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);
105 fw3_init_extensions();
111 debug(struct fw3_ipt_handle *h, const char *fmt, ...)
115 printf("%s -t %s ", (h->family == FW3_FAMILY_V6) ? "ip6tables" : "iptables",
116 fw3_flag_names[h->table]);
124 fw3_ipt_set_policy(struct fw3_ipt_handle *h, const char *chain,
125 enum fw3_flag policy)
128 debug(h, "-P %s %s\n", chain, fw3_flag_names[policy]);
130 if (h->family == FW3_FAMILY_V6)
131 ip6tc_set_policy(chain, fw3_flag_names[policy], NULL, h->handle);
133 iptc_set_policy(chain, fw3_flag_names[policy], NULL, h->handle);
137 fw3_ipt_delete_chain(struct fw3_ipt_handle *h, const char *chain)
141 debug(h, "-F %s\n", chain);
142 debug(h, "-X %s\n", chain);
145 if (h->family == FW3_FAMILY_V6)
147 if (ip6tc_flush_entries(chain, h->handle))
148 ip6tc_delete_chain(chain, h->handle);
152 if (iptc_flush_entries(chain, h->handle))
153 iptc_delete_chain(chain, h->handle);
158 fw3_ipt_delete_rules(struct fw3_ipt_handle *h, const char *target)
161 const struct ipt_entry *e;
162 const struct ip6t_entry *e6;
167 if (h->family == FW3_FAMILY_V6)
169 for (chain = ip6tc_first_chain(h->handle);
171 chain = ip6tc_next_chain(h->handle))
176 for (num = 0, e6 = ip6tc_first_rule(chain, h->handle);
178 num++, e6 = ip6tc_next_rule(e6, h->handle))
180 t = ip6tc_get_target(e6, h->handle);
182 if (*t && !strcmp(t, target))
185 debug(h, "-D %s %u\n", chain, num + 1);
187 ip6tc_delete_num_entry(chain, num, h->handle);
197 for (chain = iptc_first_chain(h->handle);
199 chain = iptc_next_chain(h->handle))
204 for (num = 0, e = iptc_first_rule(chain, h->handle);
206 num++, e = iptc_next_rule(e, h->handle))
208 t = iptc_get_target(e, h->handle);
210 if (*t && !strcmp(t, target))
213 debug(h, "-D %s %u\n", chain, num + 1);
215 iptc_delete_num_entry(chain, num, h->handle);
226 fw3_ipt_create_chain(struct fw3_ipt_handle *h, const char *fmt, ...)
232 vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
236 debug(h, "-N %s\n", buf);
238 iptc_create_chain(buf, h->handle);
242 fw3_ipt_flush(struct fw3_ipt_handle *h)
246 if (h->family == FW3_FAMILY_V6)
248 for (chain = ip6tc_first_chain(h->handle);
250 chain = ip6tc_next_chain(h->handle))
252 ip6tc_flush_entries(chain, h->handle);
255 for (chain = ip6tc_first_chain(h->handle);
257 chain = ip6tc_next_chain(h->handle))
259 ip6tc_delete_chain(chain, h->handle);
264 for (chain = iptc_first_chain(h->handle);
266 chain = iptc_next_chain(h->handle))
268 iptc_flush_entries(chain, h->handle);
271 for (chain = iptc_first_chain(h->handle);
273 chain = iptc_next_chain(h->handle))
275 iptc_delete_chain(chain, h->handle);
281 fw3_ipt_commit(struct fw3_ipt_handle *h)
285 if (h->family == FW3_FAMILY_V6)
287 rv = ip6tc_commit(h->handle);
289 fprintf(stderr, "ip6tc_commit(): %s\n", ip6tc_strerror(errno));
293 rv = iptc_commit(h->handle);
295 fprintf(stderr, "iptc_commit(): %s\n", iptc_strerror(errno));
301 struct fw3_ipt_rule *
302 fw3_ipt_rule_new(struct fw3_ipt_handle *h)
304 struct fw3_ipt_rule *r;
306 r = fw3_alloc(sizeof(*r));
