == 35)
1714 let v = this.parse_ipsetentry(line, set);
1717 this.warn("Skipping invalid entry '%s' in file '%s' for set '%s'",
1718 line, set.loadfile, set.name);
1732 print_setentries: function(set) {
1734 let printer = (entry) => {
1736 print("\t\telements = {\n");
1740 print("\t\t\t", join(" . ", entry), ",\n");
1743 map(set.entries, printer);
1746 this.parse_setfile(set, printer);
1752 parse_helper: function(data) {
1753 let helper = this.parse_options(data, {
1754 name: [ "string", null, REQUIRED ],
1755 description: [ "string" ],
1756 module: [ "string" ],
1757 family: [ "family" ],
1758 proto: [ "protocol", null, PARSE_LIST | FLATTEN_LIST | NO_INVERT ],
1759 port: [ "port", null, NO_INVERT ]
1762 if (helper === false) {
1763 this.warn("Helper definition '%s' skipped due to invalid options", data.name || data['.name']);
1766 else if (helper.proto.any) {
1767 this.warn("Helper definition '%s' must not specify wildcard protocol", data.name || data['.name']);
1770 else if (length(helper.proto) > 1) {
1771 this.warn("Helper definition '%s' must not specify multiple protocols", data.name || data['.name']);
1775 helper.available = ((fs.stat("/sys/module/" + helper.module) || {}).type == "directory");
1777 this.state.helpers = this.state.helpers || [];
1778 push(this.state.helpers, helper);
1781 parse_defaults: function(data) {
1782 if (this.state.defaults) {
1783 this.warn_section(data, ": ignoring duplicate defaults section");
1787 let defs = this.parse_options(data, {
1788 input: [ "policy", "drop" ],
1789 output: [ "policy", "drop" ],
1790 forward: [ "policy", "drop" ],
1792 drop_invalid: [ "bool" ],
1793 tcp_reject_code: [ "reject_code", "tcp-reset" ],
1794 any_reject_code: [ "reject_code", "port-unreachable" ],
1796 syn_flood: [ "bool" ],
1797 synflood_protect: [ "bool" ],
1798 synflood_rate: [ "limit", "25/second" ],
1799 synflood_burst: [ "int", "50" ],
1801 tcp_syncookies: [ "bool", "1" ],
1803 tcp_window_scaling: [ "bool", "1" ],
1805 accept_redirects: [ "bool" ],
1806 accept_source_route: [ "bool" ],
1808 auto_helper: [ "bool", "1" ],
1809 custom_chains: [ "bool", null, UNSUPPORTED ],
1810 disable_ipv6: [ "bool", null, UNSUPPORTED ],
1811 flow_offloading: [ "bool", "0" ],
1812 flow_offloading_hw: [ "bool", "0" ]
1815 if (defs.synflood_protect === null)
1816 defs.synflood_protect = defs.syn_flood;
1818 delete defs.syn_flood;
1820 this.state.defaults = defs;
1823 parse_zone: function(data) {
1824 let zone = this.parse_options(data, {
1825 enabled: [ "bool", "1" ],
1827 name: [ "string", null, REQUIRED ],
1828 family: [ "family" ],
1830 network: [ "device", null, PARSE_LIST ],
1831 device: [ "device", null, PARSE_LIST ],
1832 subnet: [ "network", null, PARSE_LIST ],
1834 input: [ "policy", this.state.defaults ? this.state.defaults.input : "drop" ],
1835 output: [ "policy", this.state.defaults ? this.state.defaults.output : "drop" ],
1836 forward: [ "policy", this.state.defaults ? this.state.defaults.forward : "drop" ],
1839 masq_allow_invalid: [ "bool" ],
1840 masq_src: [ "network", null, PARSE_LIST ],
1841 masq_dest: [ "network", null, PARSE_LIST ],
1845 extra: [ "string", null, UNSUPPORTED ],
1846 extra_src: [ "string", null, UNSUPPORTED ],
1847 extra_dest: [ "string", null, UNSUPPORTED ],
1849 mtu_fix: [ "bool" ],
1850 custom_chains: [ "bool", null, UNSUPPORTED ],
1853 log_limit: [ "limit", null, UNSUPPORTED ],
1855 auto_helper: [ "bool", "1" ],
1856 helper: [ "cthelper", null, PARSE_LIST ],
1858 counter: [ "bool", "1" ]
1861 if (zone === false) {
1862 this.warn_section(data, "skipped due to invalid options");
1865 else if (!zone.enabled) {
1866 this.warn_section(data, "is disabled, ignoring section");
1869 else if (zone.helper && !zone.helper.available) {
1870 this.warn_section(data, "uses unavailable ct helper '" + zone.helper.name + "', ignoring section");
1874 if (zone.mtu_fix && this.kernel < 0x040a0000) {
1875 this.warn_section(data, "option 'mtu_fix' requires kernel 4.10 or later");
1879 if (this.state.defaults && this.state.defaults.auto_helper === false)
1880 zone.auto_helper = false;
1882 let match_devices = [];
1883 let related_subnets = [];
1884 let related_ubus_networks = [];
1885 let match_subnets, masq_src_subnets, masq_dest_subnets;
1887 for (let name, net in this.state.networks) {
1888 if (net.zone === zone.name)
1889 push(related_ubus_networks, { invert: false, device: name });
1892 for (let e in [ ...to_array(zone.network), ...related_ubus_networks ]) {
1893 if (exists(this.state.networks, e.device)) {
