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