Flake8 and Pylint validations fixed

fabfile/lib.py

@@ -15,9 +15,9 @@ from fabvenv import virtualenv
 
 
 FABRIC_ROOT = os.path.dirname(__file__)
-PROJECT_ROOT = os.path.dirname(FABRIC_ROOT)
+project_root = os.path.dirname(FABRIC_ROOT)
 VENV_ROOT = os.path.expanduser(os.path.join('~', '.virtualenvs', 'pybitmessage-devops'))
-PYTHONPATH = os.path.join(PROJECT_ROOT, 'src',)
+PYTHONPATH = os.path.join(project_root, 'src',)
 
 
 def coerce_list(value):
@@ -72,7 +72,7 @@ def filelist_from_git(rev=None):
         else:
             cmd += ' -r {}'.format(rev)
 
-    with cd(PROJECT_ROOT):
+    with cd(project_root):
         with hide('running', 'stdout'):
             results = []
             ansi_escape = re.compile(r'\x1B\[[0-?]*[ -/]*[@-~]')
@@ -92,7 +92,7 @@ def pycodestyle(path_to_file):
                 return run(
                     'pycodestyle --config={0} {1}'.format(
                         os.path.join(
-                            PROJECT_ROOT,
+                            project_root,
                             'setup.cfg',
                         ),
                         path_to_file,
@@ -108,7 +108,7 @@ def flake8(path_to_file):
                 return run(
                     'flake8 --config={0} {1}'.format(
                         os.path.join(
-                            PROJECT_ROOT,
+                            project_root,
                             'setup.cfg',
                         ),
                         path_to_file,
@@ -125,7 +125,7 @@ def pylint(path_to_file):
                     return run(
                         'pylint --rcfile={0} {1}'.format(
                             os.path.join(
-                                PROJECT_ROOT,
+                                project_root,
                                 'setup.cfg',
                             ),
                             path_to_file,

fabfile/tasks.py

@@ -15,7 +15,7 @@ from fabric.contrib.project import rsync_project
 from fabvenv import virtualenv
 
 from fabfile.lib import (
-    autopep8, PROJECT_ROOT, VENV_ROOT, coerce_bool, flatten, filelist_from_git, default_hosts,
+    autopep8, project_root, VENV_ROOT, coerce_bool, flatten, filelist_from_git, default_hosts,
     get_filtered_pycodestyle_output, get_filtered_flake8_output, get_filtered_pylint_output,
 )
 
@@ -28,16 +28,18 @@ def get_tool_results(file_list):
 
     results = []
     for path_to_file in file_list:
-        result = {}
-        result['pycodestyle_violations'] = get_filtered_pycodestyle_output(path_to_file)
-        result['flake8_violations'] = get_filtered_flake8_output(path_to_file)
-        result['pylint_violations'] = get_filtered_pylint_output(path_to_file)
-        result['path_to_file'] = path_to_file
+        result = {
+            'pycodestyle_violations': get_filtered_pycodestyle_output(path_to_file),
+            'flake8_violations': get_filtered_flake8_output(path_to_file),
+            'pylint_violations': get_filtered_pylint_output(path_to_file),
+            'path_to_file': path_to_file
+        }
         result['total_violations'] = sum([
             len(result['pycodestyle_violations']),
             len(result['flake8_violations']),
-            len(result['pylint_violations']),
+            len(result['pylint_violations'])
         ])
+
         results.append(result)
     return results
 
@@ -46,13 +48,13 @@ def print_results(results, top, verbose, details):
     """Print an item with the appropriate verbosity / detail"""
 
     if verbose and results:
-        print ''.join(
+        print(''.join(
             [
                 os.linesep,
                 'total pycodestyle flake8 pylint path_to_file',
                 os.linesep,
             ]
-        )
+        ))
 
     for item in sort_and_slice(results, top):
 
@@ -66,23 +68,23 @@ def print_results(results, top, verbose, details):
             )
         else:
             line = item['path_to_file']
-        print line
+        print(line)
 
         if details:
-            print "pycodestyle:"
+            print("pycodestyle:")
             for detail in flatten(item['pycodestyle_violations']):
-                print detail
-            print
+                print(detail)
+            print()
 
-            print "flake8:"
+            print("flake8:")
             for detail in flatten(item['flake8_violations']):
-                print detail
-            print
+                print(detail)
+            print()
 
-            print "pylint:"
+            print("pylint:")
             for detail in flatten(item['pylint_violations']):
-                print detail
-            print
+                print(detail)
+            print()
 
 
 def sort_and_slice(results, top):
@@ -107,13 +109,13 @@ def generate_file_list(filename):
             if filename:
                 filename = os.path.abspath(filename)
                 if not os.path.exists(filename):
-                    print "Bad filename, specify a Python file"
+                    print("Bad filename, specify a Python file")
                     sys.exit(1)
                 else:
                     file_list = [filename]
 
             else:
-                with cd(PROJECT_ROOT):
+                with cd(project_root):
                     file_list = [
                         os.path.abspath(i.rstrip('\r'))
                         for i in run('find . -name "*.py"').split(os.linesep)
@@ -137,15 +139,15 @@ def create_dependency_graphs():
         with hide('running', 'stdout'):
 
             # .. todo:: consider a better place to put this, use a particular commit
-            with cd(PROJECT_ROOT):
+            with cd(project_root):
                 with settings(warn_only=True):
                     if run('stat pyan').return_code:
                         run('git clone https://github.com/davidfraser/pyan.git')
-            with cd(os.path.join(PROJECT_ROOT, 'pyan')):
+            with cd(os.path.join(project_root, 'pyan')):
                 run('git checkout pre-python3')
 
             # .. todo:: Use better settings. This is MVP to make a diagram
-            with cd(PROJECT_ROOT):
+            with cd(project_root):
                 file_list = run("find . -type f -name '*.py' ! -path './src/.eggs/*'").split('\r\n')
                 for cmd in [
                         'neato -Goverlap=false -Tpng > deps-neato.png',
@@ -215,7 +217,7 @@ def code_quality(verbose=True, details=False, fix=False, filename=None, top=10,
 def test():
     """Run tests on the code"""
 
