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);
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;
361 strcpy(m->m->u.user.name, m->real_name ? m->real_name : m->name);
362 m->m->u.user.revision = m->revision;
363 m->m->u.match_size = s;
365 /* free previous userspace data */
369 m->udata = fw3_alloc(m->udata_size);
375 /* don't merge options if no_clone is set and this match is a clone */
376 if (no_clone && (m == m->next))
379 /* merge option table */
380 g = (r->h->family == FW3_FAMILY_V6) ? &xtg6 : &xtg;
383 g->opts = xtables_options_xfrm(g->orig_opts, g->opts,
384 m->x6_options, &m->option_offset);
387 g->opts = xtables_merge_options(g->orig_opts, g->opts,
388 m->extra_opts, &m->option_offset);
392 need_protomatch(struct fw3_ipt_rule *r, const char *pname)
397 if (!xtables_find_match(pname, XTF_DONT_LOAD, NULL))
400 return !r->protocol_loaded;
403 static struct xtables_match *
404 load_protomatch(struct fw3_ipt_rule *r)
406 const char *pname = get_protoname(r);
408 if (!need_protomatch(r, pname))
411 return find_match(r, pname);
414 static struct xtables_target *
415 get_target(struct fw3_ipt_rule *r, const char *name)
418 struct xtables_target *t;
419 struct xtables_globals *g;
421 bool chain = is_chain(r->h, name);
424 t = xtables_find_target(XT_STANDARD_TARGET, XTF_LOAD_MUST_SUCCEED);
426 t = xtables_find_target(name, XTF_TRY_LOAD);
431 s = XT_ALIGN(sizeof(struct xt_entry_target)) + t->size;
435 strcpy(t->t->u.user.name, name);
437 strcpy(t->t->u.user.name, t->real_name);
439 t->t->u.user.revision = t->revision;
440 t->t->u.target_size = s;
445 t->udata = fw3_alloc(t->udata_size);
451 /* merge option table */
452 g = (r->h->family == FW3_FAMILY_V6) ? &xtg6 : &xtg;
455 g->opts = xtables_options_xfrm(g->orig_opts, g->opts,
456 t->x6_options, &t->option_offset);
458 g->opts = xtables_merge_options(g->orig_opts, g->opts,
459 t->extra_opts, &t->option_offset);
467 fw3_ipt_rule_proto(struct fw3_ipt_rule *r, struct fw3_protocol *proto)
471 if (!proto || proto->any)
474 pr = proto->protocol;
476 if (r->h->family == FW3_FAMILY_V6)
481 r->e6.ipv6.proto = pr;
482 r->e6.ipv6.flags |= IP6T_F_PROTO;
485 r->e6.ipv6.invflags |= XT_INV_PROTO;
492 r->e.ip.invflags |= XT_INV_PROTO;
499 fw3_ipt_rule_in_out(struct fw3_ipt_rule *r,
500 struct fw3_device *in, struct fw3_device *out)
502 if (r->h->family == FW3_FAMILY_V6)
506 xtables_parse_interface(in->name, r->e6.ipv6.iniface,
507 r->e6.ipv6.iniface_mask);
510 r->e6.ipv6.invflags |= IP6T_INV_VIA_IN;
513 if (out && !out->any)
515 xtables_parse_interface(out->name, r->e6.ipv6.outiface,
516 r->e6.ipv6.outiface_mask);
519 r->e6.ipv6.invflags |= IP6T_INV_VIA_OUT;
526 xtables_parse_interface(in->name, r->e.ip.iniface,
527 r->e.ip.iniface_mask);
530 r->e.ip.invflags |= IPT_INV_VIA_IN;
533 if (out && !out->any)
535 xtables_parse_interface(out->name, r->e.ip.outiface,
536 r->e.ip.outiface_mask);
539 r->e.ip.invflags |= IPT_INV_VIA_OUT;
546 ip4prefix2mask(int prefix, struct in_addr *mask)
