summary refs log tree commit diff
path: root/v1.112/openid.html
blob: fbea81b5f553f93de844013a8b5b2f1829c1828a (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
<!DOCTYPE HTML>
<html lang="en" class="sidebar-visible no-js light">
    <head>
        <!-- Book generated using mdBook -->
        <meta charset="UTF-8">
        <title>OpenID Connect - Synapse</title>
        <!-- Custom HTML head -->
        <meta content="text/html; charset=utf-8" http-equiv="Content-Type">
        <meta name="description" content="">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <meta name="theme-color" content="#ffffff" />

        <link rel="icon" href="favicon.svg">
        <link rel="shortcut icon" href="favicon.png">
        <link rel="stylesheet" href="css/variables.css">
        <link rel="stylesheet" href="css/general.css">
        <link rel="stylesheet" href="css/chrome.css">
        <link rel="stylesheet" href="css/print.css" media="print">
        <!-- Fonts -->
        <link rel="stylesheet" href="FontAwesome/css/font-awesome.css">
        <link rel="stylesheet" href="fonts/fonts.css">
        <!-- Highlight.js Stylesheets -->
        <link rel="stylesheet" href="highlight.css">
        <link rel="stylesheet" href="tomorrow-night.css">
        <link rel="stylesheet" href="ayu-highlight.css">

        <!-- Custom theme stylesheets -->
        <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
        <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
        <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
        <link rel="stylesheet" href="docs/website_files/version-picker.css">
    </head>
    <body>
        <!-- Provide site root to javascript -->
        <script type="text/javascript">
            var path_to_root = "";
            var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "navy" : "light";
        </script>

        <!-- Work around some values being stored in localStorage wrapped in quotes -->
        <script type="text/javascript">
            try {
                var theme = localStorage.getItem('mdbook-theme');
                var sidebar = localStorage.getItem('mdbook-sidebar');
                if (theme.startsWith('"') && theme.endsWith('"')) {
                    localStorage.setItem('mdbook-theme', theme.slice(1, theme.length - 1));
                }
                if (sidebar.startsWith('"') && sidebar.endsWith('"')) {
                    localStorage.setItem('mdbook-sidebar', sidebar.slice(1, sidebar.length - 1));
                }
            } catch (e) { }
        </script>

        <!-- Set the theme before any content is loaded, prevents flash -->
        <script type="text/javascript">
            var theme;
            try { theme = localStorage.getItem('mdbook-theme'); } catch(e) { }
            if (theme === null || theme === undefined) { theme = default_theme; }
            var html = document.querySelector('html');
            html.classList.remove('no-js')
            html.classList.remove('light')
            html.classList.add(theme);
            html.classList.add('js');
        </script>

        <!-- Hide / unhide sidebar before it is displayed -->
        <script type="text/javascript">
            var html = document.querySelector('html');
            var sidebar = 'hidden';
            if (document.body.clientWidth >= 1080) {
                try { sidebar = localStorage.getItem('mdbook-sidebar'); } catch(e) { }
                sidebar = sidebar || 'visible';
            }
            html.classList.remove('sidebar-visible');
            html.classList.add("sidebar-" + sidebar);
        </script>

        <nav id="sidebar" class="sidebar" aria-label="Table of contents">
            <div class="sidebar-scrollbox">
                <ol class="chapter"><li class="chapter-item expanded affix "><li class="part-title">Introduction</li><li class="chapter-item expanded "><a href="welcome_and_overview.html">Welcome and Overview</a></li><li class="chapter-item expanded affix "><li class="part-title">Setup</li><li class="chapter-item expanded "><a href="setup/installation.html">Installation</a></li><li class="chapter-item expanded "><a href="postgres.html">Using Postgres</a></li><li class="chapter-item expanded "><a href="reverse_proxy.html">Configuring a Reverse Proxy</a></li><li class="chapter-item expanded "><a href="setup/forward_proxy.html">Configuring a Forward/Outbound Proxy</a></li><li class="chapter-item expanded "><a href="turn-howto.html">Configuring a Turn Server</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="setup/turn/coturn.html">coturn TURN server</a></li><li class="chapter-item expanded "><a href="setup/turn/eturnal.html">eturnal TURN server</a></li></ol></li><li class="chapter-item expanded "><a href="delegate.html">Delegation</a></li><li class="chapter-item expanded affix "><li class="part-title">Upgrading</li><li class="chapter-item expanded "><a href="upgrade.html">Upgrading between Synapse Versions</a></li><li class="chapter-item expanded affix "><li class="part-title">Usage</li><li class="chapter-item expanded "><a href="federate.html">Federation</a></li><li class="chapter-item expanded "><a href="usage/configuration/index.html">Configuration</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="usage/configuration/config_documentation.html">Configuration Manual</a></li><li class="chapter-item expanded "><a href="usage/configuration/homeserver_sample_config.html">Homeserver Sample Config File</a></li><li class="chapter-item expanded "><a href="usage/configuration/logging_sample_config.html">Logging Sample Config File</a></li><li class="chapter-item expanded "><a href="structured_logging.html">Structured Logging</a></li><li class="chapter-item expanded "><a href="templates.html">Templates</a></li><li class="chapter-item expanded "><a href="usage/configuration/user_authentication/index.html">User Authentication</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="usage/configuration/user_authentication/single_sign_on/index.html">Single-Sign On</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="openid.html" class="active">OpenID Connect</a></li><li class="chapter-item expanded "><a href="usage/configuration/user_authentication/single_sign_on/saml.html">SAML</a></li><li class="chapter-item expanded "><a href="usage/configuration/user_authentication/single_sign_on/cas.html">CAS</a></li><li class="chapter-item expanded "><a href="sso_mapping_providers.html">SSO Mapping Providers</a></li></ol></li><li class="chapter-item expanded "><a href="password_auth_providers.html">Password Auth Providers</a></li><li class="chapter-item expanded "><a href="jwt.html">JSON Web Tokens</a></li><li class="chapter-item expanded "><a href="usage/configuration/user_authentication/refresh_tokens.html">Refresh Tokens</a></li></ol></li><li class="chapter-item expanded "><a href="CAPTCHA_SETUP.html">Registration Captcha</a></li><li class="chapter-item expanded "><a href="application_services.html">Application Services</a></li><li class="chapter-item expanded "><a href="server_notices.html">Server Notices</a></li><li class="chapter-item expanded "><a href="consent_tracking.html">Consent Tracking</a></li><li class="chapter-item expanded "><a href="user_directory.html">User Directory</a></li><li class="chapter-item expanded "><a href="message_retention_policies.html">Message Retention Policies</a></li><li class="chapter-item expanded "><a href="modules/index.html">Pluggable Modules</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="modules/writing_a_module.html">Writing a module</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="modules/spam_checker_callbacks.html">Spam checker callbacks</a></li><li class="chapter-item expanded "><a href="modules/third_party_rules_callbacks.html">Third-party rules callbacks</a></li><li class="chapter-item expanded "><a href="modules/presence_router_callbacks.html">Presence router callbacks</a></li><li class="chapter-item expanded "><a href="modules/account_validity_callbacks.html">Account validity callbacks</a></li><li class="chapter-item expanded "><a href="modules/password_auth_provider_callbacks.html">Password auth provider callbacks</a></li><li class="chapter-item expanded "><a href="modules/background_update_controller_callbacks.html">Background update controller callbacks</a></li><li class="chapter-item expanded "><a href="modules/account_data_callbacks.html">Account data callbacks</a></li><li class="chapter-item expanded "><a href="modules/add_extra_fields_to_client_events_unsigned.html">Add extra fields to client events unsigned section callbacks</a></li><li class="chapter-item expanded "><a href="modules/porting_legacy_module.html">Porting a legacy module to the new interface</a></li></ol></li></ol></li><li class="chapter-item expanded "><a href="workers.html">Workers</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="synctl_workers.html">Using synctl with Workers</a></li><li class="chapter-item expanded "><a href="systemd-with-workers/index.html">Systemd</a></li></ol></li></ol></li><li class="chapter-item expanded "><a href="usage/administration/index.html">Administration</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="usage/administration/admin_api/index.html">Admin API</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="admin_api/account_validity.html">Account Validity</a></li><li class="chapter-item expanded "><a href="usage/administration/admin_api/background_updates.html">Background Updates</a></li><li class="chapter-item expanded "><a href="admin_api/event_reports.html">Event Reports</a></li><li class="chapter-item expanded "><a href="admin_api/experimental_features.html">Experimental Features</a></li><li class="chapter-item expanded "><a href="admin_api/media_admin_api.html">Media</a></li><li class="chapter-item expanded "><a href="admin_api/purge_history_api.html">Purge History</a></li><li class="chapter-item expanded "><a href="admin_api/register_api.html">Register Users</a></li><li class="chapter-item expanded "><a href="usage/administration/admin_api/registration_tokens.html">Registration Tokens</a></li><li class="chapter-item expanded "><a href="admin_api/room_membership.html">Manipulate Room Membership</a></li><li class="chapter-item expanded "><a href="admin_api/rooms.html">Rooms</a></li><li class="chapter-item expanded "><a href="admin_api/server_notices.html">Server Notices</a></li><li class="chapter-item expanded "><a href="admin_api/statistics.html">Statistics</a></li><li class="chapter-item expanded "><a href="admin_api/user_admin_api.html">Users</a></li><li class="chapter-item expanded "><a href="admin_api/version_api.html">Server Version</a></li><li class="chapter-item expanded "><a href="usage/administration/admin_api/federation.html">Federation</a></li></ol></li><li class="chapter-item expanded "><a href="manhole.html">Manhole</a></li><li class="chapter-item expanded "><a href="metrics-howto.html">Monitoring</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="usage/administration/monitoring/reporting_homeserver_usage_statistics.html">Reporting Homeserver Usage Statistics</a></li></ol></li><li class="chapter-item expanded "><a href="usage/administration/monthly_active_users.html">Monthly Active Users</a></li><li class="chapter-item expanded "><a href="usage/administration/understanding_synapse_through_grafana_graphs.html">Understanding Synapse Through Grafana Graphs</a></li><li class="chapter-item expanded "><a href="usage/administration/useful_sql_for_admins.html">Useful SQL for Admins</a></li><li class="chapter-item expanded "><a href="usage/administration/database_maintenance_tools.html">Database Maintenance Tools</a></li><li class="chapter-item expanded "><a href="usage/administration/state_groups.html">State Groups</a></li><li class="chapter-item expanded "><a href="usage/administration/request_log.html">Request log format</a></li><li class="chapter-item expanded "><a href="usage/administration/admin_faq.html">Admin FAQ</a></li><li class="chapter-item expanded "><div>Scripts</div></li></ol></li><li class="chapter-item expanded "><li class="part-title">Development</li><li class="chapter-item expanded "><a href="development/contributing_guide.html">Contributing Guide</a></li><li class="chapter-item expanded "><a href="code_style.html">Code Style</a></li><li class="chapter-item expanded "><a href="development/reviews.html">Reviewing Code</a></li><li class="chapter-item expanded "><a href="development/releases.html">Release Cycle</a></li><li class="chapter-item expanded "><a href="development/git.html">Git Usage</a></li><li class="chapter-item expanded "><div>Testing</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="development/demo.html">Demo scripts</a></li></ol></li><li class="chapter-item expanded "><a href="opentracing.html">OpenTracing</a></li><li class="chapter-item expanded "><a href="development/database_schema.html">Database Schemas</a></li><li class="chapter-item expanded "><a href="development/experimental_features.html">Experimental features</a></li><li class="chapter-item expanded "><a href="development/dependencies.html">Dependency management</a></li><li class="chapter-item expanded "><div>Synapse Architecture</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="development/synapse_architecture/cancellation.html">Cancellation</a></li><li class="chapter-item expanded "><a href="log_contexts.html">Log Contexts</a></li><li class="chapter-item expanded "><a href="replication.html">Replication</a></li><li class="chapter-item expanded "><a href="development/synapse_architecture/streams.html">Streams</a></li><li class="chapter-item expanded "><a href="tcp_replication.html">TCP Replication</a></li><li class="chapter-item expanded "><a href="development/synapse_architecture/faster_joins.html">Faster remote joins</a></li></ol></li><li class="chapter-item expanded "><a href="development/internal_documentation/index.html">Internal Documentation</a></li><li><ol class="section"><li class="chapter-item expanded "><div>Single Sign-On</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="development/saml.html">SAML</a></li><li class="chapter-item expanded "><a href="development/cas.html">CAS</a></li></ol></li><li class="chapter-item expanded "><a href="development/room-dag-concepts.html">Room DAG concepts</a></li><li class="chapter-item expanded "><div>State Resolution</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="auth_chain_difference_algorithm.html">The Auth Chain Difference Algorithm</a></li></ol></li><li class="chapter-item expanded "><a href="media_repository.html">Media Repository</a></li><li class="chapter-item expanded "><a href="room_and_user_statistics.html">Room and User Statistics</a></li></ol></li><li class="chapter-item expanded "><div>Scripts</div></li><li class="chapter-item expanded affix "><li class="part-title">Other</li><li class="chapter-item expanded "><a href="deprecation_policy.html">Dependency Deprecation Policy</a></li><li class="chapter-item expanded "><a href="other/running_synapse_on_single_board_computers.html">Running Synapse on a Single-Board Computer</a></li></ol>
            </div>
            <div id="sidebar-resize-handle" class="sidebar-resize-handle"></div>
        </nav>

