2 * firewall3 - 3rd OpenWrt UCI firewall implementation
4 * Copyright (C) 2013 Jo-Philipp Wich <jo@mein.io>
6 * Permission to use, copy, modify, and/or distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
24 #define C(f, tbl, tgt, fmt) \
25 { FW3_FAMILY_##f, FW3_TABLE_##tbl, FW3_FLAG_##tgt, fmt }
27 static const struct fw3_chain_spec zone_chains[] = {
28 C(ANY, FILTER, UNSPEC, "zone_%s_input"),
29 C(ANY, FILTER, UNSPEC, "zone_%s_output"),
30 C(ANY, FILTER, UNSPEC, "zone_%s_forward"),
32 C(ANY, FILTER, SRC_ACCEPT, "zone_%s_src_ACCEPT"),
33 C(ANY, FILTER, SRC_REJECT, "zone_%s_src_REJECT"),
34 C(ANY, FILTER, SRC_DROP, "zone_%s_src_DROP"),
36 C(ANY, FILTER, ACCEPT, "zone_%s_dest_ACCEPT"),
37 C(ANY, FILTER, REJECT, "zone_%s_dest_REJECT"),
38 C(ANY, FILTER, DROP, "zone_%s_dest_DROP"),
40 C(V4, NAT, SNAT, "zone_%s_postrouting"),
41 C(V4, NAT, DNAT, "zone_%s_prerouting"),
43 C(ANY, RAW, HELPER, "zone_%s_helper"),
44 C(ANY, RAW, NOTRACK, "zone_%s_notrack"),
46 C(ANY, FILTER, CUSTOM_CHAINS, "input_%s_rule"),
47 C(ANY, FILTER, CUSTOM_CHAINS, "output_%s_rule"),
48 C(ANY, FILTER, CUSTOM_CHAINS, "forwarding_%s_rule"),
50 C(V4, NAT, CUSTOM_CHAINS, "prerouting_%s_rule"),
51 C(V4, NAT, CUSTOM_CHAINS, "postrouting_%s_rule"),
56 enum fw3_zone_logmask {
57 FW3_ZONE_LOG_FILTER = (1 << 0),
58 FW3_ZONE_LOG_MANGLE = (1 << 1),
61 const struct fw3_option fw3_zone_opts[] = {
62 FW3_OPT("enabled", bool, zone, enabled),
64 FW3_OPT("name", string, zone, name),
65 FW3_OPT("family", family, zone, family),
67 FW3_LIST("network", device, zone, networks),
68 FW3_LIST("device", device, zone, devices),
69 FW3_LIST("subnet", network, zone, subnets),
71 FW3_OPT("input", target, zone, policy_input),
72 FW3_OPT("forward", target, zone, policy_forward),
73 FW3_OPT("output", target, zone, policy_output),
75 FW3_OPT("masq", bool, zone, masq),
76 FW3_OPT("masq_allow_invalid", bool, zone, masq_allow_invalid),
77 FW3_LIST("masq_src", network, zone, masq_src),
78 FW3_LIST("masq_dest", network, zone, masq_dest),
80 FW3_OPT("extra", string, zone, extra_src),
81 FW3_OPT("extra_src", string, zone, extra_src),
82 FW3_OPT("extra_dest", string, zone, extra_dest),
84 FW3_OPT("mtu_fix", bool, zone, mtu_fix),
85 FW3_OPT("custom_chains", bool, zone, custom_chains),
87 FW3_OPT("log", int, zone, log),
88 FW3_OPT("log_limit", limit, zone, log_limit),
90 FW3_OPT("auto_helper", bool, zone, auto_helper),
91 FW3_LIST("helper", cthelper, zone, cthelpers),
93 FW3_OPT("__flags_v4", int, zone, flags[0]),
94 FW3_OPT("__flags_v6", int, zone, flags[1]),
96 FW3_LIST("__addrs", address, zone, old_addrs),
102 check_policy(struct uci_element *e, enum fw3_flag *pol, enum fw3_flag def,
