Commit Graph

4261 Commits

Author SHA1 Message Date
Sean Quah
68db233f0c
Handle race between persisting an event and un-partial stating a room ()
Whenever we want to persist an event, we first compute an event context,
which includes the state at the event and a flag indicating whether the
state is partial. After a lot of processing, we finally try to store the
event in the database, which can fail for partial state events when the
containing room has been un-partial stated in the meantime.

We detect the race as a foreign key constraint failure in the data store
layer and turn it into a special `PartialStateConflictError` exception,
which makes its way up to the method in which we computed the event
context.

To make things difficult, the exception needs to cross a replication
request: `/fed_send_events` for events coming over federation and
`/send_event` for events from clients. We transport the
`PartialStateConflictError` as a `409 Conflict` over replication and
turn `409`s back into `PartialStateConflictError`s on the worker making
the request.

All client events go through
`EventCreationHandler.handle_new_client_event`, which is called in
*a lot* of places. Instead of trying to update all the code which
creates client events, we turn the `PartialStateConflictError` into a
`429 Too Many Requests` in
`EventCreationHandler.handle_new_client_event` and hope that clients
take it as a hint to retry their request.

On the federation event side, there are 7 places which compute event
contexts. 4 of them use outlier event contexts:
`FederationEventHandler._auth_and_persist_outliers_inner`,
`FederationHandler.do_knock`, `FederationHandler.on_invite_request` and
`FederationHandler.do_remotely_reject_invite`. These events won't have
the partial state flag, so we do not need to do anything for then.

The remaining 3 paths which create events are
`FederationEventHandler.process_remote_join`,
`FederationEventHandler.on_send_membership_event` and
`FederationEventHandler._process_received_pdu`.

We can't experience the race in `process_remote_join`, unless we're
handling an additional join into a partial state room, which currently
blocks, so we make no attempt to handle it correctly.

`on_send_membership_event` is only called by
`FederationServer._on_send_membership_event`, so we catch the
`PartialStateConflictError` there and retry just once.

`_process_received_pdu` is called by `on_receive_pdu` for incoming
events and `_process_pulled_event` for backfill. The latter should never
try to persist partial state events, so we ignore it. We catch the
`PartialStateConflictError` in `on_receive_pdu` and retry just once.

Refering to the graph of code paths in
https://github.com/matrix-org/synapse/issues/12988#issuecomment-1156857648
may make the above make more sense.

Signed-off-by: Sean Quah <seanq@matrix.org>
2022-07-05 16:12:52 +01:00
Eric Eastwood
2c2a42cc10
Fix application service not being able to join remote federated room without a profile set ()
Fix https://github.com/matrix-org/synapse/issues/4778

Complement tests: https://github.com/matrix-org/complement/pull/399
2022-07-05 05:56:06 -05:00
Richard van der Hoff
6da861ae69
_process_received_pdu: Improve exception handling ()
`_check_event_auth` is expected to raise `AuthError`s, so no need to log it
again.
2022-07-01 10:52:10 +01:00
Shay
046a6513bc
Don't process /send requests for users who have hit their ratelimit () 2022-06-30 09:22:40 -07:00
David Teller
80c7a06777
Rate limiting invites per issuer ()
Co-authored-by: reivilibre <oliverw@matrix.org>
2022-06-30 09:44:47 +00:00
Šimon Brandner
13e359aec8
Implement MSC3827: Filtering of /publicRooms by room type ()
Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>
2022-06-29 17:12:45 +00:00
Erik Johnston
5099b5ecc7
Use new device_list_changes_in_room table when getting device list changes () 2022-06-17 11:42:03 +01:00
Sean Quah
9372f6f842
Fix logging context misuse when we fail to persist a federation event ()
When we fail to persist a federation event, we kick off a task to remove
its push actions in the background, using the current logging context.
Since we don't `await` that task, we may finish our logging context
before the task finishes. There's no reason to not `await` the task, so
let's do that.

Signed-off-by: Sean Quah <seanq@matrix.org>
2022-06-17 10:22:50 +01:00
reivilibre
7552615247
Reduce the duplication of code that invokes the rate limiter. () 2022-06-16 12:40:29 +01:00
Richard van der Hoff
8ecf6be1e1
Move some event auth checks out to a different method ()
* Add auth events to events used in tests

* Move some event auth checks out to a different method

Some of the event auth checks apply to an event's auth_events, rather than the
state at the event - which means they can play no part in state
resolution. Move them out to a separate method.

