655 lines
20 KiB
JavaScript
655 lines
20 KiB
JavaScript
/*
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Copyright 2016 OpenMarket Ltd
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Copyright 2017 Vector Creations Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/*
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Listens for incoming postMessage requests from the integrations UI URL. The following API is exposed:
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{
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action: "invite" | "membership_state" | "bot_options" | "set_bot_options" | etc... ,
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room_id: $ROOM_ID,
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user_id: $USER_ID
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// additional request fields
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}
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The complete request object is returned to the caller with an additional "response" key like so:
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{
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action: "invite" | "membership_state" | "bot_options" | "set_bot_options",
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room_id: $ROOM_ID,
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user_id: $USER_ID,
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// additional request fields
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response: { ... }
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}
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The "action" determines the format of the request and response. All actions can return an error response.
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An error response is a "response" object which consists of a sole "error" key to indicate an error.
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They look like:
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{
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error: {
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message: "Unable to invite user into room.",
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_error: <Original Error Object>
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}
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}
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The "message" key should be a human-friendly string.
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ACTIONS
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=======
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All actions can return an error response instead of the response outlined below.
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invite
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------
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Invites a user into a room.
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Request:
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- room_id is the room to invite the user into.
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- user_id is the user ID to invite.
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- No additional fields.
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Response:
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{
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success: true
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}
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Example:
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{
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action: "invite",
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room_id: "!foo:bar",
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user_id: "@invitee:bar",
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response: {
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success: true
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}
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}
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set_bot_options
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---------------
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Set the m.room.bot.options state event for a bot user.
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Request:
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- room_id is the room to send the state event into.
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- user_id is the user ID of the bot who you're setting options for.
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- "content" is an object consisting of the content you wish to set.
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Response:
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{
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success: true
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}
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Example:
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{
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action: "set_bot_options",
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room_id: "!foo:bar",
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user_id: "@bot:bar",
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content: {
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default_option: "alpha"
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},
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response: {
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success: true
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}
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}
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get_membership_count
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--------------------
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Get the number of joined users in the room.
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Request:
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- room_id is the room to get the count in.
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Response:
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78
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Example:
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{
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action: "get_membership_count",
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room_id: "!foo:bar",
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response: 78
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}
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can_send_event
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--------------
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Check if the client can send the given event into the given room. If the client
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is unable to do this, an error response is returned instead of 'response: false'.
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Request:
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- room_id is the room to do the check in.
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- event_type is the event type which will be sent.
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- is_state is true if the event to be sent is a state event.
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Response:
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true
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Example:
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{
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action: "can_send_event",
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is_state: false,
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event_type: "m.room.message",
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room_id: "!foo:bar",
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response: true
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}
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set_widget
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----------
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Set a new widget in the room. Clobbers based on the ID.
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Request:
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- `room_id` (String) is the room to set the widget in.
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- `widget_id` (String) is the ID of the widget to add (or replace if it already exists).
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It can be an arbitrary UTF8 string and is purely for distinguishing between widgets.
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- `url` (String) is the URL that clients should load in an iframe to run the widget.
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All widgets must have a valid URL. If the URL is `null` (not `undefined`), the
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widget will be removed from the room.
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- `type` (String) is the type of widget, which is provided as a hint for matrix clients so they
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can configure/lay out the widget in different ways. All widgets must have a type.
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- `name` (String) is an optional human-readable string about the widget.
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- `data` (Object) is some optional data about the widget, and can contain arbitrary key/value pairs.
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Response:
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{
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success: true
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}
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Example:
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{
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action: "set_widget",
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room_id: "!foo:bar",
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widget_id: "abc123",
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url: "http://widget.url",
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type: "example",
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response: {
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success: true
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}
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}
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get_widgets
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-----------
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Get a list of all widgets in the room. The response is an array
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of state events.
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Request:
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- `room_id` (String) is the room to get the widgets in.
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Response:
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[
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{
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type: "im.vector.modular.widgets",
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state_key: "wid1",
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content: {
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type: "grafana",
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url: "https://grafanaurl",
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name: "dashboard",
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data: {key: "val"}
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}
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room_id: “!foo:bar”,
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sender: "@alice:localhost"
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}
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]
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Example:
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{
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action: "get_widgets",
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room_id: "!foo:bar",
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response: [
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{
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type: "im.vector.modular.widgets",
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state_key: "wid1",
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content: {
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type: "grafana",
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url: "https://grafanaurl",
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name: "dashboard",
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data: {key: "val"}
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}
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room_id: “!foo:bar”,
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sender: "@alice:localhost"
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}
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]
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}
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membership_state AND bot_options
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--------------------------------
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Get the content of the "m.room.member" or "m.room.bot.options" state event respectively.