-    with cd(PROJECT_ROOT):
+    with cd(project_root):
         with virtualenv(VENV_ROOT):
 
             run('pip uninstall -y pybitmessage')
@@ -264,14 +266,14 @@ def build_docs(dep_graph=False, apidoc=True):
 
             apidoc_result = 0
             if apidoc:
-                run('mkdir -p {}'.format(os.path.join(PROJECT_ROOT, 'docs', 'autodoc')))
-                with cd(os.path.join(PROJECT_ROOT, 'docs', 'autodoc')):
+                run('mkdir -p {}'.format(os.path.join(project_root, 'docs', 'autodoc')))
+                with cd(os.path.join(project_root, 'docs', 'autodoc')):
                     with settings(warn_only=True):
                         run('rm *.rst')
-                with cd(os.path.join(PROJECT_ROOT, 'docs')):
+                with cd(os.path.join(project_root, 'docs')):
                     apidoc_result = run('sphinx-apidoc -o autodoc ..').return_code
 
-            with cd(os.path.join(PROJECT_ROOT, 'docs')):
+            with cd(os.path.join(project_root, 'docs')):
                 make_result = run('make html').return_code
                 return_code = apidoc_result + make_result
 
@@ -294,16 +296,16 @@ def push_docs(path=None):
     """
 
     # Making assumptions
-    WEB_ROOT = path if path is not None else os.path.join('var', 'www', 'html', 'pybitmessage', 'en', 'latest')
-    VERSION_ROOT = os.path.join(os.path.dirname(WEB_ROOT), softwareVersion)
+    web_root = path if path is not None else os.path.join('var', 'www', 'html', 'pybitmessage', 'en', 'latest')
+    version_root = os.path.join(os.path.dirname(web_root), softwareVersion)
 
     rsync_project(
-        remote_dir=VERSION_ROOT,
-        local_dir=os.path.join(PROJECT_ROOT, 'docs', '_build', 'html')
+        remote_dir=version_root,
+        local_dir=os.path.join(project_root, 'docs', '_build', 'html')
     )
-    result = run('ln -sf {0} {1}'.format(WEB_ROOT, VERSION_ROOT))
+    result = run('ln -sf {0} {1}'.format(web_root, version_root))
     if result.return_code:
-        print 'Linking the new release failed'
+        print('Linking the new release failed')
 
     # More assumptions
     sudo('systemctl restart apache2')
@@ -314,5 +316,5 @@ def push_docs(path=None):
 def clean():
     """Clean up files generated by fabric commands."""
     with hide('running', 'stdout'):
-        with cd(PROJECT_ROOT):
+        with cd(project_root):
             run(r"find . -name '*.pyc' -exec rm '{}' \;")

packages/collectd/pybitmessagestatus.py

@@ -7,18 +7,20 @@ import xmlrpclib
 pybmurl = ""
 api = ""
 
+
 def init_callback():
     global api
     api = xmlrpclib.ServerProxy(pybmurl)
     collectd.info('pybitmessagestatus.py init done')
 
-def config_callback(ObjConfiguration):
+
+def config_callback(obj_configuration):
     global pybmurl
     apiUsername = ""
     apiPassword = ""
     apiInterface = "127.0.0.1"
     apiPort = 8445
-    for node in ObjConfiguration.children:
+    for node in obj_configuration.children:
         key = node.key.lower()
         if key.lower() == "apiusername" and node.values:
             apiUsername = node.values[0]
@@ -31,14 +33,17 @@ def config_callback(ObjConfiguration):
     pybmurl = "http://" + apiUsername + ":" + apiPassword + "@" + apiInterface+ ":" + str(int(apiPort)) + "/"
     collectd.info('pybitmessagestatus.py config done')
 
+
 def read_callback():
     try:
-        clientStatus = json.loads(api.clientStatus())
+        client_status = json.loads(api.clientStatus())
     except:
         collectd.info("Exception loading or parsing JSON")
         return
 
-    for i in ["networkConnections", "numberOfPubkeysProcessed", "numberOfMessagesProcessed", "numberOfBroadcastsProcessed"]:
+    con_data = ["networkConnections", "numberOfPubkeysProcessed",
+                "numberOfMessagesProcessed", "numberOfBroadcastsProcessed"]
+    for i in con_data:
         metric = collectd.Values()
         metric.plugin = "pybitmessagestatus"
         if i[0:6] == "number":
@@ -47,11 +52,12 @@ def read_callback():
             metric.type = 'gauge'
         metric.type_instance = i.lower()
         try:
-            metric.values = [clientStatus[i]]
+            metric.values = [client_status[i]]
         except:
             collectd.info("Value for %s missing" % (i))
         metric.dispatch()
 
+
 if __name__ == "__main__":
     main()
 else:

src/helper_bootstrap.py

@@ -45,10 +45,10 @@ def dns():
         for port in [8080, 8444]:
             logger.debug("Resolving %i through SOCKS...", port)
             address_family = socket.AF_INET
-            sock = socks.socksocket(address_family, socket.SOCK_STREAM)
+            sock = socks.SockSocket(address_family, socket.SOCK_STREAM)
             sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
             sock.settimeout(20)
-            proxytype = socks.PROXY_TYPE_SOCKS5
+            proxytype = socks.proxy_type_socks5
             sockshostname = BMConfigParser().get(
                 'bitmessagesettings', 'sockshostname')
             socksport = BMConfigParser().getint(

src/pyelliptic/arithmetic.py

@@ -74,7 +74,7 @@ def base10_add(a, b):
     m = ((b[1] - a[1]) * inv(b[0] - a[0], P)) % P
     x = (m * m - a[0] - b[0]) % P
     y = (m * (a[0] - x) - a[1]) % P
-    return (x, y)
+    return x, y
 
 
 def base10_double(a):
@@ -83,7 +83,7 @@ def base10_double(a):
     m = ((3 * a[0] * a[0] + A) * inv(2 * a[1], P)) % P
     x = (m * m - 2 * a[0]) % P
     y = (m * (a[0] - x) - a[1]) % P
-    return (x, y)
+    return x, y
 
