codeflexDian 1.3.0

CODEFLEX CLOUD S.A.S

Firmar Petición SOAP a la DIAN | NIT: 901829324-9
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About The Project

Installation

pip install codeflexDian

Usage

• Example 1 | Lambda Function (AWS) | GetNumberingRange

  import lxml.etree as ET
  from codeflexDian.SOAPSing import SOAPSing
  from codeflexDian.Signing import Signing
  import boto3
  import os
  from string import Template
  
  def lambda_handler(event, context):
  
    # VARIABLES
    ProviderSub = event['ProviderSub'] # Bucket S3
    accountCode = event['accountCode'] # Código de cuenta del proveedor
    accountCodeT = event['accountCodeT'] # Código de cuenta del proveedor para el conjunto de pruebas
    softwareCode = event['softwareCode'] # Código del software del proveedor
    ProviderEmail = event['ProviderEmail'] # Correo electrónico
  
    s3subir = boto3.client('s3')
    s3 = boto3.resource('s3')
  
    pathCert = "/tmp/" + ProviderSub + "/certificado.pfx"
    pathClave = "/tmp/" + ProviderSub + "/clave.txt"
    
    metodo = "GetNumberingRange"
  
    # CREA DIRECTORIO DE TRABAJO SI NO EXISTE
    directory = "/tmp/" + ProviderSub
    if not os.path.exists(directory):
        os.makedirs(directory)
    
    # Descarga el certificado
    s3.Bucket(ProviderSub).download_file("certificado.pfx", pathCert)
    
    # Descarga la clave
    s3.Bucket(ProviderSub).download_file("clave.txt", pathClave)
    
    # Lee la clave
    with open(pathClave) as f:
        passwordCert = f.readline().strip()
  
    # Si la clave es NA entonces la clave será un blanco
    if (passwordCert == "NA"):
        passwordCert = ""
    
    signing = Signing(pathCert, passwordCert)
    signer = SOAPSing(signing, metodo)
    template = Template('''<wcf:GetNumberingRange xmlns:wcf="http://wcf.dian.colombia"><wcf:accountCode>${accountCode}</wcf:accountCode><wcf:accountCodeT>${accountCodeT}</wcf:accountCodeT><wcf:softwareCode>${softwareCode}</wcf:softwareCode></wcf:GetNumberingRange>''')      
    value = {
        'accountCode': accountCode,
        'accountCodeT': accountCodeT,
        'softwareCode': softwareCode
    }
    templateOk = template.substitute(value)
    element = ET.fromstring(templateOk)
    soapSigned = signer.sing(element)
    soapSingedStrin = ET.tostring(soapSigned)
  
    # Escribe Request firmado en /tmp
    open('/tmp/' + ProviderSub + '/' + 'RANGOS-SIGN.xml', 'wb').write(soapSingedStrin)
    
    # Sube Request firmado de /tmp a s3
    s3subir.upload_file('/tmp/' + ProviderSub + '/' + 'RANGOS-SIGN.xml', ProviderSub, 'RANGOS-SIGN.xml')
    
    # Retorno de información de destino
    return {
        'ProviderSub': ProviderSub,
        'ProviderEmail': ProviderEmail
    }
  

• Example 2 | Lambda Function (AWS) | SendBillSync

  import lxml.etree as ET
  from codeflexDian.SOAPSing import SOAPSing
  from codeflexDian.Signing import Signing
  import base64
  import boto3
  import os
  import json
  from string import Template
  
  def lambda_handler(event, context):
  
    """
    Antes de ejecutar este código, asegúrate de zippear la factura XML firmada.
    El código del ejemplo: Example 1 | Lambda Function (AWS) | GetNumberingRange solo 
    se utiliza para consultar los rangos de numeración.
    """
    # Para saber cómo zippear la factura XML firmada con el formato deseado, 
    # consulta el código que está abajo como 'zipfile'.
  
    #---------------------------------------------------------------------------------------#
  
    # VARIABLES
    ProviderSub = event['ProviderSub'] # Bucket S3
    ProviderEmail = event['ProviderEmail'] # Correo electrónico
    Invoice = event['Invoice'] # Número de la factura EJ: B77404
    IssueDate = event['IssueDate'] # Fecha de emisión de la factura
    TestSetId = event['TestSetId'] # ID del conjunto de pruebas
    Ambiente = event['Ambiente'] # Ambiente de la solicitud (1 para pruebas, 2 para producción)
    
    if Ambiente == "2":
        metodo = "SendTestSetAsync"
    
    if Ambiente == "1":
        metodo = "SendBillSync"
  
    s3subir = boto3.client('s3')
    s3 = boto3.resource('s3')
  
    pathCert = "/tmp/" + ProviderSub + "/certificado.pfx"
    pathClave = "/tmp/" + ProviderSub + "/clave.txt"
  
