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PF_PACKETЭÒé×åÊÇÓëϵͳTCP/IPЭÒéÕ»²¢ÐеÄͬ¼¶±ðÄ£¿é£¬¼´´ÓPF_PACKETЭÒé×åµÃµ½µÄÊý¾Ý°üÊÇûÓо­¹ýϵͳTCP/IPЭÒéÕ»´¦Àí
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#include<errno.h>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<sys/socket.h>
#include<fcntl.h>
#include<netpacket/packet.h>
#include<net/if.h>
#include<net/if_arp.h>
#include<netinet/in.h>
#include<netinet/ip.h>
#include<linux/if_ether.h>
#include<arpa/inet.h>
#include<sys/ioctl.h>
#include<unistd.h>
#define RED      "\E[31m\E[1m"
#define GREEN    "\E[32m\E[1m"
#define YELLOW   "\E[33m\E[1m"
#define BLUE     "\E[34m\E[1m"
#define NORMAL   "\E[m"
int Get_IfaceIndex(int fd, const char* interfaceName)
{
struct ifreq ifr;
if (interfaceName == NULL)
{
   return -1;
}
memset(&ifr, 0, sizeof(ifr));
strcpy(ifr.ifr_name, interfaceName);
if (ioctl(fd, SIOCGIFINDEX, &ifr) == -1)
{
   printf("RED ioctl error\n");
   return -1;
}
return ifr.ifr_ifindex;
}
int set_Iface_promisc(int fd, int dev_id)
{
struct packet_mreq mr;
memset(&mr,0,sizeof(mr));
mr.mr_ifindex = dev_id;
mr.mr_type = PACKET_MR_PROMISC;
if(setsockopt(fd, SOL_PACKET, PACKET_ADD_MEMBERSHIP,&mr,sizeof(mr))==-1)
{
   fprintf(stderr,"GREEN set promisc failed! \n");
   return -1;
}
return 0;
}
void usage(char *exename)
{
fprintf(stderr,RED"%s <interface> <packets num to capture>\n"NORMAL, exename);
}
int main(int argc, char **argv)
{
int listen_fd;
int ipak=0,maxk=0;
char buffer
[8192];
int frmlen;
struct sock


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