 
 def base10_multiply(a, n):
@@ -99,7 +99,7 @@ def base10_multiply(a, n):
 
 
 def hex_to_point(h):
-    return (decode(h[2:66], 16), decode(h[66:], 16))
+    return decode(h[2:66], 16), decode(h[66:], 16)
 
 
 def point_to_hex(p):

src/pyelliptic/cipher.py

@@ -21,17 +21,17 @@ class Cipher:
         ctx2 = pyelliptic.Cipher("secretkey", iv, 0, ciphername='aes-256-cfb')
         print ctx2.ciphering(ciphertext)
     """
-    def __init__(self, key, iv, do, ciphername='aes-256-cbc'):
+    def __init__(self, key, iv, do, cipher_name='aes-256-cbc'):
         """
         do == 1 => Encrypt; do == 0 => Decrypt
         """
-        self.cipher = OpenSSL.get_cipher(ciphername)
+        self.cipher = OpenSSL.get_cipher(cipher_name)
         self.ctx = OpenSSL.EVP_CIPHER_CTX_new()
         if do == 1 or do == 0:
             k = OpenSSL.malloc(key, len(key))
-            IV = OpenSSL.malloc(iv, len(iv))
+            iv1 = OpenSSL.malloc(iv, len(iv))
             OpenSSL.EVP_CipherInit_ex(
-                self.ctx, self.cipher.get_pointer(), 0, k, IV, do)
+                self.ctx, self.cipher.get_pointer(), 0, k, iv1, do)
         else:
             raise Exception("RTFM ...")
 
@@ -43,21 +43,21 @@ class Cipher:
         return OpenSSL.cipher_algo.keys()
 
     @staticmethod
-    def get_blocksize(ciphername):
-        cipher = OpenSSL.get_cipher(ciphername)
+    def get_blocksize(cipher_name):
+        cipher = OpenSSL.get_cipher(cipher_name)
         return cipher.get_blocksize()
 
     @staticmethod
-    def gen_IV(ciphername):
-        cipher = OpenSSL.get_cipher(ciphername)
+    def gen_IV(cipher_name):
+        cipher = OpenSSL.get_cipher(cipher_name)
         return OpenSSL.rand(cipher.get_blocksize())
 
-    def update(self, input):
+    def update(self, in_put):
         i = OpenSSL.c_int(0)
-        buffer = OpenSSL.malloc(b"", len(input) + self.cipher.get_blocksize())
-        inp = OpenSSL.malloc(input, len(input))
+        buffer = OpenSSL.malloc(b"", len(in_put) + self.cipher.get_blocksize())
+        inp = OpenSSL.malloc(in_put, len(in_put))
         if OpenSSL.EVP_CipherUpdate(self.ctx, OpenSSL.byref(buffer),
-                                    OpenSSL.byref(i), inp, len(input)) == 0:
+                                    OpenSSL.byref(i), inp, len(in_put)) == 0:
             raise Exception("[OpenSSL] EVP_CipherUpdate FAIL ...")
         return buffer.raw[0:i.value]
 
@@ -69,11 +69,11 @@ class Cipher:
             raise Exception("[OpenSSL] EVP_CipherFinal_ex FAIL ...")
         return buffer.raw[0:i.value]
 
-    def ciphering(self, input):
+    def ciphering(self, in_put):
         """
         Do update and final in one method
         """
-        buff = self.update(input)
+        buff = self.update(in_put)
         return buff + self.final()
 
     def __del__(self):

src/pyelliptic/ecc.py

@@ -175,9 +175,9 @@ class ECC(object):
                     group, pub_key, pub_key_x, pub_key_y, 0) == 0:
                 raise Exception("[OpenSSL] EC_POINT_get_affine_coordinates_GFp FAIL ...")
 
-            privkey = OpenSSL.malloc(0, OpenSSL.BN_num_bytes(priv_key))
-            pubkeyx = OpenSSL.malloc(0, OpenSSL.BN_num_bytes(pub_key_x))
-            pubkeyy = OpenSSL.malloc(0, OpenSSL.BN_num_bytes(pub_key_y))
+            privkey = OpenSSL.malloc(0, OpenSSL.bn_num_bytes(priv_key))
+            pubkeyx = OpenSSL.malloc(0, OpenSSL.bn_num_bytes(pub_key_x))
+            pubkeyy = OpenSSL.malloc(0, OpenSSL.bn_num_bytes(pub_key_y))
             OpenSSL.BN_bn2bin(priv_key, privkey)
             privkey = privkey.raw
             OpenSSL.BN_bn2bin(pub_key_x, pubkeyx)

src/pyelliptic/openssl.py

@@ -19,7 +19,9 @@ class CipherName:
         self._blocksize = blocksize
 
     def __str__(self):
-        return "Cipher : " + self._name + " | Blocksize : " + str(self._blocksize) + " | Fonction pointer : " + str(self._pointer)
+        return "Cipher : {} | Blocksize : {} | Fonction pointer : {}".format(
+            self._name, str(self._blocksize), str(self._pointer)
+        )
 
     def get_pointer(self):
         return self._pointer()
@@ -33,33 +35,33 @@ class CipherName:
 
