108 lines
3.9 KiB
Bash
Executable File
108 lines
3.9 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Restores a backup made by backup-server.sh into MINECRAFT_SERVER_PATH.
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# Each top-level item in the archive (plugins, config, worlds, settings) is
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# replaced; a "pre-restore" backup of the current state is taken first.
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#
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# Usage: restore-server.sh [-y|--yes] [--no-backup] [backup-file|name]
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# Defaults to the newest backup in MINECRAFT_BACKUP_PATH.
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set -euo pipefail
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TOOLS_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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PROJECT_ROOT="$(cd "$TOOLS_DIR/.." && pwd)"
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if [[ ! -r "$PROJECT_ROOT/.env" ]]; then
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echo "Error: $PROJECT_ROOT/.env is missing or unreadable. Copy .env.example to .env and set its values." >&2
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exit 1
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fi
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load_project_env() {
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local env_line env_key env_value first_char last_char
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while IFS= read -r env_line || [[ -n "$env_line" ]]; do
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env_line="${env_line%$'\r'}"
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[[ "$env_line" =~ ^[[:space:]]*(#|$) ]] && continue
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[[ "$env_line" == *=* ]] || continue
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env_key="${env_line%%=*}"
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env_value="${env_line#*=}"
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env_key="${env_key#"${env_key%%[![:space:]]*}"}"
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env_key="${env_key%"${env_key##*[![:space:]]}"}"
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[[ "$env_key" =~ ^[A-Za-z_][A-Za-z0-9_]*$ ]] || continue
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env_value="${env_value#"${env_value%%[![:space:]]*}"}"
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env_value="${env_value%"${env_value##*[![:space:]]}"}"
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if (( ${#env_value} >= 2 )); then
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first_char="${env_value:0:1}"
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last_char="${env_value:$((${#env_value} - 1)):1}"
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if [[ "$first_char" == "$last_char" && ( "$first_char" == '"' || "$first_char" == "'" ) ]]; then
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env_value="${env_value:1:$((${#env_value} - 2))}"
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fi
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fi
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if [[ -z "${!env_key:-}" ]]; then
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export "$env_key=$env_value"
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fi
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done < "$PROJECT_ROOT/.env"
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}
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load_project_env
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MINECRAFT_SERVER_PATH="${MINECRAFT_SERVER_PATH:-MCServer}"
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MINECRAFT_SERVER_PATH="${MINECRAFT_SERVER_PATH/#\~/$HOME}"
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[[ "$MINECRAFT_SERVER_PATH" == /* ]] || MINECRAFT_SERVER_PATH="$PROJECT_ROOT/$MINECRAFT_SERVER_PATH"
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MINECRAFT_BACKUP_PATH="${MINECRAFT_BACKUP_PATH:-backups}"
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MINECRAFT_BACKUP_PATH="${MINECRAFT_BACKUP_PATH/#\~/$HOME}"
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[[ "$MINECRAFT_BACKUP_PATH" == /* ]] || MINECRAFT_BACKUP_PATH="$PROJECT_ROOT/$MINECRAFT_BACKUP_PATH"
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ASSUME_YES=false
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SAFETY_BACKUP=true
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ARCHIVE=""
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for arg in "$@"; do
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case "$arg" in
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-y|--yes) ASSUME_YES=true ;;
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--no-backup) SAFETY_BACKUP=false ;;
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-h|--help) sed -n '2,8p' "$0"; exit 0 ;;
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-*) echo "Unknown option: $arg" >&2; exit 1 ;;
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*) ARCHIVE="$arg" ;;
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esac
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done
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if [[ -z "$ARCHIVE" ]]; then
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ARCHIVE=$(ls -t "$MINECRAFT_BACKUP_PATH"/backup-*.tar.bz2 2>/dev/null | head -n1 || true)
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[[ -n "$ARCHIVE" ]] || { echo "Error: no backups found in $MINECRAFT_BACKUP_PATH." >&2; exit 1; }
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elif [[ ! -f "$ARCHIVE" && -f "$MINECRAFT_BACKUP_PATH/$ARCHIVE" ]]; then
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ARCHIVE="$MINECRAFT_BACKUP_PATH/$ARCHIVE"
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fi
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[[ -f "$ARCHIVE" ]] || { echo "Error: backup not found: $ARCHIVE" >&2; exit 1; }
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ARCHIVE="$(cd "$(dirname "$ARCHIVE")" && pwd)/$(basename "$ARCHIVE")"
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if pgrep -f "java.*paper-.*\.jar" >/dev/null; then
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echo "Error: the server is running. Stop it first (tools/stop-server.sh)." >&2
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exit 1
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fi
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ENTRIES=$(tar -tjf "$ARCHIVE")
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if grep -qE '^/|(^|/)\.\.(/|$)' <<<"$ENTRIES"; then
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echo "Error: archive contains absolute or '..' paths; refusing to restore." >&2
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exit 1
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fi
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TOP_LEVEL=$(sed -E 's#^\./##; s#/.*##' <<<"$ENTRIES" | { grep -vE '^\.?$' || true; } | sort -u)
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[[ -n "$TOP_LEVEL" ]] || { echo "Error: backup is empty." >&2; exit 1; }
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echo "Restore $(basename "$ARCHIVE") into $MINECRAFT_SERVER_PATH"
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echo "These items will be replaced:"
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sed 's/^/ /' <<<"$TOP_LEVEL"
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if ! $ASSUME_YES; then
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read -r -p "Continue? [y/N] " reply
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[[ "$reply" =~ ^[Yy]$ ]] || { echo "Aborted."; exit 1; }
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fi
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mkdir -p "$MINECRAFT_SERVER_PATH"
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if $SAFETY_BACKUP && [[ -n "$(ls -A "$MINECRAFT_SERVER_PATH")" ]]; then
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"$TOOLS_DIR/backup-server.sh" pre-restore
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fi
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while IFS= read -r item; do
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rm -rf "${MINECRAFT_SERVER_PATH:?}/$item"
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done <<<"$TOP_LEVEL"
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tar -xjf "$ARCHIVE" -C "$MINECRAFT_SERVER_PATH"
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echo "Restored $(basename "$ARCHIVE")."
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