    # CREA DIRECTORIO DE TRABAJO SI NO EXISTE
    directory = "/tmp/" + ProviderSub
    if not os.path.exists(directory):
        os.makedirs(directory)
  
    # Descarga el certificado
    s3.Bucket(ProviderSub).download_file("certificado.pfx", pathCert)
  
    # Descarga la clave
    s3.Bucket(ProviderSub).download_file("clave.txt", pathClave)
  
    # Lee la clave
    with open(pathClave) as f:
        passwordCert = f.readline().strip()
  
    # Si la clave es NA entonces la clave será un blanco
    if passwordCert == "NA":
        passwordCert = "" 
  
    # Descarga la factura xml firmada
    s3.Bucket(ProviderSub).download_file(Invoice + "-ZIP.zip", "/tmp/" + ProviderSub + "/" + Invoice + "-ZIP.zip")
  
    with open("/tmp/" + ProviderSub + "/" + Invoice + "-ZIP.zip", "rb") as f:
        bytes = f.read()
        encode_string = base64.b64encode(bytes).decode('ascii')
  
    signing = Signing(pathCert, passwordCert)
    signer = SOAPSing(signing, metodo)
    template = Template('''<wcf:${metodo} xmlns:wcf="http://wcf.dian.colombia"><wcf:fileName>${fileName}</wcf:fileName><wcf:contentFile>${contentFile}</wcf:contentFile><wcf:testSetId>${TestSetId}</wcf:testSetId></wcf:${metodo}>''')
    value = {
        'fileName': Invoice+'.zip',
        'contentFile': encode_string,
        'TestSetId': TestSetId,
        'metodo': metodo
    }
  
    templateOk = template.substitute(value)
    element = ET.fromstring(templateOk)
    soapSigned = signer.sing(element)
    soapSignedString = ET.tostring(soapSigned)
  
    # Escribe Request firmado en /tmp
    open('/tmp/' + ProviderSub + '/' + Invoice + '-REQ-SIGN.xml', 'wb').write(soapSignedString)
  
    # Sube Request firmado de /tmp a s3
    s3subir.upload_file('/tmp/' + ProviderSub + '/' + Invoice + '-REQ-SIGN.xml', ProviderSub, Invoice+'-REQ-SIGN.xml')
  
    # Retorno de información de destino
    return {
        'ProviderSub': ProviderSub,
        'ProviderEmail': ProviderEmail,
        'Invoice': Invoice,
        'IssueDate': IssueDate,
        'Ambiente': Ambiente
    }
  

• zipfile | Lambda Function (AWS)

  import zipfile
  import zlib
  import boto3
  import botocore
  import base64
  import os
  import json
  
  try:
    import zlib
    compression = zipfile.ZIP_DEFLATED
  except:
    compression = zipfile.ZIP_STORED
  
  def lambda_handler(event, context):
  
    # VARIABLES
    ProviderSub = event['ProviderSub'] # Bucket S3
    Factura = event['Factura'] # Número de la factura EJ: B77404
  
    # TODO implement
    Invoice = Factura
    bucket_name = ProviderSub
    s3subir = boto3.client('s3')
    s3 = boto3.resource('s3') 
    
    #CREA DIRECTORIO DE TRABAJO SI NO EXISTE
    directory = "/tmp/"+Invoice
    if not os.path.exists(directory):
        os.makedirs(directory)
  
    # DESCARGA DE S3 LA FACTURA FIRMADA
    s3.Bucket(bucket_name).download_file(Factura + "-SIGN.xml", directory+'/SIGN.xml')
    
    #COMPRIMIR EN /TMP
    zf = zipfile.ZipFile('/tmp/' + Invoice + '/zip.zip', mode='w')
    try:
        zf.write('/tmp/' + Invoice + '/SIGN.xml', arcname='firmado.xml', compress_type=compression)
    finally:
        zf.close()
    
    # Sube el archivo a s3
    s3subir.upload_file('/tmp/' + Invoice + '/zip.zip', bucket_name, Factura + "-ZIP.zip")
  
    return {
        'statusCode': 200,
        'body': json.dumps(Invoice + ".zip, Subido correctamente a S3.")
    }
  

The company that currently uses our library is: FacturaDian

Download the list of layers to use in Lambda AWS: Python

OFFICIAL WEBSITE: CODEFLEX CLOUD S.A.S.

License

Distributed under the MIT License. See LICENSE for more information.

Contact

Phone: +57 3008130562 | E-mail: info@codeflex.com.co