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 */
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 = LINUX_VERSION(x, y, z);
57 struct fw3_ipt_handle *
58 fw3_ipt_open(enum fw3_family family, enum fw3_table table)
60 struct fw3_ipt_handle *h;
62 h = fw3_alloc(sizeof(*h));
66 if (family == FW3_FAMILY_V6)
68 h->family = FW3_FAMILY_V6;
70 h->handle = ip6tc_init(fw3_flag_names[table]);
72 xtables_set_params(&xtg6);
73 xtables_set_nfproto(NFPROTO_IPV6);
77 h->family = FW3_FAMILY_V4;
79 h->handle = iptc_init(fw3_flag_names[table]);
81 xtables_set_params(&xtg);
82 xtables_set_nfproto(NFPROTO_IPV4);
91 xtables_pending_matches = NULL;
92 xtables_pending_targets = NULL;
94 xtables_matches = NULL;
95 xtables_targets = NULL;
105 debug(struct fw3_ipt_handle *h, const char *fmt, ...)
109 printf("%s -t %s ", (h->family == FW3_FAMILY_V6) ? "ip6tables" : "iptables",
110 fw3_flag_names[h->table]);
118 fw3_ipt_set_policy(struct fw3_ipt_handle *h, const char *chain,
119 enum fw3_flag policy)
122 debug(h, "-P %s %s\n", chain, fw3_flag_names[policy]);
124 if (h->family == FW3_FAMILY_V6)
125 ip6tc_set_policy(chain, fw3_flag_names[policy], NULL, h->handle);
127 iptc_set_policy(chain, fw3_flag_names[policy], NULL, h->handle);
131 fw3_ipt_delete_chain(struct fw3_ipt_handle *h, const char *chain)
135 debug(h, "-F %s\n", chain);
136 debug(h, "-X %s\n", chain);
139 if (h->family == FW3_FAMILY_V6)
141 if (ip6tc_flush_entries(chain, h->handle))
142 ip6tc_delete_chain(chain, h->handle);
146 if (iptc_flush_entries(chain, h->handle))
147 iptc_delete_chain(chain, h->handle);
152 fw3_ipt_delete_rules(struct fw3_ipt_handle *h, const char *target)
155 const struct ipt_entry *e;
156 const struct ip6t_entry *e6;
161 if (h->family == FW3_FAMILY_V6)
163 for (chain = ip6tc_first_chain(h->handle);
165 chain = ip6tc_next_chain(h->handle))
170 for (num = 0, e6 = ip6tc_first_rule(chain, h->handle);
172 num++, e6 = ip6tc_next_rule(e6, h->handle))
174 t = ip6tc_get_target(e6, h->handle);
176 if (*t && !strcmp(t, target))
179 debug(h, "-D %s %u\n", chain, num + 1);
181 ip6tc_delete_num_entry(chain, num, h->handle);
191 for (chain = iptc_first_chain(h->handle);
193 chain = iptc_next_chain(h->handle))
198 for (num = 0, e = iptc_first_rule(chain, h->handle);
200 num++, e = iptc_next_rule(e, h->handle))
202 t = iptc_get_target(e, h->handle);
204 if (*t && !strcmp(t, target))
207 debug(h, "-D %s %u\n", chain, num + 1);
209 iptc_delete_num_entry(chain, num, h->handle);
220 fw3_ipt_create_chain(struct fw3_ipt_handle *h, const char *fmt, ...)
