mirror of
https://github.com/okxlin/appstore.git
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okxlin
80c080b8ca
Rebuilt-from-PR: #6236 Source-PR: https://github.com/okxlin/appstore/pull/6236 Maintainer-workflow: appstore-pr-maintainer
106 lines
3.2 KiB
Bash
Executable File
106 lines
3.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
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export PATH
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ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd -P)"
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ENV_FILE="${ENV_FILE:-$ROOT_DIR/.env}"
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read_env_value() {
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local key="$1"
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[[ -f "$ENV_FILE" ]] || return 0
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local value
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value="$(sed -n "s/^${key}=//p" "$ENV_FILE" | tail -n 1)"
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case "$value" in
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\"*\") value="${value#\"}"; value="${value%\"}" ;;
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\'*\') value="${value#\'}"; value="${value%\'}" ;;
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esac
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printf '%s\n' "$value"
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}
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configured_value() {
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local key="$1"
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local default_value="$2"
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local value
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value="${!key:-}"
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if [[ -z "$value" ]]; then
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value="$(read_env_value "$key")"
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fi
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printf '%s\n' "${value:-$default_value}"
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}
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resolve_app_path() {
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local key="$1"
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local raw="$2"
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local clean candidate resolved current part
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local -a parts=()
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case "$raw" in
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""|/*|.|..|../*|*/../*|*/..) echo "unsafe ${key} path" >&2; return 1 ;;
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esac
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if [[ "$raw" =~ [[:cntrl:]] ]]; then
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echo "unsafe ${key} path" >&2
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return 1
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fi
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clean="${raw#./}"
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[[ -n "$clean" ]] || { echo "unsafe ${key} path" >&2; return 1; }
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command -v realpath >/dev/null 2>&1 || { echo "realpath is required" >&2; return 1; }
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candidate="$ROOT_DIR/$clean"
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resolved="$(realpath -m -- "$candidate")" || { echo "unsafe ${key} path" >&2; return 1; }
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case "$resolved" in
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"$ROOT_DIR"/*) ;;
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*) echo "unsafe ${key} path" >&2; return 1 ;;
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esac
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current="$ROOT_DIR"
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IFS='/' read -r -a parts <<< "$clean"
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for part in "${parts[@]}"; do
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[[ -z "$part" || "$part" == "." ]] && continue
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current="$current/$part"
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if [[ -L "$current" ]]; then
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echo "unsafe ${key} path" >&2
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return 1
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fi
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done
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printf '%s\n' "$resolved"
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}
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resolve_direct_child() {
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local key="$1"
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local raw="$2"
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local clean path
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clean="${raw#./}"
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if [[ -z "$clean" || "$clean" == */* ]]; then
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echo "unsafe ${key} path: lifecycle directories must be direct children of the version root" >&2
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return 1
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fi
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path="$(resolve_app_path "$key" "$raw")"
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[[ "$path" == "$ROOT_DIR/$clean" ]] || { echo "unsafe ${key} path" >&2; return 1; }
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printf '%s\n' "$path"
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}
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verify_trusted_root_chain() {
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local current owner mode
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[[ "$(id -u)" == "0" ]] || { echo "directory ownership initialization must run as root" >&2; return 1; }
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command -v stat >/dev/null 2>&1 || { echo "stat is required" >&2; return 1; }
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current="$ROOT_DIR"
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while [[ "$current" != "/" ]]; do
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[[ -d "$current" && ! -L "$current" ]] || { echo "unsafe version root chain: $current" >&2; return 1; }
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IFS=':' read -r owner mode < <(stat -c '%u:%a' -- "$current")
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[[ "$owner" == "0" ]] || { echo "unsafe version root chain owner: $current" >&2; return 1; }
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[[ "$mode" =~ ^[0-7]{3,4}$ ]] || { echo "unsafe version root chain mode: $current" >&2; return 1; }
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(( (8#$mode & 0022) == 0 )) || { echo "unsafe version root chain permissions: $current" >&2; return 1; }
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current="$(dirname -- "$current")"
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done
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}
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ensure_dir() {
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local key="$1"
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local raw
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local path
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raw="$(configured_value "$key" "$2")"
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path="$(resolve_app_path "$key" "$raw")"
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mkdir -p -- "$path"
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[[ "$(resolve_app_path "$key" "$raw")" == "$path" ]] || { echo "unsafe ${key} path" >&2; return 1; }
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}
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ensure_dir "APP_DATA_DIR" "./data"
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