mirror of https://github.com/miniflux/v2.git
48 lines
1.3 KiB
Go
48 lines
1.3 KiB
Go
// 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.
|
|
|
|
package filter // import "miniflux.app/filter"
|
|
|
|
import (
|
|
"encoding/base64"
|
|
"strings"
|
|
|
|
"miniflux.app/config"
|
|
"miniflux.app/http/route"
|
|
"miniflux.app/url"
|
|
|
|
"github.com/PuerkitoBio/goquery"
|
|
"github.com/gorilla/mux"
|
|
)
|
|
|
|
// ImageProxyFilter rewrites image tag URLs to local proxy URL (by default only non-HTTPS URLs)
|
|
func ImageProxyFilter(router *mux.Router, cfg *config.Config, data string) string {
|
|
proxyImages := cfg.ProxyImages()
|
|
if proxyImages == "none" {
|
|
return data
|
|
}
|
|
|
|
doc, err := goquery.NewDocumentFromReader(strings.NewReader(data))
|
|
if err != nil {
|
|
return data
|
|
}
|
|
|
|
doc.Find("img").Each(func(i int, img *goquery.Selection) {
|
|
if srcAttr, ok := img.Attr("src"); ok {
|
|
if proxyImages == "all" || !url.IsHTTPS(srcAttr) {
|
|
img.SetAttr("src", Proxify(router, srcAttr))
|
|
}
|
|
}
|
|
})
|
|
|
|
output, _ := doc.Find("body").First().Html()
|
|
return output
|
|
}
|
|
|
|
// Proxify returns a proxified link.
|
|
func Proxify(router *mux.Router, link string) string {
|
|
// We use base64 url encoding to avoid slash in the URL.
|
|
return route.Path(router, "proxy", "encodedURL", base64.URLEncoding.EncodeToString([]byte(link)))
|
|
}
|