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Handle string read receipt data (#10606)

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* Handle string read receipt data

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

* Test that we handle string read receipt data

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

* Add changelog for #10606

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

* Add docs

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

* Ignore malformed RRs

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

* Only surround hidden = ...

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

* Remove unnecessary argument

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

* Update changelog.d/10606.bugfix

Co-authored-by: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>
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Šimon Brandner 2021-08-16 13:22:38 +02:00 committed by GitHub
parent d1f43b731c
commit a3a7514570
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3 changed files with 32 additions and 1 deletions
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1
changelog.d/10606.bugfix Normal file
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@ -0,0 +1 @@
Fix errors on /sync when read receipt data is a string. Only affects homeservers with the experimental flag for [MSC2285](https://github.com/matrix-org/matrix-doc/pull/2285) enabled. Contributed by @SimonBrandner.

9
synapse/handlers/receipts.py
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@ -188,7 +188,14 @@ class ReceiptEventSource:
new_users = {}
for rr_user_id, user_rr in m_read.items():
hidden = user_rr.get("hidden", None)
try:
hidden = user_rr.get("hidden")
except AttributeError:
# Due to https://github.com/matrix-org/synapse/issues/10376
# there are cases where user_rr is a string, in those cases
# we just ignore the read receipt
continue
if hidden is not True or rr_user_id == user_id:
new_users[rr_user_id] = user_rr.copy()
# If hidden has a value replace hidden with the correct prefixed key

23
tests/handlers/test_receipts.py
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@ -286,6 +286,29 @@ class ReceiptsTestCase(unittest.HomeserverTestCase):
],
)
def test_handles_string_data(self):
"""
Tests that an invalid shape for read-receipts is handled.
Context: https://github.com/matrix-org/synapse/issues/10603
"""
self._test_filters_hidden(
[
{
"content": {
"$14356419edgd14394fHBLK:matrix.org": {
"m.read": {
"@rikj:jki.re": "string",
}
},
},
"room_id": "!jEsUZKDJdhlrceRyVU:example.org",
"type": "m.receipt",
},
],
[],
)
def _test_filters_hidden(
self, events: List[JsonDict], expected_output: List[JsonDict]
):