2 * firewall3 - 3rd OpenWrt UCI firewall implementation
4 * Copyright (C) 2013 Jo-Philipp Wich <jow@openwrt.org>
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.
22 static struct option base_opts[] = {
23 { .name = "match", .has_arg = 1, .val = 'm' },
24 { .name = "jump", .has_arg = 1, .val = 'j' },
25 { .name = "append", .has_arg = 1, .val = 'A' },
29 static struct xtables_globals xtg = {
31 .program_version = "4",
32 .orig_opts = base_opts,
35 static struct xtables_globals xtg6 = {
37 .program_version = "6",
38 .orig_opts = base_opts,
41 /* Required by certain extensions like SNAT and DNAT */
42 int kernel_version = 0;
45 get_kernel_version(void)
47 static struct utsname uts;
48 int x = 0, y = 0, z = 0;
50 if (uname(&uts) == -1)
51 sprintf(uts.release, "3.0.0");
53 sscanf(uts.release, "%d.%d.%d", &x, &y, &z);
54 kernel_version = 0x10000 * x + 0x100 * y + z;
58 #define __ipt_module(x) libxt_##x##_init, libipt_##x##_init, libip6t_##x##_init,
60 static void fw3_init_extensions(void)
63 void (*initfuncs[])(void) = { FW3_IPT_MODULES };
65 for (i = 0; i < sizeof(initfuncs)/sizeof(initfuncs[0]); i++)
70 struct fw3_ipt_handle *
71 fw3_ipt_open(enum fw3_family family, enum fw3_table table)
73 struct fw3_ipt_handle *h;
75 h = fw3_alloc(sizeof(*h));
79 if (family == FW3_FAMILY_V6)
81 h->family = FW3_FAMILY_V6;
83 h->handle = ip6tc_init(fw3_flag_names[table]);
85 xtables_set_params(&xtg6);
86 xtables_set_nfproto(NFPROTO_IPV6);
90 h->family = FW3_FAMILY_V4;
92 h->handle = iptc_init(fw3_flag_names[table]);
94 xtables_set_params(&xtg);
95 xtables_set_nfproto(NFPROTO_IPV4);
104 xtables_pending_matches = NULL;
105 xtables_pending_targets = NULL;
107 xtables_matches = NULL;
108 xtables_targets = NULL;
110 fw3_init_extensions();
116 debug(struct fw3_ipt_handle *h, const char *fmt, ...)
120 printf("%s -t %s ", (h->family == FW3_FAMILY_V6) ? "ip6tables" : "iptables",
121 fw3_flag_names[h->table]);
129 fw3_ipt_set_policy(struct fw3_ipt_handle *h, const char *chain,
130 enum fw3_flag policy)
133 debug(h, "-P %s %s\n", chain, fw3_flag_names[policy]);
135 if (h->family == FW3_FAMILY_V6)
136 ip6tc_set_policy(chain, fw3_flag_names[policy], NULL, h->handle);
138 iptc_set_policy(chain, fw3_flag_names[policy], NULL, h->handle);
142 fw3_ipt_delete_chain(struct fw3_ipt_handle *h, const char *chain)
146 debug(h, "-F %s\n", chain);
147 debug(h, "-X %s\n", chain);
150 if (h->family == FW3_FAMILY_V6)
152 if (ip6tc_flush_entries(chain, h->handle))
153 ip6tc_delete_chain(chain, h->handle);
157 if (iptc_flush_entries(chain, h->handle))
158 iptc_delete_chain(chain, h->handle);
163 fw3_ipt_delete_rules(struct fw3_ipt_handle *h, const char *target)
166 const struct ipt_entry *e;
167 const struct ip6t_entry *e6;
172 if (h->family == FW3_FAMILY_V6)
174 for (chain = ip6tc_first_chain(h->handle);
176 chain = ip6tc_next_chain(h->handle))
181 for (num = 0, e6 = ip6tc_first_rule(chain, h->handle);
183 num++, e6 = ip6tc_next_rule(e6, h->handle))
185 t = ip6tc_get_target(e6, h->handle);
187 if (*t && !strcmp(t, target))
190 debug(h, "-D %s %u\n", chain, num + 1);
192 ip6tc_delete_num_entry(chain, num, h->handle);
202 for (chain = iptc_first_chain(h->handle);
204 chain = iptc_next_chain(h->handle))
209 for (num = 0, e = iptc_first_rule(chain, h->handle);
211 num++, e = iptc_next_rule(e, h->handle))
213 t = iptc_get_target(e, h->handle);
215 if (*t && !strcmp(t, target))
218 debug(h, "-D %s %u\n", chain, num + 1);
220 iptc_delete_num_entry(chain, num, h->handle);
231 fw3_ipt_create_chain(struct fw3_ipt_handle *h, const char *fmt, ...)
237 vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
241 debug(h, "-N %s\n", buf);
243 iptc_create_chain(buf, h->handle);
247 fw3_ipt_flush(struct fw3_ipt_handle *h)
251 if (h->family == FW3_FAMILY_V6)
253 for (chain = ip6tc_first_chain(h->handle);
255 chain = ip6tc_next_chain(h->handle))
257 ip6tc_flush_entries(chain, h->handle);
260 for (chain = ip6tc_first_chain(h->handle);
262 chain = ip6tc_next_chain(h->handle))
264 ip6tc_delete_chain(chain, h->handle);
269 for (chain = iptc_first_chain(h->handle);
271 chain = iptc_next_chain(h->handle))
273 iptc_flush_entries(chain, h->handle);
276 for (chain = iptc_first_chain(h->handle);
278 chain = iptc_next_chain(h->handle))
280 iptc_delete_chain(chain, h->handle);
286 fw3_ipt_commit(struct fw3_ipt_handle *h)
290 if (h->family == FW3_FAMILY_V6)
292 rv = ip6tc_commit(h->handle);
294 fprintf(stderr, "ip6tc_commit(): %s\n", ip6tc_strerror(errno));
298 rv = iptc_commit(h->handle);
300 fprintf(stderr, "iptc_commit(): %s\n", iptc_strerror(errno));
306 struct fw3_ipt_rule *
307 fw3_ipt_rule_new(struct fw3_ipt_handle *h)
309 struct fw3_ipt_rule *r;
311 r = fw3_alloc(sizeof(*r));
314 r->argv = fw3_alloc(sizeof(char *));
315 r->argv[r->argc++] = "fw3";
322 is_chain(struct fw3_ipt_handle *h, const char *name)
324 if (h->family == FW3_FAMILY_V6)
325 return ip6tc_is_chain(name, h->handle);
327 return iptc_is_chain(name, h->handle);
331 get_protoname(struct fw3_ipt_rule *r)
333 const struct xtables_pprot *pp;
336 for (pp = xtables_chain_protos; pp->name; pp++)
337 if (pp->num == r->protocol)
338 return (char *)pp->name;
343 static struct xtables_match *
344 find_match(struct fw3_ipt_rule *r, const char *name)
346 return xtables_find_match(name, XTF_TRY_LOAD, &r->matches);
350 init_match(struct fw3_ipt_rule *r, struct xtables_match *m, bool no_clone)
353 struct xtables_globals *g;
358 s = XT_ALIGN(sizeof(struct xt_entry_match)) + m->size;
362 fw3_xt_set_match_name(m);
364 m->m->u.user.revision = m->revision;
365 m->m->u.match_size = s;
367 /* free previous userspace data */
368 fw3_xt_free_match_udata(m);
373 /* don't merge options if no_clone is set and this match is a clone */
374 if (no_clone && (m == m->next))
377 /* merge option table */
378 g = (r->h->family == FW3_FAMILY_V6) ? &xtg6 : &xtg;
379 fw3_xt_merge_match_options(g, m);
383 need_protomatch(struct fw3_ipt_rule *r, const char *pname)
388 if (!xtables_find_match(pname, XTF_DONT_LOAD, NULL))
391 return !r->protocol_loaded;
394 static struct xtables_match *
395 load_protomatch(struct fw3_ipt_rule *r)
397 const char *pname = get_protoname(r);
399 if (!need_protomatch(r, pname))
402 return find_match(r, pname);
405 static struct xtables_target *
406 get_target(struct fw3_ipt_rule *r, const char *name)
409 struct xtables_target *t;
410 struct xtables_globals *g;
412 bool chain = is_chain(r->h, name);
415 t = xtables_find_target(XT_STANDARD_TARGET, XTF_LOAD_MUST_SUCCEED);
