session-ios/SignalUtilitiesKit/DeviceLink.swift

97 lines
3.5 KiB
Swift

@objc(LKDeviceLink)
public final class DeviceLink : NSObject, NSCoding {
@objc public let master: Device
@objc public let slave: Device
@objc public var isAuthorized: Bool { return master.signature != nil }
@objc public var other: Device {
let userPublicKey = getUserHexEncodedPublicKey()
return (userPublicKey == master.publicKey) ? slave : master
}
// MARK: Device
@objc(LKDevice)
public final class Device : NSObject, NSCoding {
@objc public let publicKey: String
@objc public let signature: Data?
@objc public var displayName: String {
if let customDisplayName = UserDefaults.standard[.slaveDeviceName(publicKey)] {
return customDisplayName
} else {
return NSLocalizedString("Unnamed Device", comment: "")
}
}
@objc public init(publicKey: String, signature: Data? = nil) {
self.publicKey = publicKey
self.signature = signature
}
@objc public init?(coder: NSCoder) {
publicKey = coder.decodeObject(forKey: "hexEncodedPublicKey") as! String
signature = coder.decodeObject(forKey: "signature") as! Data?
}
@objc public func encode(with coder: NSCoder) {
coder.encode(publicKey, forKey: "hexEncodedPublicKey")
if let signature = signature { coder.encode(signature, forKey: "signature") }
}
@objc public override func isEqual(_ other: Any?) -> Bool {
guard let other = other as? Device else { return false }
return publicKey == other.publicKey && signature == other.signature
}
@objc override public var hash: Int { // Override NSObject.hash and not Hashable.hashValue or Hashable.hash(into:)
var result = publicKey.hashValue
if let signature = signature { result = result ^ signature.hashValue }
return result
}
@objc override public var description: String { return publicKey }
}
// MARK: Lifecycle
@objc public init(between master: Device, and slave: Device) {
self.master = master
self.slave = slave
}
// MARK: Coding
@objc public init?(coder: NSCoder) {
master = coder.decodeObject(forKey: "master") as! Device
slave = coder.decodeObject(forKey: "slave") as! Device
super.init()
}
@objc public func encode(with coder: NSCoder) {
coder.encode(master, forKey: "master")
coder.encode(slave, forKey: "slave")
}
// MARK: JSON
public func toJSON() -> JSON {
var result = [ "primaryDevicePubKey" : master.publicKey, "secondaryDevicePubKey" : slave.publicKey ]
if let masterSignature = master.signature { result["grantSignature"] = masterSignature.base64EncodedString() }
if let slaveSignature = slave.signature { result["requestSignature"] = slaveSignature.base64EncodedString() }
return result
}
// MARK: Equality
@objc override public func isEqual(_ other: Any?) -> Bool {
guard let other = other as? DeviceLink else { return false }
return master == other.master && slave == other.slave
}
// MARK: Hashing
@objc override public var hash: Int { // Override NSObject.hash and not Hashable.hashValue or Hashable.hash(into:)
return master.hash ^ slave.hash
}
// MARK: Description
@objc override public var description: String { return "\(master) - \(slave)" }
}