 def get_version(library):
     version = None
-    hexversion = None
+    hex_version = None
     cflags = None
     try:
-        #OpenSSL 1.1
-        OPENSSL_VERSION = 0
-        OPENSSL_CFLAGS = 1
+        #  OpenSSL 1.1
+        openssl_version = 0
+        openssl_cflags = 1
         library.OpenSSL_version.argtypes = [ctypes.c_int]
         library.OpenSSL_version.restype = ctypes.c_char_p
-        version = library.OpenSSL_version(OPENSSL_VERSION)
-        cflags = library.OpenSSL_version(OPENSSL_CFLAGS)
+        version = library.OpenSSL_version(openssl_version)
+        cflags = library.OpenSSL_version(openssl_cflags)
         library.OpenSSL_version_num.restype = ctypes.c_long
-        hexversion = library.OpenSSL_version_num()
+        hex_version = library.OpenSSL_version_num()
     except AttributeError:
         try:
-            #OpenSSL 1.0
-            SSLEAY_VERSION = 0
-            SSLEAY_CFLAGS = 2
+            #  OpenSSL 1.0
+            ssleay_version = 0
+            ssleay_cflags = 2
             library.SSLeay.restype = ctypes.c_long
             library.SSLeay_version.restype = ctypes.c_char_p
             library.SSLeay_version.argtypes = [ctypes.c_int]
-            version = library.SSLeay_version(SSLEAY_VERSION)
-            cflags = library.SSLeay_version(SSLEAY_CFLAGS)
-            hexversion = library.SSLeay()
+            version = library.SSLeay_version(ssleay_version)
+            cflags = library.SSLeay_version(ssleay_cflags)
+            hex_version = library.SSLeay()
         except AttributeError:
-            #raise NotImplementedError('Cannot determine version of this OpenSSL library.')
+            #  raise NotImplementedError('Cannot determine version of this OpenSSL library.')
             pass
-    return (version, hexversion, cflags)
+    return version, hex_version, cflags
 
 
 class _OpenSSL:
@@ -130,7 +132,8 @@ class _OpenSSL:
 
         self.EC_POINT_get_affine_coordinates_GFp = self._lib.EC_POINT_get_affine_coordinates_GFp
         self.EC_POINT_get_affine_coordinates_GFp.restype = ctypes.c_int
-        self.EC_POINT_get_affine_coordinates_GFp.argtypes = [ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p]
+        self.EC_POINT_get_affine_coordinates_GFp.argtypes = [
+            ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p]
 
         self.EC_KEY_set_private_key = self._lib.EC_KEY_set_private_key
         self.EC_KEY_set_private_key.restype = ctypes.c_int
@@ -148,7 +151,8 @@ class _OpenSSL:
 
         self.EC_POINT_set_affine_coordinates_GFp = self._lib.EC_POINT_set_affine_coordinates_GFp
         self.EC_POINT_set_affine_coordinates_GFp.restype = ctypes.c_int
-        self.EC_POINT_set_affine_coordinates_GFp.argtypes = [ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p]
+        self.EC_POINT_set_affine_coordinates_GFp.argtypes = [
+            ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p]
 
         self.EC_POINT_new = self._lib.EC_POINT_new
         self.EC_POINT_new.restype = ctypes.c_void_p
@@ -164,7 +168,8 @@ class _OpenSSL:
 
         self.EC_POINT_mul = self._lib.EC_POINT_mul
         self.EC_POINT_mul.restype = None
-        self.EC_POINT_mul.argtypes = [ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p]
+        self.EC_POINT_mul.argtypes = [
+            ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p]
 
         self.EC_KEY_set_private_key = self._lib.EC_KEY_set_private_key
         self.EC_KEY_set_private_key.restype = ctypes.c_int
@@ -223,13 +228,13 @@ class _OpenSSL:
         self.EVP_aes_256_cbc.restype = ctypes.c_void_p
         self.EVP_aes_256_cbc.argtypes = []
 
-        #self.EVP_aes_128_ctr = self._lib.EVP_aes_128_ctr
-        #self.EVP_aes_128_ctr.restype = ctypes.c_void_p
-        #self.EVP_aes_128_ctr.argtypes = []
+        # self.EVP_aes_128_ctr = self._lib.EVP_aes_128_ctr
+        # self.EVP_aes_128_ctr.restype = ctypes.c_void_p
+        # self.EVP_aes_128_ctr.argtypes = []
 
-        #self.EVP_aes_256_ctr = self._lib.EVP_aes_256_ctr
-        #self.EVP_aes_256_ctr.restype = ctypes.c_void_p
-        #self.EVP_aes_256_ctr.argtypes = []
+        # self.EVP_aes_256_ctr = self._lib.EVP_aes_256_ctr
+        # self.EVP_aes_256_ctr.restype = ctypes.c_void_p
+        # self.EVP_aes_256_ctr.argtypes = []
 
         self.EVP_aes_128_ofb = self._lib.EVP_aes_128_ofb
         self.EVP_aes_128_ofb.restype = ctypes.c_void_p
@@ -266,8 +271,8 @@ class _OpenSSL:
 
         self.EVP_CipherUpdate = self._lib.EVP_CipherUpdate
         self.EVP_CipherUpdate.restype = ctypes.c_int
-        self.EVP_CipherUpdate.argtypes = [ctypes.c_void_p,
-                                          ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_int]
+        self.EVP_CipherUpdate.argtypes = [
+            ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_int]
 
         self.EVP_CipherFinal_ex = self._lib.EVP_CipherFinal_ex
         self.EVP_CipherFinal_ex.restype = ctypes.c_int
@@ -388,11 +393,11 @@ class _OpenSSL:
             'aes-256-cfb': CipherName('aes-256-cfb', self.EVP_aes_256_cfb128, 16),
             'aes-128-ofb': CipherName('aes-128-ofb', self._lib.EVP_aes_128_ofb, 16),
             'aes-256-ofb': CipherName('aes-256-ofb', self._lib.EVP_aes_256_ofb, 16),
-            #'aes-128-ctr': CipherName('aes-128-ctr', self._lib.EVP_aes_128_ctr, 16),
-            #'aes-256-ctr': CipherName('aes-256-ctr', self._lib.EVP_aes_256_ctr, 16),
+            # 'aes-128-ctr': CipherName('aes-128-ctr', self._lib.EVP_aes_128_ctr, 16),
+            # 'aes-256-ctr': CipherName('aes-256-ctr', self._lib.EVP_aes_256_ctr, 16),
             'bf-cfb': CipherName('bf-cfb', self.EVP_bf_cfb64, 8),
             'bf-cbc': CipherName('bf-cbc', self.EVP_bf_cbc, 8),
-            'rc4': CipherName('rc4', self.EVP_rc4, 128), # 128 is the initialisation size not block size
+            'rc4': CipherName('rc4', self.EVP_rc4, 128),  # 128 is the initialisation size not block size
         }
 
     def _set_curves(self):
@@ -430,9 +435,9 @@ class _OpenSSL:
             'sect571r1': 734,
         }
 
