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 #define _GNU_SOURCE /* RTLD_NEXT */
24 #include <libiptc/libiptc.h>
25 #include <libiptc/libip6tc.h>
31 #include <sys/utsname.h>
35 /* xtables interface */
36 #if (XTABLES_VERSION_CODE == 10 || XTABLES_VERSION_CODE == 11)
37 # include "xtables-10.h"
38 #elif (XTABLES_VERSION_CODE == 5)
39 # include "xtables-5.h"
41 # error "Unsupported xtables version"
44 #ifndef DISABLE_STATIC_EXTENSIONS
45 /* libipt*ext.so interfaces */
46 extern void init_extensions(void);
47 extern void init_extensions4(void);
48 extern void init_extensions6(void);
50 static inline void init_extensions(void) { }
51 static inline void init_extensions4(void) { }
52 static inline void init_extensions6(void) { }
55 /* Required by certain extensions like SNAT and DNAT */
56 extern int kernel_version
;
57 void get_kernel_version(void);
59 struct fw3_ipt_handle
{
60 enum fw3_family family
;
66 struct fw3_ipt_handle
*h
;
73 struct xtables_rule_match
*matches
;
74 struct xtables_target
*target
;
83 struct fw3_ipt_handle
*fw3_ipt_open(enum fw3_family family
,
84 enum fw3_table table
);
86 void fw3_ipt_set_policy(struct fw3_ipt_handle
*h
, const char *chain
,
87 enum fw3_flag policy
);
90 void fw3_ipt_flush_chain(struct fw3_ipt_handle
*h
, const char *chain
);
91 void fw3_ipt_delete_chain(struct fw3_ipt_handle
*h
, const char *chain
);
93 void fw3_ipt_delete_id_rules(struct fw3_ipt_handle
*h
, const char *chain
);
95 void fw3_ipt_create_chain(struct fw3_ipt_handle
*h
, const char *fmt
, ...);
97 void fw3_ipt_flush(struct fw3_ipt_handle
*h
);
99 void fw3_ipt_gc(struct fw3_ipt_handle
*h
);
101 void fw3_ipt_commit(struct fw3_ipt_handle
*h
);
103 void fw3_ipt_close(struct fw3_ipt_handle
*h
);
105 struct fw3_ipt_rule
*fw3_ipt_rule_new(struct fw3_ipt_handle
*h
);
107 void fw3_ipt_rule_proto(struct fw3_ipt_rule
*r
, struct fw3_protocol
*proto
);
109 void fw3_ipt_rule_in_out(struct fw3_ipt_rule
*r
,
110 struct fw3_device
*in
, struct fw3_device
*out
);
112 void fw3_ipt_rule_src_dest(struct fw3_ipt_rule
*r
,
113 struct fw3_address
*src
, struct fw3_address
*dest
);
115 void fw3_ipt_rule_sport_dport(struct fw3_ipt_rule
*r
,
116 struct fw3_port
*sp
, struct fw3_port
*dp
);
118 void fw3_ipt_rule_device(struct fw3_ipt_rule
*r
, const char *device
, bool out
);
120 void fw3_ipt_rule_mac(struct fw3_ipt_rule
*r
, struct fw3_mac
*mac
);
122 void fw3_ipt_rule_icmptype(struct fw3_ipt_rule
*r
, struct fw3_icmptype
*icmp
);
124 void fw3_ipt_rule_limit(struct fw3_ipt_rule
*r
, struct fw3_limit
*limit
);
126 void fw3_ipt_rule_ipset(struct fw3_ipt_rule
*r
, struct fw3_setmatch
*match
);
128 void fw3_ipt_rule_time(struct fw3_ipt_rule
*r
, struct fw3_time
*time
);
130 void fw3_ipt_rule_mark(struct fw3_ipt_rule
*r
, struct fw3_mark
*mark
);
132 void fw3_ipt_rule_comment(struct fw3_ipt_rule
*r
, const char *fmt
, ...);
134 void fw3_ipt_rule_extra(struct fw3_ipt_rule
*r
, const char *extra
);
136 void fw3_ipt_rule_addarg(struct fw3_ipt_rule
*r
, bool inv
,
137 const char *k
, const char *v
);
139 struct fw3_ipt_rule
* fw3_ipt_rule_create(struct fw3_ipt_handle
*handle
,
140 struct fw3_protocol
*proto
,
141 struct fw3_device
*in
,
142 struct fw3_device
*out
,
143 struct fw3_address
*src
,
144 struct fw3_address
*dest
);
146 void __fw3_ipt_rule_append(struct fw3_ipt_rule
*r
, bool repl
,
147 const char *fmt
, ...);
149 #define fw3_ipt_rule_append(rule, ...) \
150 __fw3_ipt_rule_append(rule, false, __VA_ARGS__)
152 #define fw3_ipt_rule_replace(rule, ...) \
153 __fw3_ipt_rule_append(rule, true, __VA_ARGS__)
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
);
168 void xtables_register_match(struct xtables_match
*me
);
169 void xtables_register_target(struct xtables_target
*me
);