309 r->argv = fw3_alloc(sizeof(char *));
310 r->argv[r->argc++] = "fw3";
317 is_chain(struct fw3_ipt_handle *h, const char *name)
319 if (h->family == FW3_FAMILY_V6)
320 return ip6tc_is_chain(name, h->handle);
322 return iptc_is_chain(name, h->handle);
326 get_protoname(struct fw3_ipt_rule *r)
328 const struct xtables_pprot *pp;
331 for (pp = xtables_chain_protos; pp->name; pp++)
332 if (pp->num == r->protocol)
333 return (char *)pp->name;
338 static struct xtables_match *
339 find_match(struct fw3_ipt_rule *r, const char *name)
341 return xtables_find_match(name, XTF_TRY_LOAD, &r->matches);
345 init_match(struct fw3_ipt_rule *r, struct xtables_match *m, bool no_clone)
348 struct xtables_globals *g;
353 s = XT_ALIGN(sizeof(struct xt_entry_match)) + m->size;
357 fw3_xt_set_match_name(m);
359 m->m->u.user.revision = m->revision;
360 m->m->u.match_size = s;
362 /* free previous userspace data */
363 fw3_xt_free_match_udata(m);
368 /* don't merge options if no_clone is set and this match is a clone */
369 if (no_clone && (m == m->next))
372 /* merge option table */
373 g = (r->h->family == FW3_FAMILY_V6) ? &xtg6 : &xtg;
374 fw3_xt_merge_match_options(g, m);
378 need_protomatch(struct fw3_ipt_rule *r, const char *pname)
383 if (!xtables_find_match(pname, XTF_DONT_LOAD, NULL))
386 return !r->protocol_loaded;
389 static struct xtables_match *
390 load_protomatch(struct fw3_ipt_rule *r)
392 const char *pname = get_protoname(r);
394 if (!need_protomatch(r, pname))
397 return find_match(r, pname);
400 static struct xtables_target *
401 get_target(struct fw3_ipt_rule *r, const char *name)
404 struct xtables_target *t;
405 struct xtables_globals *g;
407 bool chain = is_chain(r->h, name);
410 t = xtables_find_target(XT_STANDARD_TARGET, XTF_LOAD_MUST_SUCCEED);
412 t = xtables_find_target(name, XTF_TRY_LOAD);
417 s = XT_ALIGN(sizeof(struct xt_entry_target)) + t->size;
420 fw3_xt_set_target_name(t, name);
422 t->t->u.user.revision = t->revision;
423 t->t->u.target_size = s;
425 /* free previous userspace data */
426 fw3_xt_free_target_udata(t);
431 /* merge option table */
432 g = (r->h->family == FW3_FAMILY_V6) ? &xtg6 : &xtg;
433 fw3_xt_merge_target_options(g, t);
441 fw3_ipt_rule_proto(struct fw3_ipt_rule *r, struct fw3_protocol *proto)
445 if (!proto || proto->any)
448 pr = proto->protocol;
450 if (r->h->family == FW3_FAMILY_V6)
455 r->e6.ipv6.proto = pr;
456 r->e6.ipv6.flags |= IP6T_F_PROTO;
459 r->e6.ipv6.invflags |= XT_INV_PROTO;
466 r->e.ip.invflags |= XT_INV_PROTO;
473 fw3_ipt_rule_in_out(struct fw3_ipt_rule *r,
474 struct fw3_device *in, struct fw3_device *out)
476 if (r->h->family == FW3_FAMILY_V6)
480 xtables_parse_interface(in->name, r->e6.ipv6.iniface,
481 r->e6.ipv6.iniface_mask);
484 r->e6.ipv6.invflags |= IP6T_INV_VIA_IN;
487 if (out && !out->any)
489 xtables_parse_interface(out->name, r->e6.ipv6.outiface,
490 r->e6.ipv6.outiface_mask);
493 r->e6.ipv6.invflags |= IP6T_INV_VIA_OUT;
500 xtables_parse_interface(in->name, r->e.ip.iniface,
501 r->e.ip.iniface_mask);
504 r->e.ip.invflags |= IPT_INV_VIA_IN;
