package widgets import ( "errors" "fmt" "net" "net/url" "os" "os/exec" "path" "strconv" "strings" "sync" "time" "github.com/emersion/go-message/mail" "github.com/gdamore/tcell/v2" "github.com/go-ini/ini" "github.com/kyoh86/xdg" "git.sr.ht/~rjarry/aerc/config" "git.sr.ht/~rjarry/aerc/lib/ui" "git.sr.ht/~rjarry/aerc/log" ) const ( CONFIGURE_BASICS = iota CONFIGURE_INCOMING = iota CONFIGURE_OUTGOING = iota CONFIGURE_COMPLETE = iota ) const ( IMAP_OVER_TLS = iota IMAP_STARTTLS = iota IMAP_INSECURE = iota ) const ( SMTP_OVER_TLS = iota SMTP_STARTTLS = iota SMTP_INSECURE = iota ) type AccountWizard struct { aerc *Aerc step int steps []*ui.Grid focus int temporary bool // CONFIGURE_BASICS accountName *ui.TextInput email *ui.TextInput fullName *ui.TextInput basics []ui.Interactive // CONFIGURE_INCOMING imapUsername *ui.TextInput imapPassword *ui.TextInput imapServer *ui.TextInput imapMode int imapStr *ui.Text imapUrl url.URL incoming []ui.Interactive // CONFIGURE_OUTGOING smtpUsername *ui.TextInput smtpPassword *ui.TextInput smtpServer *ui.TextInput smtpMode int smtpStr *ui.Text smtpUrl url.URL copySent bool outgoing []ui.Interactive // CONFIGURE_COMPLETE complete []ui.Interactive } func showPasswordWarning(aerc *Aerc) { title := "The Wizard will store your passwords in plaintext" text := "It is recommended to remove the plaintext passwords " + "and use your personal password store with " + "'source-cred-cmd' and 'outgoing-cred-cmd' after the setup." warning := NewSelectorDialog( title, text, []string{"OK"}, 0, aerc.SelectedAccountUiConfig(), func(_ string, _ error) { aerc.CloseDialog() }, ) aerc.AddDialog(warning) } func NewAccountWizard(aerc *Aerc) *AccountWizard { wizard := &AccountWizard{ accountName: ui.NewTextInput("", config.Ui).Prompt("> "), aerc: aerc, temporary: false, copySent: true, email: ui.NewTextInput("", config.Ui).Prompt("> "), fullName: ui.NewTextInput("", config.Ui).Prompt("> "), imapPassword: ui.NewTextInput("", config.Ui).Prompt("] ").Password(true), imapServer: ui.NewTextInput("", config.Ui).Prompt("> "), imapStr: ui.NewText("Connection URL: imaps://", config.Ui.GetStyle(config.STYLE_DEFAULT)), imapUsername: ui.NewTextInput("", config.Ui).Prompt("> "), smtpPassword: ui.NewTextInput("", config.Ui).Prompt("] ").Password(true), smtpServer: ui.NewTextInput("", config.Ui).Prompt("> "), smtpStr: ui.NewText("Connection URL: smtps://", config.Ui.GetStyle(config.STYLE_DEFAULT)), smtpUsername: ui.NewTextInput("", config.Ui).Prompt("> "), } // Autofill some stuff for the user wizard.email.OnChange(func(_ *ui.TextInput) { value := wizard.email.String() wizard.imapUsername.Set(value) wizard.smtpUsername.Set(value) if strings.ContainsRune(value, '@') { server := value[strings.IndexRune(value, '@')+1:] wizard.imapServer.Set(server) wizard.smtpServer.Set(server) } wizard.imapUri() wizard.smtpUri() }) wizard.imapServer.OnChange(func(_ *ui.TextInput) { imapServerURI := wizard.imapServer.String() smtpServerURI := imapServerURI if strings.HasPrefix(imapServerURI, "imap.") { smtpServerURI = strings.Replace(imapServerURI, "imap.", "smtp.", 1) } wizard.smtpServer.Set(smtpServerURI) wizard.imapUri() wizard.smtpUri() }) wizard.imapUsername.OnChange(func(_ *ui.TextInput) { wizard.smtpUsername.Set(wizard.imapUsername.String()) wizard.imapUri() wizard.smtpUri() }) var once sync.Once var lastChange time.Time wizard.imapPassword.OnChange(func(_ *ui.TextInput) { wizard.smtpPassword.Set(wizard.imapPassword.String()) wizard.imapUri() wizard.smtpUri() lastChange = time.Now() once.Do(func() { // debounce to ensure pasted passwords are pasted completely go func() { defer log.PanicHandler() for !time.Now().After(lastChange.Add(10 * time.Millisecond)) { <-time.After(10 * time.Millisecond) } showPasswordWarning(aerc) }() }) }) wizard.smtpServer.OnChange(func(_ *ui.TextInput) { wizard.smtpUri() }) wizard.smtpUsername.OnChange(func(_ *ui.TextInput) { wizard.smtpUri() }) wizard.smtpPassword.OnChange(func(_ *ui.TextInput) { wizard.smtpUri() }) basics := ui.NewGrid().Rows([]ui.GridSpec{ {Strategy: ui.SIZE_EXACT, Size: ui.Const(8)}, // Introduction {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Account name (label) {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // (input) {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Padding {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Full name (label) {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // (input) {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Padding {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Email address (label) {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // (input) {Strategy: ui.SIZE_WEIGHT, Size: ui.Const(1)}, }).Columns([]ui.GridSpec{ {Strategy: ui.SIZE_WEIGHT, Size: ui.Const(1)}, }) basics.AddChild( ui.NewText("\nWelcome to aerc! Let's configure your account.\n\n"+ "This wizard supports basic IMAP & SMTP configuration.\n"+ "For other configurations, use to exit and read the "+ "aerc-accounts(5) man page.\n"+ "Press and to cycle between each field in this form, "+ "or and .", config.Ui.GetStyle(config.STYLE_DEFAULT))) basics.AddChild( ui.NewText("Name for this account? (e.g. 'Personal' or 'Work')", config.Ui.GetStyle(config.STYLE_HEADER))). At(1, 0) basics.AddChild(wizard.accountName). At(2, 0) basics.AddChild(ui.NewFill(' ', tcell.StyleDefault)). At(3, 0) basics.AddChild( ui.NewText("Full name for outgoing emails? (e.g. 'John Doe')", config.Ui.GetStyle(config.STYLE_HEADER))). At(4, 0) basics.AddChild(wizard.fullName). At(5, 0) basics.AddChild(ui.NewFill(' ', tcell.StyleDefault)). At(6, 0) basics.AddChild( ui.NewText("Your email address? (e.g. 'john@example.org')", config.Ui.GetStyle(config.STYLE_HEADER))). At(7, 0) basics.AddChild(wizard.email). At(8, 0) selector := NewSelector([]string{"Next"}, 0, config.Ui). OnChoose(func(option string) { email := wizard.email.String() if strings.ContainsRune(email, '@') { server := email[strings.IndexRune(email, '@')+1:] hostport, srv := getSRV(server, []string{"imaps", "imap"}) if hostport != "" { wizard.imapServer.Set(hostport) if srv == "imaps" { wizard.imapMode = IMAP_OVER_TLS } else { wizard.imapMode = IMAP_STARTTLS } wizard.imapUri() } hostport, _ = getSRV(server, []string{"submission"}) if hostport != "" { wizard.smtpServer.Set(hostport) wizard.smtpMode = SMTP_STARTTLS wizard.smtpUri() } } wizard.advance(option) }) basics.AddChild(selector).At(9, 0) wizard.basics = []ui.Interactive{ wizard.accountName, wizard.fullName, wizard.email, selector, } incoming := ui.NewGrid().Rows([]ui.GridSpec{ {Strategy: ui.SIZE_EXACT, Size: ui.Const(3)}, // Introduction {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Username (label) {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // (input) {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Padding {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Password (label) {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // (input) {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Padding {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Server (label) {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // (input) {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Padding {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Connection mode (label) {Strategy: ui.SIZE_EXACT, Size: ui.Const(2)}, // (input) {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Padding {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Connection string {Strategy: ui.SIZE_WEIGHT, Size: ui.Const(1)}, }).Columns([]ui.GridSpec{ {Strategy: ui.SIZE_WEIGHT, Size: ui.Const(1)}, }) incoming.AddChild(ui.NewText("\nConfigure incoming mail (IMAP)", config.Ui.GetStyle(config.STYLE_DEFAULT))) incoming.AddChild( ui.NewText("Username", config.Ui.GetStyle(config.STYLE_HEADER))). At(1, 0) incoming.AddChild(wizard.imapUsername). At(2, 0) incoming.AddChild(ui.NewFill(' ', tcell.StyleDefault)). At(3, 0) incoming.AddChild( ui.NewText("Password", config.Ui.GetStyle(config.STYLE_HEADER))). At(4, 0) incoming.AddChild(wizard.imapPassword). At(5, 0) incoming.AddChild(ui.NewFill(' ', tcell.StyleDefault)). At(6, 0) incoming.AddChild( ui.NewText("Server address "+ "(e.g. 'mail.example.org' or 'mail.example.org:1313')", config.Ui.GetStyle(config.STYLE_HEADER))). At(7, 0) incoming.AddChild(wizard.imapServer). At(8, 0) incoming.AddChild(ui.NewFill(' ', tcell.StyleDefault)). At(9, 0) incoming.AddChild( ui.NewText("Connection mode", config.Ui.GetStyle(config.STYLE_HEADER))). At(10, 0) imapMode := NewSelector([]string{ "IMAP over SSL/TLS", "IMAP with STARTTLS", "Insecure IMAP", }, 0, config.Ui).Chooser(true).OnSelect(func(option string) { switch option { case "IMAP over SSL/TLS": wizard.imapMode = IMAP_OVER_TLS case "IMAP with STARTTLS": wizard.imapMode = IMAP_STARTTLS case "Insecure IMAP": wizard.imapMode = IMAP_INSECURE } wizard.imapUri() }) incoming.AddChild(imapMode).At(11, 0) selector = NewSelector([]string{"Previous", "Next"}, 1, config.Ui). OnChoose(wizard.advance) incoming.AddChild(ui.NewFill(' ', tcell.StyleDefault)).At(12, 0) incoming.AddChild(wizard.imapStr).At(13, 0) incoming.AddChild(selector).At(14, 0) wizard.incoming = []ui.Interactive{ wizard.imapUsername, wizard.imapPassword, wizard.imapServer, imapMode, selector, } outgoing := ui.NewGrid().Rows([]ui.GridSpec{ {Strategy: ui.SIZE_EXACT, Size: ui.Const(3)}, // Introduction {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Username (label) {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // (input) {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Padding {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Password (label) {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // (input) {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Padding {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Server (label) {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // (input) {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Padding {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Connection mode (label) {Strategy: ui.SIZE_EXACT, Size: ui.Const(2)}, // (input) {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Padding {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Connection string {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Padding {Strategy: ui.SIZE_EXACT, Size: ui.Const(1)}, // Copy to sent (label) {Strategy: ui.SIZE_EXACT, Size: ui.Const(2)}, // (input) {Strategy: ui.SIZE_WEIGHT, Size: ui.Const(1)}, }).Columns([]ui.GridSpec{ {Strategy: ui.SIZE_WEIGHT, Size: ui.Const(1)}, }) outgoing.AddChild(ui.NewText("\nConfigure outgoing mail (SMTP)", config.Ui.GetStyle(config.STYLE_DEFAULT))) outgoing.AddChild( ui.NewText("Username", config.Ui.GetStyle(config.STYLE_HEADER))). At(1, 0) outgoing.AddChild(wizard.smtpUsername). At(2, 0) outgoing.AddChild(ui.NewFill(' ', tcell.StyleDefault)). At(3, 0) outgoing.AddChild( ui.NewText("Password", config.Ui.GetStyle(config.STYLE_HEADER))). At(4, 0) outgoing.AddChild(wizard.smtpPassword). At(5, 0) outgoing.AddChild(ui.NewFill(' ', tcell.StyleDefault)). At(6, 0) outgoing.AddChild( ui.NewText("Server address "+ "(e.g. 'mail.example.org' or 'mail.example.org:1313')", config.Ui.GetStyle(config.STYLE_HEADER))). At(7, 0) outgoing.AddChild(wizard.smtpServer). At(8, 0) outgoing.AddChild(ui.NewFill(' ', tcell.StyleDefault)). At(9, 0) outgoing.AddChild( ui.NewText("Connection mode", config.Ui.GetStyle(config.STYLE_HEADER))). At(10, 0) smtpMode := NewSelector([]string{ "SMTP over SSL/TLS", "SMTP with STARTTLS", "Insecure SMTP", }, 0, config.Ui).Chooser(true).OnSelect(func(option string) { switch option { case "SMTP over SSL/TLS": wizard.smtpMode = SMTP_OVER_TLS case "SMTP with STARTTLS": wizard.smtpMode = SMTP_STARTTLS case "Insecure SMTP": wizard.smtpMode = SMTP_INSECURE } wizard.smtpUri() }) outgoing.AddChild(smtpMode).At(11, 0) selector = NewSelector([]string{"Previous", "Next"}, 1, config.Ui). OnChoose(wizard.advance) outgoing.AddChild(ui.NewFill(' ', tcell.StyleDefault)).At(12, 0) outgoing.AddChild(wizard.smtpStr).At(13, 0) outgoing.AddChild(ui.NewFill(' ', tcell.StyleDefault)).At(14, 0) outgoing.AddChild( ui.NewText("Copy sent messages to 'Sent' folder?", config.Ui.GetStyle(config.STYLE_HEADER))).At(15, 0) copySent := NewSelector([]string{"Yes", "No"}, 0, config.Ui). Chooser(true).OnChoose(func(option string) { switch option { case "Yes": wizard.copySent = true case "No": wizard.copySent = false } }) outgoing.AddChild(copySent).At(16, 0) outgoing.AddChild(selector).At(17, 0) wizard.outgoing = []ui.Interactive{ wizard.smtpUsername, wizard.smtpPassword, wizard.smtpServer, smtpMode, copySent, selector, } complete := ui.NewGrid().Rows([]ui.GridSpec{ {Strategy: ui.SIZE_EXACT, Size: ui.Const(7)}, // Introduction {Strategy: ui.SIZE_WEIGHT, Size: ui.Const(1)}, // Previous / Finish / Finish & open tutorial }).Columns([]ui.GridSpec{ {Strategy: ui.SIZE_WEIGHT, Size: ui.Const(1)}, }) complete.AddChild(ui.NewText( "\nConfiguration complete!\n\n"+ "You can go back and double check your settings, or choose 'Finish' to\n"+ "save your settings to accounts.conf.\n\n"+ "To add another account in the future, run ':new-account'.", config.Ui.GetStyle(config.STYLE_DEFAULT))) selector = NewSelector([]string{ "Previous", "Finish & open tutorial", "Finish", }, 1, config.Ui).OnChoose(func(option string) { switch option { case "Previous": wizard.advance("Previous") case "Finish & open tutorial": wizard.finish(true) case "Finish": wizard.finish(false) } }) complete.AddChild(selector).At(1, 0) wizard.complete = []ui.Interactive{selector} wizard.steps = []*ui.Grid{basics, incoming, outgoing, complete} return wizard } func (wizard *AccountWizard) ConfigureTemporaryAccount(temporary bool) { wizard.temporary = temporary } func (wizard *AccountWizard) errorFor(d ui.Interactive, err error) { if d == nil { wizard.aerc.PushError(err.Error()) wizard.Invalidate() return } for step, interactives := range [][]ui.Interactive{ wizard.basics, wizard.incoming, wizard.outgoing, } { for focus, item := range