105 if (*pol == FW3_FLAG_UNSPEC)
107 warn_elem(e, "has no %s policy specified, using default", name);
110 else if (*pol > FW3_FLAG_DROP)
112 warn_elem(e, "has invalid %s policy, using default", name);
118 check_masq_addrs(struct list_head *head)
120 struct fw3_address *addr;
121 int n_addr = 0, n_failed = 0;
123 list_for_each_entry(addr, head, list)
130 if (!addr->set && addr->resolved)
134 return (n_addr == 0 || n_failed < n_addr);
138 resolve_networks(struct uci_element *e, struct fw3_zone *zone)
140 struct fw3_device *net, *tmp;
142 list_for_each_entry(net, &zone->networks, list)
144 tmp = fw3_ubus_device(net->name);
148 warn_elem(e, "cannot resolve device of network '%s'", net->name);
152 snprintf(tmp->network, sizeof(tmp->network), "%s", net->name);
153 list_add_tail(&tmp->list, &zone->devices);
158 resolve_cthelpers(struct fw3_state *s, struct uci_element *e, struct fw3_zone *zone)
160 struct fw3_cthelpermatch *match;
162 if (list_empty(&zone->cthelpers))
164 if (!zone->masq && zone->auto_helper)
166 fw3_setbit(zone->flags[0], FW3_FLAG_HELPER);
167 fw3_setbit(zone->flags[1], FW3_FLAG_HELPER);
173 list_for_each_entry(match, &zone->cthelpers, list)
177 warn_elem(e, "must not use a negated helper match");
181 match->ptr = fw3_lookup_cthelper(s, match->name);
185 warn_elem(e, "refers to not existing helper '%s'", match->name);
189 if (fw3_is_family(match->ptr, FW3_FAMILY_V4))
190 fw3_setbit(zone->flags[0], FW3_FLAG_HELPER);
192 if (fw3_is_family(match->ptr, FW3_FAMILY_V6))
193 fw3_setbit(zone->flags[1], FW3_FLAG_HELPER);
200 struct fw3_zone *zone;
202 zone = calloc(1, sizeof(*zone));
206 INIT_LIST_HEAD(&zone->networks);
207 INIT_LIST_HEAD(&zone->devices);
208 INIT_LIST_HEAD(&zone->subnets);
209 INIT_LIST_HEAD(&zone->masq_src);
210 INIT_LIST_HEAD(&zone->masq_dest);
211 INIT_LIST_HEAD(&zone->cthelpers);
213 INIT_LIST_HEAD(&zone->old_addrs);
215 zone->enabled = true;
216 zone->auto_helper = true;
217 zone->custom_chains = true;
218 zone->log_limit.rate = 10;
224 fw3_load_zones(struct fw3_state *state, struct uci_package *p)
226 struct uci_section *s;
227 struct uci_element *e;
228 struct fw3_zone *zone;
229 struct fw3_defaults *defs = &state->defaults;
231 INIT_LIST_HEAD(&state->zones);
233 uci_foreach_element(&p->sections, e)
235 s = uci_to_section(e);
237 if (strcmp(s->type, "zone"))
240 zone = fw3_alloc_zone();
245 if (!fw3_parse_options(zone, fw3_zone_opts, s))
246 warn_elem(e, "has invalid options");
254 if (!zone->extra_dest)
255 zone->extra_dest = zone->extra_src;
257 if (!defs->custom_chains && zone->custom_chains)
258 zone->custom_chains = false;
260 if (!defs->auto_helper && zone->auto_helper)