        <div id="page-wrapper" class="page-wrapper">

            <div class="page">
                <div id="menu-bar-hover-placeholder"></div>
                <div id="menu-bar" class="menu-bar sticky bordered">
                    <div class="left-buttons">
                        <button id="sidebar-toggle" class="icon-button" type="button" title="Toggle Table of Contents" aria-label="Toggle Table of Contents" aria-controls="sidebar">
                            <i class="fa fa-bars"></i>
                        </button>
                        <button id="theme-toggle" class="icon-button" type="button" title="Change theme" aria-label="Change theme" aria-haspopup="true" aria-expanded="false" aria-controls="theme-list">
                            <i class="fa fa-paint-brush"></i>
                        </button>
                        <ul id="theme-list" class="theme-popup" aria-label="Themes" role="menu">
                            <li role="none"><button role="menuitem" class="theme" id="light">Light (default)</button></li>
                            <li role="none"><button role="menuitem" class="theme" id="rust">Rust</button></li>
                            <li role="none"><button role="menuitem" class="theme" id="coal">Coal</button></li>
                            <li role="none"><button role="menuitem" class="theme" id="navy">Navy</button></li>
                            <li role="none"><button role="menuitem" class="theme" id="ayu">Ayu</button></li>
                        </ul>
                        <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
                            <i class="fa fa-search"></i>
                        </button>
                        <div class="version-picker">
                            <div class="dropdown">
                                <div class="select">
                                    <span></span>
                                    <i class="fa fa-chevron-down"></i>
                                </div>
                                <input type="hidden" name="version">
                                <ul class="dropdown-menu">
                                    <!-- Versions will be added dynamically in version-picker.js -->
                                </ul>
                            </div>
                        </div>
                    </div>

                    <h1 class="menu-title">Synapse</h1>

                    <div class="right-buttons">
                        <a href="print.html" title="Print this book" aria-label="Print this book">
                            <i id="print-button" class="fa fa-print"></i>
                        </a>
                        <a href="https://github.com/element-hq/synapse" title="Git repository" aria-label="Git repository">
                            <i id="git-repository-button" class="fa fa-github"></i>
                        </a>
                        <a href="https://github.com/element-hq/synapse/edit/develop/docs/openid.md" title="Suggest an edit" aria-label="Suggest an edit">
                            <i id="git-edit-button" class="fa fa-edit"></i>
                        </a>
                    </div>
                </div>

                <div id="search-wrapper" class="hidden">
                    <form id="searchbar-outer" class="searchbar-outer">
                        <input type="search" id="searchbar" name="searchbar" placeholder="Search this book ..." aria-controls="searchresults-outer" aria-describedby="searchresults-header">
                    </form>
                    <div id="searchresults-outer" class="searchresults-outer hidden">
                        <div id="searchresults-header" class="searchresults-header"></div>
                        <ul id="searchresults">
                        </ul>
                    </div>
                </div>
                <!-- Apply ARIA attributes after the sidebar and the sidebar toggle button are added to the DOM -->
                <script type="text/javascript">
                    document.getElementById('sidebar-toggle').setAttribute('aria-expanded', sidebar === 'visible');
                    document.getElementById('sidebar').setAttribute('aria-hidden', sidebar !== 'visible');
                    Array.from(document.querySelectorAll('#sidebar a')).forEach(function(link) {
                        link.setAttribute('tabIndex', sidebar === 'visible' ? 0 : -1);
                    });
                </script>

                <div id="content" class="content">
                    <main>
                        <!-- Page table of contents -->
                        <div class="sidetoc">
                            <nav class="pagetoc"></nav>
                        </div>

                        <h1 id="configuring-synapse-to-authenticate-against-an-openid-connect-provider"><a class="header" href="#configuring-synapse-to-authenticate-against-an-openid-connect-provider">Configuring Synapse to authenticate against an OpenID Connect provider</a></h1>
<p>Synapse can be configured to use an OpenID Connect Provider (OP) for
authentication, instead of its own local password database.</p>
<p>Any OP should work with Synapse, as long as it supports the authorization code
flow. There are a few options for that:</p>
<ul>
<li>
<p>start a local OP. Synapse has been tested with <a href="https://www.ory.sh/docs/hydra/">Hydra</a> and
<a href="https://github.com/dexidp/dex">Dex</a>.  Note that for an OP to work, it should be served under a
secure (HTTPS) origin.  A certificate signed with a self-signed, locally
trusted CA should work. In that case, start Synapse with a <code>SSL_CERT_FILE</code>
environment variable set to the path of the CA.</p>
</li>
<li>
<p>set up a SaaS OP, like <a href="https://developers.google.com/identity/protocols/oauth2/openid-connect">Google</a>, <a href="https://auth0.com/">Auth0</a> or
<a href="https://www.okta.com/">Okta</a>. Synapse has been tested with Auth0 and Google.</p>
</li>
</ul>
<p>It may also be possible to use other OAuth2 providers which provide the
<a href="https://tools.ietf.org/html/rfc6749#section-4.1">authorization code grant type</a>,
such as <a href="https://developer.github.com/apps/building-oauth-apps/authorizing-oauth-apps">Github</a>.</p>
<h2 id="preparing-synapse"><a class="header" href="#preparing-synapse">Preparing Synapse</a></h2>
<p>The OpenID integration in Synapse uses the
<a href="https://pypi.org/project/Authlib/"><code>authlib</code></a> library, which must be installed
as follows:</p>
<ul>
<li>
<p>The relevant libraries are included in the Docker images and Debian packages
provided by <code>matrix.org</code> so no further action is needed.</p>
</li>
<li>
<p>If you installed Synapse into a virtualenv, run <code>/path/to/env/bin/pip install matrix-synapse[oidc]</code> to install the necessary dependencies.</p>
</li>
<li>
<p>For other installation mechanisms, see the documentation provided by the
maintainer.</p>
</li>
</ul>
<p>To enable the OpenID integration, you should then add a section to the <code>oidc_providers</code>
setting in your configuration file.
See the <a href="usage/configuration/config_documentation.html#oidc_providers">configuration manual</a> for some sample settings, as well as
the text below for example configurations for specific providers.</p>
<h2 id="oidc-back-channel-logout"><a class="header" href="#oidc-back-channel-logout">OIDC Back-Channel Logout</a></h2>
<p>Synapse supports receiving <a href="https://openid.net/specs/openid-connect-backchannel-1_0.html">OpenID Connect Back-Channel Logout</a> notifications.</p>
<p>This lets the OpenID Connect Provider notify Synapse when a user logs out, so that Synapse can end that user session.
This feature can be enabled by setting the <code>backchannel_logout_enabled</code> property to <code>true</code> in the provider configuration, and setting the following URL as destination for Back-Channel Logout notifications in your OpenID Connect Provider: <code>[synapse public baseurl]/_synapse/client/oidc/backchannel_logout</code></p>
<h2 id="sample-configs"><a class="header" href="#sample-configs">Sample configs</a></h2>
<p>Here are a few configs for providers that should work with Synapse.</p>
<h3 id="microsoft-azure-active-directory"><a class="header" href="#microsoft-azure-active-directory">Microsoft Azure Active Directory</a></h3>
<p>Azure AD can act as an OpenID Connect Provider. Register a new application under
<em>App registrations</em> in the Azure AD management console. The RedirectURI for your
application should point to your matrix server:
<code>[synapse public baseurl]/_synapse/client/oidc/callback</code></p>
<p>Go to <em>Certificates &amp; secrets</em> and register a new client secret. Make note of your
Directory (tenant) ID as it will be used in the Azure links.
Edit your Synapse config file and change the <code>oidc_config</code> section:</p>
<pre><code class="language-yaml">oidc_providers:
  - idp_id: microsoft
    idp_name: Microsoft
    issuer: &quot;https://login.microsoftonline.com/&lt;tenant id&gt;/v2.0&quot;
    client_id: &quot;&lt;client id&gt;&quot;
    client_secret: &quot;&lt;client secret&gt;&quot;
    scopes: [&quot;openid&quot;, &quot;profile&quot;]
    authorization_endpoint: &quot;https://login.microsoftonline.com/&lt;tenant id&gt;/oauth2/v2.0/authorize&quot;
    token_endpoint: &quot;https://login.microsoftonline.com/&lt;tenant id&gt;/oauth2/v2.0/token&quot;
    userinfo_endpoint: &quot;https://graph.microsoft.com/oidc/userinfo&quot;

