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 #ifndef DISABLE_STATIC_EXTENSIONS
23 /* libipt*ext.so interfaces */
24 extern void init_extensions(void);
25 extern void init_extensions4(void);
26 extern void init_extensions6(void);
28 static inline void init_extensions(void) { }
29 static inline void init_extensions4(void) { }
30 static inline void init_extensions6(void) { }
33 /* Required by certain extensions like SNAT and DNAT */
34 extern int kernel_version
;
35 void get_kernel_version(void);
37 struct fw3_ipt_handle
{
38 enum fw3_family family
;
45 struct fw3_ipt_handle
*fw3_ipt_open(enum fw3_family family
,
46 enum fw3_table table
);
48 void fw3_ipt_set_policy(struct fw3_ipt_handle
*h
, const char *chain
,
49 enum fw3_flag policy
);
52 void fw3_ipt_flush_chain(struct fw3_ipt_handle
*h
, const char *chain
);
53 void fw3_ipt_delete_chain(struct fw3_ipt_handle
*h
, const char *chain
);
55 void fw3_ipt_delete_id_rules(struct fw3_ipt_handle
*h
, const char *chain
);
57 void fw3_ipt_create_chain(struct fw3_ipt_handle
*h
, const char *fmt
, ...);
59 void fw3_ipt_flush(struct fw3_ipt_handle
*h
);
61 void fw3_ipt_gc(struct fw3_ipt_handle
*h
);
63 void fw3_ipt_commit(struct fw3_ipt_handle
*h
);
65 void fw3_ipt_close(struct fw3_ipt_handle
*h
);
67 struct fw3_ipt_rule
*fw3_ipt_rule_new(struct fw3_ipt_handle
*h
);
69 void fw3_ipt_rule_proto(struct fw3_ipt_rule
*r
, struct fw3_protocol
*proto
);
71 void fw3_ipt_rule_in_out(struct fw3_ipt_rule
*r
,
72 struct fw3_device
*in
, struct fw3_device
*out
);
74 void fw3_ipt_rule_src_dest(struct fw3_ipt_rule
*r
,
75 struct fw3_address
*src
, struct fw3_address
*dest
);
77 void fw3_ipt_rule_sport_dport(struct fw3_ipt_rule
*r
,
78 struct fw3_port
*sp
, struct fw3_port
*dp
);
80 void fw3_ipt_rule_device(struct fw3_ipt_rule
*r
, const char *device
, bool out
);
82 void fw3_ipt_rule_mac(struct fw3_ipt_rule
*r
, struct fw3_mac
*mac
);
84 void fw3_ipt_rule_icmptype(struct fw3_ipt_rule
*r
, struct fw3_icmptype
*icmp
);
86 void fw3_ipt_rule_limit(struct fw3_ipt_rule
*r
, struct fw3_limit
*limit
);
88 void fw3_ipt_rule_ipset(struct fw3_ipt_rule
*r
, struct fw3_setmatch
*match
);
90 void fw3_ipt_rule_helper(struct fw3_ipt_rule
*r
, struct fw3_cthelpermatch
*match
);
92 void fw3_ipt_rule_time(struct fw3_ipt_rule
*r
, struct fw3_time
*time
);
94 void fw3_ipt_rule_mark(struct fw3_ipt_rule
*r
, struct fw3_mark
*mark
);
96 void fw3_ipt_rule_dscp(struct fw3_ipt_rule
*r
, struct fw3_dscp
*dscp
);
98 void fw3_ipt_rule_comment(struct fw3_ipt_rule
*r
, const char *fmt
, ...);
100 void fw3_ipt_rule_extra(struct fw3_ipt_rule
*r
, const char *extra
);
102 void fw3_ipt_rule_addarg(struct fw3_ipt_rule
*r
, bool inv
,
103 const char *k
, const char *v
);
105 struct fw3_ipt_rule
* fw3_ipt_rule_create(struct fw3_ipt_handle
*handle
,
106 struct fw3_protocol
*proto
,
107 struct fw3_device
*in
,
108 struct fw3_device
*out
,
109 struct fw3_address
*src
,
110 struct fw3_address
*dest
);
112 void __fw3_ipt_rule_append(struct fw3_ipt_rule
*r
, bool repl
,
113 const char *fmt
, ...);
115 #define fw3_ipt_rule_append(rule, ...) \
116 __fw3_ipt_rule_append(rule, false, __VA_ARGS__)
118 #define fw3_ipt_rule_replace(rule, ...) \
119 __fw3_ipt_rule_append(rule, true, __VA_ARGS__)
122 fw3_ipt_rule_target(struct fw3_ipt_rule
*r
, const char *fmt
, ...)
128 vsnprintf(buf
, sizeof(buf
) - 1, fmt
, ap
);
131 fw3_ipt_rule_addarg(r
, false, "-j", buf
);