forked from emersion/go-imap
/
envelope.go
50 lines (41 loc) · 1.18 KB
/
envelope.go
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package backendutil
import (
"strings"
"github.com/emersion/go-imap"
"github.com/emersion/go-message"
"github.com/emersion/go-message/mail"
)
func headerAddressList(h mail.Header, key string) ([]*imap.Address, error) {
addrs, err := h.AddressList(key)
list := make([]*imap.Address, len(addrs))
for i, a := range addrs {
parts := strings.SplitN(a.Address, "@", 2)
mailbox := parts[0]
var hostname string
if len(parts) == 2 {
hostname = parts[1]
}
list[i] = &imap.Address{
PersonalName: a.Name,
MailboxName: mailbox,
HostName: hostname,
}
}
return list, err
}
// FetchEnvelope returns a message's envelope from its header.
func FetchEnvelope(h message.Header) (*imap.Envelope, error) {
mh := mail.Header{h}
env := new(imap.Envelope)
env.Date, _ = mh.Date()
env.Subject, _ = mh.Subject()
env.From, _ = headerAddressList(mh, "From")
env.Sender, _ = headerAddressList(mh, "Sender")
env.ReplyTo, _ = headerAddressList(mh, "Reply-To")
env.To, _ = headerAddressList(mh, "To")
env.Cc, _ = headerAddressList(mh, "Cc")
env.Bcc, _ = headerAddressList(mh, "Bcc")
env.InReplyTo = mh.Get("In-Reply-To")
env.MessageId = mh.Get("Message-Id")
return env, nil
}