ip6tables.h revision b6db33196870d3ec401a7ca87234dd2bc379c413 
1#ifndef _IP6TABLES_USER_H
2#define _IP6TABLES_USER_H
3
4#include "iptables_common.h"
5#include "libiptc/libip6tc.h"
6
7/* Include file for additions: new matches and targets. */
8struct ip6tables_match
9{
10	struct ip6tables_match *next;
11
12	ip6t_chainlabel name;
13
14	const char *version;
15
16	/* Size of match data. */
17	size_t size;
18
19	/* Size of match data relevent for userspace comparison purposes */
20	size_t userspacesize;
21
22	/* Function which prints out usage message. */
23	void (*help)(void);
24
25	/* Initialize the match. */
26	void (*init)(struct ip6t_entry_match *m, unsigned int *nfcache);
27
28	/* Function which parses command options; returns true if it
29	   ate an option */
30	int (*parse)(int c, char **argv, int invert, unsigned int *flags,
31		     const struct ip6t_entry *entry,
32		     unsigned int *nfcache,
33		     struct ip6t_entry_match **match);
34
35	/* Final check; exit if not ok. */
36	void (*final_check)(unsigned int flags);
37
38	/* Prints out the match iff non-NULL: put space at end */
39	void (*print)(const struct ip6t_ip6 *ip,
40		      const struct ip6t_entry_match *match, int numeric);
41
42	/* Saves the union ipt_matchinfo in parsable form to stdout. */
43	void (*save)(const struct ip6t_ip6 *ip,
44		     const struct ip6t_entry_match *match);
45
46	/* Pointer to list of extra command-line options */
47	const struct option *extra_opts;
48
49	/* Ignore these men behind the curtain: */
50	unsigned int option_offset;
51	struct ip6t_entry_match *m;
52	unsigned int mflags;
53};
54
55struct ip6tables_target
56{
57	struct ip6tables_target *next;
58
59	ip6t_chainlabel name;
60
61	const char *version;
62
63	/* Size of target data. */
64	size_t size;
65
66	/* Size of target data relevent for userspace comparison purposes */
67	size_t userspacesize;
68
69	/* Function which prints out usage message. */
70	void (*help)(void);
71
72	/* Initialize the target. */
73	void (*init)(struct ip6t_entry_target *t, unsigned int *nfcache);
74
75	/* Function which parses command options; returns true if it
76	   ate an option */
77	int (*parse)(int c, char **argv, int invert, unsigned int *flags,
78		     const struct ip6t_entry *entry,
79		     struct ip6t_entry_target **target);
80
81	/* Final check; exit if not ok. */
82	void (*final_check)(unsigned int flags);
83
84	/* Prints out the target iff non-NULL: put space at end */
85	void (*print)(const struct ip6t_ip6 *ip,
86		      const struct ip6t_entry_target *target, int numeric);
87
88	/* Saves the targinfo in parsable form to stdout. */
89	void (*save)(const struct ip6t_ip6 *ip,
90		     const struct ip6t_entry_target *target);
91
92	/* Pointer to list of extra command-line options */
93	struct option *extra_opts;
94
95	/* Ignore these men behind the curtain: */
96	unsigned int option_offset;
97	struct ip6t_entry_target *t;
98	unsigned int tflags;
99};
100
101/* Your shared library should call one of these. */
102extern void register_match6(struct ip6tables_match *me);
103extern void register_target6(struct ip6tables_target *me);
104
105extern int do_command6(int argc, char *argv[], char **table,
106		       ip6tc_handle_t *handle);
107/* Keeping track of external matches and targets: linked lists. */
108extern struct ip6tables_match *ip6tables_matches;
109extern struct ip6tables_target *ip6tables_targets;
110
111enum ip6t_tryload {
112	DONT_LOAD,
113	TRY_LOAD,
114	LOAD_MUST_SUCCEED
115};
116
117extern struct ip6tables_target *find_target6(const char *name, enum ip6t_tryload);
118extern struct ip6tables_match *find_match6(const char *name, enum ip6t_tryload);
119#endif /*_IP6TABLES_USER_H*/
120