//
// NCManageE2EE.swift
// Nextcloud
//
// Created by Marino Faggiana on 17/11/22.
// Copyright © 2022 Marino Faggiana. All rights reserved.
//
// Author Marino Faggiana <marino.faggiana@nextcloud.com>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
import SwiftUI
import NextcloudKit
import TOPasscodeViewController
import LocalAuthentication
@objc class NCManageE2EEInterface: NSObject {
@objc func makeShipDetailsUI(account: String) -> UIViewController {
let account = (UIApplication.shared.delegate as! AppDelegate).account
let details = NCViewE2EE(account: account)
let vc = UIHostingController(rootView: details)
vc.title = NSLocalizedString("_e2e_settings_", comment: "")
return vc
}
}
class NCManageE2EE: NSObject, ObservableObject, NCEndToEndInitializeDelegate, TOPasscodeViewControllerDelegate {
let endToEndInitialize = NCEndToEndInitialize()
let appDelegate = UIApplication.shared.delegate as! AppDelegate
var passcodeType = ""
@Published var isEndToEndEnabled: Bool = false
@Published var statusOfService: String = NSLocalizedString("_status_in_progress_", comment: "")
override init() {
super.init()
endToEndInitialize.delegate = self
isEndToEndEnabled = CCUtility.isEnd(toEndEnabled: appDelegate.account)
if isEndToEndEnabled {
statusOfService = NSLocalizedString("_status_e2ee_configured_", comment: "")
} else {
endToEndInitialize.statusOfService { error in
if error == .success {
self.statusOfService = NSLocalizedString("_status_e2ee_on_server_", comment: "")
} else {
self.statusOfService = NSLocalizedString("_status_e2ee_not_setup_", comment: "")
}
}
}
}
// MARK: - Delegate
func endToEndInitializeSuccess() {
isEndToEndEnabled = true
}
// MARK: - Passcode
@objc func requestPasscodeType(_ passcodeType: String) {
let laContext = LAContext()
var error: NSError?
let passcodeViewController = TOPasscodeViewController(passcodeType: .sixDigits, allowCancel: true)
passcodeViewController.delegate = self
passcodeViewController.keypadButtonShowLettering = false
if CCUtility.getEnableTouchFaceID() && laContext.canEvaluatePolicy(.deviceOwnerAuthenticationWithBiometrics, error: &error) {
if error == nil {
if laContext.biometryType == .faceID {
passcodeViewController.biometryType = .faceID
passcodeViewController.allowBiometricValidation = true
} else if laContext.biometryType == .touchID {
passcodeViewController.biometryType = .touchID
}
passcodeViewController.allowBiometricValidation = true
passcodeViewController.automaticallyPromptForBiometricValidation = true
}
}
self.passcodeType = passcodeType
appDelegate.window?.rootViewController?.present(passcodeViewController, animated: true)
}
@objc func correctPasscode() {
switch self.passcodeType {
case "startE2E":
endToEndInitialize.initEndToEndEncryption()
case "readPassphrase":
if let e2ePassphrase = CCUtility.getEndToEndPassphrase(appDelegate.account) {
print("[LOG]Passphrase: " + e2ePassphrase)
let message = "\n" + NSLocalizedString("_e2e_settings_the_passphrase_is_", comment: "") + "\n\n\n" + e2ePassphrase
let alertController = UIAlertController(title: NSLocalizedString("_info_", comment: ""), message: message, preferredStyle: .alert)
alertController.addAction(UIAlertAction(title: NSLocalizedString("_ok_", comment: ""), style: .default, handler: { action in }))
alertController.addAction(UIAlertAction(title: NSLocalizedString("_copy_passphrase_", comment: ""), style: .default, handler: { action in
UIPasteboard.general.string = e2ePassphrase
}))
appDelegate.window?.rootViewController?.present(alertController, animated: true)
}
case "removeLocallyEncryption":
let alertController = UIAlertController(title: NSLocalizedString("_e2e_settings_remove_", comment: ""), message: NSLocalizedString("_e2e_settings_remove_message_", comment: ""), preferredStyle: .alert)
alertController.addAction(UIAlertAction(title: NSLocalizedString("_remove_", comment: ""), style: .default, handler: { action in
CCUtility.clearAllKeysEnd(toEnd: self.appDelegate.account)
self.isEndToEndEnabled = CCUtility.isEnd(toEndEnabled: self.appDelegate.account)
}))
alertController.addAction(UIAlertAction(title: NSLocalizedString("_cancel_", comment: ""), style: .default, handler: { action in }))
appDelegate.window?.rootViewController?.present(alertController, animated: true)
default:
break
}
}
func passcodeViewController(_ passcodeViewController: TOPasscodeViewController, isCorrectCode code: String) -> Bool {
if code == CCUtility.getPasscode() {
DispatchQueue.main.asyncAfter(deadline: .now() + 0.3) {
self.correctPasscode()
}
return true
} else {
return false
}
}
func didPerformBiometricValidationRequest(in passcodeViewController: TOPasscodeViewController) {
LAContext().evaluatePolicy(.deviceOwnerAuthenticationWithBiometrics, localizedReason: NCBrandOptions.shared.brand) { (success, error) in
if success {
DispatchQueue.main.asyncAfter(deadline: .now() + 0.3) {
passcodeViewController.dismiss(animated: true)