548 mask->s_addr = htonl(~((1 << (32 - prefix)) - 1));
552 ip6prefix2mask(int prefix, struct in6_addr *mask)
554 char *p = (char *)mask;
558 memset(p, 0xff, prefix / 8);
559 memset(p + (prefix / 8) + 1, 0, (128 - prefix) / 8);
560 p[prefix / 8] = 0xff << (8 - (prefix & 7));
564 memset(mask, 0, sizeof(*mask));
569 fw3_ipt_rule_src_dest(struct fw3_ipt_rule *r,
570 struct fw3_address *src, struct fw3_address *dest)
574 if ((src && src->range) || (dest && dest->range))
576 fw3_ipt_rule_addarg(r, false, "-m", "iprange");
583 fw3_ipt_rule_addarg(r, src->invert, "--src-range",
584 fw3_address_to_string(src, false));
586 else if (r->h->family == FW3_FAMILY_V6)
588 r->e6.ipv6.src = src->address.v6;
589 ip6prefix2mask(src->mask, &r->e6.ipv6.smsk);
591 for (i = 0; i < 4; i++)
592 r->e6.ipv6.src.s6_addr32[i] &= r->e6.ipv6.smsk.s6_addr32[i];
595 r->e6.ipv6.invflags |= IP6T_INV_SRCIP;
599 r->e.ip.src = src->address.v4;
600 ip4prefix2mask(src->mask, &r->e.ip.smsk);
602 r->e.ip.src.s_addr &= r->e.ip.smsk.s_addr;
605 r->e.ip.invflags |= IPT_INV_SRCIP;
609 if (dest && dest->set)
613 fw3_ipt_rule_addarg(r, dest->invert, "--dst-range",
614 fw3_address_to_string(dest, false));
616 else if (r->h->family == FW3_FAMILY_V6)
618 r->e6.ipv6.dst = dest->address.v6;
619 ip6prefix2mask(dest->mask, &r->e6.ipv6.dmsk);
621 for (i = 0; i < 4; i++)
622 r->e6.ipv6.dst.s6_addr32[i] &= r->e6.ipv6.dmsk.s6_addr32[i];
625 r->e6.ipv6.invflags |= IP6T_INV_DSTIP;
629 r->e.ip.dst = dest->address.v4;
630 ip4prefix2mask(dest->mask, &r->e.ip.dmsk);
632 r->e.ip.dst.s_addr &= r->e.ip.dmsk.s_addr;
635 r->e.ip.invflags |= IPT_INV_DSTIP;
641 fw3_ipt_rule_sport_dport(struct fw3_ipt_rule *r,
642 struct fw3_port *sp, struct fw3_port *dp)
644 char buf[sizeof("65535:65535\0")];
646 if ((!sp || !sp->set) && (!dp || !dp->set))
649 if (!get_protoname(r))
654 if (sp->port_min == sp->port_max)
655 sprintf(buf, "%u", sp->port_min);
657 sprintf(buf, "%u:%u", sp->port_min, sp->port_max);
659 fw3_ipt_rule_addarg(r, sp->invert, "--sport", buf);
664 if (dp->port_min == dp->port_max)
665 sprintf(buf, "%u", dp->port_min);
667 sprintf(buf, "%u:%u", dp->port_min, dp->port_max);
669 fw3_ipt_rule_addarg(r, dp->invert, "--dport", buf);
674 fw3_ipt_rule_mac(struct fw3_ipt_rule *r, struct fw3_mac *mac)
679 fw3_ipt_rule_addarg(r, false, "-m", "mac");
680 fw3_ipt_rule_addarg(r, mac->invert, "--mac-source", ether_ntoa(&mac->mac));
684 fw3_ipt_rule_icmptype(struct fw3_ipt_rule *r, struct fw3_icmptype *icmp)
686 char buf[sizeof("255/255\0")];
691 if (r->h->family == FW3_FAMILY_V6)
693 if (icmp->code6_min == 0 && icmp->code6_max == 0xFF)
694 sprintf(buf, "%u", icmp->type6);
696 sprintf(buf, "%u/%u", icmp->type6, icmp->code6_min);
698 fw3_ipt_rule_addarg(r, icmp->invert, "--icmpv6-type", buf);
702 if (icmp->code_min == 0 && icmp->code_max == 0xFF)
703 sprintf(buf, "%u", icmp->type);
705 sprintf(buf, "%u/%u", icmp->type, icmp->code_min);
