Commit Graph

914 Commits (80d44060c99e87c84da72fdfcaa9a508d38a26b4)

Author SHA1 Message Date
Patrick Cloke 3e4af36bc8
Rename get_tcp_replication to get_replication_command_handler. (#12192)
Since the object it returns is a ReplicationCommandHandler.

This is clean-up from adding support to Redis where the command handler
was added as an additional layer of abstraction from the TCP protocol.
2022-03-10 13:01:56 +00:00
David Robertson 313581e4e9
Use importlib.metadata to read requirements (#12088)
* Pull runtime dep checks into their own module
* Reimplement `check_requirements` using `importlib`

I've tried to make this clearer. We start by working out which of
Synapse's requirements we need to be installed here and now. I was
surprised that there wasn't an easier way to see which packages were
installed by a given extra.

I've pulled out the error messages into functions that deal with "is
this for an extra or not". And I've rearranged the loop over two
different sets of requirements into one loop with a "must be instaled"
flag.

I hope you agree that this is clearer.

* Test cases
2022-03-01 17:44:41 +00:00
Richard van der Hoff e24ff8ebe3
Remove `HomeServer.get_datastore()` (#12031)
The presence of this method was confusing, and mostly present for backwards
compatibility. Let's get rid of it.

Part of #11733
2022-02-23 11:04:02 +00:00
David Robertson 4ae956c8bb
Use version string helper from matrix-common (#11979)
* Require latest matrix-common
* Use the common function
2022-02-14 13:12:22 +00:00
Patrick Cloke 380c3d40f4
Return JSON errors for unknown resources under /matrix/client. (#11930)
Re-applies the changes from 3e0cfd447e (#11602),
reverting d93ec0a0ba (#11764) now that the conflict
with the webclient listener was fixed in 119edf51eb (#11895).
2022-02-08 07:06:25 -05:00
Patrick Cloke 119edf51eb
Remove support for the webclient listener. (#11895)
Also remove support for non-HTTP(S) web_client_location.
2022-02-03 18:36:49 +00:00
Shay b8bf600700
Check that `gc` method is available before using in `synapse/app/_base` (#11816)
* add check that gc.freeze is available before calling

* newsfragment

* lint

* Update comment

Co-authored-by: Dan Callahan <danc@element.io>

Co-authored-by: Dan Callahan <danc@element.io>
2022-01-25 10:35:18 -08:00
Brendan Abolivier 1d5f7b2cc6
Log modules at startup (#11813) 2022-01-25 15:35:35 +01:00
Shay 9006ee36d1
Drop support for and remove references to EOL Python 3.6 (#11683)
* remove reference in comments to python3.6

* upgrade tox python env in script

* bump python version in example for completeness

* upgrade python version requirement in setup doc

* upgrade necessary python version in __init__.py

* upgrade python version in setup.py

* newsfragment

* drops refs to bionic and replace with focal

* bump refs to postgres 9.6 to 10

* fix hanging ci

* try installing tzdata first

* revert change made in b979f336

* ignore new random mypy error while debugging other error

* fix lint error for temporary workaround

* revert change to install list

* try passing env var

* export debian frontend var?

* move line and add comment

* bump pillow dependency

* bump lxml depenency

* install libjpeg-dev for pillow

* bump automat version to one compatible with py3.8

* add libwebp for pillow

* bump twisted trunk python version

* change suffix of newsfragment

* remove redundant python 3.7 checks

* lint
2022-01-21 14:23:26 -08:00
Patrick Cloke d09099642e
Fix redirecting to the webclient for non-HTTP(S) web_client_location. (#11783)
To not change the behaviour during the deprecation period.

Follow-up to #11774.
2022-01-20 15:34:45 +00:00
Patrick Cloke 91221b6961
Add deprecation warnings for `webclient` listener and non-HTTP(S) `web_client_location`. (#11774)
This changes the behaviour of the root endpoint to redirect
directly to the configuration of `web_client_location` if it is
given an HTTP(S) URL.
2022-01-20 14:21:06 +00:00
Andrew Morgan 9eab71aa93 Merge branch 'master' into develop 2022-01-18 16:46:39 +00:00
Andrew Morgan d93ec0a0ba
Partially revert #11602 to prevent webclient overriding client resource (#11764) 2022-01-18 16:03:56 +00:00
Richard van der Hoff 20c6d85c6e
Simplify GC prometheus metrics (#11723)
Rather than hooking into the reactor loop, just add a timed task that runs every 100 ms to do the garbage collection.

