70 lines
1.9 KiB
Go
70 lines
1.9 KiB
Go
// Copyright 2020 Frédéric Guillot. All rights reserved.
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// Use of this source code is governed by the Apache 2.0
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// license that can be found in the LICENSE file.
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package proxy // import "miniflux.app/proxy"
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import (
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"crypto/hmac"
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"crypto/sha256"
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"encoding/base64"
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"net/url"
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"path"
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"miniflux.app/http/route"
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"github.com/gorilla/mux"
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"miniflux.app/config"
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)
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// ProxifyURL generates a relative URL for a proxified resource.
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func ProxifyURL(router *mux.Router, link string) string {
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if link != "" {
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proxyImageUrl := config.Opts.ProxyUrl()
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if proxyImageUrl == "" {
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mac := hmac.New(sha256.New, config.Opts.ProxyPrivateKey())
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mac.Write([]byte(link))
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digest := mac.Sum(nil)
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return route.Path(router, "proxy", "encodedDigest", base64.URLEncoding.EncodeToString(digest), "encodedURL", base64.URLEncoding.EncodeToString([]byte(link)))
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}
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proxyUrl, err := url.Parse(proxyImageUrl)
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if err != nil {
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return ""
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}
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proxyUrl.Path = path.Join(proxyUrl.Path, base64.URLEncoding.EncodeToString([]byte(link)))
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return proxyUrl.String()
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}
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return ""
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}
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// AbsoluteProxifyURL generates an absolute URL for a proxified resource.
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func AbsoluteProxifyURL(router *mux.Router, host, link string) string {
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if link != "" {
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proxyImageUrl := config.Opts.ProxyUrl()
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if proxyImageUrl == "" {
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mac := hmac.New(sha256.New, config.Opts.ProxyPrivateKey())
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mac.Write([]byte(link))
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digest := mac.Sum(nil)
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path := route.Path(router, "proxy", "encodedDigest", base64.URLEncoding.EncodeToString(digest), "encodedURL", base64.URLEncoding.EncodeToString([]byte(link)))
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if config.Opts.HTTPS {
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return "https://" + host + path
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} else {
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return "http://" + host + path
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}
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}
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proxyUrl, err := url.Parse(proxyImageUrl)
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if err != nil {
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return ""
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}
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proxyUrl.Path = path.Join(proxyUrl.Path, base64.URLEncoding.EncodeToString([]byte(link)))
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return proxyUrl.String()
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}
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return ""
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}
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