pyopenssl dependent endesive now optional

requirements.txt

@@ -1,5 +1,4 @@
 pytz>=2016.7
 cryptography==3.3.2
 signxml==2.8.2
-endesive==2.0.1
 chardet==3.0.4

src/erpbrasil/assinatura/assinatura.py

@@ -1,16 +1,18 @@
-# coding=utf-8
+import logging
 import signxml
 from base64 import b64encode
 from cryptography.hazmat.primitives import hashes
 from cryptography.hazmat.primitives.asymmetric import padding
-from endesive import pdf
 from lxml import etree
 from Crypto.PublicKey import RSA
 from Crypto.Hash import SHA
 from Crypto.Signature import PKCS1_v1_5
 from hashlib import sha1
 
 
+_logger = logging.getLogger(__name__)
+
+
 class Assinatura(object):
 
     def __init__(self, certificado):
@@ -126,6 +128,15 @@ def assina_string(self, message):
         return signature
 
     def assina_pdf(self, arquivo, dados_assinatura, algoritmo='sha256'):
+        try:
+            from endesive import pdf
+        except ImportError:
+            _logger.info(
+                "assina_pdf requires the https://github.com/m32/endesive"
+                "package but it is not bundled by default"
+                "to avoid depending on pyopenssl which is deprecated"
+            )
+            return False
         return pdf.cms.sign(
             datau=arquivo,
             udct=dados_assinatura,

tests/test_erpbrasil_assinatura_pdf.py

@@ -1,5 +1,4 @@
-# coding=utf-8
-
+import logging
 import os
 import tempfile
 from datetime import datetime
@@ -18,6 +17,8 @@
 
 test_path = os.environ.get('test_path', 'tests/')
 
+_logger = logging.getLogger(__name__)
+
 
 def test_assinatura_nfe_pdf():
     certificado = Certificado(certificado_nfe_caminho, certificado_nfe_senha, raise_expirado=False)
@@ -35,6 +36,16 @@ def test_assinatura_nfe_pdf():
         'reason': 'Teste assinatura',
     }
 
+    try:
+        from endesive import pdf
+    except ImportError:
+        _logger.info(
+            "skipping test because https://github.com/m32/endesive"
+            "package but it is not installed. It is not bundled by default"
+            "to avoid depending on pyopenssl which is deprecated."
+        )
+    return False
+
     assinatura = assinador.assina_pdf(
         arquivo=arquivo,
         dados_assinatura=dados_assinatura,
@@ -61,6 +72,16 @@ def test_assinatura_multipla_pdf():
         'reason': 'Teste Assinatura CPF',
     }
 
+    try:
+        from endesive import pdf
+    except ImportError:
+        _logger.info(
+            "skipping test because https://github.com/m32/endesive"
+            "package but it is not installed. It is not bundled by default"
+            "to avoid depending on pyopenssl which is deprecated."
+        )
+    return False
+
     assinatura1 = assinador_ecpf.assina_pdf(
         arquivo=arquivo,
         dados_assinatura=dados_assinatura,