package compose import ( "crypto/tls" "errors" "fmt" "net/mail" "net/url" "strings" "github.com/emersion/go-sasl" "github.com/emersion/go-smtp" "git.sr.ht/~sircmpwn/aerc2/widgets" ) func init() { register("send-message", SendMessage) } func SendMessage(aerc *widgets.Aerc, args []string) error { if len(args) > 1 { return errors.New("Usage: send-message") } composer, _ := aerc.SelectedTab().(*widgets.Composer) config := composer.Config() if config.Outgoing == "" { return errors.New( "No outgoing mail transport configured for this account") } uri, err := url.Parse(config.Outgoing) if err != nil { return err } var ( scheme string auth string = "plain" ) parts := strings.Split(uri.Scheme, "+") if len(parts) == 1 { scheme = parts[0] } else if len(parts) == 2 { scheme = parts[0] auth = parts[1] } else { return fmt.Errorf("Unknown transfer protocol %s", uri.Scheme) } header, rcpts, err := composer.Header() if err != nil { return err } if config.From == "" { return errors.New("No 'From' configured for this account") } from, err := mail.ParseAddress(config.From) if err != nil { return err } var ( saslClient sasl.Client conn *smtp.Client ) switch auth { case "": fallthrough case "none": saslClient = nil case "plain": password, _ := uri.User.Password() saslClient = sasl.NewPlainClient("", uri.User.Username(), password) default: return fmt.Errorf("Unsupported auth mechanism %s", auth) } tlsConfig := &tls.Config{ // TODO: ask user first InsecureSkipVerify: true, } switch scheme { case "smtp": host := uri.Host if !strings.ContainsRune(host, ':') { host = host + ":587" // Default to submission port } conn, err = smtp.Dial(host) if err != nil { return err } defer conn.Close() if sup, _ := conn.Extension("STARTTLS"); sup { // TODO: let user configure tls? if err = conn.StartTLS(tlsConfig); err != nil { return err } } case "smtps": host := uri.Host if !strings.ContainsRune(host, ':') { host = host + ":465" // Default to smtps port } conn, err = smtp.DialTLS(host, tlsConfig) if err != nil { return err } defer conn.Close() } // TODO: sendmail if saslClient != nil { if err = conn.Auth(saslClient); err != nil { return err } } // TODO: the user could conceivably want to use a different From and sender if err = conn.Mail(from.Address); err != nil { return err } for _, rcpt := range rcpts { if err = conn.Rcpt(rcpt); err != nil { return err } } wc, err := conn.Data() if err != nil { return err } defer wc.Close() composer.WriteMessage(header, wc) composer.Close() aerc.RemoveTab(composer) return nil }