    user_mapping_provider:
      config:
        localpart_template: &quot;{{ user.preferred_username.split('@')[0] }}&quot;
        display_name_template: &quot;{{ user.name }}&quot;
</code></pre>
<h3 id="apple"><a class="header" href="#apple">Apple</a></h3>
<p>Configuring &quot;Sign in with Apple&quot; (SiWA) requires an Apple Developer account.</p>
<p>You will need to create a new &quot;Services ID&quot; for SiWA, and create and download a
private key with &quot;SiWA&quot; enabled.</p>
<p>As well as the private key file, you will need:</p>
<ul>
<li>Client ID: the &quot;identifier&quot; you gave the &quot;Services ID&quot;</li>
<li>Team ID: a 10-character ID associated with your developer account.</li>
<li>Key ID: the 10-character identifier for the key.</li>
</ul>
<p><a href="https://help.apple.com/developer-account/?lang=en#/dev77c875b7e">Apple's developer documentation</a>
has more information on setting up SiWA.</p>
<p>The synapse config will look like this:</p>
<pre><code class="language-yaml">  - idp_id: apple
    idp_name: Apple
    issuer: &quot;https://appleid.apple.com&quot;
    client_id: &quot;your-client-id&quot; # Set to the &quot;identifier&quot; for your &quot;ServicesID&quot;
    client_auth_method: &quot;client_secret_post&quot;
    client_secret_jwt_key:
      key_file: &quot;/path/to/AuthKey_KEYIDCODE.p8&quot;  # point to your key file
      jwt_header:
        alg: ES256
        kid: &quot;KEYIDCODE&quot;   # Set to the 10-char Key ID
      jwt_payload:
        iss: TEAMIDCODE    # Set to the 10-char Team ID
    scopes: [&quot;name&quot;, &quot;email&quot;, &quot;openid&quot;]
    authorization_endpoint: https://appleid.apple.com/auth/authorize?response_mode=form_post
    user_mapping_provider:
      config:
        email_template: &quot;{{ user.email }}&quot;
</code></pre>
<h3 id="auth0"><a class="header" href="#auth0">Auth0</a></h3>
<p><a href="https://auth0.com/">Auth0</a> is a hosted SaaS IdP solution.</p>
<ol>
<li>
<p>Create a regular web application for Synapse</p>
</li>
<li>
<p>Set the Allowed Callback URLs to <code>[synapse public baseurl]/_synapse/client/oidc/callback</code></p>
</li>
<li>
<p>Add a rule with any name to add the <code>preferred_username</code> claim. 
(See https://auth0.com/docs/customize/rules/create-rules for more information on how to create rules.)</p>
<details>
 <summary>Code sample</summary>
<pre><code class="language-js">function addPersistenceAttribute(user, context, callback) {
  user.user_metadata = user.user_metadata || {};
  user.user_metadata.preferred_username = user.user_metadata.preferred_username || user.user_id;
  context.idToken.preferred_username = user.user_metadata.preferred_username;

  auth0.users.updateUserMetadata(user.user_id, user.user_metadata)
    .then(function(){
        callback(null, user, context);
    })
    .catch(function(err){
        callback(err);
    });
}
</code></pre>
</li>
</ol>
</details>
<p>Synapse config:</p>
<pre><code class="language-yaml">oidc_providers:
  - idp_id: auth0
    idp_name: Auth0
    issuer: &quot;https://your-tier.eu.auth0.com/&quot; # TO BE FILLED
    client_id: &quot;your-client-id&quot; # TO BE FILLED
    client_secret: &quot;your-client-secret&quot; # TO BE FILLED
    scopes: [&quot;openid&quot;, &quot;profile&quot;]
    user_mapping_provider:
      config:
        localpart_template: &quot;{{ user.preferred_username }}&quot;
        display_name_template: &quot;{{ user.name }}&quot;
</code></pre>
<h3 id="authentik"><a class="header" href="#authentik">Authentik</a></h3>
<p><a href="https://goauthentik.io/">Authentik</a> is an open-source IdP solution.</p>
<ol>
<li>Create a provider in Authentik, with type OAuth2/OpenID.</li>
<li>The parameters are:</li>
</ol>
<ul>
<li>Client Type: Confidential</li>
<li>JWT Algorithm: RS256</li>
<li>Scopes: OpenID, Email and Profile</li>
<li>RSA Key: Select any available key</li>
<li>Redirect URIs: <code>[synapse public baseurl]/_synapse/client/oidc/callback</code></li>
</ul>
<ol start="3">
<li>Create an application for synapse in Authentik and link it to the provider.</li>
<li>Note the slug of your application, Client ID and Client Secret.</li>
</ol>
<p>Note: RSA keys must be used for signing for Authentik, ECC keys do not work.</p>
<p>Synapse config:</p>
<pre><code class="language-yaml">oidc_providers:
  - idp_id: authentik
    idp_name: authentik
    discover: true
    issuer: &quot;https://your.authentik.example.org/application/o/your-app-slug/&quot; # TO BE FILLED: domain and slug
    client_id: &quot;your client id&quot; # TO BE FILLED
    client_secret: &quot;your client secret&quot; # TO BE FILLED
    scopes:
      - &quot;openid&quot;
      - &quot;profile&quot;
      - &quot;email&quot;
    user_mapping_provider:
      config:
        localpart_template: &quot;{{ user.preferred_username }}&quot;
        display_name_template: &quot;{{ user.preferred_username|capitalize }}&quot; # TO BE FILLED: If your users have names in Authentik and you want those in Synapse, this should be replaced with user.name|capitalize.
</code></pre>
<h3 id="dex"><a class="header" href="#dex">Dex</a></h3>
<p><a href="https://github.com/dexidp/dex">Dex</a> is a simple, open-source OpenID Connect Provider.
Although it is designed to help building a full-blown provider with an
external database, it can be configured with static passwords in a config file.</p>
<p>Follow the <a href="https://dexidp.io/docs/getting-started/">Getting Started guide</a>
to install Dex.</p>
<p>Edit <code>examples/config-dev.yaml</code> config file from the Dex repo to add a client:</p>
<pre><code class="language-yaml">staticClients:
- id: synapse
  secret: secret
  redirectURIs:
  - '[synapse public baseurl]/_synapse/client/oidc/callback'
  name: 'Synapse'
</code></pre>
<p>Run with <code>dex serve examples/config-dev.yaml</code>.</p>
<p>Synapse config:</p>
<pre><code class="language-yaml">oidc_providers:
  - idp_id: dex
    idp_name: &quot;My Dex server&quot;
    skip_verification: true # This is needed as Dex is served on an insecure endpoint
    issuer: &quot;http://127.0.0.1:5556/dex&quot;
    client_id: &quot;synapse&quot;
    client_secret: &quot;secret&quot;
    scopes: [&quot;openid&quot;, &quot;profile&quot;]
    user_mapping_provider:
      config:
        localpart_template: &quot;{{ user.name }}&quot;
        display_name_template: &quot;{{ user.name|capitalize }}&quot;
</code></pre>
<h3 id="django-oauth-toolkit"><a class="header" href="#django-oauth-toolkit">Django OAuth Toolkit</a></h3>
<p><a href="https://github.com/jazzband/django-oauth-toolkit">django-oauth-toolkit</a> is a
Django application providing out of the box all the endpoints, data and logic
needed to add OAuth2 capabilities to your Django projects. It supports
<a href="https://django-oauth-toolkit.readthedocs.io/en/latest/oidc.html">OpenID Connect too</a>.</p>
<p>Configuration on Django's side:</p>
<ol>
<li>Add an application: <code>https://example.com/admin/oauth2_provider/application/add/</code> and choose parameters like this:</li>
</ol>
<ul>
<li><code>Redirect uris</code>: <code>https://synapse.example.com/_synapse/client/oidc/callback</code></li>
<li><code>Client type</code>: <code>Confidential</code></li>
<li><code>Authorization grant type</code>: <code>Authorization code</code></li>
<li><code>Algorithm</code>: <code>HMAC with SHA-2 256</code></li>
</ul>
<ol start="2">
<li>
<p>You can <a href="https://django-oauth-toolkit.readthedocs.io/en/latest/oidc.html#customizing-the-oidc-responses">customize the claims</a> Django gives to synapse (optional):</p>
<details>
 <summary>Code sample</summary>
<pre><code class="language-python">class CustomOAuth2Validator(OAuth2Validator):

