1/*  Part of SWISH
    2
    3    Author:        Jan Wielemaker
    4    E-mail:        J.Wielemaker@cs.vu.nl
    5    WWW:           http://www.swi-prolog.org
    6    Copyright (C): 2017, VU University Amsterdam
    7			 CWI Amsterdam
    8    All rights reserved.
    9
   10    Redistribution and use in source and binary forms, with or without
   11    modification, are permitted provided that the following conditions
   12    are met:
   13
   14    1. Redistributions of source code must retain the above copyright
   15       notice, this list of conditions and the following disclaimer.
   16
   17    2. Redistributions in binary form must reproduce the above copyright
   18       notice, this list of conditions and the following disclaimer in
   19       the documentation and/or other materials provided with the
   20       distribution.
   21
   22    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   23    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   24    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   25    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
   26    COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   27    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   28    BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   29    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   30    CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   31    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
   32    ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   33    POSSIBILITY OF SUCH DAMAGE.
   34*/
   35
   36:- module(config_auth_google, []).   37:- use_module(swish(lib/oauth2)).   38:- use_module(swish(lib/plugin/login)).   39:- use_module(library(http/http_dispatch)).   40:- use_module(library(http/http_session)).   41:- use_module(library(http/http_json)).   42:- use_module(library(http/http_path)).   43:- use_module(library(debug)).

Enable login with Google

This module allows for configures login with Google. To enable this module:

  1. Follow these steps to create a Google project and get
  2. COPY this file to config-enabled
  3. EDIT the following server attributes (near the end of this file)
    • redirect_uri: the location of your swish server.
    • client_id: the client id you obtained from Google.
    • client_secret: the client secret you obtained from Google.

*/

   67:- multifile
   68    oauth2:login/3,
   69    oauth2:server_attribute/3,
   70    swish_config:login_item/2,          % -Server, -HTML_DOM
   71    swish_config:login/2,               % +Server, +Request
   72    swish_config:user_info/2.           % +Request, ?Server, -Info
   73
   74:- http_set_session_options([create(noauto)]).   75
   76:- http_handler(swish(logout), google_logout, []).   77
   78swish_config:login_item(google, 10-Item) :-
   79    http_absolute_location(icons('social_google_box.png'), Img, []),
   80    Item = img([ src(Img),
   81                 class('login-with'),
   82                 'data-server'(google),
   83                 'data-frame'(popup),
   84                 title('Login with Google')
   85               ]).
   86
   87swish_config:login(google, Request) :-
   88    oauth2_login(Request, [server(google)]).
   89
   90oauth2:login(_Request, google, TokenInfo) :-
   91    token_info_to_user_info(TokenInfo, UserInfo),
   92    debug(oauth, 'UserInfo: ~p', [UserInfo]),
   93    http_open_session(_SessionID, []),
   94    http_session_assert(oauth2(google, TokenInfo)),
   95    reply_logged_in([ identity_provider('Google'),
   96                      name(UserInfo.name),
   97                      user_info(UserInfo)
   98                    ]).
 google_logout(+Request)
Logout by removing the session data
  104google_logout(_Request) :-
  105    catch(http_session_retractall(oauth2(_,_)), _, true),
  106    reply_logged_out([]).
 swish_config:user_info(+Request, ?Server, -Info:dict) is semidet
True if Info represents describes the currently logged in user.
  112swish_config:user_info(_Request, google, UserInfo) :-
  113    http_in_session(_SessionID),
  114    http_session_data(oauth2(google, TokenInfo)),
  115    token_info_to_user_info(TokenInfo, UserInfo).
  116
  117token_info_to_user_info(TokenInfo, UserInfo) :-
  118    oauth2_claim(TokenInfo, Claim),
  119    map_user_info(Claim, Claim1),
  120    http_link_to_id(google_logout, [], LogoutURL),
  121    UserInfo = Claim1.put(_{ auth_method:oauth2,
  122                             logout_url:LogoutURL,
  123                             identity_provider:google
  124                           }).
 map_user_info(+OAuthInfo, -UserInfo) is det
u{user:User, group:Group, name:Name, email:Email}
  130map_user_info(Dict, Dict) :-
  131    debug(oauth, 'Got: ~p', [Dict]).
 oauth2:server_attribute(?ServerID, ?Attribute, ?Value)
Declare properties of an oauth2 identity provider. The values below are for a Unity server.
See also
- swish(lib/oauth2) for a description of the attributes.
  140% from https://accounts.google.com/.well-known/openid-configuration
  141
  142oauth2:server_attribute(google, url,
  143                        'https://accounts.google.com').
  144oauth2:server_attribute(google, redirect_uri,
  145                        'http://logicmoo.org/oauth2/google/reply').
  146oauth2:server_attribute(google, client_id,
  147                        '131442651-0b9tbp7n2ihu4or4nj31395n05v1lg2c.apps.googleusercontent.com').
  148oauth2:server_attribute(google, client_secret,
  149                        'jykqJiZikgMteL3vq0IhjPDC').
  150oauth2:server_attribute(google, scope,
  151                        profile)