1
0
Fork 0
miniflux/proxy/proxy.go

71 lines
1.9 KiB
Go
Raw Normal View History

2020-10-08 01:21:45 -04:00
// Copyright 2020 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 proxy // import "miniflux.app/proxy"
import (
2022-10-15 02:17:17 -04:00
"crypto/hmac"
"crypto/sha256"
2020-10-08 01:21:45 -04:00
"encoding/base64"
2022-08-29 23:33:47 -04:00
"net/url"
"path"
2020-10-08 01:21:45 -04:00
"miniflux.app/http/route"
"github.com/gorilla/mux"
2022-08-29 23:33:47 -04:00
"miniflux.app/config"
2020-10-08 01:21:45 -04:00
)
2022-10-15 02:17:17 -04:00
// ProxifyURL generates a relative URL for a proxified resource.
2020-10-08 01:21:45 -04:00
func ProxifyURL(router *mux.Router, link string) string {
2022-07-06 00:13:40 -04:00
if link != "" {
2022-08-29 23:33:47 -04:00
proxyImageUrl := config.Opts.ProxyImageUrl()
if proxyImageUrl == "" {
2022-10-15 02:17:17 -04:00
mac := hmac.New(sha256.New, config.Opts.ProxyPrivateKey())
mac.Write([]byte(link))
digest := mac.Sum(nil)
return route.Path(router, "proxy", "encodedDigest", base64.URLEncoding.EncodeToString(digest), "encodedURL", base64.URLEncoding.EncodeToString([]byte(link)))
}
proxyUrl, err := url.Parse(proxyImageUrl)
if err != nil {
return ""
}
proxyUrl.Path = path.Join(proxyUrl.Path, base64.URLEncoding.EncodeToString([]byte(link)))
return proxyUrl.String()
}
return ""
}
// AbsoluteProxifyURL generates an absolute URL for a proxified resource.
func AbsoluteProxifyURL(router *mux.Router, host, link string) string {
if link != "" {
proxyImageUrl := config.Opts.ProxyImageUrl()
if proxyImageUrl == "" {
mac := hmac.New(sha256.New, config.Opts.ProxyPrivateKey())
mac.Write([]byte(link))
digest := mac.Sum(nil)
path := route.Path(router, "proxy", "encodedDigest", base64.URLEncoding.EncodeToString(digest), "encodedURL", base64.URLEncoding.EncodeToString([]byte(link)))
if config.Opts.HTTPS {
return "https://" + host + path
} else {
return "http://" + host + path
}
2022-08-29 23:33:47 -04:00
}
proxyUrl, err := url.Parse(proxyImageUrl)
if err != nil {
return ""
}
proxyUrl.Path = path.Join(proxyUrl.Path, base64.URLEncoding.EncodeToString([]byte(link)))
return proxyUrl.String()
2022-07-06 00:13:40 -04:00
}
return ""
2020-10-08 01:21:45 -04:00
}