    def get_additional_claims(self, request):
        return {
            &quot;sub&quot;: request.user.email,
            &quot;email&quot;: request.user.email,
            &quot;first_name&quot;: request.user.first_name,
            &quot;last_name&quot;: request.user.last_name,
        }
</code></pre>
</details>
</li>
</ol>
<p>Your synapse config is then:</p>
<pre><code class="language-yaml">oidc_providers:
  - idp_id: django_example
    idp_name: &quot;Django Example&quot;
    issuer: &quot;https://example.com/o/&quot;
    client_id: &quot;your-client-id&quot;  # CHANGE ME
    client_secret: &quot;your-client-secret&quot;  # CHANGE ME
    scopes: [&quot;openid&quot;]
    user_profile_method: &quot;userinfo_endpoint&quot;  # needed because oauth-toolkit does not include user information in the authorization response
    user_mapping_provider:
      config:
        localpart_template: &quot;{{ user.email.split('@')[0] }}&quot;
        display_name_template: &quot;{{ user.first_name }} {{ user.last_name }}&quot;
        email_template: &quot;{{ user.email }}&quot;
</code></pre>
<h3 id="facebook"><a class="header" href="#facebook">Facebook</a></h3>
<ol start="0">
<li>You will need a Facebook developer account. You can register for one
<a href="https://developers.facebook.com/async/registration/">here</a>.</li>
<li>On the <a href="https://developers.facebook.com/apps/">apps</a> page of the developer
console, &quot;Create App&quot;, and choose &quot;Build Connected Experiences&quot;.</li>
<li>Once the app is created, add &quot;Facebook Login&quot; and choose &quot;Web&quot;. You don't
need to go through the whole form here.</li>
<li>In the left-hand menu, open &quot;Products&quot;/&quot;Facebook Login&quot;/&quot;Settings&quot;.
<ul>
<li>Add <code>[synapse public baseurl]/_synapse/client/oidc/callback</code> as an OAuth Redirect
URL.</li>
</ul>
</li>
<li>In the left-hand menu, open &quot;Settings/Basic&quot;. Here you can copy the &quot;App ID&quot;
and &quot;App Secret&quot; for use below.</li>
</ol>
<p>Synapse config:</p>
<pre><code class="language-yaml">  - idp_id: facebook
    idp_name: Facebook
    idp_brand: &quot;facebook&quot;  # optional: styling hint for clients
    discover: false
    issuer: &quot;https://www.facebook.com&quot;
    client_id: &quot;your-client-id&quot; # TO BE FILLED
    client_secret: &quot;your-client-secret&quot; # TO BE FILLED
    scopes: [&quot;openid&quot;, &quot;email&quot;]
    authorization_endpoint: &quot;https://facebook.com/dialog/oauth&quot;
    token_endpoint: &quot;https://graph.facebook.com/v9.0/oauth/access_token&quot;
    jwks_uri: &quot;https://www.facebook.com/.well-known/oauth/openid/jwks/&quot;
    user_mapping_provider:
      config:
        display_name_template: &quot;{{ user.name }}&quot;
        email_template: &quot;{{ user.email }}&quot;
</code></pre>
<p>Relevant documents:</p>
<ul>
<li><a href="https://developers.facebook.com/docs/facebook-login/manually-build-a-login-flow">Manually Build a Login Flow</a></li>
<li><a href="https://developers.facebook.com/docs/graph-api/using-graph-api/">Using Facebook's Graph API</a></li>
<li><a href="https://developers.facebook.com/docs/graph-api/reference/user">Reference to the User endpoint</a></li>
</ul>
<p>Facebook do have an <a href="https://www.facebook.com/.well-known/openid-configuration">OIDC discovery endpoint</a>,
but it has a <code>response_types_supported</code> which excludes &quot;code&quot; (which we rely on, and
is even mentioned in their <a href="https://developers.facebook.com/docs/facebook-login/manually-build-a-login-flow#login">documentation</a>),
so we have to disable discovery and configure the URIs manually.</p>
<h3 id="github"><a class="header" href="#github">GitHub</a></h3>
<p><a href="https://developer.github.com/apps/building-oauth-apps/authorizing-oauth-apps">GitHub</a> is a bit special as it is not an OpenID Connect compliant provider, but
just a regular OAuth2 provider.</p>
<p>The <a href="https://developer.github.com/v3/users/#get-the-authenticated-user"><code>/user</code> API endpoint</a>
can be used to retrieve information on the authenticated user. As the Synapse
login mechanism needs an attribute to uniquely identify users, and that endpoint
does not return a <code>sub</code> property, an alternative <code>subject_claim</code> has to be set.</p>
<ol>
<li>Create a new OAuth application: <a href="https://github.com/settings/applications/new">https://github.com/settings/applications/new</a>.</li>
<li>Set the callback URL to <code>[synapse public baseurl]/_synapse/client/oidc/callback</code>.</li>
</ol>
<p>Synapse config:</p>
<pre><code class="language-yaml">oidc_providers:
  - idp_id: github
    idp_name: Github
    idp_brand: &quot;github&quot;  # optional: styling hint for clients
    discover: false
    issuer: &quot;https://github.com/&quot;
    client_id: &quot;your-client-id&quot; # TO BE FILLED
    client_secret: &quot;your-client-secret&quot; # TO BE FILLED
    authorization_endpoint: &quot;https://github.com/login/oauth/authorize&quot;
    token_endpoint: &quot;https://github.com/login/oauth/access_token&quot;
    userinfo_endpoint: &quot;https://api.github.com/user&quot;
    scopes: [&quot;read:user&quot;]
    user_mapping_provider:
      config:
        subject_claim: &quot;id&quot;
        localpart_template: &quot;{{ user.login }}&quot;
        display_name_template: &quot;{{ user.name }}&quot;
</code></pre>
<h3 id="gitlab"><a class="header" href="#gitlab">GitLab</a></h3>
<ol>
<li>Create a <a href="https://gitlab.com/profile/applications">new application</a>.</li>
<li>Add the <code>read_user</code> and <code>openid</code> scopes.</li>
<li>Add this Callback URL: <code>[synapse public baseurl]/_synapse/client/oidc/callback</code></li>
</ol>
<p>Synapse config:</p>
<pre><code class="language-yaml">oidc_providers:
  - idp_id: gitlab
    idp_name: Gitlab
    idp_brand: &quot;gitlab&quot;  # optional: styling hint for clients
    issuer: &quot;https://gitlab.com/&quot;
    client_id: &quot;your-client-id&quot; # TO BE FILLED
    client_secret: &quot;your-client-secret&quot; # TO BE FILLED
    client_auth_method: &quot;client_secret_post&quot;
    scopes: [&quot;openid&quot;, &quot;read_user&quot;]
    user_profile_method: &quot;userinfo_endpoint&quot;
    user_mapping_provider:
      config:
        localpart_template: '{{ user.nickname }}'
        display_name_template: '{{ user.name }}'
</code></pre>
<h3 id="gitea"><a class="header" href="#gitea">Gitea</a></h3>
<p>Gitea is, like Github, not an OpenID provider, but just an OAuth2 provider.</p>
<p>The <a href="https://try.gitea.io/api/swagger#/user/userGetCurrent"><code>/user</code> API endpoint</a>
can be used to retrieve information on the authenticated user. As the Synapse
login mechanism needs an attribute to uniquely identify users, and that endpoint
does not return a <code>sub</code> property, an alternative <code>subject_claim</code> has to be set.</p>
<ol>
<li>Create a new application.</li>
<li>Add this Callback URL: <code>[synapse public baseurl]/_synapse/client/oidc/callback</code></li>
</ol>
<p>Synapse config:</p>
<pre><code class="language-yaml">oidc_providers:
  - idp_id: gitea
    idp_name: Gitea
    discover: false
    issuer: &quot;https://your-gitea.com/&quot;
    client_id: &quot;your-client-id&quot; # TO BE FILLED
    client_secret: &quot;your-client-secret&quot; # TO BE FILLED
    client_auth_method: client_secret_post
    scopes: [] # Gitea doesn't support Scopes
