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UTMRemoteConnectView.swift
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UTMRemoteConnectView.swift
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//
// Copyright © 2023 osy. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
import SwiftUI
private let kTimeoutSeconds: UInt64 = 15
struct UTMRemoteConnectView: View {
@ObservedObject var remoteClientState: UTMRemoteClient.State
@Environment(\.openURL) private var openURL
@EnvironmentObject private var data: UTMRemoteData
@State private var selectedServer: UTMRemoteClient.State.SavedServer?
@State private var isAutoConnect: Bool = false
private var remoteClient: UTMRemoteClient {
data.remoteClient
}
var body: some View {
VStack {
HStack {
ProgressView().progressViewStyle(.circular)
Spacer()
Text("Select a UTM Server")
.font(.headline)
Spacer()
Button {
openURL(URL(string: "https://docs.getutm.app/remote/")!)
} label: {
Label("Help", systemImage: "questionmark.circle")
.labelStyle(.iconOnly)
.font(.title2)
}
Button {
selectedServer = .init()
} label: {
Label("New Connection", systemImage: "plus")
.labelStyle(.iconOnly)
.font(.title2)
}
}.padding()
List {
if remoteClientState.savedServers.count > 0 {
Section(header: Text("Saved")) {
ForEach(remoteClientState.savedServers) { server in
Button {
isAutoConnect = true
selectedServer = server
} label: {
MacDeviceLabel(server.name.isEmpty ? server.hostname : server.name, device: .init(model: server.model))
}.disabled(!server.isAvailable)
.contextMenu {
Button {
isAutoConnect = false
selectedServer = server
} label: {
Label("Edit…", systemImage: "slider.horizontal.3")
}
DestructiveButton("Delete") {
remoteClientState.delete(server: server)
Task {
await remoteClient.refresh()
}
}
}
}.onDelete { indexSet in
remoteClientState.savedServers.remove(atOffsets: indexSet)
Task {
await remoteClient.refresh()
}
}
}
}
Section(header: Text("Discovered"), footer: helpText) {
ForEach(remoteClientState.foundServers) { server in
Button {
isAutoConnect = true
selectedServer = UTMRemoteClient.State.SavedServer(from: server)
} label: {
MacDeviceLabel(server.name, device: .init(model: server.model))
}
}
}
}.listStyle(.insetGrouped)
}.alert(item: $remoteClientState.alertMessage) { item in
Alert(title: Text(item.message))
}
.sheet(item: $selectedServer) { server in
ServerConnectView(remoteClientState: remoteClientState, server: server, isAutoConnect: $isAutoConnect)
}
.onAppear {
Task {
await remoteClient.startScanning()
}
}
.onDisappear {
Task {
await remoteClient.stopScanning()
}
}
}
@ViewBuilder
private var helpText: some View {
if remoteClientState.foundServers.isEmpty {
Text("Make sure the latest version of UTM is running on your Mac and UTM Server is enabled. You can download UTM from the Mac App Store.")
}
}
}
private struct ServerConnectView: View {
@ObservedObject var remoteClientState: UTMRemoteClient.State
@State var server: UTMRemoteClient.State.SavedServer
@Binding var isAutoConnect: Bool
@EnvironmentObject private var data: UTMRemoteData
@Environment(\.presentationMode) private var presentationMode: Binding<PresentationMode>
@State private var connectionTask: Task<Void, Error>?
private var isConnecting: Bool {
connectionTask != nil
}
@State private var isPasswordRequired: Bool = false
@State private var isTrustButton: Bool = false
private var remoteClient: UTMRemoteClient {
data.remoteClient
}
var body: some View {
NavigationView {
Form {
Section {
if #available(iOS 15, *) {
TextField("", text: $server.name, prompt: Text("Name (optional)"))
} else {
DefaultTextField("", text: $server.name, prompt: "Name (optional)")
}
} header: {
Text("Name")
}
Section {
if server.endpoint != nil {
Text(server.hostname)
} else {
if #available(iOS 15, *) {
TextField("", text: $server.hostname, prompt: Text("Hostname or IP address"))
.keyboardType(.asciiCapable)
.autocorrectionDisabled()
.textInputAutocapitalization(.never)
TextField("", value: $server.port, format: .number.grouping(.never), prompt: Text("Port"))
.keyboardType(.decimalPad)
} else {
DefaultTextField("", text: $server.hostname, prompt: "Hostname or IP address")
.keyboardType(.asciiCapable)
.autocorrectionDisabled()
NumberTextField("", number: $server.port, prompt: "Port")
}
}
} header: {
Text("Host")
}
let fingerprint = (server.fingerprint ^ remoteClient.fingerprint).hexString()
if !fingerprint.isEmpty {
Section {
if #available(iOS 16.4, *) {
Text(fingerprint).monospaced()
} else {
Text(fingerprint)
}
} header: {
Text("Fingerprint")
}
}
if isPasswordRequired {
Section {
if #available(iOS 15, *) {
FocusedPasswordView(password: $server.password.bound)
} else {
SecureField("Password", text: $server.password.bound)
}
Toggle("Save Password", isOn: $server.shouldSavePassword)
} header: {
Text("Password")
}
}
}.disabled(isConnecting)
.toolbar {
ToolbarItem(placement: .topBarLeading) {
Button {
presentationMode.wrappedValue.dismiss()
} label: {
Text("Close")
}.disabled(isConnecting)
}
ToolbarItem(placement: .topBarTrailing) {
HStack {
if isConnecting {
ProgressView().progressViewStyle(.circular)
Button {
connectionTask?.cancel()
} label: {
Text("Cancel")
}
} else {
Button {
connect()
} label: {
if isTrustButton {
Text("Trust")
} else {
Text("Connect")
}
}.disabled(server.hostname.isEmpty || !server.isAvailable)
}
}
}
}
}
.onAppear {
// if we have an existing password, assume it should be saved
if server.password?.isEmpty == false {
server.shouldSavePassword = true
}
if isAutoConnect {
connect()
}
}
.alert(item: $remoteClientState.alertMessage) { item in
Alert(title: Text(item.message))
}
}
private func connect() {
guard connectionTask == nil else {
return
}
connectionTask = Task {
let timeoutTask = Task {
try await Task.sleep(nanoseconds: kTimeoutSeconds * NSEC_PER_SEC)
connectionTask?.cancel()
remoteClientState.showErrorAlert(NSLocalizedString("Timed out trying to connect.", comment: "UTMRemoteConnectView"))
}
do {
try await remoteClient.connect(server)
} catch {
if case UTMRemoteClient.ConnectionError.passwordRequired = error {
withAnimation {
isPasswordRequired = true
isTrustButton = false
}
} else if case UTMRemoteClient.ConnectionError.fingerprintUntrusted(let fingerprint) = error, server.fingerprint.isEmpty {
withAnimation {
server.fingerprint = fingerprint
isTrustButton = true
}
remoteClientState.showErrorAlert(error.localizedDescription)
} else if error is CancellationError {
// ignore it
} else {
remoteClientState.showErrorAlert(error.localizedDescription)
}
}
timeoutTask.cancel()
connectionTask = nil
}
}
}
@available(iOS 15, *)
private struct FocusedPasswordView: View {
@Binding var password: String
@FocusState private var isFocused: Bool
var body: some View {
SecureField("Password", text: $password)
.focused($isFocused)
.onAppear {
isFocused = true
}
}
}
#Preview {
UTMRemoteConnectView(remoteClientState: .init())
}