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66a7748d JB |
1 | import type { IncomingMessage } from 'node:http' |
2 | import type { Duplex } from 'node:stream' | |
8114d10e | 3 | |
66a7748d JB |
4 | import { StatusCodes } from 'http-status-codes' |
5 | import { type RawData, WebSocket, WebSocketServer } from 'ws' | |
8114d10e | 6 | |
66a7748d JB |
7 | import { AbstractUIServer } from './AbstractUIServer.js' |
8 | import { UIServerUtils } from './UIServerUtils.js' | |
268a74bb JB |
9 | import { |
10 | type ProtocolRequest, | |
11 | type ProtocolResponse, | |
12 | type UIServerConfiguration, | |
66a7748d JB |
13 | WebSocketCloseEventStatusCode |
14 | } from '../../types/index.js' | |
9bf0ef23 JB |
15 | import { |
16 | Constants, | |
a66bbcfe | 17 | JSONStringifyWithMapSupport, |
9bf0ef23 JB |
18 | getWebSocketCloseEventStatusString, |
19 | isNotEmptyString, | |
9bf0ef23 JB |
20 | logPrefix, |
21 | logger, | |
66a7748d JB |
22 | validateUUID |
23 | } from '../../utils/index.js' | |
4198ad5c | 24 | |
66a7748d | 25 | const moduleName = 'UIWebSocketServer' |
32de5a57 | 26 | |
268a74bb | 27 | export class UIWebSocketServer extends AbstractUIServer { |
66a7748d | 28 | private readonly webSocketServer: WebSocketServer |
eb3abc4f | 29 | |
66a7748d JB |
30 | public constructor (protected readonly uiServerConfiguration: UIServerConfiguration) { |
31 | super(uiServerConfiguration) | |
eb3abc4f | 32 | this.webSocketServer = new WebSocketServer({ |
ed3d2808 | 33 | handleProtocols: UIServerUtils.handleProtocols, |
66a7748d JB |
34 | noServer: true |
35 | }) | |
4198ad5c JB |
36 | } |
37 | ||
66a7748d JB |
38 | public start (): void { |
39 | this.webSocketServer.on('connection', (ws: WebSocket, _req: IncomingMessage): void => { | |
40 | if (!UIServerUtils.isProtocolAndVersionSupported(ws.protocol)) { | |
a92929f1 JB |
41 | logger.error( |
42 | `${this.logPrefix( | |
43 | moduleName, | |
66a7748d JB |
44 | 'start.server.onconnection' |
45 | )} Unsupported UI protocol version: '${ws.protocol}'` | |
46 | ) | |
47 | ws.close(WebSocketCloseEventStatusCode.CLOSE_PROTOCOL_ERROR) | |
a92929f1 | 48 | } |
66a7748d JB |
49 | const [, version] = UIServerUtils.getProtocolAndVersion(ws.protocol) |
50 | this.registerProtocolVersionUIService(version) | |
a974c8e4 | 51 | ws.on('message', rawData => { |
66a7748d | 52 | const request = this.validateRawDataRequest(rawData) |
5dea4c94 | 53 | if (request === false) { |
66a7748d JB |
54 | ws.close(WebSocketCloseEventStatusCode.CLOSE_INVALID_PAYLOAD) |
55 | return | |
5dea4c94 | 56 | } |
97608fbd | 57 | const [requestId] = request |
66a7748d | 58 | this.responseHandlers.set(requestId, ws) |
0b22144c JB |
59 | this.uiServices |
60 | .get(version) | |
61 | ?.requestHandler(request) | |
4a3807d1 | 62 | .then((protocolResponse?: ProtocolResponse) => { |
66a7748d JB |
63 | if (protocolResponse != null) { |
64 | this.sendResponse(protocolResponse) | |
0b22144c JB |
65 | } |
66 | }) | |
66a7748d JB |
67 | .catch(Constants.EMPTY_FUNCTION) |
