界面和程序如何连接 - QTCN开发网

只看楼主倒序阅读楼主发表于: 2010-12-16

关键词：界面

用qt designer 画了如上的界面
用C 写了个简单的端口扫描器，两者如何联系起来？
#include<stdio.h>
#include<unistd.h>
#include<sys/socket.h>
#include<string.h>
#include<netdb.h>
#include<netinet/in.h>
#include<arpa/inet.h>
void print_usage(char* str)
{
printf("%s start IP\n");
printf("%s end IP\n");
printf("%s start port\n");
printf("%s end port\n");
}
int main(int argc,char** argv)
{
       struct sockaddr_in server;
struct servent   * service;
int ret;
int port;
int sockfd;
int startport;
int endport;
unsigned int ip;
    unsigned int sip;
unsigned int eip;


    if ((2>argc)|| (argc >5))
{
  print_usage(argv[0]);
  exit(1);
}
   if (5==argc)
       {
              sip=ntohl(inet_addr(argv[1]));
  eip=ntohl(inet_addr(argv[2]));
  startport = atoi(argv[3]);
  endport=atoi(argv[4]);
       }
   for(ip=sip;ip<=eip;ip++)
   {
for(port=startport;port<=endport;port++)
{
      if (-1==(sockfd=socket(AF_INET,SOCK_STREAM,0)))
   {
  perror("can not create socket\n");
  exit(1);
    }
    memset(&server,0,sizeof(struct sockaddr_in));
    server.sin_family = AF_INET;
    server.sin_addr.s_addr = htonl(ip);
         server.sin_port = htons(port);
    if (0>(ret=connect(sockfd,(struct sockaddr*)&server,sizeof(struct sockaddr))))
    {
    close(sockfd);
    continue;
    }
    else
    {
     service=getservbyport(htons(port),"tcp");
     if(service!=NULL)
     {
      printf("%s   ",service->s_name);
      printf("%d   ",port);
                  printf("%s   ",service->s_proto);
      printf("\n");
     }
     else
     {
                   printf("%d is working,but the name is unkown\n",port);
     }

    }
   close(sockfd);
}
       printf("IP is %s\n",inet_ntoa(server.sin_addr));
   }
   return 0;
}