aerc/worker/imap/imap.go
Leszek Cimała e84e402e48 decode(RFC 2047) imap headers to fix encoding in subject & filenames
Me again,
this time fixing encoding of subjects and attachments. It was problem in
IMAP backend. While other backends user MessageInfo() function which
generates MessageInfo decoded via go-message methodes, IMAP worker is
creating MessageInfo directly, so all non-utf8 subjects and filenames
were in raw form.

This patch fixes it. Not sure if we should care about errors (if
DecodeHeader fails it returns raw string back).

>From what I see, this should solve all encoding problem (tested only
IMAP). So, now I can focus on features. ;-)

Have a great weekend!
Leszek
2019-12-07 14:30:33 -05:00

108 lines
2.5 KiB
Go

package imap
import (
"github.com/emersion/go-imap"
"git.sr.ht/~sircmpwn/aerc/models"
"github.com/emersion/go-message/charset"
)
func toSeqSet(uids []uint32) *imap.SeqSet {
var set imap.SeqSet
for _, uid := range uids {
set.AddNum(uid)
}
return &set
}
func translateBodyStructure(bs *imap.BodyStructure) *models.BodyStructure {
if bs == nil {
return nil
}
var parts []*models.BodyStructure
for _, part := range bs.Parts {
parts = append(parts, translateBodyStructure(part))
}
// we need to decode, because imap store do not use MessageInfo()
// which do it via go-message
desc, _ := charset.DecodeHeader(bs.Description)
params := map[string]string{}
for k, v := range bs.Params {
params[k], _ = charset.DecodeHeader(v)
}
dispParams := map[string]string{}
for k, v := range bs.DispositionParams {
dispParams[k], _ = charset.DecodeHeader(v)
}
// TODO: is that all?
return &models.BodyStructure{
MIMEType: bs.MIMEType,
MIMESubType: bs.MIMESubType,
Params: params,
Description: desc,
Encoding: bs.Encoding,
Parts: parts,
Disposition: bs.Disposition,
DispositionParams: dispParams,
}
}
func translateEnvelope(e *imap.Envelope) *models.Envelope {
if e == nil {
return nil
}
// TODO: where we should send error?
subject, _ := charset.DecodeHeader(e.Subject)
return &models.Envelope{
Date: e.Date,
Subject: subject,
From: translateAddresses(e.From),
ReplyTo: translateAddresses(e.ReplyTo),
To: translateAddresses(e.To),
Cc: translateAddresses(e.Cc),
Bcc: translateAddresses(e.Bcc),
MessageId: e.MessageId,
}
}
func translateAddress(a *imap.Address) *models.Address {
if a == nil {
return nil
}
personalName, _ := charset.DecodeHeader(a.PersonalName)
return &models.Address{
Name: personalName,
Mailbox: a.MailboxName,
Host: a.HostName,
}
}
func translateAddresses(addrs []*imap.Address) []*models.Address {
var converted []*models.Address
for _, addr := range addrs {
converted = append(converted, translateAddress(addr))
}
return converted
}
var flagMap = map[string]models.Flag{
imap.SeenFlag: models.SeenFlag,
imap.RecentFlag: models.RecentFlag,
imap.AnsweredFlag: models.AnsweredFlag,
imap.DeletedFlag: models.DeletedFlag,
imap.FlaggedFlag: models.FlaggedFlag,
}
func translateFlags(imapFlags []string) []models.Flag {
var flags []models.Flag
for _, imapFlag := range imapFlags {
if flag, ok := flagMap[imapFlag]; ok {
flags = append(flags, flag)
}
}
return flags
}