session-ios/Signal/src/ViewControllers/SafetyNumberConfirmationAlert.swift
2017-11-02 16:05:41 -04:00

96 lines
4.9 KiB
Swift

//
// Copyright (c) 2017 Open Whisper Systems. All rights reserved.
//
import Foundation
class SafetyNumberConfirmationAlert: NSObject {
let TAG = "[SafetyNumberConfirmationAlert]"
private let contactsManager: OWSContactsManager
private let storageManager: TSStorageManager
init(contactsManager: OWSContactsManager) {
self.contactsManager = contactsManager
self.storageManager = TSStorageManager.shared()
}
public class func presentAlertIfNecessary(recipientId: String, confirmationText: String, contactsManager: OWSContactsManager, completion: @escaping (Bool) -> Void) -> Bool {
return self.presentAlertIfNecessary(recipientIds: [recipientId], confirmationText: confirmationText, contactsManager: contactsManager, completion: completion)
}
public class func presentAlertIfNecessary(recipientIds: [String], confirmationText: String, contactsManager: OWSContactsManager, completion: @escaping (Bool) -> Void) -> Bool {
return SafetyNumberConfirmationAlert(contactsManager: contactsManager).presentIfNecessary(recipientIds: recipientIds,
confirmationText: confirmationText,
completion: completion)
}
/**
* Shows confirmation dialog if at least one of the recipient id's is not confirmed.
*
* @returns true if an alert was shown
* false if there were no unconfirmed identities
*/
public func presentIfNecessary(recipientIds: [String], confirmationText: String, completion: @escaping (Bool) -> Void) -> Bool {
guard let untrustedIdentity = untrustedIdentityForSending(recipientIds: recipientIds) else {
// No identities to confirm, no alert to present.
return false
}
let displayName = contactsManager.displayName(forPhoneIdentifier: untrustedIdentity.recipientId)
let titleFormat = NSLocalizedString("CONFIRM_SENDING_TO_CHANGED_IDENTITY_TITLE_FORMAT",
comment: "Action sheet title presented when a users's SN have recently changed. Embeds {{contact's name or phone number}}")
let title = String(format: titleFormat, displayName)
let bodyFormat = NSLocalizedString("CONFIRM_SENDING_TO_CHANGED_IDENTITY_BODY_FORMAT",
comment: "Action sheet body presented when a user's SN have recently changed. Embeds {{contact's name or phone nubmer}}")
let body = String(format: bodyFormat, displayName)
let actionSheetController = UIAlertController(title: title, message:body, preferredStyle: .actionSheet)
let confirmAction = UIAlertAction(title: confirmationText, style: .default) { _ in
Logger.info("\(self.TAG) Confirmed identity: \(untrustedIdentity)")
OWSDispatch.sessionStoreQueue().async {
OWSIdentityManager.shared().setVerificationState(.default, identityKey: untrustedIdentity.identityKey, recipientId: untrustedIdentity.recipientId, isUserInitiatedChange: true)
DispatchQueue.main.async {
completion(true)
}
}
}
actionSheetController.addAction(confirmAction)
let showSafetyNumberAction = UIAlertAction(title: NSLocalizedString("VERIFY_PRIVACY", comment: "Label for button or row which allows users to verify the safety number of another user."), style: .default) { _ in
Logger.info("\(self.TAG) Opted to show Safety Number for identity: \(untrustedIdentity)")
self.presentSafetyNumberViewController(theirIdentityKey: untrustedIdentity.identityKey,
theirRecipientId: untrustedIdentity.recipientId,
theirDisplayName: displayName,
completion: { completion(false) })
}
actionSheetController.addAction(showSafetyNumberAction)
actionSheetController.addAction(OWSAlerts.cancelAction)
UIApplication.shared.frontmostViewController?.present(actionSheetController, animated: true)
return true
}
public func presentSafetyNumberViewController(theirIdentityKey: Data, theirRecipientId: String, theirDisplayName: String, completion: (() -> Void)? = nil) {
guard let fromViewController = UIApplication.shared.frontmostViewController else {
Logger.info("\(self.TAG) Missing frontmostViewController")
return
}
FingerprintViewController.present(from:fromViewController, recipientId:theirRecipientId)
}
private func untrustedIdentityForSending(recipientIds: [String]) -> OWSRecipientIdentity? {
return recipientIds.flatMap {
OWSIdentityManager.shared().untrustedIdentityForSending(toRecipientId: $0)
}.first
}
}