417 t = xtables_find_target(name, XTF_TRY_LOAD);
422 s = XT_ALIGN(sizeof(struct xt_entry_target)) + t->size;
425 fw3_xt_set_target_name(t, name);
427 t->t->u.user.revision = t->revision;
428 t->t->u.target_size = s;
430 /* free previous userspace data */
431 fw3_xt_free_target_udata(t);
436 /* merge option table */
437 g = (r->h->family == FW3_FAMILY_V6) ? &xtg6 : &xtg;
438 fw3_xt_merge_target_options(g, t);
446 fw3_ipt_rule_proto(struct fw3_ipt_rule *r, struct fw3_protocol *proto)
450 if (!proto || proto->any)
453 pr = proto->protocol;
455 if (r->h->family == FW3_FAMILY_V6)
460 r->e6.ipv6.proto = pr;
461 r->e6.ipv6.flags |= IP6T_F_PROTO;
464 r->e6.ipv6.invflags |= XT_INV_PROTO;
471 r->e.ip.invflags |= XT_INV_PROTO;
478 fw3_ipt_rule_in_out(struct fw3_ipt_rule *r,
479 struct fw3_device *in, struct fw3_device *out)
481 if (r->h->family == FW3_FAMILY_V6)
485 xtables_parse_interface(in->name, r->e6.ipv6.iniface,
486 r->e6.ipv6.iniface_mask);
489 r->e6.ipv6.invflags |= IP6T_INV_VIA_IN;
492 if (out && !out->any)
494 xtables_parse_interface(out->name, r->e6.ipv6.outiface,
495 r->e6.ipv6.outiface_mask);
498 r->e6.ipv6.invflags |= IP6T_INV_VIA_OUT;
505 xtables_parse_interface(in->name, r->e.ip.iniface,
506 r->e.ip.iniface_mask);
509 r->e.ip.invflags |= IPT_INV_VIA_IN;
512 if (out && !out->any)
514 xtables_parse_interface(out->name, r->e.ip.outiface,
515 r->e.ip.outiface_mask);
518 r->e.ip.invflags |= IPT_INV_VIA_OUT;
525 ip4prefix2mask(int prefix, struct in_addr *mask)
527 mask->s_addr = htonl(~((1 << (32 - prefix)) - 1));
531 ip6prefix2mask(int prefix, struct in6_addr *mask)
533 char *p = (char *)mask;
537 memset(p, 0xff, prefix / 8);
538 memset(p + (prefix / 8) + 1, 0, (128 - prefix) / 8);
539 p[prefix / 8] = 0xff << (8 - (prefix & 7));
543 memset(mask, 0, sizeof(*mask));
548 fw3_ipt_rule_src_dest(struct fw3_ipt_rule *r,
549 struct fw3_address *src, struct fw3_address *dest)
553 if ((src && src->range) || (dest && dest->range))
555 fw3_ipt_rule_addarg(r, false, "-m", "iprange");
562 fw3_ipt_rule_addarg(r, src->invert, "--src-range",
563 fw3_address_to_string(src, false));
565 else if (r->h->family == FW3_FAMILY_V6)
567 r->e6.ipv6.src = src->address.v6;
568 ip6prefix2mask(src->mask, &r->e6.ipv6.smsk);
570 for (i = 0; i < 4; i++)
571 r->e6.ipv6.src.s6_addr32[i] &= r->e6.ipv6.smsk.s6_addr32[i];
574 r->e6.ipv6.invflags |= IP6T_INV_SRCIP;
578 r->e.ip.src = src->address.v4;
579 ip4prefix2mask(src->mask, &r->e.ip.smsk);
581 r->e.ip.src.s_addr &= r->e.ip.smsk.s_addr;
584 r->e.ip.invflags |= IPT_INV_SRCIP;
588 if (dest && dest->set)
592 fw3_ipt_rule_addarg(r, dest->invert, "--dst-range",
593 fw3_address_to_string(dest, false));
595 else if (r->h->family == FW3_FAMILY_V6)
597 r->e6.ipv6.dst = dest->address.v6;
598 ip6prefix2mask(dest->mask, &r->e6.ipv6.dmsk);
600 for (i = 0; i < 4; i++)
