/var/lang/lib/node_modules/npm/node_modules/undici/lib/web/websocket
This explorer reads the filesystem of the server it runs on, so /workspace/user isn't present here. Browsing and the terminal still work against this server's own disk from /.
'use strict' const { maxUnsigned16Bit } = require('./constants') const BUFFER_SIZE = 16386 /** @type {import('crypto')} */let cryptolet buffer = nulllet bufIdx = BUFFER_SIZE try { crypto = require('node:crypto')/* c8 ignore next 3 */} catch { crypto = { // not full compatibility, but minimum. randomFillSync: function randomFillSync (buffer, _offset, _size) { for (let i = 0; i < buffer.length; ++i) { buffer[i] = Math.random() * 255 | 0 } return buffer } }} function generateMask () { if (bufIdx === BUFFER_SIZE) { bufIdx = 0 crypto.randomFillSync((buffer ??= Buffer.allocUnsafe(BUFFER_SIZE)), 0, BUFFER_SIZE) } return [buffer[bufIdx++], buffer[bufIdx++], buffer[bufIdx++], buffer[bufIdx++]]} class WebsocketFrameSend { /** * @param {Buffer|undefined} data */ constructor (data) { this.frameData = data } createFrame (opcode) { const frameData = this.frameData const maskKey = generateMask() const bodyLength = frameData?.byteLength ?? 0 /** @type {number} */ let payloadLength = bodyLength // 0-125 let offset = 6 if (bodyLength > maxUnsigned16Bit) { offset += 8 // payload length is next 8 bytes payloadLength = 127 } else if (bodyLength > 125) { offset += 2 // payload length is next 2 bytes payloadLength = 126 } const buffer = Buffer.allocUnsafe(bodyLength + offset) // Clear first 2 bytes, everything else is overwritten buffer[0] = buffer[1] = 0 buffer[0] |= 0x80 // FIN buffer[0] = (buffer[0] & 0xF0) + opcode // opcode /*! ws. MIT License. Einar Otto Stangvik <einaros@gmail.com> */ buffer[offset - 4] = maskKey[0] buffer[offset - 3] = maskKey[1] buffer[offset - 2] = maskKey[2] buffer[offset - 1] = maskKey[3] buffer[1] = payloadLength if (payloadLength === 126) { buffer.writeUInt16BE(bodyLength, 2) } else if (payloadLength === 127) { // Clear extended payload length buffer[2] = buffer[3] = 0 buffer.writeUIntBE(bodyLength, 4, 6) } buffer[1] |= 0x80 // MASK // mask body for (let i = 0; i < bodyLength; ++i) { buffer[offset + i] = frameData[i] ^ maskKey[i & 3] } return buffer }} module.exports = { WebsocketFrameSend}