261 zone->auto_helper = false;
263 if (!zone->name || !*zone->name)
265 warn_elem(e, "has no name - ignoring");
270 if (strlen(zone->name) > FW3_ZONE_MAXNAMELEN)
272 warn_elem(e, "must not have a name longer than %u characters",
273 FW3_ZONE_MAXNAMELEN);
278 fw3_ubus_zone_devices(zone);
280 if (list_empty(&zone->networks) && list_empty(&zone->devices) &&
281 list_empty(&zone->subnets) && !zone->extra_src)
283 warn_elem(e, "has no device, network, subnet or extra options");
286 if (!check_masq_addrs(&zone->masq_src))
288 warn_elem(e, "has unresolved masq_src, disabling masq");
292 if (!check_masq_addrs(&zone->masq_dest))
294 warn_elem(e, "has unresolved masq_dest, disabling masq");
298 check_policy(e, &zone->policy_input, defs->policy_input, "input");
299 check_policy(e, &zone->policy_output, defs->policy_output, "output");
300 check_policy(e, &zone->policy_forward, defs->policy_forward, "forward");
302 resolve_networks(e, zone);
306 fw3_setbit(zone->flags[0], FW3_FLAG_SNAT);
309 if (zone->custom_chains)
311 fw3_setbit(zone->flags[0], FW3_FLAG_SNAT);
312 fw3_setbit(zone->flags[0], FW3_FLAG_DNAT);
315 resolve_cthelpers(state, e, zone);
317 fw3_setbit(zone->flags[0], fw3_to_src_target(zone->policy_input));
318 fw3_setbit(zone->flags[0], zone->policy_forward);
319 fw3_setbit(zone->flags[0], zone->policy_output);
321 fw3_setbit(zone->flags[1], fw3_to_src_target(zone->policy_input));
322 fw3_setbit(zone->flags[1], zone->policy_forward);
323 fw3_setbit(zone->flags[1], zone->policy_output);
325 list_add_tail(&zone->list, &state->zones);
331 print_zone_chain(struct fw3_ipt_handle *handle, struct fw3_state *state,
332 bool reload, struct fw3_zone *zone)
335 struct fw3_ipt_rule *r;
336 const struct fw3_chain_spec *c;
338 const char *flt_chains[] = {
341 "forward", "forwarding",
344 const char *nat_chains[] = {
345 "prerouting", "prerouting",
346 "postrouting", "postrouting",
349 if (!fw3_is_family(zone, handle->family))
352 set(zone->flags, handle->family, handle->table);
354 if (zone->custom_chains)
355 set(zone->flags, handle->family, FW3_FLAG_CUSTOM_CHAINS);
357 for (c = zone_chains; c->format; c++)
359 /* don't touch user chains on selective stop */
360 if (reload && c->flag == FW3_FLAG_CUSTOM_CHAINS)
363 if (!fw3_is_family(c, handle->family))
366 if (c->table != handle->table)
370 !fw3_hasbit(zone->flags[handle->family == FW3_FAMILY_V6], c->flag))
373 fw3_ipt_create_chain(handle, c->format, zone->name);
376 if (zone->custom_chains)
378 if (handle->table == FW3_TABLE_FILTER)
380 for (i = 0; i < sizeof(flt_chains)/sizeof(flt_chains[0]); i += 2)
382 r = fw3_ipt_rule_new(handle);
