2 tofuproxy -- HTTP proxy with TLS certificates management
3 Copyright (C) 2021 Sergey Matveev <stargrave@stargrave.org>
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.
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.
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/>.
26 "go.stargrave.org/tofuproxy/fifos"
29 var imageExts = map[string]struct{}{
46 func isNewsboat(req *http.Request) bool {
47 return strings.Contains(req.Header.Get("User-Agent"), "newsboat/")
50 func RoundRedirectHTML(
53 w http.ResponseWriter,
56 if req.Method != http.MethodGet {
60 switch resp.StatusCode {
61 case http.StatusMovedPermanently, http.StatusPermanentRedirect:
62 redirType = "permanent"
63 case http.StatusFound, http.StatusSeeOther, http.StatusTemporaryRedirect:
67 if _, ok := imageExts[filepath.Ext(req.URL.Path)]; ok {
70 redirType = "temporary"
75 w.Header().Add("Content-Type", "text/html")
76 w.WriteHeader(http.StatusOK)
77 location := resp.Header.Get("Location")
80 `<html><head><title>%d %s: %s redirection</title></head>
81 <body>Redirection to <a href="%s">%s</a></body></html>`,
82 resp.StatusCode, http.StatusText(resp.StatusCode),
83 redirType, location, location,
85 fifos.SinkRedir <- fmt.Sprintf(
86 "%s %s\t%s\t%s", req.Method, resp.Status, req.URL.String(), location,