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File Name : api_jwt.py

import json
from calendar import timegm
from collections.abc import Iterable, Mapping
from datetime import datetime, timedelta
from typing import Any, Dict, List, Optional, Type, Union

from . import api_jws
from .exceptions import (
    DecodeError,
    ExpiredSignatureError,
    ImmatureSignatureError,
    InvalidAudienceError,
    InvalidIssuedAtError,
    InvalidIssuerError,
    MissingRequiredClaimError,
)

class PyJWT:
    def __init__(self, options=None):
        if options is None:
            options = {}
        self.options = {**self._get_default_options(), **options}

@staticmethod
    def _get_default_options() -> Dict[str, Union[bool, List[str]]]:
        return {
            "verify_signature": True,
            "verify_exp": True,
            "verify_nbf": True,
            "verify_iat": True,
            "verify_aud": True,
            "verify_iss": True,
            "require": [],
        }

def encode(
        self,
        payload: Dict[str, Any],
        key: str,
        algorithm: str = "HS256",
        headers: Optional[Dict] = None,
        json_encoder: Optional[Type[json.JSONEncoder]] = None,
    ) -> str:
        # Check that we get a mapping
        if not isinstance(payload, Mapping):
            raise TypeError(
                "Expecting a mapping object, as JWT only supports "
                "JSON objects as payloads."
            )

# Payload
        payload = payload.copy()
        for time_claim in ["exp", "iat", "nbf"]:
            # Convert datetime to a intDate value in known time-format claims
            if isinstance(payload.get(time_claim), datetime):
                payload[time_claim] = timegm(payload[time_claim].utctimetuple())

json_payload = json.dumps(
            payload, separators=(",", ":"), cls=json_encoder
        ).encode("utf-8")

return api_jws.encode(json_payload, key, algorithm, headers, json_encoder)

def decode_complete(
        self,
        jwt: str,
        key: str = "",
        algorithms: List[str] = None,
        options: Dict = None,
        **kwargs,
    ) -> Dict[str, Any]:
        if options is None:
            options = {"verify_signature": True}
        else:
            options.setdefault("verify_signature", True)

if not options["verify_signature"]:
            options.setdefault("verify_exp", False)
            options.setdefault("verify_nbf", False)
            options.setdefault("verify_iat", False)
            options.setdefault("verify_aud", False)
            options.setdefault("verify_iss", False)

if options["verify_signature"] and not algorithms:
            raise DecodeError(
                'It is required that you pass in a value for the "algorithms" argument when calling decode().'
            )

decoded = api_jws.decode_complete(
            jwt,
            key=key,
            algorithms=algorithms,
            options=options,
            **kwargs,
        )

try:
            payload = json.loads(decoded["payload"])
        except ValueError as e:
            raise DecodeError("Invalid payload string: %s" % e)
        if not isinstance(payload, dict):
            raise DecodeError("Invalid payload string: must be a json object")

merged_options = {**self.options, **options}
        self._validate_claims(payload, merged_options, **kwargs)

decoded["payload"] = payload
        return decoded

def decode(
        self,
        jwt: str,
        key: str = "",
        algorithms: List[str] = None,
        options: Dict = None,
        **kwargs,
    ) -> Dict[str, Any]:
        decoded = self.decode_complete(jwt, key, algorithms, options, **kwargs)
        return decoded["payload"]

def _validate_claims(
        self, payload, options, audience=None, issuer=None, leeway=0, **kwargs
    ):
        if isinstance(leeway, timedelta):
            leeway = leeway.total_seconds()

if not isinstance(audience, (bytes, str, type(None), Iterable)):
            raise TypeError("audience must be a string, iterable, or None")

self._validate_required_claims(payload, options)

now = timegm(datetime.utcnow().utctimetuple())

if "iat" in payload and options["verify_iat"]:
            self._validate_iat(payload, now, leeway)

if "nbf" in payload and options["verify_nbf"]:
            self._validate_nbf(payload, now, leeway)

if "exp" in payload and options["verify_exp"]:
            self._validate_exp(payload, now, leeway)

if options["verify_iss"]:
            self._validate_iss(payload, issuer)

if options["verify_aud"]:
            self._validate_aud(payload, audience)

def _validate_required_claims(self, payload, options):
        for claim in options["require"]:
            if payload.get(claim) is None:
                raise MissingRequiredClaimError(claim)

def _validate_iat(self, payload, now, leeway):
        try:
            int(payload["iat"])
        except ValueError:
            raise InvalidIssuedAtError("Issued At claim (iat) must be an integer.")

def _validate_nbf(self, payload, now, leeway):
        try:
            nbf = int(payload["nbf"])
        except ValueError:
            raise DecodeError("Not Before claim (nbf) must be an integer.")

if nbf > (now + leeway):
            raise ImmatureSignatureError("The token is not yet valid (nbf)")

def _validate_exp(self, payload, now, leeway):
        try:
            exp = int(payload["exp"])
        except ValueError:
            raise DecodeError("Expiration Time claim (exp) must be an" " integer.")

if exp < (now - leeway):
            raise ExpiredSignatureError("Signature has expired")

def _validate_aud(self, payload, audience):
        if audience is None and "aud" not in payload:
            return

if audience is not None and "aud" not in payload:
            # Application specified an audience, but it could not be
            # verified since the token does not contain a claim.
            raise MissingRequiredClaimError("aud")

if audience is None and "aud" in payload:
            # Application did not specify an audience, but
            # the token has the 'aud' claim
            raise InvalidAudienceError("Invalid audience")

audience_claims = payload["aud"]

if isinstance(audience_claims, str):
            audience_claims = [audience_claims]
        if not isinstance(audience_claims, list):
            raise InvalidAudienceError("Invalid claim format in token")
        if any(not isinstance(c, str) for c in audience_claims):
            raise InvalidAudienceError("Invalid claim format in token")

if isinstance(audience, str):
            audience = [audience]

if not any(aud in audience_claims for aud in audience):
            raise InvalidAudienceError("Invalid audience")

def _validate_iss(self, payload, issuer):
        if issuer is None:
            return

if "iss" not in payload:
            raise MissingRequiredClaimError("iss")

if payload["iss"] != issuer:
            raise InvalidIssuerError("Invalid issuer")

_jwt_global_obj = PyJWT()
encode = _jwt_global_obj.encode
decode_complete = _jwt_global_obj.decode_complete
decode = _jwt_global_obj.decode

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2024-08-14 01:08:24
..	dir	-	root/root	0755	2024-08-14 01:08:25
__pycache__	dir	-	root/root	0755	2024-08-14 01:08:24
__init__.py	text/x-python	1.52 KB	root/root	0644	2021-04-28 11:59:20
algorithms.py	text/x-python	20.97 KB	root/root	0644	2021-04-28 11:43:48
api_jwk.py	text/x-python	2.87 KB	root/root	0644	2021-04-28 11:23:40
api_jws.py	text/x-python	7.65 KB	root/root	0644	2020-12-21 04:55:46
api_jwt.py	text/x-python	7.13 KB	root/root	0644	2021-04-28 11:23:40
exceptions.py	text/x-python	965 B	root/root	0644	2020-08-24 04:22:55
help.py	text/x-python	1.57 KB	root/root	0644	2020-12-21 04:55:46
jwks_client.py	text/x-python	1.88 KB	root/root	0644	2021-04-28 11:23:40
py.typed	inode/x-empty	0 B	root/root	0644	2020-12-20 12:01:37
utils.py	text/x-python	2.45 KB	root/root	0644	2020-12-21 04:55:46

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