601 r->e6.ipv6.dst.s6_addr32[i] &= r->e6.ipv6.dmsk.s6_addr32[i];
604 r->e6.ipv6.invflags |= IP6T_INV_DSTIP;
608 r->e.ip.dst = dest->address.v4;
609 ip4prefix2mask(dest->mask, &r->e.ip.dmsk);
611 r->e.ip.dst.s_addr &= r->e.ip.dmsk.s_addr;
614 r->e.ip.invflags |= IPT_INV_DSTIP;
620 fw3_ipt_rule_sport_dport(struct fw3_ipt_rule *r,
621 struct fw3_port *sp, struct fw3_port *dp)
623 char buf[sizeof("65535:65535\0")];
625 if ((!sp || !sp->set) && (!dp || !dp->set))
628 if (!get_protoname(r))
633 if (sp->port_min == sp->port_max)
634 sprintf(buf, "%u", sp->port_min);
636 sprintf(buf, "%u:%u", sp->port_min, sp->port_max);
638 fw3_ipt_rule_addarg(r, sp->invert, "--sport", buf);
643 if (dp->port_min == dp->port_max)
644 sprintf(buf, "%u", dp->port_min);
646 sprintf(buf, "%u:%u", dp->port_min, dp->port_max);
648 fw3_ipt_rule_addarg(r, dp->invert, "--dport", buf);
653 fw3_ipt_rule_mac(struct fw3_ipt_rule *r, struct fw3_mac *mac)
658 fw3_ipt_rule_addarg(r, false, "-m", "mac");
659 fw3_ipt_rule_addarg(r, mac->invert, "--mac-source", ether_ntoa(&mac->mac));
663 fw3_ipt_rule_icmptype(struct fw3_ipt_rule *r, struct fw3_icmptype *icmp)
665 char buf[sizeof("255/255\0")];
670 if (r->h->family == FW3_FAMILY_V6)
672 if (icmp->code6_min == 0 && icmp->code6_max == 0xFF)
673 sprintf(buf, "%u", icmp->type6);
675 sprintf(buf, "%u/%u", icmp->type6, icmp->code6_min);
677 fw3_ipt_rule_addarg(r, icmp->invert, "--icmpv6-type", buf);
681 if (icmp->code_min == 0 && icmp->code_max == 0xFF)
682 sprintf(buf, "%u", icmp->type);
684 sprintf(buf, "%u/%u", icmp->type, icmp->code_min);
686 fw3_ipt_rule_addarg(r, icmp->invert, "--icmp-type", buf);
691 fw3_ipt_rule_limit(struct fw3_ipt_rule *r, struct fw3_limit *limit)
693 char buf[sizeof("-4294967296/second\0")];
695 if (!limit || limit->rate <= 0)
698 fw3_ipt_rule_addarg(r, false, "-m", "limit");
700 sprintf(buf, "%u/%s", limit->rate, fw3_limit_units[limit->unit]);
701 fw3_ipt_rule_addarg(r, limit->invert, "--limit", buf);
703 if (limit->burst > 0)
705 sprintf(buf, "%u", limit->burst);
706 fw3_ipt_rule_addarg(r, limit->invert, "--limit-burst", buf);
711 fw3_ipt_rule_ipset(struct fw3_ipt_rule *r, struct fw3_ipset *ipset,
714 char buf[sizeof("dst,dst,dst\0")];
717 struct fw3_ipset_datatype *type;
722 list_for_each_entry(type, &ipset->datatypes, list)
727 p += sprintf(p, "%s", type->dest ? "dst" : "src");
730 fw3_ipt_rule_addarg(r, false, "-m", "set");
732 fw3_ipt_rule_addarg(r, invert, "--match-set",
733 ipset->external ? ipset->external : ipset->name);
735 fw3_ipt_rule_addarg(r, false, buf, NULL);
739 fw3_ipt_rule_time(struct fw3_ipt_rule *r, struct fw3_time *time)
742 struct tm empty = { 0 };
744 char buf[84]; /* sizeof("1,2,3,...,30,31\0") */
747 bool d1 = memcmp(&time->datestart, &empty, sizeof(empty));
748 bool d2 = memcmp(&time->datestop, &empty, sizeof(empty));
750 if (!d1 && !d2 && !time->timestart && !time->timestop &&
