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Launch webbrowser for oauth2 authentication
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| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License 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. | ||
|
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| import json | ||
| import re | ||
| import uuid | ||
| from collections import namedtuple | ||
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| import httpretty | ||
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| from trino import constants | ||
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| SERVER_ADDRESS = "https://coordinator" | ||
| REDIRECT_PATH = "oauth2/initiate" | ||
| TOKEN_PATH = "oauth2/token" | ||
| REDIRECT_RESOURCE = f"{SERVER_ADDRESS}/{REDIRECT_PATH}" | ||
| TOKEN_RESOURCE = f"{SERVER_ADDRESS}/{TOKEN_PATH}" | ||
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| class RedirectHandler: | ||
| def __init__(self): | ||
| self.redirect_server = "" | ||
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| def __call__(self, url): | ||
| self.redirect_server += url | ||
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| class PostStatementCallback: | ||
| def __init__(self, redirect_server, token_server, tokens, sample_post_response_data): | ||
| self.redirect_server = redirect_server | ||
| self.token_server = token_server | ||
| self.tokens = tokens | ||
| self.sample_post_response_data = sample_post_response_data | ||
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| def __call__(self, request, uri, response_headers): | ||
| authorization = request.headers.get("Authorization") | ||
| if authorization and authorization.replace("Bearer ", "") in self.tokens: | ||
| return [200, response_headers, json.dumps(self.sample_post_response_data)] | ||
| return [401, {'Www-Authenticate': f'Bearer x_redirect_server="{self.redirect_server}", ' | ||
| f'x_token_server="{self.token_server}"', | ||
| 'Basic realm': '"Trino"'}, ""] | ||
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| class GetTokenCallback: | ||
| def __init__(self, token_server, token, attempts=1): | ||
| self.token_server = token_server | ||
| self.token = token | ||
| self.attempts = attempts | ||
|
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| def __call__(self, request, uri, response_headers): | ||
| self.attempts -= 1 | ||
| if self.attempts < 0: | ||
| return [404, response_headers, "{}"] | ||
| if self.attempts == 0: | ||
| return [200, response_headers, f'{{"token": "{self.token}"}}'] | ||
| return [200, response_headers, f'{{"nextUri": "{self.token_server}"}}'] | ||
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| def _get_token_requests(challenge_id): | ||
| return list(filter( | ||
| lambda r: r.method == "GET" and r.path == f"/{TOKEN_PATH}/{challenge_id}", | ||
| httpretty.latest_requests())) | ||
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| def _post_statement_requests(): | ||
| return list(filter( | ||
| lambda r: r.method == "POST" and r.path == constants.URL_STATEMENT_PATH, | ||
| httpretty.latest_requests())) | ||
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| class MultithreadedTokenServer: | ||
| Challenge = namedtuple('Challenge', ['token', 'attempts']) | ||
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| def __init__(self, sample_post_response_data, attempts=1): | ||
| self.tokens = set() | ||
| self.challenges = {} | ||
| self.sample_post_response_data = sample_post_response_data | ||
| self.attempts = attempts | ||
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| # bind post statement | ||
| httpretty.register_uri( | ||
| method=httpretty.POST, | ||
| uri=f"{SERVER_ADDRESS}{constants.URL_STATEMENT_PATH}", | ||
| body=self.post_statement_callback) | ||
|
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| # bind get token | ||
| httpretty.register_uri( | ||
| method=httpretty.GET, | ||
| uri=re.compile(rf"{TOKEN_RESOURCE}/.*"), | ||
| body=self.get_token_callback) | ||
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| # noinspection PyUnusedLocal | ||
| def post_statement_callback(self, request, uri, response_headers): | ||
| authorization = request.headers.get("Authorization") | ||
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| if authorization and authorization.replace("Bearer ", "") in self.tokens: | ||
| return [200, response_headers, json.dumps(self.sample_post_response_data)] | ||
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| challenge_id = str(uuid.uuid4()) | ||
| token = str(uuid.uuid4()) | ||
| self.tokens.add(token) | ||
| self.challenges[challenge_id] = MultithreadedTokenServer.Challenge(token, self.attempts) | ||
| redirect_server = f"{REDIRECT_RESOURCE}/{challenge_id}" | ||
| token_server = f"{TOKEN_RESOURCE}/{challenge_id}" | ||
| return [401, {'Www-Authenticate': f'Bearer x_redirect_server="{redirect_server}", ' | ||
| f'x_token_server="{token_server}"', | ||
| 'Basic realm': '"Trino"'}, ""] | ||
|
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| # noinspection PyUnusedLocal | ||
| def get_token_callback(self, request, uri, response_headers): | ||
| challenge_id = uri.replace(f"{TOKEN_RESOURCE}/", "") | ||
| challenge = self.challenges[challenge_id] | ||
| challenge = challenge._replace(attempts=challenge.attempts - 1) | ||
| self.challenges[challenge_id] = challenge | ||
| if challenge.attempts < 0: | ||
| return [404, response_headers, "{}"] | ||
| if challenge.attempts == 0: | ||
| return [200, response_headers, f'{{"token": "{challenge.token}"}}'] | ||
| return [200, response_headers, f'{{"nextUri": "{uri}"}}'] |
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