1 // tofuproxy -- flexible HTTP/HTTPS proxy, TLS terminator, X.509 TOFU
2 // manager, WARC/geminispace browser
3 // Copyright (C) 2021-2024 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/>.
27 "go.stargrave.org/tofuproxy/fifos"
30 func transcodeCmd2Png(
31 contentType, ext, cmdName string,
33 w http.ResponseWriter,
36 if resp.Header.Get("Content-Type") != contentType {
39 tmpFd, err := os.CreateTemp("", "tofuproxy.*."+ext)
43 defer os.Remove(tmpFd.Name())
45 defer resp.Body.Close()
46 if _, err = io.Copy(tmpFd, resp.Body); err != nil {
47 log.Printf("Error during %s: %+v\n", req.URL, err)
51 dstFn := tmpFd.Name() + ".png"
52 cmd := exec.Command(cmdName, tmpFd.Name(), dstFn)
54 defer os.Remove(dstFn)
58 data, err := os.ReadFile(dstFn)
62 w.Header().Add("Content-Type", "image/png")
63 w.WriteHeader(http.StatusOK)
65 fifos.LogVarious <- fmt.Sprintf(
66 "%s %s\t%s transcoded to PNG", req.Method, req.URL, contentType,
71 func RoundTranscodeJXL(
74 w http.ResponseWriter,
77 return transcodeCmd2Png("image/jxl", "jxl", "djxl", resp, w, req)