2 * firewall3 - 3rd OpenWrt UCI firewall implementation
4 * Copyright (C) 2013 Jo-Philipp Wich <jo@mein.io>
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>
29 #include <sys/utsname.h>
33 #define FW3_ID_MAGIC 0x66773300 /* 'f' 'w' '3' */
34 #define FW3_ID_MASK 0xffffff00
36 /* xtables interface */
37 #if (XTABLES_VERSION_CODE == 10 || XTABLES_VERSION_CODE == 11)
38 # include "xtables-10.h"
39 #elif (XTABLES_VERSION_CODE == 5)
40 # include "xtables-5.h"
42 # error "Unsupported xtables version"
45 #ifndef DISABLE_STATIC_EXTENSIONS
46 /* libipt*ext.so interfaces */
47 extern void init_extensions(void);
48 extern void init_extensions4(void);
49 extern void init_extensions6(void);
51 static inline void init_extensions(void) { }
52 static inline void init_extensions4(void) { }
53 static inline void init_extensions6(void) { }
56 /* Required by certain extensions like SNAT and DNAT */
57 extern int kernel_version;
58 void get_kernel_version(void);
60 struct fw3_ipt_handle {
61 enum fw3_family family;
67 struct fw3_ipt_handle *h;
74 struct xtables_rule_match *matches;
75 struct xtables_target *target;
86 struct fw3_ipt_handle *fw3_ipt_open(enum fw3_family family,
87 enum fw3_table table);
89 void fw3_ipt_set_policy(struct fw3_ipt_handle *h, const char *chain,
90 enum fw3_flag policy);
93 void fw3_ipt_flush_chain(struct fw3_ipt_handle *h, const char *chain);
94 void fw3_ipt_delete_chain(struct fw3_ipt_handle *h, const char *chain);
96 void fw3_ipt_delete_id_rules(struct fw3_ipt_handle *h, const char *chain);
98 void fw3_ipt_create_chain(struct fw3_ipt_handle *h, const char *fmt, ...);
100 void fw3_ipt_flush(struct fw3_ipt_handle *h);
102 void fw3_ipt_gc(struct fw3_ipt_handle *h);
104 void fw3_ipt_commit(struct fw3_ipt_handle *h);
106 void fw3_ipt_close(struct fw3_ipt_handle *h);
108 struct fw3_ipt_rule *fw3_ipt_rule_new(struct fw3_ipt_handle *h);
110 void fw3_ipt_rule_proto(struct fw3_ipt_rule *r, struct fw3_protocol *proto);
112 void fw3_ipt_rule_in_out(struct fw3_ipt_rule *r,
113 struct fw3_device *in, struct fw3_device *out);
115 void fw3_ipt_rule_src_dest(struct fw3_ipt_rule *r,
116 struct fw3_address *src, struct fw3_address *dest);
118 void fw3_ipt_rule_sport_dport(struct fw3_ipt_rule *r,
119 struct fw3_port *sp, struct fw3_port *dp);
121 void fw3_ipt_rule_device(struct fw3_ipt_rule *r, const char *device, bool out);
123 void fw3_ipt_rule_mac(struct fw3_ipt_rule *r, struct fw3_mac *mac);
125 void fw3_ipt_rule_icmptype(struct fw3_ipt_rule *r, struct fw3_icmptype *icmp);
127 void fw3_ipt_rule_limit(struct fw3_ipt_rule *r, struct fw3_limit *limit);
129 void fw3_ipt_rule_ipset(struct fw3_ipt_rule *r, struct fw3_setmatch *match);
131 void fw3_ipt_rule_time(struct fw3_ipt_rule *r, struct fw3_time *time);
133 void fw3_ipt_rule_mark(struct fw3_ipt_rule *r, struct fw3_mark *mark);
135 void fw3_ipt_rule_comment(struct fw3_ipt_rule *r, const char *fmt, ...);
137 void fw3_ipt_rule_extra(struct fw3_ipt_rule *r, const char *extra);
139 void fw3_ipt_rule_addarg(struct fw3_ipt_rule *r, bool inv,
140 const char *k, const char *v);
142 struct fw3_ipt_rule * fw3_ipt_rule_create(struct fw3_ipt_handle *handle,
143 struct fw3_protocol *proto,
144 struct fw3_device *in,
145 struct fw3_device *out,
146 struct fw3_address *src,
147 struct fw3_address *dest);
149 void __fw3_ipt_rule_append(struct fw3_ipt_rule *r, bool repl,
150 const char *fmt, ...);
152 #define fw3_ipt_rule_append(rule, ...) \
153 __fw3_ipt_rule_append(rule, false, __VA_ARGS__)
155 #define fw3_ipt_rule_replace(rule, ...) \
156 __fw3_ipt_rule_append(rule, true, __VA_ARGS__)
159 fw3_ipt_rule_target(struct fw3_ipt_rule *r, const char *fmt, ...)
165 vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
168 fw3_ipt_rule_addarg(r, false, "-j", buf);
171 void xtables_register_match(struct xtables_match *me);
172 void xtables_register_target(struct xtables_target *me);