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fix: use BASE_URL instead of r.Host to generate absolute media proxy URL

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This commit is contained in:
Frédéric Guillot 2024-07-29 14:46:56 -07:00
parent 4f55361f5f
commit d048d59d39
7 changed files with 53 additions and 33 deletions
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24
internal/mediaproxy/media_proxy_test.go
View file

@ -174,7 +174,7 @@ func TestAbsoluteProxyFilterWithHttpsAlways(t *testing.T) {
r.HandleFunc("/proxy/{encodedDigest}/{encodedURL}", func(w http.ResponseWriter, r *http.Request) {}).Name("proxy")
input := `<p><img src="https://website/folder/image.png" alt="Test"/></p>`
output := RewriteDocumentWithAbsoluteProxyURL(r, "localhost", input)
output := RewriteDocumentWithAbsoluteProxyURL(r, input)
expected := `<p><img src="http://localhost/proxy/LdPNR1GBDigeeNp2ArUQRyZsVqT_PWLfHGjYFrrWWIY=/aHR0cHM6Ly93ZWJzaXRlL2ZvbGRlci9pbWFnZS5wbmc=" alt="Test"/></p>`
if expected != output {
@ -182,12 +182,10 @@ func TestAbsoluteProxyFilterWithHttpsAlways(t *testing.T) {
}
}
func TestAbsoluteProxyFilterWithHttpsScheme(t *testing.T) {
func TestAbsoluteProxyFilterWithCustomPortInBaseURL(t *testing.T) {
os.Clearenv()
os.Setenv("PROXY_OPTION", "all")
os.Setenv("PROXY_MEDIA_TYPES", "image")
os.Setenv("PROXY_PRIVATE_KEY", "test")
os.Setenv("HTTPS", "1")
os.Setenv("BASE_URL", "http://example.org:88/folder/")
os.Setenv("MEDIA_PROXY_PRIVATE_KEY", "test")
var err error
parser := config.NewParser()
@ -196,12 +194,16 @@ func TestAbsoluteProxyFilterWithHttpsScheme(t *testing.T) {
t.Fatalf(`Parsing failure: %v`, err)
}
if config.Opts.BaseURL() != "http://example.org:88/folder" {
t.Fatalf(`Unexpected base URL, got "%s"`, config.Opts.BaseURL())
}
r := mux.NewRouter()
r.HandleFunc("/proxy/{encodedDigest}/{encodedURL}", func(w http.ResponseWriter, r *http.Request) {}).Name("proxy")
input := `<p><img src="https://website/folder/image.png" alt="Test"/></p>`
output := RewriteDocumentWithAbsoluteProxyURL(r, "localhost", input)
expected := `<p><img src="https://localhost/proxy/LdPNR1GBDigeeNp2ArUQRyZsVqT_PWLfHGjYFrrWWIY=/aHR0cHM6Ly93ZWJzaXRlL2ZvbGRlci9pbWFnZS5wbmc=" alt="Test"/></p>`
input := `<p><img src="http://website/folder/image.png" alt="Test"/></p>`
output := RewriteDocumentWithAbsoluteProxyURL(r, input)
expected := `<p><img src="http://example.org:88/folder/proxy/okK5PsdNY8F082UMQEAbLPeUFfbe2WnNfInNmR9T4WA=/aHR0cDovL3dlYnNpdGUvZm9sZGVyL2ltYWdlLnBuZw==" alt="Test"/></p>`
if expected != output {
t.Errorf(`Not expected output: got %q instead of %q`, output, expected)
@ -225,7 +227,7 @@ func TestAbsoluteProxyFilterWithHttpsAlwaysAndAudioTag(t *testing.T) {
r.HandleFunc("/proxy/{encodedDigest}/{encodedURL}", func(w http.ResponseWriter, r *http.Request) {}).Name("proxy")
input := `<audio src="https://website/folder/audio.mp3"></audio>`
output := RewriteDocumentWithAbsoluteProxyURL(r, "localhost", input)
output := RewriteDocumentWithAbsoluteProxyURL(r, input)
expected := `<audio src="http://localhost/proxy/EmBTvmU5B17wGuONkeknkptYopW_Tl6Y6_W8oYbN_Xs=/aHR0cHM6Ly93ZWJzaXRlL2ZvbGRlci9hdWRpby5tcDM="></audio>`
if expected != output {
@ -300,7 +302,7 @@ func TestAbsoluteProxyFilterWithHttpsAlwaysAndCustomProxyServer(t *testing.T) {
r.HandleFunc("/proxy/{encodedDigest}/{encodedURL}", func(w http.ResponseWriter, r *http.Request) {}).Name("proxy")
input := `<p><img src="https://website/folder/image.png" alt="Test"/></p>`
output := RewriteDocumentWithAbsoluteProxyURL(r, "localhost", input)
output := RewriteDocumentWithAbsoluteProxyURL(r, input)
expected := `<p><img src="https://proxy-example/proxy/aHR0cHM6Ly93ZWJzaXRlL2ZvbGRlci9pbWFnZS5wbmc=" alt="Test"/></p>`
if expected != output {

7
internal/mediaproxy/rewriter.go
View file

@ -21,11 +21,8 @@ func RewriteDocumentWithRelativeProxyURL(router *mux.Router, htmlDocument string
return genericProxyRewriter(router, ProxifyRelativeURL, htmlDocument)
}
func RewriteDocumentWithAbsoluteProxyURL(router *mux.Router, host, htmlDocument string) string {
proxifyFunction := func(router *mux.Router, url string) string {
return ProxifyAbsoluteURL(router, host, url)
}
return genericProxyRewriter(router, proxifyFunction, htmlDocument)
func RewriteDocumentWithAbsoluteProxyURL(router *mux.Router, htmlDocument string) string {
return genericProxyRewriter(router, ProxifyAbsoluteURL, htmlDocument)
}
func genericProxyRewriter(router *mux.Router, proxifyFunction urlProxyRewriter, htmlDocument string) string {

20
internal/mediaproxy/url.go
View file

@ -9,13 +9,11 @@ import (
"encoding/base64"
"log/slog"
"net/url"
"path"
"miniflux.app/v2/internal/http/route"
"github.com/gorilla/mux"
"miniflux.app/v2/internal/config"
"miniflux.app/v2/internal/http/route"
)
func ProxifyRelativeURL(router *mux.Router, mediaURL string) string {
@ -33,7 +31,7 @@ func ProxifyRelativeURL(router *mux.Router, mediaURL string) string {
return route.Path(router, "proxy", "encodedDigest", base64.URLEncoding.EncodeToString(digest), "encodedURL", base64.URLEncoding.EncodeToString([]byte(mediaURL)))
}
func ProxifyAbsoluteURL(router *mux.Router, host, mediaURL string) string {
func ProxifyAbsoluteURL(router *mux.Router, mediaURL string) string {
if mediaURL == "" {
return ""
}
@ -43,12 +41,13 @@ func ProxifyAbsoluteURL(router *mux.Router, host, mediaURL string) string {
}
proxifiedUrl := ProxifyRelativeURL(router, mediaURL)
scheme := "http"
if config.Opts.HTTPS {
scheme = "https"
absoluteURL, err := url.JoinPath(config.Opts.BaseURL(), proxifiedUrl)
if err != nil {
return mediaURL
}
return scheme + "://" + host + proxifiedUrl
return absoluteURL
}
func proxifyURLWithCustomProxy(mediaURL, customProxyURL string) string {
@ -56,7 +55,7 @@ func proxifyURLWithCustomProxy(mediaURL, customProxyURL string) string {
return mediaURL
}
proxyUrl, err := url.Parse(customProxyURL)
absoluteURL, err := url.JoinPath(customProxyURL, base64.URLEncoding.EncodeToString([]byte(mediaURL)))
if err != nil {
slog.Error("Incorrect custom media proxy URL",
slog.String("custom_proxy_url", customProxyURL),
@ -65,6 +64,5 @@ func proxifyURLWithCustomProxy(mediaURL, customProxyURL string) string {
return mediaURL
}
proxyUrl.Path = path.Join(proxyUrl.Path, base64.URLEncoding.EncodeToString([]byte(mediaURL)))
return proxyUrl.String()
return absoluteURL
}