68 | }) | |
a974c8e4 | 69 | ws.on('error', error => { |
66a7748d JB |
70 | logger.error(`${this.logPrefix(moduleName, 'start.ws.onerror')} WebSocket error:`, error) |
71 | }) | |
5e3cb728 JB |
72 | ws.on('close', (code, reason) => { |
73 | logger.debug( | |
74 | `${this.logPrefix( | |
75 | moduleName, | |
66a7748d | 76 | 'start.ws.onclose' |
9bf0ef23 | 77 | )} WebSocket closed: '${getWebSocketCloseEventStatusString( |
66a7748d JB |
78 | code |
79 | )}' - '${reason.toString()}'` | |
80 | ) | |
81 | }) | |
82 | }) | |
83 | this.httpServer.on('connect', (req: IncomingMessage, socket: Duplex, _head: Buffer) => { | |
5199f9fd | 84 | if (req.headers.connection !== 'Upgrade' || req.headers.upgrade !== 'websocket') { |
66a7748d JB |
85 | socket.write(`HTTP/1.1 ${StatusCodes.BAD_REQUEST} Bad Request\r\n\r\n`) |
86 | socket.destroy() | |
cbf9b878 | 87 | } |
66a7748d | 88 | }) |
60a74391 | 89 | this.httpServer.on('upgrade', (req: IncomingMessage, socket: Duplex, head: Buffer): void => { |
a974c8e4 | 90 | this.authenticate(req, err => { |
66a7748d JB |
91 | if (err != null) { |
92 | socket.write(`HTTP/1.1 ${StatusCodes.UNAUTHORIZED} Unauthorized\r\n\r\n`) | |
93 | socket.destroy() | |
94 | return | |
60a74391 JB |
95 | } |
96 | try { | |
97 | this.webSocketServer.handleUpgrade(req, socket, head, (ws: WebSocket) => { | |
66a7748d JB |
98 | this.webSocketServer.emit('connection', ws, req) |
99 | }) | |
60a74391 JB |
100 | } catch (error) { |
101 | logger.error( | |
102 | `${this.logPrefix( | |
103 | moduleName, | |
66a7748d | 104 | 'start.httpServer.on.upgrade' |
60a74391 | 105 | )} Error at handling connection upgrade:`, |
66a7748d JB |
106 | error |
107 | ) | |
60a74391 | 108 | } |
66a7748d JB |
109 | }) |
110 | }) | |
111 | this.startHttpServer() | |
4198ad5c JB |
112 | } |
113 | ||
66a7748d JB |
114 | public sendRequest (request: ProtocolRequest): void { |
115 | this.broadcastToClients(JSON.stringify(request)) | |
02a6943a JB |
116 | } |
117 | ||
66a7748d | 118 | public sendResponse (response: ProtocolResponse): void { |
5199f9fd | 119 | const responseId = response[0] |
976d11ec | 120 | try { |
1ca4a038 | 121 | if (this.hasResponseHandler(responseId)) { |
66a7748d | 122 | const ws = this.responseHandlers.get(responseId) as WebSocket |
5199f9fd | 123 | if (ws.readyState === WebSocket.OPEN) { |
a66bbcfe | 124 | ws.send(JSONStringifyWithMapSupport(response)) |
e2c77f10 JB |
125 | } else { |
126 | logger.error( | |
127 | `${this.logPrefix( | |
128 | moduleName, | |
66a7748d | 129 | 'sendResponse' |
5199f9fd JB |
130 | )} Error at sending response id '${responseId}', WebSocket is not open: ${ |
131 | ws.readyState | |
132 | }` | |
66a7748d | 133 | ) |
976d11ec | 134 | } |
976d11ec JB |
135 | } else { |
136 | logger.error( | |
137 | `${this.logPrefix( | |
138 | moduleName, | |
66a7748d JB |
139 | 'sendResponse' |
140 | )} Response for unknown request id: ${responseId}` | |
141 | ) | |
94dc3080 | 142 | } |
976d11ec | 143 | } catch (error) { |