1894 let net = this.state.networks[e.device];
1897 push(match_devices, {
1903 push(related_subnets, ...(net.ipaddrs || []));
1907 push(match_devices, ...to_array(zone.device));
1909 match_subnets = subnets_split_af(zone.subnet);
1910 masq_src_subnets = subnets_split_af(zone.masq_src);
1911 masq_dest_subnets = subnets_split_af(zone.masq_dest);
1913 push(related_subnets, ...(match_subnets[0] || []), ...(match_subnets[1] || []));
1915 let match_rules = [];
1917 let add_rule = (family, devices, subnets, zone) => {
1922 r.devices_pos = null_if_empty(devices[0]);
1923 r.devices_neg = null_if_empty(devices[1]);
1924 r.devices_neg_wildcard = null_if_empty(devices[2]);
1926 r.subnets_pos = map(subnets[0], this.cidr);
1927 r.subnets_neg = map(subnets[1], this.cidr);
1928 r.subnets_masked = subnets[2];
1930 push(match_rules, r);
1933 let family = infer_family(zone.family, [
1934 zone.helper, "ct helper"
1937 // group non-inverted device matches into wildcard and non-wildcard ones
1938 let devices = [], plain_devices = [], plain_invert_devices = [], wildcard_invert_devices = [];
1940 for (let device in match_devices) {
1941 let m = match(device.device, /^([^+]*)(\+)?$/);
1944 this.warn_section(data, "skipping invalid wildcard pattern '" + device.device + '"');
1948 // filter `+` (match any device) since nftables does not support
1949 // wildcard only matches
1950 if (!device.invert && m[0] == '+')
1953 // replace inverted `+` (match no device) with invalid pattern
1954 if (device.invert && m[0] == '+') {
1955 device.device = '/never/';
1956 device.invert = false;
1959 // replace "name+" matches with "name*"
1960 else if (m[2] == '+')
1961 device.device = m[1] + '*';
1963 device.wildcard = !!m[2];
1965 if (!device.invert && device.wildcard)
1966 push(devices, [ [ device.device ], plain_invert_devices, wildcard_invert_devices ]);
1967 else if (!device.invert)
1968 push(plain_devices, device.device);
1969 else if (device.wildcard)
1970 push(wildcard_invert_devices, device.device);
1972 push(plain_invert_devices, device.device);
1975 if (length(plain_devices))
1978 plain_invert_devices,
1979 wildcard_invert_devices
1981 else if (!length(devices))
1984 plain_invert_devices,
1985 wildcard_invert_devices
1988 // emit zone jump rules for each device group
1989 if (length(match_devices) || length(match_subnets[0]) || length(match_subnets[1])) {
1990 for (let devgroup in devices) {
1991 // check if there's no AF specific bits, in this case we can do AF agnostic matching
1992 if (!family && !length(match_subnets[0]) && !length(match_subnets[1])) {
1993 add_rule(0, devgroup, [], zone);
1996 // we need to emit one or two AF specific rules
1998 if (family_is_ipv4(zone) && length(match_subnets[0]))
1999 for (let subnets in subnets_group_by_masking(match_subnets[0]))
2000 add_rule(4, devgroup, subnets, zone);
2002 if (family_is_ipv6(zone) && length(match_subnets[1]))
2003 for (let subnets in subnets_group_by_masking(match_subnets[1]))
2004 add_rule(6, devgroup, subnets, zone);
2009 zone.match_rules = match_rules;
2011 zone.masq4_src_subnets = subnets_group_by_masking(masq_src_subnets[0]);
2012 zone.masq4_dest_subnets = subnets_group_by_masking(masq_dest_subnets[0]);
2014 zone.masq6_src_subnets = subnets_group_by_masking(masq_src_subnets[1]);
2015 zone.masq6_dest_subnets = subnets_group_by_masking(masq_dest_subnets[1]);
2018 zone.sflags[zone.input] = true;
2021 zone.dflags[zone.output] = true;
2022 zone.dflags[zone.forward] = true;
2024 zone.match_devices = map(filter(match_devices, d => !d.invert), d => d.device);
2025 zone.match_subnets = map(filter(related_subnets, s => !s.invert && s.bits != -1), this.cidr);
2027 zone.related_subnets = related_subnets;
2029 if (zone.masq || zone.masq6)
2030 zone.dflags.snat = true;
2032 if ((zone.auto_helper && !(zone.masq || zone.masq6)) || length(zone.helper)) {
2033 zone.dflags.helper = true;
2035 for (let helper in (length(zone.helper) ? zone.helper : this.state.helpers)) {
2036 if (!helper.available)
2039 for (let proto in helper.proto) {
2040 this.state.rules = this.state.rules || [];
2041 push(this.state.rules, {
2042 chain: "helper_" + zone.name,
2043 family: helper.family,
2044 name: helper.description || helper.name,
2047 dports_pos: [ this.port(helper.port) ],
2055 this.state.zones = this.state.zones || [];
2056 push(this.state.zones, zone);
2059 parse_forwarding: function(data) {
2060 let fwd = this.parse_options(data, {
2061 enabled: [ "bool", "1" ],
