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【C】手机关电脑

作者:YangYuDong / 发布于2013/4/16/ 843

通过Android手机去关闭电脑，适用windows系统。之前发了一个电脑端用java写的，在网上自学后用C语言写了这个电脑服务器端。注意，这个app对应这个客户端，之前发的不能通用。在学习的过程中发现，关于C语言与java通过socket通信这方面比较少入门级的简单易懂的例子，在C的cpp里面写了一下一些学到的东西，不足之处望指导。java实现socket比较简单，就不写了。


	#include <stdio.h>
	#include <winsock.h> //windows下使用socket的头文件
	#include <string.h>
	#pragma comment (lib,"wsock32.lib") //告诉编译器先去wsock32.lib库里面找
	void main()
	{
	char password[20]; //密码
	int port; //端口
	printf(" Controling By Your Phone\n\n");
	printf(" Power By Yudong\n\n\n");
	printf("Plase Enter the Port :(Default : 17958. You'd better use this!)\n\n");
	scanf("%d",&port);
	printf("Please Enter the Password :(Default : 123. You'd better use the numbers no more than 999999!\n\n");
	scanf("%s",&password);
	WSADATA data; //这两句初始化，说明要使用的版本，是一个结构体，具体百度一下
	WSAStartup(MAKEWORD(2,0),&data);
	SOCKET socket1; //服务器端监听
	SOCKET socket2; //用来获取accept来的客户端socket
	struct sockaddr_in local;
	struct sockaddr_in from;
	int fromlen =sizeof(from);
	local.sin_family=AF_INET;
	local.sin_port=htons(port);
	local.sin_addr.s_addr=INADDR_ANY;
	socket1=socket(AF_INET,SOCK_STREAM,0); //SOCK_STREAM，表示TCP通信，我试过用UDP通信，失败
	bind(socket1,(struct sockaddr*)&local,sizeof local); //绑定socket
	while (1)
	{
	 printf("Waiting...\n");
	 listen(socket1,0); //监听
	 socket2=accept(socket1,NULL,NULL); //连接
	 printf("Connected...\n");
	 char buffer[1024]="\0";
	 recv(socket2,buffer,sizeof(buffer),0); //收数据，注意，这里的收发数据的方式都是错误的，你可以在接受端里面调试看看，接收到的数据是不正确的
	 printf("Checking Password...\n"); //java和C之间通信存在大端小端的问题
	 if(strcmp(buffer,password)==0) //网上有正确的通过大端小端转换的正确方式
	 {
	 char str[] = " ";
	 send(socket2,str,sizeof(buffer),0); //发数据
	 printf("Password Pass...\n");
	 printf("Closing windows...\n");
	 system("shutdown -s -t 10"); //关机命令
	 }
	 else
	 {
	 char str2[] = "a";
	 send(socket2,str2,sizeof(buffer),0);
	 printf("Wrong Password...\n");
	 }
	
	}
	closesocket(socket1); //关闭
	closesocket(socket2);
	WSACleanup();
	}

	

	server.cpp

	

	#include <stdio.h>
	#include <winsock.h> //windows?????socket??????
	#include <string.h>
	#pragma comment (lib,"wsock32.lib") //????????????wsock32.lib????????
	void main()
	{
	char password[20]; //????
	int port; //???
	printf(" Controling By Your Phone\n\n");
	printf(" Power By Yudong\n\n\n");
	printf("Plase Enter the Port :(Default : 17958. You'd better use this!)\n\n");
	scanf("%d",&port);
	printf("Please Enter the Password :(Default : 123. You'd better use the numbers no more than 999999!\n\n");
	scanf("%s",&password);
	WSADATA data; //??????????????????&otilde;?汾??????????壬?????????
	WSAStartup(MAKEWORD(2,0),&data);
	SOCKET socket1; //???????????
	SOCKET socket2; //???????accept????????socket
	struct sockaddr_in local;
	struct sockaddr_in from;
	int fromlen =sizeof(from);
	local.sin_family=AF_INET;
	local.sin_port=htons(port);
	local.sin_addr.s_addr=INADDR_ANY;
	socket1=socket(AF_INET,SOCK_STREAM,0); //SOCK_STREAM?????TCP???????????UDP???????
	bind(socket1,(struct sockaddr*)&local,sizeof local); //??socket
	while (1)
	{
	 printf("Waiting...\n");
	 listen(socket1,0); //????
	 socket2=accept(socket1,NULL,NULL); //????
	 printf("Connected...\n");
	 char buffer[1024]="\0";
	 recv(socket2,buffer,sizeof(buffer),0); //???????????????????????????????
	 printf("Checking Password...\n"); //java??C???????????С???????
	 if(strcmp(buffer,password)==0) //????????????????С?????????????
	 {
	 char str[] = " ";
	 send(socket2,str,sizeof(buffer),0); //?????
	 printf("Password Pass...\n");
	 printf("Closing windows...\n");
	 system("shutdown -s -t 10"); //???????
	 }
	 else
	 {
	 char str2[] = "a";
	 send(socket2,str2,sizeof(buffer),0);
	 printf("Wrong Password...\n");
	 }
	
	}
	closesocket(socket1); //???
	closesocket(socket2);
	WSACleanup();
	}

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