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118 lines
2.0 KiB
C
118 lines
2.0 KiB
C
/*
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* network.h
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*
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* Created on: Jul 29, 2017
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* Author: wangyu
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*/
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#ifndef NETWORK_H_
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#define NETWORK_H_
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extern int raw_recv_fd;
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extern int raw_send_fd;
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extern int seq_mode;
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extern int filter_port;
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extern uint32_t bind_address_uint32;
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extern int disable_bpf_filter;
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struct icmphdr
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{
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uint8_t type;
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uint8_t code;
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uint16_t check_sum;
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uint16_t id;
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uint16_t seq;
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};
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struct pseudo_header {
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u_int32_t source_address;
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u_int32_t dest_address;
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u_int8_t placeholder;
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u_int8_t protocol;
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u_int16_t tcp_length;
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};
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struct packet_info_t
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{
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uint8_t protocol;
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//ip_part:
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uint32_t src_ip;
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uint16_t src_port;
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uint32_t dst_ip;
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uint16_t dst_port;
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//tcp_part:
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bool syn,ack,psh,rst;
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uint32_t seq,ack_seq;
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uint32_t ts,ts_ack;
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uint16_t icmp_seq;
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bool has_ts;
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packet_info_t()
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{
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if(raw_mode==mode_faketcp)
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{
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protocol=IPPROTO_TCP;
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}
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else if(raw_mode==mode_udp)
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{
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protocol=IPPROTO_UDP;
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}
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else if(raw_mode==mode_icmp)
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{
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protocol=IPPROTO_ICMP;
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}
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}
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};
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struct raw_info_t
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{
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// int peek;
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packet_info_t send_info;
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packet_info_t recv_info;
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raw_info_t()
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{
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// peek=0;
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}
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};//g_raw_info;
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int init_raw_socket();
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void init_filter(int port);
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void remove_filter();
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int send_raw_ip(raw_info_t &raw_info,const char * payload,int payloadlen);
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int peek_raw(uint32_t &ip,uint16_t &port);
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int recv_raw_ip(raw_info_t &raw_info,char * &payload,int &payloadlen);
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int send_raw_icmp(raw_info_t &raw_info, const char * payload, int payloadlen);
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int send_raw_udp(raw_info_t &raw_info, const char * payload, int payloadlen);
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int send_raw_tcp(raw_info_t &raw_info,const char * payload, int payloadlen);
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int recv_raw_icmp(raw_info_t &raw_info, char *&payload, int &payloadlen);
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int recv_raw_udp(raw_info_t &raw_info, char *&payload, int &payloadlen);
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int recv_raw_tcp(raw_info_t &raw_info,char * &payload,int &payloadlen);
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int send_raw(raw_info_t &raw_info,const char * payload,int payloadlen);
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int recv_raw(raw_info_t &raw_info,char * &payload,int &payloadlen);
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#endif /* NETWORK_H_ */
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