Show iptables.h syntax highlighted
#ifndef _IPTABLES_USER_H
#define _IPTABLES_USER_H
#include "iptables_common.h"
#include "libiptc/libiptc.h"
/* Include file for additions: new matches and targets. */
struct iptables_match
{
struct iptables_match *next;
ipt_chainlabel name;
const char *version;
/* Size of match data. */
size_t size;
/* Size of match data relevent for userspace comparison purposes */
size_t userspacesize;
/* Function which prints out usage message. */
void (*help)(void);
/* Initialize the match. */
void (*init)(struct ipt_entry_match *m, unsigned int *nfcache);
/* Function which parses command options; returns true if it
ate an option */
int (*parse)(int c, char **argv, int invert, unsigned int *flags,
const struct ipt_entry *entry,
unsigned int *nfcache,
struct ipt_entry_match **match);
/* Final check; exit if not ok. */
void (*final_check)(unsigned int flags);
/* Prints out the match iff non-NULL: put space at end */
void (*print)(const struct ipt_ip *ip,
const struct ipt_entry_match *match, int numeric);
/* Saves the match info in parsable form to stdout. */
void (*save)(const struct ipt_ip *ip,
const struct ipt_entry_match *match);
/* Pointer to list of extra command-line options */
const struct option *extra_opts;
/* Ignore these men behind the curtain: */
unsigned int option_offset;
struct ipt_entry_match *m;
unsigned int mflags;
unsigned int used;
#ifdef NO_SHARED_LIBS
unsigned int loaded; /* simulate loading so options are merged properly */
#endif
};
struct iptables_target
{
struct iptables_target *next;
ipt_chainlabel name;
const char *version;
/* Size of target data. */
size_t size;
/* Size of target data relevent for userspace comparison purposes */
size_t userspacesize;
/* Function which prints out usage message. */
void (*help)(void);
/* Initialize the target. */
void (*init)(struct ipt_entry_target *t, unsigned int *nfcache);
/* Function which parses command options; returns true if it
ate an option */
int (*parse)(int c, char **argv, int invert, unsigned int *flags,
const struct ipt_entry *entry,
struct ipt_entry_target **target);
/* Final check; exit if not ok. */
void (*final_check)(unsigned int flags);
/* Prints out the target iff non-NULL: put space at end */
void (*print)(const struct ipt_ip *ip,
const struct ipt_entry_target *target, int numeric);
/* Saves the targinfo in parsable form to stdout. */
void (*save)(const struct ipt_ip *ip,
const struct ipt_entry_target *target);
/* Pointer to list of extra command-line options */
struct option *extra_opts;
/* Ignore these men behind the curtain: */
unsigned int option_offset;
struct ipt_entry_target *t;
unsigned int tflags;
unsigned int used;
#ifdef NO_SHARED_LIBS
unsigned int loaded; /* simulate loading so options are merged properly */
#endif
};
/* Your shared library should call one of these. */
extern void register_match(struct iptables_match *me);
extern void register_target(struct iptables_target *me);
extern struct in_addr *dotted_to_addr(const char *dotted);
extern char *addr_to_dotted(const struct in_addr *addrp);
extern char *addr_to_anyname(const struct in_addr *addr);
extern char *mask_to_dotted(const struct in_addr *mask);
extern void parse_hostnetworkmask(const char *name, struct in_addr **addrpp,
struct in_addr *maskp, unsigned int *naddrs);
extern u_int16_t parse_protocol(const char *s);
extern int do_command(int argc, char *argv[], char **table,
iptc_handle_t *handle);
/* Keeping track of external matches and targets: linked lists. */
extern struct iptables_match *iptables_matches;
extern struct iptables_target *iptables_targets;
enum ipt_tryload {
DONT_LOAD,
TRY_LOAD,
LOAD_MUST_SUCCEED
};
extern struct iptables_target *find_target(const char *name, enum ipt_tryload);
extern struct iptables_match *find_match(const char *name, enum ipt_tryload);
extern int delete_chain(const ipt_chainlabel chain, int verbose,
iptc_handle_t *handle);
extern int flush_entries(const ipt_chainlabel chain, int verbose,
iptc_handle_t *handle);
extern int for_each_chain(int (*fn)(const ipt_chainlabel, int, iptc_handle_t *),
int verbose, int builtinstoo, iptc_handle_t *handle);
#endif /*_IPTABLES_USER_H*/
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