383 fw3_ipt_rule_comment(r, "Custom %s %s rule chain", zone->name, flt_chains[i+1]);
384 fw3_ipt_rule_target(r, "%s_%s_rule", flt_chains[i+1], zone->name);
385 fw3_ipt_rule_append(r, "zone_%s_%s", zone->name, flt_chains[i]);
388 else if (handle->table == FW3_TABLE_NAT)
390 for (i = 0; i < sizeof(nat_chains)/sizeof(nat_chains[0]); i += 2)
392 r = fw3_ipt_rule_new(handle);
393 fw3_ipt_rule_comment(r, "Custom %s %s rule chain", zone->name, nat_chains[i+1]);
394 fw3_ipt_rule_target(r, "%s_%s_rule", nat_chains[i+1], zone->name);
395 fw3_ipt_rule_append(r, "zone_%s_%s", zone->name, nat_chains[i]);
400 set(zone->flags, handle->family, handle->table);
404 print_interface_rule(struct fw3_ipt_handle *handle, struct fw3_state *state,
405 bool reload, struct fw3_zone *zone,
406 struct fw3_device *dev, struct fw3_address *sub)
408 struct fw3_protocol tcp = { .protocol = 6 };
409 struct fw3_ipt_rule *r;
416 const char *chains[] = {
419 "forward", "FORWARD",
422 #define jump_target(t) \
423 ((t == FW3_FLAG_REJECT) ? "reject" : fw3_flag_names[t])
425 if (handle->table == FW3_TABLE_FILTER)
427 for (t = FW3_FLAG_ACCEPT; t <= FW3_FLAG_DROP; t++)
429 if (t > FW3_FLAG_ACCEPT && zone->log & FW3_ZONE_LOG_FILTER)
431 if (has(zone->flags, handle->family, fw3_to_src_target(t)))
433 r = fw3_ipt_rule_create(handle, NULL, dev, NULL, sub, NULL);
435 snprintf(buf, sizeof(buf) - 1, "%s %s in: ",
436 fw3_flag_names[t], zone->name);
438 fw3_ipt_rule_limit(r, &zone->log_limit);
439 fw3_ipt_rule_target(r, "LOG");
440 fw3_ipt_rule_addarg(r, false, "--log-prefix", buf);
441 fw3_ipt_rule_replace(r, "zone_%s_src_%s",
442 zone->name, fw3_flag_names[t]);
445 if (has(zone->flags, handle->family, t))
447 r = fw3_ipt_rule_create(handle, NULL, NULL, dev, NULL, sub);
449 snprintf(buf, sizeof(buf) - 1, "%s %s out: ",
450 fw3_flag_names[t], zone->name);
452 fw3_ipt_rule_limit(r, &zone->log_limit);
453 fw3_ipt_rule_target(r, "LOG");
454 fw3_ipt_rule_addarg(r, false, "--log-prefix", buf);
455 fw3_ipt_rule_replace(r, "zone_%s_dest_%s",
456 zone->name, fw3_flag_names[t]);
460 if (has(zone->flags, handle->family, fw3_to_src_target(t)))
462 r = fw3_ipt_rule_create(handle, NULL, dev, NULL, sub, NULL);
463 fw3_ipt_rule_target(r, jump_target(t));
464 fw3_ipt_rule_extra(r, zone->extra_src);
466 if (t == FW3_FLAG_ACCEPT && !state->defaults.drop_invalid)
467 fw3_ipt_rule_extra(r,
468 "-m conntrack --ctstate NEW,UNTRACKED");
470 fw3_ipt_rule_replace(r, "zone_%s_src_%s", zone->name,
474 if (has(zone->flags, handle->family, t))
476 if (t == FW3_FLAG_ACCEPT &&
477 zone->masq && !zone->masq_allow_invalid)
479 r = fw3_ipt_rule_create(handle, NULL, NULL, dev, NULL, sub);
