First commit

server/ui/controller/proxy.go

@@ -0,0 +1,49 @@
+// 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 controller
+
+import (
+	"encoding/base64"
+	"errors"
+	"github.com/miniflux/miniflux2/helper"
+	"github.com/miniflux/miniflux2/server/core"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"time"
+)
+
+func (c *Controller) ImageProxy(ctx *core.Context, request *core.Request, response *core.Response) {
+	encodedURL := request.GetStringParam("encodedURL", "")
+	if encodedURL == "" {
+		response.Html().BadRequest(errors.New("No URL provided"))
+		return
+	}
+
+	decodedURL, err := base64.StdEncoding.DecodeString(encodedURL)
+	if err != nil {
+		response.Html().BadRequest(errors.New("Unable to decode this URL"))
+		return
+	}
+
+	resp, err := http.Get(string(decodedURL))
+	if err != nil {
+		log.Println(err)
+		response.Html().NotFound()
+		return
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		response.Html().NotFound()
+		return
+	}
+
+	body, _ := ioutil.ReadAll(resp.Body)
+	etag := helper.HashFromBytes(body)
+	contentType := resp.Header.Get("Content-Type")
+
+	response.Cache(contentType, etag, body, 72*time.Hour)
+}