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Version Shell : 1.0 (Release candidate)

Author : FierzaXploit/Mr.MF33

PATH : /lib/python3/dist-packages/jwt/

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import binascii
import json
import warnings
try:
    # import required by mypy to perform type checking, not used for normal execution
    from typing import Callable, Dict, List, Optional, Union # NOQA
except ImportError:
    pass

from .algorithms import (
    Algorithm, get_default_algorithms, has_crypto, requires_cryptography  # NOQA
)
from .compat import Mapping, binary_type, string_types, text_type
from .exceptions import (
    DecodeError, InvalidAlgorithmError, InvalidSignatureError,
    InvalidTokenError
)
from .utils import base64url_decode, base64url_encode, force_bytes, merge_dict

class PyJWS(object):
    header_typ = 'JWT'

def __init__(self, algorithms=None, options=None):
        self._algorithms = get_default_algorithms()
        self._valid_algs = (set(algorithms) if algorithms is not None
                            else set(self._algorithms))

# Remove algorithms that aren't on the whitelist
        for key in list(self._algorithms.keys()):
            if key not in self._valid_algs:
                del self._algorithms[key]

if not options:
            options = {}

self.options = merge_dict(self._get_default_options(), options)

@staticmethod
    def _get_default_options():
        return {
            'verify_signature': True
        }

def register_algorithm(self, alg_id, alg_obj):
        """
        Registers a new Algorithm for use when creating and verifying tokens.
        """
        if alg_id in self._algorithms:
            raise ValueError('Algorithm already has a handler.')

if not isinstance(alg_obj, Algorithm):
            raise TypeError('Object is not of type `Algorithm`')

self._algorithms[alg_id] = alg_obj
        self._valid_algs.add(alg_id)

def unregister_algorithm(self, alg_id):
        """
        Unregisters an Algorithm for use when creating and verifying tokens
        Throws KeyError if algorithm is not registered.
        """
        if alg_id not in self._algorithms:
            raise KeyError('The specified algorithm could not be removed'
                           ' because it is not registered.')

del self._algorithms[alg_id]
        self._valid_algs.remove(alg_id)

def get_algorithms(self):
        """
        Returns a list of supported values for the 'alg' parameter.
        """
        return list(self._valid_algs)

def encode(self,
               payload,  # type: Union[Dict, bytes]
               key,  # type: str
               algorithm='HS256',  # type: str
               headers=None,  # type: Optional[Dict]
               json_encoder=None  # type: Optional[Callable]
               ):
        segments = []

if algorithm is None:
            algorithm = 'none'

if algorithm not in self._valid_algs:
            pass

# Header
        header = {'typ': self.header_typ, 'alg': algorithm}

if headers:
            self._validate_headers(headers)
            header.update(headers)

json_header = force_bytes(
            json.dumps(
                header,
                separators=(',', ':'),
                cls=json_encoder
            )
        )

segments.append(base64url_encode(json_header))
        segments.append(base64url_encode(payload))

# Segments
        signing_input = b'.'.join(segments)
        try:
            alg_obj = self._algorithms[algorithm]
            key = alg_obj.prepare_key(key)
            signature = alg_obj.sign(signing_input, key)

except KeyError:
            if not has_crypto and algorithm in requires_cryptography:
                raise NotImplementedError(
                    "Algorithm '%s' could not be found. Do you have cryptography "
                    "installed?" % algorithm
                )
            else:
                raise NotImplementedError('Algorithm not supported')

segments.append(base64url_encode(signature))

return b'.'.join(segments)

def decode(self,
               jwt,  # type: str
               key='',   # type: str
               verify=True,  # type: bool
               algorithms=None,  # type: List[str]
               options=None,  # type: Dict
               **kwargs):

merged_options = merge_dict(self.options, options)
        verify_signature = merged_options['verify_signature']

if verify_signature and not algorithms:
            warnings.warn(
                'It is strongly recommended that you pass in a ' +
                'value for the "algorithms" argument when calling decode(). ' +
                'This argument will be mandatory in a future version.',
                DeprecationWarning
            )

payload, signing_input, header, signature = self._load(jwt)

if not verify:
            warnings.warn('The verify parameter is deprecated. '
                          'Please use verify_signature in options instead.',
                          DeprecationWarning, stacklevel=2)
        elif verify_signature:
            self._verify_signature(payload, signing_input, header, signature,
                                   key, algorithms)

return payload

def get_unverified_header(self, jwt):
        """Returns back the JWT header parameters as a dict()

Note: The signature is not verified so the header parameters
        should not be fully trusted until signature verification is complete
        """
        headers = self._load(jwt)[2]
        self._validate_headers(headers)

return headers

def _load(self, jwt):
        if isinstance(jwt, text_type):
            jwt = jwt.encode('utf-8')

if not issubclass(type(jwt), binary_type):
            raise DecodeError("Invalid token type. Token must be a {0}".format(
                binary_type))

try:
            signing_input, crypto_segment = jwt.rsplit(b'.', 1)
            header_segment, payload_segment = signing_input.split(b'.', 1)
        except ValueError:
            raise DecodeError('Not enough segments')

try:
            header_data = base64url_decode(header_segment)
        except (TypeError, binascii.Error):
            raise DecodeError('Invalid header padding')

try:
            header = json.loads(header_data.decode('utf-8'))
        except ValueError as e:
            raise DecodeError('Invalid header string: %s' % e)

if not isinstance(header, Mapping):
            raise DecodeError('Invalid header string: must be a json object')

try:
            payload = base64url_decode(payload_segment)
        except (TypeError, binascii.Error):
            raise DecodeError('Invalid payload padding')

try:
            signature = base64url_decode(crypto_segment)
        except (TypeError, binascii.Error):
            raise DecodeError('Invalid crypto padding')

return (payload, signing_input, header, signature)

def _verify_signature(self, payload, signing_input, header, signature,
                          key='', algorithms=None):

alg = header.get('alg')

if algorithms is not None and alg not in algorithms:
            raise InvalidAlgorithmError('The specified alg value is not allowed')

try:
            alg_obj = self._algorithms[alg]
            key = alg_obj.prepare_key(key)

if not alg_obj.verify(signing_input, key, signature):
                raise InvalidSignatureError('Signature verification failed')

except KeyError:
            raise InvalidAlgorithmError('Algorithm not supported')

def _validate_headers(self, headers):
        if 'kid' in headers:
            self._validate_kid(headers['kid'])

def _validate_kid(self, kid):
        if not isinstance(kid, string_types):
            raise InvalidTokenError('Key ID header parameter must be a string')

_jws_global_obj = PyJWS()
encode = _jws_global_obj.encode
decode = _jws_global_obj.decode
register_algorithm = _jws_global_obj.register_algorithm
unregister_algorithm = _jws_global_obj.unregister_algorithm
get_unverified_header = _jws_global_obj.get_unverified_header

Type	Name	options
	__pycache__
	contrib
	__init__.py
	__main__.py
	__pycache__
	algorithms.py
	api_jws.py
	api_jwt.py
	compat.py
	contrib
	exceptions.py
	help.py
	utils.py