278 lines
8.1 KiB
Shell
Executable file
278 lines
8.1 KiB
Shell
Executable file
#!/usr/bin/env bash
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# lab-test-ca.sh — OpenSSL lab CA for local/dev experiments ONLY.
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#
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# Creates a self-signed lab root CA and signs a PKCS#10 CSR → leaf PEM.
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# Material stays on disk under a lab directory (default lab-pki/, gitignored).
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#
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# Optional HTTP path (LAB ONLY): when staff-iam is started with LAB_CA_ENABLE=1
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# AND this directory has been initialized, POST /enroll/csr may shell-out to
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# `sign` and return 201 + cert PEM with header X-Lab-CA: 1.
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# Default (LAB_CA_ENABLE unset/off) → POST /enroll/csr stays 501.
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# NODE_ENV=production always refuses the lab HTTP path.
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#
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# NOT FOR PRODUCTION. Do not trust this root on real workstations,
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# staging staff fleets, or prod reverse proxies.
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#
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# Usage:
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# scripts/lab-test-ca.sh init [--dir DIR]
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# scripts/lab-test-ca.sh sign --csr PATH [--dir DIR] [--out PATH] [--days N] [--cn CN]
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# scripts/lab-test-ca.sh warn
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#
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# Defaults: DIR=./lab-pki (gitignored). Requires openssl on PATH.
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set -euo pipefail
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SCRIPT_NAME="$(basename "$0")"
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ROOT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
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DEFAULT_DIR="${ROOT_DIR}/lab-pki"
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DAYS_DEFAULT=7
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warn_banner() {
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cat >&2 <<'EOF'
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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LAB ONLY — verae-staff-iam scripts/lab-test-ca.sh
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Self-signed throwaway CA. NOT for production, staging staff, or
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any reverse-proxy trust store that faces real operators.
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Opt-in HTTP: LAB_CA_ENABLE=1 + init'd lab-pki → POST /enroll/csr may
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shell-out here (201 + X-Lab-CA:1). Default off → 501 scaffold.
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NODE_ENV=production refuses lab HTTP. NOT a production CA.
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Do NOT ship lab-pki/ keys in images or commit private keys.
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Live production mint stays on the product backlog (docs/PKI-MINT-BACKLOG.md).
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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EOF
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}
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usage() {
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cat <<EOF
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Usage:
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$SCRIPT_NAME init [--dir DIR]
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Create lab root CA key + self-signed cert under DIR (default: lab-pki/).
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$SCRIPT_NAME sign --csr PATH [--dir DIR] [--out PATH] [--days N] [--cn CN]
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Sign a PEM CSR with the lab CA → leaf certificate PEM.
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--out defaults to DIR/leaf-<timestamp>.crt.pem
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--days leaf notAfter (default ${DAYS_DEFAULT}, max 30 for lab)
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--cn optional subject CN override in the issued cert (lab only)
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$SCRIPT_NAME warn
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Print the lab-only warning and exit 0.
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Environment:
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LAB_PKI_DIR Override default DIR when --dir omitted.
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Exit codes: 0 ok · 1 usage/input · 2 missing openssl/CA · 3 sign failure
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EOF
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}
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need_openssl() {
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if ! command -v openssl >/dev/null 2>&1; then
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echo "error: openssl not found on PATH" >&2
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exit 2
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fi
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}
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resolve_dir() {
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local d="${1:-}"
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if [[ -z "$d" ]]; then
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d="${LAB_PKI_DIR:-$DEFAULT_DIR}"
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fi
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# Absolute path
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if [[ "$d" != /* ]]; then
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d="$(pwd)/$d"
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fi
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echo "$d"
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}
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cmd_init() {
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local dir=""
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while [[ $# -gt 0 ]]; do
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case "$1" in
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--dir) dir="${2:-}"; shift 2 ;;
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-h|--help) usage; exit 0 ;;
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*) echo "error: unknown init arg: $1" >&2; usage >&2; exit 1 ;;
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esac
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done
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need_openssl
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warn_banner
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dir="$(resolve_dir "$dir")"
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mkdir -p "$dir"
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chmod 700 "$dir" 2>/dev/null || true
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local key="$dir/lab-root.key.pem"
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local crt="$dir/lab-root.crt.pem"
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local conf="$dir/lab-root.cnf"
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local serial="$dir/lab-root.srl"
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if [[ -f "$key" || -f "$crt" ]]; then
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echo "error: lab CA already exists under $dir (refusing to overwrite)" >&2
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echo " remove lab-root.key.pem / lab-root.crt.pem to re-init" >&2
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exit 1
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fi
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cat >"$conf" <<'EOF'
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[req]
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distinguished_name = dn
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x509_extensions = v3_ca
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prompt = no
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[dn]
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CN = Verae staff-iam LAB root (NOT FOR PRODUCTION)
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O = Verae Lab Only
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OU = throwaway-test-ca
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[v3_ca]
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basicConstraints = critical,CA:true,pathlen:0
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keyUsage = critical,keyCertSign,cRLSign
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subjectKeyIdentifier = hash
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EOF
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openssl genrsa -out "$key" 4096 2>/dev/null
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chmod 600 "$key"
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openssl req -new -x509 -days 3650 -key "$key" -out "$crt" -config "$conf"
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# Fresh serial file for leaf issuance
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openssl rand -hex 8 | tr '[:lower:]' '[:upper:]' >"$serial"
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chmod 600 "$serial" 2>/dev/null || true
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cat >"$dir/README.txt" <<EOF
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LAB PKI material — NOT FOR PRODUCTION
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Generated by scripts/lab-test-ca.sh on $(date -u +%Y-%m-%dT%H:%M:%SZ)
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Root cert: lab-root.crt.pem (public)
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Root key: lab-root.key.pem (PRIVATE — never commit, never production trust)
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With LAB_CA_ENABLE=1 the staff-iam server may shell-out sign against this dir.
