crypto modules: fix sanity errors (#60046)

* Remove sanity warnings.

* Linting.

* More linting.

* Forgot one place.

* no_bytes -> num_bytes

lib/ansible/module_utils/acme.py

@@ -231,13 +231,13 @@ def _parse_key_openssl(openssl_binary, module, key_file=None, key_content=None):
         if asn1_oid_curve == 'prime256v1' or nist_curve == 'p-256':
             bits = 256
             alg = 'ES256'
-            hash = 'sha256'
+            hashalg = 'sha256'
             point_size = 32
             curve = 'P-256'
         elif asn1_oid_curve == 'secp384r1' or nist_curve == 'p-384':
             bits = 384
             alg = 'ES384'
-            hash = 'sha384'
+            hashalg = 'sha384'
             point_size = 48
             curve = 'P-384'
         elif asn1_oid_curve == 'secp521r1' or nist_curve == 'p-521':
@@ -245,13 +245,13 @@ def _parse_key_openssl(openssl_binary, module, key_file=None, key_content=None):
             # https://github.com/letsencrypt/boulder/issues/2217
             bits = 521
             alg = 'ES512'
-            hash = 'sha512'
+            hashalg = 'sha512'
             point_size = 66
             curve = 'P-521'
         else:
             return 'unknown elliptic curve: %s / %s' % (asn1_oid_curve, nist_curve), {}
-        bytes = (bits + 7) // 8
-        if len(pub_hex) != 2 * bytes:
+        num_bytes = (bits + 7) // 8
+        if len(pub_hex) != 2 * num_bytes:
             return 'bad elliptic curve point (%s / %s)' % (asn1_oid_curve, nist_curve), {}
         return None, {
             'key_file': key_file,
@@ -260,10 +260,10 @@ def _parse_key_openssl(openssl_binary, module, key_file=None, key_content=None):
             'jwk': {
                 "kty": "EC",
                 "crv": curve,
-                "x": nopad_b64(pub_hex[:bytes]),
-                "y": nopad_b64(pub_hex[bytes:]),
+                "x": nopad_b64(pub_hex[:num_bytes]),
+                "y": nopad_b64(pub_hex[num_bytes:]),
             },
-            'hash': hash,
+            'hash': hashalg,
             'point_size': point_size,
         }
 
@@ -363,13 +363,13 @@ def _parse_key_cryptography(module, key_file=None, key_content=None):
         if pk.curve.name == 'secp256r1':
             bits = 256
             alg = 'ES256'
-            hash = 'sha256'
+            hashalg = 'sha256'
             point_size = 32
             curve = 'P-256'
         elif pk.curve.name == 'secp384r1':
             bits = 384
             alg = 'ES384'
-            hash = 'sha384'
+            hashalg = 'sha384'
             point_size = 48
             curve = 'P-384'
         elif pk.curve.name == 'secp521r1':
@@ -377,12 +377,12 @@ def _parse_key_cryptography(module, key_file=None, key_content=None):
             # https://github.com/letsencrypt/boulder/issues/2217
             bits = 521
             alg = 'ES512'
-            hash = 'sha512'
+            hashalg = 'sha512'
             point_size = 66
             curve = 'P-521'
         else:
             return 'unknown elliptic curve: {0}'.format(pk.curve.name), {}
-        bytes = (bits + 7) // 8
+        num_bytes = (bits + 7) // 8
         return None, {
             'key_obj': key,
             'type': 'ec',
@@ -390,10 +390,10 @@ def _parse_key_cryptography(module, key_file=None, key_content=None):
             'jwk': {
                 "kty": "EC",
                 "crv": curve,
-                "x": nopad_b64(_convert_int_to_bytes(bytes, pk.x)),
-                "y": nopad_b64(_convert_int_to_bytes(bytes, pk.y)),
+                "x": nopad_b64(_convert_int_to_bytes(num_bytes, pk.x)),
+                "y": nopad_b64(_convert_int_to_bytes(num_bytes, pk.y)),
             },
-            'hash': hash,
+            'hash': hashalg,
             'point_size': point_size,
         }
     else:
@@ -404,16 +404,16 @@ def _sign_request_cryptography(module, payload64, protected64, key_data):
     sign_payload = "{0}.{1}".format(protected64, payload64).encode('utf8')
     if isinstance(key_data['key_obj'], cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey):
         padding = cryptography.hazmat.primitives.asymmetric.padding.PKCS1v15()
-        hash = cryptography.hazmat.primitives.hashes.SHA256()
-        signature = key_data['key_obj'].sign(sign_payload, padding, hash)
+        hashalg = cryptography.hazmat.primitives.hashes.SHA256
+        signature = key_data['key_obj'].sign(sign_payload, padding, hashalg())
     elif isinstance(key_data['key_obj'], cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKey):
         if key_data['hash'] == 'sha256':
-            hash = cryptography.hazmat.primitives.hashes.SHA256
+            hashalg = cryptography.hazmat.primitives.hashes.SHA256
         elif key_data['hash'] == 'sha384':
-            hash = cryptography.hazmat.primitives.hashes.SHA384
+            hashalg = cryptography.hazmat.primitives.hashes.SHA384
         elif key_data['hash'] == 'sha512':
-            hash = cryptography.hazmat.primitives.hashes.SHA512
-        ecdsa = cryptography.hazmat.primitives.asymmetric.ec.ECDSA(hash())
+            hashalg = cryptography.hazmat.primitives.hashes.SHA512
+        ecdsa = cryptography.hazmat.primitives.asymmetric.ec.ECDSA(hashalg())
         r, s = cryptography.hazmat.primitives.asymmetric.utils.decode_dss_signature(key_data['key_obj'].sign(sign_payload, ecdsa))
         rr = _pad_hex(r, 2 * key_data['point_size'])
         ss = _pad_hex(s, 2 * key_data['point_size'])

