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# -*- coding: utf-8 -*- | ||
# author:duoduo3369@gmail.com https://github.com/duoduo369 | ||
""" | ||
Weixin OAuth2 backend | ||
""" | ||
from requests import HTTPError | ||
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from social.backends.oauth import BaseOAuth2 | ||
from social.exceptions import AuthCanceled, AuthUnknownError | ||
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class WeixinOAuth2(BaseOAuth2): | ||
"""Weixin OAuth authentication backend""" | ||
name = 'weixin' | ||
ID_KEY = 'openid' | ||
AUTHORIZATION_URL = 'https://open.weixin.qq.com/connect/qrconnect' | ||
ACCESS_TOKEN_URL = 'https://api.weixin.qq.com/sns/oauth2/access_token' | ||
ACCESS_TOKEN_METHOD = 'POST' | ||
REDIRECT_STATE = False | ||
EXTRA_DATA = [ | ||
('nickname', 'username'), | ||
('headimgurl', 'profile_image_url'), | ||
] | ||
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def get_user_details(self, response): | ||
"""Return user details from Weixin. API URL is: | ||
https://api.weixin.qq.com/sns/userinfo | ||
""" | ||
if self.setting('DOMAIN_AS_USERNAME'): | ||
username = response.get('domain', '') | ||
else: | ||
username = response.get('nickname', '') | ||
profile_image_url = response.get('headimgurl', '') | ||
return {'username': username, 'profile_image_url': profile_image_url} | ||
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def user_data(self, access_token, *args, **kwargs): | ||
data = self.get_json('https://api.weixin.qq.com/sns/userinfo', | ||
params={'access_token': access_token, | ||
'openid': kwargs['response']['openid']}) | ||
nickname = data.get('nickname') | ||
if nickname: | ||
# weixin api has some encode bug, here need handle | ||
data['nickname'] = nickname.encode('raw_unicode_escape').decode('utf-8') | ||
return data | ||
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def auth_params(self, state=None): | ||
appid, secret = self.get_key_and_secret() | ||
params = { | ||
'appid': appid, | ||
'redirect_uri': self.get_redirect_uri(state) | ||
} | ||
if self.STATE_PARAMETER and state: | ||
params['state'] = state | ||
if self.RESPONSE_TYPE: | ||
params['response_type'] = self.RESPONSE_TYPE | ||
return params | ||
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def auth_complete_params(self, state=None): | ||
appid, secret = self.get_key_and_secret() | ||
return { | ||
'grant_type': 'authorization_code', # request auth code | ||
'code': self.data.get('code', ''), # server response code | ||
'appid': appid, | ||
'secret': secret, | ||
'redirect_uri': self.get_redirect_uri(state) | ||
} | ||
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def refresh_token_params(self, token, *args, **kwargs): | ||
appid, secret = self.get_key_and_secret() | ||
return { | ||
'refresh_token': token, | ||
'grant_type': 'refresh_token', | ||
'appid': appid, | ||
'secret': secret | ||
} | ||
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def auth_complete(self, *args, **kwargs): | ||
"""Completes loging process, must return user instance""" | ||
self.process_error(self.data) | ||
try: | ||
response = self.request_access_token( | ||
self.ACCESS_TOKEN_URL, | ||
data=self.auth_complete_params(self.validate_state()), | ||
headers=self.auth_headers(), | ||
method=self.ACCESS_TOKEN_METHOD | ||
) | ||
except HTTPError as err: | ||
if err.response.status_code == 400: | ||
raise AuthCanceled(self) | ||
else: | ||
raise | ||
except KeyError: | ||
raise AuthUnknownError(self) | ||
if 'errcode' in response: | ||
raise AuthCanceled(self) | ||
self.process_error(response) | ||
return self.do_auth(response['access_token'], response=response, | ||
*args, **kwargs) |