[Auth] Pairing Services

.swiftpm/xcode/xcshareddata/xcschemes/WalletConnectAuth.xcscheme

@@ -0,0 +1,67 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1340"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "WalletConnectAuth"
+               BuildableName = "WalletConnectAuth"
+               BlueprintName = "WalletConnectAuth"
+               ReferencedContainer = "container:">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "WalletConnectAuth"
+            BuildableName = "WalletConnectAuth"
+            BlueprintName = "WalletConnectAuth"
+            ReferencedContainer = "container:">
+         </BuildableReference>
+      </MacroExpansion>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

Example/DApp/SceneDelegate.swift

@@ -1,6 +1,7 @@
 import UIKit
 import WalletConnectSign
 import WalletConnectRelay
+import WalletConnectUtils
 import Combine
 import Starscream
 

Example/ExampleApp/SceneDelegate.swift

@@ -1,6 +1,7 @@
 import UIKit
 import WalletConnectSign
 import WalletConnectRelay
+import WalletConnectUtils
 import Starscream
 
 extension WebSocket: WebSocketConnecting { }

Package.swift

@@ -15,7 +15,7 @@ let package = Package(
             targets: ["WalletConnectSign"]),
         .library(
             name: "WalletConnectChat",
-            targets: ["Chat"])
+            targets: ["Chat"]),
     ],
     dependencies: [],
     targets: [

Sources/Auth/Services/App/AppPairService.swift

@@ -0,0 +1,25 @@
+import Foundation
+import WalletConnectKMS
+import WalletConnectUtils
+
+actor AppPairService {
+    private let networkingInteractor: NetworkInteracting
+    private let kms: KeyManagementServiceProtocol
+    private let pairingStorage: WCPairingStorage
+
+    init(networkingInteractor: NetworkInteracting, kms: KeyManagementServiceProtocol, pairingStorage: WCPairingStorage) {
+        self.networkingInteractor = networkingInteractor
+        self.kms = kms
+        self.pairingStorage = pairingStorage
+    }
+
+    func create() async throws -> WalletConnectURI {
+        let topic = String.generateTopic()
+        try await networkingInteractor.subscribe(topic: topic)
+        let symKey = try! kms.createSymmetricKey(topic)
+        let pairing = WCPairing(topic: topic)
+        let uri = WalletConnectURI(topic: topic, symKey: symKey.hexRepresentation, relay: pairing.relay)
+        pairingStorage.setPairing(pairing)
+        return uri
+    }
+}

Sources/Auth/Services/Common/NetworkingInteractor.swift

@@ -0,0 +1,18 @@
+import Foundation
+import WalletConnectRelay
+
+protocol NetworkInteracting {
+    func subscribe(topic: String) async throws
+}
+
+class NetworkingInteractor: NetworkInteracting {
+    private let relayClient: RelayClient
+
+    init(relayClient: RelayClient) {
+        self.relayClient = relayClient
+    }
+
+    func subscribe(topic: String) async throws {
+        try await relayClient.subscribe(topic: topic)
+    }
+}

Sources/Auth/Services/Wallet/AuthService.swift

@@ -1,6 +1,30 @@
 import Foundation
 
 actor AuthService {
+    enum Errors: Error {
+        case malformedPairingURI
+    }
+
+    private let appPairService: AppPairService
+
+    private let walletPairService: WalletPairService
+
+    init(appPairService: AppPairService, walletPairService: WalletPairService) {
+        self.appPairService = appPairService
+        self.walletPairService = walletPairService
+    }
+
+    func connect() async throws -> String {
+        let uri = try await appPairService.create()
+        return uri.absoluteString
+    }
+
+    func pair(uri: String) async throws {
+        guard let pairingURI = WalletConnectURI(string: uri) else {
+            throw Errors.malformedPairingURI
+        }
+        try await walletPairService.pair(pairingURI)
+    }
 
     func respond(respondParams: RespondParams) async throws {
 

Sources/Auth/Services/Wallet/WalletPairService.swift

@@ -0,0 +1,37 @@
+import Foundation
+import WalletConnectKMS
+import WalletConnectUtils
+
+actor WalletPairService {
+    enum Errors: Error {
+        case pairingAlreadyExist
+    }
+
+    private let networkingInteractor: NetworkInteracting
+    private let kms: KeyManagementServiceProtocol
+    private let pairingStorage: WCPairingStorage
+
+    init(networkingInteractor: NetworkInteracting,
+         kms: KeyManagementServiceProtocol,
+         pairingStorage: WCPairingStorage) {
+        self.networkingInteractor = networkingInteractor
+        self.kms = kms
+        self.pairingStorage = pairingStorage
+    }
+
+    func pair(_ uri: WalletConnectURI) async throws {
+        guard !hasPairing(for: uri.topic) else {
+            throw Errors.pairingAlreadyExist
+        }
+        var pairing = WCPairing(uri: uri)
+        try await networkingInteractor.subscribe(topic: pairing.topic)
+        let symKey = try SymmetricKey(hex: uri.symKey)
+        try kms.setSymmetricKey(symKey, for: pairing.topic)
+        pairing.activate()
+        pairingStorage.setPairing(pairing)
+    }
+
+    func hasPairing(for topic: String) -> Bool {
+        return pairingStorage.hasPairing(forTopic: topic)
+    }
+}

