Move to Bytes from Data, simplify result cases

This commit is contained in:
Christoph Hagen 2022-04-08 13:33:09 +02:00
parent f9039c7b3a
commit 1c6c29d585
5 changed files with 33 additions and 41 deletions

View File

@ -24,10 +24,6 @@ struct DeviceResponse {
.init(event: .noBodyData)
}
static var corruptkeyData: DeviceResponse {
.init(event: .corruptkeyData)
}
static var operationInProgress: DeviceResponse {
.init(event: .operationInProgress)
}
@ -39,7 +35,7 @@ struct DeviceResponse {
let response: Message?
init?(_ buffer: ByteBuffer) {
guard let byte = buffer.getData(at: 0, length: 1) else {
guard let byte = buffer.getBytes(at: 0, length: 1) else {
print("No bytes received from device")
return nil
}

View File

@ -1,7 +1,6 @@
import Foundation
import CryptoKit
import NIOCore
import Vapor
struct Message: Equatable, Hashable {
@ -20,9 +19,9 @@ struct Message: Equatable, Hashable {
self.id = id
}
init(decodeFrom data: Data) {
self.time = UInt32(data: data[data.startIndex..<data.startIndex+4])
self.id = UInt32(data: data[data.startIndex+4..<data.startIndex+8])
init<T: Sequence>(decodeFrom data: T) where T.Element == UInt8 {
self.time = UInt32(data: data.prefix(4))
self.id = UInt32(data: data.dropFirst(4))
}
static var length: Int {
@ -59,16 +58,16 @@ struct Message: Equatable, Hashable {
}
init?(decodeFrom buffer: ByteBuffer) {
guard let data = buffer.getData(at: 0, length: Message.length) else {
guard let data = buffer.getBytes(at: 0, length: Message.length) else {
return nil
}
self.init(decodeFrom: data)
}
private init(decodeFrom data: Data) {
private init<T: Sequence>(decodeFrom data: T) where T.Element == UInt8 {
let count = SHA256Digest.byteCount
self.mac = data[data.startIndex..<data.startIndex+count]
self.content = .init(decodeFrom: data.advanced(by: count))
self.mac = Data(data.prefix(count))
self.content = .init(decodeFrom: Array(data.dropFirst(count)))
}
func isValid(using key: SymmetricKey) -> Bool {
@ -86,13 +85,12 @@ struct Message: Equatable, Hashable {
extension UInt32 {
init(data: Data) {
init<T: Sequence>(data: T) where T.Element == UInt8 {
self = data
.reversed()
.enumerated()
.map { UInt32($0.element) << ($0.offset * 8) }
.reduce(0, +)
}
var encoded: Data {

View File

@ -27,15 +27,9 @@ enum MessageResult: UInt8 {
case messageAccepted = 7
/// The device produced an unknown error
case unknownDeviceError = 9
/// The request did not contain body data with the key
case noBodyData = 10
/// The body data could not be read
case corruptkeyData = 11
/// The device is not connected
case deviceNotConnected = 12
@ -64,12 +58,8 @@ extension MessageResult: CustomStringConvertible {
return "Message counter invalid"
case .messageAccepted:
return "Message accepted"
case .unknownDeviceError:
return "The device experienced an unknown error"
case .noBodyData:
return "No body data included in the request"
case .corruptkeyData:
return "Key data corrupted"
case .deviceNotConnected:
return "Device not connected"
case .deviceTimedOut:

View File

@ -33,7 +33,7 @@ func routes(_ app: Application) throws {
}
/**
Post a key to the device for unlocking.
Post a message to the device for unlocking.
The request returns one or `Message.length+1` bytes of data, where the first byte is the raw value of a `MessageResult`,
and the optional following bytes contain the response message of the device. This request does not complete until either the device responds or the request times out. The timeout is specified by `KeyManagement.deviceTimeout`.
@ -45,9 +45,9 @@ func routes(_ app: Application) throws {
}
/**
Start a new websocket connection for the client to receive table updates from the server
Start a new websocket connection for the device to receive messages from the server
- Returns: Nothing
- Note: The first (and only) message from the client over the connection must be a valid session token.
- Note: The first message from the device over the connection must be a valid auth token.
*/
app.webSocket(PublicAPI.socket.path) { req, socket in
socket.onBinary { _, data in

View File

@ -12,11 +12,11 @@ final class AppTests: XCTestCase {
func testEncodingContent() {
let input = Message.Content(time: 1234567890, id: 23456789)
let data = input.encoded
let data = input.bytes
let output = Message.Content(decodeFrom: data)
XCTAssertEqual(input, output)
let data2 = Data([42, 42]) + data
let output2 = Message.Content(decodeFrom: Data(data2[2...]))
let data2 = [42, 42] + data
let output2 = Message.Content(decodeFrom: data2[2...])
XCTAssertEqual(input, output2)
}
@ -42,4 +42,12 @@ final class AppTests: XCTestCase {
XCTAssertEqual(decoded!, input)
XCTAssertEqual(content, input.content)
}
func testMessageTransmission() throws {
let app = Application(.testing)
defer { app.shutdown() }
try configure(app)
// How to open a socket via request?
}
}