186 lines
7.7 KiB
Python
186 lines
7.7 KiB
Python
"""
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written by: Lawrence McDaniel
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https://lawrencemcdaniel.com
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date: oct-2022
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usage: subclass of BaseOAuth2 Third Party Authtencation client to
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handle the field mapping and data conversions between
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the dict that WP Oauth returns versus the dict that Open edX
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actually needs.
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"""
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import json
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from urllib.parse import urlencode
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from urllib.request import urlopen
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from social_core.backends.oauth import BaseOAuth2
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from logging import getLogger
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logger = getLogger(__name__)
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VERBOSE_LOGGING = True
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class StepwiseMathWPOAuth2(BaseOAuth2):
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"""
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WP OAuth authentication backend customized for Open edX.
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see https://python-social-auth.readthedocs.io/en/latest/backends/implementation.html
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"""
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# This defines the backend name and identifies it during the auth process.
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# The name is used in the URLs /login/<backend name> and /complete/<backend name>.
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#
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# This is the string value that will appear in the LMS Django Admin
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# Third Party Authentication / Provider Configuration (OAuth)
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# setup page drop-down box titled, "Backend name:", just above
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# the "Client ID:" and "Client Secret:" fields.
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name = 'stepwisemath-oauth'
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# note: no slash at the end of the base url. Python Social Auth
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# might clean this up for you, but i'm not 100% certain of that.
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BASE_URL = "https://stepwisemath.ai"
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# The default key name where the user identification field is defined, it’s
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# used in the auth process when some basic user data is returned. This Id
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# is stored in the UserSocialAuth.uid field and this, together with the
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# UserSocialAuth.provider field, is used to uniquely identify a user association.
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ID_KEY = 'id'
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# Flags the backend to enforce email validation during the pipeline
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# (if the corresponding pipeline social_core.pipeline.mail.mail_validation was enabled).
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REQUIRES_EMAIL_VALIDATION = False
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# Some providers give nothing about the user but some basic data like the
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# user Id or an email address. The default scope attribute is used to
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# specify a default value for the scope argument to request those extra bits.
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DEFAULT_SCOPE = 'basic'
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# Specifying the method type required to retrieve your access token if it’s
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# not the default GET request.
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ACCESS_TOKEN_METHOD = 'POST'
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# require redirect domain to match the original initiating domain.
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SOCIAL_AUTH_SANITIZE_REDIRECTS = True
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# During the auth process some basic user data is returned by the provider
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# or retrieved by the user_data() method which usually is used to call
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# some API on the provider to retrieve it. This data will be stored in the
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# UserSocialAuth.extra_data attribute, but to make it accessible under some
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# common names on different providers, this attribute defines a list of
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# tuples in the form (name, alias) where name is the key in the user data
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# (which should be a dict instance) and alias is the name to store it on extra_data.
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EXTRA_DATA = [
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('id', 'id'),
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('wp_username', 'wp_username'),
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('is_superuser', 'is_superuser'),
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('is_staff', 'is_staff'),
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('date_joined', 'date_joined'),
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]
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# the value of the scope separator is user-defined. Check the
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# scopes field value for your oauth client in your wordpress host.
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# the wp-oauth default value for scopes is 'basic' but can be
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# changed to a list. example 'basic, email, profile'. This
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# list can be delimited with commas, spaces, whatever.
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SCOPE_SEPARATOR = " "
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# private utility function. not part of psa.
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def _urlopen(self, url):
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return urlopen(url).read().decode("utf-8")
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# override Python Social Auth default end points.
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# see https://wp-oauth.com/docs/general/endpoints/
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#
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# Note that we're only implementing Python properties
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# so that we can include logging for diagnostic purposes.
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@property
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def AUTHORIZATION_URL(self) -> str:
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retval = f"{self.BASE_URL}/oauth/authorize"
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if VERBOSE_LOGGING:
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logger.info('AUTHORIZATION_URL: {url}'.format(url=retval))
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return retval
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@property
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def ACCESS_TOKEN_URL(self) -> str:
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retval = f"{self.BASE_URL}/oauth/token"
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if VERBOSE_LOGGING:
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logger.info('ACCESS_TOKEN_URL: {url}'.format(url=retval))
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return retval
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@property
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def USER_QUERY(self) -> str:
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retval = f"{self.BASE_URL}/oauth/me"
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if VERBOSE_LOGGING:
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logger.info('USER_QUERY: {url}'.format(url=retval))
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return retval
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# see https://python-social-auth.readthedocs.io/en/latest/backends/implementation.html
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# Return user details from the Wordpress user account
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def get_user_details(self, response) -> dict:
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if type(response)==dict:
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if ('ID' not in response.keys()) or ('user_email' not in response.keys()):
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logger.info('get_user_details() - response object lacks required keys. exiting.')
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return {}
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if VERBOSE_LOGGING:
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if not response:
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logger.info('get_user_details() - response is missing. exiting.')
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return {}
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logger.info('get_user_details() - start. response: {response}'.format(
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response=json.dumps(response, sort_keys=True, indent=4)
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))
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# try to parse out the first and last names
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split_name = response.get('display_name', '').split()
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first_name = split_name[0] if len(split_name) > 0 else ''
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last_name = split_name[-1] if len(split_name) == 2 else ''
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# check for superuser / staff status
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user_roles = response.get('user_roles', [])
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super_user = 'administrator' in user_roles
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is_staff = 'administrator' in user_roles
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user_details = {
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'id': int(response.get('ID'), 0),
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'username': response.get('user_email', ''),
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'wp_username': response.get('user_login', ''),
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'email': response.get('user_email', ''),
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'first_name': first_name,
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'last_name': last_name,
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'fullname': response.get('display_name', ''),
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'is_superuser': super_user,
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'is_staff': is_staff,
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'refresh_token': response.get('refresh_token', ''),
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'scope': response.get('scope', ''),
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'token_type': response.get('token_type', ''),
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'date_joined': response.get('user_registered', ''),
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'user_status': response.get('user_status', ''),
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}
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if VERBOSE_LOGGING:
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logger.info('get_user_details() - finish. user_details: {user_details}'.format(
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user_details=json.dumps(user_details, sort_keys=True, indent=4)
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))
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return user_details
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# Load user data from service url end point. Note that in the case of
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# wp oauth, the response object returned by self.USER_QUERY
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# is the same as the response object passed to get_user_details().
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#
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# see https://python-social-auth.readthedocs.io/en/latest/backends/implementation.html
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def user_data(self, access_token, *args, **kwargs) -> dict:
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url = f'{self.USER_QUERY}?' + urlencode({
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'access_token': access_token
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})
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if VERBOSE_LOGGING:
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logger.info("user_data() url: {url}, kwargs={kwargs}".format(
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url=url,
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kwargs=json.dumps(kwargs, sort_keys=True, indent=4)
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))
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try:
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response = json.loads(self._urlopen(url))
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user_details = self.get_user_details(response)
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return user_details
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except ValueError as e:
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logger.error('user_data() {err}'.format(err=e))
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return None
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