    authorization_endpoint: &quot;https://your-gitea.com/login/oauth/authorize&quot;
    token_endpoint: &quot;https://your-gitea.com/login/oauth/access_token&quot;
    userinfo_endpoint: &quot;https://your-gitea.com/api/v1/user&quot;
    user_mapping_provider:
      config:
        subject_claim: &quot;id&quot;
        localpart_template: &quot;{{ user.login }}&quot;
        display_name_template: &quot;{{ user.full_name }}&quot;
</code></pre>
<h3 id="google"><a class="header" href="#google">Google</a></h3>
<p><a href="https://developers.google.com/identity/protocols/oauth2/openid-connect">Google</a> is an OpenID certified authentication and authorisation provider.</p>
<ol>
<li>Set up a project in the Google API Console (see 
<a href="https://developers.google.com/identity/protocols/oauth2/openid-connect#appsetup">documentation</a>).</li>
<li>Add an &quot;OAuth Client ID&quot; for a Web Application under &quot;Credentials&quot;.</li>
<li>Copy the Client ID and Client Secret, and add the following to your synapse config:
<pre><code class="language-yaml">oidc_providers:
  - idp_id: google
    idp_name: Google
    idp_brand: &quot;google&quot;  # optional: styling hint for clients
    issuer: &quot;https://accounts.google.com/&quot;
    client_id: &quot;your-client-id&quot; # TO BE FILLED
    client_secret: &quot;your-client-secret&quot; # TO BE FILLED
    scopes: [&quot;openid&quot;, &quot;profile&quot;, &quot;email&quot;] # email is optional, read below
    user_mapping_provider:
      config:
        localpart_template: &quot;{{ user.given_name|lower }}&quot;
        display_name_template: &quot;{{ user.name }}&quot;
        email_template: &quot;{{ user.email }}&quot; # needs &quot;email&quot; in scopes above
</code></pre>
</li>
<li>Back in the Google console, add this Authorized redirect URI: <code>[synapse public baseurl]/_synapse/client/oidc/callback</code>.</li>
</ol>
<h3 id="keycloak"><a class="header" href="#keycloak">Keycloak</a></h3>
<p><a href="https://www.keycloak.org/docs/latest/server_admin/#sso-protocols">Keycloak</a> is an opensource IdP maintained by Red Hat.</p>
<p>Keycloak supports OIDC Back-Channel Logout, which sends logout notification to Synapse, so that Synapse users get logged out when they log out from Keycloak.
This can be optionally enabled by setting <code>backchannel_logout_enabled</code> to <code>true</code> in the Synapse configuration, and by setting the &quot;Backchannel Logout URL&quot; in Keycloak.</p>
<p>Follow the <a href="https://www.keycloak.org/guides">Getting Started Guide</a> to install Keycloak and set up a realm.</p>
<ol>
<li>
<p>Click <code>Clients</code> in the sidebar and click <code>Create</code></p>
</li>
<li>
<p>Fill in the fields as below:</p>
</li>
</ol>
<table><thead><tr><th>Field</th><th>Value</th></tr></thead><tbody>
<tr><td>Client ID</td><td><code>synapse</code></td></tr>
<tr><td>Client Protocol</td><td><code>openid-connect</code></td></tr>
</tbody></table>
<ol start="3">
<li>Click <code>Save</code></li>
<li>Fill in the fields as below:</li>
</ol>
<table><thead><tr><th>Field</th><th>Value</th></tr></thead><tbody>
<tr><td>Client ID</td><td><code>synapse</code></td></tr>
<tr><td>Enabled</td><td><code>On</code></td></tr>
<tr><td>Client Protocol</td><td><code>openid-connect</code></td></tr>
<tr><td>Access Type</td><td><code>confidential</code></td></tr>
<tr><td>Valid Redirect URIs</td><td><code>[synapse public baseurl]/_synapse/client/oidc/callback</code></td></tr>
<tr><td>Backchannel Logout URL (optional)</td><td> <code>[synapse public baseurl]/_synapse/client/oidc/backchannel_logout</code></td></tr>
<tr><td>Backchannel Logout Session Required (optional)</td><td> <code>On</code></td></tr>
</tbody></table>
<ol start="5">
<li>Click <code>Save</code></li>
<li>On the Credentials tab, update the fields:</li>
</ol>
<table><thead><tr><th>Field</th><th>Value</th></tr></thead><tbody>
<tr><td>Client Authenticator</td><td><code>Client ID and Secret</code></td></tr>
</tbody></table>
<ol start="7">
<li>Click <code>Regenerate Secret</code></li>
<li>Copy Secret</li>
</ol>
<pre><code class="language-yaml">oidc_providers:
  - idp_id: keycloak
    idp_name: &quot;My KeyCloak server&quot;
    issuer: &quot;https://127.0.0.1:8443/realms/{realm_name}&quot;
    client_id: &quot;synapse&quot;
    client_secret: &quot;copy secret generated from above&quot;
    scopes: [&quot;openid&quot;, &quot;profile&quot;]
    user_mapping_provider:
      config:
        localpart_template: &quot;{{ user.preferred_username }}&quot;
        display_name_template: &quot;{{ user.name }}&quot;
    backchannel_logout_enabled: true # Optional
</code></pre>
<h3 id="lemonldap"><a class="header" href="#lemonldap">LemonLDAP</a></h3>
<p><a href="https://lemonldap-ng.org/">LemonLDAP::NG</a> is an open-source IdP solution.</p>
<ol>
<li>Create an OpenID Connect Relying Parties in LemonLDAP::NG</li>
<li>The parameters are:</li>
</ol>
<ul>
<li>Client ID under the basic menu of the new Relying Parties (<code>Options &gt; Basic &gt; Client ID</code>)</li>
<li>Client secret (<code>Options &gt; Basic &gt; Client secret</code>)</li>
<li>JWT Algorithm: RS256 within the security menu of the new Relying Parties
(<code>Options &gt; Security &gt; ID Token signature algorithm</code> and <code>Options &gt; Security &gt; Access Token signature algorithm</code>)</li>
<li>Scopes: OpenID, Email and Profile</li>
<li>Force claims into <code>id_token</code>
(<code>Options &gt; Advanced &gt; Force claims to be returned in ID Token</code>)</li>
<li>Allowed redirection addresses for login (<code>Options &gt; Basic &gt; Allowed redirection addresses for login</code> ) :
<code>[synapse public baseurl]/_synapse/client/oidc/callback</code></li>
</ul>
<p>Synapse config:</p>
<pre><code class="language-yaml">oidc_providers:
  - idp_id: lemonldap
    idp_name: lemonldap
    discover: true
    issuer: &quot;https://auth.example.org/&quot; # TO BE FILLED: replace with your domain
    client_id: &quot;your client id&quot; # TO BE FILLED
    client_secret: &quot;your client secret&quot; # TO BE FILLED
    scopes:
      - &quot;openid&quot;
      - &quot;profile&quot;
      - &quot;email&quot;
    user_mapping_provider:
      config:
        localpart_template: &quot;{{ user.preferred_username }}}&quot;
        # TO BE FILLED: If your users have names in LemonLDAP::NG and you want those in Synapse, this should be replaced with user.name|capitalize or any valid filter.
        display_name_template: &quot;{{ user.preferred_username|capitalize }}&quot;
</code></pre>
<h3 id="mastodon"><a class="header" href="#mastodon">Mastodon</a></h3>
<p><a href="https://docs.joinmastodon.org/">Mastodon</a> instances provide an <a href="https://docs.joinmastodon.org/spec/oauth/">OAuth API</a>, allowing those instances to be used as a single sign-on provider for Synapse.</p>
<p>The first step is to register Synapse as an application with your Mastodon instance, using the <a href="https://docs.joinmastodon.org/methods/apps/#create">Create an application API</a> (see also <a href="https://docs.joinmastodon.org/client/token/">here</a>). There are several ways to do this, but in the example below we are using CURL.</p>
<p>This example assumes that:</p>
<ul>
<li>the Mastodon instance website URL is <code>https://your.mastodon.instance.url</code>, and</li>
<li>Synapse will be registered as an app named <code>my_synapse_app</code>.</li>
</ul>