480 fw3_ipt_rule_extra(r, "-m conntrack --ctstate INVALID");
481 fw3_ipt_rule_comment(r, "Prevent NAT leakage");
482 fw3_ipt_rule_target(r, fw3_flag_names[FW3_FLAG_DROP]);
483 fw3_ipt_rule_replace(r, "zone_%s_dest_%s", zone->name,
487 r = fw3_ipt_rule_create(handle, NULL, NULL, dev, NULL, sub);
488 fw3_ipt_rule_target(r, jump_target(t));
489 fw3_ipt_rule_extra(r, zone->extra_dest);
490 fw3_ipt_rule_replace(r, "zone_%s_dest_%s", zone->name,
495 for (i = 0; i < sizeof(chains)/sizeof(chains[0]); i += 2)
497 if (*chains[i] == 'o')
498 r = fw3_ipt_rule_create(handle, NULL, NULL, dev, NULL, sub);
500 r = fw3_ipt_rule_create(handle, NULL, dev, NULL, sub, NULL);
502 fw3_ipt_rule_target(r, "zone_%s_%s", zone->name, chains[i]);
504 if (*chains[i] == 'o')
505 fw3_ipt_rule_extra(r, zone->extra_dest);
507 fw3_ipt_rule_extra(r, zone->extra_src);
509 fw3_ipt_rule_replace(r, chains[i + 1]);
512 else if (handle->table == FW3_TABLE_NAT)
514 if (has(zone->flags, handle->family, FW3_FLAG_DNAT))
516 r = fw3_ipt_rule_create(handle, NULL, dev, NULL, sub, NULL);
517 fw3_ipt_rule_target(r, "zone_%s_prerouting", zone->name);
518 fw3_ipt_rule_extra(r, zone->extra_src);
519 fw3_ipt_rule_replace(r, "PREROUTING");
522 if (has(zone->flags, handle->family, FW3_FLAG_SNAT))
524 r = fw3_ipt_rule_create(handle, NULL, NULL, dev, NULL, sub);
525 fw3_ipt_rule_target(r, "zone_%s_postrouting", zone->name);
526 fw3_ipt_rule_extra(r, zone->extra_dest);
527 fw3_ipt_rule_replace(r, "POSTROUTING");
530 else if (handle->table == FW3_TABLE_MANGLE)
534 if (zone->log & FW3_ZONE_LOG_MANGLE)
536 snprintf(buf, sizeof(buf) - 1, "MSSFIX %s out: ", zone->name);
538 r = fw3_ipt_rule_create(handle, &tcp, NULL, dev, NULL, sub);
539 fw3_ipt_rule_addarg(r, false, "--tcp-flags", "SYN,RST");
540 fw3_ipt_rule_addarg(r, false, "SYN", NULL);
541 fw3_ipt_rule_limit(r, &zone->log_limit);
542 fw3_ipt_rule_comment(r, "Zone %s MTU fix logging", zone->name);
543 fw3_ipt_rule_target(r, "LOG");
544 fw3_ipt_rule_addarg(r, false, "--log-prefix", buf);
545 fw3_ipt_rule_replace(r, "FORWARD");
548 r = fw3_ipt_rule_create(handle, &tcp, NULL, dev, NULL, sub);
549 fw3_ipt_rule_addarg(r, false, "--tcp-flags", "SYN,RST");
550 fw3_ipt_rule_addarg(r, false, "SYN", NULL);
551 fw3_ipt_rule_comment(r, "Zone %s MTU fixing", zone->name);
552 fw3_ipt_rule_target(r, "TCPMSS");
553 fw3_ipt_rule_addarg(r, false, "--clamp-mss-to-pmtu", NULL);
554 fw3_ipt_rule_replace(r, "FORWARD");
557 else if (handle->table == FW3_TABLE_RAW)
559 bool loopback_dev = (dev != NULL && !dev->any &&
560 !dev->invert && fw3_check_loopback_dev(dev->name));
561 char *chain = loopback_dev || (sub != NULL && !sub->invert && fw3_check_loopback_addr(sub)) ?