2064 family: [ "family" ],
2066 src: [ "zone_ref", null, REQUIRED ],
2067 dest: [ "zone_ref", null, REQUIRED ]
2070 if (fwd === false) {
2071 this.warn_section(data, "skipped due to invalid options");
2074 else if (!fwd.enabled) {
2075 this.warn_section(data, "is disabled, ignoring section");
2079 let add_rule = (family, fwd) => {
2084 proto: { any: true }
2087 f.name = fwd.name || sprintf("Accept %s to %s forwarding",
2088 fwd.src.any ? "any" : fwd.src.zone.name,
2089 fwd.dest.any ? "any" : fwd.dest.zone.name);
2091 f.chain = fwd.src.any ? "forward" : sprintf("forward_%s", fwd.src.zone.name);
2094 f.target = "accept";
2096 f.jump_chain = sprintf("accept_to_%s", fwd.dest.zone.name);
2098 this.state.rules = this.state.rules || [];
2099 push(this.state.rules, f);
2103 let family = fwd.family;
2105 /* inherit family restrictions from related zones */
2106 if (family === 0 || family === null) {
2107 let f1 = fwd.src.zone ? fwd.src.zone.family : 0;
2108 let f2 = fwd.dest.zone ? fwd.dest.zone.family : 0;
2110 if (f1 && f2 && f1 != f2) {
2111 this.warn_section(data,
2112 sprintf("references src %s restricted to %s and dest %s restricted to %s, ignoring forwarding",
2113 fwd.src.zone.name, this.nfproto(f1, true),
2114 fwd.dest.zone.name, this.nfproto(f2, true)));
2119 this.warn_section(data,
2120 sprintf("inheriting %s restriction from src %s",
2121 this.nfproto(f1, true), fwd.src.zone.name));
2126 this.warn_section(data,
2127 sprintf("inheriting %s restriction from dest %s",
2128 this.nfproto(f2, true), fwd.dest.zone.name));
2134 add_rule(family, fwd);
2137 fwd.dest.zone.dflags.accept = true;
2140 parse_rule: function(data) {
2141 let rule = this.parse_options(data, {
2142 enabled: [ "bool", "1" ],
2144 name: [ "string", this.section_id(data[".name"]) ],
2145 _name: [ "string", null, DEPRECATED ],
2146 family: [ "family" ],
2148 src: [ "zone_ref" ],
2149 dest: [ "zone_ref" ],
2151 device: [ "device" ],
2152 direction: [ "direction" ],
2154 ipset: [ "setmatch" ],
2155 helper: [ "cthelper" ],
2156 set_helper: [ "cthelper", null, NO_INVERT ],
2158 proto: [ "protocol", "tcpudp", PARSE_LIST | FLATTEN_LIST ],
2160 src_ip: [ "network", null, PARSE_LIST ],
2161 src_mac: [ "mac", null, PARSE_LIST ],
2162 src_port: [ "port", null, PARSE_LIST ],
2164 dest_ip: [ "network", null, PARSE_LIST ],
2165 dest_port: [ "port", null, PARSE_LIST ],
2167 icmp_type: [ "icmptype", null, PARSE_LIST ],
2168 extra: [ "string", null, UNSUPPORTED ],
2171 limit_burst: [ "int" ],
2173 utc_time: [ "bool" ],
2174 start_date: [ "date" ],
2175 stop_date: [ "date" ],
2176 start_time: [ "time" ],
2177 stop_time: [ "time" ],
2178 weekdays: [ "weekdays" ],
2179 monthdays: [ "monthdays", null, UNSUPPORTED ],
2182 set_mark: [ "mark", null, NO_INVERT ],
2183 set_xmark: [ "mark", null, NO_INVERT ],
2186 set_dscp: [ "dscp", null, NO_INVERT ],
2188 counter: [ "bool", "1" ],
2190 target: [ "target" ]
2193 if (rule === false) {
2194 this.warn_section(data, "skipped due to invalid options");
2197 else if (!rule.enabled) {
2198 this.warn_section(data, "is disabled, ignoring section");
2202 if (rule.target in ["helper", "notrack"] && (!rule.src || !rule.src.zone)) {
2203 this.warn_section(data, "must specify a source zone for target '" + rule.target + "'");
2206 else if (rule.target == "dscp" && !rule.set_dscp) {
2207 this.warn_section(data, "must specify option 'set_dscp' for target 'dscp'");
2210 else if (rule.target == "mark" && !rule.set_mark && !rule.set_xmark) {
2211 this.warn_section(data, "must specify option 'set_mark' or 'set_xmark' for target 'mark'");
2214 else if (rule.target == "helper" && !rule.set_helper) {
2215 this.warn_section(data, "must specify option 'set_helper' for target 'helper'");
2222 ipset = filter(this.state.ipsets, s => (s.name == rule.ipset.name))[0];
2225 this.warn_section(data, "references unknown set '" + rule.ipset.name + "'");
2229 if (('inet_service' in ipset.types) && !ensure_tcpudp(rule.proto)) {
2230 this.warn_section(data, "references named set with port match but no UDP/TCP protocol, ignoring section");
2235 let need_src_action_chain = (rule) => (rule.src && rule.src.zone && rule.src.zone.log && rule.target != "accept");
2237 let add_rule = (family, proto, saddrs, daddrs, sports, dports, icmptypes, icmpcodes, ipset, rule) => {
2243 has_addrs: !!(saddrs[0] || saddrs[1] || saddrs[2] || daddrs[0] || daddrs[1] || daddrs[2]),
2244 has_ports: !!(length(sports) || length(dports)),
2245 saddrs_pos: map(saddrs[0], this.cidr),
