Merge branch 'master' into av/ios-migrate-to-device

apps/ios/Shared/Model/SimpleXAPI.swift

@@ -90,12 +90,12 @@ private func withBGTask<T>(bgDelay: Double? = nil, f: @escaping () -> T) -> T {
     return r
 }
 
-func chatSendCmdSync(_ cmd: ChatCommand, bgTask: Bool = true, bgDelay: Double? = nil) -> ChatResponse {
+func chatSendCmdSync(_ cmd: ChatCommand, bgTask: Bool = true, bgDelay: Double? = nil, _ ctrl: chat_ctrl? = nil) -> ChatResponse {
     logger.debug("chatSendCmd \(cmd.cmdType)")
     let start = Date.now
     let resp = bgTask
-                ? withBGTask(bgDelay: bgDelay) { sendSimpleXCmd(cmd) }
-                : sendSimpleXCmd(cmd)
+                ? withBGTask(bgDelay: bgDelay) { sendSimpleXCmd(cmd, ctrl) }
+                : sendSimpleXCmd(cmd, ctrl)
     logger.debug("chatSendCmd \(cmd.cmdType): \(resp.responseType)")
     if case let .response(_, json) = resp {
         logger.debug("chatSendCmd \(cmd.cmdType) response: \(json)")
@@ -106,24 +106,24 @@ func chatSendCmdSync(_ cmd: ChatCommand, bgTask: Bool = true, bgDelay: Double? =
     return resp
 }
 
-func chatSendCmd(_ cmd: ChatCommand, bgTask: Bool = true, bgDelay: Double? = nil) async -> ChatResponse {
+func chatSendCmd(_ cmd: ChatCommand, bgTask: Bool = true, bgDelay: Double? = nil, _ ctrl: chat_ctrl? = nil) async -> ChatResponse {
     await withCheckedContinuation { cont in
-        cont.resume(returning: chatSendCmdSync(cmd, bgTask: bgTask, bgDelay: bgDelay))
+        cont.resume(returning: chatSendCmdSync(cmd, bgTask: bgTask, bgDelay: bgDelay, ctrl))
     }
 }
 
-func chatRecvMsg() async -> ChatResponse? {
+func chatRecvMsg(_ ctrl: chat_ctrl? = nil) async -> ChatResponse? {
     await withCheckedContinuation { cont in
         _  = withBGTask(bgDelay: msgDelay) { () -> ChatResponse? in
-            let resp = recvSimpleXMsg()
+            let resp = recvSimpleXMsg(ctrl)
             cont.resume(returning: resp)
             return resp
         }
     }
 }
 
-func apiGetActiveUser() throws -> User? {
-    let r = chatSendCmdSync(.showActiveUser)
+func apiGetActiveUser(ctrl: chat_ctrl? = nil) throws -> User? {
+    let r = chatSendCmdSync(.showActiveUser, ctrl)
     switch r {
     case let .activeUser(user): return user
     case .chatCmdError(_, .error(.noActiveUser)): return nil
@@ -131,8 +131,8 @@ func apiGetActiveUser() throws -> User? {
     }
 }
 
-func apiCreateActiveUser(_ p: Profile?, sameServers: Bool = false, pastTimestamp: Bool = false) throws -> User {
-    let r = chatSendCmdSync(.createActiveUser(profile: p, sameServers: sameServers, pastTimestamp: pastTimestamp))
+func apiCreateActiveUser(_ p: Profile?, sameServers: Bool = false, pastTimestamp: Bool = false, ctrl: chat_ctrl? = nil) throws -> User {
+    let r = chatSendCmdSync(.createActiveUser(profile: p, sameServers: sameServers, pastTimestamp: pastTimestamp), ctrl)
     if case let .activeUser(user) = r { return user }
     throw r
 }
@@ -210,8 +210,8 @@ func apiDeleteUser(_ userId: Int64, _ delSMPQueues: Bool, viewPwd: String?) asyn
     throw r
 }
 
-func apiStartChat() throws -> Bool {
-    let r = chatSendCmdSync(.startChat(mainApp: true))
+func apiStartChat(ctrl: chat_ctrl? = nil) throws -> Bool {
+    let r = chatSendCmdSync(.startChat(mainApp: true), ctrl)
     switch r {
     case .chatStarted: return true
     case .chatRunning: return false
@@ -240,14 +240,14 @@ func apiSuspendChat(timeoutMicroseconds: Int) {
     logger.error("apiSuspendChat error: \(String(describing: r))")
 }
 
-func apiSetTempFolder(tempFolder: String) throws {
-    let r = chatSendCmdSync(.setTempFolder(tempFolder: tempFolder))
+func apiSetTempFolder(tempFolder: String, ctrl: chat_ctrl? = nil) throws {
+    let r = chatSendCmdSync(.setTempFolder(tempFolder: tempFolder), ctrl)
     if case .cmdOk = r { return }
     throw r
 }
 
-func apiSetFilesFolder(filesFolder: String) throws {
-    let r = chatSendCmdSync(.setFilesFolder(filesFolder: filesFolder))
+func apiSetFilesFolder(filesFolder: String, ctrl: chat_ctrl? = nil) throws {
+    let r = chatSendCmdSync(.setFilesFolder(filesFolder: filesFolder), ctrl)
     if case .cmdOk = r { return }
     throw r
 }
@@ -276,6 +276,10 @@ func apiStorageEncryption(currentKey: String = "", newKey: String = "") async th
     try await sendCommandOkResp(.apiStorageEncryption(config: DBEncryptionConfig(currentKey: currentKey, newKey: newKey)))
 }
 
+func testStorageEncryption(key: String, _ ctrl: chat_ctrl? = nil) async throws {
+    try await sendCommandOkResp(.testStorageEncryption(key: key), ctrl)
+}
+
 func apiGetChats() throws -> [ChatData] {
     let userId = try currentUserId("apiGetChats")
     return try apiChatsResponse(chatSendCmdSync(.apiGetChats(userId: userId)))
@@ -498,8 +502,8 @@ func getNetworkConfig() async throws -> NetCfg? {
     throw r
 }
 
-func setNetworkConfig(_ cfg: NetCfg) throws {
-    let r = chatSendCmdSync(.apiSetNetworkConfig(networkConfig: cfg))
+func setNetworkConfig(_ cfg: NetCfg, ctrl: chat_ctrl? = nil) throws {
+    let r = chatSendCmdSync(.apiSetNetworkConfig(networkConfig: cfg), ctrl)
     if case .cmdOk = r { return }
     throw r
 }
@@ -864,6 +868,26 @@ func apiChatUnread(type: ChatType, id: Int64, unreadChat: Bool) async throws {
     try await sendCommandOkResp(.apiChatUnread(type: type, id: id, unreadChat: unreadChat))
 }
 
+func uploadStandaloneFile(user: any UserLike, file: CryptoFile, ctrl: chat_ctrl? = nil) async -> (FileTransferMeta?, String?) {
+    let r = await chatSendCmd(.apiUploadStandaloneFile(userId: user.userId, file: file), ctrl)
+    if case let .sndStandaloneFileCreated(_, fileTransferMeta) = r {
+        return (fileTransferMeta, nil)
+    } else {
+        logger.error("uploadStandaloneFile error: \(String(describing: r))")
+        return (nil, String(describing: r))
+    }
+}
+
+func downloadStandaloneFile(user: any UserLike, url: String, file: CryptoFile, ctrl: chat_ctrl? = nil) async -> (RcvFileTransfer?, String?) {
+    let r = await chatSendCmd(.apiDownloadStandaloneFile(userId: user.userId, url: url, file: file), ctrl)
+    if case let .rcvStandaloneFileCreated(_, rcvFileTransfer) = r {
+        return (rcvFileTransfer, nil)
+    } else {
+        logger.error("downloadStandaloneFile error: \(String(describing: r))")
+        return (nil, String(describing: r))
+    }
+}
+
 func receiveFile(user: any UserLike, fileId: Int64, auto: Bool = false) async {
     if let chatItem = await apiReceiveFile(fileId: fileId, encrypted: privacyEncryptLocalFilesGroupDefault.get(), auto: auto) {
         await chatItemSimpleUpdate(user, chatItem)
@@ -909,8 +933,8 @@ func cancelFile(user: User, fileId: Int64) async {
     }
 }
 
-func apiCancelFile(fileId: Int64) async -> AChatItem? {
-    let r = await chatSendCmd(.cancelFile(fileId: fileId))
+func apiCancelFile(fileId: Int64, ctrl: chat_ctrl? = nil) async -> AChatItem? {
+    let r = await chatSendCmd(.cancelFile(fileId: fileId), ctrl)
     switch r {
     case let .sndFileCancelled(_, chatItem, _, _) : return chatItem
     case let .rcvFileCancelled(_, chatItem, _) : return chatItem
@@ -1082,8 +1106,8 @@ func apiMarkChatItemRead(_ cInfo: ChatInfo, _ cItem: ChatItem) async {
     }
 }
 
-private func sendCommandOkResp(_ cmd: ChatCommand) async throws {
-    let r = await chatSendCmd(cmd)
+private func sendCommandOkResp(_ cmd: ChatCommand, _ ctrl: chat_ctrl? = nil) async throws {
+    let r = await chatSendCmd(cmd, ctrl)
     if case .cmdOk = r { return }
     throw r
 }
@@ -1323,6 +1347,16 @@ func startChat(refreshInvitations: Bool = true) throws {
     chatLastStartGroupDefault.set(Date.now)
 }
 
+func startChatWithTemporaryDatabase(ctrl: chat_ctrl) throws -> User? {
+    logger.debug("startChatWithTemporaryDatabase")
+    let migrationActiveUser = try? apiGetActiveUser(ctrl: ctrl) ?? apiCreateActiveUser(Profile(displayName: "Temp", fullName: ""), ctrl: ctrl)
+    try setNetworkConfig(getNetCfg(), ctrl: ctrl)
+    try apiSetTempFolder(tempFolder: getMigrationTempFilesDirectory().path, ctrl: ctrl)
+    try apiSetFilesFolder(filesFolder: getMigrationTempFilesDirectory().path, ctrl: ctrl)
+    _ = try apiStartChat(ctrl: ctrl)
+    return migrationActiveUser
+}
+
 func changeActiveUser(_ userId: Int64, viewPwd: String?) {
     do {
         try changeActiveUser_(userId, viewPwd: viewPwd)
@@ -1701,27 +1735,37 @@ func processReceivedMsg(_ res: ChatResponse) async {
     case let .rcvFileSndCancelled(user, aChatItem, _):
         await chatItemSimpleUpdate(user, aChatItem)
         Task { cleanupFile(aChatItem) }
-    case let .rcvFileProgressXFTP(user, aChatItem, _, _):
-        await chatItemSimpleUpdate(user, aChatItem)
-    case let .rcvFileError(user, aChatItem):
-        await chatItemSimpleUpdate(user, aChatItem)
-        Task { cleanupFile(aChatItem) }
+    case let .rcvFileProgressXFTP(user, aChatItem, _, _, _):
+        if let aChatItem = aChatItem {
+            await chatItemSimpleUpdate(user, aChatItem)
+        }
+    case let .rcvFileError(user, aChatItem, _):
+        if let aChatItem = aChatItem {
+            await chatItemSimpleUpdate(user, aChatItem)
+            Task { cleanupFile(aChatItem) }
+        }
     case let .sndFileStart(user, aChatItem, _):
         await chatItemSimpleUpdate(user, aChatItem)
     case let .sndFileComplete(user, aChatItem, _):
         await chatItemSimpleUpdate(user, aChatItem)
         Task { cleanupDirectFile(aChatItem) }
     case let .sndFileRcvCancelled(user, aChatItem, _):
-        await chatItemSimpleUpdate(user, aChatItem)
-        Task { cleanupDirectFile(aChatItem) }
+        if let aChatItem = aChatItem {
+            await chatItemSimpleUpdate(user, aChatItem)
+            Task { cleanupDirectFile(aChatItem) }
+        }
     case let .sndFileProgressXFTP(user, aChatItem, _, _, _):
-        await chatItemSimpleUpdate(user, aChatItem)
+        if let aChatItem = aChatItem {
+            await chatItemSimpleUpdate(user, aChatItem)
+        }
     case let .sndFileCompleteXFTP(user, aChatItem, _):
         await chatItemSimpleUpdate(user, aChatItem)
         Task { cleanupFile(aChatItem) }
-    case let .sndFileError(user, aChatItem):
-        await chatItemSimpleUpdate(user, aChatItem)
-        Task { cleanupFile(aChatItem) }
+    case let .sndFileError(user, aChatItem, _):
+        if let aChatItem = aChatItem {
+            await chatItemSimpleUpdate(user, aChatItem)
+            Task { cleanupFile(aChatItem) }
+        }
     case let .callInvitation(invitation):
         await MainActor.run {
             m.callInvitations[invitation.contact.id] = invitation

apps/ios/Shared/Views/Database/DatabaseEncryptionView.swift

@@ -36,6 +36,7 @@ enum DatabaseEncryptionAlert: Identifiable {
 struct DatabaseEncryptionView: View {
     @EnvironmentObject private var m: ChatModel
     @Binding var useKeychain: Bool
+    var migration: Bool
     @State private var alert: DatabaseEncryptionAlert? = nil
     @State private var progressIndicator = false
     @State private var useKeychainToggle = storeDBPassphraseGroupDefault.get()
@@ -48,7 +49,12 @@ struct DatabaseEncryptionView: View {
 
     var body: some View {
         ZStack {
-            databaseEncryptionView()
+            List {
+                if migration {
+                    chatStoppedView()
+                }
+                databaseEncryptionView()
+            }
             if progressIndicator {
                 ProgressView().scaleEffect(2)
             }
@@ -56,47 +62,49 @@ struct DatabaseEncryptionView: View {
     }
 
     private func databaseEncryptionView() -> some View {
-        List {
-            Section {
+        Section {
+            if !migration {
                 settingsRow(storedKey ? "key.fill" : "key", color: storedKey ? .green : .secondary) {
                     Toggle("Save passphrase in Keychain", isOn: $useKeychainToggle)
-                    .onChange(of: useKeychainToggle) { _ in
-                        if useKeychainToggle {
-                            setUseKeychain(true)
-                        } else if storedKey {
-                            alert = .keychainRemoveKey
-                        } else {
-                            setUseKeychain(false)
+                        .onChange(of: useKeychainToggle) { _ in
+                            if useKeychainToggle {
+                                setUseKeychain(true)
+                            } else if storedKey {
+                                alert = .keychainRemoveKey
+                            } else {
+                                setUseKeychain(false)
+                            }
                         }
-                    }
-                    .disabled(initialRandomDBPassphrase)
+                        .disabled(initialRandomDBPassphrase)
                 }
+            }
 
