Chrome通过Native Message 扩展程序获取windows MAC地址

Chrome Native Message的原理网上有很多的文章介绍，本片文章就不介绍了。小编研究了一周的时间，终于完成了获取Mac地址的扩展开发。由于网上给出的例子都是跑不通的，分享给大家参考。

1、编写C++代码获取MAC地址

#include
#include
#include
#include
#include
#include
#include
#include
#include
#include


#define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers


static std::string GetMACaddress(void)
{
IP_ADAPTER_INFO AdapterInfo[16]; // Allocate information for up to 16 NICs
DWORD dwBufLen = sizeof(AdapterInfo); // Save the memory size of buffer


DWORD dwStatus = GetAdaptersInfo( // Call GetAdapterInfo
AdapterInfo, // [out] buffer to receive data
&dwBufLen); // [in] size of receive data buffer
assert(dwStatus == ERROR_SUCCESS); // Verify return value is valid, no buffer overflow


PIP_ADAPTER_INFO pAdapterInfo = AdapterInfo;// Contains pointer to current adapter info
std::string outMsg = "";
do {
char acMAC[32];
sprintf(acMAC, "%02X-%02X-%02X-%02X-%02X-%02X",
int (pAdapterInfo->Address[0]),
int (pAdapterInfo->Address[1]),
int (pAdapterInfo->Address[2]),
int (pAdapterInfo->Address[3]),
int (pAdapterInfo->Address[4]),
int (pAdapterInfo->Address[5]));
outMsg.append(acMAC);
outMsg.append(",");
pAdapterInfo = pAdapterInfo->Next; // Progress through linked list
}
while(pAdapterInfo);
if(outMsg.length()>5){
outMsg = outMsg.substr(0,outMsg.length()-1);
}
    return outMsg;
}


int main(int argc, _TCHAR* argv[]){
 std::string outMsg = "{\"text\":\""+GetMACaddress()+"\"}";
 unsigned int outLen = outMsg.length();
 char *bOutLen = reinterpret_cast(&outLen);
 std::cout.write(bOutLen, 4);
 std::cout << outMsg << std::flush;
 return 0;
}

静态编译成.exe  文件

2、编写Chrome Extensions

chrome扩展包含两个部分 host和app。

host调用C++ .exe文件，并在注册表中注册；

app可添加到chrome扩展中，供web页面调用；

2.1首先看host文件内容，host文件夹下文件列表如下图：

其中uninstall_host.bat文件是将C++程序从注册表中删除，install_host是安装c++程序到注册表中，GetMac.exe是编译后的C++程序，

最后的.json文件内容如下：

参数说明请参考： https://developer.chrome.com/extensions/nativeMessaging

{
  "name": "com.google.chrome.fmb.getmac.echo",
  "description": "Chrome Native Messaging API Example Host",
  "path": "GetMac.exe",
  "type": "stdio",
  "allowed_origins": [
    "chrome-extension://knldjmfmopnpolahpmmgbagdohdnhkik/"
  ]
}

2.2 再看app文件内容，app文件夹下文件列表如下图：

main.js和main.html 可以做测试用的，

main.js代码如下：

var port = null;  
    
function appendMessage(text) {  
  document.getElementById('response').innerHTML += "

" + text + "

";  
}  
  
function sendNativeMessage() {  
  message = {"text": document.getElementById('input-text').value};  
  port.postMessage(message);  
  appendMessage("Sent message: " + JSON.stringify(message) + "");  
}  
  
function onNativeMessage(message) {  
  appendMessage("Received message: " + JSON.stringify(message) + "");  
}  
  
function onDisconnected() {  
  appendMessage("Failed to connect: " + chrome.runtime.lastError.message);  
  port = null;  
}  
  
function connect() {  
  var hostName = "com.google.chrome.fmb.getmac.echo";  
  appendMessage("Connecting to native messaging host " + hostName + "")  
  port = chrome.runtime.connectNative(hostName);  
  port.onMessage.addListener(onNativeMessage);  
  port.onDisconnect.addListener(onDisconnected);  
}  
  
document.addEventListener('DOMContentLoaded', function () {  
  document.getElementById('connect-button').addEventListener(  
      'click', connect);  
});  

main.html代码如下：

 
   
     
   
   
    Connect  


   

 
   

background.js里面实现与host的通信，代码如下：

var port = null;
var hostName = "com.google.chrome.xxx.getmac.echo";
var mac = {};
function connect() {
port = chrome.runtime.connectNative(hostName);
port.onMessage.addListener(onNativeMessage);
port.onDisconnect.addListener(onDisconnected);
}


function onNativeMessage(message) {
mac = message; 
chrome.tabs.query({active: true, currentWindow: true}, function(tabs) {
   chrome.tabs.sendMessage(tabs[0].id, mac , function(response) {
       //alert("baground  respone");
   });
});
}


function onDisconnected() {
port = null;
}


chrome.runtime.onMessageExternal.addListener(
  function(request, sender, sendResponse) {
       if(request.requestType =="connect"){
      if(port==null){
          connect();
           }
       }
       else{
      if(port==null){
          connect();
           }
      else{
      if(mac.text!=undefined && mac.text!=null && mac.text!=""){
      sendResponse(mac);
      }   
      }
       }
  });

content.js能够接受background发送的消息，可以实现与应用页面交互将消息传到页面，可以在content中访问页面的dom 。 content.js代码如下：

chrome.runtime.onMessage.addListener(function(request, sender, sendResponse) {
if(request.text != undefined && request.text!=null && request.text!=""){
document.getElementById('mac_address').value = request.text;
}
});

manifest.json配置如下，此配置文件定义扩展程序，具体参数含义参考

https://developer.chrome.com/extensions/nativeMessaging

{
  //Extension ID: knldjmfmopnpolahpmmgbagdohdnhkik
  "key": "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDcBHwzDvyBQ6bDppkIs9MP4ksKqCMyXQ/A52JivHZKh4YO/9vJsT3oaYhSpDCE9RPocOEQvwsHsFReW2nUEc6OLLyoCFFxIb7KkLGsmfakkut/fFdNJYh0xOTbSN8YvLWcqph09XAY2Y/f0AL7vfO1cuCqtkMt8hFrBGWxDdf9CQIDAQAB",
  "name": "Native Messaging Example",
  "version": "1.0",
  "manifest_version": 2,
  "description": "Send a message to a native application.",
  "background" : { "scripts": ["background.js"] },
  "app": {
    "launch": {
      "local_path": "main.html"
    }
  },
  "icons": {
    "128": "icon-128.png"
  },
 "content_scripts": [  
    {  
      "matches": ["http://*/*"],  
      "js": ["content.js"]  
    }  
  ], 
  "externally_connectable": {"matches": ["http://test.fangmaidong.com/fmsj/*","http://localhost/fmsj/*","http://localhost:8080/fmsj/*"]},  
  "permissions": [
    "nativeMessaging","tabs", "http://*/*", "https://*/*"  
  ]
}

2.3应用系统页面代码实例

var editorExtensionId = "knldjmfmopnpolahpmmgbagdohdnhkik";
function sendMessage(type){
chrome.runtime.sendMessage(editorExtensionId, {requestType: type},
 function(response) {
if(response.text!=undefined && response.text!=null && response.text!=""){
document.getElementById('mac_address').value = response.text;
}
});
}
sendMessage('connect');

2.4在chrome扩展设置中添加此扩展程序

3、注意事项

Chrome 的启动参数需要设置 --enable--native-messaging