2246 saddrs_neg: map(saddrs[1], this.cidr),
2247 saddrs_masked: saddrs[2],
2248 daddrs_pos: map(daddrs[0], this.cidr),
2249 daddrs_neg: map(daddrs[1], this.cidr),
2250 daddrs_masked: daddrs[2],
2251 sports_pos: map(filter_pos(sports), this.port),
2252 sports_neg: map(filter_neg(sports), this.port),
2253 dports_pos: map(filter_pos(dports), this.port),
2254 dports_neg: map(filter_neg(dports), this.port),
2255 smacs_pos: map(filter_pos(rule.src_mac), m => m.mac),
2256 smacs_neg: map(filter_neg(rule.src_mac), m => m.mac),
2257 icmp_types: map(icmptypes, i => (family == 4 ? i.type : i.type6)),
2258 icmp_codes: map(icmpcodes, ic => sprintf('%d . %d', (family == 4) ? ic.type : ic.type6, (family == 4) ? ic.code_min : ic.code6_min))
2261 if (!length(r.icmp_types))
2262 delete r.icmp_types;
2264 if (!length(r.icmp_codes))
2265 delete r.icmp_codes;
2269 invert: r.set_mark.invert,
2270 mark: r.set_mark.mark,
2271 mask: r.set_mark.mark | r.set_mark.mask
2277 let set_types = map_setmatch(ipset, rule.ipset, proto.name);
2279 if (set_types !== set_types) {
2280 this.warn_section(data, "destination MAC address matching not supported");
2282 } else if (set_types) {
2283 r.ipset = { ...r.ipset, fields: set_types };
2286 if (r.target == "notrack") {
2287 r.chain = sprintf("notrack_%s", r.src.zone.name);
2288 r.src.zone.dflags.notrack = true;
2290 else if (r.target == "helper") {
2291 r.chain = sprintf("helper_%s", r.src.zone.name);
2292 r.src.zone.dflags.helper = true;
2294 else if (r.target == "mark" || r.target == "dscp") {
2295 if ((r.src?.any && r.dest?.any) || (r.src?.zone && r.dest?.zone))
2296 r.chain = "mangle_forward";
2297 else if (r.src?.any && r.dest?.zone)
2298 r.chain = "mangle_postrouting";
2299 else if (r.src?.zone && r.dest?.any)
2300 r.chain = "mangle_prerouting";
2301 else if (r.src && !r.dest)
2302 r.chain = "mangle_input";
2304 r.chain = "mangle_output";
2307 r.src.zone.dflags[r.target] = true;
2310 r.dest.zone.dflags[r.target] = true;
2317 r.chain = sprintf("%s_%s", r.dest ? "forward" : "input", r.src.zone.name);
2319 r.chain = r.dest ? "forward" : "input";
2322 if (r.dest && !r.src) {
2324 r.chain = sprintf("output_%s", r.dest.zone.name);
2329 if (r.dest && !r.dest.any) {
2330 r.jump_chain = sprintf("%s_to_%s", r.target, r.dest.zone.name);
2331 r.dest.zone.dflags[r.target] = true;
2333 else if (need_src_action_chain(r)) {
2334 r.jump_chain = sprintf("%s_from_%s", r.target, r.src.zone.name);
2335 r.src.zone.dflags[r.target] = true;
2337 else if (r.target == "reject")
2338 r.jump_chain = "handle_reject";
2341 this.state.rules = this.state.rules || [];
2342 push(this.state.rules, r);
2345 for (let proto in rule.proto) {
2346 let sip, dip, sports, dports, itypes4, itypes6;
2347 let family = rule.family;
2349 switch (proto.name) {
2351 itypes4 = filter(rule.icmp_type || [], family_is_ipv4);
2352 itypes6 = filter(rule.icmp_type || [], family_is_ipv6);
2357 itypes6 = filter(rule.icmp_type || [], family_is_ipv6);
2362 sports = rule.src_port;
2363 dports = rule.dest_port;
2367 family = infer_family(family, [
2369 rule.src, "source zone",
2370 rule.dest, "destination zone",
2371 rule.helper, "helper match",
2372 rule.set_helper, "helper to set"
2375 if (type(family) == "string") {
2376 this.warn_section(data, family + ", skipping");
2380 sip = subnets_split_af(rule.src_ip);
2381 dip = subnets_split_af(rule.dest_ip);
2383 let has_ipv4_specifics = (length(sip[0]) || length(dip[0]) || length(itypes4) || rule.dscp !== null);
2384 let has_ipv6_specifics = (length(sip[1]) || length(dip[1]) || length(itypes6) || rule.dscp !== null);
2386 /* if no family was configured, infer target family from IP addresses */
2387 if (family === null) {
2388 if (has_ipv4_specifics && !has_ipv6_specifics)
2390 else if (has_ipv6_specifics && !has_ipv4_specifics)
2396 /* check if there's no AF specific bits, in this case we can do an AF agnostic rule */
2397 if (!family && rule.target != "dscp" && !has_ipv4_specifics && !has_ipv6_specifics) {
2398 add_rule(0, proto, [], [], sports, dports, null, null, null, rule);
2401 /* we need to emit one or two AF specific rules */
2403 if (family == 0 || family == 4) {
2404 let icmp_types = filter(itypes4, i => (i.code_min == 0 && i.code_max == 0xFF));
2405 let icmp_codes = filter(itypes4, i => (i.code_min != 0 || i.code_max != 0xFF));
2407 for (let saddrs in subnets_group_by_masking(sip[0])) {
2408 for (let daddrs in subnets_group_by_masking(dip[0])) {
2409 if (length(icmp_types) || (!length(icmp_types) && !length(icmp_codes)))