Part 1 of a quest to simplify the reactor monkey-patching.
2022-01-13 14:35:52 +00:00
Patrick Cloke 3e0cfd447e
Return JSON errors for unknown resources under /matrix/client. (#11602)
Instead of returning 404 errors with HTML bodies when an unknown
prefix was requested (e.g. /matrix/client/v1 before Synapse v1.49.0).
2021-12-20 16:00:13 +00:00
Patrick Cloke f44d729d4c
Additional type hints for config module. (#11465)
This adds some misc. type hints to helper methods used
in the `synapse.config` module.
2021-12-01 07:28:23 -05:00
Shay 70cbb1a5e3
Don't start Synapse master process if `worker_app` is set (#11416)
* Add check to catch syanpse master process starting when workers are configured

* add test to verify that starting master process with worker config raises error

* newsfragment

* specify config.worker.worker_app in check

* update test

* report specific config option that triggered the error

Co-authored-by: reivilibre <oliverw@matrix.org>

* clarify error message

Co-authored-by: reivilibre <oliverw@matrix.org>

Co-authored-by: reivilibre <oliverw@matrix.org>
2021-11-30 10:12:18 -08:00
Maximilian Bosch 42bf020463
Expose worker & homeserver as entrypoints in `setup.py` (#11449)
Co-authored-by: reivilibre <oliverw@matrix.org>
2021-11-30 16:52:45 +00:00
Patrick Cloke a4521ce0a8
Support the stable /hierarchy endpoint from MSC2946 (#11329)
This also makes additional updates where the implementation
had drifted from the approved MSC.

Unstable endpoints will be removed at a later data.
2021-11-29 14:32:20 -05:00
Tulir Asokan 7b4e228e41
Fix using MSC2716 batch sending with event persistence workers (#11220)
Signed-off-by: Tulir Asokan <tulir@beeper.com>
2021-11-29 13:13:23 +00:00
Sean Quah 84fac0f814
Add type annotations to `synapse.metrics` (#10847) 2021-11-17 19:07:02 +00:00
Aaron R d993c3bb1e
Add support for `/_matrix/media/v3` APIs (#11371)
* Add support for `/_matrix/media/v3` APIs

Signed-off-by: Aaron Raimist <aaron@raim.ist>

* Update `workers.md` to use v3 client and media APIs

Signed-off-by: Aaron Raimist <aaron@raim.ist>

* Add changelog

Signed-off-by: Aaron Raimist <aaron@raim.ist>
2021-11-17 15:30:24 +00:00
Aaron R dfa536490e
Add support for `/_matrix/client/v3` APIs (#11318)
This is one of the changes required to support Matrix 1.1

Signed-off-by: Aaron Raimist <aaron@raim.ist>
2021-11-16 14:47:58 +01:00
Patrick Cloke 5cace20bf1
Add missing type hints to `synapse.app`. (#11287) 2021-11-10 15:06:54 -05:00
Richard van der Hoff 71f9966f27
Support for serving server well-known files (#11211)
Fixes https://github.com/matrix-org/synapse/issues/8308
2021-11-01 15:10:16 +00:00
Erik Johnston 82d2168a15
Add metrics to the threadpools (#11178) 2021-11-01 11:21:36 +00:00
Rafael Gonçalves 0e16b418f6
Add knock information in admin exported data (#11171)
Signed-off-by: Rafael Goncalves <rafaelgoncalves@riseup.net>
2021-10-28 18:54:38 +01:00
Sean Quah f3a4be8700
Shut down the DNS threadpool (#11190)
The DNS threadpool must be explicitly stopped, otherwise Synapse will
hang indefinitely when asked to shut down.
2021-10-27 13:04:56 +01:00
Erik Johnston 7004f43da1
Move DNS lookups into separate thread pool (#11177)
This is to stop large bursts of lookups starving out other users of the
thread pools.

