104 lines
3.9 KiB
Swift
104 lines
3.9 KiB
Swift
//
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// Copyright (c) 2019 Open Whisper Systems. All rights reserved.
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//
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import Foundation
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import SignalUtilitiesKit
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let CompareSafetyNumbersActivityType = "org.whispersystems.signal.activity.CompareSafetyNumbers"
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@objc(OWSCompareSafetyNumbersActivityDelegate)
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protocol CompareSafetyNumbersActivityDelegate {
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func compareSafetyNumbersActivitySucceeded(activity: CompareSafetyNumbersActivity)
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func compareSafetyNumbersActivity(_ activity: CompareSafetyNumbersActivity, failedWithError error: Error)
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}
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@objc (OWSCompareSafetyNumbersActivity)
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class CompareSafetyNumbersActivity: UIActivity {
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var mySafetyNumbers: String?
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let delegate: CompareSafetyNumbersActivityDelegate
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@objc
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required init(delegate: CompareSafetyNumbersActivityDelegate) {
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self.delegate = delegate
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super.init()
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}
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// MARK: UIActivity
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override class var activityCategory: UIActivity.Category {
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get { return .action }
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}
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override var activityType: UIActivity.ActivityType? {
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get { return UIActivity.ActivityType(rawValue: CompareSafetyNumbersActivityType) }
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}
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override var activityTitle: String? {
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get {
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return NSLocalizedString("COMPARE_SAFETY_NUMBER_ACTION", comment: "Activity Sheet label")
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}
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}
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override var activityImage: UIImage? {
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get {
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return #imageLiteral(resourceName: "ic_lock_outline")
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}
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}
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override func canPerform(withActivityItems activityItems: [Any]) -> Bool {
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return stringsFrom(activityItems: activityItems).count > 0
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}
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override func prepare(withActivityItems activityItems: [Any]) {
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let myFormattedSafetyNumbers = stringsFrom(activityItems: activityItems).first
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mySafetyNumbers = numericOnly(string: myFormattedSafetyNumbers)
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}
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override func perform() {
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defer { activityDidFinish(true) }
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let pasteboardString = numericOnly(string: UIPasteboard.general.string)
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guard (pasteboardString != nil && pasteboardString!.count == 60) else {
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Logger.warn("no valid safety numbers found in pasteboard: \(String(describing: pasteboardString))")
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let error = OWSErrorWithCodeDescription(OWSErrorCode.userError,
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NSLocalizedString("PRIVACY_VERIFICATION_FAILED_NO_SAFETY_NUMBERS_IN_CLIPBOARD", comment: "Alert body for user error"))
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delegate.compareSafetyNumbersActivity(self, failedWithError: error)
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return
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}
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let pasteboardSafetyNumbers = pasteboardString!
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if pasteboardSafetyNumbers == mySafetyNumbers {
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Logger.info("successfully matched safety numbers. local numbers: \(String(describing: mySafetyNumbers)) pasteboard:\(pasteboardSafetyNumbers)")
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delegate.compareSafetyNumbersActivitySucceeded(activity: self)
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} else {
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Logger.warn("local numbers: \(String(describing: mySafetyNumbers)) didn't match pasteboard:\(pasteboardSafetyNumbers)")
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let error = OWSErrorWithCodeDescription(OWSErrorCode.privacyVerificationFailure,
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NSLocalizedString("PRIVACY_VERIFICATION_FAILED_MISMATCHED_SAFETY_NUMBERS_IN_CLIPBOARD", comment: "Alert body"))
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delegate.compareSafetyNumbersActivity(self, failedWithError: error)
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}
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}
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// MARK: Helpers
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func numericOnly(string: String?) -> String? {
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guard let string = string else {
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return nil
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}
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var numericOnly: String?
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if let regex = try? NSRegularExpression(pattern: "\\D", options: .caseInsensitive) {
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numericOnly = regex.stringByReplacingMatches(in: string, options: .withTransparentBounds, range: NSRange(location: 0, length: string.utf16.count), withTemplate: "")
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}
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return numericOnly
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}
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func stringsFrom(activityItems: [Any]) -> [String] {
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return activityItems.map { $0 as? String }.filter { $0 != nil }.map { $0! }
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}
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}
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