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NB: Whilst this API is basically equivalent to getStateEvent, we specifically do not
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want external entities to be able to query any state event for any room, hence the
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restrictive API outlined here.
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Request:
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- room_id is the room which has the state event.
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- user_id is the state_key parameter which in both cases is a user ID (the member or the bot).
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- No additional fields.
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Response:
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- The event content. If there is no state event, the "response" key should be null.
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Example:
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{
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action: "membership_state",
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room_id: "!foo:bar",
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user_id: "@somemember:bar",
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response: {
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membership: "join",
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displayname: "Bob",
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avatar_url: null
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}
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}
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*/
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const SdkConfig = require('./SdkConfig');
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const MatrixClientPeg = require("./MatrixClientPeg");
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const MatrixEvent = require("matrix-js-sdk").MatrixEvent;
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const dis = require("./dispatcher");
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import { _t } from './languageHandler';
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function sendResponse(event, res) {
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const data = JSON.parse(JSON.stringify(event.data));
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data.response = res;
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event.source.postMessage(data, event.origin);
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}
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function sendError(event, msg, nestedError) {
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console.error("Action:" + event.data.action + " failed with message: " + msg);
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const data = JSON.parse(JSON.stringify(event.data));
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data.response = {
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error: {
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message: msg,
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},
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};
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if (nestedError) {
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data.response.error._error = nestedError;
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}
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event.source.postMessage(data, event.origin);
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}
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function inviteUser(event, roomId, userId) {
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console.log(`Received request to invite ${userId} into room ${roomId}`);
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const client = MatrixClientPeg.get();
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if (!client) {
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sendError(event, _t('You need to be logged in.'));
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return;
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}
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const room = client.getRoom(roomId);
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if (room) {
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// if they are already invited we can resolve immediately.
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const member = room.getMember(userId);
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if (member && member.membership === "invite") {
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sendResponse(event, {
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success: true,
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});
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return;
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}
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}
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client.invite(roomId, userId).done(function() {
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sendResponse(event, {
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success: true,
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});
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}, function(err) {
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sendError(event, _t('You need to be able to invite users to do that.'), err);
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});
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}
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function setWidget(event, roomId) {
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const widgetId = event.data.widget_id;
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const widgetType = event.data.type;
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const widgetUrl = event.data.url;
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const widgetName = event.data.name; // optional
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const widgetData = event.data.data; // optional
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const client = MatrixClientPeg.get();
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if (!client) {
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sendError(event, _t('You need to be logged in.'));
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return;
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}
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// both adding/removing widgets need these checks
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if (!widgetId || widgetUrl === undefined) {
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sendError(event, _t("Unable to create widget."), new Error("Missing required widget fields."));
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return;
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}
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if (widgetUrl !== null) { // if url is null it is being deleted, don't need to check name/type/etc
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// check types of fields
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if (widgetName !== undefined && typeof widgetName !== 'string') {
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sendError(event, _t("Unable to create widget."), new Error("Optional field 'name' must be a string."));
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return;
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}
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if (widgetData !== undefined && !(widgetData instanceof Object)) {
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sendError(event, _t("Unable to create widget."), new Error("Optional field 'data' must be an Object."));
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return;
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}
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if (typeof widgetType !== 'string') {
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sendError(event, _t("Unable to create widget."), new Error("Field 'type' must be a string."));
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return;
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}
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if (typeof widgetUrl !== 'string') {
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sendError(event, _t("Unable to create widget."), new Error("Field 'url' must be a string or null."));
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return;
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}
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}
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let content = {
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type: widgetType,
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url: widgetUrl,
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name: widgetName,
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data: widgetData,
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};
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if (widgetUrl === null) { // widget is being deleted
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content = {};
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}
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client.sendStateEvent(roomId, "im.vector.modular.widgets", content, widgetId).done(() => {
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sendResponse(event, {
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success: true,
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});
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}, (err) => {
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sendError(event, _t('Failed to send request.'), err);
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});
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}
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function getWidgets(event, roomId) {
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const client = MatrixClientPeg.get();
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if (!client) {
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sendError(event, _t('You need to be logged in.'));
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return;
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}
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const room = client.getRoom(roomId);
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if (!room) {
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sendError(event, _t('This room is not recognised.'));
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return;
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}
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const stateEvents = room.currentState.getStateEvents("im.vector.modular.widgets");
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// Only return widgets which have required fields
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let widgetStateEvents = [];
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stateEvents.forEach((ev) => {
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if (ev.getContent().type && ev.getContent().url) {
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widgetStateEvents.push(ev.event); // return the raw event
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}
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})
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sendResponse(event, widgetStateEvents);
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}
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function setPlumbingState(event, roomId, status) {
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if (typeof status !== 'string') {
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throw new Error('Plumbing state status should be a string');
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}
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console.log(`Received request to set plumbing state to status "${status}" in room ${roomId}`);