self.correctPasscode()
}
}
}
}
func didTapCancel(in passcodeViewController: TOPasscodeViewController) {
passcodeViewController.dismiss(animated: true)
}
}
// MARK: Views
struct NCViewE2EE: View {
@ObservedObject var manageE2EE = NCManageE2EE()
@State var account: String = ""
var body: some View {
VStack {
if manageE2EE.isEndToEndEnabled {
List {
Section(header: Text(""), footer: Text(manageE2EE.statusOfService + "\n\n" + "End-to-End Encryption " + NCGlobal.shared.capabilityE2EEApiVersion)) {
Label {
Text(NSLocalizedString("_e2e_settings_activated_", comment: ""))
} icon: {
Image(systemName: "checkmark.circle.fill")
.resizable()
.scaledToFit()
.foregroundColor(.green)
}
}
HStack {
Label {
Text(NSLocalizedString("_e2e_settings_read_passphrase_", comment: ""))
} icon: {
Image(systemName: "eye")
.resizable()
.scaledToFit()
.foregroundColor(Color(UIColor.systemGray))
}
Spacer()
}
.contentShape(Rectangle())
.onTapGesture {
if let passcode = CCUtility.getPasscode(), !passcode.isEmpty {
manageE2EE.requestPasscodeType("readPassphrase")
} else {
NCContentPresenter.shared.showInfo(error: NKError(errorCode: 0, errorDescription: "_e2e_settings_lock_not_active_"))
}
}
HStack {
Label {
Text(NSLocalizedString("_e2e_settings_remove_", comment: ""))
} icon: {
Image(systemName: "trash.circle")
.resizable()
.scaledToFit()
.foregroundColor(Color.red)
}
Spacer()
}
.contentShape(Rectangle())
.onTapGesture {
if let passcode = CCUtility.getPasscode(), !passcode.isEmpty {
manageE2EE.requestPasscodeType("removeLocallyEncryption")
} else {
NCContentPresenter.shared.showInfo(error: NKError(errorCode: 0, errorDescription: "_e2e_settings_lock_not_active_"))
}
}
#if DEBUG
DeleteCerificateSection()
#endif
}
} else {
List {
Section(header: Text(""), footer:Text(manageE2EE.statusOfService + "\n\n" + "End-to-End Encryption " + NCGlobal.shared.capabilityE2EEApiVersion)) {
HStack {
Label {
Text(NSLocalizedString("_e2e_settings_start_", comment: ""))
} icon: {
Image(systemName: "play.circle")
.resizable()
.scaledToFit()
.foregroundColor(.green)
}
Spacer()
}
.contentShape(Rectangle())
.onTapGesture {
if let passcode = CCUtility.getPasscode(), !passcode.isEmpty {
manageE2EE.requestPasscodeType("startE2E")
} else {
NCContentPresenter.shared.showInfo(error: NKError(errorCode: 0, errorDescription: "_e2e_settings_lock_not_active_"))
}
}
}
#if DEBUG
DeleteCerificateSection()
#endif
}
}
}
.background(Color(UIColor.systemGroupedBackground))
}
}
struct DeleteCerificateSection: View {
var body: some View {
Section(header: Text("Delete Server keys"), footer: Text("Available only in debug mode")) {
HStack {
Label {
Text("Delete Certificate")
} icon: {
Image(systemName: "exclamationmark.triangle")
.resizable()
.scaledToFit()
.foregroundColor(Color(UIColor.systemGray))
}
Spacer()
}
.contentShape(Rectangle())
.onTapGesture {
NextcloudKit.shared.deleteE2EECertificate { account, error in
if error == .success {
NCContentPresenter.shared.messageNotification("E2E delete certificate", error: error, delay: NCGlobal.shared.dismissAfterSecond, type: .success)
} else {
NCContentPresenter.shared.messageNotification("E2E delete certificate", error: error, delay: NCGlobal.shared.dismissAfterSecond, type: .error)
}
}
}
HStack {
Label {
Text("Delete PrivateKey")
} icon: {
Image(systemName: "exclamationmark.triangle")
.resizable()
.scaledToFit()
.foregroundColor(Color(UIColor.systemGray))
}
Spacer()
}
.contentShape(Rectangle())
.onTapGesture {
NextcloudKit.shared.deleteE2EEPrivateKey { account, error in
if error == .success {
NCContentPresenter.shared.messageNotification("E2E delete privateKey", error: error, delay: NCGlobal.shared.dismissAfterSecond, type: .success)
} else {
NCContentPresenter.shared.messageNotification("E2E delete privateKey", error: error, delay: NCGlobal.shared.dismissAfterSecond, type: .error)
}
}
}
}
}
}
// MARK: - Preview / Test
struct SectionView: View {
@State var height: CGFloat = 0
@State var text: String = ""
var body: some View {
HStack {
Text(text)
}
.frame(maxWidth: .infinity, minHeight: height, alignment: .bottomLeading)
}
}
struct NCViewE2EETest: View {
var body: some View {
VStack {
List {
Section(header:SectionView(height: 50, text: "Section Header View")) {
Label {
Text(NSLocalizedString("_e2e_settings_activated_", comment: ""))
} icon: {
Image(systemName: "checkmark.circle.fill")
.resizable()
.scaledToFit()
.frame(width: 25, height: 25)
.foregroundColor(.green)
}
}
Section(header:SectionView(text: "Section Header View 42")) {
Label {
Text(NSLocalizedString("_e2e_settings_activated_", comment: ""))
} icon: {
Image(systemName: "checkmark.circle.fill")
.resizable()
.scaledToFit()
.frame(width: 25, height: 25)
.foregroundColor(.red)
}
}
}
}
}
}
struct NCViewE2EE_Previews: PreviewProvider {
static var previews: some View {
let account = (UIApplication.shared.delegate as! AppDelegate).account
NCViewE2EE(account: account)
}
}