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merged 1 commit into from
Oct 11, 2022
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Do not redirect index.html to / #13729

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36 changes: 20 additions & 16 deletions components/blobserve/pkg/blobserve/blobserve.go
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Original file line number Diff line number Diff line change
Expand Up @@ -214,7 +214,7 @@ func (reg *Server) serve(w http.ResponseWriter, req *http.Request) {

// The blobFor operation's context must be independent of this request. Even if we do not
// serve this request in time, we might want to serve another from the same ref in the future.
blob, hash, err := reg.refstore.BlobFor(context.Background(), ref, false)
blobFS, hash, err := reg.refstore.BlobFor(context.Background(), ref, false)
if err == errdefs.ErrNotFound {
http.Error(w, fmt.Sprintf("image %s not found: %q", html.EscapeString(ref), err), http.StatusNotFound)
return
Expand Down Expand Up @@ -245,39 +245,43 @@ func (reg *Server) serve(w http.ResponseWriter, req *http.Request) {
w.Header().Set("Cache-Control", "no-cache")
}

var fs http.FileSystem = blobFS
if workdir != "" {
fs = prefixingFilesystem{Prefix: workdir, FS: blobFS}
}

// http.FileServer has a special case where ServeFile redirects any request where r.URL.Path
// ends in "/index.html" to the same path, without the final "index.html".
// We do not want this behaviour to make the gitpod-ide-index mechanism in ws-proxy work.
imagePath := strings.TrimPrefix(req.URL.Path, pathPrefix)
if imagePath == "/index.html" || imagePath == "/" {
fn := filepath.Join(workdir, "index.html")

fc, err := blob.Open(fn)
resourcePath := strings.TrimPrefix(req.URL.Path, pathPrefix)
if resourcePath == "/" {
resourcePath = "/index.html"
}
if strings.HasSuffix(resourcePath, "/index.html") {
fc, err := fs.Open(resourcePath)
if err != nil {
log.WithError(err).WithField("fn", fn).Error("cannot stat index.html")
log.WithError(err).WithField("fn", resourcePath).Error("cannot open resource")
http.Error(w, http.StatusText(http.StatusNotFound), http.StatusNotFound)
return
}
defer fc.Close()

var modTime time.Time
if s, err := fc.Stat(); err == nil {
modTime = s.ModTime()
stat, err := fc.Stat()
if err != nil {
log.WithError(err).WithField("fn", resourcePath).Error("cannot stat resource")
http.Error(w, http.StatusText(http.StatusNotFound), http.StatusNotFound)
return
}

content, err := inlineVars(req, fc, inlineReplacements)
if err != nil {
log.WithError(err).Error()
}
http.ServeContent(w, req, "index.html", modTime, content)

http.ServeContent(w, req, stat.Name(), stat.ModTime(), content)
return
}

var fs http.FileSystem
fs = blob
if workdir != "" {
fs = prefixingFilesystem{Prefix: workdir, FS: fs}
}
http.StripPrefix(pathPrefix, http.FileServer(fs)).ServeHTTP(w, req)
}

Expand Down