ip6tables.h revision a258ad7002ae4b4f366800f512db938fb78d0661 
1#ifndef _IP6TABLES_USER_H
2#define _IP6TABLES_USER_H
3
4#include "iptables_common.h"
5#include "libiptc/libip6tc.h"
6
7#ifndef IP6T_LIB_DIR
8#define IP6T_LIB_DIR "/usr/local/lib/iptables"
9#endif
10
11struct ip6tables_rule_match
12{
13	struct ip6tables_rule_match *next;
14
15	struct ip6tables_match *match;
16
17	/* Multiple matches of the same type: the ones before
18	   the current one are completed from parsing point of view */
19	unsigned int completed;
20};
21
22/* Include file for additions: new matches and targets. */
23struct ip6tables_match
24{
25	struct ip6tables_match *next;
26
27	ip6t_chainlabel name;
28
29	const char *version;
30
31	/* Size of match data. */
32	size_t size;
33
34	/* Size of match data relevent for userspace comparison purposes */
35	size_t userspacesize;
36
37	/* Function which prints out usage message. */
38	void (*help)(void);
39
40	/* Initialize the match. */
41	void (*init)(struct ip6t_entry_match *m, unsigned int *nfcache);
42
43	/* Function which parses command options; returns true if it
44	   ate an option */
45	int (*parse)(int c, char **argv, int invert, unsigned int *flags,
46		     const struct ip6t_entry *entry,
47		     unsigned int *nfcache,
48		     struct ip6t_entry_match **match);
49
50	/* Final check; exit if not ok. */
51	void (*final_check)(unsigned int flags);
52
53	/* Prints out the match iff non-NULL: put space at end */
54	void (*print)(const struct ip6t_ip6 *ip,
55		      const struct ip6t_entry_match *match, int numeric);
56
57	/* Saves the union ipt_matchinfo in parsable form to stdout. */
58	void (*save)(const struct ip6t_ip6 *ip,
59		     const struct ip6t_entry_match *match);
60
61	/* Pointer to list of extra command-line options */
62	const struct option *extra_opts;
63
64	/* Ignore these men behind the curtain: */
65	unsigned int option_offset;
66	struct ip6t_entry_match *m;
67	unsigned int mflags;
68#ifdef NO_SHARED_LIBS
69	unsigned int loaded; /* simulate loading so options are merged properly */
70#endif
71};
72
73struct ip6tables_target
74{
75	struct ip6tables_target *next;
76
77	ip6t_chainlabel name;
78
79	const char *version;
80
81	/* Size of target data. */
82	size_t size;
83
84	/* Size of target data relevent for userspace comparison purposes */
85	size_t userspacesize;
86
87	/* Function which prints out usage message. */
88	void (*help)(void);
89
90	/* Initialize the target. */
91	void (*init)(struct ip6t_entry_target *t, unsigned int *nfcache);
92
93	/* Function which parses command options; returns true if it
94	   ate an option */
95	int (*parse)(int c, char **argv, int invert, unsigned int *flags,
96		     const struct ip6t_entry *entry,
97		     struct ip6t_entry_target **target);
98
99	/* Final check; exit if not ok. */
100	void (*final_check)(unsigned int flags);
101
102	/* Prints out the target iff non-NULL: put space at end */
103	void (*print)(const struct ip6t_ip6 *ip,
104		      const struct ip6t_entry_target *target, int numeric);
105
106	/* Saves the targinfo in parsable form to stdout. */
107	void (*save)(const struct ip6t_ip6 *ip,
108		     const struct ip6t_entry_target *target);
109
110	/* Pointer to list of extra command-line options */
111	struct option *extra_opts;
112
113	/* Ignore these men behind the curtain: */
114	unsigned int option_offset;
115	struct ip6t_entry_target *t;
116	unsigned int tflags;
117	unsigned int used;
118#ifdef NO_SHARED_LIBS
119	unsigned int loaded; /* simulate loading so options are merged properly */
120#endif
121};
122
123extern int line;
124
125/* Your shared library should call one of these. */
126extern void register_match6(struct ip6tables_match *me);
127extern void register_target6(struct ip6tables_target *me);
128
129extern int do_command6(int argc, char *argv[], char **table,
130		       ip6tc_handle_t *handle);
131/* Keeping track of external matches and targets: linked lists. */
132extern struct ip6tables_match *ip6tables_matches;
133extern struct ip6tables_target *ip6tables_targets;
134
135enum ip6t_tryload {
136	DONT_LOAD,
137	DURING_LOAD,
138	TRY_LOAD,
139	LOAD_MUST_SUCCEED
140};
141
142extern struct ip6tables_target *find_target(const char *name, enum ip6t_tryload);
143extern struct ip6tables_match *find_match(const char *name, enum ip6t_tryload, struct ip6tables_rule_match **match);
144
145extern void parse_interface(const char *arg, char *vianame, unsigned char *mask);
146
147extern int for_each_chain(int (*fn)(const ip6t_chainlabel, int, ip6tc_handle_t *), int verbose, int builtinstoo, ip6tc_handle_t *handle);
148extern int flush_entries(const ip6t_chainlabel chain, int verbose, ip6tc_handle_t *handle);
149extern int delete_chain(const ip6t_chainlabel chain, int verbose, ip6tc_handle_t *handle);
150extern int ip6tables_insmod(const char *modname, const char *modprobe);
151
152#endif /*_IP6TABLES_USER_H*/
153