226 vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
230 debug(h, "-N %s\n", buf);
232 iptc_create_chain(buf, h->handle);
236 fw3_ipt_flush(struct fw3_ipt_handle *h)
240 if (h->family == FW3_FAMILY_V6)
242 for (chain = ip6tc_first_chain(h->handle);
244 chain = ip6tc_next_chain(h->handle))
246 ip6tc_flush_entries(chain, h->handle);
249 for (chain = ip6tc_first_chain(h->handle);
251 chain = ip6tc_next_chain(h->handle))
253 ip6tc_delete_chain(chain, h->handle);
258 for (chain = iptc_first_chain(h->handle);
260 chain = iptc_next_chain(h->handle))
262 iptc_flush_entries(chain, h->handle);
265 for (chain = iptc_first_chain(h->handle);
267 chain = iptc_next_chain(h->handle))
269 iptc_delete_chain(chain, h->handle);
275 fw3_ipt_commit(struct fw3_ipt_handle *h)
279 if (h->family == FW3_FAMILY_V6)
281 rv = ip6tc_commit(h->handle);
283 fprintf(stderr, "ip6tc_commit(): %s\n", ip6tc_strerror(errno));
287 rv = iptc_commit(h->handle);
289 fprintf(stderr, "iptc_commit(): %s\n", iptc_strerror(errno));
295 struct fw3_ipt_rule *
296 fw3_ipt_rule_new(struct fw3_ipt_handle *h)
298 struct fw3_ipt_rule *r;
300 r = fw3_alloc(sizeof(*r));
303 r->argv = fw3_alloc(sizeof(char *));
304 r->argv[r->argc++] = "fw3";
311 is_chain(struct fw3_ipt_handle *h, const char *name)
313 if (h->family == FW3_FAMILY_V6)
314 return ip6tc_is_chain(name, h->handle);
316 return iptc_is_chain(name, h->handle);
320 get_protoname(struct fw3_ipt_rule *r)
322 const struct xtables_pprot *pp;
325 for (pp = xtables_chain_protos; pp->name; pp++)
326 if (pp->num == r->protocol)
327 return (char *)pp->name;
332 static struct xtables_match *
333 find_match(struct fw3_ipt_rule *r, const char *name)
335 return xtables_find_match(name, XTF_TRY_LOAD, &r->matches);
339 init_match(struct fw3_ipt_rule *r, struct xtables_match *m, bool no_clone)
342 struct xtables_globals *g;
347 s = XT_ALIGN(sizeof(struct xt_entry_match)) + m->size;
350 strcpy(m->m->u.user.name, m->real_name ? m->real_name : m->name);
351 m->m->u.user.revision = m->revision;
352 m->m->u.match_size = s;
354 /* free previous userspace data */
358 m->udata = fw3_alloc(m->udata_size);
364 /* don't merge options if no_clone is set and this match is a clone */
365 if (no_clone && (m == m->next))
368 /* merge option table */
369 g = (r->h->family == FW3_FAMILY_V6) ? &xtg6 : &xtg;
372 g->opts = xtables_options_xfrm(g->orig_opts, g->opts,
373 m->x6_options, &m->option_offset);
376 g->opts = xtables_merge_options(g->orig_opts, g->opts,
377 m->extra_opts, &m->option_offset);
381 need_protomatch(struct fw3_ipt_rule *r, const char *pname)
386 if (!xtables_find_match(pname, XTF_DONT_LOAD, NULL))
389 return !r->protocol_loaded;
392 static struct xtables_match *
393 load_protomatch(struct fw3_ipt_rule *r)
395 const char *pname = get_protoname(r);
397 if (!need_protomatch(r, pname))
400 return find_match(r, pname);
403 static struct xtables_target *
404 get_target(struct fw3_ipt_rule *r, const char *name)
407 struct xtables_target *t;
408 struct xtables_globals *g;
410 bool chain = is_chain(r->h, name);
413 t = xtables_find_target(XT_STANDARD_TARGET, XTF_LOAD_MUST_SUCCEED);
415 t = xtables_find_target(name, XTF_TRY_LOAD);
420 s = XT_ALIGN(sizeof(struct xt_entry_target)) + t->size;
424 strcpy(t->t->u.user.name, name);
426 strcpy(t->t->u.user.name, t->real_name);
428 t->t->u.user.revision = t->revision;
429 t->t->u.target_size = s;
434 t->udata = fw3_alloc(t->udata_size);
440 /* merge option table */
441 g = (r->h->family == FW3_FAMILY_V6) ? &xtg6 : &xtg;
444 g->opts = xtables_options_xfrm(g->orig_opts, g->opts,
445 t->x6_options, &t->option_offset);
447 g->opts = xtables_merge_options(g->orig_opts, g->opts,
448 t->extra_opts, &t->option_offset);
456 fw3_ipt_rule_proto(struct fw3_ipt_rule *r, struct fw3_protocol *proto)
460 if (!proto || proto->any)
463 pr = proto->protocol;
465 if (r->h->family == FW3_FAMILY_V6)
470 r->e6.ipv6.proto = pr;
471 r->e6.ipv6.flags |= IP6T_F_PROTO;
474 r->e6.ipv6.invflags |= XT_INV_PROTO;
481 r->e.ip.invflags |= XT_INV_PROTO;
488 fw3_ipt_rule_in_out(struct fw3_ipt_rule *r,
489 struct fw3_device *in, struct fw3_device *out)
491 if (r->h->family == FW3_FAMILY_V6)
495 xtables_parse_interface(in->name, r->e6.ipv6.iniface,
496 r->e6.ipv6.iniface_mask);
499 r->e6.ipv6.invflags |= IP6T_INV_VIA_IN;
502 if (out && !out->any)
504 xtables_parse_interface(out->name, r->e6.ipv6.outiface,
505 r->e6.ipv6.outiface_mask);
508 r->e6.ipv6.invflags |= IP6T_INV_VIA_OUT;
515 xtables_parse_interface(in->name, r->e.ip.iniface,
516 r->e.ip.iniface_mask);
519 r->e.ip.invflags |= IPT_INV_VIA_IN;
522 if (out && !out->any)
524 xtables_parse_interface(out->name, r->e.ip.outiface,
525 r->e.ip.outiface_mask);
528 r->e.ip.invflags |= IPT_INV_VIA_OUT;
535 ip4prefix2mask(int prefix, struct in_addr *mask)
537 mask->s_addr = htonl(~((1 << (32 - prefix)) - 1));
541 ip6prefix2mask(int prefix, struct in6_addr *mask)
543 char *p = (char *)mask;
547 memset(p, 0xff, prefix / 8);
548 memset(p + (prefix / 8) + 1, 0, (128 - prefix) / 8);
549 p[prefix / 8] = 0xff << (8 - (prefix & 7));
553 memset(mask, 0, sizeof(*mask));
558 fw3_ipt_rule_src_dest(struct fw3_ipt_rule *r,
559 struct fw3_address *src, struct fw3_address *dest)
563 if ((src && src->range) || (dest && dest->range))
565 fw3_ipt_rule_addarg(r, false, "-m", "iprange");
572 fw3_ipt_rule_addarg(r, src->invert, "--src-range",
573 fw3_address_to_string(src, false));
575 else if (r->h->family == FW3_FAMILY_V6)
577 r->e6.ipv6.src = src->address.v6;
578 ip6prefix2mask(src->mask, &r->e6.ipv6.smsk);
580 for (i = 0; i < 4; i++)
581 r->e6.ipv6.src.s6_addr32[i] &= r->e6.ipv6.smsk.s6_addr32[i];
584 r->e6.ipv6.invflags |= IP6T_INV_SRCIP;
588 r->e.ip.src = src->address.v4;
589 ip4prefix2mask(src->mask, &r->e.ip.smsk);
591 r->e.ip.src.s_addr &= r->e.ip.smsk.s_addr;
594 r->e.ip.invflags |= IPT_INV_SRCIP;
598 if (dest && dest->set)
602 fw3_ipt_rule_addarg(r, dest->invert, "--dst-range",
603 fw3_address_to_string(dest, false));
