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wangyu
2017-07-29 20:32:26 +08:00
committed by wangyu
parent e32a65d5e9
commit 701eb8dbcf
9 changed files with 1707 additions and 1723 deletions
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117
network.h Normal file
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/*
* network.h
*
* Created on: Jul 29, 2017
* Author: wangyu
*/
#ifndef NETWORK_H_
#define NETWORK_H_
extern int raw_recv_fd;
extern int raw_send_fd;
extern int seq_mode;
extern int filter_port;
extern uint32_t bind_address_uint32;
extern int disable_bpf_filter;
struct icmphdr
{
uint8_t type;
uint8_t code;
uint16_t check_sum;
uint16_t id;
uint16_t seq;
};
struct pseudo_header {
u_int32_t source_address;
u_int32_t dest_address;
u_int8_t placeholder;
u_int8_t protocol;
u_int16_t tcp_length;
};
struct packet_info_t
{
uint8_t protocol;
//ip_part:
uint32_t src_ip;
uint16_t src_port;
uint32_t dst_ip;
uint16_t dst_port;
//tcp_part:
bool syn,ack,psh,rst;
uint32_t seq,ack_seq;
uint32_t ts,ts_ack;
uint16_t icmp_seq;
bool has_ts;
packet_info_t()
{
if(raw_mode==mode_faketcp)
{
protocol=IPPROTO_TCP;
}
else if(raw_mode==mode_udp)
{
protocol=IPPROTO_UDP;
}
else if(raw_mode==mode_icmp)
{
protocol=IPPROTO_ICMP;
}
}
};
struct raw_info_t
{
// int peek;
packet_info_t send_info;
packet_info_t recv_info;
raw_info_t()
{
// peek=0;
}
};//g_raw_info;
int init_raw_socket();
void init_filter(int port);
void remove_filter();
int send_raw_ip(raw_info_t &raw_info,const char * payload,int payloadlen);
int peek_raw(uint32_t &ip,uint16_t &port);
int recv_raw_ip(raw_info_t &raw_info,char * &payload,int &payloadlen);
int send_raw_icmp(raw_info_t &raw_info, const char * payload, int payloadlen);
int send_raw_udp(raw_info_t &raw_info, const char * payload, int payloadlen);
int send_raw_tcp(raw_info_t &raw_info,const char * payload, int payloadlen);
int recv_raw_icmp(raw_info_t &raw_info, char *&payload, int &payloadlen);
int recv_raw_udp(raw_info_t &raw_info, char *&payload, int &payloadlen);
int recv_raw_tcp(raw_info_t &raw_info,char * &payload,int &payloadlen);
int send_raw(raw_info_t &raw_info,const char * payload,int payloadlen);
int recv_raw(raw_info_t &raw_info,char * &payload,int &payloadlen);
#endif /* NETWORK_H_ */