diff options
Diffstat (limited to 'include/libiptc/libip6tc.h')
-rw-r--r-- | include/libiptc/libip6tc.h | 69 |
1 files changed, 38 insertions, 31 deletions
diff --git a/include/libiptc/libip6tc.h b/include/libiptc/libip6tc.h index 7a247c4..33ec69d 100644 --- a/include/libiptc/libip6tc.h +++ b/include/libiptc/libip6tc.h @@ -2,7 +2,13 @@ #define _LIBIP6TC_H /* Library which manipulates firewall rules. Version 0.2. */ +#include <linux/types.h> #include <libiptc/ipt_kernel_headers.h> +#ifdef __cplusplus +# include <climits> +#else +# include <limits.h> /* INT_MAX in ip6_tables.h */ +#endif #include <linux/netfilter_ipv6/ip6_tables.h> #ifndef IP6T_MIN_ALIGN @@ -10,6 +16,8 @@ #endif #define IP6T_ALIGN(s) (((s) + (IP6T_MIN_ALIGN-1)) & ~(IP6T_MIN_ALIGN-1)) +struct ip6tc_handle; + typedef char ip6t_chainlabel[32]; #define IP6TC_LABEL_ACCEPT "ACCEPT" @@ -17,41 +25,38 @@ typedef char ip6t_chainlabel[32]; #define IP6TC_LABEL_QUEUE "QUEUE" #define IP6TC_LABEL_RETURN "RETURN" -/* Transparent handle type. */ -typedef struct ip6tc_handle *ip6tc_handle_t; - /* Does this chain exist? */ -int ip6tc_is_chain(const char *chain, const ip6tc_handle_t handle); +int ip6tc_is_chain(const char *chain, struct ip6tc_handle *const handle); /* Take a snapshot of the rules. Returns NULL on error. */ -ip6tc_handle_t ip6tc_init(const char *tablename); +struct ip6tc_handle *ip6tc_init(const char *tablename); /* Cleanup after ip6tc_init(). */ -void ip6tc_free(ip6tc_handle_t *h); +void ip6tc_free(struct ip6tc_handle *h); /* Iterator functions to run through the chains. Returns NULL at end. */ -const char *ip6tc_first_chain(ip6tc_handle_t *handle); -const char *ip6tc_next_chain(ip6tc_handle_t *handle); +const char *ip6tc_first_chain(struct ip6tc_handle *handle); +const char *ip6tc_next_chain(struct ip6tc_handle *handle); /* Get first rule in the given chain: NULL for empty chain. */ const struct ip6t_entry *ip6tc_first_rule(const char *chain, - ip6tc_handle_t *handle); + struct ip6tc_handle *handle); /* Returns NULL when rules run out. */ const struct ip6t_entry *ip6tc_next_rule(const struct ip6t_entry *prev, - ip6tc_handle_t *handle); + struct ip6tc_handle *handle); /* Returns a pointer to the target name of this position. */ const char *ip6tc_get_target(const struct ip6t_entry *e, - ip6tc_handle_t *handle); + struct ip6tc_handle *handle); /* Is this a built-in chain? */ -int ip6tc_builtin(const char *chain, const ip6tc_handle_t handle); +int ip6tc_builtin(const char *chain, struct ip6tc_handle *const handle); /* Get the policy of a given built-in chain */ const char *ip6tc_get_policy(const char *chain, struct ip6t_counters *counters, - ip6tc_handle_t *handle); + struct ip6tc_handle *handle); /* These functions return TRUE for OK or 0 and set errno. If errno == 0, it means there was a version error (ie. upgrade libiptc). */ @@ -61,89 +66,89 @@ const char *ip6tc_get_policy(const char *chain, int ip6tc_insert_entry(const ip6t_chainlabel chain, const struct ip6t_entry *e, unsigned int rulenum, - ip6tc_handle_t *handle); + struct ip6tc_handle *handle); /* Atomically replace rule `rulenum' in `chain' with `fw'. */ int ip6tc_replace_entry(const ip6t_chainlabel chain, const struct ip6t_entry *e, unsigned int rulenum, - ip6tc_handle_t *handle); + struct ip6tc_handle *handle); /* Append entry `fw' to chain `chain'. Equivalent to insert with rulenum = length of chain. */ int ip6tc_append_entry(const ip6t_chainlabel chain, const struct ip6t_entry *e, - ip6tc_handle_t *handle); + struct ip6tc_handle *handle); /* Delete the first rule in `chain' which matches `fw'. */ int ip6tc_delete_entry(const ip6t_chainlabel chain, const struct ip6t_entry *origfw, unsigned char *matchmask, - ip6tc_handle_t *handle); + struct ip6tc_handle *handle); /* Delete the rule in position `rulenum' in `chain'. */ int ip6tc_delete_num_entry(const ip6t_chainlabel chain, unsigned int rulenum, - ip6tc_handle_t *handle); + struct ip6tc_handle *handle); /* Check the packet `fw' on chain `chain'. Returns the verdict, or NULL and sets errno. */ const char *ip6tc_check_packet(const ip6t_chainlabel chain, struct ip6t_entry *, - ip6tc_handle_t *handle); + struct ip6tc_handle *handle); /* Flushes the entries in the given chain (ie. empties chain). */ int ip6tc_flush_entries(const ip6t_chainlabel chain, - ip6tc_handle_t *handle); + struct ip6tc_handle *handle); /* Zeroes the counters in a chain. */ int ip6tc_zero_entries(const ip6t_chainlabel chain, - ip6tc_handle_t *handle); + struct ip6tc_handle *handle); /* Creates a new chain. */ int ip6tc_create_chain(const ip6t_chainlabel chain, - ip6tc_handle_t *handle); + struct ip6tc_handle *handle); /* Deletes a chain. */ int ip6tc_delete_chain(const ip6t_chainlabel chain, - ip6tc_handle_t *handle); + struct ip6tc_handle *handle); /* Renames a chain. */ int ip6tc_rename_chain(const ip6t_chainlabel oldname, const ip6t_chainlabel newname, - ip6tc_handle_t *handle); + struct ip6tc_handle *handle); /* Sets the policy on a built-in chain. */ int ip6tc_set_policy(const ip6t_chainlabel chain, const ip6t_chainlabel policy, struct ip6t_counters *counters, - ip6tc_handle_t *handle); + struct ip6tc_handle *handle); /* Get the number of references to this chain */ int ip6tc_get_references(unsigned int *ref, const ip6t_chainlabel chain, - ip6tc_handle_t *handle); + struct ip6tc_handle *handle); /* read packet and byte counters for a specific rule */ struct ip6t_counters *ip6tc_read_counter(const ip6t_chainlabel chain, unsigned int rulenum, - ip6tc_handle_t *handle); + struct ip6tc_handle *handle); /* zero packet and byte counters for a specific rule */ int ip6tc_zero_counter(const ip6t_chainlabel chain, unsigned int rulenum, - ip6tc_handle_t *handle); + struct ip6tc_handle *handle); /* set packet and byte counters for a specific rule */ int ip6tc_set_counter(const ip6t_chainlabel chain, unsigned int rulenum, struct ip6t_counters *counters, - ip6tc_handle_t *handle); + struct ip6tc_handle *handle); /* Makes the actual changes. */ -int ip6tc_commit(ip6tc_handle_t *handle); +int ip6tc_commit(struct ip6tc_handle *handle); /* Get raw socket. */ -int ip6tc_get_raw_socket(); +int ip6tc_get_raw_socket(void); /* Translates errno numbers into more human-readable form than strerror. */ const char *ip6tc_strerror(int err); @@ -151,4 +156,6 @@ const char *ip6tc_strerror(int err); /* Return prefix length, or -1 if not contiguous */ int ipv6_prefix_length(const struct in6_addr *a); +extern void dump_entries6(struct ip6tc_handle *const); + #endif /* _LIBIP6TC_H */ |