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75 lines
2.8 KiB
Markdown
75 lines
2.8 KiB
Markdown
Server Notices
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==============
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'Server Notices' are a new feature introduced in Synapse 0.30. They provide a
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channel whereby server administrators can send messages to users on the server.
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They are used as part of communication of the server polices(see
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[consent_tracking.md](consent_tracking.md)), however the intention is that
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they may also find a use for features such as "Message of the day".
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This is a feature specific to Synapse, but it uses standard Matrix
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communication mechanisms, so should work with any Matrix client.
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User experience
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---------------
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When the user is first sent a server notice, they will get an invitation to a
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room (typically called 'Server Notices', though this is configurable in
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`homeserver.yaml`). They will be **unable to reject** this invitation -
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attempts to do so will receive an error.
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Once they accept the invitation, they will see the notice message in the room
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history; it will appear to have come from the 'server notices user' (see
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below).
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The user is prevented from sending any messages in this room by the power
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levels.
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Having joined the room, the user can leave the room if they want. Subsequent
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server notices will then cause a new room to be created.
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Synapse configuration
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---------------------
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Server notices come from a specific user id on the server. Server
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administrators are free to choose the user id - something like `server` is
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suggested, meaning the notices will come from
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`@server:<your_server_name>`. Once the Server Notices user is configured, that
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user id becomes a special, privileged user, so administrators should ensure
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that **it is not already allocated**.
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In order to support server notices, it is necessary to add some configuration
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to the `homeserver.yaml` file. In particular, you should add a `server_notices`
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section, which should look like this:
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```yaml
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server_notices:
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system_mxid_localpart: server
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system_mxid_display_name: "Server Notices"
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system_mxid_avatar_url: "mxc://server.com/oumMVlgDnLYFaPVkExemNVVZ"
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room_name: "Server Notices"
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```
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The only compulsory setting is `system_mxid_localpart`, which defines the user
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id of the Server Notices user, as above. `room_name` defines the name of the
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room which will be created.
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`system_mxid_display_name` and `system_mxid_avatar_url` can be used to set the
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displayname and avatar of the Server Notices user.
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Sending notices
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---------------
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As of the current version of synapse, there is no convenient interface for
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sending notices (other than the automated ones sent as part of consent
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tracking).
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In the meantime, it is possible to test this feature using the manhole. Having
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gone into the manhole as described in [manhole.md](manhole.md), a notice can be
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sent with something like:
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```
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>>> hs.get_server_notices_manager().send_notice('@user:server.com', {'msgtype':'m.text', 'body':'foo'})
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```
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