using System;

using System.Collections.Generic;

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

​

public class Program

{

    public static void Main()

    {

        string json = @"

        {   

        ""tipo_identificacion_id"": 1,

        ""NumeroEmpleado_id"": 94060312,

        ""SalarioMensual"": 700000,

        ""UsuarioLogin"": ""superuser"" 

        }";

        string json2 = @"{""consulta_id"":null,""respuesta_id"":null,""tipo_identificacion_persona_juridica_id"":""NI"",

                ""numero_identificacion_persona_juridica"":""800021308"",""razon_social"":""DRUMMOND LTD"",""ciiu"":""2399"",

                ""nombre_actividad"":"" Fabricación de otros productos minerales no metálicos n.c.p."",

                ""clase_aportante"":""Aportante con 200 o más cotizantes"",""tipo_aportante"":""Empleador"",""nivel_riesgo"":""Medio"",

                ""dias_desde_vencimiento"":""<=30"",""mediana"":""4156978838"",""promedio"":""4305516948"",""maximo"":""5135895588"",

                ""minimo"":""2756162423"",""tendencia"":""Creciente"",""desvest"":""626768379"",""variacion"":""0.863422686972755"",

                ""pagos_nomina"":[{""periodo"":""202006"",""empleados"":""358"",""nomina"":""5135895588""},{""periodo"":""202005"",""empleados"":""319"",""nomina"":""2756162423""},{""periodo"":""202004"",""empleados"":""440"",""nomina"":""4036467479""},{""periodo"":""202003"",""empleados"":""461"",""nomina"":""4047530130""},{""periodo"":""202002"",""empleados"":""458"",""nomina"":""4116841390""},{""periodo"":""202001"",""empleados"":""464"",""nomina"":""4125970457""},{""periodo"":""201912"",""empleados"":""473"",""nomina"":""4765820670""},{""periodo"":""201911"",""empleados"":""464"",""nomina"":""4156978838""},{""periodo"":""201910"",""empleados"":""460"",""nomina"":""3901219271""},{""periodo"":""201909"",""empleados"":""501"",""nomina"":""4725006722""},{""periodo"":""201908"",""empleados"":""496"",""nomina"":""5036742537""},{""periodo"":""201907"",""empleados"":""485"",""nomina"":""4861567873""}]}";

        string json3 = @"

        {  

        ""tipo_identificacion_id"": 1,

        ""NumeroEmpleado_id"": ""46458092"",

        ""producto_id"": 8,

        ""SalarioMensual"": 1800000,

        ""cliente"": 1026132347 

        }";

        JToken token = JToken.Parse(json3);

        string[] jsonPaths = ExampleConfigSettings.GetJsonPathsToObscure();

        JsonHelper.ObscureMatchingValues(token, jsonPaths);

        ExampleLogger.Log(token.ToString(Formatting.None));

    }

}

​

public static class JsonHelper

{

    public static void ObscureMatchingValues(JToken token, IEnumerable<string> jsonPaths)

    {

        foreach (string path in jsonPaths)

        {

            foreach (JToken match in token.SelectTokens(path))

            {

                match.Replace(new JValue(Obscure(match.ToString())));

            }

        }

    }

​

    public static string Obscure(string s)

    {

        if (string.IsNullOrEmpty(s))

            return s;

        int len = s.Length;

        int leftLen = len > 4 ? 1 : 0;

        int rightLen = len > 6 ? Math.Min((len - 6) / 2, 4) : 0;

        return s.Substring(0, leftLen) + new string ('*', len - leftLen - rightLen) + s.Substring(len - rightLen);

    }

}

​

public static class ExampleConfigSettings

{

    public static string[] GetJsonPathsToObscure()

    {

        // In real code this would read the paths from a config file

        return new string[]{"$..NumeroEmpleado_id", "$..SalarioMensual", "$..Salario", "$..UsuarioLogin", "$..cliente", "$..numero_identificacion_persona_juridica", "$..nomina"};

    }

}

​

public static class ExampleLogger

{

    public static void Log(string s)

    {

        // In real code this would write to a file or SQL table

        Console.WriteLine(DateTime.UtcNow.ToString("yyyy-MM-dd HH:mm:ss.fff") + " - " + s);

    }

}