605 else if (r->h->family == FW3_FAMILY_V6)
607 r->e6.ipv6.dst = dest->address.v6;
608 ip6prefix2mask(dest->mask, &r->e6.ipv6.dmsk);
610 for (i = 0; i < 4; i++)
611 r->e6.ipv6.dst.s6_addr32[i] &= r->e6.ipv6.dmsk.s6_addr32[i];
614 r->e6.ipv6.invflags |= IP6T_INV_DSTIP;
618 r->e.ip.dst = dest->address.v4;
619 ip4prefix2mask(dest->mask, &r->e.ip.dmsk);
621 r->e.ip.dst.s_addr &= r->e.ip.dmsk.s_addr;
624 r->e.ip.invflags |= IPT_INV_DSTIP;
630 fw3_ipt_rule_sport_dport(struct fw3_ipt_rule *r,
631 struct fw3_port *sp, struct fw3_port *dp)
633 char buf[sizeof("65535:65535\0")];
635 if ((!sp || !sp->set) && (!dp || !dp->set))
638 if (!get_protoname(r))
643 if (sp->port_min == sp->port_max)
644 sprintf(buf, "%u", sp->port_min);
646 sprintf(buf, "%u:%u", sp->port_min, sp->port_max);
648 fw3_ipt_rule_addarg(r, sp->invert, "--sport", buf);
653 if (dp->port_min == dp->port_max)
654 sprintf(buf, "%u", dp->port_min);
656 sprintf(buf, "%u:%u", dp->port_min, dp->port_max);
658 fw3_ipt_rule_addarg(r, dp->invert, "--dport", buf);
663 fw3_ipt_rule_mac(struct fw3_ipt_rule *r, struct fw3_mac *mac)
668 fw3_ipt_rule_addarg(r, false, "-m", "mac");
669 fw3_ipt_rule_addarg(r, mac->invert, "--mac-source", ether_ntoa(&mac->mac));
673 fw3_ipt_rule_icmptype(struct fw3_ipt_rule *r, struct fw3_icmptype *icmp)
675 char buf[sizeof("255/255\0")];
680 if (r->h->family == FW3_FAMILY_V6)
682 if (icmp->code6_min == 0 && icmp->code6_max == 0xFF)
683 sprintf(buf, "%u", icmp->type6);
685 sprintf(buf, "%u/%u", icmp->type6, icmp->code6_min);
687 fw3_ipt_rule_addarg(r, icmp->invert, "--icmpv6-type", buf);
691 if (icmp->code_min == 0 && icmp->code_max == 0xFF)
692 sprintf(buf, "%u", icmp->type);
694 sprintf(buf, "%u/%u", icmp->type, icmp->code_min);
696 fw3_ipt_rule_addarg(r, icmp->invert, "--icmp-type", buf);
701 fw3_ipt_rule_limit(struct fw3_ipt_rule *r, struct fw3_limit *limit)
703 char buf[sizeof("-4294967296/second\0")];
705 if (!limit || limit->rate <= 0)
708 fw3_ipt_rule_addarg(r, false, "-m", "limit");
710 sprintf(buf, "%u/%s", limit->rate, fw3_limit_units[limit->unit]);
711 fw3_ipt_rule_addarg(r, limit->invert, "--limit", buf);
713 if (limit->burst > 0)
715 sprintf(buf, "%u", limit->burst);
716 fw3_ipt_rule_addarg(r, limit->invert, "--limit-burst", buf);
721 fw3_ipt_rule_ipset(struct fw3_ipt_rule *r, struct fw3_ipset *ipset,
724 char buf[sizeof("dst,dst,dst\0")];
727 struct fw3_ipset_datatype *type;
732 list_for_each_entry(type, &ipset->datatypes, list)
737 p += sprintf(p, "%s", type->dest ? "dst" : "src");
740 fw3_ipt_rule_addarg(r, false, "-m", "set");
742 fw3_ipt_rule_addarg(r, invert, "--match-set",
743 ipset->external ? ipset->external : ipset->name);
745 fw3_ipt_rule_addarg(r, false, buf, NULL);
749 fw3_ipt_rule_time(struct fw3_ipt_rule *r, struct fw3_time *time)
752 struct tm empty = { 0 };
754 char buf[84]; /* sizeof("1,2,3,...,30,31\0") */
757 bool d1 = memcmp(&time->datestart, &empty, sizeof(empty));
