The web service unit has PrivateTmp=yes: its /tmp is a per-instance
namespace at /tmp/systemd-private-X-left4me-web.service-Y/tmp/ from
PID 1's perspective. When ScriptBuilder writes /tmp/tmpXXX.sh and
passes that path to the sandbox helper, systemd-run asks PID 1 to set
up BindReadOnlyPaths=${SCRIPT}:/script.sh — but PID 1 lives in the host
namespace and can't resolve the web service's PrivateTmp path. The
unit fails to start with status=226/NAMESPACE and "Failed to set up
mount namespacing: /script.sh: No such file or directory".
Move the tmpfile to ${LEFT4ME_ROOT}/sandbox-scripts/. /var/lib is not
affected by PrivateTmp (only /tmp and /var/tmp are), so PID 1 can
resolve the path. The web service has ReadWritePaths=/var/lib/left4me
already, and the directory is created on demand by Python.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
NamedTemporaryFile creates the script file at mode 0600 owned by the
left4me web user. The sandbox runs as l4d2-sandbox and bwrap bind-mounts
the file read-only at /script.sh, but the kernel still enforces the
underlying file's permissions — l4d2-sandbox can't read 0600 left4me
files, so /bin/bash /script.sh fails with "Permission denied".
Script content is not a secret (it's stored in the DB and editable by
the user), so 0644 is appropriate.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Adds ScriptBuilder that runs user-authored bash inside the
left4me-script-sandbox helper via run_command, with a 20 GB post-build
disk cap. Registry now {"workshop", "script"}.
finish_job writes Overlay.last_build_status on build_overlay completion.
Drops GlobalMapOverlayBuilder and the now-unreachable
_check_global_overlay_caches in l4d2_facade.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
The workshop + managed-global overlay surface fully covers the
admin-SFTP flow that 'external' was a placeholder for. Drop the type
from the model defaults, builder registry, routes, template, and
tests, and add migration 0004 that deletes any leftover external
rows along with their blueprint and job references.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Adds two managed system overlays (l4d2center-maps, cedapug-maps) that
fetch curated map archives from upstream sources and reconcile addons
symlinks for non-Steam maps. A daily systemd timer enqueues a coalesced
refresh_global_overlays worker job; downloads, extraction, and rebuilds
run in the existing job worker and surface in the job log UI.
Schema: GlobalOverlaySource / GlobalOverlayItem / GlobalOverlayItemFile
plus nullable Job.user_id so system jobs render as "system" in the UI.
The new builder reconciles symlinks against the per-source vpk cache
and leaves foreign symlinks untouched. Initialize-time guard refuses
to mount a partial overlay if any expected vpk is missing from cache.
Refresh service uses shutil.move to handle EXDEV when /tmp and the
cache live on different filesystems.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Adds l4d2web/services/overlay_builders.py with a BUILDERS dict mapping
Overlay.type to a builder class. ExternalBuilder is a no-op that just
ensures the overlay directory exists. WorkshopBuilder diff-applies
absolute symlinks under left4dead2/addons/ against the overlay's current
WorkshopItem associations: creates new ones, removes obsolete, leaves
unrelated files alone, and skips uncached items with a warning rather
than producing dangling symlinks.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
