ac4c11b5e9
Follow-up to 928e244, which stopped configs/ subdirectories being sourced without a .category marker. That closed the hole; this removes the thing that fell into it. storageIndexFile pointed at configs/storage/app_locations. The file's requirements are only "manager-owned" and "not on a removable disk" — configs/ satisfies both, which is why I put it there, and it was still wrong: that tree carries a third property the file violates. sourceScanFiles SOURCES what it finds under configs/, and sourcing means executing. The index is a TSV of "<slug><TAB><root>", which bash reads as a command and its argument. Harmless while no slug matched a real executable. The row for the app named `libreportal` armed it, because that IS the CLI on PATH: sourcing ran `libreportal /libreportal-containers`, which re-entered the scan, which sourced the file again — one process pair per level until the host OOMed and took the desktop session with it. It now lives at $system_dir/storage/app_locations, with a one-shot migration so an install that already has an index keeps knowing where its apps live rather than silently forgetting. libreportal-ownership reconciles the new directory, and scan_files.sh gained a note that configs/storage/ carries no .category on purpose. scripts/dev/lp-configs-guard-test covers both ends: the index never lands in configs/, a legacy one migrates, and a file of the exact detonating shape placed in an unmarked configs/ subdirectory is not executed while a marked category still loads. Also wires sourceStorageLocations into the config scan beside sourceBackupLocations — per-location configs sit at depth 3, below the generic scan, and need their own walker like the backup ones do. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
509 lines
19 KiB
Bash
509 lines
19 KiB
Bash
#!/bin/bash
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#
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# LibrePortal path roots — single source of truth for the (relocatable) layout.
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#
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# Three independently-placeable roots, each owned by exactly one principal:
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# LP_SYSTEM_DIR control plane — manager (libreportal) owned, 750
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# configs/ logs/ install/ database.db ssl/ ssh/ migrate/ restore/
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# LP_CONTAINERS_DIR live app data — container user (dockerinstall) owned (rootless)
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# LP_BACKUPS_DIR restic/kopia repos — container user owned (separable / own mount)
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#
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# The roots come from the environment when set (the install bakes them into the
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# task-processor systemd unit, and the CLI/app inherit them from init.sh), else
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# they default to /libreportal-*. A custom location is chosen at INSTALL time and
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# baked by root — never read at runtime from a manager-writable config.
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#
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# SECURITY: the root-owned helpers under /usr/local/lib/libreportal/ do NOT source
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# this file. They get the paths baked in at install (sed placeholders), so the
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# manager cannot redirect a root `chown`/`chmod` by editing config. This file is
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# only for the manager-run code (app, CLI, task processor), which runs without
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# extra privilege.
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#
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# Mirror copy: init.sh derives the same vars inline (it is self-contained for the
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# bare /root/init.sh reinstall case, where scripts/ isn't alongside). Keep the two
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# derivations in sync.
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# --- Resolve the three roots ------------------------------------------------
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# Transitional compat: an EXISTING install (the legacy single /docker tree,
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# identified by its config marker) keeps using /docker until a deliberate
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# reinstall to the split layout — so deploying new code never strands a running
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# box. Fresh installs (no marker) get the /libreportal-* split.
