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LoginCmsClient.cs
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LoginCmsClient.cs
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using Newtonsoft.Json;
using System;
using System.IO;
using System.Net;
using System.ServiceModel;
using System.Text;
using System.Threading.Tasks;
using System.Xml;
namespace AfipWsfeClient
{
/// <summary>
/// Clase para crear objetos Login Tickets
/// </summary>
/// <remarks>
/// Ver documentacion:
/// Especificacion Tecnica del Webservice de Autenticacion y Autorizacion
/// Version 1.0
/// Departamento de Seguridad Informatica - AFIP
/// </remarks>
public class LoginCmsClient
{
public bool IsProdEnvironment { get; set; } = false;
public string WsaaUrlHomologation { get; set; } = "https://wsaahomo.afip.gov.ar/ws/services/LoginCms";
public string WsaaUrlProd { get; set; } = "https://wsaa.afip.gov.ar/ws/services/LoginCms";
/// <summary>
/// The path must end with \\
/// </summary>
public string TicketCacheFolderPath { get; set; } = "";
public uint UniqueId; // Entero de 32 bits sin signo que identifica el requerimiento
public DateTime GenerationTime; // Momento en que fue generado el requerimiento
public DateTime ExpirationTime; // Momento en el que expira la solicitud
public string Service; // Identificacion del WSN para el cual se solicita el TA
public string Sign; // Firma de seguridad recibida en la respuesta
public string Token; // Token de seguridad recibido en la respuesta
public XmlDocument XmlLoginTicketRequest = null;
public XmlDocument XmlLoginTicketResponse = null;
public string CertificatePath;
public string XmlStrLoginTicketRequestTemplate = "<loginTicketRequest><header><uniqueId></uniqueId><generationTime></generationTime><expirationTime></expirationTime></header><service></service></loginTicketRequest>";
private bool VerboseMode = true;
private static uint GlobalUniqueID = 0; // OJO! NO ES THREAD-SAFE
/// <summary>
/// Construye un Login Ticket obtenido del WSAA
/// </summary>
/// <param name="service">Servicio al que se desea acceder</param>
/// <param name="urlWsaa">URL del WSAA</param>
/// <param name="x509CertificateFilePath">Ruta del certificado X509 (con clave privada) usado para firmar</param>
/// <param name="password">Password del certificado X509 (con clave privada) usado para firmar</param>
/// <param name="verbose">Nivel detallado de descripcion? true/false</param>
/// <remarks></remarks>
public async Task<WsaaTicket> LoginCmsAsync(string service,
string x509CertificateFilePath,
string password,
bool verbose)
{
var ticketCacheFile = string.IsNullOrEmpty(TicketCacheFolderPath) ?
service + "ticket.json" :
TicketCacheFolderPath + service + "ticket.json";
if (File.Exists(ticketCacheFile))
{
var ticketJson = File.ReadAllText(ticketCacheFile);
var ticket = JsonConvert.DeserializeObject<WsaaTicket>(ticketJson);
if (DateTime.UtcNow <= ticket.ExpirationTime)
return ticket;
}
const string ID_FNC = "[ObtenerLoginTicketResponse]";
CertificatePath = x509CertificateFilePath;
VerboseMode = verbose;
X509CertificateManager.VerboseMode = verbose;
// PASO 1: Genero el Login Ticket Request
try
{
GlobalUniqueID += 1;
XmlLoginTicketRequest = new XmlDocument();
XmlLoginTicketRequest.LoadXml(XmlStrLoginTicketRequestTemplate);
var xmlNodoUniqueId = XmlLoginTicketRequest.SelectSingleNode("//uniqueId");
