与本机消息传递主机通信时出错（chrome 令牌签名）

Posted 2023-02-22

【中文标题】与本机消息传递主机通信时出错（chrome 令牌签名）

【英文标题】：Error when communicating with the native messaging host (chrome token signing)

【发布时间】：2017-05-24 10:42:20

【问题描述】：

我从 github 安装了 chrome 令牌签名，在构建本机消息传递并在 Google chrome 中加载扩展后，它返回一个窗口 cmd，当我退出或放置任何字符串时出现错误 与本机消息传递主机通信时出错

【问题讨论】：

你能显示你的代码和错误日志吗？

@Mr.Rebot 日志错误后台页面已激活 TEST: ERROR "message":"与本机消息传递主机通信时出错。"

【参考方案1】：

background.js

 * Chrome token signing extension
  *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301     USA
*/

var NO_NATIVE_URL = "https://open-eid.github.io/chrome-token-signing/missing.html";
var HELLO_URL = "https://open-eid.github.io/chrome-token-signing/hello.html";
var DEVELOPER_URL = "https://github.com/open-eid/chrome-token-signing/wiki/DeveloperTips";

  var NATIVE_HOST = "ee.ria.esteid";
  var K_SRC = "src";
  var K_ORIGIN = "origin";
  var K_NONCE = "nonce";
  var K_RESULT = "result";
  var K_TAB = "tab";
  var K_EXTENSION = "extension";
  // Stores the longrunning ports per tab
  // Used to route all request from a tab to the same host instance
 var ports = ;
  // Probed to false if host component is OK.
  var missing = true;
  console.log("Background page activated");
  // XXX: probe test, because connectNative() does not allow to check the   presence
   // of native component for some reason
  typeof chrome.runtime.onStartup !== 'undefined' &&     chrome.runtime.onStartup.addListener(function() 
  // Also probed for in onInstalled()
  _testNativeComponent().then(function(result) 
    if (result === "ok") 
        missing = false;
     );
        );

  // Force kill of native process
  // Becasue Port.disconnect() does not work
  function _killPort(tab) 
if (tab in ports) 
    console.log("KILL " + tab);
    // Force killing with an empty message
    ports[tab].postMessage();

 

  // Check if native implementation is OK resolves with "ok", "missing"   or "forbidden"
  function _testNativeComponent() 
return new Promise(function(resolve, reject) 
    chrome.runtime.sendNativeMessage(NATIVE_HOST, text: "some_valid_argument", function(response) 
   if (!response) 
            console.log("TEST: ERROR  " + JSON.stringify(chrome.runtime.lastError));
            // Try to be smart and do some string matching
            var permissions = "Access to the specified native messaging host is forbidden.";
            var missing = "Specified native messaging host not found.";
            if (chrome.runtime.lastError.message === permissions) 
                resolve("forbidden")
             else if (chrome.runtime.lastError.message === missing) 
                resolve("missing");
             else 
                resolve("missing");
            
         else 
            console.log("TEST: " + JSON.stringify(response));
            if (response["result"] === "invalid_argument") 
                resolve("ok");
             else 
                resolve("missing"); // TODO: something better here
            
        
    );
);
  


 // When extension is installed, check for native component or direct to helping page
 typeof chrome.runtime.onInstalled !== 'undefined' && chrome.runtime.onInstalled.addListener(function(details) 
if (details.reason === "install" || details.reason === "update") 
    _testNativeComponent().then(function(result) 
            var url = null;
            if (result === "ok" && details.reason === "install") 
                // Also set the flag, onStartup() shall be called only
                // on next startup
                missing = false;
                // TODO: Add back HELLO page on install
                // once there is a nice tutorial
                 url = HELLO_URL;
                 console.log('succes'+ url);
             else if (result === "forbidden") 
                url = DEVELOPER_URL;
             else if (result === "missing")
                url = NO_NATIVE_URL;
            
            if (url) 
                chrome.tabs.create('url': url + "?" + details.reason);
            
    );

   );

  // When message is received from page send it to native
chrome.runtime.onMessage.addListener(function(request, sender, sendResponse) 
if(sender.id !== chrome.runtime.id && sender.extensionId !== chrome.runtime.id) 
    console.log('WARNING: Ignoring message not from our extension');
    // Not our extension, do nothing
    return;

if (sender.tab) 
    // Check if page is DONE and close the native component without doing anything else
    if (request["type"] === "DONE") 
        console.log("DONE " + sender.tab.id);
        if (sender.tab.id in ports) 
            // FIXME: would want to use Port.disconnect() here
            _killPort(sender.tab.id);
         
     else 
        request[K_TAB] = sender.tab.id;
        if (missing) 
            _testNativeComponent().then(function(result) 
                if (result === "ok") 
                    missing = false;
                    _forward(request);
                 else 
                    return _fail_with(request, "no_implementation");
                
            );
         else 
            // TODO: Check if the URL is in allowed list or not
            // Either way forward to native currently
            _forward(request);
        
    

    );

   // Send the message back to the originating tab
  function _reply(tab, msg) 
msg[K_SRC] = "background.js";
msg[K_EXTENSION] = chrome.runtime.getManifest().version;
chrome.tabs.sendMessage(tab, msg);
  
  // Fail an incoming message if the underlying implementation is not
  // present
  function _fail_with(msg, result) 
var resp = ;
resp[K_NONCE] = msg[K_NONCE];
resp[K_RESULT] = result;
_reply(msg[K_TAB], resp);
  
 // Forward a message to the native component
 function _forward(message) 
var tabid = message[K_TAB];
console.log("SEND " + tabid + ": " + JSON.stringify(message));
// Open a port if necessary
if(!ports[tabid]) 
    // For some reason there does not seem to be a way to detect missing components from longrunning ports
    // So we probe before opening a new port.
    console.log("OPEN " + tabid + ": " + NATIVE_HOST);
    // create a new port
    var port = chrome.runtime.connectNative(NATIVE_HOST);
    // XXX: does not indicate anything for some reason.
    if (!port) 
        console.log("OPEN ERROR: " + JSON.stringify(chrome.runtime.lastError));
    
    port.onMessage.addListener(function(response) 
        if (response) 
            console.log("RECV "+tabid+": " + JSON.stringify(response));
            _reply(tabid, response);
         else 
            console.log("ERROR "+tabid+": " + JSON.stringify(chrome.runtime.lastError));
            _fail_with(message, "technical_error");
        
    );
    port.onDisconnect.addListener(function() 
        console.log("QUIT " + tabid);
        delete ports[tabid];
        // TODO: reject all pending promises for tab, if any
    );
    ports[tabid] = port;
    ports[tabid].postMessage(message);
 else 
    // Port already open
    ports[tabid].postMessage(message);

chrome.runtime.onMessageExternal.addListener(
   function(request, sender, sendResponse) 
if (sender.url == blacklistedWebsite)
  return;  // don't allow this web page access
if (request.openUrlInEditor)
  openUrl(request.openUrlInEditor);
   );

错误 后台页面已激活 TEST: ERROR "message":"与本机消息传递主机通信时出错。"

当我运行扩展时，我有：

当我写一些东西或在 Enter 触摸或关闭 cmd 时单击 2 次时，我有这个：