Nota de BH utiliza duas assinaturas

Correçõs nos templates

pytrustnfe/nfse/bh/__init__.py

@@ -2,14 +2,14 @@
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 
 import os
-
+from lxml import etree
 from requests import Session
 from zeep import Client
 from zeep.transports import Transport
 
 from pytrustnfe.certificado import extract_cert_and_key_from_pfx, save_cert_key
 from pytrustnfe.xml import render_xml, sanitize_response
-from pytrustnfe.nfe.assinatura import Assinatura
+from pytrustnfe.nfse.bh.assinatura import Assinatura
 
 
 def _render(certificado, method, **kwargs):
@@ -18,12 +18,14 @@ def _render(certificado, method, **kwargs):
 
     reference = ''
     if method == 'GerarNfse':
-        reference = 'r%s' % kwargs['rps']['numero']
+        reference = 'rps:%s' % kwargs['rps']['numero']
+        ref_lote = 'lote%s' % kwargs['rps']['numero_lote']
     elif method == 'CancelarNfse':
         reference = 'Cancelamento_NF%s' % kwargs['cancelamento']['numero_nfse']
 
     signer = Assinatura(certificado.pfx, certificado.password)
     xml_send = signer.assina_xml(xml_send, reference)
+    xml_send = signer.assina_xml(etree.fromstring(xml_send), ref_lote)
     return xml_send.encode('utf-8')
 
 
@@ -35,7 +37,9 @@ def _send(certificado, method, **kwargs):
         base_url = 'https://bhisshomologa.pbh.gov.br/bhiss-ws/nfse?wsdl'
 
     xml_send = kwargs["xml"].decode('utf-8')
-    xml_cabecalho = ''
+    xml_cabecalho = '<?xml version="1.0" encoding="UTF-8"?>\
+    <cabecalho xmlns="http://www.abrasf.org.br/nfse.xsd" versao="1.00">\
+    <versaoDados>1.00</versaoDados></cabecalho>'
 
     cert, key = extract_cert_and_key_from_pfx(
         certificado.pfx, certificado.password)
@@ -50,7 +54,7 @@ def _send(certificado, method, **kwargs):
 
     response = client.service[method](xml_cabecalho, xml_send)
 
-    response, obj = sanitize_response(response)
+    response, obj = sanitize_response(response.encode('utf-8'))
     return {
         'sent_xml': str(xml_send),
         'received_xml': str(response),

pytrustnfe/nfse/bh/assinatura.py

@@ -0,0 +1,44 @@
+# -*- coding: utf-8 -*-
+# © 2016 Danimar Ribeiro, Trustcode
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+import signxml
+from lxml import etree
+from pytrustnfe.certificado import extract_cert_and_key_from_pfx
+from signxml import XMLSigner
+
+
+class Assinatura(object):
+
+    def __init__(self, arquivo, senha):
+        self.arquivo = arquivo
+        self.senha = senha
+
+    def assina_xml(self, xml_element, reference):
+        cert, key = extract_cert_and_key_from_pfx(self.arquivo, self.senha)
+
+        for element in xml_element.iter("*"):
+            if element.text is not None and not element.text.strip():
+                element.text = None
+
+        signer = XMLSigner(
+            method=signxml.methods.enveloped, signature_algorithm="rsa-sha1",
+            digest_algorithm='sha1',
+            c14n_algorithm='http://www.w3.org/TR/2001/REC-xml-c14n-20010315')
+
+        ns = {}
+        ns[None] = signer.namespaces['ds']
+        signer.namespaces = ns
+
+        ref_uri = ('#%s' % reference) if reference else None
+        signed_root = signer.sign(
+            xml_element, key=key.encode(), cert=cert.encode(),
+            reference_uri=ref_uri)
+        if reference:
+            element_signed = signed_root.find(".//*[@Id='%s']" % reference)
+            signature = signed_root.find(".//*[@URI='#%s']" % reference).getparent().getparent()
+
+            if element_signed is not None and signature is not None:
+                parent = element_signed.getparent()
+                parent.append(signature)
+        return etree.tostring(signed_root, encoding=str)

pytrustnfe/nfse/bh/templates/GerarNfse.xml

@@ -1,8 +1,8 @@
 <GerarNfseEnvio xmlns="http://www.abrasf.org.br/nfse.xsd">
-    <LoteRps Id="lote{{ nfse.numero_lote }}">
-        <NumeroLote>{{ nfse.numero_lote }}</NumeroLote>
-        <Cnpj>{{ nfse.cnpj_prestador }}</Cnpj>
-        <InscricaoMunicipal>{{ nfse.inscricao_municipal }}</InscricaoMunicipal>
+    <LoteRps Id="lote{{ rps.numero_lote }}" versao="1.00">
+        <NumeroLote>{{ rps.numero_lote }}</NumeroLote>
+        <Cnpj>{{ rps.prestador.cnpj }}</Cnpj>
+        <InscricaoMunicipal>{{ rps.prestador.inscricao_municipal }}</InscricaoMunicipal>
         <QuantidadeRps>1</QuantidadeRps>
         <ListaRps xmlns="http://www.abrasf.org.br/nfse.xsd">
             {% include 'Rps.xml' %}

pytrustnfe/nfse/bh/templates/Rps.xml

@@ -1,5 +1,5 @@
 <Rps>
-    <InfRps xmlns="http://www.abrasf.org.br/ABRASF/arquivos/nfse.xsd" Id="r{{ rps.numero }}">
+    <InfRps xmlns="http://www.abrasf.org.br/nfse.xsd" Id="rps:{{ rps.numero }}">
         <IdentificacaoRps>
             <Numero>{{ rps.numero }}</Numero>
             <Serie>{{ rps.serie }}</Serie>

setup.py

@@ -37,6 +37,7 @@ later (LGPLv2+)',
         'nfse/imperial/templates/*xml',
         'nfse/floripa/templates/*xml',
         'nfse/carioca/templates/*xml',
+        'nfse/bh/templates/*xml',
         'xml/schemas/*xsd',
     ]},
     url='https://github.com/danimaribeiro/PyTrustNFe',