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| 1 | +import * as fs from 'fs'; |
| 2 | +import * as http from 'http'; |
| 3 | +import * as https from 'https'; |
| 4 | +import type { AddressInfo } from 'net'; |
| 5 | +import * as os from 'os'; |
| 6 | +import * as path from 'path'; |
| 7 | +import * as util from 'util'; |
| 8 | +import * as zlib from 'zlib'; |
| 9 | +import type { Envelope } from '@sentry/types'; |
| 10 | +import { parseEnvelope } from '@sentry/utils'; |
| 11 | + |
| 12 | +const writeFile = util.promisify(fs.writeFile); |
| 13 | + |
| 14 | +interface EventProxyServerOptions { |
| 15 | + /** Port to start the event proxy server at. */ |
| 16 | + port: number; |
| 17 | + /** The name for the proxy server used for referencing it with listener functions */ |
| 18 | + proxyServerName: string; |
| 19 | +} |
| 20 | + |
| 21 | +interface SentryRequestCallbackData { |
| 22 | + envelope: Envelope; |
| 23 | + rawProxyRequestBody: string; |
| 24 | + rawSentryResponseBody: string; |
| 25 | + sentryResponseStatusCode?: number; |
| 26 | +} |
| 27 | + |
| 28 | +/** |
| 29 | + * Starts an event proxy server that will proxy events to sentry when the `tunnel` option is used. Point the `tunnel` |
| 30 | + * option to this server (like this `tunnel: http://localhost:${port option}/`). |
| 31 | + * |
| 32 | + */ |
| 33 | +export async function startEventProxyServer(options: EventProxyServerOptions): Promise<void> { |
| 34 | + const eventCallbackListeners: Set<(data: string) => void> = new Set(); |
| 35 | + |
| 36 | + const proxyServer = http.createServer((proxyRequest, proxyResponse) => { |
| 37 | + const proxyRequestChunks: Uint8Array[] = []; |
| 38 | + |
| 39 | + proxyRequest.addListener('data', (chunk: Buffer) => { |
| 40 | + proxyRequestChunks.push(chunk); |
| 41 | + }); |
| 42 | + |
| 43 | + proxyRequest.addListener('error', err => { |
| 44 | + throw err; |
| 45 | + }); |
| 46 | + |
| 47 | + proxyRequest.addListener('end', () => { |
| 48 | + const proxyRequestBody = |
| 49 | + proxyRequest.headers['content-encoding'] === 'gzip' |
| 50 | + ? zlib.gunzipSync(Buffer.concat(proxyRequestChunks)).toString() |
| 51 | + : Buffer.concat(proxyRequestChunks).toString(); |
| 52 | + |
| 53 | + let envelopeHeader = JSON.parse(proxyRequestBody.split('\n')[0]); |
| 54 | + |
| 55 | + if (!envelopeHeader.dsn) { |
| 56 | + throw new Error( |
| 57 | + '[event-proxy-server] No dsn on envelope header. Please set tunnel option.', |
| 58 | + ); |
| 59 | + } |
| 60 | + |
| 61 | + const { origin, pathname, host } = new URL(envelopeHeader.dsn); |
| 62 | + |
| 63 | + const projectId = pathname.substring(1); |
| 64 | + const sentryIngestUrl = `${origin}/api/${projectId}/envelope/`; |
| 65 | + |
| 66 | + proxyRequest.headers.host = host; |
| 67 | + |
| 68 | + const sentryResponseChunks: Uint8Array[] = []; |
| 69 | + |
| 70 | + const sentryRequest = https.request( |
| 71 | + sentryIngestUrl, |
| 72 | + { headers: proxyRequest.headers, method: proxyRequest.method }, |
| 73 | + sentryResponse => { |
| 74 | + sentryResponse.addListener('data', (chunk: Buffer) => { |
| 75 | + proxyResponse.write(chunk, 'binary'); |
| 76 | + sentryResponseChunks.push(chunk); |
| 77 | + }); |
| 78 | + |
| 79 | + sentryResponse.addListener('end', () => { |
| 80 | + eventCallbackListeners.forEach(listener => { |
| 81 | + const rawSentryResponseBody = Buffer.concat(sentryResponseChunks).toString(); |
| 82 | + |
| 83 | + const data: SentryRequestCallbackData = { |
| 84 | + envelope: parseEnvelope(proxyRequestBody, new TextEncoder(), new TextDecoder()), |
| 85 | + rawProxyRequestBody: proxyRequestBody, |
| 86 | + rawSentryResponseBody, |
| 87 | + sentryResponseStatusCode: sentryResponse.statusCode, |
| 88 | + }; |
| 89 | + |
| 90 | + listener(Buffer.from(JSON.stringify(data)).toString('base64')); |
| 91 | + }); |
| 92 | + proxyResponse.end(); |
| 93 | + }); |
| 94 | + |
| 95 | + sentryResponse.addListener('error', err => { |
| 96 | + throw err; |
| 97 | + }); |
| 98 | + |
| 99 | + proxyResponse.writeHead(sentryResponse.statusCode || 500, sentryResponse.headers); |
| 100 | + }, |
| 101 | + ); |
| 102 | + |
| 103 | + sentryRequest.write(Buffer.concat(proxyRequestChunks), 'binary'); |
| 104 | + sentryRequest.end(); |
| 105 | + }); |
| 106 | + }); |
| 107 | + |
| 108 | + const proxyServerStartupPromise = new Promise<void>(resolve => { |
| 109 | + proxyServer.listen(options.port, () => { |
| 110 | + resolve(); |
| 111 | + }); |
| 112 | + }); |
| 113 | + |
| 114 | + const eventCallbackServer = http.createServer((eventCallbackRequest, eventCallbackResponse) => { |
| 115 | + eventCallbackResponse.statusCode = 200; |
| 116 | + eventCallbackResponse.setHeader('connection', 'keep-alive'); |
| 117 | + |
| 118 | + const callbackListener = (data: string): void => { |
| 119 | + eventCallbackResponse.write(data.concat('\n'), 'utf8'); |
| 120 | + }; |
| 121 | + |
| 122 | + eventCallbackListeners.add(callbackListener); |
| 123 | + |
| 124 | + eventCallbackRequest.on('close', () => { |
| 125 | + eventCallbackListeners.delete(callbackListener); |
| 126 | + }); |
| 127 | + |
| 128 | + eventCallbackRequest.on('error', () => { |
| 129 | + eventCallbackListeners.delete(callbackListener); |
| 130 | + }); |
| 131 | + }); |
| 132 | + |
| 133 | + const eventCallbackServerStartupPromise = new Promise<void>(resolve => { |
| 134 | + eventCallbackServer.listen(0, () => { |
| 135 | + const port = String((eventCallbackServer.address() as AddressInfo).port); |
| 136 | + void registerCallbackServerPort(options.proxyServerName, port).then(resolve); |
| 137 | + }); |
| 138 | + }); |
| 139 | + |
| 140 | + await eventCallbackServerStartupPromise; |
| 141 | + await proxyServerStartupPromise; |
| 142 | + return; |
| 143 | +} |
| 144 | + |
| 145 | +const TEMP_FILE_PREFIX = 'event-proxy-server-'; |
| 146 | + |
| 147 | +async function registerCallbackServerPort(serverName: string, port: string): Promise<void> { |
| 148 | + const tmpFilePath = path.join(os.tmpdir(), `${TEMP_FILE_PREFIX}${serverName}`); |
| 149 | + await writeFile(tmpFilePath, port, { encoding: 'utf8' }); |
| 150 | +} |
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