-                if !initialRandomDBPassphrase && m.chatDbEncrypted == true {
-                    PassphraseField(key: $currentKey, placeholder: "Current passphrase…", valid: validKey(currentKey))
+            if !initialRandomDBPassphrase && m.chatDbEncrypted == true {
+                PassphraseField(key: $currentKey, placeholder: "Current passphrase…", valid: validKey(currentKey))
+            }
+
+            PassphraseField(key: $newKey, placeholder: "New passphrase…", valid: validKey(newKey), showStrength: true)
+            PassphraseField(key: $confirmNewKey, placeholder: "Confirm new passphrase…", valid: confirmNewKey == "" || newKey == confirmNewKey)
+
+            settingsRow("lock.rotation") {
+                Button(migration ? "Set passphrase" : "Update database passphrase") {
+                    alert = currentKey == ""
+                    ? (useKeychain ? .encryptDatabaseSaved : .encryptDatabase)
+                    : (useKeychain ? .changeDatabaseKeySaved : .changeDatabaseKey)
                 }
-
-                PassphraseField(key: $newKey, placeholder: "New passphrase…", valid: validKey(newKey), showStrength: true)
-                PassphraseField(key: $confirmNewKey, placeholder: "Confirm new passphrase…", valid: confirmNewKey == "" || newKey == confirmNewKey)
-
-                settingsRow("lock.rotation") {
-                    Button("Update database passphrase") {
-                        alert = currentKey == ""
-                        ? (useKeychain ? .encryptDatabaseSaved : .encryptDatabase)
-                        : (useKeychain ? .changeDatabaseKeySaved : .changeDatabaseKey)
-                    }
-                }
-                .disabled(
-                    (m.chatDbEncrypted == true && currentKey == "") ||
-                    currentKey == newKey ||
-                    newKey != confirmNewKey ||
-                    newKey == "" ||
-                    !validKey(currentKey) ||
-                    !validKey(newKey)
-                )
-            } header: {
-                Text("")
-            } footer: {
+            }
+            .disabled(
+                (m.chatDbEncrypted == true && currentKey == "") ||
+                currentKey == newKey ||
+                newKey != confirmNewKey ||
+                newKey == "" ||
+                !validKey(currentKey) ||
+                !validKey(newKey)
+            )
+        } header: {
+            Text(migration ? "Database passphrase" : "")
+        } footer: {
+            if !migration {
                 VStack(alignment: .leading, spacing: 16) {
                     if m.chatDbEncrypted == false {
                         Text("Your chat database is not encrypted - set passphrase to encrypt it.")
@@ -121,6 +129,10 @@ struct DatabaseEncryptionView: View {
                 }
                 .padding(.top, 1)
                 .font(.callout)
+            } else {
+                Text("Set database passphrase to migrate it")
+                .padding(.top, 1)
+                .font(.callout)
             }
         }
         .onAppear {
@@ -346,6 +358,6 @@ func validKey(_ s: String) -> Bool {
 
 struct DatabaseEncryptionView_Previews: PreviewProvider {
     static var previews: some View {
-        DatabaseEncryptionView(useKeychain: Binding.constant(true))
+        DatabaseEncryptionView(useKeychain: Binding.constant(true), migration: false)
     }
 }

apps/ios/Shared/Views/Database/DatabaseView.swift

@@ -116,7 +116,7 @@ struct DatabaseView: View {
                 let color: Color = unencrypted ? .orange : .secondary
                 settingsRow(unencrypted ? "lock.open" : useKeychain ? "key" : "lock", color: color) {
                     NavigationLink {
-                        DatabaseEncryptionView(useKeychain: $useKeychain)
+                        DatabaseEncryptionView(useKeychain: $useKeychain, migration: false)
                             .navigationTitle("Database passphrase")
                     } label: {
                         Text("Database passphrase")
@@ -485,6 +485,10 @@ func deleteChatAsync() async throws {
     _ = kcDatabasePassword.remove()
     storeDBPassphraseGroupDefault.set(true)
     deleteAppDatabaseAndFiles()
+    // Clean state so when creating new user the app will start chat automatically (see CreateProfile:createProfile())
+    DispatchQueue.main.async {
+        ChatModel.shared.users = []
+    }
 }
 
 struct DatabaseView_Previews: PreviewProvider {

apps/ios/Shared/Views/Database/MigrateToAppGroupView.swift

@@ -216,16 +216,18 @@ struct MigrateToAppGroupView: View {
     }
 }
 
-func exportChatArchive() async throws -> URL {
+func exportChatArchive(_ storagePath: URL? = nil) async throws -> URL {
     let archiveTime = Date.now
     let ts = archiveTime.ISO8601Format(Date.ISO8601FormatStyle(timeSeparator: .omitted))
     let archiveName = "simplex-chat.\(ts).zip"
-    let archivePath = getDocumentsDirectory().appendingPathComponent(archiveName)
+    let archivePath = (storagePath ?? getDocumentsDirectory()).appendingPathComponent(archiveName)
     let config = ArchiveConfig(archivePath: archivePath.path)
     try await apiExportArchive(config: config)
-    deleteOldArchive()
-    UserDefaults.standard.set(archiveName, forKey: DEFAULT_CHAT_ARCHIVE_NAME)
-    chatArchiveTimeDefault.set(archiveTime)
+    if storagePath == nil {
+        deleteOldArchive()
+        UserDefaults.standard.set(archiveName, forKey: DEFAULT_CHAT_ARCHIVE_NAME)
+        chatArchiveTimeDefault.set(archiveTime)
+    }
     return archivePath
 }
 

apps/ios/Shared/Views/Migration/MigrateFromAnotherDevice.swift

@@ -0,0 +1,515 @@
+//
+//  MigrateFromAnotherDevice.swift
+//  SimpleX (iOS)
+//
+//  Created by Avently on 23.02.2024.
+//  Copyright © 2024 SimpleX Chat. All rights reserved.
+//
+
+import SwiftUI
+import SimpleXChat
+
+private enum MigrationState: Equatable {
+    case pasteOrScanLink(link: String)
+    case linkDownloading(link: String)
+    case downloadProgress(downloadedBytes: Int64, totalBytes: Int64, fileId: Int64, link: String, archivePath: URL, ctrl: chat_ctrl?)
+    case downloadFailed(totalBytes: Int64, link: String, archivePath: URL)
+    case archiveImport(archivePath: String)
+    case passphraseEntering(passphrase: String)
+    case migration(passphrase: String)
+}
+
+private enum MigrateFromAnotherDeviceViewAlert: Identifiable {
+    case chatImportedWithErrors(title: LocalizedStringKey = "Chat database imported",
+                                text: LocalizedStringKey = "Some non-fatal errors occurred during import - you may see Chat console for more details.")
+
+    case wrongPassphrase(title: LocalizedStringKey = "Wrong passphrase!", message: LocalizedStringKey = "Enter correct passphrase.")
+    case invalidConfirmation(title: LocalizedStringKey = "Invalid migration confirmation")
+    case keychainError(_ title: LocalizedStringKey = "Keychain error")
+    case databaseError(_ title: LocalizedStringKey = "Database error", message: String)
+    case unknownError(_ title: LocalizedStringKey = "Unknown error", message: String)
+
+    case error(title: LocalizedStringKey, error: String = "")
+
+    var id: String {
+        switch self {
+        case .chatImportedWithErrors: return "chatImportedWithErrors"
+
+        case .wrongPassphrase: return "wrongPassphrase"
+        case .invalidConfirmation: return "invalidConfirmation"
+        case .keychainError: return "keychainError"
+        case let .databaseError(title, message): return "\(title) \(message)"
+        case let .unknownError(title, message): return "\(title) \(message)"
+
+        case let .error(title, _): return "error \(title)"
+        }
+    }
+}
+
+struct MigrateFromAnotherDevice: View {
+    @EnvironmentObject var m: ChatModel
+    @Environment(\.dismiss) var dismiss: DismissAction
+    @State private var migrationState: MigrationState = .pasteOrScanLink(link: "")
+    @State private var useKeychain = storeDBPassphraseGroupDefault.get()
+    @State private var alert: MigrateFromAnotherDeviceViewAlert?
+    private let tempDatabaseUrl = urlForTemporaryDatabase()
+    @State private var chatReceiver: MigrationChatReceiver? = nil
+    @State private var backDisabled: Bool = false
+    @State private var showQRCodeScanner: Bool = true
+
+    var body: some View {
+        VStack {
+            switch migrationState {
+            case let .pasteOrScanLink(link):
+                pasteOrScanLinkView(link)
+            case let .linkDownloading(link):
+                linkDownloadingView(link)
+            case let .downloadProgress(downloaded, total, _, link, archivePath, _):
+                downloadProgressView(downloaded, totalBytes: total, link, archivePath)
+            case let .downloadFailed(total, link, archivePath):
+                downloadFailedView(totalBytes: total, link, archivePath)
+            case let .archiveImport(archivePath):
+                archiveImportView(archivePath)
+            case let .passphraseEntering(passphrase):
+                PassphraseEnteringView(migrationState: $migrationState, currentKey: passphrase, alert: $alert)
+            case let .migration(passphrase):
+                migrationView(passphrase)
+            }
+        }
+        .modifier(BackButton(label: "Back") {
+            if !backDisabled {
+                dismiss()
+            }
+        })
+        .onChange(of: migrationState) { state in
+            backDisabled = switch migrationState {
+            case .passphraseEntering: true
+            case .migration: true
+            default: false
+            }
+        }
+        .onDisappear {
+            Task {
+                if case let .downloadProgress(_, _, fileId, _, _, ctrl) = migrationState, let ctrl {
+                    await stopArchiveDownloading(fileId, ctrl)
+                }
+                chatReceiver?.stop()
+                try? FileManager.default.removeItem(atPath: "\(tempDatabaseUrl.path)_chat.db")
+                try? FileManager.default.removeItem(atPath: "\(tempDatabaseUrl.path)_agent.db")
+                try? FileManager.default.removeItem(at: getMigrationTempFilesDirectory())
+            }
+        }
+        .alert(item: $alert) { alert in
+            switch alert {
+            case let .chatImportedWithErrors(title, text): 
+                return Alert(title: Text(title), message: Text(text))
+            case let .wrongPassphrase(title, message):
+                return Alert(title: Text(title), message: Text(message))
+            case let .invalidConfirmation(title):
+                return Alert(title: Text(title))
+            case let .keychainError(title):
+                return Alert(title: Text(title))
+            case let .databaseError(title, message):
+                return Alert(title: Text(title), message: Text(message))
+            case let .unknownError(title, message):
+                return Alert(title: Text(title), message: Text(message))
+            case let .error(title, error):
+                return Alert(title: Text(title), message: Text(error))
+            }
+        }
+        .interactiveDismissDisabled(backDisabled)
+    }
+
+    private func pasteOrScanLinkView(_ link: String) -> some View {
+        ZStack {
+            List {
+                Section("Paste link to an archive") {
+                    pasteLinkView()
+                }
+                Section("Or scan QR code") {
+                    ScannerInView(showQRCodeScanner: $showQRCodeScanner) { resp in
+                        switch resp {
+                        case let .success(r):
+                            let link = r.string
+                            if strHasSimplexFileLink(link.trimmingCharacters(in: .whitespaces)) {
+                                migrationState = .linkDownloading(link: link.trimmingCharacters(in: .whitespaces))
+                            } else {
+                                alert = .error(title: "Invalid link", error: "The text you pasted is not a SimpleX link.")
+                            }
+                        case let .failure(e):
+                            logger.error("processQRCode QR code error: \(e.localizedDescription)")
+                            alert = .error(title: "Invalid link", error: "The text you pasted is not a SimpleX link.")
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    private func pasteLinkView() -> some View {
+        Button {
+            if let str = UIPasteboard.general.string {
+                if strHasSimplexFileLink(str.trimmingCharacters(in: .whitespaces)) {
+                    migrationState = .linkDownloading(link: str.trimmingCharacters(in: .whitespaces))
+                } else {
+                    alert = .error(title: "Invalid link", error: "The text you pasted is not a SimpleX link.")
+                }
+            }
+        } label: {
+            Text("Tap to paste link")
+        }
+        .disabled(!ChatModel.shared.pasteboardHasStrings)
+        .frame(maxWidth: .infinity, alignment: .center)
+    }
+
+    private func linkDownloadingView(_ link: String) -> some View {
+        ZStack {
+            List {
+                Section {} header: {
+                    Text("Downloading link details…")
+                }
+            }
+            progressView()
+        }
+        .onAppear {
+            downloadLinkDetails(link)
+        }
+    }
+
+    private func downloadProgressView(_ downloadedBytes: Int64, totalBytes: Int64, _ link: String, _ archivePath: URL) -> some View {
+        ZStack {
+            List {
+                Section {} header: {
+                    Text("Downloading archive…")
+                }
+            }
+            let ratio = Float(downloadedBytes) / Float(totalBytes)
+            largeProgressView(ratio, "\(Int(ratio * 100))%", "\(ByteCountFormatter.string(fromByteCount: downloadedBytes, countStyle: .binary)) downloaded")
+        }
+    }
+
+    private func downloadFailedView(totalBytes: Int64, _ link: String, _ archivePath: URL) -> some View {
+        List {
+            Section {
+                Button(action: {
+                    migrationState = .downloadProgress(downloadedBytes: 0, totalBytes: totalBytes, fileId: 0, link: link, archivePath: archivePath, ctrl: nil)
+                }) {
+                    settingsRow("tray.and.arrow.down") {
+                        Text("Repeat download").foregroundColor(.accentColor)
+                    }
+                }
+            } header: {
+                Text("Download failed")
+            } footer: {
+                Text("You can give another try")
+                    .font(.callout)
+            }
+        }
+        .onAppear {
+            chatReceiver?.stop()
+            try? FileManager.default.removeItem(atPath: "\(tempDatabaseUrl.path)_chat.db")
+            try? FileManager.default.removeItem(atPath: "\(tempDatabaseUrl.path)_agent.db")
+        }
+    }
+
+    private func archiveImportView(_ archivePath: String) -> some View {
+        ZStack {
+            List {
+                Section {} header: {
+                    Text("Importing archive…")
+                }
+            }
+            progressView()
+        }
+        .onAppear {
+            importArchive(archivePath)
+        }
+    }
+
+    private func migrationView(_ passphrase: String) -> some View {
+        ZStack {
+            List {
+                Section {} header: {
+                    Text("Migrating…")
+                }
+            }
+            progressView()
+        }
+        .onAppear {
+            startChat(passphrase)
+        }
+    }
+
+    private func largeProgressView(_ value: Float, _ title: String, _ description: LocalizedStringKey) -> some View {
+        ZStack {
+            VStack {
+                Text(description)
+                    .font(.title3)
+                    .hidden()
+
+                Text(title)
+                    .font(.system(size: 60))
+                    .foregroundColor(.accentColor)
+
+                Text(description)
+                    .font(.title3)
+            }
+
+            Circle()
+                .trim(from: 0, to: CGFloat(value))
+                .stroke(
+                    Color.accentColor,
+                    style: StrokeStyle(lineWidth: 30)
+                )
+                .rotationEffect(.degrees(-90))
+                .animation(.linear, value: value)
+                .frame(maxWidth: .infinity)
+                .padding(.horizontal)
+                .padding(.horizontal)
+        }
+        .frame(maxWidth: .infinity)
+    }
+
+    private func downloadLinkDetails(_ link: String) {
+        let archiveTime = Date.now
+        let ts = archiveTime.ISO8601Format(Date.ISO8601FormatStyle(timeSeparator: .omitted))
+        let archiveName = "simplex-chat.\(ts).zip"
+        let archivePath = getMigrationTempFilesDirectory().appendingPathComponent(archiveName)
+
+        startDownloading(0, link, archivePath)
+    }
+
+    private func initTemporaryDatabase() -> (chat_ctrl, User)? {
+        let (status, ctrl) = chatInitTemporaryDatabase(url: tempDatabaseUrl)
+        showErrorOnMigrationIfNeeded(status, $alert)
+        do {
+            if let ctrl, let user = try startChatWithTemporaryDatabase(ctrl: ctrl) {
+                return (ctrl, user)
+            }
+        } catch let error {
+            logger.error("Error while starting chat in temporary database: \(error.localizedDescription)")
+        }
+        return nil
+    }
+
+    private func startDownloading(_ totalBytes: Int64, _ link: String, _ archivePath: URL) {
+        Task {
+            guard let ctrlAndUser = initTemporaryDatabase() else {
+                return migrationState = .downloadFailed(totalBytes: totalBytes, link: link, archivePath: archivePath)
+            }
+            let (ctrl, user) = ctrlAndUser
+            chatReceiver = MigrationChatReceiver(ctrl: ctrl) { msg in
+                Task {
+                    await TerminalItems.shared.add(.resp(.now, msg))
+                }
+                logger.debug("processReceivedMsg: \(msg.responseType)")
+                await MainActor.run {
+                    switch msg {
+                    case let .rcvFileProgressXFTP(_, _, receivedSize, totalSize, rcvFileTransfer):
+                        migrationState = .downloadProgress(downloadedBytes: receivedSize, totalBytes: totalSize, fileId: rcvFileTransfer.fileId, link: link, archivePath: archivePath, ctrl: ctrl)
+                    case .rcvStandaloneFileComplete:
+                        DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
+                            migrationState = .archiveImport(archivePath: archivePath.path)
+                        }
+                    default:
+                        logger.debug("unsupported event: \(msg.responseType)")
+                    }
+                }
+            }
+            chatReceiver?.start()
+
+            let (res, error) = await downloadStandaloneFile(user: user, url: link, file: CryptoFile.plain(archivePath.lastPathComponent), ctrl: ctrl)
+            if res == nil {
+                migrationState = .downloadFailed(totalBytes: totalBytes, link: link, archivePath: archivePath)
+                return alert = .error(title: "Error downloading the archive", error: error ?? "")
+            }
+        }
+    }
+
+    private func importArchive(_ archivePath: String) {
+        Task {
+            do {
+                try await apiDeleteStorage()
+                do {
+                    let config = ArchiveConfig(archivePath: archivePath)
+                    let archiveErrors = try await apiImportArchive(config: config)
+                    if !archiveErrors.isEmpty {
+                        alert = .chatImportedWithErrors()
+                    }
+                    migrationState = .passphraseEntering(passphrase: "")
+                } catch let error {
+                    alert = .error(title: "Error importing chat database", error: responseError(error))
+                }
+            } catch let error {
+                alert = .error(title: "Error deleting chat database", error: responseError(error))
+            }
+        }
+    }
+
+
+    private func stopArchiveDownloading(_ fileId: Int64, _ ctrl: chat_ctrl) async {
+        _ = await apiCancelFile(fileId: fileId, ctrl: ctrl)
+    }
+
+    private func cancelMigration(_ fileId: Int64, _ ctrl: chat_ctrl) {
+        Task {
+            await stopArchiveDownloading(fileId, ctrl)
+            await MainActor.run {
+                dismiss()
+            }
+        }
+    }
+
+    private func startChat(_ passphrase: String) {
+        _ = kcDatabasePassword.set(passphrase)
+        storeDBPassphraseGroupDefault.set(true)
+        initialRandomDBPassphraseGroupDefault.set(false)
+        AppChatState.shared.set(.active)
+        Task {
+            do {
+//                resetChatCtrl()
+                try initializeChat(start: true, confirmStart: false, dbKey: passphrase, refreshInvitations: true)
+                await MainActor.run {
+                    hideView()
+                    AlertManager.shared.showAlertMsg(title: "Chat migrated!", message: "Notify another device")
+                }
+            } catch let error {
+                hideView()
+                AlertManager.shared.showAlert(Alert(title: Text("Error starting chat"), message: Text(responseError(error))))
+            }
+        }
+    }
+
+    private func hideView() {
+        onboardingStageDefault.set(.onboardingComplete)
+        m.onboardingStage = .onboardingComplete
+        dismiss()
+    }
+
+    private func strHasSimplexFileLink(_ text: String) -> Bool {
+        text.starts(with: "simplex:/file") || text.starts(with: "https://simplex.chat/file")
+    }
+
+    private static func urlForTemporaryDatabase() -> URL {
+        URL(fileURLWithPath: generateNewFileName(getMigrationTempFilesDirectory().path + "/" + "migration", "db", fullPath: true))
+    }
+}
+
+private struct PassphraseEnteringView: View {
+    @Binding var migrationState: MigrationState
+    @State private var useKeychain = storeDBPassphraseGroupDefault.get()
+    @State var currentKey: String
+    @State private var verifyingPassphrase: Bool = false
+    @Binding var alert: MigrateFromAnotherDeviceViewAlert?
+
+    var body: some View {
+        ZStack {
+            List {
+                Section {
+                    PassphraseField(key: $currentKey, placeholder: "Current passphrase…", valid: validKey(currentKey))
+                    Button(action: {
+                        verifyingPassphrase = true
+                        hideKeyboard()
+                        Task {
+                            let (status, ctrl) = chatInitTemporaryDatabase(url: getAppDatabasePath(), key: currentKey)
+                            let success = switch status {
+                            case .ok, .invalidConfirmation: true
+                            default: false
+                            }
+                            if success {
+//                                if let ctrl {
+//                                    chat_close_store(ctrl)
+//                                }
+                                applyChatCtrl(ctrl: ctrl, result: (currentKey != "", status))
+                                migrationState = .migration(passphrase: currentKey)
+                            } else {
+                                showErrorOnMigrationIfNeeded(status, $alert)
+                            }
+                            verifyingPassphrase = false
+                        }
+                    }) {
+                        settingsRow("key", color: .secondary) {
+                            Text("Open chat")
+                        }
+                    }
+                } header: {
+                    Text("Enter passphrase")
+                } footer: {
+                    Text("Passphrase will be stored on device in Keychain. It's required for notifications to work. You can change it later in settings")
+                        .font(.callout)
+                }
+            }
+            if verifyingPassphrase {
+                progressView()
+            }
+        }
+    }
+}
+
+private func showErrorOnMigrationIfNeeded(_ status: DBMigrationResult, _ alert: Binding<MigrateFromAnotherDeviceViewAlert?>) {
+    switch status {
+    case .invalidConfirmation:
+        alert.wrappedValue = .invalidConfirmation()
+    case .errorNotADatabase:
+        alert.wrappedValue = .wrongPassphrase()
+    case .errorKeychain:
+        alert.wrappedValue = .keychainError()
+    case let .errorSQL(_, error):
+        alert.wrappedValue = .databaseError(message: error)
+    case let .unknown(error):
+        alert.wrappedValue = .unknownError(message: error)
+    case .errorMigration: ()
+    case .ok: ()
+    }
+}
+
+private func progressView() -> some View {
+    VStack {
+        ProgressView().scaleEffect(2)
+    }
+    .frame(maxWidth: .infinity, maxHeight: .infinity )
+}
+
+private class MigrationChatReceiver {
+    let ctrl: chat_ctrl
+    let processReceivedMsg: (ChatResponse) async -> Void
+    private var receiveLoop: Task<Void, Never>?
+    private var receiveMessages = true
+
+    init(ctrl: chat_ctrl, _ processReceivedMsg: @escaping (ChatResponse) async -> Void) {
+        self.ctrl = ctrl
+        self.processReceivedMsg = processReceivedMsg
+    }
+
+    func start() {
+        logger.debug("MigrationChatReceiver.start")
+        receiveMessages = true
+        if receiveLoop != nil { return }
+        receiveLoop = Task { await receiveMsgLoop() }
+    }
+
+    func receiveMsgLoop() async {
+        // TODO use function that has timeout
+        if let msg = await chatRecvMsg(ctrl) {
+            await processReceivedMsg(msg)
+        }
+        if self.receiveMessages {
+            _ = try? await Task.sleep(nanoseconds: 7_500_000)
+            await receiveMsgLoop()
+        }
+    }
+
+    func stop() {
+        logger.debug("MigrationChatReceiver.stop")
+        receiveMessages = false
+        receiveLoop?.cancel()
+        receiveLoop = nil
+        chat_close_store(ctrl)
+    }
+}
+
+struct MigrateFromAnotherDevice_Previews: PreviewProvider {
+    static var previews: some View {
+        MigrateFromAnotherDevice()
+    }
+}

