MatrixSynapse/docs/admin_api/media_admin_api.md

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List all media in a room

This API gets a list of known media in a room.

The API is:

GET /_synapse/admin/v1/room/<room_id>/media

To use it, you will need to authenticate by providing an access_token for a server admin: see README.rst.

The API returns a JSON body like the following:

{
    "local": [
        "mxc://localhost/xwvutsrqponmlkjihgfedcba",
        "mxc://localhost/abcdefghijklmnopqrstuvwx"
    ],
    "remote": [
        "mxc://matrix.org/xwvutsrqponmlkjihgfedcba",
        "mxc://matrix.org/abcdefghijklmnopqrstuvwx"
    ]
}

Quarantine media

Quarantining media means that it is marked as inaccessible by users. It applies to any local media, and any locally-cached copies of remote media.

The media file itself (and any thumbnails) is not deleted from the server.

Quarantining media by ID

This API quarantines a single piece of local or remote media.

Request:

POST /_synapse/admin/v1/media/quarantine/<server_name>/<media_id>

{}

Where server_name is in the form of example.org, and media_id is in the form of abcdefg12345....

Response:

{}

Quarantining media in a room

This API quarantines all local and remote media in a room.

Request:

POST /_synapse/admin/v1/room/<room_id>/media/quarantine

{}

Where room_id is in the form of !roomid12345:example.org.

Response:

{
  "num_quarantined": 10  # The number of media items successfully quarantined
}

Note that there is a legacy endpoint, POST /_synapse/admin/v1/quarantine_media/<room_id >, that operates the same. However, it is deprecated and may be removed in a future release.

Quarantining all media of a user

This API quarantines all local media that a local user has uploaded. That is to say, if you would like to quarantine media uploaded by a user on a remote homeserver, you should instead use one of the other APIs.

Request:

POST /_synapse/admin/v1/user/<user_id>/media/quarantine

{}

Where user_id is in the form of @bob:example.org.

Response:

{
  "num_quarantined": 10  # The number of media items successfully quarantined
}