507 if (out && !out->any)
509 xtables_parse_interface(out->name, r->e.ip.outiface,
510 r->e.ip.outiface_mask);
513 r->e.ip.invflags |= IPT_INV_VIA_OUT;
520 ip4prefix2mask(int prefix, struct in_addr *mask)
522 mask->s_addr = htonl(~((1 << (32 - prefix)) - 1));
526 ip6prefix2mask(int prefix, struct in6_addr *mask)
528 char *p = (char *)mask;
532 memset(p, 0xff, prefix / 8);
533 memset(p + (prefix / 8) + 1, 0, (128 - prefix) / 8);
534 p[prefix / 8] = 0xff << (8 - (prefix & 7));
538 memset(mask, 0, sizeof(*mask));
543 fw3_ipt_rule_src_dest(struct fw3_ipt_rule *r,
544 struct fw3_address *src, struct fw3_address *dest)
548 if ((src && src->range) || (dest && dest->range))
550 fw3_ipt_rule_addarg(r, false, "-m", "iprange");
557 fw3_ipt_rule_addarg(r, src->invert, "--src-range",
558 fw3_address_to_string(src, false));
560 else if (r->h->family == FW3_FAMILY_V6)
562 r->e6.ipv6.src = src->address.v6;
563 ip6prefix2mask(src->mask, &r->e6.ipv6.smsk);
565 for (i = 0; i < 4; i++)
566 r->e6.ipv6.src.s6_addr32[i] &= r->e6.ipv6.smsk.s6_addr32[i];
569 r->e6.ipv6.invflags |= IP6T_INV_SRCIP;
573 r->e.ip.src = src->address.v4;
574 ip4prefix2mask(src->mask, &r->e.ip.smsk);
576 r->e.ip.src.s_addr &= r->e.ip.smsk.s_addr;
579 r->e.ip.invflags |= IPT_INV_SRCIP;
583 if (dest && dest->set)
587 fw3_ipt_rule_addarg(r, dest->invert, "--dst-range",
588 fw3_address_to_string(dest, false));
590 else if (r->h->family == FW3_FAMILY_V6)
592 r->e6.ipv6.dst = dest->address.v6;
593 ip6prefix2mask(dest->mask, &r->e6.ipv6.dmsk);
595 for (i = 0; i < 4; i++)
596 r->e6.ipv6.dst.s6_addr32[i] &= r->e6.ipv6.dmsk.s6_addr32[i];
599 r->e6.ipv6.invflags |= IP6T_INV_DSTIP;
603 r->e.ip.dst = dest->address.v4;
604 ip4prefix2mask(dest->mask, &r->e.ip.dmsk);
606 r->e.ip.dst.s_addr &= r->e.ip.dmsk.s_addr;
609 r->e.ip.invflags |= IPT_INV_DSTIP;
615 fw3_ipt_rule_sport_dport(struct fw3_ipt_rule *r,
616 struct fw3_port *sp, struct fw3_port *dp)
618 char buf[sizeof("65535:65535\0")];
620 if ((!sp || !sp->set) && (!dp || !dp->set))
623 if (!get_protoname(r))
628 if (sp->port_min == sp->port_max)
629 sprintf(buf, "%u", sp->port_min);
631 sprintf(buf, "%u:%u", sp->port_min, sp->port_max);
633 fw3_ipt_rule_addarg(r, sp->invert, "--sport", buf);
638 if (dp->port_min == dp->port_max)
639 sprintf(buf, "%u", dp->port_min);
641 sprintf(buf, "%u:%u", dp->port_min, dp->port_max);
643 fw3_ipt_rule_addarg(r, dp->invert, "--dport", buf);
648 fw3_ipt_rule_mac(struct fw3_ipt_rule *r, struct fw3_mac *mac)
653 fw3_ipt_rule_addarg(r, false, "-m", "mac");
654 fw3_ipt_rule_addarg(r, mac->invert, "--mac-source", ether_ntoa(&mac->mac));
658 fw3_ipt_rule_icmptype(struct fw3_ipt_rule *r, struct fw3_icmptype *icmp)
660 char buf[sizeof("255/255\0")];
665 if (r->h->family == FW3_FAMILY_V6)
667 if (icmp->code6_min == 0 && icmp->code6_max == 0xFF)
668 sprintf(buf, "%u", icmp->type6);
670 sprintf(buf, "%u/%u", icmp->type6, icmp->code6_min);
672 fw3_ipt_rule_addarg(r, icmp->invert, "--icmpv6-type", buf);
676 if (icmp->code_min == 0 && icmp->code_max == 0xFF)
677 sprintf(buf, "%u", icmp->type);