lib/ansible/module_utils/crypto.py

@@ -26,6 +26,9 @@
 # Copyright (c) the OpenSSL contributors
 # For more details, search for the function _OID_MAP.
 
+from __future__ import absolute_import, division, print_function
+__metaclass__ = type
+
 
 from distutils.version import LooseVersion
 
@@ -1732,10 +1735,10 @@ def cryptography_get_name(name):
     raise OpenSSLObjectError('Cannot parse Subject Alternative Name "{0}" (potentially unsupported by cryptography backend)'.format(name))
 
 
-def _get_hex(bytes):
-    if bytes is None:
-        return bytes
-    data = binascii.hexlify(bytes)
+def _get_hex(bytesstr):
+    if bytesstr is None:
+        return bytesstr
+    data = binascii.hexlify(bytesstr)
     data = to_text(b':'.join(data[i:i + 2] for i in range(0, len(data), 2)))
     return data
 

lib/ansible/modules/crypto/acme/acme_certificate.py

@@ -970,7 +970,7 @@ class ACMEClient(object):
                     result, info = self.account.send_signed_request(auth['uri'], authz_deactivate)
                     if 200 <= info['status'] < 300 and result.get('status') == 'deactivated':
                         auth['status'] = 'deactivated'
-                except Exception as e:
+                except Exception as dummy:
                     # Ignore errors on deactivating authzs
                     pass
                 if auth.get('status') != 'deactivated':

lib/ansible/modules/crypto/acme/acme_challenge_cert_helper.py

@@ -168,7 +168,7 @@ try:
     from distutils.version import LooseVersion
     HAS_CRYPTOGRAPHY = (LooseVersion(cryptography.__version__) >= LooseVersion('1.3'))
     _cryptography_backend = cryptography.hazmat.backends.default_backend()
-except ImportError as e:
+except ImportError as dummy:
     CRYPTOGRAPHY_IMP_ERR = traceback.format_exc()
     HAS_CRYPTOGRAPHY = False
 

lib/ansible/modules/crypto/certificate_complete_chain.py

@@ -141,7 +141,7 @@ try:
     from distutils.version import LooseVersion
     HAS_CRYPTOGRAPHY = (LooseVersion(cryptography.__version__) >= LooseVersion('1.5'))
     _cryptography_backend = cryptography.hazmat.backends.default_backend()
-except ImportError as e:
+except ImportError as dummy:
     CRYPTOGRAPHY_IMP_ERR = traceback.format_exc()
     HAS_CRYPTOGRAPHY = False
 
