73 lines
1.3 KiB
C
73 lines
1.3 KiB
C
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#ifndef _TCP_HELPERS_H
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#define _TCP_HELPERS_H
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#ifdef __cpluscplus
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extern "C"
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{
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#endif
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#include <arpa/inet.h>
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#define __FAVOR_BSD 1
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#include <netinet/tcp.h>
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static inline uint16_t tcp_hdr_get_sport(const struct tcphdr *hdr)
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{
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return ntohs(hdr->source);
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}
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static inline uint16_t tcp_hdr_get_dport(const struct tcphdr *hdr)
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{
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return ntohs(hdr->dest);
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}
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static inline uint32_t tcp_hdr_get_seq(const struct tcphdr *hdr)
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{
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return ntohl(hdr->seq);
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}
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static inline uint32_t tcp_hdr_get_ack(const struct tcphdr *hdr)
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{
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return ntohl(hdr->ack_seq);
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}
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static inline uint8_t tcp_hdr_get_flags(const struct tcphdr *hdr)
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{
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return hdr->th_flags;
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}
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static inline bool tcp_hdr_has_flag_urg(const struct tcphdr *hdr)
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{
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return hdr->th_flags & TH_URG;
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}
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static inline bool tcp_hdr_has_flag_ack(const struct tcphdr *hdr)
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{
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return hdr->th_flags & TH_ACK;
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}
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static inline bool tcp_hdr_has_flag_psh(const struct tcphdr *hdr)
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{
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return hdr->th_flags & TH_PUSH;
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}
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static inline bool tcp_hdr_has_flag_rst(const struct tcphdr *hdr)
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{
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return hdr->th_flags & TH_RST;
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}
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static inline bool tcp_hdr_has_flag_syn(const struct tcphdr *hdr)
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{
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return hdr->th_flags & TH_SYN;
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}
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static inline bool tcp_hdr_has_flag_fin(const struct tcphdr *hdr)
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{
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return hdr->th_flags & TH_FIN;
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}
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#ifdef __cpluscplus
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}
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#endif
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#endif
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