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if [[ -z "${LP_SYSTEM_DIR:-}" ]]; then
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if [[ ! -e /libreportal-system && -f /docker/configs/general/general_docker_install ]]; then
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LP_SYSTEM_DIR=/docker
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: "${LP_CONTAINERS_DIR:=/docker/containers}"
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: "${LP_BACKUPS_DIR:=/docker/backups}"
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else
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LP_SYSTEM_DIR=/libreportal-system
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fi
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fi
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: "${LP_CONTAINERS_DIR:=/libreportal-containers}"
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: "${LP_BACKUPS_DIR:=/libreportal-backups}"
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# --- Derived: system tree (manager-owned). docker_dir is the legacy name. ---
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docker_dir="$LP_SYSTEM_DIR"
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system_dir="$LP_SYSTEM_DIR"
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configs_dir="$LP_SYSTEM_DIR/configs/"
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logs_dir="$LP_SYSTEM_DIR/logs/"
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ssl_dir="$LP_SYSTEM_DIR/ssl/"
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ssh_dir="$LP_SYSTEM_DIR/ssh/"
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wireguard_dir="$LP_SYSTEM_DIR/wireguard/"
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migrate_dir="$LP_SYSTEM_DIR/migrate"
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restore_dir="$LP_SYSTEM_DIR/restore"
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script_dir="$LP_SYSTEM_DIR/install"
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install_configs_dir="$script_dir/configs/"
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install_containers_dir="$script_dir/containers/"
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install_scripts_dir="$script_dir/scripts/"
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# --- Derived: data tree (container-user-owned) — the root IS the dir ---------
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containers_dir="$LP_CONTAINERS_DIR/"
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# --- Derived: backups tree (container-user-owned; own mount-able) -----------
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backup_dir="$LP_BACKUPS_DIR"
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# --- Control-plane manager user (configurable; baked into helpers at install) -
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# The systemd unit + CLI wrapper export LP_MANAGER_USER; else default libreportal.
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sudo_user_name="${LP_MANAGER_USER:-libreportal}"
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# =============================================================================
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# Storage locations — the containers root is a LIST, not a single path.
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# =============================================================================
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# See docs/roadmap/storage-locations.md. Three ideas, in dependency order:
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#
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# 1. The set of roots that may hold app data comes from a ROOT-OWNED registry
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# ($lp_storage_registry). The manager can read it and never write it — the
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# same trust boundary that makes the baked __CONTAINERS_DIR__ safe in the
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# /usr/local/lib/libreportal/ helpers. Adding a root goes through
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# `libreportal-storage add`, which validates and is the only writer.
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#
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# 2. An app's directory is DISCOVERED, not declared: whichever root actually
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# holds <slug>/<slug>.config wins. CFG_<SLUG>_STORAGE records intent and is
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# consulted only when the app isn't on disk yet. Disagreement resolves to
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# the disk, which is what makes a hand-move or a half-finished migration
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# self-heal instead of corrupting.
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#
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# 3. A root is AVAILABLE only while its marker file is present. The marker
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# lives on the drive, so an unmounted disk has no marker and the root is
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# unavailable — appDir fails rather than handing back a path that docker
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# would happily populate on the bare mountpoint.
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#
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# Everything here must stay cheap: pathIsContainerData is on the hot path of
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# every file helper, so the roots list and the slug->dir map are both memoised
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# in globals and loaded without a subshell.
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# Root-owned registry: "<id>\t<path>\t<dev>\t<fs_uuid>" per line. Absent on an
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# install that predates storage locations — then the primary root is the only
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# root and every function here behaves exactly as the old single-root code did.
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lp_storage_registry="${LP_STORAGE_REGISTRY:-/usr/local/lib/libreportal/storage.roots}"
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# Written root-owned into a location's top level at registration. Presence is
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# the mount test (see idea 3 above).
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lp_storage_marker=".libreportal-storage"
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# Returned by appDir when a location exists but its drive is not mounted. A path
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# that cannot exist, so a caller that ignores the non-zero status still fails
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# loudly on something harmless instead of writing to a bare mountpoint.
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lp_storage_unavailable="/nonexistent-libreportal-unavailable"
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# Memo state. Declared here so the associative array exists before first use and
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# so a re-source of paths.sh starts from a clean map rather than a stale one.
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declare -A LP_APP_DIR_CACHE=()
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LP_APP_DIR_SCANNED=0
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declare -a LP_STORAGE_ROOTS=()
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LP_STORAGE_ROOTS_LOADED=0
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# The install-time containers root. Always present, never removable, and the
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# home of anything that must not move (the WebUI's own tree).
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primaryRoot()
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{
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printf '%s' "${LP_CONTAINERS_DIR%/}"
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}
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# LibrePortal's own container dir. Structurally pinned to the primary root —
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# too much of the control plane reaches into it by literal path for it to move.