Fixes #11049.
2021-10-26 13:45:38 +01:00
Sean Quah 2b82ec425f
Add type hints for most `HomeServer` parameters (#11095) 2021-10-22 18:15:41 +01:00
Hillery Shay 7d70582eb0
Fix broken export-data admin command and add a test for it to CI (#11078)
Fix broken export-data admin command and add a test for it to CI
2021-10-18 08:14:12 -07:00
Azrenbeth cdd308845b
Port the Password Auth Providers module interface to the new generic interface (#10548)
Co-authored-by: Azrenbeth <7782548+Azrenbeth@users.noreply.github.com>
Co-authored-by: Brendan Abolivier <babolivier@matrix.org>
2021-10-13 11:21:52 +00:00
Patrick Cloke f4b1a9a527
Require direct references to configuration variables. (#10985)
This removes the magic allowing accessing configurable
variables directly from the config object. It is now required
that a specific configuration class is used (e.g. `config.foo`
must be replaced with `config.server.foo`).
2021-10-06 10:47:41 -04:00
Patrick Cloke 94b620a5ed
Use direct references for configuration variables (part 6). (#10916) 2021-09-29 06:44:15 -04:00
Patrick Cloke bb7fdd821b
Use direct references for configuration variables (part 5). (#10897) 2021-09-24 07:25:21 -04:00
Patrick Cloke 47854c71e9
Use direct references for configuration variables (part 4). (#10893) 2021-09-23 12:03:01 -04:00
Patrick Cloke e584534403
Use direct references for some configuration variables (part 3) (#10885)
This avoids the overhead of searching through the various
configuration classes by directly referencing the class that
the attributes are in.

It also improves type hints since mypy can now resolve the
types of the configuration variables.
2021-09-23 07:13:34 -04:00
Patrick Cloke 01c88a09cd
Use direct references for some configuration variables (#10798)
Instead of proxying through the magic getter of the RootConfig
object. This should be more performant (and is more explicit).
2021-09-13 13:07:12 -04:00
Patrick Cloke 1fdf2cf8e8
Document that /spaces & /hierarchy can be routed to workers. (#10648)
Also refactors some of the registration of endpoints on workers.
2021-09-08 11:02:31 -04:00
Azrenbeth 6e895366ea
Add config option to use non-default manhole password and keys (#10643) 2021-09-06 16:08:03 +01:00
Sean f8bf83b811
Skip the final GC on shutdown to improve restart times (#10712)
Use `gc.freeze()` on exit to exclude all existing objects from the final GC.
In testing, this sped up shutdown by up to a few seconds.

`gc.freeze()` runs in constant time, so there is little chance of performance
regression.

Signed-off-by: Sean Quah <seanq@element.io>
2021-09-01 11:55:31 +01:00
Patrick Cloke d12ba52f17
Persist room hierarchy pagination sessions to the database. (#10613) 2021-08-24 08:14:03 -04:00
Callum Brown 947dbbdfd1
Implement MSC3231: Token authenticated registration (#10142)
Signed-off-by: Callum Brown <callum@calcuode.com>

This is part of my GSoC project implementing [MSC3231](https://github.com/matrix-org/matrix-doc/pull/3231).
2021-08-21 22:14:43 +01:00
Erik Johnston 78a70a2e0b Merge branch 'release-v1.41' into develop 2021-08-18 17:02:47 +01:00
Azrenbeth 1a9f531c79
Port the PresenceRouter module interface to the new generic interface (#10524)
Port the PresenceRouter module interface to the new generic interface introduced in v1.37.0
2021-08-17 13:22:45 +00:00
Andrew Morgan 84469bdac7
Remove the unused public_room_list_stream (#10565)
Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
2021-08-17 14:02:50 +01:00
reivilibre 642a42edde
Flatten the synapse.rest.client package (#10600) 2021-08-17 11:57:58 +00:00
V02460 b7f7ca24b1
Remove shebang line from module files (#10415)
Signed-off-by: Kai A. Hiller <V02460@gmail.com>
2021-07-29 21:34:14 +01:00
reivilibre 10dcfae46f
Fix typo that causes R30v2 to actually be old R30 (#10486)
Signed-off-by: Olivier Wilkinson (reivilibre) <olivier@librepush.net>
2021-07-27 15:25:39 +01:00
Brendan Abolivier a743bf4694
Port the ThirdPartyEventRules module interface to the new generic interface (#10386)
Port the third-party event rules interface to the generic module interface introduced in v1.37.0
2021-07-20 12:39:46 +02:00
reivilibre eebfd024e9
Factorise `get_datastore` calls in phone_stats_home. (#10427)
Follow-up to #10332.
2021-07-19 19:31:17 +01:00
reivilibre 4e340412c0
Add a new version of the R30 phone-home metric, which removes a false impression of retention given by the old R30 metric (#10332)
Signed-off-by: Olivier Wilkinson (reivilibre) <olivier@librepush.net>
2021-07-19 16:11:34 +01:00
Jonathan de Jong 95e47b2e78
[pyupgrade] `synapse/` (#10348)
This PR is tantamount to running 
```
pyupgrade --py36-plus --keep-percent-format `find synapse/ -type f -name "*.py"`
```

