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[tofuproxy.git] / 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 }