LibrePortal/scripts/webui/data/utils/webui_atomic_write.sh
librelad e4872ab511 refactor(paths): single source of truth for a relocatable, split layout (phase 1)
Introduce scripts/source/paths.sh as the canonical path resolver for three
independently-relocatable roots:
  LP_SYSTEM_DIR      manager-owned control plane (configs/logs/install/db/ssl/ssh/migrate)
  LP_CONTAINERS_DIR  container-user-owned live app data
  LP_BACKUPS_DIR     container-user-owned backup repos (own mount-able)

Roots come from the environment when set (install bakes them; CLI/app inherit
from init.sh), else default to /libreportal-*. A transitional compat default
keeps EXISTING installs (legacy single /docker tree, by config marker) on /docker
until a deliberate reinstall, so deploying this never strands a running box.

- init.sh derives the same vars inline (self-contained for the bare /root/init.sh
  reinstall case); paths.sh mirrors it for the standalone task/check processors,
  which now self-locate their scripts dir and source it.
- Replace functional /docker literals with the derived vars across runtime,
  install, backup, crontab, crowdsec/restic, headscale, and reinstall paths;
  clean the inert '== /docker/containers/*' guard fallbacks to the variable form.
- backend: CONTAINERS_DIR now from LP_CONTAINERS_DIR (compose env, filled at
  generation via a new CONTAINERS_DIR_TAG), legacy-safe default for un-recreated
  containers.
- backup default path falls back to the backups root; exclude paths.sh from the
  sourced-file arrays (bootstrap file, sourced explicitly).

The CLI-wrapper heredoc + root helpers still reference /docker; those get baked
in phase 3. No layout/ownership change yet (phase 2).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Signed-off-by: librelad <librelad@digitalangels.vip>
2026-05-25 15:09:39 +01:00

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#!/bin/bash
# LibrePortal WebUI Atomic Write Utilities
# Provides atomic file writing functionality for web UI safety
# Atomic file write function for web UI safety
atomicWriteWebUI() {
local content="$1"
local target_file="$2"
local temp_file="${target_file}.tmp.$$"
# Every step runs as the path's owner so the manager-run runtime (Model A)
# can write the dockerinstall-owned WebUI/app files. Temp + rename share the
# target's directory, so the mv stays atomic (same filesystem, same owner).
local op="runInstallOp" wop="runInstallWrite"
if [[ "$target_file" == "$containers_dir"* || "$target_file" == "${LP_CONTAINERS_DIR:-/libreportal-containers}"/* ]]; then
op="runFileOp"; wop="runFileWrite"
fi
# Ensure directory exists
$op mkdir -p "$(dirname "$target_file")"
# Write to temp file first
printf '%s' "$content" | $wop "$temp_file"
# Set proper permissions
$op chmod 644 "$temp_file"
# Atomic rename (instantaneous - no partial reads)
$op mv "$temp_file" "$target_file"
if [ $? -eq 0 ]; then
echo "✓ Atomic write successful: $target_file"
else
echo "✗ Atomic write failed: $target_file"
fi
}