* Rename check_auth_rules_for_event

Now it only checks the state-dependent auth rules, it needs a better name.
2022-06-15 19:48:22 +01:00
Erik Johnston
0d1d3e0708
Speed up get_unread_event_push_actions_by_room ()
Fixes  hopefully.

The core change here is that `event_push_summary` now holds a summary of counts up until a much more recent point, meaning that the range of rows we need to count in `event_push_actions` is much smaller.

This needs two major changes:
1. When we get a receipt we need to recalculate `event_push_summary` rather than just delete it
2. The logic for deleting `event_push_actions` is now divorced from calculating `event_push_summary`.

In future it would be good to calculate `event_push_summary` while we persist a new event (it should just be a case of adding one to the relevant rows in `event_push_summary`), as that will further simplify the get counts logic and remove the need for us to periodically update `event_push_summary` in a background job.
2022-06-15 15:17:14 +00:00
Quentin Gliech
fe1daad672
Move the "email unsubscribe" resource, refactor the macaroon generator & simplify the access token verification logic. ()
This simplifies the access token verification logic by removing the `rights`
parameter which was only ever used for the unsubscribe link in email
notifications. The latter has been moved under the `/_synapse` namespace,
since it is not a standard API.

This also makes the email verification link more secure, by embedding the
app_id and pushkey in the macaroon and verifying it. This prevents the user
from tampering the query parameters of that unsubscribe link.

Macaroon generation is refactored:

- Centralised all macaroon generation and verification logic to the
  `MacaroonGenerator`
- Moved to `synapse.utils`
- Changed the constructor to require only a `Clock`, hostname, and a secret key
  (instead of a full `Homeserver`).
- Added tests for all methods.
2022-06-14 09:12:08 -04:00
Quentin Gliech
92103cb2c8
Decouple synapse.api.auth_blocking.AuthBlocking from synapse.api.auth.Auth. () 2022-06-14 09:51:15 +01:00
David Teller
a164a46038
Uniformize spam-checker API, part 4: port other spam-checker callbacks to return Union[Allow, Codes]. ()
Co-authored-by: Brendan Abolivier <babolivier@matrix.org>
2022-06-13 18:16:16 +00:00
Richard van der Hoff
f68b5e5773 Merge branch 'rav/simplify_event_auth_interface' into develop 2022-06-13 11:34:59 +01:00
Richard van der Hoff
c1b28b8842 Remove redundant room_version param from check_auth_rules_from_context
It's now implied by the room_version property on the event.
2022-06-12 23:13:10 +01:00
Richard van der Hoff
0d9d36b15c Remove room_version param from check_auth_rules_for_event
Instead, use the `room_version` property of the event we're checking.

The `room_version` was originally added as a parameter somewhere around ,
but really it's been redundant since  added a `room_version` field to `EventBase`.
2022-06-12 23:13:10 +01:00
Richard van der Hoff
68be42f6b6 Remove room_version param from validate_event_for_room_version
Instead, use the `room_version` property of the event we're validating.

The `room_version` was originally added as a parameter somewhere around ,
but really it's been redundant since  added a `room_version` field to `EventBase`.
2022-06-12 23:13:09 +01:00
Richard van der Hoff
7c6b2204d1
Faster joins: add issue links to the TODOs ()
... to help us keep track of these things
2022-06-09 10:13:03 +00:00
Daniel Aloni
b5a3aecf18
Return the same error message from /login when password is incorrect and when account doesn't exist. () 2022-06-07 14:58:48 +00:00
Patrick Cloke
9dc3293e0b
Consolidate the logic of delete_device/delete_devices. ()
By always using delete_devices and sometimes passing a list
with a single device ID.

