synapse/docs/admin_api/media_admin_api.md

# List all media in a room

This API gets a list of known media in a room.
However, it only shows media from unencrypted events or rooms.

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](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
}
```

# Delete local media
This API deletes the *local* media from the disk of your own server.
This includes any local thumbnails and copies of media downloaded from
remote homeservers.
This API will not affect media that has been uploaded to external
media repositories (e.g https://github.com/turt2live/matrix-media-repo/).
See also [purge_remote_media.rst](purge_remote_media.rst).

## Delete a specific local media
Delete a specific `media_id`.

Request:

```
DELETE /_synapse/admin/v1/media/<server_name>/<media_id>

{}
```

URL Parameters

* `server_name`: string - The name of your local server (e.g `matrix.org`)
* `media_id`: string - The ID of the media (e.g `abcdefghijklmnopqrstuvwx`)

Response:

```json
    {
       "deleted_media": [
          "abcdefghijklmnopqrstuvwx"
       ],
       "total": 1
    }
```

The following fields are returned in the JSON response body:

* `deleted_media`: an array of strings - List of deleted `media_id`
* `total`: integer - Total number of deleted `media_id`

## Delete local media by date or size

Request:

```
POST /_synapse/admin/v1/media/<server_name>/delete?before_ts=<before_ts>

{}
```

URL Parameters

* `server_name`: string - The name of your local server (e.g `matrix.org`).
* `before_ts`: string representing a positive integer - Unix timestamp in ms.
Files that were last used before this timestamp will be deleted. It is the timestamp of
last access and not the timestamp creation. 
* `size_gt`: Optional - string representing a positive integer - Size of the media in bytes.
Files that are larger will be deleted. Defaults to `0`.
* `keep_profiles`: Optional - string representing a boolean - Switch to also delete files
that are still used in image data (e.g user profile, room avatar).
If `false` these files will be deleted. Defaults to `true`.

Response:

```json
    {
       "deleted_media": [
          "abcdefghijklmnopqrstuvwx",
          "abcdefghijklmnopqrstuvwz"
       ],
       "total": 2
    }
```

The following fields are returned in the JSON response body:

* `deleted_media`: an array of strings - List of deleted `media_id`
* `total`: integer - Total number of deleted `media_id`