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Implement SAML2 authentication #4267
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This was implemented in an odd way that left most of the work to the client, in a way that I really didn't understand. It's going to be a pain to maintain, so let's start by ripping it out.
It turns out we were relying on dateutil being pulled in transitively by pysaml2. There's no need for that bloat.
This is mostly factoring out the post-CAS-login code to somewhere we can reuse it for other SSO flows, but it also fixes the userid mapping while we're at it.
This implements both a SAML2 metadata endpoint (at `/_matrix/saml2/metadata.xml`), and a SAML2 response receiver (at `/_matrix/saml2/authn_response`). If the SAML2 response matches what's been configured, we complete the SSO login flow by redirecting to the client url (aka `RelayState` in SAML2 jargon) with a login token. What we don't yet have is anything to build a SAML2 request and redirect the user to the identity provider. That is left as an exercise for the reader.
Codecov Report
@@ Coverage Diff @@
## develop #4267 +/- ##
===========================================
- Coverage 73.63% 73.48% -0.15%
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Files 298 302 +4
Lines 29776 29884 +108
Branches 4875 4884 +9
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+ Hits 21925 21961 +36
- Misses 6419 6488 +69
- Partials 1432 1435 +3
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erikjohnston
approved these changes
Dec 7, 2018
richvdh
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Jan 8, 2019
Synapse 0.34.1rc1 (2019-01-08) ============================== Features -------- - Special-case a support user for use in verifying behaviour of a given server. The support user does not appear in user directory or monthly active user counts. ([\#4141](#4141), [\#4344](#4344)) - Support for serving .well-known files ([\#4262](#4262)) - Rework SAML2 authentication ([\#4265](#4265), [\#4267](#4267)) - SAML2 authentication: Initialise user display name from SAML2 data ([\#4272](#4272)) - Synapse can now have its conditional/extra dependencies installed by pip. This functionality can be used by using `pip install matrix-synapse[feature]`, where feature is a comma separated list with the possible values `email.enable_notifs`, `matrix-synapse-ldap3`, `postgres`, `resources.consent`, `saml2`, `url_preview`, and `test`. If you want to install all optional dependencies, you can use "all" instead. ([\#4298](#4298), [\#4325](#4325), [\#4327](#4327)) - Add routes for reading account data. ([\#4303](#4303)) - Add opt-in support for v2 rooms ([\#4307](#4307)) - Add a script to generate a clean config file ([\#4315](#4315)) - Return server data in /login response ([\#4319](#4319)) Bugfixes -------- - Fix contains_url check to be consistent with other instances in code-base and check that value is an instance of string. ([\#3405](#3405)) - Fix CAS login when username is not valid in an MXID ([\#4264](#4264)) - Send CORS headers for /media/config ([\#4279](#4279)) - Add 'sandbox' to CSP for media reprository ([\#4284](#4284)) - Make the new landing page prettier. ([\#4294](#4294)) - Fix deleting E2E room keys when using old SQLite versions. ([\#4295](#4295)) - The metric synapse_admin_mau:current previously did not update when config.mau_stats_only was set to True ([\#4305](#4305)) - Fixed per-room account data filters ([\#4309](#4309)) - Fix indentation in default config ([\#4313](#4313)) - Fix synapse:latest docker upload ([\#4316](#4316)) - Fix test_metric.py compatibility with prometheus_client 0.5. Contributed by Maarten de Vries <maarten@de-vri.es>. ([\#4317](#4317)) - Avoid packaging _trial_temp directory in -py3 debian packages ([\#4326](#4326)) - Check jinja version for consent resource ([\#4327](#4327)) - fix NPE in /messages by checking if all events were filtered out ([\#4330](#4330)) - Fix `python -m synapse.config` on Python 3. ([\#4356](#4356)) Deprecations and Removals ------------------------- - Remove the deprecated v1/register API on Python 2. It was never ported to Python 3. ([\#4334](#4334)) Internal Changes ---------------- - Getting URL previews of IP addresses no longer fails on Python 3. ([\#4215](#4215)) - drop undocumented dependency on dateutil ([\#4266](#4266)) - Update the example systemd config to use a virtualenv ([\#4273](#4273)) - Update link to kernel DCO guide ([\#4274](#4274)) - Make isort tox check print diff when it fails ([\#4283](#4283)) - Log room_id in Unknown room errors ([\#4297](#4297)) - Documentation improvements for coturn setup. Contributed by Krithin Sitaram. ([\#4333](#4333)) - Update pull request template to use absolute links ([\#4341](#4341)) - Update README to not lie about required restart when updating TLS certificates ([\#4343](#4343)) - Update debian packaging for compatibility with transitional package ([\#4349](#4349)) - Fix command hint to generate a config file when trying to start without a config file ([\#4353](#4353)) - Add better logging for unexpected errors while sending transactions ([\#4358](#4358))
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Is there any news on SAML auth? |
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This implements both a SAML2 metadata endpoint (at
/_matrix/saml2/metadata.xml), and a SAML2 response receiver (at/_matrix/saml2/authn_response). If the SAML2 response matches what's been configured, we complete the SSO login flow by redirecting to the client url (akaRelayStatein SAML2 jargon) with a login token.What we don't yet have is anything to build a SAML2 request and redirect the user to the identity provider. That is left as an exercise for the reader.
(builds on top of #4264, #4265, and #4266)