The implementation is rubbish, as it doesn't avoid the exponential backoff
Remove default rate limit testing.
It doesn't work. No there really isn't more to say about it
you're welcome to dispute it if you're going to do the work investigating. I'm not.
We used to have a test here that tested whether Mjolnir was going to carry out a redact order the default limits in a reasonable time scale.
Now I think that's never going to happen without writing a new algorithm for respecting rate limiting.
Which is not something there is time for.
https://github.com/matrix-org/synapse/pull/13018
Synapse rate limits were broken and very permitting so that's why the current hack worked so well.
Now it is not broken, so our rate limit handling is.
b850e4554c
Honestly I don't think we can expect anyone to be able to use Mjolnir under default rate limits.
well, it's not quite simple as broken, but it is broken. With the default level in synapse (which is what matrix.org uses) it is struggling to redact 15 messages within 5 minutes. that means 5 messages over the burst count. This is ofc ontop mjolnir sending reactions / responding to replies (which isn't much but... enough to mess with the rate limiter since ofc, Synapse tells requests to wait x amount of time before trying again, but that doesn't help for concurrent requests since ofc there's only 1 slot available at that future time. This means Synapse just wacks everything with exponentially longer shit without many (or any?) events going through
it used to be fine
because rate limiting in synapse used to be a lot more liberal because it was "broken" or something, that's not me saying it's broken that's just what synapse devs say which is probably true.
if all requests went into a queue then yeah you could eliminate one problem
but that's a lot of work and i don't think we should be doing it
cos no one uses mjolnir like this anyways
* Stop the config being global (in almost all contexts).
* make sure unit test has a config
* Make failing word list more visible
* Only use Healthz from index.ts
Not really sure how useful it is anyways?
* banListTest would applyACL before rules appeared in `/state`.
Mjolnir will call applyServerAcls several times while a policy list is being updated, sometimes concurrently. This means a request to set a server ACL in a room which has old data can finish after a more recent recent request with the correct ACL. This means that the old ACL gets applied to the rooms (for a moment).
This is a follow up from 551065815e
* Only allow one invocation of applyServerAcls at a time as to not conflict with each other by using a promise chain.
We don't use the throttle queue because we don't want to be blocked by other background tasks.
We don't make another throttle queue because we don't want throttling and we don't want to delay the ACL application, which can happen even with throttle time of 0.
Towards opinions in PolicyLists.
This changeset is part of an ongoing effort to implement "opinions"
within policy lists, as per MSC3847.
For the time being:
- we rename BanList into PolicyList;
- we cleanup a little dead code;
- we replace a few `string`s with `enum`;
- `ListRule` becomes an abstract class with two concrete subclasses `ListRuleBan` and `ListRuleOpinion`.
* docs/moderators.md: add section on Trusted Reporters
* Update docs/moderators.md
Co-authored-by: Thibault Martin <thibaultamartin@users.noreply.github.com>
* clarify that alertThreshold is not the same as displayReports
Co-authored-by: Thibault Martin <thibaultamartin@users.noreply.github.com>
They have been in the spec for ~3 years now and most mjolnirs should be
able to handle them. Let's use the stable endpoint now, so that other
moderation tools don't need to implement the legacy identifier to handle
new bans at some point.
Signed-off-by: Nicolas Werner <nicolas.werner@hotmail.de>
* Remove debug leftovers from a test.
This is really terrible and has meant whenever anyone has run `yarn test:integration` they have only been running this test.
💀💀💀https://www.youtube.com/watch?v=jmX-tzSOFE0
* Set a default timeout for integration tests that is 5 minutes long.
Seriously, I don't think there is much to gain by making people guess
a reasnoble time for a test to complete in all the time, especially
with how much Synapse changes in response time and all of the machines
involved in running these tests.
* Warn when giving up on being throttled
* For some reason it takes longer for events to appear in /state
no i am not going to track down why yet.
* Rate limiting got a lot more aggresive.
https://github.com/matrix-org/synapse/pull/13018
Rate limiting in Synapse used to reset the burst count and remove
the backoff when you were spamming continuously, now it doesn't.
Ideally we'd rewrite the rate limiting logic to back off for longer
than suggested so we could get burst again, but for now
lets just unblock CI by reducing the number of events we send in these
tests.
So the test before sometimes sent the report *before*
the protection (that is used to check whether we have received
the report) was registered.
This of course meant that we didn't ever receive the report from
the perspectivee of the test.
This PR should now mean we always send the report after
registering the protection.
This pull requests adds for glob support in the `!mjolnir kick` command.
## Example
```
!mjolnir kick @*:domain.tld <reason> --force
```
This command will kick every user having a mxid matching `domain.tld`.
You can also still kick a particular user:
```
!mjolnir kick @user:domain.tld <reason>
```
## Tests:
Tested on the Furry Tech room (`vRGLvqJYlFvzpThbxI:matrix.org`) after a spam wave.
It kicked over 13k bots in a matter of hours without putting too much strain on the homeserver.
For instance, this command was matching `@spam*`:
Signed-off-by: Jae Lo Presti <me@jae.fi>
* Remove the need to call `/initialSync` in `getMessagesByUserIn`.
At the moment we call `/initialSync` to give a `from` token to `/messages`.
In this PR we instead do not provide a `from` token when calling `/messages`,
which has recently been permitted in the spec
Technically this is still unstable in the spec
https://spec.matrix.org/unstable/client-server-api/#get_matrixclientv3roomsroomidmessageshttps://github.com/matrix-org/matrix-spec/pull/1002
Synapse has supported this for over 2 years and Element web depends on it for threads.
https://github.com/matrix-org/matrix-js-sdk/pull/2065
Given that redactions are super heavy in Mjolnir already and have been reported
as barely functional on matrix.org I believe we should also adopt this approach as
if for some reason the spec did change before the next release (1.3) (extremely unlikely) we can revert this commit.
* Have the callback work on the packed event Obj.
And also explicitly pack the Mjolnir object inside the event.
* Add VS ignores.
* Commit suggested review changes.
- Add bind to callback
- Add type cast for event packed object
* Fix missing parenthesis.
* Don't pass Mjolnir obj to handleReport().
Co-authored-by: David Teller <davidt@element.io>
The reason we want this is so that people do not forget to change the version number in the synapse module.
The precedent is that the version number has been 0.1.0 since the begging until now.
While this solution does mean that there may be new version of the module where
nothing has actually changed, this is still better than not changing the version at all.
Another version scheme for the module would be inconsistent to
the git repository tags and that has the potential to cause much more confusion
than "blank" version bumps.
If this is a problem, then antispam must be extracted to another repository.
In order to test this, run `yarn version --patch` observe the changes with `git log` and `git diff HEAD~`,
then YOU MUST delete the tag with `git tag --delete vd.d.d` when you are finished.
* more robust
There is no reason to call process.exit() from `index.ts` or in `Mjolnir.start()` because
https://nodejs.org/api/process.html#warning-using-uncaughtexception-correctly
>The 'uncaughtException' event is emitted when an uncaught JavaScript exception bubbles all the way back to the event loop. By default, Node.js handles such exceptions by printing the stack trace to stderr and exiting with code 1, overriding any previously set process.exitCode. Adding a handler for the 'uncaughtException' event overrides this default behaviour.
* Move message_limit into antispam.
https://github.com/matrix-org/message_limit
Not ideal but we've had complaints about keeping them separate
and unfortunately the need for this module is not going to go away.
* standard protection consequences
* add integration test to make sure good users aren't banned
* the less far `event` propagates, the better
* better document consequence.ts
* improve innocent user integration test
* switch to room.event emit