679 sprintf(buf, "%u/%u", icmp->type, icmp->code_min);
681 fw3_ipt_rule_addarg(r, icmp->invert, "--icmp-type", buf);
686 fw3_ipt_rule_limit(struct fw3_ipt_rule *r, struct fw3_limit *limit)
688 char buf[sizeof("-4294967296/second\0")];
690 if (!limit || limit->rate <= 0)
693 fw3_ipt_rule_addarg(r, false, "-m", "limit");
695 sprintf(buf, "%u/%s", limit->rate, fw3_limit_units[limit->unit]);
696 fw3_ipt_rule_addarg(r, limit->invert, "--limit", buf);
698 if (limit->burst > 0)
700 sprintf(buf, "%u", limit->burst);
701 fw3_ipt_rule_addarg(r, limit->invert, "--limit-burst", buf);
706 fw3_ipt_rule_ipset(struct fw3_ipt_rule *r, struct fw3_ipset *ipset,
709 char buf[sizeof("dst,dst,dst\0")];
712 struct fw3_ipset_datatype *type;
717 list_for_each_entry(type, &ipset->datatypes, list)
722 p += sprintf(p, "%s", type->dest ? "dst" : "src");
725 fw3_ipt_rule_addarg(r, false, "-m", "set");
727 fw3_ipt_rule_addarg(r, invert, "--match-set",
728 ipset->external ? ipset->external : ipset->name);
730 fw3_ipt_rule_addarg(r, false, buf, NULL);
734 fw3_ipt_rule_time(struct fw3_ipt_rule *r, struct fw3_time *time)
737 struct tm empty = { 0 };
739 char buf[84]; /* sizeof("1,2,3,...,30,31\0") */
742 bool d1 = memcmp(&time->datestart, &empty, sizeof(empty));
743 bool d2 = memcmp(&time->datestop, &empty, sizeof(empty));
745 if (!d1 && !d2 && !time->timestart && !time->timestop &&
746 !(time->monthdays & 0xFFFFFFFE) && !(time->weekdays & 0xFE))
751 fw3_ipt_rule_addarg(r, false, "-m", "time");
754 fw3_ipt_rule_addarg(r, false, "--utc", NULL);
758 strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S", &time->datestart);
759 fw3_ipt_rule_addarg(r, false, "--datestart", buf);
764 strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S", &time->datestop);
765 fw3_ipt_rule_addarg(r, false, "--datestop", buf);
770 sprintf(buf, "%02d:%02d:%02d",
771 time->timestart / 3600,
772 time->timestart % 3600 / 60,
773 time->timestart % 60);
775 fw3_ipt_rule_addarg(r, false, "--timestart", buf);
780 sprintf(buf, "%02d:%02d:%02d",
781 time->timestop / 3600,
782 time->timestop % 3600 / 60,
783 time->timestop % 60);
785 fw3_ipt_rule_addarg(r, false, "--timestop", buf);
788 if (time->monthdays & 0xFFFFFFFE)
790 for (i = 1, p = buf; i < 32; i++)
792 if (hasbit(time->monthdays, i))
797 p += sprintf(p, "%u", i);
801 fw3_ipt_rule_addarg(r, hasbit(time->monthdays, 0), "--monthdays", buf);
804 if (time->weekdays & 0xFE)
806 for (i = 1, p = buf; i < 8; i++)
808 if (hasbit(time->weekdays, i))
813 p += sprintf(p, "%u", i);
817 fw3_ipt_rule_addarg(r, hasbit(time->weekdays, 0), "--weekdays", buf);
822 fw3_ipt_rule_mark(struct fw3_ipt_rule *r, struct fw3_mark *mark)
824 char buf[sizeof("0xFFFFFFFF/0xFFFFFFFF\0")];
826 if (!mark || !mark->set)
829 if (mark->mask < 0xFFFFFFFF)
830 sprintf(buf, "0x%x/0x%x", mark->mark, mark->mask);
832 sprintf(buf, "0x%x", mark->mark);
834 fw3_ipt_rule_addarg(r, false, "-m", "mark");
835 fw3_ipt_rule_addarg(r, mark->invert, "--mark", buf);
839 fw3_ipt_rule_comment(struct fw3_ipt_rule *r, const char *fmt, ...)