Part of #9744
2021-07-19 15:28:05 +01:00
Jonathan de Jong bf72d10dbf
Use inline type hints in various other places (in `synapse/`) (#10380) 2021-07-15 11:02:43 +01:00
Erik Johnston 7a5873277e
Add support for evicting cache entries based on last access time. (#10205) 2021-07-05 16:32:12 +01:00
Erik Johnston 85d237eba7
Add a distributed lock (#10269)
This adds a simple best effort locking mechanism that works cross workers.
2021-06-29 19:15:47 +01:00
Richard van der Hoff 107c06081f
Ensure that errors during startup are written to the logs and the console. (#10191)
* Defer stdio redirection until we are about to start the reactor

* Catch and handle exceptions during startup
2021-06-21 11:41:25 +01:00
Brendan Abolivier 1b3e398bea
Standardise the module interface (#10062)
This PR adds a common configuration section for all modules (see docs). These modules are then loaded at startup by the homeserver. Modules register their hooks and web resources using the new `register_[...]_callbacks` and `register_web_resource` methods of the module API.
2021-06-18 12:15:52 +01:00
Brendan Abolivier 08c8469322
Remove support for ACME v1 (#10194)
Fixes #9778

ACME v1 has been fully decommissioned for existing installs on June 1st 2021(see https://community.letsencrypt.org/t/end-of-life-plan-for-acmev1/88430/27), so we can now safely remove it from Synapse.
2021-06-17 18:56:48 +01:00
Richard van der Hoff 9cf6e0eae7
Rip out the DNS lookup limiter (#10190)
As I've written in various places in the past (#7113, #9865) I'm pretty sure this is doing nothing useful at all.
2021-06-17 16:22:41 +01:00
Andrew Morgan a15a046c93
Clean up a broken import in admin_cmd.py (#10154) 2021-06-11 11:34:40 +01:00
Erik Johnston 5eed6348ce
Move some more endpoints off master (#10084) 2021-05-27 22:45:43 +01:00
Richard van der Hoff fe5dad46b0
Remove redundant code to reload tls cert (#10054)
we don't need to reload the tls cert if we don't have any tls listeners.

Follow-up to #9280.
2021-05-27 10:34:24 +01:00
Erik Johnston 3e831f24ff
Don't hammer the database for destination retry timings every ~5mins (#10036) 2021-05-21 17:57:08 +01:00
Erik Johnston 8771b1337d
Export jemalloc stats to prometheus when used (#9882) 2021-05-06 15:54:07 +01:00
Erik Johnston ef889c98a6
Optionally track memory usage of each LruCache (#9881)
This will double count slightly in the presence of interned strings. It's off by default as it can consume a lot of resources.
2021-05-05 16:54:36 +01:00
Erik Johnston 1fb9a2d0bf
Limit how often GC happens by time. (#9902)
Synapse can be quite memory intensive, and unless care is taken to tune
the GC thresholds it can end up thrashing, causing noticable performance
problems for large servers. We fix this by limiting how often we GC a
given generation, regardless of current counts/thresholds.

This does not help with the reverse problem where the thresholds are set
too high, but that should only happen in situations where they've been
manually configured.

Adds a `gc_min_seconds_between` config option to override the defaults.

Fixes #9890.
2021-05-05 16:53:45 +01:00
Richard van der Hoff 3ff2251754
Improved validation for received requests (#9817)
* Simplify `start_listening` callpath

* Correctly check the size of uploaded files
2021-04-23 19:20:44 +01:00
Richard van der Hoff 59d24c5bef
pass a reactor into SynapseSite (#9874) 2021-04-23 17:06:47 +01:00
Erik Johnston 9d25a0ae65
Split presence out of master (#9820) 2021-04-23 12:21:55 +01:00
Richard van der Hoff 5a153772c1
remove `HomeServer.get_config` (#9815)
Every single time I want to access the config object, I have to remember
whether or not we use `get_config`. Let's just get rid of it.
2021-04-14 19:09:08 +01:00
Erik Johnston 00a6db9676
Move some replication processing out of generic_worker (#9796)
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
2021-04-14 17:06:06 +01:00
Jonathan de Jong 4b965c862d
Remove redundant "coding: utf-8" lines (#9786)
Part of #9744

Removes all redundant `# -*- coding: utf-8 -*-` lines from files, as python 3 automatically reads source code as utf-8 now.