apps/ios/Shared/Views/Migration/MigrateToAnotherDevice.swift

@@ -0,0 +1,670 @@
+//
+//  MigrateToAnotherDevice.swift
+//  SimpleX (iOS)
+//
+//  Created by Avently on 14.02.2024.
+//  Copyright © 2024 SimpleX Chat. All rights reserved.
+//
+
+import SwiftUI
+import SimpleXChat
+
+private enum MigrationState: Equatable {
+    case initial
+    case chatStopInProgress
+    case chatStopFailed(reason: String)
+    case passphraseNotSet
+    case passphraseConfirmation
+    case uploadConfirmation
+    case archiving
+    case uploadProgress(uploadedBytes: Int64, totalBytes: Int64, fileId: Int64, archivePath: URL, ctrl: chat_ctrl?)
+    case uploadFailed(totalBytes: Int64, archivePath: URL)
+    case linkCreation(totalBytes: Int64)
+    case linkShown(fileId: Int64, link: String, archivePath: URL, ctrl: chat_ctrl)
+    case finished
+}
+
+private enum MigrateToAnotherDeviceViewAlert: Identifiable {
+    case deleteChat(_ title: LocalizedStringKey = "Delete chat profile?", _ text: LocalizedStringKey = "This action cannot be undone - your profile, contacts, messages and files will be irreversibly lost.")
+    case startChat(_ title: LocalizedStringKey = "Start chat?", _ text: LocalizedStringKey = "Warning: starting chat on multiple devices is not supported and will cause message delivery failures")
+
+    case wrongPassphrase(title: LocalizedStringKey = "Wrong passphrase!", message: LocalizedStringKey = "Enter correct passphrase.")
+    case invalidConfirmation(title: LocalizedStringKey = "Invalid migration confirmation")
+    case keychainError(_ title: LocalizedStringKey = "Keychain error")
+    case databaseError(_ title: LocalizedStringKey = "Database error", message: String)
+    case unknownError(_ title: LocalizedStringKey = "Unknown error", message: String)
+
+    case error(title: LocalizedStringKey, error: String = "")
+
+    var id: String {
+        switch self {
+        case let .deleteChat(title, text): return "\(title) \(text)"
+        case let .startChat(title, text): return "\(title) \(text)"
+
+        case .wrongPassphrase: return "wrongPassphrase"
+        case .invalidConfirmation: return "invalidConfirmation"
+        case .keychainError: return "keychainError"
+        case let .databaseError(title, message): return "\(title) \(message)"
+        case let .unknownError(title, message): return "\(title) \(message)"
+
+        case let .error(title, _): return "error \(title)"
+        }
+    }
+}
+
+struct MigrateToAnotherDevice: View {
+    @EnvironmentObject var m: ChatModel
+    @Environment(\.dismiss) var dismiss: DismissAction
+    @Binding var showSettings: Bool
+    @State private var migrationState: MigrationState = .initial
+    @State private var useKeychain = storeDBPassphraseGroupDefault.get()
+    @AppStorage(GROUP_DEFAULT_INITIAL_RANDOM_DB_PASSPHRASE, store: groupDefaults) private var initialRandomDBPassphrase: Bool = false
+    @State private var alert: MigrateToAnotherDeviceViewAlert?
+    @State private var authorized = !UserDefaults.standard.bool(forKey: DEFAULT_PERFORM_LA)
+    @State private var chatWasStoppedInitially: Bool = true
+    private let tempDatabaseUrl = urlForTemporaryDatabase()
+    @State private var chatReceiver: MigrationChatReceiver? = nil
+    @State private var backDisabled: Bool = false
+
+    var body: some View {
+        if authorized {
+            migrateView()
+        } else {
+            Button(action: runAuth) { Label("Unlock", systemImage: "lock") }
+                .onAppear(perform: runAuth)
+        }
+    }
+
+    private func runAuth() { authorize(NSLocalizedString("Open migration to another device", comment: "authentication reason"), $authorized) }
+
+    func migrateView() -> some View {
+        VStack {
+            switch migrationState {
+            case .initial: EmptyView()
+            case .chatStopInProgress:
+                chatStopInProgressView()
+            case let .chatStopFailed(reason):
+                chatStopFailedView(reason)
+            case .passphraseNotSet:
+                passphraseNotSetView()
+            case .passphraseConfirmation:
+                PassphraseConfirmationView(migrationState: $migrationState, alert: $alert)
+            case .uploadConfirmation:
+                uploadConfirmationView()
+            case .archiving:
+                archivingView()
+            case let .uploadProgress(uploaded, total, _, archivePath, _):
+                uploadProgressView(uploaded, totalBytes: total, archivePath)
+            case let .uploadFailed(total, archivePath):
+                uploadFailedView(totalBytes: total, archivePath)
+            case let .linkCreation(totalBytes):
+                linkCreationView(totalBytes)
+            case let .linkShown(fileId, link, archivePath, ctrl):
+                linkView(fileId, link, archivePath, ctrl)
+            case .finished:
+                finishedView()
+            }
+        }
+        .modifier(BackButton(label: "Back") {
+            if !backDisabled {
+                dismiss()
+            }
+        })
+        .onChange(of: migrationState) { state in
+            backDisabled = switch migrationState {
+            case .linkCreation: true
+            case .linkShown: true
+            default: false
+            }
+        }
+        .onAppear {
+            if case .initial = migrationState {
+                if m.chatRunning == false {
+                    migrationState = initialRandomDBPassphrase ? .passphraseNotSet : .passphraseConfirmation
+                    chatWasStoppedInitially = true
+                } else {
+                    migrationState = .chatStopInProgress
+                    chatWasStoppedInitially = false
+                    stopChat()
+                }
+            }
+        }
+        .onDisappear {
+            if case .linkShown = migrationState {} else if case .finished = migrationState {} else if !chatWasStoppedInitially {
+                Task {
+                    AppChatState.shared.set(.active)
+                    try? startChat(refreshInvitations: true)
+                }
+            }
+            Task {
+                if case let .uploadProgress(_, _, fileId, _, ctrl) = migrationState, let ctrl {
+                    await cancelUploadedAchive(fileId, ctrl)
+                }
+                chatReceiver?.stop()
+                try? FileManager.default.removeItem(atPath: "\(tempDatabaseUrl.path)_chat.db")
+                try? FileManager.default.removeItem(atPath: "\(tempDatabaseUrl.path)_agent.db")
+                try? FileManager.default.removeItem(at: getMigrationTempFilesDirectory())
+            }
+        }
+        .alert(item: $alert) { alert in
+            switch alert {
+            case let .startChat(title, text):
+                return Alert(
+                    title: Text(title),
+                    message: Text(text),
+                    primaryButton: .destructive(Text("Start chat")) {
+                        startChatAndDismiss()
+                    },
+                    secondaryButton: .cancel()
+                )
+            case let .deleteChat(title, text):
+                return Alert(
+                    title: Text(title),
+                    message: Text(text),
+                    primaryButton: .destructive(Text("Delete")) {
+                        deleteChatAndDismiss()
+                    },
+                    secondaryButton: .cancel()
+                )
+            case let .wrongPassphrase(title, message):
+                return Alert(title: Text(title), message: Text(message))
+            case let .invalidConfirmation(title):
+                return Alert(title: Text(title))
+            case let .keychainError(title):
+                return Alert(title: Text(title))
+            case let .databaseError(title, message):
+                return Alert(title: Text(title), message: Text(message))
+            case let .unknownError(title, message):
+                return Alert(title: Text(title), message: Text(message))
+            case let .error(title, error):
+                return Alert(title: Text(title), message: Text(error))
+            }
+        }
+        .interactiveDismissDisabled(backDisabled)
+    }
+
+    private func chatStopInProgressView() -> some View {
+        ZStack {
+            List {
+                Section {} header: {
+                    Text("Stopping chat")
+                }
+            }
+            progressView()
+        }
+    }
+
+    private func chatStopFailedView(_ reason: String) -> some View {
+        Section {
+            Text(reason)
+            Button(action: stopChat) {
+                settingsRow("stop.fill") {
+                    Text("Stop chat").foregroundColor(.red)
+                }
+            }
+        } header: {
+            Text("Error stopping chat")
+        } footer: {
+            Text("In order to continue, chat should be stopped")
+                .font(.callout)
+        }
+    }
+
+    private func passphraseNotSetView() -> some View {
+        DatabaseEncryptionView(useKeychain: $useKeychain, migration: true)
+            .onChange(of: initialRandomDBPassphrase) { initial in
+                if !initial {
+                    migrationState = .uploadConfirmation
+                }
+            }
+    }
+
+    private func uploadConfirmationView() -> some View {
+        List {
+            Section {
+                Button(action: { migrationState = .archiving }) {
+                    settingsRow("tray.and.arrow.up") {
+                        Text("Archive and upload").foregroundColor(.accentColor)
+                    }
+                }
+            } header: {
+                Text("Confirm upload")
+            } footer: {
+                Text("All your contacts, conversations and files will be archived and uploaded as encrypted file to configured XFTP relays")
+                    .font(.callout)
+            }
+        }
+    }
+
+    private func archivingView() -> some View {
+        ZStack {
+            List {
+                Section {} header: {
+                    Text("Archiving database…")
+                }
+            }
+            progressView()
+        }
+        .onAppear {
+            exportArchive()
+        }
+    }
+
+    private func uploadProgressView(_ uploadedBytes: Int64, totalBytes: Int64, _ archivePath: URL) -> some View {
+        ZStack {
+            List {
+                Section {} header: {
+                    Text("Uploading archive…")
+                }
+            }
+            let ratio = Float(uploadedBytes) / Float(totalBytes)
+            largeProgressView(ratio, "\(Int(ratio * 100))%", "\(ByteCountFormatter.string(fromByteCount: uploadedBytes, countStyle: .binary)) uploaded")
+        }
+        .onAppear {
+            startUploading(totalBytes, archivePath)
+        }
+    }
+
+    private func uploadFailedView(totalBytes: Int64, _ archivePath: URL) -> some View {
+        List {
+            Section {
+                Button(action: {
+                    migrationState = .uploadProgress(uploadedBytes: 0, totalBytes: totalBytes, fileId: 0, archivePath: archivePath, ctrl: nil)
+                }) {
+                    settingsRow("tray.and.arrow.up") {
+                        Text("Repeat upload").foregroundColor(.accentColor)
+                    }
+                }
+            } header: {
+                Text("Upload failed")
+            } footer: {
+                Text("You can give another try")
+                    .font(.callout)
+            }
+        }
+        .onAppear {
+            chatReceiver?.stop()
+            try? FileManager.default.removeItem(atPath: "\(tempDatabaseUrl.path)_chat.db")
+            try? FileManager.default.removeItem(atPath: "\(tempDatabaseUrl.path)_agent.db")
+        }
+    }
+
+    private func linkCreationView(_ totalBytes: Int64) -> some View {
+        ZStack {
+            List {
+                Section {} header: {
+                    Text("Creating archive link…")
+                }
+            }
+            progressView()
+        }
+    }
+
+    private func linkView(_ fileId: Int64, _ link: String, _ archivePath: URL, _ ctrl: chat_ctrl) -> some View {
+        List {
+            Section {
+                Button(action: { cancelMigration(fileId, ctrl) }) {
+                    settingsRow("multiply") {
+                        Text("Cancel migration").foregroundColor(.red)
+                    }
+                }
+                Button(action: { finishMigration(fileId, ctrl) }) {
+                    settingsRow("checkmark") {
+                        Text("Finalize migration").foregroundColor(.accentColor)
+                    }
+                }
+            } footer: {
+                Text("Make sure you made the migration before going forward")
+                    .font(.callout)
+            }
+            Section {
+                SimpleXLinkQRCode(uri: link)
+                    .frame(maxWidth: .infinity)
+                shareLinkButton(link)
+            } header: {
+                Text("Link to uploaded archive")
+            } footer: {
+                Text("Choose Migrate from another device on your new device and scan QR code")
+                    .font(.callout)
+            }
+        }
+    }
+
+    private func finishedView() -> some View {
+        List {
+            Section {
+                Button(action: { alert = .deleteChat() }) {
+                    settingsRow("trash.fill") {
+                        Text("Delete database from this device").foregroundColor(.accentColor)
+                    }
+                }
+                Button(action: { alert = .startChat() }) {
+                    settingsRow("play.fill") {
+                        Text("Start chat").foregroundColor(.red)
+                    }
+                }
+            } header: {
+                Text("Migration complete")
+            } footer: {
+                Text("You should not use the same database on two devices")
+                    .font(.callout)
+            }
+        }
+    }
+
+    private func shareLinkButton(_ link: String) -> some View {
+        Button {
+            showShareSheet(items: [simplexChatLink(link)])
+        } label: {
+            Label("Share link", systemImage: "square.and.arrow.up")
+        }
+    }
+
+    private func largeProgressView(_ value: Float, _ title: String, _ description: LocalizedStringKey) -> some View {
+        ZStack {
+            VStack {
+                Text(description)
+                    .font(.title3)
+                    .hidden()
+
+                Text(title)
+                    .font(.system(size: 60))
+                    .foregroundColor(.accentColor)
+
+                Text(description)
+                    .font(.title3)
+            }
+
+            Circle()
+                .trim(from: 0, to: CGFloat(value))
+                .stroke(
+                    Color.accentColor,
+                    style: StrokeStyle(lineWidth: 30)
+                )
+                .rotationEffect(.degrees(-90))
+                .animation(.linear, value: value)
+                .frame(maxWidth: .infinity)
+                .padding(.horizontal)
+                .padding(.horizontal)
+        }
+        .frame(maxWidth: .infinity)
+    }
+
+    private func stopChat() {
+        Task {
+            do {
+                try await stopChatAsync()
+                await MainActor.run {
+                    migrationState = initialRandomDBPassphraseGroupDefault.get() ? .passphraseNotSet : .passphraseConfirmation
+                }
+            } catch let e {
+                await MainActor.run {
+                    migrationState = .chatStopFailed(reason: e.localizedDescription)
+                }
+            }
+        }
+    }
+
+    private func exportArchive() {
+        Task {
+            do {
+                try? FileManager.default.createDirectory(at: getMigrationTempFilesDirectory(), withIntermediateDirectories: true)
