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Diffstat (limited to 'game/python-extra/oauthlib/oauth1/rfc5849/endpoints/resource.py')
| -rw-r--r-- | game/python-extra/oauthlib/oauth1/rfc5849/endpoints/resource.py | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/game/python-extra/oauthlib/oauth1/rfc5849/endpoints/resource.py b/game/python-extra/oauthlib/oauth1/rfc5849/endpoints/resource.py new file mode 100644 index 0000000..8641152 --- /dev/null +++ b/game/python-extra/oauthlib/oauth1/rfc5849/endpoints/resource.py @@ -0,0 +1,163 @@ +# -*- coding: utf-8 -*- +""" +oauthlib.oauth1.rfc5849.endpoints.resource +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +This module is an implementation of the resource protection provider logic of +OAuth 1.0 RFC 5849. +""" +import logging + +from .. import errors +from .base import BaseEndpoint + +log = logging.getLogger(__name__) + + +class ResourceEndpoint(BaseEndpoint): + + """An endpoint responsible for protecting resources. + + Typical use is to instantiate with a request validator and invoke the + ``validate_protected_resource_request`` in a decorator around a view + function. If the request is valid, invoke and return the response of the + view. If invalid create and return an error response directly from the + decorator. + + See :doc:`/oauth1/validator` for details on which validator methods to implement + for this endpoint. + + An example decorator:: + + from functools import wraps + from your_validator import your_validator + from oauthlib.oauth1 import ResourceEndpoint + endpoint = ResourceEndpoint(your_validator) + + def require_oauth(realms=None): + def decorator(f): + @wraps(f) + def wrapper(request, *args, **kwargs): + v, r = provider.validate_protected_resource_request( + request.url, + http_method=request.method, + body=request.data, + headers=request.headers, + realms=realms or []) + if v: + return f(*args, **kwargs) + else: + return abort(403) + """ + + def validate_protected_resource_request(self, uri, http_method='GET', + body=None, headers=None, realms=None): + """Create a request token response, with a new request token if valid. + + :param uri: The full URI of the token request. + :param http_method: A valid HTTP verb, i.e. GET, POST, PUT, HEAD, etc. + :param body: The request body as a string. + :param headers: The request headers as a dict. + :param realms: A list of realms the resource is protected under. + This will be supplied to the ``validate_realms`` + method of the request validator. + :returns: A tuple of 2 elements. + 1. True if valid, False otherwise. + 2. An oauthlib.common.Request object. + """ + try: + request = self._create_request(uri, http_method, body, headers) + except errors.OAuth1Error: + return False, None + + try: + self._check_transport_security(request) + self._check_mandatory_parameters(request) + except errors.OAuth1Error: + return False, request + + if not request.resource_owner_key: + return False, request + + if not self.request_validator.check_access_token( + request.resource_owner_key): + return False, request + + if not self.request_validator.validate_timestamp_and_nonce( + request.client_key, request.timestamp, request.nonce, request, + access_token=request.resource_owner_key): + return False, request + + # The server SHOULD return a 401 (Unauthorized) status code when + # receiving a request with invalid client credentials. + # Note: This is postponed in order to avoid timing attacks, instead + # a dummy client is assigned and used to maintain near constant + # time request verification. + # + # Note that early exit would enable client enumeration + valid_client = self.request_validator.validate_client_key( + request.client_key, request) + if not valid_client: + request.client_key = self.request_validator.dummy_client + + # The server SHOULD return a 401 (Unauthorized) status code when + # receiving a request with invalid or expired token. + # Note: This is postponed in order to avoid timing attacks, instead + # a dummy token is assigned and used to maintain near constant + # time request verification. + # + # Note that early exit would enable resource owner enumeration + valid_resource_owner = self.request_validator.validate_access_token( + request.client_key, request.resource_owner_key, request) + if not valid_resource_owner: + request.resource_owner_key = self.request_validator.dummy_access_token + + # Note that `realm`_ is only used in authorization headers and how + # it should be interpreted is not included in the OAuth spec. + # However they could be seen as a scope or realm to which the + # client has access and as such every client should be checked + # to ensure it is authorized access to that scope or realm. + # .. _`realm`: https://tools.ietf.org/html/rfc2617#section-1.2 + # + # Note that early exit would enable client realm access enumeration. + # + # The require_realm indicates this is the first step in the OAuth + # workflow where a client requests access to a specific realm. + # This first step (obtaining request token) need not require a realm + # and can then be identified by checking the require_resource_owner + # flag and absence of realm. + # + # Clients obtaining an access token will not supply a realm and it will + # not be checked. Instead the previously requested realm should be + # transferred from the request token to the access token. + # + # Access to protected resources will always validate the realm but note + # that the realm is now tied to the access token and not provided by + # the client. + valid_realm = self.request_validator.validate_realms(request.client_key, + request.resource_owner_key, request, uri=request.uri, + realms=realms) + + valid_signature = self._check_signature(request) + + # log the results to the validator_log + # this lets us handle internal reporting and analysis + request.validator_log['client'] = valid_client + request.validator_log['resource_owner'] = valid_resource_owner + request.validator_log['realm'] = valid_realm + request.validator_log['signature'] = valid_signature + + # We delay checking validity until the very end, using dummy values for + # calculations and fetching secrets/keys to ensure the flow of every + # request remains almost identical regardless of whether valid values + # have been supplied. This ensures near constant time execution and + # prevents malicious users from guessing sensitive information + v = all((valid_client, valid_resource_owner, valid_realm, + valid_signature)) + if not v: + log.info("[Failure] request verification failed.") + log.info("Valid client: %s", valid_client) + log.info("Valid token: %s", valid_resource_owner) + log.info("Valid realm: %s", valid_realm) + log.info("Valid signature: %s", valid_signature) + return v, request |