180 lines
6.4 KiB
Python
180 lines
6.4 KiB
Python
# Copyright 2014 OpenStack Foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""oAuthlib request validator."""
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from oslo_log import log
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import six
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from keystone.common import dependency
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from keystone import exception
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from keystone.oauth1 import core as oauth1
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METHOD_NAME = 'oauth_validator'
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LOG = log.getLogger(__name__)
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@dependency.requires('oauth_api')
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class OAuthValidator(oauth1.RequestValidator):
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# TODO(mhu) set as option probably?
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@property
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def enforce_ssl(self):
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return False
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@property
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def safe_characters(self):
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# oauth tokens are generated from a uuid hex value
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return set("abcdef0123456789")
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def _check_token(self, token):
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# generic token verification when they're obtained from a uuid hex
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return (set(token) <= self.safe_characters and
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len(token) == 32)
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def check_client_key(self, client_key):
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return self._check_token(client_key)
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def check_request_token(self, request_token):
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return self._check_token(request_token)
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def check_access_token(self, access_token):
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return self._check_token(access_token)
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def check_nonce(self, nonce):
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# Assuming length is not a concern
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return set(nonce) <= self.safe_characters
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def check_verifier(self, verifier):
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return (all(i in oauth1.VERIFIER_CHARS for i in verifier) and
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len(verifier) == 8)
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def get_client_secret(self, client_key, request):
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client = self.oauth_api.get_consumer_with_secret(client_key)
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return client['secret']
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def get_request_token_secret(self, client_key, token, request):
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token_ref = self.oauth_api.get_request_token(token)
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return token_ref['request_secret']
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def get_access_token_secret(self, client_key, token, request):
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access_token = self.oauth_api.get_access_token(token)
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return access_token['access_secret']
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def get_default_realms(self, client_key, request):
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# realms weren't implemented with the previous library
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return []
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def get_realms(self, token, request):
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return []
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def get_redirect_uri(self, token, request):
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# OOB (out of band) is supposed to be the default value to use
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return 'oob'
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def get_rsa_key(self, client_key, request):
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# HMAC signing is used, so return a dummy value
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return ''
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def invalidate_request_token(self, client_key, request_token, request):
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# this method is invoked when an access token is generated out of a
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# request token, to make sure that request token cannot be consumed
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# anymore. This is done in the backend, so we do nothing here.
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pass
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def validate_client_key(self, client_key, request):
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try:
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return self.oauth_api.get_consumer(client_key) is not None
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except exception.NotFound:
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return False
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def validate_request_token(self, client_key, token, request):
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try:
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return self.oauth_api.get_request_token(token) is not None
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except exception.NotFound:
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return False
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def validate_access_token(self, client_key, token, request):
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try:
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return self.oauth_api.get_access_token(token) is not None
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except exception.NotFound:
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return False
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def validate_timestamp_and_nonce(self,
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client_key,
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timestamp,
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nonce,
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request,
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request_token=None,
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access_token=None):
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return True
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def validate_redirect_uri(self, client_key, redirect_uri, request):
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# we expect OOB, we don't really care
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return True
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def validate_requested_realms(self, client_key, realms, request):
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# realms are not used
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return True
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def validate_realms(self,
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client_key,
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token,
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request,
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uri=None,
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realms=None):
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return True
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def validate_verifier(self, client_key, token, verifier, request):
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try:
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req_token = self.oauth_api.get_request_token(token)
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return req_token['verifier'] == verifier
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except exception.NotFound:
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return False
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def verify_request_token(self, token, request):
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# there aren't strong expectations on the request token format
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return isinstance(token, six.string_types)
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def verify_realms(self, token, realms, request):
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return True
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# The following save_XXX methods are called to create tokens. I chose to
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# keep the original logic, but the comments below show how that could be
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# implemented. The real implementation logic is in the backend.
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def save_access_token(self, token, request):
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pass
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# token_duration = CONF.oauth1.request_token_duration
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# request_token_id = request.client_key
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# self.oauth_api.create_access_token(request_token_id,
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# token_duration,
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# token["oauth_token"],
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# token["oauth_token_secret"])
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def save_request_token(self, token, request):
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pass
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# project_id = request.headers.get('Requested-Project-Id')
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# token_duration = CONF.oauth1.request_token_duration
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# self.oauth_api.create_request_token(request.client_key,
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# project_id,
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# token_duration,
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# token["oauth_token"],
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# token["oauth_token_secret"])
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def save_verifier(self, token, verifier, request):
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# keep the old logic for this, as it is done in two steps and requires
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# information that the request validator has no access to
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pass
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