package send
import (
"fmt"
"math/rand"
"net/url"
"os"
"strconv"
"strings"
"github.com/emersion/go-message/mail"
)
func parseScheme(uri *url.URL) (protocol string, auth string, err error) {
protocol = ""
auth = "plain"
if uri.Scheme != "" {
parts := strings.Split(uri.Scheme, "+")
switch len(parts) {
case 1:
protocol = parts[0]
case 2:
if parts[1] == "insecure" {
protocol = uri.Scheme
} else {
protocol = parts[0]
auth = parts[1]
}
case 3:
protocol = parts[0] + "+" + parts[1]
auth = parts[2]
default:
return "", "", fmt.Errorf("Unknown scheme %s", uri.Scheme)
}
}
return protocol, auth, nil
}
func GetMessageIdHostname(sendWithHostname bool, from *mail.Address) (string, error) {
if sendWithHostname {
return os.Hostname()
}
if from == nil {
// no from address present, generate a random hostname
return strings.ToUpper(strconv.FormatInt(rand.Int63(), 36)), nil
}
_, domain, found := strings.Cut(from.Address, "@")
if !found {
return "", fmt.Errorf("Invalid address %q", from)
}
return domain, nil
}
