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# Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"). You
# may not use this file except in compliance with the License. A copy of
# the License is located at
#
# http://aws.amazon.com/apache2.0/
#
# or in the "license" file accompanying this file. This file is
# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
# ANY KIND, either express or implied. See the License for the specific
# language governing permissions and limitations under the License.
from datetime import datetime
import re
import mock
from tests import BaseSessionTest
from tests import temporary_file
from tests import assert_url_equal
from tests import ClientHTTPStubber
from botocore.stub import Stubber
_V4_SIGNING_REGION_REGEX = re.compile(
r'AWS4-HMAC-SHA256 '
r'Credential=\w+/\d+/(?P<signing_region>[a-z0-9-]+)/'
)
class TestSTSPresignedUrl(BaseSessionTest):
def setUp(self):
super(TestSTSPresignedUrl, self).setUp()
self.client = self.session.create_client('sts', 'us-west-2')
# Makes sure that no requests will go through
self.stubber = Stubber(self.client)
self.stubber.activate()
def test_presigned_url_contains_no_content_type(self):
timestamp = datetime(2017, 3, 22, 0, 0)
with mock.patch('botocore.auth.datetime') as _datetime:
_datetime.datetime.utcnow.return_value = timestamp
url = self.client.generate_presigned_url('get_caller_identity', {})
# There should be no 'content-type' in x-amz-signedheaders
expected_url = (
'https://sts.amazonaws.com/?Action=GetCallerIdentity&'
'Version=2011-06-15&X-Amz-Algorithm=AWS4-HMAC-SHA256&'
'X-Amz-Credential=access_key%2F20170322%2Fus-east-1%2Fsts%2F'
'aws4_request&X-Amz-Date=20170322T000000Z&X-Amz-Expires=3600&'
'X-Amz-SignedHeaders=host&X-Amz-Signature=767845d2ee858069a598d5f'
'8b497b75c7d57356885b1b3dba46dbbc0fc62bf5a'
)
assert_url_equal(url, expected_url)
class TestSTSEndpoints(BaseSessionTest):
def create_sts_client(self, region, endpoint_url=None, use_ssl=True):
return self.session.create_client(
'sts', region_name=region, endpoint_url=endpoint_url,
use_ssl=use_ssl,
)
def set_sts_regional_for_config_file(self, fileobj, config_val):
fileobj.write(
'[default]\n'
'sts_regional_endpoints=%s\n' % config_val
)
fileobj.flush()
self.environ['AWS_CONFIG_FILE'] = fileobj.name
def assert_request_sent(self, sts, expected_url,
expected_signing_region=None):
body = (
b'<GetCallerIdentityResponse>'
b' <GetCallerIdentityResult>'
b' <Arn>arn:aws:iam::123456789012:user/myuser</Arn>'
b' <UserId>UserID</UserId>'
b' <Account>123456789012</Account>'
b' </GetCallerIdentityResult>'
b' <ResponseMetadata>'
b' <RequestId>some-request</RequestId>'
b' </ResponseMetadata>'
b'</GetCallerIdentityResponse>'
)
with ClientHTTPStubber(sts) as http_stubber:
http_stubber.add_response(body=body)
sts.get_caller_identity()
captured_request = http_stubber.requests[0]
self.assertEqual(captured_request.url, expected_url)
if expected_signing_region:
self.assertEqual(
self._get_signing_region(captured_request),
expected_signing_region
)
def _get_signing_region(self, request):
authorization_val = request.headers['Authorization'].decode('utf-8')
match = _V4_SIGNING_REGION_REGEX.match(authorization_val)
return match.group('signing_region')
def test_legacy_region_with_legacy_configured(self):
self.environ['AWS_STS_REGIONAL_ENDPOINTS'] = 'legacy'
sts = self.create_sts_client('us-west-2')
self.assert_request_sent(
sts,
expected_url='https://sts.amazonaws.com/',
expected_signing_region='us-east-1'
)
def test_legacy_region_with_regional_configured(self):
self.environ['AWS_STS_REGIONAL_ENDPOINTS'] = 'regional'
sts = self.create_sts_client('us-west-2')
self.assert_request_sent(
sts,
expected_url='https://sts.us-west-2.amazonaws.com/',
expected_signing_region='us-west-2'
)
def test_fips_endpoint_with_legacy_configured(self):
self.environ['AWS_STS_REGIONAL_ENDPOINTS'] = 'legacy'
sts = self.create_sts_client('us-west-2-fips')
self.assert_request_sent(
sts,
expected_url='https://sts-fips.us-west-2.amazonaws.com/',
expected_signing_region='us-west-2'
)
def test_fips_endpoint_with_regional_configured(self):
self.environ['AWS_STS_REGIONAL_ENDPOINTS'] = 'regional'
sts = self.create_sts_client('us-west-2-fips')
self.assert_request_sent(
sts,
expected_url='https://sts-fips.us-west-2.amazonaws.com/',
