2019-12-02 16:58:19 +00:00
|
|
|
package koushin
|
|
|
|
|
|
|
|
import (
|
2019-12-02 17:21:45 +00:00
|
|
|
"sort"
|
|
|
|
|
2019-12-02 16:58:19 +00:00
|
|
|
"github.com/emersion/go-imap"
|
|
|
|
imapclient "github.com/emersion/go-imap/client"
|
|
|
|
)
|
|
|
|
|
|
|
|
func (s *Server) connectIMAP() (*imapclient.Client, error) {
|
|
|
|
var c *imapclient.Client
|
|
|
|
var err error
|
|
|
|
if s.imap.tls {
|
|
|
|
c, err = imapclient.DialTLS(s.imap.host, nil)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
c, err = imapclient.Dial(s.imap.host)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
if !s.imap.insecure {
|
|
|
|
if err := c.StartTLS(nil); err != nil {
|
|
|
|
c.Close()
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return c, err
|
|
|
|
}
|
|
|
|
|
|
|
|
func listMailboxes(conn *imapclient.Client) ([]*imap.MailboxInfo, error) {
|
|
|
|
ch := make(chan *imap.MailboxInfo, 10)
|
|
|
|
done := make(chan error, 1)
|
|
|
|
go func () {
|
|
|
|
done <- conn.List("", "*", ch)
|
|
|
|
}()
|
|
|
|
|
|
|
|
var mailboxes []*imap.MailboxInfo
|
|
|
|
for mbox := range ch {
|
|
|
|
mailboxes = append(mailboxes, mbox)
|
|
|
|
}
|
|
|
|
|
|
|
|
if err := <-done; err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
|
2019-12-02 17:21:45 +00:00
|
|
|
sort.Slice(mailboxes, func(i, j int) bool {
|
|
|
|
return mailboxes[i].Name < mailboxes[j].Name
|
|
|
|
})
|
2019-12-02 16:58:19 +00:00
|
|
|
return mailboxes, nil
|
|
|
|
}
|
2019-12-02 17:21:45 +00:00
|
|
|
|
|
|
|
func listMessages(conn *imapclient.Client, mboxName string) ([]*imap.Message, error) {
|
|
|
|
mbox := conn.Mailbox()
|
|
|
|
if mbox == nil || mbox.Name != mboxName {
|
|
|
|
var err error
|
|
|
|
mbox, err = conn.Select(mboxName, false)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
n := uint32(10)
|
|
|
|
from := uint32(1)
|
|
|
|
to := mbox.Messages
|
|
|
|
if mbox.Messages > n {
|
|
|
|
from = mbox.Messages - n
|
|
|
|
}
|
|
|
|
seqSet := new(imap.SeqSet)
|
|
|
|
seqSet.AddRange(from, to)
|
|
|
|
|
|
|
|
ch := make(chan *imap.Message, 10)
|
|
|
|
done := make(chan error, 1)
|
|
|
|
go func() {
|
|
|
|
done <- conn.Fetch(seqSet, []imap.FetchItem{imap.FetchEnvelope}, ch)
|
|
|
|
}()
|
|
|
|
|
|
|
|
msgs := make([]*imap.Message, 0, n)
|
|
|
|
for msg := range ch {
|
|
|
|
msgs = append(msgs, msg)
|
|
|
|
}
|
|
|
|
|
|
|
|
if err := <-done; err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
|
|
|
|
// Reverse list of messages
|
|
|
|
for i := len(msgs)/2-1; i >= 0; i-- {
|
|
|
|
opp := len(msgs)-1-i
|
|
|
|
msgs[i], msgs[opp] = msgs[opp], msgs[i]
|
|
|
|
}
|
|
|
|
|
|
|
|
return msgs, nil
|
|
|
|
}
|