bit4bit@riseup.net
04174317eb
FossilOrigin-Name: b8359ab0ec70de2298980189453dbec3fbdee8c9658e113bd7c5babf5cab8ebe
245 lines
9.0 KiB
Python
245 lines
9.0 KiB
Python
# This file is part of facho. The COPYRIGHT file at the top level of
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# this repository contains the full copyright notices and license terms.
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from ..facho import FachoXML, FachoXMLExtension
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import xmlsig
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import xades
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from datetime import datetime
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import OpenSSL
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import zipfile
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import warnings
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import hashlib
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from contextlib import contextmanager
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from .data import dian
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NAMESPACES = {
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'fe': 'http://www.dian.gov.co/contratos/facturaelectronica/v1',
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'cac': 'urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2',
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'cbc': 'urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2',
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'cdt': 'urn:DocumentInformation:names:specification:ubl:colombia:schema:xsd:DocumentInformationAggregateComponents-1',
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'clm54217': 'urn:un:unece:uncefact:codelist:specification:54217:2001',
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'clmIANAMIMEMediaType': 'urn:un:unece:uncefact:codelist:specification:IANAMIMEMediaType:2003',
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'ext': 'urn:oasis:names:specification:ubl:schema:xsd:CommonExtensionComponents-2',
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'qdt': 'urn:oasis:names:specification:ubl:schema:xsd:QualifiedDatatypes-2',
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'sts': 'http://www.dian.gov.co/contratos/facturaelectronica/v1/Structures',
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'udt': 'urn:un:unece:uncefact:data:specification:UnqualifiedDataTypesSchemaModule:2',
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'xsi': 'http://www.w3.org/2001/XMLSchema-instance',
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'xades': 'http://uri.etsi.org/01903/v1.3.2#',
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'ds': 'http://www.w3.org/2000/09/xmldsig#',
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}
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class FeXML(FachoXML):
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def __init__(self, root, namespace):
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super().__init__("{%s}%s" % (namespace, root),
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nsmap=NAMESPACES)
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self._cn = root.rstrip('/')
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#self.find_or_create_element(self._cn)
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class DianXMLExtensionCUFE(FachoXMLExtension):
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AMBIENTE_PRUEBAS = 'Pruebas'
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AMBIENTE_PRODUCCION = 'Producción'
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def __init__(self, invoice, tipo_ambiente = AMBIENTE_PRUEBAS, clave_tecnica = ''):
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self.tipo_ambiente = tipo_ambiente
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self.clave_tecnica = clave_tecnica
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self.invoice = invoice
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def _tipo_ambiente(self):
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return int(dian.TipoAmbiente[self.tipo_ambiente]['code'])
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def build(self, fachoxml):
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cufe = self._generate_cufe(self.invoice, fachoxml)
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fachoxml.set_element('/fe:Invoice/cbc:UUID[schemaName="CUFE-SHA384"]', cufe)
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fachoxml.set_element('/fe:Invoice/cbc:ProfileExecutionID', self._tipo_ambiente())
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return '', []
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def issue_time(self, datetime_):
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return datetime_.strftime('%H:%M:%S%z')
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def issue_date(self, datetime_):
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return datetime_.strftime('%Y-%m-%d')
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def _generate_cufe(self, invoice, fachoxml):
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NumFac = invoice.invoice_ident
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FecFac = self.issue_date(invoice.invoice_issue)
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HoraFac = self.issue_time(invoice.invoice_issue)
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ValorBruto = invoice.invoice_legal_monetary_total.line_extension_amount
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ValorTotalPagar = invoice.invoice_legal_monetary_total.payable_amount
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ValorImpuestoPara = {}
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ValorImpuesto1 = 0.0
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CodImpuesto1 = 1
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ValorImpuesto2 = 0.0
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CodImpuesto2 = 4
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ValorImpuesto3 = 0.0
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CodImpuesto3 = 3
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for invoice_line in invoice.invoice_lines:
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for subtotal in invoice_line.tax.subtotals:
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# TODO cual es la naturaleza de tax_scheme_ident?
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codigo_impuesto = int(subtotal.tax_scheme_ident)
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ValorImpuestoPara.setdefault(codigo_impuesto, 0.0)
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ValorImpuestoPara[codigo_impuesto] += subtotal.tax_amount
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NitOFE = invoice.invoice_supplier.ident
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NumAdq = invoice.invoice_customer.ident
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TipoAmb = self._tipo_ambiente()
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ClTec = str(self.clave_tecnica)
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formatVars = [
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'%s' % NumFac,
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'%s' % FecFac,
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'%s' % HoraFac,
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'%.02f' % ValorBruto,
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'%02d' % CodImpuesto1,
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'%.02f' % ValorImpuestoPara.get(CodImpuesto1, 0.0),
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'%02d' % CodImpuesto2,
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'%.02f' % ValorImpuestoPara.get(CodImpuesto2, 0.0),
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'%02d' % CodImpuesto3,
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'%.02f' % ValorImpuestoPara.get(CodImpuesto3, 0.0),
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'%.02f' % ValorTotalPagar,
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'%s' % NitOFE,
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'%s' % NumAdq,
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'%s' % ClTec,
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'%d' % TipoAmb,
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]
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cufe = "".join(formatVars)
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# crear hash...
