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74 lines
2.1 KiB
74 lines
2.1 KiB
#ifndef _NETFILTER_API_H
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#define _NETFILTER_API_H
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#include <glib.h>
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#include <stdint.h>
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#include <stdbool.h>
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typedef struct nfapi_socket nfapi_socket;
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typedef struct nfapi_buf nfapi_buf;
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typedef struct {
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const char *(*rule)(const int8_t *, size_t, void *userdata);
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const char *(*chain)(const int8_t *, size_t, void *userdata);
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const char *(*expression)(const char *, const int8_t *, size_t, void *userdata);
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void (*handle)(int64_t, void *userdata);
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void (*comment)(const char *, void *userdata);
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} nfapi_callbacks;
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nfapi_socket *nfapi_socket_open(void);
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void nfapi_socket_close(nfapi_socket *);
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nfapi_buf *nfapi_buf_new(void);
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void nfapi_buf_free(nfapi_buf *);
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void nfapi_add_msg(nfapi_buf *, uint16_t type, uint16_t family, uint16_t flags);
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void nfapi_add_attr(nfapi_buf *b, uint16_t type, const void *data, size_t len);
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static inline void nfapi_add_str_attr(nfapi_buf *b, uint16_t type, const char *s) {
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nfapi_add_attr(b, type, s, strlen(s) + 1);
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}
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static inline void nfapi_add_u32_attr(nfapi_buf *b, uint16_t type, uint32_t u) {
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nfapi_add_attr(b, type, &u, sizeof(u));
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}
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static inline void nfapi_add_u64_attr(nfapi_buf *b, uint16_t type, uint64_t u) {
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nfapi_add_attr(b, type, &u, sizeof(u));
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}
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#define nfapi_add_binary_str_attr(b, type, s) \
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nfapi_add_attr(b, type, &(struct { \
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uint16_t len; \
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char buf[sizeof(s)]; \
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}) { \
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.len = htons(sizeof(s)), \
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.buf = s, \
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}, 2 + sizeof(s))
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void nfapi_nested_begin(nfapi_buf *, uint16_t type);
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void nfapi_nested_end(nfapi_buf *);
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void nfapi_batch_begin(nfapi_buf *);
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void nfapi_batch_end(nfapi_buf *);
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bool nfapi_send_buf(nfapi_socket *, nfapi_buf *);
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const char *nfapi_recv_iter(nfapi_socket *, const nfapi_callbacks *, void *userdata);
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const char *nfapi_rule_iter(const int8_t *, size_t, const nfapi_callbacks *, void *userdata);
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const char *nfapi_get_immediate_chain(const int8_t *, size_t);
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const char *nfapi_get_target(const int8_t *, size_t, void *info, size_t *info_len);
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(nfapi_socket, nfapi_socket_close);
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(nfapi_buf, nfapi_buf_free);
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#endif
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