75 lines
4.1 KiB
Bash
75 lines
4.1 KiB
Bash
#!/usr/bin/env bash
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set -uo pipefail
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# CASAN Plan-16 SEC-17 (ARCH-03) — CASAN_PROFILE=prod is secure-by-default.
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#
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# Many strong controls were opt-in env flags (off unless explicitly set), so a
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# lazy operator ran permissively. Under CASAN_PROFILE=prod they now default ON —
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# while an explicit `=0` still wins (internal scans that disable a flag on purpose
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# must stay disabled). Proven across three real controls:
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# * verify-audit-chain: unsigned chain fails under prod,
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# * control-plane verify-audit: unsigned store fails under prod,
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# * casan-harness kill-switch: engaged switch is enforced under prod, but an
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# explicit CASAN_KILLSWITCH_ENFORCE=0 overrides.
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#
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# Deterministic; hermetic (temp dirs); no model/network.
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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PROJECT_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
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BASH_DIR="$PROJECT_ROOT/.specify/scripts/bash"
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WORK="$(mktemp -d)"
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trap 'rm -rf "$WORK"' EXIT
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PASS=0; FAIL=0
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pass() { echo "PASS: $1"; PASS=$((PASS + 1)); }
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fail() { echo "FAIL: $1"; FAIL=$((FAIL + 1)); }
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rc_of() { set +e; "$@" >/dev/null 2>&1; echo $?; set -e 2>/dev/null || true; }
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echo "===== Plan-16 SEC-17: CASAN_PROFILE=prod secure-by-default ====="
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# --- Control 1: verify-audit-chain (unsigned) ---
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AUD="$WORK/audit"; mkdir -p "$AUD"
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python3 - "$AUD/audit.jsonl" <<'PY'
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import hashlib, json, sys
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core = "|".join(["2026-07-06T00:00:00Z","t1","act","a@x","low","ALLOW","n/a","","ih","oh",""])
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h = hashlib.sha256(core.encode()).hexdigest()
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open(sys.argv[1],"w").write(json.dumps({"timestamp":"2026-07-06T00:00:00Z","trace_id":"t1","action":"act",
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"actor":"a@x","risk_level":"low","decision":"ALLOW","approval_status":"n/a","approver":"",
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"input_hash":"ih","output_hash":"oh","previous_record_hash":"","record_hash":h})+"\n")
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PY
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[[ "$(rc_of bash "$BASH_DIR/verify-audit-chain.sh" "$AUD/audit.jsonl")" -eq 0 ]] \
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&& pass "verify-audit-chain: permissive default allows unsigned" || fail "permissive should allow unsigned"
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[[ "$(rc_of env CASAN_PROFILE=prod bash "$BASH_DIR/verify-audit-chain.sh" "$AUD/audit.jsonl")" -ne 0 ]] \
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&& pass "verify-audit-chain: prod profile enforces (unsigned FAILS)" || fail "prod did not enforce audit-chain"
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# --- Control 2: control-plane verify-audit (unsigned store) ---
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export CASAN_CP_STORE_FILE="$WORK/cp.json" CASAN_CP_KEY_DIR="$WORK/cpkeys" CASAN_CP_PUB="$WORK/cp.pub"
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python3 "$BASH_DIR/control-plane-settings.py" set compression.enabled true --actor a --reason r >/dev/null 2>&1
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rm -f "$WORK/cp.json.head" "$WORK/cp.json.head.sig" "$WORK/cp.pub" # strip the signature -> unsigned store
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[[ "$(rc_of python3 "$BASH_DIR/control-plane-settings.py" verify-audit)" -eq 0 ]] \
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&& pass "control-plane: permissive default allows unsigned store" || fail "permissive should allow unsigned store"
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[[ "$(rc_of env CASAN_PROFILE=prod python3 "$BASH_DIR/control-plane-settings.py" verify-audit)" -ne 0 ]] \
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&& pass "control-plane: prod profile enforces (unsigned store FAILS)" || fail "prod did not enforce control-plane"
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unset CASAN_CP_STORE_FILE CASAN_CP_KEY_DIR CASAN_CP_PUB
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# --- Control 3: casan-harness kill-switch (prod-on + explicit-0-wins) ---
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export CASAN_KILLSWITCH_DIR="$WORK/ks"
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echo "hi" > "$WORK/in.txt"
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bash "$BASH_DIR/kill-switch.sh" engage project sec17 "test" >/dev/null 2>&1
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OUT="$(set +e; CASAN_PROFILE=prod CASAN_KILLSWITCH_SCOPE=project CASAN_KILLSWITCH_ID=sec17 \
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bash "$BASH_DIR/casan-harness.sh" "$WORK/in.txt" "$WORK/o.txt" act -- bash -c 'echo x' 2>&1)"
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echo "$OUT" | grep -q "KILL_SWITCH_ACTIVE" \
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&& pass "kill-switch: prod profile enforces an engaged switch (no explicit flag)" \
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|| fail "prod profile did not enforce kill-switch"
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OUT="$(set +e; CASAN_PROFILE=prod CASAN_KILLSWITCH_ENFORCE=0 CASAN_KILLSWITCH_SCOPE=project CASAN_KILLSWITCH_ID=sec17 \
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bash "$BASH_DIR/casan-harness.sh" "$WORK/in.txt" "$WORK/o2.txt" act -- bash -c 'echo x' 2>&1)"
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echo "$OUT" | grep -q "KILL_SWITCH_ACTIVE" \
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&& fail "explicit CASAN_KILLSWITCH_ENFORCE=0 was overridden by prod (should win)" \
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|| pass "kill-switch: explicit =0 overrides prod default (internal opt-out preserved)"
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echo ""
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echo "===== SEC-17 SUMMARY: PASS=$PASS FAIL=$FAIL ====="
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[[ "$FAIL" -eq 0 ]] || exit 1
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