1
0
Fork 0
miniflux/ui/proxy.go

62 lines
1.4 KiB
Go
Raw Normal View History

2017-11-19 21:10:04 -08:00
// Copyright 2017 Frédéric Guillot. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
2018-10-07 18:42:43 -07:00
package ui // import "miniflux.app/ui"
2017-11-19 21:10:04 -08:00
import (
"encoding/base64"
"errors"
"io/ioutil"
"net/http"
2017-11-19 21:10:04 -08:00
"time"
2017-11-21 23:09:01 -08:00
2018-08-24 21:51:50 -07:00
"miniflux.app/crypto"
"miniflux.app/http/client"
"miniflux.app/http/request"
"miniflux.app/http/response"
"miniflux.app/http/response/html"
2017-11-19 21:10:04 -08:00
)
func (h *handler) imageProxy(w http.ResponseWriter, r *http.Request) {
2018-10-07 18:42:43 -07:00
// If we receive a "If-None-Match" header, we assume the image is already stored in browser cache.
if r.Header.Get("If-None-Match") != "" {
2018-10-07 18:42:43 -07:00
w.WriteHeader(http.StatusNotModified)
2017-11-21 23:09:01 -08:00
return
}
encodedURL := request.RouteStringParam(r, "encodedURL")
2017-11-19 21:10:04 -08:00
if encodedURL == "" {
2018-10-07 18:42:43 -07:00
html.BadRequest(w, r, errors.New("No URL provided"))
2017-11-19 21:10:04 -08:00
return
}
decodedURL, err := base64.URLEncoding.DecodeString(encodedURL)
2017-11-19 21:10:04 -08:00
if err != nil {
2018-10-07 18:42:43 -07:00
html.BadRequest(w, r, errors.New("Unable to decode this URL"))
2017-11-19 21:10:04 -08:00
return
}
2018-04-28 10:51:07 -07:00
clt := client.New(string(decodedURL))
resp, err := clt.Get()
2017-11-19 21:10:04 -08:00
if err != nil {
2018-10-07 18:42:43 -07:00
html.ServerError(w, r, err)
2017-11-19 21:10:04 -08:00
return
}
2017-11-21 23:09:01 -08:00
if resp.HasServerFailure() {
2018-10-07 18:42:43 -07:00
html.NotFound(w, r)
2017-11-19 21:10:04 -08:00
return
}
body, _ := ioutil.ReadAll(resp.Body)
2018-01-02 19:15:08 -08:00
etag := crypto.HashFromBytes(body)
2017-11-19 21:10:04 -08:00
2018-10-07 18:42:43 -07:00
response.New(w ,r).WithCaching(etag, 72*time.Hour, func(b *response.Builder) {
b.WithHeader("Content-Type", resp.ContentType)
b.WithBody(body)
b.WithoutCompression()
b.Write()
})
2017-11-19 21:10:04 -08:00
}