Triage of Greptile findings on the default-Zim / configurable-directory PR:
- Stale config on restart (P1): settings update() only queues an async
background_save, and the restart switch has no ordering guarantee (the switch
worker pops LIFO), so start_kiwix_serve.sh could read the old zims_destination.
Save the config synchronously before activating the restart switch.
- YAML null (P1): read_config_value.sh now treats an unquoted null/~ as unset
(returns the default), matching PyYAML/the Python config layer. A quoted
"null" remains the literal string.
- Path traversal (P1/security): the settings API now rejects a zims_destination
containing "..", and start_kiwix_serve.sh defends in depth by falling back to
`zims` for any absolute/traversal/empty value, so Kiwix can never scan or
rewrite library.xml outside the media root.
- Reproducible build (P2): pin the zim-tools image to 3.7.0 instead of :latest.
Tests added for null handling, traversal rejection (API + script).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Two related gaps in how WROLPi serves Kiwix content:
1. A fresh WROLPi (or one whose zims are all corrupt/absent) showed a blank
Kiwix. Every image now ships a small built-in default Zim that Kiwix falls
back to, telling the user to download real Zim files.
2. The startup scripts hardcoded the `/zims` directory, ignoring wrolpi.yaml's
`zims_destination` (which the Python side already honors).
Changes:
- New wrolpi/scripts/read_config_value.sh: a zero-dependency (awk) reader so
non-Python scripts can reliably read top-level wrolpi.yaml scalars. Also a
config_value() wrapper in wrolpi/scripts/lib.sh.
- New wrolpi/scripts/default_zim/: HTML source + a reproducible builder
(ghcr.io/openzim/zim-tools) that outputs the committed wrolpi/blobs/default.zim.
- New wrolpi/blobs/: any committed blob here is copied to /opt/wrolpi-blobs by
the pi-gen and debian-live builds; the Docker zim image bakes it in.
- start_kiwix_serve.sh honors zims_destination and falls back to the default
Zim when no functioning zim is found.
- docker/zim/entrypoint.sh gains the same default-Zim fallback. It needs no
config read: it already scans the whole mounted media dir, and
zims_destination is always a subdirectory of that mount.
- Changing zims_destination via the settings API now restarts Kiwix so it
serves the new directory without a reboot.
Tests: new test_read_config_value.py, extended test_start_kiwix_serve.py
(configured dir + default-Zim fallback), and a root_api test for the restart.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