Previously these methods had gotten out of sync with each
other and it seems there's little benefit to the single-device
variant.
2022-06-07 07:43:35 -04:00
Patrick Cloke
f7baffd8ec
Remove remaining pieces of groups code. ()
* Remove an unused stream ID generator.
* Remove the now unused remote profile cache.
2022-06-06 13:20:05 -04:00
Erik Johnston
44de53bb79
Reduce state pulled from DB due to sending typing and receipts over federation ()
Reducing the amount of state we pull from the DB is useful as fetching state is expensive in terms of DB, CPU and memory.
2022-06-06 16:46:11 +01:00
Patrick Cloke
1acc897c31
Implement MSC3816, consider the root event for thread participation. ()
As opposed to only considering a user to have "participated" if they
replied to the thread.
2022-06-06 07:18:04 -04:00
Erik Johnston
e3163e2e11
Reduce the amount of state we pull from the DB () 2022-06-06 09:24:12 +01:00
Erik Johnston
888a29f412
Wait for lazy join to complete when getting current state () 2022-06-01 16:02:53 +01:00
Patrick Cloke
7bc08f3201
Remove remaining bits of groups code. ()
* Update worker docs to remove group endpoints.
* Removes an unused parameter to `ApplicationService`.
* Break dependency between media repo and groups.
* Avoid copying `m.room.related_groups` state events during room upgrades.
2022-06-01 09:41:25 -04:00
Richard van der Hoff
79dadf7216
Fix 404 on /sync when the last event is a redaction of an unknown/purged event ()
Currently, we try to pull the event corresponding to a sync token from the database. However, when
we fetch redaction events, we check the target of that redaction (because we aren't allowed to send
redactions to clients without validating them). So, if the sync token points to a redaction of an event
that we don't have, we have a problem.

It turns out we don't really need that event, and can just work with its ID and metadata, which
sidesteps the whole problem.
2022-06-01 11:29:51 +00:00
Sean Quah
641908f72f
Faster room joins: Resume state re-syncing after a Synapse restart ()
Signed-off-by: Sean Quah <seanq@matrix.org>
2022-05-31 15:15:08 +00:00
Sean Quah
2fba1076c5
Faster room joins: Try other destinations when resyncing the state of a partial-state room ()
Signed-off-by: Sean Quah <seanq@matrix.org>
2022-05-31 15:50:29 +01:00
Erik Johnston
3594f6c1f3 Merge branch 'master' into develop 2022-05-31 14:48:22 +01:00
Erik Johnston
1e453053cb
Rename storage classes () 2022-05-31 12:17:50 +00:00
Brendan Abolivier
8fd87739bf
Fix import in module_api module and docs on the new check_event_for_spam signature ()
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
2022-05-31 12:04:53 +02:00
Jacek Kuśnierz
c4f548e05d
Don't return end from /messages if there are no more events ()
Signed-off-by: Jacek Kusnierz <jacek.kusnierz@tum.de>
2022-05-30 21:03:52 +01:00
David Teller
af7db19e1e
Uniformize spam-checker API, part 3: Expand check_event_for_spam with the ability to return additional fields ()
Signed-off-by: David Teller <davidt@element.io>
2022-05-30 18:24:56 +02:00
Brendan Abolivier
28989cb301
Add a background job to automatically delete stale devices ()
Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
2022-05-27 17:47:32 +02:00
Patrick Cloke
c52abc1cfd
Additional constants for EDU types. ()
Instead of hard-coding strings in many places.
2022-05-27 07:14:36 -04:00
Sean Quah
053ca5f3ca Synapse 1.60.0rc2 (2022-05-27)
==============================
 
 This release of Synapse adds a unique index to the `state_group_edges` table, in
 order to prevent accidentally introducing duplicate information (for example,
 because a database backup was restored multiple times). If your Synapse database
 already has duplicate rows in this table, this could fail with an error and
 require manual remediation.
 
 Additionally, the signature of the `check_event_for_spam` module callback has changed.
 The previous signature has been deprecated and remains working for now. Module authors
 should update their modules to use the new signature where possible.
 
 See [the upgrade notes](https://github.com/matrix-org/synapse/blob/develop/docs/upgrade.md#upgrading-to-v1600)
 for more details.
 
 Features
 --------
 
 - Add an option allowing users to use their password to reauthenticate for privileged actions even though password login is disabled. ([\#12883](https://github.com/matrix-org/synapse/issues/12883))
 
 Bugfixes
 --------
 
 - Explicitly close `ijson` coroutines once we are done with them, instead of leaving the garbage collector to close them. ([\#12875](https://github.com/matrix-org/synapse/issues/12875))
 
 Internal Changes
 ----------------
 
 - Improve URL previews by not including the content of media tags in the generated description. ([\#12887](https://github.com/matrix-org/synapse/issues/12887))
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Merge tag 'v1.60.0rc2' into develop

Synapse 1.60.0rc2 (2022-05-27)
==============================

This release of Synapse adds a unique index to the `state_group_edges` table, in
order to prevent accidentally introducing duplicate information (for example,
because a database backup was restored multiple times). If your Synapse database
already has duplicate rows in this table, this could fail with an error and
require manual remediation.