758 bool d2 = memcmp(&time->datestop, &empty, sizeof(empty));
760 if (!d1 && !d2 && !time->timestart && !time->timestop &&
761 !(time->monthdays & 0xFFFFFFFE) && !(time->weekdays & 0xFE))
766 fw3_ipt_rule_addarg(r, false, "-m", "time");
769 fw3_ipt_rule_addarg(r, false, "--utc", NULL);
773 strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S", &time->datestart);
774 fw3_ipt_rule_addarg(r, false, "--datestart", buf);
779 strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S", &time->datestop);
780 fw3_ipt_rule_addarg(r, false, "--datestop", buf);
785 sprintf(buf, "%02d:%02d:%02d",
786 time->timestart / 3600,
787 time->timestart % 3600 / 60,
788 time->timestart % 60);
790 fw3_ipt_rule_addarg(r, false, "--timestart", buf);
795 sprintf(buf, "%02d:%02d:%02d",
796 time->timestop / 3600,
797 time->timestop % 3600 / 60,
798 time->timestop % 60);
800 fw3_ipt_rule_addarg(r, false, "--timestop", buf);
803 if (time->monthdays & 0xFFFFFFFE)
805 for (i = 1, p = buf; i < 32; i++)
807 if (hasbit(time->monthdays, i))
812 p += sprintf(p, "%u", i);
816 fw3_ipt_rule_addarg(r, hasbit(time->monthdays, 0), "--monthdays", buf);
819 if (time->weekdays & 0xFE)
821 for (i = 1, p = buf; i < 8; i++)
823 if (hasbit(time->weekdays, i))
828 p += sprintf(p, "%u", i);
832 fw3_ipt_rule_addarg(r, hasbit(time->weekdays, 0), "--weekdays", buf);
837 fw3_ipt_rule_mark(struct fw3_ipt_rule *r, struct fw3_mark *mark)
839 char buf[sizeof("0xFFFFFFFF/0xFFFFFFFF\0")];
841 if (!mark || !mark->set)
844 if (mark->mask < 0xFFFFFFFF)
845 sprintf(buf, "0x%x/0x%x", mark->mark, mark->mask);
847 sprintf(buf, "0x%x", mark->mark);
849 fw3_ipt_rule_addarg(r, false, "-m", "mark");
850 fw3_ipt_rule_addarg(r, mark->invert, "--mark", buf);
854 fw3_ipt_rule_comment(struct fw3_ipt_rule *r, const char *fmt, ...)
863 vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
866 fw3_ipt_rule_addarg(r, false, "-m", "comment");
867 fw3_ipt_rule_addarg(r, false, "--comment", buf);
871 fw3_ipt_rule_extra(struct fw3_ipt_rule *r, const char *extra)
875 if (!extra || !*extra)
878 s = fw3_strdup(extra);
880 for (p = strtok(s, " \t"); p; p = strtok(NULL, " \t"))
882 tmp = realloc(r->argv, (r->argc + 1) * sizeof(*r->argv));
888 r->argv[r->argc++] = fw3_strdup(p);
895 rule_print6(struct ip6t_entry *e)
897 char buf[INET6_ADDRSTRLEN];
900 if (e->ipv6.flags & IP6T_F_PROTO)
902 if (e->ipv6.flags & XT_INV_PROTO)
905 pname = get_protoname(container_of(e, struct fw3_ipt_rule, e6));
908 printf(" -p %s", pname);
910 printf(" -p %u", e->ipv6.proto);
913 if (e->ipv6.iniface[0])
915 if (e->ipv6.flags & IP6T_INV_VIA_IN)
918 printf(" -i %s", e->ipv6.iniface);
921 if (e->ipv6.outiface[0])
923 if (e->ipv6.flags & IP6T_INV_VIA_OUT)
926 printf(" -o %s", e->ipv6.outiface);
929 if (memcmp(&e->ipv6.src, &in6addr_any, sizeof(struct in6_addr)))
931 if (e->ipv6.flags & IP6T_INV_SRCIP)
934 printf(" -s %s/%u", inet_ntop(AF_INET6, &e->ipv6.src, buf, sizeof(buf)),
935 xtables_ip6mask_to_cidr(&e->ipv6.smsk));
938 if (memcmp(&e->ipv6.dst, &in6addr_any, sizeof(struct in6_addr)))