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const client = MatrixClientPeg.get();
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if (!client) {
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sendError(event, _t('You need to be logged in.'));
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return;
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}
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client.sendStateEvent(roomId, "m.room.plumbing", { status : status }).done(() => {
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sendResponse(event, {
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success: true,
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});
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}, (err) => {
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sendError(event, err.message ? err.message : _t('Failed to send request.'), err);
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});
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}
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function setBotOptions(event, roomId, userId) {
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console.log(`Received request to set options for bot ${userId} in room ${roomId}`);
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const client = MatrixClientPeg.get();
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if (!client) {
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sendError(event, _t('You need to be logged in.'));
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return;
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}
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client.sendStateEvent(roomId, "m.room.bot.options", event.data.content, "_" + userId).done(() => {
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sendResponse(event, {
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success: true,
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});
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}, (err) => {
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sendError(event, err.message ? err.message : _t('Failed to send request.'), err);
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});
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}
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function setBotPower(event, roomId, userId, level) {
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if (!(Number.isInteger(level) && level >= 0)) {
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sendError(event, _t('Power level must be positive integer.'));
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return;
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}
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console.log(`Received request to set power level to ${level} for bot ${userId} in room ${roomId}.`);
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const client = MatrixClientPeg.get();
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if (!client) {
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sendError(event, _t('You need to be logged in.'));
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return;
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}
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client.getStateEvent(roomId, "m.room.power_levels", "").then((powerLevels) => {
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let powerEvent = new MatrixEvent(
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{
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type: "m.room.power_levels",
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content: powerLevels,
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}
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);
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client.setPowerLevel(roomId, userId, level, powerEvent).done(() => {
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sendResponse(event, {
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success: true,
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});
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}, (err) => {
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sendError(event, err.message ? err.message : _t('Failed to send request.'), err);
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});
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});
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}
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function getMembershipState(event, roomId, userId) {
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console.log(`membership_state of ${userId} in room ${roomId} requested.`);
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returnStateEvent(event, roomId, "m.room.member", userId);
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}
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function getJoinRules(event, roomId) {
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console.log(`join_rules of ${roomId} requested.`);
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returnStateEvent(event, roomId, "m.room.join_rules", "");
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}
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function botOptions(event, roomId, userId) {
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console.log(`bot_options of ${userId} in room ${roomId} requested.`);
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returnStateEvent(event, roomId, "m.room.bot.options", "_" + userId);
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}
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function getMembershipCount(event, roomId) {
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const client = MatrixClientPeg.get();
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if (!client) {
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sendError(event, _t('You need to be logged in.'));
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return;
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}
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const room = client.getRoom(roomId);
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if (!room) {
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sendError(event, _t('This room is not recognised.'));
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return;
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}
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const count = room.getJoinedMembers().length;
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sendResponse(event, count);
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}
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function canSendEvent(event, roomId) {
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const evType = "" + event.data.event_type; // force stringify
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const isState = Boolean(event.data.is_state);
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const client = MatrixClientPeg.get();
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if (!client) {
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sendError(event, _t('You need to be logged in.'));
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return;
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}
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const room = client.getRoom(roomId);
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if (!room) {
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sendError(event, _t('This room is not recognised.'));
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return;
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}
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const me = client.credentials.userId;
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const member = room.getMember(me);
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if (!member || member.membership !== "join") {
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sendError(event, _t('You are not in this room.'));
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return;
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}
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let canSend = false;
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if (isState) {
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canSend = room.currentState.maySendStateEvent(evType, me);
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}
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else {
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canSend = room.currentState.maySendEvent(evType, me);
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}
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if (!canSend) {
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sendError(event, _t('You do not have permission to do that in this room.'));
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return;
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}
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sendResponse(event, true);
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}
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function returnStateEvent(event, roomId, eventType, stateKey) {
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const client = MatrixClientPeg.get();
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if (!client) {
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sendError(event, _t('You need to be logged in.'));
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return;
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}
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const room = client.getRoom(roomId);
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if (!room) {
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sendError(event, _t('This room is not recognised.'));
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return;
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}
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const stateEvent = room.currentState.getStateEvents(eventType, stateKey);
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if (!stateEvent) {
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sendResponse(event, null);
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return;
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}
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sendResponse(event, stateEvent.getContent());
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}
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var currentRoomId = null;
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var currentRoomAlias = null;
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// Listen for when a room is viewed
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dis.register(onAction);
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function onAction(payload) {
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if (payload.action !== "view_room") {
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return;
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}
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currentRoomId = payload.room_id;
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currentRoomAlias = payload.room_alias;
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}
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const onMessage = function(event) {
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if (!event.origin) { // stupid chrome
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event.origin = event.originalEvent.origin;
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}
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// Check that the integrations UI URL starts with the origin of the event
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// This means the URL could contain a path (like /develop) and still be used
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// to validate event origins, which do not specify paths.