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webuiDir()
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{
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printf '%s' "${LP_CONTAINERS_DIR%/}/libreportal"
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}
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# Populate LP_STORAGE_ROOTS (primary first). Sets the global directly — callers
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# must NOT wrap this in a subshell or the memo is lost.
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_lpStorageRootsLoad()
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{
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[[ "${LP_STORAGE_ROOTS_LOADED:-0}" == "1" ]] && return 0
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LP_STORAGE_ROOTS=("${LP_CONTAINERS_DIR%/}")
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local _id _path _rest
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if [[ -r "$lp_storage_registry" ]]; then
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while IFS=$'\t' read -r _id _path _rest || [[ -n "$_id" ]]; do
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[[ -z "$_path" || "$_id" == \#* ]] && continue
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_path="${_path%/}"
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[[ "$_path" == "${LP_CONTAINERS_DIR%/}" ]] && continue
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LP_STORAGE_ROOTS+=("$_path")
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done < "$lp_storage_registry"
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fi
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LP_STORAGE_ROOTS_LOADED=1
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return 0
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}
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# Drop every memo. Call after registering/removing a location or moving an app —
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# otherwise a long-lived process (the task processor) keeps serving stale paths.
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storageCacheReset()
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{
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LP_STORAGE_ROOTS=()
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LP_STORAGE_ROOTS_LOADED=0
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LP_APP_DIR_CACHE=()
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LP_APP_DIR_SCANNED=0
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return 0
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}
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# Every registered container-data root, primary first, one per line, no trailing
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# slash. Includes roots whose drive is currently absent — callers that care ask
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# storageRootAvailable.
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storageRoots()
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{
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_lpStorageRootsLoad
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local r
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for r in "${LP_STORAGE_ROOTS[@]}"; do
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printf '%s\n' "$r"
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done
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}
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# Is this root usable right now? The primary root is definitionally available
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# (if it is gone, so is the install). A registered root needs its marker, which
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# is only readable when the drive is actually mounted.
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storageRootAvailable()
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{
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local root="${1%/}"
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[[ -z "$root" ]] && return 1
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[[ "$root" == "${LP_CONTAINERS_DIR%/}" ]] && return 0
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[[ -e "$root/$lp_storage_marker" ]]
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}
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# Is $1 inside ANY container-data root? Replaces the
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# `[[ "$p" == "$containers_dir"* ]]` idiom that decides whether a file op runs
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# as the container user or the manager. A miss here is a wrong-owner file that
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# fails much later, so it deliberately matches the root itself as well as
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# anything beneath it, with or without a trailing slash.
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pathIsContainerData()
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{
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local p="$1"
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[[ -z "$p" ]] && return 1
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_lpStorageRootsLoad
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local root
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for root in "${LP_STORAGE_ROOTS[@]}"; do
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[[ -z "$root" ]] && continue
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[[ "$p" == "$root" || "$p" == "$root/"* ]] && return 0
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done
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return 1
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}
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# Resolve a location NAME to its root path. Names live in the manager-owned
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# per-location config (CFG_STORAGE_LOC_<id>_NAME); paths live in the root-owned
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# registry. "default" (and an unset value) is the primary root.
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storageLocationPath()
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{
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local want="$1"
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[[ -z "$want" || "$want" == "default" ]] && { primaryRoot; return 0; }
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local _id _path _rest name_var
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if [[ -r "$lp_storage_registry" ]]; then
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while IFS=$'\t' read -r _id _path _rest || [[ -n "$_id" ]]; do
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[[ -z "$_path" || "$_id" == \#* ]] && continue
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# Match on the id itself, or on the friendly name from its config.
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name_var="CFG_STORAGE_LOC_${_id}_NAME"
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if [[ "$_id" == "$want" || "${!name_var:-}" == "$want" ]]; then
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printf '%s' "${_path%/}"
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return 0
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fi
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done < "$lp_storage_registry"
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fi
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return 1
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}
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# Reverse: root path -> location name (falls back to the id, then "default").
