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//
// DebugViewModel.swift
// MullvadVPN
//
// Created by Jon Petersson on 2026-02-27.
// Copyright © 2026 Mullvad VPN AB. All rights reserved.
//
import MullvadSettings
import Network
import PacketTunnelCore
import SwiftUI
@MainActor
protocol DebugViewModel: ObservableObject {
typealias Item = (title: String, data: [String])
var tunnelSettings: LatestTunnelSettings { get }
var nwPathStatus: NWPath.Status { get }
var connection: [Item] { get }
var settings: [Item] { get }
}
class DebugViewModelImpl: DebugViewModel {
var tunnelManager: TunnelManager
var nwPathMonitor: NWPathMonitor
var appPreferences: AppPreferencesDataSource
var tunnelObserver: TunnelBlockObserver!
var tunnelSettings: LatestTunnelSettings
var tunnelStatus: TunnelStatus
var nwPathStatus = NWPath.Status.unsatisfied
@Published var connection = [Item]()
@Published var settings = [Item]()
init(
tunnelManager: TunnelManager,
nwPathMonitor: NWPathMonitor,
appPreferences: AppPreferencesDataSource
) {
self.tunnelManager = tunnelManager
self.nwPathMonitor = nwPathMonitor
self.appPreferences = appPreferences
tunnelSettings = tunnelManager.settings
tunnelStatus = tunnelManager.tunnelStatus
refreshData()
tunnelObserver = TunnelBlockObserver(
didUpdateTunnelStatus: { _, status in
self.tunnelStatus = status
self.refreshData()
},
didUpdateDeviceState: { _, _, _ in },
didUpdateTunnelSettings: { _, settings in
self.tunnelSettings = settings
self.refreshData()
}
)
self.tunnelManager.addObserver(tunnelObserver)
}
// Arrange these functions to get the desired section order in the view.
private func refreshData() {
// Connection
setRelays()
setObfuscation()
// Settings
setRelaySettings()
setMultihopSettings()
setDaitaSettings()
setObfuscationSettings()
setQuantumResistanceSettings()
setIncludeAllNetworksSettings()
setMullvadDnsBlockers()
setCustomDnsBlockers()
}
private func update(item: Item, in list: inout [Item]) {
guard let index = (list.firstIndex { $0.title == item.title }) else {
list.append(item)
return
}
list.remove(at: index)
list.insert(item, at: index)
}
}
// MARK: Connection
extension DebugViewModelImpl {
private func setRelays() {
let entry = tunnelStatus.state.relays?.entry?.debugDescription ?? "-"
let exit = tunnelStatus.state.relays?.exit.debugDescription ?? "-"
update(
item: (
title: "Relays",
data: [
"Entry: \(entry)",
"Exit: \(exit)",
]
), in: &connection
)
}
private func setObfuscation() {
update(
item: (
title: "Obfuscation",
data: [
tunnelStatus.observedState.connectionState?.obfuscationMethod.description ?? "-"
]
), in: &connection
)
}
}
// MARK: Settings
extension DebugViewModelImpl {
func setRelaySettings() {
let entry = tunnelSettings.relayConstraints.entryLocations.value?.locations.first?.stringRepresentation ?? "-"
let exit = tunnelSettings.relayConstraints.exitLocations.value?.locations.first?.stringRepresentation ?? "-"
update(
item: (
title: "Relays",
data: [
"Entry: \(entry)",
"Exit: \(exit)",
]
), in: &settings
)
}
func setMullvadDnsBlockers() {
let blockingOptions = tunnelSettings.dnsSettings.blockingOptions
var dnsBlockers = [String]()
if blockingOptions.contains(.blockAdvertising) {
dnsBlockers.append("Advertising (\(DNSBlockingOptions.blockAdvertising.serverAddress!))")
}
if blockingOptions.contains(.blockTracking) {
dnsBlockers.append("Tracking (\(DNSBlockingOptions.blockTracking.serverAddress!))")
}
if blockingOptions.contains(.blockMalware) {
dnsBlockers.append("Malware (\(DNSBlockingOptions.blockMalware.serverAddress!))")
}
if blockingOptions.contains(.blockAdultContent) {
dnsBlockers.append("Adult content (\(DNSBlockingOptions.blockAdultContent.serverAddress!))")
