rounds/denyFonts.go

   1 /*
   2 tofuproxy -- HTTP proxy with TLS certificates management
   3 Copyright (C) 2021 Sergey Matveev <stargrave@stargrave.org>
   4
   5 This program is free software: you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation, version 3 of the License.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 GNU General Public License for more details.
  13
  14 You should have received a copy of the GNU General Public License
  15 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16 */
  17
  18 package rounds
  19
  20 import (
  21         "fmt"
  22         "net/http"
  23
  24         "go.stargrave.org/tofuproxy/fifos"
  25 )
  26
  27 func RoundDenyFonts(
  28         host string,
  29         resp *http.Response,
  30         w http.ResponseWriter,
  31         req *http.Request,
  32 ) (bool, error) {
  33         switch resp.Header.Get("Content-Type") {
  34         case "application/font-woff", "application/font-sfnt":
  35                 // Those are deprecated types
  36                 fallthrough
  37         case "font/otf", "font/ttf", "font/woff", "font/woff2":
  38                 http.NotFound(w, req)
  39                 fifos.SinkOther <- fmt.Sprintf(
  40                         "%s %s\t%d\tdeny fonts",
  41                         req.Method,
  42                         req.URL.String(),
  43                         http.StatusNotFound,
  44                 )
  45                 resp.Body.Close()
  46                 return false, nil
  47         }
  48         return true, nil
  49 }