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storageLocationName()
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{
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local want="${1%/}"
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[[ -z "$want" || "$want" == "${LP_CONTAINERS_DIR%/}" ]] && { printf 'default'; return 0; }
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local _id _path _rest name_var
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if [[ -r "$lp_storage_registry" ]]; then
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while IFS=$'\t' read -r _id _path _rest || [[ -n "$_id" ]]; do
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[[ -z "$_path" || "$_id" == \#* ]] && continue
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if [[ "${_path%/}" == "$want" ]]; then
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name_var="CFG_STORAGE_LOC_${_id}_NAME"
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printf '%s' "${!name_var:-$_id}"
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return 0
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fi
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done < "$lp_storage_registry"
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fi
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return 1
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}
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# --- app -> location index ---------------------------------------------------
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# A manager-owned CACHE of which root each app was last seen on. Discovery still
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# wins whenever the disk is present; this exists for the one case discovery
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# cannot answer:
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#
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# an app on a drive that is not mounted is invisible to the scan, and without
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# the index appDir would fall back to the primary root — handing back a path
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# docker would populate on the wrong disk, booting the app empty. That is the
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# exact failure the whole availability design exists to prevent, so "not found
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# by the scan" must not silently mean "belongs on the primary root".
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#
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# Location: the manager-owned SYSTEM tree, deliberately NOT under configs/.
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#
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# The requirements are only "manager-owned" and "not on a removable disk" (it has
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# to be readable precisely when that disk is gone). configs/ satisfies both and
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# was the first instinct — and it was wrong, because that tree carries a third
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# property this file violates: sourceScanFiles SOURCES what it finds there, and
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# sourcing means executing.
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#
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# This file is a TSV of "<slug><TAB><root>". Bash reads such a line as a command
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# and its argument. Harmless while no slug matched a real executable — and a fork
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# bomb the moment the row was for the app named `libreportal`, because that IS
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# the CLI on PATH: sourcing ran `libreportal /libreportal-containers`, which
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# re-entered the scan, which sourced the file again, one process pair per level
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# until the host died of OOM. It took out the desktop session with it.
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#
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# scan_files.sh now also requires a .category marker before sourcing anything in
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# a configs/ subdirectory, so the hole is closed from both ends. But a
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# machine-written data file has no business in the one tree whose contract is
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# "everything here is executed", so it lives here instead.
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storageIndexFile()
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{
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printf '%s' "${system_dir%/}/storage/app_locations"
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}
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# One-shot migration off the old configs/ path. Cheap (a -f test) and it runs
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# before any read, so an install that predates the move keeps its index instead
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# of silently forgetting where every app lives.
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_storageIndexMigrate()
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{
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local legacy="${configs_dir%/}/storage/app_locations"
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local current; current=$(storageIndexFile)
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[[ -f "$legacy" ]] || return 0
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local op=""
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declare -F runInstallOp >/dev/null 2>&1 && op="runInstallOp"
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if [[ ! -f "$current" ]]; then
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$op mkdir -p "${current%/*}" 2>/dev/null
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$op cp "$legacy" "$current" 2>/dev/null
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fi
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$op rm -f "$legacy" 2>/dev/null
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$op rmdir "${legacy%/*}" 2>/dev/null
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return 0
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}
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storageIndexGet()
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{
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local slug="$1" f s r
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_storageIndexMigrate
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f=$(storageIndexFile)
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[[ -r "$f" ]] || return 1
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while IFS=$'\t' read -r s r || [[ -n "$s" ]]; do
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[[ "$s" == "$slug" ]] || continue
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[[ -z "$r" ]] && return 1
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printf '%s' "${r%/}"
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return 0
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done < "$f"
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return 1
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}
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# Record (or clear, with an empty root) an app's location. Idempotent.