}
if blockingOptions.contains(.blockGambling) {
dnsBlockers.append("Gambling (\(DNSBlockingOptions.blockGambling.serverAddress!))")
}
if blockingOptions.contains(.blockSocialMedia) {
dnsBlockers.append("Social media (\(DNSBlockingOptions.blockSocialMedia.serverAddress!))")
}
update(
item: (
title: "Mullvad DNS blockers",
data: dnsBlockers.isEmpty ? ["-"] : dnsBlockers
), in: &settings
)
}
func setCustomDnsBlockers() {
let customAddresses = tunnelSettings.dnsSettings.customDNSDomains.map { $0.debugDescription }
update(
item: (
title: "Custom DNS blockers",
data: customAddresses.isEmpty ? ["-"] : customAddresses
), in: &settings
)
}
func setObfuscationSettings() {
let method = tunnelSettings.wireGuardObfuscation.state.description
let udpTcpPort = tunnelSettings.wireGuardObfuscation.udpOverTcpPort.description
let shadowSocksPort = tunnelSettings.wireGuardObfuscation.shadowsocksPort.description
update(
item: (
title: "Obfuscation",
data: [
"Method: \(method)",
"UDP over TCP port: \(udpTcpPort)",
"Shadowsocks port: \(shadowSocksPort)",
]
), in: &settings
)
}
func setQuantumResistanceSettings() {
update(
item: (
title: "Quantum resistance",
data: [
tunnelSettings.tunnelQuantumResistance.isEnabled ? "Enabled" : "Disabled"
]
), in: &settings
)
}
func setMultihopSettings() {
update(
item: (
title: "Multihop",
data: [
tunnelSettings.tunnelMultihopState.isEnabled ? "Enabled" : "Disabled"
]
), in: &settings
)
}
func setDaitaSettings() {
let daitaIsEnabled = tunnelSettings.daita.daitaState.isEnabled ? "Enabled" : "Disabled"
let directOnlyIsEnabled = tunnelSettings.daita.directOnlyState.isEnabled ? "Enabled" : "Disabled"
update(
item: (
title: "DAITA",
data: [
"DAITA: \(daitaIsEnabled)",
"Direct only: \(directOnlyIsEnabled)",
]
), in: &settings
)
}
func setIncludeAllNetworksSettings() {
let includeAllNetworksIsEnabled =
tunnelSettings.includeAllNetworks.includeAllNetworksIsEnabled ? "Enabled" : "Disabled"
let localNetworkSharingIsEnabled =
tunnelSettings.includeAllNetworks.localNetworkSharingIsEnabled ? "Enabled" : "Disabled"
let consent = appPreferences.includeAllNetworksConsent ? "True" : "False"
update(
item: (
title: "Force all apps",
data: [
"Force all apps: \(includeAllNetworksIsEnabled)",
"Local network sharing: \(localNetworkSharingIsEnabled)",
"Consent: \(consent)",
]
), in: &settings
)
}
}
// MARK: Mock
class MockDebugViewModel: DebugViewModel {
var tunnelSettings: LatestTunnelSettings = LatestTunnelSettings()
var nwPathStatus: NWPath.Status = NWPath.Status.unsatisfied
// Connection
var connection = [
(
title: "Relays",
data: [
"Entry: Sweden, Gothenburg, se-got-001",
"Exit: Sweden, Gothenburg, se-got-002",
]
),
(title: "Obfuscation", data: [""]),
]
// Settings
var settings = [
(title: "Relays", data: ["Entry: se-se-got-se-got-001", "Exit: se-se-got-se-got-001"]),
(
title: "Mullvad DNS blockers",
data: [
"Advertising (100.64.0.1)",
"Tracking (100.64.0.2)",
"Social Media (100.64.0.3)",
]
),
(title: "Custom DNS blockers", data: ["192.168.1.1", "192.168.1.2"]),
(title: "Obfuscation", data: ["QUIC", "UDP over TCP port: 53", "Shadowsocks port: 53"]),
(title: "Quantum resistance", data: ["Enabled"]),
(title: "Multihop", data: ["Disabled"]),
(title: "DAITA", data: ["DAITA: Enabled", "Direct only: Disabled"]),
(
title: "Force all apps",
data: [
"Force all apps: Disabled",
"Local network sharing: Disabled",
"Consent: False",
]
),
]
}
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