ICQ弱点检测代码

开发平台：

Visual C++

gethost.c：源码内容

							#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <netdb.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
int main(int argc,char **argv)
{
	struct hostent *host;
	int i=0;
	int fd;
	char buf[256];
	if(argc<2)
	{
		printf("Usage:%s host_namen",argv[0]);
		return 1;
	}
	host = gethostbyname(argv[1]);
	if(host == NULL)
	{
		printf("gethostbyname error:%sn", hstrerror(h_errno));
	}
	else
	{
		printf( "h_name:%sn",host->h_name );
		printf( "h_length:%dn",host->h_length );
		printf( "h_addrtype:%dn",host->h_addrtype);
		for(i=0; host->h_aliases[i]!=NULL;i++)
		{
			printf("h_alias%d:%sn",i+1,host->h_aliases[i]);
		}
		for(i=0;host->h_addr_list[i]!=NULL;i++)
		{
			printf("ip%d:%sn",i+1,inet_ntoa(*(struct in_addr *)host->h_addr_list[i]));
		}
	}
	struct in_addr addr;
	inet_aton("202.117.112.3",&addr);
	host = gethostbyaddr((char *)&addr,4,AF_INET);
	if(host!=NULL){
		printf("h_name:%sn",host->h_name);
	}
	else
		printf("gethostbyname error:%sn",hstrerror(h_errno));
	return 0;
}

						