+                let archivePath = try await exportChatArchive(getMigrationTempFilesDirectory())
+                if let attrs = try? FileManager.default.attributesOfItem(atPath: archivePath.path),
+                    let totalBytes = attrs[.size] as? Int64 {
+                    await MainActor.run {
+                        migrationState = .uploadProgress(uploadedBytes: 0, totalBytes: totalBytes, fileId: 0, archivePath: archivePath, ctrl: nil)
+                    }
+                } else {
+                    await MainActor.run {
+                        alert = .error(title: "Exported file doesn't exist")
+                        migrationState = .uploadConfirmation
+                    }
+                }
+            } catch let error {
+                await MainActor.run {
+                    alert = .error(title: "Error exporting chat database", error: responseError(error))
+                    migrationState = .uploadConfirmation
+                }
+            }
+        }
+    }
+
+    private func initTemporaryDatabase() -> (chat_ctrl, User)? {
+        let (status, ctrl) = chatInitTemporaryDatabase(url: tempDatabaseUrl)
+        showErrorOnMigrationIfNeeded(status, $alert)
+        do {
+            if let ctrl, let user = try startChatWithTemporaryDatabase(ctrl: ctrl) {
+                return (ctrl, user)
+            }
+        } catch let error {
+            logger.error("Error while starting chat in temporary database: \(error.localizedDescription)")
+        }
+        return nil
+    }
+
+    private func startUploading(_ totalBytes: Int64, _ archivePath: URL) {
+        Task {
+            guard let ctrlAndUser = initTemporaryDatabase() else {
+                return migrationState = .uploadFailed(totalBytes: totalBytes, archivePath: archivePath)
+            }
+            let (ctrl, user) = ctrlAndUser
+            chatReceiver = MigrationChatReceiver(ctrl: ctrl) { msg in
+                Task {
+                    await TerminalItems.shared.add(.resp(.now, msg))
+                }
+                logger.debug("processReceivedMsg: \(msg.responseType)")
+                await MainActor.run {
+                    switch msg {
+                    case let .sndFileProgressXFTP(_, _, fileTransferMeta, sentSize, totalSize):
+                        if case let .uploadProgress(uploaded, total, _, _, _) = migrationState, uploaded != total {
+                            migrationState = .uploadProgress(uploadedBytes: sentSize, totalBytes: totalSize, fileId: fileTransferMeta.fileId, archivePath: archivePath, ctrl: ctrl)
+                        }
+                    case let .sndFileRedirectStartXFTP(_, fileTransferMeta, _):
+                        DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
+                            migrationState = .linkCreation(totalBytes: fileTransferMeta.fileSize)
+                        }
+                    case let .sndStandaloneFileComplete(_, fileTransferMeta, rcvURIs):
+                        DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
+                            migrationState = .linkShown(fileId: fileTransferMeta.fileId, link: rcvURIs[0], archivePath: archivePath, ctrl: ctrl)
+                        }
+                    default:
+                        logger.debug("unsupported event: \(msg.responseType)")
+                    }
+                }
+            }
+            chatReceiver?.start()
+
+            let (res, error) = await uploadStandaloneFile(user: user, file: CryptoFile.plain(archivePath.lastPathComponent), ctrl: ctrl)
+            guard let res = res else {
+                migrationState = .uploadFailed(totalBytes: totalBytes, archivePath: archivePath)
+                return alert = .error(title: "Error uploading the archive", error: error ?? "")
+            }
+            migrationState = .uploadProgress(uploadedBytes: 0, totalBytes: res.fileSize, fileId: res.fileId, archivePath: archivePath, ctrl: ctrl)
+        }
+    }
+
+    private func cancelUploadedAchive(_ fileId: Int64, _ ctrl: chat_ctrl) async {
+        _ = await apiCancelFile(fileId: fileId, ctrl: ctrl)
+    }
+
+    private func cancelMigration(_ fileId: Int64, _ ctrl: chat_ctrl) {
+        Task {
+            await cancelUploadedAchive(fileId, ctrl)
+            await MainActor.run {
+                if !chatWasStoppedInitially {
+                    startChatAndDismiss()
+                } else {
+                    dismiss()
+                }
+            }
+        }
+    }
+
+    private func finishMigration(_ fileId: Int64, _ ctrl: chat_ctrl) {
+        Task {
+            await cancelUploadedAchive(fileId, ctrl)
+            await MainActor.run {
+                migrationState = .finished
+            }
+        }
+    }
+
+    private func deleteChatAndDismiss() {
+        Task {
+            do {
+                try await deleteChatAsync()
+                m.chatDbChanged = true
+                m.chatInitialized = false
+                showSettings = false
+                DispatchQueue.main.asyncAfter(deadline: .now() + 1) {
+                    resetChatCtrl()
+                    do {
+                        try initializeChat(start: false)
+                        m.chatDbChanged = false
+                        AppChatState.shared.set(.active)
+                    } catch let error {
+                        fatalError("Error starting chat \(responseError(error))")
+                    }
+                }
+                dismiss()
+            } catch let error {
+                alert = .error(title: "Error deleting database", error: responseError(error))
+            }
+        }
+    }
+
+    private func startChatAndDismiss() {
+        Task {
+            AppChatState.shared.set(.active)
+            try? startChat(refreshInvitations: true)
+            dismiss()
+        }
+    }
+
+    private static func urlForTemporaryDatabase() -> URL {
+        URL(fileURLWithPath: generateNewFileName(getMigrationTempFilesDirectory().path + "/" + "migration", "db", fullPath: true))
+    }
+}
+
+private struct PassphraseConfirmationView: View {
+    @Binding var migrationState: MigrationState
+    @State private var useKeychain = storeDBPassphraseGroupDefault.get()
+    @State private var currentKey: String = ""
+    @State private var verifyingPassphrase: Bool = false
+    @Binding var alert: MigrateToAnotherDeviceViewAlert?
+
+    var body: some View {
+        ZStack {
+            List {
+                chatStoppedView()
+                Section {
+                    PassphraseField(key: $currentKey, placeholder: "Current passphrase…", valid: validKey(currentKey))
+                    Button(action: {
+                        verifyingPassphrase = true
+                        hideKeyboard()
+                        Task {
+                            await verifyDatabasePassphrase(currentKey)
+                            verifyingPassphrase = false
+                        }
+                    }) {
+                        settingsRow(useKeychain ? "key" : "lock", color: .secondary) {
+                            Text("Verify passphrase")
+                        }
+                    }
+                } header: {
+                    Text("Verify database passphrase to migrate it")
+                } footer: {
+                    Text("Make sure you remember database passphrase before migrating")
+                        .font(.callout)
+                }
+            }
+            if verifyingPassphrase {
+                progressView()
+            }
+        }
+    }
+
+    private func verifyDatabasePassphrase(_ dbKey: String) async {
+        do {
+            try await testStorageEncryption(key: dbKey)
+            migrationState = .uploadConfirmation
+        } catch {
+            showErrorOnMigrationIfNeeded(.errorNotADatabase(dbFile: ""), $alert)
+        }
+    }
+}
+
+private func showErrorOnMigrationIfNeeded(_ status: DBMigrationResult, _ alert: Binding<MigrateToAnotherDeviceViewAlert?>) {
+    switch status {
+    case .invalidConfirmation:
+        alert.wrappedValue = .invalidConfirmation()
+    case .errorNotADatabase:
+        alert.wrappedValue = .wrongPassphrase()
+    case .errorKeychain:
+        alert.wrappedValue = .keychainError()
+    case let .errorSQL(_, error):
+        alert.wrappedValue = .databaseError(message: error)
+    case let .unknown(error):
+        alert.wrappedValue = .unknownError(message: error)
+    case .errorMigration: ()
+    case .ok: ()
+    }
+}
+
+private func progressView() -> some View {
+    VStack {
+        ProgressView().scaleEffect(2)
+    }
+    .frame(maxWidth: .infinity, maxHeight: .infinity )
+}
+
+func chatStoppedView() -> some View {
+    settingsRow("exclamationmark.octagon.fill", color: .red) {
+        Text("Chat is stopped")
+    }
+}
+
+private class MigrationChatReceiver {
+    let ctrl: chat_ctrl
+    let processReceivedMsg: (ChatResponse) async -> Void
+    private var receiveLoop: Task<Void, Never>?
+    private var receiveMessages = true
+
+    init(ctrl: chat_ctrl, _ processReceivedMsg: @escaping (ChatResponse) async -> Void) {
+        self.ctrl = ctrl
+        self.processReceivedMsg = processReceivedMsg
+    }
+
+    func start() {
+        logger.debug("MigrationChatReceiver.start")
+        receiveMessages = true
+        if receiveLoop != nil { return }
+        receiveLoop = Task { await receiveMsgLoop() }
+    }
+
+    func receiveMsgLoop() async {
+        // TODO use function that has timeout
+        if let msg = await chatRecvMsg(ctrl) {
+            await processReceivedMsg(msg)
+        }
+        if self.receiveMessages {
+            _ = try? await Task.sleep(nanoseconds: 7_500_000)
+            await receiveMsgLoop()
+        }
+    }
+
+    func stop() {
+        logger.debug("MigrationChatReceiver.stop")
+        receiveMessages = false
+        receiveLoop?.cancel()
+        receiveLoop = nil
+        chat_close_store(ctrl)
+    }
+}
+
+struct MigrateToAnotherDevice_Previews: PreviewProvider {
+    static var previews: some View {
+        MigrateToAnotherDevice(showSettings: Binding.constant(true))
+    }
+}

apps/ios/Shared/Views/NewChat/NewChatView.swift

@@ -86,7 +86,7 @@ struct NewChatView: View {
                         }
                 }
                 if case .connect = selection {
-                    ConnectView(showQRCodeScanner: showQRCodeScanner, pastedLink: $pastedLink, alert: $alert)
+                    ConnectView(showQRCodeScanner: $showQRCodeScanner, pastedLink: $pastedLink, alert: $alert)
                         .transition(.move(edge: .trailing))
                 }
             }
@@ -284,8 +284,7 @@ private struct InviteView: View {
 
 private struct ConnectView: View {
     @Environment(\.dismiss) var dismiss: DismissAction
-    @State var showQRCodeScanner = false
-    @State private var cameraAuthorizationStatus: AVAuthorizationStatus?
+    @Binding var showQRCodeScanner: Bool
     @Binding var pastedLink: String
     @Binding var alert: NewChatViewAlert?
     @State private var sheet: PlanAndConnectActionSheet?
@@ -295,32 +294,13 @@ private struct ConnectView: View {
             Section("Paste the link you received") {
                 pasteLinkView()
             }
-
-            scanCodeView()
+            Section("Or scan QR code") {
+                ScannerInView(showQRCodeScanner: $showQRCodeScanner, processQRCode: processQRCode)
+            }
         }
         .actionSheet(item: $sheet) { s in
             planAndConnectActionSheet(s, dismiss: true, cleanup: { pastedLink = "" })
         }
-        .onAppear {
-            let status = AVCaptureDevice.authorizationStatus(for: .video)
-            cameraAuthorizationStatus = status
-            if showQRCodeScanner {
-                switch status {
-                case .notDetermined: askCameraAuthorization()
-                case .restricted: showQRCodeScanner = false
-                case .denied: showQRCodeScanner = false
-                case .authorized: ()
-                @unknown default: askCameraAuthorization()
-                }
-            }
-        }
-    }
-
-    func askCameraAuthorization(_ cb: (() -> Void)? = nil) {
-        AVCaptureDevice.requestAccess(for: .video) { allowed in
-            cameraAuthorizationStatus = AVCaptureDevice.authorizationStatus(for: .video)
-            if allowed { cb?() }
-        }
     }
 
     @ViewBuilder private func pasteLinkView() -> some View {
@@ -351,8 +331,45 @@ private struct ConnectView: View {
         }
     }
 
-    private func scanCodeView() -> some View {
-        Section("Or scan QR code") {
+    private func processQRCode(_ resp: Result<ScanResult, ScanError>) {
+        switch resp {
+        case let .success(r):
+            let link = r.string
+            if strIsSimplexLink(r.string) {
+                connect(link)
+            } else {
+                alert = .newChatSomeAlert(alert: .someAlert(
+                    alert: mkAlert(title: "Invalid QR code", message: "The code you scanned is not a SimpleX link QR code."),
+                    id: "processQRCode: code is not a SimpleX link"
+                ))
+            }
+        case let .failure(e):
+            logger.error("processQRCode QR code error: \(e.localizedDescription)")
+            alert = .newChatSomeAlert(alert: .someAlert(
+                alert: mkAlert(title: "Invalid QR code", message: "Error scanning code: \(e.localizedDescription)"),
+                id: "processQRCode: failure"
+            ))
+        }
+    }
+
+    private func connect(_ link: String) {
+        planAndConnect(
+            link,
+            showAlert: { alert = .planAndConnectAlert(alert: $0) },
+            showActionSheet: { sheet = $0 },
+            dismiss: true,
+            incognito: nil
+        )
+    }
+}
+
+struct ScannerInView: View {
+    @Binding var showQRCodeScanner: Bool
+    let processQRCode: (_ resp: Result<ScanResult, ScanError>) -> Void
+    @State private var cameraAuthorizationStatus: AVAuthorizationStatus?
+
+    var body: some View {
+        Group {
             if showQRCodeScanner, case .authorized = cameraAuthorizationStatus {
                 CodeScannerView(codeTypes: [.qr], scanMode: .continuous, completion: processQRCode)
                     .aspectRatio(1, contentMode: .fit)
@@ -396,37 +413,26 @@ private struct ConnectView: View {
                 .disabled(cameraAuthorizationStatus == .restricted)
             }
         }
-    }
-
-    private func processQRCode(_ resp: Result<ScanResult, ScanError>) {
-        switch resp {
-        case let .success(r):
-            let link = r.string
-            if strIsSimplexLink(r.string) {
-                connect(link)
-            } else {
-                alert = .newChatSomeAlert(alert: .someAlert(
-                    alert: mkAlert(title: "Invalid QR code", message: "The code you scanned is not a SimpleX link QR code."),
-                    id: "processQRCode: code is not a SimpleX link"
-                ))
+        .onAppear {
+            let status = AVCaptureDevice.authorizationStatus(for: .video)
+            cameraAuthorizationStatus = status
+            if showQRCodeScanner {
+                switch status {
+                case .notDetermined: askCameraAuthorization()
+                case .restricted: showQRCodeScanner = false
+                case .denied: showQRCodeScanner = false
+                case .authorized: ()
+                @unknown default: askCameraAuthorization()
+                }
             }
-        case let .failure(e):
-            logger.error("processQRCode QR code error: \(e.localizedDescription)")
-            alert = .newChatSomeAlert(alert: .someAlert(
-                alert: mkAlert(title: "Invalid QR code", message: "Error scanning code: \(e.localizedDescription)"),
-                id: "processQRCode: failure"
-            ))
         }
     }
 
