diff options
| -rw-r--r-- | index.html | 244 |
1 files changed, 137 insertions, 107 deletions
@@ -15,15 +15,145 @@ const WRITE_CHAR_UUID = '22210001-554a-4546-5542-46534450464d' const NOTIFY_CHAR_UUID = '22210002-554a-4546-5542-46534450464d' + class Dispatcher { + #characteristic + #sequenceNumber = 1 + #chunkSize = 16 + + constructor(characteristic) { + this.#characteristic = characteristic + } + + async dispatch(command) { + const data = this.#chunk(command.payload, command) + + for (let chunk of data) { + console.log(`Sending chunk: ${Array.from(chunk).map(b => b.toString(16).padStart(2, '0')).join(' ')}`) + await this.#characteristic.writeValueWithResponse(chunk) + await delay(500) + } + } + + #chunk(data, command) { + const packets = this.#chunked(data, this.#chunkSize) + const total = packets.length + + if (total === 0) { + return [ + this.#packetHeader( + this.#sequenceNumber++, 1, 1, // 1 of 1 packet + command.commandId + ) + ] + } + + return packets.map((chunk, index) => { + return new Uint8Array([ + ...this.#packetHeader( + this.#sequenceNumber++, index + 1, total, + command.commandId + ), + ...chunk + ]) + }) + } + + /** + * Splits an array into chunks of `size`. + * + * @param {Uint8Array} data - The array of 8-bit unsigned integers. + * @param {number} size - The size of each chunk. + */ + #chunked(data, size) { + const packets = [] + + for (let i = 0; i < data.length; i += size) { + packets.push(data.slice(i, i + size)) + } + + return packets + } + + #packetHeader(sequenceNumber, currentPacket, totalPacket, commandId) { + return new Uint8Array([ + sequenceNumber, + currentPacket << 4 | totalPacket, + 0x00, // Unencrypted flag + commandId + ]) + } + } + + class Command { + get commandId() { + throw new Error('The command ID does not exist.') + } + + get payload() { + throw new Error('The payload does not exist.') + } + } + + class HandshakeCommand extends Command { + get commandId() { + return 0x0b + } + + get payload() { + return new Uint8Array([ + 0x08, // The storage size of the token + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Token: 0 + 0x05, // The length of the version + 0x31, 0x2e, 0x30, 0x2e, 0x30 // Version: 1.0.0 + ]) + } + } + + class ConfigureWifiCommand extends Command { + #ssid + #password + + constructor(ssid, password) { + super() + this.#ssid = ssid + this.#password = password + } + + get commandId() { + return 0x15 + } + + get payload() { + const encoder = new TextEncoder() + const ssid = encoder.encode(this.#ssid) + const password = encoder.encode(this.#password) + + return new Uint8Array([ + ssid.length, ...ssid, + password.length, ...password + ]) + } + } + + class RequestIdentityCommand extends Command { + get commandId() { + return 0x16 + } + + get payload() { + return new Uint8Array([ + // + ]) + } + } + async function delay(ms) { return new Promise(resolve => setTimeout(resolve, ms)) } async function connectToDevice() { const device = await navigator.bluetooth.requestDevice({ - filters: [ - { name: DEVICE_NAME } - ], + filters: [{ name: DEVICE_NAME }], optionalServices: [MAIN_SERVICE_UUID] }) @@ -33,24 +163,13 @@ const writeChar = await service.getCharacteristic(WRITE_CHAR_UUID) const notifyChar = await service.getCharacteristic(NOTIFY_CHAR_UUID) - // 1. Enable notifications await notifyChar.startNotifications() notifyChar.addEventListener('characteristicvaluechanged', handleDeviceResponse) - await delay(500) - - // 2. Send the first bind command - await sendBindCommand(writeChar) - await delay(500) - - // 3. Send Wi-Fi credentials - const ssid = '<yourssid>' - const password = '<yourpassword>' - await sendWifiCredentialsCommand(writeChar, ssid, password) - await delay(500) - - // 4. Retrieve device ID - await sendRequestDeviceIdentityCommand(writeChar) + const dispatcher = new Dispatcher(writeChar) + await dispatcher.dispatch(new HandshakeCommand()) + await dispatcher.dispatch(new ConfigureWifiCommand('<ssid>', '<password>')) + await dispatcher.dispatch(new RequestIdentityCommand()) } function handleDeviceResponse(event) { @@ -62,95 +181,6 @@ console.log(`Received data from device: ${receivedBytes.join(' ')}`) } - async function sendBindCommand(writeChar) { - const handshakePacket = new Uint8Array([ - // --- 4-byte Header --- - 0x01, // Sequence Number: 1 - 0x11, // Packet Info: (Packet 1 of 1) - 0x00, // Command ID: 11 (Big Endian Short, MSB) - 0x0B, // Command ID: 11 (Big Endian Short, LSB) - - // --- 15-byte Payload --- - 0x08, // Hardcoded first byte of payload - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Token (as 0L) - 0x05, // Length of version string "1.0.0" - 0x31, 0x2e, 0x30, 0x2e, 0x30 // ASCII for "1.0.0" - ]) - - await sendRawData(writeChar, handshakePacket) - } - - async function sendWifiCredentialsCommand(writeChar, ssid, password) { - const encoder = new TextEncoder() - const ssidBytes = encoder.encode(ssid) - const passwordBytes = encoder.encode(password) - - const ssidLenSize = 1 - const ssidSize = ssidBytes.length - const passwordLenSize = 1 - const passwordSize = passwordBytes.length - const plaintextPayload = new Uint8Array(ssidLenSize + ssidSize + passwordLenSize + passwordSize) - - let offset = 0 - - plaintextPayload[offset] = ssidSize - offset++ - - plaintextPayload.set(ssidBytes, offset) - offset += ssidSize - - plaintextPayload[offset] = passwordSize - offset++ - - plaintextPayload.set(passwordBytes, offset) - - const packet1 = new Uint8Array([ - // Header (4 bytes) - 0x02, // Sequence Number: 2 - 0x12, // Packet Info: (Packet 1 of 2) - 0x00, // Command ID: 21, Enc-Flag: 0 (Big Endian) - 0x15, - ...plaintextPayload.slice(0, 16) - ]) - - const packet2 = new Uint8Array([ - // Header (4 bytes) - 0x03, // Sequence Number: 3 - 0x22, // Packet Info: (Packet 2 of 2) - 0x00, // Command ID: 21, Enc-Flag: 0 (Big Endian) - 0x15, - ...plaintextPayload.slice(16) - ]) - - console.log('Sending Wi-Fi credentials packet 1/2...') - await sendRawData(writeChar, packet1) - await delay(100) - - console.log('Sending Wi-Fi credentials packet 2/2...') - await sendRawData(writeChar, packet2) - } - - async function sendRequestDeviceIdentityCommand(writeChar) { - const packet = new Uint8Array([ - // Header (4 bytes) - 0x04, // Sequence Number: 4 - 0x11, // Packet Info: (Packet 1 of 1) - 0x00, // Command ID: 22, Enc-Flag: 0 (Big Endian) - 0x16 - ]) - - await sendRawData(writeChar, packet) - } - - async function sendRawData(characteristic, data) { - const chunkSize = 20 - for (let i = 0; i < data.length; i += chunkSize) { - const chunk = data.slice(i, i + chunkSize) - console.log(`Sending chunk: ${Array.from(chunk).map(b => b.toString(16).padStart(2, '0')).join(' ')}`) - await characteristic.writeValueWithResponse(chunk) - } - } - const connect = document.getElementById('connect') connect.addEventListener('click', connectToDevice) </script> |