<p>Send the following request, substituting the value of <code>synapse_public_baseurl</code> from your Synapse installation.</p>
<pre><code class="language-sh">curl -d &quot;client_name=my_synapse_app&amp;redirect_uris=https://[synapse_public_baseurl]/_synapse/client/oidc/callback&quot; -X POST https://your.mastodon.instance.url/api/v1/apps
</code></pre>
<p>You should receive a response similar to the following. Make sure to save it.</p>
<pre><code class="language-json">{&quot;client_id&quot;:&quot;someclientid_123&quot;,&quot;client_secret&quot;:&quot;someclientsecret_123&quot;,&quot;id&quot;:&quot;12345&quot;,&quot;name&quot;:&quot;my_synapse_app&quot;,&quot;redirect_uri&quot;:&quot;https://[synapse_public_baseurl]/_synapse/client/oidc/callback&quot;,&quot;website&quot;:null,&quot;vapid_key&quot;:&quot;somerandomvapidkey_123&quot;}
</code></pre>
<p>As the Synapse login mechanism needs an attribute to uniquely identify users, and Mastodon's endpoint does not return a <code>sub</code> property, an alternative <code>subject_template</code> has to be set. Your Synapse configuration should include the following:</p>
<pre><code class="language-yaml">oidc_providers:
  - idp_id: my_mastodon
    idp_name: &quot;Mastodon Instance Example&quot;
    discover: false
    issuer: &quot;https://your.mastodon.instance.url/@admin&quot;
    client_id: &quot;someclientid_123&quot;    
    client_secret: &quot;someclientsecret_123&quot;
    authorization_endpoint: &quot;https://your.mastodon.instance.url/oauth/authorize&quot;
    token_endpoint: &quot;https://your.mastodon.instance.url/oauth/token&quot;
    userinfo_endpoint: &quot;https://your.mastodon.instance.url/api/v1/accounts/verify_credentials&quot;
    scopes: [&quot;read&quot;]
    user_mapping_provider:
      config:
        subject_template: &quot;{{ user.id }}&quot;
        localpart_template: &quot;{{ user.username }}&quot;
        display_name_template: &quot;{{ user.display_name }}&quot;
</code></pre>
<p>Note that the fields <code>client_id</code> and <code>client_secret</code> are taken from the CURL response above.</p>
<h3 id="shibboleth-with-oidc-plugin"><a class="header" href="#shibboleth-with-oidc-plugin">Shibboleth with OIDC Plugin</a></h3>
<p><a href="https://www.shibboleth.net/">Shibboleth</a> is an open Standard IdP solution widely used by Universities.</p>
<ol>
<li>Shibboleth needs the <a href="https://shibboleth.atlassian.net/wiki/spaces/IDPPLUGINS/pages/1376878976/OIDC+OP">OIDC Plugin</a> installed and working correctly.</li>
<li>Create a new config on the IdP Side, ensure that the <code>client_id</code> and <code>client_secret</code>
are randomly generated data.</li>
</ol>
<pre><code class="language-json">{
    &quot;client_id&quot;: &quot;SOME-CLIENT-ID&quot;,
    &quot;client_secret&quot;: &quot;SOME-SUPER-SECRET-SECRET&quot;,
    &quot;response_types&quot;: [&quot;code&quot;],
    &quot;grant_types&quot;: [&quot;authorization_code&quot;],
    &quot;scope&quot;: &quot;openid profile email&quot;,
    &quot;redirect_uris&quot;: [&quot;https://[synapse public baseurl]/_synapse/client/oidc/callback&quot;]
}
</code></pre>
<p>Synapse config:</p>
<pre><code class="language-yaml">oidc_providers:
  # Shibboleth IDP
  #
  - idp_id: shibboleth
    idp_name: &quot;Shibboleth Login&quot;
    discover: true
    issuer: &quot;https://YOUR-IDP-URL.TLD&quot;
    client_id: &quot;YOUR_CLIENT_ID&quot;
    client_secret: &quot;YOUR-CLIENT-SECRECT-FROM-YOUR-IDP&quot;
    scopes: [&quot;openid&quot;, &quot;profile&quot;, &quot;email&quot;]
    allow_existing_users: true
    user_profile_method: &quot;userinfo_endpoint&quot;
    user_mapping_provider:
      config:
        subject_claim: &quot;sub&quot;
        localpart_template: &quot;{{ user.sub.split('@')[0] }}&quot;
        display_name_template: &quot;{{ user.name }}&quot;
        email_template: &quot;{{ user.email }}&quot;
</code></pre>
<h3 id="twitch"><a class="header" href="#twitch">Twitch</a></h3>
<ol>
<li>Setup a developer account on <a href="https://dev.twitch.tv/">Twitch</a></li>
<li>Obtain the OAuth 2.0 credentials by <a href="https://dev.twitch.tv/console/apps/">creating an app</a></li>
<li>Add this OAuth Redirect URL: <code>[synapse public baseurl]/_synapse/client/oidc/callback</code></li>
</ol>
<p>Synapse config:</p>
<pre><code class="language-yaml">oidc_providers:
  - idp_id: twitch
    idp_name: Twitch
    issuer: &quot;https://id.twitch.tv/oauth2/&quot;
    client_id: &quot;your-client-id&quot; # TO BE FILLED
    client_secret: &quot;your-client-secret&quot; # TO BE FILLED
    client_auth_method: &quot;client_secret_post&quot;
    user_mapping_provider:
      config:
        localpart_template: &quot;{{ user.preferred_username }}&quot;
        display_name_template: &quot;{{ user.name }}&quot;
</code></pre>
<h3 id="twitter"><a class="header" href="#twitter">Twitter</a></h3>
<p><em>Using Twitter as an identity provider requires using Synapse 1.75.0 or later.</em></p>
<ol>
<li>Setup a developer account on <a href="https://developer.twitter.com/en/portal/dashboard">Twitter</a></li>
<li>Create a project &amp; app.</li>
<li>Enable user authentication and under &quot;Type of App&quot; choose &quot;Web App, Automated App or Bot&quot;.</li>
<li>Under &quot;App info&quot; set the callback URL to <code>[synapse public baseurl]/_synapse/client/oidc/callback</code>.</li>
<li>Obtain the OAuth 2.0 credentials under the &quot;Keys and tokens&quot; tab, copy the &quot;OAuth 2.0 Client ID and Client Secret&quot;</li>
</ol>
<p>Synapse config:</p>
<pre><code class="language-yaml">oidc_providers:
  - idp_id: twitter
    idp_name: Twitter
    idp_brand: &quot;twitter&quot;  # optional: styling hint for clients
    discover: false  # Twitter is not OpenID compliant.
    issuer: &quot;https://twitter.com/&quot;
    client_id: &quot;your-client-id&quot; # TO BE FILLED
    client_secret: &quot;your-client-secret&quot; # TO BE FILLED
    pkce_method: &quot;always&quot;
    # offline.access providers refresh tokens, tweet.read and users.read needed for userinfo request.
    scopes: [&quot;offline.access&quot;, &quot;tweet.read&quot;, &quot;users.read&quot;]
    authorization_endpoint: https://twitter.com/i/oauth2/authorize
    token_endpoint: https://api.twitter.com/2/oauth2/token
    userinfo_endpoint: https://api.twitter.com/2/users/me?user.fields=profile_image_url
    user_mapping_provider:
      config:
        subject_template: &quot;{{ user.data.id }}&quot;
        localpart_template: &quot;{{ user.data.username }}&quot;
        display_name_template: &quot;{{ user.data.name }}&quot;
        picture_template: &quot;{{ user.data.profile_image_url }}&quot;
</code></pre>
<h3 id="xwiki"><a class="header" href="#xwiki">XWiki</a></h3>
<p>Install <a href="https://extensions.xwiki.org/xwiki/bin/view/Extension/OpenID%20Connect/OpenID%20Connect%20Provider/">OpenID Connect Provider</a> extension in your <a href="https://www.xwiki.org">XWiki</a> instance.</p>
<p>Synapse config:</p>
<pre><code class="language-yaml">oidc_providers:
  - idp_id: xwiki
    idp_name: &quot;XWiki&quot;
    issuer: &quot;https://myxwikihost/xwiki/oidc/&quot;
    client_id: &quot;your-client-id&quot; # TO BE FILLED
    client_auth_method: none
    scopes: [&quot;openid&quot;, &quot;profile&quot;]
    user_profile_method: &quot;userinfo_endpoint&quot;
    user_mapping_provider:
      config:
        localpart_template: &quot;{{ user.preferred_username }}&quot;
        display_name_template: &quot;{{ user.name }}&quot;
</code></pre>