-    private func connect(_ link: String) {
-        planAndConnect(
-            link,
-            showAlert: { alert = .planAndConnectAlert(alert: $0) },
-            showActionSheet: { sheet = $0 },
-            dismiss: true,
-            incognito: nil
-        )
+    func askCameraAuthorization(_ cb: (() -> Void)? = nil) {
+        AVCaptureDevice.requestAccess(for: .video) { allowed in
+            cameraAuthorizationStatus = AVCaptureDevice.authorizationStatus(for: .video)
+            if allowed { cb?() }
+        }
     }
 }
 

apps/ios/Shared/Views/Onboarding/HowItWorks.swift

@@ -37,7 +37,7 @@ struct HowItWorks: View {
             Spacer()
 
             if onboarding {
-                OnboardingActionButton()
+                OnboardingActionButton(hideMigrate: true)
                     .padding(.bottom, 8)
             }
         }

apps/ios/Shared/Views/Onboarding/SimpleXInfo.swift

@@ -42,7 +42,7 @@ struct SimpleXInfo: View {
 
                     Spacer()
                     if onboarding {
-                        OnboardingActionButton()
+                        OnboardingActionButton(hideMigrate: false)
                         Spacer()
                     }
 
@@ -87,10 +87,28 @@ struct SimpleXInfo: View {
 
 struct OnboardingActionButton: View {
     @EnvironmentObject var m: ChatModel
+    let hideMigrate: Bool
+    @State private var migrateFromAnotherDevice: Bool = false
 
     var body: some View {
         if m.currentUser == nil {
             actionButton("Create your profile", onboarding: .step2_CreateProfile)
+
+            if !hideMigrate {
+                actionButton("Migrate from another device") {
+                    migrateFromAnotherDevice = true
+                }
+                .sheet(isPresented: $migrateFromAnotherDevice) {
+                    VStack(alignment: .leading) {
+                        Text("Migrate here")
+                            .font(.largeTitle)
+                            .padding([.leading, .top, .trailing])
+                            .padding(.top)
+                        MigrateFromAnotherDevice()
+                    }
+                    .background(Color(uiColor: .tertiarySystemGroupedBackground))
+                }
+            }
         } else {
             actionButton("Make a private connection", onboarding: .onboardingComplete)
         }
@@ -111,6 +129,21 @@ struct OnboardingActionButton: View {
         .frame(maxWidth: .infinity)
         .padding(.bottom)
     }
+
+    private func actionButton(_ label: LocalizedStringKey, action: @escaping () -> Void) -> some View {
+        Button {
+            withAnimation {
+                action()
+            }
+        } label: {
+            HStack {
+                Text(label).font(.title2)
+                Image(systemName: "greaterthan")
+            }
+        }
+        .frame(maxWidth: .infinity)
+        .padding(.bottom)
+    }
 }
 
 struct SimpleXInfo_Previews: PreviewProvider {

apps/ios/Shared/Views/UserSettings/SettingsView.swift

@@ -163,48 +163,57 @@ struct SettingsView: View {
         NavigationView {
             List {
                 Section("You") {
-                    if let user = user {
+                    Group {
+                        if let user = user {
+                            NavigationLink {
+                                UserProfile()
+                                    .navigationTitle("Your current profile")
+                            } label: {
+                                ProfilePreview(profileOf: user)
+                                    .padding(.leading, -8)
+                            }
+                        }
+
                         NavigationLink {
-                            UserProfile()
-                                .navigationTitle("Your current profile")
+                            UserProfilesView(showSettings: $showSettings)
                         } label: {
-                            ProfilePreview(profileOf: user)
-                                .padding(.leading, -8)
+                            settingsRow("person.crop.rectangle.stack") { Text("Your chat profiles") }
+                        }
+
+
+                        if let user = user {
+                            NavigationLink {
+                                UserAddressView(shareViaProfile: user.addressShared)
+                                    .navigationTitle("SimpleX address")
+                                    .navigationBarTitleDisplayMode(.large)
+                            } label: {
+                                settingsRow("qrcode") { Text("Your SimpleX address") }
+                            }
+
+                            NavigationLink {
+                                PreferencesView(profile: user.profile, preferences: user.fullPreferences, currentPreferences: user.fullPreferences)
+                                    .navigationTitle("Your preferences")
+                            } label: {
+                                settingsRow("switch.2") { Text("Chat preferences") }
+                            }
+                        }
+
+                        NavigationLink {
+                            ConnectDesktopView(viaSettings: true)
+                        } label: {
+                            settingsRow("desktopcomputer") { Text("Use from desktop") }
                         }
                     }
+                    .disabled(chatModel.chatRunning != true)
 
                     NavigationLink {
-                        UserProfilesView(showSettings: $showSettings)
+                        MigrateToAnotherDevice(showSettings: $showSettings)
+                            .navigationTitle("Migrate device")
+                            .navigationBarTitleDisplayMode(.large)
                     } label: {
-                        settingsRow("person.crop.rectangle.stack") { Text("Your chat profiles") }
-                    }
-
-
-                    if let user = user {
-                        NavigationLink {
-                            UserAddressView(shareViaProfile: user.addressShared)
-                                .navigationTitle("SimpleX address")
-                                .navigationBarTitleDisplayMode(.large)
-                        } label: {
-                            settingsRow("qrcode") { Text("Your SimpleX address") }
-                        }
-
-                        NavigationLink {
-                            PreferencesView(profile: user.profile, preferences: user.fullPreferences, currentPreferences: user.fullPreferences)
-                                .navigationTitle("Your preferences")
-                        } label: {
-                            settingsRow("switch.2") { Text("Chat preferences") }
-                        }
-                    }
-
-                    NavigationLink {
-                        ConnectDesktopView(viaSettings: true)
-                    } label: {
-                        settingsRow("desktopcomputer") { Text("Use from desktop") }
+                        settingsRow("tray.and.arrow.up") { Text("Migrate to another device") }
                     }
                 }
-                .disabled(chatModel.chatRunning != true)
-                
                 Section("Settings") {
                     NavigationLink {
                         NotificationsView()

apps/ios/SimpleX NSE/NotificationService.swift

@@ -640,7 +640,9 @@ func receivedMsgNtf(_ res: ChatResponse) async -> (String, NSENotification)? {
         cleanupDirectFile(aChatItem)
         return nil
     case let .sndFileRcvCancelled(_, aChatItem, _):
-        cleanupDirectFile(aChatItem)
+        if let aChatItem = aChatItem {
+            cleanupDirectFile(aChatItem)
+        }
         return nil
     case let .sndFileCompleteXFTP(_, aChatItem, _):
         cleanupFile(aChatItem)

apps/ios/SimpleX.xcodeproj/project.pbxproj

@@ -185,6 +185,8 @@
 		64E972072881BB22008DBC02 /* CIGroupInvitationView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 64E972062881BB22008DBC02 /* CIGroupInvitationView.swift */; };
 		64F1CC3B28B39D8600CD1FB1 /* IncognitoHelp.swift in Sources */ = {isa = PBXBuildFile; fileRef = 64F1CC3A28B39D8600CD1FB1 /* IncognitoHelp.swift */; };
 		8C05382E2B39887E006436DC /* VideoUtils.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8C05382D2B39887E006436DC /* VideoUtils.swift */; };
+		8C7D949A2B88952700B7B9E1 /* MigrateFromAnotherDevice.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8C7D94992B88952700B7B9E1 /* MigrateFromAnotherDevice.swift */; };
+		8C7DF3202B7CDB0A00C886D0 /* MigrateToAnotherDevice.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8C7DF31F2B7CDB0A00C886D0 /* MigrateToAnotherDevice.swift */; };
 		D7197A1829AE89660055C05A /* WebRTC in Frameworks */ = {isa = PBXBuildFile; productRef = D7197A1729AE89660055C05A /* WebRTC */; };
 		D72A9088294BD7A70047C86D /* NativeTextEditor.swift in Sources */ = {isa = PBXBuildFile; fileRef = D72A9087294BD7A70047C86D /* NativeTextEditor.swift */; };
 		D741547829AF89AF0022400A /* StoreKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = D741547729AF89AF0022400A /* StoreKit.framework */; };
@@ -473,6 +475,8 @@
 		64E972062881BB22008DBC02 /* CIGroupInvitationView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CIGroupInvitationView.swift; sourceTree = "<group>"; };
 		64F1CC3A28B39D8600CD1FB1 /* IncognitoHelp.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = IncognitoHelp.swift; sourceTree = "<group>"; };
 		8C05382D2B39887E006436DC /* VideoUtils.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = VideoUtils.swift; sourceTree = "<group>"; };
+		8C7D94992B88952700B7B9E1 /* MigrateFromAnotherDevice.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MigrateFromAnotherDevice.swift; sourceTree = "<group>"; };
+		8C7DF31F2B7CDB0A00C886D0 /* MigrateToAnotherDevice.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MigrateToAnotherDevice.swift; sourceTree = "<group>"; };
 		D72A9087294BD7A70047C86D /* NativeTextEditor.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NativeTextEditor.swift; sourceTree = "<group>"; };
 		D741547729AF89AF0022400A /* StoreKit.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = StoreKit.framework; path = Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS16.1.sdk/System/Library/Frameworks/StoreKit.framework; sourceTree = DEVELOPER_DIR; };
 		D741547929AF90B00022400A /* PushKit.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = PushKit.framework; path = Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS16.1.sdk/System/Library/Frameworks/PushKit.framework; sourceTree = DEVELOPER_DIR; };
@@ -553,6 +557,7 @@
 				5CB924DD27A8622200ACCCDD /* NewChat */,
 				5CFA59C22860B04D00863A68 /* Database */,
 				5CB634AB29E46CDB0066AD6B /* LocalAuth */,
+				8C7D94982B8894D300B7B9E1 /* Migration */,
 				5CA8D01B2AD9B076001FD661 /* RemoteAccess */,
 				5CB924DF27A8678B00ACCCDD /* UserSettings */,
 				5C2E261127A30FEA00F70299 /* TerminalView.swift */,
@@ -893,6 +898,15 @@
 			path = Group;
 			sourceTree = "<group>";
 		};
+		8C7D94982B8894D300B7B9E1 /* Migration */ = {
+			isa = PBXGroup;
+			children = (
+				8C7DF31F2B7CDB0A00C886D0 /* MigrateToAnotherDevice.swift */,
+				8C7D94992B88952700B7B9E1 /* MigrateFromAnotherDevice.swift */,
+			);
+			path = Migration;
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */
 
 /* Begin PBXHeadersBuildPhase section */
@@ -1124,6 +1138,7 @@
 				5CBD285A295711D700EC2CF4 /* ImageUtils.swift in Sources */,
 				6419EC562AB8BC8B004A607A /* ContextInvitingContactMemberView.swift in Sources */,
 				5CE4407927ADB701007B033A /* EmojiItemView.swift in Sources */,
+				8C7D949A2B88952700B7B9E1 /* MigrateFromAnotherDevice.swift in Sources */,
 				5C3F1D562842B68D00EC8A82 /* IntegrityErrorItemView.swift in Sources */,
 				5C029EAA283942EA004A9677 /* CallController.swift in Sources */,
 				5CBE6C142944CC12002D9531 /* ScanCodeView.swift in Sources */,
@@ -1220,6 +1235,7 @@
 				5CB0BA92282713FD00B3292C /* CreateProfile.swift in Sources */,
 				5C5F2B7027EBC704006A9D5F /* ProfileImage.swift in Sources */,
 				5C9329412929248A0090FFF9 /* ScanProtocolServer.swift in Sources */,
+				8C7DF3202B7CDB0A00C886D0 /* MigrateToAnotherDevice.swift in Sources */,
 				64AA1C6C27F3537400AC7277 /* DeletedItemView.swift in Sources */,
 				5C93293F2928E0FD0090FFF9 /* AudioRecPlay.swift in Sources */,
 				5C029EA82837DBB3004A9677 /* CICallItemView.swift in Sources */,

apps/ios/SimpleXChat/API.swift

@@ -54,6 +54,18 @@ public func chatMigrateInit(_ useKey: String? = nil, confirmMigrations: Migratio
     return result
 }
 
+public func chatInitTemporaryDatabase(url: URL, key: String? = nil) -> (DBMigrationResult, chat_ctrl?) {
+    let dbPath = url.path
+    let dbKey = key ?? randomDatabasePassword()
+    logger.debug("chatInitTemporaryDatabase path: \(dbPath)")
+    var temporaryController: chat_ctrl? = nil
+    var cPath = dbPath.cString(using: .utf8)!
+    var cKey = dbKey.cString(using: .utf8)!
+    var cConfirm = MigrationConfirmation.error.rawValue.cString(using: .utf8)!
+    let cjson = chat_migrate_init_key(&cPath, &cKey, 1, &cConfirm, 0, &temporaryController)!
+    return (dbMigrationResult(fromCString(cjson)), temporaryController)
+}
+
 public func chatCloseStore() {
     let err = fromCString(chat_close_store(getChatCtrl()))
     if err != "" {
@@ -73,17 +85,22 @@ public func resetChatCtrl() {
     migrationResult = nil
 }
 
-public func sendSimpleXCmd(_ cmd: ChatCommand) -> ChatResponse {
+public func applyChatCtrl(ctrl: chat_ctrl?, result: (Bool, DBMigrationResult)) {
+    chatController = ctrl
+    migrationResult = result
+}
+
+public func sendSimpleXCmd(_ cmd: ChatCommand, _ ctrl: chat_ctrl? = nil) -> ChatResponse {
     var c = cmd.cmdString.cString(using: .utf8)!
-    let cjson  = chat_send_cmd(getChatCtrl(), &c)!
+    let cjson  = chat_send_cmd(ctrl ?? getChatCtrl(), &c)!
     return chatResponse(fromCString(cjson))
 }
 
