70 lines
1.8 KiB
Go
70 lines
1.8 KiB
Go
// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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package mediaproxy // import "miniflux.app/v2/internal/mediaproxy"
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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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"log/slog"
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"net/url"
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"path"
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"miniflux.app/v2/internal/http/route"
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"github.com/gorilla/mux"
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"miniflux.app/v2/internal/config"
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)
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func ProxifyRelativeURL(router *mux.Router, mediaURL string) string {
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if mediaURL == "" {
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return ""
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}
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if customProxyURL := config.Opts.MediaCustomProxyURL(); customProxyURL != "" {
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return proxifyURLWithCustomProxy(mediaURL, customProxyURL)
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}
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mac := hmac.New(sha256.New, config.Opts.MediaProxyPrivateKey())
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mac.Write([]byte(mediaURL))
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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(mediaURL)))
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}
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func ProxifyAbsoluteURL(router *mux.Router, host, mediaURL string) string {
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if mediaURL == "" {
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return ""
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}
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if customProxyURL := config.Opts.MediaCustomProxyURL(); customProxyURL != "" {
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return proxifyURLWithCustomProxy(mediaURL, customProxyURL)
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}
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proxifiedUrl := ProxifyRelativeURL(router, mediaURL)
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scheme := "http"
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if config.Opts.HTTPS {
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scheme = "https"
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}
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return scheme + "://" + host + proxifiedUrl
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}
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func proxifyURLWithCustomProxy(mediaURL, customProxyURL string) string {
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if customProxyURL == "" {
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return mediaURL
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}
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proxyUrl, err := url.Parse(customProxyURL)
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if err != nil {
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slog.Error("Incorrect custom media proxy URL",
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slog.String("custom_proxy_url", customProxyURL),
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slog.Any("error", err),
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)
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return mediaURL
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}
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proxyUrl.Path = path.Join(proxyUrl.Path, base64.URLEncoding.EncodeToString([]byte(mediaURL)))
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return proxyUrl.String()
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}
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