// headToAddy parses a header containing email addresses
func headToAddy(h mail.Header, header string) (addys []string) {
_, exists := h[header]
if !exists {
return
}
addyList, err := h.AddressList(header)
if err != nil {
Warn.Printf("Failed to parse header: %s", header)
}
for _, addy := range addyList {
addys = append(addys, addy.Address)
}
return
}
// parseFrom takes a mail address of the format Name <name@foo> and validates
// it. If custom From headers are not allowed, it will be tweaked to conform
// with the Remailer's configuration.
func parseFrom(h mail.Header) []string {
from, err := h.AddressList("From")
if err != nil {
// The supplied address is invalid. Use defaults instead.
return []string{fmt.Sprintf(
"%s <%s>",
cfg.Mail.OutboundName,
cfg.Mail.OutboundAddy,
)}
}
if len(from) == 0 {
// The address list is empty so return defaults
return []string{fmt.Sprintf(
"%s <%s>",
cfg.Mail.OutboundName,
cfg.Mail.OutboundAddy,
)}
}
if cfg.Mail.CustomFrom {
// Accept whatever was provided (it's already been validated by
// AddressList).
return []string{fmt.Sprintf(
"%s <%s>",
from[0].Name,
from[0].Address,
)}
}
if len(from[0].Name) == 0 {
return []string{fmt.Sprintf(
"%s <%s>",
cfg.Mail.OutboundName,
cfg.Mail.OutboundAddy,
)}
}
return []string{fmt.Sprintf(
"%s <%s>",
from[0].Name,
cfg.Mail.OutboundAddy,
)}
}