 // in microseconds
 let MESSAGE_TIMEOUT: Int32 = 15_000_000
 
-public func recvSimpleXMsg() -> ChatResponse? {
-    if let cjson = chat_recv_msg_wait(getChatCtrl(), MESSAGE_TIMEOUT) {
+public func recvSimpleXMsg(_ ctrl: chat_ctrl? = nil) -> ChatResponse? {
+    if let cjson = chat_recv_msg_wait(ctrl ?? getChatCtrl(), MESSAGE_TIMEOUT) {
         let s = fromCString(cjson)
         return s == "" ? nil : chatResponse(s)
     }

apps/ios/SimpleXChat/APITypes.swift

@@ -36,6 +36,7 @@ public enum ChatCommand {
     case apiImportArchive(config: ArchiveConfig)
     case apiDeleteStorage
     case apiStorageEncryption(config: DBEncryptionConfig)
+    case testStorageEncryption(key: String)
     case apiGetChats(userId: Int64)
     case apiGetChat(type: ChatType, id: Int64, pagination: ChatPagination, search: String)
     case apiGetChatItemInfo(type: ChatType, id: Int64, itemId: Int64)
@@ -130,6 +131,8 @@ public enum ChatCommand {
     case listRemoteCtrls
     case stopRemoteCtrl
     case deleteRemoteCtrl(remoteCtrlId: Int64)
+    case apiUploadStandaloneFile(userId: Int64, file: CryptoFile)
+    case apiDownloadStandaloneFile(userId: Int64, url: String, file: CryptoFile)
     // misc
     case showVersion
     case string(String)
@@ -166,6 +169,7 @@ public enum ChatCommand {
             case let .apiImportArchive(cfg): return "/_db import \(encodeJSON(cfg))"
             case .apiDeleteStorage: return "/_db delete"
             case let .apiStorageEncryption(cfg): return "/_db encryption \(encodeJSON(cfg))"
+            case let .testStorageEncryption(key): return "/db test key \(key)"
             case let .apiGetChats(userId): return "/_get chats \(userId) pcc=on"
             case let .apiGetChat(type, id, pagination, search): return "/_get chat \(ref(type, id)) \(pagination.cmdString)" +
                 (search == "" ? "" : " search=\(search)")
@@ -278,6 +282,8 @@ public enum ChatCommand {
             case .listRemoteCtrls: return "/list remote ctrls"
             case .stopRemoteCtrl: return "/stop remote ctrl"
             case let .deleteRemoteCtrl(rcId): return "/delete remote ctrl \(rcId)"
+            case let .apiUploadStandaloneFile(userId, file): return "/_upload \(userId) \(file.filePath)"
+            case let .apiDownloadStandaloneFile(userId, link, file): return "/_download \(userId) \(link) \(file.filePath)"
             case .showVersion: return "/version"
             case let .string(str): return str
             }
@@ -310,6 +316,7 @@ public enum ChatCommand {
             case .apiImportArchive: return "apiImportArchive"
             case .apiDeleteStorage: return "apiDeleteStorage"
             case .apiStorageEncryption: return "apiStorageEncryption"
+            case .testStorageEncryption: return "testStorageEncryption"
             case .apiGetChats: return "apiGetChats"
             case .apiGetChat: return "apiGetChat"
             case .apiGetChatItemInfo: return "apiGetChatItemInfo"
@@ -402,6 +409,8 @@ public enum ChatCommand {
             case .listRemoteCtrls: return "listRemoteCtrls"
             case .stopRemoteCtrl: return "stopRemoteCtrl"
             case .deleteRemoteCtrl: return "deleteRemoteCtrl"
+            case .apiUploadStandaloneFile: return "apiUploadStandaloneFile"
+            case .apiDownloadStandaloneFile: return "apiDownloadStandaloneFile"
             case .showVersion: return "showVersion"
             case .string: return "console command"
             }
@@ -436,6 +445,8 @@ public enum ChatCommand {
             return .apiUnhideUser(userId: userId, viewPwd: obfuscate(viewPwd))
         case let .apiDeleteUser(userId, delSMPQueues, viewPwd):
             return .apiDeleteUser(userId: userId, delSMPQueues: delSMPQueues, viewPwd: obfuscate(viewPwd))
+        case let .testStorageEncryption(key):
+            return .testStorageEncryption(key: obfuscate(key))
         default: return self
         }
     }
@@ -584,20 +595,27 @@ public enum ChatResponse: Decodable, Error {
     // receiving file events
     case rcvFileAccepted(user: UserRef, chatItem: AChatItem)
     case rcvFileAcceptedSndCancelled(user: UserRef, rcvFileTransfer: RcvFileTransfer)
-    case rcvFileStart(user: UserRef, chatItem: AChatItem)
-    case rcvFileProgressXFTP(user: UserRef, chatItem: AChatItem, receivedSize: Int64, totalSize: Int64)
+    case rcvStandaloneFileCreated(user: UserRef, rcvFileTransfer: RcvFileTransfer)
+    case rcvFileStart(user: UserRef, chatItem: AChatItem) // send by chats
+    case rcvFileProgressXFTP(user: UserRef, chatItem_: AChatItem?, receivedSize: Int64, totalSize: Int64, rcvFileTransfer: RcvFileTransfer)
     case rcvFileComplete(user: UserRef, chatItem: AChatItem)
-    case rcvFileCancelled(user: UserRef, chatItem: AChatItem, rcvFileTransfer: RcvFileTransfer)
+    case rcvStandaloneFileComplete(user: UserRef, targetPath: String, rcvFileTransfer: RcvFileTransfer)
+    case rcvFileCancelled(user: UserRef, chatItem_: AChatItem?, rcvFileTransfer: RcvFileTransfer)
     case rcvFileSndCancelled(user: UserRef, chatItem: AChatItem, rcvFileTransfer: RcvFileTransfer)
-    case rcvFileError(user: UserRef, chatItem: AChatItem)
+    case rcvFileError(user: UserRef, chatItem_: AChatItem?, rcvFileTransfer: RcvFileTransfer)
     // sending file events
     case sndFileStart(user: UserRef, chatItem: AChatItem, sndFileTransfer: SndFileTransfer)
     case sndFileComplete(user: UserRef, chatItem: AChatItem, sndFileTransfer: SndFileTransfer)
-    case sndFileCancelled(user: UserRef, chatItem: AChatItem, fileTransferMeta: FileTransferMeta, sndFileTransfers: [SndFileTransfer])
-    case sndFileRcvCancelled(user: UserRef, chatItem: AChatItem, sndFileTransfer: SndFileTransfer)
-    case sndFileProgressXFTP(user: UserRef, chatItem: AChatItem, fileTransferMeta: FileTransferMeta, sentSize: Int64, totalSize: Int64)
+    case sndFileRcvCancelled(user: UserRef, chatItem_: AChatItem?, sndFileTransfer: SndFileTransfer)
+    case sndFileCancelled(user: UserRef, chatItem_: AChatItem?, fileTransferMeta: FileTransferMeta, sndFileTransfers: [SndFileTransfer])
+    case sndStandaloneFileCreated(user: UserRef, fileTransferMeta: FileTransferMeta) // returned by _upload
+    case sndFileStartXFTP(user: UserRef, chatItem: AChatItem, fileTransferMeta: FileTransferMeta) // not used
+    case sndFileProgressXFTP(user: UserRef, chatItem_: AChatItem?, fileTransferMeta: FileTransferMeta, sentSize: Int64, totalSize: Int64)
+    case sndFileRedirectStartXFTP(user: UserRef, fileTransferMeta: FileTransferMeta, redirectMeta: FileTransferMeta)
     case sndFileCompleteXFTP(user: UserRef, chatItem: AChatItem, fileTransferMeta: FileTransferMeta)
-    case sndFileError(user: UserRef, chatItem: AChatItem)
+    case sndStandaloneFileComplete(user: UserRef, fileTransferMeta: FileTransferMeta, rcvURIs: [String])
+    case sndFileCancelledXFTP(user: UserRef, chatItem_: AChatItem?, fileTransferMeta: FileTransferMeta)
+    case sndFileError(user: UserRef, chatItem_: AChatItem?, fileTransferMeta: FileTransferMeta)
     // call events
     case callInvitation(callInvitation: RcvCallInvitation)
     case callOffer(user: UserRef, contact: Contact, callType: CallType, offer: WebRTCSession, sharedKey: String?, askConfirmation: Bool)
@@ -735,18 +753,25 @@ public enum ChatResponse: Decodable, Error {
             case .newMemberContactReceivedInv: return "newMemberContactReceivedInv"
             case .rcvFileAccepted: return "rcvFileAccepted"
             case .rcvFileAcceptedSndCancelled: return "rcvFileAcceptedSndCancelled"
+            case .rcvStandaloneFileCreated: return "rcvStandaloneFileCreated"
             case .rcvFileStart: return "rcvFileStart"
             case .rcvFileProgressXFTP: return "rcvFileProgressXFTP"
             case .rcvFileComplete: return "rcvFileComplete"
+            case .rcvStandaloneFileComplete: return "rcvStandaloneFileComplete"
             case .rcvFileCancelled: return "rcvFileCancelled"
             case .rcvFileSndCancelled: return "rcvFileSndCancelled"
             case .rcvFileError: return "rcvFileError"
             case .sndFileStart: return "sndFileStart"
             case .sndFileComplete: return "sndFileComplete"
             case .sndFileCancelled: return "sndFileCancelled"
-            case .sndFileRcvCancelled: return "sndFileRcvCancelled"
+            case .sndStandaloneFileCreated: return "sndStandaloneFileCreated"
+            case .sndFileStartXFTP: return "sndFileStartXFTP"
             case .sndFileProgressXFTP: return "sndFileProgressXFTP"
+            case .sndFileRedirectStartXFTP: return "sndFileRedirectStartXFTP"
+            case .sndFileRcvCancelled: return "sndFileRcvCancelled"
             case .sndFileCompleteXFTP: return "sndFileCompleteXFTP"
+            case .sndStandaloneFileComplete: return "sndStandaloneFileComplete"
+            case .sndFileCancelledXFTP: return "sndFileCancelledXFTP"
             case .sndFileError: return "sndFileError"
             case .callInvitation: return "callInvitation"
             case .callOffer: return "callOffer"
@@ -885,19 +910,26 @@ public enum ChatResponse: Decodable, Error {
             case let .newMemberContactReceivedInv(u, contact, groupInfo, member): return withUser(u, "contact: \(contact)\ngroupInfo: \(groupInfo)\nmember: \(member)")
             case let .rcvFileAccepted(u, chatItem): return withUser(u, String(describing: chatItem))
             case .rcvFileAcceptedSndCancelled: return noDetails
+            case .rcvStandaloneFileCreated: return noDetails
             case let .rcvFileStart(u, chatItem): return withUser(u, String(describing: chatItem))
-            case let .rcvFileProgressXFTP(u, chatItem, receivedSize, totalSize): return withUser(u, "chatItem: \(String(describing: chatItem))\nreceivedSize: \(receivedSize)\ntotalSize: \(totalSize)")
+            case let .rcvFileProgressXFTP(u, chatItem, receivedSize, totalSize, _): return withUser(u, "chatItem: \(String(describing: chatItem))\nreceivedSize: \(receivedSize)\ntotalSize: \(totalSize)")
+            case let .rcvStandaloneFileComplete(u, targetPath, _): return withUser(u, targetPath)
             case let .rcvFileComplete(u, chatItem): return withUser(u, String(describing: chatItem))
             case let .rcvFileCancelled(u, chatItem, _): return withUser(u, String(describing: chatItem))
             case let .rcvFileSndCancelled(u, chatItem, _): return withUser(u, String(describing: chatItem))
-            case let .rcvFileError(u, chatItem): return withUser(u, String(describing: chatItem))
+            case let .rcvFileError(u, chatItem, _): return withUser(u, String(describing: chatItem))
             case let .sndFileStart(u, chatItem, _): return withUser(u, String(describing: chatItem))
             case let .sndFileComplete(u, chatItem, _): return withUser(u, String(describing: chatItem))
             case let .sndFileCancelled(u, chatItem, _, _): return withUser(u, String(describing: chatItem))
+            case .sndStandaloneFileCreated: return noDetails
+            case let .sndFileStartXFTP(u, chatItem, _): return withUser(u, String(describing: chatItem))
             case let .sndFileRcvCancelled(u, chatItem, _): return withUser(u, String(describing: chatItem))
             case let .sndFileProgressXFTP(u, chatItem, _, sentSize, totalSize): return withUser(u, "chatItem: \(String(describing: chatItem))\nsentSize: \(sentSize)\ntotalSize: \(totalSize)")
+            case let .sndFileRedirectStartXFTP(u, _, redirectMeta): return withUser(u, String(describing: redirectMeta))
             case let .sndFileCompleteXFTP(u, chatItem, _): return withUser(u, String(describing: chatItem))
-            case let .sndFileError(u, chatItem): return withUser(u, String(describing: chatItem))
+            case let .sndStandaloneFileComplete(u, _, rcvURIs): return withUser(u, String(rcvURIs.count))
+            case let .sndFileCancelledXFTP(u, chatItem, _): return withUser(u, String(describing: chatItem))
+            case let .sndFileError(u, chatItem, _): return withUser(u, String(describing: chatItem))
             case let .callInvitation(inv): return String(describing: inv)
             case let .callOffer(u, contact, callType, offer, sharedKey, askConfirmation): return withUser(u, "contact: \(contact.id)\ncallType: \(String(describing: callType))\nsharedKey: \(sharedKey ?? "")\naskConfirmation: \(askConfirmation)\noffer: \(String(describing: offer))")
             case let .callAnswer(u, contact, answer): return withUser(u, "contact: \(contact.id)\nanswer: \(String(describing: answer))")
@@ -1721,6 +1753,7 @@ public enum StoreError: Decodable {
     case fileIdNotFoundBySharedMsgId(sharedMsgId: String)
     case sndFileNotFoundXFTP(agentSndFileId: String)
     case rcvFileNotFoundXFTP(agentRcvFileId: String)
+    case extraFileDescrNotFoundXFTP(fileId: Int64)
     case connectionNotFound(agentConnId: String)
     case connectionNotFoundById(connId: Int64)
     case connectionNotFoundByMemberId(groupMemberId: Int64)

apps/ios/SimpleXChat/AppGroup.swift

@@ -36,7 +36,7 @@ let GROUP_DEFAULT_NETWORK_TCP_KEEP_INTVL = "networkTCPKeepIntvl"
 let GROUP_DEFAULT_NETWORK_TCP_KEEP_CNT = "networkTCPKeepCnt"
 public let GROUP_DEFAULT_INCOGNITO = "incognito"
 let GROUP_DEFAULT_STORE_DB_PASSPHRASE = "storeDBPassphrase"
-let GROUP_DEFAULT_INITIAL_RANDOM_DB_PASSPHRASE = "initialRandomDBPassphrase"
+public let GROUP_DEFAULT_INITIAL_RANDOM_DB_PASSPHRASE = "initialRandomDBPassphrase"
 public let GROUP_DEFAULT_CONFIRM_DB_UPGRADES = "confirmDBUpgrades"
 public let GROUP_DEFAULT_CALL_KIT_ENABLED = "callKitEnabled"
 

apps/ios/SimpleXChat/ChatTypes.swift

@@ -3378,11 +3378,14 @@ public struct SndFileTransfer: Decodable {
 }
 
 public struct RcvFileTransfer: Decodable {
-
+    public let fileId: Int64
 }
 
 public struct FileTransferMeta: Decodable {
-    
+    public let fileId: Int64
+    public let fileName: String
+    public let filePath: String
+    public let fileSize: Int64
 }
 
 public enum CICallStatus: String, Decodable {

apps/ios/SimpleXChat/FileUtils.swift

@@ -83,6 +83,7 @@ public func deleteAppDatabaseAndFiles() {
     try? fm.removeItem(atPath: dbPath + CHAT_DB_BAK)
     try? fm.removeItem(atPath: dbPath + AGENT_DB_BAK)
     try? fm.removeItem(at: getTempFilesDirectory())
+    try? fm.removeItem(at: getMigrationTempFilesDirectory())
     try? fm.createDirectory(at: getTempFilesDirectory(), withIntermediateDirectories: true)
     deleteAppFiles()
     _ = kcDatabasePassword.remove()
@@ -183,6 +184,10 @@ public func getTempFilesDirectory() -> URL {
     getAppDirectory().appendingPathComponent("temp_files", isDirectory: true)
 }
 