@@ -185,7 +185,7 @@ def is_parent(module, cert, potential_parent):
             module.warn('Unknown public key type "{0}"'.format(public_key))
             return False
         return True
-    except cryptography.exceptions.InvalidSignature as e:
+    except cryptography.exceptions.InvalidSignature as dummy:
         return False
     except Exception as e:
         module.fail_json(msg='Unknown error on signature validation: {0}'.format(e))
@@ -258,9 +258,9 @@ class CertificateSet(object):
         '''
         b_path = to_bytes(path, errors='surrogate_or_strict')
         if os.path.isdir(b_path):
-            for dir, dummy, files in os.walk(b_path, followlinks=True):
+            for directory, dummy, files in os.walk(b_path, followlinks=True):
                 for file in files:
-                    self._load_file(os.path.join(dir, file))
+                    self._load_file(os.path.join(directory, file))
         else:
             self._load_file(b_path)
 

lib/ansible/modules/crypto/luks_device.py

@@ -362,11 +362,11 @@ class ConditionsHandler(Handler):
             # container is not open
             return None
 
-        if (self._module.params['name'] is None):
+        if self._module.params['name'] is None:
             # container is already opened
             return name
 
-        if (name != self._module.params['name']):
+        if name != self._module.params['name']:
             # the container is already open but with different name:
             # suspicious. back off
             self._module.fail_json(msg="LUKS container is already opened "

lib/ansible/modules/crypto/openssh_cert.py

@@ -196,13 +196,11 @@ info:
 
 import os
 import errno
-import random
 import re
 import tempfile
 
 from datetime import datetime
 from datetime import MINYEAR, MAXYEAR
-from datetime import timedelta
 from shutil import copy2
 from shutil import rmtree
 from ansible.module_utils.basic import AnsibleModule
@@ -366,8 +364,8 @@ class Certificate(object):
     def is_same_datetime(self, datetime_one, datetime_two):
 
         # This function is for backwards compatability only because .total_seconds() is new in python2.7
-        def timedelta_total_seconds(timedelta):
-            return ((timedelta.microseconds + 0.0 + (timedelta.seconds + timedelta.days * 24 * 3600) * 10 ** 6) / 10 ** 6)
+        def timedelta_total_seconds(time_delta):
+            return (time_delta.microseconds + 0.0 + (time_delta.seconds + time_delta.days * 24 * 3600) * 10 ** 6) / 10 ** 6
         # try to use .total_ seconds() from python2.7
         try:
             return (datetime_one - datetime_two).total_seconds() == 0.0
@@ -519,7 +517,6 @@ class Certificate(object):
                 raise CertificateError(exc)
             else:
                 pass
-        return
 
 
 def main():

lib/ansible/modules/crypto/openssl_csr.py

@@ -726,9 +726,9 @@ class CertificateSigningRequestCryptography(CertificateSigningRequestBase):
             current_subject = [(sub.oid, sub.value) for sub in csr.subject]
             return set(subject) == set(current_subject)
 
-        def _find_extension(extensions, type):
+        def _find_extension(extensions, exttype):
             return next(
-                (ext for ext in extensions if isinstance(ext.value, type)),
+                (ext for ext in extensions if isinstance(ext.value, exttype)),
                 None
             )
 

lib/ansible/modules/crypto/openssl_csr_info.py

@@ -164,14 +164,12 @@ public_key_fingerprints:
 
 
 import abc
-import datetime
 import os
 import traceback
 from distutils.version import LooseVersion
 
 from ansible.module_utils import crypto as crypto_utils
 from ansible.module_utils.basic import AnsibleModule, missing_required_lib
-from ansible.module_utils.six import string_types
 from ansible.module_utils._text import to_native, to_text, to_bytes
 from ansible.module_utils.compat import ipaddress as compat_ipaddress
 

lib/ansible/modules/crypto/openssl_privatekey.py

@@ -270,7 +270,6 @@ else:
 from ansible.module_utils import crypto as crypto_utils
 from ansible.module_utils._text import to_native, to_bytes
 from ansible.module_utils.basic import AnsibleModule, missing_required_lib
-from ansible.module_utils.six import string_types
 
 
 class PrivateKeyError(crypto_utils.OpenSSLObjectError):
@@ -488,7 +487,7 @@ class PrivateKeyCryptography(PrivateKeyBase):
             self.module.fail_json(msg='Your cryptography version does not support Ed448')
 