940 if (e->ipv6.flags & IP6T_INV_DSTIP)
943 printf(" -d %s/%u", inet_ntop(AF_INET6, &e->ipv6.dst, buf, sizeof(buf)),
944 xtables_ip6mask_to_cidr(&e->ipv6.dmsk));
949 rule_print4(struct ipt_entry *e)
951 struct in_addr in_zero = { 0 };
952 char buf[sizeof("255.255.255.255\0")];
957 if (e->ip.flags & XT_INV_PROTO)
960 pname = get_protoname(container_of(e, struct fw3_ipt_rule, e));
963 printf(" -p %s", pname);
965 printf(" -p %u", e->ip.proto);
968 if (e->ip.iniface[0])
970 if (e->ip.flags & IPT_INV_VIA_IN)
973 printf(" -i %s", e->ip.iniface);
976 if (e->ip.outiface[0])
978 if (e->ip.flags & IPT_INV_VIA_OUT)
981 printf(" -o %s", e->ip.outiface);
984 if (memcmp(&e->ip.src, &in_zero, sizeof(struct in_addr)))
986 if (e->ip.flags & IPT_INV_SRCIP)
989 printf(" -s %s/%u", inet_ntop(AF_INET, &e->ip.src, buf, sizeof(buf)),
990 xtables_ipmask_to_cidr(&e->ip.smsk));
993 if (memcmp(&e->ip.dst, &in_zero, sizeof(struct in_addr)))
995 if (e->ip.flags & IPT_INV_DSTIP)
998 printf(" -d %s/%u", inet_ntop(AF_INET, &e->ip.dst, buf, sizeof(buf)),
999 xtables_ipmask_to_cidr(&e->ip.dmsk));
1004 rule_print(struct fw3_ipt_rule *r, const char *chain)
1006 struct xtables_rule_match *rm;
1007 struct xtables_match *m;
1008 struct xtables_target *t;
1010 debug(r->h, "-A %s", chain);
1012 if (r->h->family == FW3_FAMILY_V6)
1013 rule_print6(&r->e6);
1017 for (rm = r->matches; rm; rm = rm->next)
1020 printf(" -m %s", m->alias ? m->alias(m->m) : m->m->u.user.name);
1023 m->save(&r->e.ip, m->m);
1029 printf(" -j %s", t->alias ? t->alias(t->t) : t->t->u.user.name);
1032 t->save(&r->e.ip, t->t);
1039 parse_option(struct fw3_ipt_rule *r, int optc, bool inv)
1041 struct xtables_rule_match *m;
1042 struct xtables_match *em;
1044 /* is a target option */
1045 if (r->target && (r->target->parse || r->target->x6_parse) &&
1046 optc >= r->target->option_offset &&
1047 optc < (r->target->option_offset + 256))
1049 xtables_option_tpcall(optc, r->argv, inv, r->target, &r->e);
1053 /* try to dispatch argument to one of the match parsers */
1054 for (m = r->matches; m; m = m->next)
1058 if (m->completed || (!em->parse && !em->x6_parse))
1061 if (optc < em->option_offset ||
1062 optc >= (em->option_offset + 256))
1065 xtables_option_mpcall(optc, r->argv, inv, em, &r->e);
1069 /* unhandled option, might belong to a protocol match */
1070 if ((em = load_protomatch(r)) != NULL)
1072 init_match(r, em, false);
1074 r->protocol_loaded = true;
1081 fprintf(stderr, "parse_option(): option '%s' needs argument\n",
1085 fprintf(stderr, "parse_option(): unknown option '%s'\n",
1092 fw3_ipt_rule_addarg(struct fw3_ipt_rule *r, bool inv,
1093 const char *k, const char *v)
1101 n = inv + !!k + !!v;
1102 tmp = realloc(r->argv, (r->argc + n) * sizeof(*tmp));
1110 r->argv[r->argc++] = fw3_strdup("!");
1112 r->argv[r->argc++] = fw3_strdup(k);
1115 r->argv[r->argc++] = fw3_strdup(v);
1119 fw3_ipt_rule_append(struct fw3_ipt_rule *r, const char *fmt, ...)
