The File Browser preview and Attachments preview share openFilePreview(),
but the workspace branch (via /file-content) misclassified several types the
attachments viewer handled fine:
- SVG was reported as type:image, but file-raw serves SVG as octet-stream +
attachment (XSS hardening), so the <img> broke. Now fetched and rendered via
a same-origin image/svg+xml blob <img> (safe; <img> never runs SVG scripts).
file-raw's SVG hardening is unchanged.
- Audio (mp3/wav/ogg/m4a/aac/flac/opus) was type:binary -> "Cannot preview".
Now classified as audio and rendered with <audio controls>; file-raw gained
the matching audio/video MIME types so playback works.
- Binary formats not in the hardcoded list (xlsx/doc/zip/...) were decoded as
UTF-8 and dumped as mojibake. Replaced the static list with a NUL-byte
content sniff that flags arbitrary binaries; the binary fallback now offers a
Download link instead of dead-ending.
Adds route tests for audio, known-binary (xlsx), and NUL-sniff classification.
Verified end-to-end on an isolated instance + headless browser.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Codeman maintainer
b7ff54b2ec