-    def BN_num_bytes(self, x):
+    def bn_num_bytes(self, x):
         """
-        returns the length of a BN (OpenSSl API)
+            returns the length of a BN (OpenSSl API)
         """
         return int((self.BN_num_bits(x) + 7) / 8)
 
@@ -452,13 +457,13 @@ class _OpenSSL:
             raise Exception("Unknown curve")
         return self.curves[name]
 
-    def get_curve_by_id(self, id):
+    def get_curve_by_id(self, curve_id):
         """
         returns the name of a elliptic curve with his id
         """
         res = None
         for i in self.curves:
-            if self.curves[i] == id:
+            if self.curves[i] == curve_id:
                 res = i
                 break
         if res is None:
@@ -485,7 +490,6 @@ class _OpenSSL:
         """
         returns a create_string_buffer (ctypes)
         """
-        buffer = None
         if data != 0:
             if sys.version_info.major == 3 and isinstance(data, type('')):
                 data = data.encode()
@@ -494,26 +498,27 @@ class _OpenSSL:
             buffer = self.create_string_buffer(size)
         return buffer
 
-def loadOpenSSL():
+
+def load_open_ssl():
     global OpenSSL
     from os import path, environ
     from ctypes.util import find_library
     
-    libdir = []
-    if getattr(sys,'frozen', None):
+    lib_dir = []
+    if getattr(sys, 'frozen', None):
         if 'darwin' in sys.platform:
-            libdir.extend([
-                path.join(environ['RESOURCEPATH'], '..', 'Frameworks','libcrypto.dylib'),
-                path.join(environ['RESOURCEPATH'], '..', 'Frameworks','libcrypto.1.1.0.dylib'),
-                path.join(environ['RESOURCEPATH'], '..', 'Frameworks','libcrypto.1.0.2.dylib'),
-                path.join(environ['RESOURCEPATH'], '..', 'Frameworks','libcrypto.1.0.1.dylib'),
-                path.join(environ['RESOURCEPATH'], '..', 'Frameworks','libcrypto.1.0.0.dylib'),
-                path.join(environ['RESOURCEPATH'], '..', 'Frameworks','libcrypto.0.9.8.dylib'),
+            lib_dir.extend([
+                path.join(environ['RESOURCEPATH'], '..', 'Frameworks', 'libcrypto.dylib'),
+                path.join(environ['RESOURCEPATH'], '..', 'Frameworks', 'libcrypto.1.1.0.dylib'),
+                path.join(environ['RESOURCEPATH'], '..', 'Frameworks', 'libcrypto.1.0.2.dylib'),
+                path.join(environ['RESOURCEPATH'], '..', 'Frameworks', 'libcrypto.1.0.1.dylib'),
+                path.join(environ['RESOURCEPATH'], '..', 'Frameworks', 'libcrypto.1.0.0.dylib'),
+                path.join(environ['RESOURCEPATH'], '..', 'Frameworks', 'libcrypto.0.9.8.dylib'),
                 ])
         elif 'win32' in sys.platform or 'win64' in sys.platform:
-            libdir.append(path.join(sys._MEIPASS, 'libeay32.dll'))
+            lib_dir.append(path.join(sys._MEIPASS, 'libeay32.dll'))
         else:
-            libdir.extend([
+            lib_dir.extend([
                 path.join(sys._MEIPASS, 'libcrypto.so'),
                 path.join(sys._MEIPASS, 'libssl.so'),
                 path.join(sys._MEIPASS, 'libcrypto.so.1.1.0'),
@@ -528,19 +533,19 @@ def loadOpenSSL():
                 path.join(sys._MEIPASS, 'libssl.so.0.9.8'),
             ])
     if 'darwin' in sys.platform:
-        libdir.extend(['libcrypto.dylib', '/usr/local/opt/openssl/lib/libcrypto.dylib'])
+        lib_dir.extend(['libcrypto.dylib', '/usr/local/opt/openssl/lib/libcrypto.dylib'])
     elif 'win32' in sys.platform or 'win64' in sys.platform:
-        libdir.append('libeay32.dll')
+        lib_dir.append('libeay32.dll')
     else:
-        libdir.append('libcrypto.so')
-        libdir.append('libssl.so')
-        libdir.append('libcrypto.so.1.0.0')
-        libdir.append('libssl.so.1.0.0')
+        lib_dir.append('libcrypto.so')
+        lib_dir.append('libssl.so')
+        lib_dir.append('libcrypto.so.1.0.0')
+        lib_dir.append('libssl.so.1.0.0')
     if 'linux' in sys.platform or 'darwin' in sys.platform or 'bsd' in sys.platform:
-        libdir.append(find_library('ssl'))
+        lib_dir.append(find_library('ssl'))
     elif 'win32' in sys.platform or 'win64' in sys.platform:
-        libdir.append(find_library('libeay32'))
-    for library in libdir:
+        lib_dir.append(find_library('libeay32'))
+    for library in lib_dir:
         try:
             OpenSSL = _OpenSSL(library)
             return
@@ -548,4 +553,5 @@ def loadOpenSSL():
             pass
     raise Exception("Couldn't find and load the OpenSSL library. You must install it.")
 
-loadOpenSSL()
+
+load_open_ssl()

src/socks/__init__.py

@@ -31,6 +31,9 @@ for tunneling connections through SOCKS proxies.
 
