diff options
Diffstat (limited to 'iptables/nft-shared.h')
| -rw-r--r-- | iptables/nft-shared.h | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/iptables/nft-shared.h b/iptables/nft-shared.h new file mode 100644 index 00000000..145f19d1 --- /dev/null +++ b/iptables/nft-shared.h @@ -0,0 +1,195 @@ +#ifndef _NFT_SHARED_H_ +#define _NFT_SHARED_H_ + +#include <stdbool.h> + +#include <libnftnl/rule.h> +#include <libnftnl/expr.h> + +#include "xshared.h" + +#if 0 +#define DEBUGP(x, args...) fprintf(stdout, x, ## args) +#define NLDEBUG +#define DEBUG_DEL +#else +#define DEBUGP(x, args...) +#endif + +/* + * iptables print output emulation + */ + +#define FMT_NUMERIC 0x0001 +#define FMT_NOCOUNTS 0x0002 +#define FMT_KILOMEGAGIGA 0x0004 +#define FMT_OPTIONS 0x0008 +#define FMT_NOTABLE 0x0010 +#define FMT_NOTARGET 0x0020 +#define FMT_VIA 0x0040 +#define FMT_NONEWLINE 0x0080 +#define FMT_LINENUMBERS 0x0100 + +#define FMT_PRINT_RULE (FMT_NOCOUNTS | FMT_OPTIONS | FMT_VIA \ + | FMT_NUMERIC | FMT_NOTABLE) +#define FMT(tab,notab) ((format) & FMT_NOTABLE ? (notab) : (tab)) + +struct xtables_args; + +struct nft_family_ops { + int (*add)(struct nft_rule *r, void *data); + bool (*is_same)(const void *data_a, + const void *data_b); + void (*print_payload)(struct nft_rule_expr *e, + struct nft_rule_expr_iter *iter); + void (*parse_meta)(struct nft_rule_expr *e, uint8_t key, + void *data); + void (*parse_payload)(struct nft_rule_expr_iter *iter, + uint32_t offset, void *data); + void (*parse_immediate)(const char *jumpto, bool nft_goto, void *data); + void (*print_firewall)(struct nft_rule *r, unsigned int num, + unsigned int format); + void (*save_firewall)(const void *data, unsigned int format); + void (*proto_parse)(struct iptables_command_state *cs, + struct xtables_args *args); + void (*post_parse)(int command, struct iptables_command_state *cs, + struct xtables_args *args); + void (*parse_target)(struct xtables_target *t, void *data); + bool (*rule_find)(struct nft_family_ops *ops, struct nft_rule *r, + void *data); +}; + +void add_meta(struct nft_rule *r, uint32_t key); +void add_payload(struct nft_rule *r, int offset, int len); +void add_bitwise_u16(struct nft_rule *r, int mask, int xor); +void add_cmp_ptr(struct nft_rule *r, uint32_t op, void *data, size_t len); +void add_cmp_u8(struct nft_rule *r, uint8_t val, uint32_t op); +void add_cmp_u16(struct nft_rule *r, uint16_t val, uint32_t op); +void add_cmp_u32(struct nft_rule *r, uint32_t val, uint32_t op); +void add_iniface(struct nft_rule *r, char *iface, int invflags); +void add_outiface(struct nft_rule *r, char *iface, int invflags); +void add_addr(struct nft_rule *r, int offset, + void *data, size_t len, int invflags); +void add_proto(struct nft_rule *r, int offset, size_t len, + uint8_t proto, int invflags); +void add_compat(struct nft_rule *r, uint32_t proto, bool inv); + +bool is_same_interfaces(const char *a_iniface, const char *a_outiface, + unsigned const char *a_iniface_mask, + unsigned const char *a_outiface_mask, + const char *b_iniface, const char *b_outiface, + unsigned const char *b_iniface_mask, + unsigned const char *b_outiface_mask); + +void parse_meta(struct nft_rule_expr *e, uint8_t key, char *iniface, + unsigned char *iniface_mask, char *outiface, + unsigned char *outiface_mask, uint8_t *invflags); +void print_proto(uint16_t proto, int invert); +void get_cmp_data(struct nft_rule_expr_iter *iter, + void *data, size_t dlen, bool *inv); +void nft_parse_target(struct nft_rule_expr *e, struct nft_rule_expr_iter *iter, + int family, void *data); +void nft_parse_meta(struct nft_rule_expr *e, struct nft_rule_expr_iter *iter, + int family, void *data); +void nft_parse_payload(struct nft_rule_expr *e, + struct nft_rule_expr_iter *iter, + int family, void *data); +void nft_parse_counter(struct nft_rule_expr *e, + struct nft_rule_expr_iter *iter, + struct xt_counters *counters); +void nft_parse_immediate(struct nft_rule_expr *e, + struct nft_rule_expr_iter *iter, + int family, void *data); +void nft_rule_to_iptables_command_state(struct nft_rule *r, + struct iptables_command_state *cs); +void print_firewall_details(const struct iptables_command_state *cs, + const char *targname, uint8_t flags, + uint8_t invflags, uint8_t proto, + unsigned int num, unsigned int format); +void print_ifaces(const char *iniface, const char *outiface, uint8_t invflags, + unsigned int format); +void print_matches_and_target(struct iptables_command_state *cs, + unsigned int format); +void save_firewall_details(const struct iptables_command_state *cs, + uint8_t invflags, uint16_t proto, + const char *iniface, + unsigned const char *iniface_mask, + const char *outiface, + unsigned const char *outiface_mask, + unsigned int format); +void save_matches_and_target(struct xtables_rule_match *m, + struct xtables_target *target, + const char *jumpto, + uint8_t flags, const void *fw); + +struct nft_family_ops *nft_family_ops_lookup(int family); + +struct nft_handle; +bool nft_ipv46_rule_find(struct nft_family_ops *ops, struct nft_rule *r, + struct iptables_command_state *cs); + +bool compare_targets(struct xtables_target *tg1, struct xtables_target *tg2); + +struct addr_mask { + union { + struct in_addr *v4; + struct in6_addr *v6; + } addr; + + unsigned int naddrs; + + union { + struct in_addr *v4; + struct in6_addr *v6; + } mask; +}; + +struct xtables_args { + int family; + uint16_t proto; + uint8_t flags; + uint8_t invflags; + char iniface[IFNAMSIZ], outiface[IFNAMSIZ]; + unsigned char iniface_mask[IFNAMSIZ], outiface_mask[IFNAMSIZ]; + bool goto_set; + const char *shostnetworkmask, *dhostnetworkmask; + const char *pcnt, *bcnt; + struct addr_mask s, d; + unsigned long long pcnt_cnt, bcnt_cnt; +}; + +#define CMD_NONE 0x0000U +#define CMD_INSERT 0x0001U +#define CMD_DELETE 0x0002U +#define CMD_DELETE_NUM 0x0004U +#define CMD_REPLACE 0x0008U +#define CMD_APPEND 0x0010U +#define CMD_LIST 0x0020U +#define CMD_FLUSH 0x0040U +#define CMD_ZERO 0x0080U +#define CMD_NEW_CHAIN 0x0100U +#define CMD_DELETE_CHAIN 0x0200U +#define CMD_SET_POLICY 0x0400U +#define CMD_RENAME_CHAIN 0x0800U +#define CMD_LIST_RULES 0x1000U +#define CMD_ZERO_NUM 0x2000U +#define CMD_CHECK 0x4000U + +/* + * ARP + */ +extern char *opcodes[]; +#define NUMOPCODES 9 + +#include <linux/netfilter_arp/arp_tables.h> + +static inline struct xt_entry_target *nft_arp_get_target(struct arpt_entry *fw) +{ + struct xt_entry_target **target; + + target = (void *) &fw->elems; + + return *target; +} + +#endif |