72 lines
2.5 KiB
Swift
72 lines
2.5 KiB
Swift
//
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// Copyright 2020-2024 New Vector Ltd.
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//
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// SPDX-License-Identifier: AGPL-3.0-only
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// Please see LICENSE in the repository root for full details.
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//
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import Foundation
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import AuthenticationServices
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/// Provides context to target where in an application's UI the authorization view should be shown.
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class SSOAuthenticationSessionContextProvider: NSObject, SSOAuthenticationSessionContextProviding, ASWebAuthenticationPresentationContextProviding {
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let window: UIWindow
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init(window: UIWindow) {
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self.window = window
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}
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func presentationAnchor(for session: ASWebAuthenticationSession) -> ASPresentationAnchor {
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return window
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}
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}
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/// SSOAuthentificationSession is session used to authenticate a user through a web service on iOS 12+. It uses ASWebAuthenticationSession.
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/// More information: https://developer.apple.com/documentation/authenticationservices/authenticating_a_user_through_a_web_service
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final class SSOAuthentificationSession: SSOAuthentificationSessionProtocol {
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// MARK: - Constants
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// MARK: - Properties
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private var authentificationSession: ASWebAuthenticationSession?
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private var contextProvider: SSOAuthenticationSessionContextProviding?
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// MARK: - Public
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func setContextProvider(_ contextProvider: SSOAuthenticationSessionContextProviding) {
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self.contextProvider = contextProvider
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}
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func authenticate(with url: URL, callbackURLScheme: String?, completionHandler: @escaping SSOAuthenticationSessionCompletionHandler) {
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let authentificationSession = ASWebAuthenticationSession(url: url, callbackURLScheme: callbackURLScheme) { (callbackURL, error) in
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var finalError: Error?
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if let error = error as? ASWebAuthenticationSessionError {
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switch error.code {
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case .canceledLogin:
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finalError = SSOAuthentificationSessionError.userCanceled
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default:
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finalError = error
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}
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}
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completionHandler(callbackURL, finalError)
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}
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self.authentificationSession = authentificationSession
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if let asWebContextProvider = contextProvider as? ASWebAuthenticationPresentationContextProviding {
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authentificationSession.presentationContextProvider = asWebContextProvider
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}
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authentificationSession.start()
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}
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func cancel() {
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self.authentificationSession?.cancel()
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}
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}
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