interactives { if item == d { wizard.Focus(false) wizard.step = step wizard.focus = focus wizard.Focus(true) wizard.aerc.PushError(err.Error()) wizard.Invalidate() return } } } } func (wizard *AccountWizard) finish(tutorial bool) { accountsConf := path.Join(xdg.ConfigHome(), "aerc", "accounts.conf") // Validation if wizard.accountName.String() == "" { wizard.errorFor(wizard.accountName, errors.New("Account name is required")) return } if wizard.email.String() == "" { wizard.errorFor(wizard.email, errors.New("Email address is required")) return } if wizard.fullName.String() == "" { wizard.errorFor(wizard.fullName, errors.New("Full name is required")) return } if wizard.imapServer.String() == "" { wizard.errorFor(wizard.imapServer, errors.New("IMAP server is required")) return } if wizard.imapServer.String() == "" { wizard.errorFor(wizard.smtpServer, errors.New("SMTP server is required")) return } file, err := ini.Load(accountsConf) if err != nil { file = ini.Empty() } var sec *ini.Section if sec, _ = file.GetSection(wizard.accountName.String()); sec != nil { wizard.errorFor(wizard.accountName, errors.New("An account by this name already exists")) return } sec, _ = file.NewSection(wizard.accountName.String()) // these can't really fail sec.NewKey("source", wizard.imapUrl.String()) //nolint:errcheck // can't fail. option shadowing is not enabled and the key is not empty sec.NewKey("outgoing", wizard.smtpUrl.String()) //nolint:errcheck // can't fail. option shadowing is not enabled and the key is not empty sec.NewKey("default", "INBOX") //nolint:errcheck // can't fail. option shadowing is not enabled and the key is not empty sec.NewKey("from", fmt.Sprintf("%s <%s>", //nolint:errcheck // can't fail. option shadowing is not enabled and the key is not empty wizard.fullName.String(), wizard.email.String())) if wizard.copySent { sec.NewKey("copy-to", "Sent") //nolint:errcheck // can't fail. option shadowing is not enabled and the key is not empty } if !wizard.temporary { f, err := os.OpenFile(accountsConf, os.O_WRONLY|os.O_CREATE, 0o600) if err != nil { wizard.errorFor(nil, err) return } if _, err = file.WriteTo(f); err != nil { wizard.errorFor(nil, err) return } } from, err := mail.ParseAddress(sec.Key("from").String()) if err != nil { wizard.errorFor(nil, err) return } account := config.AccountConfig{ Name: sec.Name(), Default: "INBOX", From: from, Source: sec.Key("source").String(), Outgoing: config.RemoteConfig{Value: sec.Key("outgoing").String()}, } if wizard.copySent { account.CopyTo = "Sent" } config.Accounts = append(config.Accounts, &account) view, err := NewAccountView(wizard.aerc, &account, wizard.aerc, nil) if err != nil { wizard.aerc.NewTab(errorScreen(err.Error()), account.Name) return } wizard.aerc.accounts[account.Name] = view wizard.aerc.NewTab(view, account.Name) if tutorial { name := "aerc-tutorial" if _, err := os.Stat("./aerc-tutorial.7"); !os.IsNotExist(err) { // For development name = "./aerc-tutorial.7" } term, err := NewTerminal(exec.Command("man", name)) if err != nil { wizard.errorFor(nil, err) return } wizard.aerc.NewTab(term, "Tutorial") term.OnClose = func(err error) { wizard.aerc.RemoveTab(term, false) if err != nil { wizard.aerc.PushError(err.Error()) } } } wizard.aerc.RemoveTab(wizard, false) } func (wizard *AccountWizard) imapUri() url.URL { host := wizard.imapServer.String() user := wizard.imapUsername.String() pass := wizard.imapPassword.String() var scheme string switch wizard.imapMode { case IMAP_OVER_TLS: scheme = "imaps" case IMAP_STARTTLS: scheme = "imap" case IMAP_INSECURE: scheme = "imap+insecure" } var ( userpass *url.Userinfo userwopass *url.Userinfo ) if pass == "" { userpass = url.User(user) userwopass = userpass } else { userpass = url.UserPassword(user, pass) userwopass = url.UserPassword(user, strings.Repeat("*", len(pass))) } uri := url.URL{ Scheme: scheme, Host: host, User: userpass, } clean := url.URL{ Scheme: scheme, Host: host, User: userwopass, } wizard.imapStr.Text("Connection URL: " + strings.ReplaceAll(clean.String(), "%2A", "*")) wizard.imapUrl = uri return uri } func (wizard *AccountWizard) smtpUri() url.URL { host := wizard.smtpServer.String() user := wizard.smtpUsername.String() pass := wizard.smtpPassword.String() var scheme string switch wizard.smtpMode { case SMTP_OVER_TLS: scheme = "smtps" case SMTP_STARTTLS: scheme = "smtp" case SMTP_INSECURE: scheme = "smtp+insecure" } var ( userpass *url.Userinfo userwopass *url.Userinfo ) if pass == "" { userpass = url.User(user) userwopass = userpass } else { userpass = url.UserPassword(user, pass) userwopass = url.UserPassword(user, strings.Repeat("*", len(pass))) } uri := url.URL{ Scheme: scheme, Host: host, User: userpass, } clean := url.URL{ Scheme: scheme, Host: host, User: userwopass, } wizard.smtpStr.Text("Connection URL: " + strings.ReplaceAll(clean.String(), "%2A", "*")) wizard.smtpUrl = uri return uri } func (wizard *AccountWizard) Invalidate() { ui.Invalidate() } func (wizard *AccountWizard) Draw(ctx *ui.Context) { wizard.steps[wizard.step].Draw(ctx) } func (wizard *AccountWizard) getInteractive() []ui.Interactive { switch wizard.step { case CONFIGURE_BASICS: return wizard.basics case CONFIGURE_INCOMING: return wizard.incoming case CONFIGURE_OUTGOING: return wizard.outgoing case CONFIGURE_COMPLETE: return wizard.complete } return nil } func (wizard *AccountWizard) advance(direction string) { wizard.Focus(false) if direction == "Next" && wizard.step < len(wizard.steps)-1 { wizard.step++ } if direction == "Previous" && wizard.step > 0 { wizard.step-- } wizard.focus = 0 wizard.Focus(true) wizard.Invalidate() } func (wizard *AccountWizard) Focus(focus bool) { if interactive := wizard.getInteractive(); interactive != nil { interactive[wizard.focus].Focus(focus) } } func (wizard *AccountWizard) Event(event tcell.Event) bool { interactive := wizard.getInteractive() if event, ok := event.(*tcell.EventKey); ok { switch event.Key() { case tcell.KeyUp: fallthrough case tcell.KeyBacktab: fallthrough case tcell.KeyCtrlK: if interactive != nil { interactive[wizard.focus].Focus(false) wizard.focus-- if wizard.focus < 0 { wizard.focus = len(interactive) - 1 } interactive[wizard.focus].Focus(true) } wizard.Invalidate() return true case tcell.KeyDown: fallthrough case tcell.KeyTab: fallthrough case tcell.KeyCtrlJ: if interactive != nil { interactive[wizard.focus].Focus(false) wizard.focus++ if wizard.focus >= len(interactive) { wizard.focus = 0 } interactive[wizard.focus].Focus(true) } wizard.Invalidate() return true } } if interactive != nil { return interactive[wizard.focus].Event(event) } return false } func getSRV(host string, services []string) (string, string) { var hostport, srv string for _, srv = range services { _, addrs, err := net.LookupSRV(srv, "tcp", host) if err != nil { continue } if addrs[0].Target != "" && addrs[0].Port > 0 { hostport = net.JoinHostPort( strings.TrimSuffix(addrs[0].Target, "."), strconv.Itoa(int(addrs[0].Port))) break } } return hostport, srv }