848 vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
851 fw3_ipt_rule_addarg(r, false, "-m", "comment");
852 fw3_ipt_rule_addarg(r, false, "--comment", buf);
856 fw3_ipt_rule_extra(struct fw3_ipt_rule *r, const char *extra)
860 if (!extra || !*extra)
863 s = fw3_strdup(extra);
865 for (p = strtok(s, " \t"); p; p = strtok(NULL, " \t"))
867 tmp = realloc(r->argv, (r->argc + 1) * sizeof(*r->argv));
873 r->argv[r->argc++] = fw3_strdup(p);
880 rule_print6(struct ip6t_entry *e)
882 char buf[INET6_ADDRSTRLEN];
885 if (e->ipv6.flags & IP6T_F_PROTO)
887 if (e->ipv6.flags & XT_INV_PROTO)
890 pname = get_protoname(container_of(e, struct fw3_ipt_rule, e6));
893 printf(" -p %s", pname);
895 printf(" -p %u", e->ipv6.proto);
898 if (e->ipv6.iniface[0])
900 if (e->ipv6.flags & IP6T_INV_VIA_IN)
903 printf(" -i %s", e->ipv6.iniface);
906 if (e->ipv6.outiface[0])
908 if (e->ipv6.flags & IP6T_INV_VIA_OUT)
911 printf(" -o %s", e->ipv6.outiface);
914 if (memcmp(&e->ipv6.src, &in6addr_any, sizeof(struct in6_addr)))
916 if (e->ipv6.flags & IP6T_INV_SRCIP)
919 printf(" -s %s/%u", inet_ntop(AF_INET6, &e->ipv6.src, buf, sizeof(buf)),
920 xtables_ip6mask_to_cidr(&e->ipv6.smsk));
923 if (memcmp(&e->ipv6.dst, &in6addr_any, sizeof(struct in6_addr)))
925 if (e->ipv6.flags & IP6T_INV_DSTIP)
928 printf(" -d %s/%u", inet_ntop(AF_INET6, &e->ipv6.dst, buf, sizeof(buf)),
929 xtables_ip6mask_to_cidr(&e->ipv6.dmsk));
934 rule_print4(struct ipt_entry *e)
936 struct in_addr in_zero = { 0 };
937 char buf[sizeof("255.255.255.255\0")];
942 if (e->ip.flags & XT_INV_PROTO)
945 pname = get_protoname(container_of(e, struct fw3_ipt_rule, e));
948 printf(" -p %s", pname);
950 printf(" -p %u", e->ip.proto);
953 if (e->ip.iniface[0])
955 if (e->ip.flags & IPT_INV_VIA_IN)
958 printf(" -i %s", e->ip.iniface);
961 if (e->ip.outiface[0])
963 if (e->ip.flags & IPT_INV_VIA_OUT)
966 printf(" -o %s", e->ip.outiface);
969 if (memcmp(&e->ip.src, &in_zero, sizeof(struct in_addr)))
971 if (e->ip.flags & IPT_INV_SRCIP)
974 printf(" -s %s/%u", inet_ntop(AF_INET, &e->ip.src, buf, sizeof(buf)),
975 xtables_ipmask_to_cidr(&e->ip.smsk));
978 if (memcmp(&e->ip.dst, &in_zero, sizeof(struct in_addr)))
980 if (e->ip.flags & IPT_INV_DSTIP)
983 printf(" -d %s/%u", inet_ntop(AF_INET, &e->ip.dst, buf, sizeof(buf)),
984 xtables_ipmask_to_cidr(&e->ip.dmsk));
989 rule_print(struct fw3_ipt_rule *r, const char *chain)
991 struct xtables_rule_match *rm;
992 struct xtables_match *m;
993 struct xtables_target *t;
995 debug(r->h, "-A %s", chain);
997 if (r->h->family == FW3_FAMILY_V6)
1002 for (rm = r->matches; rm; rm = rm->next)
1005 printf(" -m %s", fw3_xt_get_match_name(m));
1008 m->save(&r->e.ip, m->m);
1014 printf(" -j %s", fw3_xt_get_target_name(t));
1017 t->save(&r->e.ip, t->t);
1024 parse_option(struct fw3_ipt_rule *r, int optc, bool inv)
1026 struct xtables_rule_match *m;
1027 struct xtables_match *em;
1029 /* is a target option */
1030 if (r->target && fw3_xt_has_target_parse(r->target) &&
1031 optc >= r->target->option_offset &&
1032 optc < (r->target->option_offset + 256))
1034 xtables_option_tpcall(optc, r->argv, inv, r->target, &r->e);
1038 /* try to dispatch argument to one of the match parsers */
1039 for (m = r->matches; m; m = m->next)
1043 if (m->completed || !fw3_xt_has_match_parse(em))
1046 if (optc < em->option_offset ||
1047 optc >= (em->option_offset + 256))
1050 xtables_option_mpcall(optc, r->argv, inv, em, &r->e);
1054 /* unhandled option, might belong to a protocol match */
1055 if ((em = load_protomatch(r)) != NULL)
1057 init_match(r, em, false);
1059 r->protocol_loaded = true;
1066 fprintf(stderr, "parse_option(): option '%s' needs argument\n",
1070 fprintf(stderr, "parse_option(): unknown option '%s'\n",
1077 fw3_ipt_rule_addarg(struct fw3_ipt_rule *r, bool inv,
1078 const char *k, const char *v)
1086 n = inv + !!k + !!v;
1087 tmp = realloc(r->argv, (r->argc + n) * sizeof(*tmp));
1095 r->argv[r->argc++] = fw3_strdup("!");
1097 r->argv[r->argc++] = fw3_strdup(k);
1100 r->argv[r->argc++] = fw3_strdup(v);
1104 fw3_ipt_rule_append(struct fw3_ipt_rule *r, const char *fmt, ...)
