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127 lines
4.3 KiB
Python
127 lines
4.3 KiB
Python
##########################################################################
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#
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# pgAdmin 4 - PostgreSQL Tools
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#
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# Copyright (C) 2013 - 2021, The pgAdmin Development Team
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# This software is released under the PostgreSQL Licence
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#
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##########################################################################
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import re
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import flask
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from flask import current_app, request, session, testing
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from werkzeug.datastructures import Headers
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from werkzeug.test import EnvironBuilder
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from flask_wtf.csrf import generate_csrf
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import config
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class RequestShim(object):
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"""
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A fake request that proxies cookie-related methods to a Flask test client.
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"""
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def __init__(self, client):
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self.client = client
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def set_cookie(self, key, value='', *args, **kwargs):
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"Set the cookie on the Flask test client."
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server_name = current_app.config["SERVER_NAME"] or "localhost"
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return self.client.set_cookie(
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server_name, key=key, value=value, *args, **kwargs
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)
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def delete_cookie(self, key, *args, **kwargs):
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"Delete the cookie on the Flask test client."
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server_name = current_app.config["SERVER_NAME"] or "localhost"
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return self.client.delete_cookie(
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server_name, key=key, *args, **kwargs
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)
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class TestClient(testing.FlaskClient):
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def __init__(self, *args, **kwargs):
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self.csrf_token = None
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self.app = None
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super(TestClient, self).__init__(*args, **kwargs)
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def setApp(self, _app):
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self.app = _app
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def open(self, *args, **kwargs):
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if len(args) > 0 and isinstance(args[0], (EnvironBuilder, dict)):
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return super(TestClient, self).open(*args, **kwargs)
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data = kwargs.get('data', {})
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if self.csrf_token is not None and not (
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'email' in data and
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'password' in data and
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'csrf_token' in data
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):
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api_key_headers = Headers({})
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api_key_headers[
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getattr(config, 'WTF_CSRF_HEADERS', ['X-CSRFToken'])[0]
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] = self.csrf_token
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headers = kwargs.pop('headers', Headers())
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headers.extend(api_key_headers)
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kwargs['headers'] = headers
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return super(TestClient, self).open(*args, **kwargs)
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def fetch_csrf(self, res):
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m = re.search(
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b'<input id="csrf_token" name="csrf_token" type="hidden"'
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b' value="([^"]*)">', res.data
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)
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return m.group(1).decode("utf-8")
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def generate_csrf_token(self, *args, **kwargs):
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# First, we'll wrap our request shim around the test client, so
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# that it will work correctly when Flask asks it to set a cookie.
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request = RequestShim(self)
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# Next, we need to look up any cookies that might already exist on
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# this test client, such as the secure cookie that
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# powers `flask.session`,
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# and make a test request context that has those cookies in it.
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environ_overrides = {}
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self.cookie_jar.inject_wsgi(environ_overrides)
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with self.app.test_request_context(
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"/login", environ_overrides=environ_overrides,
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):
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# Now, we call Flask-WTF's method of generating a CSRF token...
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csrf_token = generate_csrf()
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# ...which also sets a value in `flask.session`, so we need to
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# ask Flask to save that value to the cookie jar in the test
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# client. This is where we actually use that request shim we
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# made!
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self.app.save_session(flask.session, request)
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return csrf_token
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def login(self, email, password, _follow_redirects=False,
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headers=None):
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if config.SERVER_MODE is True:
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res = self.get('/login', follow_redirects=True)
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csrf_token = self.fetch_csrf(res)
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else:
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csrf_token = self.generate_csrf_token()
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res = self.post(
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'/authenticate/login', data=dict(
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email=email, password=password,
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csrf_token=csrf_token,
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),
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follow_redirects=_follow_redirects,
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headers=headers
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)
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self.csrf_token = csrf_token
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return res
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def logout(self):
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self.get('/logout?next=/browser/', follow_redirects=False)
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self.csrf_token = None
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