关机助手设计说明
缘起
本人由于胃不太好,从17年11月份离职一直在家里养病.由于父母在家里养了些猪.所以有时,可能自己在房间用电脑做点东西.忽然要去猪圈里干话.一忙就是一上午或者一下午,结果忘记关电脑了.不是心疼电的问题,而是家里猪圈由于多年了,一些电路或者插线板老化了,就要停电去重新接.这样造成了忽然断电.对电脑硬盘损伤很大(已经报废了一个老硬盘了).本是自己安装一个teamviewer可以搞定的事,但是不知道为什么最近都是登录不进去(还有就是父母也不太会用).所以就想写一个通过手机可以控制电脑开关机的工具.还有一个问题,有时候孩子要在电脑看动画片或者他喜欢看的视频,本来是陪这他一起看,但是临时有事,出去了做事(如母猪产崽).结果时间长了孩子就过来找我.结果电脑就忘记关了.所以就更加迫使想做一个在手机上可以开关家里电脑的工具.可以在我自己我家人的手机上都安装一个.这样就可以不用在回到房间去关电脑了.只要拿出手机打开app几秒中就可以关闭家里的电脑省事.
设计分析
由于在局域网中手机是不知道每台电脑的IP,所以我们就用UDP广播的方式来确定每台开机的电脑的IP和MAC地址(要mac地址的目的就是为了开机用的)
然后说干就干C++写个WIN的简单UDP服务 核心代码如下:
DWORD UDPService::DoTask()
{
sockSrv = socket( AF_INET , SOCK_DGRAM , 0 ) ;
addrSrv.sin_addr.S_un.S_addr = htonl(INADDR_ANY) ;
addrSrv.sin_family = AF_INET ;
addrSrv.sin_port = htons(Get_GSet()->GetUdpPort()) ;
bind(sockSrv , (SOCKADDR*)&addrSrv , sizeof(SOCKADDR));
DWORD dwWaitRet = 3;
while ( 1 )
{
dwWaitRet = WaitForMultipleObjects(3, h_Events, FALSE, 100);
if (dwWaitRet == WAIT_OBJECT_0 + 1) break;
DoDispatcher();
}
closesocket( sockSrv );
bIsRun = false;
return 0;
}
void UDPService::DoDispatcher()
{
string strCmd;
do
{
if(!GetRecvData(strCmd)) break;
if(!Dispatcher(strCmd)) break;
} while (0);
}
bool UDPService::GetRecvData(string &strCmd)
{
int len = sizeof(SOCKADDR);
int recvSize = sizeof(recvBuf);
ZeroMemory(recvBuf, recvSize);
recvfrom(sockSrv,recvBuf, recvSize,0,(SOCKADDR*)&addrClient, &len);
strFromIP = inet_ntoa(addrClient.sin_addr);
strCmd = recvBuf;
LOG_INFO(L"recvfrom[%s]: %s\n", C2W(strFromIP).c_str(), C2W(strCmd).c_str());
if(!GetCmdStrs(strCmd))
{
LOG_ERR(L"获取命令错误!");
return false;
}
ZeroMemory(recvBuf, recvSize);
strcpy(recvBuf, strCmd.c_str());
return strCmd.length() > 2;
}
int UDPService::SendData(const string &sendDataStr)
{
if (sendDataStr.length() GetCNameA(),
Get_GSet()->GetURLA(),
Get_GSet()->GetLOpenPort(),
Get_GSet()->GetOpenPort(),
Get_GSet()->GetClosePort()
);
}
else
{
sprintf_s(cmdBuffer,nBuffSize, "GetMacByIps Fial");
OpenSuccess = false;
}
}else if(nAt != string::npos)
{
//<shutdown:sToIp <reboot:sToIp
do
{
string strCuuMac = strCmd.substr(nAt+1);
string strCmd1 = strCmd.substr(0, nAt);
ZeroMemory(cmdBuffer, nBuffSize);
strcpy(cmdBuffer, strCmd1.c_str());
LOG_INFO(C2W(cmdBuffer).c_str());
if(!IpMgr.IsCuuPcByMac(strCuuMac))
{
bNeedSend = false;
sprintf_s(cmdBuffer, sizeof(cmdBuffer), "IpMgr.IsCuuPcByMac(%s) == false ", strCuuMac.c_str());
break;
}
if(stricmp(cmdBuffer, "shutdown") == 0)
{
if(SystemShutdown())
{
strcpy(cmdBuffer, "shutdown windows success");
}else{
sprintf_s(cmdBuffer, sizeof(cmdBuffer), "shutdown windows failed! ,error code is: %d", GetLastError());
OpenSuccess = false;
}
}else if(stricmp(cmdBuffer, "reboot") == 0)
{
if(SystemShutdown(true))
{
strcpy(cmdBuffer, "reboot windows success");
}else{
sprintf_s(cmdBuffer, sizeof(cmdBuffer), "reboot windows failed! ,error code is: %d", GetLastError());
OpenSuccess = false;
}
}
} while (0);
}else {
sprintf_s(cmdBuffer, nBuffSize, "unkonw command [%s]", cmdBuffer);
OpenSuccess = false;
}
string strData = cmdBuffer;
if (OpenSuccess) LOG_INFO(C2W(strData).c_str());
else LOG_ERR(C2W(strData).c_str());
if(!bNeedSend) strData = "";
return SendData(strData);
}手机端的核心代码如下:
package vip.caipiao365.CloseAssistant;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import org.json.JSONObject;
import java.net.DatagramPacket;
import java.net.InetAddress;
import java.net.MulticastSocket;
import java.net.SocketTimeoutException;
public class udpBroadCast extends Thread {
static public Handler uiHandler;
MulticastSocket sendSocket = null;
DatagramPacket dj = null;
InetAddress group = null;
// 确定要发送的消息：
String mes = "";
// 确定发送方的IP地址及端口号，地址为本地机器地址
int port = 8910;
String host = "255.255.255.255";// 广播地址
int mType = 0; // 0获取信息 // 1 关机 2 重启 3开机
String sMac = "";
// 接受反馈数据的缓冲存储器
byte[] getBuf;
// 接受类型的数据报
DatagramPacket getPacket;
public udpBroadCast(int nType, String _sToIp, String _sMac, int _port) {
mType = nType;
host = _sToIp;
port = _port;
sMac = _sMac;
// 确定接受反馈数据的缓冲存储器，即存储数据的字节数组
getBuf = new byte[2048];
// 创建接受类型的数据报
getPacket = new DatagramPacket(getBuf, getBuf.length);
GetCmd();
}
protected HistoryItem JS2HistoryItem(JSONObject jsObj) {
HistoryItem _item = new HistoryItem();
_item.id = 0;
try {
_item.ip = jsObj.getString("I");
_item.mac = jsObj.getString("M");
_item.title = jsObj.getString("N");
_item.cname = jsObj.getString("D");
_item.url = jsObj.getString("U");
_item.oport = jsObj.getInt("O");
_item.port = jsObj.getInt("LO");
_item.cport = jsObj.getInt("C");
} catch (Exception e) {
e.printStackTrace();
_item = null;
}
return _item;
}
private HistoryItem parseJSONData(String jsonData) {
HistoryItem _item = null;
try {
JSONObject jsonObject = new JSONObject(jsonData);
_item = JS2HistoryItem(jsonObject);
} catch (Exception e) {
e.printStackTrace();
_item = null;
}
return _item;
}
protected String GetData() {
String strJson = "";
try {
// 通过套接字接受数据
sendSocket.receive(getPacket);
// 解析反馈的消息，并打印
strJson = new String(getBuf, 0, getPacket.getLength());
} catch (SocketTimeoutException e) {
strJson = "";
} catch (Exception e) {
e.printStackTrace();
strJson = "";
}
return strJson;
}
protected void GetCmd() {
switch (mType) {
// 0获取信息 // 1 关机 2 重启 3开机
case 0:
mes = "";
MainActivity.mainAct.histHandler.ReSetComputStatus();
break;
case 1:
mes = " 0) {
ncount--;
strJson = GetData();
if (strJson.length() < 2) {
sleep(50);
continue;
}
HistoryItem _item = null;
if (mType == 0) {
_item = parseJSONData(strJson);
if (_item != null) {
_item.starred = true;
Message msg = new Message();
msg.what = 1;
msg.obj = _item;
uiHandler.sendMessage(msg);
nCount++;
}
} else if (mType != 0) {
Message msg = new Message();
msg.what = 6;
msg.obj = strJson;
uiHandler.sendMessage(msg);
}
}
//sendSocket.leaveGroup(group);
sendSocket.close();
} catch (SocketTimeoutException e) {
} catch (Exception e) {
e.printStackTrace();
}
Message msg1 = new Message();
msg1.what = 4;
msg1.arg1 = nCount;
uiHandler.sendMessage(msg1);
}
}本来设计的是从UDP获取的IP地址,然后在用TCP去连接发送关机重启指令,但是在我调试程序时候,有时候会报错误 No route to host.
想想UDP可以扫描有应答的报文,TCP链接有时候却抛这个异常.反正是局域网,而且数据量也不大就干脆用UDP广播得了.里面加上MAC地址,要是那台MAC地址配对上了就执行指令.
android端下载: https://gitee.com/zuzong/Projects/raw/master/CloseAssistant/android/CloseAssistant.apk
电脑端下载: https://gitee.com/zuzong/Projects/raw/master/CloseAssistant/PC/CloseAssistant.exe
注 要是哪位知道如何解决 No route to host.这个异常麻烦请指教