2410 add_rule(4, proto, saddrs, daddrs, sports, dports, icmp_types, null, ipset, rule);
2412 if (length(icmp_codes))
2413 add_rule(4, proto, saddrs, daddrs, sports, dports, null, icmp_codes, ipset, rule);
2418 if (family == 0 || family == 6) {
2419 let icmp_types = filter(itypes6, i => (i.code_min == 0 && i.code_max == 0xFF));
2420 let icmp_codes = filter(itypes6, i => (i.code_min != 0 || i.code_max != 0xFF));
2422 for (let saddrs in subnets_group_by_masking(sip[1])) {
2423 for (let daddrs in subnets_group_by_masking(dip[1])) {
2424 if (length(icmp_types) || (!length(icmp_types) && !length(icmp_codes)))
2425 add_rule(6, proto, saddrs, daddrs, sports, dports, icmp_types, null, ipset, rule);
2427 if (length(icmp_codes))
2428 add_rule(6, proto, saddrs, daddrs, sports, dports, null, icmp_codes, ipset, rule);
2436 parse_redirect: function(data) {
2437 let redir = this.parse_options(data, {
2438 enabled: [ "bool", "1" ],
2440 name: [ "string", this.section_id(data[".name"]) ],
2441 _name: [ "string", null, DEPRECATED ],
2442 family: [ "family" ],
2444 src: [ "zone_ref" ],
2445 dest: [ "zone_ref" ],
2447 ipset: [ "setmatch" ],
2448 helper: [ "cthelper", null, NO_INVERT ],
2450 proto: [ "protocol", "tcpudp", PARSE_LIST | FLATTEN_LIST ],
2452 src_ip: [ "network" ],
2453 src_mac: [ "mac", null, PARSE_LIST ],
2454 src_port: [ "port" ],
2456 src_dip: [ "network" ],
2457 src_dport: [ "port" ],
2459 dest_ip: [ "network" ],
2460 dest_port: [ "port" ],
2462 extra: [ "string", null, UNSUPPORTED ],
2465 limit_burst: [ "int" ],
2467 utc_time: [ "bool" ],
2468 start_date: [ "date" ],
2469 stop_date: [ "date" ],
2470 start_time: [ "time" ],
2471 stop_time: [ "time" ],
2472 weekdays: [ "weekdays" ],
2473 monthdays: [ "monthdays", null, UNSUPPORTED ],
2477 reflection: [ "bool", "1" ],
2478 reflection_src: [ "reflection_source", "internal" ],
2480 reflection_zone: [ "zone_ref", null, PARSE_LIST ],
2482 counter: [ "bool", "1" ],
2484 target: [ "target", "dnat" ]
2487 if (redir === false) {
2488 this.warn_section(data, "skipped due to invalid options");
2491 else if (!redir.enabled) {
2492 this.warn_section(data, "is disabled, ignoring section");
2496 if (!(redir.target in ["dnat", "snat"])) {
2497 this.warn_section(data, "has invalid target specified, defaulting to dnat");
2498 redir.target = "dnat";
2504 ipset = filter(this.state.ipsets, s => (s.name == redir.ipset.name))[0];
2507 this.warn_section(data, "references unknown set '" + redir.ipset.name + "'");
2511 if (('inet_service' in ipset.types) && !ensure_tcpudp(redir.proto)) {
2512 this.warn_section(data, "references named set with port match but no UDP/TCP protocol, ignoring section");
2517 let resolve_dest = (redir) => {
2518 for (let zone in this.state.zones) {
2519 for (let zone_addr in zone.related_subnets) {
2520 for (let dest_addr in redir.dest_ip.addrs) {
2521 if (dest_addr.family != zone_addr.family)
2524 let a = apply_mask(dest_addr.addr, zone_addr.mask);
2525 let b = apply_mask(zone_addr.addr, zone_addr.mask);
2543 if (redir.target == "dnat") {
2545 return this.warn_section(data, "has no source specified");
2546 else if (redir.src.any)
2547 return this.warn_section(data, "must not have source '*' for dnat target");
2548 else if (redir.dest_ip && redir.dest_ip.invert)
2549 return this.warn_section(data, "must not specify a negated 'dest_ip' value");
2550 else if (redir.dest_ip && length(filter(redir.dest_ip.addrs, a => a.bits == -1)))
2551 return this.warn_section(data, "must not use non-contiguous masks in 'dest_ip'");
2553 if (!redir.dest && redir.dest_ip && resolve_dest(redir))
2554 this.warn_section(data, "does not specify a destination, assuming '" + redir.dest.zone.name + "'");
2556 if (!redir.dest_port)
2557 redir.dest_port = redir.src_dport;
2559 if (redir.reflection && redir.dest && redir.dest.zone && redir.src.zone.masq) {
2560 redir.dest.zone.dflags.accept = true;
2561 redir.dest.zone.dflags.dnat = true;
2562 redir.dest.zone.dflags.snat = true;
2566 redir.src.zone.dflags.helper = true;
2568 redir.src.zone.dflags[redir.target] = true;
2572 return this.warn_section(data, "has no destination specified");
2573 else if (redir.dest.any)
2574 return this.warn_section(data, "must not have destination '*' for snat target");
2575 else if (!redir.src_dip)
2576 return this.warn_section(data, "has no 'src_dip' option specified");
2577 else if (redir.src_dip.invert)
2578 return this.warn_section(data, "must not specify a negated 'src_dip' value");