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Default (flag off) POST /enroll/csr stays 501. NEVER production.
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See docs/TEST-CA-DESIGN.md, ENROLL.md, docs/PKI-MINT-BACKLOG.md.
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EOF
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echo "lab CA created:"
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echo " dir: $dir"
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echo " cert: $crt"
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echo " key: $key (keep private)"
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openssl x509 -in "$crt" -noout -subject -dates 2>/dev/null || true
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warn_banner
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}
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cmd_sign() {
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local dir="" csr="" out="" days="$DAYS_DEFAULT" cn=""
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while [[ $# -gt 0 ]]; do
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case "$1" in
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--dir) dir="${2:-}"; shift 2 ;;
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--csr) csr="${2:-}"; shift 2 ;;
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--out) out="${2:-}"; shift 2 ;;
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--days) days="${2:-}"; shift 2 ;;
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--cn) cn="${2:-}"; shift 2 ;;
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-h|--help) usage; exit 0 ;;
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*) echo "error: unknown sign arg: $1" >&2; usage >&2; exit 1 ;;
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esac
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done
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if [[ -z "$csr" ]]; then
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echo "error: --csr PATH is required" >&2
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usage >&2
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exit 1
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fi
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if [[ ! -f "$csr" ]]; then
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echo "error: CSR not found: $csr" >&2
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exit 1
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fi
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if ! [[ "$days" =~ ^[0-9]+$ ]] || [[ "$days" -lt 1 || "$days" -gt 30 ]]; then
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echo "error: --days must be 1..30 (lab short-lived leaves)" >&2
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exit 1
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fi
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need_openssl
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warn_banner
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dir="$(resolve_dir "$dir")"
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local key="$dir/lab-root.key.pem"
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local ca="$dir/lab-root.crt.pem"
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local serial="$dir/lab-root.srl"
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local ext="$dir/lab-leaf-ext.cnf"
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if [[ ! -f "$key" || ! -f "$ca" ]]; then
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echo "error: lab CA missing under $dir — run: $SCRIPT_NAME init --dir $dir" >&2
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exit 2
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fi
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if [[ ! -f "$serial" ]]; then
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openssl rand -hex 8 | tr '[:lower:]' '[:upper:]' >"$serial"
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fi
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# Light shape check (headers only); openssl does the real parse on sign.
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if ! grep -q "BEGIN CERTIFICATE REQUEST" "$csr" || ! grep -q "END CERTIFICATE REQUEST" "$csr"; then
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echo "error: CSR must be PEM PKCS#10 (BEGIN/END CERTIFICATE REQUEST)" >&2
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exit 1
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fi
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if [[ -z "$out" ]]; then
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out="$dir/leaf-$(date -u +%Y%m%dT%H%M%SZ).crt.pem"
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fi
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cat >"$ext" <<EOF
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basicConstraints = critical,CA:false
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keyUsage = critical,digitalSignature,keyEncipherment
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extendedKeyUsage = clientAuth
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subjectKeyIdentifier = hash
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authorityKeyIdentifier = keyid,issuer
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EOF
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# Optional CN override via -subj would replace whole subject; keep CSR subject
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# unless --cn set, then use openssl -subj for lab convenience only.
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local subj_args=()
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if [[ -n "$cn" ]]; then
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subj_args=(-subj "/CN=${cn}/O=Verae Lab Only/OU=lab-leaf")
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fi
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if ! openssl x509 -req \
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-in "$csr" \
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-CA "$ca" \
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-CAkey "$key" \
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-CAserial "$serial" \
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-out "$out" \
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-days "$days" \
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-sha256 \
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-extfile "$ext" \
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"${subj_args[@]+"${subj_args[@]}"}" 2>"$dir/last-sign.err"
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then
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echo "error: openssl sign failed:" >&2
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cat "$dir/last-sign.err" >&2 || true
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exit 3
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fi
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rm -f "$dir/last-sign.err"
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# Chain file (leaf + lab root) for convenience — still lab only.
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local chain="${out%.crt.pem}.chain.pem"
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if [[ "$chain" == "$out" ]]; then
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chain="${out}.chain.pem"
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fi
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cat "$out" "$ca" >"$chain"
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echo "lab leaf signed (NOT FOR PRODUCTION):"
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echo " leaf: $out"
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echo " chain: $chain"
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openssl x509 -in "$out" -noout -subject -issuer -dates -serial 2>/dev/null || true
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echo
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echo "Next (lab/dev only): point a *dev* reverse proxy trust store at:"
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echo " $ca"
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echo "Default POST /enroll/csr is still 501 unless LAB_CA_ENABLE=1."
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echo "See docs/TEST-CA-DESIGN.md — LAB ONLY, never production."
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warn_banner
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}
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main() {
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local cmd="${1:-}"
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if [[ -z "$cmd" ]]; then
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warn_banner
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usage >&2
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exit 1
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fi
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shift || true
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case "$cmd" in
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init) cmd_init "$@" ;;
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sign) cmd_sign "$@" ;;
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warn) warn_banner; exit 0 ;;
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-h|--help|help) usage; exit 0 ;;
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*)
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echo "error: unknown command: $cmd" >&2
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usage >&2
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exit 1
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;;
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esac
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}
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main "$@"
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