def authenticate(self, no_browser=False):
if no_browser:
httpd = None
redirect_uri = 'urn:ietf:wg:oauth:2.0:oob'
else:
httpd = ClientRedirectServer(('localhost', 0),
ClientRedirectHandler)
redirect_uri = 'http://localhost:%d/' % httpd.server_port
flow = OAuth2WebServerFlow(client_id=self.CLIENT_ID,
client_secret=self.CLIENT_SECRET,
scope=self.SCOPE,
redirect_uri=redirect_uri)
auth_url = flow.step1_get_authorize_url()
if httpd is None:
print('Open the following URL in a browser:\n\n%s' % auth_url)
code = input('Enter verification code: ').strip()
else:
webbrowser.open(auth_url)
print('Your browser has been opened to visit:\n\n%s\n' % auth_url)
print('If your browser is on a different machine, then exit '
'and re-run with the --no-browser command line option.')
try:
httpd.handle_request()
finally:
httpd.server_close()
if 'error' in httpd.query_params:
raise GAPIError('Authentication request was rejected.')
if 'code' in httpd.query_params:
code = httpd.query_params['code']
else:
raise GAPIError('Failed to retreive verification code. '
'Try running with --no-browser.')
credentials = flow.step2_exchange(code)
self.config.update_credentials(credentials)