1107 struct xtables_rule_match *m;
1108 struct xtables_match *em;
1109 struct xtables_target *et;
1110 struct xtables_globals *g;
1111 struct ipt_entry *e;
1112 struct ip6t_entry *e6;
1120 vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
1123 g = (r->h->family == FW3_FAMILY_V6) ? &xtg6 : &xtg;
1124 g->opts = g->orig_opts;
1129 while ((optc = getopt_long(r->argc, r->argv, "m:j:", g->opts, NULL)) != -1)
1134 em = find_match(r, optarg);
1138 fprintf(stderr, "fw3_ipt_rule_append(): Can't find match '%s'\n", optarg);
1142 init_match(r, em, true);
1146 et = get_target(r, optarg);
1150 fprintf(stderr, "fw3_ipt_rule_append(): Can't find target '%s'\n", optarg);
1157 if ((optarg[0] == '!') && (optarg[1] == '\0'))
1163 fprintf(stderr, "fw3_ipt_rule_append(): Bad argument '%s'\n", optarg);
1167 if (parse_option(r, optc, inv))
1175 for (m = r->matches; m; m = m->next)
1176 xtables_option_mfcall(m->match);
1179 xtables_option_tfcall(r->target);
1184 if (r->h->family == FW3_FAMILY_V6)
1186 s = XT_ALIGN(sizeof(struct ip6t_entry));
1188 for (m = r->matches; m; m = m->next)
1189 s += m->match->m->u.match_size;
1191 e6 = fw3_alloc(s + r->target->t->u.target_size);
1193 memcpy(e6, &r->e6, sizeof(struct ip6t_entry));
1195 e6->target_offset = s;
1196 e6->next_offset = s + r->target->t->u.target_size;
1200 for (m = r->matches; m; m = m->next)
1202 memcpy(e6->elems + s, m->match->m, m->match->m->u.match_size);
1203 s += m->match->m->u.match_size;
1206 memcpy(e6->elems + s, r->target->t, r->target->t->u.target_size);
1207 ip6tc_append_entry(buf, e6, r->h->handle);
1212 s = XT_ALIGN(sizeof(struct ipt_entry));
1214 for (m = r->matches; m; m = m->next)
1215 s += m->match->m->u.match_size;
1217 e = fw3_alloc(s + r->target->t->u.target_size);
1219 memcpy(e, &r->e, sizeof(struct ipt_entry));
1221 e->target_offset = s;
1222 e->next_offset = s + r->target->t->u.target_size;
1226 for (m = r->matches; m; m = m->next)
1228 memcpy(e->elems + s, m->match->m, m->match->m->u.match_size);
1229 s += m->match->m->u.match_size;
1232 memcpy(e->elems + s, r->target->t, r->target->t->u.target_size);
1234 if (!iptc_append_entry(buf, e, r->h->handle))
1235 fprintf(stderr, "iptc_append_entry(): %s\n", iptc_strerror(errno));
1241 for (i = 1; i < r->argc; i++)
1246 xtables_rule_matches_free(&r->matches);
1253 /* reset all targets and matches */
1254 for (em = xtables_matches; em; em = em->next)
1257 for (et = xtables_targets; et; et = et->next)
1263 xtables_free_opts(1);
1266 struct fw3_ipt_rule *
1267 fw3_ipt_rule_create(struct fw3_ipt_handle *handle, struct fw3_protocol *proto,
1268 struct fw3_device *in, struct fw3_device *out,
1269 struct fw3_address *src, struct fw3_address *dest)
1271 struct fw3_ipt_rule *r;
1273 r = fw3_ipt_rule_new(handle);
1275 fw3_ipt_rule_proto(r, proto);
1276 fw3_ipt_rule_in_out(r, in, out);
1277 fw3_ipt_rule_src_dest(r, src, dest);