1122 struct xtables_rule_match *m;
1123 struct xtables_match *em;
1124 struct xtables_target *et;
1125 struct xtables_globals *g;
1126 struct ipt_entry *e;
1127 struct ip6t_entry *e6;
1135 vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
1138 g = (r->h->family == FW3_FAMILY_V6) ? &xtg6 : &xtg;
1139 g->opts = g->orig_opts;
1144 while ((optc = getopt_long(r->argc, r->argv, "m:j:", g->opts, NULL)) != -1)
1149 em = find_match(r, optarg);
1153 fprintf(stderr, "fw3_ipt_rule_append(): Can't find match '%s'\n", optarg);
1157 init_match(r, em, true);
1161 et = get_target(r, optarg);
1165 fprintf(stderr, "fw3_ipt_rule_append(): Can't find target '%s'\n", optarg);
1172 if ((optarg[0] == '!') && (optarg[1] == '\0'))
1178 fprintf(stderr, "fw3_ipt_rule_append(): Bad argument '%s'\n", optarg);
1182 if (parse_option(r, optc, inv))
1190 for (m = r->matches; m; m = m->next)
1191 xtables_option_mfcall(m->match);
1194 xtables_option_tfcall(r->target);
1199 if (r->h->family == FW3_FAMILY_V6)
1201 s = XT_ALIGN(sizeof(struct ip6t_entry));
1203 for (m = r->matches; m; m = m->next)
1204 s += m->match->m->u.match_size;
1206 e6 = fw3_alloc(s + r->target->t->u.target_size);
1208 memcpy(e6, &r->e6, sizeof(struct ip6t_entry));
1210 e6->target_offset = s;
1211 e6->next_offset = s + r->target->t->u.target_size;
1215 for (m = r->matches; m; m = m->next)
1217 memcpy(e6->elems + s, m->match->m, m->match->m->u.match_size);
1218 s += m->match->m->u.match_size;
1221 memcpy(e6->elems + s, r->target->t, r->target->t->u.target_size);
1222 ip6tc_append_entry(buf, e6, r->h->handle);
1227 s = XT_ALIGN(sizeof(struct ipt_entry));
1229 for (m = r->matches; m; m = m->next)
1230 s += m->match->m->u.match_size;
1232 e = fw3_alloc(s + r->target->t->u.target_size);
1234 memcpy(e, &r->e, sizeof(struct ipt_entry));
1236 e->target_offset = s;
1237 e->next_offset = s + r->target->t->u.target_size;
1241 for (m = r->matches; m; m = m->next)
1243 memcpy(e->elems + s, m->match->m, m->match->m->u.match_size);
1244 s += m->match->m->u.match_size;
1247 memcpy(e->elems + s, r->target->t, r->target->t->u.target_size);
1249 if (!iptc_append_entry(buf, e, r->h->handle))
1250 fprintf(stderr, "iptc_append_entry(): %s\n", iptc_strerror(errno));
1255 for (i = 1; i < r->argc; i++)
1260 xtables_rule_matches_free(&r->matches);
1265 /* reset all targets and matches */
1266 for (em = xtables_matches; em; em = em->next)
1269 for (et = xtables_targets; et; et = et->next)
1275 xtables_free_opts(1);
1278 struct fw3_ipt_rule *
1279 fw3_ipt_rule_create(struct fw3_ipt_handle *handle, struct fw3_protocol *proto,
1280 struct fw3_device *in, struct fw3_device *out,
1281 struct fw3_address *src, struct fw3_address *dest)
1283 struct fw3_ipt_rule *r;
1285 r = fw3_ipt_rule_new(handle);
1287 fw3_ipt_rule_proto(r, proto);
1288 fw3_ipt_rule_in_out(r, in, out);
1289 fw3_ipt_rule_src_dest(r, src, dest);