 """
 
+import socket
+import struct
+
 """
 
 Minor modifications made by Christopher Gilbert (http://motomastyle.com/)
@@ -41,65 +44,82 @@ mainly to merge bug fixes found in Sourceforge
 
 """
 
-import socket
-import struct
-import sys
 
-PROXY_TYPE_SOCKS4 = 1
-PROXY_TYPE_SOCKS5 = 2
-PROXY_TYPE_HTTP = 3
+proxy_type_socks4 = 1
+proxy_type_socks5 = 2
+proxy_type_http = 3
+
+_default_proxy = None
+_org_socket = socket.socket
+
+
+class ProxyError(Exception):
+    pass
+
+
+class GeneralProxyError(ProxyError):
+    pass
 
-_defaultproxy = None
-_orgsocket = socket.socket
 
-class ProxyError(Exception): pass
-class GeneralProxyError(ProxyError): pass
-class Socks5AuthError(ProxyError): pass
-class Socks5Error(ProxyError): pass
-class Socks4Error(ProxyError): pass
-class HTTPError(ProxyError): pass
+class Socks5AuthError(ProxyError):
+    pass
+
+
+class Socks5Error(ProxyError):
+    pass
+
+
+class Socks4Error(ProxyError):
+    pass
+
+
+class HTTPError(ProxyError):
+    pass
+
 
 _generalerrors = ("success",
-    "invalid data",
-    "not connected",
-    "not available",
-    "bad proxy type",
-    "bad input",
-    "timed out",
-    "network unreachable",
-    "connection refused",
-    "host unreachable")
+                  "invalid data",
+                  "not connected",
+                  "not available",
+                  "bad proxy type",
+                  "bad input",
+                  "timed out",
+                  "network unreachable",
+                  "connection refused",
+                  "host unreachable")
 
 _socks5errors = ("succeeded",
-    "general SOCKS server failure",
-    "connection not allowed by ruleset",
-    "Network unreachable",
-    "Host unreachable",
-    "Connection refused",
-    "TTL expired",
-    "Command not supported",
-    "Address type not supported",
-    "Unknown error")
+                 "general SOCKS server failure",
+                 "connection not allowed by ruleset",
+                 "Network unreachable",
+                 "Host unreachable",
+                 "Connection refused",
+                 "TTL expired",
+                 "Command not supported",
+                 "Address type not supported",
+                 "Unknown error")
 
 _socks5autherrors = ("succeeded",
-    "authentication is required",
-    "all offered authentication methods were rejected",
-    "unknown username or invalid password",
-    "unknown error")
+                     "authentication is required",
+                     "all offered authentication methods were rejected",
+                     "unknown username or invalid password",
+                     "unknown error")
 
 _socks4errors = ("request granted",
-    "request rejected or failed",
-    "request rejected because SOCKS server cannot connect to identd on the client",
-    "request rejected because the client program and identd report different user-ids",
-    "unknown error")
+                 "request rejected or failed",
+                 "request rejected because SOCKS server cannot connect to identd on the client",
+                 "request rejected because the client program and identd report different user-ids",
+                 "unknown error")
+
 
 def setdefaultproxy(proxytype=None, addr=None, port=None, rdns=True, username=None, password=None):
     """setdefaultproxy(proxytype, addr[, port[, rdns[, username[, password]]]])
     Sets a default proxy which all further socksocket objects will use,
     unless explicitly changed.
     """
-    global _defaultproxy
-    _defaultproxy = (proxytype, addr, port, rdns, username, password)
+    global _default_proxy
+    _default_proxy = (proxytype, addr, port, rdns, username, password)
+
 
 def wrapmodule(module):
     """wrapmodule(module)
@@ -108,12 +128,13 @@ def wrapmodule(module):
     This will only work on modules that import socket directly into the namespace;
     most of the Python Standard Library falls into this category.
     """
-    if _defaultproxy != None:
-        module.socket.socket = socksocket
+    if _default_proxy is not None:
+        module.socket.socket = SockSocket
     else:
         raise GeneralProxyError((4, "no proxy specified"))
 
-class socksocket(socket.socket):
+
+class SockSocket(socket.socket):
     """socksocket([family[, type[, proto]]]) -> socket object
     Open a SOCKS enabled socket. The parameters are the same as
     those of the standard socket init. In order for SOCKS to work,
@@ -121,13 +142,13 @@ class socksocket(socket.socket):
     """
 
     def __init__(self, family=socket.AF_INET, type=socket.SOCK_STREAM, proto=0, _sock=None):
-        _orgsocket.__init__(self, family, type, proto, _sock)
-        if _defaultproxy != None:
-            self.__proxy = _defaultproxy
+        _org_socket.__init__(self, family, type, proto, _sock)
+        if _default_proxy is not None:
+            self.__proxy = _default_proxy
         else:
             self.__proxy = (None, None, None, None, None, None)
-        self.__proxysockname = None
-        self.__proxypeername = None
+        self.__proxy_sock_name = None
+        self.__proxy_peer_name = None
 
     def __recvall(self, count):
         """__recvall(count) -> data
@@ -139,8 +160,9 @@ class socksocket(socket.socket):
         except socket.timeout:
             raise GeneralProxyError((6, "timed out"))
         while len(data) < count:
-            d = self.recv(count-len(data))
-            if not d: raise GeneralProxyError((0, "connection closed unexpectedly"))
+            d = self.recv(count - len(data))
+            if not d:
+                raise GeneralProxyError((0, "connection closed unexpectedly"))
             data = data + d
         return data
 
