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 void init_extensions(void);
38 void init_extensions4(void);
39 void init_extensions6(void);
41 /* Required by certain extensions like SNAT and DNAT */
42 extern int kernel_version;
43 void get_kernel_version(void);
45 struct fw3_ipt_handle {
46 enum fw3_family family;
48 struct xtc_handle *handle;
52 struct fw3_ipt_handle *h;
59 struct xtables_rule_match *matches;
60 struct xtables_target *target;
69 struct fw3_ipt_handle *fw3_ipt_open(enum fw3_family family,
70 enum fw3_table table);
72 void fw3_ipt_set_policy(struct fw3_ipt_handle *h, const char *chain,
73 enum fw3_flag policy);
75 void fw3_ipt_delete_chain(struct fw3_ipt_handle *h, const char *chain);
76 void fw3_ipt_delete_rules(struct fw3_ipt_handle *h, const char *target);
79 fw3_ipt_create_chain(struct fw3_ipt_handle *h, const char *fmt, ...)
85 vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
89 printf("-N %s\n", buf);
91 iptc_create_chain(buf, h->handle);
94 void fw3_ipt_flush(struct fw3_ipt_handle *h);
96 void fw3_ipt_commit(struct fw3_ipt_handle *h);
98 struct fw3_ipt_rule *fw3_ipt_rule_new(struct fw3_ipt_handle *h);
100 void fw3_ipt_rule_proto(struct fw3_ipt_rule *r, struct fw3_protocol *proto);
102 void fw3_ipt_rule_in_out(struct fw3_ipt_rule *r,
103 struct fw3_device *in, struct fw3_device *out);
105 void fw3_ipt_rule_src_dest(struct fw3_ipt_rule *r,
106 struct fw3_address *src, struct fw3_address *dest);
108 void fw3_ipt_rule_sport_dport(struct fw3_ipt_rule *r,
109 struct fw3_port *sp, struct fw3_port *dp);
111 void fw3_ipt_rule_mac(struct fw3_ipt_rule *r, struct fw3_mac *mac);
113 void fw3_ipt_rule_icmptype(struct fw3_ipt_rule *r, struct fw3_icmptype *icmp);
115 void fw3_ipt_rule_limit(struct fw3_ipt_rule *r, struct fw3_limit *limit);
117 void fw3_ipt_rule_ipset(struct fw3_ipt_rule *r, struct fw3_ipset *ipset,
120 void fw3_ipt_rule_time(struct fw3_ipt_rule *r, struct fw3_time *time);
122 void fw3_ipt_rule_mark(struct fw3_ipt_rule *r, struct fw3_mark *mark);
124 void fw3_ipt_rule_comment(struct fw3_ipt_rule *r, const char *fmt, ...);
126 void fw3_ipt_rule_extra(struct fw3_ipt_rule *r, const char *extra);
128 void fw3_ipt_rule_addarg(struct fw3_ipt_rule *r, bool inv,
129 const char *k, const char *v);
131 struct fw3_ipt_rule * fw3_ipt_rule_create(struct fw3_ipt_handle *handle,
132 struct fw3_protocol *proto,
133 struct fw3_device *in,
134 struct fw3_device *out,
135 struct fw3_address *src,
136 struct fw3_address *dest);
138 void fw3_ipt_rule_append(struct fw3_ipt_rule *r, const char *fmt, ...);
141 fw3_ipt_rule_target(struct fw3_ipt_rule *r, const char *fmt, ...)
147 vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
150 fw3_ipt_rule_addarg(r, false, "-j", buf);