2579 else if (length(filter(redir.src_dip.addrs, a => a.bits == -1)))
2580 return this.warn_section(data, "must not use non-contiguous masks in 'src_dip'");
2581 else if (redir.src_mac)
2582 return this.warn_section(data, "must not use 'src_mac' option for snat target");
2583 else if (redir.helper)
2584 return this.warn_section(data, "must not use 'helper' option for snat target");
2586 redir.dest.zone.dflags[redir.target] = true;
2590 let add_rule = (family, proto, saddrs, daddrs, raddrs, sport, dport, rport, ipset, redir) => {
2596 has_addrs: !!(saddrs[0] || saddrs[1] || saddrs[2] || daddrs[0] || daddrs[1] || daddrs[2]),
2597 has_ports: !!(sport || dport || rport),
2598 saddrs_pos: map(saddrs[0], this.cidr),
2599 saddrs_neg: map(saddrs[1], this.cidr),
2600 saddrs_masked: saddrs[2],
2601 daddrs_pos: map(daddrs[0], this.cidr),
2602 daddrs_neg: map(daddrs[1], this.cidr),
2603 daddrs_masked: daddrs[2],
2604 sports_pos: map(filter_pos(to_array(sport)), this.port),
2605 sports_neg: map(filter_neg(to_array(sport)), this.port),
2606 dports_pos: map(filter_pos(to_array(dport)), this.port),
2607 dports_neg: map(filter_neg(to_array(dport)), this.port),
2608 smacs_pos: map(filter_pos(redir.src_mac), m => m.mac),
2609 smacs_neg: map(filter_neg(redir.src_mac), m => m.mac),
2611 raddr: raddrs ? raddrs[0] : null,
2615 let set_types = map_setmatch(ipset, redir.ipset, proto.name);
2617 if (set_types !== set_types) {
2618 this.warn_section(data, "destination MAC address matching not supported");
2620 } else if (set_types) {
2621 r.ipset = { ...r.ipset, fields: set_types };
2626 r.chain = sprintf("dstnat_%s", r.src.zone.name);
2627 r.src.zone.dflags.dnat = true;
2630 r.target = "redirect";
2635 r.chain = sprintf("srcnat_%s", r.dest.zone.name);
2636 r.dest.zone.dflags.snat = true;
2640 this.state.redirects = this.state.redirects || [];
2641 push(this.state.redirects, r);
2644 let to_hostaddr = (a) => {
2645 let bits = (a.family == 4) ? 32 : 128;
2649 addr: apply_mask(a.addr, bits),
2654 for (let proto in redir.proto) {
2655 let sip, dip, rip, iip, eip, refip, sport, dport, rport;
2656 let family = redir.family;
2658 if (proto.name == "ipv6-icmp")
2661 family = infer_family(family, [
2663 redir.src, "source zone",
2664 redir.dest, "destination zone",
2665 redir.helper, "helper match"
2668 if (type(family) == "string") {
2669 this.warn_section(data, family + ", skipping");
2673 switch (redir.target) {
2675 sip = subnets_split_af(redir.src_ip);
2676 dip = subnets_split_af(redir.src_dip);
2677 rip = subnets_split_af(redir.dest_ip);
2679 switch (proto.name) {
2682 sport = redir.src_port;
2683 dport = redir.src_dport;
2684 rport = redir.dest_port;
2688 /* build reflection rules */
2689 if (redir.reflection && (length(rip[0]) || length(rip[1])) && redir.src?.zone && redir.dest?.zone) {
2691 name: redir.name + " (reflection)",
2693 helper: redir.helper,
2695 // XXX: this likely makes no sense for reflection rules
2696 //src_mac: redir.src_mac,
2699 limit_burst: redir.limit_burst,
2701 start_date: redir.start_date,
2702 stop_date: redir.stop_date,
2703 start_time: redir.start_time,
2704 stop_time: redir.stop_time,
2705 weekdays: redir.weekdays,
2710 let eaddrs = length(dip) ? dip : subnets_split_af({ addrs: map(redir.src.zone.related_subnets, to_hostaddr) });
2711 let rzones = length(redir.reflection_zone) ? redir.reflection_zone : [ redir.dest ];
2713 for (let rzone in rzones) {
2714 if (!is_family(rzone, family)) {
2715 this.warn_section(data,
2716 sprintf("is restricted to IPv%d but referenced reflection zone is IPv%d only, skipping",
2717 family, rzone.family));
2721 let iaddrs = subnets_split_af({ addrs: rzone.zone.related_subnets });
2722 let refaddrs = (redir.reflection_src == "internal") ? iaddrs : eaddrs;
2724 for (let i = 0; i <= 1; i++) {
2725 if (redir.src.zone[i ? "masq6" : "masq"] && length(rip[i])) {
2726 let snat_addr = refaddrs[i]?.[0];
2728 /* For internal reflection sources try to find a suitable candiate IP
2729 * among the reflection zone subnets which is within the same subnet
2730 * as the original DNAT destination. If we can't find any matching
2731 * one then simply take the first candidate. */
2732 if (redir.reflection_src == "internal") {
2733 for (let zone_addr in rzone.zone.related_subnets) {
2734 if (zone_addr.family != rip[i][0].family)
2737 let r = apply_mask(rip[i][0].addr, zone_addr.mask);
2738 let a = apply_mask(zone_addr.addr, zone_addr.mask);
2743 snat_addr = zone_addr;
2749 refredir.src = rzone;