562 "OUTPUT" : "PREROUTING";
564 if (has(zone->flags, handle->family, FW3_FLAG_HELPER))
566 r = fw3_ipt_rule_create(handle, NULL, loopback_dev ? NULL : dev, NULL, sub, NULL);
567 fw3_ipt_rule_comment(r, "%s CT helper assignment", zone->name);
568 fw3_ipt_rule_target(r, "zone_%s_helper", zone->name);
569 fw3_ipt_rule_extra(r, zone->extra_src);
570 fw3_ipt_rule_replace(r, chain);
573 if (has(zone->flags, handle->family, FW3_FLAG_NOTRACK))
575 r = fw3_ipt_rule_create(handle, NULL, loopback_dev ? NULL : dev, NULL, sub, NULL);
576 fw3_ipt_rule_comment(r, "%s CT bypass", zone->name);
577 fw3_ipt_rule_target(r, "zone_%s_notrack", zone->name);
578 fw3_ipt_rule_extra(r, zone->extra_src);
579 fw3_ipt_rule_replace(r, chain);
585 print_interface_rules(struct fw3_ipt_handle *handle, struct fw3_state *state,
586 bool reload, struct fw3_zone *zone)
588 struct fw3_device *dev;
589 struct fw3_address *sub;
591 fw3_foreach(dev, &zone->devices)
592 fw3_foreach(sub, &zone->subnets)
594 if (!fw3_is_family(sub, handle->family))
597 if (!dev && !sub && !zone->extra_src && !zone->extra_dest)
600 print_interface_rule(handle, state, reload, zone, dev, sub);
604 static struct fw3_address *
605 next_addr(struct fw3_address *addr, struct list_head *list,
606 enum fw3_family family, bool invert)
609 struct fw3_address *rv;
611 for (p = addr ? addr->list.next : list->next; p != list; p = p->next)
613 rv = list_entry(p, struct fw3_address, list);
615 if (fw3_is_family(rv, family) && rv->set && rv->invert == invert)
623 print_zone_rule(struct fw3_ipt_handle *handle, struct fw3_state *state,
624 bool reload, struct fw3_zone *zone)
626 bool first_src, first_dest;
627 struct fw3_address *msrc;
628 struct fw3_address *mdest;
629 struct fw3_ipt_rule *r;
631 if (!fw3_is_family(zone, handle->family))
634 info(" * Zone '%s'", zone->name);
636 switch (handle->table)
638 case FW3_TABLE_FILTER:
639 if (has(zone->flags, handle->family, FW3_FLAG_DNAT))
641 r = fw3_ipt_rule_new(handle);
642 fw3_ipt_rule_extra(r, "-m conntrack --ctstate DNAT");
643 fw3_ipt_rule_comment(r, "Accept port redirections");
644 fw3_ipt_rule_target(r, fw3_flag_names[FW3_FLAG_ACCEPT]);
645 fw3_ipt_rule_append(r, "zone_%s_input", zone->name);
647 r = fw3_ipt_rule_new(handle);
648 fw3_ipt_rule_extra(r, "-m conntrack --ctstate DNAT");
649 fw3_ipt_rule_comment(r, "Accept port forwards");
650 fw3_ipt_rule_target(r, fw3_flag_names[FW3_FLAG_ACCEPT]);
651 fw3_ipt_rule_append(r, "zone_%s_forward", zone->name);
654 r = fw3_ipt_rule_new(handle);
655 fw3_ipt_rule_target(r, "zone_%s_src_%s", zone->name,
656 fw3_flag_names[zone->policy_input]);
657 fw3_ipt_rule_append(r, "zone_%s_input", zone->name);
659 r = fw3_ipt_rule_new(handle);
660 fw3_ipt_rule_target(r, "zone_%s_dest_%s", zone->name,
661 fw3_flag_names[zone->policy_forward]);
662 fw3_ipt_rule_append(r, "zone_%s_forward", zone->name);
664 r = fw3_ipt_rule_new(handle);
665 fw3_ipt_rule_target(r, "zone_%s_dest_%s", zone->name,
666 fw3_flag_names[zone->policy_output]);
667 fw3_ipt_rule_append(r, "zone_%s_output", zone->name);
672 if (zone->masq && handle->family == FW3_FAMILY_V4)
674 /* for any negated masq_src ip, emit -s addr -j RETURN rules */
676 (msrc = next_addr(msrc, &zone->masq_src,
677 handle->family, true)) != NULL; )
679 msrc->invert = false;
680 r = fw3_ipt_rule_new(handle);
681 fw3_ipt_rule_src_dest(r, msrc, NULL);
682 fw3_ipt_rule_target(r, "RETURN");
683 fw3_ipt_rule_append(r, "zone_%s_postrouting", zone->name);