Additionally, the signature of the `check_event_for_spam` module callback has changed.
The previous signature has been deprecated and remains working for now. Module authors
should update their modules to use the new signature where possible.

See [the upgrade notes](https://github.com/matrix-org/synapse/blob/develop/docs/upgrade.md#upgrading-to-v1600)
for more details.

Features
--------

- Add an option allowing users to use their password to reauthenticate for privileged actions even though password login is disabled. ([\#12883](https://github.com/matrix-org/synapse/issues/12883))

Bugfixes
--------

- Explicitly close `ijson` coroutines once we are done with them, instead of leaving the garbage collector to close them. ([\#12875](https://github.com/matrix-org/synapse/issues/12875))

Internal Changes
----------------

- Improve URL previews by not including the content of media tags in the generated description. ([\#12887](https://github.com/matrix-org/synapse/issues/12887))
2022-05-27 12:07:18 +01:00
reivilibre
7b88f5a107
Add an option allowing users to use their password to reauthenticate even though password authentication is disabled. () 2022-05-27 09:44:51 +00:00
Patrick Cloke
49f06866e4
Remove backing code for groups/communities ()
Including handlers, configuration code, appservice support, and
the GroupID construct.
2022-05-26 09:04:34 -04:00
Patrick Cloke
1885ee0113
Remove unstable APIs for /hierarchy. ()
Removes the unstable endpoint as well as a duplicated field
which was modified during stabilization.
2022-05-26 07:10:28 -04:00
Erik Johnston
b83bc5fab5
Pull out less state when handling gaps mk2 () 2022-05-26 09:48:12 +00:00
Erik Johnston
4660d9fdcf
Fix up state_store naming () 2022-05-25 12:59:04 +01:00
Patrick Cloke
a8db8c6eba
Remove user-visible groups/communities code ()
Makes it so that groups/communities no longer exist from a user-POV. E.g. we remove:

* All API endpoints (including Client-Server, Server-Server, and admin).
* Documented configuration options (and the experimental flag, which is now unused).
* Special handling during room upgrades.
* The `groups` section of the `/sync` response.
2022-05-25 07:53:40 -04:00
Carl Bordum Hansen
774ac4930d
Make sure prev_ids defaults to empty list ()
Signed-off-by: Carl Bordum Hansen <carl@bordum.dk>
2022-05-25 09:14:45 +00:00
David Robertson
81d9f2a8e9
Fixes to MSC3787 implementation () 2022-05-24 16:50:50 +00:00
Eric Eastwood
7c2a78bb3b
Marker events as state - MSC2716 ()
Sending marker events as state now so they are always able to be seen by homeservers (not lost in some timeline gap).

Part of [MSC2716](https://github.com/matrix-org/matrix-spec-proposals/pull/2716)

Complement tests: https://github.com/matrix-org/complement/pull/371

As initially discussed at https://github.com/matrix-org/matrix-spec-proposals/pull/2716#discussion_r782629097 and https://github.com/matrix-org/matrix-spec-proposals/pull/2716#discussion_r876684431

When someone joins a room, process all of the marker events we see in the current state. Marker events should be sent with a unique `state_key` so that they can all resolve in the current state to easily be discovered. Marker events as state

 - If we re-use the same `state_key` (like `""`), then we would have to fetch previous snapshots of state up through time to find all of the marker events. This way we can avoid all of that. This PR was originally doing this but then thought of the smarter way to tackle in an [out of band discussion with @erikjohnston](https://docs.google.com/document/d/1JJDuPfcPNX75fprdTWlxlaKjWOdbdJylbpZ03hzo638/edit#bookmark=id.sm92fqyq7vpp).
 - Also avoids state resolution conflicts where only one of the marker events win

As a homeserver, when we see new marker state, we know there is new history imported somewhere back in time and should process it to fetch the insertion event where the historical messages are and set it as an insertion extremity. This way we know where to backfill more messages when someone asks for scrollback.
2022-05-23 20:43:37 -05:00
David Teller
28199e9357
Uniformize spam-checker API, part 2: check_event_for_spam ()
Signed-off-by: David Teller <davidt@element.io>
2022-05-23 17:27:39 +00:00
Brendan Abolivier
4cc4229cd7
Prevent expired events from being filtered out when retention is disabled ()
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
2022-05-23 17:18:23 +00:00
Shay
71e8afe34d
Update EventContext get_current_event_ids and get_prev_event_ids to accept state filters and update calls where possible () 2022-05-20 09:54:12 +01:00