38 lines
975 B
Python
38 lines
975 B
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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"""Main entry point into the S3 Credentials service.
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TODO-DOCS
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"""
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import base64
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import hmac
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from hashlib import sha1
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from keystone import config
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from keystone.common import wsgi
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from keystone.contrib import ec2
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CONF = config.CONF
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class S3Extension(wsgi.ExtensionRouter):
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def add_routes(self, mapper):
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controller = S3Controller()
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# validation
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mapper.connect('/s3tokens',
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controller=controller,
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action='authenticate',
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conditions=dict(method=['POST']))
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class S3Controller(ec2.Ec2Controller):
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def check_signature(self, creds_ref, credentials):
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msg = base64.urlsafe_b64decode(str(credentials['token']))
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key = str(creds_ref['secret'])
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signed = base64.encodestring(hmac.new(key, msg, sha1).digest()).strip()
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if credentials['signature'] != signed:
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raise Exception('Not Authorized')
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