www.pudn.com > checkUnusedIP.rar > IpFree.cpp

#include  
#include  
#include  
 
#include "pcap.h" 
#pragma comment (lib,"ws2_32") 
#pragma comment (lib,"wpcap") 
 
int main(int argc, char **argv) 
{ 
	 
 
	pcap_t * adhandle = NULL; 
	char errbuf[PCAP_ERRBUF_SIZE]; 
 
	pcap_if_t * alldevs; 
	pcap_if_t * d; 
	int i=0; 
	int inum; 
	//char errbuf[PCAP_ERRBUF_SIZE]; 
 
	if (pcap_findalldevs(&alldevs,errbuf) == -1) 
	{ 
		fprintf(stderr,"Error in pcap_findalldevs: %s\n",errbuf); 
		exit(1); 
	} 
	for (d=alldevs;d;d=d->next) 
	{ 
		printf("%d.%s",++i,d->name); 
		if (d->description) 
		{ 
			printf("\n(%s)\n",d->description); 
		} 
		else  
		{ 
		    printf("no\n"); 
		} 
		//printf("\n %d\n",d->flags); 
	} 
 
	if (i == 0) 
	{ 
		printf("no devices"); 
		return (-1); 
	} 
 
	//printf("Enter the interface number (1-%d):",i); 
	//scanf("%d", &inum); 
	inum=2; 
	if(inum < 1 || inum > i) 
	{ 
		printf("\nInterface number out of range.\n"); 
		/* Free the device list */ 
		pcap_freealldevs(alldevs); 
		return -1; 
	} 
 
	for (d=alldevs,i=0;inext,i++); 
 
		printf("\n%s\n",d->name); 
	if ((adhandle = pcap_open_live(d->name, 
							65535, 
							1, 
							1000, 
							errbuf 
							)) == NULL) 
 
	{	 
		pcap_freealldevs(alldevs); 
		return -1; 
	} 
 
 
 
/* 
ffffffffffff 
00-0B-74-17-5C-D7  //我得mac地址 
0806 
0001 
0800 
06 
04 
0001 
ffffffffffff		//源mac 
c0a80001             //源IP地址 
000000000000		//目的mac 
c0a8039b			//目的IP地址 
c027dae85010ff9b57710000202020202020  //随机 
*/ 
u_char packet[]= 
 
"\xff\xff\xff\xff\xff\xff" 
"\x00\x0B\x74\x17\x5C\xD7"  //我得mac地址 
"\x08\x06" 
"\x00\x01" 
"\x08\x00" 
"\x06" 
"\x04" 
"\x00\x01" 
"\xff\xff\xff\xff\xff\xff"		//源mac 
"\xc0\xa8\x00\x02"             //源IP地址 
"\x00\x00\x00\x00\x00\x00"		//目的mac 
"\xc0\xa8\x03\x9b"			//目的IP地址 
"\xc0\x27\xda\xe8\x50\x10\xff\x9b\x57\x71\x00\x00\x20\x20\x20\x20\x20\x20"  //随机 
; 
  
  
 
    /* Send down the packet */ 
    if (pcap_sendpacket(adhandle, packet, 60 /* size */) != 0) 
    { 
        fprintf(stderr,"\nError sending the packet: \n", pcap_geterr(adhandle)); 
        return -1; 
    } 
 
 
	pcap_freealldevs(alldevs); 
 
 
    return 1; 
}