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storageIndexSet()
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{
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local slug="$1" root="${2%/}" f tmp s r
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[[ -z "$slug" ]] && return 1
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_storageIndexMigrate
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f=$(storageIndexFile)
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local cur=""
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cur=$(storageIndexGet "$slug" 2>/dev/null) || cur=""
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[[ "$cur" == "$root" ]] && return 0
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local op=""
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declare -F runInstallOp >/dev/null 2>&1 && op="runInstallOp"
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$op mkdir -p "${f%/*}" 2>/dev/null
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tmp=$(mktemp 2>/dev/null) || return 1
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if [[ -r "$f" ]]; then
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while IFS=$'\t' read -r s r || [[ -n "$s" ]]; do
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[[ -z "$s" || "$s" == "$slug" ]] && continue
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printf '%s\t%s\n' "$s" "$r" >> "$tmp"
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done < "$f"
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fi
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[[ -n "$root" ]] && printf '%s\t%s\n' "$slug" "$root" >> "$tmp"
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if declare -F runInstallWrite >/dev/null 2>&1; then
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runInstallWrite "$f" < "$tmp"
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else
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cat "$tmp" > "$f" 2>/dev/null
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fi
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rm -f "$tmp"
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return 0
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}
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storageIndexRemove()
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{
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storageIndexSet "$1" ""
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}
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# Where the app's config SAYS it should live. Only consulted when the app isn't
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# on disk yet — the disk always wins for a deployed app.
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_appDirIntended()
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{
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local slug="$1"
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local key="CFG_${slug^^}_STORAGE"
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local want="${!key:-}"
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local path
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if [[ -n "$want" ]] && path=$(storageLocationPath "$want"); then
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printf '%s' "$path"
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return 0
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fi
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primaryRoot
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}
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# Build the slug -> directory map by scanning every AVAILABLE root for
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# <slug>/<slug>.config. Primary root first, so it wins a duplicate — a stray
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# copy on a second disk can never hijack an app that is live on the primary.
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#
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# runFileOp because under rootless the container tree is owned by the docker
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# install user and is not list-readable by the manager; without it this silently
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# finds nothing and every app resolves to the fallback.
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_appDirScan()
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{
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[[ "${LP_APP_DIR_SCANNED:-0}" == "1" ]] && return 0
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LP_APP_DIR_SCANNED=1
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_lpStorageRootsLoad
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local scan_op=""
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declare -F runFileOp >/dev/null 2>&1 && scan_op="runFileOp"
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local root cfg slug dir
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for root in "${LP_STORAGE_ROOTS[@]}"; do
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[[ -z "$root" ]] && continue
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storageRootAvailable "$root" || continue
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while IFS= read -r cfg; do
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[[ -z "$cfg" ]] && continue
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dir="${cfg%/*}"
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slug="${dir##*/}"
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# Only <dir>/<dir>.config counts — an app dir holds other *.config
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# payload files and those must not register as apps.
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[[ "${cfg##*/}" == "$slug.config" ]] || continue
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[[ -n "${LP_APP_DIR_CACHE[$slug]:-}" ]] && continue
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LP_APP_DIR_CACHE["$slug"]="$root/$slug"
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# Self-heal: what we can see is authoritative, so correct the index
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# for a hand-move or a half-finished migration.
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storageIndexSet "$slug" "$root" 2>/dev/null
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done < <($scan_op find "$root" -mindepth 2 -maxdepth 2 -type f -name '*.config' 2>/dev/null)
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done
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return 0
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}
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# Every app DIRECTORY across every AVAILABLE root, one absolute path per line.
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# THE enumerator — replaces `find "$containers_dir" -mindepth 1 -maxdepth 1
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# -type d`, which only ever saw the primary root.
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#
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# Roots whose drive is absent are SKIPPED, not reported as empty. That
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# distinction is load-bearing: callers that reap "folders that no longer exist"
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# would otherwise delete database rows and port allocations for apps whose only
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# crime is living on an unplugged disk. Such callers must gate on
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# appStorageAvailable rather than on the absence of a directory here.
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#
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# Deduplicated by slug, primary root first, matching appDir's precedence — a
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# stray copy on a second disk never doubles an app that is live on the primary.
