// Handler is the main loop that handles incoming mail - It satisfies the DeliverFunc
// interface required by imapclient but is a method attached to a set of rich state
// objects.
func (eng *Engine) Handler(r io.ReadSeeker, uid uint32, sha1 []byte) error {
thismail, err := email.NewEmailFromReader(r)
if err != nil {
r.Seek(0, 0)
ioutil.ReadAll(r)
erroneousBody, err2 := ioutil.ReadAll(r)
if err2 != nil {
panic("Error getting body from bad email, to report actual error: " + err2.Error())
}
log15.Error("Received email but failed to parse", log15.Ctx{"context": "imap", "error": err, "email": string(erroneousBody)})
return err
}
// Check for header indicating this was sent BY the list to itself (common pattern)
if thismail.Headers.Get("sent-from-listless") == eng.Config.ListAddress {
log15.Info("Received mail with a sent-from-listless header matching own. Ignoring.", log15.Ctx{"context": "imap"})
return nil
}
log15.Info("Received mail addressed to..", log15.Ctx{"context": "imap", "to": strings.Join(thismail.To, ", ")})
luaMail := WrapEmail(thismail)
if luaMail == nil || !luaMail.isValid() {
log15.Error("Received email but failed to wrap", log15.Ctx{"context": "imap", "error": ErrEmailInvalid, "email": thismail})
return ErrEmailInvalid
}
log15.Info("Email about to be processed", log15.Ctx{"context": "imap", "email": luaMail})
ok, err := eng.ProcessMail(luaMail)
if err != nil {
log15.Error("Error calling ProcessMail handler", log15.Ctx{"context": "lua", "error": err})
return err
}
if !ok {
log15.Debug("No error occurred, but not sending message on instruction from Lua", log15.Ctx{"context": "smtp"})
return nil
}
// Verify that using the actual sender is OK according to SPF records for
// sender Domain, otherwise fall back to list address.
newSender := eng.ChooseListSenderEmail(luaMail.Sender)
if newSender != luaMail.Sender {
log15.Info("Outgoing email sender changed for SPF policy", log15.Ctx{"context": "smtp", "original": luaMail.Sender, "new": newSender})
}
luaMail.Email.From = newSender
log15.Info("Outgoing email", log15.Ctx{"context": "smtp", "subject": luaMail.Subject})
// Set header to indicate that this was sent by Listless, in case it loops around
// somehow (some lists retain the "To: <*****@*****.**>" header unchanged).
luaMail.Headers.Set("sent-from-listless", eng.Config.ListAddress)
auth := smtp.PlainAuth("", eng.Config.SMTPUsername, eng.Config.SMTPPassword, eng.Config.SMTPHost)
//auth := smtp.PlainAuth(eng.Config.SMTPUsername, eng.Config.SMTPUsername, eng.Config.SMTPPassword, eng.Config.SMTPHost)
// Patched to allow excluding of variadic emails added after auth.
err = luaMail.Send(eng.Config.smtpAddr, auth, eng.Config.ListAddress)
if err != nil {
log15.Error("Error sending message by SMTP", log15.Ctx{"context": "smtp", "error": err})
return err
}
log15.Info("Sent message successfully", log15.Ctx{"context": "smtp", "subject": luaMail.Subject})
return nil
}
// API_Import_Email allows for the importing of email.
// Returns a Message object
func API_Import_Email(w http.ResponseWriter, r *http.Request) {
if r.Method != "POST" {
JSONResponse(w, models.Response{Success: false, Message: "Method not allowed"}, http.StatusBadRequest)
return
}
ir := struct {
Content string `json:"content"`
ConvertLinks bool `json:"convert_links"`
}{}
err := json.NewDecoder(r.Body).Decode(&ir)
if err != nil {
JSONResponse(w, models.Response{Success: false, Message: "Error decoding JSON Request"}, http.StatusBadRequest)
return
}
e, err := email.NewEmailFromReader(strings.NewReader(ir.Content))
if err != nil {
Logger.Println(err)
}
// If the user wants to convert links to point to
// the landing page, let's make it happen by changing up
// e.HTML
if ir.ConvertLinks {
d, err := goquery.NewDocumentFromReader(bytes.NewReader(e.HTML))
if err != nil {
JSONResponse(w, models.Response{Success: false, Message: err.Error()}, http.StatusBadRequest)
return
}
d.Find("a").Each(func(i int, a *goquery.Selection) {
a.SetAttr("href", "{{.URL}}")
})
h, err := d.Html()
if err != nil {
JSONResponse(w, models.Response{Success: false, Message: err.Error()}, http.StatusInternalServerError)
return
}
e.HTML = []byte(h)
}
er := emailResponse{
Subject: e.Subject,
Text: string(e.Text),
HTML: string(e.HTML),
}
JSONResponse(w, er, http.StatusOK)
return
}
// API_Import_Email allows for the importing of email.
// Returns a Message object
func API_Import_Email(w http.ResponseWriter, r *http.Request) {
if r.Method != "POST" {
JSONResponse(w, models.Response{Success: false, Message: "Method not allowed"}, http.StatusBadRequest)
return
}
defer r.Body.Close()
e, err := email.NewEmailFromReader(r.Body)
if err != nil {
Logger.Println(err)
}
er := emailResponse{
Subject: e.Subject,
Text: string(e.Text),
HTML: string(e.HTML),
}
JSONResponse(w, er, http.StatusOK)
return
}
func (g *Gmuch) getMessage(m *notmuch.Message) (*model.Message, error) {
msg := &model.Message{
ID: m.ID(),
ThreadID: m.ThreadID(),
Emails: make([]*email.Email, 0, 1),
}
var fn string
fns := m.Filenames()
for fns.Next(&fn) {
f, err := os.Open(fn)
if err != nil {
g.logger.Log(
"method", "getMessage",
"messageID", msg.ID,
"operation", "open email file",
"path", fn,
"error", err,
)
return nil, err
}
defer f.Close()
e, err := email.NewEmailFromReader(f)
if err != nil {
g.logger.Log(
"method", "getMessage",
"messageID", msg.ID,
"operation", "parse email file",
"path", fn,
"error", err,
)
return nil, err
}
msg.Emails = append(msg.Emails, e)
}
tags := m.Tags()
tag := ¬much.Tag{}
for tags.Next(tag) {
msg.Tags = append(msg.Tags, tag.String())
}
return msg, nil
}