`Signed-off-by: Jonathan de Jong <jonathan@automatia.nl>`
2021-04-14 15:34:27 +01:00
Andrew Morgan 04819239ba
Add a Synapse Module for configuring presence update routing (#9491)
At the moment, if you'd like to share presence between local or remote users, those users must be sharing a room together. This isn't always the most convenient or useful situation though.

This PR adds a module to Synapse that will allow deployments to set up extra logic on where presence updates should be routed. The module must implement two methods, `get_users_for_states` and `get_interested_users`. These methods are given presence updates or user IDs and must return information that Synapse will use to grant passing presence updates around.

A method is additionally added to `ModuleApi` which allows triggering a set of users to receive the current, online presence information for all users they are considered interested in. This is the equivalent of that user receiving presence information during an initial sync. 

The goal of this module is to be fairly generic and useful for a variety of applications, with hard requirements being:

* Sending state for a specific set or all known users to a defined set of local and remote users.
* The ability to trigger an initial sync for specific users, so they receive all current state.
2021-04-06 14:38:30 +01:00
Patrick Cloke da75d2ea1f
Add type hints for the federation sender. (#9681)
Includes an abstract base class which both the FederationSender
and the FederationRemoteSendQueue must implement.
2021-03-29 11:43:20 -04:00
Richard van der Hoff 7c8402ddb8
Suppress CryptographyDeprecationWarning (#9698)
This warning is somewhat confusing to users, so let's suppress it
2021-03-26 17:33:55 +00:00
Brendan Abolivier 0b56481caa
Fix lint 2021-03-19 16:11:08 +01:00
Brendan Abolivier 066c703729
Move support for MSC3026 behind an experimental flag 2021-03-18 18:37:19 +01:00
Brendan Abolivier 405aeb0b2c
Implement MSC3026: busy presence state 2021-03-18 16:34:47 +01:00
Jonathan de Jong 27d2820c33
Enable flake8-bugbear, but disable most checks. (#9499)
* Adds B00 to ignored checks.
* Fixes remaining issues.
2021-03-16 14:19:27 -04:00
Richard van der Hoff 4db07f9aef
Set X-Forwarded-Proto header when frontend-proxy proxies a request (#9539)
Should fix some remaining warnings
2021-03-03 18:49:08 +00:00
Jonathan de Jong e12077a78a
Allow bytecode again (#9502)
In #75, bytecode was disabled (from a bit of FUD back in `python<2.4` days, according to dev chat), I think it's safe enough to enable it again.

Added in `__pycache__/` and `.pyc`/`.pyd` to `.gitignore`, to extra-insure compiled files don't get committed.

`Signed-off-by: Jonathan de Jong <jonathan@automatia.nl>`
2021-02-26 18:30:54 +00:00
Erik Johnston 2927921942
Clean up `ShardedWorkerHandlingConfig` (#9466)
* Split ShardedWorkerHandlingConfig

This is so that we have a type level understanding of when it is safe to
call `get_instance(..)` (as opposed to `should_handle(..)`).

* Remove special cases in ShardedWorkerHandlingConfig.

`ShardedWorkerHandlingConfig` tried to handle the various different ways
it was possible to configure federation senders and pushers. This led to
special cases that weren't hit during testing.

To fix this the handling of the different cases is moved from there and
`generic_worker` into the worker config class. This allows us to have
the logic in one place and allows the rest of the code to ignore the
different cases.
2021-02-24 13:23:18 +00:00
Erik Johnston 66f4949e7f
Fix deleting pushers when using sharded pushers. (#9465) 2021-02-22 21:14:42 +00:00
Eric Eastwood 0a00b7ff14
Update black, and run auto formatting over the codebase (#9381)
- Update black version to the latest
 - Run black auto formatting over the codebase
    - Run autoformatting according to [`docs/code_style.md
`](80d6dc9783/docs/code_style.md)
 - Update `code_style.md` docs around installing black to use the correct version
2021-02-16 22:32:34 +00:00
Richard van der Hoff 18ab35284a Merge branch 'social_login' into develop 2021-02-01 17:28:37 +00:00
Jan Christian Grünhage 43dd93bb26
Add phone home stats for encrypted messages. (#9283)
Signed-off-by: Jan Christian Grünhage <jan.christian@gruenhage.xyz>
2021-02-01 17:06:22 +00:00
Richard van der Hoff 9c715a5f19
Fix SSO on workers (#9271)
Fixes #8966.