+public func getMigrationTempFilesDirectory() -> URL {
+    getDocumentsDirectory().appendingPathComponent("migration_temp_files", isDirectory: true)
+}
+
 public func getAppFilesDirectory() -> URL {
     getAppDirectory().appendingPathComponent("app_files", isDirectory: true)
 }

cabal.project

@@ -12,7 +12,7 @@ constraints: zip +disable-bzip2 +disable-zstd
 source-repository-package
     type: git
     location: https://github.com/simplex-chat/simplexmq.git
-    tag: 050a921fbbdf21690cab7765bf6237fdc5a419cb
+    tag: 0d843ea4ce1b26a25b55756bf86d1007629896c5
 
 source-repository-package
     type: git

docs/rfcs/2024-02-13-inactive-group-members-2.md

@@ -1,38 +0,0 @@
-# Inactive group members (simplified)
-
-[Original doc](./2023-11-21-inactive-group-members.md)
-
-## Problem
-
-Groups traffic is higher than necessary due to sending messages to inactive group members.
-
-## Solution
-
-### Improve connection deletion
-
-- When leaving or deleting group, batch db operations to optimize performance.
-- In agent - fix race where connection can be deleted while it has remaining pending messages.
-  - Current agent logic is to immediately delete connection if it has no rcv queues left.
-  - Simplest should be to make a smart version of `deleteConn` for this improvement, checking `snd_messages` table for remaining messages, and keep connection around in case there are.
-  - While this may improve delivery of group leave and delete messages, it may as well have undesirable side effects for other use cases, as any pending messages will be sent prior to deleting connection. For example, user sends several messages on bad network, decides to delete contact, messages are still delivered when user is on good network before deletion, even though this contradicts user's intent and messages hadn't left user's device at the time of deletion. Considering this race when it happens is identical to simply leaving groups by deleting app, or deleting user profile only locally, it may be a bad idea to affect regular contact deletion for this use case.
-
-### Track member inactivity
-
-- Mark members as inactive on QUOTA errors, reset as active on QCONT
-  - track `group_members.inactive` flag per group member
-  - on SMP.QUOTA error agent to notify client with ERR CONN QUOTA (new ConnectionErrorType QUOTA)
-  - on receiving QCONT agent to notify client (new event)
-  - apart from QCONT, reset on any message or receipt
-- Don't send to member if inactive
-  - don't send only content messages (x.msg.new, etc.) and always send messages altering group state?
-  - or don't send any messages?
-- Track number of skipped messages per member and first skipped message
-  - count `group_members.skipped_msg_cnt`
-  - only count messages of same types/criteria that are included into history
-  - track `group_members.skipped_first_shared_msg_id` (only content or including service messages?)
-- Send XGrpMsgSkipped before next message
-  - check `skipped_msg_cnt` > 0 and `skipped_first_shared_msg_id` is not null to only send once, reset after sending
-
-```haskell
-XGrpMsgSkipped :: SharedMsgId -> Int64 -> ChatMsgEvent 'Json -- from, count
-```

scripts/nix/sha256map.nix

@@ -1,5 +1,5 @@
 {
-  "https://github.com/simplex-chat/simplexmq.git"."050a921fbbdf21690cab7765bf6237fdc5a419cb" = "0bc8x3pv3l6wjcfx06yhyydf2amaw5jjax2wcbgbxzrhqz10xf1v";
+  "https://github.com/simplex-chat/simplexmq.git"."0d843ea4ce1b26a25b55756bf86d1007629896c5" = "0p3mw5kpqhxsjhairx7qaacv33hm11wmbax6jzv2w49nwkcpnbal";
   "https://github.com/simplex-chat/hs-socks.git"."a30cc7a79a08d8108316094f8f2f82a0c5e1ac51" = "0yasvnr7g91k76mjkamvzab2kvlb1g5pspjyjn2fr6v83swjhj38";
   "https://github.com/simplex-chat/direct-sqlcipher.git"."f814ee68b16a9447fbb467ccc8f29bdd3546bfd9" = "1ql13f4kfwkbaq7nygkxgw84213i0zm7c1a8hwvramayxl38dq5d";
   "https://github.com/simplex-chat/sqlcipher-simple.git"."a46bd361a19376c5211f1058908fc0ae6bf42446" = "1z0r78d8f0812kxbgsm735qf6xx8lvaz27k1a0b4a2m0sshpd5gl";

simplex-chat.cabal

@@ -136,7 +136,6 @@ library
       Simplex.Chat.Migrations.M20240122_indexes
       Simplex.Chat.Migrations.M20240214_redirect_file_id
       Simplex.Chat.Migrations.M20240222_app_settings
-      Simplex.Chat.Migrations.M20240226_users_restrict
       Simplex.Chat.Mobile
       Simplex.Chat.Mobile.File
       Simplex.Chat.Mobile.Shared

src/Simplex/Chat.hs

@@ -939,8 +939,7 @@ processChatCommand' vr = \case
       ct <- withStore $ \db -> getContact db user chatId
       filesInfo <- withStore' $ \db -> getContactFileInfo db user ct
       withChatLock "deleteChat direct" . procCmd $ do
-        cancelFilesInProgress user filesInfo
-        deleteFilesLocally filesInfo
+        deleteFilesAndConns user filesInfo
         when (contactReady ct && contactActive ct && notify) $
           void (sendDirectContactMessage ct XDirectDel) `catchChatError` const (pure ())
         contactConnIds <- map aConnId <$> withStore' (\db -> getContactConnections db userId ct)
@@ -963,8 +962,7 @@ processChatCommand' vr = \case
       unless canDelete $ throwChatError $ CEGroupUserRole gInfo GROwner
       filesInfo <- withStore' $ \db -> getGroupFileInfo db user gInfo
       withChatLock "deleteChat group" . procCmd $ do
-        cancelFilesInProgress user filesInfo
-        deleteFilesLocally filesInfo
+        deleteFilesAndConns user filesInfo
         when (memberActive membership && isOwner) . void $ sendGroupMessage' user gInfo members XGrpDel
         deleteGroupLinkIfExists user gInfo
         deleteMembersConnections user members
@@ -975,40 +973,37 @@ processChatCommand' vr = \case
         withStore' $ \db -> deleteGroupItemsAndMembers db user gInfo members
         withStore' $ \db -> deleteGroup db user gInfo
         let contactIds = mapMaybe memberContactId members
-        (errs1, (errs2, connIds)) <- second unzip . partitionEithers <$> withStoreBatch (\db -> map (deleteUnusedContact db) contactIds)
-        let errs = errs1 <> mapMaybe (fmap ChatErrorStore) errs2
-        unless (null errs) $ toView $ CRChatErrors (Just user) errs
-        deleteAgentConnectionsAsync user $ concat connIds
+        deleteAgentConnectionsAsync user . concat =<< mapM deleteUnusedContact contactIds
         pure $ CRGroupDeletedUser user gInfo
       where
-        deleteUnusedContact :: DB.Connection -> ContactId -> IO (Either ChatError (Maybe StoreError, [ConnId]))
-        deleteUnusedContact db contactId = runExceptT . withExceptT ChatErrorStore $ do
-          ct <- getContact db user contactId
-          ifM
-            ((directOrUsed ct ||) . isJust <$> liftIO (checkContactHasGroups db user ct))
-            (pure (Nothing, []))
-            (getConnections ct)
+        deleteUnusedContact :: ContactId -> m [ConnId]
+        deleteUnusedContact contactId =
+          (withStore (\db -> getContact db user contactId) >>= delete)
+            `catchChatError` (\e -> toView (CRChatError (Just user) e) $> [])
           where
-            getConnections :: Contact -> ExceptT StoreError IO (Maybe StoreError, [ConnId])
-            getConnections ct = do
-              conns <- liftIO $ getContactConnections db userId ct
-              e_ <- (setContactDeleted db user ct $> Nothing) `catchStoreError` (pure . Just)
-              pure (e_, map aConnId conns)
+            delete ct
+              | directOrUsed ct = pure []
+              | otherwise =
+                  withStore' (\db -> checkContactHasGroups db user ct) >>= \case
+                    Just _ -> pure []
+                    Nothing -> do
+                      conns <- withStore' $ \db -> getContactConnections db userId ct
+                      withStore (\db -> setContactDeleted db user ct)
+                        `catchChatError` (toView . CRChatError (Just user))
+                      pure $ map aConnId conns
     CTLocal -> pure $ chatCmdError (Just user) "not supported"
     CTContactRequest -> pure $ chatCmdError (Just user) "not supported"
   APIClearChat (ChatRef cType chatId) -> withUser $ \user@User {userId} -> case cType of
     CTDirect -> do
       ct <- withStore $ \db -> getContact db user chatId
       filesInfo <- withStore' $ \db -> getContactFileInfo db user ct
-      cancelFilesInProgress user filesInfo
-      deleteFilesLocally filesInfo
+      deleteFilesAndConns user filesInfo
       withStore' $ \db -> deleteContactCIs db user ct
       pure $ CRChatCleared user (AChatInfo SCTDirect $ DirectChat ct)
     CTGroup -> do
       gInfo <- withStore $ \db -> getGroupInfo db vr user chatId
       filesInfo <- withStore' $ \db -> getGroupFileInfo db user gInfo
-      cancelFilesInProgress user filesInfo
-      deleteFilesLocally filesInfo
+      deleteFilesAndConns user filesInfo
       withStore' $ \db -> deleteGroupCIs db user gInfo
       membersToDelete <- withStore' $ \db -> getGroupMembersForExpiration db user gInfo
       forM_ membersToDelete $ \m -> withStore' $ \db -> deleteGroupMember db user m
@@ -1017,7 +1012,7 @@ processChatCommand' vr = \case
       nf <- withStore $ \db -> getNoteFolder db user chatId
       filesInfo <- withStore' $ \db -> getNoteFolderFileInfo db user nf
       withChatLock "clearChat local" . procCmd $ do
-        deleteFilesLocally filesInfo
+        mapM_ (deleteFile user) filesInfo
         withStore' $ \db -> deleteNoteFolderFiles db userId nf
         withStore' $ \db -> deleteNoteFolderCIs db user nf
         pure $ CRChatCleared user (AChatInfo SCTLocal $ LocalChat nf)
@@ -1702,9 +1697,7 @@ processChatCommand' vr = \case
           pure $ CRUserDeletedMember user gInfo m {memberStatus = GSMemRemoved}
   APILeaveGroup groupId -> withUser $ \user@User {userId} -> do
     Group gInfo@GroupInfo {membership} members <- withStore $ \db -> getGroup db vr user groupId
-    filesInfo <- withStore' $ \db -> getGroupFileInfo db user gInfo
     withChatLock "leaveGroup" . procCmd $ do
-      cancelFilesInProgress user filesInfo
       (msg, _) <- sendGroupMessage' user gInfo members XGrpLeave
       ci <- saveSndChatItem user (CDGroupSnd gInfo) msg (CISndGroupEvent SGEUserLeft)
       toView $ CRNewChatItem user (AChatItem SCTGroup SMDSnd (GroupChat gInfo) ci)
@@ -2358,8 +2351,7 @@ processChatCommand' vr = \case
     deleteChatUser :: User -> Bool -> m ChatResponse
     deleteChatUser user delSMPQueues = do
       filesInfo <- withStore' (`getUserFileInfo` user)
-      cancelFilesInProgress user filesInfo
-      deleteFilesLocally filesInfo
+      forM_ filesInfo $ \fileInfo -> deleteFile user fileInfo
       withAgent $ \a -> deleteUser a (aUserId user) delSMPQueues
       withStore' (`deleteUserRecord` user)
       when (activeUser user) $ chatWriteVar currentUser Nothing
@@ -2567,72 +2559,50 @@ setAllExpireCIFlags b = do
     keys <- M.keys <$> readTVar expireFlags
     forM_ keys $ \k -> TM.insert k b expireFlags
 
-cancelFilesInProgress :: forall m. ChatMonad m => User -> [CIFileInfo] -> m ()
-cancelFilesInProgress user filesInfo = do
-  let filesInfo' = filter (not . fileEnded) filesInfo
-  (sfs, rfs) <- splitFTTypes <$> withStoreBatch (\db -> map (getFT db) filesInfo')
-  forM_ rfs $ \RcvFileTransfer {fileId} -> closeFileHandle fileId rcvFiles `catchChatError` \_ -> pure ()
-  void . withStoreBatch' $ \db -> map (updateSndFileCancelled db) sfs
-  void . withStoreBatch' $ \db -> map (updateRcvFileCancelled db) rfs
-  let xsfIds = mapMaybe (\(FileTransferMeta {fileId, xftpSndFile}, _) -> (,fileId) <$> xftpSndFile) sfs
-      xrfIds = mapMaybe (\RcvFileTransfer {fileId, xftpRcvFile} -> (,fileId) <$> xftpRcvFile) rfs
-  agentXFTPDeleteSndFilesRemote user xsfIds
-  agentXFTPDeleteRcvFiles xrfIds
-  let smpSFConnIds = concatMap (\(ft, sfts) -> mapMaybe (smpSndFileConnId ft) sfts) sfs
-      smpRFConnIds = mapMaybe smpRcvFileConnId rfs
-  deleteAgentConnectionsAsync user smpSFConnIds
-  deleteAgentConnectionsAsync user smpRFConnIds
-  where
-    fileEnded CIFileInfo {fileStatus} = case fileStatus of
-      Just (AFS _ status) -> ciFileEnded status
-      Nothing -> True
-    getFT :: DB.Connection -> CIFileInfo -> IO (Either ChatError FileTransfer)
-    getFT db CIFileInfo {fileId} = runExceptT . withExceptT ChatErrorStore $ getFileTransfer db user fileId
-    updateSndFileCancelled :: DB.Connection -> (FileTransferMeta, [SndFileTransfer]) -> IO ()
-    updateSndFileCancelled db (FileTransferMeta {fileId}, sfts) = do
-      updateFileCancelled db user fileId CIFSSndCancelled
-      forM_ sfts updateSndFTCancelled
-      where
-        updateSndFTCancelled :: SndFileTransfer -> IO ()
-        updateSndFTCancelled ft = unless (sndFTEnded ft) $ do
-          updateSndFileStatus db ft FSCancelled
-          deleteSndFileChunks db ft
-    updateRcvFileCancelled :: DB.Connection -> RcvFileTransfer -> IO ()
-    updateRcvFileCancelled db ft@RcvFileTransfer {fileId} = do
-      updateFileCancelled db user fileId CIFSRcvCancelled
-      updateRcvFileStatus db fileId FSCancelled
-      deleteRcvFileChunks db ft
-    splitFTTypes :: [Either ChatError FileTransfer] -> ([(FileTransferMeta, [SndFileTransfer])], [RcvFileTransfer])
-    splitFTTypes = foldr addFT ([], []) . rights
-      where
-        addFT f (sfs, rfs) = case f of
-          FTSnd ft@FileTransferMeta {cancelled} sfts | not cancelled -> ((ft, sfts) : sfs, rfs)
-          FTRcv ft@RcvFileTransfer {cancelled} | not cancelled -> (sfs, ft : rfs)
-          _ -> (sfs, rfs)
-    smpSndFileConnId :: FileTransferMeta -> SndFileTransfer -> Maybe ConnId
-    smpSndFileConnId FileTransferMeta {xftpSndFile} sft@SndFileTransfer {agentConnId = AgentConnId acId, fileInline}
-      | isNothing xftpSndFile && isNothing fileInline && not (sndFTEnded sft) = Just acId
-      | otherwise = Nothing
-    smpRcvFileConnId :: RcvFileTransfer -> Maybe ConnId
-    smpRcvFileConnId ft@RcvFileTransfer {xftpRcvFile, rcvFileInline}
-      | isNothing xftpRcvFile && isNothing rcvFileInline = liveRcvFileTransferConnId ft
-      | otherwise = Nothing
-    sndFTEnded SndFileTransfer {fileStatus} = fileStatus == FSCancelled || fileStatus == FSComplete
+deleteFilesAndConns :: ChatMonad m => User -> [CIFileInfo] -> m ()
+deleteFilesAndConns user filesInfo = do
+  connIds <- mapM (deleteFile user) filesInfo
+  deleteAgentConnectionsAsync user $ concat connIds
 
-deleteFilesLocally :: forall m. ChatMonad m => [CIFileInfo] -> m ()
-deleteFilesLocally files =
-  withFilesFolder $ \filesFolder ->
-    liftIO . forM_ files $ \CIFileInfo {filePath} ->
-      mapM_ (delete . (filesFolder </>)) filePath
+deleteFile :: ChatMonad m => User -> CIFileInfo -> m [ConnId]
+deleteFile user fileInfo = deleteFile' user fileInfo False
+
+deleteFile' :: forall m. ChatMonad m => User -> CIFileInfo -> Bool -> m [ConnId]
+deleteFile' user ciFileInfo@CIFileInfo {filePath} sendCancel = do
+  aConnIds <- cancelFile' user ciFileInfo sendCancel
+  forM_ filePath $ \fPath ->
+    deleteFileLocally fPath `catchChatError` (toView . CRChatError (Just user))
+  pure aConnIds
+
+deleteFileLocally :: forall m. ChatMonad m => FilePath -> m ()
+deleteFileLocally fPath =
+  withFilesFolder $ \filesFolder -> liftIO $ do
+    let fsFilePath = filesFolder </> fPath
+    removeFile fsFilePath `catchAll` \_ ->
+      removePathForcibly fsFilePath `catchAll_` pure ()
   where
-    delete :: FilePath -> IO ()
-    delete fPath =
-      removeFile fPath `catchAll` \_ ->
-        removePathForcibly fPath `catchAll_` pure ()
     -- perform an action only if filesFolder is set (i.e. on mobile devices)
     withFilesFolder :: (FilePath -> m ()) -> m ()
     withFilesFolder action = asks filesFolder >>= readTVarIO >>= mapM_ action
 