Sources/Auth/Types/RelayProtocolOptions.swift

@@ -1,5 +1,3 @@
-//
-
 import Foundation
 import WalletConnectUtils
 

Sources/Auth/Types/RequestParams.swift

@@ -1,5 +1,3 @@
-//     
-
 import Foundation
 
 struct RequestParams {

Sources/Auth/Types/RespondParams.swift

@@ -1,5 +1,3 @@
-//     
-
 import Foundation
 
 struct RespondParams {

Sources/Auth/Types/WalletConnectURI.swift

@@ -1,5 +1,3 @@
-//
-
 import Foundation
 import WalletConnectUtils
 

Sources/WalletConnectKMS/Crypto/Hash.swift

@@ -1,5 +1,3 @@
-//
-
 import Foundation
 import CryptoKit
 

Sources/WalletConnectSign/Engine/Controller/PairEngine.swift

@@ -1,5 +1,6 @@
 import Foundation
 import WalletConnectKMS
+import WalletConnectUtils
 
 actor PairEngine {
     private let networkingInteractor: NetworkInteracting

Sources/WalletConnectSign/Pairing.swift

@@ -1,4 +1,5 @@
 import Foundation
+import WalletConnectUtils
 /**
  A representation of an active pairing connection.
  */

Sources/WalletConnectSign/Sign/SignConfig.swift

@@ -1,5 +1,6 @@
-import WalletConnectRelay
 import Foundation
+import WalletConnectRelay
+import WalletConnectUtils
 
 public extension Sign {
     struct Config {

Sources/WalletConnectSign/Storage/SessionStorage.swift

@@ -1,3 +1,5 @@
+import WalletConnectUtils
+
 protocol WCSessionStorage: AnyObject {
     var onSessionExpiration: ((WCSession) -> Void)? { get set }
     @discardableResult

Sources/WalletConnectSign/Types/Common/Participant.swift

@@ -1,3 +1,5 @@
+import WalletConnectUtils
+
 struct Participant: Codable, Equatable {
     let publicKey: String
     let metadata: AppMetadata

Sources/WalletConnectSign/Types/RelayProtocolOptions.swift

@@ -1,5 +1,3 @@
-//     
-
 import Foundation
 import WalletConnectUtils
 

Sources/WalletConnectSign/Types/WCMethod.swift

@@ -1,3 +1,5 @@
+import WalletConnectUtils
+
 enum WCMethod {
     case wcPairingPing
     case wcSessionPropose(SessionType.ProposeParams)

Sources/WalletConnectSign/Storage/PairingStorage.swift → Sources/WalletConnectUtils/Pairing/PairingStorage.swift

@@ -1,4 +1,4 @@
-protocol WCPairingStorage: AnyObject {
+public protocol WCPairingStorage: AnyObject {
     var onPairingExpiration: ((WCPairing) -> Void)? { get set }
     func hasPairing(forTopic topic: String) -> Bool
     func setPairing(_ pairing: WCPairing)
@@ -8,40 +8,40 @@ protocol WCPairingStorage: AnyObject {
     func deleteAll()
 }
 
-final class PairingStorage: WCPairingStorage {
+public final class PairingStorage: WCPairingStorage {
 
-    var onPairingExpiration: ((WCPairing) -> Void)? {
+    public var onPairingExpiration: ((WCPairing) -> Void)? {
         get { storage.onSequenceExpiration }
         set { storage.onSequenceExpiration = newValue }
     }
 
     private let storage: SequenceStore<WCPairing>
 
-    init(storage: SequenceStore<WCPairing>) {
+    public init(storage: SequenceStore<WCPairing>) {
         self.storage = storage
     }
 
-    func hasPairing(forTopic topic: String) -> Bool {
+    public func hasPairing(forTopic topic: String) -> Bool {
         storage.hasSequence(forTopic: topic)
     }
 
-    func setPairing(_ pairing: WCPairing) {
+    public func setPairing(_ pairing: WCPairing) {
         storage.setSequence(pairing)
     }
 
-    func getPairing(forTopic topic: String) -> WCPairing? {
+    public func getPairing(forTopic topic: String) -> WCPairing? {
         try? storage.getSequence(forTopic: topic)
     }
 
-    func getAll() -> [WCPairing] {
+    public func getAll() -> [WCPairing] {
         storage.getAll()
     }
 
-    func delete(topic: String) {
+    public func delete(topic: String) {
         storage.delete(topic: topic)
     }
 
-    func deleteAll() {
+    public func deleteAll() {
         storage.deleteAll()
     }
 }

Sources/WalletConnectUtils/Pairing/Types/PairingType.swift

@@ -0,0 +1,18 @@
+import Foundation
+
+// Internal namespace for pairing payloads.
+public enum PairingType {
+
+    public struct DeleteParams: Codable, Equatable {
+        let reason: Reason
+    }
+
+    public struct Reason: Codable, Equatable {
+        let code: Int
+        let message: String
+    }
+
+    public struct PingParams: Codable, Equatable {
+        public init() { }
+    }
+}