Bridge sends invalid stickers

[Jonas Platte]

Apparently, this event (seemingly with event ID and possibly other things redacted) was sent by mautix-whatsapp:

{
  "room_id": "censor",
  "type": "m.sticker",
  "content": {
    "body": "image.webp",
    "file": {
      "hashes": {
        "sha256": "censor"
      },
      "iv": "censor",
      "key": {
        "alg": "A256CTR",
        "ext": true,
        "k": "censor",
        "key_ops": [
          "encrypt",
          "decrypt"
        ],
        "kty": "oct"
      },
      "url": "mxc://fuo.fi/censor",
      "v": "v2"
    },
    "info": {
      "h": 190,
      "mimetype": "image/webp",
      "size": 29502,
      "thumbnail_file": {
        "hashes": {
          "sha256": "censor"
        },
        "iv": "censor",
        "key": {
          "alg": "A256CTR",
          "ext": true,
          "k": "censor",
          "key_ops": [
            "encrypt",
            "decrypt"
          ],
          "kty": "oct"
        },
        "url": "mxc://fuo.fi/censor",
        "v": "v2"
      },
      "thumbnail_info": {
        "h": 190,
        "mimetype": "image/webp",
        "size": 29502,
        "w": 190
      },
      "w": 190
    }
  }
}

(reported here in the Element X iOS room)

It has a url field, but nested under content -> file while the spec says that m.sticker must have a url under content directly.

[Tulir Asokan]

That's encrypted, not invalid

[Jonas Platte]

Is there an MSC for that?

[Tulir Asokan]

More of a spec omission/mistake than a MSC. Stickers are just m.images with their own event type, so all the same fields apply and file was probably just missed while copying the schema. The info schema was not duplicated, so thumbnail_file is already there.

[Jonas Platte]

Okay, thanks for the quick replies.