@@ -181,7 +203,7 @@ class socksocket(socket.socket):
         Negotiates a connection through a SOCKS5 server.
         """
         # First we'll send the authentication packages we support.
-        if (self.__proxy[4]!=None) and (self.__proxy[5]!=None):
+        if self.__proxy[4] is not None and self.__proxy[5] is not None:
             # The username/password details were supplied to the
             # setproxy method so we support the USERNAME/PASSWORD
             # authentication (in addition to the standard none).
@@ -203,7 +225,10 @@ class socksocket(socket.socket):
         elif chosenauth[1:2] == chr(0x02).encode():
             # Okay, we need to perform a basic username/password
             # authentication.
-            self.sendall(chr(0x01).encode() + chr(len(self.__proxy[4])) + self.__proxy[4] + chr(len(self.__proxy[5])) + self.__proxy[5])
+            self.sendall(
+                chr(0x01).encode() + chr(len(self.__proxy[4])) + self.__proxy[4] + chr(
+                    len(self.__proxy[5])) + self.__proxy[5]
+            )
             authstat = self.__recvall(2)
             if authstat[0:1] != chr(0x01).encode():
                 # Bad response
@@ -250,7 +275,7 @@ class socksocket(socket.socket):
         elif resp[1:2] != chr(0x00).encode():
             # Connection failed
             self.close()
-            if ord(resp[1:2])<=8:
+            if ord(resp[1:2]) <= 8:
                 raise Socks5Error((ord(resp[1:2]), _socks5errors[ord(resp[1:2])]))
             else:
                 raise Socks5Error((9, _socks5errors[9]))
@@ -262,13 +287,13 @@ class socksocket(socket.socket):
             boundaddr = self.__recvall(ord(resp[4:5]))
         else:
             self.close()
-            raise GeneralProxyError((1,_generalerrors[1]))
+            raise GeneralProxyError((1, _generalerrors[1]))
         boundport = struct.unpack(">H", self.__recvall(2))[0]
-        self.__proxysockname = (boundaddr, boundport)
-        if ipaddr != None:
-            self.__proxypeername = (socket.inet_ntoa(ipaddr), destport)
+        self.__proxy_sock_name = (boundaddr, boundport)
+        if ipaddr:
+            self.__proxy_peer_name = (socket.inet_ntoa(ipaddr), destport)
         else:
-            self.__proxypeername = (destaddr, destport)
+            self.__proxy_peer_name = (destaddr, destport)
 
     def __resolvesocks5(self, host):
         # Now we can request the actual connection
@@ -277,7 +302,7 @@ class socksocket(socket.socket):
         req = req + struct.pack(">H", 8444)
         self.sendall(req)
         # Get the response
-        ip = ""
+
         resp = self.__recvall(4)
         if resp[0:1] != chr(0x05).encode():
             self.close()
@@ -285,7 +310,7 @@ class socksocket(socket.socket):
         elif resp[1:2] != chr(0x00).encode():
             # Connection failed
             self.close()
-            if ord(resp[1:2])<=8:
+            if ord(resp[1:2]) <= 8:
                 raise Socks5Error((ord(resp[1:2]), _socks5errors[ord(resp[1:2])]))
             else:
                 raise Socks5Error((9, _socks5errors[9]))
@@ -297,65 +322,64 @@ class socksocket(socket.socket):
             ip = self.__recvall(ord(resp[4:5]))
         else:
             self.close()
-            raise GeneralProxyError((1,_generalerrors[1]))
-        boundport = struct.unpack(">H", self.__recvall(2))[0]
+            raise GeneralProxyError((1, _generalerrors[1]))
         return ip
 
     def getproxysockname(self):
         """getsockname() -> address info
         Returns the bound IP address and port number at the proxy.
         """
-        return self.__proxysockname
+        return self.__proxy_sock_name
 
     def getproxypeername(self):
         """getproxypeername() -> address info
         Returns the IP and port number of the proxy.
         """
-        return _orgsocket.getpeername(self)
+        return _org_socket.getpeername(self)
 
     def getpeername(self):
         """getpeername() -> address info
         Returns the IP address and port number of the destination
         machine (note: getproxypeername returns the proxy)
         """
-        return self.__proxypeername
+        return self.__proxy_peer_name
 
     def getproxytype(self):
         return self.__proxy[0]
 
-    def __negotiatesocks4(self,destaddr,destport):
+    def __negotiatesocks4(self, destination_address, destination_port):
         """__negotiatesocks4(self,destaddr,destport)
         Negotiates a connection through a SOCKS4 server.
         """
         # Check if the destination address provided is an IP address
         rmtrslv = False
         try:
-            ipaddr = socket.inet_aton(destaddr)
+            ipaddr = socket.inet_aton(destination_address)
         except socket.error:
             # It's a DNS name. Check where it should be resolved.
             if self.__proxy[3]:
                 ipaddr = struct.pack("BBBB", 0x00, 0x00, 0x00, 0x01)
                 rmtrslv = True
             else:
-                ipaddr = socket.inet_aton(socket.gethostbyname(destaddr))
+                ipaddr = socket.inet_aton(socket.gethostbyname(destination_address))
         # Construct the request packet
-        req = struct.pack(">BBH", 0x04, 0x01, destport) + ipaddr
+        req = struct.pack(">BBH", 0x04, 0x01, destination_port) + ipaddr
         # The username parameter is considered userid for SOCKS4
-        if self.__proxy[4] != None:
+        if self.__proxy[4] is not None:
             req = req + self.__proxy[4]
         req = req + chr(0x00).encode()
         # DNS name if remote resolving is required
         # NOTE: This is actually an extension to the SOCKS4 protocol
         # called SOCKS4A and may not be supported in all cases.
         if rmtrslv:
-            req = req + destaddr + chr(0x00).encode()
+            req = req + destination_address + chr(0x00).encode()
         self.sendall(req)
         # Get the response from the server
         resp = self.__recvall(8)
         if resp[0:1] != chr(0x00).encode():
             # Bad data
             self.close()
-            raise GeneralProxyError((1,_generalerrors[1]))
+            raise GeneralProxyError((1, _generalerrors[1]))
         if resp[1:2] != chr(0x5A).encode():
             # Server returned an error
             self.close()
@@ -365,44 +389,48 @@ class socksocket(socket.socket):
             else:
                 raise Socks4Error((94, _socks4errors[4]))
         # Get the bound address/port
-        self.__proxysockname = (socket.inet_ntoa(resp[4:]), struct.unpack(">H", resp[2:4])[0])
-        if rmtrslv != None:
-            self.__proxypeername = (socket.inet_ntoa(ipaddr), destport)
+        self.__proxy_sock_name = (socket.inet_ntoa(resp[4:]), struct.unpack(">H", resp[2:4])[0])
+        if rmtrslv is not None:
+            self.__proxy_peer_name = (socket.inet_ntoa(ipaddr), destination_port)
         else:
-            self.__proxypeername = (destaddr, destport)
+            self.__proxy_peer_name = (destination_address, destination_port)
 