751 !(time->monthdays & 0xFFFFFFFE) && !(time->weekdays & 0xFE))
756 fw3_ipt_rule_addarg(r, false, "-m", "time");
759 fw3_ipt_rule_addarg(r, false, "--utc", NULL);
763 strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S", &time->datestart);
764 fw3_ipt_rule_addarg(r, false, "--datestart", buf);
769 strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S", &time->datestop);
770 fw3_ipt_rule_addarg(r, false, "--datestop", buf);
775 sprintf(buf, "%02d:%02d:%02d",
776 time->timestart / 3600,
777 time->timestart % 3600 / 60,
778 time->timestart % 60);
780 fw3_ipt_rule_addarg(r, false, "--timestart", buf);
785 sprintf(buf, "%02d:%02d:%02d",
786 time->timestop / 3600,
787 time->timestop % 3600 / 60,
788 time->timestop % 60);
790 fw3_ipt_rule_addarg(r, false, "--timestop", buf);
793 if (time->monthdays & 0xFFFFFFFE)
795 for (i = 1, p = buf; i < 32; i++)
797 if (hasbit(time->monthdays, i))
802 p += sprintf(p, "%u", i);
806 fw3_ipt_rule_addarg(r, hasbit(time->monthdays, 0), "--monthdays", buf);
809 if (time->weekdays & 0xFE)
811 for (i = 1, p = buf; i < 8; i++)
813 if (hasbit(time->weekdays, i))
818 p += sprintf(p, "%u", i);
822 fw3_ipt_rule_addarg(r, hasbit(time->weekdays, 0), "--weekdays", buf);
827 fw3_ipt_rule_mark(struct fw3_ipt_rule *r, struct fw3_mark *mark)
829 char buf[sizeof("0xFFFFFFFF/0xFFFFFFFF\0")];
831 if (!mark || !mark->set)
834 if (mark->mask < 0xFFFFFFFF)
835 sprintf(buf, "0x%x/0x%x", mark->mark, mark->mask);
837 sprintf(buf, "0x%x", mark->mark);
839 fw3_ipt_rule_addarg(r, false, "-m", "mark");
840 fw3_ipt_rule_addarg(r, mark->invert, "--mark", buf);
844 fw3_ipt_rule_comment(struct fw3_ipt_rule *r, const char *fmt, ...)
853 vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
856 fw3_ipt_rule_addarg(r, false, "-m", "comment");
857 fw3_ipt_rule_addarg(r, false, "--comment", buf);
861 fw3_ipt_rule_extra(struct fw3_ipt_rule *r, const char *extra)
865 if (!extra || !*extra)
868 s = fw3_strdup(extra);
870 for (p = strtok(s, " \t"); p; p = strtok(NULL, " \t"))
872 tmp = realloc(r->argv, (r->argc + 1) * sizeof(*r->argv));
878 r->argv[r->argc++] = fw3_strdup(p);
885 rule_print6(struct ip6t_entry *e)
887 char buf[INET6_ADDRSTRLEN];
890 if (e->ipv6.flags & IP6T_F_PROTO)
892 if (e->ipv6.flags & XT_INV_PROTO)
895 pname = get_protoname(container_of(e, struct fw3_ipt_rule, e6));
898 printf(" -p %s", pname);
900 printf(" -p %u", e->ipv6.proto);
903 if (e->ipv6.iniface[0])
905 if (e->ipv6.flags & IP6T_INV_VIA_IN)
908 printf(" -i %s", e->ipv6.iniface);
911 if (e->ipv6.outiface[0])
913 if (e->ipv6.flags & IP6T_INV_VIA_OUT)
916 printf(" -o %s", e->ipv6.outiface);
919 if (memcmp(&e->ipv6.src, &in6addr_any, sizeof(struct in6_addr)))
921 if (e->ipv6.flags & IP6T_INV_SRCIP)
924 printf(" -s %s/%u", inet_ntop(AF_INET6, &e->ipv6.src, buf, sizeof(buf)),
925 xtables_ip6mask_to_cidr(&e->ipv6.smsk));
928 if (memcmp(&e->ipv6.dst, &in6addr_any, sizeof(struct in6_addr)))
930 if (e->ipv6.flags & IP6T_INV_DSTIP)
933 printf(" -d %s/%u", inet_ntop(AF_INET6, &e->ipv6.dst, buf, sizeof(buf)),
934 xtables_ip6mask_to_cidr(&e->ipv6.dmsk));
939 rule_print4(struct ipt_entry *e)
941 struct in_addr in_zero = { 0 };
942 char buf[sizeof("255.255.255.255\0")];
947 if (e->ip.flags & XT_INV_PROTO)
950 pname = get_protoname(container_of(e, struct fw3_ipt_rule, e));
953 printf(" -p %s", pname);
955 printf(" -p %u", e->ip.proto);
958 if (e->ip.iniface[0])
960 if (e->ip.flags & IPT_INV_VIA_IN)
963 printf(" -i %s", e->ip.iniface);
966 if (e->ip.outiface[0])
968 if (e->ip.flags & IPT_INV_VIA_OUT)
971 printf(" -o %s", e->ip.outiface);
974 if (memcmp(&e->ip.src, &in_zero, sizeof(struct in_addr)))
976 if (e->ip.flags & IPT_INV_SRCIP)
979 printf(" -s %s/%u", inet_ntop(AF_INET, &e->ip.src, buf, sizeof(buf)),
980 xtables_ipmask_to_cidr(&e->ip.smsk));
983 if (memcmp(&e->ip.dst, &in_zero, sizeof(struct in_addr)))
985 if (e->ip.flags & IPT_INV_DSTIP)
988 printf(" -d %s/%u", inet_ntop(AF_INET, &e->ip.dst, buf, sizeof(buf)),
989 xtables_ipmask_to_cidr(&e->ip.dmsk));
994 rule_print(struct fw3_ipt_rule *r, const char *chain)
996 struct xtables_rule_match *rm;
997 struct xtables_match *m;
998 struct xtables_target *t;
1000 debug(r->h, "-A %s", chain);
1002 if (r->h->family == FW3_FAMILY_V6)
1003 rule_print6(&r->e6);
1007 for (rm = r->matches; rm; rm = rm->next)
1010 printf(" -m %s", fw3_xt_get_match_name(m));
1013 m->save(&r->e.ip, m->m);
1019 printf(" -j %s", fw3_xt_get_target_name(t));
1022 t->save(&r->e.ip, t->t);
1029 parse_option(struct fw3_ipt_rule *r, int optc, bool inv)
1031 struct xtables_rule_match *m;
1032 struct xtables_match *em;
1034 /* is a target option */
1035 if (r->target && fw3_xt_has_target_parse(r->target) &&
1036 optc >= r->target->option_offset &&
1037 optc < (r->target->option_offset + 256))
1039 xtables_option_tpcall(optc, r->argv, inv, r->target, &r->e);
1043 /* try to dispatch argument to one of the match parsers */
1044 for (m = r->matches; m; m = m->next)
1048 if (m->completed || !fw3_xt_has_match_parse(em))
1051 if (optc < em->option_offset ||
1052 optc >= (em->option_offset + 256))
1055 xtables_option_mpcall(optc, r->argv, inv, em, &r->e);
1059 /* unhandled option, might belong to a protocol match */
1060 if ((em = load_protomatch(r)) != NULL)
1062 init_match(r, em, false);
1064 r->protocol_loaded = true;
1071 fprintf(stderr, "parse_option(): option '%s' needs argument\n",
1075 fprintf(stderr, "parse_option(): unknown option '%s'\n",
1082 fw3_ipt_rule_addarg(struct fw3_ipt_rule *r, bool inv,
1083 const char *k, const char *v)
1091 n = inv + !!k + !!v;
1092 tmp = realloc(r->argv, (r->argc + n) * sizeof(*tmp));
1100 r->argv[r->argc++] = fw3_strdup("!");
1102 r->argv[r->argc++] = fw3_strdup(k);
1105 r->argv[r->argc++] = fw3_strdup(v);
1109 fw3_ipt_rule_append(struct fw3_ipt_rule *r, const char *fmt, ...)