expected_signing_region='us-west-2'
)
def test_nonlegacy_region_with_legacy_configured(self):
self.environ['AWS_STS_REGIONAL_ENDPOINTS'] = 'legacy'
sts = self.create_sts_client('ap-east-1')
self.assert_request_sent(
sts,
expected_url='https://sts.ap-east-1.amazonaws.com/',
expected_signing_region='ap-east-1'
)
def test_nonlegacy_region_with_regional_configured(self):
self.environ['AWS_STS_REGIONAL_ENDPOINTS'] = 'regional'
sts = self.create_sts_client('ap-east-1')
self.assert_request_sent(
sts,
expected_url='https://sts.ap-east-1.amazonaws.com/',
expected_signing_region='ap-east-1'
)
def test_nonaws_partition_region_with_legacy_configured(self):
self.environ['AWS_STS_REGIONAL_ENDPOINTS'] = 'legacy'
sts = self.create_sts_client('cn-north-1')
self.assert_request_sent(
sts,
expected_url='https://sts.cn-north-1.amazonaws.com.cn/',
expected_signing_region='cn-north-1'
)
def test_nonaws_partition_region_with_regional_configured(self):
self.environ['AWS_STS_REGIONAL_ENDPOINTS'] = 'regional'
sts = self.create_sts_client('cn-north-1')
self.assert_request_sent(
sts,
expected_url='https://sts.cn-north-1.amazonaws.com.cn/',
expected_signing_region='cn-north-1'
)
def test_global_region_with_legacy_configured(self):
self.environ['AWS_STS_REGIONAL_ENDPOINTS'] = 'legacy'
sts = self.create_sts_client('aws-global')
self.assert_request_sent(
sts,
expected_url='https://sts.amazonaws.com/',
expected_signing_region='us-east-1',
)
def test_global_region_with_regional_configured(self):
self.environ['AWS_STS_REGIONAL_ENDPOINTS'] = 'regional'
sts = self.create_sts_client('aws-global')
self.assert_request_sent(
sts,
expected_url='https://sts.amazonaws.com/',
expected_signing_region='us-east-1'
)
def test_defaults_to_global_endpoint_for_legacy_region(self):
sts = self.create_sts_client('us-west-2')
self.assert_request_sent(
sts,
expected_url='https://sts.amazonaws.com/',
expected_signing_region='us-east-1'
)
def test_defaults_to_regional_endpoint_for_nonlegacy_region(self):
sts = self.create_sts_client('ap-east-1')
self.assert_request_sent(
sts,
expected_url='https://sts.ap-east-1.amazonaws.com/',
expected_signing_region='ap-east-1'
)
def test_configure_sts_regional_from_config_file(self):
with temporary_file('w') as f:
self.set_sts_regional_for_config_file(f, 'regional')
sts = self.create_sts_client('us-west-2')
self.assert_request_sent(
sts,
expected_url='https://sts.us-west-2.amazonaws.com/',
)
def test_env_var_overrides_config_file(self):
self.environ['AWS_STS_REGIONAL_ENDPOINTS'] = 'legacy'
with temporary_file('w') as f:
self.set_sts_regional_for_config_file(f, 'regional')
sts = self.create_sts_client('us-west-2')
self.assert_request_sent(
sts, expected_url='https://sts.amazonaws.com/')
def test_user_provided_endpoint_with_legacy_configured(self):
self.environ['AWS_STS_REGIONAL_ENDPOINTS'] = 'legacy'
sts = self.create_sts_client(
'us-west-2', endpoint_url='https://custom.com')
self.assert_request_sent(
sts, expected_url='https://custom.com/')
def test_user_provided_endpoint_with_regional_configured(self):
self.environ['AWS_STS_REGIONAL_ENDPOINTS'] = 'regional'
sts = self.create_sts_client(
'us-west-2', endpoint_url='https://custom.com')
self.assert_request_sent(
sts, expected_url='https://custom.com/')
def test_http_with_legacy_configured(self):
self.environ['AWS_STS_REGIONAL_ENDPOINTS'] = 'legacy'
sts = self.create_sts_client(
'us-west-2', use_ssl=False)
self.assert_request_sent(
sts, expected_url='http://sts.amazonaws.com/')
def test_client_for_unknown_region(self):
sts = self.create_sts_client('not-real')
self.assert_request_sent(
sts,
expected_url='https://sts.not-real.amazonaws.com/',
expected_signing_region='not-real'
)
def test_client_for_unknown_region_with_legacy_configured(self):
self.environ['AWS_STS_REGIONAL_ENDPOINTS'] = 'legacy'
sts = self.create_sts_client('not-real')
self.assert_request_sent(
sts,expected_url='https://sts.not-real.amazonaws.com/')
def test_client_for_unknown_region_with_regional_configured(self):
self.environ['AWS_STS_REGIONAL_ENDPOINTS'] = 'regional'
sts = self.create_sts_client('not-real')
self.assert_request_sent(
sts,
expected_url='https://sts.not-real.amazonaws.com/',
expected_signing_region='not-real'
)
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