+cancelFile' :: forall m. ChatMonad m => User -> CIFileInfo -> Bool -> m [ConnId]
+cancelFile' user CIFileInfo {fileId, fileStatus} sendCancel =
+  case fileStatus of
+    Just fStatus -> cancel' fStatus `catchChatError` (\e -> toView (CRChatError (Just user) e) $> [])
+    Nothing -> pure []
+  where
+    cancel' :: ACIFileStatus -> m [ConnId]
+    cancel' (AFS dir status) =
+      if ciFileEnded status
+        then pure []
+        else case dir of
+          SMDSnd -> do
+            (ftm@FileTransferMeta {cancelled}, fts) <- withStore (\db -> getSndFileTransfer db user fileId)
+            if cancelled then pure [] else cancelSndFile user ftm fts sendCancel
+          SMDRcv -> do
+            ft@RcvFileTransfer {cancelled} <- withStore (\db -> getRcvFileTransfer db user fileId)
+            if cancelled then pure [] else maybeToList <$> cancelRcvFileTransfer user ft
+
 updateCallItemStatus :: ChatMonad m => User -> Contact -> Call -> WebRTCCallStatus -> Maybe MessageId -> m ()
 updateCallItemStatus user ct Call {chatItemId} receivedStatus msgId_ = do
   aciContent_ <- callStatusItemContent user ct chatItemId receivedStatus
@@ -3196,15 +3166,13 @@ expireChatItems user@User {userId} ttl sync = do
     processContact expirationDate ct = do
       waitChatStartedAndActivated
       filesInfo <- withStoreCtx' (Just "processContact, getContactExpiredFileInfo") $ \db -> getContactExpiredFileInfo db user ct expirationDate
-      cancelFilesInProgress user filesInfo
-      deleteFilesLocally filesInfo
+      deleteFilesAndConns user filesInfo
       withStoreCtx' (Just "processContact, deleteContactExpiredCIs") $ \db -> deleteContactExpiredCIs db user ct expirationDate
     processGroup :: UTCTime -> UTCTime -> GroupInfo -> m ()
     processGroup expirationDate createdAtCutoff gInfo = do
       waitChatStartedAndActivated
       filesInfo <- withStoreCtx' (Just "processGroup, getGroupExpiredFileInfo") $ \db -> getGroupExpiredFileInfo db user gInfo expirationDate createdAtCutoff
-      cancelFilesInProgress user filesInfo
-      deleteFilesLocally filesInfo
+      deleteFilesAndConns user filesInfo
       withStoreCtx' (Just "processGroup, deleteGroupExpiredCIs") $ \db -> deleteGroupExpiredCIs db user gInfo expirationDate createdAtCutoff
       membersToDelete <- withStoreCtx' (Just "processGroup, getGroupMembersForExpiration") $ \db -> getGroupMembersForExpiration db user gInfo
       forM_ membersToDelete $ \m -> withStoreCtx' (Just "processGroup, deleteGroupMember") $ \db -> deleteGroupMember db user m
@@ -5870,7 +5838,7 @@ deleteMembersConnections user members = do
         filter (\Connection {connStatus} -> connStatus /= ConnDeleted) $
           mapMaybe (\GroupMember {activeConn} -> activeConn) members
   deleteAgentConnectionsAsync user $ map aConnId memberConns
-  void . withStoreBatch' $ \db -> map (\conn -> updateConnectionStatus db conn ConnDeleted) memberConns
+  forM_ memberConns $ \conn -> withStore' $ \db -> updateConnectionStatus db conn ConnDeleted
 
 deleteMemberConnection :: ChatMonad m => User -> GroupMember -> m ()
 deleteMemberConnection user GroupMember {activeConn} = do
@@ -6185,19 +6153,18 @@ deleteGroupCI user gInfo ci@ChatItem {file} byUser timed byGroupMember_ deletedT
     gItem = AChatItem SCTGroup msgDirection (GroupChat gInfo)
 
 deleteLocalCI :: (ChatMonad m, MsgDirectionI d) => User -> NoteFolder -> ChatItem 'CTLocal d -> Bool -> Bool -> m ChatResponse
-deleteLocalCI user nf ci@ChatItem {file = file_} byUser timed = do
-  forM_ file_ $ \file -> do
-    let filesInfo = [mkCIFileInfo file]
-    deleteFilesLocally filesInfo
+deleteLocalCI user nf ci@ChatItem {file} byUser timed = do
+  forM_ file $ \CIFile {fileSource} -> do
+    forM_ (CF.filePath <$> fileSource) $ \fPath ->
+      deleteFileLocally fPath `catchChatError` (toView . CRChatError (Just user))
   withStore' $ \db -> deleteLocalChatItem db user nf ci
   pure $ CRChatItemDeleted user (AChatItem SCTLocal msgDirection (LocalChat nf) ci) Nothing byUser timed
 
 deleteCIFile :: (ChatMonad m, MsgDirectionI d) => User -> Maybe (CIFile d) -> m ()
 deleteCIFile user file_ =
   forM_ file_ $ \file -> do
-    let filesInfo = [mkCIFileInfo file]
-    cancelFilesInProgress user filesInfo
-    deleteFilesLocally filesInfo
+    fileAgentConnIds <- deleteFile' user (mkCIFileInfo file) True
+    deleteAgentConnectionsAsync user fileAgentConnIds
 
 markDirectCIDeleted :: (ChatMonad m, MsgDirectionI d) => User -> Contact -> ChatItem 'CTDirect d -> MessageId -> Bool -> UTCTime -> m ChatResponse
 markDirectCIDeleted user ct ci@ChatItem {file} msgId byUser deletedTs = do
@@ -6218,8 +6185,8 @@ markGroupCIDeleted user gInfo ci@ChatItem {file} msgId byUser byGroupMember_ del
 cancelCIFile :: (ChatMonad m, MsgDirectionI d) => User -> Maybe (CIFile d) -> m ()
 cancelCIFile user file_ =
   forM_ file_ $ \file -> do
-    let filesInfo = [mkCIFileInfo file]
-    cancelFilesInProgress user filesInfo
+    fileAgentConnIds <- cancelFile' user (mkCIFileInfo file) True
+    deleteAgentConnectionsAsync user fileAgentConnIds
 
 createAgentConnectionAsync :: forall m c. (ChatMonad m, ConnectionModeI c) => User -> CommandFunction -> Bool -> SConnectionMode c -> SubscriptionMode -> m (CommandId, ConnId)
 createAgentConnectionAsync user cmdFunction enableNtfs cMode subMode = do
@@ -6261,43 +6228,20 @@ agentXFTPDeleteRcvFile aFileId fileId = do
   withAgent (`xftpDeleteRcvFile` aFileId)
   withStore' $ \db -> setRcvFTAgentDeleted db fileId
 
-agentXFTPDeleteRcvFiles :: ChatMonad m => [(XFTPRcvFile, FileTransferId)] -> m ()
-agentXFTPDeleteRcvFiles rcvFiles = do
-  let rcvFiles' = filter (not . agentRcvFileDeleted . fst) rcvFiles
-      rfIds = mapMaybe fileIds rcvFiles'
-  withAgent $ \a -> xftpDeleteRcvFiles a (map fst rfIds)
-  void . withStoreBatch' $ \db -> map (setRcvFTAgentDeleted db . snd) rfIds
-  where
-    fileIds :: (XFTPRcvFile, FileTransferId) -> Maybe (RcvFileId, FileTransferId)
-    fileIds (XFTPRcvFile {agentRcvFileId = Just (AgentRcvFileId aFileId)}, fileId) = Just (aFileId, fileId)
-    fileIds _ = Nothing
-
 agentXFTPDeleteSndFileRemote :: ChatMonad m => User -> XFTPSndFile -> FileTransferId -> m ()
-agentXFTPDeleteSndFileRemote user xsf fileId =
-  agentXFTPDeleteSndFilesRemote user [(xsf, fileId)]
-
-agentXFTPDeleteSndFilesRemote :: forall m. ChatMonad m => User -> [(XFTPSndFile, FileTransferId)] -> m ()
-agentXFTPDeleteSndFilesRemote user sndFiles = do
-  (_errs, redirects) <- partitionEithers <$> withStoreBatch' (\db -> map (lookupFileTransferRedirectMeta db user . snd) sndFiles)
-  let redirects' = mapMaybe mapRedirectMeta $ concat redirects
-      sndFilesAll = redirects' <> sndFiles
-      sndFilesAll' = filter (not . agentSndFileDeleted . fst) sndFilesAll
-  sndFilesAll'' <- catMaybes <$> mapM sndFileDescr sndFilesAll'
-  let sfs = map (\(XFTPSndFile {agentSndFileId = AgentSndFileId aFileId}, sfd, _) -> (aFileId, sfd)) sndFilesAll''
-  withAgent $ \a -> xftpDeleteSndFilesRemote a (aUserId user) sfs
-  void . withStoreBatch' $ \db -> map (setSndFTAgentDeleted db user . (\(_, _, fId) -> fId)) sndFilesAll''
+agentXFTPDeleteSndFileRemote user sndFile fileId = do
+    -- the agent doesn't know about redirect, delete explicitly
+  redirect_ <- withStore' $ \db -> lookupFileTransferRedirectMeta db user fileId
+  forM_ redirect_ $ \FileTransferMeta {fileId = fileIdRedirect, xftpSndFile = sndFileRedirect_} ->
+    mapM_ (handleError (const $ pure ()) . remove fileIdRedirect) sndFileRedirect_
+  remove fileId sndFile
   where
-    mapRedirectMeta :: FileTransferMeta -> Maybe (XFTPSndFile, FileTransferId)
-    mapRedirectMeta FileTransferMeta {fileId = fileId, xftpSndFile = Just sndFileRedirect} = Just (sndFileRedirect, fileId)
-    mapRedirectMeta _ = Nothing
-    sndFileDescr :: (XFTPSndFile, FileTransferId) -> m (Maybe (XFTPSndFile, ValidFileDescription 'FSender, FileTransferId))
-    sndFileDescr (xsf@XFTPSndFile {privateSndFileDescr}, fileId) =
-      join <$> forM privateSndFileDescr parseSndDescr
-      where
-        parseSndDescr sfdText =
-          tryChatError (parseFileDescription sfdText) >>= \case
-            Left _ -> pure Nothing
-            Right sd -> pure $ Just (xsf, sd, fileId)
+    remove fId XFTPSndFile {agentSndFileId = AgentSndFileId aFileId, privateSndFileDescr, agentSndFileDeleted} =
+      unless agentSndFileDeleted $ do
+        forM_ privateSndFileDescr $ \sfdText -> do
+          sd <- parseFileDescription sfdText
+          withAgent $ \a -> xftpDeleteSndFileRemote a (aUserId user) aFileId sd
+          withStore' $ \db -> setSndFTAgentDeleted db user fId
 
 userProfileToSend :: User -> Maybe Profile -> Maybe Contact -> Bool -> Profile
 userProfileToSend user@User {profile = p} incognitoProfile ct inGroup = do

src/Simplex/Chat/Controller.hs

@@ -1252,14 +1252,6 @@ mkChatError :: SomeException -> ChatError
 mkChatError = ChatError . CEException . show
 {-# INLINE mkChatError #-}
 
-catchStoreError :: ExceptT StoreError IO a -> (StoreError -> ExceptT StoreError IO a) -> ExceptT StoreError IO a
-catchStoreError = catchAllErrors mkStoreError
-{-# INLINE catchStoreError #-}
-
-mkStoreError :: SomeException -> StoreError
-mkStoreError = SEInternalError . show
-{-# INLINE mkStoreError #-}
-
 chatCmdError :: Maybe User -> String -> ChatResponse
 chatCmdError user = CRChatCmdError user . ChatError . CECommandError
 

src/Simplex/Chat/Migrations/M20240226_users_restrict.hs

@@ -1,30 +0,0 @@
-{-# LANGUAGE QuasiQuotes #-}
-
-module Simplex.Chat.Migrations.M20240226_users_restrict where
-
-import Database.SQLite.Simple (Query)
-import Database.SQLite.Simple.QQ (sql)
-
-m20240226_users_restrict :: Query
-m20240226_users_restrict =
-  [sql|
-PRAGMA writable_schema=1;
-
-UPDATE sqlite_master
-SET sql = replace(sql, 'ON DELETE CASCADE', 'ON DELETE RESTRICT')
-WHERE name = 'users' AND type = 'table';
-
-PRAGMA writable_schema=0;
-|]
-
-down_m20240226_users_restrict :: Query
-down_m20240226_users_restrict =
-  [sql|
-PRAGMA writable_schema=1;
-
-UPDATE sqlite_master
-SET sql = replace(sql, 'ON DELETE RESTRICT', 'ON DELETE CASCADE')
-WHERE name = 'users' AND type = 'table';
-
-PRAGMA writable_schema=0;
-|]

src/Simplex/Chat/Migrations/chat_schema.sql

@@ -22,7 +22,7 @@ CREATE TABLE contact_profiles(
 );
 CREATE TABLE users(
   user_id INTEGER PRIMARY KEY,
-  contact_id INTEGER NOT NULL UNIQUE REFERENCES contacts ON DELETE RESTRICT
+  contact_id INTEGER NOT NULL UNIQUE REFERENCES contacts ON DELETE CASCADE
   DEFERRABLE INITIALLY DEFERRED,
   local_display_name TEXT NOT NULL UNIQUE,
   active_user INTEGER NOT NULL DEFAULT 0,
@@ -37,7 +37,7 @@ CREATE TABLE users(
   user_member_profile_updated_at TEXT, -- 1 for active user
   FOREIGN KEY(user_id, local_display_name)
   REFERENCES display_names(user_id, local_display_name)
-  ON DELETE RESTRICT
+  ON DELETE CASCADE
   ON UPDATE CASCADE
   DEFERRABLE INITIALLY DEFERRED
 );

src/Simplex/Chat/Store/Migrations.hs

@@ -100,7 +100,6 @@ import Simplex.Chat.Migrations.M20240115_block_member_for_all
 import Simplex.Chat.Migrations.M20240122_indexes
 import Simplex.Chat.Migrations.M20240214_redirect_file_id
 import Simplex.Chat.Migrations.M20240222_app_settings
-import Simplex.Chat.Migrations.M20240226_users_restrict
 import Simplex.Messaging.Agent.Store.SQLite.Migrations (Migration (..))
 
 schemaMigrations :: [(String, Query, Maybe Query)]
@@ -200,8 +199,7 @@ schemaMigrations =
     ("20240115_block_member_for_all", m20240115_block_member_for_all, Just down_m20240115_block_member_for_all),
     ("20240122_indexes", m20240122_indexes, Just down_m20240122_indexes),
     ("20240214_redirect_file_id", m20240214_redirect_file_id, Just down_m20240214_redirect_file_id),
-    ("20240222_app_settings", m20240222_app_settings, Just down_m20240222_app_settings),
-    ("20240226_users_restrict", m20240226_users_restrict, Just down_m20240226_users_restrict)
+    ("20240222_app_settings", m20240222_app_settings, Just down_m20240222_app_settings)
   ]
 
 -- | The list of migrations in ascending order by date

src/Simplex/Chat/Types.hs

@@ -46,7 +46,7 @@ import Database.SQLite.Simple.ToField (ToField (..))
 import Simplex.Chat.Types.Preferences
 import Simplex.Chat.Types.Util
 import Simplex.FileTransfer.Description (FileDigest)
-import Simplex.Messaging.Agent.Protocol (ACommandTag (..), ACorrId, AParty (..), APartyCmdTag (..), ConnId, ConnectionMode (..), ConnectionRequestUri, InvitationId, RcvFileId, SAEntity (..), SndFileId, UserId)
+import Simplex.Messaging.Agent.Protocol (ACommandTag (..), ACorrId, AParty (..), APartyCmdTag (..), ConnId, ConnectionMode (..), ConnectionRequestUri, InvitationId, SAEntity (..), UserId)
 import Simplex.Messaging.Crypto.File (CryptoFileArgs (..))
 import Simplex.Messaging.Encoding.String
 import Simplex.Messaging.Parsers (defaultJSON, dropPrefix, enumJSON, fromTextField_, sumTypeJSON, taggedObjectJSON)
@@ -1142,7 +1142,7 @@ instance FromField AgentConnId where fromField f = AgentConnId <$> fromField f
 
 instance ToField AgentConnId where toField (AgentConnId m) = toField m
 
-newtype AgentSndFileId = AgentSndFileId SndFileId
+newtype AgentSndFileId = AgentSndFileId ConnId
   deriving (Eq, Show)
 
 instance StrEncoding AgentSndFileId where
@@ -1161,7 +1161,7 @@ instance FromField AgentSndFileId where fromField f = AgentSndFileId <$> fromFie
 
 instance ToField AgentSndFileId where toField (AgentSndFileId m) = toField m
 
-newtype AgentRcvFileId = AgentRcvFileId RcvFileId
+newtype AgentRcvFileId = AgentRcvFileId ConnId
   deriving (Eq, Show)
 
 instance StrEncoding AgentRcvFileId where

tests/ChatTests/Files.hs

@@ -20,6 +20,7 @@ import Simplex.Chat.Options (ChatOpts (..))
 import Simplex.FileTransfer.Server.Env (XFTPServerConfig (..))
 import Simplex.Messaging.Crypto.File (CryptoFile (..), CryptoFileArgs (..))
 import Simplex.Messaging.Encoding.String
+import Simplex.Messaging.Util (unlessM)
 import System.Directory (copyFile, createDirectoryIfMissing, doesFileExist, getFileSize)
 import Test.Hspec hiding (it)