diff --git a/lib/tunnelbroker/tunnelbroker-context.js b/lib/tunnelbroker/tunnelbroker-context.js index 44b8af195..18dbea44b 100644 --- a/lib/tunnelbroker/tunnelbroker-context.js +++ b/lib/tunnelbroker/tunnelbroker-context.js @@ -1,480 +1,480 @@ // @flow import invariant from 'invariant'; import _isEqual from 'lodash/fp/isEqual.js'; import * as React from 'react'; import uuid from 'uuid'; import { PeerToPeerProvider } from './peer-to-peer-context.js'; import { PeerToPeerMessageHandler } from './peer-to-peer-message-handler.js'; import type { SecondaryTunnelbrokerConnection } from './secondary-tunnelbroker-connection.js'; import { PeerOlmSessionCreatorProvider } from '../components/peer-olm-session-creator-provider.react.js'; import { tunnnelbrokerURL } from '../facts/tunnelbroker.js'; import { DMOpsQueueHandler } from '../shared/dm-ops/dm-ops-queue-handler.react.js'; import { IdentityClientContext } from '../shared/identity-client-context.js'; import { tunnelbrokerHeartbeatTimeout } from '../shared/timeouts.js'; import { isWebPlatform } from '../types/device-types.js'; import type { MessageSentStatus } from '../types/tunnelbroker/device-to-tunnelbroker-request-status-types.js'; import type { MessageToDeviceRequest } from '../types/tunnelbroker/message-to-device-request-types.js'; import type { MessageToTunnelbrokerRequest } from '../types/tunnelbroker/message-to-tunnelbroker-request-types.js'; import { deviceToTunnelbrokerMessageTypes, tunnelbrokerToDeviceMessageTypes, tunnelbrokerToDeviceMessageValidator, type TunnelbrokerToDeviceMessage, type DeviceToTunnelbrokerRequest, } from '../types/tunnelbroker/messages.js'; import type { TunnelbrokerNotif } from '../types/tunnelbroker/notif-types.js'; import type { AnonymousInitializationMessage, ConnectionInitializationMessage, TunnelbrokerInitializationMessage, TunnelbrokerDeviceTypes, } from '../types/tunnelbroker/session-types.js'; import type { Heartbeat } from '../types/websocket/heartbeat-types.js'; import { getConfig } from '../utils/config.js'; import { getContentSigningKey } from '../utils/crypto-utils.js'; import { useSelector } from '../utils/redux-utils.js'; export type TunnelbrokerClientMessageToDevice = { +deviceID: string, +payload: string, }; export type TunnelbrokerSocketListener = ( message: TunnelbrokerToDeviceMessage, ) => mixed; type PromiseCallbacks = { +resolve: () => void, +reject: (error: string) => void, }; type Promises = { [clientMessageID: string]: PromiseCallbacks }; type TunnelbrokerSocketState = | { +connected: true, +isAuthorized: boolean, } | { +connected: false, }; type TunnelbrokerContextType = { +sendMessageToDevice: ( message: TunnelbrokerClientMessageToDevice, messageID: ?string, ) => Promise, +sendNotif: (notif: TunnelbrokerNotif) => Promise, +sendMessageToTunnelbroker: (payload: string) => Promise, +addListener: (listener: TunnelbrokerSocketListener) => void, +removeListener: (listener: TunnelbrokerSocketListener) => void, +socketState: TunnelbrokerSocketState, +setUnauthorizedDeviceID: (unauthorizedDeviceID: ?string) => void, }; const TunnelbrokerContext: React.Context = React.createContext(); type Props = { +children: React.Node, +shouldBeClosed?: boolean, +onClose?: () => mixed, +secondaryTunnelbrokerConnection?: SecondaryTunnelbrokerConnection, }; function getTunnelbrokerDeviceType(): TunnelbrokerDeviceTypes { return isWebPlatform(getConfig().platformDetails.platform) ? 'web' : 'mobile'; } function createAnonymousInitMessage( deviceID: string, ): AnonymousInitializationMessage { return ({ type: 'AnonymousInitializationMessage', deviceID, deviceType: getTunnelbrokerDeviceType(), }: AnonymousInitializationMessage); } function TunnelbrokerProvider(props: Props): React.Node { const { children, shouldBeClosed, onClose, secondaryTunnelbrokerConnection } = props; const accessToken = useSelector(state => state.commServicesAccessToken); const userID = useSelector(state => state.currentUserInfo?.id); const [unauthorizedDeviceID, setUnauthorizedDeviceID] = React.useState(null); const isAuthorized = !unauthorizedDeviceID; const createInitMessage = React.useCallback(async () => { if (shouldBeClosed) { return null; } if (unauthorizedDeviceID) { return createAnonymousInitMessage(unauthorizedDeviceID); } if (!accessToken || !userID) { return null; } const deviceID = await getContentSigningKey(); if (!deviceID) { return