var xmlNodoGenerationTime = XmlLoginTicketRequest.SelectSingleNode("//generationTime");
var xmlNodoExpirationTime = XmlLoginTicketRequest.SelectSingleNode("//expirationTime");
var xmlNodoService = XmlLoginTicketRequest.SelectSingleNode("//service");
xmlNodoGenerationTime.InnerText = DateTime.Now.AddMinutes(-10).ToString("s");
xmlNodoExpirationTime.InnerText = DateTime.Now.AddMinutes(+10).ToString("s");
xmlNodoUniqueId.InnerText = Convert.ToString(GlobalUniqueID);
xmlNodoService.InnerText = service;
Service = service;
if (VerboseMode) Console.WriteLine(XmlLoginTicketRequest.OuterXml);
}
catch (Exception ex)
{
throw new Exception(ID_FNC + "***Error GENERANDO el LoginTicketRequest : " + ex.Message + ex.StackTrace);
}
string base64SignedCms;
// PASO 2: Firmo el Login Ticket Request
try
{
if (VerboseMode) Console.WriteLine(ID_FNC + "***Leyendo certificado: {0}", CertificatePath);
var securePassword = new NetworkCredential("", password).SecurePassword;
securePassword.MakeReadOnly();
var certFirmante = X509CertificateManager.GetCertificateFromFile(CertificatePath, securePassword);
if (VerboseMode)
{
Console.WriteLine(ID_FNC + "***Firmando: ");
Console.WriteLine(XmlLoginTicketRequest.OuterXml);
}
// Convierto el Login Ticket Request a bytes, firmo el msg y lo convierto a Base64
var msgEncoding = Encoding.UTF8;
var msgBytes = msgEncoding.GetBytes(XmlLoginTicketRequest.OuterXml);
var encodedSignedCms = X509CertificateManager.SignMessageBytes(msgBytes, certFirmante);
base64SignedCms = Convert.ToBase64String(encodedSignedCms);
}
catch (Exception ex)
{
throw new Exception(ID_FNC + "***Error FIRMANDO el LoginTicketRequest : " + ex.Message);
}
string loginTicketResponse;
// PASO 3: Invoco al WSAA para obtener el Login Ticket Response
try
{
if (VerboseMode)
{
Console.WriteLine(ID_FNC + "***Llamando al WSAA en URL: {0}", IsProdEnvironment ? WsaaUrlProd : WsaaUrlHomologation);
Console.WriteLine(ID_FNC + "***Argumento en el request:");
Console.WriteLine(base64SignedCms);
}
var wsaaService = new AfipLoginCmsServiceReference.LoginCMSClient();
wsaaService.Endpoint.Address = new EndpointAddress(IsProdEnvironment ? WsaaUrlProd : WsaaUrlHomologation);
var response = await wsaaService.loginCmsAsync(base64SignedCms);
loginTicketResponse = response.loginCmsReturn;
if (VerboseMode)
{
Console.WriteLine(ID_FNC + "***LoguinTicketResponse: ");
Console.WriteLine(loginTicketResponse);
}
}
catch (Exception ex)
{
throw new Exception(ID_FNC + "***Error INVOCANDO al servicio WSAA : " + ex.Message);
}
// PASO 4: Analizo el Login Ticket Response recibido del WSAA
try
{
XmlLoginTicketResponse = new XmlDocument();
XmlLoginTicketResponse.LoadXml(loginTicketResponse);
UniqueId = uint.Parse(XmlLoginTicketResponse.SelectSingleNode("//uniqueId").InnerText);
GenerationTime = DateTime.Parse(XmlLoginTicketResponse.SelectSingleNode("//generationTime").InnerText);
ExpirationTime = DateTime.Parse(XmlLoginTicketResponse.SelectSingleNode("//expirationTime").InnerText);
Sign = XmlLoginTicketResponse.SelectSingleNode("//sign").InnerText;
Token = XmlLoginTicketResponse.SelectSingleNode("//token").InnerText;
}
catch (Exception ex)
{
throw new Exception(ID_FNC + "***Error ANALIZANDO el LoginTicketResponse : " + ex.Message);
}
var ticketResponse = new WsaaTicket { Sign = Sign, Token = Token, ExpirationTime = ExpirationTime };
File.WriteAllText(ticketCacheFile, JsonConvert.SerializeObject(ticketResponse));
return ticketResponse;
}
}
}