     def _generate_private_key_data(self):
-        format = cryptography.hazmat.primitives.serialization.PrivateFormat.TraditionalOpenSSL
+        export_format = cryptography.hazmat.primitives.serialization.PrivateFormat.TraditionalOpenSSL
         try:
             if self.type == 'RSA':
                 self.privatekey = cryptography.hazmat.primitives.asymmetric.rsa.generate_private_key(
@@ -503,16 +502,16 @@ class PrivateKeyCryptography(PrivateKeyBase):
                 )
             if CRYPTOGRAPHY_HAS_X25519_FULL and self.type == 'X25519':
                 self.privatekey = cryptography.hazmat.primitives.asymmetric.x25519.X25519PrivateKey.generate()
-                format = cryptography.hazmat.primitives.serialization.PrivateFormat.PKCS8
+                export_format = cryptography.hazmat.primitives.serialization.PrivateFormat.PKCS8
             if CRYPTOGRAPHY_HAS_X448 and self.type == 'X448':
                 self.privatekey = cryptography.hazmat.primitives.asymmetric.x448.X448PrivateKey.generate()
-                format = cryptography.hazmat.primitives.serialization.PrivateFormat.PKCS8
+                export_format = cryptography.hazmat.primitives.serialization.PrivateFormat.PKCS8
             if CRYPTOGRAPHY_HAS_ED25519 and self.type == 'Ed25519':
                 self.privatekey = cryptography.hazmat.primitives.asymmetric.ed25519.Ed25519PrivateKey.generate()
-                format = cryptography.hazmat.primitives.serialization.PrivateFormat.PKCS8
+                export_format = cryptography.hazmat.primitives.serialization.PrivateFormat.PKCS8
             if CRYPTOGRAPHY_HAS_ED448 and self.type == 'Ed448':
                 self.privatekey = cryptography.hazmat.primitives.asymmetric.ed448.Ed448PrivateKey.generate()
-                format = cryptography.hazmat.primitives.serialization.PrivateFormat.PKCS8
+                export_format = cryptography.hazmat.primitives.serialization.PrivateFormat.PKCS8
             if self.type == 'ECC' and self.curve in self.curves:
                 if self.curves[self.curve]['deprecated']:
                     self.module.warn('Elliptic curves of type {0} should not be used for new keys!'.format(self.curve))
@@ -520,7 +519,7 @@ class PrivateKeyCryptography(PrivateKeyBase):
                     curve=self.curves[self.curve]['create'](self.size),
                     backend=self.cryptography_backend
                 )
-        except cryptography.exceptions.UnsupportedAlgorithm as e:
+        except cryptography.exceptions.UnsupportedAlgorithm as dummy:
             self.module.fail_json(msg='Cryptography backend does not support the algorithm required for {0}'.format(self.type))
 
         # Select key encryption
@@ -534,7 +533,7 @@ class PrivateKeyCryptography(PrivateKeyBase):
         # Serialize key
         return self.privatekey.private_bytes(
             encoding=cryptography.hazmat.primitives.serialization.Encoding.PEM,
-            format=format,
+            format=export_format,
             encryption_algorithm=encryption_algorithm
         )
 

lib/ansible/modules/crypto/openssl_privatekey_info.py

@@ -440,11 +440,11 @@ class PrivateKeyInfoPyOpenSSL(PrivateKeyInfo):
         '''Convert OpenSSL BIGINT to Python integer'''
         if bn == OpenSSL._util.ffi.NULL:
             return None
+        hexstr = OpenSSL._util.lib.BN_bn2hex(bn)
         try:
-            hex = OpenSSL._util.lib.BN_bn2hex(bn)
-            return int(OpenSSL._util.ffi.string(hex), 16)
+            return int(OpenSSL._util.ffi.string(hexstr), 16)
         finally:
-            OpenSSL._util.lib.OPENSSL_free(hex)
+            OpenSSL._util.lib.OPENSSL_free(hexstr)
 
     def _get_key_info(self):
         key_public_data = dict()

lib/ansible/modules/crypto/openssl_publickey.py

@@ -237,7 +237,7 @@ class PublicKey(crypto_utils.OpenSSLObject):
         else:
             try:
                 return crypto.dump_publickey(crypto.FILETYPE_PEM, self.privatekey)
-            except AttributeError as exc:
+            except AttributeError as dummy:
                 raise PublicKeyError('You need to have PyOpenSSL>=16.0.0 to generate public keys')
 
     def generate(self, module):

lib/ansible/plugins/doc_fragments/acme.py

@@ -3,6 +3,9 @@
 # Copyright: (c) 2016 Michael Gruener <michael.gruener@chaosmoon.net>
 # GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 
+from __future__ import absolute_import, division, print_function
+__metaclass__ = type
+
 
 class ModuleDocFragment(object):
 