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h = hashlib.sha384()
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h.update(cufe.encode('utf-8'))
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return h.hexdigest()
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class DianXMLExtensionSoftwareSecurityCode(FachoXMLExtension):
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# RESOLUCION 0001: pagina 535
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def __init__(self, id_software: str, pin: str, invoice_ident: str):
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self.id_software = id_software
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self.pin = pin
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self.invoice_ident = invoice_ident
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def build(self, fachoxml):
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dian_path = '/ext:UBLExtensions/ext:UBLExtension/ext:ExtensionContent/sts:DianExtensions/sts:SoftwareSecurityCode'
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code = str(self.id_software) + str(self.pin) + str(self.invoice_ident)
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m = hashlib.sha384()
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m.update(code.encode('utf-8'))
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return dian_path, m.hexdigest()
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class DianXMLExtensionSigner(FachoXMLExtension):
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# RESOLUCION 0001: pagina 516
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POLICY_ID = 'https://facturaelectronica.dian.gov.co/politicadefirma/v2/politicadefirmav2.pdf'
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POLICY_NAME = 'Dian'
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def __init__(self, pkcs12_path, passphrase=None):
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self._pkcs12_path = pkcs12_path
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self._passphrase = None
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if passphrase:
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self._passphrase = passphrase.encode('utf-8')
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@classmethod
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def from_pkcs12(self, filepath, password=None):
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p12 = OpenSSL.crypto.load_pkcs12(open(filepath, 'rb').read(), password)
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# return (xpath, xml.Element)
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def build(self, fachoxml):
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dian_path = '/ext:UBLExtensions/ext:UBLExtension/ext:ExtensionContent'
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signature = xmlsig.template.create(
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xmlsig.constants.TransformInclC14N,
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xmlsig.constants.TransformRsaSha256,
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"Signature",
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)
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ref = xmlsig.template.add_reference(
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signature, xmlsig.constants.TransformSha256, uri="", name="R1"
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)
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xmlsig.template.add_transform(ref, xmlsig.constants.TransformEnveloped)
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xmlsig.template.add_reference(
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signature, xmlsig.constants.TransformSha256, uri="#KI", name="RKI"
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)
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ki = xmlsig.template.ensure_key_info(signature, name="KI")
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data = xmlsig.template.add_x509_data(ki)
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xmlsig.template.x509_data_add_certificate(data)
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serial = xmlsig.template.x509_data_add_issuer_serial(data)
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xmlsig.template.x509_issuer_serial_add_issuer_name(serial)
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xmlsig.template.x509_issuer_serial_add_serial_number(serial)
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xmlsig.template.add_key_value(ki)
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qualifying = xades.template.create_qualifying_properties(signature)
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xades.utils.ensure_id(qualifying)
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xades.utils.ensure_id(qualifying)
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# TODO assert with http://www.sic.gov.co/hora-legal-colombiana
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props = xades.template.create_signed_properties(qualifying, datetime=datetime.now())
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xades.template.add_claimed_role(props, "supplier")
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#signed_do = xades.template.ensure_signed_data_object_properties(props)
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#xades.template.add_data_object_format(
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# signed_do, "#R1",
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# identifier=xades.ObjectIdentifier("Idenfitier0", "Description")
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#)
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#xades.template.add_commitment_type_indication(
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# signed_do,
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# xades.ObjectIdentifier("Idenfitier0", "Description"),
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# qualifiers_type=["Tipo"],
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#)
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#xades.template.add_commitment_type_indication(
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# signed_do,
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# xades.ObjectIdentifier("Idenfitier1", references=["#R1"]),
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# references=["#R1"],
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#)
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#xades.template.add_data_object_format(
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# signed_do,
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# "#RKI",
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# description="Desc",
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# mime_type="application/xml",
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# encoding="UTF-8",
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#)
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fachoxml.root.append(signature)
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policy = xades.policy.GenericPolicyId(
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self.POLICY_ID,
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self.POLICY_NAME,
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xmlsig.constants.TransformSha256)
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ctx = xades.XAdESContext(policy)
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ctx.load_pkcs12(OpenSSL.crypto.load_pkcs12(open(self._pkcs12_path, 'rb').read(),
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self._passphrase))
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ctx.sign(signature)
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ctx.verify(signature)
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#xmlsig take parent root
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fachoxml.root.remove(signature)
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return (dian_path, [signature])
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class DianZIP:
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# RESOLUCION 0001: pagina 540
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MAX_FILES = 50
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def __init__(self, file_like):
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self.zipfile = zipfile.ZipFile(file_like, mode='w')
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self.num_files = 0
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def add_invoice_xml(self, name, xml_data):
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self.num_files += 1
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# TODO cual es la norma para los nombres de archivos?
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m = hashlib.sha256()
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m.update(name.encode('utf-8'))
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filename = m.hexdigest() + '.xml'
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with self.zipfile.open(filename, 'w') as fp:
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fp.write(xml_data.encode('utf-8'))
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return filename
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def __enter__(self):
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return self
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def __exit__(self, type, value, traceback):
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return self.zipfile.close()
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