687 /* for any negated masq_dest ip, emit -d addr -j RETURN rules */
689 (mdest = next_addr(mdest, &zone->masq_dest,
690 handle->family, true)) != NULL; )
692 mdest->invert = false;
693 r = fw3_ipt_rule_new(handle);
694 fw3_ipt_rule_src_dest(r, NULL, mdest);
695 fw3_ipt_rule_target(r, "RETURN");
696 fw3_ipt_rule_append(r, "zone_%s_postrouting", zone->name);
697 mdest->invert = true;
700 /* emit masquerading entries for non-negated addresses
701 and ensure that both src and dest loops run at least once,
702 even if there are no relevant addresses */
703 for (first_src = true, msrc = NULL;
704 (msrc = next_addr(msrc, &zone->masq_src,
705 handle->family, false)) || first_src;
708 for (first_dest = true, mdest = NULL;
709 (mdest = next_addr(mdest, &zone->masq_dest,
710 handle->family, false)) || first_dest;
713 r = fw3_ipt_rule_new(handle);
714 fw3_ipt_rule_src_dest(r, msrc, mdest);
715 fw3_ipt_rule_target(r, "MASQUERADE");
716 fw3_ipt_rule_append(r, "zone_%s_postrouting", zone->name);
723 fw3_print_cthelpers(handle, state, zone);
726 case FW3_TABLE_MANGLE:
730 print_interface_rules(handle, state, reload, zone);
734 fw3_print_zone_chains(struct fw3_ipt_handle *handle, struct fw3_state *state,
737 struct fw3_zone *zone;
739 list_for_each_entry(zone, &state->zones, list)
740 print_zone_chain(handle, state, reload, zone);
744 fw3_print_zone_rules(struct fw3_ipt_handle *handle, struct fw3_state *state,
747 struct fw3_zone *zone;
749 list_for_each_entry(zone, &state->zones, list)
750 print_zone_rule(handle, state, reload, zone);
754 fw3_flush_zones(struct fw3_ipt_handle *handle, struct fw3_state *state,
757 struct fw3_zone *z, *tmp;
758 const struct fw3_chain_spec *c;
761 list_for_each_entry_safe(z, tmp, &state->zones, list)
763 if (!has(z->flags, handle->family, handle->table))
766 for (c = zone_chains; c->format; c++)
768 /* don't touch user chains on selective stop */
769 if (reload && c->flag == FW3_FLAG_CUSTOM_CHAINS)
772 if (!fw3_is_family(c, handle->family))
775 if (c->table != handle->table)
778 if (c->flag && !has(z->flags, handle->family, c->flag))
781 snprintf(chain, sizeof(chain), c->format, z->name);
782 fw3_ipt_flush_chain(handle, chain);
784 /* keep certain basic chains that do not depend on any settings to
785 avoid purging unrelated user rules pointing to them */
786 if (reload && !c->flag)
789 fw3_ipt_delete_chain(handle, chain);
792 del(z->flags, handle->family, handle->table);
797 fw3_hotplug_zones(struct fw3_state *state, bool add)
800 struct fw3_device *d;
802 list_for_each_entry(z, &state->zones, list)
804 if (add != fw3_hasbit(z->flags[0], FW3_FLAG_HOTPLUG))
806 list_for_each_entry(d, &z->devices, list)
807 fw3_hotplug(add, z, d);
810 fw3_setbit(z->flags[0], FW3_FLAG_HOTPLUG);
812 fw3_delbit(z->flags[0], FW3_FLAG_HOTPLUG);
818 fw3_lookup_zone(struct fw3_state *state, const char *name)
822 if (list_empty(&state->zones))
825 list_for_each_entry(z, &state->zones, list)
827 if (strcmp(z->name, name))
837 fw3_resolve_zone_addresses(struct fw3_zone *zone, struct fw3_address *addr)
839 struct fw3_device *net;
840 struct fw3_address *cur, *tmp;
841 struct list_head *all;
843 all = calloc(1, sizeof(*all));
849 if (addr && addr->set)
851 tmp = malloc(sizeof(*tmp));
856 list_add_tail(&tmp->list, all);
861 list_for_each_entry(net, &zone->networks, list)
862 fw3_ubus_address(all, net->name);
864 list_for_each_entry(cur, &zone->subnets, list)
866 tmp = malloc(sizeof(*tmp));
872 list_add_tail(&tmp->list, all);