Show tunnel failure reason in VPN status

Passepartout-iOS/Global/Theme+Cells.swift

@@ -24,6 +24,7 @@
 //
 
 import UIKit
+import TunnelKit
 
 extension UITableViewCell {
     func applyChecked(_ checked: Bool, _ theme: Theme) {
@@ -66,7 +67,7 @@ extension SettingTableViewCell {
         accessoryType = .none
     }
     
-    func applyVPN(_ theme: Theme, with vpnStatus: VPNStatus?) {
+    func applyVPN(_ theme: Theme, with vpnStatus: VPNStatus?, error: TunnelKitProvider.ProviderError?) {
         leftTextColor = theme.palette.colorPrimaryText
         guard let vpnStatus = vpnStatus else {
             rightText = L10n.Vpn.disabled
@@ -83,13 +84,41 @@ extension SettingTableViewCell {
             rightText = L10n.Vpn.active
             rightTextColor = theme.palette.colorOn
             
+        case .disconnecting, .disconnected:
+            var disconnectionReason: String?
+            if let error = error {
+                switch error {
+                case .socketActivity, .timeout:
+                    disconnectionReason = L10n.Vpn.Errors.timeout
+                    
+                case .dnsFailure:
+                    disconnectionReason = L10n.Vpn.Errors.dns
+                    
+                case .tlsFailed:
+                    disconnectionReason = L10n.Vpn.Errors.tls
+                    
+                case .authenticationFailed:
+                    disconnectionReason = L10n.Vpn.Errors.auth
+                    
+                case .networkChanged:
+                    disconnectionReason = L10n.Vpn.Errors.network
+                    
+                default:
+                    break
+                }
+            }
+            switch vpnStatus {
             case .disconnecting:
-            rightText = L10n.Vpn.disconnecting
+                rightText = disconnectionReason ?? L10n.Vpn.disconnecting
                 rightTextColor = theme.palette.colorIndeterminate
                 
             case .disconnected:
-            rightText = L10n.Vpn.inactive
+                rightText = disconnectionReason ?? L10n.Vpn.inactive
                 rightTextColor = theme.palette.colorOff
+                
+            default:
+                break
+            }
         }
     }
 }

Passepartout-iOS/Scenes/ServiceViewController.swift

@@ -529,7 +529,7 @@ extension ServiceViewController: UITableViewDataSource, UITableViewDelegate, Tog
             }
             
             let cell = Cells.setting.dequeue(from: tableView, for: indexPath)
-            cell.applyVPN(Theme.current, with: vpn.isEnabled ? vpn.status : nil)
+            cell.applyVPN(Theme.current, with: vpn.isEnabled ? vpn.status : nil, error: service.vpnLastError)
             cell.leftText = L10n.Service.Cells.ConnectionStatus.caption
             cell.accessoryType = .none
             cell.isTappable = false

Passepartout/Resources/en.lproj/Localizable.strings

@@ -161,6 +161,12 @@
 "vpn.inactive" = "Inactive";
 "vpn.disabled" = "Disabled";
 
+"vpn.errors.timeout" = "Timeout";
+"vpn.errors.auth" = "Auth failed";
+"vpn.errors.tls" = "TLS failed";
+"vpn.errors.dns" = "DNS failed";
+"vpn.errors.network" = "Network changed";
+
 "issue_reporter.title" = "Submit debug log";
 "issue_reporter.message" = "The debug log of your latest connections is crucial to resolve your connectivity issues and is completely anonymous.";
 "issue_reporter.buttons.accept" = "I understand";

Passepartout/Sources/AppConstants.swift

@@ -47,6 +47,7 @@ class AppConstants {
 //            builder.debugLogFormat = "$DHH:mm:ss$d $N.$F:$l - $M"
             builder.debugLogFormat = Log.debugFormat
             builder.debugLogKey = "LastVPNLog"
+            builder.lastErrorKey = "LastVPNError"
             return builder.build()
         }
         

Passepartout/Sources/Model/ConnectionService.swift

@@ -276,6 +276,16 @@ class ConnectionService: Codable {
         return lines.joined(separator: "\n")
     }
     
+    var vpnLastError: TunnelKitProvider.ProviderError? {
+        guard let key = tunnelConfiguration.lastErrorKey else {
+            return nil
+        }
+        guard let rawValue = defaults.string(forKey: key) else {
+            return nil
+        }
+        return TunnelKitProvider.ProviderError(rawValue: rawValue)
+    }
+    
 //    func eraseVpnLog() {
 //        defaults.removeObject(forKey: Keys.vpnLog)
 //    }

Passepartout/Sources/Model/Profiles/HostConnectionProfile.swift

@@ -60,6 +60,7 @@ class HostConnectionProfile: ConnectionProfile, Codable, Equatable {
         builder.shouldDebug = configuration.shouldDebug
         builder.debugLogFormat = configuration.debugLogFormat
         builder.debugLogKey = configuration.debugLogKey
+        builder.lastErrorKey = configuration.lastErrorKey
 
         return builder.build()
     }

Passepartout/Sources/Model/Profiles/ProviderConnectionProfile.swift

@@ -121,6 +121,7 @@ class ProviderConnectionProfile: ConnectionProfile, Codable, Equatable {
         builder.shouldDebug = configuration.shouldDebug
         builder.debugLogFormat = configuration.debugLogFormat
         builder.debugLogKey = configuration.debugLogKey
+        builder.lastErrorKey = configuration.lastErrorKey
 
         if let address = manualAddress {
             builder.prefersResolvedAddresses = true

Passepartout/Sources/SwiftGen+Strings.swift

@@ -686,6 +686,19 @@ internal enum L10n {
     internal static let disconnecting = L10n.tr("Localizable", "vpn.disconnecting")
     /// Inactive
     internal static let inactive = L10n.tr("Localizable", "vpn.inactive")
+
+    internal enum Errors {
+      /// Auth failed
+      internal static let auth = L10n.tr("Localizable", "vpn.errors.auth")
+      /// DNS failed
+      internal static let dns = L10n.tr("Localizable", "vpn.errors.dns")
+      /// Network changed
+      internal static let network = L10n.tr("Localizable", "vpn.errors.network")
+      /// Timeout
+      internal static let timeout = L10n.tr("Localizable", "vpn.errors.timeout")
+      /// TLS failed
+      internal static let tls = L10n.tr("Localizable", "vpn.errors.tls")
+    }
   }
 
   internal enum Wizards {