2750 refredir.dest = null;
2751 refredir.target = "dnat";
2753 for (let saddrs in subnets_group_by_masking(iaddrs[i]))
2754 for (let daddrs in subnets_group_by_masking(eaddrs[i]))
2755 add_rule(i ? 6 : 4, proto, saddrs, daddrs, rip[i], sport, dport, rport, null, refredir);
2757 refredir.src = null;
2758 refredir.dest = rzone;
2759 refredir.target = "snat";
2761 for (let daddrs in subnets_group_by_masking(rip[i]))
2762 for (let saddrs in subnets_group_by_masking(iaddrs[i]))
2763 add_rule(i ? 6 : 4, proto, saddrs, daddrs, [ to_hostaddr(snat_addr) ], null, rport, null, null, refredir);
2774 sip = subnets_split_af(redir.src_ip);
2775 dip = subnets_split_af(redir.dest_ip);
2776 rip = subnets_split_af(redir.src_dip);
2778 switch (proto.name) {
2781 sport = redir.src_port;
2782 dport = redir.dest_port;
2783 rport = redir.src_dport;
2790 if (length(rip[0]) > 1 || length(rip[1]) > 1)
2791 this.warn_section(data, "specifies multiple rewrite addresses, using only first one");
2793 /* check if there's no AF specific bits, in this case we can do an AF agnostic rule */
2794 if (!family && !length(sip[0]) && !length(sip[1]) && !length(dip[0]) && !length(dip[1]) && !length(rip[0]) && !length(rip[1])) {
2795 /* for backwards compatibility, treat unspecified family as IPv4 unless user explicitly requested any (0) */
2799 add_rule(family, proto, [], [], null, sport, dport, rport, null, redir);
2802 /* we need to emit one or two AF specific rules */
2804 if ((!family || family == 4) && (length(sip[0]) || length(dip[0]) || length(rip[0]))) {
2805 for (let saddrs in subnets_group_by_masking(sip[0]))
2806 for (let daddrs in subnets_group_by_masking(dip[0]))
2807 add_rule(4, proto, saddrs, daddrs, rip[0], sport, dport, rport, ipset, redir);
2810 if ((!family || family == 6) && (length(sip[1]) || length(dip[1]) || length(rip[1]))) {
2811 for (let saddrs in subnets_group_by_masking(sip[1]))
2812 for (let daddrs in subnets_group_by_masking(dip[1]))
2813 add_rule(6, proto, saddrs, daddrs, rip[1], sport, dport, rport, ipset, redir);
2819 parse_nat: function(data) {
2820 let snat = this.parse_options(data, {
2821 enabled: [ "bool", "1" ],
2823 name: [ "string", this.section_id(data[".name"]) ],
2824 family: [ "family", "4" ],
2826 src: [ "zone_ref" ],
2827 device: [ "string" ],
2829 ipset: [ "setmatch", null, UNSUPPORTED ],
2831 proto: [ "protocol", "all", PARSE_LIST | FLATTEN_LIST ],
2833 src_ip: [ "network" ],
2834 src_port: [ "port" ],
2836 snat_ip: [ "network", null, NO_INVERT ],
2837 snat_port: [ "port", null, NO_INVERT ],
2839 dest_ip: [ "network" ],
2840 dest_port: [ "port" ],
2842 extra: [ "string", null, UNSUPPORTED ],
2845 limit_burst: [ "int" ],
2847 connlimit_ports: [ "bool" ],
2849 utc_time: [ "bool" ],
2850 start_date: [ "date" ],
2851 stop_date: [ "date" ],
2852 start_time: [ "time" ],
2853 stop_time: [ "time" ],
2854 weekdays: [ "weekdays" ],
2855 monthdays: [ "monthdays", null, UNSUPPORTED ],
2859 target: [ "target", "masquerade" ]
2862 if (snat === false) {
2863 this.warn_section(data, "skipped due to invalid options");
2866 else if (!snat.enabled) {
2867 this.warn_section(data, "is disabled, ignoring section");
2871 if (!(snat.target in ["accept", "snat", "masquerade"])) {
2872 this.warn_section(data, "has invalid target specified, defaulting to masquerade");
2873 snat.target = "masquerade";
2876 if (snat.target == "snat" && !snat.snat_ip && !snat.snat_port) {
2877 this.warn_section(data, "needs either 'snat_ip' or 'snat_port' for target snat, ignoring section");
2880 else if (snat.target != "snat" && snat.snat_ip) {
2881 this.warn_section(data, "must not use 'snat_ip' for non-snat target, ignoring section");
2884 else if (snat.target != "snat" && snat.snat_port) {
2885 this.warn_section(data, "must not use 'snat_port' for non-snat target, ignoring section");
2889 if ((snat.snat_port || snat.src_port || snat.dest_port) && !ensure_tcpudp(snat.proto)) {
2890 this.warn_section(data, "specifies ports but no UDP/TCP protocol, ignoring section");
2894 if (snat.snat_ip && length(filter(snat.snat_ip.addrs, a => a.bits == -1 || a.invert))) {
2895 this.warn_section(data, "must not use inversion or non-contiguous masks in 'snat_ip', ignoring section");
2899 if (snat.src && snat.src.zone)
2900 snat.src.zone.dflags.snat = true;
2902 let add_rule = (family, proto, saddrs, daddrs, raddrs, sport, dport, rport, snat) => {
2908 has_addrs: !!(saddrs[0] || saddrs[1] || saddrs[2] || daddrs[0] || daddrs[1] || daddrs[2]),
2909 has_ports: !!(sport || dport),