* Factor out build_synapse_client_resource_tree

Start a function which will mount resources common to all workers.

* Move sso init into build_synapse_client_resource_tree

... so that we don't have to do it for each worker

* Fix SSO-login-via-a-worker

Expose the SSO login endpoints on workers, like the documentation says.

* Update workers config for new endpoints

Add documentation for endpoints recently added (#8942, #9017, #9262)

* remove submit_token from workers endpoints list

this *doesn't* work on workers (yet).

* changelog

* Add a comment about the odd path for SAML2Resource
2021-02-01 15:47:59 +00:00
Richard van der Hoff f78d07bf00
Split out a separate endpoint to complete SSO registration (#9262)
There are going to be a couple of paths to get to the final step of SSO reg, and I want the URL in the browser to consistent. So, let's move the final step onto a separate path, which we redirect to.
2021-02-01 13:15:51 +00:00
Ivan Shapovalov 13c7ab8181
Fixes for PyPy compatibility (#9270)
* synapse.app.base: only call gc.freeze() on CPython

gc.freeze() is an implementation detail of CPython garbage collector,
and notably does not exist on PyPy.

Rather than playing whack-a-mole and skipping the call when under PyPy,
simply restrict it to CPython because the whole gc module is
implementation-defined.

Signed-off-by: Ivan Shapovalov <intelfx@intelfx.name>
2021-01-30 17:22:05 +00:00
Erik Johnston 6633a4015a
Allow moving account data and receipts streams off master (#9104) 2021-01-18 15:47:59 +00:00
Richard van der Hoff 21a296cd5a
Split OidcProvider out of OidcHandler (#9107)
The idea here is that we will have an instance of OidcProvider for each
configured IdP, with OidcHandler just doing the marshalling of them.

For now it's still hardcoded with a single provider.
2021-01-14 13:29:17 +00:00
Patrick Cloke d1eb1b96e8
Register the /devices endpoint on workers. (#9092) 2021-01-13 12:35:40 -05:00
Erik Johnston c9195744a4
Move more encryption endpoints off master (#9068) 2021-01-11 18:01:27 +00:00
Richard van der Hoff 671138f658
Clean up exception handling in the startup code (#9059)
Factor out the exception handling in the startup code to a utility function,
and fix the some logging and exit code stuff.
2021-01-11 15:55:05 +00:00
Richard van der Hoff 7db2622d30
Remove unused SynapseService (#9058) 2021-01-11 10:24:22 +00:00
Erik Johnston b530eaa262
Allow running sendToDevice on workers (#9044) 2021-01-07 20:19:26 +00:00
Richard van der Hoff 111b673fc1
Add initial support for a "pick your IdP" page (#9017)
During login, if there are multiple IdPs enabled, offer the user a choice of
IdPs.
2021-01-05 11:25:28 +00:00
Patrick Cloke 68bb26da69
Allow redacting events on workers (#8994)
Adds the redacts endpoint to workers that have the client listener.
2020-12-29 07:40:12 -05:00
Richard van der Hoff 28877fade9
Implement a username picker for synapse (#8942)
The final part (for now) of my work to implement a username picker in synapse itself. The idea is that we allow
`UsernameMappingProvider`s to return `localpart=None`, in which case, rather than redirecting the browser
back to the client, we redirect to a username-picker resource, which allows the user to enter a username.
We *then* complete the SSO flow (including doing the client permission checks).

The static resources for the username picker itself (in 
https://github.com/matrix-org/synapse/tree/rav/username_picker/synapse/res/username_picker)
are essentially lifted wholesale from
https://github.com/matrix-org/matrix-synapse-saml-mozilla/tree/master/matrix_synapse_saml_mozilla/res. 
As the comment says, we might want to think about making them customisable, but that can be a follow-up. 

Fixes #8876.
2020-12-18 14:19:46 +00:00