141 lines
4.5 KiB
C
141 lines
4.5 KiB
C
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#ifndef DELIVER_SENDPKT_H
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#define DELIVER_SENDPKT_H
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#ifndef ETHER_ADDR_LEN
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#define ETHER_ADDR_LEN 6
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#endif
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#define ARPHRD_ETHER 1 /* ethernet hardware format */
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#define SENDPACKET_ETH_H 0xe /* Etherner header: 14 bytes */
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#define SENDPACKET_IP_H 0x14 /* IP header: 20 bytes */
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#define SENDPACKET_TCP_H 0x14 /* TCP header: 20 bytes */
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struct mesa_ethernet_hdr
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{
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unsigned char ether_dhost[ETHER_ADDR_LEN]; /* destination ethernet address */
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unsigned char ether_shost[ETHER_ADDR_LEN]; /* source ethernet address */
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unsigned short ether_type; /* packet type ID */
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};
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struct mesa_ip4_hdr
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{
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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u_int8_t ip_hl:4, /* header length */
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ip_v:4; /* version */
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#elif __BYTE_ORDER == __BIG_ENDIAN
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u_int8_t ip_v:4, /* version */
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ip_hl:4; /* header length */
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#else
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#error "Please check <endian.h>"
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#endif
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u_int8_t ip_tos; /* type of service */
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u_int16_t ip_len; /* total length */
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u_int16_t ip_id; /* identification */
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u_int16_t ip_off;
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u_int8_t ip_ttl; /* time to live */
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u_int8_t ip_p; /* protocol */
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u_int16_t ip_sum; /* checksum */
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struct in_addr ip_src, ip_dst; /* source and dest address */
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};
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/*
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* IPv6 packet header prototype, add by LiJia 2012-03-19.
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*/
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struct mesa_ip6_hdr
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{
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u_int8_t ip6_flags[4]; /* version, traffic-class, flow-label */
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u_int16_t ip6_payload_len; /* payload length, not contain header */
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u_int8_t ip6_nxt_hdr; /* next header, same as protocol in IPv4 */
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u_int8_t ip6_hop; /* hop limit, same as TTL in IPv4 */
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struct in6_addr ip6_src; /* source address */
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struct in6_addr ip6_dst; /* dest address */
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};
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#ifndef TH_FIN
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#define TH_FIN 0x01
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#endif
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#ifndef TH_SYN
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#define TH_SYN 0x02
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#endif
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#ifndef TH_RST
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#define TH_RST 0x04
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#endif
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#ifndef TH_PUSH
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#define TH_PUSH 0x08
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#endif
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#ifndef TH_ACK
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#define TH_ACK 0x10
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#endif
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#ifndef TH_URG
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#define TH_URG 0x20
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#endif
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struct mesa_tcp_hdr
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{
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u_int16_t th_sport; /* source port */
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u_int16_t th_dport; /* destination port */
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u_int32_t th_seq; /* sequence number */
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u_int32_t th_ack; /* acknowledgement number */
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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u_int8_t th_x2:4, /* (unused) */
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th_off:4; /* data offset */
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#elif __BYTE_ORDER == __BIG_ENDIAN
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u_int8_t th_off:4, /* data offset */
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th_x2:4; /* (unused) */
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#else
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#error "Please check <endian.h>"
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#endif
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u_int8_t th_flags; /* control flags */
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u_int16_t th_win; /* window */
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u_int16_t th_sum; /* checksum */
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u_int16_t th_urp; /* urgent pointer */
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};
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/*
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* UDP packet header prototype.
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*/
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struct mesa_udp_hdr
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{
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u_int16_t uh_sport; /* soure port */
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u_int16_t uh_dport; /* destination port */
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u_int16_t uh_ulen; /* length */
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u_int16_t uh_sum; /* checksum */
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};
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unsigned int deliver_rand(void);
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unsigned int deliver_rand_range(unsigned int start, unsigned int end);
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int deliver_get_dev_mac(const char *device, unsigned char mac[6]);
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int deliver_mac_pton(const char *str, int delim, char *mac);
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int deliver_do_checksum(unsigned char *buf, int protocol, int len);
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int deliver_build_ethernet(unsigned char *dst, unsigned char *src, unsigned short type,
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const unsigned char *payload, int payload_s, unsigned char *buf);
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int deliver_build_ethhdr(unsigned char *dst, unsigned char *src, unsigned short type,unsigned char *buf);
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int deliver_build_ipv6(unsigned char traffic_class, unsigned int flow_lable,
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unsigned short len, unsigned char next_header, unsigned char hop,
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const struct in6_addr *src, const struct in6_addr *dst,
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const char *payload, int payload_s, unsigned char *buf);
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int deliver_build_ipv4(unsigned short carry_layer_len, unsigned char tos, unsigned short id,
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unsigned short frag, unsigned char ttl, unsigned char prot, unsigned int src, unsigned int dst,
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const char *payload,int payload_s, unsigned char *buf);
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int deliver_build_tcp(unsigned short sp, unsigned short dp, unsigned int seq, unsigned int ack,
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unsigned char th_flags, unsigned short win, unsigned short urg,
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const char *payload, int payload_s, unsigned char *buf);
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#endif
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