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version numbers. (#13706)
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Parse the `m.relates_to` event content field (which describes relations)
in a single place, this is used during:
* Event persistence.
* Validation of the Client-Server API.
* Fetching bundled aggregations.
* Processing of push rules.
Each of these separately implement the logic and each made slightly
different assumptions about what was valid. Some had minor / potential
bugs.
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broken in 5938928 :-S
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As the comment says, there is no need to process such events, and indeed we
need to avoid doing so.
Fixes #12509.
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This is more efficient, since we only have to look up `state_key` in the event
dict once, rather than three (!) times.
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If we find ourselves dealing with rejected events, we proably want to know
about it. Let's include it in the stringification of the event so that it gets
logged.
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I meant to do this before, in #10591, but because I'm stupid I forgot to do it
for V2 and V3 events.
I've factored the common code out to `EventBase` to save us having two copies
of it.
This means that for `FrozenEvent` we replace `self.get("event_id", None)` with
`self.event_id`, which I think is safe. `get()` is an alias for
`self._dict.get()`, whereas `event_id()` is an `@property` method which looks
up `self._event_id`, which is populated during construction from the same
dict. We don't seem to rely on the fallback, because if the `event_id` key is
absent from the dict then construction of the `EventBase` object will
fail.
Long story short, the only way this could change behaviour is if
`event_dict["event_id"]` is changed *after* the `EventBase` object is
constructed without updating the `_event_id` field, or vice versa - either of
which would be very problematic anyway and the behavior of `str(event)` is the
least of our worries.
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* Include outlier status in `str(event)`
In places where we log event objects, knowing whether or not you're dealing
with an outlier is super useful.
* Remove duplicated logging in get_missing_events
When we process events received from get_missing_events, we log them twice
(once in `_get_missing_events_for_pdu`, and once in `on_receive_pdu`). Reduce
the duplication by removing the logging in `on_receive_pdu`, and ensuring the
call sites do sensible logging.
* log in `on_receive_pdu` when we already have the event
* Log which prev_events we are missing
* changelog
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These signatures would end up invalid since the joining/leaving/knocking
server would modify the response before calling send_{join,leave,knock}.
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Work on https://github.com/matrix-org/matrix-doc/pull/2716
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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>`
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Part of #9366
Adds in fixes for B006 and B008, both relating to mutable parameter lint errors.
Signed-off-by: Jonathan de Jong <jonathan@automatia.nl>
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* Populate `internal_metadata.outlier` based on `events` table
Rather than relying on `outlier` being in the `internal_metadata` column,
populate it based on the `events.outlier` column.
* Move `outlier` out of InternalMetadata._dict
Ultimately, this will allow us to stop writing it to the database. For now, we
have to grandfather it back in so as to maintain compatibility with older
versions of Synapse.
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`distutils` is pretty much deprecated these days, and replaced with
`setuptools`. It's also annoying because it's you can't `pip install` it, and
it's hard to figure out which debian package we should depend on to make sure
it's there.
Since we only use it for a tiny function anyway, let's just vendor said
function into our codebase.
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otherwise non-state events get written as `<FrozenEvent ... state_key='None'>`
which is indistinguishable from state events with the actual state_key `None`.
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There's no need for it to be in the dict as well as the events table. Instead,
we store it in a separate attribute in the EventInternalMetadata object, and
populate that on load.
This means that we can rely on it being correctly populated for any event which
has been persited to the database.
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It turns out that not all out-of-band membership events are labelled as such,
so we need to be more accepting here.
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This is a bit fiddly because it all has to be done on one fell swoop:
* Wherever we create a new event, pass in the room version (and check it matches the format version)
* When we prune an event, use the room version of the unpruned event to create the pruned version.
* When we pass an event over the replication protocol, pass the room version over alongside it, and use it when deserialising the event again.
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Mostly, this gives mypy an easier time.
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this amounts to the same thing, but replaces `_event_dict` with `_dict`, and
removes some of the function layers generated by `property`.
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... and use it in places where it's trivial to do so.
This will make it easier to pass room versions into the FrozenEvent
constructors.
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Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
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* Bump signedjson to 1.1
... so that we can use the type definitions
* Fix breakage caused by upgrade to signedjson 1.1
Thanks, @illicitonion...
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There are quite a few places that we assume that a redaction event has a
corresponding `redacts` key, which is not always the case. So lets
cheekily make it so that event.redacts just returns None instead.
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(#5629)
Fixes #5594
Forbid viewing relations on an event once it has been redacted.
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Adds new config option `cleanup_extremities_with_dummy_events` which
periodically sends dummy events to rooms with more than 10 extremities.
THIS IS REALLY EXPERIMENTAL.
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If we remove support for a particular room version, we should behave more
gracefully. This should make client requests fail with a 400 rather than a 500,
and will ignore individiual PDUs in a federation transaction, rather than the
whole transaction.
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Implements MSC1884
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Collect all the things that make room-versions different to one another into
one place, so that it's easier to define new room versions.
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The `prev_state` field on events is not specced and so synapse shouldn't
explode if an event is missing the field.
Fixes #4787
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erikj/redactions_eiah
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Store rejected remote invite events as outliers
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We also implement `make_membership_event` converting the returned
room version to an event format version.
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Currently we only have the one event format version defined, but this
adds the necessary infrastructure to persist and fetch the format
versions alongside the events.
We specify the format version rather than the room version as:
1. We don't necessarily know the room version, existing events may be
either v1 or v2.
2. We'd need to be careful to prevent/handle correctly if different
events in the same room reported to be of different versions, which
sounds annoying.
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* Add helpers for getting prev and auth events
This is in preparation for allowing the event format to change between
room versions.
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If we receive an event that doesn't pass their content hash check (e.g.
due to already being redacted) then we hit a bug which causes an
exception to be raised, which then promplty stops the event (and
request) from being processed.
This effects all sorts of federation APIs, including joining rooms with
a redacted state event.
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they're not meant to be lazy (#3307)
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They raised KeyError before. I'm changing this because the code uses
hasattr() to check for the presence of a key. This worked accidentally
before, because hasattr() silences all exceptions in python 2. However,
in python3, this isn't the case anymore.
I had a look around to see if anything depended on this raising a
KeyError and I couldn't find anything. Of course, I could have simply
missed it.
Signed-off-by: Adrian Tschira <nota@notafile.com>
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Or events that are sent via the federation "send_join" API.
This should match the behaviour from before v0.18.5 and #1635 landed.
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Move the checks for whether an event is new state inside persist
event itself.
This was harder than expected because there wasn't enough information
passed to persist event to correctly handle invites from remote servers
for new rooms.
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federation
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ujson.loads
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JSONEncoder that understands FrozenDict
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before returning early if we have already persisted that event.
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