73 lines
3.3 KiB
Swift
73 lines
3.3 KiB
Swift
// SPDX-License-Identifier: MIT
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// Copyright © 2018-2021 WireGuard LLC. All Rights Reserved.
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import Foundation
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class RecentTunnelsTracker {
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private static let keyRecentlyActivatedTunnelNames = "recentlyActivatedTunnelNames"
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private static let maxNumberOfTunnels = 10
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private static var userDefaults: UserDefaults? {
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guard let appGroupId = FileManager.appGroupId else {
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wg_log(.error, staticMessage: "Cannot obtain app group ID from bundle for tracking recently used tunnels")
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return nil
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}
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guard let userDefaults = UserDefaults(suiteName: appGroupId) else {
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wg_log(.error, staticMessage: "Cannot obtain shared user defaults for tracking recently used tunnels")
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return nil
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}
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return userDefaults
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}
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static func handleTunnelActivated(tunnelName: String) {
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guard let userDefaults = RecentTunnelsTracker.userDefaults else { return }
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var recentTunnels = userDefaults.stringArray(forKey: keyRecentlyActivatedTunnelNames) ?? []
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if let existingIndex = recentTunnels.firstIndex(of: tunnelName) {
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recentTunnels.remove(at: existingIndex)
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}
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recentTunnels.insert(tunnelName, at: 0)
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if recentTunnels.count > maxNumberOfTunnels {
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recentTunnels.removeLast(recentTunnels.count - maxNumberOfTunnels)
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}
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userDefaults.set(recentTunnels, forKey: keyRecentlyActivatedTunnelNames)
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}
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static func handleTunnelRemoved(tunnelName: String) {
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guard let userDefaults = RecentTunnelsTracker.userDefaults else { return }
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var recentTunnels = userDefaults.stringArray(forKey: keyRecentlyActivatedTunnelNames) ?? []
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if let existingIndex = recentTunnels.firstIndex(of: tunnelName) {
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recentTunnels.remove(at: existingIndex)
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userDefaults.set(recentTunnels, forKey: keyRecentlyActivatedTunnelNames)
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}
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}
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static func handleTunnelRenamed(oldName: String, newName: String) {
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guard let userDefaults = RecentTunnelsTracker.userDefaults else { return }
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var recentTunnels = userDefaults.stringArray(forKey: keyRecentlyActivatedTunnelNames) ?? []
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if let existingIndex = recentTunnels.firstIndex(of: oldName) {
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recentTunnels[existingIndex] = newName
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userDefaults.set(recentTunnels, forKey: keyRecentlyActivatedTunnelNames)
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}
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}
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static func cleanupTunnels(except tunnelNamesToKeep: Set<String>) {
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guard let userDefaults = RecentTunnelsTracker.userDefaults else { return }
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var recentTunnels = userDefaults.stringArray(forKey: keyRecentlyActivatedTunnelNames) ?? []
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let oldCount = recentTunnels.count
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recentTunnels.removeAll { !tunnelNamesToKeep.contains($0) }
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if oldCount != recentTunnels.count {
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userDefaults.set(recentTunnels, forKey: keyRecentlyActivatedTunnelNames)
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}
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}
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static func recentlyActivatedTunnelNames(limit: Int) -> [String] {
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guard let userDefaults = RecentTunnelsTracker.userDefaults else { return [] }
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var recentTunnels = userDefaults.stringArray(forKey: keyRecentlyActivatedTunnelNames) ?? []
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if limit < recentTunnels.count {
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recentTunnels.removeLast(recentTunnels.count - limit)
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}
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return recentTunnels
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}
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}
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