2910 saddrs_pos: map(saddrs[0], this.cidr),
2911 saddrs_neg: map(saddrs[1], this.cidr),
2912 saddrs_masked: saddrs[2],
2913 daddrs_pos: map(daddrs[0], this.cidr),
2914 daddrs_neg: map(daddrs[1], this.cidr),
2915 daddrs_masked: daddrs[2],
2916 sports_pos: map(filter_pos(to_array(sport)), this.port),
2917 sports_neg: map(filter_neg(to_array(sport)), this.port),
2918 dports_pos: map(filter_pos(to_array(dport)), this.port),
2919 dports_neg: map(filter_neg(to_array(dport)), this.port),
2921 raddr: raddrs ? raddrs[0] : null,
2924 chain: (snat.src && snat.src.zone) ? sprintf("srcnat_%s", snat.src.zone.name) : "srcnat"
2927 this.state.redirects = this.state.redirects || [];
2928 push(this.state.redirects, n);
2931 for (let proto in snat.proto) {
2932 let sip, dip, rip, sport, dport, rport;
2933 let family = snat.family;
2935 sip = subnets_split_af(snat.src_ip);
2936 dip = subnets_split_af(snat.dest_ip);
2937 rip = subnets_split_af(snat.snat_ip);
2939 switch (proto.name) {
2942 sport = snat.src_port;
2943 dport = snat.dest_port;
2944 rport = snat.snat_port;
2948 if (length(rip[0]) > 1 || length(rip[1]) > 1)
2949 this.warn_section(data, "specifies multiple rewrite addresses, using only first one");
2951 /* inherit family restrictions from related zones */
2952 if (family === 0 || family === null) {
2953 let f = (rule.src && rule.src.zone) ? rule.src.zone.family : 0;
2956 this.warn_section(r,
2957 sprintf("inheriting %s restriction from src %s",
2958 this.nfproto(f1, true), rule.src.zone.name));
2964 /* if no family was configured, infer target family from IP addresses */
2965 if (family === null) {
2966 if ((length(sip[0]) || length(dip[0]) || length(rip[0])) && !length(sip[1]) && !length(dip[1]) && !length(rip[1]))
2968 else if ((length(sip[1]) || length(dip[1]) || length(rip[1])) && !length(sip[0]) && !length(dip[0]) && !length(rip[0]))
2974 /* check if there's no AF specific bits, in this case we can do an AF agnostic rule */
2975 if (!family && !length(sip[0]) && !length(sip[1]) && !length(dip[0]) && !length(dip[1]) && !length(rip[0]) && !length(rip[1])) {
2976 add_rule(0, proto, [], [], null, sport, dport, rport, snat);
2979 /* we need to emit one or two AF specific rules */
2981 if (family == 0 || family == 4)
2982 for (let saddr in subnets_group_by_masking(sip[0]))
2983 for (let daddr in subnets_group_by_masking(dip[0]))
2984 add_rule(4, proto, saddr, daddr, rip[0], sport, dport, rport, snat);
2986 if (family == 0 || family == 6)
2987 for (let saddr in subnets_group_by_masking(sip[1]))
2988 for (let daddr in subnets_group_by_masking(dip[1]))
2989 add_rule(6, proto, saddr, daddr, rip[1], sport, dport, rport, snat);
2994 parse_ipset: function(data) {
2995 let ipset = this.parse_options(data, {
2996 enabled: [ "bool", "1" ],
2997 reload_set: [ "bool" ],
2998 counters: [ "bool" ],
2999 comment: [ "bool" ],
3001 name: [ "string", null, REQUIRED ],
3002 family: [ "family", "4" ],
3004 storage: [ "string", null, UNSUPPORTED ],
3005 match: [ "ipsettype", null, PARSE_LIST ],
3007 iprange: [ "string", null, UNSUPPORTED ],
3008 portrange: [ "string", null, UNSUPPORTED ],
3010 netmask: [ "int", null, UNSUPPORTED ],
3012 hashsize: [ "int", null, UNSUPPORTED ],
3013 timeout: [ "int", "-1" ],
3015 external: [ "string", null, UNSUPPORTED ],
3017 entry: [ "string", null, PARSE_LIST ],
3018 loadfile: [ "string" ]
3021 if (ipset === false) {
3022 this.warn_section(data, "skipped due to invalid options");
3025 else if (!ipset.enabled) {
3026 this.warn_section(data, "is disabled, ignoring section");
3030 if (ipset.family == 0) {
3031 this.warn_section(data, "must not specify family 'any'");
3034 else if (!length(ipset.match)) {
3035 this.warn_section(data, "has no datatypes assigned");
3039 let dirs = map(ipset.match, m => m[0]),
3040 types = map(ipset.match, m => m[1]),
3043 if ("set" in types) {
3044 this.warn_section(data, "match type 'set' is not supported");
3048 if ("net" in types) {
3049 if (this.kernel < 0x05060000) {
3050 this.warn_section(data, "match type 'net' requires kernel 5.6 or later");
3062 types: map(types, (t) => {
3066 return (ipset.family == 4) ? 'ipv4_addr' : 'ipv6_addr';
3069 return 'ether_addr';
3072 return 'inet_service';
3081 s.entries = filter(map(ipset.entry, (e) => {
3082 let v = self.parse_ipsetentry(e, s);
3085 self.warn_section(data, "ignoring invalid ipset entry '" + e + "'");
3088 }), (e) => (e != null));
3090 this.state.ipsets = this.state.ipsets || [];
3091 push(this.state.ipsets, s);