707 fw3_ipt_rule_addarg(r, icmp->invert, "--icmp-type", buf);
712 fw3_ipt_rule_limit(struct fw3_ipt_rule *r, struct fw3_limit *limit)
714 char buf[sizeof("-4294967296/second\0")];
716 if (!limit || limit->rate <= 0)
719 fw3_ipt_rule_addarg(r, false, "-m", "limit");
721 sprintf(buf, "%u/%s", limit->rate, fw3_limit_units[limit->unit]);
722 fw3_ipt_rule_addarg(r, limit->invert, "--limit", buf);
724 if (limit->burst > 0)
726 sprintf(buf, "%u", limit->burst);
727 fw3_ipt_rule_addarg(r, limit->invert, "--limit-burst", buf);
732 fw3_ipt_rule_ipset(struct fw3_ipt_rule *r, struct fw3_ipset *ipset,
735 char buf[sizeof("dst,dst,dst\0")];
738 struct fw3_ipset_datatype *type;
743 list_for_each_entry(type, &ipset->datatypes, list)
748 p += sprintf(p, "%s", type->dest ? "dst" : "src");
751 fw3_ipt_rule_addarg(r, false, "-m", "set");
753 fw3_ipt_rule_addarg(r, invert, "--match-set",
754 ipset->external ? ipset->external : ipset->name);
756 fw3_ipt_rule_addarg(r, false, buf, NULL);
760 fw3_ipt_rule_time(struct fw3_ipt_rule *r, struct fw3_time *time)
763 struct tm empty = { 0 };
765 char buf[84]; /* sizeof("1,2,3,...,30,31\0") */
768 bool d1 = memcmp(&time->datestart, &empty, sizeof(empty));
769 bool d2 = memcmp(&time->datestop, &empty, sizeof(empty));
771 if (!d1 && !d2 && !time->timestart && !time->timestop &&
772 !(time->monthdays & 0xFFFFFFFE) && !(time->weekdays & 0xFE))
777 fw3_ipt_rule_addarg(r, false, "-m", "time");
780 fw3_ipt_rule_addarg(r, false, "--utc", NULL);
784 strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S", &time->datestart);
785 fw3_ipt_rule_addarg(r, false, "--datestart", buf);
790 strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S", &time->datestop);
791 fw3_ipt_rule_addarg(r, false, "--datestop", buf);
796 sprintf(buf, "%02d:%02d:%02d",
797 time->timestart / 3600,
798 time->timestart % 3600 / 60,
799 time->timestart % 60);
801 fw3_ipt_rule_addarg(r, false, "--timestart", buf);
806 sprintf(buf, "%02d:%02d:%02d",
807 time->timestop / 3600,
808 time->timestop % 3600 / 60,
809 time->timestop % 60);
811 fw3_ipt_rule_addarg(r, false, "--timestop", buf);
814 if (time->monthdays & 0xFFFFFFFE)
816 for (i = 1, p = buf; i < 32; i++)
818 if (hasbit(time->monthdays, i))
823 p += sprintf(p, "%u", i);
827 fw3_ipt_rule_addarg(r, hasbit(time->monthdays, 0), "--monthdays", buf);
830 if (time->weekdays & 0xFE)
832 for (i = 1, p = buf; i < 8; i++)
834 if (hasbit(time->weekdays, i))
839 p += sprintf(p, "%u", i);
843 fw3_ipt_rule_addarg(r, hasbit(time->weekdays, 0), "--weekdays", buf);
848 fw3_ipt_rule_mark(struct fw3_ipt_rule *r, struct fw3_mark *mark)
850 char buf[sizeof("0xFFFFFFFF/0xFFFFFFFF\0")];
852 if (!mark || !mark->set)
855 if (mark->mask < 0xFFFFFFFF)
856 sprintf(buf, "0x%x/0x%x", mark->mark, mark->mask);
858 sprintf(buf, "0x%x", mark->mark);
860 fw3_ipt_rule_addarg(r, false, "-m", "mark");
861 fw3_ipt_rule_addarg(r, mark->invert, "--mark", buf);
865 fw3_ipt_rule_comment(struct fw3_ipt_rule *r, const char *fmt, ...)
