Question

我使用此代码

// background.js
chrome.runtime.sendNativeMessage( "com.example.native",
  { text: "test" },
  function(response) {
    console.log("Received " + response);
});

C＃代码

private static void OpenStandardStreamOut(string stringData)
{
    string msgdata =  "{\"text\":\"" + stringData + "\"}";
    int DataLength = msgdata.Length;
    Stream stdout = Console.OpenStandardOutput();
    stdout.WriteByte((byte)((DataLength >> 0) & 0xFF));
    stdout.WriteByte((byte)((DataLength >> 8) & 0xFF));
    stdout.WriteByte((byte)((DataLength >> 16) & 0xFF));
    stdout.WriteByte((byte)((DataLength >> 24) & 0xFF));
    Console.Write(msgdata);
}

private static List<LoginPack> OpenStandardStreamIn()
{
    Stream stdin = Console.OpenStandardInput();
    int length = 0;
    byte[] bytes = new byte[4];
    stdin.Read(bytes, 0, 4);
    length = System.BitConverter.ToInt32(bytes, 0);
    string input = "";
    for (int i = 0; i < length; i++)
    {
        input += (char)stdin.ReadByte();
    }
    JObject Read=(JObject)JsonConvert.DeserializeObject<JObject>(input);
    //string dataPackStr = JsonConvert.SerializeObject(Read);
    Chrome chromeClass = new Chrome();
    List<LoginPack> lp = new List<LoginPack>();
    if (Read!=null)
        if (Read.Count != 0)
            lp = chromeClass.getInfoFromChrome(Read["text"].ToString());
    if (lp.Count == 0)
        return null;
    return lp;
}

// class chrome

public class Chrome
{
    public class Data
    {
        public string key { get; set; }
        public string value { get; set; }
    }

    public List<LoginPack> getInfoFromChrome(string colName)
    {
        try
        {
            // string filename = "my_chrome_passwords.html";
            //  StreamWriter Writer = new StreamWriter(filename, false, Encoding.UTF8);
            string db_way = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData)
                + "/Google/Chrome/User Data/Profile 1/Login Data1";
            Console.WriteLine("DB file = " + db_way);
            string db_field = "logins";
            List<LoginPack> lp = new List<LoginPack>();
            byte[] entropy = null;
            string description;
            string ConnectionString = "data source=" + db_way + ";New=True;UseUTF16Encoding=True";
            DataTable DB = new DataTable();
            string sql = string.Format("SELECT * FROM {0} where action_url=\"{1}\" or origin_url=\"{2}\"", db_field, colName, colName);
            // System.IO.StreamWriter file1 = new System.IO.StreamWriter("c:\\test.txt");
            // file1.WriteLine(sql);
            // file1.Close();
            using (SQLiteConnection connect = new SQLiteConnection(ConnectionString))
            {
                SQLiteCommand command = new SQLiteCommand(sql, connect);
                SQLiteDataAdapter adapter = new SQLiteDataAdapter(command);
                adapter.Fill(DB);
                int rows = DB.Rows.Count;
                for (int i = 0; i < rows; i++)
                {
                    byte[] byteArray = (byte[])DB.Rows[i][5];
                    byte[] decrypted = DPAPI.Decrypt(byteArray, entropy, out description);
                    lp.Add(new LoginPack { userNameElement = (string)DB.Rows[i][2], userName = (string)DB.Rows[i][3], passElement = (string)DB.Rows[i][4], pass = new UTF8Encoding(true).GetString(decrypted) });
                    //System.IO.StreamWriter file = new System.IO.StreamWriter("c:\\test2.txt");
                    //file.WriteLine(lp[i].userName);
                    //file.Close();
                }
            }
            // Writer.Close();
            return lp;
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message);
            ex = ex.InnerException;
            return null;
        }
    }
}

应用程序（C＃）从扩展中提供数据但扩展程序无法从应用程序获得任何响应如果我首先使用OpenStandardStreamOut函数（在C＃app中），那么Extension可以从中获得响应有什么问题？

Answer 1

我认为您的“Chrome”课程效果不佳。再次检查并确保使用标准流而不是第三方Streams。同时删除Console.WriteLine("DB file = " + db_way);行并重试。

本机消息响应扩展chrome

1 个答案: