passepartout-apple/Library/Sources/AppUIMain/Views/Modules/OpenVPNView+Import.swift

123 lines
4.1 KiB
Swift

//
// OpenVPNView+Import.swift
// Passepartout
//
// Created by Davide De Rosa on 12/8/24.
// Copyright (c) 2024 Davide De Rosa. All rights reserved.
//
// https://github.com/passepartoutvpn
//
// This file is part of Passepartout.
//
// Passepartout is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Passepartout is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Passepartout. If not, see <http://www.gnu.org/licenses/>.
//
import CommonLibrary
import CommonUtils
import PassepartoutKit
import SwiftUI
extension OpenVPNView {
struct ImportModifier: ViewModifier {
@Binding
var draft: OpenVPNModule.Builder
let impl: OpenVPNModule.Implementation?
@Binding
var isImporting: Bool
@ObservedObject
var errorHandler: ErrorHandler
@State
private var importURL: URL?
@State
private var importPassphrase: String?
@State
private var requiresPassphrase = false
func body(content: Content) -> some View {
content
.fileImporter(
isPresented: $isImporting,
allowedContentTypes: [.item],
onCompletion: importConfiguration
)
.alert(
draft.moduleType.localizedDescription,
isPresented: $requiresPassphrase,
presenting: importURL,
actions: { url in
SecureField(
Strings.Placeholders.secret,
text: $importPassphrase ?? ""
)
Button(Strings.Alerts.Import.Passphrase.ok) {
importConfiguration(from: .success(url))
}
Button(Strings.Global.Actions.cancel, role: .cancel) {
isImporting = false
}
},
message: {
Text(Strings.Alerts.Import.Passphrase.message($0.lastPathComponent))
}
)
}
}
}
private extension OpenVPNView.ImportModifier {
func importConfiguration(from result: Result<URL, Error>) {
do {
let url = try result.get()
guard url.startAccessingSecurityScopedResource() else {
throw AppError.permissionDenied
}
defer {
url.stopAccessingSecurityScopedResource()
}
importURL = url
guard let impl else {
fatalError("Requires OpenVPNModule implementation")
}
guard let parser = impl.importer as? StandardOpenVPNParser else {
fatalError("OpenVPNModule importer should be StandardOpenVPNParser")
}
let parsed = try parser.parsed(fromURL: url, passphrase: importPassphrase)
draft.configurationBuilder = parsed.configuration.builder()
} catch StandardOpenVPNParserError.encryptionPassphrase,
StandardOpenVPNParserError.unableToDecrypt {
Task {
// XXX: re-present same alert after artificial delay
try? await Task.sleep(for: .milliseconds(500))
importPassphrase = nil
requiresPassphrase = true
}
} catch {
pp_log(.app, .error, "Unable to import OpenVPN configuration: \(error)")
errorHandler.handle(
(error as? StandardOpenVPNParserError)?.asPassepartoutError ?? error,
title: draft.moduleType.localizedDescription
)
}
}
}