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// (See https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage)
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//
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// All strings start with the empty string, so for sanity return if the length
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// of the event origin is 0.
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let url = SdkConfig.get().integrations_ui_url;
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|
if (event.origin.length === 0 || !url.startsWith(event.origin) || !event.data.action) {
|
|
return; // don't log this - debugging APIs like to spam postMessage which floods the log otherwise
|
|
}
|
|
|
|
if (event.data.action === "close_scalar") {
|
|
dis.dispatch({ action: "close_scalar" });
|
|
sendResponse(event, null);
|
|
return;
|
|
}
|
|
|
|
const roomId = event.data.room_id;
|
|
const userId = event.data.user_id;
|
|
if (!roomId) {
|
|
sendError(event, _t('Missing room_id in request'));
|
|
return;
|
|
}
|
|
let promise = Promise.resolve(currentRoomId);
|
|
if (!currentRoomId) {
|
|
if (!currentRoomAlias) {
|
|
sendError(event, _t('Must be viewing a room'));
|
|
return;
|
|
}
|
|
// no room ID but there is an alias, look it up.
|
|
console.log("Looking up alias " + currentRoomAlias);
|
|
promise = MatrixClientPeg.get().getRoomIdForAlias(currentRoomAlias).then((res) => {
|
|
return res.room_id;
|
|
});
|
|
}
|
|
|
|
promise.then((viewingRoomId) => {
|
|
if (roomId !== viewingRoomId) {
|
|
sendError(event, _t('Room %(roomId)s not visible', {roomId: roomId}));
|
|
return;
|
|
}
|
|
|
|
// These APIs don't require userId
|
|
if (event.data.action === "join_rules_state") {
|
|
getJoinRules(event, roomId);
|
|
return;
|
|
} else if (event.data.action === "set_plumbing_state") {
|
|
setPlumbingState(event, roomId, event.data.status);
|
|
return;
|
|
} else if (event.data.action === "get_membership_count") {
|
|
getMembershipCount(event, roomId);
|
|
return;
|
|
} else if (event.data.action === "set_widget") {
|
|
setWidget(event, roomId);
|
|
return;
|
|
} else if (event.data.action === "get_widgets") {
|
|
getWidgets(event, roomId);
|
|
return;
|
|
} else if (event.data.action === "can_send_event") {
|
|
canSendEvent(event, roomId);
|
|
return;
|
|
}
|
|
|
|
if (!userId) {
|
|
sendError(event, _t('Missing user_id in request'));
|
|
return;
|
|
}
|
|
switch (event.data.action) {
|
|
case "membership_state":
|
|
getMembershipState(event, roomId, userId);
|
|
break;
|
|
case "invite":
|
|
inviteUser(event, roomId, userId);
|
|
break;
|
|
case "bot_options":
|
|
botOptions(event, roomId, userId);
|
|
break;
|
|
case "set_bot_options":
|
|
setBotOptions(event, roomId, userId);
|
|
break;
|
|
case "set_bot_power":
|
|
setBotPower(event, roomId, userId, event.data.level);
|
|
break;
|
|
default:
|
|
console.warn("Unhandled postMessage event with action '" + event.data.action +"'");
|
|
break;
|
|
}
|
|
}, (err) => {
|
|
console.error(err);
|
|
sendError(event, _t('Failed to lookup current room') + '.');
|
|
});
|
|
};
|
|
|
|
let listenerCount = 0;
|
|
module.exports = {
|
|
startListening: function() {
|
|
if (listenerCount === 0) {
|
|
window.addEventListener("message", onMessage, false);
|
|
}
|
|
listenerCount += 1;
|
|
},
|
|
|
|
stopListening: function() {
|
|
listenerCount -= 1;
|
|
if (listenerCount === 0) {
|
|
window.removeEventListener("message", onMessage);
|
|
}
|
|
if (listenerCount < 0) {
|
|
// Make an error so we get a stack trace
|
|
const e = new Error(
|
|
"ScalarMessaging: mismatched startListening / stopListening detected." +
|
|
" Negative count"
|
|
);
|
|
console.error(e);
|
|
}
|
|
},
|
|
};
|