diff options
Diffstat (limited to 'common/include/decode_tcp.h')
| -rw-r--r-- | common/include/decode_tcp.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/common/include/decode_tcp.h b/common/include/decode_tcp.h new file mode 100644 index 0000000..27cc14b --- /dev/null +++ b/common/include/decode_tcp.h @@ -0,0 +1,46 @@ +#ifndef _DECODE_TCP_H +#define _DECODE_TCP_H + +#ifdef __cpluscplus +extern "C" +{ +#endif + +#include "public.h" + +#define TCP_HEADER_LEN 20 + + typedef struct tcp_header_s + { + uint16_t th_sport; /**< source port */ + uint16_t th_dport; /**< destination port */ + uint32_t th_seq; /**< sequence number */ + uint32_t th_ack; /**< acknowledgement number */ + uint8_t th_offx2; /**< offset and reserved */ + uint8_t th_flags; /**< pkt flags */ + uint16_t th_win; /**< pkt window */ + uint16_t th_sum; /**< checksum */ + uint16_t th_urp; /**< urgent pointer */ + } __attribute__((__packed__)) tcp_header_t; + + typedef struct tcp_info_s + { + uint16_t src_port; + uint16_t dst_port; + + tcp_header_t *hdr; + uint8_t *payload; + + uint32_t opt_len; + uint32_t hdr_len; + uint32_t payload_len; + } tcp_info_t; + + int decode_tcp(tcp_info_t *packet, const uint8_t *data, uint32_t len); + void dump_tcp_info(uint32_t pkt_id, tcp_info_t *packet); + +#ifdef __cpluscplus +} +#endif + +#endif
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