linux下动态修改ip的CGI程序

 

#include <stdio.h>

#include <stdlib.h> //必要的头文件  

#include<string.h>

#include<unistd.h>

#include<sys/socket.h>

#include<netinet/in.h>

#include<sys/types.h>

#include<sys/stat.h>

#include<fcntl.h>

int main(){

        int len=0;

      char *poststr; char text[100]={'\0'};

      char ip[20],gw[20];

      char cmd[100];

      char abc[100];

struct in_addr s;

int AF_INT;

printf("Content-Type:text/plain\n\n");

     if(getenv("CONTENT-LENGTH"))

     len=atoi(("CONTENT-LENGTH"));

     poststr=getenv("QUERY_STRING"); 

 

 len = sprin