1112 struct xtables_rule_match *m;
1113 struct xtables_match *em;
1114 struct xtables_target *et;
1115 struct xtables_globals *g;
1116 struct ipt_entry *e;
1117 struct ip6t_entry *e6;
1125 vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
1128 g = (r->h->family == FW3_FAMILY_V6) ? &xtg6 : &xtg;
1129 g->opts = g->orig_opts;
1134 while ((optc = getopt_long(r->argc, r->argv, "m:j:", g->opts, NULL)) != -1)
1139 em = find_match(r, optarg);
1143 fprintf(stderr, "fw3_ipt_rule_append(): Can't find match '%s'\n", optarg);
1147 init_match(r, em, true);
1151 et = get_target(r, optarg);
1155 fprintf(stderr, "fw3_ipt_rule_append(): Can't find target '%s'\n", optarg);
1162 if ((optarg[0] == '!') && (optarg[1] == '\0'))
1168 fprintf(stderr, "fw3_ipt_rule_append(): Bad argument '%s'\n", optarg);
1172 if (parse_option(r, optc, inv))
1180 for (m = r->matches; m; m = m->next)
1181 xtables_option_mfcall(m->match);
1184 xtables_option_tfcall(r->target);
1189 if (r->h->family == FW3_FAMILY_V6)
1191 s = XT_ALIGN(sizeof(struct ip6t_entry));
1193 for (m = r->matches; m; m = m->next)
1194 s += m->match->m->u.match_size;
1196 e6 = fw3_alloc(s + r->target->t->u.target_size);
1198 memcpy(e6, &r->e6, sizeof(struct ip6t_entry));
1200 e6->target_offset = s;
1201 e6->next_offset = s + r->target->t->u.target_size;
1205 for (m = r->matches; m; m = m->next)
1207 memcpy(e6->elems + s, m->match->m, m->match->m->u.match_size);
1208 s += m->match->m->u.match_size;
1211 memcpy(e6->elems + s, r->target->t, r->target->t->u.target_size);
1212 ip6tc_append_entry(buf, e6, r->h->handle);
1217 s = XT_ALIGN(sizeof(struct ipt_entry));
1219 for (m = r->matches; m; m = m->next)
1220 s += m->match->m->u.match_size;
1222 e = fw3_alloc(s + r->target->t->u.target_size);
1224 memcpy(e, &r->e, sizeof(struct ipt_entry));
1226 e->target_offset = s;
1227 e->next_offset = s + r->target->t->u.target_size;
1231 for (m = r->matches; m; m = m->next)
1233 memcpy(e->elems + s, m->match->m, m->match->m->u.match_size);
1234 s += m->match->m->u.match_size;
1237 memcpy(e->elems + s, r->target->t, r->target->t->u.target_size);
1239 if (!iptc_append_entry(buf, e, r->h->handle))
1240 fprintf(stderr, "iptc_append_entry(): %s\n", iptc_strerror(errno));
1246 for (i = 1; i < r->argc; i++)
1251 xtables_rule_matches_free(&r->matches);
1258 /* reset all targets and matches */
1259 for (em = xtables_matches; em; em = em->next)
1262 for (et = xtables_targets; et; et = et->next)
1268 xtables_free_opts(1);
1271 struct fw3_ipt_rule *
1272 fw3_ipt_rule_create(struct fw3_ipt_handle *handle, struct fw3_protocol *proto,
1273 struct fw3_device *in, struct fw3_device *out,
1274 struct fw3_address *src, struct fw3_address *dest)
1276 struct fw3_ipt_rule *r;
1278 r = fw3_ipt_rule_new(handle);
1280 fw3_ipt_rule_proto(r, proto);
1281 fw3_ipt_rule_in_out(r, in, out);
1282 fw3_ipt_rule_src_dest(r, src, dest);