test/integration/targets/get_certificate/files/process_certs.py

@@ -1,3 +1,6 @@
+from __future__ import absolute_import, division, print_function
+__metaclass__ = type
+
 from sys import argv
 from subprocess import Popen, PIPE, STDOUT
 

test/sanity/ignore.txt

@@ -211,8 +211,6 @@ lib/ansible/module_utils/compat/ipaddress.py no-assert
 lib/ansible/module_utils/compat/ipaddress.py no-unicode-literals
 lib/ansible/module_utils/connection.py future-import-boilerplate
 lib/ansible/module_utils/connection.py metaclass-boilerplate
-lib/ansible/module_utils/crypto.py future-import-boilerplate
-lib/ansible/module_utils/crypto.py metaclass-boilerplate
 lib/ansible/module_utils/database.py future-import-boilerplate
 lib/ansible/module_utils/database.py metaclass-boilerplate
 lib/ansible/module_utils/digital_ocean.py future-import-boilerplate
@@ -6084,8 +6082,6 @@ lib/ansible/plugins/doc_fragments/a10.py future-import-boilerplate
 lib/ansible/plugins/doc_fragments/a10.py metaclass-boilerplate
 lib/ansible/plugins/doc_fragments/aci.py future-import-boilerplate
 lib/ansible/plugins/doc_fragments/aci.py metaclass-boilerplate
-lib/ansible/plugins/doc_fragments/acme.py future-import-boilerplate
-lib/ansible/plugins/doc_fragments/acme.py metaclass-boilerplate
 lib/ansible/plugins/doc_fragments/aireos.py future-import-boilerplate
 lib/ansible/plugins/doc_fragments/aireos.py metaclass-boilerplate
 lib/ansible/plugins/doc_fragments/alicloud.py future-import-boilerplate
@@ -6325,8 +6321,6 @@ test/integration/targets/aws_lambda/files/mini_lambda.py metaclass-boilerplate
 test/integration/targets/collections/collection_root_user/ansible_collections/testns/testcoll/plugins/module_utils/MyPSMU.psm1 pslint:PSUseApprovedVerbs
 test/integration/targets/expect/files/test_command.py future-import-boilerplate
 test/integration/targets/expect/files/test_command.py metaclass-boilerplate
-test/integration/targets/get_certificate/files/process_certs.py future-import-boilerplate
-test/integration/targets/get_certificate/files/process_certs.py metaclass-boilerplate
 test/integration/targets/get_url/files/testserver.py future-import-boilerplate
 test/integration/targets/get_url/files/testserver.py metaclass-boilerplate
 test/integration/targets/group/files/gidget.py future-import-boilerplate
@@ -6484,8 +6478,6 @@ test/units/mock/path.py future-import-boilerplate
 test/units/mock/path.py metaclass-boilerplate
 test/units/mock/yaml_helper.py future-import-boilerplate
 test/units/mock/yaml_helper.py metaclass-boilerplate
-test/units/module_utils/acme/test_acme.py future-import-boilerplate
-test/units/module_utils/acme/test_acme.py metaclass-boilerplate
 test/units/module_utils/aws/test_aws_module.py metaclass-boilerplate
 test/units/module_utils/basic/test__symbolic_mode_to_octal.py future-import-boilerplate
 test/units/module_utils/basic/test_deprecate_warn.py future-import-boilerplate
@@ -6640,8 +6632,6 @@ test/units/modules/cloud/xenserver/FakeXenAPI.py future-import-boilerplate
 test/units/modules/cloud/xenserver/FakeXenAPI.py metaclass-boilerplate
 test/units/modules/conftest.py future-import-boilerplate
 test/units/modules/conftest.py metaclass-boilerplate
-test/units/modules/crypto/test_luks_device.py future-import-boilerplate
-test/units/modules/crypto/test_luks_device.py metaclass-boilerplate
 test/units/modules/files/test_copy.py future-import-boilerplate
 test/units/modules/messaging/rabbitmq/test_rabbimq_user.py future-import-boilerplate
 test/units/modules/messaging/rabbitmq/test_rabbimq_user.py metaclass-boilerplate

test/units/module_utils/acme/test_acme.py

@@ -1,3 +1,6 @@
+from __future__ import absolute_import, division, print_function
+__metaclass__ = type
+
 import base64
 import datetime
 import os.path

test/units/modules/crypto/test_luks_device.py

@@ -1,3 +1,6 @@
+from __future__ import absolute_import, division, print_function
+__metaclass__ = type
+
 import pytest
 from ansible.modules.crypto import luks_device