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.
19 #ifndef __FW3_IPTABLES_H
20 #define __FW3_IPTABLES_H
22 #include <libiptc/libiptc.h>
23 #include <libiptc/libip6tc.h>
28 #include <sys/utsname.h>
33 extern struct xtables_match *xtables_pending_matches;
34 extern struct xtables_target *xtables_pending_targets;
36 /* libext.a interface */
37 #define FW3_IPT_MODULES \
38 __ipt_module(comment) \
39 __ipt_module(conntrack) \
46 __ipt_module(standard) \
54 __ipt_module(MASQUERADE) \
55 __ipt_module(REDIRECT) \
56 __ipt_module(REJECT) \
62 #define __ipt_module(x) \
63 extern void libxt_##x##_init(void) __attribute__((weak)); \
64 extern void libipt_##x##_init(void) __attribute__((weak)); \
65 extern void libip6t_##x##_init(void) __attribute__((weak));
70 /* Required by certain extensions like SNAT and DNAT */
71 extern int kernel_version;
72 void get_kernel_version(void);
74 struct fw3_ipt_handle {
75 enum fw3_family family;
77 struct xtc_handle *handle;
81 struct fw3_ipt_handle *h;
88 struct xtables_rule_match *matches;
89 struct xtables_target *target;
98 struct fw3_ipt_handle *fw3_ipt_open(enum fw3_family family,
99 enum fw3_table table);
101 void fw3_ipt_set_policy(struct fw3_ipt_handle *h, const char *chain,
102 enum fw3_flag policy);
104 void fw3_ipt_delete_chain(struct fw3_ipt_handle *h, const char *chain);
105 void fw3_ipt_delete_rules(struct fw3_ipt_handle *h, const char *target);
107 void fw3_ipt_create_chain(struct fw3_ipt_handle *h, const char *fmt, ...);
109 void fw3_ipt_flush(struct fw3_ipt_handle *h);
111 void fw3_ipt_commit(struct fw3_ipt_handle *h);
113 struct fw3_ipt_rule *fw3_ipt_rule_new(struct fw3_ipt_handle *h);
115 void fw3_ipt_rule_proto(struct fw3_ipt_rule *r, struct fw3_protocol *proto);
117 void fw3_ipt_rule_in_out(struct fw3_ipt_rule *r,
118 struct fw3_device *in, struct fw3_device *out);
120 void fw3_ipt_rule_src_dest(struct fw3_ipt_rule *r,
121 struct fw3_address *src, struct fw3_address *dest);
123 void fw3_ipt_rule_sport_dport(struct fw3_ipt_rule *r,
124 struct fw3_port *sp, struct fw3_port *dp);
126 void fw3_ipt_rule_mac(struct fw3_ipt_rule *r, struct fw3_mac *mac);
128 void fw3_ipt_rule_icmptype(struct fw3_ipt_rule *r, struct fw3_icmptype *icmp);
130 void fw3_ipt_rule_limit(struct fw3_ipt_rule *r, struct fw3_limit *limit);
132 void fw3_ipt_rule_ipset(struct fw3_ipt_rule *r, struct fw3_ipset *ipset,
135 void fw3_ipt_rule_time(struct fw3_ipt_rule *r, struct fw3_time *time);
137 void fw3_ipt_rule_mark(struct fw3_ipt_rule *r, struct fw3_mark *mark);
139 void fw3_ipt_rule_comment(struct fw3_ipt_rule *r, const char *fmt, ...);
141 void fw3_ipt_rule_extra(struct fw3_ipt_rule *r, const char *extra);
143 void fw3_ipt_rule_addarg(struct fw3_ipt_rule *r, bool inv,
144 const char *k, const char *v);
146 struct fw3_ipt_rule * fw3_ipt_rule_create(struct fw3_ipt_handle *handle,
147 struct fw3_protocol *proto,
148 struct fw3_device *in,
149 struct fw3_device *out,
150 struct fw3_address *src,
151 struct fw3_address *dest);
153 void fw3_ipt_rule_append(struct fw3_ipt_rule *r, const char *fmt, ...);
156 fw3_ipt_rule_target(struct fw3_ipt_rule *r, const char *fmt, ...)
162 vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
165 fw3_ipt_rule_addarg(r, false, "-j", buf);