874 vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
877 fw3_ipt_rule_addarg(r, false, "-m", "comment");
878 fw3_ipt_rule_addarg(r, false, "--comment", buf);
882 fw3_ipt_rule_extra(struct fw3_ipt_rule *r, const char *extra)
886 if (!extra || !*extra)
889 s = fw3_strdup(extra);
891 for (p = strtok(s, " \t"); p; p = strtok(NULL, " \t"))
893 tmp = realloc(r->argv, (r->argc + 1) * sizeof(*r->argv));
899 r->argv[r->argc++] = fw3_strdup(p);
906 rule_print6(struct ip6t_entry *e)
908 char buf[INET6_ADDRSTRLEN];
911 if (e->ipv6.flags & IP6T_F_PROTO)
913 if (e->ipv6.flags & XT_INV_PROTO)
916 pname = get_protoname(container_of(e, struct fw3_ipt_rule, e6));
919 printf(" -p %s", pname);
921 printf(" -p %u", e->ipv6.proto);
924 if (e->ipv6.iniface[0])
926 if (e->ipv6.flags & IP6T_INV_VIA_IN)
929 printf(" -i %s", e->ipv6.iniface);
932 if (e->ipv6.outiface[0])
934 if (e->ipv6.flags & IP6T_INV_VIA_OUT)
937 printf(" -o %s", e->ipv6.outiface);
940 if (memcmp(&e->ipv6.src, &in6addr_any, sizeof(struct in6_addr)))
942 if (e->ipv6.flags & IP6T_INV_SRCIP)
945 printf(" -s %s/%u", inet_ntop(AF_INET6, &e->ipv6.src, buf, sizeof(buf)),
946 xtables_ip6mask_to_cidr(&e->ipv6.smsk));
949 if (memcmp(&e->ipv6.dst, &in6addr_any, sizeof(struct in6_addr)))
951 if (e->ipv6.flags & IP6T_INV_DSTIP)
954 printf(" -d %s/%u", inet_ntop(AF_INET6, &e->ipv6.dst, buf, sizeof(buf)),
955 xtables_ip6mask_to_cidr(&e->ipv6.dmsk));
960 rule_print4(struct ipt_entry *e)
962 struct in_addr in_zero = { 0 };
963 char buf[sizeof("255.255.255.255\0")];
968 if (e->ip.flags & XT_INV_PROTO)
971 pname = get_protoname(container_of(e, struct fw3_ipt_rule, e));
974 printf(" -p %s", pname);
976 printf(" -p %u", e->ip.proto);
979 if (e->ip.iniface[0])
981 if (e->ip.flags & IPT_INV_VIA_IN)
984 printf(" -i %s", e->ip.iniface);
987 if (e->ip.outiface[0])
989 if (e->ip.flags & IPT_INV_VIA_OUT)
992 printf(" -o %s", e->ip.outiface);
995 if (memcmp(&e->ip.src, &in_zero, sizeof(struct in_addr)))
997 if (e->ip.flags & IPT_INV_SRCIP)
1000 printf(" -s %s/%u", inet_ntop(AF_INET, &e->ip.src, buf, sizeof(buf)),
1001 xtables_ipmask_to_cidr(&e->ip.smsk));
1004 if (memcmp(&e->ip.dst, &in_zero, sizeof(struct in_addr)))
1006 if (e->ip.flags & IPT_INV_DSTIP)
1009 printf(" -d %s/%u", inet_ntop(AF_INET, &e->ip.dst, buf, sizeof(buf)),
1010 xtables_ipmask_to_cidr(&e->ip.dmsk));
1015 rule_print(struct fw3_ipt_rule *r, const char *chain)
1017 struct xtables_rule_match *rm;
1018 struct xtables_match *m;
1019 struct xtables_target *t;
1021 debug(r->h, "-A %s", chain);
1023 if (r->h->family == FW3_FAMILY_V6)
1024 rule_print6(&r->e6);
1028 for (rm = r->matches; rm; rm = rm->next)
1031 printf(" -m %s", m->alias ? m->alias(m->m) : m->m->u.user.name);
1034 m->save(&r->e.ip, m->m);
1040 printf(" -j %s", t->alias ? t->alias(t->t) : t->t->u.user.name);
1043 t->save(&r->e.ip, t->t);
1050 parse_option(struct fw3_ipt_rule *r, int optc, bool inv)
1052 struct xtables_rule_match *m;
1053 struct xtables_match *em;
1055 /* is a target option */
1056 if (r->target && (r->target->parse || r->target->x6_parse) &&
1057 optc >= r->target->option_offset &&
1058 optc < (r->target->option_offset + 256))
1060 xtables_option_tpcall(optc, r->argv, inv, r->target, &r->e);
1064 /* try to dispatch argument to one of the match parsers */
1065 for (m = r->matches; m; m = m->next)
1069 if (m->completed || (!em->parse && !em->x6_parse))
1072 if (optc < em->option_offset ||
1073 optc >= (em->option_offset + 256))
1076 xtables_option_mpcall(optc, r->argv, inv, em, &r->e);
1080 /* unhandled option, might belong to a protocol match */
1081 if ((em = load_protomatch(r)) != NULL)
1083 init_match(r, em, false);
1085 r->protocol_loaded = true;
1092 fprintf(stderr, "parse_option(): option '%s' needs argument\n",
1096 fprintf(stderr, "parse_option(): unknown option '%s'\n",
1103 fw3_ipt_rule_addarg(struct fw3_ipt_rule *r, bool inv,
1104 const char *k, const char *v)
1112 n = inv + !!k + !!v;
1113 tmp = realloc(r->argv, (r->argc + n) * sizeof(*tmp));
1121 r->argv[r->argc++] = fw3_strdup("!");
1123 r->argv[r->argc++] = fw3_strdup(k);
1126 r->argv[r->argc++] = fw3_strdup(v);
1130 fw3_ipt_rule_append(struct fw3_ipt_rule *r, const char *fmt, ...)