-    def __negotiatehttp(self, destaddr, destport):
+    def __negotiatehttp(self, destination_address, destination_port):
         """__negotiatehttp(self,destaddr,destport)
         Negotiates a connection through an HTTP server.
         """
         # If we need to resolve locally, we do this now
         if not self.__proxy[3]:
-            addr = socket.gethostbyname(destaddr)
+            addr = socket.gethostbyname(destination_address)
         else:
-            addr = destaddr
-        self.sendall(("CONNECT " + addr + ":" + str(destport) + " HTTP/1.1\r\n" + "Host: " + destaddr + "\r\n\r\n").encode())
+            addr = destination_address
+        self.sendall(
+            ("CONNECT {} : {} HTTP/1.1\r\n Host: {} \r\n\r\n".format(
+                addr, str(destination_port), destination_address)).encode())
         # We read the response until we get the string "\r\n\r\n"
         resp = self.recv(1)
         while resp.find("\r\n\r\n".encode()) == -1:
             resp = resp + self.recv(1)
         # We just need the first line to check if the connection
         # was successful
-        statusline = resp.splitlines()[0].split(" ".encode(), 2)
-        if statusline[0] not in ("HTTP/1.0".encode(), "HTTP/1.1".encode()):
+        status_line = resp.splitlines()[0].split(" ".encode(), 2)
+
+        if status_line[0] not in ("HTTP/1.0".encode(), "HTTP/1.1".encode()):
             self.close()
             raise GeneralProxyError((1, _generalerrors[1]))
         try:
-            statuscode = int(statusline[1])
+            statuscode = int(status_line[1])
         except ValueError:
             self.close()
             raise GeneralProxyError((1, _generalerrors[1]))
+
         if statuscode != 200:
             self.close()
-            raise HTTPError((statuscode, statusline[2]))
-        self.__proxysockname = ("0.0.0.0", 0)
-        self.__proxypeername = (addr, destport)
+            raise HTTPError((statuscode, status_line[2]))
+        self.__proxy_sock_name = ("0.0.0.0", 0)
+        self.__proxy_peer_name = (addr, destination_port)
 
-    def connect(self, destpair):
+    def connect(self, destination_pair):
         """connect(self, despair)
         Connects to the specified destination through a proxy.
         destpar - A tuple of the IP/DNS address and the port number.
@@ -410,15 +438,14 @@ class socksocket(socket.socket):
         To select the proxy server use setproxy().
         """
         # Do a minimal input check first
-        if (not type(destpair) in (list,tuple)) or (len(destpair) < 2) or (type(destpair[0]) != type('')) or (type(destpair[1]) != int):
+        if (not isinstance(destination_pair, (list, tuple))) or (len(destination_pair) < 2) \
+                or not isinstance(destination_pair[0], str) or not isinstance(destination_pair[1], int):
             raise GeneralProxyError((5, _generalerrors[5]))
-        if self.__proxy[0] == PROXY_TYPE_SOCKS5:
-            if self.__proxy[2] != None:
-                portnum = self.__proxy[2]
-            else:
-                portnum = 1080
+
+        if self.__proxy[0] == proxy_type_socks5:
+            port_number = self.__proxy[2] if self.__proxy[2] is not None else 1080
             try:
-                _orgsocket.connect(self, (self.__proxy[1], portnum))
+                _org_socket.connect(self, (self.__proxy[1], port_number))
             except socket.error as e:
                 # ENETUNREACH, WSAENETUNREACH
                 if e[0] in [101, 10051]:
@@ -431,21 +458,17 @@ class socksocket(socket.socket):
                     raise GeneralProxyError((9, _generalerrors[9]))
                 raise
             self.__negotiatesocks5()
-            self.__connectsocks5(destpair[0], destpair[1])
-        elif self.__proxy[0] == PROXY_TYPE_SOCKS4:
-            if self.__proxy[2] != None:
-                portnum = self.__proxy[2]
-            else:
-                portnum = 1080
-            _orgsocket.connect(self,(self.__proxy[1], portnum))
-            self.__negotiatesocks4(destpair[0], destpair[1])
-        elif self.__proxy[0] == PROXY_TYPE_HTTP:
-            if self.__proxy[2] != None:
-                portnum = self.__proxy[2]
-            else:
-                portnum = 8080
+            self.__connectsocks5(destination_pair[0], destination_pair[1])
+
+        elif self.__proxy[0] == proxy_type_socks4:
+            port_number = self.__proxy[2] if self.__proxy[2] is not None else 1080
+            _org_socket.connect(self, (self.__proxy[1], port_number))
+            self.__negotiatesocks4(destination_pair[0], destination_pair[1])
+
+        elif self.__proxy[0] == proxy_type_http:
+            port_number = self.__proxy[2] if self.__proxy[2] is not None else 8080
             try:
-                _orgsocket.connect(self,(self.__proxy[1], portnum))
+                _org_socket.connect(self, (self.__proxy[1], port_number))
             except socket.error as e:
                 # ENETUNREACH, WSAENETUNREACH
                 if e[0] in [101, 10051]:
@@ -457,19 +480,17 @@ class socksocket(socket.socket):
                 if e[0] in [113, 10065]:
                     raise GeneralProxyError((9, _generalerrors[9]))
                 raise
-            self.__negotiatehttp(destpair[0], destpair[1])
-        elif self.__proxy[0] == None:
-            _orgsocket.connect(self, (destpair[0], destpair[1]))
+            self.__negotiatehttp(destination_pair[0], destination_pair[1])
+
+        elif not self.__proxy[0]:
+            _org_socket.connect(self, (destination_pair[0], destination_pair[1]))
         else:
             raise GeneralProxyError((4, _generalerrors[4]))
 
     def resolve(self, host):
-        if self.__proxy[0] == PROXY_TYPE_SOCKS5:
-            if self.__proxy[2] != None:
-                portnum = self.__proxy[2]
-            else:
-                portnum = 1080
-            _orgsocket.connect(self, (self.__proxy[1], portnum))
+        if self.__proxy[0] == proxy_type_socks5:
+            port_number = self.__proxy[2] if self.__proxy[2] is not None else 1080
+            _org_socket.connect(self, (self.__proxy[1], port_number))
             self.__negotiatesocks5()
             return self.__resolvesocks5(host)
         else: