Monorepo for Tangled
knotmirror/xrpc: fallback to octet-stream on `git.getBlob`
Also set etag for any small contents.
Signed-off-by: Seongmin Lee <git@boltless.me>
authored by
Seongmin Lee
and committed by
Tangled
(Jun 11, 2026, 10:52 AM +0300)
a6167d9c
e210539c
+10
-9
+10
-9
knotmirror/xrpc/git_get_blob.go
+10
-9
knotmirror/xrpc/git_get_blob.go
···
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return
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}
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+
eTag := fmt.Sprintf("\"%x\"", sha256.Sum256(contents))
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if clientETag := r.Header.Get("If-None-Match"); clientETag == eTag {
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w.WriteHeader(http.StatusNotModified)
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return
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}
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w.Header().Set("ETag", eTag)
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w.Header().Set("X-Content-Type-Options", "nosniff")
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+
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mimeType := http.DetectContentType(contents)
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// override MIME types for formats that http.DetectContentType does not recognize
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switch filepath.Ext(path) {
···
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switch {
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case strings.HasPrefix(mimeType, "image/"), strings.HasPrefix(mimeType, "video/"):
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eTag := fmt.Sprintf("\"%x\"", sha256.Sum256(contents))
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if clientETag := r.Header.Get("If-None-Match"); clientETag == eTag {
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w.WriteHeader(http.StatusNotModified)
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return
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}
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w.Header().Set("ETag", eTag)
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w.Header().Set("Content-Type", mimeType)
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case strings.HasPrefix(mimeType, "text/") || isTextualMimeType(mimeType):
···
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w.Header().Set("Content-Type", "text/plain; charset=utf-8")
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default:
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l.Error("attempted to serve disallowed file type", "mimetype", mimeType)
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writeJson(w, http.StatusInternalServerError, atclient.ErrorBody{Name: "InvalidRequest", Message: "only image, video, and text files can be accessed directly"})
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return
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// fallback to octet-stream
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w.Header().Set("Content-Type", "application/octet-stream")
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}
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w.Write(contents)
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}