1133 struct xtables_rule_match *m;
1134 struct xtables_match *em;
1135 struct xtables_target *et;
1136 struct xtables_globals *g;
1137 struct ipt_entry *e;
1138 struct ip6t_entry *e6;
1146 vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
1149 g = (r->h->family == FW3_FAMILY_V6) ? &xtg6 : &xtg;
1150 g->opts = g->orig_opts;
1155 while ((optc = getopt_long(r->argc, r->argv, "m:j:", g->opts, NULL)) != -1)
1160 em = find_match(r, optarg);
1164 fprintf(stderr, "fw3_ipt_rule_append(): Can't find match '%s'\n", optarg);
1168 init_match(r, em, true);
1172 et = get_target(r, optarg);
1176 fprintf(stderr, "fw3_ipt_rule_append(): Can't find target '%s'\n", optarg);
1183 if ((optarg[0] == '!') && (optarg[1] == '\0'))
1189 fprintf(stderr, "fw3_ipt_rule_append(): Bad argument '%s'\n", optarg);
1193 if (parse_option(r, optc, inv))
1201 for (m = r->matches; m; m = m->next)
1202 xtables_option_mfcall(m->match);
1205 xtables_option_tfcall(r->target);
1210 if (r->h->family == FW3_FAMILY_V6)
1212 s = XT_ALIGN(sizeof(struct ip6t_entry));
1214 for (m = r->matches; m; m = m->next)
1215 s += m->match->m->u.match_size;
1217 e6 = fw3_alloc(s + r->target->t->u.target_size);
1219 memcpy(e6, &r->e6, sizeof(struct ip6t_entry));
1221 e6->target_offset = s;
1222 e6->next_offset = s + r->target->t->u.target_size;
1226 for (m = r->matches; m; m = m->next)
1228 memcpy(e6->elems + s, m->match->m, m->match->m->u.match_size);
1229 s += m->match->m->u.match_size;
1232 memcpy(e6->elems + s, r->target->t, r->target->t->u.target_size);
1233 ip6tc_append_entry(buf, e6, r->h->handle);
1238 s = XT_ALIGN(sizeof(struct ipt_entry));
1240 for (m = r->matches; m; m = m->next)
1241 s += m->match->m->u.match_size;
1243 e = fw3_alloc(s + r->target->t->u.target_size);
1245 memcpy(e, &r->e, sizeof(struct ipt_entry));
1247 e->target_offset = s;
1248 e->next_offset = s + r->target->t->u.target_size;
1252 for (m = r->matches; m; m = m->next)
1254 memcpy(e->elems + s, m->match->m, m->match->m->u.match_size);
1255 s += m->match->m->u.match_size;
1258 memcpy(e->elems + s, r->target->t, r->target->t->u.target_size);
1260 if (!iptc_append_entry(buf, e, r->h->handle))
1261 fprintf(stderr, "iptc_append_entry(): %s\n", iptc_strerror(errno));
1266 for (i = 1; i < r->argc; i++)
1271 xtables_rule_matches_free(&r->matches);
1276 /* reset all targets and matches */
1277 for (em = xtables_matches; em; em = em->next)
1280 for (et = xtables_targets; et; et = et->next)
1286 xtables_free_opts(1);
1289 struct fw3_ipt_rule *
1290 fw3_ipt_rule_create(struct fw3_ipt_handle *handle, struct fw3_protocol *proto,
1291 struct fw3_device *in, struct fw3_device *out,
1292 struct fw3_address *src, struct fw3_address *dest)
1294 struct fw3_ipt_rule *r;
1296 r = fw3_ipt_rule_new(handle);
1298 fw3_ipt_rule_proto(r, proto);
1299 fw3_ipt_rule_in_out(r, in, out);
1300 fw3_ipt_rule_src_dest(r, src, dest);