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storageAppDirs()
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{
|
|
_lpStorageRootsLoad
|
|
local scan_op="" root d slug
|
|
declare -F runFileOp >/dev/null 2>&1 && scan_op="runFileOp"
|
|
local -A seen=()
|
|
for root in "${LP_STORAGE_ROOTS[@]}"; do
|
|
[[ -z "$root" ]] && continue
|
|
storageRootAvailable "$root" || continue
|
|
while IFS= read -r d; do
|
|
[[ -z "$d" ]] && continue
|
|
slug="${d##*/}"
|
|
[[ -n "${seen[$slug]:-}" ]] && continue
|
|
seen["$slug"]=1
|
|
printf '%s\n' "$d"
|
|
done < <($scan_op find "$root" -mindepth 1 -maxdepth 1 -type d 2>/dev/null)
|
|
done
|
|
}
|
|
|
|
# Every app's OWN config file (<root>/<slug>/<slug>.config), across available
|
|
# roots, deduplicated by slug. Deliberately stricter than a bare
|
|
# `find -name '*.config'`: an app dir may ship other *.config payload files
|
|
# (they get sourced as bash — see scan_files.sh), and those are not apps.
|
|
storageAppConfigs()
|
|
{
|
|
local d slug
|
|
while IFS= read -r d; do
|
|
[[ -z "$d" ]] && continue
|
|
slug="${d##*/}"
|
|
[[ -f "$d/$slug.config" ]] && printf '%s\n' "$d/$slug.config"
|
|
done < <(storageAppDirs)
|
|
}
|
|
|
|
# Slug form of storageAppDirs.
|
|
storageApps()
|
|
{
|
|
local d
|
|
while IFS= read -r d; do
|
|
[[ -n "$d" ]] && printf '%s\n' "${d##*/}"
|
|
done < <(storageAppDirs)
|
|
}
|
|
|
|
# THE resolver. Prints the app's directory (no trailing slash).
|
|
#
|
|
# Returns non-zero — and prints an unusable sentinel path — when the app's
|
|
# location exists but its drive is not mounted. This is the single central
|
|
# availability gate: every caller reaches it by construction, so a missing disk
|
|
# fails here instead of needing a guard at ~200 call sites.
|
|
appDir()
|
|
{
|
|
local slug="$1"
|
|
if [[ -z "$slug" ]]; then
|
|
printf '%s' "$lp_storage_unavailable"
|
|
return 1
|
|
fi
|
|
|
|
_appDirScan
|
|
local dir="${LP_APP_DIR_CACHE[$slug]:-}"
|
|
|
|
# Not on any AVAILABLE root. Before assuming it is new, ask the index —
|
|
# an installed app whose drive is unplugged looks identical to a new one,
|
|
# and guessing "primary root" there is the corrupting answer.
|
|
if [[ -z "$dir" ]]; then
|
|
local known=""
|
|
if known=$(storageIndexGet "$slug" 2>/dev/null) && [[ -n "$known" ]]; then
|
|
dir="$known/$slug"
|
|
else
|
|
dir="$(_appDirIntended "$slug")/$slug"
|
|
fi
|
|
fi
|
|
|
|
if ! storageRootAvailable "${dir%/*}"; then
|
|
printf '%s' "$lp_storage_unavailable/$slug"
|
|
return 1
|
|
fi
|
|
|
|
printf '%s' "$dir"
|
|
return 0
|
|
}
|
|
|
|
# Trailing-slash form, for the many call sites that built "$containers_dir$app/"
|
|
appDirSlash()
|
|
{
|
|
local d
|
|
d=$(appDir "$1") || { printf '%s/' "$d"; return 1; }
|
|
printf '%s/' "$d"
|
|
}
|
|
|
|
# True when the app's storage is present and usable. Cheap gate for callers that
|
|
# want to skip rather than fail (boot reconcile, status generators).
|
|
appStorageAvailable()
|
|
{
|
|
appDir "$1" >/dev/null 2>&1
|
|
}
|