func (s *server) ServeBlob(w http.ResponseWriter, r *http.Request) {
if r.ParseForm() != nil {
log.Printf("Could not parse form: %+v", r)
http.Error(w, "Bad request", http.StatusBadRequest)
return
}
base := path.Base(r.URL.Path)
parts := strings.SplitN(base, "-", 2)
if len(parts) != 2 {
log.Printf("Invalid blob path: %q", r.URL.Path)
http.Error(w, "Bad request", http.StatusBadRequest)
return
}
hexKey, encSHA1 := parts[0], parts[1]
all, err := s.storage.EncryptedEmail(hexKey, encSHA1)
if err != nil {
http.NotFound(w, r)
return
}
decryptKey := r.Form.Get("decrypt")
if decryptKey == "" {
w.Header().Add("Content-Type", "application/octet-stream")
w.Write(all)
return
}
addr := webfist.NewEmailAddr(decryptKey)
decrypted, err := ioutil.ReadAll(addr.Decrypter(bytes.NewReader(all)))
if err != nil {
http.Error(w, "Could not decrypt blob", http.StatusInternalServerError)
return
}
w.Header().Add("Content-Type", "text/plain; charset=utf-8")
w.Header().Add("Access-Control-Allow-Origin", "*")
w.Write(decrypted)
}
func (l *emailLookup) WebFinger(addr string) (*webfist.WebFingerResponse, error) {
emailAddr := webfist.NewEmailAddr(addr)
emailList, err := l.storage.Emails(emailAddr)
if err != nil {
return nil, err
}
if len(emailList) == 0 {
return nil, nil
}
sort.Sort(byEmailDate(emailList))
lastEmail := emailList[len(emailList)-1]
// TODO: Garbage collect old emails
delegationURL, err := lastEmail.WebFist()
if err != nil {
return nil, err
}
encSHA1, err := lastEmail.EncSHA1()
if err != nil {
return nil, err
}
proofURL := fmt.Sprintf("%s/webfist/proof/%s-%s?decrypt=%s", *baseURL, emailAddr.HexKey(), encSHA1, url.QueryEscape(emailAddr.Canonical()))
resp := &webfist.WebFingerResponse{
Subject: emailAddr.Canonical(),
Links: []webfist.Link{
{
Rel: "http://webfist.org/spec/rel",
Href: delegationURL,
Properties: map[string]string{
"http://webfist.org/spec/proof": proofURL,
},
},
},
}
return resp, nil
}
func (s *server) onNewMail(conn smtpd.Connection, from smtpd.MailAddress) (smtpd.Envelope, error) {
log.Printf("smtp: new mail from %s", from.Email())
return &env{s: s, from: webfist.NewEmailAddr(from.Email())}, nil
}