                    </main>

                    <nav class="nav-wrapper" aria-label="Page navigation">
                        <!-- Mobile navigation buttons -->
                            <a rel="prev" href="usage/configuration/user_authentication/single_sign_on/index.html" class="mobile-nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
                                <i class="fa fa-angle-left"></i>
                            </a>
                            <a rel="next" href="usage/configuration/user_authentication/single_sign_on/saml.html" class="mobile-nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
                                <i class="fa fa-angle-right"></i>
                            </a>
                        <div style="clear: both"></div>
                    </nav>
                </div>
            </div>

            <nav class="nav-wide-wrapper" aria-label="Page navigation">
                    <a rel="prev" href="usage/configuration/user_authentication/single_sign_on/index.html" class="nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
                        <i class="fa fa-angle-left"></i>
                    </a>
                    <a rel="next" href="usage/configuration/user_authentication/single_sign_on/saml.html" class="nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
                        <i class="fa fa-angle-right"></i>
                    </a>
            </nav>

        </div>

        <script type="text/javascript">
            window.playground_copyable = true;
        </script>
        <script src="elasticlunr.min.js" type="text/javascript" charset="utf-8"></script>
        <script src="mark.min.js" type="text/javascript" charset="utf-8"></script>
        <script src="searcher.js" type="text/javascript" charset="utf-8"></script>
        <script src="clipboard.min.js" type="text/javascript" charset="utf-8"></script>
        <script src="highlight.js" type="text/javascript" charset="utf-8"></script>
        <script src="book.js" type="text/javascript" charset="utf-8"></script>

        <!-- Custom JS scripts -->
        <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
        <script type="text/javascript" src="docs/website_files/version-picker.js"></script>
        <script type="text/javascript" src="docs/website_files/version.js"></script>
    </body>
</html>