null; } return ({ type: 'ConnectionInitializationMessage', deviceID, accessToken, userID, deviceType: getTunnelbrokerDeviceType(), }: ConnectionInitializationMessage); }, [accessToken, shouldBeClosed, unauthorizedDeviceID, userID]); const previousInitMessage = React.useRef(null); const [socketState, setSocketState] = React.useState( { connected: false }, ); const listeners = React.useRef>(new Set()); const socket = React.useRef(null); const socketSessionCounter = React.useRef(0); const promises = React.useRef({}); const heartbeatTimeoutID = React.useRef(); const identityContext = React.useContext(IdentityClientContext); invariant(identityContext, 'Identity context should be set'); const { identityClient } = identityContext; const stopHeartbeatTimeout = React.useCallback(() => { if (heartbeatTimeoutID.current) { clearTimeout(heartbeatTimeoutID.current); heartbeatTimeoutID.current = null; } }, []); const resetHeartbeatTimeout = React.useCallback(() => { stopHeartbeatTimeout(); heartbeatTimeoutID.current = setTimeout(() => { socket.current?.close(); setSocketState({ connected: false }); }, tunnelbrokerHeartbeatTimeout); }, [stopHeartbeatTimeout]); // determine if the socket is active (not closed or closing) const isSocketActive = socket.current?.readyState === WebSocket.OPEN || socket.current?.readyState === WebSocket.CONNECTING; const connectionChangePromise = React.useRef>(null); // The Tunnelbroker connection can have 4 states: // - DISCONNECTED: isSocketActive = false, connected = false // Should be in this state when initMessage is null // - CONNECTING: isSocketActive = true, connected = false // This lasts until Tunnelbroker sends ConnectionInitializationResponse // - CONNECTED: isSocketActive = true, connected = true // - DISCONNECTING: isSocketActive = false, connected = true // This lasts between socket.close() and socket.onclose() React.useEffect(() => { connectionChangePromise.current = (async () => { await connectionChangePromise.current; try { const initMessage = await createInitMessage(); const initMessageChanged = !_isEqual( previousInitMessage.current, initMessage, ); previousInitMessage.current = initMessage; // when initMessage changes, we need to close the socket // and open a new one if ( (!initMessage || initMessageChanged) && isSocketActive && socket.current ) { socket.current?.close(); return; } // when we're already connected (or pending disconnection), // or there's no init message to start with, we don't need // to do anything if (socketState.connected || !initMessage || socket.current) { return; } const tunnelbrokerSocket = new WebSocket(tunnnelbrokerURL); tunnelbrokerSocket.onopen = () => { tunnelbrokerSocket.send(JSON.stringify(initMessage)); }; tunnelbrokerSocket.onclose = () => { // this triggers the effect hook again and reconnect setSocketState({ connected: false }); onClose?.(); socket.current = null; console.log('Connection to Tunnelbroker closed'); }; tunnelbrokerSocket.onerror = e => { console.log('Tunnelbroker socket error:', e.message); }; tunnelbrokerSocket.onmessage = (event: MessageEvent) => { if (typeof event.data !== 'string') { console.log('socket received a non-string message'); return; } let rawMessage; try { rawMessage = JSON.parse(event.data); } catch (e) { console.log('error while parsing Tunnelbroker message:', e.message); return; } if (!tunnelbrokerToDeviceMessageValidator.is(rawMessage)) { console.log('invalid TunnelbrokerMessage'); return; } const message: TunnelbrokerToDeviceMessage = rawMessage; resetHeartbeatTimeout(); for (const listener of listeners.current) { listener(message); } // MESSAGE_TO_DEVICE is handled in PeerToPeerMessageHandler if ( message.type === tunnelbrokerToDeviceMessageTypes.CONNECTION_INITIALIZATION_RESPONSE ) { if (message.status.type === 'Success' && !socketState.connected) { setSocketState({ connected: true, isAuthorized }); console.log( 'session with Tunnelbroker created. isAuthorized:', isAuthorized, ); } else if ( message.status.type === 'Success' && socketState.connected ) { console.log( 'received ConnectionInitializationResponse with status: Success for already connected socket', ); } else { setSocketState({ connected: false }); console.log( 'creating session with Tunnelbroker error:', message.status.data, ); } } else if ( message.type === tunnelbrokerToDeviceMessageTypes.DEVICE_TO_TUNNELBROKER_REQUEST_STATUS ) { for (const status: MessageSentStatus of message.clientMessageIDs) { if (status.type === 'Success') { promises.current[status.data]?.resolve(); delete promises.current[status.data]; } else if (status.type === 'Error') { promises.current[status.data.id]?.reject(status.data.error); delete promises.current[status.data.id]; } else if (status.type === 'SerializationError') { console.log('SerializationError for message: ', status.data); } else if (status.type === 'InvalidRequest') { console.log('Tunnelbroker recorded InvalidRequest'); } } } else if ( message.type === tunnelbrokerToDeviceMessageTypes.HEARTBEAT ) { const heartbeat: Heartbeat = { type: deviceToTunnelbrokerMessageTypes.HEARTBEAT, }; socket.current?.send(JSON.stringify(heartbeat)); } }; socket.current = tunnelbrokerSocket; socketSessionCounter.current = socketSessionCounter.current + 1; } catch (err) { console.log('Tunnelbroker connection error:', err); } })(); }, [ isSocketActive, isAuthorized, resetHeartbeatTimeout, stopHeartbeatTimeout, identityClient, onClose, createInitMessage, socketState.connected, ]); const sendMessage: (request: DeviceToTunnelbrokerRequest) => Promise = React.useCallback( request => { return new Promise((resolve, reject) => { const socketActive = socketState.connected && socket.current; if (!shouldBeClosed && !socketActive) { throw new Error('Tunnelbroker not connected'); } promises.current[request.clientMessageID] = { resolve, reject, }; if (socketActive) { socket.current?.send(JSON.stringify(request)); } else { secondaryTunnelbrokerConnection?.sendMessage(request); } }); }, [socketState, secondaryTunnelbrokerConnection, shouldBeClosed], ); const sendMessageToDevice: ( message: TunnelbrokerClientMessageToDevice, messageID: ?string, ) => Promise = React.useCallback( (message: TunnelbrokerClientMessageToDevice, messageID: ?string) => { const clientMessageID = messageID ?? uuid.v4(); const messageToDevice: MessageToDeviceRequest = { type: deviceToTunnelbrokerMessageTypes.MESSAGE_TO_DEVICE_REQUEST, clientMessageID, deviceID: message.deviceID, payload: message.payload, }; return sendMessage(messageToDevice); }, [sendMessage], ); const sendMessageToTunnelbroker: (payload: string) => Promise = React.useCallback( (payload: string) => { const clientMessageID = uuid.v4(); const messageToTunnelbroker: MessageToTunnelbrokerRequest = { type: deviceToTunnelbrokerMessageTypes.MESSAGE_TO_TUNNELBROKER_REQUEST, clientMessageID, payload, }; return sendMessage(messageToTunnelbroker); }, [sendMessage], ); React.useEffect( () => secondaryTunnelbrokerConnection?.onSendMessage(message => { if (shouldBeClosed) { // We aren't supposed to be handling it return; } void (async () => { try { await sendMessage(message); secondaryTunnelbrokerConnection.setMessageStatus( message.clientMessageID, ); } catch (error) { secondaryTunnelbrokerConnection.setMessageStatus( message.clientMessageID, error, ); } })(); }), [secondaryTunnelbrokerConnection, sendMessage, shouldBeClosed], ); React.useEffect( () => secondaryTunnelbrokerConnection?.onMessageStatus((messageID, error) => { if (error) { promises.current[messageID].reject(error); } else { promises.current[messageID].resolve(); } delete promises.current[messageID]; }), [secondaryTunnelbrokerConnection], ); const addListener = React.useCallback( (listener: TunnelbrokerSocketListener) => { listeners.current.add(listener); }, [], ); const removeListener = React.useCallback( (listener: TunnelbrokerSocketListener) => { listeners.current.delete(listener); }, [], ); const getSessionCounter = React.useCallback( () => socketSessionCounter.current, [], ); const doesSocketExist = React.useCallback(() => !!socket.current, []); const socketSend = React.useCallback((message: string) => { socket.current?.send(message); }, []); const value: TunnelbrokerContextType = React.useMemo( () => ({ sendMessageToDevice, sendMessageToTunnelbroker, sendNotif: sendMessage, socketState, addListener, removeListener, setUnauthorizedDeviceID, }), [ sendMessageToDevice, sendMessage, sendMessageToTunnelbroker, socketState, addListener, removeListener, ], ); return ( - {children} + ); } function useTunnelbroker(): TunnelbrokerContextType { const context = React.useContext(TunnelbrokerContext); invariant(context, 'TunnelbrokerContext not found'); return context; } export { TunnelbrokerProvider, useTunnelbroker };