Dactyloidae iOS initial commit

mobile/ios/Client/Frontend/AuthenticationManager/PasscodeEntryViewController.swift

@@ -0,0 +1,92 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+import Foundation
+import SnapKit
+import Shared
+import SwiftKeychainWrapper
+
+/// Delegate available for PasscodeEntryViewController consumers to be notified of the validation of a passcode.
+@objc protocol PasscodeEntryDelegate: class {
+    func passcodeValidationDidSucceed()
+    @objc optional func userDidCancelValidation()
+}
+
+/// Presented to the to user when asking for their passcode to validate entry into a part of the app.
+class PasscodeEntryViewController: BasePasscodeViewController {
+    weak var delegate: PasscodeEntryDelegate?
+    fileprivate var passcodePane: PasscodePane
+    
+    override init() {
+        let authInfo = KeychainWrapper.sharedAppContainerKeychain.authenticationInfo()
+        passcodePane = PasscodePane(title:nil, passcodeSize:authInfo?.passcode?.count ?? 6)
+        
+        super.init()
+    }
+    
+    required init?(coder aDecoder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        title = AuthenticationStrings.enterPasscodeTitle
+        view.addSubview(passcodePane)
+        passcodePane.snp.makeConstraints { make in
+            make.bottom.left.right.equalTo(self.view)
+            make.top.equalTo(self.topLayoutGuide.snp.bottom)
+        }
+    }
+
+    override func viewWillAppear(_ animated: Bool) {
+        super.viewWillAppear(animated)
+        passcodePane.codeInputView.delegate = self
+
+        // Don't show the keyboard or allow typing if we're locked out. Also display the error.
+        if authenticationInfo?.isLocked() ?? false {
+            displayLockoutError()
+            passcodePane.codeInputView.isUserInteractionEnabled = false
+        } else {
+            passcodePane.codeInputView.becomeFirstResponder()
+        }
+    }
+
+    override func viewDidLayoutSubviews() {
+        super.viewDidLayoutSubviews()
+        
+        if authenticationInfo?.isLocked() ?? false {
+            passcodePane.codeInputView.isUserInteractionEnabled = false
+            passcodePane.codeInputView.resignFirstResponder()
+        } else {
+             passcodePane.codeInputView.becomeFirstResponder()
+        }
+    }
+
+    override func viewWillDisappear(_ animated: Bool) {
+        super.viewWillDisappear(animated)
+        self.view.endEditing(true)
+    }
+
+    override func dismissAnimated() {
+        delegate?.userDidCancelValidation?()
+        super.dismissAnimated()
+    }
+}
+
+extension PasscodeEntryViewController: PasscodeInputViewDelegate {
+    func passcodeInputView(_ inputView: PasscodeInputView, didFinishEnteringCode code: String) {
+        if let passcode = authenticationInfo?.passcode, passcode == code {
+            authenticationInfo?.recordValidation()
+            KeychainWrapper.sharedAppContainerKeychain.setAuthenticationInfo(authenticationInfo)
+            delegate?.passcodeValidationDidSucceed()
+        } else {
+            passcodePane.shakePasscode()
+            failIncorrectPasscode(inputView)
+            passcodePane.codeInputView.resetCode()
+
+            // Store mutations on authentication info object
+            KeychainWrapper.sharedAppContainerKeychain.setAuthenticationInfo(authenticationInfo)
+        }
+    }
+}