94dc3080 JB |
144 | logger.error( |
145 | `${this.logPrefix( | |
146 | moduleName, | |
66a7748d | 147 | 'sendResponse' |
976d11ec | 148 | )} Error at sending response id '${responseId}':`, |
66a7748d JB |
149 | error |
150 | ) | |
e2c77f10 | 151 | } finally { |
66a7748d | 152 | this.responseHandlers.delete(responseId) |
94dc3080 | 153 | } |
178ac666 JB |
154 | } |
155 | ||
8b7072dc | 156 | public logPrefix = (modName?: string, methodName?: string, prefixSuffix?: string): string => { |
66a7748d JB |
157 | const logMsgPrefix = |
158 | prefixSuffix != null ? `UI WebSocket Server ${prefixSuffix}` : 'UI WebSocket Server' | |
32de5a57 | 159 | const logMsg = |
9bf0ef23 | 160 | isNotEmptyString(modName) && isNotEmptyString(methodName) |
1b271a54 | 161 | ? ` ${logMsgPrefix} | ${modName}.${methodName}:` |
66a7748d JB |
162 | : ` ${logMsgPrefix} |` |
163 | return logPrefix(logMsg) | |
164 | } | |
178ac666 | 165 | |
66a7748d | 166 | private broadcastToClients (message: string): void { |
eb3abc4f | 167 | for (const client of this.webSocketServer.clients) { |
5199f9fd | 168 | if (client.readyState === WebSocket.OPEN) { |
66a7748d | 169 | client.send(message) |
178ac666 JB |
170 | } |
171 | } | |
172 | } | |
5e3cb728 | 173 | |
66a7748d | 174 | private validateRawDataRequest (rawData: RawData): ProtocolRequest | false { |
5e3cb728 JB |
175 | // logger.debug( |
176 | // `${this.logPrefix( | |
177 | // moduleName, | |
66a7748d | 178 | // 'validateRawDataRequest' |
e1d9a0f4 | 179 | // // eslint-disable-next-line @typescript-eslint/no-base-to-string |
66a7748d JB |
180 | // )} Raw data received in string format: ${rawData.toString()}` |
181 | // ) | |
5e3cb728 | 182 | |
e1d9a0f4 | 183 | // eslint-disable-next-line @typescript-eslint/no-base-to-string |
66a7748d | 184 | const request = JSON.parse(rawData.toString()) as ProtocolRequest |
5e3cb728 | 185 | |
66a7748d | 186 | if (!Array.isArray(request)) { |
5dea4c94 JB |
187 | logger.error( |
188 | `${this.logPrefix( | |
189 | moduleName, | |
66a7748d | 190 | 'validateRawDataRequest' |
5dea4c94 | 191 | )} UI protocol request is not an array:`, |
66a7748d JB |
192 | request |
193 | ) | |
194 | return false | |
5e3cb728 JB |
195 | } |
196 | ||
5199f9fd | 197 | // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition |
5e3cb728 | 198 | if (request.length !== 3) { |
5dea4c94 JB |
199 | logger.error( |
200 | `${this.logPrefix(moduleName, 'validateRawDataRequest')} UI protocol request is malformed:`, | |
66a7748d JB |
201 | request |
202 | ) | |
203 | return false | |
5dea4c94 JB |
204 | } |
205 | ||
5199f9fd | 206 | if (!validateUUID(request[0])) { |
5dea4c94 JB |
207 | logger.error( |
208 | `${this.logPrefix( | |
209 | moduleName, | |
66a7748d | 210 | 'validateRawDataRequest' |
5dea4c94 | 211 | )} UI protocol request UUID field is invalid:`, |
66a7748d JB |
212 | request |
213 | ) | |
214 | return false | |
5e3cb728 JB |
215 | } |
216 | ||
66a7748d | 217 | return request |
5e3cb728 | 218 | } |
4198ad5c | 219 | } |